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