net/batman-adv/netlink.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (C) 2016-2018  B.A.T.M.A.N. contributors:
   3  *
   4  * Matthias Schiffer
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of version 2 of the GNU General Public
   8  * License as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include "netlink.h"
  20 #include "main.h"
  21
  22 #include <linux/atomic.h>
  23 #include <linux/byteorder/generic.h>
  24 #include <linux/cache.h>
  25 #include <linux/errno.h>
  26 #include <linux/export.h>
  27 #include <linux/genetlink.h>
  28 #include <linux/gfp.h>
  29 #include <linux/if_ether.h>
  30 #include <linux/init.h>
  31 #include <linux/kernel.h>
  32 #include <linux/netdevice.h>
  33 #include <linux/netlink.h>
  34 #include <linux/printk.h>
  35 #include <linux/rculist.h>
  36 #include <linux/rcupdate.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/stddef.h>
  39 #include <linux/types.h>
  40 #include <net/genetlink.h>
  41 #include <net/netlink.h>
  42 #include <net/sock.h>
  43 #include <uapi/linux/batadv_packet.h>
  44 #include <uapi/linux/batman_adv.h>
  45
  46 #include "bat_algo.h"
  47 #include "bridge_loop_avoidance.h"
  48 #include "distributed-arp-table.h"
  49 #include "gateway_client.h"
  50 #include "hard-interface.h"
  51 #include "multicast.h"
  52 #include "originator.h"
  53 #include "soft-interface.h"
  54 #include "tp_meter.h"
  55 #include "translation-table.h"
  56
  57 struct genl_family batadv_netlink_family;
  58
  59 /* multicast groups */
  60 enum batadv_netlink_multicast_groups {
  61         BATADV_NL_MCGRP_TPMETER,
  62 };
  63
  64 static const struct genl_multicast_group batadv_netlink_mcgrps[] = {
  65         [BATADV_NL_MCGRP_TPMETER] = { .name = BATADV_NL_MCAST_GROUP_TPMETER },
  66 };
  67
  68 static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
  69         [BATADV_ATTR_VERSION]                   = { .type = NLA_STRING },
  70         [BATADV_ATTR_ALGO_NAME]                 = { .type = NLA_STRING },
  71         [BATADV_ATTR_MESH_IFINDEX]              = { .type = NLA_U32 },
  72         [BATADV_ATTR_MESH_IFNAME]               = { .type = NLA_STRING },
  73         [BATADV_ATTR_MESH_ADDRESS]              = { .len = ETH_ALEN },
  74         [BATADV_ATTR_HARD_IFINDEX]              = { .type = NLA_U32 },
  75         [BATADV_ATTR_HARD_IFNAME]               = { .type = NLA_STRING },
  76         [BATADV_ATTR_HARD_ADDRESS]              = { .len = ETH_ALEN },
  77         [BATADV_ATTR_ORIG_ADDRESS]              = { .len = ETH_ALEN },
  78         [BATADV_ATTR_TPMETER_RESULT]            = { .type = NLA_U8 },
  79         [BATADV_ATTR_TPMETER_TEST_TIME]         = { .type = NLA_U32 },
  80         [BATADV_ATTR_TPMETER_BYTES]             = { .type = NLA_U64 },
  81         [BATADV_ATTR_TPMETER_COOKIE]            = { .type = NLA_U32 },
  82         [BATADV_ATTR_ACTIVE]                    = { .type = NLA_FLAG },
  83         [BATADV_ATTR_TT_ADDRESS]                = { .len = ETH_ALEN },
  84         [BATADV_ATTR_TT_TTVN]                   = { .type = NLA_U8 },
  85         [BATADV_ATTR_TT_LAST_TTVN]              = { .type = NLA_U8 },
  86         [BATADV_ATTR_TT_CRC32]                  = { .type = NLA_U32 },
  87         [BATADV_ATTR_TT_VID]                    = { .type = NLA_U16 },
  88         [BATADV_ATTR_TT_FLAGS]                  = { .type = NLA_U32 },
  89         [BATADV_ATTR_FLAG_BEST]                 = { .type = NLA_FLAG },
  90         [BATADV_ATTR_LAST_SEEN_MSECS]           = { .type = NLA_U32 },
  91         [BATADV_ATTR_NEIGH_ADDRESS]             = { .len = ETH_ALEN },
  92         [BATADV_ATTR_TQ]                        = { .type = NLA_U8 },
  93         [BATADV_ATTR_THROUGHPUT]                = { .type = NLA_U32 },
  94         [BATADV_ATTR_BANDWIDTH_UP]              = { .type = NLA_U32 },
  95         [BATADV_ATTR_BANDWIDTH_DOWN]            = { .type = NLA_U32 },
  96         [BATADV_ATTR_ROUTER]                    = { .len = ETH_ALEN },
  97         [BATADV_ATTR_BLA_OWN]                   = { .type = NLA_FLAG },
  98         [BATADV_ATTR_BLA_ADDRESS]               = { .len = ETH_ALEN },
  99         [BATADV_ATTR_BLA_VID]                   = { .type = NLA_U16 },
 100         [BATADV_ATTR_BLA_BACKBONE]              = { .len = ETH_ALEN },
 101         [BATADV_ATTR_BLA_CRC]                   = { .type = NLA_U16 },
 102         [BATADV_ATTR_DAT_CACHE_IP4ADDRESS]      = { .type = NLA_U32 },
 103         [BATADV_ATTR_DAT_CACHE_HWADDRESS]       = { .len = ETH_ALEN },
 104         [BATADV_ATTR_DAT_CACHE_VID]             = { .type = NLA_U16 },
 105         [BATADV_ATTR_MCAST_FLAGS]               = { .type = NLA_U32 },
 106         [BATADV_ATTR_MCAST_FLAGS_PRIV]          = { .type = NLA_U32 },
 107 };
 108
 109 /**
 110  * batadv_netlink_get_ifindex() - Extract an interface index from a message
 111  * @nlh: Message header
 112  * @attrtype: Attribute which holds an interface index
 113  *
 114  * Return: interface index, or 0.
 115  */
 116 int
 117 batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype)
 118 {
 119         struct nlattr *attr = nlmsg_find_attr(nlh, GENL_HDRLEN, attrtype);
 120
 121         return attr ? nla_get_u32(attr) : 0;
 122 }
 123
 124 /**
 125  * batadv_netlink_mesh_info_put() - fill in generic information about mesh
 126  *  interface
 127  * @msg: netlink message to be sent back
 128  * @soft_iface: interface for which the data should be taken
 129  *
 130  * Return: 0 on success, < 0 on error
 131  */
 132 static int
 133 batadv_netlink_mesh_info_put(struct sk_buff *msg, struct net_device *soft_iface)
 134 {
 135         struct batadv_priv *bat_priv = netdev_priv(soft_iface);
 136         struct batadv_hard_iface *primary_if = NULL;
 137         struct net_device *hard_iface;
 138         int ret = -ENOBUFS;
 139
 140         if (nla_put_string(msg, BATADV_ATTR_VERSION, BATADV_SOURCE_VERSION) ||
 141             nla_put_string(msg, BATADV_ATTR_ALGO_NAME,
 142                            bat_priv->algo_ops->name) ||
 143             nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, soft_iface->ifindex) ||
 144             nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, soft_iface->name) ||
 145             nla_put(msg, BATADV_ATTR_MESH_ADDRESS, ETH_ALEN,
 146                     soft_iface->dev_addr) ||
 147             nla_put_u8(msg, BATADV_ATTR_TT_TTVN,
 148                        (u8)atomic_read(&bat_priv->tt.vn)))
 149                 goto out;
 150
 151 #ifdef CONFIG_BATMAN_ADV_BLA
 152         if (nla_put_u16(msg, BATADV_ATTR_BLA_CRC,
 153                         ntohs(bat_priv->bla.claim_dest.group)))
 154                 goto out;
 155 #endif
 156
 157         if (batadv_mcast_mesh_info_put(msg, bat_priv))
 158                 goto out;
 159
 160         primary_if = batadv_primary_if_get_selected(bat_priv);
 161         if (primary_if && primary_if->if_status == BATADV_IF_ACTIVE) {
 162                 hard_iface = primary_if->net_dev;
 163
 164                 if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
 165                                 hard_iface->ifindex) ||
 166                     nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
 167                                    hard_iface->name) ||
 168                     nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
 169                             hard_iface->dev_addr))
 170                         goto out;
 171         }
 172
 173         ret = 0;
 174
 175  out:
 176         if (primary_if)
 177                 batadv_hardif_put(primary_if);
 178
 179         return ret;
 180 }
 181
 182 /**
 183  * batadv_netlink_get_mesh_info() - handle incoming BATADV_CMD_GET_MESH_INFO
 184  *  netlink request
 185  * @skb: received netlink message
 186  * @info: receiver information
 187  *
 188  * Return: 0 on success, < 0 on error
 189  */
 190 static int
 191 batadv_netlink_get_mesh_info(struct sk_buff *skb, struct genl_info *info)
 192 {
 193         struct net *net = genl_info_net(info);
 194         struct net_device *soft_iface;
 195         struct sk_buff *msg = NULL;
 196         void *msg_head;
 197         int ifindex;
 198         int ret;
 199
 200         if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
 201                 return -EINVAL;
 202
 203         ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
 204         if (!ifindex)
 205                 return -EINVAL;
 206
 207         soft_iface = dev_get_by_index(net, ifindex);
 208         if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
 209                 ret = -ENODEV;
 210                 goto out;
 211         }
 212
 213         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 214         if (!msg) {
 215                 ret = -ENOMEM;
 216                 goto out;
 217         }
 218
 219         msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
 220                                &batadv_netlink_family, 0,
 221                                BATADV_CMD_GET_MESH_INFO);
 222         if (!msg_head) {
 223                 ret = -ENOBUFS;
 224                 goto out;
 225         }
 226
 227         ret = batadv_netlink_mesh_info_put(msg, soft_iface);
 228
 229  out:
 230         if (soft_iface)
 231                 dev_put(soft_iface);
 232
 233         if (ret) {
 234                 if (msg)
 235                         nlmsg_free(msg);
 236                 return ret;
 237         }
 238
 239         genlmsg_end(msg, msg_head);
 240         return genlmsg_reply(msg, info);
 241 }
 242
 243 /**
 244  * batadv_netlink_tp_meter_put() - Fill information of started tp_meter session
 245  * @msg: netlink message to be sent back
 246  * @cookie: tp meter session cookie
 247  *
 248  *  Return: 0 on success, < 0 on error
 249  */
 250 static int
 251 batadv_netlink_tp_meter_put(struct sk_buff *msg, u32 cookie)
 252 {
 253         if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
 254                 return -ENOBUFS;
 255
 256         return 0;
 257 }
 258
 259 /**
 260  * batadv_netlink_tpmeter_notify() - send tp_meter result via netlink to client
 261  * @bat_priv: the bat priv with all the soft interface information
 262  * @dst: destination of tp_meter session
 263  * @result: reason for tp meter session stop
 264  * @test_time: total time ot the tp_meter session
 265  * @total_bytes: bytes acked to the receiver
 266  * @cookie: cookie of tp_meter session
 267  *
 268  * Return: 0 on success, < 0 on error
 269  */
 270 int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst,
 271                                   u8 result, u32 test_time, u64 total_bytes,
 272                                   u32 cookie)
 273 {
 274         struct sk_buff *msg;
 275         void *hdr;
 276         int ret;
 277
 278         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 279         if (!msg)
 280                 return -ENOMEM;
 281
 282         hdr = genlmsg_put(msg, 0, 0, &batadv_netlink_family, 0,
 283                           BATADV_CMD_TP_METER);
 284         if (!hdr) {
 285                 ret = -ENOBUFS;
 286                 goto err_genlmsg;
 287         }
 288
 289         if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
 290                 goto nla_put_failure;
 291
 292         if (nla_put_u32(msg, BATADV_ATTR_TPMETER_TEST_TIME, test_time))
 293                 goto nla_put_failure;
 294
 295         if (nla_put_u64_64bit(msg, BATADV_ATTR_TPMETER_BYTES, total_bytes,
 296                               BATADV_ATTR_PAD))
 297                 goto nla_put_failure;
 298
 299         if (nla_put_u8(msg, BATADV_ATTR_TPMETER_RESULT, result))
 300                 goto nla_put_failure;
 301
 302         if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, dst))
 303                 goto nla_put_failure;
 304
 305         genlmsg_end(msg, hdr);
 306
 307         genlmsg_multicast_netns(&batadv_netlink_family,
 308                                 dev_net(bat_priv->soft_iface), msg, 0,
 309                                 BATADV_NL_MCGRP_TPMETER, GFP_KERNEL);
 310
 311         return 0;
 312
 313 nla_put_failure:
 314         genlmsg_cancel(msg, hdr);
 315         ret = -EMSGSIZE;
 316
 317 err_genlmsg:
 318         nlmsg_free(msg);
 319         return ret;
 320 }
 321
 322 /**
 323  * batadv_netlink_tp_meter_start() - Start a new tp_meter session
 324  * @skb: received netlink message
 325  * @info: receiver information
 326  *
 327  * Return: 0 on success, < 0 on error
 328  */
 329 static int
 330 batadv_netlink_tp_meter_start(struct sk_buff *skb, struct genl_info *info)
 331 {
 332         struct net *net = genl_info_net(info);
 333         struct net_device *soft_iface;
 334         struct batadv_priv *bat_priv;
 335         struct sk_buff *msg = NULL;
 336         u32 test_length;
 337         void *msg_head;
 338         int ifindex;
 339         u32 cookie;
 340         u8 *dst;
 341         int ret;
 342
 343         if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
 344                 return -EINVAL;
 345
 346         if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
 347                 return -EINVAL;
 348
 349         if (!info->attrs[BATADV_ATTR_TPMETER_TEST_TIME])
 350                 return -EINVAL;
 351
 352         ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
 353         if (!ifindex)
 354                 return -EINVAL;
 355
 356         dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
 357
 358         test_length = nla_get_u32(info->attrs[BATADV_ATTR_TPMETER_TEST_TIME]);
 359
 360         soft_iface = dev_get_by_index(net, ifindex);
 361         if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
 362                 ret = -ENODEV;
 363                 goto out;
 364         }
 365
 366         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 367         if (!msg) {
 368                 ret = -ENOMEM;
 369                 goto out;
 370         }
 371
 372         msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
 373                                &batadv_netlink_family, 0,
 374                                BATADV_CMD_TP_METER);
 375         if (!msg_head) {
 376                 ret = -ENOBUFS;
 377                 goto out;
 378         }
 379
 380         bat_priv = netdev_priv(soft_iface);
 381         batadv_tp_start(bat_priv, dst, test_length, &cookie);
 382
 383         ret = batadv_netlink_tp_meter_put(msg, cookie);
 384
 385  out:
 386         if (soft_iface)
 387                 dev_put(soft_iface);
 388
 389         if (ret) {
 390                 if (msg)
 391                         nlmsg_free(msg);
 392                 return ret;
 393         }
 394
 395         genlmsg_end(msg, msg_head);
 396         return genlmsg_reply(msg, info);
 397 }
 398
 399 /**
 400  * batadv_netlink_tp_meter_start() - Cancel a running tp_meter session
 401  * @skb: received netlink message
 402  * @info: receiver information
 403  *
 404  * Return: 0 on success, < 0 on error
 405  */
 406 static int
 407 batadv_netlink_tp_meter_cancel(struct sk_buff *skb, struct genl_info *info)
 408 {
 409         struct net *net = genl_info_net(info);
 410         struct net_device *soft_iface;
 411         struct batadv_priv *bat_priv;
 412         int ifindex;
 413         u8 *dst;
 414         int ret = 0;
 415
 416         if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
 417                 return -EINVAL;
 418
 419         if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
 420                 return -EINVAL;
 421
 422         ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
 423         if (!ifindex)
 424                 return -EINVAL;
 425
 426         dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
 427
 428         soft_iface = dev_get_by_index(net, ifindex);
 429         if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
 430                 ret = -ENODEV;
 431                 goto out;
 432         }
 433
 434         bat_priv = netdev_priv(soft_iface);
 435         batadv_tp_stop(bat_priv, dst, BATADV_TP_REASON_CANCEL);
 436
 437 out:
 438         if (soft_iface)
 439                 dev_put(soft_iface);
 440
 441         return ret;
 442 }
 443
 444 /**
 445  * batadv_netlink_dump_hardif_entry() - Dump one hard interface into a message
 446  * @msg: Netlink message to dump into
 447  * @portid: Port making netlink request
 448  * @seq: Sequence number of netlink message
 449  * @hard_iface: Hard interface to dump
 450  *
 451  * Return: error code, or 0 on success
 452  */
 453 static int
 454 batadv_netlink_dump_hardif_entry(struct sk_buff *msg, u32 portid, u32 seq,
 455                                  struct batadv_hard_iface *hard_iface)
 456 {
 457         struct net_device *net_dev = hard_iface->net_dev;
 458         void *hdr;
 459
 460         hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
 461                           BATADV_CMD_GET_HARDIFS);
 462         if (!hdr)
 463                 return -EMSGSIZE;
 464
 465         if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
 466                         net_dev->ifindex) ||
 467             nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
 468                            net_dev->name) ||
 469             nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
 470                     net_dev->dev_addr))
 471                 goto nla_put_failure;
 472
 473         if (hard_iface->if_status == BATADV_IF_ACTIVE) {
 474                 if (nla_put_flag(msg, BATADV_ATTR_ACTIVE))
 475                         goto nla_put_failure;
 476         }
 477
 478         genlmsg_end(msg, hdr);
 479         return 0;
 480
 481  nla_put_failure:
 482         genlmsg_cancel(msg, hdr);
 483         return -EMSGSIZE;
 484 }
 485
 486 /**
 487  * batadv_netlink_dump_hardifs() - Dump all hard interface into a messages
 488  * @msg: Netlink message to dump into
 489  * @cb: Parameters from query
 490  *
 491  * Return: error code, or length of reply message on success
 492  */
 493 static int
 494 batadv_netlink_dump_hardifs(struct sk_buff *msg, struct netlink_callback *cb)
 495 {
 496         struct net *net = sock_net(cb->skb->sk);
 497         struct net_device *soft_iface;
 498         struct batadv_hard_iface *hard_iface;
 499         int ifindex;
 500         int portid = NETLINK_CB(cb->skb).portid;
 501         int seq = cb->nlh->nlmsg_seq;
 502         int skip = cb->args[0];
 503         int i = 0;
 504
 505         ifindex = batadv_netlink_get_ifindex(cb->nlh,
 506                                              BATADV_ATTR_MESH_IFINDEX);
 507         if (!ifindex)
 508                 return -EINVAL;
 509
 510         soft_iface = dev_get_by_index(net, ifindex);
 511         if (!soft_iface)
 512                 return -ENODEV;
 513
 514         if (!batadv_softif_is_valid(soft_iface)) {
 515                 dev_put(soft_iface);
 516                 return -ENODEV;
 517         }
 518
 519         rcu_read_lock();
 520
 521         list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
 522                 if (hard_iface->soft_iface != soft_iface)
 523                         continue;
 524
 525                 if (i++ < skip)
 526                         continue;
 527
 528                 if (batadv_netlink_dump_hardif_entry(msg, portid, seq,
 529                                                      hard_iface)) {
 530                         i--;
 531                         break;
 532                 }
 533         }
 534
 535         rcu_read_unlock();
 536
 537         dev_put(soft_iface);
 538
 539         cb->args[0] = i;
 540
 541         return msg->len;
 542 }
 543
 544 static const struct genl_ops batadv_netlink_ops[] = {
 545         {
 546                 .cmd = BATADV_CMD_GET_MESH_INFO,
 547                 .flags = GENL_ADMIN_PERM,
 548                 .policy = batadv_netlink_policy,
 549                 .doit = batadv_netlink_get_mesh_info,
 550         },
 551         {
 552                 .cmd = BATADV_CMD_TP_METER,
 553                 .flags = GENL_ADMIN_PERM,
 554                 .policy = batadv_netlink_policy,
 555                 .doit = batadv_netlink_tp_meter_start,
 556         },
 557         {
 558                 .cmd = BATADV_CMD_TP_METER_CANCEL,
 559                 .flags = GENL_ADMIN_PERM,
 560                 .policy = batadv_netlink_policy,
 561                 .doit = batadv_netlink_tp_meter_cancel,
 562         },
 563         {
 564                 .cmd = BATADV_CMD_GET_ROUTING_ALGOS,
 565                 .flags = GENL_ADMIN_PERM,
 566                 .policy = batadv_netlink_policy,
 567                 .dumpit = batadv_algo_dump,
 568         },
 569         {
 570                 .cmd = BATADV_CMD_GET_HARDIFS,
 571                 .flags = GENL_ADMIN_PERM,
 572                 .policy = batadv_netlink_policy,
 573                 .dumpit = batadv_netlink_dump_hardifs,
 574         },
 575         {
 576                 .cmd = BATADV_CMD_GET_TRANSTABLE_LOCAL,
 577                 .flags = GENL_ADMIN_PERM,
 578                 .policy = batadv_netlink_policy,
 579                 .dumpit = batadv_tt_local_dump,
 580         },
 581         {
 582                 .cmd = BATADV_CMD_GET_TRANSTABLE_GLOBAL,
 583                 .flags = GENL_ADMIN_PERM,
 584                 .policy = batadv_netlink_policy,
 585                 .dumpit = batadv_tt_global_dump,
 586         },
 587         {
 588                 .cmd = BATADV_CMD_GET_ORIGINATORS,
 589                 .flags = GENL_ADMIN_PERM,
 590                 .policy = batadv_netlink_policy,
 591                 .dumpit = batadv_orig_dump,
 592         },
 593         {
 594                 .cmd = BATADV_CMD_GET_NEIGHBORS,
 595                 .flags = GENL_ADMIN_PERM,
 596                 .policy = batadv_netlink_policy,
 597                 .dumpit = batadv_hardif_neigh_dump,
 598         },
 599         {
 600                 .cmd = BATADV_CMD_GET_GATEWAYS,
 601                 .flags = GENL_ADMIN_PERM,
 602                 .policy = batadv_netlink_policy,
 603                 .dumpit = batadv_gw_dump,
 604         },
 605         {
 606                 .cmd = BATADV_CMD_GET_BLA_CLAIM,
 607                 .flags = GENL_ADMIN_PERM,
 608                 .policy = batadv_netlink_policy,
 609                 .dumpit = batadv_bla_claim_dump,
 610         },
 611         {
 612                 .cmd = BATADV_CMD_GET_BLA_BACKBONE,
 613                 .flags = GENL_ADMIN_PERM,
 614                 .policy = batadv_netlink_policy,
 615                 .dumpit = batadv_bla_backbone_dump,
 616         },
 617         {
 618                 .cmd = BATADV_CMD_GET_DAT_CACHE,
 619                 .flags = GENL_ADMIN_PERM,
 620                 .policy = batadv_netlink_policy,
 621                 .dumpit = batadv_dat_cache_dump,
 622         },
 623         {
 624                 .cmd = BATADV_CMD_GET_MCAST_FLAGS,
 625                 .flags = GENL_ADMIN_PERM,
 626                 .policy = batadv_netlink_policy,
 627                 .dumpit = batadv_mcast_flags_dump,
 628         },
 629
 630 };
 631
 632 struct genl_family batadv_netlink_family __ro_after_init = {
 633         .hdrsize = 0,
 634         .name = BATADV_NL_NAME,
 635         .version = 1,
 636         .maxattr = BATADV_ATTR_MAX,
 637         .netnsok = true,
 638         .module = THIS_MODULE,
 639         .ops = batadv_netlink_ops,
 640         .n_ops = ARRAY_SIZE(batadv_netlink_ops),
 641         .mcgrps = batadv_netlink_mcgrps,
 642         .n_mcgrps = ARRAY_SIZE(batadv_netlink_mcgrps),
 643 };
 644
 645 /**
 646  * batadv_netlink_register() - register batadv genl netlink family
 647  */
 648 void __init batadv_netlink_register(void)
 649 {
 650         int ret;
 651
 652         ret = genl_register_family(&batadv_netlink_family);
 653         if (ret)
 654                 pr_warn("unable to register netlink family");
 655 }
 656
 657 /**
 658  * batadv_netlink_unregister() - unregister batadv genl netlink family
 659  */
 660 void batadv_netlink_unregister(void)
 661 {
 662         genl_unregister_family(&batadv_netlink_family);
 663 }