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> |
47f8328b | 18 | #include <linux/if_bridge.h> |
7ea6eb3f | 19 | #include <linux/list.h> |
5e8d9049 | 20 | #include <net/ip_fib.h> |
007f790c JP |
21 | #include <net/switchdev.h> |
22 | ||
7ea6eb3f JP |
23 | /** |
24 | * switchdev_trans_item_enqueue - Enqueue data item to transaction queue | |
25 | * | |
26 | * @trans: transaction | |
27 | * @data: pointer to data being queued | |
28 | * @destructor: data destructor | |
29 | * @tritem: transaction item being queued | |
30 | * | |
31 | * Enqeueue data item to transaction queue. tritem is typically placed in | |
32 | * cointainter pointed at by data pointer. Destructor is called on | |
33 | * transaction abort and after successful commit phase in case | |
34 | * the caller did not dequeue the item before. | |
35 | */ | |
36 | void switchdev_trans_item_enqueue(struct switchdev_trans *trans, | |
37 | void *data, void (*destructor)(void const *), | |
38 | struct switchdev_trans_item *tritem) | |
39 | { | |
40 | tritem->data = data; | |
41 | tritem->destructor = destructor; | |
42 | list_add_tail(&tritem->list, &trans->item_list); | |
43 | } | |
44 | EXPORT_SYMBOL_GPL(switchdev_trans_item_enqueue); | |
45 | ||
46 | static struct switchdev_trans_item * | |
47 | __switchdev_trans_item_dequeue(struct switchdev_trans *trans) | |
48 | { | |
49 | struct switchdev_trans_item *tritem; | |
50 | ||
51 | if (list_empty(&trans->item_list)) | |
52 | return NULL; | |
53 | tritem = list_first_entry(&trans->item_list, | |
54 | struct switchdev_trans_item, list); | |
55 | list_del(&tritem->list); | |
56 | return tritem; | |
57 | } | |
58 | ||
59 | /** | |
60 | * switchdev_trans_item_dequeue - Dequeue data item from transaction queue | |
61 | * | |
62 | * @trans: transaction | |
63 | */ | |
64 | void *switchdev_trans_item_dequeue(struct switchdev_trans *trans) | |
65 | { | |
66 | struct switchdev_trans_item *tritem; | |
67 | ||
68 | tritem = __switchdev_trans_item_dequeue(trans); | |
69 | BUG_ON(!tritem); | |
70 | return tritem->data; | |
71 | } | |
72 | EXPORT_SYMBOL_GPL(switchdev_trans_item_dequeue); | |
73 | ||
74 | static void switchdev_trans_init(struct switchdev_trans *trans) | |
75 | { | |
76 | INIT_LIST_HEAD(&trans->item_list); | |
77 | } | |
78 | ||
79 | static void switchdev_trans_items_destroy(struct switchdev_trans *trans) | |
80 | { | |
81 | struct switchdev_trans_item *tritem; | |
82 | ||
83 | while ((tritem = __switchdev_trans_item_dequeue(trans))) | |
84 | tritem->destructor(tritem->data); | |
85 | } | |
86 | ||
87 | static void switchdev_trans_items_warn_destroy(struct net_device *dev, | |
88 | struct switchdev_trans *trans) | |
89 | { | |
90 | WARN(!list_empty(&trans->item_list), "%s: transaction item queue is not empty.\n", | |
91 | dev->name); | |
92 | switchdev_trans_items_destroy(trans); | |
93 | } | |
94 | ||
3094333d SF |
95 | /** |
96 | * switchdev_port_attr_get - Get port attribute | |
97 | * | |
98 | * @dev: port device | |
99 | * @attr: attribute to get | |
100 | */ | |
101 | int switchdev_port_attr_get(struct net_device *dev, struct switchdev_attr *attr) | |
102 | { | |
103 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
104 | struct net_device *lower_dev; | |
105 | struct list_head *iter; | |
106 | struct switchdev_attr first = { | |
107 | .id = SWITCHDEV_ATTR_UNDEFINED | |
108 | }; | |
109 | int err = -EOPNOTSUPP; | |
110 | ||
111 | if (ops && ops->switchdev_port_attr_get) | |
112 | return ops->switchdev_port_attr_get(dev, attr); | |
113 | ||
114 | if (attr->flags & SWITCHDEV_F_NO_RECURSE) | |
115 | return err; | |
116 | ||
117 | /* Switch device port(s) may be stacked under | |
118 | * bond/team/vlan dev, so recurse down to get attr on | |
119 | * each port. Return -ENODATA if attr values don't | |
120 | * compare across ports. | |
121 | */ | |
122 | ||
123 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
124 | err = switchdev_port_attr_get(lower_dev, attr); | |
125 | if (err) | |
126 | break; | |
127 | if (first.id == SWITCHDEV_ATTR_UNDEFINED) | |
128 | first = *attr; | |
129 | else if (memcmp(&first, attr, sizeof(*attr))) | |
130 | return -ENODATA; | |
131 | } | |
132 | ||
133 | return err; | |
134 | } | |
135 | EXPORT_SYMBOL_GPL(switchdev_port_attr_get); | |
136 | ||
137 | static int __switchdev_port_attr_set(struct net_device *dev, | |
7ea6eb3f JP |
138 | struct switchdev_attr *attr, |
139 | struct switchdev_trans *trans) | |
3094333d SF |
140 | { |
141 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
142 | struct net_device *lower_dev; | |
143 | struct list_head *iter; | |
144 | int err = -EOPNOTSUPP; | |
145 | ||
146 | if (ops && ops->switchdev_port_attr_set) | |
7ea6eb3f | 147 | return ops->switchdev_port_attr_set(dev, attr, trans); |
3094333d SF |
148 | |
149 | if (attr->flags & SWITCHDEV_F_NO_RECURSE) | |
150 | return err; | |
151 | ||
152 | /* Switch device port(s) may be stacked under | |
153 | * bond/team/vlan dev, so recurse down to set attr on | |
154 | * each port. | |
155 | */ | |
156 | ||
157 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
7ea6eb3f | 158 | err = __switchdev_port_attr_set(lower_dev, attr, trans); |
3094333d SF |
159 | if (err) |
160 | break; | |
161 | } | |
162 | ||
163 | return err; | |
164 | } | |
165 | ||
166 | struct switchdev_attr_set_work { | |
167 | struct work_struct work; | |
168 | struct net_device *dev; | |
169 | struct switchdev_attr attr; | |
170 | }; | |
171 | ||
172 | static void switchdev_port_attr_set_work(struct work_struct *work) | |
173 | { | |
174 | struct switchdev_attr_set_work *asw = | |
175 | container_of(work, struct switchdev_attr_set_work, work); | |
176 | int err; | |
177 | ||
178 | rtnl_lock(); | |
179 | err = switchdev_port_attr_set(asw->dev, &asw->attr); | |
57225e77 SF |
180 | if (err && err != -EOPNOTSUPP) |
181 | netdev_err(asw->dev, "failed (err=%d) to set attribute (id=%d)\n", | |
182 | err, asw->attr.id); | |
3094333d SF |
183 | rtnl_unlock(); |
184 | ||
185 | dev_put(asw->dev); | |
186 | kfree(work); | |
187 | } | |
188 | ||
189 | static int switchdev_port_attr_set_defer(struct net_device *dev, | |
190 | struct switchdev_attr *attr) | |
191 | { | |
192 | struct switchdev_attr_set_work *asw; | |
193 | ||
194 | asw = kmalloc(sizeof(*asw), GFP_ATOMIC); | |
195 | if (!asw) | |
196 | return -ENOMEM; | |
197 | ||
198 | INIT_WORK(&asw->work, switchdev_port_attr_set_work); | |
199 | ||
200 | dev_hold(dev); | |
201 | asw->dev = dev; | |
202 | memcpy(&asw->attr, attr, sizeof(asw->attr)); | |
203 | ||
204 | schedule_work(&asw->work); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | /** | |
210 | * switchdev_port_attr_set - Set port attribute | |
211 | * | |
212 | * @dev: port device | |
213 | * @attr: attribute to set | |
214 | * | |
215 | * Use a 2-phase prepare-commit transaction model to ensure | |
216 | * system is not left in a partially updated state due to | |
217 | * failure from driver/device. | |
218 | */ | |
219 | int switchdev_port_attr_set(struct net_device *dev, struct switchdev_attr *attr) | |
220 | { | |
7ea6eb3f | 221 | struct switchdev_trans trans; |
3094333d SF |
222 | int err; |
223 | ||
224 | if (!rtnl_is_locked()) { | |
225 | /* Running prepare-commit transaction across stacked | |
226 | * devices requires nothing moves, so if rtnl_lock is | |
227 | * not held, schedule a worker thread to hold rtnl_lock | |
228 | * while setting attr. | |
229 | */ | |
230 | ||
231 | return switchdev_port_attr_set_defer(dev, attr); | |
232 | } | |
233 | ||
7ea6eb3f JP |
234 | switchdev_trans_init(&trans); |
235 | ||
3094333d SF |
236 | /* Phase I: prepare for attr set. Driver/device should fail |
237 | * here if there are going to be issues in the commit phase, | |
238 | * such as lack of resources or support. The driver/device | |
239 | * should reserve resources needed for the commit phase here, | |
240 | * but should not commit the attr. | |
241 | */ | |
242 | ||
f623ab7f | 243 | trans.ph_prepare = true; |
7ea6eb3f | 244 | err = __switchdev_port_attr_set(dev, attr, &trans); |
3094333d SF |
245 | if (err) { |
246 | /* Prepare phase failed: abort the transaction. Any | |
247 | * resources reserved in the prepare phase are | |
248 | * released. | |
249 | */ | |
250 | ||
9f6467cf | 251 | if (err != -EOPNOTSUPP) |
7ea6eb3f | 252 | switchdev_trans_items_destroy(&trans); |
3094333d SF |
253 | |
254 | return err; | |
255 | } | |
256 | ||
257 | /* Phase II: commit attr set. This cannot fail as a fault | |
258 | * of driver/device. If it does, it's a bug in the driver/device | |
259 | * because the driver said everythings was OK in phase I. | |
260 | */ | |
261 | ||
f623ab7f | 262 | trans.ph_prepare = false; |
7ea6eb3f | 263 | err = __switchdev_port_attr_set(dev, attr, &trans); |
e9fdaec0 SF |
264 | WARN(err, "%s: Commit of attribute (id=%d) failed.\n", |
265 | dev->name, attr->id); | |
7ea6eb3f | 266 | switchdev_trans_items_warn_destroy(dev, &trans); |
3094333d SF |
267 | |
268 | return err; | |
269 | } | |
270 | EXPORT_SYMBOL_GPL(switchdev_port_attr_set); | |
271 | ||
22c1f67e | 272 | static int __switchdev_port_obj_add(struct net_device *dev, |
ab069002 | 273 | enum switchdev_obj_id id, const void *obj, |
7ea6eb3f | 274 | struct switchdev_trans *trans) |
491d0f15 SF |
275 | { |
276 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
277 | struct net_device *lower_dev; | |
278 | struct list_head *iter; | |
279 | int err = -EOPNOTSUPP; | |
280 | ||
281 | if (ops && ops->switchdev_port_obj_add) | |
ab069002 | 282 | return ops->switchdev_port_obj_add(dev, id, obj, trans); |
491d0f15 SF |
283 | |
284 | /* Switch device port(s) may be stacked under | |
285 | * bond/team/vlan dev, so recurse down to add object on | |
286 | * each port. | |
287 | */ | |
288 | ||
289 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
ab069002 | 290 | err = __switchdev_port_obj_add(lower_dev, id, obj, trans); |
491d0f15 SF |
291 | if (err) |
292 | break; | |
293 | } | |
294 | ||
295 | return err; | |
296 | } | |
297 | ||
298 | /** | |
299 | * switchdev_port_obj_add - Add port object | |
300 | * | |
301 | * @dev: port device | |
ab069002 | 302 | * @id: object ID |
491d0f15 SF |
303 | * @obj: object to add |
304 | * | |
305 | * Use a 2-phase prepare-commit transaction model to ensure | |
306 | * system is not left in a partially updated state due to | |
307 | * failure from driver/device. | |
308 | * | |
309 | * rtnl_lock must be held. | |
310 | */ | |
ab069002 VD |
311 | int switchdev_port_obj_add(struct net_device *dev, enum switchdev_obj_id id, |
312 | const void *obj) | |
491d0f15 | 313 | { |
7ea6eb3f | 314 | struct switchdev_trans trans; |
491d0f15 SF |
315 | int err; |
316 | ||
317 | ASSERT_RTNL(); | |
318 | ||
7ea6eb3f JP |
319 | switchdev_trans_init(&trans); |
320 | ||
491d0f15 SF |
321 | /* Phase I: prepare for obj add. Driver/device should fail |
322 | * here if there are going to be issues in the commit phase, | |
323 | * such as lack of resources or support. The driver/device | |
324 | * should reserve resources needed for the commit phase here, | |
325 | * but should not commit the obj. | |
326 | */ | |
327 | ||
f623ab7f | 328 | trans.ph_prepare = true; |
ab069002 | 329 | err = __switchdev_port_obj_add(dev, id, obj, &trans); |
491d0f15 SF |
330 | if (err) { |
331 | /* Prepare phase failed: abort the transaction. Any | |
332 | * resources reserved in the prepare phase are | |
333 | * released. | |
334 | */ | |
335 | ||
9f6467cf | 336 | if (err != -EOPNOTSUPP) |
7ea6eb3f | 337 | switchdev_trans_items_destroy(&trans); |
491d0f15 SF |
338 | |
339 | return err; | |
340 | } | |
341 | ||
342 | /* Phase II: commit obj add. This cannot fail as a fault | |
343 | * of driver/device. If it does, it's a bug in the driver/device | |
344 | * because the driver said everythings was OK in phase I. | |
345 | */ | |
346 | ||
f623ab7f | 347 | trans.ph_prepare = false; |
ab069002 VD |
348 | err = __switchdev_port_obj_add(dev, id, obj, &trans); |
349 | WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, id); | |
7ea6eb3f | 350 | switchdev_trans_items_warn_destroy(dev, &trans); |
491d0f15 SF |
351 | |
352 | return err; | |
353 | } | |
354 | EXPORT_SYMBOL_GPL(switchdev_port_obj_add); | |
355 | ||
356 | /** | |
357 | * switchdev_port_obj_del - Delete port object | |
358 | * | |
359 | * @dev: port device | |
ab069002 | 360 | * @id: object ID |
491d0f15 SF |
361 | * @obj: object to delete |
362 | */ | |
ab069002 VD |
363 | int switchdev_port_obj_del(struct net_device *dev, enum switchdev_obj_id id, |
364 | const void *obj) | |
491d0f15 SF |
365 | { |
366 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
367 | struct net_device *lower_dev; | |
368 | struct list_head *iter; | |
369 | int err = -EOPNOTSUPP; | |
370 | ||
371 | if (ops && ops->switchdev_port_obj_del) | |
ab069002 | 372 | return ops->switchdev_port_obj_del(dev, id, obj); |
491d0f15 SF |
373 | |
374 | /* Switch device port(s) may be stacked under | |
375 | * bond/team/vlan dev, so recurse down to delete object on | |
376 | * each port. | |
377 | */ | |
378 | ||
379 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
ab069002 | 380 | err = switchdev_port_obj_del(lower_dev, id, obj); |
491d0f15 SF |
381 | if (err) |
382 | break; | |
383 | } | |
384 | ||
385 | return err; | |
386 | } | |
387 | EXPORT_SYMBOL_GPL(switchdev_port_obj_del); | |
388 | ||
45d4122c SS |
389 | /** |
390 | * switchdev_port_obj_dump - Dump port objects | |
391 | * | |
392 | * @dev: port device | |
25f07adc | 393 | * @id: object ID |
45d4122c | 394 | * @obj: object to dump |
25f07adc | 395 | * @cb: function to call with a filled object |
45d4122c | 396 | */ |
25f07adc VD |
397 | int switchdev_port_obj_dump(struct net_device *dev, enum switchdev_obj_id id, |
398 | void *obj, int (*cb)(void *obj)) | |
45d4122c SS |
399 | { |
400 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
401 | struct net_device *lower_dev; | |
402 | struct list_head *iter; | |
403 | int err = -EOPNOTSUPP; | |
404 | ||
405 | if (ops && ops->switchdev_port_obj_dump) | |
25f07adc | 406 | return ops->switchdev_port_obj_dump(dev, id, obj, cb); |
45d4122c SS |
407 | |
408 | /* Switch device port(s) may be stacked under | |
409 | * bond/team/vlan dev, so recurse down to dump objects on | |
410 | * first port at bottom of stack. | |
411 | */ | |
412 | ||
413 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
25f07adc | 414 | err = switchdev_port_obj_dump(lower_dev, id, obj, cb); |
45d4122c SS |
415 | break; |
416 | } | |
417 | ||
418 | return err; | |
419 | } | |
420 | EXPORT_SYMBOL_GPL(switchdev_port_obj_dump); | |
421 | ||
ebb9a03a JP |
422 | static DEFINE_MUTEX(switchdev_mutex); |
423 | static RAW_NOTIFIER_HEAD(switchdev_notif_chain); | |
03bf0c28 JP |
424 | |
425 | /** | |
ebb9a03a | 426 | * register_switchdev_notifier - Register notifier |
03bf0c28 JP |
427 | * @nb: notifier_block |
428 | * | |
429 | * Register switch device notifier. This should be used by code | |
430 | * which needs to monitor events happening in particular device. | |
431 | * Return values are same as for atomic_notifier_chain_register(). | |
432 | */ | |
ebb9a03a | 433 | int register_switchdev_notifier(struct notifier_block *nb) |
03bf0c28 JP |
434 | { |
435 | int err; | |
436 | ||
ebb9a03a JP |
437 | mutex_lock(&switchdev_mutex); |
438 | err = raw_notifier_chain_register(&switchdev_notif_chain, nb); | |
439 | mutex_unlock(&switchdev_mutex); | |
03bf0c28 JP |
440 | return err; |
441 | } | |
ebb9a03a | 442 | EXPORT_SYMBOL_GPL(register_switchdev_notifier); |
03bf0c28 JP |
443 | |
444 | /** | |
ebb9a03a | 445 | * unregister_switchdev_notifier - Unregister notifier |
03bf0c28 JP |
446 | * @nb: notifier_block |
447 | * | |
448 | * Unregister switch device notifier. | |
449 | * Return values are same as for atomic_notifier_chain_unregister(). | |
450 | */ | |
ebb9a03a | 451 | int unregister_switchdev_notifier(struct notifier_block *nb) |
03bf0c28 JP |
452 | { |
453 | int err; | |
454 | ||
ebb9a03a JP |
455 | mutex_lock(&switchdev_mutex); |
456 | err = raw_notifier_chain_unregister(&switchdev_notif_chain, nb); | |
457 | mutex_unlock(&switchdev_mutex); | |
03bf0c28 JP |
458 | return err; |
459 | } | |
ebb9a03a | 460 | EXPORT_SYMBOL_GPL(unregister_switchdev_notifier); |
03bf0c28 JP |
461 | |
462 | /** | |
ebb9a03a | 463 | * call_switchdev_notifiers - Call notifiers |
03bf0c28 JP |
464 | * @val: value passed unmodified to notifier function |
465 | * @dev: port device | |
466 | * @info: notifier information data | |
467 | * | |
468 | * Call all network notifier blocks. This should be called by driver | |
469 | * when it needs to propagate hardware event. | |
470 | * Return values are same as for atomic_notifier_call_chain(). | |
471 | */ | |
ebb9a03a JP |
472 | int call_switchdev_notifiers(unsigned long val, struct net_device *dev, |
473 | struct switchdev_notifier_info *info) | |
03bf0c28 JP |
474 | { |
475 | int err; | |
476 | ||
477 | info->dev = dev; | |
ebb9a03a JP |
478 | mutex_lock(&switchdev_mutex); |
479 | err = raw_notifier_call_chain(&switchdev_notif_chain, val, info); | |
480 | mutex_unlock(&switchdev_mutex); | |
03bf0c28 JP |
481 | return err; |
482 | } | |
ebb9a03a | 483 | EXPORT_SYMBOL_GPL(call_switchdev_notifiers); |
8a44dbb2 | 484 | |
7d4f8d87 | 485 | struct switchdev_vlan_dump { |
25f07adc | 486 | struct switchdev_obj_vlan vlan; |
7d4f8d87 SF |
487 | struct sk_buff *skb; |
488 | u32 filter_mask; | |
489 | u16 flags; | |
490 | u16 begin; | |
491 | u16 end; | |
492 | }; | |
493 | ||
e23b002b | 494 | static int switchdev_port_vlan_dump_put(struct switchdev_vlan_dump *dump) |
7d4f8d87 SF |
495 | { |
496 | struct bridge_vlan_info vinfo; | |
497 | ||
498 | vinfo.flags = dump->flags; | |
499 | ||
500 | if (dump->begin == 0 && dump->end == 0) { | |
501 | return 0; | |
502 | } else if (dump->begin == dump->end) { | |
503 | vinfo.vid = dump->begin; | |
504 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
505 | sizeof(vinfo), &vinfo)) | |
506 | return -EMSGSIZE; | |
507 | } else { | |
508 | vinfo.vid = dump->begin; | |
509 | vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
510 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
511 | sizeof(vinfo), &vinfo)) | |
512 | return -EMSGSIZE; | |
513 | vinfo.vid = dump->end; | |
514 | vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
515 | vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_END; | |
516 | if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, | |
517 | sizeof(vinfo), &vinfo)) | |
518 | return -EMSGSIZE; | |
519 | } | |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
25f07adc | 524 | static int switchdev_port_vlan_dump_cb(void *obj) |
7d4f8d87 | 525 | { |
25f07adc | 526 | struct switchdev_obj_vlan *vlan = obj; |
7d4f8d87 | 527 | struct switchdev_vlan_dump *dump = |
25f07adc | 528 | container_of(vlan, struct switchdev_vlan_dump, vlan); |
7d4f8d87 SF |
529 | int err = 0; |
530 | ||
531 | if (vlan->vid_begin > vlan->vid_end) | |
532 | return -EINVAL; | |
533 | ||
534 | if (dump->filter_mask & RTEXT_FILTER_BRVLAN) { | |
535 | dump->flags = vlan->flags; | |
536 | for (dump->begin = dump->end = vlan->vid_begin; | |
537 | dump->begin <= vlan->vid_end; | |
538 | dump->begin++, dump->end++) { | |
e23b002b | 539 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
540 | if (err) |
541 | return err; | |
542 | } | |
543 | } else if (dump->filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) { | |
544 | if (dump->begin > vlan->vid_begin && | |
545 | dump->begin >= vlan->vid_end) { | |
546 | if ((dump->begin - 1) == vlan->vid_end && | |
547 | dump->flags == vlan->flags) { | |
548 | /* prepend */ | |
549 | dump->begin = vlan->vid_begin; | |
550 | } else { | |
e23b002b | 551 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
552 | dump->flags = vlan->flags; |
553 | dump->begin = vlan->vid_begin; | |
554 | dump->end = vlan->vid_end; | |
555 | } | |
556 | } else if (dump->end <= vlan->vid_begin && | |
557 | dump->end < vlan->vid_end) { | |
558 | if ((dump->end + 1) == vlan->vid_begin && | |
559 | dump->flags == vlan->flags) { | |
560 | /* append */ | |
561 | dump->end = vlan->vid_end; | |
562 | } else { | |
e23b002b | 563 | err = switchdev_port_vlan_dump_put(dump); |
7d4f8d87 SF |
564 | dump->flags = vlan->flags; |
565 | dump->begin = vlan->vid_begin; | |
566 | dump->end = vlan->vid_end; | |
567 | } | |
568 | } else { | |
569 | err = -EINVAL; | |
570 | } | |
571 | } | |
572 | ||
573 | return err; | |
574 | } | |
575 | ||
576 | static int switchdev_port_vlan_fill(struct sk_buff *skb, struct net_device *dev, | |
577 | u32 filter_mask) | |
578 | { | |
579 | struct switchdev_vlan_dump dump = { | |
7d4f8d87 SF |
580 | .skb = skb, |
581 | .filter_mask = filter_mask, | |
582 | }; | |
583 | int err = 0; | |
584 | ||
585 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || | |
586 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { | |
57d80838 | 587 | err = switchdev_port_obj_dump(dev, SWITCHDEV_OBJ_ID_PORT_VLAN, |
25f07adc VD |
588 | &dump.vlan, |
589 | switchdev_port_vlan_dump_cb); | |
7d4f8d87 SF |
590 | if (err) |
591 | goto err_out; | |
592 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) | |
593 | /* last one */ | |
e23b002b | 594 | err = switchdev_port_vlan_dump_put(&dump); |
7d4f8d87 SF |
595 | } |
596 | ||
597 | err_out: | |
598 | return err == -EOPNOTSUPP ? 0 : err; | |
599 | } | |
600 | ||
8793d0a6 SF |
601 | /** |
602 | * switchdev_port_bridge_getlink - Get bridge port attributes | |
603 | * | |
604 | * @dev: port device | |
605 | * | |
606 | * Called for SELF on rtnl_bridge_getlink to get bridge port | |
607 | * attributes. | |
608 | */ | |
609 | int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, | |
610 | struct net_device *dev, u32 filter_mask, | |
611 | int nlflags) | |
612 | { | |
613 | struct switchdev_attr attr = { | |
614 | .id = SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS, | |
615 | }; | |
616 | u16 mode = BRIDGE_MODE_UNDEF; | |
617 | u32 mask = BR_LEARNING | BR_LEARNING_SYNC; | |
618 | int err; | |
619 | ||
620 | err = switchdev_port_attr_get(dev, &attr); | |
5c8079d0 | 621 | if (err && err != -EOPNOTSUPP) |
8793d0a6 SF |
622 | return err; |
623 | ||
624 | return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, | |
7d4f8d87 SF |
625 | attr.u.brport_flags, mask, nlflags, |
626 | filter_mask, switchdev_port_vlan_fill); | |
8793d0a6 SF |
627 | } |
628 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_getlink); | |
629 | ||
47f8328b SF |
630 | static int switchdev_port_br_setflag(struct net_device *dev, |
631 | struct nlattr *nlattr, | |
632 | unsigned long brport_flag) | |
633 | { | |
634 | struct switchdev_attr attr = { | |
635 | .id = SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS, | |
636 | }; | |
637 | u8 flag = nla_get_u8(nlattr); | |
638 | int err; | |
639 | ||
640 | err = switchdev_port_attr_get(dev, &attr); | |
641 | if (err) | |
642 | return err; | |
643 | ||
644 | if (flag) | |
42275bd8 | 645 | attr.u.brport_flags |= brport_flag; |
47f8328b | 646 | else |
42275bd8 | 647 | attr.u.brport_flags &= ~brport_flag; |
47f8328b SF |
648 | |
649 | return switchdev_port_attr_set(dev, &attr); | |
650 | } | |
651 | ||
652 | static const struct nla_policy | |
653 | switchdev_port_bridge_policy[IFLA_BRPORT_MAX + 1] = { | |
654 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, | |
655 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, | |
656 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, | |
657 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, | |
658 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, | |
659 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, | |
660 | [IFLA_BRPORT_FAST_LEAVE] = { .type = NLA_U8 }, | |
661 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, | |
662 | [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 }, | |
663 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, | |
664 | }; | |
665 | ||
666 | static int switchdev_port_br_setlink_protinfo(struct net_device *dev, | |
667 | struct nlattr *protinfo) | |
668 | { | |
669 | struct nlattr *attr; | |
670 | int rem; | |
671 | int err; | |
672 | ||
673 | err = nla_validate_nested(protinfo, IFLA_BRPORT_MAX, | |
674 | switchdev_port_bridge_policy); | |
675 | if (err) | |
676 | return err; | |
677 | ||
678 | nla_for_each_nested(attr, protinfo, rem) { | |
679 | switch (nla_type(attr)) { | |
680 | case IFLA_BRPORT_LEARNING: | |
681 | err = switchdev_port_br_setflag(dev, attr, | |
682 | BR_LEARNING); | |
683 | break; | |
684 | case IFLA_BRPORT_LEARNING_SYNC: | |
685 | err = switchdev_port_br_setflag(dev, attr, | |
686 | BR_LEARNING_SYNC); | |
687 | break; | |
688 | default: | |
689 | err = -EOPNOTSUPP; | |
690 | break; | |
691 | } | |
692 | if (err) | |
693 | return err; | |
694 | } | |
695 | ||
696 | return 0; | |
697 | } | |
698 | ||
699 | static int switchdev_port_br_afspec(struct net_device *dev, | |
700 | struct nlattr *afspec, | |
701 | int (*f)(struct net_device *dev, | |
ab069002 VD |
702 | enum switchdev_obj_id id, |
703 | const void *obj)) | |
47f8328b SF |
704 | { |
705 | struct nlattr *attr; | |
706 | struct bridge_vlan_info *vinfo; | |
ab069002 | 707 | struct switchdev_obj_vlan vlan = { 0 }; |
47f8328b SF |
708 | int rem; |
709 | int err; | |
710 | ||
711 | nla_for_each_nested(attr, afspec, rem) { | |
712 | if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO) | |
713 | continue; | |
714 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) | |
715 | return -EINVAL; | |
716 | vinfo = nla_data(attr); | |
ab069002 | 717 | vlan.flags = vinfo->flags; |
47f8328b | 718 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
ab069002 | 719 | if (vlan.vid_begin) |
47f8328b | 720 | return -EINVAL; |
ab069002 | 721 | vlan.vid_begin = vinfo->vid; |
47f8328b | 722 | } else if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END) { |
ab069002 | 723 | if (!vlan.vid_begin) |
47f8328b | 724 | return -EINVAL; |
ab069002 VD |
725 | vlan.vid_end = vinfo->vid; |
726 | if (vlan.vid_end <= vlan.vid_begin) | |
47f8328b | 727 | return -EINVAL; |
57d80838 | 728 | err = f(dev, SWITCHDEV_OBJ_ID_PORT_VLAN, &vlan); |
47f8328b SF |
729 | if (err) |
730 | return err; | |
ab069002 | 731 | memset(&vlan, 0, sizeof(vlan)); |
47f8328b | 732 | } else { |
ab069002 | 733 | if (vlan.vid_begin) |
47f8328b | 734 | return -EINVAL; |
ab069002 VD |
735 | vlan.vid_begin = vinfo->vid; |
736 | vlan.vid_end = vinfo->vid; | |
57d80838 | 737 | err = f(dev, SWITCHDEV_OBJ_ID_PORT_VLAN, &vlan); |
47f8328b SF |
738 | if (err) |
739 | return err; | |
ab069002 | 740 | memset(&vlan, 0, sizeof(vlan)); |
47f8328b SF |
741 | } |
742 | } | |
743 | ||
744 | return 0; | |
745 | } | |
746 | ||
8a44dbb2 | 747 | /** |
47f8328b | 748 | * switchdev_port_bridge_setlink - Set bridge port attributes |
8a44dbb2 RP |
749 | * |
750 | * @dev: port device | |
47f8328b SF |
751 | * @nlh: netlink header |
752 | * @flags: netlink flags | |
8a44dbb2 | 753 | * |
47f8328b SF |
754 | * Called for SELF on rtnl_bridge_setlink to set bridge port |
755 | * attributes. | |
8a44dbb2 | 756 | */ |
ebb9a03a JP |
757 | int switchdev_port_bridge_setlink(struct net_device *dev, |
758 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 | 759 | { |
47f8328b SF |
760 | struct nlattr *protinfo; |
761 | struct nlattr *afspec; | |
762 | int err = 0; | |
763 | ||
764 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), | |
765 | IFLA_PROTINFO); | |
766 | if (protinfo) { | |
767 | err = switchdev_port_br_setlink_protinfo(dev, protinfo); | |
768 | if (err) | |
769 | return err; | |
770 | } | |
8a44dbb2 | 771 | |
47f8328b SF |
772 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), |
773 | IFLA_AF_SPEC); | |
774 | if (afspec) | |
775 | err = switchdev_port_br_afspec(dev, afspec, | |
776 | switchdev_port_obj_add); | |
8a44dbb2 | 777 | |
47f8328b | 778 | return err; |
8a44dbb2 | 779 | } |
ebb9a03a | 780 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_setlink); |
8a44dbb2 RP |
781 | |
782 | /** | |
5c34e022 | 783 | * switchdev_port_bridge_dellink - Set bridge port attributes |
8a44dbb2 RP |
784 | * |
785 | * @dev: port device | |
5c34e022 SF |
786 | * @nlh: netlink header |
787 | * @flags: netlink flags | |
8a44dbb2 | 788 | * |
5c34e022 SF |
789 | * Called for SELF on rtnl_bridge_dellink to set bridge port |
790 | * attributes. | |
8a44dbb2 | 791 | */ |
ebb9a03a JP |
792 | int switchdev_port_bridge_dellink(struct net_device *dev, |
793 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 | 794 | { |
5c34e022 | 795 | struct nlattr *afspec; |
8a44dbb2 | 796 | |
5c34e022 SF |
797 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), |
798 | IFLA_AF_SPEC); | |
799 | if (afspec) | |
800 | return switchdev_port_br_afspec(dev, afspec, | |
801 | switchdev_port_obj_del); | |
8a44dbb2 | 802 | |
5c34e022 | 803 | return 0; |
8a44dbb2 | 804 | } |
ebb9a03a | 805 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_dellink); |
8a44dbb2 | 806 | |
45d4122c SS |
807 | /** |
808 | * switchdev_port_fdb_add - Add FDB (MAC/VLAN) entry to port | |
809 | * | |
810 | * @ndmsg: netlink hdr | |
811 | * @nlattr: netlink attributes | |
812 | * @dev: port device | |
813 | * @addr: MAC address to add | |
814 | * @vid: VLAN to add | |
815 | * | |
816 | * Add FDB entry to switch device. | |
817 | */ | |
818 | int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], | |
819 | struct net_device *dev, const unsigned char *addr, | |
820 | u16 vid, u16 nlm_flags) | |
821 | { | |
ab069002 VD |
822 | struct switchdev_obj_fdb fdb = { |
823 | .addr = addr, | |
824 | .vid = vid, | |
45d4122c SS |
825 | }; |
826 | ||
57d80838 | 827 | return switchdev_port_obj_add(dev, SWITCHDEV_OBJ_ID_PORT_FDB, &fdb); |
45d4122c SS |
828 | } |
829 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_add); | |
830 | ||
831 | /** | |
832 | * switchdev_port_fdb_del - Delete FDB (MAC/VLAN) entry from port | |
833 | * | |
834 | * @ndmsg: netlink hdr | |
835 | * @nlattr: netlink attributes | |
836 | * @dev: port device | |
837 | * @addr: MAC address to delete | |
838 | * @vid: VLAN to delete | |
839 | * | |
840 | * Delete FDB entry from switch device. | |
841 | */ | |
842 | int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], | |
843 | struct net_device *dev, const unsigned char *addr, | |
844 | u16 vid) | |
845 | { | |
ab069002 VD |
846 | struct switchdev_obj_fdb fdb = { |
847 | .addr = addr, | |
848 | .vid = vid, | |
45d4122c SS |
849 | }; |
850 | ||
57d80838 | 851 | return switchdev_port_obj_del(dev, SWITCHDEV_OBJ_ID_PORT_FDB, &fdb); |
45d4122c SS |
852 | } |
853 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_del); | |
854 | ||
855 | struct switchdev_fdb_dump { | |
25f07adc | 856 | struct switchdev_obj_fdb fdb; |
e02a06b2 | 857 | struct net_device *dev; |
45d4122c SS |
858 | struct sk_buff *skb; |
859 | struct netlink_callback *cb; | |
45d4122c SS |
860 | int idx; |
861 | }; | |
862 | ||
25f07adc | 863 | static int switchdev_port_fdb_dump_cb(void *obj) |
45d4122c | 864 | { |
25f07adc | 865 | struct switchdev_obj_fdb *fdb = obj; |
45d4122c | 866 | struct switchdev_fdb_dump *dump = |
25f07adc | 867 | container_of(fdb, struct switchdev_fdb_dump, fdb); |
45d4122c SS |
868 | u32 portid = NETLINK_CB(dump->cb->skb).portid; |
869 | u32 seq = dump->cb->nlh->nlmsg_seq; | |
870 | struct nlmsghdr *nlh; | |
871 | struct ndmsg *ndm; | |
45d4122c SS |
872 | |
873 | if (dump->idx < dump->cb->args[0]) | |
874 | goto skip; | |
875 | ||
45d4122c SS |
876 | nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, |
877 | sizeof(*ndm), NLM_F_MULTI); | |
878 | if (!nlh) | |
879 | return -EMSGSIZE; | |
880 | ||
881 | ndm = nlmsg_data(nlh); | |
882 | ndm->ndm_family = AF_BRIDGE; | |
883 | ndm->ndm_pad1 = 0; | |
884 | ndm->ndm_pad2 = 0; | |
885 | ndm->ndm_flags = NTF_SELF; | |
886 | ndm->ndm_type = 0; | |
e02a06b2 | 887 | ndm->ndm_ifindex = dump->dev->ifindex; |
25f07adc | 888 | ndm->ndm_state = fdb->ndm_state; |
45d4122c | 889 | |
25f07adc | 890 | if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, fdb->addr)) |
45d4122c SS |
891 | goto nla_put_failure; |
892 | ||
25f07adc | 893 | if (fdb->vid && nla_put_u16(dump->skb, NDA_VLAN, fdb->vid)) |
45d4122c SS |
894 | goto nla_put_failure; |
895 | ||
896 | nlmsg_end(dump->skb, nlh); | |
897 | ||
898 | skip: | |
899 | dump->idx++; | |
900 | return 0; | |
901 | ||
902 | nla_put_failure: | |
903 | nlmsg_cancel(dump->skb, nlh); | |
904 | return -EMSGSIZE; | |
905 | } | |
906 | ||
907 | /** | |
908 | * switchdev_port_fdb_dump - Dump port FDB (MAC/VLAN) entries | |
909 | * | |
910 | * @skb: netlink skb | |
911 | * @cb: netlink callback | |
912 | * @dev: port device | |
913 | * @filter_dev: filter device | |
914 | * @idx: | |
915 | * | |
916 | * Delete FDB entry from switch device. | |
917 | */ | |
918 | int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
919 | struct net_device *dev, | |
920 | struct net_device *filter_dev, int idx) | |
921 | { | |
922 | struct switchdev_fdb_dump dump = { | |
e02a06b2 | 923 | .dev = dev, |
45d4122c SS |
924 | .skb = skb, |
925 | .cb = cb, | |
45d4122c SS |
926 | .idx = idx, |
927 | }; | |
45d4122c | 928 | |
57d80838 | 929 | switchdev_port_obj_dump(dev, SWITCHDEV_OBJ_ID_PORT_FDB, &dump.fdb, |
25f07adc | 930 | switchdev_port_fdb_dump_cb); |
45d4122c SS |
931 | return dump.idx; |
932 | } | |
933 | EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump); | |
934 | ||
ebb9a03a | 935 | static struct net_device *switchdev_get_lowest_dev(struct net_device *dev) |
b5d6fbde | 936 | { |
9d47c0a2 | 937 | const struct switchdev_ops *ops = dev->switchdev_ops; |
b5d6fbde SF |
938 | struct net_device *lower_dev; |
939 | struct net_device *port_dev; | |
940 | struct list_head *iter; | |
941 | ||
942 | /* Recusively search down until we find a sw port dev. | |
f8e20a9f | 943 | * (A sw port dev supports switchdev_port_attr_get). |
b5d6fbde SF |
944 | */ |
945 | ||
f8e20a9f | 946 | if (ops && ops->switchdev_port_attr_get) |
b5d6fbde SF |
947 | return dev; |
948 | ||
949 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
ebb9a03a | 950 | port_dev = switchdev_get_lowest_dev(lower_dev); |
b5d6fbde SF |
951 | if (port_dev) |
952 | return port_dev; | |
953 | } | |
954 | ||
955 | return NULL; | |
956 | } | |
957 | ||
ebb9a03a | 958 | static struct net_device *switchdev_get_dev_by_nhs(struct fib_info *fi) |
b5d6fbde | 959 | { |
f8e20a9f SF |
960 | struct switchdev_attr attr = { |
961 | .id = SWITCHDEV_ATTR_PORT_PARENT_ID, | |
962 | }; | |
963 | struct switchdev_attr prev_attr; | |
b5d6fbde SF |
964 | struct net_device *dev = NULL; |
965 | int nhsel; | |
966 | ||
967 | /* For this route, all nexthop devs must be on the same switch. */ | |
968 | ||
969 | for (nhsel = 0; nhsel < fi->fib_nhs; nhsel++) { | |
970 | const struct fib_nh *nh = &fi->fib_nh[nhsel]; | |
971 | ||
972 | if (!nh->nh_dev) | |
973 | return NULL; | |
974 | ||
ebb9a03a | 975 | dev = switchdev_get_lowest_dev(nh->nh_dev); |
b5d6fbde SF |
976 | if (!dev) |
977 | return NULL; | |
978 | ||
f8e20a9f | 979 | if (switchdev_port_attr_get(dev, &attr)) |
b5d6fbde SF |
980 | return NULL; |
981 | ||
d754f98b SF |
982 | if (nhsel > 0 && |
983 | !netdev_phys_item_id_same(&prev_attr.u.ppid, &attr.u.ppid)) | |
b5d6fbde | 984 | return NULL; |
b5d6fbde | 985 | |
f8e20a9f | 986 | prev_attr = attr; |
b5d6fbde SF |
987 | } |
988 | ||
989 | return dev; | |
990 | } | |
991 | ||
5e8d9049 | 992 | /** |
7616dcbb | 993 | * switchdev_fib_ipv4_add - Add/modify switch IPv4 route entry |
5e8d9049 SF |
994 | * |
995 | * @dst: route's IPv4 destination address | |
996 | * @dst_len: destination address length (prefix length) | |
997 | * @fi: route FIB info structure | |
998 | * @tos: route TOS | |
999 | * @type: route type | |
f8f21471 | 1000 | * @nlflags: netlink flags passed in (NLM_F_*) |
5e8d9049 SF |
1001 | * @tb_id: route table ID |
1002 | * | |
7616dcbb | 1003 | * Add/modify switch IPv4 route entry. |
5e8d9049 | 1004 | */ |
ebb9a03a JP |
1005 | int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi, |
1006 | u8 tos, u8 type, u32 nlflags, u32 tb_id) | |
5e8d9049 | 1007 | { |
ab069002 VD |
1008 | struct switchdev_obj_ipv4_fib ipv4_fib = { |
1009 | .dst = dst, | |
1010 | .dst_len = dst_len, | |
1011 | .fi = fi, | |
1012 | .tos = tos, | |
1013 | .type = type, | |
1014 | .nlflags = nlflags, | |
1015 | .tb_id = tb_id, | |
58c2cb16 | 1016 | }; |
b5d6fbde | 1017 | struct net_device *dev; |
b5d6fbde SF |
1018 | int err = 0; |
1019 | ||
8e05fd71 SF |
1020 | /* Don't offload route if using custom ip rules or if |
1021 | * IPv4 FIB offloading has been disabled completely. | |
1022 | */ | |
1023 | ||
e1315db1 SF |
1024 | #ifdef CONFIG_IP_MULTIPLE_TABLES |
1025 | if (fi->fib_net->ipv4.fib_has_custom_rules) | |
1026 | return 0; | |
1027 | #endif | |
1028 | ||
1029 | if (fi->fib_net->ipv4.fib_offload_disabled) | |
104616e7 SF |
1030 | return 0; |
1031 | ||
ebb9a03a | 1032 | dev = switchdev_get_dev_by_nhs(fi); |
b5d6fbde SF |
1033 | if (!dev) |
1034 | return 0; | |
58c2cb16 | 1035 | |
57d80838 | 1036 | err = switchdev_port_obj_add(dev, SWITCHDEV_OBJ_ID_IPV4_FIB, &ipv4_fib); |
58c2cb16 | 1037 | if (!err) |
36583eb5 | 1038 | fi->fib_flags |= RTNH_F_OFFLOAD; |
b5d6fbde | 1039 | |
af201f72 | 1040 | return err == -EOPNOTSUPP ? 0 : err; |
5e8d9049 | 1041 | } |
ebb9a03a | 1042 | EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_add); |
5e8d9049 SF |
1043 | |
1044 | /** | |
ebb9a03a | 1045 | * switchdev_fib_ipv4_del - Delete IPv4 route entry from switch |
5e8d9049 SF |
1046 | * |
1047 | * @dst: route's IPv4 destination address | |
1048 | * @dst_len: destination address length (prefix length) | |
1049 | * @fi: route FIB info structure | |
1050 | * @tos: route TOS | |
1051 | * @type: route type | |
1052 | * @tb_id: route table ID | |
1053 | * | |
1054 | * Delete IPv4 route entry from switch device. | |
1055 | */ | |
ebb9a03a JP |
1056 | int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi, |
1057 | u8 tos, u8 type, u32 tb_id) | |
5e8d9049 | 1058 | { |
ab069002 VD |
1059 | struct switchdev_obj_ipv4_fib ipv4_fib = { |
1060 | .dst = dst, | |
1061 | .dst_len = dst_len, | |
1062 | .fi = fi, | |
1063 | .tos = tos, | |
1064 | .type = type, | |
1065 | .nlflags = 0, | |
1066 | .tb_id = tb_id, | |
58c2cb16 | 1067 | }; |
b5d6fbde | 1068 | struct net_device *dev; |
b5d6fbde SF |
1069 | int err = 0; |
1070 | ||
eea39946 | 1071 | if (!(fi->fib_flags & RTNH_F_OFFLOAD)) |
b5d6fbde SF |
1072 | return 0; |
1073 | ||
ebb9a03a | 1074 | dev = switchdev_get_dev_by_nhs(fi); |
b5d6fbde SF |
1075 | if (!dev) |
1076 | return 0; | |
b5d6fbde | 1077 | |
57d80838 | 1078 | err = switchdev_port_obj_del(dev, SWITCHDEV_OBJ_ID_IPV4_FIB, &ipv4_fib); |
58c2cb16 | 1079 | if (!err) |
36583eb5 | 1080 | fi->fib_flags &= ~RTNH_F_OFFLOAD; |
b5d6fbde | 1081 | |
af201f72 | 1082 | return err == -EOPNOTSUPP ? 0 : err; |
5e8d9049 | 1083 | } |
ebb9a03a | 1084 | EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_del); |
8e05fd71 SF |
1085 | |
1086 | /** | |
ebb9a03a | 1087 | * switchdev_fib_ipv4_abort - Abort an IPv4 FIB operation |
8e05fd71 SF |
1088 | * |
1089 | * @fi: route FIB info structure | |
1090 | */ | |
ebb9a03a | 1091 | void switchdev_fib_ipv4_abort(struct fib_info *fi) |
8e05fd71 SF |
1092 | { |
1093 | /* There was a problem installing this route to the offload | |
1094 | * device. For now, until we come up with more refined | |
1095 | * policy handling, abruptly end IPv4 fib offloading for | |
1096 | * for entire net by flushing offload device(s) of all | |
1097 | * IPv4 routes, and mark IPv4 fib offloading broken from | |
1098 | * this point forward. | |
1099 | */ | |
1100 | ||
1101 | fib_flush_external(fi->fib_net); | |
1102 | fi->fib_net->ipv4.fib_offload_disabled = true; | |
1103 | } | |
ebb9a03a | 1104 | EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_abort); |
1a3b2ec9 SF |
1105 | |
1106 | static bool switchdev_port_same_parent_id(struct net_device *a, | |
1107 | struct net_device *b) | |
1108 | { | |
1109 | struct switchdev_attr a_attr = { | |
1110 | .id = SWITCHDEV_ATTR_PORT_PARENT_ID, | |
1111 | .flags = SWITCHDEV_F_NO_RECURSE, | |
1112 | }; | |
1113 | struct switchdev_attr b_attr = { | |
1114 | .id = SWITCHDEV_ATTR_PORT_PARENT_ID, | |
1115 | .flags = SWITCHDEV_F_NO_RECURSE, | |
1116 | }; | |
1117 | ||
1118 | if (switchdev_port_attr_get(a, &a_attr) || | |
1119 | switchdev_port_attr_get(b, &b_attr)) | |
1120 | return false; | |
1121 | ||
1122 | return netdev_phys_item_id_same(&a_attr.u.ppid, &b_attr.u.ppid); | |
1123 | } | |
1124 | ||
1125 | static u32 switchdev_port_fwd_mark_get(struct net_device *dev, | |
1126 | struct net_device *group_dev) | |
1127 | { | |
1128 | struct net_device *lower_dev; | |
1129 | struct list_head *iter; | |
1130 | ||
1131 | netdev_for_each_lower_dev(group_dev, lower_dev, iter) { | |
1132 | if (lower_dev == dev) | |
1133 | continue; | |
1134 | if (switchdev_port_same_parent_id(dev, lower_dev)) | |
1135 | return lower_dev->offload_fwd_mark; | |
1136 | return switchdev_port_fwd_mark_get(dev, lower_dev); | |
1137 | } | |
1138 | ||
1139 | return dev->ifindex; | |
1140 | } | |
1141 | ||
1142 | static void switchdev_port_fwd_mark_reset(struct net_device *group_dev, | |
1143 | u32 old_mark, u32 *reset_mark) | |
1144 | { | |
1145 | struct net_device *lower_dev; | |
1146 | struct list_head *iter; | |
1147 | ||
1148 | netdev_for_each_lower_dev(group_dev, lower_dev, iter) { | |
1149 | if (lower_dev->offload_fwd_mark == old_mark) { | |
1150 | if (!*reset_mark) | |
1151 | *reset_mark = lower_dev->ifindex; | |
1152 | lower_dev->offload_fwd_mark = *reset_mark; | |
1153 | } | |
1154 | switchdev_port_fwd_mark_reset(lower_dev, old_mark, reset_mark); | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | /** | |
1159 | * switchdev_port_fwd_mark_set - Set port offload forwarding mark | |
1160 | * | |
1161 | * @dev: port device | |
1162 | * @group_dev: containing device | |
1163 | * @joining: true if dev is joining group; false if leaving group | |
1164 | * | |
1165 | * An ungrouped port's offload mark is just its ifindex. A grouped | |
1166 | * port's (member of a bridge, for example) offload mark is the ifindex | |
1167 | * of one of the ports in the group with the same parent (switch) ID. | |
1168 | * Ports on the same device in the same group will have the same mark. | |
1169 | * | |
1170 | * Example: | |
1171 | * | |
1172 | * br0 ifindex=9 | |
1173 | * sw1p1 ifindex=2 mark=2 | |
1174 | * sw1p2 ifindex=3 mark=2 | |
1175 | * sw2p1 ifindex=4 mark=5 | |
1176 | * sw2p2 ifindex=5 mark=5 | |
1177 | * | |
1178 | * If sw2p2 leaves the bridge, we'll have: | |
1179 | * | |
1180 | * br0 ifindex=9 | |
1181 | * sw1p1 ifindex=2 mark=2 | |
1182 | * sw1p2 ifindex=3 mark=2 | |
1183 | * sw2p1 ifindex=4 mark=4 | |
1184 | * sw2p2 ifindex=5 mark=5 | |
1185 | */ | |
1186 | void switchdev_port_fwd_mark_set(struct net_device *dev, | |
1187 | struct net_device *group_dev, | |
1188 | bool joining) | |
1189 | { | |
1190 | u32 mark = dev->ifindex; | |
1191 | u32 reset_mark = 0; | |
1192 | ||
1193 | if (group_dev && joining) { | |
1194 | mark = switchdev_port_fwd_mark_get(dev, group_dev); | |
1195 | } else if (group_dev && !joining) { | |
1196 | if (dev->offload_fwd_mark == mark) | |
1197 | /* Ohoh, this port was the mark reference port, | |
1198 | * but it's leaving the group, so reset the | |
1199 | * mark for the remaining ports in the group. | |
1200 | */ | |
1201 | switchdev_port_fwd_mark_reset(group_dev, mark, | |
1202 | &reset_mark); | |
1203 | } | |
1204 | ||
1205 | dev->offload_fwd_mark = mark; | |
1206 | } | |
1207 | EXPORT_SYMBOL_GPL(switchdev_port_fwd_mark_set); |