1 /* 2 * Bridge netlink control interface 3 * 4 * Authors: 5 * Stephen Hemminger <shemminger@osdl.org> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 */ 12 13 #include <linux/kernel.h> 14 #include <linux/slab.h> 15 #include <linux/etherdevice.h> 16 #include <net/rtnetlink.h> 17 #include <net/net_namespace.h> 18 #include <net/sock.h> 19 #include <uapi/linux/if_bridge.h> 20 21 #include "br_private.h" 22 #include "br_private_stp.h" 23 #include "br_private_tunnel.h" 24 25 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg, 26 u32 filter_mask) 27 { 28 struct net_bridge_vlan *v; 29 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; 30 u16 flags, pvid; 31 int num_vlans = 0; 32 33 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) 34 return 0; 35 36 pvid = br_get_pvid(vg); 37 /* Count number of vlan infos */ 38 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 39 flags = 0; 40 /* only a context, bridge vlan not activated */ 41 if (!br_vlan_should_use(v)) 42 continue; 43 if (v->vid == pvid) 44 flags |= BRIDGE_VLAN_INFO_PVID; 45 46 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 47 flags |= BRIDGE_VLAN_INFO_UNTAGGED; 48 49 if (vid_range_start == 0) { 50 goto initvars; 51 } else if ((v->vid - vid_range_end) == 1 && 52 flags == vid_range_flags) { 53 vid_range_end = v->vid; 54 continue; 55 } else { 56 if ((vid_range_end - vid_range_start) > 0) 57 num_vlans += 2; 58 else 59 num_vlans += 1; 60 } 61 initvars: 62 vid_range_start = v->vid; 63 vid_range_end = v->vid; 64 vid_range_flags = flags; 65 } 66 67 if (vid_range_start != 0) { 68 if ((vid_range_end - vid_range_start) > 0) 69 num_vlans += 2; 70 else 71 num_vlans += 1; 72 } 73 74 return num_vlans; 75 } 76 77 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg, 78 u32 filter_mask) 79 { 80 int num_vlans; 81 82 if (!vg) 83 return 0; 84 85 if (filter_mask & RTEXT_FILTER_BRVLAN) 86 return vg->num_vlans; 87 88 rcu_read_lock(); 89 num_vlans = __get_num_vlan_infos(vg, filter_mask); 90 rcu_read_unlock(); 91 92 return num_vlans; 93 } 94 95 static size_t br_get_link_af_size_filtered(const struct net_device *dev, 96 u32 filter_mask) 97 { 98 struct net_bridge_vlan_group *vg = NULL; 99 struct net_bridge_port *p = NULL; 100 struct net_bridge *br; 101 int num_vlan_infos; 102 size_t vinfo_sz = 0; 103 104 rcu_read_lock(); 105 if (br_port_exists(dev)) { 106 p = br_port_get_rcu(dev); 107 vg = nbp_vlan_group_rcu(p); 108 } else if (dev->priv_flags & IFF_EBRIDGE) { 109 br = netdev_priv(dev); 110 vg = br_vlan_group_rcu(br); 111 } 112 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask); 113 rcu_read_unlock(); 114 115 if (p && (p->flags & BR_VLAN_TUNNEL)) 116 vinfo_sz += br_get_vlan_tunnel_info_size(vg); 117 118 /* Each VLAN is returned in bridge_vlan_info along with flags */ 119 vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); 120 121 return vinfo_sz; 122 } 123 124 static inline size_t br_port_info_size(void) 125 { 126 return nla_total_size(1) /* IFLA_BRPORT_STATE */ 127 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ 128 + nla_total_size(4) /* IFLA_BRPORT_COST */ 129 + nla_total_size(1) /* IFLA_BRPORT_MODE */ 130 + nla_total_size(1) /* IFLA_BRPORT_GUARD */ 131 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ 132 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ 133 + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */ 134 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ 135 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ 136 + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */ 137 + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */ 138 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */ 139 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */ 140 + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */ 141 + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */ 142 + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */ 143 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */ 144 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */ 145 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */ 146 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */ 147 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */ 148 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */ 149 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */ 150 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */ 151 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */ 152 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */ 153 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */ 154 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 155 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */ 156 #endif 157 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */ 158 + 0; 159 } 160 161 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) 162 { 163 return NLMSG_ALIGN(sizeof(struct ifinfomsg)) 164 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ 165 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ 166 + nla_total_size(4) /* IFLA_MASTER */ 167 + nla_total_size(4) /* IFLA_MTU */ 168 + nla_total_size(4) /* IFLA_LINK */ 169 + nla_total_size(1) /* IFLA_OPERSTATE */ 170 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ 171 + nla_total_size(br_get_link_af_size_filtered(dev, 172 filter_mask)) /* IFLA_AF_SPEC */ 173 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */ 174 } 175 176 static int br_port_fill_attrs(struct sk_buff *skb, 177 const struct net_bridge_port *p) 178 { 179 u8 mode = !!(p->flags & BR_HAIRPIN_MODE); 180 struct net_bridge_port *backup_p; 181 u64 timerval; 182 183 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || 184 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || 185 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || 186 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || 187 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || 188 nla_put_u8(skb, IFLA_BRPORT_PROTECT, 189 !!(p->flags & BR_ROOT_BLOCK)) || 190 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, 191 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || 192 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST, 193 !!(p->flags & BR_MULTICAST_TO_UNICAST)) || 194 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || 195 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, 196 !!(p->flags & BR_FLOOD)) || 197 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD, 198 !!(p->flags & BR_MCAST_FLOOD)) || 199 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD, 200 !!(p->flags & BR_BCAST_FLOOD)) || 201 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || 202 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, 203 !!(p->flags & BR_PROXYARP_WIFI)) || 204 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id), 205 &p->designated_root) || 206 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id), 207 &p->designated_bridge) || 208 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) || 209 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) || 210 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) || 211 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) || 212 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, 213 p->topology_change_ack) || 214 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) || 215 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags & 216 BR_VLAN_TUNNEL)) || 217 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) || 218 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS, 219 !!(p->flags & BR_NEIGH_SUPPRESS)) || 220 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED))) 221 return -EMSGSIZE; 222 223 timerval = br_timer_value(&p->message_age_timer); 224 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval, 225 IFLA_BRPORT_PAD)) 226 return -EMSGSIZE; 227 timerval = br_timer_value(&p->forward_delay_timer); 228 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval, 229 IFLA_BRPORT_PAD)) 230 return -EMSGSIZE; 231 timerval = br_timer_value(&p->hold_timer); 232 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval, 233 IFLA_BRPORT_PAD)) 234 return -EMSGSIZE; 235 236 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 237 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER, 238 p->multicast_router)) 239 return -EMSGSIZE; 240 #endif 241 242 /* we might be called only with br->lock */ 243 rcu_read_lock(); 244 backup_p = rcu_dereference(p->backup_port); 245 if (backup_p) 246 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT, 247 backup_p->dev->ifindex); 248 rcu_read_unlock(); 249 250 return 0; 251 } 252 253 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, 254 u16 vid_end, u16 flags) 255 { 256 struct bridge_vlan_info vinfo; 257 258 if ((vid_end - vid_start) > 0) { 259 /* add range to skb */ 260 vinfo.vid = vid_start; 261 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; 262 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 263 sizeof(vinfo), &vinfo)) 264 goto nla_put_failure; 265 266 vinfo.vid = vid_end; 267 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; 268 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 269 sizeof(vinfo), &vinfo)) 270 goto nla_put_failure; 271 } else { 272 vinfo.vid = vid_start; 273 vinfo.flags = flags; 274 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 275 sizeof(vinfo), &vinfo)) 276 goto nla_put_failure; 277 } 278 279 return 0; 280 281 nla_put_failure: 282 return -EMSGSIZE; 283 } 284 285 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, 286 struct net_bridge_vlan_group *vg) 287 { 288 struct net_bridge_vlan *v; 289 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; 290 u16 flags, pvid; 291 int err = 0; 292 293 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan 294 * and mark vlan info with begin and end flags 295 * if vlaninfo represents a range 296 */ 297 pvid = br_get_pvid(vg); 298 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 299 flags = 0; 300 if (!br_vlan_should_use(v)) 301 continue; 302 if (v->vid == pvid) 303 flags |= BRIDGE_VLAN_INFO_PVID; 304 305 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 306 flags |= BRIDGE_VLAN_INFO_UNTAGGED; 307 308 if (vid_range_start == 0) { 309 goto initvars; 310 } else if ((v->vid - vid_range_end) == 1 && 311 flags == vid_range_flags) { 312 vid_range_end = v->vid; 313 continue; 314 } else { 315 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 316 vid_range_end, 317 vid_range_flags); 318 if (err) 319 return err; 320 } 321 322 initvars: 323 vid_range_start = v->vid; 324 vid_range_end = v->vid; 325 vid_range_flags = flags; 326 } 327 328 if (vid_range_start != 0) { 329 /* Call it once more to send any left over vlans */ 330 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 331 vid_range_end, 332 vid_range_flags); 333 if (err) 334 return err; 335 } 336 337 return 0; 338 } 339 340 static int br_fill_ifvlaninfo(struct sk_buff *skb, 341 struct net_bridge_vlan_group *vg) 342 { 343 struct bridge_vlan_info vinfo; 344 struct net_bridge_vlan *v; 345 u16 pvid; 346 347 pvid = br_get_pvid(vg); 348 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 349 if (!br_vlan_should_use(v)) 350 continue; 351 352 vinfo.vid = v->vid; 353 vinfo.flags = 0; 354 if (v->vid == pvid) 355 vinfo.flags |= BRIDGE_VLAN_INFO_PVID; 356 357 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 358 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; 359 360 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 361 sizeof(vinfo), &vinfo)) 362 goto nla_put_failure; 363 } 364 365 return 0; 366 367 nla_put_failure: 368 return -EMSGSIZE; 369 } 370 371 /* 372 * Create one netlink message for one interface 373 * Contains port and master info as well as carrier and bridge state. 374 */ 375 static int br_fill_ifinfo(struct sk_buff *skb, 376 const struct net_bridge_port *port, 377 u32 pid, u32 seq, int event, unsigned int flags, 378 u32 filter_mask, const struct net_device *dev) 379 { 380 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; 381 struct net_bridge *br; 382 struct ifinfomsg *hdr; 383 struct nlmsghdr *nlh; 384 385 if (port) 386 br = port->br; 387 else 388 br = netdev_priv(dev); 389 390 br_debug(br, "br_fill_info event %d port %s master %s\n", 391 event, dev->name, br->dev->name); 392 393 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); 394 if (nlh == NULL) 395 return -EMSGSIZE; 396 397 hdr = nlmsg_data(nlh); 398 hdr->ifi_family = AF_BRIDGE; 399 hdr->__ifi_pad = 0; 400 hdr->ifi_type = dev->type; 401 hdr->ifi_index = dev->ifindex; 402 hdr->ifi_flags = dev_get_flags(dev); 403 hdr->ifi_change = 0; 404 405 if (nla_put_string(skb, IFLA_IFNAME, dev->name) || 406 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || 407 nla_put_u32(skb, IFLA_MTU, dev->mtu) || 408 nla_put_u8(skb, IFLA_OPERSTATE, operstate) || 409 (dev->addr_len && 410 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || 411 (dev->ifindex != dev_get_iflink(dev) && 412 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) 413 goto nla_put_failure; 414 415 if (event == RTM_NEWLINK && port) { 416 struct nlattr *nest 417 = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); 418 419 if (nest == NULL || br_port_fill_attrs(skb, port) < 0) 420 goto nla_put_failure; 421 nla_nest_end(skb, nest); 422 } 423 424 /* Check if the VID information is requested */ 425 if ((filter_mask & RTEXT_FILTER_BRVLAN) || 426 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { 427 struct net_bridge_vlan_group *vg; 428 struct nlattr *af; 429 int err; 430 431 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */ 432 rcu_read_lock(); 433 if (port) 434 vg = nbp_vlan_group_rcu(port); 435 else 436 vg = br_vlan_group_rcu(br); 437 438 if (!vg || !vg->num_vlans) { 439 rcu_read_unlock(); 440 goto done; 441 } 442 af = nla_nest_start(skb, IFLA_AF_SPEC); 443 if (!af) { 444 rcu_read_unlock(); 445 goto nla_put_failure; 446 } 447 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) 448 err = br_fill_ifvlaninfo_compressed(skb, vg); 449 else 450 err = br_fill_ifvlaninfo(skb, vg); 451 452 if (port && (port->flags & BR_VLAN_TUNNEL)) 453 err = br_fill_vlan_tunnel_info(skb, vg); 454 rcu_read_unlock(); 455 if (err) 456 goto nla_put_failure; 457 nla_nest_end(skb, af); 458 } 459 460 done: 461 nlmsg_end(skb, nlh); 462 return 0; 463 464 nla_put_failure: 465 nlmsg_cancel(skb, nlh); 466 return -EMSGSIZE; 467 } 468 469 /* Notify listeners of a change in bridge or port information */ 470 void br_ifinfo_notify(int event, const struct net_bridge *br, 471 const struct net_bridge_port *port) 472 { 473 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; 474 struct net_device *dev; 475 struct sk_buff *skb; 476 int err = -ENOBUFS; 477 struct net *net; 478 u16 port_no = 0; 479 480 if (WARN_ON(!port && !br)) 481 return; 482 483 if (port) { 484 dev = port->dev; 485 br = port->br; 486 port_no = port->port_no; 487 } else { 488 dev = br->dev; 489 } 490 491 net = dev_net(dev); 492 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event); 493 494 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC); 495 if (skb == NULL) 496 goto errout; 497 498 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev); 499 if (err < 0) { 500 /* -EMSGSIZE implies BUG in br_nlmsg_size() */ 501 WARN_ON(err == -EMSGSIZE); 502 kfree_skb(skb); 503 goto errout; 504 } 505 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); 506 return; 507 errout: 508 rtnl_set_sk_err(net, RTNLGRP_LINK, err); 509 } 510 511 /* 512 * Dump information about all ports, in response to GETLINK 513 */ 514 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, 515 struct net_device *dev, u32 filter_mask, int nlflags) 516 { 517 struct net_bridge_port *port = br_port_get_rtnl(dev); 518 519 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && 520 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) 521 return 0; 522 523 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, 524 filter_mask, dev); 525 } 526 527 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, 528 int cmd, struct bridge_vlan_info *vinfo, bool *changed, 529 struct netlink_ext_ack *extack) 530 { 531 bool curr_change; 532 int err = 0; 533 534 switch (cmd) { 535 case RTM_SETLINK: 536 if (p) { 537 /* if the MASTER flag is set this will act on the global 538 * per-VLAN entry as well 539 */ 540 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags, 541 &curr_change, extack); 542 } else { 543 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; 544 err = br_vlan_add(br, vinfo->vid, vinfo->flags, 545 &curr_change, extack); 546 } 547 if (curr_change) 548 *changed = true; 549 break; 550 551 case RTM_DELLINK: 552 if (p) { 553 if (!nbp_vlan_delete(p, vinfo->vid)) 554 *changed = true; 555 556 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) && 557 !br_vlan_delete(p->br, vinfo->vid)) 558 *changed = true; 559 } else if (!br_vlan_delete(br, vinfo->vid)) { 560 *changed = true; 561 } 562 break; 563 } 564 565 return err; 566 } 567 568 static int br_process_vlan_info(struct net_bridge *br, 569 struct net_bridge_port *p, int cmd, 570 struct bridge_vlan_info *vinfo_curr, 571 struct bridge_vlan_info **vinfo_last, 572 bool *changed, 573 struct netlink_ext_ack *extack) 574 { 575 if (!vinfo_curr->vid || vinfo_curr->vid >= VLAN_VID_MASK) 576 return -EINVAL; 577 578 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 579 /* check if we are already processing a range */ 580 if (*vinfo_last) 581 return -EINVAL; 582 *vinfo_last = vinfo_curr; 583 /* don't allow range of pvids */ 584 if ((*vinfo_last)->flags & BRIDGE_VLAN_INFO_PVID) 585 return -EINVAL; 586 return 0; 587 } 588 589 if (*vinfo_last) { 590 struct bridge_vlan_info tmp_vinfo; 591 int v, err; 592 593 if (!(vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END)) 594 return -EINVAL; 595 596 if (vinfo_curr->vid <= (*vinfo_last)->vid) 597 return -EINVAL; 598 599 memcpy(&tmp_vinfo, *vinfo_last, 600 sizeof(struct bridge_vlan_info)); 601 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) { 602 tmp_vinfo.vid = v; 603 err = br_vlan_info(br, p, cmd, &tmp_vinfo, changed, 604 extack); 605 if (err) 606 break; 607 } 608 *vinfo_last = NULL; 609 610 return err; 611 } 612 613 return br_vlan_info(br, p, cmd, vinfo_curr, changed, extack); 614 } 615 616 static int br_afspec(struct net_bridge *br, 617 struct net_bridge_port *p, 618 struct nlattr *af_spec, 619 int cmd, bool *changed, 620 struct netlink_ext_ack *extack) 621 { 622 struct bridge_vlan_info *vinfo_curr = NULL; 623 struct bridge_vlan_info *vinfo_last = NULL; 624 struct nlattr *attr; 625 struct vtunnel_info tinfo_last = {}; 626 struct vtunnel_info tinfo_curr = {}; 627 int err = 0, rem; 628 629 nla_for_each_nested(attr, af_spec, rem) { 630 err = 0; 631 switch (nla_type(attr)) { 632 case IFLA_BRIDGE_VLAN_TUNNEL_INFO: 633 if (!p || !(p->flags & BR_VLAN_TUNNEL)) 634 return -EINVAL; 635 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr); 636 if (err) 637 return err; 638 err = br_process_vlan_tunnel_info(br, p, cmd, 639 &tinfo_curr, 640 &tinfo_last, 641 changed); 642 if (err) 643 return err; 644 break; 645 case IFLA_BRIDGE_VLAN_INFO: 646 if (nla_len(attr) != sizeof(struct bridge_vlan_info)) 647 return -EINVAL; 648 vinfo_curr = nla_data(attr); 649 err = br_process_vlan_info(br, p, cmd, vinfo_curr, 650 &vinfo_last, changed, 651 extack); 652 if (err) 653 return err; 654 break; 655 } 656 } 657 658 return err; 659 } 660 661 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { 662 [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, 663 [IFLA_BRPORT_COST] = { .type = NLA_U32 }, 664 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, 665 [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, 666 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, 667 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, 668 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, 669 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, 670 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, 671 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, 672 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, 673 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, 674 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 }, 675 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 }, 676 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 }, 677 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 }, 678 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 }, 679 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 }, 680 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 }, 681 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 }, 682 }; 683 684 /* Change the state of the port and notify spanning tree */ 685 static int br_set_port_state(struct net_bridge_port *p, u8 state) 686 { 687 if (state > BR_STATE_BLOCKING) 688 return -EINVAL; 689 690 /* if kernel STP is running, don't allow changes */ 691 if (p->br->stp_enabled == BR_KERNEL_STP) 692 return -EBUSY; 693 694 /* if device is not up, change is not allowed 695 * if link is not present, only allowable state is disabled 696 */ 697 if (!netif_running(p->dev) || 698 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) 699 return -ENETDOWN; 700 701 br_set_state(p, state); 702 br_port_state_selection(p->br); 703 return 0; 704 } 705 706 /* Set/clear or port flags based on attribute */ 707 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], 708 int attrtype, unsigned long mask) 709 { 710 unsigned long flags; 711 int err; 712 713 if (!tb[attrtype]) 714 return 0; 715 716 if (nla_get_u8(tb[attrtype])) 717 flags = p->flags | mask; 718 else 719 flags = p->flags & ~mask; 720 721 err = br_switchdev_set_port_flag(p, flags, mask); 722 if (err) 723 return err; 724 725 p->flags = flags; 726 return 0; 727 } 728 729 /* Process bridge protocol info on port */ 730 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) 731 { 732 unsigned long old_flags = p->flags; 733 bool br_vlan_tunnel_old = false; 734 int err; 735 736 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); 737 if (err) 738 return err; 739 740 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); 741 if (err) 742 return err; 743 744 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); 745 if (err) 746 return err; 747 748 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); 749 if (err) 750 return err; 751 752 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); 753 if (err) 754 return err; 755 756 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); 757 if (err) 758 return err; 759 760 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); 761 if (err) 762 return err; 763 764 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); 765 if (err) 766 return err; 767 768 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); 769 if (err) 770 return err; 771 772 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); 773 if (err) 774 return err; 775 776 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); 777 if (err) 778 return err; 779 780 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; 781 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); 782 if (err) 783 return err; 784 785 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) 786 nbp_vlan_tunnel_info_flush(p); 787 788 if (tb[IFLA_BRPORT_COST]) { 789 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); 790 if (err) 791 return err; 792 } 793 794 if (tb[IFLA_BRPORT_PRIORITY]) { 795 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); 796 if (err) 797 return err; 798 } 799 800 if (tb[IFLA_BRPORT_STATE]) { 801 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); 802 if (err) 803 return err; 804 } 805 806 if (tb[IFLA_BRPORT_FLUSH]) 807 br_fdb_delete_by_port(p->br, p, 0, 0); 808 809 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 810 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { 811 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); 812 813 err = br_multicast_set_port_router(p, mcast_router); 814 if (err) 815 return err; 816 } 817 #endif 818 819 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) { 820 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]); 821 822 if (fwd_mask & BR_GROUPFWD_MACPAUSE) 823 return -EINVAL; 824 p->group_fwd_mask = fwd_mask; 825 } 826 827 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, 828 BR_NEIGH_SUPPRESS); 829 if (err) 830 return err; 831 832 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); 833 if (err) 834 return err; 835 836 if (tb[IFLA_BRPORT_BACKUP_PORT]) { 837 struct net_device *backup_dev = NULL; 838 u32 backup_ifindex; 839 840 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]); 841 if (backup_ifindex) { 842 backup_dev = __dev_get_by_index(dev_net(p->dev), 843 backup_ifindex); 844 if (!backup_dev) 845 return -ENOENT; 846 } 847 848 err = nbp_backup_change(p, backup_dev); 849 if (err) 850 return err; 851 } 852 853 br_port_flags_change(p, old_flags ^ p->flags); 854 return 0; 855 } 856 857 /* Change state and parameters on port. */ 858 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, 859 struct netlink_ext_ack *extack) 860 { 861 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 862 struct nlattr *tb[IFLA_BRPORT_MAX + 1]; 863 struct net_bridge_port *p; 864 struct nlattr *protinfo; 865 struct nlattr *afspec; 866 bool changed = false; 867 int err = 0; 868 869 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); 870 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 871 if (!protinfo && !afspec) 872 return 0; 873 874 p = br_port_get_rtnl(dev); 875 /* We want to accept dev as bridge itself if the AF_SPEC 876 * is set to see if someone is setting vlan info on the bridge 877 */ 878 if (!p && !afspec) 879 return -EINVAL; 880 881 if (p && protinfo) { 882 if (protinfo->nla_type & NLA_F_NESTED) { 883 err = nla_parse_nested(tb, IFLA_BRPORT_MAX, protinfo, 884 br_port_policy, NULL); 885 if (err) 886 return err; 887 888 spin_lock_bh(&p->br->lock); 889 err = br_setport(p, tb); 890 spin_unlock_bh(&p->br->lock); 891 } else { 892 /* Binary compatibility with old RSTP */ 893 if (nla_len(protinfo) < sizeof(u8)) 894 return -EINVAL; 895 896 spin_lock_bh(&p->br->lock); 897 err = br_set_port_state(p, nla_get_u8(protinfo)); 898 spin_unlock_bh(&p->br->lock); 899 } 900 if (err) 901 goto out; 902 changed = true; 903 } 904 905 if (afspec) 906 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack); 907 908 if (changed) 909 br_ifinfo_notify(RTM_NEWLINK, br, p); 910 out: 911 return err; 912 } 913 914 /* Delete port information */ 915 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) 916 { 917 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 918 struct net_bridge_port *p; 919 struct nlattr *afspec; 920 bool changed = false; 921 int err = 0; 922 923 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 924 if (!afspec) 925 return 0; 926 927 p = br_port_get_rtnl(dev); 928 /* We want to accept dev as bridge itself as well */ 929 if (!p && !(dev->priv_flags & IFF_EBRIDGE)) 930 return -EINVAL; 931 932 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL); 933 if (changed) 934 /* Send RTM_NEWLINK because userspace 935 * expects RTM_NEWLINK for vlan dels 936 */ 937 br_ifinfo_notify(RTM_NEWLINK, br, p); 938 939 return err; 940 } 941 942 static int br_validate(struct nlattr *tb[], struct nlattr *data[], 943 struct netlink_ext_ack *extack) 944 { 945 if (tb[IFLA_ADDRESS]) { 946 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 947 return -EINVAL; 948 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 949 return -EADDRNOTAVAIL; 950 } 951 952 if (!data) 953 return 0; 954 955 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 956 if (data[IFLA_BR_VLAN_PROTOCOL]) { 957 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) { 958 case htons(ETH_P_8021Q): 959 case htons(ETH_P_8021AD): 960 break; 961 default: 962 return -EPROTONOSUPPORT; 963 } 964 } 965 966 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 967 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 968 969 if (defpvid >= VLAN_VID_MASK) 970 return -EINVAL; 971 } 972 #endif 973 974 return 0; 975 } 976 977 static int br_port_slave_changelink(struct net_device *brdev, 978 struct net_device *dev, 979 struct nlattr *tb[], 980 struct nlattr *data[], 981 struct netlink_ext_ack *extack) 982 { 983 struct net_bridge *br = netdev_priv(brdev); 984 int ret; 985 986 if (!data) 987 return 0; 988 989 spin_lock_bh(&br->lock); 990 ret = br_setport(br_port_get_rtnl(dev), data); 991 spin_unlock_bh(&br->lock); 992 993 return ret; 994 } 995 996 static int br_port_fill_slave_info(struct sk_buff *skb, 997 const struct net_device *brdev, 998 const struct net_device *dev) 999 { 1000 return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); 1001 } 1002 1003 static size_t br_port_get_slave_size(const struct net_device *brdev, 1004 const struct net_device *dev) 1005 { 1006 return br_port_info_size(); 1007 } 1008 1009 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { 1010 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, 1011 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, 1012 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, 1013 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, 1014 [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, 1015 [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, 1016 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, 1017 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, 1018 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, 1019 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, 1020 .len = ETH_ALEN }, 1021 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, 1022 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, 1023 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, 1024 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, 1025 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, 1026 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, 1027 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 1028 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 1029 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 1030 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 1031 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 1032 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 1033 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 1034 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 1035 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, 1036 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, 1037 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, 1038 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, 1039 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, 1040 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 }, 1041 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, 1042 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 }, 1043 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 }, 1044 [IFLA_BR_MULTI_BOOLOPT] = { .type = NLA_EXACT_LEN, 1045 .len = sizeof(struct br_boolopt_multi) }, 1046 }; 1047 1048 static int br_changelink(struct net_device *brdev, struct nlattr *tb[], 1049 struct nlattr *data[], 1050 struct netlink_ext_ack *extack) 1051 { 1052 struct net_bridge *br = netdev_priv(brdev); 1053 int err; 1054 1055 if (!data) 1056 return 0; 1057 1058 if (data[IFLA_BR_FORWARD_DELAY]) { 1059 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); 1060 if (err) 1061 return err; 1062 } 1063 1064 if (data[IFLA_BR_HELLO_TIME]) { 1065 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); 1066 if (err) 1067 return err; 1068 } 1069 1070 if (data[IFLA_BR_MAX_AGE]) { 1071 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); 1072 if (err) 1073 return err; 1074 } 1075 1076 if (data[IFLA_BR_AGEING_TIME]) { 1077 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); 1078 if (err) 1079 return err; 1080 } 1081 1082 if (data[IFLA_BR_STP_STATE]) { 1083 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); 1084 1085 br_stp_set_enabled(br, stp_enabled); 1086 } 1087 1088 if (data[IFLA_BR_PRIORITY]) { 1089 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); 1090 1091 br_stp_set_bridge_priority(br, priority); 1092 } 1093 1094 if (data[IFLA_BR_VLAN_FILTERING]) { 1095 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); 1096 1097 err = __br_vlan_filter_toggle(br, vlan_filter); 1098 if (err) 1099 return err; 1100 } 1101 1102 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1103 if (data[IFLA_BR_VLAN_PROTOCOL]) { 1104 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); 1105 1106 err = __br_vlan_set_proto(br, vlan_proto); 1107 if (err) 1108 return err; 1109 } 1110 1111 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1112 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1113 1114 err = __br_vlan_set_default_pvid(br, defpvid, extack); 1115 if (err) 1116 return err; 1117 } 1118 1119 if (data[IFLA_BR_VLAN_STATS_ENABLED]) { 1120 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); 1121 1122 err = br_vlan_set_stats(br, vlan_stats); 1123 if (err) 1124 return err; 1125 } 1126 1127 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) { 1128 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]); 1129 1130 err = br_vlan_set_stats_per_port(br, per_port); 1131 if (err) 1132 return err; 1133 } 1134 #endif 1135 1136 if (data[IFLA_BR_GROUP_FWD_MASK]) { 1137 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); 1138 1139 if (fwd_mask & BR_GROUPFWD_RESTRICTED) 1140 return -EINVAL; 1141 br->group_fwd_mask = fwd_mask; 1142 } 1143 1144 if (data[IFLA_BR_GROUP_ADDR]) { 1145 u8 new_addr[ETH_ALEN]; 1146 1147 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) 1148 return -EINVAL; 1149 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); 1150 if (!is_link_local_ether_addr(new_addr)) 1151 return -EINVAL; 1152 if (new_addr[5] == 1 || /* 802.3x Pause address */ 1153 new_addr[5] == 2 || /* 802.3ad Slow protocols */ 1154 new_addr[5] == 3) /* 802.1X PAE address */ 1155 return -EINVAL; 1156 spin_lock_bh(&br->lock); 1157 memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); 1158 spin_unlock_bh(&br->lock); 1159 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); 1160 br_recalculate_fwd_mask(br); 1161 } 1162 1163 if (data[IFLA_BR_FDB_FLUSH]) 1164 br_fdb_flush(br); 1165 1166 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1167 if (data[IFLA_BR_MCAST_ROUTER]) { 1168 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); 1169 1170 err = br_multicast_set_router(br, multicast_router); 1171 if (err) 1172 return err; 1173 } 1174 1175 if (data[IFLA_BR_MCAST_SNOOPING]) { 1176 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); 1177 1178 br_multicast_toggle(br, mcast_snooping); 1179 } 1180 1181 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { 1182 u8 val; 1183 1184 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); 1185 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); 1186 } 1187 1188 if (data[IFLA_BR_MCAST_QUERIER]) { 1189 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); 1190 1191 err = br_multicast_set_querier(br, mcast_querier); 1192 if (err) 1193 return err; 1194 } 1195 1196 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) 1197 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n", 1198 RHT_ELASTICITY); 1199 1200 if (data[IFLA_BR_MCAST_HASH_MAX]) 1201 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); 1202 1203 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { 1204 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); 1205 1206 br->multicast_last_member_count = val; 1207 } 1208 1209 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { 1210 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); 1211 1212 br->multicast_startup_query_count = val; 1213 } 1214 1215 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { 1216 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); 1217 1218 br->multicast_last_member_interval = clock_t_to_jiffies(val); 1219 } 1220 1221 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { 1222 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); 1223 1224 br->multicast_membership_interval = clock_t_to_jiffies(val); 1225 } 1226 1227 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { 1228 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); 1229 1230 br->multicast_querier_interval = clock_t_to_jiffies(val); 1231 } 1232 1233 if (data[IFLA_BR_MCAST_QUERY_INTVL]) { 1234 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); 1235 1236 br->multicast_query_interval = clock_t_to_jiffies(val); 1237 } 1238 1239 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { 1240 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); 1241 1242 br->multicast_query_response_interval = clock_t_to_jiffies(val); 1243 } 1244 1245 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { 1246 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); 1247 1248 br->multicast_startup_query_interval = clock_t_to_jiffies(val); 1249 } 1250 1251 if (data[IFLA_BR_MCAST_STATS_ENABLED]) { 1252 __u8 mcast_stats; 1253 1254 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]); 1255 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats); 1256 } 1257 1258 if (data[IFLA_BR_MCAST_IGMP_VERSION]) { 1259 __u8 igmp_version; 1260 1261 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]); 1262 err = br_multicast_set_igmp_version(br, igmp_version); 1263 if (err) 1264 return err; 1265 } 1266 1267 #if IS_ENABLED(CONFIG_IPV6) 1268 if (data[IFLA_BR_MCAST_MLD_VERSION]) { 1269 __u8 mld_version; 1270 1271 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]); 1272 err = br_multicast_set_mld_version(br, mld_version); 1273 if (err) 1274 return err; 1275 } 1276 #endif 1277 #endif 1278 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1279 if (data[IFLA_BR_NF_CALL_IPTABLES]) { 1280 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); 1281 1282 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); 1283 } 1284 1285 if (data[IFLA_BR_NF_CALL_IP6TABLES]) { 1286 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); 1287 1288 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); 1289 } 1290 1291 if (data[IFLA_BR_NF_CALL_ARPTABLES]) { 1292 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); 1293 1294 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); 1295 } 1296 #endif 1297 1298 if (data[IFLA_BR_MULTI_BOOLOPT]) { 1299 struct br_boolopt_multi *bm; 1300 1301 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]); 1302 err = br_boolopt_multi_toggle(br, bm, extack); 1303 if (err) 1304 return err; 1305 } 1306 1307 return 0; 1308 } 1309 1310 static int br_dev_newlink(struct net *src_net, struct net_device *dev, 1311 struct nlattr *tb[], struct nlattr *data[], 1312 struct netlink_ext_ack *extack) 1313 { 1314 struct net_bridge *br = netdev_priv(dev); 1315 int err; 1316 1317 err = register_netdevice(dev); 1318 if (err) 1319 return err; 1320 1321 if (tb[IFLA_ADDRESS]) { 1322 spin_lock_bh(&br->lock); 1323 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); 1324 spin_unlock_bh(&br->lock); 1325 } 1326 1327 err = br_changelink(dev, tb, data, extack); 1328 if (err) 1329 br_dev_delete(dev, NULL); 1330 1331 return err; 1332 } 1333 1334 static size_t br_get_size(const struct net_device *brdev) 1335 { 1336 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ 1337 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ 1338 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ 1339 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ 1340 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ 1341 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ 1342 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ 1343 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1344 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ 1345 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ 1346 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ 1347 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */ 1348 #endif 1349 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ 1350 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ 1351 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ 1352 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ 1353 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ 1354 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ 1355 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ 1356 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ 1357 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ 1358 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ 1359 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ 1360 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ 1361 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1362 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ 1363 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ 1364 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ 1365 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ 1366 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */ 1367 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ 1368 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ 1369 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ 1370 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ 1371 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ 1372 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ 1373 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ 1374 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ 1375 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ 1376 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ 1377 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */ 1378 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */ 1379 #endif 1380 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1381 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ 1382 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ 1383 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ 1384 #endif 1385 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */ 1386 0; 1387 } 1388 1389 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) 1390 { 1391 struct net_bridge *br = netdev_priv(brdev); 1392 u32 forward_delay = jiffies_to_clock_t(br->forward_delay); 1393 u32 hello_time = jiffies_to_clock_t(br->hello_time); 1394 u32 age_time = jiffies_to_clock_t(br->max_age); 1395 u32 ageing_time = jiffies_to_clock_t(br->ageing_time); 1396 u32 stp_enabled = br->stp_enabled; 1397 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; 1398 u8 vlan_enabled = br_vlan_enabled(br->dev); 1399 struct br_boolopt_multi bm; 1400 u64 clockval; 1401 1402 clockval = br_timer_value(&br->hello_timer); 1403 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) 1404 return -EMSGSIZE; 1405 clockval = br_timer_value(&br->tcn_timer); 1406 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) 1407 return -EMSGSIZE; 1408 clockval = br_timer_value(&br->topology_change_timer); 1409 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, 1410 IFLA_BR_PAD)) 1411 return -EMSGSIZE; 1412 clockval = br_timer_value(&br->gc_work.timer); 1413 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) 1414 return -EMSGSIZE; 1415 1416 br_boolopt_multi_get(br, &bm); 1417 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || 1418 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || 1419 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || 1420 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || 1421 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || 1422 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || 1423 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || 1424 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || 1425 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), 1426 &br->bridge_id) || 1427 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), 1428 &br->designated_root) || 1429 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || 1430 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || 1431 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || 1432 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, 1433 br->topology_change_detected) || 1434 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) || 1435 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm)) 1436 return -EMSGSIZE; 1437 1438 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1439 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || 1440 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || 1441 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, 1442 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) || 1443 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT, 1444 br_opt_get(br, IFLA_BR_VLAN_STATS_PER_PORT))) 1445 return -EMSGSIZE; 1446 #endif 1447 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1448 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || 1449 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, 1450 br_opt_get(br, BROPT_MULTICAST_ENABLED)) || 1451 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, 1452 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) || 1453 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, 1454 br_opt_get(br, BROPT_MULTICAST_QUERIER)) || 1455 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED, 1456 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) || 1457 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) || 1458 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || 1459 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, 1460 br->multicast_last_member_count) || 1461 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, 1462 br->multicast_startup_query_count) || 1463 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION, 1464 br->multicast_igmp_version)) 1465 return -EMSGSIZE; 1466 #if IS_ENABLED(CONFIG_IPV6) 1467 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION, 1468 br->multicast_mld_version)) 1469 return -EMSGSIZE; 1470 #endif 1471 clockval = jiffies_to_clock_t(br->multicast_last_member_interval); 1472 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, 1473 IFLA_BR_PAD)) 1474 return -EMSGSIZE; 1475 clockval = jiffies_to_clock_t(br->multicast_membership_interval); 1476 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, 1477 IFLA_BR_PAD)) 1478 return -EMSGSIZE; 1479 clockval = jiffies_to_clock_t(br->multicast_querier_interval); 1480 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, 1481 IFLA_BR_PAD)) 1482 return -EMSGSIZE; 1483 clockval = jiffies_to_clock_t(br->multicast_query_interval); 1484 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, 1485 IFLA_BR_PAD)) 1486 return -EMSGSIZE; 1487 clockval = jiffies_to_clock_t(br->multicast_query_response_interval); 1488 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, 1489 IFLA_BR_PAD)) 1490 return -EMSGSIZE; 1491 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); 1492 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, 1493 IFLA_BR_PAD)) 1494 return -EMSGSIZE; 1495 #endif 1496 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1497 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, 1498 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) || 1499 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, 1500 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) || 1501 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, 1502 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0)) 1503 return -EMSGSIZE; 1504 #endif 1505 1506 return 0; 1507 } 1508 1509 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr) 1510 { 1511 struct net_bridge_port *p = NULL; 1512 struct net_bridge_vlan_group *vg; 1513 struct net_bridge_vlan *v; 1514 struct net_bridge *br; 1515 int numvls = 0; 1516 1517 switch (attr) { 1518 case IFLA_STATS_LINK_XSTATS: 1519 br = netdev_priv(dev); 1520 vg = br_vlan_group(br); 1521 break; 1522 case IFLA_STATS_LINK_XSTATS_SLAVE: 1523 p = br_port_get_rtnl(dev); 1524 if (!p) 1525 return 0; 1526 br = p->br; 1527 vg = nbp_vlan_group(p); 1528 break; 1529 default: 1530 return 0; 1531 } 1532 1533 if (vg) { 1534 /* we need to count all, even placeholder entries */ 1535 list_for_each_entry(v, &vg->vlan_list, vlist) 1536 numvls++; 1537 } 1538 1539 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + 1540 nla_total_size(sizeof(struct br_mcast_stats)) + 1541 nla_total_size(0); 1542 } 1543 1544 static int br_fill_linkxstats(struct sk_buff *skb, 1545 const struct net_device *dev, 1546 int *prividx, int attr) 1547 { 1548 struct nlattr *nla __maybe_unused; 1549 struct net_bridge_port *p = NULL; 1550 struct net_bridge_vlan_group *vg; 1551 struct net_bridge_vlan *v; 1552 struct net_bridge *br; 1553 struct nlattr *nest; 1554 int vl_idx = 0; 1555 1556 switch (attr) { 1557 case IFLA_STATS_LINK_XSTATS: 1558 br = netdev_priv(dev); 1559 vg = br_vlan_group(br); 1560 break; 1561 case IFLA_STATS_LINK_XSTATS_SLAVE: 1562 p = br_port_get_rtnl(dev); 1563 if (!p) 1564 return 0; 1565 br = p->br; 1566 vg = nbp_vlan_group(p); 1567 break; 1568 default: 1569 return -EINVAL; 1570 } 1571 1572 nest = nla_nest_start(skb, LINK_XSTATS_TYPE_BRIDGE); 1573 if (!nest) 1574 return -EMSGSIZE; 1575 1576 if (vg) { 1577 u16 pvid; 1578 1579 pvid = br_get_pvid(vg); 1580 list_for_each_entry(v, &vg->vlan_list, vlist) { 1581 struct bridge_vlan_xstats vxi; 1582 struct br_vlan_stats stats; 1583 1584 if (++vl_idx < *prividx) 1585 continue; 1586 memset(&vxi, 0, sizeof(vxi)); 1587 vxi.vid = v->vid; 1588 vxi.flags = v->flags; 1589 if (v->vid == pvid) 1590 vxi.flags |= BRIDGE_VLAN_INFO_PVID; 1591 br_vlan_get_stats(v, &stats); 1592 vxi.rx_bytes = stats.rx_bytes; 1593 vxi.rx_packets = stats.rx_packets; 1594 vxi.tx_bytes = stats.tx_bytes; 1595 vxi.tx_packets = stats.tx_packets; 1596 1597 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) 1598 goto nla_put_failure; 1599 } 1600 } 1601 1602 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1603 if (++vl_idx >= *prividx) { 1604 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST, 1605 sizeof(struct br_mcast_stats), 1606 BRIDGE_XSTATS_PAD); 1607 if (!nla) 1608 goto nla_put_failure; 1609 br_multicast_get_stats(br, p, nla_data(nla)); 1610 } 1611 #endif 1612 nla_nest_end(skb, nest); 1613 *prividx = 0; 1614 1615 return 0; 1616 1617 nla_put_failure: 1618 nla_nest_end(skb, nest); 1619 *prividx = vl_idx; 1620 1621 return -EMSGSIZE; 1622 } 1623 1624 static struct rtnl_af_ops br_af_ops __read_mostly = { 1625 .family = AF_BRIDGE, 1626 .get_link_af_size = br_get_link_af_size_filtered, 1627 }; 1628 1629 struct rtnl_link_ops br_link_ops __read_mostly = { 1630 .kind = "bridge", 1631 .priv_size = sizeof(struct net_bridge), 1632 .setup = br_dev_setup, 1633 .maxtype = IFLA_BR_MAX, 1634 .policy = br_policy, 1635 .validate = br_validate, 1636 .newlink = br_dev_newlink, 1637 .changelink = br_changelink, 1638 .dellink = br_dev_delete, 1639 .get_size = br_get_size, 1640 .fill_info = br_fill_info, 1641 .fill_linkxstats = br_fill_linkxstats, 1642 .get_linkxstats_size = br_get_linkxstats_size, 1643 1644 .slave_maxtype = IFLA_BRPORT_MAX, 1645 .slave_policy = br_port_policy, 1646 .slave_changelink = br_port_slave_changelink, 1647 .get_slave_size = br_port_get_slave_size, 1648 .fill_slave_info = br_port_fill_slave_info, 1649 }; 1650 1651 int __init br_netlink_init(void) 1652 { 1653 int err; 1654 1655 br_mdb_init(); 1656 rtnl_af_register(&br_af_ops); 1657 1658 err = rtnl_link_register(&br_link_ops); 1659 if (err) 1660 goto out_af; 1661 1662 return 0; 1663 1664 out_af: 1665 rtnl_af_unregister(&br_af_ops); 1666 br_mdb_uninit(); 1667 return err; 1668 } 1669 1670 void br_netlink_fini(void) 1671 { 1672 br_mdb_uninit(); 1673 rtnl_af_unregister(&br_af_ops); 1674 rtnl_link_unregister(&br_link_ops); 1675 } 1676