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_rcu(dev); 103 vg = nbp_vlan_group_rcu(p); 104 } else if (dev->priv_flags & IFF_EBRIDGE) { 105 br = netdev_priv(dev); 106 vg = br_vlan_group_rcu(br); 107 } 108 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask); 109 rcu_read_unlock(); 110 111 if (p && (p->flags & BR_VLAN_TUNNEL)) 112 vinfo_sz += br_get_vlan_tunnel_info_size(vg); 113 114 /* Each VLAN is returned in bridge_vlan_info along with flags */ 115 vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); 116 117 return vinfo_sz; 118 } 119 120 static inline size_t br_port_info_size(void) 121 { 122 return nla_total_size(1) /* IFLA_BRPORT_STATE */ 123 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ 124 + nla_total_size(4) /* IFLA_BRPORT_COST */ 125 + nla_total_size(1) /* IFLA_BRPORT_MODE */ 126 + nla_total_size(1) /* IFLA_BRPORT_GUARD */ 127 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ 128 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ 129 + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */ 130 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ 131 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ 132 + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */ 133 + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */ 134 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */ 135 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */ 136 + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */ 137 + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */ 138 + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */ 139 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */ 140 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */ 141 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */ 142 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */ 143 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */ 144 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */ 145 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */ 146 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */ 147 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */ 148 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */ 149 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */ 150 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 151 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */ 152 #endif 153 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */ 154 + 0; 155 } 156 157 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) 158 { 159 return NLMSG_ALIGN(sizeof(struct ifinfomsg)) 160 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ 161 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ 162 + nla_total_size(4) /* IFLA_MASTER */ 163 + nla_total_size(4) /* IFLA_MTU */ 164 + nla_total_size(4) /* IFLA_LINK */ 165 + nla_total_size(1) /* IFLA_OPERSTATE */ 166 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ 167 + nla_total_size(br_get_link_af_size_filtered(dev, 168 filter_mask)) /* IFLA_AF_SPEC */ 169 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */ 170 } 171 172 static int br_port_fill_attrs(struct sk_buff *skb, 173 const struct net_bridge_port *p) 174 { 175 u8 mode = !!(p->flags & BR_HAIRPIN_MODE); 176 struct net_bridge_port *backup_p; 177 u64 timerval; 178 179 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || 180 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || 181 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || 182 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || 183 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || 184 nla_put_u8(skb, IFLA_BRPORT_PROTECT, 185 !!(p->flags & BR_ROOT_BLOCK)) || 186 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, 187 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || 188 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST, 189 !!(p->flags & BR_MULTICAST_TO_UNICAST)) || 190 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || 191 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, 192 !!(p->flags & BR_FLOOD)) || 193 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD, 194 !!(p->flags & BR_MCAST_FLOOD)) || 195 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD, 196 !!(p->flags & BR_BCAST_FLOOD)) || 197 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || 198 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, 199 !!(p->flags & BR_PROXYARP_WIFI)) || 200 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id), 201 &p->designated_root) || 202 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id), 203 &p->designated_bridge) || 204 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) || 205 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) || 206 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) || 207 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) || 208 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, 209 p->topology_change_ack) || 210 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) || 211 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags & 212 BR_VLAN_TUNNEL)) || 213 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) || 214 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS, 215 !!(p->flags & BR_NEIGH_SUPPRESS)) || 216 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED))) 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 /* we might be called only with br->lock */ 239 rcu_read_lock(); 240 backup_p = rcu_dereference(p->backup_port); 241 if (backup_p) 242 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT, 243 backup_p->dev->ifindex); 244 rcu_read_unlock(); 245 246 return 0; 247 } 248 249 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, 250 u16 vid_end, u16 flags) 251 { 252 struct bridge_vlan_info vinfo; 253 254 if ((vid_end - vid_start) > 0) { 255 /* add range to skb */ 256 vinfo.vid = vid_start; 257 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; 258 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 259 sizeof(vinfo), &vinfo)) 260 goto nla_put_failure; 261 262 vinfo.vid = vid_end; 263 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; 264 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 265 sizeof(vinfo), &vinfo)) 266 goto nla_put_failure; 267 } else { 268 vinfo.vid = vid_start; 269 vinfo.flags = flags; 270 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 271 sizeof(vinfo), &vinfo)) 272 goto nla_put_failure; 273 } 274 275 return 0; 276 277 nla_put_failure: 278 return -EMSGSIZE; 279 } 280 281 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, 282 struct net_bridge_vlan_group *vg) 283 { 284 struct net_bridge_vlan *v; 285 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; 286 u16 flags, pvid; 287 int err = 0; 288 289 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan 290 * and mark vlan info with begin and end flags 291 * if vlaninfo represents a range 292 */ 293 pvid = br_get_pvid(vg); 294 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 295 flags = 0; 296 if (!br_vlan_should_use(v)) 297 continue; 298 if (v->vid == pvid) 299 flags |= BRIDGE_VLAN_INFO_PVID; 300 301 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 302 flags |= BRIDGE_VLAN_INFO_UNTAGGED; 303 304 if (vid_range_start == 0) { 305 goto initvars; 306 } else if ((v->vid - vid_range_end) == 1 && 307 flags == vid_range_flags) { 308 vid_range_end = v->vid; 309 continue; 310 } else { 311 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 312 vid_range_end, 313 vid_range_flags); 314 if (err) 315 return err; 316 } 317 318 initvars: 319 vid_range_start = v->vid; 320 vid_range_end = v->vid; 321 vid_range_flags = flags; 322 } 323 324 if (vid_range_start != 0) { 325 /* Call it once more to send any left over vlans */ 326 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 327 vid_range_end, 328 vid_range_flags); 329 if (err) 330 return err; 331 } 332 333 return 0; 334 } 335 336 static int br_fill_ifvlaninfo(struct sk_buff *skb, 337 struct net_bridge_vlan_group *vg) 338 { 339 struct bridge_vlan_info vinfo; 340 struct net_bridge_vlan *v; 341 u16 pvid; 342 343 pvid = br_get_pvid(vg); 344 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 345 if (!br_vlan_should_use(v)) 346 continue; 347 348 vinfo.vid = v->vid; 349 vinfo.flags = 0; 350 if (v->vid == pvid) 351 vinfo.flags |= BRIDGE_VLAN_INFO_PVID; 352 353 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 354 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; 355 356 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 357 sizeof(vinfo), &vinfo)) 358 goto nla_put_failure; 359 } 360 361 return 0; 362 363 nla_put_failure: 364 return -EMSGSIZE; 365 } 366 367 /* 368 * Create one netlink message for one interface 369 * Contains port and master info as well as carrier and bridge state. 370 */ 371 static int br_fill_ifinfo(struct sk_buff *skb, 372 const struct net_bridge_port *port, 373 u32 pid, u32 seq, int event, unsigned int flags, 374 u32 filter_mask, const struct net_device *dev) 375 { 376 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; 377 struct net_bridge *br; 378 struct ifinfomsg *hdr; 379 struct nlmsghdr *nlh; 380 381 if (port) 382 br = port->br; 383 else 384 br = netdev_priv(dev); 385 386 br_debug(br, "br_fill_info event %d port %s master %s\n", 387 event, dev->name, br->dev->name); 388 389 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); 390 if (nlh == NULL) 391 return -EMSGSIZE; 392 393 hdr = nlmsg_data(nlh); 394 hdr->ifi_family = AF_BRIDGE; 395 hdr->__ifi_pad = 0; 396 hdr->ifi_type = dev->type; 397 hdr->ifi_index = dev->ifindex; 398 hdr->ifi_flags = dev_get_flags(dev); 399 hdr->ifi_change = 0; 400 401 if (nla_put_string(skb, IFLA_IFNAME, dev->name) || 402 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || 403 nla_put_u32(skb, IFLA_MTU, dev->mtu) || 404 nla_put_u8(skb, IFLA_OPERSTATE, operstate) || 405 (dev->addr_len && 406 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || 407 (dev->ifindex != dev_get_iflink(dev) && 408 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) 409 goto nla_put_failure; 410 411 if (event == RTM_NEWLINK && port) { 412 struct nlattr *nest; 413 414 nest = nla_nest_start(skb, IFLA_PROTINFO); 415 if (nest == NULL || br_port_fill_attrs(skb, port) < 0) 416 goto nla_put_failure; 417 nla_nest_end(skb, nest); 418 } 419 420 /* Check if the VID information is requested */ 421 if ((filter_mask & RTEXT_FILTER_BRVLAN) || 422 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { 423 struct net_bridge_vlan_group *vg; 424 struct nlattr *af; 425 int err; 426 427 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */ 428 rcu_read_lock(); 429 if (port) 430 vg = nbp_vlan_group_rcu(port); 431 else 432 vg = br_vlan_group_rcu(br); 433 434 if (!vg || !vg->num_vlans) { 435 rcu_read_unlock(); 436 goto done; 437 } 438 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC); 439 if (!af) { 440 rcu_read_unlock(); 441 goto nla_put_failure; 442 } 443 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) 444 err = br_fill_ifvlaninfo_compressed(skb, vg); 445 else 446 err = br_fill_ifvlaninfo(skb, vg); 447 448 if (port && (port->flags & BR_VLAN_TUNNEL)) 449 err = br_fill_vlan_tunnel_info(skb, vg); 450 rcu_read_unlock(); 451 if (err) 452 goto nla_put_failure; 453 nla_nest_end(skb, af); 454 } 455 456 done: 457 nlmsg_end(skb, nlh); 458 return 0; 459 460 nla_put_failure: 461 nlmsg_cancel(skb, nlh); 462 return -EMSGSIZE; 463 } 464 465 /* Notify listeners of a change in bridge or port information */ 466 void br_ifinfo_notify(int event, const struct net_bridge *br, 467 const struct net_bridge_port *port) 468 { 469 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; 470 struct net_device *dev; 471 struct sk_buff *skb; 472 int err = -ENOBUFS; 473 struct net *net; 474 u16 port_no = 0; 475 476 if (WARN_ON(!port && !br)) 477 return; 478 479 if (port) { 480 dev = port->dev; 481 br = port->br; 482 port_no = port->port_no; 483 } else { 484 dev = br->dev; 485 } 486 487 net = dev_net(dev); 488 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event); 489 490 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC); 491 if (skb == NULL) 492 goto errout; 493 494 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev); 495 if (err < 0) { 496 /* -EMSGSIZE implies BUG in br_nlmsg_size() */ 497 WARN_ON(err == -EMSGSIZE); 498 kfree_skb(skb); 499 goto errout; 500 } 501 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); 502 return; 503 errout: 504 rtnl_set_sk_err(net, RTNLGRP_LINK, err); 505 } 506 507 /* 508 * Dump information about all ports, in response to GETLINK 509 */ 510 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, 511 struct net_device *dev, u32 filter_mask, int nlflags) 512 { 513 struct net_bridge_port *port = br_port_get_rtnl(dev); 514 515 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && 516 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) 517 return 0; 518 519 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, 520 filter_mask, dev); 521 } 522 523 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, 524 int cmd, struct bridge_vlan_info *vinfo, bool *changed, 525 struct netlink_ext_ack *extack) 526 { 527 bool curr_change; 528 int err = 0; 529 530 switch (cmd) { 531 case RTM_SETLINK: 532 if (p) { 533 /* if the MASTER flag is set this will act on the global 534 * per-VLAN entry as well 535 */ 536 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags, 537 &curr_change, extack); 538 } else { 539 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; 540 err = br_vlan_add(br, vinfo->vid, vinfo->flags, 541 &curr_change, extack); 542 } 543 if (curr_change) 544 *changed = true; 545 break; 546 547 case RTM_DELLINK: 548 if (p) { 549 if (!nbp_vlan_delete(p, vinfo->vid)) 550 *changed = true; 551 552 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) && 553 !br_vlan_delete(p->br, vinfo->vid)) 554 *changed = true; 555 } else if (!br_vlan_delete(br, vinfo->vid)) { 556 *changed = true; 557 } 558 break; 559 } 560 561 return err; 562 } 563 564 int br_process_vlan_info(struct net_bridge *br, 565 struct net_bridge_port *p, int cmd, 566 struct bridge_vlan_info *vinfo_curr, 567 struct bridge_vlan_info **vinfo_last, 568 bool *changed, 569 struct netlink_ext_ack *extack) 570 { 571 int err, rtm_cmd; 572 573 if (!br_vlan_valid_id(vinfo_curr->vid, extack)) 574 return -EINVAL; 575 576 /* needed for vlan-only NEWVLAN/DELVLAN notifications */ 577 rtm_cmd = br_afspec_cmd_to_rtm(cmd); 578 579 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 580 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) 581 return -EINVAL; 582 *vinfo_last = vinfo_curr; 583 return 0; 584 } 585 586 if (*vinfo_last) { 587 struct bridge_vlan_info tmp_vinfo; 588 int v, v_change_start = 0; 589 590 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) 591 return -EINVAL; 592 593 memcpy(&tmp_vinfo, *vinfo_last, 594 sizeof(struct bridge_vlan_info)); 595 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) { 596 bool curr_change = false; 597 598 tmp_vinfo.vid = v; 599 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change, 600 extack); 601 if (err) 602 break; 603 if (curr_change) { 604 *changed = curr_change; 605 if (!v_change_start) 606 v_change_start = v; 607 } else { 608 /* nothing to notify yet */ 609 if (!v_change_start) 610 continue; 611 br_vlan_notify(br, p, v_change_start, 612 v - 1, rtm_cmd); 613 v_change_start = 0; 614 } 615 } 616 /* v_change_start is set only if the last/whole range changed */ 617 if (v_change_start) 618 br_vlan_notify(br, p, v_change_start, 619 v - 1, rtm_cmd); 620 621 *vinfo_last = NULL; 622 623 return err; 624 } 625 626 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack); 627 if (*changed) 628 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd); 629 630 return err; 631 } 632 633 static int br_afspec(struct net_bridge *br, 634 struct net_bridge_port *p, 635 struct nlattr *af_spec, 636 int cmd, bool *changed, 637 struct netlink_ext_ack *extack) 638 { 639 struct bridge_vlan_info *vinfo_curr = NULL; 640 struct bridge_vlan_info *vinfo_last = NULL; 641 struct nlattr *attr; 642 struct vtunnel_info tinfo_last = {}; 643 struct vtunnel_info tinfo_curr = {}; 644 int err = 0, rem; 645 646 nla_for_each_nested(attr, af_spec, rem) { 647 err = 0; 648 switch (nla_type(attr)) { 649 case IFLA_BRIDGE_VLAN_TUNNEL_INFO: 650 if (!p || !(p->flags & BR_VLAN_TUNNEL)) 651 return -EINVAL; 652 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr); 653 if (err) 654 return err; 655 err = br_process_vlan_tunnel_info(br, p, cmd, 656 &tinfo_curr, 657 &tinfo_last, 658 changed); 659 if (err) 660 return err; 661 break; 662 case IFLA_BRIDGE_VLAN_INFO: 663 if (nla_len(attr) != sizeof(struct bridge_vlan_info)) 664 return -EINVAL; 665 vinfo_curr = nla_data(attr); 666 err = br_process_vlan_info(br, p, cmd, vinfo_curr, 667 &vinfo_last, changed, 668 extack); 669 if (err) 670 return err; 671 break; 672 } 673 } 674 675 return err; 676 } 677 678 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { 679 [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, 680 [IFLA_BRPORT_COST] = { .type = NLA_U32 }, 681 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, 682 [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, 683 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, 684 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, 685 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, 686 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, 687 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, 688 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, 689 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, 690 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, 691 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 }, 692 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 }, 693 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 }, 694 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 }, 695 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 }, 696 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 }, 697 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 }, 698 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 }, 699 }; 700 701 /* Change the state of the port and notify spanning tree */ 702 static int br_set_port_state(struct net_bridge_port *p, u8 state) 703 { 704 if (state > BR_STATE_BLOCKING) 705 return -EINVAL; 706 707 /* if kernel STP is running, don't allow changes */ 708 if (p->br->stp_enabled == BR_KERNEL_STP) 709 return -EBUSY; 710 711 /* if device is not up, change is not allowed 712 * if link is not present, only allowable state is disabled 713 */ 714 if (!netif_running(p->dev) || 715 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) 716 return -ENETDOWN; 717 718 br_set_state(p, state); 719 br_port_state_selection(p->br); 720 return 0; 721 } 722 723 /* Set/clear or port flags based on attribute */ 724 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], 725 int attrtype, unsigned long mask) 726 { 727 unsigned long flags; 728 int err; 729 730 if (!tb[attrtype]) 731 return 0; 732 733 if (nla_get_u8(tb[attrtype])) 734 flags = p->flags | mask; 735 else 736 flags = p->flags & ~mask; 737 738 err = br_switchdev_set_port_flag(p, flags, mask); 739 if (err) 740 return err; 741 742 p->flags = flags; 743 return 0; 744 } 745 746 /* Process bridge protocol info on port */ 747 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) 748 { 749 unsigned long old_flags = p->flags; 750 bool br_vlan_tunnel_old = false; 751 int err; 752 753 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); 754 if (err) 755 return err; 756 757 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); 758 if (err) 759 return err; 760 761 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); 762 if (err) 763 return err; 764 765 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); 766 if (err) 767 return err; 768 769 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); 770 if (err) 771 return err; 772 773 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); 774 if (err) 775 return err; 776 777 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); 778 if (err) 779 return err; 780 781 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); 782 if (err) 783 return err; 784 785 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); 786 if (err) 787 return err; 788 789 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); 790 if (err) 791 return err; 792 793 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); 794 if (err) 795 return err; 796 797 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; 798 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); 799 if (err) 800 return err; 801 802 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) 803 nbp_vlan_tunnel_info_flush(p); 804 805 if (tb[IFLA_BRPORT_COST]) { 806 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); 807 if (err) 808 return err; 809 } 810 811 if (tb[IFLA_BRPORT_PRIORITY]) { 812 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); 813 if (err) 814 return err; 815 } 816 817 if (tb[IFLA_BRPORT_STATE]) { 818 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); 819 if (err) 820 return err; 821 } 822 823 if (tb[IFLA_BRPORT_FLUSH]) 824 br_fdb_delete_by_port(p->br, p, 0, 0); 825 826 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 827 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { 828 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); 829 830 err = br_multicast_set_port_router(p, mcast_router); 831 if (err) 832 return err; 833 } 834 #endif 835 836 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) { 837 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]); 838 839 if (fwd_mask & BR_GROUPFWD_MACPAUSE) 840 return -EINVAL; 841 p->group_fwd_mask = fwd_mask; 842 } 843 844 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, 845 BR_NEIGH_SUPPRESS); 846 if (err) 847 return err; 848 849 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); 850 if (err) 851 return err; 852 853 if (tb[IFLA_BRPORT_BACKUP_PORT]) { 854 struct net_device *backup_dev = NULL; 855 u32 backup_ifindex; 856 857 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]); 858 if (backup_ifindex) { 859 backup_dev = __dev_get_by_index(dev_net(p->dev), 860 backup_ifindex); 861 if (!backup_dev) 862 return -ENOENT; 863 } 864 865 err = nbp_backup_change(p, backup_dev); 866 if (err) 867 return err; 868 } 869 870 br_port_flags_change(p, old_flags ^ p->flags); 871 return 0; 872 } 873 874 /* Change state and parameters on port. */ 875 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, 876 struct netlink_ext_ack *extack) 877 { 878 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 879 struct nlattr *tb[IFLA_BRPORT_MAX + 1]; 880 struct net_bridge_port *p; 881 struct nlattr *protinfo; 882 struct nlattr *afspec; 883 bool changed = false; 884 int err = 0; 885 886 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); 887 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 888 if (!protinfo && !afspec) 889 return 0; 890 891 p = br_port_get_rtnl(dev); 892 /* We want to accept dev as bridge itself if the AF_SPEC 893 * is set to see if someone is setting vlan info on the bridge 894 */ 895 if (!p && !afspec) 896 return -EINVAL; 897 898 if (p && protinfo) { 899 if (protinfo->nla_type & NLA_F_NESTED) { 900 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX, 901 protinfo, 902 br_port_policy, 903 NULL); 904 if (err) 905 return err; 906 907 spin_lock_bh(&p->br->lock); 908 err = br_setport(p, tb); 909 spin_unlock_bh(&p->br->lock); 910 } else { 911 /* Binary compatibility with old RSTP */ 912 if (nla_len(protinfo) < sizeof(u8)) 913 return -EINVAL; 914 915 spin_lock_bh(&p->br->lock); 916 err = br_set_port_state(p, nla_get_u8(protinfo)); 917 spin_unlock_bh(&p->br->lock); 918 } 919 if (err) 920 goto out; 921 changed = true; 922 } 923 924 if (afspec) 925 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack); 926 927 if (changed) 928 br_ifinfo_notify(RTM_NEWLINK, br, p); 929 out: 930 return err; 931 } 932 933 /* Delete port information */ 934 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) 935 { 936 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 937 struct net_bridge_port *p; 938 struct nlattr *afspec; 939 bool changed = false; 940 int err = 0; 941 942 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 943 if (!afspec) 944 return 0; 945 946 p = br_port_get_rtnl(dev); 947 /* We want to accept dev as bridge itself as well */ 948 if (!p && !(dev->priv_flags & IFF_EBRIDGE)) 949 return -EINVAL; 950 951 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL); 952 if (changed) 953 /* Send RTM_NEWLINK because userspace 954 * expects RTM_NEWLINK for vlan dels 955 */ 956 br_ifinfo_notify(RTM_NEWLINK, br, p); 957 958 return err; 959 } 960 961 static int br_validate(struct nlattr *tb[], struct nlattr *data[], 962 struct netlink_ext_ack *extack) 963 { 964 if (tb[IFLA_ADDRESS]) { 965 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 966 return -EINVAL; 967 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 968 return -EADDRNOTAVAIL; 969 } 970 971 if (!data) 972 return 0; 973 974 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 975 if (data[IFLA_BR_VLAN_PROTOCOL]) { 976 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) { 977 case htons(ETH_P_8021Q): 978 case htons(ETH_P_8021AD): 979 break; 980 default: 981 return -EPROTONOSUPPORT; 982 } 983 } 984 985 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 986 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 987 988 if (defpvid >= VLAN_VID_MASK) 989 return -EINVAL; 990 } 991 #endif 992 993 return 0; 994 } 995 996 static int br_port_slave_changelink(struct net_device *brdev, 997 struct net_device *dev, 998 struct nlattr *tb[], 999 struct nlattr *data[], 1000 struct netlink_ext_ack *extack) 1001 { 1002 struct net_bridge *br = netdev_priv(brdev); 1003 int ret; 1004 1005 if (!data) 1006 return 0; 1007 1008 spin_lock_bh(&br->lock); 1009 ret = br_setport(br_port_get_rtnl(dev), data); 1010 spin_unlock_bh(&br->lock); 1011 1012 return ret; 1013 } 1014 1015 static int br_port_fill_slave_info(struct sk_buff *skb, 1016 const struct net_device *brdev, 1017 const struct net_device *dev) 1018 { 1019 return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); 1020 } 1021 1022 static size_t br_port_get_slave_size(const struct net_device *brdev, 1023 const struct net_device *dev) 1024 { 1025 return br_port_info_size(); 1026 } 1027 1028 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { 1029 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, 1030 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, 1031 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, 1032 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, 1033 [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, 1034 [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, 1035 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, 1036 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, 1037 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, 1038 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, 1039 .len = ETH_ALEN }, 1040 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, 1041 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, 1042 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, 1043 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, 1044 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, 1045 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, 1046 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 1047 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 1048 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 1049 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 1050 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 1051 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 1052 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 1053 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 1054 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, 1055 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, 1056 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, 1057 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, 1058 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, 1059 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 }, 1060 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, 1061 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 }, 1062 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 }, 1063 [IFLA_BR_MULTI_BOOLOPT] = { .type = NLA_EXACT_LEN, 1064 .len = sizeof(struct br_boolopt_multi) }, 1065 }; 1066 1067 static int br_changelink(struct net_device *brdev, struct nlattr *tb[], 1068 struct nlattr *data[], 1069 struct netlink_ext_ack *extack) 1070 { 1071 struct net_bridge *br = netdev_priv(brdev); 1072 int err; 1073 1074 if (!data) 1075 return 0; 1076 1077 if (data[IFLA_BR_FORWARD_DELAY]) { 1078 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); 1079 if (err) 1080 return err; 1081 } 1082 1083 if (data[IFLA_BR_HELLO_TIME]) { 1084 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); 1085 if (err) 1086 return err; 1087 } 1088 1089 if (data[IFLA_BR_MAX_AGE]) { 1090 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); 1091 if (err) 1092 return err; 1093 } 1094 1095 if (data[IFLA_BR_AGEING_TIME]) { 1096 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); 1097 if (err) 1098 return err; 1099 } 1100 1101 if (data[IFLA_BR_STP_STATE]) { 1102 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); 1103 1104 br_stp_set_enabled(br, stp_enabled); 1105 } 1106 1107 if (data[IFLA_BR_PRIORITY]) { 1108 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); 1109 1110 br_stp_set_bridge_priority(br, priority); 1111 } 1112 1113 if (data[IFLA_BR_VLAN_FILTERING]) { 1114 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); 1115 1116 err = __br_vlan_filter_toggle(br, vlan_filter); 1117 if (err) 1118 return err; 1119 } 1120 1121 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1122 if (data[IFLA_BR_VLAN_PROTOCOL]) { 1123 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); 1124 1125 err = __br_vlan_set_proto(br, vlan_proto); 1126 if (err) 1127 return err; 1128 } 1129 1130 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1131 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1132 1133 err = __br_vlan_set_default_pvid(br, defpvid, extack); 1134 if (err) 1135 return err; 1136 } 1137 1138 if (data[IFLA_BR_VLAN_STATS_ENABLED]) { 1139 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); 1140 1141 err = br_vlan_set_stats(br, vlan_stats); 1142 if (err) 1143 return err; 1144 } 1145 1146 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) { 1147 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]); 1148 1149 err = br_vlan_set_stats_per_port(br, per_port); 1150 if (err) 1151 return err; 1152 } 1153 #endif 1154 1155 if (data[IFLA_BR_GROUP_FWD_MASK]) { 1156 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); 1157 1158 if (fwd_mask & BR_GROUPFWD_RESTRICTED) 1159 return -EINVAL; 1160 br->group_fwd_mask = fwd_mask; 1161 } 1162 1163 if (data[IFLA_BR_GROUP_ADDR]) { 1164 u8 new_addr[ETH_ALEN]; 1165 1166 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) 1167 return -EINVAL; 1168 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); 1169 if (!is_link_local_ether_addr(new_addr)) 1170 return -EINVAL; 1171 if (new_addr[5] == 1 || /* 802.3x Pause address */ 1172 new_addr[5] == 2 || /* 802.3ad Slow protocols */ 1173 new_addr[5] == 3) /* 802.1X PAE address */ 1174 return -EINVAL; 1175 spin_lock_bh(&br->lock); 1176 memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); 1177 spin_unlock_bh(&br->lock); 1178 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); 1179 br_recalculate_fwd_mask(br); 1180 } 1181 1182 if (data[IFLA_BR_FDB_FLUSH]) 1183 br_fdb_flush(br); 1184 1185 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1186 if (data[IFLA_BR_MCAST_ROUTER]) { 1187 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); 1188 1189 err = br_multicast_set_router(br, multicast_router); 1190 if (err) 1191 return err; 1192 } 1193 1194 if (data[IFLA_BR_MCAST_SNOOPING]) { 1195 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); 1196 1197 br_multicast_toggle(br, mcast_snooping); 1198 } 1199 1200 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { 1201 u8 val; 1202 1203 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); 1204 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); 1205 } 1206 1207 if (data[IFLA_BR_MCAST_QUERIER]) { 1208 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); 1209 1210 err = br_multicast_set_querier(br, mcast_querier); 1211 if (err) 1212 return err; 1213 } 1214 1215 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) 1216 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n", 1217 RHT_ELASTICITY); 1218 1219 if (data[IFLA_BR_MCAST_HASH_MAX]) 1220 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); 1221 1222 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { 1223 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); 1224 1225 br->multicast_last_member_count = val; 1226 } 1227 1228 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { 1229 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); 1230 1231 br->multicast_startup_query_count = val; 1232 } 1233 1234 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { 1235 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); 1236 1237 br->multicast_last_member_interval = clock_t_to_jiffies(val); 1238 } 1239 1240 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { 1241 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); 1242 1243 br->multicast_membership_interval = clock_t_to_jiffies(val); 1244 } 1245 1246 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { 1247 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); 1248 1249 br->multicast_querier_interval = clock_t_to_jiffies(val); 1250 } 1251 1252 if (data[IFLA_BR_MCAST_QUERY_INTVL]) { 1253 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); 1254 1255 br->multicast_query_interval = clock_t_to_jiffies(val); 1256 } 1257 1258 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { 1259 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); 1260 1261 br->multicast_query_response_interval = clock_t_to_jiffies(val); 1262 } 1263 1264 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { 1265 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); 1266 1267 br->multicast_startup_query_interval = clock_t_to_jiffies(val); 1268 } 1269 1270 if (data[IFLA_BR_MCAST_STATS_ENABLED]) { 1271 __u8 mcast_stats; 1272 1273 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]); 1274 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats); 1275 } 1276 1277 if (data[IFLA_BR_MCAST_IGMP_VERSION]) { 1278 __u8 igmp_version; 1279 1280 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]); 1281 err = br_multicast_set_igmp_version(br, igmp_version); 1282 if (err) 1283 return err; 1284 } 1285 1286 #if IS_ENABLED(CONFIG_IPV6) 1287 if (data[IFLA_BR_MCAST_MLD_VERSION]) { 1288 __u8 mld_version; 1289 1290 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]); 1291 err = br_multicast_set_mld_version(br, mld_version); 1292 if (err) 1293 return err; 1294 } 1295 #endif 1296 #endif 1297 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1298 if (data[IFLA_BR_NF_CALL_IPTABLES]) { 1299 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); 1300 1301 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); 1302 } 1303 1304 if (data[IFLA_BR_NF_CALL_IP6TABLES]) { 1305 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); 1306 1307 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); 1308 } 1309 1310 if (data[IFLA_BR_NF_CALL_ARPTABLES]) { 1311 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); 1312 1313 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); 1314 } 1315 #endif 1316 1317 if (data[IFLA_BR_MULTI_BOOLOPT]) { 1318 struct br_boolopt_multi *bm; 1319 1320 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]); 1321 err = br_boolopt_multi_toggle(br, bm, extack); 1322 if (err) 1323 return err; 1324 } 1325 1326 return 0; 1327 } 1328 1329 static int br_dev_newlink(struct net *src_net, struct net_device *dev, 1330 struct nlattr *tb[], struct nlattr *data[], 1331 struct netlink_ext_ack *extack) 1332 { 1333 struct net_bridge *br = netdev_priv(dev); 1334 int err; 1335 1336 err = register_netdevice(dev); 1337 if (err) 1338 return err; 1339 1340 if (tb[IFLA_ADDRESS]) { 1341 spin_lock_bh(&br->lock); 1342 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); 1343 spin_unlock_bh(&br->lock); 1344 } 1345 1346 err = br_changelink(dev, tb, data, extack); 1347 if (err) 1348 br_dev_delete(dev, NULL); 1349 1350 return err; 1351 } 1352 1353 static size_t br_get_size(const struct net_device *brdev) 1354 { 1355 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ 1356 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ 1357 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ 1358 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ 1359 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ 1360 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ 1361 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ 1362 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1363 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ 1364 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ 1365 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ 1366 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */ 1367 #endif 1368 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ 1369 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ 1370 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ 1371 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ 1372 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ 1373 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ 1374 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ 1375 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ 1376 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ 1377 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ 1378 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ 1379 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ 1380 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1381 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ 1382 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ 1383 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ 1384 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ 1385 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */ 1386 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ 1387 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ 1388 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ 1389 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ 1390 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ 1391 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ 1392 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ 1393 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ 1394 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ 1395 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ 1396 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */ 1397 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */ 1398 #endif 1399 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1400 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ 1401 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ 1402 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ 1403 #endif 1404 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */ 1405 0; 1406 } 1407 1408 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) 1409 { 1410 struct net_bridge *br = netdev_priv(brdev); 1411 u32 forward_delay = jiffies_to_clock_t(br->forward_delay); 1412 u32 hello_time = jiffies_to_clock_t(br->hello_time); 1413 u32 age_time = jiffies_to_clock_t(br->max_age); 1414 u32 ageing_time = jiffies_to_clock_t(br->ageing_time); 1415 u32 stp_enabled = br->stp_enabled; 1416 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; 1417 u8 vlan_enabled = br_vlan_enabled(br->dev); 1418 struct br_boolopt_multi bm; 1419 u64 clockval; 1420 1421 clockval = br_timer_value(&br->hello_timer); 1422 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) 1423 return -EMSGSIZE; 1424 clockval = br_timer_value(&br->tcn_timer); 1425 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) 1426 return -EMSGSIZE; 1427 clockval = br_timer_value(&br->topology_change_timer); 1428 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, 1429 IFLA_BR_PAD)) 1430 return -EMSGSIZE; 1431 clockval = br_timer_value(&br->gc_work.timer); 1432 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) 1433 return -EMSGSIZE; 1434 1435 br_boolopt_multi_get(br, &bm); 1436 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || 1437 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || 1438 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || 1439 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || 1440 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || 1441 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || 1442 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || 1443 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || 1444 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), 1445 &br->bridge_id) || 1446 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), 1447 &br->designated_root) || 1448 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || 1449 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || 1450 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || 1451 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, 1452 br->topology_change_detected) || 1453 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) || 1454 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm)) 1455 return -EMSGSIZE; 1456 1457 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1458 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || 1459 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || 1460 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, 1461 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) || 1462 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT, 1463 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT))) 1464 return -EMSGSIZE; 1465 #endif 1466 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1467 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || 1468 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, 1469 br_opt_get(br, BROPT_MULTICAST_ENABLED)) || 1470 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, 1471 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) || 1472 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, 1473 br_opt_get(br, BROPT_MULTICAST_QUERIER)) || 1474 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED, 1475 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) || 1476 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) || 1477 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || 1478 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, 1479 br->multicast_last_member_count) || 1480 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, 1481 br->multicast_startup_query_count) || 1482 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION, 1483 br->multicast_igmp_version)) 1484 return -EMSGSIZE; 1485 #if IS_ENABLED(CONFIG_IPV6) 1486 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION, 1487 br->multicast_mld_version)) 1488 return -EMSGSIZE; 1489 #endif 1490 clockval = jiffies_to_clock_t(br->multicast_last_member_interval); 1491 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, 1492 IFLA_BR_PAD)) 1493 return -EMSGSIZE; 1494 clockval = jiffies_to_clock_t(br->multicast_membership_interval); 1495 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, 1496 IFLA_BR_PAD)) 1497 return -EMSGSIZE; 1498 clockval = jiffies_to_clock_t(br->multicast_querier_interval); 1499 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, 1500 IFLA_BR_PAD)) 1501 return -EMSGSIZE; 1502 clockval = jiffies_to_clock_t(br->multicast_query_interval); 1503 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, 1504 IFLA_BR_PAD)) 1505 return -EMSGSIZE; 1506 clockval = jiffies_to_clock_t(br->multicast_query_response_interval); 1507 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, 1508 IFLA_BR_PAD)) 1509 return -EMSGSIZE; 1510 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); 1511 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, 1512 IFLA_BR_PAD)) 1513 return -EMSGSIZE; 1514 #endif 1515 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1516 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, 1517 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) || 1518 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, 1519 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) || 1520 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, 1521 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0)) 1522 return -EMSGSIZE; 1523 #endif 1524 1525 return 0; 1526 } 1527 1528 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr) 1529 { 1530 struct net_bridge_port *p = NULL; 1531 struct net_bridge_vlan_group *vg; 1532 struct net_bridge_vlan *v; 1533 struct net_bridge *br; 1534 int numvls = 0; 1535 1536 switch (attr) { 1537 case IFLA_STATS_LINK_XSTATS: 1538 br = netdev_priv(dev); 1539 vg = br_vlan_group(br); 1540 break; 1541 case IFLA_STATS_LINK_XSTATS_SLAVE: 1542 p = br_port_get_rtnl(dev); 1543 if (!p) 1544 return 0; 1545 br = p->br; 1546 vg = nbp_vlan_group(p); 1547 break; 1548 default: 1549 return 0; 1550 } 1551 1552 if (vg) { 1553 /* we need to count all, even placeholder entries */ 1554 list_for_each_entry(v, &vg->vlan_list, vlist) 1555 numvls++; 1556 } 1557 1558 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + 1559 nla_total_size(sizeof(struct br_mcast_stats)) + 1560 nla_total_size(0); 1561 } 1562 1563 static int br_fill_linkxstats(struct sk_buff *skb, 1564 const struct net_device *dev, 1565 int *prividx, int attr) 1566 { 1567 struct nlattr *nla __maybe_unused; 1568 struct net_bridge_port *p = NULL; 1569 struct net_bridge_vlan_group *vg; 1570 struct net_bridge_vlan *v; 1571 struct net_bridge *br; 1572 struct nlattr *nest; 1573 int vl_idx = 0; 1574 1575 switch (attr) { 1576 case IFLA_STATS_LINK_XSTATS: 1577 br = netdev_priv(dev); 1578 vg = br_vlan_group(br); 1579 break; 1580 case IFLA_STATS_LINK_XSTATS_SLAVE: 1581 p = br_port_get_rtnl(dev); 1582 if (!p) 1583 return 0; 1584 br = p->br; 1585 vg = nbp_vlan_group(p); 1586 break; 1587 default: 1588 return -EINVAL; 1589 } 1590 1591 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE); 1592 if (!nest) 1593 return -EMSGSIZE; 1594 1595 if (vg) { 1596 u16 pvid; 1597 1598 pvid = br_get_pvid(vg); 1599 list_for_each_entry(v, &vg->vlan_list, vlist) { 1600 struct bridge_vlan_xstats vxi; 1601 struct br_vlan_stats stats; 1602 1603 if (++vl_idx < *prividx) 1604 continue; 1605 memset(&vxi, 0, sizeof(vxi)); 1606 vxi.vid = v->vid; 1607 vxi.flags = v->flags; 1608 if (v->vid == pvid) 1609 vxi.flags |= BRIDGE_VLAN_INFO_PVID; 1610 br_vlan_get_stats(v, &stats); 1611 vxi.rx_bytes = stats.rx_bytes; 1612 vxi.rx_packets = stats.rx_packets; 1613 vxi.tx_bytes = stats.tx_bytes; 1614 vxi.tx_packets = stats.tx_packets; 1615 1616 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) 1617 goto nla_put_failure; 1618 } 1619 } 1620 1621 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1622 if (++vl_idx >= *prividx) { 1623 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST, 1624 sizeof(struct br_mcast_stats), 1625 BRIDGE_XSTATS_PAD); 1626 if (!nla) 1627 goto nla_put_failure; 1628 br_multicast_get_stats(br, p, nla_data(nla)); 1629 } 1630 #endif 1631 1632 if (p) { 1633 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP, 1634 sizeof(p->stp_xstats), 1635 BRIDGE_XSTATS_PAD); 1636 if (!nla) 1637 goto nla_put_failure; 1638 1639 spin_lock_bh(&br->lock); 1640 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats)); 1641 spin_unlock_bh(&br->lock); 1642 } 1643 1644 nla_nest_end(skb, nest); 1645 *prividx = 0; 1646 1647 return 0; 1648 1649 nla_put_failure: 1650 nla_nest_end(skb, nest); 1651 *prividx = vl_idx; 1652 1653 return -EMSGSIZE; 1654 } 1655 1656 static struct rtnl_af_ops br_af_ops __read_mostly = { 1657 .family = AF_BRIDGE, 1658 .get_link_af_size = br_get_link_af_size_filtered, 1659 }; 1660 1661 struct rtnl_link_ops br_link_ops __read_mostly = { 1662 .kind = "bridge", 1663 .priv_size = sizeof(struct net_bridge), 1664 .setup = br_dev_setup, 1665 .maxtype = IFLA_BR_MAX, 1666 .policy = br_policy, 1667 .validate = br_validate, 1668 .newlink = br_dev_newlink, 1669 .changelink = br_changelink, 1670 .dellink = br_dev_delete, 1671 .get_size = br_get_size, 1672 .fill_info = br_fill_info, 1673 .fill_linkxstats = br_fill_linkxstats, 1674 .get_linkxstats_size = br_get_linkxstats_size, 1675 1676 .slave_maxtype = IFLA_BRPORT_MAX, 1677 .slave_policy = br_port_policy, 1678 .slave_changelink = br_port_slave_changelink, 1679 .get_slave_size = br_port_get_slave_size, 1680 .fill_slave_info = br_port_fill_slave_info, 1681 }; 1682 1683 int __init br_netlink_init(void) 1684 { 1685 int err; 1686 1687 br_mdb_init(); 1688 br_vlan_rtnl_init(); 1689 rtnl_af_register(&br_af_ops); 1690 1691 err = rtnl_link_register(&br_link_ops); 1692 if (err) 1693 goto out_af; 1694 1695 return 0; 1696 1697 out_af: 1698 rtnl_af_unregister(&br_af_ops); 1699 br_mdb_uninit(); 1700 return err; 1701 } 1702 1703 void br_netlink_fini(void) 1704 { 1705 br_mdb_uninit(); 1706 br_vlan_rtnl_uninit(); 1707 rtnl_af_unregister(&br_af_ops); 1708 rtnl_link_unregister(&br_link_ops); 1709 } 1710