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 18 static size_t bond_get_slave_size(const struct net_device *bond_dev, 19 const struct net_device *slave_dev) 20 { 21 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_STATE */ 22 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_MII_STATUS */ 23 nla_total_size(sizeof(u32)) + /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */ 24 nla_total_size(MAX_ADDR_LEN) + /* IFLA_BOND_SLAVE_PERM_HWADDR */ 25 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_QUEUE_ID */ 26 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */ 27 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE */ 28 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE */ 29 0; 30 } 31 32 static int bond_fill_slave_info(struct sk_buff *skb, 33 const struct net_device *bond_dev, 34 const struct net_device *slave_dev) 35 { 36 struct slave *slave = bond_slave_get_rtnl(slave_dev); 37 38 if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave))) 39 goto nla_put_failure; 40 41 if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link)) 42 goto nla_put_failure; 43 44 if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT, 45 slave->link_failure_count)) 46 goto nla_put_failure; 47 48 if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR, 49 slave_dev->addr_len, slave->perm_hwaddr)) 50 goto nla_put_failure; 51 52 if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id)) 53 goto nla_put_failure; 54 55 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) { 56 const struct aggregator *agg; 57 const struct port *ad_port; 58 59 ad_port = &SLAVE_AD_INFO(slave)->port; 60 agg = SLAVE_AD_INFO(slave)->port.aggregator; 61 if (agg) { 62 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID, 63 agg->aggregator_identifier)) 64 goto nla_put_failure; 65 if (nla_put_u8(skb, 66 IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE, 67 ad_port->actor_oper_port_state)) 68 goto nla_put_failure; 69 if (nla_put_u16(skb, 70 IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE, 71 ad_port->partner_oper.port_state)) 72 goto nla_put_failure; 73 } 74 } 75 76 return 0; 77 78 nla_put_failure: 79 return -EMSGSIZE; 80 } 81 82 static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { 83 [IFLA_BOND_MODE] = { .type = NLA_U8 }, 84 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 }, 85 [IFLA_BOND_MIIMON] = { .type = NLA_U32 }, 86 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 }, 87 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 }, 88 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 }, 89 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 }, 90 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED }, 91 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 }, 92 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 }, 93 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 }, 94 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 }, 95 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 }, 96 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 }, 97 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 }, 98 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 }, 99 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 }, 100 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 }, 101 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 }, 102 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 }, 103 [IFLA_BOND_AD_LACP_ACTIVE] = { .type = NLA_U8 }, 104 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 }, 105 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 }, 106 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED }, 107 [IFLA_BOND_AD_ACTOR_SYS_PRIO] = { .type = NLA_U16 }, 108 [IFLA_BOND_AD_USER_PORT_KEY] = { .type = NLA_U16 }, 109 [IFLA_BOND_AD_ACTOR_SYSTEM] = { .type = NLA_BINARY, 110 .len = ETH_ALEN }, 111 [IFLA_BOND_TLB_DYNAMIC_LB] = { .type = NLA_U8 }, 112 [IFLA_BOND_PEER_NOTIF_DELAY] = { .type = NLA_U32 }, 113 [IFLA_BOND_MISSED_MAX] = { .type = NLA_U8 }, 114 }; 115 116 static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = { 117 [IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 }, 118 }; 119 120 static int bond_validate(struct nlattr *tb[], struct nlattr *data[], 121 struct netlink_ext_ack *extack) 122 { 123 if (tb[IFLA_ADDRESS]) { 124 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 125 return -EINVAL; 126 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 127 return -EADDRNOTAVAIL; 128 } 129 return 0; 130 } 131 132 static int bond_slave_changelink(struct net_device *bond_dev, 133 struct net_device *slave_dev, 134 struct nlattr *tb[], struct nlattr *data[], 135 struct netlink_ext_ack *extack) 136 { 137 struct bonding *bond = netdev_priv(bond_dev); 138 struct bond_opt_value newval; 139 int err; 140 141 if (!data) 142 return 0; 143 144 if (data[IFLA_BOND_SLAVE_QUEUE_ID]) { 145 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]); 146 char queue_id_str[IFNAMSIZ + 7]; 147 148 /* queue_id option setting expects slave_name:queue_id */ 149 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n", 150 slave_dev->name, queue_id); 151 bond_opt_initstr(&newval, queue_id_str); 152 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval); 153 if (err) 154 return err; 155 } 156 157 return 0; 158 } 159 160 static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[], 161 struct nlattr *data[], 162 struct netlink_ext_ack *extack) 163 { 164 struct bonding *bond = netdev_priv(bond_dev); 165 struct bond_opt_value newval; 166 int miimon = 0; 167 int err; 168 169 if (!data) 170 return 0; 171 172 if (data[IFLA_BOND_MODE]) { 173 int mode = nla_get_u8(data[IFLA_BOND_MODE]); 174 175 bond_opt_initval(&newval, mode); 176 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval); 177 if (err) 178 return err; 179 } 180 if (data[IFLA_BOND_ACTIVE_SLAVE]) { 181 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]); 182 struct net_device *slave_dev; 183 char *active_slave = ""; 184 185 if (ifindex != 0) { 186 slave_dev = __dev_get_by_index(dev_net(bond_dev), 187 ifindex); 188 if (!slave_dev) 189 return -ENODEV; 190 active_slave = slave_dev->name; 191 } 192 bond_opt_initstr(&newval, active_slave); 193 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval); 194 if (err) 195 return err; 196 } 197 if (data[IFLA_BOND_MIIMON]) { 198 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]); 199 200 bond_opt_initval(&newval, miimon); 201 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval); 202 if (err) 203 return err; 204 } 205 if (data[IFLA_BOND_UPDELAY]) { 206 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]); 207 208 bond_opt_initval(&newval, updelay); 209 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval); 210 if (err) 211 return err; 212 } 213 if (data[IFLA_BOND_DOWNDELAY]) { 214 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]); 215 216 bond_opt_initval(&newval, downdelay); 217 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval); 218 if (err) 219 return err; 220 } 221 if (data[IFLA_BOND_PEER_NOTIF_DELAY]) { 222 int delay = nla_get_u32(data[IFLA_BOND_PEER_NOTIF_DELAY]); 223 224 bond_opt_initval(&newval, delay); 225 err = __bond_opt_set(bond, BOND_OPT_PEER_NOTIF_DELAY, &newval); 226 if (err) 227 return err; 228 } 229 if (data[IFLA_BOND_USE_CARRIER]) { 230 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]); 231 232 bond_opt_initval(&newval, use_carrier); 233 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval); 234 if (err) 235 return err; 236 } 237 if (data[IFLA_BOND_ARP_INTERVAL]) { 238 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]); 239 240 if (arp_interval && miimon) { 241 netdev_err(bond->dev, "ARP monitoring cannot be used with MII monitoring\n"); 242 return -EINVAL; 243 } 244 245 bond_opt_initval(&newval, arp_interval); 246 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval); 247 if (err) 248 return err; 249 } 250 if (data[IFLA_BOND_ARP_IP_TARGET]) { 251 struct nlattr *attr; 252 int i = 0, rem; 253 254 bond_option_arp_ip_targets_clear(bond); 255 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) { 256 __be32 target; 257 258 if (nla_len(attr) < sizeof(target)) 259 return -EINVAL; 260 261 target = nla_get_be32(attr); 262 263 bond_opt_initval(&newval, (__force u64)target); 264 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS, 265 &newval); 266 if (err) 267 break; 268 i++; 269 } 270 if (i == 0 && bond->params.arp_interval) 271 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 272 if (err) 273 return err; 274 } 275 if (data[IFLA_BOND_ARP_VALIDATE]) { 276 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]); 277 278 if (arp_validate && miimon) { 279 netdev_err(bond->dev, "ARP validating cannot be used with MII monitoring\n"); 280 return -EINVAL; 281 } 282 283 bond_opt_initval(&newval, arp_validate); 284 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval); 285 if (err) 286 return err; 287 } 288 if (data[IFLA_BOND_ARP_ALL_TARGETS]) { 289 int arp_all_targets = 290 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]); 291 292 bond_opt_initval(&newval, arp_all_targets); 293 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval); 294 if (err) 295 return err; 296 } 297 if (data[IFLA_BOND_PRIMARY]) { 298 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]); 299 struct net_device *dev; 300 char *primary = ""; 301 302 dev = __dev_get_by_index(dev_net(bond_dev), ifindex); 303 if (dev) 304 primary = dev->name; 305 306 bond_opt_initstr(&newval, primary); 307 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval); 308 if (err) 309 return err; 310 } 311 if (data[IFLA_BOND_PRIMARY_RESELECT]) { 312 int primary_reselect = 313 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]); 314 315 bond_opt_initval(&newval, primary_reselect); 316 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval); 317 if (err) 318 return err; 319 } 320 if (data[IFLA_BOND_FAIL_OVER_MAC]) { 321 int fail_over_mac = 322 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]); 323 324 bond_opt_initval(&newval, fail_over_mac); 325 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval); 326 if (err) 327 return err; 328 } 329 if (data[IFLA_BOND_XMIT_HASH_POLICY]) { 330 int xmit_hash_policy = 331 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]); 332 333 bond_opt_initval(&newval, xmit_hash_policy); 334 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval); 335 if (err) 336 return err; 337 } 338 if (data[IFLA_BOND_RESEND_IGMP]) { 339 int resend_igmp = 340 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]); 341 342 bond_opt_initval(&newval, resend_igmp); 343 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval); 344 if (err) 345 return err; 346 } 347 if (data[IFLA_BOND_NUM_PEER_NOTIF]) { 348 int num_peer_notif = 349 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]); 350 351 bond_opt_initval(&newval, num_peer_notif); 352 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval); 353 if (err) 354 return err; 355 } 356 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) { 357 int all_slaves_active = 358 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]); 359 360 bond_opt_initval(&newval, all_slaves_active); 361 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval); 362 if (err) 363 return err; 364 } 365 if (data[IFLA_BOND_MIN_LINKS]) { 366 int min_links = 367 nla_get_u32(data[IFLA_BOND_MIN_LINKS]); 368 369 bond_opt_initval(&newval, min_links); 370 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval); 371 if (err) 372 return err; 373 } 374 if (data[IFLA_BOND_LP_INTERVAL]) { 375 int lp_interval = 376 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]); 377 378 bond_opt_initval(&newval, lp_interval); 379 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval); 380 if (err) 381 return err; 382 } 383 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) { 384 int packets_per_slave = 385 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]); 386 387 bond_opt_initval(&newval, packets_per_slave); 388 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval); 389 if (err) 390 return err; 391 } 392 393 if (data[IFLA_BOND_AD_LACP_ACTIVE]) { 394 int lacp_active = nla_get_u8(data[IFLA_BOND_AD_LACP_ACTIVE]); 395 396 bond_opt_initval(&newval, lacp_active); 397 err = __bond_opt_set(bond, BOND_OPT_LACP_ACTIVE, &newval); 398 if (err) 399 return err; 400 } 401 402 if (data[IFLA_BOND_AD_LACP_RATE]) { 403 int lacp_rate = 404 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]); 405 406 bond_opt_initval(&newval, lacp_rate); 407 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval); 408 if (err) 409 return err; 410 } 411 if (data[IFLA_BOND_AD_SELECT]) { 412 int ad_select = 413 nla_get_u8(data[IFLA_BOND_AD_SELECT]); 414 415 bond_opt_initval(&newval, ad_select); 416 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval); 417 if (err) 418 return err; 419 } 420 if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) { 421 int actor_sys_prio = 422 nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]); 423 424 bond_opt_initval(&newval, actor_sys_prio); 425 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval); 426 if (err) 427 return err; 428 } 429 if (data[IFLA_BOND_AD_USER_PORT_KEY]) { 430 int port_key = 431 nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]); 432 433 bond_opt_initval(&newval, port_key); 434 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval); 435 if (err) 436 return err; 437 } 438 if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) { 439 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN) 440 return -EINVAL; 441 442 bond_opt_initval(&newval, 443 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM])); 444 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval); 445 if (err) 446 return err; 447 } 448 if (data[IFLA_BOND_TLB_DYNAMIC_LB]) { 449 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]); 450 451 bond_opt_initval(&newval, dynamic_lb); 452 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval); 453 if (err) 454 return err; 455 } 456 457 if (data[IFLA_BOND_MISSED_MAX]) { 458 int missed_max = nla_get_u8(data[IFLA_BOND_MISSED_MAX]); 459 460 bond_opt_initval(&newval, missed_max); 461 err = __bond_opt_set(bond, BOND_OPT_MISSED_MAX, &newval); 462 if (err) 463 return err; 464 } 465 466 return 0; 467 } 468 469 static int bond_newlink(struct net *src_net, struct net_device *bond_dev, 470 struct nlattr *tb[], struct nlattr *data[], 471 struct netlink_ext_ack *extack) 472 { 473 int err; 474 475 err = bond_changelink(bond_dev, tb, data, extack); 476 if (err < 0) 477 return err; 478 479 err = register_netdevice(bond_dev); 480 if (!err) { 481 struct bonding *bond = netdev_priv(bond_dev); 482 483 netif_carrier_off(bond_dev); 484 bond_work_init_all(bond); 485 } 486 487 return err; 488 } 489 490 static size_t bond_get_size(const struct net_device *bond_dev) 491 { 492 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */ 493 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */ 494 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */ 495 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */ 496 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */ 497 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */ 498 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */ 499 /* IFLA_BOND_ARP_IP_TARGET */ 500 nla_total_size(sizeof(struct nlattr)) + 501 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS + 502 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */ 503 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */ 504 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */ 505 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */ 506 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */ 507 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */ 508 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */ 509 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */ 510 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */ 511 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */ 512 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */ 513 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */ 514 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_ACTIVE */ 515 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */ 516 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */ 517 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */ 518 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */ 519 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */ 520 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */ 521 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/ 522 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/ 523 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */ 524 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */ 525 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */ 526 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */ 527 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PEER_NOTIF_DELAY */ 528 nla_total_size(sizeof(u8)) + /* IFLA_BOND_MISSED_MAX */ 529 0; 530 } 531 532 static int bond_option_active_slave_get_ifindex(struct bonding *bond) 533 { 534 const struct net_device *slave; 535 int ifindex; 536 537 rcu_read_lock(); 538 slave = bond_option_active_slave_get_rcu(bond); 539 ifindex = slave ? slave->ifindex : 0; 540 rcu_read_unlock(); 541 return ifindex; 542 } 543 544 static int bond_fill_info(struct sk_buff *skb, 545 const struct net_device *bond_dev) 546 { 547 struct bonding *bond = netdev_priv(bond_dev); 548 unsigned int packets_per_slave; 549 int ifindex, i, targets_added; 550 struct nlattr *targets; 551 struct slave *primary; 552 553 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond))) 554 goto nla_put_failure; 555 556 ifindex = bond_option_active_slave_get_ifindex(bond); 557 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex)) 558 goto nla_put_failure; 559 560 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon)) 561 goto nla_put_failure; 562 563 if (nla_put_u32(skb, IFLA_BOND_UPDELAY, 564 bond->params.updelay * bond->params.miimon)) 565 goto nla_put_failure; 566 567 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY, 568 bond->params.downdelay * bond->params.miimon)) 569 goto nla_put_failure; 570 571 if (nla_put_u32(skb, IFLA_BOND_PEER_NOTIF_DELAY, 572 bond->params.peer_notif_delay * bond->params.miimon)) 573 goto nla_put_failure; 574 575 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier)) 576 goto nla_put_failure; 577 578 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval)) 579 goto nla_put_failure; 580 581 targets = nla_nest_start_noflag(skb, IFLA_BOND_ARP_IP_TARGET); 582 if (!targets) 583 goto nla_put_failure; 584 585 targets_added = 0; 586 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { 587 if (bond->params.arp_targets[i]) { 588 if (nla_put_be32(skb, i, bond->params.arp_targets[i])) 589 goto nla_put_failure; 590 targets_added = 1; 591 } 592 } 593 594 if (targets_added) 595 nla_nest_end(skb, targets); 596 else 597 nla_nest_cancel(skb, targets); 598 599 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate)) 600 goto nla_put_failure; 601 602 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS, 603 bond->params.arp_all_targets)) 604 goto nla_put_failure; 605 606 primary = rtnl_dereference(bond->primary_slave); 607 if (primary && 608 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex)) 609 goto nla_put_failure; 610 611 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT, 612 bond->params.primary_reselect)) 613 goto nla_put_failure; 614 615 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC, 616 bond->params.fail_over_mac)) 617 goto nla_put_failure; 618 619 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY, 620 bond->params.xmit_policy)) 621 goto nla_put_failure; 622 623 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP, 624 bond->params.resend_igmp)) 625 goto nla_put_failure; 626 627 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF, 628 bond->params.num_peer_notif)) 629 goto nla_put_failure; 630 631 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE, 632 bond->params.all_slaves_active)) 633 goto nla_put_failure; 634 635 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS, 636 bond->params.min_links)) 637 goto nla_put_failure; 638 639 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL, 640 bond->params.lp_interval)) 641 goto nla_put_failure; 642 643 packets_per_slave = bond->params.packets_per_slave; 644 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE, 645 packets_per_slave)) 646 goto nla_put_failure; 647 648 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_ACTIVE, 649 bond->params.lacp_active)) 650 goto nla_put_failure; 651 652 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE, 653 bond->params.lacp_fast)) 654 goto nla_put_failure; 655 656 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT, 657 bond->params.ad_select)) 658 goto nla_put_failure; 659 660 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB, 661 bond->params.tlb_dynamic_lb)) 662 goto nla_put_failure; 663 664 if (nla_put_u8(skb, IFLA_BOND_MISSED_MAX, 665 bond->params.missed_max)) 666 goto nla_put_failure; 667 668 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 669 struct ad_info info; 670 671 if (capable(CAP_NET_ADMIN)) { 672 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO, 673 bond->params.ad_actor_sys_prio)) 674 goto nla_put_failure; 675 676 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY, 677 bond->params.ad_user_port_key)) 678 goto nla_put_failure; 679 680 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM, 681 ETH_ALEN, &bond->params.ad_actor_system)) 682 goto nla_put_failure; 683 } 684 if (!bond_3ad_get_active_agg_info(bond, &info)) { 685 struct nlattr *nest; 686 687 nest = nla_nest_start_noflag(skb, IFLA_BOND_AD_INFO); 688 if (!nest) 689 goto nla_put_failure; 690 691 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR, 692 info.aggregator_id)) 693 goto nla_put_failure; 694 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS, 695 info.ports)) 696 goto nla_put_failure; 697 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY, 698 info.actor_key)) 699 goto nla_put_failure; 700 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY, 701 info.partner_key)) 702 goto nla_put_failure; 703 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC, 704 sizeof(info.partner_system), 705 &info.partner_system)) 706 goto nla_put_failure; 707 708 nla_nest_end(skb, nest); 709 } 710 } 711 712 return 0; 713 714 nla_put_failure: 715 return -EMSGSIZE; 716 } 717 718 static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr) 719 { 720 switch (attr) { 721 case IFLA_STATS_LINK_XSTATS: 722 case IFLA_STATS_LINK_XSTATS_SLAVE: 723 break; 724 default: 725 return 0; 726 } 727 728 return bond_3ad_stats_size() + nla_total_size(0); 729 } 730 731 static int bond_fill_linkxstats(struct sk_buff *skb, 732 const struct net_device *dev, 733 int *prividx, int attr) 734 { 735 struct nlattr *nla __maybe_unused; 736 struct slave *slave = NULL; 737 struct nlattr *nest, *nest2; 738 struct bonding *bond; 739 740 switch (attr) { 741 case IFLA_STATS_LINK_XSTATS: 742 bond = netdev_priv(dev); 743 break; 744 case IFLA_STATS_LINK_XSTATS_SLAVE: 745 slave = bond_slave_get_rtnl(dev); 746 if (!slave) 747 return 0; 748 bond = slave->bond; 749 break; 750 default: 751 return -EINVAL; 752 } 753 754 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BOND); 755 if (!nest) 756 return -EMSGSIZE; 757 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 758 struct bond_3ad_stats *stats; 759 760 if (slave) 761 stats = &SLAVE_AD_INFO(slave)->stats; 762 else 763 stats = &BOND_AD_INFO(bond).stats; 764 765 nest2 = nla_nest_start_noflag(skb, BOND_XSTATS_3AD); 766 if (!nest2) { 767 nla_nest_end(skb, nest); 768 return -EMSGSIZE; 769 } 770 771 if (bond_3ad_stats_fill(skb, stats)) { 772 nla_nest_cancel(skb, nest2); 773 nla_nest_end(skb, nest); 774 return -EMSGSIZE; 775 } 776 nla_nest_end(skb, nest2); 777 } 778 nla_nest_end(skb, nest); 779 780 return 0; 781 } 782 783 struct rtnl_link_ops bond_link_ops __read_mostly = { 784 .kind = "bond", 785 .priv_size = sizeof(struct bonding), 786 .setup = bond_setup, 787 .maxtype = IFLA_BOND_MAX, 788 .policy = bond_policy, 789 .validate = bond_validate, 790 .newlink = bond_newlink, 791 .changelink = bond_changelink, 792 .get_size = bond_get_size, 793 .fill_info = bond_fill_info, 794 .get_num_tx_queues = bond_get_num_tx_queues, 795 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number 796 as for TX queues */ 797 .fill_linkxstats = bond_fill_linkxstats, 798 .get_linkxstats_size = bond_get_linkxstats_size, 799 .slave_maxtype = IFLA_BOND_SLAVE_MAX, 800 .slave_policy = bond_slave_policy, 801 .slave_changelink = bond_slave_changelink, 802 .get_slave_size = bond_get_slave_size, 803 .fill_slave_info = bond_fill_slave_info, 804 }; 805 806 int __init bond_netlink_init(void) 807 { 808 return rtnl_link_register(&bond_link_ops); 809 } 810 811 void bond_netlink_fini(void) 812 { 813 rtnl_link_unregister(&bond_link_ops); 814 } 815 816 MODULE_ALIAS_RTNL_LINK("bond"); 817