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_cfm.h" 20 #include "br_private_tunnel.h" 21 22 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg, 23 u32 filter_mask) 24 { 25 struct net_bridge_vlan *v; 26 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; 27 u16 flags, pvid; 28 int num_vlans = 0; 29 30 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) 31 return 0; 32 33 pvid = br_get_pvid(vg); 34 /* Count number of vlan infos */ 35 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 36 flags = 0; 37 /* only a context, bridge vlan not activated */ 38 if (!br_vlan_should_use(v)) 39 continue; 40 if (v->vid == pvid) 41 flags |= BRIDGE_VLAN_INFO_PVID; 42 43 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 44 flags |= BRIDGE_VLAN_INFO_UNTAGGED; 45 46 if (vid_range_start == 0) { 47 goto initvars; 48 } else if ((v->vid - vid_range_end) == 1 && 49 flags == vid_range_flags) { 50 vid_range_end = v->vid; 51 continue; 52 } else { 53 if ((vid_range_end - vid_range_start) > 0) 54 num_vlans += 2; 55 else 56 num_vlans += 1; 57 } 58 initvars: 59 vid_range_start = v->vid; 60 vid_range_end = v->vid; 61 vid_range_flags = flags; 62 } 63 64 if (vid_range_start != 0) { 65 if ((vid_range_end - vid_range_start) > 0) 66 num_vlans += 2; 67 else 68 num_vlans += 1; 69 } 70 71 return num_vlans; 72 } 73 74 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg, 75 u32 filter_mask) 76 { 77 int num_vlans; 78 79 if (!vg) 80 return 0; 81 82 if (filter_mask & RTEXT_FILTER_BRVLAN) 83 return vg->num_vlans; 84 85 rcu_read_lock(); 86 num_vlans = __get_num_vlan_infos(vg, filter_mask); 87 rcu_read_unlock(); 88 89 return num_vlans; 90 } 91 92 static size_t br_get_link_af_size_filtered(const struct net_device *dev, 93 u32 filter_mask) 94 { 95 struct net_bridge_vlan_group *vg = NULL; 96 struct net_bridge_port *p = NULL; 97 struct net_bridge *br = NULL; 98 u32 num_cfm_peer_mep_infos; 99 u32 num_cfm_mep_infos; 100 size_t vinfo_sz = 0; 101 int num_vlan_infos; 102 103 rcu_read_lock(); 104 if (netif_is_bridge_port(dev)) { 105 p = br_port_get_rcu(dev); 106 vg = nbp_vlan_group_rcu(p); 107 } else if (dev->priv_flags & IFF_EBRIDGE) { 108 br = netdev_priv(dev); 109 vg = br_vlan_group_rcu(br); 110 } 111 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask); 112 rcu_read_unlock(); 113 114 if (p && (p->flags & BR_VLAN_TUNNEL)) 115 vinfo_sz += br_get_vlan_tunnel_info_size(vg); 116 117 /* Each VLAN is returned in bridge_vlan_info along with flags */ 118 vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); 119 120 if (!(filter_mask & RTEXT_FILTER_CFM_STATUS)) 121 return vinfo_sz; 122 123 if (!br) 124 return vinfo_sz; 125 126 /* CFM status info must be added */ 127 br_cfm_mep_count(br, &num_cfm_mep_infos); 128 br_cfm_peer_mep_count(br, &num_cfm_peer_mep_infos); 129 130 vinfo_sz += nla_total_size(0); /* IFLA_BRIDGE_CFM */ 131 /* For each status struct the MEP instance (u32) is added */ 132 /* MEP instance (u32) + br_cfm_mep_status */ 133 vinfo_sz += num_cfm_mep_infos * 134 /*IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE */ 135 (nla_total_size(sizeof(u32)) 136 /* IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN */ 137 + nla_total_size(sizeof(u32)) 138 /* IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN */ 139 + nla_total_size(sizeof(u32)) 140 /* IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN */ 141 + nla_total_size(sizeof(u32))); 142 /* MEP instance (u32) + br_cfm_cc_peer_status */ 143 vinfo_sz += num_cfm_peer_mep_infos * 144 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE */ 145 (nla_total_size(sizeof(u32)) 146 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID */ 147 + nla_total_size(sizeof(u32)) 148 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT */ 149 + nla_total_size(sizeof(u32)) 150 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI */ 151 + nla_total_size(sizeof(u32)) 152 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE */ 153 + nla_total_size(sizeof(u8)) 154 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE */ 155 + nla_total_size(sizeof(u8)) 156 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN */ 157 + nla_total_size(sizeof(u32)) 158 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN */ 159 + nla_total_size(sizeof(u32)) 160 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN */ 161 + nla_total_size(sizeof(u32))); 162 163 return vinfo_sz; 164 } 165 166 static inline size_t br_port_info_size(void) 167 { 168 return nla_total_size(1) /* IFLA_BRPORT_STATE */ 169 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ 170 + nla_total_size(4) /* IFLA_BRPORT_COST */ 171 + nla_total_size(1) /* IFLA_BRPORT_MODE */ 172 + nla_total_size(1) /* IFLA_BRPORT_GUARD */ 173 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ 174 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ 175 + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */ 176 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ 177 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ 178 + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */ 179 + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */ 180 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */ 181 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */ 182 + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */ 183 + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */ 184 + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */ 185 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */ 186 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */ 187 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */ 188 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */ 189 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */ 190 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */ 191 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */ 192 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */ 193 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */ 194 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */ 195 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */ 196 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 197 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */ 198 #endif 199 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */ 200 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_RING_OPEN */ 201 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_IN_OPEN */ 202 + 0; 203 } 204 205 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) 206 { 207 return NLMSG_ALIGN(sizeof(struct ifinfomsg)) 208 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ 209 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ 210 + nla_total_size(4) /* IFLA_MASTER */ 211 + nla_total_size(4) /* IFLA_MTU */ 212 + nla_total_size(4) /* IFLA_LINK */ 213 + nla_total_size(1) /* IFLA_OPERSTATE */ 214 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ 215 + nla_total_size(br_get_link_af_size_filtered(dev, 216 filter_mask)) /* IFLA_AF_SPEC */ 217 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */ 218 } 219 220 static int br_port_fill_attrs(struct sk_buff *skb, 221 const struct net_bridge_port *p) 222 { 223 u8 mode = !!(p->flags & BR_HAIRPIN_MODE); 224 struct net_bridge_port *backup_p; 225 u64 timerval; 226 227 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || 228 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || 229 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || 230 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || 231 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || 232 nla_put_u8(skb, IFLA_BRPORT_PROTECT, 233 !!(p->flags & BR_ROOT_BLOCK)) || 234 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, 235 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || 236 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST, 237 !!(p->flags & BR_MULTICAST_TO_UNICAST)) || 238 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || 239 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, 240 !!(p->flags & BR_FLOOD)) || 241 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD, 242 !!(p->flags & BR_MCAST_FLOOD)) || 243 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD, 244 !!(p->flags & BR_BCAST_FLOOD)) || 245 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || 246 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, 247 !!(p->flags & BR_PROXYARP_WIFI)) || 248 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id), 249 &p->designated_root) || 250 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id), 251 &p->designated_bridge) || 252 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) || 253 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) || 254 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) || 255 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) || 256 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, 257 p->topology_change_ack) || 258 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) || 259 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags & 260 BR_VLAN_TUNNEL)) || 261 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) || 262 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS, 263 !!(p->flags & BR_NEIGH_SUPPRESS)) || 264 nla_put_u8(skb, IFLA_BRPORT_MRP_RING_OPEN, !!(p->flags & 265 BR_MRP_LOST_CONT)) || 266 nla_put_u8(skb, IFLA_BRPORT_MRP_IN_OPEN, 267 !!(p->flags & BR_MRP_LOST_IN_CONT)) || 268 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED))) 269 return -EMSGSIZE; 270 271 timerval = br_timer_value(&p->message_age_timer); 272 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval, 273 IFLA_BRPORT_PAD)) 274 return -EMSGSIZE; 275 timerval = br_timer_value(&p->forward_delay_timer); 276 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval, 277 IFLA_BRPORT_PAD)) 278 return -EMSGSIZE; 279 timerval = br_timer_value(&p->hold_timer); 280 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval, 281 IFLA_BRPORT_PAD)) 282 return -EMSGSIZE; 283 284 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 285 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER, 286 p->multicast_router)) 287 return -EMSGSIZE; 288 #endif 289 290 /* we might be called only with br->lock */ 291 rcu_read_lock(); 292 backup_p = rcu_dereference(p->backup_port); 293 if (backup_p) 294 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT, 295 backup_p->dev->ifindex); 296 rcu_read_unlock(); 297 298 return 0; 299 } 300 301 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, 302 u16 vid_end, u16 flags) 303 { 304 struct bridge_vlan_info vinfo; 305 306 if ((vid_end - vid_start) > 0) { 307 /* add range to skb */ 308 vinfo.vid = vid_start; 309 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; 310 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 311 sizeof(vinfo), &vinfo)) 312 goto nla_put_failure; 313 314 vinfo.vid = vid_end; 315 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; 316 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 317 sizeof(vinfo), &vinfo)) 318 goto nla_put_failure; 319 } else { 320 vinfo.vid = vid_start; 321 vinfo.flags = flags; 322 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 323 sizeof(vinfo), &vinfo)) 324 goto nla_put_failure; 325 } 326 327 return 0; 328 329 nla_put_failure: 330 return -EMSGSIZE; 331 } 332 333 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, 334 struct net_bridge_vlan_group *vg) 335 { 336 struct net_bridge_vlan *v; 337 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; 338 u16 flags, pvid; 339 int err = 0; 340 341 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan 342 * and mark vlan info with begin and end flags 343 * if vlaninfo represents a range 344 */ 345 pvid = br_get_pvid(vg); 346 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 347 flags = 0; 348 if (!br_vlan_should_use(v)) 349 continue; 350 if (v->vid == pvid) 351 flags |= BRIDGE_VLAN_INFO_PVID; 352 353 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 354 flags |= BRIDGE_VLAN_INFO_UNTAGGED; 355 356 if (vid_range_start == 0) { 357 goto initvars; 358 } else if ((v->vid - vid_range_end) == 1 && 359 flags == vid_range_flags) { 360 vid_range_end = v->vid; 361 continue; 362 } else { 363 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 364 vid_range_end, 365 vid_range_flags); 366 if (err) 367 return err; 368 } 369 370 initvars: 371 vid_range_start = v->vid; 372 vid_range_end = v->vid; 373 vid_range_flags = flags; 374 } 375 376 if (vid_range_start != 0) { 377 /* Call it once more to send any left over vlans */ 378 err = br_fill_ifvlaninfo_range(skb, vid_range_start, 379 vid_range_end, 380 vid_range_flags); 381 if (err) 382 return err; 383 } 384 385 return 0; 386 } 387 388 static int br_fill_ifvlaninfo(struct sk_buff *skb, 389 struct net_bridge_vlan_group *vg) 390 { 391 struct bridge_vlan_info vinfo; 392 struct net_bridge_vlan *v; 393 u16 pvid; 394 395 pvid = br_get_pvid(vg); 396 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 397 if (!br_vlan_should_use(v)) 398 continue; 399 400 vinfo.vid = v->vid; 401 vinfo.flags = 0; 402 if (v->vid == pvid) 403 vinfo.flags |= BRIDGE_VLAN_INFO_PVID; 404 405 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 406 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; 407 408 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, 409 sizeof(vinfo), &vinfo)) 410 goto nla_put_failure; 411 } 412 413 return 0; 414 415 nla_put_failure: 416 return -EMSGSIZE; 417 } 418 419 /* 420 * Create one netlink message for one interface 421 * Contains port and master info as well as carrier and bridge state. 422 */ 423 static int br_fill_ifinfo(struct sk_buff *skb, 424 const struct net_bridge_port *port, 425 u32 pid, u32 seq, int event, unsigned int flags, 426 u32 filter_mask, const struct net_device *dev, 427 bool getlink) 428 { 429 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; 430 struct nlattr *af = NULL; 431 struct net_bridge *br; 432 struct ifinfomsg *hdr; 433 struct nlmsghdr *nlh; 434 435 if (port) 436 br = port->br; 437 else 438 br = netdev_priv(dev); 439 440 br_debug(br, "br_fill_info event %d port %s master %s\n", 441 event, dev->name, br->dev->name); 442 443 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); 444 if (nlh == NULL) 445 return -EMSGSIZE; 446 447 hdr = nlmsg_data(nlh); 448 hdr->ifi_family = AF_BRIDGE; 449 hdr->__ifi_pad = 0; 450 hdr->ifi_type = dev->type; 451 hdr->ifi_index = dev->ifindex; 452 hdr->ifi_flags = dev_get_flags(dev); 453 hdr->ifi_change = 0; 454 455 if (nla_put_string(skb, IFLA_IFNAME, dev->name) || 456 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || 457 nla_put_u32(skb, IFLA_MTU, dev->mtu) || 458 nla_put_u8(skb, IFLA_OPERSTATE, operstate) || 459 (dev->addr_len && 460 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || 461 (dev->ifindex != dev_get_iflink(dev) && 462 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) 463 goto nla_put_failure; 464 465 if (event == RTM_NEWLINK && port) { 466 struct nlattr *nest; 467 468 nest = nla_nest_start(skb, IFLA_PROTINFO); 469 if (nest == NULL || br_port_fill_attrs(skb, port) < 0) 470 goto nla_put_failure; 471 nla_nest_end(skb, nest); 472 } 473 474 if (filter_mask & (RTEXT_FILTER_BRVLAN | 475 RTEXT_FILTER_BRVLAN_COMPRESSED | 476 RTEXT_FILTER_MRP | 477 RTEXT_FILTER_CFM_CONFIG | 478 RTEXT_FILTER_CFM_STATUS)) { 479 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC); 480 if (!af) 481 goto nla_put_failure; 482 } 483 484 /* Check if the VID information is requested */ 485 if ((filter_mask & RTEXT_FILTER_BRVLAN) || 486 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { 487 struct net_bridge_vlan_group *vg; 488 int err; 489 490 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */ 491 rcu_read_lock(); 492 if (port) 493 vg = nbp_vlan_group_rcu(port); 494 else 495 vg = br_vlan_group_rcu(br); 496 497 if (!vg || !vg->num_vlans) { 498 rcu_read_unlock(); 499 goto done; 500 } 501 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) 502 err = br_fill_ifvlaninfo_compressed(skb, vg); 503 else 504 err = br_fill_ifvlaninfo(skb, vg); 505 506 if (port && (port->flags & BR_VLAN_TUNNEL)) 507 err = br_fill_vlan_tunnel_info(skb, vg); 508 rcu_read_unlock(); 509 if (err) 510 goto nla_put_failure; 511 } 512 513 if (filter_mask & RTEXT_FILTER_MRP) { 514 int err; 515 516 if (!br_mrp_enabled(br) || port) 517 goto done; 518 519 rcu_read_lock(); 520 err = br_mrp_fill_info(skb, br); 521 rcu_read_unlock(); 522 523 if (err) 524 goto nla_put_failure; 525 } 526 527 if (filter_mask & (RTEXT_FILTER_CFM_CONFIG | RTEXT_FILTER_CFM_STATUS)) { 528 struct nlattr *cfm_nest = NULL; 529 int err; 530 531 if (!br_cfm_created(br) || port) 532 goto done; 533 534 cfm_nest = nla_nest_start(skb, IFLA_BRIDGE_CFM); 535 if (!cfm_nest) 536 goto nla_put_failure; 537 538 if (filter_mask & RTEXT_FILTER_CFM_CONFIG) { 539 rcu_read_lock(); 540 err = br_cfm_config_fill_info(skb, br); 541 rcu_read_unlock(); 542 if (err) 543 goto nla_put_failure; 544 } 545 546 if (filter_mask & RTEXT_FILTER_CFM_STATUS) { 547 rcu_read_lock(); 548 err = br_cfm_status_fill_info(skb, br, getlink); 549 rcu_read_unlock(); 550 if (err) 551 goto nla_put_failure; 552 } 553 554 nla_nest_end(skb, cfm_nest); 555 } 556 557 done: 558 if (af) 559 nla_nest_end(skb, af); 560 nlmsg_end(skb, nlh); 561 return 0; 562 563 nla_put_failure: 564 nlmsg_cancel(skb, nlh); 565 return -EMSGSIZE; 566 } 567 568 void br_info_notify(int event, const struct net_bridge *br, 569 const struct net_bridge_port *port, u32 filter) 570 { 571 struct net_device *dev; 572 struct sk_buff *skb; 573 int err = -ENOBUFS; 574 struct net *net; 575 u16 port_no = 0; 576 577 if (WARN_ON(!port && !br)) 578 return; 579 580 if (port) { 581 dev = port->dev; 582 br = port->br; 583 port_no = port->port_no; 584 } else { 585 dev = br->dev; 586 } 587 588 net = dev_net(dev); 589 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event); 590 591 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC); 592 if (skb == NULL) 593 goto errout; 594 595 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev, false); 596 if (err < 0) { 597 /* -EMSGSIZE implies BUG in br_nlmsg_size() */ 598 WARN_ON(err == -EMSGSIZE); 599 kfree_skb(skb); 600 goto errout; 601 } 602 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); 603 return; 604 errout: 605 rtnl_set_sk_err(net, RTNLGRP_LINK, err); 606 } 607 608 /* Notify listeners of a change in bridge or port information */ 609 void br_ifinfo_notify(int event, const struct net_bridge *br, 610 const struct net_bridge_port *port) 611 { 612 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; 613 614 return br_info_notify(event, br, port, filter); 615 } 616 617 /* 618 * Dump information about all ports, in response to GETLINK 619 */ 620 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, 621 struct net_device *dev, u32 filter_mask, int nlflags) 622 { 623 struct net_bridge_port *port = br_port_get_rtnl(dev); 624 625 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && 626 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) && 627 !(filter_mask & RTEXT_FILTER_MRP) && 628 !(filter_mask & RTEXT_FILTER_CFM_CONFIG) && 629 !(filter_mask & RTEXT_FILTER_CFM_STATUS)) 630 return 0; 631 632 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, 633 filter_mask, dev, true); 634 } 635 636 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, 637 int cmd, struct bridge_vlan_info *vinfo, bool *changed, 638 struct netlink_ext_ack *extack) 639 { 640 bool curr_change; 641 int err = 0; 642 643 switch (cmd) { 644 case RTM_SETLINK: 645 if (p) { 646 /* if the MASTER flag is set this will act on the global 647 * per-VLAN entry as well 648 */ 649 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags, 650 &curr_change, extack); 651 } else { 652 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; 653 err = br_vlan_add(br, vinfo->vid, vinfo->flags, 654 &curr_change, extack); 655 } 656 if (curr_change) 657 *changed = true; 658 break; 659 660 case RTM_DELLINK: 661 if (p) { 662 if (!nbp_vlan_delete(p, vinfo->vid)) 663 *changed = true; 664 665 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) && 666 !br_vlan_delete(p->br, vinfo->vid)) 667 *changed = true; 668 } else if (!br_vlan_delete(br, vinfo->vid)) { 669 *changed = true; 670 } 671 break; 672 } 673 674 return err; 675 } 676 677 int br_process_vlan_info(struct net_bridge *br, 678 struct net_bridge_port *p, int cmd, 679 struct bridge_vlan_info *vinfo_curr, 680 struct bridge_vlan_info **vinfo_last, 681 bool *changed, 682 struct netlink_ext_ack *extack) 683 { 684 int err, rtm_cmd; 685 686 if (!br_vlan_valid_id(vinfo_curr->vid, extack)) 687 return -EINVAL; 688 689 /* needed for vlan-only NEWVLAN/DELVLAN notifications */ 690 rtm_cmd = br_afspec_cmd_to_rtm(cmd); 691 692 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 693 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) 694 return -EINVAL; 695 *vinfo_last = vinfo_curr; 696 return 0; 697 } 698 699 if (*vinfo_last) { 700 struct bridge_vlan_info tmp_vinfo; 701 int v, v_change_start = 0; 702 703 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) 704 return -EINVAL; 705 706 memcpy(&tmp_vinfo, *vinfo_last, 707 sizeof(struct bridge_vlan_info)); 708 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) { 709 bool curr_change = false; 710 711 tmp_vinfo.vid = v; 712 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change, 713 extack); 714 if (err) 715 break; 716 if (curr_change) { 717 *changed = curr_change; 718 if (!v_change_start) 719 v_change_start = v; 720 } else { 721 /* nothing to notify yet */ 722 if (!v_change_start) 723 continue; 724 br_vlan_notify(br, p, v_change_start, 725 v - 1, rtm_cmd); 726 v_change_start = 0; 727 } 728 cond_resched(); 729 } 730 /* v_change_start is set only if the last/whole range changed */ 731 if (v_change_start) 732 br_vlan_notify(br, p, v_change_start, 733 v - 1, rtm_cmd); 734 735 *vinfo_last = NULL; 736 737 return err; 738 } 739 740 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack); 741 if (*changed) 742 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd); 743 744 return err; 745 } 746 747 static int br_afspec(struct net_bridge *br, 748 struct net_bridge_port *p, 749 struct nlattr *af_spec, 750 int cmd, bool *changed, 751 struct netlink_ext_ack *extack) 752 { 753 struct bridge_vlan_info *vinfo_curr = NULL; 754 struct bridge_vlan_info *vinfo_last = NULL; 755 struct nlattr *attr; 756 struct vtunnel_info tinfo_last = {}; 757 struct vtunnel_info tinfo_curr = {}; 758 int err = 0, rem; 759 760 nla_for_each_nested(attr, af_spec, rem) { 761 err = 0; 762 switch (nla_type(attr)) { 763 case IFLA_BRIDGE_VLAN_TUNNEL_INFO: 764 if (!p || !(p->flags & BR_VLAN_TUNNEL)) 765 return -EINVAL; 766 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr); 767 if (err) 768 return err; 769 err = br_process_vlan_tunnel_info(br, p, cmd, 770 &tinfo_curr, 771 &tinfo_last, 772 changed); 773 if (err) 774 return err; 775 break; 776 case IFLA_BRIDGE_VLAN_INFO: 777 if (nla_len(attr) != sizeof(struct bridge_vlan_info)) 778 return -EINVAL; 779 vinfo_curr = nla_data(attr); 780 err = br_process_vlan_info(br, p, cmd, vinfo_curr, 781 &vinfo_last, changed, 782 extack); 783 if (err) 784 return err; 785 break; 786 case IFLA_BRIDGE_MRP: 787 err = br_mrp_parse(br, p, attr, cmd, extack); 788 if (err) 789 return err; 790 break; 791 case IFLA_BRIDGE_CFM: 792 err = br_cfm_parse(br, p, attr, cmd, extack); 793 if (err) 794 return err; 795 break; 796 } 797 } 798 799 return err; 800 } 801 802 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { 803 [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, 804 [IFLA_BRPORT_COST] = { .type = NLA_U32 }, 805 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, 806 [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, 807 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, 808 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, 809 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, 810 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, 811 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, 812 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, 813 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, 814 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, 815 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 }, 816 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 }, 817 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 }, 818 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 }, 819 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 }, 820 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 }, 821 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 }, 822 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 }, 823 }; 824 825 /* Change the state of the port and notify spanning tree */ 826 static int br_set_port_state(struct net_bridge_port *p, u8 state) 827 { 828 if (state > BR_STATE_BLOCKING) 829 return -EINVAL; 830 831 /* if kernel STP is running, don't allow changes */ 832 if (p->br->stp_enabled == BR_KERNEL_STP) 833 return -EBUSY; 834 835 /* if device is not up, change is not allowed 836 * if link is not present, only allowable state is disabled 837 */ 838 if (!netif_running(p->dev) || 839 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) 840 return -ENETDOWN; 841 842 br_set_state(p, state); 843 br_port_state_selection(p->br); 844 return 0; 845 } 846 847 /* Set/clear or port flags based on attribute */ 848 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], 849 int attrtype, unsigned long mask) 850 { 851 unsigned long flags; 852 int err; 853 854 if (!tb[attrtype]) 855 return 0; 856 857 if (nla_get_u8(tb[attrtype])) 858 flags = p->flags | mask; 859 else 860 flags = p->flags & ~mask; 861 862 err = br_switchdev_set_port_flag(p, flags, mask); 863 if (err) 864 return err; 865 866 p->flags = flags; 867 return 0; 868 } 869 870 /* Process bridge protocol info on port */ 871 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) 872 { 873 unsigned long old_flags = p->flags; 874 bool br_vlan_tunnel_old = false; 875 int err; 876 877 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); 878 if (err) 879 return err; 880 881 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); 882 if (err) 883 return err; 884 885 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); 886 if (err) 887 return err; 888 889 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); 890 if (err) 891 return err; 892 893 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); 894 if (err) 895 return err; 896 897 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); 898 if (err) 899 return err; 900 901 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); 902 if (err) 903 return err; 904 905 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); 906 if (err) 907 return err; 908 909 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); 910 if (err) 911 return err; 912 913 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); 914 if (err) 915 return err; 916 917 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); 918 if (err) 919 return err; 920 921 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; 922 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); 923 if (err) 924 return err; 925 926 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) 927 nbp_vlan_tunnel_info_flush(p); 928 929 if (tb[IFLA_BRPORT_COST]) { 930 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); 931 if (err) 932 return err; 933 } 934 935 if (tb[IFLA_BRPORT_PRIORITY]) { 936 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); 937 if (err) 938 return err; 939 } 940 941 if (tb[IFLA_BRPORT_STATE]) { 942 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); 943 if (err) 944 return err; 945 } 946 947 if (tb[IFLA_BRPORT_FLUSH]) 948 br_fdb_delete_by_port(p->br, p, 0, 0); 949 950 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 951 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { 952 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); 953 954 err = br_multicast_set_port_router(p, mcast_router); 955 if (err) 956 return err; 957 } 958 #endif 959 960 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) { 961 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]); 962 963 if (fwd_mask & BR_GROUPFWD_MACPAUSE) 964 return -EINVAL; 965 p->group_fwd_mask = fwd_mask; 966 } 967 968 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, 969 BR_NEIGH_SUPPRESS); 970 if (err) 971 return err; 972 973 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); 974 if (err) 975 return err; 976 977 if (tb[IFLA_BRPORT_BACKUP_PORT]) { 978 struct net_device *backup_dev = NULL; 979 u32 backup_ifindex; 980 981 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]); 982 if (backup_ifindex) { 983 backup_dev = __dev_get_by_index(dev_net(p->dev), 984 backup_ifindex); 985 if (!backup_dev) 986 return -ENOENT; 987 } 988 989 err = nbp_backup_change(p, backup_dev); 990 if (err) 991 return err; 992 } 993 994 br_port_flags_change(p, old_flags ^ p->flags); 995 return 0; 996 } 997 998 /* Change state and parameters on port. */ 999 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, 1000 struct netlink_ext_ack *extack) 1001 { 1002 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 1003 struct nlattr *tb[IFLA_BRPORT_MAX + 1]; 1004 struct net_bridge_port *p; 1005 struct nlattr *protinfo; 1006 struct nlattr *afspec; 1007 bool changed = false; 1008 int err = 0; 1009 1010 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); 1011 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 1012 if (!protinfo && !afspec) 1013 return 0; 1014 1015 p = br_port_get_rtnl(dev); 1016 /* We want to accept dev as bridge itself if the AF_SPEC 1017 * is set to see if someone is setting vlan info on the bridge 1018 */ 1019 if (!p && !afspec) 1020 return -EINVAL; 1021 1022 if (p && protinfo) { 1023 if (protinfo->nla_type & NLA_F_NESTED) { 1024 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX, 1025 protinfo, 1026 br_port_policy, 1027 NULL); 1028 if (err) 1029 return err; 1030 1031 spin_lock_bh(&p->br->lock); 1032 err = br_setport(p, tb); 1033 spin_unlock_bh(&p->br->lock); 1034 } else { 1035 /* Binary compatibility with old RSTP */ 1036 if (nla_len(protinfo) < sizeof(u8)) 1037 return -EINVAL; 1038 1039 spin_lock_bh(&p->br->lock); 1040 err = br_set_port_state(p, nla_get_u8(protinfo)); 1041 spin_unlock_bh(&p->br->lock); 1042 } 1043 if (err) 1044 goto out; 1045 changed = true; 1046 } 1047 1048 if (afspec) 1049 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack); 1050 1051 if (changed) 1052 br_ifinfo_notify(RTM_NEWLINK, br, p); 1053 out: 1054 return err; 1055 } 1056 1057 /* Delete port information */ 1058 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) 1059 { 1060 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 1061 struct net_bridge_port *p; 1062 struct nlattr *afspec; 1063 bool changed = false; 1064 int err = 0; 1065 1066 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 1067 if (!afspec) 1068 return 0; 1069 1070 p = br_port_get_rtnl(dev); 1071 /* We want to accept dev as bridge itself as well */ 1072 if (!p && !(dev->priv_flags & IFF_EBRIDGE)) 1073 return -EINVAL; 1074 1075 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL); 1076 if (changed) 1077 /* Send RTM_NEWLINK because userspace 1078 * expects RTM_NEWLINK for vlan dels 1079 */ 1080 br_ifinfo_notify(RTM_NEWLINK, br, p); 1081 1082 return err; 1083 } 1084 1085 static int br_validate(struct nlattr *tb[], struct nlattr *data[], 1086 struct netlink_ext_ack *extack) 1087 { 1088 if (tb[IFLA_ADDRESS]) { 1089 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 1090 return -EINVAL; 1091 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 1092 return -EADDRNOTAVAIL; 1093 } 1094 1095 if (!data) 1096 return 0; 1097 1098 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1099 if (data[IFLA_BR_VLAN_PROTOCOL] && 1100 !eth_type_vlan(nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]))) 1101 return -EPROTONOSUPPORT; 1102 1103 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1104 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1105 1106 if (defpvid >= VLAN_VID_MASK) 1107 return -EINVAL; 1108 } 1109 #endif 1110 1111 return 0; 1112 } 1113 1114 static int br_port_slave_changelink(struct net_device *brdev, 1115 struct net_device *dev, 1116 struct nlattr *tb[], 1117 struct nlattr *data[], 1118 struct netlink_ext_ack *extack) 1119 { 1120 struct net_bridge *br = netdev_priv(brdev); 1121 int ret; 1122 1123 if (!data) 1124 return 0; 1125 1126 spin_lock_bh(&br->lock); 1127 ret = br_setport(br_port_get_rtnl(dev), data); 1128 spin_unlock_bh(&br->lock); 1129 1130 return ret; 1131 } 1132 1133 static int br_port_fill_slave_info(struct sk_buff *skb, 1134 const struct net_device *brdev, 1135 const struct net_device *dev) 1136 { 1137 return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); 1138 } 1139 1140 static size_t br_port_get_slave_size(const struct net_device *brdev, 1141 const struct net_device *dev) 1142 { 1143 return br_port_info_size(); 1144 } 1145 1146 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { 1147 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, 1148 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, 1149 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, 1150 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, 1151 [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, 1152 [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, 1153 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, 1154 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, 1155 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, 1156 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, 1157 .len = ETH_ALEN }, 1158 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, 1159 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, 1160 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, 1161 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, 1162 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, 1163 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, 1164 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 1165 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 1166 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 1167 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 1168 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 1169 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 1170 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 1171 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 1172 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, 1173 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, 1174 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, 1175 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, 1176 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, 1177 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 }, 1178 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, 1179 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 }, 1180 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 }, 1181 [IFLA_BR_MULTI_BOOLOPT] = 1182 NLA_POLICY_EXACT_LEN(sizeof(struct br_boolopt_multi)), 1183 }; 1184 1185 static int br_changelink(struct net_device *brdev, struct nlattr *tb[], 1186 struct nlattr *data[], 1187 struct netlink_ext_ack *extack) 1188 { 1189 struct net_bridge *br = netdev_priv(brdev); 1190 int err; 1191 1192 if (!data) 1193 return 0; 1194 1195 if (data[IFLA_BR_FORWARD_DELAY]) { 1196 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); 1197 if (err) 1198 return err; 1199 } 1200 1201 if (data[IFLA_BR_HELLO_TIME]) { 1202 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); 1203 if (err) 1204 return err; 1205 } 1206 1207 if (data[IFLA_BR_MAX_AGE]) { 1208 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); 1209 if (err) 1210 return err; 1211 } 1212 1213 if (data[IFLA_BR_AGEING_TIME]) { 1214 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); 1215 if (err) 1216 return err; 1217 } 1218 1219 if (data[IFLA_BR_STP_STATE]) { 1220 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); 1221 1222 err = br_stp_set_enabled(br, stp_enabled, extack); 1223 if (err) 1224 return err; 1225 } 1226 1227 if (data[IFLA_BR_PRIORITY]) { 1228 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); 1229 1230 br_stp_set_bridge_priority(br, priority); 1231 } 1232 1233 if (data[IFLA_BR_VLAN_FILTERING]) { 1234 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); 1235 1236 err = __br_vlan_filter_toggle(br, vlan_filter); 1237 if (err) 1238 return err; 1239 } 1240 1241 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1242 if (data[IFLA_BR_VLAN_PROTOCOL]) { 1243 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); 1244 1245 err = __br_vlan_set_proto(br, vlan_proto); 1246 if (err) 1247 return err; 1248 } 1249 1250 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1251 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1252 1253 err = __br_vlan_set_default_pvid(br, defpvid, extack); 1254 if (err) 1255 return err; 1256 } 1257 1258 if (data[IFLA_BR_VLAN_STATS_ENABLED]) { 1259 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); 1260 1261 err = br_vlan_set_stats(br, vlan_stats); 1262 if (err) 1263 return err; 1264 } 1265 1266 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) { 1267 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]); 1268 1269 err = br_vlan_set_stats_per_port(br, per_port); 1270 if (err) 1271 return err; 1272 } 1273 #endif 1274 1275 if (data[IFLA_BR_GROUP_FWD_MASK]) { 1276 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); 1277 1278 if (fwd_mask & BR_GROUPFWD_RESTRICTED) 1279 return -EINVAL; 1280 br->group_fwd_mask = fwd_mask; 1281 } 1282 1283 if (data[IFLA_BR_GROUP_ADDR]) { 1284 u8 new_addr[ETH_ALEN]; 1285 1286 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) 1287 return -EINVAL; 1288 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); 1289 if (!is_link_local_ether_addr(new_addr)) 1290 return -EINVAL; 1291 if (new_addr[5] == 1 || /* 802.3x Pause address */ 1292 new_addr[5] == 2 || /* 802.3ad Slow protocols */ 1293 new_addr[5] == 3) /* 802.1X PAE address */ 1294 return -EINVAL; 1295 spin_lock_bh(&br->lock); 1296 memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); 1297 spin_unlock_bh(&br->lock); 1298 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); 1299 br_recalculate_fwd_mask(br); 1300 } 1301 1302 if (data[IFLA_BR_FDB_FLUSH]) 1303 br_fdb_flush(br); 1304 1305 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1306 if (data[IFLA_BR_MCAST_ROUTER]) { 1307 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); 1308 1309 err = br_multicast_set_router(br, multicast_router); 1310 if (err) 1311 return err; 1312 } 1313 1314 if (data[IFLA_BR_MCAST_SNOOPING]) { 1315 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); 1316 1317 br_multicast_toggle(br, mcast_snooping); 1318 } 1319 1320 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { 1321 u8 val; 1322 1323 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); 1324 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); 1325 } 1326 1327 if (data[IFLA_BR_MCAST_QUERIER]) { 1328 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); 1329 1330 err = br_multicast_set_querier(br, mcast_querier); 1331 if (err) 1332 return err; 1333 } 1334 1335 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) 1336 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n", 1337 RHT_ELASTICITY); 1338 1339 if (data[IFLA_BR_MCAST_HASH_MAX]) 1340 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); 1341 1342 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { 1343 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); 1344 1345 br->multicast_last_member_count = val; 1346 } 1347 1348 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { 1349 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); 1350 1351 br->multicast_startup_query_count = val; 1352 } 1353 1354 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { 1355 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); 1356 1357 br->multicast_last_member_interval = clock_t_to_jiffies(val); 1358 } 1359 1360 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { 1361 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); 1362 1363 br->multicast_membership_interval = clock_t_to_jiffies(val); 1364 } 1365 1366 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { 1367 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); 1368 1369 br->multicast_querier_interval = clock_t_to_jiffies(val); 1370 } 1371 1372 if (data[IFLA_BR_MCAST_QUERY_INTVL]) { 1373 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); 1374 1375 br->multicast_query_interval = clock_t_to_jiffies(val); 1376 } 1377 1378 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { 1379 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); 1380 1381 br->multicast_query_response_interval = clock_t_to_jiffies(val); 1382 } 1383 1384 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { 1385 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); 1386 1387 br->multicast_startup_query_interval = clock_t_to_jiffies(val); 1388 } 1389 1390 if (data[IFLA_BR_MCAST_STATS_ENABLED]) { 1391 __u8 mcast_stats; 1392 1393 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]); 1394 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats); 1395 } 1396 1397 if (data[IFLA_BR_MCAST_IGMP_VERSION]) { 1398 __u8 igmp_version; 1399 1400 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]); 1401 err = br_multicast_set_igmp_version(br, igmp_version); 1402 if (err) 1403 return err; 1404 } 1405 1406 #if IS_ENABLED(CONFIG_IPV6) 1407 if (data[IFLA_BR_MCAST_MLD_VERSION]) { 1408 __u8 mld_version; 1409 1410 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]); 1411 err = br_multicast_set_mld_version(br, mld_version); 1412 if (err) 1413 return err; 1414 } 1415 #endif 1416 #endif 1417 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1418 if (data[IFLA_BR_NF_CALL_IPTABLES]) { 1419 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); 1420 1421 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); 1422 } 1423 1424 if (data[IFLA_BR_NF_CALL_IP6TABLES]) { 1425 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); 1426 1427 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); 1428 } 1429 1430 if (data[IFLA_BR_NF_CALL_ARPTABLES]) { 1431 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); 1432 1433 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); 1434 } 1435 #endif 1436 1437 if (data[IFLA_BR_MULTI_BOOLOPT]) { 1438 struct br_boolopt_multi *bm; 1439 1440 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]); 1441 err = br_boolopt_multi_toggle(br, bm, extack); 1442 if (err) 1443 return err; 1444 } 1445 1446 return 0; 1447 } 1448 1449 static int br_dev_newlink(struct net *src_net, struct net_device *dev, 1450 struct nlattr *tb[], struct nlattr *data[], 1451 struct netlink_ext_ack *extack) 1452 { 1453 struct net_bridge *br = netdev_priv(dev); 1454 int err; 1455 1456 err = register_netdevice(dev); 1457 if (err) 1458 return err; 1459 1460 if (tb[IFLA_ADDRESS]) { 1461 spin_lock_bh(&br->lock); 1462 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); 1463 spin_unlock_bh(&br->lock); 1464 } 1465 1466 err = br_changelink(dev, tb, data, extack); 1467 if (err) 1468 br_dev_delete(dev, NULL); 1469 1470 return err; 1471 } 1472 1473 static size_t br_get_size(const struct net_device *brdev) 1474 { 1475 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ 1476 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ 1477 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ 1478 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ 1479 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ 1480 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ 1481 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ 1482 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1483 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ 1484 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ 1485 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ 1486 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */ 1487 #endif 1488 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ 1489 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ 1490 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ 1491 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ 1492 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ 1493 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ 1494 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ 1495 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ 1496 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ 1497 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ 1498 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ 1499 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ 1500 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1501 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ 1502 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ 1503 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ 1504 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ 1505 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */ 1506 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ 1507 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ 1508 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ 1509 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ 1510 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ 1511 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ 1512 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ 1513 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ 1514 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ 1515 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ 1516 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */ 1517 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */ 1518 #endif 1519 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1520 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ 1521 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ 1522 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ 1523 #endif 1524 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */ 1525 0; 1526 } 1527 1528 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) 1529 { 1530 struct net_bridge *br = netdev_priv(brdev); 1531 u32 forward_delay = jiffies_to_clock_t(br->forward_delay); 1532 u32 hello_time = jiffies_to_clock_t(br->hello_time); 1533 u32 age_time = jiffies_to_clock_t(br->max_age); 1534 u32 ageing_time = jiffies_to_clock_t(br->ageing_time); 1535 u32 stp_enabled = br->stp_enabled; 1536 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; 1537 u8 vlan_enabled = br_vlan_enabled(br->dev); 1538 struct br_boolopt_multi bm; 1539 u64 clockval; 1540 1541 clockval = br_timer_value(&br->hello_timer); 1542 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) 1543 return -EMSGSIZE; 1544 clockval = br_timer_value(&br->tcn_timer); 1545 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) 1546 return -EMSGSIZE; 1547 clockval = br_timer_value(&br->topology_change_timer); 1548 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, 1549 IFLA_BR_PAD)) 1550 return -EMSGSIZE; 1551 clockval = br_timer_value(&br->gc_work.timer); 1552 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) 1553 return -EMSGSIZE; 1554 1555 br_boolopt_multi_get(br, &bm); 1556 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || 1557 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || 1558 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || 1559 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || 1560 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || 1561 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || 1562 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || 1563 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || 1564 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), 1565 &br->bridge_id) || 1566 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), 1567 &br->designated_root) || 1568 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || 1569 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || 1570 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || 1571 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, 1572 br->topology_change_detected) || 1573 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) || 1574 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm)) 1575 return -EMSGSIZE; 1576 1577 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1578 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || 1579 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || 1580 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, 1581 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) || 1582 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT, 1583 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT))) 1584 return -EMSGSIZE; 1585 #endif 1586 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1587 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || 1588 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, 1589 br_opt_get(br, BROPT_MULTICAST_ENABLED)) || 1590 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, 1591 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) || 1592 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, 1593 br_opt_get(br, BROPT_MULTICAST_QUERIER)) || 1594 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED, 1595 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) || 1596 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) || 1597 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || 1598 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, 1599 br->multicast_last_member_count) || 1600 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, 1601 br->multicast_startup_query_count) || 1602 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION, 1603 br->multicast_igmp_version)) 1604 return -EMSGSIZE; 1605 #if IS_ENABLED(CONFIG_IPV6) 1606 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION, 1607 br->multicast_mld_version)) 1608 return -EMSGSIZE; 1609 #endif 1610 clockval = jiffies_to_clock_t(br->multicast_last_member_interval); 1611 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, 1612 IFLA_BR_PAD)) 1613 return -EMSGSIZE; 1614 clockval = jiffies_to_clock_t(br->multicast_membership_interval); 1615 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, 1616 IFLA_BR_PAD)) 1617 return -EMSGSIZE; 1618 clockval = jiffies_to_clock_t(br->multicast_querier_interval); 1619 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, 1620 IFLA_BR_PAD)) 1621 return -EMSGSIZE; 1622 clockval = jiffies_to_clock_t(br->multicast_query_interval); 1623 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, 1624 IFLA_BR_PAD)) 1625 return -EMSGSIZE; 1626 clockval = jiffies_to_clock_t(br->multicast_query_response_interval); 1627 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, 1628 IFLA_BR_PAD)) 1629 return -EMSGSIZE; 1630 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); 1631 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, 1632 IFLA_BR_PAD)) 1633 return -EMSGSIZE; 1634 #endif 1635 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1636 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, 1637 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) || 1638 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, 1639 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) || 1640 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, 1641 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0)) 1642 return -EMSGSIZE; 1643 #endif 1644 1645 return 0; 1646 } 1647 1648 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr) 1649 { 1650 struct net_bridge_port *p = NULL; 1651 struct net_bridge_vlan_group *vg; 1652 struct net_bridge_vlan *v; 1653 struct net_bridge *br; 1654 int numvls = 0; 1655 1656 switch (attr) { 1657 case IFLA_STATS_LINK_XSTATS: 1658 br = netdev_priv(dev); 1659 vg = br_vlan_group(br); 1660 break; 1661 case IFLA_STATS_LINK_XSTATS_SLAVE: 1662 p = br_port_get_rtnl(dev); 1663 if (!p) 1664 return 0; 1665 br = p->br; 1666 vg = nbp_vlan_group(p); 1667 break; 1668 default: 1669 return 0; 1670 } 1671 1672 if (vg) { 1673 /* we need to count all, even placeholder entries */ 1674 list_for_each_entry(v, &vg->vlan_list, vlist) 1675 numvls++; 1676 } 1677 1678 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + 1679 nla_total_size(sizeof(struct br_mcast_stats)) + 1680 nla_total_size(0); 1681 } 1682 1683 static int br_fill_linkxstats(struct sk_buff *skb, 1684 const struct net_device *dev, 1685 int *prividx, int attr) 1686 { 1687 struct nlattr *nla __maybe_unused; 1688 struct net_bridge_port *p = NULL; 1689 struct net_bridge_vlan_group *vg; 1690 struct net_bridge_vlan *v; 1691 struct net_bridge *br; 1692 struct nlattr *nest; 1693 int vl_idx = 0; 1694 1695 switch (attr) { 1696 case IFLA_STATS_LINK_XSTATS: 1697 br = netdev_priv(dev); 1698 vg = br_vlan_group(br); 1699 break; 1700 case IFLA_STATS_LINK_XSTATS_SLAVE: 1701 p = br_port_get_rtnl(dev); 1702 if (!p) 1703 return 0; 1704 br = p->br; 1705 vg = nbp_vlan_group(p); 1706 break; 1707 default: 1708 return -EINVAL; 1709 } 1710 1711 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE); 1712 if (!nest) 1713 return -EMSGSIZE; 1714 1715 if (vg) { 1716 u16 pvid; 1717 1718 pvid = br_get_pvid(vg); 1719 list_for_each_entry(v, &vg->vlan_list, vlist) { 1720 struct bridge_vlan_xstats vxi; 1721 struct pcpu_sw_netstats stats; 1722 1723 if (++vl_idx < *prividx) 1724 continue; 1725 memset(&vxi, 0, sizeof(vxi)); 1726 vxi.vid = v->vid; 1727 vxi.flags = v->flags; 1728 if (v->vid == pvid) 1729 vxi.flags |= BRIDGE_VLAN_INFO_PVID; 1730 br_vlan_get_stats(v, &stats); 1731 vxi.rx_bytes = stats.rx_bytes; 1732 vxi.rx_packets = stats.rx_packets; 1733 vxi.tx_bytes = stats.tx_bytes; 1734 vxi.tx_packets = stats.tx_packets; 1735 1736 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) 1737 goto nla_put_failure; 1738 } 1739 } 1740 1741 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1742 if (++vl_idx >= *prividx) { 1743 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST, 1744 sizeof(struct br_mcast_stats), 1745 BRIDGE_XSTATS_PAD); 1746 if (!nla) 1747 goto nla_put_failure; 1748 br_multicast_get_stats(br, p, nla_data(nla)); 1749 } 1750 #endif 1751 1752 if (p) { 1753 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP, 1754 sizeof(p->stp_xstats), 1755 BRIDGE_XSTATS_PAD); 1756 if (!nla) 1757 goto nla_put_failure; 1758 1759 spin_lock_bh(&br->lock); 1760 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats)); 1761 spin_unlock_bh(&br->lock); 1762 } 1763 1764 nla_nest_end(skb, nest); 1765 *prividx = 0; 1766 1767 return 0; 1768 1769 nla_put_failure: 1770 nla_nest_end(skb, nest); 1771 *prividx = vl_idx; 1772 1773 return -EMSGSIZE; 1774 } 1775 1776 static struct rtnl_af_ops br_af_ops __read_mostly = { 1777 .family = AF_BRIDGE, 1778 .get_link_af_size = br_get_link_af_size_filtered, 1779 }; 1780 1781 struct rtnl_link_ops br_link_ops __read_mostly = { 1782 .kind = "bridge", 1783 .priv_size = sizeof(struct net_bridge), 1784 .setup = br_dev_setup, 1785 .maxtype = IFLA_BR_MAX, 1786 .policy = br_policy, 1787 .validate = br_validate, 1788 .newlink = br_dev_newlink, 1789 .changelink = br_changelink, 1790 .dellink = br_dev_delete, 1791 .get_size = br_get_size, 1792 .fill_info = br_fill_info, 1793 .fill_linkxstats = br_fill_linkxstats, 1794 .get_linkxstats_size = br_get_linkxstats_size, 1795 1796 .slave_maxtype = IFLA_BRPORT_MAX, 1797 .slave_policy = br_port_policy, 1798 .slave_changelink = br_port_slave_changelink, 1799 .get_slave_size = br_port_get_slave_size, 1800 .fill_slave_info = br_port_fill_slave_info, 1801 }; 1802 1803 int __init br_netlink_init(void) 1804 { 1805 int err; 1806 1807 br_mdb_init(); 1808 br_vlan_rtnl_init(); 1809 rtnl_af_register(&br_af_ops); 1810 1811 err = rtnl_link_register(&br_link_ops); 1812 if (err) 1813 goto out_af; 1814 1815 return 0; 1816 1817 out_af: 1818 rtnl_af_unregister(&br_af_ops); 1819 br_mdb_uninit(); 1820 return err; 1821 } 1822 1823 void br_netlink_fini(void) 1824 { 1825 br_mdb_uninit(); 1826 br_vlan_rtnl_uninit(); 1827 rtnl_af_unregister(&br_af_ops); 1828 rtnl_link_unregister(&br_link_ops); 1829 } 1830