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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * include/net/switchdev.h - Switch device API
4 * Copyright (c) 2014-2015 Jiri Pirko <[email protected]>
5 * Copyright (c) 2014-2015 Scott Feldman <[email protected]>
6 */
7#ifndef _LINUX_SWITCHDEV_H_
8#define _LINUX_SWITCHDEV_H_
9
10#include <linux/netdevice.h>
11#include <linux/notifier.h>
12#include <linux/list.h>
13#include <net/ip_fib.h>
14
15#define SWITCHDEV_F_NO_RECURSE BIT(0)
16#define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1)
17#define SWITCHDEV_F_DEFER BIT(2)
18
19struct switchdev_trans {
20 bool ph_prepare;
21};
22
23static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
24{
25 return trans && trans->ph_prepare;
26}
27
28static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
29{
30 return trans && !trans->ph_prepare;
31}
32
33enum switchdev_attr_id {
34 SWITCHDEV_ATTR_ID_UNDEFINED,
35 SWITCHDEV_ATTR_ID_PORT_STP_STATE,
36 SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
37 SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS,
38 SWITCHDEV_ATTR_ID_PORT_MROUTER,
39 SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
40 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
41 SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
42 SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
43#if IS_ENABLED(CONFIG_BRIDGE_MRP)
44 SWITCHDEV_ATTR_ID_MRP_PORT_STATE,
45 SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
46#endif
47};
48
49struct switchdev_attr {
50 struct net_device *orig_dev;
51 enum switchdev_attr_id id;
52 u32 flags;
53 void *complete_priv;
54 void (*complete)(struct net_device *dev, int err, void *priv);
55 union {
56 u8 stp_state; /* PORT_STP_STATE */
57 unsigned long brport_flags; /* PORT_{PRE}_BRIDGE_FLAGS */
58 bool mrouter; /* PORT_MROUTER */
59 clock_t ageing_time; /* BRIDGE_AGEING_TIME */
60 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
61 bool mc_disabled; /* MC_DISABLED */
62#if IS_ENABLED(CONFIG_BRIDGE_MRP)
63 u8 mrp_port_state; /* MRP_PORT_STATE */
64 u8 mrp_port_role; /* MRP_PORT_ROLE */
65#endif
66 } u;
67};
68
69enum switchdev_obj_id {
70 SWITCHDEV_OBJ_ID_UNDEFINED,
71 SWITCHDEV_OBJ_ID_PORT_VLAN,
72 SWITCHDEV_OBJ_ID_PORT_MDB,
73 SWITCHDEV_OBJ_ID_HOST_MDB,
74#if IS_ENABLED(CONFIG_BRIDGE_MRP)
75 SWITCHDEV_OBJ_ID_MRP,
76 SWITCHDEV_OBJ_ID_RING_TEST_MRP,
77 SWITCHDEV_OBJ_ID_RING_ROLE_MRP,
78 SWITCHDEV_OBJ_ID_RING_STATE_MRP,
79 SWITCHDEV_OBJ_ID_IN_TEST_MRP,
80 SWITCHDEV_OBJ_ID_IN_ROLE_MRP,
81 SWITCHDEV_OBJ_ID_IN_STATE_MRP,
82
83#endif
84};
85
86struct switchdev_obj {
87 struct net_device *orig_dev;
88 enum switchdev_obj_id id;
89 u32 flags;
90 void *complete_priv;
91 void (*complete)(struct net_device *dev, int err, void *priv);
92};
93
94/* SWITCHDEV_OBJ_ID_PORT_VLAN */
95struct switchdev_obj_port_vlan {
96 struct switchdev_obj obj;
97 u16 flags;
98 u16 vid_begin;
99 u16 vid_end;
100};
101
102#define SWITCHDEV_OBJ_PORT_VLAN(OBJ) \
103 container_of((OBJ), struct switchdev_obj_port_vlan, obj)
104
105/* SWITCHDEV_OBJ_ID_PORT_MDB */
106struct switchdev_obj_port_mdb {
107 struct switchdev_obj obj;
108 unsigned char addr[ETH_ALEN];
109 u16 vid;
110};
111
112#define SWITCHDEV_OBJ_PORT_MDB(OBJ) \
113 container_of((OBJ), struct switchdev_obj_port_mdb, obj)
114
115
116#if IS_ENABLED(CONFIG_BRIDGE_MRP)
117/* SWITCHDEV_OBJ_ID_MRP */
118struct switchdev_obj_mrp {
119 struct switchdev_obj obj;
120 struct net_device *p_port;
121 struct net_device *s_port;
122 u32 ring_id;
123 u16 prio;
124};
125
126#define SWITCHDEV_OBJ_MRP(OBJ) \
127 container_of((OBJ), struct switchdev_obj_mrp, obj)
128
129/* SWITCHDEV_OBJ_ID_RING_TEST_MRP */
130struct switchdev_obj_ring_test_mrp {
131 struct switchdev_obj obj;
132 /* The value is in us and a value of 0 represents to stop */
133 u32 interval;
134 u8 max_miss;
135 u32 ring_id;
136 u32 period;
137 bool monitor;
138};
139
140#define SWITCHDEV_OBJ_RING_TEST_MRP(OBJ) \
141 container_of((OBJ), struct switchdev_obj_ring_test_mrp, obj)
142
143/* SWICHDEV_OBJ_ID_RING_ROLE_MRP */
144struct switchdev_obj_ring_role_mrp {
145 struct switchdev_obj obj;
146 u8 ring_role;
147 u32 ring_id;
148};
149
150#define SWITCHDEV_OBJ_RING_ROLE_MRP(OBJ) \
151 container_of((OBJ), struct switchdev_obj_ring_role_mrp, obj)
152
153struct switchdev_obj_ring_state_mrp {
154 struct switchdev_obj obj;
155 u8 ring_state;
156 u32 ring_id;
157};
158
159#define SWITCHDEV_OBJ_RING_STATE_MRP(OBJ) \
160 container_of((OBJ), struct switchdev_obj_ring_state_mrp, obj)
161
162/* SWITCHDEV_OBJ_ID_IN_TEST_MRP */
163struct switchdev_obj_in_test_mrp {
164 struct switchdev_obj obj;
165 /* The value is in us and a value of 0 represents to stop */
166 u32 interval;
167 u32 in_id;
168 u32 period;
169 u8 max_miss;
170};
171
172#define SWITCHDEV_OBJ_IN_TEST_MRP(OBJ) \
173 container_of((OBJ), struct switchdev_obj_in_test_mrp, obj)
174
175/* SWICHDEV_OBJ_ID_IN_ROLE_MRP */
176struct switchdev_obj_in_role_mrp {
177 struct switchdev_obj obj;
178 struct net_device *i_port;
179 u32 ring_id;
180 u16 in_id;
181 u8 in_role;
182};
183
184#define SWITCHDEV_OBJ_IN_ROLE_MRP(OBJ) \
185 container_of((OBJ), struct switchdev_obj_in_role_mrp, obj)
186
187struct switchdev_obj_in_state_mrp {
188 struct switchdev_obj obj;
189 u32 in_id;
190 u8 in_state;
191};
192
193#define SWITCHDEV_OBJ_IN_STATE_MRP(OBJ) \
194 container_of((OBJ), struct switchdev_obj_in_state_mrp, obj)
195
196#endif
197
198typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
199
200enum switchdev_notifier_type {
201 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
202 SWITCHDEV_FDB_DEL_TO_BRIDGE,
203 SWITCHDEV_FDB_ADD_TO_DEVICE,
204 SWITCHDEV_FDB_DEL_TO_DEVICE,
205 SWITCHDEV_FDB_OFFLOADED,
206
207 SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
208 SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */
209 SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */
210
211 SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE,
212 SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE,
213 SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE,
214 SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE,
215 SWITCHDEV_VXLAN_FDB_OFFLOADED,
216};
217
218struct switchdev_notifier_info {
219 struct net_device *dev;
220 struct netlink_ext_ack *extack;
221};
222
223struct switchdev_notifier_fdb_info {
224 struct switchdev_notifier_info info; /* must be first */
225 const unsigned char *addr;
226 u16 vid;
227 u8 added_by_user:1,
228 offloaded:1;
229};
230
231struct switchdev_notifier_port_obj_info {
232 struct switchdev_notifier_info info; /* must be first */
233 const struct switchdev_obj *obj;
234 struct switchdev_trans *trans;
235 bool handled;
236};
237
238struct switchdev_notifier_port_attr_info {
239 struct switchdev_notifier_info info; /* must be first */
240 const struct switchdev_attr *attr;
241 struct switchdev_trans *trans;
242 bool handled;
243};
244
245static inline struct net_device *
246switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
247{
248 return info->dev;
249}
250
251static inline struct netlink_ext_ack *
252switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info)
253{
254 return info->extack;
255}
256
257#ifdef CONFIG_NET_SWITCHDEV
258
259void switchdev_deferred_process(void);
260int switchdev_port_attr_set(struct net_device *dev,
261 const struct switchdev_attr *attr);
262int switchdev_port_obj_add(struct net_device *dev,
263 const struct switchdev_obj *obj,
264 struct netlink_ext_ack *extack);
265int switchdev_port_obj_del(struct net_device *dev,
266 const struct switchdev_obj *obj);
267
268int register_switchdev_notifier(struct notifier_block *nb);
269int unregister_switchdev_notifier(struct notifier_block *nb);
270int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
271 struct switchdev_notifier_info *info,
272 struct netlink_ext_ack *extack);
273
274int register_switchdev_blocking_notifier(struct notifier_block *nb);
275int unregister_switchdev_blocking_notifier(struct notifier_block *nb);
276int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
277 struct switchdev_notifier_info *info,
278 struct netlink_ext_ack *extack);
279
280void switchdev_port_fwd_mark_set(struct net_device *dev,
281 struct net_device *group_dev,
282 bool joining);
283
284int switchdev_handle_port_obj_add(struct net_device *dev,
285 struct switchdev_notifier_port_obj_info *port_obj_info,
286 bool (*check_cb)(const struct net_device *dev),
287 int (*add_cb)(struct net_device *dev,
288 const struct switchdev_obj *obj,
289 struct switchdev_trans *trans,
290 struct netlink_ext_ack *extack));
291int switchdev_handle_port_obj_del(struct net_device *dev,
292 struct switchdev_notifier_port_obj_info *port_obj_info,
293 bool (*check_cb)(const struct net_device *dev),
294 int (*del_cb)(struct net_device *dev,
295 const struct switchdev_obj *obj));
296
297int switchdev_handle_port_attr_set(struct net_device *dev,
298 struct switchdev_notifier_port_attr_info *port_attr_info,
299 bool (*check_cb)(const struct net_device *dev),
300 int (*set_cb)(struct net_device *dev,
301 const struct switchdev_attr *attr,
302 struct switchdev_trans *trans));
303#else
304
305static inline void switchdev_deferred_process(void)
306{
307}
308
309static inline int switchdev_port_attr_set(struct net_device *dev,
310 const struct switchdev_attr *attr)
311{
312 return -EOPNOTSUPP;
313}
314
315static inline int switchdev_port_obj_add(struct net_device *dev,
316 const struct switchdev_obj *obj,
317 struct netlink_ext_ack *extack)
318{
319 return -EOPNOTSUPP;
320}
321
322static inline int switchdev_port_obj_del(struct net_device *dev,
323 const struct switchdev_obj *obj)
324{
325 return -EOPNOTSUPP;
326}
327
328static inline int register_switchdev_notifier(struct notifier_block *nb)
329{
330 return 0;
331}
332
333static inline int unregister_switchdev_notifier(struct notifier_block *nb)
334{
335 return 0;
336}
337
338static inline int call_switchdev_notifiers(unsigned long val,
339 struct net_device *dev,
340 struct switchdev_notifier_info *info,
341 struct netlink_ext_ack *extack)
342{
343 return NOTIFY_DONE;
344}
345
346static inline int
347register_switchdev_blocking_notifier(struct notifier_block *nb)
348{
349 return 0;
350}
351
352static inline int
353unregister_switchdev_blocking_notifier(struct notifier_block *nb)
354{
355 return 0;
356}
357
358static inline int
359call_switchdev_blocking_notifiers(unsigned long val,
360 struct net_device *dev,
361 struct switchdev_notifier_info *info,
362 struct netlink_ext_ack *extack)
363{
364 return NOTIFY_DONE;
365}
366
367static inline int
368switchdev_handle_port_obj_add(struct net_device *dev,
369 struct switchdev_notifier_port_obj_info *port_obj_info,
370 bool (*check_cb)(const struct net_device *dev),
371 int (*add_cb)(struct net_device *dev,
372 const struct switchdev_obj *obj,
373 struct switchdev_trans *trans,
374 struct netlink_ext_ack *extack))
375{
376 return 0;
377}
378
379static inline int
380switchdev_handle_port_obj_del(struct net_device *dev,
381 struct switchdev_notifier_port_obj_info *port_obj_info,
382 bool (*check_cb)(const struct net_device *dev),
383 int (*del_cb)(struct net_device *dev,
384 const struct switchdev_obj *obj))
385{
386 return 0;
387}
388
389static inline int
390switchdev_handle_port_attr_set(struct net_device *dev,
391 struct switchdev_notifier_port_attr_info *port_attr_info,
392 bool (*check_cb)(const struct net_device *dev),
393 int (*set_cb)(struct net_device *dev,
394 const struct switchdev_attr *attr,
395 struct switchdev_trans *trans))
396{
397 return 0;
398}
399#endif
400
401#endif /* _LINUX_SWITCHDEV_H_ */