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