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 };
 115
 116 static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = {
 117         [IFLA_BOND_SLAVE_QUEUE_ID]      = { .type = NLA_U16 },
 118 };
 119
 120 static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
 121 {
 122         if (tb[IFLA_ADDRESS]) {
 123                 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
 124                         return -EINVAL;
 125                 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
 126                         return -EADDRNOTAVAIL;
 127         }
 128         return 0;
 129 }
 130
 131 static int bond_slave_changelink(struct net_device *bond_dev,
 132                                  struct net_device *slave_dev,
 133                                  struct nlattr *tb[], struct nlattr *data[])
 134 {
 135         struct bonding *bond = netdev_priv(bond_dev);
 136         struct bond_opt_value newval;
 137         int err;
 138
 139         if (!data)
 140                 return 0;
 141
 142         if (data[IFLA_BOND_SLAVE_QUEUE_ID]) {
 143                 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]);
 144                 char queue_id_str[IFNAMSIZ + 7];
 145
 146                 /* queue_id option setting expects slave_name:queue_id */
 147                 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n",
 148                          slave_dev->name, queue_id);
 149                 bond_opt_initstr(&newval, queue_id_str);
 150                 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval);
 151                 if (err)
 152                         return err;
 153         }
 154
 155         return 0;
 156 }
 157
 158 static int bond_changelink(struct net_device *bond_dev,
 159                            struct nlattr *tb[], struct nlattr *data[])
 160 {
 161         struct bonding *bond = netdev_priv(bond_dev);
 162         struct bond_opt_value newval;
 163         int miimon = 0;
 164         int err;
 165
 166         if (!data)
 167                 return 0;
 168
 169         if (data[IFLA_BOND_MODE]) {
 170                 int mode = nla_get_u8(data[IFLA_BOND_MODE]);
 171
 172                 bond_opt_initval(&newval, mode);
 173                 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval);
 174                 if (err)
 175                         return err;
 176         }
 177         if (data[IFLA_BOND_ACTIVE_SLAVE]) {
 178                 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
 179                 struct net_device *slave_dev;
 180                 char *active_slave = "";
 181
 182                 if (ifindex != 0) {
 183                         slave_dev = __dev_get_by_index(dev_net(bond_dev),
 184                                                        ifindex);
 185                         if (!slave_dev)
 186                                 return -ENODEV;
 187                         active_slave = slave_dev->name;
 188                 }
 189                 bond_opt_initstr(&newval, active_slave);
 190                 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval);
 191                 if (err)
 192                         return err;
 193         }
 194         if (data[IFLA_BOND_MIIMON]) {
 195                 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
 196
 197                 bond_opt_initval(&newval, miimon);
 198                 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval);
 199                 if (err)
 200                         return err;
 201         }
 202         if (data[IFLA_BOND_UPDELAY]) {
 203                 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
 204
 205                 bond_opt_initval(&newval, updelay);
 206                 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval);
 207                 if (err)
 208                         return err;
 209         }
 210         if (data[IFLA_BOND_DOWNDELAY]) {
 211                 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
 212
 213                 bond_opt_initval(&newval, downdelay);
 214                 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
 215                 if (err)
 216                         return err;
 217         }
 218         if (data[IFLA_BOND_USE_CARRIER]) {
 219                 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
 220
 221                 bond_opt_initval(&newval, use_carrier);
 222                 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval);
 223                 if (err)
 224                         return err;
 225         }
 226         if (data[IFLA_BOND_ARP_INTERVAL]) {
 227                 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
 228
 229                 if (arp_interval && miimon) {
 230                         netdev_err(bond->dev, "ARP monitoring cannot be used with MII monitoring\n");
 231                         return -EINVAL;
 232                 }
 233
 234                 bond_opt_initval(&newval, arp_interval);
 235                 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
 236                 if (err)
 237                         return err;
 238         }
 239         if (data[IFLA_BOND_ARP_IP_TARGET]) {
 240                 struct nlattr *attr;
 241                 int i = 0, rem;
 242
 243                 bond_option_arp_ip_targets_clear(bond);
 244                 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
 245                         __be32 target;
 246
 247                         if (nla_len(attr) < sizeof(target))
 248                                 return -EINVAL;
 249
 250                         target = nla_get_be32(attr);
 251
 252                         bond_opt_initval(&newval, (__force u64)target);
 253                         err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
 254                                              &newval);
 255                         if (err)
 256                                 break;
 257                         i++;
 258                 }
 259                 if (i == 0 && bond->params.arp_interval)
 260                         netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
 261                 if (err)
 262                         return err;
 263         }
 264         if (data[IFLA_BOND_ARP_VALIDATE]) {
 265                 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
 266
 267                 if (arp_validate && miimon) {
 268                         netdev_err(bond->dev, "ARP validating cannot be used with MII monitoring\n");
 269                         return -EINVAL;
 270                 }
 271
 272                 bond_opt_initval(&newval, arp_validate);
 273                 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval);
 274                 if (err)
 275                         return err;
 276         }
 277         if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
 278                 int arp_all_targets =
 279                         nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
 280
 281                 bond_opt_initval(&newval, arp_all_targets);
 282                 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval);
 283                 if (err)
 284                         return err;
 285         }
 286         if (data[IFLA_BOND_PRIMARY]) {
 287                 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
 288                 struct net_device *dev;
 289                 char *primary = "";
 290
 291                 dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
 292                 if (dev)
 293                         primary = dev->name;
 294
 295                 bond_opt_initstr(&newval, primary);
 296                 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval);
 297                 if (err)
 298                         return err;
 299         }
 300         if (data[IFLA_BOND_PRIMARY_RESELECT]) {
 301                 int primary_reselect =
 302                         nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
 303
 304                 bond_opt_initval(&newval, primary_reselect);
 305                 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval);
 306                 if (err)
 307                         return err;
 308         }
 309         if (data[IFLA_BOND_FAIL_OVER_MAC]) {
 310                 int fail_over_mac =
 311                         nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
 312
 313                 bond_opt_initval(&newval, fail_over_mac);
 314                 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval);
 315                 if (err)
 316                         return err;
 317         }
 318         if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
 319                 int xmit_hash_policy =
 320                         nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
 321
 322                 bond_opt_initval(&newval, xmit_hash_policy);
 323                 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval);
 324                 if (err)
 325                         return err;
 326         }
 327         if (data[IFLA_BOND_RESEND_IGMP]) {
 328                 int resend_igmp =
 329                         nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
 330
 331                 bond_opt_initval(&newval, resend_igmp);
 332                 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval);
 333                 if (err)
 334                         return err;
 335         }
 336         if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
 337                 int num_peer_notif =
 338                         nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
 339
 340                 bond_opt_initval(&newval, num_peer_notif);
 341                 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval);
 342                 if (err)
 343                         return err;
 344         }
 345         if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
 346                 int all_slaves_active =
 347                         nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
 348
 349                 bond_opt_initval(&newval, all_slaves_active);
 350                 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval);
 351                 if (err)
 352                         return err;
 353         }
 354         if (data[IFLA_BOND_MIN_LINKS]) {
 355                 int min_links =
 356                         nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
 357
 358                 bond_opt_initval(&newval, min_links);
 359                 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval);
 360                 if (err)
 361                         return err;
 362         }
 363         if (data[IFLA_BOND_LP_INTERVAL]) {
 364                 int lp_interval =
 365                         nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
 366
 367                 bond_opt_initval(&newval, lp_interval);
 368                 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval);
 369                 if (err)
 370                         return err;
 371         }
 372         if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
 373                 int packets_per_slave =
 374                         nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
 375
 376                 bond_opt_initval(&newval, packets_per_slave);
 377                 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
 378                 if (err)
 379                         return err;
 380         }
 381         if (data[IFLA_BOND_AD_LACP_RATE]) {
 382                 int lacp_rate =
 383                         nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
 384
 385                 bond_opt_initval(&newval, lacp_rate);
 386                 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval);
 387                 if (err)
 388                         return err;
 389         }
 390         if (data[IFLA_BOND_AD_SELECT]) {
 391                 int ad_select =
 392                         nla_get_u8(data[IFLA_BOND_AD_SELECT]);
 393
 394                 bond_opt_initval(&newval, ad_select);
 395                 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval);
 396                 if (err)
 397                         return err;
 398         }
 399         if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) {
 400                 int actor_sys_prio =
 401                         nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]);
 402
 403                 bond_opt_initval(&newval, actor_sys_prio);
 404                 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval);
 405                 if (err)
 406                         return err;
 407         }
 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
 419         if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) {
 420                 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN)
 421                         return -EINVAL;
 422
 423                 bond_opt_initval(&newval,
 424                                  nla_get_be64(data[IFLA_BOND_AD_ACTOR_SYSTEM]));
 425                 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval);
 426                 if (err)
 427                         return err;
 428         }
 429         return 0;
 430 }
 431
 432 static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
 433                         struct nlattr *tb[], struct nlattr *data[])
 434 {
 435         int err;
 436
 437         err = bond_changelink(bond_dev, tb, data);
 438         if (err < 0)
 439                 return err;
 440
 441         return register_netdevice(bond_dev);
 442 }
 443
 444 static size_t bond_get_size(const struct net_device *bond_dev)
 445 {
 446         return nla_total_size(sizeof(u8)) +     /* IFLA_BOND_MODE */
 447                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ACTIVE_SLAVE */
 448                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_MIIMON */
 449                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_UPDELAY */
 450                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_DOWNDELAY */
 451                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_USE_CARRIER */
 452                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_INTERVAL */
 453                                                 /* IFLA_BOND_ARP_IP_TARGET */
 454                 nla_total_size(sizeof(struct nlattr)) +
 455                 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
 456                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_VALIDATE */
 457                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_ARP_ALL_TARGETS */
 458                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_PRIMARY */
 459                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_PRIMARY_RESELECT */
 460                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_FAIL_OVER_MAC */
 461                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_XMIT_HASH_POLICY */
 462                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_RESEND_IGMP */
 463                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_NUM_PEER_NOTIF */
 464                 nla_total_size(sizeof(u8)) +   /* IFLA_BOND_ALL_SLAVES_ACTIVE */
 465                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_MIN_LINKS */
 466                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_LP_INTERVAL */
 467                 nla_total_size(sizeof(u32)) +  /* IFLA_BOND_PACKETS_PER_SLAVE */
 468                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_AD_LACP_RATE */
 469                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_AD_SELECT */
 470                 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
 471                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
 472                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
 473                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
 474                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
 475                 nla_total_size(ETH_ALEN) +    /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
 476                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */
 477                 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */
 478                 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */
 479                 0;
 480 }
 481
 482 static int bond_option_active_slave_get_ifindex(struct bonding *bond)
 483 {
 484         const struct net_device *slave;
 485         int ifindex;
 486
 487         rcu_read_lock();
 488         slave = bond_option_active_slave_get_rcu(bond);
 489         ifindex = slave ? slave->ifindex : 0;
 490         rcu_read_unlock();
 491         return ifindex;
 492 }
 493
 494 static int bond_fill_info(struct sk_buff *skb,
 495                           const struct net_device *bond_dev)
 496 {
 497         struct bonding *bond = netdev_priv(bond_dev);
 498         unsigned int packets_per_slave;
 499         int ifindex, i, targets_added;
 500         struct nlattr *targets;
 501         struct slave *primary;
 502
 503         if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
 504                 goto nla_put_failure;
 505
 506         ifindex = bond_option_active_slave_get_ifindex(bond);
 507         if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))
 508                 goto nla_put_failure;
 509
 510         if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
 511                 goto nla_put_failure;
 512
 513         if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
 514                         bond->params.updelay * bond->params.miimon))
 515                 goto nla_put_failure;
 516
 517         if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
 518                         bond->params.downdelay * bond->params.miimon))
 519                 goto nla_put_failure;
 520
 521         if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
 522                 goto nla_put_failure;
 523
 524         if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
 525                 goto nla_put_failure;
 526
 527         targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
 528         if (!targets)
 529                 goto nla_put_failure;
 530
 531         targets_added = 0;
 532         for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
 533                 if (bond->params.arp_targets[i]) {
 534                         nla_put_be32(skb, i, bond->params.arp_targets[i]);
 535                         targets_added = 1;
 536                 }
 537         }
 538
 539         if (targets_added)
 540                 nla_nest_end(skb, targets);
 541         else
 542                 nla_nest_cancel(skb, targets);
 543
 544         if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
 545                 goto nla_put_failure;
 546
 547         if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
 548                         bond->params.arp_all_targets))
 549                 goto nla_put_failure;
 550
 551         primary = rtnl_dereference(bond->primary_slave);
 552         if (primary &&
 553             nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex))
 554                 goto nla_put_failure;
 555
 556         if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
 557                        bond->params.primary_reselect))
 558                 goto nla_put_failure;
 559
 560         if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
 561                        bond->params.fail_over_mac))
 562                 goto nla_put_failure;
 563
 564         if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
 565                        bond->params.xmit_policy))
 566                 goto nla_put_failure;
 567
 568         if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
 569                         bond->params.resend_igmp))
 570                 goto nla_put_failure;
 571
 572         if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
 573                        bond->params.num_peer_notif))
 574                 goto nla_put_failure;
 575
 576         if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
 577                        bond->params.all_slaves_active))
 578                 goto nla_put_failure;
 579
 580         if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
 581                         bond->params.min_links))
 582                 goto nla_put_failure;
 583
 584         if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
 585                         bond->params.lp_interval))
 586                 goto nla_put_failure;
 587
 588         packets_per_slave = bond->params.packets_per_slave;
 589         if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
 590                         packets_per_slave))
 591                 goto nla_put_failure;
 592
 593         if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
 594                        bond->params.lacp_fast))
 595                 goto nla_put_failure;
 596
 597         if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
 598                        bond->params.ad_select))
 599                 goto nla_put_failure;
 600
 601         if (BOND_MODE(bond) == BOND_MODE_8023AD) {
 602                 struct ad_info info;
 603
 604                 if (capable(CAP_NET_ADMIN)) {
 605                         if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO,
 606                                         bond->params.ad_actor_sys_prio))
 607                                 goto nla_put_failure;
 608
 609                         if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY,
 610                                         bond->params.ad_user_port_key))
 611                                 goto nla_put_failure;
 612
 613                         if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM,
 614                                     sizeof(bond->params.ad_actor_system),
 615                                     &bond->params.ad_actor_system))
 616                                 goto nla_put_failure;
 617                 }
 618                 if (!bond_3ad_get_active_agg_info(bond, &info)) {
 619                         struct nlattr *nest;
 620
 621                         nest = nla_nest_start(skb, IFLA_BOND_AD_INFO);
 622                         if (!nest)
 623                                 goto nla_put_failure;
 624
 625                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
 626                                         info.aggregator_id))
 627                                 goto nla_put_failure;
 628                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
 629                                         info.ports))
 630                                 goto nla_put_failure;
 631                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
 632                                         info.actor_key))
 633                                 goto nla_put_failure;
 634                         if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
 635                                         info.partner_key))
 636                                 goto nla_put_failure;
 637                         if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
 638                                     sizeof(info.partner_system),
 639                                     &info.partner_system))
 640                                 goto nla_put_failure;
 641
 642                         nla_nest_end(skb, nest);
 643                 }
 644         }
 645
 646         return 0;
 647
 648 nla_put_failure:
 649         return -EMSGSIZE;
 650 }
 651
 652 struct rtnl_link_ops bond_link_ops __read_mostly = {
 653         .kind                   = "bond",
 654         .priv_size              = sizeof(struct bonding),
 655         .setup                  = bond_setup,
 656         .maxtype                = IFLA_BOND_MAX,
 657         .policy                 = bond_policy,
 658         .validate               = bond_validate,
 659         .newlink                = bond_newlink,
 660         .changelink             = bond_changelink,
 661         .get_size               = bond_get_size,
 662         .fill_info              = bond_fill_info,
 663         .get_num_tx_queues      = bond_get_num_tx_queues,
 664         .get_num_rx_queues      = bond_get_num_tx_queues, /* Use the same number
 665                                                              as for TX queues */
 666         .slave_maxtype          = IFLA_BOND_SLAVE_MAX,
 667         .slave_policy           = bond_slave_policy,
 668         .slave_changelink       = bond_slave_changelink,
 669         .get_slave_size         = bond_get_slave_size,
 670         .fill_slave_info        = bond_fill_slave_info,
 671 };
 672
 673 int __init bond_netlink_init(void)
 674 {
 675         return rtnl_link_register(&bond_link_ops);
 676 }
 677
 678 void bond_netlink_fini(void)
 679 {
 680         rtnl_link_unregister(&bond_link_ops);
 681 }
 682
 683 MODULE_ALIAS_RTNL_LINK("bond");