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