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 static size_t bond_get_slave_size(const struct net_device *bond_dev,
  25                                   const struct net_device *slave_dev)
  26 {
  27         return nla_total_size(sizeof(u8)) +     /* IFLA_BOND_SLAVE_STATE */
  28                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_SLAVE_MII_STATUS */
  29                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */
  30                 nla_total_size(MAX_ADDR_LEN) +  /* IFLA_BOND_SLAVE_PERM_HWADDR */
  31                 nla_total_size(sizeof(u16)) +   /* IFLA_BOND_SLAVE_QUEUE_ID */
  32                 nla_total_size(sizeof(u16)) +   /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
  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
  62                 agg = SLAVE_AD_INFO(slave)->port.aggregator;
  63                 if (agg)
  64                         if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID,
  65                                         agg->aggregator_identifier))
  66                                 goto nla_put_failure;
  67         }
  68
  69         return 0;
  70
  71 nla_put_failure:
  72         return -EMSGSIZE;
  73 }
  74
  75 static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
  76         [IFLA_BOND_MODE]                = { .type = NLA_U8 },
  77         [IFLA_BOND_ACTIVE_SLAVE]        = { .type = NLA_U32 },
  78         [IFLA_BOND_MIIMON]              = { .type = NLA_U32 },
  79         [IFLA_BOND_UPDELAY]             = { .type = NLA_U32 },
  80         [IFLA_BOND_DOWNDELAY]           = { .type = NLA_U32 },
  81         [IFLA_BOND_USE_CARRIER]         = { .type = NLA_U8 },
  82         [IFLA_BOND_ARP_INTERVAL]        = { .type = NLA_U32 },
  83         [IFLA_BOND_ARP_IP_TARGET]       = { .type = NLA_NESTED },
  84         [IFLA_BOND_ARP_VALIDATE]        = { .type = NLA_U32 },
  85         [IFLA_BOND_ARP_ALL_TARGETS]     = { .type = NLA_U32 },
  86         [IFLA_BOND_PRIMARY]             = { .type = NLA_U32 },
  87         [IFLA_BOND_PRIMARY_RESELECT]    = { .type = NLA_U8 },
  88         [IFLA_BOND_FAIL_OVER_MAC]       = { .type = NLA_U8 },
  89         [IFLA_BOND_XMIT_HASH_POLICY]    = { .type = NLA_U8 },
  90         [IFLA_BOND_RESEND_IGMP]         = { .type = NLA_U32 },
  91         [IFLA_BOND_NUM_PEER_NOTIF]      = { .type = NLA_U8 },
  92         [IFLA_BOND_ALL_SLAVES_ACTIVE]   = { .type = NLA_U8 },
  93         [IFLA_BOND_MIN_LINKS]           = { .type = NLA_U32 },
  94         [IFLA_BOND_LP_INTERVAL]         = { .type = NLA_U32 },
  95         [IFLA_BOND_PACKETS_PER_SLAVE]   = { .type = NLA_U32 },
  96         [IFLA_BOND_AD_LACP_RATE]        = { .type = NLA_U8 },
  97         [IFLA_BOND_AD_SELECT]           = { .type = NLA_U8 },
  98         [IFLA_BOND_AD_INFO]             = { .type = NLA_NESTED },
  99 };
 100
 101 static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
 102 {
 103         if (tb[IFLA_ADDRESS]) {
 104                 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
 105                         return -EINVAL;
 106                 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
 107                         return -EADDRNOTAVAIL;
 108         }
 109         return 0;
 110 }
 111
 112 static int bond_changelink(struct net_device *bond_dev,
 113                            struct nlattr *tb[], struct nlattr *data[])
 114 {
 115         struct bonding *bond = netdev_priv(bond_dev);
 116         struct bond_opt_value newval;
 117         int miimon = 0;
 118         int err;
 119
 120         if (!data)
 121                 return 0;
 122
 123         if (data[IFLA_BOND_MODE]) {
 124                 int mode = nla_get_u8(data[IFLA_BOND_MODE]);
 125
 126                 bond_opt_initval(&newval, mode);
 127                 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval);
 128                 if (err)
 129                         return err;
 130         }
 131         if (data[IFLA_BOND_ACTIVE_SLAVE]) {
 132                 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
 133                 struct net_device *slave_dev;
 134                 char *active_slave = "";
 135
 136                 if (ifindex != 0) {
 137                         slave_dev = __dev_get_by_index(dev_net(bond_dev),
 138                                                        ifindex);
 139                         if (!slave_dev)
 140                                 return -ENODEV;
 141                         active_slave = slave_dev->name;
 142                 }
 143                 bond_opt_initstr(&newval, active_slave);
 144                 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval);
 145                 if (err)
 146                         return err;
 147         }
 148         if (data[IFLA_BOND_MIIMON]) {
 149                 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
 150
 151                 bond_opt_initval(&newval, miimon);
 152                 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval);
 153                 if (err)
 154                         return err;
 155         }
 156         if (data[IFLA_BOND_UPDELAY]) {
 157                 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
 158
 159                 bond_opt_initval(&newval, updelay);
 160                 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval);
 161                 if (err)
 162                         return err;
 163         }
 164         if (data[IFLA_BOND_DOWNDELAY]) {
 165                 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
 166
 167                 bond_opt_initval(&newval, downdelay);
 168                 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
 169                 if (err)
 170                         return err;
 171         }
 172         if (data[IFLA_BOND_USE_CARRIER]) {
 173                 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
 174
 175                 bond_opt_initval(&newval, use_carrier);
 176                 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval);
 177                 if (err)
 178                         return err;
 179         }
 180         if (data[IFLA_BOND_ARP_INTERVAL]) {
 181                 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
 182
 183                 if (arp_interval && miimon) {
 184                         pr_err("%s: ARP monitoring cannot be used with MII monitoring\n",
 185                                bond->dev->name);
 186                         return -EINVAL;
 187                 }
 188
 189                 bond_opt_initval(&newval, arp_interval);
 190                 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
 191                 if (err)
 192                         return err;
 193         }
 194         if (data[IFLA_BOND_ARP_IP_TARGET]) {
 195                 struct nlattr *attr;
 196                 int i = 0, rem;
 197
 198                 bond_option_arp_ip_targets_clear(bond);
 199                 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
 200                         __be32 target = nla_get_be32(attr);
 201
 202                         bond_opt_initval(&newval, (__force u64)target);
 203                         err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
 204                                              &newval);
 205                         if (err)
 206                                 break;
 207                         i++;
 208                 }
 209                 if (i == 0 && bond->params.arp_interval)
 210                         pr_warn("%s: Removing last arp target with arp_interval on\n",
 211                                 bond->dev->name);
 212                 if (err)
 213                         return err;
 214         }
 215         if (data[IFLA_BOND_ARP_VALIDATE]) {
 216                 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
 217
 218                 if (arp_validate && miimon) {
 219                         pr_err("%s: ARP validating cannot be used with MII monitoring\n",
 220                                bond->dev->name);
 221                         return -EINVAL;
 222                 }
 223
 224                 bond_opt_initval(&newval, arp_validate);
 225                 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval);
 226                 if (err)
 227                         return err;
 228         }
 229         if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
 230                 int arp_all_targets =
 231                         nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
 232
 233                 bond_opt_initval(&newval, arp_all_targets);
 234                 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval);
 235                 if (err)
 236                         return err;
 237         }
 238         if (data[IFLA_BOND_PRIMARY]) {
 239                 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
 240                 struct net_device *dev;
 241                 char *primary = "";
 242
 243                 dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
 244                 if (dev)
 245                         primary = dev->name;
 246
 247                 bond_opt_initstr(&newval, primary);
 248                 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval);
 249                 if (err)
 250                         return err;
 251         }
 252         if (data[IFLA_BOND_PRIMARY_RESELECT]) {
 253                 int primary_reselect =
 254                         nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
 255
 256                 bond_opt_initval(&newval, primary_reselect);
 257                 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval);
 258                 if (err)
 259                         return err;
 260         }
 261         if (data[IFLA_BOND_FAIL_OVER_MAC]) {
 262                 int fail_over_mac =
 263                         nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
 264
 265                 bond_opt_initval(&newval, fail_over_mac);
 266                 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval);
 267                 if (err)
 268                         return err;
 269         }
 270         if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
 271                 int xmit_hash_policy =
 272                         nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
 273
 274                 bond_opt_initval(&newval, xmit_hash_policy);
 275                 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval);
 276                 if (err)
 277                         return err;
 278         }
 279         if (data[IFLA_BOND_RESEND_IGMP]) {
 280                 int resend_igmp =
 281                         nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
 282
 283                 bond_opt_initval(&newval, resend_igmp);
 284                 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval);
 285                 if (err)
 286                         return err;
 287         }
 288         if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
 289                 int num_peer_notif =
 290                         nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
 291
 292                 bond_opt_initval(&newval, num_peer_notif);
 293                 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval);
 294                 if (err)
 295                         return err;
 296         }
 297         if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
 298                 int all_slaves_active =
 299                         nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
 300
 301                 bond_opt_initval(&newval, all_slaves_active);
 302                 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval);
 303                 if (err)
 304                         return err;
 305         }
 306         if (data[IFLA_BOND_MIN_LINKS]) {
 307                 int min_links =
 308                         nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
 309
 310                 bond_opt_initval(&newval, min_links);
 311                 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval);
 312                 if (err)
 313                         return err;
 314         }
 315         if (data[IFLA_BOND_LP_INTERVAL]) {
 316                 int lp_interval =
 317                         nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
 318
 319                 bond_opt_initval(&newval, lp_interval);
 320                 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval);
 321                 if (err)
 322                         return err;
 323         }
 324         if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
 325                 int packets_per_slave =
 326                         nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
 327
 328                 bond_opt_initval(&newval, packets_per_slave);
 329                 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
 330                 if (err)
 331                         return err;
 332         }
 333         if (data[IFLA_BOND_AD_LACP_RATE]) {
 334                 int lacp_rate =
 335                         nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
 336
 337                 bond_opt_initval(&newval, lacp_rate);
 338                 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval);
 339                 if (err)
 340                         return err;
 341         }
 342         if (data[IFLA_BOND_AD_SELECT]) {
 343                 int ad_select =
 344                         nla_get_u8(data[IFLA_BOND_AD_SELECT]);
 345
 346                 bond_opt_initval(&newval, ad_select);
 347                 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval);
 348                 if (err)
 349                         return err;
 350         }
 351         return 0;
 352 }
 353
 354 static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
 355                         struct nlattr *tb[], struct nlattr *data[])
 356 {
 357         int err;
 358
 359         err = bond_changelink(bond_dev, tb, data);
 360         if (err < 0)
 361                 return err;
 362
 363         return register_netdevice(bond_dev);
 364 }
 365
 366 static size_t bond_get_size(const struct net_device *bond_dev)
 367 {
 368         return nla_total_size(sizeof(u8)) +     /* IFLA_BOND_MODE */
 369                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ACTIVE_SLAVE */
 370                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_MIIMON */
 371                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_UPDELAY */
 372                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_DOWNDELAY */
 373                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_USE_CARRIER */
 374                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_INTERVAL */
 375                                                 /* IFLA_BOND_ARP_IP_TARGET */
 376                 nla_total_size(sizeof(struct nlattr)) +
 377                 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
 378                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_VALIDATE */
 379                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_ALL_TARGETS */
 380                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_PRIMARY */
 381                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_PRIMARY_RESELECT */
 382                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_FAIL_OVER_MAC */
 383                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_XMIT_HASH_POLICY */
 384                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_RESEND_IGMP */
 385                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_NUM_PEER_NOTIF */
 386                 nla_total_size(sizeof(u8)) +   /* IFLA_BOND_ALL_SLAVES_ACTIVE */
 387                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_MIN_LINKS */
 388                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_LP_INTERVAL */
 389                 nla_total_size(sizeof(u32)) +  /* IFLA_BOND_PACKETS_PER_SLAVE */
 390                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_AD_LACP_RATE */
 391                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_AD_SELECT */
 392                 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
 393                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
 394                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
 395                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
 396                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
 397                 nla_total_size(ETH_ALEN) +    /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
 398                 0;
 399 }
 400
 401 static int bond_option_active_slave_get_ifindex(struct bonding *bond)
 402 {
 403         const struct net_device *slave;
 404         int ifindex;
 405
 406         rcu_read_lock();
 407         slave = bond_option_active_slave_get_rcu(bond);
 408         ifindex = slave ? slave->ifindex : 0;
 409         rcu_read_unlock();
 410         return ifindex;
 411 }
 412
 413 static int bond_fill_info(struct sk_buff *skb,
 414                           const struct net_device *bond_dev)
 415 {
 416         struct bonding *bond = netdev_priv(bond_dev);
 417         unsigned int packets_per_slave;
 418         int ifindex, i, targets_added;
 419         struct nlattr *targets;
 420
 421         if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
 422                 goto nla_put_failure;
 423
 424         ifindex = bond_option_active_slave_get_ifindex(bond);
 425         if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))
 426                 goto nla_put_failure;
 427
 428         if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
 429                 goto nla_put_failure;
 430
 431         if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
 432                         bond->params.updelay * bond->params.miimon))
 433                 goto nla_put_failure;
 434
 435         if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
 436                         bond->params.downdelay * bond->params.miimon))
 437                 goto nla_put_failure;
 438
 439         if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
 440                 goto nla_put_failure;
 441
 442         if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
 443                 goto nla_put_failure;
 444
 445         targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
 446         if (!targets)
 447                 goto nla_put_failure;
 448
 449         targets_added = 0;
 450         for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
 451                 if (bond->params.arp_targets[i]) {
 452                         nla_put_be32(skb, i, bond->params.arp_targets[i]);
 453                         targets_added = 1;
 454                 }
 455         }
 456
 457         if (targets_added)
 458                 nla_nest_end(skb, targets);
 459         else
 460                 nla_nest_cancel(skb, targets);
 461
 462         if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
 463                 goto nla_put_failure;
 464
 465         if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
 466                         bond->params.arp_all_targets))
 467                 goto nla_put_failure;
 468
 469         if (bond->primary_slave &&
 470             nla_put_u32(skb, IFLA_BOND_PRIMARY,
 471                         bond->primary_slave->dev->ifindex))
 472                 goto nla_put_failure;
 473
 474         if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
 475                        bond->params.primary_reselect))
 476                 goto nla_put_failure;
 477
 478         if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
 479                        bond->params.fail_over_mac))
 480                 goto nla_put_failure;
 481
 482         if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
 483                        bond->params.xmit_policy))
 484                 goto nla_put_failure;
 485
 486         if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
 487                         bond->params.resend_igmp))
 488                 goto nla_put_failure;
 489
 490         if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
 491                        bond->params.num_peer_notif))
 492                 goto nla_put_failure;
 493
 494         if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
 495                        bond->params.all_slaves_active))
 496                 goto nla_put_failure;
 497
 498         if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
 499                         bond->params.min_links))
 500                 goto nla_put_failure;
 501
 502         if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
 503                         bond->params.lp_interval))
 504                 goto nla_put_failure;
 505
 506         packets_per_slave = bond->params.packets_per_slave;
 507         if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
 508                         packets_per_slave))
 509                 goto nla_put_failure;
 510
 511         if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
 512                        bond->params.lacp_fast))
 513                 goto nla_put_failure;
 514
 515         if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
 516                        bond->params.ad_select))
 517                 goto nla_put_failure;
 518
 519         if (BOND_MODE(bond) == BOND_MODE_8023AD) {
 520                 struct ad_info info;
 521
 522                 if (!bond_3ad_get_active_agg_info(bond, &info)) {
 523                         struct nlattr *nest;
 524
 525                         nest = nla_nest_start(skb, IFLA_BOND_AD_INFO);
 526                         if (!nest)
 527                                 goto nla_put_failure;
 528
 529                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
 530                                         info.aggregator_id))
 531                                 goto nla_put_failure;
 532                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
 533                                         info.ports))
 534                                 goto nla_put_failure;
 535                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
 536                                         info.actor_key))
 537                                 goto nla_put_failure;
 538                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
 539                                         info.partner_key))
 540                                 goto nla_put_failure;
 541                         if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
 542                                     sizeof(info.partner_system),
 543                                     &info.partner_system))
 544                                 goto nla_put_failure;
 545
 546                         nla_nest_end(skb, nest);
 547                 }
 548         }
 549
 550         return 0;
 551
 552 nla_put_failure:
 553         return -EMSGSIZE;
 554 }
 555
 556 struct rtnl_link_ops bond_link_ops __read_mostly = {
 557         .kind                   = "bond",
 558         .priv_size              = sizeof(struct bonding),
 559         .setup                  = bond_setup,
 560         .maxtype                = IFLA_BOND_MAX,
 561         .policy                 = bond_policy,
 562         .validate               = bond_validate,
 563         .newlink                = bond_newlink,
 564         .changelink             = bond_changelink,
 565         .get_size               = bond_get_size,
 566         .fill_info              = bond_fill_info,
 567         .get_num_tx_queues      = bond_get_num_tx_queues,
 568         .get_num_rx_queues      = bond_get_num_tx_queues, /* Use the same number
 569                                                              as for TX queues */
 570         .get_slave_size         = bond_get_slave_size,
 571         .fill_slave_info        = bond_fill_slave_info,
 572 };
 573
 574 int __init bond_netlink_init(void)
 575 {
 576         return rtnl_link_register(&bond_link_ops);
 577 }
 578
 579 void bond_netlink_fini(void)
 580 {
 581         rtnl_link_unregister(&bond_link_ops);
 582 }
 583
 584 MODULE_ALIAS_RTNL_LINK("bond");