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 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_ACTOR_PORT_PRIO */ 32 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_AD_CHURN_ACTOR_STATE */ 33 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_AD_CHURN_PARTNER_STATE */ 34 0; 35 } 36 37 static int bond_fill_slave_info(struct sk_buff *skb, 38 const struct net_device *bond_dev, 39 const struct net_device *slave_dev) 40 { 41 struct slave *slave = bond_slave_get_rtnl(slave_dev); 42 43 if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave))) 44 goto nla_put_failure; 45 46 if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link)) 47 goto nla_put_failure; 48 49 if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT, 50 slave->link_failure_count)) 51 goto nla_put_failure; 52 53 if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR, 54 slave_dev->addr_len, slave->perm_hwaddr)) 55 goto nla_put_failure; 56 57 if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, 58 READ_ONCE(slave->queue_id))) 59 goto nla_put_failure; 60 61 if (nla_put_s32(skb, IFLA_BOND_SLAVE_PRIO, slave->prio)) 62 goto nla_put_failure; 63 64 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) { 65 const struct aggregator *agg; 66 const struct port *ad_port; 67 68 ad_port = &SLAVE_AD_INFO(slave)->port; 69 agg = SLAVE_AD_INFO(slave)->port.aggregator; 70 if (agg) { 71 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID, 72 agg->aggregator_identifier)) 73 goto nla_put_failure; 74 if (nla_put_u8(skb, 75 IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE, 76 ad_port->actor_oper_port_state)) 77 goto nla_put_failure; 78 if (nla_put_u16(skb, 79 IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE, 80 ad_port->partner_oper.port_state)) 81 goto nla_put_failure; 82 83 if (nla_put_u8(skb, IFLA_BOND_SLAVE_AD_CHURN_ACTOR_STATE, 84 ad_port->sm_churn_actor_state)) 85 goto nla_put_failure; 86 if (nla_put_u8(skb, IFLA_BOND_SLAVE_AD_CHURN_PARTNER_STATE, 87 ad_port->sm_churn_partner_state)) 88 goto nla_put_failure; 89 } 90 91 if (nla_put_u16(skb, IFLA_BOND_SLAVE_ACTOR_PORT_PRIO, 92 SLAVE_AD_INFO(slave)->port_priority)) 93 goto nla_put_failure; 94 } 95 96 return 0; 97 98 nla_put_failure: 99 return -EMSGSIZE; 100 } 101 102 /* Limit the max delay range to 300s */ 103 static const struct netlink_range_validation delay_range = { 104 .max = 300000, 105 }; 106 107 static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { 108 [IFLA_BOND_MODE] = { .type = NLA_U8 }, 109 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 }, 110 [IFLA_BOND_MIIMON] = { .type = NLA_U32 }, 111 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 }, 112 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 }, 113 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 }, 114 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 }, 115 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED }, 116 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 }, 117 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 }, 118 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 }, 119 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 }, 120 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 }, 121 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 }, 122 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 }, 123 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 }, 124 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 }, 125 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 }, 126 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 }, 127 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 }, 128 [IFLA_BOND_AD_LACP_ACTIVE] = { .type = NLA_U8 }, 129 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 }, 130 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 }, 131 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED }, 132 [IFLA_BOND_AD_ACTOR_SYS_PRIO] = { .type = NLA_U16 }, 133 [IFLA_BOND_AD_USER_PORT_KEY] = { .type = NLA_U16 }, 134 [IFLA_BOND_AD_ACTOR_SYSTEM] = { .type = NLA_BINARY, 135 .len = ETH_ALEN }, 136 [IFLA_BOND_TLB_DYNAMIC_LB] = { .type = NLA_U8 }, 137 [IFLA_BOND_PEER_NOTIF_DELAY] = NLA_POLICY_FULL_RANGE(NLA_U32, &delay_range), 138 [IFLA_BOND_MISSED_MAX] = { .type = NLA_U8 }, 139 [IFLA_BOND_NS_IP6_TARGET] = { .type = NLA_NESTED }, 140 [IFLA_BOND_COUPLED_CONTROL] = { .type = NLA_U8 }, 141 [IFLA_BOND_BROADCAST_NEIGH] = { .type = NLA_U8 }, 142 }; 143 144 static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = { 145 [IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 }, 146 [IFLA_BOND_SLAVE_PRIO] = { .type = NLA_S32 }, 147 [IFLA_BOND_SLAVE_ACTOR_PORT_PRIO] = { .type = NLA_U16 }, 148 }; 149 150 static int bond_validate(struct nlattr *tb[], struct nlattr *data[], 151 struct netlink_ext_ack *extack) 152 { 153 if (tb[IFLA_ADDRESS]) { 154 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 155 return -EINVAL; 156 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 157 return -EADDRNOTAVAIL; 158 } 159 return 0; 160 } 161 162 static int bond_slave_changelink(struct net_device *bond_dev, 163 struct net_device *slave_dev, 164 struct nlattr *tb[], 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 err; 170 171 if (!data) 172 return 0; 173 174 if (data[IFLA_BOND_SLAVE_QUEUE_ID]) { 175 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]); 176 char queue_id_str[IFNAMSIZ + 7]; 177 178 /* queue_id option setting expects slave_name:queue_id */ 179 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n", 180 slave_dev->name, queue_id); 181 bond_opt_initstr(&newval, queue_id_str); 182 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval, 183 data[IFLA_BOND_SLAVE_QUEUE_ID], extack); 184 if (err) 185 return err; 186 } 187 188 if (data[IFLA_BOND_SLAVE_PRIO]) { 189 int prio = nla_get_s32(data[IFLA_BOND_SLAVE_PRIO]); 190 191 bond_opt_slave_initval(&newval, &slave_dev, prio); 192 err = __bond_opt_set(bond, BOND_OPT_PRIO, &newval, 193 data[IFLA_BOND_SLAVE_PRIO], extack); 194 if (err) 195 return err; 196 } 197 198 if (data[IFLA_BOND_SLAVE_ACTOR_PORT_PRIO]) { 199 u16 ad_prio = nla_get_u16(data[IFLA_BOND_SLAVE_ACTOR_PORT_PRIO]); 200 201 bond_opt_slave_initval(&newval, &slave_dev, ad_prio); 202 err = __bond_opt_set(bond, BOND_OPT_ACTOR_PORT_PRIO, &newval, 203 data[IFLA_BOND_SLAVE_ACTOR_PORT_PRIO], extack); 204 if (err) 205 return err; 206 } 207 208 return 0; 209 } 210 211 static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[], 212 struct nlattr *data[], 213 struct netlink_ext_ack *extack) 214 { 215 struct bonding *bond = netdev_priv(bond_dev); 216 struct bond_opt_value newval; 217 int miimon = 0; 218 int err; 219 220 if (!data) 221 return 0; 222 223 if (data[IFLA_BOND_MODE]) { 224 int mode = nla_get_u8(data[IFLA_BOND_MODE]); 225 226 bond_opt_initval(&newval, mode); 227 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval, 228 data[IFLA_BOND_MODE], extack); 229 if (err) 230 return err; 231 } 232 if (data[IFLA_BOND_ACTIVE_SLAVE]) { 233 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]); 234 struct net_device *slave_dev; 235 char *active_slave = ""; 236 237 if (ifindex != 0) { 238 slave_dev = __dev_get_by_index(dev_net(bond_dev), 239 ifindex); 240 if (!slave_dev) 241 return -ENODEV; 242 active_slave = slave_dev->name; 243 } 244 bond_opt_initstr(&newval, active_slave); 245 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval, 246 data[IFLA_BOND_ACTIVE_SLAVE], extack); 247 if (err) 248 return err; 249 } 250 if (data[IFLA_BOND_MIIMON]) { 251 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]); 252 253 bond_opt_initval(&newval, miimon); 254 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval, 255 data[IFLA_BOND_MIIMON], extack); 256 if (err) 257 return err; 258 } 259 if (data[IFLA_BOND_UPDELAY]) { 260 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]); 261 262 bond_opt_initval(&newval, updelay); 263 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval, 264 data[IFLA_BOND_UPDELAY], extack); 265 if (err) 266 return err; 267 } 268 if (data[IFLA_BOND_DOWNDELAY]) { 269 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]); 270 271 bond_opt_initval(&newval, downdelay); 272 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval, 273 data[IFLA_BOND_DOWNDELAY], extack); 274 if (err) 275 return err; 276 } 277 if (data[IFLA_BOND_PEER_NOTIF_DELAY]) { 278 int delay = nla_get_u32(data[IFLA_BOND_PEER_NOTIF_DELAY]); 279 280 bond_opt_initval(&newval, delay); 281 err = __bond_opt_set(bond, BOND_OPT_PEER_NOTIF_DELAY, &newval, 282 data[IFLA_BOND_PEER_NOTIF_DELAY], extack); 283 if (err) 284 return err; 285 } 286 if (data[IFLA_BOND_USE_CARRIER]) { 287 if (nla_get_u8(data[IFLA_BOND_USE_CARRIER]) != 1) { 288 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_USE_CARRIER], 289 "option obsolete, use_carrier cannot be disabled"); 290 return -EINVAL; 291 } 292 } 293 if (data[IFLA_BOND_ARP_INTERVAL]) { 294 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]); 295 296 if (arp_interval && miimon) { 297 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL], 298 "ARP monitoring cannot be used with MII monitoring"); 299 return -EINVAL; 300 } 301 302 bond_opt_initval(&newval, arp_interval); 303 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval, 304 data[IFLA_BOND_ARP_INTERVAL], extack); 305 if (err) 306 return err; 307 } 308 if (data[IFLA_BOND_ARP_IP_TARGET]) { 309 struct nlattr *attr; 310 int i = 0, rem; 311 312 bond_option_arp_ip_targets_clear(bond); 313 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) { 314 __be32 target; 315 316 if (nla_len(attr) < sizeof(target)) 317 return -EINVAL; 318 319 target = nla_get_be32(attr); 320 321 bond_opt_initval(&newval, (__force u64)target); 322 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS, 323 &newval, 324 data[IFLA_BOND_ARP_IP_TARGET], 325 extack); 326 if (err) 327 break; 328 i++; 329 } 330 if (i == 0 && bond->params.arp_interval) 331 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 332 if (err) 333 return err; 334 } 335 #if IS_ENABLED(CONFIG_IPV6) 336 if (data[IFLA_BOND_NS_IP6_TARGET]) { 337 struct nlattr *attr; 338 int i = 0, rem; 339 340 bond_option_ns_ip6_targets_clear(bond); 341 nla_for_each_nested(attr, data[IFLA_BOND_NS_IP6_TARGET], rem) { 342 struct in6_addr addr6; 343 344 if (nla_len(attr) < sizeof(addr6)) { 345 NL_SET_ERR_MSG(extack, "Invalid IPv6 address"); 346 return -EINVAL; 347 } 348 349 addr6 = nla_get_in6_addr(attr); 350 351 bond_opt_initextra(&newval, &addr6, sizeof(addr6)); 352 err = __bond_opt_set(bond, BOND_OPT_NS_TARGETS, 353 &newval, 354 data[IFLA_BOND_NS_IP6_TARGET], 355 extack); 356 if (err) 357 break; 358 i++; 359 } 360 if (i == 0 && bond->params.arp_interval) 361 netdev_warn(bond->dev, "Removing last ns target with arp_interval on\n"); 362 if (err) 363 return err; 364 } 365 #endif 366 if (data[IFLA_BOND_ARP_VALIDATE]) { 367 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]); 368 369 if (arp_validate && miimon) { 370 NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL], 371 "ARP validating cannot be used with MII monitoring"); 372 return -EINVAL; 373 } 374 375 bond_opt_initval(&newval, arp_validate); 376 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval, 377 data[IFLA_BOND_ARP_VALIDATE], extack); 378 if (err) 379 return err; 380 } 381 if (data[IFLA_BOND_ARP_ALL_TARGETS]) { 382 int arp_all_targets = 383 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]); 384 385 bond_opt_initval(&newval, arp_all_targets); 386 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval, 387 data[IFLA_BOND_ARP_ALL_TARGETS], extack); 388 if (err) 389 return err; 390 } 391 if (data[IFLA_BOND_PRIMARY]) { 392 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]); 393 struct net_device *dev; 394 char *primary = ""; 395 396 dev = __dev_get_by_index(dev_net(bond_dev), ifindex); 397 if (dev) 398 primary = dev->name; 399 400 bond_opt_initstr(&newval, primary); 401 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval, 402 data[IFLA_BOND_PRIMARY], extack); 403 if (err) 404 return err; 405 } 406 if (data[IFLA_BOND_PRIMARY_RESELECT]) { 407 int primary_reselect = 408 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]); 409 410 bond_opt_initval(&newval, primary_reselect); 411 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval, 412 data[IFLA_BOND_PRIMARY_RESELECT], extack); 413 if (err) 414 return err; 415 } 416 if (data[IFLA_BOND_FAIL_OVER_MAC]) { 417 int fail_over_mac = 418 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]); 419 420 bond_opt_initval(&newval, fail_over_mac); 421 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval, 422 data[IFLA_BOND_FAIL_OVER_MAC], extack); 423 if (err) 424 return err; 425 } 426 if (data[IFLA_BOND_XMIT_HASH_POLICY]) { 427 int xmit_hash_policy = 428 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]); 429 430 bond_opt_initval(&newval, xmit_hash_policy); 431 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval, 432 data[IFLA_BOND_XMIT_HASH_POLICY], extack); 433 if (err) 434 return err; 435 } 436 if (data[IFLA_BOND_RESEND_IGMP]) { 437 int resend_igmp = 438 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]); 439 440 bond_opt_initval(&newval, resend_igmp); 441 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval, 442 data[IFLA_BOND_RESEND_IGMP], extack); 443 if (err) 444 return err; 445 } 446 if (data[IFLA_BOND_NUM_PEER_NOTIF]) { 447 int num_peer_notif = 448 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]); 449 450 bond_opt_initval(&newval, num_peer_notif); 451 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval, 452 data[IFLA_BOND_NUM_PEER_NOTIF], extack); 453 if (err) 454 return err; 455 } 456 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) { 457 int all_slaves_active = 458 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]); 459 460 bond_opt_initval(&newval, all_slaves_active); 461 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval, 462 data[IFLA_BOND_ALL_SLAVES_ACTIVE], extack); 463 if (err) 464 return err; 465 } 466 if (data[IFLA_BOND_MIN_LINKS]) { 467 int min_links = 468 nla_get_u32(data[IFLA_BOND_MIN_LINKS]); 469 470 bond_opt_initval(&newval, min_links); 471 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval, 472 data[IFLA_BOND_MIN_LINKS], extack); 473 if (err) 474 return err; 475 } 476 if (data[IFLA_BOND_LP_INTERVAL]) { 477 int lp_interval = 478 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]); 479 480 bond_opt_initval(&newval, lp_interval); 481 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval, 482 data[IFLA_BOND_LP_INTERVAL], extack); 483 if (err) 484 return err; 485 } 486 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) { 487 int packets_per_slave = 488 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]); 489 490 bond_opt_initval(&newval, packets_per_slave); 491 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval, 492 data[IFLA_BOND_PACKETS_PER_SLAVE], extack); 493 if (err) 494 return err; 495 } 496 497 if (data[IFLA_BOND_AD_LACP_ACTIVE]) { 498 int lacp_active = nla_get_u8(data[IFLA_BOND_AD_LACP_ACTIVE]); 499 500 bond_opt_initval(&newval, lacp_active); 501 err = __bond_opt_set(bond, BOND_OPT_LACP_ACTIVE, &newval, 502 data[IFLA_BOND_AD_LACP_ACTIVE], extack); 503 if (err) 504 return err; 505 } 506 507 if (data[IFLA_BOND_AD_LACP_RATE]) { 508 int lacp_rate = 509 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]); 510 511 bond_opt_initval(&newval, lacp_rate); 512 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval, 513 data[IFLA_BOND_AD_LACP_RATE], extack); 514 if (err) 515 return err; 516 } 517 if (data[IFLA_BOND_AD_SELECT]) { 518 int ad_select = 519 nla_get_u8(data[IFLA_BOND_AD_SELECT]); 520 521 bond_opt_initval(&newval, ad_select); 522 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval, 523 data[IFLA_BOND_AD_SELECT], extack); 524 if (err) 525 return err; 526 } 527 if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) { 528 int actor_sys_prio = 529 nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]); 530 531 bond_opt_initval(&newval, actor_sys_prio); 532 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval, 533 data[IFLA_BOND_AD_ACTOR_SYS_PRIO], extack); 534 if (err) 535 return err; 536 } 537 if (data[IFLA_BOND_AD_USER_PORT_KEY]) { 538 int port_key = 539 nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]); 540 541 bond_opt_initval(&newval, port_key); 542 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval, 543 data[IFLA_BOND_AD_USER_PORT_KEY], extack); 544 if (err) 545 return err; 546 } 547 if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) { 548 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN) 549 return -EINVAL; 550 551 bond_opt_initval(&newval, 552 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM])); 553 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval, 554 data[IFLA_BOND_AD_ACTOR_SYSTEM], extack); 555 if (err) 556 return err; 557 } 558 if (data[IFLA_BOND_TLB_DYNAMIC_LB]) { 559 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]); 560 561 bond_opt_initval(&newval, dynamic_lb); 562 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval, 563 data[IFLA_BOND_TLB_DYNAMIC_LB], extack); 564 if (err) 565 return err; 566 } 567 568 if (data[IFLA_BOND_MISSED_MAX]) { 569 int missed_max = nla_get_u8(data[IFLA_BOND_MISSED_MAX]); 570 571 bond_opt_initval(&newval, missed_max); 572 err = __bond_opt_set(bond, BOND_OPT_MISSED_MAX, &newval, 573 data[IFLA_BOND_MISSED_MAX], extack); 574 if (err) 575 return err; 576 } 577 578 if (data[IFLA_BOND_COUPLED_CONTROL]) { 579 int coupled_control = nla_get_u8(data[IFLA_BOND_COUPLED_CONTROL]); 580 581 bond_opt_initval(&newval, coupled_control); 582 err = __bond_opt_set(bond, BOND_OPT_COUPLED_CONTROL, &newval, 583 data[IFLA_BOND_COUPLED_CONTROL], extack); 584 if (err) 585 return err; 586 } 587 588 if (data[IFLA_BOND_BROADCAST_NEIGH]) { 589 int broadcast_neigh = nla_get_u8(data[IFLA_BOND_BROADCAST_NEIGH]); 590 591 bond_opt_initval(&newval, broadcast_neigh); 592 err = __bond_opt_set(bond, BOND_OPT_BROADCAST_NEIGH, &newval, 593 data[IFLA_BOND_BROADCAST_NEIGH], extack); 594 if (err) 595 return err; 596 } 597 598 return 0; 599 } 600 601 static int bond_newlink(struct net_device *bond_dev, 602 struct rtnl_newlink_params *params, 603 struct netlink_ext_ack *extack) 604 { 605 struct bonding *bond = netdev_priv(bond_dev); 606 struct nlattr **data = params->data; 607 struct nlattr **tb = params->tb; 608 int err; 609 610 err = register_netdevice(bond_dev); 611 if (err) 612 return err; 613 614 netif_carrier_off(bond_dev); 615 bond_work_init_all(bond); 616 617 err = bond_changelink(bond_dev, tb, data, extack); 618 if (err) { 619 bond_work_cancel_all(bond); 620 unregister_netdevice(bond_dev); 621 } 622 623 return err; 624 } 625 626 static size_t bond_get_size(const struct net_device *bond_dev) 627 { 628 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */ 629 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */ 630 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */ 631 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */ 632 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */ 633 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */ 634 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */ 635 /* IFLA_BOND_ARP_IP_TARGET */ 636 nla_total_size(sizeof(struct nlattr)) + 637 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS + 638 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */ 639 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */ 640 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */ 641 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */ 642 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */ 643 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */ 644 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */ 645 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */ 646 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */ 647 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */ 648 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */ 649 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */ 650 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_ACTIVE */ 651 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */ 652 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */ 653 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */ 654 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */ 655 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */ 656 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */ 657 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/ 658 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/ 659 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */ 660 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */ 661 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */ 662 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */ 663 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PEER_NOTIF_DELAY */ 664 nla_total_size(sizeof(u8)) + /* IFLA_BOND_MISSED_MAX */ 665 /* IFLA_BOND_NS_IP6_TARGET */ 666 nla_total_size(sizeof(struct nlattr)) + 667 nla_total_size(sizeof(struct in6_addr)) * BOND_MAX_NS_TARGETS + 668 nla_total_size(sizeof(u8)) + /* IFLA_BOND_COUPLED_CONTROL */ 669 nla_total_size(sizeof(u8)) + /* IFLA_BOND_BROADCAST_NEIGH */ 670 0; 671 } 672 673 static int bond_option_active_slave_get_ifindex(struct bonding *bond) 674 { 675 const struct net_device *slave; 676 int ifindex; 677 678 rcu_read_lock(); 679 slave = bond_option_active_slave_get_rcu(bond); 680 ifindex = slave ? slave->ifindex : 0; 681 rcu_read_unlock(); 682 return ifindex; 683 } 684 685 static int bond_fill_info(struct sk_buff *skb, 686 const struct net_device *bond_dev) 687 { 688 struct bonding *bond = netdev_priv(bond_dev); 689 unsigned int packets_per_slave; 690 int ifindex, i, targets_added; 691 struct nlattr *targets; 692 struct slave *primary; 693 694 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond))) 695 goto nla_put_failure; 696 697 ifindex = bond_option_active_slave_get_ifindex(bond); 698 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex)) 699 goto nla_put_failure; 700 701 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon)) 702 goto nla_put_failure; 703 704 if (nla_put_u32(skb, IFLA_BOND_UPDELAY, 705 bond->params.updelay * bond->params.miimon)) 706 goto nla_put_failure; 707 708 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY, 709 bond->params.downdelay * bond->params.miimon)) 710 goto nla_put_failure; 711 712 if (nla_put_u32(skb, IFLA_BOND_PEER_NOTIF_DELAY, 713 bond->params.peer_notif_delay * bond->params.miimon)) 714 goto nla_put_failure; 715 716 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, 1)) 717 goto nla_put_failure; 718 719 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval)) 720 goto nla_put_failure; 721 722 targets = nla_nest_start_noflag(skb, IFLA_BOND_ARP_IP_TARGET); 723 if (!targets) 724 goto nla_put_failure; 725 726 targets_added = 0; 727 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { 728 if (bond->params.arp_targets[i]) { 729 if (nla_put_be32(skb, i, bond->params.arp_targets[i])) 730 goto nla_put_failure; 731 targets_added = 1; 732 } 733 } 734 735 if (targets_added) 736 nla_nest_end(skb, targets); 737 else 738 nla_nest_cancel(skb, targets); 739 740 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate)) 741 goto nla_put_failure; 742 743 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS, 744 bond->params.arp_all_targets)) 745 goto nla_put_failure; 746 747 #if IS_ENABLED(CONFIG_IPV6) 748 targets = nla_nest_start(skb, IFLA_BOND_NS_IP6_TARGET); 749 if (!targets) 750 goto nla_put_failure; 751 752 targets_added = 0; 753 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { 754 if (!ipv6_addr_any(&bond->params.ns_targets[i])) { 755 if (nla_put_in6_addr(skb, i, &bond->params.ns_targets[i])) 756 goto nla_put_failure; 757 targets_added = 1; 758 } 759 } 760 761 if (targets_added) 762 nla_nest_end(skb, targets); 763 else 764 nla_nest_cancel(skb, targets); 765 #endif 766 767 primary = rtnl_dereference(bond->primary_slave); 768 if (primary && 769 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex)) 770 goto nla_put_failure; 771 772 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT, 773 bond->params.primary_reselect)) 774 goto nla_put_failure; 775 776 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC, 777 bond->params.fail_over_mac)) 778 goto nla_put_failure; 779 780 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY, 781 bond->params.xmit_policy)) 782 goto nla_put_failure; 783 784 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP, 785 bond->params.resend_igmp)) 786 goto nla_put_failure; 787 788 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF, 789 bond->params.num_peer_notif)) 790 goto nla_put_failure; 791 792 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE, 793 bond->params.all_slaves_active)) 794 goto nla_put_failure; 795 796 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS, 797 bond->params.min_links)) 798 goto nla_put_failure; 799 800 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL, 801 bond->params.lp_interval)) 802 goto nla_put_failure; 803 804 packets_per_slave = bond->params.packets_per_slave; 805 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE, 806 packets_per_slave)) 807 goto nla_put_failure; 808 809 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_ACTIVE, 810 bond->params.lacp_active)) 811 goto nla_put_failure; 812 813 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE, 814 bond->params.lacp_fast)) 815 goto nla_put_failure; 816 817 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT, 818 bond->params.ad_select)) 819 goto nla_put_failure; 820 821 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB, 822 bond->params.tlb_dynamic_lb)) 823 goto nla_put_failure; 824 825 if (nla_put_u8(skb, IFLA_BOND_MISSED_MAX, 826 bond->params.missed_max)) 827 goto nla_put_failure; 828 829 if (nla_put_u8(skb, IFLA_BOND_COUPLED_CONTROL, 830 bond->params.coupled_control)) 831 goto nla_put_failure; 832 833 if (nla_put_u8(skb, IFLA_BOND_BROADCAST_NEIGH, 834 bond->params.broadcast_neighbor)) 835 goto nla_put_failure; 836 837 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 838 struct ad_info info; 839 840 if (capable(CAP_NET_ADMIN)) { 841 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO, 842 bond->params.ad_actor_sys_prio)) 843 goto nla_put_failure; 844 845 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY, 846 bond->params.ad_user_port_key)) 847 goto nla_put_failure; 848 849 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM, 850 ETH_ALEN, &bond->params.ad_actor_system)) 851 goto nla_put_failure; 852 } 853 if (!bond_3ad_get_active_agg_info(bond, &info)) { 854 struct nlattr *nest; 855 856 nest = nla_nest_start_noflag(skb, IFLA_BOND_AD_INFO); 857 if (!nest) 858 goto nla_put_failure; 859 860 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR, 861 info.aggregator_id)) 862 goto nla_put_failure; 863 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS, 864 info.ports)) 865 goto nla_put_failure; 866 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY, 867 info.actor_key)) 868 goto nla_put_failure; 869 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY, 870 info.partner_key)) 871 goto nla_put_failure; 872 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC, 873 sizeof(info.partner_system), 874 &info.partner_system)) 875 goto nla_put_failure; 876 877 nla_nest_end(skb, nest); 878 } 879 } 880 881 return 0; 882 883 nla_put_failure: 884 return -EMSGSIZE; 885 } 886 887 static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr) 888 { 889 switch (attr) { 890 case IFLA_STATS_LINK_XSTATS: 891 case IFLA_STATS_LINK_XSTATS_SLAVE: 892 break; 893 default: 894 return 0; 895 } 896 897 return bond_3ad_stats_size() + nla_total_size(0); 898 } 899 900 static int bond_fill_linkxstats(struct sk_buff *skb, 901 const struct net_device *dev, 902 int *prividx, int attr) 903 { 904 struct nlattr *nla __maybe_unused; 905 struct slave *slave = NULL; 906 struct nlattr *nest, *nest2; 907 struct bonding *bond; 908 909 switch (attr) { 910 case IFLA_STATS_LINK_XSTATS: 911 bond = netdev_priv(dev); 912 break; 913 case IFLA_STATS_LINK_XSTATS_SLAVE: 914 slave = bond_slave_get_rtnl(dev); 915 if (!slave) 916 return 0; 917 bond = slave->bond; 918 break; 919 default: 920 return -EINVAL; 921 } 922 923 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BOND); 924 if (!nest) 925 return -EMSGSIZE; 926 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 927 struct bond_3ad_stats *stats; 928 929 if (slave) 930 stats = &SLAVE_AD_INFO(slave)->stats; 931 else 932 stats = &BOND_AD_INFO(bond).stats; 933 934 nest2 = nla_nest_start_noflag(skb, BOND_XSTATS_3AD); 935 if (!nest2) { 936 nla_nest_end(skb, nest); 937 return -EMSGSIZE; 938 } 939 940 if (bond_3ad_stats_fill(skb, stats)) { 941 nla_nest_cancel(skb, nest2); 942 nla_nest_end(skb, nest); 943 return -EMSGSIZE; 944 } 945 nla_nest_end(skb, nest2); 946 } 947 nla_nest_end(skb, nest); 948 949 return 0; 950 } 951 952 struct rtnl_link_ops bond_link_ops __read_mostly = { 953 .kind = "bond", 954 .priv_size = sizeof(struct bonding), 955 .setup = bond_setup, 956 .maxtype = IFLA_BOND_MAX, 957 .policy = bond_policy, 958 .validate = bond_validate, 959 .newlink = bond_newlink, 960 .changelink = bond_changelink, 961 .get_size = bond_get_size, 962 .fill_info = bond_fill_info, 963 .get_num_tx_queues = bond_get_num_tx_queues, 964 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number 965 as for TX queues */ 966 .fill_linkxstats = bond_fill_linkxstats, 967 .get_linkxstats_size = bond_get_linkxstats_size, 968 .slave_maxtype = IFLA_BOND_SLAVE_MAX, 969 .slave_policy = bond_slave_policy, 970 .slave_changelink = bond_slave_changelink, 971 .get_slave_size = bond_get_slave_size, 972 .fill_slave_info = bond_fill_slave_info, 973 }; 974 975 int __init bond_netlink_init(void) 976 { 977 return rtnl_link_register(&bond_link_ops); 978 } 979 980 void bond_netlink_fini(void) 981 { 982 rtnl_link_unregister(&bond_link_ops); 983 } 984 985 MODULE_ALIAS_RTNL_LINK("bond"); 986