1 /* 2 * drivers/net/bond/bond_netlink.c - Netlink interface for bonding 3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us> 4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 */ 11 12 #include <linux/module.h> 13 #include <linux/errno.h> 14 #include <linux/netdevice.h> 15 #include <linux/etherdevice.h> 16 #include <linux/if_link.h> 17 #include <linux/if_ether.h> 18 #include <net/netlink.h> 19 #include <net/rtnetlink.h> 20 #include <net/bonding.h> 21 22 static size_t bond_get_slave_size(const struct net_device *bond_dev, 23 const struct net_device *slave_dev) 24 { 25 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_STATE */ 26 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_MII_STATUS */ 27 nla_total_size(sizeof(u32)) + /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */ 28 nla_total_size(MAX_ADDR_LEN) + /* IFLA_BOND_SLAVE_PERM_HWADDR */ 29 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_QUEUE_ID */ 30 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */ 31 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE */ 32 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE */ 33 0; 34 } 35 36 static int bond_fill_slave_info(struct sk_buff *skb, 37 const struct net_device *bond_dev, 38 const struct net_device *slave_dev) 39 { 40 struct slave *slave = bond_slave_get_rtnl(slave_dev); 41 42 if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave))) 43 goto nla_put_failure; 44 45 if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link)) 46 goto nla_put_failure; 47 48 if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT, 49 slave->link_failure_count)) 50 goto nla_put_failure; 51 52 if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR, 53 slave_dev->addr_len, slave->perm_hwaddr)) 54 goto nla_put_failure; 55 56 if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id)) 57 goto nla_put_failure; 58 59 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) { 60 const struct aggregator *agg; 61 const struct port *ad_port; 62 63 ad_port = &SLAVE_AD_INFO(slave)->port; 64 agg = SLAVE_AD_INFO(slave)->port.aggregator; 65 if (agg) { 66 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID, 67 agg->aggregator_identifier)) 68 goto nla_put_failure; 69 if (nla_put_u8(skb, 70 IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE, 71 ad_port->actor_oper_port_state)) 72 goto nla_put_failure; 73 if (nla_put_u16(skb, 74 IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE, 75 ad_port->partner_oper.port_state)) 76 goto nla_put_failure; 77 } 78 } 79 80 return 0; 81 82 nla_put_failure: 83 return -EMSGSIZE; 84 } 85 86 static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { 87 [IFLA_BOND_MODE] = { .type = NLA_U8 }, 88 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 }, 89 [IFLA_BOND_MIIMON] = { .type = NLA_U32 }, 90 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 }, 91 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 }, 92 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 }, 93 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 }, 94 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED }, 95 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 }, 96 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 }, 97 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 }, 98 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 }, 99 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 }, 100 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 }, 101 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 }, 102 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 }, 103 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 }, 104 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 }, 105 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 }, 106 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 }, 107 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 }, 108 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 }, 109 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED }, 110 [IFLA_BOND_AD_ACTOR_SYS_PRIO] = { .type = NLA_U16 }, 111 [IFLA_BOND_AD_USER_PORT_KEY] = { .type = NLA_U16 }, 112 [IFLA_BOND_AD_ACTOR_SYSTEM] = { .type = NLA_BINARY, 113 .len = ETH_ALEN }, 114 [IFLA_BOND_TLB_DYNAMIC_LB] = { .type = NLA_U8 }, 115 }; 116 117 static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = { 118 [IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 }, 119 }; 120 121 static int bond_validate(struct nlattr *tb[], struct nlattr *data[], 122 struct netlink_ext_ack *extack) 123 { 124 if (tb[IFLA_ADDRESS]) { 125 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 126 return -EINVAL; 127 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 128 return -EADDRNOTAVAIL; 129 } 130 return 0; 131 } 132 133 static int bond_slave_changelink(struct net_device *bond_dev, 134 struct net_device *slave_dev, 135 struct nlattr *tb[], struct nlattr *data[], 136 struct netlink_ext_ack *extack) 137 { 138 struct bonding *bond = netdev_priv(bond_dev); 139 struct bond_opt_value newval; 140 int err; 141 142 if (!data) 143 return 0; 144 145 if (data[IFLA_BOND_SLAVE_QUEUE_ID]) { 146 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]); 147 char queue_id_str[IFNAMSIZ + 7]; 148 149 /* queue_id option setting expects slave_name:queue_id */ 150 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n", 151 slave_dev->name, queue_id); 152 bond_opt_initstr(&newval, queue_id_str); 153 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval); 154 if (err) 155 return err; 156 } 157 158 return 0; 159 } 160 161 static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[], 162 struct nlattr *data[], 163 struct netlink_ext_ack *extack) 164 { 165 struct bonding *bond = netdev_priv(bond_dev); 166 struct bond_opt_value newval; 167 int miimon = 0; 168 int err; 169 170 if (!data) 171 return 0; 172 173 if (data[IFLA_BOND_MODE]) { 174 int mode = nla_get_u8(data[IFLA_BOND_MODE]); 175 176 bond_opt_initval(&newval, mode); 177 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval); 178 if (err) 179 return err; 180 } 181 if (data[IFLA_BOND_ACTIVE_SLAVE]) { 182 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]); 183 struct net_device *slave_dev; 184 char *active_slave = ""; 185 186 if (ifindex != 0) { 187 slave_dev = __dev_get_by_index(dev_net(bond_dev), 188 ifindex); 189 if (!slave_dev) 190 return -ENODEV; 191 active_slave = slave_dev->name; 192 } 193 bond_opt_initstr(&newval, active_slave); 194 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval); 195 if (err) 196 return err; 197 } 198 if (data[IFLA_BOND_MIIMON]) { 199 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]); 200 201 bond_opt_initval(&newval, miimon); 202 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval); 203 if (err) 204 return err; 205 } 206 if (data[IFLA_BOND_UPDELAY]) { 207 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]); 208 209 bond_opt_initval(&newval, updelay); 210 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval); 211 if (err) 212 return err; 213 } 214 if (data[IFLA_BOND_DOWNDELAY]) { 215 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]); 216 217 bond_opt_initval(&newval, downdelay); 218 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval); 219 if (err) 220 return err; 221 } 222 if (data[IFLA_BOND_USE_CARRIER]) { 223 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]); 224 225 bond_opt_initval(&newval, use_carrier); 226 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval); 227 if (err) 228 return err; 229 } 230 if (data[IFLA_BOND_ARP_INTERVAL]) { 231 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]); 232 233 if (arp_interval && miimon) { 234 netdev_err(bond->dev, "ARP monitoring cannot be used with MII monitoring\n"); 235 return -EINVAL; 236 } 237 238 bond_opt_initval(&newval, arp_interval); 239 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval); 240 if (err) 241 return err; 242 } 243 if (data[IFLA_BOND_ARP_IP_TARGET]) { 244 struct nlattr *attr; 245 int i = 0, rem; 246 247 bond_option_arp_ip_targets_clear(bond); 248 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) { 249 __be32 target; 250 251 if (nla_len(attr) < sizeof(target)) 252 return -EINVAL; 253 254 target = nla_get_be32(attr); 255 256 bond_opt_initval(&newval, (__force u64)target); 257 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS, 258 &newval); 259 if (err) 260 break; 261 i++; 262 } 263 if (i == 0 && bond->params.arp_interval) 264 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 265 if (err) 266 return err; 267 } 268 if (data[IFLA_BOND_ARP_VALIDATE]) { 269 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]); 270 271 if (arp_validate && miimon) { 272 netdev_err(bond->dev, "ARP validating cannot be used with MII monitoring\n"); 273 return -EINVAL; 274 } 275 276 bond_opt_initval(&newval, arp_validate); 277 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval); 278 if (err) 279 return err; 280 } 281 if (data[IFLA_BOND_ARP_ALL_TARGETS]) { 282 int arp_all_targets = 283 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]); 284 285 bond_opt_initval(&newval, arp_all_targets); 286 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval); 287 if (err) 288 return err; 289 } 290 if (data[IFLA_BOND_PRIMARY]) { 291 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]); 292 struct net_device *dev; 293 char *primary = ""; 294 295 dev = __dev_get_by_index(dev_net(bond_dev), ifindex); 296 if (dev) 297 primary = dev->name; 298 299 bond_opt_initstr(&newval, primary); 300 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval); 301 if (err) 302 return err; 303 } 304 if (data[IFLA_BOND_PRIMARY_RESELECT]) { 305 int primary_reselect = 306 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]); 307 308 bond_opt_initval(&newval, primary_reselect); 309 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval); 310 if (err) 311 return err; 312 } 313 if (data[IFLA_BOND_FAIL_OVER_MAC]) { 314 int fail_over_mac = 315 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]); 316 317 bond_opt_initval(&newval, fail_over_mac); 318 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval); 319 if (err) 320 return err; 321 } 322 if (data[IFLA_BOND_XMIT_HASH_POLICY]) { 323 int xmit_hash_policy = 324 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]); 325 326 bond_opt_initval(&newval, xmit_hash_policy); 327 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval); 328 if (err) 329 return err; 330 } 331 if (data[IFLA_BOND_RESEND_IGMP]) { 332 int resend_igmp = 333 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]); 334 335 bond_opt_initval(&newval, resend_igmp); 336 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval); 337 if (err) 338 return err; 339 } 340 if (data[IFLA_BOND_NUM_PEER_NOTIF]) { 341 int num_peer_notif = 342 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]); 343 344 bond_opt_initval(&newval, num_peer_notif); 345 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval); 346 if (err) 347 return err; 348 } 349 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) { 350 int all_slaves_active = 351 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]); 352 353 bond_opt_initval(&newval, all_slaves_active); 354 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval); 355 if (err) 356 return err; 357 } 358 if (data[IFLA_BOND_MIN_LINKS]) { 359 int min_links = 360 nla_get_u32(data[IFLA_BOND_MIN_LINKS]); 361 362 bond_opt_initval(&newval, min_links); 363 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval); 364 if (err) 365 return err; 366 } 367 if (data[IFLA_BOND_LP_INTERVAL]) { 368 int lp_interval = 369 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]); 370 371 bond_opt_initval(&newval, lp_interval); 372 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval); 373 if (err) 374 return err; 375 } 376 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) { 377 int packets_per_slave = 378 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]); 379 380 bond_opt_initval(&newval, packets_per_slave); 381 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval); 382 if (err) 383 return err; 384 } 385 if (data[IFLA_BOND_AD_LACP_RATE]) { 386 int lacp_rate = 387 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]); 388 389 bond_opt_initval(&newval, lacp_rate); 390 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval); 391 if (err) 392 return err; 393 } 394 if (data[IFLA_BOND_AD_SELECT]) { 395 int ad_select = 396 nla_get_u8(data[IFLA_BOND_AD_SELECT]); 397 398 bond_opt_initval(&newval, ad_select); 399 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval); 400 if (err) 401 return err; 402 } 403 if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) { 404 int actor_sys_prio = 405 nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]); 406 407 bond_opt_initval(&newval, actor_sys_prio); 408 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval); 409 if (err) 410 return err; 411 } 412 if (data[IFLA_BOND_AD_USER_PORT_KEY]) { 413 int port_key = 414 nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]); 415 416 bond_opt_initval(&newval, port_key); 417 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval); 418 if (err) 419 return err; 420 } 421 if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) { 422 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN) 423 return -EINVAL; 424 425 bond_opt_initval(&newval, 426 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM])); 427 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval); 428 if (err) 429 return err; 430 } 431 if (data[IFLA_BOND_TLB_DYNAMIC_LB]) { 432 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]); 433 434 bond_opt_initval(&newval, dynamic_lb); 435 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval); 436 if (err) 437 return err; 438 } 439 440 return 0; 441 } 442 443 static int bond_newlink(struct net *src_net, struct net_device *bond_dev, 444 struct nlattr *tb[], struct nlattr *data[], 445 struct netlink_ext_ack *extack) 446 { 447 int err; 448 449 err = bond_changelink(bond_dev, tb, data, extack); 450 if (err < 0) 451 return err; 452 453 err = register_netdevice(bond_dev); 454 455 netif_carrier_off(bond_dev); 456 if (!err) { 457 struct bonding *bond = netdev_priv(bond_dev); 458 459 bond_work_init_all(bond); 460 } 461 462 return err; 463 } 464 465 static size_t bond_get_size(const struct net_device *bond_dev) 466 { 467 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */ 468 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */ 469 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */ 470 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */ 471 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */ 472 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */ 473 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */ 474 /* IFLA_BOND_ARP_IP_TARGET */ 475 nla_total_size(sizeof(struct nlattr)) + 476 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS + 477 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */ 478 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */ 479 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */ 480 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */ 481 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */ 482 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */ 483 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */ 484 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */ 485 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */ 486 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */ 487 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */ 488 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */ 489 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */ 490 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */ 491 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */ 492 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */ 493 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */ 494 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */ 495 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/ 496 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/ 497 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */ 498 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */ 499 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */ 500 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */ 501 0; 502 } 503 504 static int bond_option_active_slave_get_ifindex(struct bonding *bond) 505 { 506 const struct net_device *slave; 507 int ifindex; 508 509 rcu_read_lock(); 510 slave = bond_option_active_slave_get_rcu(bond); 511 ifindex = slave ? slave->ifindex : 0; 512 rcu_read_unlock(); 513 return ifindex; 514 } 515 516 static int bond_fill_info(struct sk_buff *skb, 517 const struct net_device *bond_dev) 518 { 519 struct bonding *bond = netdev_priv(bond_dev); 520 unsigned int packets_per_slave; 521 int ifindex, i, targets_added; 522 struct nlattr *targets; 523 struct slave *primary; 524 525 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond))) 526 goto nla_put_failure; 527 528 ifindex = bond_option_active_slave_get_ifindex(bond); 529 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex)) 530 goto nla_put_failure; 531 532 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon)) 533 goto nla_put_failure; 534 535 if (nla_put_u32(skb, IFLA_BOND_UPDELAY, 536 bond->params.updelay * bond->params.miimon)) 537 goto nla_put_failure; 538 539 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY, 540 bond->params.downdelay * bond->params.miimon)) 541 goto nla_put_failure; 542 543 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier)) 544 goto nla_put_failure; 545 546 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval)) 547 goto nla_put_failure; 548 549 targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET); 550 if (!targets) 551 goto nla_put_failure; 552 553 targets_added = 0; 554 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { 555 if (bond->params.arp_targets[i]) { 556 if (nla_put_be32(skb, i, bond->params.arp_targets[i])) 557 goto nla_put_failure; 558 targets_added = 1; 559 } 560 } 561 562 if (targets_added) 563 nla_nest_end(skb, targets); 564 else 565 nla_nest_cancel(skb, targets); 566 567 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate)) 568 goto nla_put_failure; 569 570 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS, 571 bond->params.arp_all_targets)) 572 goto nla_put_failure; 573 574 primary = rtnl_dereference(bond->primary_slave); 575 if (primary && 576 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex)) 577 goto nla_put_failure; 578 579 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT, 580 bond->params.primary_reselect)) 581 goto nla_put_failure; 582 583 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC, 584 bond->params.fail_over_mac)) 585 goto nla_put_failure; 586 587 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY, 588 bond->params.xmit_policy)) 589 goto nla_put_failure; 590 591 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP, 592 bond->params.resend_igmp)) 593 goto nla_put_failure; 594 595 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF, 596 bond->params.num_peer_notif)) 597 goto nla_put_failure; 598 599 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE, 600 bond->params.all_slaves_active)) 601 goto nla_put_failure; 602 603 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS, 604 bond->params.min_links)) 605 goto nla_put_failure; 606 607 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL, 608 bond->params.lp_interval)) 609 goto nla_put_failure; 610 611 packets_per_slave = bond->params.packets_per_slave; 612 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE, 613 packets_per_slave)) 614 goto nla_put_failure; 615 616 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE, 617 bond->params.lacp_fast)) 618 goto nla_put_failure; 619 620 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT, 621 bond->params.ad_select)) 622 goto nla_put_failure; 623 624 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB, 625 bond->params.tlb_dynamic_lb)) 626 goto nla_put_failure; 627 628 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 629 struct ad_info info; 630 631 if (capable(CAP_NET_ADMIN)) { 632 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO, 633 bond->params.ad_actor_sys_prio)) 634 goto nla_put_failure; 635 636 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY, 637 bond->params.ad_user_port_key)) 638 goto nla_put_failure; 639 640 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM, 641 ETH_ALEN, &bond->params.ad_actor_system)) 642 goto nla_put_failure; 643 } 644 if (!bond_3ad_get_active_agg_info(bond, &info)) { 645 struct nlattr *nest; 646 647 nest = nla_nest_start(skb, IFLA_BOND_AD_INFO); 648 if (!nest) 649 goto nla_put_failure; 650 651 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR, 652 info.aggregator_id)) 653 goto nla_put_failure; 654 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS, 655 info.ports)) 656 goto nla_put_failure; 657 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY, 658 info.actor_key)) 659 goto nla_put_failure; 660 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY, 661 info.partner_key)) 662 goto nla_put_failure; 663 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC, 664 sizeof(info.partner_system), 665 &info.partner_system)) 666 goto nla_put_failure; 667 668 nla_nest_end(skb, nest); 669 } 670 } 671 672 return 0; 673 674 nla_put_failure: 675 return -EMSGSIZE; 676 } 677 678 static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr) 679 { 680 switch (attr) { 681 case IFLA_STATS_LINK_XSTATS: 682 case IFLA_STATS_LINK_XSTATS_SLAVE: 683 break; 684 default: 685 return 0; 686 } 687 688 return bond_3ad_stats_size() + nla_total_size(0); 689 } 690 691 static int bond_fill_linkxstats(struct sk_buff *skb, 692 const struct net_device *dev, 693 int *prividx, int attr) 694 { 695 struct nlattr *nla __maybe_unused; 696 struct slave *slave = NULL; 697 struct nlattr *nest, *nest2; 698 struct bonding *bond; 699 700 switch (attr) { 701 case IFLA_STATS_LINK_XSTATS: 702 bond = netdev_priv(dev); 703 break; 704 case IFLA_STATS_LINK_XSTATS_SLAVE: 705 slave = bond_slave_get_rtnl(dev); 706 if (!slave) 707 return 0; 708 bond = slave->bond; 709 break; 710 default: 711 return -EINVAL; 712 } 713 714 nest = nla_nest_start(skb, LINK_XSTATS_TYPE_BOND); 715 if (!nest) 716 return -EMSGSIZE; 717 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 718 struct bond_3ad_stats *stats; 719 720 if (slave) 721 stats = &SLAVE_AD_INFO(slave)->stats; 722 else 723 stats = &BOND_AD_INFO(bond).stats; 724 725 nest2 = nla_nest_start(skb, BOND_XSTATS_3AD); 726 if (!nest2) { 727 nla_nest_end(skb, nest); 728 return -EMSGSIZE; 729 } 730 731 if (bond_3ad_stats_fill(skb, stats)) { 732 nla_nest_cancel(skb, nest2); 733 nla_nest_end(skb, nest); 734 return -EMSGSIZE; 735 } 736 nla_nest_end(skb, nest2); 737 } 738 nla_nest_end(skb, nest); 739 740 return 0; 741 } 742 743 struct rtnl_link_ops bond_link_ops __read_mostly = { 744 .kind = "bond", 745 .priv_size = sizeof(struct bonding), 746 .setup = bond_setup, 747 .maxtype = IFLA_BOND_MAX, 748 .policy = bond_policy, 749 .validate = bond_validate, 750 .newlink = bond_newlink, 751 .changelink = bond_changelink, 752 .get_size = bond_get_size, 753 .fill_info = bond_fill_info, 754 .get_num_tx_queues = bond_get_num_tx_queues, 755 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number 756 as for TX queues */ 757 .fill_linkxstats = bond_fill_linkxstats, 758 .get_linkxstats_size = bond_get_linkxstats_size, 759 .slave_maxtype = IFLA_BOND_SLAVE_MAX, 760 .slave_policy = bond_slave_policy, 761 .slave_changelink = bond_slave_changelink, 762 .get_slave_size = bond_get_slave_size, 763 .fill_slave_info = bond_fill_slave_info, 764 }; 765 766 int __init bond_netlink_init(void) 767 { 768 return rtnl_link_register(&bond_link_ops); 769 } 770 771 void bond_netlink_fini(void) 772 { 773 rtnl_link_unregister(&bond_link_ops); 774 } 775 776 MODULE_ALIAS_RTNL_LINK("bond"); 777