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,
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
84 nla_put_failure:
85 return -EMSGSIZE;
86 }
87
88 /* Limit the max delay range to 300s */
89 static const struct netlink_range_validation delay_range = {
90 .max = 300000,
91 };
92
93 static 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
129 static 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
bond_validate(struct nlattr * tb[],struct nlattr * data[],struct netlink_ext_ack * extack)134 static 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
bond_slave_changelink(struct net_device * bond_dev,struct net_device * slave_dev,struct nlattr * tb[],struct nlattr * data[],struct netlink_ext_ack * extack)146 static 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
bond_changelink(struct net_device * bond_dev,struct nlattr * tb[],struct nlattr * data[],struct netlink_ext_ack * extack)185 static 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
bond_newlink(struct net_device * bond_dev,struct rtnl_newlink_params * params,struct netlink_ext_ack * extack)567 static int bond_newlink(struct net_device *bond_dev,
568 struct rtnl_newlink_params *params,
569 struct netlink_ext_ack *extack)
570 {
571 struct nlattr **data = params->data;
572 struct nlattr **tb = params->tb;
573 int err;
574
575 err = bond_changelink(bond_dev, tb, data, extack);
576 if (err < 0)
577 return err;
578
579 err = register_netdevice(bond_dev);
580 if (!err) {
581 struct bonding *bond = netdev_priv(bond_dev);
582
583 netif_carrier_off(bond_dev);
584 bond_work_init_all(bond);
585 }
586
587 return err;
588 }
589
bond_get_size(const struct net_device * bond_dev)590 static size_t bond_get_size(const struct net_device *bond_dev)
591 {
592 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */
593 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */
594 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */
595 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */
596 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */
597 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */
598 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */
599 /* IFLA_BOND_ARP_IP_TARGET */
600 nla_total_size(sizeof(struct nlattr)) +
601 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
602 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */
603 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */
604 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */
605 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */
606 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */
607 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */
608 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */
609 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */
610 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */
611 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */
612 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */
613 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */
614 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_ACTIVE */
615 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */
616 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */
617 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
618 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
619 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
620 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
621 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
622 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
623 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */
624 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */
625 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */
626 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */
627 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PEER_NOTIF_DELAY */
628 nla_total_size(sizeof(u8)) + /* IFLA_BOND_MISSED_MAX */
629 /* IFLA_BOND_NS_IP6_TARGET */
630 nla_total_size(sizeof(struct nlattr)) +
631 nla_total_size(sizeof(struct in6_addr)) * BOND_MAX_NS_TARGETS +
632 nla_total_size(sizeof(u8)) + /* IFLA_BOND_COUPLED_CONTROL */
633 0;
634 }
635
bond_option_active_slave_get_ifindex(struct bonding * bond)636 static int bond_option_active_slave_get_ifindex(struct bonding *bond)
637 {
638 const struct net_device *slave;
639 int ifindex;
640
641 rcu_read_lock();
642 slave = bond_option_active_slave_get_rcu(bond);
643 ifindex = slave ? slave->ifindex : 0;
644 rcu_read_unlock();
645 return ifindex;
646 }
647
bond_fill_info(struct sk_buff * skb,const struct net_device * bond_dev)648 static int bond_fill_info(struct sk_buff *skb,
649 const struct net_device *bond_dev)
650 {
651 struct bonding *bond = netdev_priv(bond_dev);
652 unsigned int packets_per_slave;
653 int ifindex, i, targets_added;
654 struct nlattr *targets;
655 struct slave *primary;
656
657 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
658 goto nla_put_failure;
659
660 ifindex = bond_option_active_slave_get_ifindex(bond);
661 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))
662 goto nla_put_failure;
663
664 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
665 goto nla_put_failure;
666
667 if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
668 bond->params.updelay * bond->params.miimon))
669 goto nla_put_failure;
670
671 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
672 bond->params.downdelay * bond->params.miimon))
673 goto nla_put_failure;
674
675 if (nla_put_u32(skb, IFLA_BOND_PEER_NOTIF_DELAY,
676 bond->params.peer_notif_delay * bond->params.miimon))
677 goto nla_put_failure;
678
679 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
680 goto nla_put_failure;
681
682 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
683 goto nla_put_failure;
684
685 targets = nla_nest_start_noflag(skb, IFLA_BOND_ARP_IP_TARGET);
686 if (!targets)
687 goto nla_put_failure;
688
689 targets_added = 0;
690 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
691 if (bond->params.arp_targets[i]) {
692 if (nla_put_be32(skb, i, bond->params.arp_targets[i]))
693 goto nla_put_failure;
694 targets_added = 1;
695 }
696 }
697
698 if (targets_added)
699 nla_nest_end(skb, targets);
700 else
701 nla_nest_cancel(skb, targets);
702
703 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
704 goto nla_put_failure;
705
706 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
707 bond->params.arp_all_targets))
708 goto nla_put_failure;
709
710 #if IS_ENABLED(CONFIG_IPV6)
711 targets = nla_nest_start(skb, IFLA_BOND_NS_IP6_TARGET);
712 if (!targets)
713 goto nla_put_failure;
714
715 targets_added = 0;
716 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) {
717 if (!ipv6_addr_any(&bond->params.ns_targets[i])) {
718 if (nla_put_in6_addr(skb, i, &bond->params.ns_targets[i]))
719 goto nla_put_failure;
720 targets_added = 1;
721 }
722 }
723
724 if (targets_added)
725 nla_nest_end(skb, targets);
726 else
727 nla_nest_cancel(skb, targets);
728 #endif
729
730 primary = rtnl_dereference(bond->primary_slave);
731 if (primary &&
732 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex))
733 goto nla_put_failure;
734
735 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
736 bond->params.primary_reselect))
737 goto nla_put_failure;
738
739 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
740 bond->params.fail_over_mac))
741 goto nla_put_failure;
742
743 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
744 bond->params.xmit_policy))
745 goto nla_put_failure;
746
747 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
748 bond->params.resend_igmp))
749 goto nla_put_failure;
750
751 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
752 bond->params.num_peer_notif))
753 goto nla_put_failure;
754
755 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
756 bond->params.all_slaves_active))
757 goto nla_put_failure;
758
759 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
760 bond->params.min_links))
761 goto nla_put_failure;
762
763 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
764 bond->params.lp_interval))
765 goto nla_put_failure;
766
767 packets_per_slave = bond->params.packets_per_slave;
768 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
769 packets_per_slave))
770 goto nla_put_failure;
771
772 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_ACTIVE,
773 bond->params.lacp_active))
774 goto nla_put_failure;
775
776 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
777 bond->params.lacp_fast))
778 goto nla_put_failure;
779
780 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
781 bond->params.ad_select))
782 goto nla_put_failure;
783
784 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB,
785 bond->params.tlb_dynamic_lb))
786 goto nla_put_failure;
787
788 if (nla_put_u8(skb, IFLA_BOND_MISSED_MAX,
789 bond->params.missed_max))
790 goto nla_put_failure;
791
792 if (nla_put_u8(skb, IFLA_BOND_COUPLED_CONTROL,
793 bond->params.coupled_control))
794 goto nla_put_failure;
795
796 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
797 struct ad_info info;
798
799 if (capable(CAP_NET_ADMIN)) {
800 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO,
801 bond->params.ad_actor_sys_prio))
802 goto nla_put_failure;
803
804 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY,
805 bond->params.ad_user_port_key))
806 goto nla_put_failure;
807
808 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM,
809 ETH_ALEN, &bond->params.ad_actor_system))
810 goto nla_put_failure;
811 }
812 if (!bond_3ad_get_active_agg_info(bond, &info)) {
813 struct nlattr *nest;
814
815 nest = nla_nest_start_noflag(skb, IFLA_BOND_AD_INFO);
816 if (!nest)
817 goto nla_put_failure;
818
819 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
820 info.aggregator_id))
821 goto nla_put_failure;
822 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
823 info.ports))
824 goto nla_put_failure;
825 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
826 info.actor_key))
827 goto nla_put_failure;
828 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
829 info.partner_key))
830 goto nla_put_failure;
831 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
832 sizeof(info.partner_system),
833 &info.partner_system))
834 goto nla_put_failure;
835
836 nla_nest_end(skb, nest);
837 }
838 }
839
840 return 0;
841
842 nla_put_failure:
843 return -EMSGSIZE;
844 }
845
bond_get_linkxstats_size(const struct net_device * dev,int attr)846 static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr)
847 {
848 switch (attr) {
849 case IFLA_STATS_LINK_XSTATS:
850 case IFLA_STATS_LINK_XSTATS_SLAVE:
851 break;
852 default:
853 return 0;
854 }
855
856 return bond_3ad_stats_size() + nla_total_size(0);
857 }
858
bond_fill_linkxstats(struct sk_buff * skb,const struct net_device * dev,int * prividx,int attr)859 static int bond_fill_linkxstats(struct sk_buff *skb,
860 const struct net_device *dev,
861 int *prividx, int attr)
862 {
863 struct nlattr *nla __maybe_unused;
864 struct slave *slave = NULL;
865 struct nlattr *nest, *nest2;
866 struct bonding *bond;
867
868 switch (attr) {
869 case IFLA_STATS_LINK_XSTATS:
870 bond = netdev_priv(dev);
871 break;
872 case IFLA_STATS_LINK_XSTATS_SLAVE:
873 slave = bond_slave_get_rtnl(dev);
874 if (!slave)
875 return 0;
876 bond = slave->bond;
877 break;
878 default:
879 return -EINVAL;
880 }
881
882 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BOND);
883 if (!nest)
884 return -EMSGSIZE;
885 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
886 struct bond_3ad_stats *stats;
887
888 if (slave)
889 stats = &SLAVE_AD_INFO(slave)->stats;
890 else
891 stats = &BOND_AD_INFO(bond).stats;
892
893 nest2 = nla_nest_start_noflag(skb, BOND_XSTATS_3AD);
894 if (!nest2) {
895 nla_nest_end(skb, nest);
896 return -EMSGSIZE;
897 }
898
899 if (bond_3ad_stats_fill(skb, stats)) {
900 nla_nest_cancel(skb, nest2);
901 nla_nest_end(skb, nest);
902 return -EMSGSIZE;
903 }
904 nla_nest_end(skb, nest2);
905 }
906 nla_nest_end(skb, nest);
907
908 return 0;
909 }
910
911 struct rtnl_link_ops bond_link_ops __read_mostly = {
912 .kind = "bond",
913 .priv_size = sizeof(struct bonding),
914 .setup = bond_setup,
915 .maxtype = IFLA_BOND_MAX,
916 .policy = bond_policy,
917 .validate = bond_validate,
918 .newlink = bond_newlink,
919 .changelink = bond_changelink,
920 .get_size = bond_get_size,
921 .fill_info = bond_fill_info,
922 .get_num_tx_queues = bond_get_num_tx_queues,
923 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number
924 as for TX queues */
925 .fill_linkxstats = bond_fill_linkxstats,
926 .get_linkxstats_size = bond_get_linkxstats_size,
927 .slave_maxtype = IFLA_BOND_SLAVE_MAX,
928 .slave_policy = bond_slave_policy,
929 .slave_changelink = bond_slave_changelink,
930 .get_slave_size = bond_get_slave_size,
931 .fill_slave_info = bond_fill_slave_info,
932 };
933
bond_netlink_init(void)934 int __init bond_netlink_init(void)
935 {
936 return rtnl_link_register(&bond_link_ops);
937 }
938
bond_netlink_fini(void)939 void bond_netlink_fini(void)
940 {
941 rtnl_link_unregister(&bond_link_ops);
942 }
943
944 MODULE_ALIAS_RTNL_LINK("bond");
945