| 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_tunnel.h" |
| 20 | |
| 21 | static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg, |
| 22 | u32 filter_mask) |
| 23 | { |
| 24 | struct net_bridge_vlan *v; |
| 25 | u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; |
| 26 | u16 flags, pvid; |
| 27 | int num_vlans = 0; |
| 28 | |
| 29 | if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) |
| 30 | return 0; |
| 31 | |
| 32 | pvid = br_get_pvid(vg); |
| 33 | /* Count number of vlan infos */ |
| 34 | list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| 35 | flags = 0; |
| 36 | /* only a context, bridge vlan not activated */ |
| 37 | if (!br_vlan_should_use(v)) |
| 38 | continue; |
| 39 | if (v->vid == pvid) |
| 40 | flags |= BRIDGE_VLAN_INFO_PVID; |
| 41 | |
| 42 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| 43 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| 44 | |
| 45 | if (vid_range_start == 0) { |
| 46 | goto initvars; |
| 47 | } else if ((v->vid - vid_range_end) == 1 && |
| 48 | flags == vid_range_flags) { |
| 49 | vid_range_end = v->vid; |
| 50 | continue; |
| 51 | } else { |
| 52 | if ((vid_range_end - vid_range_start) > 0) |
| 53 | num_vlans += 2; |
| 54 | else |
| 55 | num_vlans += 1; |
| 56 | } |
| 57 | initvars: |
| 58 | vid_range_start = v->vid; |
| 59 | vid_range_end = v->vid; |
| 60 | vid_range_flags = flags; |
| 61 | } |
| 62 | |
| 63 | if (vid_range_start != 0) { |
| 64 | if ((vid_range_end - vid_range_start) > 0) |
| 65 | num_vlans += 2; |
| 66 | else |
| 67 | num_vlans += 1; |
| 68 | } |
| 69 | |
| 70 | return num_vlans; |
| 71 | } |
| 72 | |
| 73 | static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg, |
| 74 | u32 filter_mask) |
| 75 | { |
| 76 | int num_vlans; |
| 77 | |
| 78 | if (!vg) |
| 79 | return 0; |
| 80 | |
| 81 | if (filter_mask & RTEXT_FILTER_BRVLAN) |
| 82 | return vg->num_vlans; |
| 83 | |
| 84 | rcu_read_lock(); |
| 85 | num_vlans = __get_num_vlan_infos(vg, filter_mask); |
| 86 | rcu_read_unlock(); |
| 87 | |
| 88 | return num_vlans; |
| 89 | } |
| 90 | |
| 91 | static size_t br_get_link_af_size_filtered(const struct net_device *dev, |
| 92 | u32 filter_mask) |
| 93 | { |
| 94 | struct net_bridge_vlan_group *vg = NULL; |
| 95 | struct net_bridge_port *p = NULL; |
| 96 | struct net_bridge *br; |
| 97 | int num_vlan_infos; |
| 98 | size_t vinfo_sz = 0; |
| 99 | |
| 100 | rcu_read_lock(); |
| 101 | if (netif_is_bridge_port(dev)) { |
| 102 | p = br_port_get_rcu(dev); |
| 103 | vg = nbp_vlan_group_rcu(p); |
| 104 | } else if (dev->priv_flags & IFF_EBRIDGE) { |
| 105 | br = netdev_priv(dev); |
| 106 | vg = br_vlan_group_rcu(br); |
| 107 | } |
| 108 | num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask); |
| 109 | rcu_read_unlock(); |
| 110 | |
| 111 | if (p && (p->flags & BR_VLAN_TUNNEL)) |
| 112 | vinfo_sz += br_get_vlan_tunnel_info_size(vg); |
| 113 | |
| 114 | /* Each VLAN is returned in bridge_vlan_info along with flags */ |
| 115 | vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); |
| 116 | |
| 117 | return vinfo_sz; |
| 118 | } |
| 119 | |
| 120 | static inline size_t br_port_info_size(void) |
| 121 | { |
| 122 | return nla_total_size(1) /* IFLA_BRPORT_STATE */ |
| 123 | + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ |
| 124 | + nla_total_size(4) /* IFLA_BRPORT_COST */ |
| 125 | + nla_total_size(1) /* IFLA_BRPORT_MODE */ |
| 126 | + nla_total_size(1) /* IFLA_BRPORT_GUARD */ |
| 127 | + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ |
| 128 | + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ |
| 129 | + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */ |
| 130 | + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ |
| 131 | + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ |
| 132 | + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */ |
| 133 | + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */ |
| 134 | + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */ |
| 135 | + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */ |
| 136 | + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */ |
| 137 | + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */ |
| 138 | + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */ |
| 139 | + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */ |
| 140 | + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */ |
| 141 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */ |
| 142 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */ |
| 143 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */ |
| 144 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */ |
| 145 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */ |
| 146 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */ |
| 147 | + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */ |
| 148 | + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */ |
| 149 | + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */ |
| 150 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 151 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */ |
| 152 | #endif |
| 153 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */ |
| 154 | + 0; |
| 155 | } |
| 156 | |
| 157 | static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) |
| 158 | { |
| 159 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) |
| 160 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
| 161 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
| 162 | + nla_total_size(4) /* IFLA_MASTER */ |
| 163 | + nla_total_size(4) /* IFLA_MTU */ |
| 164 | + nla_total_size(4) /* IFLA_LINK */ |
| 165 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
| 166 | + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ |
| 167 | + nla_total_size(br_get_link_af_size_filtered(dev, |
| 168 | filter_mask)) /* IFLA_AF_SPEC */ |
| 169 | + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */ |
| 170 | } |
| 171 | |
| 172 | static int br_port_fill_attrs(struct sk_buff *skb, |
| 173 | const struct net_bridge_port *p) |
| 174 | { |
| 175 | u8 mode = !!(p->flags & BR_HAIRPIN_MODE); |
| 176 | struct net_bridge_port *backup_p; |
| 177 | u64 timerval; |
| 178 | |
| 179 | if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || |
| 180 | nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || |
| 181 | nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || |
| 182 | nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || |
| 183 | nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || |
| 184 | nla_put_u8(skb, IFLA_BRPORT_PROTECT, |
| 185 | !!(p->flags & BR_ROOT_BLOCK)) || |
| 186 | nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, |
| 187 | !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || |
| 188 | nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST, |
| 189 | !!(p->flags & BR_MULTICAST_TO_UNICAST)) || |
| 190 | nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || |
| 191 | nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, |
| 192 | !!(p->flags & BR_FLOOD)) || |
| 193 | nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD, |
| 194 | !!(p->flags & BR_MCAST_FLOOD)) || |
| 195 | nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD, |
| 196 | !!(p->flags & BR_BCAST_FLOOD)) || |
| 197 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || |
| 198 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, |
| 199 | !!(p->flags & BR_PROXYARP_WIFI)) || |
| 200 | nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id), |
| 201 | &p->designated_root) || |
| 202 | nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id), |
| 203 | &p->designated_bridge) || |
| 204 | nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) || |
| 205 | nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) || |
| 206 | nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) || |
| 207 | nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) || |
| 208 | nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, |
| 209 | p->topology_change_ack) || |
| 210 | nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) || |
| 211 | nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags & |
| 212 | BR_VLAN_TUNNEL)) || |
| 213 | nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) || |
| 214 | nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS, |
| 215 | !!(p->flags & BR_NEIGH_SUPPRESS)) || |
| 216 | nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED))) |
| 217 | return -EMSGSIZE; |
| 218 | |
| 219 | timerval = br_timer_value(&p->message_age_timer); |
| 220 | if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval, |
| 221 | IFLA_BRPORT_PAD)) |
| 222 | return -EMSGSIZE; |
| 223 | timerval = br_timer_value(&p->forward_delay_timer); |
| 224 | if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval, |
| 225 | IFLA_BRPORT_PAD)) |
| 226 | return -EMSGSIZE; |
| 227 | timerval = br_timer_value(&p->hold_timer); |
| 228 | if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval, |
| 229 | IFLA_BRPORT_PAD)) |
| 230 | return -EMSGSIZE; |
| 231 | |
| 232 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 233 | if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER, |
| 234 | p->multicast_router)) |
| 235 | return -EMSGSIZE; |
| 236 | #endif |
| 237 | |
| 238 | /* we might be called only with br->lock */ |
| 239 | rcu_read_lock(); |
| 240 | backup_p = rcu_dereference(p->backup_port); |
| 241 | if (backup_p) |
| 242 | nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT, |
| 243 | backup_p->dev->ifindex); |
| 244 | rcu_read_unlock(); |
| 245 | |
| 246 | return 0; |
| 247 | } |
| 248 | |
| 249 | static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, |
| 250 | u16 vid_end, u16 flags) |
| 251 | { |
| 252 | struct bridge_vlan_info vinfo; |
| 253 | |
| 254 | if ((vid_end - vid_start) > 0) { |
| 255 | /* add range to skb */ |
| 256 | vinfo.vid = vid_start; |
| 257 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; |
| 258 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 259 | sizeof(vinfo), &vinfo)) |
| 260 | goto nla_put_failure; |
| 261 | |
| 262 | vinfo.vid = vid_end; |
| 263 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; |
| 264 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 265 | sizeof(vinfo), &vinfo)) |
| 266 | goto nla_put_failure; |
| 267 | } else { |
| 268 | vinfo.vid = vid_start; |
| 269 | vinfo.flags = flags; |
| 270 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 271 | sizeof(vinfo), &vinfo)) |
| 272 | goto nla_put_failure; |
| 273 | } |
| 274 | |
| 275 | return 0; |
| 276 | |
| 277 | nla_put_failure: |
| 278 | return -EMSGSIZE; |
| 279 | } |
| 280 | |
| 281 | static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, |
| 282 | struct net_bridge_vlan_group *vg) |
| 283 | { |
| 284 | struct net_bridge_vlan *v; |
| 285 | u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; |
| 286 | u16 flags, pvid; |
| 287 | int err = 0; |
| 288 | |
| 289 | /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan |
| 290 | * and mark vlan info with begin and end flags |
| 291 | * if vlaninfo represents a range |
| 292 | */ |
| 293 | pvid = br_get_pvid(vg); |
| 294 | list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| 295 | flags = 0; |
| 296 | if (!br_vlan_should_use(v)) |
| 297 | continue; |
| 298 | if (v->vid == pvid) |
| 299 | flags |= BRIDGE_VLAN_INFO_PVID; |
| 300 | |
| 301 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| 302 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| 303 | |
| 304 | if (vid_range_start == 0) { |
| 305 | goto initvars; |
| 306 | } else if ((v->vid - vid_range_end) == 1 && |
| 307 | flags == vid_range_flags) { |
| 308 | vid_range_end = v->vid; |
| 309 | continue; |
| 310 | } else { |
| 311 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, |
| 312 | vid_range_end, |
| 313 | vid_range_flags); |
| 314 | if (err) |
| 315 | return err; |
| 316 | } |
| 317 | |
| 318 | initvars: |
| 319 | vid_range_start = v->vid; |
| 320 | vid_range_end = v->vid; |
| 321 | vid_range_flags = flags; |
| 322 | } |
| 323 | |
| 324 | if (vid_range_start != 0) { |
| 325 | /* Call it once more to send any left over vlans */ |
| 326 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, |
| 327 | vid_range_end, |
| 328 | vid_range_flags); |
| 329 | if (err) |
| 330 | return err; |
| 331 | } |
| 332 | |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | static int br_fill_ifvlaninfo(struct sk_buff *skb, |
| 337 | struct net_bridge_vlan_group *vg) |
| 338 | { |
| 339 | struct bridge_vlan_info vinfo; |
| 340 | struct net_bridge_vlan *v; |
| 341 | u16 pvid; |
| 342 | |
| 343 | pvid = br_get_pvid(vg); |
| 344 | list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| 345 | if (!br_vlan_should_use(v)) |
| 346 | continue; |
| 347 | |
| 348 | vinfo.vid = v->vid; |
| 349 | vinfo.flags = 0; |
| 350 | if (v->vid == pvid) |
| 351 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; |
| 352 | |
| 353 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| 354 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| 355 | |
| 356 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 357 | sizeof(vinfo), &vinfo)) |
| 358 | goto nla_put_failure; |
| 359 | } |
| 360 | |
| 361 | return 0; |
| 362 | |
| 363 | nla_put_failure: |
| 364 | return -EMSGSIZE; |
| 365 | } |
| 366 | |
| 367 | /* |
| 368 | * Create one netlink message for one interface |
| 369 | * Contains port and master info as well as carrier and bridge state. |
| 370 | */ |
| 371 | static int br_fill_ifinfo(struct sk_buff *skb, |
| 372 | const struct net_bridge_port *port, |
| 373 | u32 pid, u32 seq, int event, unsigned int flags, |
| 374 | u32 filter_mask, const struct net_device *dev) |
| 375 | { |
| 376 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
| 377 | struct net_bridge *br; |
| 378 | struct ifinfomsg *hdr; |
| 379 | struct nlmsghdr *nlh; |
| 380 | |
| 381 | if (port) |
| 382 | br = port->br; |
| 383 | else |
| 384 | br = netdev_priv(dev); |
| 385 | |
| 386 | br_debug(br, "br_fill_info event %d port %s master %s\n", |
| 387 | event, dev->name, br->dev->name); |
| 388 | |
| 389 | nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); |
| 390 | if (nlh == NULL) |
| 391 | return -EMSGSIZE; |
| 392 | |
| 393 | hdr = nlmsg_data(nlh); |
| 394 | hdr->ifi_family = AF_BRIDGE; |
| 395 | hdr->__ifi_pad = 0; |
| 396 | hdr->ifi_type = dev->type; |
| 397 | hdr->ifi_index = dev->ifindex; |
| 398 | hdr->ifi_flags = dev_get_flags(dev); |
| 399 | hdr->ifi_change = 0; |
| 400 | |
| 401 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
| 402 | nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || |
| 403 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || |
| 404 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || |
| 405 | (dev->addr_len && |
| 406 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || |
| 407 | (dev->ifindex != dev_get_iflink(dev) && |
| 408 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) |
| 409 | goto nla_put_failure; |
| 410 | |
| 411 | if (event == RTM_NEWLINK && port) { |
| 412 | struct nlattr *nest; |
| 413 | |
| 414 | nest = nla_nest_start(skb, IFLA_PROTINFO); |
| 415 | if (nest == NULL || br_port_fill_attrs(skb, port) < 0) |
| 416 | goto nla_put_failure; |
| 417 | nla_nest_end(skb, nest); |
| 418 | } |
| 419 | |
| 420 | /* Check if the VID information is requested */ |
| 421 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || |
| 422 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { |
| 423 | struct net_bridge_vlan_group *vg; |
| 424 | struct nlattr *af; |
| 425 | int err; |
| 426 | |
| 427 | /* RCU needed because of the VLAN locking rules (rcu || rtnl) */ |
| 428 | rcu_read_lock(); |
| 429 | if (port) |
| 430 | vg = nbp_vlan_group_rcu(port); |
| 431 | else |
| 432 | vg = br_vlan_group_rcu(br); |
| 433 | |
| 434 | if (!vg || !vg->num_vlans) { |
| 435 | rcu_read_unlock(); |
| 436 | goto done; |
| 437 | } |
| 438 | af = nla_nest_start_noflag(skb, IFLA_AF_SPEC); |
| 439 | if (!af) { |
| 440 | rcu_read_unlock(); |
| 441 | goto nla_put_failure; |
| 442 | } |
| 443 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) |
| 444 | err = br_fill_ifvlaninfo_compressed(skb, vg); |
| 445 | else |
| 446 | err = br_fill_ifvlaninfo(skb, vg); |
| 447 | |
| 448 | if (port && (port->flags & BR_VLAN_TUNNEL)) |
| 449 | err = br_fill_vlan_tunnel_info(skb, vg); |
| 450 | rcu_read_unlock(); |
| 451 | if (err) |
| 452 | goto nla_put_failure; |
| 453 | nla_nest_end(skb, af); |
| 454 | } |
| 455 | |
| 456 | done: |
| 457 | nlmsg_end(skb, nlh); |
| 458 | return 0; |
| 459 | |
| 460 | nla_put_failure: |
| 461 | nlmsg_cancel(skb, nlh); |
| 462 | return -EMSGSIZE; |
| 463 | } |
| 464 | |
| 465 | /* Notify listeners of a change in bridge or port information */ |
| 466 | void br_ifinfo_notify(int event, const struct net_bridge *br, |
| 467 | const struct net_bridge_port *port) |
| 468 | { |
| 469 | u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; |
| 470 | struct net_device *dev; |
| 471 | struct sk_buff *skb; |
| 472 | int err = -ENOBUFS; |
| 473 | struct net *net; |
| 474 | u16 port_no = 0; |
| 475 | |
| 476 | if (WARN_ON(!port && !br)) |
| 477 | return; |
| 478 | |
| 479 | if (port) { |
| 480 | dev = port->dev; |
| 481 | br = port->br; |
| 482 | port_no = port->port_no; |
| 483 | } else { |
| 484 | dev = br->dev; |
| 485 | } |
| 486 | |
| 487 | net = dev_net(dev); |
| 488 | br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event); |
| 489 | |
| 490 | skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC); |
| 491 | if (skb == NULL) |
| 492 | goto errout; |
| 493 | |
| 494 | err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev); |
| 495 | if (err < 0) { |
| 496 | /* -EMSGSIZE implies BUG in br_nlmsg_size() */ |
| 497 | WARN_ON(err == -EMSGSIZE); |
| 498 | kfree_skb(skb); |
| 499 | goto errout; |
| 500 | } |
| 501 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
| 502 | return; |
| 503 | errout: |
| 504 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
| 505 | } |
| 506 | |
| 507 | /* |
| 508 | * Dump information about all ports, in response to GETLINK |
| 509 | */ |
| 510 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
| 511 | struct net_device *dev, u32 filter_mask, int nlflags) |
| 512 | { |
| 513 | struct net_bridge_port *port = br_port_get_rtnl(dev); |
| 514 | |
| 515 | if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && |
| 516 | !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) |
| 517 | return 0; |
| 518 | |
| 519 | return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, |
| 520 | filter_mask, dev); |
| 521 | } |
| 522 | |
| 523 | static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, |
| 524 | int cmd, struct bridge_vlan_info *vinfo, bool *changed, |
| 525 | struct netlink_ext_ack *extack) |
| 526 | { |
| 527 | bool curr_change; |
| 528 | int err = 0; |
| 529 | |
| 530 | switch (cmd) { |
| 531 | case RTM_SETLINK: |
| 532 | if (p) { |
| 533 | /* if the MASTER flag is set this will act on the global |
| 534 | * per-VLAN entry as well |
| 535 | */ |
| 536 | err = nbp_vlan_add(p, vinfo->vid, vinfo->flags, |
| 537 | &curr_change, extack); |
| 538 | } else { |
| 539 | vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; |
| 540 | err = br_vlan_add(br, vinfo->vid, vinfo->flags, |
| 541 | &curr_change, extack); |
| 542 | } |
| 543 | if (curr_change) |
| 544 | *changed = true; |
| 545 | break; |
| 546 | |
| 547 | case RTM_DELLINK: |
| 548 | if (p) { |
| 549 | if (!nbp_vlan_delete(p, vinfo->vid)) |
| 550 | *changed = true; |
| 551 | |
| 552 | if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) && |
| 553 | !br_vlan_delete(p->br, vinfo->vid)) |
| 554 | *changed = true; |
| 555 | } else if (!br_vlan_delete(br, vinfo->vid)) { |
| 556 | *changed = true; |
| 557 | } |
| 558 | break; |
| 559 | } |
| 560 | |
| 561 | return err; |
| 562 | } |
| 563 | |
| 564 | static int br_process_vlan_info(struct net_bridge *br, |
| 565 | struct net_bridge_port *p, int cmd, |
| 566 | struct bridge_vlan_info *vinfo_curr, |
| 567 | struct bridge_vlan_info **vinfo_last, |
| 568 | bool *changed, |
| 569 | struct netlink_ext_ack *extack) |
| 570 | { |
| 571 | if (!vinfo_curr->vid || vinfo_curr->vid >= VLAN_VID_MASK) |
| 572 | return -EINVAL; |
| 573 | |
| 574 | if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
| 575 | /* check if we are already processing a range */ |
| 576 | if (*vinfo_last) |
| 577 | return -EINVAL; |
| 578 | *vinfo_last = vinfo_curr; |
| 579 | /* don't allow range of pvids */ |
| 580 | if ((*vinfo_last)->flags & BRIDGE_VLAN_INFO_PVID) |
| 581 | return -EINVAL; |
| 582 | return 0; |
| 583 | } |
| 584 | |
| 585 | if (*vinfo_last) { |
| 586 | struct bridge_vlan_info tmp_vinfo; |
| 587 | int v, err; |
| 588 | |
| 589 | if (!(vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END)) |
| 590 | return -EINVAL; |
| 591 | |
| 592 | if (vinfo_curr->vid <= (*vinfo_last)->vid) |
| 593 | return -EINVAL; |
| 594 | |
| 595 | memcpy(&tmp_vinfo, *vinfo_last, |
| 596 | sizeof(struct bridge_vlan_info)); |
| 597 | for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) { |
| 598 | tmp_vinfo.vid = v; |
| 599 | err = br_vlan_info(br, p, cmd, &tmp_vinfo, changed, |
| 600 | extack); |
| 601 | if (err) |
| 602 | break; |
| 603 | } |
| 604 | *vinfo_last = NULL; |
| 605 | |
| 606 | return err; |
| 607 | } |
| 608 | |
| 609 | return br_vlan_info(br, p, cmd, vinfo_curr, changed, extack); |
| 610 | } |
| 611 | |
| 612 | static int br_afspec(struct net_bridge *br, |
| 613 | struct net_bridge_port *p, |
| 614 | struct nlattr *af_spec, |
| 615 | int cmd, bool *changed, |
| 616 | struct netlink_ext_ack *extack) |
| 617 | { |
| 618 | struct bridge_vlan_info *vinfo_curr = NULL; |
| 619 | struct bridge_vlan_info *vinfo_last = NULL; |
| 620 | struct nlattr *attr; |
| 621 | struct vtunnel_info tinfo_last = {}; |
| 622 | struct vtunnel_info tinfo_curr = {}; |
| 623 | int err = 0, rem; |
| 624 | |
| 625 | nla_for_each_nested(attr, af_spec, rem) { |
| 626 | err = 0; |
| 627 | switch (nla_type(attr)) { |
| 628 | case IFLA_BRIDGE_VLAN_TUNNEL_INFO: |
| 629 | if (!p || !(p->flags & BR_VLAN_TUNNEL)) |
| 630 | return -EINVAL; |
| 631 | err = br_parse_vlan_tunnel_info(attr, &tinfo_curr); |
| 632 | if (err) |
| 633 | return err; |
| 634 | err = br_process_vlan_tunnel_info(br, p, cmd, |
| 635 | &tinfo_curr, |
| 636 | &tinfo_last, |
| 637 | changed); |
| 638 | if (err) |
| 639 | return err; |
| 640 | break; |
| 641 | case IFLA_BRIDGE_VLAN_INFO: |
| 642 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) |
| 643 | return -EINVAL; |
| 644 | vinfo_curr = nla_data(attr); |
| 645 | err = br_process_vlan_info(br, p, cmd, vinfo_curr, |
| 646 | &vinfo_last, changed, |
| 647 | extack); |
| 648 | if (err) |
| 649 | return err; |
| 650 | break; |
| 651 | } |
| 652 | } |
| 653 | |
| 654 | return err; |
| 655 | } |
| 656 | |
| 657 | static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { |
| 658 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, |
| 659 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, |
| 660 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, |
| 661 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, |
| 662 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, |
| 663 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, |
| 664 | [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, |
| 665 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, |
| 666 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, |
| 667 | [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, |
| 668 | [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, |
| 669 | [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, |
| 670 | [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 }, |
| 671 | [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 }, |
| 672 | [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 }, |
| 673 | [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 }, |
| 674 | [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 }, |
| 675 | [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 }, |
| 676 | [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 }, |
| 677 | [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 }, |
| 678 | }; |
| 679 | |
| 680 | /* Change the state of the port and notify spanning tree */ |
| 681 | static int br_set_port_state(struct net_bridge_port *p, u8 state) |
| 682 | { |
| 683 | if (state > BR_STATE_BLOCKING) |
| 684 | return -EINVAL; |
| 685 | |
| 686 | /* if kernel STP is running, don't allow changes */ |
| 687 | if (p->br->stp_enabled == BR_KERNEL_STP) |
| 688 | return -EBUSY; |
| 689 | |
| 690 | /* if device is not up, change is not allowed |
| 691 | * if link is not present, only allowable state is disabled |
| 692 | */ |
| 693 | if (!netif_running(p->dev) || |
| 694 | (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) |
| 695 | return -ENETDOWN; |
| 696 | |
| 697 | br_set_state(p, state); |
| 698 | br_port_state_selection(p->br); |
| 699 | return 0; |
| 700 | } |
| 701 | |
| 702 | /* Set/clear or port flags based on attribute */ |
| 703 | static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], |
| 704 | int attrtype, unsigned long mask) |
| 705 | { |
| 706 | unsigned long flags; |
| 707 | int err; |
| 708 | |
| 709 | if (!tb[attrtype]) |
| 710 | return 0; |
| 711 | |
| 712 | if (nla_get_u8(tb[attrtype])) |
| 713 | flags = p->flags | mask; |
| 714 | else |
| 715 | flags = p->flags & ~mask; |
| 716 | |
| 717 | err = br_switchdev_set_port_flag(p, flags, mask); |
| 718 | if (err) |
| 719 | return err; |
| 720 | |
| 721 | p->flags = flags; |
| 722 | return 0; |
| 723 | } |
| 724 | |
| 725 | /* Process bridge protocol info on port */ |
| 726 | static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) |
| 727 | { |
| 728 | unsigned long old_flags = p->flags; |
| 729 | bool br_vlan_tunnel_old = false; |
| 730 | int err; |
| 731 | |
| 732 | err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); |
| 733 | if (err) |
| 734 | return err; |
| 735 | |
| 736 | err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); |
| 737 | if (err) |
| 738 | return err; |
| 739 | |
| 740 | err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); |
| 741 | if (err) |
| 742 | return err; |
| 743 | |
| 744 | err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); |
| 745 | if (err) |
| 746 | return err; |
| 747 | |
| 748 | err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); |
| 749 | if (err) |
| 750 | return err; |
| 751 | |
| 752 | err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); |
| 753 | if (err) |
| 754 | return err; |
| 755 | |
| 756 | err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); |
| 757 | if (err) |
| 758 | return err; |
| 759 | |
| 760 | err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); |
| 761 | if (err) |
| 762 | return err; |
| 763 | |
| 764 | err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); |
| 765 | if (err) |
| 766 | return err; |
| 767 | |
| 768 | err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); |
| 769 | if (err) |
| 770 | return err; |
| 771 | |
| 772 | err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); |
| 773 | if (err) |
| 774 | return err; |
| 775 | |
| 776 | br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; |
| 777 | err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); |
| 778 | if (err) |
| 779 | return err; |
| 780 | |
| 781 | if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) |
| 782 | nbp_vlan_tunnel_info_flush(p); |
| 783 | |
| 784 | if (tb[IFLA_BRPORT_COST]) { |
| 785 | err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); |
| 786 | if (err) |
| 787 | return err; |
| 788 | } |
| 789 | |
| 790 | if (tb[IFLA_BRPORT_PRIORITY]) { |
| 791 | err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); |
| 792 | if (err) |
| 793 | return err; |
| 794 | } |
| 795 | |
| 796 | if (tb[IFLA_BRPORT_STATE]) { |
| 797 | err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); |
| 798 | if (err) |
| 799 | return err; |
| 800 | } |
| 801 | |
| 802 | if (tb[IFLA_BRPORT_FLUSH]) |
| 803 | br_fdb_delete_by_port(p->br, p, 0, 0); |
| 804 | |
| 805 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 806 | if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { |
| 807 | u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); |
| 808 | |
| 809 | err = br_multicast_set_port_router(p, mcast_router); |
| 810 | if (err) |
| 811 | return err; |
| 812 | } |
| 813 | #endif |
| 814 | |
| 815 | if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) { |
| 816 | u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]); |
| 817 | |
| 818 | if (fwd_mask & BR_GROUPFWD_MACPAUSE) |
| 819 | return -EINVAL; |
| 820 | p->group_fwd_mask = fwd_mask; |
| 821 | } |
| 822 | |
| 823 | err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, |
| 824 | BR_NEIGH_SUPPRESS); |
| 825 | if (err) |
| 826 | return err; |
| 827 | |
| 828 | err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); |
| 829 | if (err) |
| 830 | return err; |
| 831 | |
| 832 | if (tb[IFLA_BRPORT_BACKUP_PORT]) { |
| 833 | struct net_device *backup_dev = NULL; |
| 834 | u32 backup_ifindex; |
| 835 | |
| 836 | backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]); |
| 837 | if (backup_ifindex) { |
| 838 | backup_dev = __dev_get_by_index(dev_net(p->dev), |
| 839 | backup_ifindex); |
| 840 | if (!backup_dev) |
| 841 | return -ENOENT; |
| 842 | } |
| 843 | |
| 844 | err = nbp_backup_change(p, backup_dev); |
| 845 | if (err) |
| 846 | return err; |
| 847 | } |
| 848 | |
| 849 | br_port_flags_change(p, old_flags ^ p->flags); |
| 850 | return 0; |
| 851 | } |
| 852 | |
| 853 | /* Change state and parameters on port. */ |
| 854 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, |
| 855 | struct netlink_ext_ack *extack) |
| 856 | { |
| 857 | struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); |
| 858 | struct nlattr *tb[IFLA_BRPORT_MAX + 1]; |
| 859 | struct net_bridge_port *p; |
| 860 | struct nlattr *protinfo; |
| 861 | struct nlattr *afspec; |
| 862 | bool changed = false; |
| 863 | int err = 0; |
| 864 | |
| 865 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); |
| 866 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
| 867 | if (!protinfo && !afspec) |
| 868 | return 0; |
| 869 | |
| 870 | p = br_port_get_rtnl(dev); |
| 871 | /* We want to accept dev as bridge itself if the AF_SPEC |
| 872 | * is set to see if someone is setting vlan info on the bridge |
| 873 | */ |
| 874 | if (!p && !afspec) |
| 875 | return -EINVAL; |
| 876 | |
| 877 | if (p && protinfo) { |
| 878 | if (protinfo->nla_type & NLA_F_NESTED) { |
| 879 | err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX, |
| 880 | protinfo, |
| 881 | br_port_policy, |
| 882 | NULL); |
| 883 | if (err) |
| 884 | return err; |
| 885 | |
| 886 | spin_lock_bh(&p->br->lock); |
| 887 | err = br_setport(p, tb); |
| 888 | spin_unlock_bh(&p->br->lock); |
| 889 | } else { |
| 890 | /* Binary compatibility with old RSTP */ |
| 891 | if (nla_len(protinfo) < sizeof(u8)) |
| 892 | return -EINVAL; |
| 893 | |
| 894 | spin_lock_bh(&p->br->lock); |
| 895 | err = br_set_port_state(p, nla_get_u8(protinfo)); |
| 896 | spin_unlock_bh(&p->br->lock); |
| 897 | } |
| 898 | if (err) |
| 899 | goto out; |
| 900 | changed = true; |
| 901 | } |
| 902 | |
| 903 | if (afspec) |
| 904 | err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack); |
| 905 | |
| 906 | if (changed) |
| 907 | br_ifinfo_notify(RTM_NEWLINK, br, p); |
| 908 | out: |
| 909 | return err; |
| 910 | } |
| 911 | |
| 912 | /* Delete port information */ |
| 913 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) |
| 914 | { |
| 915 | struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); |
| 916 | struct net_bridge_port *p; |
| 917 | struct nlattr *afspec; |
| 918 | bool changed = false; |
| 919 | int err = 0; |
| 920 | |
| 921 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
| 922 | if (!afspec) |
| 923 | return 0; |
| 924 | |
| 925 | p = br_port_get_rtnl(dev); |
| 926 | /* We want to accept dev as bridge itself as well */ |
| 927 | if (!p && !(dev->priv_flags & IFF_EBRIDGE)) |
| 928 | return -EINVAL; |
| 929 | |
| 930 | err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL); |
| 931 | if (changed) |
| 932 | /* Send RTM_NEWLINK because userspace |
| 933 | * expects RTM_NEWLINK for vlan dels |
| 934 | */ |
| 935 | br_ifinfo_notify(RTM_NEWLINK, br, p); |
| 936 | |
| 937 | return err; |
| 938 | } |
| 939 | |
| 940 | static int br_validate(struct nlattr *tb[], struct nlattr *data[], |
| 941 | struct netlink_ext_ack *extack) |
| 942 | { |
| 943 | if (tb[IFLA_ADDRESS]) { |
| 944 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) |
| 945 | return -EINVAL; |
| 946 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) |
| 947 | return -EADDRNOTAVAIL; |
| 948 | } |
| 949 | |
| 950 | if (!data) |
| 951 | return 0; |
| 952 | |
| 953 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 954 | if (data[IFLA_BR_VLAN_PROTOCOL]) { |
| 955 | switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) { |
| 956 | case htons(ETH_P_8021Q): |
| 957 | case htons(ETH_P_8021AD): |
| 958 | break; |
| 959 | default: |
| 960 | return -EPROTONOSUPPORT; |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { |
| 965 | __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); |
| 966 | |
| 967 | if (defpvid >= VLAN_VID_MASK) |
| 968 | return -EINVAL; |
| 969 | } |
| 970 | #endif |
| 971 | |
| 972 | return 0; |
| 973 | } |
| 974 | |
| 975 | static int br_port_slave_changelink(struct net_device *brdev, |
| 976 | struct net_device *dev, |
| 977 | struct nlattr *tb[], |
| 978 | struct nlattr *data[], |
| 979 | struct netlink_ext_ack *extack) |
| 980 | { |
| 981 | struct net_bridge *br = netdev_priv(brdev); |
| 982 | int ret; |
| 983 | |
| 984 | if (!data) |
| 985 | return 0; |
| 986 | |
| 987 | spin_lock_bh(&br->lock); |
| 988 | ret = br_setport(br_port_get_rtnl(dev), data); |
| 989 | spin_unlock_bh(&br->lock); |
| 990 | |
| 991 | return ret; |
| 992 | } |
| 993 | |
| 994 | static int br_port_fill_slave_info(struct sk_buff *skb, |
| 995 | const struct net_device *brdev, |
| 996 | const struct net_device *dev) |
| 997 | { |
| 998 | return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); |
| 999 | } |
| 1000 | |
| 1001 | static size_t br_port_get_slave_size(const struct net_device *brdev, |
| 1002 | const struct net_device *dev) |
| 1003 | { |
| 1004 | return br_port_info_size(); |
| 1005 | } |
| 1006 | |
| 1007 | static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { |
| 1008 | [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, |
| 1009 | [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, |
| 1010 | [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, |
| 1011 | [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, |
| 1012 | [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, |
| 1013 | [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, |
| 1014 | [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, |
| 1015 | [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, |
| 1016 | [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, |
| 1017 | [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, |
| 1018 | .len = ETH_ALEN }, |
| 1019 | [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, |
| 1020 | [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, |
| 1021 | [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, |
| 1022 | [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, |
| 1023 | [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, |
| 1024 | [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, |
| 1025 | [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, |
| 1026 | [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, |
| 1027 | [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, |
| 1028 | [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, |
| 1029 | [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, |
| 1030 | [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, |
| 1031 | [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, |
| 1032 | [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, |
| 1033 | [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, |
| 1034 | [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, |
| 1035 | [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, |
| 1036 | [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, |
| 1037 | [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, |
| 1038 | [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 }, |
| 1039 | [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, |
| 1040 | [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 }, |
| 1041 | [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 }, |
| 1042 | [IFLA_BR_MULTI_BOOLOPT] = { .type = NLA_EXACT_LEN, |
| 1043 | .len = sizeof(struct br_boolopt_multi) }, |
| 1044 | }; |
| 1045 | |
| 1046 | static int br_changelink(struct net_device *brdev, struct nlattr *tb[], |
| 1047 | struct nlattr *data[], |
| 1048 | struct netlink_ext_ack *extack) |
| 1049 | { |
| 1050 | struct net_bridge *br = netdev_priv(brdev); |
| 1051 | int err; |
| 1052 | |
| 1053 | if (!data) |
| 1054 | return 0; |
| 1055 | |
| 1056 | if (data[IFLA_BR_FORWARD_DELAY]) { |
| 1057 | err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); |
| 1058 | if (err) |
| 1059 | return err; |
| 1060 | } |
| 1061 | |
| 1062 | if (data[IFLA_BR_HELLO_TIME]) { |
| 1063 | err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); |
| 1064 | if (err) |
| 1065 | return err; |
| 1066 | } |
| 1067 | |
| 1068 | if (data[IFLA_BR_MAX_AGE]) { |
| 1069 | err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); |
| 1070 | if (err) |
| 1071 | return err; |
| 1072 | } |
| 1073 | |
| 1074 | if (data[IFLA_BR_AGEING_TIME]) { |
| 1075 | err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); |
| 1076 | if (err) |
| 1077 | return err; |
| 1078 | } |
| 1079 | |
| 1080 | if (data[IFLA_BR_STP_STATE]) { |
| 1081 | u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); |
| 1082 | |
| 1083 | br_stp_set_enabled(br, stp_enabled); |
| 1084 | } |
| 1085 | |
| 1086 | if (data[IFLA_BR_PRIORITY]) { |
| 1087 | u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); |
| 1088 | |
| 1089 | br_stp_set_bridge_priority(br, priority); |
| 1090 | } |
| 1091 | |
| 1092 | if (data[IFLA_BR_VLAN_FILTERING]) { |
| 1093 | u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); |
| 1094 | |
| 1095 | err = __br_vlan_filter_toggle(br, vlan_filter); |
| 1096 | if (err) |
| 1097 | return err; |
| 1098 | } |
| 1099 | |
| 1100 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 1101 | if (data[IFLA_BR_VLAN_PROTOCOL]) { |
| 1102 | __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); |
| 1103 | |
| 1104 | err = __br_vlan_set_proto(br, vlan_proto); |
| 1105 | if (err) |
| 1106 | return err; |
| 1107 | } |
| 1108 | |
| 1109 | if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { |
| 1110 | __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); |
| 1111 | |
| 1112 | err = __br_vlan_set_default_pvid(br, defpvid, extack); |
| 1113 | if (err) |
| 1114 | return err; |
| 1115 | } |
| 1116 | |
| 1117 | if (data[IFLA_BR_VLAN_STATS_ENABLED]) { |
| 1118 | __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); |
| 1119 | |
| 1120 | err = br_vlan_set_stats(br, vlan_stats); |
| 1121 | if (err) |
| 1122 | return err; |
| 1123 | } |
| 1124 | |
| 1125 | if (data[IFLA_BR_VLAN_STATS_PER_PORT]) { |
| 1126 | __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]); |
| 1127 | |
| 1128 | err = br_vlan_set_stats_per_port(br, per_port); |
| 1129 | if (err) |
| 1130 | return err; |
| 1131 | } |
| 1132 | #endif |
| 1133 | |
| 1134 | if (data[IFLA_BR_GROUP_FWD_MASK]) { |
| 1135 | u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); |
| 1136 | |
| 1137 | if (fwd_mask & BR_GROUPFWD_RESTRICTED) |
| 1138 | return -EINVAL; |
| 1139 | br->group_fwd_mask = fwd_mask; |
| 1140 | } |
| 1141 | |
| 1142 | if (data[IFLA_BR_GROUP_ADDR]) { |
| 1143 | u8 new_addr[ETH_ALEN]; |
| 1144 | |
| 1145 | if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) |
| 1146 | return -EINVAL; |
| 1147 | memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); |
| 1148 | if (!is_link_local_ether_addr(new_addr)) |
| 1149 | return -EINVAL; |
| 1150 | if (new_addr[5] == 1 || /* 802.3x Pause address */ |
| 1151 | new_addr[5] == 2 || /* 802.3ad Slow protocols */ |
| 1152 | new_addr[5] == 3) /* 802.1X PAE address */ |
| 1153 | return -EINVAL; |
| 1154 | spin_lock_bh(&br->lock); |
| 1155 | memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); |
| 1156 | spin_unlock_bh(&br->lock); |
| 1157 | br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); |
| 1158 | br_recalculate_fwd_mask(br); |
| 1159 | } |
| 1160 | |
| 1161 | if (data[IFLA_BR_FDB_FLUSH]) |
| 1162 | br_fdb_flush(br); |
| 1163 | |
| 1164 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1165 | if (data[IFLA_BR_MCAST_ROUTER]) { |
| 1166 | u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); |
| 1167 | |
| 1168 | err = br_multicast_set_router(br, multicast_router); |
| 1169 | if (err) |
| 1170 | return err; |
| 1171 | } |
| 1172 | |
| 1173 | if (data[IFLA_BR_MCAST_SNOOPING]) { |
| 1174 | u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); |
| 1175 | |
| 1176 | br_multicast_toggle(br, mcast_snooping); |
| 1177 | } |
| 1178 | |
| 1179 | if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { |
| 1180 | u8 val; |
| 1181 | |
| 1182 | val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); |
| 1183 | br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); |
| 1184 | } |
| 1185 | |
| 1186 | if (data[IFLA_BR_MCAST_QUERIER]) { |
| 1187 | u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); |
| 1188 | |
| 1189 | err = br_multicast_set_querier(br, mcast_querier); |
| 1190 | if (err) |
| 1191 | return err; |
| 1192 | } |
| 1193 | |
| 1194 | if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) |
| 1195 | br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n", |
| 1196 | RHT_ELASTICITY); |
| 1197 | |
| 1198 | if (data[IFLA_BR_MCAST_HASH_MAX]) |
| 1199 | br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); |
| 1200 | |
| 1201 | if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { |
| 1202 | u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); |
| 1203 | |
| 1204 | br->multicast_last_member_count = val; |
| 1205 | } |
| 1206 | |
| 1207 | if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { |
| 1208 | u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); |
| 1209 | |
| 1210 | br->multicast_startup_query_count = val; |
| 1211 | } |
| 1212 | |
| 1213 | if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { |
| 1214 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); |
| 1215 | |
| 1216 | br->multicast_last_member_interval = clock_t_to_jiffies(val); |
| 1217 | } |
| 1218 | |
| 1219 | if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { |
| 1220 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); |
| 1221 | |
| 1222 | br->multicast_membership_interval = clock_t_to_jiffies(val); |
| 1223 | } |
| 1224 | |
| 1225 | if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { |
| 1226 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); |
| 1227 | |
| 1228 | br->multicast_querier_interval = clock_t_to_jiffies(val); |
| 1229 | } |
| 1230 | |
| 1231 | if (data[IFLA_BR_MCAST_QUERY_INTVL]) { |
| 1232 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); |
| 1233 | |
| 1234 | br->multicast_query_interval = clock_t_to_jiffies(val); |
| 1235 | } |
| 1236 | |
| 1237 | if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { |
| 1238 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); |
| 1239 | |
| 1240 | br->multicast_query_response_interval = clock_t_to_jiffies(val); |
| 1241 | } |
| 1242 | |
| 1243 | if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { |
| 1244 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); |
| 1245 | |
| 1246 | br->multicast_startup_query_interval = clock_t_to_jiffies(val); |
| 1247 | } |
| 1248 | |
| 1249 | if (data[IFLA_BR_MCAST_STATS_ENABLED]) { |
| 1250 | __u8 mcast_stats; |
| 1251 | |
| 1252 | mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]); |
| 1253 | br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats); |
| 1254 | } |
| 1255 | |
| 1256 | if (data[IFLA_BR_MCAST_IGMP_VERSION]) { |
| 1257 | __u8 igmp_version; |
| 1258 | |
| 1259 | igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]); |
| 1260 | err = br_multicast_set_igmp_version(br, igmp_version); |
| 1261 | if (err) |
| 1262 | return err; |
| 1263 | } |
| 1264 | |
| 1265 | #if IS_ENABLED(CONFIG_IPV6) |
| 1266 | if (data[IFLA_BR_MCAST_MLD_VERSION]) { |
| 1267 | __u8 mld_version; |
| 1268 | |
| 1269 | mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]); |
| 1270 | err = br_multicast_set_mld_version(br, mld_version); |
| 1271 | if (err) |
| 1272 | return err; |
| 1273 | } |
| 1274 | #endif |
| 1275 | #endif |
| 1276 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 1277 | if (data[IFLA_BR_NF_CALL_IPTABLES]) { |
| 1278 | u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); |
| 1279 | |
| 1280 | br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); |
| 1281 | } |
| 1282 | |
| 1283 | if (data[IFLA_BR_NF_CALL_IP6TABLES]) { |
| 1284 | u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); |
| 1285 | |
| 1286 | br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); |
| 1287 | } |
| 1288 | |
| 1289 | if (data[IFLA_BR_NF_CALL_ARPTABLES]) { |
| 1290 | u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); |
| 1291 | |
| 1292 | br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); |
| 1293 | } |
| 1294 | #endif |
| 1295 | |
| 1296 | if (data[IFLA_BR_MULTI_BOOLOPT]) { |
| 1297 | struct br_boolopt_multi *bm; |
| 1298 | |
| 1299 | bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]); |
| 1300 | err = br_boolopt_multi_toggle(br, bm, extack); |
| 1301 | if (err) |
| 1302 | return err; |
| 1303 | } |
| 1304 | |
| 1305 | return 0; |
| 1306 | } |
| 1307 | |
| 1308 | static int br_dev_newlink(struct net *src_net, struct net_device *dev, |
| 1309 | struct nlattr *tb[], struct nlattr *data[], |
| 1310 | struct netlink_ext_ack *extack) |
| 1311 | { |
| 1312 | struct net_bridge *br = netdev_priv(dev); |
| 1313 | int err; |
| 1314 | |
| 1315 | err = register_netdevice(dev); |
| 1316 | if (err) |
| 1317 | return err; |
| 1318 | |
| 1319 | if (tb[IFLA_ADDRESS]) { |
| 1320 | spin_lock_bh(&br->lock); |
| 1321 | br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); |
| 1322 | spin_unlock_bh(&br->lock); |
| 1323 | } |
| 1324 | |
| 1325 | err = br_changelink(dev, tb, data, extack); |
| 1326 | if (err) |
| 1327 | br_dev_delete(dev, NULL); |
| 1328 | |
| 1329 | return err; |
| 1330 | } |
| 1331 | |
| 1332 | static size_t br_get_size(const struct net_device *brdev) |
| 1333 | { |
| 1334 | return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ |
| 1335 | nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ |
| 1336 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ |
| 1337 | nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ |
| 1338 | nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ |
| 1339 | nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ |
| 1340 | nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ |
| 1341 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 1342 | nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ |
| 1343 | nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ |
| 1344 | nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ |
| 1345 | nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */ |
| 1346 | #endif |
| 1347 | nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ |
| 1348 | nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ |
| 1349 | nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ |
| 1350 | nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ |
| 1351 | nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ |
| 1352 | nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ |
| 1353 | nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ |
| 1354 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ |
| 1355 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ |
| 1356 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ |
| 1357 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ |
| 1358 | nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ |
| 1359 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1360 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ |
| 1361 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ |
| 1362 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ |
| 1363 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ |
| 1364 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */ |
| 1365 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ |
| 1366 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ |
| 1367 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ |
| 1368 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ |
| 1369 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ |
| 1370 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ |
| 1371 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ |
| 1372 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ |
| 1373 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ |
| 1374 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ |
| 1375 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */ |
| 1376 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */ |
| 1377 | #endif |
| 1378 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 1379 | nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ |
| 1380 | nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ |
| 1381 | nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ |
| 1382 | #endif |
| 1383 | nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */ |
| 1384 | 0; |
| 1385 | } |
| 1386 | |
| 1387 | static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) |
| 1388 | { |
| 1389 | struct net_bridge *br = netdev_priv(brdev); |
| 1390 | u32 forward_delay = jiffies_to_clock_t(br->forward_delay); |
| 1391 | u32 hello_time = jiffies_to_clock_t(br->hello_time); |
| 1392 | u32 age_time = jiffies_to_clock_t(br->max_age); |
| 1393 | u32 ageing_time = jiffies_to_clock_t(br->ageing_time); |
| 1394 | u32 stp_enabled = br->stp_enabled; |
| 1395 | u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; |
| 1396 | u8 vlan_enabled = br_vlan_enabled(br->dev); |
| 1397 | struct br_boolopt_multi bm; |
| 1398 | u64 clockval; |
| 1399 | |
| 1400 | clockval = br_timer_value(&br->hello_timer); |
| 1401 | if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) |
| 1402 | return -EMSGSIZE; |
| 1403 | clockval = br_timer_value(&br->tcn_timer); |
| 1404 | if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) |
| 1405 | return -EMSGSIZE; |
| 1406 | clockval = br_timer_value(&br->topology_change_timer); |
| 1407 | if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, |
| 1408 | IFLA_BR_PAD)) |
| 1409 | return -EMSGSIZE; |
| 1410 | clockval = br_timer_value(&br->gc_work.timer); |
| 1411 | if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) |
| 1412 | return -EMSGSIZE; |
| 1413 | |
| 1414 | br_boolopt_multi_get(br, &bm); |
| 1415 | if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || |
| 1416 | nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || |
| 1417 | nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || |
| 1418 | nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || |
| 1419 | nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || |
| 1420 | nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || |
| 1421 | nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || |
| 1422 | nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || |
| 1423 | nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), |
| 1424 | &br->bridge_id) || |
| 1425 | nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), |
| 1426 | &br->designated_root) || |
| 1427 | nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || |
| 1428 | nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || |
| 1429 | nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || |
| 1430 | nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, |
| 1431 | br->topology_change_detected) || |
| 1432 | nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) || |
| 1433 | nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm)) |
| 1434 | return -EMSGSIZE; |
| 1435 | |
| 1436 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 1437 | if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || |
| 1438 | nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || |
| 1439 | nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, |
| 1440 | br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) || |
| 1441 | nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT, |
| 1442 | br_opt_get(br, BROPT_VLAN_STATS_PER_PORT))) |
| 1443 | return -EMSGSIZE; |
| 1444 | #endif |
| 1445 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1446 | if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || |
| 1447 | nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, |
| 1448 | br_opt_get(br, BROPT_MULTICAST_ENABLED)) || |
| 1449 | nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, |
| 1450 | br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) || |
| 1451 | nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, |
| 1452 | br_opt_get(br, BROPT_MULTICAST_QUERIER)) || |
| 1453 | nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED, |
| 1454 | br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) || |
| 1455 | nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) || |
| 1456 | nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || |
| 1457 | nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, |
| 1458 | br->multicast_last_member_count) || |
| 1459 | nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, |
| 1460 | br->multicast_startup_query_count) || |
| 1461 | nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION, |
| 1462 | br->multicast_igmp_version)) |
| 1463 | return -EMSGSIZE; |
| 1464 | #if IS_ENABLED(CONFIG_IPV6) |
| 1465 | if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION, |
| 1466 | br->multicast_mld_version)) |
| 1467 | return -EMSGSIZE; |
| 1468 | #endif |
| 1469 | clockval = jiffies_to_clock_t(br->multicast_last_member_interval); |
| 1470 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, |
| 1471 | IFLA_BR_PAD)) |
| 1472 | return -EMSGSIZE; |
| 1473 | clockval = jiffies_to_clock_t(br->multicast_membership_interval); |
| 1474 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, |
| 1475 | IFLA_BR_PAD)) |
| 1476 | return -EMSGSIZE; |
| 1477 | clockval = jiffies_to_clock_t(br->multicast_querier_interval); |
| 1478 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, |
| 1479 | IFLA_BR_PAD)) |
| 1480 | return -EMSGSIZE; |
| 1481 | clockval = jiffies_to_clock_t(br->multicast_query_interval); |
| 1482 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, |
| 1483 | IFLA_BR_PAD)) |
| 1484 | return -EMSGSIZE; |
| 1485 | clockval = jiffies_to_clock_t(br->multicast_query_response_interval); |
| 1486 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, |
| 1487 | IFLA_BR_PAD)) |
| 1488 | return -EMSGSIZE; |
| 1489 | clockval = jiffies_to_clock_t(br->multicast_startup_query_interval); |
| 1490 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, |
| 1491 | IFLA_BR_PAD)) |
| 1492 | return -EMSGSIZE; |
| 1493 | #endif |
| 1494 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 1495 | if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, |
| 1496 | br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) || |
| 1497 | nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, |
| 1498 | br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) || |
| 1499 | nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, |
| 1500 | br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0)) |
| 1501 | return -EMSGSIZE; |
| 1502 | #endif |
| 1503 | |
| 1504 | return 0; |
| 1505 | } |
| 1506 | |
| 1507 | static size_t br_get_linkxstats_size(const struct net_device *dev, int attr) |
| 1508 | { |
| 1509 | struct net_bridge_port *p = NULL; |
| 1510 | struct net_bridge_vlan_group *vg; |
| 1511 | struct net_bridge_vlan *v; |
| 1512 | struct net_bridge *br; |
| 1513 | int numvls = 0; |
| 1514 | |
| 1515 | switch (attr) { |
| 1516 | case IFLA_STATS_LINK_XSTATS: |
| 1517 | br = netdev_priv(dev); |
| 1518 | vg = br_vlan_group(br); |
| 1519 | break; |
| 1520 | case IFLA_STATS_LINK_XSTATS_SLAVE: |
| 1521 | p = br_port_get_rtnl(dev); |
| 1522 | if (!p) |
| 1523 | return 0; |
| 1524 | br = p->br; |
| 1525 | vg = nbp_vlan_group(p); |
| 1526 | break; |
| 1527 | default: |
| 1528 | return 0; |
| 1529 | } |
| 1530 | |
| 1531 | if (vg) { |
| 1532 | /* we need to count all, even placeholder entries */ |
| 1533 | list_for_each_entry(v, &vg->vlan_list, vlist) |
| 1534 | numvls++; |
| 1535 | } |
| 1536 | |
| 1537 | return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + |
| 1538 | nla_total_size(sizeof(struct br_mcast_stats)) + |
| 1539 | nla_total_size(0); |
| 1540 | } |
| 1541 | |
| 1542 | static int br_fill_linkxstats(struct sk_buff *skb, |
| 1543 | const struct net_device *dev, |
| 1544 | int *prividx, int attr) |
| 1545 | { |
| 1546 | struct nlattr *nla __maybe_unused; |
| 1547 | struct net_bridge_port *p = NULL; |
| 1548 | struct net_bridge_vlan_group *vg; |
| 1549 | struct net_bridge_vlan *v; |
| 1550 | struct net_bridge *br; |
| 1551 | struct nlattr *nest; |
| 1552 | int vl_idx = 0; |
| 1553 | |
| 1554 | switch (attr) { |
| 1555 | case IFLA_STATS_LINK_XSTATS: |
| 1556 | br = netdev_priv(dev); |
| 1557 | vg = br_vlan_group(br); |
| 1558 | break; |
| 1559 | case IFLA_STATS_LINK_XSTATS_SLAVE: |
| 1560 | p = br_port_get_rtnl(dev); |
| 1561 | if (!p) |
| 1562 | return 0; |
| 1563 | br = p->br; |
| 1564 | vg = nbp_vlan_group(p); |
| 1565 | break; |
| 1566 | default: |
| 1567 | return -EINVAL; |
| 1568 | } |
| 1569 | |
| 1570 | nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE); |
| 1571 | if (!nest) |
| 1572 | return -EMSGSIZE; |
| 1573 | |
| 1574 | if (vg) { |
| 1575 | u16 pvid; |
| 1576 | |
| 1577 | pvid = br_get_pvid(vg); |
| 1578 | list_for_each_entry(v, &vg->vlan_list, vlist) { |
| 1579 | struct bridge_vlan_xstats vxi; |
| 1580 | struct br_vlan_stats stats; |
| 1581 | |
| 1582 | if (++vl_idx < *prividx) |
| 1583 | continue; |
| 1584 | memset(&vxi, 0, sizeof(vxi)); |
| 1585 | vxi.vid = v->vid; |
| 1586 | vxi.flags = v->flags; |
| 1587 | if (v->vid == pvid) |
| 1588 | vxi.flags |= BRIDGE_VLAN_INFO_PVID; |
| 1589 | br_vlan_get_stats(v, &stats); |
| 1590 | vxi.rx_bytes = stats.rx_bytes; |
| 1591 | vxi.rx_packets = stats.rx_packets; |
| 1592 | vxi.tx_bytes = stats.tx_bytes; |
| 1593 | vxi.tx_packets = stats.tx_packets; |
| 1594 | |
| 1595 | if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) |
| 1596 | goto nla_put_failure; |
| 1597 | } |
| 1598 | } |
| 1599 | |
| 1600 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1601 | if (++vl_idx >= *prividx) { |
| 1602 | nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST, |
| 1603 | sizeof(struct br_mcast_stats), |
| 1604 | BRIDGE_XSTATS_PAD); |
| 1605 | if (!nla) |
| 1606 | goto nla_put_failure; |
| 1607 | br_multicast_get_stats(br, p, nla_data(nla)); |
| 1608 | } |
| 1609 | #endif |
| 1610 | nla_nest_end(skb, nest); |
| 1611 | *prividx = 0; |
| 1612 | |
| 1613 | return 0; |
| 1614 | |
| 1615 | nla_put_failure: |
| 1616 | nla_nest_end(skb, nest); |
| 1617 | *prividx = vl_idx; |
| 1618 | |
| 1619 | return -EMSGSIZE; |
| 1620 | } |
| 1621 | |
| 1622 | static struct rtnl_af_ops br_af_ops __read_mostly = { |
| 1623 | .family = AF_BRIDGE, |
| 1624 | .get_link_af_size = br_get_link_af_size_filtered, |
| 1625 | }; |
| 1626 | |
| 1627 | struct rtnl_link_ops br_link_ops __read_mostly = { |
| 1628 | .kind = "bridge", |
| 1629 | .priv_size = sizeof(struct net_bridge), |
| 1630 | .setup = br_dev_setup, |
| 1631 | .maxtype = IFLA_BR_MAX, |
| 1632 | .policy = br_policy, |
| 1633 | .validate = br_validate, |
| 1634 | .newlink = br_dev_newlink, |
| 1635 | .changelink = br_changelink, |
| 1636 | .dellink = br_dev_delete, |
| 1637 | .get_size = br_get_size, |
| 1638 | .fill_info = br_fill_info, |
| 1639 | .fill_linkxstats = br_fill_linkxstats, |
| 1640 | .get_linkxstats_size = br_get_linkxstats_size, |
| 1641 | |
| 1642 | .slave_maxtype = IFLA_BRPORT_MAX, |
| 1643 | .slave_policy = br_port_policy, |
| 1644 | .slave_changelink = br_port_slave_changelink, |
| 1645 | .get_slave_size = br_port_get_slave_size, |
| 1646 | .fill_slave_info = br_port_fill_slave_info, |
| 1647 | }; |
| 1648 | |
| 1649 | int __init br_netlink_init(void) |
| 1650 | { |
| 1651 | int err; |
| 1652 | |
| 1653 | br_mdb_init(); |
| 1654 | rtnl_af_register(&br_af_ops); |
| 1655 | |
| 1656 | err = rtnl_link_register(&br_link_ops); |
| 1657 | if (err) |
| 1658 | goto out_af; |
| 1659 | |
| 1660 | return 0; |
| 1661 | |
| 1662 | out_af: |
| 1663 | rtnl_af_unregister(&br_af_ops); |
| 1664 | br_mdb_uninit(); |
| 1665 | return err; |
| 1666 | } |
| 1667 | |
| 1668 | void br_netlink_fini(void) |
| 1669 | { |
| 1670 | br_mdb_uninit(); |
| 1671 | rtnl_af_unregister(&br_af_ops); |
| 1672 | rtnl_link_unregister(&br_link_ops); |
| 1673 | } |