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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/errno.h>
  16 #include <linux/netdevice.h>
  17 #include <linux/etherdevice.h>
  18 #include <linux/if_link.h>
  19 #include <linux/if_ether.h>
  20 #include <net/netlink.h>
  21 #include <net/rtnetlink.h>
  22 #include "bonding.h"
  23
  24 int bond_get_slave(struct net_device *slave_dev, struct sk_buff *skb)
  25 {
  26         struct slave *slave = bond_slave_get_rtnl(slave_dev);
  27         const struct aggregator *agg;
  28
  29         if (nla_put_u8(skb, IFLA_SLAVE_STATE, bond_slave_state(slave)))
  30                 goto nla_put_failure;
  31
  32         if (nla_put_u8(skb, IFLA_SLAVE_MII_STATUS, slave->link))
  33                 goto nla_put_failure;
  34
  35         if (nla_put_u32(skb, IFLA_SLAVE_LINK_FAILURE_COUNT,
  36                         slave->link_failure_count))
  37                 goto nla_put_failure;
  38
  39         if (nla_put(skb, IFLA_SLAVE_PERM_HWADDR,
  40                     slave_dev->addr_len, slave->perm_hwaddr))
  41                 goto nla_put_failure;
  42
  43         if (nla_put_u16(skb, IFLA_SLAVE_QUEUE_ID, slave->queue_id))
  44                 goto nla_put_failure;
  45
  46         if (slave->bond->params.mode == BOND_MODE_8023AD) {
  47                 agg = SLAVE_AD_INFO(slave).port.aggregator;
  48                 if (agg)
  49                         if (nla_put_u16(skb, IFLA_SLAVE_AD_AGGREGATOR_ID,
  50                                         agg->aggregator_identifier))
  51                                 goto nla_put_failure;
  52         }
  53
  54         return 0;
  55
  56 nla_put_failure:
  57         return -EMSGSIZE;
  58 }
  59
  60 static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
  61         [IFLA_BOND_MODE]                = { .type = NLA_U8 },
  62         [IFLA_BOND_ACTIVE_SLAVE]        = { .type = NLA_U32 },
  63         [IFLA_BOND_MIIMON]              = { .type = NLA_U32 },
  64         [IFLA_BOND_UPDELAY]             = { .type = NLA_U32 },
  65         [IFLA_BOND_DOWNDELAY]           = { .type = NLA_U32 },
  66         [IFLA_BOND_USE_CARRIER]         = { .type = NLA_U8 },
  67         [IFLA_BOND_ARP_INTERVAL]        = { .type = NLA_U32 },
  68         [IFLA_BOND_ARP_IP_TARGET]       = { .type = NLA_NESTED },
  69         [IFLA_BOND_ARP_VALIDATE]        = { .type = NLA_U32 },
  70         [IFLA_BOND_ARP_ALL_TARGETS]     = { .type = NLA_U32 },
  71         [IFLA_BOND_PRIMARY]             = { .type = NLA_U32 },
  72         [IFLA_BOND_PRIMARY_RESELECT]    = { .type = NLA_U8 },
  73         [IFLA_BOND_FAIL_OVER_MAC]       = { .type = NLA_U8 },
  74         [IFLA_BOND_XMIT_HASH_POLICY]    = { .type = NLA_U8 },
  75         [IFLA_BOND_RESEND_IGMP]         = { .type = NLA_U32 },
  76         [IFLA_BOND_NUM_PEER_NOTIF]      = { .type = NLA_U8 },
  77         [IFLA_BOND_ALL_SLAVES_ACTIVE]   = { .type = NLA_U8 },
  78         [IFLA_BOND_MIN_LINKS]           = { .type = NLA_U32 },
  79         [IFLA_BOND_LP_INTERVAL]         = { .type = NLA_U32 },
  80         [IFLA_BOND_PACKETS_PER_SLAVE]   = { .type = NLA_U32 },
  81         [IFLA_BOND_AD_LACP_RATE]        = { .type = NLA_U8 },
  82         [IFLA_BOND_AD_SELECT]           = { .type = NLA_U8 },
  83         [IFLA_BOND_AD_INFO]             = { .type = NLA_NESTED },
  84 };
  85
  86 static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
  87 {
  88         if (tb[IFLA_ADDRESS]) {
  89                 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
  90                         return -EINVAL;
  91                 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
  92                         return -EADDRNOTAVAIL;
  93         }
  94         return 0;
  95 }
  96
  97 static int bond_changelink(struct net_device *bond_dev,
  98                            struct nlattr *tb[], struct nlattr *data[])
  99 {
 100         struct bonding *bond = netdev_priv(bond_dev);
 101         struct bond_opt_value newval;
 102         int miimon = 0;
 103         int err;
 104
 105         if (!data)
 106                 return 0;
 107
 108         if (data[IFLA_BOND_MODE]) {
 109                 int mode = nla_get_u8(data[IFLA_BOND_MODE]);
 110
 111                 bond_opt_initval(&newval, mode);
 112                 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval);
 113                 if (err)
 114                         return err;
 115         }
 116         if (data[IFLA_BOND_ACTIVE_SLAVE]) {
 117                 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
 118                 struct net_device *slave_dev;
 119
 120                 if (ifindex == 0) {
 121                         slave_dev = NULL;
 122                 } else {
 123                         slave_dev = __dev_get_by_index(dev_net(bond_dev),
 124                                                        ifindex);
 125                         if (!slave_dev)
 126                                 return -ENODEV;
 127                 }
 128                 err = bond_option_active_slave_set(bond, slave_dev);
 129                 if (err)
 130                         return err;
 131         }
 132         if (data[IFLA_BOND_MIIMON]) {
 133                 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
 134
 135                 bond_opt_initval(&newval, miimon);
 136                 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval);
 137                 if (err)
 138                         return err;
 139         }
 140         if (data[IFLA_BOND_UPDELAY]) {
 141                 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
 142
 143                 bond_opt_initval(&newval, updelay);
 144                 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval);
 145                 if (err)
 146                         return err;
 147         }
 148         if (data[IFLA_BOND_DOWNDELAY]) {
 149                 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
 150
 151                 bond_opt_initval(&newval, downdelay);
 152                 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
 153                 if (err)
 154                         return err;
 155         }
 156         if (data[IFLA_BOND_USE_CARRIER]) {
 157                 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
 158
 159                 err = bond_option_use_carrier_set(bond, use_carrier);
 160                 if (err)
 161                         return err;
 162         }
 163         if (data[IFLA_BOND_ARP_INTERVAL]) {
 164                 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
 165
 166                 if (arp_interval && miimon) {
 167                         pr_err("%s: ARP monitoring cannot be used with MII monitoring.\n",
 168                                bond->dev->name);
 169                         return -EINVAL;
 170                 }
 171
 172                 bond_opt_initval(&newval, arp_interval);
 173                 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
 174                 if (err)
 175                         return err;
 176         }
 177         if (data[IFLA_BOND_ARP_IP_TARGET]) {
 178                 struct nlattr *attr;
 179                 int i = 0, rem;
 180
 181                 bond_option_arp_ip_targets_clear(bond);
 182                 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
 183                         __be32 target = nla_get_be32(attr);
 184
 185                         bond_opt_initval(&newval, target);
 186                         err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
 187                                              &newval);
 188                         if (err)
 189                                 break;
 190                         i++;
 191                 }
 192                 if (i == 0 && bond->params.arp_interval)
 193                         pr_warn("%s: removing last arp target with arp_interval on\n",
 194                                 bond->dev->name);
 195                 if (err)
 196                         return err;
 197         }
 198         if (data[IFLA_BOND_ARP_VALIDATE]) {
 199                 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
 200
 201                 if (arp_validate && miimon) {
 202                         pr_err("%s: ARP validating cannot be used with MII monitoring.\n",
 203                                bond->dev->name);
 204                         return -EINVAL;
 205                 }
 206
 207                 bond_opt_initval(&newval, arp_validate);
 208                 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval);
 209                 if (err)
 210                         return err;
 211         }
 212         if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
 213                 int arp_all_targets =
 214                         nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
 215
 216                 bond_opt_initval(&newval, arp_all_targets);
 217                 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval);
 218                 if (err)
 219                         return err;
 220         }
 221         if (data[IFLA_BOND_PRIMARY]) {
 222                 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
 223                 struct net_device *dev;
 224                 char *primary = "";
 225
 226                 dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
 227                 if (dev)
 228                         primary = dev->name;
 229
 230                 bond_opt_initstr(&newval, primary);
 231                 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval);
 232                 if (err)
 233                         return err;
 234         }
 235         if (data[IFLA_BOND_PRIMARY_RESELECT]) {
 236                 int primary_reselect =
 237                         nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
 238
 239                 err = bond_option_primary_reselect_set(bond, primary_reselect);
 240                 if (err)
 241                         return err;
 242         }
 243         if (data[IFLA_BOND_FAIL_OVER_MAC]) {
 244                 int fail_over_mac =
 245                         nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
 246
 247                 bond_opt_initval(&newval, fail_over_mac);
 248                 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval);
 249                 if (err)
 250                         return err;
 251         }
 252         if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
 253                 int xmit_hash_policy =
 254                         nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
 255
 256                 bond_opt_initval(&newval, xmit_hash_policy);
 257                 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval);
 258                 if (err)
 259                         return err;
 260         }
 261         if (data[IFLA_BOND_RESEND_IGMP]) {
 262                 int resend_igmp =
 263                         nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
 264
 265                 err = bond_option_resend_igmp_set(bond, resend_igmp);
 266                 if (err)
 267                         return err;
 268         }
 269         if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
 270                 int num_peer_notif =
 271                         nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
 272
 273                 bond_opt_initval(&newval, num_peer_notif);
 274                 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval);
 275                 if (err)
 276                         return err;
 277         }
 278         if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
 279                 int all_slaves_active =
 280                         nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
 281
 282                 err = bond_option_all_slaves_active_set(bond,
 283                                                         all_slaves_active);
 284                 if (err)
 285                         return err;
 286         }
 287         if (data[IFLA_BOND_MIN_LINKS]) {
 288                 int min_links =
 289                         nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
 290
 291                 bond_opt_initval(&newval, min_links);
 292                 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval);
 293                 if (err)
 294                         return err;
 295         }
 296         if (data[IFLA_BOND_LP_INTERVAL]) {
 297                 int lp_interval =
 298                         nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
 299
 300                 err = bond_option_lp_interval_set(bond, lp_interval);
 301                 if (err)
 302                         return err;
 303         }
 304         if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
 305                 int packets_per_slave =
 306                         nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
 307
 308                 bond_opt_initval(&newval, packets_per_slave);
 309                 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
 310                 if (err)
 311                         return err;
 312         }
 313         if (data[IFLA_BOND_AD_LACP_RATE]) {
 314                 int lacp_rate =
 315                         nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
 316
 317                 bond_opt_initval(&newval, lacp_rate);
 318                 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval);
 319                 if (err)
 320                         return err;
 321         }
 322         if (data[IFLA_BOND_AD_SELECT]) {
 323                 int ad_select =
 324                         nla_get_u8(data[IFLA_BOND_AD_SELECT]);
 325
 326                 bond_opt_initval(&newval, ad_select);
 327                 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval);
 328                 if (err)
 329                         return err;
 330         }
 331         return 0;
 332 }
 333
 334 static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
 335                         struct nlattr *tb[], struct nlattr *data[])
 336 {
 337         int err;
 338
 339         err = bond_changelink(bond_dev, tb, data);
 340         if (err < 0)
 341                 return err;
 342
 343         return register_netdevice(bond_dev);
 344 }
 345
 346 static size_t bond_get_size(const struct net_device *bond_dev)
 347 {
 348         return nla_total_size(sizeof(u8)) +     /* IFLA_BOND_MODE */
 349                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ACTIVE_SLAVE */
 350                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_MIIMON */
 351                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_UPDELAY */
 352                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_DOWNDELAY */
 353                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_USE_CARRIER */
 354                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_INTERVAL */
 355                                                 /* IFLA_BOND_ARP_IP_TARGET */
 356                 nla_total_size(sizeof(struct nlattr)) +
 357                 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
 358                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_VALIDATE */
 359                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_ALL_TARGETS */
 360                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_PRIMARY */
 361                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_PRIMARY_RESELECT */
 362                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_FAIL_OVER_MAC */
 363                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_XMIT_HASH_POLICY */
 364                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_RESEND_IGMP */
 365                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_NUM_PEER_NOTIF */
 366                 nla_total_size(sizeof(u8)) +   /* IFLA_BOND_ALL_SLAVES_ACTIVE */
 367                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_MIN_LINKS */
 368                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_LP_INTERVAL */
 369                 nla_total_size(sizeof(u32)) +  /* IFLA_BOND_PACKETS_PER_SLAVE */
 370                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_AD_LACP_RATE */
 371                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_AD_SELECT */
 372                 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
 373                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
 374                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
 375                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
 376                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
 377                 nla_total_size(ETH_ALEN) +    /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
 378                 0;
 379 }
 380
 381 static int bond_fill_info(struct sk_buff *skb,
 382                           const struct net_device *bond_dev)
 383 {
 384         struct bonding *bond = netdev_priv(bond_dev);
 385         struct net_device *slave_dev = bond_option_active_slave_get(bond);
 386         struct nlattr *targets;
 387         unsigned int packets_per_slave;
 388         int i, targets_added;
 389
 390         if (nla_put_u8(skb, IFLA_BOND_MODE, bond->params.mode))
 391                 goto nla_put_failure;
 392
 393         if (slave_dev &&
 394             nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, slave_dev->ifindex))
 395                 goto nla_put_failure;
 396
 397         if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
 398                 goto nla_put_failure;
 399
 400         if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
 401                         bond->params.updelay * bond->params.miimon))
 402                 goto nla_put_failure;
 403
 404         if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
 405                         bond->params.downdelay * bond->params.miimon))
 406                 goto nla_put_failure;
 407
 408         if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
 409                 goto nla_put_failure;
 410
 411         if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
 412                 goto nla_put_failure;
 413
 414         targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
 415         if (!targets)
 416                 goto nla_put_failure;
 417
 418         targets_added = 0;
 419         for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
 420                 if (bond->params.arp_targets[i]) {
 421                         nla_put_be32(skb, i, bond->params.arp_targets[i]);
 422                         targets_added = 1;
 423                 }
 424         }
 425
 426         if (targets_added)
 427                 nla_nest_end(skb, targets);
 428         else
 429                 nla_nest_cancel(skb, targets);
 430
 431         if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
 432                 goto nla_put_failure;
 433
 434         if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
 435                         bond->params.arp_all_targets))
 436                 goto nla_put_failure;
 437
 438         if (bond->primary_slave &&
 439             nla_put_u32(skb, IFLA_BOND_PRIMARY,
 440                         bond->primary_slave->dev->ifindex))
 441                 goto nla_put_failure;
 442
 443         if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
 444                        bond->params.primary_reselect))
 445                 goto nla_put_failure;
 446
 447         if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
 448                        bond->params.fail_over_mac))
 449                 goto nla_put_failure;
 450
 451         if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
 452                        bond->params.xmit_policy))
 453                 goto nla_put_failure;
 454
 455         if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
 456                         bond->params.resend_igmp))
 457                 goto nla_put_failure;
 458
 459         if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
 460                        bond->params.num_peer_notif))
 461                 goto nla_put_failure;
 462
 463         if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
 464                        bond->params.all_slaves_active))
 465                 goto nla_put_failure;
 466
 467         if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
 468                         bond->params.min_links))
 469                 goto nla_put_failure;
 470
 471         if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
 472                         bond->params.lp_interval))
 473                 goto nla_put_failure;
 474
 475         packets_per_slave = bond->params.packets_per_slave;
 476         if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
 477                         packets_per_slave))
 478                 goto nla_put_failure;
 479
 480         if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
 481                        bond->params.lacp_fast))
 482                 goto nla_put_failure;
 483
 484         if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
 485                        bond->params.ad_select))
 486                 goto nla_put_failure;
 487
 488         if (bond->params.mode == BOND_MODE_8023AD) {
 489                 struct ad_info info;
 490
 491                 if (!bond_3ad_get_active_agg_info(bond, &info)) {
 492                         struct nlattr *nest;
 493
 494                         nest = nla_nest_start(skb, IFLA_BOND_AD_INFO);
 495                         if (!nest)
 496                                 goto nla_put_failure;
 497
 498                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
 499                                         info.aggregator_id))
 500                                 goto nla_put_failure;
 501                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
 502                                         info.ports))
 503                                 goto nla_put_failure;
 504                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
 505                                         info.actor_key))
 506                                 goto nla_put_failure;
 507                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
 508                                         info.partner_key))
 509                                 goto nla_put_failure;
 510                         if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
 511                                     sizeof(info.partner_system),
 512                                     &info.partner_system))
 513                                 goto nla_put_failure;
 514
 515                         nla_nest_end(skb, nest);
 516                 }
 517         }
 518
 519         return 0;
 520
 521 nla_put_failure:
 522         return -EMSGSIZE;
 523 }
 524
 525 struct rtnl_link_ops bond_link_ops __read_mostly = {
 526         .kind                   = "bond",
 527         .priv_size              = sizeof(struct bonding),
 528         .setup                  = bond_setup,
 529         .maxtype                = IFLA_BOND_MAX,
 530         .policy                 = bond_policy,
 531         .validate               = bond_validate,
 532         .newlink                = bond_newlink,
 533         .changelink             = bond_changelink,
 534         .get_size               = bond_get_size,
 535         .fill_info              = bond_fill_info,
 536         .get_num_tx_queues      = bond_get_num_tx_queues,
 537         .get_num_rx_queues      = bond_get_num_tx_queues, /* Use the same number
 538                                                              as for TX queues */
 539 };
 540
 541 int __init bond_netlink_init(void)
 542 {
 543         return rtnl_link_register(&bond_link_ops);
 544 }
 545
 546 void bond_netlink_fini(void)
 547 {
 548         rtnl_link_unregister(&bond_link_ops);
 549 }
 550
 551 MODULE_ALIAS_RTNL_LINK("bond");