net/bridge/br_netlink.c

   1 /*
   2  *      Bridge netlink control interface
   3  *
   4  *      Authors:
   5  *      Stephen Hemminger               <shemminger@osdl.org>
   6  *
   7  *      This program is free software; you can redistribute it and/or
   8  *      modify it under the terms of the GNU General Public License
   9  *      as published by the Free Software Foundation; either version
  10  *      2 of the License, or (at your option) any later version.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/slab.h>
  15 #include <linux/etherdevice.h>
  16 #include <net/rtnetlink.h>
  17 #include <net/net_namespace.h>
  18 #include <net/sock.h>
  19 #include <uapi/linux/if_bridge.h>
  20
  21 #include "br_private.h"
  22 #include "br_private_stp.h"
  23 #include "br_private_tunnel.h"
  24
  25 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
  26                                 u32 filter_mask)
  27 {
  28         struct net_bridge_vlan *v;
  29         u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
  30         u16 flags, pvid;
  31         int num_vlans = 0;
  32
  33         if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
  34                 return 0;
  35
  36         pvid = br_get_pvid(vg);
  37         /* Count number of vlan infos */
  38         list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
  39                 flags = 0;
  40                 /* only a context, bridge vlan not activated */
  41                 if (!br_vlan_should_use(v))
  42                         continue;
  43                 if (v->vid == pvid)
  44                         flags |= BRIDGE_VLAN_INFO_PVID;
  45
  46                 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
  47                         flags |= BRIDGE_VLAN_INFO_UNTAGGED;
  48
  49                 if (vid_range_start == 0) {
  50                         goto initvars;
  51                 } else if ((v->vid - vid_range_end) == 1 &&
  52                         flags == vid_range_flags) {
  53                         vid_range_end = v->vid;
  54                         continue;
  55                 } else {
  56                         if ((vid_range_end - vid_range_start) > 0)
  57                                 num_vlans += 2;
  58                         else
  59                                 num_vlans += 1;
  60                 }
  61 initvars:
  62                 vid_range_start = v->vid;
  63                 vid_range_end = v->vid;
  64                 vid_range_flags = flags;
  65         }
  66
  67         if (vid_range_start != 0) {
  68                 if ((vid_range_end - vid_range_start) > 0)
  69                         num_vlans += 2;
  70                 else
  71                         num_vlans += 1;
  72         }
  73
  74         return num_vlans;
  75 }
  76
  77 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
  78                                  u32 filter_mask)
  79 {
  80         int num_vlans;
  81
  82         if (!vg)
  83                 return 0;
  84
  85         if (filter_mask & RTEXT_FILTER_BRVLAN)
  86                 return vg->num_vlans;
  87
  88         rcu_read_lock();
  89         num_vlans = __get_num_vlan_infos(vg, filter_mask);
  90         rcu_read_unlock();
  91
  92         return num_vlans;
  93 }
  94
  95 static size_t br_get_link_af_size_filtered(const struct net_device *dev,
  96                                            u32 filter_mask)
  97 {
  98         struct net_bridge_vlan_group *vg = NULL;
  99         struct net_bridge_port *p = NULL;
 100         struct net_bridge *br;
 101         int num_vlan_infos;
 102         size_t vinfo_sz = 0;
 103
 104         rcu_read_lock();
 105         if (br_port_exists(dev)) {
 106                 p = br_port_get_rcu(dev);
 107                 vg = nbp_vlan_group_rcu(p);
 108         } else if (dev->priv_flags & IFF_EBRIDGE) {
 109                 br = netdev_priv(dev);
 110                 vg = br_vlan_group_rcu(br);
 111         }
 112         num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
 113         rcu_read_unlock();
 114
 115         if (p && (p->flags & BR_VLAN_TUNNEL))
 116                 vinfo_sz += br_get_vlan_tunnel_info_size(vg);
 117
 118         /* Each VLAN is returned in bridge_vlan_info along with flags */
 119         vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
 120
 121         return vinfo_sz;
 122 }
 123
 124 static inline size_t br_port_info_size(void)
 125 {
 126         return nla_total_size(1)        /* IFLA_BRPORT_STATE  */
 127                 + nla_total_size(2)     /* IFLA_BRPORT_PRIORITY */
 128                 + nla_total_size(4)     /* IFLA_BRPORT_COST */
 129                 + nla_total_size(1)     /* IFLA_BRPORT_MODE */
 130                 + nla_total_size(1)     /* IFLA_BRPORT_GUARD */
 131                 + nla_total_size(1)     /* IFLA_BRPORT_PROTECT */
 132                 + nla_total_size(1)     /* IFLA_BRPORT_FAST_LEAVE */
 133                 + nla_total_size(1)     /* IFLA_BRPORT_MCAST_TO_UCAST */
 134                 + nla_total_size(1)     /* IFLA_BRPORT_LEARNING */
 135                 + nla_total_size(1)     /* IFLA_BRPORT_UNICAST_FLOOD */
 136                 + nla_total_size(1)     /* IFLA_BRPORT_MCAST_FLOOD */
 137                 + nla_total_size(1)     /* IFLA_BRPORT_BCAST_FLOOD */
 138                 + nla_total_size(1)     /* IFLA_BRPORT_PROXYARP */
 139                 + nla_total_size(1)     /* IFLA_BRPORT_PROXYARP_WIFI */
 140                 + nla_total_size(1)     /* IFLA_BRPORT_VLAN_TUNNEL */
 141                 + nla_total_size(1)     /* IFLA_BRPORT_NEIGH_SUPPRESS */
 142                 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
 143                 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
 144                 + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_DESIGNATED_PORT */
 145                 + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_DESIGNATED_COST */
 146                 + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_ID */
 147                 + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_NO */
 148                 + nla_total_size(sizeof(u8))    /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
 149                 + nla_total_size(sizeof(u8))    /* IFLA_BRPORT_CONFIG_PENDING */
 150                 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
 151                 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
 152                 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
 153 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 154                 + nla_total_size(sizeof(u8))    /* IFLA_BRPORT_MULTICAST_ROUTER */
 155 #endif
 156                 + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_GROUP_FWD_MASK */
 157                 + 0;
 158 }
 159
 160 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
 161 {
 162         return NLMSG_ALIGN(sizeof(struct ifinfomsg))
 163                 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
 164                 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
 165                 + nla_total_size(4) /* IFLA_MASTER */
 166                 + nla_total_size(4) /* IFLA_MTU */
 167                 + nla_total_size(4) /* IFLA_LINK */
 168                 + nla_total_size(1) /* IFLA_OPERSTATE */
 169                 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
 170                 + nla_total_size(br_get_link_af_size_filtered(dev,
 171                                  filter_mask)); /* IFLA_AF_SPEC */
 172 }
 173
 174 static int br_port_fill_attrs(struct sk_buff *skb,
 175                               const struct net_bridge_port *p)
 176 {
 177         u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
 178         u64 timerval;
 179
 180         if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
 181             nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
 182             nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
 183             nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
 184             nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
 185             nla_put_u8(skb, IFLA_BRPORT_PROTECT,
 186                        !!(p->flags & BR_ROOT_BLOCK)) ||
 187             nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
 188                        !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
 189             nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
 190                        !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
 191             nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
 192             nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
 193                        !!(p->flags & BR_FLOOD)) ||
 194             nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
 195                        !!(p->flags & BR_MCAST_FLOOD)) ||
 196             nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD,
 197                        !!(p->flags & BR_BCAST_FLOOD)) ||
 198             nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
 199             nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
 200                        !!(p->flags & BR_PROXYARP_WIFI)) ||
 201             nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
 202                     &p->designated_root) ||
 203             nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
 204                     &p->designated_bridge) ||
 205             nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
 206             nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
 207             nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
 208             nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
 209             nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
 210                        p->topology_change_ack) ||
 211             nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
 212             nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
 213                                                         BR_VLAN_TUNNEL)) ||
 214             nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
 215             nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
 216                        !!(p->flags & BR_NEIGH_SUPPRESS)))
 217                 return -EMSGSIZE;
 218
 219         timerval = br_timer_value(&p->message_age_timer);
 220         if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
 221                               IFLA_BRPORT_PAD))
 222                 return -EMSGSIZE;
 223         timerval = br_timer_value(&p->forward_delay_timer);
 224         if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
 225                               IFLA_BRPORT_PAD))
 226                 return -EMSGSIZE;
 227         timerval = br_timer_value(&p->hold_timer);
 228         if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
 229                               IFLA_BRPORT_PAD))
 230                 return -EMSGSIZE;
 231
 232 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 233         if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
 234                        p->multicast_router))
 235                 return -EMSGSIZE;
 236 #endif
 237
 238         return 0;
 239 }
 240
 241 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
 242                                     u16 vid_end, u16 flags)
 243 {
 244         struct  bridge_vlan_info vinfo;
 245
 246         if ((vid_end - vid_start) > 0) {
 247                 /* add range to skb */
 248                 vinfo.vid = vid_start;
 249                 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
 250                 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
 251                             sizeof(vinfo), &vinfo))
 252                         goto nla_put_failure;
 253
 254                 vinfo.vid = vid_end;
 255                 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
 256                 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
 257                             sizeof(vinfo), &vinfo))
 258                         goto nla_put_failure;
 259         } else {
 260                 vinfo.vid = vid_start;
 261                 vinfo.flags = flags;
 262                 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
 263                             sizeof(vinfo), &vinfo))
 264                         goto nla_put_failure;
 265         }
 266
 267         return 0;
 268
 269 nla_put_failure:
 270         return -EMSGSIZE;
 271 }
 272
 273 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
 274                                          struct net_bridge_vlan_group *vg)
 275 {
 276         struct net_bridge_vlan *v;
 277         u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
 278         u16 flags, pvid;
 279         int err = 0;
 280
 281         /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
 282          * and mark vlan info with begin and end flags
 283          * if vlaninfo represents a range
 284          */
 285         pvid = br_get_pvid(vg);
 286         list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
 287                 flags = 0;
 288                 if (!br_vlan_should_use(v))
 289                         continue;
 290                 if (v->vid == pvid)
 291                         flags |= BRIDGE_VLAN_INFO_PVID;
 292
 293                 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
 294                         flags |= BRIDGE_VLAN_INFO_UNTAGGED;
 295
 296                 if (vid_range_start == 0) {
 297                         goto initvars;
 298                 } else if ((v->vid - vid_range_end) == 1 &&
 299                         flags == vid_range_flags) {
 300                         vid_range_end = v->vid;
 301                         continue;
 302                 } else {
 303                         err = br_fill_ifvlaninfo_range(skb, vid_range_start,
 304                                                        vid_range_end,
 305                                                        vid_range_flags);
 306                         if (err)
 307                                 return err;
 308                 }
 309
 310 initvars:
 311                 vid_range_start = v->vid;
 312                 vid_range_end = v->vid;
 313                 vid_range_flags = flags;
 314         }
 315
 316         if (vid_range_start != 0) {
 317                 /* Call it once more to send any left over vlans */
 318                 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
 319                                                vid_range_end,
 320                                                vid_range_flags);
 321                 if (err)
 322                         return err;
 323         }
 324
 325         return 0;
 326 }
 327
 328 static int br_fill_ifvlaninfo(struct sk_buff *skb,
 329                               struct net_bridge_vlan_group *vg)
 330 {
 331         struct bridge_vlan_info vinfo;
 332         struct net_bridge_vlan *v;
 333         u16 pvid;
 334
 335         pvid = br_get_pvid(vg);
 336         list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
 337                 if (!br_vlan_should_use(v))
 338                         continue;
 339
 340                 vinfo.vid = v->vid;
 341                 vinfo.flags = 0;
 342                 if (v->vid == pvid)
 343                         vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
 344
 345                 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
 346                         vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
 347
 348                 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
 349                             sizeof(vinfo), &vinfo))
 350                         goto nla_put_failure;
 351         }
 352
 353         return 0;
 354
 355 nla_put_failure:
 356         return -EMSGSIZE;
 357 }
 358
 359 /*
 360  * Create one netlink message for one interface
 361  * Contains port and master info as well as carrier and bridge state.
 362  */
 363 static int br_fill_ifinfo(struct sk_buff *skb,
 364                           struct net_bridge_port *port,
 365                           u32 pid, u32 seq, int event, unsigned int flags,
 366                           u32 filter_mask, const struct net_device *dev)
 367 {
 368         struct net_bridge *br;
 369         struct ifinfomsg *hdr;
 370         struct nlmsghdr *nlh;
 371         u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
 372
 373         if (port)
 374                 br = port->br;
 375         else
 376                 br = netdev_priv(dev);
 377
 378         br_debug(br, "br_fill_info event %d port %s master %s\n",
 379                      event, dev->name, br->dev->name);
 380
 381         nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
 382         if (nlh == NULL)
 383                 return -EMSGSIZE;
 384
 385         hdr = nlmsg_data(nlh);
 386         hdr->ifi_family = AF_BRIDGE;
 387         hdr->__ifi_pad = 0;
 388         hdr->ifi_type = dev->type;
 389         hdr->ifi_index = dev->ifindex;
 390         hdr->ifi_flags = dev_get_flags(dev);
 391         hdr->ifi_change = 0;
 392
 393         if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
 394             nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
 395             nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
 396             nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
 397             (dev->addr_len &&
 398              nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
 399             (dev->ifindex != dev_get_iflink(dev) &&
 400              nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
 401                 goto nla_put_failure;
 402
 403         if (event == RTM_NEWLINK && port) {
 404                 struct nlattr *nest
 405                         = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
 406
 407                 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
 408                         goto nla_put_failure;
 409                 nla_nest_end(skb, nest);
 410         }
 411
 412         /* Check if  the VID information is requested */
 413         if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
 414             (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
 415                 struct net_bridge_vlan_group *vg;
 416                 struct nlattr *af;
 417                 int err;
 418
 419                 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */
 420                 rcu_read_lock();
 421                 if (port)
 422                         vg = nbp_vlan_group_rcu(port);
 423                 else
 424                         vg = br_vlan_group_rcu(br);
 425
 426                 if (!vg || !vg->num_vlans) {
 427                         rcu_read_unlock();
 428                         goto done;
 429                 }
 430                 af = nla_nest_start(skb, IFLA_AF_SPEC);
 431                 if (!af) {
 432                         rcu_read_unlock();
 433                         goto nla_put_failure;
 434                 }
 435                 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
 436                         err = br_fill_ifvlaninfo_compressed(skb, vg);
 437                 else
 438                         err = br_fill_ifvlaninfo(skb, vg);
 439
 440                 if (port && (port->flags & BR_VLAN_TUNNEL))
 441                         err = br_fill_vlan_tunnel_info(skb, vg);
 442                 rcu_read_unlock();
 443                 if (err)
 444                         goto nla_put_failure;
 445                 nla_nest_end(skb, af);
 446         }
 447
 448 done:
 449         nlmsg_end(skb, nlh);
 450         return 0;
 451
 452 nla_put_failure:
 453         nlmsg_cancel(skb, nlh);
 454         return -EMSGSIZE;
 455 }
 456
 457 /*
 458  * Notify listeners of a change in port information
 459  */
 460 void br_ifinfo_notify(int event, struct net_bridge_port *port)
 461 {
 462         struct net *net;
 463         struct sk_buff *skb;
 464         int err = -ENOBUFS;
 465         u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
 466
 467         if (!port)
 468                 return;
 469
 470         net = dev_net(port->dev);
 471         br_debug(port->br, "port %u(%s) event %d\n",
 472                  (unsigned int)port->port_no, port->dev->name, event);
 473
 474         skb = nlmsg_new(br_nlmsg_size(port->dev, filter), GFP_ATOMIC);
 475         if (skb == NULL)
 476                 goto errout;
 477
 478         err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, port->dev);
 479         if (err < 0) {
 480                 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
 481                 WARN_ON(err == -EMSGSIZE);
 482                 kfree_skb(skb);
 483                 goto errout;
 484         }
 485         rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
 486         return;
 487 errout:
 488         rtnl_set_sk_err(net, RTNLGRP_LINK, err);
 489 }
 490
 491
 492 /*
 493  * Dump information about all ports, in response to GETLINK
 494  */
 495 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 496                struct net_device *dev, u32 filter_mask, int nlflags)
 497 {
 498         struct net_bridge_port *port = br_port_get_rtnl(dev);
 499
 500         if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
 501             !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
 502                 return 0;
 503
 504         return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
 505                               filter_mask, dev);
 506 }
 507
 508 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
 509                         int cmd, struct bridge_vlan_info *vinfo)
 510 {
 511         int err = 0;
 512
 513         switch (cmd) {
 514         case RTM_SETLINK:
 515                 if (p) {
 516                         /* if the MASTER flag is set this will act on the global
 517                          * per-VLAN entry as well
 518                          */
 519                         err = nbp_vlan_add(p, vinfo->vid, vinfo->flags);
 520                         if (err)
 521                                 break;
 522                 } else {
 523                         vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
 524                         err = br_vlan_add(br, vinfo->vid, vinfo->flags);
 525                 }
 526                 break;
 527
 528         case RTM_DELLINK:
 529                 if (p) {
 530                         nbp_vlan_delete(p, vinfo->vid);
 531                         if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER)
 532                                 br_vlan_delete(p->br, vinfo->vid);
 533                 } else {
 534                         br_vlan_delete(br, vinfo->vid);
 535                 }
 536                 break;
 537         }
 538
 539         return err;
 540 }
 541
 542 static int br_process_vlan_info(struct net_bridge *br,
 543                                 struct net_bridge_port *p, int cmd,
 544                                 struct bridge_vlan_info *vinfo_curr,
 545                                 struct bridge_vlan_info **vinfo_last)
 546 {
 547         if (!vinfo_curr->vid || vinfo_curr->vid >= VLAN_VID_MASK)
 548                 return -EINVAL;
 549
 550         if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
 551                 /* check if we are already processing a range */
 552                 if (*vinfo_last)
 553                         return -EINVAL;
 554                 *vinfo_last = vinfo_curr;
 555                 /* don't allow range of pvids */
 556                 if ((*vinfo_last)->flags & BRIDGE_VLAN_INFO_PVID)
 557                         return -EINVAL;
 558                 return 0;
 559         }
 560
 561         if (*vinfo_last) {
 562                 struct bridge_vlan_info tmp_vinfo;
 563                 int v, err;
 564
 565                 if (!(vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END))
 566                         return -EINVAL;
 567
 568                 if (vinfo_curr->vid <= (*vinfo_last)->vid)
 569                         return -EINVAL;
 570
 571                 memcpy(&tmp_vinfo, *vinfo_last,
 572                        sizeof(struct bridge_vlan_info));
 573                 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
 574                         tmp_vinfo.vid = v;
 575                         err = br_vlan_info(br, p, cmd, &tmp_vinfo);
 576                         if (err)
 577                                 break;
 578                 }
 579                 *vinfo_last = NULL;
 580
 581                 return err;
 582         }
 583
 584         return br_vlan_info(br, p, cmd, vinfo_curr);
 585 }
 586
 587 static int br_afspec(struct net_bridge *br,
 588                      struct net_bridge_port *p,
 589                      struct nlattr *af_spec,
 590                      int cmd)
 591 {
 592         struct bridge_vlan_info *vinfo_curr = NULL;
 593         struct bridge_vlan_info *vinfo_last = NULL;
 594         struct nlattr *attr;
 595         struct vtunnel_info tinfo_last = {};
 596         struct vtunnel_info tinfo_curr = {};
 597         int err = 0, rem;
 598
 599         nla_for_each_nested(attr, af_spec, rem) {
 600                 err = 0;
 601                 switch (nla_type(attr)) {
 602                 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
 603                         if (!p || !(p->flags & BR_VLAN_TUNNEL))
 604                                 return -EINVAL;
 605                         err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
 606                         if (err)
 607                                 return err;
 608                         err = br_process_vlan_tunnel_info(br, p, cmd,
 609                                                           &tinfo_curr,
 610                                                           &tinfo_last);
 611                         if (err)
 612                                 return err;
 613                         break;
 614                 case IFLA_BRIDGE_VLAN_INFO:
 615                         if (nla_len(attr) != sizeof(struct bridge_vlan_info))
 616                                 return -EINVAL;
 617                         vinfo_curr = nla_data(attr);
 618                         err = br_process_vlan_info(br, p, cmd, vinfo_curr,
 619                                                    &vinfo_last);
 620                         if (err)
 621                                 return err;
 622                         break;
 623                 }
 624         }
 625
 626         return err;
 627 }
 628
 629 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
 630         [IFLA_BRPORT_STATE]     = { .type = NLA_U8 },
 631         [IFLA_BRPORT_COST]      = { .type = NLA_U32 },
 632         [IFLA_BRPORT_PRIORITY]  = { .type = NLA_U16 },
 633         [IFLA_BRPORT_MODE]      = { .type = NLA_U8 },
 634         [IFLA_BRPORT_GUARD]     = { .type = NLA_U8 },
 635         [IFLA_BRPORT_PROTECT]   = { .type = NLA_U8 },
 636         [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
 637         [IFLA_BRPORT_LEARNING]  = { .type = NLA_U8 },
 638         [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
 639         [IFLA_BRPORT_PROXYARP]  = { .type = NLA_U8 },
 640         [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
 641         [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
 642         [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
 643         [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
 644         [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
 645         [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
 646 };
 647
 648 /* Change the state of the port and notify spanning tree */
 649 static int br_set_port_state(struct net_bridge_port *p, u8 state)
 650 {
 651         if (state > BR_STATE_BLOCKING)
 652                 return -EINVAL;
 653
 654         /* if kernel STP is running, don't allow changes */
 655         if (p->br->stp_enabled == BR_KERNEL_STP)
 656                 return -EBUSY;
 657
 658         /* if device is not up, change is not allowed
 659          * if link is not present, only allowable state is disabled
 660          */
 661         if (!netif_running(p->dev) ||
 662             (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
 663                 return -ENETDOWN;
 664
 665         br_set_state(p, state);
 666         br_port_state_selection(p->br);
 667         return 0;
 668 }
 669
 670 /* Set/clear or port flags based on attribute */
 671 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
 672                             int attrtype, unsigned long mask)
 673 {
 674         unsigned long flags;
 675         int err;
 676
 677         if (!tb[attrtype])
 678                 return 0;
 679
 680         if (nla_get_u8(tb[attrtype]))
 681                 flags = p->flags | mask;
 682         else
 683                 flags = p->flags & ~mask;
 684
 685         err = br_switchdev_set_port_flag(p, flags, mask);
 686         if (err)
 687                 return err;
 688
 689         p->flags = flags;
 690         return 0;
 691 }
 692
 693 /* Process bridge protocol info on port */
 694 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
 695 {
 696         unsigned long old_flags = p->flags;
 697         bool br_vlan_tunnel_old = false;
 698         int err;
 699
 700         err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
 701         if (err)
 702                 return err;
 703
 704         err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
 705         if (err)
 706                 return err;
 707
 708         err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
 709         if (err)
 710                 return err;
 711
 712         err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
 713         if (err)
 714                 return err;
 715
 716         err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
 717         if (err)
 718                 return err;
 719
 720         err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
 721         if (err)
 722                 return err;
 723
 724         err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
 725         if (err)
 726                 return err;
 727
 728         err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
 729         if (err)
 730                 return err;
 731
 732         err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
 733         if (err)
 734                 return err;
 735
 736         err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
 737         if (err)
 738                 return err;
 739
 740         err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
 741         if (err)
 742                 return err;
 743
 744         br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false;
 745         err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
 746         if (err)
 747                 return err;
 748
 749         if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
 750                 nbp_vlan_tunnel_info_flush(p);
 751
 752         if (tb[IFLA_BRPORT_COST]) {
 753                 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
 754                 if (err)
 755                         return err;
 756         }
 757
 758         if (tb[IFLA_BRPORT_PRIORITY]) {
 759                 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
 760                 if (err)
 761                         return err;
 762         }
 763
 764         if (tb[IFLA_BRPORT_STATE]) {
 765                 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
 766                 if (err)
 767                         return err;
 768         }
 769
 770         if (tb[IFLA_BRPORT_FLUSH])
 771                 br_fdb_delete_by_port(p->br, p, 0, 0);
 772
 773 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 774         if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
 775                 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
 776
 777                 err = br_multicast_set_port_router(p, mcast_router);
 778                 if (err)
 779                         return err;
 780         }
 781 #endif
 782
 783         if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
 784                 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
 785
 786                 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
 787                         return -EINVAL;
 788                 p->group_fwd_mask = fwd_mask;
 789         }
 790
 791         err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
 792                                BR_NEIGH_SUPPRESS);
 793         if (err)
 794                 return err;
 795
 796         br_port_flags_change(p, old_flags ^ p->flags);
 797         return 0;
 798 }
 799
 800 /* Change state and parameters on port. */
 801 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
 802 {
 803         struct nlattr *protinfo;
 804         struct nlattr *afspec;
 805         struct net_bridge_port *p;
 806         struct nlattr *tb[IFLA_BRPORT_MAX + 1];
 807         int err = 0;
 808
 809         protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
 810         afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
 811         if (!protinfo && !afspec)
 812                 return 0;
 813
 814         p = br_port_get_rtnl(dev);
 815         /* We want to accept dev as bridge itself if the AF_SPEC
 816          * is set to see if someone is setting vlan info on the bridge
 817          */
 818         if (!p && !afspec)
 819                 return -EINVAL;
 820
 821         if (p && protinfo) {
 822                 if (protinfo->nla_type & NLA_F_NESTED) {
 823                         err = nla_parse_nested(tb, IFLA_BRPORT_MAX, protinfo,
 824                                                br_port_policy, NULL);
 825                         if (err)
 826                                 return err;
 827
 828                         spin_lock_bh(&p->br->lock);
 829                         err = br_setport(p, tb);
 830                         spin_unlock_bh(&p->br->lock);
 831                 } else {
 832                         /* Binary compatibility with old RSTP */
 833                         if (nla_len(protinfo) < sizeof(u8))
 834                                 return -EINVAL;
 835
 836                         spin_lock_bh(&p->br->lock);
 837                         err = br_set_port_state(p, nla_get_u8(protinfo));
 838                         spin_unlock_bh(&p->br->lock);
 839                 }
 840                 if (err)
 841                         goto out;
 842         }
 843
 844         if (afspec) {
 845                 err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
 846                                 afspec, RTM_SETLINK);
 847         }
 848
 849         if (err == 0)
 850                 br_ifinfo_notify(RTM_NEWLINK, p);
 851 out:
 852         return err;
 853 }
 854
 855 /* Delete port information */
 856 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
 857 {
 858         struct nlattr *afspec;
 859         struct net_bridge_port *p;
 860         int err = 0;
 861
 862         afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
 863         if (!afspec)
 864                 return 0;
 865
 866         p = br_port_get_rtnl(dev);
 867         /* We want to accept dev as bridge itself as well */
 868         if (!p && !(dev->priv_flags & IFF_EBRIDGE))
 869                 return -EINVAL;
 870
 871         err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
 872                         afspec, RTM_DELLINK);
 873         if (err == 0)
 874                 /* Send RTM_NEWLINK because userspace
 875                  * expects RTM_NEWLINK for vlan dels
 876                  */
 877                 br_ifinfo_notify(RTM_NEWLINK, p);
 878
 879         return err;
 880 }
 881
 882 static int br_validate(struct nlattr *tb[], struct nlattr *data[],
 883                        struct netlink_ext_ack *extack)
 884 {
 885         if (tb[IFLA_ADDRESS]) {
 886                 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
 887                         return -EINVAL;
 888                 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
 889                         return -EADDRNOTAVAIL;
 890         }
 891
 892         if (!data)
 893                 return 0;
 894
 895 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 896         if (data[IFLA_BR_VLAN_PROTOCOL]) {
 897                 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
 898                 case htons(ETH_P_8021Q):
 899                 case htons(ETH_P_8021AD):
 900                         break;
 901                 default:
 902                         return -EPROTONOSUPPORT;
 903                 }
 904         }
 905
 906         if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
 907                 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
 908
 909                 if (defpvid >= VLAN_VID_MASK)
 910                         return -EINVAL;
 911         }
 912 #endif
 913
 914         return 0;
 915 }
 916
 917 static int br_port_slave_changelink(struct net_device *brdev,
 918                                     struct net_device *dev,
 919                                     struct nlattr *tb[],
 920                                     struct nlattr *data[],
 921                                     struct netlink_ext_ack *extack)
 922 {
 923         struct net_bridge *br = netdev_priv(brdev);
 924         int ret;
 925
 926         if (!data)
 927                 return 0;
 928
 929         spin_lock_bh(&br->lock);
 930         ret = br_setport(br_port_get_rtnl(dev), data);
 931         spin_unlock_bh(&br->lock);
 932
 933         return ret;
 934 }
 935
 936 static int br_port_fill_slave_info(struct sk_buff *skb,
 937                                    const struct net_device *brdev,
 938                                    const struct net_device *dev)
 939 {
 940         return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
 941 }
 942
 943 static size_t br_port_get_slave_size(const struct net_device *brdev,
 944                                      const struct net_device *dev)
 945 {
 946         return br_port_info_size();
 947 }
 948
 949 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
 950         [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
 951         [IFLA_BR_HELLO_TIME]    = { .type = NLA_U32 },
 952         [IFLA_BR_MAX_AGE]       = { .type = NLA_U32 },
 953         [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
 954         [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
 955         [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
 956         [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
 957         [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
 958         [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
 959         [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
 960                                  .len  = ETH_ALEN },
 961         [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
 962         [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
 963         [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
 964         [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
 965         [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
 966         [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
 967         [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
 968         [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
 969         [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
 970         [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
 971         [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
 972         [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
 973         [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
 974         [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
 975         [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
 976         [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
 977         [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
 978         [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
 979         [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
 980         [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
 981         [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
 982         [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
 983 };
 984
 985 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
 986                          struct nlattr *data[],
 987                          struct netlink_ext_ack *extack)
 988 {
 989         struct net_bridge *br = netdev_priv(brdev);
 990         int err;
 991
 992         if (!data)
 993                 return 0;
 994
 995         if (data[IFLA_BR_FORWARD_DELAY]) {
 996                 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
 997                 if (err)
 998                         return err;
 999         }
1000
1001         if (data[IFLA_BR_HELLO_TIME]) {
1002                 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1003                 if (err)
1004                         return err;
1005         }
1006
1007         if (data[IFLA_BR_MAX_AGE]) {
1008                 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1009                 if (err)
1010                         return err;
1011         }
1012
1013         if (data[IFLA_BR_AGEING_TIME]) {
1014                 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1015                 if (err)
1016                         return err;
1017         }
1018
1019         if (data[IFLA_BR_STP_STATE]) {
1020                 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1021
1022                 br_stp_set_enabled(br, stp_enabled);
1023         }
1024
1025         if (data[IFLA_BR_PRIORITY]) {
1026                 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1027
1028                 br_stp_set_bridge_priority(br, priority);
1029         }
1030
1031         if (data[IFLA_BR_VLAN_FILTERING]) {
1032                 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1033
1034                 err = __br_vlan_filter_toggle(br, vlan_filter);
1035                 if (err)
1036                         return err;
1037         }
1038
1039 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1040         if (data[IFLA_BR_VLAN_PROTOCOL]) {
1041                 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1042
1043                 err = __br_vlan_set_proto(br, vlan_proto);
1044                 if (err)
1045                         return err;
1046         }
1047
1048         if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1049                 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1050
1051                 err = __br_vlan_set_default_pvid(br, defpvid);
1052                 if (err)
1053                         return err;
1054         }
1055
1056         if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1057                 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1058
1059                 err = br_vlan_set_stats(br, vlan_stats);
1060                 if (err)
1061                         return err;
1062         }
1063 #endif
1064
1065         if (data[IFLA_BR_GROUP_FWD_MASK]) {
1066                 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1067
1068                 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1069                         return -EINVAL;
1070                 br->group_fwd_mask = fwd_mask;
1071         }
1072
1073         if (data[IFLA_BR_GROUP_ADDR]) {
1074                 u8 new_addr[ETH_ALEN];
1075
1076                 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1077                         return -EINVAL;
1078                 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1079                 if (!is_link_local_ether_addr(new_addr))
1080                         return -EINVAL;
1081                 if (new_addr[5] == 1 ||         /* 802.3x Pause address */
1082                     new_addr[5] == 2 ||         /* 802.3ad Slow protocols */
1083                     new_addr[5] == 3)           /* 802.1X PAE address */
1084                         return -EINVAL;
1085                 spin_lock_bh(&br->lock);
1086                 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1087                 spin_unlock_bh(&br->lock);
1088                 br->group_addr_set = true;
1089                 br_recalculate_fwd_mask(br);
1090         }
1091
1092         if (data[IFLA_BR_FDB_FLUSH])
1093                 br_fdb_flush(br);
1094
1095 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1096         if (data[IFLA_BR_MCAST_ROUTER]) {
1097                 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1098
1099                 err = br_multicast_set_router(br, multicast_router);
1100                 if (err)
1101                         return err;
1102         }
1103
1104         if (data[IFLA_BR_MCAST_SNOOPING]) {
1105                 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1106
1107                 err = br_multicast_toggle(br, mcast_snooping);
1108                 if (err)
1109                         return err;
1110         }
1111
1112         if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1113                 u8 val;
1114
1115                 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
1116                 br->multicast_query_use_ifaddr = !!val;
1117         }
1118
1119         if (data[IFLA_BR_MCAST_QUERIER]) {
1120                 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1121
1122                 err = br_multicast_set_querier(br, mcast_querier);
1123                 if (err)
1124                         return err;
1125         }
1126
1127         if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) {
1128                 u32 val = nla_get_u32(data[IFLA_BR_MCAST_HASH_ELASTICITY]);
1129
1130                 br->hash_elasticity = val;
1131         }
1132
1133         if (data[IFLA_BR_MCAST_HASH_MAX]) {
1134                 u32 hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
1135
1136                 err = br_multicast_set_hash_max(br, hash_max);
1137                 if (err)
1138                         return err;
1139         }
1140
1141         if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1142                 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1143
1144                 br->multicast_last_member_count = val;
1145         }
1146
1147         if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1148                 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1149
1150                 br->multicast_startup_query_count = val;
1151         }
1152
1153         if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1154                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1155
1156                 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1157         }
1158
1159         if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1160                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1161
1162                 br->multicast_membership_interval = clock_t_to_jiffies(val);
1163         }
1164
1165         if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1166                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1167
1168                 br->multicast_querier_interval = clock_t_to_jiffies(val);
1169         }
1170
1171         if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1172                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1173
1174                 br->multicast_query_interval = clock_t_to_jiffies(val);
1175         }
1176
1177         if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1178                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1179
1180                 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1181         }
1182
1183         if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1184                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1185
1186                 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1187         }
1188
1189         if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1190                 __u8 mcast_stats;
1191
1192                 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
1193                 br->multicast_stats_enabled = !!mcast_stats;
1194         }
1195
1196         if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1197                 __u8 igmp_version;
1198
1199                 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1200                 err = br_multicast_set_igmp_version(br, igmp_version);
1201                 if (err)
1202                         return err;
1203         }
1204
1205 #if IS_ENABLED(CONFIG_IPV6)
1206         if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1207                 __u8 mld_version;
1208
1209                 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1210                 err = br_multicast_set_mld_version(br, mld_version);
1211                 if (err)
1212                         return err;
1213         }
1214 #endif
1215 #endif
1216 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1217         if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1218                 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1219
1220                 br->nf_call_iptables = val ? true : false;
1221         }
1222
1223         if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1224                 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1225
1226                 br->nf_call_ip6tables = val ? true : false;
1227         }
1228
1229         if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1230                 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1231
1232                 br->nf_call_arptables = val ? true : false;
1233         }
1234 #endif
1235
1236         return 0;
1237 }
1238
1239 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
1240                           struct nlattr *tb[], struct nlattr *data[],
1241                           struct netlink_ext_ack *extack)
1242 {
1243         struct net_bridge *br = netdev_priv(dev);
1244         int err;
1245
1246         if (tb[IFLA_ADDRESS]) {
1247                 spin_lock_bh(&br->lock);
1248                 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1249                 spin_unlock_bh(&br->lock);
1250         }
1251
1252         err = register_netdevice(dev);
1253         if (err)
1254                 return err;
1255
1256         err = br_changelink(dev, tb, data, extack);
1257         if (err)
1258                 unregister_netdevice(dev);
1259         return err;
1260 }
1261
1262 static size_t br_get_size(const struct net_device *brdev)
1263 {
1264         return nla_total_size(sizeof(u32)) +    /* IFLA_BR_FORWARD_DELAY  */
1265                nla_total_size(sizeof(u32)) +    /* IFLA_BR_HELLO_TIME */
1266                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MAX_AGE */
1267                nla_total_size(sizeof(u32)) +    /* IFLA_BR_AGEING_TIME */
1268                nla_total_size(sizeof(u32)) +    /* IFLA_BR_STP_STATE */
1269                nla_total_size(sizeof(u16)) +    /* IFLA_BR_PRIORITY */
1270                nla_total_size(sizeof(u8)) +     /* IFLA_BR_VLAN_FILTERING */
1271 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1272                nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1273                nla_total_size(sizeof(u16)) +    /* IFLA_BR_VLAN_DEFAULT_PVID */
1274                nla_total_size(sizeof(u8)) +     /* IFLA_BR_VLAN_STATS_ENABLED */
1275 #endif
1276                nla_total_size(sizeof(u16)) +    /* IFLA_BR_GROUP_FWD_MASK */
1277                nla_total_size(sizeof(struct ifla_bridge_id)) +   /* IFLA_BR_ROOT_ID */
1278                nla_total_size(sizeof(struct ifla_bridge_id)) +   /* IFLA_BR_BRIDGE_ID */
1279                nla_total_size(sizeof(u16)) +    /* IFLA_BR_ROOT_PORT */
1280                nla_total_size(sizeof(u32)) +    /* IFLA_BR_ROOT_PATH_COST */
1281                nla_total_size(sizeof(u8)) +     /* IFLA_BR_TOPOLOGY_CHANGE */
1282                nla_total_size(sizeof(u8)) +     /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1283                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1284                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1285                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1286                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1287                nla_total_size(ETH_ALEN) +       /* IFLA_BR_GROUP_ADDR */
1288 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1289                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_ROUTER */
1290                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_SNOOPING */
1291                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1292                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_QUERIER */
1293                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_STATS_ENABLED */
1294                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_HASH_ELASTICITY */
1295                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_HASH_MAX */
1296                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1297                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1298                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1299                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1300                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1301                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1302                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1303                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1304                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_IGMP_VERSION */
1305                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_MLD_VERSION */
1306 #endif
1307 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1308                nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_IPTABLES */
1309                nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_IP6TABLES */
1310                nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_ARPTABLES */
1311 #endif
1312                0;
1313 }
1314
1315 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1316 {
1317         struct net_bridge *br = netdev_priv(brdev);
1318         u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1319         u32 hello_time = jiffies_to_clock_t(br->hello_time);
1320         u32 age_time = jiffies_to_clock_t(br->max_age);
1321         u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1322         u32 stp_enabled = br->stp_enabled;
1323         u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1324         u8 vlan_enabled = br_vlan_enabled(br->dev);
1325         u64 clockval;
1326
1327         clockval = br_timer_value(&br->hello_timer);
1328         if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
1329                 return -EMSGSIZE;
1330         clockval = br_timer_value(&br->tcn_timer);
1331         if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
1332                 return -EMSGSIZE;
1333         clockval = br_timer_value(&br->topology_change_timer);
1334         if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1335                               IFLA_BR_PAD))
1336                 return -EMSGSIZE;
1337         clockval = br_timer_value(&br->gc_work.timer);
1338         if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
1339                 return -EMSGSIZE;
1340
1341         if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1342             nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1343             nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1344             nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1345             nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1346             nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1347             nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1348             nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1349             nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1350                     &br->bridge_id) ||
1351             nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1352                     &br->designated_root) ||
1353             nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1354             nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1355             nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1356             nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1357                        br->topology_change_detected) ||
1358             nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr))
1359                 return -EMSGSIZE;
1360
1361 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1362         if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1363             nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
1364             nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, br->vlan_stats_enabled))
1365                 return -EMSGSIZE;
1366 #endif
1367 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1368         if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
1369             nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) ||
1370             nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1371                        br->multicast_query_use_ifaddr) ||
1372             nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) ||
1373             nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
1374                        br->multicast_stats_enabled) ||
1375             nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY,
1376                         br->hash_elasticity) ||
1377             nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1378             nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1379                         br->multicast_last_member_count) ||
1380             nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1381                         br->multicast_startup_query_count) ||
1382             nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1383                        br->multicast_igmp_version))
1384                 return -EMSGSIZE;
1385 #if IS_ENABLED(CONFIG_IPV6)
1386         if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1387                        br->multicast_mld_version))
1388                 return -EMSGSIZE;
1389 #endif
1390         clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
1391         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1392                               IFLA_BR_PAD))
1393                 return -EMSGSIZE;
1394         clockval = jiffies_to_clock_t(br->multicast_membership_interval);
1395         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1396                               IFLA_BR_PAD))
1397                 return -EMSGSIZE;
1398         clockval = jiffies_to_clock_t(br->multicast_querier_interval);
1399         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1400                               IFLA_BR_PAD))
1401                 return -EMSGSIZE;
1402         clockval = jiffies_to_clock_t(br->multicast_query_interval);
1403         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1404                               IFLA_BR_PAD))
1405                 return -EMSGSIZE;
1406         clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
1407         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1408                               IFLA_BR_PAD))
1409                 return -EMSGSIZE;
1410         clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
1411         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1412                               IFLA_BR_PAD))
1413                 return -EMSGSIZE;
1414 #endif
1415 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1416         if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1417                        br->nf_call_iptables ? 1 : 0) ||
1418             nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1419                        br->nf_call_ip6tables ? 1 : 0) ||
1420             nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1421                        br->nf_call_arptables ? 1 : 0))
1422                 return -EMSGSIZE;
1423 #endif
1424
1425         return 0;
1426 }
1427
1428 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
1429 {
1430         struct net_bridge_port *p = NULL;
1431         struct net_bridge_vlan_group *vg;
1432         struct net_bridge_vlan *v;
1433         struct net_bridge *br;
1434         int numvls = 0;
1435
1436         switch (attr) {
1437         case IFLA_STATS_LINK_XSTATS:
1438                 br = netdev_priv(dev);
1439                 vg = br_vlan_group(br);
1440                 break;
1441         case IFLA_STATS_LINK_XSTATS_SLAVE:
1442                 p = br_port_get_rtnl(dev);
1443                 if (!p)
1444                         return 0;
1445                 br = p->br;
1446                 vg = nbp_vlan_group(p);
1447                 break;
1448         default:
1449                 return 0;
1450         }
1451
1452         if (vg) {
1453                 /* we need to count all, even placeholder entries */
1454                 list_for_each_entry(v, &vg->vlan_list, vlist)
1455                         numvls++;
1456         }
1457
1458         return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1459                nla_total_size(sizeof(struct br_mcast_stats)) +
1460                nla_total_size(0);
1461 }
1462
1463 static int br_fill_linkxstats(struct sk_buff *skb,
1464                               const struct net_device *dev,
1465                               int *prividx, int attr)
1466 {
1467         struct nlattr *nla __maybe_unused;
1468         struct net_bridge_port *p = NULL;
1469         struct net_bridge_vlan_group *vg;
1470         struct net_bridge_vlan *v;
1471         struct net_bridge *br;
1472         struct nlattr *nest;
1473         int vl_idx = 0;
1474
1475         switch (attr) {
1476         case IFLA_STATS_LINK_XSTATS:
1477                 br = netdev_priv(dev);
1478                 vg = br_vlan_group(br);
1479                 break;
1480         case IFLA_STATS_LINK_XSTATS_SLAVE:
1481                 p = br_port_get_rtnl(dev);
1482                 if (!p)
1483                         return 0;
1484                 br = p->br;
1485                 vg = nbp_vlan_group(p);
1486                 break;
1487         default:
1488                 return -EINVAL;
1489         }
1490
1491         nest = nla_nest_start(skb, LINK_XSTATS_TYPE_BRIDGE);
1492         if (!nest)
1493                 return -EMSGSIZE;
1494
1495         if (vg) {
1496                 u16 pvid;
1497
1498                 pvid = br_get_pvid(vg);
1499                 list_for_each_entry(v, &vg->vlan_list, vlist) {
1500                         struct bridge_vlan_xstats vxi;
1501                         struct br_vlan_stats stats;
1502
1503                         if (++vl_idx < *prividx)
1504                                 continue;
1505                         memset(&vxi, 0, sizeof(vxi));
1506                         vxi.vid = v->vid;
1507                         vxi.flags = v->flags;
1508                         if (v->vid == pvid)
1509                                 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1510                         br_vlan_get_stats(v, &stats);
1511                         vxi.rx_bytes = stats.rx_bytes;
1512                         vxi.rx_packets = stats.rx_packets;
1513                         vxi.tx_bytes = stats.tx_bytes;
1514                         vxi.tx_packets = stats.tx_packets;
1515
1516                         if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1517                                 goto nla_put_failure;
1518                 }
1519         }
1520
1521 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1522         if (++vl_idx >= *prividx) {
1523                 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1524                                         sizeof(struct br_mcast_stats),
1525                                         BRIDGE_XSTATS_PAD);
1526                 if (!nla)
1527                         goto nla_put_failure;
1528                 br_multicast_get_stats(br, p, nla_data(nla));
1529         }
1530 #endif
1531         nla_nest_end(skb, nest);
1532         *prividx = 0;
1533
1534         return 0;
1535
1536 nla_put_failure:
1537         nla_nest_end(skb, nest);
1538         *prividx = vl_idx;
1539
1540         return -EMSGSIZE;
1541 }
1542
1543 static struct rtnl_af_ops br_af_ops __read_mostly = {
1544         .family                 = AF_BRIDGE,
1545         .get_link_af_size       = br_get_link_af_size_filtered,
1546 };
1547
1548 struct rtnl_link_ops br_link_ops __read_mostly = {
1549         .kind                   = "bridge",
1550         .priv_size              = sizeof(struct net_bridge),
1551         .setup                  = br_dev_setup,
1552         .maxtype                = IFLA_BR_MAX,
1553         .policy                 = br_policy,
1554         .validate               = br_validate,
1555         .newlink                = br_dev_newlink,
1556         .changelink             = br_changelink,
1557         .dellink                = br_dev_delete,
1558         .get_size               = br_get_size,
1559         .fill_info              = br_fill_info,
1560         .fill_linkxstats        = br_fill_linkxstats,
1561         .get_linkxstats_size    = br_get_linkxstats_size,
1562
1563         .slave_maxtype          = IFLA_BRPORT_MAX,
1564         .slave_policy           = br_port_policy,
1565         .slave_changelink       = br_port_slave_changelink,
1566         .get_slave_size         = br_port_get_slave_size,
1567         .fill_slave_info        = br_port_fill_slave_info,
1568 };
1569
1570 int __init br_netlink_init(void)
1571 {
1572         int err;
1573
1574         br_mdb_init();
1575         rtnl_af_register(&br_af_ops);
1576
1577         err = rtnl_link_register(&br_link_ops);
1578         if (err)
1579                 goto out_af;
1580
1581         return 0;
1582
1583 out_af:
1584         rtnl_af_unregister(&br_af_ops);
1585         br_mdb_uninit();
1586         return err;
1587 }
1588
1589 void br_netlink_fini(void)
1590 {
1591         br_mdb_uninit();
1592         rtnl_af_unregister(&br_af_ops);
1593         rtnl_link_unregister(&br_link_ops);
1594 }