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 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_IN_OPEN */ 156 + 0; 157 } 158 159 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) 160 { 161 return NLMSG_ALIGN(sizeof(struct ifinfomsg)) 162 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ 163 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ 164 + nla_total_size(4) /* IFLA_MASTER */ 165 + nla_total_size(4) /* IFLA_MTU */ 166 + nla_total_size(4) /* IFLA_LINK */ 167 + nla_total_size(1) /* IFLA_OPERSTATE */ 168 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ 169 + nla_total_size(br_get_link_af_size_filtered(dev, 170 filter_mask)) /* IFLA_AF_SPEC */ 171 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */ 172 } 173 174 static int br_port_fill_attrs(struct sk_buff *skb, 175 const struct net_bridge_port *p) 176 { 177 u8 mode = !!(p->flags & BR_HAIRPIN_MODE); 178 struct net_bridge_port *backup_p; 179 u64 timerval; 180 181 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || 182 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || 183 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || 184 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || 185 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || 186 nla_put_u8(skb, IFLA_BRPORT_PROTECT, 187 !!(p->flags & BR_ROOT_BLOCK)) || 188 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, 189 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || 190 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST, 191 !!(p->flags & BR_MULTICAST_TO_UNICAST)) || 192 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || 193 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, 194 !!(p->flags & BR_FLOOD)) || 195 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD, 196 !!(p->flags & BR_MCAST_FLOOD)) || 197 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD, 198 !!(p->flags & BR_BCAST_FLOOD)) || 199 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || 200 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, 201 !!(p->flags & BR_PROXYARP_WIFI)) || 202 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id), 203 &p->designated_root) || 204 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id), 205 &p->designated_bridge) || 206 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) || 207 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) || 208 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) || 209 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) || 210 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, 211 p->topology_change_ack) || 212 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) || 213 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags & 214 BR_VLAN_TUNNEL)) || 215 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) || 216 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS, 217 !!(p->flags & BR_NEIGH_SUPPRESS)) || 218 nla_put_u8(skb, IFLA_BRPORT_MRP_RING_OPEN, !!(p->flags & 219 BR_MRP_LOST_CONT)) || 220 nla_put_u8(skb, IFLA_BRPORT_MRP_IN_OPEN, 221 !!(p->flags & BR_MRP_LOST_IN_CONT)) || 222 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED))) 223 return -EMSGSIZE; 224 225 timerval = br_timer_value(&p->message_age_timer); 226 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval, 227 IFLA_BRPORT_PAD)) 228 return -EMSGSIZE; 229 timerval = br_timer_value(&p->forward_delay_timer); 230 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval, 231 IFLA_BRPORT_PAD)) 232 return -EMSGSIZE; 233 timerval = br_timer_value(&p->hold_timer); 234 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval, 235 IFLA_BRPORT_PAD)) 236 return -EMSGSIZE; 237 238 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 239 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER, 240 p->multicast_router)) 241 return -EMSGSIZE; 242 #endif 243 244 /* we might be called only with br->lock */ 245 rcu_read_lock(); 246 backup_p = rcu_dereference(p->backup_port); 247 if (backup_p) 248 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT, 249 backup_p->dev->ifindex); 250 rcu_read_unlock(); 251 252 return 0; 253 } 254 255 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, 256 u16 vid_end, u16 flags) 257 { 258 struct bridge_vlan_info vinfo; 259 260 if ((vid_end - vid_start) > 0) { 261 /* add range to skb */ 262 vinfo.vid = vid_start; 263 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; 264 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 265 sizeof(vinfo), &vinfo)) 266 goto nla_put_failure; 267 268 vinfo.vid = vid_end; 269 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; 270 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 271 sizeof(vinfo), &vinfo)) 272 goto nla_put_failure; 273 } else { 274 vinfo.vid = vid_start; 275 vinfo.flags = flags; 276 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 277 sizeof(vinfo), &vinfo)) 278 goto nla_put_failure; 279 } 280 281 return 0; 282 283 nla_put_failure: 284 return -EMSGSIZE; 285 } 286 287 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, 288 struct net_bridge_vlan_group *vg) 289 { 290 struct net_bridge_vlan *v; 291 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; 292 u16 flags, pvid; 293 int err = 0; 294 295 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan 296 * and mark vlan info with begin and end flags 297 * if vlaninfo represents a range 298 */ 299 pvid = br_get_pvid(vg); 300 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 301 flags = 0; 302 if (!br_vlan_should_use(v)) 303 continue; 304 if (v->vid == pvid) 305 flags |= BRIDGE_VLAN_INFO_PVID; 306 307 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 308 flags |= BRIDGE_VLAN_INFO_UNTAGGED; 309 310 if (vid_range_start == 0) { 311 goto initvars; 312 } else if ((v->vid - vid_range_end) == 1 && 313 flags == vid_range_flags) { 314 vid_range_end = v->vid; 315 continue; 316 } else { 317 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 318 vid_range_end, 319 vid_range_flags); 320 if (err) 321 return err; 322 } 323 324 initvars: 325 vid_range_start = v->vid; 326 vid_range_end = v->vid; 327 vid_range_flags = flags; 328 } 329 330 if (vid_range_start != 0) { 331 /* Call it once more to send any left over vlans */ 332 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 333 vid_range_end, 334 vid_range_flags); 335 if (err) 336 return err; 337 } 338 339 return 0; 340 } 341 342 static int br_fill_ifvlaninfo(struct sk_buff *skb, 343 struct net_bridge_vlan_group *vg) 344 { 345 struct bridge_vlan_info vinfo; 346 struct net_bridge_vlan *v; 347 u16 pvid; 348 349 pvid = br_get_pvid(vg); 350 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 351 if (!br_vlan_should_use(v)) 352 continue; 353 354 vinfo.vid = v->vid; 355 vinfo.flags = 0; 356 if (v->vid == pvid) 357 vinfo.flags |= BRIDGE_VLAN_INFO_PVID; 358 359 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 360 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; 361 362 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 363 sizeof(vinfo), &vinfo)) 364 goto nla_put_failure; 365 } 366 367 return 0; 368 369 nla_put_failure: 370 return -EMSGSIZE; 371 } 372 373 /* 374 * Create one netlink message for one interface 375 * Contains port and master info as well as carrier and bridge state. 376 */ 377 static int br_fill_ifinfo(struct sk_buff *skb, 378 const struct net_bridge_port *port, 379 u32 pid, u32 seq, int event, unsigned int flags, 380 u32 filter_mask, const struct net_device *dev) 381 { 382 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; 383 struct net_bridge *br; 384 struct ifinfomsg *hdr; 385 struct nlmsghdr *nlh; 386 387 if (port) 388 br = port->br; 389 else 390 br = netdev_priv(dev); 391 392 br_debug(br, "br_fill_info event %d port %s master %s\n", 393 event, dev->name, br->dev->name); 394 395 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); 396 if (nlh == NULL) 397 return -EMSGSIZE; 398 399 hdr = nlmsg_data(nlh); 400 hdr->ifi_family = AF_BRIDGE; 401 hdr->__ifi_pad = 0; 402 hdr->ifi_type = dev->type; 403 hdr->ifi_index = dev->ifindex; 404 hdr->ifi_flags = dev_get_flags(dev); 405 hdr->ifi_change = 0; 406 407 if (nla_put_string(skb, IFLA_IFNAME, dev->name) || 408 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || 409 nla_put_u32(skb, IFLA_MTU, dev->mtu) || 410 nla_put_u8(skb, IFLA_OPERSTATE, operstate) || 411 (dev->addr_len && 412 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || 413 (dev->ifindex != dev_get_iflink(dev) && 414 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) 415 goto nla_put_failure; 416 417 if (event == RTM_NEWLINK && port) { 418 struct nlattr *nest; 419 420 nest = nla_nest_start(skb, IFLA_PROTINFO); 421 if (nest == NULL || br_port_fill_attrs(skb, port) < 0) 422 goto nla_put_failure; 423 nla_nest_end(skb, nest); 424 } 425 426 /* Check if the VID information is requested */ 427 if ((filter_mask & RTEXT_FILTER_BRVLAN) || 428 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { 429 struct net_bridge_vlan_group *vg; 430 struct nlattr *af; 431 int err; 432 433 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */ 434 rcu_read_lock(); 435 if (port) 436 vg = nbp_vlan_group_rcu(port); 437 else 438 vg = br_vlan_group_rcu(br); 439 440 if (!vg || !vg->num_vlans) { 441 rcu_read_unlock(); 442 goto done; 443 } 444 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC); 445 if (!af) { 446 rcu_read_unlock(); 447 goto nla_put_failure; 448 } 449 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) 450 err = br_fill_ifvlaninfo_compressed(skb, vg); 451 else 452 err = br_fill_ifvlaninfo(skb, vg); 453 454 if (port && (port->flags & BR_VLAN_TUNNEL)) 455 err = br_fill_vlan_tunnel_info(skb, vg); 456 rcu_read_unlock(); 457 if (err) 458 goto nla_put_failure; 459 460 nla_nest_end(skb, af); 461 } 462 463 if (filter_mask & RTEXT_FILTER_MRP) { 464 struct nlattr *af; 465 int err; 466 467 if (!br_mrp_enabled(br) || port) 468 goto done; 469 470 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC); 471 if (!af) 472 goto nla_put_failure; 473 474 rcu_read_lock(); 475 err = br_mrp_fill_info(skb, br); 476 rcu_read_unlock(); 477 478 if (err) 479 goto nla_put_failure; 480 481 nla_nest_end(skb, af); 482 } 483 484 done: 485 nlmsg_end(skb, nlh); 486 return 0; 487 488 nla_put_failure: 489 nlmsg_cancel(skb, nlh); 490 return -EMSGSIZE; 491 } 492 493 /* Notify listeners of a change in bridge or port information */ 494 void br_ifinfo_notify(int event, const struct net_bridge *br, 495 const struct net_bridge_port *port) 496 { 497 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; 498 struct net_device *dev; 499 struct sk_buff *skb; 500 int err = -ENOBUFS; 501 struct net *net; 502 u16 port_no = 0; 503 504 if (WARN_ON(!port && !br)) 505 return; 506 507 if (port) { 508 dev = port->dev; 509 br = port->br; 510 port_no = port->port_no; 511 } else { 512 dev = br->dev; 513 } 514 515 net = dev_net(dev); 516 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event); 517 518 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC); 519 if (skb == NULL) 520 goto errout; 521 522 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev); 523 if (err < 0) { 524 /* -EMSGSIZE implies BUG in br_nlmsg_size() */ 525 WARN_ON(err == -EMSGSIZE); 526 kfree_skb(skb); 527 goto errout; 528 } 529 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); 530 return; 531 errout: 532 rtnl_set_sk_err(net, RTNLGRP_LINK, err); 533 } 534 535 /* 536 * Dump information about all ports, in response to GETLINK 537 */ 538 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, 539 struct net_device *dev, u32 filter_mask, int nlflags) 540 { 541 struct net_bridge_port *port = br_port_get_rtnl(dev); 542 543 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && 544 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) && 545 !(filter_mask & RTEXT_FILTER_MRP)) 546 return 0; 547 548 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, 549 filter_mask, dev); 550 } 551 552 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, 553 int cmd, struct bridge_vlan_info *vinfo, bool *changed, 554 struct netlink_ext_ack *extack) 555 { 556 bool curr_change; 557 int err = 0; 558 559 switch (cmd) { 560 case RTM_SETLINK: 561 if (p) { 562 /* if the MASTER flag is set this will act on the global 563 * per-VLAN entry as well 564 */ 565 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags, 566 &curr_change, extack); 567 } else { 568 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; 569 err = br_vlan_add(br, vinfo->vid, vinfo->flags, 570 &curr_change, extack); 571 } 572 if (curr_change) 573 *changed = true; 574 break; 575 576 case RTM_DELLINK: 577 if (p) { 578 if (!nbp_vlan_delete(p, vinfo->vid)) 579 *changed = true; 580 581 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) && 582 !br_vlan_delete(p->br, vinfo->vid)) 583 *changed = true; 584 } else if (!br_vlan_delete(br, vinfo->vid)) { 585 *changed = true; 586 } 587 break; 588 } 589 590 return err; 591 } 592 593 int br_process_vlan_info(struct net_bridge *br, 594 struct net_bridge_port *p, int cmd, 595 struct bridge_vlan_info *vinfo_curr, 596 struct bridge_vlan_info **vinfo_last, 597 bool *changed, 598 struct netlink_ext_ack *extack) 599 { 600 int err, rtm_cmd; 601 602 if (!br_vlan_valid_id(vinfo_curr->vid, extack)) 603 return -EINVAL; 604 605 /* needed for vlan-only NEWVLAN/DELVLAN notifications */ 606 rtm_cmd = br_afspec_cmd_to_rtm(cmd); 607 608 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 609 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) 610 return -EINVAL; 611 *vinfo_last = vinfo_curr; 612 return 0; 613 } 614 615 if (*vinfo_last) { 616 struct bridge_vlan_info tmp_vinfo; 617 int v, v_change_start = 0; 618 619 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) 620 return -EINVAL; 621 622 memcpy(&tmp_vinfo, *vinfo_last, 623 sizeof(struct bridge_vlan_info)); 624 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) { 625 bool curr_change = false; 626 627 tmp_vinfo.vid = v; 628 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change, 629 extack); 630 if (err) 631 break; 632 if (curr_change) { 633 *changed = curr_change; 634 if (!v_change_start) 635 v_change_start = v; 636 } else { 637 /* nothing to notify yet */ 638 if (!v_change_start) 639 continue; 640 br_vlan_notify(br, p, v_change_start, 641 v - 1, rtm_cmd); 642 v_change_start = 0; 643 } 644 cond_resched(); 645 } 646 /* v_change_start is set only if the last/whole range changed */ 647 if (v_change_start) 648 br_vlan_notify(br, p, v_change_start, 649 v - 1, rtm_cmd); 650 651 *vinfo_last = NULL; 652 653 return err; 654 } 655 656 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack); 657 if (*changed) 658 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd); 659 660 return err; 661 } 662 663 static int br_afspec(struct net_bridge *br, 664 struct net_bridge_port *p, 665 struct nlattr *af_spec, 666 int cmd, bool *changed, 667 struct netlink_ext_ack *extack) 668 { 669 struct bridge_vlan_info *vinfo_curr = NULL; 670 struct bridge_vlan_info *vinfo_last = NULL; 671 struct nlattr *attr; 672 struct vtunnel_info tinfo_last = {}; 673 struct vtunnel_info tinfo_curr = {}; 674 int err = 0, rem; 675 676 nla_for_each_nested(attr, af_spec, rem) { 677 err = 0; 678 switch (nla_type(attr)) { 679 case IFLA_BRIDGE_VLAN_TUNNEL_INFO: 680 if (!p || !(p->flags & BR_VLAN_TUNNEL)) 681 return -EINVAL; 682 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr); 683 if (err) 684 return err; 685 err = br_process_vlan_tunnel_info(br, p, cmd, 686 &tinfo_curr, 687 &tinfo_last, 688 changed); 689 if (err) 690 return err; 691 break; 692 case IFLA_BRIDGE_VLAN_INFO: 693 if (nla_len(attr) != sizeof(struct bridge_vlan_info)) 694 return -EINVAL; 695 vinfo_curr = nla_data(attr); 696 err = br_process_vlan_info(br, p, cmd, vinfo_curr, 697 &vinfo_last, changed, 698 extack); 699 if (err) 700 return err; 701 break; 702 case IFLA_BRIDGE_MRP: 703 err = br_mrp_parse(br, p, attr, cmd, extack); 704 if (err) 705 return err; 706 break; 707 } 708 } 709 710 return err; 711 } 712 713 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { 714 [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, 715 [IFLA_BRPORT_COST] = { .type = NLA_U32 }, 716 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, 717 [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, 718 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, 719 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, 720 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, 721 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, 722 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, 723 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, 724 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, 725 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, 726 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 }, 727 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 }, 728 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 }, 729 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 }, 730 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 }, 731 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 }, 732 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 }, 733 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 }, 734 }; 735 736 /* Change the state of the port and notify spanning tree */ 737 static int br_set_port_state(struct net_bridge_port *p, u8 state) 738 { 739 if (state > BR_STATE_BLOCKING) 740 return -EINVAL; 741 742 /* if kernel STP is running, don't allow changes */ 743 if (p->br->stp_enabled == BR_KERNEL_STP) 744 return -EBUSY; 745 746 /* if device is not up, change is not allowed 747 * if link is not present, only allowable state is disabled 748 */ 749 if (!netif_running(p->dev) || 750 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) 751 return -ENETDOWN; 752 753 br_set_state(p, state); 754 br_port_state_selection(p->br); 755 return 0; 756 } 757 758 /* Set/clear or port flags based on attribute */ 759 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], 760 int attrtype, unsigned long mask) 761 { 762 unsigned long flags; 763 int err; 764 765 if (!tb[attrtype]) 766 return 0; 767 768 if (nla_get_u8(tb[attrtype])) 769 flags = p->flags | mask; 770 else 771 flags = p->flags & ~mask; 772 773 err = br_switchdev_set_port_flag(p, flags, mask); 774 if (err) 775 return err; 776 777 p->flags = flags; 778 return 0; 779 } 780 781 /* Process bridge protocol info on port */ 782 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) 783 { 784 unsigned long old_flags = p->flags; 785 bool br_vlan_tunnel_old = false; 786 int err; 787 788 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); 789 if (err) 790 return err; 791 792 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); 793 if (err) 794 return err; 795 796 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); 797 if (err) 798 return err; 799 800 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); 801 if (err) 802 return err; 803 804 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); 805 if (err) 806 return err; 807 808 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); 809 if (err) 810 return err; 811 812 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); 813 if (err) 814 return err; 815 816 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); 817 if (err) 818 return err; 819 820 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); 821 if (err) 822 return err; 823 824 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); 825 if (err) 826 return err; 827 828 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); 829 if (err) 830 return err; 831 832 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; 833 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); 834 if (err) 835 return err; 836 837 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) 838 nbp_vlan_tunnel_info_flush(p); 839 840 if (tb[IFLA_BRPORT_COST]) { 841 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); 842 if (err) 843 return err; 844 } 845 846 if (tb[IFLA_BRPORT_PRIORITY]) { 847 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); 848 if (err) 849 return err; 850 } 851 852 if (tb[IFLA_BRPORT_STATE]) { 853 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); 854 if (err) 855 return err; 856 } 857 858 if (tb[IFLA_BRPORT_FLUSH]) 859 br_fdb_delete_by_port(p->br, p, 0, 0); 860 861 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 862 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { 863 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); 864 865 err = br_multicast_set_port_router(p, mcast_router); 866 if (err) 867 return err; 868 } 869 #endif 870 871 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) { 872 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]); 873 874 if (fwd_mask & BR_GROUPFWD_MACPAUSE) 875 return -EINVAL; 876 p->group_fwd_mask = fwd_mask; 877 } 878 879 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, 880 BR_NEIGH_SUPPRESS); 881 if (err) 882 return err; 883 884 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); 885 if (err) 886 return err; 887 888 if (tb[IFLA_BRPORT_BACKUP_PORT]) { 889 struct net_device *backup_dev = NULL; 890 u32 backup_ifindex; 891 892 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]); 893 if (backup_ifindex) { 894 backup_dev = __dev_get_by_index(dev_net(p->dev), 895 backup_ifindex); 896 if (!backup_dev) 897 return -ENOENT; 898 } 899 900 err = nbp_backup_change(p, backup_dev); 901 if (err) 902 return err; 903 } 904 905 br_port_flags_change(p, old_flags ^ p->flags); 906 return 0; 907 } 908 909 /* Change state and parameters on port. */ 910 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, 911 struct netlink_ext_ack *extack) 912 { 913 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 914 struct nlattr *tb[IFLA_BRPORT_MAX + 1]; 915 struct net_bridge_port *p; 916 struct nlattr *protinfo; 917 struct nlattr *afspec; 918 bool changed = false; 919 int err = 0; 920 921 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); 922 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 923 if (!protinfo && !afspec) 924 return 0; 925 926 p = br_port_get_rtnl(dev); 927 /* We want to accept dev as bridge itself if the AF_SPEC 928 * is set to see if someone is setting vlan info on the bridge 929 */ 930 if (!p && !afspec) 931 return -EINVAL; 932 933 if (p && protinfo) { 934 if (protinfo->nla_type & NLA_F_NESTED) { 935 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX, 936 protinfo, 937 br_port_policy, 938 NULL); 939 if (err) 940 return err; 941 942 spin_lock_bh(&p->br->lock); 943 err = br_setport(p, tb); 944 spin_unlock_bh(&p->br->lock); 945 } else { 946 /* Binary compatibility with old RSTP */ 947 if (nla_len(protinfo) < sizeof(u8)) 948 return -EINVAL; 949 950 spin_lock_bh(&p->br->lock); 951 err = br_set_port_state(p, nla_get_u8(protinfo)); 952 spin_unlock_bh(&p->br->lock); 953 } 954 if (err) 955 goto out; 956 changed = true; 957 } 958 959 if (afspec) 960 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack); 961 962 if (changed) 963 br_ifinfo_notify(RTM_NEWLINK, br, p); 964 out: 965 return err; 966 } 967 968 /* Delete port information */ 969 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) 970 { 971 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 972 struct net_bridge_port *p; 973 struct nlattr *afspec; 974 bool changed = false; 975 int err = 0; 976 977 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 978 if (!afspec) 979 return 0; 980 981 p = br_port_get_rtnl(dev); 982 /* We want to accept dev as bridge itself as well */ 983 if (!p && !(dev->priv_flags & IFF_EBRIDGE)) 984 return -EINVAL; 985 986 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL); 987 if (changed) 988 /* Send RTM_NEWLINK because userspace 989 * expects RTM_NEWLINK for vlan dels 990 */ 991 br_ifinfo_notify(RTM_NEWLINK, br, p); 992 993 return err; 994 } 995 996 static int br_validate(struct nlattr *tb[], struct nlattr *data[], 997 struct netlink_ext_ack *extack) 998 { 999 if (tb[IFLA_ADDRESS]) { 1000 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 1001 return -EINVAL; 1002 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 1003 return -EADDRNOTAVAIL; 1004 } 1005 1006 if (!data) 1007 return 0; 1008 1009 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1010 if (data[IFLA_BR_VLAN_PROTOCOL]) { 1011 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) { 1012 case htons(ETH_P_8021Q): 1013 case htons(ETH_P_8021AD): 1014 break; 1015 default: 1016 return -EPROTONOSUPPORT; 1017 } 1018 } 1019 1020 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1021 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1022 1023 if (defpvid >= VLAN_VID_MASK) 1024 return -EINVAL; 1025 } 1026 #endif 1027 1028 return 0; 1029 } 1030 1031 static int br_port_slave_changelink(struct net_device *brdev, 1032 struct net_device *dev, 1033 struct nlattr *tb[], 1034 struct nlattr *data[], 1035 struct netlink_ext_ack *extack) 1036 { 1037 struct net_bridge *br = netdev_priv(brdev); 1038 int ret; 1039 1040 if (!data) 1041 return 0; 1042 1043 spin_lock_bh(&br->lock); 1044 ret = br_setport(br_port_get_rtnl(dev), data); 1045 spin_unlock_bh(&br->lock); 1046 1047 return ret; 1048 } 1049 1050 static int br_port_fill_slave_info(struct sk_buff *skb, 1051 const struct net_device *brdev, 1052 const struct net_device *dev) 1053 { 1054 return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); 1055 } 1056 1057 static size_t br_port_get_slave_size(const struct net_device *brdev, 1058 const struct net_device *dev) 1059 { 1060 return br_port_info_size(); 1061 } 1062 1063 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { 1064 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, 1065 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, 1066 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, 1067 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, 1068 [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, 1069 [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, 1070 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, 1071 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, 1072 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, 1073 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, 1074 .len = ETH_ALEN }, 1075 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, 1076 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, 1077 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, 1078 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, 1079 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, 1080 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, 1081 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 1082 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 1083 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 1084 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 1085 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 1086 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 1087 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 1088 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 1089 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, 1090 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, 1091 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, 1092 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, 1093 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, 1094 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 }, 1095 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, 1096 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 }, 1097 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 }, 1098 [IFLA_BR_MULTI_BOOLOPT] = 1099 NLA_POLICY_EXACT_LEN(sizeof(struct br_boolopt_multi)), 1100 }; 1101 1102 static int br_changelink(struct net_device *brdev, struct nlattr *tb[], 1103 struct nlattr *data[], 1104 struct netlink_ext_ack *extack) 1105 { 1106 struct net_bridge *br = netdev_priv(brdev); 1107 int err; 1108 1109 if (!data) 1110 return 0; 1111 1112 if (data[IFLA_BR_FORWARD_DELAY]) { 1113 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); 1114 if (err) 1115 return err; 1116 } 1117 1118 if (data[IFLA_BR_HELLO_TIME]) { 1119 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); 1120 if (err) 1121 return err; 1122 } 1123 1124 if (data[IFLA_BR_MAX_AGE]) { 1125 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); 1126 if (err) 1127 return err; 1128 } 1129 1130 if (data[IFLA_BR_AGEING_TIME]) { 1131 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); 1132 if (err) 1133 return err; 1134 } 1135 1136 if (data[IFLA_BR_STP_STATE]) { 1137 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); 1138 1139 err = br_stp_set_enabled(br, stp_enabled, extack); 1140 if (err) 1141 return err; 1142 } 1143 1144 if (data[IFLA_BR_PRIORITY]) { 1145 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); 1146 1147 br_stp_set_bridge_priority(br, priority); 1148 } 1149 1150 if (data[IFLA_BR_VLAN_FILTERING]) { 1151 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); 1152 1153 err = __br_vlan_filter_toggle(br, vlan_filter); 1154 if (err) 1155 return err; 1156 } 1157 1158 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1159 if (data[IFLA_BR_VLAN_PROTOCOL]) { 1160 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); 1161 1162 err = __br_vlan_set_proto(br, vlan_proto); 1163 if (err) 1164 return err; 1165 } 1166 1167 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1168 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1169 1170 err = __br_vlan_set_default_pvid(br, defpvid, extack); 1171 if (err) 1172 return err; 1173 } 1174 1175 if (data[IFLA_BR_VLAN_STATS_ENABLED]) { 1176 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); 1177 1178 err = br_vlan_set_stats(br, vlan_stats); 1179 if (err) 1180 return err; 1181 } 1182 1183 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) { 1184 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]); 1185 1186 err = br_vlan_set_stats_per_port(br, per_port); 1187 if (err) 1188 return err; 1189 } 1190 #endif 1191 1192 if (data[IFLA_BR_GROUP_FWD_MASK]) { 1193 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); 1194 1195 if (fwd_mask & BR_GROUPFWD_RESTRICTED) 1196 return -EINVAL; 1197 br->group_fwd_mask = fwd_mask; 1198 } 1199 1200 if (data[IFLA_BR_GROUP_ADDR]) { 1201 u8 new_addr[ETH_ALEN]; 1202 1203 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) 1204 return -EINVAL; 1205 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); 1206 if (!is_link_local_ether_addr(new_addr)) 1207 return -EINVAL; 1208 if (new_addr[5] == 1 || /* 802.3x Pause address */ 1209 new_addr[5] == 2 || /* 802.3ad Slow protocols */ 1210 new_addr[5] == 3) /* 802.1X PAE address */ 1211 return -EINVAL; 1212 spin_lock_bh(&br->lock); 1213 memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); 1214 spin_unlock_bh(&br->lock); 1215 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); 1216 br_recalculate_fwd_mask(br); 1217 } 1218 1219 if (data[IFLA_BR_FDB_FLUSH]) 1220 br_fdb_flush(br); 1221 1222 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1223 if (data[IFLA_BR_MCAST_ROUTER]) { 1224 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); 1225 1226 err = br_multicast_set_router(br, multicast_router); 1227 if (err) 1228 return err; 1229 } 1230 1231 if (data[IFLA_BR_MCAST_SNOOPING]) { 1232 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); 1233 1234 br_multicast_toggle(br, mcast_snooping); 1235 } 1236 1237 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { 1238 u8 val; 1239 1240 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); 1241 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); 1242 } 1243 1244 if (data[IFLA_BR_MCAST_QUERIER]) { 1245 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); 1246 1247 err = br_multicast_set_querier(br, mcast_querier); 1248 if (err) 1249 return err; 1250 } 1251 1252 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) 1253 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n", 1254 RHT_ELASTICITY); 1255 1256 if (data[IFLA_BR_MCAST_HASH_MAX]) 1257 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); 1258 1259 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { 1260 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); 1261 1262 br->multicast_last_member_count = val; 1263 } 1264 1265 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { 1266 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); 1267 1268 br->multicast_startup_query_count = val; 1269 } 1270 1271 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { 1272 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); 1273 1274 br->multicast_last_member_interval = clock_t_to_jiffies(val); 1275 } 1276 1277 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { 1278 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); 1279 1280 br->multicast_membership_interval = clock_t_to_jiffies(val); 1281 } 1282 1283 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { 1284 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); 1285 1286 br->multicast_querier_interval = clock_t_to_jiffies(val); 1287 } 1288 1289 if (data[IFLA_BR_MCAST_QUERY_INTVL]) { 1290 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); 1291 1292 br->multicast_query_interval = clock_t_to_jiffies(val); 1293 } 1294 1295 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { 1296 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); 1297 1298 br->multicast_query_response_interval = clock_t_to_jiffies(val); 1299 } 1300 1301 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { 1302 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); 1303 1304 br->multicast_startup_query_interval = clock_t_to_jiffies(val); 1305 } 1306 1307 if (data[IFLA_BR_MCAST_STATS_ENABLED]) { 1308 __u8 mcast_stats; 1309 1310 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]); 1311 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats); 1312 } 1313 1314 if (data[IFLA_BR_MCAST_IGMP_VERSION]) { 1315 __u8 igmp_version; 1316 1317 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]); 1318 err = br_multicast_set_igmp_version(br, igmp_version); 1319 if (err) 1320 return err; 1321 } 1322 1323 #if IS_ENABLED(CONFIG_IPV6) 1324 if (data[IFLA_BR_MCAST_MLD_VERSION]) { 1325 __u8 mld_version; 1326 1327 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]); 1328 err = br_multicast_set_mld_version(br, mld_version); 1329 if (err) 1330 return err; 1331 } 1332 #endif 1333 #endif 1334 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1335 if (data[IFLA_BR_NF_CALL_IPTABLES]) { 1336 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); 1337 1338 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); 1339 } 1340 1341 if (data[IFLA_BR_NF_CALL_IP6TABLES]) { 1342 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); 1343 1344 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); 1345 } 1346 1347 if (data[IFLA_BR_NF_CALL_ARPTABLES]) { 1348 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); 1349 1350 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); 1351 } 1352 #endif 1353 1354 if (data[IFLA_BR_MULTI_BOOLOPT]) { 1355 struct br_boolopt_multi *bm; 1356 1357 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]); 1358 err = br_boolopt_multi_toggle(br, bm, extack); 1359 if (err) 1360 return err; 1361 } 1362 1363 return 0; 1364 } 1365 1366 static int br_dev_newlink(struct net *src_net, struct net_device *dev, 1367 struct nlattr *tb[], struct nlattr *data[], 1368 struct netlink_ext_ack *extack) 1369 { 1370 struct net_bridge *br = netdev_priv(dev); 1371 int err; 1372 1373 err = register_netdevice(dev); 1374 if (err) 1375 return err; 1376 1377 if (tb[IFLA_ADDRESS]) { 1378 spin_lock_bh(&br->lock); 1379 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); 1380 spin_unlock_bh(&br->lock); 1381 } 1382 1383 err = br_changelink(dev, tb, data, extack); 1384 if (err) 1385 br_dev_delete(dev, NULL); 1386 1387 return err; 1388 } 1389 1390 static size_t br_get_size(const struct net_device *brdev) 1391 { 1392 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ 1393 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ 1394 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ 1395 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ 1396 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ 1397 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ 1398 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ 1399 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1400 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ 1401 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ 1402 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ 1403 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */ 1404 #endif 1405 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ 1406 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ 1407 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ 1408 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ 1409 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ 1410 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ 1411 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ 1412 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ 1413 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ 1414 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ 1415 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ 1416 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ 1417 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1418 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ 1419 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ 1420 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ 1421 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ 1422 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */ 1423 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ 1424 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ 1425 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ 1426 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ 1427 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ 1428 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ 1429 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ 1430 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ 1431 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ 1432 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ 1433 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */ 1434 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */ 1435 #endif 1436 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1437 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ 1438 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ 1439 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ 1440 #endif 1441 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */ 1442 0; 1443 } 1444 1445 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) 1446 { 1447 struct net_bridge *br = netdev_priv(brdev); 1448 u32 forward_delay = jiffies_to_clock_t(br->forward_delay); 1449 u32 hello_time = jiffies_to_clock_t(br->hello_time); 1450 u32 age_time = jiffies_to_clock_t(br->max_age); 1451 u32 ageing_time = jiffies_to_clock_t(br->ageing_time); 1452 u32 stp_enabled = br->stp_enabled; 1453 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; 1454 u8 vlan_enabled = br_vlan_enabled(br->dev); 1455 struct br_boolopt_multi bm; 1456 u64 clockval; 1457 1458 clockval = br_timer_value(&br->hello_timer); 1459 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) 1460 return -EMSGSIZE; 1461 clockval = br_timer_value(&br->tcn_timer); 1462 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) 1463 return -EMSGSIZE; 1464 clockval = br_timer_value(&br->topology_change_timer); 1465 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, 1466 IFLA_BR_PAD)) 1467 return -EMSGSIZE; 1468 clockval = br_timer_value(&br->gc_work.timer); 1469 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) 1470 return -EMSGSIZE; 1471 1472 br_boolopt_multi_get(br, &bm); 1473 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || 1474 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || 1475 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || 1476 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || 1477 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || 1478 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || 1479 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || 1480 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || 1481 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), 1482 &br->bridge_id) || 1483 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), 1484 &br->designated_root) || 1485 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || 1486 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || 1487 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || 1488 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, 1489 br->topology_change_detected) || 1490 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) || 1491 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm)) 1492 return -EMSGSIZE; 1493 1494 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1495 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || 1496 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || 1497 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, 1498 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) || 1499 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT, 1500 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT))) 1501 return -EMSGSIZE; 1502 #endif 1503 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1504 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || 1505 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, 1506 br_opt_get(br, BROPT_MULTICAST_ENABLED)) || 1507 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, 1508 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) || 1509 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, 1510 br_opt_get(br, BROPT_MULTICAST_QUERIER)) || 1511 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED, 1512 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) || 1513 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) || 1514 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || 1515 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, 1516 br->multicast_last_member_count) || 1517 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, 1518 br->multicast_startup_query_count) || 1519 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION, 1520 br->multicast_igmp_version)) 1521 return -EMSGSIZE; 1522 #if IS_ENABLED(CONFIG_IPV6) 1523 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION, 1524 br->multicast_mld_version)) 1525 return -EMSGSIZE; 1526 #endif 1527 clockval = jiffies_to_clock_t(br->multicast_last_member_interval); 1528 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, 1529 IFLA_BR_PAD)) 1530 return -EMSGSIZE; 1531 clockval = jiffies_to_clock_t(br->multicast_membership_interval); 1532 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, 1533 IFLA_BR_PAD)) 1534 return -EMSGSIZE; 1535 clockval = jiffies_to_clock_t(br->multicast_querier_interval); 1536 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, 1537 IFLA_BR_PAD)) 1538 return -EMSGSIZE; 1539 clockval = jiffies_to_clock_t(br->multicast_query_interval); 1540 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, 1541 IFLA_BR_PAD)) 1542 return -EMSGSIZE; 1543 clockval = jiffies_to_clock_t(br->multicast_query_response_interval); 1544 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, 1545 IFLA_BR_PAD)) 1546 return -EMSGSIZE; 1547 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); 1548 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, 1549 IFLA_BR_PAD)) 1550 return -EMSGSIZE; 1551 #endif 1552 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1553 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, 1554 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) || 1555 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, 1556 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) || 1557 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, 1558 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0)) 1559 return -EMSGSIZE; 1560 #endif 1561 1562 return 0; 1563 } 1564 1565 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr) 1566 { 1567 struct net_bridge_port *p = NULL; 1568 struct net_bridge_vlan_group *vg; 1569 struct net_bridge_vlan *v; 1570 struct net_bridge *br; 1571 int numvls = 0; 1572 1573 switch (attr) { 1574 case IFLA_STATS_LINK_XSTATS: 1575 br = netdev_priv(dev); 1576 vg = br_vlan_group(br); 1577 break; 1578 case IFLA_STATS_LINK_XSTATS_SLAVE: 1579 p = br_port_get_rtnl(dev); 1580 if (!p) 1581 return 0; 1582 br = p->br; 1583 vg = nbp_vlan_group(p); 1584 break; 1585 default: 1586 return 0; 1587 } 1588 1589 if (vg) { 1590 /* we need to count all, even placeholder entries */ 1591 list_for_each_entry(v, &vg->vlan_list, vlist) 1592 numvls++; 1593 } 1594 1595 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + 1596 nla_total_size(sizeof(struct br_mcast_stats)) + 1597 nla_total_size(0); 1598 } 1599 1600 static int br_fill_linkxstats(struct sk_buff *skb, 1601 const struct net_device *dev, 1602 int *prividx, int attr) 1603 { 1604 struct nlattr *nla __maybe_unused; 1605 struct net_bridge_port *p = NULL; 1606 struct net_bridge_vlan_group *vg; 1607 struct net_bridge_vlan *v; 1608 struct net_bridge *br; 1609 struct nlattr *nest; 1610 int vl_idx = 0; 1611 1612 switch (attr) { 1613 case IFLA_STATS_LINK_XSTATS: 1614 br = netdev_priv(dev); 1615 vg = br_vlan_group(br); 1616 break; 1617 case IFLA_STATS_LINK_XSTATS_SLAVE: 1618 p = br_port_get_rtnl(dev); 1619 if (!p) 1620 return 0; 1621 br = p->br; 1622 vg = nbp_vlan_group(p); 1623 break; 1624 default: 1625 return -EINVAL; 1626 } 1627 1628 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE); 1629 if (!nest) 1630 return -EMSGSIZE; 1631 1632 if (vg) { 1633 u16 pvid; 1634 1635 pvid = br_get_pvid(vg); 1636 list_for_each_entry(v, &vg->vlan_list, vlist) { 1637 struct bridge_vlan_xstats vxi; 1638 struct br_vlan_stats stats; 1639 1640 if (++vl_idx < *prividx) 1641 continue; 1642 memset(&vxi, 0, sizeof(vxi)); 1643 vxi.vid = v->vid; 1644 vxi.flags = v->flags; 1645 if (v->vid == pvid) 1646 vxi.flags |= BRIDGE_VLAN_INFO_PVID; 1647 br_vlan_get_stats(v, &stats); 1648 vxi.rx_bytes = stats.rx_bytes; 1649 vxi.rx_packets = stats.rx_packets; 1650 vxi.tx_bytes = stats.tx_bytes; 1651 vxi.tx_packets = stats.tx_packets; 1652 1653 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) 1654 goto nla_put_failure; 1655 } 1656 } 1657 1658 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1659 if (++vl_idx >= *prividx) { 1660 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST, 1661 sizeof(struct br_mcast_stats), 1662 BRIDGE_XSTATS_PAD); 1663 if (!nla) 1664 goto nla_put_failure; 1665 br_multicast_get_stats(br, p, nla_data(nla)); 1666 } 1667 #endif 1668 1669 if (p) { 1670 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP, 1671 sizeof(p->stp_xstats), 1672 BRIDGE_XSTATS_PAD); 1673 if (!nla) 1674 goto nla_put_failure; 1675 1676 spin_lock_bh(&br->lock); 1677 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats)); 1678 spin_unlock_bh(&br->lock); 1679 } 1680 1681 nla_nest_end(skb, nest); 1682 *prividx = 0; 1683 1684 return 0; 1685 1686 nla_put_failure: 1687 nla_nest_end(skb, nest); 1688 *prividx = vl_idx; 1689 1690 return -EMSGSIZE; 1691 } 1692 1693 static struct rtnl_af_ops br_af_ops __read_mostly = { 1694 .family = AF_BRIDGE, 1695 .get_link_af_size = br_get_link_af_size_filtered, 1696 }; 1697 1698 struct rtnl_link_ops br_link_ops __read_mostly = { 1699 .kind = "bridge", 1700 .priv_size = sizeof(struct net_bridge), 1701 .setup = br_dev_setup, 1702 .maxtype = IFLA_BR_MAX, 1703 .policy = br_policy, 1704 .validate = br_validate, 1705 .newlink = br_dev_newlink, 1706 .changelink = br_changelink, 1707 .dellink = br_dev_delete, 1708 .get_size = br_get_size, 1709 .fill_info = br_fill_info, 1710 .fill_linkxstats = br_fill_linkxstats, 1711 .get_linkxstats_size = br_get_linkxstats_size, 1712 1713 .slave_maxtype = IFLA_BRPORT_MAX, 1714 .slave_policy = br_port_policy, 1715 .slave_changelink = br_port_slave_changelink, 1716 .get_slave_size = br_port_get_slave_size, 1717 .fill_slave_info = br_port_fill_slave_info, 1718 }; 1719 1720 int __init br_netlink_init(void) 1721 { 1722 int err; 1723 1724 br_mdb_init(); 1725 br_vlan_rtnl_init(); 1726 rtnl_af_register(&br_af_ops); 1727 1728 err = rtnl_link_register(&br_link_ops); 1729 if (err) 1730 goto out_af; 1731 1732 return 0; 1733 1734 out_af: 1735 rtnl_af_unregister(&br_af_ops); 1736 br_mdb_uninit(); 1737 return err; 1738 } 1739 1740 void br_netlink_fini(void) 1741 { 1742 br_mdb_uninit(); 1743 br_vlan_rtnl_uninit(); 1744 rtnl_af_unregister(&br_af_ops); 1745 rtnl_link_unregister(&br_link_ops); 1746 } 1747