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