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/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * include/net/switchdev.h - Switch device API * Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us> * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com> */ #ifndef _LINUX_SWITCHDEV_H_ #define _LINUX_SWITCHDEV_H_ #include <linux/netdevice.h> #include <linux/notifier.h> #include <linux/list.h> #include <net/ip_fib.h> #define SWITCHDEV_F_NO_RECURSE BIT(0) #define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1) #define SWITCHDEV_F_DEFER BIT(2) enum switchdev_attr_id { SWITCHDEV_ATTR_ID_UNDEFINED, SWITCHDEV_ATTR_ID_PORT_STP_STATE, SWITCHDEV_ATTR_ID_PORT_MST_STATE, SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS, SWITCHDEV_ATTR_ID_PORT_MROUTER, SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME, SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED, SWITCHDEV_ATTR_ID_BRIDGE_MROUTER, SWITCHDEV_ATTR_ID_BRIDGE_MST, SWITCHDEV_ATTR_ID_MRP_PORT_ROLE, SWITCHDEV_ATTR_ID_VLAN_MSTI, }; struct switchdev_mst_state { u16 msti; u8 state; }; struct switchdev_brport_flags { unsigned long val; unsigned long mask; }; struct switchdev_vlan_msti { u16 vid; u16 msti; }; struct switchdev_attr { struct net_device *orig_dev; enum switchdev_attr_id id; u32 flags; void *complete_priv; void (*complete)(struct net_device *dev, int err, void *priv); union { u8 stp_state; /* PORT_STP_STATE */ struct switchdev_mst_state mst_state; /* PORT_MST_STATE */ struct switchdev_brport_flags brport_flags; /* PORT_BRIDGE_FLAGS */ bool mrouter; /* PORT_MROUTER */ clock_t ageing_time; /* BRIDGE_AGEING_TIME */ bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */ u16 vlan_protocol; /* BRIDGE_VLAN_PROTOCOL */ bool mst; /* BRIDGE_MST */ bool mc_disabled; /* MC_DISABLED */ u8 mrp_port_role; /* MRP_PORT_ROLE */ struct switchdev_vlan_msti vlan_msti; /* VLAN_MSTI */ } u; }; enum switchdev_obj_id { SWITCHDEV_OBJ_ID_UNDEFINED, SWITCHDEV_OBJ_ID_PORT_VLAN, SWITCHDEV_OBJ_ID_PORT_MDB, SWITCHDEV_OBJ_ID_HOST_MDB, SWITCHDEV_OBJ_ID_MRP, SWITCHDEV_OBJ_ID_RING_TEST_MRP, SWITCHDEV_OBJ_ID_RING_ROLE_MRP, SWITCHDEV_OBJ_ID_RING_STATE_MRP, SWITCHDEV_OBJ_ID_IN_TEST_MRP, SWITCHDEV_OBJ_ID_IN_ROLE_MRP, SWITCHDEV_OBJ_ID_IN_STATE_MRP, }; struct switchdev_obj { struct list_head list; struct net_device *orig_dev; enum switchdev_obj_id id; u32 flags; void *complete_priv; void (*complete)(struct net_device *dev, int err, void *priv); }; /* SWITCHDEV_OBJ_ID_PORT_VLAN */ struct switchdev_obj_port_vlan { struct switchdev_obj obj; u16 flags; u16 vid; /* If set, the notifier signifies a change of one of the following * flags for a VLAN that already exists: * - BRIDGE_VLAN_INFO_PVID * - BRIDGE_VLAN_INFO_UNTAGGED * Entries with BRIDGE_VLAN_INFO_BRENTRY unset are not notified at all. */ bool changed; }; #define SWITCHDEV_OBJ_PORT_VLAN(OBJ) \ container_of((OBJ), struct switchdev_obj_port_vlan, obj) /* SWITCHDEV_OBJ_ID_PORT_MDB */ struct switchdev_obj_port_mdb { struct switchdev_obj obj; unsigned char addr[ETH_ALEN]; u16 vid; }; #define SWITCHDEV_OBJ_PORT_MDB(OBJ) \ container_of((OBJ), struct switchdev_obj_port_mdb, obj) /* SWITCHDEV_OBJ_ID_MRP */ struct switchdev_obj_mrp { struct switchdev_obj obj; struct net_device *p_port; struct net_device *s_port; u32 ring_id; u16 prio; }; #define SWITCHDEV_OBJ_MRP(OBJ) \ container_of((OBJ), struct switchdev_obj_mrp, obj) /* SWITCHDEV_OBJ_ID_RING_TEST_MRP */ struct switchdev_obj_ring_test_mrp { struct switchdev_obj obj; /* The value is in us and a value of 0 represents to stop */ u32 interval; u8 max_miss; u32 ring_id; u32 period; bool monitor; }; #define SWITCHDEV_OBJ_RING_TEST_MRP(OBJ) \ container_of((OBJ), struct switchdev_obj_ring_test_mrp, obj) /* SWICHDEV_OBJ_ID_RING_ROLE_MRP */ struct switchdev_obj_ring_role_mrp { struct switchdev_obj obj; u8 ring_role; u32 ring_id; u8 sw_backup; }; #define SWITCHDEV_OBJ_RING_ROLE_MRP(OBJ) \ container_of((OBJ), struct switchdev_obj_ring_role_mrp, obj) struct switchdev_obj_ring_state_mrp { struct switchdev_obj obj; u8 ring_state; u32 ring_id; }; #define SWITCHDEV_OBJ_RING_STATE_MRP(OBJ) \ container_of((OBJ), struct switchdev_obj_ring_state_mrp, obj) /* SWITCHDEV_OBJ_ID_IN_TEST_MRP */ struct switchdev_obj_in_test_mrp { struct switchdev_obj obj; /* The value is in us and a value of 0 represents to stop */ u32 interval; u32 in_id; u32 period; u8 max_miss; }; #define SWITCHDEV_OBJ_IN_TEST_MRP(OBJ) \ container_of((OBJ), struct switchdev_obj_in_test_mrp, obj) /* SWICHDEV_OBJ_ID_IN_ROLE_MRP */ struct switchdev_obj_in_role_mrp { struct switchdev_obj obj; struct net_device *i_port; u32 ring_id; u16 in_id; u8 in_role; u8 sw_backup; }; #define SWITCHDEV_OBJ_IN_ROLE_MRP(OBJ) \ container_of((OBJ), struct switchdev_obj_in_role_mrp, obj) struct switchdev_obj_in_state_mrp { struct switchdev_obj obj; u32 in_id; u8 in_state; }; #define SWITCHDEV_OBJ_IN_STATE_MRP(OBJ) \ container_of((OBJ), struct switchdev_obj_in_state_mrp, obj) struct switchdev_brport { struct net_device *dev; const void *ctx; struct notifier_block *atomic_nb; struct notifier_block *blocking_nb; bool tx_fwd_offload; }; enum switchdev_notifier_type { SWITCHDEV_FDB_ADD_TO_BRIDGE = 1, SWITCHDEV_FDB_DEL_TO_BRIDGE, SWITCHDEV_FDB_ADD_TO_DEVICE, SWITCHDEV_FDB_DEL_TO_DEVICE, SWITCHDEV_FDB_OFFLOADED, SWITCHDEV_FDB_FLUSH_TO_BRIDGE, SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */ SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */ SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */ SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE, SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE, SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE, SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE, SWITCHDEV_VXLAN_FDB_OFFLOADED, SWITCHDEV_BRPORT_OFFLOADED, SWITCHDEV_BRPORT_UNOFFLOADED, SWITCHDEV_BRPORT_REPLAY, }; struct switchdev_notifier_info { struct net_device *dev; struct netlink_ext_ack *extack; const void *ctx; }; /* Remember to update br_switchdev_fdb_populate() when adding * new members to this structure */ struct switchdev_notifier_fdb_info { struct switchdev_notifier_info info; /* must be first */ const unsigned char *addr; u16 vid; u8 added_by_user:1, is_local:1, locked:1, offloaded:1; }; struct switchdev_notifier_port_obj_info { struct switchdev_notifier_info info; /* must be first */ const struct switchdev_obj *obj; bool handled; }; struct switchdev_notifier_port_attr_info { struct switchdev_notifier_info info; /* must be first */ const struct switchdev_attr *attr; bool handled; }; struct switchdev_notifier_brport_info { struct switchdev_notifier_info info; /* must be first */ const struct switchdev_brport brport; }; static inline struct net_device * switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info) { return info->dev; } static inline struct netlink_ext_ack * switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info) { return info->extack; } static inline bool switchdev_fdb_is_dynamically_learned(const struct switchdev_notifier_fdb_info *fdb_info) { return !fdb_info->added_by_user && !fdb_info->is_local; } #ifdef CONFIG_NET_SWITCHDEV int switchdev_bridge_port_offload(struct net_device *brport_dev, struct net_device *dev, const void *ctx, struct notifier_block *atomic_nb, struct notifier_block *blocking_nb, bool tx_fwd_offload, struct netlink_ext_ack *extack); void switchdev_bridge_port_unoffload(struct net_device *brport_dev, const void *ctx, struct notifier_block *atomic_nb, struct notifier_block *blocking_nb); int switchdev_bridge_port_replay(struct net_device *brport_dev, struct net_device *dev, const void *ctx, struct notifier_block *atomic_nb, struct notifier_block *blocking_nb, struct netlink_ext_ack *extack); void switchdev_deferred_process(void); int switchdev_port_attr_set(struct net_device *dev, const struct switchdev_attr *attr, struct netlink_ext_ack *extack); bool switchdev_port_obj_act_is_deferred(struct net_device *dev, enum switchdev_notifier_type nt, const struct switchdev_obj *obj); int switchdev_port_obj_add(struct net_device *dev, const struct switchdev_obj *obj, struct netlink_ext_ack *extack); int switchdev_port_obj_del(struct net_device *dev, const struct switchdev_obj *obj); int register_switchdev_notifier(struct notifier_block *nb); int unregister_switchdev_notifier(struct notifier_block *nb); int call_switchdev_notifiers(unsigned long val, struct net_device *dev, struct switchdev_notifier_info *info, struct netlink_ext_ack *extack); int register_switchdev_blocking_notifier(struct notifier_block *nb); int unregister_switchdev_blocking_notifier(struct notifier_block *nb); int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev, struct switchdev_notifier_info *info, struct netlink_ext_ack *extack); int switchdev_handle_fdb_event_to_device(struct net_device *dev, unsigned long event, const struct switchdev_notifier_fdb_info *fdb_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*mod_cb)(struct net_device *dev, struct net_device *orig_dev, unsigned long event, const void *ctx, const struct switchdev_notifier_fdb_info *fdb_info)); int switchdev_handle_port_obj_add(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), int (*add_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj, struct netlink_ext_ack *extack)); int switchdev_handle_port_obj_add_foreign(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*add_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj, struct netlink_ext_ack *extack)); int switchdev_handle_port_obj_del(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), int (*del_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj)); int switchdev_handle_port_obj_del_foreign(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*del_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj)); int switchdev_handle_port_attr_set(struct net_device *dev, struct switchdev_notifier_port_attr_info *port_attr_info, bool (*check_cb)(const struct net_device *dev), int (*set_cb)(struct net_device *dev, const void *ctx, const struct switchdev_attr *attr, struct netlink_ext_ack *extack)); #else static inline int switchdev_bridge_port_offload(struct net_device *brport_dev, struct net_device *dev, const void *ctx, struct notifier_block *atomic_nb, struct notifier_block *blocking_nb, bool tx_fwd_offload, struct netlink_ext_ack *extack) { return -EOPNOTSUPP; } static inline void switchdev_bridge_port_unoffload(struct net_device *brport_dev, const void *ctx, struct notifier_block *atomic_nb, struct notifier_block *blocking_nb) { } static inline void switchdev_deferred_process(void) { } static inline int switchdev_port_attr_set(struct net_device *dev, const struct switchdev_attr *attr, struct netlink_ext_ack *extack) { return -EOPNOTSUPP; } static inline int switchdev_port_obj_add(struct net_device *dev, const struct switchdev_obj *obj, struct netlink_ext_ack *extack) { return -EOPNOTSUPP; } static inline int switchdev_port_obj_del(struct net_device *dev, const struct switchdev_obj *obj) { return -EOPNOTSUPP; } static inline int register_switchdev_notifier(struct notifier_block *nb) { return 0; } static inline int unregister_switchdev_notifier(struct notifier_block *nb) { return 0; } static inline int call_switchdev_notifiers(unsigned long val, struct net_device *dev, struct switchdev_notifier_info *info, struct netlink_ext_ack *extack) { return NOTIFY_DONE; } static inline int register_switchdev_blocking_notifier(struct notifier_block *nb) { return 0; } static inline int unregister_switchdev_blocking_notifier(struct notifier_block *nb) { return 0; } static inline int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev, struct switchdev_notifier_info *info, struct netlink_ext_ack *extack) { return NOTIFY_DONE; } static inline int switchdev_handle_fdb_event_to_device(struct net_device *dev, unsigned long event, const struct switchdev_notifier_fdb_info *fdb_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*mod_cb)(struct net_device *dev, struct net_device *orig_dev, unsigned long event, const void *ctx, const struct switchdev_notifier_fdb_info *fdb_info)) { return 0; } static inline int switchdev_handle_port_obj_add(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), int (*add_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj, struct netlink_ext_ack *extack)) { return 0; } static inline int switchdev_handle_port_obj_add_foreign(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*add_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj, struct netlink_ext_ack *extack)) { return 0; } static inline int switchdev_handle_port_obj_del(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), int (*del_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj)) { return 0; } static inline int switchdev_handle_port_obj_del_foreign(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*del_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj)) { return 0; } static inline int switchdev_handle_port_attr_set(struct net_device *dev, struct switchdev_notifier_port_attr_info *port_attr_info, bool (*check_cb)(const struct net_device *dev), int (*set_cb)(struct net_device *dev, const void *ctx, const struct switchdev_attr *attr, struct netlink_ext_ack *extack)) { return 0; } #endif #endif /* _LINUX_SWITCHDEV_H_ */