net/batman-adv/netlink.c

   1 /* Copyright (C) 2016 B.A.T.M.A.N. contributors:
   2  *
   3  * Matthias Schiffer
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 2 of the GNU General Public
   7  * License as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "netlink.h"
  19 #include "main.h"
  20
  21 #include <linux/atomic.h>
  22 #include <linux/byteorder/generic.h>
  23 #include <linux/errno.h>
  24 #include <linux/fs.h>
  25 #include <linux/genetlink.h>
  26 #include <linux/if_ether.h>
  27 #include <linux/init.h>
  28 #include <linux/netdevice.h>
  29 #include <linux/netlink.h>
  30 #include <linux/printk.h>
  31 #include <linux/rculist.h>
  32 #include <linux/rcupdate.h>
  33 #include <linux/skbuff.h>
  34 #include <linux/stddef.h>
  35 #include <linux/types.h>
  36 #include <net/genetlink.h>
  37 #include <net/netlink.h>
  38 #include <net/sock.h>
  39 #include <uapi/linux/batman_adv.h>
  40
  41 #include "bat_algo.h"
  42 #include "bridge_loop_avoidance.h"
  43 #include "gateway_client.h"
  44 #include "hard-interface.h"
  45 #include "originator.h"
  46 #include "packet.h"
  47 #include "soft-interface.h"
  48 #include "tp_meter.h"
  49 #include "translation-table.h"
  50
  51 struct genl_family batadv_netlink_family = {
  52         .id = GENL_ID_GENERATE,
  53         .hdrsize = 0,
  54         .name = BATADV_NL_NAME,
  55         .version = 1,
  56         .maxattr = BATADV_ATTR_MAX,
  57         .netnsok = true,
  58 };
  59
  60 /* multicast groups */
  61 enum batadv_netlink_multicast_groups {
  62         BATADV_NL_MCGRP_TPMETER,
  63 };
  64
  65 static const struct genl_multicast_group batadv_netlink_mcgrps[] = {
  66         [BATADV_NL_MCGRP_TPMETER] = { .name = BATADV_NL_MCAST_GROUP_TPMETER },
  67 };
  68
  69 static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
  70         [BATADV_ATTR_VERSION]           = { .type = NLA_STRING },
  71         [BATADV_ATTR_ALGO_NAME]         = { .type = NLA_STRING },
  72         [BATADV_ATTR_MESH_IFINDEX]      = { .type = NLA_U32 },
  73         [BATADV_ATTR_MESH_IFNAME]       = { .type = NLA_STRING },
  74         [BATADV_ATTR_MESH_ADDRESS]      = { .len = ETH_ALEN },
  75         [BATADV_ATTR_HARD_IFINDEX]      = { .type = NLA_U32 },
  76         [BATADV_ATTR_HARD_IFNAME]       = { .type = NLA_STRING },
  77         [BATADV_ATTR_HARD_ADDRESS]      = { .len = ETH_ALEN },
  78         [BATADV_ATTR_ORIG_ADDRESS]      = { .len = ETH_ALEN },
  79         [BATADV_ATTR_TPMETER_RESULT]    = { .type = NLA_U8 },
  80         [BATADV_ATTR_TPMETER_TEST_TIME] = { .type = NLA_U32 },
  81         [BATADV_ATTR_TPMETER_BYTES]     = { .type = NLA_U64 },
  82         [BATADV_ATTR_TPMETER_COOKIE]    = { .type = NLA_U32 },
  83         [BATADV_ATTR_ACTIVE]            = { .type = NLA_FLAG },
  84         [BATADV_ATTR_TT_ADDRESS]        = { .len = ETH_ALEN },
  85         [BATADV_ATTR_TT_TTVN]           = { .type = NLA_U8 },
  86         [BATADV_ATTR_TT_LAST_TTVN]      = { .type = NLA_U8 },
  87         [BATADV_ATTR_TT_CRC32]          = { .type = NLA_U32 },
  88         [BATADV_ATTR_TT_VID]            = { .type = NLA_U16 },
  89         [BATADV_ATTR_TT_FLAGS]          = { .type = NLA_U32 },
  90         [BATADV_ATTR_FLAG_BEST]         = { .type = NLA_FLAG },
  91         [BATADV_ATTR_LAST_SEEN_MSECS]   = { .type = NLA_U32 },
  92         [BATADV_ATTR_NEIGH_ADDRESS]     = { .len = ETH_ALEN },
  93         [BATADV_ATTR_TQ]                = { .type = NLA_U8 },
  94         [BATADV_ATTR_THROUGHPUT]        = { .type = NLA_U32 },
  95         [BATADV_ATTR_BANDWIDTH_UP]      = { .type = NLA_U32 },
  96         [BATADV_ATTR_BANDWIDTH_DOWN]    = { .type = NLA_U32 },
  97         [BATADV_ATTR_ROUTER]            = { .len = ETH_ALEN },
  98         [BATADV_ATTR_BLA_OWN]           = { .type = NLA_FLAG },
  99         [BATADV_ATTR_BLA_ADDRESS]       = { .len = ETH_ALEN },
 100         [BATADV_ATTR_BLA_VID]           = { .type = NLA_U16 },
 101         [BATADV_ATTR_BLA_BACKBONE]      = { .len = ETH_ALEN },
 102         [BATADV_ATTR_BLA_CRC]           = { .type = NLA_U16 },
 103 };
 104
 105 /**
 106  * batadv_netlink_get_ifindex - Extract an interface index from a message
 107  * @nlh: Message header
 108  * @attrtype: Attribute which holds an interface index
 109  *
 110  * Return: interface index, or 0.
 111  */
 112 int
 113 batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype)
 114 {
 115         struct nlattr *attr = nlmsg_find_attr(nlh, GENL_HDRLEN, attrtype);
 116
 117         return attr ? nla_get_u32(attr) : 0;
 118 }
 119
 120 /**
 121  * batadv_netlink_mesh_info_put - fill in generic information about mesh
 122  *  interface
 123  * @msg: netlink message to be sent back
 124  * @soft_iface: interface for which the data should be taken
 125  *
 126  * Return: 0 on success, < 0 on error
 127  */
 128 static int
 129 batadv_netlink_mesh_info_put(struct sk_buff *msg, struct net_device *soft_iface)
 130 {
 131         struct batadv_priv *bat_priv = netdev_priv(soft_iface);
 132         struct batadv_hard_iface *primary_if = NULL;
 133         struct net_device *hard_iface;
 134         int ret = -ENOBUFS;
 135
 136         if (nla_put_string(msg, BATADV_ATTR_VERSION, BATADV_SOURCE_VERSION) ||
 137             nla_put_string(msg, BATADV_ATTR_ALGO_NAME,
 138                            bat_priv->algo_ops->name) ||
 139             nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, soft_iface->ifindex) ||
 140             nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, soft_iface->name) ||
 141             nla_put(msg, BATADV_ATTR_MESH_ADDRESS, ETH_ALEN,
 142                     soft_iface->dev_addr) ||
 143             nla_put_u8(msg, BATADV_ATTR_TT_TTVN,
 144                        (u8)atomic_read(&bat_priv->tt.vn)))
 145                 goto out;
 146
 147 #ifdef CONFIG_BATMAN_ADV_BLA
 148         if (nla_put_u16(msg, BATADV_ATTR_BLA_CRC,
 149                         ntohs(bat_priv->bla.claim_dest.group)))
 150                 goto out;
 151 #endif
 152
 153         primary_if = batadv_primary_if_get_selected(bat_priv);
 154         if (primary_if && primary_if->if_status == BATADV_IF_ACTIVE) {
 155                 hard_iface = primary_if->net_dev;
 156
 157                 if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
 158                                 hard_iface->ifindex) ||
 159                     nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
 160                                    hard_iface->name) ||
 161                     nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
 162                             hard_iface->dev_addr))
 163                         goto out;
 164         }
 165
 166         ret = 0;
 167
 168  out:
 169         if (primary_if)
 170                 batadv_hardif_put(primary_if);
 171
 172         return ret;
 173 }
 174
 175 /**
 176  * batadv_netlink_get_mesh_info - handle incoming BATADV_CMD_GET_MESH_INFO
 177  *  netlink request
 178  * @skb: received netlink message
 179  * @info: receiver information
 180  *
 181  * Return: 0 on success, < 0 on error
 182  */
 183 static int
 184 batadv_netlink_get_mesh_info(struct sk_buff *skb, struct genl_info *info)
 185 {
 186         struct net *net = genl_info_net(info);
 187         struct net_device *soft_iface;
 188         struct sk_buff *msg = NULL;
 189         void *msg_head;
 190         int ifindex;
 191         int ret;
 192
 193         if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
 194                 return -EINVAL;
 195
 196         ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
 197         if (!ifindex)
 198                 return -EINVAL;
 199
 200         soft_iface = dev_get_by_index(net, ifindex);
 201         if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
 202                 ret = -ENODEV;
 203                 goto out;
 204         }
 205
 206         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 207         if (!msg) {
 208                 ret = -ENOMEM;
 209                 goto out;
 210         }
 211
 212         msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
 213                                &batadv_netlink_family, 0,
 214                                BATADV_CMD_GET_MESH_INFO);
 215         if (!msg_head) {
 216                 ret = -ENOBUFS;
 217                 goto out;
 218         }
 219
 220         ret = batadv_netlink_mesh_info_put(msg, soft_iface);
 221
 222  out:
 223         if (soft_iface)
 224                 dev_put(soft_iface);
 225
 226         if (ret) {
 227                 if (msg)
 228                         nlmsg_free(msg);
 229                 return ret;
 230         }
 231
 232         genlmsg_end(msg, msg_head);
 233         return genlmsg_reply(msg, info);
 234 }
 235
 236 /**
 237  * batadv_netlink_tp_meter_put - Fill information of started tp_meter session
 238  * @msg: netlink message to be sent back
 239  * @cookie: tp meter session cookie
 240  *
 241  *  Return: 0 on success, < 0 on error
 242  */
 243 static int
 244 batadv_netlink_tp_meter_put(struct sk_buff *msg, u32 cookie)
 245 {
 246         if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
 247                 return -ENOBUFS;
 248
 249         return 0;
 250 }
 251
 252 /**
 253  * batadv_netlink_tpmeter_notify - send tp_meter result via netlink to client
 254  * @bat_priv: the bat priv with all the soft interface information
 255  * @dst: destination of tp_meter session
 256  * @result: reason for tp meter session stop
 257  * @test_time: total time ot the tp_meter session
 258  * @total_bytes: bytes acked to the receiver
 259  * @cookie: cookie of tp_meter session
 260  *
 261  * Return: 0 on success, < 0 on error
 262  */
 263 int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst,
 264                                   u8 result, u32 test_time, u64 total_bytes,
 265                                   u32 cookie)
 266 {
 267         struct sk_buff *msg;
 268         void *hdr;
 269         int ret;
 270
 271         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 272         if (!msg)
 273                 return -ENOMEM;
 274
 275         hdr = genlmsg_put(msg, 0, 0, &batadv_netlink_family, 0,
 276                           BATADV_CMD_TP_METER);
 277         if (!hdr) {
 278                 ret = -ENOBUFS;
 279                 goto err_genlmsg;
 280         }
 281
 282         if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
 283                 goto nla_put_failure;
 284
 285         if (nla_put_u32(msg, BATADV_ATTR_TPMETER_TEST_TIME, test_time))
 286                 goto nla_put_failure;
 287
 288         if (nla_put_u64_64bit(msg, BATADV_ATTR_TPMETER_BYTES, total_bytes,
 289                               BATADV_ATTR_PAD))
 290                 goto nla_put_failure;
 291
 292         if (nla_put_u8(msg, BATADV_ATTR_TPMETER_RESULT, result))
 293                 goto nla_put_failure;
 294
 295         if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, dst))
 296                 goto nla_put_failure;
 297
 298         genlmsg_end(msg, hdr);
 299
 300         genlmsg_multicast_netns(&batadv_netlink_family,
 301                                 dev_net(bat_priv->soft_iface), msg, 0,
 302                                 BATADV_NL_MCGRP_TPMETER, GFP_KERNEL);
 303
 304         return 0;
 305
 306 nla_put_failure:
 307         genlmsg_cancel(msg, hdr);
 308         ret = -EMSGSIZE;
 309
 310 err_genlmsg:
 311         nlmsg_free(msg);
 312         return ret;
 313 }
 314
 315 /**
 316  * batadv_netlink_tp_meter_start - Start a new tp_meter session
 317  * @skb: received netlink message
 318  * @info: receiver information
 319  *
 320  * Return: 0 on success, < 0 on error
 321  */
 322 static int
 323 batadv_netlink_tp_meter_start(struct sk_buff *skb, struct genl_info *info)
 324 {
 325         struct net *net = genl_info_net(info);
 326         struct net_device *soft_iface;
 327         struct batadv_priv *bat_priv;
 328         struct sk_buff *msg = NULL;
 329         u32 test_length;
 330         void *msg_head;
 331         int ifindex;
 332         u32 cookie;
 333         u8 *dst;
 334         int ret;
 335
 336         if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
 337                 return -EINVAL;
 338
 339         if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
 340                 return -EINVAL;
 341
 342         if (!info->attrs[BATADV_ATTR_TPMETER_TEST_TIME])
 343                 return -EINVAL;
 344
 345         ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
 346         if (!ifindex)
 347                 return -EINVAL;
 348
 349         dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
 350
 351         test_length = nla_get_u32(info->attrs[BATADV_ATTR_TPMETER_TEST_TIME]);
 352
 353         soft_iface = dev_get_by_index(net, ifindex);
 354         if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
 355                 ret = -ENODEV;
 356                 goto out;
 357         }
 358
 359         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 360         if (!msg) {
 361                 ret = -ENOMEM;
 362                 goto out;
 363         }
 364
 365         msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
 366                                &batadv_netlink_family, 0,
 367                                BATADV_CMD_TP_METER);
 368         if (!msg_head) {
 369                 ret = -ENOBUFS;
 370                 goto out;
 371         }
 372
 373         bat_priv = netdev_priv(soft_iface);
 374         batadv_tp_start(bat_priv, dst, test_length, &cookie);
 375
 376         ret = batadv_netlink_tp_meter_put(msg, cookie);
 377
 378  out:
 379         if (soft_iface)
 380                 dev_put(soft_iface);
 381
 382         if (ret) {
 383                 if (msg)
 384                         nlmsg_free(msg);
 385                 return ret;
 386         }
 387
 388         genlmsg_end(msg, msg_head);
 389         return genlmsg_reply(msg, info);
 390 }
 391
 392 /**
 393  * batadv_netlink_tp_meter_start - Cancel a running tp_meter session
 394  * @skb: received netlink message
 395  * @info: receiver information
 396  *
 397  * Return: 0 on success, < 0 on error
 398  */
 399 static int
 400 batadv_netlink_tp_meter_cancel(struct sk_buff *skb, struct genl_info *info)
 401 {
 402         struct net *net = genl_info_net(info);
 403         struct net_device *soft_iface;
 404         struct batadv_priv *bat_priv;
 405         int ifindex;
 406         u8 *dst;
 407         int ret = 0;
 408
 409         if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
 410                 return -EINVAL;
 411
 412         if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
 413                 return -EINVAL;
 414
 415         ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
 416         if (!ifindex)
 417                 return -EINVAL;
 418
 419         dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
 420
 421         soft_iface = dev_get_by_index(net, ifindex);
 422         if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
 423                 ret = -ENODEV;
 424                 goto out;
 425         }
 426
 427         bat_priv = netdev_priv(soft_iface);
 428         batadv_tp_stop(bat_priv, dst, BATADV_TP_REASON_CANCEL);
 429
 430 out:
 431         if (soft_iface)
 432                 dev_put(soft_iface);
 433
 434         return ret;
 435 }
 436
 437 /**
 438  * batadv_netlink_dump_hardif_entry - Dump one hard interface into a message
 439  * @msg: Netlink message to dump into
 440  * @portid: Port making netlink request
 441  * @seq: Sequence number of netlink message
 442  * @hard_iface: Hard interface to dump
 443  *
 444  * Return: error code, or 0 on success
 445  */
 446 static int
 447 batadv_netlink_dump_hardif_entry(struct sk_buff *msg, u32 portid, u32 seq,
 448                                  struct batadv_hard_iface *hard_iface)
 449 {
 450         struct net_device *net_dev = hard_iface->net_dev;
 451         void *hdr;
 452
 453         hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
 454                           BATADV_CMD_GET_HARDIFS);
 455         if (!hdr)
 456                 return -EMSGSIZE;
 457
 458         if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
 459                         net_dev->ifindex) ||
 460             nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
 461                            net_dev->name) ||
 462             nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
 463                     net_dev->dev_addr))
 464                 goto nla_put_failure;
 465
 466         if (hard_iface->if_status == BATADV_IF_ACTIVE) {
 467                 if (nla_put_flag(msg, BATADV_ATTR_ACTIVE))
 468                         goto nla_put_failure;
 469         }
 470
 471         genlmsg_end(msg, hdr);
 472         return 0;
 473
 474  nla_put_failure:
 475         genlmsg_cancel(msg, hdr);
 476         return -EMSGSIZE;
 477 }
 478
 479 /**
 480  * batadv_netlink_dump_hardifs - Dump all hard interface into a messages
 481  * @msg: Netlink message to dump into
 482  * @cb: Parameters from query
 483  *
 484  * Return: error code, or length of reply message on success
 485  */
 486 static int
 487 batadv_netlink_dump_hardifs(struct sk_buff *msg, struct netlink_callback *cb)
 488 {
 489         struct net *net = sock_net(cb->skb->sk);
 490         struct net_device *soft_iface;
 491         struct batadv_hard_iface *hard_iface;
 492         int ifindex;
 493         int portid = NETLINK_CB(cb->skb).portid;
 494         int seq = cb->nlh->nlmsg_seq;
 495         int skip = cb->args[0];
 496         int i = 0;
 497
 498         ifindex = batadv_netlink_get_ifindex(cb->nlh,
 499                                              BATADV_ATTR_MESH_IFINDEX);
 500         if (!ifindex)
 501                 return -EINVAL;
 502
 503         soft_iface = dev_get_by_index(net, ifindex);
 504         if (!soft_iface)
 505                 return -ENODEV;
 506
 507         if (!batadv_softif_is_valid(soft_iface)) {
 508                 dev_put(soft_iface);
 509                 return -ENODEV;
 510         }
 511
 512         rcu_read_lock();
 513
 514         list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
 515                 if (hard_iface->soft_iface != soft_iface)
 516                         continue;
 517
 518                 if (i++ < skip)
 519                         continue;
 520
 521                 if (batadv_netlink_dump_hardif_entry(msg, portid, seq,
 522                                                      hard_iface)) {
 523                         i--;
 524                         break;
 525                 }
 526         }
 527
 528         rcu_read_unlock();
 529
 530         dev_put(soft_iface);
 531
 532         cb->args[0] = i;
 533
 534         return msg->len;
 535 }
 536
 537 static struct genl_ops batadv_netlink_ops[] = {
 538         {
 539                 .cmd = BATADV_CMD_GET_MESH_INFO,
 540                 .flags = GENL_ADMIN_PERM,
 541                 .policy = batadv_netlink_policy,
 542                 .doit = batadv_netlink_get_mesh_info,
 543         },
 544         {
 545                 .cmd = BATADV_CMD_TP_METER,
 546                 .flags = GENL_ADMIN_PERM,
 547                 .policy = batadv_netlink_policy,
 548                 .doit = batadv_netlink_tp_meter_start,
 549         },
 550         {
 551                 .cmd = BATADV_CMD_TP_METER_CANCEL,
 552                 .flags = GENL_ADMIN_PERM,
 553                 .policy = batadv_netlink_policy,
 554                 .doit = batadv_netlink_tp_meter_cancel,
 555         },
 556         {
 557                 .cmd = BATADV_CMD_GET_ROUTING_ALGOS,
 558                 .flags = GENL_ADMIN_PERM,
 559                 .policy = batadv_netlink_policy,
 560                 .dumpit = batadv_algo_dump,
 561         },
 562         {
 563                 .cmd = BATADV_CMD_GET_HARDIFS,
 564                 .flags = GENL_ADMIN_PERM,
 565                 .policy = batadv_netlink_policy,
 566                 .dumpit = batadv_netlink_dump_hardifs,
 567         },
 568         {
 569                 .cmd = BATADV_CMD_GET_TRANSTABLE_LOCAL,
 570                 .flags = GENL_ADMIN_PERM,
 571                 .policy = batadv_netlink_policy,
 572                 .dumpit = batadv_tt_local_dump,
 573         },
 574         {
 575                 .cmd = BATADV_CMD_GET_TRANSTABLE_GLOBAL,
 576                 .flags = GENL_ADMIN_PERM,
 577                 .policy = batadv_netlink_policy,
 578                 .dumpit = batadv_tt_global_dump,
 579         },
 580         {
 581                 .cmd = BATADV_CMD_GET_ORIGINATORS,
 582                 .flags = GENL_ADMIN_PERM,
 583                 .policy = batadv_netlink_policy,
 584                 .dumpit = batadv_orig_dump,
 585         },
 586         {
 587                 .cmd = BATADV_CMD_GET_NEIGHBORS,
 588                 .flags = GENL_ADMIN_PERM,
 589                 .policy = batadv_netlink_policy,
 590                 .dumpit = batadv_hardif_neigh_dump,
 591         },
 592         {
 593                 .cmd = BATADV_CMD_GET_GATEWAYS,
 594                 .flags = GENL_ADMIN_PERM,
 595                 .policy = batadv_netlink_policy,
 596                 .dumpit = batadv_gw_dump,
 597         },
 598         {
 599                 .cmd = BATADV_CMD_GET_BLA_CLAIM,
 600                 .flags = GENL_ADMIN_PERM,
 601                 .policy = batadv_netlink_policy,
 602                 .dumpit = batadv_bla_claim_dump,
 603         },
 604         {
 605                 .cmd = BATADV_CMD_GET_BLA_BACKBONE,
 606                 .flags = GENL_ADMIN_PERM,
 607                 .policy = batadv_netlink_policy,
 608                 .dumpit = batadv_bla_backbone_dump,
 609         },
 610
 611 };
 612
 613 /**
 614  * batadv_netlink_register - register batadv genl netlink family
 615  */
 616 void __init batadv_netlink_register(void)
 617 {
 618         int ret;
 619
 620         ret = genl_register_family_with_ops_groups(&batadv_netlink_family,
 621                                                    batadv_netlink_ops,
 622                                                    batadv_netlink_mcgrps);
 623         if (ret)
 624                 pr_warn("unable to register netlink family");
 625 }
 626
 627 /**
 628  * batadv_netlink_unregister - unregister batadv genl netlink family
 629  */
 630 void batadv_netlink_unregister(void)
 631 {
 632         genl_unregister_family(&batadv_netlink_family);
 633 }