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                           const 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         u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
 369         struct net_bridge *br;
 370         struct ifinfomsg *hdr;
 371         struct nlmsghdr *nlh;
 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 /* Notify listeners of a change in bridge or port information */
 458 void br_ifinfo_notify(int event, const struct net_bridge *br,
 459                       const struct net_bridge_port *port)
 460 {
 461         u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
 462         struct net_device *dev;
 463         struct sk_buff *skb;
 464         int err = -ENOBUFS;
 465         struct net *net;
 466         u16 port_no = 0;
 467
 468         if (WARN_ON(!port && !br))
 469                 return;
 470
 471         if (port) {
 472                 dev = port->dev;
 473                 br = port->br;
 474                 port_no = port->port_no;
 475         } else {
 476                 dev = br->dev;
 477         }
 478
 479         net = dev_net(dev);
 480         br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
 481
 482         skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
 483         if (skb == NULL)
 484                 goto errout;
 485
 486         err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev);
 487         if (err < 0) {
 488                 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
 489                 WARN_ON(err == -EMSGSIZE);
 490                 kfree_skb(skb);
 491                 goto errout;
 492         }
 493         rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
 494         return;
 495 errout:
 496         rtnl_set_sk_err(net, RTNLGRP_LINK, err);
 497 }
 498
 499 /*
 500  * Dump information about all ports, in response to GETLINK
 501  */
 502 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 503                struct net_device *dev, u32 filter_mask, int nlflags)
 504 {
 505         struct net_bridge_port *port = br_port_get_rtnl(dev);
 506
 507         if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
 508             !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
 509                 return 0;
 510
 511         return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
 512                               filter_mask, dev);
 513 }
 514
 515 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
 516                         int cmd, struct bridge_vlan_info *vinfo, bool *changed)
 517 {
 518         bool curr_change;
 519         int err = 0;
 520
 521         switch (cmd) {
 522         case RTM_SETLINK:
 523                 if (p) {
 524                         /* if the MASTER flag is set this will act on the global
 525                          * per-VLAN entry as well
 526                          */
 527                         err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
 528                                            &curr_change);
 529                 } else {
 530                         vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
 531                         err = br_vlan_add(br, vinfo->vid, vinfo->flags,
 532                                           &curr_change);
 533                 }
 534                 if (curr_change)
 535                         *changed = true;
 536                 break;
 537
 538         case RTM_DELLINK:
 539                 if (p) {
 540                         if (!nbp_vlan_delete(p, vinfo->vid))
 541                                 *changed = true;
 542
 543                         if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
 544                             !br_vlan_delete(p->br, vinfo->vid))
 545                                 *changed = true;
 546                 } else if (!br_vlan_delete(br, vinfo->vid)) {
 547                         *changed = true;
 548                 }
 549                 break;
 550         }
 551
 552         return err;
 553 }
 554
 555 static int br_process_vlan_info(struct net_bridge *br,
 556                                 struct net_bridge_port *p, int cmd,
 557                                 struct bridge_vlan_info *vinfo_curr,
 558                                 struct bridge_vlan_info **vinfo_last,
 559                                 bool *changed)
 560 {
 561         if (!vinfo_curr->vid || vinfo_curr->vid >= VLAN_VID_MASK)
 562                 return -EINVAL;
 563
 564         if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
 565                 /* check if we are already processing a range */
 566                 if (*vinfo_last)
 567                         return -EINVAL;
 568                 *vinfo_last = vinfo_curr;
 569                 /* don't allow range of pvids */
 570                 if ((*vinfo_last)->flags & BRIDGE_VLAN_INFO_PVID)
 571                         return -EINVAL;
 572                 return 0;
 573         }
 574
 575         if (*vinfo_last) {
 576                 struct bridge_vlan_info tmp_vinfo;
 577                 int v, err;
 578
 579                 if (!(vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END))
 580                         return -EINVAL;
 581
 582                 if (vinfo_curr->vid <= (*vinfo_last)->vid)
 583                         return -EINVAL;
 584
 585                 memcpy(&tmp_vinfo, *vinfo_last,
 586                        sizeof(struct bridge_vlan_info));
 587                 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
 588                         tmp_vinfo.vid = v;
 589                         err = br_vlan_info(br, p, cmd, &tmp_vinfo, changed);
 590                         if (err)
 591                                 break;
 592                 }
 593                 *vinfo_last = NULL;
 594
 595                 return err;
 596         }
 597
 598         return br_vlan_info(br, p, cmd, vinfo_curr, changed);
 599 }
 600
 601 static int br_afspec(struct net_bridge *br,
 602                      struct net_bridge_port *p,
 603                      struct nlattr *af_spec,
 604                      int cmd, bool *changed)
 605 {
 606         struct bridge_vlan_info *vinfo_curr = NULL;
 607         struct bridge_vlan_info *vinfo_last = NULL;
 608         struct nlattr *attr;
 609         struct vtunnel_info tinfo_last = {};
 610         struct vtunnel_info tinfo_curr = {};
 611         int err = 0, rem;
 612
 613         nla_for_each_nested(attr, af_spec, rem) {
 614                 err = 0;
 615                 switch (nla_type(attr)) {
 616                 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
 617                         if (!p || !(p->flags & BR_VLAN_TUNNEL))
 618                                 return -EINVAL;
 619                         err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
 620                         if (err)
 621                                 return err;
 622                         err = br_process_vlan_tunnel_info(br, p, cmd,
 623                                                           &tinfo_curr,
 624                                                           &tinfo_last,
 625                                                           changed);
 626                         if (err)
 627                                 return err;
 628                         break;
 629                 case IFLA_BRIDGE_VLAN_INFO:
 630                         if (nla_len(attr) != sizeof(struct bridge_vlan_info))
 631                                 return -EINVAL;
 632                         vinfo_curr = nla_data(attr);
 633                         err = br_process_vlan_info(br, p, cmd, vinfo_curr,
 634                                                    &vinfo_last, changed);
 635                         if (err)
 636                                 return err;
 637                         break;
 638                 }
 639         }
 640
 641         return err;
 642 }
 643
 644 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
 645         [IFLA_BRPORT_STATE]     = { .type = NLA_U8 },
 646         [IFLA_BRPORT_COST]      = { .type = NLA_U32 },
 647         [IFLA_BRPORT_PRIORITY]  = { .type = NLA_U16 },
 648         [IFLA_BRPORT_MODE]      = { .type = NLA_U8 },
 649         [IFLA_BRPORT_GUARD]     = { .type = NLA_U8 },
 650         [IFLA_BRPORT_PROTECT]   = { .type = NLA_U8 },
 651         [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
 652         [IFLA_BRPORT_LEARNING]  = { .type = NLA_U8 },
 653         [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
 654         [IFLA_BRPORT_PROXYARP]  = { .type = NLA_U8 },
 655         [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
 656         [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
 657         [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
 658         [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
 659         [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
 660         [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
 661         [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
 662         [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
 663 };
 664
 665 /* Change the state of the port and notify spanning tree */
 666 static int br_set_port_state(struct net_bridge_port *p, u8 state)
 667 {
 668         if (state > BR_STATE_BLOCKING)
 669                 return -EINVAL;
 670
 671         /* if kernel STP is running, don't allow changes */
 672         if (p->br->stp_enabled == BR_KERNEL_STP)
 673                 return -EBUSY;
 674
 675         /* if device is not up, change is not allowed
 676          * if link is not present, only allowable state is disabled
 677          */
 678         if (!netif_running(p->dev) ||
 679             (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
 680                 return -ENETDOWN;
 681
 682         br_set_state(p, state);
 683         br_port_state_selection(p->br);
 684         return 0;
 685 }
 686
 687 /* Set/clear or port flags based on attribute */
 688 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
 689                             int attrtype, unsigned long mask)
 690 {
 691         unsigned long flags;
 692         int err;
 693
 694         if (!tb[attrtype])
 695                 return 0;
 696
 697         if (nla_get_u8(tb[attrtype]))
 698                 flags = p->flags | mask;
 699         else
 700                 flags = p->flags & ~mask;
 701
 702         err = br_switchdev_set_port_flag(p, flags, mask);
 703         if (err)
 704                 return err;
 705
 706         p->flags = flags;
 707         return 0;
 708 }
 709
 710 /* Process bridge protocol info on port */
 711 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
 712 {
 713         unsigned long old_flags = p->flags;
 714         bool br_vlan_tunnel_old = false;
 715         int err;
 716
 717         err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
 718         if (err)
 719                 return err;
 720
 721         err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
 722         if (err)
 723                 return err;
 724
 725         err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
 726         if (err)
 727                 return err;
 728
 729         err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
 730         if (err)
 731                 return err;
 732
 733         err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
 734         if (err)
 735                 return err;
 736
 737         err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
 738         if (err)
 739                 return err;
 740
 741         err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
 742         if (err)
 743                 return err;
 744
 745         err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
 746         if (err)
 747                 return err;
 748
 749         err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
 750         if (err)
 751                 return err;
 752
 753         err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
 754         if (err)
 755                 return err;
 756
 757         err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
 758         if (err)
 759                 return err;
 760
 761         br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false;
 762         err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
 763         if (err)
 764                 return err;
 765
 766         if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
 767                 nbp_vlan_tunnel_info_flush(p);
 768
 769         if (tb[IFLA_BRPORT_COST]) {
 770                 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
 771                 if (err)
 772                         return err;
 773         }
 774
 775         if (tb[IFLA_BRPORT_PRIORITY]) {
 776                 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
 777                 if (err)
 778                         return err;
 779         }
 780
 781         if (tb[IFLA_BRPORT_STATE]) {
 782                 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
 783                 if (err)
 784                         return err;
 785         }
 786
 787         if (tb[IFLA_BRPORT_FLUSH])
 788                 br_fdb_delete_by_port(p->br, p, 0, 0);
 789
 790 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 791         if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
 792                 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
 793
 794                 err = br_multicast_set_port_router(p, mcast_router);
 795                 if (err)
 796                         return err;
 797         }
 798 #endif
 799
 800         if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
 801                 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
 802
 803                 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
 804                         return -EINVAL;
 805                 p->group_fwd_mask = fwd_mask;
 806         }
 807
 808         err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
 809                                BR_NEIGH_SUPPRESS);
 810         if (err)
 811                 return err;
 812
 813         br_port_flags_change(p, old_flags ^ p->flags);
 814         return 0;
 815 }
 816
 817 /* Change state and parameters on port. */
 818 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
 819 {
 820         struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
 821         struct nlattr *tb[IFLA_BRPORT_MAX + 1];
 822         struct net_bridge_port *p;
 823         struct nlattr *protinfo;
 824         struct nlattr *afspec;
 825         bool changed = false;
 826         int err = 0;
 827
 828         protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
 829         afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
 830         if (!protinfo && !afspec)
 831                 return 0;
 832
 833         p = br_port_get_rtnl(dev);
 834         /* We want to accept dev as bridge itself if the AF_SPEC
 835          * is set to see if someone is setting vlan info on the bridge
 836          */
 837         if (!p && !afspec)
 838                 return -EINVAL;
 839
 840         if (p && protinfo) {
 841                 if (protinfo->nla_type & NLA_F_NESTED) {
 842                         err = nla_parse_nested(tb, IFLA_BRPORT_MAX, protinfo,
 843                                                br_port_policy, NULL);
 844                         if (err)
 845                                 return err;
 846
 847                         spin_lock_bh(&p->br->lock);
 848                         err = br_setport(p, tb);
 849                         spin_unlock_bh(&p->br->lock);
 850                 } else {
 851                         /* Binary compatibility with old RSTP */
 852                         if (nla_len(protinfo) < sizeof(u8))
 853                                 return -EINVAL;
 854
 855                         spin_lock_bh(&p->br->lock);
 856                         err = br_set_port_state(p, nla_get_u8(protinfo));
 857                         spin_unlock_bh(&p->br->lock);
 858                 }
 859                 if (err)
 860                         goto out;
 861                 changed = true;
 862         }
 863
 864         if (afspec)
 865                 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed);
 866
 867         if (changed)
 868                 br_ifinfo_notify(RTM_NEWLINK, br, p);
 869 out:
 870         return err;
 871 }
 872
 873 /* Delete port information */
 874 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
 875 {
 876         struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
 877         struct net_bridge_port *p;
 878         struct nlattr *afspec;
 879         bool changed = false;
 880         int err = 0;
 881
 882         afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
 883         if (!afspec)
 884                 return 0;
 885
 886         p = br_port_get_rtnl(dev);
 887         /* We want to accept dev as bridge itself as well */
 888         if (!p && !(dev->priv_flags & IFF_EBRIDGE))
 889                 return -EINVAL;
 890
 891         err = br_afspec(br, p, afspec, RTM_DELLINK, &changed);
 892         if (changed)
 893                 /* Send RTM_NEWLINK because userspace
 894                  * expects RTM_NEWLINK for vlan dels
 895                  */
 896                 br_ifinfo_notify(RTM_NEWLINK, br, p);
 897
 898         return err;
 899 }
 900
 901 static int br_validate(struct nlattr *tb[], struct nlattr *data[],
 902                        struct netlink_ext_ack *extack)
 903 {
 904         if (tb[IFLA_ADDRESS]) {
 905                 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
 906                         return -EINVAL;
 907                 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
 908                         return -EADDRNOTAVAIL;
 909         }
 910
 911         if (!data)
 912                 return 0;
 913
 914 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 915         if (data[IFLA_BR_VLAN_PROTOCOL]) {
 916                 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
 917                 case htons(ETH_P_8021Q):
 918                 case htons(ETH_P_8021AD):
 919                         break;
 920                 default:
 921                         return -EPROTONOSUPPORT;
 922                 }
 923         }
 924
 925         if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
 926                 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
 927
 928                 if (defpvid >= VLAN_VID_MASK)
 929                         return -EINVAL;
 930         }
 931 #endif
 932
 933         return 0;
 934 }
 935
 936 static int br_port_slave_changelink(struct net_device *brdev,
 937                                     struct net_device *dev,
 938                                     struct nlattr *tb[],
 939                                     struct nlattr *data[],
 940                                     struct netlink_ext_ack *extack)
 941 {
 942         struct net_bridge *br = netdev_priv(brdev);
 943         int ret;
 944
 945         if (!data)
 946                 return 0;
 947
 948         spin_lock_bh(&br->lock);
 949         ret = br_setport(br_port_get_rtnl(dev), data);
 950         spin_unlock_bh(&br->lock);
 951
 952         return ret;
 953 }
 954
 955 static int br_port_fill_slave_info(struct sk_buff *skb,
 956                                    const struct net_device *brdev,
 957                                    const struct net_device *dev)
 958 {
 959         return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
 960 }
 961
 962 static size_t br_port_get_slave_size(const struct net_device *brdev,
 963                                      const struct net_device *dev)
 964 {
 965         return br_port_info_size();
 966 }
 967
 968 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
 969         [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
 970         [IFLA_BR_HELLO_TIME]    = { .type = NLA_U32 },
 971         [IFLA_BR_MAX_AGE]       = { .type = NLA_U32 },
 972         [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
 973         [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
 974         [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
 975         [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
 976         [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
 977         [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
 978         [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
 979                                  .len  = ETH_ALEN },
 980         [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
 981         [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
 982         [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
 983         [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
 984         [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
 985         [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
 986         [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
 987         [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
 988         [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
 989         [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
 990         [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
 991         [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
 992         [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
 993         [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
 994         [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
 995         [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
 996         [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
 997         [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
 998         [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
 999         [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
1000         [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
1001         [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
1002 };
1003
1004 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
1005                          struct nlattr *data[],
1006                          struct netlink_ext_ack *extack)
1007 {
1008         struct net_bridge *br = netdev_priv(brdev);
1009         int err;
1010
1011         if (!data)
1012                 return 0;
1013
1014         if (data[IFLA_BR_FORWARD_DELAY]) {
1015                 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
1016                 if (err)
1017                         return err;
1018         }
1019
1020         if (data[IFLA_BR_HELLO_TIME]) {
1021                 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1022                 if (err)
1023                         return err;
1024         }
1025
1026         if (data[IFLA_BR_MAX_AGE]) {
1027                 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1028                 if (err)
1029                         return err;
1030         }
1031
1032         if (data[IFLA_BR_AGEING_TIME]) {
1033                 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1034                 if (err)
1035                         return err;
1036         }
1037
1038         if (data[IFLA_BR_STP_STATE]) {
1039                 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1040
1041                 br_stp_set_enabled(br, stp_enabled);
1042         }
1043
1044         if (data[IFLA_BR_PRIORITY]) {
1045                 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1046
1047                 br_stp_set_bridge_priority(br, priority);
1048         }
1049
1050         if (data[IFLA_BR_VLAN_FILTERING]) {
1051                 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1052
1053                 err = __br_vlan_filter_toggle(br, vlan_filter);
1054                 if (err)
1055                         return err;
1056         }
1057
1058 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1059         if (data[IFLA_BR_VLAN_PROTOCOL]) {
1060                 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1061
1062                 err = __br_vlan_set_proto(br, vlan_proto);
1063                 if (err)
1064                         return err;
1065         }
1066
1067         if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1068                 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1069
1070                 err = __br_vlan_set_default_pvid(br, defpvid);
1071                 if (err)
1072                         return err;
1073         }
1074
1075         if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1076                 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1077
1078                 err = br_vlan_set_stats(br, vlan_stats);
1079                 if (err)
1080                         return err;
1081         }
1082 #endif
1083
1084         if (data[IFLA_BR_GROUP_FWD_MASK]) {
1085                 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1086
1087                 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1088                         return -EINVAL;
1089                 br->group_fwd_mask = fwd_mask;
1090         }
1091
1092         if (data[IFLA_BR_GROUP_ADDR]) {
1093                 u8 new_addr[ETH_ALEN];
1094
1095                 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1096                         return -EINVAL;
1097                 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1098                 if (!is_link_local_ether_addr(new_addr))
1099                         return -EINVAL;
1100                 if (new_addr[5] == 1 ||         /* 802.3x Pause address */
1101                     new_addr[5] == 2 ||         /* 802.3ad Slow protocols */
1102                     new_addr[5] == 3)           /* 802.1X PAE address */
1103                         return -EINVAL;
1104                 spin_lock_bh(&br->lock);
1105                 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1106                 spin_unlock_bh(&br->lock);
1107                 br->group_addr_set = true;
1108                 br_recalculate_fwd_mask(br);
1109         }
1110
1111         if (data[IFLA_BR_FDB_FLUSH])
1112                 br_fdb_flush(br);
1113
1114 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1115         if (data[IFLA_BR_MCAST_ROUTER]) {
1116                 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1117
1118                 err = br_multicast_set_router(br, multicast_router);
1119                 if (err)
1120                         return err;
1121         }
1122
1123         if (data[IFLA_BR_MCAST_SNOOPING]) {
1124                 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1125
1126                 err = br_multicast_toggle(br, mcast_snooping);
1127                 if (err)
1128                         return err;
1129         }
1130
1131         if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1132                 u8 val;
1133
1134                 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
1135                 br->multicast_query_use_ifaddr = !!val;
1136         }
1137
1138         if (data[IFLA_BR_MCAST_QUERIER]) {
1139                 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1140
1141                 err = br_multicast_set_querier(br, mcast_querier);
1142                 if (err)
1143                         return err;
1144         }
1145
1146         if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) {
1147                 u32 val = nla_get_u32(data[IFLA_BR_MCAST_HASH_ELASTICITY]);
1148
1149                 br->hash_elasticity = val;
1150         }
1151
1152         if (data[IFLA_BR_MCAST_HASH_MAX]) {
1153                 u32 hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
1154
1155                 err = br_multicast_set_hash_max(br, hash_max);
1156                 if (err)
1157                         return err;
1158         }
1159
1160         if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1161                 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1162
1163                 br->multicast_last_member_count = val;
1164         }
1165
1166         if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1167                 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1168
1169                 br->multicast_startup_query_count = val;
1170         }
1171
1172         if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1173                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1174
1175                 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1176         }
1177
1178         if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1179                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1180
1181                 br->multicast_membership_interval = clock_t_to_jiffies(val);
1182         }
1183
1184         if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1185                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1186
1187                 br->multicast_querier_interval = clock_t_to_jiffies(val);
1188         }
1189
1190         if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1191                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1192
1193                 br->multicast_query_interval = clock_t_to_jiffies(val);
1194         }
1195
1196         if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1197                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1198
1199                 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1200         }
1201
1202         if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1203                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1204
1205                 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1206         }
1207
1208         if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1209                 __u8 mcast_stats;
1210
1211                 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
1212                 br->multicast_stats_enabled = !!mcast_stats;
1213         }
1214
1215         if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1216                 __u8 igmp_version;
1217
1218                 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1219                 err = br_multicast_set_igmp_version(br, igmp_version);
1220                 if (err)
1221                         return err;
1222         }
1223
1224 #if IS_ENABLED(CONFIG_IPV6)
1225         if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1226                 __u8 mld_version;
1227
1228                 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1229                 err = br_multicast_set_mld_version(br, mld_version);
1230                 if (err)
1231                         return err;
1232         }
1233 #endif
1234 #endif
1235 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1236         if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1237                 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1238
1239                 br->nf_call_iptables = val ? true : false;
1240         }
1241
1242         if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1243                 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1244
1245                 br->nf_call_ip6tables = val ? true : false;
1246         }
1247
1248         if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1249                 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1250
1251                 br->nf_call_arptables = val ? true : false;
1252         }
1253 #endif
1254
1255         return 0;
1256 }
1257
1258 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
1259                           struct nlattr *tb[], struct nlattr *data[],
1260                           struct netlink_ext_ack *extack)
1261 {
1262         struct net_bridge *br = netdev_priv(dev);
1263         int err;
1264
1265         if (tb[IFLA_ADDRESS]) {
1266                 spin_lock_bh(&br->lock);
1267                 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1268                 spin_unlock_bh(&br->lock);
1269         }
1270
1271         err = register_netdevice(dev);
1272         if (err)
1273                 return err;
1274
1275         err = br_changelink(dev, tb, data, extack);
1276         if (err)
1277                 unregister_netdevice(dev);
1278         return err;
1279 }
1280
1281 static size_t br_get_size(const struct net_device *brdev)
1282 {
1283         return nla_total_size(sizeof(u32)) +    /* IFLA_BR_FORWARD_DELAY  */
1284                nla_total_size(sizeof(u32)) +    /* IFLA_BR_HELLO_TIME */
1285                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MAX_AGE */
1286                nla_total_size(sizeof(u32)) +    /* IFLA_BR_AGEING_TIME */
1287                nla_total_size(sizeof(u32)) +    /* IFLA_BR_STP_STATE */
1288                nla_total_size(sizeof(u16)) +    /* IFLA_BR_PRIORITY */
1289                nla_total_size(sizeof(u8)) +     /* IFLA_BR_VLAN_FILTERING */
1290 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1291                nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1292                nla_total_size(sizeof(u16)) +    /* IFLA_BR_VLAN_DEFAULT_PVID */
1293                nla_total_size(sizeof(u8)) +     /* IFLA_BR_VLAN_STATS_ENABLED */
1294 #endif
1295                nla_total_size(sizeof(u16)) +    /* IFLA_BR_GROUP_FWD_MASK */
1296                nla_total_size(sizeof(struct ifla_bridge_id)) +   /* IFLA_BR_ROOT_ID */
1297                nla_total_size(sizeof(struct ifla_bridge_id)) +   /* IFLA_BR_BRIDGE_ID */
1298                nla_total_size(sizeof(u16)) +    /* IFLA_BR_ROOT_PORT */
1299                nla_total_size(sizeof(u32)) +    /* IFLA_BR_ROOT_PATH_COST */
1300                nla_total_size(sizeof(u8)) +     /* IFLA_BR_TOPOLOGY_CHANGE */
1301                nla_total_size(sizeof(u8)) +     /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1302                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1303                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1304                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1305                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1306                nla_total_size(ETH_ALEN) +       /* IFLA_BR_GROUP_ADDR */
1307 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1308                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_ROUTER */
1309                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_SNOOPING */
1310                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1311                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_QUERIER */
1312                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_STATS_ENABLED */
1313                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_HASH_ELASTICITY */
1314                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_HASH_MAX */
1315                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1316                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1317                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1318                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1319                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1320                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1321                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1322                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1323                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_IGMP_VERSION */
1324                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_MLD_VERSION */
1325 #endif
1326 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1327                nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_IPTABLES */
1328                nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_IP6TABLES */
1329                nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_ARPTABLES */
1330 #endif
1331                0;
1332 }
1333
1334 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1335 {
1336         struct net_bridge *br = netdev_priv(brdev);
1337         u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1338         u32 hello_time = jiffies_to_clock_t(br->hello_time);
1339         u32 age_time = jiffies_to_clock_t(br->max_age);
1340         u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1341         u32 stp_enabled = br->stp_enabled;
1342         u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1343         u8 vlan_enabled = br_vlan_enabled(br->dev);
1344         u64 clockval;
1345
1346         clockval = br_timer_value(&br->hello_timer);
1347         if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
1348                 return -EMSGSIZE;
1349         clockval = br_timer_value(&br->tcn_timer);
1350         if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
1351                 return -EMSGSIZE;
1352         clockval = br_timer_value(&br->topology_change_timer);
1353         if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1354                               IFLA_BR_PAD))
1355                 return -EMSGSIZE;
1356         clockval = br_timer_value(&br->gc_work.timer);
1357         if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
1358                 return -EMSGSIZE;
1359
1360         if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1361             nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1362             nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1363             nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1364             nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1365             nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1366             nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1367             nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1368             nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1369                     &br->bridge_id) ||
1370             nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1371                     &br->designated_root) ||
1372             nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1373             nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1374             nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1375             nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1376                        br->topology_change_detected) ||
1377             nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr))
1378                 return -EMSGSIZE;
1379
1380 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1381         if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1382             nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
1383             nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, br->vlan_stats_enabled))
1384                 return -EMSGSIZE;
1385 #endif
1386 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1387         if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
1388             nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) ||
1389             nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1390                        br->multicast_query_use_ifaddr) ||
1391             nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) ||
1392             nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
1393                        br->multicast_stats_enabled) ||
1394             nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY,
1395                         br->hash_elasticity) ||
1396             nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1397             nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1398                         br->multicast_last_member_count) ||
1399             nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1400                         br->multicast_startup_query_count) ||
1401             nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1402                        br->multicast_igmp_version))
1403                 return -EMSGSIZE;
1404 #if IS_ENABLED(CONFIG_IPV6)
1405         if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1406                        br->multicast_mld_version))
1407                 return -EMSGSIZE;
1408 #endif
1409         clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
1410         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1411                               IFLA_BR_PAD))
1412                 return -EMSGSIZE;
1413         clockval = jiffies_to_clock_t(br->multicast_membership_interval);
1414         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1415                               IFLA_BR_PAD))
1416                 return -EMSGSIZE;
1417         clockval = jiffies_to_clock_t(br->multicast_querier_interval);
1418         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1419                               IFLA_BR_PAD))
1420                 return -EMSGSIZE;
1421         clockval = jiffies_to_clock_t(br->multicast_query_interval);
1422         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1423                               IFLA_BR_PAD))
1424                 return -EMSGSIZE;
1425         clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
1426         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1427                               IFLA_BR_PAD))
1428                 return -EMSGSIZE;
1429         clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
1430         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1431                               IFLA_BR_PAD))
1432                 return -EMSGSIZE;
1433 #endif
1434 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1435         if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1436                        br->nf_call_iptables ? 1 : 0) ||
1437             nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1438                        br->nf_call_ip6tables ? 1 : 0) ||
1439             nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1440                        br->nf_call_arptables ? 1 : 0))
1441                 return -EMSGSIZE;
1442 #endif
1443
1444         return 0;
1445 }
1446
1447 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
1448 {
1449         struct net_bridge_port *p = NULL;
1450         struct net_bridge_vlan_group *vg;
1451         struct net_bridge_vlan *v;
1452         struct net_bridge *br;
1453         int numvls = 0;
1454
1455         switch (attr) {
1456         case IFLA_STATS_LINK_XSTATS:
1457                 br = netdev_priv(dev);
1458                 vg = br_vlan_group(br);
1459                 break;
1460         case IFLA_STATS_LINK_XSTATS_SLAVE:
1461                 p = br_port_get_rtnl(dev);
1462                 if (!p)
1463                         return 0;
1464                 br = p->br;
1465                 vg = nbp_vlan_group(p);
1466                 break;
1467         default:
1468                 return 0;
1469         }
1470
1471         if (vg) {
1472                 /* we need to count all, even placeholder entries */
1473                 list_for_each_entry(v, &vg->vlan_list, vlist)
1474                         numvls++;
1475         }
1476
1477         return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1478                nla_total_size(sizeof(struct br_mcast_stats)) +
1479                nla_total_size(0);
1480 }
1481
1482 static int br_fill_linkxstats(struct sk_buff *skb,
1483                               const struct net_device *dev,
1484                               int *prividx, int attr)
1485 {
1486         struct nlattr *nla __maybe_unused;
1487         struct net_bridge_port *p = NULL;
1488         struct net_bridge_vlan_group *vg;
1489         struct net_bridge_vlan *v;
1490         struct net_bridge *br;
1491         struct nlattr *nest;
1492         int vl_idx = 0;
1493
1494         switch (attr) {
1495         case IFLA_STATS_LINK_XSTATS:
1496                 br = netdev_priv(dev);
1497                 vg = br_vlan_group(br);
1498                 break;
1499         case IFLA_STATS_LINK_XSTATS_SLAVE:
1500                 p = br_port_get_rtnl(dev);
1501                 if (!p)
1502                         return 0;
1503                 br = p->br;
1504                 vg = nbp_vlan_group(p);
1505                 break;
1506         default:
1507                 return -EINVAL;
1508         }
1509
1510         nest = nla_nest_start(skb, LINK_XSTATS_TYPE_BRIDGE);
1511         if (!nest)
1512                 return -EMSGSIZE;
1513
1514         if (vg) {
1515                 u16 pvid;
1516
1517                 pvid = br_get_pvid(vg);
1518                 list_for_each_entry(v, &vg->vlan_list, vlist) {
1519                         struct bridge_vlan_xstats vxi;
1520                         struct br_vlan_stats stats;
1521
1522                         if (++vl_idx < *prividx)
1523                                 continue;
1524                         memset(&vxi, 0, sizeof(vxi));
1525                         vxi.vid = v->vid;
1526                         vxi.flags = v->flags;
1527                         if (v->vid == pvid)
1528                                 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1529                         br_vlan_get_stats(v, &stats);
1530                         vxi.rx_bytes = stats.rx_bytes;
1531                         vxi.rx_packets = stats.rx_packets;
1532                         vxi.tx_bytes = stats.tx_bytes;
1533                         vxi.tx_packets = stats.tx_packets;
1534
1535                         if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1536                                 goto nla_put_failure;
1537                 }
1538         }
1539
1540 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1541         if (++vl_idx >= *prividx) {
1542                 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1543                                         sizeof(struct br_mcast_stats),
1544                                         BRIDGE_XSTATS_PAD);
1545                 if (!nla)
1546                         goto nla_put_failure;
1547                 br_multicast_get_stats(br, p, nla_data(nla));
1548         }
1549 #endif
1550         nla_nest_end(skb, nest);
1551         *prividx = 0;
1552
1553         return 0;
1554
1555 nla_put_failure:
1556         nla_nest_end(skb, nest);
1557         *prividx = vl_idx;
1558
1559         return -EMSGSIZE;
1560 }
1561
1562 static struct rtnl_af_ops br_af_ops __read_mostly = {
1563         .family                 = AF_BRIDGE,
1564         .get_link_af_size       = br_get_link_af_size_filtered,
1565 };
1566
1567 struct rtnl_link_ops br_link_ops __read_mostly = {
1568         .kind                   = "bridge",
1569         .priv_size              = sizeof(struct net_bridge),
1570         .setup                  = br_dev_setup,
1571         .maxtype                = IFLA_BR_MAX,
1572         .policy                 = br_policy,
1573         .validate               = br_validate,
1574         .newlink                = br_dev_newlink,
1575         .changelink             = br_changelink,
1576         .dellink                = br_dev_delete,
1577         .get_size               = br_get_size,
1578         .fill_info              = br_fill_info,
1579         .fill_linkxstats        = br_fill_linkxstats,
1580         .get_linkxstats_size    = br_get_linkxstats_size,
1581
1582         .slave_maxtype          = IFLA_BRPORT_MAX,
1583         .slave_policy           = br_port_policy,
1584         .slave_changelink       = br_port_slave_changelink,
1585         .get_slave_size         = br_port_get_slave_size,
1586         .fill_slave_info        = br_port_fill_slave_info,
1587 };
1588
1589 int __init br_netlink_init(void)
1590 {
1591         int err;
1592
1593         br_mdb_init();
1594         rtnl_af_register(&br_af_ops);
1595
1596         err = rtnl_link_register(&br_link_ops);
1597         if (err)
1598                 goto out_af;
1599
1600         return 0;
1601
1602 out_af:
1603         rtnl_af_unregister(&br_af_ops);
1604         br_mdb_uninit();
1605         return err;
1606 }
1607
1608 void br_netlink_fini(void)
1609 {
1610         br_mdb_uninit();
1611         rtnl_af_unregister(&br_af_ops);
1612         rtnl_link_unregister(&br_link_ops);
1613 }