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
__vlan_tun_put(struct sk_buff * skb,const struct net_bridge_vlan * v)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
__vlan_tun_can_enter_range(const struct net_bridge_vlan * v_curr,const struct net_bridge_vlan * range_end)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 */
br_vlan_opts_eq_range(const struct net_bridge_vlan * v_curr,const struct net_bridge_vlan * range_end)40 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
41 const struct net_bridge_vlan *range_end)
42 {
43 u8 range_mc_rtr = br_vlan_multicast_router(range_end);
44 u8 curr_mc_rtr = br_vlan_multicast_router(v_curr);
45
46 return v_curr->state == range_end->state &&
47 __vlan_tun_can_enter_range(v_curr, range_end) &&
48 curr_mc_rtr == range_mc_rtr;
49 }
50
br_vlan_opts_fill(struct sk_buff * skb,const struct net_bridge_vlan * v)51 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v)
52 {
53 if (nla_put_u8(skb, BRIDGE_VLANDB_ENTRY_STATE, br_vlan_get_state(v)) ||
54 !__vlan_tun_put(skb, v))
55 return false;
56
57 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
58 if (nla_put_u8(skb, BRIDGE_VLANDB_ENTRY_MCAST_ROUTER,
59 br_vlan_multicast_router(v)))
60 return false;
61 #endif
62
63 return true;
64 }
65
br_vlan_opts_nl_size(void)66 size_t br_vlan_opts_nl_size(void)
67 {
68 return nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_ENTRY_STATE */
69 + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY_TUNNEL_INFO */
70 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_TINFO_ID */
71 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
72 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_ENTRY_MCAST_ROUTER */
73 #endif
74 + 0;
75 }
76
br_vlan_modify_state(struct net_bridge_vlan_group * vg,struct net_bridge_vlan * v,u8 state,bool * changed,struct netlink_ext_ack * extack)77 static int br_vlan_modify_state(struct net_bridge_vlan_group *vg,
78 struct net_bridge_vlan *v,
79 u8 state,
80 bool *changed,
81 struct netlink_ext_ack *extack)
82 {
83 struct net_bridge *br;
84
85 ASSERT_RTNL();
86
87 if (state > BR_STATE_BLOCKING) {
88 NL_SET_ERR_MSG_MOD(extack, "Invalid vlan state");
89 return -EINVAL;
90 }
91
92 if (br_vlan_is_brentry(v))
93 br = v->br;
94 else
95 br = v->port->br;
96
97 if (br->stp_enabled == BR_KERNEL_STP) {
98 NL_SET_ERR_MSG_MOD(extack, "Can't modify vlan state when using kernel STP");
99 return -EBUSY;
100 }
101
102 if (v->state == state)
103 return 0;
104
105 if (v->vid == br_get_pvid(vg))
106 br_vlan_set_pvid_state(vg, state);
107
108 br_vlan_set_state(v, state);
109 *changed = true;
110
111 return 0;
112 }
113
114 static const struct nla_policy br_vlandb_tinfo_pol[BRIDGE_VLANDB_TINFO_MAX + 1] = {
115 [BRIDGE_VLANDB_TINFO_ID] = { .type = NLA_U32 },
116 [BRIDGE_VLANDB_TINFO_CMD] = { .type = NLA_U32 },
117 };
118
br_vlan_modify_tunnel(const struct net_bridge_port * p,struct net_bridge_vlan * v,struct nlattr ** tb,bool * changed,struct netlink_ext_ack * extack)119 static int br_vlan_modify_tunnel(const struct net_bridge_port *p,
120 struct net_bridge_vlan *v,
121 struct nlattr **tb,
122 bool *changed,
123 struct netlink_ext_ack *extack)
124 {
125 struct nlattr *tun_tb[BRIDGE_VLANDB_TINFO_MAX + 1], *attr;
126 struct bridge_vlan_info *vinfo;
127 u32 tun_id = 0;
128 int cmd, err;
129
130 if (!p) {
131 NL_SET_ERR_MSG_MOD(extack, "Can't modify tunnel mapping of non-port vlans");
132 return -EINVAL;
133 }
134 if (!(p->flags & BR_VLAN_TUNNEL)) {
135 NL_SET_ERR_MSG_MOD(extack, "Port doesn't have tunnel flag set");
136 return -EINVAL;
137 }
138
139 attr = tb[BRIDGE_VLANDB_ENTRY_TUNNEL_INFO];
140 err = nla_parse_nested(tun_tb, BRIDGE_VLANDB_TINFO_MAX, attr,
141 br_vlandb_tinfo_pol, extack);
142 if (err)
143 return err;
144
145 if (!tun_tb[BRIDGE_VLANDB_TINFO_CMD]) {
146 NL_SET_ERR_MSG_MOD(extack, "Missing tunnel command attribute");
147 return -ENOENT;
148 }
149 cmd = nla_get_u32(tun_tb[BRIDGE_VLANDB_TINFO_CMD]);
150 switch (cmd) {
151 case RTM_SETLINK:
152 if (!tun_tb[BRIDGE_VLANDB_TINFO_ID]) {
153 NL_SET_ERR_MSG_MOD(extack, "Missing tunnel id attribute");
154 return -ENOENT;
155 }
156 /* when working on vlan ranges this is the starting tunnel id */
157 tun_id = nla_get_u32(tun_tb[BRIDGE_VLANDB_TINFO_ID]);
158 /* vlan info attr is guaranteed by br_vlan_rtm_process_one */
159 vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]);
160 /* tunnel ids are mapped to each vlan in increasing order,
161 * the starting vlan is in BRIDGE_VLANDB_ENTRY_INFO and v is the
162 * current vlan, so we compute: tun_id + v - vinfo->vid
163 */
164 tun_id += v->vid - vinfo->vid;
165 break;
166 case RTM_DELLINK:
167 break;
168 default:
169 NL_SET_ERR_MSG_MOD(extack, "Unsupported tunnel command");
170 return -EINVAL;
171 }
172
173 return br_vlan_tunnel_info(p, cmd, v->vid, tun_id, changed);
174 }
175
br_vlan_process_one_opts(const struct net_bridge * br,const struct net_bridge_port * p,struct net_bridge_vlan_group * vg,struct net_bridge_vlan * v,struct nlattr ** tb,bool * changed,struct netlink_ext_ack * extack)176 static int br_vlan_process_one_opts(const struct net_bridge *br,
177 const struct net_bridge_port *p,
178 struct net_bridge_vlan_group *vg,
179 struct net_bridge_vlan *v,
180 struct nlattr **tb,
181 bool *changed,
182 struct netlink_ext_ack *extack)
183 {
184 int err;
185
186 *changed = false;
187 if (tb[BRIDGE_VLANDB_ENTRY_STATE]) {
188 u8 state = nla_get_u8(tb[BRIDGE_VLANDB_ENTRY_STATE]);
189
190 err = br_vlan_modify_state(vg, v, state, changed, extack);
191 if (err)
192 return err;
193 }
194 if (tb[BRIDGE_VLANDB_ENTRY_TUNNEL_INFO]) {
195 err = br_vlan_modify_tunnel(p, v, tb, changed, extack);
196 if (err)
197 return err;
198 }
199
200 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
201 if (tb[BRIDGE_VLANDB_ENTRY_MCAST_ROUTER]) {
202 u8 val;
203
204 val = nla_get_u8(tb[BRIDGE_VLANDB_ENTRY_MCAST_ROUTER]);
205 err = br_multicast_set_vlan_router(v, val);
206 if (err)
207 return err;
208 *changed = true;
209 }
210 #endif
211
212 return 0;
213 }
214
br_vlan_process_options(const struct net_bridge * br,const struct net_bridge_port * p,struct net_bridge_vlan * range_start,struct net_bridge_vlan * range_end,struct nlattr ** tb,struct netlink_ext_ack * extack)215 int br_vlan_process_options(const struct net_bridge *br,
216 const struct net_bridge_port *p,
217 struct net_bridge_vlan *range_start,
218 struct net_bridge_vlan *range_end,
219 struct nlattr **tb,
220 struct netlink_ext_ack *extack)
221 {
222 struct net_bridge_vlan *v, *curr_start = NULL, *curr_end = NULL;
223 struct net_bridge_vlan_group *vg;
224 int vid, err = 0;
225 u16 pvid;
226
227 if (p)
228 vg = nbp_vlan_group(p);
229 else
230 vg = br_vlan_group(br);
231
232 if (!range_start || !br_vlan_should_use(range_start)) {
233 NL_SET_ERR_MSG_MOD(extack, "Vlan range start doesn't exist, can't process options");
234 return -ENOENT;
235 }
236 if (!range_end || !br_vlan_should_use(range_end)) {
237 NL_SET_ERR_MSG_MOD(extack, "Vlan range end doesn't exist, can't process options");
238 return -ENOENT;
239 }
240
241 pvid = br_get_pvid(vg);
242 for (vid = range_start->vid; vid <= range_end->vid; vid++) {
243 bool changed = false;
244
245 v = br_vlan_find(vg, vid);
246 if (!v || !br_vlan_should_use(v)) {
247 NL_SET_ERR_MSG_MOD(extack, "Vlan in range doesn't exist, can't process options");
248 err = -ENOENT;
249 break;
250 }
251
252 err = br_vlan_process_one_opts(br, p, vg, v, tb, &changed,
253 extack);
254 if (err)
255 break;
256
257 if (changed) {
258 /* vlan options changed, check for range */
259 if (!curr_start) {
260 curr_start = v;
261 curr_end = v;
262 continue;
263 }
264
265 if (v->vid == pvid ||
266 !br_vlan_can_enter_range(v, curr_end)) {
267 br_vlan_notify(br, p, curr_start->vid,
268 curr_end->vid, RTM_NEWVLAN);
269 curr_start = v;
270 }
271 curr_end = v;
272 } else {
273 /* nothing changed and nothing to notify yet */
274 if (!curr_start)
275 continue;
276
277 br_vlan_notify(br, p, curr_start->vid, curr_end->vid,
278 RTM_NEWVLAN);
279 curr_start = NULL;
280 curr_end = NULL;
281 }
282 }
283 if (curr_start)
284 br_vlan_notify(br, p, curr_start->vid, curr_end->vid,
285 RTM_NEWVLAN);
286
287 return err;
288 }
289
br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan * v_curr,const struct net_bridge_vlan * r_end)290 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr,
291 const struct net_bridge_vlan *r_end)
292 {
293 return v_curr->vid - r_end->vid == 1 &&
294 ((v_curr->priv_flags ^ r_end->priv_flags) &
295 BR_VLFLAG_GLOBAL_MCAST_ENABLED) == 0 &&
296 br_multicast_ctx_options_equal(&v_curr->br_mcast_ctx,
297 &r_end->br_mcast_ctx);
298 }
299
br_vlan_global_opts_fill(struct sk_buff * skb,u16 vid,u16 vid_range,const struct net_bridge_vlan * v_opts)300 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
301 const struct net_bridge_vlan *v_opts)
302 {
303 struct nlattr *nest2 __maybe_unused;
304 u64 clockval __maybe_unused;
305 struct nlattr *nest;
306
307 nest = nla_nest_start(skb, BRIDGE_VLANDB_GLOBAL_OPTIONS);
308 if (!nest)
309 return false;
310
311 if (nla_put_u16(skb, BRIDGE_VLANDB_GOPTS_ID, vid))
312 goto out_err;
313
314 if (vid_range && vid < vid_range &&
315 nla_put_u16(skb, BRIDGE_VLANDB_GOPTS_RANGE, vid_range))
316 goto out_err;
317
318 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
319 if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING,
320 !!(v_opts->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED)) ||
321 nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION,
322 v_opts->br_mcast_ctx.multicast_igmp_version) ||
323 nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT,
324 v_opts->br_mcast_ctx.multicast_last_member_count) ||
325 nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT,
326 v_opts->br_mcast_ctx.multicast_startup_query_count) ||
327 nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER,
328 v_opts->br_mcast_ctx.multicast_querier) ||
329 br_multicast_dump_querier_state(skb, &v_opts->br_mcast_ctx,
330 BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE))
331 goto out_err;
332
333 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_last_member_interval);
334 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL,
335 clockval, BRIDGE_VLANDB_GOPTS_PAD))
336 goto out_err;
337 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_membership_interval);
338 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL,
339 clockval, BRIDGE_VLANDB_GOPTS_PAD))
340 goto out_err;
341 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_querier_interval);
342 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL,
343 clockval, BRIDGE_VLANDB_GOPTS_PAD))
344 goto out_err;
345 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_query_interval);
346 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL,
347 clockval, BRIDGE_VLANDB_GOPTS_PAD))
348 goto out_err;
349 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_query_response_interval);
350 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL,
351 clockval, BRIDGE_VLANDB_GOPTS_PAD))
352 goto out_err;
353 clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_startup_query_interval);
354 if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL,
355 clockval, BRIDGE_VLANDB_GOPTS_PAD))
356 goto out_err;
357
358 if (br_rports_have_mc_router(&v_opts->br_mcast_ctx)) {
359 nest2 = nla_nest_start(skb,
360 BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS);
361 if (!nest2)
362 goto out_err;
363
364 rcu_read_lock();
365 if (br_rports_fill_info(skb, &v_opts->br_mcast_ctx)) {
366 rcu_read_unlock();
367 nla_nest_cancel(skb, nest2);
368 goto out_err;
369 }
370 rcu_read_unlock();
371
372 nla_nest_end(skb, nest2);
373 }
374
375 #if IS_ENABLED(CONFIG_IPV6)
376 if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION,
377 v_opts->br_mcast_ctx.multicast_mld_version))
378 goto out_err;
379 #endif
380 #endif
381
382 nla_nest_end(skb, nest);
383
384 return true;
385
386 out_err:
387 nla_nest_cancel(skb, nest);
388 return false;
389 }
390
rtnl_vlan_global_opts_nlmsg_size(const struct net_bridge_vlan * v)391 static size_t rtnl_vlan_global_opts_nlmsg_size(const struct net_bridge_vlan *v)
392 {
393 return NLMSG_ALIGN(sizeof(struct br_vlan_msg))
394 + nla_total_size(0) /* BRIDGE_VLANDB_GLOBAL_OPTIONS */
395 + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_GOPTS_ID */
396 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
397 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING */
398 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION */
399 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION */
400 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT */
401 + nla_total_size(sizeof(u32)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT */
402 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL */
403 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL */
404 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL */
405 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL */
406 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL */
407 + nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL */
408 + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER */
409 + br_multicast_querier_state_size() /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE */
410 + nla_total_size(0) /* BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS */
411 + br_rports_size(&v->br_mcast_ctx) /* BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS */
412 #endif
413 + nla_total_size(sizeof(u16)); /* BRIDGE_VLANDB_GOPTS_RANGE */
414 }
415
br_vlan_global_opts_notify(const struct net_bridge * br,u16 vid,u16 vid_range)416 static void br_vlan_global_opts_notify(const struct net_bridge *br,
417 u16 vid, u16 vid_range)
418 {
419 struct net_bridge_vlan *v;
420 struct br_vlan_msg *bvm;
421 struct nlmsghdr *nlh;
422 struct sk_buff *skb;
423 int err = -ENOBUFS;
424
425 /* right now notifications are done only with rtnl held */
426 ASSERT_RTNL();
427
428 /* need to find the vlan due to flags/options */
429 v = br_vlan_find(br_vlan_group(br), vid);
430 if (!v)
431 return;
432
433 skb = nlmsg_new(rtnl_vlan_global_opts_nlmsg_size(v), GFP_KERNEL);
434 if (!skb)
435 goto out_err;
436
437 err = -EMSGSIZE;
438 nlh = nlmsg_put(skb, 0, 0, RTM_NEWVLAN, sizeof(*bvm), 0);
439 if (!nlh)
440 goto out_err;
441 bvm = nlmsg_data(nlh);
442 memset(bvm, 0, sizeof(*bvm));
443 bvm->family = AF_BRIDGE;
444 bvm->ifindex = br->dev->ifindex;
445
446 if (!br_vlan_global_opts_fill(skb, vid, vid_range, v))
447 goto out_err;
448
449 nlmsg_end(skb, nlh);
450 rtnl_notify(skb, dev_net(br->dev), 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL);
451 return;
452
453 out_err:
454 rtnl_set_sk_err(dev_net(br->dev), RTNLGRP_BRVLAN, err);
455 kfree_skb(skb);
456 }
457
br_vlan_process_global_one_opts(const struct net_bridge * br,struct net_bridge_vlan_group * vg,struct net_bridge_vlan * v,struct nlattr ** tb,bool * changed,struct netlink_ext_ack * extack)458 static int br_vlan_process_global_one_opts(const struct net_bridge *br,
459 struct net_bridge_vlan_group *vg,
460 struct net_bridge_vlan *v,
461 struct nlattr **tb,
462 bool *changed,
463 struct netlink_ext_ack *extack)
464 {
465 int err __maybe_unused;
466
467 *changed = false;
468 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
469 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]) {
470 u8 mc_snooping;
471
472 mc_snooping = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING]);
473 if (br_multicast_toggle_global_vlan(v, !!mc_snooping))
474 *changed = true;
475 }
476 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]) {
477 u8 ver;
478
479 ver = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]);
480 err = br_multicast_set_igmp_version(&v->br_mcast_ctx, ver);
481 if (err)
482 return err;
483 *changed = true;
484 }
485 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]) {
486 u32 cnt;
487
488 cnt = nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]);
489 v->br_mcast_ctx.multicast_last_member_count = cnt;
490 *changed = true;
491 }
492 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]) {
493 u32 cnt;
494
495 cnt = nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]);
496 v->br_mcast_ctx.multicast_startup_query_count = cnt;
497 *changed = true;
498 }
499 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]) {
500 u64 val;
501
502 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL]);
503 v->br_mcast_ctx.multicast_last_member_interval = clock_t_to_jiffies(val);
504 *changed = true;
505 }
506 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]) {
507 u64 val;
508
509 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL]);
510 v->br_mcast_ctx.multicast_membership_interval = clock_t_to_jiffies(val);
511 *changed = true;
512 }
513 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]) {
514 u64 val;
515
516 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL]);
517 v->br_mcast_ctx.multicast_querier_interval = clock_t_to_jiffies(val);
518 *changed = true;
519 }
520 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]) {
521 u64 val;
522
523 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]);
524 v->br_mcast_ctx.multicast_query_interval = clock_t_to_jiffies(val);
525 *changed = true;
526 }
527 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]) {
528 u64 val;
529
530 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]);
531 v->br_mcast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val);
532 *changed = true;
533 }
534 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]) {
535 u64 val;
536
537 val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]);
538 v->br_mcast_ctx.multicast_startup_query_interval = clock_t_to_jiffies(val);
539 *changed = true;
540 }
541 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER]) {
542 u8 val;
543
544 val = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER]);
545 err = br_multicast_set_querier(&v->br_mcast_ctx, val);
546 if (err)
547 return err;
548 *changed = true;
549 }
550 #if IS_ENABLED(CONFIG_IPV6)
551 if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]) {
552 u8 ver;
553
554 ver = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]);
555 err = br_multicast_set_mld_version(&v->br_mcast_ctx, ver);
556 if (err)
557 return err;
558 *changed = true;
559 }
560 #endif
561 #endif
562
563 return 0;
564 }
565
566 static const struct nla_policy br_vlan_db_gpol[BRIDGE_VLANDB_GOPTS_MAX + 1] = {
567 [BRIDGE_VLANDB_GOPTS_ID] = { .type = NLA_U16 },
568 [BRIDGE_VLANDB_GOPTS_RANGE] = { .type = NLA_U16 },
569 [BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING] = { .type = NLA_U8 },
570 [BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION] = { .type = NLA_U8 },
571 [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
572 [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER] = { .type = NLA_U8 },
573 [BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
574 [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
575 [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
576 [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
577 [BRIDGE_VLANDB_GOPTS_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
578 [BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
579 [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
580 [BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
581 };
582
br_vlan_rtm_process_global_options(struct net_device * dev,const struct nlattr * attr,int cmd,struct netlink_ext_ack * extack)583 int br_vlan_rtm_process_global_options(struct net_device *dev,
584 const struct nlattr *attr,
585 int cmd,
586 struct netlink_ext_ack *extack)
587 {
588 struct net_bridge_vlan *v, *curr_start = NULL, *curr_end = NULL;
589 struct nlattr *tb[BRIDGE_VLANDB_GOPTS_MAX + 1];
590 struct net_bridge_vlan_group *vg;
591 u16 vid, vid_range = 0;
592 struct net_bridge *br;
593 int err = 0;
594
595 if (cmd != RTM_NEWVLAN) {
596 NL_SET_ERR_MSG_MOD(extack, "Global vlan options support only set operation");
597 return -EINVAL;
598 }
599 if (!netif_is_bridge_master(dev)) {
600 NL_SET_ERR_MSG_MOD(extack, "Global vlan options can only be set on bridge device");
601 return -EINVAL;
602 }
603 br = netdev_priv(dev);
604 vg = br_vlan_group(br);
605 if (WARN_ON(!vg))
606 return -ENODEV;
607
608 err = nla_parse_nested(tb, BRIDGE_VLANDB_GOPTS_MAX, attr,
609 br_vlan_db_gpol, extack);
610 if (err)
611 return err;
612
613 if (!tb[BRIDGE_VLANDB_GOPTS_ID]) {
614 NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry id");
615 return -EINVAL;
616 }
617 vid = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_ID]);
618 if (!br_vlan_valid_id(vid, extack))
619 return -EINVAL;
620
621 if (tb[BRIDGE_VLANDB_GOPTS_RANGE]) {
622 vid_range = nla_get_u16(tb[BRIDGE_VLANDB_GOPTS_RANGE]);
623 if (!br_vlan_valid_id(vid_range, extack))
624 return -EINVAL;
625 if (vid >= vid_range) {
626 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
627 return -EINVAL;
628 }
629 } else {
630 vid_range = vid;
631 }
632
633 for (; vid <= vid_range; vid++) {
634 bool changed = false;
635
636 v = br_vlan_find(vg, vid);
637 if (!v) {
638 NL_SET_ERR_MSG_MOD(extack, "Vlan in range doesn't exist, can't process global options");
639 err = -ENOENT;
640 break;
641 }
642
643 err = br_vlan_process_global_one_opts(br, vg, v, tb, &changed,
644 extack);
645 if (err)
646 break;
647
648 if (changed) {
649 /* vlan options changed, check for range */
650 if (!curr_start) {
651 curr_start = v;
652 curr_end = v;
653 continue;
654 }
655
656 if (!br_vlan_global_opts_can_enter_range(v, curr_end)) {
657 br_vlan_global_opts_notify(br, curr_start->vid,
658 curr_end->vid);
659 curr_start = v;
660 }
661 curr_end = v;
662 } else {
663 /* nothing changed and nothing to notify yet */
664 if (!curr_start)
665 continue;
666
667 br_vlan_global_opts_notify(br, curr_start->vid,
668 curr_end->vid);
669 curr_start = NULL;
670 curr_end = NULL;
671 }
672 }
673 if (curr_start)
674 br_vlan_global_opts_notify(br, curr_start->vid, curr_end->vid);
675
676 return err;
677 }
678
