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 "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                 0;
  32 }
  33
  34 static int bond_fill_slave_info(struct sk_buff *skb,
  35                                 const struct net_device *bond_dev,
  36                                 const struct net_device *slave_dev)
  37 {
  38         struct slave *slave = bond_slave_get_rtnl(slave_dev);
  39
  40         if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave)))
  41                 goto nla_put_failure;
  42
  43         if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link))
  44                 goto nla_put_failure;
  45
  46         if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT,
  47                         slave->link_failure_count))
  48                 goto nla_put_failure;
  49
  50         if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR,
  51                     slave_dev->addr_len, slave->perm_hwaddr))
  52                 goto nla_put_failure;
  53
  54         if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id))
  55                 goto nla_put_failure;
  56
  57         if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
  58                 const struct aggregator *agg;
  59
  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         }
  66
  67         return 0;
  68
  69 nla_put_failure:
  70         return -EMSGSIZE;
  71 }
  72
  73 static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
  74         [IFLA_BOND_MODE]                = { .type = NLA_U8 },
  75         [IFLA_BOND_ACTIVE_SLAVE]        = { .type = NLA_U32 },
  76         [IFLA_BOND_MIIMON]              = { .type = NLA_U32 },
  77         [IFLA_BOND_UPDELAY]             = { .type = NLA_U32 },
  78         [IFLA_BOND_DOWNDELAY]           = { .type = NLA_U32 },
  79         [IFLA_BOND_USE_CARRIER]         = { .type = NLA_U8 },
  80         [IFLA_BOND_ARP_INTERVAL]        = { .type = NLA_U32 },
  81         [IFLA_BOND_ARP_IP_TARGET]       = { .type = NLA_NESTED },
  82         [IFLA_BOND_ARP_VALIDATE]        = { .type = NLA_U32 },
  83         [IFLA_BOND_ARP_ALL_TARGETS]     = { .type = NLA_U32 },
  84         [IFLA_BOND_PRIMARY]             = { .type = NLA_U32 },
  85         [IFLA_BOND_PRIMARY_RESELECT]    = { .type = NLA_U8 },
  86         [IFLA_BOND_FAIL_OVER_MAC]       = { .type = NLA_U8 },
  87         [IFLA_BOND_XMIT_HASH_POLICY]    = { .type = NLA_U8 },
  88         [IFLA_BOND_RESEND_IGMP]         = { .type = NLA_U32 },
  89         [IFLA_BOND_NUM_PEER_NOTIF]      = { .type = NLA_U8 },
  90         [IFLA_BOND_ALL_SLAVES_ACTIVE]   = { .type = NLA_U8 },
  91         [IFLA_BOND_MIN_LINKS]           = { .type = NLA_U32 },
  92         [IFLA_BOND_LP_INTERVAL]         = { .type = NLA_U32 },
  93         [IFLA_BOND_PACKETS_PER_SLAVE]   = { .type = NLA_U32 },
  94         [IFLA_BOND_AD_LACP_RATE]        = { .type = NLA_U8 },
  95         [IFLA_BOND_AD_SELECT]           = { .type = NLA_U8 },
  96         [IFLA_BOND_AD_INFO]             = { .type = NLA_NESTED },
  97 };
  98
  99 static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
 100 {
 101         if (tb[IFLA_ADDRESS]) {
 102                 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
 103                         return -EINVAL;
 104                 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
 105                         return -EADDRNOTAVAIL;
 106         }
 107         return 0;
 108 }
 109
 110 static int bond_changelink(struct net_device *bond_dev,
 111                            struct nlattr *tb[], struct nlattr *data[])
 112 {
 113         struct bonding *bond = netdev_priv(bond_dev);
 114         struct bond_opt_value newval;
 115         int miimon = 0;
 116         int err;
 117
 118         if (!data)
 119                 return 0;
 120
 121         if (data[IFLA_BOND_MODE]) {
 122                 int mode = nla_get_u8(data[IFLA_BOND_MODE]);
 123
 124                 bond_opt_initval(&newval, mode);
 125                 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval);
 126                 if (err)
 127                         return err;
 128         }
 129         if (data[IFLA_BOND_ACTIVE_SLAVE]) {
 130                 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
 131                 struct net_device *slave_dev;
 132                 char *active_slave = "";
 133
 134                 if (ifindex != 0) {
 135                         slave_dev = __dev_get_by_index(dev_net(bond_dev),
 136                                                        ifindex);
 137                         if (!slave_dev)
 138                                 return -ENODEV;
 139                         active_slave = slave_dev->name;
 140                 }
 141                 bond_opt_initstr(&newval, active_slave);
 142                 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval);
 143                 if (err)
 144                         return err;
 145         }
 146         if (data[IFLA_BOND_MIIMON]) {
 147                 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
 148
 149                 bond_opt_initval(&newval, miimon);
 150                 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval);
 151                 if (err)
 152                         return err;
 153         }
 154         if (data[IFLA_BOND_UPDELAY]) {
 155                 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
 156
 157                 bond_opt_initval(&newval, updelay);
 158                 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval);
 159                 if (err)
 160                         return err;
 161         }
 162         if (data[IFLA_BOND_DOWNDELAY]) {
 163                 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
 164
 165                 bond_opt_initval(&newval, downdelay);
 166                 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
 167                 if (err)
 168                         return err;
 169         }
 170         if (data[IFLA_BOND_USE_CARRIER]) {
 171                 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
 172
 173                 bond_opt_initval(&newval, use_carrier);
 174                 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval);
 175                 if (err)
 176                         return err;
 177         }
 178         if (data[IFLA_BOND_ARP_INTERVAL]) {
 179                 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
 180
 181                 if (arp_interval && miimon) {
 182                         netdev_err(bond->dev, "ARP monitoring cannot be used with MII monitoring\n");
 183                         return -EINVAL;
 184                 }
 185
 186                 bond_opt_initval(&newval, arp_interval);
 187                 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
 188                 if (err)
 189                         return err;
 190         }
 191         if (data[IFLA_BOND_ARP_IP_TARGET]) {
 192                 struct nlattr *attr;
 193                 int i = 0, rem;
 194
 195                 bond_option_arp_ip_targets_clear(bond);
 196                 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
 197                         __be32 target = nla_get_be32(attr);
 198
 199                         bond_opt_initval(&newval, (__force u64)target);
 200                         err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
 201                                              &newval);
 202                         if (err)
 203                                 break;
 204                         i++;
 205                 }
 206                 if (i == 0 && bond->params.arp_interval)
 207                         netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
 208                 if (err)
 209                         return err;
 210         }
 211         if (data[IFLA_BOND_ARP_VALIDATE]) {
 212                 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
 213
 214                 if (arp_validate && miimon) {
 215                         netdev_err(bond->dev, "ARP validating cannot be used with MII monitoring\n");
 216                         return -EINVAL;
 217                 }
 218
 219                 bond_opt_initval(&newval, arp_validate);
 220                 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval);
 221                 if (err)
 222                         return err;
 223         }
 224         if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
 225                 int arp_all_targets =
 226                         nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
 227
 228                 bond_opt_initval(&newval, arp_all_targets);
 229                 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval);
 230                 if (err)
 231                         return err;
 232         }
 233         if (data[IFLA_BOND_PRIMARY]) {
 234                 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
 235                 struct net_device *dev;
 236                 char *primary = "";
 237
 238                 dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
 239                 if (dev)
 240                         primary = dev->name;
 241
 242                 bond_opt_initstr(&newval, primary);
 243                 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval);
 244                 if (err)
 245                         return err;
 246         }
 247         if (data[IFLA_BOND_PRIMARY_RESELECT]) {
 248                 int primary_reselect =
 249                         nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
 250
 251                 bond_opt_initval(&newval, primary_reselect);
 252                 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval);
 253                 if (err)
 254                         return err;
 255         }
 256         if (data[IFLA_BOND_FAIL_OVER_MAC]) {
 257                 int fail_over_mac =
 258                         nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
 259
 260                 bond_opt_initval(&newval, fail_over_mac);
 261                 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval);
 262                 if (err)
 263                         return err;
 264         }
 265         if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
 266                 int xmit_hash_policy =
 267                         nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
 268
 269                 bond_opt_initval(&newval, xmit_hash_policy);
 270                 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval);
 271                 if (err)
 272                         return err;
 273         }
 274         if (data[IFLA_BOND_RESEND_IGMP]) {
 275                 int resend_igmp =
 276                         nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
 277
 278                 bond_opt_initval(&newval, resend_igmp);
 279                 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval);
 280                 if (err)
 281                         return err;
 282         }
 283         if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
 284                 int num_peer_notif =
 285                         nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
 286
 287                 bond_opt_initval(&newval, num_peer_notif);
 288                 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval);
 289                 if (err)
 290                         return err;
 291         }
 292         if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
 293                 int all_slaves_active =
 294                         nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
 295
 296                 bond_opt_initval(&newval, all_slaves_active);
 297                 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval);
 298                 if (err)
 299                         return err;
 300         }
 301         if (data[IFLA_BOND_MIN_LINKS]) {
 302                 int min_links =
 303                         nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
 304
 305                 bond_opt_initval(&newval, min_links);
 306                 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval);
 307                 if (err)
 308                         return err;
 309         }
 310         if (data[IFLA_BOND_LP_INTERVAL]) {
 311                 int lp_interval =
 312                         nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
 313
 314                 bond_opt_initval(&newval, lp_interval);
 315                 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval);
 316                 if (err)
 317                         return err;
 318         }
 319         if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
 320                 int packets_per_slave =
 321                         nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
 322
 323                 bond_opt_initval(&newval, packets_per_slave);
 324                 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
 325                 if (err)
 326                         return err;
 327         }
 328         if (data[IFLA_BOND_AD_LACP_RATE]) {
 329                 int lacp_rate =
 330                         nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
 331
 332                 bond_opt_initval(&newval, lacp_rate);
 333                 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval);
 334                 if (err)
 335                         return err;
 336         }
 337         if (data[IFLA_BOND_AD_SELECT]) {
 338                 int ad_select =
 339                         nla_get_u8(data[IFLA_BOND_AD_SELECT]);
 340
 341                 bond_opt_initval(&newval, ad_select);
 342                 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval);
 343                 if (err)
 344                         return err;
 345         }
 346         return 0;
 347 }
 348
 349 static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
 350                         struct nlattr *tb[], struct nlattr *data[])
 351 {
 352         int err;
 353
 354         err = bond_changelink(bond_dev, tb, data);
 355         if (err < 0)
 356                 return err;
 357
 358         return register_netdevice(bond_dev);
 359 }
 360
 361 static size_t bond_get_size(const struct net_device *bond_dev)
 362 {
 363         return nla_total_size(sizeof(u8)) +     /* IFLA_BOND_MODE */
 364                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ACTIVE_SLAVE */
 365                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_MIIMON */
 366                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_UPDELAY */
 367                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_DOWNDELAY */
 368                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_USE_CARRIER */
 369                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_INTERVAL */
 370                                                 /* IFLA_BOND_ARP_IP_TARGET */
 371                 nla_total_size(sizeof(struct nlattr)) +
 372                 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
 373                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_VALIDATE */
 374                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_ALL_TARGETS */
 375                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_PRIMARY */
 376                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_PRIMARY_RESELECT */
 377                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_FAIL_OVER_MAC */
 378                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_XMIT_HASH_POLICY */
 379                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_RESEND_IGMP */
 380                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_NUM_PEER_NOTIF */
 381                 nla_total_size(sizeof(u8)) +   /* IFLA_BOND_ALL_SLAVES_ACTIVE */
 382                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_MIN_LINKS */
 383                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_LP_INTERVAL */
 384                 nla_total_size(sizeof(u32)) +  /* IFLA_BOND_PACKETS_PER_SLAVE */
 385                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_AD_LACP_RATE */
 386                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_AD_SELECT */
 387                 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
 388                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
 389                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
 390                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
 391                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
 392                 nla_total_size(ETH_ALEN) +    /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
 393                 0;
 394 }
 395
 396 static int bond_option_active_slave_get_ifindex(struct bonding *bond)
 397 {
 398         const struct net_device *slave;
 399         int ifindex;
 400
 401         rcu_read_lock();
 402         slave = bond_option_active_slave_get_rcu(bond);
 403         ifindex = slave ? slave->ifindex : 0;
 404         rcu_read_unlock();
 405         return ifindex;
 406 }
 407
 408 static int bond_fill_info(struct sk_buff *skb,
 409                           const struct net_device *bond_dev)
 410 {
 411         struct bonding *bond = netdev_priv(bond_dev);
 412         unsigned int packets_per_slave;
 413         int ifindex, i, targets_added;
 414         struct nlattr *targets;
 415
 416         if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
 417                 goto nla_put_failure;
 418
 419         ifindex = bond_option_active_slave_get_ifindex(bond);
 420         if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))
 421                 goto nla_put_failure;
 422
 423         if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
 424                 goto nla_put_failure;
 425
 426         if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
 427                         bond->params.updelay * bond->params.miimon))
 428                 goto nla_put_failure;
 429
 430         if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
 431                         bond->params.downdelay * bond->params.miimon))
 432                 goto nla_put_failure;
 433
 434         if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
 435                 goto nla_put_failure;
 436
 437         if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
 438                 goto nla_put_failure;
 439
 440         targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
 441         if (!targets)
 442                 goto nla_put_failure;
 443
 444         targets_added = 0;
 445         for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
 446                 if (bond->params.arp_targets[i]) {
 447                         nla_put_be32(skb, i, bond->params.arp_targets[i]);
 448                         targets_added = 1;
 449                 }
 450         }
 451
 452         if (targets_added)
 453                 nla_nest_end(skb, targets);
 454         else
 455                 nla_nest_cancel(skb, targets);
 456
 457         if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
 458                 goto nla_put_failure;
 459
 460         if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
 461                         bond->params.arp_all_targets))
 462                 goto nla_put_failure;
 463
 464         if (bond->primary_slave &&
 465             nla_put_u32(skb, IFLA_BOND_PRIMARY,
 466                         bond->primary_slave->dev->ifindex))
 467                 goto nla_put_failure;
 468
 469         if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
 470                        bond->params.primary_reselect))
 471                 goto nla_put_failure;
 472
 473         if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
 474                        bond->params.fail_over_mac))
 475                 goto nla_put_failure;
 476
 477         if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
 478                        bond->params.xmit_policy))
 479                 goto nla_put_failure;
 480
 481         if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
 482                         bond->params.resend_igmp))
 483                 goto nla_put_failure;
 484
 485         if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
 486                        bond->params.num_peer_notif))
 487                 goto nla_put_failure;
 488
 489         if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
 490                        bond->params.all_slaves_active))
 491                 goto nla_put_failure;
 492
 493         if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
 494                         bond->params.min_links))
 495                 goto nla_put_failure;
 496
 497         if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
 498                         bond->params.lp_interval))
 499                 goto nla_put_failure;
 500
 501         packets_per_slave = bond->params.packets_per_slave;
 502         if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
 503                         packets_per_slave))
 504                 goto nla_put_failure;
 505
 506         if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
 507                        bond->params.lacp_fast))
 508                 goto nla_put_failure;
 509
 510         if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
 511                        bond->params.ad_select))
 512                 goto nla_put_failure;
 513
 514         if (BOND_MODE(bond) == BOND_MODE_8023AD) {
 515                 struct ad_info info;
 516
 517                 if (!bond_3ad_get_active_agg_info(bond, &info)) {
 518                         struct nlattr *nest;
 519
 520                         nest = nla_nest_start(skb, IFLA_BOND_AD_INFO);
 521                         if (!nest)
 522                                 goto nla_put_failure;
 523
 524                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
 525                                         info.aggregator_id))
 526                                 goto nla_put_failure;
 527                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
 528                                         info.ports))
 529                                 goto nla_put_failure;
 530                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
 531                                         info.actor_key))
 532                                 goto nla_put_failure;
 533                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
 534                                         info.partner_key))
 535                                 goto nla_put_failure;
 536                         if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
 537                                     sizeof(info.partner_system),
 538                                     &info.partner_system))
 539                                 goto nla_put_failure;
 540
 541                         nla_nest_end(skb, nest);
 542                 }
 543         }
 544
 545         return 0;
 546
 547 nla_put_failure:
 548         return -EMSGSIZE;
 549 }
 550
 551 struct rtnl_link_ops bond_link_ops __read_mostly = {
 552         .kind                   = "bond",
 553         .priv_size              = sizeof(struct bonding),
 554         .setup                  = bond_setup,
 555         .maxtype                = IFLA_BOND_MAX,
 556         .policy                 = bond_policy,
 557         .validate               = bond_validate,
 558         .newlink                = bond_newlink,
 559         .changelink             = bond_changelink,
 560         .get_size               = bond_get_size,
 561         .fill_info              = bond_fill_info,
 562         .get_num_tx_queues      = bond_get_num_tx_queues,
 563         .get_num_rx_queues      = bond_get_num_tx_queues, /* Use the same number
 564                                                              as for TX queues */
 565         .get_slave_size         = bond_get_slave_size,
 566         .fill_slave_info        = bond_fill_slave_info,
 567 };
 568
 569 int __init bond_netlink_init(void)
 570 {
 571         return rtnl_link_register(&bond_link_ops);
 572 }
 573
 574 void bond_netlink_fini(void)
 575 {
 576         rtnl_link_unregister(&bond_link_ops);
 577 }
 578
 579 MODULE_ALIAS_RTNL_LINK("bond");