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 static 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 if (!vinfo_curr->vid || vinfo_curr->vid >= VLAN_VID_MASK) 572 return -EINVAL; 573 574 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 575 /* check if we are already processing a range */ 576 if (*vinfo_last) 577 return -EINVAL; 578 *vinfo_last = vinfo_curr; 579 /* don't allow range of pvids */ 580 if ((*vinfo_last)->flags & BRIDGE_VLAN_INFO_PVID) 581 return -EINVAL; 582 return 0; 583 } 584 585 if (*vinfo_last) { 586 struct bridge_vlan_info tmp_vinfo; 587 int v, err; 588 589 if (!(vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END)) 590 return -EINVAL; 591 592 if (vinfo_curr->vid <= (*vinfo_last)->vid) 593 return -EINVAL; 594 595 memcpy(&tmp_vinfo, *vinfo_last, 596 sizeof(struct bridge_vlan_info)); 597 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) { 598 tmp_vinfo.vid = v; 599 err = br_vlan_info(br, p, cmd, &tmp_vinfo, changed, 600 extack); 601 if (err) 602 break; 603 } 604 *vinfo_last = NULL; 605 606 return err; 607 } 608 609 return br_vlan_info(br, p, cmd, vinfo_curr, changed, extack); 610 } 611 612 static int br_afspec(struct net_bridge *br, 613 struct net_bridge_port *p, 614 struct nlattr *af_spec, 615 int cmd, bool *changed, 616 struct netlink_ext_ack *extack) 617 { 618 struct bridge_vlan_info *vinfo_curr = NULL; 619 struct bridge_vlan_info *vinfo_last = NULL; 620 struct nlattr *attr; 621 struct vtunnel_info tinfo_last = {}; 622 struct vtunnel_info tinfo_curr = {}; 623 int err = 0, rem; 624 625 nla_for_each_nested(attr, af_spec, rem) { 626 err = 0; 627 switch (nla_type(attr)) { 628 case IFLA_BRIDGE_VLAN_TUNNEL_INFO: 629 if (!p || !(p->flags & BR_VLAN_TUNNEL)) 630 return -EINVAL; 631 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr); 632 if (err) 633 return err; 634 err = br_process_vlan_tunnel_info(br, p, cmd, 635 &tinfo_curr, 636 &tinfo_last, 637 changed); 638 if (err) 639 return err; 640 break; 641 case IFLA_BRIDGE_VLAN_INFO: 642 if (nla_len(attr) != sizeof(struct bridge_vlan_info)) 643 return -EINVAL; 644 vinfo_curr = nla_data(attr); 645 err = br_process_vlan_info(br, p, cmd, vinfo_curr, 646 &vinfo_last, changed, 647 extack); 648 if (err) 649 return err; 650 break; 651 } 652 } 653 654 return err; 655 } 656 657 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { 658 [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, 659 [IFLA_BRPORT_COST] = { .type = NLA_U32 }, 660 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, 661 [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, 662 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, 663 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, 664 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, 665 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, 666 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, 667 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, 668 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, 669 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, 670 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 }, 671 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 }, 672 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 }, 673 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 }, 674 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 }, 675 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 }, 676 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 }, 677 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 }, 678 }; 679 680 /* Change the state of the port and notify spanning tree */ 681 static int br_set_port_state(struct net_bridge_port *p, u8 state) 682 { 683 if (state > BR_STATE_BLOCKING) 684 return -EINVAL; 685 686 /* if kernel STP is running, don't allow changes */ 687 if (p->br->stp_enabled == BR_KERNEL_STP) 688 return -EBUSY; 689 690 /* if device is not up, change is not allowed 691 * if link is not present, only allowable state is disabled 692 */ 693 if (!netif_running(p->dev) || 694 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) 695 return -ENETDOWN; 696 697 br_set_state(p, state); 698 br_port_state_selection(p->br); 699 return 0; 700 } 701 702 /* Set/clear or port flags based on attribute */ 703 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], 704 int attrtype, unsigned long mask) 705 { 706 unsigned long flags; 707 int err; 708 709 if (!tb[attrtype]) 710 return 0; 711 712 if (nla_get_u8(tb[attrtype])) 713 flags = p->flags | mask; 714 else 715 flags = p->flags & ~mask; 716 717 err = br_switchdev_set_port_flag(p, flags, mask); 718 if (err) 719 return err; 720 721 p->flags = flags; 722 return 0; 723 } 724 725 /* Process bridge protocol info on port */ 726 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) 727 { 728 unsigned long old_flags = p->flags; 729 bool br_vlan_tunnel_old = false; 730 int err; 731 732 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); 733 if (err) 734 return err; 735 736 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); 737 if (err) 738 return err; 739 740 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); 741 if (err) 742 return err; 743 744 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); 745 if (err) 746 return err; 747 748 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); 749 if (err) 750 return err; 751 752 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); 753 if (err) 754 return err; 755 756 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); 757 if (err) 758 return err; 759 760 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); 761 if (err) 762 return err; 763 764 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); 765 if (err) 766 return err; 767 768 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); 769 if (err) 770 return err; 771 772 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); 773 if (err) 774 return err; 775 776 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; 777 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); 778 if (err) 779 return err; 780 781 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) 782 nbp_vlan_tunnel_info_flush(p); 783 784 if (tb[IFLA_BRPORT_COST]) { 785 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); 786 if (err) 787 return err; 788 } 789 790 if (tb[IFLA_BRPORT_PRIORITY]) { 791 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); 792 if (err) 793 return err; 794 } 795 796 if (tb[IFLA_BRPORT_STATE]) { 797 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); 798 if (err) 799 return err; 800 } 801 802 if (tb[IFLA_BRPORT_FLUSH]) 803 br_fdb_delete_by_port(p->br, p, 0, 0); 804 805 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 806 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { 807 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); 808 809 err = br_multicast_set_port_router(p, mcast_router); 810 if (err) 811 return err; 812 } 813 #endif 814 815 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) { 816 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]); 817 818 if (fwd_mask & BR_GROUPFWD_MACPAUSE) 819 return -EINVAL; 820 p->group_fwd_mask = fwd_mask; 821 } 822 823 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, 824 BR_NEIGH_SUPPRESS); 825 if (err) 826 return err; 827 828 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); 829 if (err) 830 return err; 831 832 if (tb[IFLA_BRPORT_BACKUP_PORT]) { 833 struct net_device *backup_dev = NULL; 834 u32 backup_ifindex; 835 836 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]); 837 if (backup_ifindex) { 838 backup_dev = __dev_get_by_index(dev_net(p->dev), 839 backup_ifindex); 840 if (!backup_dev) 841 return -ENOENT; 842 } 843 844 err = nbp_backup_change(p, backup_dev); 845 if (err) 846 return err; 847 } 848 849 br_port_flags_change(p, old_flags ^ p->flags); 850 return 0; 851 } 852 853 /* Change state and parameters on port. */ 854 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, 855 struct netlink_ext_ack *extack) 856 { 857 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 858 struct nlattr *tb[IFLA_BRPORT_MAX + 1]; 859 struct net_bridge_port *p; 860 struct nlattr *protinfo; 861 struct nlattr *afspec; 862 bool changed = false; 863 int err = 0; 864 865 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); 866 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 867 if (!protinfo && !afspec) 868 return 0; 869 870 p = br_port_get_rtnl(dev); 871 /* We want to accept dev as bridge itself if the AF_SPEC 872 * is set to see if someone is setting vlan info on the bridge 873 */ 874 if (!p && !afspec) 875 return -EINVAL; 876 877 if (p && protinfo) { 878 if (protinfo->nla_type & NLA_F_NESTED) { 879 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX, 880 protinfo, 881 br_port_policy, 882 NULL); 883 if (err) 884 return err; 885 886 spin_lock_bh(&p->br->lock); 887 err = br_setport(p, tb); 888 spin_unlock_bh(&p->br->lock); 889 } else { 890 /* Binary compatibility with old RSTP */ 891 if (nla_len(protinfo) < sizeof(u8)) 892 return -EINVAL; 893 894 spin_lock_bh(&p->br->lock); 895 err = br_set_port_state(p, nla_get_u8(protinfo)); 896 spin_unlock_bh(&p->br->lock); 897 } 898 if (err) 899 goto out; 900 changed = true; 901 } 902 903 if (afspec) 904 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack); 905 906 if (changed) 907 br_ifinfo_notify(RTM_NEWLINK, br, p); 908 out: 909 return err; 910 } 911 912 /* Delete port information */ 913 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) 914 { 915 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 916 struct net_bridge_port *p; 917 struct nlattr *afspec; 918 bool changed = false; 919 int err = 0; 920 921 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 922 if (!afspec) 923 return 0; 924 925 p = br_port_get_rtnl(dev); 926 /* We want to accept dev as bridge itself as well */ 927 if (!p && !(dev->priv_flags & IFF_EBRIDGE)) 928 return -EINVAL; 929 930 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL); 931 if (changed) 932 /* Send RTM_NEWLINK because userspace 933 * expects RTM_NEWLINK for vlan dels 934 */ 935 br_ifinfo_notify(RTM_NEWLINK, br, p); 936 937 return err; 938 } 939 940 static int br_validate(struct nlattr *tb[], struct nlattr *data[], 941 struct netlink_ext_ack *extack) 942 { 943 if (tb[IFLA_ADDRESS]) { 944 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 945 return -EINVAL; 946 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 947 return -EADDRNOTAVAIL; 948 } 949 950 if (!data) 951 return 0; 952 953 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 954 if (data[IFLA_BR_VLAN_PROTOCOL]) { 955 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) { 956 case htons(ETH_P_8021Q): 957 case htons(ETH_P_8021AD): 958 break; 959 default: 960 return -EPROTONOSUPPORT; 961 } 962 } 963 964 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 965 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 966 967 if (defpvid >= VLAN_VID_MASK) 968 return -EINVAL; 969 } 970 #endif 971 972 return 0; 973 } 974 975 static int br_port_slave_changelink(struct net_device *brdev, 976 struct net_device *dev, 977 struct nlattr *tb[], 978 struct nlattr *data[], 979 struct netlink_ext_ack *extack) 980 { 981 struct net_bridge *br = netdev_priv(brdev); 982 int ret; 983 984 if (!data) 985 return 0; 986 987 spin_lock_bh(&br->lock); 988 ret = br_setport(br_port_get_rtnl(dev), data); 989 spin_unlock_bh(&br->lock); 990 991 return ret; 992 } 993 994 static int br_port_fill_slave_info(struct sk_buff *skb, 995 const struct net_device *brdev, 996 const struct net_device *dev) 997 { 998 return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); 999 } 1000 1001 static size_t br_port_get_slave_size(const struct net_device *brdev, 1002 const struct net_device *dev) 1003 { 1004 return br_port_info_size(); 1005 } 1006 1007 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { 1008 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, 1009 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, 1010 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, 1011 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, 1012 [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, 1013 [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, 1014 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, 1015 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, 1016 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, 1017 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, 1018 .len = ETH_ALEN }, 1019 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, 1020 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, 1021 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, 1022 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, 1023 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, 1024 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, 1025 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 1026 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 1027 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 1028 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 1029 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 1030 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 1031 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 1032 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 1033 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, 1034 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, 1035 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, 1036 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, 1037 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, 1038 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 }, 1039 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, 1040 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 }, 1041 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 }, 1042 [IFLA_BR_MULTI_BOOLOPT] = { .type = NLA_EXACT_LEN, 1043 .len = sizeof(struct br_boolopt_multi) }, 1044 }; 1045 1046 static int br_changelink(struct net_device *brdev, struct nlattr *tb[], 1047 struct nlattr *data[], 1048 struct netlink_ext_ack *extack) 1049 { 1050 struct net_bridge *br = netdev_priv(brdev); 1051 int err; 1052 1053 if (!data) 1054 return 0; 1055 1056 if (data[IFLA_BR_FORWARD_DELAY]) { 1057 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); 1058 if (err) 1059 return err; 1060 } 1061 1062 if (data[IFLA_BR_HELLO_TIME]) { 1063 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); 1064 if (err) 1065 return err; 1066 } 1067 1068 if (data[IFLA_BR_MAX_AGE]) { 1069 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); 1070 if (err) 1071 return err; 1072 } 1073 1074 if (data[IFLA_BR_AGEING_TIME]) { 1075 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); 1076 if (err) 1077 return err; 1078 } 1079 1080 if (data[IFLA_BR_STP_STATE]) { 1081 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); 1082 1083 br_stp_set_enabled(br, stp_enabled); 1084 } 1085 1086 if (data[IFLA_BR_PRIORITY]) { 1087 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); 1088 1089 br_stp_set_bridge_priority(br, priority); 1090 } 1091 1092 if (data[IFLA_BR_VLAN_FILTERING]) { 1093 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); 1094 1095 err = __br_vlan_filter_toggle(br, vlan_filter); 1096 if (err) 1097 return err; 1098 } 1099 1100 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1101 if (data[IFLA_BR_VLAN_PROTOCOL]) { 1102 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); 1103 1104 err = __br_vlan_set_proto(br, vlan_proto); 1105 if (err) 1106 return err; 1107 } 1108 1109 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1110 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1111 1112 err = __br_vlan_set_default_pvid(br, defpvid, extack); 1113 if (err) 1114 return err; 1115 } 1116 1117 if (data[IFLA_BR_VLAN_STATS_ENABLED]) { 1118 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); 1119 1120 err = br_vlan_set_stats(br, vlan_stats); 1121 if (err) 1122 return err; 1123 } 1124 1125 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) { 1126 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]); 1127 1128 err = br_vlan_set_stats_per_port(br, per_port); 1129 if (err) 1130 return err; 1131 } 1132 #endif 1133 1134 if (data[IFLA_BR_GROUP_FWD_MASK]) { 1135 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); 1136 1137 if (fwd_mask & BR_GROUPFWD_RESTRICTED) 1138 return -EINVAL; 1139 br->group_fwd_mask = fwd_mask; 1140 } 1141 1142 if (data[IFLA_BR_GROUP_ADDR]) { 1143 u8 new_addr[ETH_ALEN]; 1144 1145 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) 1146 return -EINVAL; 1147 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); 1148 if (!is_link_local_ether_addr(new_addr)) 1149 return -EINVAL; 1150 if (new_addr[5] == 1 || /* 802.3x Pause address */ 1151 new_addr[5] == 2 || /* 802.3ad Slow protocols */ 1152 new_addr[5] == 3) /* 802.1X PAE address */ 1153 return -EINVAL; 1154 spin_lock_bh(&br->lock); 1155 memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); 1156 spin_unlock_bh(&br->lock); 1157 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); 1158 br_recalculate_fwd_mask(br); 1159 } 1160 1161 if (data[IFLA_BR_FDB_FLUSH]) 1162 br_fdb_flush(br); 1163 1164 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1165 if (data[IFLA_BR_MCAST_ROUTER]) { 1166 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); 1167 1168 err = br_multicast_set_router(br, multicast_router); 1169 if (err) 1170 return err; 1171 } 1172 1173 if (data[IFLA_BR_MCAST_SNOOPING]) { 1174 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); 1175 1176 br_multicast_toggle(br, mcast_snooping); 1177 } 1178 1179 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { 1180 u8 val; 1181 1182 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); 1183 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); 1184 } 1185 1186 if (data[IFLA_BR_MCAST_QUERIER]) { 1187 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); 1188 1189 err = br_multicast_set_querier(br, mcast_querier); 1190 if (err) 1191 return err; 1192 } 1193 1194 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) 1195 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n", 1196 RHT_ELASTICITY); 1197 1198 if (data[IFLA_BR_MCAST_HASH_MAX]) 1199 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); 1200 1201 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { 1202 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); 1203 1204 br->multicast_last_member_count = val; 1205 } 1206 1207 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { 1208 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); 1209 1210 br->multicast_startup_query_count = val; 1211 } 1212 1213 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { 1214 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); 1215 1216 br->multicast_last_member_interval = clock_t_to_jiffies(val); 1217 } 1218 1219 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { 1220 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); 1221 1222 br->multicast_membership_interval = clock_t_to_jiffies(val); 1223 } 1224 1225 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { 1226 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); 1227 1228 br->multicast_querier_interval = clock_t_to_jiffies(val); 1229 } 1230 1231 if (data[IFLA_BR_MCAST_QUERY_INTVL]) { 1232 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); 1233 1234 br->multicast_query_interval = clock_t_to_jiffies(val); 1235 } 1236 1237 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { 1238 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); 1239 1240 br->multicast_query_response_interval = clock_t_to_jiffies(val); 1241 } 1242 1243 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { 1244 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); 1245 1246 br->multicast_startup_query_interval = clock_t_to_jiffies(val); 1247 } 1248 1249 if (data[IFLA_BR_MCAST_STATS_ENABLED]) { 1250 __u8 mcast_stats; 1251 1252 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]); 1253 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats); 1254 } 1255 1256 if (data[IFLA_BR_MCAST_IGMP_VERSION]) { 1257 __u8 igmp_version; 1258 1259 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]); 1260 err = br_multicast_set_igmp_version(br, igmp_version); 1261 if (err) 1262 return err; 1263 } 1264 1265 #if IS_ENABLED(CONFIG_IPV6) 1266 if (data[IFLA_BR_MCAST_MLD_VERSION]) { 1267 __u8 mld_version; 1268 1269 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]); 1270 err = br_multicast_set_mld_version(br, mld_version); 1271 if (err) 1272 return err; 1273 } 1274 #endif 1275 #endif 1276 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1277 if (data[IFLA_BR_NF_CALL_IPTABLES]) { 1278 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); 1279 1280 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); 1281 } 1282 1283 if (data[IFLA_BR_NF_CALL_IP6TABLES]) { 1284 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); 1285 1286 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); 1287 } 1288 1289 if (data[IFLA_BR_NF_CALL_ARPTABLES]) { 1290 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); 1291 1292 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); 1293 } 1294 #endif 1295 1296 if (data[IFLA_BR_MULTI_BOOLOPT]) { 1297 struct br_boolopt_multi *bm; 1298 1299 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]); 1300 err = br_boolopt_multi_toggle(br, bm, extack); 1301 if (err) 1302 return err; 1303 } 1304 1305 return 0; 1306 } 1307 1308 static int br_dev_newlink(struct net *src_net, struct net_device *dev, 1309 struct nlattr *tb[], struct nlattr *data[], 1310 struct netlink_ext_ack *extack) 1311 { 1312 struct net_bridge *br = netdev_priv(dev); 1313 int err; 1314 1315 err = register_netdevice(dev); 1316 if (err) 1317 return err; 1318 1319 if (tb[IFLA_ADDRESS]) { 1320 spin_lock_bh(&br->lock); 1321 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); 1322 spin_unlock_bh(&br->lock); 1323 } 1324 1325 err = br_changelink(dev, tb, data, extack); 1326 if (err) 1327 br_dev_delete(dev, NULL); 1328 1329 return err; 1330 } 1331 1332 static size_t br_get_size(const struct net_device *brdev) 1333 { 1334 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ 1335 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ 1336 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ 1337 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ 1338 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ 1339 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ 1340 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ 1341 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1342 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ 1343 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ 1344 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ 1345 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */ 1346 #endif 1347 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ 1348 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ 1349 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ 1350 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ 1351 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ 1352 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ 1353 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ 1354 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ 1355 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ 1356 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ 1357 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ 1358 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ 1359 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1360 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ 1361 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ 1362 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ 1363 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ 1364 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */ 1365 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ 1366 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ 1367 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ 1368 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ 1369 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ 1370 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ 1371 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ 1372 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ 1373 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ 1374 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ 1375 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */ 1376 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */ 1377 #endif 1378 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1379 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ 1380 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ 1381 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ 1382 #endif 1383 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */ 1384 0; 1385 } 1386 1387 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) 1388 { 1389 struct net_bridge *br = netdev_priv(brdev); 1390 u32 forward_delay = jiffies_to_clock_t(br->forward_delay); 1391 u32 hello_time = jiffies_to_clock_t(br->hello_time); 1392 u32 age_time = jiffies_to_clock_t(br->max_age); 1393 u32 ageing_time = jiffies_to_clock_t(br->ageing_time); 1394 u32 stp_enabled = br->stp_enabled; 1395 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; 1396 u8 vlan_enabled = br_vlan_enabled(br->dev); 1397 struct br_boolopt_multi bm; 1398 u64 clockval; 1399 1400 clockval = br_timer_value(&br->hello_timer); 1401 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) 1402 return -EMSGSIZE; 1403 clockval = br_timer_value(&br->tcn_timer); 1404 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) 1405 return -EMSGSIZE; 1406 clockval = br_timer_value(&br->topology_change_timer); 1407 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, 1408 IFLA_BR_PAD)) 1409 return -EMSGSIZE; 1410 clockval = br_timer_value(&br->gc_work.timer); 1411 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) 1412 return -EMSGSIZE; 1413 1414 br_boolopt_multi_get(br, &bm); 1415 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || 1416 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || 1417 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || 1418 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || 1419 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || 1420 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || 1421 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || 1422 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || 1423 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), 1424 &br->bridge_id) || 1425 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), 1426 &br->designated_root) || 1427 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || 1428 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || 1429 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || 1430 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, 1431 br->topology_change_detected) || 1432 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) || 1433 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm)) 1434 return -EMSGSIZE; 1435 1436 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1437 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || 1438 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || 1439 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, 1440 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) || 1441 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT, 1442 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT))) 1443 return -EMSGSIZE; 1444 #endif 1445 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1446 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || 1447 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, 1448 br_opt_get(br, BROPT_MULTICAST_ENABLED)) || 1449 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, 1450 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) || 1451 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, 1452 br_opt_get(br, BROPT_MULTICAST_QUERIER)) || 1453 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED, 1454 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) || 1455 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) || 1456 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || 1457 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, 1458 br->multicast_last_member_count) || 1459 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, 1460 br->multicast_startup_query_count) || 1461 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION, 1462 br->multicast_igmp_version)) 1463 return -EMSGSIZE; 1464 #if IS_ENABLED(CONFIG_IPV6) 1465 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION, 1466 br->multicast_mld_version)) 1467 return -EMSGSIZE; 1468 #endif 1469 clockval = jiffies_to_clock_t(br->multicast_last_member_interval); 1470 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, 1471 IFLA_BR_PAD)) 1472 return -EMSGSIZE; 1473 clockval = jiffies_to_clock_t(br->multicast_membership_interval); 1474 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, 1475 IFLA_BR_PAD)) 1476 return -EMSGSIZE; 1477 clockval = jiffies_to_clock_t(br->multicast_querier_interval); 1478 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, 1479 IFLA_BR_PAD)) 1480 return -EMSGSIZE; 1481 clockval = jiffies_to_clock_t(br->multicast_query_interval); 1482 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, 1483 IFLA_BR_PAD)) 1484 return -EMSGSIZE; 1485 clockval = jiffies_to_clock_t(br->multicast_query_response_interval); 1486 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, 1487 IFLA_BR_PAD)) 1488 return -EMSGSIZE; 1489 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); 1490 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, 1491 IFLA_BR_PAD)) 1492 return -EMSGSIZE; 1493 #endif 1494 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1495 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, 1496 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) || 1497 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, 1498 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) || 1499 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, 1500 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0)) 1501 return -EMSGSIZE; 1502 #endif 1503 1504 return 0; 1505 } 1506 1507 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr) 1508 { 1509 struct net_bridge_port *p = NULL; 1510 struct net_bridge_vlan_group *vg; 1511 struct net_bridge_vlan *v; 1512 struct net_bridge *br; 1513 int numvls = 0; 1514 1515 switch (attr) { 1516 case IFLA_STATS_LINK_XSTATS: 1517 br = netdev_priv(dev); 1518 vg = br_vlan_group(br); 1519 break; 1520 case IFLA_STATS_LINK_XSTATS_SLAVE: 1521 p = br_port_get_rtnl(dev); 1522 if (!p) 1523 return 0; 1524 br = p->br; 1525 vg = nbp_vlan_group(p); 1526 break; 1527 default: 1528 return 0; 1529 } 1530 1531 if (vg) { 1532 /* we need to count all, even placeholder entries */ 1533 list_for_each_entry(v, &vg->vlan_list, vlist) 1534 numvls++; 1535 } 1536 1537 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + 1538 nla_total_size(sizeof(struct br_mcast_stats)) + 1539 nla_total_size(0); 1540 } 1541 1542 static int br_fill_linkxstats(struct sk_buff *skb, 1543 const struct net_device *dev, 1544 int *prividx, int attr) 1545 { 1546 struct nlattr *nla __maybe_unused; 1547 struct net_bridge_port *p = NULL; 1548 struct net_bridge_vlan_group *vg; 1549 struct net_bridge_vlan *v; 1550 struct net_bridge *br; 1551 struct nlattr *nest; 1552 int vl_idx = 0; 1553 1554 switch (attr) { 1555 case IFLA_STATS_LINK_XSTATS: 1556 br = netdev_priv(dev); 1557 vg = br_vlan_group(br); 1558 break; 1559 case IFLA_STATS_LINK_XSTATS_SLAVE: 1560 p = br_port_get_rtnl(dev); 1561 if (!p) 1562 return 0; 1563 br = p->br; 1564 vg = nbp_vlan_group(p); 1565 break; 1566 default: 1567 return -EINVAL; 1568 } 1569 1570 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE); 1571 if (!nest) 1572 return -EMSGSIZE; 1573 1574 if (vg) { 1575 u16 pvid; 1576 1577 pvid = br_get_pvid(vg); 1578 list_for_each_entry(v, &vg->vlan_list, vlist) { 1579 struct bridge_vlan_xstats vxi; 1580 struct br_vlan_stats stats; 1581 1582 if (++vl_idx < *prividx) 1583 continue; 1584 memset(&vxi, 0, sizeof(vxi)); 1585 vxi.vid = v->vid; 1586 vxi.flags = v->flags; 1587 if (v->vid == pvid) 1588 vxi.flags |= BRIDGE_VLAN_INFO_PVID; 1589 br_vlan_get_stats(v, &stats); 1590 vxi.rx_bytes = stats.rx_bytes; 1591 vxi.rx_packets = stats.rx_packets; 1592 vxi.tx_bytes = stats.tx_bytes; 1593 vxi.tx_packets = stats.tx_packets; 1594 1595 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) 1596 goto nla_put_failure; 1597 } 1598 } 1599 1600 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1601 if (++vl_idx >= *prividx) { 1602 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST, 1603 sizeof(struct br_mcast_stats), 1604 BRIDGE_XSTATS_PAD); 1605 if (!nla) 1606 goto nla_put_failure; 1607 br_multicast_get_stats(br, p, nla_data(nla)); 1608 } 1609 #endif 1610 nla_nest_end(skb, nest); 1611 *prividx = 0; 1612 1613 return 0; 1614 1615 nla_put_failure: 1616 nla_nest_end(skb, nest); 1617 *prividx = vl_idx; 1618 1619 return -EMSGSIZE; 1620 } 1621 1622 static struct rtnl_af_ops br_af_ops __read_mostly = { 1623 .family = AF_BRIDGE, 1624 .get_link_af_size = br_get_link_af_size_filtered, 1625 }; 1626 1627 struct rtnl_link_ops br_link_ops __read_mostly = { 1628 .kind = "bridge", 1629 .priv_size = sizeof(struct net_bridge), 1630 .setup = br_dev_setup, 1631 .maxtype = IFLA_BR_MAX, 1632 .policy = br_policy, 1633 .validate = br_validate, 1634 .newlink = br_dev_newlink, 1635 .changelink = br_changelink, 1636 .dellink = br_dev_delete, 1637 .get_size = br_get_size, 1638 .fill_info = br_fill_info, 1639 .fill_linkxstats = br_fill_linkxstats, 1640 .get_linkxstats_size = br_get_linkxstats_size, 1641 1642 .slave_maxtype = IFLA_BRPORT_MAX, 1643 .slave_policy = br_port_policy, 1644 .slave_changelink = br_port_slave_changelink, 1645 .get_slave_size = br_port_get_slave_size, 1646 .fill_slave_info = br_port_fill_slave_info, 1647 }; 1648 1649 int __init br_netlink_init(void) 1650 { 1651 int err; 1652 1653 br_mdb_init(); 1654 rtnl_af_register(&br_af_ops); 1655 1656 err = rtnl_link_register(&br_link_ops); 1657 if (err) 1658 goto out_af; 1659 1660 return 0; 1661 1662 out_af: 1663 rtnl_af_unregister(&br_af_ops); 1664 br_mdb_uninit(); 1665 return err; 1666 } 1667 1668 void br_netlink_fini(void) 1669 { 1670 br_mdb_uninit(); 1671 rtnl_af_unregister(&br_af_ops); 1672 rtnl_link_unregister(&br_link_ops); 1673 } 1674