drivers/net/bonding/bond_netlink.c

   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 {
 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 {
 136         struct bonding *bond = netdev_priv(bond_dev);
 137         struct bond_opt_value newval;
 138         int err;
 139
 140         if (!data)
 141                 return 0;
 142
 143         if (data[IFLA_BOND_SLAVE_QUEUE_ID]) {
 144                 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]);
 145                 char queue_id_str[IFNAMSIZ + 7];
 146
 147                 /* queue_id option setting expects slave_name:queue_id */
 148                 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n",
 149                          slave_dev->name, queue_id);
 150                 bond_opt_initstr(&newval, queue_id_str);
 151                 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval);
 152                 if (err)
 153                         return err;
 154         }
 155
 156         return 0;
 157 }
 158
 159 static int bond_changelink(struct net_device *bond_dev,
 160                            struct nlattr *tb[], struct nlattr *data[])
 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_USE_CARRIER]) {
 220                 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
 221
 222                 bond_opt_initval(&newval, use_carrier);
 223                 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval);
 224                 if (err)
 225                         return err;
 226         }
 227         if (data[IFLA_BOND_ARP_INTERVAL]) {
 228                 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
 229
 230                 if (arp_interval && miimon) {
 231                         netdev_err(bond->dev, "ARP monitoring cannot be used with MII monitoring\n");
 232                         return -EINVAL;
 233                 }
 234
 235                 bond_opt_initval(&newval, arp_interval);
 236                 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
 237                 if (err)
 238                         return err;
 239         }
 240         if (data[IFLA_BOND_ARP_IP_TARGET]) {
 241                 struct nlattr *attr;
 242                 int i = 0, rem;
 243
 244                 bond_option_arp_ip_targets_clear(bond);
 245                 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
 246                         __be32 target;
 247
 248                         if (nla_len(attr) < sizeof(target))
 249                                 return -EINVAL;
 250
 251                         target = nla_get_be32(attr);
 252
 253                         bond_opt_initval(&newval, (__force u64)target);
 254                         err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
 255                                              &newval);
 256                         if (err)
 257                                 break;
 258                         i++;
 259                 }
 260                 if (i == 0 && bond->params.arp_interval)
 261                         netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
 262                 if (err)
 263                         return err;
 264         }
 265         if (data[IFLA_BOND_ARP_VALIDATE]) {
 266                 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
 267
 268                 if (arp_validate && miimon) {
 269                         netdev_err(bond->dev, "ARP validating cannot be used with MII monitoring\n");
 270                         return -EINVAL;
 271                 }
 272
 273                 bond_opt_initval(&newval, arp_validate);
 274                 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval);
 275                 if (err)
 276                         return err;
 277         }
 278         if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
 279                 int arp_all_targets =
 280                         nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
 281
 282                 bond_opt_initval(&newval, arp_all_targets);
 283                 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval);
 284                 if (err)
 285                         return err;
 286         }
 287         if (data[IFLA_BOND_PRIMARY]) {
 288                 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
 289                 struct net_device *dev;
 290                 char *primary = "";
 291
 292                 dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
 293                 if (dev)
 294                         primary = dev->name;
 295
 296                 bond_opt_initstr(&newval, primary);
 297                 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval);
 298                 if (err)
 299                         return err;
 300         }
 301         if (data[IFLA_BOND_PRIMARY_RESELECT]) {
 302                 int primary_reselect =
 303                         nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
 304
 305                 bond_opt_initval(&newval, primary_reselect);
 306                 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval);
 307                 if (err)
 308                         return err;
 309         }
 310         if (data[IFLA_BOND_FAIL_OVER_MAC]) {
 311                 int fail_over_mac =
 312                         nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
 313
 314                 bond_opt_initval(&newval, fail_over_mac);
 315                 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval);
 316                 if (err)
 317                         return err;
 318         }
 319         if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
 320                 int xmit_hash_policy =
 321                         nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
 322
 323                 bond_opt_initval(&newval, xmit_hash_policy);
 324                 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval);
 325                 if (err)
 326                         return err;
 327         }
 328         if (data[IFLA_BOND_RESEND_IGMP]) {
 329                 int resend_igmp =
 330                         nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
 331
 332                 bond_opt_initval(&newval, resend_igmp);
 333                 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval);
 334                 if (err)
 335                         return err;
 336         }
 337         if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
 338                 int num_peer_notif =
 339                         nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
 340
 341                 bond_opt_initval(&newval, num_peer_notif);
 342                 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval);
 343                 if (err)
 344                         return err;
 345         }
 346         if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
 347                 int all_slaves_active =
 348                         nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
 349
 350                 bond_opt_initval(&newval, all_slaves_active);
 351                 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval);
 352                 if (err)
 353                         return err;
 354         }
 355         if (data[IFLA_BOND_MIN_LINKS]) {
 356                 int min_links =
 357                         nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
 358
 359                 bond_opt_initval(&newval, min_links);
 360                 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval);
 361                 if (err)
 362                         return err;
 363         }
 364         if (data[IFLA_BOND_LP_INTERVAL]) {
 365                 int lp_interval =
 366                         nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
 367
 368                 bond_opt_initval(&newval, lp_interval);
 369                 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval);
 370                 if (err)
 371                         return err;
 372         }
 373         if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
 374                 int packets_per_slave =
 375                         nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
 376
 377                 bond_opt_initval(&newval, packets_per_slave);
 378                 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
 379                 if (err)
 380                         return err;
 381         }
 382         if (data[IFLA_BOND_AD_LACP_RATE]) {
 383                 int lacp_rate =
 384                         nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
 385
 386                 bond_opt_initval(&newval, lacp_rate);
 387                 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval);
 388                 if (err)
 389                         return err;
 390         }
 391         if (data[IFLA_BOND_AD_SELECT]) {
 392                 int ad_select =
 393                         nla_get_u8(data[IFLA_BOND_AD_SELECT]);
 394
 395                 bond_opt_initval(&newval, ad_select);
 396                 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval);
 397                 if (err)
 398                         return err;
 399         }
 400         if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) {
 401                 int actor_sys_prio =
 402                         nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]);
 403
 404                 bond_opt_initval(&newval, actor_sys_prio);
 405                 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval);
 406                 if (err)
 407                         return err;
 408         }
 409         if (data[IFLA_BOND_AD_USER_PORT_KEY]) {
 410                 int port_key =
 411                         nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]);
 412
 413                 bond_opt_initval(&newval, port_key);
 414                 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval);
 415                 if (err)
 416                         return err;
 417         }
 418         if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) {
 419                 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN)
 420                         return -EINVAL;
 421
 422                 bond_opt_initval(&newval,
 423                                  nla_get_be64(data[IFLA_BOND_AD_ACTOR_SYSTEM]));
 424                 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval);
 425                 if (err)
 426                         return err;
 427         }
 428         if (data[IFLA_BOND_TLB_DYNAMIC_LB]) {
 429                 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]);
 430
 431                 bond_opt_initval(&newval, dynamic_lb);
 432                 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval);
 433                 if (err)
 434                         return err;
 435         }
 436
 437         return 0;
 438 }
 439
 440 static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
 441                         struct nlattr *tb[], struct nlattr *data[])
 442 {
 443         int err;
 444
 445         err = bond_changelink(bond_dev, tb, data);
 446         if (err < 0)
 447                 return err;
 448
 449         return register_netdevice(bond_dev);
 450 }
 451
 452 static size_t bond_get_size(const struct net_device *bond_dev)
 453 {
 454         return nla_total_size(sizeof(u8)) +     /* IFLA_BOND_MODE */
 455                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ACTIVE_SLAVE */
 456                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_MIIMON */
 457                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_UPDELAY */
 458                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_DOWNDELAY */
 459                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_USE_CARRIER */
 460                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_INTERVAL */
 461                                                 /* IFLA_BOND_ARP_IP_TARGET */
 462                 nla_total_size(sizeof(struct nlattr)) +
 463                 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
 464                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_VALIDATE */
 465                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_ALL_TARGETS */
 466                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_PRIMARY */
 467                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_PRIMARY_RESELECT */
 468                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_FAIL_OVER_MAC */
 469                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_XMIT_HASH_POLICY */
 470                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_RESEND_IGMP */
 471                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_NUM_PEER_NOTIF */
 472                 nla_total_size(sizeof(u8)) +   /* IFLA_BOND_ALL_SLAVES_ACTIVE */
 473                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_MIN_LINKS */
 474                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_LP_INTERVAL */
 475                 nla_total_size(sizeof(u32)) +  /* IFLA_BOND_PACKETS_PER_SLAVE */
 476                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_AD_LACP_RATE */
 477                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_AD_SELECT */
 478                 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
 479                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
 480                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
 481                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
 482                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
 483                 nla_total_size(ETH_ALEN) +    /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
 484                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */
 485                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */
 486                 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */
 487                 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */
 488                 0;
 489 }
 490
 491 static int bond_option_active_slave_get_ifindex(struct bonding *bond)
 492 {
 493         const struct net_device *slave;
 494         int ifindex;
 495
 496         rcu_read_lock();
 497         slave = bond_option_active_slave_get_rcu(bond);
 498         ifindex = slave ? slave->ifindex : 0;
 499         rcu_read_unlock();
 500         return ifindex;
 501 }
 502
 503 static int bond_fill_info(struct sk_buff *skb,
 504                           const struct net_device *bond_dev)
 505 {
 506         struct bonding *bond = netdev_priv(bond_dev);
 507         unsigned int packets_per_slave;
 508         int ifindex, i, targets_added;
 509         struct nlattr *targets;
 510         struct slave *primary;
 511
 512         if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
 513                 goto nla_put_failure;
 514
 515         ifindex = bond_option_active_slave_get_ifindex(bond);
 516         if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))
 517                 goto nla_put_failure;
 518
 519         if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
 520                 goto nla_put_failure;
 521
 522         if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
 523                         bond->params.updelay * bond->params.miimon))
 524                 goto nla_put_failure;
 525
 526         if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
 527                         bond->params.downdelay * bond->params.miimon))
 528                 goto nla_put_failure;
 529
 530         if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
 531                 goto nla_put_failure;
 532
 533         if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
 534                 goto nla_put_failure;
 535
 536         targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
 537         if (!targets)
 538                 goto nla_put_failure;
 539
 540         targets_added = 0;
 541         for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
 542                 if (bond->params.arp_targets[i]) {
 543                         nla_put_be32(skb, i, bond->params.arp_targets[i]);
 544                         targets_added = 1;
 545                 }
 546         }
 547
 548         if (targets_added)
 549                 nla_nest_end(skb, targets);
 550         else
 551                 nla_nest_cancel(skb, targets);
 552
 553         if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
 554                 goto nla_put_failure;
 555
 556         if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
 557                         bond->params.arp_all_targets))
 558                 goto nla_put_failure;
 559
 560         primary = rtnl_dereference(bond->primary_slave);
 561         if (primary &&
 562             nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex))
 563                 goto nla_put_failure;
 564
 565         if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
 566                        bond->params.primary_reselect))
 567                 goto nla_put_failure;
 568
 569         if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
 570                        bond->params.fail_over_mac))
 571                 goto nla_put_failure;
 572
 573         if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
 574                        bond->params.xmit_policy))
 575                 goto nla_put_failure;
 576
 577         if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
 578                         bond->params.resend_igmp))
 579                 goto nla_put_failure;
 580
 581         if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
 582                        bond->params.num_peer_notif))
 583                 goto nla_put_failure;
 584
 585         if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
 586                        bond->params.all_slaves_active))
 587                 goto nla_put_failure;
 588
 589         if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
 590                         bond->params.min_links))
 591                 goto nla_put_failure;
 592
 593         if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
 594                         bond->params.lp_interval))
 595                 goto nla_put_failure;
 596
 597         packets_per_slave = bond->params.packets_per_slave;
 598         if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
 599                         packets_per_slave))
 600                 goto nla_put_failure;
 601
 602         if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
 603                        bond->params.lacp_fast))
 604                 goto nla_put_failure;
 605
 606         if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
 607                        bond->params.ad_select))
 608                 goto nla_put_failure;
 609
 610         if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB,
 611                        bond->params.tlb_dynamic_lb))
 612                 goto nla_put_failure;
 613
 614         if (BOND_MODE(bond) == BOND_MODE_8023AD) {
 615                 struct ad_info info;
 616
 617                 if (capable(CAP_NET_ADMIN)) {
 618                         if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO,
 619                                         bond->params.ad_actor_sys_prio))
 620                                 goto nla_put_failure;
 621
 622                         if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY,
 623                                         bond->params.ad_user_port_key))
 624                                 goto nla_put_failure;
 625
 626                         if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM,
 627                                     sizeof(bond->params.ad_actor_system),
 628                                     &bond->params.ad_actor_system))
 629                                 goto nla_put_failure;
 630                 }
 631                 if (!bond_3ad_get_active_agg_info(bond, &info)) {
 632                         struct nlattr *nest;
 633
 634                         nest = nla_nest_start(skb, IFLA_BOND_AD_INFO);
 635                         if (!nest)
 636                                 goto nla_put_failure;
 637
 638                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
 639                                         info.aggregator_id))
 640                                 goto nla_put_failure;
 641                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
 642                                         info.ports))
 643                                 goto nla_put_failure;
 644                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
 645                                         info.actor_key))
 646                                 goto nla_put_failure;
 647                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
 648                                         info.partner_key))
 649                                 goto nla_put_failure;
 650                         if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
 651                                     sizeof(info.partner_system),
 652                                     &info.partner_system))
 653                                 goto nla_put_failure;
 654
 655                         nla_nest_end(skb, nest);
 656                 }
 657         }
 658
 659         return 0;
 660
 661 nla_put_failure:
 662         return -EMSGSIZE;
 663 }
 664
 665 struct rtnl_link_ops bond_link_ops __read_mostly = {
 666         .kind                   = "bond",
 667         .priv_size              = sizeof(struct bonding),
 668         .setup                  = bond_setup,
 669         .maxtype                = IFLA_BOND_MAX,
 670         .policy                 = bond_policy,
 671         .validate               = bond_validate,
 672         .newlink                = bond_newlink,
 673         .changelink             = bond_changelink,
 674         .get_size               = bond_get_size,
 675         .fill_info              = bond_fill_info,
 676         .get_num_tx_queues      = bond_get_num_tx_queues,
 677         .get_num_rx_queues      = bond_get_num_tx_queues, /* Use the same number
 678                                                              as for TX queues */
 679         .slave_maxtype          = IFLA_BOND_SLAVE_MAX,
 680         .slave_policy           = bond_slave_policy,
 681         .slave_changelink       = bond_slave_changelink,
 682         .get_slave_size         = bond_get_slave_size,
 683         .fill_slave_info        = bond_fill_slave_info,
 684 };
 685
 686 int __init bond_netlink_init(void)
 687 {
 688         return rtnl_link_register(&bond_link_ops);
 689 }
 690
 691 void bond_netlink_fini(void)
 692 {
 693         rtnl_link_unregister(&bond_link_ops);
 694 }
 695
 696 MODULE_ALIAS_RTNL_LINK("bond");