1/* 2 * Bridge netlink control interface 3 * 4 * Authors: 5 * Stephen Hemminger <shemminger@osdl.org> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 */ 12 13#include <linux/kernel.h> 14#include <linux/slab.h> 15#include <linux/etherdevice.h> 16#include <net/rtnetlink.h> 17#include <net/net_namespace.h> 18#include <net/sock.h> 19#include <uapi/linux/if_bridge.h> 20 21#include "br_private.h" 22#include "br_private_stp.h" 23 24static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg, 25 u32 filter_mask) 26{ 27 struct net_bridge_vlan *v; 28 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; 29 u16 flags, pvid; 30 int num_vlans = 0; 31 32 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) 33 return 0; 34 35 pvid = br_get_pvid(vg); 36 /* Count number of vlan infos */ 37 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 38 flags = 0; 39 /* only a context, bridge vlan not activated */ 40 if (!br_vlan_should_use(v)) 41 continue; 42 if (v->vid == pvid) 43 flags |= BRIDGE_VLAN_INFO_PVID; 44 45 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 46 flags |= BRIDGE_VLAN_INFO_UNTAGGED; 47 48 if (vid_range_start == 0) { 49 goto initvars; 50 } else if ((v->vid - vid_range_end) == 1 && 51 flags == vid_range_flags) { 52 vid_range_end = v->vid; 53 continue; 54 } else { 55 if ((vid_range_end - vid_range_start) > 0) 56 num_vlans += 2; 57 else 58 num_vlans += 1; 59 } 60initvars: 61 vid_range_start = v->vid; 62 vid_range_end = v->vid; 63 vid_range_flags = flags; 64 } 65 66 if (vid_range_start != 0) { 67 if ((vid_range_end - vid_range_start) > 0) 68 num_vlans += 2; 69 else 70 num_vlans += 1; 71 } 72 73 return num_vlans; 74} 75 76static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg, 77 u32 filter_mask) 78{ 79 int num_vlans; 80 81 if (!vg) 82 return 0; 83 84 if (filter_mask & RTEXT_FILTER_BRVLAN) 85 return vg->num_vlans; 86 87 rcu_read_lock(); 88 num_vlans = __get_num_vlan_infos(vg, filter_mask); 89 rcu_read_unlock(); 90 91 return num_vlans; 92} 93 94static size_t br_get_link_af_size_filtered(const struct net_device *dev, 95 u32 filter_mask) 96{ 97 struct net_bridge_vlan_group *vg = NULL; 98 struct net_bridge_port *p; 99 struct net_bridge *br; 100 int num_vlan_infos; 101 102 rcu_read_lock(); 103 if (br_port_exists(dev)) { 104 p = br_port_get_rcu(dev); 105 vg = nbp_vlan_group_rcu(p); 106 } else if (dev->priv_flags & IFF_EBRIDGE) { 107 br = netdev_priv(dev); 108 vg = br_vlan_group_rcu(br); 109 } 110 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask); 111 rcu_read_unlock(); 112 113 /* Each VLAN is returned in bridge_vlan_info along with flags */ 114 return num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); 115} 116 117static inline size_t br_port_info_size(void) 118{ 119 return nla_total_size(1) /* IFLA_BRPORT_STATE */ 120 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ 121 + nla_total_size(4) /* IFLA_BRPORT_COST */ 122 + nla_total_size(1) /* IFLA_BRPORT_MODE */ 123 + nla_total_size(1) /* IFLA_BRPORT_GUARD */ 124 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ 125 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ 126 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ 127 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ 128 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */ 129 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */ 130 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */ 131 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */ 132 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */ 133 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */ 134 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */ 135 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */ 136 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */ 137 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */ 138 + nla_total_size(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */ 139 + nla_total_size(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */ 140 + nla_total_size(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */ 141#ifdef CONFIG_BRIDGE_IGMP_SNOOPING 142 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */ 143#endif 144 + 0; 145} 146 147static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) 148{ 149 return NLMSG_ALIGN(sizeof(struct ifinfomsg)) 150 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ 151 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ 152 + nla_total_size(4) /* IFLA_MASTER */ 153 + nla_total_size(4) /* IFLA_MTU */ 154 + nla_total_size(4) /* IFLA_LINK */ 155 + nla_total_size(1) /* IFLA_OPERSTATE */ 156 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ 157 + nla_total_size(br_get_link_af_size_filtered(dev, 158 filter_mask)); /* IFLA_AF_SPEC */ 159} 160 161static int br_port_fill_attrs(struct sk_buff *skb, 162 const struct net_bridge_port *p) 163{ 164 u8 mode = !!(p->flags & BR_HAIRPIN_MODE); 165 u64 timerval; 166 167 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || 168 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || 169 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || 170 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || 171 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || 172 nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) || 173 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || 174 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || 175 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)) || 176 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || 177 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, 178 !!(p->flags & BR_PROXYARP_WIFI)) || 179 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id), 180 &p->designated_root) || 181 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id), 182 &p->designated_bridge) || 183 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) || 184 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) || 185 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) || 186 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) || 187 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, 188 p->topology_change_ack) || 189 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending)) 190 return -EMSGSIZE; 191 192 timerval = br_timer_value(&p->message_age_timer); 193 if (nla_put_u64(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval)) 194 return -EMSGSIZE; 195 timerval = br_timer_value(&p->forward_delay_timer); 196 if (nla_put_u64(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval)) 197 return -EMSGSIZE; 198 timerval = br_timer_value(&p->hold_timer); 199 if (nla_put_u64(skb, IFLA_BRPORT_HOLD_TIMER, timerval)) 200 return -EMSGSIZE; 201 202#ifdef CONFIG_BRIDGE_IGMP_SNOOPING 203 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER, 204 p->multicast_router)) 205 return -EMSGSIZE; 206#endif 207 208 return 0; 209} 210 211static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, 212 u16 vid_end, u16 flags) 213{ 214 struct bridge_vlan_info vinfo; 215 216 if ((vid_end - vid_start) > 0) { 217 /* add range to skb */ 218 vinfo.vid = vid_start; 219 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; 220 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 221 sizeof(vinfo), &vinfo)) 222 goto nla_put_failure; 223 224 vinfo.vid = vid_end; 225 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; 226 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 227 sizeof(vinfo), &vinfo)) 228 goto nla_put_failure; 229 } else { 230 vinfo.vid = vid_start; 231 vinfo.flags = flags; 232 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 233 sizeof(vinfo), &vinfo)) 234 goto nla_put_failure; 235 } 236 237 return 0; 238 239nla_put_failure: 240 return -EMSGSIZE; 241} 242 243static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, 244 struct net_bridge_vlan_group *vg) 245{ 246 struct net_bridge_vlan *v; 247 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; 248 u16 flags, pvid; 249 int err = 0; 250 251 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan 252 * and mark vlan info with begin and end flags 253 * if vlaninfo represents a range 254 */ 255 pvid = br_get_pvid(vg); 256 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 257 flags = 0; 258 if (!br_vlan_should_use(v)) 259 continue; 260 if (v->vid == pvid) 261 flags |= BRIDGE_VLAN_INFO_PVID; 262 263 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 264 flags |= BRIDGE_VLAN_INFO_UNTAGGED; 265 266 if (vid_range_start == 0) { 267 goto initvars; 268 } else if ((v->vid - vid_range_end) == 1 && 269 flags == vid_range_flags) { 270 vid_range_end = v->vid; 271 continue; 272 } else { 273 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 274 vid_range_end, 275 vid_range_flags); 276 if (err) 277 return err; 278 } 279 280initvars: 281 vid_range_start = v->vid; 282 vid_range_end = v->vid; 283 vid_range_flags = flags; 284 } 285 286 if (vid_range_start != 0) { 287 /* Call it once more to send any left over vlans */ 288 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 289 vid_range_end, 290 vid_range_flags); 291 if (err) 292 return err; 293 } 294 295 return 0; 296} 297 298static int br_fill_ifvlaninfo(struct sk_buff *skb, 299 struct net_bridge_vlan_group *vg) 300{ 301 struct bridge_vlan_info vinfo; 302 struct net_bridge_vlan *v; 303 u16 pvid; 304 305 pvid = br_get_pvid(vg); 306 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 307 if (!br_vlan_should_use(v)) 308 continue; 309 310 vinfo.vid = v->vid; 311 vinfo.flags = 0; 312 if (v->vid == pvid) 313 vinfo.flags |= BRIDGE_VLAN_INFO_PVID; 314 315 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 316 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; 317 318 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 319 sizeof(vinfo), &vinfo)) 320 goto nla_put_failure; 321 } 322 323 return 0; 324 325nla_put_failure: 326 return -EMSGSIZE; 327} 328 329/* 330 * Create one netlink message for one interface 331 * Contains port and master info as well as carrier and bridge state. 332 */ 333static int br_fill_ifinfo(struct sk_buff *skb, 334 struct net_bridge_port *port, 335 u32 pid, u32 seq, int event, unsigned int flags, 336 u32 filter_mask, const struct net_device *dev) 337{ 338 struct net_bridge *br; 339 struct ifinfomsg *hdr; 340 struct nlmsghdr *nlh; 341 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; 342 343 if (port) 344 br = port->br; 345 else 346 br = netdev_priv(dev); 347 348 br_debug(br, "br_fill_info event %d port %s master %s\n", 349 event, dev->name, br->dev->name); 350 351 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); 352 if (nlh == NULL) 353 return -EMSGSIZE; 354 355 hdr = nlmsg_data(nlh); 356 hdr->ifi_family = AF_BRIDGE; 357 hdr->__ifi_pad = 0; 358 hdr->ifi_type = dev->type; 359 hdr->ifi_index = dev->ifindex; 360 hdr->ifi_flags = dev_get_flags(dev); 361 hdr->ifi_change = 0; 362 363 if (nla_put_string(skb, IFLA_IFNAME, dev->name) || 364 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || 365 nla_put_u32(skb, IFLA_MTU, dev->mtu) || 366 nla_put_u8(skb, IFLA_OPERSTATE, operstate) || 367 (dev->addr_len && 368 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || 369 (dev->ifindex != dev_get_iflink(dev) && 370 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) 371 goto nla_put_failure; 372 373 if (event == RTM_NEWLINK && port) { 374 struct nlattr *nest 375 = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); 376 377 if (nest == NULL || br_port_fill_attrs(skb, port) < 0) 378 goto nla_put_failure; 379 nla_nest_end(skb, nest); 380 } 381 382 /* Check if the VID information is requested */ 383 if ((filter_mask & RTEXT_FILTER_BRVLAN) || 384 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { 385 struct net_bridge_vlan_group *vg; 386 struct nlattr *af; 387 int err; 388 389 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */ 390 rcu_read_lock(); 391 if (port) 392 vg = nbp_vlan_group_rcu(port); 393 else 394 vg = br_vlan_group_rcu(br); 395 396 if (!vg || !vg->num_vlans) { 397 rcu_read_unlock(); 398 goto done; 399 } 400 af = nla_nest_start(skb, IFLA_AF_SPEC); 401 if (!af) { 402 rcu_read_unlock(); 403 goto nla_put_failure; 404 } 405 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) 406 err = br_fill_ifvlaninfo_compressed(skb, vg); 407 else 408 err = br_fill_ifvlaninfo(skb, vg); 409 rcu_read_unlock(); 410 if (err) 411 goto nla_put_failure; 412 nla_nest_end(skb, af); 413 } 414 415done: 416 nlmsg_end(skb, nlh); 417 return 0; 418 419nla_put_failure: 420 nlmsg_cancel(skb, nlh); 421 return -EMSGSIZE; 422} 423 424/* 425 * Notify listeners of a change in port information 426 */ 427void br_ifinfo_notify(int event, struct net_bridge_port *port) 428{ 429 struct net *net; 430 struct sk_buff *skb; 431 int err = -ENOBUFS; 432 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; 433 434 if (!port) 435 return; 436 437 net = dev_net(port->dev); 438 br_debug(port->br, "port %u(%s) event %d\n", 439 (unsigned int)port->port_no, port->dev->name, event); 440 441 skb = nlmsg_new(br_nlmsg_size(port->dev, filter), GFP_ATOMIC); 442 if (skb == NULL) 443 goto errout; 444 445 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, port->dev); 446 if (err < 0) { 447 /* -EMSGSIZE implies BUG in br_nlmsg_size() */ 448 WARN_ON(err == -EMSGSIZE); 449 kfree_skb(skb); 450 goto errout; 451 } 452 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); 453 return; 454errout: 455 rtnl_set_sk_err(net, RTNLGRP_LINK, err); 456} 457 458 459/* 460 * Dump information about all ports, in response to GETLINK 461 */ 462int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, 463 struct net_device *dev, u32 filter_mask, int nlflags) 464{ 465 struct net_bridge_port *port = br_port_get_rtnl(dev); 466 467 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && 468 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) 469 return 0; 470 471 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, 472 filter_mask, dev); 473} 474 475static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, 476 int cmd, struct bridge_vlan_info *vinfo) 477{ 478 int err = 0; 479 480 switch (cmd) { 481 case RTM_SETLINK: 482 if (p) { 483 /* if the MASTER flag is set this will act on the global 484 * per-VLAN entry as well 485 */ 486 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags); 487 if (err) 488 break; 489 } else { 490 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; 491 err = br_vlan_add(br, vinfo->vid, vinfo->flags); 492 } 493 break; 494 495 case RTM_DELLINK: 496 if (p) { 497 nbp_vlan_delete(p, vinfo->vid); 498 if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) 499 br_vlan_delete(p->br, vinfo->vid); 500 } else { 501 br_vlan_delete(br, vinfo->vid); 502 } 503 break; 504 } 505 506 return err; 507} 508 509static int br_afspec(struct net_bridge *br, 510 struct net_bridge_port *p, 511 struct nlattr *af_spec, 512 int cmd) 513{ 514 struct bridge_vlan_info *vinfo_start = NULL; 515 struct bridge_vlan_info *vinfo = NULL; 516 struct nlattr *attr; 517 int err = 0; 518 int rem; 519 520 nla_for_each_nested(attr, af_spec, rem) { 521 if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO) 522 continue; 523 if (nla_len(attr) != sizeof(struct bridge_vlan_info)) 524 return -EINVAL; 525 vinfo = nla_data(attr); 526 if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK) 527 return -EINVAL; 528 if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 529 if (vinfo_start) 530 return -EINVAL; 531 vinfo_start = vinfo; 532 /* don't allow range of pvids */ 533 if (vinfo_start->flags & BRIDGE_VLAN_INFO_PVID) 534 return -EINVAL; 535 continue; 536 } 537 538 if (vinfo_start) { 539 struct bridge_vlan_info tmp_vinfo; 540 int v; 541 542 if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END)) 543 return -EINVAL; 544 545 if (vinfo->vid <= vinfo_start->vid) 546 return -EINVAL; 547 548 memcpy(&tmp_vinfo, vinfo_start, 549 sizeof(struct bridge_vlan_info)); 550 551 for (v = vinfo_start->vid; v <= vinfo->vid; v++) { 552 tmp_vinfo.vid = v; 553 err = br_vlan_info(br, p, cmd, &tmp_vinfo); 554 if (err) 555 break; 556 } 557 vinfo_start = NULL; 558 } else { 559 err = br_vlan_info(br, p, cmd, vinfo); 560 } 561 if (err) 562 break; 563 } 564 565 return err; 566} 567 568static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { 569 [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, 570 [IFLA_BRPORT_COST] = { .type = NLA_U32 }, 571 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, 572 [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, 573 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, 574 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, 575 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, 576 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, 577 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, 578 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, 579 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, 580 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, 581}; 582 583/* Change the state of the port and notify spanning tree */ 584static int br_set_port_state(struct net_bridge_port *p, u8 state) 585{ 586 if (state > BR_STATE_BLOCKING) 587 return -EINVAL; 588 589 /* if kernel STP is running, don't allow changes */ 590 if (p->br->stp_enabled == BR_KERNEL_STP) 591 return -EBUSY; 592 593 /* if device is not up, change is not allowed 594 * if link is not present, only allowable state is disabled 595 */ 596 if (!netif_running(p->dev) || 597 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) 598 return -ENETDOWN; 599 600 br_set_state(p, state); 601 br_log_state(p); 602 br_port_state_selection(p->br); 603 return 0; 604} 605 606/* Set/clear or port flags based on attribute */ 607static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], 608 int attrtype, unsigned long mask) 609{ 610 if (tb[attrtype]) { 611 u8 flag = nla_get_u8(tb[attrtype]); 612 if (flag) 613 p->flags |= mask; 614 else 615 p->flags &= ~mask; 616 } 617} 618 619/* Process bridge protocol info on port */ 620static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) 621{ 622 int err; 623 unsigned long old_flags = p->flags; 624 625 br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); 626 br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); 627 br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); 628 br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); 629 br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); 630 br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); 631 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); 632 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); 633 634 if (tb[IFLA_BRPORT_COST]) { 635 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); 636 if (err) 637 return err; 638 } 639 640 if (tb[IFLA_BRPORT_PRIORITY]) { 641 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); 642 if (err) 643 return err; 644 } 645 646 if (tb[IFLA_BRPORT_STATE]) { 647 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); 648 if (err) 649 return err; 650 } 651 652 if (tb[IFLA_BRPORT_FLUSH]) 653 br_fdb_delete_by_port(p->br, p, 0, 0); 654 655#ifdef CONFIG_BRIDGE_IGMP_SNOOPING 656 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { 657 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); 658 659 err = br_multicast_set_port_router(p, mcast_router); 660 if (err) 661 return err; 662 } 663#endif 664 br_port_flags_change(p, old_flags ^ p->flags); 665 return 0; 666} 667 668/* Change state and parameters on port. */ 669int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) 670{ 671 struct nlattr *protinfo; 672 struct nlattr *afspec; 673 struct net_bridge_port *p; 674 struct nlattr *tb[IFLA_BRPORT_MAX + 1]; 675 int err = 0; 676 677 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); 678 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 679 if (!protinfo && !afspec) 680 return 0; 681 682 p = br_port_get_rtnl(dev); 683 /* We want to accept dev as bridge itself if the AF_SPEC 684 * is set to see if someone is setting vlan info on the bridge 685 */ 686 if (!p && !afspec) 687 return -EINVAL; 688 689 if (p && protinfo) { 690 if (protinfo->nla_type & NLA_F_NESTED) { 691 err = nla_parse_nested(tb, IFLA_BRPORT_MAX, 692 protinfo, br_port_policy); 693 if (err) 694 return err; 695 696 spin_lock_bh(&p->br->lock); 697 err = br_setport(p, tb); 698 spin_unlock_bh(&p->br->lock); 699 } else { 700 /* Binary compatibility with old RSTP */ 701 if (nla_len(protinfo) < sizeof(u8)) 702 return -EINVAL; 703 704 spin_lock_bh(&p->br->lock); 705 err = br_set_port_state(p, nla_get_u8(protinfo)); 706 spin_unlock_bh(&p->br->lock); 707 } 708 if (err) 709 goto out; 710 } 711 712 if (afspec) { 713 err = br_afspec((struct net_bridge *)netdev_priv(dev), p, 714 afspec, RTM_SETLINK); 715 } 716 717 if (err == 0) 718 br_ifinfo_notify(RTM_NEWLINK, p); 719out: 720 return err; 721} 722 723/* Delete port information */ 724int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) 725{ 726 struct nlattr *afspec; 727 struct net_bridge_port *p; 728 int err = 0; 729 730 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 731 if (!afspec) 732 return 0; 733 734 p = br_port_get_rtnl(dev); 735 /* We want to accept dev as bridge itself as well */ 736 if (!p && !(dev->priv_flags & IFF_EBRIDGE)) 737 return -EINVAL; 738 739 err = br_afspec((struct net_bridge *)netdev_priv(dev), p, 740 afspec, RTM_DELLINK); 741 if (err == 0) 742 /* Send RTM_NEWLINK because userspace 743 * expects RTM_NEWLINK for vlan dels 744 */ 745 br_ifinfo_notify(RTM_NEWLINK, p); 746 747 return err; 748} 749static int br_validate(struct nlattr *tb[], struct nlattr *data[]) 750{ 751 if (tb[IFLA_ADDRESS]) { 752 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 753 return -EINVAL; 754 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 755 return -EADDRNOTAVAIL; 756 } 757 758 if (!data) 759 return 0; 760 761#ifdef CONFIG_BRIDGE_VLAN_FILTERING 762 if (data[IFLA_BR_VLAN_PROTOCOL]) { 763 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) { 764 case htons(ETH_P_8021Q): 765 case htons(ETH_P_8021AD): 766 break; 767 default: 768 return -EPROTONOSUPPORT; 769 } 770 } 771#endif 772 773 return 0; 774} 775 776static int br_dev_newlink(struct net *src_net, struct net_device *dev, 777 struct nlattr *tb[], struct nlattr *data[]) 778{ 779 struct net_bridge *br = netdev_priv(dev); 780 781 if (tb[IFLA_ADDRESS]) { 782 spin_lock_bh(&br->lock); 783 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); 784 spin_unlock_bh(&br->lock); 785 } 786 787 return register_netdevice(dev); 788} 789 790static int br_port_slave_changelink(struct net_device *brdev, 791 struct net_device *dev, 792 struct nlattr *tb[], 793 struct nlattr *data[]) 794{ 795 struct net_bridge *br = netdev_priv(brdev); 796 int ret; 797 798 if (!data) 799 return 0; 800 801 spin_lock_bh(&br->lock); 802 ret = br_setport(br_port_get_rtnl(dev), data); 803 spin_unlock_bh(&br->lock); 804 805 return ret; 806} 807 808static int br_port_fill_slave_info(struct sk_buff *skb, 809 const struct net_device *brdev, 810 const struct net_device *dev) 811{ 812 return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); 813} 814 815static size_t br_port_get_slave_size(const struct net_device *brdev, 816 const struct net_device *dev) 817{ 818 return br_port_info_size(); 819} 820 821static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { 822 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, 823 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, 824 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, 825 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, 826 [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, 827 [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, 828 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, 829 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, 830 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, 831 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, 832 .len = ETH_ALEN }, 833 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, 834 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, 835 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, 836 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, 837 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, 838 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, 839 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 840 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 841 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 842 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 843 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 844 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 845 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 846 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 847 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, 848 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, 849 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, 850 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, 851}; 852 853static int br_changelink(struct net_device *brdev, struct nlattr *tb[], 854 struct nlattr *data[]) 855{ 856 struct net_bridge *br = netdev_priv(brdev); 857 int err; 858 859 if (!data) 860 return 0; 861 862 if (data[IFLA_BR_FORWARD_DELAY]) { 863 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); 864 if (err) 865 return err; 866 } 867 868 if (data[IFLA_BR_HELLO_TIME]) { 869 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); 870 if (err) 871 return err; 872 } 873 874 if (data[IFLA_BR_MAX_AGE]) { 875 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); 876 if (err) 877 return err; 878 } 879 880 if (data[IFLA_BR_AGEING_TIME]) { 881 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); 882 if (err) 883 return err; 884 } 885 886 if (data[IFLA_BR_STP_STATE]) { 887 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); 888 889 br_stp_set_enabled(br, stp_enabled); 890 } 891 892 if (data[IFLA_BR_PRIORITY]) { 893 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); 894 895 br_stp_set_bridge_priority(br, priority); 896 } 897 898 if (data[IFLA_BR_VLAN_FILTERING]) { 899 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); 900 901 err = __br_vlan_filter_toggle(br, vlan_filter); 902 if (err) 903 return err; 904 } 905 906#ifdef CONFIG_BRIDGE_VLAN_FILTERING 907 if (data[IFLA_BR_VLAN_PROTOCOL]) { 908 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); 909 910 err = __br_vlan_set_proto(br, vlan_proto); 911 if (err) 912 return err; 913 } 914 915 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 916 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 917 918 err = __br_vlan_set_default_pvid(br, defpvid); 919 if (err) 920 return err; 921 } 922#endif 923 924 if (data[IFLA_BR_GROUP_FWD_MASK]) { 925 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); 926 927 if (fwd_mask & BR_GROUPFWD_RESTRICTED) 928 return -EINVAL; 929 br->group_fwd_mask = fwd_mask; 930 } 931 932 if (data[IFLA_BR_GROUP_ADDR]) { 933 u8 new_addr[ETH_ALEN]; 934 935 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) 936 return -EINVAL; 937 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); 938 if (!is_link_local_ether_addr(new_addr)) 939 return -EINVAL; 940 if (new_addr[5] == 1 || /* 802.3x Pause address */ 941 new_addr[5] == 2 || /* 802.3ad Slow protocols */ 942 new_addr[5] == 3) /* 802.1X PAE address */ 943 return -EINVAL; 944 spin_lock_bh(&br->lock); 945 memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); 946 spin_unlock_bh(&br->lock); 947 br->group_addr_set = true; 948 br_recalculate_fwd_mask(br); 949 } 950 951 if (data[IFLA_BR_FDB_FLUSH]) 952 br_fdb_flush(br); 953 954#ifdef CONFIG_BRIDGE_IGMP_SNOOPING 955 if (data[IFLA_BR_MCAST_ROUTER]) { 956 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); 957 958 err = br_multicast_set_router(br, multicast_router); 959 if (err) 960 return err; 961 } 962 963 if (data[IFLA_BR_MCAST_SNOOPING]) { 964 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); 965 966 err = br_multicast_toggle(br, mcast_snooping); 967 if (err) 968 return err; 969 } 970 971 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { 972 u8 val; 973 974 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); 975 br->multicast_query_use_ifaddr = !!val; 976 } 977 978 if (data[IFLA_BR_MCAST_QUERIER]) { 979 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); 980 981 err = br_multicast_set_querier(br, mcast_querier); 982 if (err) 983 return err; 984 } 985 986 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) { 987 u32 val = nla_get_u32(data[IFLA_BR_MCAST_HASH_ELASTICITY]); 988 989 br->hash_elasticity = val; 990 } 991 992 if (data[IFLA_BR_MCAST_HASH_MAX]) { 993 u32 hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); 994 995 err = br_multicast_set_hash_max(br, hash_max); 996 if (err) 997 return err; 998 } 999 1000 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { 1001 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); 1002 1003 br->multicast_last_member_count = val; 1004 } 1005 1006 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { 1007 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); 1008 1009 br->multicast_startup_query_count = val; 1010 } 1011 1012 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { 1013 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); 1014 1015 br->multicast_last_member_interval = clock_t_to_jiffies(val); 1016 } 1017 1018 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { 1019 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); 1020 1021 br->multicast_membership_interval = clock_t_to_jiffies(val); 1022 } 1023 1024 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { 1025 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); 1026 1027 br->multicast_querier_interval = clock_t_to_jiffies(val); 1028 } 1029 1030 if (data[IFLA_BR_MCAST_QUERY_INTVL]) { 1031 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); 1032 1033 br->multicast_query_interval = clock_t_to_jiffies(val); 1034 } 1035 1036 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { 1037 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); 1038 1039 br->multicast_query_response_interval = clock_t_to_jiffies(val); 1040 } 1041 1042 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { 1043 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); 1044 1045 br->multicast_startup_query_interval = clock_t_to_jiffies(val); 1046 } 1047#endif 1048#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1049 if (data[IFLA_BR_NF_CALL_IPTABLES]) { 1050 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); 1051 1052 br->nf_call_iptables = val ? true : false; 1053 } 1054 1055 if (data[IFLA_BR_NF_CALL_IP6TABLES]) { 1056 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); 1057 1058 br->nf_call_ip6tables = val ? true : false; 1059 } 1060 1061 if (data[IFLA_BR_NF_CALL_ARPTABLES]) { 1062 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); 1063 1064 br->nf_call_arptables = val ? true : false; 1065 } 1066#endif 1067 1068 return 0; 1069} 1070 1071static size_t br_get_size(const struct net_device *brdev) 1072{ 1073 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ 1074 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ 1075 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ 1076 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ 1077 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ 1078 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ 1079 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ 1080#ifdef CONFIG_BRIDGE_VLAN_FILTERING 1081 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ 1082 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ 1083#endif 1084 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ 1085 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ 1086 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ 1087 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ 1088 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ 1089 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ 1090 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ 1091 nla_total_size(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ 1092 nla_total_size(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ 1093 nla_total_size(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ 1094 nla_total_size(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ 1095 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ 1096#ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1097 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ 1098 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ 1099 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ 1100 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ 1101 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ 1102 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ 1103 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ 1104 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ 1105 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ 1106 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ 1107 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ 1108 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ 1109 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ 1110 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ 1111#endif 1112#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1113 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ 1114 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ 1115 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ 1116#endif 1117 0; 1118} 1119 1120static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) 1121{ 1122 struct net_bridge *br = netdev_priv(brdev); 1123 u32 forward_delay = jiffies_to_clock_t(br->forward_delay); 1124 u32 hello_time = jiffies_to_clock_t(br->hello_time); 1125 u32 age_time = jiffies_to_clock_t(br->max_age); 1126 u32 ageing_time = jiffies_to_clock_t(br->ageing_time); 1127 u32 stp_enabled = br->stp_enabled; 1128 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; 1129 u8 vlan_enabled = br_vlan_enabled(br); 1130 u64 clockval; 1131 1132 clockval = br_timer_value(&br->hello_timer); 1133 if (nla_put_u64(skb, IFLA_BR_HELLO_TIMER, clockval)) 1134 return -EMSGSIZE; 1135 clockval = br_timer_value(&br->tcn_timer); 1136 if (nla_put_u64(skb, IFLA_BR_TCN_TIMER, clockval)) 1137 return -EMSGSIZE; 1138 clockval = br_timer_value(&br->topology_change_timer); 1139 if (nla_put_u64(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval)) 1140 return -EMSGSIZE; 1141 clockval = br_timer_value(&br->gc_timer); 1142 if (nla_put_u64(skb, IFLA_BR_GC_TIMER, clockval)) 1143 return -EMSGSIZE; 1144 1145 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || 1146 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || 1147 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || 1148 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || 1149 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || 1150 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || 1151 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || 1152 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || 1153 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), 1154 &br->bridge_id) || 1155 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), 1156 &br->designated_root) || 1157 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || 1158 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || 1159 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || 1160 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, 1161 br->topology_change_detected) || 1162 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr)) 1163 return -EMSGSIZE; 1164 1165#ifdef CONFIG_BRIDGE_VLAN_FILTERING 1166 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || 1167 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid)) 1168 return -EMSGSIZE; 1169#endif 1170#ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1171 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || 1172 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) || 1173 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, 1174 br->multicast_query_use_ifaddr) || 1175 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) || 1176 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, 1177 br->hash_elasticity) || 1178 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || 1179 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, 1180 br->multicast_last_member_count) || 1181 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, 1182 br->multicast_startup_query_count)) 1183 return -EMSGSIZE; 1184 1185 clockval = jiffies_to_clock_t(br->multicast_last_member_interval); 1186 if (nla_put_u64(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval)) 1187 return -EMSGSIZE; 1188 clockval = jiffies_to_clock_t(br->multicast_membership_interval); 1189 if (nla_put_u64(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval)) 1190 return -EMSGSIZE; 1191 clockval = jiffies_to_clock_t(br->multicast_querier_interval); 1192 if (nla_put_u64(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval)) 1193 return -EMSGSIZE; 1194 clockval = jiffies_to_clock_t(br->multicast_query_interval); 1195 if (nla_put_u64(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval)) 1196 return -EMSGSIZE; 1197 clockval = jiffies_to_clock_t(br->multicast_query_response_interval); 1198 if (nla_put_u64(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval)) 1199 return -EMSGSIZE; 1200 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); 1201 if (nla_put_u64(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval)) 1202 return -EMSGSIZE; 1203#endif 1204#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1205 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, 1206 br->nf_call_iptables ? 1 : 0) || 1207 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, 1208 br->nf_call_ip6tables ? 1 : 0) || 1209 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, 1210 br->nf_call_arptables ? 1 : 0)) 1211 return -EMSGSIZE; 1212#endif 1213 1214 return 0; 1215} 1216 1217 1218static struct rtnl_af_ops br_af_ops __read_mostly = { 1219 .family = AF_BRIDGE, 1220 .get_link_af_size = br_get_link_af_size_filtered, 1221}; 1222 1223struct rtnl_link_ops br_link_ops __read_mostly = { 1224 .kind = "bridge", 1225 .priv_size = sizeof(struct net_bridge), 1226 .setup = br_dev_setup, 1227 .maxtype = IFLA_BR_MAX, 1228 .policy = br_policy, 1229 .validate = br_validate, 1230 .newlink = br_dev_newlink, 1231 .changelink = br_changelink, 1232 .dellink = br_dev_delete, 1233 .get_size = br_get_size, 1234 .fill_info = br_fill_info, 1235 1236 .slave_maxtype = IFLA_BRPORT_MAX, 1237 .slave_policy = br_port_policy, 1238 .slave_changelink = br_port_slave_changelink, 1239 .get_slave_size = br_port_get_slave_size, 1240 .fill_slave_info = br_port_fill_slave_info, 1241}; 1242 1243int __init br_netlink_init(void) 1244{ 1245 int err; 1246 1247 br_mdb_init(); 1248 rtnl_af_register(&br_af_ops); 1249 1250 err = rtnl_link_register(&br_link_ops); 1251 if (err) 1252 goto out_af; 1253 1254 return 0; 1255 1256out_af: 1257 rtnl_af_unregister(&br_af_ops); 1258 br_mdb_uninit(); 1259 return err; 1260} 1261 1262void br_netlink_fini(void) 1263{ 1264 br_mdb_uninit(); 1265 rtnl_af_unregister(&br_af_ops); 1266 rtnl_link_unregister(&br_link_ops); 1267} 1268