projects/linux·blob v4.4-rc5 · refs

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1/*
2 * include/net/switchdev.h - Switch device API
3 * Copyright (c) 2014-2015 Jiri Pirko <[email protected]>
4 * Copyright (c) 2014-2015 Scott Feldman <[email protected]>
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>
15#include <linux/notifier.h>
16#include <linux/list.h>
17#include <net/ip_fib.h>
18
19#define SWITCHDEV_F_NO_RECURSE BIT(0)
20#define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1)
21#define SWITCHDEV_F_DEFER BIT(2)
22
23struct switchdev_trans_item {
24 struct list_head list;
25 void *data;
26 void (*destructor)(const void *data);
27};
28
29struct switchdev_trans {
30 struct list_head item_list;
31 bool ph_prepare;
32};
33
34static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
35{
36 return trans && trans->ph_prepare;
37}
38
39static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
40{
41 return trans && !trans->ph_prepare;
42}
43
44enum switchdev_attr_id {
45 SWITCHDEV_ATTR_ID_UNDEFINED,
46 SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
47 SWITCHDEV_ATTR_ID_PORT_STP_STATE,
48 SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
49 SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
50};
51
52struct switchdev_attr {
53 enum switchdev_attr_id id;
54 u32 flags;
55 union {
56 struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
57 u8 stp_state; /* PORT_STP_STATE */
58 unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */
59 u32 ageing_time; /* BRIDGE_AGEING_TIME */
60 } u;
61};
62
63enum switchdev_obj_id {
64 SWITCHDEV_OBJ_ID_UNDEFINED,
65 SWITCHDEV_OBJ_ID_PORT_VLAN,
66 SWITCHDEV_OBJ_ID_IPV4_FIB,
67 SWITCHDEV_OBJ_ID_PORT_FDB,
68};
69
70struct switchdev_obj {
71 enum switchdev_obj_id id;
72 u32 flags;
73};
74
75/* SWITCHDEV_OBJ_ID_PORT_VLAN */
76struct switchdev_obj_port_vlan {
77 struct switchdev_obj obj;
78 u16 flags;
79 u16 vid_begin;
80 u16 vid_end;
81};
82
83#define SWITCHDEV_OBJ_PORT_VLAN(obj) \
84 container_of(obj, struct switchdev_obj_port_vlan, obj)
85
86/* SWITCHDEV_OBJ_ID_IPV4_FIB */
87struct switchdev_obj_ipv4_fib {
88 struct switchdev_obj obj;
89 u32 dst;
90 int dst_len;
91 struct fib_info fi;
92 u8 tos;
93 u8 type;
94 u32 nlflags;
95 u32 tb_id;
96};
97
98#define SWITCHDEV_OBJ_IPV4_FIB(obj) \
99 container_of(obj, struct switchdev_obj_ipv4_fib, obj)
100
101/* SWITCHDEV_OBJ_ID_PORT_FDB */
102struct switchdev_obj_port_fdb {
103 struct switchdev_obj obj;
104 unsigned char addr[ETH_ALEN];
105 u16 vid;
106 u16 ndm_state;
107};
108
109#define SWITCHDEV_OBJ_PORT_FDB(obj) \
110 container_of(obj, struct switchdev_obj_port_fdb, obj)
111
112void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
113 void *data, void (*destructor)(void const *),
114 struct switchdev_trans_item *tritem);
115void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
116
117typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
118
119/**
120 * struct switchdev_ops - switchdev operations
121 *
122 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
123 *
124 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
125 *
126 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
127 *
128 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
129 *
130 * @switchdev_port_obj_dump: Dump port objects (see switchdev_obj_*).
131 */
132struct switchdev_ops {
133 int (*switchdev_port_attr_get)(struct net_device *dev,
134 struct switchdev_attr *attr);
135 int (*switchdev_port_attr_set)(struct net_device *dev,
136 const struct switchdev_attr *attr,
137 struct switchdev_trans *trans);
138 int (*switchdev_port_obj_add)(struct net_device *dev,
139 const struct switchdev_obj *obj,
140 struct switchdev_trans *trans);
141 int (*switchdev_port_obj_del)(struct net_device *dev,
142 const struct switchdev_obj *obj);
143 int (*switchdev_port_obj_dump)(struct net_device *dev,
144 struct switchdev_obj *obj,
145 switchdev_obj_dump_cb_t *cb);
146};
147
148enum switchdev_notifier_type {
149 SWITCHDEV_FDB_ADD = 1,
150 SWITCHDEV_FDB_DEL,
151};
152
153struct switchdev_notifier_info {
154 struct net_device *dev;
155};
156
157struct switchdev_notifier_fdb_info {
158 struct switchdev_notifier_info info; /* must be first */
159 const unsigned char *addr;
160 u16 vid;
161};
162
163static inline struct net_device *
164switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
165{
166 return info->dev;
167}
168
169#ifdef CONFIG_NET_SWITCHDEV
170
171void switchdev_deferred_process(void);
172int switchdev_port_attr_get(struct net_device *dev,
173 struct switchdev_attr *attr);
174int switchdev_port_attr_set(struct net_device *dev,
175 const struct switchdev_attr *attr);
176int switchdev_port_obj_add(struct net_device *dev,
177 const struct switchdev_obj *obj);
178int switchdev_port_obj_del(struct net_device *dev,
179 const struct switchdev_obj *obj);
180int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj,
181 switchdev_obj_dump_cb_t *cb);
182int register_switchdev_notifier(struct notifier_block *nb);
183int unregister_switchdev_notifier(struct notifier_block *nb);
184int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
185 struct switchdev_notifier_info *info);
186int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
187 struct net_device *dev, u32 filter_mask,
188 int nlflags);
189int switchdev_port_bridge_setlink(struct net_device *dev,
190 struct nlmsghdr *nlh, u16 flags);
191int switchdev_port_bridge_dellink(struct net_device *dev,
192 struct nlmsghdr *nlh, u16 flags);
193int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
194 u8 tos, u8 type, u32 nlflags, u32 tb_id);
195int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
196 u8 tos, u8 type, u32 tb_id);
197void switchdev_fib_ipv4_abort(struct fib_info *fi);
198int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
199 struct net_device *dev, const unsigned char *addr,
200 u16 vid, u16 nlm_flags);
201int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
202 struct net_device *dev, const unsigned char *addr,
203 u16 vid);
204int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
205 struct net_device *dev,
206 struct net_device *filter_dev, int idx);
207void switchdev_port_fwd_mark_set(struct net_device *dev,
208 struct net_device *group_dev,
209 bool joining);
210
211#else
212
213static inline void switchdev_deferred_process(void)
214{
215}
216
217static inline int switchdev_port_attr_get(struct net_device *dev,
218 struct switchdev_attr *attr)
219{
220 return -EOPNOTSUPP;
221}
222
223static inline int switchdev_port_attr_set(struct net_device *dev,
224 const struct switchdev_attr *attr)
225{
226 return -EOPNOTSUPP;
227}
228
229static inline int switchdev_port_obj_add(struct net_device *dev,
230 const struct switchdev_obj *obj)
231{
232 return -EOPNOTSUPP;
233}
234
235static inline int switchdev_port_obj_del(struct net_device *dev,
236 const struct switchdev_obj *obj)
237{
238 return -EOPNOTSUPP;
239}
240
241static inline int switchdev_port_obj_dump(struct net_device *dev,
242 const struct switchdev_obj *obj,
243 switchdev_obj_dump_cb_t *cb)
244{
245 return -EOPNOTSUPP;
246}
247
248static inline int register_switchdev_notifier(struct notifier_block *nb)
249{
250 return 0;
251}
252
253static inline int unregister_switchdev_notifier(struct notifier_block *nb)
254{
255 return 0;
256}
257
258static inline int call_switchdev_notifiers(unsigned long val,
259 struct net_device *dev,
260 struct switchdev_notifier_info *info)
261{
262 return NOTIFY_DONE;
263}
264
265static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
266 u32 seq, struct net_device *dev,
267 u32 filter_mask, int nlflags)
268{
269 return -EOPNOTSUPP;
270}
271
272static inline int switchdev_port_bridge_setlink(struct net_device *dev,
273 struct nlmsghdr *nlh,
274 u16 flags)
275{
276 return -EOPNOTSUPP;
277}
278
279static inline int switchdev_port_bridge_dellink(struct net_device *dev,
280 struct nlmsghdr *nlh,
281 u16 flags)
282{
283 return -EOPNOTSUPP;
284}
285
286static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
287 struct fib_info *fi,
288 u8 tos, u8 type,
289 u32 nlflags, u32 tb_id)
290{
291 return 0;
292}
293
294static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
295 struct fib_info *fi,
296 u8 tos, u8 type, u32 tb_id)
297{
298 return 0;
299}
300
301static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
302{
303}
304
305static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
306 struct net_device *dev,
307 const unsigned char *addr,
308 u16 vid, u16 nlm_flags)
309{
310 return -EOPNOTSUPP;
311}
312
313static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
314 struct net_device *dev,
315 const unsigned char *addr, u16 vid)
316{
317 return -EOPNOTSUPP;
318}
319
320static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
321 struct netlink_callback *cb,
322 struct net_device *dev,
323 struct net_device *filter_dev,
324 int idx)
325{
326 return idx;
327}
328
329static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
330 struct net_device *group_dev,
331 bool joining)
332{
333}
334
335#endif
336
337#endif /* _LINUX_SWITCHDEV_H_ */