net: bridge: vlan: add support for mcast startup query interval global option
[linux-2.6-microblaze.git] / 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         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                 goto out_err;
299
300         clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_last_member_interval);
301         if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL,
302                               clockval, BRIDGE_VLANDB_GOPTS_PAD))
303                 goto out_err;
304         clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_membership_interval);
305         if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL,
306                               clockval, BRIDGE_VLANDB_GOPTS_PAD))
307                 goto out_err;
308         clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_querier_interval);
309         if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL,
310                               clockval, BRIDGE_VLANDB_GOPTS_PAD))
311                 goto out_err;
312         clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_query_interval);
313         if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL,
314                               clockval, BRIDGE_VLANDB_GOPTS_PAD))
315                 goto out_err;
316         clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_query_response_interval);
317         if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL,
318                               clockval, BRIDGE_VLANDB_GOPTS_PAD))
319                 goto out_err;
320         clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_startup_query_interval);
321         if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL,
322                               clockval, BRIDGE_VLANDB_GOPTS_PAD))
323                 goto out_err;
324
325 #if IS_ENABLED(CONFIG_IPV6)
326         if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION,
327                        v_opts->br_mcast_ctx.multicast_mld_version))
328                 goto out_err;
329 #endif
330 #endif
331
332         nla_nest_end(skb, nest);
333
334         return true;
335
336 out_err:
337         nla_nest_cancel(skb, nest);
338         return false;
339 }
340
341 static size_t rtnl_vlan_global_opts_nlmsg_size(void)
342 {
343         return NLMSG_ALIGN(sizeof(struct br_vlan_msg))
344                 + nla_total_size(0) /* BRIDGE_VLANDB_GLOBAL_OPTIONS */
345                 + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_GOPTS_ID */
346 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
347                 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING */
348                 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION */
349                 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION */
350                 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT */
351                 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT */
352                 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL */
353                 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL */
354                 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL */
355                 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL */
356                 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL */
357                 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL */
358 #endif
359                 + nla_total_size(sizeof(u16)); /* BRIDGE_VLANDB_GOPTS_RANGE */
360 }
361
362 static void br_vlan_global_opts_notify(const struct net_bridge *br,
363                                        u16 vid, u16 vid_range)
364 {
365         struct net_bridge_vlan *v;
366         struct br_vlan_msg *bvm;
367         struct nlmsghdr *nlh;
368         struct sk_buff *skb;
369         int err = -ENOBUFS;
370
371         /* right now notifications are done only with rtnl held */
372         ASSERT_RTNL();
373
374         skb = nlmsg_new(rtnl_vlan_global_opts_nlmsg_size(), GFP_KERNEL);
375         if (!skb)
376                 goto out_err;
377
378         err = -EMSGSIZE;
379         nlh = nlmsg_put(skb, 0, 0, RTM_NEWVLAN, sizeof(*bvm), 0);
380         if (!nlh)
381                 goto out_err;
382         bvm = nlmsg_data(nlh);
383         memset(bvm, 0, sizeof(*bvm));
384         bvm->family = AF_BRIDGE;
385         bvm->ifindex = br->dev->ifindex;
386
387         /* need to find the vlan due to flags/options */
388         v = br_vlan_find(br_vlan_group(br), vid);
389         if (!v)
390                 goto out_kfree;
391
392         if (!br_vlan_global_opts_fill(skb, vid, vid_range, v))
393                 goto out_err;
394
395         nlmsg_end(skb, nlh);
396         rtnl_notify(skb, dev_net(br->dev), 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL);
397         return;
398
399 out_err:
400         rtnl_set_sk_err(dev_net(br->dev), RTNLGRP_BRVLAN, err);
401 out_kfree:
402         kfree_skb(skb);
403 }
404
405 static int br_vlan_process_global_one_opts(const struct net_bridge *br,
406                                            struct net_bridge_vlan_group *vg,
407                                            struct net_bridge_vlan *v,
408                                            struct nlattr **tb,
409                                            bool *changed,
410                                            struct netlink_ext_ack *extack)
411 {
412         int err __maybe_unused;
413
414         *changed = false;
415 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
416         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]) {
417                 u8 mc_snooping;
418
419                 mc_snooping = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]);
420                 if (br_multicast_toggle_global_vlan(v, !!mc_snooping))
421                         *changed = true;
422         }
423         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]) {
424                 u8 ver;
425
426                 ver = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]);
427                 err = br_multicast_set_igmp_version(&v->br_mcast_ctx, ver);
428                 if (err)
429                         return err;
430                 *changed = true;
431         }
432         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]) {
433                 u32 cnt;
434
435                 cnt = nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]);
436                 v->br_mcast_ctx.multicast_last_member_count = cnt;
437                 *changed = true;
438         }
439         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]) {
440                 u32 cnt;
441
442                 cnt = nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]);
443                 v->br_mcast_ctx.multicast_startup_query_count = cnt;
444                 *changed = true;
445         }
446         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]) {
447                 u64 val;
448
449                 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]);
450                 v->br_mcast_ctx.multicast_last_member_interval = clock_t_to_jiffies(val);
451                 *changed = true;
452         }
453         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]) {
454                 u64 val;
455
456                 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]);
457                 v->br_mcast_ctx.multicast_membership_interval = clock_t_to_jiffies(val);
458                 *changed = true;
459         }
460         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]) {
461                 u64 val;
462
463                 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]);
464                 v->br_mcast_ctx.multicast_querier_interval = clock_t_to_jiffies(val);
465                 *changed = true;
466         }
467         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]) {
468                 u64 val;
469
470                 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]);
471                 v->br_mcast_ctx.multicast_query_interval = clock_t_to_jiffies(val);
472                 *changed = true;
473         }
474         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]) {
475                 u64 val;
476
477                 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]);
478                 v->br_mcast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val);
479                 *changed = true;
480         }
481         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]) {
482                 u64 val;
483
484                 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]);
485                 v->br_mcast_ctx.multicast_startup_query_interval = clock_t_to_jiffies(val);
486                 *changed = true;
487         }
488 #if IS_ENABLED(CONFIG_IPV6)
489         if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]) {
490                 u8 ver;
491
492                 ver = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]);
493                 err = br_multicast_set_mld_version(&v->br_mcast_ctx, ver);
494                 if (err)
495                         return err;
496                 *changed = true;
497         }
498 #endif
499 #endif
500
501         return 0;
502 }
503
504 static const struct nla_policy br_vlan_db_gpol[BRIDGE_VLANDB_GOPTS_MAX + 1] = {
505         [BRIDGE_VLANDB_GOPTS_ID]        = { .type = NLA_U16 },
506         [BRIDGE_VLANDB_GOPTS_RANGE]     = { .type = NLA_U16 },
507         [BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]    = { .type = NLA_U8 },
508         [BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION] = { .type = NLA_U8 },
509         [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
510         [BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]        = { .type = NLA_U8 },
511         [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]     = { .type = NLA_U32 },
512         [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]   = { .type = NLA_U32 },
513         [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]   = { .type = NLA_U64 },
514         [BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]    = { .type = NLA_U64 },
515         [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]       = { .type = NLA_U64 },
516         [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
517         [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
518 };
519
520 int br_vlan_rtm_process_global_options(struct net_device *dev,
521                                        const struct nlattr *attr,
522                                        int cmd,
523                                        struct netlink_ext_ack *extack)
524 {
525         struct net_bridge_vlan *v, *curr_start = NULL, *curr_end = NULL;
526         struct nlattr *tb[BRIDGE_VLANDB_GOPTS_MAX + 1];
527         struct net_bridge_vlan_group *vg;
528         u16 vid, vid_range = 0;
529         struct net_bridge *br;
530         int err = 0;
531
532         if (cmd != RTM_NEWVLAN) {
533                 NL_SET_ERR_MSG_MOD(extack, "Global vlan options support only set operation");
534                 return -EINVAL;
535         }
536         if (!netif_is_bridge_master(dev)) {
537                 NL_SET_ERR_MSG_MOD(extack, "Global vlan options can only be set on bridge device");
538                 return -EINVAL;
539         }
540         br = netdev_priv(dev);
541         vg = br_vlan_group(br);
542         if (WARN_ON(!vg))
543                 return -ENODEV;
544
545         err = nla_parse_nested(tb, BRIDGE_VLANDB_GOPTS_MAX, attr,
546                                br_vlan_db_gpol, extack);
547         if (err)
548                 return err;
549
550         if (!tb[BRIDGE_VLANDB_GOPTS_ID]) {
551                 NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry id");
552                 return -EINVAL;
553         }
554         vid = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_ID]);
555         if (!br_vlan_valid_id(vid, extack))
556                 return -EINVAL;
557
558         if (tb[BRIDGE_VLANDB_GOPTS_RANGE]) {
559                 vid_range = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_RANGE]);
560                 if (!br_vlan_valid_id(vid_range, extack))
561                         return -EINVAL;
562                 if (vid >= vid_range) {
563                         NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
564                         return -EINVAL;
565                 }
566         } else {
567                 vid_range = vid;
568         }
569
570         for (; vid <= vid_range; vid++) {
571                 bool changed = false;
572
573                 v = br_vlan_find(vg, vid);
574                 if (!v) {
575                         NL_SET_ERR_MSG_MOD(extack, "Vlan in range doesn't exist, can't process global options");
576                         err = -ENOENT;
577                         break;
578                 }
579
580                 err = br_vlan_process_global_one_opts(br, vg, v, tb, &changed,
581                                                       extack);
582                 if (err)
583                         break;
584
585                 if (changed) {
586                         /* vlan options changed, check for range */
587                         if (!curr_start) {
588                                 curr_start = v;
589                                 curr_end = v;
590                                 continue;
591                         }
592
593                         if (!br_vlan_global_opts_can_enter_range(v, curr_end)) {
594                                 br_vlan_global_opts_notify(br, curr_start->vid,
595                                                            curr_end->vid);
596                                 curr_start = v;
597                         }
598                         curr_end = v;
599                 } else {
600                         /* nothing changed and nothing to notify yet */
601                         if (!curr_start)
602                                 continue;
603
604                         br_vlan_global_opts_notify(br, curr_start->vid,
605                                                    curr_end->vid);
606                         curr_start = NULL;
607                         curr_end = NULL;
608                 }
609         }
610         if (curr_start)
611                 br_vlan_global_opts_notify(br, curr_start->vid, curr_end->vid);
612
613         return err;
614 }