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 u8 range_mc_rtr = br_vlan_multicast_router(range_end); 44 u8 curr_mc_rtr = br_vlan_multicast_router(v_curr); 45 46 return v_curr->state == range_end->state && 47 __vlan_tun_can_enter_range(v_curr, range_end) && 48 curr_mc_rtr == range_mc_rtr; 49 } 50 51 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v) 52 { 53 if (nla_put_u8(skb, BRIDGE_VLANDB_ENTRY_STATE, br_vlan_get_state(v)) || 54 !__vlan_tun_put(skb, v)) 55 return false; 56 57 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 58 if (nla_put_u8(skb, BRIDGE_VLANDB_ENTRY_MCAST_ROUTER, 59 br_vlan_multicast_router(v))) 60 return false; 61 #endif 62 63 return true; 64 } 65 66 size_t br_vlan_opts_nl_size(void) 67 { 68 return nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_ENTRY_STATE */ 69 + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY_TUNNEL_INFO */ 70 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_TINFO_ID */ 71 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 72 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_ENTRY_MCAST_ROUTER */ 73 #endif 74 + 0; 75 } 76 77 static int br_vlan_modify_state(struct net_bridge_vlan_group *vg, 78 struct net_bridge_vlan *v, 79 u8 state, 80 bool *changed, 81 struct netlink_ext_ack *extack) 82 { 83 struct net_bridge *br; 84 85 ASSERT_RTNL(); 86 87 if (state > BR_STATE_BLOCKING) { 88 NL_SET_ERR_MSG_MOD(extack, "Invalid vlan state"); 89 return -EINVAL; 90 } 91 92 if (br_vlan_is_brentry(v)) 93 br = v->br; 94 else 95 br = v->port->br; 96 97 if (br->stp_enabled == BR_KERNEL_STP) { 98 NL_SET_ERR_MSG_MOD(extack, "Can't modify vlan state when using kernel STP"); 99 return -EBUSY; 100 } 101 102 if (br_opt_get(br, BROPT_MST_ENABLED)) { 103 NL_SET_ERR_MSG_MOD(extack, "Can't modify vlan state directly when MST is enabled"); 104 return -EBUSY; 105 } 106 107 if (v->state == state) 108 return 0; 109 110 if (v->vid == br_get_pvid(vg)) 111 br_vlan_set_pvid_state(vg, state); 112 113 br_vlan_set_state(v, state); 114 *changed = true; 115 116 return 0; 117 } 118 119 static const struct nla_policy br_vlandb_tinfo_pol[BRIDGE_VLANDB_TINFO_MAX + 1] = { 120 [BRIDGE_VLANDB_TINFO_ID] = { .type = NLA_U32 }, 121 [BRIDGE_VLANDB_TINFO_CMD] = { .type = NLA_U32 }, 122 }; 123 124 static int br_vlan_modify_tunnel(const struct net_bridge_port *p, 125 struct net_bridge_vlan *v, 126 struct nlattr **tb, 127 bool *changed, 128 struct netlink_ext_ack *extack) 129 { 130 struct nlattr *tun_tb[BRIDGE_VLANDB_TINFO_MAX + 1], *attr; 131 struct bridge_vlan_info *vinfo; 132 u32 tun_id = 0; 133 int cmd, err; 134 135 if (!p) { 136 NL_SET_ERR_MSG_MOD(extack, "Can't modify tunnel mapping of non-port vlans"); 137 return -EINVAL; 138 } 139 if (!(p->flags & BR_VLAN_TUNNEL)) { 140 NL_SET_ERR_MSG_MOD(extack, "Port doesn't have tunnel flag set"); 141 return -EINVAL; 142 } 143 144 attr = tb[BRIDGE_VLANDB_ENTRY_TUNNEL_INFO]; 145 err = nla_parse_nested(tun_tb, BRIDGE_VLANDB_TINFO_MAX, attr, 146 br_vlandb_tinfo_pol, extack); 147 if (err) 148 return err; 149 150 if (!tun_tb[BRIDGE_VLANDB_TINFO_CMD]) { 151 NL_SET_ERR_MSG_MOD(extack, "Missing tunnel command attribute"); 152 return -ENOENT; 153 } 154 cmd = nla_get_u32(tun_tb[BRIDGE_VLANDB_TINFO_CMD]); 155 switch (cmd) { 156 case RTM_SETLINK: 157 if (!tun_tb[BRIDGE_VLANDB_TINFO_ID]) { 158 NL_SET_ERR_MSG_MOD(extack, "Missing tunnel id attribute"); 159 return -ENOENT; 160 } 161 /* when working on vlan ranges this is the starting tunnel id */ 162 tun_id = nla_get_u32(tun_tb[BRIDGE_VLANDB_TINFO_ID]); 163 /* vlan info attr is guaranteed by br_vlan_rtm_process_one */ 164 vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]); 165 /* tunnel ids are mapped to each vlan in increasing order, 166 * the starting vlan is in BRIDGE_VLANDB_ENTRY_INFO and v is the 167 * current vlan, so we compute: tun_id + v - vinfo->vid 168 */ 169 tun_id += v->vid - vinfo->vid; 170 break; 171 case RTM_DELLINK: 172 break; 173 default: 174 NL_SET_ERR_MSG_MOD(extack, "Unsupported tunnel command"); 175 return -EINVAL; 176 } 177 178 return br_vlan_tunnel_info(p, cmd, v->vid, tun_id, changed); 179 } 180 181 static int br_vlan_process_one_opts(const struct net_bridge *br, 182 const struct net_bridge_port *p, 183 struct net_bridge_vlan_group *vg, 184 struct net_bridge_vlan *v, 185 struct nlattr **tb, 186 bool *changed, 187 struct netlink_ext_ack *extack) 188 { 189 int err; 190 191 *changed = false; 192 if (tb[BRIDGE_VLANDB_ENTRY_STATE]) { 193 u8 state = nla_get_u8(tb[BRIDGE_VLANDB_ENTRY_STATE]); 194 195 err = br_vlan_modify_state(vg, v, state, changed, extack); 196 if (err) 197 return err; 198 } 199 if (tb[BRIDGE_VLANDB_ENTRY_TUNNEL_INFO]) { 200 err = br_vlan_modify_tunnel(p, v, tb, changed, extack); 201 if (err) 202 return err; 203 } 204 205 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 206 if (tb[BRIDGE_VLANDB_ENTRY_MCAST_ROUTER]) { 207 u8 val; 208 209 val = nla_get_u8(tb[BRIDGE_VLANDB_ENTRY_MCAST_ROUTER]); 210 err = br_multicast_set_vlan_router(v, val); 211 if (err) 212 return err; 213 *changed = true; 214 } 215 #endif 216 217 return 0; 218 } 219 220 int br_vlan_process_options(const struct net_bridge *br, 221 const struct net_bridge_port *p, 222 struct net_bridge_vlan *range_start, 223 struct net_bridge_vlan *range_end, 224 struct nlattr **tb, 225 struct netlink_ext_ack *extack) 226 { 227 struct net_bridge_vlan *v, *curr_start = NULL, *curr_end = NULL; 228 struct net_bridge_vlan_group *vg; 229 int vid, err = 0; 230 u16 pvid; 231 232 if (p) 233 vg = nbp_vlan_group(p); 234 else 235 vg = br_vlan_group(br); 236 237 if (!range_start || !br_vlan_should_use(range_start)) { 238 NL_SET_ERR_MSG_MOD(extack, "Vlan range start doesn't exist, can't process options"); 239 return -ENOENT; 240 } 241 if (!range_end || !br_vlan_should_use(range_end)) { 242 NL_SET_ERR_MSG_MOD(extack, "Vlan range end doesn't exist, can't process options"); 243 return -ENOENT; 244 } 245 246 pvid = br_get_pvid(vg); 247 for (vid = range_start->vid; vid <= range_end->vid; vid++) { 248 bool changed = false; 249 250 v = br_vlan_find(vg, vid); 251 if (!v || !br_vlan_should_use(v)) { 252 NL_SET_ERR_MSG_MOD(extack, "Vlan in range doesn't exist, can't process options"); 253 err = -ENOENT; 254 break; 255 } 256 257 err = br_vlan_process_one_opts(br, p, vg, v, tb, &changed, 258 extack); 259 if (err) 260 break; 261 262 if (changed) { 263 /* vlan options changed, check for range */ 264 if (!curr_start) { 265 curr_start = v; 266 curr_end = v; 267 continue; 268 } 269 270 if (v->vid == pvid || 271 !br_vlan_can_enter_range(v, curr_end)) { 272 br_vlan_notify(br, p, curr_start->vid, 273 curr_end->vid, RTM_NEWVLAN); 274 curr_start = v; 275 } 276 curr_end = v; 277 } else { 278 /* nothing changed and nothing to notify yet */ 279 if (!curr_start) 280 continue; 281 282 br_vlan_notify(br, p, curr_start->vid, curr_end->vid, 283 RTM_NEWVLAN); 284 curr_start = NULL; 285 curr_end = NULL; 286 } 287 } 288 if (curr_start) 289 br_vlan_notify(br, p, curr_start->vid, curr_end->vid, 290 RTM_NEWVLAN); 291 292 return err; 293 } 294 295 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr, 296 const struct net_bridge_vlan *r_end) 297 { 298 return v_curr->vid - r_end->vid == 1 && 299 ((v_curr->priv_flags ^ r_end->priv_flags) & 300 BR_VLFLAG_GLOBAL_MCAST_ENABLED) == 0 && 301 br_multicast_ctx_options_equal(&v_curr->br_mcast_ctx, 302 &r_end->br_mcast_ctx); 303 } 304 305 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range, 306 const struct net_bridge_vlan *v_opts) 307 { 308 struct nlattr *nest2 __maybe_unused; 309 u64 clockval __maybe_unused; 310 struct nlattr *nest; 311 312 nest = nla_nest_start(skb, BRIDGE_VLANDB_GLOBAL_OPTIONS); 313 if (!nest) 314 return false; 315 316 if (nla_put_u16(skb, BRIDGE_VLANDB_GOPTS_ID, vid)) 317 goto out_err; 318 319 if (vid_range && vid < vid_range && 320 nla_put_u16(skb, BRIDGE_VLANDB_GOPTS_RANGE, vid_range)) 321 goto out_err; 322 323 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 324 if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING, 325 !!(v_opts->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED)) || 326 nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION, 327 v_opts->br_mcast_ctx.multicast_igmp_version) || 328 nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT, 329 v_opts->br_mcast_ctx.multicast_last_member_count) || 330 nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT, 331 v_opts->br_mcast_ctx.multicast_startup_query_count) || 332 nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER, 333 v_opts->br_mcast_ctx.multicast_querier) || 334 br_multicast_dump_querier_state(skb, &v_opts->br_mcast_ctx, 335 BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE)) 336 goto out_err; 337 338 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_last_member_interval); 339 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL, 340 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 341 goto out_err; 342 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_membership_interval); 343 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL, 344 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 345 goto out_err; 346 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_querier_interval); 347 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL, 348 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 349 goto out_err; 350 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_query_interval); 351 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL, 352 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 353 goto out_err; 354 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_query_response_interval); 355 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL, 356 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 357 goto out_err; 358 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_startup_query_interval); 359 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL, 360 clockval, BRIDGE_VLANDB_GOPTS_PAD)) 361 goto out_err; 362 363 if (br_rports_have_mc_router(&v_opts->br_mcast_ctx)) { 364 nest2 = nla_nest_start(skb, 365 BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS); 366 if (!nest2) 367 goto out_err; 368 369 rcu_read_lock(); 370 if (br_rports_fill_info(skb, &v_opts->br_mcast_ctx)) { 371 rcu_read_unlock(); 372 nla_nest_cancel(skb, nest2); 373 goto out_err; 374 } 375 rcu_read_unlock(); 376 377 nla_nest_end(skb, nest2); 378 } 379 380 #if IS_ENABLED(CONFIG_IPV6) 381 if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION, 382 v_opts->br_mcast_ctx.multicast_mld_version)) 383 goto out_err; 384 #endif 385 #endif 386 387 nla_nest_end(skb, nest); 388 389 return true; 390 391 out_err: 392 nla_nest_cancel(skb, nest); 393 return false; 394 } 395 396 static size_t rtnl_vlan_global_opts_nlmsg_size(const struct net_bridge_vlan *v) 397 { 398 return NLMSG_ALIGN(sizeof(struct br_vlan_msg)) 399 + nla_total_size(0) /* BRIDGE_VLANDB_GLOBAL_OPTIONS */ 400 + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_GOPTS_ID */ 401 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 402 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING */ 403 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION */ 404 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION */ 405 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT */ 406 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT */ 407 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL */ 408 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL */ 409 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL */ 410 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL */ 411 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL */ 412 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL */ 413 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER */ 414 + br_multicast_querier_state_size() /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE */ 415 + nla_total_size(0) /* BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS */ 416 + br_rports_size(&v->br_mcast_ctx) /* BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS */ 417 #endif 418 + nla_total_size(sizeof(u16)); /* BRIDGE_VLANDB_GOPTS_RANGE */ 419 } 420 421 static void br_vlan_global_opts_notify(const struct net_bridge *br, 422 u16 vid, u16 vid_range) 423 { 424 struct net_bridge_vlan *v; 425 struct br_vlan_msg *bvm; 426 struct nlmsghdr *nlh; 427 struct sk_buff *skb; 428 int err = -ENOBUFS; 429 430 /* right now notifications are done only with rtnl held */ 431 ASSERT_RTNL(); 432 433 /* need to find the vlan due to flags/options */ 434 v = br_vlan_find(br_vlan_group(br), vid); 435 if (!v) 436 return; 437 438 skb = nlmsg_new(rtnl_vlan_global_opts_nlmsg_size(v), GFP_KERNEL); 439 if (!skb) 440 goto out_err; 441 442 err = -EMSGSIZE; 443 nlh = nlmsg_put(skb, 0, 0, RTM_NEWVLAN, sizeof(*bvm), 0); 444 if (!nlh) 445 goto out_err; 446 bvm = nlmsg_data(nlh); 447 memset(bvm, 0, sizeof(*bvm)); 448 bvm->family = AF_BRIDGE; 449 bvm->ifindex = br->dev->ifindex; 450 451 if (!br_vlan_global_opts_fill(skb, vid, vid_range, v)) 452 goto out_err; 453 454 nlmsg_end(skb, nlh); 455 rtnl_notify(skb, dev_net(br->dev), 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL); 456 return; 457 458 out_err: 459 rtnl_set_sk_err(dev_net(br->dev), RTNLGRP_BRVLAN, err); 460 kfree_skb(skb); 461 } 462 463 static int br_vlan_process_global_one_opts(const struct net_bridge *br, 464 struct net_bridge_vlan_group *vg, 465 struct net_bridge_vlan *v, 466 struct nlattr **tb, 467 bool *changed, 468 struct netlink_ext_ack *extack) 469 { 470 int err __maybe_unused; 471 472 *changed = false; 473 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 474 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]) { 475 u8 mc_snooping; 476 477 mc_snooping = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]); 478 if (br_multicast_toggle_global_vlan(v, !!mc_snooping)) 479 *changed = true; 480 } 481 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]) { 482 u8 ver; 483 484 ver = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]); 485 err = br_multicast_set_igmp_version(&v->br_mcast_ctx, ver); 486 if (err) 487 return err; 488 *changed = true; 489 } 490 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]) { 491 u32 cnt; 492 493 cnt = nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]); 494 v->br_mcast_ctx.multicast_last_member_count = cnt; 495 *changed = true; 496 } 497 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]) { 498 u32 cnt; 499 500 cnt = nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]); 501 v->br_mcast_ctx.multicast_startup_query_count = cnt; 502 *changed = true; 503 } 504 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]) { 505 u64 val; 506 507 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]); 508 v->br_mcast_ctx.multicast_last_member_interval = clock_t_to_jiffies(val); 509 *changed = true; 510 } 511 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]) { 512 u64 val; 513 514 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]); 515 v->br_mcast_ctx.multicast_membership_interval = clock_t_to_jiffies(val); 516 *changed = true; 517 } 518 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]) { 519 u64 val; 520 521 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]); 522 v->br_mcast_ctx.multicast_querier_interval = clock_t_to_jiffies(val); 523 *changed = true; 524 } 525 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]) { 526 u64 val; 527 528 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]); 529 br_multicast_set_query_intvl(&v->br_mcast_ctx, val); 530 *changed = true; 531 } 532 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]) { 533 u64 val; 534 535 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]); 536 v->br_mcast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val); 537 *changed = true; 538 } 539 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]) { 540 u64 val; 541 542 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]); 543 br_multicast_set_startup_query_intvl(&v->br_mcast_ctx, val); 544 *changed = true; 545 } 546 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER]) { 547 u8 val; 548 549 val = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER]); 550 err = br_multicast_set_querier(&v->br_mcast_ctx, val); 551 if (err) 552 return err; 553 *changed = true; 554 } 555 #if IS_ENABLED(CONFIG_IPV6) 556 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]) { 557 u8 ver; 558 559 ver = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]); 560 err = br_multicast_set_mld_version(&v->br_mcast_ctx, ver); 561 if (err) 562 return err; 563 *changed = true; 564 } 565 #endif 566 #endif 567 568 return 0; 569 } 570 571 static const struct nla_policy br_vlan_db_gpol[BRIDGE_VLANDB_GOPTS_MAX + 1] = { 572 [BRIDGE_VLANDB_GOPTS_ID] = { .type = NLA_U16 }, 573 [BRIDGE_VLANDB_GOPTS_RANGE] = { .type = NLA_U16 }, 574 [BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING] = { .type = NLA_U8 }, 575 [BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION] = { .type = NLA_U8 }, 576 [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, 577 [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER] = { .type = NLA_U8 }, 578 [BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION] = { .type = NLA_U8 }, 579 [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 }, 580 [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 }, 581 [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 }, 582 [BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 }, 583 [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL] = { .type = NLA_U64 }, 584 [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, 585 [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, 586 }; 587 588 int br_vlan_rtm_process_global_options(struct net_device *dev, 589 const struct nlattr *attr, 590 int cmd, 591 struct netlink_ext_ack *extack) 592 { 593 struct net_bridge_vlan *v, *curr_start = NULL, *curr_end = NULL; 594 struct nlattr *tb[BRIDGE_VLANDB_GOPTS_MAX + 1]; 595 struct net_bridge_vlan_group *vg; 596 u16 vid, vid_range = 0; 597 struct net_bridge *br; 598 int err = 0; 599 600 if (cmd != RTM_NEWVLAN) { 601 NL_SET_ERR_MSG_MOD(extack, "Global vlan options support only set operation"); 602 return -EINVAL; 603 } 604 if (!netif_is_bridge_master(dev)) { 605 NL_SET_ERR_MSG_MOD(extack, "Global vlan options can only be set on bridge device"); 606 return -EINVAL; 607 } 608 br = netdev_priv(dev); 609 vg = br_vlan_group(br); 610 if (WARN_ON(!vg)) 611 return -ENODEV; 612 613 err = nla_parse_nested(tb, BRIDGE_VLANDB_GOPTS_MAX, attr, 614 br_vlan_db_gpol, extack); 615 if (err) 616 return err; 617 618 if (!tb[BRIDGE_VLANDB_GOPTS_ID]) { 619 NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry id"); 620 return -EINVAL; 621 } 622 vid = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_ID]); 623 if (!br_vlan_valid_id(vid, extack)) 624 return -EINVAL; 625 626 if (tb[BRIDGE_VLANDB_GOPTS_RANGE]) { 627 vid_range = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_RANGE]); 628 if (!br_vlan_valid_id(vid_range, extack)) 629 return -EINVAL; 630 if (vid >= vid_range) { 631 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id"); 632 return -EINVAL; 633 } 634 } else { 635 vid_range = vid; 636 } 637 638 for (; vid <= vid_range; vid++) { 639 bool changed = false; 640 641 v = br_vlan_find(vg, vid); 642 if (!v) { 643 NL_SET_ERR_MSG_MOD(extack, "Vlan in range doesn't exist, can't process global options"); 644 err = -ENOENT; 645 break; 646 } 647 648 err = br_vlan_process_global_one_opts(br, vg, v, tb, &changed, 649 extack); 650 if (err) 651 break; 652 653 if (changed) { 654 /* vlan options changed, check for range */ 655 if (!curr_start) { 656 curr_start = v; 657 curr_end = v; 658 continue; 659 } 660 661 if (!br_vlan_global_opts_can_enter_range(v, curr_end)) { 662 br_vlan_global_opts_notify(br, curr_start->vid, 663 curr_end->vid); 664 curr_start = v; 665 } 666 curr_end = v; 667 } else { 668 /* nothing changed and nothing to notify yet */ 669 if (!curr_start) 670 continue; 671 672 br_vlan_global_opts_notify(br, curr_start->vid, 673 curr_end->vid); 674 curr_start = NULL; 675 curr_end = NULL; 676 } 677 } 678 if (curr_start) 679 br_vlan_global_opts_notify(br, curr_start->vid, curr_end->vid); 680 681 return err; 682 } 683