1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * drivers/net/bond/bond_netlink.c - Netlink interface for bonding 4 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us> 5 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com> 6 */ 7 8#include <linux/module.h> 9#include <linux/errno.h> 10#include <linux/netdevice.h> 11#include <linux/etherdevice.h> 12#include <linux/if_link.h> 13#include <linux/if_ether.h> 14#include <net/netlink.h> 15#include <net/rtnetlink.h> 16#include <net/bonding.h> 17#include <net/ipv6.h> 18 19static size_t bond_get_slave_size(const struct net_device *bond_dev, 20 const struct net_device *slave_dev) 21{ 22 return nla_total_size(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, slave->queue_id)) 55 goto nla_put_failure; 56 57 if (nla_put_s32(skb, IFLA_BOND_SLAVE_PRIO, slave->prio)) 58 goto nla_put_failure; 59 60 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) { 61 const struct aggregator *agg; 62 const struct port *ad_port; 63 64 ad_port = &SLAVE_AD_INFO(slave)->port; 65 agg = SLAVE_AD_INFO(slave)->port.aggregator; 66 if (agg) { 67 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID, 68 agg->aggregator_identifier)) 69 goto nla_put_failure; 70 if (nla_put_u8(skb, 71 IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE, 72 ad_port->actor_oper_port_state)) 73 goto nla_put_failure; 74 if (nla_put_u16(skb, 75 IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE, 76 ad_port->partner_oper.port_state)) 77 goto nla_put_failure; 78 } 79 } 80 81 return 0; 82 83nla_put_failure: 84 return -EMSGSIZE; 85} 86 87/* Limit the max delay range to 300s */ 88static const struct netlink_range_validation delay_range = { 89 .max = 300000, 90}; 91 92static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { 93 [IFLA_BOND_MODE] = { .type = NLA_U8 }, 94 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 }, 95 [IFLA_BOND_MIIMON] = { .type = NLA_U32 }, 96 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 }, 97 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 }, 98 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 }, 99 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 }, 100 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED }, 101 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 }, 102 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 }, 103 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 }, 104 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 }, 105 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 }, 106 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 }, 107 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 }, 108 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 }, 109 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 }, 110 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 }, 111 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 }, 112 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 }, 113 [IFLA_BOND_AD_LACP_ACTIVE] = { .type = NLA_U8 }, 114 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 }, 115 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 }, 116 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED }, 117 [IFLA_BOND_AD_ACTOR_SYS_PRIO] = { .type = NLA_U16 }, 118 [IFLA_BOND_AD_USER_PORT_KEY] = { .type = NLA_U16 }, 119 [IFLA_BOND_AD_ACTOR_SYSTEM] = { .type = NLA_BINARY, 120 .len = ETH_ALEN }, 121 [IFLA_BOND_TLB_DYNAMIC_LB] = { .type = NLA_U8 }, 122 [IFLA_BOND_PEER_NOTIF_DELAY] = NLA_POLICY_FULL_RANGE(NLA_U32, &delay_range), 123 [IFLA_BOND_MISSED_MAX] = { .type = NLA_U8 }, 124 [IFLA_BOND_NS_IP6_TARGET] = { .type = NLA_NESTED }, 125 [IFLA_BOND_COUPLED_CONTROL] = { .type = NLA_U8 }, 126}; 127 128static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = { 129 [IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 }, 130 [IFLA_BOND_SLAVE_PRIO] = { .type = NLA_S32 }, 131}; 132 133static int bond_validate(struct nlattr *tb[], struct nlattr *data[], 134 struct netlink_ext_ack *extack) 135{ 136 if (tb[IFLA_ADDRESS]) { 137 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 138 return -EINVAL; 139 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 140 return -EADDRNOTAVAIL; 141 } 142 return 0; 143} 144 145static int bond_slave_changelink(struct net_device *bond_dev, 146 struct net_device *slave_dev, 147 struct nlattr *tb[], struct nlattr *data[], 148 struct netlink_ext_ack *extack) 149{ 150 struct bonding *bond = netdev_priv(bond_dev); 151 struct bond_opt_value newval; 152 int err; 153 154 if (!data) 155 return 0; 156 157 if (data[IFLA_BOND_SLAVE_QUEUE_ID]) { 158 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]); 159 char queue_id_str[IFNAMSIZ + 7]; 160 161 /* queue_id option setting expects slave_name:queue_id */ 162 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n", 163 slave_dev->name, queue_id); 164 bond_opt_initstr(&newval, queue_id_str); 165 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval, 166 data[IFLA_BOND_SLAVE_QUEUE_ID], extack); 167 if (err) 168 return err; 169 } 170 171 if (data[IFLA_BOND_SLAVE_PRIO]) { 172 int prio = nla_get_s32(data[IFLA_BOND_SLAVE_PRIO]); 173 174 bond_opt_slave_initval(&newval, &slave_dev, prio); 175 err = __bond_opt_set(bond, BOND_OPT_PRIO, &newval, 176 data[IFLA_BOND_SLAVE_PRIO], extack); 177 if (err) 178 return err; 179 } 180 181 return 0; 182} 183 184static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[], 185 struct nlattr *data[], 186 struct netlink_ext_ack *extack) 187{ 188 struct bonding *bond = netdev_priv(bond_dev); 189 struct bond_opt_value newval; 190 int miimon = 0; 191 int err; 192 193 if (!data) 194 return 0; 195 196 if (data[IFLA_BOND_MODE]) { 197 int mode = nla_get_u8(data[IFLA_BOND_MODE]); 198 199 bond_opt_initval(&newval, mode); 200 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval, 201 data[IFLA_BOND_MODE], extack); 202 if (err) 203 return err; 204 } 205 if (data[IFLA_BOND_ACTIVE_SLAVE]) { 206 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]); 207 struct net_device *slave_dev; 208 char *active_slave = ""; 209 210 if (ifindex != 0) { 211 slave_dev = __dev_get_by_index(dev_net(bond_dev), 212 ifindex); 213 if (!slave_dev) 214 return -ENODEV; 215 active_slave = slave_dev->name; 216 } 217 bond_opt_initstr(&newval, active_slave); 218 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval, 219 data[IFLA_BOND_ACTIVE_SLAVE], extack); 220 if (err) 221 return err; 222 } 223 if (data[IFLA_BOND_MIIMON]) { 224 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]); 225 226 bond_opt_initval(&newval, miimon); 227 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval, 228 data[IFLA_BOND_MIIMON], extack); 229 if (err) 230 return err; 231 } 232 if (data[IFLA_BOND_UPDELAY]) { 233 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]); 234 235 bond_opt_initval(&newval, updelay); 236 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval, 237 data[IFLA_BOND_UPDELAY], extack); 238 if (err) 239 return err; 240 } 241 if (data[IFLA_BOND_DOWNDELAY]) { 242 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]); 243 244 bond_opt_initval(&newval, downdelay); 245 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval, 246 data[IFLA_BOND_DOWNDELAY], extack); 247 if (err) 248 return err; 249 } 250 if (data[IFLA_BOND_PEER_NOTIF_DELAY]) { 251 int delay = nla_get_u32(data[IFLA_BOND_PEER_NOTIF_DELAY]); 252 253 bond_opt_initval(&newval, delay); 254 err = __bond_opt_set(bond, BOND_OPT_PEER_NOTIF_DELAY, &newval, 255 data[IFLA_BOND_PEER_NOTIF_DELAY], extack); 256 if (err) 257 return err; 258 } 259 if (data[IFLA_BOND_USE_CARRIER]) { 260 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]); 261 262 bond_opt_initval(&newval, use_carrier); 263 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval, 264 data[IFLA_BOND_USE_CARRIER], extack); 265 if (err) 266 return err; 267 } 268 if (data[IFLA_BOND_ARP_INTERVAL]) { 269 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]); 270 271 if (arp_interval && miimon) { 272 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL], 273 "ARP monitoring cannot be used with MII monitoring"); 274 return -EINVAL; 275 } 276 277 bond_opt_initval(&newval, arp_interval); 278 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval, 279 data[IFLA_BOND_ARP_INTERVAL], extack); 280 if (err) 281 return err; 282 } 283 if (data[IFLA_BOND_ARP_IP_TARGET]) { 284 struct nlattr *attr; 285 int i = 0, rem; 286 287 bond_option_arp_ip_targets_clear(bond); 288 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) { 289 __be32 target; 290 291 if (nla_len(attr) < sizeof(target)) 292 return -EINVAL; 293 294 target = nla_get_be32(attr); 295 296 bond_opt_initval(&newval, (__force u64)target); 297 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS, 298 &newval, 299 data[IFLA_BOND_ARP_IP_TARGET], 300 extack); 301 if (err) 302 break; 303 i++; 304 } 305 if (i == 0 && bond->params.arp_interval) 306 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 307 if (err) 308 return err; 309 } 310#if IS_ENABLED(CONFIG_IPV6) 311 if (data[IFLA_BOND_NS_IP6_TARGET]) { 312 struct nlattr *attr; 313 int i = 0, rem; 314 315 bond_option_ns_ip6_targets_clear(bond); 316 nla_for_each_nested(attr, data[IFLA_BOND_NS_IP6_TARGET], rem) { 317 struct in6_addr addr6; 318 319 if (nla_len(attr) < sizeof(addr6)) { 320 NL_SET_ERR_MSG(extack, "Invalid IPv6 address"); 321 return -EINVAL; 322 } 323 324 addr6 = nla_get_in6_addr(attr); 325 326 bond_opt_initextra(&newval, &addr6, sizeof(addr6)); 327 err = __bond_opt_set(bond, BOND_OPT_NS_TARGETS, 328 &newval, 329 data[IFLA_BOND_NS_IP6_TARGET], 330 extack); 331 if (err) 332 break; 333 i++; 334 } 335 if (i == 0 && bond->params.arp_interval) 336 netdev_warn(bond->dev, "Removing last ns target with arp_interval on\n"); 337 if (err) 338 return err; 339 } 340#endif 341 if (data[IFLA_BOND_ARP_VALIDATE]) { 342 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]); 343 344 if (arp_validate && miimon) { 345 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL], 346 "ARP validating cannot be used with MII monitoring"); 347 return -EINVAL; 348 } 349 350 bond_opt_initval(&newval, arp_validate); 351 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval, 352 data[IFLA_BOND_ARP_VALIDATE], extack); 353 if (err) 354 return err; 355 } 356 if (data[IFLA_BOND_ARP_ALL_TARGETS]) { 357 int arp_all_targets = 358 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]); 359 360 bond_opt_initval(&newval, arp_all_targets); 361 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval, 362 data[IFLA_BOND_ARP_ALL_TARGETS], extack); 363 if (err) 364 return err; 365 } 366 if (data[IFLA_BOND_PRIMARY]) { 367 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]); 368 struct net_device *dev; 369 char *primary = ""; 370 371 dev = __dev_get_by_index(dev_net(bond_dev), ifindex); 372 if (dev) 373 primary = dev->name; 374 375 bond_opt_initstr(&newval, primary); 376 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval, 377 data[IFLA_BOND_PRIMARY], extack); 378 if (err) 379 return err; 380 } 381 if (data[IFLA_BOND_PRIMARY_RESELECT]) { 382 int primary_reselect = 383 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]); 384 385 bond_opt_initval(&newval, primary_reselect); 386 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval, 387 data[IFLA_BOND_PRIMARY_RESELECT], extack); 388 if (err) 389 return err; 390 } 391 if (data[IFLA_BOND_FAIL_OVER_MAC]) { 392 int fail_over_mac = 393 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]); 394 395 bond_opt_initval(&newval, fail_over_mac); 396 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval, 397 data[IFLA_BOND_FAIL_OVER_MAC], extack); 398 if (err) 399 return err; 400 } 401 if (data[IFLA_BOND_XMIT_HASH_POLICY]) { 402 int xmit_hash_policy = 403 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]); 404 405 bond_opt_initval(&newval, xmit_hash_policy); 406 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval, 407 data[IFLA_BOND_XMIT_HASH_POLICY], extack); 408 if (err) 409 return err; 410 } 411 if (data[IFLA_BOND_RESEND_IGMP]) { 412 int resend_igmp = 413 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]); 414 415 bond_opt_initval(&newval, resend_igmp); 416 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval, 417 data[IFLA_BOND_RESEND_IGMP], extack); 418 if (err) 419 return err; 420 } 421 if (data[IFLA_BOND_NUM_PEER_NOTIF]) { 422 int num_peer_notif = 423 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]); 424 425 bond_opt_initval(&newval, num_peer_notif); 426 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval, 427 data[IFLA_BOND_NUM_PEER_NOTIF], extack); 428 if (err) 429 return err; 430 } 431 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) { 432 int all_slaves_active = 433 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]); 434 435 bond_opt_initval(&newval, all_slaves_active); 436 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval, 437 data[IFLA_BOND_ALL_SLAVES_ACTIVE], extack); 438 if (err) 439 return err; 440 } 441 if (data[IFLA_BOND_MIN_LINKS]) { 442 int min_links = 443 nla_get_u32(data[IFLA_BOND_MIN_LINKS]); 444 445 bond_opt_initval(&newval, min_links); 446 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval, 447 data[IFLA_BOND_MIN_LINKS], extack); 448 if (err) 449 return err; 450 } 451 if (data[IFLA_BOND_LP_INTERVAL]) { 452 int lp_interval = 453 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]); 454 455 bond_opt_initval(&newval, lp_interval); 456 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval, 457 data[IFLA_BOND_LP_INTERVAL], extack); 458 if (err) 459 return err; 460 } 461 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) { 462 int packets_per_slave = 463 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]); 464 465 bond_opt_initval(&newval, packets_per_slave); 466 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval, 467 data[IFLA_BOND_PACKETS_PER_SLAVE], extack); 468 if (err) 469 return err; 470 } 471 472 if (data[IFLA_BOND_AD_LACP_ACTIVE]) { 473 int lacp_active = nla_get_u8(data[IFLA_BOND_AD_LACP_ACTIVE]); 474 475 bond_opt_initval(&newval, lacp_active); 476 err = __bond_opt_set(bond, BOND_OPT_LACP_ACTIVE, &newval, 477 data[IFLA_BOND_AD_LACP_ACTIVE], extack); 478 if (err) 479 return err; 480 } 481 482 if (data[IFLA_BOND_AD_LACP_RATE]) { 483 int lacp_rate = 484 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]); 485 486 bond_opt_initval(&newval, lacp_rate); 487 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval, 488 data[IFLA_BOND_AD_LACP_RATE], extack); 489 if (err) 490 return err; 491 } 492 if (data[IFLA_BOND_AD_SELECT]) { 493 int ad_select = 494 nla_get_u8(data[IFLA_BOND_AD_SELECT]); 495 496 bond_opt_initval(&newval, ad_select); 497 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval, 498 data[IFLA_BOND_AD_SELECT], extack); 499 if (err) 500 return err; 501 } 502 if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) { 503 int actor_sys_prio = 504 nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]); 505 506 bond_opt_initval(&newval, actor_sys_prio); 507 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval, 508 data[IFLA_BOND_AD_ACTOR_SYS_PRIO], extack); 509 if (err) 510 return err; 511 } 512 if (data[IFLA_BOND_AD_USER_PORT_KEY]) { 513 int port_key = 514 nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]); 515 516 bond_opt_initval(&newval, port_key); 517 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval, 518 data[IFLA_BOND_AD_USER_PORT_KEY], extack); 519 if (err) 520 return err; 521 } 522 if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) { 523 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN) 524 return -EINVAL; 525 526 bond_opt_initval(&newval, 527 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM])); 528 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval, 529 data[IFLA_BOND_AD_ACTOR_SYSTEM], extack); 530 if (err) 531 return err; 532 } 533 if (data[IFLA_BOND_TLB_DYNAMIC_LB]) { 534 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]); 535 536 bond_opt_initval(&newval, dynamic_lb); 537 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval, 538 data[IFLA_BOND_TLB_DYNAMIC_LB], extack); 539 if (err) 540 return err; 541 } 542 543 if (data[IFLA_BOND_MISSED_MAX]) { 544 int missed_max = nla_get_u8(data[IFLA_BOND_MISSED_MAX]); 545 546 bond_opt_initval(&newval, missed_max); 547 err = __bond_opt_set(bond, BOND_OPT_MISSED_MAX, &newval, 548 data[IFLA_BOND_MISSED_MAX], extack); 549 if (err) 550 return err; 551 } 552 553 if (data[IFLA_BOND_COUPLED_CONTROL]) { 554 int coupled_control = nla_get_u8(data[IFLA_BOND_COUPLED_CONTROL]); 555 556 bond_opt_initval(&newval, coupled_control); 557 err = __bond_opt_set(bond, BOND_OPT_COUPLED_CONTROL, &newval, 558 data[IFLA_BOND_COUPLED_CONTROL], extack); 559 if (err) 560 return err; 561 } 562 563 return 0; 564} 565 566static int bond_newlink(struct net *src_net, struct net_device *bond_dev, 567 struct nlattr *tb[], struct nlattr *data[], 568 struct netlink_ext_ack *extack) 569{ 570 int err; 571 572 err = bond_changelink(bond_dev, tb, data, extack); 573 if (err < 0) 574 return err; 575 576 err = register_netdevice(bond_dev); 577 if (!err) { 578 struct bonding *bond = netdev_priv(bond_dev); 579 580 netif_carrier_off(bond_dev); 581 bond_work_init_all(bond); 582 } 583 584 return err; 585} 586 587static size_t bond_get_size(const struct net_device *bond_dev) 588{ 589 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */ 590 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */ 591 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */ 592 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */ 593 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */ 594 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */ 595 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */ 596 /* IFLA_BOND_ARP_IP_TARGET */ 597 nla_total_size(sizeof(struct nlattr)) + 598 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS + 599 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */ 600 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */ 601 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */ 602 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */ 603 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */ 604 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */ 605 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */ 606 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */ 607 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */ 608 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */ 609 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */ 610 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */ 611 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_ACTIVE */ 612 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */ 613 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */ 614 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */ 615 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */ 616 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */ 617 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */ 618 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/ 619 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/ 620 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */ 621 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */ 622 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */ 623 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */ 624 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PEER_NOTIF_DELAY */ 625 nla_total_size(sizeof(u8)) + /* IFLA_BOND_MISSED_MAX */ 626 /* IFLA_BOND_NS_IP6_TARGET */ 627 nla_total_size(sizeof(struct nlattr)) + 628 nla_total_size(sizeof(struct in6_addr)) * BOND_MAX_NS_TARGETS + 629 nla_total_size(sizeof(u8)) + /* IFLA_BOND_COUPLED_CONTROL */ 630 0; 631} 632 633static int bond_option_active_slave_get_ifindex(struct bonding *bond) 634{ 635 const struct net_device *slave; 636 int ifindex; 637 638 rcu_read_lock(); 639 slave = bond_option_active_slave_get_rcu(bond); 640 ifindex = slave ? slave->ifindex : 0; 641 rcu_read_unlock(); 642 return ifindex; 643} 644 645static int bond_fill_info(struct sk_buff *skb, 646 const struct net_device *bond_dev) 647{ 648 struct bonding *bond = netdev_priv(bond_dev); 649 unsigned int packets_per_slave; 650 int ifindex, i, targets_added; 651 struct nlattr *targets; 652 struct slave *primary; 653 654 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond))) 655 goto nla_put_failure; 656 657 ifindex = bond_option_active_slave_get_ifindex(bond); 658 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex)) 659 goto nla_put_failure; 660 661 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon)) 662 goto nla_put_failure; 663 664 if (nla_put_u32(skb, IFLA_BOND_UPDELAY, 665 bond->params.updelay * bond->params.miimon)) 666 goto nla_put_failure; 667 668 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY, 669 bond->params.downdelay * bond->params.miimon)) 670 goto nla_put_failure; 671 672 if (nla_put_u32(skb, IFLA_BOND_PEER_NOTIF_DELAY, 673 bond->params.peer_notif_delay * bond->params.miimon)) 674 goto nla_put_failure; 675 676 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier)) 677 goto nla_put_failure; 678 679 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval)) 680 goto nla_put_failure; 681 682 targets = nla_nest_start_noflag(skb, IFLA_BOND_ARP_IP_TARGET); 683 if (!targets) 684 goto nla_put_failure; 685 686 targets_added = 0; 687 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { 688 if (bond->params.arp_targets[i]) { 689 if (nla_put_be32(skb, i, bond->params.arp_targets[i])) 690 goto nla_put_failure; 691 targets_added = 1; 692 } 693 } 694 695 if (targets_added) 696 nla_nest_end(skb, targets); 697 else 698 nla_nest_cancel(skb, targets); 699 700 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate)) 701 goto nla_put_failure; 702 703 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS, 704 bond->params.arp_all_targets)) 705 goto nla_put_failure; 706 707#if IS_ENABLED(CONFIG_IPV6) 708 targets = nla_nest_start(skb, IFLA_BOND_NS_IP6_TARGET); 709 if (!targets) 710 goto nla_put_failure; 711 712 targets_added = 0; 713 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { 714 if (!ipv6_addr_any(&bond->params.ns_targets[i])) { 715 if (nla_put_in6_addr(skb, i, &bond->params.ns_targets[i])) 716 goto nla_put_failure; 717 targets_added = 1; 718 } 719 } 720 721 if (targets_added) 722 nla_nest_end(skb, targets); 723 else 724 nla_nest_cancel(skb, targets); 725#endif 726 727 primary = rtnl_dereference(bond->primary_slave); 728 if (primary && 729 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex)) 730 goto nla_put_failure; 731 732 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT, 733 bond->params.primary_reselect)) 734 goto nla_put_failure; 735 736 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC, 737 bond->params.fail_over_mac)) 738 goto nla_put_failure; 739 740 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY, 741 bond->params.xmit_policy)) 742 goto nla_put_failure; 743 744 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP, 745 bond->params.resend_igmp)) 746 goto nla_put_failure; 747 748 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF, 749 bond->params.num_peer_notif)) 750 goto nla_put_failure; 751 752 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE, 753 bond->params.all_slaves_active)) 754 goto nla_put_failure; 755 756 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS, 757 bond->params.min_links)) 758 goto nla_put_failure; 759 760 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL, 761 bond->params.lp_interval)) 762 goto nla_put_failure; 763 764 packets_per_slave = bond->params.packets_per_slave; 765 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE, 766 packets_per_slave)) 767 goto nla_put_failure; 768 769 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_ACTIVE, 770 bond->params.lacp_active)) 771 goto nla_put_failure; 772 773 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE, 774 bond->params.lacp_fast)) 775 goto nla_put_failure; 776 777 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT, 778 bond->params.ad_select)) 779 goto nla_put_failure; 780 781 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB, 782 bond->params.tlb_dynamic_lb)) 783 goto nla_put_failure; 784 785 if (nla_put_u8(skb, IFLA_BOND_MISSED_MAX, 786 bond->params.missed_max)) 787 goto nla_put_failure; 788 789 if (nla_put_u8(skb, IFLA_BOND_COUPLED_CONTROL, 790 bond->params.coupled_control)) 791 goto nla_put_failure; 792 793 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 794 struct ad_info info; 795 796 if (capable(CAP_NET_ADMIN)) { 797 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO, 798 bond->params.ad_actor_sys_prio)) 799 goto nla_put_failure; 800 801 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY, 802 bond->params.ad_user_port_key)) 803 goto nla_put_failure; 804 805 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM, 806 ETH_ALEN, &bond->params.ad_actor_system)) 807 goto nla_put_failure; 808 } 809 if (!bond_3ad_get_active_agg_info(bond, &info)) { 810 struct nlattr *nest; 811 812 nest = nla_nest_start_noflag(skb, IFLA_BOND_AD_INFO); 813 if (!nest) 814 goto nla_put_failure; 815 816 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR, 817 info.aggregator_id)) 818 goto nla_put_failure; 819 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS, 820 info.ports)) 821 goto nla_put_failure; 822 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY, 823 info.actor_key)) 824 goto nla_put_failure; 825 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY, 826 info.partner_key)) 827 goto nla_put_failure; 828 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC, 829 sizeof(info.partner_system), 830 &info.partner_system)) 831 goto nla_put_failure; 832 833 nla_nest_end(skb, nest); 834 } 835 } 836 837 return 0; 838 839nla_put_failure: 840 return -EMSGSIZE; 841} 842 843static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr) 844{ 845 switch (attr) { 846 case IFLA_STATS_LINK_XSTATS: 847 case IFLA_STATS_LINK_XSTATS_SLAVE: 848 break; 849 default: 850 return 0; 851 } 852 853 return bond_3ad_stats_size() + nla_total_size(0); 854} 855 856static int bond_fill_linkxstats(struct sk_buff *skb, 857 const struct net_device *dev, 858 int *prividx, int attr) 859{ 860 struct nlattr *nla __maybe_unused; 861 struct slave *slave = NULL; 862 struct nlattr *nest, *nest2; 863 struct bonding *bond; 864 865 switch (attr) { 866 case IFLA_STATS_LINK_XSTATS: 867 bond = netdev_priv(dev); 868 break; 869 case IFLA_STATS_LINK_XSTATS_SLAVE: 870 slave = bond_slave_get_rtnl(dev); 871 if (!slave) 872 return 0; 873 bond = slave->bond; 874 break; 875 default: 876 return -EINVAL; 877 } 878 879 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BOND); 880 if (!nest) 881 return -EMSGSIZE; 882 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 883 struct bond_3ad_stats *stats; 884 885 if (slave) 886 stats = &SLAVE_AD_INFO(slave)->stats; 887 else 888 stats = &BOND_AD_INFO(bond).stats; 889 890 nest2 = nla_nest_start_noflag(skb, BOND_XSTATS_3AD); 891 if (!nest2) { 892 nla_nest_end(skb, nest); 893 return -EMSGSIZE; 894 } 895 896 if (bond_3ad_stats_fill(skb, stats)) { 897 nla_nest_cancel(skb, nest2); 898 nla_nest_end(skb, nest); 899 return -EMSGSIZE; 900 } 901 nla_nest_end(skb, nest2); 902 } 903 nla_nest_end(skb, nest); 904 905 return 0; 906} 907 908struct rtnl_link_ops bond_link_ops __read_mostly = { 909 .kind = "bond", 910 .priv_size = sizeof(struct bonding), 911 .setup = bond_setup, 912 .maxtype = IFLA_BOND_MAX, 913 .policy = bond_policy, 914 .validate = bond_validate, 915 .newlink = bond_newlink, 916 .changelink = bond_changelink, 917 .get_size = bond_get_size, 918 .fill_info = bond_fill_info, 919 .get_num_tx_queues = bond_get_num_tx_queues, 920 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number 921 as for TX queues */ 922 .fill_linkxstats = bond_fill_linkxstats, 923 .get_linkxstats_size = bond_get_linkxstats_size, 924 .slave_maxtype = IFLA_BOND_SLAVE_MAX, 925 .slave_policy = bond_slave_policy, 926 .slave_changelink = bond_slave_changelink, 927 .get_slave_size = bond_get_slave_size, 928 .fill_slave_info = bond_fill_slave_info, 929}; 930 931int __init bond_netlink_init(void) 932{ 933 return rtnl_link_register(&bond_link_ops); 934} 935 936void bond_netlink_fini(void) 937{ 938 rtnl_link_unregister(&bond_link_ops); 939} 940 941MODULE_ALIAS_RTNL_LINK("bond"); 942