net/bridge/br_vlan_options.c

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