net: bridge: vlan: add support for mcast querier 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             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 }