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1/*
2 * drivers/net/bond/bond_netlink.c - Netlink interface for bonding
3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13
14#include <linux/module.h>
15#include <linux/errno.h>
16#include <linux/netdevice.h>
17#include <linux/etherdevice.h>
18#include <linux/if_link.h>
19#include <linux/if_ether.h>
20#include <net/netlink.h>
21#include <net/rtnetlink.h>
22#include "bonding.h"
23
24static size_t bond_get_slave_size(const struct net_device *bond_dev,
25 const struct net_device *slave_dev)
26{
27 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_STATE */
28 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_MII_STATUS */
29 nla_total_size(sizeof(u32)) + /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */
30 nla_total_size(MAX_ADDR_LEN) + /* IFLA_BOND_SLAVE_PERM_HWADDR */
31 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_QUEUE_ID */
32 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
33 0;
34}
35
36static int bond_fill_slave_info(struct sk_buff *skb,
37 const struct net_device *bond_dev,
38 const struct net_device *slave_dev)
39{
40 struct slave *slave = bond_slave_get_rtnl(slave_dev);
41
42 if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave)))
43 goto nla_put_failure;
44
45 if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link))
46 goto nla_put_failure;
47
48 if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT,
49 slave->link_failure_count))
50 goto nla_put_failure;
51
52 if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR,
53 slave_dev->addr_len, slave->perm_hwaddr))
54 goto nla_put_failure;
55
56 if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id))
57 goto nla_put_failure;
58
59 if (slave->bond->params.mode == BOND_MODE_8023AD) {
60 const struct aggregator *agg;
61
62 agg = SLAVE_AD_INFO(slave).port.aggregator;
63 if (agg)
64 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID,
65 agg->aggregator_identifier))
66 goto nla_put_failure;
67 }
68
69 return 0;
70
71nla_put_failure:
72 return -EMSGSIZE;
73}
74
75static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
76 [IFLA_BOND_MODE] = { .type = NLA_U8 },
77 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },
78 [IFLA_BOND_MIIMON] = { .type = NLA_U32 },
79 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
80 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
81 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
82 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
83 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
84 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
85 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
86 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
87 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
88 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
89 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
90 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
91 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
92 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
93 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
94 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
95 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
96 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },
97 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },
98 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },
99};
100
101static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
102{
103 if (tb[IFLA_ADDRESS]) {
104 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
105 return -EINVAL;
106 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
107 return -EADDRNOTAVAIL;
108 }
109 return 0;
110}
111
112static int bond_changelink(struct net_device *bond_dev,
113 struct nlattr *tb[], struct nlattr *data[])
114{
115 struct bonding *bond = netdev_priv(bond_dev);
116 struct bond_opt_value newval;
117 int miimon = 0;
118 int err;
119
120 if (!data)
121 return 0;
122
123 if (data[IFLA_BOND_MODE]) {
124 int mode = nla_get_u8(data[IFLA_BOND_MODE]);
125
126 bond_opt_initval(&newval, mode);
127 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval);
128 if (err)
129 return err;
130 }
131 if (data[IFLA_BOND_ACTIVE_SLAVE]) {
132 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
133 struct net_device *slave_dev;
134 char *active_slave = "";
135
136 if (ifindex != 0) {
137 slave_dev = __dev_get_by_index(dev_net(bond_dev),
138 ifindex);
139 if (!slave_dev)
140 return -ENODEV;
141 active_slave = slave_dev->name;
142 }
143 bond_opt_initstr(&newval, active_slave);
144 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval);
145 if (err)
146 return err;
147 }
148 if (data[IFLA_BOND_MIIMON]) {
149 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
150
151 bond_opt_initval(&newval, miimon);
152 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval);
153 if (err)
154 return err;
155 }
156 if (data[IFLA_BOND_UPDELAY]) {
157 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
158
159 bond_opt_initval(&newval, updelay);
160 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval);
161 if (err)
162 return err;
163 }
164 if (data[IFLA_BOND_DOWNDELAY]) {
165 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
166
167 bond_opt_initval(&newval, downdelay);
168 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
169 if (err)
170 return err;
171 }
172 if (data[IFLA_BOND_USE_CARRIER]) {
173 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
174
175 bond_opt_initval(&newval, use_carrier);
176 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval);
177 if (err)
178 return err;
179 }
180 if (data[IFLA_BOND_ARP_INTERVAL]) {
181 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
182
183 if (arp_interval && miimon) {
184 pr_err("%s: ARP monitoring cannot be used with MII monitoring\n",
185 bond->dev->name);
186 return -EINVAL;
187 }
188
189 bond_opt_initval(&newval, arp_interval);
190 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
191 if (err)
192 return err;
193 }
194 if (data[IFLA_BOND_ARP_IP_TARGET]) {
195 struct nlattr *attr;
196 int i = 0, rem;
197
198 bond_option_arp_ip_targets_clear(bond);
199 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
200 __be32 target = nla_get_be32(attr);
201
202 bond_opt_initval(&newval, (__force u64)target);
203 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
204 &newval);
205 if (err)
206 break;
207 i++;
208 }
209 if (i == 0 && bond->params.arp_interval)
210 pr_warn("%s: Removing last arp target with arp_interval on\n",
211 bond->dev->name);
212 if (err)
213 return err;
214 }
215 if (data[IFLA_BOND_ARP_VALIDATE]) {
216 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
217
218 if (arp_validate && miimon) {
219 pr_err("%s: ARP validating cannot be used with MII monitoring\n",
220 bond->dev->name);
221 return -EINVAL;
222 }
223
224 bond_opt_initval(&newval, arp_validate);
225 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval);
226 if (err)
227 return err;
228 }
229 if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
230 int arp_all_targets =
231 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
232
233 bond_opt_initval(&newval, arp_all_targets);
234 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval);
235 if (err)
236 return err;
237 }
238 if (data[IFLA_BOND_PRIMARY]) {
239 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
240 struct net_device *dev;
241 char *primary = "";
242
243 dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
244 if (dev)
245 primary = dev->name;
246
247 bond_opt_initstr(&newval, primary);
248 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval);
249 if (err)
250 return err;
251 }
252 if (data[IFLA_BOND_PRIMARY_RESELECT]) {
253 int primary_reselect =
254 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
255
256 bond_opt_initval(&newval, primary_reselect);
257 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval);
258 if (err)
259 return err;
260 }
261 if (data[IFLA_BOND_FAIL_OVER_MAC]) {
262 int fail_over_mac =
263 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
264
265 bond_opt_initval(&newval, fail_over_mac);
266 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval);
267 if (err)
268 return err;
269 }
270 if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
271 int xmit_hash_policy =
272 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
273
274 bond_opt_initval(&newval, xmit_hash_policy);
275 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval);
276 if (err)
277 return err;
278 }
279 if (data[IFLA_BOND_RESEND_IGMP]) {
280 int resend_igmp =
281 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
282
283 bond_opt_initval(&newval, resend_igmp);
284 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval);
285 if (err)
286 return err;
287 }
288 if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
289 int num_peer_notif =
290 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
291
292 bond_opt_initval(&newval, num_peer_notif);
293 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval);
294 if (err)
295 return err;
296 }
297 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
298 int all_slaves_active =
299 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
300
301 bond_opt_initval(&newval, all_slaves_active);
302 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval);
303 if (err)
304 return err;
305 }
306 if (data[IFLA_BOND_MIN_LINKS]) {
307 int min_links =
308 nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
309
310 bond_opt_initval(&newval, min_links);
311 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval);
312 if (err)
313 return err;
314 }
315 if (data[IFLA_BOND_LP_INTERVAL]) {
316 int lp_interval =
317 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
318
319 bond_opt_initval(&newval, lp_interval);
320 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval);
321 if (err)
322 return err;
323 }
324 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
325 int packets_per_slave =
326 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
327
328 bond_opt_initval(&newval, packets_per_slave);
329 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
330 if (err)
331 return err;
332 }
333 if (data[IFLA_BOND_AD_LACP_RATE]) {
334 int lacp_rate =
335 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
336
337 bond_opt_initval(&newval, lacp_rate);
338 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval);
339 if (err)
340 return err;
341 }
342 if (data[IFLA_BOND_AD_SELECT]) {
343 int ad_select =
344 nla_get_u8(data[IFLA_BOND_AD_SELECT]);
345
346 bond_opt_initval(&newval, ad_select);
347 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval);
348 if (err)
349 return err;
350 }
351 return 0;
352}
353
354static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
355 struct nlattr *tb[], struct nlattr *data[])
356{
357 int err;
358
359 err = bond_changelink(bond_dev, tb, data);
360 if (err < 0)
361 return err;
362
363 return register_netdevice(bond_dev);
364}
365
366static size_t bond_get_size(const struct net_device *bond_dev)
367{
368 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */
369 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */
370 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */
371 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */
372 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */
373 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */
374 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */
375 /* IFLA_BOND_ARP_IP_TARGET */
376 nla_total_size(sizeof(struct nlattr)) +
377 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
378 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */
379 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */
380 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */
381 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */
382 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */
383 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */
384 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */
385 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */
386 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */
387 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */
388 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */
389 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */
390 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */
391 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */
392 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
393 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
394 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
395 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
396 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
397 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
398 0;
399}
400
401static int bond_fill_info(struct sk_buff *skb,
402 const struct net_device *bond_dev)
403{
404 struct bonding *bond = netdev_priv(bond_dev);
405 struct net_device *slave_dev = bond_option_active_slave_get(bond);
406 struct nlattr *targets;
407 unsigned int packets_per_slave;
408 int i, targets_added;
409
410 if (nla_put_u8(skb, IFLA_BOND_MODE, bond->params.mode))
411 goto nla_put_failure;
412
413 if (slave_dev &&
414 nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, slave_dev->ifindex))
415 goto nla_put_failure;
416
417 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
418 goto nla_put_failure;
419
420 if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
421 bond->params.updelay * bond->params.miimon))
422 goto nla_put_failure;
423
424 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
425 bond->params.downdelay * bond->params.miimon))
426 goto nla_put_failure;
427
428 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
429 goto nla_put_failure;
430
431 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
432 goto nla_put_failure;
433
434 targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
435 if (!targets)
436 goto nla_put_failure;
437
438 targets_added = 0;
439 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
440 if (bond->params.arp_targets[i]) {
441 nla_put_be32(skb, i, bond->params.arp_targets[i]);
442 targets_added = 1;
443 }
444 }
445
446 if (targets_added)
447 nla_nest_end(skb, targets);
448 else
449 nla_nest_cancel(skb, targets);
450
451 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
452 goto nla_put_failure;
453
454 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
455 bond->params.arp_all_targets))
456 goto nla_put_failure;
457
458 if (bond->primary_slave &&
459 nla_put_u32(skb, IFLA_BOND_PRIMARY,
460 bond->primary_slave->dev->ifindex))
461 goto nla_put_failure;
462
463 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
464 bond->params.primary_reselect))
465 goto nla_put_failure;
466
467 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
468 bond->params.fail_over_mac))
469 goto nla_put_failure;
470
471 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
472 bond->params.xmit_policy))
473 goto nla_put_failure;
474
475 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
476 bond->params.resend_igmp))
477 goto nla_put_failure;
478
479 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
480 bond->params.num_peer_notif))
481 goto nla_put_failure;
482
483 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
484 bond->params.all_slaves_active))
485 goto nla_put_failure;
486
487 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
488 bond->params.min_links))
489 goto nla_put_failure;
490
491 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
492 bond->params.lp_interval))
493 goto nla_put_failure;
494
495 packets_per_slave = bond->params.packets_per_slave;
496 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
497 packets_per_slave))
498 goto nla_put_failure;
499
500 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
501 bond->params.lacp_fast))
502 goto nla_put_failure;
503
504 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
505 bond->params.ad_select))
506 goto nla_put_failure;
507
508 if (bond->params.mode == BOND_MODE_8023AD) {
509 struct ad_info info;
510
511 if (!bond_3ad_get_active_agg_info(bond, &info)) {
512 struct nlattr *nest;
513
514 nest = nla_nest_start(skb, IFLA_BOND_AD_INFO);
515 if (!nest)
516 goto nla_put_failure;
517
518 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
519 info.aggregator_id))
520 goto nla_put_failure;
521 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
522 info.ports))
523 goto nla_put_failure;
524 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
525 info.actor_key))
526 goto nla_put_failure;
527 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
528 info.partner_key))
529 goto nla_put_failure;
530 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
531 sizeof(info.partner_system),
532 &info.partner_system))
533 goto nla_put_failure;
534
535 nla_nest_end(skb, nest);
536 }
537 }
538
539 return 0;
540
541nla_put_failure:
542 return -EMSGSIZE;
543}
544
545struct rtnl_link_ops bond_link_ops __read_mostly = {
546 .kind = "bond",
547 .priv_size = sizeof(struct bonding),
548 .setup = bond_setup,
549 .maxtype = IFLA_BOND_MAX,
550 .policy = bond_policy,
551 .validate = bond_validate,
552 .newlink = bond_newlink,
553 .changelink = bond_changelink,
554 .get_size = bond_get_size,
555 .fill_info = bond_fill_info,
556 .get_num_tx_queues = bond_get_num_tx_queues,
557 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number
558 as for TX queues */
559 .get_slave_size = bond_get_slave_size,
560 .fill_slave_info = bond_fill_slave_info,
561};
562
563int __init bond_netlink_init(void)
564{
565 return rtnl_link_register(&bond_link_ops);
566}
567
568void bond_netlink_fini(void)
569{
570 rtnl_link_unregister(&bond_link_ops);
571}
572
573MODULE_ALIAS_RTNL_LINK("bond");
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * drivers/net/bond/bond_netlink.c - Netlink interface for bonding
4 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
5 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
6 */
7
8#include <linux/module.h>
9#include <linux/errno.h>
10#include <linux/netdevice.h>
11#include <linux/etherdevice.h>
12#include <linux/if_link.h>
13#include <linux/if_ether.h>
14#include <net/netlink.h>
15#include <net/rtnetlink.h>
16#include <net/bonding.h>
17#include <net/ipv6.h>
18
19static size_t bond_get_slave_size(const struct net_device *bond_dev,
20 const struct net_device *slave_dev)
21{
22 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_STATE */
23 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_MII_STATUS */
24 nla_total_size(sizeof(u32)) + /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */
25 nla_total_size(MAX_ADDR_LEN) + /* IFLA_BOND_SLAVE_PERM_HWADDR */
26 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_QUEUE_ID */
27 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
28 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE */
29 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE */
30 nla_total_size(sizeof(s32)) + /* IFLA_BOND_SLAVE_PRIO */
31 0;
32}
33
34static int bond_fill_slave_info(struct sk_buff *skb,
35 const struct net_device *bond_dev,
36 const struct net_device *slave_dev)
37{
38 struct slave *slave = bond_slave_get_rtnl(slave_dev);
39
40 if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave)))
41 goto nla_put_failure;
42
43 if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link))
44 goto nla_put_failure;
45
46 if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT,
47 slave->link_failure_count))
48 goto nla_put_failure;
49
50 if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR,
51 slave_dev->addr_len, slave->perm_hwaddr))
52 goto nla_put_failure;
53
54 if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID,
55 READ_ONCE(slave->queue_id)))
56 goto nla_put_failure;
57
58 if (nla_put_s32(skb, IFLA_BOND_SLAVE_PRIO, slave->prio))
59 goto nla_put_failure;
60
61 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
62 const struct aggregator *agg;
63 const struct port *ad_port;
64
65 ad_port = &SLAVE_AD_INFO(slave)->port;
66 agg = SLAVE_AD_INFO(slave)->port.aggregator;
67 if (agg) {
68 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID,
69 agg->aggregator_identifier))
70 goto nla_put_failure;
71 if (nla_put_u8(skb,
72 IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE,
73 ad_port->actor_oper_port_state))
74 goto nla_put_failure;
75 if (nla_put_u16(skb,
76 IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE,
77 ad_port->partner_oper.port_state))
78 goto nla_put_failure;
79 }
80 }
81
82 return 0;
83
84nla_put_failure:
85 return -EMSGSIZE;
86}
87
88/* Limit the max delay range to 300s */
89static const struct netlink_range_validation delay_range = {
90 .max = 300000,
91};
92
93static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
94 [IFLA_BOND_MODE] = { .type = NLA_U8 },
95 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },
96 [IFLA_BOND_MIIMON] = { .type = NLA_U32 },
97 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
98 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
99 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
100 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
101 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
102 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
103 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
104 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
105 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
106 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
107 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
108 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
109 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
110 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
111 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
112 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
113 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
114 [IFLA_BOND_AD_LACP_ACTIVE] = { .type = NLA_U8 },
115 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },
116 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },
117 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },
118 [IFLA_BOND_AD_ACTOR_SYS_PRIO] = { .type = NLA_U16 },
119 [IFLA_BOND_AD_USER_PORT_KEY] = { .type = NLA_U16 },
120 [IFLA_BOND_AD_ACTOR_SYSTEM] = { .type = NLA_BINARY,
121 .len = ETH_ALEN },
122 [IFLA_BOND_TLB_DYNAMIC_LB] = { .type = NLA_U8 },
123 [IFLA_BOND_PEER_NOTIF_DELAY] = NLA_POLICY_FULL_RANGE(NLA_U32, &delay_range),
124 [IFLA_BOND_MISSED_MAX] = { .type = NLA_U8 },
125 [IFLA_BOND_NS_IP6_TARGET] = { .type = NLA_NESTED },
126 [IFLA_BOND_COUPLED_CONTROL] = { .type = NLA_U8 },
127};
128
129static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = {
130 [IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 },
131 [IFLA_BOND_SLAVE_PRIO] = { .type = NLA_S32 },
132};
133
134static int bond_validate(struct nlattr *tb[], struct nlattr *data[],
135 struct netlink_ext_ack *extack)
136{
137 if (tb[IFLA_ADDRESS]) {
138 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
139 return -EINVAL;
140 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
141 return -EADDRNOTAVAIL;
142 }
143 return 0;
144}
145
146static int bond_slave_changelink(struct net_device *bond_dev,
147 struct net_device *slave_dev,
148 struct nlattr *tb[], struct nlattr *data[],
149 struct netlink_ext_ack *extack)
150{
151 struct bonding *bond = netdev_priv(bond_dev);
152 struct bond_opt_value newval;
153 int err;
154
155 if (!data)
156 return 0;
157
158 if (data[IFLA_BOND_SLAVE_QUEUE_ID]) {
159 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]);
160 char queue_id_str[IFNAMSIZ + 7];
161
162 /* queue_id option setting expects slave_name:queue_id */
163 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n",
164 slave_dev->name, queue_id);
165 bond_opt_initstr(&newval, queue_id_str);
166 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval,
167 data[IFLA_BOND_SLAVE_QUEUE_ID], extack);
168 if (err)
169 return err;
170 }
171
172 if (data[IFLA_BOND_SLAVE_PRIO]) {
173 int prio = nla_get_s32(data[IFLA_BOND_SLAVE_PRIO]);
174
175 bond_opt_slave_initval(&newval, &slave_dev, prio);
176 err = __bond_opt_set(bond, BOND_OPT_PRIO, &newval,
177 data[IFLA_BOND_SLAVE_PRIO], extack);
178 if (err)
179 return err;
180 }
181
182 return 0;
183}
184
185static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[],
186 struct nlattr *data[],
187 struct netlink_ext_ack *extack)
188{
189 struct bonding *bond = netdev_priv(bond_dev);
190 struct bond_opt_value newval;
191 int miimon = 0;
192 int err;
193
194 if (!data)
195 return 0;
196
197 if (data[IFLA_BOND_MODE]) {
198 int mode = nla_get_u8(data[IFLA_BOND_MODE]);
199
200 bond_opt_initval(&newval, mode);
201 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval,
202 data[IFLA_BOND_MODE], extack);
203 if (err)
204 return err;
205 }
206 if (data[IFLA_BOND_ACTIVE_SLAVE]) {
207 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
208 struct net_device *slave_dev;
209 char *active_slave = "";
210
211 if (ifindex != 0) {
212 slave_dev = __dev_get_by_index(dev_net(bond_dev),
213 ifindex);
214 if (!slave_dev)
215 return -ENODEV;
216 active_slave = slave_dev->name;
217 }
218 bond_opt_initstr(&newval, active_slave);
219 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval,
220 data[IFLA_BOND_ACTIVE_SLAVE], extack);
221 if (err)
222 return err;
223 }
224 if (data[IFLA_BOND_MIIMON]) {
225 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
226
227 bond_opt_initval(&newval, miimon);
228 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval,
229 data[IFLA_BOND_MIIMON], extack);
230 if (err)
231 return err;
232 }
233 if (data[IFLA_BOND_UPDELAY]) {
234 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
235
236 bond_opt_initval(&newval, updelay);
237 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval,
238 data[IFLA_BOND_UPDELAY], extack);
239 if (err)
240 return err;
241 }
242 if (data[IFLA_BOND_DOWNDELAY]) {
243 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
244
245 bond_opt_initval(&newval, downdelay);
246 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval,
247 data[IFLA_BOND_DOWNDELAY], extack);
248 if (err)
249 return err;
250 }
251 if (data[IFLA_BOND_PEER_NOTIF_DELAY]) {
252 int delay = nla_get_u32(data[IFLA_BOND_PEER_NOTIF_DELAY]);
253
254 bond_opt_initval(&newval, delay);
255 err = __bond_opt_set(bond, BOND_OPT_PEER_NOTIF_DELAY, &newval,
256 data[IFLA_BOND_PEER_NOTIF_DELAY], extack);
257 if (err)
258 return err;
259 }
260 if (data[IFLA_BOND_USE_CARRIER]) {
261 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
262
263 bond_opt_initval(&newval, use_carrier);
264 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval,
265 data[IFLA_BOND_USE_CARRIER], extack);
266 if (err)
267 return err;
268 }
269 if (data[IFLA_BOND_ARP_INTERVAL]) {
270 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
271
272 if (arp_interval && miimon) {
273 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL],
274 "ARP monitoring cannot be used with MII monitoring");
275 return -EINVAL;
276 }
277
278 bond_opt_initval(&newval, arp_interval);
279 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval,
280 data[IFLA_BOND_ARP_INTERVAL], extack);
281 if (err)
282 return err;
283 }
284 if (data[IFLA_BOND_ARP_IP_TARGET]) {
285 struct nlattr *attr;
286 int i = 0, rem;
287
288 bond_option_arp_ip_targets_clear(bond);
289 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
290 __be32 target;
291
292 if (nla_len(attr) < sizeof(target))
293 return -EINVAL;
294
295 target = nla_get_be32(attr);
296
297 bond_opt_initval(&newval, (__force u64)target);
298 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
299 &newval,
300 data[IFLA_BOND_ARP_IP_TARGET],
301 extack);
302 if (err)
303 break;
304 i++;
305 }
306 if (i == 0 && bond->params.arp_interval)
307 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
308 if (err)
309 return err;
310 }
311#if IS_ENABLED(CONFIG_IPV6)
312 if (data[IFLA_BOND_NS_IP6_TARGET]) {
313 struct nlattr *attr;
314 int i = 0, rem;
315
316 bond_option_ns_ip6_targets_clear(bond);
317 nla_for_each_nested(attr, data[IFLA_BOND_NS_IP6_TARGET], rem) {
318 struct in6_addr addr6;
319
320 if (nla_len(attr) < sizeof(addr6)) {
321 NL_SET_ERR_MSG(extack, "Invalid IPv6 address");
322 return -EINVAL;
323 }
324
325 addr6 = nla_get_in6_addr(attr);
326
327 bond_opt_initextra(&newval, &addr6, sizeof(addr6));
328 err = __bond_opt_set(bond, BOND_OPT_NS_TARGETS,
329 &newval,
330 data[IFLA_BOND_NS_IP6_TARGET],
331 extack);
332 if (err)
333 break;
334 i++;
335 }
336 if (i == 0 && bond->params.arp_interval)
337 netdev_warn(bond->dev, "Removing last ns target with arp_interval on\n");
338 if (err)
339 return err;
340 }
341#endif
342 if (data[IFLA_BOND_ARP_VALIDATE]) {
343 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
344
345 if (arp_validate && miimon) {
346 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL],
347 "ARP validating cannot be used with MII monitoring");
348 return -EINVAL;
349 }
350
351 bond_opt_initval(&newval, arp_validate);
352 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval,
353 data[IFLA_BOND_ARP_VALIDATE], extack);
354 if (err)
355 return err;
356 }
357 if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
358 int arp_all_targets =
359 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
360
361 bond_opt_initval(&newval, arp_all_targets);
362 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval,
363 data[IFLA_BOND_ARP_ALL_TARGETS], extack);
364 if (err)
365 return err;
366 }
367 if (data[IFLA_BOND_PRIMARY]) {
368 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
369 struct net_device *dev;
370 char *primary = "";
371
372 dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
373 if (dev)
374 primary = dev->name;
375
376 bond_opt_initstr(&newval, primary);
377 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval,
378 data[IFLA_BOND_PRIMARY], extack);
379 if (err)
380 return err;
381 }
382 if (data[IFLA_BOND_PRIMARY_RESELECT]) {
383 int primary_reselect =
384 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
385
386 bond_opt_initval(&newval, primary_reselect);
387 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval,
388 data[IFLA_BOND_PRIMARY_RESELECT], extack);
389 if (err)
390 return err;
391 }
392 if (data[IFLA_BOND_FAIL_OVER_MAC]) {
393 int fail_over_mac =
394 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
395
396 bond_opt_initval(&newval, fail_over_mac);
397 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval,
398 data[IFLA_BOND_FAIL_OVER_MAC], extack);
399 if (err)
400 return err;
401 }
402 if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
403 int xmit_hash_policy =
404 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
405
406 bond_opt_initval(&newval, xmit_hash_policy);
407 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval,
408 data[IFLA_BOND_XMIT_HASH_POLICY], extack);
409 if (err)
410 return err;
411 }
412 if (data[IFLA_BOND_RESEND_IGMP]) {
413 int resend_igmp =
414 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
415
416 bond_opt_initval(&newval, resend_igmp);
417 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval,
418 data[IFLA_BOND_RESEND_IGMP], extack);
419 if (err)
420 return err;
421 }
422 if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
423 int num_peer_notif =
424 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
425
426 bond_opt_initval(&newval, num_peer_notif);
427 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval,
428 data[IFLA_BOND_NUM_PEER_NOTIF], extack);
429 if (err)
430 return err;
431 }
432 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
433 int all_slaves_active =
434 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
435
436 bond_opt_initval(&newval, all_slaves_active);
437 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval,
438 data[IFLA_BOND_ALL_SLAVES_ACTIVE], extack);
439 if (err)
440 return err;
441 }
442 if (data[IFLA_BOND_MIN_LINKS]) {
443 int min_links =
444 nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
445
446 bond_opt_initval(&newval, min_links);
447 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval,
448 data[IFLA_BOND_MIN_LINKS], extack);
449 if (err)
450 return err;
451 }
452 if (data[IFLA_BOND_LP_INTERVAL]) {
453 int lp_interval =
454 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
455
456 bond_opt_initval(&newval, lp_interval);
457 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval,
458 data[IFLA_BOND_LP_INTERVAL], extack);
459 if (err)
460 return err;
461 }
462 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
463 int packets_per_slave =
464 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
465
466 bond_opt_initval(&newval, packets_per_slave);
467 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval,
468 data[IFLA_BOND_PACKETS_PER_SLAVE], extack);
469 if (err)
470 return err;
471 }
472
473 if (data[IFLA_BOND_AD_LACP_ACTIVE]) {
474 int lacp_active = nla_get_u8(data[IFLA_BOND_AD_LACP_ACTIVE]);
475
476 bond_opt_initval(&newval, lacp_active);
477 err = __bond_opt_set(bond, BOND_OPT_LACP_ACTIVE, &newval,
478 data[IFLA_BOND_AD_LACP_ACTIVE], extack);
479 if (err)
480 return err;
481 }
482
483 if (data[IFLA_BOND_AD_LACP_RATE]) {
484 int lacp_rate =
485 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
486
487 bond_opt_initval(&newval, lacp_rate);
488 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval,
489 data[IFLA_BOND_AD_LACP_RATE], extack);
490 if (err)
491 return err;
492 }
493 if (data[IFLA_BOND_AD_SELECT]) {
494 int ad_select =
495 nla_get_u8(data[IFLA_BOND_AD_SELECT]);
496
497 bond_opt_initval(&newval, ad_select);
498 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval,
499 data[IFLA_BOND_AD_SELECT], extack);
500 if (err)
501 return err;
502 }
503 if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) {
504 int actor_sys_prio =
505 nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]);
506
507 bond_opt_initval(&newval, actor_sys_prio);
508 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval,
509 data[IFLA_BOND_AD_ACTOR_SYS_PRIO], extack);
510 if (err)
511 return err;
512 }
513 if (data[IFLA_BOND_AD_USER_PORT_KEY]) {
514 int port_key =
515 nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]);
516
517 bond_opt_initval(&newval, port_key);
518 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval,
519 data[IFLA_BOND_AD_USER_PORT_KEY], extack);
520 if (err)
521 return err;
522 }
523 if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) {
524 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN)
525 return -EINVAL;
526
527 bond_opt_initval(&newval,
528 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM]));
529 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval,
530 data[IFLA_BOND_AD_ACTOR_SYSTEM], extack);
531 if (err)
532 return err;
533 }
534 if (data[IFLA_BOND_TLB_DYNAMIC_LB]) {
535 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]);
536
537 bond_opt_initval(&newval, dynamic_lb);
538 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval,
539 data[IFLA_BOND_TLB_DYNAMIC_LB], extack);
540 if (err)
541 return err;
542 }
543
544 if (data[IFLA_BOND_MISSED_MAX]) {
545 int missed_max = nla_get_u8(data[IFLA_BOND_MISSED_MAX]);
546
547 bond_opt_initval(&newval, missed_max);
548 err = __bond_opt_set(bond, BOND_OPT_MISSED_MAX, &newval,
549 data[IFLA_BOND_MISSED_MAX], extack);
550 if (err)
551 return err;
552 }
553
554 if (data[IFLA_BOND_COUPLED_CONTROL]) {
555 int coupled_control = nla_get_u8(data[IFLA_BOND_COUPLED_CONTROL]);
556
557 bond_opt_initval(&newval, coupled_control);
558 err = __bond_opt_set(bond, BOND_OPT_COUPLED_CONTROL, &newval,
559 data[IFLA_BOND_COUPLED_CONTROL], extack);
560 if (err)
561 return err;
562 }
563
564 return 0;
565}
566
567static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
568 struct nlattr *tb[], struct nlattr *data[],
569 struct netlink_ext_ack *extack)
570{
571 int err;
572
573 err = bond_changelink(bond_dev, tb, data, extack);
574 if (err < 0)
575 return err;
576
577 err = register_netdevice(bond_dev);
578 if (!err) {
579 struct bonding *bond = netdev_priv(bond_dev);
580
581 netif_carrier_off(bond_dev);
582 bond_work_init_all(bond);
583 }
584
585 return err;
586}
587
588static size_t bond_get_size(const struct net_device *bond_dev)
589{
590 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */
591 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */
592 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */
593 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */
594 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */
595 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */
596 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */
597 /* IFLA_BOND_ARP_IP_TARGET */
598 nla_total_size(sizeof(struct nlattr)) +
599 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
600 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */
601 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */
602 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */
603 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */
604 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */
605 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */
606 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */
607 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */
608 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */
609 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */
610 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */
611 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */
612 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_ACTIVE */
613 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */
614 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */
615 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
616 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
617 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
618 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
619 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
620 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
621 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */
622 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */
623 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */
624 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */
625 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PEER_NOTIF_DELAY */
626 nla_total_size(sizeof(u8)) + /* IFLA_BOND_MISSED_MAX */
627 /* IFLA_BOND_NS_IP6_TARGET */
628 nla_total_size(sizeof(struct nlattr)) +
629 nla_total_size(sizeof(struct in6_addr)) * BOND_MAX_NS_TARGETS +
630 nla_total_size(sizeof(u8)) + /* IFLA_BOND_COUPLED_CONTROL */
631 0;
632}
633
634static int bond_option_active_slave_get_ifindex(struct bonding *bond)
635{
636 const struct net_device *slave;
637 int ifindex;
638
639 rcu_read_lock();
640 slave = bond_option_active_slave_get_rcu(bond);
641 ifindex = slave ? slave->ifindex : 0;
642 rcu_read_unlock();
643 return ifindex;
644}
645
646static int bond_fill_info(struct sk_buff *skb,
647 const struct net_device *bond_dev)
648{
649 struct bonding *bond = netdev_priv(bond_dev);
650 unsigned int packets_per_slave;
651 int ifindex, i, targets_added;
652 struct nlattr *targets;
653 struct slave *primary;
654
655 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
656 goto nla_put_failure;
657
658 ifindex = bond_option_active_slave_get_ifindex(bond);
659 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))
660 goto nla_put_failure;
661
662 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
663 goto nla_put_failure;
664
665 if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
666 bond->params.updelay * bond->params.miimon))
667 goto nla_put_failure;
668
669 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
670 bond->params.downdelay * bond->params.miimon))
671 goto nla_put_failure;
672
673 if (nla_put_u32(skb, IFLA_BOND_PEER_NOTIF_DELAY,
674 bond->params.peer_notif_delay * bond->params.miimon))
675 goto nla_put_failure;
676
677 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
678 goto nla_put_failure;
679
680 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
681 goto nla_put_failure;
682
683 targets = nla_nest_start_noflag(skb, IFLA_BOND_ARP_IP_TARGET);
684 if (!targets)
685 goto nla_put_failure;
686
687 targets_added = 0;
688 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
689 if (bond->params.arp_targets[i]) {
690 if (nla_put_be32(skb, i, bond->params.arp_targets[i]))
691 goto nla_put_failure;
692 targets_added = 1;
693 }
694 }
695
696 if (targets_added)
697 nla_nest_end(skb, targets);
698 else
699 nla_nest_cancel(skb, targets);
700
701 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
702 goto nla_put_failure;
703
704 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
705 bond->params.arp_all_targets))
706 goto nla_put_failure;
707
708#if IS_ENABLED(CONFIG_IPV6)
709 targets = nla_nest_start(skb, IFLA_BOND_NS_IP6_TARGET);
710 if (!targets)
711 goto nla_put_failure;
712
713 targets_added = 0;
714 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) {
715 if (!ipv6_addr_any(&bond->params.ns_targets[i])) {
716 if (nla_put_in6_addr(skb, i, &bond->params.ns_targets[i]))
717 goto nla_put_failure;
718 targets_added = 1;
719 }
720 }
721
722 if (targets_added)
723 nla_nest_end(skb, targets);
724 else
725 nla_nest_cancel(skb, targets);
726#endif
727
728 primary = rtnl_dereference(bond->primary_slave);
729 if (primary &&
730 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex))
731 goto nla_put_failure;
732
733 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
734 bond->params.primary_reselect))
735 goto nla_put_failure;
736
737 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
738 bond->params.fail_over_mac))
739 goto nla_put_failure;
740
741 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
742 bond->params.xmit_policy))
743 goto nla_put_failure;
744
745 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
746 bond->params.resend_igmp))
747 goto nla_put_failure;
748
749 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
750 bond->params.num_peer_notif))
751 goto nla_put_failure;
752
753 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
754 bond->params.all_slaves_active))
755 goto nla_put_failure;
756
757 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
758 bond->params.min_links))
759 goto nla_put_failure;
760
761 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
762 bond->params.lp_interval))
763 goto nla_put_failure;
764
765 packets_per_slave = bond->params.packets_per_slave;
766 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
767 packets_per_slave))
768 goto nla_put_failure;
769
770 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_ACTIVE,
771 bond->params.lacp_active))
772 goto nla_put_failure;
773
774 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
775 bond->params.lacp_fast))
776 goto nla_put_failure;
777
778 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
779 bond->params.ad_select))
780 goto nla_put_failure;
781
782 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB,
783 bond->params.tlb_dynamic_lb))
784 goto nla_put_failure;
785
786 if (nla_put_u8(skb, IFLA_BOND_MISSED_MAX,
787 bond->params.missed_max))
788 goto nla_put_failure;
789
790 if (nla_put_u8(skb, IFLA_BOND_COUPLED_CONTROL,
791 bond->params.coupled_control))
792 goto nla_put_failure;
793
794 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
795 struct ad_info info;
796
797 if (capable(CAP_NET_ADMIN)) {
798 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO,
799 bond->params.ad_actor_sys_prio))
800 goto nla_put_failure;
801
802 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY,
803 bond->params.ad_user_port_key))
804 goto nla_put_failure;
805
806 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM,
807 ETH_ALEN, &bond->params.ad_actor_system))
808 goto nla_put_failure;
809 }
810 if (!bond_3ad_get_active_agg_info(bond, &info)) {
811 struct nlattr *nest;
812
813 nest = nla_nest_start_noflag(skb, IFLA_BOND_AD_INFO);
814 if (!nest)
815 goto nla_put_failure;
816
817 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
818 info.aggregator_id))
819 goto nla_put_failure;
820 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
821 info.ports))
822 goto nla_put_failure;
823 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
824 info.actor_key))
825 goto nla_put_failure;
826 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
827 info.partner_key))
828 goto nla_put_failure;
829 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
830 sizeof(info.partner_system),
831 &info.partner_system))
832 goto nla_put_failure;
833
834 nla_nest_end(skb, nest);
835 }
836 }
837
838 return 0;
839
840nla_put_failure:
841 return -EMSGSIZE;
842}
843
844static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr)
845{
846 switch (attr) {
847 case IFLA_STATS_LINK_XSTATS:
848 case IFLA_STATS_LINK_XSTATS_SLAVE:
849 break;
850 default:
851 return 0;
852 }
853
854 return bond_3ad_stats_size() + nla_total_size(0);
855}
856
857static int bond_fill_linkxstats(struct sk_buff *skb,
858 const struct net_device *dev,
859 int *prividx, int attr)
860{
861 struct nlattr *nla __maybe_unused;
862 struct slave *slave = NULL;
863 struct nlattr *nest, *nest2;
864 struct bonding *bond;
865
866 switch (attr) {
867 case IFLA_STATS_LINK_XSTATS:
868 bond = netdev_priv(dev);
869 break;
870 case IFLA_STATS_LINK_XSTATS_SLAVE:
871 slave = bond_slave_get_rtnl(dev);
872 if (!slave)
873 return 0;
874 bond = slave->bond;
875 break;
876 default:
877 return -EINVAL;
878 }
879
880 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BOND);
881 if (!nest)
882 return -EMSGSIZE;
883 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
884 struct bond_3ad_stats *stats;
885
886 if (slave)
887 stats = &SLAVE_AD_INFO(slave)->stats;
888 else
889 stats = &BOND_AD_INFO(bond).stats;
890
891 nest2 = nla_nest_start_noflag(skb, BOND_XSTATS_3AD);
892 if (!nest2) {
893 nla_nest_end(skb, nest);
894 return -EMSGSIZE;
895 }
896
897 if (bond_3ad_stats_fill(skb, stats)) {
898 nla_nest_cancel(skb, nest2);
899 nla_nest_end(skb, nest);
900 return -EMSGSIZE;
901 }
902 nla_nest_end(skb, nest2);
903 }
904 nla_nest_end(skb, nest);
905
906 return 0;
907}
908
909struct rtnl_link_ops bond_link_ops __read_mostly = {
910 .kind = "bond",
911 .priv_size = sizeof(struct bonding),
912 .setup = bond_setup,
913 .maxtype = IFLA_BOND_MAX,
914 .policy = bond_policy,
915 .validate = bond_validate,
916 .newlink = bond_newlink,
917 .changelink = bond_changelink,
918 .get_size = bond_get_size,
919 .fill_info = bond_fill_info,
920 .get_num_tx_queues = bond_get_num_tx_queues,
921 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number
922 as for TX queues */
923 .fill_linkxstats = bond_fill_linkxstats,
924 .get_linkxstats_size = bond_get_linkxstats_size,
925 .slave_maxtype = IFLA_BOND_SLAVE_MAX,
926 .slave_policy = bond_slave_policy,
927 .slave_changelink = bond_slave_changelink,
928 .get_slave_size = bond_get_slave_size,
929 .fill_slave_info = bond_fill_slave_info,
930};
931
932int __init bond_netlink_init(void)
933{
934 return rtnl_link_register(&bond_link_ops);
935}
936
937void bond_netlink_fini(void)
938{
939 rtnl_link_unregister(&bond_link_ops);
940}
941
942MODULE_ALIAS_RTNL_LINK("bond");