1 // SPDX-License-Identifier: GPL-2.0-only 2 // Copyright (c) 2020, Nikolay Aleksandrov <nikolay@cumulusnetworks.com> 3 #include <linux/kernel.h> 4 #include <linux/netdevice.h> 5 #include <linux/rtnetlink.h> 6 #include <linux/slab.h> 7 #include <net/ip_tunnels.h> 8 9 #include "br_private.h" 10 #include "br_private_tunnel.h" 11 12 static bool __vlan_tun_put(struct sk_buff *skb, const struct net_bridge_vlan *v) 13 { 14 __be32 tid = tunnel_id_to_key32(v->tinfo.tunnel_id); 15 struct nlattr *nest; 16 17 if (!v->tinfo.tunnel_dst) 18 return true; 19 20 nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY_TUNNEL_INFO); 21 if (!nest) 22 return false; 23 if (nla_put_u32(skb, BRIDGE_VLANDB_TINFO_ID, be32_to_cpu(tid))) { 24 nla_nest_cancel(skb, nest); 25 return false; 26 } 27 nla_nest_end(skb, nest); 28 29 return true; 30 } 31 32 static bool __vlan_tun_can_enter_range(const struct net_bridge_vlan *v_curr, 33 const struct net_bridge_vlan *range_end) 34 { 35 return (!v_curr->tinfo.tunnel_dst && !range_end->tinfo.tunnel_dst) || 36 vlan_tunid_inrange(v_curr, range_end); 37 } 38 39 /* check if the options' state of v_curr allow it to enter the range */ 40 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr, 41 const struct net_bridge_vlan *range_end) 42 { 43 return v_curr->state == range_end->state && 44 __vlan_tun_can_enter_range(v_curr, range_end); 45 } 46 47 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v) 48 { 49 return !nla_put_u8(skb, BRIDGE_VLANDB_ENTRY_STATE, 50 br_vlan_get_state(v)) && 51 __vlan_tun_put(skb, v); 52 } 53 54 size_t br_vlan_opts_nl_size(void) 55 { 56 return nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_ENTRY_STATE */ 57 + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY_TUNNEL_INFO */ 58 + nla_total_size(sizeof(u32)); /* BRIDGE_VLANDB_TINFO_ID */ 59 } 60 61 static int br_vlan_modify_state(struct net_bridge_vlan_group *vg, 62 struct net_bridge_vlan *v, 63 u8 state, 64 bool *changed, 65 struct netlink_ext_ack *extack) 66 { 67 struct net_bridge *br; 68 69 ASSERT_RTNL(); 70 71 if (state > BR_STATE_BLOCKING) { 72 NL_SET_ERR_MSG_MOD(extack, "Invalid vlan state"); 73 return -EINVAL; 74 } 75 76 if (br_vlan_is_brentry(v)) 77 br = v->br; 78 else 79 br = v->port->br; 80 81 if (br->stp_enabled == BR_KERNEL_STP) { 82 NL_SET_ERR_MSG_MOD(extack, "Can't modify vlan state when using kernel STP"); 83 return -EBUSY; 84 } 85 86 if (v->state == state) 87 return 0; 88 89 if (v->vid == br_get_pvid(vg)) 90 br_vlan_set_pvid_state(vg, state); 91 92 br_vlan_set_state(v, state); 93 *changed = true; 94 95 return 0; 96 } 97 98 static const struct nla_policy br_vlandb_tinfo_pol[BRIDGE_VLANDB_TINFO_MAX + 1] = { 99 [BRIDGE_VLANDB_TINFO_ID] = { .type = NLA_U32 }, 100 [BRIDGE_VLANDB_TINFO_CMD] = { .type = NLA_U32 }, 101 }; 102 103 static int br_vlan_modify_tunnel(const struct net_bridge_port *p, 104 struct net_bridge_vlan *v, 105 struct nlattr **tb, 106 bool *changed, 107 struct netlink_ext_ack *extack) 108 { 109 struct nlattr *tun_tb[BRIDGE_VLANDB_TINFO_MAX + 1], *attr; 110 struct bridge_vlan_info *vinfo; 111 u32 tun_id = 0; 112 int cmd, err; 113 114 if (!p) { 115 NL_SET_ERR_MSG_MOD(extack, "Can't modify tunnel mapping of non-port vlans"); 116 return -EINVAL; 117 } 118 if (!(p->flags & BR_VLAN_TUNNEL)) { 119 NL_SET_ERR_MSG_MOD(extack, "Port doesn't have tunnel flag set"); 120 return -EINVAL; 121 } 122 123 attr = tb[BRIDGE_VLANDB_ENTRY_TUNNEL_INFO]; 124 err = nla_parse_nested(tun_tb, BRIDGE_VLANDB_TINFO_MAX, attr, 125 br_vlandb_tinfo_pol, extack); 126 if (err) 127 return err; 128 129 if (!tun_tb[BRIDGE_VLANDB_TINFO_CMD]) { 130 NL_SET_ERR_MSG_MOD(extack, "Missing tunnel command attribute"); 131 return -ENOENT; 132 } 133 cmd = nla_get_u32(tun_tb[BRIDGE_VLANDB_TINFO_CMD]); 134 switch (cmd) { 135 case RTM_SETLINK: 136 if (!tun_tb[BRIDGE_VLANDB_TINFO_ID]) { 137 NL_SET_ERR_MSG_MOD(extack, "Missing tunnel id attribute"); 138 return -ENOENT; 139 } 140 /* when working on vlan ranges this is the starting tunnel id */ 141 tun_id = nla_get_u32(tun_tb[BRIDGE_VLANDB_TINFO_ID]); 142 /* vlan info attr is guaranteed by br_vlan_rtm_process_one */ 143 vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]); 144 /* tunnel ids are mapped to each vlan in increasing order, 145 * the starting vlan is in BRIDGE_VLANDB_ENTRY_INFO and v is the 146 * current vlan, so we compute: tun_id + v - vinfo->vid 147 */ 148 tun_id += v->vid - vinfo->vid; 149 break; 150 case RTM_DELLINK: 151 break; 152 default: 153 NL_SET_ERR_MSG_MOD(extack, "Unsupported tunnel command"); 154 return -EINVAL; 155 } 156 157 return br_vlan_tunnel_info(p, cmd, v->vid, tun_id, changed); 158 } 159 160 static int br_vlan_process_one_opts(const struct net_bridge *br, 161 const struct net_bridge_port *p, 162 struct net_bridge_vlan_group *vg, 163 struct net_bridge_vlan *v, 164 struct nlattr **tb, 165 bool *changed, 166 struct netlink_ext_ack *extack) 167 { 168 int err; 169 170 *changed = false; 171 if (tb[BRIDGE_VLANDB_ENTRY_STATE]) { 172 u8 state = nla_get_u8(tb[BRIDGE_VLANDB_ENTRY_STATE]); 173 174 err = br_vlan_modify_state(vg, v, state, changed, extack); 175 if (err) 176 return err; 177 } 178 if (tb[BRIDGE_VLANDB_ENTRY_TUNNEL_INFO]) { 179 err = br_vlan_modify_tunnel(p, v, tb, changed, extack); 180 if (err) 181 return err; 182 } 183 184 return 0; 185 } 186 187 int br_vlan_process_options(const struct net_bridge *br, 188 const struct net_bridge_port *p, 189 struct net_bridge_vlan *range_start, 190 struct net_bridge_vlan *range_end, 191 struct nlattr **tb, 192 struct netlink_ext_ack *extack) 193 { 194 struct net_bridge_vlan *v, *curr_start = NULL, *curr_end = NULL; 195 struct net_bridge_vlan_group *vg; 196 int vid, err = 0; 197 u16 pvid; 198 199 if (p) 200 vg = nbp_vlan_group(p); 201 else 202 vg = br_vlan_group(br); 203 204 if (!range_start || !br_vlan_should_use(range_start)) { 205 NL_SET_ERR_MSG_MOD(extack, "Vlan range start doesn't exist, can't process options"); 206 return -ENOENT; 207 } 208 if (!range_end || !br_vlan_should_use(range_end)) { 209 NL_SET_ERR_MSG_MOD(extack, "Vlan range end doesn't exist, can't process options"); 210 return -ENOENT; 211 } 212 213 pvid = br_get_pvid(vg); 214 for (vid = range_start->vid; vid <= range_end->vid; vid++) { 215 bool changed = false; 216 217 v = br_vlan_find(vg, vid); 218 if (!v || !br_vlan_should_use(v)) { 219 NL_SET_ERR_MSG_MOD(extack, "Vlan in range doesn't exist, can't process options"); 220 err = -ENOENT; 221 break; 222 } 223 224 err = br_vlan_process_one_opts(br, p, vg, v, tb, &changed, 225 extack); 226 if (err) 227 break; 228 229 if (changed) { 230 /* vlan options changed, check for range */ 231 if (!curr_start) { 232 curr_start = v; 233 curr_end = v; 234 continue; 235 } 236 237 if (v->vid == pvid || 238 !br_vlan_can_enter_range(v, curr_end)) { 239 br_vlan_notify(br, p, curr_start->vid, 240 curr_end->vid, RTM_NEWVLAN); 241 curr_start = v; 242 } 243 curr_end = v; 244 } else { 245 /* nothing changed and nothing to notify yet */ 246 if (!curr_start) 247 continue; 248 249 br_vlan_notify(br, p, curr_start->vid, curr_end->vid, 250 RTM_NEWVLAN); 251 curr_start = NULL; 252 curr_end = NULL; 253 } 254 } 255 if (curr_start) 256 br_vlan_notify(br, p, curr_start->vid, curr_end->vid, 257 RTM_NEWVLAN); 258 259 return err; 260 } 261 262 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr, 263 const struct net_bridge_vlan *r_end) 264 { 265 return v_curr->vid - r_end->vid == 1 && 266 ((v_curr->priv_flags ^ r_end->priv_flags) & 267 BR_VLFLAG_GLOBAL_MCAST_ENABLED) == 0 && 268 br_multicast_ctx_options_equal(&v_curr->br_mcast_ctx, 269 &r_end->br_mcast_ctx); 270 } 271 272 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range, 273 const struct net_bridge_vlan *v_opts) 274 { 275 u64 clockval __maybe_unused; 276 struct nlattr *nest; 277 278 nest = nla_nest_start(skb, BRIDGE_VLANDB_GLOBAL_OPTIONS); 279 if (!nest) 280 return false; 281 282 if (nla_put_u16(skb, BRIDGE_VLANDB_GOPTS_ID, vid)) 283 goto out_err; 284 285 if (vid_range && vid < vid_range && 286 nla_put_u16(skb, BRIDGE_VLANDB_GOPTS_RANGE, vid_range)) 287 goto out_err; 288 289 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 290 if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING, 291 !!(v_opts->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED)) || 292 nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION, 293 v_opts->br_mcast_ctx.multicast_igmp_version) || 294 nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT, 295 v_opts->br_mcast_ctx.multicast_last_member_count) || 296 nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT, 297 v_opts->br_mcast_ctx.multicast_startup_query_count) || 298 nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER, 299 v_opts->br_mcast_ctx.multicast_querier)) 300 goto out_err; 301 302 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_last_member_interval); 303 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL, 304 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 305 goto out_err; 306 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_membership_interval); 307 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL, 308 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 309 goto out_err; 310 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_querier_interval); 311 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL, 312 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 313 goto out_err; 314 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_query_interval); 315 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL, 316 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 317 goto out_err; 318 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_query_response_interval); 319 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL, 320 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 321 goto out_err; 322 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_startup_query_interval); 323 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL, 324 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 325 goto out_err; 326 327 #if IS_ENABLED(CONFIG_IPV6) 328 if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION, 329 v_opts->br_mcast_ctx.multicast_mld_version)) 330 goto out_err; 331 #endif 332 #endif 333 334 nla_nest_end(skb, nest); 335 336 return true; 337 338 out_err: 339 nla_nest_cancel(skb, nest); 340 return false; 341 } 342 343 static size_t rtnl_vlan_global_opts_nlmsg_size(void) 344 { 345 return NLMSG_ALIGN(sizeof(struct br_vlan_msg)) 346 + nla_total_size(0) /* BRIDGE_VLANDB_GLOBAL_OPTIONS */ 347 + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_GOPTS_ID */ 348 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 349 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING */ 350 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION */ 351 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION */ 352 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT */ 353 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT */ 354 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL */ 355 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL */ 356 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL */ 357 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL */ 358 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL */ 359 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL */ 360 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER */ 361 #endif 362 + nla_total_size(sizeof(u16)); /* BRIDGE_VLANDB_GOPTS_RANGE */ 363 } 364 365 static void br_vlan_global_opts_notify(const struct net_bridge *br, 366 u16 vid, u16 vid_range) 367 { 368 struct net_bridge_vlan *v; 369 struct br_vlan_msg *bvm; 370 struct nlmsghdr *nlh; 371 struct sk_buff *skb; 372 int err = -ENOBUFS; 373 374 /* right now notifications are done only with rtnl held */ 375 ASSERT_RTNL(); 376 377 skb = nlmsg_new(rtnl_vlan_global_opts_nlmsg_size(), GFP_KERNEL); 378 if (!skb) 379 goto out_err; 380 381 err = -EMSGSIZE; 382 nlh = nlmsg_put(skb, 0, 0, RTM_NEWVLAN, sizeof(*bvm), 0); 383 if (!nlh) 384 goto out_err; 385 bvm = nlmsg_data(nlh); 386 memset(bvm, 0, sizeof(*bvm)); 387 bvm->family = AF_BRIDGE; 388 bvm->ifindex = br->dev->ifindex; 389 390 /* need to find the vlan due to flags/options */ 391 v = br_vlan_find(br_vlan_group(br), vid); 392 if (!v) 393 goto out_kfree; 394 395 if (!br_vlan_global_opts_fill(skb, vid, vid_range, v)) 396 goto out_err; 397 398 nlmsg_end(skb, nlh); 399 rtnl_notify(skb, dev_net(br->dev), 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL); 400 return; 401 402 out_err: 403 rtnl_set_sk_err(dev_net(br->dev), RTNLGRP_BRVLAN, err); 404 out_kfree: 405 kfree_skb(skb); 406 } 407 408 static int br_vlan_process_global_one_opts(const struct net_bridge *br, 409 struct net_bridge_vlan_group *vg, 410 struct net_bridge_vlan *v, 411 struct nlattr **tb, 412 bool *changed, 413 struct netlink_ext_ack *extack) 414 { 415 int err __maybe_unused; 416 417 *changed = false; 418 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 419 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]) { 420 u8 mc_snooping; 421 422 mc_snooping = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]); 423 if (br_multicast_toggle_global_vlan(v, !!mc_snooping)) 424 *changed = true; 425 } 426 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]) { 427 u8 ver; 428 429 ver = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]); 430 err = br_multicast_set_igmp_version(&v->br_mcast_ctx, ver); 431 if (err) 432 return err; 433 *changed = true; 434 } 435 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]) { 436 u32 cnt; 437 438 cnt = nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]); 439 v->br_mcast_ctx.multicast_last_member_count = cnt; 440 *changed = true; 441 } 442 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]) { 443 u32 cnt; 444 445 cnt = nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]); 446 v->br_mcast_ctx.multicast_startup_query_count = cnt; 447 *changed = true; 448 } 449 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]) { 450 u64 val; 451 452 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]); 453 v->br_mcast_ctx.multicast_last_member_interval = clock_t_to_jiffies(val); 454 *changed = true; 455 } 456 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]) { 457 u64 val; 458 459 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]); 460 v->br_mcast_ctx.multicast_membership_interval = clock_t_to_jiffies(val); 461 *changed = true; 462 } 463 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]) { 464 u64 val; 465 466 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]); 467 v->br_mcast_ctx.multicast_querier_interval = clock_t_to_jiffies(val); 468 *changed = true; 469 } 470 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]) { 471 u64 val; 472 473 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]); 474 v->br_mcast_ctx.multicast_query_interval = clock_t_to_jiffies(val); 475 *changed = true; 476 } 477 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]) { 478 u64 val; 479 480 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]); 481 v->br_mcast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val); 482 *changed = true; 483 } 484 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]) { 485 u64 val; 486 487 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]); 488 v->br_mcast_ctx.multicast_startup_query_interval = clock_t_to_jiffies(val); 489 *changed = true; 490 } 491 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER]) { 492 u8 val; 493 494 val = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER]); 495 err = br_multicast_set_querier(&v->br_mcast_ctx, val); 496 if (err) 497 return err; 498 *changed = true; 499 } 500 #if IS_ENABLED(CONFIG_IPV6) 501 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]) { 502 u8 ver; 503 504 ver = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]); 505 err = br_multicast_set_mld_version(&v->br_mcast_ctx, ver); 506 if (err) 507 return err; 508 *changed = true; 509 } 510 #endif 511 #endif 512 513 return 0; 514 } 515 516 static const struct nla_policy br_vlan_db_gpol[BRIDGE_VLANDB_GOPTS_MAX + 1] = { 517 [BRIDGE_VLANDB_GOPTS_ID] = { .type = NLA_U16 }, 518 [BRIDGE_VLANDB_GOPTS_RANGE] = { .type = NLA_U16 }, 519 [BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING] = { .type = NLA_U8 }, 520 [BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION] = { .type = NLA_U8 }, 521 [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 522 [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER] = { .type = NLA_U8 }, 523 [BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, 524 [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 525 [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 526 [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 527 [BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 528 [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 529 [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 530 [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 531 }; 532 533 int br_vlan_rtm_process_global_options(struct net_device *dev, 534 const struct nlattr *attr, 535 int cmd, 536 struct netlink_ext_ack *extack) 537 { 538 struct net_bridge_vlan *v, *curr_start = NULL, *curr_end = NULL; 539 struct nlattr *tb[BRIDGE_VLANDB_GOPTS_MAX + 1]; 540 struct net_bridge_vlan_group *vg; 541 u16 vid, vid_range = 0; 542 struct net_bridge *br; 543 int err = 0; 544 545 if (cmd != RTM_NEWVLAN) { 546 NL_SET_ERR_MSG_MOD(extack, "Global vlan options support only set operation"); 547 return -EINVAL; 548 } 549 if (!netif_is_bridge_master(dev)) { 550 NL_SET_ERR_MSG_MOD(extack, "Global vlan options can only be set on bridge device"); 551 return -EINVAL; 552 } 553 br = netdev_priv(dev); 554 vg = br_vlan_group(br); 555 if (WARN_ON(!vg)) 556 return -ENODEV; 557 558 err = nla_parse_nested(tb, BRIDGE_VLANDB_GOPTS_MAX, attr, 559 br_vlan_db_gpol, extack); 560 if (err) 561 return err; 562 563 if (!tb[BRIDGE_VLANDB_GOPTS_ID]) { 564 NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry id"); 565 return -EINVAL; 566 } 567 vid = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_ID]); 568 if (!br_vlan_valid_id(vid, extack)) 569 return -EINVAL; 570 571 if (tb[BRIDGE_VLANDB_GOPTS_RANGE]) { 572 vid_range = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_RANGE]); 573 if (!br_vlan_valid_id(vid_range, extack)) 574 return -EINVAL; 575 if (vid >= vid_range) { 576 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id"); 577 return -EINVAL; 578 } 579 } else { 580 vid_range = vid; 581 } 582 583 for (; vid <= vid_range; vid++) { 584 bool changed = false; 585 586 v = br_vlan_find(vg, vid); 587 if (!v) { 588 NL_SET_ERR_MSG_MOD(extack, "Vlan in range doesn't exist, can't process global options"); 589 err = -ENOENT; 590 break; 591 } 592 593 err = br_vlan_process_global_one_opts(br, vg, v, tb, &changed, 594 extack); 595 if (err) 596 break; 597 598 if (changed) { 599 /* vlan options changed, check for range */ 600 if (!curr_start) { 601 curr_start = v; 602 curr_end = v; 603 continue; 604 } 605 606 if (!br_vlan_global_opts_can_enter_range(v, curr_end)) { 607 br_vlan_global_opts_notify(br, curr_start->vid, 608 curr_end->vid); 609 curr_start = v; 610 } 611 curr_end = v; 612 } else { 613 /* nothing changed and nothing to notify yet */ 614 if (!curr_start) 615 continue; 616 617 br_vlan_global_opts_notify(br, curr_start->vid, 618 curr_end->vid); 619 curr_start = NULL; 620 curr_end = NULL; 621 } 622 } 623 if (curr_start) 624 br_vlan_global_opts_notify(br, curr_start->vid, curr_end->vid); 625 626 return err; 627 } 628