| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Bridge netlink control interface |
| 4 | * |
| 5 | * Authors: |
| 6 | * Stephen Hemminger <shemminger@osdl.org> |
| 7 | */ |
| 8 | |
| 9 | #include <linux/kernel.h> |
| 10 | #include <linux/slab.h> |
| 11 | #include <linux/etherdevice.h> |
| 12 | #include <net/rtnetlink.h> |
| 13 | #include <net/net_namespace.h> |
| 14 | #include <net/sock.h> |
| 15 | #include <uapi/linux/if_bridge.h> |
| 16 | |
| 17 | #include "br_private.h" |
| 18 | #include "br_private_stp.h" |
| 19 | #include "br_private_cfm.h" |
| 20 | #include "br_private_tunnel.h" |
| 21 | #include "br_private_mcast_eht.h" |
| 22 | |
| 23 | static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg, |
| 24 | u32 filter_mask) |
| 25 | { |
| 26 | struct net_bridge_vlan *v; |
| 27 | u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; |
| 28 | u16 flags, pvid; |
| 29 | int num_vlans = 0; |
| 30 | |
| 31 | if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) |
| 32 | return 0; |
| 33 | |
| 34 | pvid = br_get_pvid(vg); |
| 35 | /* Count number of vlan infos */ |
| 36 | list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| 37 | flags = 0; |
| 38 | /* only a context, bridge vlan not activated */ |
| 39 | if (!br_vlan_should_use(v)) |
| 40 | continue; |
| 41 | if (v->vid == pvid) |
| 42 | flags |= BRIDGE_VLAN_INFO_PVID; |
| 43 | |
| 44 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| 45 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| 46 | |
| 47 | if (vid_range_start == 0) { |
| 48 | goto initvars; |
| 49 | } else if ((v->vid - vid_range_end) == 1 && |
| 50 | flags == vid_range_flags) { |
| 51 | vid_range_end = v->vid; |
| 52 | continue; |
| 53 | } else { |
| 54 | if ((vid_range_end - vid_range_start) > 0) |
| 55 | num_vlans += 2; |
| 56 | else |
| 57 | num_vlans += 1; |
| 58 | } |
| 59 | initvars: |
| 60 | vid_range_start = v->vid; |
| 61 | vid_range_end = v->vid; |
| 62 | vid_range_flags = flags; |
| 63 | } |
| 64 | |
| 65 | if (vid_range_start != 0) { |
| 66 | if ((vid_range_end - vid_range_start) > 0) |
| 67 | num_vlans += 2; |
| 68 | else |
| 69 | num_vlans += 1; |
| 70 | } |
| 71 | |
| 72 | return num_vlans; |
| 73 | } |
| 74 | |
| 75 | static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg, |
| 76 | u32 filter_mask) |
| 77 | { |
| 78 | int num_vlans; |
| 79 | |
| 80 | if (!vg) |
| 81 | return 0; |
| 82 | |
| 83 | if (filter_mask & RTEXT_FILTER_BRVLAN) |
| 84 | return vg->num_vlans; |
| 85 | |
| 86 | rcu_read_lock(); |
| 87 | num_vlans = __get_num_vlan_infos(vg, filter_mask); |
| 88 | rcu_read_unlock(); |
| 89 | |
| 90 | return num_vlans; |
| 91 | } |
| 92 | |
| 93 | static size_t br_get_link_af_size_filtered(const struct net_device *dev, |
| 94 | u32 filter_mask) |
| 95 | { |
| 96 | struct net_bridge_vlan_group *vg = NULL; |
| 97 | struct net_bridge_port *p = NULL; |
| 98 | struct net_bridge *br = NULL; |
| 99 | u32 num_cfm_peer_mep_infos; |
| 100 | u32 num_cfm_mep_infos; |
| 101 | size_t vinfo_sz = 0; |
| 102 | int num_vlan_infos; |
| 103 | |
| 104 | rcu_read_lock(); |
| 105 | if (netif_is_bridge_port(dev)) { |
| 106 | p = br_port_get_check_rcu(dev); |
| 107 | if (p) |
| 108 | vg = nbp_vlan_group_rcu(p); |
| 109 | } else if (netif_is_bridge_master(dev)) { |
| 110 | br = netdev_priv(dev); |
| 111 | vg = br_vlan_group_rcu(br); |
| 112 | } |
| 113 | num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask); |
| 114 | rcu_read_unlock(); |
| 115 | |
| 116 | if (p && (p->flags & BR_VLAN_TUNNEL)) |
| 117 | vinfo_sz += br_get_vlan_tunnel_info_size(vg); |
| 118 | |
| 119 | /* Each VLAN is returned in bridge_vlan_info along with flags */ |
| 120 | vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); |
| 121 | |
| 122 | if (p && vg && (filter_mask & RTEXT_FILTER_MST)) |
| 123 | vinfo_sz += br_mst_info_size(vg); |
| 124 | |
| 125 | if (!(filter_mask & RTEXT_FILTER_CFM_STATUS)) |
| 126 | return vinfo_sz; |
| 127 | |
| 128 | if (!br) |
| 129 | return vinfo_sz; |
| 130 | |
| 131 | /* CFM status info must be added */ |
| 132 | br_cfm_mep_count(br, &num_cfm_mep_infos); |
| 133 | br_cfm_peer_mep_count(br, &num_cfm_peer_mep_infos); |
| 134 | |
| 135 | vinfo_sz += nla_total_size(0); /* IFLA_BRIDGE_CFM */ |
| 136 | /* For each status struct the MEP instance (u32) is added */ |
| 137 | /* MEP instance (u32) + br_cfm_mep_status */ |
| 138 | vinfo_sz += num_cfm_mep_infos * |
| 139 | /*IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE */ |
| 140 | (nla_total_size(sizeof(u32)) |
| 141 | /* IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN */ |
| 142 | + nla_total_size(sizeof(u32)) |
| 143 | /* IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN */ |
| 144 | + nla_total_size(sizeof(u32)) |
| 145 | /* IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN */ |
| 146 | + nla_total_size(sizeof(u32))); |
| 147 | /* MEP instance (u32) + br_cfm_cc_peer_status */ |
| 148 | vinfo_sz += num_cfm_peer_mep_infos * |
| 149 | /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE */ |
| 150 | (nla_total_size(sizeof(u32)) |
| 151 | /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID */ |
| 152 | + nla_total_size(sizeof(u32)) |
| 153 | /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT */ |
| 154 | + nla_total_size(sizeof(u32)) |
| 155 | /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI */ |
| 156 | + nla_total_size(sizeof(u32)) |
| 157 | /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE */ |
| 158 | + nla_total_size(sizeof(u8)) |
| 159 | /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE */ |
| 160 | + nla_total_size(sizeof(u8)) |
| 161 | /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN */ |
| 162 | + nla_total_size(sizeof(u32)) |
| 163 | /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN */ |
| 164 | + nla_total_size(sizeof(u32)) |
| 165 | /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN */ |
| 166 | + nla_total_size(sizeof(u32))); |
| 167 | |
| 168 | return vinfo_sz; |
| 169 | } |
| 170 | |
| 171 | static inline size_t br_port_info_size(void) |
| 172 | { |
| 173 | return nla_total_size(1) /* IFLA_BRPORT_STATE */ |
| 174 | + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ |
| 175 | + nla_total_size(4) /* IFLA_BRPORT_COST */ |
| 176 | + nla_total_size(1) /* IFLA_BRPORT_MODE */ |
| 177 | + nla_total_size(1) /* IFLA_BRPORT_GUARD */ |
| 178 | + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ |
| 179 | + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ |
| 180 | + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */ |
| 181 | + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ |
| 182 | + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ |
| 183 | + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */ |
| 184 | + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */ |
| 185 | + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */ |
| 186 | + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */ |
| 187 | + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */ |
| 188 | + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */ |
| 189 | + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */ |
| 190 | + nla_total_size(1) /* IFLA_BRPORT_LOCKED */ |
| 191 | + nla_total_size(1) /* IFLA_BRPORT_MAB */ |
| 192 | + nla_total_size(1) /* IFLA_BRPORT_NEIGH_VLAN_SUPPRESS */ |
| 193 | + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */ |
| 194 | + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */ |
| 195 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */ |
| 196 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */ |
| 197 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */ |
| 198 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */ |
| 199 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */ |
| 200 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */ |
| 201 | + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */ |
| 202 | + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */ |
| 203 | + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */ |
| 204 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 205 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */ |
| 206 | + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_N_GROUPS */ |
| 207 | + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_MAX_GROUPS */ |
| 208 | #endif |
| 209 | + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */ |
| 210 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_RING_OPEN */ |
| 211 | + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_IN_OPEN */ |
| 212 | + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT */ |
| 213 | + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_EHT_HOSTS_CNT */ |
| 214 | + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_BACKUP_NHID */ |
| 215 | + 0; |
| 216 | } |
| 217 | |
| 218 | static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) |
| 219 | { |
| 220 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) |
| 221 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
| 222 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
| 223 | + nla_total_size(4) /* IFLA_MASTER */ |
| 224 | + nla_total_size(4) /* IFLA_MTU */ |
| 225 | + nla_total_size(4) /* IFLA_LINK */ |
| 226 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
| 227 | + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ |
| 228 | + nla_total_size(br_get_link_af_size_filtered(dev, |
| 229 | filter_mask)) /* IFLA_AF_SPEC */ |
| 230 | + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */ |
| 231 | } |
| 232 | |
| 233 | static int br_port_fill_attrs(struct sk_buff *skb, |
| 234 | const struct net_bridge_port *p) |
| 235 | { |
| 236 | u8 mode = !!(p->flags & BR_HAIRPIN_MODE); |
| 237 | struct net_bridge_port *backup_p; |
| 238 | u64 timerval; |
| 239 | |
| 240 | if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || |
| 241 | nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || |
| 242 | nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || |
| 243 | nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || |
| 244 | nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || |
| 245 | nla_put_u8(skb, IFLA_BRPORT_PROTECT, |
| 246 | !!(p->flags & BR_ROOT_BLOCK)) || |
| 247 | nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, |
| 248 | !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || |
| 249 | nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST, |
| 250 | !!(p->flags & BR_MULTICAST_TO_UNICAST)) || |
| 251 | nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || |
| 252 | nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, |
| 253 | !!(p->flags & BR_FLOOD)) || |
| 254 | nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD, |
| 255 | !!(p->flags & BR_MCAST_FLOOD)) || |
| 256 | nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD, |
| 257 | !!(p->flags & BR_BCAST_FLOOD)) || |
| 258 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || |
| 259 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, |
| 260 | !!(p->flags & BR_PROXYARP_WIFI)) || |
| 261 | nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id), |
| 262 | &p->designated_root) || |
| 263 | nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id), |
| 264 | &p->designated_bridge) || |
| 265 | nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) || |
| 266 | nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) || |
| 267 | nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) || |
| 268 | nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) || |
| 269 | nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, |
| 270 | p->topology_change_ack) || |
| 271 | nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) || |
| 272 | nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags & |
| 273 | BR_VLAN_TUNNEL)) || |
| 274 | nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) || |
| 275 | nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS, |
| 276 | !!(p->flags & BR_NEIGH_SUPPRESS)) || |
| 277 | nla_put_u8(skb, IFLA_BRPORT_MRP_RING_OPEN, !!(p->flags & |
| 278 | BR_MRP_LOST_CONT)) || |
| 279 | nla_put_u8(skb, IFLA_BRPORT_MRP_IN_OPEN, |
| 280 | !!(p->flags & BR_MRP_LOST_IN_CONT)) || |
| 281 | nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)) || |
| 282 | nla_put_u8(skb, IFLA_BRPORT_LOCKED, !!(p->flags & BR_PORT_LOCKED)) || |
| 283 | nla_put_u8(skb, IFLA_BRPORT_MAB, !!(p->flags & BR_PORT_MAB)) || |
| 284 | nla_put_u8(skb, IFLA_BRPORT_NEIGH_VLAN_SUPPRESS, |
| 285 | !!(p->flags & BR_NEIGH_VLAN_SUPPRESS))) |
| 286 | return -EMSGSIZE; |
| 287 | |
| 288 | timerval = br_timer_value(&p->message_age_timer); |
| 289 | if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval, |
| 290 | IFLA_BRPORT_PAD)) |
| 291 | return -EMSGSIZE; |
| 292 | timerval = br_timer_value(&p->forward_delay_timer); |
| 293 | if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval, |
| 294 | IFLA_BRPORT_PAD)) |
| 295 | return -EMSGSIZE; |
| 296 | timerval = br_timer_value(&p->hold_timer); |
| 297 | if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval, |
| 298 | IFLA_BRPORT_PAD)) |
| 299 | return -EMSGSIZE; |
| 300 | |
| 301 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 302 | if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER, |
| 303 | p->multicast_ctx.multicast_router) || |
| 304 | nla_put_u32(skb, IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT, |
| 305 | p->multicast_eht_hosts_limit) || |
| 306 | nla_put_u32(skb, IFLA_BRPORT_MCAST_EHT_HOSTS_CNT, |
| 307 | p->multicast_eht_hosts_cnt) || |
| 308 | nla_put_u32(skb, IFLA_BRPORT_MCAST_N_GROUPS, |
| 309 | br_multicast_ngroups_get(&p->multicast_ctx)) || |
| 310 | nla_put_u32(skb, IFLA_BRPORT_MCAST_MAX_GROUPS, |
| 311 | br_multicast_ngroups_get_max(&p->multicast_ctx))) |
| 312 | return -EMSGSIZE; |
| 313 | #endif |
| 314 | |
| 315 | /* we might be called only with br->lock */ |
| 316 | rcu_read_lock(); |
| 317 | backup_p = rcu_dereference(p->backup_port); |
| 318 | if (backup_p) |
| 319 | nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT, |
| 320 | backup_p->dev->ifindex); |
| 321 | rcu_read_unlock(); |
| 322 | |
| 323 | if (p->backup_nhid && |
| 324 | nla_put_u32(skb, IFLA_BRPORT_BACKUP_NHID, p->backup_nhid)) |
| 325 | return -EMSGSIZE; |
| 326 | |
| 327 | return 0; |
| 328 | } |
| 329 | |
| 330 | static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, |
| 331 | u16 vid_end, u16 flags) |
| 332 | { |
| 333 | struct bridge_vlan_info vinfo; |
| 334 | |
| 335 | if ((vid_end - vid_start) > 0) { |
| 336 | /* add range to skb */ |
| 337 | vinfo.vid = vid_start; |
| 338 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; |
| 339 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 340 | sizeof(vinfo), &vinfo)) |
| 341 | goto nla_put_failure; |
| 342 | |
| 343 | vinfo.vid = vid_end; |
| 344 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; |
| 345 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 346 | sizeof(vinfo), &vinfo)) |
| 347 | goto nla_put_failure; |
| 348 | } else { |
| 349 | vinfo.vid = vid_start; |
| 350 | vinfo.flags = flags; |
| 351 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 352 | sizeof(vinfo), &vinfo)) |
| 353 | goto nla_put_failure; |
| 354 | } |
| 355 | |
| 356 | return 0; |
| 357 | |
| 358 | nla_put_failure: |
| 359 | return -EMSGSIZE; |
| 360 | } |
| 361 | |
| 362 | static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, |
| 363 | struct net_bridge_vlan_group *vg) |
| 364 | { |
| 365 | struct net_bridge_vlan *v; |
| 366 | u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; |
| 367 | u16 flags, pvid; |
| 368 | int err = 0; |
| 369 | |
| 370 | /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan |
| 371 | * and mark vlan info with begin and end flags |
| 372 | * if vlaninfo represents a range |
| 373 | */ |
| 374 | pvid = br_get_pvid(vg); |
| 375 | list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| 376 | flags = 0; |
| 377 | if (!br_vlan_should_use(v)) |
| 378 | continue; |
| 379 | if (v->vid == pvid) |
| 380 | flags |= BRIDGE_VLAN_INFO_PVID; |
| 381 | |
| 382 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| 383 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| 384 | |
| 385 | if (vid_range_start == 0) { |
| 386 | goto initvars; |
| 387 | } else if ((v->vid - vid_range_end) == 1 && |
| 388 | flags == vid_range_flags) { |
| 389 | vid_range_end = v->vid; |
| 390 | continue; |
| 391 | } else { |
| 392 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, |
| 393 | vid_range_end, |
| 394 | vid_range_flags); |
| 395 | if (err) |
| 396 | return err; |
| 397 | } |
| 398 | |
| 399 | initvars: |
| 400 | vid_range_start = v->vid; |
| 401 | vid_range_end = v->vid; |
| 402 | vid_range_flags = flags; |
| 403 | } |
| 404 | |
| 405 | if (vid_range_start != 0) { |
| 406 | /* Call it once more to send any left over vlans */ |
| 407 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, |
| 408 | vid_range_end, |
| 409 | vid_range_flags); |
| 410 | if (err) |
| 411 | return err; |
| 412 | } |
| 413 | |
| 414 | return 0; |
| 415 | } |
| 416 | |
| 417 | static int br_fill_ifvlaninfo(struct sk_buff *skb, |
| 418 | struct net_bridge_vlan_group *vg) |
| 419 | { |
| 420 | struct bridge_vlan_info vinfo; |
| 421 | struct net_bridge_vlan *v; |
| 422 | u16 pvid; |
| 423 | |
| 424 | pvid = br_get_pvid(vg); |
| 425 | list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| 426 | if (!br_vlan_should_use(v)) |
| 427 | continue; |
| 428 | |
| 429 | vinfo.vid = v->vid; |
| 430 | vinfo.flags = 0; |
| 431 | if (v->vid == pvid) |
| 432 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; |
| 433 | |
| 434 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| 435 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| 436 | |
| 437 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| 438 | sizeof(vinfo), &vinfo)) |
| 439 | goto nla_put_failure; |
| 440 | } |
| 441 | |
| 442 | return 0; |
| 443 | |
| 444 | nla_put_failure: |
| 445 | return -EMSGSIZE; |
| 446 | } |
| 447 | |
| 448 | /* |
| 449 | * Create one netlink message for one interface |
| 450 | * Contains port and master info as well as carrier and bridge state. |
| 451 | */ |
| 452 | static int br_fill_ifinfo(struct sk_buff *skb, |
| 453 | const struct net_bridge_port *port, |
| 454 | u32 pid, u32 seq, int event, unsigned int flags, |
| 455 | u32 filter_mask, const struct net_device *dev, |
| 456 | bool getlink) |
| 457 | { |
| 458 | u8 operstate = netif_running(dev) ? READ_ONCE(dev->operstate) : |
| 459 | IF_OPER_DOWN; |
| 460 | struct nlattr *af = NULL; |
| 461 | struct net_bridge *br; |
| 462 | struct ifinfomsg *hdr; |
| 463 | struct nlmsghdr *nlh; |
| 464 | |
| 465 | if (port) |
| 466 | br = port->br; |
| 467 | else |
| 468 | br = netdev_priv(dev); |
| 469 | |
| 470 | br_debug(br, "br_fill_info event %d port %s master %s\n", |
| 471 | event, dev->name, br->dev->name); |
| 472 | |
| 473 | nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); |
| 474 | if (nlh == NULL) |
| 475 | return -EMSGSIZE; |
| 476 | |
| 477 | hdr = nlmsg_data(nlh); |
| 478 | hdr->ifi_family = AF_BRIDGE; |
| 479 | hdr->__ifi_pad = 0; |
| 480 | hdr->ifi_type = dev->type; |
| 481 | hdr->ifi_index = dev->ifindex; |
| 482 | hdr->ifi_flags = dev_get_flags(dev); |
| 483 | hdr->ifi_change = 0; |
| 484 | |
| 485 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
| 486 | nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || |
| 487 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || |
| 488 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || |
| 489 | (dev->addr_len && |
| 490 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || |
| 491 | (dev->ifindex != dev_get_iflink(dev) && |
| 492 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) |
| 493 | goto nla_put_failure; |
| 494 | |
| 495 | if (event == RTM_NEWLINK && port) { |
| 496 | struct nlattr *nest; |
| 497 | |
| 498 | nest = nla_nest_start(skb, IFLA_PROTINFO); |
| 499 | if (nest == NULL || br_port_fill_attrs(skb, port) < 0) |
| 500 | goto nla_put_failure; |
| 501 | nla_nest_end(skb, nest); |
| 502 | } |
| 503 | |
| 504 | if (filter_mask & (RTEXT_FILTER_BRVLAN | |
| 505 | RTEXT_FILTER_BRVLAN_COMPRESSED | |
| 506 | RTEXT_FILTER_MRP | |
| 507 | RTEXT_FILTER_CFM_CONFIG | |
| 508 | RTEXT_FILTER_CFM_STATUS | |
| 509 | RTEXT_FILTER_MST)) { |
| 510 | af = nla_nest_start_noflag(skb, IFLA_AF_SPEC); |
| 511 | if (!af) |
| 512 | goto nla_put_failure; |
| 513 | } |
| 514 | |
| 515 | /* Check if the VID information is requested */ |
| 516 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || |
| 517 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { |
| 518 | struct net_bridge_vlan_group *vg; |
| 519 | int err; |
| 520 | |
| 521 | /* RCU needed because of the VLAN locking rules (rcu || rtnl) */ |
| 522 | rcu_read_lock(); |
| 523 | if (port) |
| 524 | vg = nbp_vlan_group_rcu(port); |
| 525 | else |
| 526 | vg = br_vlan_group_rcu(br); |
| 527 | |
| 528 | if (!vg || !vg->num_vlans) { |
| 529 | rcu_read_unlock(); |
| 530 | goto done; |
| 531 | } |
| 532 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) |
| 533 | err = br_fill_ifvlaninfo_compressed(skb, vg); |
| 534 | else |
| 535 | err = br_fill_ifvlaninfo(skb, vg); |
| 536 | |
| 537 | if (port && (port->flags & BR_VLAN_TUNNEL)) |
| 538 | err = br_fill_vlan_tunnel_info(skb, vg); |
| 539 | rcu_read_unlock(); |
| 540 | if (err) |
| 541 | goto nla_put_failure; |
| 542 | } |
| 543 | |
| 544 | if (filter_mask & RTEXT_FILTER_MRP) { |
| 545 | int err; |
| 546 | |
| 547 | if (!br_mrp_enabled(br) || port) |
| 548 | goto done; |
| 549 | |
| 550 | rcu_read_lock(); |
| 551 | err = br_mrp_fill_info(skb, br); |
| 552 | rcu_read_unlock(); |
| 553 | |
| 554 | if (err) |
| 555 | goto nla_put_failure; |
| 556 | } |
| 557 | |
| 558 | if (filter_mask & (RTEXT_FILTER_CFM_CONFIG | RTEXT_FILTER_CFM_STATUS)) { |
| 559 | struct nlattr *cfm_nest = NULL; |
| 560 | int err; |
| 561 | |
| 562 | if (!br_cfm_created(br) || port) |
| 563 | goto done; |
| 564 | |
| 565 | cfm_nest = nla_nest_start(skb, IFLA_BRIDGE_CFM); |
| 566 | if (!cfm_nest) |
| 567 | goto nla_put_failure; |
| 568 | |
| 569 | if (filter_mask & RTEXT_FILTER_CFM_CONFIG) { |
| 570 | rcu_read_lock(); |
| 571 | err = br_cfm_config_fill_info(skb, br); |
| 572 | rcu_read_unlock(); |
| 573 | if (err) |
| 574 | goto nla_put_failure; |
| 575 | } |
| 576 | |
| 577 | if (filter_mask & RTEXT_FILTER_CFM_STATUS) { |
| 578 | rcu_read_lock(); |
| 579 | err = br_cfm_status_fill_info(skb, br, getlink); |
| 580 | rcu_read_unlock(); |
| 581 | if (err) |
| 582 | goto nla_put_failure; |
| 583 | } |
| 584 | |
| 585 | nla_nest_end(skb, cfm_nest); |
| 586 | } |
| 587 | |
| 588 | if ((filter_mask & RTEXT_FILTER_MST) && |
| 589 | br_opt_get(br, BROPT_MST_ENABLED) && port) { |
| 590 | const struct net_bridge_vlan_group *vg = nbp_vlan_group(port); |
| 591 | struct nlattr *mst_nest; |
| 592 | int err; |
| 593 | |
| 594 | if (!vg || !vg->num_vlans) |
| 595 | goto done; |
| 596 | |
| 597 | mst_nest = nla_nest_start(skb, IFLA_BRIDGE_MST); |
| 598 | if (!mst_nest) |
| 599 | goto nla_put_failure; |
| 600 | |
| 601 | err = br_mst_fill_info(skb, vg); |
| 602 | if (err) |
| 603 | goto nla_put_failure; |
| 604 | |
| 605 | nla_nest_end(skb, mst_nest); |
| 606 | } |
| 607 | |
| 608 | done: |
| 609 | if (af) { |
| 610 | if (nlmsg_get_pos(skb) - (void *)af > nla_attr_size(0)) |
| 611 | nla_nest_end(skb, af); |
| 612 | else |
| 613 | nla_nest_cancel(skb, af); |
| 614 | } |
| 615 | |
| 616 | nlmsg_end(skb, nlh); |
| 617 | return 0; |
| 618 | |
| 619 | nla_put_failure: |
| 620 | nlmsg_cancel(skb, nlh); |
| 621 | return -EMSGSIZE; |
| 622 | } |
| 623 | |
| 624 | void br_info_notify(int event, const struct net_bridge *br, |
| 625 | const struct net_bridge_port *port, u32 filter) |
| 626 | { |
| 627 | struct net_device *dev; |
| 628 | struct sk_buff *skb; |
| 629 | int err = -ENOBUFS; |
| 630 | struct net *net; |
| 631 | u16 port_no = 0; |
| 632 | |
| 633 | if (WARN_ON(!port && !br)) |
| 634 | return; |
| 635 | |
| 636 | if (port) { |
| 637 | dev = port->dev; |
| 638 | br = port->br; |
| 639 | port_no = port->port_no; |
| 640 | } else { |
| 641 | dev = br->dev; |
| 642 | } |
| 643 | |
| 644 | net = dev_net(dev); |
| 645 | br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event); |
| 646 | |
| 647 | skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC); |
| 648 | if (skb == NULL) |
| 649 | goto errout; |
| 650 | |
| 651 | err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev, false); |
| 652 | if (err < 0) { |
| 653 | /* -EMSGSIZE implies BUG in br_nlmsg_size() */ |
| 654 | WARN_ON(err == -EMSGSIZE); |
| 655 | kfree_skb(skb); |
| 656 | goto errout; |
| 657 | } |
| 658 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
| 659 | return; |
| 660 | errout: |
| 661 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
| 662 | } |
| 663 | |
| 664 | /* Notify listeners of a change in bridge or port information */ |
| 665 | void br_ifinfo_notify(int event, const struct net_bridge *br, |
| 666 | const struct net_bridge_port *port) |
| 667 | { |
| 668 | u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; |
| 669 | |
| 670 | br_info_notify(event, br, port, filter); |
| 671 | } |
| 672 | |
| 673 | /* |
| 674 | * Dump information about all ports, in response to GETLINK |
| 675 | */ |
| 676 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
| 677 | struct net_device *dev, u32 filter_mask, int nlflags) |
| 678 | { |
| 679 | struct net_bridge_port *port = br_port_get_rtnl(dev); |
| 680 | |
| 681 | if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && |
| 682 | !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) && |
| 683 | !(filter_mask & RTEXT_FILTER_MRP) && |
| 684 | !(filter_mask & RTEXT_FILTER_CFM_CONFIG) && |
| 685 | !(filter_mask & RTEXT_FILTER_CFM_STATUS)) |
| 686 | return 0; |
| 687 | |
| 688 | return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, |
| 689 | filter_mask, dev, true); |
| 690 | } |
| 691 | |
| 692 | static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, |
| 693 | int cmd, struct bridge_vlan_info *vinfo, bool *changed, |
| 694 | struct netlink_ext_ack *extack) |
| 695 | { |
| 696 | bool curr_change; |
| 697 | int err = 0; |
| 698 | |
| 699 | switch (cmd) { |
| 700 | case RTM_SETLINK: |
| 701 | if (p) { |
| 702 | /* if the MASTER flag is set this will act on the global |
| 703 | * per-VLAN entry as well |
| 704 | */ |
| 705 | err = nbp_vlan_add(p, vinfo->vid, vinfo->flags, |
| 706 | &curr_change, extack); |
| 707 | } else { |
| 708 | vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; |
| 709 | err = br_vlan_add(br, vinfo->vid, vinfo->flags, |
| 710 | &curr_change, extack); |
| 711 | } |
| 712 | if (curr_change) |
| 713 | *changed = true; |
| 714 | break; |
| 715 | |
| 716 | case RTM_DELLINK: |
| 717 | if (p) { |
| 718 | if (!nbp_vlan_delete(p, vinfo->vid)) |
| 719 | *changed = true; |
| 720 | |
| 721 | if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) && |
| 722 | !br_vlan_delete(p->br, vinfo->vid)) |
| 723 | *changed = true; |
| 724 | } else if (!br_vlan_delete(br, vinfo->vid)) { |
| 725 | *changed = true; |
| 726 | } |
| 727 | break; |
| 728 | } |
| 729 | |
| 730 | return err; |
| 731 | } |
| 732 | |
| 733 | int br_process_vlan_info(struct net_bridge *br, |
| 734 | struct net_bridge_port *p, int cmd, |
| 735 | struct bridge_vlan_info *vinfo_curr, |
| 736 | struct bridge_vlan_info **vinfo_last, |
| 737 | bool *changed, |
| 738 | struct netlink_ext_ack *extack) |
| 739 | { |
| 740 | int err, rtm_cmd; |
| 741 | |
| 742 | if (!br_vlan_valid_id(vinfo_curr->vid, extack)) |
| 743 | return -EINVAL; |
| 744 | |
| 745 | /* needed for vlan-only NEWVLAN/DELVLAN notifications */ |
| 746 | rtm_cmd = br_afspec_cmd_to_rtm(cmd); |
| 747 | |
| 748 | if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
| 749 | if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) |
| 750 | return -EINVAL; |
| 751 | *vinfo_last = vinfo_curr; |
| 752 | return 0; |
| 753 | } |
| 754 | |
| 755 | if (*vinfo_last) { |
| 756 | struct bridge_vlan_info tmp_vinfo; |
| 757 | int v, v_change_start = 0; |
| 758 | |
| 759 | if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack)) |
| 760 | return -EINVAL; |
| 761 | |
| 762 | memcpy(&tmp_vinfo, *vinfo_last, |
| 763 | sizeof(struct bridge_vlan_info)); |
| 764 | for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) { |
| 765 | bool curr_change = false; |
| 766 | |
| 767 | tmp_vinfo.vid = v; |
| 768 | err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change, |
| 769 | extack); |
| 770 | if (err) |
| 771 | break; |
| 772 | if (curr_change) { |
| 773 | *changed = curr_change; |
| 774 | if (!v_change_start) |
| 775 | v_change_start = v; |
| 776 | } else { |
| 777 | /* nothing to notify yet */ |
| 778 | if (!v_change_start) |
| 779 | continue; |
| 780 | br_vlan_notify(br, p, v_change_start, |
| 781 | v - 1, rtm_cmd); |
| 782 | v_change_start = 0; |
| 783 | } |
| 784 | cond_resched(); |
| 785 | } |
| 786 | /* v_change_start is set only if the last/whole range changed */ |
| 787 | if (v_change_start) |
| 788 | br_vlan_notify(br, p, v_change_start, |
| 789 | v - 1, rtm_cmd); |
| 790 | |
| 791 | *vinfo_last = NULL; |
| 792 | |
| 793 | return err; |
| 794 | } |
| 795 | |
| 796 | err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack); |
| 797 | if (*changed) |
| 798 | br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd); |
| 799 | |
| 800 | return err; |
| 801 | } |
| 802 | |
| 803 | static int br_afspec(struct net_bridge *br, |
| 804 | struct net_bridge_port *p, |
| 805 | struct nlattr *af_spec, |
| 806 | int cmd, bool *changed, |
| 807 | struct netlink_ext_ack *extack) |
| 808 | { |
| 809 | struct bridge_vlan_info *vinfo_curr = NULL; |
| 810 | struct bridge_vlan_info *vinfo_last = NULL; |
| 811 | struct nlattr *attr; |
| 812 | struct vtunnel_info tinfo_last = {}; |
| 813 | struct vtunnel_info tinfo_curr = {}; |
| 814 | int err = 0, rem; |
| 815 | |
| 816 | nla_for_each_nested(attr, af_spec, rem) { |
| 817 | err = 0; |
| 818 | switch (nla_type(attr)) { |
| 819 | case IFLA_BRIDGE_VLAN_TUNNEL_INFO: |
| 820 | if (!p || !(p->flags & BR_VLAN_TUNNEL)) |
| 821 | return -EINVAL; |
| 822 | err = br_parse_vlan_tunnel_info(attr, &tinfo_curr); |
| 823 | if (err) |
| 824 | return err; |
| 825 | err = br_process_vlan_tunnel_info(br, p, cmd, |
| 826 | &tinfo_curr, |
| 827 | &tinfo_last, |
| 828 | changed); |
| 829 | if (err) |
| 830 | return err; |
| 831 | break; |
| 832 | case IFLA_BRIDGE_VLAN_INFO: |
| 833 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) |
| 834 | return -EINVAL; |
| 835 | vinfo_curr = nla_data(attr); |
| 836 | err = br_process_vlan_info(br, p, cmd, vinfo_curr, |
| 837 | &vinfo_last, changed, |
| 838 | extack); |
| 839 | if (err) |
| 840 | return err; |
| 841 | break; |
| 842 | case IFLA_BRIDGE_MRP: |
| 843 | err = br_mrp_parse(br, p, attr, cmd, extack); |
| 844 | if (err) |
| 845 | return err; |
| 846 | break; |
| 847 | case IFLA_BRIDGE_CFM: |
| 848 | err = br_cfm_parse(br, p, attr, cmd, extack); |
| 849 | if (err) |
| 850 | return err; |
| 851 | break; |
| 852 | case IFLA_BRIDGE_MST: |
| 853 | if (!p) { |
| 854 | NL_SET_ERR_MSG(extack, |
| 855 | "MST states can only be set on bridge ports"); |
| 856 | return -EINVAL; |
| 857 | } |
| 858 | |
| 859 | if (cmd != RTM_SETLINK) { |
| 860 | NL_SET_ERR_MSG(extack, |
| 861 | "MST states can only be set through RTM_SETLINK"); |
| 862 | return -EINVAL; |
| 863 | } |
| 864 | |
| 865 | err = br_mst_process(p, attr, extack); |
| 866 | if (err) |
| 867 | return err; |
| 868 | break; |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | return err; |
| 873 | } |
| 874 | |
| 875 | static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { |
| 876 | [IFLA_BRPORT_UNSPEC] = { .strict_start_type = |
| 877 | IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT + 1 }, |
| 878 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, |
| 879 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, |
| 880 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, |
| 881 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, |
| 882 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, |
| 883 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, |
| 884 | [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, |
| 885 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, |
| 886 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, |
| 887 | [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, |
| 888 | [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, |
| 889 | [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 }, |
| 890 | [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 }, |
| 891 | [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 }, |
| 892 | [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 }, |
| 893 | [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 }, |
| 894 | [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 }, |
| 895 | [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 }, |
| 896 | [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 }, |
| 897 | [IFLA_BRPORT_LOCKED] = { .type = NLA_U8 }, |
| 898 | [IFLA_BRPORT_MAB] = { .type = NLA_U8 }, |
| 899 | [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 }, |
| 900 | [IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT] = { .type = NLA_U32 }, |
| 901 | [IFLA_BRPORT_MCAST_N_GROUPS] = { .type = NLA_REJECT }, |
| 902 | [IFLA_BRPORT_MCAST_MAX_GROUPS] = { .type = NLA_U32 }, |
| 903 | [IFLA_BRPORT_NEIGH_VLAN_SUPPRESS] = NLA_POLICY_MAX(NLA_U8, 1), |
| 904 | [IFLA_BRPORT_BACKUP_NHID] = { .type = NLA_U32 }, |
| 905 | }; |
| 906 | |
| 907 | /* Change the state of the port and notify spanning tree */ |
| 908 | static int br_set_port_state(struct net_bridge_port *p, u8 state) |
| 909 | { |
| 910 | if (state > BR_STATE_BLOCKING) |
| 911 | return -EINVAL; |
| 912 | |
| 913 | /* if kernel STP is running, don't allow changes */ |
| 914 | if (p->br->stp_enabled == BR_KERNEL_STP) |
| 915 | return -EBUSY; |
| 916 | |
| 917 | /* if device is not up, change is not allowed |
| 918 | * if link is not present, only allowable state is disabled |
| 919 | */ |
| 920 | if (!netif_running(p->dev) || |
| 921 | (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) |
| 922 | return -ENETDOWN; |
| 923 | |
| 924 | br_set_state(p, state); |
| 925 | br_port_state_selection(p->br); |
| 926 | return 0; |
| 927 | } |
| 928 | |
| 929 | /* Set/clear or port flags based on attribute */ |
| 930 | static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], |
| 931 | int attrtype, unsigned long mask) |
| 932 | { |
| 933 | if (!tb[attrtype]) |
| 934 | return; |
| 935 | |
| 936 | if (nla_get_u8(tb[attrtype])) |
| 937 | p->flags |= mask; |
| 938 | else |
| 939 | p->flags &= ~mask; |
| 940 | } |
| 941 | |
| 942 | /* Process bridge protocol info on port */ |
| 943 | static int br_setport(struct net_bridge_port *p, struct nlattr *tb[], |
| 944 | struct netlink_ext_ack *extack) |
| 945 | { |
| 946 | unsigned long old_flags, changed_mask; |
| 947 | bool br_vlan_tunnel_old; |
| 948 | int err; |
| 949 | |
| 950 | old_flags = p->flags; |
| 951 | br_vlan_tunnel_old = (old_flags & BR_VLAN_TUNNEL) ? true : false; |
| 952 | |
| 953 | br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); |
| 954 | br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); |
| 955 | br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, |
| 956 | BR_MULTICAST_FAST_LEAVE); |
| 957 | br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); |
| 958 | br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); |
| 959 | br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); |
| 960 | br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); |
| 961 | br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, |
| 962 | BR_MULTICAST_TO_UNICAST); |
| 963 | br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); |
| 964 | br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); |
| 965 | br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); |
| 966 | br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); |
| 967 | br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, BR_NEIGH_SUPPRESS); |
| 968 | br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); |
| 969 | br_set_port_flag(p, tb, IFLA_BRPORT_LOCKED, BR_PORT_LOCKED); |
| 970 | br_set_port_flag(p, tb, IFLA_BRPORT_MAB, BR_PORT_MAB); |
| 971 | br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_VLAN_SUPPRESS, |
| 972 | BR_NEIGH_VLAN_SUPPRESS); |
| 973 | |
| 974 | if ((p->flags & BR_PORT_MAB) && |
| 975 | (!(p->flags & BR_PORT_LOCKED) || !(p->flags & BR_LEARNING))) { |
| 976 | NL_SET_ERR_MSG(extack, "Bridge port must be locked and have learning enabled when MAB is enabled"); |
| 977 | p->flags = old_flags; |
| 978 | return -EINVAL; |
| 979 | } else if (!(p->flags & BR_PORT_MAB) && (old_flags & BR_PORT_MAB)) { |
| 980 | struct net_bridge_fdb_flush_desc desc = { |
| 981 | .flags = BIT(BR_FDB_LOCKED), |
| 982 | .flags_mask = BIT(BR_FDB_LOCKED), |
| 983 | .port_ifindex = p->dev->ifindex, |
| 984 | }; |
| 985 | |
| 986 | br_fdb_flush(p->br, &desc); |
| 987 | } |
| 988 | |
| 989 | changed_mask = old_flags ^ p->flags; |
| 990 | |
| 991 | err = br_switchdev_set_port_flag(p, p->flags, changed_mask, extack); |
| 992 | if (err) { |
| 993 | p->flags = old_flags; |
| 994 | return err; |
| 995 | } |
| 996 | |
| 997 | if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) |
| 998 | nbp_vlan_tunnel_info_flush(p); |
| 999 | |
| 1000 | br_port_flags_change(p, changed_mask); |
| 1001 | |
| 1002 | if (tb[IFLA_BRPORT_COST]) { |
| 1003 | err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); |
| 1004 | if (err) |
| 1005 | return err; |
| 1006 | } |
| 1007 | |
| 1008 | if (tb[IFLA_BRPORT_PRIORITY]) { |
| 1009 | err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); |
| 1010 | if (err) |
| 1011 | return err; |
| 1012 | } |
| 1013 | |
| 1014 | if (tb[IFLA_BRPORT_STATE]) { |
| 1015 | err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); |
| 1016 | if (err) |
| 1017 | return err; |
| 1018 | } |
| 1019 | |
| 1020 | if (tb[IFLA_BRPORT_FLUSH]) |
| 1021 | br_fdb_delete_by_port(p->br, p, 0, 0); |
| 1022 | |
| 1023 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1024 | if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { |
| 1025 | u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]); |
| 1026 | |
| 1027 | err = br_multicast_set_port_router(&p->multicast_ctx, |
| 1028 | mcast_router); |
| 1029 | if (err) |
| 1030 | return err; |
| 1031 | } |
| 1032 | |
| 1033 | if (tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]) { |
| 1034 | u32 hlimit; |
| 1035 | |
| 1036 | hlimit = nla_get_u32(tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]); |
| 1037 | err = br_multicast_eht_set_hosts_limit(p, hlimit); |
| 1038 | if (err) |
| 1039 | return err; |
| 1040 | } |
| 1041 | |
| 1042 | if (tb[IFLA_BRPORT_MCAST_MAX_GROUPS]) { |
| 1043 | u32 max_groups; |
| 1044 | |
| 1045 | max_groups = nla_get_u32(tb[IFLA_BRPORT_MCAST_MAX_GROUPS]); |
| 1046 | br_multicast_ngroups_set_max(&p->multicast_ctx, max_groups); |
| 1047 | } |
| 1048 | #endif |
| 1049 | |
| 1050 | if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) { |
| 1051 | u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]); |
| 1052 | |
| 1053 | if (fwd_mask & BR_GROUPFWD_MACPAUSE) |
| 1054 | return -EINVAL; |
| 1055 | p->group_fwd_mask = fwd_mask; |
| 1056 | } |
| 1057 | |
| 1058 | if (tb[IFLA_BRPORT_BACKUP_PORT]) { |
| 1059 | struct net_device *backup_dev = NULL; |
| 1060 | u32 backup_ifindex; |
| 1061 | |
| 1062 | backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]); |
| 1063 | if (backup_ifindex) { |
| 1064 | backup_dev = __dev_get_by_index(dev_net(p->dev), |
| 1065 | backup_ifindex); |
| 1066 | if (!backup_dev) |
| 1067 | return -ENOENT; |
| 1068 | } |
| 1069 | |
| 1070 | err = nbp_backup_change(p, backup_dev); |
| 1071 | if (err) |
| 1072 | return err; |
| 1073 | } |
| 1074 | |
| 1075 | if (tb[IFLA_BRPORT_BACKUP_NHID]) { |
| 1076 | u32 backup_nhid = nla_get_u32(tb[IFLA_BRPORT_BACKUP_NHID]); |
| 1077 | |
| 1078 | WRITE_ONCE(p->backup_nhid, backup_nhid); |
| 1079 | } |
| 1080 | |
| 1081 | return 0; |
| 1082 | } |
| 1083 | |
| 1084 | /* Change state and parameters on port. */ |
| 1085 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, |
| 1086 | struct netlink_ext_ack *extack) |
| 1087 | { |
| 1088 | struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); |
| 1089 | struct nlattr *tb[IFLA_BRPORT_MAX + 1]; |
| 1090 | struct net_bridge_port *p; |
| 1091 | struct nlattr *protinfo; |
| 1092 | struct nlattr *afspec; |
| 1093 | bool changed = false; |
| 1094 | int err = 0; |
| 1095 | |
| 1096 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); |
| 1097 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
| 1098 | if (!protinfo && !afspec) |
| 1099 | return 0; |
| 1100 | |
| 1101 | p = br_port_get_rtnl(dev); |
| 1102 | /* We want to accept dev as bridge itself if the AF_SPEC |
| 1103 | * is set to see if someone is setting vlan info on the bridge |
| 1104 | */ |
| 1105 | if (!p && !afspec) |
| 1106 | return -EINVAL; |
| 1107 | |
| 1108 | if (p && protinfo) { |
| 1109 | if (protinfo->nla_type & NLA_F_NESTED) { |
| 1110 | err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX, |
| 1111 | protinfo, |
| 1112 | br_port_policy, |
| 1113 | NULL); |
| 1114 | if (err) |
| 1115 | return err; |
| 1116 | |
| 1117 | spin_lock_bh(&p->br->lock); |
| 1118 | err = br_setport(p, tb, extack); |
| 1119 | spin_unlock_bh(&p->br->lock); |
| 1120 | } else { |
| 1121 | /* Binary compatibility with old RSTP */ |
| 1122 | if (nla_len(protinfo) < sizeof(u8)) |
| 1123 | return -EINVAL; |
| 1124 | |
| 1125 | spin_lock_bh(&p->br->lock); |
| 1126 | err = br_set_port_state(p, nla_get_u8(protinfo)); |
| 1127 | spin_unlock_bh(&p->br->lock); |
| 1128 | } |
| 1129 | if (err) |
| 1130 | goto out; |
| 1131 | changed = true; |
| 1132 | } |
| 1133 | |
| 1134 | if (afspec) |
| 1135 | err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack); |
| 1136 | |
| 1137 | if (changed) |
| 1138 | br_ifinfo_notify(RTM_NEWLINK, br, p); |
| 1139 | out: |
| 1140 | return err; |
| 1141 | } |
| 1142 | |
| 1143 | /* Delete port information */ |
| 1144 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) |
| 1145 | { |
| 1146 | struct net_bridge *br = (struct net_bridge *)netdev_priv(dev); |
| 1147 | struct net_bridge_port *p; |
| 1148 | struct nlattr *afspec; |
| 1149 | bool changed = false; |
| 1150 | int err = 0; |
| 1151 | |
| 1152 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
| 1153 | if (!afspec) |
| 1154 | return 0; |
| 1155 | |
| 1156 | p = br_port_get_rtnl(dev); |
| 1157 | /* We want to accept dev as bridge itself as well */ |
| 1158 | if (!p && !netif_is_bridge_master(dev)) |
| 1159 | return -EINVAL; |
| 1160 | |
| 1161 | err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL); |
| 1162 | if (changed) |
| 1163 | /* Send RTM_NEWLINK because userspace |
| 1164 | * expects RTM_NEWLINK for vlan dels |
| 1165 | */ |
| 1166 | br_ifinfo_notify(RTM_NEWLINK, br, p); |
| 1167 | |
| 1168 | return err; |
| 1169 | } |
| 1170 | |
| 1171 | static int br_validate(struct nlattr *tb[], struct nlattr *data[], |
| 1172 | struct netlink_ext_ack *extack) |
| 1173 | { |
| 1174 | if (tb[IFLA_ADDRESS]) { |
| 1175 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) |
| 1176 | return -EINVAL; |
| 1177 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) |
| 1178 | return -EADDRNOTAVAIL; |
| 1179 | } |
| 1180 | |
| 1181 | if (!data) |
| 1182 | return 0; |
| 1183 | |
| 1184 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 1185 | if (data[IFLA_BR_VLAN_PROTOCOL] && |
| 1186 | !eth_type_vlan(nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]))) |
| 1187 | return -EPROTONOSUPPORT; |
| 1188 | |
| 1189 | if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { |
| 1190 | __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); |
| 1191 | |
| 1192 | if (defpvid >= VLAN_VID_MASK) |
| 1193 | return -EINVAL; |
| 1194 | } |
| 1195 | #endif |
| 1196 | |
| 1197 | return 0; |
| 1198 | } |
| 1199 | |
| 1200 | static int br_port_slave_changelink(struct net_device *brdev, |
| 1201 | struct net_device *dev, |
| 1202 | struct nlattr *tb[], |
| 1203 | struct nlattr *data[], |
| 1204 | struct netlink_ext_ack *extack) |
| 1205 | { |
| 1206 | struct net_bridge *br = netdev_priv(brdev); |
| 1207 | int ret; |
| 1208 | |
| 1209 | if (!data) |
| 1210 | return 0; |
| 1211 | |
| 1212 | spin_lock_bh(&br->lock); |
| 1213 | ret = br_setport(br_port_get_rtnl(dev), data, extack); |
| 1214 | spin_unlock_bh(&br->lock); |
| 1215 | |
| 1216 | return ret; |
| 1217 | } |
| 1218 | |
| 1219 | static int br_port_fill_slave_info(struct sk_buff *skb, |
| 1220 | const struct net_device *brdev, |
| 1221 | const struct net_device *dev) |
| 1222 | { |
| 1223 | return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); |
| 1224 | } |
| 1225 | |
| 1226 | static size_t br_port_get_slave_size(const struct net_device *brdev, |
| 1227 | const struct net_device *dev) |
| 1228 | { |
| 1229 | return br_port_info_size(); |
| 1230 | } |
| 1231 | |
| 1232 | static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { |
| 1233 | [IFLA_BR_UNSPEC] = { .strict_start_type = |
| 1234 | IFLA_BR_FDB_N_LEARNED }, |
| 1235 | [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, |
| 1236 | [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, |
| 1237 | [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, |
| 1238 | [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, |
| 1239 | [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, |
| 1240 | [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, |
| 1241 | [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, |
| 1242 | [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, |
| 1243 | [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, |
| 1244 | [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, |
| 1245 | .len = ETH_ALEN }, |
| 1246 | [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 }, |
| 1247 | [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 }, |
| 1248 | [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 }, |
| 1249 | [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 }, |
| 1250 | [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 }, |
| 1251 | [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 }, |
| 1252 | [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, |
| 1253 | [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, |
| 1254 | [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, |
| 1255 | [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, |
| 1256 | [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, |
| 1257 | [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, |
| 1258 | [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, |
| 1259 | [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, |
| 1260 | [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, |
| 1261 | [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, |
| 1262 | [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, |
| 1263 | [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 }, |
| 1264 | [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 }, |
| 1265 | [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 }, |
| 1266 | [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, |
| 1267 | [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 }, |
| 1268 | [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 }, |
| 1269 | [IFLA_BR_MULTI_BOOLOPT] = |
| 1270 | NLA_POLICY_EXACT_LEN(sizeof(struct br_boolopt_multi)), |
| 1271 | [IFLA_BR_FDB_N_LEARNED] = { .type = NLA_REJECT }, |
| 1272 | [IFLA_BR_FDB_MAX_LEARNED] = { .type = NLA_U32 }, |
| 1273 | }; |
| 1274 | |
| 1275 | static int br_changelink(struct net_device *brdev, struct nlattr *tb[], |
| 1276 | struct nlattr *data[], |
| 1277 | struct netlink_ext_ack *extack) |
| 1278 | { |
| 1279 | struct net_bridge *br = netdev_priv(brdev); |
| 1280 | int err; |
| 1281 | |
| 1282 | if (!data) |
| 1283 | return 0; |
| 1284 | |
| 1285 | if (data[IFLA_BR_FORWARD_DELAY]) { |
| 1286 | err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); |
| 1287 | if (err) |
| 1288 | return err; |
| 1289 | } |
| 1290 | |
| 1291 | if (data[IFLA_BR_HELLO_TIME]) { |
| 1292 | err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); |
| 1293 | if (err) |
| 1294 | return err; |
| 1295 | } |
| 1296 | |
| 1297 | if (data[IFLA_BR_MAX_AGE]) { |
| 1298 | err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); |
| 1299 | if (err) |
| 1300 | return err; |
| 1301 | } |
| 1302 | |
| 1303 | if (data[IFLA_BR_AGEING_TIME]) { |
| 1304 | err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME])); |
| 1305 | if (err) |
| 1306 | return err; |
| 1307 | } |
| 1308 | |
| 1309 | if (data[IFLA_BR_STP_STATE]) { |
| 1310 | u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); |
| 1311 | |
| 1312 | err = br_stp_set_enabled(br, stp_enabled, extack); |
| 1313 | if (err) |
| 1314 | return err; |
| 1315 | } |
| 1316 | |
| 1317 | if (data[IFLA_BR_PRIORITY]) { |
| 1318 | u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); |
| 1319 | |
| 1320 | br_stp_set_bridge_priority(br, priority); |
| 1321 | } |
| 1322 | |
| 1323 | if (data[IFLA_BR_VLAN_FILTERING]) { |
| 1324 | u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); |
| 1325 | |
| 1326 | err = br_vlan_filter_toggle(br, vlan_filter, extack); |
| 1327 | if (err) |
| 1328 | return err; |
| 1329 | } |
| 1330 | |
| 1331 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 1332 | if (data[IFLA_BR_VLAN_PROTOCOL]) { |
| 1333 | __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); |
| 1334 | |
| 1335 | err = __br_vlan_set_proto(br, vlan_proto, extack); |
| 1336 | if (err) |
| 1337 | return err; |
| 1338 | } |
| 1339 | |
| 1340 | if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { |
| 1341 | __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); |
| 1342 | |
| 1343 | err = __br_vlan_set_default_pvid(br, defpvid, extack); |
| 1344 | if (err) |
| 1345 | return err; |
| 1346 | } |
| 1347 | |
| 1348 | if (data[IFLA_BR_VLAN_STATS_ENABLED]) { |
| 1349 | __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]); |
| 1350 | |
| 1351 | err = br_vlan_set_stats(br, vlan_stats); |
| 1352 | if (err) |
| 1353 | return err; |
| 1354 | } |
| 1355 | |
| 1356 | if (data[IFLA_BR_VLAN_STATS_PER_PORT]) { |
| 1357 | __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]); |
| 1358 | |
| 1359 | err = br_vlan_set_stats_per_port(br, per_port); |
| 1360 | if (err) |
| 1361 | return err; |
| 1362 | } |
| 1363 | #endif |
| 1364 | |
| 1365 | if (data[IFLA_BR_GROUP_FWD_MASK]) { |
| 1366 | u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]); |
| 1367 | |
| 1368 | if (fwd_mask & BR_GROUPFWD_RESTRICTED) |
| 1369 | return -EINVAL; |
| 1370 | br->group_fwd_mask = fwd_mask; |
| 1371 | } |
| 1372 | |
| 1373 | if (data[IFLA_BR_GROUP_ADDR]) { |
| 1374 | u8 new_addr[ETH_ALEN]; |
| 1375 | |
| 1376 | if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) |
| 1377 | return -EINVAL; |
| 1378 | memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); |
| 1379 | if (!is_link_local_ether_addr(new_addr)) |
| 1380 | return -EINVAL; |
| 1381 | if (new_addr[5] == 1 || /* 802.3x Pause address */ |
| 1382 | new_addr[5] == 2 || /* 802.3ad Slow protocols */ |
| 1383 | new_addr[5] == 3) /* 802.1X PAE address */ |
| 1384 | return -EINVAL; |
| 1385 | spin_lock_bh(&br->lock); |
| 1386 | memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); |
| 1387 | spin_unlock_bh(&br->lock); |
| 1388 | br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); |
| 1389 | br_recalculate_fwd_mask(br); |
| 1390 | } |
| 1391 | |
| 1392 | if (data[IFLA_BR_FDB_FLUSH]) { |
| 1393 | struct net_bridge_fdb_flush_desc desc = { |
| 1394 | .flags_mask = BIT(BR_FDB_STATIC) |
| 1395 | }; |
| 1396 | |
| 1397 | br_fdb_flush(br, &desc); |
| 1398 | } |
| 1399 | |
| 1400 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1401 | if (data[IFLA_BR_MCAST_ROUTER]) { |
| 1402 | u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]); |
| 1403 | |
| 1404 | err = br_multicast_set_router(&br->multicast_ctx, |
| 1405 | multicast_router); |
| 1406 | if (err) |
| 1407 | return err; |
| 1408 | } |
| 1409 | |
| 1410 | if (data[IFLA_BR_MCAST_SNOOPING]) { |
| 1411 | u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]); |
| 1412 | |
| 1413 | err = br_multicast_toggle(br, mcast_snooping, extack); |
| 1414 | if (err) |
| 1415 | return err; |
| 1416 | } |
| 1417 | |
| 1418 | if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) { |
| 1419 | u8 val; |
| 1420 | |
| 1421 | val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]); |
| 1422 | br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); |
| 1423 | } |
| 1424 | |
| 1425 | if (data[IFLA_BR_MCAST_QUERIER]) { |
| 1426 | u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]); |
| 1427 | |
| 1428 | err = br_multicast_set_querier(&br->multicast_ctx, |
| 1429 | mcast_querier); |
| 1430 | if (err) |
| 1431 | return err; |
| 1432 | } |
| 1433 | |
| 1434 | if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) |
| 1435 | br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n", |
| 1436 | RHT_ELASTICITY); |
| 1437 | |
| 1438 | if (data[IFLA_BR_MCAST_HASH_MAX]) |
| 1439 | br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]); |
| 1440 | |
| 1441 | if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) { |
| 1442 | u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]); |
| 1443 | |
| 1444 | br->multicast_ctx.multicast_last_member_count = val; |
| 1445 | } |
| 1446 | |
| 1447 | if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) { |
| 1448 | u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); |
| 1449 | |
| 1450 | br->multicast_ctx.multicast_startup_query_count = val; |
| 1451 | } |
| 1452 | |
| 1453 | if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) { |
| 1454 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); |
| 1455 | |
| 1456 | br->multicast_ctx.multicast_last_member_interval = clock_t_to_jiffies(val); |
| 1457 | } |
| 1458 | |
| 1459 | if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) { |
| 1460 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); |
| 1461 | |
| 1462 | br->multicast_ctx.multicast_membership_interval = clock_t_to_jiffies(val); |
| 1463 | } |
| 1464 | |
| 1465 | if (data[IFLA_BR_MCAST_QUERIER_INTVL]) { |
| 1466 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]); |
| 1467 | |
| 1468 | br->multicast_ctx.multicast_querier_interval = clock_t_to_jiffies(val); |
| 1469 | } |
| 1470 | |
| 1471 | if (data[IFLA_BR_MCAST_QUERY_INTVL]) { |
| 1472 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); |
| 1473 | |
| 1474 | br_multicast_set_query_intvl(&br->multicast_ctx, val); |
| 1475 | } |
| 1476 | |
| 1477 | if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { |
| 1478 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); |
| 1479 | |
| 1480 | br->multicast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val); |
| 1481 | } |
| 1482 | |
| 1483 | if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { |
| 1484 | u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); |
| 1485 | |
| 1486 | br_multicast_set_startup_query_intvl(&br->multicast_ctx, val); |
| 1487 | } |
| 1488 | |
| 1489 | if (data[IFLA_BR_MCAST_STATS_ENABLED]) { |
| 1490 | __u8 mcast_stats; |
| 1491 | |
| 1492 | mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]); |
| 1493 | br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats); |
| 1494 | } |
| 1495 | |
| 1496 | if (data[IFLA_BR_MCAST_IGMP_VERSION]) { |
| 1497 | __u8 igmp_version; |
| 1498 | |
| 1499 | igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]); |
| 1500 | err = br_multicast_set_igmp_version(&br->multicast_ctx, |
| 1501 | igmp_version); |
| 1502 | if (err) |
| 1503 | return err; |
| 1504 | } |
| 1505 | |
| 1506 | #if IS_ENABLED(CONFIG_IPV6) |
| 1507 | if (data[IFLA_BR_MCAST_MLD_VERSION]) { |
| 1508 | __u8 mld_version; |
| 1509 | |
| 1510 | mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]); |
| 1511 | err = br_multicast_set_mld_version(&br->multicast_ctx, |
| 1512 | mld_version); |
| 1513 | if (err) |
| 1514 | return err; |
| 1515 | } |
| 1516 | #endif |
| 1517 | #endif |
| 1518 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 1519 | if (data[IFLA_BR_NF_CALL_IPTABLES]) { |
| 1520 | u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); |
| 1521 | |
| 1522 | br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); |
| 1523 | } |
| 1524 | |
| 1525 | if (data[IFLA_BR_NF_CALL_IP6TABLES]) { |
| 1526 | u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); |
| 1527 | |
| 1528 | br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); |
| 1529 | } |
| 1530 | |
| 1531 | if (data[IFLA_BR_NF_CALL_ARPTABLES]) { |
| 1532 | u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); |
| 1533 | |
| 1534 | br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); |
| 1535 | } |
| 1536 | #endif |
| 1537 | |
| 1538 | if (data[IFLA_BR_MULTI_BOOLOPT]) { |
| 1539 | struct br_boolopt_multi *bm; |
| 1540 | |
| 1541 | bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]); |
| 1542 | err = br_boolopt_multi_toggle(br, bm, extack); |
| 1543 | if (err) |
| 1544 | return err; |
| 1545 | } |
| 1546 | |
| 1547 | if (data[IFLA_BR_FDB_MAX_LEARNED]) { |
| 1548 | u32 val = nla_get_u32(data[IFLA_BR_FDB_MAX_LEARNED]); |
| 1549 | |
| 1550 | WRITE_ONCE(br->fdb_max_learned, val); |
| 1551 | } |
| 1552 | |
| 1553 | return 0; |
| 1554 | } |
| 1555 | |
| 1556 | static int br_dev_newlink(struct net *src_net, struct net_device *dev, |
| 1557 | struct nlattr *tb[], struct nlattr *data[], |
| 1558 | struct netlink_ext_ack *extack) |
| 1559 | { |
| 1560 | struct net_bridge *br = netdev_priv(dev); |
| 1561 | int err; |
| 1562 | |
| 1563 | err = register_netdevice(dev); |
| 1564 | if (err) |
| 1565 | return err; |
| 1566 | |
| 1567 | if (tb[IFLA_ADDRESS]) { |
| 1568 | spin_lock_bh(&br->lock); |
| 1569 | br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); |
| 1570 | spin_unlock_bh(&br->lock); |
| 1571 | } |
| 1572 | |
| 1573 | err = br_changelink(dev, tb, data, extack); |
| 1574 | if (err) |
| 1575 | br_dev_delete(dev, NULL); |
| 1576 | |
| 1577 | return err; |
| 1578 | } |
| 1579 | |
| 1580 | static size_t br_get_size(const struct net_device *brdev) |
| 1581 | { |
| 1582 | return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ |
| 1583 | nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ |
| 1584 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ |
| 1585 | nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ |
| 1586 | nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ |
| 1587 | nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ |
| 1588 | nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ |
| 1589 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 1590 | nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ |
| 1591 | nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */ |
| 1592 | nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */ |
| 1593 | nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */ |
| 1594 | #endif |
| 1595 | nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */ |
| 1596 | nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */ |
| 1597 | nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */ |
| 1598 | nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */ |
| 1599 | nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */ |
| 1600 | nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */ |
| 1601 | nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */ |
| 1602 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */ |
| 1603 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ |
| 1604 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ |
| 1605 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ |
| 1606 | nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ |
| 1607 | nla_total_size(sizeof(u32)) + /* IFLA_BR_FDB_N_LEARNED */ |
| 1608 | nla_total_size(sizeof(u32)) + /* IFLA_BR_FDB_MAX_LEARNED */ |
| 1609 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1610 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */ |
| 1611 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */ |
| 1612 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */ |
| 1613 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */ |
| 1614 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */ |
| 1615 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */ |
| 1616 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */ |
| 1617 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */ |
| 1618 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */ |
| 1619 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */ |
| 1620 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */ |
| 1621 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */ |
| 1622 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ |
| 1623 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ |
| 1624 | nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ |
| 1625 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */ |
| 1626 | nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */ |
| 1627 | br_multicast_querier_state_size() + /* IFLA_BR_MCAST_QUERIER_STATE */ |
| 1628 | #endif |
| 1629 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 1630 | nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ |
| 1631 | nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ |
| 1632 | nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ |
| 1633 | #endif |
| 1634 | nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */ |
| 1635 | 0; |
| 1636 | } |
| 1637 | |
| 1638 | static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) |
| 1639 | { |
| 1640 | struct net_bridge *br = netdev_priv(brdev); |
| 1641 | u32 forward_delay = jiffies_to_clock_t(br->forward_delay); |
| 1642 | u32 hello_time = jiffies_to_clock_t(br->hello_time); |
| 1643 | u32 age_time = jiffies_to_clock_t(br->max_age); |
| 1644 | u32 ageing_time = jiffies_to_clock_t(br->ageing_time); |
| 1645 | u32 stp_enabled = br->stp_enabled; |
| 1646 | u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; |
| 1647 | u8 vlan_enabled = br_vlan_enabled(br->dev); |
| 1648 | struct br_boolopt_multi bm; |
| 1649 | u64 clockval; |
| 1650 | |
| 1651 | clockval = br_timer_value(&br->hello_timer); |
| 1652 | if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD)) |
| 1653 | return -EMSGSIZE; |
| 1654 | clockval = br_timer_value(&br->tcn_timer); |
| 1655 | if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD)) |
| 1656 | return -EMSGSIZE; |
| 1657 | clockval = br_timer_value(&br->topology_change_timer); |
| 1658 | if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval, |
| 1659 | IFLA_BR_PAD)) |
| 1660 | return -EMSGSIZE; |
| 1661 | clockval = br_timer_value(&br->gc_work.timer); |
| 1662 | if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD)) |
| 1663 | return -EMSGSIZE; |
| 1664 | |
| 1665 | br_boolopt_multi_get(br, &bm); |
| 1666 | if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || |
| 1667 | nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || |
| 1668 | nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || |
| 1669 | nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || |
| 1670 | nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || |
| 1671 | nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || |
| 1672 | nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) || |
| 1673 | nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) || |
| 1674 | nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id), |
| 1675 | &br->bridge_id) || |
| 1676 | nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id), |
| 1677 | &br->designated_root) || |
| 1678 | nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) || |
| 1679 | nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) || |
| 1680 | nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) || |
| 1681 | nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED, |
| 1682 | br->topology_change_detected) || |
| 1683 | nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) || |
| 1684 | nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm) || |
| 1685 | nla_put_u32(skb, IFLA_BR_FDB_N_LEARNED, |
| 1686 | atomic_read(&br->fdb_n_learned)) || |
| 1687 | nla_put_u32(skb, IFLA_BR_FDB_MAX_LEARNED, br->fdb_max_learned)) |
| 1688 | return -EMSGSIZE; |
| 1689 | |
| 1690 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 1691 | if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) || |
| 1692 | nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) || |
| 1693 | nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, |
| 1694 | br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) || |
| 1695 | nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT, |
| 1696 | br_opt_get(br, BROPT_VLAN_STATS_PER_PORT))) |
| 1697 | return -EMSGSIZE; |
| 1698 | #endif |
| 1699 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1700 | if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, |
| 1701 | br->multicast_ctx.multicast_router) || |
| 1702 | nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, |
| 1703 | br_opt_get(br, BROPT_MULTICAST_ENABLED)) || |
| 1704 | nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR, |
| 1705 | br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) || |
| 1706 | nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, |
| 1707 | br->multicast_ctx.multicast_querier) || |
| 1708 | nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED, |
| 1709 | br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) || |
| 1710 | nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) || |
| 1711 | nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) || |
| 1712 | nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT, |
| 1713 | br->multicast_ctx.multicast_last_member_count) || |
| 1714 | nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT, |
| 1715 | br->multicast_ctx.multicast_startup_query_count) || |
| 1716 | nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION, |
| 1717 | br->multicast_ctx.multicast_igmp_version) || |
| 1718 | br_multicast_dump_querier_state(skb, &br->multicast_ctx, |
| 1719 | IFLA_BR_MCAST_QUERIER_STATE)) |
| 1720 | return -EMSGSIZE; |
| 1721 | #if IS_ENABLED(CONFIG_IPV6) |
| 1722 | if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION, |
| 1723 | br->multicast_ctx.multicast_mld_version)) |
| 1724 | return -EMSGSIZE; |
| 1725 | #endif |
| 1726 | clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_last_member_interval); |
| 1727 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval, |
| 1728 | IFLA_BR_PAD)) |
| 1729 | return -EMSGSIZE; |
| 1730 | clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_membership_interval); |
| 1731 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval, |
| 1732 | IFLA_BR_PAD)) |
| 1733 | return -EMSGSIZE; |
| 1734 | clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_querier_interval); |
| 1735 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval, |
| 1736 | IFLA_BR_PAD)) |
| 1737 | return -EMSGSIZE; |
| 1738 | clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_query_interval); |
| 1739 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval, |
| 1740 | IFLA_BR_PAD)) |
| 1741 | return -EMSGSIZE; |
| 1742 | clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_query_response_interval); |
| 1743 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval, |
| 1744 | IFLA_BR_PAD)) |
| 1745 | return -EMSGSIZE; |
| 1746 | clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_startup_query_interval); |
| 1747 | if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval, |
| 1748 | IFLA_BR_PAD)) |
| 1749 | return -EMSGSIZE; |
| 1750 | #endif |
| 1751 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 1752 | if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, |
| 1753 | br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) || |
| 1754 | nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, |
| 1755 | br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) || |
| 1756 | nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, |
| 1757 | br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0)) |
| 1758 | return -EMSGSIZE; |
| 1759 | #endif |
| 1760 | |
| 1761 | return 0; |
| 1762 | } |
| 1763 | |
| 1764 | static size_t br_get_linkxstats_size(const struct net_device *dev, int attr) |
| 1765 | { |
| 1766 | struct net_bridge_port *p = NULL; |
| 1767 | struct net_bridge_vlan_group *vg; |
| 1768 | struct net_bridge_vlan *v; |
| 1769 | struct net_bridge *br; |
| 1770 | int numvls = 0; |
| 1771 | |
| 1772 | switch (attr) { |
| 1773 | case IFLA_STATS_LINK_XSTATS: |
| 1774 | br = netdev_priv(dev); |
| 1775 | vg = br_vlan_group(br); |
| 1776 | break; |
| 1777 | case IFLA_STATS_LINK_XSTATS_SLAVE: |
| 1778 | p = br_port_get_rtnl(dev); |
| 1779 | if (!p) |
| 1780 | return 0; |
| 1781 | vg = nbp_vlan_group(p); |
| 1782 | break; |
| 1783 | default: |
| 1784 | return 0; |
| 1785 | } |
| 1786 | |
| 1787 | if (vg) { |
| 1788 | /* we need to count all, even placeholder entries */ |
| 1789 | list_for_each_entry(v, &vg->vlan_list, vlist) |
| 1790 | numvls++; |
| 1791 | } |
| 1792 | |
| 1793 | return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) + |
| 1794 | nla_total_size_64bit(sizeof(struct br_mcast_stats)) + |
| 1795 | (p ? nla_total_size_64bit(sizeof(p->stp_xstats)) : 0) + |
| 1796 | nla_total_size(0); |
| 1797 | } |
| 1798 | |
| 1799 | static int br_fill_linkxstats(struct sk_buff *skb, |
| 1800 | const struct net_device *dev, |
| 1801 | int *prividx, int attr) |
| 1802 | { |
| 1803 | struct nlattr *nla __maybe_unused; |
| 1804 | struct net_bridge_port *p = NULL; |
| 1805 | struct net_bridge_vlan_group *vg; |
| 1806 | struct net_bridge_vlan *v; |
| 1807 | struct net_bridge *br; |
| 1808 | struct nlattr *nest; |
| 1809 | int vl_idx = 0; |
| 1810 | |
| 1811 | switch (attr) { |
| 1812 | case IFLA_STATS_LINK_XSTATS: |
| 1813 | br = netdev_priv(dev); |
| 1814 | vg = br_vlan_group(br); |
| 1815 | break; |
| 1816 | case IFLA_STATS_LINK_XSTATS_SLAVE: |
| 1817 | p = br_port_get_rtnl(dev); |
| 1818 | if (!p) |
| 1819 | return 0; |
| 1820 | br = p->br; |
| 1821 | vg = nbp_vlan_group(p); |
| 1822 | break; |
| 1823 | default: |
| 1824 | return -EINVAL; |
| 1825 | } |
| 1826 | |
| 1827 | nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE); |
| 1828 | if (!nest) |
| 1829 | return -EMSGSIZE; |
| 1830 | |
| 1831 | if (vg) { |
| 1832 | u16 pvid; |
| 1833 | |
| 1834 | pvid = br_get_pvid(vg); |
| 1835 | list_for_each_entry(v, &vg->vlan_list, vlist) { |
| 1836 | struct bridge_vlan_xstats vxi; |
| 1837 | struct pcpu_sw_netstats stats; |
| 1838 | |
| 1839 | if (++vl_idx < *prividx) |
| 1840 | continue; |
| 1841 | memset(&vxi, 0, sizeof(vxi)); |
| 1842 | vxi.vid = v->vid; |
| 1843 | vxi.flags = v->flags; |
| 1844 | if (v->vid == pvid) |
| 1845 | vxi.flags |= BRIDGE_VLAN_INFO_PVID; |
| 1846 | br_vlan_get_stats(v, &stats); |
| 1847 | vxi.rx_bytes = u64_stats_read(&stats.rx_bytes); |
| 1848 | vxi.rx_packets = u64_stats_read(&stats.rx_packets); |
| 1849 | vxi.tx_bytes = u64_stats_read(&stats.tx_bytes); |
| 1850 | vxi.tx_packets = u64_stats_read(&stats.tx_packets); |
| 1851 | |
| 1852 | if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi)) |
| 1853 | goto nla_put_failure; |
| 1854 | } |
| 1855 | } |
| 1856 | |
| 1857 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 1858 | if (++vl_idx >= *prividx) { |
| 1859 | nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST, |
| 1860 | sizeof(struct br_mcast_stats), |
| 1861 | BRIDGE_XSTATS_PAD); |
| 1862 | if (!nla) |
| 1863 | goto nla_put_failure; |
| 1864 | br_multicast_get_stats(br, p, nla_data(nla)); |
| 1865 | } |
| 1866 | #endif |
| 1867 | |
| 1868 | if (p) { |
| 1869 | nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP, |
| 1870 | sizeof(p->stp_xstats), |
| 1871 | BRIDGE_XSTATS_PAD); |
| 1872 | if (!nla) |
| 1873 | goto nla_put_failure; |
| 1874 | |
| 1875 | spin_lock_bh(&br->lock); |
| 1876 | memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats)); |
| 1877 | spin_unlock_bh(&br->lock); |
| 1878 | } |
| 1879 | |
| 1880 | nla_nest_end(skb, nest); |
| 1881 | *prividx = 0; |
| 1882 | |
| 1883 | return 0; |
| 1884 | |
| 1885 | nla_put_failure: |
| 1886 | nla_nest_end(skb, nest); |
| 1887 | *prividx = vl_idx; |
| 1888 | |
| 1889 | return -EMSGSIZE; |
| 1890 | } |
| 1891 | |
| 1892 | static struct rtnl_af_ops br_af_ops __read_mostly = { |
| 1893 | .family = AF_BRIDGE, |
| 1894 | .get_link_af_size = br_get_link_af_size_filtered, |
| 1895 | }; |
| 1896 | |
| 1897 | struct rtnl_link_ops br_link_ops __read_mostly = { |
| 1898 | .kind = "bridge", |
| 1899 | .priv_size = sizeof(struct net_bridge), |
| 1900 | .setup = br_dev_setup, |
| 1901 | .maxtype = IFLA_BR_MAX, |
| 1902 | .policy = br_policy, |
| 1903 | .validate = br_validate, |
| 1904 | .newlink = br_dev_newlink, |
| 1905 | .changelink = br_changelink, |
| 1906 | .dellink = br_dev_delete, |
| 1907 | .get_size = br_get_size, |
| 1908 | .fill_info = br_fill_info, |
| 1909 | .fill_linkxstats = br_fill_linkxstats, |
| 1910 | .get_linkxstats_size = br_get_linkxstats_size, |
| 1911 | |
| 1912 | .slave_maxtype = IFLA_BRPORT_MAX, |
| 1913 | .slave_policy = br_port_policy, |
| 1914 | .slave_changelink = br_port_slave_changelink, |
| 1915 | .get_slave_size = br_port_get_slave_size, |
| 1916 | .fill_slave_info = br_port_fill_slave_info, |
| 1917 | }; |
| 1918 | |
| 1919 | int __init br_netlink_init(void) |
| 1920 | { |
| 1921 | int err; |
| 1922 | |
| 1923 | br_vlan_rtnl_init(); |
| 1924 | rtnl_af_register(&br_af_ops); |
| 1925 | |
| 1926 | err = rtnl_link_register(&br_link_ops); |
| 1927 | if (err) |
| 1928 | goto out_af; |
| 1929 | |
| 1930 | return 0; |
| 1931 | |
| 1932 | out_af: |
| 1933 | rtnl_af_unregister(&br_af_ops); |
| 1934 | return err; |
| 1935 | } |
| 1936 | |
| 1937 | void br_netlink_fini(void) |
| 1938 | { |
| 1939 | br_vlan_rtnl_uninit(); |
| 1940 | rtnl_af_unregister(&br_af_ops); |
| 1941 | rtnl_link_unregister(&br_link_ops); |
| 1942 | } |