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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 | ||
ff5cf100 | 574 | static ATOMIC_NOTIFIER_HEAD(switchdev_notif_chain); |
03bf0c28 JP |
575 | |
576 | /** | |
ebb9a03a | 577 | * register_switchdev_notifier - Register notifier |
03bf0c28 JP |
578 | * @nb: notifier_block |
579 | * | |
ff5cf100 | 580 | * Register switch device notifier. |
03bf0c28 | 581 | */ |
ebb9a03a | 582 | int register_switchdev_notifier(struct notifier_block *nb) |
03bf0c28 | 583 | { |
ff5cf100 | 584 | return atomic_notifier_chain_register(&switchdev_notif_chain, nb); |
03bf0c28 | 585 | } |
ebb9a03a | 586 | EXPORT_SYMBOL_GPL(register_switchdev_notifier); |
03bf0c28 JP |
587 | |
588 | /** | |
ebb9a03a | 589 | * unregister_switchdev_notifier - Unregister notifier |
03bf0c28 JP |
590 | * @nb: notifier_block |
591 | * | |
592 | * Unregister switch device notifier. | |
03bf0c28 | 593 | */ |
ebb9a03a | 594 | int unregister_switchdev_notifier(struct notifier_block *nb) |
03bf0c28 | 595 | { |
ff5cf100 | 596 | return atomic_notifier_chain_unregister(&switchdev_notif_chain, nb); |
03bf0c28 | 597 | } |
ebb9a03a | 598 | EXPORT_SYMBOL_GPL(unregister_switchdev_notifier); |
03bf0c28 JP |
599 | |
600 | /** | |
ebb9a03a | 601 | * call_switchdev_notifiers - Call notifiers |
03bf0c28 JP |
602 | * @val: value passed unmodified to notifier function |
603 | * @dev: port device | |
604 | * @info: notifier information data | |
605 | * | |
ff5cf100 | 606 | * Call all network notifier blocks. |
03bf0c28 | 607 | */ |
ebb9a03a JP |
608 | int call_switchdev_notifiers(unsigned long val, struct net_device *dev, |
609 | struct switchdev_notifier_info *info) | |
03bf0c28 | 610 | { |
03bf0c28 | 611 | info->dev = dev; |
ff5cf100 | 612 | return atomic_notifier_call_chain(&switchdev_notif_chain, val, info); |
03bf0c28 | 613 | } |
ebb9a03a | 614 | EXPORT_SYMBOL_GPL(call_switchdev_notifiers); |
8a44dbb2 | 615 | |
7d4f8d87 | 616 | struct switchdev_vlan_dump { |
8f24f309 | 617 | struct switchdev_obj_port_vlan vlan; |
7d4f8d87 SF |
618 | struct sk_buff *skb; |
619 | u32 filter_mask; | |
620 | u16 flags; | |
621 | u16 begin; | |
622 | u16 end; | |
623 | }; | |
624 | ||
e23b002b | 625 | static int switchdev_port_vlan_dump_put(struct switchdev_vlan_dump *dump) |
7d4f8d87 SF |
626 | { |
627 | struct bridge_vlan_info vinfo; | |
628 | ||
629 | vinfo.flags = dump->flags; | |
630 | ||
631 | if (dump->begin == 0 && dump->end == 0) { | |
632 | return 0; | |
633 | } else if (dump->begin == dump->end) { | |
634 | vinfo.vid = dump->begin; | |
635 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
636 | sizeof(vinfo), &vinfo)) | |
637 | return -EMSGSIZE; | |
638 | } else { | |
639 | vinfo.vid = dump->begin; | |
640 | vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
641 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
642 | sizeof(vinfo), &vinfo)) | |
643 | return -EMSGSIZE; | |
644 | vinfo.vid = dump->end; | |
645 | vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
646 | vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_END; | |
647 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
648 | sizeof(vinfo), &vinfo)) | |
649 | return -EMSGSIZE; | |
650 | } | |
651 | ||
652 | return 0; | |
653 | } | |
654 | ||
648b4a99 | 655 | static int switchdev_port_vlan_dump_cb(struct switchdev_obj *obj) |
7d4f8d87 | 656 | { |
648b4a99 | 657 | struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); |
7d4f8d87 | 658 | struct switchdev_vlan_dump *dump = |
25f07adc | 659 | container_of(vlan, struct switchdev_vlan_dump, vlan); |
7d4f8d87 SF |
660 | int err = 0; |
661 | ||
662 | if (vlan->vid_begin > vlan->vid_end) | |
663 | return -EINVAL; | |
664 | ||
665 | if (dump->filter_mask & RTEXT_FILTER_BRVLAN) { | |
666 | dump->flags = vlan->flags; | |
667 | for (dump->begin = dump->end = vlan->vid_begin; | |
668 | dump->begin <= vlan->vid_end; | |
669 | dump->begin++, dump->end++) { | |
e23b002b | 670 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
671 | if (err) |
672 | return err; | |
673 | } | |
674 | } else if (dump->filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) { | |
675 | if (dump->begin > vlan->vid_begin && | |
676 | dump->begin >= vlan->vid_end) { | |
677 | if ((dump->begin - 1) == vlan->vid_end && | |
678 | dump->flags == vlan->flags) { | |
679 | /* prepend */ | |
680 | dump->begin = vlan->vid_begin; | |
681 | } else { | |
e23b002b | 682 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
683 | dump->flags = vlan->flags; |
684 | dump->begin = vlan->vid_begin; | |
685 | dump->end = vlan->vid_end; | |
686 | } | |
687 | } else if (dump->end <= vlan->vid_begin && | |
688 | dump->end < vlan->vid_end) { | |
689 | if ((dump->end + 1) == vlan->vid_begin && | |
690 | dump->flags == vlan->flags) { | |
691 | /* append */ | |
692 | dump->end = vlan->vid_end; | |
693 | } else { | |
e23b002b | 694 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
695 | dump->flags = vlan->flags; |
696 | dump->begin = vlan->vid_begin; | |
697 | dump->end = vlan->vid_end; | |
698 | } | |
699 | } else { | |
700 | err = -EINVAL; | |
701 | } | |
702 | } | |
703 | ||
704 | return err; | |
705 | } | |
706 | ||
707 | static int switchdev_port_vlan_fill(struct sk_buff *skb, struct net_device *dev, | |
708 | u32 filter_mask) | |
709 | { | |
710 | struct switchdev_vlan_dump dump = { | |
6ff64f6f | 711 | .vlan.obj.orig_dev = dev, |
9e8f4a54 | 712 | .vlan.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
7d4f8d87 SF |
713 | .skb = skb, |
714 | .filter_mask = filter_mask, | |
715 | }; | |
716 | int err = 0; | |
717 | ||
718 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || | |
719 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { | |
9e8f4a54 | 720 | err = switchdev_port_obj_dump(dev, &dump.vlan.obj, |
25f07adc | 721 | switchdev_port_vlan_dump_cb); |
7d4f8d87 SF |
722 | if (err) |
723 | goto err_out; | |
724 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) | |
725 | /* last one */ | |
e23b002b | 726 | err = switchdev_port_vlan_dump_put(&dump); |
7d4f8d87 SF |
727 | } |
728 | ||
729 | err_out: | |
730 | return err == -EOPNOTSUPP ? 0 : err; | |
731 | } | |
732 | ||
8793d0a6 SF |
733 | /** |
734 | * switchdev_port_bridge_getlink - Get bridge port attributes | |
735 | * | |
736 | * @dev: port device | |
737 | * | |
738 | * Called for SELF on rtnl_bridge_getlink to get bridge port | |
739 | * attributes. | |
740 | */ | |
741 | int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, | |
742 | struct net_device *dev, u32 filter_mask, | |
743 | int nlflags) | |
744 | { | |
745 | struct switchdev_attr attr = { | |
6ff64f6f | 746 | .orig_dev = dev, |
1f868398 | 747 | .id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, |
8793d0a6 SF |
748 | }; |
749 | u16 mode = BRIDGE_MODE_UNDEF; | |
741af005 | 750 | u32 mask = BR_LEARNING | BR_LEARNING_SYNC | BR_FLOOD; |
8793d0a6 SF |
751 | int err; |
752 | ||
97c24290 IS |
753 | if (!netif_is_bridge_port(dev)) |
754 | return -EOPNOTSUPP; | |
755 | ||
8793d0a6 | 756 | err = switchdev_port_attr_get(dev, &attr); |
5c8079d0 | 757 | if (err && err != -EOPNOTSUPP) |
8793d0a6 SF |
758 | return err; |
759 | ||
760 | return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, | |
7d4f8d87 SF |
761 | attr.u.brport_flags, mask, nlflags, |
762 | filter_mask, switchdev_port_vlan_fill); | |
8793d0a6 SF |
763 | } |
764 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_getlink); | |
765 | ||
47f8328b SF |
766 | static int switchdev_port_br_setflag(struct net_device *dev, |
767 | struct nlattr *nlattr, | |
768 | unsigned long brport_flag) | |
769 | { | |
770 | struct switchdev_attr attr = { | |
6ff64f6f | 771 | .orig_dev = dev, |
1f868398 | 772 | .id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, |
47f8328b SF |
773 | }; |
774 | u8 flag = nla_get_u8(nlattr); | |
775 | int err; | |
776 | ||
777 | err = switchdev_port_attr_get(dev, &attr); | |
778 | if (err) | |
779 | return err; | |
780 | ||
781 | if (flag) | |
42275bd8 | 782 | attr.u.brport_flags |= brport_flag; |
47f8328b | 783 | else |
42275bd8 | 784 | attr.u.brport_flags &= ~brport_flag; |
47f8328b SF |
785 | |
786 | return switchdev_port_attr_set(dev, &attr); | |
787 | } | |
788 | ||
789 | static const struct nla_policy | |
790 | switchdev_port_bridge_policy[IFLA_BRPORT_MAX + 1] = { | |
791 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, | |
792 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, | |
793 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, | |
794 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, | |
795 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, | |
796 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, | |
797 | [IFLA_BRPORT_FAST_LEAVE] = { .type = NLA_U8 }, | |
798 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, | |
799 | [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 }, | |
800 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, | |
801 | }; | |
802 | ||
803 | static int switchdev_port_br_setlink_protinfo(struct net_device *dev, | |
804 | struct nlattr *protinfo) | |
805 | { | |
806 | struct nlattr *attr; | |
807 | int rem; | |
808 | int err; | |
809 | ||
810 | err = nla_validate_nested(protinfo, IFLA_BRPORT_MAX, | |
fceb6435 | 811 | switchdev_port_bridge_policy, NULL); |
47f8328b SF |
812 | if (err) |
813 | return err; | |
814 | ||
815 | nla_for_each_nested(attr, protinfo, rem) { | |
816 | switch (nla_type(attr)) { | |
817 | case IFLA_BRPORT_LEARNING: | |
818 | err = switchdev_port_br_setflag(dev, attr, | |
819 | BR_LEARNING); | |
820 | break; | |
821 | case IFLA_BRPORT_LEARNING_SYNC: | |
822 | err = switchdev_port_br_setflag(dev, attr, | |
823 | BR_LEARNING_SYNC); | |
824 | break; | |
741af005 IS |
825 | case IFLA_BRPORT_UNICAST_FLOOD: |
826 | err = switchdev_port_br_setflag(dev, attr, BR_FLOOD); | |
827 | break; | |
47f8328b SF |
828 | default: |
829 | err = -EOPNOTSUPP; | |
830 | break; | |
831 | } | |
832 | if (err) | |
833 | return err; | |
834 | } | |
835 | ||
836 | return 0; | |
837 | } | |
838 | ||
839 | static int switchdev_port_br_afspec(struct net_device *dev, | |
840 | struct nlattr *afspec, | |
841 | int (*f)(struct net_device *dev, | |
648b4a99 | 842 | const struct switchdev_obj *obj)) |
47f8328b SF |
843 | { |
844 | struct nlattr *attr; | |
845 | struct bridge_vlan_info *vinfo; | |
9e8f4a54 | 846 | struct switchdev_obj_port_vlan vlan = { |
6ff64f6f | 847 | .obj.orig_dev = dev, |
9e8f4a54 JP |
848 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
849 | }; | |
47f8328b SF |
850 | int rem; |
851 | int err; | |
852 | ||
853 | nla_for_each_nested(attr, afspec, rem) { | |
854 | if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO) | |
855 | continue; | |
856 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) | |
857 | return -EINVAL; | |
858 | vinfo = nla_data(attr); | |
87aaf2ca NA |
859 | if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK) |
860 | return -EINVAL; | |
ab069002 | 861 | vlan.flags = vinfo->flags; |
47f8328b | 862 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
ab069002 | 863 | if (vlan.vid_begin) |
47f8328b | 864 | return -EINVAL; |
ab069002 | 865 | vlan.vid_begin = vinfo->vid; |
cc02aa8e NA |
866 | /* don't allow range of pvids */ |
867 | if (vlan.flags & BRIDGE_VLAN_INFO_PVID) | |
868 | return -EINVAL; | |
47f8328b | 869 | } else if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END) { |
ab069002 | 870 | if (!vlan.vid_begin) |
47f8328b | 871 | return -EINVAL; |
ab069002 VD |
872 | vlan.vid_end = vinfo->vid; |
873 | if (vlan.vid_end <= vlan.vid_begin) | |
47f8328b | 874 | return -EINVAL; |
9e8f4a54 | 875 | err = f(dev, &vlan.obj); |
47f8328b SF |
876 | if (err) |
877 | return err; | |
3a7bde55 | 878 | vlan.vid_begin = 0; |
47f8328b | 879 | } else { |
ab069002 | 880 | if (vlan.vid_begin) |
47f8328b | 881 | return -EINVAL; |
ab069002 VD |
882 | vlan.vid_begin = vinfo->vid; |
883 | vlan.vid_end = vinfo->vid; | |
9e8f4a54 | 884 | err = f(dev, &vlan.obj); |
47f8328b SF |
885 | if (err) |
886 | return err; | |
3a7bde55 | 887 | vlan.vid_begin = 0; |
47f8328b SF |
888 | } |
889 | } | |
890 | ||
891 | return 0; | |
892 | } | |
893 | ||
8a44dbb2 | 894 | /** |
47f8328b | 895 | * switchdev_port_bridge_setlink - Set bridge port attributes |
8a44dbb2 RP |
896 | * |
897 | * @dev: port device | |
47f8328b SF |
898 | * @nlh: netlink header |
899 | * @flags: netlink flags | |
8a44dbb2 | 900 | * |
47f8328b SF |
901 | * Called for SELF on rtnl_bridge_setlink to set bridge port |
902 | * attributes. | |
8a44dbb2 | 903 | */ |
ebb9a03a JP |
904 | int switchdev_port_bridge_setlink(struct net_device *dev, |
905 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 | 906 | { |
47f8328b SF |
907 | struct nlattr *protinfo; |
908 | struct nlattr *afspec; | |
909 | int err = 0; | |
910 | ||
97c24290 IS |
911 | if (!netif_is_bridge_port(dev)) |
912 | return -EOPNOTSUPP; | |
913 | ||
47f8328b SF |
914 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), |
915 | IFLA_PROTINFO); | |
916 | if (protinfo) { | |
917 | err = switchdev_port_br_setlink_protinfo(dev, protinfo); | |
918 | if (err) | |
919 | return err; | |
920 | } | |
8a44dbb2 | 921 | |
47f8328b SF |
922 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), |
923 | IFLA_AF_SPEC); | |
924 | if (afspec) | |
925 | err = switchdev_port_br_afspec(dev, afspec, | |
926 | switchdev_port_obj_add); | |
8a44dbb2 | 927 | |
47f8328b | 928 | return err; |
8a44dbb2 | 929 | } |
ebb9a03a | 930 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_setlink); |
8a44dbb2 RP |
931 | |
932 | /** | |
5c34e022 | 933 | * switchdev_port_bridge_dellink - Set bridge port attributes |
8a44dbb2 RP |
934 | * |
935 | * @dev: port device | |
5c34e022 SF |
936 | * @nlh: netlink header |
937 | * @flags: netlink flags | |
8a44dbb2 | 938 | * |
5c34e022 SF |
939 | * Called for SELF on rtnl_bridge_dellink to set bridge port |
940 | * attributes. | |
8a44dbb2 | 941 | */ |
ebb9a03a JP |
942 | int switchdev_port_bridge_dellink(struct net_device *dev, |
943 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 | 944 | { |
5c34e022 | 945 | struct nlattr *afspec; |
8a44dbb2 | 946 | |
97c24290 IS |
947 | if (!netif_is_bridge_port(dev)) |
948 | return -EOPNOTSUPP; | |
949 | ||
5c34e022 SF |
950 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), |
951 | IFLA_AF_SPEC); | |
952 | if (afspec) | |
953 | return switchdev_port_br_afspec(dev, afspec, | |
954 | switchdev_port_obj_del); | |
8a44dbb2 | 955 | |
5c34e022 | 956 | return 0; |
8a44dbb2 | 957 | } |
ebb9a03a | 958 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_dellink); |
8a44dbb2 | 959 | |
45d4122c SS |
960 | /** |
961 | * switchdev_port_fdb_add - Add FDB (MAC/VLAN) entry to port | |
962 | * | |
963 | * @ndmsg: netlink hdr | |
964 | * @nlattr: netlink attributes | |
965 | * @dev: port device | |
966 | * @addr: MAC address to add | |
967 | * @vid: VLAN to add | |
968 | * | |
969 | * Add FDB entry to switch device. | |
970 | */ | |
971 | int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], | |
972 | struct net_device *dev, const unsigned char *addr, | |
973 | u16 vid, u16 nlm_flags) | |
974 | { | |
52ba57cf | 975 | struct switchdev_obj_port_fdb fdb = { |
6ff64f6f | 976 | .obj.orig_dev = dev, |
9e8f4a54 | 977 | .obj.id = SWITCHDEV_OBJ_ID_PORT_FDB, |
ab069002 | 978 | .vid = vid, |
45d4122c SS |
979 | }; |
980 | ||
850d0cbc | 981 | ether_addr_copy(fdb.addr, addr); |
9e8f4a54 | 982 | return switchdev_port_obj_add(dev, &fdb.obj); |
45d4122c SS |
983 | } |
984 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_add); | |
985 | ||
986 | /** | |
987 | * switchdev_port_fdb_del - Delete FDB (MAC/VLAN) entry from port | |
988 | * | |
989 | * @ndmsg: netlink hdr | |
990 | * @nlattr: netlink attributes | |
991 | * @dev: port device | |
992 | * @addr: MAC address to delete | |
993 | * @vid: VLAN to delete | |
994 | * | |
995 | * Delete FDB entry from switch device. | |
996 | */ | |
997 | int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], | |
998 | struct net_device *dev, const unsigned char *addr, | |
999 | u16 vid) | |
1000 | { | |
52ba57cf | 1001 | struct switchdev_obj_port_fdb fdb = { |
6ff64f6f | 1002 | .obj.orig_dev = dev, |
9e8f4a54 | 1003 | .obj.id = SWITCHDEV_OBJ_ID_PORT_FDB, |
ab069002 | 1004 | .vid = vid, |
45d4122c SS |
1005 | }; |
1006 | ||
850d0cbc | 1007 | ether_addr_copy(fdb.addr, addr); |
9e8f4a54 | 1008 | return switchdev_port_obj_del(dev, &fdb.obj); |
45d4122c SS |
1009 | } |
1010 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_del); | |
1011 | ||
1012 | struct switchdev_fdb_dump { | |
52ba57cf | 1013 | struct switchdev_obj_port_fdb fdb; |
e02a06b2 | 1014 | struct net_device *dev; |
45d4122c SS |
1015 | struct sk_buff *skb; |
1016 | struct netlink_callback *cb; | |
45d4122c SS |
1017 | int idx; |
1018 | }; | |
1019 | ||
648b4a99 | 1020 | static int switchdev_port_fdb_dump_cb(struct switchdev_obj *obj) |
45d4122c | 1021 | { |
648b4a99 | 1022 | struct switchdev_obj_port_fdb *fdb = SWITCHDEV_OBJ_PORT_FDB(obj); |
45d4122c | 1023 | struct switchdev_fdb_dump *dump = |
25f07adc | 1024 | container_of(fdb, struct switchdev_fdb_dump, fdb); |
45d4122c SS |
1025 | u32 portid = NETLINK_CB(dump->cb->skb).portid; |
1026 | u32 seq = dump->cb->nlh->nlmsg_seq; | |
1027 | struct nlmsghdr *nlh; | |
1028 | struct ndmsg *ndm; | |
45d4122c | 1029 | |
d297653d | 1030 | if (dump->idx < dump->cb->args[2]) |
45d4122c SS |
1031 | goto skip; |
1032 | ||
45d4122c SS |
1033 | nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, |
1034 | sizeof(*ndm), NLM_F_MULTI); | |
1035 | if (!nlh) | |
1036 | return -EMSGSIZE; | |
1037 | ||
1038 | ndm = nlmsg_data(nlh); | |
1039 | ndm->ndm_family = AF_BRIDGE; | |
1040 | ndm->ndm_pad1 = 0; | |
1041 | ndm->ndm_pad2 = 0; | |
1042 | ndm->ndm_flags = NTF_SELF; | |
1043 | ndm->ndm_type = 0; | |
e02a06b2 | 1044 | ndm->ndm_ifindex = dump->dev->ifindex; |
25f07adc | 1045 | ndm->ndm_state = fdb->ndm_state; |
45d4122c | 1046 | |
25f07adc | 1047 | if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, fdb->addr)) |
45d4122c SS |
1048 | goto nla_put_failure; |
1049 | ||
25f07adc | 1050 | if (fdb->vid && nla_put_u16(dump->skb, NDA_VLAN, fdb->vid)) |
45d4122c SS |
1051 | goto nla_put_failure; |
1052 | ||
1053 | nlmsg_end(dump->skb, nlh); | |
1054 | ||
1055 | skip: | |
1056 | dump->idx++; | |
1057 | return 0; | |
1058 | ||
1059 | nla_put_failure: | |
1060 | nlmsg_cancel(dump->skb, nlh); | |
1061 | return -EMSGSIZE; | |
1062 | } | |
1063 | ||
1064 | /** | |
1065 | * switchdev_port_fdb_dump - Dump port FDB (MAC/VLAN) entries | |
1066 | * | |
1067 | * @skb: netlink skb | |
1068 | * @cb: netlink callback | |
1069 | * @dev: port device | |
1070 | * @filter_dev: filter device | |
1071 | * @idx: | |
1072 | * | |
3e347660 | 1073 | * Dump FDB entries from switch device. |
45d4122c SS |
1074 | */ |
1075 | int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
1076 | struct net_device *dev, | |
d297653d | 1077 | struct net_device *filter_dev, int *idx) |
45d4122c SS |
1078 | { |
1079 | struct switchdev_fdb_dump dump = { | |
6ff64f6f | 1080 | .fdb.obj.orig_dev = dev, |
9e8f4a54 | 1081 | .fdb.obj.id = SWITCHDEV_OBJ_ID_PORT_FDB, |
e02a06b2 | 1082 | .dev = dev, |
45d4122c SS |
1083 | .skb = skb, |
1084 | .cb = cb, | |
d297653d | 1085 | .idx = *idx, |
45d4122c | 1086 | }; |
472681d5 | 1087 | int err; |
45d4122c | 1088 | |
472681d5 MM |
1089 | err = switchdev_port_obj_dump(dev, &dump.fdb.obj, |
1090 | switchdev_port_fdb_dump_cb); | |
d297653d RP |
1091 | *idx = dump.idx; |
1092 | return err; | |
45d4122c SS |
1093 | } |
1094 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump); | |
1095 | ||
8438884d OG |
1096 | bool switchdev_port_same_parent_id(struct net_device *a, |
1097 | struct net_device *b) | |
1a3b2ec9 SF |
1098 | { |
1099 | struct switchdev_attr a_attr = { | |
6ff64f6f | 1100 | .orig_dev = a, |
1f868398 | 1101 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
1a3b2ec9 SF |
1102 | }; |
1103 | struct switchdev_attr b_attr = { | |
6ff64f6f | 1104 | .orig_dev = b, |
1f868398 | 1105 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
1a3b2ec9 SF |
1106 | }; |
1107 | ||
1108 | if (switchdev_port_attr_get(a, &a_attr) || | |
1109 | switchdev_port_attr_get(b, &b_attr)) | |
1110 | return false; | |
1111 | ||
1112 | return netdev_phys_item_id_same(&a_attr.u.ppid, &b_attr.u.ppid); | |
1113 | } | |
2eb03e6c | 1114 | EXPORT_SYMBOL_GPL(switchdev_port_same_parent_id); |