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Commit | Line | Data |
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007f790c JP |
1 | /* |
2 | * net/switchdev/switchdev.c - Switch device API | |
7ea6eb3f | 3 | * Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us> |
f8f21471 | 4 | * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com> |
007f790c JP |
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 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/types.h> | |
14 | #include <linux/init.h> | |
03bf0c28 JP |
15 | #include <linux/mutex.h> |
16 | #include <linux/notifier.h> | |
007f790c | 17 | #include <linux/netdevice.h> |
850d0cbc | 18 | #include <linux/etherdevice.h> |
47f8328b | 19 | #include <linux/if_bridge.h> |
7ea6eb3f | 20 | #include <linux/list.h> |
793f4014 | 21 | #include <linux/workqueue.h> |
87aaf2ca | 22 | #include <linux/if_vlan.h> |
4f2c6ae5 | 23 | #include <linux/rtnetlink.h> |
007f790c JP |
24 | #include <net/switchdev.h> |
25 | ||
7ea6eb3f JP |
26 | /** |
27 | * switchdev_trans_item_enqueue - Enqueue data item to transaction queue | |
28 | * | |
29 | * @trans: transaction | |
30 | * @data: pointer to data being queued | |
31 | * @destructor: data destructor | |
32 | * @tritem: transaction item being queued | |
33 | * | |
34 | * Enqeueue data item to transaction queue. tritem is typically placed in | |
35 | * cointainter pointed at by data pointer. Destructor is called on | |
36 | * transaction abort and after successful commit phase in case | |
37 | * the caller did not dequeue the item before. | |
38 | */ | |
39 | void switchdev_trans_item_enqueue(struct switchdev_trans *trans, | |
40 | void *data, void (*destructor)(void const *), | |
41 | struct switchdev_trans_item *tritem) | |
42 | { | |
43 | tritem->data = data; | |
44 | tritem->destructor = destructor; | |
45 | list_add_tail(&tritem->list, &trans->item_list); | |
46 | } | |
47 | EXPORT_SYMBOL_GPL(switchdev_trans_item_enqueue); | |
48 | ||
49 | static struct switchdev_trans_item * | |
50 | __switchdev_trans_item_dequeue(struct switchdev_trans *trans) | |
51 | { | |
52 | struct switchdev_trans_item *tritem; | |
53 | ||
54 | if (list_empty(&trans->item_list)) | |
55 | return NULL; | |
56 | tritem = list_first_entry(&trans->item_list, | |
57 | struct switchdev_trans_item, list); | |
58 | list_del(&tritem->list); | |
59 | return tritem; | |
60 | } | |
61 | ||
62 | /** | |
63 | * switchdev_trans_item_dequeue - Dequeue data item from transaction queue | |
64 | * | |
65 | * @trans: transaction | |
66 | */ | |
67 | void *switchdev_trans_item_dequeue(struct switchdev_trans *trans) | |
68 | { | |
69 | struct switchdev_trans_item *tritem; | |
70 | ||
71 | tritem = __switchdev_trans_item_dequeue(trans); | |
72 | BUG_ON(!tritem); | |
73 | return tritem->data; | |
74 | } | |
75 | EXPORT_SYMBOL_GPL(switchdev_trans_item_dequeue); | |
76 | ||
77 | static void switchdev_trans_init(struct switchdev_trans *trans) | |
78 | { | |
79 | INIT_LIST_HEAD(&trans->item_list); | |
80 | } | |
81 | ||
82 | static void switchdev_trans_items_destroy(struct switchdev_trans *trans) | |
83 | { | |
84 | struct switchdev_trans_item *tritem; | |
85 | ||
86 | while ((tritem = __switchdev_trans_item_dequeue(trans))) | |
87 | tritem->destructor(tritem->data); | |
88 | } | |
89 | ||
90 | static void switchdev_trans_items_warn_destroy(struct net_device *dev, | |
91 | struct switchdev_trans *trans) | |
92 | { | |
93 | WARN(!list_empty(&trans->item_list), "%s: transaction item queue is not empty.\n", | |
94 | dev->name); | |
95 | switchdev_trans_items_destroy(trans); | |
96 | } | |
97 | ||
793f4014 JP |
98 | static LIST_HEAD(deferred); |
99 | static DEFINE_SPINLOCK(deferred_lock); | |
100 | ||
101 | typedef void switchdev_deferred_func_t(struct net_device *dev, | |
102 | const void *data); | |
103 | ||
104 | struct switchdev_deferred_item { | |
105 | struct list_head list; | |
106 | struct net_device *dev; | |
107 | switchdev_deferred_func_t *func; | |
108 | unsigned long data[0]; | |
109 | }; | |
110 | ||
111 | static struct switchdev_deferred_item *switchdev_deferred_dequeue(void) | |
112 | { | |
113 | struct switchdev_deferred_item *dfitem; | |
114 | ||
115 | spin_lock_bh(&deferred_lock); | |
116 | if (list_empty(&deferred)) { | |
117 | dfitem = NULL; | |
118 | goto unlock; | |
119 | } | |
120 | dfitem = list_first_entry(&deferred, | |
121 | struct switchdev_deferred_item, list); | |
122 | list_del(&dfitem->list); | |
123 | unlock: | |
124 | spin_unlock_bh(&deferred_lock); | |
125 | return dfitem; | |
126 | } | |
127 | ||
128 | /** | |
129 | * switchdev_deferred_process - Process ops in deferred queue | |
130 | * | |
131 | * Called to flush the ops currently queued in deferred ops queue. | |
132 | * rtnl_lock must be held. | |
133 | */ | |
134 | void switchdev_deferred_process(void) | |
135 | { | |
136 | struct switchdev_deferred_item *dfitem; | |
137 | ||
138 | ASSERT_RTNL(); | |
139 | ||
140 | while ((dfitem = switchdev_deferred_dequeue())) { | |
141 | dfitem->func(dfitem->dev, dfitem->data); | |
142 | dev_put(dfitem->dev); | |
143 | kfree(dfitem); | |
144 | } | |
145 | } | |
146 | EXPORT_SYMBOL_GPL(switchdev_deferred_process); | |
147 | ||
148 | static void switchdev_deferred_process_work(struct work_struct *work) | |
149 | { | |
150 | rtnl_lock(); | |
151 | switchdev_deferred_process(); | |
152 | rtnl_unlock(); | |
153 | } | |
154 | ||
155 | static DECLARE_WORK(deferred_process_work, switchdev_deferred_process_work); | |
156 | ||
157 | static int switchdev_deferred_enqueue(struct net_device *dev, | |
158 | const void *data, size_t data_len, | |
159 | switchdev_deferred_func_t *func) | |
160 | { | |
161 | struct switchdev_deferred_item *dfitem; | |
162 | ||
163 | dfitem = kmalloc(sizeof(*dfitem) + data_len, GFP_ATOMIC); | |
164 | if (!dfitem) | |
165 | return -ENOMEM; | |
166 | dfitem->dev = dev; | |
167 | dfitem->func = func; | |
168 | memcpy(dfitem->data, data, data_len); | |
169 | dev_hold(dev); | |
170 | spin_lock_bh(&deferred_lock); | |
171 | list_add_tail(&dfitem->list, &deferred); | |
172 | spin_unlock_bh(&deferred_lock); | |
173 | schedule_work(&deferred_process_work); | |
174 | return 0; | |
175 | } | |
176 | ||
3094333d SF |
177 | /** |
178 | * switchdev_port_attr_get - Get port attribute | |
179 | * | |
180 | * @dev: port device | |
181 | * @attr: attribute to get | |
182 | */ | |
183 | int switchdev_port_attr_get(struct net_device *dev, struct switchdev_attr *attr) | |
184 | { | |
185 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
186 | struct net_device *lower_dev; | |
187 | struct list_head *iter; | |
188 | struct switchdev_attr first = { | |
1f868398 | 189 | .id = SWITCHDEV_ATTR_ID_UNDEFINED |
3094333d SF |
190 | }; |
191 | int err = -EOPNOTSUPP; | |
192 | ||
193 | if (ops && ops->switchdev_port_attr_get) | |
194 | return ops->switchdev_port_attr_get(dev, attr); | |
195 | ||
196 | if (attr->flags & SWITCHDEV_F_NO_RECURSE) | |
197 | return err; | |
198 | ||
199 | /* Switch device port(s) may be stacked under | |
200 | * bond/team/vlan dev, so recurse down to get attr on | |
201 | * each port. Return -ENODATA if attr values don't | |
202 | * compare across ports. | |
203 | */ | |
204 | ||
205 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
206 | err = switchdev_port_attr_get(lower_dev, attr); | |
207 | if (err) | |
208 | break; | |
1f868398 | 209 | if (first.id == SWITCHDEV_ATTR_ID_UNDEFINED) |
3094333d SF |
210 | first = *attr; |
211 | else if (memcmp(&first, attr, sizeof(*attr))) | |
212 | return -ENODATA; | |
213 | } | |
214 | ||
215 | return err; | |
216 | } | |
217 | EXPORT_SYMBOL_GPL(switchdev_port_attr_get); | |
218 | ||
219 | static int __switchdev_port_attr_set(struct net_device *dev, | |
f7fadf30 | 220 | const struct switchdev_attr *attr, |
7ea6eb3f | 221 | struct switchdev_trans *trans) |
3094333d SF |
222 | { |
223 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
224 | struct net_device *lower_dev; | |
225 | struct list_head *iter; | |
226 | int err = -EOPNOTSUPP; | |
227 | ||
0c63d80c JP |
228 | if (ops && ops->switchdev_port_attr_set) { |
229 | err = ops->switchdev_port_attr_set(dev, attr, trans); | |
230 | goto done; | |
231 | } | |
3094333d SF |
232 | |
233 | if (attr->flags & SWITCHDEV_F_NO_RECURSE) | |
464314ea | 234 | goto done; |
3094333d SF |
235 | |
236 | /* Switch device port(s) may be stacked under | |
237 | * bond/team/vlan dev, so recurse down to set attr on | |
238 | * each port. | |
239 | */ | |
240 | ||
241 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
7ea6eb3f | 242 | err = __switchdev_port_attr_set(lower_dev, attr, trans); |
3094333d SF |
243 | if (err) |
244 | break; | |
245 | } | |
246 | ||
464314ea SF |
247 | done: |
248 | if (err == -EOPNOTSUPP && attr->flags & SWITCHDEV_F_SKIP_EOPNOTSUPP) | |
249 | err = 0; | |
250 | ||
3094333d SF |
251 | return err; |
252 | } | |
253 | ||
0bc05d58 JP |
254 | static int switchdev_port_attr_set_now(struct net_device *dev, |
255 | const struct switchdev_attr *attr) | |
3094333d | 256 | { |
7ea6eb3f | 257 | struct switchdev_trans trans; |
3094333d SF |
258 | int err; |
259 | ||
7ea6eb3f JP |
260 | switchdev_trans_init(&trans); |
261 | ||
3094333d SF |
262 | /* Phase I: prepare for attr set. Driver/device should fail |
263 | * here if there are going to be issues in the commit phase, | |
264 | * such as lack of resources or support. The driver/device | |
265 | * should reserve resources needed for the commit phase here, | |
266 | * but should not commit the attr. | |
267 | */ | |
268 | ||
f623ab7f | 269 | trans.ph_prepare = true; |
7ea6eb3f | 270 | err = __switchdev_port_attr_set(dev, attr, &trans); |
3094333d SF |
271 | if (err) { |
272 | /* Prepare phase failed: abort the transaction. Any | |
273 | * resources reserved in the prepare phase are | |
274 | * released. | |
275 | */ | |
276 | ||
9f6467cf | 277 | if (err != -EOPNOTSUPP) |
7ea6eb3f | 278 | switchdev_trans_items_destroy(&trans); |
3094333d SF |
279 | |
280 | return err; | |
281 | } | |
282 | ||
283 | /* Phase II: commit attr set. This cannot fail as a fault | |
284 | * of driver/device. If it does, it's a bug in the driver/device | |
285 | * because the driver said everythings was OK in phase I. | |
286 | */ | |
287 | ||
f623ab7f | 288 | trans.ph_prepare = false; |
7ea6eb3f | 289 | err = __switchdev_port_attr_set(dev, attr, &trans); |
e9fdaec0 SF |
290 | WARN(err, "%s: Commit of attribute (id=%d) failed.\n", |
291 | dev->name, attr->id); | |
7ea6eb3f | 292 | switchdev_trans_items_warn_destroy(dev, &trans); |
3094333d SF |
293 | |
294 | return err; | |
295 | } | |
0bc05d58 JP |
296 | |
297 | static void switchdev_port_attr_set_deferred(struct net_device *dev, | |
298 | const void *data) | |
299 | { | |
300 | const struct switchdev_attr *attr = data; | |
301 | int err; | |
302 | ||
303 | err = switchdev_port_attr_set_now(dev, attr); | |
304 | if (err && err != -EOPNOTSUPP) | |
305 | netdev_err(dev, "failed (err=%d) to set attribute (id=%d)\n", | |
306 | err, attr->id); | |
7ceb2afb ER |
307 | if (attr->complete) |
308 | attr->complete(dev, err, attr->complete_priv); | |
0bc05d58 JP |
309 | } |
310 | ||
311 | static int switchdev_port_attr_set_defer(struct net_device *dev, | |
312 | const struct switchdev_attr *attr) | |
313 | { | |
314 | return switchdev_deferred_enqueue(dev, attr, sizeof(*attr), | |
315 | switchdev_port_attr_set_deferred); | |
316 | } | |
317 | ||
318 | /** | |
319 | * switchdev_port_attr_set - Set port attribute | |
320 | * | |
321 | * @dev: port device | |
322 | * @attr: attribute to set | |
323 | * | |
324 | * Use a 2-phase prepare-commit transaction model to ensure | |
325 | * system is not left in a partially updated state due to | |
326 | * failure from driver/device. | |
327 | * | |
328 | * rtnl_lock must be held and must not be in atomic section, | |
329 | * in case SWITCHDEV_F_DEFER flag is not set. | |
330 | */ | |
331 | int switchdev_port_attr_set(struct net_device *dev, | |
332 | const struct switchdev_attr *attr) | |
333 | { | |
334 | if (attr->flags & SWITCHDEV_F_DEFER) | |
335 | return switchdev_port_attr_set_defer(dev, attr); | |
336 | ASSERT_RTNL(); | |
337 | return switchdev_port_attr_set_now(dev, attr); | |
338 | } | |
3094333d SF |
339 | EXPORT_SYMBOL_GPL(switchdev_port_attr_set); |
340 | ||
e258d919 SF |
341 | static size_t switchdev_obj_size(const struct switchdev_obj *obj) |
342 | { | |
343 | switch (obj->id) { | |
344 | case SWITCHDEV_OBJ_ID_PORT_VLAN: | |
345 | return sizeof(struct switchdev_obj_port_vlan); | |
e258d919 SF |
346 | case SWITCHDEV_OBJ_ID_PORT_FDB: |
347 | return sizeof(struct switchdev_obj_port_fdb); | |
4d41e125 ER |
348 | case SWITCHDEV_OBJ_ID_PORT_MDB: |
349 | return sizeof(struct switchdev_obj_port_mdb); | |
e258d919 SF |
350 | default: |
351 | BUG(); | |
352 | } | |
353 | return 0; | |
354 | } | |
355 | ||
22c1f67e | 356 | static int __switchdev_port_obj_add(struct net_device *dev, |
648b4a99 | 357 | const struct switchdev_obj *obj, |
7ea6eb3f | 358 | struct switchdev_trans *trans) |
491d0f15 SF |
359 | { |
360 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
361 | struct net_device *lower_dev; | |
362 | struct list_head *iter; | |
363 | int err = -EOPNOTSUPP; | |
364 | ||
365 | if (ops && ops->switchdev_port_obj_add) | |
9e8f4a54 | 366 | return ops->switchdev_port_obj_add(dev, obj, trans); |
491d0f15 SF |
367 | |
368 | /* Switch device port(s) may be stacked under | |
369 | * bond/team/vlan dev, so recurse down to add object on | |
370 | * each port. | |
371 | */ | |
372 | ||
373 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
9e8f4a54 | 374 | err = __switchdev_port_obj_add(lower_dev, obj, trans); |
491d0f15 SF |
375 | if (err) |
376 | break; | |
377 | } | |
378 | ||
379 | return err; | |
380 | } | |
381 | ||
4d429c5d JP |
382 | static int switchdev_port_obj_add_now(struct net_device *dev, |
383 | const struct switchdev_obj *obj) | |
491d0f15 | 384 | { |
7ea6eb3f | 385 | struct switchdev_trans trans; |
491d0f15 SF |
386 | int err; |
387 | ||
388 | ASSERT_RTNL(); | |
389 | ||
7ea6eb3f JP |
390 | switchdev_trans_init(&trans); |
391 | ||
491d0f15 SF |
392 | /* Phase I: prepare for obj add. Driver/device should fail |
393 | * here if there are going to be issues in the commit phase, | |
394 | * such as lack of resources or support. The driver/device | |
395 | * should reserve resources needed for the commit phase here, | |
396 | * but should not commit the obj. | |
397 | */ | |
398 | ||
f623ab7f | 399 | trans.ph_prepare = true; |
9e8f4a54 | 400 | err = __switchdev_port_obj_add(dev, obj, &trans); |
491d0f15 SF |
401 | if (err) { |
402 | /* Prepare phase failed: abort the transaction. Any | |
403 | * resources reserved in the prepare phase are | |
404 | * released. | |
405 | */ | |
406 | ||
9f6467cf | 407 | if (err != -EOPNOTSUPP) |
7ea6eb3f | 408 | switchdev_trans_items_destroy(&trans); |
491d0f15 SF |
409 | |
410 | return err; | |
411 | } | |
412 | ||
413 | /* Phase II: commit obj add. This cannot fail as a fault | |
414 | * of driver/device. If it does, it's a bug in the driver/device | |
415 | * because the driver said everythings was OK in phase I. | |
416 | */ | |
417 | ||
f623ab7f | 418 | trans.ph_prepare = false; |
9e8f4a54 JP |
419 | err = __switchdev_port_obj_add(dev, obj, &trans); |
420 | WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, obj->id); | |
7ea6eb3f | 421 | switchdev_trans_items_warn_destroy(dev, &trans); |
491d0f15 SF |
422 | |
423 | return err; | |
424 | } | |
4d429c5d JP |
425 | |
426 | static void switchdev_port_obj_add_deferred(struct net_device *dev, | |
427 | const void *data) | |
428 | { | |
429 | const struct switchdev_obj *obj = data; | |
430 | int err; | |
431 | ||
432 | err = switchdev_port_obj_add_now(dev, obj); | |
433 | if (err && err != -EOPNOTSUPP) | |
434 | netdev_err(dev, "failed (err=%d) to add object (id=%d)\n", | |
435 | err, obj->id); | |
7ceb2afb ER |
436 | if (obj->complete) |
437 | obj->complete(dev, err, obj->complete_priv); | |
4d429c5d JP |
438 | } |
439 | ||
440 | static int switchdev_port_obj_add_defer(struct net_device *dev, | |
441 | const struct switchdev_obj *obj) | |
442 | { | |
e258d919 | 443 | return switchdev_deferred_enqueue(dev, obj, switchdev_obj_size(obj), |
4d429c5d JP |
444 | switchdev_port_obj_add_deferred); |
445 | } | |
491d0f15 SF |
446 | |
447 | /** | |
4d429c5d | 448 | * switchdev_port_obj_add - Add port object |
491d0f15 SF |
449 | * |
450 | * @dev: port device | |
ab069002 | 451 | * @id: object ID |
4d429c5d JP |
452 | * @obj: object to add |
453 | * | |
454 | * Use a 2-phase prepare-commit transaction model to ensure | |
455 | * system is not left in a partially updated state due to | |
456 | * failure from driver/device. | |
457 | * | |
458 | * rtnl_lock must be held and must not be in atomic section, | |
459 | * in case SWITCHDEV_F_DEFER flag is not set. | |
491d0f15 | 460 | */ |
4d429c5d | 461 | int switchdev_port_obj_add(struct net_device *dev, |
648b4a99 | 462 | const struct switchdev_obj *obj) |
4d429c5d JP |
463 | { |
464 | if (obj->flags & SWITCHDEV_F_DEFER) | |
465 | return switchdev_port_obj_add_defer(dev, obj); | |
466 | ASSERT_RTNL(); | |
467 | return switchdev_port_obj_add_now(dev, obj); | |
468 | } | |
469 | EXPORT_SYMBOL_GPL(switchdev_port_obj_add); | |
470 | ||
471 | static int switchdev_port_obj_del_now(struct net_device *dev, | |
472 | const struct switchdev_obj *obj) | |
491d0f15 SF |
473 | { |
474 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
475 | struct net_device *lower_dev; | |
476 | struct list_head *iter; | |
477 | int err = -EOPNOTSUPP; | |
478 | ||
479 | if (ops && ops->switchdev_port_obj_del) | |
9e8f4a54 | 480 | return ops->switchdev_port_obj_del(dev, obj); |
491d0f15 SF |
481 | |
482 | /* Switch device port(s) may be stacked under | |
483 | * bond/team/vlan dev, so recurse down to delete object on | |
484 | * each port. | |
485 | */ | |
486 | ||
487 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
4d429c5d | 488 | err = switchdev_port_obj_del_now(lower_dev, obj); |
491d0f15 SF |
489 | if (err) |
490 | break; | |
491 | } | |
492 | ||
493 | return err; | |
494 | } | |
4d429c5d JP |
495 | |
496 | static void switchdev_port_obj_del_deferred(struct net_device *dev, | |
497 | const void *data) | |
498 | { | |
499 | const struct switchdev_obj *obj = data; | |
500 | int err; | |
501 | ||
502 | err = switchdev_port_obj_del_now(dev, obj); | |
503 | if (err && err != -EOPNOTSUPP) | |
504 | netdev_err(dev, "failed (err=%d) to del object (id=%d)\n", | |
505 | err, obj->id); | |
7ceb2afb ER |
506 | if (obj->complete) |
507 | obj->complete(dev, err, obj->complete_priv); | |
4d429c5d JP |
508 | } |
509 | ||
510 | static int switchdev_port_obj_del_defer(struct net_device *dev, | |
511 | const struct switchdev_obj *obj) | |
512 | { | |
e258d919 | 513 | return switchdev_deferred_enqueue(dev, obj, switchdev_obj_size(obj), |
4d429c5d JP |
514 | switchdev_port_obj_del_deferred); |
515 | } | |
516 | ||
517 | /** | |
518 | * switchdev_port_obj_del - Delete port object | |
519 | * | |
520 | * @dev: port device | |
521 | * @id: object ID | |
522 | * @obj: object to delete | |
523 | * | |
524 | * rtnl_lock must be held and must not be in atomic section, | |
525 | * in case SWITCHDEV_F_DEFER flag is not set. | |
526 | */ | |
527 | int switchdev_port_obj_del(struct net_device *dev, | |
528 | const struct switchdev_obj *obj) | |
529 | { | |
530 | if (obj->flags & SWITCHDEV_F_DEFER) | |
531 | return switchdev_port_obj_del_defer(dev, obj); | |
532 | ASSERT_RTNL(); | |
533 | return switchdev_port_obj_del_now(dev, obj); | |
534 | } | |
491d0f15 SF |
535 | EXPORT_SYMBOL_GPL(switchdev_port_obj_del); |
536 | ||
45d4122c SS |
537 | /** |
538 | * switchdev_port_obj_dump - Dump port objects | |
539 | * | |
540 | * @dev: port device | |
25f07adc | 541 | * @id: object ID |
45d4122c | 542 | * @obj: object to dump |
25f07adc | 543 | * @cb: function to call with a filled object |
771acac2 JP |
544 | * |
545 | * rtnl_lock must be held. | |
45d4122c | 546 | */ |
9e8f4a54 | 547 | int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj, |
648b4a99 | 548 | switchdev_obj_dump_cb_t *cb) |
45d4122c SS |
549 | { |
550 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
551 | struct net_device *lower_dev; | |
552 | struct list_head *iter; | |
553 | int err = -EOPNOTSUPP; | |
554 | ||
771acac2 JP |
555 | ASSERT_RTNL(); |
556 | ||
45d4122c | 557 | if (ops && ops->switchdev_port_obj_dump) |
9e8f4a54 | 558 | return ops->switchdev_port_obj_dump(dev, obj, cb); |
45d4122c SS |
559 | |
560 | /* Switch device port(s) may be stacked under | |
561 | * bond/team/vlan dev, so recurse down to dump objects on | |
562 | * first port at bottom of stack. | |
563 | */ | |
564 | ||
565 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
9e8f4a54 | 566 | err = switchdev_port_obj_dump(lower_dev, obj, cb); |
45d4122c SS |
567 | break; |
568 | } | |
569 | ||
570 | return err; | |
571 | } | |
572 | EXPORT_SYMBOL_GPL(switchdev_port_obj_dump); | |
573 | ||
ebb9a03a | 574 | static RAW_NOTIFIER_HEAD(switchdev_notif_chain); |
03bf0c28 JP |
575 | |
576 | /** | |
ebb9a03a | 577 | * register_switchdev_notifier - Register notifier |
03bf0c28 JP |
578 | * @nb: notifier_block |
579 | * | |
580 | * Register switch device notifier. This should be used by code | |
581 | * which needs to monitor events happening in particular device. | |
582 | * Return values are same as for atomic_notifier_chain_register(). | |
583 | */ | |
ebb9a03a | 584 | int register_switchdev_notifier(struct notifier_block *nb) |
03bf0c28 JP |
585 | { |
586 | int err; | |
587 | ||
4f2c6ae5 | 588 | rtnl_lock(); |
ebb9a03a | 589 | err = raw_notifier_chain_register(&switchdev_notif_chain, nb); |
4f2c6ae5 | 590 | rtnl_unlock(); |
03bf0c28 JP |
591 | return err; |
592 | } | |
ebb9a03a | 593 | EXPORT_SYMBOL_GPL(register_switchdev_notifier); |
03bf0c28 JP |
594 | |
595 | /** | |
ebb9a03a | 596 | * unregister_switchdev_notifier - Unregister notifier |
03bf0c28 JP |
597 | * @nb: notifier_block |
598 | * | |
599 | * Unregister switch device notifier. | |
600 | * Return values are same as for atomic_notifier_chain_unregister(). | |
601 | */ | |
ebb9a03a | 602 | int unregister_switchdev_notifier(struct notifier_block *nb) |
03bf0c28 JP |
603 | { |
604 | int err; | |
605 | ||
4f2c6ae5 | 606 | rtnl_lock(); |
ebb9a03a | 607 | err = raw_notifier_chain_unregister(&switchdev_notif_chain, nb); |
4f2c6ae5 | 608 | rtnl_unlock(); |
03bf0c28 JP |
609 | return err; |
610 | } | |
ebb9a03a | 611 | EXPORT_SYMBOL_GPL(unregister_switchdev_notifier); |
03bf0c28 JP |
612 | |
613 | /** | |
ebb9a03a | 614 | * call_switchdev_notifiers - Call notifiers |
03bf0c28 JP |
615 | * @val: value passed unmodified to notifier function |
616 | * @dev: port device | |
617 | * @info: notifier information data | |
618 | * | |
619 | * Call all network notifier blocks. This should be called by driver | |
620 | * when it needs to propagate hardware event. | |
621 | * Return values are same as for atomic_notifier_call_chain(). | |
4f2c6ae5 | 622 | * rtnl_lock must be held. |
03bf0c28 | 623 | */ |
ebb9a03a JP |
624 | int call_switchdev_notifiers(unsigned long val, struct net_device *dev, |
625 | struct switchdev_notifier_info *info) | |
03bf0c28 JP |
626 | { |
627 | int err; | |
628 | ||
4f2c6ae5 IS |
629 | ASSERT_RTNL(); |
630 | ||
03bf0c28 | 631 | info->dev = dev; |
ebb9a03a | 632 | err = raw_notifier_call_chain(&switchdev_notif_chain, val, info); |
03bf0c28 JP |
633 | return err; |
634 | } | |
ebb9a03a | 635 | EXPORT_SYMBOL_GPL(call_switchdev_notifiers); |
8a44dbb2 | 636 | |
7d4f8d87 | 637 | struct switchdev_vlan_dump { |
8f24f309 | 638 | struct switchdev_obj_port_vlan vlan; |
7d4f8d87 SF |
639 | struct sk_buff *skb; |
640 | u32 filter_mask; | |
641 | u16 flags; | |
642 | u16 begin; | |
643 | u16 end; | |
644 | }; | |
645 | ||
e23b002b | 646 | static int switchdev_port_vlan_dump_put(struct switchdev_vlan_dump *dump) |
7d4f8d87 SF |
647 | { |
648 | struct bridge_vlan_info vinfo; | |
649 | ||
650 | vinfo.flags = dump->flags; | |
651 | ||
652 | if (dump->begin == 0 && dump->end == 0) { | |
653 | return 0; | |
654 | } else if (dump->begin == dump->end) { | |
655 | vinfo.vid = dump->begin; | |
656 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
657 | sizeof(vinfo), &vinfo)) | |
658 | return -EMSGSIZE; | |
659 | } else { | |
660 | vinfo.vid = dump->begin; | |
661 | vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
662 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
663 | sizeof(vinfo), &vinfo)) | |
664 | return -EMSGSIZE; | |
665 | vinfo.vid = dump->end; | |
666 | vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
667 | vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_END; | |
668 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
669 | sizeof(vinfo), &vinfo)) | |
670 | return -EMSGSIZE; | |
671 | } | |
672 | ||
673 | return 0; | |
674 | } | |
675 | ||
648b4a99 | 676 | static int switchdev_port_vlan_dump_cb(struct switchdev_obj *obj) |
7d4f8d87 | 677 | { |
648b4a99 | 678 | struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); |
7d4f8d87 | 679 | struct switchdev_vlan_dump *dump = |
25f07adc | 680 | container_of(vlan, struct switchdev_vlan_dump, vlan); |
7d4f8d87 SF |
681 | int err = 0; |
682 | ||
683 | if (vlan->vid_begin > vlan->vid_end) | |
684 | return -EINVAL; | |
685 | ||
686 | if (dump->filter_mask & RTEXT_FILTER_BRVLAN) { | |
687 | dump->flags = vlan->flags; | |
688 | for (dump->begin = dump->end = vlan->vid_begin; | |
689 | dump->begin <= vlan->vid_end; | |
690 | dump->begin++, dump->end++) { | |
e23b002b | 691 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
692 | if (err) |
693 | return err; | |
694 | } | |
695 | } else if (dump->filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) { | |
696 | if (dump->begin > vlan->vid_begin && | |
697 | dump->begin >= vlan->vid_end) { | |
698 | if ((dump->begin - 1) == vlan->vid_end && | |
699 | dump->flags == vlan->flags) { | |
700 | /* prepend */ | |
701 | dump->begin = vlan->vid_begin; | |
702 | } else { | |
e23b002b | 703 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
704 | dump->flags = vlan->flags; |
705 | dump->begin = vlan->vid_begin; | |
706 | dump->end = vlan->vid_end; | |
707 | } | |
708 | } else if (dump->end <= vlan->vid_begin && | |
709 | dump->end < vlan->vid_end) { | |
710 | if ((dump->end + 1) == vlan->vid_begin && | |
711 | dump->flags == vlan->flags) { | |
712 | /* append */ | |
713 | dump->end = vlan->vid_end; | |
714 | } else { | |
e23b002b | 715 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
716 | dump->flags = vlan->flags; |
717 | dump->begin = vlan->vid_begin; | |
718 | dump->end = vlan->vid_end; | |
719 | } | |
720 | } else { | |
721 | err = -EINVAL; | |
722 | } | |
723 | } | |
724 | ||
725 | return err; | |
726 | } | |
727 | ||
728 | static int switchdev_port_vlan_fill(struct sk_buff *skb, struct net_device *dev, | |
729 | u32 filter_mask) | |
730 | { | |
731 | struct switchdev_vlan_dump dump = { | |
6ff64f6f | 732 | .vlan.obj.orig_dev = dev, |
9e8f4a54 | 733 | .vlan.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
7d4f8d87 SF |
734 | .skb = skb, |
735 | .filter_mask = filter_mask, | |
736 | }; | |
737 | int err = 0; | |
738 | ||
739 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || | |
740 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { | |
9e8f4a54 | 741 | err = switchdev_port_obj_dump(dev, &dump.vlan.obj, |
25f07adc | 742 | switchdev_port_vlan_dump_cb); |
7d4f8d87 SF |
743 | if (err) |
744 | goto err_out; | |
745 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) | |
746 | /* last one */ | |
e23b002b | 747 | err = switchdev_port_vlan_dump_put(&dump); |
7d4f8d87 SF |
748 | } |
749 | ||
750 | err_out: | |
751 | return err == -EOPNOTSUPP ? 0 : err; | |
752 | } | |
753 | ||
8793d0a6 SF |
754 | /** |
755 | * switchdev_port_bridge_getlink - Get bridge port attributes | |
756 | * | |
757 | * @dev: port device | |
758 | * | |
759 | * Called for SELF on rtnl_bridge_getlink to get bridge port | |
760 | * attributes. | |
761 | */ | |
762 | int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, | |
763 | struct net_device *dev, u32 filter_mask, | |
764 | int nlflags) | |
765 | { | |
766 | struct switchdev_attr attr = { | |
6ff64f6f | 767 | .orig_dev = dev, |
1f868398 | 768 | .id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, |
8793d0a6 SF |
769 | }; |
770 | u16 mode = BRIDGE_MODE_UNDEF; | |
741af005 | 771 | u32 mask = BR_LEARNING | BR_LEARNING_SYNC | BR_FLOOD; |
8793d0a6 SF |
772 | int err; |
773 | ||
774 | err = switchdev_port_attr_get(dev, &attr); | |
5c8079d0 | 775 | if (err && err != -EOPNOTSUPP) |
8793d0a6 SF |
776 | return err; |
777 | ||
778 | return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, | |
7d4f8d87 SF |
779 | attr.u.brport_flags, mask, nlflags, |
780 | filter_mask, switchdev_port_vlan_fill); | |
8793d0a6 SF |
781 | } |
782 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_getlink); | |
783 | ||
47f8328b SF |
784 | static int switchdev_port_br_setflag(struct net_device *dev, |
785 | struct nlattr *nlattr, | |
786 | unsigned long brport_flag) | |
787 | { | |
788 | struct switchdev_attr attr = { | |
6ff64f6f | 789 | .orig_dev = dev, |
1f868398 | 790 | .id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, |
47f8328b SF |
791 | }; |
792 | u8 flag = nla_get_u8(nlattr); | |
793 | int err; | |
794 | ||
795 | err = switchdev_port_attr_get(dev, &attr); | |
796 | if (err) | |
797 | return err; | |
798 | ||
799 | if (flag) | |
42275bd8 | 800 | attr.u.brport_flags |= brport_flag; |
47f8328b | 801 | else |
42275bd8 | 802 | attr.u.brport_flags &= ~brport_flag; |
47f8328b SF |
803 | |
804 | return switchdev_port_attr_set(dev, &attr); | |
805 | } | |
806 | ||
807 | static const struct nla_policy | |
808 | switchdev_port_bridge_policy[IFLA_BRPORT_MAX + 1] = { | |
809 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, | |
810 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, | |
811 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, | |
812 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, | |
813 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, | |
814 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, | |
815 | [IFLA_BRPORT_FAST_LEAVE] = { .type = NLA_U8 }, | |
816 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, | |
817 | [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 }, | |
818 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, | |
819 | }; | |
820 | ||
821 | static int switchdev_port_br_setlink_protinfo(struct net_device *dev, | |
822 | struct nlattr *protinfo) | |
823 | { | |
824 | struct nlattr *attr; | |
825 | int rem; | |
826 | int err; | |
827 | ||
828 | err = nla_validate_nested(protinfo, IFLA_BRPORT_MAX, | |
829 | switchdev_port_bridge_policy); | |
830 | if (err) | |
831 | return err; | |
832 | ||
833 | nla_for_each_nested(attr, protinfo, rem) { | |
834 | switch (nla_type(attr)) { | |
835 | case IFLA_BRPORT_LEARNING: | |
836 | err = switchdev_port_br_setflag(dev, attr, | |
837 | BR_LEARNING); | |
838 | break; | |
839 | case IFLA_BRPORT_LEARNING_SYNC: | |
840 | err = switchdev_port_br_setflag(dev, attr, | |
841 | BR_LEARNING_SYNC); | |
842 | break; | |
741af005 IS |
843 | case IFLA_BRPORT_UNICAST_FLOOD: |
844 | err = switchdev_port_br_setflag(dev, attr, BR_FLOOD); | |
845 | break; | |
47f8328b SF |
846 | default: |
847 | err = -EOPNOTSUPP; | |
848 | break; | |
849 | } | |
850 | if (err) | |
851 | return err; | |
852 | } | |
853 | ||
854 | return 0; | |
855 | } | |
856 | ||
857 | static int switchdev_port_br_afspec(struct net_device *dev, | |
858 | struct nlattr *afspec, | |
859 | int (*f)(struct net_device *dev, | |
648b4a99 | 860 | const struct switchdev_obj *obj)) |
47f8328b SF |
861 | { |
862 | struct nlattr *attr; | |
863 | struct bridge_vlan_info *vinfo; | |
9e8f4a54 | 864 | struct switchdev_obj_port_vlan vlan = { |
6ff64f6f | 865 | .obj.orig_dev = dev, |
9e8f4a54 JP |
866 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
867 | }; | |
47f8328b SF |
868 | int rem; |
869 | int err; | |
870 | ||
871 | nla_for_each_nested(attr, afspec, rem) { | |
872 | if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO) | |
873 | continue; | |
874 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) | |
875 | return -EINVAL; | |
876 | vinfo = nla_data(attr); | |
87aaf2ca NA |
877 | if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK) |
878 | return -EINVAL; | |
ab069002 | 879 | vlan.flags = vinfo->flags; |
47f8328b | 880 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
ab069002 | 881 | if (vlan.vid_begin) |
47f8328b | 882 | return -EINVAL; |
ab069002 | 883 | vlan.vid_begin = vinfo->vid; |
cc02aa8e NA |
884 | /* don't allow range of pvids */ |
885 | if (vlan.flags & BRIDGE_VLAN_INFO_PVID) | |
886 | return -EINVAL; | |
47f8328b | 887 | } else if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END) { |
ab069002 | 888 | if (!vlan.vid_begin) |
47f8328b | 889 | return -EINVAL; |
ab069002 VD |
890 | vlan.vid_end = vinfo->vid; |
891 | if (vlan.vid_end <= vlan.vid_begin) | |
47f8328b | 892 | return -EINVAL; |
9e8f4a54 | 893 | err = f(dev, &vlan.obj); |
47f8328b SF |
894 | if (err) |
895 | return err; | |
3a7bde55 | 896 | vlan.vid_begin = 0; |
47f8328b | 897 | } else { |
ab069002 | 898 | if (vlan.vid_begin) |
47f8328b | 899 | return -EINVAL; |
ab069002 VD |
900 | vlan.vid_begin = vinfo->vid; |
901 | vlan.vid_end = vinfo->vid; | |
9e8f4a54 | 902 | err = f(dev, &vlan.obj); |
47f8328b SF |
903 | if (err) |
904 | return err; | |
3a7bde55 | 905 | vlan.vid_begin = 0; |
47f8328b SF |
906 | } |
907 | } | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
8a44dbb2 | 912 | /** |
47f8328b | 913 | * switchdev_port_bridge_setlink - Set bridge port attributes |
8a44dbb2 RP |
914 | * |
915 | * @dev: port device | |
47f8328b SF |
916 | * @nlh: netlink header |
917 | * @flags: netlink flags | |
8a44dbb2 | 918 | * |
47f8328b SF |
919 | * Called for SELF on rtnl_bridge_setlink to set bridge port |
920 | * attributes. | |
8a44dbb2 | 921 | */ |
ebb9a03a JP |
922 | int switchdev_port_bridge_setlink(struct net_device *dev, |
923 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 | 924 | { |
47f8328b SF |
925 | struct nlattr *protinfo; |
926 | struct nlattr *afspec; | |
927 | int err = 0; | |
928 | ||
929 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), | |
930 | IFLA_PROTINFO); | |
931 | if (protinfo) { | |
932 | err = switchdev_port_br_setlink_protinfo(dev, protinfo); | |
933 | if (err) | |
934 | return err; | |
935 | } | |
8a44dbb2 | 936 | |
47f8328b SF |
937 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), |
938 | IFLA_AF_SPEC); | |
939 | if (afspec) | |
940 | err = switchdev_port_br_afspec(dev, afspec, | |
941 | switchdev_port_obj_add); | |
8a44dbb2 | 942 | |
47f8328b | 943 | return err; |
8a44dbb2 | 944 | } |
ebb9a03a | 945 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_setlink); |
8a44dbb2 RP |
946 | |
947 | /** | |
5c34e022 | 948 | * switchdev_port_bridge_dellink - Set bridge port attributes |
8a44dbb2 RP |
949 | * |
950 | * @dev: port device | |
5c34e022 SF |
951 | * @nlh: netlink header |
952 | * @flags: netlink flags | |
8a44dbb2 | 953 | * |
5c34e022 SF |
954 | * Called for SELF on rtnl_bridge_dellink to set bridge port |
955 | * attributes. | |
8a44dbb2 | 956 | */ |
ebb9a03a JP |
957 | int switchdev_port_bridge_dellink(struct net_device *dev, |
958 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 | 959 | { |
5c34e022 | 960 | struct nlattr *afspec; |
8a44dbb2 | 961 | |
5c34e022 SF |
962 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), |
963 | IFLA_AF_SPEC); | |
964 | if (afspec) | |
965 | return switchdev_port_br_afspec(dev, afspec, | |
966 | switchdev_port_obj_del); | |
8a44dbb2 | 967 | |
5c34e022 | 968 | return 0; |
8a44dbb2 | 969 | } |
ebb9a03a | 970 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_dellink); |
8a44dbb2 | 971 | |
45d4122c SS |
972 | /** |
973 | * switchdev_port_fdb_add - Add FDB (MAC/VLAN) entry to port | |
974 | * | |
975 | * @ndmsg: netlink hdr | |
976 | * @nlattr: netlink attributes | |
977 | * @dev: port device | |
978 | * @addr: MAC address to add | |
979 | * @vid: VLAN to add | |
980 | * | |
981 | * Add FDB entry to switch device. | |
982 | */ | |
983 | int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], | |
984 | struct net_device *dev, const unsigned char *addr, | |
985 | u16 vid, u16 nlm_flags) | |
986 | { | |
52ba57cf | 987 | struct switchdev_obj_port_fdb fdb = { |
6ff64f6f | 988 | .obj.orig_dev = dev, |
9e8f4a54 | 989 | .obj.id = SWITCHDEV_OBJ_ID_PORT_FDB, |
ab069002 | 990 | .vid = vid, |
45d4122c SS |
991 | }; |
992 | ||
850d0cbc | 993 | ether_addr_copy(fdb.addr, addr); |
9e8f4a54 | 994 | return switchdev_port_obj_add(dev, &fdb.obj); |
45d4122c SS |
995 | } |
996 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_add); | |
997 | ||
998 | /** | |
999 | * switchdev_port_fdb_del - Delete FDB (MAC/VLAN) entry from port | |
1000 | * | |
1001 | * @ndmsg: netlink hdr | |
1002 | * @nlattr: netlink attributes | |
1003 | * @dev: port device | |
1004 | * @addr: MAC address to delete | |
1005 | * @vid: VLAN to delete | |
1006 | * | |
1007 | * Delete FDB entry from switch device. | |
1008 | */ | |
1009 | int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], | |
1010 | struct net_device *dev, const unsigned char *addr, | |
1011 | u16 vid) | |
1012 | { | |
52ba57cf | 1013 | struct switchdev_obj_port_fdb fdb = { |
6ff64f6f | 1014 | .obj.orig_dev = dev, |
9e8f4a54 | 1015 | .obj.id = SWITCHDEV_OBJ_ID_PORT_FDB, |
ab069002 | 1016 | .vid = vid, |
45d4122c SS |
1017 | }; |
1018 | ||
850d0cbc | 1019 | ether_addr_copy(fdb.addr, addr); |
9e8f4a54 | 1020 | return switchdev_port_obj_del(dev, &fdb.obj); |
45d4122c SS |
1021 | } |
1022 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_del); | |
1023 | ||
1024 | struct switchdev_fdb_dump { | |
52ba57cf | 1025 | struct switchdev_obj_port_fdb fdb; |
e02a06b2 | 1026 | struct net_device *dev; |
45d4122c SS |
1027 | struct sk_buff *skb; |
1028 | struct netlink_callback *cb; | |
45d4122c SS |
1029 | int idx; |
1030 | }; | |
1031 | ||
648b4a99 | 1032 | static int switchdev_port_fdb_dump_cb(struct switchdev_obj *obj) |
45d4122c | 1033 | { |
648b4a99 | 1034 | struct switchdev_obj_port_fdb *fdb = SWITCHDEV_OBJ_PORT_FDB(obj); |
45d4122c | 1035 | struct switchdev_fdb_dump *dump = |
25f07adc | 1036 | container_of(fdb, struct switchdev_fdb_dump, fdb); |
45d4122c SS |
1037 | u32 portid = NETLINK_CB(dump->cb->skb).portid; |
1038 | u32 seq = dump->cb->nlh->nlmsg_seq; | |
1039 | struct nlmsghdr *nlh; | |
1040 | struct ndmsg *ndm; | |
45d4122c | 1041 | |
d297653d | 1042 | if (dump->idx < dump->cb->args[2]) |
45d4122c SS |
1043 | goto skip; |
1044 | ||
45d4122c SS |
1045 | nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, |
1046 | sizeof(*ndm), NLM_F_MULTI); | |
1047 | if (!nlh) | |
1048 | return -EMSGSIZE; | |
1049 | ||
1050 | ndm = nlmsg_data(nlh); | |
1051 | ndm->ndm_family = AF_BRIDGE; | |
1052 | ndm->ndm_pad1 = 0; | |
1053 | ndm->ndm_pad2 = 0; | |
1054 | ndm->ndm_flags = NTF_SELF; | |
1055 | ndm->ndm_type = 0; | |
e02a06b2 | 1056 | ndm->ndm_ifindex = dump->dev->ifindex; |
25f07adc | 1057 | ndm->ndm_state = fdb->ndm_state; |
45d4122c | 1058 | |
25f07adc | 1059 | if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, fdb->addr)) |
45d4122c SS |
1060 | goto nla_put_failure; |
1061 | ||
25f07adc | 1062 | if (fdb->vid && nla_put_u16(dump->skb, NDA_VLAN, fdb->vid)) |
45d4122c SS |
1063 | goto nla_put_failure; |
1064 | ||
1065 | nlmsg_end(dump->skb, nlh); | |
1066 | ||
1067 | skip: | |
1068 | dump->idx++; | |
1069 | return 0; | |
1070 | ||
1071 | nla_put_failure: | |
1072 | nlmsg_cancel(dump->skb, nlh); | |
1073 | return -EMSGSIZE; | |
1074 | } | |
1075 | ||
1076 | /** | |
1077 | * switchdev_port_fdb_dump - Dump port FDB (MAC/VLAN) entries | |
1078 | * | |
1079 | * @skb: netlink skb | |
1080 | * @cb: netlink callback | |
1081 | * @dev: port device | |
1082 | * @filter_dev: filter device | |
1083 | * @idx: | |
1084 | * | |
3e347660 | 1085 | * Dump FDB entries from switch device. |
45d4122c SS |
1086 | */ |
1087 | int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
1088 | struct net_device *dev, | |
d297653d | 1089 | struct net_device *filter_dev, int *idx) |
45d4122c SS |
1090 | { |
1091 | struct switchdev_fdb_dump dump = { | |
6ff64f6f | 1092 | .fdb.obj.orig_dev = dev, |
9e8f4a54 | 1093 | .fdb.obj.id = SWITCHDEV_OBJ_ID_PORT_FDB, |
e02a06b2 | 1094 | .dev = dev, |
45d4122c SS |
1095 | .skb = skb, |
1096 | .cb = cb, | |
d297653d | 1097 | .idx = *idx, |
45d4122c | 1098 | }; |
472681d5 | 1099 | int err; |
45d4122c | 1100 | |
472681d5 MM |
1101 | err = switchdev_port_obj_dump(dev, &dump.fdb.obj, |
1102 | switchdev_port_fdb_dump_cb); | |
d297653d RP |
1103 | *idx = dump.idx; |
1104 | return err; | |
45d4122c SS |
1105 | } |
1106 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump); | |
1107 | ||
8438884d OG |
1108 | bool switchdev_port_same_parent_id(struct net_device *a, |
1109 | struct net_device *b) | |
1a3b2ec9 SF |
1110 | { |
1111 | struct switchdev_attr a_attr = { | |
6ff64f6f | 1112 | .orig_dev = a, |
1f868398 | 1113 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
1a3b2ec9 SF |
1114 | }; |
1115 | struct switchdev_attr b_attr = { | |
6ff64f6f | 1116 | .orig_dev = b, |
1f868398 | 1117 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
1a3b2ec9 SF |
1118 | }; |
1119 | ||
1120 | if (switchdev_port_attr_get(a, &a_attr) || | |
1121 | switchdev_port_attr_get(b, &b_attr)) | |
1122 | return false; | |
1123 | ||
1124 | return netdev_phys_item_id_same(&a_attr.u.ppid, &b_attr.u.ppid); | |
1125 | } | |
2eb03e6c | 1126 | EXPORT_SYMBOL_GPL(switchdev_port_same_parent_id); |