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 19 static 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 0; 31 } 32 33 static int bond_fill_slave_info(struct sk_buff *skb, 34 const struct net_device *bond_dev, 35 const struct net_device *slave_dev) 36 { 37 struct slave *slave = bond_slave_get_rtnl(slave_dev); 38 39 if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave))) 40 goto nla_put_failure; 41 42 if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link)) 43 goto nla_put_failure; 44 45 if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT, 46 slave->link_failure_count)) 47 goto nla_put_failure; 48 49 if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR, 50 slave_dev->addr_len, slave->perm_hwaddr)) 51 goto nla_put_failure; 52 53 if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id)) 54 goto nla_put_failure; 55 56 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) { 57 const struct aggregator *agg; 58 const struct port *ad_port; 59 60 ad_port = &SLAVE_AD_INFO(slave)->port; 61 agg = SLAVE_AD_INFO(slave)->port.aggregator; 62 if (agg) { 63 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID, 64 agg->aggregator_identifier)) 65 goto nla_put_failure; 66 if (nla_put_u8(skb, 67 IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE, 68 ad_port->actor_oper_port_state)) 69 goto nla_put_failure; 70 if (nla_put_u16(skb, 71 IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE, 72 ad_port->partner_oper.port_state)) 73 goto nla_put_failure; 74 } 75 } 76 77 return 0; 78 79 nla_put_failure: 80 return -EMSGSIZE; 81 } 82 83 static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { 84 [IFLA_BOND_MODE] = { .type = NLA_U8 }, 85 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 }, 86 [IFLA_BOND_MIIMON] = { .type = NLA_U32 }, 87 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 }, 88 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 }, 89 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 }, 90 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 }, 91 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED }, 92 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 }, 93 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 }, 94 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 }, 95 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 }, 96 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 }, 97 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 }, 98 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 }, 99 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 }, 100 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 }, 101 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 }, 102 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 }, 103 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 }, 104 [IFLA_BOND_AD_LACP_ACTIVE] = { .type = NLA_U8 }, 105 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 }, 106 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 }, 107 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED }, 108 [IFLA_BOND_AD_ACTOR_SYS_PRIO] = { .type = NLA_U16 }, 109 [IFLA_BOND_AD_USER_PORT_KEY] = { .type = NLA_U16 }, 110 [IFLA_BOND_AD_ACTOR_SYSTEM] = { .type = NLA_BINARY, 111 .len = ETH_ALEN }, 112 [IFLA_BOND_TLB_DYNAMIC_LB] = { .type = NLA_U8 }, 113 [IFLA_BOND_PEER_NOTIF_DELAY] = { .type = NLA_U32 }, 114 [IFLA_BOND_MISSED_MAX] = { .type = NLA_U8 }, 115 [IFLA_BOND_NS_IP6_TARGET] = { .type = NLA_NESTED }, 116 }; 117 118 static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = { 119 [IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 }, 120 }; 121 122 static int bond_validate(struct nlattr *tb[], struct nlattr *data[], 123 struct netlink_ext_ack *extack) 124 { 125 if (tb[IFLA_ADDRESS]) { 126 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 127 return -EINVAL; 128 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 129 return -EADDRNOTAVAIL; 130 } 131 return 0; 132 } 133 134 static int bond_slave_changelink(struct net_device *bond_dev, 135 struct net_device *slave_dev, 136 struct nlattr *tb[], struct nlattr *data[], 137 struct netlink_ext_ack *extack) 138 { 139 struct bonding *bond = netdev_priv(bond_dev); 140 struct bond_opt_value newval; 141 int err; 142 143 if (!data) 144 return 0; 145 146 if (data[IFLA_BOND_SLAVE_QUEUE_ID]) { 147 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]); 148 char queue_id_str[IFNAMSIZ + 7]; 149 150 /* queue_id option setting expects slave_name:queue_id */ 151 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n", 152 slave_dev->name, queue_id); 153 bond_opt_initstr(&newval, queue_id_str); 154 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval, 155 data[IFLA_BOND_SLAVE_QUEUE_ID], extack); 156 if (err) 157 return err; 158 } 159 160 return 0; 161 } 162 163 static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[], 164 struct nlattr *data[], 165 struct netlink_ext_ack *extack) 166 { 167 struct bonding *bond = netdev_priv(bond_dev); 168 struct bond_opt_value newval; 169 int miimon = 0; 170 int err; 171 172 if (!data) 173 return 0; 174 175 if (data[IFLA_BOND_MODE]) { 176 int mode = nla_get_u8(data[IFLA_BOND_MODE]); 177 178 bond_opt_initval(&newval, mode); 179 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval, 180 data[IFLA_BOND_MODE], extack); 181 if (err) 182 return err; 183 } 184 if (data[IFLA_BOND_ACTIVE_SLAVE]) { 185 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]); 186 struct net_device *slave_dev; 187 char *active_slave = ""; 188 189 if (ifindex != 0) { 190 slave_dev = __dev_get_by_index(dev_net(bond_dev), 191 ifindex); 192 if (!slave_dev) 193 return -ENODEV; 194 active_slave = slave_dev->name; 195 } 196 bond_opt_initstr(&newval, active_slave); 197 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval, 198 data[IFLA_BOND_ACTIVE_SLAVE], extack); 199 if (err) 200 return err; 201 } 202 if (data[IFLA_BOND_MIIMON]) { 203 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]); 204 205 bond_opt_initval(&newval, miimon); 206 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval, 207 data[IFLA_BOND_MIIMON], extack); 208 if (err) 209 return err; 210 } 211 if (data[IFLA_BOND_UPDELAY]) { 212 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]); 213 214 bond_opt_initval(&newval, updelay); 215 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval, 216 data[IFLA_BOND_UPDELAY], extack); 217 if (err) 218 return err; 219 } 220 if (data[IFLA_BOND_DOWNDELAY]) { 221 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]); 222 223 bond_opt_initval(&newval, downdelay); 224 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval, 225 data[IFLA_BOND_DOWNDELAY], extack); 226 if (err) 227 return err; 228 } 229 if (data[IFLA_BOND_PEER_NOTIF_DELAY]) { 230 int delay = nla_get_u32(data[IFLA_BOND_PEER_NOTIF_DELAY]); 231 232 bond_opt_initval(&newval, delay); 233 err = __bond_opt_set(bond, BOND_OPT_PEER_NOTIF_DELAY, &newval, 234 data[IFLA_BOND_PEER_NOTIF_DELAY], extack); 235 if (err) 236 return err; 237 } 238 if (data[IFLA_BOND_USE_CARRIER]) { 239 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]); 240 241 bond_opt_initval(&newval, use_carrier); 242 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval, 243 data[IFLA_BOND_USE_CARRIER], extack); 244 if (err) 245 return err; 246 } 247 if (data[IFLA_BOND_ARP_INTERVAL]) { 248 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]); 249 250 if (arp_interval && miimon) { 251 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL], 252 "ARP monitoring cannot be used with MII monitoring"); 253 return -EINVAL; 254 } 255 256 bond_opt_initval(&newval, arp_interval); 257 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval, 258 data[IFLA_BOND_ARP_INTERVAL], extack); 259 if (err) 260 return err; 261 } 262 if (data[IFLA_BOND_ARP_IP_TARGET]) { 263 struct nlattr *attr; 264 int i = 0, rem; 265 266 bond_option_arp_ip_targets_clear(bond); 267 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) { 268 __be32 target; 269 270 if (nla_len(attr) < sizeof(target)) 271 return -EINVAL; 272 273 target = nla_get_be32(attr); 274 275 bond_opt_initval(&newval, (__force u64)target); 276 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS, 277 &newval, 278 data[IFLA_BOND_ARP_IP_TARGET], 279 extack); 280 if (err) 281 break; 282 i++; 283 } 284 if (i == 0 && bond->params.arp_interval) 285 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 286 if (err) 287 return err; 288 } 289 #if IS_ENABLED(CONFIG_IPV6) 290 if (data[IFLA_BOND_NS_IP6_TARGET]) { 291 struct nlattr *attr; 292 int i = 0, rem; 293 294 bond_option_ns_ip6_targets_clear(bond); 295 nla_for_each_nested(attr, data[IFLA_BOND_NS_IP6_TARGET], rem) { 296 struct in6_addr addr6; 297 298 if (nla_len(attr) < sizeof(addr6)) { 299 NL_SET_ERR_MSG(extack, "Invalid IPv6 address"); 300 return -EINVAL; 301 } 302 303 addr6 = nla_get_in6_addr(attr); 304 305 bond_opt_initextra(&newval, &addr6, sizeof(addr6)); 306 err = __bond_opt_set(bond, BOND_OPT_NS_TARGETS, 307 &newval, 308 data[IFLA_BOND_NS_IP6_TARGET], 309 extack); 310 if (err) 311 break; 312 i++; 313 } 314 if (i == 0 && bond->params.arp_interval) 315 netdev_warn(bond->dev, "Removing last ns target with arp_interval on\n"); 316 if (err) 317 return err; 318 } 319 #endif 320 if (data[IFLA_BOND_ARP_VALIDATE]) { 321 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]); 322 323 if (arp_validate && miimon) { 324 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL], 325 "ARP validating cannot be used with MII monitoring"); 326 return -EINVAL; 327 } 328 329 bond_opt_initval(&newval, arp_validate); 330 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval, 331 data[IFLA_BOND_ARP_VALIDATE], extack); 332 if (err) 333 return err; 334 } 335 if (data[IFLA_BOND_ARP_ALL_TARGETS]) { 336 int arp_all_targets = 337 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]); 338 339 bond_opt_initval(&newval, arp_all_targets); 340 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval, 341 data[IFLA_BOND_ARP_ALL_TARGETS], extack); 342 if (err) 343 return err; 344 } 345 if (data[IFLA_BOND_PRIMARY]) { 346 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]); 347 struct net_device *dev; 348 char *primary = ""; 349 350 dev = __dev_get_by_index(dev_net(bond_dev), ifindex); 351 if (dev) 352 primary = dev->name; 353 354 bond_opt_initstr(&newval, primary); 355 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval, 356 data[IFLA_BOND_PRIMARY], extack); 357 if (err) 358 return err; 359 } 360 if (data[IFLA_BOND_PRIMARY_RESELECT]) { 361 int primary_reselect = 362 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]); 363 364 bond_opt_initval(&newval, primary_reselect); 365 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval, 366 data[IFLA_BOND_PRIMARY_RESELECT], extack); 367 if (err) 368 return err; 369 } 370 if (data[IFLA_BOND_FAIL_OVER_MAC]) { 371 int fail_over_mac = 372 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]); 373 374 bond_opt_initval(&newval, fail_over_mac); 375 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval, 376 data[IFLA_BOND_FAIL_OVER_MAC], extack); 377 if (err) 378 return err; 379 } 380 if (data[IFLA_BOND_XMIT_HASH_POLICY]) { 381 int xmit_hash_policy = 382 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]); 383 384 bond_opt_initval(&newval, xmit_hash_policy); 385 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval, 386 data[IFLA_BOND_XMIT_HASH_POLICY], extack); 387 if (err) 388 return err; 389 } 390 if (data[IFLA_BOND_RESEND_IGMP]) { 391 int resend_igmp = 392 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]); 393 394 bond_opt_initval(&newval, resend_igmp); 395 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval, 396 data[IFLA_BOND_RESEND_IGMP], extack); 397 if (err) 398 return err; 399 } 400 if (data[IFLA_BOND_NUM_PEER_NOTIF]) { 401 int num_peer_notif = 402 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]); 403 404 bond_opt_initval(&newval, num_peer_notif); 405 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval, 406 data[IFLA_BOND_NUM_PEER_NOTIF], extack); 407 if (err) 408 return err; 409 } 410 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) { 411 int all_slaves_active = 412 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]); 413 414 bond_opt_initval(&newval, all_slaves_active); 415 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval, 416 data[IFLA_BOND_ALL_SLAVES_ACTIVE], extack); 417 if (err) 418 return err; 419 } 420 if (data[IFLA_BOND_MIN_LINKS]) { 421 int min_links = 422 nla_get_u32(data[IFLA_BOND_MIN_LINKS]); 423 424 bond_opt_initval(&newval, min_links); 425 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval, 426 data[IFLA_BOND_MIN_LINKS], extack); 427 if (err) 428 return err; 429 } 430 if (data[IFLA_BOND_LP_INTERVAL]) { 431 int lp_interval = 432 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]); 433 434 bond_opt_initval(&newval, lp_interval); 435 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval, 436 data[IFLA_BOND_LP_INTERVAL], extack); 437 if (err) 438 return err; 439 } 440 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) { 441 int packets_per_slave = 442 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]); 443 444 bond_opt_initval(&newval, packets_per_slave); 445 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval, 446 data[IFLA_BOND_PACKETS_PER_SLAVE], extack); 447 if (err) 448 return err; 449 } 450 451 if (data[IFLA_BOND_AD_LACP_ACTIVE]) { 452 int lacp_active = nla_get_u8(data[IFLA_BOND_AD_LACP_ACTIVE]); 453 454 bond_opt_initval(&newval, lacp_active); 455 err = __bond_opt_set(bond, BOND_OPT_LACP_ACTIVE, &newval, 456 data[IFLA_BOND_AD_LACP_ACTIVE], extack); 457 if (err) 458 return err; 459 } 460 461 if (data[IFLA_BOND_AD_LACP_RATE]) { 462 int lacp_rate = 463 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]); 464 465 bond_opt_initval(&newval, lacp_rate); 466 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval, 467 data[IFLA_BOND_AD_LACP_RATE], extack); 468 if (err) 469 return err; 470 } 471 if (data[IFLA_BOND_AD_SELECT]) { 472 int ad_select = 473 nla_get_u8(data[IFLA_BOND_AD_SELECT]); 474 475 bond_opt_initval(&newval, ad_select); 476 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval, 477 data[IFLA_BOND_AD_SELECT], extack); 478 if (err) 479 return err; 480 } 481 if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) { 482 int actor_sys_prio = 483 nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]); 484 485 bond_opt_initval(&newval, actor_sys_prio); 486 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval, 487 data[IFLA_BOND_AD_ACTOR_SYS_PRIO], extack); 488 if (err) 489 return err; 490 } 491 if (data[IFLA_BOND_AD_USER_PORT_KEY]) { 492 int port_key = 493 nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]); 494 495 bond_opt_initval(&newval, port_key); 496 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval, 497 data[IFLA_BOND_AD_USER_PORT_KEY], extack); 498 if (err) 499 return err; 500 } 501 if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) { 502 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN) 503 return -EINVAL; 504 505 bond_opt_initval(&newval, 506 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM])); 507 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval, 508 data[IFLA_BOND_AD_ACTOR_SYSTEM], extack); 509 if (err) 510 return err; 511 } 512 if (data[IFLA_BOND_TLB_DYNAMIC_LB]) { 513 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]); 514 515 bond_opt_initval(&newval, dynamic_lb); 516 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval, 517 data[IFLA_BOND_TLB_DYNAMIC_LB], extack); 518 if (err) 519 return err; 520 } 521 522 if (data[IFLA_BOND_MISSED_MAX]) { 523 int missed_max = nla_get_u8(data[IFLA_BOND_MISSED_MAX]); 524 525 bond_opt_initval(&newval, missed_max); 526 err = __bond_opt_set(bond, BOND_OPT_MISSED_MAX, &newval, 527 data[IFLA_BOND_MISSED_MAX], extack); 528 if (err) 529 return err; 530 } 531 532 return 0; 533 } 534 535 static int bond_newlink(struct net *src_net, struct net_device *bond_dev, 536 struct nlattr *tb[], struct nlattr *data[], 537 struct netlink_ext_ack *extack) 538 { 539 int err; 540 541 err = bond_changelink(bond_dev, tb, data, extack); 542 if (err < 0) 543 return err; 544 545 err = register_netdevice(bond_dev); 546 if (!err) { 547 struct bonding *bond = netdev_priv(bond_dev); 548 549 netif_carrier_off(bond_dev); 550 bond_work_init_all(bond); 551 } 552 553 return err; 554 } 555 556 static size_t bond_get_size(const struct net_device *bond_dev) 557 { 558 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */ 559 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */ 560 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */ 561 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */ 562 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */ 563 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */ 564 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */ 565 /* IFLA_BOND_ARP_IP_TARGET */ 566 nla_total_size(sizeof(struct nlattr)) + 567 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS + 568 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */ 569 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */ 570 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */ 571 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */ 572 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */ 573 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */ 574 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */ 575 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */ 576 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */ 577 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */ 578 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */ 579 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */ 580 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_ACTIVE */ 581 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */ 582 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */ 583 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */ 584 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */ 585 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */ 586 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */ 587 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/ 588 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/ 589 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */ 590 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */ 591 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */ 592 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */ 593 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PEER_NOTIF_DELAY */ 594 nla_total_size(sizeof(u8)) + /* IFLA_BOND_MISSED_MAX */ 595 /* IFLA_BOND_NS_IP6_TARGET */ 596 nla_total_size(sizeof(struct nlattr)) + 597 nla_total_size(sizeof(struct in6_addr)) * BOND_MAX_NS_TARGETS + 598 0; 599 } 600 601 static int bond_option_active_slave_get_ifindex(struct bonding *bond) 602 { 603 const struct net_device *slave; 604 int ifindex; 605 606 rcu_read_lock(); 607 slave = bond_option_active_slave_get_rcu(bond); 608 ifindex = slave ? slave->ifindex : 0; 609 rcu_read_unlock(); 610 return ifindex; 611 } 612 613 static int bond_fill_info(struct sk_buff *skb, 614 const struct net_device *bond_dev) 615 { 616 struct bonding *bond = netdev_priv(bond_dev); 617 unsigned int packets_per_slave; 618 int ifindex, i, targets_added; 619 struct nlattr *targets; 620 struct slave *primary; 621 622 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond))) 623 goto nla_put_failure; 624 625 ifindex = bond_option_active_slave_get_ifindex(bond); 626 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex)) 627 goto nla_put_failure; 628 629 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon)) 630 goto nla_put_failure; 631 632 if (nla_put_u32(skb, IFLA_BOND_UPDELAY, 633 bond->params.updelay * bond->params.miimon)) 634 goto nla_put_failure; 635 636 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY, 637 bond->params.downdelay * bond->params.miimon)) 638 goto nla_put_failure; 639 640 if (nla_put_u32(skb, IFLA_BOND_PEER_NOTIF_DELAY, 641 bond->params.peer_notif_delay * bond->params.miimon)) 642 goto nla_put_failure; 643 644 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier)) 645 goto nla_put_failure; 646 647 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval)) 648 goto nla_put_failure; 649 650 targets = nla_nest_start_noflag(skb, IFLA_BOND_ARP_IP_TARGET); 651 if (!targets) 652 goto nla_put_failure; 653 654 targets_added = 0; 655 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { 656 if (bond->params.arp_targets[i]) { 657 if (nla_put_be32(skb, i, bond->params.arp_targets[i])) 658 goto nla_put_failure; 659 targets_added = 1; 660 } 661 } 662 663 if (targets_added) 664 nla_nest_end(skb, targets); 665 else 666 nla_nest_cancel(skb, targets); 667 668 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate)) 669 goto nla_put_failure; 670 671 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS, 672 bond->params.arp_all_targets)) 673 goto nla_put_failure; 674 675 #if IS_ENABLED(CONFIG_IPV6) 676 targets = nla_nest_start(skb, IFLA_BOND_NS_IP6_TARGET); 677 if (!targets) 678 goto nla_put_failure; 679 680 targets_added = 0; 681 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { 682 if (!ipv6_addr_any(&bond->params.ns_targets[i])) { 683 if (nla_put_in6_addr(skb, i, &bond->params.ns_targets[i])) 684 goto nla_put_failure; 685 targets_added = 1; 686 } 687 } 688 689 if (targets_added) 690 nla_nest_end(skb, targets); 691 else 692 nla_nest_cancel(skb, targets); 693 #endif 694 695 primary = rtnl_dereference(bond->primary_slave); 696 if (primary && 697 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex)) 698 goto nla_put_failure; 699 700 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT, 701 bond->params.primary_reselect)) 702 goto nla_put_failure; 703 704 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC, 705 bond->params.fail_over_mac)) 706 goto nla_put_failure; 707 708 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY, 709 bond->params.xmit_policy)) 710 goto nla_put_failure; 711 712 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP, 713 bond->params.resend_igmp)) 714 goto nla_put_failure; 715 716 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF, 717 bond->params.num_peer_notif)) 718 goto nla_put_failure; 719 720 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE, 721 bond->params.all_slaves_active)) 722 goto nla_put_failure; 723 724 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS, 725 bond->params.min_links)) 726 goto nla_put_failure; 727 728 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL, 729 bond->params.lp_interval)) 730 goto nla_put_failure; 731 732 packets_per_slave = bond->params.packets_per_slave; 733 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE, 734 packets_per_slave)) 735 goto nla_put_failure; 736 737 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_ACTIVE, 738 bond->params.lacp_active)) 739 goto nla_put_failure; 740 741 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE, 742 bond->params.lacp_fast)) 743 goto nla_put_failure; 744 745 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT, 746 bond->params.ad_select)) 747 goto nla_put_failure; 748 749 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB, 750 bond->params.tlb_dynamic_lb)) 751 goto nla_put_failure; 752 753 if (nla_put_u8(skb, IFLA_BOND_MISSED_MAX, 754 bond->params.missed_max)) 755 goto nla_put_failure; 756 757 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 758 struct ad_info info; 759 760 if (capable(CAP_NET_ADMIN)) { 761 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO, 762 bond->params.ad_actor_sys_prio)) 763 goto nla_put_failure; 764 765 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY, 766 bond->params.ad_user_port_key)) 767 goto nla_put_failure; 768 769 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM, 770 ETH_ALEN, &bond->params.ad_actor_system)) 771 goto nla_put_failure; 772 } 773 if (!bond_3ad_get_active_agg_info(bond, &info)) { 774 struct nlattr *nest; 775 776 nest = nla_nest_start_noflag(skb, IFLA_BOND_AD_INFO); 777 if (!nest) 778 goto nla_put_failure; 779 780 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR, 781 info.aggregator_id)) 782 goto nla_put_failure; 783 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS, 784 info.ports)) 785 goto nla_put_failure; 786 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY, 787 info.actor_key)) 788 goto nla_put_failure; 789 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY, 790 info.partner_key)) 791 goto nla_put_failure; 792 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC, 793 sizeof(info.partner_system), 794 &info.partner_system)) 795 goto nla_put_failure; 796 797 nla_nest_end(skb, nest); 798 } 799 } 800 801 return 0; 802 803 nla_put_failure: 804 return -EMSGSIZE; 805 } 806 807 static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr) 808 { 809 switch (attr) { 810 case IFLA_STATS_LINK_XSTATS: 811 case IFLA_STATS_LINK_XSTATS_SLAVE: 812 break; 813 default: 814 return 0; 815 } 816 817 return bond_3ad_stats_size() + nla_total_size(0); 818 } 819 820 static int bond_fill_linkxstats(struct sk_buff *skb, 821 const struct net_device *dev, 822 int *prividx, int attr) 823 { 824 struct nlattr *nla __maybe_unused; 825 struct slave *slave = NULL; 826 struct nlattr *nest, *nest2; 827 struct bonding *bond; 828 829 switch (attr) { 830 case IFLA_STATS_LINK_XSTATS: 831 bond = netdev_priv(dev); 832 break; 833 case IFLA_STATS_LINK_XSTATS_SLAVE: 834 slave = bond_slave_get_rtnl(dev); 835 if (!slave) 836 return 0; 837 bond = slave->bond; 838 break; 839 default: 840 return -EINVAL; 841 } 842 843 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BOND); 844 if (!nest) 845 return -EMSGSIZE; 846 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 847 struct bond_3ad_stats *stats; 848 849 if (slave) 850 stats = &SLAVE_AD_INFO(slave)->stats; 851 else 852 stats = &BOND_AD_INFO(bond).stats; 853 854 nest2 = nla_nest_start_noflag(skb, BOND_XSTATS_3AD); 855 if (!nest2) { 856 nla_nest_end(skb, nest); 857 return -EMSGSIZE; 858 } 859 860 if (bond_3ad_stats_fill(skb, stats)) { 861 nla_nest_cancel(skb, nest2); 862 nla_nest_end(skb, nest); 863 return -EMSGSIZE; 864 } 865 nla_nest_end(skb, nest2); 866 } 867 nla_nest_end(skb, nest); 868 869 return 0; 870 } 871 872 struct rtnl_link_ops bond_link_ops __read_mostly = { 873 .kind = "bond", 874 .priv_size = sizeof(struct bonding), 875 .setup = bond_setup, 876 .maxtype = IFLA_BOND_MAX, 877 .policy = bond_policy, 878 .validate = bond_validate, 879 .newlink = bond_newlink, 880 .changelink = bond_changelink, 881 .get_size = bond_get_size, 882 .fill_info = bond_fill_info, 883 .get_num_tx_queues = bond_get_num_tx_queues, 884 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number 885 as for TX queues */ 886 .fill_linkxstats = bond_fill_linkxstats, 887 .get_linkxstats_size = bond_get_linkxstats_size, 888 .slave_maxtype = IFLA_BOND_SLAVE_MAX, 889 .slave_policy = bond_slave_policy, 890 .slave_changelink = bond_slave_changelink, 891 .get_slave_size = bond_get_slave_size, 892 .fill_slave_info = bond_fill_slave_info, 893 }; 894 895 int __init bond_netlink_init(void) 896 { 897 return rtnl_link_register(&bond_link_ops); 898 } 899 900 void bond_netlink_fini(void) 901 { 902 rtnl_link_unregister(&bond_link_ops); 903 } 904 905 MODULE_ALIAS_RTNL_LINK("bond"); 906