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 nla_total_size(sizeof(s32)) + /* IFLA_BOND_SLAVE_PRIO */ 31 0; 32 } 33 34 static int bond_fill_slave_info(struct sk_buff *skb, 35 const struct net_device *bond_dev, 36 const struct net_device *slave_dev) 37 { 38 struct slave *slave = bond_slave_get_rtnl(slave_dev); 39 40 if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave))) 41 goto nla_put_failure; 42 43 if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link)) 44 goto nla_put_failure; 45 46 if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT, 47 slave->link_failure_count)) 48 goto nla_put_failure; 49 50 if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR, 51 slave_dev->addr_len, slave->perm_hwaddr)) 52 goto nla_put_failure; 53 54 if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, 55 READ_ONCE(slave->queue_id))) 56 goto nla_put_failure; 57 58 if (nla_put_s32(skb, IFLA_BOND_SLAVE_PRIO, slave->prio)) 59 goto nla_put_failure; 60 61 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) { 62 const struct aggregator *agg; 63 const struct port *ad_port; 64 65 ad_port = &SLAVE_AD_INFO(slave)->port; 66 agg = SLAVE_AD_INFO(slave)->port.aggregator; 67 if (agg) { 68 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID, 69 agg->aggregator_identifier)) 70 goto nla_put_failure; 71 if (nla_put_u8(skb, 72 IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE, 73 ad_port->actor_oper_port_state)) 74 goto nla_put_failure; 75 if (nla_put_u16(skb, 76 IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE, 77 ad_port->partner_oper.port_state)) 78 goto nla_put_failure; 79 } 80 } 81 82 return 0; 83 84 nla_put_failure: 85 return -EMSGSIZE; 86 } 87 88 /* Limit the max delay range to 300s */ 89 static const struct netlink_range_validation delay_range = { 90 .max = 300000, 91 }; 92 93 static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { 94 [IFLA_BOND_MODE] = { .type = NLA_U8 }, 95 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 }, 96 [IFLA_BOND_MIIMON] = { .type = NLA_U32 }, 97 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 }, 98 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 }, 99 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 }, 100 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 }, 101 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED }, 102 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 }, 103 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 }, 104 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 }, 105 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 }, 106 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 }, 107 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 }, 108 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 }, 109 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 }, 110 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 }, 111 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 }, 112 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 }, 113 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 }, 114 [IFLA_BOND_AD_LACP_ACTIVE] = { .type = NLA_U8 }, 115 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 }, 116 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 }, 117 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED }, 118 [IFLA_BOND_AD_ACTOR_SYS_PRIO] = { .type = NLA_U16 }, 119 [IFLA_BOND_AD_USER_PORT_KEY] = { .type = NLA_U16 }, 120 [IFLA_BOND_AD_ACTOR_SYSTEM] = { .type = NLA_BINARY, 121 .len = ETH_ALEN }, 122 [IFLA_BOND_TLB_DYNAMIC_LB] = { .type = NLA_U8 }, 123 [IFLA_BOND_PEER_NOTIF_DELAY] = NLA_POLICY_FULL_RANGE(NLA_U32, &delay_range), 124 [IFLA_BOND_MISSED_MAX] = { .type = NLA_U8 }, 125 [IFLA_BOND_NS_IP6_TARGET] = { .type = NLA_NESTED }, 126 [IFLA_BOND_COUPLED_CONTROL] = { .type = NLA_U8 }, 127 }; 128 129 static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = { 130 [IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 }, 131 [IFLA_BOND_SLAVE_PRIO] = { .type = NLA_S32 }, 132 }; 133 134 static int bond_validate(struct nlattr *tb[], struct nlattr *data[], 135 struct netlink_ext_ack *extack) 136 { 137 if (tb[IFLA_ADDRESS]) { 138 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 139 return -EINVAL; 140 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 141 return -EADDRNOTAVAIL; 142 } 143 return 0; 144 } 145 146 static int bond_slave_changelink(struct net_device *bond_dev, 147 struct net_device *slave_dev, 148 struct nlattr *tb[], struct nlattr *data[], 149 struct netlink_ext_ack *extack) 150 { 151 struct bonding *bond = netdev_priv(bond_dev); 152 struct bond_opt_value newval; 153 int err; 154 155 if (!data) 156 return 0; 157 158 if (data[IFLA_BOND_SLAVE_QUEUE_ID]) { 159 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]); 160 char queue_id_str[IFNAMSIZ + 7]; 161 162 /* queue_id option setting expects slave_name:queue_id */ 163 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n", 164 slave_dev->name, queue_id); 165 bond_opt_initstr(&newval, queue_id_str); 166 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval, 167 data[IFLA_BOND_SLAVE_QUEUE_ID], extack); 168 if (err) 169 return err; 170 } 171 172 if (data[IFLA_BOND_SLAVE_PRIO]) { 173 int prio = nla_get_s32(data[IFLA_BOND_SLAVE_PRIO]); 174 175 bond_opt_slave_initval(&newval, &slave_dev, prio); 176 err = __bond_opt_set(bond, BOND_OPT_PRIO, &newval, 177 data[IFLA_BOND_SLAVE_PRIO], extack); 178 if (err) 179 return err; 180 } 181 182 return 0; 183 } 184 185 static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[], 186 struct nlattr *data[], 187 struct netlink_ext_ack *extack) 188 { 189 struct bonding *bond = netdev_priv(bond_dev); 190 struct bond_opt_value newval; 191 int miimon = 0; 192 int err; 193 194 if (!data) 195 return 0; 196 197 if (data[IFLA_BOND_MODE]) { 198 int mode = nla_get_u8(data[IFLA_BOND_MODE]); 199 200 bond_opt_initval(&newval, mode); 201 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval, 202 data[IFLA_BOND_MODE], extack); 203 if (err) 204 return err; 205 } 206 if (data[IFLA_BOND_ACTIVE_SLAVE]) { 207 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]); 208 struct net_device *slave_dev; 209 char *active_slave = ""; 210 211 if (ifindex != 0) { 212 slave_dev = __dev_get_by_index(dev_net(bond_dev), 213 ifindex); 214 if (!slave_dev) 215 return -ENODEV; 216 active_slave = slave_dev->name; 217 } 218 bond_opt_initstr(&newval, active_slave); 219 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval, 220 data[IFLA_BOND_ACTIVE_SLAVE], extack); 221 if (err) 222 return err; 223 } 224 if (data[IFLA_BOND_MIIMON]) { 225 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]); 226 227 bond_opt_initval(&newval, miimon); 228 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval, 229 data[IFLA_BOND_MIIMON], extack); 230 if (err) 231 return err; 232 } 233 if (data[IFLA_BOND_UPDELAY]) { 234 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]); 235 236 bond_opt_initval(&newval, updelay); 237 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval, 238 data[IFLA_BOND_UPDELAY], extack); 239 if (err) 240 return err; 241 } 242 if (data[IFLA_BOND_DOWNDELAY]) { 243 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]); 244 245 bond_opt_initval(&newval, downdelay); 246 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval, 247 data[IFLA_BOND_DOWNDELAY], extack); 248 if (err) 249 return err; 250 } 251 if (data[IFLA_BOND_PEER_NOTIF_DELAY]) { 252 int delay = nla_get_u32(data[IFLA_BOND_PEER_NOTIF_DELAY]); 253 254 bond_opt_initval(&newval, delay); 255 err = __bond_opt_set(bond, BOND_OPT_PEER_NOTIF_DELAY, &newval, 256 data[IFLA_BOND_PEER_NOTIF_DELAY], extack); 257 if (err) 258 return err; 259 } 260 if (data[IFLA_BOND_USE_CARRIER]) { 261 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]); 262 263 bond_opt_initval(&newval, use_carrier); 264 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval, 265 data[IFLA_BOND_USE_CARRIER], extack); 266 if (err) 267 return err; 268 } 269 if (data[IFLA_BOND_ARP_INTERVAL]) { 270 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]); 271 272 if (arp_interval && miimon) { 273 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL], 274 "ARP monitoring cannot be used with MII monitoring"); 275 return -EINVAL; 276 } 277 278 bond_opt_initval(&newval, arp_interval); 279 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval, 280 data[IFLA_BOND_ARP_INTERVAL], extack); 281 if (err) 282 return err; 283 } 284 if (data[IFLA_BOND_ARP_IP_TARGET]) { 285 struct nlattr *attr; 286 int i = 0, rem; 287 288 bond_option_arp_ip_targets_clear(bond); 289 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) { 290 __be32 target; 291 292 if (nla_len(attr) < sizeof(target)) 293 return -EINVAL; 294 295 target = nla_get_be32(attr); 296 297 bond_opt_initval(&newval, (__force u64)target); 298 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS, 299 &newval, 300 data[IFLA_BOND_ARP_IP_TARGET], 301 extack); 302 if (err) 303 break; 304 i++; 305 } 306 if (i == 0 && bond->params.arp_interval) 307 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 308 if (err) 309 return err; 310 } 311 #if IS_ENABLED(CONFIG_IPV6) 312 if (data[IFLA_BOND_NS_IP6_TARGET]) { 313 struct nlattr *attr; 314 int i = 0, rem; 315 316 bond_option_ns_ip6_targets_clear(bond); 317 nla_for_each_nested(attr, data[IFLA_BOND_NS_IP6_TARGET], rem) { 318 struct in6_addr addr6; 319 320 if (nla_len(attr) < sizeof(addr6)) { 321 NL_SET_ERR_MSG(extack, "Invalid IPv6 address"); 322 return -EINVAL; 323 } 324 325 addr6 = nla_get_in6_addr(attr); 326 327 bond_opt_initextra(&newval, &addr6, sizeof(addr6)); 328 err = __bond_opt_set(bond, BOND_OPT_NS_TARGETS, 329 &newval, 330 data[IFLA_BOND_NS_IP6_TARGET], 331 extack); 332 if (err) 333 break; 334 i++; 335 } 336 if (i == 0 && bond->params.arp_interval) 337 netdev_warn(bond->dev, "Removing last ns target with arp_interval on\n"); 338 if (err) 339 return err; 340 } 341 #endif 342 if (data[IFLA_BOND_ARP_VALIDATE]) { 343 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]); 344 345 if (arp_validate && miimon) { 346 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL], 347 "ARP validating cannot be used with MII monitoring"); 348 return -EINVAL; 349 } 350 351 bond_opt_initval(&newval, arp_validate); 352 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval, 353 data[IFLA_BOND_ARP_VALIDATE], extack); 354 if (err) 355 return err; 356 } 357 if (data[IFLA_BOND_ARP_ALL_TARGETS]) { 358 int arp_all_targets = 359 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]); 360 361 bond_opt_initval(&newval, arp_all_targets); 362 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval, 363 data[IFLA_BOND_ARP_ALL_TARGETS], extack); 364 if (err) 365 return err; 366 } 367 if (data[IFLA_BOND_PRIMARY]) { 368 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]); 369 struct net_device *dev; 370 char *primary = ""; 371 372 dev = __dev_get_by_index(dev_net(bond_dev), ifindex); 373 if (dev) 374 primary = dev->name; 375 376 bond_opt_initstr(&newval, primary); 377 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval, 378 data[IFLA_BOND_PRIMARY], extack); 379 if (err) 380 return err; 381 } 382 if (data[IFLA_BOND_PRIMARY_RESELECT]) { 383 int primary_reselect = 384 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]); 385 386 bond_opt_initval(&newval, primary_reselect); 387 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval, 388 data[IFLA_BOND_PRIMARY_RESELECT], extack); 389 if (err) 390 return err; 391 } 392 if (data[IFLA_BOND_FAIL_OVER_MAC]) { 393 int fail_over_mac = 394 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]); 395 396 bond_opt_initval(&newval, fail_over_mac); 397 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval, 398 data[IFLA_BOND_FAIL_OVER_MAC], extack); 399 if (err) 400 return err; 401 } 402 if (data[IFLA_BOND_XMIT_HASH_POLICY]) { 403 int xmit_hash_policy = 404 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]); 405 406 bond_opt_initval(&newval, xmit_hash_policy); 407 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval, 408 data[IFLA_BOND_XMIT_HASH_POLICY], extack); 409 if (err) 410 return err; 411 } 412 if (data[IFLA_BOND_RESEND_IGMP]) { 413 int resend_igmp = 414 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]); 415 416 bond_opt_initval(&newval, resend_igmp); 417 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval, 418 data[IFLA_BOND_RESEND_IGMP], extack); 419 if (err) 420 return err; 421 } 422 if (data[IFLA_BOND_NUM_PEER_NOTIF]) { 423 int num_peer_notif = 424 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]); 425 426 bond_opt_initval(&newval, num_peer_notif); 427 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval, 428 data[IFLA_BOND_NUM_PEER_NOTIF], extack); 429 if (err) 430 return err; 431 } 432 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) { 433 int all_slaves_active = 434 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]); 435 436 bond_opt_initval(&newval, all_slaves_active); 437 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval, 438 data[IFLA_BOND_ALL_SLAVES_ACTIVE], extack); 439 if (err) 440 return err; 441 } 442 if (data[IFLA_BOND_MIN_LINKS]) { 443 int min_links = 444 nla_get_u32(data[IFLA_BOND_MIN_LINKS]); 445 446 bond_opt_initval(&newval, min_links); 447 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval, 448 data[IFLA_BOND_MIN_LINKS], extack); 449 if (err) 450 return err; 451 } 452 if (data[IFLA_BOND_LP_INTERVAL]) { 453 int lp_interval = 454 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]); 455 456 bond_opt_initval(&newval, lp_interval); 457 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval, 458 data[IFLA_BOND_LP_INTERVAL], extack); 459 if (err) 460 return err; 461 } 462 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) { 463 int packets_per_slave = 464 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]); 465 466 bond_opt_initval(&newval, packets_per_slave); 467 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval, 468 data[IFLA_BOND_PACKETS_PER_SLAVE], extack); 469 if (err) 470 return err; 471 } 472 473 if (data[IFLA_BOND_AD_LACP_ACTIVE]) { 474 int lacp_active = nla_get_u8(data[IFLA_BOND_AD_LACP_ACTIVE]); 475 476 bond_opt_initval(&newval, lacp_active); 477 err = __bond_opt_set(bond, BOND_OPT_LACP_ACTIVE, &newval, 478 data[IFLA_BOND_AD_LACP_ACTIVE], extack); 479 if (err) 480 return err; 481 } 482 483 if (data[IFLA_BOND_AD_LACP_RATE]) { 484 int lacp_rate = 485 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]); 486 487 bond_opt_initval(&newval, lacp_rate); 488 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval, 489 data[IFLA_BOND_AD_LACP_RATE], extack); 490 if (err) 491 return err; 492 } 493 if (data[IFLA_BOND_AD_SELECT]) { 494 int ad_select = 495 nla_get_u8(data[IFLA_BOND_AD_SELECT]); 496 497 bond_opt_initval(&newval, ad_select); 498 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval, 499 data[IFLA_BOND_AD_SELECT], extack); 500 if (err) 501 return err; 502 } 503 if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) { 504 int actor_sys_prio = 505 nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]); 506 507 bond_opt_initval(&newval, actor_sys_prio); 508 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval, 509 data[IFLA_BOND_AD_ACTOR_SYS_PRIO], extack); 510 if (err) 511 return err; 512 } 513 if (data[IFLA_BOND_AD_USER_PORT_KEY]) { 514 int port_key = 515 nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]); 516 517 bond_opt_initval(&newval, port_key); 518 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval, 519 data[IFLA_BOND_AD_USER_PORT_KEY], extack); 520 if (err) 521 return err; 522 } 523 if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) { 524 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN) 525 return -EINVAL; 526 527 bond_opt_initval(&newval, 528 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM])); 529 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval, 530 data[IFLA_BOND_AD_ACTOR_SYSTEM], extack); 531 if (err) 532 return err; 533 } 534 if (data[IFLA_BOND_TLB_DYNAMIC_LB]) { 535 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]); 536 537 bond_opt_initval(&newval, dynamic_lb); 538 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval, 539 data[IFLA_BOND_TLB_DYNAMIC_LB], extack); 540 if (err) 541 return err; 542 } 543 544 if (data[IFLA_BOND_MISSED_MAX]) { 545 int missed_max = nla_get_u8(data[IFLA_BOND_MISSED_MAX]); 546 547 bond_opt_initval(&newval, missed_max); 548 err = __bond_opt_set(bond, BOND_OPT_MISSED_MAX, &newval, 549 data[IFLA_BOND_MISSED_MAX], extack); 550 if (err) 551 return err; 552 } 553 554 if (data[IFLA_BOND_COUPLED_CONTROL]) { 555 int coupled_control = nla_get_u8(data[IFLA_BOND_COUPLED_CONTROL]); 556 557 bond_opt_initval(&newval, coupled_control); 558 err = __bond_opt_set(bond, BOND_OPT_COUPLED_CONTROL, &newval, 559 data[IFLA_BOND_COUPLED_CONTROL], extack); 560 if (err) 561 return err; 562 } 563 564 return 0; 565 } 566 567 static int bond_newlink(struct net *src_net, struct net_device *bond_dev, 568 struct nlattr *tb[], struct nlattr *data[], 569 struct netlink_ext_ack *extack) 570 { 571 int err; 572 573 err = bond_changelink(bond_dev, tb, data, extack); 574 if (err < 0) 575 return err; 576 577 err = register_netdevice(bond_dev); 578 if (!err) { 579 struct bonding *bond = netdev_priv(bond_dev); 580 581 netif_carrier_off(bond_dev); 582 bond_work_init_all(bond); 583 } 584 585 return err; 586 } 587 588 static size_t bond_get_size(const struct net_device *bond_dev) 589 { 590 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */ 591 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */ 592 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */ 593 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */ 594 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */ 595 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */ 596 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */ 597 /* IFLA_BOND_ARP_IP_TARGET */ 598 nla_total_size(sizeof(struct nlattr)) + 599 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS + 600 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */ 601 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */ 602 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */ 603 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */ 604 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */ 605 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */ 606 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */ 607 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */ 608 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */ 609 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */ 610 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */ 611 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */ 612 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_ACTIVE */ 613 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */ 614 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */ 615 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */ 616 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */ 617 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */ 618 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */ 619 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/ 620 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/ 621 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */ 622 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */ 623 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */ 624 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */ 625 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PEER_NOTIF_DELAY */ 626 nla_total_size(sizeof(u8)) + /* IFLA_BOND_MISSED_MAX */ 627 /* IFLA_BOND_NS_IP6_TARGET */ 628 nla_total_size(sizeof(struct nlattr)) + 629 nla_total_size(sizeof(struct in6_addr)) * BOND_MAX_NS_TARGETS + 630 nla_total_size(sizeof(u8)) + /* IFLA_BOND_COUPLED_CONTROL */ 631 0; 632 } 633 634 static int bond_option_active_slave_get_ifindex(struct bonding *bond) 635 { 636 const struct net_device *slave; 637 int ifindex; 638 639 rcu_read_lock(); 640 slave = bond_option_active_slave_get_rcu(bond); 641 ifindex = slave ? slave->ifindex : 0; 642 rcu_read_unlock(); 643 return ifindex; 644 } 645 646 static int bond_fill_info(struct sk_buff *skb, 647 const struct net_device *bond_dev) 648 { 649 struct bonding *bond = netdev_priv(bond_dev); 650 unsigned int packets_per_slave; 651 int ifindex, i, targets_added; 652 struct nlattr *targets; 653 struct slave *primary; 654 655 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond))) 656 goto nla_put_failure; 657 658 ifindex = bond_option_active_slave_get_ifindex(bond); 659 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex)) 660 goto nla_put_failure; 661 662 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon)) 663 goto nla_put_failure; 664 665 if (nla_put_u32(skb, IFLA_BOND_UPDELAY, 666 bond->params.updelay * bond->params.miimon)) 667 goto nla_put_failure; 668 669 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY, 670 bond->params.downdelay * bond->params.miimon)) 671 goto nla_put_failure; 672 673 if (nla_put_u32(skb, IFLA_BOND_PEER_NOTIF_DELAY, 674 bond->params.peer_notif_delay * bond->params.miimon)) 675 goto nla_put_failure; 676 677 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier)) 678 goto nla_put_failure; 679 680 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval)) 681 goto nla_put_failure; 682 683 targets = nla_nest_start_noflag(skb, IFLA_BOND_ARP_IP_TARGET); 684 if (!targets) 685 goto nla_put_failure; 686 687 targets_added = 0; 688 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { 689 if (bond->params.arp_targets[i]) { 690 if (nla_put_be32(skb, i, bond->params.arp_targets[i])) 691 goto nla_put_failure; 692 targets_added = 1; 693 } 694 } 695 696 if (targets_added) 697 nla_nest_end(skb, targets); 698 else 699 nla_nest_cancel(skb, targets); 700 701 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate)) 702 goto nla_put_failure; 703 704 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS, 705 bond->params.arp_all_targets)) 706 goto nla_put_failure; 707 708 #if IS_ENABLED(CONFIG_IPV6) 709 targets = nla_nest_start(skb, IFLA_BOND_NS_IP6_TARGET); 710 if (!targets) 711 goto nla_put_failure; 712 713 targets_added = 0; 714 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { 715 if (!ipv6_addr_any(&bond->params.ns_targets[i])) { 716 if (nla_put_in6_addr(skb, i, &bond->params.ns_targets[i])) 717 goto nla_put_failure; 718 targets_added = 1; 719 } 720 } 721 722 if (targets_added) 723 nla_nest_end(skb, targets); 724 else 725 nla_nest_cancel(skb, targets); 726 #endif 727 728 primary = rtnl_dereference(bond->primary_slave); 729 if (primary && 730 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex)) 731 goto nla_put_failure; 732 733 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT, 734 bond->params.primary_reselect)) 735 goto nla_put_failure; 736 737 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC, 738 bond->params.fail_over_mac)) 739 goto nla_put_failure; 740 741 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY, 742 bond->params.xmit_policy)) 743 goto nla_put_failure; 744 745 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP, 746 bond->params.resend_igmp)) 747 goto nla_put_failure; 748 749 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF, 750 bond->params.num_peer_notif)) 751 goto nla_put_failure; 752 753 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE, 754 bond->params.all_slaves_active)) 755 goto nla_put_failure; 756 757 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS, 758 bond->params.min_links)) 759 goto nla_put_failure; 760 761 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL, 762 bond->params.lp_interval)) 763 goto nla_put_failure; 764 765 packets_per_slave = bond->params.packets_per_slave; 766 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE, 767 packets_per_slave)) 768 goto nla_put_failure; 769 770 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_ACTIVE, 771 bond->params.lacp_active)) 772 goto nla_put_failure; 773 774 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE, 775 bond->params.lacp_fast)) 776 goto nla_put_failure; 777 778 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT, 779 bond->params.ad_select)) 780 goto nla_put_failure; 781 782 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB, 783 bond->params.tlb_dynamic_lb)) 784 goto nla_put_failure; 785 786 if (nla_put_u8(skb, IFLA_BOND_MISSED_MAX, 787 bond->params.missed_max)) 788 goto nla_put_failure; 789 790 if (nla_put_u8(skb, IFLA_BOND_COUPLED_CONTROL, 791 bond->params.coupled_control)) 792 goto nla_put_failure; 793 794 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 795 struct ad_info info; 796 797 if (capable(CAP_NET_ADMIN)) { 798 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO, 799 bond->params.ad_actor_sys_prio)) 800 goto nla_put_failure; 801 802 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY, 803 bond->params.ad_user_port_key)) 804 goto nla_put_failure; 805 806 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM, 807 ETH_ALEN, &bond->params.ad_actor_system)) 808 goto nla_put_failure; 809 } 810 if (!bond_3ad_get_active_agg_info(bond, &info)) { 811 struct nlattr *nest; 812 813 nest = nla_nest_start_noflag(skb, IFLA_BOND_AD_INFO); 814 if (!nest) 815 goto nla_put_failure; 816 817 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR, 818 info.aggregator_id)) 819 goto nla_put_failure; 820 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS, 821 info.ports)) 822 goto nla_put_failure; 823 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY, 824 info.actor_key)) 825 goto nla_put_failure; 826 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY, 827 info.partner_key)) 828 goto nla_put_failure; 829 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC, 830 sizeof(info.partner_system), 831 &info.partner_system)) 832 goto nla_put_failure; 833 834 nla_nest_end(skb, nest); 835 } 836 } 837 838 return 0; 839 840 nla_put_failure: 841 return -EMSGSIZE; 842 } 843 844 static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr) 845 { 846 switch (attr) { 847 case IFLA_STATS_LINK_XSTATS: 848 case IFLA_STATS_LINK_XSTATS_SLAVE: 849 break; 850 default: 851 return 0; 852 } 853 854 return bond_3ad_stats_size() + nla_total_size(0); 855 } 856 857 static int bond_fill_linkxstats(struct sk_buff *skb, 858 const struct net_device *dev, 859 int *prividx, int attr) 860 { 861 struct nlattr *nla __maybe_unused; 862 struct slave *slave = NULL; 863 struct nlattr *nest, *nest2; 864 struct bonding *bond; 865 866 switch (attr) { 867 case IFLA_STATS_LINK_XSTATS: 868 bond = netdev_priv(dev); 869 break; 870 case IFLA_STATS_LINK_XSTATS_SLAVE: 871 slave = bond_slave_get_rtnl(dev); 872 if (!slave) 873 return 0; 874 bond = slave->bond; 875 break; 876 default: 877 return -EINVAL; 878 } 879 880 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BOND); 881 if (!nest) 882 return -EMSGSIZE; 883 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 884 struct bond_3ad_stats *stats; 885 886 if (slave) 887 stats = &SLAVE_AD_INFO(slave)->stats; 888 else 889 stats = &BOND_AD_INFO(bond).stats; 890 891 nest2 = nla_nest_start_noflag(skb, BOND_XSTATS_3AD); 892 if (!nest2) { 893 nla_nest_end(skb, nest); 894 return -EMSGSIZE; 895 } 896 897 if (bond_3ad_stats_fill(skb, stats)) { 898 nla_nest_cancel(skb, nest2); 899 nla_nest_end(skb, nest); 900 return -EMSGSIZE; 901 } 902 nla_nest_end(skb, nest2); 903 } 904 nla_nest_end(skb, nest); 905 906 return 0; 907 } 908 909 struct rtnl_link_ops bond_link_ops __read_mostly = { 910 .kind = "bond", 911 .priv_size = sizeof(struct bonding), 912 .setup = bond_setup, 913 .maxtype = IFLA_BOND_MAX, 914 .policy = bond_policy, 915 .validate = bond_validate, 916 .newlink = bond_newlink, 917 .changelink = bond_changelink, 918 .get_size = bond_get_size, 919 .fill_info = bond_fill_info, 920 .get_num_tx_queues = bond_get_num_tx_queues, 921 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number 922 as for TX queues */ 923 .fill_linkxstats = bond_fill_linkxstats, 924 .get_linkxstats_size = bond_get_linkxstats_size, 925 .slave_maxtype = IFLA_BOND_SLAVE_MAX, 926 .slave_policy = bond_slave_policy, 927 .slave_changelink = bond_slave_changelink, 928 .get_slave_size = bond_get_slave_size, 929 .fill_slave_info = bond_fill_slave_info, 930 }; 931 932 int __init bond_netlink_init(void) 933 { 934 return rtnl_link_register(&bond_link_ops); 935 } 936 937 void bond_netlink_fini(void) 938 { 939 rtnl_link_unregister(&bond_link_ops); 940 } 941 942 MODULE_ALIAS_RTNL_LINK("bond"); 943