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