Commit | Line | Data |
---|---|---|
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> |
5e8d9049 | 23 | #include <net/ip_fib.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); | |
307 | } | |
308 | ||
309 | static int switchdev_port_attr_set_defer(struct net_device *dev, | |
310 | const struct switchdev_attr *attr) | |
311 | { | |
312 | return switchdev_deferred_enqueue(dev, attr, sizeof(*attr), | |
313 | switchdev_port_attr_set_deferred); | |
314 | } | |
315 | ||
316 | /** | |
317 | * switchdev_port_attr_set - Set port attribute | |
318 | * | |
319 | * @dev: port device | |
320 | * @attr: attribute to set | |
321 | * | |
322 | * Use a 2-phase prepare-commit transaction model to ensure | |
323 | * system is not left in a partially updated state due to | |
324 | * failure from driver/device. | |
325 | * | |
326 | * rtnl_lock must be held and must not be in atomic section, | |
327 | * in case SWITCHDEV_F_DEFER flag is not set. | |
328 | */ | |
329 | int switchdev_port_attr_set(struct net_device *dev, | |
330 | const struct switchdev_attr *attr) | |
331 | { | |
332 | if (attr->flags & SWITCHDEV_F_DEFER) | |
333 | return switchdev_port_attr_set_defer(dev, attr); | |
334 | ASSERT_RTNL(); | |
335 | return switchdev_port_attr_set_now(dev, attr); | |
336 | } | |
3094333d SF |
337 | EXPORT_SYMBOL_GPL(switchdev_port_attr_set); |
338 | ||
e258d919 SF |
339 | static size_t switchdev_obj_size(const struct switchdev_obj *obj) |
340 | { | |
341 | switch (obj->id) { | |
342 | case SWITCHDEV_OBJ_ID_PORT_VLAN: | |
343 | return sizeof(struct switchdev_obj_port_vlan); | |
344 | case SWITCHDEV_OBJ_ID_IPV4_FIB: | |
345 | return sizeof(struct switchdev_obj_ipv4_fib); | |
346 | case SWITCHDEV_OBJ_ID_PORT_FDB: | |
347 | return sizeof(struct switchdev_obj_port_fdb); | |
348 | default: | |
349 | BUG(); | |
350 | } | |
351 | return 0; | |
352 | } | |
353 | ||
22c1f67e | 354 | static int __switchdev_port_obj_add(struct net_device *dev, |
648b4a99 | 355 | const struct switchdev_obj *obj, |
7ea6eb3f | 356 | struct switchdev_trans *trans) |
491d0f15 SF |
357 | { |
358 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
359 | struct net_device *lower_dev; | |
360 | struct list_head *iter; | |
361 | int err = -EOPNOTSUPP; | |
362 | ||
363 | if (ops && ops->switchdev_port_obj_add) | |
9e8f4a54 | 364 | return ops->switchdev_port_obj_add(dev, obj, trans); |
491d0f15 SF |
365 | |
366 | /* Switch device port(s) may be stacked under | |
367 | * bond/team/vlan dev, so recurse down to add object on | |
368 | * each port. | |
369 | */ | |
370 | ||
371 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
9e8f4a54 | 372 | err = __switchdev_port_obj_add(lower_dev, obj, trans); |
491d0f15 SF |
373 | if (err) |
374 | break; | |
375 | } | |
376 | ||
377 | return err; | |
378 | } | |
379 | ||
4d429c5d JP |
380 | static int switchdev_port_obj_add_now(struct net_device *dev, |
381 | const struct switchdev_obj *obj) | |
491d0f15 | 382 | { |
7ea6eb3f | 383 | struct switchdev_trans trans; |
491d0f15 SF |
384 | int err; |
385 | ||
386 | ASSERT_RTNL(); | |
387 | ||
7ea6eb3f JP |
388 | switchdev_trans_init(&trans); |
389 | ||
491d0f15 SF |
390 | /* Phase I: prepare for obj add. Driver/device should fail |
391 | * here if there are going to be issues in the commit phase, | |
392 | * such as lack of resources or support. The driver/device | |
393 | * should reserve resources needed for the commit phase here, | |
394 | * but should not commit the obj. | |
395 | */ | |
396 | ||
f623ab7f | 397 | trans.ph_prepare = true; |
9e8f4a54 | 398 | err = __switchdev_port_obj_add(dev, obj, &trans); |
491d0f15 SF |
399 | if (err) { |
400 | /* Prepare phase failed: abort the transaction. Any | |
401 | * resources reserved in the prepare phase are | |
402 | * released. | |
403 | */ | |
404 | ||
9f6467cf | 405 | if (err != -EOPNOTSUPP) |
7ea6eb3f | 406 | switchdev_trans_items_destroy(&trans); |
491d0f15 SF |
407 | |
408 | return err; | |
409 | } | |
410 | ||
411 | /* Phase II: commit obj add. This cannot fail as a fault | |
412 | * of driver/device. If it does, it's a bug in the driver/device | |
413 | * because the driver said everythings was OK in phase I. | |
414 | */ | |
415 | ||
f623ab7f | 416 | trans.ph_prepare = false; |
9e8f4a54 JP |
417 | err = __switchdev_port_obj_add(dev, obj, &trans); |
418 | WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, obj->id); | |
7ea6eb3f | 419 | switchdev_trans_items_warn_destroy(dev, &trans); |
491d0f15 SF |
420 | |
421 | return err; | |
422 | } | |
4d429c5d JP |
423 | |
424 | static void switchdev_port_obj_add_deferred(struct net_device *dev, | |
425 | const void *data) | |
426 | { | |
427 | const struct switchdev_obj *obj = data; | |
428 | int err; | |
429 | ||
430 | err = switchdev_port_obj_add_now(dev, obj); | |
431 | if (err && err != -EOPNOTSUPP) | |
432 | netdev_err(dev, "failed (err=%d) to add object (id=%d)\n", | |
433 | err, obj->id); | |
434 | } | |
435 | ||
436 | static int switchdev_port_obj_add_defer(struct net_device *dev, | |
437 | const struct switchdev_obj *obj) | |
438 | { | |
e258d919 | 439 | return switchdev_deferred_enqueue(dev, obj, switchdev_obj_size(obj), |
4d429c5d JP |
440 | switchdev_port_obj_add_deferred); |
441 | } | |
491d0f15 SF |
442 | |
443 | /** | |
4d429c5d | 444 | * switchdev_port_obj_add - Add port object |
491d0f15 SF |
445 | * |
446 | * @dev: port device | |
ab069002 | 447 | * @id: object ID |
4d429c5d JP |
448 | * @obj: object to add |
449 | * | |
450 | * Use a 2-phase prepare-commit transaction model to ensure | |
451 | * system is not left in a partially updated state due to | |
452 | * failure from driver/device. | |
453 | * | |
454 | * rtnl_lock must be held and must not be in atomic section, | |
455 | * in case SWITCHDEV_F_DEFER flag is not set. | |
491d0f15 | 456 | */ |
4d429c5d | 457 | int switchdev_port_obj_add(struct net_device *dev, |
648b4a99 | 458 | const struct switchdev_obj *obj) |
4d429c5d JP |
459 | { |
460 | if (obj->flags & SWITCHDEV_F_DEFER) | |
461 | return switchdev_port_obj_add_defer(dev, obj); | |
462 | ASSERT_RTNL(); | |
463 | return switchdev_port_obj_add_now(dev, obj); | |
464 | } | |
465 | EXPORT_SYMBOL_GPL(switchdev_port_obj_add); | |
466 | ||
467 | static int switchdev_port_obj_del_now(struct net_device *dev, | |
468 | const struct switchdev_obj *obj) | |
491d0f15 SF |
469 | { |
470 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
471 | struct net_device *lower_dev; | |
472 | struct list_head *iter; | |
473 | int err = -EOPNOTSUPP; | |
474 | ||
475 | if (ops && ops->switchdev_port_obj_del) | |
9e8f4a54 | 476 | return ops->switchdev_port_obj_del(dev, obj); |
491d0f15 SF |
477 | |
478 | /* Switch device port(s) may be stacked under | |
479 | * bond/team/vlan dev, so recurse down to delete object on | |
480 | * each port. | |
481 | */ | |
482 | ||
483 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
4d429c5d | 484 | err = switchdev_port_obj_del_now(lower_dev, obj); |
491d0f15 SF |
485 | if (err) |
486 | break; | |
487 | } | |
488 | ||
489 | return err; | |
490 | } | |
4d429c5d JP |
491 | |
492 | static void switchdev_port_obj_del_deferred(struct net_device *dev, | |
493 | const void *data) | |
494 | { | |
495 | const struct switchdev_obj *obj = data; | |
496 | int err; | |
497 | ||
498 | err = switchdev_port_obj_del_now(dev, obj); | |
499 | if (err && err != -EOPNOTSUPP) | |
500 | netdev_err(dev, "failed (err=%d) to del object (id=%d)\n", | |
501 | err, obj->id); | |
502 | } | |
503 | ||
504 | static int switchdev_port_obj_del_defer(struct net_device *dev, | |
505 | const struct switchdev_obj *obj) | |
506 | { | |
e258d919 | 507 | return switchdev_deferred_enqueue(dev, obj, switchdev_obj_size(obj), |
4d429c5d JP |
508 | switchdev_port_obj_del_deferred); |
509 | } | |
510 | ||
511 | /** | |
512 | * switchdev_port_obj_del - Delete port object | |
513 | * | |
514 | * @dev: port device | |
515 | * @id: object ID | |
516 | * @obj: object to delete | |
517 | * | |
518 | * rtnl_lock must be held and must not be in atomic section, | |
519 | * in case SWITCHDEV_F_DEFER flag is not set. | |
520 | */ | |
521 | int switchdev_port_obj_del(struct net_device *dev, | |
522 | const struct switchdev_obj *obj) | |
523 | { | |
524 | if (obj->flags & SWITCHDEV_F_DEFER) | |
525 | return switchdev_port_obj_del_defer(dev, obj); | |
526 | ASSERT_RTNL(); | |
527 | return switchdev_port_obj_del_now(dev, obj); | |
528 | } | |
491d0f15 SF |
529 | EXPORT_SYMBOL_GPL(switchdev_port_obj_del); |
530 | ||
45d4122c SS |
531 | /** |
532 | * switchdev_port_obj_dump - Dump port objects | |
533 | * | |
534 | * @dev: port device | |
25f07adc | 535 | * @id: object ID |
45d4122c | 536 | * @obj: object to dump |
25f07adc | 537 | * @cb: function to call with a filled object |
771acac2 JP |
538 | * |
539 | * rtnl_lock must be held. | |
45d4122c | 540 | */ |
9e8f4a54 | 541 | int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj, |
648b4a99 | 542 | switchdev_obj_dump_cb_t *cb) |
45d4122c SS |
543 | { |
544 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
545 | struct net_device *lower_dev; | |
546 | struct list_head *iter; | |
547 | int err = -EOPNOTSUPP; | |
548 | ||
771acac2 JP |
549 | ASSERT_RTNL(); |
550 | ||
45d4122c | 551 | if (ops && ops->switchdev_port_obj_dump) |
9e8f4a54 | 552 | return ops->switchdev_port_obj_dump(dev, obj, cb); |
45d4122c SS |
553 | |
554 | /* Switch device port(s) may be stacked under | |
555 | * bond/team/vlan dev, so recurse down to dump objects on | |
556 | * first port at bottom of stack. | |
557 | */ | |
558 | ||
559 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
9e8f4a54 | 560 | err = switchdev_port_obj_dump(lower_dev, obj, cb); |
45d4122c SS |
561 | break; |
562 | } | |
563 | ||
564 | return err; | |
565 | } | |
566 | EXPORT_SYMBOL_GPL(switchdev_port_obj_dump); | |
567 | ||
ebb9a03a JP |
568 | static DEFINE_MUTEX(switchdev_mutex); |
569 | static RAW_NOTIFIER_HEAD(switchdev_notif_chain); | |
03bf0c28 JP |
570 | |
571 | /** | |
ebb9a03a | 572 | * register_switchdev_notifier - Register notifier |
03bf0c28 JP |
573 | * @nb: notifier_block |
574 | * | |
575 | * Register switch device notifier. This should be used by code | |
576 | * which needs to monitor events happening in particular device. | |
577 | * Return values are same as for atomic_notifier_chain_register(). | |
578 | */ | |
ebb9a03a | 579 | int register_switchdev_notifier(struct notifier_block *nb) |
03bf0c28 JP |
580 | { |
581 | int err; | |
582 | ||
ebb9a03a JP |
583 | mutex_lock(&switchdev_mutex); |
584 | err = raw_notifier_chain_register(&switchdev_notif_chain, nb); | |
585 | mutex_unlock(&switchdev_mutex); | |
03bf0c28 JP |
586 | return err; |
587 | } | |
ebb9a03a | 588 | EXPORT_SYMBOL_GPL(register_switchdev_notifier); |
03bf0c28 JP |
589 | |
590 | /** | |
ebb9a03a | 591 | * unregister_switchdev_notifier - Unregister notifier |
03bf0c28 JP |
592 | * @nb: notifier_block |
593 | * | |
594 | * Unregister switch device notifier. | |
595 | * Return values are same as for atomic_notifier_chain_unregister(). | |
596 | */ | |
ebb9a03a | 597 | int unregister_switchdev_notifier(struct notifier_block *nb) |
03bf0c28 JP |
598 | { |
599 | int err; | |
600 | ||
ebb9a03a JP |
601 | mutex_lock(&switchdev_mutex); |
602 | err = raw_notifier_chain_unregister(&switchdev_notif_chain, nb); | |
603 | mutex_unlock(&switchdev_mutex); | |
03bf0c28 JP |
604 | return err; |
605 | } | |
ebb9a03a | 606 | EXPORT_SYMBOL_GPL(unregister_switchdev_notifier); |
03bf0c28 JP |
607 | |
608 | /** | |
ebb9a03a | 609 | * call_switchdev_notifiers - Call notifiers |
03bf0c28 JP |
610 | * @val: value passed unmodified to notifier function |
611 | * @dev: port device | |
612 | * @info: notifier information data | |
613 | * | |
614 | * Call all network notifier blocks. This should be called by driver | |
615 | * when it needs to propagate hardware event. | |
616 | * Return values are same as for atomic_notifier_call_chain(). | |
617 | */ | |
ebb9a03a JP |
618 | int call_switchdev_notifiers(unsigned long val, struct net_device *dev, |
619 | struct switchdev_notifier_info *info) | |
03bf0c28 JP |
620 | { |
621 | int err; | |
622 | ||
623 | info->dev = dev; | |
ebb9a03a JP |
624 | mutex_lock(&switchdev_mutex); |
625 | err = raw_notifier_call_chain(&switchdev_notif_chain, val, info); | |
626 | mutex_unlock(&switchdev_mutex); | |
03bf0c28 JP |
627 | return err; |
628 | } | |
ebb9a03a | 629 | EXPORT_SYMBOL_GPL(call_switchdev_notifiers); |
8a44dbb2 | 630 | |
7d4f8d87 | 631 | struct switchdev_vlan_dump { |
8f24f309 | 632 | struct switchdev_obj_port_vlan vlan; |
7d4f8d87 SF |
633 | struct sk_buff *skb; |
634 | u32 filter_mask; | |
635 | u16 flags; | |
636 | u16 begin; | |
637 | u16 end; | |
638 | }; | |
639 | ||
e23b002b | 640 | static int switchdev_port_vlan_dump_put(struct switchdev_vlan_dump *dump) |
7d4f8d87 SF |
641 | { |
642 | struct bridge_vlan_info vinfo; | |
643 | ||
644 | vinfo.flags = dump->flags; | |
645 | ||
646 | if (dump->begin == 0 && dump->end == 0) { | |
647 | return 0; | |
648 | } else if (dump->begin == dump->end) { | |
649 | vinfo.vid = dump->begin; | |
650 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
651 | sizeof(vinfo), &vinfo)) | |
652 | return -EMSGSIZE; | |
653 | } else { | |
654 | vinfo.vid = dump->begin; | |
655 | vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
656 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
657 | sizeof(vinfo), &vinfo)) | |
658 | return -EMSGSIZE; | |
659 | vinfo.vid = dump->end; | |
660 | vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
661 | vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_END; | |
662 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
663 | sizeof(vinfo), &vinfo)) | |
664 | return -EMSGSIZE; | |
665 | } | |
666 | ||
667 | return 0; | |
668 | } | |
669 | ||
648b4a99 | 670 | static int switchdev_port_vlan_dump_cb(struct switchdev_obj *obj) |
7d4f8d87 | 671 | { |
648b4a99 | 672 | struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); |
7d4f8d87 | 673 | struct switchdev_vlan_dump *dump = |
25f07adc | 674 | container_of(vlan, struct switchdev_vlan_dump, vlan); |
7d4f8d87 SF |
675 | int err = 0; |
676 | ||
677 | if (vlan->vid_begin > vlan->vid_end) | |
678 | return -EINVAL; | |
679 | ||
680 | if (dump->filter_mask & RTEXT_FILTER_BRVLAN) { | |
681 | dump->flags = vlan->flags; | |
682 | for (dump->begin = dump->end = vlan->vid_begin; | |
683 | dump->begin <= vlan->vid_end; | |
684 | dump->begin++, dump->end++) { | |
e23b002b | 685 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
686 | if (err) |
687 | return err; | |
688 | } | |
689 | } else if (dump->filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) { | |
690 | if (dump->begin > vlan->vid_begin && | |
691 | dump->begin >= vlan->vid_end) { | |
692 | if ((dump->begin - 1) == vlan->vid_end && | |
693 | dump->flags == vlan->flags) { | |
694 | /* prepend */ | |
695 | dump->begin = vlan->vid_begin; | |
696 | } else { | |
e23b002b | 697 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
698 | dump->flags = vlan->flags; |
699 | dump->begin = vlan->vid_begin; | |
700 | dump->end = vlan->vid_end; | |
701 | } | |
702 | } else if (dump->end <= vlan->vid_begin && | |
703 | dump->end < vlan->vid_end) { | |
704 | if ((dump->end + 1) == vlan->vid_begin && | |
705 | dump->flags == vlan->flags) { | |
706 | /* append */ | |
707 | dump->end = vlan->vid_end; | |
708 | } else { | |
e23b002b | 709 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
710 | dump->flags = vlan->flags; |
711 | dump->begin = vlan->vid_begin; | |
712 | dump->end = vlan->vid_end; | |
713 | } | |
714 | } else { | |
715 | err = -EINVAL; | |
716 | } | |
717 | } | |
718 | ||
719 | return err; | |
720 | } | |
721 | ||
722 | static int switchdev_port_vlan_fill(struct sk_buff *skb, struct net_device *dev, | |
723 | u32 filter_mask) | |
724 | { | |
725 | struct switchdev_vlan_dump dump = { | |
9e8f4a54 | 726 | .vlan.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
7d4f8d87 SF |
727 | .skb = skb, |
728 | .filter_mask = filter_mask, | |
729 | }; | |
730 | int err = 0; | |
731 | ||
732 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || | |
733 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { | |
9e8f4a54 | 734 | err = switchdev_port_obj_dump(dev, &dump.vlan.obj, |
25f07adc | 735 | switchdev_port_vlan_dump_cb); |
7d4f8d87 SF |
736 | if (err) |
737 | goto err_out; | |
738 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) | |
739 | /* last one */ | |
e23b002b | 740 | err = switchdev_port_vlan_dump_put(&dump); |
7d4f8d87 SF |
741 | } |
742 | ||
743 | err_out: | |
744 | return err == -EOPNOTSUPP ? 0 : err; | |
745 | } | |
746 | ||
8793d0a6 SF |
747 | /** |
748 | * switchdev_port_bridge_getlink - Get bridge port attributes | |
749 | * | |
750 | * @dev: port device | |
751 | * | |
752 | * Called for SELF on rtnl_bridge_getlink to get bridge port | |
753 | * attributes. | |
754 | */ | |
755 | int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, | |
756 | struct net_device *dev, u32 filter_mask, | |
757 | int nlflags) | |
758 | { | |
759 | struct switchdev_attr attr = { | |
1f868398 | 760 | .id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, |
8793d0a6 SF |
761 | }; |
762 | u16 mode = BRIDGE_MODE_UNDEF; | |
741af005 | 763 | u32 mask = BR_LEARNING | BR_LEARNING_SYNC | BR_FLOOD; |
8793d0a6 SF |
764 | int err; |
765 | ||
766 | err = switchdev_port_attr_get(dev, &attr); | |
5c8079d0 | 767 | if (err && err != -EOPNOTSUPP) |
8793d0a6 SF |
768 | return err; |
769 | ||
770 | return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, | |
7d4f8d87 SF |
771 | attr.u.brport_flags, mask, nlflags, |
772 | filter_mask, switchdev_port_vlan_fill); | |
8793d0a6 SF |
773 | } |
774 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_getlink); | |
775 | ||
47f8328b SF |
776 | static int switchdev_port_br_setflag(struct net_device *dev, |
777 | struct nlattr *nlattr, | |
778 | unsigned long brport_flag) | |
779 | { | |
780 | struct switchdev_attr attr = { | |
1f868398 | 781 | .id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, |
47f8328b SF |
782 | }; |
783 | u8 flag = nla_get_u8(nlattr); | |
784 | int err; | |
785 | ||
786 | err = switchdev_port_attr_get(dev, &attr); | |
787 | if (err) | |
788 | return err; | |
789 | ||
790 | if (flag) | |
42275bd8 | 791 | attr.u.brport_flags |= brport_flag; |
47f8328b | 792 | else |
42275bd8 | 793 | attr.u.brport_flags &= ~brport_flag; |
47f8328b SF |
794 | |
795 | return switchdev_port_attr_set(dev, &attr); | |
796 | } | |
797 | ||
798 | static const struct nla_policy | |
799 | switchdev_port_bridge_policy[IFLA_BRPORT_MAX + 1] = { | |
800 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, | |
801 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, | |
802 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, | |
803 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, | |
804 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, | |
805 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, | |
806 | [IFLA_BRPORT_FAST_LEAVE] = { .type = NLA_U8 }, | |
807 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, | |
808 | [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 }, | |
809 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, | |
810 | }; | |
811 | ||
812 | static int switchdev_port_br_setlink_protinfo(struct net_device *dev, | |
813 | struct nlattr *protinfo) | |
814 | { | |
815 | struct nlattr *attr; | |
816 | int rem; | |
817 | int err; | |
818 | ||
819 | err = nla_validate_nested(protinfo, IFLA_BRPORT_MAX, | |
820 | switchdev_port_bridge_policy); | |
821 | if (err) | |
822 | return err; | |
823 | ||
824 | nla_for_each_nested(attr, protinfo, rem) { | |
825 | switch (nla_type(attr)) { | |
826 | case IFLA_BRPORT_LEARNING: | |
827 | err = switchdev_port_br_setflag(dev, attr, | |
828 | BR_LEARNING); | |
829 | break; | |
830 | case IFLA_BRPORT_LEARNING_SYNC: | |
831 | err = switchdev_port_br_setflag(dev, attr, | |
832 | BR_LEARNING_SYNC); | |
833 | break; | |
741af005 IS |
834 | case IFLA_BRPORT_UNICAST_FLOOD: |
835 | err = switchdev_port_br_setflag(dev, attr, BR_FLOOD); | |
836 | break; | |
47f8328b SF |
837 | default: |
838 | err = -EOPNOTSUPP; | |
839 | break; | |
840 | } | |
841 | if (err) | |
842 | return err; | |
843 | } | |
844 | ||
845 | return 0; | |
846 | } | |
847 | ||
848 | static int switchdev_port_br_afspec(struct net_device *dev, | |
849 | struct nlattr *afspec, | |
850 | int (*f)(struct net_device *dev, | |
648b4a99 | 851 | const struct switchdev_obj *obj)) |
47f8328b SF |
852 | { |
853 | struct nlattr *attr; | |
854 | struct bridge_vlan_info *vinfo; | |
9e8f4a54 JP |
855 | struct switchdev_obj_port_vlan vlan = { |
856 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, | |
857 | }; | |
47f8328b SF |
858 | int rem; |
859 | int err; | |
860 | ||
861 | nla_for_each_nested(attr, afspec, rem) { | |
862 | if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO) | |
863 | continue; | |
864 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) | |
865 | return -EINVAL; | |
866 | vinfo = nla_data(attr); | |
87aaf2ca NA |
867 | if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK) |
868 | return -EINVAL; | |
ab069002 | 869 | vlan.flags = vinfo->flags; |
47f8328b | 870 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
ab069002 | 871 | if (vlan.vid_begin) |
47f8328b | 872 | return -EINVAL; |
ab069002 | 873 | vlan.vid_begin = vinfo->vid; |
cc02aa8e NA |
874 | /* don't allow range of pvids */ |
875 | if (vlan.flags & BRIDGE_VLAN_INFO_PVID) | |
876 | return -EINVAL; | |
47f8328b | 877 | } else if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END) { |
ab069002 | 878 | if (!vlan.vid_begin) |
47f8328b | 879 | return -EINVAL; |
ab069002 VD |
880 | vlan.vid_end = vinfo->vid; |
881 | if (vlan.vid_end <= vlan.vid_begin) | |
47f8328b | 882 | return -EINVAL; |
9e8f4a54 | 883 | err = f(dev, &vlan.obj); |
47f8328b SF |
884 | if (err) |
885 | return err; | |
3a7bde55 | 886 | vlan.vid_begin = 0; |
47f8328b | 887 | } else { |
ab069002 | 888 | if (vlan.vid_begin) |
47f8328b | 889 | return -EINVAL; |
ab069002 VD |
890 | vlan.vid_begin = vinfo->vid; |
891 | vlan.vid_end = vinfo->vid; | |
9e8f4a54 | 892 | err = f(dev, &vlan.obj); |
47f8328b SF |
893 | if (err) |
894 | return err; | |
3a7bde55 | 895 | vlan.vid_begin = 0; |
47f8328b SF |
896 | } |
897 | } | |
898 | ||
899 | return 0; | |
900 | } | |
901 | ||
8a44dbb2 | 902 | /** |
47f8328b | 903 | * switchdev_port_bridge_setlink - Set bridge port attributes |
8a44dbb2 RP |
904 | * |
905 | * @dev: port device | |
47f8328b SF |
906 | * @nlh: netlink header |
907 | * @flags: netlink flags | |
8a44dbb2 | 908 | * |
47f8328b SF |
909 | * Called for SELF on rtnl_bridge_setlink to set bridge port |
910 | * attributes. | |
8a44dbb2 | 911 | */ |
ebb9a03a JP |
912 | int switchdev_port_bridge_setlink(struct net_device *dev, |
913 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 | 914 | { |
47f8328b SF |
915 | struct nlattr *protinfo; |
916 | struct nlattr *afspec; | |
917 | int err = 0; | |
918 | ||
919 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), | |
920 | IFLA_PROTINFO); | |
921 | if (protinfo) { | |
922 | err = switchdev_port_br_setlink_protinfo(dev, protinfo); | |
923 | if (err) | |
924 | return err; | |
925 | } | |
8a44dbb2 | 926 | |
47f8328b SF |
927 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), |
928 | IFLA_AF_SPEC); | |
929 | if (afspec) | |
930 | err = switchdev_port_br_afspec(dev, afspec, | |
931 | switchdev_port_obj_add); | |
8a44dbb2 | 932 | |
47f8328b | 933 | return err; |
8a44dbb2 | 934 | } |
ebb9a03a | 935 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_setlink); |
8a44dbb2 RP |
936 | |
937 | /** | |
5c34e022 | 938 | * switchdev_port_bridge_dellink - Set bridge port attributes |
8a44dbb2 RP |
939 | * |
940 | * @dev: port device | |
5c34e022 SF |
941 | * @nlh: netlink header |
942 | * @flags: netlink flags | |
8a44dbb2 | 943 | * |
5c34e022 SF |
944 | * Called for SELF on rtnl_bridge_dellink to set bridge port |
945 | * attributes. | |
8a44dbb2 | 946 | */ |
ebb9a03a JP |
947 | int switchdev_port_bridge_dellink(struct net_device *dev, |
948 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 | 949 | { |
5c34e022 | 950 | struct nlattr *afspec; |
8a44dbb2 | 951 | |
5c34e022 SF |
952 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), |
953 | IFLA_AF_SPEC); | |
954 | if (afspec) | |
955 | return switchdev_port_br_afspec(dev, afspec, | |
956 | switchdev_port_obj_del); | |
8a44dbb2 | 957 | |
5c34e022 | 958 | return 0; |
8a44dbb2 | 959 | } |
ebb9a03a | 960 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_dellink); |
8a44dbb2 | 961 | |
45d4122c SS |
962 | /** |
963 | * switchdev_port_fdb_add - Add FDB (MAC/VLAN) entry to port | |
964 | * | |
965 | * @ndmsg: netlink hdr | |
966 | * @nlattr: netlink attributes | |
967 | * @dev: port device | |
968 | * @addr: MAC address to add | |
969 | * @vid: VLAN to add | |
970 | * | |
971 | * Add FDB entry to switch device. | |
972 | */ | |
973 | int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], | |
974 | struct net_device *dev, const unsigned char *addr, | |
975 | u16 vid, u16 nlm_flags) | |
976 | { | |
52ba57cf | 977 | struct switchdev_obj_port_fdb fdb = { |
9e8f4a54 | 978 | .obj.id = SWITCHDEV_OBJ_ID_PORT_FDB, |
ab069002 | 979 | .vid = vid, |
45d4122c SS |
980 | }; |
981 | ||
850d0cbc | 982 | ether_addr_copy(fdb.addr, addr); |
9e8f4a54 | 983 | return switchdev_port_obj_add(dev, &fdb.obj); |
45d4122c SS |
984 | } |
985 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_add); | |
986 | ||
987 | /** | |
988 | * switchdev_port_fdb_del - Delete FDB (MAC/VLAN) entry from port | |
989 | * | |
990 | * @ndmsg: netlink hdr | |
991 | * @nlattr: netlink attributes | |
992 | * @dev: port device | |
993 | * @addr: MAC address to delete | |
994 | * @vid: VLAN to delete | |
995 | * | |
996 | * Delete FDB entry from switch device. | |
997 | */ | |
998 | int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], | |
999 | struct net_device *dev, const unsigned char *addr, | |
1000 | u16 vid) | |
1001 | { | |
52ba57cf | 1002 | struct switchdev_obj_port_fdb fdb = { |
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 SS |
1029 | |
1030 | if (dump->idx < dump->cb->args[0]) | |
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 | * | |
1073 | * Delete FDB entry from switch device. | |
1074 | */ | |
1075 | int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
1076 | struct net_device *dev, | |
1077 | struct net_device *filter_dev, int idx) | |
1078 | { | |
1079 | struct switchdev_fdb_dump dump = { | |
9e8f4a54 | 1080 | .fdb.obj.id = SWITCHDEV_OBJ_ID_PORT_FDB, |
e02a06b2 | 1081 | .dev = dev, |
45d4122c SS |
1082 | .skb = skb, |
1083 | .cb = cb, | |
45d4122c SS |
1084 | .idx = idx, |
1085 | }; | |
45d4122c | 1086 | |
9e8f4a54 | 1087 | switchdev_port_obj_dump(dev, &dump.fdb.obj, switchdev_port_fdb_dump_cb); |
45d4122c SS |
1088 | return dump.idx; |
1089 | } | |
1090 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump); | |
1091 | ||
ebb9a03a | 1092 | static struct net_device *switchdev_get_lowest_dev(struct net_device *dev) |
b5d6fbde | 1093 | { |
9d47c0a2 | 1094 | const struct switchdev_ops *ops = dev->switchdev_ops; |
b5d6fbde SF |
1095 | struct net_device *lower_dev; |
1096 | struct net_device *port_dev; | |
1097 | struct list_head *iter; | |
1098 | ||
1099 | /* Recusively search down until we find a sw port dev. | |
f8e20a9f | 1100 | * (A sw port dev supports switchdev_port_attr_get). |
b5d6fbde SF |
1101 | */ |
1102 | ||
f8e20a9f | 1103 | if (ops && ops->switchdev_port_attr_get) |
b5d6fbde SF |
1104 | return dev; |
1105 | ||
1106 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
ebb9a03a | 1107 | port_dev = switchdev_get_lowest_dev(lower_dev); |
b5d6fbde SF |
1108 | if (port_dev) |
1109 | return port_dev; | |
1110 | } | |
1111 | ||
1112 | return NULL; | |
1113 | } | |
1114 | ||
ebb9a03a | 1115 | static struct net_device *switchdev_get_dev_by_nhs(struct fib_info *fi) |
b5d6fbde | 1116 | { |
f8e20a9f | 1117 | struct switchdev_attr attr = { |
1f868398 | 1118 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
f8e20a9f SF |
1119 | }; |
1120 | struct switchdev_attr prev_attr; | |
b5d6fbde SF |
1121 | struct net_device *dev = NULL; |
1122 | int nhsel; | |
1123 | ||
771acac2 JP |
1124 | ASSERT_RTNL(); |
1125 | ||
b5d6fbde SF |
1126 | /* For this route, all nexthop devs must be on the same switch. */ |
1127 | ||
1128 | for (nhsel = 0; nhsel < fi->fib_nhs; nhsel++) { | |
1129 | const struct fib_nh *nh = &fi->fib_nh[nhsel]; | |
1130 | ||
1131 | if (!nh->nh_dev) | |
1132 | return NULL; | |
1133 | ||
ebb9a03a | 1134 | dev = switchdev_get_lowest_dev(nh->nh_dev); |
b5d6fbde SF |
1135 | if (!dev) |
1136 | return NULL; | |
1137 | ||
f8e20a9f | 1138 | if (switchdev_port_attr_get(dev, &attr)) |
b5d6fbde SF |
1139 | return NULL; |
1140 | ||
d754f98b SF |
1141 | if (nhsel > 0 && |
1142 | !netdev_phys_item_id_same(&prev_attr.u.ppid, &attr.u.ppid)) | |
b5d6fbde | 1143 | return NULL; |
b5d6fbde | 1144 | |
f8e20a9f | 1145 | prev_attr = attr; |
b5d6fbde SF |
1146 | } |
1147 | ||
1148 | return dev; | |
1149 | } | |
1150 | ||
5e8d9049 | 1151 | /** |
7616dcbb | 1152 | * switchdev_fib_ipv4_add - Add/modify switch IPv4 route entry |
5e8d9049 SF |
1153 | * |
1154 | * @dst: route's IPv4 destination address | |
1155 | * @dst_len: destination address length (prefix length) | |
1156 | * @fi: route FIB info structure | |
1157 | * @tos: route TOS | |
1158 | * @type: route type | |
f8f21471 | 1159 | * @nlflags: netlink flags passed in (NLM_F_*) |
5e8d9049 SF |
1160 | * @tb_id: route table ID |
1161 | * | |
7616dcbb | 1162 | * Add/modify switch IPv4 route entry. |
5e8d9049 | 1163 | */ |
ebb9a03a JP |
1164 | int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi, |
1165 | u8 tos, u8 type, u32 nlflags, u32 tb_id) | |
5e8d9049 | 1166 | { |
ab069002 | 1167 | struct switchdev_obj_ipv4_fib ipv4_fib = { |
9e8f4a54 | 1168 | .obj.id = SWITCHDEV_OBJ_ID_IPV4_FIB, |
ab069002 VD |
1169 | .dst = dst, |
1170 | .dst_len = dst_len, | |
ab069002 VD |
1171 | .tos = tos, |
1172 | .type = type, | |
1173 | .nlflags = nlflags, | |
1174 | .tb_id = tb_id, | |
58c2cb16 | 1175 | }; |
b5d6fbde | 1176 | struct net_device *dev; |
b5d6fbde SF |
1177 | int err = 0; |
1178 | ||
850d0cbc JP |
1179 | memcpy(&ipv4_fib.fi, fi, sizeof(ipv4_fib.fi)); |
1180 | ||
8e05fd71 SF |
1181 | /* Don't offload route if using custom ip rules or if |
1182 | * IPv4 FIB offloading has been disabled completely. | |
1183 | */ | |
1184 | ||
e1315db1 SF |
1185 | #ifdef CONFIG_IP_MULTIPLE_TABLES |
1186 | if (fi->fib_net->ipv4.fib_has_custom_rules) | |
1187 | return 0; | |
1188 | #endif | |
1189 | ||
1190 | if (fi->fib_net->ipv4.fib_offload_disabled) | |
104616e7 SF |
1191 | return 0; |
1192 | ||
ebb9a03a | 1193 | dev = switchdev_get_dev_by_nhs(fi); |
b5d6fbde SF |
1194 | if (!dev) |
1195 | return 0; | |
58c2cb16 | 1196 | |
9e8f4a54 | 1197 | err = switchdev_port_obj_add(dev, &ipv4_fib.obj); |
58c2cb16 | 1198 | if (!err) |
36583eb5 | 1199 | fi->fib_flags |= RTNH_F_OFFLOAD; |
b5d6fbde | 1200 | |
af201f72 | 1201 | return err == -EOPNOTSUPP ? 0 : err; |
5e8d9049 | 1202 | } |
ebb9a03a | 1203 | EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_add); |
5e8d9049 SF |
1204 | |
1205 | /** | |
ebb9a03a | 1206 | * switchdev_fib_ipv4_del - Delete IPv4 route entry from switch |
5e8d9049 SF |
1207 | * |
1208 | * @dst: route's IPv4 destination address | |
1209 | * @dst_len: destination address length (prefix length) | |
1210 | * @fi: route FIB info structure | |
1211 | * @tos: route TOS | |
1212 | * @type: route type | |
1213 | * @tb_id: route table ID | |
1214 | * | |
1215 | * Delete IPv4 route entry from switch device. | |
1216 | */ | |
ebb9a03a JP |
1217 | int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi, |
1218 | u8 tos, u8 type, u32 tb_id) | |
5e8d9049 | 1219 | { |
ab069002 | 1220 | struct switchdev_obj_ipv4_fib ipv4_fib = { |
9e8f4a54 | 1221 | .obj.id = SWITCHDEV_OBJ_ID_IPV4_FIB, |
ab069002 VD |
1222 | .dst = dst, |
1223 | .dst_len = dst_len, | |
ab069002 VD |
1224 | .tos = tos, |
1225 | .type = type, | |
1226 | .nlflags = 0, | |
1227 | .tb_id = tb_id, | |
58c2cb16 | 1228 | }; |
b5d6fbde | 1229 | struct net_device *dev; |
b5d6fbde SF |
1230 | int err = 0; |
1231 | ||
850d0cbc JP |
1232 | memcpy(&ipv4_fib.fi, fi, sizeof(ipv4_fib.fi)); |
1233 | ||
eea39946 | 1234 | if (!(fi->fib_flags & RTNH_F_OFFLOAD)) |
b5d6fbde SF |
1235 | return 0; |
1236 | ||
ebb9a03a | 1237 | dev = switchdev_get_dev_by_nhs(fi); |
b5d6fbde SF |
1238 | if (!dev) |
1239 | return 0; | |
b5d6fbde | 1240 | |
9e8f4a54 | 1241 | err = switchdev_port_obj_del(dev, &ipv4_fib.obj); |
58c2cb16 | 1242 | if (!err) |
36583eb5 | 1243 | fi->fib_flags &= ~RTNH_F_OFFLOAD; |
b5d6fbde | 1244 | |
af201f72 | 1245 | return err == -EOPNOTSUPP ? 0 : err; |
5e8d9049 | 1246 | } |
ebb9a03a | 1247 | EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_del); |
8e05fd71 SF |
1248 | |
1249 | /** | |
ebb9a03a | 1250 | * switchdev_fib_ipv4_abort - Abort an IPv4 FIB operation |
8e05fd71 SF |
1251 | * |
1252 | * @fi: route FIB info structure | |
1253 | */ | |
ebb9a03a | 1254 | void switchdev_fib_ipv4_abort(struct fib_info *fi) |
8e05fd71 SF |
1255 | { |
1256 | /* There was a problem installing this route to the offload | |
1257 | * device. For now, until we come up with more refined | |
1258 | * policy handling, abruptly end IPv4 fib offloading for | |
1259 | * for entire net by flushing offload device(s) of all | |
1260 | * IPv4 routes, and mark IPv4 fib offloading broken from | |
1261 | * this point forward. | |
1262 | */ | |
1263 | ||
1264 | fib_flush_external(fi->fib_net); | |
1265 | fi->fib_net->ipv4.fib_offload_disabled = true; | |
1266 | } | |
ebb9a03a | 1267 | EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_abort); |
1a3b2ec9 SF |
1268 | |
1269 | static bool switchdev_port_same_parent_id(struct net_device *a, | |
1270 | struct net_device *b) | |
1271 | { | |
1272 | struct switchdev_attr a_attr = { | |
1f868398 | 1273 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
1a3b2ec9 SF |
1274 | .flags = SWITCHDEV_F_NO_RECURSE, |
1275 | }; | |
1276 | struct switchdev_attr b_attr = { | |
1f868398 | 1277 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
1a3b2ec9 SF |
1278 | .flags = SWITCHDEV_F_NO_RECURSE, |
1279 | }; | |
1280 | ||
1281 | if (switchdev_port_attr_get(a, &a_attr) || | |
1282 | switchdev_port_attr_get(b, &b_attr)) | |
1283 | return false; | |
1284 | ||
1285 | return netdev_phys_item_id_same(&a_attr.u.ppid, &b_attr.u.ppid); | |
1286 | } | |
1287 | ||
1288 | static u32 switchdev_port_fwd_mark_get(struct net_device *dev, | |
1289 | struct net_device *group_dev) | |
1290 | { | |
1291 | struct net_device *lower_dev; | |
1292 | struct list_head *iter; | |
1293 | ||
1294 | netdev_for_each_lower_dev(group_dev, lower_dev, iter) { | |
1295 | if (lower_dev == dev) | |
1296 | continue; | |
1297 | if (switchdev_port_same_parent_id(dev, lower_dev)) | |
1298 | return lower_dev->offload_fwd_mark; | |
1299 | return switchdev_port_fwd_mark_get(dev, lower_dev); | |
1300 | } | |
1301 | ||
1302 | return dev->ifindex; | |
1303 | } | |
1304 | ||
1305 | static void switchdev_port_fwd_mark_reset(struct net_device *group_dev, | |
1306 | u32 old_mark, u32 *reset_mark) | |
1307 | { | |
1308 | struct net_device *lower_dev; | |
1309 | struct list_head *iter; | |
1310 | ||
1311 | netdev_for_each_lower_dev(group_dev, lower_dev, iter) { | |
1312 | if (lower_dev->offload_fwd_mark == old_mark) { | |
1313 | if (!*reset_mark) | |
1314 | *reset_mark = lower_dev->ifindex; | |
1315 | lower_dev->offload_fwd_mark = *reset_mark; | |
1316 | } | |
1317 | switchdev_port_fwd_mark_reset(lower_dev, old_mark, reset_mark); | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | /** | |
1322 | * switchdev_port_fwd_mark_set - Set port offload forwarding mark | |
1323 | * | |
1324 | * @dev: port device | |
1325 | * @group_dev: containing device | |
1326 | * @joining: true if dev is joining group; false if leaving group | |
1327 | * | |
1328 | * An ungrouped port's offload mark is just its ifindex. A grouped | |
1329 | * port's (member of a bridge, for example) offload mark is the ifindex | |
1330 | * of one of the ports in the group with the same parent (switch) ID. | |
1331 | * Ports on the same device in the same group will have the same mark. | |
1332 | * | |
1333 | * Example: | |
1334 | * | |
1335 | * br0 ifindex=9 | |
1336 | * sw1p1 ifindex=2 mark=2 | |
1337 | * sw1p2 ifindex=3 mark=2 | |
1338 | * sw2p1 ifindex=4 mark=5 | |
1339 | * sw2p2 ifindex=5 mark=5 | |
1340 | * | |
1341 | * If sw2p2 leaves the bridge, we'll have: | |
1342 | * | |
1343 | * br0 ifindex=9 | |
1344 | * sw1p1 ifindex=2 mark=2 | |
1345 | * sw1p2 ifindex=3 mark=2 | |
1346 | * sw2p1 ifindex=4 mark=4 | |
1347 | * sw2p2 ifindex=5 mark=5 | |
1348 | */ | |
1349 | void switchdev_port_fwd_mark_set(struct net_device *dev, | |
1350 | struct net_device *group_dev, | |
1351 | bool joining) | |
1352 | { | |
1353 | u32 mark = dev->ifindex; | |
1354 | u32 reset_mark = 0; | |
1355 | ||
771acac2 JP |
1356 | if (group_dev) { |
1357 | ASSERT_RTNL(); | |
1358 | if (joining) | |
1359 | mark = switchdev_port_fwd_mark_get(dev, group_dev); | |
1360 | else if (dev->offload_fwd_mark == mark) | |
1a3b2ec9 SF |
1361 | /* Ohoh, this port was the mark reference port, |
1362 | * but it's leaving the group, so reset the | |
1363 | * mark for the remaining ports in the group. | |
1364 | */ | |
1365 | switchdev_port_fwd_mark_reset(group_dev, mark, | |
1366 | &reset_mark); | |
1367 | } | |
1368 | ||
1369 | dev->offload_fwd_mark = mark; | |
1370 | } | |
1371 | EXPORT_SYMBOL_GPL(switchdev_port_fwd_mark_set); |