include/net/switchdev.h - kernel/bruno - Git at Google

 /*
  * 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>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  */
 #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)

 struct switchdev_trans_item {
 	struct list_head list;
 	void *data;
 	void (*destructor)(const void *data);
 };

 struct switchdev_trans {
 	struct list_head item_list;
 	bool ph_prepare;
 };

 static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
 {
 	return trans && trans->ph_prepare;
 }

 static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
 {
 	return trans && !trans->ph_prepare;
 }

 enum switchdev_attr_id {
 	SWITCHDEV_ATTR_ID_UNDEFINED,
 	SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
 	SWITCHDEV_ATTR_ID_PORT_STP_STATE,
 	SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
 	SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
 };

 struct switchdev_attr {
 	enum switchdev_attr_id id;
 	u32 flags;
 	union {
 		struct netdev_phys_item_id ppid;	/* PORT_PARENT_ID */
 		u8 stp_state;				/* PORT_STP_STATE */
 		unsigned long brport_flags;		/* PORT_BRIDGE_FLAGS */
 		u32 ageing_time;			/* BRIDGE_AGEING_TIME */
 	} u;
 };

 enum switchdev_obj_id {
 	SWITCHDEV_OBJ_ID_UNDEFINED,
 	SWITCHDEV_OBJ_ID_PORT_VLAN,
 	SWITCHDEV_OBJ_ID_IPV4_FIB,
 	SWITCHDEV_OBJ_ID_PORT_FDB,
 };

 struct switchdev_obj {
 	enum switchdev_obj_id id;
 	u32 flags;
 };

 /* SWITCHDEV_OBJ_ID_PORT_VLAN */
 struct switchdev_obj_port_vlan {
 	struct switchdev_obj obj;
 	u16 flags;
 	u16 vid_begin;
 	u16 vid_end;
 };

 #define SWITCHDEV_OBJ_PORT_VLAN(obj) \
 	container_of(obj, struct switchdev_obj_port_vlan, obj)

 /* SWITCHDEV_OBJ_ID_IPV4_FIB */
 struct switchdev_obj_ipv4_fib {
 	struct switchdev_obj obj;
 	u32 dst;
 	int dst_len;
 	struct fib_info *fi;
 	u8 tos;
 	u8 type;
 	u32 nlflags;
 	u32 tb_id;
 };

 #define SWITCHDEV_OBJ_IPV4_FIB(obj) \
 	container_of(obj, struct switchdev_obj_ipv4_fib, obj)

 /* SWITCHDEV_OBJ_ID_PORT_FDB */
 struct switchdev_obj_port_fdb {
 	struct switchdev_obj obj;
 	unsigned char addr[ETH_ALEN];
 	u16 vid;
 	u16 ndm_state;
 };

 #define SWITCHDEV_OBJ_PORT_FDB(obj) \
 	container_of(obj, struct switchdev_obj_port_fdb, obj)

 void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
 				  void *data, void (*destructor)(void const *),
 				  struct switchdev_trans_item *tritem);
 void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);

 typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);

 /**
  * struct switchdev_ops - switchdev operations
  *
  * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
  *
  * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
  *
  * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
  *
  * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
  *
  * @switchdev_port_obj_dump: Dump port objects (see switchdev_obj_*).
  */
 struct switchdev_ops {
 	int	(*switchdev_port_attr_get)(struct net_device *dev,
 					   struct switchdev_attr *attr);
 	int	(*switchdev_port_attr_set)(struct net_device *dev,
 					   const struct switchdev_attr *attr,
 					   struct switchdev_trans *trans);
 	int	(*switchdev_port_obj_add)(struct net_device *dev,
 					  const struct switchdev_obj *obj,
 					  struct switchdev_trans *trans);
 	int	(*switchdev_port_obj_del)(struct net_device *dev,
 					  const struct switchdev_obj *obj);
 	int	(*switchdev_port_obj_dump)(struct net_device *dev,
 					   struct switchdev_obj *obj,
 					   switchdev_obj_dump_cb_t *cb);
 };

 enum switchdev_notifier_type {
 	SWITCHDEV_FDB_ADD = 1,
 	SWITCHDEV_FDB_DEL,
 };

 struct switchdev_notifier_info {
 	struct net_device *dev;
 };

 struct switchdev_notifier_fdb_info {
 	struct switchdev_notifier_info info; /* must be first */
 	const unsigned char *addr;
 	u16 vid;
 };

 static inline struct net_device *
 switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
 {
 	return info->dev;
 }

 #ifdef CONFIG_NET_SWITCHDEV

 void switchdev_deferred_process(void);
 int switchdev_port_attr_get(struct net_device *dev,
 			    struct switchdev_attr *attr);
 int switchdev_port_attr_set(struct net_device *dev,
 			    const struct switchdev_attr *attr);
 int switchdev_port_obj_add(struct net_device *dev,
 			   const struct switchdev_obj *obj);
 int switchdev_port_obj_del(struct net_device *dev,
 			   const struct switchdev_obj *obj);
 int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj,
 			    switchdev_obj_dump_cb_t *cb);
 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);
 int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 				  struct net_device *dev, u32 filter_mask,
 				  int nlflags);
 int switchdev_port_bridge_setlink(struct net_device *dev,
 				  struct nlmsghdr *nlh, u16 flags);
 int switchdev_port_bridge_dellink(struct net_device *dev,
 				  struct nlmsghdr *nlh, u16 flags);
 int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
 			   u8 tos, u8 type, u32 nlflags, u32 tb_id);
 int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
 			   u8 tos, u8 type, u32 tb_id);
 void switchdev_fib_ipv4_abort(struct fib_info *fi);
 int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 			   struct net_device *dev, const unsigned char *addr,
 			   u16 vid, u16 nlm_flags);
 int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 			   struct net_device *dev, const unsigned char *addr,
 			   u16 vid);
 int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 			    struct net_device *dev,
 			    struct net_device *filter_dev, int idx);
 void switchdev_port_fwd_mark_set(struct net_device *dev,
 				 struct net_device *group_dev,
 				 bool joining);

 #else

 static inline void switchdev_deferred_process(void)
 {
 }

 static inline int switchdev_port_attr_get(struct net_device *dev,
 					  struct switchdev_attr *attr)
 {
 	return -EOPNOTSUPP;
 }

 static inline int switchdev_port_attr_set(struct net_device *dev,
 					  const struct switchdev_attr *attr)
 {
 	return -EOPNOTSUPP;
 }

 static inline int switchdev_port_obj_add(struct net_device *dev,
 					 const struct switchdev_obj *obj)
 {
 	return -EOPNOTSUPP;
 }

 static inline int switchdev_port_obj_del(struct net_device *dev,
 					 const struct switchdev_obj *obj)
 {
 	return -EOPNOTSUPP;
 }

 static inline int switchdev_port_obj_dump(struct net_device *dev,
 					  const struct switchdev_obj *obj,
 					  switchdev_obj_dump_cb_t *cb)
 {
 	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)
 {
 	return NOTIFY_DONE;
 }

 static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
 					    u32 seq, struct net_device *dev,
 					    u32 filter_mask, int nlflags)
 {
 	return -EOPNOTSUPP;
 }

 static inline int switchdev_port_bridge_setlink(struct net_device *dev,
 						struct nlmsghdr *nlh,
 						u16 flags)
 {
 	return -EOPNOTSUPP;
 }

 static inline int switchdev_port_bridge_dellink(struct net_device *dev,
 						struct nlmsghdr *nlh,
 						u16 flags)
 {
 	return -EOPNOTSUPP;
 }

 static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
 					 struct fib_info *fi,
 					 u8 tos, u8 type,
 					 u32 nlflags, u32 tb_id)
 {
 	return 0;
 }

 static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
 					 struct fib_info *fi,
 					 u8 tos, u8 type, u32 tb_id)
 {
 	return 0;
 }

 static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
 {
 }

 static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 					 struct net_device *dev,
 					 const unsigned char *addr,
 					 u16 vid, u16 nlm_flags)
 {
 	return -EOPNOTSUPP;
 }

 static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 					 struct net_device *dev,
 					 const unsigned char *addr, u16 vid)
 {
 	return -EOPNOTSUPP;
 }

 static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
 					  struct netlink_callback *cb,
 					  struct net_device *dev,
 					  struct net_device *filter_dev,
 					  int idx)
 {
        return idx;
 }

 static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
 					       struct net_device *group_dev,
 					       bool joining)
 {
 }

 #endif

 #endif /* _LINUX_SWITCHDEV_H_ */
	/*
	* 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>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*/
	#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)

	struct switchdev_trans_item {
	struct list_head list;
	void *data;
	void (destructor)(const void data);
	};

	struct switchdev_trans {
	struct list_head item_list;
	bool ph_prepare;
	};

	static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
	{
	return trans && trans->ph_prepare;
	}

	static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
	{
	return trans && !trans->ph_prepare;
	}

	enum switchdev_attr_id {
	SWITCHDEV_ATTR_ID_UNDEFINED,
	SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
	SWITCHDEV_ATTR_ID_PORT_STP_STATE,
	SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
	SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
	};

	struct switchdev_attr {
	enum switchdev_attr_id id;
	u32 flags;
	union {
	struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
	u8 stp_state; /* PORT_STP_STATE */
	unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */
	u32 ageing_time; /* BRIDGE_AGEING_TIME */
	} u;
	};

	enum switchdev_obj_id {
	SWITCHDEV_OBJ_ID_UNDEFINED,
	SWITCHDEV_OBJ_ID_PORT_VLAN,
	SWITCHDEV_OBJ_ID_IPV4_FIB,
	SWITCHDEV_OBJ_ID_PORT_FDB,
	};

	struct switchdev_obj {
	enum switchdev_obj_id id;
	u32 flags;
	};

	/* SWITCHDEV_OBJ_ID_PORT_VLAN */
	struct switchdev_obj_port_vlan {
	struct switchdev_obj obj;
	u16 flags;
	u16 vid_begin;
	u16 vid_end;
	};

	#define SWITCHDEV_OBJ_PORT_VLAN(obj) \
	container_of(obj, struct switchdev_obj_port_vlan, obj)

	/* SWITCHDEV_OBJ_ID_IPV4_FIB */
	struct switchdev_obj_ipv4_fib {
	struct switchdev_obj obj;
	u32 dst;
	int dst_len;
	struct fib_info *fi;
	u8 tos;
	u8 type;
	u32 nlflags;
	u32 tb_id;
	};

	#define SWITCHDEV_OBJ_IPV4_FIB(obj) \
	container_of(obj, struct switchdev_obj_ipv4_fib, obj)

	/* SWITCHDEV_OBJ_ID_PORT_FDB */
	struct switchdev_obj_port_fdb {
	struct switchdev_obj obj;
	unsigned char addr[ETH_ALEN];
	u16 vid;
	u16 ndm_state;
	};

	#define SWITCHDEV_OBJ_PORT_FDB(obj) \
	container_of(obj, struct switchdev_obj_port_fdb, obj)

	void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
	void data, void (destructor)(void const *),
	struct switchdev_trans_item *tritem);
	void switchdev_trans_item_dequeue(struct switchdev_trans trans);

	typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);

	/**
	* struct switchdev_ops - switchdev operations
	*
	* @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
	*
	* @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
	*
	* @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
	*
	* @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
	*
	* @switchdev_port_obj_dump: Dump port objects (see switchdev_obj_*).
	*/
	struct switchdev_ops {
	int (switchdev_port_attr_get)(struct net_device dev,
	struct switchdev_attr *attr);
	int (switchdev_port_attr_set)(struct net_device dev,
	const struct switchdev_attr *attr,
	struct switchdev_trans *trans);
	int (switchdev_port_obj_add)(struct net_device dev,
	const struct switchdev_obj *obj,
	struct switchdev_trans *trans);
	int (switchdev_port_obj_del)(struct net_device dev,
	const struct switchdev_obj *obj);
	int (switchdev_port_obj_dump)(struct net_device dev,
	struct switchdev_obj *obj,
	switchdev_obj_dump_cb_t *cb);
	};

	enum switchdev_notifier_type {
	SWITCHDEV_FDB_ADD = 1,
	SWITCHDEV_FDB_DEL,
	};

	struct switchdev_notifier_info {
	struct net_device *dev;
	};

	struct switchdev_notifier_fdb_info {
	struct switchdev_notifier_info info; /* must be first */
	const unsigned char *addr;
	u16 vid;
	};

	static inline struct net_device *
	switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
	{
	return info->dev;
	}

	#ifdef CONFIG_NET_SWITCHDEV

	void switchdev_deferred_process(void);
	int switchdev_port_attr_get(struct net_device *dev,
	struct switchdev_attr *attr);
	int switchdev_port_attr_set(struct net_device *dev,
	const struct switchdev_attr *attr);
	int switchdev_port_obj_add(struct net_device *dev,
	const struct switchdev_obj *obj);
	int switchdev_port_obj_del(struct net_device *dev,
	const struct switchdev_obj *obj);
	int switchdev_port_obj_dump(struct net_device dev, struct switchdev_obj obj,
	switchdev_obj_dump_cb_t *cb);
	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);
	int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
	struct net_device *dev, u32 filter_mask,
	int nlflags);
	int switchdev_port_bridge_setlink(struct net_device *dev,
	struct nlmsghdr *nlh, u16 flags);
	int switchdev_port_bridge_dellink(struct net_device *dev,
	struct nlmsghdr *nlh, u16 flags);
	int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
	u8 tos, u8 type, u32 nlflags, u32 tb_id);
	int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
	u8 tos, u8 type, u32 tb_id);
	void switchdev_fib_ipv4_abort(struct fib_info *fi);
	int switchdev_port_fdb_add(struct ndmsg ndm, struct nlattr tb[],
	struct net_device dev, const unsigned char addr,
	u16 vid, u16 nlm_flags);
	int switchdev_port_fdb_del(struct ndmsg ndm, struct nlattr tb[],
	struct net_device dev, const unsigned char addr,
	u16 vid);
	int switchdev_port_fdb_dump(struct sk_buff skb, struct netlink_callback cb,
	struct net_device *dev,
	struct net_device *filter_dev, int idx);
	void switchdev_port_fwd_mark_set(struct net_device *dev,
	struct net_device *group_dev,
	bool joining);

	#else

	static inline void switchdev_deferred_process(void)
	{
	}

	static inline int switchdev_port_attr_get(struct net_device *dev,
	struct switchdev_attr *attr)
	{
	return -EOPNOTSUPP;
	}

	static inline int switchdev_port_attr_set(struct net_device *dev,
	const struct switchdev_attr *attr)
	{
	return -EOPNOTSUPP;
	}

	static inline int switchdev_port_obj_add(struct net_device *dev,
	const struct switchdev_obj *obj)
	{
	return -EOPNOTSUPP;
	}

	static inline int switchdev_port_obj_del(struct net_device *dev,
	const struct switchdev_obj *obj)
	{
	return -EOPNOTSUPP;
	}

	static inline int switchdev_port_obj_dump(struct net_device *dev,
	const struct switchdev_obj *obj,
	switchdev_obj_dump_cb_t *cb)
	{
	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)
	{
	return NOTIFY_DONE;
	}

	static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
	u32 seq, struct net_device *dev,
	u32 filter_mask, int nlflags)
	{
	return -EOPNOTSUPP;
	}

	static inline int switchdev_port_bridge_setlink(struct net_device *dev,
	struct nlmsghdr *nlh,
	u16 flags)
	{
	return -EOPNOTSUPP;
	}

	static inline int switchdev_port_bridge_dellink(struct net_device *dev,
	struct nlmsghdr *nlh,
	u16 flags)
	{
	return -EOPNOTSUPP;
	}

	static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
	struct fib_info *fi,
	u8 tos, u8 type,
	u32 nlflags, u32 tb_id)
	{
	return 0;
	}

	static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
	struct fib_info *fi,
	u8 tos, u8 type, u32 tb_id)
	{
	return 0;
	}

	static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
	{
	}

	static inline int switchdev_port_fdb_add(struct ndmsg ndm, struct nlattr tb[],
	struct net_device *dev,
	const unsigned char *addr,
	u16 vid, u16 nlm_flags)
	{
	return -EOPNOTSUPP;
	}

	static inline int switchdev_port_fdb_del(struct ndmsg ndm, struct nlattr tb[],
	struct net_device *dev,
	const unsigned char *addr, u16 vid)
	{
	return -EOPNOTSUPP;
	}

	static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
	struct netlink_callback *cb,
	struct net_device *dev,
	struct net_device *filter_dev,
	int idx)
	{
	return idx;
	}

	static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
	struct net_device *group_dev,
	bool joining)
	{
	}

	#endif

	#endif /* _LINUX_SWITCHDEV_H_ */