net/bridge/br_netlink.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *      Bridge netlink control interface
   4  *
   5  *      Authors:
   6  *      Stephen Hemminger               <shemminger@osdl.org>
   7  */
   8
   9 #include <linux/kernel.h>
  10 #include <linux/slab.h>
  11 #include <linux/etherdevice.h>
  12 #include <net/rtnetlink.h>
  13 #include <net/net_namespace.h>
  14 #include <net/sock.h>
  15 #include <uapi/linux/if_bridge.h>
  16
  17 #include "br_private.h"
  18 #include "br_private_stp.h"
  19 #include "br_private_tunnel.h"
  20
  21 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
  22                                 u32 filter_mask)
  23 {
  24         struct net_bridge_vlan *v;
  25         u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
  26         u16 flags, pvid;
  27         int num_vlans = 0;
  28
  29         if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
  30                 return 0;
  31
  32         pvid = br_get_pvid(vg);
  33         /* Count number of vlan infos */
  34         list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
  35                 flags = 0;
  36                 /* only a context, bridge vlan not activated */
  37                 if (!br_vlan_should_use(v))
  38                         continue;
  39                 if (v->vid == pvid)
  40                         flags |= BRIDGE_VLAN_INFO_PVID;
  41
  42                 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
  43                         flags |= BRIDGE_VLAN_INFO_UNTAGGED;
  44
  45                 if (vid_range_start == 0) {
  46                         goto initvars;
  47                 } else if ((v->vid - vid_range_end) == 1 &&
  48                         flags == vid_range_flags) {
  49                         vid_range_end = v->vid;
  50                         continue;
  51                 } else {
  52                         if ((vid_range_end - vid_range_start) > 0)
  53                                 num_vlans += 2;
  54                         else
  55                                 num_vlans += 1;
  56                 }
  57 initvars:
  58                 vid_range_start = v->vid;
  59                 vid_range_end = v->vid;
  60                 vid_range_flags = flags;
  61         }
  62
  63         if (vid_range_start != 0) {
  64                 if ((vid_range_end - vid_range_start) > 0)
  65                         num_vlans += 2;
  66                 else
  67                         num_vlans += 1;
  68         }
  69
  70         return num_vlans;
  71 }
  72
  73 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
  74                                  u32 filter_mask)
  75 {
  76         int num_vlans;
  77
  78         if (!vg)
  79                 return 0;
  80
  81         if (filter_mask & RTEXT_FILTER_BRVLAN)
  82                 return vg->num_vlans;
  83
  84         rcu_read_lock();
  85         num_vlans = __get_num_vlan_infos(vg, filter_mask);
  86         rcu_read_unlock();
  87
  88         return num_vlans;
  89 }
  90
  91 static size_t br_get_link_af_size_filtered(const struct net_device *dev,
  92                                            u32 filter_mask)
  93 {
  94         struct net_bridge_vlan_group *vg = NULL;
  95         struct net_bridge_port *p = NULL;
  96         struct net_bridge *br;
  97         int num_vlan_infos;
  98         size_t vinfo_sz = 0;
  99
 100         rcu_read_lock();
 101         if (netif_is_bridge_port(dev)) {
 102                 p = br_port_get_check_rcu(dev);
 103                 if (p)
 104                         vg = nbp_vlan_group_rcu(p);
 105         } else if (dev->priv_flags & IFF_EBRIDGE) {
 106                 br = netdev_priv(dev);
 107                 vg = br_vlan_group_rcu(br);
 108         }
 109         num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
 110         rcu_read_unlock();
 111
 112         if (p && (p->flags & BR_VLAN_TUNNEL))
 113                 vinfo_sz += br_get_vlan_tunnel_info_size(vg);
 114
 115         /* Each VLAN is returned in bridge_vlan_info along with flags */
 116         vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
 117
 118         return vinfo_sz;
 119 }
 120
 121 static inline size_t br_port_info_size(void)
 122 {
 123         return nla_total_size(1)        /* IFLA_BRPORT_STATE  */
 124                 + nla_total_size(2)     /* IFLA_BRPORT_PRIORITY */
 125                 + nla_total_size(4)     /* IFLA_BRPORT_COST */
 126                 + nla_total_size(1)     /* IFLA_BRPORT_MODE */
 127                 + nla_total_size(1)     /* IFLA_BRPORT_GUARD */
 128                 + nla_total_size(1)     /* IFLA_BRPORT_PROTECT */
 129                 + nla_total_size(1)     /* IFLA_BRPORT_FAST_LEAVE */
 130                 + nla_total_size(1)     /* IFLA_BRPORT_MCAST_TO_UCAST */
 131                 + nla_total_size(1)     /* IFLA_BRPORT_LEARNING */
 132                 + nla_total_size(1)     /* IFLA_BRPORT_UNICAST_FLOOD */
 133                 + nla_total_size(1)     /* IFLA_BRPORT_MCAST_FLOOD */
 134                 + nla_total_size(1)     /* IFLA_BRPORT_BCAST_FLOOD */
 135                 + nla_total_size(1)     /* IFLA_BRPORT_PROXYARP */
 136                 + nla_total_size(1)     /* IFLA_BRPORT_PROXYARP_WIFI */
 137                 + nla_total_size(1)     /* IFLA_BRPORT_VLAN_TUNNEL */
 138                 + nla_total_size(1)     /* IFLA_BRPORT_NEIGH_SUPPRESS */
 139                 + nla_total_size(1)     /* IFLA_BRPORT_ISOLATED */
 140                 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
 141                 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
 142                 + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_DESIGNATED_PORT */
 143                 + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_DESIGNATED_COST */
 144                 + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_ID */
 145                 + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_NO */
 146                 + nla_total_size(sizeof(u8))    /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
 147                 + nla_total_size(sizeof(u8))    /* IFLA_BRPORT_CONFIG_PENDING */
 148                 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
 149                 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
 150                 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
 151 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 152                 + nla_total_size(sizeof(u8))    /* IFLA_BRPORT_MULTICAST_ROUTER */
 153 #endif
 154                 + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_GROUP_FWD_MASK */
 155                 + 0;
 156 }
 157
 158 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
 159 {
 160         return NLMSG_ALIGN(sizeof(struct ifinfomsg))
 161                 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
 162                 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
 163                 + nla_total_size(4) /* IFLA_MASTER */
 164                 + nla_total_size(4) /* IFLA_MTU */
 165                 + nla_total_size(4) /* IFLA_LINK */
 166                 + nla_total_size(1) /* IFLA_OPERSTATE */
 167                 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
 168                 + nla_total_size(br_get_link_af_size_filtered(dev,
 169                                  filter_mask)) /* IFLA_AF_SPEC */
 170                 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */
 171 }
 172
 173 static int br_port_fill_attrs(struct sk_buff *skb,
 174                               const struct net_bridge_port *p)
 175 {
 176         u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
 177         struct net_bridge_port *backup_p;
 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             nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)))
 218                 return -EMSGSIZE;
 219
 220         timerval = br_timer_value(&p->message_age_timer);
 221         if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
 222                               IFLA_BRPORT_PAD))
 223                 return -EMSGSIZE;
 224         timerval = br_timer_value(&p->forward_delay_timer);
 225         if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
 226                               IFLA_BRPORT_PAD))
 227                 return -EMSGSIZE;
 228         timerval = br_timer_value(&p->hold_timer);
 229         if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
 230                               IFLA_BRPORT_PAD))
 231                 return -EMSGSIZE;
 232
 233 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 234         if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
 235                        p->multicast_router))
 236                 return -EMSGSIZE;
 237 #endif
 238
 239         /* we might be called only with br->lock */
 240         rcu_read_lock();
 241         backup_p = rcu_dereference(p->backup_port);
 242         if (backup_p)
 243                 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT,
 244                             backup_p->dev->ifindex);
 245         rcu_read_unlock();
 246
 247         return 0;
 248 }
 249
 250 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
 251                                     u16 vid_end, u16 flags)
 252 {
 253         struct  bridge_vlan_info vinfo;
 254
 255         if ((vid_end - vid_start) > 0) {
 256                 /* add range to skb */
 257                 vinfo.vid = vid_start;
 258                 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
 259                 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
 260                             sizeof(vinfo), &vinfo))
 261                         goto nla_put_failure;
 262
 263                 vinfo.vid = vid_end;
 264                 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
 265                 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
 266                             sizeof(vinfo), &vinfo))
 267                         goto nla_put_failure;
 268         } else {
 269                 vinfo.vid = vid_start;
 270                 vinfo.flags = flags;
 271                 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
 272                             sizeof(vinfo), &vinfo))
 273                         goto nla_put_failure;
 274         }
 275
 276         return 0;
 277
 278 nla_put_failure:
 279         return -EMSGSIZE;
 280 }
 281
 282 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
 283                                          struct net_bridge_vlan_group *vg)
 284 {
 285         struct net_bridge_vlan *v;
 286         u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
 287         u16 flags, pvid;
 288         int err = 0;
 289
 290         /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
 291          * and mark vlan info with begin and end flags
 292          * if vlaninfo represents a range
 293          */
 294         pvid = br_get_pvid(vg);
 295         list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
 296                 flags = 0;
 297                 if (!br_vlan_should_use(v))
 298                         continue;
 299                 if (v->vid == pvid)
 300                         flags |= BRIDGE_VLAN_INFO_PVID;
 301
 302                 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
 303                         flags |= BRIDGE_VLAN_INFO_UNTAGGED;
 304
 305                 if (vid_range_start == 0) {
 306                         goto initvars;
 307                 } else if ((v->vid - vid_range_end) == 1 &&
 308                         flags == vid_range_flags) {
 309                         vid_range_end = v->vid;
 310                         continue;
 311                 } else {
 312                         err = br_fill_ifvlaninfo_range(skb, vid_range_start,
 313                                                        vid_range_end,
 314                                                        vid_range_flags);
 315                         if (err)
 316                                 return err;
 317                 }
 318
 319 initvars:
 320                 vid_range_start = v->vid;
 321                 vid_range_end = v->vid;
 322                 vid_range_flags = flags;
 323         }
 324
 325         if (vid_range_start != 0) {
 326                 /* Call it once more to send any left over vlans */
 327                 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
 328                                                vid_range_end,
 329                                                vid_range_flags);
 330                 if (err)
 331                         return err;
 332         }
 333
 334         return 0;
 335 }
 336
 337 static int br_fill_ifvlaninfo(struct sk_buff *skb,
 338                               struct net_bridge_vlan_group *vg)
 339 {
 340         struct bridge_vlan_info vinfo;
 341         struct net_bridge_vlan *v;
 342         u16 pvid;
 343
 344         pvid = br_get_pvid(vg);
 345         list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
 346                 if (!br_vlan_should_use(v))
 347                         continue;
 348
 349                 vinfo.vid = v->vid;
 350                 vinfo.flags = 0;
 351                 if (v->vid == pvid)
 352                         vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
 353
 354                 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
 355                         vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
 356
 357                 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
 358                             sizeof(vinfo), &vinfo))
 359                         goto nla_put_failure;
 360         }
 361
 362         return 0;
 363
 364 nla_put_failure:
 365         return -EMSGSIZE;
 366 }
 367
 368 /*
 369  * Create one netlink message for one interface
 370  * Contains port and master info as well as carrier and bridge state.
 371  */
 372 static int br_fill_ifinfo(struct sk_buff *skb,
 373                           const struct net_bridge_port *port,
 374                           u32 pid, u32 seq, int event, unsigned int flags,
 375                           u32 filter_mask, const struct net_device *dev)
 376 {
 377         u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
 378         struct net_bridge *br;
 379         struct ifinfomsg *hdr;
 380         struct nlmsghdr *nlh;
 381
 382         if (port)
 383                 br = port->br;
 384         else
 385                 br = netdev_priv(dev);
 386
 387         br_debug(br, "br_fill_info event %d port %s master %s\n",
 388                      event, dev->name, br->dev->name);
 389
 390         nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
 391         if (nlh == NULL)
 392                 return -EMSGSIZE;
 393
 394         hdr = nlmsg_data(nlh);
 395         hdr->ifi_family = AF_BRIDGE;
 396         hdr->__ifi_pad = 0;
 397         hdr->ifi_type = dev->type;
 398         hdr->ifi_index = dev->ifindex;
 399         hdr->ifi_flags = dev_get_flags(dev);
 400         hdr->ifi_change = 0;
 401
 402         if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
 403             nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
 404             nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
 405             nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
 406             (dev->addr_len &&
 407              nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
 408             (dev->ifindex != dev_get_iflink(dev) &&
 409              nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
 410                 goto nla_put_failure;
 411
 412         if (event == RTM_NEWLINK && port) {
 413                 struct nlattr *nest;
 414
 415                 nest = nla_nest_start(skb, IFLA_PROTINFO);
 416                 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
 417                         goto nla_put_failure;
 418                 nla_nest_end(skb, nest);
 419         }
 420
 421         /* Check if  the VID information is requested */
 422         if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
 423             (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
 424                 struct net_bridge_vlan_group *vg;
 425                 struct nlattr *af;
 426                 int err;
 427
 428                 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */
 429                 rcu_read_lock();
 430                 if (port)
 431                         vg = nbp_vlan_group_rcu(port);
 432                 else
 433                         vg = br_vlan_group_rcu(br);
 434
 435                 if (!vg || !vg->num_vlans) {
 436                         rcu_read_unlock();
 437                         goto done;
 438                 }
 439                 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
 440                 if (!af) {
 441                         rcu_read_unlock();
 442                         goto nla_put_failure;
 443                 }
 444                 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
 445                         err = br_fill_ifvlaninfo_compressed(skb, vg);
 446                 else
 447                         err = br_fill_ifvlaninfo(skb, vg);
 448
 449                 if (port && (port->flags & BR_VLAN_TUNNEL))
 450                         err = br_fill_vlan_tunnel_info(skb, vg);
 451                 rcu_read_unlock();
 452                 if (err)
 453                         goto nla_put_failure;
 454                 nla_nest_end(skb, af);
 455         }
 456
 457 done:
 458         nlmsg_end(skb, nlh);
 459         return 0;
 460
 461 nla_put_failure:
 462         nlmsg_cancel(skb, nlh);
 463         return -EMSGSIZE;
 464 }
 465
 466 /* Notify listeners of a change in bridge or port information */
 467 void br_ifinfo_notify(int event, const struct net_bridge *br,
 468                       const struct net_bridge_port *port)
 469 {
 470         u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
 471         struct net_device *dev;
 472         struct sk_buff *skb;
 473         int err = -ENOBUFS;
 474         struct net *net;
 475         u16 port_no = 0;
 476
 477         if (WARN_ON(!port && !br))
 478                 return;
 479
 480         if (port) {
 481                 dev = port->dev;
 482                 br = port->br;
 483                 port_no = port->port_no;
 484         } else {
 485                 dev = br->dev;
 486         }
 487
 488         net = dev_net(dev);
 489         br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
 490
 491         skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
 492         if (skb == NULL)
 493                 goto errout;
 494
 495         err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev);
 496         if (err < 0) {
 497                 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
 498                 WARN_ON(err == -EMSGSIZE);
 499                 kfree_skb(skb);
 500                 goto errout;
 501         }
 502         rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
 503         return;
 504 errout:
 505         rtnl_set_sk_err(net, RTNLGRP_LINK, err);
 506 }
 507
 508 /*
 509  * Dump information about all ports, in response to GETLINK
 510  */
 511 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 512                struct net_device *dev, u32 filter_mask, int nlflags)
 513 {
 514         struct net_bridge_port *port = br_port_get_rtnl(dev);
 515
 516         if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
 517             !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
 518                 return 0;
 519
 520         return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
 521                               filter_mask, dev);
 522 }
 523
 524 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
 525                         int cmd, struct bridge_vlan_info *vinfo, bool *changed,
 526                         struct netlink_ext_ack *extack)
 527 {
 528         bool curr_change;
 529         int err = 0;
 530
 531         switch (cmd) {
 532         case RTM_SETLINK:
 533                 if (p) {
 534                         /* if the MASTER flag is set this will act on the global
 535                          * per-VLAN entry as well
 536                          */
 537                         err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
 538                                            &curr_change, extack);
 539                 } else {
 540                         vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
 541                         err = br_vlan_add(br, vinfo->vid, vinfo->flags,
 542                                           &curr_change, extack);
 543                 }
 544                 if (curr_change)
 545                         *changed = true;
 546                 break;
 547
 548         case RTM_DELLINK:
 549                 if (p) {
 550                         if (!nbp_vlan_delete(p, vinfo->vid))
 551                                 *changed = true;
 552
 553                         if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
 554                             !br_vlan_delete(p->br, vinfo->vid))
 555                                 *changed = true;
 556                 } else if (!br_vlan_delete(br, vinfo->vid)) {
 557                         *changed = true;
 558                 }
 559                 break;
 560         }
 561
 562         return err;
 563 }
 564
 565 static int br_process_vlan_info(struct net_bridge *br,
 566                                 struct net_bridge_port *p, int cmd,
 567                                 struct bridge_vlan_info *vinfo_curr,
 568                                 struct bridge_vlan_info **vinfo_last,
 569                                 bool *changed,
 570                                 struct netlink_ext_ack *extack)
 571 {
 572         if (!vinfo_curr->vid || vinfo_curr->vid >= VLAN_VID_MASK)
 573                 return -EINVAL;
 574
 575         if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
 576                 /* check if we are already processing a range */
 577                 if (*vinfo_last)
 578                         return -EINVAL;
 579                 *vinfo_last = vinfo_curr;
 580                 /* don't allow range of pvids */
 581                 if ((*vinfo_last)->flags & BRIDGE_VLAN_INFO_PVID)
 582                         return -EINVAL;
 583                 return 0;
 584         }
 585
 586         if (*vinfo_last) {
 587                 struct bridge_vlan_info tmp_vinfo;
 588                 int v, err;
 589
 590                 if (!(vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END))
 591                         return -EINVAL;
 592
 593                 if (vinfo_curr->vid <= (*vinfo_last)->vid)
 594                         return -EINVAL;
 595
 596                 memcpy(&tmp_vinfo, *vinfo_last,
 597                        sizeof(struct bridge_vlan_info));
 598                 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
 599                         tmp_vinfo.vid = v;
 600                         err = br_vlan_info(br, p, cmd, &tmp_vinfo, changed,
 601                                            extack);
 602                         if (err)
 603                                 break;
 604                 }
 605                 *vinfo_last = NULL;
 606
 607                 return err;
 608         }
 609
 610         return br_vlan_info(br, p, cmd, vinfo_curr, changed, extack);
 611 }
 612
 613 static int br_afspec(struct net_bridge *br,
 614                      struct net_bridge_port *p,
 615                      struct nlattr *af_spec,
 616                      int cmd, bool *changed,
 617                      struct netlink_ext_ack *extack)
 618 {
 619         struct bridge_vlan_info *vinfo_curr = NULL;
 620         struct bridge_vlan_info *vinfo_last = NULL;
 621         struct nlattr *attr;
 622         struct vtunnel_info tinfo_last = {};
 623         struct vtunnel_info tinfo_curr = {};
 624         int err = 0, rem;
 625
 626         nla_for_each_nested(attr, af_spec, rem) {
 627                 err = 0;
 628                 switch (nla_type(attr)) {
 629                 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
 630                         if (!p || !(p->flags & BR_VLAN_TUNNEL))
 631                                 return -EINVAL;
 632                         err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
 633                         if (err)
 634                                 return err;
 635                         err = br_process_vlan_tunnel_info(br, p, cmd,
 636                                                           &tinfo_curr,
 637                                                           &tinfo_last,
 638                                                           changed);
 639                         if (err)
 640                                 return err;
 641                         break;
 642                 case IFLA_BRIDGE_VLAN_INFO:
 643                         if (nla_len(attr) != sizeof(struct bridge_vlan_info))
 644                                 return -EINVAL;
 645                         vinfo_curr = nla_data(attr);
 646                         err = br_process_vlan_info(br, p, cmd, vinfo_curr,
 647                                                    &vinfo_last, changed,
 648                                                    extack);
 649                         if (err)
 650                                 return err;
 651                         break;
 652                 }
 653         }
 654
 655         return err;
 656 }
 657
 658 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
 659         [IFLA_BRPORT_STATE]     = { .type = NLA_U8 },
 660         [IFLA_BRPORT_COST]      = { .type = NLA_U32 },
 661         [IFLA_BRPORT_PRIORITY]  = { .type = NLA_U16 },
 662         [IFLA_BRPORT_MODE]      = { .type = NLA_U8 },
 663         [IFLA_BRPORT_GUARD]     = { .type = NLA_U8 },
 664         [IFLA_BRPORT_PROTECT]   = { .type = NLA_U8 },
 665         [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
 666         [IFLA_BRPORT_LEARNING]  = { .type = NLA_U8 },
 667         [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
 668         [IFLA_BRPORT_PROXYARP]  = { .type = NLA_U8 },
 669         [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
 670         [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
 671         [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
 672         [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
 673         [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
 674         [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
 675         [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
 676         [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
 677         [IFLA_BRPORT_ISOLATED]  = { .type = NLA_U8 },
 678         [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 },
 679 };
 680
 681 /* Change the state of the port and notify spanning tree */
 682 static int br_set_port_state(struct net_bridge_port *p, u8 state)
 683 {
 684         if (state > BR_STATE_BLOCKING)
 685                 return -EINVAL;
 686
 687         /* if kernel STP is running, don't allow changes */
 688         if (p->br->stp_enabled == BR_KERNEL_STP)
 689                 return -EBUSY;
 690
 691         /* if device is not up, change is not allowed
 692          * if link is not present, only allowable state is disabled
 693          */
 694         if (!netif_running(p->dev) ||
 695             (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
 696                 return -ENETDOWN;
 697
 698         br_set_state(p, state);
 699         br_port_state_selection(p->br);
 700         return 0;
 701 }
 702
 703 /* Set/clear or port flags based on attribute */
 704 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
 705                             int attrtype, unsigned long mask)
 706 {
 707         unsigned long flags;
 708         int err;
 709
 710         if (!tb[attrtype])
 711                 return 0;
 712
 713         if (nla_get_u8(tb[attrtype]))
 714                 flags = p->flags | mask;
 715         else
 716                 flags = p->flags & ~mask;
 717
 718         err = br_switchdev_set_port_flag(p, flags, mask);
 719         if (err)
 720                 return err;
 721
 722         p->flags = flags;
 723         return 0;
 724 }
 725
 726 /* Process bridge protocol info on port */
 727 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
 728 {
 729         unsigned long old_flags = p->flags;
 730         bool br_vlan_tunnel_old = false;
 731         int err;
 732
 733         err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
 734         if (err)
 735                 return err;
 736
 737         err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
 738         if (err)
 739                 return err;
 740
 741         err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
 742         if (err)
 743                 return err;
 744
 745         err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
 746         if (err)
 747                 return err;
 748
 749         err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
 750         if (err)
 751                 return err;
 752
 753         err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
 754         if (err)
 755                 return err;
 756
 757         err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
 758         if (err)
 759                 return err;
 760
 761         err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
 762         if (err)
 763                 return err;
 764
 765         err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
 766         if (err)
 767                 return err;
 768
 769         err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
 770         if (err)
 771                 return err;
 772
 773         err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
 774         if (err)
 775                 return err;
 776
 777         br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false;
 778         err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
 779         if (err)
 780                 return err;
 781
 782         if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
 783                 nbp_vlan_tunnel_info_flush(p);
 784
 785         if (tb[IFLA_BRPORT_COST]) {
 786                 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
 787                 if (err)
 788                         return err;
 789         }
 790
 791         if (tb[IFLA_BRPORT_PRIORITY]) {
 792                 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
 793                 if (err)
 794                         return err;
 795         }
 796
 797         if (tb[IFLA_BRPORT_STATE]) {
 798                 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
 799                 if (err)
 800                         return err;
 801         }
 802
 803         if (tb[IFLA_BRPORT_FLUSH])
 804                 br_fdb_delete_by_port(p->br, p, 0, 0);
 805
 806 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 807         if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
 808                 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
 809
 810                 err = br_multicast_set_port_router(p, mcast_router);
 811                 if (err)
 812                         return err;
 813         }
 814 #endif
 815
 816         if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
 817                 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
 818
 819                 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
 820                         return -EINVAL;
 821                 p->group_fwd_mask = fwd_mask;
 822         }
 823
 824         err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
 825                                BR_NEIGH_SUPPRESS);
 826         if (err)
 827                 return err;
 828
 829         err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
 830         if (err)
 831                 return err;
 832
 833         if (tb[IFLA_BRPORT_BACKUP_PORT]) {
 834                 struct net_device *backup_dev = NULL;
 835                 u32 backup_ifindex;
 836
 837                 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
 838                 if (backup_ifindex) {
 839                         backup_dev = __dev_get_by_index(dev_net(p->dev),
 840                                                         backup_ifindex);
 841                         if (!backup_dev)
 842                                 return -ENOENT;
 843                 }
 844
 845                 err = nbp_backup_change(p, backup_dev);
 846                 if (err)
 847                         return err;
 848         }
 849
 850         br_port_flags_change(p, old_flags ^ p->flags);
 851         return 0;
 852 }
 853
 854 /* Change state and parameters on port. */
 855 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags,
 856                struct netlink_ext_ack *extack)
 857 {
 858         struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
 859         struct nlattr *tb[IFLA_BRPORT_MAX + 1];
 860         struct net_bridge_port *p;
 861         struct nlattr *protinfo;
 862         struct nlattr *afspec;
 863         bool changed = false;
 864         int err = 0;
 865
 866         protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
 867         afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
 868         if (!protinfo && !afspec)
 869                 return 0;
 870
 871         p = br_port_get_rtnl(dev);
 872         /* We want to accept dev as bridge itself if the AF_SPEC
 873          * is set to see if someone is setting vlan info on the bridge
 874          */
 875         if (!p && !afspec)
 876                 return -EINVAL;
 877
 878         if (p && protinfo) {
 879                 if (protinfo->nla_type & NLA_F_NESTED) {
 880                         err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX,
 881                                                           protinfo,
 882                                                           br_port_policy,
 883                                                           NULL);
 884                         if (err)
 885                                 return err;
 886
 887                         spin_lock_bh(&p->br->lock);
 888                         err = br_setport(p, tb);
 889                         spin_unlock_bh(&p->br->lock);
 890                 } else {
 891                         /* Binary compatibility with old RSTP */
 892                         if (nla_len(protinfo) < sizeof(u8))
 893                                 return -EINVAL;
 894
 895                         spin_lock_bh(&p->br->lock);
 896                         err = br_set_port_state(p, nla_get_u8(protinfo));
 897                         spin_unlock_bh(&p->br->lock);
 898                 }
 899                 if (err)
 900                         goto out;
 901                 changed = true;
 902         }
 903
 904         if (afspec)
 905                 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack);
 906
 907         if (changed)
 908                 br_ifinfo_notify(RTM_NEWLINK, br, p);
 909 out:
 910         return err;
 911 }
 912
 913 /* Delete port information */
 914 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
 915 {
 916         struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
 917         struct net_bridge_port *p;
 918         struct nlattr *afspec;
 919         bool changed = false;
 920         int err = 0;
 921
 922         afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
 923         if (!afspec)
 924                 return 0;
 925
 926         p = br_port_get_rtnl(dev);
 927         /* We want to accept dev as bridge itself as well */
 928         if (!p && !(dev->priv_flags & IFF_EBRIDGE))
 929                 return -EINVAL;
 930
 931         err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL);
 932         if (changed)
 933                 /* Send RTM_NEWLINK because userspace
 934                  * expects RTM_NEWLINK for vlan dels
 935                  */
 936                 br_ifinfo_notify(RTM_NEWLINK, br, p);
 937
 938         return err;
 939 }
 940
 941 static int br_validate(struct nlattr *tb[], struct nlattr *data[],
 942                        struct netlink_ext_ack *extack)
 943 {
 944         if (tb[IFLA_ADDRESS]) {
 945                 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
 946                         return -EINVAL;
 947                 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
 948                         return -EADDRNOTAVAIL;
 949         }
 950
 951         if (!data)
 952                 return 0;
 953
 954 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 955         if (data[IFLA_BR_VLAN_PROTOCOL]) {
 956                 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
 957                 case htons(ETH_P_8021Q):
 958                 case htons(ETH_P_8021AD):
 959                         break;
 960                 default:
 961                         return -EPROTONOSUPPORT;
 962                 }
 963         }
 964
 965         if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
 966                 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
 967
 968                 if (defpvid >= VLAN_VID_MASK)
 969                         return -EINVAL;
 970         }
 971 #endif
 972
 973         return 0;
 974 }
 975
 976 static int br_port_slave_changelink(struct net_device *brdev,
 977                                     struct net_device *dev,
 978                                     struct nlattr *tb[],
 979                                     struct nlattr *data[],
 980                                     struct netlink_ext_ack *extack)
 981 {
 982         struct net_bridge *br = netdev_priv(brdev);
 983         int ret;
 984
 985         if (!data)
 986                 return 0;
 987
 988         spin_lock_bh(&br->lock);
 989         ret = br_setport(br_port_get_rtnl(dev), data);
 990         spin_unlock_bh(&br->lock);
 991
 992         return ret;
 993 }
 994
 995 static int br_port_fill_slave_info(struct sk_buff *skb,
 996                                    const struct net_device *brdev,
 997                                    const struct net_device *dev)
 998 {
 999         return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
1000 }
1001
1002 static size_t br_port_get_slave_size(const struct net_device *brdev,
1003                                      const struct net_device *dev)
1004 {
1005         return br_port_info_size();
1006 }
1007
1008 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
1009         [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
1010         [IFLA_BR_HELLO_TIME]    = { .type = NLA_U32 },
1011         [IFLA_BR_MAX_AGE]       = { .type = NLA_U32 },
1012         [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
1013         [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
1014         [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
1015         [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
1016         [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
1017         [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
1018         [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
1019                                  .len  = ETH_ALEN },
1020         [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
1021         [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
1022         [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
1023         [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
1024         [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
1025         [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
1026         [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
1027         [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
1028         [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
1029         [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
1030         [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
1031         [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
1032         [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
1033         [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
1034         [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
1035         [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
1036         [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
1037         [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
1038         [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
1039         [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
1040         [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
1041         [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
1042         [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 },
1043         [IFLA_BR_MULTI_BOOLOPT] = { .type = NLA_EXACT_LEN,
1044                                     .len = sizeof(struct br_boolopt_multi) },
1045 };
1046
1047 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
1048                          struct nlattr *data[],
1049                          struct netlink_ext_ack *extack)
1050 {
1051         struct net_bridge *br = netdev_priv(brdev);
1052         int err;
1053
1054         if (!data)
1055                 return 0;
1056
1057         if (data[IFLA_BR_FORWARD_DELAY]) {
1058                 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
1059                 if (err)
1060                         return err;
1061         }
1062
1063         if (data[IFLA_BR_HELLO_TIME]) {
1064                 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1065                 if (err)
1066                         return err;
1067         }
1068
1069         if (data[IFLA_BR_MAX_AGE]) {
1070                 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1071                 if (err)
1072                         return err;
1073         }
1074
1075         if (data[IFLA_BR_AGEING_TIME]) {
1076                 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1077                 if (err)
1078                         return err;
1079         }
1080
1081         if (data[IFLA_BR_STP_STATE]) {
1082                 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1083
1084                 br_stp_set_enabled(br, stp_enabled);
1085         }
1086
1087         if (data[IFLA_BR_PRIORITY]) {
1088                 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1089
1090                 br_stp_set_bridge_priority(br, priority);
1091         }
1092
1093         if (data[IFLA_BR_VLAN_FILTERING]) {
1094                 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1095
1096                 err = __br_vlan_filter_toggle(br, vlan_filter);
1097                 if (err)
1098                         return err;
1099         }
1100
1101 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1102         if (data[IFLA_BR_VLAN_PROTOCOL]) {
1103                 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1104
1105                 err = __br_vlan_set_proto(br, vlan_proto);
1106                 if (err)
1107                         return err;
1108         }
1109
1110         if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1111                 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1112
1113                 err = __br_vlan_set_default_pvid(br, defpvid, extack);
1114                 if (err)
1115                         return err;
1116         }
1117
1118         if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1119                 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1120
1121                 err = br_vlan_set_stats(br, vlan_stats);
1122                 if (err)
1123                         return err;
1124         }
1125
1126         if (data[IFLA_BR_VLAN_STATS_PER_PORT]) {
1127                 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]);
1128
1129                 err = br_vlan_set_stats_per_port(br, per_port);
1130                 if (err)
1131                         return err;
1132         }
1133 #endif
1134
1135         if (data[IFLA_BR_GROUP_FWD_MASK]) {
1136                 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1137
1138                 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1139                         return -EINVAL;
1140                 br->group_fwd_mask = fwd_mask;
1141         }
1142
1143         if (data[IFLA_BR_GROUP_ADDR]) {
1144                 u8 new_addr[ETH_ALEN];
1145
1146                 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1147                         return -EINVAL;
1148                 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1149                 if (!is_link_local_ether_addr(new_addr))
1150                         return -EINVAL;
1151                 if (new_addr[5] == 1 ||         /* 802.3x Pause address */
1152                     new_addr[5] == 2 ||         /* 802.3ad Slow protocols */
1153                     new_addr[5] == 3)           /* 802.1X PAE address */
1154                         return -EINVAL;
1155                 spin_lock_bh(&br->lock);
1156                 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1157                 spin_unlock_bh(&br->lock);
1158                 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true);
1159                 br_recalculate_fwd_mask(br);
1160         }
1161
1162         if (data[IFLA_BR_FDB_FLUSH])
1163                 br_fdb_flush(br);
1164
1165 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1166         if (data[IFLA_BR_MCAST_ROUTER]) {
1167                 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1168
1169                 err = br_multicast_set_router(br, multicast_router);
1170                 if (err)
1171                         return err;
1172         }
1173
1174         if (data[IFLA_BR_MCAST_SNOOPING]) {
1175                 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1176
1177                 br_multicast_toggle(br, mcast_snooping);
1178         }
1179
1180         if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1181                 u8 val;
1182
1183                 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
1184                 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val);
1185         }
1186
1187         if (data[IFLA_BR_MCAST_QUERIER]) {
1188                 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1189
1190                 err = br_multicast_set_querier(br, mcast_querier);
1191                 if (err)
1192                         return err;
1193         }
1194
1195         if (data[IFLA_BR_MCAST_HASH_ELASTICITY])
1196                 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n",
1197                         RHT_ELASTICITY);
1198
1199         if (data[IFLA_BR_MCAST_HASH_MAX])
1200                 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
1201
1202         if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1203                 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1204
1205                 br->multicast_last_member_count = val;
1206         }
1207
1208         if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1209                 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1210
1211                 br->multicast_startup_query_count = val;
1212         }
1213
1214         if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1215                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1216
1217                 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1218         }
1219
1220         if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1221                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1222
1223                 br->multicast_membership_interval = clock_t_to_jiffies(val);
1224         }
1225
1226         if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1227                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1228
1229                 br->multicast_querier_interval = clock_t_to_jiffies(val);
1230         }
1231
1232         if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1233                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1234
1235                 br->multicast_query_interval = clock_t_to_jiffies(val);
1236         }
1237
1238         if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1239                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1240
1241                 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1242         }
1243
1244         if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1245                 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1246
1247                 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1248         }
1249
1250         if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1251                 __u8 mcast_stats;
1252
1253                 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
1254                 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats);
1255         }
1256
1257         if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1258                 __u8 igmp_version;
1259
1260                 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1261                 err = br_multicast_set_igmp_version(br, igmp_version);
1262                 if (err)
1263                         return err;
1264         }
1265
1266 #if IS_ENABLED(CONFIG_IPV6)
1267         if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1268                 __u8 mld_version;
1269
1270                 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1271                 err = br_multicast_set_mld_version(br, mld_version);
1272                 if (err)
1273                         return err;
1274         }
1275 #endif
1276 #endif
1277 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1278         if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1279                 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1280
1281                 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val);
1282         }
1283
1284         if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1285                 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1286
1287                 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val);
1288         }
1289
1290         if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1291                 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1292
1293                 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val);
1294         }
1295 #endif
1296
1297         if (data[IFLA_BR_MULTI_BOOLOPT]) {
1298                 struct br_boolopt_multi *bm;
1299
1300                 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]);
1301                 err = br_boolopt_multi_toggle(br, bm, extack);
1302                 if (err)
1303                         return err;
1304         }
1305
1306         return 0;
1307 }
1308
1309 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
1310                           struct nlattr *tb[], struct nlattr *data[],
1311                           struct netlink_ext_ack *extack)
1312 {
1313         struct net_bridge *br = netdev_priv(dev);
1314         int err;
1315
1316         err = register_netdevice(dev);
1317         if (err)
1318                 return err;
1319
1320         if (tb[IFLA_ADDRESS]) {
1321                 spin_lock_bh(&br->lock);
1322                 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1323                 spin_unlock_bh(&br->lock);
1324         }
1325
1326         err = br_changelink(dev, tb, data, extack);
1327         if (err)
1328                 br_dev_delete(dev, NULL);
1329
1330         return err;
1331 }
1332
1333 static size_t br_get_size(const struct net_device *brdev)
1334 {
1335         return nla_total_size(sizeof(u32)) +    /* IFLA_BR_FORWARD_DELAY  */
1336                nla_total_size(sizeof(u32)) +    /* IFLA_BR_HELLO_TIME */
1337                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MAX_AGE */
1338                nla_total_size(sizeof(u32)) +    /* IFLA_BR_AGEING_TIME */
1339                nla_total_size(sizeof(u32)) +    /* IFLA_BR_STP_STATE */
1340                nla_total_size(sizeof(u16)) +    /* IFLA_BR_PRIORITY */
1341                nla_total_size(sizeof(u8)) +     /* IFLA_BR_VLAN_FILTERING */
1342 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1343                nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1344                nla_total_size(sizeof(u16)) +    /* IFLA_BR_VLAN_DEFAULT_PVID */
1345                nla_total_size(sizeof(u8)) +     /* IFLA_BR_VLAN_STATS_ENABLED */
1346                nla_total_size(sizeof(u8)) +     /* IFLA_BR_VLAN_STATS_PER_PORT */
1347 #endif
1348                nla_total_size(sizeof(u16)) +    /* IFLA_BR_GROUP_FWD_MASK */
1349                nla_total_size(sizeof(struct ifla_bridge_id)) +   /* IFLA_BR_ROOT_ID */
1350                nla_total_size(sizeof(struct ifla_bridge_id)) +   /* IFLA_BR_BRIDGE_ID */
1351                nla_total_size(sizeof(u16)) +    /* IFLA_BR_ROOT_PORT */
1352                nla_total_size(sizeof(u32)) +    /* IFLA_BR_ROOT_PATH_COST */
1353                nla_total_size(sizeof(u8)) +     /* IFLA_BR_TOPOLOGY_CHANGE */
1354                nla_total_size(sizeof(u8)) +     /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1355                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1356                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1357                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1358                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1359                nla_total_size(ETH_ALEN) +       /* IFLA_BR_GROUP_ADDR */
1360 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1361                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_ROUTER */
1362                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_SNOOPING */
1363                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1364                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_QUERIER */
1365                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_STATS_ENABLED */
1366                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_HASH_ELASTICITY */
1367                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_HASH_MAX */
1368                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1369                nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1370                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1371                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1372                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1373                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1374                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1375                nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1376                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_IGMP_VERSION */
1377                nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_MLD_VERSION */
1378 #endif
1379 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1380                nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_IPTABLES */
1381                nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_IP6TABLES */
1382                nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_ARPTABLES */
1383 #endif
1384                nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */
1385                0;
1386 }
1387
1388 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1389 {
1390         struct net_bridge *br = netdev_priv(brdev);
1391         u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1392         u32 hello_time = jiffies_to_clock_t(br->hello_time);
1393         u32 age_time = jiffies_to_clock_t(br->max_age);
1394         u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1395         u32 stp_enabled = br->stp_enabled;
1396         u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1397         u8 vlan_enabled = br_vlan_enabled(br->dev);
1398         struct br_boolopt_multi bm;
1399         u64 clockval;
1400
1401         clockval = br_timer_value(&br->hello_timer);
1402         if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
1403                 return -EMSGSIZE;
1404         clockval = br_timer_value(&br->tcn_timer);
1405         if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
1406                 return -EMSGSIZE;
1407         clockval = br_timer_value(&br->topology_change_timer);
1408         if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1409                               IFLA_BR_PAD))
1410                 return -EMSGSIZE;
1411         clockval = br_timer_value(&br->gc_work.timer);
1412         if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
1413                 return -EMSGSIZE;
1414
1415         br_boolopt_multi_get(br, &bm);
1416         if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1417             nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1418             nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1419             nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1420             nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1421             nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1422             nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1423             nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1424             nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1425                     &br->bridge_id) ||
1426             nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1427                     &br->designated_root) ||
1428             nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1429             nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1430             nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1431             nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1432                        br->topology_change_detected) ||
1433             nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) ||
1434             nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm))
1435                 return -EMSGSIZE;
1436
1437 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1438         if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1439             nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
1440             nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED,
1441                        br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) ||
1442             nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT,
1443                        br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)))
1444                 return -EMSGSIZE;
1445 #endif
1446 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1447         if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
1448             nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING,
1449                        br_opt_get(br, BROPT_MULTICAST_ENABLED)) ||
1450             nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1451                        br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) ||
1452             nla_put_u8(skb, IFLA_BR_MCAST_QUERIER,
1453                        br_opt_get(br, BROPT_MULTICAST_QUERIER)) ||
1454             nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
1455                        br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) ||
1456             nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) ||
1457             nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1458             nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1459                         br->multicast_last_member_count) ||
1460             nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1461                         br->multicast_startup_query_count) ||
1462             nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1463                        br->multicast_igmp_version))
1464                 return -EMSGSIZE;
1465 #if IS_ENABLED(CONFIG_IPV6)
1466         if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1467                        br->multicast_mld_version))
1468                 return -EMSGSIZE;
1469 #endif
1470         clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
1471         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1472                               IFLA_BR_PAD))
1473                 return -EMSGSIZE;
1474         clockval = jiffies_to_clock_t(br->multicast_membership_interval);
1475         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1476                               IFLA_BR_PAD))
1477                 return -EMSGSIZE;
1478         clockval = jiffies_to_clock_t(br->multicast_querier_interval);
1479         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1480                               IFLA_BR_PAD))
1481                 return -EMSGSIZE;
1482         clockval = jiffies_to_clock_t(br->multicast_query_interval);
1483         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1484                               IFLA_BR_PAD))
1485                 return -EMSGSIZE;
1486         clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
1487         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1488                               IFLA_BR_PAD))
1489                 return -EMSGSIZE;
1490         clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
1491         if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1492                               IFLA_BR_PAD))
1493                 return -EMSGSIZE;
1494 #endif
1495 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1496         if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1497                        br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) ||
1498             nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1499                        br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) ||
1500             nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1501                        br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0))
1502                 return -EMSGSIZE;
1503 #endif
1504
1505         return 0;
1506 }
1507
1508 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
1509 {
1510         struct net_bridge_port *p = NULL;
1511         struct net_bridge_vlan_group *vg;
1512         struct net_bridge_vlan *v;
1513         struct net_bridge *br;
1514         int numvls = 0;
1515
1516         switch (attr) {
1517         case IFLA_STATS_LINK_XSTATS:
1518                 br = netdev_priv(dev);
1519                 vg = br_vlan_group(br);
1520                 break;
1521         case IFLA_STATS_LINK_XSTATS_SLAVE:
1522                 p = br_port_get_rtnl(dev);
1523                 if (!p)
1524                         return 0;
1525                 br = p->br;
1526                 vg = nbp_vlan_group(p);
1527                 break;
1528         default:
1529                 return 0;
1530         }
1531
1532         if (vg) {
1533                 /* we need to count all, even placeholder entries */
1534                 list_for_each_entry(v, &vg->vlan_list, vlist)
1535                         numvls++;
1536         }
1537
1538         return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1539                nla_total_size_64bit(sizeof(struct br_mcast_stats)) +
1540                nla_total_size(0);
1541 }
1542
1543 static int br_fill_linkxstats(struct sk_buff *skb,
1544                               const struct net_device *dev,
1545                               int *prividx, int attr)
1546 {
1547         struct nlattr *nla __maybe_unused;
1548         struct net_bridge_port *p = NULL;
1549         struct net_bridge_vlan_group *vg;
1550         struct net_bridge_vlan *v;
1551         struct net_bridge *br;
1552         struct nlattr *nest;
1553         int vl_idx = 0;
1554
1555         switch (attr) {
1556         case IFLA_STATS_LINK_XSTATS:
1557                 br = netdev_priv(dev);
1558                 vg = br_vlan_group(br);
1559                 break;
1560         case IFLA_STATS_LINK_XSTATS_SLAVE:
1561                 p = br_port_get_rtnl(dev);
1562                 if (!p)
1563                         return 0;
1564                 br = p->br;
1565                 vg = nbp_vlan_group(p);
1566                 break;
1567         default:
1568                 return -EINVAL;
1569         }
1570
1571         nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE);
1572         if (!nest)
1573                 return -EMSGSIZE;
1574
1575         if (vg) {
1576                 u16 pvid;
1577
1578                 pvid = br_get_pvid(vg);
1579                 list_for_each_entry(v, &vg->vlan_list, vlist) {
1580                         struct bridge_vlan_xstats vxi;
1581                         struct br_vlan_stats stats;
1582
1583                         if (++vl_idx < *prividx)
1584                                 continue;
1585                         memset(&vxi, 0, sizeof(vxi));
1586                         vxi.vid = v->vid;
1587                         vxi.flags = v->flags;
1588                         if (v->vid == pvid)
1589                                 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1590                         br_vlan_get_stats(v, &stats);
1591                         vxi.rx_bytes = stats.rx_bytes;
1592                         vxi.rx_packets = stats.rx_packets;
1593                         vxi.tx_bytes = stats.tx_bytes;
1594                         vxi.tx_packets = stats.tx_packets;
1595
1596                         if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1597                                 goto nla_put_failure;
1598                 }
1599         }
1600
1601 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1602         if (++vl_idx >= *prividx) {
1603                 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1604                                         sizeof(struct br_mcast_stats),
1605                                         BRIDGE_XSTATS_PAD);
1606                 if (!nla)
1607                         goto nla_put_failure;
1608                 br_multicast_get_stats(br, p, nla_data(nla));
1609         }
1610 #endif
1611         nla_nest_end(skb, nest);
1612         *prividx = 0;
1613
1614         return 0;
1615
1616 nla_put_failure:
1617         nla_nest_end(skb, nest);
1618         *prividx = vl_idx;
1619
1620         return -EMSGSIZE;
1621 }
1622
1623 static struct rtnl_af_ops br_af_ops __read_mostly = {
1624         .family                 = AF_BRIDGE,
1625         .get_link_af_size       = br_get_link_af_size_filtered,
1626 };
1627
1628 struct rtnl_link_ops br_link_ops __read_mostly = {
1629         .kind                   = "bridge",
1630         .priv_size              = sizeof(struct net_bridge),
1631         .setup                  = br_dev_setup,
1632         .maxtype                = IFLA_BR_MAX,
1633         .policy                 = br_policy,
1634         .validate               = br_validate,
1635         .newlink                = br_dev_newlink,
1636         .changelink             = br_changelink,
1637         .dellink                = br_dev_delete,
1638         .get_size               = br_get_size,
1639         .fill_info              = br_fill_info,
1640         .fill_linkxstats        = br_fill_linkxstats,
1641         .get_linkxstats_size    = br_get_linkxstats_size,
1642
1643         .slave_maxtype          = IFLA_BRPORT_MAX,
1644         .slave_policy           = br_port_policy,
1645         .slave_changelink       = br_port_slave_changelink,
1646         .get_slave_size         = br_port_get_slave_size,
1647         .fill_slave_info        = br_port_fill_slave_info,
1648 };
1649
1650 int __init br_netlink_init(void)
1651 {
1652         int err;
1653
1654         br_mdb_init();
1655         rtnl_af_register(&br_af_ops);
1656
1657         err = rtnl_link_register(&br_link_ops);
1658         if (err)
1659                 goto out_af;
1660
1661         return 0;
1662
1663 out_af:
1664         rtnl_af_unregister(&br_af_ops);
1665         br_mdb_uninit();
1666         return err;
1667 }
1668
1669 void br_netlink_fini(void)
1670 {
1671         br_mdb_uninit();
1672         rtnl_af_unregister(&br_af_ops);
1673         rtnl_link_unregister(&br_link_ops);
1674 }