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 if (err) 156 return err; 157 } 158 159 return 0; 160 } 161 162 static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[], 163 struct nlattr *data[], 164 struct netlink_ext_ack *extack) 165 { 166 struct bonding *bond = netdev_priv(bond_dev); 167 struct bond_opt_value newval; 168 int miimon = 0; 169 int err; 170 171 if (!data) 172 return 0; 173 174 if (data[IFLA_BOND_MODE]) { 175 int mode = nla_get_u8(data[IFLA_BOND_MODE]); 176 177 bond_opt_initval(&newval, mode); 178 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval); 179 if (err) 180 return err; 181 } 182 if (data[IFLA_BOND_ACTIVE_SLAVE]) { 183 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]); 184 struct net_device *slave_dev; 185 char *active_slave = ""; 186 187 if (ifindex != 0) { 188 slave_dev = __dev_get_by_index(dev_net(bond_dev), 189 ifindex); 190 if (!slave_dev) 191 return -ENODEV; 192 active_slave = slave_dev->name; 193 } 194 bond_opt_initstr(&newval, active_slave); 195 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval); 196 if (err) 197 return err; 198 } 199 if (data[IFLA_BOND_MIIMON]) { 200 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]); 201 202 bond_opt_initval(&newval, miimon); 203 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval); 204 if (err) 205 return err; 206 } 207 if (data[IFLA_BOND_UPDELAY]) { 208 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]); 209 210 bond_opt_initval(&newval, updelay); 211 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval); 212 if (err) 213 return err; 214 } 215 if (data[IFLA_BOND_DOWNDELAY]) { 216 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]); 217 218 bond_opt_initval(&newval, downdelay); 219 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval); 220 if (err) 221 return err; 222 } 223 if (data[IFLA_BOND_PEER_NOTIF_DELAY]) { 224 int delay = nla_get_u32(data[IFLA_BOND_PEER_NOTIF_DELAY]); 225 226 bond_opt_initval(&newval, delay); 227 err = __bond_opt_set(bond, BOND_OPT_PEER_NOTIF_DELAY, &newval); 228 if (err) 229 return err; 230 } 231 if (data[IFLA_BOND_USE_CARRIER]) { 232 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]); 233 234 bond_opt_initval(&newval, use_carrier); 235 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval); 236 if (err) 237 return err; 238 } 239 if (data[IFLA_BOND_ARP_INTERVAL]) { 240 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]); 241 242 if (arp_interval && miimon) { 243 netdev_err(bond->dev, "ARP monitoring cannot be used with MII monitoring\n"); 244 return -EINVAL; 245 } 246 247 bond_opt_initval(&newval, arp_interval); 248 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval); 249 if (err) 250 return err; 251 } 252 if (data[IFLA_BOND_ARP_IP_TARGET]) { 253 struct nlattr *attr; 254 int i = 0, rem; 255 256 bond_option_arp_ip_targets_clear(bond); 257 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) { 258 __be32 target; 259 260 if (nla_len(attr) < sizeof(target)) 261 return -EINVAL; 262 263 target = nla_get_be32(attr); 264 265 bond_opt_initval(&newval, (__force u64)target); 266 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS, 267 &newval); 268 if (err) 269 break; 270 i++; 271 } 272 if (i == 0 && bond->params.arp_interval) 273 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 274 if (err) 275 return err; 276 } 277 #if IS_ENABLED(CONFIG_IPV6) 278 if (data[IFLA_BOND_NS_IP6_TARGET]) { 279 struct nlattr *attr; 280 int i = 0, rem; 281 282 bond_option_ns_ip6_targets_clear(bond); 283 nla_for_each_nested(attr, data[IFLA_BOND_NS_IP6_TARGET], rem) { 284 struct in6_addr addr6; 285 286 if (nla_len(attr) < sizeof(addr6)) { 287 NL_SET_ERR_MSG(extack, "Invalid IPv6 address"); 288 return -EINVAL; 289 } 290 291 addr6 = nla_get_in6_addr(attr); 292 293 if (ipv6_addr_type(&addr6) & IPV6_ADDR_LINKLOCAL) { 294 NL_SET_ERR_MSG(extack, "Invalid IPv6 addr6"); 295 return -EINVAL; 296 } 297 298 bond_opt_initextra(&newval, &addr6, sizeof(addr6)); 299 err = __bond_opt_set(bond, BOND_OPT_NS_TARGETS, 300 &newval); 301 if (err) 302 break; 303 i++; 304 } 305 if (i == 0 && bond->params.arp_interval) 306 netdev_warn(bond->dev, "Removing last ns target with arp_interval on\n"); 307 if (err) 308 return err; 309 } 310 #endif 311 if (data[IFLA_BOND_ARP_VALIDATE]) { 312 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]); 313 314 if (arp_validate && miimon) { 315 netdev_err(bond->dev, "ARP validating cannot be used with MII monitoring\n"); 316 return -EINVAL; 317 } 318 319 bond_opt_initval(&newval, arp_validate); 320 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval); 321 if (err) 322 return err; 323 } 324 if (data[IFLA_BOND_ARP_ALL_TARGETS]) { 325 int arp_all_targets = 326 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]); 327 328 bond_opt_initval(&newval, arp_all_targets); 329 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval); 330 if (err) 331 return err; 332 } 333 if (data[IFLA_BOND_PRIMARY]) { 334 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]); 335 struct net_device *dev; 336 char *primary = ""; 337 338 dev = __dev_get_by_index(dev_net(bond_dev), ifindex); 339 if (dev) 340 primary = dev->name; 341 342 bond_opt_initstr(&newval, primary); 343 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval); 344 if (err) 345 return err; 346 } 347 if (data[IFLA_BOND_PRIMARY_RESELECT]) { 348 int primary_reselect = 349 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]); 350 351 bond_opt_initval(&newval, primary_reselect); 352 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval); 353 if (err) 354 return err; 355 } 356 if (data[IFLA_BOND_FAIL_OVER_MAC]) { 357 int fail_over_mac = 358 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]); 359 360 bond_opt_initval(&newval, fail_over_mac); 361 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval); 362 if (err) 363 return err; 364 } 365 if (data[IFLA_BOND_XMIT_HASH_POLICY]) { 366 int xmit_hash_policy = 367 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]); 368 369 bond_opt_initval(&newval, xmit_hash_policy); 370 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval); 371 if (err) 372 return err; 373 } 374 if (data[IFLA_BOND_RESEND_IGMP]) { 375 int resend_igmp = 376 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]); 377 378 bond_opt_initval(&newval, resend_igmp); 379 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval); 380 if (err) 381 return err; 382 } 383 if (data[IFLA_BOND_NUM_PEER_NOTIF]) { 384 int num_peer_notif = 385 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]); 386 387 bond_opt_initval(&newval, num_peer_notif); 388 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval); 389 if (err) 390 return err; 391 } 392 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) { 393 int all_slaves_active = 394 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]); 395 396 bond_opt_initval(&newval, all_slaves_active); 397 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval); 398 if (err) 399 return err; 400 } 401 if (data[IFLA_BOND_MIN_LINKS]) { 402 int min_links = 403 nla_get_u32(data[IFLA_BOND_MIN_LINKS]); 404 405 bond_opt_initval(&newval, min_links); 406 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval); 407 if (err) 408 return err; 409 } 410 if (data[IFLA_BOND_LP_INTERVAL]) { 411 int lp_interval = 412 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]); 413 414 bond_opt_initval(&newval, lp_interval); 415 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval); 416 if (err) 417 return err; 418 } 419 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) { 420 int packets_per_slave = 421 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]); 422 423 bond_opt_initval(&newval, packets_per_slave); 424 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval); 425 if (err) 426 return err; 427 } 428 429 if (data[IFLA_BOND_AD_LACP_ACTIVE]) { 430 int lacp_active = nla_get_u8(data[IFLA_BOND_AD_LACP_ACTIVE]); 431 432 bond_opt_initval(&newval, lacp_active); 433 err = __bond_opt_set(bond, BOND_OPT_LACP_ACTIVE, &newval); 434 if (err) 435 return err; 436 } 437 438 if (data[IFLA_BOND_AD_LACP_RATE]) { 439 int lacp_rate = 440 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]); 441 442 bond_opt_initval(&newval, lacp_rate); 443 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval); 444 if (err) 445 return err; 446 } 447 if (data[IFLA_BOND_AD_SELECT]) { 448 int ad_select = 449 nla_get_u8(data[IFLA_BOND_AD_SELECT]); 450 451 bond_opt_initval(&newval, ad_select); 452 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval); 453 if (err) 454 return err; 455 } 456 if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) { 457 int actor_sys_prio = 458 nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]); 459 460 bond_opt_initval(&newval, actor_sys_prio); 461 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval); 462 if (err) 463 return err; 464 } 465 if (data[IFLA_BOND_AD_USER_PORT_KEY]) { 466 int port_key = 467 nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]); 468 469 bond_opt_initval(&newval, port_key); 470 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval); 471 if (err) 472 return err; 473 } 474 if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) { 475 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN) 476 return -EINVAL; 477 478 bond_opt_initval(&newval, 479 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM])); 480 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval); 481 if (err) 482 return err; 483 } 484 if (data[IFLA_BOND_TLB_DYNAMIC_LB]) { 485 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]); 486 487 bond_opt_initval(&newval, dynamic_lb); 488 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval); 489 if (err) 490 return err; 491 } 492 493 if (data[IFLA_BOND_MISSED_MAX]) { 494 int missed_max = nla_get_u8(data[IFLA_BOND_MISSED_MAX]); 495 496 bond_opt_initval(&newval, missed_max); 497 err = __bond_opt_set(bond, BOND_OPT_MISSED_MAX, &newval); 498 if (err) 499 return err; 500 } 501 502 return 0; 503 } 504 505 static int bond_newlink(struct net *src_net, struct net_device *bond_dev, 506 struct nlattr *tb[], struct nlattr *data[], 507 struct netlink_ext_ack *extack) 508 { 509 int err; 510 511 err = bond_changelink(bond_dev, tb, data, extack); 512 if (err < 0) 513 return err; 514 515 err = register_netdevice(bond_dev); 516 if (!err) { 517 struct bonding *bond = netdev_priv(bond_dev); 518 519 netif_carrier_off(bond_dev); 520 bond_work_init_all(bond); 521 } 522 523 return err; 524 } 525 526 static size_t bond_get_size(const struct net_device *bond_dev) 527 { 528 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */ 529 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */ 530 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */ 531 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */ 532 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */ 533 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */ 534 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */ 535 /* IFLA_BOND_ARP_IP_TARGET */ 536 nla_total_size(sizeof(struct nlattr)) + 537 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS + 538 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */ 539 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */ 540 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */ 541 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */ 542 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */ 543 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */ 544 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */ 545 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */ 546 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */ 547 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */ 548 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */ 549 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */ 550 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_ACTIVE */ 551 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */ 552 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */ 553 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */ 554 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */ 555 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */ 556 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */ 557 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/ 558 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/ 559 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */ 560 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */ 561 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */ 562 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */ 563 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PEER_NOTIF_DELAY */ 564 nla_total_size(sizeof(u8)) + /* IFLA_BOND_MISSED_MAX */ 565 /* IFLA_BOND_NS_IP6_TARGET */ 566 nla_total_size(sizeof(struct nlattr)) + 567 nla_total_size(sizeof(struct in6_addr)) * BOND_MAX_NS_TARGETS + 568 0; 569 } 570 571 static int bond_option_active_slave_get_ifindex(struct bonding *bond) 572 { 573 const struct net_device *slave; 574 int ifindex; 575 576 rcu_read_lock(); 577 slave = bond_option_active_slave_get_rcu(bond); 578 ifindex = slave ? slave->ifindex : 0; 579 rcu_read_unlock(); 580 return ifindex; 581 } 582 583 static int bond_fill_info(struct sk_buff *skb, 584 const struct net_device *bond_dev) 585 { 586 struct bonding *bond = netdev_priv(bond_dev); 587 unsigned int packets_per_slave; 588 int ifindex, i, targets_added; 589 struct nlattr *targets; 590 struct slave *primary; 591 592 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond))) 593 goto nla_put_failure; 594 595 ifindex = bond_option_active_slave_get_ifindex(bond); 596 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex)) 597 goto nla_put_failure; 598 599 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon)) 600 goto nla_put_failure; 601 602 if (nla_put_u32(skb, IFLA_BOND_UPDELAY, 603 bond->params.updelay * bond->params.miimon)) 604 goto nla_put_failure; 605 606 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY, 607 bond->params.downdelay * bond->params.miimon)) 608 goto nla_put_failure; 609 610 if (nla_put_u32(skb, IFLA_BOND_PEER_NOTIF_DELAY, 611 bond->params.peer_notif_delay * bond->params.miimon)) 612 goto nla_put_failure; 613 614 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier)) 615 goto nla_put_failure; 616 617 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval)) 618 goto nla_put_failure; 619 620 targets = nla_nest_start_noflag(skb, IFLA_BOND_ARP_IP_TARGET); 621 if (!targets) 622 goto nla_put_failure; 623 624 targets_added = 0; 625 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { 626 if (bond->params.arp_targets[i]) { 627 if (nla_put_be32(skb, i, bond->params.arp_targets[i])) 628 goto nla_put_failure; 629 targets_added = 1; 630 } 631 } 632 633 if (targets_added) 634 nla_nest_end(skb, targets); 635 else 636 nla_nest_cancel(skb, targets); 637 638 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate)) 639 goto nla_put_failure; 640 641 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS, 642 bond->params.arp_all_targets)) 643 goto nla_put_failure; 644 645 #if IS_ENABLED(CONFIG_IPV6) 646 targets = nla_nest_start(skb, IFLA_BOND_NS_IP6_TARGET); 647 if (!targets) 648 goto nla_put_failure; 649 650 targets_added = 0; 651 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { 652 if (!ipv6_addr_any(&bond->params.ns_targets[i])) { 653 if (nla_put_in6_addr(skb, i, &bond->params.ns_targets[i])) 654 goto nla_put_failure; 655 targets_added = 1; 656 } 657 } 658 659 if (targets_added) 660 nla_nest_end(skb, targets); 661 else 662 nla_nest_cancel(skb, targets); 663 #endif 664 665 primary = rtnl_dereference(bond->primary_slave); 666 if (primary && 667 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex)) 668 goto nla_put_failure; 669 670 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT, 671 bond->params.primary_reselect)) 672 goto nla_put_failure; 673 674 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC, 675 bond->params.fail_over_mac)) 676 goto nla_put_failure; 677 678 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY, 679 bond->params.xmit_policy)) 680 goto nla_put_failure; 681 682 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP, 683 bond->params.resend_igmp)) 684 goto nla_put_failure; 685 686 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF, 687 bond->params.num_peer_notif)) 688 goto nla_put_failure; 689 690 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE, 691 bond->params.all_slaves_active)) 692 goto nla_put_failure; 693 694 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS, 695 bond->params.min_links)) 696 goto nla_put_failure; 697 698 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL, 699 bond->params.lp_interval)) 700 goto nla_put_failure; 701 702 packets_per_slave = bond->params.packets_per_slave; 703 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE, 704 packets_per_slave)) 705 goto nla_put_failure; 706 707 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_ACTIVE, 708 bond->params.lacp_active)) 709 goto nla_put_failure; 710 711 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE, 712 bond->params.lacp_fast)) 713 goto nla_put_failure; 714 715 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT, 716 bond->params.ad_select)) 717 goto nla_put_failure; 718 719 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB, 720 bond->params.tlb_dynamic_lb)) 721 goto nla_put_failure; 722 723 if (nla_put_u8(skb, IFLA_BOND_MISSED_MAX, 724 bond->params.missed_max)) 725 goto nla_put_failure; 726 727 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 728 struct ad_info info; 729 730 if (capable(CAP_NET_ADMIN)) { 731 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO, 732 bond->params.ad_actor_sys_prio)) 733 goto nla_put_failure; 734 735 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY, 736 bond->params.ad_user_port_key)) 737 goto nla_put_failure; 738 739 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM, 740 ETH_ALEN, &bond->params.ad_actor_system)) 741 goto nla_put_failure; 742 } 743 if (!bond_3ad_get_active_agg_info(bond, &info)) { 744 struct nlattr *nest; 745 746 nest = nla_nest_start_noflag(skb, IFLA_BOND_AD_INFO); 747 if (!nest) 748 goto nla_put_failure; 749 750 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR, 751 info.aggregator_id)) 752 goto nla_put_failure; 753 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS, 754 info.ports)) 755 goto nla_put_failure; 756 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY, 757 info.actor_key)) 758 goto nla_put_failure; 759 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY, 760 info.partner_key)) 761 goto nla_put_failure; 762 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC, 763 sizeof(info.partner_system), 764 &info.partner_system)) 765 goto nla_put_failure; 766 767 nla_nest_end(skb, nest); 768 } 769 } 770 771 return 0; 772 773 nla_put_failure: 774 return -EMSGSIZE; 775 } 776 777 static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr) 778 { 779 switch (attr) { 780 case IFLA_STATS_LINK_XSTATS: 781 case IFLA_STATS_LINK_XSTATS_SLAVE: 782 break; 783 default: 784 return 0; 785 } 786 787 return bond_3ad_stats_size() + nla_total_size(0); 788 } 789 790 static int bond_fill_linkxstats(struct sk_buff *skb, 791 const struct net_device *dev, 792 int *prividx, int attr) 793 { 794 struct nlattr *nla __maybe_unused; 795 struct slave *slave = NULL; 796 struct nlattr *nest, *nest2; 797 struct bonding *bond; 798 799 switch (attr) { 800 case IFLA_STATS_LINK_XSTATS: 801 bond = netdev_priv(dev); 802 break; 803 case IFLA_STATS_LINK_XSTATS_SLAVE: 804 slave = bond_slave_get_rtnl(dev); 805 if (!slave) 806 return 0; 807 bond = slave->bond; 808 break; 809 default: 810 return -EINVAL; 811 } 812 813 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BOND); 814 if (!nest) 815 return -EMSGSIZE; 816 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 817 struct bond_3ad_stats *stats; 818 819 if (slave) 820 stats = &SLAVE_AD_INFO(slave)->stats; 821 else 822 stats = &BOND_AD_INFO(bond).stats; 823 824 nest2 = nla_nest_start_noflag(skb, BOND_XSTATS_3AD); 825 if (!nest2) { 826 nla_nest_end(skb, nest); 827 return -EMSGSIZE; 828 } 829 830 if (bond_3ad_stats_fill(skb, stats)) { 831 nla_nest_cancel(skb, nest2); 832 nla_nest_end(skb, nest); 833 return -EMSGSIZE; 834 } 835 nla_nest_end(skb, nest2); 836 } 837 nla_nest_end(skb, nest); 838 839 return 0; 840 } 841 842 struct rtnl_link_ops bond_link_ops __read_mostly = { 843 .kind = "bond", 844 .priv_size = sizeof(struct bonding), 845 .setup = bond_setup, 846 .maxtype = IFLA_BOND_MAX, 847 .policy = bond_policy, 848 .validate = bond_validate, 849 .newlink = bond_newlink, 850 .changelink = bond_changelink, 851 .get_size = bond_get_size, 852 .fill_info = bond_fill_info, 853 .get_num_tx_queues = bond_get_num_tx_queues, 854 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number 855 as for TX queues */ 856 .fill_linkxstats = bond_fill_linkxstats, 857 .get_linkxstats_size = bond_get_linkxstats_size, 858 .slave_maxtype = IFLA_BOND_SLAVE_MAX, 859 .slave_policy = bond_slave_policy, 860 .slave_changelink = bond_slave_changelink, 861 .get_slave_size = bond_get_slave_size, 862 .fill_slave_info = bond_fill_slave_info, 863 }; 864 865 int __init bond_netlink_init(void) 866 { 867 return rtnl_link_register(&bond_link_ops); 868 } 869 870 void bond_netlink_fini(void) 871 { 872 rtnl_link_unregister(&bond_link_ops); 873 } 874 875 MODULE_ALIAS_RTNL_LINK("bond"); 876