| 1 | /* |
| 2 | * Bridge netlink control interface |
| 3 | * |
| 4 | * Authors: |
| 5 | * Stephen Hemminger <shemminger@osdl.org> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/slab.h> |
| 15 | #include <linux/etherdevice.h> |
| 16 | #include <net/rtnetlink.h> |
| 17 | #include <net/net_namespace.h> |
| 18 | #include <net/sock.h> |
| 19 | #include <uapi/linux/if_bridge.h> |
| 20 | |
| 21 | #include "br_private.h" |
| 22 | #include "br_private_stp.h" |
| 23 | |
| 24 | static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg, |
| 25 | u32 filter_mask) |
| 26 | { |
| 27 | struct net_bridge_vlan *v; |
| 28 | u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; |
| 29 | u16 flags, pvid; |
| 30 | int num_vlans = 0; |
| 31 | |
| 32 | if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) |
| 33 | return 0; |
| 34 | |
| 35 | pvid = br_get_pvid(vg); |
| 36 | /* Count number of vlan infos */ |
| 37 | list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| 38 | flags = 0; |
| 39 | /* only a context, bridge vlan not activated */ |
| 40 | if (!br_vlan_should_use(v)) |
| 41 | continue; |
| 42 | if (v->vid == pvid) |
| 43 | flags |= BRIDGE_VLAN_INFO_PVID; |
| 44 | |
| 45 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| 46 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| 47 | |
| 48 | if (vid_range_start == 0) { |
| 49 | goto initvars; |
| 50 | } else if ((v->vid - vid_range_end) == 1 && |
| 51 | flags == vid_range_flags) { |
| 52 | vid_range_end = v->vid; |
| 53 | continue; |
| 54 | } else { |
| 55 | if ((vid_range_end - vid_range_start) > 0) |
| 56 | num_vlans += 2; |
| 57 | else |
| 58 | num_vlans += 1; |
| 59 | } |
| 60 | initvars: |
| 61 | vid_range_start = v->vid; |
| 62 | vid_range_end = v->vid; |
| 63 | vid_range_flags = flags; |
| 64 | } |
| 65 | |
| 66 | if (vid_range_start != 0) { |
| 67 | if ((vid_range_end - vid_range_start) > 0) |
| 68 | num_vlans += 2; |
| 69 | else |
| 70 | num_vlans += 1; |
| 71 | } |
| 72 | |
| 73 | return num_vlans; |
| 74 | } |
| 75 | |
| 76 | static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg, |
| 77 | u32 filter_mask) |
| 78 | { |
| 79 | int num_vlans; |
| 80 | |
| 81 | if (!vg) |
| 82 | return 0; |
| 83 | |
| 84 | if (filter_mask & RTEXT_FILTER_BRVLAN) |
| 85 | return vg->num_vlans; |
| 86 | |
| 87 | rcu_read_lock(); |
| 88 | num_vlans = __get_num_vlan_infos(vg, filter_mask); |
| 89 | rcu_read_unlock(); |
| 90 | |
| 91 | return num_vlans; |
| 92 | } |
| 93 | |
| 94 | static size_t br_get_link_af_size_filtered(const struct net_device *dev, |
| 95 | u32 filter_mask) |
| 96 | { |
| 97 | struct net_bridge_vlan_group *vg = NULL; |
| 98 | struct net_bridge_port *p; |
| 99 | struct net_bridge *br; |
| 100 | int num_vlan_infos; |
| 101 | |
| 102 | rcu_read_lock(); |
| 103 | if (br_port_exists(dev)) { |
| 104 | p = br_port_get_rcu(dev); |
| 105 | vg = nbp_vlan_group_rcu(p); |
| 106 | } else if (dev->priv_flags & IFF_EBRIDGE) { |
| 107 | br = netdev_priv(dev); |
| 108 | vg = br_vlan_group_rcu(br); |
| 109 | } |
| 110 | num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask); |
| 111 | rcu_read_unlock(); |
| 112 | |
| 113 | /* Each VLAN is returned in bridge_vlan_info along with flags */ |
| 114 | return num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); |
| 115 | } |
| 116 | |
| 117 | static inline size_t br_port_info_size(void) |
| 118 | { |
| 119 | return nla_total_size(1) /* IFLA_BRPORT_STATE */ |
| 120 | + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ |
| 121 | + nla_total_size(4) /* IFLA_BRPORT_COST */ |
| 122 | + nla_total_size(1) /* IFLA_BRPORT_MODE */ |
| 123 | + nla_total_size(1) /* IFLA_BRPORT_GUARD */ |
| 124 | + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ |
| 125 | + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ |
| 126 | + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ |
| 127 | + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ |
| 128 | + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */ |
| 129 | + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */ |
| 130 | + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */ |
| 131 | + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */ |
| 132 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */ |
| 133 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */ |
| 134 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */ |
| 135 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */ |
| 136 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */ |
| 137 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */ |
| 138 | + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */ |
| 139 | + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */ |
| 140 | + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */ |
| 141 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 142 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */ |
| 143 | #endif |
| 144 | + 0; |
| 145 | } |
| 146 | |
| 147 | static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) |
| 148 | { |
| 149 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) |
| 150 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
| 151 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
| 152 | + nla_total_size(4) /* IFLA_MASTER */ |
| 153 | + nla_total_size(4) /* IFLA_MTU */ |
| 154 | + nla_total_size(4) /* IFLA_LINK */ |
| 155 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
| 156 | + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ |
| 157 | + nla_total_size(br_get_link_af_size_filtered(dev, |
| 158 | filter_mask)); /* IFLA_AF_SPEC */ |
| 159 | } |
| 160 | |
| 161 | static int br_port_fill_attrs(struct sk_buff *skb, |
| 162 | const struct net_bridge_port *p) |
| 163 | { |
| 164 | u8 mode = !!(p->flags & BR_HAIRPIN_MODE); |
| 165 | u64 timerval; |
| 166 | |
| 167 | if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || |
| 168 | nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || |
| 169 | nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || |
| 170 | nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || |
| 171 | nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || |
| 172 | nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) || |
| 173 | nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || |
| 174 | nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || |
| 175 | nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)) || |
| 176 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || |
| 177 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, |
| 178 | !!(p->flags & BR_PROXYARP_WIFI)) || |
| 179 | nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id), |
| 180 | &p->designated_root) || |
| 181 | nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id), |
| 182 | &p->designated_bridge) || |
| 183 | nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) || |
| 184 | nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) || |
| 185 | nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) || |
| 186 | nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) || |
| 187 | nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, |
| 188 | p->topology_change_ack) || |
| 189 | nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending)) |
| 190 | return -EMSGSIZE; |
| 191 | |
| 192 | timerval = br_timer_value(&p->message_age_timer); |
| 193 | if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval, |
| 194 | IFLA_BRPORT_PAD)) |
| 195 | return -EMSGSIZE; |
| 196 | timerval = br_timer_value(&p->forward_delay_timer); |
| 197 | if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval, |
| 198 | IFLA_BRPORT_PAD)) |
| 199 | return -EMSGSIZE; |
| 200 | timerval = br_timer_value(&p->hold_timer); |
| 201 | if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval, |
| 202 | IFLA_BRPORT_PAD)) |
| 203 | return -EMSGSIZE; |
| 204 | |
| 205 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 206 | if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER, |
| 207 | p->multicast_router)) |
| 208 | return -EMSGSIZE; |
| 209 | #endif |
| 210 | |
| 211 | return 0; |
| 212 | } |
| 213 | |
| 214 | static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, |
| 215 | u16 vid_end, u16 flags) |
| 216 | { |
| 217 | struct bridge_vlan_info vinfo; |
| 218 | |
| 219 | if ((vid_end - vid_start) > 0) { |
| 220 | /* add range to skb */ |
| 221 | vinfo.vid = vid_start; |
| 222 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; |
| 223 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 224 | sizeof(vinfo), &vinfo)) |
| 225 | goto nla_put_failure; |
| 226 | |
| 227 | vinfo.vid = vid_end; |
| 228 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; |
| 229 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 230 | sizeof(vinfo), &vinfo)) |
| 231 | goto nla_put_failure; |
| 232 | } else { |
| 233 | vinfo.vid = vid_start; |
| 234 | vinfo.flags = flags; |
| 235 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 236 | sizeof(vinfo), &vinfo)) |
| 237 | goto nla_put_failure; |
| 238 | } |
| 239 | |
| 240 | return 0; |
| 241 | |
| 242 | nla_put_failure: |
| 243 | return -EMSGSIZE; |
| 244 | } |
| 245 | |
| 246 | static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, |
| 247 | struct net_bridge_vlan_group *vg) |
| 248 | { |
| 249 | struct net_bridge_vlan *v; |
| 250 | u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; |
| 251 | u16 flags, pvid; |
| 252 | int err = 0; |
| 253 | |
| 254 | /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan |
| 255 | * and mark vlan info with begin and end flags |
| 256 | * if vlaninfo represents a range |
| 257 | */ |
| 258 | pvid = br_get_pvid(vg); |
| 259 | list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| 260 | flags = 0; |
| 261 | if (!br_vlan_should_use(v)) |
| 262 | continue; |
| 263 | if (v->vid == pvid) |
| 264 | flags |= BRIDGE_VLAN_INFO_PVID; |
| 265 | |
| 266 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| 267 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| 268 | |
| 269 | if (vid_range_start == 0) { |
| 270 | goto initvars; |
| 271 | } else if ((v->vid - vid_range_end) == 1 && |
| 272 | flags == vid_range_flags) { |
| 273 | vid_range_end = v->vid; |
| 274 | continue; |
| 275 | } else { |
| 276 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, |
| 277 | vid_range_end, |
| 278 | vid_range_flags); |
| 279 | if (err) |
| 280 | return err; |
| 281 | } |
| 282 | |
| 283 | initvars: |
| 284 | vid_range_start = v->vid; |
| 285 | vid_range_end = v->vid; |
| 286 | vid_range_flags = flags; |
| 287 | } |
| 288 | |
| 289 | if (vid_range_start != 0) { |
| 290 | /* Call it once more to send any left over vlans */ |
| 291 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, |
| 292 | vid_range_end, |
| 293 | vid_range_flags); |
| 294 | if (err) |
| 295 | return err; |
| 296 | } |
| 297 | |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | static int br_fill_ifvlaninfo(struct sk_buff *skb, |
| 302 | struct net_bridge_vlan_group *vg) |
| 303 | { |
| 304 | struct bridge_vlan_info vinfo; |
| 305 | struct net_bridge_vlan *v; |
| 306 | u16 pvid; |
| 307 | |
| 308 | pvid = br_get_pvid(vg); |
| 309 | list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| 310 | if (!br_vlan_should_use(v)) |
| 311 | continue; |
| 312 | |
| 313 | vinfo.vid = v->vid; |
| 314 | vinfo.flags = 0; |
| 315 | if (v->vid == pvid) |
| 316 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; |
| 317 | |
| 318 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| 319 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| 320 | |
| 321 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 322 | sizeof(vinfo), &vinfo)) |
| 323 | goto nla_put_failure; |
| 324 | } |
| 325 | |
| 326 | return 0; |
| 327 | |
| 328 | nla_put_failure: |
| 329 | return -EMSGSIZE; |
| 330 | } |
| 331 | |
| 332 | /* |
| 333 | * Create one netlink message for one interface |
| 334 | * Contains port and master info as well as carrier and bridge state. |
| 335 | */ |
| 336 | static int br_fill_ifinfo(struct sk_buff *skb, |
| 337 | struct net_bridge_port *port, |
| 338 | u32 pid, u32 seq, int event, unsigned int flags, |
| 339 | u32 filter_mask, const struct net_device *dev) |
| 340 | { |
| 341 | struct net_bridge *br; |
| 342 | struct ifinfomsg *hdr; |
| 343 | struct nlmsghdr *nlh; |
| 344 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
| 345 | |
| 346 | if (port) |
| 347 | br = port->br; |
| 348 | else |
| 349 | br = netdev_priv(dev); |
| 350 | |
| 351 | br_debug(br, "br_fill_info event %d port %s master %s\n", |
| 352 | event, dev->name, br->dev->name); |
| 353 | |
| 354 | nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); |
| 355 | if (nlh == NULL) |
| 356 | return -EMSGSIZE; |
| 357 | |
| 358 | hdr = nlmsg_data(nlh); |
| 359 | hdr->ifi_family = AF_BRIDGE; |
| 360 | hdr->__ifi_pad = 0; |
| 361 | hdr->ifi_type = dev->type; |
| 362 | hdr->ifi_index = dev->ifindex; |
| 363 | hdr->ifi_flags = dev_get_flags(dev); |
| 364 | hdr->ifi_change = 0; |
| 365 | |
| 366 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
| 367 | nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || |
| 368 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || |
| 369 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || |
| 370 | (dev->addr_len && |
| 371 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || |
| 372 | (dev->ifindex != dev_get_iflink(dev) && |
| 373 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) |
| 374 | goto nla_put_failure; |
| 375 | |
| 376 | if (event == RTM_NEWLINK && port) { |
| 377 | struct nlattr *nest |
| 378 | = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); |
| 379 | |
| 380 | if (nest == NULL || br_port_fill_attrs(skb, port) < 0) |
| 381 | goto nla_put_failure; |
| 382 | nla_nest_end(skb, nest); |
| 383 | } |
| 384 | |
| 385 | /* Check if the VID information is requested */ |
| 386 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || |
| 387 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { |
| 388 | struct net_bridge_vlan_group *vg; |
| 389 | struct nlattr *af; |
| 390 | int err; |
| 391 | |
| 392 | /* RCU needed because of the VLAN locking rules (rcu || rtnl) */ |
| 393 | rcu_read_lock(); |
| 394 | if (port) |
| 395 | vg = nbp_vlan_group_rcu(port); |
| 396 | else |
| 397 | vg = br_vlan_group_rcu(br); |
| 398 | |
| 399 | if (!vg || !vg->num_vlans) { |
| 400 | rcu_read_unlock(); |
| 401 | goto done; |
| 402 | } |
| 403 | af = nla_nest_start(skb, IFLA_AF_SPEC); |
| 404 | if (!af) { |
| 405 | rcu_read_unlock(); |
| 406 | goto nla_put_failure; |
| 407 | } |
| 408 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) |
| 409 | err = br_fill_ifvlaninfo_compressed(skb, vg); |
| 410 | else |
| 411 | err = br_fill_ifvlaninfo(skb, vg); |
| 412 | rcu_read_unlock(); |
| 413 | if (err) |
| 414 | goto nla_put_failure; |
| 415 | nla_nest_end(skb, af); |
| 416 | } |
| 417 | |
| 418 | done: |
| 419 | nlmsg_end(skb, nlh); |
| 420 | return 0; |
| 421 | |
| 422 | nla_put_failure: |
| 423 | nlmsg_cancel(skb, nlh); |
| 424 | return -EMSGSIZE; |
| 425 | } |
| 426 | |
| 427 | /* |
| 428 | * Notify listeners of a change in port information |
| 429 | */ |
| 430 | void br_ifinfo_notify(int event, struct net_bridge_port *port) |
| 431 | { |
| 432 | struct net *net; |
| 433 | struct sk_buff *skb; |
| 434 | int err = -ENOBUFS; |
| 435 | u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; |
| 436 | |
| 437 | if (!port) |
| 438 | return; |
| 439 | |
| 440 | net = dev_net(port->dev); |
| 441 | br_debug(port->br, "port %u(%s) event %d\n", |
| 442 | (unsigned int)port->port_no, port->dev->name, event); |
| 443 | |
| 444 | skb = nlmsg_new(br_nlmsg_size(port->dev, filter), GFP_ATOMIC); |
| 445 | if (skb == NULL) |
| 446 | goto errout; |
| 447 | |
| 448 | err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, port->dev); |
| 449 | if (err < 0) { |
| 450 | /* -EMSGSIZE implies BUG in br_nlmsg_size() */ |
| 451 | WARN_ON(err == -EMSGSIZE); |
| 452 | kfree_skb(skb); |
| 453 | goto errout; |
| 454 | } |
| 455 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
| 456 | return; |
| 457 | errout: |
| 458 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
| 459 | } |
| 460 | |
| 461 | |
| 462 | /* |
| 463 | * Dump information about all ports, in response to GETLINK |
| 464 | */ |
| 465 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
| 466 | struct net_device *dev, u32 filter_mask, int nlflags) |
| 467 | { |
| 468 | struct net_bridge_port *port = br_port_get_rtnl(dev); |
| 469 | |
| 470 | if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && |
| 471 | !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) |
| 472 | return 0; |
| 473 | |
| 474 | return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, |
| 475 | filter_mask, dev); |
| 476 | } |
| 477 | |
| 478 | static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, |
| 479 | int cmd, struct bridge_vlan_info *vinfo) |
| 480 | { |
| 481 | int err = 0; |
| 482 | |
| 483 | switch (cmd) { |
| 484 | case RTM_SETLINK: |
| 485 | if (p) { |
| 486 | /* if the MASTER flag is set this will act on the global |
| 487 | * per-VLAN entry as well |
| 488 | */ |
| 489 | err = nbp_vlan_add(p, vinfo->vid, vinfo->flags); |
| 490 | if (err) |
| 491 | break; |
| 492 | } else { |
| 493 | vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; |
| 494 | err = br_vlan_add(br, vinfo->vid, vinfo->flags); |
| 495 | } |
| 496 | break; |
| 497 | |
| 498 | case RTM_DELLINK: |
| 499 | if (p) { |
| 500 | nbp_vlan_delete(p, vinfo->vid); |
| 501 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) |
| 502 | br_vlan_delete(p->br, vinfo->vid); |
| 503 | } else { |
| 504 | br_vlan_delete(br, vinfo->vid); |
| 505 | } |
| 506 | break; |
| 507 | } |
| 508 | |
| 509 | return err; |
| 510 | } |
| 511 | |
| 512 | static int br_afspec(struct net_bridge *br, |
| 513 | struct net_bridge_port *p, |
| 514 | struct nlattr *af_spec, |
| 515 | int cmd) |
| 516 | { |
| 517 | struct bridge_vlan_info *vinfo_start = NULL; |
| 518 | struct bridge_vlan_info *vinfo = NULL; |
| 519 | struct nlattr *attr; |
| 520 | int err = 0; |
| 521 | int rem; |
| 522 | |
| 523 | nla_for_each_nested(attr, af_spec, rem) { |
| 524 | if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO) |
| 525 | continue; |
| 526 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) |
| 527 | return -EINVAL; |
| 528 | vinfo = nla_data(attr); |
| 529 | if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK) |
| 530 | return -EINVAL; |
| 531 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
| 532 | if (vinfo_start) |
| 533 | return -EINVAL; |
| 534 | vinfo_start = vinfo; |
| 535 | /* don't allow range of pvids */ |
| 536 | if (vinfo_start->flags & BRIDGE_VLAN_INFO_PVID) |
| 537 | return -EINVAL; |
| 538 | continue; |
| 539 | } |
| 540 | |
| 541 | if (vinfo_start) { |
| 542 | struct bridge_vlan_info tmp_vinfo; |
| 543 | int v; |
| 544 | |
| 545 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END)) |
| 546 | return -EINVAL; |
| 547 | |
| 548 | if (vinfo->vid <= vinfo_start->vid) |
| 549 | return -EINVAL; |
| 550 | |
| 551 | memcpy(&tmp_vinfo, vinfo_start, |
| 552 | sizeof(struct bridge_vlan_info)); |
| 553 | |
| 554 | for (v = vinfo_start->vid; v <= vinfo->vid; v++) { |
| 555 | tmp_vinfo.vid = v; |
| 556 | err = br_vlan_info(br, p, cmd, &tmp_vinfo); |
| 557 | if (err) |
| 558 | break; |
| 559 | } |
| 560 | vinfo_start = NULL; |
| 561 | } else { |
| 562 | err = br_vlan_info(br, p, cmd, vinfo); |
| 563 | } |
| 564 | if (err) |
| 565 | break; |
| 566 | } |
| 567 | |
| 568 | return err; |
| 569 | } |
| 570 | |
| 571 | static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { |
| 572 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, |
| 573 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, |
| 574 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, |
| 575 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, |
| 576 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, |
| 577 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, |
| 578 | [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, |
| 579 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, |
| 580 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, |
| 581 | [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, |
| 582 | [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, |
| 583 | [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, |
| 584 | }; |
| 585 | |
| 586 | /* Change the state of the port and notify spanning tree */ |
| 587 | static int br_set_port_state(struct net_bridge_port *p, u8 state) |
| 588 | { |
| 589 | if (state > BR_STATE_BLOCKING) |
| 590 | return -EINVAL; |
| 591 | |
| 592 | /* if kernel STP is running, don't allow changes */ |
| 593 | if (p->br->stp_enabled == BR_KERNEL_STP) |
| 594 | return -EBUSY; |
| 595 | |
| 596 | /* if device is not up, change is not allowed |
| 597 | * if link is not present, only allowable state is disabled |
| 598 | */ |
| 599 | if (!netif_running(p->dev) || |
| 600 | (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) |
| 601 | return -ENETDOWN; |
| 602 | |
| 603 | br_set_state(p, state); |
| 604 | br_port_state_selection(p->br); |
| 605 | return 0; |
| 606 | } |
| 607 | |
| 608 | /* Set/clear or port flags based on attribute */ |
| 609 | static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], |
| 610 | int attrtype, unsigned long mask) |
| 611 | { |
| 612 | if (tb[attrtype]) { |
| 613 | u8 flag = nla_get_u8(tb[attrtype]); |
| 614 | if (flag) |
| 615 | p->flags |= mask; |
| 616 | else |
| 617 | p->flags &= ~mask; |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | /* Process bridge protocol info on port */ |
| 622 | static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) |
| 623 | { |
| 624 | int err; |
| 625 | unsigned long old_flags = p->flags; |
| 626 | |
| 627 | br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); |
| 628 | br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); |
| 629 | br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); |
| 630 | br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); |
| 631 | br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); |
| 632 | br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); |
| 633 | br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); |
| 634 | br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); |
| 635 | |
| 636 | if (tb[IFLA_BRPORT_COST]) { |
| 637 | err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); |
| 638 | if (err) |
| 639 | return err; |
| 640 | } |
| 641 | |
| 642 | if (tb[IFLA_BRPORT_PRIORITY]) { |
| 643 | err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); |
| 644 | if (err) |
| 645 | return err; |
| 646 | } |
| 647 | |
| 648 | if (tb[IFLA_BRPORT_STATE]) { |
| 649 | err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); |
| 650 | if (err) |
| 651 | return err; |
| 652 | } |
| 653 | |
| 654 | if (tb[IFLA_BRPORT_FLUSH]) |
| 655 | br_fdb_delete_by_port(p->br, p, 0, 0); |
| 656 | |
| 657 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 658 | if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { |
| 659 | u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); |
| 660 | |
| 661 | err = br_multicast_set_port_router(p, mcast_router); |
| 662 | if (err) |
| 663 | return err; |
| 664 | } |
| 665 | #endif |
| 666 | br_port_flags_change(p, old_flags ^ p->flags); |
| 667 | return 0; |
| 668 | } |
| 669 | |
| 670 | /* Change state and parameters on port. */ |
| 671 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) |
| 672 | { |
| 673 | struct nlattr *protinfo; |
| 674 | struct nlattr *afspec; |
| 675 | struct net_bridge_port *p; |
| 676 | struct nlattr *tb[IFLA_BRPORT_MAX + 1]; |
| 677 | int err = 0; |
| 678 | |
| 679 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); |
| 680 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
| 681 | if (!protinfo && !afspec) |
| 682 | return 0; |
| 683 | |
| 684 | p = br_port_get_rtnl(dev); |
| 685 | /* We want to accept dev as bridge itself if the AF_SPEC |
| 686 | * is set to see if someone is setting vlan info on the bridge |
| 687 | */ |
| 688 | if (!p && !afspec) |
| 689 | return -EINVAL; |
| 690 | |
| 691 | if (p && protinfo) { |
| 692 | if (protinfo->nla_type & NLA_F_NESTED) { |
| 693 | err = nla_parse_nested(tb, IFLA_BRPORT_MAX, |
| 694 | protinfo, br_port_policy); |
| 695 | if (err) |
| 696 | return err; |
| 697 | |
| 698 | spin_lock_bh(&p->br->lock); |
| 699 | err = br_setport(p, tb); |
| 700 | spin_unlock_bh(&p->br->lock); |
| 701 | } else { |
| 702 | /* Binary compatibility with old RSTP */ |
| 703 | if (nla_len(protinfo) < sizeof(u8)) |
| 704 | return -EINVAL; |
| 705 | |
| 706 | spin_lock_bh(&p->br->lock); |
| 707 | err = br_set_port_state(p, nla_get_u8(protinfo)); |
| 708 | spin_unlock_bh(&p->br->lock); |
| 709 | } |
| 710 | if (err) |
| 711 | goto out; |
| 712 | } |
| 713 | |
| 714 | if (afspec) { |
| 715 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, |
| 716 | afspec, RTM_SETLINK); |
| 717 | } |
| 718 | |
| 719 | if (err == 0) |
| 720 | br_ifinfo_notify(RTM_NEWLINK, p); |
| 721 | out: |
| 722 | return err; |
| 723 | } |
| 724 | |
| 725 | /* Delete port information */ |
| 726 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) |
| 727 | { |
| 728 | struct nlattr *afspec; |
| 729 | struct net_bridge_port *p; |
| 730 | int err = 0; |
| 731 | |
| 732 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
| 733 | if (!afspec) |
| 734 | return 0; |
| 735 | |
| 736 | p = br_port_get_rtnl(dev); |
| 737 | /* We want to accept dev as bridge itself as well */ |
| 738 | if (!p && !(dev->priv_flags & IFF_EBRIDGE)) |
| 739 | return -EINVAL; |
| 740 | |
| 741 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, |
| 742 | afspec, RTM_DELLINK); |
| 743 | if (err == 0) |
| 744 | /* Send RTM_NEWLINK because userspace |
| 745 | * expects RTM_NEWLINK for vlan dels |
| 746 | */ |
| 747 | br_ifinfo_notify(RTM_NEWLINK, p); |
| 748 | |
| 749 | return err; |
| 750 | } |
| 751 | static int br_validate(struct nlattr *tb[], struct nlattr *data[]) |
| 752 | { |
| 753 | if (tb[IFLA_ADDRESS]) { |
| 754 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) |
| 755 | return -EINVAL; |
| 756 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) |
| 757 | return -EADDRNOTAVAIL; |
| 758 | } |
| 759 | |
| 760 | if (!data) |
| 761 | return 0; |
| 762 | |
| 763 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 764 | if (data[IFLA_BR_VLAN_PROTOCOL]) { |
| 765 | switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) { |
| 766 | case htons(ETH_P_8021Q): |
| 767 | case htons(ETH_P_8021AD): |
| 768 | break; |
| 769 | default: |
| 770 | return -EPROTONOSUPPORT; |
| 771 | } |
| 772 | } |
| 773 | #endif |
| 774 | |
| 775 | return 0; |
| 776 | } |
| 777 | |
| 778 | static int br_dev_newlink(struct net *src_net, struct net_device *dev, |
| 779 | struct nlattr *tb[], struct nlattr *data[]) |
| 780 | { |
| 781 | struct net_bridge *br = netdev_priv(dev); |
| 782 | |
| 783 | if (tb[IFLA_ADDRESS]) { |
| 784 | spin_lock_bh(&br->lock); |
| 785 | br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); |
| 786 | spin_unlock_bh(&br->lock); |
| 787 | } |
| 788 | |
| 789 | return register_netdevice(dev); |
| 790 | } |
| 791 | |
| 792 | static int br_port_slave_changelink(struct net_device *brdev, |
| 793 | struct net_device *dev, |
| 794 | struct nlattr *tb[], |
| 795 | struct nlattr *data[]) |
| 796 | { |
| 797 | struct net_bridge *br = netdev_priv(brdev); |
| 798 | int ret; |
| 799 | |
| 800 | if (!data) |
| 801 | return 0; |
| 802 | |
| 803 | spin_lock_bh(&br->lock); |
| 804 | ret = br_setport(br_port_get_rtnl(dev), data); |
| 805 | spin_unlock_bh(&br->lock); |
| 806 | |
| 807 | return ret; |
| 808 | } |
| 809 | |
| 810 | static int br_port_fill_slave_info(struct sk_buff *skb, |
| 811 | const struct net_device *brdev, |
| 812 | const struct net_device *dev) |
| 813 | { |
| 814 | return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); |
| 815 | } |
| 816 | |
| 817 | static size_t br_port_get_slave_size(const struct net_device *brdev, |
| 818 | const struct net_device *dev) |
| 819 | { |
| 820 | return br_port_info_size(); |
| 821 | } |
| 822 | |
| 823 | static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { |
| 824 | [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, |
| 825 | [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, |
| 826 | [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, |
| 827 | [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, |
| 828 | [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, |
| 829 | [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, |
| 830 | [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, |
| 831 | [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, |
| 832 | [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, |
| 833 | [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, |
| 834 | .len = ETH_ALEN }, |
| 835 | [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, |
| 836 | [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, |
| 837 | [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, |
| 838 | [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, |
| 839 | [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, |
| 840 | [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, |
| 841 | [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, |
| 842 | [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, |
| 843 | [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, |
| 844 | [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, |
| 845 | [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, |
| 846 | [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, |
| 847 | [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, |
| 848 | [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, |
| 849 | [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, |
| 850 | [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, |
| 851 | [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, |
| 852 | [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, |
| 853 | [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, |
| 854 | }; |
| 855 | |
| 856 | static int br_changelink(struct net_device *brdev, struct nlattr *tb[], |
| 857 | struct nlattr *data[]) |
| 858 | { |
| 859 | struct net_bridge *br = netdev_priv(brdev); |
| 860 | int err; |
| 861 | |
| 862 | if (!data) |
| 863 | return 0; |
| 864 | |
| 865 | if (data[IFLA_BR_FORWARD_DELAY]) { |
| 866 | err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); |
| 867 | if (err) |
| 868 | return err; |
| 869 | } |
| 870 | |
| 871 | if (data[IFLA_BR_HELLO_TIME]) { |
| 872 | err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); |
| 873 | if (err) |
| 874 | return err; |
| 875 | } |
| 876 | |
| 877 | if (data[IFLA_BR_MAX_AGE]) { |
| 878 | err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); |
| 879 | if (err) |
| 880 | return err; |
| 881 | } |
| 882 | |
| 883 | if (data[IFLA_BR_AGEING_TIME]) { |
| 884 | err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); |
| 885 | if (err) |
| 886 | return err; |
| 887 | } |
| 888 | |
| 889 | if (data[IFLA_BR_STP_STATE]) { |
| 890 | u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); |
| 891 | |
| 892 | br_stp_set_enabled(br, stp_enabled); |
| 893 | } |
| 894 | |
| 895 | if (data[IFLA_BR_PRIORITY]) { |
| 896 | u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); |
| 897 | |
| 898 | br_stp_set_bridge_priority(br, priority); |
| 899 | } |
| 900 | |
| 901 | if (data[IFLA_BR_VLAN_FILTERING]) { |
| 902 | u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); |
| 903 | |
| 904 | err = __br_vlan_filter_toggle(br, vlan_filter); |
| 905 | if (err) |
| 906 | return err; |
| 907 | } |
| 908 | |
| 909 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 910 | if (data[IFLA_BR_VLAN_PROTOCOL]) { |
| 911 | __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); |
| 912 | |
| 913 | err = __br_vlan_set_proto(br, vlan_proto); |
| 914 | if (err) |
| 915 | return err; |
| 916 | } |
| 917 | |
| 918 | if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { |
| 919 | __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); |
| 920 | |
| 921 | err = __br_vlan_set_default_pvid(br, defpvid); |
| 922 | if (err) |
| 923 | return err; |
| 924 | } |
| 925 | |
| 926 | if (data[IFLA_BR_VLAN_STATS_ENABLED]) { |
| 927 | __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); |
| 928 | |
| 929 | err = br_vlan_set_stats(br, vlan_stats); |
| 930 | if (err) |
| 931 | return err; |
| 932 | } |
| 933 | #endif |
| 934 | |
| 935 | if (data[IFLA_BR_GROUP_FWD_MASK]) { |
| 936 | u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); |
| 937 | |
| 938 | if (fwd_mask & BR_GROUPFWD_RESTRICTED) |
| 939 | return -EINVAL; |
| 940 | br->group_fwd_mask = fwd_mask; |
| 941 | } |
| 942 | |
| 943 | if (data[IFLA_BR_GROUP_ADDR]) { |
| 944 | u8 new_addr[ETH_ALEN]; |
| 945 | |
| 946 | if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) |
| 947 | return -EINVAL; |
| 948 | memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); |
| 949 | if (!is_link_local_ether_addr(new_addr)) |
| 950 | return -EINVAL; |
| 951 | if (new_addr[5] == 1 || /* 802.3x Pause address */ |
| 952 | new_addr[5] == 2 || /* 802.3ad Slow protocols */ |
| 953 | new_addr[5] == 3) /* 802.1X PAE address */ |
| 954 | return -EINVAL; |
| 955 | spin_lock_bh(&br->lock); |
| 956 | memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); |
| 957 | spin_unlock_bh(&br->lock); |
| 958 | br->group_addr_set = true; |
| 959 | br_recalculate_fwd_mask(br); |
| 960 | } |
| 961 | |
| 962 | if (data[IFLA_BR_FDB_FLUSH]) |
| 963 | br_fdb_flush(br); |
| 964 | |
| 965 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 966 | if (data[IFLA_BR_MCAST_ROUTER]) { |
| 967 | u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); |
| 968 | |
| 969 | err = br_multicast_set_router(br, multicast_router); |
| 970 | if (err) |
| 971 | return err; |
| 972 | } |
| 973 | |
| 974 | if (data[IFLA_BR_MCAST_SNOOPING]) { |
| 975 | u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); |
| 976 | |
| 977 | err = br_multicast_toggle(br, mcast_snooping); |
| 978 | if (err) |
| 979 | return err; |
| 980 | } |
| 981 | |
| 982 | if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { |
| 983 | u8 val; |
| 984 | |
| 985 | val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); |
| 986 | br->multicast_query_use_ifaddr = !!val; |
| 987 | } |
| 988 | |
| 989 | if (data[IFLA_BR_MCAST_QUERIER]) { |
| 990 | u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); |
| 991 | |
| 992 | err = br_multicast_set_querier(br, mcast_querier); |
| 993 | if (err) |
| 994 | return err; |
| 995 | } |
| 996 | |
| 997 | if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) { |
| 998 | u32 val = nla_get_u32(data[IFLA_BR_MCAST_HASH_ELASTICITY]); |
| 999 | |
| 1000 | br->hash_elasticity = val; |
| 1001 | } |
| 1002 | |
| 1003 | if (data[IFLA_BR_MCAST_HASH_MAX]) { |
| 1004 | u32 hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); |
| 1005 | |
| 1006 | err = br_multicast_set_hash_max(br, hash_max); |
| 1007 | if (err) |
| 1008 | return err; |
| 1009 | } |
| 1010 | |
| 1011 | if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { |
| 1012 | u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); |
| 1013 | |
| 1014 | br->multicast_last_member_count = val; |
| 1015 | } |
| 1016 | |
| 1017 | if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { |
| 1018 | u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); |
| 1019 | |
| 1020 | br->multicast_startup_query_count = val; |
| 1021 | } |
| 1022 | |
| 1023 | if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { |
| 1024 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); |
| 1025 | |
| 1026 | br->multicast_last_member_interval = clock_t_to_jiffies(val); |
| 1027 | } |
| 1028 | |
| 1029 | if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { |
| 1030 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); |
| 1031 | |
| 1032 | br->multicast_membership_interval = clock_t_to_jiffies(val); |
| 1033 | } |
| 1034 | |
| 1035 | if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { |
| 1036 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); |
| 1037 | |
| 1038 | br->multicast_querier_interval = clock_t_to_jiffies(val); |
| 1039 | } |
| 1040 | |
| 1041 | if (data[IFLA_BR_MCAST_QUERY_INTVL]) { |
| 1042 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); |
| 1043 | |
| 1044 | br->multicast_query_interval = clock_t_to_jiffies(val); |
| 1045 | } |
| 1046 | |
| 1047 | if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { |
| 1048 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); |
| 1049 | |
| 1050 | br->multicast_query_response_interval = clock_t_to_jiffies(val); |
| 1051 | } |
| 1052 | |
| 1053 | if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { |
| 1054 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); |
| 1055 | |
| 1056 | br->multicast_startup_query_interval = clock_t_to_jiffies(val); |
| 1057 | } |
| 1058 | #endif |
| 1059 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 1060 | if (data[IFLA_BR_NF_CALL_IPTABLES]) { |
| 1061 | u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); |
| 1062 | |
| 1063 | br->nf_call_iptables = val ? true : false; |
| 1064 | } |
| 1065 | |
| 1066 | if (data[IFLA_BR_NF_CALL_IP6TABLES]) { |
| 1067 | u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); |
| 1068 | |
| 1069 | br->nf_call_ip6tables = val ? true : false; |
| 1070 | } |
| 1071 | |
| 1072 | if (data[IFLA_BR_NF_CALL_ARPTABLES]) { |
| 1073 | u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); |
| 1074 | |
| 1075 | br->nf_call_arptables = val ? true : false; |
| 1076 | } |
| 1077 | #endif |
| 1078 | |
| 1079 | return 0; |
| 1080 | } |
| 1081 | |
| 1082 | static size_t br_get_size(const struct net_device *brdev) |
| 1083 | { |
| 1084 | return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ |
| 1085 | nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ |
| 1086 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ |
| 1087 | nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ |
| 1088 | nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ |
| 1089 | nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ |
| 1090 | nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ |
| 1091 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 1092 | nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ |
| 1093 | nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ |
| 1094 | nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ |
| 1095 | #endif |
| 1096 | nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ |
| 1097 | nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ |
| 1098 | nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ |
| 1099 | nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ |
| 1100 | nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ |
| 1101 | nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ |
| 1102 | nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ |
| 1103 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ |
| 1104 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ |
| 1105 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ |
| 1106 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ |
| 1107 | nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ |
| 1108 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1109 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ |
| 1110 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ |
| 1111 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ |
| 1112 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ |
| 1113 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ |
| 1114 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ |
| 1115 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ |
| 1116 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ |
| 1117 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ |
| 1118 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ |
| 1119 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ |
| 1120 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ |
| 1121 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ |
| 1122 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ |
| 1123 | #endif |
| 1124 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 1125 | nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ |
| 1126 | nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ |
| 1127 | nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ |
| 1128 | #endif |
| 1129 | 0; |
| 1130 | } |
| 1131 | |
| 1132 | static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) |
| 1133 | { |
| 1134 | struct net_bridge *br = netdev_priv(brdev); |
| 1135 | u32 forward_delay = jiffies_to_clock_t(br->forward_delay); |
| 1136 | u32 hello_time = jiffies_to_clock_t(br->hello_time); |
| 1137 | u32 age_time = jiffies_to_clock_t(br->max_age); |
| 1138 | u32 ageing_time = jiffies_to_clock_t(br->ageing_time); |
| 1139 | u32 stp_enabled = br->stp_enabled; |
| 1140 | u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; |
| 1141 | u8 vlan_enabled = br_vlan_enabled(br); |
| 1142 | u64 clockval; |
| 1143 | |
| 1144 | clockval = br_timer_value(&br->hello_timer); |
| 1145 | if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) |
| 1146 | return -EMSGSIZE; |
| 1147 | clockval = br_timer_value(&br->tcn_timer); |
| 1148 | if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) |
| 1149 | return -EMSGSIZE; |
| 1150 | clockval = br_timer_value(&br->topology_change_timer); |
| 1151 | if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, |
| 1152 | IFLA_BR_PAD)) |
| 1153 | return -EMSGSIZE; |
| 1154 | clockval = br_timer_value(&br->gc_timer); |
| 1155 | if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) |
| 1156 | return -EMSGSIZE; |
| 1157 | |
| 1158 | if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || |
| 1159 | nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || |
| 1160 | nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || |
| 1161 | nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || |
| 1162 | nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || |
| 1163 | nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || |
| 1164 | nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || |
| 1165 | nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || |
| 1166 | nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), |
| 1167 | &br->bridge_id) || |
| 1168 | nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), |
| 1169 | &br->designated_root) || |
| 1170 | nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || |
| 1171 | nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || |
| 1172 | nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || |
| 1173 | nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, |
| 1174 | br->topology_change_detected) || |
| 1175 | nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr)) |
| 1176 | return -EMSGSIZE; |
| 1177 | |
| 1178 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 1179 | if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || |
| 1180 | nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || |
| 1181 | nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, br->vlan_stats_enabled)) |
| 1182 | return -EMSGSIZE; |
| 1183 | #endif |
| 1184 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1185 | if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || |
| 1186 | nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) || |
| 1187 | nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, |
| 1188 | br->multicast_query_use_ifaddr) || |
| 1189 | nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) || |
| 1190 | nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, |
| 1191 | br->hash_elasticity) || |
| 1192 | nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || |
| 1193 | nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, |
| 1194 | br->multicast_last_member_count) || |
| 1195 | nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, |
| 1196 | br->multicast_startup_query_count)) |
| 1197 | return -EMSGSIZE; |
| 1198 | |
| 1199 | clockval = jiffies_to_clock_t(br->multicast_last_member_interval); |
| 1200 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, |
| 1201 | IFLA_BR_PAD)) |
| 1202 | return -EMSGSIZE; |
| 1203 | clockval = jiffies_to_clock_t(br->multicast_membership_interval); |
| 1204 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, |
| 1205 | IFLA_BR_PAD)) |
| 1206 | return -EMSGSIZE; |
| 1207 | clockval = jiffies_to_clock_t(br->multicast_querier_interval); |
| 1208 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, |
| 1209 | IFLA_BR_PAD)) |
| 1210 | return -EMSGSIZE; |
| 1211 | clockval = jiffies_to_clock_t(br->multicast_query_interval); |
| 1212 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, |
| 1213 | IFLA_BR_PAD)) |
| 1214 | return -EMSGSIZE; |
| 1215 | clockval = jiffies_to_clock_t(br->multicast_query_response_interval); |
| 1216 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, |
| 1217 | IFLA_BR_PAD)) |
| 1218 | return -EMSGSIZE; |
| 1219 | clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); |
| 1220 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, |
| 1221 | IFLA_BR_PAD)) |
| 1222 | return -EMSGSIZE; |
| 1223 | #endif |
| 1224 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 1225 | if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, |
| 1226 | br->nf_call_iptables ? 1 : 0) || |
| 1227 | nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, |
| 1228 | br->nf_call_ip6tables ? 1 : 0) || |
| 1229 | nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, |
| 1230 | br->nf_call_arptables ? 1 : 0)) |
| 1231 | return -EMSGSIZE; |
| 1232 | #endif |
| 1233 | |
| 1234 | return 0; |
| 1235 | } |
| 1236 | |
| 1237 | static size_t br_get_linkxstats_size(const struct net_device *dev) |
| 1238 | { |
| 1239 | struct net_bridge *br = netdev_priv(dev); |
| 1240 | struct net_bridge_vlan_group *vg; |
| 1241 | struct net_bridge_vlan *v; |
| 1242 | int numvls = 0; |
| 1243 | |
| 1244 | vg = br_vlan_group(br); |
| 1245 | if (!vg) |
| 1246 | return 0; |
| 1247 | |
| 1248 | /* we need to count all, even placeholder entries */ |
| 1249 | list_for_each_entry(v, &vg->vlan_list, vlist) |
| 1250 | numvls++; |
| 1251 | |
| 1252 | /* account for the vlans and the link xstats type nest attribute */ |
| 1253 | return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + |
| 1254 | nla_total_size(0); |
| 1255 | } |
| 1256 | |
| 1257 | static int br_fill_linkxstats(struct sk_buff *skb, const struct net_device *dev, |
| 1258 | int *prividx) |
| 1259 | { |
| 1260 | struct net_bridge *br = netdev_priv(dev); |
| 1261 | struct net_bridge_vlan_group *vg; |
| 1262 | struct net_bridge_vlan *v; |
| 1263 | struct nlattr *nest; |
| 1264 | int vl_idx = 0; |
| 1265 | |
| 1266 | vg = br_vlan_group(br); |
| 1267 | if (!vg) |
| 1268 | goto out; |
| 1269 | nest = nla_nest_start(skb, LINK_XSTATS_TYPE_BRIDGE); |
| 1270 | if (!nest) |
| 1271 | return -EMSGSIZE; |
| 1272 | list_for_each_entry(v, &vg->vlan_list, vlist) { |
| 1273 | struct bridge_vlan_xstats vxi; |
| 1274 | struct br_vlan_stats stats; |
| 1275 | |
| 1276 | if (++vl_idx < *prividx) |
| 1277 | continue; |
| 1278 | memset(&vxi, 0, sizeof(vxi)); |
| 1279 | vxi.vid = v->vid; |
| 1280 | br_vlan_get_stats(v, &stats); |
| 1281 | vxi.rx_bytes = stats.rx_bytes; |
| 1282 | vxi.rx_packets = stats.rx_packets; |
| 1283 | vxi.tx_bytes = stats.tx_bytes; |
| 1284 | vxi.tx_packets = stats.tx_packets; |
| 1285 | |
| 1286 | if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) |
| 1287 | goto nla_put_failure; |
| 1288 | } |
| 1289 | nla_nest_end(skb, nest); |
| 1290 | *prividx = 0; |
| 1291 | out: |
| 1292 | return 0; |
| 1293 | |
| 1294 | nla_put_failure: |
| 1295 | nla_nest_end(skb, nest); |
| 1296 | *prividx = vl_idx; |
| 1297 | |
| 1298 | return -EMSGSIZE; |
| 1299 | } |
| 1300 | |
| 1301 | static struct rtnl_af_ops br_af_ops __read_mostly = { |
| 1302 | .family = AF_BRIDGE, |
| 1303 | .get_link_af_size = br_get_link_af_size_filtered, |
| 1304 | }; |
| 1305 | |
| 1306 | struct rtnl_link_ops br_link_ops __read_mostly = { |
| 1307 | .kind = "bridge", |
| 1308 | .priv_size = sizeof(struct net_bridge), |
| 1309 | .setup = br_dev_setup, |
| 1310 | .maxtype = IFLA_BR_MAX, |
| 1311 | .policy = br_policy, |
| 1312 | .validate = br_validate, |
| 1313 | .newlink = br_dev_newlink, |
| 1314 | .changelink = br_changelink, |
| 1315 | .dellink = br_dev_delete, |
| 1316 | .get_size = br_get_size, |
| 1317 | .fill_info = br_fill_info, |
| 1318 | .fill_linkxstats = br_fill_linkxstats, |
| 1319 | .get_linkxstats_size = br_get_linkxstats_size, |
| 1320 | |
| 1321 | .slave_maxtype = IFLA_BRPORT_MAX, |
| 1322 | .slave_policy = br_port_policy, |
| 1323 | .slave_changelink = br_port_slave_changelink, |
| 1324 | .get_slave_size = br_port_get_slave_size, |
| 1325 | .fill_slave_info = br_port_fill_slave_info, |
| 1326 | }; |
| 1327 | |
| 1328 | int __init br_netlink_init(void) |
| 1329 | { |
| 1330 | int err; |
| 1331 | |
| 1332 | br_mdb_init(); |
| 1333 | rtnl_af_register(&br_af_ops); |
| 1334 | |
| 1335 | err = rtnl_link_register(&br_link_ops); |
| 1336 | if (err) |
| 1337 | goto out_af; |
| 1338 | |
| 1339 | return 0; |
| 1340 | |
| 1341 | out_af: |
| 1342 | rtnl_af_unregister(&br_af_ops); |
| 1343 | br_mdb_uninit(); |
| 1344 | return err; |
| 1345 | } |
| 1346 | |
| 1347 | void br_netlink_fini(void) |
| 1348 | { |
| 1349 | br_mdb_uninit(); |
| 1350 | rtnl_af_unregister(&br_af_ops); |
| 1351 | rtnl_link_unregister(&br_link_ops); |
| 1352 | } |