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; 456 457 nla_nest_end(skb, af); 458 } 459 460 if (filter_mask & RTEXT_FILTER_MRP) { 461 struct nlattr *af; 462 int err; 463 464 if (!br_mrp_enabled(br) || port) 465 goto done; 466 467 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC); 468 if (!af) 469 goto nla_put_failure; 470 471 rcu_read_lock(); 472 err = br_mrp_fill_info(skb, br); 473 rcu_read_unlock(); 474 475 if (err) 476 goto nla_put_failure; 477 478 nla_nest_end(skb, af); 479 } 480 481 done: 482 nlmsg_end(skb, nlh); 483 return 0; 484 485 nla_put_failure: 486 nlmsg_cancel(skb, nlh); 487 return -EMSGSIZE; 488 } 489 490 /* Notify listeners of a change in bridge or port information */ 491 void br_ifinfo_notify(int event, const struct net_bridge *br, 492 const struct net_bridge_port *port) 493 { 494 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; 495 struct net_device *dev; 496 struct sk_buff *skb; 497 int err = -ENOBUFS; 498 struct net *net; 499 u16 port_no = 0; 500 501 if (WARN_ON(!port && !br)) 502 return; 503 504 if (port) { 505 dev = port->dev; 506 br = port->br; 507 port_no = port->port_no; 508 } else { 509 dev = br->dev; 510 } 511 512 net = dev_net(dev); 513 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event); 514 515 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC); 516 if (skb == NULL) 517 goto errout; 518 519 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev); 520 if (err < 0) { 521 /* -EMSGSIZE implies BUG in br_nlmsg_size() */ 522 WARN_ON(err == -EMSGSIZE); 523 kfree_skb(skb); 524 goto errout; 525 } 526 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); 527 return; 528 errout: 529 rtnl_set_sk_err(net, RTNLGRP_LINK, err); 530 } 531 532 /* 533 * Dump information about all ports, in response to GETLINK 534 */ 535 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, 536 struct net_device *dev, u32 filter_mask, int nlflags) 537 { 538 struct net_bridge_port *port = br_port_get_rtnl(dev); 539 540 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && 541 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) && 542 !(filter_mask & RTEXT_FILTER_MRP)) 543 return 0; 544 545 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, 546 filter_mask, dev); 547 } 548 549 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, 550 int cmd, struct bridge_vlan_info *vinfo, bool *changed, 551 struct netlink_ext_ack *extack) 552 { 553 bool curr_change; 554 int err = 0; 555 556 switch (cmd) { 557 case RTM_SETLINK: 558 if (p) { 559 /* if the MASTER flag is set this will act on the global 560 * per-VLAN entry as well 561 */ 562 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags, 563 &curr_change, extack); 564 } else { 565 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; 566 err = br_vlan_add(br, vinfo->vid, vinfo->flags, 567 &curr_change, extack); 568 } 569 if (curr_change) 570 *changed = true; 571 break; 572 573 case RTM_DELLINK: 574 if (p) { 575 if (!nbp_vlan_delete(p, vinfo->vid)) 576 *changed = true; 577 578 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) && 579 !br_vlan_delete(p->br, vinfo->vid)) 580 *changed = true; 581 } else if (!br_vlan_delete(br, vinfo->vid)) { 582 *changed = true; 583 } 584 break; 585 } 586 587 return err; 588 } 589 590 int br_process_vlan_info(struct net_bridge *br, 591 struct net_bridge_port *p, int cmd, 592 struct bridge_vlan_info *vinfo_curr, 593 struct bridge_vlan_info **vinfo_last, 594 bool *changed, 595 struct netlink_ext_ack *extack) 596 { 597 int err, rtm_cmd; 598 599 if (!br_vlan_valid_id(vinfo_curr->vid, extack)) 600 return -EINVAL; 601 602 /* needed for vlan-only NEWVLAN/DELVLAN notifications */ 603 rtm_cmd = br_afspec_cmd_to_rtm(cmd); 604 605 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 606 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) 607 return -EINVAL; 608 *vinfo_last = vinfo_curr; 609 return 0; 610 } 611 612 if (*vinfo_last) { 613 struct bridge_vlan_info tmp_vinfo; 614 int v, v_change_start = 0; 615 616 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) 617 return -EINVAL; 618 619 memcpy(&tmp_vinfo, *vinfo_last, 620 sizeof(struct bridge_vlan_info)); 621 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) { 622 bool curr_change = false; 623 624 tmp_vinfo.vid = v; 625 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change, 626 extack); 627 if (err) 628 break; 629 if (curr_change) { 630 *changed = curr_change; 631 if (!v_change_start) 632 v_change_start = v; 633 } else { 634 /* nothing to notify yet */ 635 if (!v_change_start) 636 continue; 637 br_vlan_notify(br, p, v_change_start, 638 v - 1, rtm_cmd); 639 v_change_start = 0; 640 } 641 cond_resched(); 642 } 643 /* v_change_start is set only if the last/whole range changed */ 644 if (v_change_start) 645 br_vlan_notify(br, p, v_change_start, 646 v - 1, rtm_cmd); 647 648 *vinfo_last = NULL; 649 650 return err; 651 } 652 653 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack); 654 if (*changed) 655 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd); 656 657 return err; 658 } 659 660 static int br_afspec(struct net_bridge *br, 661 struct net_bridge_port *p, 662 struct nlattr *af_spec, 663 int cmd, bool *changed, 664 struct netlink_ext_ack *extack) 665 { 666 struct bridge_vlan_info *vinfo_curr = NULL; 667 struct bridge_vlan_info *vinfo_last = NULL; 668 struct nlattr *attr; 669 struct vtunnel_info tinfo_last = {}; 670 struct vtunnel_info tinfo_curr = {}; 671 int err = 0, rem; 672 673 nla_for_each_nested(attr, af_spec, rem) { 674 err = 0; 675 switch (nla_type(attr)) { 676 case IFLA_BRIDGE_VLAN_TUNNEL_INFO: 677 if (!p || !(p->flags & BR_VLAN_TUNNEL)) 678 return -EINVAL; 679 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr); 680 if (err) 681 return err; 682 err = br_process_vlan_tunnel_info(br, p, cmd, 683 &tinfo_curr, 684 &tinfo_last, 685 changed); 686 if (err) 687 return err; 688 break; 689 case IFLA_BRIDGE_VLAN_INFO: 690 if (nla_len(attr) != sizeof(struct bridge_vlan_info)) 691 return -EINVAL; 692 vinfo_curr = nla_data(attr); 693 err = br_process_vlan_info(br, p, cmd, vinfo_curr, 694 &vinfo_last, changed, 695 extack); 696 if (err) 697 return err; 698 break; 699 case IFLA_BRIDGE_MRP: 700 err = br_mrp_parse(br, p, attr, cmd, extack); 701 if (err) 702 return err; 703 break; 704 } 705 } 706 707 return err; 708 } 709 710 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { 711 [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, 712 [IFLA_BRPORT_COST] = { .type = NLA_U32 }, 713 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, 714 [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, 715 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, 716 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, 717 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, 718 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, 719 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, 720 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, 721 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, 722 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, 723 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 }, 724 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 }, 725 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 }, 726 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 }, 727 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 }, 728 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 }, 729 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 }, 730 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 }, 731 }; 732 733 /* Change the state of the port and notify spanning tree */ 734 static int br_set_port_state(struct net_bridge_port *p, u8 state) 735 { 736 if (state > BR_STATE_BLOCKING) 737 return -EINVAL; 738 739 /* if kernel STP is running, don't allow changes */ 740 if (p->br->stp_enabled == BR_KERNEL_STP) 741 return -EBUSY; 742 743 /* if device is not up, change is not allowed 744 * if link is not present, only allowable state is disabled 745 */ 746 if (!netif_running(p->dev) || 747 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) 748 return -ENETDOWN; 749 750 br_set_state(p, state); 751 br_port_state_selection(p->br); 752 return 0; 753 } 754 755 /* Set/clear or port flags based on attribute */ 756 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], 757 int attrtype, unsigned long mask) 758 { 759 unsigned long flags; 760 int err; 761 762 if (!tb[attrtype]) 763 return 0; 764 765 if (nla_get_u8(tb[attrtype])) 766 flags = p->flags | mask; 767 else 768 flags = p->flags & ~mask; 769 770 err = br_switchdev_set_port_flag(p, flags, mask); 771 if (err) 772 return err; 773 774 p->flags = flags; 775 return 0; 776 } 777 778 /* Process bridge protocol info on port */ 779 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) 780 { 781 unsigned long old_flags = p->flags; 782 bool br_vlan_tunnel_old = false; 783 int err; 784 785 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); 786 if (err) 787 return err; 788 789 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); 790 if (err) 791 return err; 792 793 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); 794 if (err) 795 return err; 796 797 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); 798 if (err) 799 return err; 800 801 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); 802 if (err) 803 return err; 804 805 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); 806 if (err) 807 return err; 808 809 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); 810 if (err) 811 return err; 812 813 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); 814 if (err) 815 return err; 816 817 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); 818 if (err) 819 return err; 820 821 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); 822 if (err) 823 return err; 824 825 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); 826 if (err) 827 return err; 828 829 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; 830 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); 831 if (err) 832 return err; 833 834 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) 835 nbp_vlan_tunnel_info_flush(p); 836 837 if (tb[IFLA_BRPORT_COST]) { 838 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); 839 if (err) 840 return err; 841 } 842 843 if (tb[IFLA_BRPORT_PRIORITY]) { 844 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); 845 if (err) 846 return err; 847 } 848 849 if (tb[IFLA_BRPORT_STATE]) { 850 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); 851 if (err) 852 return err; 853 } 854 855 if (tb[IFLA_BRPORT_FLUSH]) 856 br_fdb_delete_by_port(p->br, p, 0, 0); 857 858 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 859 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { 860 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); 861 862 err = br_multicast_set_port_router(p, mcast_router); 863 if (err) 864 return err; 865 } 866 #endif 867 868 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) { 869 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]); 870 871 if (fwd_mask & BR_GROUPFWD_MACPAUSE) 872 return -EINVAL; 873 p->group_fwd_mask = fwd_mask; 874 } 875 876 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, 877 BR_NEIGH_SUPPRESS); 878 if (err) 879 return err; 880 881 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); 882 if (err) 883 return err; 884 885 if (tb[IFLA_BRPORT_BACKUP_PORT]) { 886 struct net_device *backup_dev = NULL; 887 u32 backup_ifindex; 888 889 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]); 890 if (backup_ifindex) { 891 backup_dev = __dev_get_by_index(dev_net(p->dev), 892 backup_ifindex); 893 if (!backup_dev) 894 return -ENOENT; 895 } 896 897 err = nbp_backup_change(p, backup_dev); 898 if (err) 899 return err; 900 } 901 902 br_port_flags_change(p, old_flags ^ p->flags); 903 return 0; 904 } 905 906 /* Change state and parameters on port. */ 907 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, 908 struct netlink_ext_ack *extack) 909 { 910 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 911 struct nlattr *tb[IFLA_BRPORT_MAX + 1]; 912 struct net_bridge_port *p; 913 struct nlattr *protinfo; 914 struct nlattr *afspec; 915 bool changed = false; 916 int err = 0; 917 918 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); 919 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 920 if (!protinfo && !afspec) 921 return 0; 922 923 p = br_port_get_rtnl(dev); 924 /* We want to accept dev as bridge itself if the AF_SPEC 925 * is set to see if someone is setting vlan info on the bridge 926 */ 927 if (!p && !afspec) 928 return -EINVAL; 929 930 if (p && protinfo) { 931 if (protinfo->nla_type & NLA_F_NESTED) { 932 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX, 933 protinfo, 934 br_port_policy, 935 NULL); 936 if (err) 937 return err; 938 939 spin_lock_bh(&p->br->lock); 940 err = br_setport(p, tb); 941 spin_unlock_bh(&p->br->lock); 942 } else { 943 /* Binary compatibility with old RSTP */ 944 if (nla_len(protinfo) < sizeof(u8)) 945 return -EINVAL; 946 947 spin_lock_bh(&p->br->lock); 948 err = br_set_port_state(p, nla_get_u8(protinfo)); 949 spin_unlock_bh(&p->br->lock); 950 } 951 if (err) 952 goto out; 953 changed = true; 954 } 955 956 if (afspec) 957 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack); 958 959 if (changed) 960 br_ifinfo_notify(RTM_NEWLINK, br, p); 961 out: 962 return err; 963 } 964 965 /* Delete port information */ 966 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) 967 { 968 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 969 struct net_bridge_port *p; 970 struct nlattr *afspec; 971 bool changed = false; 972 int err = 0; 973 974 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 975 if (!afspec) 976 return 0; 977 978 p = br_port_get_rtnl(dev); 979 /* We want to accept dev as bridge itself as well */ 980 if (!p && !(dev->priv_flags & IFF_EBRIDGE)) 981 return -EINVAL; 982 983 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL); 984 if (changed) 985 /* Send RTM_NEWLINK because userspace 986 * expects RTM_NEWLINK for vlan dels 987 */ 988 br_ifinfo_notify(RTM_NEWLINK, br, p); 989 990 return err; 991 } 992 993 static int br_validate(struct nlattr *tb[], struct nlattr *data[], 994 struct netlink_ext_ack *extack) 995 { 996 if (tb[IFLA_ADDRESS]) { 997 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 998 return -EINVAL; 999 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 1000 return -EADDRNOTAVAIL; 1001 } 1002 1003 if (!data) 1004 return 0; 1005 1006 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1007 if (data[IFLA_BR_VLAN_PROTOCOL]) { 1008 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) { 1009 case htons(ETH_P_8021Q): 1010 case htons(ETH_P_8021AD): 1011 break; 1012 default: 1013 return -EPROTONOSUPPORT; 1014 } 1015 } 1016 1017 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1018 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1019 1020 if (defpvid >= VLAN_VID_MASK) 1021 return -EINVAL; 1022 } 1023 #endif 1024 1025 return 0; 1026 } 1027 1028 static int br_port_slave_changelink(struct net_device *brdev, 1029 struct net_device *dev, 1030 struct nlattr *tb[], 1031 struct nlattr *data[], 1032 struct netlink_ext_ack *extack) 1033 { 1034 struct net_bridge *br = netdev_priv(brdev); 1035 int ret; 1036 1037 if (!data) 1038 return 0; 1039 1040 spin_lock_bh(&br->lock); 1041 ret = br_setport(br_port_get_rtnl(dev), data); 1042 spin_unlock_bh(&br->lock); 1043 1044 return ret; 1045 } 1046 1047 static int br_port_fill_slave_info(struct sk_buff *skb, 1048 const struct net_device *brdev, 1049 const struct net_device *dev) 1050 { 1051 return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); 1052 } 1053 1054 static size_t br_port_get_slave_size(const struct net_device *brdev, 1055 const struct net_device *dev) 1056 { 1057 return br_port_info_size(); 1058 } 1059 1060 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { 1061 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, 1062 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, 1063 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, 1064 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, 1065 [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, 1066 [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, 1067 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, 1068 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, 1069 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, 1070 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, 1071 .len = ETH_ALEN }, 1072 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, 1073 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, 1074 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, 1075 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, 1076 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, 1077 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, 1078 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 1079 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 1080 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 1081 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 1082 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 1083 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 1084 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 1085 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 1086 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, 1087 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, 1088 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, 1089 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, 1090 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, 1091 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 }, 1092 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, 1093 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 }, 1094 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 }, 1095 [IFLA_BR_MULTI_BOOLOPT] = { .type = NLA_EXACT_LEN, 1096 .len = sizeof(struct br_boolopt_multi) }, 1097 }; 1098 1099 static int br_changelink(struct net_device *brdev, struct nlattr *tb[], 1100 struct nlattr *data[], 1101 struct netlink_ext_ack *extack) 1102 { 1103 struct net_bridge *br = netdev_priv(brdev); 1104 int err; 1105 1106 if (!data) 1107 return 0; 1108 1109 if (data[IFLA_BR_FORWARD_DELAY]) { 1110 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); 1111 if (err) 1112 return err; 1113 } 1114 1115 if (data[IFLA_BR_HELLO_TIME]) { 1116 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); 1117 if (err) 1118 return err; 1119 } 1120 1121 if (data[IFLA_BR_MAX_AGE]) { 1122 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); 1123 if (err) 1124 return err; 1125 } 1126 1127 if (data[IFLA_BR_AGEING_TIME]) { 1128 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); 1129 if (err) 1130 return err; 1131 } 1132 1133 if (data[IFLA_BR_STP_STATE]) { 1134 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); 1135 1136 err = br_stp_set_enabled(br, stp_enabled, extack); 1137 if (err) 1138 return err; 1139 } 1140 1141 if (data[IFLA_BR_PRIORITY]) { 1142 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); 1143 1144 br_stp_set_bridge_priority(br, priority); 1145 } 1146 1147 if (data[IFLA_BR_VLAN_FILTERING]) { 1148 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); 1149 1150 err = __br_vlan_filter_toggle(br, vlan_filter); 1151 if (err) 1152 return err; 1153 } 1154 1155 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1156 if (data[IFLA_BR_VLAN_PROTOCOL]) { 1157 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); 1158 1159 err = __br_vlan_set_proto(br, vlan_proto); 1160 if (err) 1161 return err; 1162 } 1163 1164 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1165 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1166 1167 err = __br_vlan_set_default_pvid(br, defpvid, extack); 1168 if (err) 1169 return err; 1170 } 1171 1172 if (data[IFLA_BR_VLAN_STATS_ENABLED]) { 1173 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); 1174 1175 err = br_vlan_set_stats(br, vlan_stats); 1176 if (err) 1177 return err; 1178 } 1179 1180 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) { 1181 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]); 1182 1183 err = br_vlan_set_stats_per_port(br, per_port); 1184 if (err) 1185 return err; 1186 } 1187 #endif 1188 1189 if (data[IFLA_BR_GROUP_FWD_MASK]) { 1190 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); 1191 1192 if (fwd_mask & BR_GROUPFWD_RESTRICTED) 1193 return -EINVAL; 1194 br->group_fwd_mask = fwd_mask; 1195 } 1196 1197 if (data[IFLA_BR_GROUP_ADDR]) { 1198 u8 new_addr[ETH_ALEN]; 1199 1200 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) 1201 return -EINVAL; 1202 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); 1203 if (!is_link_local_ether_addr(new_addr)) 1204 return -EINVAL; 1205 if (new_addr[5] == 1 || /* 802.3x Pause address */ 1206 new_addr[5] == 2 || /* 802.3ad Slow protocols */ 1207 new_addr[5] == 3) /* 802.1X PAE address */ 1208 return -EINVAL; 1209 spin_lock_bh(&br->lock); 1210 memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); 1211 spin_unlock_bh(&br->lock); 1212 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); 1213 br_recalculate_fwd_mask(br); 1214 } 1215 1216 if (data[IFLA_BR_FDB_FLUSH]) 1217 br_fdb_flush(br); 1218 1219 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1220 if (data[IFLA_BR_MCAST_ROUTER]) { 1221 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); 1222 1223 err = br_multicast_set_router(br, multicast_router); 1224 if (err) 1225 return err; 1226 } 1227 1228 if (data[IFLA_BR_MCAST_SNOOPING]) { 1229 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); 1230 1231 br_multicast_toggle(br, mcast_snooping); 1232 } 1233 1234 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { 1235 u8 val; 1236 1237 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); 1238 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); 1239 } 1240 1241 if (data[IFLA_BR_MCAST_QUERIER]) { 1242 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); 1243 1244 err = br_multicast_set_querier(br, mcast_querier); 1245 if (err) 1246 return err; 1247 } 1248 1249 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) 1250 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n", 1251 RHT_ELASTICITY); 1252 1253 if (data[IFLA_BR_MCAST_HASH_MAX]) 1254 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); 1255 1256 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { 1257 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); 1258 1259 br->multicast_last_member_count = val; 1260 } 1261 1262 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { 1263 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); 1264 1265 br->multicast_startup_query_count = val; 1266 } 1267 1268 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { 1269 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); 1270 1271 br->multicast_last_member_interval = clock_t_to_jiffies(val); 1272 } 1273 1274 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { 1275 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); 1276 1277 br->multicast_membership_interval = clock_t_to_jiffies(val); 1278 } 1279 1280 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { 1281 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); 1282 1283 br->multicast_querier_interval = clock_t_to_jiffies(val); 1284 } 1285 1286 if (data[IFLA_BR_MCAST_QUERY_INTVL]) { 1287 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); 1288 1289 br->multicast_query_interval = clock_t_to_jiffies(val); 1290 } 1291 1292 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { 1293 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); 1294 1295 br->multicast_query_response_interval = clock_t_to_jiffies(val); 1296 } 1297 1298 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { 1299 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); 1300 1301 br->multicast_startup_query_interval = clock_t_to_jiffies(val); 1302 } 1303 1304 if (data[IFLA_BR_MCAST_STATS_ENABLED]) { 1305 __u8 mcast_stats; 1306 1307 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]); 1308 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats); 1309 } 1310 1311 if (data[IFLA_BR_MCAST_IGMP_VERSION]) { 1312 __u8 igmp_version; 1313 1314 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]); 1315 err = br_multicast_set_igmp_version(br, igmp_version); 1316 if (err) 1317 return err; 1318 } 1319 1320 #if IS_ENABLED(CONFIG_IPV6) 1321 if (data[IFLA_BR_MCAST_MLD_VERSION]) { 1322 __u8 mld_version; 1323 1324 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]); 1325 err = br_multicast_set_mld_version(br, mld_version); 1326 if (err) 1327 return err; 1328 } 1329 #endif 1330 #endif 1331 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1332 if (data[IFLA_BR_NF_CALL_IPTABLES]) { 1333 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); 1334 1335 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); 1336 } 1337 1338 if (data[IFLA_BR_NF_CALL_IP6TABLES]) { 1339 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); 1340 1341 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); 1342 } 1343 1344 if (data[IFLA_BR_NF_CALL_ARPTABLES]) { 1345 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); 1346 1347 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); 1348 } 1349 #endif 1350 1351 if (data[IFLA_BR_MULTI_BOOLOPT]) { 1352 struct br_boolopt_multi *bm; 1353 1354 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]); 1355 err = br_boolopt_multi_toggle(br, bm, extack); 1356 if (err) 1357 return err; 1358 } 1359 1360 return 0; 1361 } 1362 1363 static int br_dev_newlink(struct net *src_net, struct net_device *dev, 1364 struct nlattr *tb[], struct nlattr *data[], 1365 struct netlink_ext_ack *extack) 1366 { 1367 struct net_bridge *br = netdev_priv(dev); 1368 int err; 1369 1370 err = register_netdevice(dev); 1371 if (err) 1372 return err; 1373 1374 if (tb[IFLA_ADDRESS]) { 1375 spin_lock_bh(&br->lock); 1376 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); 1377 spin_unlock_bh(&br->lock); 1378 } 1379 1380 err = br_changelink(dev, tb, data, extack); 1381 if (err) 1382 br_dev_delete(dev, NULL); 1383 1384 return err; 1385 } 1386 1387 static size_t br_get_size(const struct net_device *brdev) 1388 { 1389 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ 1390 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ 1391 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ 1392 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ 1393 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ 1394 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ 1395 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ 1396 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1397 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ 1398 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ 1399 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ 1400 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */ 1401 #endif 1402 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ 1403 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ 1404 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ 1405 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ 1406 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ 1407 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ 1408 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ 1409 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ 1410 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ 1411 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ 1412 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ 1413 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ 1414 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1415 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ 1416 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ 1417 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ 1418 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ 1419 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */ 1420 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ 1421 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ 1422 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ 1423 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ 1424 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ 1425 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ 1426 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ 1427 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ 1428 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ 1429 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ 1430 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */ 1431 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */ 1432 #endif 1433 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1434 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ 1435 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ 1436 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ 1437 #endif 1438 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */ 1439 0; 1440 } 1441 1442 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) 1443 { 1444 struct net_bridge *br = netdev_priv(brdev); 1445 u32 forward_delay = jiffies_to_clock_t(br->forward_delay); 1446 u32 hello_time = jiffies_to_clock_t(br->hello_time); 1447 u32 age_time = jiffies_to_clock_t(br->max_age); 1448 u32 ageing_time = jiffies_to_clock_t(br->ageing_time); 1449 u32 stp_enabled = br->stp_enabled; 1450 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; 1451 u8 vlan_enabled = br_vlan_enabled(br->dev); 1452 struct br_boolopt_multi bm; 1453 u64 clockval; 1454 1455 clockval = br_timer_value(&br->hello_timer); 1456 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) 1457 return -EMSGSIZE; 1458 clockval = br_timer_value(&br->tcn_timer); 1459 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) 1460 return -EMSGSIZE; 1461 clockval = br_timer_value(&br->topology_change_timer); 1462 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, 1463 IFLA_BR_PAD)) 1464 return -EMSGSIZE; 1465 clockval = br_timer_value(&br->gc_work.timer); 1466 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) 1467 return -EMSGSIZE; 1468 1469 br_boolopt_multi_get(br, &bm); 1470 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || 1471 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || 1472 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || 1473 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || 1474 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || 1475 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || 1476 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || 1477 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || 1478 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), 1479 &br->bridge_id) || 1480 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), 1481 &br->designated_root) || 1482 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || 1483 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || 1484 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || 1485 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, 1486 br->topology_change_detected) || 1487 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) || 1488 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm)) 1489 return -EMSGSIZE; 1490 1491 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1492 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || 1493 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || 1494 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, 1495 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) || 1496 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT, 1497 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT))) 1498 return -EMSGSIZE; 1499 #endif 1500 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1501 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || 1502 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, 1503 br_opt_get(br, BROPT_MULTICAST_ENABLED)) || 1504 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, 1505 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) || 1506 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, 1507 br_opt_get(br, BROPT_MULTICAST_QUERIER)) || 1508 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED, 1509 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) || 1510 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) || 1511 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || 1512 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, 1513 br->multicast_last_member_count) || 1514 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, 1515 br->multicast_startup_query_count) || 1516 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION, 1517 br->multicast_igmp_version)) 1518 return -EMSGSIZE; 1519 #if IS_ENABLED(CONFIG_IPV6) 1520 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION, 1521 br->multicast_mld_version)) 1522 return -EMSGSIZE; 1523 #endif 1524 clockval = jiffies_to_clock_t(br->multicast_last_member_interval); 1525 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, 1526 IFLA_BR_PAD)) 1527 return -EMSGSIZE; 1528 clockval = jiffies_to_clock_t(br->multicast_membership_interval); 1529 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, 1530 IFLA_BR_PAD)) 1531 return -EMSGSIZE; 1532 clockval = jiffies_to_clock_t(br->multicast_querier_interval); 1533 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, 1534 IFLA_BR_PAD)) 1535 return -EMSGSIZE; 1536 clockval = jiffies_to_clock_t(br->multicast_query_interval); 1537 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, 1538 IFLA_BR_PAD)) 1539 return -EMSGSIZE; 1540 clockval = jiffies_to_clock_t(br->multicast_query_response_interval); 1541 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, 1542 IFLA_BR_PAD)) 1543 return -EMSGSIZE; 1544 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); 1545 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, 1546 IFLA_BR_PAD)) 1547 return -EMSGSIZE; 1548 #endif 1549 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1550 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, 1551 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) || 1552 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, 1553 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) || 1554 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, 1555 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0)) 1556 return -EMSGSIZE; 1557 #endif 1558 1559 return 0; 1560 } 1561 1562 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr) 1563 { 1564 struct net_bridge_port *p = NULL; 1565 struct net_bridge_vlan_group *vg; 1566 struct net_bridge_vlan *v; 1567 struct net_bridge *br; 1568 int numvls = 0; 1569 1570 switch (attr) { 1571 case IFLA_STATS_LINK_XSTATS: 1572 br = netdev_priv(dev); 1573 vg = br_vlan_group(br); 1574 break; 1575 case IFLA_STATS_LINK_XSTATS_SLAVE: 1576 p = br_port_get_rtnl(dev); 1577 if (!p) 1578 return 0; 1579 br = p->br; 1580 vg = nbp_vlan_group(p); 1581 break; 1582 default: 1583 return 0; 1584 } 1585 1586 if (vg) { 1587 /* we need to count all, even placeholder entries */ 1588 list_for_each_entry(v, &vg->vlan_list, vlist) 1589 numvls++; 1590 } 1591 1592 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + 1593 nla_total_size(sizeof(struct br_mcast_stats)) + 1594 nla_total_size(0); 1595 } 1596 1597 static int br_fill_linkxstats(struct sk_buff *skb, 1598 const struct net_device *dev, 1599 int *prividx, int attr) 1600 { 1601 struct nlattr *nla __maybe_unused; 1602 struct net_bridge_port *p = NULL; 1603 struct net_bridge_vlan_group *vg; 1604 struct net_bridge_vlan *v; 1605 struct net_bridge *br; 1606 struct nlattr *nest; 1607 int vl_idx = 0; 1608 1609 switch (attr) { 1610 case IFLA_STATS_LINK_XSTATS: 1611 br = netdev_priv(dev); 1612 vg = br_vlan_group(br); 1613 break; 1614 case IFLA_STATS_LINK_XSTATS_SLAVE: 1615 p = br_port_get_rtnl(dev); 1616 if (!p) 1617 return 0; 1618 br = p->br; 1619 vg = nbp_vlan_group(p); 1620 break; 1621 default: 1622 return -EINVAL; 1623 } 1624 1625 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE); 1626 if (!nest) 1627 return -EMSGSIZE; 1628 1629 if (vg) { 1630 u16 pvid; 1631 1632 pvid = br_get_pvid(vg); 1633 list_for_each_entry(v, &vg->vlan_list, vlist) { 1634 struct bridge_vlan_xstats vxi; 1635 struct br_vlan_stats stats; 1636 1637 if (++vl_idx < *prividx) 1638 continue; 1639 memset(&vxi, 0, sizeof(vxi)); 1640 vxi.vid = v->vid; 1641 vxi.flags = v->flags; 1642 if (v->vid == pvid) 1643 vxi.flags |= BRIDGE_VLAN_INFO_PVID; 1644 br_vlan_get_stats(v, &stats); 1645 vxi.rx_bytes = stats.rx_bytes; 1646 vxi.rx_packets = stats.rx_packets; 1647 vxi.tx_bytes = stats.tx_bytes; 1648 vxi.tx_packets = stats.tx_packets; 1649 1650 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) 1651 goto nla_put_failure; 1652 } 1653 } 1654 1655 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1656 if (++vl_idx >= *prividx) { 1657 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST, 1658 sizeof(struct br_mcast_stats), 1659 BRIDGE_XSTATS_PAD); 1660 if (!nla) 1661 goto nla_put_failure; 1662 br_multicast_get_stats(br, p, nla_data(nla)); 1663 } 1664 #endif 1665 1666 if (p) { 1667 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP, 1668 sizeof(p->stp_xstats), 1669 BRIDGE_XSTATS_PAD); 1670 if (!nla) 1671 goto nla_put_failure; 1672 1673 spin_lock_bh(&br->lock); 1674 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats)); 1675 spin_unlock_bh(&br->lock); 1676 } 1677 1678 nla_nest_end(skb, nest); 1679 *prividx = 0; 1680 1681 return 0; 1682 1683 nla_put_failure: 1684 nla_nest_end(skb, nest); 1685 *prividx = vl_idx; 1686 1687 return -EMSGSIZE; 1688 } 1689 1690 static struct rtnl_af_ops br_af_ops __read_mostly = { 1691 .family = AF_BRIDGE, 1692 .get_link_af_size = br_get_link_af_size_filtered, 1693 }; 1694 1695 struct rtnl_link_ops br_link_ops __read_mostly = { 1696 .kind = "bridge", 1697 .priv_size = sizeof(struct net_bridge), 1698 .setup = br_dev_setup, 1699 .maxtype = IFLA_BR_MAX, 1700 .policy = br_policy, 1701 .validate = br_validate, 1702 .newlink = br_dev_newlink, 1703 .changelink = br_changelink, 1704 .dellink = br_dev_delete, 1705 .get_size = br_get_size, 1706 .fill_info = br_fill_info, 1707 .fill_linkxstats = br_fill_linkxstats, 1708 .get_linkxstats_size = br_get_linkxstats_size, 1709 1710 .slave_maxtype = IFLA_BRPORT_MAX, 1711 .slave_policy = br_port_policy, 1712 .slave_changelink = br_port_slave_changelink, 1713 .get_slave_size = br_port_get_slave_size, 1714 .fill_slave_info = br_port_fill_slave_info, 1715 }; 1716 1717 int __init br_netlink_init(void) 1718 { 1719 int err; 1720 1721 br_mdb_init(); 1722 br_vlan_rtnl_init(); 1723 rtnl_af_register(&br_af_ops); 1724 1725 err = rtnl_link_register(&br_link_ops); 1726 if (err) 1727 goto out_af; 1728 1729 return 0; 1730 1731 out_af: 1732 rtnl_af_unregister(&br_af_ops); 1733 br_mdb_uninit(); 1734 return err; 1735 } 1736 1737 void br_netlink_fini(void) 1738 { 1739 br_mdb_uninit(); 1740 br_vlan_rtnl_uninit(); 1741 rtnl_af_unregister(&br_af_ops); 1742 rtnl_link_unregister(&br_link_ops); 1743 } 1744