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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 SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
207
208 SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
209 SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */
210 SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */
211
212 SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE,
213 SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE,
214 SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE,
215 SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE,
216 SWITCHDEV_VXLAN_FDB_OFFLOADED,
217};
218
219struct switchdev_notifier_info {
220 struct net_device *dev;
221 struct netlink_ext_ack *extack;
222};
223
224struct switchdev_notifier_fdb_info {
225 struct switchdev_notifier_info info; /* must be first */
226 const unsigned char *addr;
227 u16 vid;
228 u8 added_by_user:1,
229 offloaded:1;
230};
231
232struct switchdev_notifier_port_obj_info {
233 struct switchdev_notifier_info info; /* must be first */
234 const struct switchdev_obj *obj;
235 struct switchdev_trans *trans;
236 bool handled;
237};
238
239struct switchdev_notifier_port_attr_info {
240 struct switchdev_notifier_info info; /* must be first */
241 const struct switchdev_attr *attr;
242 struct switchdev_trans *trans;
243 bool handled;
244};
245
246static inline struct net_device *
247switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
248{
249 return info->dev;
250}
251
252static inline struct netlink_ext_ack *
253switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info)
254{
255 return info->extack;
256}
257
258#ifdef CONFIG_NET_SWITCHDEV
259
260void switchdev_deferred_process(void);
261int switchdev_port_attr_set(struct net_device *dev,
262 const struct switchdev_attr *attr);
263int switchdev_port_obj_add(struct net_device *dev,
264 const struct switchdev_obj *obj,
265 struct netlink_ext_ack *extack);
266int switchdev_port_obj_del(struct net_device *dev,
267 const struct switchdev_obj *obj);
268
269int register_switchdev_notifier(struct notifier_block *nb);
270int unregister_switchdev_notifier(struct notifier_block *nb);
271int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
272 struct switchdev_notifier_info *info,
273 struct netlink_ext_ack *extack);
274
275int register_switchdev_blocking_notifier(struct notifier_block *nb);
276int unregister_switchdev_blocking_notifier(struct notifier_block *nb);
277int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
278 struct switchdev_notifier_info *info,
279 struct netlink_ext_ack *extack);
280
281void switchdev_port_fwd_mark_set(struct net_device *dev,
282 struct net_device *group_dev,
283 bool joining);
284
285int switchdev_handle_port_obj_add(struct net_device *dev,
286 struct switchdev_notifier_port_obj_info *port_obj_info,
287 bool (*check_cb)(const struct net_device *dev),
288 int (*add_cb)(struct net_device *dev,
289 const struct switchdev_obj *obj,
290 struct switchdev_trans *trans,
291 struct netlink_ext_ack *extack));
292int switchdev_handle_port_obj_del(struct net_device *dev,
293 struct switchdev_notifier_port_obj_info *port_obj_info,
294 bool (*check_cb)(const struct net_device *dev),
295 int (*del_cb)(struct net_device *dev,
296 const struct switchdev_obj *obj));
297
298int switchdev_handle_port_attr_set(struct net_device *dev,
299 struct switchdev_notifier_port_attr_info *port_attr_info,
300 bool (*check_cb)(const struct net_device *dev),
301 int (*set_cb)(struct net_device *dev,
302 const struct switchdev_attr *attr,
303 struct switchdev_trans *trans));
304#else
305
306static inline void switchdev_deferred_process(void)
307{
308}
309
310static inline int switchdev_port_attr_set(struct net_device *dev,
311 const struct switchdev_attr *attr)
312{
313 return -EOPNOTSUPP;
314}
315
316static inline int switchdev_port_obj_add(struct net_device *dev,
317 const struct switchdev_obj *obj,
318 struct netlink_ext_ack *extack)
319{
320 return -EOPNOTSUPP;
321}
322
323static inline int switchdev_port_obj_del(struct net_device *dev,
324 const struct switchdev_obj *obj)
325{
326 return -EOPNOTSUPP;
327}
328
329static inline int register_switchdev_notifier(struct notifier_block *nb)
330{
331 return 0;
332}
333
334static inline int unregister_switchdev_notifier(struct notifier_block *nb)
335{
336 return 0;
337}
338
339static inline int call_switchdev_notifiers(unsigned long val,
340 struct net_device *dev,
341 struct switchdev_notifier_info *info,
342 struct netlink_ext_ack *extack)
343{
344 return NOTIFY_DONE;
345}
346
347static inline int
348register_switchdev_blocking_notifier(struct notifier_block *nb)
349{
350 return 0;
351}
352
353static inline int
354unregister_switchdev_blocking_notifier(struct notifier_block *nb)
355{
356 return 0;
357}
358
359static inline int
360call_switchdev_blocking_notifiers(unsigned long val,
361 struct net_device *dev,
362 struct switchdev_notifier_info *info,
363 struct netlink_ext_ack *extack)
364{
365 return NOTIFY_DONE;
366}
367
368static inline int
369switchdev_handle_port_obj_add(struct net_device *dev,
370 struct switchdev_notifier_port_obj_info *port_obj_info,
371 bool (*check_cb)(const struct net_device *dev),
372 int (*add_cb)(struct net_device *dev,
373 const struct switchdev_obj *obj,
374 struct switchdev_trans *trans,
375 struct netlink_ext_ack *extack))
376{
377 return 0;
378}
379
380static inline int
381switchdev_handle_port_obj_del(struct net_device *dev,
382 struct switchdev_notifier_port_obj_info *port_obj_info,
383 bool (*check_cb)(const struct net_device *dev),
384 int (*del_cb)(struct net_device *dev,
385 const struct switchdev_obj *obj))
386{
387 return 0;
388}
389
390static inline int
391switchdev_handle_port_attr_set(struct net_device *dev,
392 struct switchdev_notifier_port_attr_info *port_attr_info,
393 bool (*check_cb)(const struct net_device *dev),
394 int (*set_cb)(struct net_device *dev,
395 const struct switchdev_attr *attr,
396 struct switchdev_trans *trans))
397{
398 return 0;
399}
400#endif
401
402#endif /* _LINUX_SWITCHDEV_H_ */