Merge "merge-upstream/v6.1.70 from branch/tag: upstream/v6.1.70 into branch: cos-6.1" into cos-6.1
diff --git a/Documentation/networking/device_drivers/ethernet/index.rst b/Documentation/networking/device_drivers/ethernet/index.rst
index 5196905..1f16bd3 100644
--- a/Documentation/networking/device_drivers/ethernet/index.rst
+++ b/Documentation/networking/device_drivers/ethernet/index.rst
@@ -29,6 +29,7 @@
intel/e1000
intel/e1000e
intel/fm10k
+ intel/idpf
intel/igb
intel/igbvf
intel/ixgb
diff --git a/Documentation/networking/device_drivers/ethernet/intel/idpf.rst b/Documentation/networking/device_drivers/ethernet/intel/idpf.rst
new file mode 100644
index 0000000..adb16e2
--- /dev/null
+++ b/Documentation/networking/device_drivers/ethernet/intel/idpf.rst
@@ -0,0 +1,160 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+==========================================================================
+idpf Linux* Base Driver for the Intel(R) Infrastructure Data Path Function
+==========================================================================
+
+Intel idpf Linux driver.
+Copyright(C) 2023 Intel Corporation.
+
+.. contents::
+
+The idpf driver serves as both the Physical Function (PF) and Virtual Function
+(VF) driver for the Intel(R) Infrastructure Data Path Function.
+
+Driver information can be obtained using ethtool, lspci, and ip.
+
+For questions related to hardware requirements, refer to the documentation
+supplied with your Intel adapter. All hardware requirements listed apply to use
+with Linux.
+
+
+Identifying Your Adapter
+========================
+For information on how to identify your adapter, and for the latest Intel
+network drivers, refer to the Intel Support website:
+http://www.intel.com/support
+
+
+Additional Features and Configurations
+======================================
+
+ethtool
+-------
+The driver utilizes the ethtool interface for driver configuration and
+diagnostics, as well as displaying statistical information. The latest ethtool
+version is required for this functionality. If you don't have one yet, you can
+obtain it at:
+https://kernel.org/pub/software/network/ethtool/
+
+
+Viewing Link Messages
+---------------------
+Link messages will not be displayed to the console if the distribution is
+restricting system messages. In order to see network driver link messages on
+your console, set dmesg to eight by entering the following::
+
+ # dmesg -n 8
+
+.. note::
+ This setting is not saved across reboots.
+
+
+Jumbo Frames
+------------
+Jumbo Frames support is enabled by changing the Maximum Transmission Unit (MTU)
+to a value larger than the default value of 1500.
+
+Use the ip command to increase the MTU size. For example, enter the following
+where <ethX> is the interface number::
+
+ # ip link set mtu 9000 dev <ethX>
+ # ip link set up dev <ethX>
+
+.. note::
+ The maximum MTU setting for jumbo frames is 9706. This corresponds to the
+ maximum jumbo frame size of 9728 bytes.
+
+.. note::
+ This driver will attempt to use multiple page sized buffers to receive
+ each jumbo packet. This should help to avoid buffer starvation issues when
+ allocating receive packets.
+
+.. note::
+ Packet loss may have a greater impact on throughput when you use jumbo
+ frames. If you observe a drop in performance after enabling jumbo frames,
+ enabling flow control may mitigate the issue.
+
+
+Performance Optimization
+========================
+Driver defaults are meant to fit a wide variety of workloads, but if further
+optimization is required, we recommend experimenting with the following
+settings.
+
+
+Interrupt Rate Limiting
+-----------------------
+This driver supports an adaptive interrupt throttle rate (ITR) mechanism that
+is tuned for general workloads. The user can customize the interrupt rate
+control for specific workloads, via ethtool, adjusting the number of
+microseconds between interrupts.
+
+To set the interrupt rate manually, you must disable adaptive mode::
+
+ # ethtool -C <ethX> adaptive-rx off adaptive-tx off
+
+For lower CPU utilization:
+ - Disable adaptive ITR and lower Rx and Tx interrupts. The examples below
+ affect every queue of the specified interface.
+
+ - Setting rx-usecs and tx-usecs to 80 will limit interrupts to about
+ 12,500 interrupts per second per queue::
+
+ # ethtool -C <ethX> adaptive-rx off adaptive-tx off rx-usecs 80
+ tx-usecs 80
+
+For reduced latency:
+ - Disable adaptive ITR and ITR by setting rx-usecs and tx-usecs to 0
+ using ethtool::
+
+ # ethtool -C <ethX> adaptive-rx off adaptive-tx off rx-usecs 0
+ tx-usecs 0
+
+Per-queue interrupt rate settings:
+ - The following examples are for queues 1 and 3, but you can adjust other
+ queues.
+
+ - To disable Rx adaptive ITR and set static Rx ITR to 10 microseconds or
+ about 100,000 interrupts/second, for queues 1 and 3::
+
+ # ethtool --per-queue <ethX> queue_mask 0xa --coalesce adaptive-rx off
+ rx-usecs 10
+
+ - To show the current coalesce settings for queues 1 and 3::
+
+ # ethtool --per-queue <ethX> queue_mask 0xa --show-coalesce
+
+
+
+Virtualized Environments
+------------------------
+In addition to the other suggestions in this section, the following may be
+helpful to optimize performance in VMs.
+
+ - Using the appropriate mechanism (vcpupin) in the VM, pin the CPUs to
+ individual LCPUs, making sure to use a set of CPUs included in the
+ device's local_cpulist: /sys/class/net/<ethX>/device/local_cpulist.
+
+ - Configure as many Rx/Tx queues in the VM as available. (See the idpf driver
+ documentation for the number of queues supported.) For example::
+
+ # ethtool -L <virt_interface> rx <max> tx <max>
+
+
+Support
+=======
+For general information, go to the Intel support website at:
+http://www.intel.com/support/
+
+If an issue is identified with the released source code on a supported kernel
+with a supported adapter, email the specific information related to the issue
+to intel-wired-lan@lists.osuosl.org.
+
+
+Trademarks
+==========
+Intel is a trademark or registered trademark of Intel Corporation or its
+subsidiaries in the United States and/or other countries.
+
+* Other names and brands may be claimed as the property of others.
diff --git a/arch/arm64/configs/lakitu_defconfig b/arch/arm64/configs/lakitu_defconfig
index 4d23918..23055b4 100644
--- a/arch/arm64/configs/lakitu_defconfig
+++ b/arch/arm64/configs/lakitu_defconfig
@@ -1638,7 +1638,7 @@
CONFIG_NET_SOCK_MSG=y
CONFIG_NET_DEVLINK=y
CONFIG_PAGE_POOL=y
-# CONFIG_PAGE_POOL_STATS is not set
+CONFIG_PAGE_POOL_STATS=y
CONFIG_FAILOVER=y
CONFIG_ETHTOOL_NETLINK=y
@@ -2284,6 +2284,7 @@
# CONFIG_ICE is not set
# CONFIG_FM10K is not set
# CONFIG_IGC is not set
+CONFIG_IDPF=m
CONFIG_NET_VENDOR_WANGXUN=y
# CONFIG_NGBE is not set
# CONFIG_TXGBE is not set
diff --git a/arch/x86/configs/lakitu_defconfig b/arch/x86/configs/lakitu_defconfig
index 4d21e38..a4187e2 100644
--- a/arch/x86/configs/lakitu_defconfig
+++ b/arch/x86/configs/lakitu_defconfig
@@ -1679,7 +1679,7 @@
CONFIG_NET_SOCK_MSG=y
CONFIG_NET_DEVLINK=y
CONFIG_PAGE_POOL=y
-# CONFIG_PAGE_POOL_STATS is not set
+CONFIG_PAGE_POOL_STATS=y
CONFIG_FAILOVER=y
CONFIG_ETHTOOL_NETLINK=y
@@ -2295,6 +2295,7 @@
# CONFIG_ICE is not set
# CONFIG_FM10K is not set
# CONFIG_IGC is not set
+CONFIG_IDPF=m
CONFIG_NET_VENDOR_WANGXUN=y
# CONFIG_NGBE is not set
# CONFIG_TXGBE is not set
diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig
index 3facb55..0f4593a 100644
--- a/drivers/net/ethernet/intel/Kconfig
+++ b/drivers/net/ethernet/intel/Kconfig
@@ -371,5 +371,17 @@
To compile this driver as a module, choose M here. The module
will be called igc.
+config IDPF
+ tristate "Intel(R) Infrastructure Data Path Function Support"
+ depends on PCI_MSI
+ select DIMLIB
+ select PAGE_POOL
+ select PAGE_POOL_STATS
+ help
+ This driver supports Intel(R) Infrastructure Data Path Function
+ devices.
+
+ To compile this driver as a module, choose M here. The module
+ will be called idpf.
endif # NET_VENDOR_INTEL
diff --git a/drivers/net/ethernet/intel/Makefile b/drivers/net/ethernet/intel/Makefile
index 3075290..70cc2ae1 100644
--- a/drivers/net/ethernet/intel/Makefile
+++ b/drivers/net/ethernet/intel/Makefile
@@ -16,3 +16,4 @@
obj-$(CONFIG_IAVF) += iavf/
obj-$(CONFIG_FM10K) += fm10k/
obj-$(CONFIG_ICE) += ice/
+obj-$(CONFIG_IDPF) += idpf/
diff --git a/drivers/net/ethernet/intel/idpf/Makefile b/drivers/net/ethernet/intel/idpf/Makefile
new file mode 100644
index 0000000..6844ead
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/Makefile
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# Copyright (C) 2023 Intel Corporation
+
+# Makefile for Intel(R) Infrastructure Data Path Function Linux Driver
+
+obj-$(CONFIG_IDPF) += idpf.o
+
+idpf-y := \
+ idpf_controlq.o \
+ idpf_controlq_setup.o \
+ idpf_dev.o \
+ idpf_ethtool.o \
+ idpf_lib.o \
+ idpf_main.o \
+ idpf_singleq_txrx.o \
+ idpf_txrx.o \
+ idpf_virtchnl.o \
+ idpf_vf_dev.o
diff --git a/drivers/net/ethernet/intel/idpf/idpf.h b/drivers/net/ethernet/intel/idpf/idpf.h
new file mode 100644
index 0000000..bee7335
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf.h
@@ -0,0 +1,968 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_H_
+#define _IDPF_H_
+
+/* Forward declaration */
+struct idpf_adapter;
+struct idpf_vport;
+struct idpf_vport_max_q;
+
+#include <net/pkt_sched.h>
+#include <linux/aer.h>
+#include <linux/etherdevice.h>
+#include <linux/pci.h>
+#include <linux/bitfield.h>
+#include <linux/sctp.h>
+#include <linux/ethtool.h>
+#include <net/gro.h>
+#include <linux/dim.h>
+
+#include "virtchnl2.h"
+#include "idpf_lan_txrx.h"
+#include "idpf_txrx.h"
+#include "idpf_controlq.h"
+
+#define GETMAXVAL(num_bits) GENMASK((num_bits) - 1, 0)
+
+#define IDPF_NO_FREE_SLOT 0xffff
+
+/* Default Mailbox settings */
+#define IDPF_NUM_FILTERS_PER_MSG 20
+#define IDPF_NUM_DFLT_MBX_Q 2 /* includes both TX and RX */
+#define IDPF_DFLT_MBX_Q_LEN 64
+#define IDPF_DFLT_MBX_ID -1
+/* maximum number of times to try before resetting mailbox */
+#define IDPF_MB_MAX_ERR 20
+#define IDPF_NUM_CHUNKS_PER_MSG(struct_sz, chunk_sz) \
+ ((IDPF_CTLQ_MAX_BUF_LEN - (struct_sz)) / (chunk_sz))
+#define IDPF_WAIT_FOR_EVENT_TIMEO_MIN 2000
+#define IDPF_WAIT_FOR_EVENT_TIMEO 60000
+
+#define IDPF_MAX_WAIT 500
+
+/* available message levels */
+#define IDPF_AVAIL_NETIF_M (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
+
+#define IDPF_DIM_PROFILE_SLOTS 5
+
+#define IDPF_VIRTCHNL_VERSION_MAJOR VIRTCHNL2_VERSION_MAJOR_2
+#define IDPF_VIRTCHNL_VERSION_MINOR VIRTCHNL2_VERSION_MINOR_0
+
+/**
+ * struct idpf_mac_filter
+ * @list: list member field
+ * @macaddr: MAC address
+ * @remove: filter should be removed (virtchnl)
+ * @add: filter should be added (virtchnl)
+ */
+struct idpf_mac_filter {
+ struct list_head list;
+ u8 macaddr[ETH_ALEN];
+ bool remove;
+ bool add;
+};
+
+/**
+ * enum idpf_state - State machine to handle bring up
+ * @__IDPF_STARTUP: Start the state machine
+ * @__IDPF_VER_CHECK: Negotiate virtchnl version
+ * @__IDPF_GET_CAPS: Negotiate capabilities
+ * @__IDPF_INIT_SW: Init based on given capabilities
+ * @__IDPF_STATE_LAST: Must be last, used to determine size
+ */
+enum idpf_state {
+ __IDPF_STARTUP,
+ __IDPF_VER_CHECK,
+ __IDPF_GET_CAPS,
+ __IDPF_INIT_SW,
+ __IDPF_STATE_LAST,
+};
+
+/**
+ * enum idpf_flags - Hard reset causes.
+ * @IDPF_HR_FUNC_RESET: Hard reset when TxRx timeout
+ * @IDPF_HR_DRV_LOAD: Set on driver load for a clean HW
+ * @IDPF_HR_RESET_IN_PROG: Reset in progress
+ * @IDPF_REMOVE_IN_PROG: Driver remove in progress
+ * @IDPF_MB_INTR_MODE: Mailbox in interrupt mode
+ * @IDPF_FLAGS_NBITS: Must be last
+ */
+enum idpf_flags {
+ IDPF_HR_FUNC_RESET,
+ IDPF_HR_DRV_LOAD,
+ IDPF_HR_RESET_IN_PROG,
+ IDPF_REMOVE_IN_PROG,
+ IDPF_MB_INTR_MODE,
+ IDPF_FLAGS_NBITS,
+};
+
+/**
+ * enum idpf_cap_field - Offsets into capabilities struct for specific caps
+ * @IDPF_BASE_CAPS: generic base capabilities
+ * @IDPF_CSUM_CAPS: checksum offload capabilities
+ * @IDPF_SEG_CAPS: segmentation offload capabilities
+ * @IDPF_RSS_CAPS: RSS offload capabilities
+ * @IDPF_HSPLIT_CAPS: Header split capabilities
+ * @IDPF_RSC_CAPS: RSC offload capabilities
+ * @IDPF_OTHER_CAPS: miscellaneous offloads
+ *
+ * Used when checking for a specific capability flag since different capability
+ * sets are not mutually exclusive numerically, the caller must specify which
+ * type of capability they are checking for.
+ */
+enum idpf_cap_field {
+ IDPF_BASE_CAPS = -1,
+ IDPF_CSUM_CAPS = offsetof(struct virtchnl2_get_capabilities,
+ csum_caps),
+ IDPF_SEG_CAPS = offsetof(struct virtchnl2_get_capabilities,
+ seg_caps),
+ IDPF_RSS_CAPS = offsetof(struct virtchnl2_get_capabilities,
+ rss_caps),
+ IDPF_HSPLIT_CAPS = offsetof(struct virtchnl2_get_capabilities,
+ hsplit_caps),
+ IDPF_RSC_CAPS = offsetof(struct virtchnl2_get_capabilities,
+ rsc_caps),
+ IDPF_OTHER_CAPS = offsetof(struct virtchnl2_get_capabilities,
+ other_caps),
+};
+
+/**
+ * enum idpf_vport_state - Current vport state
+ * @__IDPF_VPORT_DOWN: Vport is down
+ * @__IDPF_VPORT_UP: Vport is up
+ * @__IDPF_VPORT_STATE_LAST: Must be last, number of states
+ */
+enum idpf_vport_state {
+ __IDPF_VPORT_DOWN,
+ __IDPF_VPORT_UP,
+ __IDPF_VPORT_STATE_LAST,
+};
+
+/**
+ * struct idpf_netdev_priv - Struct to store vport back pointer
+ * @adapter: Adapter back pointer
+ * @vport: Vport back pointer
+ * @vport_id: Vport identifier
+ * @vport_idx: Relative vport index
+ * @state: See enum idpf_vport_state
+ * @netstats: Packet and byte stats
+ * @stats_lock: Lock to protect stats update
+ */
+struct idpf_netdev_priv {
+ struct idpf_adapter *adapter;
+ struct idpf_vport *vport;
+ u32 vport_id;
+ u16 vport_idx;
+ enum idpf_vport_state state;
+ struct rtnl_link_stats64 netstats;
+ spinlock_t stats_lock;
+};
+
+/**
+ * struct idpf_reset_reg - Reset register offsets/masks
+ * @rstat: Reset status register
+ * @rstat_m: Reset status mask
+ */
+struct idpf_reset_reg {
+ void __iomem *rstat;
+ u32 rstat_m;
+};
+
+/**
+ * struct idpf_vport_max_q - Queue limits
+ * @max_rxq: Maximum number of RX queues supported
+ * @max_txq: Maixmum number of TX queues supported
+ * @max_bufq: In splitq, maximum number of buffer queues supported
+ * @max_complq: In splitq, maximum number of completion queues supported
+ */
+struct idpf_vport_max_q {
+ u16 max_rxq;
+ u16 max_txq;
+ u16 max_bufq;
+ u16 max_complq;
+};
+
+/**
+ * struct idpf_reg_ops - Device specific register operation function pointers
+ * @ctlq_reg_init: Mailbox control queue register initialization
+ * @intr_reg_init: Traffic interrupt register initialization
+ * @mb_intr_reg_init: Mailbox interrupt register initialization
+ * @reset_reg_init: Reset register initialization
+ * @trigger_reset: Trigger a reset to occur
+ */
+struct idpf_reg_ops {
+ void (*ctlq_reg_init)(struct idpf_ctlq_create_info *cq);
+ int (*intr_reg_init)(struct idpf_vport *vport);
+ void (*mb_intr_reg_init)(struct idpf_adapter *adapter);
+ void (*reset_reg_init)(struct idpf_adapter *adapter);
+ void (*trigger_reset)(struct idpf_adapter *adapter,
+ enum idpf_flags trig_cause);
+};
+
+/**
+ * struct idpf_dev_ops - Device specific operations
+ * @reg_ops: Register operations
+ */
+struct idpf_dev_ops {
+ struct idpf_reg_ops reg_ops;
+};
+
+/* These macros allow us to generate an enum and a matching char * array of
+ * stringified enums that are always in sync. Checkpatch issues a bogus warning
+ * about this being a complex macro; but it's wrong, these are never used as a
+ * statement and instead only used to define the enum and array.
+ */
+#define IDPF_FOREACH_VPORT_VC_STATE(STATE) \
+ STATE(IDPF_VC_CREATE_VPORT) \
+ STATE(IDPF_VC_CREATE_VPORT_ERR) \
+ STATE(IDPF_VC_ENA_VPORT) \
+ STATE(IDPF_VC_ENA_VPORT_ERR) \
+ STATE(IDPF_VC_DIS_VPORT) \
+ STATE(IDPF_VC_DIS_VPORT_ERR) \
+ STATE(IDPF_VC_DESTROY_VPORT) \
+ STATE(IDPF_VC_DESTROY_VPORT_ERR) \
+ STATE(IDPF_VC_CONFIG_TXQ) \
+ STATE(IDPF_VC_CONFIG_TXQ_ERR) \
+ STATE(IDPF_VC_CONFIG_RXQ) \
+ STATE(IDPF_VC_CONFIG_RXQ_ERR) \
+ STATE(IDPF_VC_ENA_QUEUES) \
+ STATE(IDPF_VC_ENA_QUEUES_ERR) \
+ STATE(IDPF_VC_DIS_QUEUES) \
+ STATE(IDPF_VC_DIS_QUEUES_ERR) \
+ STATE(IDPF_VC_MAP_IRQ) \
+ STATE(IDPF_VC_MAP_IRQ_ERR) \
+ STATE(IDPF_VC_UNMAP_IRQ) \
+ STATE(IDPF_VC_UNMAP_IRQ_ERR) \
+ STATE(IDPF_VC_ADD_QUEUES) \
+ STATE(IDPF_VC_ADD_QUEUES_ERR) \
+ STATE(IDPF_VC_DEL_QUEUES) \
+ STATE(IDPF_VC_DEL_QUEUES_ERR) \
+ STATE(IDPF_VC_ALLOC_VECTORS) \
+ STATE(IDPF_VC_ALLOC_VECTORS_ERR) \
+ STATE(IDPF_VC_DEALLOC_VECTORS) \
+ STATE(IDPF_VC_DEALLOC_VECTORS_ERR) \
+ STATE(IDPF_VC_SET_SRIOV_VFS) \
+ STATE(IDPF_VC_SET_SRIOV_VFS_ERR) \
+ STATE(IDPF_VC_GET_RSS_LUT) \
+ STATE(IDPF_VC_GET_RSS_LUT_ERR) \
+ STATE(IDPF_VC_SET_RSS_LUT) \
+ STATE(IDPF_VC_SET_RSS_LUT_ERR) \
+ STATE(IDPF_VC_GET_RSS_KEY) \
+ STATE(IDPF_VC_GET_RSS_KEY_ERR) \
+ STATE(IDPF_VC_SET_RSS_KEY) \
+ STATE(IDPF_VC_SET_RSS_KEY_ERR) \
+ STATE(IDPF_VC_GET_STATS) \
+ STATE(IDPF_VC_GET_STATS_ERR) \
+ STATE(IDPF_VC_ADD_MAC_ADDR) \
+ STATE(IDPF_VC_ADD_MAC_ADDR_ERR) \
+ STATE(IDPF_VC_DEL_MAC_ADDR) \
+ STATE(IDPF_VC_DEL_MAC_ADDR_ERR) \
+ STATE(IDPF_VC_GET_PTYPE_INFO) \
+ STATE(IDPF_VC_GET_PTYPE_INFO_ERR) \
+ STATE(IDPF_VC_LOOPBACK_STATE) \
+ STATE(IDPF_VC_LOOPBACK_STATE_ERR) \
+ STATE(IDPF_VC_NBITS)
+
+#define IDPF_GEN_ENUM(ENUM) ENUM,
+#define IDPF_GEN_STRING(STRING) #STRING,
+
+enum idpf_vport_vc_state {
+ IDPF_FOREACH_VPORT_VC_STATE(IDPF_GEN_ENUM)
+};
+
+extern const char * const idpf_vport_vc_state_str[];
+
+/**
+ * enum idpf_vport_reset_cause - Vport soft reset causes
+ * @IDPF_SR_Q_CHANGE: Soft reset queue change
+ * @IDPF_SR_Q_DESC_CHANGE: Soft reset descriptor change
+ * @IDPF_SR_MTU_CHANGE: Soft reset MTU change
+ * @IDPF_SR_RSC_CHANGE: Soft reset RSC change
+ */
+enum idpf_vport_reset_cause {
+ IDPF_SR_Q_CHANGE,
+ IDPF_SR_Q_DESC_CHANGE,
+ IDPF_SR_MTU_CHANGE,
+ IDPF_SR_RSC_CHANGE,
+};
+
+/**
+ * enum idpf_vport_flags - Vport flags
+ * @IDPF_VPORT_DEL_QUEUES: To send delete queues message
+ * @IDPF_VPORT_SW_MARKER: Indicate TX pipe drain software marker packets
+ * processing is done
+ * @IDPF_VPORT_FLAGS_NBITS: Must be last
+ */
+enum idpf_vport_flags {
+ IDPF_VPORT_DEL_QUEUES,
+ IDPF_VPORT_SW_MARKER,
+ IDPF_VPORT_FLAGS_NBITS,
+};
+
+struct idpf_port_stats {
+ struct u64_stats_sync stats_sync;
+ u64_stats_t rx_hw_csum_err;
+ u64_stats_t rx_hsplit;
+ u64_stats_t rx_hsplit_hbo;
+ u64_stats_t rx_bad_descs;
+ u64_stats_t tx_linearize;
+ u64_stats_t tx_busy;
+ u64_stats_t tx_drops;
+ u64_stats_t tx_dma_map_errs;
+ struct virtchnl2_vport_stats vport_stats;
+};
+
+/**
+ * struct idpf_vport - Handle for netdevices and queue resources
+ * @num_txq: Number of allocated TX queues
+ * @num_complq: Number of allocated completion queues
+ * @txq_desc_count: TX queue descriptor count
+ * @complq_desc_count: Completion queue descriptor count
+ * @compln_clean_budget: Work budget for completion clean
+ * @num_txq_grp: Number of TX queue groups
+ * @txq_grps: Array of TX queue groups
+ * @txq_model: Split queue or single queue queuing model
+ * @txqs: Used only in hotpath to get to the right queue very fast
+ * @crc_enable: Enable CRC insertion offload
+ * @num_rxq: Number of allocated RX queues
+ * @num_bufq: Number of allocated buffer queues
+ * @rxq_desc_count: RX queue descriptor count. *MUST* have enough descriptors
+ * to complete all buffer descriptors for all buffer queues in
+ * the worst case.
+ * @num_bufqs_per_qgrp: Buffer queues per RX queue in a given grouping
+ * @bufq_desc_count: Buffer queue descriptor count
+ * @bufq_size: Size of buffers in ring (e.g. 2K, 4K, etc)
+ * @num_rxq_grp: Number of RX queues in a group
+ * @rxq_grps: Total number of RX groups. Number of groups * number of RX per
+ * group will yield total number of RX queues.
+ * @rxq_model: Splitq queue or single queue queuing model
+ * @rx_ptype_lkup: Lookup table for ptypes on RX
+ * @adapter: back pointer to associated adapter
+ * @netdev: Associated net_device. Each vport should have one and only one
+ * associated netdev.
+ * @flags: See enum idpf_vport_flags
+ * @vport_type: Default SRIOV, SIOV, etc.
+ * @vport_id: Device given vport identifier
+ * @idx: Software index in adapter vports struct
+ * @default_vport: Use this vport if one isn't specified
+ * @base_rxd: True if the driver should use base descriptors instead of flex
+ * @num_q_vectors: Number of IRQ vectors allocated
+ * @q_vectors: Array of queue vectors
+ * @q_vector_idxs: Starting index of queue vectors
+ * @max_mtu: device given max possible MTU
+ * @default_mac_addr: device will give a default MAC to use
+ * @rx_itr_profile: RX profiles for Dynamic Interrupt Moderation
+ * @tx_itr_profile: TX profiles for Dynamic Interrupt Moderation
+ * @port_stats: per port csum, header split, and other offload stats
+ * @link_up: True if link is up
+ * @link_speed_mbps: Link speed in mbps
+ * @vc_msg: Virtchnl message buffer
+ * @vc_state: Virtchnl message state
+ * @vchnl_wq: Wait queue for virtchnl messages
+ * @sw_marker_wq: workqueue for marker packets
+ * @vc_buf_lock: Lock to protect virtchnl buffer
+ */
+struct idpf_vport {
+ u16 num_txq;
+ u16 num_complq;
+ u32 txq_desc_count;
+ u32 complq_desc_count;
+ u32 compln_clean_budget;
+ u16 num_txq_grp;
+ struct idpf_txq_group *txq_grps;
+ u32 txq_model;
+ struct idpf_queue **txqs;
+ bool crc_enable;
+
+ u16 num_rxq;
+ u16 num_bufq;
+ u32 rxq_desc_count;
+ u8 num_bufqs_per_qgrp;
+ u32 bufq_desc_count[IDPF_MAX_BUFQS_PER_RXQ_GRP];
+ u32 bufq_size[IDPF_MAX_BUFQS_PER_RXQ_GRP];
+ u16 num_rxq_grp;
+ struct idpf_rxq_group *rxq_grps;
+ u32 rxq_model;
+ struct idpf_rx_ptype_decoded rx_ptype_lkup[IDPF_RX_MAX_PTYPE];
+
+ struct idpf_adapter *adapter;
+ struct net_device *netdev;
+ DECLARE_BITMAP(flags, IDPF_VPORT_FLAGS_NBITS);
+ u16 vport_type;
+ u32 vport_id;
+ u16 idx;
+ bool default_vport;
+ bool base_rxd;
+
+ u16 num_q_vectors;
+ struct idpf_q_vector *q_vectors;
+ u16 *q_vector_idxs;
+ u16 max_mtu;
+ u8 default_mac_addr[ETH_ALEN];
+ u16 rx_itr_profile[IDPF_DIM_PROFILE_SLOTS];
+ u16 tx_itr_profile[IDPF_DIM_PROFILE_SLOTS];
+ struct idpf_port_stats port_stats;
+
+ bool link_up;
+ u32 link_speed_mbps;
+
+ char vc_msg[IDPF_CTLQ_MAX_BUF_LEN];
+ DECLARE_BITMAP(vc_state, IDPF_VC_NBITS);
+
+ wait_queue_head_t vchnl_wq;
+ wait_queue_head_t sw_marker_wq;
+ struct mutex vc_buf_lock;
+};
+
+/**
+ * enum idpf_user_flags
+ * @__IDPF_PROMISC_UC: Unicast promiscuous mode
+ * @__IDPF_PROMISC_MC: Multicast promiscuous mode
+ * @__IDPF_USER_FLAGS_NBITS: Must be last
+ */
+enum idpf_user_flags {
+ __IDPF_PROMISC_UC = 32,
+ __IDPF_PROMISC_MC,
+
+ __IDPF_USER_FLAGS_NBITS,
+};
+
+/**
+ * struct idpf_rss_data - Associated RSS data
+ * @rss_key_size: Size of RSS hash key
+ * @rss_key: RSS hash key
+ * @rss_lut_size: Size of RSS lookup table
+ * @rss_lut: RSS lookup table
+ * @cached_lut: Used to restore previously init RSS lut
+ */
+struct idpf_rss_data {
+ u16 rss_key_size;
+ u8 *rss_key;
+ u16 rss_lut_size;
+ u32 *rss_lut;
+ u32 *cached_lut;
+};
+
+/**
+ * struct idpf_vport_user_config_data - User defined configuration values for
+ * each vport.
+ * @rss_data: See struct idpf_rss_data
+ * @num_req_tx_qs: Number of user requested TX queues through ethtool
+ * @num_req_rx_qs: Number of user requested RX queues through ethtool
+ * @num_req_txq_desc: Number of user requested TX queue descriptors through
+ * ethtool
+ * @num_req_rxq_desc: Number of user requested RX queue descriptors through
+ * ethtool
+ * @user_flags: User toggled config flags
+ * @mac_filter_list: List of MAC filters
+ *
+ * Used to restore configuration after a reset as the vport will get wiped.
+ */
+struct idpf_vport_user_config_data {
+ struct idpf_rss_data rss_data;
+ u16 num_req_tx_qs;
+ u16 num_req_rx_qs;
+ u32 num_req_txq_desc;
+ u32 num_req_rxq_desc;
+ DECLARE_BITMAP(user_flags, __IDPF_USER_FLAGS_NBITS);
+ struct list_head mac_filter_list;
+};
+
+/**
+ * enum idpf_vport_config_flags - Vport config flags
+ * @IDPF_VPORT_REG_NETDEV: Register netdev
+ * @IDPF_VPORT_UP_REQUESTED: Set if interface up is requested on core reset
+ * @IDPF_VPORT_ADD_MAC_REQ: Asynchronous add ether address in flight
+ * @IDPF_VPORT_DEL_MAC_REQ: Asynchronous delete ether address in flight
+ * @IDPF_VPORT_CONFIG_FLAGS_NBITS: Must be last
+ */
+enum idpf_vport_config_flags {
+ IDPF_VPORT_REG_NETDEV,
+ IDPF_VPORT_UP_REQUESTED,
+ IDPF_VPORT_ADD_MAC_REQ,
+ IDPF_VPORT_DEL_MAC_REQ,
+ IDPF_VPORT_CONFIG_FLAGS_NBITS,
+};
+
+/**
+ * struct idpf_avail_queue_info
+ * @avail_rxq: Available RX queues
+ * @avail_txq: Available TX queues
+ * @avail_bufq: Available buffer queues
+ * @avail_complq: Available completion queues
+ *
+ * Maintain total queues available after allocating max queues to each vport.
+ */
+struct idpf_avail_queue_info {
+ u16 avail_rxq;
+ u16 avail_txq;
+ u16 avail_bufq;
+ u16 avail_complq;
+};
+
+/**
+ * struct idpf_vector_info - Utility structure to pass function arguments as a
+ * structure
+ * @num_req_vecs: Vectors required based on the number of queues updated by the
+ * user via ethtool
+ * @num_curr_vecs: Current number of vectors, must be >= @num_req_vecs
+ * @index: Relative starting index for vectors
+ * @default_vport: Vectors are for default vport
+ */
+struct idpf_vector_info {
+ u16 num_req_vecs;
+ u16 num_curr_vecs;
+ u16 index;
+ bool default_vport;
+};
+
+/**
+ * struct idpf_vector_lifo - Stack to maintain vector indexes used for vector
+ * distribution algorithm
+ * @top: Points to stack top i.e. next available vector index
+ * @base: Always points to start of the free pool
+ * @size: Total size of the vector stack
+ * @vec_idx: Array to store all the vector indexes
+ *
+ * Vector stack maintains all the relative vector indexes at the *adapter*
+ * level. This stack is divided into 2 parts, first one is called as 'default
+ * pool' and other one is called 'free pool'. Vector distribution algorithm
+ * gives priority to default vports in a way that at least IDPF_MIN_Q_VEC
+ * vectors are allocated per default vport and the relative vector indexes for
+ * those are maintained in default pool. Free pool contains all the unallocated
+ * vector indexes which can be allocated on-demand basis. Mailbox vector index
+ * is maintained in the default pool of the stack.
+ */
+struct idpf_vector_lifo {
+ u16 top;
+ u16 base;
+ u16 size;
+ u16 *vec_idx;
+};
+
+/**
+ * struct idpf_vport_config - Vport configuration data
+ * @user_config: see struct idpf_vport_user_config_data
+ * @max_q: Maximum possible queues
+ * @req_qs_chunks: Queue chunk data for requested queues
+ * @mac_filter_list_lock: Lock to protect mac filters
+ * @flags: See enum idpf_vport_config_flags
+ */
+struct idpf_vport_config {
+ struct idpf_vport_user_config_data user_config;
+ struct idpf_vport_max_q max_q;
+ void *req_qs_chunks;
+ spinlock_t mac_filter_list_lock;
+ DECLARE_BITMAP(flags, IDPF_VPORT_CONFIG_FLAGS_NBITS);
+};
+
+/**
+ * struct idpf_adapter - Device data struct generated on probe
+ * @pdev: PCI device struct given on probe
+ * @virt_ver_maj: Virtchnl version major
+ * @virt_ver_min: Virtchnl version minor
+ * @msg_enable: Debug message level enabled
+ * @mb_wait_count: Number of times mailbox was attempted initialization
+ * @state: Init state machine
+ * @flags: See enum idpf_flags
+ * @reset_reg: See struct idpf_reset_reg
+ * @hw: Device access data
+ * @num_req_msix: Requested number of MSIX vectors
+ * @num_avail_msix: Available number of MSIX vectors
+ * @num_msix_entries: Number of entries in MSIX table
+ * @msix_entries: MSIX table
+ * @req_vec_chunks: Requested vector chunk data
+ * @mb_vector: Mailbox vector data
+ * @vector_stack: Stack to store the msix vector indexes
+ * @irq_mb_handler: Handler for hard interrupt for mailbox
+ * @tx_timeout_count: Number of TX timeouts that have occurred
+ * @avail_queues: Device given queue limits
+ * @vports: Array to store vports created by the driver
+ * @netdevs: Associated Vport netdevs
+ * @vport_params_reqd: Vport params requested
+ * @vport_params_recvd: Vport params received
+ * @vport_ids: Array of device given vport identifiers
+ * @vport_config: Vport config parameters
+ * @max_vports: Maximum vports that can be allocated
+ * @num_alloc_vports: Current number of vports allocated
+ * @next_vport: Next free slot in pf->vport[] - 0-based!
+ * @init_task: Initialization task
+ * @init_wq: Workqueue for initialization task
+ * @serv_task: Periodically recurring maintenance task
+ * @serv_wq: Workqueue for service task
+ * @mbx_task: Task to handle mailbox interrupts
+ * @mbx_wq: Workqueue for mailbox responses
+ * @vc_event_task: Task to handle out of band virtchnl event notifications
+ * @vc_event_wq: Workqueue for virtchnl events
+ * @stats_task: Periodic statistics retrieval task
+ * @stats_wq: Workqueue for statistics task
+ * @caps: Negotiated capabilities with device
+ * @vchnl_wq: Wait queue for virtchnl messages
+ * @vc_state: Virtchnl message state
+ * @vc_msg: Virtchnl message buffer
+ * @dev_ops: See idpf_dev_ops
+ * @num_vfs: Number of allocated VFs through sysfs. PF does not directly talk
+ * to VFs but is used to initialize them
+ * @crc_enable: Enable CRC insertion offload
+ * @req_tx_splitq: TX split or single queue model to request
+ * @req_rx_splitq: RX split or single queue model to request
+ * @vport_ctrl_lock: Lock to protect the vport control flow
+ * @vector_lock: Lock to protect vector distribution
+ * @queue_lock: Lock to protect queue distribution
+ * @vc_buf_lock: Lock to protect virtchnl buffer
+ */
+struct idpf_adapter {
+ struct pci_dev *pdev;
+ u32 virt_ver_maj;
+ u32 virt_ver_min;
+
+ u32 msg_enable;
+ u32 mb_wait_count;
+ enum idpf_state state;
+ DECLARE_BITMAP(flags, IDPF_FLAGS_NBITS);
+ struct idpf_reset_reg reset_reg;
+ struct idpf_hw hw;
+ u16 num_req_msix;
+ u16 num_avail_msix;
+ u16 num_msix_entries;
+ struct msix_entry *msix_entries;
+ struct virtchnl2_alloc_vectors *req_vec_chunks;
+ struct idpf_q_vector mb_vector;
+ struct idpf_vector_lifo vector_stack;
+ irqreturn_t (*irq_mb_handler)(int irq, void *data);
+
+ u32 tx_timeout_count;
+ struct idpf_avail_queue_info avail_queues;
+ struct idpf_vport **vports;
+ struct net_device **netdevs;
+ struct virtchnl2_create_vport **vport_params_reqd;
+ struct virtchnl2_create_vport **vport_params_recvd;
+ u32 *vport_ids;
+
+ struct idpf_vport_config **vport_config;
+ u16 max_vports;
+ u16 num_alloc_vports;
+ u16 next_vport;
+
+ struct delayed_work init_task;
+ struct workqueue_struct *init_wq;
+ struct delayed_work serv_task;
+ struct workqueue_struct *serv_wq;
+ struct delayed_work mbx_task;
+ struct workqueue_struct *mbx_wq;
+ struct delayed_work vc_event_task;
+ struct workqueue_struct *vc_event_wq;
+ struct delayed_work stats_task;
+ struct workqueue_struct *stats_wq;
+ struct virtchnl2_get_capabilities caps;
+
+ wait_queue_head_t vchnl_wq;
+ DECLARE_BITMAP(vc_state, IDPF_VC_NBITS);
+ char vc_msg[IDPF_CTLQ_MAX_BUF_LEN];
+ struct idpf_dev_ops dev_ops;
+ int num_vfs;
+ bool crc_enable;
+ bool req_tx_splitq;
+ bool req_rx_splitq;
+
+ struct mutex vport_ctrl_lock;
+ struct mutex vector_lock;
+ struct mutex queue_lock;
+ struct mutex vc_buf_lock;
+};
+
+/**
+ * idpf_is_queue_model_split - check if queue model is split
+ * @q_model: queue model single or split
+ *
+ * Returns true if queue model is split else false
+ */
+static inline int idpf_is_queue_model_split(u16 q_model)
+{
+ return q_model == VIRTCHNL2_QUEUE_MODEL_SPLIT;
+}
+
+#define idpf_is_cap_ena(adapter, field, flag) \
+ idpf_is_capability_ena(adapter, false, field, flag)
+#define idpf_is_cap_ena_all(adapter, field, flag) \
+ idpf_is_capability_ena(adapter, true, field, flag)
+
+bool idpf_is_capability_ena(struct idpf_adapter *adapter, bool all,
+ enum idpf_cap_field field, u64 flag);
+
+#define IDPF_CAP_RSS (\
+ VIRTCHNL2_CAP_RSS_IPV4_TCP |\
+ VIRTCHNL2_CAP_RSS_IPV4_TCP |\
+ VIRTCHNL2_CAP_RSS_IPV4_UDP |\
+ VIRTCHNL2_CAP_RSS_IPV4_SCTP |\
+ VIRTCHNL2_CAP_RSS_IPV4_OTHER |\
+ VIRTCHNL2_CAP_RSS_IPV6_TCP |\
+ VIRTCHNL2_CAP_RSS_IPV6_TCP |\
+ VIRTCHNL2_CAP_RSS_IPV6_UDP |\
+ VIRTCHNL2_CAP_RSS_IPV6_SCTP |\
+ VIRTCHNL2_CAP_RSS_IPV6_OTHER)
+
+#define IDPF_CAP_RSC (\
+ VIRTCHNL2_CAP_RSC_IPV4_TCP |\
+ VIRTCHNL2_CAP_RSC_IPV6_TCP)
+
+#define IDPF_CAP_HSPLIT (\
+ VIRTCHNL2_CAP_RX_HSPLIT_AT_L4V4 |\
+ VIRTCHNL2_CAP_RX_HSPLIT_AT_L4V6)
+
+#define IDPF_CAP_RX_CSUM_L4V4 (\
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_TCP |\
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_UDP)
+
+#define IDPF_CAP_RX_CSUM_L4V6 (\
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_TCP |\
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_UDP)
+
+#define IDPF_CAP_RX_CSUM (\
+ VIRTCHNL2_CAP_RX_CSUM_L3_IPV4 |\
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_TCP |\
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_UDP |\
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_TCP |\
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_UDP)
+
+#define IDPF_CAP_SCTP_CSUM (\
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_SCTP |\
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_SCTP |\
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_SCTP |\
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_SCTP)
+
+#define IDPF_CAP_TUNNEL_TX_CSUM (\
+ VIRTCHNL2_CAP_TX_CSUM_L3_SINGLE_TUNNEL |\
+ VIRTCHNL2_CAP_TX_CSUM_L4_SINGLE_TUNNEL)
+
+/**
+ * idpf_get_reserved_vecs - Get reserved vectors
+ * @adapter: private data struct
+ */
+static inline u16 idpf_get_reserved_vecs(struct idpf_adapter *adapter)
+{
+ return le16_to_cpu(adapter->caps.num_allocated_vectors);
+}
+
+/**
+ * idpf_get_default_vports - Get default number of vports
+ * @adapter: private data struct
+ */
+static inline u16 idpf_get_default_vports(struct idpf_adapter *adapter)
+{
+ return le16_to_cpu(adapter->caps.default_num_vports);
+}
+
+/**
+ * idpf_get_max_vports - Get max number of vports
+ * @adapter: private data struct
+ */
+static inline u16 idpf_get_max_vports(struct idpf_adapter *adapter)
+{
+ return le16_to_cpu(adapter->caps.max_vports);
+}
+
+/**
+ * idpf_get_max_tx_bufs - Get max scatter-gather buffers supported by the device
+ * @adapter: private data struct
+ */
+static inline unsigned int idpf_get_max_tx_bufs(struct idpf_adapter *adapter)
+{
+ return adapter->caps.max_sg_bufs_per_tx_pkt;
+}
+
+/**
+ * idpf_get_min_tx_pkt_len - Get min packet length supported by the device
+ * @adapter: private data struct
+ */
+static inline u8 idpf_get_min_tx_pkt_len(struct idpf_adapter *adapter)
+{
+ u8 pkt_len = adapter->caps.min_sso_packet_len;
+
+ return pkt_len ? pkt_len : IDPF_TX_MIN_PKT_LEN;
+}
+
+/**
+ * idpf_get_reg_addr - Get BAR0 register address
+ * @adapter: private data struct
+ * @reg_offset: register offset value
+ *
+ * Based on the register offset, return the actual BAR0 register address
+ */
+static inline void __iomem *idpf_get_reg_addr(struct idpf_adapter *adapter,
+ resource_size_t reg_offset)
+{
+ return (void __iomem *)(adapter->hw.hw_addr + reg_offset);
+}
+
+/**
+ * idpf_is_reset_detected - check if we were reset at some point
+ * @adapter: driver specific private structure
+ *
+ * Returns true if we are either in reset currently or were previously reset.
+ */
+static inline bool idpf_is_reset_detected(struct idpf_adapter *adapter)
+{
+ if (!adapter->hw.arq)
+ return true;
+
+ return !(readl(idpf_get_reg_addr(adapter, adapter->hw.arq->reg.len)) &
+ adapter->hw.arq->reg.len_mask);
+}
+
+/**
+ * idpf_is_reset_in_prog - check if reset is in progress
+ * @adapter: driver specific private structure
+ *
+ * Returns true if hard reset is in progress, false otherwise
+ */
+static inline bool idpf_is_reset_in_prog(struct idpf_adapter *adapter)
+{
+ return (test_bit(IDPF_HR_RESET_IN_PROG, adapter->flags) ||
+ test_bit(IDPF_HR_FUNC_RESET, adapter->flags) ||
+ test_bit(IDPF_HR_DRV_LOAD, adapter->flags));
+}
+
+/**
+ * idpf_netdev_to_vport - get a vport handle from a netdev
+ * @netdev: network interface device structure
+ */
+static inline struct idpf_vport *idpf_netdev_to_vport(struct net_device *netdev)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+
+ return np->vport;
+}
+
+/**
+ * idpf_netdev_to_adapter - Get adapter handle from a netdev
+ * @netdev: Network interface device structure
+ */
+static inline struct idpf_adapter *idpf_netdev_to_adapter(struct net_device *netdev)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+
+ return np->adapter;
+}
+
+/**
+ * idpf_is_feature_ena - Determine if a particular feature is enabled
+ * @vport: Vport to check
+ * @feature: Netdev flag to check
+ *
+ * Returns true or false if a particular feature is enabled.
+ */
+static inline bool idpf_is_feature_ena(const struct idpf_vport *vport,
+ netdev_features_t feature)
+{
+ return vport->netdev->features & feature;
+}
+
+/**
+ * idpf_get_max_tx_hdr_size -- get the size of tx header
+ * @adapter: Driver specific private structure
+ */
+static inline u16 idpf_get_max_tx_hdr_size(struct idpf_adapter *adapter)
+{
+ return le16_to_cpu(adapter->caps.max_tx_hdr_size);
+}
+
+/**
+ * idpf_vport_ctrl_lock - Acquire the vport control lock
+ * @netdev: Network interface device structure
+ *
+ * This lock should be used by non-datapath code to protect against vport
+ * destruction.
+ */
+static inline void idpf_vport_ctrl_lock(struct net_device *netdev)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+
+ mutex_lock(&np->adapter->vport_ctrl_lock);
+}
+
+/**
+ * idpf_vport_ctrl_unlock - Release the vport control lock
+ * @netdev: Network interface device structure
+ */
+static inline void idpf_vport_ctrl_unlock(struct net_device *netdev)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+
+ mutex_unlock(&np->adapter->vport_ctrl_lock);
+}
+
+void idpf_statistics_task(struct work_struct *work);
+void idpf_init_task(struct work_struct *work);
+void idpf_service_task(struct work_struct *work);
+void idpf_mbx_task(struct work_struct *work);
+void idpf_vc_event_task(struct work_struct *work);
+void idpf_dev_ops_init(struct idpf_adapter *adapter);
+void idpf_vf_dev_ops_init(struct idpf_adapter *adapter);
+int idpf_vport_adjust_qs(struct idpf_vport *vport);
+int idpf_init_dflt_mbx(struct idpf_adapter *adapter);
+void idpf_deinit_dflt_mbx(struct idpf_adapter *adapter);
+int idpf_vc_core_init(struct idpf_adapter *adapter);
+void idpf_vc_core_deinit(struct idpf_adapter *adapter);
+int idpf_intr_req(struct idpf_adapter *adapter);
+void idpf_intr_rel(struct idpf_adapter *adapter);
+int idpf_get_reg_intr_vecs(struct idpf_vport *vport,
+ struct idpf_vec_regs *reg_vals);
+u16 idpf_get_max_tx_hdr_size(struct idpf_adapter *adapter);
+int idpf_send_delete_queues_msg(struct idpf_vport *vport);
+int idpf_send_add_queues_msg(const struct idpf_vport *vport, u16 num_tx_q,
+ u16 num_complq, u16 num_rx_q, u16 num_rx_bufq);
+int idpf_initiate_soft_reset(struct idpf_vport *vport,
+ enum idpf_vport_reset_cause reset_cause);
+int idpf_send_enable_vport_msg(struct idpf_vport *vport);
+int idpf_send_disable_vport_msg(struct idpf_vport *vport);
+int idpf_send_destroy_vport_msg(struct idpf_vport *vport);
+int idpf_send_get_rx_ptype_msg(struct idpf_vport *vport);
+int idpf_send_ena_dis_loopback_msg(struct idpf_vport *vport);
+int idpf_send_get_set_rss_key_msg(struct idpf_vport *vport, bool get);
+int idpf_send_get_set_rss_lut_msg(struct idpf_vport *vport, bool get);
+int idpf_send_dealloc_vectors_msg(struct idpf_adapter *adapter);
+int idpf_send_alloc_vectors_msg(struct idpf_adapter *adapter, u16 num_vectors);
+void idpf_deinit_task(struct idpf_adapter *adapter);
+int idpf_req_rel_vector_indexes(struct idpf_adapter *adapter,
+ u16 *q_vector_idxs,
+ struct idpf_vector_info *vec_info);
+int idpf_vport_alloc_vec_indexes(struct idpf_vport *vport);
+int idpf_send_get_stats_msg(struct idpf_vport *vport);
+int idpf_get_vec_ids(struct idpf_adapter *adapter,
+ u16 *vecids, int num_vecids,
+ struct virtchnl2_vector_chunks *chunks);
+int idpf_recv_mb_msg(struct idpf_adapter *adapter, u32 op,
+ void *msg, int msg_size);
+int idpf_send_mb_msg(struct idpf_adapter *adapter, u32 op,
+ u16 msg_size, u8 *msg);
+void idpf_set_ethtool_ops(struct net_device *netdev);
+int idpf_vport_alloc_max_qs(struct idpf_adapter *adapter,
+ struct idpf_vport_max_q *max_q);
+void idpf_vport_dealloc_max_qs(struct idpf_adapter *adapter,
+ struct idpf_vport_max_q *max_q);
+int idpf_add_del_mac_filters(struct idpf_vport *vport,
+ struct idpf_netdev_priv *np,
+ bool add, bool async);
+int idpf_set_promiscuous(struct idpf_adapter *adapter,
+ struct idpf_vport_user_config_data *config_data,
+ u32 vport_id);
+int idpf_send_disable_queues_msg(struct idpf_vport *vport);
+void idpf_vport_init(struct idpf_vport *vport, struct idpf_vport_max_q *max_q);
+u32 idpf_get_vport_id(struct idpf_vport *vport);
+int idpf_vport_queue_ids_init(struct idpf_vport *vport);
+int idpf_queue_reg_init(struct idpf_vport *vport);
+int idpf_send_config_queues_msg(struct idpf_vport *vport);
+int idpf_send_enable_queues_msg(struct idpf_vport *vport);
+int idpf_send_create_vport_msg(struct idpf_adapter *adapter,
+ struct idpf_vport_max_q *max_q);
+int idpf_check_supported_desc_ids(struct idpf_vport *vport);
+void idpf_vport_intr_write_itr(struct idpf_q_vector *q_vector,
+ u16 itr, bool tx);
+int idpf_send_map_unmap_queue_vector_msg(struct idpf_vport *vport, bool map);
+int idpf_send_set_sriov_vfs_msg(struct idpf_adapter *adapter, u16 num_vfs);
+int idpf_sriov_configure(struct pci_dev *pdev, int num_vfs);
+
+#endif /* !_IDPF_H_ */
diff --git a/drivers/net/ethernet/intel/idpf/idpf_controlq.c b/drivers/net/ethernet/intel/idpf/idpf_controlq.c
new file mode 100644
index 0000000..c7f43d2
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_controlq.c
@@ -0,0 +1,621 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf_controlq.h"
+
+/**
+ * idpf_ctlq_setup_regs - initialize control queue registers
+ * @cq: pointer to the specific control queue
+ * @q_create_info: structs containing info for each queue to be initialized
+ */
+static void idpf_ctlq_setup_regs(struct idpf_ctlq_info *cq,
+ struct idpf_ctlq_create_info *q_create_info)
+{
+ /* set control queue registers in our local struct */
+ cq->reg.head = q_create_info->reg.head;
+ cq->reg.tail = q_create_info->reg.tail;
+ cq->reg.len = q_create_info->reg.len;
+ cq->reg.bah = q_create_info->reg.bah;
+ cq->reg.bal = q_create_info->reg.bal;
+ cq->reg.len_mask = q_create_info->reg.len_mask;
+ cq->reg.len_ena_mask = q_create_info->reg.len_ena_mask;
+ cq->reg.head_mask = q_create_info->reg.head_mask;
+}
+
+/**
+ * idpf_ctlq_init_regs - Initialize control queue registers
+ * @hw: pointer to hw struct
+ * @cq: pointer to the specific Control queue
+ * @is_rxq: true if receive control queue, false otherwise
+ *
+ * Initialize registers. The caller is expected to have already initialized the
+ * descriptor ring memory and buffer memory
+ */
+static void idpf_ctlq_init_regs(struct idpf_hw *hw, struct idpf_ctlq_info *cq,
+ bool is_rxq)
+{
+ /* Update tail to post pre-allocated buffers for rx queues */
+ if (is_rxq)
+ wr32(hw, cq->reg.tail, (u32)(cq->ring_size - 1));
+
+ /* For non-Mailbox control queues only TAIL need to be set */
+ if (cq->q_id != -1)
+ return;
+
+ /* Clear Head for both send or receive */
+ wr32(hw, cq->reg.head, 0);
+
+ /* set starting point */
+ wr32(hw, cq->reg.bal, lower_32_bits(cq->desc_ring.pa));
+ wr32(hw, cq->reg.bah, upper_32_bits(cq->desc_ring.pa));
+ wr32(hw, cq->reg.len, (cq->ring_size | cq->reg.len_ena_mask));
+}
+
+/**
+ * idpf_ctlq_init_rxq_bufs - populate receive queue descriptors with buf
+ * @cq: pointer to the specific Control queue
+ *
+ * Record the address of the receive queue DMA buffers in the descriptors.
+ * The buffers must have been previously allocated.
+ */
+static void idpf_ctlq_init_rxq_bufs(struct idpf_ctlq_info *cq)
+{
+ int i;
+
+ for (i = 0; i < cq->ring_size; i++) {
+ struct idpf_ctlq_desc *desc = IDPF_CTLQ_DESC(cq, i);
+ struct idpf_dma_mem *bi = cq->bi.rx_buff[i];
+
+ /* No buffer to post to descriptor, continue */
+ if (!bi)
+ continue;
+
+ desc->flags =
+ cpu_to_le16(IDPF_CTLQ_FLAG_BUF | IDPF_CTLQ_FLAG_RD);
+ desc->opcode = 0;
+ desc->datalen = cpu_to_le16(bi->size);
+ desc->ret_val = 0;
+ desc->v_opcode_dtype = 0;
+ desc->v_retval = 0;
+ desc->params.indirect.addr_high =
+ cpu_to_le32(upper_32_bits(bi->pa));
+ desc->params.indirect.addr_low =
+ cpu_to_le32(lower_32_bits(bi->pa));
+ desc->params.indirect.param0 = 0;
+ desc->params.indirect.sw_cookie = 0;
+ desc->params.indirect.v_flags = 0;
+ }
+}
+
+/**
+ * idpf_ctlq_shutdown - shutdown the CQ
+ * @hw: pointer to hw struct
+ * @cq: pointer to the specific Control queue
+ *
+ * The main shutdown routine for any controq queue
+ */
+static void idpf_ctlq_shutdown(struct idpf_hw *hw, struct idpf_ctlq_info *cq)
+{
+ mutex_lock(&cq->cq_lock);
+
+ /* free ring buffers and the ring itself */
+ idpf_ctlq_dealloc_ring_res(hw, cq);
+
+ /* Set ring_size to 0 to indicate uninitialized queue */
+ cq->ring_size = 0;
+
+ mutex_unlock(&cq->cq_lock);
+ mutex_destroy(&cq->cq_lock);
+}
+
+/**
+ * idpf_ctlq_add - add one control queue
+ * @hw: pointer to hardware struct
+ * @qinfo: info for queue to be created
+ * @cq_out: (output) double pointer to control queue to be created
+ *
+ * Allocate and initialize a control queue and add it to the control queue list.
+ * The cq parameter will be allocated/initialized and passed back to the caller
+ * if no errors occur.
+ *
+ * Note: idpf_ctlq_init must be called prior to any calls to idpf_ctlq_add
+ */
+int idpf_ctlq_add(struct idpf_hw *hw,
+ struct idpf_ctlq_create_info *qinfo,
+ struct idpf_ctlq_info **cq_out)
+{
+ struct idpf_ctlq_info *cq;
+ bool is_rxq = false;
+ int err;
+
+ cq = kzalloc(sizeof(*cq), GFP_KERNEL);
+ if (!cq)
+ return -ENOMEM;
+
+ cq->cq_type = qinfo->type;
+ cq->q_id = qinfo->id;
+ cq->buf_size = qinfo->buf_size;
+ cq->ring_size = qinfo->len;
+
+ cq->next_to_use = 0;
+ cq->next_to_clean = 0;
+ cq->next_to_post = cq->ring_size - 1;
+
+ switch (qinfo->type) {
+ case IDPF_CTLQ_TYPE_MAILBOX_RX:
+ is_rxq = true;
+ fallthrough;
+ case IDPF_CTLQ_TYPE_MAILBOX_TX:
+ err = idpf_ctlq_alloc_ring_res(hw, cq);
+ break;
+ default:
+ err = -EBADR;
+ break;
+ }
+
+ if (err)
+ goto init_free_q;
+
+ if (is_rxq) {
+ idpf_ctlq_init_rxq_bufs(cq);
+ } else {
+ /* Allocate the array of msg pointers for TX queues */
+ cq->bi.tx_msg = kcalloc(qinfo->len,
+ sizeof(struct idpf_ctlq_msg *),
+ GFP_KERNEL);
+ if (!cq->bi.tx_msg) {
+ err = -ENOMEM;
+ goto init_dealloc_q_mem;
+ }
+ }
+
+ idpf_ctlq_setup_regs(cq, qinfo);
+
+ idpf_ctlq_init_regs(hw, cq, is_rxq);
+
+ mutex_init(&cq->cq_lock);
+
+ list_add(&cq->cq_list, &hw->cq_list_head);
+
+ *cq_out = cq;
+
+ return 0;
+
+init_dealloc_q_mem:
+ /* free ring buffers and the ring itself */
+ idpf_ctlq_dealloc_ring_res(hw, cq);
+init_free_q:
+ kfree(cq);
+
+ return err;
+}
+
+/**
+ * idpf_ctlq_remove - deallocate and remove specified control queue
+ * @hw: pointer to hardware struct
+ * @cq: pointer to control queue to be removed
+ */
+void idpf_ctlq_remove(struct idpf_hw *hw,
+ struct idpf_ctlq_info *cq)
+{
+ list_del(&cq->cq_list);
+ idpf_ctlq_shutdown(hw, cq);
+ kfree(cq);
+}
+
+/**
+ * idpf_ctlq_init - main initialization routine for all control queues
+ * @hw: pointer to hardware struct
+ * @num_q: number of queues to initialize
+ * @q_info: array of structs containing info for each queue to be initialized
+ *
+ * This initializes any number and any type of control queues. This is an all
+ * or nothing routine; if one fails, all previously allocated queues will be
+ * destroyed. This must be called prior to using the individual add/remove
+ * APIs.
+ */
+int idpf_ctlq_init(struct idpf_hw *hw, u8 num_q,
+ struct idpf_ctlq_create_info *q_info)
+{
+ struct idpf_ctlq_info *cq, *tmp;
+ int err;
+ int i;
+
+ INIT_LIST_HEAD(&hw->cq_list_head);
+
+ for (i = 0; i < num_q; i++) {
+ struct idpf_ctlq_create_info *qinfo = q_info + i;
+
+ err = idpf_ctlq_add(hw, qinfo, &cq);
+ if (err)
+ goto init_destroy_qs;
+ }
+
+ return 0;
+
+init_destroy_qs:
+ list_for_each_entry_safe(cq, tmp, &hw->cq_list_head, cq_list)
+ idpf_ctlq_remove(hw, cq);
+
+ return err;
+}
+
+/**
+ * idpf_ctlq_deinit - destroy all control queues
+ * @hw: pointer to hw struct
+ */
+void idpf_ctlq_deinit(struct idpf_hw *hw)
+{
+ struct idpf_ctlq_info *cq, *tmp;
+
+ list_for_each_entry_safe(cq, tmp, &hw->cq_list_head, cq_list)
+ idpf_ctlq_remove(hw, cq);
+}
+
+/**
+ * idpf_ctlq_send - send command to Control Queue (CTQ)
+ * @hw: pointer to hw struct
+ * @cq: handle to control queue struct to send on
+ * @num_q_msg: number of messages to send on control queue
+ * @q_msg: pointer to array of queue messages to be sent
+ *
+ * The caller is expected to allocate DMAable buffers and pass them to the
+ * send routine via the q_msg struct / control queue specific data struct.
+ * The control queue will hold a reference to each send message until
+ * the completion for that message has been cleaned.
+ */
+int idpf_ctlq_send(struct idpf_hw *hw, struct idpf_ctlq_info *cq,
+ u16 num_q_msg, struct idpf_ctlq_msg q_msg[])
+{
+ struct idpf_ctlq_desc *desc;
+ int num_desc_avail;
+ int err = 0;
+ int i;
+
+ mutex_lock(&cq->cq_lock);
+
+ /* Ensure there are enough descriptors to send all messages */
+ num_desc_avail = IDPF_CTLQ_DESC_UNUSED(cq);
+ if (num_desc_avail == 0 || num_desc_avail < num_q_msg) {
+ err = -ENOSPC;
+ goto err_unlock;
+ }
+
+ for (i = 0; i < num_q_msg; i++) {
+ struct idpf_ctlq_msg *msg = &q_msg[i];
+
+ desc = IDPF_CTLQ_DESC(cq, cq->next_to_use);
+
+ desc->opcode = cpu_to_le16(msg->opcode);
+ desc->pfid_vfid = cpu_to_le16(msg->func_id);
+
+ desc->v_opcode_dtype = cpu_to_le32(msg->cookie.mbx.chnl_opcode);
+ desc->v_retval = cpu_to_le32(msg->cookie.mbx.chnl_retval);
+
+ desc->flags = cpu_to_le16((msg->host_id & IDPF_HOST_ID_MASK) <<
+ IDPF_CTLQ_FLAG_HOST_ID_S);
+ if (msg->data_len) {
+ struct idpf_dma_mem *buff = msg->ctx.indirect.payload;
+
+ desc->datalen |= cpu_to_le16(msg->data_len);
+ desc->flags |= cpu_to_le16(IDPF_CTLQ_FLAG_BUF);
+ desc->flags |= cpu_to_le16(IDPF_CTLQ_FLAG_RD);
+
+ /* Update the address values in the desc with the pa
+ * value for respective buffer
+ */
+ desc->params.indirect.addr_high =
+ cpu_to_le32(upper_32_bits(buff->pa));
+ desc->params.indirect.addr_low =
+ cpu_to_le32(lower_32_bits(buff->pa));
+
+ memcpy(&desc->params, msg->ctx.indirect.context,
+ IDPF_INDIRECT_CTX_SIZE);
+ } else {
+ memcpy(&desc->params, msg->ctx.direct,
+ IDPF_DIRECT_CTX_SIZE);
+ }
+
+ /* Store buffer info */
+ cq->bi.tx_msg[cq->next_to_use] = msg;
+
+ (cq->next_to_use)++;
+ if (cq->next_to_use == cq->ring_size)
+ cq->next_to_use = 0;
+ }
+
+ /* Force memory write to complete before letting hardware
+ * know that there are new descriptors to fetch.
+ */
+ dma_wmb();
+
+ wr32(hw, cq->reg.tail, cq->next_to_use);
+
+err_unlock:
+ mutex_unlock(&cq->cq_lock);
+
+ return err;
+}
+
+/**
+ * idpf_ctlq_clean_sq - reclaim send descriptors on HW write back for the
+ * requested queue
+ * @cq: pointer to the specific Control queue
+ * @clean_count: (input|output) number of descriptors to clean as input, and
+ * number of descriptors actually cleaned as output
+ * @msg_status: (output) pointer to msg pointer array to be populated; needs
+ * to be allocated by caller
+ *
+ * Returns an array of message pointers associated with the cleaned
+ * descriptors. The pointers are to the original ctlq_msgs sent on the cleaned
+ * descriptors. The status will be returned for each; any messages that failed
+ * to send will have a non-zero status. The caller is expected to free original
+ * ctlq_msgs and free or reuse the DMA buffers.
+ */
+int idpf_ctlq_clean_sq(struct idpf_ctlq_info *cq, u16 *clean_count,
+ struct idpf_ctlq_msg *msg_status[])
+{
+ struct idpf_ctlq_desc *desc;
+ u16 i, num_to_clean;
+ u16 ntc, desc_err;
+
+ if (*clean_count == 0)
+ return 0;
+ if (*clean_count > cq->ring_size)
+ return -EBADR;
+
+ mutex_lock(&cq->cq_lock);
+
+ ntc = cq->next_to_clean;
+
+ num_to_clean = *clean_count;
+
+ for (i = 0; i < num_to_clean; i++) {
+ /* Fetch next descriptor and check if marked as done */
+ desc = IDPF_CTLQ_DESC(cq, ntc);
+ if (!(le16_to_cpu(desc->flags) & IDPF_CTLQ_FLAG_DD))
+ break;
+
+ /* strip off FW internal code */
+ desc_err = le16_to_cpu(desc->ret_val) & 0xff;
+
+ msg_status[i] = cq->bi.tx_msg[ntc];
+ msg_status[i]->status = desc_err;
+
+ cq->bi.tx_msg[ntc] = NULL;
+
+ /* Zero out any stale data */
+ memset(desc, 0, sizeof(*desc));
+
+ ntc++;
+ if (ntc == cq->ring_size)
+ ntc = 0;
+ }
+
+ cq->next_to_clean = ntc;
+
+ mutex_unlock(&cq->cq_lock);
+
+ /* Return number of descriptors actually cleaned */
+ *clean_count = i;
+
+ return 0;
+}
+
+/**
+ * idpf_ctlq_post_rx_buffs - post buffers to descriptor ring
+ * @hw: pointer to hw struct
+ * @cq: pointer to control queue handle
+ * @buff_count: (input|output) input is number of buffers caller is trying to
+ * return; output is number of buffers that were not posted
+ * @buffs: array of pointers to dma mem structs to be given to hardware
+ *
+ * Caller uses this function to return DMA buffers to the descriptor ring after
+ * consuming them; buff_count will be the number of buffers.
+ *
+ * Note: this function needs to be called after a receive call even
+ * if there are no DMA buffers to be returned, i.e. buff_count = 0,
+ * buffs = NULL to support direct commands
+ */
+int idpf_ctlq_post_rx_buffs(struct idpf_hw *hw, struct idpf_ctlq_info *cq,
+ u16 *buff_count, struct idpf_dma_mem **buffs)
+{
+ struct idpf_ctlq_desc *desc;
+ u16 ntp = cq->next_to_post;
+ bool buffs_avail = false;
+ u16 tbp = ntp + 1;
+ int i = 0;
+
+ if (*buff_count > cq->ring_size)
+ return -EBADR;
+
+ if (*buff_count > 0)
+ buffs_avail = true;
+
+ mutex_lock(&cq->cq_lock);
+
+ if (tbp >= cq->ring_size)
+ tbp = 0;
+
+ if (tbp == cq->next_to_clean)
+ /* Nothing to do */
+ goto post_buffs_out;
+
+ /* Post buffers for as many as provided or up until the last one used */
+ while (ntp != cq->next_to_clean) {
+ desc = IDPF_CTLQ_DESC(cq, ntp);
+
+ if (cq->bi.rx_buff[ntp])
+ goto fill_desc;
+ if (!buffs_avail) {
+ /* If the caller hasn't given us any buffers or
+ * there are none left, search the ring itself
+ * for an available buffer to move to this
+ * entry starting at the next entry in the ring
+ */
+ tbp = ntp + 1;
+
+ /* Wrap ring if necessary */
+ if (tbp >= cq->ring_size)
+ tbp = 0;
+
+ while (tbp != cq->next_to_clean) {
+ if (cq->bi.rx_buff[tbp]) {
+ cq->bi.rx_buff[ntp] =
+ cq->bi.rx_buff[tbp];
+ cq->bi.rx_buff[tbp] = NULL;
+
+ /* Found a buffer, no need to
+ * search anymore
+ */
+ break;
+ }
+
+ /* Wrap ring if necessary */
+ tbp++;
+ if (tbp >= cq->ring_size)
+ tbp = 0;
+ }
+
+ if (tbp == cq->next_to_clean)
+ goto post_buffs_out;
+ } else {
+ /* Give back pointer to DMA buffer */
+ cq->bi.rx_buff[ntp] = buffs[i];
+ i++;
+
+ if (i >= *buff_count)
+ buffs_avail = false;
+ }
+
+fill_desc:
+ desc->flags =
+ cpu_to_le16(IDPF_CTLQ_FLAG_BUF | IDPF_CTLQ_FLAG_RD);
+
+ /* Post buffers to descriptor */
+ desc->datalen = cpu_to_le16(cq->bi.rx_buff[ntp]->size);
+ desc->params.indirect.addr_high =
+ cpu_to_le32(upper_32_bits(cq->bi.rx_buff[ntp]->pa));
+ desc->params.indirect.addr_low =
+ cpu_to_le32(lower_32_bits(cq->bi.rx_buff[ntp]->pa));
+
+ ntp++;
+ if (ntp == cq->ring_size)
+ ntp = 0;
+ }
+
+post_buffs_out:
+ /* Only update tail if buffers were actually posted */
+ if (cq->next_to_post != ntp) {
+ if (ntp)
+ /* Update next_to_post to ntp - 1 since current ntp
+ * will not have a buffer
+ */
+ cq->next_to_post = ntp - 1;
+ else
+ /* Wrap to end of end ring since current ntp is 0 */
+ cq->next_to_post = cq->ring_size - 1;
+
+ wr32(hw, cq->reg.tail, cq->next_to_post);
+ }
+
+ mutex_unlock(&cq->cq_lock);
+
+ /* return the number of buffers that were not posted */
+ *buff_count = *buff_count - i;
+
+ return 0;
+}
+
+/**
+ * idpf_ctlq_recv - receive control queue message call back
+ * @cq: pointer to control queue handle to receive on
+ * @num_q_msg: (input|output) input number of messages that should be received;
+ * output number of messages actually received
+ * @q_msg: (output) array of received control queue messages on this q;
+ * needs to be pre-allocated by caller for as many messages as requested
+ *
+ * Called by interrupt handler or polling mechanism. Caller is expected
+ * to free buffers
+ */
+int idpf_ctlq_recv(struct idpf_ctlq_info *cq, u16 *num_q_msg,
+ struct idpf_ctlq_msg *q_msg)
+{
+ u16 num_to_clean, ntc, flags;
+ struct idpf_ctlq_desc *desc;
+ int err = 0;
+ u16 i;
+
+ if (*num_q_msg == 0)
+ return 0;
+ else if (*num_q_msg > cq->ring_size)
+ return -EBADR;
+
+ /* take the lock before we start messing with the ring */
+ mutex_lock(&cq->cq_lock);
+
+ ntc = cq->next_to_clean;
+
+ num_to_clean = *num_q_msg;
+
+ for (i = 0; i < num_to_clean; i++) {
+ /* Fetch next descriptor and check if marked as done */
+ desc = IDPF_CTLQ_DESC(cq, ntc);
+ flags = le16_to_cpu(desc->flags);
+
+ if (!(flags & IDPF_CTLQ_FLAG_DD))
+ break;
+
+ q_msg[i].vmvf_type = (flags &
+ (IDPF_CTLQ_FLAG_FTYPE_VM |
+ IDPF_CTLQ_FLAG_FTYPE_PF)) >>
+ IDPF_CTLQ_FLAG_FTYPE_S;
+
+ if (flags & IDPF_CTLQ_FLAG_ERR)
+ err = -EBADMSG;
+
+ q_msg[i].cookie.mbx.chnl_opcode =
+ le32_to_cpu(desc->v_opcode_dtype);
+ q_msg[i].cookie.mbx.chnl_retval =
+ le32_to_cpu(desc->v_retval);
+
+ q_msg[i].opcode = le16_to_cpu(desc->opcode);
+ q_msg[i].data_len = le16_to_cpu(desc->datalen);
+ q_msg[i].status = le16_to_cpu(desc->ret_val);
+
+ if (desc->datalen) {
+ memcpy(q_msg[i].ctx.indirect.context,
+ &desc->params.indirect, IDPF_INDIRECT_CTX_SIZE);
+
+ /* Assign pointer to dma buffer to ctlq_msg array
+ * to be given to upper layer
+ */
+ q_msg[i].ctx.indirect.payload = cq->bi.rx_buff[ntc];
+
+ /* Zero out pointer to DMA buffer info;
+ * will be repopulated by post buffers API
+ */
+ cq->bi.rx_buff[ntc] = NULL;
+ } else {
+ memcpy(q_msg[i].ctx.direct, desc->params.raw,
+ IDPF_DIRECT_CTX_SIZE);
+ }
+
+ /* Zero out stale data in descriptor */
+ memset(desc, 0, sizeof(struct idpf_ctlq_desc));
+
+ ntc++;
+ if (ntc == cq->ring_size)
+ ntc = 0;
+ }
+
+ cq->next_to_clean = ntc;
+
+ mutex_unlock(&cq->cq_lock);
+
+ *num_q_msg = i;
+ if (*num_q_msg == 0)
+ err = -ENOMSG;
+
+ return err;
+}
diff --git a/drivers/net/ethernet/intel/idpf/idpf_controlq.h b/drivers/net/ethernet/intel/idpf/idpf_controlq.h
new file mode 100644
index 0000000..c1aba09
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_controlq.h
@@ -0,0 +1,130 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_CONTROLQ_H_
+#define _IDPF_CONTROLQ_H_
+
+#include <linux/slab.h>
+
+#include "idpf_controlq_api.h"
+
+/* Maximum buffer length for all control queue types */
+#define IDPF_CTLQ_MAX_BUF_LEN 4096
+
+#define IDPF_CTLQ_DESC(R, i) \
+ (&(((struct idpf_ctlq_desc *)((R)->desc_ring.va))[i]))
+
+#define IDPF_CTLQ_DESC_UNUSED(R) \
+ ((u16)((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->ring_size) + \
+ (R)->next_to_clean - (R)->next_to_use - 1))
+
+/* Control Queue default settings */
+#define IDPF_CTRL_SQ_CMD_TIMEOUT 250 /* msecs */
+
+struct idpf_ctlq_desc {
+ /* Control queue descriptor flags */
+ __le16 flags;
+ /* Control queue message opcode */
+ __le16 opcode;
+ __le16 datalen; /* 0 for direct commands */
+ union {
+ __le16 ret_val;
+ __le16 pfid_vfid;
+#define IDPF_CTLQ_DESC_VF_ID_S 0
+#define IDPF_CTLQ_DESC_VF_ID_M (0x7FF << IDPF_CTLQ_DESC_VF_ID_S)
+#define IDPF_CTLQ_DESC_PF_ID_S 11
+#define IDPF_CTLQ_DESC_PF_ID_M (0x1F << IDPF_CTLQ_DESC_PF_ID_S)
+ };
+
+ /* Virtchnl message opcode and virtchnl descriptor type
+ * v_opcode=[27:0], v_dtype=[31:28]
+ */
+ __le32 v_opcode_dtype;
+ /* Virtchnl return value */
+ __le32 v_retval;
+ union {
+ struct {
+ __le32 param0;
+ __le32 param1;
+ __le32 param2;
+ __le32 param3;
+ } direct;
+ struct {
+ __le32 param0;
+ __le16 sw_cookie;
+ /* Virtchnl flags */
+ __le16 v_flags;
+ __le32 addr_high;
+ __le32 addr_low;
+ } indirect;
+ u8 raw[16];
+ } params;
+};
+
+/* Flags sub-structure
+ * |0 |1 |2 |3 |4 |5 |6 |7 |8 |9 |10 |11 |12 |13 |14 |15 |
+ * |DD |CMP|ERR| * RSV * |FTYPE | *RSV* |RD |VFC|BUF| HOST_ID |
+ */
+/* command flags and offsets */
+#define IDPF_CTLQ_FLAG_DD_S 0
+#define IDPF_CTLQ_FLAG_CMP_S 1
+#define IDPF_CTLQ_FLAG_ERR_S 2
+#define IDPF_CTLQ_FLAG_FTYPE_S 6
+#define IDPF_CTLQ_FLAG_RD_S 10
+#define IDPF_CTLQ_FLAG_VFC_S 11
+#define IDPF_CTLQ_FLAG_BUF_S 12
+#define IDPF_CTLQ_FLAG_HOST_ID_S 13
+
+#define IDPF_CTLQ_FLAG_DD BIT(IDPF_CTLQ_FLAG_DD_S) /* 0x1 */
+#define IDPF_CTLQ_FLAG_CMP BIT(IDPF_CTLQ_FLAG_CMP_S) /* 0x2 */
+#define IDPF_CTLQ_FLAG_ERR BIT(IDPF_CTLQ_FLAG_ERR_S) /* 0x4 */
+#define IDPF_CTLQ_FLAG_FTYPE_VM BIT(IDPF_CTLQ_FLAG_FTYPE_S) /* 0x40 */
+#define IDPF_CTLQ_FLAG_FTYPE_PF BIT(IDPF_CTLQ_FLAG_FTYPE_S + 1) /* 0x80 */
+#define IDPF_CTLQ_FLAG_RD BIT(IDPF_CTLQ_FLAG_RD_S) /* 0x400 */
+#define IDPF_CTLQ_FLAG_VFC BIT(IDPF_CTLQ_FLAG_VFC_S) /* 0x800 */
+#define IDPF_CTLQ_FLAG_BUF BIT(IDPF_CTLQ_FLAG_BUF_S) /* 0x1000 */
+
+/* Host ID is a special field that has 3b and not a 1b flag */
+#define IDPF_CTLQ_FLAG_HOST_ID_M MAKE_MASK(0x7000UL, IDPF_CTLQ_FLAG_HOST_ID_S)
+
+struct idpf_mbxq_desc {
+ u8 pad[8]; /* CTLQ flags/opcode/len/retval fields */
+ u32 chnl_opcode; /* avoid confusion with desc->opcode */
+ u32 chnl_retval; /* ditto for desc->retval */
+ u32 pf_vf_id; /* used by CP when sending to PF */
+};
+
+/* Define the driver hardware struct to replace other control structs as needed
+ * Align to ctlq_hw_info
+ */
+struct idpf_hw {
+ void __iomem *hw_addr;
+ resource_size_t hw_addr_len;
+
+ struct idpf_adapter *back;
+
+ /* control queue - send and receive */
+ struct idpf_ctlq_info *asq;
+ struct idpf_ctlq_info *arq;
+
+ /* pci info */
+ u16 device_id;
+ u16 vendor_id;
+ u16 subsystem_device_id;
+ u16 subsystem_vendor_id;
+ u8 revision_id;
+ bool adapter_stopped;
+
+ struct list_head cq_list_head;
+};
+
+int idpf_ctlq_alloc_ring_res(struct idpf_hw *hw,
+ struct idpf_ctlq_info *cq);
+
+void idpf_ctlq_dealloc_ring_res(struct idpf_hw *hw, struct idpf_ctlq_info *cq);
+
+/* prototype for functions used for dynamic memory allocation */
+void *idpf_alloc_dma_mem(struct idpf_hw *hw, struct idpf_dma_mem *mem,
+ u64 size);
+void idpf_free_dma_mem(struct idpf_hw *hw, struct idpf_dma_mem *mem);
+#endif /* _IDPF_CONTROLQ_H_ */
diff --git a/drivers/net/ethernet/intel/idpf/idpf_controlq_api.h b/drivers/net/ethernet/intel/idpf/idpf_controlq_api.h
new file mode 100644
index 0000000..8dee098
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_controlq_api.h
@@ -0,0 +1,169 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_CONTROLQ_API_H_
+#define _IDPF_CONTROLQ_API_H_
+
+#include "idpf_mem.h"
+
+struct idpf_hw;
+
+/* Used for queue init, response and events */
+enum idpf_ctlq_type {
+ IDPF_CTLQ_TYPE_MAILBOX_TX = 0,
+ IDPF_CTLQ_TYPE_MAILBOX_RX = 1,
+ IDPF_CTLQ_TYPE_CONFIG_TX = 2,
+ IDPF_CTLQ_TYPE_CONFIG_RX = 3,
+ IDPF_CTLQ_TYPE_EVENT_RX = 4,
+ IDPF_CTLQ_TYPE_RDMA_TX = 5,
+ IDPF_CTLQ_TYPE_RDMA_RX = 6,
+ IDPF_CTLQ_TYPE_RDMA_COMPL = 7
+};
+
+/* Generic Control Queue Structures */
+struct idpf_ctlq_reg {
+ /* used for queue tracking */
+ u32 head;
+ u32 tail;
+ /* Below applies only to default mb (if present) */
+ u32 len;
+ u32 bah;
+ u32 bal;
+ u32 len_mask;
+ u32 len_ena_mask;
+ u32 head_mask;
+};
+
+/* Generic queue msg structure */
+struct idpf_ctlq_msg {
+ u8 vmvf_type; /* represents the source of the message on recv */
+#define IDPF_VMVF_TYPE_VF 0
+#define IDPF_VMVF_TYPE_VM 1
+#define IDPF_VMVF_TYPE_PF 2
+ u8 host_id;
+ /* 3b field used only when sending a message to CP - to be used in
+ * combination with target func_id to route the message
+ */
+#define IDPF_HOST_ID_MASK 0x7
+
+ u16 opcode;
+ u16 data_len; /* data_len = 0 when no payload is attached */
+ union {
+ u16 func_id; /* when sending a message */
+ u16 status; /* when receiving a message */
+ };
+ union {
+ struct {
+ u32 chnl_opcode;
+ u32 chnl_retval;
+ } mbx;
+ } cookie;
+ union {
+#define IDPF_DIRECT_CTX_SIZE 16
+#define IDPF_INDIRECT_CTX_SIZE 8
+ /* 16 bytes of context can be provided or 8 bytes of context
+ * plus the address of a DMA buffer
+ */
+ u8 direct[IDPF_DIRECT_CTX_SIZE];
+ struct {
+ u8 context[IDPF_INDIRECT_CTX_SIZE];
+ struct idpf_dma_mem *payload;
+ } indirect;
+ } ctx;
+};
+
+/* Generic queue info structures */
+/* MB, CONFIG and EVENT q do not have extended info */
+struct idpf_ctlq_create_info {
+ enum idpf_ctlq_type type;
+ int id; /* absolute queue offset passed as input
+ * -1 for default mailbox if present
+ */
+ u16 len; /* Queue length passed as input */
+ u16 buf_size; /* buffer size passed as input */
+ u64 base_address; /* output, HPA of the Queue start */
+ struct idpf_ctlq_reg reg; /* registers accessed by ctlqs */
+
+ int ext_info_size;
+ void *ext_info; /* Specific to q type */
+};
+
+/* Control Queue information */
+struct idpf_ctlq_info {
+ struct list_head cq_list;
+
+ enum idpf_ctlq_type cq_type;
+ int q_id;
+ struct mutex cq_lock; /* control queue lock */
+ /* used for interrupt processing */
+ u16 next_to_use;
+ u16 next_to_clean;
+ u16 next_to_post; /* starting descriptor to post buffers
+ * to after recev
+ */
+
+ struct idpf_dma_mem desc_ring; /* descriptor ring memory
+ * idpf_dma_mem is defined in OSdep.h
+ */
+ union {
+ struct idpf_dma_mem **rx_buff;
+ struct idpf_ctlq_msg **tx_msg;
+ } bi;
+
+ u16 buf_size; /* queue buffer size */
+ u16 ring_size; /* Number of descriptors */
+ struct idpf_ctlq_reg reg; /* registers accessed by ctlqs */
+};
+
+/**
+ * enum idpf_mbx_opc - PF/VF mailbox commands
+ * @idpf_mbq_opc_send_msg_to_cp: used by PF or VF to send a message to its CP
+ */
+enum idpf_mbx_opc {
+ idpf_mbq_opc_send_msg_to_cp = 0x0801,
+};
+
+/* API supported for control queue management */
+/* Will init all required q including default mb. "q_info" is an array of
+ * create_info structs equal to the number of control queues to be created.
+ */
+int idpf_ctlq_init(struct idpf_hw *hw, u8 num_q,
+ struct idpf_ctlq_create_info *q_info);
+
+/* Allocate and initialize a single control queue, which will be added to the
+ * control queue list; returns a handle to the created control queue
+ */
+int idpf_ctlq_add(struct idpf_hw *hw,
+ struct idpf_ctlq_create_info *qinfo,
+ struct idpf_ctlq_info **cq);
+
+/* Deinitialize and deallocate a single control queue */
+void idpf_ctlq_remove(struct idpf_hw *hw,
+ struct idpf_ctlq_info *cq);
+
+/* Sends messages to HW and will also free the buffer*/
+int idpf_ctlq_send(struct idpf_hw *hw,
+ struct idpf_ctlq_info *cq,
+ u16 num_q_msg,
+ struct idpf_ctlq_msg q_msg[]);
+
+/* Receives messages and called by interrupt handler/polling
+ * initiated by app/process. Also caller is supposed to free the buffers
+ */
+int idpf_ctlq_recv(struct idpf_ctlq_info *cq, u16 *num_q_msg,
+ struct idpf_ctlq_msg *q_msg);
+
+/* Reclaims send descriptors on HW write back */
+int idpf_ctlq_clean_sq(struct idpf_ctlq_info *cq, u16 *clean_count,
+ struct idpf_ctlq_msg *msg_status[]);
+
+/* Indicate RX buffers are done being processed */
+int idpf_ctlq_post_rx_buffs(struct idpf_hw *hw,
+ struct idpf_ctlq_info *cq,
+ u16 *buff_count,
+ struct idpf_dma_mem **buffs);
+
+/* Will destroy all q including the default mb */
+void idpf_ctlq_deinit(struct idpf_hw *hw);
+
+#endif /* _IDPF_CONTROLQ_API_H_ */
diff --git a/drivers/net/ethernet/intel/idpf/idpf_controlq_setup.c b/drivers/net/ethernet/intel/idpf/idpf_controlq_setup.c
new file mode 100644
index 0000000..a942a63
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_controlq_setup.c
@@ -0,0 +1,171 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf_controlq.h"
+
+/**
+ * idpf_ctlq_alloc_desc_ring - Allocate Control Queue (CQ) rings
+ * @hw: pointer to hw struct
+ * @cq: pointer to the specific Control queue
+ */
+static int idpf_ctlq_alloc_desc_ring(struct idpf_hw *hw,
+ struct idpf_ctlq_info *cq)
+{
+ size_t size = cq->ring_size * sizeof(struct idpf_ctlq_desc);
+
+ cq->desc_ring.va = idpf_alloc_dma_mem(hw, &cq->desc_ring, size);
+ if (!cq->desc_ring.va)
+ return -ENOMEM;
+
+ return 0;
+}
+
+/**
+ * idpf_ctlq_alloc_bufs - Allocate Control Queue (CQ) buffers
+ * @hw: pointer to hw struct
+ * @cq: pointer to the specific Control queue
+ *
+ * Allocate the buffer head for all control queues, and if it's a receive
+ * queue, allocate DMA buffers
+ */
+static int idpf_ctlq_alloc_bufs(struct idpf_hw *hw,
+ struct idpf_ctlq_info *cq)
+{
+ int i;
+
+ /* Do not allocate DMA buffers for transmit queues */
+ if (cq->cq_type == IDPF_CTLQ_TYPE_MAILBOX_TX)
+ return 0;
+
+ /* We'll be allocating the buffer info memory first, then we can
+ * allocate the mapped buffers for the event processing
+ */
+ cq->bi.rx_buff = kcalloc(cq->ring_size, sizeof(struct idpf_dma_mem *),
+ GFP_KERNEL);
+ if (!cq->bi.rx_buff)
+ return -ENOMEM;
+
+ /* allocate the mapped buffers (except for the last one) */
+ for (i = 0; i < cq->ring_size - 1; i++) {
+ struct idpf_dma_mem *bi;
+ int num = 1; /* number of idpf_dma_mem to be allocated */
+
+ cq->bi.rx_buff[i] = kcalloc(num, sizeof(struct idpf_dma_mem),
+ GFP_KERNEL);
+ if (!cq->bi.rx_buff[i])
+ goto unwind_alloc_cq_bufs;
+
+ bi = cq->bi.rx_buff[i];
+
+ bi->va = idpf_alloc_dma_mem(hw, bi, cq->buf_size);
+ if (!bi->va) {
+ /* unwind will not free the failed entry */
+ kfree(cq->bi.rx_buff[i]);
+ goto unwind_alloc_cq_bufs;
+ }
+ }
+
+ return 0;
+
+unwind_alloc_cq_bufs:
+ /* don't try to free the one that failed... */
+ i--;
+ for (; i >= 0; i--) {
+ idpf_free_dma_mem(hw, cq->bi.rx_buff[i]);
+ kfree(cq->bi.rx_buff[i]);
+ }
+ kfree(cq->bi.rx_buff);
+
+ return -ENOMEM;
+}
+
+/**
+ * idpf_ctlq_free_desc_ring - Free Control Queue (CQ) rings
+ * @hw: pointer to hw struct
+ * @cq: pointer to the specific Control queue
+ *
+ * This assumes the posted send buffers have already been cleaned
+ * and de-allocated
+ */
+static void idpf_ctlq_free_desc_ring(struct idpf_hw *hw,
+ struct idpf_ctlq_info *cq)
+{
+ idpf_free_dma_mem(hw, &cq->desc_ring);
+}
+
+/**
+ * idpf_ctlq_free_bufs - Free CQ buffer info elements
+ * @hw: pointer to hw struct
+ * @cq: pointer to the specific Control queue
+ *
+ * Free the DMA buffers for RX queues, and DMA buffer header for both RX and TX
+ * queues. The upper layers are expected to manage freeing of TX DMA buffers
+ */
+static void idpf_ctlq_free_bufs(struct idpf_hw *hw, struct idpf_ctlq_info *cq)
+{
+ void *bi;
+
+ if (cq->cq_type == IDPF_CTLQ_TYPE_MAILBOX_RX) {
+ int i;
+
+ /* free DMA buffers for rx queues*/
+ for (i = 0; i < cq->ring_size; i++) {
+ if (cq->bi.rx_buff[i]) {
+ idpf_free_dma_mem(hw, cq->bi.rx_buff[i]);
+ kfree(cq->bi.rx_buff[i]);
+ }
+ }
+
+ bi = (void *)cq->bi.rx_buff;
+ } else {
+ bi = (void *)cq->bi.tx_msg;
+ }
+
+ /* free the buffer header */
+ kfree(bi);
+}
+
+/**
+ * idpf_ctlq_dealloc_ring_res - Free memory allocated for control queue
+ * @hw: pointer to hw struct
+ * @cq: pointer to the specific Control queue
+ *
+ * Free the memory used by the ring, buffers and other related structures
+ */
+void idpf_ctlq_dealloc_ring_res(struct idpf_hw *hw, struct idpf_ctlq_info *cq)
+{
+ /* free ring buffers and the ring itself */
+ idpf_ctlq_free_bufs(hw, cq);
+ idpf_ctlq_free_desc_ring(hw, cq);
+}
+
+/**
+ * idpf_ctlq_alloc_ring_res - allocate memory for descriptor ring and bufs
+ * @hw: pointer to hw struct
+ * @cq: pointer to control queue struct
+ *
+ * Do *NOT* hold cq_lock when calling this as the memory allocation routines
+ * called are not going to be atomic context safe
+ */
+int idpf_ctlq_alloc_ring_res(struct idpf_hw *hw, struct idpf_ctlq_info *cq)
+{
+ int err;
+
+ /* allocate the ring memory */
+ err = idpf_ctlq_alloc_desc_ring(hw, cq);
+ if (err)
+ return err;
+
+ /* allocate buffers in the rings */
+ err = idpf_ctlq_alloc_bufs(hw, cq);
+ if (err)
+ goto idpf_init_cq_free_ring;
+
+ /* success! */
+ return 0;
+
+idpf_init_cq_free_ring:
+ idpf_free_dma_mem(hw, &cq->desc_ring);
+
+ return err;
+}
diff --git a/drivers/net/ethernet/intel/idpf/idpf_dev.c b/drivers/net/ethernet/intel/idpf/idpf_dev.c
new file mode 100644
index 0000000..34ad1ac
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_dev.c
@@ -0,0 +1,165 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf.h"
+#include "idpf_lan_pf_regs.h"
+
+#define IDPF_PF_ITR_IDX_SPACING 0x4
+
+/**
+ * idpf_ctlq_reg_init - initialize default mailbox registers
+ * @cq: pointer to the array of create control queues
+ */
+static void idpf_ctlq_reg_init(struct idpf_ctlq_create_info *cq)
+{
+ int i;
+
+ for (i = 0; i < IDPF_NUM_DFLT_MBX_Q; i++) {
+ struct idpf_ctlq_create_info *ccq = cq + i;
+
+ switch (ccq->type) {
+ case IDPF_CTLQ_TYPE_MAILBOX_TX:
+ /* set head and tail registers in our local struct */
+ ccq->reg.head = PF_FW_ATQH;
+ ccq->reg.tail = PF_FW_ATQT;
+ ccq->reg.len = PF_FW_ATQLEN;
+ ccq->reg.bah = PF_FW_ATQBAH;
+ ccq->reg.bal = PF_FW_ATQBAL;
+ ccq->reg.len_mask = PF_FW_ATQLEN_ATQLEN_M;
+ ccq->reg.len_ena_mask = PF_FW_ATQLEN_ATQENABLE_M;
+ ccq->reg.head_mask = PF_FW_ATQH_ATQH_M;
+ break;
+ case IDPF_CTLQ_TYPE_MAILBOX_RX:
+ /* set head and tail registers in our local struct */
+ ccq->reg.head = PF_FW_ARQH;
+ ccq->reg.tail = PF_FW_ARQT;
+ ccq->reg.len = PF_FW_ARQLEN;
+ ccq->reg.bah = PF_FW_ARQBAH;
+ ccq->reg.bal = PF_FW_ARQBAL;
+ ccq->reg.len_mask = PF_FW_ARQLEN_ARQLEN_M;
+ ccq->reg.len_ena_mask = PF_FW_ARQLEN_ARQENABLE_M;
+ ccq->reg.head_mask = PF_FW_ARQH_ARQH_M;
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+/**
+ * idpf_mb_intr_reg_init - Initialize mailbox interrupt register
+ * @adapter: adapter structure
+ */
+static void idpf_mb_intr_reg_init(struct idpf_adapter *adapter)
+{
+ struct idpf_intr_reg *intr = &adapter->mb_vector.intr_reg;
+ u32 dyn_ctl = le32_to_cpu(adapter->caps.mailbox_dyn_ctl);
+
+ intr->dyn_ctl = idpf_get_reg_addr(adapter, dyn_ctl);
+ intr->dyn_ctl_intena_m = PF_GLINT_DYN_CTL_INTENA_M;
+ intr->dyn_ctl_itridx_m = PF_GLINT_DYN_CTL_ITR_INDX_M;
+ intr->icr_ena = idpf_get_reg_addr(adapter, PF_INT_DIR_OICR_ENA);
+ intr->icr_ena_ctlq_m = PF_INT_DIR_OICR_ENA_M;
+}
+
+/**
+ * idpf_intr_reg_init - Initialize interrupt registers
+ * @vport: virtual port structure
+ */
+static int idpf_intr_reg_init(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ int num_vecs = vport->num_q_vectors;
+ struct idpf_vec_regs *reg_vals;
+ int num_regs, i, err = 0;
+ u32 rx_itr, tx_itr;
+ u16 total_vecs;
+
+ total_vecs = idpf_get_reserved_vecs(vport->adapter);
+ reg_vals = kcalloc(total_vecs, sizeof(struct idpf_vec_regs),
+ GFP_KERNEL);
+ if (!reg_vals)
+ return -ENOMEM;
+
+ num_regs = idpf_get_reg_intr_vecs(vport, reg_vals);
+ if (num_regs < num_vecs) {
+ err = -EINVAL;
+ goto free_reg_vals;
+ }
+
+ for (i = 0; i < num_vecs; i++) {
+ struct idpf_q_vector *q_vector = &vport->q_vectors[i];
+ u16 vec_id = vport->q_vector_idxs[i] - IDPF_MBX_Q_VEC;
+ struct idpf_intr_reg *intr = &q_vector->intr_reg;
+ u32 spacing;
+
+ intr->dyn_ctl = idpf_get_reg_addr(adapter,
+ reg_vals[vec_id].dyn_ctl_reg);
+ intr->dyn_ctl_intena_m = PF_GLINT_DYN_CTL_INTENA_M;
+ intr->dyn_ctl_itridx_s = PF_GLINT_DYN_CTL_ITR_INDX_S;
+ intr->dyn_ctl_intrvl_s = PF_GLINT_DYN_CTL_INTERVAL_S;
+
+ spacing = IDPF_ITR_IDX_SPACING(reg_vals[vec_id].itrn_index_spacing,
+ IDPF_PF_ITR_IDX_SPACING);
+ rx_itr = PF_GLINT_ITR_ADDR(VIRTCHNL2_ITR_IDX_0,
+ reg_vals[vec_id].itrn_reg,
+ spacing);
+ tx_itr = PF_GLINT_ITR_ADDR(VIRTCHNL2_ITR_IDX_1,
+ reg_vals[vec_id].itrn_reg,
+ spacing);
+ intr->rx_itr = idpf_get_reg_addr(adapter, rx_itr);
+ intr->tx_itr = idpf_get_reg_addr(adapter, tx_itr);
+ }
+
+free_reg_vals:
+ kfree(reg_vals);
+
+ return err;
+}
+
+/**
+ * idpf_reset_reg_init - Initialize reset registers
+ * @adapter: Driver specific private structure
+ */
+static void idpf_reset_reg_init(struct idpf_adapter *adapter)
+{
+ adapter->reset_reg.rstat = idpf_get_reg_addr(adapter, PFGEN_RSTAT);
+ adapter->reset_reg.rstat_m = PFGEN_RSTAT_PFR_STATE_M;
+}
+
+/**
+ * idpf_trigger_reset - trigger reset
+ * @adapter: Driver specific private structure
+ * @trig_cause: Reason to trigger a reset
+ */
+static void idpf_trigger_reset(struct idpf_adapter *adapter,
+ enum idpf_flags __always_unused trig_cause)
+{
+ u32 reset_reg;
+
+ reset_reg = readl(idpf_get_reg_addr(adapter, PFGEN_CTRL));
+ writel(reset_reg | PFGEN_CTRL_PFSWR,
+ idpf_get_reg_addr(adapter, PFGEN_CTRL));
+}
+
+/**
+ * idpf_reg_ops_init - Initialize register API function pointers
+ * @adapter: Driver specific private structure
+ */
+static void idpf_reg_ops_init(struct idpf_adapter *adapter)
+{
+ adapter->dev_ops.reg_ops.ctlq_reg_init = idpf_ctlq_reg_init;
+ adapter->dev_ops.reg_ops.intr_reg_init = idpf_intr_reg_init;
+ adapter->dev_ops.reg_ops.mb_intr_reg_init = idpf_mb_intr_reg_init;
+ adapter->dev_ops.reg_ops.reset_reg_init = idpf_reset_reg_init;
+ adapter->dev_ops.reg_ops.trigger_reset = idpf_trigger_reset;
+}
+
+/**
+ * idpf_dev_ops_init - Initialize device API function pointers
+ * @adapter: Driver specific private structure
+ */
+void idpf_dev_ops_init(struct idpf_adapter *adapter)
+{
+ idpf_reg_ops_init(adapter);
+}
diff --git a/drivers/net/ethernet/intel/idpf/idpf_devids.h b/drivers/net/ethernet/intel/idpf/idpf_devids.h
new file mode 100644
index 0000000..5154a52
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_devids.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_DEVIDS_H_
+#define _IDPF_DEVIDS_H_
+
+#define IDPF_DEV_ID_PF 0x1452
+#define IDPF_DEV_ID_VF 0x145C
+
+#endif /* _IDPF_DEVIDS_H_ */
diff --git a/drivers/net/ethernet/intel/idpf/idpf_ethtool.c b/drivers/net/ethernet/intel/idpf/idpf_ethtool.c
new file mode 100644
index 0000000..52ea386
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_ethtool.c
@@ -0,0 +1,1369 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf.h"
+
+/**
+ * idpf_get_rxnfc - command to get RX flow classification rules
+ * @netdev: network interface device structure
+ * @cmd: ethtool rxnfc command
+ * @rule_locs: pointer to store rule locations
+ *
+ * Returns Success if the command is supported.
+ */
+static int idpf_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
+ u32 __always_unused *rule_locs)
+{
+ struct idpf_vport *vport;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ switch (cmd->cmd) {
+ case ETHTOOL_GRXRINGS:
+ cmd->data = vport->num_rxq;
+ idpf_vport_ctrl_unlock(netdev);
+
+ return 0;
+ default:
+ break;
+ }
+
+ idpf_vport_ctrl_unlock(netdev);
+
+ return -EOPNOTSUPP;
+}
+
+/**
+ * idpf_get_rxfh_key_size - get the RSS hash key size
+ * @netdev: network interface device structure
+ *
+ * Returns the key size on success, error value on failure.
+ */
+static u32 idpf_get_rxfh_key_size(struct net_device *netdev)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport_user_config_data *user_config;
+
+ if (!idpf_is_cap_ena_all(np->adapter, IDPF_RSS_CAPS, IDPF_CAP_RSS))
+ return -EOPNOTSUPP;
+
+ user_config = &np->adapter->vport_config[np->vport_idx]->user_config;
+
+ return user_config->rss_data.rss_key_size;
+}
+
+/**
+ * idpf_get_rxfh_indir_size - get the rx flow hash indirection table size
+ * @netdev: network interface device structure
+ *
+ * Returns the table size on success, error value on failure.
+ */
+static u32 idpf_get_rxfh_indir_size(struct net_device *netdev)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport_user_config_data *user_config;
+
+ if (!idpf_is_cap_ena_all(np->adapter, IDPF_RSS_CAPS, IDPF_CAP_RSS))
+ return -EOPNOTSUPP;
+
+ user_config = &np->adapter->vport_config[np->vport_idx]->user_config;
+
+ return user_config->rss_data.rss_lut_size;
+}
+
+/**
+ * idpf_get_rxfh - get the rx flow hash indirection table
+ * @netdev: network interface device structure
+ * @indir: indirection table
+ * @key: hash key
+ * @hfunc: hash function in use
+ *
+ * Reads the indirection table directly from the hardware. Always returns 0.
+ */
+static int idpf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
+ u8 *hfunc)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_rss_data *rss_data;
+ struct idpf_adapter *adapter;
+ int err = 0;
+ u16 i;
+
+ idpf_vport_ctrl_lock(netdev);
+
+ adapter = np->adapter;
+
+ if (!idpf_is_cap_ena_all(adapter, IDPF_RSS_CAPS, IDPF_CAP_RSS)) {
+ err = -EOPNOTSUPP;
+ goto unlock_mutex;
+ }
+
+ rss_data = &adapter->vport_config[np->vport_idx]->user_config.rss_data;
+ if (np->state != __IDPF_VPORT_UP)
+ goto unlock_mutex;
+
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+
+ if (key)
+ memcpy(key, rss_data->rss_key, rss_data->rss_key_size);
+
+ if (indir) {
+ for (i = 0; i < rss_data->rss_lut_size; i++)
+ indir[i] = rss_data->rss_lut[i];
+ }
+
+unlock_mutex:
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * idpf_set_rxfh - set the rx flow hash indirection table
+ * @netdev: network interface device structure
+ * @indir: indirection table
+ * @key: hash key
+ * @hfunc: hash function to use
+ *
+ * Returns -EINVAL if the table specifies an invalid queue id, otherwise
+ * returns 0 after programming the table.
+ */
+static int idpf_set_rxfh(struct net_device *netdev, const u32 *indir,
+ const u8 *key, const u8 hfunc)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_rss_data *rss_data;
+ struct idpf_adapter *adapter;
+ struct idpf_vport *vport;
+ int err = 0;
+ u16 lut;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ adapter = vport->adapter;
+
+ if (!idpf_is_cap_ena_all(adapter, IDPF_RSS_CAPS, IDPF_CAP_RSS)) {
+ err = -EOPNOTSUPP;
+ goto unlock_mutex;
+ }
+
+ rss_data = &adapter->vport_config[vport->idx]->user_config.rss_data;
+ if (np->state != __IDPF_VPORT_UP)
+ goto unlock_mutex;
+
+ if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) {
+ err = -EOPNOTSUPP;
+ goto unlock_mutex;
+ }
+
+ if (key)
+ memcpy(rss_data->rss_key, key, rss_data->rss_key_size);
+
+ if (indir) {
+ for (lut = 0; lut < rss_data->rss_lut_size; lut++)
+ rss_data->rss_lut[lut] = indir[lut];
+ }
+
+ err = idpf_config_rss(vport);
+
+unlock_mutex:
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * idpf_get_channels: get the number of channels supported by the device
+ * @netdev: network interface device structure
+ * @ch: channel information structure
+ *
+ * Report maximum of TX and RX. Report one extra channel to match our MailBox
+ * Queue.
+ */
+static void idpf_get_channels(struct net_device *netdev,
+ struct ethtool_channels *ch)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport_config *vport_config;
+ u16 num_txq, num_rxq;
+ u16 combined;
+
+ vport_config = np->adapter->vport_config[np->vport_idx];
+
+ num_txq = vport_config->user_config.num_req_tx_qs;
+ num_rxq = vport_config->user_config.num_req_rx_qs;
+
+ combined = min(num_txq, num_rxq);
+
+ /* Report maximum channels */
+ ch->max_combined = min_t(u16, vport_config->max_q.max_txq,
+ vport_config->max_q.max_rxq);
+ ch->max_rx = vport_config->max_q.max_rxq;
+ ch->max_tx = vport_config->max_q.max_txq;
+
+ ch->max_other = IDPF_MAX_MBXQ;
+ ch->other_count = IDPF_MAX_MBXQ;
+
+ ch->combined_count = combined;
+ ch->rx_count = num_rxq - combined;
+ ch->tx_count = num_txq - combined;
+}
+
+/**
+ * idpf_set_channels: set the new channel count
+ * @netdev: network interface device structure
+ * @ch: channel information structure
+ *
+ * Negotiate a new number of channels with CP. Returns 0 on success, negative
+ * on failure.
+ */
+static int idpf_set_channels(struct net_device *netdev,
+ struct ethtool_channels *ch)
+{
+ struct idpf_vport_config *vport_config;
+ u16 combined, num_txq, num_rxq;
+ unsigned int num_req_tx_q;
+ unsigned int num_req_rx_q;
+ struct idpf_vport *vport;
+ struct device *dev;
+ int err = 0;
+ u16 idx;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ idx = vport->idx;
+ vport_config = vport->adapter->vport_config[idx];
+
+ num_txq = vport_config->user_config.num_req_tx_qs;
+ num_rxq = vport_config->user_config.num_req_rx_qs;
+
+ combined = min(num_txq, num_rxq);
+
+ /* these checks are for cases where user didn't specify a particular
+ * value on cmd line but we get non-zero value anyway via
+ * get_channels(); look at ethtool.c in ethtool repository (the user
+ * space part), particularly, do_schannels() routine
+ */
+ if (ch->combined_count == combined)
+ ch->combined_count = 0;
+ if (ch->combined_count && ch->rx_count == num_rxq - combined)
+ ch->rx_count = 0;
+ if (ch->combined_count && ch->tx_count == num_txq - combined)
+ ch->tx_count = 0;
+
+ num_req_tx_q = ch->combined_count + ch->tx_count;
+ num_req_rx_q = ch->combined_count + ch->rx_count;
+
+ dev = &vport->adapter->pdev->dev;
+ /* It's possible to specify number of queues that exceeds max.
+ * Stack checks max combined_count and max [tx|rx]_count but not the
+ * max combined_count + [tx|rx]_count. These checks should catch that.
+ */
+ if (num_req_tx_q > vport_config->max_q.max_txq) {
+ dev_info(dev, "Maximum TX queues is %d\n",
+ vport_config->max_q.max_txq);
+ err = -EINVAL;
+ goto unlock_mutex;
+ }
+ if (num_req_rx_q > vport_config->max_q.max_rxq) {
+ dev_info(dev, "Maximum RX queues is %d\n",
+ vport_config->max_q.max_rxq);
+ err = -EINVAL;
+ goto unlock_mutex;
+ }
+
+ if (num_req_tx_q == num_txq && num_req_rx_q == num_rxq)
+ goto unlock_mutex;
+
+ vport_config->user_config.num_req_tx_qs = num_req_tx_q;
+ vport_config->user_config.num_req_rx_qs = num_req_rx_q;
+
+ err = idpf_initiate_soft_reset(vport, IDPF_SR_Q_CHANGE);
+ if (err) {
+ /* roll back queue change */
+ vport_config->user_config.num_req_tx_qs = num_txq;
+ vport_config->user_config.num_req_rx_qs = num_rxq;
+ }
+
+unlock_mutex:
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * idpf_get_ringparam - Get ring parameters
+ * @netdev: network interface device structure
+ * @ring: ethtool ringparam structure
+ * @kring: unused
+ * @ext_ack: unused
+ *
+ * Returns current ring parameters. TX and RX rings are reported separately,
+ * but the number of rings is not reported.
+ */
+static void idpf_get_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring,
+ struct kernel_ethtool_ringparam *kring,
+ struct netlink_ext_ack *ext_ack)
+{
+ struct idpf_vport *vport;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ ring->rx_max_pending = IDPF_MAX_RXQ_DESC;
+ ring->tx_max_pending = IDPF_MAX_TXQ_DESC;
+ ring->rx_pending = vport->rxq_desc_count;
+ ring->tx_pending = vport->txq_desc_count;
+
+ idpf_vport_ctrl_unlock(netdev);
+}
+
+/**
+ * idpf_set_ringparam - Set ring parameters
+ * @netdev: network interface device structure
+ * @ring: ethtool ringparam structure
+ * @kring: unused
+ * @ext_ack: unused
+ *
+ * Sets ring parameters. TX and RX rings are controlled separately, but the
+ * number of rings is not specified, so all rings get the same settings.
+ */
+static int idpf_set_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring,
+ struct kernel_ethtool_ringparam *kring,
+ struct netlink_ext_ack *ext_ack)
+{
+ struct idpf_vport_user_config_data *config_data;
+ u32 new_rx_count, new_tx_count;
+ struct idpf_vport *vport;
+ int i, err = 0;
+ u16 idx;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ idx = vport->idx;
+
+ if (ring->tx_pending < IDPF_MIN_TXQ_DESC) {
+ netdev_err(netdev, "Descriptors requested (Tx: %u) is less than min supported (%u)\n",
+ ring->tx_pending,
+ IDPF_MIN_TXQ_DESC);
+ err = -EINVAL;
+ goto unlock_mutex;
+ }
+
+ if (ring->rx_pending < IDPF_MIN_RXQ_DESC) {
+ netdev_err(netdev, "Descriptors requested (Rx: %u) is less than min supported (%u)\n",
+ ring->rx_pending,
+ IDPF_MIN_RXQ_DESC);
+ err = -EINVAL;
+ goto unlock_mutex;
+ }
+
+ new_rx_count = ALIGN(ring->rx_pending, IDPF_REQ_RXQ_DESC_MULTIPLE);
+ if (new_rx_count != ring->rx_pending)
+ netdev_info(netdev, "Requested Rx descriptor count rounded up to %u\n",
+ new_rx_count);
+
+ new_tx_count = ALIGN(ring->tx_pending, IDPF_REQ_DESC_MULTIPLE);
+ if (new_tx_count != ring->tx_pending)
+ netdev_info(netdev, "Requested Tx descriptor count rounded up to %u\n",
+ new_tx_count);
+
+ if (new_tx_count == vport->txq_desc_count &&
+ new_rx_count == vport->rxq_desc_count)
+ goto unlock_mutex;
+
+ config_data = &vport->adapter->vport_config[idx]->user_config;
+ config_data->num_req_txq_desc = new_tx_count;
+ config_data->num_req_rxq_desc = new_rx_count;
+
+ /* Since we adjusted the RX completion queue count, the RX buffer queue
+ * descriptor count needs to be adjusted as well
+ */
+ for (i = 0; i < vport->num_bufqs_per_qgrp; i++)
+ vport->bufq_desc_count[i] =
+ IDPF_RX_BUFQ_DESC_COUNT(new_rx_count,
+ vport->num_bufqs_per_qgrp);
+
+ err = idpf_initiate_soft_reset(vport, IDPF_SR_Q_DESC_CHANGE);
+
+unlock_mutex:
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * struct idpf_stats - definition for an ethtool statistic
+ * @stat_string: statistic name to display in ethtool -S output
+ * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
+ * @stat_offset: offsetof() the stat from a base pointer
+ *
+ * This structure defines a statistic to be added to the ethtool stats buffer.
+ * It defines a statistic as offset from a common base pointer. Stats should
+ * be defined in constant arrays using the IDPF_STAT macro, with every element
+ * of the array using the same _type for calculating the sizeof_stat and
+ * stat_offset.
+ *
+ * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
+ * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
+ * the idpf_add_ethtool_stat() helper function.
+ *
+ * The @stat_string is interpreted as a format string, allowing formatted
+ * values to be inserted while looping over multiple structures for a given
+ * statistics array. Thus, every statistic string in an array should have the
+ * same type and number of format specifiers, to be formatted by variadic
+ * arguments to the idpf_add_stat_string() helper function.
+ */
+struct idpf_stats {
+ char stat_string[ETH_GSTRING_LEN];
+ int sizeof_stat;
+ int stat_offset;
+};
+
+/* Helper macro to define an idpf_stat structure with proper size and type.
+ * Use this when defining constant statistics arrays. Note that @_type expects
+ * only a type name and is used multiple times.
+ */
+#define IDPF_STAT(_type, _name, _stat) { \
+ .stat_string = _name, \
+ .sizeof_stat = sizeof_field(_type, _stat), \
+ .stat_offset = offsetof(_type, _stat) \
+}
+
+/* Helper macro for defining some statistics related to queues */
+#define IDPF_QUEUE_STAT(_name, _stat) \
+ IDPF_STAT(struct idpf_queue, _name, _stat)
+
+/* Stats associated with a Tx queue */
+static const struct idpf_stats idpf_gstrings_tx_queue_stats[] = {
+ IDPF_QUEUE_STAT("pkts", q_stats.tx.packets),
+ IDPF_QUEUE_STAT("bytes", q_stats.tx.bytes),
+ IDPF_QUEUE_STAT("lso_pkts", q_stats.tx.lso_pkts),
+};
+
+/* Stats associated with an Rx queue */
+static const struct idpf_stats idpf_gstrings_rx_queue_stats[] = {
+ IDPF_QUEUE_STAT("pkts", q_stats.rx.packets),
+ IDPF_QUEUE_STAT("bytes", q_stats.rx.bytes),
+ IDPF_QUEUE_STAT("rx_gro_hw_pkts", q_stats.rx.rsc_pkts),
+};
+
+#define IDPF_TX_QUEUE_STATS_LEN ARRAY_SIZE(idpf_gstrings_tx_queue_stats)
+#define IDPF_RX_QUEUE_STATS_LEN ARRAY_SIZE(idpf_gstrings_rx_queue_stats)
+
+#define IDPF_PORT_STAT(_name, _stat) \
+ IDPF_STAT(struct idpf_vport, _name, _stat)
+
+static const struct idpf_stats idpf_gstrings_port_stats[] = {
+ IDPF_PORT_STAT("rx-csum_errors", port_stats.rx_hw_csum_err),
+ IDPF_PORT_STAT("rx-hsplit", port_stats.rx_hsplit),
+ IDPF_PORT_STAT("rx-hsplit_hbo", port_stats.rx_hsplit_hbo),
+ IDPF_PORT_STAT("rx-bad_descs", port_stats.rx_bad_descs),
+ IDPF_PORT_STAT("tx-skb_drops", port_stats.tx_drops),
+ IDPF_PORT_STAT("tx-dma_map_errs", port_stats.tx_dma_map_errs),
+ IDPF_PORT_STAT("tx-linearized_pkts", port_stats.tx_linearize),
+ IDPF_PORT_STAT("tx-busy_events", port_stats.tx_busy),
+ IDPF_PORT_STAT("rx-unicast_pkts", port_stats.vport_stats.rx_unicast),
+ IDPF_PORT_STAT("rx-multicast_pkts", port_stats.vport_stats.rx_multicast),
+ IDPF_PORT_STAT("rx-broadcast_pkts", port_stats.vport_stats.rx_broadcast),
+ IDPF_PORT_STAT("rx-unknown_protocol", port_stats.vport_stats.rx_unknown_protocol),
+ IDPF_PORT_STAT("tx-unicast_pkts", port_stats.vport_stats.tx_unicast),
+ IDPF_PORT_STAT("tx-multicast_pkts", port_stats.vport_stats.tx_multicast),
+ IDPF_PORT_STAT("tx-broadcast_pkts", port_stats.vport_stats.tx_broadcast),
+};
+
+#define IDPF_PORT_STATS_LEN ARRAY_SIZE(idpf_gstrings_port_stats)
+
+/**
+ * __idpf_add_qstat_strings - copy stat strings into ethtool buffer
+ * @p: ethtool supplied buffer
+ * @stats: stat definitions array
+ * @size: size of the stats array
+ * @type: stat type
+ * @idx: stat index
+ *
+ * Format and copy the strings described by stats into the buffer pointed at
+ * by p.
+ */
+static void __idpf_add_qstat_strings(u8 **p, const struct idpf_stats *stats,
+ const unsigned int size, const char *type,
+ unsigned int idx)
+{
+ unsigned int i;
+
+ for (i = 0; i < size; i++)
+ ethtool_sprintf(p, "%s_q-%u_%s",
+ type, idx, stats[i].stat_string);
+}
+
+/**
+ * idpf_add_qstat_strings - Copy queue stat strings into ethtool buffer
+ * @p: ethtool supplied buffer
+ * @stats: stat definitions array
+ * @type: stat type
+ * @idx: stat idx
+ *
+ * Format and copy the strings described by the const static stats value into
+ * the buffer pointed at by p.
+ *
+ * The parameter @stats is evaluated twice, so parameters with side effects
+ * should be avoided. Additionally, stats must be an array such that
+ * ARRAY_SIZE can be called on it.
+ */
+#define idpf_add_qstat_strings(p, stats, type, idx) \
+ __idpf_add_qstat_strings(p, stats, ARRAY_SIZE(stats), type, idx)
+
+/**
+ * idpf_add_stat_strings - Copy port stat strings into ethtool buffer
+ * @p: ethtool buffer
+ * @stats: struct to copy from
+ * @size: size of stats array to copy from
+ */
+static void idpf_add_stat_strings(u8 **p, const struct idpf_stats *stats,
+ const unsigned int size)
+{
+ unsigned int i;
+
+ for (i = 0; i < size; i++)
+ ethtool_sprintf(p, "%s", stats[i].stat_string);
+}
+
+/**
+ * idpf_get_stat_strings - Get stat strings
+ * @netdev: network interface device structure
+ * @data: buffer for string data
+ *
+ * Builds the statistics string table
+ */
+static void idpf_get_stat_strings(struct net_device *netdev, u8 *data)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport_config *vport_config;
+ unsigned int i;
+
+ idpf_add_stat_strings(&data, idpf_gstrings_port_stats,
+ IDPF_PORT_STATS_LEN);
+
+ vport_config = np->adapter->vport_config[np->vport_idx];
+ /* It's critical that we always report a constant number of strings and
+ * that the strings are reported in the same order regardless of how
+ * many queues are actually in use.
+ */
+ for (i = 0; i < vport_config->max_q.max_txq; i++)
+ idpf_add_qstat_strings(&data, idpf_gstrings_tx_queue_stats,
+ "tx", i);
+
+ for (i = 0; i < vport_config->max_q.max_rxq; i++)
+ idpf_add_qstat_strings(&data, idpf_gstrings_rx_queue_stats,
+ "rx", i);
+
+ page_pool_ethtool_stats_get_strings(data);
+}
+
+/**
+ * idpf_get_strings - Get string set
+ * @netdev: network interface device structure
+ * @sset: id of string set
+ * @data: buffer for string data
+ *
+ * Builds string tables for various string sets
+ */
+static void idpf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ idpf_get_stat_strings(netdev, data);
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * idpf_get_sset_count - Get length of string set
+ * @netdev: network interface device structure
+ * @sset: id of string set
+ *
+ * Reports size of various string tables.
+ */
+static int idpf_get_sset_count(struct net_device *netdev, int sset)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport_config *vport_config;
+ u16 max_txq, max_rxq;
+ unsigned int size;
+
+ if (sset != ETH_SS_STATS)
+ return -EINVAL;
+
+ vport_config = np->adapter->vport_config[np->vport_idx];
+ /* This size reported back here *must* be constant throughout the
+ * lifecycle of the netdevice, i.e. we must report the maximum length
+ * even for queues that don't technically exist. This is due to the
+ * fact that this userspace API uses three separate ioctl calls to get
+ * stats data but has no way to communicate back to userspace when that
+ * size has changed, which can typically happen as a result of changing
+ * number of queues. If the number/order of stats change in the middle
+ * of this call chain it will lead to userspace crashing/accessing bad
+ * data through buffer under/overflow.
+ */
+ max_txq = vport_config->max_q.max_txq;
+ max_rxq = vport_config->max_q.max_rxq;
+
+ size = IDPF_PORT_STATS_LEN + (IDPF_TX_QUEUE_STATS_LEN * max_txq) +
+ (IDPF_RX_QUEUE_STATS_LEN * max_rxq);
+ size += page_pool_ethtool_stats_get_count();
+
+ return size;
+}
+
+/**
+ * idpf_add_one_ethtool_stat - copy the stat into the supplied buffer
+ * @data: location to store the stat value
+ * @pstat: old stat pointer to copy from
+ * @stat: the stat definition
+ *
+ * Copies the stat data defined by the pointer and stat structure pair into
+ * the memory supplied as data. If the pointer is null, data will be zero'd.
+ */
+static void idpf_add_one_ethtool_stat(u64 *data, void *pstat,
+ const struct idpf_stats *stat)
+{
+ char *p;
+
+ if (!pstat) {
+ /* Ensure that the ethtool data buffer is zero'd for any stats
+ * which don't have a valid pointer.
+ */
+ *data = 0;
+ return;
+ }
+
+ p = (char *)pstat + stat->stat_offset;
+ switch (stat->sizeof_stat) {
+ case sizeof(u64):
+ *data = *((u64 *)p);
+ break;
+ case sizeof(u32):
+ *data = *((u32 *)p);
+ break;
+ case sizeof(u16):
+ *data = *((u16 *)p);
+ break;
+ case sizeof(u8):
+ *data = *((u8 *)p);
+ break;
+ default:
+ WARN_ONCE(1, "unexpected stat size for %s",
+ stat->stat_string);
+ *data = 0;
+ }
+}
+
+/**
+ * idpf_add_queue_stats - copy queue statistics into supplied buffer
+ * @data: ethtool stats buffer
+ * @q: the queue to copy
+ *
+ * Queue statistics must be copied while protected by u64_stats_fetch_begin,
+ * so we can't directly use idpf_add_ethtool_stats. Assumes that queue stats
+ * are defined in idpf_gstrings_queue_stats. If the queue pointer is null,
+ * zero out the queue stat values and update the data pointer. Otherwise
+ * safely copy the stats from the queue into the supplied buffer and update
+ * the data pointer when finished.
+ *
+ * This function expects to be called while under rcu_read_lock().
+ */
+static void idpf_add_queue_stats(u64 **data, struct idpf_queue *q)
+{
+ const struct idpf_stats *stats;
+ unsigned int start;
+ unsigned int size;
+ unsigned int i;
+
+ if (q->q_type == VIRTCHNL2_QUEUE_TYPE_RX) {
+ size = IDPF_RX_QUEUE_STATS_LEN;
+ stats = idpf_gstrings_rx_queue_stats;
+ } else {
+ size = IDPF_TX_QUEUE_STATS_LEN;
+ stats = idpf_gstrings_tx_queue_stats;
+ }
+
+ /* To avoid invalid statistics values, ensure that we keep retrying
+ * the copy until we get a consistent value according to
+ * u64_stats_fetch_retry.
+ */
+ do {
+ start = u64_stats_fetch_begin(&q->stats_sync);
+ for (i = 0; i < size; i++)
+ idpf_add_one_ethtool_stat(&(*data)[i], q, &stats[i]);
+ } while (u64_stats_fetch_retry(&q->stats_sync, start));
+
+ /* Once we successfully copy the stats in, update the data pointer */
+ *data += size;
+}
+
+/**
+ * idpf_add_empty_queue_stats - Add stats for a non-existent queue
+ * @data: pointer to data buffer
+ * @qtype: type of data queue
+ *
+ * We must report a constant length of stats back to userspace regardless of
+ * how many queues are actually in use because stats collection happens over
+ * three separate ioctls and there's no way to notify userspace the size
+ * changed between those calls. This adds empty to data to the stats since we
+ * don't have a real queue to refer to for this stats slot.
+ */
+static void idpf_add_empty_queue_stats(u64 **data, u16 qtype)
+{
+ unsigned int i;
+ int stats_len;
+
+ if (qtype == VIRTCHNL2_QUEUE_TYPE_RX)
+ stats_len = IDPF_RX_QUEUE_STATS_LEN;
+ else
+ stats_len = IDPF_TX_QUEUE_STATS_LEN;
+
+ for (i = 0; i < stats_len; i++)
+ (*data)[i] = 0;
+ *data += stats_len;
+}
+
+/**
+ * idpf_add_port_stats - Copy port stats into ethtool buffer
+ * @vport: virtual port struct
+ * @data: ethtool buffer to copy into
+ */
+static void idpf_add_port_stats(struct idpf_vport *vport, u64 **data)
+{
+ unsigned int size = IDPF_PORT_STATS_LEN;
+ unsigned int start;
+ unsigned int i;
+
+ do {
+ start = u64_stats_fetch_begin(&vport->port_stats.stats_sync);
+ for (i = 0; i < size; i++)
+ idpf_add_one_ethtool_stat(&(*data)[i], vport,
+ &idpf_gstrings_port_stats[i]);
+ } while (u64_stats_fetch_retry(&vport->port_stats.stats_sync, start));
+
+ *data += size;
+}
+
+/**
+ * idpf_collect_queue_stats - accumulate various per queue stats
+ * into port level stats
+ * @vport: pointer to vport struct
+ **/
+static void idpf_collect_queue_stats(struct idpf_vport *vport)
+{
+ struct idpf_port_stats *pstats = &vport->port_stats;
+ int i, j;
+
+ /* zero out port stats since they're actually tracked in per
+ * queue stats; this is only for reporting
+ */
+ u64_stats_update_begin(&pstats->stats_sync);
+ u64_stats_set(&pstats->rx_hw_csum_err, 0);
+ u64_stats_set(&pstats->rx_hsplit, 0);
+ u64_stats_set(&pstats->rx_hsplit_hbo, 0);
+ u64_stats_set(&pstats->rx_bad_descs, 0);
+ u64_stats_set(&pstats->tx_linearize, 0);
+ u64_stats_set(&pstats->tx_busy, 0);
+ u64_stats_set(&pstats->tx_drops, 0);
+ u64_stats_set(&pstats->tx_dma_map_errs, 0);
+ u64_stats_update_end(&pstats->stats_sync);
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rxq_grp = &vport->rxq_grps[i];
+ u16 num_rxq;
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ num_rxq = rxq_grp->splitq.num_rxq_sets;
+ else
+ num_rxq = rxq_grp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq; j++) {
+ u64 hw_csum_err, hsplit, hsplit_hbo, bad_descs;
+ struct idpf_rx_queue_stats *stats;
+ struct idpf_queue *rxq;
+ unsigned int start;
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ rxq = &rxq_grp->splitq.rxq_sets[j]->rxq;
+ else
+ rxq = rxq_grp->singleq.rxqs[j];
+
+ if (!rxq)
+ continue;
+
+ do {
+ start = u64_stats_fetch_begin(&rxq->stats_sync);
+
+ stats = &rxq->q_stats.rx;
+ hw_csum_err = u64_stats_read(&stats->hw_csum_err);
+ hsplit = u64_stats_read(&stats->hsplit_pkts);
+ hsplit_hbo = u64_stats_read(&stats->hsplit_buf_ovf);
+ bad_descs = u64_stats_read(&stats->bad_descs);
+ } while (u64_stats_fetch_retry(&rxq->stats_sync, start));
+
+ u64_stats_update_begin(&pstats->stats_sync);
+ u64_stats_add(&pstats->rx_hw_csum_err, hw_csum_err);
+ u64_stats_add(&pstats->rx_hsplit, hsplit);
+ u64_stats_add(&pstats->rx_hsplit_hbo, hsplit_hbo);
+ u64_stats_add(&pstats->rx_bad_descs, bad_descs);
+ u64_stats_update_end(&pstats->stats_sync);
+ }
+ }
+
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *txq_grp = &vport->txq_grps[i];
+
+ for (j = 0; j < txq_grp->num_txq; j++) {
+ u64 linearize, qbusy, skb_drops, dma_map_errs;
+ struct idpf_queue *txq = txq_grp->txqs[j];
+ struct idpf_tx_queue_stats *stats;
+ unsigned int start;
+
+ if (!txq)
+ continue;
+
+ do {
+ start = u64_stats_fetch_begin(&txq->stats_sync);
+
+ stats = &txq->q_stats.tx;
+ linearize = u64_stats_read(&stats->linearize);
+ qbusy = u64_stats_read(&stats->q_busy);
+ skb_drops = u64_stats_read(&stats->skb_drops);
+ dma_map_errs = u64_stats_read(&stats->dma_map_errs);
+ } while (u64_stats_fetch_retry(&txq->stats_sync, start));
+
+ u64_stats_update_begin(&pstats->stats_sync);
+ u64_stats_add(&pstats->tx_linearize, linearize);
+ u64_stats_add(&pstats->tx_busy, qbusy);
+ u64_stats_add(&pstats->tx_drops, skb_drops);
+ u64_stats_add(&pstats->tx_dma_map_errs, dma_map_errs);
+ u64_stats_update_end(&pstats->stats_sync);
+ }
+ }
+}
+
+/**
+ * idpf_get_ethtool_stats - report device statistics
+ * @netdev: network interface device structure
+ * @stats: ethtool statistics structure
+ * @data: pointer to data buffer
+ *
+ * All statistics are added to the data buffer as an array of u64.
+ */
+static void idpf_get_ethtool_stats(struct net_device *netdev,
+ struct ethtool_stats __always_unused *stats,
+ u64 *data)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport_config *vport_config;
+ struct page_pool_stats pp_stats = { };
+ struct idpf_vport *vport;
+ unsigned int total = 0;
+ unsigned int i, j;
+ bool is_splitq;
+ u16 qtype;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ if (np->state != __IDPF_VPORT_UP) {
+ idpf_vport_ctrl_unlock(netdev);
+
+ return;
+ }
+
+ rcu_read_lock();
+
+ idpf_collect_queue_stats(vport);
+ idpf_add_port_stats(vport, &data);
+
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *txq_grp = &vport->txq_grps[i];
+
+ qtype = VIRTCHNL2_QUEUE_TYPE_TX;
+
+ for (j = 0; j < txq_grp->num_txq; j++, total++) {
+ struct idpf_queue *txq = txq_grp->txqs[j];
+
+ if (!txq)
+ idpf_add_empty_queue_stats(&data, qtype);
+ else
+ idpf_add_queue_stats(&data, txq);
+ }
+ }
+
+ vport_config = vport->adapter->vport_config[vport->idx];
+ /* It is critical we provide a constant number of stats back to
+ * userspace regardless of how many queues are actually in use because
+ * there is no way to inform userspace the size has changed between
+ * ioctl calls. This will fill in any missing stats with zero.
+ */
+ for (; total < vport_config->max_q.max_txq; total++)
+ idpf_add_empty_queue_stats(&data, VIRTCHNL2_QUEUE_TYPE_TX);
+ total = 0;
+
+ is_splitq = idpf_is_queue_model_split(vport->rxq_model);
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rxq_grp = &vport->rxq_grps[i];
+ u16 num_rxq;
+
+ qtype = VIRTCHNL2_QUEUE_TYPE_RX;
+
+ if (is_splitq)
+ num_rxq = rxq_grp->splitq.num_rxq_sets;
+ else
+ num_rxq = rxq_grp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq; j++, total++) {
+ struct idpf_queue *rxq;
+
+ if (is_splitq)
+ rxq = &rxq_grp->splitq.rxq_sets[j]->rxq;
+ else
+ rxq = rxq_grp->singleq.rxqs[j];
+ if (!rxq)
+ idpf_add_empty_queue_stats(&data, qtype);
+ else
+ idpf_add_queue_stats(&data, rxq);
+
+ /* In splitq mode, don't get page pool stats here since
+ * the pools are attached to the buffer queues
+ */
+ if (is_splitq)
+ continue;
+
+ if (rxq)
+ page_pool_get_stats(rxq->pp, &pp_stats);
+ }
+ }
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ for (j = 0; j < vport->num_bufqs_per_qgrp; j++) {
+ struct idpf_queue *rxbufq =
+ &vport->rxq_grps[i].splitq.bufq_sets[j].bufq;
+
+ page_pool_get_stats(rxbufq->pp, &pp_stats);
+ }
+ }
+
+ for (; total < vport_config->max_q.max_rxq; total++)
+ idpf_add_empty_queue_stats(&data, VIRTCHNL2_QUEUE_TYPE_RX);
+
+ page_pool_ethtool_stats_get(data, &pp_stats);
+
+ rcu_read_unlock();
+
+ idpf_vport_ctrl_unlock(netdev);
+}
+
+/**
+ * idpf_find_rxq - find rxq from q index
+ * @vport: virtual port associated to queue
+ * @q_num: q index used to find queue
+ *
+ * returns pointer to rx queue
+ */
+static struct idpf_queue *idpf_find_rxq(struct idpf_vport *vport, int q_num)
+{
+ int q_grp, q_idx;
+
+ if (!idpf_is_queue_model_split(vport->rxq_model))
+ return vport->rxq_grps->singleq.rxqs[q_num];
+
+ q_grp = q_num / IDPF_DFLT_SPLITQ_RXQ_PER_GROUP;
+ q_idx = q_num % IDPF_DFLT_SPLITQ_RXQ_PER_GROUP;
+
+ return &vport->rxq_grps[q_grp].splitq.rxq_sets[q_idx]->rxq;
+}
+
+/**
+ * idpf_find_txq - find txq from q index
+ * @vport: virtual port associated to queue
+ * @q_num: q index used to find queue
+ *
+ * returns pointer to tx queue
+ */
+static struct idpf_queue *idpf_find_txq(struct idpf_vport *vport, int q_num)
+{
+ int q_grp;
+
+ if (!idpf_is_queue_model_split(vport->txq_model))
+ return vport->txqs[q_num];
+
+ q_grp = q_num / IDPF_DFLT_SPLITQ_TXQ_PER_GROUP;
+
+ return vport->txq_grps[q_grp].complq;
+}
+
+/**
+ * __idpf_get_q_coalesce - get ITR values for specific queue
+ * @ec: ethtool structure to fill with driver's coalesce settings
+ * @q: quuee of Rx or Tx
+ */
+static void __idpf_get_q_coalesce(struct ethtool_coalesce *ec,
+ struct idpf_queue *q)
+{
+ if (q->q_type == VIRTCHNL2_QUEUE_TYPE_RX) {
+ ec->use_adaptive_rx_coalesce =
+ IDPF_ITR_IS_DYNAMIC(q->q_vector->rx_intr_mode);
+ ec->rx_coalesce_usecs = q->q_vector->rx_itr_value;
+ } else {
+ ec->use_adaptive_tx_coalesce =
+ IDPF_ITR_IS_DYNAMIC(q->q_vector->tx_intr_mode);
+ ec->tx_coalesce_usecs = q->q_vector->tx_itr_value;
+ }
+}
+
+/**
+ * idpf_get_q_coalesce - get ITR values for specific queue
+ * @netdev: pointer to the netdev associated with this query
+ * @ec: coalesce settings to program the device with
+ * @q_num: update ITR/INTRL (coalesce) settings for this queue number/index
+ *
+ * Return 0 on success, and negative on failure
+ */
+static int idpf_get_q_coalesce(struct net_device *netdev,
+ struct ethtool_coalesce *ec,
+ u32 q_num)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport *vport;
+ int err = 0;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ if (np->state != __IDPF_VPORT_UP)
+ goto unlock_mutex;
+
+ if (q_num >= vport->num_rxq && q_num >= vport->num_txq) {
+ err = -EINVAL;
+ goto unlock_mutex;
+ }
+
+ if (q_num < vport->num_rxq)
+ __idpf_get_q_coalesce(ec, idpf_find_rxq(vport, q_num));
+
+ if (q_num < vport->num_txq)
+ __idpf_get_q_coalesce(ec, idpf_find_txq(vport, q_num));
+
+unlock_mutex:
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * idpf_get_coalesce - get ITR values as requested by user
+ * @netdev: pointer to the netdev associated with this query
+ * @ec: coalesce settings to be filled
+ * @kec: unused
+ * @extack: unused
+ *
+ * Return 0 on success, and negative on failure
+ */
+static int idpf_get_coalesce(struct net_device *netdev,
+ struct ethtool_coalesce *ec,
+ struct kernel_ethtool_coalesce *kec,
+ struct netlink_ext_ack *extack)
+{
+ /* Return coalesce based on queue number zero */
+ return idpf_get_q_coalesce(netdev, ec, 0);
+}
+
+/**
+ * idpf_get_per_q_coalesce - get ITR values as requested by user
+ * @netdev: pointer to the netdev associated with this query
+ * @q_num: queue for which the itr values has to retrieved
+ * @ec: coalesce settings to be filled
+ *
+ * Return 0 on success, and negative on failure
+ */
+
+static int idpf_get_per_q_coalesce(struct net_device *netdev, u32 q_num,
+ struct ethtool_coalesce *ec)
+{
+ return idpf_get_q_coalesce(netdev, ec, q_num);
+}
+
+/**
+ * __idpf_set_q_coalesce - set ITR values for specific queue
+ * @ec: ethtool structure from user to update ITR settings
+ * @q: queue for which itr values has to be set
+ * @is_rxq: is queue type rx
+ *
+ * Returns 0 on success, negative otherwise.
+ */
+static int __idpf_set_q_coalesce(struct ethtool_coalesce *ec,
+ struct idpf_queue *q, bool is_rxq)
+{
+ u32 use_adaptive_coalesce, coalesce_usecs;
+ struct idpf_q_vector *qv = q->q_vector;
+ bool is_dim_ena = false;
+ u16 itr_val;
+
+ if (is_rxq) {
+ is_dim_ena = IDPF_ITR_IS_DYNAMIC(qv->rx_intr_mode);
+ use_adaptive_coalesce = ec->use_adaptive_rx_coalesce;
+ coalesce_usecs = ec->rx_coalesce_usecs;
+ itr_val = qv->rx_itr_value;
+ } else {
+ is_dim_ena = IDPF_ITR_IS_DYNAMIC(qv->tx_intr_mode);
+ use_adaptive_coalesce = ec->use_adaptive_tx_coalesce;
+ coalesce_usecs = ec->tx_coalesce_usecs;
+ itr_val = qv->tx_itr_value;
+ }
+ if (coalesce_usecs != itr_val && use_adaptive_coalesce) {
+ netdev_err(q->vport->netdev, "Cannot set coalesce usecs if adaptive enabled\n");
+
+ return -EINVAL;
+ }
+
+ if (is_dim_ena && use_adaptive_coalesce)
+ return 0;
+
+ if (coalesce_usecs > IDPF_ITR_MAX) {
+ netdev_err(q->vport->netdev,
+ "Invalid value, %d-usecs range is 0-%d\n",
+ coalesce_usecs, IDPF_ITR_MAX);
+
+ return -EINVAL;
+ }
+
+ if (coalesce_usecs % 2) {
+ coalesce_usecs--;
+ netdev_info(q->vport->netdev,
+ "HW only supports even ITR values, ITR rounded to %d\n",
+ coalesce_usecs);
+ }
+
+ if (is_rxq) {
+ qv->rx_itr_value = coalesce_usecs;
+ if (use_adaptive_coalesce) {
+ qv->rx_intr_mode = IDPF_ITR_DYNAMIC;
+ } else {
+ qv->rx_intr_mode = !IDPF_ITR_DYNAMIC;
+ idpf_vport_intr_write_itr(qv, qv->rx_itr_value,
+ false);
+ }
+ } else {
+ qv->tx_itr_value = coalesce_usecs;
+ if (use_adaptive_coalesce) {
+ qv->tx_intr_mode = IDPF_ITR_DYNAMIC;
+ } else {
+ qv->tx_intr_mode = !IDPF_ITR_DYNAMIC;
+ idpf_vport_intr_write_itr(qv, qv->tx_itr_value, true);
+ }
+ }
+
+ /* Update of static/dynamic itr will be taken care when interrupt is
+ * fired
+ */
+ return 0;
+}
+
+/**
+ * idpf_set_q_coalesce - set ITR values for specific queue
+ * @vport: vport associated to the queue that need updating
+ * @ec: coalesce settings to program the device with
+ * @q_num: update ITR/INTRL (coalesce) settings for this queue number/index
+ * @is_rxq: is queue type rx
+ *
+ * Return 0 on success, and negative on failure
+ */
+static int idpf_set_q_coalesce(struct idpf_vport *vport,
+ struct ethtool_coalesce *ec,
+ int q_num, bool is_rxq)
+{
+ struct idpf_queue *q;
+
+ q = is_rxq ? idpf_find_rxq(vport, q_num) : idpf_find_txq(vport, q_num);
+
+ if (q && __idpf_set_q_coalesce(ec, q, is_rxq))
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * idpf_set_coalesce - set ITR values as requested by user
+ * @netdev: pointer to the netdev associated with this query
+ * @ec: coalesce settings to program the device with
+ * @kec: unused
+ * @extack: unused
+ *
+ * Return 0 on success, and negative on failure
+ */
+static int idpf_set_coalesce(struct net_device *netdev,
+ struct ethtool_coalesce *ec,
+ struct kernel_ethtool_coalesce *kec,
+ struct netlink_ext_ack *extack)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport *vport;
+ int i, err = 0;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ if (np->state != __IDPF_VPORT_UP)
+ goto unlock_mutex;
+
+ for (i = 0; i < vport->num_txq; i++) {
+ err = idpf_set_q_coalesce(vport, ec, i, false);
+ if (err)
+ goto unlock_mutex;
+ }
+
+ for (i = 0; i < vport->num_rxq; i++) {
+ err = idpf_set_q_coalesce(vport, ec, i, true);
+ if (err)
+ goto unlock_mutex;
+ }
+
+unlock_mutex:
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * idpf_set_per_q_coalesce - set ITR values as requested by user
+ * @netdev: pointer to the netdev associated with this query
+ * @q_num: queue for which the itr values has to be set
+ * @ec: coalesce settings to program the device with
+ *
+ * Return 0 on success, and negative on failure
+ */
+static int idpf_set_per_q_coalesce(struct net_device *netdev, u32 q_num,
+ struct ethtool_coalesce *ec)
+{
+ struct idpf_vport *vport;
+ int err;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ err = idpf_set_q_coalesce(vport, ec, q_num, false);
+ if (err) {
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+ }
+
+ err = idpf_set_q_coalesce(vport, ec, q_num, true);
+
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * idpf_get_msglevel - Get debug message level
+ * @netdev: network interface device structure
+ *
+ * Returns current debug message level.
+ */
+static u32 idpf_get_msglevel(struct net_device *netdev)
+{
+ struct idpf_adapter *adapter = idpf_netdev_to_adapter(netdev);
+
+ return adapter->msg_enable;
+}
+
+/**
+ * idpf_set_msglevel - Set debug message level
+ * @netdev: network interface device structure
+ * @data: message level
+ *
+ * Set current debug message level. Higher values cause the driver to
+ * be noisier.
+ */
+static void idpf_set_msglevel(struct net_device *netdev, u32 data)
+{
+ struct idpf_adapter *adapter = idpf_netdev_to_adapter(netdev);
+
+ adapter->msg_enable = data;
+}
+
+/**
+ * idpf_get_link_ksettings - Get Link Speed and Duplex settings
+ * @netdev: network interface device structure
+ * @cmd: ethtool command
+ *
+ * Reports speed/duplex settings.
+ **/
+static int idpf_get_link_ksettings(struct net_device *netdev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct idpf_vport *vport;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ ethtool_link_ksettings_zero_link_mode(cmd, supported);
+ cmd->base.autoneg = AUTONEG_DISABLE;
+ cmd->base.port = PORT_NONE;
+ if (vport->link_up) {
+ cmd->base.duplex = DUPLEX_FULL;
+ cmd->base.speed = vport->link_speed_mbps;
+ } else {
+ cmd->base.duplex = DUPLEX_UNKNOWN;
+ cmd->base.speed = SPEED_UNKNOWN;
+ }
+
+ idpf_vport_ctrl_unlock(netdev);
+
+ return 0;
+}
+
+static const struct ethtool_ops idpf_ethtool_ops = {
+ .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
+ ETHTOOL_COALESCE_USE_ADAPTIVE,
+ .get_msglevel = idpf_get_msglevel,
+ .set_msglevel = idpf_set_msglevel,
+ .get_link = ethtool_op_get_link,
+ .get_coalesce = idpf_get_coalesce,
+ .set_coalesce = idpf_set_coalesce,
+ .get_per_queue_coalesce = idpf_get_per_q_coalesce,
+ .set_per_queue_coalesce = idpf_set_per_q_coalesce,
+ .get_ethtool_stats = idpf_get_ethtool_stats,
+ .get_strings = idpf_get_strings,
+ .get_sset_count = idpf_get_sset_count,
+ .get_channels = idpf_get_channels,
+ .get_rxnfc = idpf_get_rxnfc,
+ .get_rxfh_key_size = idpf_get_rxfh_key_size,
+ .get_rxfh_indir_size = idpf_get_rxfh_indir_size,
+ .get_rxfh = idpf_get_rxfh,
+ .set_rxfh = idpf_set_rxfh,
+ .set_channels = idpf_set_channels,
+ .get_ringparam = idpf_get_ringparam,
+ .set_ringparam = idpf_set_ringparam,
+ .get_link_ksettings = idpf_get_link_ksettings,
+};
+
+/**
+ * idpf_set_ethtool_ops - Initialize ethtool ops struct
+ * @netdev: network interface device structure
+ *
+ * Sets ethtool ops struct in our netdev so that ethtool can call
+ * our functions.
+ */
+void idpf_set_ethtool_ops(struct net_device *netdev)
+{
+ netdev->ethtool_ops = &idpf_ethtool_ops;
+}
diff --git a/drivers/net/ethernet/intel/idpf/idpf_lan_pf_regs.h b/drivers/net/ethernet/intel/idpf/idpf_lan_pf_regs.h
new file mode 100644
index 0000000..24edb8a
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_lan_pf_regs.h
@@ -0,0 +1,124 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_LAN_PF_REGS_H_
+#define _IDPF_LAN_PF_REGS_H_
+
+/* Receive queues */
+#define PF_QRX_BASE 0x00000000
+#define PF_QRX_TAIL(_QRX) (PF_QRX_BASE + (((_QRX) * 0x1000)))
+#define PF_QRX_BUFFQ_BASE 0x03000000
+#define PF_QRX_BUFFQ_TAIL(_QRX) (PF_QRX_BUFFQ_BASE + (((_QRX) * 0x1000)))
+
+/* Transmit queues */
+#define PF_QTX_BASE 0x05000000
+#define PF_QTX_COMM_DBELL(_DBQM) (PF_QTX_BASE + ((_DBQM) * 0x1000))
+
+/* Control(PF Mailbox) Queue */
+#define PF_FW_BASE 0x08400000
+
+#define PF_FW_ARQBAL (PF_FW_BASE)
+#define PF_FW_ARQBAH (PF_FW_BASE + 0x4)
+#define PF_FW_ARQLEN (PF_FW_BASE + 0x8)
+#define PF_FW_ARQLEN_ARQLEN_S 0
+#define PF_FW_ARQLEN_ARQLEN_M GENMASK(12, 0)
+#define PF_FW_ARQLEN_ARQVFE_S 28
+#define PF_FW_ARQLEN_ARQVFE_M BIT(PF_FW_ARQLEN_ARQVFE_S)
+#define PF_FW_ARQLEN_ARQOVFL_S 29
+#define PF_FW_ARQLEN_ARQOVFL_M BIT(PF_FW_ARQLEN_ARQOVFL_S)
+#define PF_FW_ARQLEN_ARQCRIT_S 30
+#define PF_FW_ARQLEN_ARQCRIT_M BIT(PF_FW_ARQLEN_ARQCRIT_S)
+#define PF_FW_ARQLEN_ARQENABLE_S 31
+#define PF_FW_ARQLEN_ARQENABLE_M BIT(PF_FW_ARQLEN_ARQENABLE_S)
+#define PF_FW_ARQH (PF_FW_BASE + 0xC)
+#define PF_FW_ARQH_ARQH_S 0
+#define PF_FW_ARQH_ARQH_M GENMASK(12, 0)
+#define PF_FW_ARQT (PF_FW_BASE + 0x10)
+
+#define PF_FW_ATQBAL (PF_FW_BASE + 0x14)
+#define PF_FW_ATQBAH (PF_FW_BASE + 0x18)
+#define PF_FW_ATQLEN (PF_FW_BASE + 0x1C)
+#define PF_FW_ATQLEN_ATQLEN_S 0
+#define PF_FW_ATQLEN_ATQLEN_M GENMASK(9, 0)
+#define PF_FW_ATQLEN_ATQVFE_S 28
+#define PF_FW_ATQLEN_ATQVFE_M BIT(PF_FW_ATQLEN_ATQVFE_S)
+#define PF_FW_ATQLEN_ATQOVFL_S 29
+#define PF_FW_ATQLEN_ATQOVFL_M BIT(PF_FW_ATQLEN_ATQOVFL_S)
+#define PF_FW_ATQLEN_ATQCRIT_S 30
+#define PF_FW_ATQLEN_ATQCRIT_M BIT(PF_FW_ATQLEN_ATQCRIT_S)
+#define PF_FW_ATQLEN_ATQENABLE_S 31
+#define PF_FW_ATQLEN_ATQENABLE_M BIT(PF_FW_ATQLEN_ATQENABLE_S)
+#define PF_FW_ATQH (PF_FW_BASE + 0x20)
+#define PF_FW_ATQH_ATQH_S 0
+#define PF_FW_ATQH_ATQH_M GENMASK(9, 0)
+#define PF_FW_ATQT (PF_FW_BASE + 0x24)
+
+/* Interrupts */
+#define PF_GLINT_BASE 0x08900000
+#define PF_GLINT_DYN_CTL(_INT) (PF_GLINT_BASE + ((_INT) * 0x1000))
+#define PF_GLINT_DYN_CTL_INTENA_S 0
+#define PF_GLINT_DYN_CTL_INTENA_M BIT(PF_GLINT_DYN_CTL_INTENA_S)
+#define PF_GLINT_DYN_CTL_CLEARPBA_S 1
+#define PF_GLINT_DYN_CTL_CLEARPBA_M BIT(PF_GLINT_DYN_CTL_CLEARPBA_S)
+#define PF_GLINT_DYN_CTL_SWINT_TRIG_S 2
+#define PF_GLINT_DYN_CTL_SWINT_TRIG_M BIT(PF_GLINT_DYN_CTL_SWINT_TRIG_S)
+#define PF_GLINT_DYN_CTL_ITR_INDX_S 3
+#define PF_GLINT_DYN_CTL_ITR_INDX_M GENMASK(4, 3)
+#define PF_GLINT_DYN_CTL_INTERVAL_S 5
+#define PF_GLINT_DYN_CTL_INTERVAL_M BIT(PF_GLINT_DYN_CTL_INTERVAL_S)
+#define PF_GLINT_DYN_CTL_SW_ITR_INDX_ENA_S 24
+#define PF_GLINT_DYN_CTL_SW_ITR_INDX_ENA_M BIT(PF_GLINT_DYN_CTL_SW_ITR_INDX_ENA_S)
+#define PF_GLINT_DYN_CTL_SW_ITR_INDX_S 25
+#define PF_GLINT_DYN_CTL_SW_ITR_INDX_M BIT(PF_GLINT_DYN_CTL_SW_ITR_INDX_S)
+#define PF_GLINT_DYN_CTL_WB_ON_ITR_S 30
+#define PF_GLINT_DYN_CTL_WB_ON_ITR_M BIT(PF_GLINT_DYN_CTL_WB_ON_ITR_S)
+#define PF_GLINT_DYN_CTL_INTENA_MSK_S 31
+#define PF_GLINT_DYN_CTL_INTENA_MSK_M BIT(PF_GLINT_DYN_CTL_INTENA_MSK_S)
+/* _ITR is ITR index, _INT is interrupt index, _itrn_indx_spacing is
+ * spacing b/w itrn registers of the same vector.
+ */
+#define PF_GLINT_ITR_ADDR(_ITR, _reg_start, _itrn_indx_spacing) \
+ ((_reg_start) + ((_ITR) * (_itrn_indx_spacing)))
+/* For PF, itrn_indx_spacing is 4 and itrn_reg_spacing is 0x1000 */
+#define PF_GLINT_ITR(_ITR, _INT) \
+ (PF_GLINT_BASE + (((_ITR) + 1) * 4) + ((_INT) * 0x1000))
+#define PF_GLINT_ITR_MAX_INDEX 2
+#define PF_GLINT_ITR_INTERVAL_S 0
+#define PF_GLINT_ITR_INTERVAL_M GENMASK(11, 0)
+
+/* Generic registers */
+#define PF_INT_DIR_OICR_ENA 0x08406000
+#define PF_INT_DIR_OICR_ENA_S 0
+#define PF_INT_DIR_OICR_ENA_M GENMASK(31, 0)
+#define PF_INT_DIR_OICR 0x08406004
+#define PF_INT_DIR_OICR_TSYN_EVNT 0
+#define PF_INT_DIR_OICR_PHY_TS_0 BIT(1)
+#define PF_INT_DIR_OICR_PHY_TS_1 BIT(2)
+#define PF_INT_DIR_OICR_CAUSE 0x08406008
+#define PF_INT_DIR_OICR_CAUSE_CAUSE_S 0
+#define PF_INT_DIR_OICR_CAUSE_CAUSE_M GENMASK(31, 0)
+#define PF_INT_PBA_CLEAR 0x0840600C
+
+#define PF_FUNC_RID 0x08406010
+#define PF_FUNC_RID_FUNCTION_NUMBER_S 0
+#define PF_FUNC_RID_FUNCTION_NUMBER_M GENMASK(2, 0)
+#define PF_FUNC_RID_DEVICE_NUMBER_S 3
+#define PF_FUNC_RID_DEVICE_NUMBER_M GENMASK(7, 3)
+#define PF_FUNC_RID_BUS_NUMBER_S 8
+#define PF_FUNC_RID_BUS_NUMBER_M GENMASK(15, 8)
+
+/* Reset registers */
+#define PFGEN_RTRIG 0x08407000
+#define PFGEN_RTRIG_CORER_S 0
+#define PFGEN_RTRIG_CORER_M BIT(0)
+#define PFGEN_RTRIG_LINKR_S 1
+#define PFGEN_RTRIG_LINKR_M BIT(1)
+#define PFGEN_RTRIG_IMCR_S 2
+#define PFGEN_RTRIG_IMCR_M BIT(2)
+#define PFGEN_RSTAT 0x08407008 /* PFR Status */
+#define PFGEN_RSTAT_PFR_STATE_S 0
+#define PFGEN_RSTAT_PFR_STATE_M GENMASK(1, 0)
+#define PFGEN_CTRL 0x0840700C
+#define PFGEN_CTRL_PFSWR BIT(0)
+
+#endif
diff --git a/drivers/net/ethernet/intel/idpf/idpf_lan_txrx.h b/drivers/net/ethernet/intel/idpf/idpf_lan_txrx.h
new file mode 100644
index 0000000..a5752dc
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_lan_txrx.h
@@ -0,0 +1,293 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_LAN_TXRX_H_
+#define _IDPF_LAN_TXRX_H_
+
+enum idpf_rss_hash {
+ IDPF_HASH_INVALID = 0,
+ /* Values 1 - 28 are reserved for future use */
+ IDPF_HASH_NONF_UNICAST_IPV4_UDP = 29,
+ IDPF_HASH_NONF_MULTICAST_IPV4_UDP,
+ IDPF_HASH_NONF_IPV4_UDP,
+ IDPF_HASH_NONF_IPV4_TCP_SYN_NO_ACK,
+ IDPF_HASH_NONF_IPV4_TCP,
+ IDPF_HASH_NONF_IPV4_SCTP,
+ IDPF_HASH_NONF_IPV4_OTHER,
+ IDPF_HASH_FRAG_IPV4,
+ /* Values 37-38 are reserved */
+ IDPF_HASH_NONF_UNICAST_IPV6_UDP = 39,
+ IDPF_HASH_NONF_MULTICAST_IPV6_UDP,
+ IDPF_HASH_NONF_IPV6_UDP,
+ IDPF_HASH_NONF_IPV6_TCP_SYN_NO_ACK,
+ IDPF_HASH_NONF_IPV6_TCP,
+ IDPF_HASH_NONF_IPV6_SCTP,
+ IDPF_HASH_NONF_IPV6_OTHER,
+ IDPF_HASH_FRAG_IPV6,
+ IDPF_HASH_NONF_RSVD47,
+ IDPF_HASH_NONF_FCOE_OX,
+ IDPF_HASH_NONF_FCOE_RX,
+ IDPF_HASH_NONF_FCOE_OTHER,
+ /* Values 51-62 are reserved */
+ IDPF_HASH_L2_PAYLOAD = 63,
+
+ IDPF_HASH_MAX
+};
+
+/* Supported RSS offloads */
+#define IDPF_DEFAULT_RSS_HASH \
+ (BIT_ULL(IDPF_HASH_NONF_IPV4_UDP) | \
+ BIT_ULL(IDPF_HASH_NONF_IPV4_SCTP) | \
+ BIT_ULL(IDPF_HASH_NONF_IPV4_TCP) | \
+ BIT_ULL(IDPF_HASH_NONF_IPV4_OTHER) | \
+ BIT_ULL(IDPF_HASH_FRAG_IPV4) | \
+ BIT_ULL(IDPF_HASH_NONF_IPV6_UDP) | \
+ BIT_ULL(IDPF_HASH_NONF_IPV6_TCP) | \
+ BIT_ULL(IDPF_HASH_NONF_IPV6_SCTP) | \
+ BIT_ULL(IDPF_HASH_NONF_IPV6_OTHER) | \
+ BIT_ULL(IDPF_HASH_FRAG_IPV6) | \
+ BIT_ULL(IDPF_HASH_L2_PAYLOAD))
+
+#define IDPF_DEFAULT_RSS_HASH_EXPANDED (IDPF_DEFAULT_RSS_HASH | \
+ BIT_ULL(IDPF_HASH_NONF_IPV4_TCP_SYN_NO_ACK) | \
+ BIT_ULL(IDPF_HASH_NONF_UNICAST_IPV4_UDP) | \
+ BIT_ULL(IDPF_HASH_NONF_MULTICAST_IPV4_UDP) | \
+ BIT_ULL(IDPF_HASH_NONF_IPV6_TCP_SYN_NO_ACK) | \
+ BIT_ULL(IDPF_HASH_NONF_UNICAST_IPV6_UDP) | \
+ BIT_ULL(IDPF_HASH_NONF_MULTICAST_IPV6_UDP))
+
+/* For idpf_splitq_base_tx_compl_desc */
+#define IDPF_TXD_COMPLQ_GEN_S 15
+#define IDPF_TXD_COMPLQ_GEN_M BIT_ULL(IDPF_TXD_COMPLQ_GEN_S)
+#define IDPF_TXD_COMPLQ_COMPL_TYPE_S 11
+#define IDPF_TXD_COMPLQ_COMPL_TYPE_M GENMASK_ULL(13, 11)
+#define IDPF_TXD_COMPLQ_QID_S 0
+#define IDPF_TXD_COMPLQ_QID_M GENMASK_ULL(9, 0)
+
+/* For base mode TX descriptors */
+
+#define IDPF_TXD_CTX_QW0_TUNN_L4T_CS_S 23
+#define IDPF_TXD_CTX_QW0_TUNN_L4T_CS_M BIT_ULL(IDPF_TXD_CTX_QW0_TUNN_L4T_CS_S)
+#define IDPF_TXD_CTX_QW0_TUNN_DECTTL_S 19
+#define IDPF_TXD_CTX_QW0_TUNN_DECTTL_M \
+ (0xFULL << IDPF_TXD_CTX_QW0_TUNN_DECTTL_S)
+#define IDPF_TXD_CTX_QW0_TUNN_NATLEN_S 12
+#define IDPF_TXD_CTX_QW0_TUNN_NATLEN_M \
+ (0X7FULL << IDPF_TXD_CTX_QW0_TUNN_NATLEN_S)
+#define IDPF_TXD_CTX_QW0_TUNN_EIP_NOINC_S 11
+#define IDPF_TXD_CTX_QW0_TUNN_EIP_NOINC_M \
+ BIT_ULL(IDPF_TXD_CTX_QW0_TUNN_EIP_NOINC_S)
+#define IDPF_TXD_CTX_EIP_NOINC_IPID_CONST \
+ IDPF_TXD_CTX_QW0_TUNN_EIP_NOINC_M
+#define IDPF_TXD_CTX_QW0_TUNN_NATT_S 9
+#define IDPF_TXD_CTX_QW0_TUNN_NATT_M (0x3ULL << IDPF_TXD_CTX_QW0_TUNN_NATT_S)
+#define IDPF_TXD_CTX_UDP_TUNNELING BIT_ULL(IDPF_TXD_CTX_QW0_TUNN_NATT_S)
+#define IDPF_TXD_CTX_GRE_TUNNELING (0x2ULL << IDPF_TXD_CTX_QW0_TUNN_NATT_S)
+#define IDPF_TXD_CTX_QW0_TUNN_EXT_IPLEN_S 2
+#define IDPF_TXD_CTX_QW0_TUNN_EXT_IPLEN_M \
+ (0x3FULL << IDPF_TXD_CTX_QW0_TUNN_EXT_IPLEN_S)
+#define IDPF_TXD_CTX_QW0_TUNN_EXT_IP_S 0
+#define IDPF_TXD_CTX_QW0_TUNN_EXT_IP_M \
+ (0x3ULL << IDPF_TXD_CTX_QW0_TUNN_EXT_IP_S)
+
+#define IDPF_TXD_CTX_QW1_MSS_S 50
+#define IDPF_TXD_CTX_QW1_MSS_M GENMASK_ULL(63, 50)
+#define IDPF_TXD_CTX_QW1_TSO_LEN_S 30
+#define IDPF_TXD_CTX_QW1_TSO_LEN_M GENMASK_ULL(47, 30)
+#define IDPF_TXD_CTX_QW1_CMD_S 4
+#define IDPF_TXD_CTX_QW1_CMD_M GENMASK_ULL(15, 4)
+#define IDPF_TXD_CTX_QW1_DTYPE_S 0
+#define IDPF_TXD_CTX_QW1_DTYPE_M GENMASK_ULL(3, 0)
+#define IDPF_TXD_QW1_L2TAG1_S 48
+#define IDPF_TXD_QW1_L2TAG1_M GENMASK_ULL(63, 48)
+#define IDPF_TXD_QW1_TX_BUF_SZ_S 34
+#define IDPF_TXD_QW1_TX_BUF_SZ_M GENMASK_ULL(47, 34)
+#define IDPF_TXD_QW1_OFFSET_S 16
+#define IDPF_TXD_QW1_OFFSET_M GENMASK_ULL(33, 16)
+#define IDPF_TXD_QW1_CMD_S 4
+#define IDPF_TXD_QW1_CMD_M GENMASK_ULL(15, 4)
+#define IDPF_TXD_QW1_DTYPE_S 0
+#define IDPF_TXD_QW1_DTYPE_M GENMASK_ULL(3, 0)
+
+/* TX Completion Descriptor Completion Types */
+#define IDPF_TXD_COMPLT_ITR_FLUSH 0
+/* Descriptor completion type 1 is reserved */
+#define IDPF_TXD_COMPLT_RS 2
+/* Descriptor completion type 3 is reserved */
+#define IDPF_TXD_COMPLT_RE 4
+#define IDPF_TXD_COMPLT_SW_MARKER 5
+
+enum idpf_tx_desc_dtype_value {
+ IDPF_TX_DESC_DTYPE_DATA = 0,
+ IDPF_TX_DESC_DTYPE_CTX = 1,
+ /* DTYPE 2 is reserved
+ * DTYPE 3 is free for future use
+ * DTYPE 4 is reserved
+ */
+ IDPF_TX_DESC_DTYPE_FLEX_TSO_CTX = 5,
+ /* DTYPE 6 is reserved */
+ IDPF_TX_DESC_DTYPE_FLEX_L2TAG1_L2TAG2 = 7,
+ /* DTYPE 8, 9 are free for future use
+ * DTYPE 10 is reserved
+ * DTYPE 11 is free for future use
+ */
+ IDPF_TX_DESC_DTYPE_FLEX_FLOW_SCHE = 12,
+ /* DTYPE 13, 14 are free for future use */
+
+ /* DESC_DONE - HW has completed write-back of descriptor */
+ IDPF_TX_DESC_DTYPE_DESC_DONE = 15,
+};
+
+enum idpf_tx_ctx_desc_cmd_bits {
+ IDPF_TX_CTX_DESC_TSO = 0x01,
+ IDPF_TX_CTX_DESC_TSYN = 0x02,
+ IDPF_TX_CTX_DESC_IL2TAG2 = 0x04,
+ IDPF_TX_CTX_DESC_RSVD = 0x08,
+ IDPF_TX_CTX_DESC_SWTCH_NOTAG = 0x00,
+ IDPF_TX_CTX_DESC_SWTCH_UPLINK = 0x10,
+ IDPF_TX_CTX_DESC_SWTCH_LOCAL = 0x20,
+ IDPF_TX_CTX_DESC_SWTCH_VSI = 0x30,
+ IDPF_TX_CTX_DESC_FILT_AU_EN = 0x40,
+ IDPF_TX_CTX_DESC_FILT_AU_EVICT = 0x80,
+ IDPF_TX_CTX_DESC_RSVD1 = 0xF00
+};
+
+enum idpf_tx_desc_len_fields {
+ /* Note: These are predefined bit offsets */
+ IDPF_TX_DESC_LEN_MACLEN_S = 0, /* 7 BITS */
+ IDPF_TX_DESC_LEN_IPLEN_S = 7, /* 7 BITS */
+ IDPF_TX_DESC_LEN_L4_LEN_S = 14 /* 4 BITS */
+};
+
+enum idpf_tx_base_desc_cmd_bits {
+ IDPF_TX_DESC_CMD_EOP = BIT(0),
+ IDPF_TX_DESC_CMD_RS = BIT(1),
+ /* only on VFs else RSVD */
+ IDPF_TX_DESC_CMD_ICRC = BIT(2),
+ IDPF_TX_DESC_CMD_IL2TAG1 = BIT(3),
+ IDPF_TX_DESC_CMD_RSVD1 = BIT(4),
+ IDPF_TX_DESC_CMD_IIPT_IPV6 = BIT(5),
+ IDPF_TX_DESC_CMD_IIPT_IPV4 = BIT(6),
+ IDPF_TX_DESC_CMD_IIPT_IPV4_CSUM = GENMASK(6, 5),
+ IDPF_TX_DESC_CMD_RSVD2 = BIT(7),
+ IDPF_TX_DESC_CMD_L4T_EOFT_TCP = BIT(8),
+ IDPF_TX_DESC_CMD_L4T_EOFT_SCTP = BIT(9),
+ IDPF_TX_DESC_CMD_L4T_EOFT_UDP = GENMASK(9, 8),
+ IDPF_TX_DESC_CMD_RSVD3 = BIT(10),
+ IDPF_TX_DESC_CMD_RSVD4 = BIT(11),
+};
+
+/* Transmit descriptors */
+/* splitq tx buf, singleq tx buf and singleq compl desc */
+struct idpf_base_tx_desc {
+ __le64 buf_addr; /* Address of descriptor's data buf */
+ __le64 qw1; /* type_cmd_offset_bsz_l2tag1 */
+}; /* read used with buffer queues */
+
+struct idpf_splitq_tx_compl_desc {
+ /* qid=[10:0] comptype=[13:11] rsvd=[14] gen=[15] */
+ __le16 qid_comptype_gen;
+ union {
+ __le16 q_head; /* Queue head */
+ __le16 compl_tag; /* Completion tag */
+ } q_head_compl_tag;
+ u8 ts[3];
+ u8 rsvd; /* Reserved */
+}; /* writeback used with completion queues */
+
+/* Context descriptors */
+struct idpf_base_tx_ctx_desc {
+ struct {
+ __le32 tunneling_params;
+ __le16 l2tag2;
+ __le16 rsvd1;
+ } qw0;
+ __le64 qw1; /* type_cmd_tlen_mss/rt_hint */
+};
+
+/* Common cmd field defines for all desc except Flex Flow Scheduler (0x0C) */
+enum idpf_tx_flex_desc_cmd_bits {
+ IDPF_TX_FLEX_DESC_CMD_EOP = BIT(0),
+ IDPF_TX_FLEX_DESC_CMD_RS = BIT(1),
+ IDPF_TX_FLEX_DESC_CMD_RE = BIT(2),
+ IDPF_TX_FLEX_DESC_CMD_IL2TAG1 = BIT(3),
+ IDPF_TX_FLEX_DESC_CMD_DUMMY = BIT(4),
+ IDPF_TX_FLEX_DESC_CMD_CS_EN = BIT(5),
+ IDPF_TX_FLEX_DESC_CMD_FILT_AU_EN = BIT(6),
+ IDPF_TX_FLEX_DESC_CMD_FILT_AU_EVICT = BIT(7),
+};
+
+struct idpf_flex_tx_desc {
+ __le64 buf_addr; /* Packet buffer address */
+ struct {
+#define IDPF_FLEX_TXD_QW1_DTYPE_S 0
+#define IDPF_FLEX_TXD_QW1_DTYPE_M GENMASK(4, 0)
+#define IDPF_FLEX_TXD_QW1_CMD_S 5
+#define IDPF_FLEX_TXD_QW1_CMD_M GENMASK(15, 5)
+ __le16 cmd_dtype;
+ /* DTYPE=IDPF_TX_DESC_DTYPE_FLEX_L2TAG1_L2TAG2 (0x07) */
+ struct {
+ __le16 l2tag1;
+ __le16 l2tag2;
+ } l2tags;
+ __le16 buf_size;
+ } qw1;
+};
+
+struct idpf_flex_tx_sched_desc {
+ __le64 buf_addr; /* Packet buffer address */
+
+ /* DTYPE = IDPF_TX_DESC_DTYPE_FLEX_FLOW_SCHE_16B (0x0C) */
+ struct {
+ u8 cmd_dtype;
+#define IDPF_TXD_FLEX_FLOW_DTYPE_M GENMASK(4, 0)
+#define IDPF_TXD_FLEX_FLOW_CMD_EOP BIT(5)
+#define IDPF_TXD_FLEX_FLOW_CMD_CS_EN BIT(6)
+#define IDPF_TXD_FLEX_FLOW_CMD_RE BIT(7)
+
+ /* [23:23] Horizon Overflow bit, [22:0] timestamp */
+ u8 ts[3];
+#define IDPF_TXD_FLOW_SCH_HORIZON_OVERFLOW_M BIT(7)
+
+ __le16 compl_tag;
+ __le16 rxr_bufsize;
+#define IDPF_TXD_FLEX_FLOW_RXR BIT(14)
+#define IDPF_TXD_FLEX_FLOW_BUFSIZE_M GENMASK(13, 0)
+ } qw1;
+};
+
+/* Common cmd fields for all flex context descriptors
+ * Note: these defines already account for the 5 bit dtype in the cmd_dtype
+ * field
+ */
+enum idpf_tx_flex_ctx_desc_cmd_bits {
+ IDPF_TX_FLEX_CTX_DESC_CMD_TSO = BIT(5),
+ IDPF_TX_FLEX_CTX_DESC_CMD_TSYN_EN = BIT(6),
+ IDPF_TX_FLEX_CTX_DESC_CMD_L2TAG2 = BIT(7),
+ IDPF_TX_FLEX_CTX_DESC_CMD_SWTCH_UPLNK = BIT(9),
+ IDPF_TX_FLEX_CTX_DESC_CMD_SWTCH_LOCAL = BIT(10),
+ IDPF_TX_FLEX_CTX_DESC_CMD_SWTCH_TARGETVSI = GENMASK(10, 9),
+};
+
+/* Standard flex descriptor TSO context quad word */
+struct idpf_flex_tx_tso_ctx_qw {
+ __le32 flex_tlen;
+#define IDPF_TXD_FLEX_CTX_TLEN_M GENMASK(17, 0)
+#define IDPF_TXD_FLEX_TSO_CTX_FLEX_S 24
+ __le16 mss_rt;
+#define IDPF_TXD_FLEX_CTX_MSS_RT_M GENMASK(13, 0)
+ u8 hdr_len;
+ u8 flex;
+};
+
+struct idpf_flex_tx_ctx_desc {
+ /* DTYPE = IDPF_TX_DESC_DTYPE_FLEX_TSO_CTX (0x05) */
+ struct {
+ struct idpf_flex_tx_tso_ctx_qw qw0;
+ struct {
+ __le16 cmd_dtype;
+ u8 flex[6];
+ } qw1;
+ } tso;
+};
+#endif /* _IDPF_LAN_TXRX_H_ */
diff --git a/drivers/net/ethernet/intel/idpf/idpf_lan_vf_regs.h b/drivers/net/ethernet/intel/idpf/idpf_lan_vf_regs.h
new file mode 100644
index 0000000..3d73b6c
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_lan_vf_regs.h
@@ -0,0 +1,128 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_LAN_VF_REGS_H_
+#define _IDPF_LAN_VF_REGS_H_
+
+/* Reset */
+#define VFGEN_RSTAT 0x00008800
+#define VFGEN_RSTAT_VFR_STATE_S 0
+#define VFGEN_RSTAT_VFR_STATE_M GENMASK(1, 0)
+
+/* Control(VF Mailbox) Queue */
+#define VF_BASE 0x00006000
+
+#define VF_ATQBAL (VF_BASE + 0x1C00)
+#define VF_ATQBAH (VF_BASE + 0x1800)
+#define VF_ATQLEN (VF_BASE + 0x0800)
+#define VF_ATQLEN_ATQLEN_S 0
+#define VF_ATQLEN_ATQLEN_M GENMASK(9, 0)
+#define VF_ATQLEN_ATQVFE_S 28
+#define VF_ATQLEN_ATQVFE_M BIT(VF_ATQLEN_ATQVFE_S)
+#define VF_ATQLEN_ATQOVFL_S 29
+#define VF_ATQLEN_ATQOVFL_M BIT(VF_ATQLEN_ATQOVFL_S)
+#define VF_ATQLEN_ATQCRIT_S 30
+#define VF_ATQLEN_ATQCRIT_M BIT(VF_ATQLEN_ATQCRIT_S)
+#define VF_ATQLEN_ATQENABLE_S 31
+#define VF_ATQLEN_ATQENABLE_M BIT(VF_ATQLEN_ATQENABLE_S)
+#define VF_ATQH (VF_BASE + 0x0400)
+#define VF_ATQH_ATQH_S 0
+#define VF_ATQH_ATQH_M GENMASK(9, 0)
+#define VF_ATQT (VF_BASE + 0x2400)
+
+#define VF_ARQBAL (VF_BASE + 0x0C00)
+#define VF_ARQBAH (VF_BASE)
+#define VF_ARQLEN (VF_BASE + 0x2000)
+#define VF_ARQLEN_ARQLEN_S 0
+#define VF_ARQLEN_ARQLEN_M GENMASK(9, 0)
+#define VF_ARQLEN_ARQVFE_S 28
+#define VF_ARQLEN_ARQVFE_M BIT(VF_ARQLEN_ARQVFE_S)
+#define VF_ARQLEN_ARQOVFL_S 29
+#define VF_ARQLEN_ARQOVFL_M BIT(VF_ARQLEN_ARQOVFL_S)
+#define VF_ARQLEN_ARQCRIT_S 30
+#define VF_ARQLEN_ARQCRIT_M BIT(VF_ARQLEN_ARQCRIT_S)
+#define VF_ARQLEN_ARQENABLE_S 31
+#define VF_ARQLEN_ARQENABLE_M BIT(VF_ARQLEN_ARQENABLE_S)
+#define VF_ARQH (VF_BASE + 0x1400)
+#define VF_ARQH_ARQH_S 0
+#define VF_ARQH_ARQH_M GENMASK(12, 0)
+#define VF_ARQT (VF_BASE + 0x1000)
+
+/* Transmit queues */
+#define VF_QTX_TAIL_BASE 0x00000000
+#define VF_QTX_TAIL(_QTX) (VF_QTX_TAIL_BASE + (_QTX) * 0x4)
+#define VF_QTX_TAIL_EXT_BASE 0x00040000
+#define VF_QTX_TAIL_EXT(_QTX) (VF_QTX_TAIL_EXT_BASE + ((_QTX) * 4))
+
+/* Receive queues */
+#define VF_QRX_TAIL_BASE 0x00002000
+#define VF_QRX_TAIL(_QRX) (VF_QRX_TAIL_BASE + ((_QRX) * 4))
+#define VF_QRX_TAIL_EXT_BASE 0x00050000
+#define VF_QRX_TAIL_EXT(_QRX) (VF_QRX_TAIL_EXT_BASE + ((_QRX) * 4))
+#define VF_QRXB_TAIL_BASE 0x00060000
+#define VF_QRXB_TAIL(_QRX) (VF_QRXB_TAIL_BASE + ((_QRX) * 4))
+
+/* Interrupts */
+#define VF_INT_DYN_CTL0 0x00005C00
+#define VF_INT_DYN_CTL0_INTENA_S 0
+#define VF_INT_DYN_CTL0_INTENA_M BIT(VF_INT_DYN_CTL0_INTENA_S)
+#define VF_INT_DYN_CTL0_ITR_INDX_S 3
+#define VF_INT_DYN_CTL0_ITR_INDX_M GENMASK(4, 3)
+#define VF_INT_DYN_CTLN(_INT) (0x00003800 + ((_INT) * 4))
+#define VF_INT_DYN_CTLN_EXT(_INT) (0x00070000 + ((_INT) * 4))
+#define VF_INT_DYN_CTLN_INTENA_S 0
+#define VF_INT_DYN_CTLN_INTENA_M BIT(VF_INT_DYN_CTLN_INTENA_S)
+#define VF_INT_DYN_CTLN_CLEARPBA_S 1
+#define VF_INT_DYN_CTLN_CLEARPBA_M BIT(VF_INT_DYN_CTLN_CLEARPBA_S)
+#define VF_INT_DYN_CTLN_SWINT_TRIG_S 2
+#define VF_INT_DYN_CTLN_SWINT_TRIG_M BIT(VF_INT_DYN_CTLN_SWINT_TRIG_S)
+#define VF_INT_DYN_CTLN_ITR_INDX_S 3
+#define VF_INT_DYN_CTLN_ITR_INDX_M GENMASK(4, 3)
+#define VF_INT_DYN_CTLN_INTERVAL_S 5
+#define VF_INT_DYN_CTLN_INTERVAL_M BIT(VF_INT_DYN_CTLN_INTERVAL_S)
+#define VF_INT_DYN_CTLN_SW_ITR_INDX_ENA_S 24
+#define VF_INT_DYN_CTLN_SW_ITR_INDX_ENA_M BIT(VF_INT_DYN_CTLN_SW_ITR_INDX_ENA_S)
+#define VF_INT_DYN_CTLN_SW_ITR_INDX_S 25
+#define VF_INT_DYN_CTLN_SW_ITR_INDX_M BIT(VF_INT_DYN_CTLN_SW_ITR_INDX_S)
+#define VF_INT_DYN_CTLN_WB_ON_ITR_S 30
+#define VF_INT_DYN_CTLN_WB_ON_ITR_M BIT(VF_INT_DYN_CTLN_WB_ON_ITR_S)
+#define VF_INT_DYN_CTLN_INTENA_MSK_S 31
+#define VF_INT_DYN_CTLN_INTENA_MSK_M BIT(VF_INT_DYN_CTLN_INTENA_MSK_S)
+/* _ITR is ITR index, _INT is interrupt index, _itrn_indx_spacing is spacing
+ * b/w itrn registers of the same vector
+ */
+#define VF_INT_ITR0(_ITR) (0x00004C00 + ((_ITR) * 4))
+#define VF_INT_ITRN_ADDR(_ITR, _reg_start, _itrn_indx_spacing) \
+ ((_reg_start) + ((_ITR) * (_itrn_indx_spacing)))
+/* For VF with 16 vector support, itrn_reg_spacing is 0x4, itrn_indx_spacing
+ * is 0x40 and base register offset is 0x00002800
+ */
+#define VF_INT_ITRN(_INT, _ITR) \
+ (0x00002800 + ((_INT) * 4) + ((_ITR) * 0x40))
+/* For VF with 64 vector support, itrn_reg_spacing is 0x4, itrn_indx_spacing
+ * is 0x100 and base register offset is 0x00002C00
+ */
+#define VF_INT_ITRN_64(_INT, _ITR) \
+ (0x00002C00 + ((_INT) * 4) + ((_ITR) * 0x100))
+/* For VF with 2k vector support, itrn_reg_spacing is 0x4, itrn_indx_spacing
+ * is 0x2000 and base register offset is 0x00072000
+ */
+#define VF_INT_ITRN_2K(_INT, _ITR) \
+ (0x00072000 + ((_INT) * 4) + ((_ITR) * 0x2000))
+#define VF_INT_ITRN_MAX_INDEX 2
+#define VF_INT_ITRN_INTERVAL_S 0
+#define VF_INT_ITRN_INTERVAL_M GENMASK(11, 0)
+#define VF_INT_PBA_CLEAR 0x00008900
+
+#define VF_INT_ICR0_ENA1 0x00005000
+#define VF_INT_ICR0_ENA1_ADMINQ_S 30
+#define VF_INT_ICR0_ENA1_ADMINQ_M BIT(VF_INT_ICR0_ENA1_ADMINQ_S)
+#define VF_INT_ICR0_ENA1_RSVD_S 31
+#define VF_INT_ICR01 0x00004800
+#define VF_QF_HENA(_i) (0x0000C400 + ((_i) * 4))
+#define VF_QF_HENA_MAX_INDX 1
+#define VF_QF_HKEY(_i) (0x0000CC00 + ((_i) * 4))
+#define VF_QF_HKEY_MAX_INDX 12
+#define VF_QF_HLUT(_i) (0x0000D000 + ((_i) * 4))
+#define VF_QF_HLUT_MAX_INDX 15
+#endif
diff --git a/drivers/net/ethernet/intel/idpf/idpf_lib.c b/drivers/net/ethernet/intel/idpf/idpf_lib.c
new file mode 100644
index 0000000..19809b0
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_lib.c
@@ -0,0 +1,2379 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf.h"
+
+static const struct net_device_ops idpf_netdev_ops_splitq;
+static const struct net_device_ops idpf_netdev_ops_singleq;
+
+const char * const idpf_vport_vc_state_str[] = {
+ IDPF_FOREACH_VPORT_VC_STATE(IDPF_GEN_STRING)
+};
+
+/**
+ * idpf_init_vector_stack - Fill the MSIX vector stack with vector index
+ * @adapter: private data struct
+ *
+ * Return 0 on success, error on failure
+ */
+static int idpf_init_vector_stack(struct idpf_adapter *adapter)
+{
+ struct idpf_vector_lifo *stack;
+ u16 min_vec;
+ u32 i;
+
+ mutex_lock(&adapter->vector_lock);
+ min_vec = adapter->num_msix_entries - adapter->num_avail_msix;
+ stack = &adapter->vector_stack;
+ stack->size = adapter->num_msix_entries;
+ /* set the base and top to point at start of the 'free pool' to
+ * distribute the unused vectors on-demand basis
+ */
+ stack->base = min_vec;
+ stack->top = min_vec;
+
+ stack->vec_idx = kcalloc(stack->size, sizeof(u16), GFP_KERNEL);
+ if (!stack->vec_idx) {
+ mutex_unlock(&adapter->vector_lock);
+
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < stack->size; i++)
+ stack->vec_idx[i] = i;
+
+ mutex_unlock(&adapter->vector_lock);
+
+ return 0;
+}
+
+/**
+ * idpf_deinit_vector_stack - zero out the MSIX vector stack
+ * @adapter: private data struct
+ */
+static void idpf_deinit_vector_stack(struct idpf_adapter *adapter)
+{
+ struct idpf_vector_lifo *stack;
+
+ mutex_lock(&adapter->vector_lock);
+ stack = &adapter->vector_stack;
+ kfree(stack->vec_idx);
+ stack->vec_idx = NULL;
+ mutex_unlock(&adapter->vector_lock);
+}
+
+/**
+ * idpf_mb_intr_rel_irq - Free the IRQ association with the OS
+ * @adapter: adapter structure
+ *
+ * This will also disable interrupt mode and queue up mailbox task. Mailbox
+ * task will reschedule itself if not in interrupt mode.
+ */
+static void idpf_mb_intr_rel_irq(struct idpf_adapter *adapter)
+{
+ clear_bit(IDPF_MB_INTR_MODE, adapter->flags);
+ free_irq(adapter->msix_entries[0].vector, adapter);
+ queue_delayed_work(adapter->mbx_wq, &adapter->mbx_task, 0);
+}
+
+/**
+ * idpf_intr_rel - Release interrupt capabilities and free memory
+ * @adapter: adapter to disable interrupts on
+ */
+void idpf_intr_rel(struct idpf_adapter *adapter)
+{
+ int err;
+
+ if (!adapter->msix_entries)
+ return;
+
+ idpf_mb_intr_rel_irq(adapter);
+ pci_free_irq_vectors(adapter->pdev);
+
+ err = idpf_send_dealloc_vectors_msg(adapter);
+ if (err)
+ dev_err(&adapter->pdev->dev,
+ "Failed to deallocate vectors: %d\n", err);
+
+ idpf_deinit_vector_stack(adapter);
+ kfree(adapter->msix_entries);
+ adapter->msix_entries = NULL;
+}
+
+/**
+ * idpf_mb_intr_clean - Interrupt handler for the mailbox
+ * @irq: interrupt number
+ * @data: pointer to the adapter structure
+ */
+static irqreturn_t idpf_mb_intr_clean(int __always_unused irq, void *data)
+{
+ struct idpf_adapter *adapter = (struct idpf_adapter *)data;
+
+ queue_delayed_work(adapter->mbx_wq, &adapter->mbx_task, 0);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * idpf_mb_irq_enable - Enable MSIX interrupt for the mailbox
+ * @adapter: adapter to get the hardware address for register write
+ */
+static void idpf_mb_irq_enable(struct idpf_adapter *adapter)
+{
+ struct idpf_intr_reg *intr = &adapter->mb_vector.intr_reg;
+ u32 val;
+
+ val = intr->dyn_ctl_intena_m | intr->dyn_ctl_itridx_m;
+ writel(val, intr->dyn_ctl);
+ writel(intr->icr_ena_ctlq_m, intr->icr_ena);
+}
+
+/**
+ * idpf_mb_intr_req_irq - Request irq for the mailbox interrupt
+ * @adapter: adapter structure to pass to the mailbox irq handler
+ */
+static int idpf_mb_intr_req_irq(struct idpf_adapter *adapter)
+{
+ struct idpf_q_vector *mb_vector = &adapter->mb_vector;
+ int irq_num, mb_vidx = 0, err;
+
+ irq_num = adapter->msix_entries[mb_vidx].vector;
+ mb_vector->name = kasprintf(GFP_KERNEL, "%s-%s-%d",
+ dev_driver_string(&adapter->pdev->dev),
+ "Mailbox", mb_vidx);
+ err = request_irq(irq_num, adapter->irq_mb_handler, 0,
+ mb_vector->name, adapter);
+ if (err) {
+ dev_err(&adapter->pdev->dev,
+ "IRQ request for mailbox failed, error: %d\n", err);
+
+ return err;
+ }
+
+ set_bit(IDPF_MB_INTR_MODE, adapter->flags);
+
+ return 0;
+}
+
+/**
+ * idpf_set_mb_vec_id - Set vector index for mailbox
+ * @adapter: adapter structure to access the vector chunks
+ *
+ * The first vector id in the requested vector chunks from the CP is for
+ * the mailbox
+ */
+static void idpf_set_mb_vec_id(struct idpf_adapter *adapter)
+{
+ if (adapter->req_vec_chunks)
+ adapter->mb_vector.v_idx =
+ le16_to_cpu(adapter->caps.mailbox_vector_id);
+ else
+ adapter->mb_vector.v_idx = 0;
+}
+
+/**
+ * idpf_mb_intr_init - Initialize the mailbox interrupt
+ * @adapter: adapter structure to store the mailbox vector
+ */
+static int idpf_mb_intr_init(struct idpf_adapter *adapter)
+{
+ adapter->dev_ops.reg_ops.mb_intr_reg_init(adapter);
+ adapter->irq_mb_handler = idpf_mb_intr_clean;
+
+ return idpf_mb_intr_req_irq(adapter);
+}
+
+/**
+ * idpf_vector_lifo_push - push MSIX vector index onto stack
+ * @adapter: private data struct
+ * @vec_idx: vector index to store
+ */
+static int idpf_vector_lifo_push(struct idpf_adapter *adapter, u16 vec_idx)
+{
+ struct idpf_vector_lifo *stack = &adapter->vector_stack;
+
+ lockdep_assert_held(&adapter->vector_lock);
+
+ if (stack->top == stack->base) {
+ dev_err(&adapter->pdev->dev, "Exceeded the vector stack limit: %d\n",
+ stack->top);
+ return -EINVAL;
+ }
+
+ stack->vec_idx[--stack->top] = vec_idx;
+
+ return 0;
+}
+
+/**
+ * idpf_vector_lifo_pop - pop MSIX vector index from stack
+ * @adapter: private data struct
+ */
+static int idpf_vector_lifo_pop(struct idpf_adapter *adapter)
+{
+ struct idpf_vector_lifo *stack = &adapter->vector_stack;
+
+ lockdep_assert_held(&adapter->vector_lock);
+
+ if (stack->top == stack->size) {
+ dev_err(&adapter->pdev->dev, "No interrupt vectors are available to distribute!\n");
+
+ return -EINVAL;
+ }
+
+ return stack->vec_idx[stack->top++];
+}
+
+/**
+ * idpf_vector_stash - Store the vector indexes onto the stack
+ * @adapter: private data struct
+ * @q_vector_idxs: vector index array
+ * @vec_info: info related to the number of vectors
+ *
+ * This function is a no-op if there are no vectors indexes to be stashed
+ */
+static void idpf_vector_stash(struct idpf_adapter *adapter, u16 *q_vector_idxs,
+ struct idpf_vector_info *vec_info)
+{
+ int i, base = 0;
+ u16 vec_idx;
+
+ lockdep_assert_held(&adapter->vector_lock);
+
+ if (!vec_info->num_curr_vecs)
+ return;
+
+ /* For default vports, no need to stash vector allocated from the
+ * default pool onto the stack
+ */
+ if (vec_info->default_vport)
+ base = IDPF_MIN_Q_VEC;
+
+ for (i = vec_info->num_curr_vecs - 1; i >= base ; i--) {
+ vec_idx = q_vector_idxs[i];
+ idpf_vector_lifo_push(adapter, vec_idx);
+ adapter->num_avail_msix++;
+ }
+}
+
+/**
+ * idpf_req_rel_vector_indexes - Request or release MSIX vector indexes
+ * @adapter: driver specific private structure
+ * @q_vector_idxs: vector index array
+ * @vec_info: info related to the number of vectors
+ *
+ * This is the core function to distribute the MSIX vectors acquired from the
+ * OS. It expects the caller to pass the number of vectors required and
+ * also previously allocated. First, it stashes previously allocated vector
+ * indexes on to the stack and then figures out if it can allocate requested
+ * vectors. It can wait on acquiring the mutex lock. If the caller passes 0 as
+ * requested vectors, then this function just stashes the already allocated
+ * vectors and returns 0.
+ *
+ * Returns actual number of vectors allocated on success, error value on failure
+ * If 0 is returned, implies the stack has no vectors to allocate which is also
+ * a failure case for the caller
+ */
+int idpf_req_rel_vector_indexes(struct idpf_adapter *adapter,
+ u16 *q_vector_idxs,
+ struct idpf_vector_info *vec_info)
+{
+ u16 num_req_vecs, num_alloc_vecs = 0, max_vecs;
+ struct idpf_vector_lifo *stack;
+ int i, j, vecid;
+
+ mutex_lock(&adapter->vector_lock);
+ stack = &adapter->vector_stack;
+ num_req_vecs = vec_info->num_req_vecs;
+
+ /* Stash interrupt vector indexes onto the stack if required */
+ idpf_vector_stash(adapter, q_vector_idxs, vec_info);
+
+ if (!num_req_vecs)
+ goto rel_lock;
+
+ if (vec_info->default_vport) {
+ /* As IDPF_MIN_Q_VEC per default vport is put aside in the
+ * default pool of the stack, use them for default vports
+ */
+ j = vec_info->index * IDPF_MIN_Q_VEC + IDPF_MBX_Q_VEC;
+ for (i = 0; i < IDPF_MIN_Q_VEC; i++) {
+ q_vector_idxs[num_alloc_vecs++] = stack->vec_idx[j++];
+ num_req_vecs--;
+ }
+ }
+
+ /* Find if stack has enough vector to allocate */
+ max_vecs = min(adapter->num_avail_msix, num_req_vecs);
+
+ for (j = 0; j < max_vecs; j++) {
+ vecid = idpf_vector_lifo_pop(adapter);
+ q_vector_idxs[num_alloc_vecs++] = vecid;
+ }
+ adapter->num_avail_msix -= max_vecs;
+
+rel_lock:
+ mutex_unlock(&adapter->vector_lock);
+
+ return num_alloc_vecs;
+}
+
+/**
+ * idpf_intr_req - Request interrupt capabilities
+ * @adapter: adapter to enable interrupts on
+ *
+ * Returns 0 on success, negative on failure
+ */
+int idpf_intr_req(struct idpf_adapter *adapter)
+{
+ u16 default_vports = idpf_get_default_vports(adapter);
+ int num_q_vecs, total_vecs, num_vec_ids;
+ int min_vectors, v_actual, err;
+ unsigned int vector;
+ u16 *vecids;
+
+ total_vecs = idpf_get_reserved_vecs(adapter);
+ num_q_vecs = total_vecs - IDPF_MBX_Q_VEC;
+
+ err = idpf_send_alloc_vectors_msg(adapter, num_q_vecs);
+ if (err) {
+ dev_err(&adapter->pdev->dev,
+ "Failed to allocate %d vectors: %d\n", num_q_vecs, err);
+
+ return -EAGAIN;
+ }
+
+ min_vectors = IDPF_MBX_Q_VEC + IDPF_MIN_Q_VEC * default_vports;
+ v_actual = pci_alloc_irq_vectors(adapter->pdev, min_vectors,
+ total_vecs, PCI_IRQ_MSIX);
+ if (v_actual < min_vectors) {
+ dev_err(&adapter->pdev->dev, "Failed to allocate MSIX vectors: %d\n",
+ v_actual);
+ err = -EAGAIN;
+ goto send_dealloc_vecs;
+ }
+
+ adapter->msix_entries = kcalloc(v_actual, sizeof(struct msix_entry),
+ GFP_KERNEL);
+
+ if (!adapter->msix_entries) {
+ err = -ENOMEM;
+ goto free_irq;
+ }
+
+ idpf_set_mb_vec_id(adapter);
+
+ vecids = kcalloc(total_vecs, sizeof(u16), GFP_KERNEL);
+ if (!vecids) {
+ err = -ENOMEM;
+ goto free_msix;
+ }
+
+ if (adapter->req_vec_chunks) {
+ struct virtchnl2_vector_chunks *vchunks;
+ struct virtchnl2_alloc_vectors *ac;
+
+ ac = adapter->req_vec_chunks;
+ vchunks = &ac->vchunks;
+
+ num_vec_ids = idpf_get_vec_ids(adapter, vecids, total_vecs,
+ vchunks);
+ if (num_vec_ids < v_actual) {
+ err = -EINVAL;
+ goto free_vecids;
+ }
+ } else {
+ int i;
+
+ for (i = 0; i < v_actual; i++)
+ vecids[i] = i;
+ }
+
+ for (vector = 0; vector < v_actual; vector++) {
+ adapter->msix_entries[vector].entry = vecids[vector];
+ adapter->msix_entries[vector].vector =
+ pci_irq_vector(adapter->pdev, vector);
+ }
+
+ adapter->num_req_msix = total_vecs;
+ adapter->num_msix_entries = v_actual;
+ /* 'num_avail_msix' is used to distribute excess vectors to the vports
+ * after considering the minimum vectors required per each default
+ * vport
+ */
+ adapter->num_avail_msix = v_actual - min_vectors;
+
+ /* Fill MSIX vector lifo stack with vector indexes */
+ err = idpf_init_vector_stack(adapter);
+ if (err)
+ goto free_vecids;
+
+ err = idpf_mb_intr_init(adapter);
+ if (err)
+ goto deinit_vec_stack;
+ idpf_mb_irq_enable(adapter);
+ kfree(vecids);
+
+ return 0;
+
+deinit_vec_stack:
+ idpf_deinit_vector_stack(adapter);
+free_vecids:
+ kfree(vecids);
+free_msix:
+ kfree(adapter->msix_entries);
+ adapter->msix_entries = NULL;
+free_irq:
+ pci_free_irq_vectors(adapter->pdev);
+send_dealloc_vecs:
+ idpf_send_dealloc_vectors_msg(adapter);
+
+ return err;
+}
+
+/**
+ * idpf_find_mac_filter - Search filter list for specific mac filter
+ * @vconfig: Vport config structure
+ * @macaddr: The MAC address
+ *
+ * Returns ptr to the filter object or NULL. Must be called while holding the
+ * mac_filter_list_lock.
+ **/
+static struct idpf_mac_filter *idpf_find_mac_filter(struct idpf_vport_config *vconfig,
+ const u8 *macaddr)
+{
+ struct idpf_mac_filter *f;
+
+ if (!macaddr)
+ return NULL;
+
+ list_for_each_entry(f, &vconfig->user_config.mac_filter_list, list) {
+ if (ether_addr_equal(macaddr, f->macaddr))
+ return f;
+ }
+
+ return NULL;
+}
+
+/**
+ * __idpf_del_mac_filter - Delete a MAC filter from the filter list
+ * @vport_config: Vport config structure
+ * @macaddr: The MAC address
+ *
+ * Returns 0 on success, error value on failure
+ **/
+static int __idpf_del_mac_filter(struct idpf_vport_config *vport_config,
+ const u8 *macaddr)
+{
+ struct idpf_mac_filter *f;
+
+ spin_lock_bh(&vport_config->mac_filter_list_lock);
+ f = idpf_find_mac_filter(vport_config, macaddr);
+ if (f) {
+ list_del(&f->list);
+ kfree(f);
+ }
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+
+ return 0;
+}
+
+/**
+ * idpf_del_mac_filter - Delete a MAC filter from the filter list
+ * @vport: Main vport structure
+ * @np: Netdev private structure
+ * @macaddr: The MAC address
+ * @async: Don't wait for return message
+ *
+ * Removes filter from list and if interface is up, tells hardware about the
+ * removed filter.
+ **/
+static int idpf_del_mac_filter(struct idpf_vport *vport,
+ struct idpf_netdev_priv *np,
+ const u8 *macaddr, bool async)
+{
+ struct idpf_vport_config *vport_config;
+ struct idpf_mac_filter *f;
+
+ vport_config = np->adapter->vport_config[np->vport_idx];
+
+ spin_lock_bh(&vport_config->mac_filter_list_lock);
+ f = idpf_find_mac_filter(vport_config, macaddr);
+ if (f) {
+ f->remove = true;
+ } else {
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+
+ return -EINVAL;
+ }
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+
+ if (np->state == __IDPF_VPORT_UP) {
+ int err;
+
+ err = idpf_add_del_mac_filters(vport, np, false, async);
+ if (err)
+ return err;
+ }
+
+ return __idpf_del_mac_filter(vport_config, macaddr);
+}
+
+/**
+ * __idpf_add_mac_filter - Add mac filter helper function
+ * @vport_config: Vport config structure
+ * @macaddr: Address to add
+ *
+ * Takes mac_filter_list_lock spinlock to add new filter to list.
+ */
+static int __idpf_add_mac_filter(struct idpf_vport_config *vport_config,
+ const u8 *macaddr)
+{
+ struct idpf_mac_filter *f;
+
+ spin_lock_bh(&vport_config->mac_filter_list_lock);
+
+ f = idpf_find_mac_filter(vport_config, macaddr);
+ if (f) {
+ f->remove = false;
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+
+ return 0;
+ }
+
+ f = kzalloc(sizeof(*f), GFP_ATOMIC);
+ if (!f) {
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+
+ return -ENOMEM;
+ }
+
+ ether_addr_copy(f->macaddr, macaddr);
+ list_add_tail(&f->list, &vport_config->user_config.mac_filter_list);
+ f->add = true;
+
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+
+ return 0;
+}
+
+/**
+ * idpf_add_mac_filter - Add a mac filter to the filter list
+ * @vport: Main vport structure
+ * @np: Netdev private structure
+ * @macaddr: The MAC address
+ * @async: Don't wait for return message
+ *
+ * Returns 0 on success or error on failure. If interface is up, we'll also
+ * send the virtchnl message to tell hardware about the filter.
+ **/
+static int idpf_add_mac_filter(struct idpf_vport *vport,
+ struct idpf_netdev_priv *np,
+ const u8 *macaddr, bool async)
+{
+ struct idpf_vport_config *vport_config;
+ int err;
+
+ vport_config = np->adapter->vport_config[np->vport_idx];
+ err = __idpf_add_mac_filter(vport_config, macaddr);
+ if (err)
+ return err;
+
+ if (np->state == __IDPF_VPORT_UP)
+ err = idpf_add_del_mac_filters(vport, np, true, async);
+
+ return err;
+}
+
+/**
+ * idpf_del_all_mac_filters - Delete all MAC filters in list
+ * @vport: main vport struct
+ *
+ * Takes mac_filter_list_lock spinlock. Deletes all filters
+ */
+static void idpf_del_all_mac_filters(struct idpf_vport *vport)
+{
+ struct idpf_vport_config *vport_config;
+ struct idpf_mac_filter *f, *ftmp;
+
+ vport_config = vport->adapter->vport_config[vport->idx];
+ spin_lock_bh(&vport_config->mac_filter_list_lock);
+
+ list_for_each_entry_safe(f, ftmp, &vport_config->user_config.mac_filter_list,
+ list) {
+ list_del(&f->list);
+ kfree(f);
+ }
+
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+}
+
+/**
+ * idpf_restore_mac_filters - Re-add all MAC filters in list
+ * @vport: main vport struct
+ *
+ * Takes mac_filter_list_lock spinlock. Sets add field to true for filters to
+ * resync filters back to HW.
+ */
+static void idpf_restore_mac_filters(struct idpf_vport *vport)
+{
+ struct idpf_vport_config *vport_config;
+ struct idpf_mac_filter *f;
+
+ vport_config = vport->adapter->vport_config[vport->idx];
+ spin_lock_bh(&vport_config->mac_filter_list_lock);
+
+ list_for_each_entry(f, &vport_config->user_config.mac_filter_list, list)
+ f->add = true;
+
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+
+ idpf_add_del_mac_filters(vport, netdev_priv(vport->netdev),
+ true, false);
+}
+
+/**
+ * idpf_remove_mac_filters - Remove all MAC filters in list
+ * @vport: main vport struct
+ *
+ * Takes mac_filter_list_lock spinlock. Sets remove field to true for filters
+ * to remove filters in HW.
+ */
+static void idpf_remove_mac_filters(struct idpf_vport *vport)
+{
+ struct idpf_vport_config *vport_config;
+ struct idpf_mac_filter *f;
+
+ vport_config = vport->adapter->vport_config[vport->idx];
+ spin_lock_bh(&vport_config->mac_filter_list_lock);
+
+ list_for_each_entry(f, &vport_config->user_config.mac_filter_list, list)
+ f->remove = true;
+
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+
+ idpf_add_del_mac_filters(vport, netdev_priv(vport->netdev),
+ false, false);
+}
+
+/**
+ * idpf_deinit_mac_addr - deinitialize mac address for vport
+ * @vport: main vport structure
+ */
+static void idpf_deinit_mac_addr(struct idpf_vport *vport)
+{
+ struct idpf_vport_config *vport_config;
+ struct idpf_mac_filter *f;
+
+ vport_config = vport->adapter->vport_config[vport->idx];
+
+ spin_lock_bh(&vport_config->mac_filter_list_lock);
+
+ f = idpf_find_mac_filter(vport_config, vport->default_mac_addr);
+ if (f) {
+ list_del(&f->list);
+ kfree(f);
+ }
+
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+}
+
+/**
+ * idpf_init_mac_addr - initialize mac address for vport
+ * @vport: main vport structure
+ * @netdev: pointer to netdev struct associated with this vport
+ */
+static int idpf_init_mac_addr(struct idpf_vport *vport,
+ struct net_device *netdev)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_adapter *adapter = vport->adapter;
+ int err;
+
+ if (is_valid_ether_addr(vport->default_mac_addr)) {
+ eth_hw_addr_set(netdev, vport->default_mac_addr);
+ ether_addr_copy(netdev->perm_addr, vport->default_mac_addr);
+
+ return idpf_add_mac_filter(vport, np, vport->default_mac_addr,
+ false);
+ }
+
+ if (!idpf_is_cap_ena(adapter, IDPF_OTHER_CAPS,
+ VIRTCHNL2_CAP_MACFILTER)) {
+ dev_err(&adapter->pdev->dev,
+ "MAC address is not provided and capability is not set\n");
+
+ return -EINVAL;
+ }
+
+ eth_hw_addr_random(netdev);
+ err = idpf_add_mac_filter(vport, np, netdev->dev_addr, false);
+ if (err)
+ return err;
+
+ dev_info(&adapter->pdev->dev, "Invalid MAC address %pM, using random %pM\n",
+ vport->default_mac_addr, netdev->dev_addr);
+ ether_addr_copy(vport->default_mac_addr, netdev->dev_addr);
+
+ return 0;
+}
+
+/**
+ * idpf_cfg_netdev - Allocate, configure and register a netdev
+ * @vport: main vport structure
+ *
+ * Returns 0 on success, negative value on failure.
+ */
+static int idpf_cfg_netdev(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct idpf_vport_config *vport_config;
+ netdev_features_t dflt_features;
+ netdev_features_t offloads = 0;
+ struct idpf_netdev_priv *np;
+ struct net_device *netdev;
+ u16 idx = vport->idx;
+ int err;
+
+ vport_config = adapter->vport_config[idx];
+
+ /* It's possible we already have a netdev allocated and registered for
+ * this vport
+ */
+ if (test_bit(IDPF_VPORT_REG_NETDEV, vport_config->flags)) {
+ netdev = adapter->netdevs[idx];
+ np = netdev_priv(netdev);
+ np->vport = vport;
+ np->vport_idx = vport->idx;
+ np->vport_id = vport->vport_id;
+ vport->netdev = netdev;
+
+ return idpf_init_mac_addr(vport, netdev);
+ }
+
+ netdev = alloc_etherdev_mqs(sizeof(struct idpf_netdev_priv),
+ vport_config->max_q.max_txq,
+ vport_config->max_q.max_rxq);
+ if (!netdev)
+ return -ENOMEM;
+
+ vport->netdev = netdev;
+ np = netdev_priv(netdev);
+ np->vport = vport;
+ np->adapter = adapter;
+ np->vport_idx = vport->idx;
+ np->vport_id = vport->vport_id;
+
+ spin_lock_init(&np->stats_lock);
+
+ err = idpf_init_mac_addr(vport, netdev);
+ if (err) {
+ free_netdev(vport->netdev);
+ vport->netdev = NULL;
+
+ return err;
+ }
+
+ /* assign netdev_ops */
+ if (idpf_is_queue_model_split(vport->txq_model))
+ netdev->netdev_ops = &idpf_netdev_ops_splitq;
+ else
+ netdev->netdev_ops = &idpf_netdev_ops_singleq;
+
+ /* setup watchdog timeout value to be 5 second */
+ netdev->watchdog_timeo = 5 * HZ;
+
+ /* configure default MTU size */
+ netdev->min_mtu = ETH_MIN_MTU;
+ netdev->max_mtu = vport->max_mtu;
+
+ dflt_features = NETIF_F_SG |
+ NETIF_F_HIGHDMA;
+
+ if (idpf_is_cap_ena_all(adapter, IDPF_RSS_CAPS, IDPF_CAP_RSS))
+ dflt_features |= NETIF_F_RXHASH;
+ if (idpf_is_cap_ena_all(adapter, IDPF_CSUM_CAPS, IDPF_CAP_RX_CSUM_L4V4))
+ dflt_features |= NETIF_F_IP_CSUM;
+ if (idpf_is_cap_ena_all(adapter, IDPF_CSUM_CAPS, IDPF_CAP_RX_CSUM_L4V6))
+ dflt_features |= NETIF_F_IPV6_CSUM;
+ if (idpf_is_cap_ena(adapter, IDPF_CSUM_CAPS, IDPF_CAP_RX_CSUM))
+ dflt_features |= NETIF_F_RXCSUM;
+ if (idpf_is_cap_ena_all(adapter, IDPF_CSUM_CAPS, IDPF_CAP_SCTP_CSUM))
+ dflt_features |= NETIF_F_SCTP_CRC;
+
+ if (idpf_is_cap_ena(adapter, IDPF_SEG_CAPS, VIRTCHNL2_CAP_SEG_IPV4_TCP))
+ dflt_features |= NETIF_F_TSO;
+ if (idpf_is_cap_ena(adapter, IDPF_SEG_CAPS, VIRTCHNL2_CAP_SEG_IPV6_TCP))
+ dflt_features |= NETIF_F_TSO6;
+ if (idpf_is_cap_ena_all(adapter, IDPF_SEG_CAPS,
+ VIRTCHNL2_CAP_SEG_IPV4_UDP |
+ VIRTCHNL2_CAP_SEG_IPV6_UDP))
+ dflt_features |= NETIF_F_GSO_UDP_L4;
+ if (idpf_is_cap_ena_all(adapter, IDPF_RSC_CAPS, IDPF_CAP_RSC))
+ offloads |= NETIF_F_GRO_HW;
+ /* advertise to stack only if offloads for encapsulated packets is
+ * supported
+ */
+ if (idpf_is_cap_ena(vport->adapter, IDPF_SEG_CAPS,
+ VIRTCHNL2_CAP_SEG_TX_SINGLE_TUNNEL)) {
+ offloads |= NETIF_F_GSO_UDP_TUNNEL |
+ NETIF_F_GSO_GRE |
+ NETIF_F_GSO_GRE_CSUM |
+ NETIF_F_GSO_PARTIAL |
+ NETIF_F_GSO_UDP_TUNNEL_CSUM |
+ NETIF_F_GSO_IPXIP4 |
+ NETIF_F_GSO_IPXIP6 |
+ 0;
+
+ if (!idpf_is_cap_ena_all(vport->adapter, IDPF_CSUM_CAPS,
+ IDPF_CAP_TUNNEL_TX_CSUM))
+ netdev->gso_partial_features |=
+ NETIF_F_GSO_UDP_TUNNEL_CSUM;
+
+ netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
+ offloads |= NETIF_F_TSO_MANGLEID;
+ }
+ if (idpf_is_cap_ena(adapter, IDPF_OTHER_CAPS, VIRTCHNL2_CAP_LOOPBACK))
+ offloads |= NETIF_F_LOOPBACK;
+
+ netdev->features |= dflt_features;
+ netdev->hw_features |= dflt_features | offloads;
+ netdev->hw_enc_features |= dflt_features | offloads;
+ idpf_set_ethtool_ops(netdev);
+ SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
+
+ /* carrier off on init to avoid Tx hangs */
+ netif_carrier_off(netdev);
+
+ /* make sure transmit queues start off as stopped */
+ netif_tx_stop_all_queues(netdev);
+
+ /* The vport can be arbitrarily released so we need to also track
+ * netdevs in the adapter struct
+ */
+ adapter->netdevs[idx] = netdev;
+
+ return 0;
+}
+
+/**
+ * idpf_get_free_slot - get the next non-NULL location index in array
+ * @adapter: adapter in which to look for a free vport slot
+ */
+static int idpf_get_free_slot(struct idpf_adapter *adapter)
+{
+ unsigned int i;
+
+ for (i = 0; i < adapter->max_vports; i++) {
+ if (!adapter->vports[i])
+ return i;
+ }
+
+ return IDPF_NO_FREE_SLOT;
+}
+
+/**
+ * idpf_remove_features - Turn off feature configs
+ * @vport: virtual port structure
+ */
+static void idpf_remove_features(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+
+ if (idpf_is_cap_ena(adapter, IDPF_OTHER_CAPS, VIRTCHNL2_CAP_MACFILTER))
+ idpf_remove_mac_filters(vport);
+}
+
+/**
+ * idpf_vport_stop - Disable a vport
+ * @vport: vport to disable
+ */
+static void idpf_vport_stop(struct idpf_vport *vport)
+{
+ struct idpf_netdev_priv *np = netdev_priv(vport->netdev);
+
+ if (np->state <= __IDPF_VPORT_DOWN)
+ return;
+
+ netif_carrier_off(vport->netdev);
+ netif_tx_disable(vport->netdev);
+
+ idpf_send_disable_vport_msg(vport);
+ idpf_send_disable_queues_msg(vport);
+ idpf_send_map_unmap_queue_vector_msg(vport, false);
+ /* Normally we ask for queues in create_vport, but if the number of
+ * initially requested queues have changed, for example via ethtool
+ * set channels, we do delete queues and then add the queues back
+ * instead of deleting and reallocating the vport.
+ */
+ if (test_and_clear_bit(IDPF_VPORT_DEL_QUEUES, vport->flags))
+ idpf_send_delete_queues_msg(vport);
+
+ idpf_remove_features(vport);
+
+ vport->link_up = false;
+ idpf_vport_intr_deinit(vport);
+ idpf_vport_intr_rel(vport);
+ idpf_vport_queues_rel(vport);
+ np->state = __IDPF_VPORT_DOWN;
+}
+
+/**
+ * idpf_stop - Disables a network interface
+ * @netdev: network interface device structure
+ *
+ * The stop entry point is called when an interface is de-activated by the OS,
+ * and the netdevice enters the DOWN state. The hardware is still under the
+ * driver's control, but the netdev interface is disabled.
+ *
+ * Returns success only - not allowed to fail
+ */
+static int idpf_stop(struct net_device *netdev)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport *vport;
+
+ if (test_bit(IDPF_REMOVE_IN_PROG, np->adapter->flags))
+ return 0;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ idpf_vport_stop(vport);
+
+ idpf_vport_ctrl_unlock(netdev);
+
+ return 0;
+}
+
+/**
+ * idpf_decfg_netdev - Unregister the netdev
+ * @vport: vport for which netdev to be unregistered
+ */
+static void idpf_decfg_netdev(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+
+ unregister_netdev(vport->netdev);
+ free_netdev(vport->netdev);
+ vport->netdev = NULL;
+
+ adapter->netdevs[vport->idx] = NULL;
+}
+
+/**
+ * idpf_vport_rel - Delete a vport and free its resources
+ * @vport: the vport being removed
+ */
+static void idpf_vport_rel(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct idpf_vport_config *vport_config;
+ struct idpf_vector_info vec_info;
+ struct idpf_rss_data *rss_data;
+ struct idpf_vport_max_q max_q;
+ u16 idx = vport->idx;
+ int i;
+
+ vport_config = adapter->vport_config[vport->idx];
+ idpf_deinit_rss(vport);
+ rss_data = &vport_config->user_config.rss_data;
+ kfree(rss_data->rss_key);
+ rss_data->rss_key = NULL;
+
+ idpf_send_destroy_vport_msg(vport);
+
+ /* Set all bits as we dont know on which vc_state the vport vhnl_wq
+ * is waiting on and wakeup the virtchnl workqueue even if it is
+ * waiting for the response as we are going down
+ */
+ for (i = 0; i < IDPF_VC_NBITS; i++)
+ set_bit(i, vport->vc_state);
+ wake_up(&vport->vchnl_wq);
+
+ mutex_destroy(&vport->vc_buf_lock);
+
+ /* Clear all the bits */
+ for (i = 0; i < IDPF_VC_NBITS; i++)
+ clear_bit(i, vport->vc_state);
+
+ /* Release all max queues allocated to the adapter's pool */
+ max_q.max_rxq = vport_config->max_q.max_rxq;
+ max_q.max_txq = vport_config->max_q.max_txq;
+ max_q.max_bufq = vport_config->max_q.max_bufq;
+ max_q.max_complq = vport_config->max_q.max_complq;
+ idpf_vport_dealloc_max_qs(adapter, &max_q);
+
+ /* Release all the allocated vectors on the stack */
+ vec_info.num_req_vecs = 0;
+ vec_info.num_curr_vecs = vport->num_q_vectors;
+ vec_info.default_vport = vport->default_vport;
+
+ idpf_req_rel_vector_indexes(adapter, vport->q_vector_idxs, &vec_info);
+
+ kfree(vport->q_vector_idxs);
+ vport->q_vector_idxs = NULL;
+
+ kfree(adapter->vport_params_recvd[idx]);
+ adapter->vport_params_recvd[idx] = NULL;
+ kfree(adapter->vport_params_reqd[idx]);
+ adapter->vport_params_reqd[idx] = NULL;
+ if (adapter->vport_config[idx]) {
+ kfree(adapter->vport_config[idx]->req_qs_chunks);
+ adapter->vport_config[idx]->req_qs_chunks = NULL;
+ }
+ kfree(vport);
+ adapter->num_alloc_vports--;
+}
+
+/**
+ * idpf_vport_dealloc - cleanup and release a given vport
+ * @vport: pointer to idpf vport structure
+ *
+ * returns nothing
+ */
+static void idpf_vport_dealloc(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ unsigned int i = vport->idx;
+
+ idpf_deinit_mac_addr(vport);
+ idpf_vport_stop(vport);
+
+ if (!test_bit(IDPF_HR_RESET_IN_PROG, adapter->flags))
+ idpf_decfg_netdev(vport);
+ if (test_bit(IDPF_REMOVE_IN_PROG, adapter->flags))
+ idpf_del_all_mac_filters(vport);
+
+ if (adapter->netdevs[i]) {
+ struct idpf_netdev_priv *np = netdev_priv(adapter->netdevs[i]);
+
+ np->vport = NULL;
+ }
+
+ idpf_vport_rel(vport);
+
+ adapter->vports[i] = NULL;
+ adapter->next_vport = idpf_get_free_slot(adapter);
+}
+
+/**
+ * idpf_vport_alloc - Allocates the next available struct vport in the adapter
+ * @adapter: board private structure
+ * @max_q: vport max queue info
+ *
+ * returns a pointer to a vport on success, NULL on failure.
+ */
+static struct idpf_vport *idpf_vport_alloc(struct idpf_adapter *adapter,
+ struct idpf_vport_max_q *max_q)
+{
+ struct idpf_rss_data *rss_data;
+ u16 idx = adapter->next_vport;
+ struct idpf_vport *vport;
+ u16 num_max_q;
+
+ if (idx == IDPF_NO_FREE_SLOT)
+ return NULL;
+
+ vport = kzalloc(sizeof(*vport), GFP_KERNEL);
+ if (!vport)
+ return vport;
+
+ if (!adapter->vport_config[idx]) {
+ struct idpf_vport_config *vport_config;
+
+ vport_config = kzalloc(sizeof(*vport_config), GFP_KERNEL);
+ if (!vport_config) {
+ kfree(vport);
+
+ return NULL;
+ }
+
+ adapter->vport_config[idx] = vport_config;
+ }
+
+ vport->idx = idx;
+ vport->adapter = adapter;
+ vport->compln_clean_budget = IDPF_TX_COMPLQ_CLEAN_BUDGET;
+ vport->default_vport = adapter->num_alloc_vports <
+ idpf_get_default_vports(adapter);
+
+ num_max_q = max(max_q->max_txq, max_q->max_rxq);
+ vport->q_vector_idxs = kcalloc(num_max_q, sizeof(u16), GFP_KERNEL);
+ if (!vport->q_vector_idxs) {
+ kfree(vport);
+
+ return NULL;
+ }
+ idpf_vport_init(vport, max_q);
+
+ /* This alloc is done separate from the LUT because it's not strictly
+ * dependent on how many queues we have. If we change number of queues
+ * and soft reset we'll need a new LUT but the key can remain the same
+ * for as long as the vport exists.
+ */
+ rss_data = &adapter->vport_config[idx]->user_config.rss_data;
+ rss_data->rss_key = kzalloc(rss_data->rss_key_size, GFP_KERNEL);
+ if (!rss_data->rss_key) {
+ kfree(vport);
+
+ return NULL;
+ }
+ /* Initialize default rss key */
+ netdev_rss_key_fill((void *)rss_data->rss_key, rss_data->rss_key_size);
+
+ /* fill vport slot in the adapter struct */
+ adapter->vports[idx] = vport;
+ adapter->vport_ids[idx] = idpf_get_vport_id(vport);
+
+ adapter->num_alloc_vports++;
+ /* prepare adapter->next_vport for next use */
+ adapter->next_vport = idpf_get_free_slot(adapter);
+
+ return vport;
+}
+
+/**
+ * idpf_get_stats64 - get statistics for network device structure
+ * @netdev: network interface device structure
+ * @stats: main device statistics structure
+ */
+static void idpf_get_stats64(struct net_device *netdev,
+ struct rtnl_link_stats64 *stats)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+
+ spin_lock_bh(&np->stats_lock);
+ *stats = np->netstats;
+ spin_unlock_bh(&np->stats_lock);
+}
+
+/**
+ * idpf_statistics_task - Delayed task to get statistics over mailbox
+ * @work: work_struct handle to our data
+ */
+void idpf_statistics_task(struct work_struct *work)
+{
+ struct idpf_adapter *adapter;
+ int i;
+
+ adapter = container_of(work, struct idpf_adapter, stats_task.work);
+
+ for (i = 0; i < adapter->max_vports; i++) {
+ struct idpf_vport *vport = adapter->vports[i];
+
+ if (vport && !test_bit(IDPF_HR_RESET_IN_PROG, adapter->flags))
+ idpf_send_get_stats_msg(vport);
+ }
+
+ queue_delayed_work(adapter->stats_wq, &adapter->stats_task,
+ msecs_to_jiffies(10000));
+}
+
+/**
+ * idpf_mbx_task - Delayed task to handle mailbox responses
+ * @work: work_struct handle
+ */
+void idpf_mbx_task(struct work_struct *work)
+{
+ struct idpf_adapter *adapter;
+
+ adapter = container_of(work, struct idpf_adapter, mbx_task.work);
+
+ if (test_bit(IDPF_MB_INTR_MODE, adapter->flags))
+ idpf_mb_irq_enable(adapter);
+ else
+ queue_delayed_work(adapter->mbx_wq, &adapter->mbx_task,
+ msecs_to_jiffies(300));
+
+ idpf_recv_mb_msg(adapter, VIRTCHNL2_OP_UNKNOWN, NULL, 0);
+}
+
+/**
+ * idpf_service_task - Delayed task for handling mailbox responses
+ * @work: work_struct handle to our data
+ *
+ */
+void idpf_service_task(struct work_struct *work)
+{
+ struct idpf_adapter *adapter;
+
+ adapter = container_of(work, struct idpf_adapter, serv_task.work);
+
+ if (idpf_is_reset_detected(adapter) &&
+ !idpf_is_reset_in_prog(adapter) &&
+ !test_bit(IDPF_REMOVE_IN_PROG, adapter->flags)) {
+ dev_info(&adapter->pdev->dev, "HW reset detected\n");
+ set_bit(IDPF_HR_FUNC_RESET, adapter->flags);
+ queue_delayed_work(adapter->vc_event_wq,
+ &adapter->vc_event_task,
+ msecs_to_jiffies(10));
+ }
+
+ queue_delayed_work(adapter->serv_wq, &adapter->serv_task,
+ msecs_to_jiffies(300));
+}
+
+/**
+ * idpf_restore_features - Restore feature configs
+ * @vport: virtual port structure
+ */
+static void idpf_restore_features(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+
+ if (idpf_is_cap_ena(adapter, IDPF_OTHER_CAPS, VIRTCHNL2_CAP_MACFILTER))
+ idpf_restore_mac_filters(vport);
+}
+
+/**
+ * idpf_set_real_num_queues - set number of queues for netdev
+ * @vport: virtual port structure
+ *
+ * Returns 0 on success, negative on failure.
+ */
+static int idpf_set_real_num_queues(struct idpf_vport *vport)
+{
+ int err;
+
+ err = netif_set_real_num_rx_queues(vport->netdev, vport->num_rxq);
+ if (err)
+ return err;
+
+ return netif_set_real_num_tx_queues(vport->netdev, vport->num_txq);
+}
+
+/**
+ * idpf_up_complete - Complete interface up sequence
+ * @vport: virtual port structure
+ *
+ * Returns 0 on success, negative on failure.
+ */
+static int idpf_up_complete(struct idpf_vport *vport)
+{
+ struct idpf_netdev_priv *np = netdev_priv(vport->netdev);
+
+ if (vport->link_up && !netif_carrier_ok(vport->netdev)) {
+ netif_carrier_on(vport->netdev);
+ netif_tx_start_all_queues(vport->netdev);
+ }
+
+ np->state = __IDPF_VPORT_UP;
+
+ return 0;
+}
+
+/**
+ * idpf_rx_init_buf_tail - Write initial buffer ring tail value
+ * @vport: virtual port struct
+ */
+static void idpf_rx_init_buf_tail(struct idpf_vport *vport)
+{
+ int i, j;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *grp = &vport->rxq_grps[i];
+
+ if (idpf_is_queue_model_split(vport->rxq_model)) {
+ for (j = 0; j < vport->num_bufqs_per_qgrp; j++) {
+ struct idpf_queue *q =
+ &grp->splitq.bufq_sets[j].bufq;
+
+ writel(q->next_to_alloc, q->tail);
+ }
+ } else {
+ for (j = 0; j < grp->singleq.num_rxq; j++) {
+ struct idpf_queue *q =
+ grp->singleq.rxqs[j];
+
+ writel(q->next_to_alloc, q->tail);
+ }
+ }
+ }
+}
+
+/**
+ * idpf_vport_open - Bring up a vport
+ * @vport: vport to bring up
+ * @alloc_res: allocate queue resources
+ */
+static int idpf_vport_open(struct idpf_vport *vport, bool alloc_res)
+{
+ struct idpf_netdev_priv *np = netdev_priv(vport->netdev);
+ struct idpf_adapter *adapter = vport->adapter;
+ struct idpf_vport_config *vport_config;
+ int err;
+
+ if (np->state != __IDPF_VPORT_DOWN)
+ return -EBUSY;
+
+ /* we do not allow interface up just yet */
+ netif_carrier_off(vport->netdev);
+
+ if (alloc_res) {
+ err = idpf_vport_queues_alloc(vport);
+ if (err)
+ return err;
+ }
+
+ err = idpf_vport_intr_alloc(vport);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to allocate interrupts for vport %u: %d\n",
+ vport->vport_id, err);
+ goto queues_rel;
+ }
+
+ err = idpf_vport_queue_ids_init(vport);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to initialize queue ids for vport %u: %d\n",
+ vport->vport_id, err);
+ goto intr_rel;
+ }
+
+ err = idpf_vport_intr_init(vport);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to initialize interrupts for vport %u: %d\n",
+ vport->vport_id, err);
+ goto intr_rel;
+ }
+
+ err = idpf_rx_bufs_init_all(vport);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to initialize RX buffers for vport %u: %d\n",
+ vport->vport_id, err);
+ goto intr_rel;
+ }
+
+ err = idpf_queue_reg_init(vport);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to initialize queue registers for vport %u: %d\n",
+ vport->vport_id, err);
+ goto intr_rel;
+ }
+
+ idpf_rx_init_buf_tail(vport);
+
+ err = idpf_send_config_queues_msg(vport);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to configure queues for vport %u, %d\n",
+ vport->vport_id, err);
+ goto intr_deinit;
+ }
+
+ err = idpf_send_map_unmap_queue_vector_msg(vport, true);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to map queue vectors for vport %u: %d\n",
+ vport->vport_id, err);
+ goto intr_deinit;
+ }
+
+ err = idpf_send_enable_queues_msg(vport);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to enable queues for vport %u: %d\n",
+ vport->vport_id, err);
+ goto unmap_queue_vectors;
+ }
+
+ err = idpf_send_enable_vport_msg(vport);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to enable vport %u: %d\n",
+ vport->vport_id, err);
+ err = -EAGAIN;
+ goto disable_queues;
+ }
+
+ idpf_restore_features(vport);
+
+ vport_config = adapter->vport_config[vport->idx];
+ if (vport_config->user_config.rss_data.rss_lut)
+ err = idpf_config_rss(vport);
+ else
+ err = idpf_init_rss(vport);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to initialize RSS for vport %u: %d\n",
+ vport->vport_id, err);
+ goto disable_vport;
+ }
+
+ err = idpf_up_complete(vport);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to complete interface up for vport %u: %d\n",
+ vport->vport_id, err);
+ goto deinit_rss;
+ }
+
+ return 0;
+
+deinit_rss:
+ idpf_deinit_rss(vport);
+disable_vport:
+ idpf_send_disable_vport_msg(vport);
+disable_queues:
+ idpf_send_disable_queues_msg(vport);
+unmap_queue_vectors:
+ idpf_send_map_unmap_queue_vector_msg(vport, false);
+intr_deinit:
+ idpf_vport_intr_deinit(vport);
+intr_rel:
+ idpf_vport_intr_rel(vport);
+queues_rel:
+ idpf_vport_queues_rel(vport);
+
+ return err;
+}
+
+/**
+ * idpf_init_task - Delayed initialization task
+ * @work: work_struct handle to our data
+ *
+ * Init task finishes up pending work started in probe. Due to the asynchronous
+ * nature in which the device communicates with hardware, we may have to wait
+ * several milliseconds to get a response. Instead of busy polling in probe,
+ * pulling it out into a delayed work task prevents us from bogging down the
+ * whole system waiting for a response from hardware.
+ */
+void idpf_init_task(struct work_struct *work)
+{
+ struct idpf_vport_config *vport_config;
+ struct idpf_vport_max_q max_q;
+ struct idpf_adapter *adapter;
+ struct idpf_netdev_priv *np;
+ struct idpf_vport *vport;
+ u16 num_default_vports;
+ struct pci_dev *pdev;
+ bool default_vport;
+ int index, err;
+
+ adapter = container_of(work, struct idpf_adapter, init_task.work);
+
+ num_default_vports = idpf_get_default_vports(adapter);
+ if (adapter->num_alloc_vports < num_default_vports)
+ default_vport = true;
+ else
+ default_vport = false;
+
+ err = idpf_vport_alloc_max_qs(adapter, &max_q);
+ if (err)
+ goto unwind_vports;
+
+ err = idpf_send_create_vport_msg(adapter, &max_q);
+ if (err) {
+ idpf_vport_dealloc_max_qs(adapter, &max_q);
+ goto unwind_vports;
+ }
+
+ pdev = adapter->pdev;
+ vport = idpf_vport_alloc(adapter, &max_q);
+ if (!vport) {
+ err = -EFAULT;
+ dev_err(&pdev->dev, "failed to allocate vport: %d\n",
+ err);
+ idpf_vport_dealloc_max_qs(adapter, &max_q);
+ goto unwind_vports;
+ }
+
+ index = vport->idx;
+ vport_config = adapter->vport_config[index];
+
+ init_waitqueue_head(&vport->sw_marker_wq);
+ init_waitqueue_head(&vport->vchnl_wq);
+
+ mutex_init(&vport->vc_buf_lock);
+ spin_lock_init(&vport_config->mac_filter_list_lock);
+
+ INIT_LIST_HEAD(&vport_config->user_config.mac_filter_list);
+
+ err = idpf_check_supported_desc_ids(vport);
+ if (err) {
+ dev_err(&pdev->dev, "failed to get required descriptor ids\n");
+ goto cfg_netdev_err;
+ }
+
+ if (idpf_cfg_netdev(vport))
+ goto cfg_netdev_err;
+
+ err = idpf_send_get_rx_ptype_msg(vport);
+ if (err)
+ goto handle_err;
+
+ /* Once state is put into DOWN, driver is ready for dev_open */
+ np = netdev_priv(vport->netdev);
+ np->state = __IDPF_VPORT_DOWN;
+ if (test_and_clear_bit(IDPF_VPORT_UP_REQUESTED, vport_config->flags))
+ idpf_vport_open(vport, true);
+
+ /* Spawn and return 'idpf_init_task' work queue until all the
+ * default vports are created
+ */
+ if (adapter->num_alloc_vports < num_default_vports) {
+ queue_delayed_work(adapter->init_wq, &adapter->init_task,
+ msecs_to_jiffies(5 * (adapter->pdev->devfn & 0x07)));
+
+ return;
+ }
+
+ for (index = 0; index < adapter->max_vports; index++) {
+ if (adapter->netdevs[index] &&
+ !test_bit(IDPF_VPORT_REG_NETDEV,
+ adapter->vport_config[index]->flags)) {
+ register_netdev(adapter->netdevs[index]);
+ set_bit(IDPF_VPORT_REG_NETDEV,
+ adapter->vport_config[index]->flags);
+ }
+ }
+
+ /* As all the required vports are created, clear the reset flag
+ * unconditionally here in case we were in reset and the link was down.
+ */
+ clear_bit(IDPF_HR_RESET_IN_PROG, adapter->flags);
+ /* Start the statistics task now */
+ queue_delayed_work(adapter->stats_wq, &adapter->stats_task,
+ msecs_to_jiffies(10 * (pdev->devfn & 0x07)));
+
+ return;
+
+handle_err:
+ idpf_decfg_netdev(vport);
+cfg_netdev_err:
+ idpf_vport_rel(vport);
+ adapter->vports[index] = NULL;
+unwind_vports:
+ if (default_vport) {
+ for (index = 0; index < adapter->max_vports; index++) {
+ if (adapter->vports[index])
+ idpf_vport_dealloc(adapter->vports[index]);
+ }
+ }
+ clear_bit(IDPF_HR_RESET_IN_PROG, adapter->flags);
+}
+
+/**
+ * idpf_sriov_ena - Enable or change number of VFs
+ * @adapter: private data struct
+ * @num_vfs: number of VFs to allocate
+ */
+static int idpf_sriov_ena(struct idpf_adapter *adapter, int num_vfs)
+{
+ struct device *dev = &adapter->pdev->dev;
+ int err;
+
+ err = idpf_send_set_sriov_vfs_msg(adapter, num_vfs);
+ if (err) {
+ dev_err(dev, "Failed to allocate VFs: %d\n", err);
+
+ return err;
+ }
+
+ err = pci_enable_sriov(adapter->pdev, num_vfs);
+ if (err) {
+ idpf_send_set_sriov_vfs_msg(adapter, 0);
+ dev_err(dev, "Failed to enable SR-IOV: %d\n", err);
+
+ return err;
+ }
+
+ adapter->num_vfs = num_vfs;
+
+ return num_vfs;
+}
+
+/**
+ * idpf_sriov_configure - Configure the requested VFs
+ * @pdev: pointer to a pci_dev structure
+ * @num_vfs: number of vfs to allocate
+ *
+ * Enable or change the number of VFs. Called when the user updates the number
+ * of VFs in sysfs.
+ **/
+int idpf_sriov_configure(struct pci_dev *pdev, int num_vfs)
+{
+ struct idpf_adapter *adapter = pci_get_drvdata(pdev);
+
+ if (!idpf_is_cap_ena(adapter, IDPF_OTHER_CAPS, VIRTCHNL2_CAP_SRIOV)) {
+ dev_info(&pdev->dev, "SR-IOV is not supported on this device\n");
+
+ return -EOPNOTSUPP;
+ }
+
+ if (num_vfs)
+ return idpf_sriov_ena(adapter, num_vfs);
+
+ if (pci_vfs_assigned(pdev)) {
+ dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs\n");
+
+ return -EBUSY;
+ }
+
+ pci_disable_sriov(adapter->pdev);
+ idpf_send_set_sriov_vfs_msg(adapter, 0);
+ adapter->num_vfs = 0;
+
+ return 0;
+}
+
+/**
+ * idpf_deinit_task - Device deinit routine
+ * @adapter: Driver specific private structure
+ *
+ * Extended remove logic which will be used for
+ * hard reset as well
+ */
+void idpf_deinit_task(struct idpf_adapter *adapter)
+{
+ unsigned int i;
+
+ /* Wait until the init_task is done else this thread might release
+ * the resources first and the other thread might end up in a bad state
+ */
+ cancel_delayed_work_sync(&adapter->init_task);
+
+ if (!adapter->vports)
+ return;
+
+ cancel_delayed_work_sync(&adapter->stats_task);
+
+ for (i = 0; i < adapter->max_vports; i++) {
+ if (adapter->vports[i])
+ idpf_vport_dealloc(adapter->vports[i]);
+ }
+}
+
+/**
+ * idpf_check_reset_complete - check that reset is complete
+ * @hw: pointer to hw struct
+ * @reset_reg: struct with reset registers
+ *
+ * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
+ **/
+static int idpf_check_reset_complete(struct idpf_hw *hw,
+ struct idpf_reset_reg *reset_reg)
+{
+ struct idpf_adapter *adapter = hw->back;
+ int i;
+
+ for (i = 0; i < 2000; i++) {
+ u32 reg_val = readl(reset_reg->rstat);
+
+ /* 0xFFFFFFFF might be read if other side hasn't cleared the
+ * register for us yet and 0xFFFFFFFF is not a valid value for
+ * the register, so treat that as invalid.
+ */
+ if (reg_val != 0xFFFFFFFF && (reg_val & reset_reg->rstat_m))
+ return 0;
+
+ usleep_range(5000, 10000);
+ }
+
+ dev_warn(&adapter->pdev->dev, "Device reset timeout!\n");
+ /* Clear the reset flag unconditionally here since the reset
+ * technically isn't in progress anymore from the driver's perspective
+ */
+ clear_bit(IDPF_HR_RESET_IN_PROG, adapter->flags);
+
+ return -EBUSY;
+}
+
+/**
+ * idpf_set_vport_state - Set the vport state to be after the reset
+ * @adapter: Driver specific private structure
+ */
+static void idpf_set_vport_state(struct idpf_adapter *adapter)
+{
+ u16 i;
+
+ for (i = 0; i < adapter->max_vports; i++) {
+ struct idpf_netdev_priv *np;
+
+ if (!adapter->netdevs[i])
+ continue;
+
+ np = netdev_priv(adapter->netdevs[i]);
+ if (np->state == __IDPF_VPORT_UP)
+ set_bit(IDPF_VPORT_UP_REQUESTED,
+ adapter->vport_config[i]->flags);
+ }
+}
+
+/**
+ * idpf_init_hard_reset - Initiate a hardware reset
+ * @adapter: Driver specific private structure
+ *
+ * Deallocate the vports and all the resources associated with them and
+ * reallocate. Also reinitialize the mailbox. Return 0 on success,
+ * negative on failure.
+ */
+static int idpf_init_hard_reset(struct idpf_adapter *adapter)
+{
+ struct idpf_reg_ops *reg_ops = &adapter->dev_ops.reg_ops;
+ struct device *dev = &adapter->pdev->dev;
+ struct net_device *netdev;
+ int err;
+ u16 i;
+
+ mutex_lock(&adapter->vport_ctrl_lock);
+
+ dev_info(dev, "Device HW Reset initiated\n");
+
+ /* Avoid TX hangs on reset */
+ for (i = 0; i < adapter->max_vports; i++) {
+ netdev = adapter->netdevs[i];
+ if (!netdev)
+ continue;
+
+ netif_carrier_off(netdev);
+ netif_tx_disable(netdev);
+ }
+
+ /* Prepare for reset */
+ if (test_and_clear_bit(IDPF_HR_DRV_LOAD, adapter->flags)) {
+ reg_ops->trigger_reset(adapter, IDPF_HR_DRV_LOAD);
+ } else if (test_and_clear_bit(IDPF_HR_FUNC_RESET, adapter->flags)) {
+ bool is_reset = idpf_is_reset_detected(adapter);
+
+ idpf_set_vport_state(adapter);
+ idpf_vc_core_deinit(adapter);
+ if (!is_reset)
+ reg_ops->trigger_reset(adapter, IDPF_HR_FUNC_RESET);
+ idpf_deinit_dflt_mbx(adapter);
+ } else {
+ dev_err(dev, "Unhandled hard reset cause\n");
+ err = -EBADRQC;
+ goto unlock_mutex;
+ }
+
+ /* Wait for reset to complete */
+ err = idpf_check_reset_complete(&adapter->hw, &adapter->reset_reg);
+ if (err) {
+ dev_err(dev, "The driver was unable to contact the device's firmware. Check that the FW is running. Driver state= 0x%x\n",
+ adapter->state);
+ goto unlock_mutex;
+ }
+
+ /* Reset is complete and so start building the driver resources again */
+ err = idpf_init_dflt_mbx(adapter);
+ if (err) {
+ dev_err(dev, "Failed to initialize default mailbox: %d\n", err);
+ goto unlock_mutex;
+ }
+
+ /* Initialize the state machine, also allocate memory and request
+ * resources
+ */
+ err = idpf_vc_core_init(adapter);
+ if (err) {
+ idpf_deinit_dflt_mbx(adapter);
+ goto unlock_mutex;
+ }
+
+ /* Wait till all the vports are initialized to release the reset lock,
+ * else user space callbacks may access uninitialized vports
+ */
+ while (test_bit(IDPF_HR_RESET_IN_PROG, adapter->flags))
+ msleep(100);
+
+unlock_mutex:
+ mutex_unlock(&adapter->vport_ctrl_lock);
+
+ return err;
+}
+
+/**
+ * idpf_vc_event_task - Handle virtchannel event logic
+ * @work: work queue struct
+ */
+void idpf_vc_event_task(struct work_struct *work)
+{
+ struct idpf_adapter *adapter;
+
+ adapter = container_of(work, struct idpf_adapter, vc_event_task.work);
+
+ if (test_bit(IDPF_REMOVE_IN_PROG, adapter->flags))
+ return;
+
+ if (test_bit(IDPF_HR_FUNC_RESET, adapter->flags) ||
+ test_bit(IDPF_HR_DRV_LOAD, adapter->flags)) {
+ set_bit(IDPF_HR_RESET_IN_PROG, adapter->flags);
+ idpf_init_hard_reset(adapter);
+ }
+}
+
+/**
+ * idpf_initiate_soft_reset - Initiate a software reset
+ * @vport: virtual port data struct
+ * @reset_cause: reason for the soft reset
+ *
+ * Soft reset only reallocs vport queue resources. Returns 0 on success,
+ * negative on failure.
+ */
+int idpf_initiate_soft_reset(struct idpf_vport *vport,
+ enum idpf_vport_reset_cause reset_cause)
+{
+ struct idpf_netdev_priv *np = netdev_priv(vport->netdev);
+ enum idpf_vport_state current_state = np->state;
+ struct idpf_adapter *adapter = vport->adapter;
+ struct idpf_vport *new_vport;
+ int err, i;
+
+ /* If the system is low on memory, we can end up in bad state if we
+ * free all the memory for queue resources and try to allocate them
+ * again. Instead, we can pre-allocate the new resources before doing
+ * anything and bailing if the alloc fails.
+ *
+ * Make a clone of the existing vport to mimic its current
+ * configuration, then modify the new structure with any requested
+ * changes. Once the allocation of the new resources is done, stop the
+ * existing vport and copy the configuration to the main vport. If an
+ * error occurred, the existing vport will be untouched.
+ *
+ */
+ new_vport = kzalloc(sizeof(*vport), GFP_KERNEL);
+ if (!new_vport)
+ return -ENOMEM;
+
+ /* This purposely avoids copying the end of the struct because it
+ * contains wait_queues and mutexes and other stuff we don't want to
+ * mess with. Nothing below should use those variables from new_vport
+ * and should instead always refer to them in vport if they need to.
+ */
+ memcpy(new_vport, vport, offsetof(struct idpf_vport, vc_state));
+
+ /* Adjust resource parameters prior to reallocating resources */
+ switch (reset_cause) {
+ case IDPF_SR_Q_CHANGE:
+ err = idpf_vport_adjust_qs(new_vport);
+ if (err)
+ goto free_vport;
+ break;
+ case IDPF_SR_Q_DESC_CHANGE:
+ /* Update queue parameters before allocating resources */
+ idpf_vport_calc_num_q_desc(new_vport);
+ break;
+ case IDPF_SR_MTU_CHANGE:
+ case IDPF_SR_RSC_CHANGE:
+ break;
+ default:
+ dev_err(&adapter->pdev->dev, "Unhandled soft reset cause\n");
+ err = -EINVAL;
+ goto free_vport;
+ }
+
+ err = idpf_vport_queues_alloc(new_vport);
+ if (err)
+ goto free_vport;
+ if (current_state <= __IDPF_VPORT_DOWN) {
+ idpf_send_delete_queues_msg(vport);
+ } else {
+ set_bit(IDPF_VPORT_DEL_QUEUES, vport->flags);
+ idpf_vport_stop(vport);
+ }
+
+ idpf_deinit_rss(vport);
+ /* We're passing in vport here because we need its wait_queue
+ * to send a message and it should be getting all the vport
+ * config data out of the adapter but we need to be careful not
+ * to add code to add_queues to change the vport config within
+ * vport itself as it will be wiped with a memcpy later.
+ */
+ err = idpf_send_add_queues_msg(vport, new_vport->num_txq,
+ new_vport->num_complq,
+ new_vport->num_rxq,
+ new_vport->num_bufq);
+ if (err)
+ goto err_reset;
+
+ /* Same comment as above regarding avoiding copying the wait_queues and
+ * mutexes applies here. We do not want to mess with those if possible.
+ */
+ memcpy(vport, new_vport, offsetof(struct idpf_vport, vc_state));
+
+ /* Since idpf_vport_queues_alloc was called with new_port, the queue
+ * back pointers are currently pointing to the local new_vport. Reset
+ * the backpointers to the original vport here
+ */
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *tx_qgrp = &vport->txq_grps[i];
+ int j;
+
+ tx_qgrp->vport = vport;
+ for (j = 0; j < tx_qgrp->num_txq; j++)
+ tx_qgrp->txqs[j]->vport = vport;
+
+ if (idpf_is_queue_model_split(vport->txq_model))
+ tx_qgrp->complq->vport = vport;
+ }
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+ struct idpf_queue *q;
+ u16 num_rxq;
+ int j;
+
+ rx_qgrp->vport = vport;
+ for (j = 0; j < vport->num_bufqs_per_qgrp; j++)
+ rx_qgrp->splitq.bufq_sets[j].bufq.vport = vport;
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ num_rxq = rx_qgrp->splitq.num_rxq_sets;
+ else
+ num_rxq = rx_qgrp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq; j++) {
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ q = &rx_qgrp->splitq.rxq_sets[j]->rxq;
+ else
+ q = rx_qgrp->singleq.rxqs[j];
+ q->vport = vport;
+ }
+ }
+
+ if (reset_cause == IDPF_SR_Q_CHANGE)
+ idpf_vport_alloc_vec_indexes(vport);
+
+ err = idpf_set_real_num_queues(vport);
+ if (err)
+ goto err_reset;
+
+ if (current_state == __IDPF_VPORT_UP)
+ err = idpf_vport_open(vport, false);
+
+ kfree(new_vport);
+
+ return err;
+
+err_reset:
+ idpf_vport_queues_rel(new_vport);
+free_vport:
+ kfree(new_vport);
+
+ return err;
+}
+
+/**
+ * idpf_addr_sync - Callback for dev_(mc|uc)_sync to add address
+ * @netdev: the netdevice
+ * @addr: address to add
+ *
+ * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
+ * __dev_(uc|mc)_sync from .set_rx_mode. Kernel takes addr_list_lock spinlock
+ * meaning we cannot sleep in this context. Due to this, we have to add the
+ * filter and send the virtchnl message asynchronously without waiting for the
+ * response from the other side. We won't know whether or not the operation
+ * actually succeeded until we get the message back. Returns 0 on success,
+ * negative on failure.
+ */
+static int idpf_addr_sync(struct net_device *netdev, const u8 *addr)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+
+ return idpf_add_mac_filter(np->vport, np, addr, true);
+}
+
+/**
+ * idpf_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
+ * @netdev: the netdevice
+ * @addr: address to add
+ *
+ * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
+ * __dev_(uc|mc)_sync from .set_rx_mode. Kernel takes addr_list_lock spinlock
+ * meaning we cannot sleep in this context. Due to this we have to delete the
+ * filter and send the virtchnl message asynchronously without waiting for the
+ * return from the other side. We won't know whether or not the operation
+ * actually succeeded until we get the message back. Returns 0 on success,
+ * negative on failure.
+ */
+static int idpf_addr_unsync(struct net_device *netdev, const u8 *addr)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+
+ /* Under some circumstances, we might receive a request to delete
+ * our own device address from our uc list. Because we store the
+ * device address in the VSI's MAC filter list, we need to ignore
+ * such requests and not delete our device address from this list.
+ */
+ if (ether_addr_equal(addr, netdev->dev_addr))
+ return 0;
+
+ idpf_del_mac_filter(np->vport, np, addr, true);
+
+ return 0;
+}
+
+/**
+ * idpf_set_rx_mode - NDO callback to set the netdev filters
+ * @netdev: network interface device structure
+ *
+ * Stack takes addr_list_lock spinlock before calling our .set_rx_mode. We
+ * cannot sleep in this context.
+ */
+static void idpf_set_rx_mode(struct net_device *netdev)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport_user_config_data *config_data;
+ struct idpf_adapter *adapter;
+ bool changed = false;
+ struct device *dev;
+ int err;
+
+ adapter = np->adapter;
+ dev = &adapter->pdev->dev;
+
+ if (idpf_is_cap_ena(adapter, IDPF_OTHER_CAPS, VIRTCHNL2_CAP_MACFILTER)) {
+ __dev_uc_sync(netdev, idpf_addr_sync, idpf_addr_unsync);
+ __dev_mc_sync(netdev, idpf_addr_sync, idpf_addr_unsync);
+ }
+
+ if (!idpf_is_cap_ena(adapter, IDPF_OTHER_CAPS, VIRTCHNL2_CAP_PROMISC))
+ return;
+
+ config_data = &adapter->vport_config[np->vport_idx]->user_config;
+ /* IFF_PROMISC enables both unicast and multicast promiscuous,
+ * while IFF_ALLMULTI only enables multicast such that:
+ *
+ * promisc + allmulti = unicast | multicast
+ * promisc + !allmulti = unicast | multicast
+ * !promisc + allmulti = multicast
+ */
+ if ((netdev->flags & IFF_PROMISC) &&
+ !test_and_set_bit(__IDPF_PROMISC_UC, config_data->user_flags)) {
+ changed = true;
+ dev_info(&adapter->pdev->dev, "Entering promiscuous mode\n");
+ if (!test_and_set_bit(__IDPF_PROMISC_MC, adapter->flags))
+ dev_info(dev, "Entering multicast promiscuous mode\n");
+ }
+
+ if (!(netdev->flags & IFF_PROMISC) &&
+ test_and_clear_bit(__IDPF_PROMISC_UC, config_data->user_flags)) {
+ changed = true;
+ dev_info(dev, "Leaving promiscuous mode\n");
+ }
+
+ if (netdev->flags & IFF_ALLMULTI &&
+ !test_and_set_bit(__IDPF_PROMISC_MC, config_data->user_flags)) {
+ changed = true;
+ dev_info(dev, "Entering multicast promiscuous mode\n");
+ }
+
+ if (!(netdev->flags & (IFF_ALLMULTI | IFF_PROMISC)) &&
+ test_and_clear_bit(__IDPF_PROMISC_MC, config_data->user_flags)) {
+ changed = true;
+ dev_info(dev, "Leaving multicast promiscuous mode\n");
+ }
+
+ if (!changed)
+ return;
+
+ err = idpf_set_promiscuous(adapter, config_data, np->vport_id);
+ if (err)
+ dev_err(dev, "Failed to set promiscuous mode: %d\n", err);
+}
+
+/**
+ * idpf_vport_manage_rss_lut - disable/enable RSS
+ * @vport: the vport being changed
+ *
+ * In the event of disable request for RSS, this function will zero out RSS
+ * LUT, while in the event of enable request for RSS, it will reconfigure RSS
+ * LUT with the default LUT configuration.
+ */
+static int idpf_vport_manage_rss_lut(struct idpf_vport *vport)
+{
+ bool ena = idpf_is_feature_ena(vport, NETIF_F_RXHASH);
+ struct idpf_rss_data *rss_data;
+ u16 idx = vport->idx;
+ int lut_size;
+
+ rss_data = &vport->adapter->vport_config[idx]->user_config.rss_data;
+ lut_size = rss_data->rss_lut_size * sizeof(u32);
+
+ if (ena) {
+ /* This will contain the default or user configured LUT */
+ memcpy(rss_data->rss_lut, rss_data->cached_lut, lut_size);
+ } else {
+ /* Save a copy of the current LUT to be restored later if
+ * requested.
+ */
+ memcpy(rss_data->cached_lut, rss_data->rss_lut, lut_size);
+
+ /* Zero out the current LUT to disable */
+ memset(rss_data->rss_lut, 0, lut_size);
+ }
+
+ return idpf_config_rss(vport);
+}
+
+/**
+ * idpf_set_features - set the netdev feature flags
+ * @netdev: ptr to the netdev being adjusted
+ * @features: the feature set that the stack is suggesting
+ */
+static int idpf_set_features(struct net_device *netdev,
+ netdev_features_t features)
+{
+ netdev_features_t changed = netdev->features ^ features;
+ struct idpf_adapter *adapter;
+ struct idpf_vport *vport;
+ int err = 0;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ adapter = vport->adapter;
+
+ if (idpf_is_reset_in_prog(adapter)) {
+ dev_err(&adapter->pdev->dev, "Device is resetting, changing netdev features temporarily unavailable.\n");
+ err = -EBUSY;
+ goto unlock_mutex;
+ }
+
+ if (changed & NETIF_F_RXHASH) {
+ netdev->features ^= NETIF_F_RXHASH;
+ err = idpf_vport_manage_rss_lut(vport);
+ if (err)
+ goto unlock_mutex;
+ }
+
+ if (changed & NETIF_F_GRO_HW) {
+ netdev->features ^= NETIF_F_GRO_HW;
+ err = idpf_initiate_soft_reset(vport, IDPF_SR_RSC_CHANGE);
+ if (err)
+ goto unlock_mutex;
+ }
+
+ if (changed & NETIF_F_LOOPBACK) {
+ netdev->features ^= NETIF_F_LOOPBACK;
+ err = idpf_send_ena_dis_loopback_msg(vport);
+ }
+
+unlock_mutex:
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * idpf_open - Called when a network interface becomes active
+ * @netdev: network interface device structure
+ *
+ * The open entry point is called when a network interface is made
+ * active by the system (IFF_UP). At this point all resources needed
+ * for transmit and receive operations are allocated, the interrupt
+ * handler is registered with the OS, the netdev watchdog is enabled,
+ * and the stack is notified that the interface is ready.
+ *
+ * Returns 0 on success, negative value on failure
+ */
+static int idpf_open(struct net_device *netdev)
+{
+ struct idpf_vport *vport;
+ int err;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ err = idpf_vport_open(vport, true);
+
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * idpf_change_mtu - NDO callback to change the MTU
+ * @netdev: network interface device structure
+ * @new_mtu: new value for maximum frame size
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ struct idpf_vport *vport;
+ int err;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ netdev->mtu = new_mtu;
+
+ err = idpf_initiate_soft_reset(vport, IDPF_SR_MTU_CHANGE);
+
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * idpf_features_check - Validate packet conforms to limits
+ * @skb: skb buffer
+ * @netdev: This port's netdev
+ * @features: Offload features that the stack believes apply
+ */
+static netdev_features_t idpf_features_check(struct sk_buff *skb,
+ struct net_device *netdev,
+ netdev_features_t features)
+{
+ struct idpf_vport *vport = idpf_netdev_to_vport(netdev);
+ struct idpf_adapter *adapter = vport->adapter;
+ size_t len;
+
+ /* No point in doing any of this if neither checksum nor GSO are
+ * being requested for this frame. We can rule out both by just
+ * checking for CHECKSUM_PARTIAL
+ */
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ return features;
+
+ /* We cannot support GSO if the MSS is going to be less than
+ * 88 bytes. If it is then we need to drop support for GSO.
+ */
+ if (skb_is_gso(skb) &&
+ (skb_shinfo(skb)->gso_size < IDPF_TX_TSO_MIN_MSS))
+ features &= ~NETIF_F_GSO_MASK;
+
+ /* Ensure MACLEN is <= 126 bytes (63 words) and not an odd size */
+ len = skb_network_offset(skb);
+ if (unlikely(len & ~(126)))
+ goto unsupported;
+
+ len = skb_network_header_len(skb);
+ if (unlikely(len > idpf_get_max_tx_hdr_size(adapter)))
+ goto unsupported;
+
+ if (!skb->encapsulation)
+ return features;
+
+ /* L4TUNLEN can support 127 words */
+ len = skb_inner_network_header(skb) - skb_transport_header(skb);
+ if (unlikely(len & ~(127 * 2)))
+ goto unsupported;
+
+ /* IPLEN can support at most 127 dwords */
+ len = skb_inner_network_header_len(skb);
+ if (unlikely(len > idpf_get_max_tx_hdr_size(adapter)))
+ goto unsupported;
+
+ /* No need to validate L4LEN as TCP is the only protocol with a
+ * a flexible value and we support all possible values supported
+ * by TCP, which is at most 15 dwords
+ */
+
+ return features;
+
+unsupported:
+ return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
+}
+
+/**
+ * idpf_set_mac - NDO callback to set port mac address
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int idpf_set_mac(struct net_device *netdev, void *p)
+{
+ struct idpf_netdev_priv *np = netdev_priv(netdev);
+ struct idpf_vport_config *vport_config;
+ struct sockaddr *addr = p;
+ struct idpf_vport *vport;
+ int err = 0;
+
+ idpf_vport_ctrl_lock(netdev);
+ vport = idpf_netdev_to_vport(netdev);
+
+ if (!idpf_is_cap_ena(vport->adapter, IDPF_OTHER_CAPS,
+ VIRTCHNL2_CAP_MACFILTER)) {
+ dev_info(&vport->adapter->pdev->dev, "Setting MAC address is not supported\n");
+ err = -EOPNOTSUPP;
+ goto unlock_mutex;
+ }
+
+ if (!is_valid_ether_addr(addr->sa_data)) {
+ dev_info(&vport->adapter->pdev->dev, "Invalid MAC address: %pM\n",
+ addr->sa_data);
+ err = -EADDRNOTAVAIL;
+ goto unlock_mutex;
+ }
+
+ if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
+ goto unlock_mutex;
+
+ vport_config = vport->adapter->vport_config[vport->idx];
+ err = idpf_add_mac_filter(vport, np, addr->sa_data, false);
+ if (err) {
+ __idpf_del_mac_filter(vport_config, addr->sa_data);
+ goto unlock_mutex;
+ }
+
+ if (is_valid_ether_addr(vport->default_mac_addr))
+ idpf_del_mac_filter(vport, np, vport->default_mac_addr, false);
+
+ ether_addr_copy(vport->default_mac_addr, addr->sa_data);
+ eth_hw_addr_set(netdev, addr->sa_data);
+
+unlock_mutex:
+ idpf_vport_ctrl_unlock(netdev);
+
+ return err;
+}
+
+/**
+ * idpf_alloc_dma_mem - Allocate dma memory
+ * @hw: pointer to hw struct
+ * @mem: pointer to dma_mem struct
+ * @size: size of the memory to allocate
+ */
+void *idpf_alloc_dma_mem(struct idpf_hw *hw, struct idpf_dma_mem *mem, u64 size)
+{
+ struct idpf_adapter *adapter = hw->back;
+ size_t sz = ALIGN(size, 4096);
+
+ mem->va = dma_alloc_coherent(&adapter->pdev->dev, sz,
+ &mem->pa, GFP_KERNEL);
+ mem->size = sz;
+
+ return mem->va;
+}
+
+/**
+ * idpf_free_dma_mem - Free the allocated dma memory
+ * @hw: pointer to hw struct
+ * @mem: pointer to dma_mem struct
+ */
+void idpf_free_dma_mem(struct idpf_hw *hw, struct idpf_dma_mem *mem)
+{
+ struct idpf_adapter *adapter = hw->back;
+
+ dma_free_coherent(&adapter->pdev->dev, mem->size,
+ mem->va, mem->pa);
+ mem->size = 0;
+ mem->va = NULL;
+ mem->pa = 0;
+}
+
+static const struct net_device_ops idpf_netdev_ops_splitq = {
+ .ndo_open = idpf_open,
+ .ndo_stop = idpf_stop,
+ .ndo_start_xmit = idpf_tx_splitq_start,
+ .ndo_features_check = idpf_features_check,
+ .ndo_set_rx_mode = idpf_set_rx_mode,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = idpf_set_mac,
+ .ndo_change_mtu = idpf_change_mtu,
+ .ndo_get_stats64 = idpf_get_stats64,
+ .ndo_set_features = idpf_set_features,
+ .ndo_tx_timeout = idpf_tx_timeout,
+};
+
+static const struct net_device_ops idpf_netdev_ops_singleq = {
+ .ndo_open = idpf_open,
+ .ndo_stop = idpf_stop,
+ .ndo_start_xmit = idpf_tx_singleq_start,
+ .ndo_features_check = idpf_features_check,
+ .ndo_set_rx_mode = idpf_set_rx_mode,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = idpf_set_mac,
+ .ndo_change_mtu = idpf_change_mtu,
+ .ndo_get_stats64 = idpf_get_stats64,
+ .ndo_set_features = idpf_set_features,
+ .ndo_tx_timeout = idpf_tx_timeout,
+};
diff --git a/drivers/net/ethernet/intel/idpf/idpf_main.c b/drivers/net/ethernet/intel/idpf/idpf_main.c
new file mode 100644
index 0000000..e1febc7
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_main.c
@@ -0,0 +1,279 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf.h"
+#include "idpf_devids.h"
+
+#define DRV_SUMMARY "Intel(R) Infrastructure Data Path Function Linux Driver"
+
+MODULE_DESCRIPTION(DRV_SUMMARY);
+MODULE_LICENSE("GPL");
+
+/**
+ * idpf_remove - Device removal routine
+ * @pdev: PCI device information struct
+ */
+static void idpf_remove(struct pci_dev *pdev)
+{
+ struct idpf_adapter *adapter = pci_get_drvdata(pdev);
+ int i;
+
+ set_bit(IDPF_REMOVE_IN_PROG, adapter->flags);
+
+ /* Wait until vc_event_task is done to consider if any hard reset is
+ * in progress else we may go ahead and release the resources but the
+ * thread doing the hard reset might continue the init path and
+ * end up in bad state.
+ */
+ cancel_delayed_work_sync(&adapter->vc_event_task);
+ if (adapter->num_vfs)
+ idpf_sriov_configure(pdev, 0);
+
+ idpf_vc_core_deinit(adapter);
+ /* Be a good citizen and leave the device clean on exit */
+ adapter->dev_ops.reg_ops.trigger_reset(adapter, IDPF_HR_FUNC_RESET);
+ idpf_deinit_dflt_mbx(adapter);
+
+ if (!adapter->netdevs)
+ goto destroy_wqs;
+
+ /* There are some cases where it's possible to still have netdevs
+ * registered with the stack at this point, e.g. if the driver detected
+ * a HW reset and rmmod is called before it fully recovers. Unregister
+ * any stale netdevs here.
+ */
+ for (i = 0; i < adapter->max_vports; i++) {
+ if (!adapter->netdevs[i])
+ continue;
+ if (adapter->netdevs[i]->reg_state != NETREG_UNINITIALIZED)
+ unregister_netdev(adapter->netdevs[i]);
+ free_netdev(adapter->netdevs[i]);
+ adapter->netdevs[i] = NULL;
+ }
+
+destroy_wqs:
+ destroy_workqueue(adapter->init_wq);
+ destroy_workqueue(adapter->serv_wq);
+ destroy_workqueue(adapter->mbx_wq);
+ destroy_workqueue(adapter->stats_wq);
+ destroy_workqueue(adapter->vc_event_wq);
+
+ for (i = 0; i < adapter->max_vports; i++) {
+ kfree(adapter->vport_config[i]);
+ adapter->vport_config[i] = NULL;
+ }
+ kfree(adapter->vport_config);
+ adapter->vport_config = NULL;
+ kfree(adapter->netdevs);
+ adapter->netdevs = NULL;
+
+ mutex_destroy(&adapter->vport_ctrl_lock);
+ mutex_destroy(&adapter->vector_lock);
+ mutex_destroy(&adapter->queue_lock);
+ mutex_destroy(&adapter->vc_buf_lock);
+
+ pci_set_drvdata(pdev, NULL);
+ kfree(adapter);
+}
+
+/**
+ * idpf_shutdown - PCI callback for shutting down device
+ * @pdev: PCI device information struct
+ */
+static void idpf_shutdown(struct pci_dev *pdev)
+{
+ idpf_remove(pdev);
+
+ if (system_state == SYSTEM_POWER_OFF)
+ pci_set_power_state(pdev, PCI_D3hot);
+}
+
+/**
+ * idpf_cfg_hw - Initialize HW struct
+ * @adapter: adapter to setup hw struct for
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_cfg_hw(struct idpf_adapter *adapter)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ struct idpf_hw *hw = &adapter->hw;
+
+ hw->hw_addr = pcim_iomap_table(pdev)[0];
+ if (!hw->hw_addr) {
+ pci_err(pdev, "failed to allocate PCI iomap table\n");
+
+ return -ENOMEM;
+ }
+
+ hw->back = adapter;
+
+ return 0;
+}
+
+/**
+ * idpf_probe - Device initialization routine
+ * @pdev: PCI device information struct
+ * @ent: entry in idpf_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct device *dev = &pdev->dev;
+ struct idpf_adapter *adapter;
+ int err;
+
+ adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
+ if (!adapter)
+ return -ENOMEM;
+
+ adapter->req_tx_splitq = true;
+ adapter->req_rx_splitq = true;
+
+ switch (ent->device) {
+ case IDPF_DEV_ID_PF:
+ idpf_dev_ops_init(adapter);
+ break;
+ case IDPF_DEV_ID_VF:
+ idpf_vf_dev_ops_init(adapter);
+ adapter->crc_enable = true;
+ break;
+ default:
+ err = -ENODEV;
+ dev_err(&pdev->dev, "Unexpected dev ID 0x%x in idpf probe\n",
+ ent->device);
+ goto err_free;
+ }
+
+ adapter->pdev = pdev;
+ err = pcim_enable_device(pdev);
+ if (err)
+ goto err_free;
+
+ err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
+ if (err) {
+ pci_err(pdev, "pcim_iomap_regions failed %pe\n", ERR_PTR(err));
+
+ goto err_free;
+ }
+
+ /* set up for high or low dma */
+ err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
+ if (err) {
+ pci_err(pdev, "DMA configuration failed: %pe\n", ERR_PTR(err));
+
+ goto err_free;
+ }
+
+ pci_set_master(pdev);
+ pci_set_drvdata(pdev, adapter);
+
+ adapter->init_wq = alloc_workqueue("%s-%s-init", 0, 0,
+ dev_driver_string(dev),
+ dev_name(dev));
+ if (!adapter->init_wq) {
+ dev_err(dev, "Failed to allocate init workqueue\n");
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ adapter->serv_wq = alloc_workqueue("%s-%s-service", 0, 0,
+ dev_driver_string(dev),
+ dev_name(dev));
+ if (!adapter->serv_wq) {
+ dev_err(dev, "Failed to allocate service workqueue\n");
+ err = -ENOMEM;
+ goto err_serv_wq_alloc;
+ }
+
+ adapter->mbx_wq = alloc_workqueue("%s-%s-mbx", 0, 0,
+ dev_driver_string(dev),
+ dev_name(dev));
+ if (!adapter->mbx_wq) {
+ dev_err(dev, "Failed to allocate mailbox workqueue\n");
+ err = -ENOMEM;
+ goto err_mbx_wq_alloc;
+ }
+
+ adapter->stats_wq = alloc_workqueue("%s-%s-stats", 0, 0,
+ dev_driver_string(dev),
+ dev_name(dev));
+ if (!adapter->stats_wq) {
+ dev_err(dev, "Failed to allocate workqueue\n");
+ err = -ENOMEM;
+ goto err_stats_wq_alloc;
+ }
+
+ adapter->vc_event_wq = alloc_workqueue("%s-%s-vc_event", 0, 0,
+ dev_driver_string(dev),
+ dev_name(dev));
+ if (!adapter->vc_event_wq) {
+ dev_err(dev, "Failed to allocate virtchnl event workqueue\n");
+ err = -ENOMEM;
+ goto err_vc_event_wq_alloc;
+ }
+
+ /* setup msglvl */
+ adapter->msg_enable = netif_msg_init(-1, IDPF_AVAIL_NETIF_M);
+
+ err = idpf_cfg_hw(adapter);
+ if (err) {
+ dev_err(dev, "Failed to configure HW structure for adapter: %d\n",
+ err);
+ goto err_cfg_hw;
+ }
+
+ mutex_init(&adapter->vport_ctrl_lock);
+ mutex_init(&adapter->vector_lock);
+ mutex_init(&adapter->queue_lock);
+ mutex_init(&adapter->vc_buf_lock);
+
+ init_waitqueue_head(&adapter->vchnl_wq);
+
+ INIT_DELAYED_WORK(&adapter->init_task, idpf_init_task);
+ INIT_DELAYED_WORK(&adapter->serv_task, idpf_service_task);
+ INIT_DELAYED_WORK(&adapter->mbx_task, idpf_mbx_task);
+ INIT_DELAYED_WORK(&adapter->stats_task, idpf_statistics_task);
+ INIT_DELAYED_WORK(&adapter->vc_event_task, idpf_vc_event_task);
+
+ adapter->dev_ops.reg_ops.reset_reg_init(adapter);
+ set_bit(IDPF_HR_DRV_LOAD, adapter->flags);
+ queue_delayed_work(adapter->vc_event_wq, &adapter->vc_event_task,
+ msecs_to_jiffies(10 * (pdev->devfn & 0x07)));
+
+ return 0;
+
+err_cfg_hw:
+ destroy_workqueue(adapter->vc_event_wq);
+err_vc_event_wq_alloc:
+ destroy_workqueue(adapter->stats_wq);
+err_stats_wq_alloc:
+ destroy_workqueue(adapter->mbx_wq);
+err_mbx_wq_alloc:
+ destroy_workqueue(adapter->serv_wq);
+err_serv_wq_alloc:
+ destroy_workqueue(adapter->init_wq);
+err_free:
+ kfree(adapter);
+ return err;
+}
+
+/* idpf_pci_tbl - PCI Dev idpf ID Table
+ */
+static const struct pci_device_id idpf_pci_tbl[] = {
+ { PCI_VDEVICE(INTEL, IDPF_DEV_ID_PF)},
+ { PCI_VDEVICE(INTEL, IDPF_DEV_ID_VF)},
+ { /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(pci, idpf_pci_tbl);
+
+static struct pci_driver idpf_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = idpf_pci_tbl,
+ .probe = idpf_probe,
+ .sriov_configure = idpf_sriov_configure,
+ .remove = idpf_remove,
+ .shutdown = idpf_shutdown,
+};
+module_pci_driver(idpf_driver);
diff --git a/drivers/net/ethernet/intel/idpf/idpf_mem.h b/drivers/net/ethernet/intel/idpf/idpf_mem.h
new file mode 100644
index 0000000..b21a04f
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_mem.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_MEM_H_
+#define _IDPF_MEM_H_
+
+#include <linux/io.h>
+
+struct idpf_dma_mem {
+ void *va;
+ dma_addr_t pa;
+ size_t size;
+};
+
+#define wr32(a, reg, value) writel((value), ((a)->hw_addr + (reg)))
+#define rd32(a, reg) readl((a)->hw_addr + (reg))
+#define wr64(a, reg, value) writeq((value), ((a)->hw_addr + (reg)))
+#define rd64(a, reg) readq((a)->hw_addr + (reg))
+
+#endif /* _IDPF_MEM_H_ */
diff --git a/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c b/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c
new file mode 100644
index 0000000..81288a1
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c
@@ -0,0 +1,1183 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf.h"
+
+/**
+ * idpf_tx_singleq_csum - Enable tx checksum offloads
+ * @skb: pointer to skb
+ * @off: pointer to struct that holds offload parameters
+ *
+ * Returns 0 or error (negative) if checksum offload cannot be executed, 1
+ * otherwise.
+ */
+static int idpf_tx_singleq_csum(struct sk_buff *skb,
+ struct idpf_tx_offload_params *off)
+{
+ u32 l4_len, l3_len, l2_len;
+ union {
+ struct iphdr *v4;
+ struct ipv6hdr *v6;
+ unsigned char *hdr;
+ } ip;
+ union {
+ struct tcphdr *tcp;
+ unsigned char *hdr;
+ } l4;
+ u32 offset, cmd = 0;
+ u8 l4_proto = 0;
+ __be16 frag_off;
+ bool is_tso;
+
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ return 0;
+
+ ip.hdr = skb_network_header(skb);
+ l4.hdr = skb_transport_header(skb);
+
+ /* compute outer L2 header size */
+ l2_len = ip.hdr - skb->data;
+ offset = FIELD_PREP(0x3F << IDPF_TX_DESC_LEN_MACLEN_S, l2_len / 2);
+ is_tso = !!(off->tx_flags & IDPF_TX_FLAGS_TSO);
+ if (skb->encapsulation) {
+ u32 tunnel = 0;
+
+ /* define outer network header type */
+ if (off->tx_flags & IDPF_TX_FLAGS_IPV4) {
+ /* The stack computes the IP header already, the only
+ * time we need the hardware to recompute it is in the
+ * case of TSO.
+ */
+ tunnel |= is_tso ?
+ IDPF_TX_CTX_EXT_IP_IPV4 :
+ IDPF_TX_CTX_EXT_IP_IPV4_NO_CSUM;
+
+ l4_proto = ip.v4->protocol;
+ } else if (off->tx_flags & IDPF_TX_FLAGS_IPV6) {
+ tunnel |= IDPF_TX_CTX_EXT_IP_IPV6;
+
+ l4_proto = ip.v6->nexthdr;
+ if (ipv6_ext_hdr(l4_proto))
+ ipv6_skip_exthdr(skb, skb_network_offset(skb) +
+ sizeof(*ip.v6),
+ &l4_proto, &frag_off);
+ }
+
+ /* define outer transport */
+ switch (l4_proto) {
+ case IPPROTO_UDP:
+ tunnel |= IDPF_TXD_CTX_UDP_TUNNELING;
+ break;
+ case IPPROTO_GRE:
+ tunnel |= IDPF_TXD_CTX_GRE_TUNNELING;
+ break;
+ case IPPROTO_IPIP:
+ case IPPROTO_IPV6:
+ l4.hdr = skb_inner_network_header(skb);
+ break;
+ default:
+ if (is_tso)
+ return -1;
+
+ skb_checksum_help(skb);
+
+ return 0;
+ }
+ off->tx_flags |= IDPF_TX_FLAGS_TUNNEL;
+
+ /* compute outer L3 header size */
+ tunnel |= FIELD_PREP(IDPF_TXD_CTX_QW0_TUNN_EXT_IPLEN_M,
+ (l4.hdr - ip.hdr) / 4);
+
+ /* switch IP header pointer from outer to inner header */
+ ip.hdr = skb_inner_network_header(skb);
+
+ /* compute tunnel header size */
+ tunnel |= FIELD_PREP(IDPF_TXD_CTX_QW0_TUNN_NATLEN_M,
+ (ip.hdr - l4.hdr) / 2);
+
+ /* indicate if we need to offload outer UDP header */
+ if (is_tso &&
+ !(skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) &&
+ (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM))
+ tunnel |= IDPF_TXD_CTX_QW0_TUNN_L4T_CS_M;
+
+ /* record tunnel offload values */
+ off->cd_tunneling |= tunnel;
+
+ /* switch L4 header pointer from outer to inner */
+ l4.hdr = skb_inner_transport_header(skb);
+ l4_proto = 0;
+
+ /* reset type as we transition from outer to inner headers */
+ off->tx_flags &= ~(IDPF_TX_FLAGS_IPV4 | IDPF_TX_FLAGS_IPV6);
+ if (ip.v4->version == 4)
+ off->tx_flags |= IDPF_TX_FLAGS_IPV4;
+ if (ip.v6->version == 6)
+ off->tx_flags |= IDPF_TX_FLAGS_IPV6;
+ }
+
+ /* Enable IP checksum offloads */
+ if (off->tx_flags & IDPF_TX_FLAGS_IPV4) {
+ l4_proto = ip.v4->protocol;
+ /* See comment above regarding need for HW to recompute IP
+ * header checksum in the case of TSO.
+ */
+ if (is_tso)
+ cmd |= IDPF_TX_DESC_CMD_IIPT_IPV4_CSUM;
+ else
+ cmd |= IDPF_TX_DESC_CMD_IIPT_IPV4;
+
+ } else if (off->tx_flags & IDPF_TX_FLAGS_IPV6) {
+ cmd |= IDPF_TX_DESC_CMD_IIPT_IPV6;
+ l4_proto = ip.v6->nexthdr;
+ if (ipv6_ext_hdr(l4_proto))
+ ipv6_skip_exthdr(skb, skb_network_offset(skb) +
+ sizeof(*ip.v6), &l4_proto,
+ &frag_off);
+ } else {
+ return -1;
+ }
+
+ /* compute inner L3 header size */
+ l3_len = l4.hdr - ip.hdr;
+ offset |= (l3_len / 4) << IDPF_TX_DESC_LEN_IPLEN_S;
+
+ /* Enable L4 checksum offloads */
+ switch (l4_proto) {
+ case IPPROTO_TCP:
+ /* enable checksum offloads */
+ cmd |= IDPF_TX_DESC_CMD_L4T_EOFT_TCP;
+ l4_len = l4.tcp->doff;
+ break;
+ case IPPROTO_UDP:
+ /* enable UDP checksum offload */
+ cmd |= IDPF_TX_DESC_CMD_L4T_EOFT_UDP;
+ l4_len = sizeof(struct udphdr) >> 2;
+ break;
+ case IPPROTO_SCTP:
+ /* enable SCTP checksum offload */
+ cmd |= IDPF_TX_DESC_CMD_L4T_EOFT_SCTP;
+ l4_len = sizeof(struct sctphdr) >> 2;
+ break;
+ default:
+ if (is_tso)
+ return -1;
+
+ skb_checksum_help(skb);
+
+ return 0;
+ }
+
+ offset |= l4_len << IDPF_TX_DESC_LEN_L4_LEN_S;
+ off->td_cmd |= cmd;
+ off->hdr_offsets |= offset;
+
+ return 1;
+}
+
+/**
+ * idpf_tx_singleq_map - Build the Tx base descriptor
+ * @tx_q: queue to send buffer on
+ * @first: first buffer info buffer to use
+ * @offloads: pointer to struct that holds offload parameters
+ *
+ * This function loops over the skb data pointed to by *first
+ * and gets a physical address for each memory location and programs
+ * it and the length into the transmit base mode descriptor.
+ */
+static void idpf_tx_singleq_map(struct idpf_queue *tx_q,
+ struct idpf_tx_buf *first,
+ struct idpf_tx_offload_params *offloads)
+{
+ u32 offsets = offloads->hdr_offsets;
+ struct idpf_tx_buf *tx_buf = first;
+ struct idpf_base_tx_desc *tx_desc;
+ struct sk_buff *skb = first->skb;
+ u64 td_cmd = offloads->td_cmd;
+ unsigned int data_len, size;
+ u16 i = tx_q->next_to_use;
+ struct netdev_queue *nq;
+ skb_frag_t *frag;
+ dma_addr_t dma;
+ u64 td_tag = 0;
+
+ data_len = skb->data_len;
+ size = skb_headlen(skb);
+
+ tx_desc = IDPF_BASE_TX_DESC(tx_q, i);
+
+ dma = dma_map_single(tx_q->dev, skb->data, size, DMA_TO_DEVICE);
+
+ /* write each descriptor with CRC bit */
+ if (tx_q->vport->crc_enable)
+ td_cmd |= IDPF_TX_DESC_CMD_ICRC;
+
+ for (frag = &skb_shinfo(skb)->frags[0];; frag++) {
+ unsigned int max_data = IDPF_TX_MAX_DESC_DATA_ALIGNED;
+
+ if (dma_mapping_error(tx_q->dev, dma))
+ return idpf_tx_dma_map_error(tx_q, skb, first, i);
+
+ /* record length, and DMA address */
+ dma_unmap_len_set(tx_buf, len, size);
+ dma_unmap_addr_set(tx_buf, dma, dma);
+
+ /* align size to end of page */
+ max_data += -dma & (IDPF_TX_MAX_READ_REQ_SIZE - 1);
+ tx_desc->buf_addr = cpu_to_le64(dma);
+
+ /* account for data chunks larger than the hardware
+ * can handle
+ */
+ while (unlikely(size > IDPF_TX_MAX_DESC_DATA)) {
+ tx_desc->qw1 = idpf_tx_singleq_build_ctob(td_cmd,
+ offsets,
+ max_data,
+ td_tag);
+ tx_desc++;
+ i++;
+
+ if (i == tx_q->desc_count) {
+ tx_desc = IDPF_BASE_TX_DESC(tx_q, 0);
+ i = 0;
+ }
+
+ dma += max_data;
+ size -= max_data;
+
+ max_data = IDPF_TX_MAX_DESC_DATA_ALIGNED;
+ tx_desc->buf_addr = cpu_to_le64(dma);
+ }
+
+ if (!data_len)
+ break;
+
+ tx_desc->qw1 = idpf_tx_singleq_build_ctob(td_cmd, offsets,
+ size, td_tag);
+ tx_desc++;
+ i++;
+
+ if (i == tx_q->desc_count) {
+ tx_desc = IDPF_BASE_TX_DESC(tx_q, 0);
+ i = 0;
+ }
+
+ size = skb_frag_size(frag);
+ data_len -= size;
+
+ dma = skb_frag_dma_map(tx_q->dev, frag, 0, size,
+ DMA_TO_DEVICE);
+
+ tx_buf = &tx_q->tx_buf[i];
+ }
+
+ skb_tx_timestamp(first->skb);
+
+ /* write last descriptor with RS and EOP bits */
+ td_cmd |= (u64)(IDPF_TX_DESC_CMD_EOP | IDPF_TX_DESC_CMD_RS);
+
+ tx_desc->qw1 = idpf_tx_singleq_build_ctob(td_cmd, offsets,
+ size, td_tag);
+
+ IDPF_SINGLEQ_BUMP_RING_IDX(tx_q, i);
+
+ /* set next_to_watch value indicating a packet is present */
+ first->next_to_watch = tx_desc;
+
+ nq = netdev_get_tx_queue(tx_q->vport->netdev, tx_q->idx);
+ netdev_tx_sent_queue(nq, first->bytecount);
+
+ idpf_tx_buf_hw_update(tx_q, i, netdev_xmit_more());
+}
+
+/**
+ * idpf_tx_singleq_get_ctx_desc - grab next desc and update buffer ring
+ * @txq: queue to put context descriptor on
+ *
+ * Since the TX buffer rings mimics the descriptor ring, update the tx buffer
+ * ring entry to reflect that this index is a context descriptor
+ */
+static struct idpf_base_tx_ctx_desc *
+idpf_tx_singleq_get_ctx_desc(struct idpf_queue *txq)
+{
+ struct idpf_base_tx_ctx_desc *ctx_desc;
+ int ntu = txq->next_to_use;
+
+ memset(&txq->tx_buf[ntu], 0, sizeof(struct idpf_tx_buf));
+ txq->tx_buf[ntu].ctx_entry = true;
+
+ ctx_desc = IDPF_BASE_TX_CTX_DESC(txq, ntu);
+
+ IDPF_SINGLEQ_BUMP_RING_IDX(txq, ntu);
+ txq->next_to_use = ntu;
+
+ return ctx_desc;
+}
+
+/**
+ * idpf_tx_singleq_build_ctx_desc - populate context descriptor
+ * @txq: queue to send buffer on
+ * @offload: offload parameter structure
+ **/
+static void idpf_tx_singleq_build_ctx_desc(struct idpf_queue *txq,
+ struct idpf_tx_offload_params *offload)
+{
+ struct idpf_base_tx_ctx_desc *desc = idpf_tx_singleq_get_ctx_desc(txq);
+ u64 qw1 = (u64)IDPF_TX_DESC_DTYPE_CTX;
+
+ if (offload->tso_segs) {
+ qw1 |= IDPF_TX_CTX_DESC_TSO << IDPF_TXD_CTX_QW1_CMD_S;
+ qw1 |= ((u64)offload->tso_len << IDPF_TXD_CTX_QW1_TSO_LEN_S) &
+ IDPF_TXD_CTX_QW1_TSO_LEN_M;
+ qw1 |= ((u64)offload->mss << IDPF_TXD_CTX_QW1_MSS_S) &
+ IDPF_TXD_CTX_QW1_MSS_M;
+
+ u64_stats_update_begin(&txq->stats_sync);
+ u64_stats_inc(&txq->q_stats.tx.lso_pkts);
+ u64_stats_update_end(&txq->stats_sync);
+ }
+
+ desc->qw0.tunneling_params = cpu_to_le32(offload->cd_tunneling);
+
+ desc->qw0.l2tag2 = 0;
+ desc->qw0.rsvd1 = 0;
+ desc->qw1 = cpu_to_le64(qw1);
+}
+
+/**
+ * idpf_tx_singleq_frame - Sends buffer on Tx ring using base descriptors
+ * @skb: send buffer
+ * @tx_q: queue to send buffer on
+ *
+ * Returns NETDEV_TX_OK if sent, else an error code
+ */
+static netdev_tx_t idpf_tx_singleq_frame(struct sk_buff *skb,
+ struct idpf_queue *tx_q)
+{
+ struct idpf_tx_offload_params offload = { };
+ struct idpf_tx_buf *first;
+ unsigned int count;
+ __be16 protocol;
+ int csum, tso;
+
+ count = idpf_tx_desc_count_required(tx_q, skb);
+ if (unlikely(!count))
+ return idpf_tx_drop_skb(tx_q, skb);
+
+ if (idpf_tx_maybe_stop_common(tx_q,
+ count + IDPF_TX_DESCS_PER_CACHE_LINE +
+ IDPF_TX_DESCS_FOR_CTX)) {
+ idpf_tx_buf_hw_update(tx_q, tx_q->next_to_use, false);
+
+ return NETDEV_TX_BUSY;
+ }
+
+ protocol = vlan_get_protocol(skb);
+ if (protocol == htons(ETH_P_IP))
+ offload.tx_flags |= IDPF_TX_FLAGS_IPV4;
+ else if (protocol == htons(ETH_P_IPV6))
+ offload.tx_flags |= IDPF_TX_FLAGS_IPV6;
+
+ tso = idpf_tso(skb, &offload);
+ if (tso < 0)
+ goto out_drop;
+
+ csum = idpf_tx_singleq_csum(skb, &offload);
+ if (csum < 0)
+ goto out_drop;
+
+ if (tso || offload.cd_tunneling)
+ idpf_tx_singleq_build_ctx_desc(tx_q, &offload);
+
+ /* record the location of the first descriptor for this packet */
+ first = &tx_q->tx_buf[tx_q->next_to_use];
+ first->skb = skb;
+
+ if (tso) {
+ first->gso_segs = offload.tso_segs;
+ first->bytecount = skb->len + ((first->gso_segs - 1) * offload.tso_hdr_len);
+ } else {
+ first->bytecount = max_t(unsigned int, skb->len, ETH_ZLEN);
+ first->gso_segs = 1;
+ }
+ idpf_tx_singleq_map(tx_q, first, &offload);
+
+ return NETDEV_TX_OK;
+
+out_drop:
+ return idpf_tx_drop_skb(tx_q, skb);
+}
+
+/**
+ * idpf_tx_singleq_start - Selects the right Tx queue to send buffer
+ * @skb: send buffer
+ * @netdev: network interface device structure
+ *
+ * Returns NETDEV_TX_OK if sent, else an error code
+ */
+netdev_tx_t idpf_tx_singleq_start(struct sk_buff *skb,
+ struct net_device *netdev)
+{
+ struct idpf_vport *vport = idpf_netdev_to_vport(netdev);
+ struct idpf_queue *tx_q;
+
+ tx_q = vport->txqs[skb_get_queue_mapping(skb)];
+
+ /* hardware can't handle really short frames, hardware padding works
+ * beyond this point
+ */
+ if (skb_put_padto(skb, IDPF_TX_MIN_PKT_LEN)) {
+ idpf_tx_buf_hw_update(tx_q, tx_q->next_to_use, false);
+
+ return NETDEV_TX_OK;
+ }
+
+ return idpf_tx_singleq_frame(skb, tx_q);
+}
+
+/**
+ * idpf_tx_singleq_clean - Reclaim resources from queue
+ * @tx_q: Tx queue to clean
+ * @napi_budget: Used to determine if we are in netpoll
+ * @cleaned: returns number of packets cleaned
+ *
+ */
+static bool idpf_tx_singleq_clean(struct idpf_queue *tx_q, int napi_budget,
+ int *cleaned)
+{
+ unsigned int budget = tx_q->vport->compln_clean_budget;
+ unsigned int total_bytes = 0, total_pkts = 0;
+ struct idpf_base_tx_desc *tx_desc;
+ s16 ntc = tx_q->next_to_clean;
+ struct idpf_netdev_priv *np;
+ struct idpf_tx_buf *tx_buf;
+ struct idpf_vport *vport;
+ struct netdev_queue *nq;
+ bool dont_wake;
+
+ tx_desc = IDPF_BASE_TX_DESC(tx_q, ntc);
+ tx_buf = &tx_q->tx_buf[ntc];
+ ntc -= tx_q->desc_count;
+
+ do {
+ struct idpf_base_tx_desc *eop_desc;
+
+ /* If this entry in the ring was used as a context descriptor,
+ * it's corresponding entry in the buffer ring will indicate as
+ * such. We can skip this descriptor since there is no buffer
+ * to clean.
+ */
+ if (tx_buf->ctx_entry) {
+ /* Clear this flag here to avoid stale flag values when
+ * this buffer is used for actual data in the future.
+ * There are cases where the tx_buf struct / the flags
+ * field will not be cleared before being reused.
+ */
+ tx_buf->ctx_entry = false;
+ goto fetch_next_txq_desc;
+ }
+
+ /* if next_to_watch is not set then no work pending */
+ eop_desc = (struct idpf_base_tx_desc *)tx_buf->next_to_watch;
+ if (!eop_desc)
+ break;
+
+ /* prevent any other reads prior to eop_desc */
+ smp_rmb();
+
+ /* if the descriptor isn't done, no work yet to do */
+ if (!(eop_desc->qw1 &
+ cpu_to_le64(IDPF_TX_DESC_DTYPE_DESC_DONE)))
+ break;
+
+ /* clear next_to_watch to prevent false hangs */
+ tx_buf->next_to_watch = NULL;
+
+ /* update the statistics for this packet */
+ total_bytes += tx_buf->bytecount;
+ total_pkts += tx_buf->gso_segs;
+
+ napi_consume_skb(tx_buf->skb, napi_budget);
+
+ /* unmap skb header data */
+ dma_unmap_single(tx_q->dev,
+ dma_unmap_addr(tx_buf, dma),
+ dma_unmap_len(tx_buf, len),
+ DMA_TO_DEVICE);
+
+ /* clear tx_buf data */
+ tx_buf->skb = NULL;
+ dma_unmap_len_set(tx_buf, len, 0);
+
+ /* unmap remaining buffers */
+ while (tx_desc != eop_desc) {
+ tx_buf++;
+ tx_desc++;
+ ntc++;
+ if (unlikely(!ntc)) {
+ ntc -= tx_q->desc_count;
+ tx_buf = tx_q->tx_buf;
+ tx_desc = IDPF_BASE_TX_DESC(tx_q, 0);
+ }
+
+ /* unmap any remaining paged data */
+ if (dma_unmap_len(tx_buf, len)) {
+ dma_unmap_page(tx_q->dev,
+ dma_unmap_addr(tx_buf, dma),
+ dma_unmap_len(tx_buf, len),
+ DMA_TO_DEVICE);
+ dma_unmap_len_set(tx_buf, len, 0);
+ }
+ }
+
+ /* update budget only if we did something */
+ budget--;
+
+fetch_next_txq_desc:
+ tx_buf++;
+ tx_desc++;
+ ntc++;
+ if (unlikely(!ntc)) {
+ ntc -= tx_q->desc_count;
+ tx_buf = tx_q->tx_buf;
+ tx_desc = IDPF_BASE_TX_DESC(tx_q, 0);
+ }
+ } while (likely(budget));
+
+ ntc += tx_q->desc_count;
+ tx_q->next_to_clean = ntc;
+
+ *cleaned += total_pkts;
+
+ u64_stats_update_begin(&tx_q->stats_sync);
+ u64_stats_add(&tx_q->q_stats.tx.packets, total_pkts);
+ u64_stats_add(&tx_q->q_stats.tx.bytes, total_bytes);
+ u64_stats_update_end(&tx_q->stats_sync);
+
+ vport = tx_q->vport;
+ np = netdev_priv(vport->netdev);
+ nq = netdev_get_tx_queue(vport->netdev, tx_q->idx);
+
+ dont_wake = np->state != __IDPF_VPORT_UP ||
+ !netif_carrier_ok(vport->netdev);
+ __netif_txq_completed_wake(nq, total_pkts, total_bytes,
+ IDPF_DESC_UNUSED(tx_q), IDPF_TX_WAKE_THRESH,
+ dont_wake);
+
+ return !!budget;
+}
+
+/**
+ * idpf_tx_singleq_clean_all - Clean all Tx queues
+ * @q_vec: queue vector
+ * @budget: Used to determine if we are in netpoll
+ * @cleaned: returns number of packets cleaned
+ *
+ * Returns false if clean is not complete else returns true
+ */
+static bool idpf_tx_singleq_clean_all(struct idpf_q_vector *q_vec, int budget,
+ int *cleaned)
+{
+ u16 num_txq = q_vec->num_txq;
+ bool clean_complete = true;
+ int i, budget_per_q;
+
+ budget_per_q = num_txq ? max(budget / num_txq, 1) : 0;
+ for (i = 0; i < num_txq; i++) {
+ struct idpf_queue *q;
+
+ q = q_vec->tx[i];
+ clean_complete &= idpf_tx_singleq_clean(q, budget_per_q,
+ cleaned);
+ }
+
+ return clean_complete;
+}
+
+/**
+ * idpf_rx_singleq_test_staterr - tests bits in Rx descriptor
+ * status and error fields
+ * @rx_desc: pointer to receive descriptor (in le64 format)
+ * @stat_err_bits: value to mask
+ *
+ * This function does some fast chicanery in order to return the
+ * value of the mask which is really only used for boolean tests.
+ * The status_error_ptype_len doesn't need to be shifted because it begins
+ * at offset zero.
+ */
+static bool idpf_rx_singleq_test_staterr(const union virtchnl2_rx_desc *rx_desc,
+ const u64 stat_err_bits)
+{
+ return !!(rx_desc->base_wb.qword1.status_error_ptype_len &
+ cpu_to_le64(stat_err_bits));
+}
+
+/**
+ * idpf_rx_singleq_is_non_eop - process handling of non-EOP buffers
+ * @rxq: Rx ring being processed
+ * @rx_desc: Rx descriptor for current buffer
+ * @skb: Current socket buffer containing buffer in progress
+ * @ntc: next to clean
+ */
+static bool idpf_rx_singleq_is_non_eop(struct idpf_queue *rxq,
+ union virtchnl2_rx_desc *rx_desc,
+ struct sk_buff *skb, u16 ntc)
+{
+ /* if we are the last buffer then there is nothing else to do */
+ if (likely(idpf_rx_singleq_test_staterr(rx_desc, IDPF_RXD_EOF_SINGLEQ)))
+ return false;
+
+ return true;
+}
+
+/**
+ * idpf_rx_singleq_csum - Indicate in skb if checksum is good
+ * @rxq: Rx ring being processed
+ * @skb: skb currently being received and modified
+ * @csum_bits: checksum bits from descriptor
+ * @ptype: the packet type decoded by hardware
+ *
+ * skb->protocol must be set before this function is called
+ */
+static void idpf_rx_singleq_csum(struct idpf_queue *rxq, struct sk_buff *skb,
+ struct idpf_rx_csum_decoded *csum_bits,
+ u16 ptype)
+{
+ struct idpf_rx_ptype_decoded decoded;
+ bool ipv4, ipv6;
+
+ /* check if Rx checksum is enabled */
+ if (unlikely(!(rxq->vport->netdev->features & NETIF_F_RXCSUM)))
+ return;
+
+ /* check if HW has decoded the packet and checksum */
+ if (unlikely(!(csum_bits->l3l4p)))
+ return;
+
+ decoded = rxq->vport->rx_ptype_lkup[ptype];
+ if (unlikely(!(decoded.known && decoded.outer_ip)))
+ return;
+
+ ipv4 = IDPF_RX_PTYPE_TO_IPV(&decoded, IDPF_RX_PTYPE_OUTER_IPV4);
+ ipv6 = IDPF_RX_PTYPE_TO_IPV(&decoded, IDPF_RX_PTYPE_OUTER_IPV6);
+
+ /* Check if there were any checksum errors */
+ if (unlikely(ipv4 && (csum_bits->ipe || csum_bits->eipe)))
+ goto checksum_fail;
+
+ /* Device could not do any checksum offload for certain extension
+ * headers as indicated by setting IPV6EXADD bit
+ */
+ if (unlikely(ipv6 && csum_bits->ipv6exadd))
+ return;
+
+ /* check for L4 errors and handle packets that were not able to be
+ * checksummed due to arrival speed
+ */
+ if (unlikely(csum_bits->l4e))
+ goto checksum_fail;
+
+ if (unlikely(csum_bits->nat && csum_bits->eudpe))
+ goto checksum_fail;
+
+ /* Handle packets that were not able to be checksummed due to arrival
+ * speed, in this case the stack can compute the csum.
+ */
+ if (unlikely(csum_bits->pprs))
+ return;
+
+ /* If there is an outer header present that might contain a checksum
+ * we need to bump the checksum level by 1 to reflect the fact that
+ * we are indicating we validated the inner checksum.
+ */
+ if (decoded.tunnel_type >= IDPF_RX_PTYPE_TUNNEL_IP_GRENAT)
+ skb->csum_level = 1;
+
+ /* Only report checksum unnecessary for ICMP, TCP, UDP, or SCTP */
+ switch (decoded.inner_prot) {
+ case IDPF_RX_PTYPE_INNER_PROT_ICMP:
+ case IDPF_RX_PTYPE_INNER_PROT_TCP:
+ case IDPF_RX_PTYPE_INNER_PROT_UDP:
+ case IDPF_RX_PTYPE_INNER_PROT_SCTP:
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ return;
+ default:
+ return;
+ }
+
+checksum_fail:
+ u64_stats_update_begin(&rxq->stats_sync);
+ u64_stats_inc(&rxq->q_stats.rx.hw_csum_err);
+ u64_stats_update_end(&rxq->stats_sync);
+}
+
+/**
+ * idpf_rx_singleq_base_csum - Indicate in skb if hw indicated a good cksum
+ * @rx_q: Rx completion queue
+ * @skb: skb currently being received and modified
+ * @rx_desc: the receive descriptor
+ * @ptype: Rx packet type
+ *
+ * This function only operates on the VIRTCHNL2_RXDID_1_32B_BASE_M base 32byte
+ * descriptor writeback format.
+ **/
+static void idpf_rx_singleq_base_csum(struct idpf_queue *rx_q,
+ struct sk_buff *skb,
+ union virtchnl2_rx_desc *rx_desc,
+ u16 ptype)
+{
+ struct idpf_rx_csum_decoded csum_bits;
+ u32 rx_error, rx_status;
+ u64 qword;
+
+ qword = le64_to_cpu(rx_desc->base_wb.qword1.status_error_ptype_len);
+
+ rx_status = FIELD_GET(VIRTCHNL2_RX_BASE_DESC_QW1_STATUS_M, qword);
+ rx_error = FIELD_GET(VIRTCHNL2_RX_BASE_DESC_QW1_ERROR_M, qword);
+
+ csum_bits.ipe = FIELD_GET(VIRTCHNL2_RX_BASE_DESC_ERROR_IPE_M, rx_error);
+ csum_bits.eipe = FIELD_GET(VIRTCHNL2_RX_BASE_DESC_ERROR_EIPE_M,
+ rx_error);
+ csum_bits.l4e = FIELD_GET(VIRTCHNL2_RX_BASE_DESC_ERROR_L4E_M, rx_error);
+ csum_bits.pprs = FIELD_GET(VIRTCHNL2_RX_BASE_DESC_ERROR_PPRS_M,
+ rx_error);
+ csum_bits.l3l4p = FIELD_GET(VIRTCHNL2_RX_BASE_DESC_STATUS_L3L4P_M,
+ rx_status);
+ csum_bits.ipv6exadd = FIELD_GET(VIRTCHNL2_RX_BASE_DESC_STATUS_IPV6EXADD_M,
+ rx_status);
+ csum_bits.nat = 0;
+ csum_bits.eudpe = 0;
+
+ idpf_rx_singleq_csum(rx_q, skb, &csum_bits, ptype);
+}
+
+/**
+ * idpf_rx_singleq_flex_csum - Indicate in skb if hw indicated a good cksum
+ * @rx_q: Rx completion queue
+ * @skb: skb currently being received and modified
+ * @rx_desc: the receive descriptor
+ * @ptype: Rx packet type
+ *
+ * This function only operates on the VIRTCHNL2_RXDID_2_FLEX_SQ_NIC flexible
+ * descriptor writeback format.
+ **/
+static void idpf_rx_singleq_flex_csum(struct idpf_queue *rx_q,
+ struct sk_buff *skb,
+ union virtchnl2_rx_desc *rx_desc,
+ u16 ptype)
+{
+ struct idpf_rx_csum_decoded csum_bits;
+ u16 rx_status0, rx_status1;
+
+ rx_status0 = le16_to_cpu(rx_desc->flex_nic_wb.status_error0);
+ rx_status1 = le16_to_cpu(rx_desc->flex_nic_wb.status_error1);
+
+ csum_bits.ipe = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_STATUS0_XSUM_IPE_M,
+ rx_status0);
+ csum_bits.eipe = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_STATUS0_XSUM_EIPE_M,
+ rx_status0);
+ csum_bits.l4e = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_STATUS0_XSUM_L4E_M,
+ rx_status0);
+ csum_bits.eudpe = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_STATUS0_XSUM_EUDPE_M,
+ rx_status0);
+ csum_bits.l3l4p = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_STATUS0_L3L4P_M,
+ rx_status0);
+ csum_bits.ipv6exadd = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_STATUS0_IPV6EXADD_M,
+ rx_status0);
+ csum_bits.nat = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_STATUS1_NAT_M,
+ rx_status1);
+ csum_bits.pprs = 0;
+
+ idpf_rx_singleq_csum(rx_q, skb, &csum_bits, ptype);
+}
+
+/**
+ * idpf_rx_singleq_base_hash - set the hash value in the skb
+ * @rx_q: Rx completion queue
+ * @skb: skb currently being received and modified
+ * @rx_desc: specific descriptor
+ * @decoded: Decoded Rx packet type related fields
+ *
+ * This function only operates on the VIRTCHNL2_RXDID_1_32B_BASE_M base 32byte
+ * descriptor writeback format.
+ **/
+static void idpf_rx_singleq_base_hash(struct idpf_queue *rx_q,
+ struct sk_buff *skb,
+ union virtchnl2_rx_desc *rx_desc,
+ struct idpf_rx_ptype_decoded *decoded)
+{
+ u64 mask, qw1;
+
+ if (unlikely(!(rx_q->vport->netdev->features & NETIF_F_RXHASH)))
+ return;
+
+ mask = VIRTCHNL2_RX_BASE_DESC_FLTSTAT_RSS_HASH_M;
+ qw1 = le64_to_cpu(rx_desc->base_wb.qword1.status_error_ptype_len);
+
+ if (FIELD_GET(mask, qw1) == mask) {
+ u32 hash = le32_to_cpu(rx_desc->base_wb.qword0.hi_dword.rss);
+
+ skb_set_hash(skb, hash, idpf_ptype_to_htype(decoded));
+ }
+}
+
+/**
+ * idpf_rx_singleq_flex_hash - set the hash value in the skb
+ * @rx_q: Rx completion queue
+ * @skb: skb currently being received and modified
+ * @rx_desc: specific descriptor
+ * @decoded: Decoded Rx packet type related fields
+ *
+ * This function only operates on the VIRTCHNL2_RXDID_2_FLEX_SQ_NIC flexible
+ * descriptor writeback format.
+ **/
+static void idpf_rx_singleq_flex_hash(struct idpf_queue *rx_q,
+ struct sk_buff *skb,
+ union virtchnl2_rx_desc *rx_desc,
+ struct idpf_rx_ptype_decoded *decoded)
+{
+ if (unlikely(!(rx_q->vport->netdev->features & NETIF_F_RXHASH)))
+ return;
+
+ if (FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_STATUS0_RSS_VALID_M,
+ le16_to_cpu(rx_desc->flex_nic_wb.status_error0)))
+ skb_set_hash(skb, le32_to_cpu(rx_desc->flex_nic_wb.rss_hash),
+ idpf_ptype_to_htype(decoded));
+}
+
+/**
+ * idpf_rx_singleq_process_skb_fields - Populate skb header fields from Rx
+ * descriptor
+ * @rx_q: Rx ring being processed
+ * @skb: pointer to current skb being populated
+ * @rx_desc: descriptor for skb
+ * @ptype: packet type
+ *
+ * This function checks the ring, descriptor, and packet information in
+ * order to populate the hash, checksum, VLAN, protocol, and
+ * other fields within the skb.
+ */
+static void idpf_rx_singleq_process_skb_fields(struct idpf_queue *rx_q,
+ struct sk_buff *skb,
+ union virtchnl2_rx_desc *rx_desc,
+ u16 ptype)
+{
+ struct idpf_rx_ptype_decoded decoded =
+ rx_q->vport->rx_ptype_lkup[ptype];
+
+ /* modifies the skb - consumes the enet header */
+ skb->protocol = eth_type_trans(skb, rx_q->vport->netdev);
+
+ /* Check if we're using base mode descriptor IDs */
+ if (rx_q->rxdids == VIRTCHNL2_RXDID_1_32B_BASE_M) {
+ idpf_rx_singleq_base_hash(rx_q, skb, rx_desc, &decoded);
+ idpf_rx_singleq_base_csum(rx_q, skb, rx_desc, ptype);
+ } else {
+ idpf_rx_singleq_flex_hash(rx_q, skb, rx_desc, &decoded);
+ idpf_rx_singleq_flex_csum(rx_q, skb, rx_desc, ptype);
+ }
+}
+
+/**
+ * idpf_rx_singleq_buf_hw_alloc_all - Replace used receive buffers
+ * @rx_q: queue for which the hw buffers are allocated
+ * @cleaned_count: number of buffers to replace
+ *
+ * Returns false if all allocations were successful, true if any fail
+ */
+bool idpf_rx_singleq_buf_hw_alloc_all(struct idpf_queue *rx_q,
+ u16 cleaned_count)
+{
+ struct virtchnl2_singleq_rx_buf_desc *desc;
+ u16 nta = rx_q->next_to_alloc;
+ struct idpf_rx_buf *buf;
+
+ if (!cleaned_count)
+ return false;
+
+ desc = IDPF_SINGLEQ_RX_BUF_DESC(rx_q, nta);
+ buf = &rx_q->rx_buf.buf[nta];
+
+ do {
+ dma_addr_t addr;
+
+ addr = idpf_alloc_page(rx_q->pp, buf, rx_q->rx_buf_size);
+ if (unlikely(addr == DMA_MAPPING_ERROR))
+ break;
+
+ /* Refresh the desc even if buffer_addrs didn't change
+ * because each write-back erases this info.
+ */
+ desc->pkt_addr = cpu_to_le64(addr);
+ desc->hdr_addr = 0;
+ desc++;
+
+ buf++;
+ nta++;
+ if (unlikely(nta == rx_q->desc_count)) {
+ desc = IDPF_SINGLEQ_RX_BUF_DESC(rx_q, 0);
+ buf = rx_q->rx_buf.buf;
+ nta = 0;
+ }
+
+ cleaned_count--;
+ } while (cleaned_count);
+
+ if (rx_q->next_to_alloc != nta) {
+ idpf_rx_buf_hw_update(rx_q, nta);
+ rx_q->next_to_alloc = nta;
+ }
+
+ return !!cleaned_count;
+}
+
+/**
+ * idpf_rx_singleq_extract_base_fields - Extract fields from the Rx descriptor
+ * @rx_q: Rx descriptor queue
+ * @rx_desc: the descriptor to process
+ * @fields: storage for extracted values
+ *
+ * Decode the Rx descriptor and extract relevant information including the
+ * size and Rx packet type.
+ *
+ * This function only operates on the VIRTCHNL2_RXDID_1_32B_BASE_M base 32byte
+ * descriptor writeback format.
+ */
+static void idpf_rx_singleq_extract_base_fields(struct idpf_queue *rx_q,
+ union virtchnl2_rx_desc *rx_desc,
+ struct idpf_rx_extracted *fields)
+{
+ u64 qword;
+
+ qword = le64_to_cpu(rx_desc->base_wb.qword1.status_error_ptype_len);
+
+ fields->size = FIELD_GET(VIRTCHNL2_RX_BASE_DESC_QW1_LEN_PBUF_M, qword);
+ fields->rx_ptype = FIELD_GET(VIRTCHNL2_RX_BASE_DESC_QW1_PTYPE_M, qword);
+}
+
+/**
+ * idpf_rx_singleq_extract_flex_fields - Extract fields from the Rx descriptor
+ * @rx_q: Rx descriptor queue
+ * @rx_desc: the descriptor to process
+ * @fields: storage for extracted values
+ *
+ * Decode the Rx descriptor and extract relevant information including the
+ * size and Rx packet type.
+ *
+ * This function only operates on the VIRTCHNL2_RXDID_2_FLEX_SQ_NIC flexible
+ * descriptor writeback format.
+ */
+static void idpf_rx_singleq_extract_flex_fields(struct idpf_queue *rx_q,
+ union virtchnl2_rx_desc *rx_desc,
+ struct idpf_rx_extracted *fields)
+{
+ fields->size = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_PKT_LEN_M,
+ le16_to_cpu(rx_desc->flex_nic_wb.pkt_len));
+ fields->rx_ptype = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_PTYPE_M,
+ le16_to_cpu(rx_desc->flex_nic_wb.ptype_flex_flags0));
+}
+
+/**
+ * idpf_rx_singleq_extract_fields - Extract fields from the Rx descriptor
+ * @rx_q: Rx descriptor queue
+ * @rx_desc: the descriptor to process
+ * @fields: storage for extracted values
+ *
+ */
+static void idpf_rx_singleq_extract_fields(struct idpf_queue *rx_q,
+ union virtchnl2_rx_desc *rx_desc,
+ struct idpf_rx_extracted *fields)
+{
+ if (rx_q->rxdids == VIRTCHNL2_RXDID_1_32B_BASE_M)
+ idpf_rx_singleq_extract_base_fields(rx_q, rx_desc, fields);
+ else
+ idpf_rx_singleq_extract_flex_fields(rx_q, rx_desc, fields);
+}
+
+/**
+ * idpf_rx_singleq_clean - Reclaim resources after receive completes
+ * @rx_q: rx queue to clean
+ * @budget: Total limit on number of packets to process
+ *
+ * Returns true if there's any budget left (e.g. the clean is finished)
+ */
+static int idpf_rx_singleq_clean(struct idpf_queue *rx_q, int budget)
+{
+ unsigned int total_rx_bytes = 0, total_rx_pkts = 0;
+ struct sk_buff *skb = rx_q->skb;
+ u16 ntc = rx_q->next_to_clean;
+ u16 cleaned_count = 0;
+ bool failure = false;
+
+ /* Process Rx packets bounded by budget */
+ while (likely(total_rx_pkts < (unsigned int)budget)) {
+ struct idpf_rx_extracted fields = { };
+ union virtchnl2_rx_desc *rx_desc;
+ struct idpf_rx_buf *rx_buf;
+
+ /* get the Rx desc from Rx queue based on 'next_to_clean' */
+ rx_desc = IDPF_RX_DESC(rx_q, ntc);
+
+ /* status_error_ptype_len will always be zero for unused
+ * descriptors because it's cleared in cleanup, and overlaps
+ * with hdr_addr which is always zero because packet split
+ * isn't used, if the hardware wrote DD then the length will be
+ * non-zero
+ */
+#define IDPF_RXD_DD VIRTCHNL2_RX_BASE_DESC_STATUS_DD_M
+ if (!idpf_rx_singleq_test_staterr(rx_desc,
+ IDPF_RXD_DD))
+ break;
+
+ /* This memory barrier is needed to keep us from reading
+ * any other fields out of the rx_desc
+ */
+ dma_rmb();
+
+ idpf_rx_singleq_extract_fields(rx_q, rx_desc, &fields);
+
+ rx_buf = &rx_q->rx_buf.buf[ntc];
+ if (!fields.size) {
+ idpf_rx_put_page(rx_buf);
+ goto skip_data;
+ }
+
+ idpf_rx_sync_for_cpu(rx_buf, fields.size);
+ skb = rx_q->skb;
+ if (skb)
+ idpf_rx_add_frag(rx_buf, skb, fields.size);
+ else
+ skb = idpf_rx_construct_skb(rx_q, rx_buf, fields.size);
+
+ /* exit if we failed to retrieve a buffer */
+ if (!skb)
+ break;
+
+skip_data:
+ IDPF_SINGLEQ_BUMP_RING_IDX(rx_q, ntc);
+
+ cleaned_count++;
+
+ /* skip if it is non EOP desc */
+ if (idpf_rx_singleq_is_non_eop(rx_q, rx_desc, skb, ntc))
+ continue;
+
+#define IDPF_RXD_ERR_S FIELD_PREP(VIRTCHNL2_RX_BASE_DESC_QW1_ERROR_M, \
+ VIRTCHNL2_RX_BASE_DESC_ERROR_RXE_M)
+ if (unlikely(idpf_rx_singleq_test_staterr(rx_desc,
+ IDPF_RXD_ERR_S))) {
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+ continue;
+ }
+
+ /* pad skb if needed (to make valid ethernet frame) */
+ if (eth_skb_pad(skb)) {
+ skb = NULL;
+ continue;
+ }
+
+ /* probably a little skewed due to removing CRC */
+ total_rx_bytes += skb->len;
+
+ /* protocol */
+ idpf_rx_singleq_process_skb_fields(rx_q, skb,
+ rx_desc, fields.rx_ptype);
+
+ /* send completed skb up the stack */
+ napi_gro_receive(&rx_q->q_vector->napi, skb);
+ skb = NULL;
+
+ /* update budget accounting */
+ total_rx_pkts++;
+ }
+
+ rx_q->skb = skb;
+
+ rx_q->next_to_clean = ntc;
+
+ if (cleaned_count)
+ failure = idpf_rx_singleq_buf_hw_alloc_all(rx_q, cleaned_count);
+
+ u64_stats_update_begin(&rx_q->stats_sync);
+ u64_stats_add(&rx_q->q_stats.rx.packets, total_rx_pkts);
+ u64_stats_add(&rx_q->q_stats.rx.bytes, total_rx_bytes);
+ u64_stats_update_end(&rx_q->stats_sync);
+
+ /* guarantee a trip back through this routine if there was a failure */
+ return failure ? budget : (int)total_rx_pkts;
+}
+
+/**
+ * idpf_rx_singleq_clean_all - Clean all Rx queues
+ * @q_vec: queue vector
+ * @budget: Used to determine if we are in netpoll
+ * @cleaned: returns number of packets cleaned
+ *
+ * Returns false if clean is not complete else returns true
+ */
+static bool idpf_rx_singleq_clean_all(struct idpf_q_vector *q_vec, int budget,
+ int *cleaned)
+{
+ u16 num_rxq = q_vec->num_rxq;
+ bool clean_complete = true;
+ int budget_per_q, i;
+
+ /* We attempt to distribute budget to each Rx queue fairly, but don't
+ * allow the budget to go below 1 because that would exit polling early.
+ */
+ budget_per_q = num_rxq ? max(budget / num_rxq, 1) : 0;
+ for (i = 0; i < num_rxq; i++) {
+ struct idpf_queue *rxq = q_vec->rx[i];
+ int pkts_cleaned_per_q;
+
+ pkts_cleaned_per_q = idpf_rx_singleq_clean(rxq, budget_per_q);
+
+ /* if we clean as many as budgeted, we must not be done */
+ if (pkts_cleaned_per_q >= budget_per_q)
+ clean_complete = false;
+ *cleaned += pkts_cleaned_per_q;
+ }
+
+ return clean_complete;
+}
+
+/**
+ * idpf_vport_singleq_napi_poll - NAPI handler
+ * @napi: struct from which you get q_vector
+ * @budget: budget provided by stack
+ */
+int idpf_vport_singleq_napi_poll(struct napi_struct *napi, int budget)
+{
+ struct idpf_q_vector *q_vector =
+ container_of(napi, struct idpf_q_vector, napi);
+ bool clean_complete;
+ int work_done = 0;
+
+ /* Handle case where we are called by netpoll with a budget of 0 */
+ if (budget <= 0) {
+ idpf_tx_singleq_clean_all(q_vector, budget, &work_done);
+
+ return budget;
+ }
+
+ clean_complete = idpf_rx_singleq_clean_all(q_vector, budget,
+ &work_done);
+ clean_complete &= idpf_tx_singleq_clean_all(q_vector, budget,
+ &work_done);
+
+ /* If work not completed, return budget and polling will return */
+ if (!clean_complete)
+ return budget;
+
+ work_done = min_t(int, work_done, budget - 1);
+
+ /* Exit the polling mode, but don't re-enable interrupts if stack might
+ * poll us due to busy-polling
+ */
+ if (likely(napi_complete_done(napi, work_done)))
+ idpf_vport_intr_update_itr_ena_irq(q_vector);
+
+ return work_done;
+}
diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.c b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
new file mode 100644
index 0000000..b0fc1fd
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
@@ -0,0 +1,4297 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf.h"
+
+/**
+ * idpf_buf_lifo_push - push a buffer pointer onto stack
+ * @stack: pointer to stack struct
+ * @buf: pointer to buf to push
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int idpf_buf_lifo_push(struct idpf_buf_lifo *stack,
+ struct idpf_tx_stash *buf)
+{
+ if (unlikely(stack->top == stack->size))
+ return -ENOSPC;
+
+ stack->bufs[stack->top++] = buf;
+
+ return 0;
+}
+
+/**
+ * idpf_buf_lifo_pop - pop a buffer pointer from stack
+ * @stack: pointer to stack struct
+ **/
+static struct idpf_tx_stash *idpf_buf_lifo_pop(struct idpf_buf_lifo *stack)
+{
+ if (unlikely(!stack->top))
+ return NULL;
+
+ return stack->bufs[--stack->top];
+}
+
+/**
+ * idpf_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ * @txqueue: TX queue
+ */
+void idpf_tx_timeout(struct net_device *netdev, unsigned int txqueue)
+{
+ struct idpf_adapter *adapter = idpf_netdev_to_adapter(netdev);
+
+ adapter->tx_timeout_count++;
+
+ netdev_err(netdev, "Detected Tx timeout: Count %d, Queue %d\n",
+ adapter->tx_timeout_count, txqueue);
+ if (!idpf_is_reset_in_prog(adapter)) {
+ set_bit(IDPF_HR_FUNC_RESET, adapter->flags);
+ queue_delayed_work(adapter->vc_event_wq,
+ &adapter->vc_event_task,
+ msecs_to_jiffies(10));
+ }
+}
+
+/**
+ * idpf_tx_buf_rel - Release a Tx buffer
+ * @tx_q: the queue that owns the buffer
+ * @tx_buf: the buffer to free
+ */
+static void idpf_tx_buf_rel(struct idpf_queue *tx_q, struct idpf_tx_buf *tx_buf)
+{
+ if (tx_buf->skb) {
+ if (dma_unmap_len(tx_buf, len))
+ dma_unmap_single(tx_q->dev,
+ dma_unmap_addr(tx_buf, dma),
+ dma_unmap_len(tx_buf, len),
+ DMA_TO_DEVICE);
+ dev_kfree_skb_any(tx_buf->skb);
+ } else if (dma_unmap_len(tx_buf, len)) {
+ dma_unmap_page(tx_q->dev,
+ dma_unmap_addr(tx_buf, dma),
+ dma_unmap_len(tx_buf, len),
+ DMA_TO_DEVICE);
+ }
+
+ tx_buf->next_to_watch = NULL;
+ tx_buf->skb = NULL;
+ tx_buf->compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG;
+ dma_unmap_len_set(tx_buf, len, 0);
+}
+
+/**
+ * idpf_tx_buf_rel_all - Free any empty Tx buffers
+ * @txq: queue to be cleaned
+ */
+static void idpf_tx_buf_rel_all(struct idpf_queue *txq)
+{
+ u16 i;
+
+ /* Buffers already cleared, nothing to do */
+ if (!txq->tx_buf)
+ return;
+
+ /* Free all the Tx buffer sk_buffs */
+ for (i = 0; i < txq->desc_count; i++)
+ idpf_tx_buf_rel(txq, &txq->tx_buf[i]);
+
+ kfree(txq->tx_buf);
+ txq->tx_buf = NULL;
+
+ if (!txq->buf_stack.bufs)
+ return;
+
+ for (i = 0; i < txq->buf_stack.size; i++)
+ kfree(txq->buf_stack.bufs[i]);
+
+ kfree(txq->buf_stack.bufs);
+ txq->buf_stack.bufs = NULL;
+}
+
+/**
+ * idpf_tx_desc_rel - Free Tx resources per queue
+ * @txq: Tx descriptor ring for a specific queue
+ * @bufq: buffer q or completion q
+ *
+ * Free all transmit software resources
+ */
+static void idpf_tx_desc_rel(struct idpf_queue *txq, bool bufq)
+{
+ if (bufq)
+ idpf_tx_buf_rel_all(txq);
+
+ if (!txq->desc_ring)
+ return;
+
+ dmam_free_coherent(txq->dev, txq->size, txq->desc_ring, txq->dma);
+ txq->desc_ring = NULL;
+ txq->next_to_alloc = 0;
+ txq->next_to_use = 0;
+ txq->next_to_clean = 0;
+}
+
+/**
+ * idpf_tx_desc_rel_all - Free Tx Resources for All Queues
+ * @vport: virtual port structure
+ *
+ * Free all transmit software resources
+ */
+static void idpf_tx_desc_rel_all(struct idpf_vport *vport)
+{
+ int i, j;
+
+ if (!vport->txq_grps)
+ return;
+
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *txq_grp = &vport->txq_grps[i];
+
+ for (j = 0; j < txq_grp->num_txq; j++)
+ idpf_tx_desc_rel(txq_grp->txqs[j], true);
+
+ if (idpf_is_queue_model_split(vport->txq_model))
+ idpf_tx_desc_rel(txq_grp->complq, false);
+ }
+}
+
+/**
+ * idpf_tx_buf_alloc_all - Allocate memory for all buffer resources
+ * @tx_q: queue for which the buffers are allocated
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_tx_buf_alloc_all(struct idpf_queue *tx_q)
+{
+ int buf_size;
+ int i;
+
+ /* Allocate book keeping buffers only. Buffers to be supplied to HW
+ * are allocated by kernel network stack and received as part of skb
+ */
+ buf_size = sizeof(struct idpf_tx_buf) * tx_q->desc_count;
+ tx_q->tx_buf = kzalloc(buf_size, GFP_KERNEL);
+ if (!tx_q->tx_buf)
+ return -ENOMEM;
+
+ /* Initialize tx_bufs with invalid completion tags */
+ for (i = 0; i < tx_q->desc_count; i++)
+ tx_q->tx_buf[i].compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG;
+
+ /* Initialize tx buf stack for out-of-order completions if
+ * flow scheduling offload is enabled
+ */
+ tx_q->buf_stack.bufs =
+ kcalloc(tx_q->desc_count, sizeof(struct idpf_tx_stash *),
+ GFP_KERNEL);
+ if (!tx_q->buf_stack.bufs)
+ return -ENOMEM;
+
+ tx_q->buf_stack.size = tx_q->desc_count;
+ tx_q->buf_stack.top = tx_q->desc_count;
+
+ for (i = 0; i < tx_q->desc_count; i++) {
+ tx_q->buf_stack.bufs[i] = kzalloc(sizeof(*tx_q->buf_stack.bufs[i]),
+ GFP_KERNEL);
+ if (!tx_q->buf_stack.bufs[i])
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+/**
+ * idpf_tx_desc_alloc - Allocate the Tx descriptors
+ * @tx_q: the tx ring to set up
+ * @bufq: buffer or completion queue
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_tx_desc_alloc(struct idpf_queue *tx_q, bool bufq)
+{
+ struct device *dev = tx_q->dev;
+ u32 desc_sz;
+ int err;
+
+ if (bufq) {
+ err = idpf_tx_buf_alloc_all(tx_q);
+ if (err)
+ goto err_alloc;
+
+ desc_sz = sizeof(struct idpf_base_tx_desc);
+ } else {
+ desc_sz = sizeof(struct idpf_splitq_tx_compl_desc);
+ }
+
+ tx_q->size = tx_q->desc_count * desc_sz;
+
+ /* Allocate descriptors also round up to nearest 4K */
+ tx_q->size = ALIGN(tx_q->size, 4096);
+ tx_q->desc_ring = dmam_alloc_coherent(dev, tx_q->size, &tx_q->dma,
+ GFP_KERNEL);
+ if (!tx_q->desc_ring) {
+ dev_err(dev, "Unable to allocate memory for the Tx descriptor ring, size=%d\n",
+ tx_q->size);
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ tx_q->next_to_alloc = 0;
+ tx_q->next_to_use = 0;
+ tx_q->next_to_clean = 0;
+ set_bit(__IDPF_Q_GEN_CHK, tx_q->flags);
+
+ return 0;
+
+err_alloc:
+ idpf_tx_desc_rel(tx_q, bufq);
+
+ return err;
+}
+
+/**
+ * idpf_tx_desc_alloc_all - allocate all queues Tx resources
+ * @vport: virtual port private structure
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_tx_desc_alloc_all(struct idpf_vport *vport)
+{
+ struct device *dev = &vport->adapter->pdev->dev;
+ int err = 0;
+ int i, j;
+
+ /* Setup buffer queues. In single queue model buffer queues and
+ * completion queues will be same
+ */
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ for (j = 0; j < vport->txq_grps[i].num_txq; j++) {
+ struct idpf_queue *txq = vport->txq_grps[i].txqs[j];
+ u8 gen_bits = 0;
+ u16 bufidx_mask;
+
+ err = idpf_tx_desc_alloc(txq, true);
+ if (err) {
+ dev_err(dev, "Allocation for Tx Queue %u failed\n",
+ i);
+ goto err_out;
+ }
+
+ if (!idpf_is_queue_model_split(vport->txq_model))
+ continue;
+
+ txq->compl_tag_cur_gen = 0;
+
+ /* Determine the number of bits in the bufid
+ * mask and add one to get the start of the
+ * generation bits
+ */
+ bufidx_mask = txq->desc_count - 1;
+ while (bufidx_mask >> 1) {
+ txq->compl_tag_gen_s++;
+ bufidx_mask = bufidx_mask >> 1;
+ }
+ txq->compl_tag_gen_s++;
+
+ gen_bits = IDPF_TX_SPLITQ_COMPL_TAG_WIDTH -
+ txq->compl_tag_gen_s;
+ txq->compl_tag_gen_max = GETMAXVAL(gen_bits);
+
+ /* Set bufid mask based on location of first
+ * gen bit; it cannot simply be the descriptor
+ * ring size-1 since we can have size values
+ * where not all of those bits are set.
+ */
+ txq->compl_tag_bufid_m =
+ GETMAXVAL(txq->compl_tag_gen_s);
+ }
+
+ if (!idpf_is_queue_model_split(vport->txq_model))
+ continue;
+
+ /* Setup completion queues */
+ err = idpf_tx_desc_alloc(vport->txq_grps[i].complq, false);
+ if (err) {
+ dev_err(dev, "Allocation for Tx Completion Queue %u failed\n",
+ i);
+ goto err_out;
+ }
+ }
+
+err_out:
+ if (err)
+ idpf_tx_desc_rel_all(vport);
+
+ return err;
+}
+
+/**
+ * idpf_rx_page_rel - Release an rx buffer page
+ * @rxq: the queue that owns the buffer
+ * @rx_buf: the buffer to free
+ */
+static void idpf_rx_page_rel(struct idpf_queue *rxq, struct idpf_rx_buf *rx_buf)
+{
+ if (unlikely(!rx_buf->page))
+ return;
+
+ page_pool_put_full_page(rxq->pp, rx_buf->page, false);
+
+ rx_buf->page = NULL;
+ rx_buf->page_offset = 0;
+}
+
+/**
+ * idpf_rx_hdr_buf_rel_all - Release header buffer memory
+ * @rxq: queue to use
+ */
+static void idpf_rx_hdr_buf_rel_all(struct idpf_queue *rxq)
+{
+ struct idpf_adapter *adapter = rxq->vport->adapter;
+
+ dma_free_coherent(&adapter->pdev->dev,
+ rxq->desc_count * IDPF_HDR_BUF_SIZE,
+ rxq->rx_buf.hdr_buf_va,
+ rxq->rx_buf.hdr_buf_pa);
+ rxq->rx_buf.hdr_buf_va = NULL;
+}
+
+/**
+ * idpf_rx_buf_rel_all - Free all Rx buffer resources for a queue
+ * @rxq: queue to be cleaned
+ */
+static void idpf_rx_buf_rel_all(struct idpf_queue *rxq)
+{
+ u16 i;
+
+ /* queue already cleared, nothing to do */
+ if (!rxq->rx_buf.buf)
+ return;
+
+ /* Free all the bufs allocated and given to hw on Rx queue */
+ for (i = 0; i < rxq->desc_count; i++)
+ idpf_rx_page_rel(rxq, &rxq->rx_buf.buf[i]);
+
+ if (rxq->rx_hsplit_en)
+ idpf_rx_hdr_buf_rel_all(rxq);
+
+ page_pool_destroy(rxq->pp);
+ rxq->pp = NULL;
+
+ kfree(rxq->rx_buf.buf);
+ rxq->rx_buf.buf = NULL;
+}
+
+/**
+ * idpf_rx_desc_rel - Free a specific Rx q resources
+ * @rxq: queue to clean the resources from
+ * @bufq: buffer q or completion q
+ * @q_model: single or split q model
+ *
+ * Free a specific rx queue resources
+ */
+static void idpf_rx_desc_rel(struct idpf_queue *rxq, bool bufq, s32 q_model)
+{
+ if (!rxq)
+ return;
+
+ if (!bufq && idpf_is_queue_model_split(q_model) && rxq->skb) {
+ dev_kfree_skb_any(rxq->skb);
+ rxq->skb = NULL;
+ }
+
+ if (bufq || !idpf_is_queue_model_split(q_model))
+ idpf_rx_buf_rel_all(rxq);
+
+ rxq->next_to_alloc = 0;
+ rxq->next_to_clean = 0;
+ rxq->next_to_use = 0;
+ if (!rxq->desc_ring)
+ return;
+
+ dmam_free_coherent(rxq->dev, rxq->size, rxq->desc_ring, rxq->dma);
+ rxq->desc_ring = NULL;
+}
+
+/**
+ * idpf_rx_desc_rel_all - Free Rx Resources for All Queues
+ * @vport: virtual port structure
+ *
+ * Free all rx queues resources
+ */
+static void idpf_rx_desc_rel_all(struct idpf_vport *vport)
+{
+ struct idpf_rxq_group *rx_qgrp;
+ u16 num_rxq;
+ int i, j;
+
+ if (!vport->rxq_grps)
+ return;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ rx_qgrp = &vport->rxq_grps[i];
+
+ if (!idpf_is_queue_model_split(vport->rxq_model)) {
+ for (j = 0; j < rx_qgrp->singleq.num_rxq; j++)
+ idpf_rx_desc_rel(rx_qgrp->singleq.rxqs[j],
+ false, vport->rxq_model);
+ continue;
+ }
+
+ num_rxq = rx_qgrp->splitq.num_rxq_sets;
+ for (j = 0; j < num_rxq; j++)
+ idpf_rx_desc_rel(&rx_qgrp->splitq.rxq_sets[j]->rxq,
+ false, vport->rxq_model);
+
+ if (!rx_qgrp->splitq.bufq_sets)
+ continue;
+
+ for (j = 0; j < vport->num_bufqs_per_qgrp; j++) {
+ struct idpf_bufq_set *bufq_set =
+ &rx_qgrp->splitq.bufq_sets[j];
+
+ idpf_rx_desc_rel(&bufq_set->bufq, true,
+ vport->rxq_model);
+ }
+ }
+}
+
+/**
+ * idpf_rx_buf_hw_update - Store the new tail and head values
+ * @rxq: queue to bump
+ * @val: new head index
+ */
+void idpf_rx_buf_hw_update(struct idpf_queue *rxq, u32 val)
+{
+ rxq->next_to_use = val;
+
+ if (unlikely(!rxq->tail))
+ return;
+
+ /* writel has an implicit memory barrier */
+ writel(val, rxq->tail);
+}
+
+/**
+ * idpf_rx_hdr_buf_alloc_all - Allocate memory for header buffers
+ * @rxq: ring to use
+ *
+ * Returns 0 on success, negative on failure.
+ */
+static int idpf_rx_hdr_buf_alloc_all(struct idpf_queue *rxq)
+{
+ struct idpf_adapter *adapter = rxq->vport->adapter;
+
+ rxq->rx_buf.hdr_buf_va =
+ dma_alloc_coherent(&adapter->pdev->dev,
+ IDPF_HDR_BUF_SIZE * rxq->desc_count,
+ &rxq->rx_buf.hdr_buf_pa,
+ GFP_KERNEL);
+ if (!rxq->rx_buf.hdr_buf_va)
+ return -ENOMEM;
+
+ return 0;
+}
+
+/**
+ * idpf_rx_post_buf_refill - Post buffer id to refill queue
+ * @refillq: refill queue to post to
+ * @buf_id: buffer id to post
+ */
+static void idpf_rx_post_buf_refill(struct idpf_sw_queue *refillq, u16 buf_id)
+{
+ u16 nta = refillq->next_to_alloc;
+
+ /* store the buffer ID and the SW maintained GEN bit to the refillq */
+ refillq->ring[nta] =
+ ((buf_id << IDPF_RX_BI_BUFID_S) & IDPF_RX_BI_BUFID_M) |
+ (!!(test_bit(__IDPF_Q_GEN_CHK, refillq->flags)) <<
+ IDPF_RX_BI_GEN_S);
+
+ if (unlikely(++nta == refillq->desc_count)) {
+ nta = 0;
+ change_bit(__IDPF_Q_GEN_CHK, refillq->flags);
+ }
+ refillq->next_to_alloc = nta;
+}
+
+/**
+ * idpf_rx_post_buf_desc - Post buffer to bufq descriptor ring
+ * @bufq: buffer queue to post to
+ * @buf_id: buffer id to post
+ *
+ * Returns false if buffer could not be allocated, true otherwise.
+ */
+static bool idpf_rx_post_buf_desc(struct idpf_queue *bufq, u16 buf_id)
+{
+ struct virtchnl2_splitq_rx_buf_desc *splitq_rx_desc = NULL;
+ u16 nta = bufq->next_to_alloc;
+ struct idpf_rx_buf *buf;
+ dma_addr_t addr;
+
+ splitq_rx_desc = IDPF_SPLITQ_RX_BUF_DESC(bufq, nta);
+ buf = &bufq->rx_buf.buf[buf_id];
+
+ if (bufq->rx_hsplit_en) {
+ splitq_rx_desc->hdr_addr =
+ cpu_to_le64(bufq->rx_buf.hdr_buf_pa +
+ (u32)buf_id * IDPF_HDR_BUF_SIZE);
+ }
+
+ addr = idpf_alloc_page(bufq->pp, buf, bufq->rx_buf_size);
+ if (unlikely(addr == DMA_MAPPING_ERROR))
+ return false;
+
+ splitq_rx_desc->pkt_addr = cpu_to_le64(addr);
+ splitq_rx_desc->qword0.buf_id = cpu_to_le16(buf_id);
+
+ nta++;
+ if (unlikely(nta == bufq->desc_count))
+ nta = 0;
+ bufq->next_to_alloc = nta;
+
+ return true;
+}
+
+/**
+ * idpf_rx_post_init_bufs - Post initial buffers to bufq
+ * @bufq: buffer queue to post working set to
+ * @working_set: number of buffers to put in working set
+ *
+ * Returns true if @working_set bufs were posted successfully, false otherwise.
+ */
+static bool idpf_rx_post_init_bufs(struct idpf_queue *bufq, u16 working_set)
+{
+ int i;
+
+ for (i = 0; i < working_set; i++) {
+ if (!idpf_rx_post_buf_desc(bufq, i))
+ return false;
+ }
+
+ idpf_rx_buf_hw_update(bufq,
+ bufq->next_to_alloc & ~(bufq->rx_buf_stride - 1));
+
+ return true;
+}
+
+/**
+ * idpf_rx_create_page_pool - Create a page pool
+ * @rxbufq: RX queue to create page pool for
+ *
+ * Returns &page_pool on success, casted -errno on failure
+ */
+static struct page_pool *idpf_rx_create_page_pool(struct idpf_queue *rxbufq)
+{
+ struct page_pool_params pp = {
+ .flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV,
+ .order = 0,
+ .pool_size = rxbufq->desc_count,
+ .nid = NUMA_NO_NODE,
+ .dev = rxbufq->vport->netdev->dev.parent,
+ .max_len = PAGE_SIZE,
+ .dma_dir = DMA_FROM_DEVICE,
+ .offset = 0,
+ };
+
+ if (rxbufq->rx_buf_size == IDPF_RX_BUF_2048)
+ pp.flags |= PP_FLAG_PAGE_FRAG;
+
+ return page_pool_create(&pp);
+}
+
+/**
+ * idpf_rx_buf_alloc_all - Allocate memory for all buffer resources
+ * @rxbufq: queue for which the buffers are allocated; equivalent to
+ * rxq when operating in singleq mode
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_rx_buf_alloc_all(struct idpf_queue *rxbufq)
+{
+ int err = 0;
+
+ /* Allocate book keeping buffers */
+ rxbufq->rx_buf.buf = kcalloc(rxbufq->desc_count,
+ sizeof(struct idpf_rx_buf), GFP_KERNEL);
+ if (!rxbufq->rx_buf.buf) {
+ err = -ENOMEM;
+ goto rx_buf_alloc_all_out;
+ }
+
+ if (rxbufq->rx_hsplit_en) {
+ err = idpf_rx_hdr_buf_alloc_all(rxbufq);
+ if (err)
+ goto rx_buf_alloc_all_out;
+ }
+
+ /* Allocate buffers to be given to HW. */
+ if (idpf_is_queue_model_split(rxbufq->vport->rxq_model)) {
+ int working_set = IDPF_RX_BUFQ_WORKING_SET(rxbufq);
+
+ if (!idpf_rx_post_init_bufs(rxbufq, working_set))
+ err = -ENOMEM;
+ } else {
+ if (idpf_rx_singleq_buf_hw_alloc_all(rxbufq,
+ rxbufq->desc_count - 1))
+ err = -ENOMEM;
+ }
+
+rx_buf_alloc_all_out:
+ if (err)
+ idpf_rx_buf_rel_all(rxbufq);
+
+ return err;
+}
+
+/**
+ * idpf_rx_bufs_init - Initialize page pool, allocate rx bufs, and post to HW
+ * @rxbufq: RX queue to create page pool for
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_rx_bufs_init(struct idpf_queue *rxbufq)
+{
+ struct page_pool *pool;
+
+ pool = idpf_rx_create_page_pool(rxbufq);
+ if (IS_ERR(pool))
+ return PTR_ERR(pool);
+
+ rxbufq->pp = pool;
+
+ return idpf_rx_buf_alloc_all(rxbufq);
+}
+
+/**
+ * idpf_rx_bufs_init_all - Initialize all RX bufs
+ * @vport: virtual port struct
+ *
+ * Returns 0 on success, negative on failure
+ */
+int idpf_rx_bufs_init_all(struct idpf_vport *vport)
+{
+ struct idpf_rxq_group *rx_qgrp;
+ struct idpf_queue *q;
+ int i, j, err;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ rx_qgrp = &vport->rxq_grps[i];
+
+ /* Allocate bufs for the rxq itself in singleq */
+ if (!idpf_is_queue_model_split(vport->rxq_model)) {
+ int num_rxq = rx_qgrp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq; j++) {
+ q = rx_qgrp->singleq.rxqs[j];
+ err = idpf_rx_bufs_init(q);
+ if (err)
+ return err;
+ }
+
+ continue;
+ }
+
+ /* Otherwise, allocate bufs for the buffer queues */
+ for (j = 0; j < vport->num_bufqs_per_qgrp; j++) {
+ q = &rx_qgrp->splitq.bufq_sets[j].bufq;
+ err = idpf_rx_bufs_init(q);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * idpf_rx_desc_alloc - Allocate queue Rx resources
+ * @rxq: Rx queue for which the resources are setup
+ * @bufq: buffer or completion queue
+ * @q_model: single or split queue model
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_rx_desc_alloc(struct idpf_queue *rxq, bool bufq, s32 q_model)
+{
+ struct device *dev = rxq->dev;
+
+ if (bufq)
+ rxq->size = rxq->desc_count *
+ sizeof(struct virtchnl2_splitq_rx_buf_desc);
+ else
+ rxq->size = rxq->desc_count *
+ sizeof(union virtchnl2_rx_desc);
+
+ /* Allocate descriptors and also round up to nearest 4K */
+ rxq->size = ALIGN(rxq->size, 4096);
+ rxq->desc_ring = dmam_alloc_coherent(dev, rxq->size,
+ &rxq->dma, GFP_KERNEL);
+ if (!rxq->desc_ring) {
+ dev_err(dev, "Unable to allocate memory for the Rx descriptor ring, size=%d\n",
+ rxq->size);
+ return -ENOMEM;
+ }
+
+ rxq->next_to_alloc = 0;
+ rxq->next_to_clean = 0;
+ rxq->next_to_use = 0;
+ set_bit(__IDPF_Q_GEN_CHK, rxq->flags);
+
+ return 0;
+}
+
+/**
+ * idpf_rx_desc_alloc_all - allocate all RX queues resources
+ * @vport: virtual port structure
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_rx_desc_alloc_all(struct idpf_vport *vport)
+{
+ struct device *dev = &vport->adapter->pdev->dev;
+ struct idpf_rxq_group *rx_qgrp;
+ struct idpf_queue *q;
+ int i, j, err;
+ u16 num_rxq;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ rx_qgrp = &vport->rxq_grps[i];
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ num_rxq = rx_qgrp->splitq.num_rxq_sets;
+ else
+ num_rxq = rx_qgrp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq; j++) {
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ q = &rx_qgrp->splitq.rxq_sets[j]->rxq;
+ else
+ q = rx_qgrp->singleq.rxqs[j];
+ err = idpf_rx_desc_alloc(q, false, vport->rxq_model);
+ if (err) {
+ dev_err(dev, "Memory allocation for Rx Queue %u failed\n",
+ i);
+ goto err_out;
+ }
+ }
+
+ if (!idpf_is_queue_model_split(vport->rxq_model))
+ continue;
+
+ for (j = 0; j < vport->num_bufqs_per_qgrp; j++) {
+ q = &rx_qgrp->splitq.bufq_sets[j].bufq;
+ err = idpf_rx_desc_alloc(q, true, vport->rxq_model);
+ if (err) {
+ dev_err(dev, "Memory allocation for Rx Buffer Queue %u failed\n",
+ i);
+ goto err_out;
+ }
+ }
+ }
+
+ return 0;
+
+err_out:
+ idpf_rx_desc_rel_all(vport);
+
+ return err;
+}
+
+/**
+ * idpf_txq_group_rel - Release all resources for txq groups
+ * @vport: vport to release txq groups on
+ */
+static void idpf_txq_group_rel(struct idpf_vport *vport)
+{
+ int i, j;
+
+ if (!vport->txq_grps)
+ return;
+
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *txq_grp = &vport->txq_grps[i];
+
+ for (j = 0; j < txq_grp->num_txq; j++) {
+ kfree(txq_grp->txqs[j]);
+ txq_grp->txqs[j] = NULL;
+ }
+ kfree(txq_grp->complq);
+ txq_grp->complq = NULL;
+ }
+ kfree(vport->txq_grps);
+ vport->txq_grps = NULL;
+}
+
+/**
+ * idpf_rxq_sw_queue_rel - Release software queue resources
+ * @rx_qgrp: rx queue group with software queues
+ */
+static void idpf_rxq_sw_queue_rel(struct idpf_rxq_group *rx_qgrp)
+{
+ int i, j;
+
+ for (i = 0; i < rx_qgrp->vport->num_bufqs_per_qgrp; i++) {
+ struct idpf_bufq_set *bufq_set = &rx_qgrp->splitq.bufq_sets[i];
+
+ for (j = 0; j < bufq_set->num_refillqs; j++) {
+ kfree(bufq_set->refillqs[j].ring);
+ bufq_set->refillqs[j].ring = NULL;
+ }
+ kfree(bufq_set->refillqs);
+ bufq_set->refillqs = NULL;
+ }
+}
+
+/**
+ * idpf_rxq_group_rel - Release all resources for rxq groups
+ * @vport: vport to release rxq groups on
+ */
+static void idpf_rxq_group_rel(struct idpf_vport *vport)
+{
+ int i;
+
+ if (!vport->rxq_grps)
+ return;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+ u16 num_rxq;
+ int j;
+
+ if (idpf_is_queue_model_split(vport->rxq_model)) {
+ num_rxq = rx_qgrp->splitq.num_rxq_sets;
+ for (j = 0; j < num_rxq; j++) {
+ kfree(rx_qgrp->splitq.rxq_sets[j]);
+ rx_qgrp->splitq.rxq_sets[j] = NULL;
+ }
+
+ idpf_rxq_sw_queue_rel(rx_qgrp);
+ kfree(rx_qgrp->splitq.bufq_sets);
+ rx_qgrp->splitq.bufq_sets = NULL;
+ } else {
+ num_rxq = rx_qgrp->singleq.num_rxq;
+ for (j = 0; j < num_rxq; j++) {
+ kfree(rx_qgrp->singleq.rxqs[j]);
+ rx_qgrp->singleq.rxqs[j] = NULL;
+ }
+ }
+ }
+ kfree(vport->rxq_grps);
+ vport->rxq_grps = NULL;
+}
+
+/**
+ * idpf_vport_queue_grp_rel_all - Release all queue groups
+ * @vport: vport to release queue groups for
+ */
+static void idpf_vport_queue_grp_rel_all(struct idpf_vport *vport)
+{
+ idpf_txq_group_rel(vport);
+ idpf_rxq_group_rel(vport);
+}
+
+/**
+ * idpf_vport_queues_rel - Free memory for all queues
+ * @vport: virtual port
+ *
+ * Free the memory allocated for queues associated to a vport
+ */
+void idpf_vport_queues_rel(struct idpf_vport *vport)
+{
+ idpf_tx_desc_rel_all(vport);
+ idpf_rx_desc_rel_all(vport);
+ idpf_vport_queue_grp_rel_all(vport);
+
+ kfree(vport->txqs);
+ vport->txqs = NULL;
+}
+
+/**
+ * idpf_vport_init_fast_path_txqs - Initialize fast path txq array
+ * @vport: vport to init txqs on
+ *
+ * We get a queue index from skb->queue_mapping and we need a fast way to
+ * dereference the queue from queue groups. This allows us to quickly pull a
+ * txq based on a queue index.
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_vport_init_fast_path_txqs(struct idpf_vport *vport)
+{
+ int i, j, k = 0;
+
+ vport->txqs = kcalloc(vport->num_txq, sizeof(struct idpf_queue *),
+ GFP_KERNEL);
+
+ if (!vport->txqs)
+ return -ENOMEM;
+
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *tx_grp = &vport->txq_grps[i];
+
+ for (j = 0; j < tx_grp->num_txq; j++, k++) {
+ vport->txqs[k] = tx_grp->txqs[j];
+ vport->txqs[k]->idx = k;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * idpf_vport_init_num_qs - Initialize number of queues
+ * @vport: vport to initialize queues
+ * @vport_msg: data to be filled into vport
+ */
+void idpf_vport_init_num_qs(struct idpf_vport *vport,
+ struct virtchnl2_create_vport *vport_msg)
+{
+ struct idpf_vport_user_config_data *config_data;
+ u16 idx = vport->idx;
+
+ config_data = &vport->adapter->vport_config[idx]->user_config;
+ vport->num_txq = le16_to_cpu(vport_msg->num_tx_q);
+ vport->num_rxq = le16_to_cpu(vport_msg->num_rx_q);
+ /* number of txqs and rxqs in config data will be zeros only in the
+ * driver load path and we dont update them there after
+ */
+ if (!config_data->num_req_tx_qs && !config_data->num_req_rx_qs) {
+ config_data->num_req_tx_qs = le16_to_cpu(vport_msg->num_tx_q);
+ config_data->num_req_rx_qs = le16_to_cpu(vport_msg->num_rx_q);
+ }
+
+ if (idpf_is_queue_model_split(vport->txq_model))
+ vport->num_complq = le16_to_cpu(vport_msg->num_tx_complq);
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ vport->num_bufq = le16_to_cpu(vport_msg->num_rx_bufq);
+
+ /* Adjust number of buffer queues per Rx queue group. */
+ if (!idpf_is_queue_model_split(vport->rxq_model)) {
+ vport->num_bufqs_per_qgrp = 0;
+ vport->bufq_size[0] = IDPF_RX_BUF_2048;
+
+ return;
+ }
+
+ vport->num_bufqs_per_qgrp = IDPF_MAX_BUFQS_PER_RXQ_GRP;
+ /* Bufq[0] default buffer size is 4K
+ * Bufq[1] default buffer size is 2K
+ */
+ vport->bufq_size[0] = IDPF_RX_BUF_4096;
+ vport->bufq_size[1] = IDPF_RX_BUF_2048;
+}
+
+/**
+ * idpf_vport_calc_num_q_desc - Calculate number of queue groups
+ * @vport: vport to calculate q groups for
+ */
+void idpf_vport_calc_num_q_desc(struct idpf_vport *vport)
+{
+ struct idpf_vport_user_config_data *config_data;
+ int num_bufqs = vport->num_bufqs_per_qgrp;
+ u32 num_req_txq_desc, num_req_rxq_desc;
+ u16 idx = vport->idx;
+ int i;
+
+ config_data = &vport->adapter->vport_config[idx]->user_config;
+ num_req_txq_desc = config_data->num_req_txq_desc;
+ num_req_rxq_desc = config_data->num_req_rxq_desc;
+
+ vport->complq_desc_count = 0;
+ if (num_req_txq_desc) {
+ vport->txq_desc_count = num_req_txq_desc;
+ if (idpf_is_queue_model_split(vport->txq_model)) {
+ vport->complq_desc_count = num_req_txq_desc;
+ if (vport->complq_desc_count < IDPF_MIN_TXQ_COMPLQ_DESC)
+ vport->complq_desc_count =
+ IDPF_MIN_TXQ_COMPLQ_DESC;
+ }
+ } else {
+ vport->txq_desc_count = IDPF_DFLT_TX_Q_DESC_COUNT;
+ if (idpf_is_queue_model_split(vport->txq_model))
+ vport->complq_desc_count =
+ IDPF_DFLT_TX_COMPLQ_DESC_COUNT;
+ }
+
+ if (num_req_rxq_desc)
+ vport->rxq_desc_count = num_req_rxq_desc;
+ else
+ vport->rxq_desc_count = IDPF_DFLT_RX_Q_DESC_COUNT;
+
+ for (i = 0; i < num_bufqs; i++) {
+ if (!vport->bufq_desc_count[i])
+ vport->bufq_desc_count[i] =
+ IDPF_RX_BUFQ_DESC_COUNT(vport->rxq_desc_count,
+ num_bufqs);
+ }
+}
+
+/**
+ * idpf_vport_calc_total_qs - Calculate total number of queues
+ * @adapter: private data struct
+ * @vport_idx: vport idx to retrieve vport pointer
+ * @vport_msg: message to fill with data
+ * @max_q: vport max queue info
+ *
+ * Return 0 on success, error value on failure.
+ */
+int idpf_vport_calc_total_qs(struct idpf_adapter *adapter, u16 vport_idx,
+ struct virtchnl2_create_vport *vport_msg,
+ struct idpf_vport_max_q *max_q)
+{
+ int dflt_splitq_txq_grps = 0, dflt_singleq_txqs = 0;
+ int dflt_splitq_rxq_grps = 0, dflt_singleq_rxqs = 0;
+ u16 num_req_tx_qs = 0, num_req_rx_qs = 0;
+ struct idpf_vport_config *vport_config;
+ u16 num_txq_grps, num_rxq_grps;
+ u32 num_qs;
+
+ vport_config = adapter->vport_config[vport_idx];
+ if (vport_config) {
+ num_req_tx_qs = vport_config->user_config.num_req_tx_qs;
+ num_req_rx_qs = vport_config->user_config.num_req_rx_qs;
+ } else {
+ int num_cpus;
+
+ /* Restrict num of queues to cpus online as a default
+ * configuration to give best performance. User can always
+ * override to a max number of queues via ethtool.
+ */
+ num_cpus = num_online_cpus();
+
+ dflt_splitq_txq_grps = min_t(int, max_q->max_txq, num_cpus);
+ dflt_singleq_txqs = min_t(int, max_q->max_txq, num_cpus);
+ dflt_splitq_rxq_grps = min_t(int, max_q->max_rxq, num_cpus);
+ dflt_singleq_rxqs = min_t(int, max_q->max_rxq, num_cpus);
+ }
+
+ if (idpf_is_queue_model_split(le16_to_cpu(vport_msg->txq_model))) {
+ num_txq_grps = num_req_tx_qs ? num_req_tx_qs : dflt_splitq_txq_grps;
+ vport_msg->num_tx_complq = cpu_to_le16(num_txq_grps *
+ IDPF_COMPLQ_PER_GROUP);
+ vport_msg->num_tx_q = cpu_to_le16(num_txq_grps *
+ IDPF_DFLT_SPLITQ_TXQ_PER_GROUP);
+ } else {
+ num_txq_grps = IDPF_DFLT_SINGLEQ_TX_Q_GROUPS;
+ num_qs = num_txq_grps * (num_req_tx_qs ? num_req_tx_qs :
+ dflt_singleq_txqs);
+ vport_msg->num_tx_q = cpu_to_le16(num_qs);
+ vport_msg->num_tx_complq = 0;
+ }
+ if (idpf_is_queue_model_split(le16_to_cpu(vport_msg->rxq_model))) {
+ num_rxq_grps = num_req_rx_qs ? num_req_rx_qs : dflt_splitq_rxq_grps;
+ vport_msg->num_rx_bufq = cpu_to_le16(num_rxq_grps *
+ IDPF_MAX_BUFQS_PER_RXQ_GRP);
+ vport_msg->num_rx_q = cpu_to_le16(num_rxq_grps *
+ IDPF_DFLT_SPLITQ_RXQ_PER_GROUP);
+ } else {
+ num_rxq_grps = IDPF_DFLT_SINGLEQ_RX_Q_GROUPS;
+ num_qs = num_rxq_grps * (num_req_rx_qs ? num_req_rx_qs :
+ dflt_singleq_rxqs);
+ vport_msg->num_rx_q = cpu_to_le16(num_qs);
+ vport_msg->num_rx_bufq = 0;
+ }
+
+ return 0;
+}
+
+/**
+ * idpf_vport_calc_num_q_groups - Calculate number of queue groups
+ * @vport: vport to calculate q groups for
+ */
+void idpf_vport_calc_num_q_groups(struct idpf_vport *vport)
+{
+ if (idpf_is_queue_model_split(vport->txq_model))
+ vport->num_txq_grp = vport->num_txq;
+ else
+ vport->num_txq_grp = IDPF_DFLT_SINGLEQ_TX_Q_GROUPS;
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ vport->num_rxq_grp = vport->num_rxq;
+ else
+ vport->num_rxq_grp = IDPF_DFLT_SINGLEQ_RX_Q_GROUPS;
+}
+
+/**
+ * idpf_vport_calc_numq_per_grp - Calculate number of queues per group
+ * @vport: vport to calculate queues for
+ * @num_txq: return parameter for number of TX queues
+ * @num_rxq: return parameter for number of RX queues
+ */
+static void idpf_vport_calc_numq_per_grp(struct idpf_vport *vport,
+ u16 *num_txq, u16 *num_rxq)
+{
+ if (idpf_is_queue_model_split(vport->txq_model))
+ *num_txq = IDPF_DFLT_SPLITQ_TXQ_PER_GROUP;
+ else
+ *num_txq = vport->num_txq;
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ *num_rxq = IDPF_DFLT_SPLITQ_RXQ_PER_GROUP;
+ else
+ *num_rxq = vport->num_rxq;
+}
+
+/**
+ * idpf_rxq_set_descids - set the descids supported by this queue
+ * @vport: virtual port data structure
+ * @q: rx queue for which descids are set
+ *
+ */
+static void idpf_rxq_set_descids(struct idpf_vport *vport, struct idpf_queue *q)
+{
+ if (vport->rxq_model == VIRTCHNL2_QUEUE_MODEL_SPLIT) {
+ q->rxdids = VIRTCHNL2_RXDID_2_FLEX_SPLITQ_M;
+ } else {
+ if (vport->base_rxd)
+ q->rxdids = VIRTCHNL2_RXDID_1_32B_BASE_M;
+ else
+ q->rxdids = VIRTCHNL2_RXDID_2_FLEX_SQ_NIC_M;
+ }
+}
+
+/**
+ * idpf_txq_group_alloc - Allocate all txq group resources
+ * @vport: vport to allocate txq groups for
+ * @num_txq: number of txqs to allocate for each group
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_txq_group_alloc(struct idpf_vport *vport, u16 num_txq)
+{
+ bool flow_sch_en;
+ int err, i;
+
+ vport->txq_grps = kcalloc(vport->num_txq_grp,
+ sizeof(*vport->txq_grps), GFP_KERNEL);
+ if (!vport->txq_grps)
+ return -ENOMEM;
+
+ flow_sch_en = !idpf_is_cap_ena(vport->adapter, IDPF_OTHER_CAPS,
+ VIRTCHNL2_CAP_SPLITQ_QSCHED);
+
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *tx_qgrp = &vport->txq_grps[i];
+ struct idpf_adapter *adapter = vport->adapter;
+ int j;
+
+ tx_qgrp->vport = vport;
+ tx_qgrp->num_txq = num_txq;
+
+ for (j = 0; j < tx_qgrp->num_txq; j++) {
+ tx_qgrp->txqs[j] = kzalloc(sizeof(*tx_qgrp->txqs[j]),
+ GFP_KERNEL);
+ if (!tx_qgrp->txqs[j]) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+ }
+
+ for (j = 0; j < tx_qgrp->num_txq; j++) {
+ struct idpf_queue *q = tx_qgrp->txqs[j];
+
+ q->dev = &adapter->pdev->dev;
+ q->desc_count = vport->txq_desc_count;
+ q->tx_max_bufs = idpf_get_max_tx_bufs(adapter);
+ q->tx_min_pkt_len = idpf_get_min_tx_pkt_len(adapter);
+ q->vport = vport;
+ q->txq_grp = tx_qgrp;
+ hash_init(q->sched_buf_hash);
+
+ if (flow_sch_en)
+ set_bit(__IDPF_Q_FLOW_SCH_EN, q->flags);
+ }
+
+ if (!idpf_is_queue_model_split(vport->txq_model))
+ continue;
+
+ tx_qgrp->complq = kcalloc(IDPF_COMPLQ_PER_GROUP,
+ sizeof(*tx_qgrp->complq),
+ GFP_KERNEL);
+ if (!tx_qgrp->complq) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ tx_qgrp->complq->dev = &adapter->pdev->dev;
+ tx_qgrp->complq->desc_count = vport->complq_desc_count;
+ tx_qgrp->complq->vport = vport;
+ tx_qgrp->complq->txq_grp = tx_qgrp;
+
+ if (flow_sch_en)
+ __set_bit(__IDPF_Q_FLOW_SCH_EN, tx_qgrp->complq->flags);
+ }
+
+ return 0;
+
+err_alloc:
+ idpf_txq_group_rel(vport);
+
+ return err;
+}
+
+/**
+ * idpf_rxq_group_alloc - Allocate all rxq group resources
+ * @vport: vport to allocate rxq groups for
+ * @num_rxq: number of rxqs to allocate for each group
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_rxq_group_alloc(struct idpf_vport *vport, u16 num_rxq)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct idpf_queue *q;
+ int i, k, err = 0;
+
+ vport->rxq_grps = kcalloc(vport->num_rxq_grp,
+ sizeof(struct idpf_rxq_group), GFP_KERNEL);
+ if (!vport->rxq_grps)
+ return -ENOMEM;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+ int j;
+
+ rx_qgrp->vport = vport;
+ if (!idpf_is_queue_model_split(vport->rxq_model)) {
+ rx_qgrp->singleq.num_rxq = num_rxq;
+ for (j = 0; j < num_rxq; j++) {
+ rx_qgrp->singleq.rxqs[j] =
+ kzalloc(sizeof(*rx_qgrp->singleq.rxqs[j]),
+ GFP_KERNEL);
+ if (!rx_qgrp->singleq.rxqs[j]) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+ }
+ goto skip_splitq_rx_init;
+ }
+ rx_qgrp->splitq.num_rxq_sets = num_rxq;
+
+ for (j = 0; j < num_rxq; j++) {
+ rx_qgrp->splitq.rxq_sets[j] =
+ kzalloc(sizeof(struct idpf_rxq_set),
+ GFP_KERNEL);
+ if (!rx_qgrp->splitq.rxq_sets[j]) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+ }
+
+ rx_qgrp->splitq.bufq_sets = kcalloc(vport->num_bufqs_per_qgrp,
+ sizeof(struct idpf_bufq_set),
+ GFP_KERNEL);
+ if (!rx_qgrp->splitq.bufq_sets) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ for (j = 0; j < vport->num_bufqs_per_qgrp; j++) {
+ struct idpf_bufq_set *bufq_set =
+ &rx_qgrp->splitq.bufq_sets[j];
+ int swq_size = sizeof(struct idpf_sw_queue);
+
+ q = &rx_qgrp->splitq.bufq_sets[j].bufq;
+ q->dev = &adapter->pdev->dev;
+ q->desc_count = vport->bufq_desc_count[j];
+ q->vport = vport;
+ q->rxq_grp = rx_qgrp;
+ q->idx = j;
+ q->rx_buf_size = vport->bufq_size[j];
+ q->rx_buffer_low_watermark = IDPF_LOW_WATERMARK;
+ q->rx_buf_stride = IDPF_RX_BUF_STRIDE;
+ if (idpf_is_cap_ena_all(adapter, IDPF_HSPLIT_CAPS,
+ IDPF_CAP_HSPLIT) &&
+ idpf_is_queue_model_split(vport->rxq_model)) {
+ q->rx_hsplit_en = true;
+ q->rx_hbuf_size = IDPF_HDR_BUF_SIZE;
+ }
+
+ bufq_set->num_refillqs = num_rxq;
+ bufq_set->refillqs = kcalloc(num_rxq, swq_size,
+ GFP_KERNEL);
+ if (!bufq_set->refillqs) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+ for (k = 0; k < bufq_set->num_refillqs; k++) {
+ struct idpf_sw_queue *refillq =
+ &bufq_set->refillqs[k];
+
+ refillq->dev = &vport->adapter->pdev->dev;
+ refillq->desc_count =
+ vport->bufq_desc_count[j];
+ set_bit(__IDPF_Q_GEN_CHK, refillq->flags);
+ set_bit(__IDPF_RFLQ_GEN_CHK, refillq->flags);
+ refillq->ring = kcalloc(refillq->desc_count,
+ sizeof(u16),
+ GFP_KERNEL);
+ if (!refillq->ring) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+ }
+ }
+
+skip_splitq_rx_init:
+ for (j = 0; j < num_rxq; j++) {
+ if (!idpf_is_queue_model_split(vport->rxq_model)) {
+ q = rx_qgrp->singleq.rxqs[j];
+ goto setup_rxq;
+ }
+ q = &rx_qgrp->splitq.rxq_sets[j]->rxq;
+ rx_qgrp->splitq.rxq_sets[j]->refillq0 =
+ &rx_qgrp->splitq.bufq_sets[0].refillqs[j];
+ if (vport->num_bufqs_per_qgrp > IDPF_SINGLE_BUFQ_PER_RXQ_GRP)
+ rx_qgrp->splitq.rxq_sets[j]->refillq1 =
+ &rx_qgrp->splitq.bufq_sets[1].refillqs[j];
+
+ if (idpf_is_cap_ena_all(adapter, IDPF_HSPLIT_CAPS,
+ IDPF_CAP_HSPLIT) &&
+ idpf_is_queue_model_split(vport->rxq_model)) {
+ q->rx_hsplit_en = true;
+ q->rx_hbuf_size = IDPF_HDR_BUF_SIZE;
+ }
+
+setup_rxq:
+ q->dev = &adapter->pdev->dev;
+ q->desc_count = vport->rxq_desc_count;
+ q->vport = vport;
+ q->rxq_grp = rx_qgrp;
+ q->idx = (i * num_rxq) + j;
+ /* In splitq mode, RXQ buffer size should be
+ * set to that of the first buffer queue
+ * associated with this RXQ
+ */
+ q->rx_buf_size = vport->bufq_size[0];
+ q->rx_buffer_low_watermark = IDPF_LOW_WATERMARK;
+ q->rx_max_pkt_size = vport->netdev->mtu +
+ IDPF_PACKET_HDR_PAD;
+ idpf_rxq_set_descids(vport, q);
+ }
+ }
+
+err_alloc:
+ if (err)
+ idpf_rxq_group_rel(vport);
+
+ return err;
+}
+
+/**
+ * idpf_vport_queue_grp_alloc_all - Allocate all queue groups/resources
+ * @vport: vport with qgrps to allocate
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_vport_queue_grp_alloc_all(struct idpf_vport *vport)
+{
+ u16 num_txq, num_rxq;
+ int err;
+
+ idpf_vport_calc_numq_per_grp(vport, &num_txq, &num_rxq);
+
+ err = idpf_txq_group_alloc(vport, num_txq);
+ if (err)
+ goto err_out;
+
+ err = idpf_rxq_group_alloc(vport, num_rxq);
+ if (err)
+ goto err_out;
+
+ return 0;
+
+err_out:
+ idpf_vport_queue_grp_rel_all(vport);
+
+ return err;
+}
+
+/**
+ * idpf_vport_queues_alloc - Allocate memory for all queues
+ * @vport: virtual port
+ *
+ * Allocate memory for queues associated with a vport. Returns 0 on success,
+ * negative on failure.
+ */
+int idpf_vport_queues_alloc(struct idpf_vport *vport)
+{
+ int err;
+
+ err = idpf_vport_queue_grp_alloc_all(vport);
+ if (err)
+ goto err_out;
+
+ err = idpf_tx_desc_alloc_all(vport);
+ if (err)
+ goto err_out;
+
+ err = idpf_rx_desc_alloc_all(vport);
+ if (err)
+ goto err_out;
+
+ err = idpf_vport_init_fast_path_txqs(vport);
+ if (err)
+ goto err_out;
+
+ return 0;
+
+err_out:
+ idpf_vport_queues_rel(vport);
+
+ return err;
+}
+
+/**
+ * idpf_tx_handle_sw_marker - Handle queue marker packet
+ * @tx_q: tx queue to handle software marker
+ */
+static void idpf_tx_handle_sw_marker(struct idpf_queue *tx_q)
+{
+ struct idpf_vport *vport = tx_q->vport;
+ int i;
+
+ clear_bit(__IDPF_Q_SW_MARKER, tx_q->flags);
+ /* Hardware must write marker packets to all queues associated with
+ * completion queues. So check if all queues received marker packets
+ */
+ for (i = 0; i < vport->num_txq; i++)
+ /* If we're still waiting on any other TXQ marker completions,
+ * just return now since we cannot wake up the marker_wq yet.
+ */
+ if (test_bit(__IDPF_Q_SW_MARKER, vport->txqs[i]->flags))
+ return;
+
+ /* Drain complete */
+ set_bit(IDPF_VPORT_SW_MARKER, vport->flags);
+ wake_up(&vport->sw_marker_wq);
+}
+
+/**
+ * idpf_tx_splitq_clean_hdr - Clean TX buffer resources for header portion of
+ * packet
+ * @tx_q: tx queue to clean buffer from
+ * @tx_buf: buffer to be cleaned
+ * @cleaned: pointer to stats struct to track cleaned packets/bytes
+ * @napi_budget: Used to determine if we are in netpoll
+ */
+static void idpf_tx_splitq_clean_hdr(struct idpf_queue *tx_q,
+ struct idpf_tx_buf *tx_buf,
+ struct idpf_cleaned_stats *cleaned,
+ int napi_budget)
+{
+ napi_consume_skb(tx_buf->skb, napi_budget);
+
+ if (dma_unmap_len(tx_buf, len)) {
+ dma_unmap_single(tx_q->dev,
+ dma_unmap_addr(tx_buf, dma),
+ dma_unmap_len(tx_buf, len),
+ DMA_TO_DEVICE);
+
+ dma_unmap_len_set(tx_buf, len, 0);
+ }
+
+ /* clear tx_buf data */
+ tx_buf->skb = NULL;
+
+ cleaned->bytes += tx_buf->bytecount;
+ cleaned->packets += tx_buf->gso_segs;
+}
+
+/**
+ * idpf_tx_clean_stashed_bufs - clean bufs that were stored for
+ * out of order completions
+ * @txq: queue to clean
+ * @compl_tag: completion tag of packet to clean (from completion descriptor)
+ * @cleaned: pointer to stats struct to track cleaned packets/bytes
+ * @budget: Used to determine if we are in netpoll
+ */
+static void idpf_tx_clean_stashed_bufs(struct idpf_queue *txq, u16 compl_tag,
+ struct idpf_cleaned_stats *cleaned,
+ int budget)
+{
+ struct idpf_tx_stash *stash;
+ struct hlist_node *tmp_buf;
+
+ /* Buffer completion */
+ hash_for_each_possible_safe(txq->sched_buf_hash, stash, tmp_buf,
+ hlist, compl_tag) {
+ if (unlikely(stash->buf.compl_tag != (int)compl_tag))
+ continue;
+
+ if (stash->buf.skb) {
+ idpf_tx_splitq_clean_hdr(txq, &stash->buf, cleaned,
+ budget);
+ } else if (dma_unmap_len(&stash->buf, len)) {
+ dma_unmap_page(txq->dev,
+ dma_unmap_addr(&stash->buf, dma),
+ dma_unmap_len(&stash->buf, len),
+ DMA_TO_DEVICE);
+ dma_unmap_len_set(&stash->buf, len, 0);
+ }
+
+ /* Push shadow buf back onto stack */
+ idpf_buf_lifo_push(&txq->buf_stack, stash);
+
+ hash_del(&stash->hlist);
+ }
+}
+
+/**
+ * idpf_stash_flow_sch_buffers - store buffer parameters info to be freed at a
+ * later time (only relevant for flow scheduling mode)
+ * @txq: Tx queue to clean
+ * @tx_buf: buffer to store
+ */
+static int idpf_stash_flow_sch_buffers(struct idpf_queue *txq,
+ struct idpf_tx_buf *tx_buf)
+{
+ struct idpf_tx_stash *stash;
+
+ if (unlikely(!dma_unmap_addr(tx_buf, dma) &&
+ !dma_unmap_len(tx_buf, len)))
+ return 0;
+
+ stash = idpf_buf_lifo_pop(&txq->buf_stack);
+ if (unlikely(!stash)) {
+ net_err_ratelimited("%s: No out-of-order TX buffers left!\n",
+ txq->vport->netdev->name);
+
+ return -ENOMEM;
+ }
+
+ /* Store buffer params in shadow buffer */
+ stash->buf.skb = tx_buf->skb;
+ stash->buf.bytecount = tx_buf->bytecount;
+ stash->buf.gso_segs = tx_buf->gso_segs;
+ dma_unmap_addr_set(&stash->buf, dma, dma_unmap_addr(tx_buf, dma));
+ dma_unmap_len_set(&stash->buf, len, dma_unmap_len(tx_buf, len));
+ stash->buf.compl_tag = tx_buf->compl_tag;
+
+ /* Add buffer to buf_hash table to be freed later */
+ hash_add(txq->sched_buf_hash, &stash->hlist, stash->buf.compl_tag);
+
+ memset(tx_buf, 0, sizeof(struct idpf_tx_buf));
+
+ /* Reinitialize buf_id portion of tag */
+ tx_buf->compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG;
+
+ return 0;
+}
+
+#define idpf_tx_splitq_clean_bump_ntc(txq, ntc, desc, buf) \
+do { \
+ (ntc)++; \
+ if (unlikely(!(ntc))) { \
+ ntc -= (txq)->desc_count; \
+ buf = (txq)->tx_buf; \
+ desc = IDPF_FLEX_TX_DESC(txq, 0); \
+ } else { \
+ (buf)++; \
+ (desc)++; \
+ } \
+} while (0)
+
+/**
+ * idpf_tx_splitq_clean - Reclaim resources from buffer queue
+ * @tx_q: Tx queue to clean
+ * @end: queue index until which it should be cleaned
+ * @napi_budget: Used to determine if we are in netpoll
+ * @cleaned: pointer to stats struct to track cleaned packets/bytes
+ * @descs_only: true if queue is using flow-based scheduling and should
+ * not clean buffers at this time
+ *
+ * Cleans the queue descriptor ring. If the queue is using queue-based
+ * scheduling, the buffers will be cleaned as well. If the queue is using
+ * flow-based scheduling, only the descriptors are cleaned at this time.
+ * Separate packet completion events will be reported on the completion queue,
+ * and the buffers will be cleaned separately. The stats are not updated from
+ * this function when using flow-based scheduling.
+ */
+static void idpf_tx_splitq_clean(struct idpf_queue *tx_q, u16 end,
+ int napi_budget,
+ struct idpf_cleaned_stats *cleaned,
+ bool descs_only)
+{
+ union idpf_tx_flex_desc *next_pending_desc = NULL;
+ union idpf_tx_flex_desc *tx_desc;
+ s16 ntc = tx_q->next_to_clean;
+ struct idpf_tx_buf *tx_buf;
+
+ tx_desc = IDPF_FLEX_TX_DESC(tx_q, ntc);
+ next_pending_desc = IDPF_FLEX_TX_DESC(tx_q, end);
+ tx_buf = &tx_q->tx_buf[ntc];
+ ntc -= tx_q->desc_count;
+
+ while (tx_desc != next_pending_desc) {
+ union idpf_tx_flex_desc *eop_desc;
+
+ /* If this entry in the ring was used as a context descriptor,
+ * it's corresponding entry in the buffer ring will have an
+ * invalid completion tag since no buffer was used. We can
+ * skip this descriptor since there is no buffer to clean.
+ */
+ if (unlikely(tx_buf->compl_tag == IDPF_SPLITQ_TX_INVAL_COMPL_TAG))
+ goto fetch_next_txq_desc;
+
+ eop_desc = (union idpf_tx_flex_desc *)tx_buf->next_to_watch;
+
+ /* clear next_to_watch to prevent false hangs */
+ tx_buf->next_to_watch = NULL;
+
+ if (descs_only) {
+ if (idpf_stash_flow_sch_buffers(tx_q, tx_buf))
+ goto tx_splitq_clean_out;
+
+ while (tx_desc != eop_desc) {
+ idpf_tx_splitq_clean_bump_ntc(tx_q, ntc,
+ tx_desc, tx_buf);
+
+ if (dma_unmap_len(tx_buf, len)) {
+ if (idpf_stash_flow_sch_buffers(tx_q,
+ tx_buf))
+ goto tx_splitq_clean_out;
+ }
+ }
+ } else {
+ idpf_tx_splitq_clean_hdr(tx_q, tx_buf, cleaned,
+ napi_budget);
+
+ /* unmap remaining buffers */
+ while (tx_desc != eop_desc) {
+ idpf_tx_splitq_clean_bump_ntc(tx_q, ntc,
+ tx_desc, tx_buf);
+
+ /* unmap any remaining paged data */
+ if (dma_unmap_len(tx_buf, len)) {
+ dma_unmap_page(tx_q->dev,
+ dma_unmap_addr(tx_buf, dma),
+ dma_unmap_len(tx_buf, len),
+ DMA_TO_DEVICE);
+ dma_unmap_len_set(tx_buf, len, 0);
+ }
+ }
+ }
+
+fetch_next_txq_desc:
+ idpf_tx_splitq_clean_bump_ntc(tx_q, ntc, tx_desc, tx_buf);
+ }
+
+tx_splitq_clean_out:
+ ntc += tx_q->desc_count;
+ tx_q->next_to_clean = ntc;
+}
+
+#define idpf_tx_clean_buf_ring_bump_ntc(txq, ntc, buf) \
+do { \
+ (buf)++; \
+ (ntc)++; \
+ if (unlikely((ntc) == (txq)->desc_count)) { \
+ buf = (txq)->tx_buf; \
+ ntc = 0; \
+ } \
+} while (0)
+
+/**
+ * idpf_tx_clean_buf_ring - clean flow scheduling TX queue buffers
+ * @txq: queue to clean
+ * @compl_tag: completion tag of packet to clean (from completion descriptor)
+ * @cleaned: pointer to stats struct to track cleaned packets/bytes
+ * @budget: Used to determine if we are in netpoll
+ *
+ * Cleans all buffers associated with the input completion tag either from the
+ * TX buffer ring or from the hash table if the buffers were previously
+ * stashed. Returns the byte/segment count for the cleaned packet associated
+ * this completion tag.
+ */
+static bool idpf_tx_clean_buf_ring(struct idpf_queue *txq, u16 compl_tag,
+ struct idpf_cleaned_stats *cleaned,
+ int budget)
+{
+ u16 idx = compl_tag & txq->compl_tag_bufid_m;
+ struct idpf_tx_buf *tx_buf = NULL;
+ u16 ntc = txq->next_to_clean;
+ u16 num_descs_cleaned = 0;
+ u16 orig_idx = idx;
+
+ tx_buf = &txq->tx_buf[idx];
+
+ while (tx_buf->compl_tag == (int)compl_tag) {
+ if (tx_buf->skb) {
+ idpf_tx_splitq_clean_hdr(txq, tx_buf, cleaned, budget);
+ } else if (dma_unmap_len(tx_buf, len)) {
+ dma_unmap_page(txq->dev,
+ dma_unmap_addr(tx_buf, dma),
+ dma_unmap_len(tx_buf, len),
+ DMA_TO_DEVICE);
+ dma_unmap_len_set(tx_buf, len, 0);
+ }
+
+ memset(tx_buf, 0, sizeof(struct idpf_tx_buf));
+ tx_buf->compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG;
+
+ num_descs_cleaned++;
+ idpf_tx_clean_buf_ring_bump_ntc(txq, idx, tx_buf);
+ }
+
+ /* If we didn't clean anything on the ring for this completion, there's
+ * nothing more to do.
+ */
+ if (unlikely(!num_descs_cleaned))
+ return false;
+
+ /* Otherwise, if we did clean a packet on the ring directly, it's safe
+ * to assume that the descriptors starting from the original
+ * next_to_clean up until the previously cleaned packet can be reused.
+ * Therefore, we will go back in the ring and stash any buffers still
+ * in the ring into the hash table to be cleaned later.
+ */
+ tx_buf = &txq->tx_buf[ntc];
+ while (tx_buf != &txq->tx_buf[orig_idx]) {
+ idpf_stash_flow_sch_buffers(txq, tx_buf);
+ idpf_tx_clean_buf_ring_bump_ntc(txq, ntc, tx_buf);
+ }
+
+ /* Finally, update next_to_clean to reflect the work that was just done
+ * on the ring, if any. If the packet was only cleaned from the hash
+ * table, the ring will not be impacted, therefore we should not touch
+ * next_to_clean. The updated idx is used here
+ */
+ txq->next_to_clean = idx;
+
+ return true;
+}
+
+/**
+ * idpf_tx_handle_rs_completion - clean a single packet and all of its buffers
+ * whether on the buffer ring or in the hash table
+ * @txq: Tx ring to clean
+ * @desc: pointer to completion queue descriptor to extract completion
+ * information from
+ * @cleaned: pointer to stats struct to track cleaned packets/bytes
+ * @budget: Used to determine if we are in netpoll
+ *
+ * Returns bytes/packets cleaned
+ */
+static void idpf_tx_handle_rs_completion(struct idpf_queue *txq,
+ struct idpf_splitq_tx_compl_desc *desc,
+ struct idpf_cleaned_stats *cleaned,
+ int budget)
+{
+ u16 compl_tag;
+
+ if (!test_bit(__IDPF_Q_FLOW_SCH_EN, txq->flags)) {
+ u16 head = le16_to_cpu(desc->q_head_compl_tag.q_head);
+
+ return idpf_tx_splitq_clean(txq, head, budget, cleaned, false);
+ }
+
+ compl_tag = le16_to_cpu(desc->q_head_compl_tag.compl_tag);
+
+ /* If we didn't clean anything on the ring, this packet must be
+ * in the hash table. Go clean it there.
+ */
+ if (!idpf_tx_clean_buf_ring(txq, compl_tag, cleaned, budget))
+ idpf_tx_clean_stashed_bufs(txq, compl_tag, cleaned, budget);
+}
+
+/**
+ * idpf_tx_clean_complq - Reclaim resources on completion queue
+ * @complq: Tx ring to clean
+ * @budget: Used to determine if we are in netpoll
+ * @cleaned: returns number of packets cleaned
+ *
+ * Returns true if there's any budget left (e.g. the clean is finished)
+ */
+static bool idpf_tx_clean_complq(struct idpf_queue *complq, int budget,
+ int *cleaned)
+{
+ struct idpf_splitq_tx_compl_desc *tx_desc;
+ struct idpf_vport *vport = complq->vport;
+ s16 ntc = complq->next_to_clean;
+ struct idpf_netdev_priv *np;
+ unsigned int complq_budget;
+ bool complq_ok = true;
+ int i;
+
+ complq_budget = vport->compln_clean_budget;
+ tx_desc = IDPF_SPLITQ_TX_COMPLQ_DESC(complq, ntc);
+ ntc -= complq->desc_count;
+
+ do {
+ struct idpf_cleaned_stats cleaned_stats = { };
+ struct idpf_queue *tx_q;
+ int rel_tx_qid;
+ u16 hw_head;
+ u8 ctype; /* completion type */
+ u16 gen;
+
+ /* if the descriptor isn't done, no work yet to do */
+ gen = (le16_to_cpu(tx_desc->qid_comptype_gen) &
+ IDPF_TXD_COMPLQ_GEN_M) >> IDPF_TXD_COMPLQ_GEN_S;
+ if (test_bit(__IDPF_Q_GEN_CHK, complq->flags) != gen)
+ break;
+
+ /* Find necessary info of TX queue to clean buffers */
+ rel_tx_qid = (le16_to_cpu(tx_desc->qid_comptype_gen) &
+ IDPF_TXD_COMPLQ_QID_M) >> IDPF_TXD_COMPLQ_QID_S;
+ if (rel_tx_qid >= complq->txq_grp->num_txq ||
+ !complq->txq_grp->txqs[rel_tx_qid]) {
+ dev_err(&complq->vport->adapter->pdev->dev,
+ "TxQ not found\n");
+ goto fetch_next_desc;
+ }
+ tx_q = complq->txq_grp->txqs[rel_tx_qid];
+
+ /* Determine completion type */
+ ctype = (le16_to_cpu(tx_desc->qid_comptype_gen) &
+ IDPF_TXD_COMPLQ_COMPL_TYPE_M) >>
+ IDPF_TXD_COMPLQ_COMPL_TYPE_S;
+ switch (ctype) {
+ case IDPF_TXD_COMPLT_RE:
+ hw_head = le16_to_cpu(tx_desc->q_head_compl_tag.q_head);
+
+ idpf_tx_splitq_clean(tx_q, hw_head, budget,
+ &cleaned_stats, true);
+ break;
+ case IDPF_TXD_COMPLT_RS:
+ idpf_tx_handle_rs_completion(tx_q, tx_desc,
+ &cleaned_stats, budget);
+ break;
+ case IDPF_TXD_COMPLT_SW_MARKER:
+ idpf_tx_handle_sw_marker(tx_q);
+ break;
+ default:
+ dev_err(&tx_q->vport->adapter->pdev->dev,
+ "Unknown TX completion type: %d\n",
+ ctype);
+ goto fetch_next_desc;
+ }
+
+ u64_stats_update_begin(&tx_q->stats_sync);
+ u64_stats_add(&tx_q->q_stats.tx.packets, cleaned_stats.packets);
+ u64_stats_add(&tx_q->q_stats.tx.bytes, cleaned_stats.bytes);
+ tx_q->cleaned_pkts += cleaned_stats.packets;
+ tx_q->cleaned_bytes += cleaned_stats.bytes;
+ complq->num_completions++;
+ u64_stats_update_end(&tx_q->stats_sync);
+
+fetch_next_desc:
+ tx_desc++;
+ ntc++;
+ if (unlikely(!ntc)) {
+ ntc -= complq->desc_count;
+ tx_desc = IDPF_SPLITQ_TX_COMPLQ_DESC(complq, 0);
+ change_bit(__IDPF_Q_GEN_CHK, complq->flags);
+ }
+
+ prefetch(tx_desc);
+
+ /* update budget accounting */
+ complq_budget--;
+ } while (likely(complq_budget));
+
+ /* Store the state of the complq to be used later in deciding if a
+ * TXQ can be started again
+ */
+ if (unlikely(IDPF_TX_COMPLQ_PENDING(complq->txq_grp) >
+ IDPF_TX_COMPLQ_OVERFLOW_THRESH(complq)))
+ complq_ok = false;
+
+ np = netdev_priv(complq->vport->netdev);
+ for (i = 0; i < complq->txq_grp->num_txq; ++i) {
+ struct idpf_queue *tx_q = complq->txq_grp->txqs[i];
+ struct netdev_queue *nq;
+ bool dont_wake;
+
+ /* We didn't clean anything on this queue, move along */
+ if (!tx_q->cleaned_bytes)
+ continue;
+
+ *cleaned += tx_q->cleaned_pkts;
+
+ /* Update BQL */
+ nq = netdev_get_tx_queue(tx_q->vport->netdev, tx_q->idx);
+
+ dont_wake = !complq_ok || IDPF_TX_BUF_RSV_LOW(tx_q) ||
+ np->state != __IDPF_VPORT_UP ||
+ !netif_carrier_ok(tx_q->vport->netdev);
+ /* Check if the TXQ needs to and can be restarted */
+ __netif_txq_completed_wake(nq, tx_q->cleaned_pkts, tx_q->cleaned_bytes,
+ IDPF_DESC_UNUSED(tx_q), IDPF_TX_WAKE_THRESH,
+ dont_wake);
+
+ /* Reset cleaned stats for the next time this queue is
+ * cleaned
+ */
+ tx_q->cleaned_bytes = 0;
+ tx_q->cleaned_pkts = 0;
+ }
+
+ ntc += complq->desc_count;
+ complq->next_to_clean = ntc;
+
+ return !!complq_budget;
+}
+
+/**
+ * idpf_tx_splitq_build_ctb - populate command tag and size for queue
+ * based scheduling descriptors
+ * @desc: descriptor to populate
+ * @params: pointer to tx params struct
+ * @td_cmd: command to be filled in desc
+ * @size: size of buffer
+ */
+void idpf_tx_splitq_build_ctb(union idpf_tx_flex_desc *desc,
+ struct idpf_tx_splitq_params *params,
+ u16 td_cmd, u16 size)
+{
+ desc->q.qw1.cmd_dtype =
+ cpu_to_le16(params->dtype & IDPF_FLEX_TXD_QW1_DTYPE_M);
+ desc->q.qw1.cmd_dtype |=
+ cpu_to_le16((td_cmd << IDPF_FLEX_TXD_QW1_CMD_S) &
+ IDPF_FLEX_TXD_QW1_CMD_M);
+ desc->q.qw1.buf_size = cpu_to_le16((u16)size);
+ desc->q.qw1.l2tags.l2tag1 = cpu_to_le16(params->td_tag);
+}
+
+/**
+ * idpf_tx_splitq_build_flow_desc - populate command tag and size for flow
+ * scheduling descriptors
+ * @desc: descriptor to populate
+ * @params: pointer to tx params struct
+ * @td_cmd: command to be filled in desc
+ * @size: size of buffer
+ */
+void idpf_tx_splitq_build_flow_desc(union idpf_tx_flex_desc *desc,
+ struct idpf_tx_splitq_params *params,
+ u16 td_cmd, u16 size)
+{
+ desc->flow.qw1.cmd_dtype = (u16)params->dtype | td_cmd;
+ desc->flow.qw1.rxr_bufsize = cpu_to_le16((u16)size);
+ desc->flow.qw1.compl_tag = cpu_to_le16(params->compl_tag);
+}
+
+/**
+ * idpf_tx_maybe_stop_common - 1st level check for common Tx stop conditions
+ * @tx_q: the queue to be checked
+ * @size: number of descriptors we want to assure is available
+ *
+ * Returns 0 if stop is not needed
+ */
+int idpf_tx_maybe_stop_common(struct idpf_queue *tx_q, unsigned int size)
+{
+ struct netdev_queue *nq;
+
+ if (likely(IDPF_DESC_UNUSED(tx_q) >= size))
+ return 0;
+
+ u64_stats_update_begin(&tx_q->stats_sync);
+ u64_stats_inc(&tx_q->q_stats.tx.q_busy);
+ u64_stats_update_end(&tx_q->stats_sync);
+
+ nq = netdev_get_tx_queue(tx_q->vport->netdev, tx_q->idx);
+
+ return netif_txq_maybe_stop(nq, IDPF_DESC_UNUSED(tx_q), size, size);
+}
+
+/**
+ * idpf_tx_maybe_stop_splitq - 1st level check for Tx splitq stop conditions
+ * @tx_q: the queue to be checked
+ * @descs_needed: number of descriptors required for this packet
+ *
+ * Returns 0 if stop is not needed
+ */
+static int idpf_tx_maybe_stop_splitq(struct idpf_queue *tx_q,
+ unsigned int descs_needed)
+{
+ if (idpf_tx_maybe_stop_common(tx_q, descs_needed))
+ goto splitq_stop;
+
+ /* If there are too many outstanding completions expected on the
+ * completion queue, stop the TX queue to give the device some time to
+ * catch up
+ */
+ if (unlikely(IDPF_TX_COMPLQ_PENDING(tx_q->txq_grp) >
+ IDPF_TX_COMPLQ_OVERFLOW_THRESH(tx_q->txq_grp->complq)))
+ goto splitq_stop;
+
+ /* Also check for available book keeping buffers; if we are low, stop
+ * the queue to wait for more completions
+ */
+ if (unlikely(IDPF_TX_BUF_RSV_LOW(tx_q)))
+ goto splitq_stop;
+
+ return 0;
+
+splitq_stop:
+ u64_stats_update_begin(&tx_q->stats_sync);
+ u64_stats_inc(&tx_q->q_stats.tx.q_busy);
+ u64_stats_update_end(&tx_q->stats_sync);
+ netif_stop_subqueue(tx_q->vport->netdev, tx_q->idx);
+
+ return -EBUSY;
+}
+
+/**
+ * idpf_tx_buf_hw_update - Store the new tail value
+ * @tx_q: queue to bump
+ * @val: new tail index
+ * @xmit_more: more skb's pending
+ *
+ * The naming here is special in that 'hw' signals that this function is about
+ * to do a register write to update our queue status. We know this can only
+ * mean tail here as HW should be owning head for TX.
+ */
+void idpf_tx_buf_hw_update(struct idpf_queue *tx_q, u32 val,
+ bool xmit_more)
+{
+ struct netdev_queue *nq;
+
+ nq = netdev_get_tx_queue(tx_q->vport->netdev, tx_q->idx);
+ tx_q->next_to_use = val;
+
+ idpf_tx_maybe_stop_common(tx_q, IDPF_TX_DESC_NEEDED);
+
+ /* Force memory writes to complete before letting h/w
+ * know there are new descriptors to fetch. (Only
+ * applicable for weak-ordered memory model archs,
+ * such as IA-64).
+ */
+ wmb();
+
+ /* notify HW of packet */
+ if (netif_xmit_stopped(nq) || !xmit_more)
+ writel(val, tx_q->tail);
+}
+
+/**
+ * idpf_tx_desc_count_required - calculate number of Tx descriptors needed
+ * @txq: queue to send buffer on
+ * @skb: send buffer
+ *
+ * Returns number of data descriptors needed for this skb.
+ */
+unsigned int idpf_tx_desc_count_required(struct idpf_queue *txq,
+ struct sk_buff *skb)
+{
+ const struct skb_shared_info *shinfo;
+ unsigned int count = 0, i;
+
+ count += !!skb_headlen(skb);
+
+ if (!skb_is_nonlinear(skb))
+ return count;
+
+ shinfo = skb_shinfo(skb);
+ for (i = 0; i < shinfo->nr_frags; i++) {
+ unsigned int size;
+
+ size = skb_frag_size(&shinfo->frags[i]);
+
+ /* We only need to use the idpf_size_to_txd_count check if the
+ * fragment is going to span multiple descriptors,
+ * i.e. size >= 16K.
+ */
+ if (size >= SZ_16K)
+ count += idpf_size_to_txd_count(size);
+ else
+ count++;
+ }
+
+ if (idpf_chk_linearize(skb, txq->tx_max_bufs, count)) {
+ if (__skb_linearize(skb))
+ return 0;
+
+ count = idpf_size_to_txd_count(skb->len);
+ u64_stats_update_begin(&txq->stats_sync);
+ u64_stats_inc(&txq->q_stats.tx.linearize);
+ u64_stats_update_end(&txq->stats_sync);
+ }
+
+ return count;
+}
+
+/**
+ * idpf_tx_dma_map_error - handle TX DMA map errors
+ * @txq: queue to send buffer on
+ * @skb: send buffer
+ * @first: original first buffer info buffer for packet
+ * @idx: starting point on ring to unwind
+ */
+void idpf_tx_dma_map_error(struct idpf_queue *txq, struct sk_buff *skb,
+ struct idpf_tx_buf *first, u16 idx)
+{
+ u64_stats_update_begin(&txq->stats_sync);
+ u64_stats_inc(&txq->q_stats.tx.dma_map_errs);
+ u64_stats_update_end(&txq->stats_sync);
+
+ /* clear dma mappings for failed tx_buf map */
+ for (;;) {
+ struct idpf_tx_buf *tx_buf;
+
+ tx_buf = &txq->tx_buf[idx];
+ idpf_tx_buf_rel(txq, tx_buf);
+ if (tx_buf == first)
+ break;
+ if (idx == 0)
+ idx = txq->desc_count;
+ idx--;
+ }
+
+ if (skb_is_gso(skb)) {
+ union idpf_tx_flex_desc *tx_desc;
+
+ /* If we failed a DMA mapping for a TSO packet, we will have
+ * used one additional descriptor for a context
+ * descriptor. Reset that here.
+ */
+ tx_desc = IDPF_FLEX_TX_DESC(txq, idx);
+ memset(tx_desc, 0, sizeof(struct idpf_flex_tx_ctx_desc));
+ if (idx == 0)
+ idx = txq->desc_count;
+ idx--;
+ }
+
+ /* Update tail in case netdev_xmit_more was previously true */
+ idpf_tx_buf_hw_update(txq, idx, false);
+}
+
+/**
+ * idpf_tx_splitq_bump_ntu - adjust NTU and generation
+ * @txq: the tx ring to wrap
+ * @ntu: ring index to bump
+ */
+static unsigned int idpf_tx_splitq_bump_ntu(struct idpf_queue *txq, u16 ntu)
+{
+ ntu++;
+
+ if (ntu == txq->desc_count) {
+ ntu = 0;
+ txq->compl_tag_cur_gen = IDPF_TX_ADJ_COMPL_TAG_GEN(txq);
+ }
+
+ return ntu;
+}
+
+/**
+ * idpf_tx_splitq_map - Build the Tx flex descriptor
+ * @tx_q: queue to send buffer on
+ * @params: pointer to splitq params struct
+ * @first: first buffer info buffer to use
+ *
+ * This function loops over the skb data pointed to by *first
+ * and gets a physical address for each memory location and programs
+ * it and the length into the transmit flex descriptor.
+ */
+static void idpf_tx_splitq_map(struct idpf_queue *tx_q,
+ struct idpf_tx_splitq_params *params,
+ struct idpf_tx_buf *first)
+{
+ union idpf_tx_flex_desc *tx_desc;
+ unsigned int data_len, size;
+ struct idpf_tx_buf *tx_buf;
+ u16 i = tx_q->next_to_use;
+ struct netdev_queue *nq;
+ struct sk_buff *skb;
+ skb_frag_t *frag;
+ u16 td_cmd = 0;
+ dma_addr_t dma;
+
+ skb = first->skb;
+
+ td_cmd = params->offload.td_cmd;
+
+ data_len = skb->data_len;
+ size = skb_headlen(skb);
+
+ tx_desc = IDPF_FLEX_TX_DESC(tx_q, i);
+
+ dma = dma_map_single(tx_q->dev, skb->data, size, DMA_TO_DEVICE);
+
+ tx_buf = first;
+
+ params->compl_tag =
+ (tx_q->compl_tag_cur_gen << tx_q->compl_tag_gen_s) | i;
+
+ for (frag = &skb_shinfo(skb)->frags[0];; frag++) {
+ unsigned int max_data = IDPF_TX_MAX_DESC_DATA_ALIGNED;
+
+ if (dma_mapping_error(tx_q->dev, dma))
+ return idpf_tx_dma_map_error(tx_q, skb, first, i);
+
+ tx_buf->compl_tag = params->compl_tag;
+
+ /* record length, and DMA address */
+ dma_unmap_len_set(tx_buf, len, size);
+ dma_unmap_addr_set(tx_buf, dma, dma);
+
+ /* buf_addr is in same location for both desc types */
+ tx_desc->q.buf_addr = cpu_to_le64(dma);
+
+ /* The stack can send us fragments that are too large for a
+ * single descriptor i.e. frag size > 16K-1. We will need to
+ * split the fragment across multiple descriptors in this case.
+ * To adhere to HW alignment restrictions, the fragment needs
+ * to be split such that the first chunk ends on a 4K boundary
+ * and all subsequent chunks start on a 4K boundary. We still
+ * want to send as much data as possible though, so our
+ * intermediate descriptor chunk size will be 12K.
+ *
+ * For example, consider a 32K fragment mapped to DMA addr 2600.
+ * ------------------------------------------------------------
+ * | frag_size = 32K |
+ * ------------------------------------------------------------
+ * |2600 |16384 |28672
+ *
+ * 3 descriptors will be used for this fragment. The HW expects
+ * the descriptors to contain the following:
+ * ------------------------------------------------------------
+ * | size = 13784 | size = 12K | size = 6696 |
+ * | dma = 2600 | dma = 16384 | dma = 28672 |
+ * ------------------------------------------------------------
+ *
+ * We need to first adjust the max_data for the first chunk so
+ * that it ends on a 4K boundary. By negating the value of the
+ * DMA address and taking only the low order bits, we're
+ * effectively calculating
+ * 4K - (DMA addr lower order bits) =
+ * bytes to next boundary.
+ *
+ * Add that to our base aligned max_data (12K) and we have
+ * our first chunk size. In the example above,
+ * 13784 = 12K + (4096-2600)
+ *
+ * After guaranteeing the first chunk ends on a 4K boundary, we
+ * will give the intermediate descriptors 12K chunks and
+ * whatever is left to the final descriptor. This ensures that
+ * all descriptors used for the remaining chunks of the
+ * fragment start on a 4K boundary and we use as few
+ * descriptors as possible.
+ */
+ max_data += -dma & (IDPF_TX_MAX_READ_REQ_SIZE - 1);
+ while (unlikely(size > IDPF_TX_MAX_DESC_DATA)) {
+ idpf_tx_splitq_build_desc(tx_desc, params, td_cmd,
+ max_data);
+
+ tx_desc++;
+ i++;
+
+ if (i == tx_q->desc_count) {
+ tx_desc = IDPF_FLEX_TX_DESC(tx_q, 0);
+ i = 0;
+ tx_q->compl_tag_cur_gen =
+ IDPF_TX_ADJ_COMPL_TAG_GEN(tx_q);
+ }
+
+ /* Since this packet has a buffer that is going to span
+ * multiple descriptors, it's going to leave holes in
+ * to the TX buffer ring. To ensure these holes do not
+ * cause issues in the cleaning routines, we will clear
+ * them of any stale data and assign them the same
+ * completion tag as the current packet. Then when the
+ * packet is being cleaned, the cleaning routines will
+ * simply pass over these holes and finish cleaning the
+ * rest of the packet.
+ */
+ memset(&tx_q->tx_buf[i], 0, sizeof(struct idpf_tx_buf));
+ tx_q->tx_buf[i].compl_tag = params->compl_tag;
+
+ /* Adjust the DMA offset and the remaining size of the
+ * fragment. On the first iteration of this loop,
+ * max_data will be >= 12K and <= 16K-1. On any
+ * subsequent iteration of this loop, max_data will
+ * always be 12K.
+ */
+ dma += max_data;
+ size -= max_data;
+
+ /* Reset max_data since remaining chunks will be 12K
+ * at most
+ */
+ max_data = IDPF_TX_MAX_DESC_DATA_ALIGNED;
+
+ /* buf_addr is in same location for both desc types */
+ tx_desc->q.buf_addr = cpu_to_le64(dma);
+ }
+
+ if (!data_len)
+ break;
+
+ idpf_tx_splitq_build_desc(tx_desc, params, td_cmd, size);
+ tx_desc++;
+ i++;
+
+ if (i == tx_q->desc_count) {
+ tx_desc = IDPF_FLEX_TX_DESC(tx_q, 0);
+ i = 0;
+ tx_q->compl_tag_cur_gen = IDPF_TX_ADJ_COMPL_TAG_GEN(tx_q);
+ }
+
+ size = skb_frag_size(frag);
+ data_len -= size;
+
+ dma = skb_frag_dma_map(tx_q->dev, frag, 0, size,
+ DMA_TO_DEVICE);
+
+ tx_buf = &tx_q->tx_buf[i];
+ }
+
+ /* record SW timestamp if HW timestamp is not available */
+ skb_tx_timestamp(skb);
+
+ /* write last descriptor with RS and EOP bits */
+ td_cmd |= params->eop_cmd;
+ idpf_tx_splitq_build_desc(tx_desc, params, td_cmd, size);
+ i = idpf_tx_splitq_bump_ntu(tx_q, i);
+
+ /* set next_to_watch value indicating a packet is present */
+ first->next_to_watch = tx_desc;
+
+ tx_q->txq_grp->num_completions_pending++;
+
+ /* record bytecount for BQL */
+ nq = netdev_get_tx_queue(tx_q->vport->netdev, tx_q->idx);
+ netdev_tx_sent_queue(nq, first->bytecount);
+
+ idpf_tx_buf_hw_update(tx_q, i, netdev_xmit_more());
+}
+
+/**
+ * idpf_tso - computes mss and TSO length to prepare for TSO
+ * @skb: pointer to skb
+ * @off: pointer to struct that holds offload parameters
+ *
+ * Returns error (negative) if TSO was requested but cannot be applied to the
+ * given skb, 0 if TSO does not apply to the given skb, or 1 otherwise.
+ */
+int idpf_tso(struct sk_buff *skb, struct idpf_tx_offload_params *off)
+{
+ const struct skb_shared_info *shinfo;
+ union {
+ struct iphdr *v4;
+ struct ipv6hdr *v6;
+ unsigned char *hdr;
+ } ip;
+ union {
+ struct tcphdr *tcp;
+ struct udphdr *udp;
+ unsigned char *hdr;
+ } l4;
+ u32 paylen, l4_start;
+ int err;
+
+ if (!skb_is_gso(skb))
+ return 0;
+
+ err = skb_cow_head(skb, 0);
+ if (err < 0)
+ return err;
+
+ shinfo = skb_shinfo(skb);
+
+ ip.hdr = skb_network_header(skb);
+ l4.hdr = skb_transport_header(skb);
+
+ /* initialize outer IP header fields */
+ if (ip.v4->version == 4) {
+ ip.v4->tot_len = 0;
+ ip.v4->check = 0;
+ } else if (ip.v6->version == 6) {
+ ip.v6->payload_len = 0;
+ }
+
+ l4_start = skb_transport_offset(skb);
+
+ /* remove payload length from checksum */
+ paylen = skb->len - l4_start;
+
+ switch (shinfo->gso_type & ~SKB_GSO_DODGY) {
+ case SKB_GSO_TCPV4:
+ case SKB_GSO_TCPV6:
+ csum_replace_by_diff(&l4.tcp->check,
+ (__force __wsum)htonl(paylen));
+ off->tso_hdr_len = __tcp_hdrlen(l4.tcp) + l4_start;
+ break;
+ case SKB_GSO_UDP_L4:
+ csum_replace_by_diff(&l4.udp->check,
+ (__force __wsum)htonl(paylen));
+ /* compute length of segmentation header */
+ off->tso_hdr_len = sizeof(struct udphdr) + l4_start;
+ l4.udp->len = htons(shinfo->gso_size + sizeof(struct udphdr));
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ off->tso_len = skb->len - off->tso_hdr_len;
+ off->mss = shinfo->gso_size;
+ off->tso_segs = shinfo->gso_segs;
+
+ off->tx_flags |= IDPF_TX_FLAGS_TSO;
+
+ return 1;
+}
+
+/**
+ * __idpf_chk_linearize - Check skb is not using too many buffers
+ * @skb: send buffer
+ * @max_bufs: maximum number of buffers
+ *
+ * For TSO we need to count the TSO header and segment payload separately. As
+ * such we need to check cases where we have max_bufs-1 fragments or more as we
+ * can potentially require max_bufs+1 DMA transactions, 1 for the TSO header, 1
+ * for the segment payload in the first descriptor, and another max_buf-1 for
+ * the fragments.
+ */
+static bool __idpf_chk_linearize(struct sk_buff *skb, unsigned int max_bufs)
+{
+ const struct skb_shared_info *shinfo = skb_shinfo(skb);
+ const skb_frag_t *frag, *stale;
+ int nr_frags, sum;
+
+ /* no need to check if number of frags is less than max_bufs - 1 */
+ nr_frags = shinfo->nr_frags;
+ if (nr_frags < (max_bufs - 1))
+ return false;
+
+ /* We need to walk through the list and validate that each group
+ * of max_bufs-2 fragments totals at least gso_size.
+ */
+ nr_frags -= max_bufs - 2;
+ frag = &shinfo->frags[0];
+
+ /* Initialize size to the negative value of gso_size minus 1. We use
+ * this as the worst case scenario in which the frag ahead of us only
+ * provides one byte which is why we are limited to max_bufs-2
+ * descriptors for a single transmit as the header and previous
+ * fragment are already consuming 2 descriptors.
+ */
+ sum = 1 - shinfo->gso_size;
+
+ /* Add size of frags 0 through 4 to create our initial sum */
+ sum += skb_frag_size(frag++);
+ sum += skb_frag_size(frag++);
+ sum += skb_frag_size(frag++);
+ sum += skb_frag_size(frag++);
+ sum += skb_frag_size(frag++);
+
+ /* Walk through fragments adding latest fragment, testing it, and
+ * then removing stale fragments from the sum.
+ */
+ for (stale = &shinfo->frags[0];; stale++) {
+ int stale_size = skb_frag_size(stale);
+
+ sum += skb_frag_size(frag++);
+
+ /* The stale fragment may present us with a smaller
+ * descriptor than the actual fragment size. To account
+ * for that we need to remove all the data on the front and
+ * figure out what the remainder would be in the last
+ * descriptor associated with the fragment.
+ */
+ if (stale_size > IDPF_TX_MAX_DESC_DATA) {
+ int align_pad = -(skb_frag_off(stale)) &
+ (IDPF_TX_MAX_READ_REQ_SIZE - 1);
+
+ sum -= align_pad;
+ stale_size -= align_pad;
+
+ do {
+ sum -= IDPF_TX_MAX_DESC_DATA_ALIGNED;
+ stale_size -= IDPF_TX_MAX_DESC_DATA_ALIGNED;
+ } while (stale_size > IDPF_TX_MAX_DESC_DATA);
+ }
+
+ /* if sum is negative we failed to make sufficient progress */
+ if (sum < 0)
+ return true;
+
+ if (!nr_frags--)
+ break;
+
+ sum -= stale_size;
+ }
+
+ return false;
+}
+
+/**
+ * idpf_chk_linearize - Check if skb exceeds max descriptors per packet
+ * @skb: send buffer
+ * @max_bufs: maximum scatter gather buffers for single packet
+ * @count: number of buffers this packet needs
+ *
+ * Make sure we don't exceed maximum scatter gather buffers for a single
+ * packet. We have to do some special checking around the boundary (max_bufs-1)
+ * if TSO is on since we need count the TSO header and payload separately.
+ * E.g.: a packet with 7 fragments can require 9 DMA transactions; 1 for TSO
+ * header, 1 for segment payload, and then 7 for the fragments.
+ */
+bool idpf_chk_linearize(struct sk_buff *skb, unsigned int max_bufs,
+ unsigned int count)
+{
+ if (likely(count < max_bufs))
+ return false;
+ if (skb_is_gso(skb))
+ return __idpf_chk_linearize(skb, max_bufs);
+
+ return count > max_bufs;
+}
+
+/**
+ * idpf_tx_splitq_get_ctx_desc - grab next desc and update buffer ring
+ * @txq: queue to put context descriptor on
+ *
+ * Since the TX buffer rings mimics the descriptor ring, update the tx buffer
+ * ring entry to reflect that this index is a context descriptor
+ */
+static struct idpf_flex_tx_ctx_desc *
+idpf_tx_splitq_get_ctx_desc(struct idpf_queue *txq)
+{
+ struct idpf_flex_tx_ctx_desc *desc;
+ int i = txq->next_to_use;
+
+ memset(&txq->tx_buf[i], 0, sizeof(struct idpf_tx_buf));
+ txq->tx_buf[i].compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG;
+
+ /* grab the next descriptor */
+ desc = IDPF_FLEX_TX_CTX_DESC(txq, i);
+ txq->next_to_use = idpf_tx_splitq_bump_ntu(txq, i);
+
+ return desc;
+}
+
+/**
+ * idpf_tx_drop_skb - free the SKB and bump tail if necessary
+ * @tx_q: queue to send buffer on
+ * @skb: pointer to skb
+ */
+netdev_tx_t idpf_tx_drop_skb(struct idpf_queue *tx_q, struct sk_buff *skb)
+{
+ u64_stats_update_begin(&tx_q->stats_sync);
+ u64_stats_inc(&tx_q->q_stats.tx.skb_drops);
+ u64_stats_update_end(&tx_q->stats_sync);
+
+ idpf_tx_buf_hw_update(tx_q, tx_q->next_to_use, false);
+
+ dev_kfree_skb(skb);
+
+ return NETDEV_TX_OK;
+}
+
+/**
+ * idpf_tx_splitq_frame - Sends buffer on Tx ring using flex descriptors
+ * @skb: send buffer
+ * @tx_q: queue to send buffer on
+ *
+ * Returns NETDEV_TX_OK if sent, else an error code
+ */
+static netdev_tx_t idpf_tx_splitq_frame(struct sk_buff *skb,
+ struct idpf_queue *tx_q)
+{
+ struct idpf_tx_splitq_params tx_params = { };
+ struct idpf_tx_buf *first;
+ unsigned int count;
+ int tso;
+
+ count = idpf_tx_desc_count_required(tx_q, skb);
+ if (unlikely(!count))
+ return idpf_tx_drop_skb(tx_q, skb);
+
+ tso = idpf_tso(skb, &tx_params.offload);
+ if (unlikely(tso < 0))
+ return idpf_tx_drop_skb(tx_q, skb);
+
+ /* Check for splitq specific TX resources */
+ count += (IDPF_TX_DESCS_PER_CACHE_LINE + tso);
+ if (idpf_tx_maybe_stop_splitq(tx_q, count)) {
+ idpf_tx_buf_hw_update(tx_q, tx_q->next_to_use, false);
+
+ return NETDEV_TX_BUSY;
+ }
+
+ if (tso) {
+ /* If tso is needed, set up context desc */
+ struct idpf_flex_tx_ctx_desc *ctx_desc =
+ idpf_tx_splitq_get_ctx_desc(tx_q);
+
+ ctx_desc->tso.qw1.cmd_dtype =
+ cpu_to_le16(IDPF_TX_DESC_DTYPE_FLEX_TSO_CTX |
+ IDPF_TX_FLEX_CTX_DESC_CMD_TSO);
+ ctx_desc->tso.qw0.flex_tlen =
+ cpu_to_le32(tx_params.offload.tso_len &
+ IDPF_TXD_FLEX_CTX_TLEN_M);
+ ctx_desc->tso.qw0.mss_rt =
+ cpu_to_le16(tx_params.offload.mss &
+ IDPF_TXD_FLEX_CTX_MSS_RT_M);
+ ctx_desc->tso.qw0.hdr_len = tx_params.offload.tso_hdr_len;
+
+ u64_stats_update_begin(&tx_q->stats_sync);
+ u64_stats_inc(&tx_q->q_stats.tx.lso_pkts);
+ u64_stats_update_end(&tx_q->stats_sync);
+ }
+
+ /* record the location of the first descriptor for this packet */
+ first = &tx_q->tx_buf[tx_q->next_to_use];
+ first->skb = skb;
+
+ if (tso) {
+ first->gso_segs = tx_params.offload.tso_segs;
+ first->bytecount = skb->len +
+ ((first->gso_segs - 1) * tx_params.offload.tso_hdr_len);
+ } else {
+ first->gso_segs = 1;
+ first->bytecount = max_t(unsigned int, skb->len, ETH_ZLEN);
+ }
+
+ if (test_bit(__IDPF_Q_FLOW_SCH_EN, tx_q->flags)) {
+ tx_params.dtype = IDPF_TX_DESC_DTYPE_FLEX_FLOW_SCHE;
+ tx_params.eop_cmd = IDPF_TXD_FLEX_FLOW_CMD_EOP;
+ /* Set the RE bit to catch any packets that may have not been
+ * stashed during RS completion cleaning. MIN_GAP is set to
+ * MIN_RING size to ensure it will be set at least once each
+ * time around the ring.
+ */
+ if (!(tx_q->next_to_use % IDPF_TX_SPLITQ_RE_MIN_GAP)) {
+ tx_params.eop_cmd |= IDPF_TXD_FLEX_FLOW_CMD_RE;
+ tx_q->txq_grp->num_completions_pending++;
+ }
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ tx_params.offload.td_cmd |= IDPF_TXD_FLEX_FLOW_CMD_CS_EN;
+
+ } else {
+ tx_params.dtype = IDPF_TX_DESC_DTYPE_FLEX_L2TAG1_L2TAG2;
+ tx_params.eop_cmd = IDPF_TXD_LAST_DESC_CMD;
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ tx_params.offload.td_cmd |= IDPF_TX_FLEX_DESC_CMD_CS_EN;
+ }
+
+ idpf_tx_splitq_map(tx_q, &tx_params, first);
+
+ return NETDEV_TX_OK;
+}
+
+/**
+ * idpf_tx_splitq_start - Selects the right Tx queue to send buffer
+ * @skb: send buffer
+ * @netdev: network interface device structure
+ *
+ * Returns NETDEV_TX_OK if sent, else an error code
+ */
+netdev_tx_t idpf_tx_splitq_start(struct sk_buff *skb,
+ struct net_device *netdev)
+{
+ struct idpf_vport *vport = idpf_netdev_to_vport(netdev);
+ struct idpf_queue *tx_q;
+
+ if (unlikely(skb_get_queue_mapping(skb) >= vport->num_txq)) {
+ dev_kfree_skb_any(skb);
+
+ return NETDEV_TX_OK;
+ }
+
+ tx_q = vport->txqs[skb_get_queue_mapping(skb)];
+
+ /* hardware can't handle really short frames, hardware padding works
+ * beyond this point
+ */
+ if (skb_put_padto(skb, tx_q->tx_min_pkt_len)) {
+ idpf_tx_buf_hw_update(tx_q, tx_q->next_to_use, false);
+
+ return NETDEV_TX_OK;
+ }
+
+ return idpf_tx_splitq_frame(skb, tx_q);
+}
+
+/**
+ * idpf_ptype_to_htype - get a hash type
+ * @decoded: Decoded Rx packet type related fields
+ *
+ * Returns appropriate hash type (such as PKT_HASH_TYPE_L2/L3/L4) to be used by
+ * skb_set_hash based on PTYPE as parsed by HW Rx pipeline and is part of
+ * Rx desc.
+ */
+enum pkt_hash_types idpf_ptype_to_htype(const struct idpf_rx_ptype_decoded *decoded)
+{
+ if (!decoded->known)
+ return PKT_HASH_TYPE_NONE;
+ if (decoded->payload_layer == IDPF_RX_PTYPE_PAYLOAD_LAYER_PAY2 &&
+ decoded->inner_prot)
+ return PKT_HASH_TYPE_L4;
+ if (decoded->payload_layer == IDPF_RX_PTYPE_PAYLOAD_LAYER_PAY2 &&
+ decoded->outer_ip)
+ return PKT_HASH_TYPE_L3;
+ if (decoded->outer_ip == IDPF_RX_PTYPE_OUTER_L2)
+ return PKT_HASH_TYPE_L2;
+
+ return PKT_HASH_TYPE_NONE;
+}
+
+/**
+ * idpf_rx_hash - set the hash value in the skb
+ * @rxq: Rx descriptor ring packet is being transacted on
+ * @skb: pointer to current skb being populated
+ * @rx_desc: Receive descriptor
+ * @decoded: Decoded Rx packet type related fields
+ */
+static void idpf_rx_hash(struct idpf_queue *rxq, struct sk_buff *skb,
+ struct virtchnl2_rx_flex_desc_adv_nic_3 *rx_desc,
+ struct idpf_rx_ptype_decoded *decoded)
+{
+ u32 hash;
+
+ if (unlikely(!idpf_is_feature_ena(rxq->vport, NETIF_F_RXHASH)))
+ return;
+
+ hash = le16_to_cpu(rx_desc->hash1) |
+ (rx_desc->ff2_mirrid_hash2.hash2 << 16) |
+ (rx_desc->hash3 << 24);
+
+ skb_set_hash(skb, hash, idpf_ptype_to_htype(decoded));
+}
+
+/**
+ * idpf_rx_csum - Indicate in skb if checksum is good
+ * @rxq: Rx descriptor ring packet is being transacted on
+ * @skb: pointer to current skb being populated
+ * @csum_bits: checksum fields extracted from the descriptor
+ * @decoded: Decoded Rx packet type related fields
+ *
+ * skb->protocol must be set before this function is called
+ */
+static void idpf_rx_csum(struct idpf_queue *rxq, struct sk_buff *skb,
+ struct idpf_rx_csum_decoded *csum_bits,
+ struct idpf_rx_ptype_decoded *decoded)
+{
+ bool ipv4, ipv6;
+
+ /* check if Rx checksum is enabled */
+ if (unlikely(!idpf_is_feature_ena(rxq->vport, NETIF_F_RXCSUM)))
+ return;
+
+ /* check if HW has decoded the packet and checksum */
+ if (!(csum_bits->l3l4p))
+ return;
+
+ ipv4 = IDPF_RX_PTYPE_TO_IPV(decoded, IDPF_RX_PTYPE_OUTER_IPV4);
+ ipv6 = IDPF_RX_PTYPE_TO_IPV(decoded, IDPF_RX_PTYPE_OUTER_IPV6);
+
+ if (ipv4 && (csum_bits->ipe || csum_bits->eipe))
+ goto checksum_fail;
+
+ if (ipv6 && csum_bits->ipv6exadd)
+ return;
+
+ /* check for L4 errors and handle packets that were not able to be
+ * checksummed
+ */
+ if (csum_bits->l4e)
+ goto checksum_fail;
+
+ /* Only report checksum unnecessary for ICMP, TCP, UDP, or SCTP */
+ switch (decoded->inner_prot) {
+ case IDPF_RX_PTYPE_INNER_PROT_ICMP:
+ case IDPF_RX_PTYPE_INNER_PROT_TCP:
+ case IDPF_RX_PTYPE_INNER_PROT_UDP:
+ if (!csum_bits->raw_csum_inv) {
+ u16 csum = csum_bits->raw_csum;
+
+ skb->csum = csum_unfold((__force __sum16)~swab16(csum));
+ skb->ip_summed = CHECKSUM_COMPLETE;
+ } else {
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ }
+ break;
+ case IDPF_RX_PTYPE_INNER_PROT_SCTP:
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ break;
+ default:
+ break;
+ }
+
+ return;
+
+checksum_fail:
+ u64_stats_update_begin(&rxq->stats_sync);
+ u64_stats_inc(&rxq->q_stats.rx.hw_csum_err);
+ u64_stats_update_end(&rxq->stats_sync);
+}
+
+/**
+ * idpf_rx_splitq_extract_csum_bits - Extract checksum bits from descriptor
+ * @rx_desc: receive descriptor
+ * @csum: structure to extract checksum fields
+ *
+ **/
+static void idpf_rx_splitq_extract_csum_bits(struct virtchnl2_rx_flex_desc_adv_nic_3 *rx_desc,
+ struct idpf_rx_csum_decoded *csum)
+{
+ u8 qword0, qword1;
+
+ qword0 = rx_desc->status_err0_qw0;
+ qword1 = rx_desc->status_err0_qw1;
+
+ csum->ipe = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_XSUM_IPE_M,
+ qword1);
+ csum->eipe = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_XSUM_EIPE_M,
+ qword1);
+ csum->l4e = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_XSUM_L4E_M,
+ qword1);
+ csum->l3l4p = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_L3L4P_M,
+ qword1);
+ csum->ipv6exadd = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_IPV6EXADD_M,
+ qword0);
+ csum->raw_csum_inv = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_RAW_CSUM_INV_M,
+ le16_to_cpu(rx_desc->ptype_err_fflags0));
+ csum->raw_csum = le16_to_cpu(rx_desc->misc.raw_cs);
+}
+
+/**
+ * idpf_rx_rsc - Set the RSC fields in the skb
+ * @rxq : Rx descriptor ring packet is being transacted on
+ * @skb : pointer to current skb being populated
+ * @rx_desc: Receive descriptor
+ * @decoded: Decoded Rx packet type related fields
+ *
+ * Return 0 on success and error code on failure
+ *
+ * Populate the skb fields with the total number of RSC segments, RSC payload
+ * length and packet type.
+ */
+static int idpf_rx_rsc(struct idpf_queue *rxq, struct sk_buff *skb,
+ struct virtchnl2_rx_flex_desc_adv_nic_3 *rx_desc,
+ struct idpf_rx_ptype_decoded *decoded)
+{
+ u16 rsc_segments, rsc_seg_len;
+ bool ipv4, ipv6;
+ int len;
+
+ if (unlikely(!decoded->outer_ip))
+ return -EINVAL;
+
+ rsc_seg_len = le16_to_cpu(rx_desc->misc.rscseglen);
+ if (unlikely(!rsc_seg_len))
+ return -EINVAL;
+
+ ipv4 = IDPF_RX_PTYPE_TO_IPV(decoded, IDPF_RX_PTYPE_OUTER_IPV4);
+ ipv6 = IDPF_RX_PTYPE_TO_IPV(decoded, IDPF_RX_PTYPE_OUTER_IPV6);
+
+ if (unlikely(!(ipv4 ^ ipv6)))
+ return -EINVAL;
+
+ rsc_segments = DIV_ROUND_UP(skb->data_len, rsc_seg_len);
+ if (unlikely(rsc_segments == 1))
+ return 0;
+
+ NAPI_GRO_CB(skb)->count = rsc_segments;
+ skb_shinfo(skb)->gso_size = rsc_seg_len;
+
+ skb_reset_network_header(skb);
+ len = skb->len - skb_transport_offset(skb);
+
+ if (ipv4) {
+ struct iphdr *ipv4h = ip_hdr(skb);
+
+ skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
+
+ /* Reset and set transport header offset in skb */
+ skb_set_transport_header(skb, sizeof(struct iphdr));
+
+ /* Compute the TCP pseudo header checksum*/
+ tcp_hdr(skb)->check =
+ ~tcp_v4_check(len, ipv4h->saddr, ipv4h->daddr, 0);
+ } else {
+ struct ipv6hdr *ipv6h = ipv6_hdr(skb);
+
+ skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
+ skb_set_transport_header(skb, sizeof(struct ipv6hdr));
+ tcp_hdr(skb)->check =
+ ~tcp_v6_check(len, &ipv6h->saddr, &ipv6h->daddr, 0);
+ }
+
+ tcp_gro_complete(skb);
+
+ u64_stats_update_begin(&rxq->stats_sync);
+ u64_stats_inc(&rxq->q_stats.rx.rsc_pkts);
+ u64_stats_update_end(&rxq->stats_sync);
+
+ return 0;
+}
+
+/**
+ * idpf_rx_process_skb_fields - Populate skb header fields from Rx descriptor
+ * @rxq: Rx descriptor ring packet is being transacted on
+ * @skb: pointer to current skb being populated
+ * @rx_desc: Receive descriptor
+ *
+ * This function checks the ring, descriptor, and packet information in
+ * order to populate the hash, checksum, protocol, and
+ * other fields within the skb.
+ */
+static int idpf_rx_process_skb_fields(struct idpf_queue *rxq,
+ struct sk_buff *skb,
+ struct virtchnl2_rx_flex_desc_adv_nic_3 *rx_desc)
+{
+ struct idpf_rx_csum_decoded csum_bits = { };
+ struct idpf_rx_ptype_decoded decoded;
+ u16 rx_ptype;
+
+ rx_ptype = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_PTYPE_M,
+ le16_to_cpu(rx_desc->ptype_err_fflags0));
+
+ decoded = rxq->vport->rx_ptype_lkup[rx_ptype];
+ /* If we don't know the ptype we can't do anything else with it. Just
+ * pass it up the stack as-is.
+ */
+ if (!decoded.known)
+ return 0;
+
+ /* process RSS/hash */
+ idpf_rx_hash(rxq, skb, rx_desc, &decoded);
+
+ skb->protocol = eth_type_trans(skb, rxq->vport->netdev);
+
+ if (FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_RSC_M,
+ le16_to_cpu(rx_desc->hdrlen_flags)))
+ return idpf_rx_rsc(rxq, skb, rx_desc, &decoded);
+
+ idpf_rx_splitq_extract_csum_bits(rx_desc, &csum_bits);
+ idpf_rx_csum(rxq, skb, &csum_bits, &decoded);
+
+ return 0;
+}
+
+/**
+ * idpf_rx_add_frag - Add contents of Rx buffer to sk_buff as a frag
+ * @rx_buf: buffer containing page to add
+ * @skb: sk_buff to place the data into
+ * @size: packet length from rx_desc
+ *
+ * This function will add the data contained in rx_buf->page to the skb.
+ * It will just attach the page as a frag to the skb.
+ * The function will then update the page offset.
+ */
+void idpf_rx_add_frag(struct idpf_rx_buf *rx_buf, struct sk_buff *skb,
+ unsigned int size)
+{
+ skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buf->page,
+ rx_buf->page_offset, size, rx_buf->truesize);
+
+ rx_buf->page = NULL;
+}
+
+/**
+ * idpf_rx_construct_skb - Allocate skb and populate it
+ * @rxq: Rx descriptor queue
+ * @rx_buf: Rx buffer to pull data from
+ * @size: the length of the packet
+ *
+ * This function allocates an skb. It then populates it with the page
+ * data from the current receive descriptor, taking care to set up the
+ * skb correctly.
+ */
+struct sk_buff *idpf_rx_construct_skb(struct idpf_queue *rxq,
+ struct idpf_rx_buf *rx_buf,
+ unsigned int size)
+{
+ unsigned int headlen;
+ struct sk_buff *skb;
+ void *va;
+
+ va = page_address(rx_buf->page) + rx_buf->page_offset;
+
+ /* prefetch first cache line of first page */
+ net_prefetch(va);
+ /* allocate a skb to store the frags */
+ skb = __napi_alloc_skb(&rxq->q_vector->napi, IDPF_RX_HDR_SIZE,
+ GFP_ATOMIC);
+ if (unlikely(!skb)) {
+ idpf_rx_put_page(rx_buf);
+
+ return NULL;
+ }
+
+ skb_record_rx_queue(skb, rxq->idx);
+ skb_mark_for_recycle(skb);
+
+ /* Determine available headroom for copy */
+ headlen = size;
+ if (headlen > IDPF_RX_HDR_SIZE)
+ headlen = eth_get_headlen(skb->dev, va, IDPF_RX_HDR_SIZE);
+
+ /* align pull length to size of long to optimize memcpy performance */
+ memcpy(__skb_put(skb, headlen), va, ALIGN(headlen, sizeof(long)));
+
+ /* if we exhaust the linear part then add what is left as a frag */
+ size -= headlen;
+ if (!size) {
+ idpf_rx_put_page(rx_buf);
+
+ return skb;
+ }
+
+ skb_add_rx_frag(skb, 0, rx_buf->page, rx_buf->page_offset + headlen,
+ size, rx_buf->truesize);
+
+ /* Since we're giving the page to the stack, clear our reference to it.
+ * We'll get a new one during buffer posting.
+ */
+ rx_buf->page = NULL;
+
+ return skb;
+}
+
+/**
+ * idpf_rx_hdr_construct_skb - Allocate skb and populate it from header buffer
+ * @rxq: Rx descriptor queue
+ * @va: Rx buffer to pull data from
+ * @size: the length of the packet
+ *
+ * This function allocates an skb. It then populates it with the page data from
+ * the current receive descriptor, taking care to set up the skb correctly.
+ * This specifically uses a header buffer to start building the skb.
+ */
+static struct sk_buff *idpf_rx_hdr_construct_skb(struct idpf_queue *rxq,
+ const void *va,
+ unsigned int size)
+{
+ struct sk_buff *skb;
+
+ /* allocate a skb to store the frags */
+ skb = __napi_alloc_skb(&rxq->q_vector->napi, size, GFP_ATOMIC);
+ if (unlikely(!skb))
+ return NULL;
+
+ skb_record_rx_queue(skb, rxq->idx);
+
+ memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long)));
+
+ /* More than likely, a payload fragment, which will use a page from
+ * page_pool will be added to the SKB so mark it for recycle
+ * preemptively. And if not, it's inconsequential.
+ */
+ skb_mark_for_recycle(skb);
+
+ return skb;
+}
+
+/**
+ * idpf_rx_splitq_test_staterr - tests bits in Rx descriptor
+ * status and error fields
+ * @stat_err_field: field from descriptor to test bits in
+ * @stat_err_bits: value to mask
+ *
+ */
+static bool idpf_rx_splitq_test_staterr(const u8 stat_err_field,
+ const u8 stat_err_bits)
+{
+ return !!(stat_err_field & stat_err_bits);
+}
+
+/**
+ * idpf_rx_splitq_is_eop - process handling of EOP buffers
+ * @rx_desc: Rx descriptor for current buffer
+ *
+ * If the buffer is an EOP buffer, this function exits returning true,
+ * otherwise return false indicating that this is in fact a non-EOP buffer.
+ */
+static bool idpf_rx_splitq_is_eop(struct virtchnl2_rx_flex_desc_adv_nic_3 *rx_desc)
+{
+ /* if we are the last buffer then there is nothing else to do */
+ return likely(idpf_rx_splitq_test_staterr(rx_desc->status_err0_qw1,
+ IDPF_RXD_EOF_SPLITQ));
+}
+
+/**
+ * idpf_rx_splitq_clean - Clean completed descriptors from Rx queue
+ * @rxq: Rx descriptor queue to retrieve receive buffer queue
+ * @budget: Total limit on number of packets to process
+ *
+ * This function provides a "bounce buffer" approach to Rx interrupt
+ * processing. The advantage to this is that on systems that have
+ * expensive overhead for IOMMU access this provides a means of avoiding
+ * it by maintaining the mapping of the page to the system.
+ *
+ * Returns amount of work completed
+ */
+static int idpf_rx_splitq_clean(struct idpf_queue *rxq, int budget)
+{
+ int total_rx_bytes = 0, total_rx_pkts = 0;
+ struct idpf_queue *rx_bufq = NULL;
+ struct sk_buff *skb = rxq->skb;
+ u16 ntc = rxq->next_to_clean;
+
+ /* Process Rx packets bounded by budget */
+ while (likely(total_rx_pkts < budget)) {
+ struct virtchnl2_rx_flex_desc_adv_nic_3 *rx_desc;
+ struct idpf_sw_queue *refillq = NULL;
+ struct idpf_rxq_set *rxq_set = NULL;
+ struct idpf_rx_buf *rx_buf = NULL;
+ union virtchnl2_rx_desc *desc;
+ unsigned int pkt_len = 0;
+ unsigned int hdr_len = 0;
+ u16 gen_id, buf_id = 0;
+ /* Header buffer overflow only valid for header split */
+ bool hbo = false;
+ int bufq_id;
+ u8 rxdid;
+
+ /* get the Rx desc from Rx queue based on 'next_to_clean' */
+ desc = IDPF_RX_DESC(rxq, ntc);
+ rx_desc = (struct virtchnl2_rx_flex_desc_adv_nic_3 *)desc;
+
+ /* This memory barrier is needed to keep us from reading
+ * any other fields out of the rx_desc
+ */
+ dma_rmb();
+
+ /* if the descriptor isn't done, no work yet to do */
+ gen_id = le16_to_cpu(rx_desc->pktlen_gen_bufq_id);
+ gen_id = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_GEN_M, gen_id);
+
+ if (test_bit(__IDPF_Q_GEN_CHK, rxq->flags) != gen_id)
+ break;
+
+ rxdid = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_RXDID_M,
+ rx_desc->rxdid_ucast);
+ if (rxdid != VIRTCHNL2_RXDID_2_FLEX_SPLITQ) {
+ IDPF_RX_BUMP_NTC(rxq, ntc);
+ u64_stats_update_begin(&rxq->stats_sync);
+ u64_stats_inc(&rxq->q_stats.rx.bad_descs);
+ u64_stats_update_end(&rxq->stats_sync);
+ continue;
+ }
+
+ pkt_len = le16_to_cpu(rx_desc->pktlen_gen_bufq_id);
+ pkt_len = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_LEN_PBUF_M,
+ pkt_len);
+
+ hbo = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_HBO_M,
+ rx_desc->status_err0_qw1);
+
+ if (unlikely(hbo)) {
+ /* If a header buffer overflow, occurs, i.e. header is
+ * too large to fit in the header split buffer, HW will
+ * put the entire packet, including headers, in the
+ * data/payload buffer.
+ */
+ u64_stats_update_begin(&rxq->stats_sync);
+ u64_stats_inc(&rxq->q_stats.rx.hsplit_buf_ovf);
+ u64_stats_update_end(&rxq->stats_sync);
+ goto bypass_hsplit;
+ }
+
+ hdr_len = le16_to_cpu(rx_desc->hdrlen_flags);
+ hdr_len = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_LEN_HDR_M,
+ hdr_len);
+
+bypass_hsplit:
+ bufq_id = le16_to_cpu(rx_desc->pktlen_gen_bufq_id);
+ bufq_id = FIELD_GET(VIRTCHNL2_RX_FLEX_DESC_ADV_BUFQ_ID_M,
+ bufq_id);
+
+ rxq_set = container_of(rxq, struct idpf_rxq_set, rxq);
+ if (!bufq_id)
+ refillq = rxq_set->refillq0;
+ else
+ refillq = rxq_set->refillq1;
+
+ /* retrieve buffer from the rxq */
+ rx_bufq = &rxq->rxq_grp->splitq.bufq_sets[bufq_id].bufq;
+
+ buf_id = le16_to_cpu(rx_desc->buf_id);
+
+ rx_buf = &rx_bufq->rx_buf.buf[buf_id];
+
+ if (hdr_len) {
+ const void *va = (u8 *)rx_bufq->rx_buf.hdr_buf_va +
+ (u32)buf_id * IDPF_HDR_BUF_SIZE;
+
+ skb = idpf_rx_hdr_construct_skb(rxq, va, hdr_len);
+ u64_stats_update_begin(&rxq->stats_sync);
+ u64_stats_inc(&rxq->q_stats.rx.hsplit_pkts);
+ u64_stats_update_end(&rxq->stats_sync);
+ }
+
+ if (pkt_len) {
+ idpf_rx_sync_for_cpu(rx_buf, pkt_len);
+ if (skb)
+ idpf_rx_add_frag(rx_buf, skb, pkt_len);
+ else
+ skb = idpf_rx_construct_skb(rxq, rx_buf,
+ pkt_len);
+ } else {
+ idpf_rx_put_page(rx_buf);
+ }
+
+ /* exit if we failed to retrieve a buffer */
+ if (!skb)
+ break;
+
+ idpf_rx_post_buf_refill(refillq, buf_id);
+
+ IDPF_RX_BUMP_NTC(rxq, ntc);
+ /* skip if it is non EOP desc */
+ if (!idpf_rx_splitq_is_eop(rx_desc))
+ continue;
+
+ /* pad skb if needed (to make valid ethernet frame) */
+ if (eth_skb_pad(skb)) {
+ skb = NULL;
+ continue;
+ }
+
+ /* probably a little skewed due to removing CRC */
+ total_rx_bytes += skb->len;
+
+ /* protocol */
+ if (unlikely(idpf_rx_process_skb_fields(rxq, skb, rx_desc))) {
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+ continue;
+ }
+
+ /* send completed skb up the stack */
+ napi_gro_receive(&rxq->q_vector->napi, skb);
+ skb = NULL;
+
+ /* update budget accounting */
+ total_rx_pkts++;
+ }
+
+ rxq->next_to_clean = ntc;
+
+ rxq->skb = skb;
+ u64_stats_update_begin(&rxq->stats_sync);
+ u64_stats_add(&rxq->q_stats.rx.packets, total_rx_pkts);
+ u64_stats_add(&rxq->q_stats.rx.bytes, total_rx_bytes);
+ u64_stats_update_end(&rxq->stats_sync);
+
+ /* guarantee a trip back through this routine if there was a failure */
+ return total_rx_pkts;
+}
+
+/**
+ * idpf_rx_update_bufq_desc - Update buffer queue descriptor
+ * @bufq: Pointer to the buffer queue
+ * @refill_desc: SW Refill queue descriptor containing buffer ID
+ * @buf_desc: Buffer queue descriptor
+ *
+ * Return 0 on success and negative on failure.
+ */
+static int idpf_rx_update_bufq_desc(struct idpf_queue *bufq, u16 refill_desc,
+ struct virtchnl2_splitq_rx_buf_desc *buf_desc)
+{
+ struct idpf_rx_buf *buf;
+ dma_addr_t addr;
+ u16 buf_id;
+
+ buf_id = FIELD_GET(IDPF_RX_BI_BUFID_M, refill_desc);
+
+ buf = &bufq->rx_buf.buf[buf_id];
+
+ addr = idpf_alloc_page(bufq->pp, buf, bufq->rx_buf_size);
+ if (unlikely(addr == DMA_MAPPING_ERROR))
+ return -ENOMEM;
+
+ buf_desc->pkt_addr = cpu_to_le64(addr);
+ buf_desc->qword0.buf_id = cpu_to_le16(buf_id);
+
+ if (!bufq->rx_hsplit_en)
+ return 0;
+
+ buf_desc->hdr_addr = cpu_to_le64(bufq->rx_buf.hdr_buf_pa +
+ (u32)buf_id * IDPF_HDR_BUF_SIZE);
+
+ return 0;
+}
+
+/**
+ * idpf_rx_clean_refillq - Clean refill queue buffers
+ * @bufq: buffer queue to post buffers back to
+ * @refillq: refill queue to clean
+ *
+ * This function takes care of the buffer refill management
+ */
+static void idpf_rx_clean_refillq(struct idpf_queue *bufq,
+ struct idpf_sw_queue *refillq)
+{
+ struct virtchnl2_splitq_rx_buf_desc *buf_desc;
+ u16 bufq_nta = bufq->next_to_alloc;
+ u16 ntc = refillq->next_to_clean;
+ int cleaned = 0;
+ u16 gen;
+
+ buf_desc = IDPF_SPLITQ_RX_BUF_DESC(bufq, bufq_nta);
+
+ /* make sure we stop at ring wrap in the unlikely case ring is full */
+ while (likely(cleaned < refillq->desc_count)) {
+ u16 refill_desc = IDPF_SPLITQ_RX_BI_DESC(refillq, ntc);
+ bool failure;
+
+ gen = FIELD_GET(IDPF_RX_BI_GEN_M, refill_desc);
+ if (test_bit(__IDPF_RFLQ_GEN_CHK, refillq->flags) != gen)
+ break;
+
+ failure = idpf_rx_update_bufq_desc(bufq, refill_desc,
+ buf_desc);
+ if (failure)
+ break;
+
+ if (unlikely(++ntc == refillq->desc_count)) {
+ change_bit(__IDPF_RFLQ_GEN_CHK, refillq->flags);
+ ntc = 0;
+ }
+
+ if (unlikely(++bufq_nta == bufq->desc_count)) {
+ buf_desc = IDPF_SPLITQ_RX_BUF_DESC(bufq, 0);
+ bufq_nta = 0;
+ } else {
+ buf_desc++;
+ }
+
+ cleaned++;
+ }
+
+ if (!cleaned)
+ return;
+
+ /* We want to limit how many transactions on the bus we trigger with
+ * tail writes so we only do it in strides. It's also important we
+ * align the write to a multiple of 8 as required by HW.
+ */
+ if (((bufq->next_to_use <= bufq_nta ? 0 : bufq->desc_count) +
+ bufq_nta - bufq->next_to_use) >= IDPF_RX_BUF_POST_STRIDE)
+ idpf_rx_buf_hw_update(bufq, ALIGN_DOWN(bufq_nta,
+ IDPF_RX_BUF_POST_STRIDE));
+
+ /* update next to alloc since we have filled the ring */
+ refillq->next_to_clean = ntc;
+ bufq->next_to_alloc = bufq_nta;
+}
+
+/**
+ * idpf_rx_clean_refillq_all - Clean all refill queues
+ * @bufq: buffer queue with refill queues
+ *
+ * Iterates through all refill queues assigned to the buffer queue assigned to
+ * this vector. Returns true if clean is complete within budget, false
+ * otherwise.
+ */
+static void idpf_rx_clean_refillq_all(struct idpf_queue *bufq)
+{
+ struct idpf_bufq_set *bufq_set;
+ int i;
+
+ bufq_set = container_of(bufq, struct idpf_bufq_set, bufq);
+ for (i = 0; i < bufq_set->num_refillqs; i++)
+ idpf_rx_clean_refillq(bufq, &bufq_set->refillqs[i]);
+}
+
+/**
+ * idpf_vport_intr_clean_queues - MSIX mode Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a q_vector
+ *
+ */
+static irqreturn_t idpf_vport_intr_clean_queues(int __always_unused irq,
+ void *data)
+{
+ struct idpf_q_vector *q_vector = (struct idpf_q_vector *)data;
+
+ q_vector->total_events++;
+ napi_schedule(&q_vector->napi);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * idpf_vport_intr_napi_del_all - Unregister napi for all q_vectors in vport
+ * @vport: virtual port structure
+ *
+ */
+static void idpf_vport_intr_napi_del_all(struct idpf_vport *vport)
+{
+ u16 v_idx;
+
+ for (v_idx = 0; v_idx < vport->num_q_vectors; v_idx++)
+ netif_napi_del(&vport->q_vectors[v_idx].napi);
+}
+
+/**
+ * idpf_vport_intr_napi_dis_all - Disable NAPI for all q_vectors in the vport
+ * @vport: main vport structure
+ */
+static void idpf_vport_intr_napi_dis_all(struct idpf_vport *vport)
+{
+ int v_idx;
+
+ for (v_idx = 0; v_idx < vport->num_q_vectors; v_idx++)
+ napi_disable(&vport->q_vectors[v_idx].napi);
+}
+
+/**
+ * idpf_vport_intr_rel - Free memory allocated for interrupt vectors
+ * @vport: virtual port
+ *
+ * Free the memory allocated for interrupt vectors associated to a vport
+ */
+void idpf_vport_intr_rel(struct idpf_vport *vport)
+{
+ int i, j, v_idx;
+
+ for (v_idx = 0; v_idx < vport->num_q_vectors; v_idx++) {
+ struct idpf_q_vector *q_vector = &vport->q_vectors[v_idx];
+
+ kfree(q_vector->bufq);
+ q_vector->bufq = NULL;
+ kfree(q_vector->tx);
+ q_vector->tx = NULL;
+ kfree(q_vector->rx);
+ q_vector->rx = NULL;
+ }
+
+ /* Clean up the mapping of queues to vectors */
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ for (j = 0; j < rx_qgrp->splitq.num_rxq_sets; j++)
+ rx_qgrp->splitq.rxq_sets[j]->rxq.q_vector = NULL;
+ else
+ for (j = 0; j < rx_qgrp->singleq.num_rxq; j++)
+ rx_qgrp->singleq.rxqs[j]->q_vector = NULL;
+ }
+
+ if (idpf_is_queue_model_split(vport->txq_model))
+ for (i = 0; i < vport->num_txq_grp; i++)
+ vport->txq_grps[i].complq->q_vector = NULL;
+ else
+ for (i = 0; i < vport->num_txq_grp; i++)
+ for (j = 0; j < vport->txq_grps[i].num_txq; j++)
+ vport->txq_grps[i].txqs[j]->q_vector = NULL;
+
+ kfree(vport->q_vectors);
+ vport->q_vectors = NULL;
+}
+
+/**
+ * idpf_vport_intr_rel_irq - Free the IRQ association with the OS
+ * @vport: main vport structure
+ */
+static void idpf_vport_intr_rel_irq(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ int vector;
+
+ for (vector = 0; vector < vport->num_q_vectors; vector++) {
+ struct idpf_q_vector *q_vector = &vport->q_vectors[vector];
+ int irq_num, vidx;
+
+ /* free only the irqs that were actually requested */
+ if (!q_vector)
+ continue;
+
+ vidx = vport->q_vector_idxs[vector];
+ irq_num = adapter->msix_entries[vidx].vector;
+
+ /* clear the affinity_mask in the IRQ descriptor */
+ irq_set_affinity_hint(irq_num, NULL);
+ free_irq(irq_num, q_vector);
+ }
+}
+
+/**
+ * idpf_vport_intr_dis_irq_all - Disable all interrupt
+ * @vport: main vport structure
+ */
+static void idpf_vport_intr_dis_irq_all(struct idpf_vport *vport)
+{
+ struct idpf_q_vector *q_vector = vport->q_vectors;
+ int q_idx;
+
+ for (q_idx = 0; q_idx < vport->num_q_vectors; q_idx++)
+ writel(0, q_vector[q_idx].intr_reg.dyn_ctl);
+}
+
+/**
+ * idpf_vport_intr_buildreg_itr - Enable default interrupt generation settings
+ * @q_vector: pointer to q_vector
+ * @type: itr index
+ * @itr: itr value
+ */
+static u32 idpf_vport_intr_buildreg_itr(struct idpf_q_vector *q_vector,
+ const int type, u16 itr)
+{
+ u32 itr_val;
+
+ itr &= IDPF_ITR_MASK;
+ /* Don't clear PBA because that can cause lost interrupts that
+ * came in while we were cleaning/polling
+ */
+ itr_val = q_vector->intr_reg.dyn_ctl_intena_m |
+ (type << q_vector->intr_reg.dyn_ctl_itridx_s) |
+ (itr << (q_vector->intr_reg.dyn_ctl_intrvl_s - 1));
+
+ return itr_val;
+}
+
+/**
+ * idpf_update_dim_sample - Update dim sample with packets and bytes
+ * @q_vector: the vector associated with the interrupt
+ * @dim_sample: dim sample to update
+ * @dim: dim instance structure
+ * @packets: total packets
+ * @bytes: total bytes
+ *
+ * Update the dim sample with the packets and bytes which are passed to this
+ * function. Set the dim state appropriately if the dim settings gets stale.
+ */
+static void idpf_update_dim_sample(struct idpf_q_vector *q_vector,
+ struct dim_sample *dim_sample,
+ struct dim *dim, u64 packets, u64 bytes)
+{
+ dim_update_sample(q_vector->total_events, packets, bytes, dim_sample);
+ dim_sample->comp_ctr = 0;
+
+ /* if dim settings get stale, like when not updated for 1 second or
+ * longer, force it to start again. This addresses the frequent case
+ * of an idle queue being switched to by the scheduler.
+ */
+ if (ktime_ms_delta(dim_sample->time, dim->start_sample.time) >= HZ)
+ dim->state = DIM_START_MEASURE;
+}
+
+/**
+ * idpf_net_dim - Update net DIM algorithm
+ * @q_vector: the vector associated with the interrupt
+ *
+ * Create a DIM sample and notify net_dim() so that it can possibly decide
+ * a new ITR value based on incoming packets, bytes, and interrupts.
+ *
+ * This function is a no-op if the queue is not configured to dynamic ITR.
+ */
+static void idpf_net_dim(struct idpf_q_vector *q_vector)
+{
+ struct dim_sample dim_sample = { };
+ u64 packets, bytes;
+ u32 i;
+
+ if (!IDPF_ITR_IS_DYNAMIC(q_vector->tx_intr_mode))
+ goto check_rx_itr;
+
+ for (i = 0, packets = 0, bytes = 0; i < q_vector->num_txq; i++) {
+ struct idpf_queue *txq = q_vector->tx[i];
+ unsigned int start;
+
+ do {
+ start = u64_stats_fetch_begin(&txq->stats_sync);
+ packets += u64_stats_read(&txq->q_stats.tx.packets);
+ bytes += u64_stats_read(&txq->q_stats.tx.bytes);
+ } while (u64_stats_fetch_retry(&txq->stats_sync, start));
+ }
+
+ idpf_update_dim_sample(q_vector, &dim_sample, &q_vector->tx_dim,
+ packets, bytes);
+ net_dim(&q_vector->tx_dim, dim_sample);
+
+check_rx_itr:
+ if (!IDPF_ITR_IS_DYNAMIC(q_vector->rx_intr_mode))
+ return;
+
+ for (i = 0, packets = 0, bytes = 0; i < q_vector->num_rxq; i++) {
+ struct idpf_queue *rxq = q_vector->rx[i];
+ unsigned int start;
+
+ do {
+ start = u64_stats_fetch_begin(&rxq->stats_sync);
+ packets += u64_stats_read(&rxq->q_stats.rx.packets);
+ bytes += u64_stats_read(&rxq->q_stats.rx.bytes);
+ } while (u64_stats_fetch_retry(&rxq->stats_sync, start));
+ }
+
+ idpf_update_dim_sample(q_vector, &dim_sample, &q_vector->rx_dim,
+ packets, bytes);
+ net_dim(&q_vector->rx_dim, dim_sample);
+}
+
+/**
+ * idpf_vport_intr_update_itr_ena_irq - Update itr and re-enable MSIX interrupt
+ * @q_vector: q_vector for which itr is being updated and interrupt enabled
+ *
+ * Update the net_dim() algorithm and re-enable the interrupt associated with
+ * this vector.
+ */
+void idpf_vport_intr_update_itr_ena_irq(struct idpf_q_vector *q_vector)
+{
+ u32 intval;
+
+ /* net_dim() updates ITR out-of-band using a work item */
+ idpf_net_dim(q_vector);
+
+ intval = idpf_vport_intr_buildreg_itr(q_vector,
+ IDPF_NO_ITR_UPDATE_IDX, 0);
+
+ writel(intval, q_vector->intr_reg.dyn_ctl);
+}
+
+/**
+ * idpf_vport_intr_req_irq - get MSI-X vectors from the OS for the vport
+ * @vport: main vport structure
+ * @basename: name for the vector
+ */
+static int idpf_vport_intr_req_irq(struct idpf_vport *vport, char *basename)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ int vector, err, irq_num, vidx;
+ const char *vec_name;
+
+ for (vector = 0; vector < vport->num_q_vectors; vector++) {
+ struct idpf_q_vector *q_vector = &vport->q_vectors[vector];
+
+ vidx = vport->q_vector_idxs[vector];
+ irq_num = adapter->msix_entries[vidx].vector;
+
+ if (q_vector->num_rxq && q_vector->num_txq)
+ vec_name = "TxRx";
+ else if (q_vector->num_rxq)
+ vec_name = "Rx";
+ else if (q_vector->num_txq)
+ vec_name = "Tx";
+ else
+ continue;
+
+ q_vector->name = kasprintf(GFP_KERNEL, "%s-%s-%d",
+ basename, vec_name, vidx);
+
+ err = request_irq(irq_num, idpf_vport_intr_clean_queues, 0,
+ q_vector->name, q_vector);
+ if (err) {
+ netdev_err(vport->netdev,
+ "Request_irq failed, error: %d\n", err);
+ goto free_q_irqs;
+ }
+ /* assign the mask for this irq */
+ irq_set_affinity_hint(irq_num, &q_vector->affinity_mask);
+ }
+
+ return 0;
+
+free_q_irqs:
+ while (--vector >= 0) {
+ vidx = vport->q_vector_idxs[vector];
+ irq_num = adapter->msix_entries[vidx].vector;
+ free_irq(irq_num, &vport->q_vectors[vector]);
+ }
+
+ return err;
+}
+
+/**
+ * idpf_vport_intr_write_itr - Write ITR value to the ITR register
+ * @q_vector: q_vector structure
+ * @itr: Interrupt throttling rate
+ * @tx: Tx or Rx ITR
+ */
+void idpf_vport_intr_write_itr(struct idpf_q_vector *q_vector, u16 itr, bool tx)
+{
+ struct idpf_intr_reg *intr_reg;
+
+ if (tx && !q_vector->tx)
+ return;
+ else if (!tx && !q_vector->rx)
+ return;
+
+ intr_reg = &q_vector->intr_reg;
+ writel(ITR_REG_ALIGN(itr) >> IDPF_ITR_GRAN_S,
+ tx ? intr_reg->tx_itr : intr_reg->rx_itr);
+}
+
+/**
+ * idpf_vport_intr_ena_irq_all - Enable IRQ for the given vport
+ * @vport: main vport structure
+ */
+static void idpf_vport_intr_ena_irq_all(struct idpf_vport *vport)
+{
+ bool dynamic;
+ int q_idx;
+ u16 itr;
+
+ for (q_idx = 0; q_idx < vport->num_q_vectors; q_idx++) {
+ struct idpf_q_vector *qv = &vport->q_vectors[q_idx];
+
+ /* Set the initial ITR values */
+ if (qv->num_txq) {
+ dynamic = IDPF_ITR_IS_DYNAMIC(qv->tx_intr_mode);
+ itr = vport->tx_itr_profile[qv->tx_dim.profile_ix];
+ idpf_vport_intr_write_itr(qv, dynamic ?
+ itr : qv->tx_itr_value,
+ true);
+ }
+
+ if (qv->num_rxq) {
+ dynamic = IDPF_ITR_IS_DYNAMIC(qv->rx_intr_mode);
+ itr = vport->rx_itr_profile[qv->rx_dim.profile_ix];
+ idpf_vport_intr_write_itr(qv, dynamic ?
+ itr : qv->rx_itr_value,
+ false);
+ }
+
+ if (qv->num_txq || qv->num_rxq)
+ idpf_vport_intr_update_itr_ena_irq(qv);
+ }
+}
+
+/**
+ * idpf_vport_intr_deinit - Release all vector associations for the vport
+ * @vport: main vport structure
+ */
+void idpf_vport_intr_deinit(struct idpf_vport *vport)
+{
+ idpf_vport_intr_napi_dis_all(vport);
+ idpf_vport_intr_napi_del_all(vport);
+ idpf_vport_intr_dis_irq_all(vport);
+ idpf_vport_intr_rel_irq(vport);
+}
+
+/**
+ * idpf_tx_dim_work - Call back from the stack
+ * @work: work queue structure
+ */
+static void idpf_tx_dim_work(struct work_struct *work)
+{
+ struct idpf_q_vector *q_vector;
+ struct idpf_vport *vport;
+ struct dim *dim;
+ u16 itr;
+
+ dim = container_of(work, struct dim, work);
+ q_vector = container_of(dim, struct idpf_q_vector, tx_dim);
+ vport = q_vector->vport;
+
+ if (dim->profile_ix >= ARRAY_SIZE(vport->tx_itr_profile))
+ dim->profile_ix = ARRAY_SIZE(vport->tx_itr_profile) - 1;
+
+ /* look up the values in our local table */
+ itr = vport->tx_itr_profile[dim->profile_ix];
+
+ idpf_vport_intr_write_itr(q_vector, itr, true);
+
+ dim->state = DIM_START_MEASURE;
+}
+
+/**
+ * idpf_rx_dim_work - Call back from the stack
+ * @work: work queue structure
+ */
+static void idpf_rx_dim_work(struct work_struct *work)
+{
+ struct idpf_q_vector *q_vector;
+ struct idpf_vport *vport;
+ struct dim *dim;
+ u16 itr;
+
+ dim = container_of(work, struct dim, work);
+ q_vector = container_of(dim, struct idpf_q_vector, rx_dim);
+ vport = q_vector->vport;
+
+ if (dim->profile_ix >= ARRAY_SIZE(vport->rx_itr_profile))
+ dim->profile_ix = ARRAY_SIZE(vport->rx_itr_profile) - 1;
+
+ /* look up the values in our local table */
+ itr = vport->rx_itr_profile[dim->profile_ix];
+
+ idpf_vport_intr_write_itr(q_vector, itr, false);
+
+ dim->state = DIM_START_MEASURE;
+}
+
+/**
+ * idpf_init_dim - Set up dynamic interrupt moderation
+ * @qv: q_vector structure
+ */
+static void idpf_init_dim(struct idpf_q_vector *qv)
+{
+ INIT_WORK(&qv->tx_dim.work, idpf_tx_dim_work);
+ qv->tx_dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
+ qv->tx_dim.profile_ix = IDPF_DIM_DEFAULT_PROFILE_IX;
+
+ INIT_WORK(&qv->rx_dim.work, idpf_rx_dim_work);
+ qv->rx_dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
+ qv->rx_dim.profile_ix = IDPF_DIM_DEFAULT_PROFILE_IX;
+}
+
+/**
+ * idpf_vport_intr_napi_ena_all - Enable NAPI for all q_vectors in the vport
+ * @vport: main vport structure
+ */
+static void idpf_vport_intr_napi_ena_all(struct idpf_vport *vport)
+{
+ int q_idx;
+
+ for (q_idx = 0; q_idx < vport->num_q_vectors; q_idx++) {
+ struct idpf_q_vector *q_vector = &vport->q_vectors[q_idx];
+
+ idpf_init_dim(q_vector);
+ napi_enable(&q_vector->napi);
+ }
+}
+
+/**
+ * idpf_tx_splitq_clean_all- Clean completion queues
+ * @q_vec: queue vector
+ * @budget: Used to determine if we are in netpoll
+ * @cleaned: returns number of packets cleaned
+ *
+ * Returns false if clean is not complete else returns true
+ */
+static bool idpf_tx_splitq_clean_all(struct idpf_q_vector *q_vec,
+ int budget, int *cleaned)
+{
+ u16 num_txq = q_vec->num_txq;
+ bool clean_complete = true;
+ int i, budget_per_q;
+
+ if (unlikely(!num_txq))
+ return true;
+
+ budget_per_q = DIV_ROUND_UP(budget, num_txq);
+ for (i = 0; i < num_txq; i++)
+ clean_complete &= idpf_tx_clean_complq(q_vec->tx[i],
+ budget_per_q, cleaned);
+
+ return clean_complete;
+}
+
+/**
+ * idpf_rx_splitq_clean_all- Clean completion queues
+ * @q_vec: queue vector
+ * @budget: Used to determine if we are in netpoll
+ * @cleaned: returns number of packets cleaned
+ *
+ * Returns false if clean is not complete else returns true
+ */
+static bool idpf_rx_splitq_clean_all(struct idpf_q_vector *q_vec, int budget,
+ int *cleaned)
+{
+ u16 num_rxq = q_vec->num_rxq;
+ bool clean_complete = true;
+ int pkts_cleaned = 0;
+ int i, budget_per_q;
+
+ /* We attempt to distribute budget to each Rx queue fairly, but don't
+ * allow the budget to go below 1 because that would exit polling early.
+ */
+ budget_per_q = num_rxq ? max(budget / num_rxq, 1) : 0;
+ for (i = 0; i < num_rxq; i++) {
+ struct idpf_queue *rxq = q_vec->rx[i];
+ int pkts_cleaned_per_q;
+
+ pkts_cleaned_per_q = idpf_rx_splitq_clean(rxq, budget_per_q);
+ /* if we clean as many as budgeted, we must not be done */
+ if (pkts_cleaned_per_q >= budget_per_q)
+ clean_complete = false;
+ pkts_cleaned += pkts_cleaned_per_q;
+ }
+ *cleaned = pkts_cleaned;
+
+ for (i = 0; i < q_vec->num_bufq; i++)
+ idpf_rx_clean_refillq_all(q_vec->bufq[i]);
+
+ return clean_complete;
+}
+
+/**
+ * idpf_vport_splitq_napi_poll - NAPI handler
+ * @napi: struct from which you get q_vector
+ * @budget: budget provided by stack
+ */
+static int idpf_vport_splitq_napi_poll(struct napi_struct *napi, int budget)
+{
+ struct idpf_q_vector *q_vector =
+ container_of(napi, struct idpf_q_vector, napi);
+ bool clean_complete;
+ int work_done = 0;
+
+ /* Handle case where we are called by netpoll with a budget of 0 */
+ if (unlikely(!budget)) {
+ idpf_tx_splitq_clean_all(q_vector, budget, &work_done);
+
+ return 0;
+ }
+
+ clean_complete = idpf_rx_splitq_clean_all(q_vector, budget, &work_done);
+ clean_complete &= idpf_tx_splitq_clean_all(q_vector, budget, &work_done);
+
+ /* If work not completed, return budget and polling will return */
+ if (!clean_complete)
+ return budget;
+
+ work_done = min_t(int, work_done, budget - 1);
+
+ /* Exit the polling mode, but don't re-enable interrupts if stack might
+ * poll us due to busy-polling
+ */
+ if (likely(napi_complete_done(napi, work_done)))
+ idpf_vport_intr_update_itr_ena_irq(q_vector);
+
+ /* Switch to poll mode in the tear-down path after sending disable
+ * queues virtchnl message, as the interrupts will be disabled after
+ * that
+ */
+ if (unlikely(q_vector->num_txq && test_bit(__IDPF_Q_POLL_MODE,
+ q_vector->tx[0]->flags)))
+ return budget;
+ else
+ return work_done;
+}
+
+/**
+ * idpf_vport_intr_map_vector_to_qs - Map vectors to queues
+ * @vport: virtual port
+ *
+ * Mapping for vectors to queues
+ */
+static void idpf_vport_intr_map_vector_to_qs(struct idpf_vport *vport)
+{
+ u16 num_txq_grp = vport->num_txq_grp;
+ int i, j, qv_idx, bufq_vidx = 0;
+ struct idpf_rxq_group *rx_qgrp;
+ struct idpf_txq_group *tx_qgrp;
+ struct idpf_queue *q, *bufq;
+ u16 q_index;
+
+ for (i = 0, qv_idx = 0; i < vport->num_rxq_grp; i++) {
+ u16 num_rxq;
+
+ rx_qgrp = &vport->rxq_grps[i];
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ num_rxq = rx_qgrp->splitq.num_rxq_sets;
+ else
+ num_rxq = rx_qgrp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq; j++) {
+ if (qv_idx >= vport->num_q_vectors)
+ qv_idx = 0;
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ q = &rx_qgrp->splitq.rxq_sets[j]->rxq;
+ else
+ q = rx_qgrp->singleq.rxqs[j];
+ q->q_vector = &vport->q_vectors[qv_idx];
+ q_index = q->q_vector->num_rxq;
+ q->q_vector->rx[q_index] = q;
+ q->q_vector->num_rxq++;
+ qv_idx++;
+ }
+
+ if (idpf_is_queue_model_split(vport->rxq_model)) {
+ for (j = 0; j < vport->num_bufqs_per_qgrp; j++) {
+ bufq = &rx_qgrp->splitq.bufq_sets[j].bufq;
+ bufq->q_vector = &vport->q_vectors[bufq_vidx];
+ q_index = bufq->q_vector->num_bufq;
+ bufq->q_vector->bufq[q_index] = bufq;
+ bufq->q_vector->num_bufq++;
+ }
+ if (++bufq_vidx >= vport->num_q_vectors)
+ bufq_vidx = 0;
+ }
+ }
+
+ for (i = 0, qv_idx = 0; i < num_txq_grp; i++) {
+ u16 num_txq;
+
+ tx_qgrp = &vport->txq_grps[i];
+ num_txq = tx_qgrp->num_txq;
+
+ if (idpf_is_queue_model_split(vport->txq_model)) {
+ if (qv_idx >= vport->num_q_vectors)
+ qv_idx = 0;
+
+ q = tx_qgrp->complq;
+ q->q_vector = &vport->q_vectors[qv_idx];
+ q_index = q->q_vector->num_txq;
+ q->q_vector->tx[q_index] = q;
+ q->q_vector->num_txq++;
+ qv_idx++;
+ } else {
+ for (j = 0; j < num_txq; j++) {
+ if (qv_idx >= vport->num_q_vectors)
+ qv_idx = 0;
+
+ q = tx_qgrp->txqs[j];
+ q->q_vector = &vport->q_vectors[qv_idx];
+ q_index = q->q_vector->num_txq;
+ q->q_vector->tx[q_index] = q;
+ q->q_vector->num_txq++;
+
+ qv_idx++;
+ }
+ }
+ }
+}
+
+/**
+ * idpf_vport_intr_init_vec_idx - Initialize the vector indexes
+ * @vport: virtual port
+ *
+ * Initialize vector indexes with values returened over mailbox
+ */
+static int idpf_vport_intr_init_vec_idx(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_alloc_vectors *ac;
+ u16 *vecids, total_vecs;
+ int i;
+
+ ac = adapter->req_vec_chunks;
+ if (!ac) {
+ for (i = 0; i < vport->num_q_vectors; i++)
+ vport->q_vectors[i].v_idx = vport->q_vector_idxs[i];
+
+ return 0;
+ }
+
+ total_vecs = idpf_get_reserved_vecs(adapter);
+ vecids = kcalloc(total_vecs, sizeof(u16), GFP_KERNEL);
+ if (!vecids)
+ return -ENOMEM;
+
+ idpf_get_vec_ids(adapter, vecids, total_vecs, &ac->vchunks);
+
+ for (i = 0; i < vport->num_q_vectors; i++)
+ vport->q_vectors[i].v_idx = vecids[vport->q_vector_idxs[i]];
+
+ kfree(vecids);
+
+ return 0;
+}
+
+/**
+ * idpf_vport_intr_napi_add_all- Register napi handler for all qvectors
+ * @vport: virtual port structure
+ */
+static void idpf_vport_intr_napi_add_all(struct idpf_vport *vport)
+{
+ int (*napi_poll)(struct napi_struct *napi, int budget);
+ u16 v_idx;
+
+ if (idpf_is_queue_model_split(vport->txq_model))
+ napi_poll = idpf_vport_splitq_napi_poll;
+ else
+ napi_poll = idpf_vport_singleq_napi_poll;
+
+ for (v_idx = 0; v_idx < vport->num_q_vectors; v_idx++) {
+ struct idpf_q_vector *q_vector = &vport->q_vectors[v_idx];
+
+ netif_napi_add(vport->netdev, &q_vector->napi, napi_poll);
+
+ /* only set affinity_mask if the CPU is online */
+ if (cpu_online(v_idx))
+ cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
+ }
+}
+
+/**
+ * idpf_vport_intr_alloc - Allocate memory for interrupt vectors
+ * @vport: virtual port
+ *
+ * We allocate one q_vector per queue interrupt. If allocation fails we
+ * return -ENOMEM.
+ */
+int idpf_vport_intr_alloc(struct idpf_vport *vport)
+{
+ u16 txqs_per_vector, rxqs_per_vector, bufqs_per_vector;
+ struct idpf_q_vector *q_vector;
+ int v_idx, err;
+
+ vport->q_vectors = kcalloc(vport->num_q_vectors,
+ sizeof(struct idpf_q_vector), GFP_KERNEL);
+ if (!vport->q_vectors)
+ return -ENOMEM;
+
+ txqs_per_vector = DIV_ROUND_UP(vport->num_txq, vport->num_q_vectors);
+ rxqs_per_vector = DIV_ROUND_UP(vport->num_rxq, vport->num_q_vectors);
+ bufqs_per_vector = vport->num_bufqs_per_qgrp *
+ DIV_ROUND_UP(vport->num_rxq_grp,
+ vport->num_q_vectors);
+
+ for (v_idx = 0; v_idx < vport->num_q_vectors; v_idx++) {
+ q_vector = &vport->q_vectors[v_idx];
+ q_vector->vport = vport;
+
+ q_vector->tx_itr_value = IDPF_ITR_TX_DEF;
+ q_vector->tx_intr_mode = IDPF_ITR_DYNAMIC;
+ q_vector->tx_itr_idx = VIRTCHNL2_ITR_IDX_1;
+
+ q_vector->rx_itr_value = IDPF_ITR_RX_DEF;
+ q_vector->rx_intr_mode = IDPF_ITR_DYNAMIC;
+ q_vector->rx_itr_idx = VIRTCHNL2_ITR_IDX_0;
+
+ q_vector->tx = kcalloc(txqs_per_vector,
+ sizeof(struct idpf_queue *),
+ GFP_KERNEL);
+ if (!q_vector->tx) {
+ err = -ENOMEM;
+ goto error;
+ }
+
+ q_vector->rx = kcalloc(rxqs_per_vector,
+ sizeof(struct idpf_queue *),
+ GFP_KERNEL);
+ if (!q_vector->rx) {
+ err = -ENOMEM;
+ goto error;
+ }
+
+ if (!idpf_is_queue_model_split(vport->rxq_model))
+ continue;
+
+ q_vector->bufq = kcalloc(bufqs_per_vector,
+ sizeof(struct idpf_queue *),
+ GFP_KERNEL);
+ if (!q_vector->bufq) {
+ err = -ENOMEM;
+ goto error;
+ }
+ }
+
+ return 0;
+
+error:
+ idpf_vport_intr_rel(vport);
+
+ return err;
+}
+
+/**
+ * idpf_vport_intr_init - Setup all vectors for the given vport
+ * @vport: virtual port
+ *
+ * Returns 0 on success or negative on failure
+ */
+int idpf_vport_intr_init(struct idpf_vport *vport)
+{
+ char *int_name;
+ int err;
+
+ err = idpf_vport_intr_init_vec_idx(vport);
+ if (err)
+ return err;
+
+ idpf_vport_intr_map_vector_to_qs(vport);
+ idpf_vport_intr_napi_add_all(vport);
+ idpf_vport_intr_napi_ena_all(vport);
+
+ err = vport->adapter->dev_ops.reg_ops.intr_reg_init(vport);
+ if (err)
+ goto unroll_vectors_alloc;
+
+ int_name = kasprintf(GFP_KERNEL, "%s-%s",
+ dev_driver_string(&vport->adapter->pdev->dev),
+ vport->netdev->name);
+
+ err = idpf_vport_intr_req_irq(vport, int_name);
+ if (err)
+ goto unroll_vectors_alloc;
+
+ idpf_vport_intr_ena_irq_all(vport);
+
+ return 0;
+
+unroll_vectors_alloc:
+ idpf_vport_intr_napi_dis_all(vport);
+ idpf_vport_intr_napi_del_all(vport);
+
+ return err;
+}
+
+/**
+ * idpf_config_rss - Send virtchnl messages to configure RSS
+ * @vport: virtual port
+ *
+ * Return 0 on success, negative on failure
+ */
+int idpf_config_rss(struct idpf_vport *vport)
+{
+ int err;
+
+ err = idpf_send_get_set_rss_key_msg(vport, false);
+ if (err)
+ return err;
+
+ return idpf_send_get_set_rss_lut_msg(vport, false);
+}
+
+/**
+ * idpf_fill_dflt_rss_lut - Fill the indirection table with the default values
+ * @vport: virtual port structure
+ */
+static void idpf_fill_dflt_rss_lut(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ u16 num_active_rxq = vport->num_rxq;
+ struct idpf_rss_data *rss_data;
+ int i;
+
+ rss_data = &adapter->vport_config[vport->idx]->user_config.rss_data;
+
+ for (i = 0; i < rss_data->rss_lut_size; i++) {
+ rss_data->rss_lut[i] = i % num_active_rxq;
+ rss_data->cached_lut[i] = rss_data->rss_lut[i];
+ }
+}
+
+/**
+ * idpf_init_rss - Allocate and initialize RSS resources
+ * @vport: virtual port
+ *
+ * Return 0 on success, negative on failure
+ */
+int idpf_init_rss(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct idpf_rss_data *rss_data;
+ u32 lut_size;
+
+ rss_data = &adapter->vport_config[vport->idx]->user_config.rss_data;
+
+ lut_size = rss_data->rss_lut_size * sizeof(u32);
+ rss_data->rss_lut = kzalloc(lut_size, GFP_KERNEL);
+ if (!rss_data->rss_lut)
+ return -ENOMEM;
+
+ rss_data->cached_lut = kzalloc(lut_size, GFP_KERNEL);
+ if (!rss_data->cached_lut) {
+ kfree(rss_data->rss_lut);
+ rss_data->rss_lut = NULL;
+
+ return -ENOMEM;
+ }
+
+ /* Fill the default RSS lut values */
+ idpf_fill_dflt_rss_lut(vport);
+
+ return idpf_config_rss(vport);
+}
+
+/**
+ * idpf_deinit_rss - Release RSS resources
+ * @vport: virtual port
+ */
+void idpf_deinit_rss(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct idpf_rss_data *rss_data;
+
+ rss_data = &adapter->vport_config[vport->idx]->user_config.rss_data;
+ kfree(rss_data->cached_lut);
+ rss_data->cached_lut = NULL;
+ kfree(rss_data->rss_lut);
+ rss_data->rss_lut = NULL;
+}
diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.h b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
new file mode 100644
index 0000000..e20b0ea
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
@@ -0,0 +1,1023 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_TXRX_H_
+#define _IDPF_TXRX_H_
+
+#include <net/page_pool.h>
+#include <net/tcp.h>
+#include <net/netdev_queues.h>
+
+#define IDPF_LARGE_MAX_Q 256
+#define IDPF_MAX_Q 16
+#define IDPF_MIN_Q 2
+/* Mailbox Queue */
+#define IDPF_MAX_MBXQ 1
+
+#define IDPF_MIN_TXQ_DESC 64
+#define IDPF_MIN_RXQ_DESC 64
+#define IDPF_MIN_TXQ_COMPLQ_DESC 256
+#define IDPF_MAX_QIDS 256
+
+/* Number of descriptors in a queue should be a multiple of 32. RX queue
+ * descriptors alone should be a multiple of IDPF_REQ_RXQ_DESC_MULTIPLE
+ * to achieve BufQ descriptors aligned to 32
+ */
+#define IDPF_REQ_DESC_MULTIPLE 32
+#define IDPF_REQ_RXQ_DESC_MULTIPLE (IDPF_MAX_BUFQS_PER_RXQ_GRP * 32)
+#define IDPF_MIN_TX_DESC_NEEDED (MAX_SKB_FRAGS + 6)
+#define IDPF_TX_WAKE_THRESH ((u16)IDPF_MIN_TX_DESC_NEEDED * 2)
+
+#define IDPF_MAX_DESCS 8160
+#define IDPF_MAX_TXQ_DESC ALIGN_DOWN(IDPF_MAX_DESCS, IDPF_REQ_DESC_MULTIPLE)
+#define IDPF_MAX_RXQ_DESC ALIGN_DOWN(IDPF_MAX_DESCS, IDPF_REQ_RXQ_DESC_MULTIPLE)
+#define MIN_SUPPORT_TXDID (\
+ VIRTCHNL2_TXDID_FLEX_FLOW_SCHED |\
+ VIRTCHNL2_TXDID_FLEX_TSO_CTX)
+
+#define IDPF_DFLT_SINGLEQ_TX_Q_GROUPS 1
+#define IDPF_DFLT_SINGLEQ_RX_Q_GROUPS 1
+#define IDPF_DFLT_SINGLEQ_TXQ_PER_GROUP 4
+#define IDPF_DFLT_SINGLEQ_RXQ_PER_GROUP 4
+
+#define IDPF_COMPLQ_PER_GROUP 1
+#define IDPF_SINGLE_BUFQ_PER_RXQ_GRP 1
+#define IDPF_MAX_BUFQS_PER_RXQ_GRP 2
+#define IDPF_BUFQ2_ENA 1
+#define IDPF_NUMQ_PER_CHUNK 1
+
+#define IDPF_DFLT_SPLITQ_TXQ_PER_GROUP 1
+#define IDPF_DFLT_SPLITQ_RXQ_PER_GROUP 1
+
+/* Default vector sharing */
+#define IDPF_MBX_Q_VEC 1
+#define IDPF_MIN_Q_VEC 1
+
+#define IDPF_DFLT_TX_Q_DESC_COUNT 512
+#define IDPF_DFLT_TX_COMPLQ_DESC_COUNT 512
+#define IDPF_DFLT_RX_Q_DESC_COUNT 512
+
+/* IMPORTANT: We absolutely _cannot_ have more buffers in the system than a
+ * given RX completion queue has descriptors. This includes _ALL_ buffer
+ * queues. E.g.: If you have two buffer queues of 512 descriptors and buffers,
+ * you have a total of 1024 buffers so your RX queue _must_ have at least that
+ * many descriptors. This macro divides a given number of RX descriptors by
+ * number of buffer queues to calculate how many descriptors each buffer queue
+ * can have without overrunning the RX queue.
+ *
+ * If you give hardware more buffers than completion descriptors what will
+ * happen is that if hardware gets a chance to post more than ring wrap of
+ * descriptors before SW gets an interrupt and overwrites SW head, the gen bit
+ * in the descriptor will be wrong. Any overwritten descriptors' buffers will
+ * be gone forever and SW has no reasonable way to tell that this has happened.
+ * From SW perspective, when we finally get an interrupt, it looks like we're
+ * still waiting for descriptor to be done, stalling forever.
+ */
+#define IDPF_RX_BUFQ_DESC_COUNT(RXD, NUM_BUFQ) ((RXD) / (NUM_BUFQ))
+
+#define IDPF_RX_BUFQ_WORKING_SET(rxq) ((rxq)->desc_count - 1)
+
+#define IDPF_RX_BUMP_NTC(rxq, ntc) \
+do { \
+ if (unlikely(++(ntc) == (rxq)->desc_count)) { \
+ ntc = 0; \
+ change_bit(__IDPF_Q_GEN_CHK, (rxq)->flags); \
+ } \
+} while (0)
+
+#define IDPF_SINGLEQ_BUMP_RING_IDX(q, idx) \
+do { \
+ if (unlikely(++(idx) == (q)->desc_count)) \
+ idx = 0; \
+} while (0)
+
+#define IDPF_RX_HDR_SIZE 256
+#define IDPF_RX_BUF_2048 2048
+#define IDPF_RX_BUF_4096 4096
+#define IDPF_RX_BUF_STRIDE 32
+#define IDPF_RX_BUF_POST_STRIDE 16
+#define IDPF_LOW_WATERMARK 64
+/* Size of header buffer specifically for header split */
+#define IDPF_HDR_BUF_SIZE 256
+#define IDPF_PACKET_HDR_PAD \
+ (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN * 2)
+#define IDPF_TX_TSO_MIN_MSS 88
+
+/* Minimum number of descriptors between 2 descriptors with the RE bit set;
+ * only relevant in flow scheduling mode
+ */
+#define IDPF_TX_SPLITQ_RE_MIN_GAP 64
+
+#define IDPF_RX_BI_BUFID_S 0
+#define IDPF_RX_BI_BUFID_M GENMASK(14, 0)
+#define IDPF_RX_BI_GEN_S 15
+#define IDPF_RX_BI_GEN_M BIT(IDPF_RX_BI_GEN_S)
+#define IDPF_RXD_EOF_SPLITQ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_EOF_M
+#define IDPF_RXD_EOF_SINGLEQ VIRTCHNL2_RX_BASE_DESC_STATUS_EOF_M
+
+#define IDPF_SINGLEQ_RX_BUF_DESC(rxq, i) \
+ (&(((struct virtchnl2_singleq_rx_buf_desc *)((rxq)->desc_ring))[i]))
+#define IDPF_SPLITQ_RX_BUF_DESC(rxq, i) \
+ (&(((struct virtchnl2_splitq_rx_buf_desc *)((rxq)->desc_ring))[i]))
+#define IDPF_SPLITQ_RX_BI_DESC(rxq, i) ((((rxq)->ring))[i])
+
+#define IDPF_BASE_TX_DESC(txq, i) \
+ (&(((struct idpf_base_tx_desc *)((txq)->desc_ring))[i]))
+#define IDPF_BASE_TX_CTX_DESC(txq, i) \
+ (&(((struct idpf_base_tx_ctx_desc *)((txq)->desc_ring))[i]))
+#define IDPF_SPLITQ_TX_COMPLQ_DESC(txcq, i) \
+ (&(((struct idpf_splitq_tx_compl_desc *)((txcq)->desc_ring))[i]))
+
+#define IDPF_FLEX_TX_DESC(txq, i) \
+ (&(((union idpf_tx_flex_desc *)((txq)->desc_ring))[i]))
+#define IDPF_FLEX_TX_CTX_DESC(txq, i) \
+ (&(((struct idpf_flex_tx_ctx_desc *)((txq)->desc_ring))[i]))
+
+#define IDPF_DESC_UNUSED(txq) \
+ ((((txq)->next_to_clean > (txq)->next_to_use) ? 0 : (txq)->desc_count) + \
+ (txq)->next_to_clean - (txq)->next_to_use - 1)
+
+#define IDPF_TX_BUF_RSV_UNUSED(txq) ((txq)->buf_stack.top)
+#define IDPF_TX_BUF_RSV_LOW(txq) (IDPF_TX_BUF_RSV_UNUSED(txq) < \
+ (txq)->desc_count >> 2)
+
+#define IDPF_TX_COMPLQ_OVERFLOW_THRESH(txcq) ((txcq)->desc_count >> 1)
+/* Determine the absolute number of completions pending, i.e. the number of
+ * completions that are expected to arrive on the TX completion queue.
+ */
+#define IDPF_TX_COMPLQ_PENDING(txq) \
+ (((txq)->num_completions_pending >= (txq)->complq->num_completions ? \
+ 0 : U64_MAX) + \
+ (txq)->num_completions_pending - (txq)->complq->num_completions)
+
+#define IDPF_TX_SPLITQ_COMPL_TAG_WIDTH 16
+#define IDPF_SPLITQ_TX_INVAL_COMPL_TAG -1
+/* Adjust the generation for the completion tag and wrap if necessary */
+#define IDPF_TX_ADJ_COMPL_TAG_GEN(txq) \
+ ((++(txq)->compl_tag_cur_gen) >= (txq)->compl_tag_gen_max ? \
+ 0 : (txq)->compl_tag_cur_gen)
+
+#define IDPF_TXD_LAST_DESC_CMD (IDPF_TX_DESC_CMD_EOP | IDPF_TX_DESC_CMD_RS)
+
+#define IDPF_TX_FLAGS_TSO BIT(0)
+#define IDPF_TX_FLAGS_IPV4 BIT(1)
+#define IDPF_TX_FLAGS_IPV6 BIT(2)
+#define IDPF_TX_FLAGS_TUNNEL BIT(3)
+
+union idpf_tx_flex_desc {
+ struct idpf_flex_tx_desc q; /* queue based scheduling */
+ struct idpf_flex_tx_sched_desc flow; /* flow based scheduling */
+};
+
+/**
+ * struct idpf_tx_buf
+ * @next_to_watch: Next descriptor to clean
+ * @skb: Pointer to the skb
+ * @dma: DMA address
+ * @len: DMA length
+ * @bytecount: Number of bytes
+ * @gso_segs: Number of GSO segments
+ * @compl_tag: Splitq only, unique identifier for a buffer. Used to compare
+ * with completion tag returned in buffer completion event.
+ * Because the completion tag is expected to be the same in all
+ * data descriptors for a given packet, and a single packet can
+ * span multiple buffers, we need this field to track all
+ * buffers associated with this completion tag independently of
+ * the buf_id. The tag consists of a N bit buf_id and M upper
+ * order "generation bits". See compl_tag_bufid_m and
+ * compl_tag_gen_s in struct idpf_queue. We'll use a value of -1
+ * to indicate the tag is not valid.
+ * @ctx_entry: Singleq only. Used to indicate the corresponding entry
+ * in the descriptor ring was used for a context descriptor and
+ * this buffer entry should be skipped.
+ */
+struct idpf_tx_buf {
+ void *next_to_watch;
+ struct sk_buff *skb;
+ DEFINE_DMA_UNMAP_ADDR(dma);
+ DEFINE_DMA_UNMAP_LEN(len);
+ unsigned int bytecount;
+ unsigned short gso_segs;
+
+ union {
+ int compl_tag;
+
+ bool ctx_entry;
+ };
+};
+
+struct idpf_tx_stash {
+ struct hlist_node hlist;
+ struct idpf_tx_buf buf;
+};
+
+/**
+ * struct idpf_buf_lifo - LIFO for managing OOO completions
+ * @top: Used to know how many buffers are left
+ * @size: Total size of LIFO
+ * @bufs: Backing array
+ */
+struct idpf_buf_lifo {
+ u16 top;
+ u16 size;
+ struct idpf_tx_stash **bufs;
+};
+
+/**
+ * struct idpf_tx_offload_params - Offload parameters for a given packet
+ * @tx_flags: Feature flags enabled for this packet
+ * @hdr_offsets: Offset parameter for single queue model
+ * @cd_tunneling: Type of tunneling enabled for single queue model
+ * @tso_len: Total length of payload to segment
+ * @mss: Segment size
+ * @tso_segs: Number of segments to be sent
+ * @tso_hdr_len: Length of headers to be duplicated
+ * @td_cmd: Command field to be inserted into descriptor
+ */
+struct idpf_tx_offload_params {
+ u32 tx_flags;
+
+ u32 hdr_offsets;
+ u32 cd_tunneling;
+
+ u32 tso_len;
+ u16 mss;
+ u16 tso_segs;
+ u16 tso_hdr_len;
+
+ u16 td_cmd;
+};
+
+/**
+ * struct idpf_tx_splitq_params
+ * @dtype: General descriptor info
+ * @eop_cmd: Type of EOP
+ * @compl_tag: Associated tag for completion
+ * @td_tag: Descriptor tunneling tag
+ * @offload: Offload parameters
+ */
+struct idpf_tx_splitq_params {
+ enum idpf_tx_desc_dtype_value dtype;
+ u16 eop_cmd;
+ union {
+ u16 compl_tag;
+ u16 td_tag;
+ };
+
+ struct idpf_tx_offload_params offload;
+};
+
+enum idpf_tx_ctx_desc_eipt_offload {
+ IDPF_TX_CTX_EXT_IP_NONE = 0x0,
+ IDPF_TX_CTX_EXT_IP_IPV6 = 0x1,
+ IDPF_TX_CTX_EXT_IP_IPV4_NO_CSUM = 0x2,
+ IDPF_TX_CTX_EXT_IP_IPV4 = 0x3
+};
+
+/* Checksum offload bits decoded from the receive descriptor. */
+struct idpf_rx_csum_decoded {
+ u32 l3l4p : 1;
+ u32 ipe : 1;
+ u32 eipe : 1;
+ u32 eudpe : 1;
+ u32 ipv6exadd : 1;
+ u32 l4e : 1;
+ u32 pprs : 1;
+ u32 nat : 1;
+ u32 raw_csum_inv : 1;
+ u32 raw_csum : 16;
+};
+
+struct idpf_rx_extracted {
+ unsigned int size;
+ u16 rx_ptype;
+};
+
+#define IDPF_TX_COMPLQ_CLEAN_BUDGET 256
+#define IDPF_TX_MIN_PKT_LEN 17
+#define IDPF_TX_DESCS_FOR_SKB_DATA_PTR 1
+#define IDPF_TX_DESCS_PER_CACHE_LINE (L1_CACHE_BYTES / \
+ sizeof(struct idpf_flex_tx_desc))
+#define IDPF_TX_DESCS_FOR_CTX 1
+/* TX descriptors needed, worst case */
+#define IDPF_TX_DESC_NEEDED (MAX_SKB_FRAGS + IDPF_TX_DESCS_FOR_CTX + \
+ IDPF_TX_DESCS_PER_CACHE_LINE + \
+ IDPF_TX_DESCS_FOR_SKB_DATA_PTR)
+
+/* The size limit for a transmit buffer in a descriptor is (16K - 1).
+ * In order to align with the read requests we will align the value to
+ * the nearest 4K which represents our maximum read request size.
+ */
+#define IDPF_TX_MAX_READ_REQ_SIZE SZ_4K
+#define IDPF_TX_MAX_DESC_DATA (SZ_16K - 1)
+#define IDPF_TX_MAX_DESC_DATA_ALIGNED \
+ ALIGN_DOWN(IDPF_TX_MAX_DESC_DATA, IDPF_TX_MAX_READ_REQ_SIZE)
+
+#define IDPF_RX_DMA_ATTR \
+ (DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING)
+#define IDPF_RX_DESC(rxq, i) \
+ (&(((union virtchnl2_rx_desc *)((rxq)->desc_ring))[i]))
+
+struct idpf_rx_buf {
+ struct page *page;
+ unsigned int page_offset;
+ u16 truesize;
+};
+
+#define IDPF_RX_MAX_PTYPE_PROTO_IDS 32
+#define IDPF_RX_MAX_PTYPE_SZ (sizeof(struct virtchnl2_ptype) + \
+ (sizeof(u16) * IDPF_RX_MAX_PTYPE_PROTO_IDS))
+#define IDPF_RX_PTYPE_HDR_SZ sizeof(struct virtchnl2_get_ptype_info)
+#define IDPF_RX_MAX_PTYPES_PER_BUF \
+ DIV_ROUND_DOWN_ULL((IDPF_CTLQ_MAX_BUF_LEN - IDPF_RX_PTYPE_HDR_SZ), \
+ IDPF_RX_MAX_PTYPE_SZ)
+
+#define IDPF_GET_PTYPE_SIZE(p) struct_size((p), proto_id, (p)->proto_id_count)
+
+#define IDPF_TUN_IP_GRE (\
+ IDPF_PTYPE_TUNNEL_IP |\
+ IDPF_PTYPE_TUNNEL_IP_GRENAT)
+
+#define IDPF_TUN_IP_GRE_MAC (\
+ IDPF_TUN_IP_GRE |\
+ IDPF_PTYPE_TUNNEL_IP_GRENAT_MAC)
+
+#define IDPF_RX_MAX_PTYPE 1024
+#define IDPF_RX_MAX_BASE_PTYPE 256
+#define IDPF_INVALID_PTYPE_ID 0xFFFF
+
+/* Packet type non-ip values */
+enum idpf_rx_ptype_l2 {
+ IDPF_RX_PTYPE_L2_RESERVED = 0,
+ IDPF_RX_PTYPE_L2_MAC_PAY2 = 1,
+ IDPF_RX_PTYPE_L2_TIMESYNC_PAY2 = 2,
+ IDPF_RX_PTYPE_L2_FIP_PAY2 = 3,
+ IDPF_RX_PTYPE_L2_OUI_PAY2 = 4,
+ IDPF_RX_PTYPE_L2_MACCNTRL_PAY2 = 5,
+ IDPF_RX_PTYPE_L2_LLDP_PAY2 = 6,
+ IDPF_RX_PTYPE_L2_ECP_PAY2 = 7,
+ IDPF_RX_PTYPE_L2_EVB_PAY2 = 8,
+ IDPF_RX_PTYPE_L2_QCN_PAY2 = 9,
+ IDPF_RX_PTYPE_L2_EAPOL_PAY2 = 10,
+ IDPF_RX_PTYPE_L2_ARP = 11,
+};
+
+enum idpf_rx_ptype_outer_ip {
+ IDPF_RX_PTYPE_OUTER_L2 = 0,
+ IDPF_RX_PTYPE_OUTER_IP = 1,
+};
+
+#define IDPF_RX_PTYPE_TO_IPV(ptype, ipv) \
+ (((ptype)->outer_ip == IDPF_RX_PTYPE_OUTER_IP) && \
+ ((ptype)->outer_ip_ver == (ipv)))
+
+enum idpf_rx_ptype_outer_ip_ver {
+ IDPF_RX_PTYPE_OUTER_NONE = 0,
+ IDPF_RX_PTYPE_OUTER_IPV4 = 1,
+ IDPF_RX_PTYPE_OUTER_IPV6 = 2,
+};
+
+enum idpf_rx_ptype_outer_fragmented {
+ IDPF_RX_PTYPE_NOT_FRAG = 0,
+ IDPF_RX_PTYPE_FRAG = 1,
+};
+
+enum idpf_rx_ptype_tunnel_type {
+ IDPF_RX_PTYPE_TUNNEL_NONE = 0,
+ IDPF_RX_PTYPE_TUNNEL_IP_IP = 1,
+ IDPF_RX_PTYPE_TUNNEL_IP_GRENAT = 2,
+ IDPF_RX_PTYPE_TUNNEL_IP_GRENAT_MAC = 3,
+ IDPF_RX_PTYPE_TUNNEL_IP_GRENAT_MAC_VLAN = 4,
+};
+
+enum idpf_rx_ptype_tunnel_end_prot {
+ IDPF_RX_PTYPE_TUNNEL_END_NONE = 0,
+ IDPF_RX_PTYPE_TUNNEL_END_IPV4 = 1,
+ IDPF_RX_PTYPE_TUNNEL_END_IPV6 = 2,
+};
+
+enum idpf_rx_ptype_inner_prot {
+ IDPF_RX_PTYPE_INNER_PROT_NONE = 0,
+ IDPF_RX_PTYPE_INNER_PROT_UDP = 1,
+ IDPF_RX_PTYPE_INNER_PROT_TCP = 2,
+ IDPF_RX_PTYPE_INNER_PROT_SCTP = 3,
+ IDPF_RX_PTYPE_INNER_PROT_ICMP = 4,
+ IDPF_RX_PTYPE_INNER_PROT_TIMESYNC = 5,
+};
+
+enum idpf_rx_ptype_payload_layer {
+ IDPF_RX_PTYPE_PAYLOAD_LAYER_NONE = 0,
+ IDPF_RX_PTYPE_PAYLOAD_LAYER_PAY2 = 1,
+ IDPF_RX_PTYPE_PAYLOAD_LAYER_PAY3 = 2,
+ IDPF_RX_PTYPE_PAYLOAD_LAYER_PAY4 = 3,
+};
+
+enum idpf_tunnel_state {
+ IDPF_PTYPE_TUNNEL_IP = BIT(0),
+ IDPF_PTYPE_TUNNEL_IP_GRENAT = BIT(1),
+ IDPF_PTYPE_TUNNEL_IP_GRENAT_MAC = BIT(2),
+};
+
+struct idpf_ptype_state {
+ bool outer_ip;
+ bool outer_frag;
+ u8 tunnel_state;
+};
+
+struct idpf_rx_ptype_decoded {
+ u32 ptype:10;
+ u32 known:1;
+ u32 outer_ip:1;
+ u32 outer_ip_ver:2;
+ u32 outer_frag:1;
+ u32 tunnel_type:3;
+ u32 tunnel_end_prot:2;
+ u32 tunnel_end_frag:1;
+ u32 inner_prot:4;
+ u32 payload_layer:3;
+};
+
+/**
+ * enum idpf_queue_flags_t
+ * @__IDPF_Q_GEN_CHK: Queues operating in splitq mode use a generation bit to
+ * identify new descriptor writebacks on the ring. HW sets
+ * the gen bit to 1 on the first writeback of any given
+ * descriptor. After the ring wraps, HW sets the gen bit of
+ * those descriptors to 0, and continues flipping
+ * 0->1 or 1->0 on each ring wrap. SW maintains its own
+ * gen bit to know what value will indicate writebacks on
+ * the next pass around the ring. E.g. it is initialized
+ * to 1 and knows that reading a gen bit of 1 in any
+ * descriptor on the initial pass of the ring indicates a
+ * writeback. It also flips on every ring wrap.
+ * @__IDPF_RFLQ_GEN_CHK: Refill queues are SW only, so Q_GEN acts as the HW bit
+ * and RFLGQ_GEN is the SW bit.
+ * @__IDPF_Q_FLOW_SCH_EN: Enable flow scheduling
+ * @__IDPF_Q_SW_MARKER: Used to indicate TX queue marker completions
+ * @__IDPF_Q_POLL_MODE: Enable poll mode
+ * @__IDPF_Q_FLAGS_NBITS: Must be last
+ */
+enum idpf_queue_flags_t {
+ __IDPF_Q_GEN_CHK,
+ __IDPF_RFLQ_GEN_CHK,
+ __IDPF_Q_FLOW_SCH_EN,
+ __IDPF_Q_SW_MARKER,
+ __IDPF_Q_POLL_MODE,
+
+ __IDPF_Q_FLAGS_NBITS,
+};
+
+/**
+ * struct idpf_vec_regs
+ * @dyn_ctl_reg: Dynamic control interrupt register offset
+ * @itrn_reg: Interrupt Throttling Rate register offset
+ * @itrn_index_spacing: Register spacing between ITR registers of the same
+ * vector
+ */
+struct idpf_vec_regs {
+ u32 dyn_ctl_reg;
+ u32 itrn_reg;
+ u32 itrn_index_spacing;
+};
+
+/**
+ * struct idpf_intr_reg
+ * @dyn_ctl: Dynamic control interrupt register
+ * @dyn_ctl_intena_m: Mask for dyn_ctl interrupt enable
+ * @dyn_ctl_itridx_s: Register bit offset for ITR index
+ * @dyn_ctl_itridx_m: Mask for ITR index
+ * @dyn_ctl_intrvl_s: Register bit offset for ITR interval
+ * @rx_itr: RX ITR register
+ * @tx_itr: TX ITR register
+ * @icr_ena: Interrupt cause register offset
+ * @icr_ena_ctlq_m: Mask for ICR
+ */
+struct idpf_intr_reg {
+ void __iomem *dyn_ctl;
+ u32 dyn_ctl_intena_m;
+ u32 dyn_ctl_itridx_s;
+ u32 dyn_ctl_itridx_m;
+ u32 dyn_ctl_intrvl_s;
+ void __iomem *rx_itr;
+ void __iomem *tx_itr;
+ void __iomem *icr_ena;
+ u32 icr_ena_ctlq_m;
+};
+
+/**
+ * struct idpf_q_vector
+ * @vport: Vport back pointer
+ * @affinity_mask: CPU affinity mask
+ * @napi: napi handler
+ * @v_idx: Vector index
+ * @intr_reg: See struct idpf_intr_reg
+ * @num_txq: Number of TX queues
+ * @tx: Array of TX queues to service
+ * @tx_dim: Data for TX net_dim algorithm
+ * @tx_itr_value: TX interrupt throttling rate
+ * @tx_intr_mode: Dynamic ITR or not
+ * @tx_itr_idx: TX ITR index
+ * @num_rxq: Number of RX queues
+ * @rx: Array of RX queues to service
+ * @rx_dim: Data for RX net_dim algorithm
+ * @rx_itr_value: RX interrupt throttling rate
+ * @rx_intr_mode: Dynamic ITR or not
+ * @rx_itr_idx: RX ITR index
+ * @num_bufq: Number of buffer queues
+ * @bufq: Array of buffer queues to service
+ * @total_events: Number of interrupts processed
+ * @name: Queue vector name
+ */
+struct idpf_q_vector {
+ struct idpf_vport *vport;
+ cpumask_t affinity_mask;
+ struct napi_struct napi;
+ u16 v_idx;
+ struct idpf_intr_reg intr_reg;
+
+ u16 num_txq;
+ struct idpf_queue **tx;
+ struct dim tx_dim;
+ u16 tx_itr_value;
+ bool tx_intr_mode;
+ u32 tx_itr_idx;
+
+ u16 num_rxq;
+ struct idpf_queue **rx;
+ struct dim rx_dim;
+ u16 rx_itr_value;
+ bool rx_intr_mode;
+ u32 rx_itr_idx;
+
+ u16 num_bufq;
+ struct idpf_queue **bufq;
+
+ u16 total_events;
+ char *name;
+};
+
+struct idpf_rx_queue_stats {
+ u64_stats_t packets;
+ u64_stats_t bytes;
+ u64_stats_t rsc_pkts;
+ u64_stats_t hw_csum_err;
+ u64_stats_t hsplit_pkts;
+ u64_stats_t hsplit_buf_ovf;
+ u64_stats_t bad_descs;
+};
+
+struct idpf_tx_queue_stats {
+ u64_stats_t packets;
+ u64_stats_t bytes;
+ u64_stats_t lso_pkts;
+ u64_stats_t linearize;
+ u64_stats_t q_busy;
+ u64_stats_t skb_drops;
+ u64_stats_t dma_map_errs;
+};
+
+struct idpf_cleaned_stats {
+ u32 packets;
+ u32 bytes;
+};
+
+union idpf_queue_stats {
+ struct idpf_rx_queue_stats rx;
+ struct idpf_tx_queue_stats tx;
+};
+
+#define IDPF_ITR_DYNAMIC 1
+#define IDPF_ITR_MAX 0x1FE0
+#define IDPF_ITR_20K 0x0032
+#define IDPF_ITR_GRAN_S 1 /* Assume ITR granularity is 2us */
+#define IDPF_ITR_MASK 0x1FFE /* ITR register value alignment mask */
+#define ITR_REG_ALIGN(setting) ((setting) & IDPF_ITR_MASK)
+#define IDPF_ITR_IS_DYNAMIC(itr_mode) (itr_mode)
+#define IDPF_ITR_TX_DEF IDPF_ITR_20K
+#define IDPF_ITR_RX_DEF IDPF_ITR_20K
+/* Index used for 'No ITR' update in DYN_CTL register */
+#define IDPF_NO_ITR_UPDATE_IDX 3
+#define IDPF_ITR_IDX_SPACING(spacing, dflt) (spacing ? spacing : dflt)
+#define IDPF_DIM_DEFAULT_PROFILE_IX 1
+
+/**
+ * struct idpf_queue
+ * @dev: Device back pointer for DMA mapping
+ * @vport: Back pointer to associated vport
+ * @txq_grp: See struct idpf_txq_group
+ * @rxq_grp: See struct idpf_rxq_group
+ * @idx: For buffer queue, it is used as group id, either 0 or 1. On clean,
+ * buffer queue uses this index to determine which group of refill queues
+ * to clean.
+ * For TX queue, it is used as index to map between TX queue group and
+ * hot path TX pointers stored in vport. Used in both singleq/splitq.
+ * For RX queue, it is used to index to total RX queue across groups and
+ * used for skb reporting.
+ * @tail: Tail offset. Used for both queue models single and split. In splitq
+ * model relevant only for TX queue and RX queue.
+ * @tx_buf: See struct idpf_tx_buf
+ * @rx_buf: Struct with RX buffer related members
+ * @rx_buf.buf: See struct idpf_rx_buf
+ * @rx_buf.hdr_buf_pa: DMA handle
+ * @rx_buf.hdr_buf_va: Virtual address
+ * @pp: Page pool pointer
+ * @skb: Pointer to the skb
+ * @q_type: Queue type (TX, RX, TX completion, RX buffer)
+ * @q_id: Queue id
+ * @desc_count: Number of descriptors
+ * @next_to_use: Next descriptor to use. Relevant in both split & single txq
+ * and bufq.
+ * @next_to_clean: Next descriptor to clean. In split queue model, only
+ * relevant to TX completion queue and RX queue.
+ * @next_to_alloc: RX buffer to allocate at. Used only for RX. In splitq model
+ * only relevant to RX queue.
+ * @flags: See enum idpf_queue_flags_t
+ * @q_stats: See union idpf_queue_stats
+ * @stats_sync: See struct u64_stats_sync
+ * @cleaned_bytes: Splitq only, TXQ only: When a TX completion is received on
+ * the TX completion queue, it can be for any TXQ associated
+ * with that completion queue. This means we can clean up to
+ * N TXQs during a single call to clean the completion queue.
+ * cleaned_bytes|pkts tracks the clean stats per TXQ during
+ * that single call to clean the completion queue. By doing so,
+ * we can update BQL with aggregate cleaned stats for each TXQ
+ * only once at the end of the cleaning routine.
+ * @cleaned_pkts: Number of packets cleaned for the above said case
+ * @rx_hsplit_en: RX headsplit enable
+ * @rx_hbuf_size: Header buffer size
+ * @rx_buf_size: Buffer size
+ * @rx_max_pkt_size: RX max packet size
+ * @rx_buf_stride: RX buffer stride
+ * @rx_buffer_low_watermark: RX buffer low watermark
+ * @rxdids: Supported RX descriptor ids
+ * @q_vector: Backreference to associated vector
+ * @size: Length of descriptor ring in bytes
+ * @dma: Physical address of ring
+ * @desc_ring: Descriptor ring memory
+ * @tx_max_bufs: Max buffers that can be transmitted with scatter-gather
+ * @tx_min_pkt_len: Min supported packet length
+ * @num_completions: Only relevant for TX completion queue. It tracks the
+ * number of completions received to compare against the
+ * number of completions pending, as accumulated by the
+ * TX queues.
+ * @buf_stack: Stack of empty buffers to store buffer info for out of order
+ * buffer completions. See struct idpf_buf_lifo.
+ * @compl_tag_bufid_m: Completion tag buffer id mask
+ * @compl_tag_gen_s: Completion tag generation bit
+ * The format of the completion tag will change based on the TXQ
+ * descriptor ring size so that we can maintain roughly the same level
+ * of "uniqueness" across all descriptor sizes. For example, if the
+ * TXQ descriptor ring size is 64 (the minimum size supported), the
+ * completion tag will be formatted as below:
+ * 15 6 5 0
+ * --------------------------------
+ * | GEN=0-1023 |IDX = 0-63|
+ * --------------------------------
+ *
+ * This gives us 64*1024 = 65536 possible unique values. Similarly, if
+ * the TXQ descriptor ring size is 8160 (the maximum size supported),
+ * the completion tag will be formatted as below:
+ * 15 13 12 0
+ * --------------------------------
+ * |GEN | IDX = 0-8159 |
+ * --------------------------------
+ *
+ * This gives us 8*8160 = 65280 possible unique values.
+ * @compl_tag_cur_gen: Used to keep track of current completion tag generation
+ * @compl_tag_gen_max: To determine when compl_tag_cur_gen should be reset
+ * @sched_buf_hash: Hash table to stores buffers
+ */
+struct idpf_queue {
+ struct device *dev;
+ struct idpf_vport *vport;
+ union {
+ struct idpf_txq_group *txq_grp;
+ struct idpf_rxq_group *rxq_grp;
+ };
+ u16 idx;
+ void __iomem *tail;
+ union {
+ struct idpf_tx_buf *tx_buf;
+ struct {
+ struct idpf_rx_buf *buf;
+ dma_addr_t hdr_buf_pa;
+ void *hdr_buf_va;
+ } rx_buf;
+ };
+ struct page_pool *pp;
+ struct sk_buff *skb;
+ u16 q_type;
+ u32 q_id;
+ u16 desc_count;
+
+ u16 next_to_use;
+ u16 next_to_clean;
+ u16 next_to_alloc;
+ DECLARE_BITMAP(flags, __IDPF_Q_FLAGS_NBITS);
+
+ union idpf_queue_stats q_stats;
+ struct u64_stats_sync stats_sync;
+
+ u32 cleaned_bytes;
+ u16 cleaned_pkts;
+
+ bool rx_hsplit_en;
+ u16 rx_hbuf_size;
+ u16 rx_buf_size;
+ u16 rx_max_pkt_size;
+ u16 rx_buf_stride;
+ u8 rx_buffer_low_watermark;
+ u64 rxdids;
+ struct idpf_q_vector *q_vector;
+ unsigned int size;
+ dma_addr_t dma;
+ void *desc_ring;
+
+ u16 tx_max_bufs;
+ u8 tx_min_pkt_len;
+
+ u32 num_completions;
+
+ struct idpf_buf_lifo buf_stack;
+
+ u16 compl_tag_bufid_m;
+ u16 compl_tag_gen_s;
+
+ u16 compl_tag_cur_gen;
+ u16 compl_tag_gen_max;
+
+ DECLARE_HASHTABLE(sched_buf_hash, 12);
+} ____cacheline_internodealigned_in_smp;
+
+/**
+ * struct idpf_sw_queue
+ * @next_to_clean: Next descriptor to clean
+ * @next_to_alloc: Buffer to allocate at
+ * @flags: See enum idpf_queue_flags_t
+ * @ring: Pointer to the ring
+ * @desc_count: Descriptor count
+ * @dev: Device back pointer for DMA mapping
+ *
+ * Software queues are used in splitq mode to manage buffers between rxq
+ * producer and the bufq consumer. These are required in order to maintain a
+ * lockless buffer management system and are strictly software only constructs.
+ */
+struct idpf_sw_queue {
+ u16 next_to_clean;
+ u16 next_to_alloc;
+ DECLARE_BITMAP(flags, __IDPF_Q_FLAGS_NBITS);
+ u16 *ring;
+ u16 desc_count;
+ struct device *dev;
+} ____cacheline_internodealigned_in_smp;
+
+/**
+ * struct idpf_rxq_set
+ * @rxq: RX queue
+ * @refillq0: Pointer to refill queue 0
+ * @refillq1: Pointer to refill queue 1
+ *
+ * Splitq only. idpf_rxq_set associates an rxq with at an array of refillqs.
+ * Each rxq needs a refillq to return used buffers back to the respective bufq.
+ * Bufqs then clean these refillqs for buffers to give to hardware.
+ */
+struct idpf_rxq_set {
+ struct idpf_queue rxq;
+ struct idpf_sw_queue *refillq0;
+ struct idpf_sw_queue *refillq1;
+};
+
+/**
+ * struct idpf_bufq_set
+ * @bufq: Buffer queue
+ * @num_refillqs: Number of refill queues. This is always equal to num_rxq_sets
+ * in idpf_rxq_group.
+ * @refillqs: Pointer to refill queues array.
+ *
+ * Splitq only. idpf_bufq_set associates a bufq to an array of refillqs.
+ * In this bufq_set, there will be one refillq for each rxq in this rxq_group.
+ * Used buffers received by rxqs will be put on refillqs which bufqs will
+ * clean to return new buffers back to hardware.
+ *
+ * Buffers needed by some number of rxqs associated in this rxq_group are
+ * managed by at most two bufqs (depending on performance configuration).
+ */
+struct idpf_bufq_set {
+ struct idpf_queue bufq;
+ int num_refillqs;
+ struct idpf_sw_queue *refillqs;
+};
+
+/**
+ * struct idpf_rxq_group
+ * @vport: Vport back pointer
+ * @singleq: Struct with single queue related members
+ * @singleq.num_rxq: Number of RX queues associated
+ * @singleq.rxqs: Array of RX queue pointers
+ * @splitq: Struct with split queue related members
+ * @splitq.num_rxq_sets: Number of RX queue sets
+ * @splitq.rxq_sets: Array of RX queue sets
+ * @splitq.bufq_sets: Buffer queue set pointer
+ *
+ * In singleq mode, an rxq_group is simply an array of rxqs. In splitq, a
+ * rxq_group contains all the rxqs, bufqs and refillqs needed to
+ * manage buffers in splitq mode.
+ */
+struct idpf_rxq_group {
+ struct idpf_vport *vport;
+
+ union {
+ struct {
+ u16 num_rxq;
+ struct idpf_queue *rxqs[IDPF_LARGE_MAX_Q];
+ } singleq;
+ struct {
+ u16 num_rxq_sets;
+ struct idpf_rxq_set *rxq_sets[IDPF_LARGE_MAX_Q];
+ struct idpf_bufq_set *bufq_sets;
+ } splitq;
+ };
+};
+
+/**
+ * struct idpf_txq_group
+ * @vport: Vport back pointer
+ * @num_txq: Number of TX queues associated
+ * @txqs: Array of TX queue pointers
+ * @complq: Associated completion queue pointer, split queue only
+ * @num_completions_pending: Total number of completions pending for the
+ * completion queue, acculumated for all TX queues
+ * associated with that completion queue.
+ *
+ * Between singleq and splitq, a txq_group is largely the same except for the
+ * complq. In splitq a single complq is responsible for handling completions
+ * for some number of txqs associated in this txq_group.
+ */
+struct idpf_txq_group {
+ struct idpf_vport *vport;
+
+ u16 num_txq;
+ struct idpf_queue *txqs[IDPF_LARGE_MAX_Q];
+
+ struct idpf_queue *complq;
+
+ u32 num_completions_pending;
+};
+
+/**
+ * idpf_size_to_txd_count - Get number of descriptors needed for large Tx frag
+ * @size: transmit request size in bytes
+ *
+ * In the case where a large frag (>= 16K) needs to be split across multiple
+ * descriptors, we need to assume that we can have no more than 12K of data
+ * per descriptor due to hardware alignment restrictions (4K alignment).
+ */
+static inline u32 idpf_size_to_txd_count(unsigned int size)
+{
+ return DIV_ROUND_UP(size, IDPF_TX_MAX_DESC_DATA_ALIGNED);
+}
+
+/**
+ * idpf_tx_singleq_build_ctob - populate command tag offset and size
+ * @td_cmd: Command to be filled in desc
+ * @td_offset: Offset to be filled in desc
+ * @size: Size of the buffer
+ * @td_tag: td tag to be filled
+ *
+ * Returns the 64 bit value populated with the input parameters
+ */
+static inline __le64 idpf_tx_singleq_build_ctob(u64 td_cmd, u64 td_offset,
+ unsigned int size, u64 td_tag)
+{
+ return cpu_to_le64(IDPF_TX_DESC_DTYPE_DATA |
+ (td_cmd << IDPF_TXD_QW1_CMD_S) |
+ (td_offset << IDPF_TXD_QW1_OFFSET_S) |
+ ((u64)size << IDPF_TXD_QW1_TX_BUF_SZ_S) |
+ (td_tag << IDPF_TXD_QW1_L2TAG1_S));
+}
+
+void idpf_tx_splitq_build_ctb(union idpf_tx_flex_desc *desc,
+ struct idpf_tx_splitq_params *params,
+ u16 td_cmd, u16 size);
+void idpf_tx_splitq_build_flow_desc(union idpf_tx_flex_desc *desc,
+ struct idpf_tx_splitq_params *params,
+ u16 td_cmd, u16 size);
+/**
+ * idpf_tx_splitq_build_desc - determine which type of data descriptor to build
+ * @desc: descriptor to populate
+ * @params: pointer to tx params struct
+ * @td_cmd: command to be filled in desc
+ * @size: size of buffer
+ */
+static inline void idpf_tx_splitq_build_desc(union idpf_tx_flex_desc *desc,
+ struct idpf_tx_splitq_params *params,
+ u16 td_cmd, u16 size)
+{
+ if (params->dtype == IDPF_TX_DESC_DTYPE_FLEX_L2TAG1_L2TAG2)
+ idpf_tx_splitq_build_ctb(desc, params, td_cmd, size);
+ else
+ idpf_tx_splitq_build_flow_desc(desc, params, td_cmd, size);
+}
+
+/**
+ * idpf_alloc_page - Allocate a new RX buffer from the page pool
+ * @pool: page_pool to allocate from
+ * @buf: metadata struct to populate with page info
+ * @buf_size: 2K or 4K
+ *
+ * Returns &dma_addr_t to be passed to HW for Rx, %DMA_MAPPING_ERROR otherwise.
+ */
+static inline dma_addr_t idpf_alloc_page(struct page_pool *pool,
+ struct idpf_rx_buf *buf,
+ unsigned int buf_size)
+{
+ if (buf_size == IDPF_RX_BUF_2048)
+ buf->page = page_pool_dev_alloc_frag(pool, &buf->page_offset,
+ buf_size);
+ else
+ buf->page = page_pool_dev_alloc_pages(pool);
+
+ if (!buf->page)
+ return DMA_MAPPING_ERROR;
+
+ buf->truesize = buf_size;
+
+ return page_pool_get_dma_addr(buf->page) + buf->page_offset +
+ pool->p.offset;
+}
+
+/**
+ * idpf_rx_put_page - Return RX buffer page to pool
+ * @rx_buf: RX buffer metadata struct
+ */
+static inline void idpf_rx_put_page(struct idpf_rx_buf *rx_buf)
+{
+ page_pool_put_page(rx_buf->page->pp, rx_buf->page,
+ rx_buf->truesize, true);
+ rx_buf->page = NULL;
+}
+
+/**
+ * idpf_rx_sync_for_cpu - Synchronize DMA buffer
+ * @rx_buf: RX buffer metadata struct
+ * @len: frame length from descriptor
+ */
+static inline void idpf_rx_sync_for_cpu(struct idpf_rx_buf *rx_buf, u32 len)
+{
+ struct page *page = rx_buf->page;
+ struct page_pool *pp = page->pp;
+
+ dma_sync_single_range_for_cpu(pp->p.dev,
+ page_pool_get_dma_addr(page),
+ rx_buf->page_offset + pp->p.offset, len,
+ page_pool_get_dma_dir(pp));
+}
+
+int idpf_vport_singleq_napi_poll(struct napi_struct *napi, int budget);
+void idpf_vport_init_num_qs(struct idpf_vport *vport,
+ struct virtchnl2_create_vport *vport_msg);
+void idpf_vport_calc_num_q_desc(struct idpf_vport *vport);
+int idpf_vport_calc_total_qs(struct idpf_adapter *adapter, u16 vport_index,
+ struct virtchnl2_create_vport *vport_msg,
+ struct idpf_vport_max_q *max_q);
+void idpf_vport_calc_num_q_groups(struct idpf_vport *vport);
+int idpf_vport_queues_alloc(struct idpf_vport *vport);
+void idpf_vport_queues_rel(struct idpf_vport *vport);
+void idpf_vport_intr_rel(struct idpf_vport *vport);
+int idpf_vport_intr_alloc(struct idpf_vport *vport);
+void idpf_vport_intr_update_itr_ena_irq(struct idpf_q_vector *q_vector);
+void idpf_vport_intr_deinit(struct idpf_vport *vport);
+int idpf_vport_intr_init(struct idpf_vport *vport);
+enum pkt_hash_types idpf_ptype_to_htype(const struct idpf_rx_ptype_decoded *decoded);
+int idpf_config_rss(struct idpf_vport *vport);
+int idpf_init_rss(struct idpf_vport *vport);
+void idpf_deinit_rss(struct idpf_vport *vport);
+int idpf_rx_bufs_init_all(struct idpf_vport *vport);
+void idpf_rx_add_frag(struct idpf_rx_buf *rx_buf, struct sk_buff *skb,
+ unsigned int size);
+struct sk_buff *idpf_rx_construct_skb(struct idpf_queue *rxq,
+ struct idpf_rx_buf *rx_buf,
+ unsigned int size);
+bool idpf_init_rx_buf_hw_alloc(struct idpf_queue *rxq, struct idpf_rx_buf *buf);
+void idpf_rx_buf_hw_update(struct idpf_queue *rxq, u32 val);
+void idpf_tx_buf_hw_update(struct idpf_queue *tx_q, u32 val,
+ bool xmit_more);
+unsigned int idpf_size_to_txd_count(unsigned int size);
+netdev_tx_t idpf_tx_drop_skb(struct idpf_queue *tx_q, struct sk_buff *skb);
+void idpf_tx_dma_map_error(struct idpf_queue *txq, struct sk_buff *skb,
+ struct idpf_tx_buf *first, u16 ring_idx);
+unsigned int idpf_tx_desc_count_required(struct idpf_queue *txq,
+ struct sk_buff *skb);
+bool idpf_chk_linearize(struct sk_buff *skb, unsigned int max_bufs,
+ unsigned int count);
+int idpf_tx_maybe_stop_common(struct idpf_queue *tx_q, unsigned int size);
+void idpf_tx_timeout(struct net_device *netdev, unsigned int txqueue);
+netdev_tx_t idpf_tx_splitq_start(struct sk_buff *skb,
+ struct net_device *netdev);
+netdev_tx_t idpf_tx_singleq_start(struct sk_buff *skb,
+ struct net_device *netdev);
+bool idpf_rx_singleq_buf_hw_alloc_all(struct idpf_queue *rxq,
+ u16 cleaned_count);
+int idpf_tso(struct sk_buff *skb, struct idpf_tx_offload_params *off);
+
+#endif /* !_IDPF_TXRX_H_ */
diff --git a/drivers/net/ethernet/intel/idpf/idpf_vf_dev.c b/drivers/net/ethernet/intel/idpf/idpf_vf_dev.c
new file mode 100644
index 0000000..8ade4e3a
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_vf_dev.c
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf.h"
+#include "idpf_lan_vf_regs.h"
+
+#define IDPF_VF_ITR_IDX_SPACING 0x40
+
+/**
+ * idpf_vf_ctlq_reg_init - initialize default mailbox registers
+ * @cq: pointer to the array of create control queues
+ */
+static void idpf_vf_ctlq_reg_init(struct idpf_ctlq_create_info *cq)
+{
+ int i;
+
+ for (i = 0; i < IDPF_NUM_DFLT_MBX_Q; i++) {
+ struct idpf_ctlq_create_info *ccq = cq + i;
+
+ switch (ccq->type) {
+ case IDPF_CTLQ_TYPE_MAILBOX_TX:
+ /* set head and tail registers in our local struct */
+ ccq->reg.head = VF_ATQH;
+ ccq->reg.tail = VF_ATQT;
+ ccq->reg.len = VF_ATQLEN;
+ ccq->reg.bah = VF_ATQBAH;
+ ccq->reg.bal = VF_ATQBAL;
+ ccq->reg.len_mask = VF_ATQLEN_ATQLEN_M;
+ ccq->reg.len_ena_mask = VF_ATQLEN_ATQENABLE_M;
+ ccq->reg.head_mask = VF_ATQH_ATQH_M;
+ break;
+ case IDPF_CTLQ_TYPE_MAILBOX_RX:
+ /* set head and tail registers in our local struct */
+ ccq->reg.head = VF_ARQH;
+ ccq->reg.tail = VF_ARQT;
+ ccq->reg.len = VF_ARQLEN;
+ ccq->reg.bah = VF_ARQBAH;
+ ccq->reg.bal = VF_ARQBAL;
+ ccq->reg.len_mask = VF_ARQLEN_ARQLEN_M;
+ ccq->reg.len_ena_mask = VF_ARQLEN_ARQENABLE_M;
+ ccq->reg.head_mask = VF_ARQH_ARQH_M;
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+/**
+ * idpf_vf_mb_intr_reg_init - Initialize the mailbox register
+ * @adapter: adapter structure
+ */
+static void idpf_vf_mb_intr_reg_init(struct idpf_adapter *adapter)
+{
+ struct idpf_intr_reg *intr = &adapter->mb_vector.intr_reg;
+ u32 dyn_ctl = le32_to_cpu(adapter->caps.mailbox_dyn_ctl);
+
+ intr->dyn_ctl = idpf_get_reg_addr(adapter, dyn_ctl);
+ intr->dyn_ctl_intena_m = VF_INT_DYN_CTL0_INTENA_M;
+ intr->dyn_ctl_itridx_m = VF_INT_DYN_CTL0_ITR_INDX_M;
+ intr->icr_ena = idpf_get_reg_addr(adapter, VF_INT_ICR0_ENA1);
+ intr->icr_ena_ctlq_m = VF_INT_ICR0_ENA1_ADMINQ_M;
+}
+
+/**
+ * idpf_vf_intr_reg_init - Initialize interrupt registers
+ * @vport: virtual port structure
+ */
+static int idpf_vf_intr_reg_init(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ int num_vecs = vport->num_q_vectors;
+ struct idpf_vec_regs *reg_vals;
+ int num_regs, i, err = 0;
+ u32 rx_itr, tx_itr;
+ u16 total_vecs;
+
+ total_vecs = idpf_get_reserved_vecs(vport->adapter);
+ reg_vals = kcalloc(total_vecs, sizeof(struct idpf_vec_regs),
+ GFP_KERNEL);
+ if (!reg_vals)
+ return -ENOMEM;
+
+ num_regs = idpf_get_reg_intr_vecs(vport, reg_vals);
+ if (num_regs < num_vecs) {
+ err = -EINVAL;
+ goto free_reg_vals;
+ }
+
+ for (i = 0; i < num_vecs; i++) {
+ struct idpf_q_vector *q_vector = &vport->q_vectors[i];
+ u16 vec_id = vport->q_vector_idxs[i] - IDPF_MBX_Q_VEC;
+ struct idpf_intr_reg *intr = &q_vector->intr_reg;
+ u32 spacing;
+
+ intr->dyn_ctl = idpf_get_reg_addr(adapter,
+ reg_vals[vec_id].dyn_ctl_reg);
+ intr->dyn_ctl_intena_m = VF_INT_DYN_CTLN_INTENA_M;
+ intr->dyn_ctl_itridx_s = VF_INT_DYN_CTLN_ITR_INDX_S;
+
+ spacing = IDPF_ITR_IDX_SPACING(reg_vals[vec_id].itrn_index_spacing,
+ IDPF_VF_ITR_IDX_SPACING);
+ rx_itr = VF_INT_ITRN_ADDR(VIRTCHNL2_ITR_IDX_0,
+ reg_vals[vec_id].itrn_reg,
+ spacing);
+ tx_itr = VF_INT_ITRN_ADDR(VIRTCHNL2_ITR_IDX_1,
+ reg_vals[vec_id].itrn_reg,
+ spacing);
+ intr->rx_itr = idpf_get_reg_addr(adapter, rx_itr);
+ intr->tx_itr = idpf_get_reg_addr(adapter, tx_itr);
+ }
+
+free_reg_vals:
+ kfree(reg_vals);
+
+ return err;
+}
+
+/**
+ * idpf_vf_reset_reg_init - Initialize reset registers
+ * @adapter: Driver specific private structure
+ */
+static void idpf_vf_reset_reg_init(struct idpf_adapter *adapter)
+{
+ adapter->reset_reg.rstat = idpf_get_reg_addr(adapter, VFGEN_RSTAT);
+ adapter->reset_reg.rstat_m = VFGEN_RSTAT_VFR_STATE_M;
+}
+
+/**
+ * idpf_vf_trigger_reset - trigger reset
+ * @adapter: Driver specific private structure
+ * @trig_cause: Reason to trigger a reset
+ */
+static void idpf_vf_trigger_reset(struct idpf_adapter *adapter,
+ enum idpf_flags trig_cause)
+{
+ /* Do not send VIRTCHNL2_OP_RESET_VF message on driver unload */
+ if (trig_cause == IDPF_HR_FUNC_RESET &&
+ !test_bit(IDPF_REMOVE_IN_PROG, adapter->flags))
+ idpf_send_mb_msg(adapter, VIRTCHNL2_OP_RESET_VF, 0, NULL);
+}
+
+/**
+ * idpf_vf_reg_ops_init - Initialize register API function pointers
+ * @adapter: Driver specific private structure
+ */
+static void idpf_vf_reg_ops_init(struct idpf_adapter *adapter)
+{
+ adapter->dev_ops.reg_ops.ctlq_reg_init = idpf_vf_ctlq_reg_init;
+ adapter->dev_ops.reg_ops.intr_reg_init = idpf_vf_intr_reg_init;
+ adapter->dev_ops.reg_ops.mb_intr_reg_init = idpf_vf_mb_intr_reg_init;
+ adapter->dev_ops.reg_ops.reset_reg_init = idpf_vf_reset_reg_init;
+ adapter->dev_ops.reg_ops.trigger_reset = idpf_vf_trigger_reset;
+}
+
+/**
+ * idpf_vf_dev_ops_init - Initialize device API function pointers
+ * @adapter: Driver specific private structure
+ */
+void idpf_vf_dev_ops_init(struct idpf_adapter *adapter)
+{
+ idpf_vf_reg_ops_init(adapter);
+}
diff --git a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
new file mode 100644
index 0000000..2c1b051f
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
@@ -0,0 +1,3798 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf.h"
+
+/**
+ * idpf_recv_event_msg - Receive virtchnl event message
+ * @vport: virtual port structure
+ * @ctlq_msg: message to copy from
+ *
+ * Receive virtchnl event message
+ */
+static void idpf_recv_event_msg(struct idpf_vport *vport,
+ struct idpf_ctlq_msg *ctlq_msg)
+{
+ struct idpf_netdev_priv *np = netdev_priv(vport->netdev);
+ struct virtchnl2_event *v2e;
+ bool link_status;
+ u32 event;
+
+ v2e = (struct virtchnl2_event *)ctlq_msg->ctx.indirect.payload->va;
+ event = le32_to_cpu(v2e->event);
+
+ switch (event) {
+ case VIRTCHNL2_EVENT_LINK_CHANGE:
+ vport->link_speed_mbps = le32_to_cpu(v2e->link_speed);
+ link_status = v2e->link_status;
+
+ if (vport->link_up == link_status)
+ break;
+
+ vport->link_up = link_status;
+ if (np->state == __IDPF_VPORT_UP) {
+ if (vport->link_up) {
+ netif_carrier_on(vport->netdev);
+ netif_tx_start_all_queues(vport->netdev);
+ } else {
+ netif_tx_stop_all_queues(vport->netdev);
+ netif_carrier_off(vport->netdev);
+ }
+ }
+ break;
+ default:
+ dev_err(&vport->adapter->pdev->dev,
+ "Unknown event %d from PF\n", event);
+ break;
+ }
+}
+
+/**
+ * idpf_mb_clean - Reclaim the send mailbox queue entries
+ * @adapter: Driver specific private structure
+ *
+ * Reclaim the send mailbox queue entries to be used to send further messages
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_mb_clean(struct idpf_adapter *adapter)
+{
+ u16 i, num_q_msg = IDPF_DFLT_MBX_Q_LEN;
+ struct idpf_ctlq_msg **q_msg;
+ struct idpf_dma_mem *dma_mem;
+ int err;
+
+ q_msg = kcalloc(num_q_msg, sizeof(struct idpf_ctlq_msg *), GFP_ATOMIC);
+ if (!q_msg)
+ return -ENOMEM;
+
+ err = idpf_ctlq_clean_sq(adapter->hw.asq, &num_q_msg, q_msg);
+ if (err)
+ goto err_kfree;
+
+ for (i = 0; i < num_q_msg; i++) {
+ if (!q_msg[i])
+ continue;
+ dma_mem = q_msg[i]->ctx.indirect.payload;
+ if (dma_mem)
+ dma_free_coherent(&adapter->pdev->dev, dma_mem->size,
+ dma_mem->va, dma_mem->pa);
+ kfree(q_msg[i]);
+ kfree(dma_mem);
+ }
+
+err_kfree:
+ kfree(q_msg);
+
+ return err;
+}
+
+/**
+ * idpf_send_mb_msg - Send message over mailbox
+ * @adapter: Driver specific private structure
+ * @op: virtchnl opcode
+ * @msg_size: size of the payload
+ * @msg: pointer to buffer holding the payload
+ *
+ * Will prepare the control queue message and initiates the send api
+ *
+ * Returns 0 on success, negative on failure
+ */
+int idpf_send_mb_msg(struct idpf_adapter *adapter, u32 op,
+ u16 msg_size, u8 *msg)
+{
+ struct idpf_ctlq_msg *ctlq_msg;
+ struct idpf_dma_mem *dma_mem;
+ int err;
+
+ /* If we are here and a reset is detected nothing much can be
+ * done. This thread should silently abort and expected to
+ * be corrected with a new run either by user or driver
+ * flows after reset
+ */
+ if (idpf_is_reset_detected(adapter))
+ return 0;
+
+ err = idpf_mb_clean(adapter);
+ if (err)
+ return err;
+
+ ctlq_msg = kzalloc(sizeof(*ctlq_msg), GFP_ATOMIC);
+ if (!ctlq_msg)
+ return -ENOMEM;
+
+ dma_mem = kzalloc(sizeof(*dma_mem), GFP_ATOMIC);
+ if (!dma_mem) {
+ err = -ENOMEM;
+ goto dma_mem_error;
+ }
+
+ ctlq_msg->opcode = idpf_mbq_opc_send_msg_to_cp;
+ ctlq_msg->func_id = 0;
+ ctlq_msg->data_len = msg_size;
+ ctlq_msg->cookie.mbx.chnl_opcode = op;
+ ctlq_msg->cookie.mbx.chnl_retval = 0;
+ dma_mem->size = IDPF_CTLQ_MAX_BUF_LEN;
+ dma_mem->va = dma_alloc_coherent(&adapter->pdev->dev, dma_mem->size,
+ &dma_mem->pa, GFP_ATOMIC);
+ if (!dma_mem->va) {
+ err = -ENOMEM;
+ goto dma_alloc_error;
+ }
+ memcpy(dma_mem->va, msg, msg_size);
+ ctlq_msg->ctx.indirect.payload = dma_mem;
+
+ err = idpf_ctlq_send(&adapter->hw, adapter->hw.asq, 1, ctlq_msg);
+ if (err)
+ goto send_error;
+
+ return 0;
+
+send_error:
+ dma_free_coherent(&adapter->pdev->dev, dma_mem->size, dma_mem->va,
+ dma_mem->pa);
+dma_alloc_error:
+ kfree(dma_mem);
+dma_mem_error:
+ kfree(ctlq_msg);
+
+ return err;
+}
+
+/**
+ * idpf_find_vport - Find vport pointer from control queue message
+ * @adapter: driver specific private structure
+ * @vport: address of vport pointer to copy the vport from adapters vport list
+ * @ctlq_msg: control queue message
+ *
+ * Return 0 on success, error value on failure. Also this function does check
+ * for the opcodes which expect to receive payload and return error value if
+ * it is not the case.
+ */
+static int idpf_find_vport(struct idpf_adapter *adapter,
+ struct idpf_vport **vport,
+ struct idpf_ctlq_msg *ctlq_msg)
+{
+ bool no_op = false, vid_found = false;
+ int i, err = 0;
+ char *vc_msg;
+ u32 v_id;
+
+ vc_msg = kcalloc(IDPF_CTLQ_MAX_BUF_LEN, sizeof(char), GFP_KERNEL);
+ if (!vc_msg)
+ return -ENOMEM;
+
+ if (ctlq_msg->data_len) {
+ size_t payload_size = ctlq_msg->ctx.indirect.payload->size;
+
+ if (!payload_size) {
+ dev_err(&adapter->pdev->dev, "Failed to receive payload buffer\n");
+ kfree(vc_msg);
+
+ return -EINVAL;
+ }
+
+ memcpy(vc_msg, ctlq_msg->ctx.indirect.payload->va,
+ min_t(size_t, payload_size, IDPF_CTLQ_MAX_BUF_LEN));
+ }
+
+ switch (ctlq_msg->cookie.mbx.chnl_opcode) {
+ case VIRTCHNL2_OP_VERSION:
+ case VIRTCHNL2_OP_GET_CAPS:
+ case VIRTCHNL2_OP_CREATE_VPORT:
+ case VIRTCHNL2_OP_SET_SRIOV_VFS:
+ case VIRTCHNL2_OP_ALLOC_VECTORS:
+ case VIRTCHNL2_OP_DEALLOC_VECTORS:
+ case VIRTCHNL2_OP_GET_PTYPE_INFO:
+ goto free_vc_msg;
+ case VIRTCHNL2_OP_ENABLE_VPORT:
+ case VIRTCHNL2_OP_DISABLE_VPORT:
+ case VIRTCHNL2_OP_DESTROY_VPORT:
+ v_id = le32_to_cpu(((struct virtchnl2_vport *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_CONFIG_TX_QUEUES:
+ v_id = le32_to_cpu(((struct virtchnl2_config_tx_queues *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_CONFIG_RX_QUEUES:
+ v_id = le32_to_cpu(((struct virtchnl2_config_rx_queues *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_ENABLE_QUEUES:
+ case VIRTCHNL2_OP_DISABLE_QUEUES:
+ case VIRTCHNL2_OP_DEL_QUEUES:
+ v_id = le32_to_cpu(((struct virtchnl2_del_ena_dis_queues *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_ADD_QUEUES:
+ v_id = le32_to_cpu(((struct virtchnl2_add_queues *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_MAP_QUEUE_VECTOR:
+ case VIRTCHNL2_OP_UNMAP_QUEUE_VECTOR:
+ v_id = le32_to_cpu(((struct virtchnl2_queue_vector_maps *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_GET_STATS:
+ v_id = le32_to_cpu(((struct virtchnl2_vport_stats *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_GET_RSS_LUT:
+ case VIRTCHNL2_OP_SET_RSS_LUT:
+ v_id = le32_to_cpu(((struct virtchnl2_rss_lut *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_GET_RSS_KEY:
+ case VIRTCHNL2_OP_SET_RSS_KEY:
+ v_id = le32_to_cpu(((struct virtchnl2_rss_key *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_EVENT:
+ v_id = le32_to_cpu(((struct virtchnl2_event *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_LOOPBACK:
+ v_id = le32_to_cpu(((struct virtchnl2_loopback *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_CONFIG_PROMISCUOUS_MODE:
+ v_id = le32_to_cpu(((struct virtchnl2_promisc_info *)vc_msg)->vport_id);
+ break;
+ case VIRTCHNL2_OP_ADD_MAC_ADDR:
+ case VIRTCHNL2_OP_DEL_MAC_ADDR:
+ v_id = le32_to_cpu(((struct virtchnl2_mac_addr_list *)vc_msg)->vport_id);
+ break;
+ default:
+ no_op = true;
+ break;
+ }
+
+ if (no_op)
+ goto free_vc_msg;
+
+ for (i = 0; i < idpf_get_max_vports(adapter); i++) {
+ if (adapter->vport_ids[i] == v_id) {
+ vid_found = true;
+ break;
+ }
+ }
+
+ if (vid_found)
+ *vport = adapter->vports[i];
+ else
+ err = -EINVAL;
+
+free_vc_msg:
+ kfree(vc_msg);
+
+ return err;
+}
+
+/**
+ * idpf_copy_data_to_vc_buf - Copy the virtchnl response data into the buffer.
+ * @adapter: driver specific private structure
+ * @vport: virtual port structure
+ * @ctlq_msg: msg to copy from
+ * @err_enum: err bit to set on error
+ *
+ * Copies the payload from ctlq_msg into virtchnl buffer. Returns 0 on success,
+ * negative on failure.
+ */
+static int idpf_copy_data_to_vc_buf(struct idpf_adapter *adapter,
+ struct idpf_vport *vport,
+ struct idpf_ctlq_msg *ctlq_msg,
+ enum idpf_vport_vc_state err_enum)
+{
+ if (ctlq_msg->cookie.mbx.chnl_retval) {
+ if (vport)
+ set_bit(err_enum, vport->vc_state);
+ else
+ set_bit(err_enum, adapter->vc_state);
+
+ return -EINVAL;
+ }
+
+ if (vport)
+ memcpy(vport->vc_msg, ctlq_msg->ctx.indirect.payload->va,
+ min_t(int, ctlq_msg->ctx.indirect.payload->size,
+ IDPF_CTLQ_MAX_BUF_LEN));
+ else
+ memcpy(adapter->vc_msg, ctlq_msg->ctx.indirect.payload->va,
+ min_t(int, ctlq_msg->ctx.indirect.payload->size,
+ IDPF_CTLQ_MAX_BUF_LEN));
+
+ return 0;
+}
+
+/**
+ * idpf_recv_vchnl_op - helper function with common logic when handling the
+ * reception of VIRTCHNL OPs.
+ * @adapter: driver specific private structure
+ * @vport: virtual port structure
+ * @ctlq_msg: msg to copy from
+ * @state: state bit used on timeout check
+ * @err_state: err bit to set on error
+ */
+static void idpf_recv_vchnl_op(struct idpf_adapter *adapter,
+ struct idpf_vport *vport,
+ struct idpf_ctlq_msg *ctlq_msg,
+ enum idpf_vport_vc_state state,
+ enum idpf_vport_vc_state err_state)
+{
+ wait_queue_head_t *vchnl_wq;
+ int err;
+
+ if (vport)
+ vchnl_wq = &vport->vchnl_wq;
+ else
+ vchnl_wq = &adapter->vchnl_wq;
+
+ err = idpf_copy_data_to_vc_buf(adapter, vport, ctlq_msg, err_state);
+ if (wq_has_sleeper(vchnl_wq)) {
+ if (vport)
+ set_bit(state, vport->vc_state);
+ else
+ set_bit(state, adapter->vc_state);
+
+ wake_up(vchnl_wq);
+ } else {
+ if (!err) {
+ dev_warn(&adapter->pdev->dev, "opcode %d received without waiting thread\n",
+ ctlq_msg->cookie.mbx.chnl_opcode);
+ } else {
+ /* Clear the errors since there is no sleeper to pass
+ * them on
+ */
+ if (vport)
+ clear_bit(err_state, vport->vc_state);
+ else
+ clear_bit(err_state, adapter->vc_state);
+ }
+ }
+}
+
+/**
+ * idpf_recv_mb_msg - Receive message over mailbox
+ * @adapter: Driver specific private structure
+ * @op: virtchannel operation code
+ * @msg: Received message holding buffer
+ * @msg_size: message size
+ *
+ * Will receive control queue message and posts the receive buffer. Returns 0
+ * on success and negative on failure.
+ */
+int idpf_recv_mb_msg(struct idpf_adapter *adapter, u32 op,
+ void *msg, int msg_size)
+{
+ struct idpf_vport *vport = NULL;
+ struct idpf_ctlq_msg ctlq_msg;
+ struct idpf_dma_mem *dma_mem;
+ bool work_done = false;
+ int num_retry = 2000;
+ u16 num_q_msg;
+ int err;
+
+ while (1) {
+ struct idpf_vport_config *vport_config;
+ int payload_size = 0;
+
+ /* Try to get one message */
+ num_q_msg = 1;
+ dma_mem = NULL;
+ err = idpf_ctlq_recv(adapter->hw.arq, &num_q_msg, &ctlq_msg);
+ /* If no message then decide if we have to retry based on
+ * opcode
+ */
+ if (err || !num_q_msg) {
+ /* Increasing num_retry to consider the delayed
+ * responses because of large number of VF's mailbox
+ * messages. If the mailbox message is received from
+ * the other side, we come out of the sleep cycle
+ * immediately else we wait for more time.
+ */
+ if (!op || !num_retry--)
+ break;
+ if (test_bit(IDPF_REMOVE_IN_PROG, adapter->flags)) {
+ err = -EIO;
+ break;
+ }
+ msleep(20);
+ continue;
+ }
+
+ /* If we are here a message is received. Check if we are looking
+ * for a specific message based on opcode. If it is different
+ * ignore and post buffers
+ */
+ if (op && ctlq_msg.cookie.mbx.chnl_opcode != op)
+ goto post_buffs;
+
+ err = idpf_find_vport(adapter, &vport, &ctlq_msg);
+ if (err)
+ goto post_buffs;
+
+ if (ctlq_msg.data_len)
+ payload_size = ctlq_msg.ctx.indirect.payload->size;
+
+ /* All conditions are met. Either a message requested is
+ * received or we received a message to be processed
+ */
+ switch (ctlq_msg.cookie.mbx.chnl_opcode) {
+ case VIRTCHNL2_OP_VERSION:
+ case VIRTCHNL2_OP_GET_CAPS:
+ if (ctlq_msg.cookie.mbx.chnl_retval) {
+ dev_err(&adapter->pdev->dev, "Failure initializing, vc op: %u retval: %u\n",
+ ctlq_msg.cookie.mbx.chnl_opcode,
+ ctlq_msg.cookie.mbx.chnl_retval);
+ err = -EBADMSG;
+ } else if (msg) {
+ memcpy(msg, ctlq_msg.ctx.indirect.payload->va,
+ min_t(int, payload_size, msg_size));
+ }
+ work_done = true;
+ break;
+ case VIRTCHNL2_OP_CREATE_VPORT:
+ idpf_recv_vchnl_op(adapter, NULL, &ctlq_msg,
+ IDPF_VC_CREATE_VPORT,
+ IDPF_VC_CREATE_VPORT_ERR);
+ break;
+ case VIRTCHNL2_OP_ENABLE_VPORT:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_ENA_VPORT,
+ IDPF_VC_ENA_VPORT_ERR);
+ break;
+ case VIRTCHNL2_OP_DISABLE_VPORT:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_DIS_VPORT,
+ IDPF_VC_DIS_VPORT_ERR);
+ break;
+ case VIRTCHNL2_OP_DESTROY_VPORT:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_DESTROY_VPORT,
+ IDPF_VC_DESTROY_VPORT_ERR);
+ break;
+ case VIRTCHNL2_OP_CONFIG_TX_QUEUES:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_CONFIG_TXQ,
+ IDPF_VC_CONFIG_TXQ_ERR);
+ break;
+ case VIRTCHNL2_OP_CONFIG_RX_QUEUES:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_CONFIG_RXQ,
+ IDPF_VC_CONFIG_RXQ_ERR);
+ break;
+ case VIRTCHNL2_OP_ENABLE_QUEUES:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_ENA_QUEUES,
+ IDPF_VC_ENA_QUEUES_ERR);
+ break;
+ case VIRTCHNL2_OP_DISABLE_QUEUES:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_DIS_QUEUES,
+ IDPF_VC_DIS_QUEUES_ERR);
+ break;
+ case VIRTCHNL2_OP_ADD_QUEUES:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_ADD_QUEUES,
+ IDPF_VC_ADD_QUEUES_ERR);
+ break;
+ case VIRTCHNL2_OP_DEL_QUEUES:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_DEL_QUEUES,
+ IDPF_VC_DEL_QUEUES_ERR);
+ break;
+ case VIRTCHNL2_OP_MAP_QUEUE_VECTOR:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_MAP_IRQ,
+ IDPF_VC_MAP_IRQ_ERR);
+ break;
+ case VIRTCHNL2_OP_UNMAP_QUEUE_VECTOR:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_UNMAP_IRQ,
+ IDPF_VC_UNMAP_IRQ_ERR);
+ break;
+ case VIRTCHNL2_OP_GET_STATS:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_GET_STATS,
+ IDPF_VC_GET_STATS_ERR);
+ break;
+ case VIRTCHNL2_OP_GET_RSS_LUT:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_GET_RSS_LUT,
+ IDPF_VC_GET_RSS_LUT_ERR);
+ break;
+ case VIRTCHNL2_OP_SET_RSS_LUT:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_SET_RSS_LUT,
+ IDPF_VC_SET_RSS_LUT_ERR);
+ break;
+ case VIRTCHNL2_OP_GET_RSS_KEY:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_GET_RSS_KEY,
+ IDPF_VC_GET_RSS_KEY_ERR);
+ break;
+ case VIRTCHNL2_OP_SET_RSS_KEY:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_SET_RSS_KEY,
+ IDPF_VC_SET_RSS_KEY_ERR);
+ break;
+ case VIRTCHNL2_OP_SET_SRIOV_VFS:
+ idpf_recv_vchnl_op(adapter, NULL, &ctlq_msg,
+ IDPF_VC_SET_SRIOV_VFS,
+ IDPF_VC_SET_SRIOV_VFS_ERR);
+ break;
+ case VIRTCHNL2_OP_ALLOC_VECTORS:
+ idpf_recv_vchnl_op(adapter, NULL, &ctlq_msg,
+ IDPF_VC_ALLOC_VECTORS,
+ IDPF_VC_ALLOC_VECTORS_ERR);
+ break;
+ case VIRTCHNL2_OP_DEALLOC_VECTORS:
+ idpf_recv_vchnl_op(adapter, NULL, &ctlq_msg,
+ IDPF_VC_DEALLOC_VECTORS,
+ IDPF_VC_DEALLOC_VECTORS_ERR);
+ break;
+ case VIRTCHNL2_OP_GET_PTYPE_INFO:
+ idpf_recv_vchnl_op(adapter, NULL, &ctlq_msg,
+ IDPF_VC_GET_PTYPE_INFO,
+ IDPF_VC_GET_PTYPE_INFO_ERR);
+ break;
+ case VIRTCHNL2_OP_LOOPBACK:
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_LOOPBACK_STATE,
+ IDPF_VC_LOOPBACK_STATE_ERR);
+ break;
+ case VIRTCHNL2_OP_CONFIG_PROMISCUOUS_MODE:
+ /* This message can only be sent asynchronously. As
+ * such we'll have lost the context in which it was
+ * called and thus can only really report if it looks
+ * like an error occurred. Don't bother setting ERR bit
+ * or waking chnl_wq since no work queue will be waiting
+ * to read the message.
+ */
+ if (ctlq_msg.cookie.mbx.chnl_retval) {
+ dev_err(&adapter->pdev->dev, "Failed to set promiscuous mode: %d\n",
+ ctlq_msg.cookie.mbx.chnl_retval);
+ }
+ break;
+ case VIRTCHNL2_OP_ADD_MAC_ADDR:
+ vport_config = adapter->vport_config[vport->idx];
+ if (test_and_clear_bit(IDPF_VPORT_ADD_MAC_REQ,
+ vport_config->flags)) {
+ /* Message was sent asynchronously. We don't
+ * normally print errors here, instead
+ * prefer to handle errors in the function
+ * calling wait_for_event. However, if
+ * asynchronous, the context in which the
+ * message was sent is lost. We can't really do
+ * anything about at it this point, but we
+ * should at a minimum indicate that it looks
+ * like something went wrong. Also don't bother
+ * setting ERR bit or waking vchnl_wq since no
+ * one will be waiting to read the async
+ * message.
+ */
+ if (ctlq_msg.cookie.mbx.chnl_retval)
+ dev_err(&adapter->pdev->dev, "Failed to add MAC address: %d\n",
+ ctlq_msg.cookie.mbx.chnl_retval);
+ break;
+ }
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_ADD_MAC_ADDR,
+ IDPF_VC_ADD_MAC_ADDR_ERR);
+ break;
+ case VIRTCHNL2_OP_DEL_MAC_ADDR:
+ vport_config = adapter->vport_config[vport->idx];
+ if (test_and_clear_bit(IDPF_VPORT_DEL_MAC_REQ,
+ vport_config->flags)) {
+ /* Message was sent asynchronously like the
+ * VIRTCHNL2_OP_ADD_MAC_ADDR
+ */
+ if (ctlq_msg.cookie.mbx.chnl_retval)
+ dev_err(&adapter->pdev->dev, "Failed to delete MAC address: %d\n",
+ ctlq_msg.cookie.mbx.chnl_retval);
+ break;
+ }
+ idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
+ IDPF_VC_DEL_MAC_ADDR,
+ IDPF_VC_DEL_MAC_ADDR_ERR);
+ break;
+ case VIRTCHNL2_OP_EVENT:
+ idpf_recv_event_msg(vport, &ctlq_msg);
+ break;
+ default:
+ dev_warn(&adapter->pdev->dev,
+ "Unhandled virtchnl response %d\n",
+ ctlq_msg.cookie.mbx.chnl_opcode);
+ break;
+ }
+
+post_buffs:
+ if (ctlq_msg.data_len)
+ dma_mem = ctlq_msg.ctx.indirect.payload;
+ else
+ num_q_msg = 0;
+
+ err = idpf_ctlq_post_rx_buffs(&adapter->hw, adapter->hw.arq,
+ &num_q_msg, &dma_mem);
+ /* If post failed clear the only buffer we supplied */
+ if (err && dma_mem)
+ dma_free_coherent(&adapter->pdev->dev, dma_mem->size,
+ dma_mem->va, dma_mem->pa);
+
+ /* Applies only if we are looking for a specific opcode */
+ if (work_done)
+ break;
+ }
+
+ return err;
+}
+
+/**
+ * __idpf_wait_for_event - wrapper function for wait on virtchannel response
+ * @adapter: Driver private data structure
+ * @vport: virtual port structure
+ * @state: check on state upon timeout
+ * @err_check: check if this specific error bit is set
+ * @timeout: Max time to wait
+ *
+ * Checks if state is set upon expiry of timeout. Returns 0 on success,
+ * negative on failure.
+ */
+static int __idpf_wait_for_event(struct idpf_adapter *adapter,
+ struct idpf_vport *vport,
+ enum idpf_vport_vc_state state,
+ enum idpf_vport_vc_state err_check,
+ int timeout)
+{
+ int time_to_wait, num_waits;
+ wait_queue_head_t *vchnl_wq;
+ unsigned long *vc_state;
+
+ time_to_wait = ((timeout <= IDPF_MAX_WAIT) ? timeout : IDPF_MAX_WAIT);
+ num_waits = ((timeout <= IDPF_MAX_WAIT) ? 1 : timeout / IDPF_MAX_WAIT);
+
+ if (vport) {
+ vchnl_wq = &vport->vchnl_wq;
+ vc_state = vport->vc_state;
+ } else {
+ vchnl_wq = &adapter->vchnl_wq;
+ vc_state = adapter->vc_state;
+ }
+
+ while (num_waits) {
+ int event;
+
+ /* If we are here and a reset is detected do not wait but
+ * return. Reset timing is out of drivers control. So
+ * while we are cleaning resources as part of reset if the
+ * underlying HW mailbox is gone, wait on mailbox messages
+ * is not meaningful
+ */
+ if (idpf_is_reset_detected(adapter))
+ return 0;
+
+ event = wait_event_timeout(*vchnl_wq,
+ test_and_clear_bit(state, vc_state),
+ msecs_to_jiffies(time_to_wait));
+ if (event) {
+ if (test_and_clear_bit(err_check, vc_state)) {
+ dev_err(&adapter->pdev->dev, "VC response error %s\n",
+ idpf_vport_vc_state_str[err_check]);
+
+ return -EINVAL;
+ }
+
+ return 0;
+ }
+ num_waits--;
+ }
+
+ /* Timeout occurred */
+ dev_err(&adapter->pdev->dev, "VC timeout, state = %s\n",
+ idpf_vport_vc_state_str[state]);
+
+ return -ETIMEDOUT;
+}
+
+/**
+ * idpf_min_wait_for_event - wait for virtchannel response
+ * @adapter: Driver private data structure
+ * @vport: virtual port structure
+ * @state: check on state upon timeout
+ * @err_check: check if this specific error bit is set
+ *
+ * Returns 0 on success, negative on failure.
+ */
+static int idpf_min_wait_for_event(struct idpf_adapter *adapter,
+ struct idpf_vport *vport,
+ enum idpf_vport_vc_state state,
+ enum idpf_vport_vc_state err_check)
+{
+ return __idpf_wait_for_event(adapter, vport, state, err_check,
+ IDPF_WAIT_FOR_EVENT_TIMEO_MIN);
+}
+
+/**
+ * idpf_wait_for_event - wait for virtchannel response
+ * @adapter: Driver private data structure
+ * @vport: virtual port structure
+ * @state: check on state upon timeout after 500ms
+ * @err_check: check if this specific error bit is set
+ *
+ * Returns 0 on success, negative on failure.
+ */
+static int idpf_wait_for_event(struct idpf_adapter *adapter,
+ struct idpf_vport *vport,
+ enum idpf_vport_vc_state state,
+ enum idpf_vport_vc_state err_check)
+{
+ /* Increasing the timeout in __IDPF_INIT_SW flow to consider large
+ * number of VF's mailbox message responses. When a message is received
+ * on mailbox, this thread is woken up by the idpf_recv_mb_msg before
+ * the timeout expires. Only in the error case i.e. if no message is
+ * received on mailbox, we wait for the complete timeout which is
+ * less likely to happen.
+ */
+ return __idpf_wait_for_event(adapter, vport, state, err_check,
+ IDPF_WAIT_FOR_EVENT_TIMEO);
+}
+
+/**
+ * idpf_wait_for_marker_event - wait for software marker response
+ * @vport: virtual port data structure
+ *
+ * Returns 0 success, negative on failure.
+ **/
+static int idpf_wait_for_marker_event(struct idpf_vport *vport)
+{
+ int event;
+ int i;
+
+ for (i = 0; i < vport->num_txq; i++)
+ set_bit(__IDPF_Q_SW_MARKER, vport->txqs[i]->flags);
+
+ event = wait_event_timeout(vport->sw_marker_wq,
+ test_and_clear_bit(IDPF_VPORT_SW_MARKER,
+ vport->flags),
+ msecs_to_jiffies(500));
+
+ for (i = 0; i < vport->num_txq; i++)
+ clear_bit(__IDPF_Q_POLL_MODE, vport->txqs[i]->flags);
+
+ if (event)
+ return 0;
+
+ dev_warn(&vport->adapter->pdev->dev, "Failed to receive marker packets\n");
+
+ return -ETIMEDOUT;
+}
+
+/**
+ * idpf_send_ver_msg - send virtchnl version message
+ * @adapter: Driver specific private structure
+ *
+ * Send virtchnl version message. Returns 0 on success, negative on failure.
+ */
+static int idpf_send_ver_msg(struct idpf_adapter *adapter)
+{
+ struct virtchnl2_version_info vvi;
+
+ if (adapter->virt_ver_maj) {
+ vvi.major = cpu_to_le32(adapter->virt_ver_maj);
+ vvi.minor = cpu_to_le32(adapter->virt_ver_min);
+ } else {
+ vvi.major = cpu_to_le32(IDPF_VIRTCHNL_VERSION_MAJOR);
+ vvi.minor = cpu_to_le32(IDPF_VIRTCHNL_VERSION_MINOR);
+ }
+
+ return idpf_send_mb_msg(adapter, VIRTCHNL2_OP_VERSION, sizeof(vvi),
+ (u8 *)&vvi);
+}
+
+/**
+ * idpf_recv_ver_msg - Receive virtchnl version message
+ * @adapter: Driver specific private structure
+ *
+ * Receive virtchnl version message. Returns 0 on success, -EAGAIN if we need
+ * to send version message again, otherwise negative on failure.
+ */
+static int idpf_recv_ver_msg(struct idpf_adapter *adapter)
+{
+ struct virtchnl2_version_info vvi;
+ u32 major, minor;
+ int err;
+
+ err = idpf_recv_mb_msg(adapter, VIRTCHNL2_OP_VERSION, &vvi,
+ sizeof(vvi));
+ if (err)
+ return err;
+
+ major = le32_to_cpu(vvi.major);
+ minor = le32_to_cpu(vvi.minor);
+
+ if (major > IDPF_VIRTCHNL_VERSION_MAJOR) {
+ dev_warn(&adapter->pdev->dev,
+ "Virtchnl major version (%d) greater than supported\n",
+ major);
+
+ return -EINVAL;
+ }
+
+ if (major == IDPF_VIRTCHNL_VERSION_MAJOR &&
+ minor > IDPF_VIRTCHNL_VERSION_MINOR)
+ dev_warn(&adapter->pdev->dev,
+ "Virtchnl minor version (%d) didn't match\n", minor);
+
+ /* If we have a mismatch, resend version to update receiver on what
+ * version we will use.
+ */
+ if (!adapter->virt_ver_maj &&
+ major != IDPF_VIRTCHNL_VERSION_MAJOR &&
+ minor != IDPF_VIRTCHNL_VERSION_MINOR)
+ err = -EAGAIN;
+
+ adapter->virt_ver_maj = major;
+ adapter->virt_ver_min = minor;
+
+ return err;
+}
+
+/**
+ * idpf_send_get_caps_msg - Send virtchnl get capabilities message
+ * @adapter: Driver specific private structure
+ *
+ * Send virtchl get capabilities message. Returns 0 on success, negative on
+ * failure.
+ */
+static int idpf_send_get_caps_msg(struct idpf_adapter *adapter)
+{
+ struct virtchnl2_get_capabilities caps = { };
+
+ caps.csum_caps =
+ cpu_to_le32(VIRTCHNL2_CAP_TX_CSUM_L3_IPV4 |
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_TCP |
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_UDP |
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_SCTP |
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_TCP |
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_UDP |
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_SCTP |
+ VIRTCHNL2_CAP_RX_CSUM_L3_IPV4 |
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_TCP |
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_UDP |
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_SCTP |
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_TCP |
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_UDP |
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_SCTP |
+ VIRTCHNL2_CAP_TX_CSUM_L3_SINGLE_TUNNEL |
+ VIRTCHNL2_CAP_RX_CSUM_L3_SINGLE_TUNNEL |
+ VIRTCHNL2_CAP_TX_CSUM_L4_SINGLE_TUNNEL |
+ VIRTCHNL2_CAP_RX_CSUM_L4_SINGLE_TUNNEL |
+ VIRTCHNL2_CAP_RX_CSUM_GENERIC);
+
+ caps.seg_caps =
+ cpu_to_le32(VIRTCHNL2_CAP_SEG_IPV4_TCP |
+ VIRTCHNL2_CAP_SEG_IPV4_UDP |
+ VIRTCHNL2_CAP_SEG_IPV4_SCTP |
+ VIRTCHNL2_CAP_SEG_IPV6_TCP |
+ VIRTCHNL2_CAP_SEG_IPV6_UDP |
+ VIRTCHNL2_CAP_SEG_IPV6_SCTP |
+ VIRTCHNL2_CAP_SEG_TX_SINGLE_TUNNEL);
+
+ caps.rss_caps =
+ cpu_to_le64(VIRTCHNL2_CAP_RSS_IPV4_TCP |
+ VIRTCHNL2_CAP_RSS_IPV4_UDP |
+ VIRTCHNL2_CAP_RSS_IPV4_SCTP |
+ VIRTCHNL2_CAP_RSS_IPV4_OTHER |
+ VIRTCHNL2_CAP_RSS_IPV6_TCP |
+ VIRTCHNL2_CAP_RSS_IPV6_UDP |
+ VIRTCHNL2_CAP_RSS_IPV6_SCTP |
+ VIRTCHNL2_CAP_RSS_IPV6_OTHER);
+
+ caps.hsplit_caps =
+ cpu_to_le32(VIRTCHNL2_CAP_RX_HSPLIT_AT_L4V4 |
+ VIRTCHNL2_CAP_RX_HSPLIT_AT_L4V6);
+
+ caps.rsc_caps =
+ cpu_to_le32(VIRTCHNL2_CAP_RSC_IPV4_TCP |
+ VIRTCHNL2_CAP_RSC_IPV6_TCP);
+
+ caps.other_caps =
+ cpu_to_le64(VIRTCHNL2_CAP_SRIOV |
+ VIRTCHNL2_CAP_MACFILTER |
+ VIRTCHNL2_CAP_SPLITQ_QSCHED |
+ VIRTCHNL2_CAP_PROMISC |
+ VIRTCHNL2_CAP_LOOPBACK);
+
+ return idpf_send_mb_msg(adapter, VIRTCHNL2_OP_GET_CAPS, sizeof(caps),
+ (u8 *)&caps);
+}
+
+/**
+ * idpf_recv_get_caps_msg - Receive virtchnl get capabilities message
+ * @adapter: Driver specific private structure
+ *
+ * Receive virtchnl get capabilities message. Returns 0 on success, negative on
+ * failure.
+ */
+static int idpf_recv_get_caps_msg(struct idpf_adapter *adapter)
+{
+ return idpf_recv_mb_msg(adapter, VIRTCHNL2_OP_GET_CAPS, &adapter->caps,
+ sizeof(struct virtchnl2_get_capabilities));
+}
+
+/**
+ * idpf_vport_alloc_max_qs - Allocate max queues for a vport
+ * @adapter: Driver specific private structure
+ * @max_q: vport max queue structure
+ */
+int idpf_vport_alloc_max_qs(struct idpf_adapter *adapter,
+ struct idpf_vport_max_q *max_q)
+{
+ struct idpf_avail_queue_info *avail_queues = &adapter->avail_queues;
+ struct virtchnl2_get_capabilities *caps = &adapter->caps;
+ u16 default_vports = idpf_get_default_vports(adapter);
+ int max_rx_q, max_tx_q;
+
+ mutex_lock(&adapter->queue_lock);
+
+ max_rx_q = le16_to_cpu(caps->max_rx_q) / default_vports;
+ max_tx_q = le16_to_cpu(caps->max_tx_q) / default_vports;
+ if (adapter->num_alloc_vports < default_vports) {
+ max_q->max_rxq = min_t(u16, max_rx_q, IDPF_MAX_Q);
+ max_q->max_txq = min_t(u16, max_tx_q, IDPF_MAX_Q);
+ } else {
+ max_q->max_rxq = IDPF_MIN_Q;
+ max_q->max_txq = IDPF_MIN_Q;
+ }
+ max_q->max_bufq = max_q->max_rxq * IDPF_MAX_BUFQS_PER_RXQ_GRP;
+ max_q->max_complq = max_q->max_txq;
+
+ if (avail_queues->avail_rxq < max_q->max_rxq ||
+ avail_queues->avail_txq < max_q->max_txq ||
+ avail_queues->avail_bufq < max_q->max_bufq ||
+ avail_queues->avail_complq < max_q->max_complq) {
+ mutex_unlock(&adapter->queue_lock);
+
+ return -EINVAL;
+ }
+
+ avail_queues->avail_rxq -= max_q->max_rxq;
+ avail_queues->avail_txq -= max_q->max_txq;
+ avail_queues->avail_bufq -= max_q->max_bufq;
+ avail_queues->avail_complq -= max_q->max_complq;
+
+ mutex_unlock(&adapter->queue_lock);
+
+ return 0;
+}
+
+/**
+ * idpf_vport_dealloc_max_qs - Deallocate max queues of a vport
+ * @adapter: Driver specific private structure
+ * @max_q: vport max queue structure
+ */
+void idpf_vport_dealloc_max_qs(struct idpf_adapter *adapter,
+ struct idpf_vport_max_q *max_q)
+{
+ struct idpf_avail_queue_info *avail_queues;
+
+ mutex_lock(&adapter->queue_lock);
+ avail_queues = &adapter->avail_queues;
+
+ avail_queues->avail_rxq += max_q->max_rxq;
+ avail_queues->avail_txq += max_q->max_txq;
+ avail_queues->avail_bufq += max_q->max_bufq;
+ avail_queues->avail_complq += max_q->max_complq;
+
+ mutex_unlock(&adapter->queue_lock);
+}
+
+/**
+ * idpf_init_avail_queues - Initialize available queues on the device
+ * @adapter: Driver specific private structure
+ */
+static void idpf_init_avail_queues(struct idpf_adapter *adapter)
+{
+ struct idpf_avail_queue_info *avail_queues = &adapter->avail_queues;
+ struct virtchnl2_get_capabilities *caps = &adapter->caps;
+
+ avail_queues->avail_rxq = le16_to_cpu(caps->max_rx_q);
+ avail_queues->avail_txq = le16_to_cpu(caps->max_tx_q);
+ avail_queues->avail_bufq = le16_to_cpu(caps->max_rx_bufq);
+ avail_queues->avail_complq = le16_to_cpu(caps->max_tx_complq);
+}
+
+/**
+ * idpf_get_reg_intr_vecs - Get vector queue register offset
+ * @vport: virtual port structure
+ * @reg_vals: Register offsets to store in
+ *
+ * Returns number of registers that got populated
+ */
+int idpf_get_reg_intr_vecs(struct idpf_vport *vport,
+ struct idpf_vec_regs *reg_vals)
+{
+ struct virtchnl2_vector_chunks *chunks;
+ struct idpf_vec_regs reg_val;
+ u16 num_vchunks, num_vec;
+ int num_regs = 0, i, j;
+
+ chunks = &vport->adapter->req_vec_chunks->vchunks;
+ num_vchunks = le16_to_cpu(chunks->num_vchunks);
+
+ for (j = 0; j < num_vchunks; j++) {
+ struct virtchnl2_vector_chunk *chunk;
+ u32 dynctl_reg_spacing;
+ u32 itrn_reg_spacing;
+
+ chunk = &chunks->vchunks[j];
+ num_vec = le16_to_cpu(chunk->num_vectors);
+ reg_val.dyn_ctl_reg = le32_to_cpu(chunk->dynctl_reg_start);
+ reg_val.itrn_reg = le32_to_cpu(chunk->itrn_reg_start);
+ reg_val.itrn_index_spacing = le32_to_cpu(chunk->itrn_index_spacing);
+
+ dynctl_reg_spacing = le32_to_cpu(chunk->dynctl_reg_spacing);
+ itrn_reg_spacing = le32_to_cpu(chunk->itrn_reg_spacing);
+
+ for (i = 0; i < num_vec; i++) {
+ reg_vals[num_regs].dyn_ctl_reg = reg_val.dyn_ctl_reg;
+ reg_vals[num_regs].itrn_reg = reg_val.itrn_reg;
+ reg_vals[num_regs].itrn_index_spacing =
+ reg_val.itrn_index_spacing;
+
+ reg_val.dyn_ctl_reg += dynctl_reg_spacing;
+ reg_val.itrn_reg += itrn_reg_spacing;
+ num_regs++;
+ }
+ }
+
+ return num_regs;
+}
+
+/**
+ * idpf_vport_get_q_reg - Get the queue registers for the vport
+ * @reg_vals: register values needing to be set
+ * @num_regs: amount we expect to fill
+ * @q_type: queue model
+ * @chunks: queue regs received over mailbox
+ *
+ * This function parses the queue register offsets from the queue register
+ * chunk information, with a specific queue type and stores it into the array
+ * passed as an argument. It returns the actual number of queue registers that
+ * are filled.
+ */
+static int idpf_vport_get_q_reg(u32 *reg_vals, int num_regs, u32 q_type,
+ struct virtchnl2_queue_reg_chunks *chunks)
+{
+ u16 num_chunks = le16_to_cpu(chunks->num_chunks);
+ int reg_filled = 0, i;
+ u32 reg_val;
+
+ while (num_chunks--) {
+ struct virtchnl2_queue_reg_chunk *chunk;
+ u16 num_q;
+
+ chunk = &chunks->chunks[num_chunks];
+ if (le32_to_cpu(chunk->type) != q_type)
+ continue;
+
+ num_q = le32_to_cpu(chunk->num_queues);
+ reg_val = le64_to_cpu(chunk->qtail_reg_start);
+ for (i = 0; i < num_q && reg_filled < num_regs ; i++) {
+ reg_vals[reg_filled++] = reg_val;
+ reg_val += le32_to_cpu(chunk->qtail_reg_spacing);
+ }
+ }
+
+ return reg_filled;
+}
+
+/**
+ * __idpf_queue_reg_init - initialize queue registers
+ * @vport: virtual port structure
+ * @reg_vals: registers we are initializing
+ * @num_regs: how many registers there are in total
+ * @q_type: queue model
+ *
+ * Return number of queues that are initialized
+ */
+static int __idpf_queue_reg_init(struct idpf_vport *vport, u32 *reg_vals,
+ int num_regs, u32 q_type)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct idpf_queue *q;
+ int i, j, k = 0;
+
+ switch (q_type) {
+ case VIRTCHNL2_QUEUE_TYPE_TX:
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *tx_qgrp = &vport->txq_grps[i];
+
+ for (j = 0; j < tx_qgrp->num_txq && k < num_regs; j++, k++)
+ tx_qgrp->txqs[j]->tail =
+ idpf_get_reg_addr(adapter, reg_vals[k]);
+ }
+ break;
+ case VIRTCHNL2_QUEUE_TYPE_RX:
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+ u16 num_rxq = rx_qgrp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq && k < num_regs; j++, k++) {
+ q = rx_qgrp->singleq.rxqs[j];
+ q->tail = idpf_get_reg_addr(adapter,
+ reg_vals[k]);
+ }
+ }
+ break;
+ case VIRTCHNL2_QUEUE_TYPE_RX_BUFFER:
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+ u8 num_bufqs = vport->num_bufqs_per_qgrp;
+
+ for (j = 0; j < num_bufqs && k < num_regs; j++, k++) {
+ q = &rx_qgrp->splitq.bufq_sets[j].bufq;
+ q->tail = idpf_get_reg_addr(adapter,
+ reg_vals[k]);
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ return k;
+}
+
+/**
+ * idpf_queue_reg_init - initialize queue registers
+ * @vport: virtual port structure
+ *
+ * Return 0 on success, negative on failure
+ */
+int idpf_queue_reg_init(struct idpf_vport *vport)
+{
+ struct virtchnl2_create_vport *vport_params;
+ struct virtchnl2_queue_reg_chunks *chunks;
+ struct idpf_vport_config *vport_config;
+ u16 vport_idx = vport->idx;
+ int num_regs, ret = 0;
+ u32 *reg_vals;
+
+ /* We may never deal with more than 256 same type of queues */
+ reg_vals = kzalloc(sizeof(void *) * IDPF_LARGE_MAX_Q, GFP_KERNEL);
+ if (!reg_vals)
+ return -ENOMEM;
+
+ vport_config = vport->adapter->vport_config[vport_idx];
+ if (vport_config->req_qs_chunks) {
+ struct virtchnl2_add_queues *vc_aq =
+ (struct virtchnl2_add_queues *)vport_config->req_qs_chunks;
+ chunks = &vc_aq->chunks;
+ } else {
+ vport_params = vport->adapter->vport_params_recvd[vport_idx];
+ chunks = &vport_params->chunks;
+ }
+
+ /* Initialize Tx queue tail register address */
+ num_regs = idpf_vport_get_q_reg(reg_vals, IDPF_LARGE_MAX_Q,
+ VIRTCHNL2_QUEUE_TYPE_TX,
+ chunks);
+ if (num_regs < vport->num_txq) {
+ ret = -EINVAL;
+ goto free_reg_vals;
+ }
+
+ num_regs = __idpf_queue_reg_init(vport, reg_vals, num_regs,
+ VIRTCHNL2_QUEUE_TYPE_TX);
+ if (num_regs < vport->num_txq) {
+ ret = -EINVAL;
+ goto free_reg_vals;
+ }
+
+ /* Initialize Rx/buffer queue tail register address based on Rx queue
+ * model
+ */
+ if (idpf_is_queue_model_split(vport->rxq_model)) {
+ num_regs = idpf_vport_get_q_reg(reg_vals, IDPF_LARGE_MAX_Q,
+ VIRTCHNL2_QUEUE_TYPE_RX_BUFFER,
+ chunks);
+ if (num_regs < vport->num_bufq) {
+ ret = -EINVAL;
+ goto free_reg_vals;
+ }
+
+ num_regs = __idpf_queue_reg_init(vport, reg_vals, num_regs,
+ VIRTCHNL2_QUEUE_TYPE_RX_BUFFER);
+ if (num_regs < vport->num_bufq) {
+ ret = -EINVAL;
+ goto free_reg_vals;
+ }
+ } else {
+ num_regs = idpf_vport_get_q_reg(reg_vals, IDPF_LARGE_MAX_Q,
+ VIRTCHNL2_QUEUE_TYPE_RX,
+ chunks);
+ if (num_regs < vport->num_rxq) {
+ ret = -EINVAL;
+ goto free_reg_vals;
+ }
+
+ num_regs = __idpf_queue_reg_init(vport, reg_vals, num_regs,
+ VIRTCHNL2_QUEUE_TYPE_RX);
+ if (num_regs < vport->num_rxq) {
+ ret = -EINVAL;
+ goto free_reg_vals;
+ }
+ }
+
+free_reg_vals:
+ kfree(reg_vals);
+
+ return ret;
+}
+
+/**
+ * idpf_send_create_vport_msg - Send virtchnl create vport message
+ * @adapter: Driver specific private structure
+ * @max_q: vport max queue info
+ *
+ * send virtchnl creae vport message
+ *
+ * Returns 0 on success, negative on failure
+ */
+int idpf_send_create_vport_msg(struct idpf_adapter *adapter,
+ struct idpf_vport_max_q *max_q)
+{
+ struct virtchnl2_create_vport *vport_msg;
+ u16 idx = adapter->next_vport;
+ int err, buf_size;
+
+ buf_size = sizeof(struct virtchnl2_create_vport);
+ if (!adapter->vport_params_reqd[idx]) {
+ adapter->vport_params_reqd[idx] = kzalloc(buf_size,
+ GFP_KERNEL);
+ if (!adapter->vport_params_reqd[idx])
+ return -ENOMEM;
+ }
+
+ vport_msg = adapter->vport_params_reqd[idx];
+ vport_msg->vport_type = cpu_to_le16(VIRTCHNL2_VPORT_TYPE_DEFAULT);
+ vport_msg->vport_index = cpu_to_le16(idx);
+
+ if (adapter->req_tx_splitq)
+ vport_msg->txq_model = cpu_to_le16(VIRTCHNL2_QUEUE_MODEL_SPLIT);
+ else
+ vport_msg->txq_model = cpu_to_le16(VIRTCHNL2_QUEUE_MODEL_SINGLE);
+
+ if (adapter->req_rx_splitq)
+ vport_msg->rxq_model = cpu_to_le16(VIRTCHNL2_QUEUE_MODEL_SPLIT);
+ else
+ vport_msg->rxq_model = cpu_to_le16(VIRTCHNL2_QUEUE_MODEL_SINGLE);
+
+ err = idpf_vport_calc_total_qs(adapter, idx, vport_msg, max_q);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Enough queues are not available");
+
+ return err;
+ }
+
+ mutex_lock(&adapter->vc_buf_lock);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_CREATE_VPORT, buf_size,
+ (u8 *)vport_msg);
+ if (err)
+ goto rel_lock;
+
+ err = idpf_wait_for_event(adapter, NULL, IDPF_VC_CREATE_VPORT,
+ IDPF_VC_CREATE_VPORT_ERR);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to receive create vport message");
+
+ goto rel_lock;
+ }
+
+ if (!adapter->vport_params_recvd[idx]) {
+ adapter->vport_params_recvd[idx] = kzalloc(IDPF_CTLQ_MAX_BUF_LEN,
+ GFP_KERNEL);
+ if (!adapter->vport_params_recvd[idx]) {
+ err = -ENOMEM;
+ goto rel_lock;
+ }
+ }
+
+ vport_msg = adapter->vport_params_recvd[idx];
+ memcpy(vport_msg, adapter->vc_msg, IDPF_CTLQ_MAX_BUF_LEN);
+
+rel_lock:
+ mutex_unlock(&adapter->vc_buf_lock);
+
+ return err;
+}
+
+/**
+ * idpf_check_supported_desc_ids - Verify we have required descriptor support
+ * @vport: virtual port structure
+ *
+ * Return 0 on success, error on failure
+ */
+int idpf_check_supported_desc_ids(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_create_vport *vport_msg;
+ u64 rx_desc_ids, tx_desc_ids;
+
+ vport_msg = adapter->vport_params_recvd[vport->idx];
+
+ rx_desc_ids = le64_to_cpu(vport_msg->rx_desc_ids);
+ tx_desc_ids = le64_to_cpu(vport_msg->tx_desc_ids);
+
+ if (vport->rxq_model == VIRTCHNL2_QUEUE_MODEL_SPLIT) {
+ if (!(rx_desc_ids & VIRTCHNL2_RXDID_2_FLEX_SPLITQ_M)) {
+ dev_info(&adapter->pdev->dev, "Minimum RX descriptor support not provided, using the default\n");
+ vport_msg->rx_desc_ids = cpu_to_le64(VIRTCHNL2_RXDID_2_FLEX_SPLITQ_M);
+ }
+ } else {
+ if (!(rx_desc_ids & VIRTCHNL2_RXDID_2_FLEX_SQ_NIC_M))
+ vport->base_rxd = true;
+ }
+
+ if (vport->txq_model != VIRTCHNL2_QUEUE_MODEL_SPLIT)
+ return 0;
+
+ if ((tx_desc_ids & MIN_SUPPORT_TXDID) != MIN_SUPPORT_TXDID) {
+ dev_info(&adapter->pdev->dev, "Minimum TX descriptor support not provided, using the default\n");
+ vport_msg->tx_desc_ids = cpu_to_le64(MIN_SUPPORT_TXDID);
+ }
+
+ return 0;
+}
+
+/**
+ * idpf_send_destroy_vport_msg - Send virtchnl destroy vport message
+ * @vport: virtual port data structure
+ *
+ * Send virtchnl destroy vport message. Returns 0 on success, negative on
+ * failure.
+ */
+int idpf_send_destroy_vport_msg(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_vport v_id;
+ int err;
+
+ v_id.vport_id = cpu_to_le32(vport->vport_id);
+
+ mutex_lock(&vport->vc_buf_lock);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_DESTROY_VPORT,
+ sizeof(v_id), (u8 *)&v_id);
+ if (err)
+ goto rel_lock;
+
+ err = idpf_min_wait_for_event(adapter, vport, IDPF_VC_DESTROY_VPORT,
+ IDPF_VC_DESTROY_VPORT_ERR);
+
+rel_lock:
+ mutex_unlock(&vport->vc_buf_lock);
+
+ return err;
+}
+
+/**
+ * idpf_send_enable_vport_msg - Send virtchnl enable vport message
+ * @vport: virtual port data structure
+ *
+ * Send enable vport virtchnl message. Returns 0 on success, negative on
+ * failure.
+ */
+int idpf_send_enable_vport_msg(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_vport v_id;
+ int err;
+
+ v_id.vport_id = cpu_to_le32(vport->vport_id);
+
+ mutex_lock(&vport->vc_buf_lock);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_ENABLE_VPORT,
+ sizeof(v_id), (u8 *)&v_id);
+ if (err)
+ goto rel_lock;
+
+ err = idpf_wait_for_event(adapter, vport, IDPF_VC_ENA_VPORT,
+ IDPF_VC_ENA_VPORT_ERR);
+
+rel_lock:
+ mutex_unlock(&vport->vc_buf_lock);
+
+ return err;
+}
+
+/**
+ * idpf_send_disable_vport_msg - Send virtchnl disable vport message
+ * @vport: virtual port data structure
+ *
+ * Send disable vport virtchnl message. Returns 0 on success, negative on
+ * failure.
+ */
+int idpf_send_disable_vport_msg(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_vport v_id;
+ int err;
+
+ v_id.vport_id = cpu_to_le32(vport->vport_id);
+
+ mutex_lock(&vport->vc_buf_lock);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_DISABLE_VPORT,
+ sizeof(v_id), (u8 *)&v_id);
+ if (err)
+ goto rel_lock;
+
+ err = idpf_min_wait_for_event(adapter, vport, IDPF_VC_DIS_VPORT,
+ IDPF_VC_DIS_VPORT_ERR);
+
+rel_lock:
+ mutex_unlock(&vport->vc_buf_lock);
+
+ return err;
+}
+
+/**
+ * idpf_send_config_tx_queues_msg - Send virtchnl config tx queues message
+ * @vport: virtual port data structure
+ *
+ * Send config tx queues virtchnl message. Returns 0 on success, negative on
+ * failure.
+ */
+static int idpf_send_config_tx_queues_msg(struct idpf_vport *vport)
+{
+ struct virtchnl2_config_tx_queues *ctq;
+ u32 config_sz, chunk_sz, buf_sz;
+ int totqs, num_msgs, num_chunks;
+ struct virtchnl2_txq_info *qi;
+ int err = 0, i, k = 0;
+
+ totqs = vport->num_txq + vport->num_complq;
+ qi = kcalloc(totqs, sizeof(struct virtchnl2_txq_info), GFP_KERNEL);
+ if (!qi)
+ return -ENOMEM;
+
+ /* Populate the queue info buffer with all queue context info */
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *tx_qgrp = &vport->txq_grps[i];
+ int j, sched_mode;
+
+ for (j = 0; j < tx_qgrp->num_txq; j++, k++) {
+ qi[k].queue_id =
+ cpu_to_le32(tx_qgrp->txqs[j]->q_id);
+ qi[k].model =
+ cpu_to_le16(vport->txq_model);
+ qi[k].type =
+ cpu_to_le32(tx_qgrp->txqs[j]->q_type);
+ qi[k].ring_len =
+ cpu_to_le16(tx_qgrp->txqs[j]->desc_count);
+ qi[k].dma_ring_addr =
+ cpu_to_le64(tx_qgrp->txqs[j]->dma);
+ if (idpf_is_queue_model_split(vport->txq_model)) {
+ struct idpf_queue *q = tx_qgrp->txqs[j];
+
+ qi[k].tx_compl_queue_id =
+ cpu_to_le16(tx_qgrp->complq->q_id);
+ qi[k].relative_queue_id = cpu_to_le16(j);
+
+ if (test_bit(__IDPF_Q_FLOW_SCH_EN, q->flags))
+ qi[k].sched_mode =
+ cpu_to_le16(VIRTCHNL2_TXQ_SCHED_MODE_FLOW);
+ else
+ qi[k].sched_mode =
+ cpu_to_le16(VIRTCHNL2_TXQ_SCHED_MODE_QUEUE);
+ } else {
+ qi[k].sched_mode =
+ cpu_to_le16(VIRTCHNL2_TXQ_SCHED_MODE_QUEUE);
+ }
+ }
+
+ if (!idpf_is_queue_model_split(vport->txq_model))
+ continue;
+
+ qi[k].queue_id = cpu_to_le32(tx_qgrp->complq->q_id);
+ qi[k].model = cpu_to_le16(vport->txq_model);
+ qi[k].type = cpu_to_le32(tx_qgrp->complq->q_type);
+ qi[k].ring_len = cpu_to_le16(tx_qgrp->complq->desc_count);
+ qi[k].dma_ring_addr = cpu_to_le64(tx_qgrp->complq->dma);
+
+ if (test_bit(__IDPF_Q_FLOW_SCH_EN, tx_qgrp->complq->flags))
+ sched_mode = VIRTCHNL2_TXQ_SCHED_MODE_FLOW;
+ else
+ sched_mode = VIRTCHNL2_TXQ_SCHED_MODE_QUEUE;
+ qi[k].sched_mode = cpu_to_le16(sched_mode);
+
+ k++;
+ }
+
+ /* Make sure accounting agrees */
+ if (k != totqs) {
+ err = -EINVAL;
+ goto error;
+ }
+
+ /* Chunk up the queue contexts into multiple messages to avoid
+ * sending a control queue message buffer that is too large
+ */
+ config_sz = sizeof(struct virtchnl2_config_tx_queues);
+ chunk_sz = sizeof(struct virtchnl2_txq_info);
+
+ num_chunks = min_t(u32, IDPF_NUM_CHUNKS_PER_MSG(config_sz, chunk_sz),
+ totqs);
+ num_msgs = DIV_ROUND_UP(totqs, num_chunks);
+
+ buf_sz = struct_size(ctq, qinfo, num_chunks);
+ ctq = kzalloc(buf_sz, GFP_KERNEL);
+ if (!ctq) {
+ err = -ENOMEM;
+ goto error;
+ }
+
+ mutex_lock(&vport->vc_buf_lock);
+
+ for (i = 0, k = 0; i < num_msgs; i++) {
+ memset(ctq, 0, buf_sz);
+ ctq->vport_id = cpu_to_le32(vport->vport_id);
+ ctq->num_qinfo = cpu_to_le16(num_chunks);
+ memcpy(ctq->qinfo, &qi[k], chunk_sz * num_chunks);
+
+ err = idpf_send_mb_msg(vport->adapter,
+ VIRTCHNL2_OP_CONFIG_TX_QUEUES,
+ buf_sz, (u8 *)ctq);
+ if (err)
+ goto mbx_error;
+
+ err = idpf_wait_for_event(vport->adapter, vport,
+ IDPF_VC_CONFIG_TXQ,
+ IDPF_VC_CONFIG_TXQ_ERR);
+ if (err)
+ goto mbx_error;
+
+ k += num_chunks;
+ totqs -= num_chunks;
+ num_chunks = min(num_chunks, totqs);
+ /* Recalculate buffer size */
+ buf_sz = struct_size(ctq, qinfo, num_chunks);
+ }
+
+mbx_error:
+ mutex_unlock(&vport->vc_buf_lock);
+ kfree(ctq);
+error:
+ kfree(qi);
+
+ return err;
+}
+
+/**
+ * idpf_send_config_rx_queues_msg - Send virtchnl config rx queues message
+ * @vport: virtual port data structure
+ *
+ * Send config rx queues virtchnl message. Returns 0 on success, negative on
+ * failure.
+ */
+static int idpf_send_config_rx_queues_msg(struct idpf_vport *vport)
+{
+ struct virtchnl2_config_rx_queues *crq;
+ u32 config_sz, chunk_sz, buf_sz;
+ int totqs, num_msgs, num_chunks;
+ struct virtchnl2_rxq_info *qi;
+ int err = 0, i, k = 0;
+
+ totqs = vport->num_rxq + vport->num_bufq;
+ qi = kcalloc(totqs, sizeof(struct virtchnl2_rxq_info), GFP_KERNEL);
+ if (!qi)
+ return -ENOMEM;
+
+ /* Populate the queue info buffer with all queue context info */
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+ u16 num_rxq;
+ int j;
+
+ if (!idpf_is_queue_model_split(vport->rxq_model))
+ goto setup_rxqs;
+
+ for (j = 0; j < vport->num_bufqs_per_qgrp; j++, k++) {
+ struct idpf_queue *bufq =
+ &rx_qgrp->splitq.bufq_sets[j].bufq;
+
+ qi[k].queue_id = cpu_to_le32(bufq->q_id);
+ qi[k].model = cpu_to_le16(vport->rxq_model);
+ qi[k].type = cpu_to_le32(bufq->q_type);
+ qi[k].desc_ids = cpu_to_le64(VIRTCHNL2_RXDID_2_FLEX_SPLITQ_M);
+ qi[k].ring_len = cpu_to_le16(bufq->desc_count);
+ qi[k].dma_ring_addr = cpu_to_le64(bufq->dma);
+ qi[k].data_buffer_size = cpu_to_le32(bufq->rx_buf_size);
+ qi[k].buffer_notif_stride = bufq->rx_buf_stride;
+ qi[k].rx_buffer_low_watermark =
+ cpu_to_le16(bufq->rx_buffer_low_watermark);
+ if (idpf_is_feature_ena(vport, NETIF_F_GRO_HW))
+ qi[k].qflags |= cpu_to_le16(VIRTCHNL2_RXQ_RSC);
+ }
+
+setup_rxqs:
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ num_rxq = rx_qgrp->splitq.num_rxq_sets;
+ else
+ num_rxq = rx_qgrp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq; j++, k++) {
+ struct idpf_queue *rxq;
+
+ if (!idpf_is_queue_model_split(vport->rxq_model)) {
+ rxq = rx_qgrp->singleq.rxqs[j];
+ goto common_qi_fields;
+ }
+ rxq = &rx_qgrp->splitq.rxq_sets[j]->rxq;
+ qi[k].rx_bufq1_id =
+ cpu_to_le16(rxq->rxq_grp->splitq.bufq_sets[0].bufq.q_id);
+ if (vport->num_bufqs_per_qgrp > IDPF_SINGLE_BUFQ_PER_RXQ_GRP) {
+ qi[k].bufq2_ena = IDPF_BUFQ2_ENA;
+ qi[k].rx_bufq2_id =
+ cpu_to_le16(rxq->rxq_grp->splitq.bufq_sets[1].bufq.q_id);
+ }
+ qi[k].rx_buffer_low_watermark =
+ cpu_to_le16(rxq->rx_buffer_low_watermark);
+ if (idpf_is_feature_ena(vport, NETIF_F_GRO_HW))
+ qi[k].qflags |= cpu_to_le16(VIRTCHNL2_RXQ_RSC);
+
+common_qi_fields:
+ if (rxq->rx_hsplit_en) {
+ qi[k].qflags |=
+ cpu_to_le16(VIRTCHNL2_RXQ_HDR_SPLIT);
+ qi[k].hdr_buffer_size =
+ cpu_to_le16(rxq->rx_hbuf_size);
+ }
+ qi[k].queue_id = cpu_to_le32(rxq->q_id);
+ qi[k].model = cpu_to_le16(vport->rxq_model);
+ qi[k].type = cpu_to_le32(rxq->q_type);
+ qi[k].ring_len = cpu_to_le16(rxq->desc_count);
+ qi[k].dma_ring_addr = cpu_to_le64(rxq->dma);
+ qi[k].max_pkt_size = cpu_to_le32(rxq->rx_max_pkt_size);
+ qi[k].data_buffer_size = cpu_to_le32(rxq->rx_buf_size);
+ qi[k].qflags |=
+ cpu_to_le16(VIRTCHNL2_RX_DESC_SIZE_32BYTE);
+ qi[k].desc_ids = cpu_to_le64(rxq->rxdids);
+ }
+ }
+
+ /* Make sure accounting agrees */
+ if (k != totqs) {
+ err = -EINVAL;
+ goto error;
+ }
+
+ /* Chunk up the queue contexts into multiple messages to avoid
+ * sending a control queue message buffer that is too large
+ */
+ config_sz = sizeof(struct virtchnl2_config_rx_queues);
+ chunk_sz = sizeof(struct virtchnl2_rxq_info);
+
+ num_chunks = min_t(u32, IDPF_NUM_CHUNKS_PER_MSG(config_sz, chunk_sz),
+ totqs);
+ num_msgs = DIV_ROUND_UP(totqs, num_chunks);
+
+ buf_sz = struct_size(crq, qinfo, num_chunks);
+ crq = kzalloc(buf_sz, GFP_KERNEL);
+ if (!crq) {
+ err = -ENOMEM;
+ goto error;
+ }
+
+ mutex_lock(&vport->vc_buf_lock);
+
+ for (i = 0, k = 0; i < num_msgs; i++) {
+ memset(crq, 0, buf_sz);
+ crq->vport_id = cpu_to_le32(vport->vport_id);
+ crq->num_qinfo = cpu_to_le16(num_chunks);
+ memcpy(crq->qinfo, &qi[k], chunk_sz * num_chunks);
+
+ err = idpf_send_mb_msg(vport->adapter,
+ VIRTCHNL2_OP_CONFIG_RX_QUEUES,
+ buf_sz, (u8 *)crq);
+ if (err)
+ goto mbx_error;
+
+ err = idpf_wait_for_event(vport->adapter, vport,
+ IDPF_VC_CONFIG_RXQ,
+ IDPF_VC_CONFIG_RXQ_ERR);
+ if (err)
+ goto mbx_error;
+
+ k += num_chunks;
+ totqs -= num_chunks;
+ num_chunks = min(num_chunks, totqs);
+ /* Recalculate buffer size */
+ buf_sz = struct_size(crq, qinfo, num_chunks);
+ }
+
+mbx_error:
+ mutex_unlock(&vport->vc_buf_lock);
+ kfree(crq);
+error:
+ kfree(qi);
+
+ return err;
+}
+
+/**
+ * idpf_send_ena_dis_queues_msg - Send virtchnl enable or disable
+ * queues message
+ * @vport: virtual port data structure
+ * @vc_op: virtchnl op code to send
+ *
+ * Send enable or disable queues virtchnl message. Returns 0 on success,
+ * negative on failure.
+ */
+static int idpf_send_ena_dis_queues_msg(struct idpf_vport *vport, u32 vc_op)
+{
+ u32 num_msgs, num_chunks, num_txq, num_rxq, num_q;
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_del_ena_dis_queues *eq;
+ struct virtchnl2_queue_chunks *qcs;
+ struct virtchnl2_queue_chunk *qc;
+ u32 config_sz, chunk_sz, buf_sz;
+ int i, j, k = 0, err = 0;
+
+ /* validate virtchnl op */
+ switch (vc_op) {
+ case VIRTCHNL2_OP_ENABLE_QUEUES:
+ case VIRTCHNL2_OP_DISABLE_QUEUES:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ num_txq = vport->num_txq + vport->num_complq;
+ num_rxq = vport->num_rxq + vport->num_bufq;
+ num_q = num_txq + num_rxq;
+ buf_sz = sizeof(struct virtchnl2_queue_chunk) * num_q;
+ qc = kzalloc(buf_sz, GFP_KERNEL);
+ if (!qc)
+ return -ENOMEM;
+
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *tx_qgrp = &vport->txq_grps[i];
+
+ for (j = 0; j < tx_qgrp->num_txq; j++, k++) {
+ qc[k].type = cpu_to_le32(tx_qgrp->txqs[j]->q_type);
+ qc[k].start_queue_id = cpu_to_le32(tx_qgrp->txqs[j]->q_id);
+ qc[k].num_queues = cpu_to_le32(IDPF_NUMQ_PER_CHUNK);
+ }
+ }
+ if (vport->num_txq != k) {
+ err = -EINVAL;
+ goto error;
+ }
+
+ if (!idpf_is_queue_model_split(vport->txq_model))
+ goto setup_rx;
+
+ for (i = 0; i < vport->num_txq_grp; i++, k++) {
+ struct idpf_txq_group *tx_qgrp = &vport->txq_grps[i];
+
+ qc[k].type = cpu_to_le32(tx_qgrp->complq->q_type);
+ qc[k].start_queue_id = cpu_to_le32(tx_qgrp->complq->q_id);
+ qc[k].num_queues = cpu_to_le32(IDPF_NUMQ_PER_CHUNK);
+ }
+ if (vport->num_complq != (k - vport->num_txq)) {
+ err = -EINVAL;
+ goto error;
+ }
+
+setup_rx:
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ num_rxq = rx_qgrp->splitq.num_rxq_sets;
+ else
+ num_rxq = rx_qgrp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq; j++, k++) {
+ if (idpf_is_queue_model_split(vport->rxq_model)) {
+ qc[k].start_queue_id =
+ cpu_to_le32(rx_qgrp->splitq.rxq_sets[j]->rxq.q_id);
+ qc[k].type =
+ cpu_to_le32(rx_qgrp->splitq.rxq_sets[j]->rxq.q_type);
+ } else {
+ qc[k].start_queue_id =
+ cpu_to_le32(rx_qgrp->singleq.rxqs[j]->q_id);
+ qc[k].type =
+ cpu_to_le32(rx_qgrp->singleq.rxqs[j]->q_type);
+ }
+ qc[k].num_queues = cpu_to_le32(IDPF_NUMQ_PER_CHUNK);
+ }
+ }
+ if (vport->num_rxq != k - (vport->num_txq + vport->num_complq)) {
+ err = -EINVAL;
+ goto error;
+ }
+
+ if (!idpf_is_queue_model_split(vport->rxq_model))
+ goto send_msg;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+
+ for (j = 0; j < vport->num_bufqs_per_qgrp; j++, k++) {
+ struct idpf_queue *q;
+
+ q = &rx_qgrp->splitq.bufq_sets[j].bufq;
+ qc[k].type = cpu_to_le32(q->q_type);
+ qc[k].start_queue_id = cpu_to_le32(q->q_id);
+ qc[k].num_queues = cpu_to_le32(IDPF_NUMQ_PER_CHUNK);
+ }
+ }
+ if (vport->num_bufq != k - (vport->num_txq +
+ vport->num_complq +
+ vport->num_rxq)) {
+ err = -EINVAL;
+ goto error;
+ }
+
+send_msg:
+ /* Chunk up the queue info into multiple messages */
+ config_sz = sizeof(struct virtchnl2_del_ena_dis_queues);
+ chunk_sz = sizeof(struct virtchnl2_queue_chunk);
+
+ num_chunks = min_t(u32, IDPF_NUM_CHUNKS_PER_MSG(config_sz, chunk_sz),
+ num_q);
+ num_msgs = DIV_ROUND_UP(num_q, num_chunks);
+
+ buf_sz = struct_size(eq, chunks.chunks, num_chunks);
+ eq = kzalloc(buf_sz, GFP_KERNEL);
+ if (!eq) {
+ err = -ENOMEM;
+ goto error;
+ }
+
+ mutex_lock(&vport->vc_buf_lock);
+
+ for (i = 0, k = 0; i < num_msgs; i++) {
+ memset(eq, 0, buf_sz);
+ eq->vport_id = cpu_to_le32(vport->vport_id);
+ eq->chunks.num_chunks = cpu_to_le16(num_chunks);
+ qcs = &eq->chunks;
+ memcpy(qcs->chunks, &qc[k], chunk_sz * num_chunks);
+
+ err = idpf_send_mb_msg(adapter, vc_op, buf_sz, (u8 *)eq);
+ if (err)
+ goto mbx_error;
+
+ if (vc_op == VIRTCHNL2_OP_ENABLE_QUEUES)
+ err = idpf_wait_for_event(adapter, vport,
+ IDPF_VC_ENA_QUEUES,
+ IDPF_VC_ENA_QUEUES_ERR);
+ else
+ err = idpf_min_wait_for_event(adapter, vport,
+ IDPF_VC_DIS_QUEUES,
+ IDPF_VC_DIS_QUEUES_ERR);
+ if (err)
+ goto mbx_error;
+
+ k += num_chunks;
+ num_q -= num_chunks;
+ num_chunks = min(num_chunks, num_q);
+ /* Recalculate buffer size */
+ buf_sz = struct_size(eq, chunks.chunks, num_chunks);
+ }
+
+mbx_error:
+ mutex_unlock(&vport->vc_buf_lock);
+ kfree(eq);
+error:
+ kfree(qc);
+
+ return err;
+}
+
+/**
+ * idpf_send_map_unmap_queue_vector_msg - Send virtchnl map or unmap queue
+ * vector message
+ * @vport: virtual port data structure
+ * @map: true for map and false for unmap
+ *
+ * Send map or unmap queue vector virtchnl message. Returns 0 on success,
+ * negative on failure.
+ */
+int idpf_send_map_unmap_queue_vector_msg(struct idpf_vport *vport, bool map)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_queue_vector_maps *vqvm;
+ struct virtchnl2_queue_vector *vqv;
+ u32 config_sz, chunk_sz, buf_sz;
+ u32 num_msgs, num_chunks, num_q;
+ int i, j, k = 0, err = 0;
+
+ num_q = vport->num_txq + vport->num_rxq;
+
+ buf_sz = sizeof(struct virtchnl2_queue_vector) * num_q;
+ vqv = kzalloc(buf_sz, GFP_KERNEL);
+ if (!vqv)
+ return -ENOMEM;
+
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *tx_qgrp = &vport->txq_grps[i];
+
+ for (j = 0; j < tx_qgrp->num_txq; j++, k++) {
+ vqv[k].queue_type = cpu_to_le32(tx_qgrp->txqs[j]->q_type);
+ vqv[k].queue_id = cpu_to_le32(tx_qgrp->txqs[j]->q_id);
+
+ if (idpf_is_queue_model_split(vport->txq_model)) {
+ vqv[k].vector_id =
+ cpu_to_le16(tx_qgrp->complq->q_vector->v_idx);
+ vqv[k].itr_idx =
+ cpu_to_le32(tx_qgrp->complq->q_vector->tx_itr_idx);
+ } else {
+ vqv[k].vector_id =
+ cpu_to_le16(tx_qgrp->txqs[j]->q_vector->v_idx);
+ vqv[k].itr_idx =
+ cpu_to_le32(tx_qgrp->txqs[j]->q_vector->tx_itr_idx);
+ }
+ }
+ }
+
+ if (vport->num_txq != k) {
+ err = -EINVAL;
+ goto error;
+ }
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+ u16 num_rxq;
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ num_rxq = rx_qgrp->splitq.num_rxq_sets;
+ else
+ num_rxq = rx_qgrp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq; j++, k++) {
+ struct idpf_queue *rxq;
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ rxq = &rx_qgrp->splitq.rxq_sets[j]->rxq;
+ else
+ rxq = rx_qgrp->singleq.rxqs[j];
+
+ vqv[k].queue_type = cpu_to_le32(rxq->q_type);
+ vqv[k].queue_id = cpu_to_le32(rxq->q_id);
+ vqv[k].vector_id = cpu_to_le16(rxq->q_vector->v_idx);
+ vqv[k].itr_idx = cpu_to_le32(rxq->q_vector->rx_itr_idx);
+ }
+ }
+
+ if (idpf_is_queue_model_split(vport->txq_model)) {
+ if (vport->num_rxq != k - vport->num_complq) {
+ err = -EINVAL;
+ goto error;
+ }
+ } else {
+ if (vport->num_rxq != k - vport->num_txq) {
+ err = -EINVAL;
+ goto error;
+ }
+ }
+
+ /* Chunk up the vector info into multiple messages */
+ config_sz = sizeof(struct virtchnl2_queue_vector_maps);
+ chunk_sz = sizeof(struct virtchnl2_queue_vector);
+
+ num_chunks = min_t(u32, IDPF_NUM_CHUNKS_PER_MSG(config_sz, chunk_sz),
+ num_q);
+ num_msgs = DIV_ROUND_UP(num_q, num_chunks);
+
+ buf_sz = struct_size(vqvm, qv_maps, num_chunks);
+ vqvm = kzalloc(buf_sz, GFP_KERNEL);
+ if (!vqvm) {
+ err = -ENOMEM;
+ goto error;
+ }
+
+ mutex_lock(&vport->vc_buf_lock);
+
+ for (i = 0, k = 0; i < num_msgs; i++) {
+ memset(vqvm, 0, buf_sz);
+ vqvm->vport_id = cpu_to_le32(vport->vport_id);
+ vqvm->num_qv_maps = cpu_to_le16(num_chunks);
+ memcpy(vqvm->qv_maps, &vqv[k], chunk_sz * num_chunks);
+
+ if (map) {
+ err = idpf_send_mb_msg(adapter,
+ VIRTCHNL2_OP_MAP_QUEUE_VECTOR,
+ buf_sz, (u8 *)vqvm);
+ if (!err)
+ err = idpf_wait_for_event(adapter, vport,
+ IDPF_VC_MAP_IRQ,
+ IDPF_VC_MAP_IRQ_ERR);
+ } else {
+ err = idpf_send_mb_msg(adapter,
+ VIRTCHNL2_OP_UNMAP_QUEUE_VECTOR,
+ buf_sz, (u8 *)vqvm);
+ if (!err)
+ err =
+ idpf_min_wait_for_event(adapter, vport,
+ IDPF_VC_UNMAP_IRQ,
+ IDPF_VC_UNMAP_IRQ_ERR);
+ }
+ if (err)
+ goto mbx_error;
+
+ k += num_chunks;
+ num_q -= num_chunks;
+ num_chunks = min(num_chunks, num_q);
+ /* Recalculate buffer size */
+ buf_sz = struct_size(vqvm, qv_maps, num_chunks);
+ }
+
+mbx_error:
+ mutex_unlock(&vport->vc_buf_lock);
+ kfree(vqvm);
+error:
+ kfree(vqv);
+
+ return err;
+}
+
+/**
+ * idpf_send_enable_queues_msg - send enable queues virtchnl message
+ * @vport: Virtual port private data structure
+ *
+ * Will send enable queues virtchnl message. Returns 0 on success, negative on
+ * failure.
+ */
+int idpf_send_enable_queues_msg(struct idpf_vport *vport)
+{
+ return idpf_send_ena_dis_queues_msg(vport, VIRTCHNL2_OP_ENABLE_QUEUES);
+}
+
+/**
+ * idpf_send_disable_queues_msg - send disable queues virtchnl message
+ * @vport: Virtual port private data structure
+ *
+ * Will send disable queues virtchnl message. Returns 0 on success, negative
+ * on failure.
+ */
+int idpf_send_disable_queues_msg(struct idpf_vport *vport)
+{
+ int err, i;
+
+ err = idpf_send_ena_dis_queues_msg(vport, VIRTCHNL2_OP_DISABLE_QUEUES);
+ if (err)
+ return err;
+
+ /* switch to poll mode as interrupts will be disabled after disable
+ * queues virtchnl message is sent
+ */
+ for (i = 0; i < vport->num_txq; i++)
+ set_bit(__IDPF_Q_POLL_MODE, vport->txqs[i]->flags);
+
+ /* schedule the napi to receive all the marker packets */
+ for (i = 0; i < vport->num_q_vectors; i++)
+ napi_schedule(&vport->q_vectors[i].napi);
+
+ return idpf_wait_for_marker_event(vport);
+}
+
+/**
+ * idpf_convert_reg_to_queue_chunks - Copy queue chunk information to the right
+ * structure
+ * @dchunks: Destination chunks to store data to
+ * @schunks: Source chunks to copy data from
+ * @num_chunks: number of chunks to copy
+ */
+static void idpf_convert_reg_to_queue_chunks(struct virtchnl2_queue_chunk *dchunks,
+ struct virtchnl2_queue_reg_chunk *schunks,
+ u16 num_chunks)
+{
+ u16 i;
+
+ for (i = 0; i < num_chunks; i++) {
+ dchunks[i].type = schunks[i].type;
+ dchunks[i].start_queue_id = schunks[i].start_queue_id;
+ dchunks[i].num_queues = schunks[i].num_queues;
+ }
+}
+
+/**
+ * idpf_send_delete_queues_msg - send delete queues virtchnl message
+ * @vport: Virtual port private data structure
+ *
+ * Will send delete queues virtchnl message. Return 0 on success, negative on
+ * failure.
+ */
+int idpf_send_delete_queues_msg(struct idpf_vport *vport)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_create_vport *vport_params;
+ struct virtchnl2_queue_reg_chunks *chunks;
+ struct virtchnl2_del_ena_dis_queues *eq;
+ struct idpf_vport_config *vport_config;
+ u16 vport_idx = vport->idx;
+ int buf_size, err;
+ u16 num_chunks;
+
+ vport_config = adapter->vport_config[vport_idx];
+ if (vport_config->req_qs_chunks) {
+ struct virtchnl2_add_queues *vc_aq =
+ (struct virtchnl2_add_queues *)vport_config->req_qs_chunks;
+ chunks = &vc_aq->chunks;
+ } else {
+ vport_params = adapter->vport_params_recvd[vport_idx];
+ chunks = &vport_params->chunks;
+ }
+
+ num_chunks = le16_to_cpu(chunks->num_chunks);
+ buf_size = struct_size(eq, chunks.chunks, num_chunks);
+
+ eq = kzalloc(buf_size, GFP_KERNEL);
+ if (!eq)
+ return -ENOMEM;
+
+ eq->vport_id = cpu_to_le32(vport->vport_id);
+ eq->chunks.num_chunks = cpu_to_le16(num_chunks);
+
+ idpf_convert_reg_to_queue_chunks(eq->chunks.chunks, chunks->chunks,
+ num_chunks);
+
+ mutex_lock(&vport->vc_buf_lock);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_DEL_QUEUES,
+ buf_size, (u8 *)eq);
+ if (err)
+ goto rel_lock;
+
+ err = idpf_min_wait_for_event(adapter, vport, IDPF_VC_DEL_QUEUES,
+ IDPF_VC_DEL_QUEUES_ERR);
+
+rel_lock:
+ mutex_unlock(&vport->vc_buf_lock);
+ kfree(eq);
+
+ return err;
+}
+
+/**
+ * idpf_send_config_queues_msg - Send config queues virtchnl message
+ * @vport: Virtual port private data structure
+ *
+ * Will send config queues virtchnl message. Returns 0 on success, negative on
+ * failure.
+ */
+int idpf_send_config_queues_msg(struct idpf_vport *vport)
+{
+ int err;
+
+ err = idpf_send_config_tx_queues_msg(vport);
+ if (err)
+ return err;
+
+ return idpf_send_config_rx_queues_msg(vport);
+}
+
+/**
+ * idpf_send_add_queues_msg - Send virtchnl add queues message
+ * @vport: Virtual port private data structure
+ * @num_tx_q: number of transmit queues
+ * @num_complq: number of transmit completion queues
+ * @num_rx_q: number of receive queues
+ * @num_rx_bufq: number of receive buffer queues
+ *
+ * Returns 0 on success, negative on failure. vport _MUST_ be const here as
+ * we should not change any fields within vport itself in this function.
+ */
+int idpf_send_add_queues_msg(const struct idpf_vport *vport, u16 num_tx_q,
+ u16 num_complq, u16 num_rx_q, u16 num_rx_bufq)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct idpf_vport_config *vport_config;
+ struct virtchnl2_add_queues aq = { };
+ struct virtchnl2_add_queues *vc_msg;
+ u16 vport_idx = vport->idx;
+ int size, err;
+
+ vport_config = adapter->vport_config[vport_idx];
+
+ aq.vport_id = cpu_to_le32(vport->vport_id);
+ aq.num_tx_q = cpu_to_le16(num_tx_q);
+ aq.num_tx_complq = cpu_to_le16(num_complq);
+ aq.num_rx_q = cpu_to_le16(num_rx_q);
+ aq.num_rx_bufq = cpu_to_le16(num_rx_bufq);
+
+ mutex_lock(&((struct idpf_vport *)vport)->vc_buf_lock);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_ADD_QUEUES,
+ sizeof(struct virtchnl2_add_queues), (u8 *)&aq);
+ if (err)
+ goto rel_lock;
+
+ /* We want vport to be const to prevent incidental code changes making
+ * changes to the vport config. We're making a special exception here
+ * to discard const to use the virtchnl.
+ */
+ err = idpf_wait_for_event(adapter, (struct idpf_vport *)vport,
+ IDPF_VC_ADD_QUEUES, IDPF_VC_ADD_QUEUES_ERR);
+ if (err)
+ goto rel_lock;
+
+ kfree(vport_config->req_qs_chunks);
+ vport_config->req_qs_chunks = NULL;
+
+ vc_msg = (struct virtchnl2_add_queues *)vport->vc_msg;
+ /* compare vc_msg num queues with vport num queues */
+ if (le16_to_cpu(vc_msg->num_tx_q) != num_tx_q ||
+ le16_to_cpu(vc_msg->num_rx_q) != num_rx_q ||
+ le16_to_cpu(vc_msg->num_tx_complq) != num_complq ||
+ le16_to_cpu(vc_msg->num_rx_bufq) != num_rx_bufq) {
+ err = -EINVAL;
+ goto rel_lock;
+ }
+
+ size = struct_size(vc_msg, chunks.chunks,
+ le16_to_cpu(vc_msg->chunks.num_chunks));
+ vport_config->req_qs_chunks = kmemdup(vc_msg, size, GFP_KERNEL);
+ if (!vport_config->req_qs_chunks) {
+ err = -ENOMEM;
+ goto rel_lock;
+ }
+
+rel_lock:
+ mutex_unlock(&((struct idpf_vport *)vport)->vc_buf_lock);
+
+ return err;
+}
+
+/**
+ * idpf_send_alloc_vectors_msg - Send virtchnl alloc vectors message
+ * @adapter: Driver specific private structure
+ * @num_vectors: number of vectors to be allocated
+ *
+ * Returns 0 on success, negative on failure.
+ */
+int idpf_send_alloc_vectors_msg(struct idpf_adapter *adapter, u16 num_vectors)
+{
+ struct virtchnl2_alloc_vectors *alloc_vec, *rcvd_vec;
+ struct virtchnl2_alloc_vectors ac = { };
+ u16 num_vchunks;
+ int size, err;
+
+ ac.num_vectors = cpu_to_le16(num_vectors);
+
+ mutex_lock(&adapter->vc_buf_lock);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_ALLOC_VECTORS,
+ sizeof(ac), (u8 *)&ac);
+ if (err)
+ goto rel_lock;
+
+ err = idpf_wait_for_event(adapter, NULL, IDPF_VC_ALLOC_VECTORS,
+ IDPF_VC_ALLOC_VECTORS_ERR);
+ if (err)
+ goto rel_lock;
+
+ rcvd_vec = (struct virtchnl2_alloc_vectors *)adapter->vc_msg;
+ num_vchunks = le16_to_cpu(rcvd_vec->vchunks.num_vchunks);
+
+ size = struct_size(rcvd_vec, vchunks.vchunks, num_vchunks);
+ if (size > sizeof(adapter->vc_msg)) {
+ err = -EINVAL;
+ goto rel_lock;
+ }
+
+ kfree(adapter->req_vec_chunks);
+ adapter->req_vec_chunks = NULL;
+ adapter->req_vec_chunks = kmemdup(adapter->vc_msg, size, GFP_KERNEL);
+ if (!adapter->req_vec_chunks) {
+ err = -ENOMEM;
+ goto rel_lock;
+ }
+
+ alloc_vec = adapter->req_vec_chunks;
+ if (le16_to_cpu(alloc_vec->num_vectors) < num_vectors) {
+ kfree(adapter->req_vec_chunks);
+ adapter->req_vec_chunks = NULL;
+ err = -EINVAL;
+ }
+
+rel_lock:
+ mutex_unlock(&adapter->vc_buf_lock);
+
+ return err;
+}
+
+/**
+ * idpf_send_dealloc_vectors_msg - Send virtchnl de allocate vectors message
+ * @adapter: Driver specific private structure
+ *
+ * Returns 0 on success, negative on failure.
+ */
+int idpf_send_dealloc_vectors_msg(struct idpf_adapter *adapter)
+{
+ struct virtchnl2_alloc_vectors *ac = adapter->req_vec_chunks;
+ struct virtchnl2_vector_chunks *vcs = &ac->vchunks;
+ int buf_size, err;
+
+ buf_size = struct_size(vcs, vchunks, le16_to_cpu(vcs->num_vchunks));
+
+ mutex_lock(&adapter->vc_buf_lock);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_DEALLOC_VECTORS, buf_size,
+ (u8 *)vcs);
+ if (err)
+ goto rel_lock;
+
+ err = idpf_min_wait_for_event(adapter, NULL, IDPF_VC_DEALLOC_VECTORS,
+ IDPF_VC_DEALLOC_VECTORS_ERR);
+ if (err)
+ goto rel_lock;
+
+ kfree(adapter->req_vec_chunks);
+ adapter->req_vec_chunks = NULL;
+
+rel_lock:
+ mutex_unlock(&adapter->vc_buf_lock);
+
+ return err;
+}
+
+/**
+ * idpf_get_max_vfs - Get max number of vfs supported
+ * @adapter: Driver specific private structure
+ *
+ * Returns max number of VFs
+ */
+static int idpf_get_max_vfs(struct idpf_adapter *adapter)
+{
+ return le16_to_cpu(adapter->caps.max_sriov_vfs);
+}
+
+/**
+ * idpf_send_set_sriov_vfs_msg - Send virtchnl set sriov vfs message
+ * @adapter: Driver specific private structure
+ * @num_vfs: number of virtual functions to be created
+ *
+ * Returns 0 on success, negative on failure.
+ */
+int idpf_send_set_sriov_vfs_msg(struct idpf_adapter *adapter, u16 num_vfs)
+{
+ struct virtchnl2_sriov_vfs_info svi = { };
+ int err;
+
+ svi.num_vfs = cpu_to_le16(num_vfs);
+
+ mutex_lock(&adapter->vc_buf_lock);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_SET_SRIOV_VFS,
+ sizeof(svi), (u8 *)&svi);
+ if (err)
+ goto rel_lock;
+
+ err = idpf_wait_for_event(adapter, NULL, IDPF_VC_SET_SRIOV_VFS,
+ IDPF_VC_SET_SRIOV_VFS_ERR);
+
+rel_lock:
+ mutex_unlock(&adapter->vc_buf_lock);
+
+ return err;
+}
+
+/**
+ * idpf_send_get_stats_msg - Send virtchnl get statistics message
+ * @vport: vport to get stats for
+ *
+ * Returns 0 on success, negative on failure.
+ */
+int idpf_send_get_stats_msg(struct idpf_vport *vport)
+{
+ struct idpf_netdev_priv *np = netdev_priv(vport->netdev);
+ struct rtnl_link_stats64 *netstats = &np->netstats;
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_vport_stats stats_msg = { };
+ struct virtchnl2_vport_stats *stats;
+ int err;
+
+ /* Don't send get_stats message if the link is down */
+ if (np->state <= __IDPF_VPORT_DOWN)
+ return 0;
+
+ stats_msg.vport_id = cpu_to_le32(vport->vport_id);
+
+ mutex_lock(&vport->vc_buf_lock);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_GET_STATS,
+ sizeof(struct virtchnl2_vport_stats),
+ (u8 *)&stats_msg);
+ if (err)
+ goto rel_lock;
+
+ err = idpf_wait_for_event(adapter, vport, IDPF_VC_GET_STATS,
+ IDPF_VC_GET_STATS_ERR);
+ if (err)
+ goto rel_lock;
+
+ stats = (struct virtchnl2_vport_stats *)vport->vc_msg;
+
+ spin_lock_bh(&np->stats_lock);
+
+ netstats->rx_packets = le64_to_cpu(stats->rx_unicast) +
+ le64_to_cpu(stats->rx_multicast) +
+ le64_to_cpu(stats->rx_broadcast);
+ netstats->rx_bytes = le64_to_cpu(stats->rx_bytes);
+ netstats->rx_dropped = le64_to_cpu(stats->rx_discards);
+ netstats->rx_over_errors = le64_to_cpu(stats->rx_overflow_drop);
+ netstats->rx_length_errors = le64_to_cpu(stats->rx_invalid_frame_length);
+
+ netstats->tx_packets = le64_to_cpu(stats->tx_unicast) +
+ le64_to_cpu(stats->tx_multicast) +
+ le64_to_cpu(stats->tx_broadcast);
+ netstats->tx_bytes = le64_to_cpu(stats->tx_bytes);
+ netstats->tx_errors = le64_to_cpu(stats->tx_errors);
+ netstats->tx_dropped = le64_to_cpu(stats->tx_discards);
+
+ vport->port_stats.vport_stats = *stats;
+
+ spin_unlock_bh(&np->stats_lock);
+
+rel_lock:
+ mutex_unlock(&vport->vc_buf_lock);
+
+ return err;
+}
+
+/**
+ * idpf_send_get_set_rss_lut_msg - Send virtchnl get or set rss lut message
+ * @vport: virtual port data structure
+ * @get: flag to set or get rss look up table
+ *
+ * Returns 0 on success, negative on failure.
+ */
+int idpf_send_get_set_rss_lut_msg(struct idpf_vport *vport, bool get)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_rss_lut *recv_rl;
+ struct idpf_rss_data *rss_data;
+ struct virtchnl2_rss_lut *rl;
+ int buf_size, lut_buf_size;
+ int i, err;
+
+ rss_data = &adapter->vport_config[vport->idx]->user_config.rss_data;
+ buf_size = struct_size(rl, lut, rss_data->rss_lut_size);
+ rl = kzalloc(buf_size, GFP_KERNEL);
+ if (!rl)
+ return -ENOMEM;
+
+ rl->vport_id = cpu_to_le32(vport->vport_id);
+ mutex_lock(&vport->vc_buf_lock);
+
+ if (!get) {
+ rl->lut_entries = cpu_to_le16(rss_data->rss_lut_size);
+ for (i = 0; i < rss_data->rss_lut_size; i++)
+ rl->lut[i] = cpu_to_le32(rss_data->rss_lut[i]);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_SET_RSS_LUT,
+ buf_size, (u8 *)rl);
+ if (err)
+ goto free_mem;
+
+ err = idpf_wait_for_event(adapter, vport, IDPF_VC_SET_RSS_LUT,
+ IDPF_VC_SET_RSS_LUT_ERR);
+
+ goto free_mem;
+ }
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_GET_RSS_LUT,
+ buf_size, (u8 *)rl);
+ if (err)
+ goto free_mem;
+
+ err = idpf_wait_for_event(adapter, vport, IDPF_VC_GET_RSS_LUT,
+ IDPF_VC_GET_RSS_LUT_ERR);
+ if (err)
+ goto free_mem;
+
+ recv_rl = (struct virtchnl2_rss_lut *)vport->vc_msg;
+ if (rss_data->rss_lut_size == le16_to_cpu(recv_rl->lut_entries))
+ goto do_memcpy;
+
+ rss_data->rss_lut_size = le16_to_cpu(recv_rl->lut_entries);
+ kfree(rss_data->rss_lut);
+
+ lut_buf_size = rss_data->rss_lut_size * sizeof(u32);
+ rss_data->rss_lut = kzalloc(lut_buf_size, GFP_KERNEL);
+ if (!rss_data->rss_lut) {
+ rss_data->rss_lut_size = 0;
+ err = -ENOMEM;
+ goto free_mem;
+ }
+
+do_memcpy:
+ memcpy(rss_data->rss_lut, vport->vc_msg, rss_data->rss_lut_size);
+free_mem:
+ mutex_unlock(&vport->vc_buf_lock);
+ kfree(rl);
+
+ return err;
+}
+
+/**
+ * idpf_send_get_set_rss_key_msg - Send virtchnl get or set rss key message
+ * @vport: virtual port data structure
+ * @get: flag to set or get rss look up table
+ *
+ * Returns 0 on success, negative on failure
+ */
+int idpf_send_get_set_rss_key_msg(struct idpf_vport *vport, bool get)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_rss_key *recv_rk;
+ struct idpf_rss_data *rss_data;
+ struct virtchnl2_rss_key *rk;
+ int i, buf_size, err;
+
+ rss_data = &adapter->vport_config[vport->idx]->user_config.rss_data;
+ buf_size = struct_size(rk, key_flex, rss_data->rss_key_size);
+ rk = kzalloc(buf_size, GFP_KERNEL);
+ if (!rk)
+ return -ENOMEM;
+
+ rk->vport_id = cpu_to_le32(vport->vport_id);
+ mutex_lock(&vport->vc_buf_lock);
+
+ if (get) {
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_GET_RSS_KEY,
+ buf_size, (u8 *)rk);
+ if (err)
+ goto error;
+
+ err = idpf_wait_for_event(adapter, vport, IDPF_VC_GET_RSS_KEY,
+ IDPF_VC_GET_RSS_KEY_ERR);
+ if (err)
+ goto error;
+
+ recv_rk = (struct virtchnl2_rss_key *)vport->vc_msg;
+ if (rss_data->rss_key_size !=
+ le16_to_cpu(recv_rk->key_len)) {
+ rss_data->rss_key_size =
+ min_t(u16, NETDEV_RSS_KEY_LEN,
+ le16_to_cpu(recv_rk->key_len));
+ kfree(rss_data->rss_key);
+ rss_data->rss_key = kzalloc(rss_data->rss_key_size,
+ GFP_KERNEL);
+ if (!rss_data->rss_key) {
+ rss_data->rss_key_size = 0;
+ err = -ENOMEM;
+ goto error;
+ }
+ }
+ memcpy(rss_data->rss_key, recv_rk->key_flex,
+ rss_data->rss_key_size);
+ } else {
+ rk->key_len = cpu_to_le16(rss_data->rss_key_size);
+ for (i = 0; i < rss_data->rss_key_size; i++)
+ rk->key_flex[i] = rss_data->rss_key[i];
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_SET_RSS_KEY,
+ buf_size, (u8 *)rk);
+ if (err)
+ goto error;
+
+ err = idpf_wait_for_event(adapter, vport, IDPF_VC_SET_RSS_KEY,
+ IDPF_VC_SET_RSS_KEY_ERR);
+ }
+
+error:
+ mutex_unlock(&vport->vc_buf_lock);
+ kfree(rk);
+
+ return err;
+}
+
+/**
+ * idpf_fill_ptype_lookup - Fill L3 specific fields in ptype lookup table
+ * @ptype: ptype lookup table
+ * @pstate: state machine for ptype lookup table
+ * @ipv4: ipv4 or ipv6
+ * @frag: fragmentation allowed
+ *
+ */
+static void idpf_fill_ptype_lookup(struct idpf_rx_ptype_decoded *ptype,
+ struct idpf_ptype_state *pstate,
+ bool ipv4, bool frag)
+{
+ if (!pstate->outer_ip || !pstate->outer_frag) {
+ ptype->outer_ip = IDPF_RX_PTYPE_OUTER_IP;
+ pstate->outer_ip = true;
+
+ if (ipv4)
+ ptype->outer_ip_ver = IDPF_RX_PTYPE_OUTER_IPV4;
+ else
+ ptype->outer_ip_ver = IDPF_RX_PTYPE_OUTER_IPV6;
+
+ if (frag) {
+ ptype->outer_frag = IDPF_RX_PTYPE_FRAG;
+ pstate->outer_frag = true;
+ }
+ } else {
+ ptype->tunnel_type = IDPF_RX_PTYPE_TUNNEL_IP_IP;
+ pstate->tunnel_state = IDPF_PTYPE_TUNNEL_IP;
+
+ if (ipv4)
+ ptype->tunnel_end_prot =
+ IDPF_RX_PTYPE_TUNNEL_END_IPV4;
+ else
+ ptype->tunnel_end_prot =
+ IDPF_RX_PTYPE_TUNNEL_END_IPV6;
+
+ if (frag)
+ ptype->tunnel_end_frag = IDPF_RX_PTYPE_FRAG;
+ }
+}
+
+/**
+ * idpf_send_get_rx_ptype_msg - Send virtchnl for ptype info
+ * @vport: virtual port data structure
+ *
+ * Returns 0 on success, negative on failure.
+ */
+int idpf_send_get_rx_ptype_msg(struct idpf_vport *vport)
+{
+ struct idpf_rx_ptype_decoded *ptype_lkup = vport->rx_ptype_lkup;
+ struct virtchnl2_get_ptype_info get_ptype_info;
+ int max_ptype, ptypes_recvd = 0, ptype_offset;
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_get_ptype_info *ptype_info;
+ u16 next_ptype_id = 0;
+ int err = 0, i, j, k;
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ max_ptype = IDPF_RX_MAX_PTYPE;
+ else
+ max_ptype = IDPF_RX_MAX_BASE_PTYPE;
+
+ memset(vport->rx_ptype_lkup, 0, sizeof(vport->rx_ptype_lkup));
+
+ ptype_info = kzalloc(IDPF_CTLQ_MAX_BUF_LEN, GFP_KERNEL);
+ if (!ptype_info)
+ return -ENOMEM;
+
+ mutex_lock(&adapter->vc_buf_lock);
+
+ while (next_ptype_id < max_ptype) {
+ get_ptype_info.start_ptype_id = cpu_to_le16(next_ptype_id);
+
+ if ((next_ptype_id + IDPF_RX_MAX_PTYPES_PER_BUF) > max_ptype)
+ get_ptype_info.num_ptypes =
+ cpu_to_le16(max_ptype - next_ptype_id);
+ else
+ get_ptype_info.num_ptypes =
+ cpu_to_le16(IDPF_RX_MAX_PTYPES_PER_BUF);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_GET_PTYPE_INFO,
+ sizeof(struct virtchnl2_get_ptype_info),
+ (u8 *)&get_ptype_info);
+ if (err)
+ goto vc_buf_unlock;
+
+ err = idpf_wait_for_event(adapter, NULL, IDPF_VC_GET_PTYPE_INFO,
+ IDPF_VC_GET_PTYPE_INFO_ERR);
+ if (err)
+ goto vc_buf_unlock;
+
+ memcpy(ptype_info, adapter->vc_msg, IDPF_CTLQ_MAX_BUF_LEN);
+
+ ptypes_recvd += le16_to_cpu(ptype_info->num_ptypes);
+ if (ptypes_recvd > max_ptype) {
+ err = -EINVAL;
+ goto vc_buf_unlock;
+ }
+
+ next_ptype_id = le16_to_cpu(get_ptype_info.start_ptype_id) +
+ le16_to_cpu(get_ptype_info.num_ptypes);
+
+ ptype_offset = IDPF_RX_PTYPE_HDR_SZ;
+
+ for (i = 0; i < le16_to_cpu(ptype_info->num_ptypes); i++) {
+ struct idpf_ptype_state pstate = { };
+ struct virtchnl2_ptype *ptype;
+ u16 id;
+
+ ptype = (struct virtchnl2_ptype *)
+ ((u8 *)ptype_info + ptype_offset);
+
+ ptype_offset += IDPF_GET_PTYPE_SIZE(ptype);
+ if (ptype_offset > IDPF_CTLQ_MAX_BUF_LEN) {
+ err = -EINVAL;
+ goto vc_buf_unlock;
+ }
+
+ /* 0xFFFF indicates end of ptypes */
+ if (le16_to_cpu(ptype->ptype_id_10) ==
+ IDPF_INVALID_PTYPE_ID) {
+ err = 0;
+ goto vc_buf_unlock;
+ }
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ k = le16_to_cpu(ptype->ptype_id_10);
+ else
+ k = ptype->ptype_id_8;
+
+ if (ptype->proto_id_count)
+ ptype_lkup[k].known = 1;
+
+ for (j = 0; j < ptype->proto_id_count; j++) {
+ id = le16_to_cpu(ptype->proto_id[j]);
+ switch (id) {
+ case VIRTCHNL2_PROTO_HDR_GRE:
+ if (pstate.tunnel_state ==
+ IDPF_PTYPE_TUNNEL_IP) {
+ ptype_lkup[k].tunnel_type =
+ IDPF_RX_PTYPE_TUNNEL_IP_GRENAT;
+ pstate.tunnel_state |=
+ IDPF_PTYPE_TUNNEL_IP_GRENAT;
+ }
+ break;
+ case VIRTCHNL2_PROTO_HDR_MAC:
+ ptype_lkup[k].outer_ip =
+ IDPF_RX_PTYPE_OUTER_L2;
+ if (pstate.tunnel_state ==
+ IDPF_TUN_IP_GRE) {
+ ptype_lkup[k].tunnel_type =
+ IDPF_RX_PTYPE_TUNNEL_IP_GRENAT_MAC;
+ pstate.tunnel_state |=
+ IDPF_PTYPE_TUNNEL_IP_GRENAT_MAC;
+ }
+ break;
+ case VIRTCHNL2_PROTO_HDR_IPV4:
+ idpf_fill_ptype_lookup(&ptype_lkup[k],
+ &pstate, true,
+ false);
+ break;
+ case VIRTCHNL2_PROTO_HDR_IPV6:
+ idpf_fill_ptype_lookup(&ptype_lkup[k],
+ &pstate, false,
+ false);
+ break;
+ case VIRTCHNL2_PROTO_HDR_IPV4_FRAG:
+ idpf_fill_ptype_lookup(&ptype_lkup[k],
+ &pstate, true,
+ true);
+ break;
+ case VIRTCHNL2_PROTO_HDR_IPV6_FRAG:
+ idpf_fill_ptype_lookup(&ptype_lkup[k],
+ &pstate, false,
+ true);
+ break;
+ case VIRTCHNL2_PROTO_HDR_UDP:
+ ptype_lkup[k].inner_prot =
+ IDPF_RX_PTYPE_INNER_PROT_UDP;
+ break;
+ case VIRTCHNL2_PROTO_HDR_TCP:
+ ptype_lkup[k].inner_prot =
+ IDPF_RX_PTYPE_INNER_PROT_TCP;
+ break;
+ case VIRTCHNL2_PROTO_HDR_SCTP:
+ ptype_lkup[k].inner_prot =
+ IDPF_RX_PTYPE_INNER_PROT_SCTP;
+ break;
+ case VIRTCHNL2_PROTO_HDR_ICMP:
+ ptype_lkup[k].inner_prot =
+ IDPF_RX_PTYPE_INNER_PROT_ICMP;
+ break;
+ case VIRTCHNL2_PROTO_HDR_PAY:
+ ptype_lkup[k].payload_layer =
+ IDPF_RX_PTYPE_PAYLOAD_LAYER_PAY2;
+ break;
+ case VIRTCHNL2_PROTO_HDR_ICMPV6:
+ case VIRTCHNL2_PROTO_HDR_IPV6_EH:
+ case VIRTCHNL2_PROTO_HDR_PRE_MAC:
+ case VIRTCHNL2_PROTO_HDR_POST_MAC:
+ case VIRTCHNL2_PROTO_HDR_ETHERTYPE:
+ case VIRTCHNL2_PROTO_HDR_SVLAN:
+ case VIRTCHNL2_PROTO_HDR_CVLAN:
+ case VIRTCHNL2_PROTO_HDR_MPLS:
+ case VIRTCHNL2_PROTO_HDR_MMPLS:
+ case VIRTCHNL2_PROTO_HDR_PTP:
+ case VIRTCHNL2_PROTO_HDR_CTRL:
+ case VIRTCHNL2_PROTO_HDR_LLDP:
+ case VIRTCHNL2_PROTO_HDR_ARP:
+ case VIRTCHNL2_PROTO_HDR_ECP:
+ case VIRTCHNL2_PROTO_HDR_EAPOL:
+ case VIRTCHNL2_PROTO_HDR_PPPOD:
+ case VIRTCHNL2_PROTO_HDR_PPPOE:
+ case VIRTCHNL2_PROTO_HDR_IGMP:
+ case VIRTCHNL2_PROTO_HDR_AH:
+ case VIRTCHNL2_PROTO_HDR_ESP:
+ case VIRTCHNL2_PROTO_HDR_IKE:
+ case VIRTCHNL2_PROTO_HDR_NATT_KEEP:
+ case VIRTCHNL2_PROTO_HDR_L2TPV2:
+ case VIRTCHNL2_PROTO_HDR_L2TPV2_CONTROL:
+ case VIRTCHNL2_PROTO_HDR_L2TPV3:
+ case VIRTCHNL2_PROTO_HDR_GTP:
+ case VIRTCHNL2_PROTO_HDR_GTP_EH:
+ case VIRTCHNL2_PROTO_HDR_GTPCV2:
+ case VIRTCHNL2_PROTO_HDR_GTPC_TEID:
+ case VIRTCHNL2_PROTO_HDR_GTPU:
+ case VIRTCHNL2_PROTO_HDR_GTPU_UL:
+ case VIRTCHNL2_PROTO_HDR_GTPU_DL:
+ case VIRTCHNL2_PROTO_HDR_ECPRI:
+ case VIRTCHNL2_PROTO_HDR_VRRP:
+ case VIRTCHNL2_PROTO_HDR_OSPF:
+ case VIRTCHNL2_PROTO_HDR_TUN:
+ case VIRTCHNL2_PROTO_HDR_NVGRE:
+ case VIRTCHNL2_PROTO_HDR_VXLAN:
+ case VIRTCHNL2_PROTO_HDR_VXLAN_GPE:
+ case VIRTCHNL2_PROTO_HDR_GENEVE:
+ case VIRTCHNL2_PROTO_HDR_NSH:
+ case VIRTCHNL2_PROTO_HDR_QUIC:
+ case VIRTCHNL2_PROTO_HDR_PFCP:
+ case VIRTCHNL2_PROTO_HDR_PFCP_NODE:
+ case VIRTCHNL2_PROTO_HDR_PFCP_SESSION:
+ case VIRTCHNL2_PROTO_HDR_RTP:
+ case VIRTCHNL2_PROTO_HDR_NO_PROTO:
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ }
+
+vc_buf_unlock:
+ mutex_unlock(&adapter->vc_buf_lock);
+ kfree(ptype_info);
+
+ return err;
+}
+
+/**
+ * idpf_send_ena_dis_loopback_msg - Send virtchnl enable/disable loopback
+ * message
+ * @vport: virtual port data structure
+ *
+ * Returns 0 on success, negative on failure.
+ */
+int idpf_send_ena_dis_loopback_msg(struct idpf_vport *vport)
+{
+ struct virtchnl2_loopback loopback;
+ int err;
+
+ loopback.vport_id = cpu_to_le32(vport->vport_id);
+ loopback.enable = idpf_is_feature_ena(vport, NETIF_F_LOOPBACK);
+
+ mutex_lock(&vport->vc_buf_lock);
+
+ err = idpf_send_mb_msg(vport->adapter, VIRTCHNL2_OP_LOOPBACK,
+ sizeof(loopback), (u8 *)&loopback);
+ if (err)
+ goto rel_lock;
+
+ err = idpf_wait_for_event(vport->adapter, vport,
+ IDPF_VC_LOOPBACK_STATE,
+ IDPF_VC_LOOPBACK_STATE_ERR);
+
+rel_lock:
+ mutex_unlock(&vport->vc_buf_lock);
+
+ return err;
+}
+
+/**
+ * idpf_find_ctlq - Given a type and id, find ctlq info
+ * @hw: hardware struct
+ * @type: type of ctrlq to find
+ * @id: ctlq id to find
+ *
+ * Returns pointer to found ctlq info struct, NULL otherwise.
+ */
+static struct idpf_ctlq_info *idpf_find_ctlq(struct idpf_hw *hw,
+ enum idpf_ctlq_type type, int id)
+{
+ struct idpf_ctlq_info *cq, *tmp;
+
+ list_for_each_entry_safe(cq, tmp, &hw->cq_list_head, cq_list)
+ if (cq->q_id == id && cq->cq_type == type)
+ return cq;
+
+ return NULL;
+}
+
+/**
+ * idpf_init_dflt_mbx - Setup default mailbox parameters and make request
+ * @adapter: adapter info struct
+ *
+ * Returns 0 on success, negative otherwise
+ */
+int idpf_init_dflt_mbx(struct idpf_adapter *adapter)
+{
+ struct idpf_ctlq_create_info ctlq_info[] = {
+ {
+ .type = IDPF_CTLQ_TYPE_MAILBOX_TX,
+ .id = IDPF_DFLT_MBX_ID,
+ .len = IDPF_DFLT_MBX_Q_LEN,
+ .buf_size = IDPF_CTLQ_MAX_BUF_LEN
+ },
+ {
+ .type = IDPF_CTLQ_TYPE_MAILBOX_RX,
+ .id = IDPF_DFLT_MBX_ID,
+ .len = IDPF_DFLT_MBX_Q_LEN,
+ .buf_size = IDPF_CTLQ_MAX_BUF_LEN
+ }
+ };
+ struct idpf_hw *hw = &adapter->hw;
+ int err;
+
+ adapter->dev_ops.reg_ops.ctlq_reg_init(ctlq_info);
+
+ err = idpf_ctlq_init(hw, IDPF_NUM_DFLT_MBX_Q, ctlq_info);
+ if (err)
+ return err;
+
+ hw->asq = idpf_find_ctlq(hw, IDPF_CTLQ_TYPE_MAILBOX_TX,
+ IDPF_DFLT_MBX_ID);
+ hw->arq = idpf_find_ctlq(hw, IDPF_CTLQ_TYPE_MAILBOX_RX,
+ IDPF_DFLT_MBX_ID);
+
+ if (!hw->asq || !hw->arq) {
+ idpf_ctlq_deinit(hw);
+
+ return -ENOENT;
+ }
+
+ adapter->state = __IDPF_STARTUP;
+
+ return 0;
+}
+
+/**
+ * idpf_deinit_dflt_mbx - Free up ctlqs setup
+ * @adapter: Driver specific private data structure
+ */
+void idpf_deinit_dflt_mbx(struct idpf_adapter *adapter)
+{
+ if (adapter->hw.arq && adapter->hw.asq) {
+ idpf_mb_clean(adapter);
+ idpf_ctlq_deinit(&adapter->hw);
+ }
+ adapter->hw.arq = NULL;
+ adapter->hw.asq = NULL;
+}
+
+/**
+ * idpf_vport_params_buf_rel - Release memory for MailBox resources
+ * @adapter: Driver specific private data structure
+ *
+ * Will release memory to hold the vport parameters received on MailBox
+ */
+static void idpf_vport_params_buf_rel(struct idpf_adapter *adapter)
+{
+ kfree(adapter->vport_params_recvd);
+ adapter->vport_params_recvd = NULL;
+ kfree(adapter->vport_params_reqd);
+ adapter->vport_params_reqd = NULL;
+ kfree(adapter->vport_ids);
+ adapter->vport_ids = NULL;
+}
+
+/**
+ * idpf_vport_params_buf_alloc - Allocate memory for MailBox resources
+ * @adapter: Driver specific private data structure
+ *
+ * Will alloc memory to hold the vport parameters received on MailBox
+ */
+static int idpf_vport_params_buf_alloc(struct idpf_adapter *adapter)
+{
+ u16 num_max_vports = idpf_get_max_vports(adapter);
+
+ adapter->vport_params_reqd = kcalloc(num_max_vports,
+ sizeof(*adapter->vport_params_reqd),
+ GFP_KERNEL);
+ if (!adapter->vport_params_reqd)
+ return -ENOMEM;
+
+ adapter->vport_params_recvd = kcalloc(num_max_vports,
+ sizeof(*adapter->vport_params_recvd),
+ GFP_KERNEL);
+ if (!adapter->vport_params_recvd)
+ goto err_mem;
+
+ adapter->vport_ids = kcalloc(num_max_vports, sizeof(u32), GFP_KERNEL);
+ if (!adapter->vport_ids)
+ goto err_mem;
+
+ if (adapter->vport_config)
+ return 0;
+
+ adapter->vport_config = kcalloc(num_max_vports,
+ sizeof(*adapter->vport_config),
+ GFP_KERNEL);
+ if (!adapter->vport_config)
+ goto err_mem;
+
+ return 0;
+
+err_mem:
+ idpf_vport_params_buf_rel(adapter);
+
+ return -ENOMEM;
+}
+
+/**
+ * idpf_vc_core_init - Initialize state machine and get driver specific
+ * resources
+ * @adapter: Driver specific private structure
+ *
+ * This function will initialize the state machine and request all necessary
+ * resources required by the device driver. Once the state machine is
+ * initialized, allocate memory to store vport specific information and also
+ * requests required interrupts.
+ *
+ * Returns 0 on success, -EAGAIN function will get called again,
+ * otherwise negative on failure.
+ */
+int idpf_vc_core_init(struct idpf_adapter *adapter)
+{
+ int task_delay = 30;
+ u16 num_max_vports;
+ int err = 0;
+
+ while (adapter->state != __IDPF_INIT_SW) {
+ switch (adapter->state) {
+ case __IDPF_STARTUP:
+ if (idpf_send_ver_msg(adapter))
+ goto init_failed;
+ adapter->state = __IDPF_VER_CHECK;
+ goto restart;
+ case __IDPF_VER_CHECK:
+ err = idpf_recv_ver_msg(adapter);
+ if (err == -EIO) {
+ return err;
+ } else if (err == -EAGAIN) {
+ adapter->state = __IDPF_STARTUP;
+ goto restart;
+ } else if (err) {
+ goto init_failed;
+ }
+ if (idpf_send_get_caps_msg(adapter))
+ goto init_failed;
+ adapter->state = __IDPF_GET_CAPS;
+ goto restart;
+ case __IDPF_GET_CAPS:
+ if (idpf_recv_get_caps_msg(adapter))
+ goto init_failed;
+ adapter->state = __IDPF_INIT_SW;
+ break;
+ default:
+ dev_err(&adapter->pdev->dev, "Device is in bad state: %d\n",
+ adapter->state);
+ goto init_failed;
+ }
+ break;
+restart:
+ /* Give enough time before proceeding further with
+ * state machine
+ */
+ msleep(task_delay);
+ }
+
+ pci_sriov_set_totalvfs(adapter->pdev, idpf_get_max_vfs(adapter));
+ num_max_vports = idpf_get_max_vports(adapter);
+ adapter->max_vports = num_max_vports;
+ adapter->vports = kcalloc(num_max_vports, sizeof(*adapter->vports),
+ GFP_KERNEL);
+ if (!adapter->vports)
+ return -ENOMEM;
+
+ if (!adapter->netdevs) {
+ adapter->netdevs = kcalloc(num_max_vports,
+ sizeof(struct net_device *),
+ GFP_KERNEL);
+ if (!adapter->netdevs) {
+ err = -ENOMEM;
+ goto err_netdev_alloc;
+ }
+ }
+
+ err = idpf_vport_params_buf_alloc(adapter);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "Failed to alloc vport params buffer: %d\n",
+ err);
+ goto err_netdev_alloc;
+ }
+
+ /* Start the mailbox task before requesting vectors. This will ensure
+ * vector information response from mailbox is handled
+ */
+ queue_delayed_work(adapter->mbx_wq, &adapter->mbx_task, 0);
+
+ queue_delayed_work(adapter->serv_wq, &adapter->serv_task,
+ msecs_to_jiffies(5 * (adapter->pdev->devfn & 0x07)));
+
+ err = idpf_intr_req(adapter);
+ if (err) {
+ dev_err(&adapter->pdev->dev, "failed to enable interrupt vectors: %d\n",
+ err);
+ goto err_intr_req;
+ }
+
+ idpf_init_avail_queues(adapter);
+
+ /* Skew the delay for init tasks for each function based on fn number
+ * to prevent every function from making the same call simultaneously.
+ */
+ queue_delayed_work(adapter->init_wq, &adapter->init_task,
+ msecs_to_jiffies(5 * (adapter->pdev->devfn & 0x07)));
+
+ goto no_err;
+
+err_intr_req:
+ cancel_delayed_work_sync(&adapter->serv_task);
+ cancel_delayed_work_sync(&adapter->mbx_task);
+ idpf_vport_params_buf_rel(adapter);
+err_netdev_alloc:
+ kfree(adapter->vports);
+ adapter->vports = NULL;
+no_err:
+ return err;
+
+init_failed:
+ /* Don't retry if we're trying to go down, just bail. */
+ if (test_bit(IDPF_REMOVE_IN_PROG, adapter->flags))
+ return err;
+
+ if (++adapter->mb_wait_count > IDPF_MB_MAX_ERR) {
+ dev_err(&adapter->pdev->dev, "Failed to establish mailbox communications with hardware\n");
+
+ return -EFAULT;
+ }
+ /* If it reached here, it is possible that mailbox queue initialization
+ * register writes might not have taken effect. Retry to initialize
+ * the mailbox again
+ */
+ adapter->state = __IDPF_STARTUP;
+ idpf_deinit_dflt_mbx(adapter);
+ set_bit(IDPF_HR_DRV_LOAD, adapter->flags);
+ queue_delayed_work(adapter->vc_event_wq, &adapter->vc_event_task,
+ msecs_to_jiffies(task_delay));
+
+ return -EAGAIN;
+}
+
+/**
+ * idpf_vc_core_deinit - Device deinit routine
+ * @adapter: Driver specific private structure
+ *
+ */
+void idpf_vc_core_deinit(struct idpf_adapter *adapter)
+{
+ int i;
+
+ idpf_deinit_task(adapter);
+ idpf_intr_rel(adapter);
+ /* Set all bits as we dont know on which vc_state the vhnl_wq is
+ * waiting on and wakeup the virtchnl workqueue even if it is waiting
+ * for the response as we are going down
+ */
+ for (i = 0; i < IDPF_VC_NBITS; i++)
+ set_bit(i, adapter->vc_state);
+ wake_up(&adapter->vchnl_wq);
+
+ cancel_delayed_work_sync(&adapter->serv_task);
+ cancel_delayed_work_sync(&adapter->mbx_task);
+
+ idpf_vport_params_buf_rel(adapter);
+
+ /* Clear all the bits */
+ for (i = 0; i < IDPF_VC_NBITS; i++)
+ clear_bit(i, adapter->vc_state);
+
+ kfree(adapter->vports);
+ adapter->vports = NULL;
+}
+
+/**
+ * idpf_vport_alloc_vec_indexes - Get relative vector indexes
+ * @vport: virtual port data struct
+ *
+ * This function requests the vector information required for the vport and
+ * stores the vector indexes received from the 'global vector distribution'
+ * in the vport's queue vectors array.
+ *
+ * Return 0 on success, error on failure
+ */
+int idpf_vport_alloc_vec_indexes(struct idpf_vport *vport)
+{
+ struct idpf_vector_info vec_info;
+ int num_alloc_vecs;
+
+ vec_info.num_curr_vecs = vport->num_q_vectors;
+ vec_info.num_req_vecs = max(vport->num_txq, vport->num_rxq);
+ vec_info.default_vport = vport->default_vport;
+ vec_info.index = vport->idx;
+
+ num_alloc_vecs = idpf_req_rel_vector_indexes(vport->adapter,
+ vport->q_vector_idxs,
+ &vec_info);
+ if (num_alloc_vecs <= 0) {
+ dev_err(&vport->adapter->pdev->dev, "Vector distribution failed: %d\n",
+ num_alloc_vecs);
+ return -EINVAL;
+ }
+
+ vport->num_q_vectors = num_alloc_vecs;
+
+ return 0;
+}
+
+/**
+ * idpf_vport_init - Initialize virtual port
+ * @vport: virtual port to be initialized
+ * @max_q: vport max queue info
+ *
+ * Will initialize vport with the info received through MB earlier
+ */
+void idpf_vport_init(struct idpf_vport *vport, struct idpf_vport_max_q *max_q)
+{
+ struct idpf_adapter *adapter = vport->adapter;
+ struct virtchnl2_create_vport *vport_msg;
+ struct idpf_vport_config *vport_config;
+ u16 tx_itr[] = {2, 8, 64, 128, 256};
+ u16 rx_itr[] = {2, 8, 32, 96, 128};
+ struct idpf_rss_data *rss_data;
+ u16 idx = vport->idx;
+
+ vport_config = adapter->vport_config[idx];
+ rss_data = &vport_config->user_config.rss_data;
+ vport_msg = adapter->vport_params_recvd[idx];
+
+ vport_config->max_q.max_txq = max_q->max_txq;
+ vport_config->max_q.max_rxq = max_q->max_rxq;
+ vport_config->max_q.max_complq = max_q->max_complq;
+ vport_config->max_q.max_bufq = max_q->max_bufq;
+
+ vport->txq_model = le16_to_cpu(vport_msg->txq_model);
+ vport->rxq_model = le16_to_cpu(vport_msg->rxq_model);
+ vport->vport_type = le16_to_cpu(vport_msg->vport_type);
+ vport->vport_id = le32_to_cpu(vport_msg->vport_id);
+
+ rss_data->rss_key_size = min_t(u16, NETDEV_RSS_KEY_LEN,
+ le16_to_cpu(vport_msg->rss_key_size));
+ rss_data->rss_lut_size = le16_to_cpu(vport_msg->rss_lut_size);
+
+ ether_addr_copy(vport->default_mac_addr, vport_msg->default_mac_addr);
+ vport->max_mtu = le16_to_cpu(vport_msg->max_mtu) - IDPF_PACKET_HDR_PAD;
+
+ /* Initialize Tx and Rx profiles for Dynamic Interrupt Moderation */
+ memcpy(vport->rx_itr_profile, rx_itr, IDPF_DIM_PROFILE_SLOTS);
+ memcpy(vport->tx_itr_profile, tx_itr, IDPF_DIM_PROFILE_SLOTS);
+
+ idpf_vport_init_num_qs(vport, vport_msg);
+ idpf_vport_calc_num_q_desc(vport);
+ idpf_vport_calc_num_q_groups(vport);
+ idpf_vport_alloc_vec_indexes(vport);
+
+ vport->crc_enable = adapter->crc_enable;
+}
+
+/**
+ * idpf_get_vec_ids - Initialize vector id from Mailbox parameters
+ * @adapter: adapter structure to get the mailbox vector id
+ * @vecids: Array of vector ids
+ * @num_vecids: number of vector ids
+ * @chunks: vector ids received over mailbox
+ *
+ * Will initialize the mailbox vector id which is received from the
+ * get capabilities and data queue vector ids with ids received as
+ * mailbox parameters.
+ * Returns number of ids filled
+ */
+int idpf_get_vec_ids(struct idpf_adapter *adapter,
+ u16 *vecids, int num_vecids,
+ struct virtchnl2_vector_chunks *chunks)
+{
+ u16 num_chunks = le16_to_cpu(chunks->num_vchunks);
+ int num_vecid_filled = 0;
+ int i, j;
+
+ vecids[num_vecid_filled] = adapter->mb_vector.v_idx;
+ num_vecid_filled++;
+
+ for (j = 0; j < num_chunks; j++) {
+ struct virtchnl2_vector_chunk *chunk;
+ u16 start_vecid, num_vec;
+
+ chunk = &chunks->vchunks[j];
+ num_vec = le16_to_cpu(chunk->num_vectors);
+ start_vecid = le16_to_cpu(chunk->start_vector_id);
+
+ for (i = 0; i < num_vec; i++) {
+ if ((num_vecid_filled + i) < num_vecids) {
+ vecids[num_vecid_filled + i] = start_vecid;
+ start_vecid++;
+ } else {
+ break;
+ }
+ }
+ num_vecid_filled = num_vecid_filled + i;
+ }
+
+ return num_vecid_filled;
+}
+
+/**
+ * idpf_vport_get_queue_ids - Initialize queue id from Mailbox parameters
+ * @qids: Array of queue ids
+ * @num_qids: number of queue ids
+ * @q_type: queue model
+ * @chunks: queue ids received over mailbox
+ *
+ * Will initialize all queue ids with ids received as mailbox parameters
+ * Returns number of ids filled
+ */
+static int idpf_vport_get_queue_ids(u32 *qids, int num_qids, u16 q_type,
+ struct virtchnl2_queue_reg_chunks *chunks)
+{
+ u16 num_chunks = le16_to_cpu(chunks->num_chunks);
+ u32 num_q_id_filled = 0, i;
+ u32 start_q_id, num_q;
+
+ while (num_chunks--) {
+ struct virtchnl2_queue_reg_chunk *chunk;
+
+ chunk = &chunks->chunks[num_chunks];
+ if (le32_to_cpu(chunk->type) != q_type)
+ continue;
+
+ num_q = le32_to_cpu(chunk->num_queues);
+ start_q_id = le32_to_cpu(chunk->start_queue_id);
+
+ for (i = 0; i < num_q; i++) {
+ if ((num_q_id_filled + i) < num_qids) {
+ qids[num_q_id_filled + i] = start_q_id;
+ start_q_id++;
+ } else {
+ break;
+ }
+ }
+ num_q_id_filled = num_q_id_filled + i;
+ }
+
+ return num_q_id_filled;
+}
+
+/**
+ * __idpf_vport_queue_ids_init - Initialize queue ids from Mailbox parameters
+ * @vport: virtual port for which the queues ids are initialized
+ * @qids: queue ids
+ * @num_qids: number of queue ids
+ * @q_type: type of queue
+ *
+ * Will initialize all queue ids with ids received as mailbox
+ * parameters. Returns number of queue ids initialized.
+ */
+static int __idpf_vport_queue_ids_init(struct idpf_vport *vport,
+ const u32 *qids,
+ int num_qids,
+ u32 q_type)
+{
+ struct idpf_queue *q;
+ int i, j, k = 0;
+
+ switch (q_type) {
+ case VIRTCHNL2_QUEUE_TYPE_TX:
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct idpf_txq_group *tx_qgrp = &vport->txq_grps[i];
+
+ for (j = 0; j < tx_qgrp->num_txq && k < num_qids; j++, k++) {
+ tx_qgrp->txqs[j]->q_id = qids[k];
+ tx_qgrp->txqs[j]->q_type =
+ VIRTCHNL2_QUEUE_TYPE_TX;
+ }
+ }
+ break;
+ case VIRTCHNL2_QUEUE_TYPE_RX:
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+ u16 num_rxq;
+
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ num_rxq = rx_qgrp->splitq.num_rxq_sets;
+ else
+ num_rxq = rx_qgrp->singleq.num_rxq;
+
+ for (j = 0; j < num_rxq && k < num_qids; j++, k++) {
+ if (idpf_is_queue_model_split(vport->rxq_model))
+ q = &rx_qgrp->splitq.rxq_sets[j]->rxq;
+ else
+ q = rx_qgrp->singleq.rxqs[j];
+ q->q_id = qids[k];
+ q->q_type = VIRTCHNL2_QUEUE_TYPE_RX;
+ }
+ }
+ break;
+ case VIRTCHNL2_QUEUE_TYPE_TX_COMPLETION:
+ for (i = 0; i < vport->num_txq_grp && k < num_qids; i++, k++) {
+ struct idpf_txq_group *tx_qgrp = &vport->txq_grps[i];
+
+ tx_qgrp->complq->q_id = qids[k];
+ tx_qgrp->complq->q_type =
+ VIRTCHNL2_QUEUE_TYPE_TX_COMPLETION;
+ }
+ break;
+ case VIRTCHNL2_QUEUE_TYPE_RX_BUFFER:
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct idpf_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+ u8 num_bufqs = vport->num_bufqs_per_qgrp;
+
+ for (j = 0; j < num_bufqs && k < num_qids; j++, k++) {
+ q = &rx_qgrp->splitq.bufq_sets[j].bufq;
+ q->q_id = qids[k];
+ q->q_type = VIRTCHNL2_QUEUE_TYPE_RX_BUFFER;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ return k;
+}
+
+/**
+ * idpf_vport_queue_ids_init - Initialize queue ids from Mailbox parameters
+ * @vport: virtual port for which the queues ids are initialized
+ *
+ * Will initialize all queue ids with ids received as mailbox parameters.
+ * Returns 0 on success, negative if all the queues are not initialized.
+ */
+int idpf_vport_queue_ids_init(struct idpf_vport *vport)
+{
+ struct virtchnl2_create_vport *vport_params;
+ struct virtchnl2_queue_reg_chunks *chunks;
+ struct idpf_vport_config *vport_config;
+ u16 vport_idx = vport->idx;
+ int num_ids, err = 0;
+ u16 q_type;
+ u32 *qids;
+
+ vport_config = vport->adapter->vport_config[vport_idx];
+ if (vport_config->req_qs_chunks) {
+ struct virtchnl2_add_queues *vc_aq =
+ (struct virtchnl2_add_queues *)vport_config->req_qs_chunks;
+ chunks = &vc_aq->chunks;
+ } else {
+ vport_params = vport->adapter->vport_params_recvd[vport_idx];
+ chunks = &vport_params->chunks;
+ }
+
+ qids = kcalloc(IDPF_MAX_QIDS, sizeof(u32), GFP_KERNEL);
+ if (!qids)
+ return -ENOMEM;
+
+ num_ids = idpf_vport_get_queue_ids(qids, IDPF_MAX_QIDS,
+ VIRTCHNL2_QUEUE_TYPE_TX,
+ chunks);
+ if (num_ids < vport->num_txq) {
+ err = -EINVAL;
+ goto mem_rel;
+ }
+ num_ids = __idpf_vport_queue_ids_init(vport, qids, num_ids,
+ VIRTCHNL2_QUEUE_TYPE_TX);
+ if (num_ids < vport->num_txq) {
+ err = -EINVAL;
+ goto mem_rel;
+ }
+
+ num_ids = idpf_vport_get_queue_ids(qids, IDPF_MAX_QIDS,
+ VIRTCHNL2_QUEUE_TYPE_RX,
+ chunks);
+ if (num_ids < vport->num_rxq) {
+ err = -EINVAL;
+ goto mem_rel;
+ }
+ num_ids = __idpf_vport_queue_ids_init(vport, qids, num_ids,
+ VIRTCHNL2_QUEUE_TYPE_RX);
+ if (num_ids < vport->num_rxq) {
+ err = -EINVAL;
+ goto mem_rel;
+ }
+
+ if (!idpf_is_queue_model_split(vport->txq_model))
+ goto check_rxq;
+
+ q_type = VIRTCHNL2_QUEUE_TYPE_TX_COMPLETION;
+ num_ids = idpf_vport_get_queue_ids(qids, IDPF_MAX_QIDS, q_type, chunks);
+ if (num_ids < vport->num_complq) {
+ err = -EINVAL;
+ goto mem_rel;
+ }
+ num_ids = __idpf_vport_queue_ids_init(vport, qids, num_ids, q_type);
+ if (num_ids < vport->num_complq) {
+ err = -EINVAL;
+ goto mem_rel;
+ }
+
+check_rxq:
+ if (!idpf_is_queue_model_split(vport->rxq_model))
+ goto mem_rel;
+
+ q_type = VIRTCHNL2_QUEUE_TYPE_RX_BUFFER;
+ num_ids = idpf_vport_get_queue_ids(qids, IDPF_MAX_QIDS, q_type, chunks);
+ if (num_ids < vport->num_bufq) {
+ err = -EINVAL;
+ goto mem_rel;
+ }
+ num_ids = __idpf_vport_queue_ids_init(vport, qids, num_ids, q_type);
+ if (num_ids < vport->num_bufq)
+ err = -EINVAL;
+
+mem_rel:
+ kfree(qids);
+
+ return err;
+}
+
+/**
+ * idpf_vport_adjust_qs - Adjust to new requested queues
+ * @vport: virtual port data struct
+ *
+ * Renegotiate queues. Returns 0 on success, negative on failure.
+ */
+int idpf_vport_adjust_qs(struct idpf_vport *vport)
+{
+ struct virtchnl2_create_vport vport_msg;
+ int err;
+
+ vport_msg.txq_model = cpu_to_le16(vport->txq_model);
+ vport_msg.rxq_model = cpu_to_le16(vport->rxq_model);
+ err = idpf_vport_calc_total_qs(vport->adapter, vport->idx, &vport_msg,
+ NULL);
+ if (err)
+ return err;
+
+ idpf_vport_init_num_qs(vport, &vport_msg);
+ idpf_vport_calc_num_q_groups(vport);
+
+ return 0;
+}
+
+/**
+ * idpf_is_capability_ena - Default implementation of capability checking
+ * @adapter: Private data struct
+ * @all: all or one flag
+ * @field: caps field to check for flags
+ * @flag: flag to check
+ *
+ * Return true if all capabilities are supported, false otherwise
+ */
+bool idpf_is_capability_ena(struct idpf_adapter *adapter, bool all,
+ enum idpf_cap_field field, u64 flag)
+{
+ u8 *caps = (u8 *)&adapter->caps;
+ u32 *cap_field;
+
+ if (!caps)
+ return false;
+
+ if (field == IDPF_BASE_CAPS)
+ return false;
+
+ cap_field = (u32 *)(caps + field);
+
+ if (all)
+ return (*cap_field & flag) == flag;
+ else
+ return !!(*cap_field & flag);
+}
+
+/**
+ * idpf_get_vport_id: Get vport id
+ * @vport: virtual port structure
+ *
+ * Return vport id from the adapter persistent data
+ */
+u32 idpf_get_vport_id(struct idpf_vport *vport)
+{
+ struct virtchnl2_create_vport *vport_msg;
+
+ vport_msg = vport->adapter->vport_params_recvd[vport->idx];
+
+ return le32_to_cpu(vport_msg->vport_id);
+}
+
+/**
+ * idpf_add_del_mac_filters - Add/del mac filters
+ * @vport: Virtual port data structure
+ * @np: Netdev private structure
+ * @add: Add or delete flag
+ * @async: Don't wait for return message
+ *
+ * Returns 0 on success, error on failure.
+ **/
+int idpf_add_del_mac_filters(struct idpf_vport *vport,
+ struct idpf_netdev_priv *np,
+ bool add, bool async)
+{
+ struct virtchnl2_mac_addr_list *ma_list = NULL;
+ struct idpf_adapter *adapter = np->adapter;
+ struct idpf_vport_config *vport_config;
+ enum idpf_vport_config_flags mac_flag;
+ struct pci_dev *pdev = adapter->pdev;
+ enum idpf_vport_vc_state vc, vc_err;
+ struct virtchnl2_mac_addr *mac_addr;
+ struct idpf_mac_filter *f, *tmp;
+ u32 num_msgs, total_filters = 0;
+ int i = 0, k, err = 0;
+ u32 vop;
+
+ vport_config = adapter->vport_config[np->vport_idx];
+ spin_lock_bh(&vport_config->mac_filter_list_lock);
+
+ /* Find the number of newly added filters */
+ list_for_each_entry(f, &vport_config->user_config.mac_filter_list,
+ list) {
+ if (add && f->add)
+ total_filters++;
+ else if (!add && f->remove)
+ total_filters++;
+ }
+
+ if (!total_filters) {
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+
+ return 0;
+ }
+
+ /* Fill all the new filters into virtchannel message */
+ mac_addr = kcalloc(total_filters, sizeof(struct virtchnl2_mac_addr),
+ GFP_ATOMIC);
+ if (!mac_addr) {
+ err = -ENOMEM;
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+ goto error;
+ }
+
+ list_for_each_entry_safe(f, tmp, &vport_config->user_config.mac_filter_list,
+ list) {
+ if (add && f->add) {
+ ether_addr_copy(mac_addr[i].addr, f->macaddr);
+ i++;
+ f->add = false;
+ if (i == total_filters)
+ break;
+ }
+ if (!add && f->remove) {
+ ether_addr_copy(mac_addr[i].addr, f->macaddr);
+ i++;
+ f->remove = false;
+ if (i == total_filters)
+ break;
+ }
+ }
+
+ spin_unlock_bh(&vport_config->mac_filter_list_lock);
+
+ if (add) {
+ vop = VIRTCHNL2_OP_ADD_MAC_ADDR;
+ vc = IDPF_VC_ADD_MAC_ADDR;
+ vc_err = IDPF_VC_ADD_MAC_ADDR_ERR;
+ mac_flag = IDPF_VPORT_ADD_MAC_REQ;
+ } else {
+ vop = VIRTCHNL2_OP_DEL_MAC_ADDR;
+ vc = IDPF_VC_DEL_MAC_ADDR;
+ vc_err = IDPF_VC_DEL_MAC_ADDR_ERR;
+ mac_flag = IDPF_VPORT_DEL_MAC_REQ;
+ }
+
+ /* Chunk up the filters into multiple messages to avoid
+ * sending a control queue message buffer that is too large
+ */
+ num_msgs = DIV_ROUND_UP(total_filters, IDPF_NUM_FILTERS_PER_MSG);
+
+ if (!async)
+ mutex_lock(&vport->vc_buf_lock);
+
+ for (i = 0, k = 0; i < num_msgs; i++) {
+ u32 entries_size, buf_size, num_entries;
+
+ num_entries = min_t(u32, total_filters,
+ IDPF_NUM_FILTERS_PER_MSG);
+ entries_size = sizeof(struct virtchnl2_mac_addr) * num_entries;
+ buf_size = struct_size(ma_list, mac_addr_list, num_entries);
+
+ if (!ma_list || num_entries != IDPF_NUM_FILTERS_PER_MSG) {
+ kfree(ma_list);
+ ma_list = kzalloc(buf_size, GFP_ATOMIC);
+ if (!ma_list) {
+ err = -ENOMEM;
+ goto list_prep_error;
+ }
+ } else {
+ memset(ma_list, 0, buf_size);
+ }
+
+ ma_list->vport_id = cpu_to_le32(np->vport_id);
+ ma_list->num_mac_addr = cpu_to_le16(num_entries);
+ memcpy(ma_list->mac_addr_list, &mac_addr[k], entries_size);
+
+ if (async)
+ set_bit(mac_flag, vport_config->flags);
+
+ err = idpf_send_mb_msg(adapter, vop, buf_size, (u8 *)ma_list);
+ if (err)
+ goto mbx_error;
+
+ if (!async) {
+ err = idpf_wait_for_event(adapter, vport, vc, vc_err);
+ if (err)
+ goto mbx_error;
+ }
+
+ k += num_entries;
+ total_filters -= num_entries;
+ }
+
+mbx_error:
+ if (!async)
+ mutex_unlock(&vport->vc_buf_lock);
+ kfree(ma_list);
+list_prep_error:
+ kfree(mac_addr);
+error:
+ if (err)
+ dev_err(&pdev->dev, "Failed to add or del mac filters %d", err);
+
+ return err;
+}
+
+/**
+ * idpf_set_promiscuous - set promiscuous and send message to mailbox
+ * @adapter: Driver specific private structure
+ * @config_data: Vport specific config data
+ * @vport_id: Vport identifier
+ *
+ * Request to enable promiscuous mode for the vport. Message is sent
+ * asynchronously and won't wait for response. Returns 0 on success, negative
+ * on failure;
+ */
+int idpf_set_promiscuous(struct idpf_adapter *adapter,
+ struct idpf_vport_user_config_data *config_data,
+ u32 vport_id)
+{
+ struct virtchnl2_promisc_info vpi;
+ u16 flags = 0;
+ int err;
+
+ if (test_bit(__IDPF_PROMISC_UC, config_data->user_flags))
+ flags |= VIRTCHNL2_UNICAST_PROMISC;
+ if (test_bit(__IDPF_PROMISC_MC, config_data->user_flags))
+ flags |= VIRTCHNL2_MULTICAST_PROMISC;
+
+ vpi.vport_id = cpu_to_le32(vport_id);
+ vpi.flags = cpu_to_le16(flags);
+
+ err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_CONFIG_PROMISCUOUS_MODE,
+ sizeof(struct virtchnl2_promisc_info),
+ (u8 *)&vpi);
+
+ return err;
+}
diff --git a/drivers/net/ethernet/intel/idpf/virtchnl2.h b/drivers/net/ethernet/intel/idpf/virtchnl2.h
new file mode 100644
index 0000000..07e72c7
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/virtchnl2.h
@@ -0,0 +1,1273 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _VIRTCHNL2_H_
+#define _VIRTCHNL2_H_
+
+/* All opcodes associated with virtchnl2 are prefixed with virtchnl2 or
+ * VIRTCHNL2. Any future opcodes, offloads/capabilities, structures,
+ * and defines must be prefixed with virtchnl2 or VIRTCHNL2 to avoid confusion.
+ *
+ * PF/VF uses the virtchnl2 interface defined in this header file to communicate
+ * with device Control Plane (CP). Driver and the CP may run on different
+ * platforms with different endianness. To avoid byte order discrepancies,
+ * all the structures in this header follow little-endian format.
+ *
+ * This is an interface definition file where existing enums and their values
+ * must remain unchanged over time, so we specify explicit values for all enums.
+ */
+
+#include "virtchnl2_lan_desc.h"
+
+/* This macro is used to generate compilation errors if a structure
+ * is not exactly the correct length.
+ */
+#define VIRTCHNL2_CHECK_STRUCT_LEN(n, X) \
+ static_assert((n) == sizeof(struct X))
+
+/* New major set of opcodes introduced and so leaving room for
+ * old misc opcodes to be added in future. Also these opcodes may only
+ * be used if both the PF and VF have successfully negotiated the
+ * VIRTCHNL version as 2.0 during VIRTCHNL2_OP_VERSION exchange.
+ */
+enum virtchnl2_op {
+ VIRTCHNL2_OP_UNKNOWN = 0,
+ VIRTCHNL2_OP_VERSION = 1,
+ VIRTCHNL2_OP_GET_CAPS = 500,
+ VIRTCHNL2_OP_CREATE_VPORT = 501,
+ VIRTCHNL2_OP_DESTROY_VPORT = 502,
+ VIRTCHNL2_OP_ENABLE_VPORT = 503,
+ VIRTCHNL2_OP_DISABLE_VPORT = 504,
+ VIRTCHNL2_OP_CONFIG_TX_QUEUES = 505,
+ VIRTCHNL2_OP_CONFIG_RX_QUEUES = 506,
+ VIRTCHNL2_OP_ENABLE_QUEUES = 507,
+ VIRTCHNL2_OP_DISABLE_QUEUES = 508,
+ VIRTCHNL2_OP_ADD_QUEUES = 509,
+ VIRTCHNL2_OP_DEL_QUEUES = 510,
+ VIRTCHNL2_OP_MAP_QUEUE_VECTOR = 511,
+ VIRTCHNL2_OP_UNMAP_QUEUE_VECTOR = 512,
+ VIRTCHNL2_OP_GET_RSS_KEY = 513,
+ VIRTCHNL2_OP_SET_RSS_KEY = 514,
+ VIRTCHNL2_OP_GET_RSS_LUT = 515,
+ VIRTCHNL2_OP_SET_RSS_LUT = 516,
+ VIRTCHNL2_OP_GET_RSS_HASH = 517,
+ VIRTCHNL2_OP_SET_RSS_HASH = 518,
+ VIRTCHNL2_OP_SET_SRIOV_VFS = 519,
+ VIRTCHNL2_OP_ALLOC_VECTORS = 520,
+ VIRTCHNL2_OP_DEALLOC_VECTORS = 521,
+ VIRTCHNL2_OP_EVENT = 522,
+ VIRTCHNL2_OP_GET_STATS = 523,
+ VIRTCHNL2_OP_RESET_VF = 524,
+ VIRTCHNL2_OP_GET_EDT_CAPS = 525,
+ VIRTCHNL2_OP_GET_PTYPE_INFO = 526,
+ /* Opcode 527 and 528 are reserved for VIRTCHNL2_OP_GET_PTYPE_ID and
+ * VIRTCHNL2_OP_GET_PTYPE_INFO_RAW.
+ * Opcodes 529, 530, 531, 532 and 533 are reserved.
+ */
+ VIRTCHNL2_OP_LOOPBACK = 534,
+ VIRTCHNL2_OP_ADD_MAC_ADDR = 535,
+ VIRTCHNL2_OP_DEL_MAC_ADDR = 536,
+ VIRTCHNL2_OP_CONFIG_PROMISCUOUS_MODE = 537,
+};
+
+/**
+ * enum virtchnl2_vport_type - Type of virtual port.
+ * @VIRTCHNL2_VPORT_TYPE_DEFAULT: Default virtual port type.
+ */
+enum virtchnl2_vport_type {
+ VIRTCHNL2_VPORT_TYPE_DEFAULT = 0,
+};
+
+/**
+ * enum virtchnl2_queue_model - Type of queue model.
+ * @VIRTCHNL2_QUEUE_MODEL_SINGLE: Single queue model.
+ * @VIRTCHNL2_QUEUE_MODEL_SPLIT: Split queue model.
+ *
+ * In the single queue model, the same transmit descriptor queue is used by
+ * software to post descriptors to hardware and by hardware to post completed
+ * descriptors to software.
+ * Likewise, the same receive descriptor queue is used by hardware to post
+ * completions to software and by software to post buffers to hardware.
+ *
+ * In the split queue model, hardware uses transmit completion queues to post
+ * descriptor/buffer completions to software, while software uses transmit
+ * descriptor queues to post descriptors to hardware.
+ * Likewise, hardware posts descriptor completions to the receive descriptor
+ * queue, while software uses receive buffer queues to post buffers to hardware.
+ */
+enum virtchnl2_queue_model {
+ VIRTCHNL2_QUEUE_MODEL_SINGLE = 0,
+ VIRTCHNL2_QUEUE_MODEL_SPLIT = 1,
+};
+
+/* Checksum offload capability flags */
+enum virtchnl2_cap_txrx_csum {
+ VIRTCHNL2_CAP_TX_CSUM_L3_IPV4 = BIT(0),
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_TCP = BIT(1),
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_UDP = BIT(2),
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_SCTP = BIT(3),
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_TCP = BIT(4),
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_UDP = BIT(5),
+ VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_SCTP = BIT(6),
+ VIRTCHNL2_CAP_TX_CSUM_GENERIC = BIT(7),
+ VIRTCHNL2_CAP_RX_CSUM_L3_IPV4 = BIT(8),
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_TCP = BIT(9),
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_UDP = BIT(10),
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_SCTP = BIT(11),
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_TCP = BIT(12),
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_UDP = BIT(13),
+ VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_SCTP = BIT(14),
+ VIRTCHNL2_CAP_RX_CSUM_GENERIC = BIT(15),
+ VIRTCHNL2_CAP_TX_CSUM_L3_SINGLE_TUNNEL = BIT(16),
+ VIRTCHNL2_CAP_TX_CSUM_L3_DOUBLE_TUNNEL = BIT(17),
+ VIRTCHNL2_CAP_RX_CSUM_L3_SINGLE_TUNNEL = BIT(18),
+ VIRTCHNL2_CAP_RX_CSUM_L3_DOUBLE_TUNNEL = BIT(19),
+ VIRTCHNL2_CAP_TX_CSUM_L4_SINGLE_TUNNEL = BIT(20),
+ VIRTCHNL2_CAP_TX_CSUM_L4_DOUBLE_TUNNEL = BIT(21),
+ VIRTCHNL2_CAP_RX_CSUM_L4_SINGLE_TUNNEL = BIT(22),
+ VIRTCHNL2_CAP_RX_CSUM_L4_DOUBLE_TUNNEL = BIT(23),
+};
+
+/* Segmentation offload capability flags */
+enum virtchnl2_cap_seg {
+ VIRTCHNL2_CAP_SEG_IPV4_TCP = BIT(0),
+ VIRTCHNL2_CAP_SEG_IPV4_UDP = BIT(1),
+ VIRTCHNL2_CAP_SEG_IPV4_SCTP = BIT(2),
+ VIRTCHNL2_CAP_SEG_IPV6_TCP = BIT(3),
+ VIRTCHNL2_CAP_SEG_IPV6_UDP = BIT(4),
+ VIRTCHNL2_CAP_SEG_IPV6_SCTP = BIT(5),
+ VIRTCHNL2_CAP_SEG_GENERIC = BIT(6),
+ VIRTCHNL2_CAP_SEG_TX_SINGLE_TUNNEL = BIT(7),
+ VIRTCHNL2_CAP_SEG_TX_DOUBLE_TUNNEL = BIT(8),
+};
+
+/* Receive Side Scaling Flow type capability flags */
+enum virtchnl2_cap_rss {
+ VIRTCHNL2_CAP_RSS_IPV4_TCP = BIT(0),
+ VIRTCHNL2_CAP_RSS_IPV4_UDP = BIT(1),
+ VIRTCHNL2_CAP_RSS_IPV4_SCTP = BIT(2),
+ VIRTCHNL2_CAP_RSS_IPV4_OTHER = BIT(3),
+ VIRTCHNL2_CAP_RSS_IPV6_TCP = BIT(4),
+ VIRTCHNL2_CAP_RSS_IPV6_UDP = BIT(5),
+ VIRTCHNL2_CAP_RSS_IPV6_SCTP = BIT(6),
+ VIRTCHNL2_CAP_RSS_IPV6_OTHER = BIT(7),
+ VIRTCHNL2_CAP_RSS_IPV4_AH = BIT(8),
+ VIRTCHNL2_CAP_RSS_IPV4_ESP = BIT(9),
+ VIRTCHNL2_CAP_RSS_IPV4_AH_ESP = BIT(10),
+ VIRTCHNL2_CAP_RSS_IPV6_AH = BIT(11),
+ VIRTCHNL2_CAP_RSS_IPV6_ESP = BIT(12),
+ VIRTCHNL2_CAP_RSS_IPV6_AH_ESP = BIT(13),
+};
+
+/* Header split capability flags */
+enum virtchnl2_cap_rx_hsplit_at {
+ /* for prepended metadata */
+ VIRTCHNL2_CAP_RX_HSPLIT_AT_L2 = BIT(0),
+ /* all VLANs go into header buffer */
+ VIRTCHNL2_CAP_RX_HSPLIT_AT_L3 = BIT(1),
+ VIRTCHNL2_CAP_RX_HSPLIT_AT_L4V4 = BIT(2),
+ VIRTCHNL2_CAP_RX_HSPLIT_AT_L4V6 = BIT(3),
+};
+
+/* Receive Side Coalescing offload capability flags */
+enum virtchnl2_cap_rsc {
+ VIRTCHNL2_CAP_RSC_IPV4_TCP = BIT(0),
+ VIRTCHNL2_CAP_RSC_IPV4_SCTP = BIT(1),
+ VIRTCHNL2_CAP_RSC_IPV6_TCP = BIT(2),
+ VIRTCHNL2_CAP_RSC_IPV6_SCTP = BIT(3),
+};
+
+/* Other capability flags */
+enum virtchnl2_cap_other {
+ VIRTCHNL2_CAP_RDMA = BIT_ULL(0),
+ VIRTCHNL2_CAP_SRIOV = BIT_ULL(1),
+ VIRTCHNL2_CAP_MACFILTER = BIT_ULL(2),
+ VIRTCHNL2_CAP_FLOW_DIRECTOR = BIT_ULL(3),
+ /* Queue based scheduling using split queue model */
+ VIRTCHNL2_CAP_SPLITQ_QSCHED = BIT_ULL(4),
+ VIRTCHNL2_CAP_CRC = BIT_ULL(5),
+ VIRTCHNL2_CAP_ADQ = BIT_ULL(6),
+ VIRTCHNL2_CAP_WB_ON_ITR = BIT_ULL(7),
+ VIRTCHNL2_CAP_PROMISC = BIT_ULL(8),
+ VIRTCHNL2_CAP_LINK_SPEED = BIT_ULL(9),
+ VIRTCHNL2_CAP_INLINE_IPSEC = BIT_ULL(10),
+ VIRTCHNL2_CAP_LARGE_NUM_QUEUES = BIT_ULL(11),
+ VIRTCHNL2_CAP_VLAN = BIT_ULL(12),
+ VIRTCHNL2_CAP_PTP = BIT_ULL(13),
+ /* EDT: Earliest Departure Time capability used for Timing Wheel */
+ VIRTCHNL2_CAP_EDT = BIT_ULL(14),
+ VIRTCHNL2_CAP_ADV_RSS = BIT_ULL(15),
+ VIRTCHNL2_CAP_FDIR = BIT_ULL(16),
+ VIRTCHNL2_CAP_RX_FLEX_DESC = BIT_ULL(17),
+ VIRTCHNL2_CAP_PTYPE = BIT_ULL(18),
+ VIRTCHNL2_CAP_LOOPBACK = BIT_ULL(19),
+ /* Other capability 20 is reserved */
+
+ /* this must be the last capability */
+ VIRTCHNL2_CAP_OEM = BIT_ULL(63),
+};
+
+/* underlying device type */
+enum virtchl2_device_type {
+ VIRTCHNL2_MEV_DEVICE = 0,
+};
+
+/**
+ * enum virtchnl2_txq_sched_mode - Transmit Queue Scheduling Modes.
+ * @VIRTCHNL2_TXQ_SCHED_MODE_QUEUE: Queue mode is the legacy mode i.e. inorder
+ * completions where descriptors and buffers
+ * are completed at the same time.
+ * @VIRTCHNL2_TXQ_SCHED_MODE_FLOW: Flow scheduling mode allows for out of order
+ * packet processing where descriptors are
+ * cleaned in order, but buffers can be
+ * completed out of order.
+ */
+enum virtchnl2_txq_sched_mode {
+ VIRTCHNL2_TXQ_SCHED_MODE_QUEUE = 0,
+ VIRTCHNL2_TXQ_SCHED_MODE_FLOW = 1,
+};
+
+/**
+ * enum virtchnl2_rxq_flags - Receive Queue Feature flags.
+ * @VIRTCHNL2_RXQ_RSC: Rx queue RSC flag.
+ * @VIRTCHNL2_RXQ_HDR_SPLIT: Rx queue header split flag.
+ * @VIRTCHNL2_RXQ_IMMEDIATE_WRITE_BACK: When set, packet descriptors are flushed
+ * by hardware immediately after processing
+ * each packet.
+ * @VIRTCHNL2_RX_DESC_SIZE_16BYTE: Rx queue 16 byte descriptor size.
+ * @VIRTCHNL2_RX_DESC_SIZE_32BYTE: Rx queue 32 byte descriptor size.
+ */
+enum virtchnl2_rxq_flags {
+ VIRTCHNL2_RXQ_RSC = BIT(0),
+ VIRTCHNL2_RXQ_HDR_SPLIT = BIT(1),
+ VIRTCHNL2_RXQ_IMMEDIATE_WRITE_BACK = BIT(2),
+ VIRTCHNL2_RX_DESC_SIZE_16BYTE = BIT(3),
+ VIRTCHNL2_RX_DESC_SIZE_32BYTE = BIT(4),
+};
+
+/* Type of RSS algorithm */
+enum virtchnl2_rss_alg {
+ VIRTCHNL2_RSS_ALG_TOEPLITZ_ASYMMETRIC = 0,
+ VIRTCHNL2_RSS_ALG_R_ASYMMETRIC = 1,
+ VIRTCHNL2_RSS_ALG_TOEPLITZ_SYMMETRIC = 2,
+ VIRTCHNL2_RSS_ALG_XOR_SYMMETRIC = 3,
+};
+
+/* Type of event */
+enum virtchnl2_event_codes {
+ VIRTCHNL2_EVENT_UNKNOWN = 0,
+ VIRTCHNL2_EVENT_LINK_CHANGE = 1,
+ /* Event type 2, 3 are reserved */
+};
+
+/* Transmit and Receive queue types are valid in legacy as well as split queue
+ * models. With Split Queue model, 2 additional types are introduced -
+ * TX_COMPLETION and RX_BUFFER. In split queue model, receive corresponds to
+ * the queue where hardware posts completions.
+ */
+enum virtchnl2_queue_type {
+ VIRTCHNL2_QUEUE_TYPE_TX = 0,
+ VIRTCHNL2_QUEUE_TYPE_RX = 1,
+ VIRTCHNL2_QUEUE_TYPE_TX_COMPLETION = 2,
+ VIRTCHNL2_QUEUE_TYPE_RX_BUFFER = 3,
+ VIRTCHNL2_QUEUE_TYPE_CONFIG_TX = 4,
+ VIRTCHNL2_QUEUE_TYPE_CONFIG_RX = 5,
+ /* Queue types 6, 7, 8, 9 are reserved */
+ VIRTCHNL2_QUEUE_TYPE_MBX_TX = 10,
+ VIRTCHNL2_QUEUE_TYPE_MBX_RX = 11,
+};
+
+/* Interrupt throttling rate index */
+enum virtchnl2_itr_idx {
+ VIRTCHNL2_ITR_IDX_0 = 0,
+ VIRTCHNL2_ITR_IDX_1 = 1,
+};
+
+/**
+ * enum virtchnl2_mac_addr_type - MAC address types.
+ * @VIRTCHNL2_MAC_ADDR_PRIMARY: PF/VF driver should set this type for the
+ * primary/device unicast MAC address filter for
+ * VIRTCHNL2_OP_ADD_MAC_ADDR and
+ * VIRTCHNL2_OP_DEL_MAC_ADDR. This allows for the
+ * underlying control plane function to accurately
+ * track the MAC address and for VM/function reset.
+ *
+ * @VIRTCHNL2_MAC_ADDR_EXTRA: PF/VF driver should set this type for any extra
+ * unicast and/or multicast filters that are being
+ * added/deleted via VIRTCHNL2_OP_ADD_MAC_ADDR or
+ * VIRTCHNL2_OP_DEL_MAC_ADDR.
+ */
+enum virtchnl2_mac_addr_type {
+ VIRTCHNL2_MAC_ADDR_PRIMARY = 1,
+ VIRTCHNL2_MAC_ADDR_EXTRA = 2,
+};
+
+/* Flags used for promiscuous mode */
+enum virtchnl2_promisc_flags {
+ VIRTCHNL2_UNICAST_PROMISC = BIT(0),
+ VIRTCHNL2_MULTICAST_PROMISC = BIT(1),
+};
+
+/* Protocol header type within a packet segment. A segment consists of one or
+ * more protocol headers that make up a logical group of protocol headers. Each
+ * logical group of protocol headers encapsulates or is encapsulated using/by
+ * tunneling or encapsulation protocols for network virtualization.
+ */
+enum virtchnl2_proto_hdr_type {
+ /* VIRTCHNL2_PROTO_HDR_ANY is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_ANY = 0,
+ VIRTCHNL2_PROTO_HDR_PRE_MAC = 1,
+ /* VIRTCHNL2_PROTO_HDR_MAC is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_MAC = 2,
+ VIRTCHNL2_PROTO_HDR_POST_MAC = 3,
+ VIRTCHNL2_PROTO_HDR_ETHERTYPE = 4,
+ VIRTCHNL2_PROTO_HDR_VLAN = 5,
+ VIRTCHNL2_PROTO_HDR_SVLAN = 6,
+ VIRTCHNL2_PROTO_HDR_CVLAN = 7,
+ VIRTCHNL2_PROTO_HDR_MPLS = 8,
+ VIRTCHNL2_PROTO_HDR_UMPLS = 9,
+ VIRTCHNL2_PROTO_HDR_MMPLS = 10,
+ VIRTCHNL2_PROTO_HDR_PTP = 11,
+ VIRTCHNL2_PROTO_HDR_CTRL = 12,
+ VIRTCHNL2_PROTO_HDR_LLDP = 13,
+ VIRTCHNL2_PROTO_HDR_ARP = 14,
+ VIRTCHNL2_PROTO_HDR_ECP = 15,
+ VIRTCHNL2_PROTO_HDR_EAPOL = 16,
+ VIRTCHNL2_PROTO_HDR_PPPOD = 17,
+ VIRTCHNL2_PROTO_HDR_PPPOE = 18,
+ /* VIRTCHNL2_PROTO_HDR_IPV4 is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_IPV4 = 19,
+ /* IPv4 and IPv6 Fragment header types are only associated to
+ * VIRTCHNL2_PROTO_HDR_IPV4 and VIRTCHNL2_PROTO_HDR_IPV6 respectively,
+ * cannot be used independently.
+ */
+ /* VIRTCHNL2_PROTO_HDR_IPV4_FRAG is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_IPV4_FRAG = 20,
+ /* VIRTCHNL2_PROTO_HDR_IPV6 is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_IPV6 = 21,
+ /* VIRTCHNL2_PROTO_HDR_IPV6_FRAG is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_IPV6_FRAG = 22,
+ VIRTCHNL2_PROTO_HDR_IPV6_EH = 23,
+ /* VIRTCHNL2_PROTO_HDR_UDP is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_UDP = 24,
+ /* VIRTCHNL2_PROTO_HDR_TCP is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_TCP = 25,
+ /* VIRTCHNL2_PROTO_HDR_SCTP is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_SCTP = 26,
+ /* VIRTCHNL2_PROTO_HDR_ICMP is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_ICMP = 27,
+ /* VIRTCHNL2_PROTO_HDR_ICMPV6 is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_ICMPV6 = 28,
+ VIRTCHNL2_PROTO_HDR_IGMP = 29,
+ VIRTCHNL2_PROTO_HDR_AH = 30,
+ VIRTCHNL2_PROTO_HDR_ESP = 31,
+ VIRTCHNL2_PROTO_HDR_IKE = 32,
+ VIRTCHNL2_PROTO_HDR_NATT_KEEP = 33,
+ /* VIRTCHNL2_PROTO_HDR_PAY is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_PAY = 34,
+ VIRTCHNL2_PROTO_HDR_L2TPV2 = 35,
+ VIRTCHNL2_PROTO_HDR_L2TPV2_CONTROL = 36,
+ VIRTCHNL2_PROTO_HDR_L2TPV3 = 37,
+ VIRTCHNL2_PROTO_HDR_GTP = 38,
+ VIRTCHNL2_PROTO_HDR_GTP_EH = 39,
+ VIRTCHNL2_PROTO_HDR_GTPCV2 = 40,
+ VIRTCHNL2_PROTO_HDR_GTPC_TEID = 41,
+ VIRTCHNL2_PROTO_HDR_GTPU = 42,
+ VIRTCHNL2_PROTO_HDR_GTPU_UL = 43,
+ VIRTCHNL2_PROTO_HDR_GTPU_DL = 44,
+ VIRTCHNL2_PROTO_HDR_ECPRI = 45,
+ VIRTCHNL2_PROTO_HDR_VRRP = 46,
+ VIRTCHNL2_PROTO_HDR_OSPF = 47,
+ /* VIRTCHNL2_PROTO_HDR_TUN is a mandatory protocol id */
+ VIRTCHNL2_PROTO_HDR_TUN = 48,
+ VIRTCHNL2_PROTO_HDR_GRE = 49,
+ VIRTCHNL2_PROTO_HDR_NVGRE = 50,
+ VIRTCHNL2_PROTO_HDR_VXLAN = 51,
+ VIRTCHNL2_PROTO_HDR_VXLAN_GPE = 52,
+ VIRTCHNL2_PROTO_HDR_GENEVE = 53,
+ VIRTCHNL2_PROTO_HDR_NSH = 54,
+ VIRTCHNL2_PROTO_HDR_QUIC = 55,
+ VIRTCHNL2_PROTO_HDR_PFCP = 56,
+ VIRTCHNL2_PROTO_HDR_PFCP_NODE = 57,
+ VIRTCHNL2_PROTO_HDR_PFCP_SESSION = 58,
+ VIRTCHNL2_PROTO_HDR_RTP = 59,
+ VIRTCHNL2_PROTO_HDR_ROCE = 60,
+ VIRTCHNL2_PROTO_HDR_ROCEV1 = 61,
+ VIRTCHNL2_PROTO_HDR_ROCEV2 = 62,
+ /* Protocol ids up to 32767 are reserved.
+ * 32768 - 65534 are used for user defined protocol ids.
+ * VIRTCHNL2_PROTO_HDR_NO_PROTO is a mandatory protocol id.
+ */
+ VIRTCHNL2_PROTO_HDR_NO_PROTO = 65535,
+};
+
+enum virtchl2_version {
+ VIRTCHNL2_VERSION_MINOR_0 = 0,
+ VIRTCHNL2_VERSION_MAJOR_2 = 2,
+};
+
+/**
+ * struct virtchnl2_edt_caps - Get EDT granularity and time horizon.
+ * @tstamp_granularity_ns: Timestamp granularity in nanoseconds.
+ * @time_horizon_ns: Total time window in nanoseconds.
+ *
+ * Associated with VIRTCHNL2_OP_GET_EDT_CAPS.
+ */
+struct virtchnl2_edt_caps {
+ __le64 tstamp_granularity_ns;
+ __le64 time_horizon_ns;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_edt_caps);
+
+/**
+ * struct virtchnl2_version_info - Version information.
+ * @major: Major version.
+ * @minor: Minor version.
+ *
+ * PF/VF posts its version number to the CP. CP responds with its version number
+ * in the same format, along with a return code.
+ * If there is a major version mismatch, then the PF/VF cannot operate.
+ * If there is a minor version mismatch, then the PF/VF can operate but should
+ * add a warning to the system log.
+ *
+ * This version opcode MUST always be specified as == 1, regardless of other
+ * changes in the API. The CP must always respond to this message without
+ * error regardless of version mismatch.
+ *
+ * Associated with VIRTCHNL2_OP_VERSION.
+ */
+struct virtchnl2_version_info {
+ __le32 major;
+ __le32 minor;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_version_info);
+
+/**
+ * struct virtchnl2_get_capabilities - Capabilities info.
+ * @csum_caps: See enum virtchnl2_cap_txrx_csum.
+ * @seg_caps: See enum virtchnl2_cap_seg.
+ * @hsplit_caps: See enum virtchnl2_cap_rx_hsplit_at.
+ * @rsc_caps: See enum virtchnl2_cap_rsc.
+ * @rss_caps: See enum virtchnl2_cap_rss.
+ * @other_caps: See enum virtchnl2_cap_other.
+ * @mailbox_dyn_ctl: DYN_CTL register offset and vector id for mailbox
+ * provided by CP.
+ * @mailbox_vector_id: Mailbox vector id.
+ * @num_allocated_vectors: Maximum number of allocated vectors for the device.
+ * @max_rx_q: Maximum number of supported Rx queues.
+ * @max_tx_q: Maximum number of supported Tx queues.
+ * @max_rx_bufq: Maximum number of supported buffer queues.
+ * @max_tx_complq: Maximum number of supported completion queues.
+ * @max_sriov_vfs: The PF sends the maximum VFs it is requesting. The CP
+ * responds with the maximum VFs granted.
+ * @max_vports: Maximum number of vports that can be supported.
+ * @default_num_vports: Default number of vports driver should allocate on load.
+ * @max_tx_hdr_size: Max header length hardware can parse/checksum, in bytes.
+ * @max_sg_bufs_per_tx_pkt: Max number of scatter gather buffers that can be
+ * sent per transmit packet without needing to be
+ * linearized.
+ * @pad: Padding.
+ * @reserved: Reserved.
+ * @device_type: See enum virtchl2_device_type.
+ * @min_sso_packet_len: Min packet length supported by device for single
+ * segment offload.
+ * @max_hdr_buf_per_lso: Max number of header buffers that can be used for
+ * an LSO.
+ * @pad1: Padding for future extensions.
+ *
+ * Dataplane driver sends this message to CP to negotiate capabilities and
+ * provides a virtchnl2_get_capabilities structure with its desired
+ * capabilities, max_sriov_vfs and num_allocated_vectors.
+ * CP responds with a virtchnl2_get_capabilities structure updated
+ * with allowed capabilities and the other fields as below.
+ * If PF sets max_sriov_vfs as 0, CP will respond with max number of VFs
+ * that can be created by this PF. For any other value 'n', CP responds
+ * with max_sriov_vfs set to min(n, x) where x is the max number of VFs
+ * allowed by CP's policy. max_sriov_vfs is not applicable for VFs.
+ * If dataplane driver sets num_allocated_vectors as 0, CP will respond with 1
+ * which is default vector associated with the default mailbox. For any other
+ * value 'n', CP responds with a value <= n based on the CP's policy of
+ * max number of vectors for a PF.
+ * CP will respond with the vector ID of mailbox allocated to the PF in
+ * mailbox_vector_id and the number of itr index registers in itr_idx_map.
+ * It also responds with default number of vports that the dataplane driver
+ * should comeup with in default_num_vports and maximum number of vports that
+ * can be supported in max_vports.
+ *
+ * Associated with VIRTCHNL2_OP_GET_CAPS.
+ */
+struct virtchnl2_get_capabilities {
+ __le32 csum_caps;
+ __le32 seg_caps;
+ __le32 hsplit_caps;
+ __le32 rsc_caps;
+ __le64 rss_caps;
+ __le64 other_caps;
+ __le32 mailbox_dyn_ctl;
+ __le16 mailbox_vector_id;
+ __le16 num_allocated_vectors;
+ __le16 max_rx_q;
+ __le16 max_tx_q;
+ __le16 max_rx_bufq;
+ __le16 max_tx_complq;
+ __le16 max_sriov_vfs;
+ __le16 max_vports;
+ __le16 default_num_vports;
+ __le16 max_tx_hdr_size;
+ u8 max_sg_bufs_per_tx_pkt;
+ u8 pad[3];
+ u8 reserved[4];
+ __le32 device_type;
+ u8 min_sso_packet_len;
+ u8 max_hdr_buf_per_lso;
+ u8 pad1[10];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(80, virtchnl2_get_capabilities);
+
+/**
+ * struct virtchnl2_queue_reg_chunk - Single queue chunk.
+ * @type: See enum virtchnl2_queue_type.
+ * @start_queue_id: Start Queue ID.
+ * @num_queues: Number of queues in the chunk.
+ * @pad: Padding.
+ * @qtail_reg_start: Queue tail register offset.
+ * @qtail_reg_spacing: Queue tail register spacing.
+ * @pad1: Padding for future extensions.
+ */
+struct virtchnl2_queue_reg_chunk {
+ __le32 type;
+ __le32 start_queue_id;
+ __le32 num_queues;
+ __le32 pad;
+ __le64 qtail_reg_start;
+ __le32 qtail_reg_spacing;
+ u8 pad1[4];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(32, virtchnl2_queue_reg_chunk);
+
+/**
+ * struct virtchnl2_queue_reg_chunks - Specify several chunks of contiguous
+ * queues.
+ * @num_chunks: Number of chunks.
+ * @pad: Padding.
+ * @chunks: Chunks of queue info.
+ */
+struct virtchnl2_queue_reg_chunks {
+ __le16 num_chunks;
+ u8 pad[6];
+ struct virtchnl2_queue_reg_chunk chunks[];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_queue_reg_chunks);
+
+/**
+ * struct virtchnl2_create_vport - Create vport config info.
+ * @vport_type: See enum virtchnl2_vport_type.
+ * @txq_model: See virtchnl2_queue_model.
+ * @rxq_model: See virtchnl2_queue_model.
+ * @num_tx_q: Number of Tx queues.
+ * @num_tx_complq: Valid only if txq_model is split queue.
+ * @num_rx_q: Number of Rx queues.
+ * @num_rx_bufq: Valid only if rxq_model is split queue.
+ * @default_rx_q: Relative receive queue index to be used as default.
+ * @vport_index: Used to align PF and CP in case of default multiple vports,
+ * it is filled by the PF and CP returns the same value, to
+ * enable the driver to support multiple asynchronous parallel
+ * CREATE_VPORT requests and associate a response to a specific
+ * request.
+ * @max_mtu: Max MTU. CP populates this field on response.
+ * @vport_id: Vport id. CP populates this field on response.
+ * @default_mac_addr: Default MAC address.
+ * @pad: Padding.
+ * @rx_desc_ids: See VIRTCHNL2_RX_DESC_IDS definitions.
+ * @tx_desc_ids: See VIRTCHNL2_TX_DESC_IDS definitions.
+ * @pad1: Padding.
+ * @rss_algorithm: RSS algorithm.
+ * @rss_key_size: RSS key size.
+ * @rss_lut_size: RSS LUT size.
+ * @rx_split_pos: See enum virtchnl2_cap_rx_hsplit_at.
+ * @pad2: Padding.
+ * @chunks: Chunks of contiguous queues.
+ *
+ * PF sends this message to CP to create a vport by filling in required
+ * fields of virtchnl2_create_vport structure.
+ * CP responds with the updated virtchnl2_create_vport structure containing the
+ * necessary fields followed by chunks which in turn will have an array of
+ * num_chunks entries of virtchnl2_queue_chunk structures.
+ *
+ * Associated with VIRTCHNL2_OP_CREATE_VPORT.
+ */
+struct virtchnl2_create_vport {
+ __le16 vport_type;
+ __le16 txq_model;
+ __le16 rxq_model;
+ __le16 num_tx_q;
+ __le16 num_tx_complq;
+ __le16 num_rx_q;
+ __le16 num_rx_bufq;
+ __le16 default_rx_q;
+ __le16 vport_index;
+ /* CP populates the following fields on response */
+ __le16 max_mtu;
+ __le32 vport_id;
+ u8 default_mac_addr[ETH_ALEN];
+ __le16 pad;
+ __le64 rx_desc_ids;
+ __le64 tx_desc_ids;
+ u8 pad1[72];
+ __le32 rss_algorithm;
+ __le16 rss_key_size;
+ __le16 rss_lut_size;
+ __le32 rx_split_pos;
+ u8 pad2[20];
+ struct virtchnl2_queue_reg_chunks chunks;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(160, virtchnl2_create_vport);
+
+/**
+ * struct virtchnl2_vport - Vport ID info.
+ * @vport_id: Vport id.
+ * @pad: Padding for future extensions.
+ *
+ * PF sends this message to CP to destroy, enable or disable a vport by filling
+ * in the vport_id in virtchnl2_vport structure.
+ * CP responds with the status of the requested operation.
+ *
+ * Associated with VIRTCHNL2_OP_DESTROY_VPORT, VIRTCHNL2_OP_ENABLE_VPORT,
+ * VIRTCHNL2_OP_DISABLE_VPORT.
+ */
+struct virtchnl2_vport {
+ __le32 vport_id;
+ u8 pad[4];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_vport);
+
+/**
+ * struct virtchnl2_txq_info - Transmit queue config info
+ * @dma_ring_addr: DMA address.
+ * @type: See enum virtchnl2_queue_type.
+ * @queue_id: Queue ID.
+ * @relative_queue_id: Valid only if queue model is split and type is transmit
+ * queue. Used in many to one mapping of transmit queues to
+ * completion queue.
+ * @model: See enum virtchnl2_queue_model.
+ * @sched_mode: See enum virtchnl2_txq_sched_mode.
+ * @qflags: TX queue feature flags.
+ * @ring_len: Ring length.
+ * @tx_compl_queue_id: Valid only if queue model is split and type is transmit
+ * queue.
+ * @peer_type: Valid only if queue type is VIRTCHNL2_QUEUE_TYPE_MAILBOX_TX
+ * @peer_rx_queue_id: Valid only if queue type is CONFIG_TX and used to deliver
+ * messages for the respective CONFIG_TX queue.
+ * @pad: Padding.
+ * @egress_pasid: Egress PASID info.
+ * @egress_hdr_pasid: Egress HDR passid.
+ * @egress_buf_pasid: Egress buf passid.
+ * @pad1: Padding for future extensions.
+ */
+struct virtchnl2_txq_info {
+ __le64 dma_ring_addr;
+ __le32 type;
+ __le32 queue_id;
+ __le16 relative_queue_id;
+ __le16 model;
+ __le16 sched_mode;
+ __le16 qflags;
+ __le16 ring_len;
+ __le16 tx_compl_queue_id;
+ __le16 peer_type;
+ __le16 peer_rx_queue_id;
+ u8 pad[4];
+ __le32 egress_pasid;
+ __le32 egress_hdr_pasid;
+ __le32 egress_buf_pasid;
+ u8 pad1[8];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(56, virtchnl2_txq_info);
+
+/**
+ * struct virtchnl2_config_tx_queues - TX queue config.
+ * @vport_id: Vport id.
+ * @num_qinfo: Number of virtchnl2_txq_info structs.
+ * @pad: Padding.
+ * @qinfo: Tx queues config info.
+ *
+ * PF sends this message to set up parameters for one or more transmit queues.
+ * This message contains an array of num_qinfo instances of virtchnl2_txq_info
+ * structures. CP configures requested queues and returns a status code. If
+ * num_qinfo specified is greater than the number of queues associated with the
+ * vport, an error is returned and no queues are configured.
+ *
+ * Associated with VIRTCHNL2_OP_CONFIG_TX_QUEUES.
+ */
+struct virtchnl2_config_tx_queues {
+ __le32 vport_id;
+ __le16 num_qinfo;
+ u8 pad[10];
+ struct virtchnl2_txq_info qinfo[];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_config_tx_queues);
+
+/**
+ * struct virtchnl2_rxq_info - Receive queue config info.
+ * @desc_ids: See VIRTCHNL2_RX_DESC_IDS definitions.
+ * @dma_ring_addr: See VIRTCHNL2_RX_DESC_IDS definitions.
+ * @type: See enum virtchnl2_queue_type.
+ * @queue_id: Queue id.
+ * @model: See enum virtchnl2_queue_model.
+ * @hdr_buffer_size: Header buffer size.
+ * @data_buffer_size: Data buffer size.
+ * @max_pkt_size: Max packet size.
+ * @ring_len: Ring length.
+ * @buffer_notif_stride: Buffer notification stride in units of 32-descriptors.
+ * This field must be a power of 2.
+ * @pad: Padding.
+ * @dma_head_wb_addr: Applicable only for receive buffer queues.
+ * @qflags: Applicable only for receive completion queues.
+ * See enum virtchnl2_rxq_flags.
+ * @rx_buffer_low_watermark: Rx buffer low watermark.
+ * @rx_bufq1_id: Buffer queue index of the first buffer queue associated with
+ * the Rx queue. Valid only in split queue model.
+ * @rx_bufq2_id: Buffer queue index of the second buffer queue associated with
+ * the Rx queue. Valid only in split queue model.
+ * @bufq2_ena: It indicates if there is a second buffer, rx_bufq2_id is valid
+ * only if this field is set.
+ * @pad1: Padding.
+ * @ingress_pasid: Ingress PASID.
+ * @ingress_hdr_pasid: Ingress PASID header.
+ * @ingress_buf_pasid: Ingress PASID buffer.
+ * @pad2: Padding for future extensions.
+ */
+struct virtchnl2_rxq_info {
+ __le64 desc_ids;
+ __le64 dma_ring_addr;
+ __le32 type;
+ __le32 queue_id;
+ __le16 model;
+ __le16 hdr_buffer_size;
+ __le32 data_buffer_size;
+ __le32 max_pkt_size;
+ __le16 ring_len;
+ u8 buffer_notif_stride;
+ u8 pad;
+ __le64 dma_head_wb_addr;
+ __le16 qflags;
+ __le16 rx_buffer_low_watermark;
+ __le16 rx_bufq1_id;
+ __le16 rx_bufq2_id;
+ u8 bufq2_ena;
+ u8 pad1[3];
+ __le32 ingress_pasid;
+ __le32 ingress_hdr_pasid;
+ __le32 ingress_buf_pasid;
+ u8 pad2[16];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(88, virtchnl2_rxq_info);
+
+/**
+ * struct virtchnl2_config_rx_queues - Rx queues config.
+ * @vport_id: Vport id.
+ * @num_qinfo: Number of instances.
+ * @pad: Padding.
+ * @qinfo: Rx queues config info.
+ *
+ * PF sends this message to set up parameters for one or more receive queues.
+ * This message contains an array of num_qinfo instances of virtchnl2_rxq_info
+ * structures. CP configures requested queues and returns a status code.
+ * If the number of queues specified is greater than the number of queues
+ * associated with the vport, an error is returned and no queues are configured.
+ *
+ * Associated with VIRTCHNL2_OP_CONFIG_RX_QUEUES.
+ */
+struct virtchnl2_config_rx_queues {
+ __le32 vport_id;
+ __le16 num_qinfo;
+ u8 pad[18];
+ struct virtchnl2_rxq_info qinfo[];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(24, virtchnl2_config_rx_queues);
+
+/**
+ * struct virtchnl2_add_queues - data for VIRTCHNL2_OP_ADD_QUEUES.
+ * @vport_id: Vport id.
+ * @num_tx_q: Number of Tx qieues.
+ * @num_tx_complq: Number of Tx completion queues.
+ * @num_rx_q: Number of Rx queues.
+ * @num_rx_bufq: Number of Rx buffer queues.
+ * @pad: Padding.
+ * @chunks: Chunks of contiguous queues.
+ *
+ * PF sends this message to request additional transmit/receive queues beyond
+ * the ones that were assigned via CREATE_VPORT request. virtchnl2_add_queues
+ * structure is used to specify the number of each type of queues.
+ * CP responds with the same structure with the actual number of queues assigned
+ * followed by num_chunks of virtchnl2_queue_chunk structures.
+ *
+ * Associated with VIRTCHNL2_OP_ADD_QUEUES.
+ */
+struct virtchnl2_add_queues {
+ __le32 vport_id;
+ __le16 num_tx_q;
+ __le16 num_tx_complq;
+ __le16 num_rx_q;
+ __le16 num_rx_bufq;
+ u8 pad[4];
+ struct virtchnl2_queue_reg_chunks chunks;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(24, virtchnl2_add_queues);
+
+/**
+ * struct virtchnl2_vector_chunk - Structure to specify a chunk of contiguous
+ * interrupt vectors.
+ * @start_vector_id: Start vector id.
+ * @start_evv_id: Start EVV id.
+ * @num_vectors: Number of vectors.
+ * @pad: Padding.
+ * @dynctl_reg_start: DYN_CTL register offset.
+ * @dynctl_reg_spacing: register spacing between DYN_CTL registers of 2
+ * consecutive vectors.
+ * @itrn_reg_start: ITRN register offset.
+ * @itrn_reg_spacing: Register spacing between dynctl registers of 2
+ * consecutive vectors.
+ * @itrn_index_spacing: Register spacing between itrn registers of the same
+ * vector where n=0..2.
+ * @pad1: Padding for future extensions.
+ *
+ * Register offsets and spacing provided by CP.
+ * Dynamic control registers are used for enabling/disabling/re-enabling
+ * interrupts and updating interrupt rates in the hotpath. Any changes
+ * to interrupt rates in the dynamic control registers will be reflected
+ * in the interrupt throttling rate registers.
+ * itrn registers are used to update interrupt rates for specific
+ * interrupt indices without modifying the state of the interrupt.
+ */
+struct virtchnl2_vector_chunk {
+ __le16 start_vector_id;
+ __le16 start_evv_id;
+ __le16 num_vectors;
+ __le16 pad;
+ __le32 dynctl_reg_start;
+ __le32 dynctl_reg_spacing;
+ __le32 itrn_reg_start;
+ __le32 itrn_reg_spacing;
+ __le32 itrn_index_spacing;
+ u8 pad1[4];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(32, virtchnl2_vector_chunk);
+
+/**
+ * struct virtchnl2_vector_chunks - chunks of contiguous interrupt vectors.
+ * @num_vchunks: number of vector chunks.
+ * @pad: Padding.
+ * @vchunks: Chunks of contiguous vector info.
+ *
+ * PF sends virtchnl2_vector_chunks struct to specify the vectors it is giving
+ * away. CP performs requested action and returns status.
+ *
+ * Associated with VIRTCHNL2_OP_DEALLOC_VECTORS.
+ */
+struct virtchnl2_vector_chunks {
+ __le16 num_vchunks;
+ u8 pad[14];
+ struct virtchnl2_vector_chunk vchunks[];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_vector_chunks);
+
+/**
+ * struct virtchnl2_alloc_vectors - vector allocation info.
+ * @num_vectors: Number of vectors.
+ * @pad: Padding.
+ * @vchunks: Chunks of contiguous vector info.
+ *
+ * PF sends this message to request additional interrupt vectors beyond the
+ * ones that were assigned via GET_CAPS request. virtchnl2_alloc_vectors
+ * structure is used to specify the number of vectors requested. CP responds
+ * with the same structure with the actual number of vectors assigned followed
+ * by virtchnl2_vector_chunks structure identifying the vector ids.
+ *
+ * Associated with VIRTCHNL2_OP_ALLOC_VECTORS.
+ */
+struct virtchnl2_alloc_vectors {
+ __le16 num_vectors;
+ u8 pad[14];
+ struct virtchnl2_vector_chunks vchunks;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(32, virtchnl2_alloc_vectors);
+
+/**
+ * struct virtchnl2_rss_lut - RSS LUT info.
+ * @vport_id: Vport id.
+ * @lut_entries_start: Start of LUT entries.
+ * @lut_entries: Number of LUT entrties.
+ * @pad: Padding.
+ * @lut: RSS lookup table.
+ *
+ * PF sends this message to get or set RSS lookup table. Only supported if
+ * both PF and CP drivers set the VIRTCHNL2_CAP_RSS bit during configuration
+ * negotiation.
+ *
+ * Associated with VIRTCHNL2_OP_GET_RSS_LUT and VIRTCHNL2_OP_SET_RSS_LUT.
+ */
+struct virtchnl2_rss_lut {
+ __le32 vport_id;
+ __le16 lut_entries_start;
+ __le16 lut_entries;
+ u8 pad[4];
+ __le32 lut[];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(12, virtchnl2_rss_lut);
+
+/**
+ * struct virtchnl2_rss_hash - RSS hash info.
+ * @ptype_groups: Packet type groups bitmap.
+ * @vport_id: Vport id.
+ * @pad: Padding for future extensions.
+ *
+ * PF sends these messages to get and set the hash filter enable bits for RSS.
+ * By default, the CP sets these to all possible traffic types that the
+ * hardware supports. The PF can query this value if it wants to change the
+ * traffic types that are hashed by the hardware.
+ * Only supported if both PF and CP drivers set the VIRTCHNL2_CAP_RSS bit
+ * during configuration negotiation.
+ *
+ * Associated with VIRTCHNL2_OP_GET_RSS_HASH and VIRTCHNL2_OP_SET_RSS_HASH
+ */
+struct virtchnl2_rss_hash {
+ __le64 ptype_groups;
+ __le32 vport_id;
+ u8 pad[4];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_rss_hash);
+
+/**
+ * struct virtchnl2_sriov_vfs_info - VFs info.
+ * @num_vfs: Number of VFs.
+ * @pad: Padding for future extensions.
+ *
+ * This message is used to set number of SRIOV VFs to be created. The actual
+ * allocation of resources for the VFs in terms of vport, queues and interrupts
+ * is done by CP. When this call completes, the IDPF driver calls
+ * pci_enable_sriov to let the OS instantiate the SRIOV PCIE devices.
+ * The number of VFs set to 0 will destroy all the VFs of this function.
+ *
+ * Associated with VIRTCHNL2_OP_SET_SRIOV_VFS.
+ */
+struct virtchnl2_sriov_vfs_info {
+ __le16 num_vfs;
+ __le16 pad;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(4, virtchnl2_sriov_vfs_info);
+
+/**
+ * struct virtchnl2_ptype - Packet type info.
+ * @ptype_id_10: 10-bit packet type.
+ * @ptype_id_8: 8-bit packet type.
+ * @proto_id_count: Number of protocol ids the packet supports, maximum of 32
+ * protocol ids are supported.
+ * @pad: Padding.
+ * @proto_id: proto_id_count decides the allocation of protocol id array.
+ * See enum virtchnl2_proto_hdr_type.
+ *
+ * Based on the descriptor type the PF supports, CP fills ptype_id_10 or
+ * ptype_id_8 for flex and base descriptor respectively. If ptype_id_10 value
+ * is set to 0xFFFF, PF should consider this ptype as dummy one and it is the
+ * last ptype.
+ */
+struct virtchnl2_ptype {
+ __le16 ptype_id_10;
+ u8 ptype_id_8;
+ u8 proto_id_count;
+ __le16 pad;
+ __le16 proto_id[];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(6, virtchnl2_ptype);
+
+/**
+ * struct virtchnl2_get_ptype_info - Packet type info.
+ * @start_ptype_id: Starting ptype ID.
+ * @num_ptypes: Number of packet types from start_ptype_id.
+ * @pad: Padding for future extensions.
+ *
+ * The total number of supported packet types is based on the descriptor type.
+ * For the flex descriptor, it is 1024 (10-bit ptype), and for the base
+ * descriptor, it is 256 (8-bit ptype). Send this message to the CP by
+ * populating the 'start_ptype_id' and the 'num_ptypes'. CP responds with the
+ * 'start_ptype_id', 'num_ptypes', and the array of ptype (virtchnl2_ptype) that
+ * are added at the end of the 'virtchnl2_get_ptype_info' message (Note: There
+ * is no specific field for the ptypes but are added at the end of the
+ * ptype info message. PF/VF is expected to extract the ptypes accordingly.
+ * Reason for doing this is because compiler doesn't allow nested flexible
+ * array fields).
+ *
+ * If all the ptypes don't fit into one mailbox buffer, CP splits the
+ * ptype info into multiple messages, where each message will have its own
+ * 'start_ptype_id', 'num_ptypes', and the ptype array itself. When CP is done
+ * updating all the ptype information extracted from the package (the number of
+ * ptypes extracted might be less than what PF/VF expects), it will append a
+ * dummy ptype (which has 'ptype_id_10' of 'struct virtchnl2_ptype' as 0xFFFF)
+ * to the ptype array.
+ *
+ * PF/VF is expected to receive multiple VIRTCHNL2_OP_GET_PTYPE_INFO messages.
+ *
+ * Associated with VIRTCHNL2_OP_GET_PTYPE_INFO.
+ */
+struct virtchnl2_get_ptype_info {
+ __le16 start_ptype_id;
+ __le16 num_ptypes;
+ __le32 pad;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_get_ptype_info);
+
+/**
+ * struct virtchnl2_vport_stats - Vport statistics.
+ * @vport_id: Vport id.
+ * @pad: Padding.
+ * @rx_bytes: Received bytes.
+ * @rx_unicast: Received unicast packets.
+ * @rx_multicast: Received multicast packets.
+ * @rx_broadcast: Received broadcast packets.
+ * @rx_discards: Discarded packets on receive.
+ * @rx_errors: Receive errors.
+ * @rx_unknown_protocol: Unlnown protocol.
+ * @tx_bytes: Transmitted bytes.
+ * @tx_unicast: Transmitted unicast packets.
+ * @tx_multicast: Transmitted multicast packets.
+ * @tx_broadcast: Transmitted broadcast packets.
+ * @tx_discards: Discarded packets on transmit.
+ * @tx_errors: Transmit errors.
+ * @rx_invalid_frame_length: Packets with invalid frame length.
+ * @rx_overflow_drop: Packets dropped on buffer overflow.
+ *
+ * PF/VF sends this message to CP to get the update stats by specifying the
+ * vport_id. CP responds with stats in struct virtchnl2_vport_stats.
+ *
+ * Associated with VIRTCHNL2_OP_GET_STATS.
+ */
+struct virtchnl2_vport_stats {
+ __le32 vport_id;
+ u8 pad[4];
+ __le64 rx_bytes;
+ __le64 rx_unicast;
+ __le64 rx_multicast;
+ __le64 rx_broadcast;
+ __le64 rx_discards;
+ __le64 rx_errors;
+ __le64 rx_unknown_protocol;
+ __le64 tx_bytes;
+ __le64 tx_unicast;
+ __le64 tx_multicast;
+ __le64 tx_broadcast;
+ __le64 tx_discards;
+ __le64 tx_errors;
+ __le64 rx_invalid_frame_length;
+ __le64 rx_overflow_drop;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(128, virtchnl2_vport_stats);
+
+/**
+ * struct virtchnl2_event - Event info.
+ * @event: Event opcode. See enum virtchnl2_event_codes.
+ * @link_speed: Link_speed provided in Mbps.
+ * @vport_id: Vport ID.
+ * @link_status: Link status.
+ * @pad: Padding.
+ * @reserved: Reserved.
+ *
+ * CP sends this message to inform the PF/VF driver of events that may affect
+ * it. No direct response is expected from the driver, though it may generate
+ * other messages in response to this one.
+ *
+ * Associated with VIRTCHNL2_OP_EVENT.
+ */
+struct virtchnl2_event {
+ __le32 event;
+ __le32 link_speed;
+ __le32 vport_id;
+ u8 link_status;
+ u8 pad;
+ __le16 reserved;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_event);
+
+/**
+ * struct virtchnl2_rss_key - RSS key info.
+ * @vport_id: Vport id.
+ * @key_len: Length of RSS key.
+ * @pad: Padding.
+ * @key_flex: RSS hash key, packed bytes.
+ * PF/VF sends this message to get or set RSS key. Only supported if both
+ * PF/VF and CP drivers set the VIRTCHNL2_CAP_RSS bit during configuration
+ * negotiation.
+ *
+ * Associated with VIRTCHNL2_OP_GET_RSS_KEY and VIRTCHNL2_OP_SET_RSS_KEY.
+ */
+struct virtchnl2_rss_key {
+ __le32 vport_id;
+ __le16 key_len;
+ u8 pad;
+ __DECLARE_FLEX_ARRAY(u8, key_flex);
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_rss_key);
+
+/**
+ * struct virtchnl2_queue_chunk - chunk of contiguous queues
+ * @type: See enum virtchnl2_queue_type.
+ * @start_queue_id: Starting queue id.
+ * @num_queues: Number of queues.
+ * @pad: Padding for future extensions.
+ */
+struct virtchnl2_queue_chunk {
+ __le32 type;
+ __le32 start_queue_id;
+ __le32 num_queues;
+ u8 pad[4];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_queue_chunk);
+
+/* struct virtchnl2_queue_chunks - chunks of contiguous queues
+ * @num_chunks: Number of chunks.
+ * @pad: Padding.
+ * @chunks: Chunks of contiguous queues info.
+ */
+struct virtchnl2_queue_chunks {
+ __le16 num_chunks;
+ u8 pad[6];
+ struct virtchnl2_queue_chunk chunks[];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_queue_chunks);
+
+/**
+ * struct virtchnl2_del_ena_dis_queues - Enable/disable queues info.
+ * @vport_id: Vport id.
+ * @pad: Padding.
+ * @chunks: Chunks of contiguous queues info.
+ *
+ * PF sends these messages to enable, disable or delete queues specified in
+ * chunks. PF sends virtchnl2_del_ena_dis_queues struct to specify the queues
+ * to be enabled/disabled/deleted. Also applicable to single queue receive or
+ * transmit. CP performs requested action and returns status.
+ *
+ * Associated with VIRTCHNL2_OP_ENABLE_QUEUES, VIRTCHNL2_OP_DISABLE_QUEUES and
+ * VIRTCHNL2_OP_DISABLE_QUEUES.
+ */
+struct virtchnl2_del_ena_dis_queues {
+ __le32 vport_id;
+ u8 pad[4];
+ struct virtchnl2_queue_chunks chunks;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_del_ena_dis_queues);
+
+/**
+ * struct virtchnl2_queue_vector - Queue to vector mapping.
+ * @queue_id: Queue id.
+ * @vector_id: Vector id.
+ * @pad: Padding.
+ * @itr_idx: See enum virtchnl2_itr_idx.
+ * @queue_type: See enum virtchnl2_queue_type.
+ * @pad1: Padding for future extensions.
+ */
+struct virtchnl2_queue_vector {
+ __le32 queue_id;
+ __le16 vector_id;
+ u8 pad[2];
+ __le32 itr_idx;
+ __le32 queue_type;
+ u8 pad1[8];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(24, virtchnl2_queue_vector);
+
+/**
+ * struct virtchnl2_queue_vector_maps - Map/unmap queues info.
+ * @vport_id: Vport id.
+ * @num_qv_maps: Number of queue vector maps.
+ * @pad: Padding.
+ * @qv_maps: Queue to vector maps.
+ *
+ * PF sends this message to map or unmap queues to vectors and interrupt
+ * throttling rate index registers. External data buffer contains
+ * virtchnl2_queue_vector_maps structure that contains num_qv_maps of
+ * virtchnl2_queue_vector structures. CP maps the requested queue vector maps
+ * after validating the queue and vector ids and returns a status code.
+ *
+ * Associated with VIRTCHNL2_OP_MAP_QUEUE_VECTOR and
+ * VIRTCHNL2_OP_UNMAP_QUEUE_VECTOR.
+ */
+struct virtchnl2_queue_vector_maps {
+ __le32 vport_id;
+ __le16 num_qv_maps;
+ u8 pad[10];
+ struct virtchnl2_queue_vector qv_maps[];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_queue_vector_maps);
+
+/**
+ * struct virtchnl2_loopback - Loopback info.
+ * @vport_id: Vport id.
+ * @enable: Enable/disable.
+ * @pad: Padding for future extensions.
+ *
+ * PF/VF sends this message to transition to/from the loopback state. Setting
+ * the 'enable' to 1 enables the loopback state and setting 'enable' to 0
+ * disables it. CP configures the state to loopback and returns status.
+ *
+ * Associated with VIRTCHNL2_OP_LOOPBACK.
+ */
+struct virtchnl2_loopback {
+ __le32 vport_id;
+ u8 enable;
+ u8 pad[3];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_loopback);
+
+/* struct virtchnl2_mac_addr - MAC address info.
+ * @addr: MAC address.
+ * @type: MAC type. See enum virtchnl2_mac_addr_type.
+ * @pad: Padding for future extensions.
+ */
+struct virtchnl2_mac_addr {
+ u8 addr[ETH_ALEN];
+ u8 type;
+ u8 pad;
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_mac_addr);
+
+/**
+ * struct virtchnl2_mac_addr_list - List of MAC addresses.
+ * @vport_id: Vport id.
+ * @num_mac_addr: Number of MAC addresses.
+ * @pad: Padding.
+ * @mac_addr_list: List with MAC address info.
+ *
+ * PF/VF driver uses this structure to send list of MAC addresses to be
+ * added/deleted to the CP where as CP performs the action and returns the
+ * status.
+ *
+ * Associated with VIRTCHNL2_OP_ADD_MAC_ADDR and VIRTCHNL2_OP_DEL_MAC_ADDR.
+ */
+struct virtchnl2_mac_addr_list {
+ __le32 vport_id;
+ __le16 num_mac_addr;
+ u8 pad[2];
+ struct virtchnl2_mac_addr mac_addr_list[];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_mac_addr_list);
+
+/**
+ * struct virtchnl2_promisc_info - Promisc type info.
+ * @vport_id: Vport id.
+ * @flags: See enum virtchnl2_promisc_flags.
+ * @pad: Padding for future extensions.
+ *
+ * PF/VF sends vport id and flags to the CP where as CP performs the action
+ * and returns the status.
+ *
+ * Associated with VIRTCHNL2_OP_CONFIG_PROMISCUOUS_MODE.
+ */
+struct virtchnl2_promisc_info {
+ __le32 vport_id;
+ /* See VIRTCHNL2_PROMISC_FLAGS definitions */
+ __le16 flags;
+ u8 pad[2];
+};
+VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_promisc_info);
+
+#endif /* _VIRTCHNL_2_H_ */
diff --git a/drivers/net/ethernet/intel/idpf/virtchnl2_lan_desc.h b/drivers/net/ethernet/intel/idpf/virtchnl2_lan_desc.h
new file mode 100644
index 0000000..f1b577f
--- /dev/null
+++ b/drivers/net/ethernet/intel/idpf/virtchnl2_lan_desc.h
@@ -0,0 +1,451 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _VIRTCHNL2_LAN_DESC_H_
+#define _VIRTCHNL2_LAN_DESC_H_
+
+#include <linux/bits.h>
+
+/* This is an interface definition file where existing enums and their values
+ * must remain unchanged over time, so we specify explicit values for all enums.
+ */
+
+/* Transmit descriptor ID flags
+ */
+enum virtchnl2_tx_desc_ids {
+ VIRTCHNL2_TXDID_DATA = BIT(0),
+ VIRTCHNL2_TXDID_CTX = BIT(1),
+ /* TXDID bit 2 is reserved
+ * TXDID bit 3 is free for future use
+ * TXDID bit 4 is reserved
+ */
+ VIRTCHNL2_TXDID_FLEX_TSO_CTX = BIT(5),
+ /* TXDID bit 6 is reserved */
+ VIRTCHNL2_TXDID_FLEX_L2TAG1_L2TAG2 = BIT(7),
+ /* TXDID bits 8 and 9 are free for future use
+ * TXDID bit 10 is reserved
+ * TXDID bit 11 is free for future use
+ */
+ VIRTCHNL2_TXDID_FLEX_FLOW_SCHED = BIT(12),
+ /* TXDID bits 13 and 14 are free for future use */
+ VIRTCHNL2_TXDID_DESC_DONE = BIT(15),
+};
+
+/* Receive descriptor IDs */
+enum virtchnl2_rx_desc_ids {
+ VIRTCHNL2_RXDID_1_32B_BASE = 1,
+ /* FLEX_SQ_NIC and FLEX_SPLITQ share desc ids because they can be
+ * differentiated based on queue model; e.g. single queue model can
+ * only use FLEX_SQ_NIC and split queue model can only use FLEX_SPLITQ
+ * for DID 2.
+ */
+ VIRTCHNL2_RXDID_2_FLEX_SPLITQ = 2,
+ VIRTCHNL2_RXDID_2_FLEX_SQ_NIC = VIRTCHNL2_RXDID_2_FLEX_SPLITQ,
+ /* 3 through 6 are reserved */
+ VIRTCHNL2_RXDID_7_HW_RSVD = 7,
+ /* 8 through 15 are free */
+};
+
+/* Receive descriptor ID bitmasks */
+#define VIRTCHNL2_RXDID_M(bit) BIT_ULL(VIRTCHNL2_RXDID_##bit)
+
+enum virtchnl2_rx_desc_id_bitmasks {
+ VIRTCHNL2_RXDID_1_32B_BASE_M = VIRTCHNL2_RXDID_M(1_32B_BASE),
+ VIRTCHNL2_RXDID_2_FLEX_SPLITQ_M = VIRTCHNL2_RXDID_M(2_FLEX_SPLITQ),
+ VIRTCHNL2_RXDID_2_FLEX_SQ_NIC_M = VIRTCHNL2_RXDID_M(2_FLEX_SQ_NIC),
+ VIRTCHNL2_RXDID_7_HW_RSVD_M = VIRTCHNL2_RXDID_M(7_HW_RSVD),
+};
+
+/* For splitq virtchnl2_rx_flex_desc_adv_nic_3 desc members */
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_RXDID_M GENMASK(3, 0)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_UMBCAST_M GENMASK(7, 6)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_PTYPE_M GENMASK(9, 0)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_RAW_CSUM_INV_S 12
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_RAW_CSUM_INV_M \
+ BIT_ULL(VIRTCHNL2_RX_FLEX_DESC_ADV_RAW_CSUM_INV_S)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_FF0_M GENMASK(15, 13)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_LEN_PBUF_M GENMASK(13, 0)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_GEN_S 14
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_GEN_M \
+ BIT_ULL(VIRTCHNL2_RX_FLEX_DESC_ADV_GEN_S)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_BUFQ_ID_S 15
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_BUFQ_ID_M \
+ BIT_ULL(VIRTCHNL2_RX_FLEX_DESC_ADV_BUFQ_ID_S)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_LEN_HDR_M GENMASK(9, 0)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_RSC_S 10
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_RSC_M \
+ BIT_ULL(VIRTCHNL2_RX_FLEX_DESC_ADV_RSC_S)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_SPH_S 11
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_SPH_M \
+ BIT_ULL(VIRTCHNL2_RX_FLEX_DESC_ADV_SPH_S)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_FF1_S 12
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_FF1_M GENMASK(14, 12)
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_MISS_S 15
+#define VIRTCHNL2_RX_FLEX_DESC_ADV_MISS_M \
+ BIT_ULL(VIRTCHNL2_RX_FLEX_DESC_ADV_MISS_S)
+
+/* Bitmasks for splitq virtchnl2_rx_flex_desc_adv_nic_3 */
+enum virtchl2_rx_flex_desc_adv_status_error_0_qw1_bits {
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_DD_M = BIT(0),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_EOF_M = BIT(1),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_HBO_M = BIT(2),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_L3L4P_M = BIT(3),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_XSUM_IPE_M = BIT(4),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_XSUM_L4E_M = BIT(5),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_XSUM_EIPE_M = BIT(6),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_XSUM_EUDPE_M = BIT(7),
+};
+
+/* Bitmasks for splitq virtchnl2_rx_flex_desc_adv_nic_3 */
+enum virtchnl2_rx_flex_desc_adv_status_error_0_qw0_bits {
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_LPBK_M = BIT(0),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_IPV6EXADD_M = BIT(1),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_RXE_M = BIT(2),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_CRCP_M = BIT(3),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_RSS_VALID_M = BIT(4),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_L2TAG1P_M = BIT(5),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_XTRMD0_VALID_M = BIT(6),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_XTRMD1_VALID_M = BIT(7),
+};
+
+/* Bitmasks for splitq virtchnl2_rx_flex_desc_adv_nic_3 */
+enum virtchnl2_rx_flex_desc_adv_status_error_1_bits {
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS1_RSVD_M = GENMASK(1, 0),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS1_ATRAEFAIL_M = BIT(2),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS1_L2TAG2P_M = BIT(3),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS1_XTRMD2_VALID_M = BIT(4),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS1_XTRMD3_VALID_M = BIT(5),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS1_XTRMD4_VALID_M = BIT(6),
+ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS1_XTRMD5_VALID_M = BIT(7),
+};
+
+/* For singleq (flex) virtchnl2_rx_flex_desc fields
+ * For virtchnl2_rx_flex_desc.ptype_flex_flags0 member
+ */
+#define VIRTCHNL2_RX_FLEX_DESC_PTYPE_M GENMASK(9, 0)
+
+/* For virtchnl2_rx_flex_desc.pkt_len member */
+#define VIRTCHNL2_RX_FLEX_DESC_PKT_LEN_M GENMASK(13, 0)
+
+/* Bitmasks for singleq (flex) virtchnl2_rx_flex_desc */
+enum virtchnl2_rx_flex_desc_status_error_0_bits {
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_DD_M = BIT(0),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_EOF_M = BIT(1),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_HBO_M = BIT(2),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_L3L4P_M = BIT(3),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_XSUM_IPE_M = BIT(4),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_XSUM_L4E_M = BIT(5),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_XSUM_EIPE_M = BIT(6),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_XSUM_EUDPE_M = BIT(7),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_LPBK_M = BIT(8),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_IPV6EXADD_M = BIT(9),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_RXE_M = BIT(10),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_CRCP_M = BIT(11),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_RSS_VALID_M = BIT(12),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_L2TAG1P_M = BIT(13),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_XTRMD0_VALID_M = BIT(14),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS0_XTRMD1_VALID_M = BIT(15),
+};
+
+/* Bitmasks for singleq (flex) virtchnl2_rx_flex_desc */
+enum virtchnl2_rx_flex_desc_status_error_1_bits {
+ VIRTCHNL2_RX_FLEX_DESC_STATUS1_CPM_M = GENMASK(3, 0),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS1_NAT_M = BIT(4),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS1_CRYPTO_M = BIT(5),
+ /* [10:6] reserved */
+ VIRTCHNL2_RX_FLEX_DESC_STATUS1_L2TAG2P_M = BIT(11),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS1_XTRMD2_VALID_M = BIT(12),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS1_XTRMD3_VALID_M = BIT(13),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS1_XTRMD4_VALID_M = BIT(14),
+ VIRTCHNL2_RX_FLEX_DESC_STATUS1_XTRMD5_VALID_M = BIT(15),
+};
+
+/* For virtchnl2_rx_flex_desc.ts_low member */
+#define VIRTCHNL2_RX_FLEX_TSTAMP_VALID BIT(0)
+
+/* For singleq (non flex) virtchnl2_singleq_base_rx_desc legacy desc members */
+#define VIRTCHNL2_RX_BASE_DESC_QW1_LEN_PBUF_M GENMASK_ULL(51, 38)
+#define VIRTCHNL2_RX_BASE_DESC_QW1_PTYPE_M GENMASK_ULL(37, 30)
+#define VIRTCHNL2_RX_BASE_DESC_QW1_ERROR_M GENMASK_ULL(26, 19)
+#define VIRTCHNL2_RX_BASE_DESC_QW1_STATUS_M GENMASK_ULL(18, 0)
+
+/* Bitmasks for singleq (base) virtchnl2_rx_base_desc */
+enum virtchnl2_rx_base_desc_status_bits {
+ VIRTCHNL2_RX_BASE_DESC_STATUS_DD_M = BIT(0),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_EOF_M = BIT(1),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_L2TAG1P_M = BIT(2),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_L3L4P_M = BIT(3),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_CRCP_M = BIT(4),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_RSVD_M = GENMASK(7, 5),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_EXT_UDP_0_M = BIT(8),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_UMBCAST_M = GENMASK(10, 9),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_FLM_M = BIT(11),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_FLTSTAT_M = GENMASK(13, 12),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_LPBK_M = BIT(14),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_IPV6EXADD_M = BIT(15),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_RSVD1_M = GENMASK(17, 16),
+ VIRTCHNL2_RX_BASE_DESC_STATUS_INT_UDP_0_M = BIT(18),
+};
+
+/* Bitmasks for singleq (base) virtchnl2_rx_base_desc */
+enum virtchnl2_rx_base_desc_error_bits {
+ VIRTCHNL2_RX_BASE_DESC_ERROR_RXE_M = BIT(0),
+ VIRTCHNL2_RX_BASE_DESC_ERROR_ATRAEFAIL_M = BIT(1),
+ VIRTCHNL2_RX_BASE_DESC_ERROR_HBO_M = BIT(2),
+ VIRTCHNL2_RX_BASE_DESC_ERROR_L3L4E_M = GENMASK(5, 3),
+ VIRTCHNL2_RX_BASE_DESC_ERROR_IPE_M = BIT(3),
+ VIRTCHNL2_RX_BASE_DESC_ERROR_L4E_M = BIT(4),
+ VIRTCHNL2_RX_BASE_DESC_ERROR_EIPE_M = BIT(5),
+ VIRTCHNL2_RX_BASE_DESC_ERROR_OVERSIZE_M = BIT(6),
+ VIRTCHNL2_RX_BASE_DESC_ERROR_PPRS_M = BIT(7),
+};
+
+/* Bitmasks for singleq (base) virtchnl2_rx_base_desc */
+#define VIRTCHNL2_RX_BASE_DESC_FLTSTAT_RSS_HASH_M GENMASK(13, 12)
+
+/**
+ * struct virtchnl2_splitq_rx_buf_desc - SplitQ RX buffer descriptor format
+ * @qword0: RX buffer struct.
+ * @qword0.buf_id: Buffer identifier.
+ * @qword0.rsvd0: Reserved.
+ * @qword0.rsvd1: Reserved.
+ * @pkt_addr: Packet buffer address.
+ * @hdr_addr: Header buffer address.
+ * @rsvd2: Rerserved.
+ *
+ * Receive Descriptors
+ * SplitQ buffer
+ * | 16| 0|
+ * ----------------------------------------------------------------
+ * | RSV | Buffer ID |
+ * ----------------------------------------------------------------
+ * | Rx packet buffer address |
+ * ----------------------------------------------------------------
+ * | Rx header buffer address |
+ * ----------------------------------------------------------------
+ * | RSV |
+ * ----------------------------------------------------------------
+ * | 0|
+ */
+struct virtchnl2_splitq_rx_buf_desc {
+ struct {
+ __le16 buf_id;
+ __le16 rsvd0;
+ __le32 rsvd1;
+ } qword0;
+ __le64 pkt_addr;
+ __le64 hdr_addr;
+ __le64 rsvd2;
+};
+
+/**
+ * struct virtchnl2_singleq_rx_buf_desc - SingleQ RX buffer descriptor format.
+ * @pkt_addr: Packet buffer address.
+ * @hdr_addr: Header buffer address.
+ * @rsvd1: Reserved.
+ * @rsvd2: Reserved.
+ *
+ * SingleQ buffer
+ * | 0|
+ * ----------------------------------------------------------------
+ * | Rx packet buffer address |
+ * ----------------------------------------------------------------
+ * | Rx header buffer address |
+ * ----------------------------------------------------------------
+ * | RSV |
+ * ----------------------------------------------------------------
+ * | RSV |
+ * ----------------------------------------------------------------
+ * | 0|
+ */
+struct virtchnl2_singleq_rx_buf_desc {
+ __le64 pkt_addr;
+ __le64 hdr_addr;
+ __le64 rsvd1;
+ __le64 rsvd2;
+};
+
+/**
+ * struct virtchnl2_singleq_base_rx_desc - RX descriptor writeback format.
+ * @qword0: First quad word struct.
+ * @qword0.lo_dword: Lower dual word struct.
+ * @qword0.lo_dword.mirroring_status: Mirrored packet status.
+ * @qword0.lo_dword.l2tag1: Stripped L2 tag from the received packet.
+ * @qword0.hi_dword: High dual word union.
+ * @qword0.hi_dword.rss: RSS hash.
+ * @qword0.hi_dword.fd_id: Flow director filter id.
+ * @qword1: Second quad word struct.
+ * @qword1.status_error_ptype_len: Status/error/PTYPE/length.
+ * @qword2: Third quad word struct.
+ * @qword2.ext_status: Extended status.
+ * @qword2.rsvd: Reserved.
+ * @qword2.l2tag2_1: Extracted L2 tag 2 from the packet.
+ * @qword2.l2tag2_2: Reserved.
+ * @qword3: Fourth quad word struct.
+ * @qword3.reserved: Reserved.
+ * @qword3.fd_id: Flow director filter id.
+ *
+ * Profile ID 0x1, SingleQ, base writeback format
+ */
+struct virtchnl2_singleq_base_rx_desc {
+ struct {
+ struct {
+ __le16 mirroring_status;
+ __le16 l2tag1;
+ } lo_dword;
+ union {
+ __le32 rss;
+ __le32 fd_id;
+ } hi_dword;
+ } qword0;
+ struct {
+ __le64 status_error_ptype_len;
+ } qword1;
+ struct {
+ __le16 ext_status;
+ __le16 rsvd;
+ __le16 l2tag2_1;
+ __le16 l2tag2_2;
+ } qword2;
+ struct {
+ __le32 reserved;
+ __le32 fd_id;
+ } qword3;
+};
+
+/**
+ * struct virtchnl2_rx_flex_desc_nic - RX descriptor writeback format.
+ *
+ * @rxdid: Descriptor builder profile id.
+ * @mir_id_umb_cast: umb_cast=[7:6], mirror=[5:0]
+ * @ptype_flex_flags0: ff0=[15:10], ptype=[9:0]
+ * @pkt_len: Packet length, [15:14] are reserved.
+ * @hdr_len_sph_flex_flags1: ff1/ext=[15:12], sph=[11], header=[10:0].
+ * @status_error0: Status/Error section 0.
+ * @l2tag1: Stripped L2 tag from the received packet
+ * @rss_hash: RSS hash.
+ * @status_error1: Status/Error section 1.
+ * @flexi_flags2: Flexible flags section 2.
+ * @ts_low: Lower word of timestamp value.
+ * @l2tag2_1st: First L2TAG2.
+ * @l2tag2_2nd: Second L2TAG2.
+ * @flow_id: Flow id.
+ * @flex_ts: Timestamp and flexible flow id union.
+ * @flex_ts.ts_high: Timestamp higher word of the timestamp value.
+ * @flex_ts.flex.rsvd: Reserved.
+ * @flex_ts.flex.flow_id_ipv6: IPv6 flow id.
+ *
+ * Profile ID 0x2, SingleQ, flex writeback format
+ */
+struct virtchnl2_rx_flex_desc_nic {
+ /* Qword 0 */
+ u8 rxdid;
+ u8 mir_id_umb_cast;
+ __le16 ptype_flex_flags0;
+ __le16 pkt_len;
+ __le16 hdr_len_sph_flex_flags1;
+ /* Qword 1 */
+ __le16 status_error0;
+ __le16 l2tag1;
+ __le32 rss_hash;
+ /* Qword 2 */
+ __le16 status_error1;
+ u8 flexi_flags2;
+ u8 ts_low;
+ __le16 l2tag2_1st;
+ __le16 l2tag2_2nd;
+ /* Qword 3 */
+ __le32 flow_id;
+ union {
+ struct {
+ __le16 rsvd;
+ __le16 flow_id_ipv6;
+ } flex;
+ __le32 ts_high;
+ } flex_ts;
+};
+
+/**
+ * struct virtchnl2_rx_flex_desc_adv_nic_3 - RX descriptor writeback format.
+ * @rxdid_ucast: ucast=[7:6], rsvd=[5:4], profile_id=[3:0].
+ * @status_err0_qw0: Status/Error section 0 in quad word 0.
+ * @ptype_err_fflags0: ff0=[15:12], udp_len_err=[11], ip_hdr_err=[10],
+ * ptype=[9:0].
+ * @pktlen_gen_bufq_id: bufq_id=[15] only in splitq, gen=[14] only in splitq,
+ * plen=[13:0].
+ * @hdrlen_flags: miss_prepend=[15], trunc_mirr=[14], int_udp_0=[13],
+ * ext_udp0=[12], sph=[11] only in splitq, rsc=[10]
+ * only in splitq, header=[9:0].
+ * @status_err0_qw1: Status/Error section 0 in quad word 1.
+ * @status_err1: Status/Error section 1.
+ * @fflags1: Flexible flags section 1.
+ * @ts_low: Lower word of timestamp value.
+ * @buf_id: Buffer identifier. Only in splitq mode.
+ * @misc: Union.
+ * @misc.raw_cs: Raw checksum.
+ * @misc.l2tag1: Stripped L2 tag from the received packet
+ * @misc.rscseglen:
+ * @hash1: Lower bits of Rx hash value.
+ * @ff2_mirrid_hash2: Union.
+ * @ff2_mirrid_hash2.fflags2: Flexible flags section 2.
+ * @ff2_mirrid_hash2.mirrorid: Mirror id.
+ * @ff2_mirrid_hash2.rscseglen: RSC segment length.
+ * @hash3: Upper bits of Rx hash value.
+ * @l2tag2: Extracted L2 tag 2 from the packet.
+ * @fmd4: Flexible metadata container 4.
+ * @l2tag1: Stripped L2 tag from the received packet
+ * @fmd6: Flexible metadata container 6.
+ * @ts_high: Timestamp higher word of the timestamp value.
+ *
+ * Profile ID 0x2, SplitQ, flex writeback format
+ *
+ * Flex-field 0: BufferID
+ * Flex-field 1: Raw checksum/L2TAG1/RSC Seg Len (determined by HW)
+ * Flex-field 2: Hash[15:0]
+ * Flex-flags 2: Hash[23:16]
+ * Flex-field 3: L2TAG2
+ * Flex-field 5: L2TAG1
+ * Flex-field 7: Timestamp (upper 32 bits)
+ */
+struct virtchnl2_rx_flex_desc_adv_nic_3 {
+ /* Qword 0 */
+ u8 rxdid_ucast;
+ u8 status_err0_qw0;
+ __le16 ptype_err_fflags0;
+ __le16 pktlen_gen_bufq_id;
+ __le16 hdrlen_flags;
+ /* Qword 1 */
+ u8 status_err0_qw1;
+ u8 status_err1;
+ u8 fflags1;
+ u8 ts_low;
+ __le16 buf_id;
+ union {
+ __le16 raw_cs;
+ __le16 l2tag1;
+ __le16 rscseglen;
+ } misc;
+ /* Qword 2 */
+ __le16 hash1;
+ union {
+ u8 fflags2;
+ u8 mirrorid;
+ u8 hash2;
+ } ff2_mirrid_hash2;
+ u8 hash3;
+ __le16 l2tag2;
+ __le16 fmd4;
+ /* Qword 3 */
+ __le16 l2tag1;
+ __le16 fmd6;
+ __le32 ts_high;
+};
+
+/* Common union for accessing descriptor format structs */
+union virtchnl2_rx_desc {
+ struct virtchnl2_singleq_base_rx_desc base_wb;
+ struct virtchnl2_rx_flex_desc_nic flex_nic_wb;
+ struct virtchnl2_rx_flex_desc_adv_nic_3 flex_adv_nic_3_wb;
+};
+
+#endif /* _VIRTCHNL_LAN_DESC_H_ */
diff --git a/include/net/netdev_queues.h b/include/net/netdev_queues.h
new file mode 100644
index 0000000..d68b0a4
--- /dev/null
+++ b/include/net/netdev_queues.h
@@ -0,0 +1,173 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_NET_QUEUES_H
+#define _LINUX_NET_QUEUES_H
+
+#include <linux/netdevice.h>
+
+/**
+ * DOC: Lockless queue stopping / waking helpers.
+ *
+ * The netif_txq_maybe_stop() and __netif_txq_completed_wake()
+ * macros are designed to safely implement stopping
+ * and waking netdev queues without full lock protection.
+ *
+ * We assume that there can be no concurrent stop attempts and no concurrent
+ * wake attempts. The try-stop should happen from the xmit handler,
+ * while wake up should be triggered from NAPI poll context.
+ * The two may run concurrently (single producer, single consumer).
+ *
+ * The try-stop side is expected to run from the xmit handler and therefore
+ * it does not reschedule Tx (netif_tx_start_queue() instead of
+ * netif_tx_wake_queue()). Uses of the ``stop`` macros outside of the xmit
+ * handler may lead to xmit queue being enabled but not run.
+ * The waking side does not have similar context restrictions.
+ *
+ * The macros guarantee that rings will not remain stopped if there's
+ * space available, but they do *not* prevent false wake ups when
+ * the ring is full! Drivers should check for ring full at the start
+ * for the xmit handler.
+ *
+ * All descriptor ring indexes (and other relevant shared state) must
+ * be updated before invoking the macros.
+ */
+
+#define netif_txq_try_stop(txq, get_desc, start_thrs) \
+ ({ \
+ int _res; \
+ \
+ netif_tx_stop_queue(txq); \
+ /* Producer index and stop bit must be visible \
+ * to consumer before we recheck. \
+ * Pairs with a barrier in __netif_txq_completed_wake(). \
+ */ \
+ smp_mb__after_atomic(); \
+ \
+ /* We need to check again in a case another \
+ * CPU has just made room available. \
+ */ \
+ _res = 0; \
+ if (unlikely(get_desc >= start_thrs)) { \
+ netif_tx_start_queue(txq); \
+ _res = -1; \
+ } \
+ _res; \
+ }) \
+
+/**
+ * netif_txq_maybe_stop() - locklessly stop a Tx queue, if needed
+ * @txq: struct netdev_queue to stop/start
+ * @get_desc: get current number of free descriptors (see requirements below!)
+ * @stop_thrs: minimal number of available descriptors for queue to be left
+ * enabled
+ * @start_thrs: minimal number of descriptors to re-enable the queue, can be
+ * equal to @stop_thrs or higher to avoid frequent waking
+ *
+ * All arguments may be evaluated multiple times, beware of side effects.
+ * @get_desc must be a formula or a function call, it must always
+ * return up-to-date information when evaluated!
+ * Expected to be used from ndo_start_xmit, see the comment on top of the file.
+ *
+ * Returns:
+ * 0 if the queue was stopped
+ * 1 if the queue was left enabled
+ * -1 if the queue was re-enabled (raced with waking)
+ */
+#define netif_txq_maybe_stop(txq, get_desc, stop_thrs, start_thrs) \
+ ({ \
+ int _res; \
+ \
+ _res = 1; \
+ if (unlikely(get_desc < stop_thrs)) \
+ _res = netif_txq_try_stop(txq, get_desc, start_thrs); \
+ _res; \
+ }) \
+
+/* Variant of netdev_tx_completed_queue() which guarantees smp_mb() if
+ * @bytes != 0, regardless of kernel config.
+ */
+static inline void
+netdev_txq_completed_mb(struct netdev_queue *dev_queue,
+ unsigned int pkts, unsigned int bytes)
+{
+ if (IS_ENABLED(CONFIG_BQL))
+ netdev_tx_completed_queue(dev_queue, pkts, bytes);
+ else if (bytes)
+ smp_mb();
+}
+
+/**
+ * __netif_txq_completed_wake() - locklessly wake a Tx queue, if needed
+ * @txq: struct netdev_queue to stop/start
+ * @pkts: number of packets completed
+ * @bytes: number of bytes completed
+ * @get_desc: get current number of free descriptors (see requirements below!)
+ * @start_thrs: minimal number of descriptors to re-enable the queue
+ * @down_cond: down condition, predicate indicating that the queue should
+ * not be woken up even if descriptors are available
+ *
+ * All arguments may be evaluated multiple times.
+ * @get_desc must be a formula or a function call, it must always
+ * return up-to-date information when evaluated!
+ * Reports completed pkts/bytes to BQL.
+ *
+ * Returns:
+ * 0 if the queue was woken up
+ * 1 if the queue was already enabled (or disabled but @down_cond is true)
+ * -1 if the queue was left unchanged (@start_thrs not reached)
+ */
+#define __netif_txq_completed_wake(txq, pkts, bytes, \
+ get_desc, start_thrs, down_cond) \
+ ({ \
+ int _res; \
+ \
+ /* Report to BQL and piggy back on its barrier. \
+ * Barrier makes sure that anybody stopping the queue \
+ * after this point sees the new consumer index. \
+ * Pairs with barrier in netif_txq_try_stop(). \
+ */ \
+ netdev_txq_completed_mb(txq, pkts, bytes); \
+ \
+ _res = -1; \
+ if (pkts && likely(get_desc > start_thrs)) { \
+ _res = 1; \
+ if (unlikely(netif_tx_queue_stopped(txq)) && \
+ !(down_cond)) { \
+ netif_tx_wake_queue(txq); \
+ _res = 0; \
+ } \
+ } \
+ _res; \
+ })
+
+#define netif_txq_completed_wake(txq, pkts, bytes, get_desc, start_thrs) \
+ __netif_txq_completed_wake(txq, pkts, bytes, get_desc, start_thrs, false)
+
+/* subqueue variants follow */
+
+#define netif_subqueue_try_stop(dev, idx, get_desc, start_thrs) \
+ ({ \
+ struct netdev_queue *txq; \
+ \
+ txq = netdev_get_tx_queue(dev, idx); \
+ netif_txq_try_stop(txq, get_desc, start_thrs); \
+ })
+
+#define netif_subqueue_maybe_stop(dev, idx, get_desc, stop_thrs, start_thrs) \
+ ({ \
+ struct netdev_queue *txq; \
+ \
+ txq = netdev_get_tx_queue(dev, idx); \
+ netif_txq_maybe_stop(txq, get_desc, stop_thrs, start_thrs); \
+ })
+
+#define netif_subqueue_completed_wake(dev, idx, pkts, bytes, \
+ get_desc, start_thrs) \
+ ({ \
+ struct netdev_queue *txq; \
+ \
+ txq = netdev_get_tx_queue(dev, idx); \
+ netif_txq_completed_wake(txq, pkts, bytes, \
+ get_desc, start_thrs); \
+ })
+
+#endif
