[deliverable/linux.git] / include / net / 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>

#define SWITCHDEV_F_NO_RECURSE		BIT(0)

enum switchdev_trans_ph {
	SWITCHDEV_TRANS_PREPARE,
	SWITCHDEV_TRANS_COMMIT,
};

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

struct switchdev_trans {
	struct list_head item_list;
	enum switchdev_trans_ph ph;
};

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

static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
{
	return trans && trans->ph == SWITCHDEV_TRANS_COMMIT;
}

enum switchdev_attr_id {
	SWITCHDEV_ATTR_UNDEFINED,
	SWITCHDEV_ATTR_PORT_PARENT_ID,
	SWITCHDEV_ATTR_PORT_STP_STATE,
	SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS,
};

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 */
	} u;
};

struct fib_info;

enum switchdev_obj_id {
	SWITCHDEV_OBJ_UNDEFINED,
	SWITCHDEV_OBJ_PORT_VLAN,
	SWITCHDEV_OBJ_IPV4_FIB,
	SWITCHDEV_OBJ_PORT_FDB,
};

struct switchdev_obj {
	enum switchdev_obj_id id;
	int (*cb)(struct net_device *dev, struct switchdev_obj *obj);
	union {
		struct switchdev_obj_vlan {		/* PORT_VLAN */
			u16 flags;
			u16 vid_begin;
			u16 vid_end;
		} vlan;
		struct switchdev_obj_ipv4_fib {		/* IPV4_FIB */
			u32 dst;
			int dst_len;
			struct fib_info *fi;
			u8 tos;
			u8 type;
			u32 nlflags;
			u32 tb_id;
		} ipv4_fib;
		struct switchdev_obj_fdb {		/* PORT_FDB */
			const unsigned char *addr;
			u16 vid;
			u16 ndm_state;
		} fdb;
	} u;
};

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);

/**
 * 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,
					   struct switchdev_attr *attr,
					   struct switchdev_trans *trans);
	int	(*switchdev_port_obj_add)(struct net_device *dev,
					  struct switchdev_obj *obj,
					  struct switchdev_trans *trans);
	int	(*switchdev_port_obj_del)(struct net_device *dev,
					  struct switchdev_obj *obj);
	int	(*switchdev_port_obj_dump)(struct net_device *dev,
					  struct switchdev_obj *obj);
};

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

int switchdev_port_attr_get(struct net_device *dev,
			    struct switchdev_attr *attr);
int switchdev_port_attr_set(struct net_device *dev,
			    struct switchdev_attr *attr);
int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj);
int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj);
int switchdev_port_obj_dump(struct net_device *dev, 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);
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 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,
					  struct switchdev_attr *attr)
{
	return -EOPNOTSUPP;
}

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

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

static inline int switchdev_port_obj_dump(struct net_device *dev,
					  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)
{
	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 -EOPNOTSUPP;
}

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

#endif

#endif /* _LINUX_SWITCHDEV_H_ */
Commit	Line	Data
007f790c JP	1	/*
007f790c JP	2	* include/net/switchdev.h - Switch device API
7ea6eb3f	3	* Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us>
f8f21471	4	* Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com>
007f790c JP	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*/
	11	#ifndef _LINUX_SWITCHDEV_H_
	12	#define _LINUX_SWITCHDEV_H_
	13
	14	#include <linux/netdevice.h>
03bf0c28	15	#include <linux/notifier.h>
7ea6eb3f	16	#include <linux/list.h>
03bf0c28	17
3094333d SF	18	#define SWITCHDEV_F_NO_RECURSE BIT(0)
3094333d SF	19
69f5df49	20	enum switchdev_trans_ph {
3094333d	21	SWITCHDEV_TRANS_PREPARE,
3094333d SF	22	SWITCHDEV_TRANS_COMMIT,
	23	};
	24
7ea6eb3f JP	25	struct switchdev_trans_item {
	26	struct list_head list;
	27	void *data;
	28	void (destructor)(const void data);
	29	};
	30
	31	struct switchdev_trans {
	32	struct list_head item_list;
f8db8348	33	enum switchdev_trans_ph ph;
7ea6eb3f JP	34	};
7ea6eb3f JP	35
8bdb4272 JP	36	static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
	37	{
	38	return trans && trans->ph == SWITCHDEV_TRANS_PREPARE;
	39	}
	40
	41	static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
	42	{
	43	return trans && trans->ph == SWITCHDEV_TRANS_COMMIT;
	44	}
	45
3094333d SF	46	enum switchdev_attr_id {
3094333d SF	47	SWITCHDEV_ATTR_UNDEFINED,
f8e20a9f	48	SWITCHDEV_ATTR_PORT_PARENT_ID,
35636062	49	SWITCHDEV_ATTR_PORT_STP_STATE,
6004c867	50	SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS,
3094333d SF	51	};
	52
	53	struct switchdev_attr {
	54	enum switchdev_attr_id id;
3094333d	55	u32 flags;
f8e20a9f SF	56	union {
f8e20a9f SF	57	struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
35636062	58	u8 stp_state; /* PORT_STP_STATE */
6004c867	59	unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */
42275bd8	60	} u;
3094333d SF	61	};
3094333d SF	62
4170604f SF	63	struct fib_info;
4170604f SF	64
491d0f15 SF	65	enum switchdev_obj_id {
491d0f15 SF	66	SWITCHDEV_OBJ_UNDEFINED,
6fc3016d	67	SWITCHDEV_OBJ_PORT_VLAN,
58c2cb16	68	SWITCHDEV_OBJ_IPV4_FIB,
45d4122c	69	SWITCHDEV_OBJ_PORT_FDB,
491d0f15 SF	70	};
	71
	72	struct switchdev_obj {
	73	enum switchdev_obj_id id;
45d4122c	74	int (cb)(struct net_device dev, struct switchdev_obj *obj);
6fc3016d	75	union {
5eb764ed	76	struct switchdev_obj_vlan { /* PORT_VLAN */
6fc3016d	77	u16 flags;
3e3a78b4	78	u16 vid_begin;
6fc3016d SF	79	u16 vid_end;
6fc3016d SF	80	} vlan;
58c2cb16 SF	81	struct switchdev_obj_ipv4_fib { /* IPV4_FIB */
	82	u32 dst;
	83	int dst_len;
	84	struct fib_info *fi;
	85	u8 tos;
	86	u8 type;
	87	u32 nlflags;
	88	u32 tb_id;
	89	} ipv4_fib;
45d4122c	90	struct switchdev_obj_fdb { /* PORT_FDB */
cdf09697	91	const unsigned char *addr;
45d4122c	92	u16 vid;
ce80e7bc	93	u16 ndm_state;
45d4122c	94	} fdb;
42275bd8	95	} u;
491d0f15 SF	96	};
491d0f15 SF	97
7ea6eb3f JP	98	void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
	99	void data, void (destructor)(void const *),
	100	struct switchdev_trans_item *tritem);
	101	void switchdev_trans_item_dequeue(struct switchdev_trans trans);
	102
4170604f SF	103	/**
	104	* struct switchdev_ops - switchdev operations
	105	*
3094333d SF	106	* @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
	107	*
	108	* @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
	109	*
491d0f15 SF	110	* @switchdev_port_obj_add: Add an object to port (see switchdev_obj).
	111	*
	112	* @switchdev_port_obj_del: Delete an object from port (see switchdev_obj).
45d4122c SS	113	*
45d4122c SS	114	* @switchdev_port_obj_dump: Dump port objects (see switchdev_obj).
4170604f	115	*/
9d47c0a2	116	struct switchdev_ops {
3094333d SF	117	int (switchdev_port_attr_get)(struct net_device dev,
	118	struct switchdev_attr *attr);
	119	int (switchdev_port_attr_set)(struct net_device dev,
7ea6eb3f JP	120	struct switchdev_attr *attr,
7ea6eb3f JP	121	struct switchdev_trans *trans);
491d0f15	122	int (switchdev_port_obj_add)(struct net_device dev,
7ea6eb3f JP	123	struct switchdev_obj *obj,
7ea6eb3f JP	124	struct switchdev_trans *trans);
491d0f15 SF	125	int (switchdev_port_obj_del)(struct net_device dev,
491d0f15 SF	126	struct switchdev_obj *obj);
45d4122c SS	127	int (switchdev_port_obj_dump)(struct net_device dev,
45d4122c SS	128	struct switchdev_obj *obj);
4170604f SF	129	};
4170604f SF	130
ebb9a03a JP	131	enum switchdev_notifier_type {
	132	SWITCHDEV_FDB_ADD = 1,
	133	SWITCHDEV_FDB_DEL,
3aeb6617 JP	134	};
3aeb6617 JP	135
ebb9a03a	136	struct switchdev_notifier_info {
03bf0c28 JP	137	struct net_device *dev;
	138	};
	139
ebb9a03a JP	140	struct switchdev_notifier_fdb_info {
ebb9a03a JP	141	struct switchdev_notifier_info info; /* must be first */
3aeb6617 JP	142	const unsigned char *addr;
	143	u16 vid;
	144	};
	145
03bf0c28	146	static inline struct net_device *
ebb9a03a	147	switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
03bf0c28 JP	148	{
	149	return info->dev;
	150	}
007f790c JP	151
	152	#ifdef CONFIG_NET_SWITCHDEV
	153
3094333d SF	154	int switchdev_port_attr_get(struct net_device *dev,
	155	struct switchdev_attr *attr);
	156	int switchdev_port_attr_set(struct net_device *dev,
	157	struct switchdev_attr *attr);
491d0f15 SF	158	int switchdev_port_obj_add(struct net_device dev, struct switchdev_obj obj);
491d0f15 SF	159	int switchdev_port_obj_del(struct net_device dev, struct switchdev_obj obj);
45d4122c	160	int switchdev_port_obj_dump(struct net_device dev, struct switchdev_obj obj);
ebb9a03a JP	161	int register_switchdev_notifier(struct notifier_block *nb);
	162	int unregister_switchdev_notifier(struct notifier_block *nb);
	163	int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
	164	struct switchdev_notifier_info *info);
8793d0a6 SF	165	int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
	166	struct net_device *dev, u32 filter_mask,
	167	int nlflags);
ebb9a03a JP	168	int switchdev_port_bridge_setlink(struct net_device *dev,
	169	struct nlmsghdr *nlh, u16 flags);
	170	int switchdev_port_bridge_dellink(struct net_device *dev,
	171	struct nlmsghdr *nlh, u16 flags);
ebb9a03a JP	172	int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
	173	u8 tos, u8 type, u32 nlflags, u32 tb_id);
	174	int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
	175	u8 tos, u8 type, u32 tb_id);
	176	void switchdev_fib_ipv4_abort(struct fib_info *fi);
45d4122c SS	177	int switchdev_port_fdb_add(struct ndmsg ndm, struct nlattr tb[],
	178	struct net_device dev, const unsigned char addr,
	179	u16 vid, u16 nlm_flags);
	180	int switchdev_port_fdb_del(struct ndmsg ndm, struct nlattr tb[],
	181	struct net_device dev, const unsigned char addr,
	182	u16 vid);
	183	int switchdev_port_fdb_dump(struct sk_buff skb, struct netlink_callback cb,
	184	struct net_device *dev,
	185	struct net_device *filter_dev, int idx);
1a3b2ec9 SF	186	void switchdev_port_fwd_mark_set(struct net_device *dev,
	187	struct net_device *group_dev,
	188	bool joining);
5e8d9049	189
007f790c JP	190	#else
007f790c JP	191
3094333d SF	192	static inline int switchdev_port_attr_get(struct net_device *dev,
	193	struct switchdev_attr *attr)
	194	{
	195	return -EOPNOTSUPP;
	196	}
	197
	198	static inline int switchdev_port_attr_set(struct net_device *dev,
	199	struct switchdev_attr *attr)
	200	{
	201	return -EOPNOTSUPP;
	202	}
	203
491d0f15 SF	204	static inline int switchdev_port_obj_add(struct net_device *dev,
	205	struct switchdev_obj *obj)
	206	{
	207	return -EOPNOTSUPP;
	208	}
	209
	210	static inline int switchdev_port_obj_del(struct net_device *dev,
	211	struct switchdev_obj *obj)
	212	{
	213	return -EOPNOTSUPP;
	214	}
	215
45d4122c SS	216	static inline int switchdev_port_obj_dump(struct net_device *dev,
	217	struct switchdev_obj *obj)
	218	{
	219	return -EOPNOTSUPP;
	220	}
	221
ebb9a03a	222	static inline int register_switchdev_notifier(struct notifier_block *nb)
03bf0c28 JP	223	{
	224	return 0;
	225	}
	226
ebb9a03a	227	static inline int unregister_switchdev_notifier(struct notifier_block *nb)
03bf0c28 JP	228	{
	229	return 0;
	230	}
	231
ebb9a03a JP	232	static inline int call_switchdev_notifiers(unsigned long val,
	233	struct net_device *dev,
	234	struct switchdev_notifier_info *info)
03bf0c28 JP	235	{
	236	return NOTIFY_DONE;
	237	}
	238
8793d0a6 SF	239	static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
	240	u32 seq, struct net_device *dev,
	241	u32 filter_mask, int nlflags)
	242	{
	243	return -EOPNOTSUPP;
	244	}
	245
ebb9a03a JP	246	static inline int switchdev_port_bridge_setlink(struct net_device *dev,
	247	struct nlmsghdr *nlh,
	248	u16 flags)
8a44dbb2 RP	249	{
	250	return -EOPNOTSUPP;
	251	}
	252
ebb9a03a JP	253	static inline int switchdev_port_bridge_dellink(struct net_device *dev,
	254	struct nlmsghdr *nlh,
	255	u16 flags)
8a44dbb2 RP	256	{
	257	return -EOPNOTSUPP;
	258	}
	259
ebb9a03a JP	260	static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
	261	struct fib_info *fi,
	262	u8 tos, u8 type,
	263	u32 nlflags, u32 tb_id)
5e8d9049 SF	264	{
	265	return 0;
	266	}
	267
ebb9a03a JP	268	static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
	269	struct fib_info *fi,
	270	u8 tos, u8 type, u32 tb_id)
5e8d9049 SF	271	{
	272	return 0;
	273	}
	274
ebb9a03a	275	static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
8e05fd71 SF	276	{
	277	}
	278
45d4122c SS	279	static inline int switchdev_port_fdb_add(struct ndmsg ndm, struct nlattr tb[],
	280	struct net_device *dev,
	281	const unsigned char *addr,
	282	u16 vid, u16 nlm_flags)
	283	{
	284	return -EOPNOTSUPP;
	285	}
	286
	287	static inline int switchdev_port_fdb_del(struct ndmsg ndm, struct nlattr tb[],
	288	struct net_device *dev,
	289	const unsigned char *addr, u16 vid)
	290	{
	291	return -EOPNOTSUPP;
	292	}
	293
	294	static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
	295	struct netlink_callback *cb,
	296	struct net_device *dev,
	297	struct net_device *filter_dev,
	298	int idx)
	299	{
	300	return -EOPNOTSUPP;
	301	}
	302
1a3b2ec9 SF	303	static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
	304	struct net_device *group_dev,
	305	bool joining)
	306	{
	307	}
	308
007f790c JP	309	#endif
	310
	311	#endif /* _LINUX_SWITCHDEV_H_ */