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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 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
51};
52
53struct switchdev_attr {
54 struct net_device *orig_dev;
55 enum switchdev_attr_id id;
56 u32 flags;
57 union {
58 struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
59 u8 stp_state; /* PORT_STP_STATE */
60 unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */
61 u32 ageing_time; /* BRIDGE_AGEING_TIME */
62 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
63 } u;
64};
65
66enum switchdev_obj_id {
67 SWITCHDEV_OBJ_ID_UNDEFINED,
68 SWITCHDEV_OBJ_ID_PORT_VLAN,
69 SWITCHDEV_OBJ_ID_IPV4_FIB,
70 SWITCHDEV_OBJ_ID_PORT_FDB,
71 SWITCHDEV_OBJ_ID_PORT_MDB,
72};
73
74struct switchdev_obj {
75 struct net_device *orig_dev;
76 enum switchdev_obj_id id;
77 u32 flags;
78};
79
80/* SWITCHDEV_OBJ_ID_PORT_VLAN */
81struct switchdev_obj_port_vlan {
82 struct switchdev_obj obj;
83 u16 flags;
84 u16 vid_begin;
85 u16 vid_end;
86};
87
88#define SWITCHDEV_OBJ_PORT_VLAN(obj) \
89 container_of(obj, struct switchdev_obj_port_vlan, obj)
90
91/* SWITCHDEV_OBJ_ID_IPV4_FIB */
92struct switchdev_obj_ipv4_fib {
93 struct switchdev_obj obj;
94 u32 dst;
95 int dst_len;
96 struct fib_info fi;
97 u8 tos;
98 u8 type;
99 u32 nlflags;
100 u32 tb_id;
101};
102
103#define SWITCHDEV_OBJ_IPV4_FIB(obj) \
104 container_of(obj, struct switchdev_obj_ipv4_fib, obj)
105
106/* SWITCHDEV_OBJ_ID_PORT_FDB */
107struct switchdev_obj_port_fdb {
108 struct switchdev_obj obj;
109 unsigned char addr[ETH_ALEN];
110 u16 vid;
111 u16 ndm_state;
112};
113
114#define SWITCHDEV_OBJ_PORT_FDB(obj) \
115 container_of(obj, struct switchdev_obj_port_fdb, obj)
116
117/* SWITCHDEV_OBJ_ID_PORT_MDB */
118struct switchdev_obj_port_mdb {
119 struct switchdev_obj obj;
120 unsigned char addr[ETH_ALEN];
121 u16 vid;
122};
123
124#define SWITCHDEV_OBJ_PORT_MDB(obj) \
125 container_of(obj, struct switchdev_obj_port_mdb, obj)
126
127void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
128 void *data, void (*destructor)(void const *),
129 struct switchdev_trans_item *tritem);
130void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
131
132typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
133
134/**
135 * struct switchdev_ops - switchdev operations
136 *
137 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
138 *
139 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
140 *
141 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
142 *
143 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
144 *
145 * @switchdev_port_obj_dump: Dump port objects (see switchdev_obj_*).
146 */
147struct switchdev_ops {
148 int (*switchdev_port_attr_get)(struct net_device *dev,
149 struct switchdev_attr *attr);
150 int (*switchdev_port_attr_set)(struct net_device *dev,
151 const struct switchdev_attr *attr,
152 struct switchdev_trans *trans);
153 int (*switchdev_port_obj_add)(struct net_device *dev,
154 const struct switchdev_obj *obj,
155 struct switchdev_trans *trans);
156 int (*switchdev_port_obj_del)(struct net_device *dev,
157 const struct switchdev_obj *obj);
158 int (*switchdev_port_obj_dump)(struct net_device *dev,
159 struct switchdev_obj *obj,
160 switchdev_obj_dump_cb_t *cb);
161};
162
163enum switchdev_notifier_type {
164 SWITCHDEV_FDB_ADD = 1,
165 SWITCHDEV_FDB_DEL,
166};
167
168struct switchdev_notifier_info {
169 struct net_device *dev;
170};
171
172struct switchdev_notifier_fdb_info {
173 struct switchdev_notifier_info info; /* must be first */
174 const unsigned char *addr;
175 u16 vid;
176};
177
178static inline struct net_device *
179switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
180{
181 return info->dev;
182}
183
184#ifdef CONFIG_NET_SWITCHDEV
185
186void switchdev_deferred_process(void);
187int switchdev_port_attr_get(struct net_device *dev,
188 struct switchdev_attr *attr);
189int switchdev_port_attr_set(struct net_device *dev,
190 const struct switchdev_attr *attr);
191int switchdev_port_obj_add(struct net_device *dev,
192 const struct switchdev_obj *obj);
193int switchdev_port_obj_del(struct net_device *dev,
194 const struct switchdev_obj *obj);
195int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj,
196 switchdev_obj_dump_cb_t *cb);
197int register_switchdev_notifier(struct notifier_block *nb);
198int unregister_switchdev_notifier(struct notifier_block *nb);
199int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
200 struct switchdev_notifier_info *info);
201int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
202 struct net_device *dev, u32 filter_mask,
203 int nlflags);
204int switchdev_port_bridge_setlink(struct net_device *dev,
205 struct nlmsghdr *nlh, u16 flags);
206int switchdev_port_bridge_dellink(struct net_device *dev,
207 struct nlmsghdr *nlh, u16 flags);
208int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
209 u8 tos, u8 type, u32 nlflags, u32 tb_id);
210int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
211 u8 tos, u8 type, u32 tb_id);
212void switchdev_fib_ipv4_abort(struct fib_info *fi);
213int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
214 struct net_device *dev, const unsigned char *addr,
215 u16 vid, u16 nlm_flags);
216int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
217 struct net_device *dev, const unsigned char *addr,
218 u16 vid);
219int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
220 struct net_device *dev,
221 struct net_device *filter_dev, int idx);
222void switchdev_port_fwd_mark_set(struct net_device *dev,
223 struct net_device *group_dev,
224 bool joining);
225
226#else
227
228static inline void switchdev_deferred_process(void)
229{
230}
231
232static inline int switchdev_port_attr_get(struct net_device *dev,
233 struct switchdev_attr *attr)
234{
235 return -EOPNOTSUPP;
236}
237
238static inline int switchdev_port_attr_set(struct net_device *dev,
239 const struct switchdev_attr *attr)
240{
241 return -EOPNOTSUPP;
242}
243
244static inline int switchdev_port_obj_add(struct net_device *dev,
245 const struct switchdev_obj *obj)
246{
247 return -EOPNOTSUPP;
248}
249
250static inline int switchdev_port_obj_del(struct net_device *dev,
251 const struct switchdev_obj *obj)
252{
253 return -EOPNOTSUPP;
254}
255
256static inline int switchdev_port_obj_dump(struct net_device *dev,
257 const struct switchdev_obj *obj,
258 switchdev_obj_dump_cb_t *cb)
259{
260 return -EOPNOTSUPP;
261}
262
263static inline int register_switchdev_notifier(struct notifier_block *nb)
264{
265 return 0;
266}
267
268static inline int unregister_switchdev_notifier(struct notifier_block *nb)
269{
270 return 0;
271}
272
273static inline int call_switchdev_notifiers(unsigned long val,
274 struct net_device *dev,
275 struct switchdev_notifier_info *info)
276{
277 return NOTIFY_DONE;
278}
279
280static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
281 u32 seq, struct net_device *dev,
282 u32 filter_mask, int nlflags)
283{
284 return -EOPNOTSUPP;
285}
286
287static inline int switchdev_port_bridge_setlink(struct net_device *dev,
288 struct nlmsghdr *nlh,
289 u16 flags)
290{
291 return -EOPNOTSUPP;
292}
293
294static inline int switchdev_port_bridge_dellink(struct net_device *dev,
295 struct nlmsghdr *nlh,
296 u16 flags)
297{
298 return -EOPNOTSUPP;
299}
300
301static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
302 struct fib_info *fi,
303 u8 tos, u8 type,
304 u32 nlflags, u32 tb_id)
305{
306 return 0;
307}
308
309static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
310 struct fib_info *fi,
311 u8 tos, u8 type, u32 tb_id)
312{
313 return 0;
314}
315
316static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
317{
318}
319
320static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
321 struct net_device *dev,
322 const unsigned char *addr,
323 u16 vid, u16 nlm_flags)
324{
325 return -EOPNOTSUPP;
326}
327
328static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
329 struct net_device *dev,
330 const unsigned char *addr, u16 vid)
331{
332 return -EOPNOTSUPP;
333}
334
335static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
336 struct netlink_callback *cb,
337 struct net_device *dev,
338 struct net_device *filter_dev,
339 int idx)
340{
341 return idx;
342}
343
344static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
345 struct net_device *group_dev,
346 bool joining)
347{
348}
349
350#endif
351
352#endif /* _LINUX_SWITCHDEV_H_ */