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