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

source code of linux/drivers/net/bonding/bond_netlink.c