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2874c5fd 1/* SPDX-License-Identifier: GPL-2.0-or-later */
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2/*
3 * include/net/switchdev.h - Switch device API
7ea6eb3f 4 * Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us>
f8f21471 5 * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com>
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6 */
7#ifndef _LINUX_SWITCHDEV_H_
8#define _LINUX_SWITCHDEV_H_
9
10#include <linux/netdevice.h>
03bf0c28 11#include <linux/notifier.h>
7ea6eb3f 12#include <linux/list.h>
850d0cbc 13#include <net/ip_fib.h>
03bf0c28 14
3094333d 15#define SWITCHDEV_F_NO_RECURSE BIT(0)
464314ea 16#define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1)
0bc05d58 17#define SWITCHDEV_F_DEFER BIT(2)
3094333d 18
3094333d 19enum switchdev_attr_id {
1f868398 20 SWITCHDEV_ATTR_ID_UNDEFINED,
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21 SWITCHDEV_ATTR_ID_PORT_STP_STATE,
22 SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
746dc184 23 SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS,
6d549648 24 SWITCHDEV_ATTR_ID_PORT_MROUTER,
f55ac58a 25 SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
81435c33 26 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
22ec19f3 27 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL,
147c1e9b 28 SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
77041420 29 SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
c284b545 30 SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
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31};
32
e18f4c18
VO
33struct switchdev_brport_flags {
34 unsigned long val;
35 unsigned long mask;
36};
37
3094333d 38struct switchdev_attr {
6ff64f6f 39 struct net_device *orig_dev;
3094333d 40 enum switchdev_attr_id id;
3094333d 41 u32 flags;
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42 void *complete_priv;
43 void (*complete)(struct net_device *dev, int err, void *priv);
f8e20a9f 44 union {
35636062 45 u8 stp_state; /* PORT_STP_STATE */
e18f4c18 46 struct switchdev_brport_flags brport_flags; /* PORT_BRIDGE_FLAGS */
6d549648 47 bool mrouter; /* PORT_MROUTER */
eabfdda9 48 clock_t ageing_time; /* BRIDGE_AGEING_TIME */
81435c33 49 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
22ec19f3 50 u16 vlan_protocol; /* BRIDGE_VLAN_PROTOCOL */
147c1e9b 51 bool mc_disabled; /* MC_DISABLED */
c284b545 52 u8 mrp_port_role; /* MRP_PORT_ROLE */
42275bd8 53 } u;
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54};
55
491d0f15 56enum switchdev_obj_id {
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57 SWITCHDEV_OBJ_ID_UNDEFINED,
58 SWITCHDEV_OBJ_ID_PORT_VLAN,
4d41e125 59 SWITCHDEV_OBJ_ID_PORT_MDB,
47d5b6db 60 SWITCHDEV_OBJ_ID_HOST_MDB,
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61 SWITCHDEV_OBJ_ID_MRP,
62 SWITCHDEV_OBJ_ID_RING_TEST_MRP,
63 SWITCHDEV_OBJ_ID_RING_ROLE_MRP,
64 SWITCHDEV_OBJ_ID_RING_STATE_MRP,
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65 SWITCHDEV_OBJ_ID_IN_TEST_MRP,
66 SWITCHDEV_OBJ_ID_IN_ROLE_MRP,
67 SWITCHDEV_OBJ_ID_IN_STATE_MRP,
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68};
69
648b4a99 70struct switchdev_obj {
4f2673b3 71 struct list_head list;
6ff64f6f 72 struct net_device *orig_dev;
9e8f4a54 73 enum switchdev_obj_id id;
4d429c5d 74 u32 flags;
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75 void *complete_priv;
76 void (*complete)(struct net_device *dev, int err, void *priv);
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77};
78
57d80838 79/* SWITCHDEV_OBJ_ID_PORT_VLAN */
8f24f309 80struct switchdev_obj_port_vlan {
648b4a99 81 struct switchdev_obj obj;
44bbcf5c 82 u16 flags;
b7a9e0da 83 u16 vid;
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84};
85
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86#define SWITCHDEV_OBJ_PORT_VLAN(OBJ) \
87 container_of((OBJ), struct switchdev_obj_port_vlan, obj)
648b4a99 88
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89/* SWITCHDEV_OBJ_ID_PORT_MDB */
90struct switchdev_obj_port_mdb {
91 struct switchdev_obj obj;
92 unsigned char addr[ETH_ALEN];
93 u16 vid;
94};
95
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96#define SWITCHDEV_OBJ_PORT_MDB(OBJ) \
97 container_of((OBJ), struct switchdev_obj_port_mdb, obj)
4d41e125 98
c284b545 99
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100/* SWITCHDEV_OBJ_ID_MRP */
101struct switchdev_obj_mrp {
102 struct switchdev_obj obj;
103 struct net_device *p_port;
104 struct net_device *s_port;
105 u32 ring_id;
4b3a61b0 106 u16 prio;
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107};
108
109#define SWITCHDEV_OBJ_MRP(OBJ) \
110 container_of((OBJ), struct switchdev_obj_mrp, obj)
111
112/* SWITCHDEV_OBJ_ID_RING_TEST_MRP */
113struct switchdev_obj_ring_test_mrp {
114 struct switchdev_obj obj;
115 /* The value is in us and a value of 0 represents to stop */
116 u32 interval;
117 u8 max_miss;
118 u32 ring_id;
119 u32 period;
c6676e7d 120 bool monitor;
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121};
122
123#define SWITCHDEV_OBJ_RING_TEST_MRP(OBJ) \
124 container_of((OBJ), struct switchdev_obj_ring_test_mrp, obj)
125
126/* SWICHDEV_OBJ_ID_RING_ROLE_MRP */
127struct switchdev_obj_ring_role_mrp {
128 struct switchdev_obj obj;
129 u8 ring_role;
130 u32 ring_id;
c513efa2 131 u8 sw_backup;
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132};
133
134#define SWITCHDEV_OBJ_RING_ROLE_MRP(OBJ) \
135 container_of((OBJ), struct switchdev_obj_ring_role_mrp, obj)
136
137struct switchdev_obj_ring_state_mrp {
138 struct switchdev_obj obj;
139 u8 ring_state;
140 u32 ring_id;
141};
142
143#define SWITCHDEV_OBJ_RING_STATE_MRP(OBJ) \
144 container_of((OBJ), struct switchdev_obj_ring_state_mrp, obj)
145
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146/* SWITCHDEV_OBJ_ID_IN_TEST_MRP */
147struct switchdev_obj_in_test_mrp {
148 struct switchdev_obj obj;
149 /* The value is in us and a value of 0 represents to stop */
150 u32 interval;
151 u32 in_id;
152 u32 period;
153 u8 max_miss;
154};
155
156#define SWITCHDEV_OBJ_IN_TEST_MRP(OBJ) \
157 container_of((OBJ), struct switchdev_obj_in_test_mrp, obj)
158
159/* SWICHDEV_OBJ_ID_IN_ROLE_MRP */
160struct switchdev_obj_in_role_mrp {
161 struct switchdev_obj obj;
162 struct net_device *i_port;
163 u32 ring_id;
164 u16 in_id;
165 u8 in_role;
c513efa2 166 u8 sw_backup;
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167};
168
169#define SWITCHDEV_OBJ_IN_ROLE_MRP(OBJ) \
170 container_of((OBJ), struct switchdev_obj_in_role_mrp, obj)
171
172struct switchdev_obj_in_state_mrp {
173 struct switchdev_obj obj;
174 u32 in_id;
175 u8 in_state;
176};
177
178#define SWITCHDEV_OBJ_IN_STATE_MRP(OBJ) \
179 container_of((OBJ), struct switchdev_obj_in_state_mrp, obj)
180
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181typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
182
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183struct switchdev_brport {
184 struct net_device *dev;
185 const void *ctx;
186 struct notifier_block *atomic_nb;
187 struct notifier_block *blocking_nb;
188 bool tx_fwd_offload;
189};
190
ebb9a03a 191enum switchdev_notifier_type {
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192 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
193 SWITCHDEV_FDB_DEL_TO_BRIDGE,
194 SWITCHDEV_FDB_ADD_TO_DEVICE,
195 SWITCHDEV_FDB_DEL_TO_DEVICE,
9fe8bcec 196 SWITCHDEV_FDB_OFFLOADED,
d05e8e68 197 SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
9a997353 198
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199 SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
200 SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */
1cb33af1 201 SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */
aa4efe21 202
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203 SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE,
204 SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE,
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205 SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE,
206 SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE,
0efe1173 207 SWITCHDEV_VXLAN_FDB_OFFLOADED,
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208
209 SWITCHDEV_BRPORT_OFFLOADED,
210 SWITCHDEV_BRPORT_UNOFFLOADED,
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211};
212
ebb9a03a 213struct switchdev_notifier_info {
03bf0c28 214 struct net_device *dev;
479c86dc 215 struct netlink_ext_ack *extack;
69bfac96 216 const void *ctx;
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217};
218
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219struct switchdev_notifier_fdb_info {
220 struct switchdev_notifier_info info; /* must be first */
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221 const unsigned char *addr;
222 u16 vid;
e9ba0fbc 223 u8 added_by_user:1,
2c4eca3e 224 is_local:1,
e9ba0fbc 225 offloaded:1;
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226};
227
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228struct switchdev_notifier_port_obj_info {
229 struct switchdev_notifier_info info; /* must be first */
230 const struct switchdev_obj *obj;
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231 bool handled;
232};
233
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234struct switchdev_notifier_port_attr_info {
235 struct switchdev_notifier_info info; /* must be first */
236 const struct switchdev_attr *attr;
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237 bool handled;
238};
239
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240struct switchdev_notifier_brport_info {
241 struct switchdev_notifier_info info; /* must be first */
242 const struct switchdev_brport brport;
243};
244
03bf0c28 245static inline struct net_device *
ebb9a03a 246switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
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247{
248 return info->dev;
249}
007f790c 250
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251static inline struct netlink_ext_ack *
252switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info)
253{
254 return info->extack;
255}
256
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257static inline bool
258switchdev_fdb_is_dynamically_learned(const struct switchdev_notifier_fdb_info *fdb_info)
259{
260 return !fdb_info->added_by_user && !fdb_info->is_local;
261}
262
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263#ifdef CONFIG_NET_SWITCHDEV
264
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265int switchdev_bridge_port_offload(struct net_device *brport_dev,
266 struct net_device *dev, const void *ctx,
267 struct notifier_block *atomic_nb,
268 struct notifier_block *blocking_nb,
269 bool tx_fwd_offload,
270 struct netlink_ext_ack *extack);
271void switchdev_bridge_port_unoffload(struct net_device *brport_dev,
272 const void *ctx,
273 struct notifier_block *atomic_nb,
274 struct notifier_block *blocking_nb);
275
793f4014 276void switchdev_deferred_process(void);
3094333d 277int switchdev_port_attr_set(struct net_device *dev,
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278 const struct switchdev_attr *attr,
279 struct netlink_ext_ack *extack);
9e8f4a54 280int switchdev_port_obj_add(struct net_device *dev,
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281 const struct switchdev_obj *obj,
282 struct netlink_ext_ack *extack);
9e8f4a54 283int switchdev_port_obj_del(struct net_device *dev,
648b4a99 284 const struct switchdev_obj *obj);
a93e3b17 285
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286int register_switchdev_notifier(struct notifier_block *nb);
287int unregister_switchdev_notifier(struct notifier_block *nb);
288int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
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289 struct switchdev_notifier_info *info,
290 struct netlink_ext_ack *extack);
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291
292int register_switchdev_blocking_notifier(struct notifier_block *nb);
293int unregister_switchdev_blocking_notifier(struct notifier_block *nb);
294int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
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295 struct switchdev_notifier_info *info,
296 struct netlink_ext_ack *extack);
a93e3b17 297
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298void switchdev_port_fwd_mark_set(struct net_device *dev,
299 struct net_device *group_dev,
300 bool joining);
5e8d9049 301
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302int switchdev_handle_fdb_add_to_device(struct net_device *dev,
303 const struct switchdev_notifier_fdb_info *fdb_info,
304 bool (*check_cb)(const struct net_device *dev),
305 bool (*foreign_dev_check_cb)(const struct net_device *dev,
306 const struct net_device *foreign_dev),
307 int (*add_cb)(struct net_device *dev,
308 const struct net_device *orig_dev, const void *ctx,
309 const struct switchdev_notifier_fdb_info *fdb_info),
310 int (*lag_add_cb)(struct net_device *dev,
311 const struct net_device *orig_dev, const void *ctx,
312 const struct switchdev_notifier_fdb_info *fdb_info));
313
314int switchdev_handle_fdb_del_to_device(struct net_device *dev,
315 const struct switchdev_notifier_fdb_info *fdb_info,
316 bool (*check_cb)(const struct net_device *dev),
317 bool (*foreign_dev_check_cb)(const struct net_device *dev,
318 const struct net_device *foreign_dev),
319 int (*del_cb)(struct net_device *dev,
320 const struct net_device *orig_dev, const void *ctx,
321 const struct switchdev_notifier_fdb_info *fdb_info),
322 int (*lag_del_cb)(struct net_device *dev,
323 const struct net_device *orig_dev, const void *ctx,
324 const struct switchdev_notifier_fdb_info *fdb_info));
325
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326int switchdev_handle_port_obj_add(struct net_device *dev,
327 struct switchdev_notifier_port_obj_info *port_obj_info,
328 bool (*check_cb)(const struct net_device *dev),
69bfac96 329 int (*add_cb)(struct net_device *dev, const void *ctx,
f30f0601 330 const struct switchdev_obj *obj,
69213513 331 struct netlink_ext_ack *extack));
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332int switchdev_handle_port_obj_del(struct net_device *dev,
333 struct switchdev_notifier_port_obj_info *port_obj_info,
334 bool (*check_cb)(const struct net_device *dev),
69bfac96 335 int (*del_cb)(struct net_device *dev, const void *ctx,
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336 const struct switchdev_obj *obj));
337
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338int switchdev_handle_port_attr_set(struct net_device *dev,
339 struct switchdev_notifier_port_attr_info *port_attr_info,
340 bool (*check_cb)(const struct net_device *dev),
69bfac96 341 int (*set_cb)(struct net_device *dev, const void *ctx,
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342 const struct switchdev_attr *attr,
343 struct netlink_ext_ack *extack));
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344#else
345
957e2235
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346static inline int
347switchdev_bridge_port_offload(struct net_device *brport_dev,
348 struct net_device *dev, const void *ctx,
349 struct notifier_block *atomic_nb,
350 struct notifier_block *blocking_nb,
351 bool tx_fwd_offload,
352 struct netlink_ext_ack *extack)
353{
354 return -EOPNOTSUPP;
355}
356
357static inline void
358switchdev_bridge_port_unoffload(struct net_device *brport_dev,
359 const void *ctx,
360 struct notifier_block *atomic_nb,
361 struct notifier_block *blocking_nb)
362{
363}
364
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365static inline void switchdev_deferred_process(void)
366{
367}
368
3094333d 369static inline int switchdev_port_attr_set(struct net_device *dev,
419dfaed
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370 const struct switchdev_attr *attr,
371 struct netlink_ext_ack *extack)
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372{
373 return -EOPNOTSUPP;
374}
375
491d0f15 376static inline int switchdev_port_obj_add(struct net_device *dev,
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377 const struct switchdev_obj *obj,
378 struct netlink_ext_ack *extack)
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379{
380 return -EOPNOTSUPP;
381}
382
383static inline int switchdev_port_obj_del(struct net_device *dev,
648b4a99 384 const struct switchdev_obj *obj)
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385{
386 return -EOPNOTSUPP;
387}
388
ebb9a03a 389static inline int register_switchdev_notifier(struct notifier_block *nb)
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390{
391 return 0;
392}
393
ebb9a03a 394static inline int unregister_switchdev_notifier(struct notifier_block *nb)
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395{
396 return 0;
397}
398
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399static inline int call_switchdev_notifiers(unsigned long val,
400 struct net_device *dev,
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401 struct switchdev_notifier_info *info,
402 struct netlink_ext_ack *extack)
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403{
404 return NOTIFY_DONE;
405}
406
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407static inline int
408register_switchdev_blocking_notifier(struct notifier_block *nb)
409{
410 return 0;
411}
412
413static inline int
414unregister_switchdev_blocking_notifier(struct notifier_block *nb)
415{
416 return 0;
417}
418
419static inline int
420call_switchdev_blocking_notifiers(unsigned long val,
421 struct net_device *dev,
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422 struct switchdev_notifier_info *info,
423 struct netlink_ext_ack *extack)
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424{
425 return NOTIFY_DONE;
426}
427
f30f0601 428static inline int
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429switchdev_handle_fdb_add_to_device(struct net_device *dev,
430 const struct switchdev_notifier_fdb_info *fdb_info,
431 bool (*check_cb)(const struct net_device *dev),
432 bool (*foreign_dev_check_cb)(const struct net_device *dev,
433 const struct net_device *foreign_dev),
434 int (*add_cb)(struct net_device *dev,
435 const struct net_device *orig_dev, const void *ctx,
436 const struct switchdev_notifier_fdb_info *fdb_info),
437 int (*lag_add_cb)(struct net_device *dev,
438 const struct net_device *orig_dev, const void *ctx,
439 const struct switchdev_notifier_fdb_info *fdb_info))
440{
441 return 0;
442}
443
444static inline int
445switchdev_handle_fdb_del_to_device(struct net_device *dev,
446 const struct switchdev_notifier_fdb_info *fdb_info,
447 bool (*check_cb)(const struct net_device *dev),
448 bool (*foreign_dev_check_cb)(const struct net_device *dev,
449 const struct net_device *foreign_dev),
450 int (*del_cb)(struct net_device *dev,
451 const struct net_device *orig_dev, const void *ctx,
452 const struct switchdev_notifier_fdb_info *fdb_info),
453 int (*lag_del_cb)(struct net_device *dev,
454 const struct net_device *orig_dev, const void *ctx,
94111dfc 455 const struct switchdev_notifier_fdb_info *fdb_info))
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456{
457 return 0;
458}
459
460static inline int
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461switchdev_handle_port_obj_add(struct net_device *dev,
462 struct switchdev_notifier_port_obj_info *port_obj_info,
463 bool (*check_cb)(const struct net_device *dev),
69bfac96 464 int (*add_cb)(struct net_device *dev, const void *ctx,
f30f0601 465 const struct switchdev_obj *obj,
69213513 466 struct netlink_ext_ack *extack))
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467{
468 return 0;
469}
470
471static inline int
472switchdev_handle_port_obj_del(struct net_device *dev,
473 struct switchdev_notifier_port_obj_info *port_obj_info,
474 bool (*check_cb)(const struct net_device *dev),
69bfac96 475 int (*del_cb)(struct net_device *dev, const void *ctx,
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476 const struct switchdev_obj *obj))
477{
478 return 0;
479}
480
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481static inline int
482switchdev_handle_port_attr_set(struct net_device *dev,
483 struct switchdev_notifier_port_attr_info *port_attr_info,
484 bool (*check_cb)(const struct net_device *dev),
69bfac96 485 int (*set_cb)(struct net_device *dev, const void *ctx,
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486 const struct switchdev_attr *attr,
487 struct netlink_ext_ack *extack))
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488{
489 return 0;
490}
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491#endif
492
493#endif /* _LINUX_SWITCHDEV_H_ */