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 (dev->priv_flags & IFF_EBRIDGE) { 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_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, mcast_router); 936 if (err) 937 return err; 938 } 939 940 if (tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]) { 941 u32 hlimit; 942 943 hlimit = nla_get_u32(tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]); 944 err = br_multicast_eht_set_hosts_limit(p, hlimit); 945 if (err) 946 return err; 947 } 948 #endif 949 950 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) { 951 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]); 952 953 if (fwd_mask & BR_GROUPFWD_MACPAUSE) 954 return -EINVAL; 955 p->group_fwd_mask = fwd_mask; 956 } 957 958 if (tb[IFLA_BRPORT_BACKUP_PORT]) { 959 struct net_device *backup_dev = NULL; 960 u32 backup_ifindex; 961 962 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]); 963 if (backup_ifindex) { 964 backup_dev = __dev_get_by_index(dev_net(p->dev), 965 backup_ifindex); 966 if (!backup_dev) 967 return -ENOENT; 968 } 969 970 err = nbp_backup_change(p, backup_dev); 971 if (err) 972 return err; 973 } 974 975 return 0; 976 } 977 978 /* Change state and parameters on port. */ 979 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, 980 struct netlink_ext_ack *extack) 981 { 982 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 983 struct nlattr *tb[IFLA_BRPORT_MAX + 1]; 984 struct net_bridge_port *p; 985 struct nlattr *protinfo; 986 struct nlattr *afspec; 987 bool changed = false; 988 int err = 0; 989 990 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); 991 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 992 if (!protinfo && !afspec) 993 return 0; 994 995 p = br_port_get_rtnl(dev); 996 /* We want to accept dev as bridge itself if the AF_SPEC 997 * is set to see if someone is setting vlan info on the bridge 998 */ 999 if (!p && !afspec) 1000 return -EINVAL; 1001 1002 if (p && protinfo) { 1003 if (protinfo->nla_type & NLA_F_NESTED) { 1004 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX, 1005 protinfo, 1006 br_port_policy, 1007 NULL); 1008 if (err) 1009 return err; 1010 1011 spin_lock_bh(&p->br->lock); 1012 err = br_setport(p, tb, extack); 1013 spin_unlock_bh(&p->br->lock); 1014 } else { 1015 /* Binary compatibility with old RSTP */ 1016 if (nla_len(protinfo) < sizeof(u8)) 1017 return -EINVAL; 1018 1019 spin_lock_bh(&p->br->lock); 1020 err = br_set_port_state(p, nla_get_u8(protinfo)); 1021 spin_unlock_bh(&p->br->lock); 1022 } 1023 if (err) 1024 goto out; 1025 changed = true; 1026 } 1027 1028 if (afspec) 1029 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack); 1030 1031 if (changed) 1032 br_ifinfo_notify(RTM_NEWLINK, br, p); 1033 out: 1034 return err; 1035 } 1036 1037 /* Delete port information */ 1038 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) 1039 { 1040 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); 1041 struct net_bridge_port *p; 1042 struct nlattr *afspec; 1043 bool changed = false; 1044 int err = 0; 1045 1046 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 1047 if (!afspec) 1048 return 0; 1049 1050 p = br_port_get_rtnl(dev); 1051 /* We want to accept dev as bridge itself as well */ 1052 if (!p && !(dev->priv_flags & IFF_EBRIDGE)) 1053 return -EINVAL; 1054 1055 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL); 1056 if (changed) 1057 /* Send RTM_NEWLINK because userspace 1058 * expects RTM_NEWLINK for vlan dels 1059 */ 1060 br_ifinfo_notify(RTM_NEWLINK, br, p); 1061 1062 return err; 1063 } 1064 1065 static int br_validate(struct nlattr *tb[], struct nlattr *data[], 1066 struct netlink_ext_ack *extack) 1067 { 1068 if (tb[IFLA_ADDRESS]) { 1069 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 1070 return -EINVAL; 1071 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 1072 return -EADDRNOTAVAIL; 1073 } 1074 1075 if (!data) 1076 return 0; 1077 1078 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1079 if (data[IFLA_BR_VLAN_PROTOCOL] && 1080 !eth_type_vlan(nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]))) 1081 return -EPROTONOSUPPORT; 1082 1083 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1084 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1085 1086 if (defpvid >= VLAN_VID_MASK) 1087 return -EINVAL; 1088 } 1089 #endif 1090 1091 return 0; 1092 } 1093 1094 static int br_port_slave_changelink(struct net_device *brdev, 1095 struct net_device *dev, 1096 struct nlattr *tb[], 1097 struct nlattr *data[], 1098 struct netlink_ext_ack *extack) 1099 { 1100 struct net_bridge *br = netdev_priv(brdev); 1101 int ret; 1102 1103 if (!data) 1104 return 0; 1105 1106 spin_lock_bh(&br->lock); 1107 ret = br_setport(br_port_get_rtnl(dev), data, extack); 1108 spin_unlock_bh(&br->lock); 1109 1110 return ret; 1111 } 1112 1113 static int br_port_fill_slave_info(struct sk_buff *skb, 1114 const struct net_device *brdev, 1115 const struct net_device *dev) 1116 { 1117 return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); 1118 } 1119 1120 static size_t br_port_get_slave_size(const struct net_device *brdev, 1121 const struct net_device *dev) 1122 { 1123 return br_port_info_size(); 1124 } 1125 1126 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { 1127 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, 1128 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, 1129 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, 1130 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, 1131 [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, 1132 [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, 1133 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, 1134 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, 1135 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, 1136 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, 1137 .len = ETH_ALEN }, 1138 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, 1139 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, 1140 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, 1141 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, 1142 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, 1143 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, 1144 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 1145 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 1146 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 1147 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 1148 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 1149 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 1150 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 1151 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 1152 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, 1153 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, 1154 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, 1155 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, 1156 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, 1157 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 }, 1158 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, 1159 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 }, 1160 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 }, 1161 [IFLA_BR_MULTI_BOOLOPT] = 1162 NLA_POLICY_EXACT_LEN(sizeof(struct br_boolopt_multi)), 1163 }; 1164 1165 static int br_changelink(struct net_device *brdev, struct nlattr *tb[], 1166 struct nlattr *data[], 1167 struct netlink_ext_ack *extack) 1168 { 1169 struct net_bridge *br = netdev_priv(brdev); 1170 int err; 1171 1172 if (!data) 1173 return 0; 1174 1175 if (data[IFLA_BR_FORWARD_DELAY]) { 1176 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); 1177 if (err) 1178 return err; 1179 } 1180 1181 if (data[IFLA_BR_HELLO_TIME]) { 1182 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); 1183 if (err) 1184 return err; 1185 } 1186 1187 if (data[IFLA_BR_MAX_AGE]) { 1188 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); 1189 if (err) 1190 return err; 1191 } 1192 1193 if (data[IFLA_BR_AGEING_TIME]) { 1194 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); 1195 if (err) 1196 return err; 1197 } 1198 1199 if (data[IFLA_BR_STP_STATE]) { 1200 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); 1201 1202 err = br_stp_set_enabled(br, stp_enabled, extack); 1203 if (err) 1204 return err; 1205 } 1206 1207 if (data[IFLA_BR_PRIORITY]) { 1208 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); 1209 1210 br_stp_set_bridge_priority(br, priority); 1211 } 1212 1213 if (data[IFLA_BR_VLAN_FILTERING]) { 1214 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); 1215 1216 err = br_vlan_filter_toggle(br, vlan_filter, extack); 1217 if (err) 1218 return err; 1219 } 1220 1221 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1222 if (data[IFLA_BR_VLAN_PROTOCOL]) { 1223 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); 1224 1225 err = __br_vlan_set_proto(br, vlan_proto, extack); 1226 if (err) 1227 return err; 1228 } 1229 1230 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { 1231 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); 1232 1233 err = __br_vlan_set_default_pvid(br, defpvid, extack); 1234 if (err) 1235 return err; 1236 } 1237 1238 if (data[IFLA_BR_VLAN_STATS_ENABLED]) { 1239 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); 1240 1241 err = br_vlan_set_stats(br, vlan_stats); 1242 if (err) 1243 return err; 1244 } 1245 1246 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) { 1247 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]); 1248 1249 err = br_vlan_set_stats_per_port(br, per_port); 1250 if (err) 1251 return err; 1252 } 1253 #endif 1254 1255 if (data[IFLA_BR_GROUP_FWD_MASK]) { 1256 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); 1257 1258 if (fwd_mask & BR_GROUPFWD_RESTRICTED) 1259 return -EINVAL; 1260 br->group_fwd_mask = fwd_mask; 1261 } 1262 1263 if (data[IFLA_BR_GROUP_ADDR]) { 1264 u8 new_addr[ETH_ALEN]; 1265 1266 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) 1267 return -EINVAL; 1268 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); 1269 if (!is_link_local_ether_addr(new_addr)) 1270 return -EINVAL; 1271 if (new_addr[5] == 1 || /* 802.3x Pause address */ 1272 new_addr[5] == 2 || /* 802.3ad Slow protocols */ 1273 new_addr[5] == 3) /* 802.1X PAE address */ 1274 return -EINVAL; 1275 spin_lock_bh(&br->lock); 1276 memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); 1277 spin_unlock_bh(&br->lock); 1278 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); 1279 br_recalculate_fwd_mask(br); 1280 } 1281 1282 if (data[IFLA_BR_FDB_FLUSH]) 1283 br_fdb_flush(br); 1284 1285 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1286 if (data[IFLA_BR_MCAST_ROUTER]) { 1287 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); 1288 1289 err = br_multicast_set_router(br, multicast_router); 1290 if (err) 1291 return err; 1292 } 1293 1294 if (data[IFLA_BR_MCAST_SNOOPING]) { 1295 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); 1296 1297 err = br_multicast_toggle(br, mcast_snooping, extack); 1298 if (err) 1299 return err; 1300 } 1301 1302 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { 1303 u8 val; 1304 1305 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); 1306 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); 1307 } 1308 1309 if (data[IFLA_BR_MCAST_QUERIER]) { 1310 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); 1311 1312 err = br_multicast_set_querier(br, mcast_querier); 1313 if (err) 1314 return err; 1315 } 1316 1317 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) 1318 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n", 1319 RHT_ELASTICITY); 1320 1321 if (data[IFLA_BR_MCAST_HASH_MAX]) 1322 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); 1323 1324 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { 1325 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); 1326 1327 br->multicast_last_member_count = val; 1328 } 1329 1330 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { 1331 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); 1332 1333 br->multicast_startup_query_count = val; 1334 } 1335 1336 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { 1337 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); 1338 1339 br->multicast_last_member_interval = clock_t_to_jiffies(val); 1340 } 1341 1342 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { 1343 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); 1344 1345 br->multicast_membership_interval = clock_t_to_jiffies(val); 1346 } 1347 1348 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { 1349 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); 1350 1351 br->multicast_querier_interval = clock_t_to_jiffies(val); 1352 } 1353 1354 if (data[IFLA_BR_MCAST_QUERY_INTVL]) { 1355 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); 1356 1357 br->multicast_query_interval = clock_t_to_jiffies(val); 1358 } 1359 1360 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { 1361 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); 1362 1363 br->multicast_query_response_interval = clock_t_to_jiffies(val); 1364 } 1365 1366 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { 1367 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); 1368 1369 br->multicast_startup_query_interval = clock_t_to_jiffies(val); 1370 } 1371 1372 if (data[IFLA_BR_MCAST_STATS_ENABLED]) { 1373 __u8 mcast_stats; 1374 1375 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]); 1376 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats); 1377 } 1378 1379 if (data[IFLA_BR_MCAST_IGMP_VERSION]) { 1380 __u8 igmp_version; 1381 1382 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]); 1383 err = br_multicast_set_igmp_version(br, igmp_version); 1384 if (err) 1385 return err; 1386 } 1387 1388 #if IS_ENABLED(CONFIG_IPV6) 1389 if (data[IFLA_BR_MCAST_MLD_VERSION]) { 1390 __u8 mld_version; 1391 1392 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]); 1393 err = br_multicast_set_mld_version(br, mld_version); 1394 if (err) 1395 return err; 1396 } 1397 #endif 1398 #endif 1399 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1400 if (data[IFLA_BR_NF_CALL_IPTABLES]) { 1401 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); 1402 1403 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); 1404 } 1405 1406 if (data[IFLA_BR_NF_CALL_IP6TABLES]) { 1407 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); 1408 1409 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); 1410 } 1411 1412 if (data[IFLA_BR_NF_CALL_ARPTABLES]) { 1413 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); 1414 1415 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); 1416 } 1417 #endif 1418 1419 if (data[IFLA_BR_MULTI_BOOLOPT]) { 1420 struct br_boolopt_multi *bm; 1421 1422 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]); 1423 err = br_boolopt_multi_toggle(br, bm, extack); 1424 if (err) 1425 return err; 1426 } 1427 1428 return 0; 1429 } 1430 1431 static int br_dev_newlink(struct net *src_net, struct net_device *dev, 1432 struct nlattr *tb[], struct nlattr *data[], 1433 struct netlink_ext_ack *extack) 1434 { 1435 struct net_bridge *br = netdev_priv(dev); 1436 int err; 1437 1438 err = register_netdevice(dev); 1439 if (err) 1440 return err; 1441 1442 if (tb[IFLA_ADDRESS]) { 1443 spin_lock_bh(&br->lock); 1444 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); 1445 spin_unlock_bh(&br->lock); 1446 } 1447 1448 err = br_changelink(dev, tb, data, extack); 1449 if (err) 1450 br_dev_delete(dev, NULL); 1451 1452 return err; 1453 } 1454 1455 static size_t br_get_size(const struct net_device *brdev) 1456 { 1457 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ 1458 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ 1459 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ 1460 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ 1461 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ 1462 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ 1463 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ 1464 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1465 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ 1466 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ 1467 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ 1468 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */ 1469 #endif 1470 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ 1471 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ 1472 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ 1473 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ 1474 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ 1475 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ 1476 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ 1477 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ 1478 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ 1479 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ 1480 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ 1481 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ 1482 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1483 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ 1484 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ 1485 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ 1486 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ 1487 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */ 1488 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ 1489 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ 1490 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ 1491 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ 1492 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ 1493 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ 1494 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ 1495 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ 1496 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ 1497 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ 1498 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */ 1499 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */ 1500 #endif 1501 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1502 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ 1503 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ 1504 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ 1505 #endif 1506 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */ 1507 0; 1508 } 1509 1510 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) 1511 { 1512 struct net_bridge *br = netdev_priv(brdev); 1513 u32 forward_delay = jiffies_to_clock_t(br->forward_delay); 1514 u32 hello_time = jiffies_to_clock_t(br->hello_time); 1515 u32 age_time = jiffies_to_clock_t(br->max_age); 1516 u32 ageing_time = jiffies_to_clock_t(br->ageing_time); 1517 u32 stp_enabled = br->stp_enabled; 1518 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; 1519 u8 vlan_enabled = br_vlan_enabled(br->dev); 1520 struct br_boolopt_multi bm; 1521 u64 clockval; 1522 1523 clockval = br_timer_value(&br->hello_timer); 1524 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) 1525 return -EMSGSIZE; 1526 clockval = br_timer_value(&br->tcn_timer); 1527 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) 1528 return -EMSGSIZE; 1529 clockval = br_timer_value(&br->topology_change_timer); 1530 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, 1531 IFLA_BR_PAD)) 1532 return -EMSGSIZE; 1533 clockval = br_timer_value(&br->gc_work.timer); 1534 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) 1535 return -EMSGSIZE; 1536 1537 br_boolopt_multi_get(br, &bm); 1538 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || 1539 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || 1540 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || 1541 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || 1542 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || 1543 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || 1544 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || 1545 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || 1546 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), 1547 &br->bridge_id) || 1548 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), 1549 &br->designated_root) || 1550 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || 1551 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || 1552 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || 1553 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, 1554 br->topology_change_detected) || 1555 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) || 1556 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm)) 1557 return -EMSGSIZE; 1558 1559 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1560 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || 1561 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || 1562 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, 1563 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) || 1564 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT, 1565 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT))) 1566 return -EMSGSIZE; 1567 #endif 1568 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1569 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || 1570 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, 1571 br_opt_get(br, BROPT_MULTICAST_ENABLED)) || 1572 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, 1573 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) || 1574 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, 1575 br_opt_get(br, BROPT_MULTICAST_QUERIER)) || 1576 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED, 1577 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) || 1578 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) || 1579 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || 1580 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, 1581 br->multicast_last_member_count) || 1582 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, 1583 br->multicast_startup_query_count) || 1584 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION, 1585 br->multicast_igmp_version)) 1586 return -EMSGSIZE; 1587 #if IS_ENABLED(CONFIG_IPV6) 1588 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION, 1589 br->multicast_mld_version)) 1590 return -EMSGSIZE; 1591 #endif 1592 clockval = jiffies_to_clock_t(br->multicast_last_member_interval); 1593 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, 1594 IFLA_BR_PAD)) 1595 return -EMSGSIZE; 1596 clockval = jiffies_to_clock_t(br->multicast_membership_interval); 1597 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, 1598 IFLA_BR_PAD)) 1599 return -EMSGSIZE; 1600 clockval = jiffies_to_clock_t(br->multicast_querier_interval); 1601 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, 1602 IFLA_BR_PAD)) 1603 return -EMSGSIZE; 1604 clockval = jiffies_to_clock_t(br->multicast_query_interval); 1605 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, 1606 IFLA_BR_PAD)) 1607 return -EMSGSIZE; 1608 clockval = jiffies_to_clock_t(br->multicast_query_response_interval); 1609 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, 1610 IFLA_BR_PAD)) 1611 return -EMSGSIZE; 1612 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); 1613 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, 1614 IFLA_BR_PAD)) 1615 return -EMSGSIZE; 1616 #endif 1617 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1618 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, 1619 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) || 1620 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, 1621 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) || 1622 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, 1623 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0)) 1624 return -EMSGSIZE; 1625 #endif 1626 1627 return 0; 1628 } 1629 1630 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr) 1631 { 1632 struct net_bridge_port *p = NULL; 1633 struct net_bridge_vlan_group *vg; 1634 struct net_bridge_vlan *v; 1635 struct net_bridge *br; 1636 int numvls = 0; 1637 1638 switch (attr) { 1639 case IFLA_STATS_LINK_XSTATS: 1640 br = netdev_priv(dev); 1641 vg = br_vlan_group(br); 1642 break; 1643 case IFLA_STATS_LINK_XSTATS_SLAVE: 1644 p = br_port_get_rtnl(dev); 1645 if (!p) 1646 return 0; 1647 br = p->br; 1648 vg = nbp_vlan_group(p); 1649 break; 1650 default: 1651 return 0; 1652 } 1653 1654 if (vg) { 1655 /* we need to count all, even placeholder entries */ 1656 list_for_each_entry(v, &vg->vlan_list, vlist) 1657 numvls++; 1658 } 1659 1660 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + 1661 nla_total_size(sizeof(struct br_mcast_stats)) + 1662 nla_total_size(0); 1663 } 1664 1665 static int br_fill_linkxstats(struct sk_buff *skb, 1666 const struct net_device *dev, 1667 int *prividx, int attr) 1668 { 1669 struct nlattr *nla __maybe_unused; 1670 struct net_bridge_port *p = NULL; 1671 struct net_bridge_vlan_group *vg; 1672 struct net_bridge_vlan *v; 1673 struct net_bridge *br; 1674 struct nlattr *nest; 1675 int vl_idx = 0; 1676 1677 switch (attr) { 1678 case IFLA_STATS_LINK_XSTATS: 1679 br = netdev_priv(dev); 1680 vg = br_vlan_group(br); 1681 break; 1682 case IFLA_STATS_LINK_XSTATS_SLAVE: 1683 p = br_port_get_rtnl(dev); 1684 if (!p) 1685 return 0; 1686 br = p->br; 1687 vg = nbp_vlan_group(p); 1688 break; 1689 default: 1690 return -EINVAL; 1691 } 1692 1693 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE); 1694 if (!nest) 1695 return -EMSGSIZE; 1696 1697 if (vg) { 1698 u16 pvid; 1699 1700 pvid = br_get_pvid(vg); 1701 list_for_each_entry(v, &vg->vlan_list, vlist) { 1702 struct bridge_vlan_xstats vxi; 1703 struct pcpu_sw_netstats stats; 1704 1705 if (++vl_idx < *prividx) 1706 continue; 1707 memset(&vxi, 0, sizeof(vxi)); 1708 vxi.vid = v->vid; 1709 vxi.flags = v->flags; 1710 if (v->vid == pvid) 1711 vxi.flags |= BRIDGE_VLAN_INFO_PVID; 1712 br_vlan_get_stats(v, &stats); 1713 vxi.rx_bytes = stats.rx_bytes; 1714 vxi.rx_packets = stats.rx_packets; 1715 vxi.tx_bytes = stats.tx_bytes; 1716 vxi.tx_packets = stats.tx_packets; 1717 1718 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) 1719 goto nla_put_failure; 1720 } 1721 } 1722 1723 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 1724 if (++vl_idx >= *prividx) { 1725 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST, 1726 sizeof(struct br_mcast_stats), 1727 BRIDGE_XSTATS_PAD); 1728 if (!nla) 1729 goto nla_put_failure; 1730 br_multicast_get_stats(br, p, nla_data(nla)); 1731 } 1732 #endif 1733 1734 if (p) { 1735 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP, 1736 sizeof(p->stp_xstats), 1737 BRIDGE_XSTATS_PAD); 1738 if (!nla) 1739 goto nla_put_failure; 1740 1741 spin_lock_bh(&br->lock); 1742 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats)); 1743 spin_unlock_bh(&br->lock); 1744 } 1745 1746 nla_nest_end(skb, nest); 1747 *prividx = 0; 1748 1749 return 0; 1750 1751 nla_put_failure: 1752 nla_nest_end(skb, nest); 1753 *prividx = vl_idx; 1754 1755 return -EMSGSIZE; 1756 } 1757 1758 static struct rtnl_af_ops br_af_ops __read_mostly = { 1759 .family = AF_BRIDGE, 1760 .get_link_af_size = br_get_link_af_size_filtered, 1761 }; 1762 1763 struct rtnl_link_ops br_link_ops __read_mostly = { 1764 .kind = "bridge", 1765 .priv_size = sizeof(struct net_bridge), 1766 .setup = br_dev_setup, 1767 .maxtype = IFLA_BR_MAX, 1768 .policy = br_policy, 1769 .validate = br_validate, 1770 .newlink = br_dev_newlink, 1771 .changelink = br_changelink, 1772 .dellink = br_dev_delete, 1773 .get_size = br_get_size, 1774 .fill_info = br_fill_info, 1775 .fill_linkxstats = br_fill_linkxstats, 1776 .get_linkxstats_size = br_get_linkxstats_size, 1777 1778 .slave_maxtype = IFLA_BRPORT_MAX, 1779 .slave_policy = br_port_policy, 1780 .slave_changelink = br_port_slave_changelink, 1781 .get_slave_size = br_port_get_slave_size, 1782 .fill_slave_info = br_port_fill_slave_info, 1783 }; 1784 1785 int __init br_netlink_init(void) 1786 { 1787 int err; 1788 1789 br_mdb_init(); 1790 br_vlan_rtnl_init(); 1791 rtnl_af_register(&br_af_ops); 1792 1793 err = rtnl_link_register(&br_link_ops); 1794 if (err) 1795 goto out_af; 1796 1797 return 0; 1798 1799 out_af: 1800 rtnl_af_unregister(&br_af_ops); 1801 br_mdb_uninit(); 1802 return err; 1803 } 1804 1805 void br_netlink_fini(void) 1806 { 1807 br_mdb_uninit(); 1808 br_vlan_rtnl_uninit(); 1809 rtnl_af_unregister(&br_af_ops); 1810 rtnl_link_unregister(&br_link_ops); 1811 } 1812