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