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