2 * drivers/net/bond/bond_netlink.c - Netlink interface for bonding
3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/module.h>
13 #include <linux/errno.h>
14 #include <linux/netdevice.h>
15 #include <linux/etherdevice.h>
16 #include <linux/if_link.h>
17 #include <linux/if_ether.h>
18 #include <net/netlink.h>
19 #include <net/rtnetlink.h>
22 static size_t bond_get_slave_size(const struct net_device *bond_dev,
23 const struct net_device *slave_dev)
25 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_STATE */
26 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_MII_STATUS */
27 nla_total_size(sizeof(u32)) + /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */
28 nla_total_size(MAX_ADDR_LEN) + /* IFLA_BOND_SLAVE_PERM_HWADDR */
29 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_QUEUE_ID */
30 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
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)
38 struct slave *slave = bond_slave_get_rtnl(slave_dev);
40 if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave)))
43 if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link))
46 if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT,
47 slave->link_failure_count))
50 if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR,
51 slave_dev->addr_len, slave->perm_hwaddr))
54 if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id))
57 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
58 const struct aggregator *agg;
60 agg = SLAVE_AD_INFO(slave)->port.aggregator;
62 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID,
63 agg->aggregator_identifier))
73 static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
74 [IFLA_BOND_MODE] = { .type = NLA_U8 },
75 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },
76 [IFLA_BOND_MIIMON] = { .type = NLA_U32 },
77 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
78 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
79 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
80 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
81 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
82 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
83 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
84 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
85 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
86 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
87 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
88 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
89 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
90 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
91 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
92 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
93 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
94 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },
95 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },
96 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },
99 static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = {
100 [IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 },
103 static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
105 if (tb[IFLA_ADDRESS]) {
106 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
108 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
109 return -EADDRNOTAVAIL;
114 static int bond_slave_changelink(struct net_device *bond_dev,
115 struct net_device *slave_dev,
116 struct nlattr *tb[], struct nlattr *data[])
118 struct bonding *bond = netdev_priv(bond_dev);
119 struct bond_opt_value newval;
125 if (data[IFLA_BOND_SLAVE_QUEUE_ID]) {
126 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]);
127 char queue_id_str[IFNAMSIZ + 7];
129 /* queue_id option setting expects slave_name:queue_id */
130 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n",
131 slave_dev->name, queue_id);
132 bond_opt_initstr(&newval, queue_id_str);
133 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval);
141 static int bond_changelink(struct net_device *bond_dev,
142 struct nlattr *tb[], struct nlattr *data[])
144 struct bonding *bond = netdev_priv(bond_dev);
145 struct bond_opt_value newval;
152 if (data[IFLA_BOND_MODE]) {
153 int mode = nla_get_u8(data[IFLA_BOND_MODE]);
155 bond_opt_initval(&newval, mode);
156 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval);
160 if (data[IFLA_BOND_ACTIVE_SLAVE]) {
161 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
162 struct net_device *slave_dev;
163 char *active_slave = "";
166 slave_dev = __dev_get_by_index(dev_net(bond_dev),
170 active_slave = slave_dev->name;
172 bond_opt_initstr(&newval, active_slave);
173 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval);
177 if (data[IFLA_BOND_MIIMON]) {
178 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
180 bond_opt_initval(&newval, miimon);
181 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval);
185 if (data[IFLA_BOND_UPDELAY]) {
186 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
188 bond_opt_initval(&newval, updelay);
189 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval);
193 if (data[IFLA_BOND_DOWNDELAY]) {
194 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
196 bond_opt_initval(&newval, downdelay);
197 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
201 if (data[IFLA_BOND_USE_CARRIER]) {
202 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
204 bond_opt_initval(&newval, use_carrier);
205 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval);
209 if (data[IFLA_BOND_ARP_INTERVAL]) {
210 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
212 if (arp_interval && miimon) {
213 netdev_err(bond->dev, "ARP monitoring cannot be used with MII monitoring\n");
217 bond_opt_initval(&newval, arp_interval);
218 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
222 if (data[IFLA_BOND_ARP_IP_TARGET]) {
226 bond_option_arp_ip_targets_clear(bond);
227 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
228 __be32 target = nla_get_be32(attr);
230 bond_opt_initval(&newval, (__force u64)target);
231 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
237 if (i == 0 && bond->params.arp_interval)
238 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
242 if (data[IFLA_BOND_ARP_VALIDATE]) {
243 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
245 if (arp_validate && miimon) {
246 netdev_err(bond->dev, "ARP validating cannot be used with MII monitoring\n");
250 bond_opt_initval(&newval, arp_validate);
251 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval);
255 if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
256 int arp_all_targets =
257 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
259 bond_opt_initval(&newval, arp_all_targets);
260 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval);
264 if (data[IFLA_BOND_PRIMARY]) {
265 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
266 struct net_device *dev;
269 dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
273 bond_opt_initstr(&newval, primary);
274 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval);
278 if (data[IFLA_BOND_PRIMARY_RESELECT]) {
279 int primary_reselect =
280 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
282 bond_opt_initval(&newval, primary_reselect);
283 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval);
287 if (data[IFLA_BOND_FAIL_OVER_MAC]) {
289 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
291 bond_opt_initval(&newval, fail_over_mac);
292 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval);
296 if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
297 int xmit_hash_policy =
298 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
300 bond_opt_initval(&newval, xmit_hash_policy);
301 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval);
305 if (data[IFLA_BOND_RESEND_IGMP]) {
307 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
309 bond_opt_initval(&newval, resend_igmp);
310 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval);
314 if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
316 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
318 bond_opt_initval(&newval, num_peer_notif);
319 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval);
323 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
324 int all_slaves_active =
325 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
327 bond_opt_initval(&newval, all_slaves_active);
328 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval);
332 if (data[IFLA_BOND_MIN_LINKS]) {
334 nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
336 bond_opt_initval(&newval, min_links);
337 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval);
341 if (data[IFLA_BOND_LP_INTERVAL]) {
343 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
345 bond_opt_initval(&newval, lp_interval);
346 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval);
350 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
351 int packets_per_slave =
352 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
354 bond_opt_initval(&newval, packets_per_slave);
355 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
359 if (data[IFLA_BOND_AD_LACP_RATE]) {
361 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
363 bond_opt_initval(&newval, lacp_rate);
364 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval);
368 if (data[IFLA_BOND_AD_SELECT]) {
370 nla_get_u8(data[IFLA_BOND_AD_SELECT]);
372 bond_opt_initval(&newval, ad_select);
373 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval);
380 static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
381 struct nlattr *tb[], struct nlattr *data[])
385 err = bond_changelink(bond_dev, tb, data);
389 return register_netdevice(bond_dev);
392 static size_t bond_get_size(const struct net_device *bond_dev)
394 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */
395 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */
396 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */
397 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */
398 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */
399 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */
400 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */
401 /* IFLA_BOND_ARP_IP_TARGET */
402 nla_total_size(sizeof(struct nlattr)) +
403 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
404 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */
405 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */
406 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */
407 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */
408 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */
409 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */
410 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */
411 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */
412 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */
413 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */
414 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */
415 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */
416 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */
417 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */
418 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
419 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
420 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
421 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
422 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
423 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
427 static int bond_option_active_slave_get_ifindex(struct bonding *bond)
429 const struct net_device *slave;
433 slave = bond_option_active_slave_get_rcu(bond);
434 ifindex = slave ? slave->ifindex : 0;
439 static int bond_fill_info(struct sk_buff *skb,
440 const struct net_device *bond_dev)
442 struct bonding *bond = netdev_priv(bond_dev);
443 unsigned int packets_per_slave;
444 int ifindex, i, targets_added;
445 struct nlattr *targets;
446 struct slave *primary;
448 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
449 goto nla_put_failure;
451 ifindex = bond_option_active_slave_get_ifindex(bond);
452 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))
453 goto nla_put_failure;
455 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
456 goto nla_put_failure;
458 if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
459 bond->params.updelay * bond->params.miimon))
460 goto nla_put_failure;
462 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
463 bond->params.downdelay * bond->params.miimon))
464 goto nla_put_failure;
466 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
467 goto nla_put_failure;
469 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
470 goto nla_put_failure;
472 targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
474 goto nla_put_failure;
477 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
478 if (bond->params.arp_targets[i]) {
479 nla_put_be32(skb, i, bond->params.arp_targets[i]);
485 nla_nest_end(skb, targets);
487 nla_nest_cancel(skb, targets);
489 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
490 goto nla_put_failure;
492 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
493 bond->params.arp_all_targets))
494 goto nla_put_failure;
496 primary = rtnl_dereference(bond->primary_slave);
498 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex))
499 goto nla_put_failure;
501 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
502 bond->params.primary_reselect))
503 goto nla_put_failure;
505 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
506 bond->params.fail_over_mac))
507 goto nla_put_failure;
509 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
510 bond->params.xmit_policy))
511 goto nla_put_failure;
513 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
514 bond->params.resend_igmp))
515 goto nla_put_failure;
517 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
518 bond->params.num_peer_notif))
519 goto nla_put_failure;
521 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
522 bond->params.all_slaves_active))
523 goto nla_put_failure;
525 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
526 bond->params.min_links))
527 goto nla_put_failure;
529 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
530 bond->params.lp_interval))
531 goto nla_put_failure;
533 packets_per_slave = bond->params.packets_per_slave;
534 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
536 goto nla_put_failure;
538 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
539 bond->params.lacp_fast))
540 goto nla_put_failure;
542 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
543 bond->params.ad_select))
544 goto nla_put_failure;
546 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
549 if (!bond_3ad_get_active_agg_info(bond, &info)) {
552 nest = nla_nest_start(skb, IFLA_BOND_AD_INFO);
554 goto nla_put_failure;
556 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
558 goto nla_put_failure;
559 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
561 goto nla_put_failure;
562 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
564 goto nla_put_failure;
565 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
567 goto nla_put_failure;
568 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
569 sizeof(info.partner_system),
570 &info.partner_system))
571 goto nla_put_failure;
573 nla_nest_end(skb, nest);
583 struct rtnl_link_ops bond_link_ops __read_mostly = {
585 .priv_size = sizeof(struct bonding),
587 .maxtype = IFLA_BOND_MAX,
588 .policy = bond_policy,
589 .validate = bond_validate,
590 .newlink = bond_newlink,
591 .changelink = bond_changelink,
592 .get_size = bond_get_size,
593 .fill_info = bond_fill_info,
594 .get_num_tx_queues = bond_get_num_tx_queues,
595 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number
597 .slave_maxtype = IFLA_BOND_SLAVE_MAX,
598 .slave_policy = bond_slave_policy,
599 .slave_changelink = bond_slave_changelink,
600 .get_slave_size = bond_get_slave_size,
601 .fill_slave_info = bond_fill_slave_info,
604 int __init bond_netlink_init(void)
606 return rtnl_link_register(&bond_link_ops);
609 void bond_netlink_fini(void)
611 rtnl_link_unregister(&bond_link_ops);
614 MODULE_ALIAS_RTNL_LINK("bond");