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