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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * drivers/net/bond/bond_netlink.c - Netlink interface for bonding4 * 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(sizeof(u8)) + /* IFLA_BOND_SLAVE_STATE */23 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_MII_STATUS */24 nla_total_size(sizeof(u32)) + /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */25 nla_total_size(MAX_ADDR_LEN) + /* IFLA_BOND_SLAVE_PERM_HWADDR */26 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_QUEUE_ID */27 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */28 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE */29 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE */30 nla_total_size(sizeof(s32)) + /* IFLA_BOND_SLAVE_PRIO */31 0;32}33 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, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave)))41 goto nla_put_failure;42 43 if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link))44 goto nla_put_failure;45 46 if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT,47 slave->link_failure_count))48 goto nla_put_failure;49 50 if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR,51 slave_dev->addr_len, slave->perm_hwaddr))52 goto nla_put_failure;53 54 if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID,55 READ_ONCE(slave->queue_id)))56 goto nla_put_failure;57 58 if (nla_put_s32(skb, IFLA_BOND_SLAVE_PRIO, slave->prio))59 goto nla_put_failure;60 61 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {62 const struct aggregator *agg;63 const struct port *ad_port;64 65 ad_port = &SLAVE_AD_INFO(slave)->port;66 agg = SLAVE_AD_INFO(slave)->port.aggregator;67 if (agg) {68 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID,69 agg->aggregator_identifier))70 goto nla_put_failure;71 if (nla_put_u8(skb,72 IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE,73 ad_port->actor_oper_port_state))74 goto nla_put_failure;75 if (nla_put_u16(skb,76 IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE,77 ad_port->partner_oper.port_state))78 goto nla_put_failure;79 }80 }81 82 return 0;83 84nla_put_failure:85 return -EMSGSIZE;86}87 88/* Limit the max delay range to 300s */89static const struct netlink_range_validation delay_range = {90 .max = 300000,91};92 93static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {94 [IFLA_BOND_MODE] = { .type = NLA_U8 },95 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },96 [IFLA_BOND_MIIMON] = { .type = NLA_U32 },97 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 },98 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },99 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },100 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },101 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },102 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },103 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },104 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 },105 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },106 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },107 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },108 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },109 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },110 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },111 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },112 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },113 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },114 [IFLA_BOND_AD_LACP_ACTIVE] = { .type = NLA_U8 },115 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },116 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },117 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },118 [IFLA_BOND_AD_ACTOR_SYS_PRIO] = { .type = NLA_U16 },119 [IFLA_BOND_AD_USER_PORT_KEY] = { .type = NLA_U16 },120 [IFLA_BOND_AD_ACTOR_SYSTEM] = { .type = NLA_BINARY,121 .len = ETH_ALEN },122 [IFLA_BOND_TLB_DYNAMIC_LB] = { .type = NLA_U8 },123 [IFLA_BOND_PEER_NOTIF_DELAY] = NLA_POLICY_FULL_RANGE(NLA_U32, &delay_range),124 [IFLA_BOND_MISSED_MAX] = { .type = NLA_U8 },125 [IFLA_BOND_NS_IP6_TARGET] = { .type = NLA_NESTED },126 [IFLA_BOND_COUPLED_CONTROL] = { .type = NLA_U8 },127};128 129static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = {130 [IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 },131 [IFLA_BOND_SLAVE_PRIO] = { .type = NLA_S32 },132};133 134static int bond_validate(struct nlattr *tb[], struct nlattr *data[],135 struct netlink_ext_ack *extack)136{137 if (tb[IFLA_ADDRESS]) {138 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)139 return -EINVAL;140 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))141 return -EADDRNOTAVAIL;142 }143 return 0;144}145 146static int bond_slave_changelink(struct net_device *bond_dev,147 struct net_device *slave_dev,148 struct nlattr *tb[], struct nlattr *data[],149 struct netlink_ext_ack *extack)150{151 struct bonding *bond = netdev_priv(bond_dev);152 struct bond_opt_value newval;153 int err;154 155 if (!data)156 return 0;157 158 if (data[IFLA_BOND_SLAVE_QUEUE_ID]) {159 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]);160 char queue_id_str[IFNAMSIZ + 7];161 162 /* queue_id option setting expects slave_name:queue_id */163 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n",164 slave_dev->name, queue_id);165 bond_opt_initstr(&newval, queue_id_str);166 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval,167 data[IFLA_BOND_SLAVE_QUEUE_ID], extack);168 if (err)169 return err;170 }171 172 if (data[IFLA_BOND_SLAVE_PRIO]) {173 int prio = nla_get_s32(data[IFLA_BOND_SLAVE_PRIO]);174 175 bond_opt_slave_initval(&newval, &slave_dev, prio);176 err = __bond_opt_set(bond, BOND_OPT_PRIO, &newval,177 data[IFLA_BOND_SLAVE_PRIO], extack);178 if (err)179 return err;180 }181 182 return 0;183}184 185static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[],186 struct nlattr *data[],187 struct netlink_ext_ack *extack)188{189 struct bonding *bond = netdev_priv(bond_dev);190 struct bond_opt_value newval;191 int miimon = 0;192 int err;193 194 if (!data)195 return 0;196 197 if (data[IFLA_BOND_MODE]) {198 int mode = nla_get_u8(data[IFLA_BOND_MODE]);199 200 bond_opt_initval(&newval, mode);201 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval,202 data[IFLA_BOND_MODE], extack);203 if (err)204 return err;205 }206 if (data[IFLA_BOND_ACTIVE_SLAVE]) {207 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);208 struct net_device *slave_dev;209 char *active_slave = "";210 211 if (ifindex != 0) {212 slave_dev = __dev_get_by_index(dev_net(bond_dev),213 ifindex);214 if (!slave_dev)215 return -ENODEV;216 active_slave = slave_dev->name;217 }218 bond_opt_initstr(&newval, active_slave);219 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval,220 data[IFLA_BOND_ACTIVE_SLAVE], extack);221 if (err)222 return err;223 }224 if (data[IFLA_BOND_MIIMON]) {225 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);226 227 bond_opt_initval(&newval, miimon);228 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval,229 data[IFLA_BOND_MIIMON], extack);230 if (err)231 return err;232 }233 if (data[IFLA_BOND_UPDELAY]) {234 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);235 236 bond_opt_initval(&newval, updelay);237 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval,238 data[IFLA_BOND_UPDELAY], extack);239 if (err)240 return err;241 }242 if (data[IFLA_BOND_DOWNDELAY]) {243 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);244 245 bond_opt_initval(&newval, downdelay);246 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval,247 data[IFLA_BOND_DOWNDELAY], extack);248 if (err)249 return err;250 }251 if (data[IFLA_BOND_PEER_NOTIF_DELAY]) {252 int delay = nla_get_u32(data[IFLA_BOND_PEER_NOTIF_DELAY]);253 254 bond_opt_initval(&newval, delay);255 err = __bond_opt_set(bond, BOND_OPT_PEER_NOTIF_DELAY, &newval,256 data[IFLA_BOND_PEER_NOTIF_DELAY], extack);257 if (err)258 return err;259 }260 if (data[IFLA_BOND_USE_CARRIER]) {261 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);262 263 bond_opt_initval(&newval, use_carrier);264 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval,265 data[IFLA_BOND_USE_CARRIER], extack);266 if (err)267 return err;268 }269 if (data[IFLA_BOND_ARP_INTERVAL]) {270 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);271 272 if (arp_interval && miimon) {273 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL],274 "ARP monitoring cannot be used with MII monitoring");275 return -EINVAL;276 }277 278 bond_opt_initval(&newval, arp_interval);279 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval,280 data[IFLA_BOND_ARP_INTERVAL], extack);281 if (err)282 return err;283 }284 if (data[IFLA_BOND_ARP_IP_TARGET]) {285 struct nlattr *attr;286 int i = 0, rem;287 288 bond_option_arp_ip_targets_clear(bond);289 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {290 __be32 target;291 292 if (nla_len(attr) < sizeof(target))293 return -EINVAL;294 295 target = nla_get_be32(attr);296 297 bond_opt_initval(&newval, (__force u64)target);298 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,299 &newval,300 data[IFLA_BOND_ARP_IP_TARGET],301 extack);302 if (err)303 break;304 i++;305 }306 if (i == 0 && bond->params.arp_interval)307 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");308 if (err)309 return err;310 }311#if IS_ENABLED(CONFIG_IPV6)312 if (data[IFLA_BOND_NS_IP6_TARGET]) {313 struct nlattr *attr;314 int i = 0, rem;315 316 bond_option_ns_ip6_targets_clear(bond);317 nla_for_each_nested(attr, data[IFLA_BOND_NS_IP6_TARGET], rem) {318 struct in6_addr addr6;319 320 if (nla_len(attr) < sizeof(addr6)) {321 NL_SET_ERR_MSG(extack, "Invalid IPv6 address");322 return -EINVAL;323 }324 325 addr6 = nla_get_in6_addr(attr);326 327 bond_opt_initextra(&newval, &addr6, sizeof(addr6));328 err = __bond_opt_set(bond, BOND_OPT_NS_TARGETS,329 &newval,330 data[IFLA_BOND_NS_IP6_TARGET],331 extack);332 if (err)333 break;334 i++;335 }336 if (i == 0 && bond->params.arp_interval)337 netdev_warn(bond->dev, "Removing last ns target with arp_interval on\n");338 if (err)339 return err;340 }341#endif342 if (data[IFLA_BOND_ARP_VALIDATE]) {343 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);344 345 if (arp_validate && miimon) {346 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL],347 "ARP validating cannot be used with MII monitoring");348 return -EINVAL;349 }350 351 bond_opt_initval(&newval, arp_validate);352 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval,353 data[IFLA_BOND_ARP_VALIDATE], extack);354 if (err)355 return err;356 }357 if (data[IFLA_BOND_ARP_ALL_TARGETS]) {358 int arp_all_targets =359 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);360 361 bond_opt_initval(&newval, arp_all_targets);362 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval,363 data[IFLA_BOND_ARP_ALL_TARGETS], extack);364 if (err)365 return err;366 }367 if (data[IFLA_BOND_PRIMARY]) {368 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);369 struct net_device *dev;370 char *primary = "";371 372 dev = __dev_get_by_index(dev_net(bond_dev), ifindex);373 if (dev)374 primary = dev->name;375 376 bond_opt_initstr(&newval, primary);377 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval,378 data[IFLA_BOND_PRIMARY], extack);379 if (err)380 return err;381 }382 if (data[IFLA_BOND_PRIMARY_RESELECT]) {383 int primary_reselect =384 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);385 386 bond_opt_initval(&newval, primary_reselect);387 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval,388 data[IFLA_BOND_PRIMARY_RESELECT], extack);389 if (err)390 return err;391 }392 if (data[IFLA_BOND_FAIL_OVER_MAC]) {393 int fail_over_mac =394 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);395 396 bond_opt_initval(&newval, fail_over_mac);397 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval,398 data[IFLA_BOND_FAIL_OVER_MAC], extack);399 if (err)400 return err;401 }402 if (data[IFLA_BOND_XMIT_HASH_POLICY]) {403 int xmit_hash_policy =404 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);405 406 bond_opt_initval(&newval, xmit_hash_policy);407 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval,408 data[IFLA_BOND_XMIT_HASH_POLICY], extack);409 if (err)410 return err;411 }412 if (data[IFLA_BOND_RESEND_IGMP]) {413 int resend_igmp =414 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);415 416 bond_opt_initval(&newval, resend_igmp);417 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval,418 data[IFLA_BOND_RESEND_IGMP], extack);419 if (err)420 return err;421 }422 if (data[IFLA_BOND_NUM_PEER_NOTIF]) {423 int num_peer_notif =424 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);425 426 bond_opt_initval(&newval, num_peer_notif);427 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval,428 data[IFLA_BOND_NUM_PEER_NOTIF], extack);429 if (err)430 return err;431 }432 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {433 int all_slaves_active =434 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);435 436 bond_opt_initval(&newval, all_slaves_active);437 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval,438 data[IFLA_BOND_ALL_SLAVES_ACTIVE], extack);439 if (err)440 return err;441 }442 if (data[IFLA_BOND_MIN_LINKS]) {443 int min_links =444 nla_get_u32(data[IFLA_BOND_MIN_LINKS]);445 446 bond_opt_initval(&newval, min_links);447 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval,448 data[IFLA_BOND_MIN_LINKS], extack);449 if (err)450 return err;451 }452 if (data[IFLA_BOND_LP_INTERVAL]) {453 int lp_interval =454 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);455 456 bond_opt_initval(&newval, lp_interval);457 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval,458 data[IFLA_BOND_LP_INTERVAL], extack);459 if (err)460 return err;461 }462 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {463 int packets_per_slave =464 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);465 466 bond_opt_initval(&newval, packets_per_slave);467 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval,468 data[IFLA_BOND_PACKETS_PER_SLAVE], extack);469 if (err)470 return err;471 }472 473 if (data[IFLA_BOND_AD_LACP_ACTIVE]) {474 int lacp_active = nla_get_u8(data[IFLA_BOND_AD_LACP_ACTIVE]);475 476 bond_opt_initval(&newval, lacp_active);477 err = __bond_opt_set(bond, BOND_OPT_LACP_ACTIVE, &newval,478 data[IFLA_BOND_AD_LACP_ACTIVE], extack);479 if (err)480 return err;481 }482 483 if (data[IFLA_BOND_AD_LACP_RATE]) {484 int lacp_rate =485 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);486 487 bond_opt_initval(&newval, lacp_rate);488 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval,489 data[IFLA_BOND_AD_LACP_RATE], extack);490 if (err)491 return err;492 }493 if (data[IFLA_BOND_AD_SELECT]) {494 int ad_select =495 nla_get_u8(data[IFLA_BOND_AD_SELECT]);496 497 bond_opt_initval(&newval, ad_select);498 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval,499 data[IFLA_BOND_AD_SELECT], extack);500 if (err)501 return err;502 }503 if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) {504 int actor_sys_prio =505 nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]);506 507 bond_opt_initval(&newval, actor_sys_prio);508 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval,509 data[IFLA_BOND_AD_ACTOR_SYS_PRIO], extack);510 if (err)511 return err;512 }513 if (data[IFLA_BOND_AD_USER_PORT_KEY]) {514 int port_key =515 nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]);516 517 bond_opt_initval(&newval, port_key);518 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval,519 data[IFLA_BOND_AD_USER_PORT_KEY], extack);520 if (err)521 return err;522 }523 if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) {524 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN)525 return -EINVAL;526 527 bond_opt_initval(&newval,528 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM]));529 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval,530 data[IFLA_BOND_AD_ACTOR_SYSTEM], extack);531 if (err)532 return err;533 }534 if (data[IFLA_BOND_TLB_DYNAMIC_LB]) {535 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]);536 537 bond_opt_initval(&newval, dynamic_lb);538 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval,539 data[IFLA_BOND_TLB_DYNAMIC_LB], extack);540 if (err)541 return err;542 }543 544 if (data[IFLA_BOND_MISSED_MAX]) {545 int missed_max = nla_get_u8(data[IFLA_BOND_MISSED_MAX]);546 547 bond_opt_initval(&newval, missed_max);548 err = __bond_opt_set(bond, BOND_OPT_MISSED_MAX, &newval,549 data[IFLA_BOND_MISSED_MAX], extack);550 if (err)551 return err;552 }553 554 if (data[IFLA_BOND_COUPLED_CONTROL]) {555 int coupled_control = nla_get_u8(data[IFLA_BOND_COUPLED_CONTROL]);556 557 bond_opt_initval(&newval, coupled_control);558 err = __bond_opt_set(bond, BOND_OPT_COUPLED_CONTROL, &newval,559 data[IFLA_BOND_COUPLED_CONTROL], extack);560 if (err)561 return err;562 }563 564 return 0;565}566 567static int bond_newlink(struct net *src_net, struct net_device *bond_dev,568 struct nlattr *tb[], struct nlattr *data[],569 struct netlink_ext_ack *extack)570{571 int err;572 573 err = bond_changelink(bond_dev, tb, data, extack);574 if (err < 0)575 return err;576 577 err = register_netdevice(bond_dev);578 if (!err) {579 struct bonding *bond = netdev_priv(bond_dev);580 581 netif_carrier_off(bond_dev);582 bond_work_init_all(bond);583 }584 585 return err;586}587 588static size_t bond_get_size(const struct net_device *bond_dev)589{590 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */591 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */592 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */593 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */594 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */595 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */596 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */597 /* IFLA_BOND_ARP_IP_TARGET */598 nla_total_size(sizeof(struct nlattr)) +599 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +600 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */601 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */602 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */603 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */604 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */605 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */606 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */607 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */608 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */609 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */610 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */611 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */612 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_ACTIVE */613 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */614 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */615 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */616 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */617 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */618 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */619 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/620 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/621 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */622 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */623 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */624 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */625 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PEER_NOTIF_DELAY */626 nla_total_size(sizeof(u8)) + /* IFLA_BOND_MISSED_MAX */627 /* IFLA_BOND_NS_IP6_TARGET */628 nla_total_size(sizeof(struct nlattr)) +629 nla_total_size(sizeof(struct in6_addr)) * BOND_MAX_NS_TARGETS +630 nla_total_size(sizeof(u8)) + /* IFLA_BOND_COUPLED_CONTROL */631 0;632}633 634static int bond_option_active_slave_get_ifindex(struct bonding *bond)635{636 const struct net_device *slave;637 int ifindex;638 639 rcu_read_lock();640 slave = bond_option_active_slave_get_rcu(bond);641 ifindex = slave ? slave->ifindex : 0;642 rcu_read_unlock();643 return ifindex;644}645 646static int bond_fill_info(struct sk_buff *skb,647 const struct net_device *bond_dev)648{649 struct bonding *bond = netdev_priv(bond_dev);650 unsigned int packets_per_slave;651 int ifindex, i, targets_added;652 struct nlattr *targets;653 struct slave *primary;654 655 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))656 goto nla_put_failure;657 658 ifindex = bond_option_active_slave_get_ifindex(bond);659 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))660 goto nla_put_failure;661 662 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))663 goto nla_put_failure;664 665 if (nla_put_u32(skb, IFLA_BOND_UPDELAY,666 bond->params.updelay * bond->params.miimon))667 goto nla_put_failure;668 669 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,670 bond->params.downdelay * bond->params.miimon))671 goto nla_put_failure;672 673 if (nla_put_u32(skb, IFLA_BOND_PEER_NOTIF_DELAY,674 bond->params.peer_notif_delay * bond->params.miimon))675 goto nla_put_failure;676 677 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))678 goto nla_put_failure;679 680 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))681 goto nla_put_failure;682 683 targets = nla_nest_start_noflag(skb, IFLA_BOND_ARP_IP_TARGET);684 if (!targets)685 goto nla_put_failure;686 687 targets_added = 0;688 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {689 if (bond->params.arp_targets[i]) {690 if (nla_put_be32(skb, i, bond->params.arp_targets[i]))691 goto nla_put_failure;692 targets_added = 1;693 }694 }695 696 if (targets_added)697 nla_nest_end(skb, targets);698 else699 nla_nest_cancel(skb, targets);700 701 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))702 goto nla_put_failure;703 704 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,705 bond->params.arp_all_targets))706 goto nla_put_failure;707 708#if IS_ENABLED(CONFIG_IPV6)709 targets = nla_nest_start(skb, IFLA_BOND_NS_IP6_TARGET);710 if (!targets)711 goto nla_put_failure;712 713 targets_added = 0;714 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) {715 if (!ipv6_addr_any(&bond->params.ns_targets[i])) {716 if (nla_put_in6_addr(skb, i, &bond->params.ns_targets[i]))717 goto nla_put_failure;718 targets_added = 1;719 }720 }721 722 if (targets_added)723 nla_nest_end(skb, targets);724 else725 nla_nest_cancel(skb, targets);726#endif727 728 primary = rtnl_dereference(bond->primary_slave);729 if (primary &&730 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex))731 goto nla_put_failure;732 733 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,734 bond->params.primary_reselect))735 goto nla_put_failure;736 737 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,738 bond->params.fail_over_mac))739 goto nla_put_failure;740 741 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,742 bond->params.xmit_policy))743 goto nla_put_failure;744 745 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,746 bond->params.resend_igmp))747 goto nla_put_failure;748 749 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,750 bond->params.num_peer_notif))751 goto nla_put_failure;752 753 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,754 bond->params.all_slaves_active))755 goto nla_put_failure;756 757 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,758 bond->params.min_links))759 goto nla_put_failure;760 761 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,762 bond->params.lp_interval))763 goto nla_put_failure;764 765 packets_per_slave = bond->params.packets_per_slave;766 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,767 packets_per_slave))768 goto nla_put_failure;769 770 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_ACTIVE,771 bond->params.lacp_active))772 goto nla_put_failure;773 774 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,775 bond->params.lacp_fast))776 goto nla_put_failure;777 778 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,779 bond->params.ad_select))780 goto nla_put_failure;781 782 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB,783 bond->params.tlb_dynamic_lb))784 goto nla_put_failure;785 786 if (nla_put_u8(skb, IFLA_BOND_MISSED_MAX,787 bond->params.missed_max))788 goto nla_put_failure;789 790 if (nla_put_u8(skb, IFLA_BOND_COUPLED_CONTROL,791 bond->params.coupled_control))792 goto nla_put_failure;793 794 if (BOND_MODE(bond) == BOND_MODE_8023AD) {795 struct ad_info info;796 797 if (capable(CAP_NET_ADMIN)) {798 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO,799 bond->params.ad_actor_sys_prio))800 goto nla_put_failure;801 802 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY,803 bond->params.ad_user_port_key))804 goto nla_put_failure;805 806 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM,807 ETH_ALEN, &bond->params.ad_actor_system))808 goto nla_put_failure;809 }810 if (!bond_3ad_get_active_agg_info(bond, &info)) {811 struct nlattr *nest;812 813 nest = nla_nest_start_noflag(skb, IFLA_BOND_AD_INFO);814 if (!nest)815 goto nla_put_failure;816 817 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,818 info.aggregator_id))819 goto nla_put_failure;820 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,821 info.ports))822 goto nla_put_failure;823 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,824 info.actor_key))825 goto nla_put_failure;826 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,827 info.partner_key))828 goto nla_put_failure;829 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,830 sizeof(info.partner_system),831 &info.partner_system))832 goto nla_put_failure;833 834 nla_nest_end(skb, nest);835 }836 }837 838 return 0;839 840nla_put_failure:841 return -EMSGSIZE;842}843 844static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr)845{846 switch (attr) {847 case IFLA_STATS_LINK_XSTATS:848 case IFLA_STATS_LINK_XSTATS_SLAVE:849 break;850 default:851 return 0;852 }853 854 return bond_3ad_stats_size() + nla_total_size(0);855}856 857static int bond_fill_linkxstats(struct sk_buff *skb,858 const struct net_device *dev,859 int *prividx, int attr)860{861 struct nlattr *nla __maybe_unused;862 struct slave *slave = NULL;863 struct nlattr *nest, *nest2;864 struct bonding *bond;865 866 switch (attr) {867 case IFLA_STATS_LINK_XSTATS:868 bond = netdev_priv(dev);869 break;870 case IFLA_STATS_LINK_XSTATS_SLAVE:871 slave = bond_slave_get_rtnl(dev);872 if (!slave)873 return 0;874 bond = slave->bond;875 break;876 default:877 return -EINVAL;878 }879 880 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BOND);881 if (!nest)882 return -EMSGSIZE;883 if (BOND_MODE(bond) == BOND_MODE_8023AD) {884 struct bond_3ad_stats *stats;885 886 if (slave)887 stats = &SLAVE_AD_INFO(slave)->stats;888 else889 stats = &BOND_AD_INFO(bond).stats;890 891 nest2 = nla_nest_start_noflag(skb, BOND_XSTATS_3AD);892 if (!nest2) {893 nla_nest_end(skb, nest);894 return -EMSGSIZE;895 }896 897 if (bond_3ad_stats_fill(skb, stats)) {898 nla_nest_cancel(skb, nest2);899 nla_nest_end(skb, nest);900 return -EMSGSIZE;901 }902 nla_nest_end(skb, nest2);903 }904 nla_nest_end(skb, nest);905 906 return 0;907}908 909struct rtnl_link_ops bond_link_ops __read_mostly = {910 .kind = "bond",911 .priv_size = sizeof(struct bonding),912 .setup = bond_setup,913 .maxtype = IFLA_BOND_MAX,914 .policy = bond_policy,915 .validate = bond_validate,916 .newlink = bond_newlink,917 .changelink = bond_changelink,918 .get_size = bond_get_size,919 .fill_info = bond_fill_info,920 .get_num_tx_queues = bond_get_num_tx_queues,921 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number922 as for TX queues */923 .fill_linkxstats = bond_fill_linkxstats,924 .get_linkxstats_size = bond_get_linkxstats_size,925 .slave_maxtype = IFLA_BOND_SLAVE_MAX,926 .slave_policy = bond_slave_policy,927 .slave_changelink = bond_slave_changelink,928 .get_slave_size = bond_get_slave_size,929 .fill_slave_info = bond_fill_slave_info,930};931 932int __init bond_netlink_init(void)933{934 return rtnl_link_register(&bond_link_ops);935}936 937void bond_netlink_fini(void)938{939 rtnl_link_unregister(&bond_link_ops);940}941 942MODULE_ALIAS_RTNL_LINK("bond");943