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