| // SPDX-License-Identifier: GPL-2.0-or-later | |
| /* | |
| * Copyright (c) 2016 Mellanox Technologies. All rights reserved. | |
| * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> | |
| */ | |
| #include "devl_internal.h" | |
| #define DEVLINK_PORT_FN_CAPS_VALID_MASK \ | |
| (_BITUL(__DEVLINK_PORT_FN_ATTR_CAPS_MAX) - 1) | |
| static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = { | |
| [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY }, | |
| [DEVLINK_PORT_FN_ATTR_STATE] = | |
| NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE, | |
| DEVLINK_PORT_FN_STATE_ACTIVE), | |
| [DEVLINK_PORT_FN_ATTR_CAPS] = | |
| NLA_POLICY_BITFIELD32(DEVLINK_PORT_FN_CAPS_VALID_MASK), | |
| [DEVLINK_PORT_FN_ATTR_MAX_IO_EQS] = { .type = NLA_U32 }, | |
| }; | |
| #define ASSERT_DEVLINK_PORT_REGISTERED(devlink_port) \ | |
| WARN_ON_ONCE(!(devlink_port)->registered) | |
| #define ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port) \ | |
| WARN_ON_ONCE((devlink_port)->registered) | |
| struct devlink_port *devlink_port_get_by_index(struct devlink *devlink, | |
| unsigned int port_index) | |
| { | |
| return xa_load(&devlink->ports, port_index); | |
| } | |
| struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink, | |
| struct nlattr **attrs) | |
| { | |
| if (attrs[DEVLINK_ATTR_PORT_INDEX]) { | |
| u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]); | |
| struct devlink_port *devlink_port; | |
| devlink_port = devlink_port_get_by_index(devlink, port_index); | |
| if (!devlink_port) | |
| return ERR_PTR(-ENODEV); | |
| return devlink_port; | |
| } | |
| return ERR_PTR(-EINVAL); | |
| } | |
| struct devlink_port *devlink_port_get_from_info(struct devlink *devlink, | |
| struct genl_info *info) | |
| { | |
| return devlink_port_get_from_attrs(devlink, info->attrs); | |
| } | |
| static void devlink_port_fn_cap_fill(struct nla_bitfield32 *caps, | |
| u32 cap, bool is_enable) | |
| { | |
| caps->selector |= cap; | |
| if (is_enable) | |
| caps->value |= cap; | |
| } | |
| static int devlink_port_fn_roce_fill(struct devlink_port *devlink_port, | |
| struct nla_bitfield32 *caps, | |
| struct netlink_ext_ack *extack) | |
| { | |
| bool is_enable; | |
| int err; | |
| if (!devlink_port->ops->port_fn_roce_get) | |
| return 0; | |
| err = devlink_port->ops->port_fn_roce_get(devlink_port, &is_enable, | |
| extack); | |
| if (err) { | |
| if (err == -EOPNOTSUPP) | |
| return 0; | |
| return err; | |
| } | |
| devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_ROCE, is_enable); | |
| return 0; | |
| } | |
| static int devlink_port_fn_migratable_fill(struct devlink_port *devlink_port, | |
| struct nla_bitfield32 *caps, | |
| struct netlink_ext_ack *extack) | |
| { | |
| bool is_enable; | |
| int err; | |
| if (!devlink_port->ops->port_fn_migratable_get || | |
| devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) | |
| return 0; | |
| err = devlink_port->ops->port_fn_migratable_get(devlink_port, | |
| &is_enable, extack); | |
| if (err) { | |
| if (err == -EOPNOTSUPP) | |
| return 0; | |
| return err; | |
| } | |
| devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_MIGRATABLE, is_enable); | |
| return 0; | |
| } | |
| static int devlink_port_fn_ipsec_crypto_fill(struct devlink_port *devlink_port, | |
| struct nla_bitfield32 *caps, | |
| struct netlink_ext_ack *extack) | |
| { | |
| bool is_enable; | |
| int err; | |
| if (!devlink_port->ops->port_fn_ipsec_crypto_get || | |
| devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) | |
| return 0; | |
| err = devlink_port->ops->port_fn_ipsec_crypto_get(devlink_port, &is_enable, extack); | |
| if (err) { | |
| if (err == -EOPNOTSUPP) | |
| return 0; | |
| return err; | |
| } | |
| devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_IPSEC_CRYPTO, is_enable); | |
| return 0; | |
| } | |
| static int devlink_port_fn_ipsec_packet_fill(struct devlink_port *devlink_port, | |
| struct nla_bitfield32 *caps, | |
| struct netlink_ext_ack *extack) | |
| { | |
| bool is_enable; | |
| int err; | |
| if (!devlink_port->ops->port_fn_ipsec_packet_get || | |
| devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) | |
| return 0; | |
| err = devlink_port->ops->port_fn_ipsec_packet_get(devlink_port, &is_enable, extack); | |
| if (err) { | |
| if (err == -EOPNOTSUPP) | |
| return 0; | |
| return err; | |
| } | |
| devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_IPSEC_PACKET, is_enable); | |
| return 0; | |
| } | |
| static int devlink_port_fn_caps_fill(struct devlink_port *devlink_port, | |
| struct sk_buff *msg, | |
| struct netlink_ext_ack *extack, | |
| bool *msg_updated) | |
| { | |
| struct nla_bitfield32 caps = {}; | |
| int err; | |
| err = devlink_port_fn_roce_fill(devlink_port, &caps, extack); | |
| if (err) | |
| return err; | |
| err = devlink_port_fn_migratable_fill(devlink_port, &caps, extack); | |
| if (err) | |
| return err; | |
| err = devlink_port_fn_ipsec_crypto_fill(devlink_port, &caps, extack); | |
| if (err) | |
| return err; | |
| err = devlink_port_fn_ipsec_packet_fill(devlink_port, &caps, extack); | |
| if (err) | |
| return err; | |
| if (!caps.selector) | |
| return 0; | |
| err = nla_put_bitfield32(msg, DEVLINK_PORT_FN_ATTR_CAPS, caps.value, | |
| caps.selector); | |
| if (err) | |
| return err; | |
| *msg_updated = true; | |
| return 0; | |
| } | |
| static int devlink_port_fn_max_io_eqs_fill(struct devlink_port *port, | |
| struct sk_buff *msg, | |
| struct netlink_ext_ack *extack, | |
| bool *msg_updated) | |
| { | |
| u32 max_io_eqs; | |
| int err; | |
| if (!port->ops->port_fn_max_io_eqs_get) | |
| return 0; | |
| err = port->ops->port_fn_max_io_eqs_get(port, &max_io_eqs, extack); | |
| if (err) { | |
| if (err == -EOPNOTSUPP) | |
| return 0; | |
| return err; | |
| } | |
| err = nla_put_u32(msg, DEVLINK_PORT_FN_ATTR_MAX_IO_EQS, max_io_eqs); | |
| if (err) | |
| return err; | |
| *msg_updated = true; | |
| return 0; | |
| } | |
| int devlink_nl_port_handle_fill(struct sk_buff *msg, struct devlink_port *devlink_port) | |
| { | |
| if (devlink_nl_put_handle(msg, devlink_port->devlink)) | |
| return -EMSGSIZE; | |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
| return -EMSGSIZE; | |
| return 0; | |
| } | |
| size_t devlink_nl_port_handle_size(struct devlink_port *devlink_port) | |
| { | |
| struct devlink *devlink = devlink_port->devlink; | |
| return nla_total_size(strlen(devlink->dev->bus->name) + 1) /* DEVLINK_ATTR_BUS_NAME */ | |
| + nla_total_size(strlen(dev_name(devlink->dev)) + 1) /* DEVLINK_ATTR_DEV_NAME */ | |
| + nla_total_size(4); /* DEVLINK_ATTR_PORT_INDEX */ | |
| } | |
| static int devlink_nl_port_attrs_put(struct sk_buff *msg, | |
| struct devlink_port *devlink_port) | |
| { | |
| struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
| if (!devlink_port->attrs_set) | |
| return 0; | |
| if (attrs->lanes) { | |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes)) | |
| return -EMSGSIZE; | |
| } | |
| if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable)) | |
| return -EMSGSIZE; | |
| if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour)) | |
| return -EMSGSIZE; | |
| switch (devlink_port->attrs.flavour) { | |
| case DEVLINK_PORT_FLAVOUR_PCI_PF: | |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, | |
| attrs->pci_pf.controller) || | |
| nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf)) | |
| return -EMSGSIZE; | |
| if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external)) | |
| return -EMSGSIZE; | |
| break; | |
| case DEVLINK_PORT_FLAVOUR_PCI_VF: | |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, | |
| attrs->pci_vf.controller) || | |
| nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) || | |
| nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf)) | |
| return -EMSGSIZE; | |
| if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external)) | |
| return -EMSGSIZE; | |
| break; | |
| case DEVLINK_PORT_FLAVOUR_PCI_SF: | |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, | |
| attrs->pci_sf.controller) || | |
| nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, | |
| attrs->pci_sf.pf) || | |
| nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER, | |
| attrs->pci_sf.sf)) | |
| return -EMSGSIZE; | |
| break; | |
| case DEVLINK_PORT_FLAVOUR_PHYSICAL: | |
| case DEVLINK_PORT_FLAVOUR_CPU: | |
| case DEVLINK_PORT_FLAVOUR_DSA: | |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER, | |
| attrs->phys.port_number)) | |
| return -EMSGSIZE; | |
| if (!attrs->split) | |
| return 0; | |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP, | |
| attrs->phys.port_number)) | |
| return -EMSGSIZE; | |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER, | |
| attrs->phys.split_subport_number)) | |
| return -EMSGSIZE; | |
| break; | |
| default: | |
| break; | |
| } | |
| return 0; | |
| } | |
| static int devlink_port_fn_hw_addr_fill(struct devlink_port *port, | |
| struct sk_buff *msg, | |
| struct netlink_ext_ack *extack, | |
| bool *msg_updated) | |
| { | |
| u8 hw_addr[MAX_ADDR_LEN]; | |
| int hw_addr_len; | |
| int err; | |
| if (!port->ops->port_fn_hw_addr_get) | |
| return 0; | |
| err = port->ops->port_fn_hw_addr_get(port, hw_addr, &hw_addr_len, | |
| extack); | |
| if (err) { | |
| if (err == -EOPNOTSUPP) | |
| return 0; | |
| return err; | |
| } | |
| err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr); | |
| if (err) | |
| return err; | |
| *msg_updated = true; | |
| return 0; | |
| } | |
| static bool | |
| devlink_port_fn_state_valid(enum devlink_port_fn_state state) | |
| { | |
| return state == DEVLINK_PORT_FN_STATE_INACTIVE || | |
| state == DEVLINK_PORT_FN_STATE_ACTIVE; | |
| } | |
| static bool | |
| devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate) | |
| { | |
| return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED || | |
| opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED; | |
| } | |
| static int devlink_port_fn_state_fill(struct devlink_port *port, | |
| struct sk_buff *msg, | |
| struct netlink_ext_ack *extack, | |
| bool *msg_updated) | |
| { | |
| enum devlink_port_fn_opstate opstate; | |
| enum devlink_port_fn_state state; | |
| int err; | |
| if (!port->ops->port_fn_state_get) | |
| return 0; | |
| err = port->ops->port_fn_state_get(port, &state, &opstate, extack); | |
| if (err) { | |
| if (err == -EOPNOTSUPP) | |
| return 0; | |
| return err; | |
| } | |
| if (!devlink_port_fn_state_valid(state)) { | |
| WARN_ON_ONCE(1); | |
| NL_SET_ERR_MSG(extack, "Invalid state read from driver"); | |
| return -EINVAL; | |
| } | |
| if (!devlink_port_fn_opstate_valid(opstate)) { | |
| WARN_ON_ONCE(1); | |
| NL_SET_ERR_MSG(extack, "Invalid operational state read from driver"); | |
| return -EINVAL; | |
| } | |
| if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) || | |
| nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate)) | |
| return -EMSGSIZE; | |
| *msg_updated = true; | |
| return 0; | |
| } | |
| static int | |
| devlink_port_fn_mig_set(struct devlink_port *devlink_port, bool enable, | |
| struct netlink_ext_ack *extack) | |
| { | |
| return devlink_port->ops->port_fn_migratable_set(devlink_port, enable, | |
| extack); | |
| } | |
| static int | |
| devlink_port_fn_roce_set(struct devlink_port *devlink_port, bool enable, | |
| struct netlink_ext_ack *extack) | |
| { | |
| return devlink_port->ops->port_fn_roce_set(devlink_port, enable, | |
| extack); | |
| } | |
| static int | |
| devlink_port_fn_ipsec_crypto_set(struct devlink_port *devlink_port, bool enable, | |
| struct netlink_ext_ack *extack) | |
| { | |
| return devlink_port->ops->port_fn_ipsec_crypto_set(devlink_port, enable, extack); | |
| } | |
| static int | |
| devlink_port_fn_ipsec_packet_set(struct devlink_port *devlink_port, bool enable, | |
| struct netlink_ext_ack *extack) | |
| { | |
| return devlink_port->ops->port_fn_ipsec_packet_set(devlink_port, enable, extack); | |
| } | |
| static int devlink_port_fn_caps_set(struct devlink_port *devlink_port, | |
| const struct nlattr *attr, | |
| struct netlink_ext_ack *extack) | |
| { | |
| struct nla_bitfield32 caps; | |
| u32 caps_value; | |
| int err; | |
| caps = nla_get_bitfield32(attr); | |
| caps_value = caps.value & caps.selector; | |
| if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE) { | |
| err = devlink_port_fn_roce_set(devlink_port, | |
| caps_value & DEVLINK_PORT_FN_CAP_ROCE, | |
| extack); | |
| if (err) | |
| return err; | |
| } | |
| if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) { | |
| err = devlink_port_fn_mig_set(devlink_port, caps_value & | |
| DEVLINK_PORT_FN_CAP_MIGRATABLE, | |
| extack); | |
| if (err) | |
| return err; | |
| } | |
| if (caps.selector & DEVLINK_PORT_FN_CAP_IPSEC_CRYPTO) { | |
| err = devlink_port_fn_ipsec_crypto_set(devlink_port, caps_value & | |
| DEVLINK_PORT_FN_CAP_IPSEC_CRYPTO, | |
| extack); | |
| if (err) | |
| return err; | |
| } | |
| if (caps.selector & DEVLINK_PORT_FN_CAP_IPSEC_PACKET) { | |
| err = devlink_port_fn_ipsec_packet_set(devlink_port, caps_value & | |
| DEVLINK_PORT_FN_CAP_IPSEC_PACKET, | |
| extack); | |
| if (err) | |
| return err; | |
| } | |
| return 0; | |
| } | |
| static int | |
| devlink_port_fn_max_io_eqs_set(struct devlink_port *devlink_port, | |
| const struct nlattr *attr, | |
| struct netlink_ext_ack *extack) | |
| { | |
| u32 max_io_eqs; | |
| max_io_eqs = nla_get_u32(attr); | |
| return devlink_port->ops->port_fn_max_io_eqs_set(devlink_port, | |
| max_io_eqs, extack); | |
| } | |
| static int | |
| devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port, | |
| struct netlink_ext_ack *extack) | |
| { | |
| struct nlattr *function_attr; | |
| bool msg_updated = false; | |
| int err; | |
| function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION); | |
| if (!function_attr) | |
| return -EMSGSIZE; | |
| err = devlink_port_fn_hw_addr_fill(port, msg, extack, &msg_updated); | |
| if (err) | |
| goto out; | |
| err = devlink_port_fn_caps_fill(port, msg, extack, &msg_updated); | |
| if (err) | |
| goto out; | |
| err = devlink_port_fn_state_fill(port, msg, extack, &msg_updated); | |
| if (err) | |
| goto out; | |
| err = devlink_port_fn_max_io_eqs_fill(port, msg, extack, &msg_updated); | |
| if (err) | |
| goto out; | |
| err = devlink_rel_devlink_handle_put(msg, port->devlink, | |
| port->rel_index, | |
| DEVLINK_PORT_FN_ATTR_DEVLINK, | |
| &msg_updated); | |
| out: | |
| if (err || !msg_updated) | |
| nla_nest_cancel(msg, function_attr); | |
| else | |
| nla_nest_end(msg, function_attr); | |
| return err; | |
| } | |
| static int devlink_nl_port_fill(struct sk_buff *msg, | |
| struct devlink_port *devlink_port, | |
| enum devlink_command cmd, u32 portid, u32 seq, | |
| int flags, struct netlink_ext_ack *extack) | |
| { | |
| struct devlink *devlink = devlink_port->devlink; | |
| void *hdr; | |
| hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
| if (!hdr) | |
| return -EMSGSIZE; | |
| if (devlink_nl_put_handle(msg, devlink)) | |
| goto nla_put_failure; | |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
| goto nla_put_failure; | |
| spin_lock_bh(&devlink_port->type_lock); | |
| if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type)) | |
| goto nla_put_failure_type_locked; | |
| if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET && | |
| nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE, | |
| devlink_port->desired_type)) | |
| goto nla_put_failure_type_locked; | |
| if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) { | |
| if (devlink_port->type_eth.netdev && | |
| (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX, | |
| devlink_port->type_eth.ifindex) || | |
| nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME, | |
| devlink_port->type_eth.ifname))) | |
| goto nla_put_failure_type_locked; | |
| } | |
| if (devlink_port->type == DEVLINK_PORT_TYPE_IB) { | |
| struct ib_device *ibdev = devlink_port->type_ib.ibdev; | |
| if (ibdev && | |
| nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME, | |
| ibdev->name)) | |
| goto nla_put_failure_type_locked; | |
| } | |
| spin_unlock_bh(&devlink_port->type_lock); | |
| if (devlink_nl_port_attrs_put(msg, devlink_port)) | |
| goto nla_put_failure; | |
| if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack)) | |
| goto nla_put_failure; | |
| if (devlink_port->linecard && | |
| nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX, | |
| devlink_linecard_index(devlink_port->linecard))) | |
| goto nla_put_failure; | |
| genlmsg_end(msg, hdr); | |
| return 0; | |
| nla_put_failure_type_locked: | |
| spin_unlock_bh(&devlink_port->type_lock); | |
| nla_put_failure: | |
| genlmsg_cancel(msg, hdr); | |
| return -EMSGSIZE; | |
| } | |
| static void devlink_port_notify(struct devlink_port *devlink_port, | |
| enum devlink_command cmd) | |
| { | |
| struct devlink *devlink = devlink_port->devlink; | |
| struct devlink_obj_desc desc; | |
| struct sk_buff *msg; | |
| int err; | |
| WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL); | |
| if (!__devl_is_registered(devlink) || !devlink_nl_notify_need(devlink)) | |
| return; | |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
| if (!msg) | |
| return; | |
| err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL); | |
| if (err) { | |
| nlmsg_free(msg); | |
| return; | |
| } | |
| devlink_nl_obj_desc_init(&desc, devlink); | |
| devlink_nl_obj_desc_port_set(&desc, devlink_port); | |
| devlink_nl_notify_send_desc(devlink, msg, &desc); | |
| } | |
| static void devlink_ports_notify(struct devlink *devlink, | |
| enum devlink_command cmd) | |
| { | |
| struct devlink_port *devlink_port; | |
| unsigned long port_index; | |
| xa_for_each(&devlink->ports, port_index, devlink_port) | |
| devlink_port_notify(devlink_port, cmd); | |
| } | |
| void devlink_ports_notify_register(struct devlink *devlink) | |
| { | |
| devlink_ports_notify(devlink, DEVLINK_CMD_PORT_NEW); | |
| } | |
| void devlink_ports_notify_unregister(struct devlink *devlink) | |
| { | |
| devlink_ports_notify(devlink, DEVLINK_CMD_PORT_DEL); | |
| } | |
| int devlink_nl_port_get_doit(struct sk_buff *skb, struct genl_info *info) | |
| { | |
| struct devlink_port *devlink_port = info->user_ptr[1]; | |
| struct sk_buff *msg; | |
| int err; | |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
| if (!msg) | |
| return -ENOMEM; | |
| err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW, | |
| info->snd_portid, info->snd_seq, 0, | |
| info->extack); | |
| if (err) { | |
| nlmsg_free(msg); | |
| return err; | |
| } | |
| return genlmsg_reply(msg, info); | |
| } | |
| static int | |
| devlink_nl_port_get_dump_one(struct sk_buff *msg, struct devlink *devlink, | |
| struct netlink_callback *cb, int flags) | |
| { | |
| struct devlink_nl_dump_state *state = devlink_dump_state(cb); | |
| struct devlink_port *devlink_port; | |
| unsigned long port_index; | |
| int err = 0; | |
| xa_for_each_start(&devlink->ports, port_index, devlink_port, state->idx) { | |
| err = devlink_nl_port_fill(msg, devlink_port, | |
| DEVLINK_CMD_PORT_NEW, | |
| NETLINK_CB(cb->skb).portid, | |
| cb->nlh->nlmsg_seq, flags, | |
| cb->extack); | |
| if (err) { | |
| state->idx = port_index; | |
| break; | |
| } | |
| } | |
| return err; | |
| } | |
| int devlink_nl_port_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) | |
| { | |
| return devlink_nl_dumpit(skb, cb, devlink_nl_port_get_dump_one); | |
| } | |
| static int devlink_port_type_set(struct devlink_port *devlink_port, | |
| enum devlink_port_type port_type) | |
| { | |
| int err; | |
| if (!devlink_port->ops->port_type_set) | |
| return -EOPNOTSUPP; | |
| if (port_type == devlink_port->type) | |
| return 0; | |
| err = devlink_port->ops->port_type_set(devlink_port, port_type); | |
| if (err) | |
| return err; | |
| devlink_port->desired_type = port_type; | |
| devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); | |
| return 0; | |
| } | |
| static int devlink_port_function_hw_addr_set(struct devlink_port *port, | |
| const struct nlattr *attr, | |
| struct netlink_ext_ack *extack) | |
| { | |
| const u8 *hw_addr; | |
| int hw_addr_len; | |
| hw_addr = nla_data(attr); | |
| hw_addr_len = nla_len(attr); | |
| if (hw_addr_len > MAX_ADDR_LEN) { | |
| NL_SET_ERR_MSG(extack, "Port function hardware address too long"); | |
| return -EINVAL; | |
| } | |
| if (port->type == DEVLINK_PORT_TYPE_ETH) { | |
| if (hw_addr_len != ETH_ALEN) { | |
| NL_SET_ERR_MSG(extack, "Address must be 6 bytes for Ethernet device"); | |
| return -EINVAL; | |
| } | |
| if (!is_unicast_ether_addr(hw_addr)) { | |
| NL_SET_ERR_MSG(extack, "Non-unicast hardware address unsupported"); | |
| return -EINVAL; | |
| } | |
| } | |
| return port->ops->port_fn_hw_addr_set(port, hw_addr, hw_addr_len, | |
| extack); | |
| } | |
| static int devlink_port_fn_state_set(struct devlink_port *port, | |
| const struct nlattr *attr, | |
| struct netlink_ext_ack *extack) | |
| { | |
| enum devlink_port_fn_state state; | |
| state = nla_get_u8(attr); | |
| return port->ops->port_fn_state_set(port, state, extack); | |
| } | |
| static int devlink_port_function_validate(struct devlink_port *devlink_port, | |
| struct nlattr **tb, | |
| struct netlink_ext_ack *extack) | |
| { | |
| const struct devlink_port_ops *ops = devlink_port->ops; | |
| struct nlattr *attr; | |
| if (tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] && | |
| !ops->port_fn_hw_addr_set) { | |
| NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR], | |
| "Port doesn't support function attributes"); | |
| return -EOPNOTSUPP; | |
| } | |
| if (tb[DEVLINK_PORT_FN_ATTR_STATE] && !ops->port_fn_state_set) { | |
| NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FN_ATTR_STATE], | |
| "Function does not support state setting"); | |
| return -EOPNOTSUPP; | |
| } | |
| attr = tb[DEVLINK_PORT_FN_ATTR_CAPS]; | |
| if (attr) { | |
| struct nla_bitfield32 caps; | |
| caps = nla_get_bitfield32(attr); | |
| if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE && | |
| !ops->port_fn_roce_set) { | |
| NL_SET_ERR_MSG_ATTR(extack, attr, | |
| "Port doesn't support RoCE function attribute"); | |
| return -EOPNOTSUPP; | |
| } | |
| if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) { | |
| if (!ops->port_fn_migratable_set) { | |
| NL_SET_ERR_MSG_ATTR(extack, attr, | |
| "Port doesn't support migratable function attribute"); | |
| return -EOPNOTSUPP; | |
| } | |
| if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) { | |
| NL_SET_ERR_MSG_ATTR(extack, attr, | |
| "migratable function attribute supported for VFs only"); | |
| return -EOPNOTSUPP; | |
| } | |
| } | |
| if (caps.selector & DEVLINK_PORT_FN_CAP_IPSEC_CRYPTO) { | |
| if (!ops->port_fn_ipsec_crypto_set) { | |
| NL_SET_ERR_MSG_ATTR(extack, attr, | |
| "Port doesn't support ipsec_crypto function attribute"); | |
| return -EOPNOTSUPP; | |
| } | |
| if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) { | |
| NL_SET_ERR_MSG_ATTR(extack, attr, | |
| "ipsec_crypto function attribute supported for VFs only"); | |
| return -EOPNOTSUPP; | |
| } | |
| } | |
| if (caps.selector & DEVLINK_PORT_FN_CAP_IPSEC_PACKET) { | |
| if (!ops->port_fn_ipsec_packet_set) { | |
| NL_SET_ERR_MSG_ATTR(extack, attr, | |
| "Port doesn't support ipsec_packet function attribute"); | |
| return -EOPNOTSUPP; | |
| } | |
| if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) { | |
| NL_SET_ERR_MSG_ATTR(extack, attr, | |
| "ipsec_packet function attribute supported for VFs only"); | |
| return -EOPNOTSUPP; | |
| } | |
| } | |
| } | |
| if (tb[DEVLINK_PORT_FN_ATTR_MAX_IO_EQS] && | |
| !ops->port_fn_max_io_eqs_set) { | |
| NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FN_ATTR_MAX_IO_EQS], | |
| "Function does not support max_io_eqs setting"); | |
| return -EOPNOTSUPP; | |
| } | |
| return 0; | |
| } | |
| static int devlink_port_function_set(struct devlink_port *port, | |
| const struct nlattr *attr, | |
| struct netlink_ext_ack *extack) | |
| { | |
| struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1]; | |
| int err; | |
| err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr, | |
| devlink_function_nl_policy, extack); | |
| if (err < 0) { | |
| NL_SET_ERR_MSG(extack, "Fail to parse port function attributes"); | |
| return err; | |
| } | |
| err = devlink_port_function_validate(port, tb, extack); | |
| if (err) | |
| return err; | |
| attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR]; | |
| if (attr) { | |
| err = devlink_port_function_hw_addr_set(port, attr, extack); | |
| if (err) | |
| return err; | |
| } | |
| attr = tb[DEVLINK_PORT_FN_ATTR_CAPS]; | |
| if (attr) { | |
| err = devlink_port_fn_caps_set(port, attr, extack); | |
| if (err) | |
| return err; | |
| } | |
| attr = tb[DEVLINK_PORT_FN_ATTR_MAX_IO_EQS]; | |
| if (attr) { | |
| err = devlink_port_fn_max_io_eqs_set(port, attr, extack); | |
| if (err) | |
| return err; | |
| } | |
| /* Keep this as the last function attribute set, so that when | |
| * multiple port function attributes are set along with state, | |
| * Those can be applied first before activating the state. | |
| */ | |
| attr = tb[DEVLINK_PORT_FN_ATTR_STATE]; | |
| if (attr) | |
| err = devlink_port_fn_state_set(port, attr, extack); | |
| if (!err) | |
| devlink_port_notify(port, DEVLINK_CMD_PORT_NEW); | |
| return err; | |
| } | |
| int devlink_nl_port_set_doit(struct sk_buff *skb, struct genl_info *info) | |
| { | |
| struct devlink_port *devlink_port = info->user_ptr[1]; | |
| int err; | |
| if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) { | |
| enum devlink_port_type port_type; | |
| port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]); | |
| err = devlink_port_type_set(devlink_port, port_type); | |
| if (err) | |
| return err; | |
| } | |
| if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) { | |
| struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION]; | |
| struct netlink_ext_ack *extack = info->extack; | |
| err = devlink_port_function_set(devlink_port, attr, extack); | |
| if (err) | |
| return err; | |
| } | |
| return 0; | |
| } | |
| int devlink_nl_port_split_doit(struct sk_buff *skb, struct genl_info *info) | |
| { | |
| struct devlink_port *devlink_port = info->user_ptr[1]; | |
| struct devlink *devlink = info->user_ptr[0]; | |
| u32 count; | |
| if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_SPLIT_COUNT)) | |
| return -EINVAL; | |
| if (!devlink_port->ops->port_split) | |
| return -EOPNOTSUPP; | |
| count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]); | |
| if (!devlink_port->attrs.splittable) { | |
| /* Split ports cannot be split. */ | |
| if (devlink_port->attrs.split) | |
| NL_SET_ERR_MSG(info->extack, "Port cannot be split further"); | |
| else | |
| NL_SET_ERR_MSG(info->extack, "Port cannot be split"); | |
| return -EINVAL; | |
| } | |
| if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) { | |
| NL_SET_ERR_MSG(info->extack, "Invalid split count"); | |
| return -EINVAL; | |
| } | |
| return devlink_port->ops->port_split(devlink, devlink_port, count, | |
| info->extack); | |
| } | |
| int devlink_nl_port_unsplit_doit(struct sk_buff *skb, struct genl_info *info) | |
| { | |
| struct devlink_port *devlink_port = info->user_ptr[1]; | |
| struct devlink *devlink = info->user_ptr[0]; | |
| if (!devlink_port->ops->port_unsplit) | |
| return -EOPNOTSUPP; | |
| return devlink_port->ops->port_unsplit(devlink, devlink_port, info->extack); | |
| } | |
| int devlink_nl_port_new_doit(struct sk_buff *skb, struct genl_info *info) | |
| { | |
| struct netlink_ext_ack *extack = info->extack; | |
| struct devlink_port_new_attrs new_attrs = {}; | |
| struct devlink *devlink = info->user_ptr[0]; | |
| struct devlink_port *devlink_port; | |
| struct sk_buff *msg; | |
| int err; | |
| if (!devlink->ops->port_new) | |
| return -EOPNOTSUPP; | |
| if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] || | |
| !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) { | |
| NL_SET_ERR_MSG(extack, "Port flavour or PCI PF are not specified"); | |
| return -EINVAL; | |
| } | |
| new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]); | |
| new_attrs.pfnum = | |
| nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]); | |
| if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) { | |
| /* Port index of the new port being created by driver. */ | |
| new_attrs.port_index = | |
| nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); | |
| new_attrs.port_index_valid = true; | |
| } | |
| if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) { | |
| new_attrs.controller = | |
| nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]); | |
| new_attrs.controller_valid = true; | |
| } | |
| if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF && | |
| info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) { | |
| new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]); | |
| new_attrs.sfnum_valid = true; | |
| } | |
| err = devlink->ops->port_new(devlink, &new_attrs, | |
| extack, &devlink_port); | |
| if (err) | |
| return err; | |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
| if (!msg) { | |
| err = -ENOMEM; | |
| goto err_out_port_del; | |
| } | |
| err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW, | |
| info->snd_portid, info->snd_seq, 0, NULL); | |
| if (WARN_ON_ONCE(err)) | |
| goto err_out_msg_free; | |
| err = genlmsg_reply(msg, info); | |
| if (err) | |
| goto err_out_port_del; | |
| return 0; | |
| err_out_msg_free: | |
| nlmsg_free(msg); | |
| err_out_port_del: | |
| devlink_port->ops->port_del(devlink, devlink_port, NULL); | |
| return err; | |
| } | |
| int devlink_nl_port_del_doit(struct sk_buff *skb, struct genl_info *info) | |
| { | |
| struct devlink_port *devlink_port = info->user_ptr[1]; | |
| struct netlink_ext_ack *extack = info->extack; | |
| struct devlink *devlink = info->user_ptr[0]; | |
| if (!devlink_port->ops->port_del) | |
| return -EOPNOTSUPP; | |
| return devlink_port->ops->port_del(devlink, devlink_port, extack); | |
| } | |
| static void devlink_port_type_warn(struct work_struct *work) | |
| { | |
| struct devlink_port *port = container_of(to_delayed_work(work), | |
| struct devlink_port, | |
| type_warn_dw); | |
| dev_warn(port->devlink->dev, "Type was not set for devlink port."); | |
| } | |
| static bool devlink_port_type_should_warn(struct devlink_port *devlink_port) | |
| { | |
| /* Ignore CPU and DSA flavours. */ | |
| return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU && | |
| devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA && | |
| devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED; | |
| } | |
| #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600) | |
| static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port) | |
| { | |
| if (!devlink_port_type_should_warn(devlink_port)) | |
| return; | |
| /* Schedule a work to WARN in case driver does not set port | |
| * type within timeout. | |
| */ | |
| schedule_delayed_work(&devlink_port->type_warn_dw, | |
| DEVLINK_PORT_TYPE_WARN_TIMEOUT); | |
| } | |
| static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port) | |
| { | |
| if (!devlink_port_type_should_warn(devlink_port)) | |
| return; | |
| cancel_delayed_work_sync(&devlink_port->type_warn_dw); | |
| } | |
| /** | |
| * devlink_port_init() - Init devlink port | |
| * | |
| * @devlink: devlink | |
| * @devlink_port: devlink port | |
| * | |
| * Initialize essential stuff that is needed for functions | |
| * that may be called before devlink port registration. | |
| * Call to this function is optional and not needed | |
| * in case the driver does not use such functions. | |
| */ | |
| void devlink_port_init(struct devlink *devlink, | |
| struct devlink_port *devlink_port) | |
| { | |
| if (devlink_port->initialized) | |
| return; | |
| devlink_port->devlink = devlink; | |
| INIT_LIST_HEAD(&devlink_port->region_list); | |
| devlink_port->initialized = true; | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_init); | |
| /** | |
| * devlink_port_fini() - Deinitialize devlink port | |
| * | |
| * @devlink_port: devlink port | |
| * | |
| * Deinitialize essential stuff that is in use for functions | |
| * that may be called after devlink port unregistration. | |
| * Call to this function is optional and not needed | |
| * in case the driver does not use such functions. | |
| */ | |
| void devlink_port_fini(struct devlink_port *devlink_port) | |
| { | |
| WARN_ON(!list_empty(&devlink_port->region_list)); | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_fini); | |
| static const struct devlink_port_ops devlink_port_dummy_ops = {}; | |
| /** | |
| * devl_port_register_with_ops() - Register devlink port | |
| * | |
| * @devlink: devlink | |
| * @devlink_port: devlink port | |
| * @port_index: driver-specific numerical identifier of the port | |
| * @ops: port ops | |
| * | |
| * Register devlink port with provided port index. User can use | |
| * any indexing, even hw-related one. devlink_port structure | |
| * is convenient to be embedded inside user driver private structure. | |
| * Note that the caller should take care of zeroing the devlink_port | |
| * structure. | |
| */ | |
| int devl_port_register_with_ops(struct devlink *devlink, | |
| struct devlink_port *devlink_port, | |
| unsigned int port_index, | |
| const struct devlink_port_ops *ops) | |
| { | |
| int err; | |
| devl_assert_locked(devlink); | |
| ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port); | |
| devlink_port_init(devlink, devlink_port); | |
| devlink_port->registered = true; | |
| devlink_port->index = port_index; | |
| devlink_port->ops = ops ? ops : &devlink_port_dummy_ops; | |
| spin_lock_init(&devlink_port->type_lock); | |
| INIT_LIST_HEAD(&devlink_port->reporter_list); | |
| err = xa_insert(&devlink->ports, port_index, devlink_port, GFP_KERNEL); | |
| if (err) { | |
| devlink_port->registered = false; | |
| return err; | |
| } | |
| INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn); | |
| devlink_port_type_warn_schedule(devlink_port); | |
| devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); | |
| return 0; | |
| } | |
| EXPORT_SYMBOL_GPL(devl_port_register_with_ops); | |
| /** | |
| * devlink_port_register_with_ops - Register devlink port | |
| * | |
| * @devlink: devlink | |
| * @devlink_port: devlink port | |
| * @port_index: driver-specific numerical identifier of the port | |
| * @ops: port ops | |
| * | |
| * Register devlink port with provided port index. User can use | |
| * any indexing, even hw-related one. devlink_port structure | |
| * is convenient to be embedded inside user driver private structure. | |
| * Note that the caller should take care of zeroing the devlink_port | |
| * structure. | |
| * | |
| * Context: Takes and release devlink->lock <mutex>. | |
| */ | |
| int devlink_port_register_with_ops(struct devlink *devlink, | |
| struct devlink_port *devlink_port, | |
| unsigned int port_index, | |
| const struct devlink_port_ops *ops) | |
| { | |
| int err; | |
| devl_lock(devlink); | |
| err = devl_port_register_with_ops(devlink, devlink_port, | |
| port_index, ops); | |
| devl_unlock(devlink); | |
| return err; | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_register_with_ops); | |
| /** | |
| * devl_port_unregister() - Unregister devlink port | |
| * | |
| * @devlink_port: devlink port | |
| */ | |
| void devl_port_unregister(struct devlink_port *devlink_port) | |
| { | |
| lockdep_assert_held(&devlink_port->devlink->lock); | |
| WARN_ON(devlink_port->type != DEVLINK_PORT_TYPE_NOTSET); | |
| devlink_port_type_warn_cancel(devlink_port); | |
| devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL); | |
| xa_erase(&devlink_port->devlink->ports, devlink_port->index); | |
| WARN_ON(!list_empty(&devlink_port->reporter_list)); | |
| devlink_port->registered = false; | |
| } | |
| EXPORT_SYMBOL_GPL(devl_port_unregister); | |
| /** | |
| * devlink_port_unregister - Unregister devlink port | |
| * | |
| * @devlink_port: devlink port | |
| * | |
| * Context: Takes and release devlink->lock <mutex>. | |
| */ | |
| void devlink_port_unregister(struct devlink_port *devlink_port) | |
| { | |
| struct devlink *devlink = devlink_port->devlink; | |
| devl_lock(devlink); | |
| devl_port_unregister(devlink_port); | |
| devl_unlock(devlink); | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_unregister); | |
| static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port, | |
| struct net_device *netdev) | |
| { | |
| const struct net_device_ops *ops = netdev->netdev_ops; | |
| /* If driver registers devlink port, it should set devlink port | |
| * attributes accordingly so the compat functions are called | |
| * and the original ops are not used. | |
| */ | |
| if (ops->ndo_get_phys_port_name) { | |
| /* Some drivers use the same set of ndos for netdevs | |
| * that have devlink_port registered and also for | |
| * those who don't. Make sure that ndo_get_phys_port_name | |
| * returns -EOPNOTSUPP here in case it is defined. | |
| * Warn if not. | |
| */ | |
| char name[IFNAMSIZ]; | |
| int err; | |
| err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name)); | |
| WARN_ON(err != -EOPNOTSUPP); | |
| } | |
| if (ops->ndo_get_port_parent_id) { | |
| /* Some drivers use the same set of ndos for netdevs | |
| * that have devlink_port registered and also for | |
| * those who don't. Make sure that ndo_get_port_parent_id | |
| * returns -EOPNOTSUPP here in case it is defined. | |
| * Warn if not. | |
| */ | |
| struct netdev_phys_item_id ppid; | |
| int err; | |
| err = ops->ndo_get_port_parent_id(netdev, &ppid); | |
| WARN_ON(err != -EOPNOTSUPP); | |
| } | |
| } | |
| static void __devlink_port_type_set(struct devlink_port *devlink_port, | |
| enum devlink_port_type type, | |
| void *type_dev) | |
| { | |
| struct net_device *netdev = type_dev; | |
| ASSERT_DEVLINK_PORT_REGISTERED(devlink_port); | |
| if (type == DEVLINK_PORT_TYPE_NOTSET) { | |
| devlink_port_type_warn_schedule(devlink_port); | |
| } else { | |
| devlink_port_type_warn_cancel(devlink_port); | |
| if (type == DEVLINK_PORT_TYPE_ETH && netdev) | |
| devlink_port_type_netdev_checks(devlink_port, netdev); | |
| } | |
| spin_lock_bh(&devlink_port->type_lock); | |
| devlink_port->type = type; | |
| switch (type) { | |
| case DEVLINK_PORT_TYPE_ETH: | |
| devlink_port->type_eth.netdev = netdev; | |
| if (netdev) { | |
| ASSERT_RTNL(); | |
| devlink_port->type_eth.ifindex = netdev->ifindex; | |
| BUILD_BUG_ON(sizeof(devlink_port->type_eth.ifname) != | |
| sizeof(netdev->name)); | |
| strcpy(devlink_port->type_eth.ifname, netdev->name); | |
| } | |
| break; | |
| case DEVLINK_PORT_TYPE_IB: | |
| devlink_port->type_ib.ibdev = type_dev; | |
| break; | |
| default: | |
| break; | |
| } | |
| spin_unlock_bh(&devlink_port->type_lock); | |
| devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); | |
| } | |
| /** | |
| * devlink_port_type_eth_set - Set port type to Ethernet | |
| * | |
| * @devlink_port: devlink port | |
| * | |
| * If driver is calling this, most likely it is doing something wrong. | |
| */ | |
| void devlink_port_type_eth_set(struct devlink_port *devlink_port) | |
| { | |
| dev_warn(devlink_port->devlink->dev, | |
| "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n", | |
| devlink_port->index); | |
| __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, NULL); | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_type_eth_set); | |
| /** | |
| * devlink_port_type_ib_set - Set port type to InfiniBand | |
| * | |
| * @devlink_port: devlink port | |
| * @ibdev: related IB device | |
| */ | |
| void devlink_port_type_ib_set(struct devlink_port *devlink_port, | |
| struct ib_device *ibdev) | |
| { | |
| __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev); | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_type_ib_set); | |
| /** | |
| * devlink_port_type_clear - Clear port type | |
| * | |
| * @devlink_port: devlink port | |
| * | |
| * If driver is calling this for clearing Ethernet type, most likely | |
| * it is doing something wrong. | |
| */ | |
| void devlink_port_type_clear(struct devlink_port *devlink_port) | |
| { | |
| if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) | |
| dev_warn(devlink_port->devlink->dev, | |
| "devlink port type for port %d cleared without a software interface reference, device type not supported by the kernel?\n", | |
| devlink_port->index); | |
| __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL); | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_type_clear); | |
| int devlink_port_netdevice_event(struct notifier_block *nb, | |
| unsigned long event, void *ptr) | |
| { | |
| struct net_device *netdev = netdev_notifier_info_to_dev(ptr); | |
| struct devlink_port *devlink_port = netdev->devlink_port; | |
| struct devlink *devlink; | |
| if (!devlink_port) | |
| return NOTIFY_OK; | |
| devlink = devlink_port->devlink; | |
| switch (event) { | |
| case NETDEV_POST_INIT: | |
| /* Set the type but not netdev pointer. It is going to be set | |
| * later on by NETDEV_REGISTER event. Happens once during | |
| * netdevice register | |
| */ | |
| __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, | |
| NULL); | |
| break; | |
| case NETDEV_REGISTER: | |
| case NETDEV_CHANGENAME: | |
| if (devlink_net(devlink) != dev_net(netdev)) | |
| return NOTIFY_OK; | |
| /* Set the netdev on top of previously set type. Note this | |
| * event happens also during net namespace change so here | |
| * we take into account netdev pointer appearing in this | |
| * namespace. | |
| */ | |
| __devlink_port_type_set(devlink_port, devlink_port->type, | |
| netdev); | |
| break; | |
| case NETDEV_UNREGISTER: | |
| if (devlink_net(devlink) != dev_net(netdev)) | |
| return NOTIFY_OK; | |
| /* Clear netdev pointer, but not the type. This event happens | |
| * also during net namespace change so we need to clear | |
| * pointer to netdev that is going to another net namespace. | |
| */ | |
| __devlink_port_type_set(devlink_port, devlink_port->type, | |
| NULL); | |
| break; | |
| case NETDEV_PRE_UNINIT: | |
| /* Clear the type and the netdev pointer. Happens one during | |
| * netdevice unregister. | |
| */ | |
| __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, | |
| NULL); | |
| break; | |
| } | |
| return NOTIFY_OK; | |
| } | |
| static int __devlink_port_attrs_set(struct devlink_port *devlink_port, | |
| enum devlink_port_flavour flavour) | |
| { | |
| struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
| devlink_port->attrs_set = true; | |
| attrs->flavour = flavour; | |
| if (attrs->switch_id.id_len) { | |
| devlink_port->switch_port = true; | |
| if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN)) | |
| attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN; | |
| } else { | |
| devlink_port->switch_port = false; | |
| } | |
| return 0; | |
| } | |
| /** | |
| * devlink_port_attrs_set - Set port attributes | |
| * | |
| * @devlink_port: devlink port | |
| * @attrs: devlink port attrs | |
| */ | |
| void devlink_port_attrs_set(struct devlink_port *devlink_port, | |
| struct devlink_port_attrs *attrs) | |
| { | |
| int ret; | |
| ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port); | |
| devlink_port->attrs = *attrs; | |
| ret = __devlink_port_attrs_set(devlink_port, attrs->flavour); | |
| if (ret) | |
| return; | |
| WARN_ON(attrs->splittable && attrs->split); | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_attrs_set); | |
| /** | |
| * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes | |
| * | |
| * @devlink_port: devlink port | |
| * @controller: associated controller number for the devlink port instance | |
| * @pf: associated PF for the devlink port instance | |
| * @external: indicates if the port is for an external controller | |
| */ | |
| void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller, | |
| u16 pf, bool external) | |
| { | |
| struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
| int ret; | |
| ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port); | |
| ret = __devlink_port_attrs_set(devlink_port, | |
| DEVLINK_PORT_FLAVOUR_PCI_PF); | |
| if (ret) | |
| return; | |
| attrs->pci_pf.controller = controller; | |
| attrs->pci_pf.pf = pf; | |
| attrs->pci_pf.external = external; | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set); | |
| /** | |
| * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes | |
| * | |
| * @devlink_port: devlink port | |
| * @controller: associated controller number for the devlink port instance | |
| * @pf: associated PF for the devlink port instance | |
| * @vf: associated VF of a PF for the devlink port instance | |
| * @external: indicates if the port is for an external controller | |
| */ | |
| void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller, | |
| u16 pf, u16 vf, bool external) | |
| { | |
| struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
| int ret; | |
| ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port); | |
| ret = __devlink_port_attrs_set(devlink_port, | |
| DEVLINK_PORT_FLAVOUR_PCI_VF); | |
| if (ret) | |
| return; | |
| attrs->pci_vf.controller = controller; | |
| attrs->pci_vf.pf = pf; | |
| attrs->pci_vf.vf = vf; | |
| attrs->pci_vf.external = external; | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set); | |
| /** | |
| * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes | |
| * | |
| * @devlink_port: devlink port | |
| * @controller: associated controller number for the devlink port instance | |
| * @pf: associated PF for the devlink port instance | |
| * @sf: associated SF of a PF for the devlink port instance | |
| * @external: indicates if the port is for an external controller | |
| */ | |
| void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller, | |
| u16 pf, u32 sf, bool external) | |
| { | |
| struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
| int ret; | |
| ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port); | |
| ret = __devlink_port_attrs_set(devlink_port, | |
| DEVLINK_PORT_FLAVOUR_PCI_SF); | |
| if (ret) | |
| return; | |
| attrs->pci_sf.controller = controller; | |
| attrs->pci_sf.pf = pf; | |
| attrs->pci_sf.sf = sf; | |
| attrs->pci_sf.external = external; | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set); | |
| static void devlink_port_rel_notify_cb(struct devlink *devlink, u32 port_index) | |
| { | |
| struct devlink_port *devlink_port; | |
| devlink_port = devlink_port_get_by_index(devlink, port_index); | |
| if (!devlink_port) | |
| return; | |
| devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); | |
| } | |
| static void devlink_port_rel_cleanup_cb(struct devlink *devlink, u32 port_index, | |
| u32 rel_index) | |
| { | |
| struct devlink_port *devlink_port; | |
| devlink_port = devlink_port_get_by_index(devlink, port_index); | |
| if (devlink_port && devlink_port->rel_index == rel_index) | |
| devlink_port->rel_index = 0; | |
| } | |
| /** | |
| * devl_port_fn_devlink_set - Attach peer devlink | |
| * instance to port function. | |
| * @devlink_port: devlink port | |
| * @fn_devlink: devlink instance to attach | |
| */ | |
| int devl_port_fn_devlink_set(struct devlink_port *devlink_port, | |
| struct devlink *fn_devlink) | |
| { | |
| ASSERT_DEVLINK_PORT_REGISTERED(devlink_port); | |
| if (WARN_ON(devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_SF || | |
| devlink_port->attrs.pci_sf.external)) | |
| return -EINVAL; | |
| return devlink_rel_nested_in_add(&devlink_port->rel_index, | |
| devlink_port->devlink->index, | |
| devlink_port->index, | |
| devlink_port_rel_notify_cb, | |
| devlink_port_rel_cleanup_cb, | |
| fn_devlink); | |
| } | |
| EXPORT_SYMBOL_GPL(devl_port_fn_devlink_set); | |
| /** | |
| * devlink_port_linecard_set - Link port with a linecard | |
| * | |
| * @devlink_port: devlink port | |
| * @linecard: devlink linecard | |
| */ | |
| void devlink_port_linecard_set(struct devlink_port *devlink_port, | |
| struct devlink_linecard *linecard) | |
| { | |
| ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port); | |
| devlink_port->linecard = linecard; | |
| } | |
| EXPORT_SYMBOL_GPL(devlink_port_linecard_set); | |
| static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port, | |
| char *name, size_t len) | |
| { | |
| struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
| int n = 0; | |
| if (!devlink_port->attrs_set) | |
| return -EOPNOTSUPP; | |
| switch (attrs->flavour) { | |
| case DEVLINK_PORT_FLAVOUR_PHYSICAL: | |
| if (devlink_port->linecard) | |
| n = snprintf(name, len, "l%u", | |
| devlink_linecard_index(devlink_port->linecard)); | |
| if (n < len) | |
| n += snprintf(name + n, len - n, "p%u", | |
| attrs->phys.port_number); | |
| if (n < len && attrs->split) | |
| n += snprintf(name + n, len - n, "s%u", | |
| attrs->phys.split_subport_number); | |
| break; | |
| case DEVLINK_PORT_FLAVOUR_CPU: | |
| case DEVLINK_PORT_FLAVOUR_DSA: | |
| case DEVLINK_PORT_FLAVOUR_UNUSED: | |
| /* As CPU and DSA ports do not have a netdevice associated | |
| * case should not ever happen. | |
| */ | |
| WARN_ON(1); | |
| return -EINVAL; | |
| case DEVLINK_PORT_FLAVOUR_PCI_PF: | |
| if (attrs->pci_pf.external) { | |
| n = snprintf(name, len, "c%u", attrs->pci_pf.controller); | |
| if (n >= len) | |
| return -EINVAL; | |
| len -= n; | |
| name += n; | |
| } | |
| n = snprintf(name, len, "pf%u", attrs->pci_pf.pf); | |
| break; | |
| case DEVLINK_PORT_FLAVOUR_PCI_VF: | |
| if (attrs->pci_vf.external) { | |
| n = snprintf(name, len, "c%u", attrs->pci_vf.controller); | |
| if (n >= len) | |
| return -EINVAL; | |
| len -= n; | |
| name += n; | |
| } | |
| n = snprintf(name, len, "pf%uvf%u", | |
| attrs->pci_vf.pf, attrs->pci_vf.vf); | |
| break; | |
| case DEVLINK_PORT_FLAVOUR_PCI_SF: | |
| if (attrs->pci_sf.external) { | |
| n = snprintf(name, len, "c%u", attrs->pci_sf.controller); | |
| if (n >= len) | |
| return -EINVAL; | |
| len -= n; | |
| name += n; | |
| } | |
| n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf, | |
| attrs->pci_sf.sf); | |
| break; | |
| case DEVLINK_PORT_FLAVOUR_VIRTUAL: | |
| return -EOPNOTSUPP; | |
| } | |
| if (n >= len) | |
| return -EINVAL; | |
| return 0; | |
| } | |
| int devlink_compat_phys_port_name_get(struct net_device *dev, | |
| char *name, size_t len) | |
| { | |
| struct devlink_port *devlink_port; | |
| /* RTNL mutex is held here which ensures that devlink_port | |
| * instance cannot disappear in the middle. No need to take | |
| * any devlink lock as only permanent values are accessed. | |
| */ | |
| ASSERT_RTNL(); | |
| devlink_port = dev->devlink_port; | |
| if (!devlink_port) | |
| return -EOPNOTSUPP; | |
| return __devlink_port_phys_port_name_get(devlink_port, name, len); | |
| } | |
| int devlink_compat_switch_id_get(struct net_device *dev, | |
| struct netdev_phys_item_id *ppid) | |
| { | |
| struct devlink_port *devlink_port; | |
| /* Caller must hold RTNL mutex or reference to dev, which ensures that | |
| * devlink_port instance cannot disappear in the middle. No need to take | |
| * any devlink lock as only permanent values are accessed. | |
| */ | |
| devlink_port = dev->devlink_port; | |
| if (!devlink_port || !devlink_port->switch_port) | |
| return -EOPNOTSUPP; | |
| memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid)); | |
| return 0; | |
| } |