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ipv6: raw: check passed optlen before reading
[linux-block.git] / net / bridge / br_vlan_options.c
CommitLineData
7a53e718
NA		 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>
188c67dd 7#include <net/ip_tunnels.h>
7a53e718
NA		 8
9#include "br_private.h"
188c67dd
NA		 10#include "br_private_tunnel.h"
11
12static 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);
fa388f29 15 struct nlattr *nest;
188c67dd
NA		 16
17 if (!v->tinfo.tunnel_dst)
18 return true;
19
fa388f29
NA		 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;
188c67dd
NA		 30}
31
32static 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}
7a53e718 38
99f7c5e0
NA		 39/* check if the options' state of v_curr allow it to enter the range */
40bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
41 const struct net_bridge_vlan *range_end)
7a53e718 42{
2796d846
NA		 43 u8 range_mc_rtr = br_vlan_multicast_router(range_end);
44 u8 curr_mc_rtr = br_vlan_multicast_router(v_curr);
45
188c67dd 46 return v_curr->state == range_end->state &&
2796d846
NA		 47 __vlan_tun_can_enter_range(v_curr, range_end) &&
48 curr_mc_rtr == range_mc_rtr;
7a53e718
NA		 49}
50
51bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v)
52{
2796d846
NA		 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;
7a53e718
NA		 64}
65
66size_t br_vlan_opts_nl_size(void)
67{
188c67dd 68 return nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_ENTRY_STATE */
fa388f29 69 + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY_TUNNEL_INFO */
2796d846
NA		 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;
a580c76d
NA		 75}
76
77static 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
7a53e718
NA		 111 return 0;
112}
a5d29ae2 113
fa388f29
NA		 114static const struct nla_policy br_vlandb_tinfo_pol[BRIDGE_VLANDB_TINFO_MAX + 1] = {
115 [BRIDGE_VLANDB_TINFO_ID] = { .type = NLA_U32 },
c443758b 116 [BRIDGE_VLANDB_TINFO_CMD] = { .type = NLA_U32 },
fa388f29
NA		 117};
118
569da082
NA		 119static 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{
fa388f29 125 struct nlattr *tun_tb[BRIDGE_VLANDB_TINFO_MAX + 1], *attr;
569da082 126 struct bridge_vlan_info *vinfo;
c443758b
NA		 127 u32 tun_id = 0;
128 int cmd, err;
569da082
NA		 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
fa388f29
NA		 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
c443758b
NA		 145 if (!tun_tb[BRIDGE_VLANDB_TINFO_CMD]) {
146 NL_SET_ERR_MSG_MOD(extack, "Missing tunnel command attribute");
fa388f29
NA		 147 return -ENOENT;
148 }
c443758b
NA		 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);
569da082
NA		 174}
175
a5d29ae2
NA		 176static 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{
a580c76d
NA		 184 int err;
185
a5d29ae2 186 *changed = false;
a580c76d
NA		 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 }
fa388f29 194 if (tb[BRIDGE_VLANDB_ENTRY_TUNNEL_INFO]) {
569da082
NA		 195 err = br_vlan_modify_tunnel(p, v, tb, changed, extack);
196 if (err)
197 return err;
198 }
a580c76d 199
2796d846
NA		 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
a5d29ae2
NA		 212 return 0;
213}
214
215int 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}
47ecd2db 289
743a53d9
NA		 290bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr,
291 const struct net_bridge_vlan *r_end)
292{
9dee572c
NA		 293 return v_curr->vid - r_end->vid == 1 &&
294 ((v_curr->priv_flags ^ r_end->priv_flags) &
df271cd6
NA		 295 BR_VLFLAG_GLOBAL_MCAST_ENABLED) == 0 &&
296 br_multicast_ctx_options_equal(&v_curr->br_mcast_ctx,
297 &r_end->br_mcast_ctx);
743a53d9
NA		 298}
299
300bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
301 const struct net_bridge_vlan *v_opts)
302{
dc002875 303 struct nlattr *nest2 __maybe_unused;
77f6abab 304 u64 clockval __maybe_unused;
743a53d9
NA		 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
9dee572c
NA		 318#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
319 if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING,
df271cd6
NA		 320 !!(v_opts->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED)) ||
321 nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION,
931ba87d
NA		 322 v_opts->br_mcast_ctx.multicast_igmp_version) ||
323 nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT,
50725f6e
NA		 324 v_opts->br_mcast_ctx.multicast_last_member_count) ||
325 nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT,
62938182
NA		 326 v_opts->br_mcast_ctx.multicast_startup_query_count) ||
327 nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER,
a97df080 328 v_opts->br_mcast_ctx.multicast_querier) ||
ddc649d1
NA		 329 br_multicast_dump_querier_state(skb, &v_opts->br_mcast_ctx,
330 BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE))
df271cd6
NA		 331 goto out_err;
332
77f6abab
NA		 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;
2da0aea2
NA		 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;
cd9269d4
NA		 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;
d6c08aba
NA		 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;
42521450
NA		 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;
941121ee
NA		 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;
77f6abab 357
dc002875
NA		 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
df271cd6
NA		 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))
9dee572c 378 goto out_err;
df271cd6 379#endif
9dee572c
NA		 380#endif
381
743a53d9
NA		 382 nla_nest_end(skb, nest);
383
384 return true;
385
386out_err:
387 nla_nest_cancel(skb, nest);
388 return false;
389}
390
05d6f38e 391static size_t rtnl_vlan_global_opts_nlmsg_size(const struct net_bridge_vlan *v)
9aba624d
NA		 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 */
9dee572c
NA		 396#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
397 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING */
df271cd6
NA		 398 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION */
399 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION */
931ba87d 400 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT */
50725f6e 401 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT */
77f6abab 402 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL */
2da0aea2 403 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL */
cd9269d4 404 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL */
d6c08aba 405 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL */
42521450 406 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL */
941121ee 407 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL */
62938182 408 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER */
ddc649d1 409 + br_multicast_querier_state_size() /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE */
05d6f38e
NA		 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 */
9dee572c 412#endif
9aba624d
NA		 413 + nla_total_size(sizeof(u16)); /* BRIDGE_VLANDB_GOPTS_RANGE */
414}
415
416static 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
05d6f38e
NA		 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);
9aba624d
NA		 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
9aba624d
NA		 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
453out_err:
454 rtnl_set_sk_err(dev_net(br->dev), RTNLGRP_BRVLAN, err);
9aba624d
NA		 455 kfree_skb(skb);
456}
457
47ecd2db
NA		 458static 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{
df271cd6
NA		 465 int err __maybe_unused;
466
47ecd2db 467 *changed = false;
9dee572c
NA		 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 }
df271cd6
NA		 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 }
931ba87d
NA		 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 }
50725f6e
NA		 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 }
77f6abab
NA		 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 }
2da0aea2
NA		 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 }
cd9269d4
NA		 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 }
d6c08aba
NA		 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 }
42521450
NA		 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 }
941121ee
NA		 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 }
62938182
NA		 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 }
df271cd6
NA		 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
9dee572c
NA		 561#endif
562
47ecd2db
NA		 563 return 0;
564}
565
566static 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 },
9dee572c 569 [BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING] = { .type = NLA_U8 },
df271cd6 570 [BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION] = { .type = NLA_U8 },
d6c08aba 571 [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
62938182 572 [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER] = { .type = NLA_U8 },
df271cd6 573 [BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
931ba87d 574 [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
50725f6e 575 [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
77f6abab 576 [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
2da0aea2 577 [BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
cd9269d4 578 [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
941121ee 579 [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
42521450 580 [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
47ecd2db
NA		 581};
582
583int 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{
9aba624d 588 struct net_bridge_vlan *v, *curr_start = NULL, *curr_end = NULL;
47ecd2db
NA		 589 struct nlattr *tb[BRIDGE_VLANDB_GOPTS_MAX + 1];
590 struct net_bridge_vlan_group *vg;
47ecd2db
NA		 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;
9aba624d
NA		 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 }
47ecd2db 672 }
9aba624d
NA		 673 if (curr_start)
674 br_vlan_global_opts_notify(br, curr_start->vid, curr_end->vid);
47ecd2db
NA		 675
676 return err;
677}
Linux 6.x block layer and io_uring tree(s)