projects / linux-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
dm: dm-zoned: use __bio_add_page for adding single metadata page
[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
a1aee20d
PM		 51bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v,
52 const struct net_bridge_port *p)
7a53e718 53{
2796d846 54 if (nla_put_u8(skb, BRIDGE_VLANDB_ENTRY_STATE, br_vlan_get_state(v)) ||
83f6d600
IS		 55 !__vlan_tun_put(skb, v) ||
56 nla_put_u8(skb, BRIDGE_VLANDB_ENTRY_NEIGH_SUPPRESS,
57 !!(v->priv_flags & BR_VLFLAG_NEIGH_SUPPRESS_ENABLED)))
2796d846
NA		 58 return false;
59
60#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
61 if (nla_put_u8(skb, BRIDGE_VLANDB_ENTRY_MCAST_ROUTER,
62 br_vlan_multicast_router(v)))
63 return false;
a1aee20d
PM		 64 if (p && !br_multicast_port_ctx_vlan_disabled(&v->port_mcast_ctx) &&
65 (nla_put_u32(skb, BRIDGE_VLANDB_ENTRY_MCAST_N_GROUPS,
66 br_multicast_ngroups_get(&v->port_mcast_ctx)) ||
67 nla_put_u32(skb, BRIDGE_VLANDB_ENTRY_MCAST_MAX_GROUPS,
68 br_multicast_ngroups_get_max(&v->port_mcast_ctx))))
69 return false;
2796d846
NA		 70#endif
71
72 return true;
7a53e718
NA		 73}
74
75size_t br_vlan_opts_nl_size(void)
76{
188c67dd 77 return nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_ENTRY_STATE */
fa388f29 78 + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY_TUNNEL_INFO */
2796d846
NA		 79 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_TINFO_ID */
80#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
81 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_ENTRY_MCAST_ROUTER */
a1aee20d
PM		 82 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_ENTRY_MCAST_N_GROUPS */
83 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_ENTRY_MCAST_MAX_GROUPS */
2796d846 84#endif
83f6d600 85 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_ENTRY_NEIGH_SUPPRESS */
2796d846 86 + 0;
a580c76d
NA		 87}
88
89static int br_vlan_modify_state(struct net_bridge_vlan_group *vg,
90 struct net_bridge_vlan *v,
91 u8 state,
92 bool *changed,
93 struct netlink_ext_ack *extack)
94{
95 struct net_bridge *br;
96
97 ASSERT_RTNL();
98
99 if (state > BR_STATE_BLOCKING) {
100 NL_SET_ERR_MSG_MOD(extack, "Invalid vlan state");
101 return -EINVAL;
102 }
103
104 if (br_vlan_is_brentry(v))
105 br = v->br;
106 else
107 br = v->port->br;
108
109 if (br->stp_enabled == BR_KERNEL_STP) {
110 NL_SET_ERR_MSG_MOD(extack, "Can't modify vlan state when using kernel STP");
111 return -EBUSY;
112 }
113
ec7328b5
TW		 114 if (br_opt_get(br, BROPT_MST_ENABLED)) {
115 NL_SET_ERR_MSG_MOD(extack, "Can't modify vlan state directly when MST is enabled");
116 return -EBUSY;
117 }
118
a580c76d
NA		 119 if (v->state == state)
120 return 0;
121
122 if (v->vid == br_get_pvid(vg))
123 br_vlan_set_pvid_state(vg, state);
124
125 br_vlan_set_state(v, state);
126 *changed = true;
127
7a53e718
NA		 128 return 0;
129}
a5d29ae2 130
fa388f29
NA		 131static const struct nla_policy br_vlandb_tinfo_pol[BRIDGE_VLANDB_TINFO_MAX + 1] = {
132 [BRIDGE_VLANDB_TINFO_ID] = { .type = NLA_U32 },
c443758b 133 [BRIDGE_VLANDB_TINFO_CMD] = { .type = NLA_U32 },
fa388f29
NA		 134};
135
569da082
NA		 136static int br_vlan_modify_tunnel(const struct net_bridge_port *p,
137 struct net_bridge_vlan *v,
138 struct nlattr **tb,
139 bool *changed,
140 struct netlink_ext_ack *extack)
141{
fa388f29 142 struct nlattr *tun_tb[BRIDGE_VLANDB_TINFO_MAX + 1], *attr;
569da082 143 struct bridge_vlan_info *vinfo;
c443758b
NA		 144 u32 tun_id = 0;
145 int cmd, err;
569da082
NA		 146
147 if (!p) {
148 NL_SET_ERR_MSG_MOD(extack, "Can't modify tunnel mapping of non-port vlans");
149 return -EINVAL;
150 }
151 if (!(p->flags & BR_VLAN_TUNNEL)) {
152 NL_SET_ERR_MSG_MOD(extack, "Port doesn't have tunnel flag set");
153 return -EINVAL;
154 }
155
fa388f29
NA		 156 attr = tb[BRIDGE_VLANDB_ENTRY_TUNNEL_INFO];
157 err = nla_parse_nested(tun_tb, BRIDGE_VLANDB_TINFO_MAX, attr,
158 br_vlandb_tinfo_pol, extack);
159 if (err)
160 return err;
161
c443758b
NA		 162 if (!tun_tb[BRIDGE_VLANDB_TINFO_CMD]) {
163 NL_SET_ERR_MSG_MOD(extack, "Missing tunnel command attribute");
fa388f29
NA		 164 return -ENOENT;
165 }
c443758b
NA		 166 cmd = nla_get_u32(tun_tb[BRIDGE_VLANDB_TINFO_CMD]);
167 switch (cmd) {
168 case RTM_SETLINK:
169 if (!tun_tb[BRIDGE_VLANDB_TINFO_ID]) {
170 NL_SET_ERR_MSG_MOD(extack, "Missing tunnel id attribute");
171 return -ENOENT;
172 }
173 /* when working on vlan ranges this is the starting tunnel id */
174 tun_id = nla_get_u32(tun_tb[BRIDGE_VLANDB_TINFO_ID]);
175 /* vlan info attr is guaranteed by br_vlan_rtm_process_one */
176 vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]);
177 /* tunnel ids are mapped to each vlan in increasing order,
178 * the starting vlan is in BRIDGE_VLANDB_ENTRY_INFO and v is the
179 * current vlan, so we compute: tun_id + v - vinfo->vid
180 */
181 tun_id += v->vid - vinfo->vid;
182 break;
183 case RTM_DELLINK:
184 break;
185 default:
186 NL_SET_ERR_MSG_MOD(extack, "Unsupported tunnel command");
187 return -EINVAL;
188 }
189
190 return br_vlan_tunnel_info(p, cmd, v->vid, tun_id, changed);
569da082
NA		 191}
192
a5d29ae2
NA		 193static int br_vlan_process_one_opts(const struct net_bridge *br,
194 const struct net_bridge_port *p,
195 struct net_bridge_vlan_group *vg,
196 struct net_bridge_vlan *v,
197 struct nlattr **tb,
198 bool *changed,
199 struct netlink_ext_ack *extack)
200{
a580c76d
NA		 201 int err;
202
a5d29ae2 203 *changed = false;
a580c76d
NA		 204 if (tb[BRIDGE_VLANDB_ENTRY_STATE]) {
205 u8 state = nla_get_u8(tb[BRIDGE_VLANDB_ENTRY_STATE]);
206
207 err = br_vlan_modify_state(vg, v, state, changed, extack);
208 if (err)
209 return err;
210 }
fa388f29 211 if (tb[BRIDGE_VLANDB_ENTRY_TUNNEL_INFO]) {
569da082
NA		 212 err = br_vlan_modify_tunnel(p, v, tb, changed, extack);
213 if (err)
214 return err;
215 }
a580c76d 216
2796d846
NA		 217#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
218 if (tb[BRIDGE_VLANDB_ENTRY_MCAST_ROUTER]) {
219 u8 val;
220
221 val = nla_get_u8(tb[BRIDGE_VLANDB_ENTRY_MCAST_ROUTER]);
222 err = br_multicast_set_vlan_router(v, val);
223 if (err)
224 return err;
225 *changed = true;
226 }
a1aee20d
PM		 227 if (tb[BRIDGE_VLANDB_ENTRY_MCAST_MAX_GROUPS]) {
228 u32 val;
229
230 if (!p) {
231 NL_SET_ERR_MSG_MOD(extack, "Can't set mcast_max_groups for non-port vlans");
232 return -EINVAL;
233 }
234 if (br_multicast_port_ctx_vlan_disabled(&v->port_mcast_ctx)) {
235 NL_SET_ERR_MSG_MOD(extack, "Multicast snooping disabled on this VLAN");
236 return -EINVAL;
237 }
238
239 val = nla_get_u32(tb[BRIDGE_VLANDB_ENTRY_MCAST_MAX_GROUPS]);
240 br_multicast_ngroups_set_max(&v->port_mcast_ctx, val);
241 *changed = true;
242 }
2796d846
NA		 243#endif
244
83f6d600
IS		 245 if (tb[BRIDGE_VLANDB_ENTRY_NEIGH_SUPPRESS]) {
246 bool enabled = v->priv_flags & BR_VLFLAG_NEIGH_SUPPRESS_ENABLED;
247 bool val = nla_get_u8(tb[BRIDGE_VLANDB_ENTRY_NEIGH_SUPPRESS]);
248
249 if (!p) {
250 NL_SET_ERR_MSG_MOD(extack, "Can't set neigh_suppress for non-port vlans");
251 return -EINVAL;
252 }
253
254 if (val != enabled) {
255 v->priv_flags ^= BR_VLFLAG_NEIGH_SUPPRESS_ENABLED;
256 *changed = true;
257 }
258 }
259
a5d29ae2
NA		 260 return 0;
261}
262
263int br_vlan_process_options(const struct net_bridge *br,
264 const struct net_bridge_port *p,
265 struct net_bridge_vlan *range_start,
266 struct net_bridge_vlan *range_end,
267 struct nlattr **tb,
268 struct netlink_ext_ack *extack)
269{
270 struct net_bridge_vlan *v, *curr_start = NULL, *curr_end = NULL;
271 struct net_bridge_vlan_group *vg;
272 int vid, err = 0;
273 u16 pvid;
274
275 if (p)
276 vg = nbp_vlan_group(p);
277 else
278 vg = br_vlan_group(br);
279
280 if (!range_start || !br_vlan_should_use(range_start)) {
281 NL_SET_ERR_MSG_MOD(extack, "Vlan range start doesn't exist, can't process options");
282 return -ENOENT;
283 }
284 if (!range_end || !br_vlan_should_use(range_end)) {
285 NL_SET_ERR_MSG_MOD(extack, "Vlan range end doesn't exist, can't process options");
286 return -ENOENT;
287 }
288
289 pvid = br_get_pvid(vg);
290 for (vid = range_start->vid; vid <= range_end->vid; vid++) {
291 bool changed = false;
292
293 v = br_vlan_find(vg, vid);
294 if (!v || !br_vlan_should_use(v)) {
295 NL_SET_ERR_MSG_MOD(extack, "Vlan in range doesn't exist, can't process options");
296 err = -ENOENT;
297 break;
298 }
299
300 err = br_vlan_process_one_opts(br, p, vg, v, tb, &changed,
301 extack);
302 if (err)
303 break;
304
305 if (changed) {
306 /* vlan options changed, check for range */
307 if (!curr_start) {
308 curr_start = v;
309 curr_end = v;
310 continue;
311 }
312
313 if (v->vid == pvid ||
314 !br_vlan_can_enter_range(v, curr_end)) {
315 br_vlan_notify(br, p, curr_start->vid,
316 curr_end->vid, RTM_NEWVLAN);
317 curr_start = v;
318 }
319 curr_end = v;
320 } else {
321 /* nothing changed and nothing to notify yet */
322 if (!curr_start)
323 continue;
324
325 br_vlan_notify(br, p, curr_start->vid, curr_end->vid,
326 RTM_NEWVLAN);
327 curr_start = NULL;
328 curr_end = NULL;
329 }
330 }
331 if (curr_start)
332 br_vlan_notify(br, p, curr_start->vid, curr_end->vid,
333 RTM_NEWVLAN);
334
335 return err;
336}
47ecd2db 337
743a53d9
NA		 338bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr,
339 const struct net_bridge_vlan *r_end)
340{
9dee572c 341 return v_curr->vid - r_end->vid == 1 &&
8c678d60 342 v_curr->msti == r_end->msti &&
9dee572c 343 ((v_curr->priv_flags ^ r_end->priv_flags) &
df271cd6
NA		 344 BR_VLFLAG_GLOBAL_MCAST_ENABLED) == 0 &&
345 br_multicast_ctx_options_equal(&v_curr->br_mcast_ctx,
346 &r_end->br_mcast_ctx);
743a53d9
NA		 347}
348
349bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
350 const struct net_bridge_vlan *v_opts)
351{
dc002875 352 struct nlattr *nest2 __maybe_unused;
77f6abab 353 u64 clockval __maybe_unused;
743a53d9
NA		 354 struct nlattr *nest;
355
356 nest = nla_nest_start(skb, BRIDGE_VLANDB_GLOBAL_OPTIONS);
357 if (!nest)
358 return false;
359
360 if (nla_put_u16(skb, BRIDGE_VLANDB_GOPTS_ID, vid))
361 goto out_err;
362
363 if (vid_range && vid < vid_range &&
364 nla_put_u16(skb, BRIDGE_VLANDB_GOPTS_RANGE, vid_range))
365 goto out_err;
366
9dee572c
NA		 367#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
368 if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING,
df271cd6
NA		 369 !!(v_opts->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED)) ||
370 nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION,
931ba87d
NA		 371 v_opts->br_mcast_ctx.multicast_igmp_version) ||
372 nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT,
50725f6e
NA		 373 v_opts->br_mcast_ctx.multicast_last_member_count) ||
374 nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT,
62938182
NA		 375 v_opts->br_mcast_ctx.multicast_startup_query_count) ||
376 nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER,
a97df080 377 v_opts->br_mcast_ctx.multicast_querier) ||
ddc649d1
NA		 378 br_multicast_dump_querier_state(skb, &v_opts->br_mcast_ctx,
379 BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE))
df271cd6
NA		 380 goto out_err;
381
77f6abab
NA		 382 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_last_member_interval);
383 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL,
384 clockval, BRIDGE_VLANDB_GOPTS_PAD))
385 goto out_err;
2da0aea2
NA		 386 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_membership_interval);
387 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL,
388 clockval, BRIDGE_VLANDB_GOPTS_PAD))
389 goto out_err;
cd9269d4
NA		 390 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_querier_interval);
391 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL,
392 clockval, BRIDGE_VLANDB_GOPTS_PAD))
393 goto out_err;
d6c08aba
NA		 394 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_query_interval);
395 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL,
396 clockval, BRIDGE_VLANDB_GOPTS_PAD))
397 goto out_err;
42521450
NA		 398 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_query_response_interval);
399 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL,
400 clockval, BRIDGE_VLANDB_GOPTS_PAD))
401 goto out_err;
941121ee
NA		 402 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_startup_query_interval);
403 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL,
404 clockval, BRIDGE_VLANDB_GOPTS_PAD))
405 goto out_err;
77f6abab 406
dc002875
NA		 407 if (br_rports_have_mc_router(&v_opts->br_mcast_ctx)) {
408 nest2 = nla_nest_start(skb,
409 BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS);
410 if (!nest2)
411 goto out_err;
412
413 rcu_read_lock();
414 if (br_rports_fill_info(skb, &v_opts->br_mcast_ctx)) {
415 rcu_read_unlock();
416 nla_nest_cancel(skb, nest2);
417 goto out_err;
418 }
419 rcu_read_unlock();
420
421 nla_nest_end(skb, nest2);
422 }
423
df271cd6
NA		 424#if IS_ENABLED(CONFIG_IPV6)
425 if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION,
426 v_opts->br_mcast_ctx.multicast_mld_version))
9dee572c 427 goto out_err;
df271cd6 428#endif
9dee572c
NA		 429#endif
430
8c678d60
TW		 431 if (nla_put_u16(skb, BRIDGE_VLANDB_GOPTS_MSTI, v_opts->msti))
432 goto out_err;
433
743a53d9
NA		 434 nla_nest_end(skb, nest);
435
436 return true;
437
438out_err:
439 nla_nest_cancel(skb, nest);
440 return false;
441}
442
05d6f38e 443static size_t rtnl_vlan_global_opts_nlmsg_size(const struct net_bridge_vlan *v)
9aba624d
NA		 444{
445 return NLMSG_ALIGN(sizeof(struct br_vlan_msg))
446 + nla_total_size(0) /* BRIDGE_VLANDB_GLOBAL_OPTIONS */
447 + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_GOPTS_ID */
9dee572c
NA		 448#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
449 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING */
df271cd6
NA		 450 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION */
451 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION */
931ba87d 452 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT */
50725f6e 453 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT */
77f6abab 454 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL */
2da0aea2 455 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL */
cd9269d4 456 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL */
d6c08aba 457 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL */
42521450 458 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL */
941121ee 459 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL */
62938182 460 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER */
ddc649d1 461 + br_multicast_querier_state_size() /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE */
05d6f38e
NA		 462 + nla_total_size(0) /* BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS */
463 + br_rports_size(&v->br_mcast_ctx) /* BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS */
9dee572c 464#endif
8c678d60 465 + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_GOPTS_MSTI */
9aba624d
NA		 466 + nla_total_size(sizeof(u16)); /* BRIDGE_VLANDB_GOPTS_RANGE */
467}
468
469static void br_vlan_global_opts_notify(const struct net_bridge *br,
470 u16 vid, u16 vid_range)
471{
472 struct net_bridge_vlan *v;
473 struct br_vlan_msg *bvm;
474 struct nlmsghdr *nlh;
475 struct sk_buff *skb;
476 int err = -ENOBUFS;
477
478 /* right now notifications are done only with rtnl held */
479 ASSERT_RTNL();
480
05d6f38e
NA		 481 /* need to find the vlan due to flags/options */
482 v = br_vlan_find(br_vlan_group(br), vid);
483 if (!v)
484 return;
485
486 skb = nlmsg_new(rtnl_vlan_global_opts_nlmsg_size(v), GFP_KERNEL);
9aba624d
NA		 487 if (!skb)
488 goto out_err;
489
490 err = -EMSGSIZE;
491 nlh = nlmsg_put(skb, 0, 0, RTM_NEWVLAN, sizeof(*bvm), 0);
492 if (!nlh)
493 goto out_err;
494 bvm = nlmsg_data(nlh);
495 memset(bvm, 0, sizeof(*bvm));
496 bvm->family = AF_BRIDGE;
497 bvm->ifindex = br->dev->ifindex;
498
9aba624d
NA		 499 if (!br_vlan_global_opts_fill(skb, vid, vid_range, v))
500 goto out_err;
501
502 nlmsg_end(skb, nlh);
503 rtnl_notify(skb, dev_net(br->dev), 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL);
504 return;
505
506out_err:
507 rtnl_set_sk_err(dev_net(br->dev), RTNLGRP_BRVLAN, err);
9aba624d
NA		 508 kfree_skb(skb);
509}
510
47ecd2db
NA		 511static int br_vlan_process_global_one_opts(const struct net_bridge *br,
512 struct net_bridge_vlan_group *vg,
513 struct net_bridge_vlan *v,
514 struct nlattr **tb,
515 bool *changed,
516 struct netlink_ext_ack *extack)
517{
df271cd6
NA		 518 int err __maybe_unused;
519
47ecd2db 520 *changed = false;
9dee572c
NA		 521#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
522 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]) {
523 u8 mc_snooping;
524
525 mc_snooping = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]);
526 if (br_multicast_toggle_global_vlan(v, !!mc_snooping))
527 *changed = true;
528 }
df271cd6
NA		 529 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]) {
530 u8 ver;
531
532 ver = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]);
533 err = br_multicast_set_igmp_version(&v->br_mcast_ctx, ver);
534 if (err)
535 return err;
536 *changed = true;
537 }
931ba87d
NA		 538 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]) {
539 u32 cnt;
540
541 cnt = nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]);
542 v->br_mcast_ctx.multicast_last_member_count = cnt;
543 *changed = true;
544 }
50725f6e
NA		 545 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]) {
546 u32 cnt;
547
548 cnt = nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]);
549 v->br_mcast_ctx.multicast_startup_query_count = cnt;
550 *changed = true;
551 }
77f6abab
NA		 552 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]) {
553 u64 val;
554
555 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]);
556 v->br_mcast_ctx.multicast_last_member_interval = clock_t_to_jiffies(val);
557 *changed = true;
558 }
2da0aea2
NA		 559 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]) {
560 u64 val;
561
562 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]);
563 v->br_mcast_ctx.multicast_membership_interval = clock_t_to_jiffies(val);
564 *changed = true;
565 }
cd9269d4
NA		 566 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]) {
567 u64 val;
568
569 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]);
570 v->br_mcast_ctx.multicast_querier_interval = clock_t_to_jiffies(val);
571 *changed = true;
572 }
d6c08aba
NA		 573 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]) {
574 u64 val;
575
576 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]);
99b40610 577 br_multicast_set_query_intvl(&v->br_mcast_ctx, val);
d6c08aba
NA		 578 *changed = true;
579 }
42521450
NA		 580 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]) {
581 u64 val;
582
583 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]);
584 v->br_mcast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val);
585 *changed = true;
586 }
941121ee
NA		 587 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]) {
588 u64 val;
589
590 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]);
f83a112b 591 br_multicast_set_startup_query_intvl(&v->br_mcast_ctx, val);
941121ee
NA		 592 *changed = true;
593 }
62938182
NA		 594 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER]) {
595 u8 val;
596
597 val = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER]);
598 err = br_multicast_set_querier(&v->br_mcast_ctx, val);
599 if (err)
600 return err;
601 *changed = true;
602 }
df271cd6
NA		 603#if IS_ENABLED(CONFIG_IPV6)
604 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]) {
605 u8 ver;
606
607 ver = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]);
608 err = br_multicast_set_mld_version(&v->br_mcast_ctx, ver);
609 if (err)
610 return err;
611 *changed = true;
612 }
613#endif
9dee572c 614#endif
8c678d60
TW		 615 if (tb[BRIDGE_VLANDB_GOPTS_MSTI]) {
616 u16 msti;
617
618 msti = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_MSTI]);
619 err = br_mst_vlan_set_msti(v, msti);
620 if (err)
621 return err;
622 *changed = true;
623 }
9dee572c 624
47ecd2db
NA		 625 return 0;
626}
627
628static const struct nla_policy br_vlan_db_gpol[BRIDGE_VLANDB_GOPTS_MAX + 1] = {
629 [BRIDGE_VLANDB_GOPTS_ID] = { .type = NLA_U16 },
630 [BRIDGE_VLANDB_GOPTS_RANGE] = { .type = NLA_U16 },
9dee572c 631 [BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING] = { .type = NLA_U8 },
df271cd6 632 [BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION] = { .type = NLA_U8 },
d6c08aba 633 [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
62938182 634 [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER] = { .type = NLA_U8 },
df271cd6 635 [BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
931ba87d 636 [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
50725f6e 637 [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
77f6abab 638 [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
2da0aea2 639 [BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
cd9269d4 640 [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
941121ee 641 [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
42521450 642 [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
8c678d60 643 [BRIDGE_VLANDB_GOPTS_MSTI] = NLA_POLICY_MAX(NLA_U16, VLAN_N_VID - 1),
47ecd2db
NA		 644};
645
646int br_vlan_rtm_process_global_options(struct net_device *dev,
647 const struct nlattr *attr,
648 int cmd,
649 struct netlink_ext_ack *extack)
650{
9aba624d 651 struct net_bridge_vlan *v, *curr_start = NULL, *curr_end = NULL;
47ecd2db
NA		 652 struct nlattr *tb[BRIDGE_VLANDB_GOPTS_MAX + 1];
653 struct net_bridge_vlan_group *vg;
47ecd2db
NA		 654 u16 vid, vid_range = 0;
655 struct net_bridge *br;
656 int err = 0;
657
658 if (cmd != RTM_NEWVLAN) {
659 NL_SET_ERR_MSG_MOD(extack, "Global vlan options support only set operation");
660 return -EINVAL;
661 }
662 if (!netif_is_bridge_master(dev)) {
663 NL_SET_ERR_MSG_MOD(extack, "Global vlan options can only be set on bridge device");
664 return -EINVAL;
665 }
666 br = netdev_priv(dev);
667 vg = br_vlan_group(br);
668 if (WARN_ON(!vg))
669 return -ENODEV;
670
671 err = nla_parse_nested(tb, BRIDGE_VLANDB_GOPTS_MAX, attr,
672 br_vlan_db_gpol, extack);
673 if (err)
674 return err;
675
676 if (!tb[BRIDGE_VLANDB_GOPTS_ID]) {
677 NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry id");
678 return -EINVAL;
679 }
680 vid = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_ID]);
681 if (!br_vlan_valid_id(vid, extack))
682 return -EINVAL;
683
684 if (tb[BRIDGE_VLANDB_GOPTS_RANGE]) {
685 vid_range = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_RANGE]);
686 if (!br_vlan_valid_id(vid_range, extack))
687 return -EINVAL;
688 if (vid >= vid_range) {
689 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
690 return -EINVAL;
691 }
692 } else {
693 vid_range = vid;
694 }
695
696 for (; vid <= vid_range; vid++) {
697 bool changed = false;
698
699 v = br_vlan_find(vg, vid);
700 if (!v) {
701 NL_SET_ERR_MSG_MOD(extack, "Vlan in range doesn't exist, can't process global options");
702 err = -ENOENT;
703 break;
704 }
705
706 err = br_vlan_process_global_one_opts(br, vg, v, tb, &changed,
707 extack);
708 if (err)
709 break;
9aba624d
NA		 710
711 if (changed) {
712 /* vlan options changed, check for range */
713 if (!curr_start) {
714 curr_start = v;
715 curr_end = v;
716 continue;
717 }
718
719 if (!br_vlan_global_opts_can_enter_range(v, curr_end)) {
720 br_vlan_global_opts_notify(br, curr_start->vid,
721 curr_end->vid);
722 curr_start = v;
723 }
724 curr_end = v;
725 } else {
726 /* nothing changed and nothing to notify yet */
727 if (!curr_start)
728 continue;
729
730 br_vlan_global_opts_notify(br, curr_start->vid,
731 curr_end->vid);
732 curr_start = NULL;
733 curr_end = NULL;
734 }
47ecd2db 735 }
9aba624d
NA		 736 if (curr_start)
737 br_vlan_global_opts_notify(br, curr_start->vid, curr_end->vid);
47ecd2db
NA		 738
739 return err;
740}
Linux 6.x block layer and io_uring tree(s)