| /* |
| * Copyright (C) 2017 Netronome Systems, Inc. |
| * |
| * This software is licensed under the GNU General License Version 2, |
| * June 1991 as shown in the file COPYING in the top-level directory of this |
| * source tree. |
| * |
| * THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" |
| * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, |
| * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE |
| * OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME |
| * THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. |
| */ |
| |
| #include <linux/device.h> |
| #include <linux/kernel.h> |
| #include <linux/list.h> |
| #include <linux/netdevice.h> |
| #include <linux/u64_stats_sync.h> |
| #include <net/devlink.h> |
| #include <net/xdp.h> |
| |
| #define DRV_NAME "netdevsim" |
| |
| #define NSIM_XDP_MAX_MTU 4000 |
| |
| #define NSIM_EA(extack, msg) NL_SET_ERR_MSG_MOD((extack), msg) |
| |
| #define NSIM_IPSEC_MAX_SA_COUNT 33 |
| #define NSIM_IPSEC_VALID BIT(31) |
| |
| struct nsim_sa { |
| struct xfrm_state *xs; |
| __be32 ipaddr[4]; |
| u32 key[4]; |
| u32 salt; |
| bool used; |
| bool crypt; |
| bool rx; |
| }; |
| |
| struct nsim_ipsec { |
| struct nsim_sa sa[NSIM_IPSEC_MAX_SA_COUNT]; |
| struct dentry *pfile; |
| u32 count; |
| u32 tx; |
| u32 ok; |
| }; |
| |
| struct netdevsim { |
| struct net_device *netdev; |
| struct nsim_dev *nsim_dev; |
| struct nsim_dev_port *nsim_dev_port; |
| |
| u64 tx_packets; |
| u64 tx_bytes; |
| struct u64_stats_sync syncp; |
| |
| struct nsim_bus_dev *nsim_bus_dev; |
| |
| struct bpf_prog *bpf_offloaded; |
| u32 bpf_offloaded_id; |
| |
| struct xdp_attachment_info xdp; |
| struct xdp_attachment_info xdp_hw; |
| |
| bool bpf_tc_accept; |
| bool bpf_tc_non_bound_accept; |
| bool bpf_xdpdrv_accept; |
| bool bpf_xdpoffload_accept; |
| |
| bool bpf_map_accept; |
| struct nsim_ipsec ipsec; |
| }; |
| |
| struct netdevsim * |
| nsim_create(struct nsim_dev *nsim_dev, struct nsim_dev_port *nsim_dev_port); |
| void nsim_destroy(struct netdevsim *ns); |
| |
| #ifdef CONFIG_BPF_SYSCALL |
| int nsim_bpf_dev_init(struct nsim_dev *nsim_dev); |
| void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev); |
| int nsim_bpf_init(struct netdevsim *ns); |
| void nsim_bpf_uninit(struct netdevsim *ns); |
| int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf); |
| int nsim_bpf_disable_tc(struct netdevsim *ns); |
| int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, |
| void *type_data, void *cb_priv); |
| #else |
| |
| static inline int nsim_bpf_dev_init(struct nsim_dev *nsim_dev) |
| { |
| return 0; |
| } |
| |
| static inline void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev) |
| { |
| } |
| static inline int nsim_bpf_init(struct netdevsim *ns) |
| { |
| return 0; |
| } |
| |
| static inline void nsim_bpf_uninit(struct netdevsim *ns) |
| { |
| } |
| |
| static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf) |
| { |
| return bpf->command == XDP_QUERY_PROG ? 0 : -EOPNOTSUPP; |
| } |
| |
| static inline int nsim_bpf_disable_tc(struct netdevsim *ns) |
| { |
| return 0; |
| } |
| |
| static inline int |
| nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, void *type_data, |
| void *cb_priv) |
| { |
| return -EOPNOTSUPP; |
| } |
| #endif |
| |
| enum nsim_resource_id { |
| NSIM_RESOURCE_NONE, /* DEVLINK_RESOURCE_ID_PARENT_TOP */ |
| NSIM_RESOURCE_IPV4, |
| NSIM_RESOURCE_IPV4_FIB, |
| NSIM_RESOURCE_IPV4_FIB_RULES, |
| NSIM_RESOURCE_IPV6, |
| NSIM_RESOURCE_IPV6_FIB, |
| NSIM_RESOURCE_IPV6_FIB_RULES, |
| }; |
| |
| struct nsim_dev_port { |
| struct list_head list; |
| struct devlink_port devlink_port; |
| unsigned int port_index; |
| struct dentry *ddir; |
| struct netdevsim *ns; |
| }; |
| |
| struct nsim_dev { |
| struct nsim_bus_dev *nsim_bus_dev; |
| struct nsim_fib_data *fib_data; |
| struct nsim_trap_data *trap_data; |
| struct dentry *ddir; |
| struct dentry *ports_ddir; |
| struct bpf_offload_dev *bpf_dev; |
| bool bpf_bind_accept; |
| u32 bpf_bind_verifier_delay; |
| struct dentry *ddir_bpf_bound_progs; |
| u32 prog_id_gen; |
| struct list_head bpf_bound_progs; |
| struct list_head bpf_bound_maps; |
| struct netdev_phys_item_id switch_id; |
| struct list_head port_list; |
| struct mutex port_list_lock; /* protects port list */ |
| bool fw_update_status; |
| u32 max_macs; |
| bool test1; |
| struct devlink_region *dummy_region; |
| }; |
| |
| int nsim_dev_init(void); |
| void nsim_dev_exit(void); |
| int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev); |
| void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev); |
| int nsim_dev_port_add(struct nsim_bus_dev *nsim_bus_dev, |
| unsigned int port_index); |
| int nsim_dev_port_del(struct nsim_bus_dev *nsim_bus_dev, |
| unsigned int port_index); |
| |
| int nsim_fib_init(void); |
| void nsim_fib_exit(void); |
| u64 nsim_fib_get_val(struct net *net, enum nsim_resource_id res_id, bool max); |
| int nsim_fib_set_max(struct net *net, enum nsim_resource_id res_id, u64 val, |
| struct netlink_ext_ack *extack); |
| |
| #if IS_ENABLED(CONFIG_XFRM_OFFLOAD) |
| void nsim_ipsec_init(struct netdevsim *ns); |
| void nsim_ipsec_teardown(struct netdevsim *ns); |
| bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb); |
| #else |
| static inline void nsim_ipsec_init(struct netdevsim *ns) |
| { |
| } |
| |
| static inline void nsim_ipsec_teardown(struct netdevsim *ns) |
| { |
| } |
| |
| static inline bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb) |
| { |
| return true; |
| } |
| #endif |
| |
| struct nsim_vf_config { |
| int link_state; |
| u16 min_tx_rate; |
| u16 max_tx_rate; |
| u16 vlan; |
| __be16 vlan_proto; |
| u16 qos; |
| u8 vf_mac[ETH_ALEN]; |
| bool spoofchk_enabled; |
| bool trusted; |
| bool rss_query_enabled; |
| }; |
| |
| struct nsim_bus_dev { |
| struct device dev; |
| struct list_head list; |
| unsigned int port_count; |
| unsigned int num_vfs; |
| struct nsim_vf_config *vfconfigs; |
| }; |
| |
| int nsim_bus_init(void); |
| void nsim_bus_exit(void); |