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 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_RING_OPEN */ 155 + 0; 156 } 157 158 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) 159 { 160 return NLMSG_ALIGN(sizeof(struct ifinfomsg)) 161 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ 162 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ 163 + nla_total_size(4) /* IFLA_MASTER */ 164 + nla_total_size(4) /* IFLA_MTU */ 165 + nla_total_size(4) /* IFLA_LINK */ 166 + nla_total_size(1) /* IFLA_OPERSTATE */ 167 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ 168 + nla_total_size(br_get_link_af_size_filtered(dev, 169 filter_mask)) /* IFLA_AF_SPEC */ 170 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */ 171 } 172 173 static int br_port_fill_attrs(struct sk_buff *skb, 174 const struct net_bridge_port *p) 175 { 176 u8 mode = !!(p->flags & BR_HAIRPIN_MODE); 177 struct net_bridge_port *backup_p; 178 u64 timerval; 179 180 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || 181 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || 182 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || 183 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || 184 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || 185 nla_put_u8(skb, IFLA_BRPORT_PROTECT, 186 !!(p->flags & BR_ROOT_BLOCK)) || 187 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, 188 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || 189 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST, 190 !!(p->flags & BR_MULTICAST_TO_UNICAST)) || 191 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || 192 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, 193 !!(p->flags & BR_FLOOD)) || 194 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD, 195 !!(p->flags & BR_MCAST_FLOOD)) || 196 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD, 197 !!(p->flags & BR_BCAST_FLOOD)) || 198 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || 199 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, 200 !!(p->flags & BR_PROXYARP_WIFI)) || 201 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id), 202 &p->designated_root) || 203 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id), 204 &p->designated_bridge) || 205 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) || 206 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) || 207 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) || 208 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) || 209 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, 210 p->topology_change_ack) || 211 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) || 212 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags & 213 BR_VLAN_TUNNEL)) || 214 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) || 215 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS, 216 !!(p->flags & BR_NEIGH_SUPPRESS)) || 217 nla_put_u8(skb, IFLA_BRPORT_MRP_RING_OPEN, !!(p->flags & 218 BR_MRP_LOST_CONT)) || 219 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED))) 220 return -EMSGSIZE; 221 222 timerval = br_timer_value(&p->message_age_timer); 223 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval, 224 IFLA_BRPORT_PAD)) 225 return -EMSGSIZE; 226 timerval = br_timer_value(&p->forward_delay_timer); 227 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval, 228 IFLA_BRPORT_PAD)) 229 return -EMSGSIZE; 230 timerval = br_timer_value(&p->hold_timer); 231 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval, 232 IFLA_BRPORT_PAD)) 233 return -EMSGSIZE; 234 235 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 236 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER, 237 p->multicast_router)) 238 return -EMSGSIZE; 239 #endif 240 241 /* we might be called only with br->lock */ 242 rcu_read_lock(); 243 backup_p = rcu_dereference(p->backup_port); 244 if (backup_p) 245 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT, 246 backup_p->dev->ifindex); 247 rcu_read_unlock(); 248 249 return 0; 250 } 251 252 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, 253 u16 vid_end, u16 flags) 254 { 255 struct bridge_vlan_info vinfo; 256 257 if ((vid_end - vid_start) > 0) { 258 /* add range to skb */ 259 vinfo.vid = vid_start; 260 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; 261 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 262 sizeof(vinfo), &vinfo)) 263 goto nla_put_failure; 264 265 vinfo.vid = vid_end; 266 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; 267 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 268 sizeof(vinfo), &vinfo)) 269 goto nla_put_failure; 270 } else { 271 vinfo.vid = vid_start; 272 vinfo.flags = flags; 273 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 274 sizeof(vinfo), &vinfo)) 275 goto nla_put_failure; 276 } 277 278 return 0; 279 280 nla_put_failure: 281 return -EMSGSIZE; 282 } 283 284 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, 285 struct net_bridge_vlan_group *vg) 286 { 287 struct net_bridge_vlan *v; 288 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; 289 u16 flags, pvid; 290 int err = 0; 291 292 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan 293 * and mark vlan info with begin and end flags 294 * if vlaninfo represents a range 295 */ 296 pvid = br_get_pvid(vg); 297 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 298 flags = 0; 299 if (!br_vlan_should_use(v)) 300 continue; 301 if (v->vid == pvid) 302 flags |= BRIDGE_VLAN_INFO_PVID; 303 304 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 305 flags |= BRIDGE_VLAN_INFO_UNTAGGED; 306 307 if (vid_range_start == 0) { 308 goto initvars; 309 } else if ((v->vid - vid_range_end) == 1 && 310 flags == vid_range_flags) { 311 vid_range_end = v->vid; 312 continue; 313 } else { 314 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 315 vid_range_end, 316 vid_range_flags); 317 if (err) 318 return err; 319 } 320 321 initvars: 322 vid_range_start = v->vid; 323 vid_range_end = v->vid; 324 vid_range_flags = flags; 325 } 326 327 if (vid_range_start != 0) { 328 /* Call it once more to send any left over vlans */ 329 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 330 vid_range_end, 331 vid_range_flags); 332 if (err) 333 return err; 334 } 335 336 return 0; 337 } 338 339 static int br_fill_ifvlaninfo(struct sk_buff *skb, 340 struct net_bridge_vlan_group *vg) 341 { 342 struct bridge_vlan_info vinfo; 343 struct net_bridge_vlan *v; 344 u16 pvid; 345 346 pvid = br_get_pvid(vg); 347 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 348 if (!br_vlan_should_use(v)) 349 continue; 350 351 vinfo.vid = v->vid; 352 vinfo.flags = 0; 353 if (v->vid == pvid) 354 vinfo.flags |= BRIDGE_VLAN_INFO_PVID; 355 356 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 357 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; 358 359 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 360 sizeof(vinfo), &vinfo)) 361 goto nla_put_failure; 362 } 363 364 return 0; 365 366 nla_put_failure: 367 return -EMSGSIZE; 368 } 369 370 /* 371 * Create one netlink message for one interface 372 * Contains port and master info as well as carrier and bridge state. 373 */ 374 static int br_fill_ifinfo(struct sk_buff *skb, 375 const struct net_bridge_port *port, 376 u32 pid, u32 seq, int event, unsigned int flags, 377 u32 filter_mask, const struct net_device *dev) 378 { 379 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; 380 struct net_bridge *br; 381 struct ifinfomsg *hdr; 382 struct nlmsghdr *nlh; 383 384 if (port) 385 br = port->br; 386 else 387 br = netdev_priv(dev); 388 389 br_debug(br, "br_fill_info event %d port %s master %s\n", 390 event, dev->name, br->dev->name); 391 392 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); 393 if (nlh == NULL) 394 return -EMSGSIZE; 395 396 hdr = nlmsg_data(nlh); 397 hdr->ifi_family = AF_BRIDGE; 398 hdr->__ifi_pad = 0; 399 hdr->ifi_type = dev->type; 400 hdr->ifi_index = dev->ifindex; 401 hdr->ifi_flags = dev_get_flags(dev); 402 hdr->ifi_change = 0; 403 404 if (nla_put_string(skb, IFLA_IFNAME, dev->name) || 405 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || 406 nla_put_u32(skb, IFLA_MTU, dev->mtu) || 407 nla_put_u8(skb, IFLA_OPERSTATE, operstate) || 408 (dev->addr_len && 409 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || 410 (dev->ifindex != dev_get_iflink(dev) && 411 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) 412 goto nla_put_failure; 413 414 if (event == RTM_NEWLINK && port) { 415 struct nlattr *nest; 416 417 nest = nla_nest_start(skb, IFLA_PROTINFO); 418 if (nest == NULL || br_port_fill_attrs(skb, port) < 0) 419 goto nla_put_failure; 420 nla_nest_end(skb, nest); 421 } 422 423 /* Check if the VID information is requested */ 424 if ((filter_mask & RTEXT_FILTER_BRVLAN) || 425 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { 426 struct net_bridge_vlan_group *vg; 427 struct nlattr *af; 428 int err; 429 430 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */ 431 rcu_read_lock(); 432 if (port) 433 vg = nbp_vlan_group_rcu(port); 434 else 435 vg = br_vlan_group_rcu(br); 436 437 if (!vg || !vg->num_vlans) { 438 rcu_read_unlock(); 439 goto done; 440 } 441 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC); 442 if (!af) { 443 rcu_read_unlock(); 444 goto nla_put_failure; 445 } 446 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) 447 err = br_fill_ifvlaninfo_compressed(skb, vg); 448 else 449 err = br_fill_ifvlaninfo(skb, vg); 450 451 if (port && (port->flags & BR_VLAN_TUNNEL)) 452 err = br_fill_vlan_tunnel_info(skb, vg); 453 rcu_read_unlock(); 454 if (err) 455 goto nla_put_failure; 456 nla_nest_end(skb, af); 457 } 458 459 done: 460 nlmsg_end(skb, nlh); 461 return 0; 462 463 nla_put_failure: 464 nlmsg_cancel(skb, nlh); 465 return -EMSGSIZE; 466 } 467 468 /* Notify listeners of a change in bridge or port information */ 469 void br_ifinfo_notify(int event, const struct net_bridge *br, 470 const struct net_bridge_port *port) 471 { 472 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; 473 struct net_device *dev; 474 struct sk_buff *skb; 475 int err = -ENOBUFS; 476 struct net *net; 477 u16 port_no = 0; 478 479 if (WARN_ON(!port && !br)) 480 return; 481 482 if (port) { 483 dev = port->dev; 484 br = port->br; 485 port_no = port->port_no; 486 } else { 487 dev = br->dev; 488 } 489 490 net = dev_net(dev); 491 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event); 492 493 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC); 494 if (skb == NULL) 495 goto errout; 496 497 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev); 498 if (err < 0) { 499 /* -EMSGSIZE implies BUG in br_nlmsg_size() */ 500 WARN_ON(err == -EMSGSIZE); 501 kfree_skb(skb); 502 goto errout; 503 } 504 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); 505 return; 506 errout: 507 rtnl_set_sk_err(net, RTNLGRP_LINK, err); 508 } 509 510 /* 511 * Dump information about all ports, in response to GETLINK 512 */ 513 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, 514 struct net_device *dev, u32 filter_mask, int nlflags) 515 { 516 struct net_bridge_port *port = br_port_get_rtnl(dev); 517 518 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && 519 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) 520 return 0; 521 522 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, 523 filter_mask, dev); 524 } 525 526 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, 527 int cmd, struct bridge_vlan_info *vinfo, bool *changed, 528 struct netlink_ext_ack *extack) 529 { 530 bool curr_change; 531 int err = 0; 532 533 switch (cmd) { 534 case RTM_SETLINK: 535 if (p) { 536 /* if the MASTER flag is set this will act on the global 537 * per-VLAN entry as well 538 */ 539 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags, 540 &curr_change, extack); 541 } else { 542 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; 543 err = br_vlan_add(br, vinfo->vid, vinfo->flags, 544 &curr_change, extack); 545 } 546 if (curr_change) 547 *changed = true; 548 break; 549 550 case RTM_DELLINK: 551 if (p) { 552 if (!nbp_vlan_delete(p, vinfo->vid)) 553 *changed = true; 554 555 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) && 556 !br_vlan_delete(p->br, vinfo->vid)) 557 *changed = true; 558 } else if (!br_vlan_delete(br, vinfo->vid)) { 559 *changed = true; 560 } 561 break; 562 } 563 564 return err; 565 } 566 567 int br_process_vlan_info(struct net_bridge *br, 568 struct net_bridge_port *p, int cmd, 569 struct bridge_vlan_info *vinfo_curr, 570 struct bridge_vlan_info **vinfo_last, 571 bool *changed, 572 struct netlink_ext_ack *extack) 573 { 574 int err, rtm_cmd; 575 576 if (!br_vlan_valid_id(vinfo_curr->vid, extack)) 577 return -EINVAL; 578 579 /* needed for vlan-only NEWVLAN/DELVLAN notifications */ 580 rtm_cmd = br_afspec_cmd_to_rtm(cmd); 581 582 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 583 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) 584 return -EINVAL; 585 *vinfo_last = vinfo_curr; 586 return 0; 587 } 588 589 if (*vinfo_last) { 590 struct bridge_vlan_info tmp_vinfo; 591 int v, v_change_start = 0; 592 593 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) 594 return -EINVAL; 595 596 memcpy(&tmp_vinfo, *vinfo_last, 597 sizeof(struct bridge_vlan_info)); 598 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) { 599 bool curr_change = false; 600 601 tmp_vinfo.vid = v; 602 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change, 603 extack); 604 if (err) 605 break; 606 if (curr_change) { 607 *changed = curr_change; 608 if (!v_change_start) 609 v_change_start = v; 610 } else { 611 /* nothing to notify yet */ 612 if (!v_change_start) 613 continue; 614 br_vlan_notify(br, p, v_change_start, 615 v - 1, rtm_cmd); 616 v_change_start = 0; 617 } 618 cond_resched(); 619 } 620 /* v_change_start is set only if the last/whole range changed */ 621 if (v_change_start) 622 br_vlan_notify(br, p, v_change_start, 623 v - 1, rtm_cmd); 624 625 *vinfo_last = NULL; 626 627 return err; 628 } 629 630 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack); 631 if (*changed) 632 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd); 633 634 return err; 635 } 636 637 static int br_afspec(struct net_bridge *br, 638 struct net_bridge_port *p, 639 struct nlattr *af_spec, 640 int cmd, bool *changed, 641 struct netlink_ext_ack *extack) 642 { 643 struct bridge_vlan_info *vinfo_curr = NULL; 644 struct bridge_vlan_info *vinfo_last = NULL; 645 struct nlattr *attr; 646 struct vtunnel_info tinfo_last = {}; 647 struct vtunnel_info tinfo_curr = {}; 648 int err = 0, rem; 649 650 nla_for_each_nested(attr, af_spec, rem) { 651 err = 0; 652 switch (nla_type(attr)) { 653 case IFLA_BRIDGE_VLAN_TUNNEL_INFO: 654 if (!p || !(p->flags & BR_VLAN_TUNNEL)) 655 return -EINVAL; 656 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr); 657 if (err) 658 return err; 659 err = br_process_vlan_tunnel_info(br, p, cmd, 660 &tinfo_curr, 661 &tinfo_last, 662 changed); 663 if (err) 664 return err; 665 break; 666 case IFLA_BRIDGE_VLAN_INFO: 667 if (nla_len(attr) != sizeof(struct bridge_vlan_info)) 668 return -EINVAL; 669 vinfo_curr = nla_data(attr); 670 err = br_process_vlan_info(br, p, cmd, vinfo_curr, 671 &vinfo_last, changed, 672 extack); 673 if (err) 674 return err; 675 break; 676 case IFLA_BRIDGE_MRP: 677 err = br_mrp_parse(br, p, attr, cmd, extack); 678 if (err) 679 return err; 680 break; 681 } 682 } 683 684 return err; 685 } 686 687 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { 688 [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, 689 [IFLA_BRPORT_COST] = { .type = NLA_U32 }, 690 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, 691 [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, 692 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, 693 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, 694 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, 695 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, 696 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, 697 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, 698 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, 699 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, 700 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 }, 701 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 }, 702 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 }, 703 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 }, 704 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 }, 705 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 }, 706 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 }, 707 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 }, 708 }; 709 710 /* Change the state of the port and notify spanning tree */ 711 static int br_set_port_state(struct net_bridge_port *p, u8 state) 712 { 713 if (state > BR_STATE_BLOCKING) 714 return -EINVAL; 715 716 /* if kernel STP is running, don't allow changes */ 717 if (p->br->stp_enabled == BR_KERNEL_STP) 718 return -EBUSY; 719 720 /* if device is not up, change is not allowed 721 * if link is not present, only allowable state is disabled 722 */ 723 if (!netif_running(p->dev) || 724 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) 725 return -ENETDOWN; 726 727 br_set_state(p, state); 728 br_port_state_selection(p->br); 729 return 0; 730 } 731 732 /* Set/clear or port flags based on attribute */ 733 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], 734 int attrtype, unsigned long mask) 735 { 736 unsigned long flags; 737 int err; 738 739 if (!tb[attrtype]) 740 return 0; 741 742 if (nla_get_u8(tb[attrtype])) 743 flags = p->flags | mask; 744 else 745 flags = p->flags & ~mask; 746 747 err = br_switchdev_set_port_flag(p, flags, mask); 748 if (err) 749 return err; 750 751 p->flags = flags; 752 return 0; 753 } 754 755 /* Process bridge protocol info on port */ 756 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) 757 { 758 unsigned long old_flags = p->flags; 759 bool br_vlan_tunnel_old = false; 760 int err; 761 762 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); 763 if (err) 764 return err; 765 766 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); 767 if (err) 768 return err; 769 770 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); 771 if (err) 772 return err; 773 774 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); 775 if (err) 776 return err; 777 778 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); 779 if (err) 780 return err; 781 782 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); 783 if (err) 784 return err; 785 786 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); 787 if (err) 788 return err; 789 790 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); 791 if (err) 792 return err; 793 794 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); 795 if (err) 796 return err; 797 798 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); 799 if (err) 800 return err; 801 802 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); 803 if (err) 804 return err; 805 806 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; 807 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); 808 if (err) 809 return err; 810 811 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) 812 nbp_vlan_tunnel_info_flush(p); 813 814 if (tb[IFLA_BRPORT_COST]) { 815 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); 816 if (err) 817 return err; 818 } 819 820 if (tb[IFLA_BRPORT_PRIORITY]) { 821 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); 822 if (err) 823 return err; 824 } 825 826 if (tb[IFLA_BRPORT_STATE]) { 827 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); 828 if (err) 829 return err; 830 } 831 832 if (tb[IFLA_BRPORT_FLUSH]) 833 br_fdb_delete_by_port(p->br, p, 0, 0); 834 835 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 836 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { 837 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); 838 839 err = br_multicast_set_port_router(p, mcast_router); 840 if (err) 841 return err; 842 } 843 #endif 844 845 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) { 846 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]); 847 848 if (fwd_mask & BR_GROUPFWD_MACPAUSE) 849 return -EINVAL; 850 p->group_fwd_mask = fwd_mask; 851 } 852 853 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, 854 BR_NEIGH_SUPPRESS); 855 if (err) 856 return err; 857 858 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); 859 if (err) 860 return err; 861 862 if (tb[IFLA_BRPORT_BACKUP_PORT]) { 863 struct net_device *backup_dev = NULL; 864 u32 backup_ifindex; 865 866 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]); 867 if (backup_ifindex) { 868 backup_dev = __dev_get_by_index(dev_net(p->dev), 869 backup_ifindex); 870 if (!backup_dev) 871 return -ENOENT; 872 } 873 874 err = nbp_backup_change(p, backup_dev); 875 if (err) 876 return err; 877 } 878 879 br_port_flags_change(p, old_flags ^ p->flags); 880 return 0; 881 } 882 883 /* Change state and parameters on port. */ 884 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, 885 struct netlink_ext_ack *extack) 886 { 887 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 888 struct nlattr *tb[IFLA_BRPORT_MAX + 1]; 889 struct net_bridge_port *p; 890 struct nlattr *protinfo; 891 struct nlattr *afspec; 892 bool changed = false; 893 int err = 0; 894 895 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); 896 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 897 if (!protinfo && !afspec) 898 return 0; 899 900 p = br_port_get_rtnl(dev); 901 /* We want to accept dev as bridge itself if the AF_SPEC 902 * is set to see if someone is setting vlan info on the bridge 903 */ 904 if (!p && !afspec) 905 return -EINVAL; 906 907 if (p && protinfo) { 908 if (protinfo->nla_type & NLA_F_NESTED) { 909 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX, 910 protinfo, 911 br_port_policy, 912 NULL); 913 if (err) 914 return err; 915 916 spin_lock_bh(&p->br->lock); 917 err = br_setport(p, tb); 918 spin_unlock_bh(&p->br->lock); 919 } else { 920 /* Binary compatibility with old RSTP */ 921 if (nla_len(protinfo) < sizeof(u8)) 922 return -EINVAL; 923 924 spin_lock_bh(&p->br->lock); 925 err = br_set_port_state(p, nla_get_u8(protinfo)); 926 spin_unlock_bh(&p->br->lock); 927 } 928 if (err) 929 goto out; 930 changed = true; 931 } 932 933 if (afspec) 934 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack); 935 936 if (changed) 937 br_ifinfo_notify(RTM_NEWLINK, br, p); 938 out: 939 return err; 940 } 941 942 /* Delete port information */ 943 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) 944 { 945 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 946 struct net_bridge_port *p; 947 struct nlattr *afspec; 948 bool changed = false; 949 int err = 0; 950 951 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 952 if (!afspec) 953 return 0; 954 955 p = br_port_get_rtnl(dev); 956 /* We want to accept dev as bridge itself as well */ 957 if (!p && !(dev->priv_flags & IFF_EBRIDGE)) 958 return -EINVAL; 959 960 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL); 961 if (changed) 962 /* Send RTM_NEWLINK because userspace 963 * expects RTM_NEWLINK for vlan dels 964 */ 965 br_ifinfo_notify(RTM_NEWLINK, br, p); 966 967 return err; 968 } 969 970 static int br_validate(struct nlattr *tb[], struct nlattr *data[], 971 struct netlink_ext_ack *extack) 972 { 973 if (tb[IFLA_ADDRESS]) { 974 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 975 return -EINVAL; 976 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 977 return -EADDRNOTAVAIL; 978 } 979 980 if (!data) 981 return 0; 982 983 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 984 if (data[IFLA_BR_VLAN_PROTOCOL]) { 985 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) { 986 case htons(ETH_P_8021Q): 987 case htons(ETH_P_8021AD): 988 break; 989 default: 990 return -EPROTONOSUPPORT; 991 } 992 } 993 994 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 995 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 996 997 if (defpvid >= VLAN_VID_MASK) 998 return -EINVAL; 999 } 1000 #endif 1001 1002 return 0; 1003 } 1004 1005 static int br_port_slave_changelink(struct net_device *brdev, 1006 struct net_device *dev, 1007 struct nlattr *tb[], 1008 struct nlattr *data[], 1009 struct netlink_ext_ack *extack) 1010 { 1011 struct net_bridge *br = netdev_priv(brdev); 1012 int ret; 1013 1014 if (!data) 1015 return 0; 1016 1017 spin_lock_bh(&br->lock); 1018 ret = br_setport(br_port_get_rtnl(dev), data); 1019 spin_unlock_bh(&br->lock); 1020 1021 return ret; 1022 } 1023 1024 static int br_port_fill_slave_info(struct sk_buff *skb, 1025 const struct net_device *brdev, 1026 const struct net_device *dev) 1027 { 1028 return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); 1029 } 1030 1031 static size_t br_port_get_slave_size(const struct net_device *brdev, 1032 const struct net_device *dev) 1033 { 1034 return br_port_info_size(); 1035 } 1036 1037 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { 1038 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, 1039 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, 1040 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, 1041 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, 1042 [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, 1043 [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, 1044 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, 1045 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, 1046 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, 1047 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, 1048 .len = ETH_ALEN }, 1049 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, 1050 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, 1051 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, 1052 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, 1053 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, 1054 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, 1055 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 1056 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 1057 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 1058 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 1059 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 1060 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 1061 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 1062 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 1063 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, 1064 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, 1065 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, 1066 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, 1067 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, 1068 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 }, 1069 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, 1070 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 }, 1071 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 }, 1072 [IFLA_BR_MULTI_BOOLOPT] = { .type = NLA_EXACT_LEN, 1073 .len = sizeof(struct br_boolopt_multi) }, 1074 }; 1075 1076 static int br_changelink(struct net_device *brdev, struct nlattr *tb[], 1077 struct nlattr *data[], 1078 struct netlink_ext_ack *extack) 1079 { 1080 struct net_bridge *br = netdev_priv(brdev); 1081 int err; 1082 1083 if (!data) 1084 return 0; 1085 1086 if (data[IFLA_BR_FORWARD_DELAY]) { 1087 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); 1088 if (err) 1089 return err; 1090 } 1091 1092 if (data[IFLA_BR_HELLO_TIME]) { 1093 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); 1094 if (err) 1095 return err; 1096 } 1097 1098 if (data[IFLA_BR_MAX_AGE]) { 1099 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); 1100 if (err) 1101 return err; 1102 } 1103 1104 if (data[IFLA_BR_AGEING_TIME]) { 1105 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); 1106 if (err) 1107 return err; 1108 } 1109 1110 if (data[IFLA_BR_STP_STATE]) { 1111 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); 1112 1113 err = br_stp_set_enabled(br, stp_enabled, extack); 1114 if (err) 1115 return err; 1116 } 1117 1118 if (data[IFLA_BR_PRIORITY]) { 1119 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); 1120 1121 br_stp_set_bridge_priority(br, priority); 1122 } 1123 1124 if (data[IFLA_BR_VLAN_FILTERING]) { 1125 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); 1126 1127 err = __br_vlan_filter_toggle(br, vlan_filter); 1128 if (err) 1129 return err; 1130 } 1131 1132 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1133 if (data[IFLA_BR_VLAN_PROTOCOL]) { 1134 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); 1135 1136 err = __br_vlan_set_proto(br, vlan_proto); 1137 if (err) 1138 return err; 1139 } 1140 1141 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1142 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1143 1144 err = __br_vlan_set_default_pvid(br, defpvid, extack); 1145 if (err) 1146 return err; 1147 } 1148 1149 if (data[IFLA_BR_VLAN_STATS_ENABLED]) { 1150 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); 1151 1152 err = br_vlan_set_stats(br, vlan_stats); 1153 if (err) 1154 return err; 1155 } 1156 1157 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) { 1158 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]); 1159 1160 err = br_vlan_set_stats_per_port(br, per_port); 1161 if (err) 1162 return err; 1163 } 1164 #endif 1165 1166 if (data[IFLA_BR_GROUP_FWD_MASK]) { 1167 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); 1168 1169 if (fwd_mask & BR_GROUPFWD_RESTRICTED) 1170 return -EINVAL; 1171 br->group_fwd_mask = fwd_mask; 1172 } 1173 1174 if (data[IFLA_BR_GROUP_ADDR]) { 1175 u8 new_addr[ETH_ALEN]; 1176 1177 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) 1178 return -EINVAL; 1179 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); 1180 if (!is_link_local_ether_addr(new_addr)) 1181 return -EINVAL; 1182 if (new_addr[5] == 1 || /* 802.3x Pause address */ 1183 new_addr[5] == 2 || /* 802.3ad Slow protocols */ 1184 new_addr[5] == 3) /* 802.1X PAE address */ 1185 return -EINVAL; 1186 spin_lock_bh(&br->lock); 1187 memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); 1188 spin_unlock_bh(&br->lock); 1189 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); 1190 br_recalculate_fwd_mask(br); 1191 } 1192 1193 if (data[IFLA_BR_FDB_FLUSH]) 1194 br_fdb_flush(br); 1195 1196 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1197 if (data[IFLA_BR_MCAST_ROUTER]) { 1198 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); 1199 1200 err = br_multicast_set_router(br, multicast_router); 1201 if (err) 1202 return err; 1203 } 1204 1205 if (data[IFLA_BR_MCAST_SNOOPING]) { 1206 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); 1207 1208 br_multicast_toggle(br, mcast_snooping); 1209 } 1210 1211 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { 1212 u8 val; 1213 1214 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); 1215 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); 1216 } 1217 1218 if (data[IFLA_BR_MCAST_QUERIER]) { 1219 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); 1220 1221 err = br_multicast_set_querier(br, mcast_querier); 1222 if (err) 1223 return err; 1224 } 1225 1226 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) 1227 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n", 1228 RHT_ELASTICITY); 1229 1230 if (data[IFLA_BR_MCAST_HASH_MAX]) 1231 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); 1232 1233 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { 1234 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); 1235 1236 br->multicast_last_member_count = val; 1237 } 1238 1239 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { 1240 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); 1241 1242 br->multicast_startup_query_count = val; 1243 } 1244 1245 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { 1246 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); 1247 1248 br->multicast_last_member_interval = clock_t_to_jiffies(val); 1249 } 1250 1251 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { 1252 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); 1253 1254 br->multicast_membership_interval = clock_t_to_jiffies(val); 1255 } 1256 1257 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { 1258 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); 1259 1260 br->multicast_querier_interval = clock_t_to_jiffies(val); 1261 } 1262 1263 if (data[IFLA_BR_MCAST_QUERY_INTVL]) { 1264 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); 1265 1266 br->multicast_query_interval = clock_t_to_jiffies(val); 1267 } 1268 1269 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { 1270 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); 1271 1272 br->multicast_query_response_interval = clock_t_to_jiffies(val); 1273 } 1274 1275 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { 1276 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); 1277 1278 br->multicast_startup_query_interval = clock_t_to_jiffies(val); 1279 } 1280 1281 if (data[IFLA_BR_MCAST_STATS_ENABLED]) { 1282 __u8 mcast_stats; 1283 1284 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]); 1285 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats); 1286 } 1287 1288 if (data[IFLA_BR_MCAST_IGMP_VERSION]) { 1289 __u8 igmp_version; 1290 1291 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]); 1292 err = br_multicast_set_igmp_version(br, igmp_version); 1293 if (err) 1294 return err; 1295 } 1296 1297 #if IS_ENABLED(CONFIG_IPV6) 1298 if (data[IFLA_BR_MCAST_MLD_VERSION]) { 1299 __u8 mld_version; 1300 1301 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]); 1302 err = br_multicast_set_mld_version(br, mld_version); 1303 if (err) 1304 return err; 1305 } 1306 #endif 1307 #endif 1308 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1309 if (data[IFLA_BR_NF_CALL_IPTABLES]) { 1310 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); 1311 1312 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); 1313 } 1314 1315 if (data[IFLA_BR_NF_CALL_IP6TABLES]) { 1316 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); 1317 1318 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); 1319 } 1320 1321 if (data[IFLA_BR_NF_CALL_ARPTABLES]) { 1322 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); 1323 1324 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); 1325 } 1326 #endif 1327 1328 if (data[IFLA_BR_MULTI_BOOLOPT]) { 1329 struct br_boolopt_multi *bm; 1330 1331 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]); 1332 err = br_boolopt_multi_toggle(br, bm, extack); 1333 if (err) 1334 return err; 1335 } 1336 1337 return 0; 1338 } 1339 1340 static int br_dev_newlink(struct net *src_net, struct net_device *dev, 1341 struct nlattr *tb[], struct nlattr *data[], 1342 struct netlink_ext_ack *extack) 1343 { 1344 struct net_bridge *br = netdev_priv(dev); 1345 int err; 1346 1347 err = register_netdevice(dev); 1348 if (err) 1349 return err; 1350 1351 if (tb[IFLA_ADDRESS]) { 1352 spin_lock_bh(&br->lock); 1353 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); 1354 spin_unlock_bh(&br->lock); 1355 } 1356 1357 err = br_changelink(dev, tb, data, extack); 1358 if (err) 1359 br_dev_delete(dev, NULL); 1360 1361 return err; 1362 } 1363 1364 static size_t br_get_size(const struct net_device *brdev) 1365 { 1366 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ 1367 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ 1368 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ 1369 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ 1370 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ 1371 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ 1372 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ 1373 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1374 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ 1375 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ 1376 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ 1377 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */ 1378 #endif 1379 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ 1380 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ 1381 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ 1382 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ 1383 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ 1384 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ 1385 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ 1386 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ 1387 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ 1388 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ 1389 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ 1390 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ 1391 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1392 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ 1393 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ 1394 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ 1395 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ 1396 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */ 1397 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ 1398 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ 1399 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ 1400 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ 1401 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ 1402 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ 1403 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ 1404 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ 1405 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ 1406 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ 1407 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */ 1408 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */ 1409 #endif 1410 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1411 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ 1412 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ 1413 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ 1414 #endif 1415 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */ 1416 0; 1417 } 1418 1419 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) 1420 { 1421 struct net_bridge *br = netdev_priv(brdev); 1422 u32 forward_delay = jiffies_to_clock_t(br->forward_delay); 1423 u32 hello_time = jiffies_to_clock_t(br->hello_time); 1424 u32 age_time = jiffies_to_clock_t(br->max_age); 1425 u32 ageing_time = jiffies_to_clock_t(br->ageing_time); 1426 u32 stp_enabled = br->stp_enabled; 1427 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; 1428 u8 vlan_enabled = br_vlan_enabled(br->dev); 1429 struct br_boolopt_multi bm; 1430 u64 clockval; 1431 1432 clockval = br_timer_value(&br->hello_timer); 1433 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) 1434 return -EMSGSIZE; 1435 clockval = br_timer_value(&br->tcn_timer); 1436 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) 1437 return -EMSGSIZE; 1438 clockval = br_timer_value(&br->topology_change_timer); 1439 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, 1440 IFLA_BR_PAD)) 1441 return -EMSGSIZE; 1442 clockval = br_timer_value(&br->gc_work.timer); 1443 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) 1444 return -EMSGSIZE; 1445 1446 br_boolopt_multi_get(br, &bm); 1447 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || 1448 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || 1449 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || 1450 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || 1451 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || 1452 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || 1453 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || 1454 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || 1455 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), 1456 &br->bridge_id) || 1457 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), 1458 &br->designated_root) || 1459 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || 1460 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || 1461 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || 1462 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, 1463 br->topology_change_detected) || 1464 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) || 1465 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm)) 1466 return -EMSGSIZE; 1467 1468 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1469 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || 1470 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || 1471 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, 1472 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) || 1473 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT, 1474 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT))) 1475 return -EMSGSIZE; 1476 #endif 1477 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1478 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || 1479 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, 1480 br_opt_get(br, BROPT_MULTICAST_ENABLED)) || 1481 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, 1482 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) || 1483 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, 1484 br_opt_get(br, BROPT_MULTICAST_QUERIER)) || 1485 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED, 1486 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) || 1487 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) || 1488 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || 1489 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, 1490 br->multicast_last_member_count) || 1491 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, 1492 br->multicast_startup_query_count) || 1493 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION, 1494 br->multicast_igmp_version)) 1495 return -EMSGSIZE; 1496 #if IS_ENABLED(CONFIG_IPV6) 1497 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION, 1498 br->multicast_mld_version)) 1499 return -EMSGSIZE; 1500 #endif 1501 clockval = jiffies_to_clock_t(br->multicast_last_member_interval); 1502 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, 1503 IFLA_BR_PAD)) 1504 return -EMSGSIZE; 1505 clockval = jiffies_to_clock_t(br->multicast_membership_interval); 1506 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, 1507 IFLA_BR_PAD)) 1508 return -EMSGSIZE; 1509 clockval = jiffies_to_clock_t(br->multicast_querier_interval); 1510 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, 1511 IFLA_BR_PAD)) 1512 return -EMSGSIZE; 1513 clockval = jiffies_to_clock_t(br->multicast_query_interval); 1514 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, 1515 IFLA_BR_PAD)) 1516 return -EMSGSIZE; 1517 clockval = jiffies_to_clock_t(br->multicast_query_response_interval); 1518 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, 1519 IFLA_BR_PAD)) 1520 return -EMSGSIZE; 1521 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); 1522 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, 1523 IFLA_BR_PAD)) 1524 return -EMSGSIZE; 1525 #endif 1526 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1527 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, 1528 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) || 1529 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, 1530 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) || 1531 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, 1532 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0)) 1533 return -EMSGSIZE; 1534 #endif 1535 1536 return 0; 1537 } 1538 1539 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr) 1540 { 1541 struct net_bridge_port *p = NULL; 1542 struct net_bridge_vlan_group *vg; 1543 struct net_bridge_vlan *v; 1544 struct net_bridge *br; 1545 int numvls = 0; 1546 1547 switch (attr) { 1548 case IFLA_STATS_LINK_XSTATS: 1549 br = netdev_priv(dev); 1550 vg = br_vlan_group(br); 1551 break; 1552 case IFLA_STATS_LINK_XSTATS_SLAVE: 1553 p = br_port_get_rtnl(dev); 1554 if (!p) 1555 return 0; 1556 br = p->br; 1557 vg = nbp_vlan_group(p); 1558 break; 1559 default: 1560 return 0; 1561 } 1562 1563 if (vg) { 1564 /* we need to count all, even placeholder entries */ 1565 list_for_each_entry(v, &vg->vlan_list, vlist) 1566 numvls++; 1567 } 1568 1569 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + 1570 nla_total_size(sizeof(struct br_mcast_stats)) + 1571 nla_total_size(0); 1572 } 1573 1574 static int br_fill_linkxstats(struct sk_buff *skb, 1575 const struct net_device *dev, 1576 int *prividx, int attr) 1577 { 1578 struct nlattr *nla __maybe_unused; 1579 struct net_bridge_port *p = NULL; 1580 struct net_bridge_vlan_group *vg; 1581 struct net_bridge_vlan *v; 1582 struct net_bridge *br; 1583 struct nlattr *nest; 1584 int vl_idx = 0; 1585 1586 switch (attr) { 1587 case IFLA_STATS_LINK_XSTATS: 1588 br = netdev_priv(dev); 1589 vg = br_vlan_group(br); 1590 break; 1591 case IFLA_STATS_LINK_XSTATS_SLAVE: 1592 p = br_port_get_rtnl(dev); 1593 if (!p) 1594 return 0; 1595 br = p->br; 1596 vg = nbp_vlan_group(p); 1597 break; 1598 default: 1599 return -EINVAL; 1600 } 1601 1602 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE); 1603 if (!nest) 1604 return -EMSGSIZE; 1605 1606 if (vg) { 1607 u16 pvid; 1608 1609 pvid = br_get_pvid(vg); 1610 list_for_each_entry(v, &vg->vlan_list, vlist) { 1611 struct bridge_vlan_xstats vxi; 1612 struct br_vlan_stats stats; 1613 1614 if (++vl_idx < *prividx) 1615 continue; 1616 memset(&vxi, 0, sizeof(vxi)); 1617 vxi.vid = v->vid; 1618 vxi.flags = v->flags; 1619 if (v->vid == pvid) 1620 vxi.flags |= BRIDGE_VLAN_INFO_PVID; 1621 br_vlan_get_stats(v, &stats); 1622 vxi.rx_bytes = stats.rx_bytes; 1623 vxi.rx_packets = stats.rx_packets; 1624 vxi.tx_bytes = stats.tx_bytes; 1625 vxi.tx_packets = stats.tx_packets; 1626 1627 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) 1628 goto nla_put_failure; 1629 } 1630 } 1631 1632 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1633 if (++vl_idx >= *prividx) { 1634 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST, 1635 sizeof(struct br_mcast_stats), 1636 BRIDGE_XSTATS_PAD); 1637 if (!nla) 1638 goto nla_put_failure; 1639 br_multicast_get_stats(br, p, nla_data(nla)); 1640 } 1641 #endif 1642 1643 if (p) { 1644 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP, 1645 sizeof(p->stp_xstats), 1646 BRIDGE_XSTATS_PAD); 1647 if (!nla) 1648 goto nla_put_failure; 1649 1650 spin_lock_bh(&br->lock); 1651 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats)); 1652 spin_unlock_bh(&br->lock); 1653 } 1654 1655 nla_nest_end(skb, nest); 1656 *prividx = 0; 1657 1658 return 0; 1659 1660 nla_put_failure: 1661 nla_nest_end(skb, nest); 1662 *prividx = vl_idx; 1663 1664 return -EMSGSIZE; 1665 } 1666 1667 static struct rtnl_af_ops br_af_ops __read_mostly = { 1668 .family = AF_BRIDGE, 1669 .get_link_af_size = br_get_link_af_size_filtered, 1670 }; 1671 1672 struct rtnl_link_ops br_link_ops __read_mostly = { 1673 .kind = "bridge", 1674 .priv_size = sizeof(struct net_bridge), 1675 .setup = br_dev_setup, 1676 .maxtype = IFLA_BR_MAX, 1677 .policy = br_policy, 1678 .validate = br_validate, 1679 .newlink = br_dev_newlink, 1680 .changelink = br_changelink, 1681 .dellink = br_dev_delete, 1682 .get_size = br_get_size, 1683 .fill_info = br_fill_info, 1684 .fill_linkxstats = br_fill_linkxstats, 1685 .get_linkxstats_size = br_get_linkxstats_size, 1686 1687 .slave_maxtype = IFLA_BRPORT_MAX, 1688 .slave_policy = br_port_policy, 1689 .slave_changelink = br_port_slave_changelink, 1690 .get_slave_size = br_port_get_slave_size, 1691 .fill_slave_info = br_port_fill_slave_info, 1692 }; 1693 1694 int __init br_netlink_init(void) 1695 { 1696 int err; 1697 1698 br_mdb_init(); 1699 br_vlan_rtnl_init(); 1700 rtnl_af_register(&br_af_ops); 1701 1702 err = rtnl_link_register(&br_link_ops); 1703 if (err) 1704 goto out_af; 1705 1706 return 0; 1707 1708 out_af: 1709 rtnl_af_unregister(&br_af_ops); 1710 br_mdb_uninit(); 1711 return err; 1712 } 1713 1714 void br_netlink_fini(void) 1715 { 1716 br_mdb_uninit(); 1717 br_vlan_rtnl_uninit(); 1718 rtnl_af_unregister(&br_af_ops); 1719 rtnl_link_unregister(&br_link_ops); 1720 } 1721