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