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Commit | Line | Data |
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007f790c JP |
1 | /* |
2 | * net/switchdev/switchdev.c - Switch device API | |
3 | * Copyright (c) 2014 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> |
5e8d9049 | 18 | #include <net/ip_fib.h> |
007f790c JP |
19 | #include <net/switchdev.h> |
20 | ||
21 | /** | |
ebb9a03a | 22 | * switchdev_parent_id_get - Get ID of a switch |
007f790c JP |
23 | * @dev: port device |
24 | * @psid: switch ID | |
25 | * | |
26 | * Get ID of a switch this port is part of. | |
27 | */ | |
ebb9a03a JP |
28 | int switchdev_parent_id_get(struct net_device *dev, |
29 | struct netdev_phys_item_id *psid) | |
007f790c | 30 | { |
9d47c0a2 | 31 | const struct switchdev_ops *ops = dev->switchdev_ops; |
007f790c | 32 | |
9d47c0a2 | 33 | if (!ops || !ops->switchdev_parent_id_get) |
007f790c | 34 | return -EOPNOTSUPP; |
9d47c0a2 | 35 | return ops->switchdev_parent_id_get(dev, psid); |
007f790c | 36 | } |
ebb9a03a | 37 | EXPORT_SYMBOL_GPL(switchdev_parent_id_get); |
38dcf357 | 38 | |
3094333d SF |
39 | /** |
40 | * switchdev_port_attr_get - Get port attribute | |
41 | * | |
42 | * @dev: port device | |
43 | * @attr: attribute to get | |
44 | */ | |
45 | int switchdev_port_attr_get(struct net_device *dev, struct switchdev_attr *attr) | |
46 | { | |
47 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
48 | struct net_device *lower_dev; | |
49 | struct list_head *iter; | |
50 | struct switchdev_attr first = { | |
51 | .id = SWITCHDEV_ATTR_UNDEFINED | |
52 | }; | |
53 | int err = -EOPNOTSUPP; | |
54 | ||
55 | if (ops && ops->switchdev_port_attr_get) | |
56 | return ops->switchdev_port_attr_get(dev, attr); | |
57 | ||
58 | if (attr->flags & SWITCHDEV_F_NO_RECURSE) | |
59 | return err; | |
60 | ||
61 | /* Switch device port(s) may be stacked under | |
62 | * bond/team/vlan dev, so recurse down to get attr on | |
63 | * each port. Return -ENODATA if attr values don't | |
64 | * compare across ports. | |
65 | */ | |
66 | ||
67 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
68 | err = switchdev_port_attr_get(lower_dev, attr); | |
69 | if (err) | |
70 | break; | |
71 | if (first.id == SWITCHDEV_ATTR_UNDEFINED) | |
72 | first = *attr; | |
73 | else if (memcmp(&first, attr, sizeof(*attr))) | |
74 | return -ENODATA; | |
75 | } | |
76 | ||
77 | return err; | |
78 | } | |
79 | EXPORT_SYMBOL_GPL(switchdev_port_attr_get); | |
80 | ||
81 | static int __switchdev_port_attr_set(struct net_device *dev, | |
82 | struct switchdev_attr *attr) | |
83 | { | |
84 | const struct switchdev_ops *ops = dev->switchdev_ops; | |
85 | struct net_device *lower_dev; | |
86 | struct list_head *iter; | |
87 | int err = -EOPNOTSUPP; | |
88 | ||
89 | if (ops && ops->switchdev_port_attr_set) | |
90 | return ops->switchdev_port_attr_set(dev, attr); | |
91 | ||
92 | if (attr->flags & SWITCHDEV_F_NO_RECURSE) | |
93 | return err; | |
94 | ||
95 | /* Switch device port(s) may be stacked under | |
96 | * bond/team/vlan dev, so recurse down to set attr on | |
97 | * each port. | |
98 | */ | |
99 | ||
100 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
101 | err = __switchdev_port_attr_set(lower_dev, attr); | |
102 | if (err) | |
103 | break; | |
104 | } | |
105 | ||
106 | return err; | |
107 | } | |
108 | ||
109 | struct switchdev_attr_set_work { | |
110 | struct work_struct work; | |
111 | struct net_device *dev; | |
112 | struct switchdev_attr attr; | |
113 | }; | |
114 | ||
115 | static void switchdev_port_attr_set_work(struct work_struct *work) | |
116 | { | |
117 | struct switchdev_attr_set_work *asw = | |
118 | container_of(work, struct switchdev_attr_set_work, work); | |
119 | int err; | |
120 | ||
121 | rtnl_lock(); | |
122 | err = switchdev_port_attr_set(asw->dev, &asw->attr); | |
123 | BUG_ON(err); | |
124 | rtnl_unlock(); | |
125 | ||
126 | dev_put(asw->dev); | |
127 | kfree(work); | |
128 | } | |
129 | ||
130 | static int switchdev_port_attr_set_defer(struct net_device *dev, | |
131 | struct switchdev_attr *attr) | |
132 | { | |
133 | struct switchdev_attr_set_work *asw; | |
134 | ||
135 | asw = kmalloc(sizeof(*asw), GFP_ATOMIC); | |
136 | if (!asw) | |
137 | return -ENOMEM; | |
138 | ||
139 | INIT_WORK(&asw->work, switchdev_port_attr_set_work); | |
140 | ||
141 | dev_hold(dev); | |
142 | asw->dev = dev; | |
143 | memcpy(&asw->attr, attr, sizeof(asw->attr)); | |
144 | ||
145 | schedule_work(&asw->work); | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
150 | /** | |
151 | * switchdev_port_attr_set - Set port attribute | |
152 | * | |
153 | * @dev: port device | |
154 | * @attr: attribute to set | |
155 | * | |
156 | * Use a 2-phase prepare-commit transaction model to ensure | |
157 | * system is not left in a partially updated state due to | |
158 | * failure from driver/device. | |
159 | */ | |
160 | int switchdev_port_attr_set(struct net_device *dev, struct switchdev_attr *attr) | |
161 | { | |
162 | int err; | |
163 | ||
164 | if (!rtnl_is_locked()) { | |
165 | /* Running prepare-commit transaction across stacked | |
166 | * devices requires nothing moves, so if rtnl_lock is | |
167 | * not held, schedule a worker thread to hold rtnl_lock | |
168 | * while setting attr. | |
169 | */ | |
170 | ||
171 | return switchdev_port_attr_set_defer(dev, attr); | |
172 | } | |
173 | ||
174 | /* Phase I: prepare for attr set. Driver/device should fail | |
175 | * here if there are going to be issues in the commit phase, | |
176 | * such as lack of resources or support. The driver/device | |
177 | * should reserve resources needed for the commit phase here, | |
178 | * but should not commit the attr. | |
179 | */ | |
180 | ||
181 | attr->trans = SWITCHDEV_TRANS_PREPARE; | |
182 | err = __switchdev_port_attr_set(dev, attr); | |
183 | if (err) { | |
184 | /* Prepare phase failed: abort the transaction. Any | |
185 | * resources reserved in the prepare phase are | |
186 | * released. | |
187 | */ | |
188 | ||
189 | attr->trans = SWITCHDEV_TRANS_ABORT; | |
190 | __switchdev_port_attr_set(dev, attr); | |
191 | ||
192 | return err; | |
193 | } | |
194 | ||
195 | /* Phase II: commit attr set. This cannot fail as a fault | |
196 | * of driver/device. If it does, it's a bug in the driver/device | |
197 | * because the driver said everythings was OK in phase I. | |
198 | */ | |
199 | ||
200 | attr->trans = SWITCHDEV_TRANS_COMMIT; | |
201 | err = __switchdev_port_attr_set(dev, attr); | |
202 | BUG_ON(err); | |
203 | ||
204 | return err; | |
205 | } | |
206 | EXPORT_SYMBOL_GPL(switchdev_port_attr_set); | |
207 | ||
38dcf357 | 208 | /** |
ebb9a03a | 209 | * switchdev_port_stp_update - Notify switch device port of STP |
38dcf357 SF |
210 | * state change |
211 | * @dev: port device | |
212 | * @state: port STP state | |
213 | * | |
214 | * Notify switch device port of bridge port STP state change. | |
215 | */ | |
ebb9a03a | 216 | int switchdev_port_stp_update(struct net_device *dev, u8 state) |
38dcf357 | 217 | { |
9d47c0a2 | 218 | const struct switchdev_ops *ops = dev->switchdev_ops; |
558d51fa RP |
219 | struct net_device *lower_dev; |
220 | struct list_head *iter; | |
221 | int err = -EOPNOTSUPP; | |
38dcf357 | 222 | |
9d47c0a2 JP |
223 | if (ops && ops->switchdev_port_stp_update) |
224 | return ops->switchdev_port_stp_update(dev, state); | |
558d51fa RP |
225 | |
226 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
ebb9a03a | 227 | err = switchdev_port_stp_update(lower_dev, state); |
558d51fa RP |
228 | if (err && err != -EOPNOTSUPP) |
229 | return err; | |
230 | } | |
231 | ||
232 | return err; | |
38dcf357 | 233 | } |
ebb9a03a | 234 | EXPORT_SYMBOL_GPL(switchdev_port_stp_update); |
03bf0c28 | 235 | |
ebb9a03a JP |
236 | static DEFINE_MUTEX(switchdev_mutex); |
237 | static RAW_NOTIFIER_HEAD(switchdev_notif_chain); | |
03bf0c28 JP |
238 | |
239 | /** | |
ebb9a03a | 240 | * register_switchdev_notifier - Register notifier |
03bf0c28 JP |
241 | * @nb: notifier_block |
242 | * | |
243 | * Register switch device notifier. This should be used by code | |
244 | * which needs to monitor events happening in particular device. | |
245 | * Return values are same as for atomic_notifier_chain_register(). | |
246 | */ | |
ebb9a03a | 247 | int register_switchdev_notifier(struct notifier_block *nb) |
03bf0c28 JP |
248 | { |
249 | int err; | |
250 | ||
ebb9a03a JP |
251 | mutex_lock(&switchdev_mutex); |
252 | err = raw_notifier_chain_register(&switchdev_notif_chain, nb); | |
253 | mutex_unlock(&switchdev_mutex); | |
03bf0c28 JP |
254 | return err; |
255 | } | |
ebb9a03a | 256 | EXPORT_SYMBOL_GPL(register_switchdev_notifier); |
03bf0c28 JP |
257 | |
258 | /** | |
ebb9a03a | 259 | * unregister_switchdev_notifier - Unregister notifier |
03bf0c28 JP |
260 | * @nb: notifier_block |
261 | * | |
262 | * Unregister switch device notifier. | |
263 | * Return values are same as for atomic_notifier_chain_unregister(). | |
264 | */ | |
ebb9a03a | 265 | int unregister_switchdev_notifier(struct notifier_block *nb) |
03bf0c28 JP |
266 | { |
267 | int err; | |
268 | ||
ebb9a03a JP |
269 | mutex_lock(&switchdev_mutex); |
270 | err = raw_notifier_chain_unregister(&switchdev_notif_chain, nb); | |
271 | mutex_unlock(&switchdev_mutex); | |
03bf0c28 JP |
272 | return err; |
273 | } | |
ebb9a03a | 274 | EXPORT_SYMBOL_GPL(unregister_switchdev_notifier); |
03bf0c28 JP |
275 | |
276 | /** | |
ebb9a03a | 277 | * call_switchdev_notifiers - Call notifiers |
03bf0c28 JP |
278 | * @val: value passed unmodified to notifier function |
279 | * @dev: port device | |
280 | * @info: notifier information data | |
281 | * | |
282 | * Call all network notifier blocks. This should be called by driver | |
283 | * when it needs to propagate hardware event. | |
284 | * Return values are same as for atomic_notifier_call_chain(). | |
285 | */ | |
ebb9a03a JP |
286 | int call_switchdev_notifiers(unsigned long val, struct net_device *dev, |
287 | struct switchdev_notifier_info *info) | |
03bf0c28 JP |
288 | { |
289 | int err; | |
290 | ||
291 | info->dev = dev; | |
ebb9a03a JP |
292 | mutex_lock(&switchdev_mutex); |
293 | err = raw_notifier_call_chain(&switchdev_notif_chain, val, info); | |
294 | mutex_unlock(&switchdev_mutex); | |
03bf0c28 JP |
295 | return err; |
296 | } | |
ebb9a03a | 297 | EXPORT_SYMBOL_GPL(call_switchdev_notifiers); |
8a44dbb2 RP |
298 | |
299 | /** | |
ebb9a03a | 300 | * switchdev_port_bridge_setlink - Notify switch device port of bridge |
8a44dbb2 RP |
301 | * port attributes |
302 | * | |
303 | * @dev: port device | |
304 | * @nlh: netlink msg with bridge port attributes | |
305 | * @flags: bridge setlink flags | |
306 | * | |
307 | * Notify switch device port of bridge port attributes | |
308 | */ | |
ebb9a03a JP |
309 | int switchdev_port_bridge_setlink(struct net_device *dev, |
310 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 RP |
311 | { |
312 | const struct net_device_ops *ops = dev->netdev_ops; | |
313 | ||
314 | if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) | |
315 | return 0; | |
316 | ||
317 | if (!ops->ndo_bridge_setlink) | |
318 | return -EOPNOTSUPP; | |
319 | ||
320 | return ops->ndo_bridge_setlink(dev, nlh, flags); | |
321 | } | |
ebb9a03a | 322 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_setlink); |
8a44dbb2 RP |
323 | |
324 | /** | |
ebb9a03a | 325 | * switchdev_port_bridge_dellink - Notify switch device port of bridge |
8a44dbb2 RP |
326 | * port attribute delete |
327 | * | |
328 | * @dev: port device | |
329 | * @nlh: netlink msg with bridge port attributes | |
330 | * @flags: bridge setlink flags | |
331 | * | |
332 | * Notify switch device port of bridge port attribute delete | |
333 | */ | |
ebb9a03a JP |
334 | int switchdev_port_bridge_dellink(struct net_device *dev, |
335 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 RP |
336 | { |
337 | const struct net_device_ops *ops = dev->netdev_ops; | |
338 | ||
339 | if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) | |
340 | return 0; | |
341 | ||
342 | if (!ops->ndo_bridge_dellink) | |
343 | return -EOPNOTSUPP; | |
344 | ||
345 | return ops->ndo_bridge_dellink(dev, nlh, flags); | |
346 | } | |
ebb9a03a | 347 | EXPORT_SYMBOL_GPL(switchdev_port_bridge_dellink); |
8a44dbb2 RP |
348 | |
349 | /** | |
ebb9a03a JP |
350 | * ndo_dflt_switchdev_port_bridge_setlink - default ndo bridge setlink |
351 | * op for master devices | |
8a44dbb2 RP |
352 | * |
353 | * @dev: port device | |
354 | * @nlh: netlink msg with bridge port attributes | |
355 | * @flags: bridge setlink flags | |
356 | * | |
357 | * Notify master device slaves of bridge port attributes | |
358 | */ | |
ebb9a03a JP |
359 | int ndo_dflt_switchdev_port_bridge_setlink(struct net_device *dev, |
360 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 RP |
361 | { |
362 | struct net_device *lower_dev; | |
363 | struct list_head *iter; | |
364 | int ret = 0, err = 0; | |
365 | ||
366 | if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) | |
367 | return ret; | |
368 | ||
369 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
ebb9a03a | 370 | err = switchdev_port_bridge_setlink(lower_dev, nlh, flags); |
8a44dbb2 RP |
371 | if (err && err != -EOPNOTSUPP) |
372 | ret = err; | |
373 | } | |
374 | ||
375 | return ret; | |
376 | } | |
ebb9a03a | 377 | EXPORT_SYMBOL_GPL(ndo_dflt_switchdev_port_bridge_setlink); |
8a44dbb2 RP |
378 | |
379 | /** | |
ebb9a03a JP |
380 | * ndo_dflt_switchdev_port_bridge_dellink - default ndo bridge dellink |
381 | * op for master devices | |
8a44dbb2 RP |
382 | * |
383 | * @dev: port device | |
384 | * @nlh: netlink msg with bridge port attributes | |
385 | * @flags: bridge dellink flags | |
386 | * | |
387 | * Notify master device slaves of bridge port attribute deletes | |
388 | */ | |
ebb9a03a JP |
389 | int ndo_dflt_switchdev_port_bridge_dellink(struct net_device *dev, |
390 | struct nlmsghdr *nlh, u16 flags) | |
8a44dbb2 RP |
391 | { |
392 | struct net_device *lower_dev; | |
393 | struct list_head *iter; | |
394 | int ret = 0, err = 0; | |
395 | ||
396 | if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) | |
397 | return ret; | |
398 | ||
399 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
ebb9a03a | 400 | err = switchdev_port_bridge_dellink(lower_dev, nlh, flags); |
8a44dbb2 RP |
401 | if (err && err != -EOPNOTSUPP) |
402 | ret = err; | |
403 | } | |
404 | ||
405 | return ret; | |
406 | } | |
ebb9a03a | 407 | EXPORT_SYMBOL_GPL(ndo_dflt_switchdev_port_bridge_dellink); |
5e8d9049 | 408 | |
ebb9a03a | 409 | static struct net_device *switchdev_get_lowest_dev(struct net_device *dev) |
b5d6fbde | 410 | { |
9d47c0a2 | 411 | const struct switchdev_ops *ops = dev->switchdev_ops; |
b5d6fbde SF |
412 | struct net_device *lower_dev; |
413 | struct net_device *port_dev; | |
414 | struct list_head *iter; | |
415 | ||
416 | /* Recusively search down until we find a sw port dev. | |
9d47c0a2 | 417 | * (A sw port dev supports switchdev_parent_id_get). |
b5d6fbde SF |
418 | */ |
419 | ||
420 | if (dev->features & NETIF_F_HW_SWITCH_OFFLOAD && | |
9d47c0a2 | 421 | ops && ops->switchdev_parent_id_get) |
b5d6fbde SF |
422 | return dev; |
423 | ||
424 | netdev_for_each_lower_dev(dev, lower_dev, iter) { | |
ebb9a03a | 425 | port_dev = switchdev_get_lowest_dev(lower_dev); |
b5d6fbde SF |
426 | if (port_dev) |
427 | return port_dev; | |
428 | } | |
429 | ||
430 | return NULL; | |
431 | } | |
432 | ||
ebb9a03a | 433 | static struct net_device *switchdev_get_dev_by_nhs(struct fib_info *fi) |
b5d6fbde SF |
434 | { |
435 | struct netdev_phys_item_id psid; | |
436 | struct netdev_phys_item_id prev_psid; | |
437 | struct net_device *dev = NULL; | |
438 | int nhsel; | |
439 | ||
440 | /* For this route, all nexthop devs must be on the same switch. */ | |
441 | ||
442 | for (nhsel = 0; nhsel < fi->fib_nhs; nhsel++) { | |
443 | const struct fib_nh *nh = &fi->fib_nh[nhsel]; | |
444 | ||
445 | if (!nh->nh_dev) | |
446 | return NULL; | |
447 | ||
ebb9a03a | 448 | dev = switchdev_get_lowest_dev(nh->nh_dev); |
b5d6fbde SF |
449 | if (!dev) |
450 | return NULL; | |
451 | ||
ebb9a03a | 452 | if (switchdev_parent_id_get(dev, &psid)) |
b5d6fbde SF |
453 | return NULL; |
454 | ||
455 | if (nhsel > 0) { | |
456 | if (prev_psid.id_len != psid.id_len) | |
457 | return NULL; | |
458 | if (memcmp(prev_psid.id, psid.id, psid.id_len)) | |
459 | return NULL; | |
460 | } | |
461 | ||
462 | prev_psid = psid; | |
463 | } | |
464 | ||
465 | return dev; | |
466 | } | |
467 | ||
5e8d9049 | 468 | /** |
ebb9a03a | 469 | * switchdev_fib_ipv4_add - Add IPv4 route entry to switch |
5e8d9049 SF |
470 | * |
471 | * @dst: route's IPv4 destination address | |
472 | * @dst_len: destination address length (prefix length) | |
473 | * @fi: route FIB info structure | |
474 | * @tos: route TOS | |
475 | * @type: route type | |
f8f21471 | 476 | * @nlflags: netlink flags passed in (NLM_F_*) |
5e8d9049 SF |
477 | * @tb_id: route table ID |
478 | * | |
479 | * Add IPv4 route entry to switch device. | |
480 | */ | |
ebb9a03a JP |
481 | int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi, |
482 | u8 tos, u8 type, u32 nlflags, u32 tb_id) | |
5e8d9049 | 483 | { |
b5d6fbde | 484 | struct net_device *dev; |
9d47c0a2 | 485 | const struct switchdev_ops *ops; |
b5d6fbde SF |
486 | int err = 0; |
487 | ||
8e05fd71 SF |
488 | /* Don't offload route if using custom ip rules or if |
489 | * IPv4 FIB offloading has been disabled completely. | |
490 | */ | |
491 | ||
e1315db1 SF |
492 | #ifdef CONFIG_IP_MULTIPLE_TABLES |
493 | if (fi->fib_net->ipv4.fib_has_custom_rules) | |
494 | return 0; | |
495 | #endif | |
496 | ||
497 | if (fi->fib_net->ipv4.fib_offload_disabled) | |
104616e7 SF |
498 | return 0; |
499 | ||
ebb9a03a | 500 | dev = switchdev_get_dev_by_nhs(fi); |
b5d6fbde SF |
501 | if (!dev) |
502 | return 0; | |
9d47c0a2 | 503 | ops = dev->switchdev_ops; |
b5d6fbde | 504 | |
9d47c0a2 JP |
505 | if (ops->switchdev_fib_ipv4_add) { |
506 | err = ops->switchdev_fib_ipv4_add(dev, htonl(dst), dst_len, | |
507 | fi, tos, type, nlflags, | |
508 | tb_id); | |
b5d6fbde SF |
509 | if (!err) |
510 | fi->fib_flags |= RTNH_F_EXTERNAL; | |
511 | } | |
512 | ||
513 | return err; | |
5e8d9049 | 514 | } |
ebb9a03a | 515 | EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_add); |
5e8d9049 SF |
516 | |
517 | /** | |
ebb9a03a | 518 | * switchdev_fib_ipv4_del - Delete IPv4 route entry from switch |
5e8d9049 SF |
519 | * |
520 | * @dst: route's IPv4 destination address | |
521 | * @dst_len: destination address length (prefix length) | |
522 | * @fi: route FIB info structure | |
523 | * @tos: route TOS | |
524 | * @type: route type | |
525 | * @tb_id: route table ID | |
526 | * | |
527 | * Delete IPv4 route entry from switch device. | |
528 | */ | |
ebb9a03a JP |
529 | int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi, |
530 | u8 tos, u8 type, u32 tb_id) | |
5e8d9049 | 531 | { |
b5d6fbde | 532 | struct net_device *dev; |
9d47c0a2 | 533 | const struct switchdev_ops *ops; |
b5d6fbde SF |
534 | int err = 0; |
535 | ||
536 | if (!(fi->fib_flags & RTNH_F_EXTERNAL)) | |
537 | return 0; | |
538 | ||
ebb9a03a | 539 | dev = switchdev_get_dev_by_nhs(fi); |
b5d6fbde SF |
540 | if (!dev) |
541 | return 0; | |
9d47c0a2 | 542 | ops = dev->switchdev_ops; |
b5d6fbde | 543 | |
9d47c0a2 JP |
544 | if (ops->switchdev_fib_ipv4_del) { |
545 | err = ops->switchdev_fib_ipv4_del(dev, htonl(dst), dst_len, | |
546 | fi, tos, type, tb_id); | |
b5d6fbde SF |
547 | if (!err) |
548 | fi->fib_flags &= ~RTNH_F_EXTERNAL; | |
549 | } | |
550 | ||
551 | return err; | |
5e8d9049 | 552 | } |
ebb9a03a | 553 | EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_del); |
8e05fd71 SF |
554 | |
555 | /** | |
ebb9a03a | 556 | * switchdev_fib_ipv4_abort - Abort an IPv4 FIB operation |
8e05fd71 SF |
557 | * |
558 | * @fi: route FIB info structure | |
559 | */ | |
ebb9a03a | 560 | void switchdev_fib_ipv4_abort(struct fib_info *fi) |
8e05fd71 SF |
561 | { |
562 | /* There was a problem installing this route to the offload | |
563 | * device. For now, until we come up with more refined | |
564 | * policy handling, abruptly end IPv4 fib offloading for | |
565 | * for entire net by flushing offload device(s) of all | |
566 | * IPv4 routes, and mark IPv4 fib offloading broken from | |
567 | * this point forward. | |
568 | */ | |
569 | ||
570 | fib_flush_external(fi->fib_net); | |
571 | fi->fib_net->ipv4.fib_offload_disabled = true; | |
572 | } | |
ebb9a03a | 573 | EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_abort); |