/* 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 boolswitchdev_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);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 intswitchdev_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 voidswitchdev_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 intregister_switchdev_blocking_notifier(struct notifier_block *nb){	return 0;} static inline intunregister_switchdev_blocking_notifier(struct notifier_block *nb){	return 0;} static inline intcall_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 intswitchdev_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 intswitchdev_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 intswitchdev_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;} 

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