kernel: Remove some unused variables.
[dragonfly.git] / sys / netproto / 802_11 / wlan / ieee80211_mesh.c
CommitLineData
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1/*-
2 * Copyright (c) 2009 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Rui Paulo under sponsorship from the
6 * FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: head/sys/net80211/ieee80211_mesh.c 203423 2010-02-03 10:12:49Z rpaulo $
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30 */
31
32/*
33 * IEEE 802.11s Mesh Point (MBSS) support.
34 *
35 * Based on March 2009, D3.0 802.11s draft spec.
36 */
37#include "opt_inet.h"
38#include "opt_wlan.h"
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/mbuf.h>
43#include <sys/malloc.h>
44#include <sys/kernel.h>
45
46#include <sys/socket.h>
47#include <sys/sockio.h>
48#include <sys/endian.h>
49#include <sys/errno.h>
50#include <sys/proc.h>
51#include <sys/sysctl.h>
52
53#include <net/if.h>
54#include <net/if_media.h>
55#include <net/if_llc.h>
56#include <net/ethernet.h>
57#include <net/route.h>
58
59#include <netproto/802_11/ieee80211_var.h>
60#include <netproto/802_11/ieee80211_action.h>
61#include <netproto/802_11/ieee80211_input.h>
62#include <netproto/802_11/ieee80211_mesh.h>
63
64static void mesh_rt_flush_invalid(struct ieee80211vap *);
65static int mesh_select_proto_path(struct ieee80211vap *, const char *);
66static int mesh_select_proto_metric(struct ieee80211vap *, const char *);
67static void mesh_vattach(struct ieee80211vap *);
68static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int);
47156d48 69static void mesh_rt_cleanup_callout(void *);
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70static void mesh_linkchange(struct ieee80211_node *,
71 enum ieee80211_mesh_mlstate);
72static void mesh_checkid(void *, struct ieee80211_node *);
73static uint32_t mesh_generateid(struct ieee80211vap *);
74static int mesh_checkpseq(struct ieee80211vap *,
75 const uint8_t [IEEE80211_ADDR_LEN], uint32_t);
76static struct ieee80211_node *
77 mesh_find_txnode(struct ieee80211vap *,
78 const uint8_t [IEEE80211_ADDR_LEN]);
79static void mesh_forward(struct ieee80211vap *, struct mbuf *,
80 const struct ieee80211_meshcntl *);
81static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int);
82static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int,
83 int, int);
84static void mesh_peer_timeout_setup(struct ieee80211_node *);
85static void mesh_peer_timeout_backoff(struct ieee80211_node *);
47156d48 86static void mesh_peer_timeout_callout(void *);
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87static __inline void
88 mesh_peer_timeout_stop(struct ieee80211_node *);
89static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *);
90static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *);
91static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t,
92 const uint8_t *);
93uint32_t mesh_airtime_calc(struct ieee80211_node *);
94
95/*
96 * Timeout values come from the specification and are in milliseconds.
97 */
98SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0,
99 "IEEE 802.11s parameters");
100static int ieee80211_mesh_retrytimeout = -1;
101SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW,
102 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I",
103 "Retry timeout (msec)");
104static int ieee80211_mesh_holdingtimeout = -1;
105SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW,
106 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I",
107 "Holding state timeout (msec)");
108static int ieee80211_mesh_confirmtimeout = -1;
109SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW,
110 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I",
111 "Confirm state timeout (msec)");
112static int ieee80211_mesh_maxretries = 2;
113SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW,
114 &ieee80211_mesh_maxretries, 0,
115 "Maximum retries during peer link establishment");
116
117static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] =
118 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
119
120static ieee80211_recv_action_func mesh_recv_action_meshpeering_open;
121static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm;
122static ieee80211_recv_action_func mesh_recv_action_meshpeering_close;
123static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req;
124static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep;
125
126static ieee80211_send_action_func mesh_send_action_meshpeering_open;
127static ieee80211_send_action_func mesh_send_action_meshpeering_confirm;
128static ieee80211_send_action_func mesh_send_action_meshpeering_close;
129static ieee80211_send_action_func mesh_send_action_meshlink_request;
130static ieee80211_send_action_func mesh_send_action_meshlink_reply;
131
132static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = {
133 .mpm_descr = "AIRTIME",
134 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME,
135 .mpm_metric = mesh_airtime_calc,
136};
137
138static struct ieee80211_mesh_proto_path mesh_proto_paths[4];
139static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4];
140
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141MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table");
142
143/*
144 * Helper functions to manipulate the Mesh routing table.
145 */
146
147static struct ieee80211_mesh_route *
148mesh_rt_find_locked(struct ieee80211_mesh_state *ms,
149 const uint8_t dest[IEEE80211_ADDR_LEN])
150{
151 struct ieee80211_mesh_route *rt;
152
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153 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
154 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest))
155 return rt;
156 }
157 return NULL;
158}
159
160static struct ieee80211_mesh_route *
161mesh_rt_add_locked(struct ieee80211_mesh_state *ms,
162 const uint8_t dest[IEEE80211_ADDR_LEN])
163{
164 struct ieee80211_mesh_route *rt;
165
166 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest),
167 ("%s: adding broadcast to the routing table", __func__));
168
32176cfd 169 rt = kmalloc(ALIGN(sizeof(struct ieee80211_mesh_route)) +
fcaa651d 170 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_INTWAIT | M_ZERO);
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171 if (rt != NULL) {
172 IEEE80211_ADDR_COPY(rt->rt_dest, dest);
173 rt->rt_priv = (void *)ALIGN(&rt[1]);
174 rt->rt_crtime = ticks;
175 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next);
176 }
177 return rt;
178}
179
180struct ieee80211_mesh_route *
181ieee80211_mesh_rt_find(struct ieee80211vap *vap,
182 const uint8_t dest[IEEE80211_ADDR_LEN])
183{
184 struct ieee80211_mesh_state *ms = vap->iv_mesh;
185 struct ieee80211_mesh_route *rt;
186
32176cfd 187 rt = mesh_rt_find_locked(ms, dest);
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188 return rt;
189}
190
191struct ieee80211_mesh_route *
192ieee80211_mesh_rt_add(struct ieee80211vap *vap,
193 const uint8_t dest[IEEE80211_ADDR_LEN])
194{
195 struct ieee80211_mesh_state *ms = vap->iv_mesh;
196 struct ieee80211_mesh_route *rt;
197
198 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL,
199 ("%s: duplicate entry in the routing table", __func__));
200 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest),
201 ("%s: adding self to the routing table", __func__));
202
32176cfd 203 rt = mesh_rt_add_locked(ms, dest);
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204 return rt;
205}
206
207/*
208 * Add a proxy route (as needed) for the specified destination.
209 */
210void
211ieee80211_mesh_proxy_check(struct ieee80211vap *vap,
212 const uint8_t dest[IEEE80211_ADDR_LEN])
213{
214 struct ieee80211_mesh_state *ms = vap->iv_mesh;
215 struct ieee80211_mesh_route *rt;
216
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217 rt = mesh_rt_find_locked(ms, dest);
218 if (rt == NULL) {
219 rt = mesh_rt_add_locked(ms, dest);
220 if (rt == NULL) {
221 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
222 "%s", "unable to add proxy entry");
223 vap->iv_stats.is_mesh_rtaddfailed++;
224 } else {
225 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
226 "%s", "add proxy entry");
227 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr);
228 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID
229 | IEEE80211_MESHRT_FLAGS_PROXY;
230 }
231 /* XXX assert PROXY? */
232 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) {
233 struct ieee80211com *ic = vap->iv_ic;
234 /*
235 * Fix existing entry created by received frames from
236 * stations that have some memory of dest. We also
237 * flush any frames held on the staging queue; delivering
238 * them is too much trouble right now.
239 */
240 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
241 "%s", "fix proxy entry");
242 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr);
243 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID
244 | IEEE80211_MESHRT_FLAGS_PROXY;
245 /* XXX belongs in hwmp */
246 ieee80211_ageq_drain_node(&ic->ic_stageq,
247 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest));
248 /* XXX stat? */
249 }
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250}
251
252static __inline void
253mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt)
254{
255 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next);
256 kfree(rt, M_80211_MESH_RT);
257}
258
259void
260ieee80211_mesh_rt_del(struct ieee80211vap *vap,
261 const uint8_t dest[IEEE80211_ADDR_LEN])
262{
263 struct ieee80211_mesh_state *ms = vap->iv_mesh;
264 struct ieee80211_mesh_route *rt, *next;
265
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266 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) {
267 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) {
268 mesh_rt_del(ms, rt);
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269 return;
270 }
271 }
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272}
273
274void
275ieee80211_mesh_rt_flush(struct ieee80211vap *vap)
276{
277 struct ieee80211_mesh_state *ms = vap->iv_mesh;
278 struct ieee80211_mesh_route *rt, *next;
279
280 if (ms == NULL)
281 return;
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282 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next)
283 mesh_rt_del(ms, rt);
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284}
285
286void
287ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap,
288 const uint8_t peer[IEEE80211_ADDR_LEN])
289{
290 struct ieee80211_mesh_state *ms = vap->iv_mesh;
291 struct ieee80211_mesh_route *rt, *next;
292
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293 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) {
294 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer))
295 mesh_rt_del(ms, rt);
296 }
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297}
298
299/*
300 * Flush expired routing entries, i.e. those in invalid state for
301 * some time.
302 */
303static void
304mesh_rt_flush_invalid(struct ieee80211vap *vap)
305{
306 struct ieee80211_mesh_state *ms = vap->iv_mesh;
307 struct ieee80211_mesh_route *rt, *next;
308
309 if (ms == NULL)
310 return;
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311 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) {
312 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 &&
313 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact)
314 mesh_rt_del(ms, rt);
315 }
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316}
317
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318int
319ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp)
320{
321 int i, firstempty = -1;
322
c157ff7a 323 for (i = 0; i < NELEM(mesh_proto_paths); i++) {
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324 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr,
325 IEEE80211_MESH_PROTO_DSZ) == 0)
326 return EEXIST;
327 if (!mesh_proto_paths[i].mpp_active && firstempty == -1)
328 firstempty = i;
329 }
330 if (firstempty < 0)
331 return ENOSPC;
332 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp));
333 mesh_proto_paths[firstempty].mpp_active = 1;
334 return 0;
335}
336
337int
338ieee80211_mesh_register_proto_metric(const struct
339 ieee80211_mesh_proto_metric *mpm)
340{
341 int i, firstempty = -1;
342
c157ff7a 343 for (i = 0; i < NELEM(mesh_proto_metrics); i++) {
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344 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr,
345 IEEE80211_MESH_PROTO_DSZ) == 0)
346 return EEXIST;
347 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1)
348 firstempty = i;
349 }
350 if (firstempty < 0)
351 return ENOSPC;
352 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm));
353 mesh_proto_metrics[firstempty].mpm_active = 1;
354 return 0;
355}
356
357static int
358mesh_select_proto_path(struct ieee80211vap *vap, const char *name)
359{
360 struct ieee80211_mesh_state *ms = vap->iv_mesh;
361 int i;
362
c157ff7a 363 for (i = 0; i < NELEM(mesh_proto_paths); i++) {
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364 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) {
365 ms->ms_ppath = &mesh_proto_paths[i];
366 return 0;
367 }
368 }
369 return ENOENT;
370}
371
372static int
373mesh_select_proto_metric(struct ieee80211vap *vap, const char *name)
374{
375 struct ieee80211_mesh_state *ms = vap->iv_mesh;
376 int i;
377
c157ff7a 378 for (i = 0; i < NELEM(mesh_proto_metrics); i++) {
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379 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) {
380 ms->ms_pmetric = &mesh_proto_metrics[i];
381 return 0;
382 }
383 }
384 return ENOENT;
385}
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386
387static void
388ieee80211_mesh_init(void)
389{
390
391 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths));
392 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics));
393
394 /*
395 * Setup mesh parameters that depends on the clock frequency.
396 */
397 ieee80211_mesh_retrytimeout = msecs_to_ticks(40);
398 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40);
399 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40);
400
401 /*
402 * Register action frame handlers.
403 */
404 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
405 IEEE80211_ACTION_MESHPEERING_OPEN,
406 mesh_recv_action_meshpeering_open);
407 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
408 IEEE80211_ACTION_MESHPEERING_CONFIRM,
409 mesh_recv_action_meshpeering_confirm);
410 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
411 IEEE80211_ACTION_MESHPEERING_CLOSE,
412 mesh_recv_action_meshpeering_close);
413 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
414 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req);
415 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
416 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep);
417
418 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
419 IEEE80211_ACTION_MESHPEERING_OPEN,
420 mesh_send_action_meshpeering_open);
421 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
422 IEEE80211_ACTION_MESHPEERING_CONFIRM,
423 mesh_send_action_meshpeering_confirm);
424 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
425 IEEE80211_ACTION_MESHPEERING_CLOSE,
426 mesh_send_action_meshpeering_close);
427 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
428 IEEE80211_ACTION_MESHLMETRIC_REQ,
429 mesh_send_action_meshlink_request);
430 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
431 IEEE80211_ACTION_MESHLMETRIC_REP,
432 mesh_send_action_meshlink_reply);
433
434 /*
435 * Register Airtime Link Metric.
436 */
437 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime);
438
439}
440SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL);
441
442void
443ieee80211_mesh_attach(struct ieee80211com *ic)
444{
445 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach;
446}
447
448void
449ieee80211_mesh_detach(struct ieee80211com *ic)
450{
451}
452
453static void
454mesh_vdetach_peers(void *arg, struct ieee80211_node *ni)
455{
456 struct ieee80211com *ic = ni->ni_ic;
457 uint16_t args[3];
458
459 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) {
460 args[0] = ni->ni_mlpid;
461 args[1] = ni->ni_mllid;
462 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
463 ieee80211_send_action(ni,
464 IEEE80211_ACTION_CAT_MESHPEERING,
465 IEEE80211_ACTION_MESHPEERING_CLOSE,
466 args);
467 }
dfcf81fd 468 callout_stop(&ni->ni_mltimer);
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469 /* XXX belongs in hwmp */
470 ieee80211_ageq_drain_node(&ic->ic_stageq,
471 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr));
472}
473
474static void
475mesh_vdetach(struct ieee80211vap *vap)
476{
477 struct ieee80211_mesh_state *ms = vap->iv_mesh;
478
dfcf81fd 479 callout_stop(&ms->ms_cleantimer);
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480 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers,
481 NULL);
482 ieee80211_mesh_rt_flush(vap);
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483 ms->ms_ppath->mpp_vdetach(vap);
484 kfree(vap->iv_mesh, M_80211_VAP);
485 vap->iv_mesh = NULL;
486}
487
488static void
489mesh_vattach(struct ieee80211vap *vap)
490{
491 struct ieee80211_mesh_state *ms;
492 vap->iv_newstate = mesh_newstate;
493 vap->iv_input = mesh_input;
494 vap->iv_opdetach = mesh_vdetach;
495 vap->iv_recv_mgmt = mesh_recv_mgmt;
496 ms = kmalloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP,
fcaa651d 497 M_INTWAIT | M_ZERO);
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498 if (ms == NULL) {
499 kprintf("%s: couldn't alloc MBSS state\n", __func__);
500 return;
501 }
502 vap->iv_mesh = ms;
503 ms->ms_seq = 0;
504 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD);
505 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL;
506 TAILQ_INIT(&ms->ms_routes);
34a60cf6 507 callout_init_mp(&ms->ms_cleantimer);
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508 mesh_select_proto_metric(vap, "AIRTIME");
509 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL"));
510 mesh_select_proto_path(vap, "HWMP");
511 KASSERT(ms->ms_ppath, ("ms_ppath == NULL"));
512 ms->ms_ppath->mpp_vattach(vap);
513}
514
515/*
516 * IEEE80211_M_MBSS vap state machine handler.
517 */
518static int
519mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
520{
521 struct ieee80211_mesh_state *ms = vap->iv_mesh;
522 struct ieee80211com *ic = vap->iv_ic;
523 struct ieee80211_node *ni;
524 enum ieee80211_state ostate;
525
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526 ostate = vap->iv_state;
527 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n",
528 __func__, ieee80211_state_name[ostate],
529 ieee80211_state_name[nstate], arg);
530 vap->iv_state = nstate; /* state transition */
531 if (ostate != IEEE80211_S_SCAN)
532 ieee80211_cancel_scan(vap); /* background scan */
533 ni = vap->iv_bss; /* NB: no reference held */
534 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN)
dfcf81fd 535 callout_stop(&ms->ms_cleantimer);
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536 switch (nstate) {
537 case IEEE80211_S_INIT:
538 switch (ostate) {
539 case IEEE80211_S_SCAN:
540 ieee80211_cancel_scan(vap);
541 break;
542 case IEEE80211_S_CAC:
543 ieee80211_dfs_cac_stop(vap);
544 break;
545 case IEEE80211_S_RUN:
546 ieee80211_iterate_nodes(&ic->ic_sta,
547 mesh_vdetach_peers, NULL);
548 break;
549 default:
550 break;
551 }
552 if (ostate != IEEE80211_S_INIT) {
553 /* NB: optimize INIT -> INIT case */
554 ieee80211_reset_bss(vap);
555 ieee80211_mesh_rt_flush(vap);
556 }
557 break;
558 case IEEE80211_S_SCAN:
559 switch (ostate) {
560 case IEEE80211_S_INIT:
561 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC &&
562 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) &&
563 ms->ms_idlen != 0) {
564 /*
565 * Already have a channel and a mesh ID; bypass
566 * the scan and startup immediately.
567 */
568 ieee80211_create_ibss(vap, vap->iv_des_chan);
569 break;
570 }
571 /*
572 * Initiate a scan. We can come here as a result
573 * of an IEEE80211_IOC_SCAN_REQ too in which case
574 * the vap will be marked with IEEE80211_FEXT_SCANREQ
575 * and the scan request parameters will be present
576 * in iv_scanreq. Otherwise we do the default.
577 */
578 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) {
579 ieee80211_check_scan(vap,
580 vap->iv_scanreq_flags,
581 vap->iv_scanreq_duration,
582 vap->iv_scanreq_mindwell,
583 vap->iv_scanreq_maxdwell,
584 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid);
585 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ;
586 } else
587 ieee80211_check_scan_current(vap);
588 break;
589 default:
590 break;
591 }
592 break;
593 case IEEE80211_S_CAC:
594 /*
595 * Start CAC on a DFS channel. We come here when starting
596 * a bss on a DFS channel (see ieee80211_create_ibss).
597 */
598 ieee80211_dfs_cac_start(vap);
599 break;
600 case IEEE80211_S_RUN:
601 switch (ostate) {
602 case IEEE80211_S_INIT:
603 /*
604 * Already have a channel; bypass the
605 * scan and startup immediately.
606 * Note that ieee80211_create_ibss will call
607 * back to do a RUN->RUN state change.
608 */
609 ieee80211_create_ibss(vap,
610 ieee80211_ht_adjust_channel(ic,
611 ic->ic_curchan, vap->iv_flags_ht));
612 /* NB: iv_bss is changed on return */
613 break;
614 case IEEE80211_S_CAC:
615 /*
616 * NB: This is the normal state change when CAC
617 * expires and no radar was detected; no need to
618 * clear the CAC timer as it's already expired.
619 */
620 /* fall thru... */
621 case IEEE80211_S_CSA:
622#if 0
623 /*
624 * Shorten inactivity timer of associated stations
625 * to weed out sta's that don't follow a CSA.
626 */
627 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap);
628#endif
629 /*
630 * Update bss node channel to reflect where
631 * we landed after CSA.
632 */
633 ieee80211_node_set_chan(vap->iv_bss,
634 ieee80211_ht_adjust_channel(ic, ic->ic_curchan,
635 ieee80211_htchanflags(vap->iv_bss->ni_chan)));
636 /* XXX bypass debug msgs */
637 break;
638 case IEEE80211_S_SCAN:
639 case IEEE80211_S_RUN:
640#ifdef IEEE80211_DEBUG
641 if (ieee80211_msg_debug(vap)) {
642 struct ieee80211_node *ni = vap->iv_bss;
643 ieee80211_note(vap,
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644 "synchronized with %6D meshid ",
645 ni->ni_meshid, ":");
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646 ieee80211_print_essid(ni->ni_meshid,
647 ni->ni_meshidlen);
648 /* XXX MCS/HT */
6168f72e 649 kprintf(" channel %d\n",
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650 ieee80211_chan2ieee(ic, ic->ic_curchan));
651 }
652#endif
653 break;
654 default:
655 break;
656 }
657 ieee80211_node_authorize(vap->iv_bss);
658 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact,
47156d48 659 mesh_rt_cleanup_callout, vap);
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660 break;
661 default:
662 break;
663 }
664 /* NB: ostate not nstate */
665 ms->ms_ppath->mpp_newstate(vap, ostate, arg);
666 return 0;
667}
668
669static void
47156d48 670mesh_rt_cleanup_callout(void *arg)
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671{
672 struct ieee80211vap *vap = arg;
673 struct ieee80211_mesh_state *ms = vap->iv_mesh;
674
47156d48 675 wlan_serialize_enter();
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676 mesh_rt_flush_invalid(vap);
677 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact,
47156d48
MD
678 mesh_rt_cleanup_callout, vap);
679 wlan_serialize_exit();
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680}
681
682
683/*
684 * Helper function to note the Mesh Peer Link FSM change.
685 */
686static void
687mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state)
688{
689 struct ieee80211vap *vap = ni->ni_vap;
690 struct ieee80211_mesh_state *ms = vap->iv_mesh;
691#ifdef IEEE80211_DEBUG
692 static const char *meshlinkstates[] = {
693 [IEEE80211_NODE_MESH_IDLE] = "IDLE",
694 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT",
695 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED",
696 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED",
697 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED",
698 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING"
699 };
700#endif
701 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH,
702 ni, "peer link: %s -> %s",
703 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]);
704
705 /* track neighbor count */
706 if (state == IEEE80211_NODE_MESH_ESTABLISHED &&
707 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) {
708 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow"));
709 ms->ms_neighbors++;
710 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF);
711 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED &&
712 state != IEEE80211_NODE_MESH_ESTABLISHED) {
713 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0"));
714 ms->ms_neighbors--;
715 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF);
716 }
717 ni->ni_mlstate = state;
718 switch (state) {
719 case IEEE80211_NODE_MESH_HOLDING:
720 ms->ms_ppath->mpp_peerdown(ni);
721 break;
722 case IEEE80211_NODE_MESH_ESTABLISHED:
723 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL);
724 break;
725 default:
726 break;
727 }
728}
729
730/*
731 * Helper function to generate a unique local ID required for mesh
732 * peer establishment.
733 */
734static void
735mesh_checkid(void *arg, struct ieee80211_node *ni)
736{
737 uint16_t *r = arg;
738
739 if (*r == ni->ni_mllid)
740 *(uint16_t *)arg = 0;
741}
742
743static uint32_t
744mesh_generateid(struct ieee80211vap *vap)
745{
746 int maxiter = 4;
747 uint16_t r;
748
749 do {
750 get_random_bytes(&r, 2);
751 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r);
752 maxiter--;
753 } while (r == 0 && maxiter > 0);
754 return r;
755}
756
757/*
758 * Verifies if we already received this packet by checking its
759 * sequence number.
760 * Returns 0 if the frame is to be accepted, 1 otherwise.
761 */
762static int
763mesh_checkpseq(struct ieee80211vap *vap,
764 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq)
765{
766 struct ieee80211_mesh_route *rt;
767
768 rt = ieee80211_mesh_rt_find(vap, source);
769 if (rt == NULL) {
770 rt = ieee80211_mesh_rt_add(vap, source);
771 if (rt == NULL) {
772 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source,
773 "%s", "add mcast route failed");
774 vap->iv_stats.is_mesh_rtaddfailed++;
775 return 1;
776 }
777 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source,
778 "add mcast route, mesh seqno %d", seq);
779 rt->rt_lastmseq = seq;
780 return 0;
781 }
782 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) {
783 return 1;
784 } else {
785 rt->rt_lastmseq = seq;
786 return 0;
787 }
788}
789
790/*
791 * Iterate the routing table and locate the next hop.
792 */
793static struct ieee80211_node *
794mesh_find_txnode(struct ieee80211vap *vap,
795 const uint8_t dest[IEEE80211_ADDR_LEN])
796{
797 struct ieee80211_mesh_route *rt;
798
799 rt = ieee80211_mesh_rt_find(vap, dest);
800 if (rt == NULL)
801 return NULL;
802 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 ||
803 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) {
804 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
805 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags);
806 /* XXX stat */
807 return NULL;
808 }
809 return ieee80211_find_txnode(vap, rt->rt_nexthop);
810}
811
812/*
813 * Forward the specified frame.
814 * Decrement the TTL and set TA to our MAC address.
815 */
816static void
817mesh_forward(struct ieee80211vap *vap, struct mbuf *m,
818 const struct ieee80211_meshcntl *mc)
819{
820 struct ieee80211com *ic = vap->iv_ic;
821 struct ieee80211_mesh_state *ms = vap->iv_mesh;
822 struct ifnet *ifp = vap->iv_ifp;
823 struct ifnet *parent = ic->ic_ifp;
824 const struct ieee80211_frame *wh =
825 mtod(m, const struct ieee80211_frame *);
826 struct mbuf *mcopy;
827 struct ieee80211_meshcntl *mccopy;
828 struct ieee80211_frame *whcopy;
829 struct ieee80211_node *ni;
830 int err;
831
832 if (mc->mc_ttl == 0) {
833 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
834 "%s", "frame not fwd'd, ttl 0");
835 vap->iv_stats.is_mesh_fwd_ttl++;
836 return;
837 }
838 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) {
839 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
840 "%s", "frame not fwd'd, fwding disabled");
841 vap->iv_stats.is_mesh_fwd_disabled++;
842 return;
843 }
844 mcopy = m_dup(m, MB_DONTWAIT);
845 if (mcopy == NULL) {
846 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
847 "%s", "frame not fwd'd, cannot dup");
848 vap->iv_stats.is_mesh_fwd_nobuf++;
849 ifp->if_oerrors++;
850 return;
851 }
852 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) +
853 sizeof(struct ieee80211_meshcntl));
854 if (mcopy == NULL) {
855 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
856 "%s", "frame not fwd'd, too short");
857 vap->iv_stats.is_mesh_fwd_tooshort++;
858 ifp->if_oerrors++;
859 m_freem(mcopy);
860 return;
861 }
862 whcopy = mtod(mcopy, struct ieee80211_frame *);
863 mccopy = (struct ieee80211_meshcntl *)
864 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh));
865 /* XXX clear other bits? */
866 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY;
867 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr);
868 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
869 ni = ieee80211_ref_node(vap->iv_bss);
870 mcopy->m_flags |= M_MCAST;
871 } else {
872 ni = mesh_find_txnode(vap, whcopy->i_addr3);
873 if (ni == NULL) {
874 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
875 "%s", "frame not fwd'd, no path");
876 vap->iv_stats.is_mesh_fwd_nopath++;
877 m_freem(mcopy);
878 return;
879 }
880 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr);
881 }
882 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__));
883 mccopy->mc_ttl--;
884
885 /* XXX calculate priority so drivers can find the tx queue */
886 M_WME_SETAC(mcopy, WME_AC_BE);
887
888 /* XXX do we know m_nextpkt is NULL? */
889 mcopy->m_pkthdr.rcvif = (void *) ni;
fcaa651d 890 err = ieee80211_handoff(parent, mcopy);
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891 if (err != 0) {
892 /* NB: IFQ_HANDOFF reclaims mbuf */
893 ieee80211_free_node(ni);
894 } else {
895 ifp->if_opackets++;
896 }
897}
898
899static struct mbuf *
900mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen)
901{
902#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK)
903 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) +
904 sizeof(struct ieee80211_meshcntl_ae11)];
905 const struct ieee80211_qosframe_addr4 *wh;
906 const struct ieee80211_meshcntl_ae10 *mc;
907 struct ether_header *eh;
908 struct llc *llc;
909 int ae;
910
911 if (m->m_len < hdrlen + sizeof(*llc) &&
912 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) {
913 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY,
914 "discard data frame: %s", "m_pullup failed");
915 vap->iv_stats.is_rx_tooshort++;
916 return NULL;
917 }
918 memcpy(b, mtod(m, caddr_t), hdrlen);
919 wh = (const struct ieee80211_qosframe_addr4 *)&b[0];
920 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen];
921 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS ||
922 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS,
923 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1]));
924
925 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen);
926 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP &&
927 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 &&
928 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 &&
d22a69a4 929 !(llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) {
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930 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh));
931 llc = NULL;
932 } else {
933 m_adj(m, hdrlen - sizeof(*eh));
934 }
935 eh = mtod(m, struct ether_header *);
936 ae = mc->mc_flags & 3;
937 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) {
938 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1);
939 if (ae == 0) {
940 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3);
941 } else if (ae == 1) {
942 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4);
943 } else {
944 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
945 (const struct ieee80211_frame *)wh, NULL,
946 "bad AE %d", ae);
947 vap->iv_stats.is_mesh_badae++;
948 m_freem(m);
949 return NULL;
950 }
951 } else {
952 if (ae == 0) {
953 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3);
954 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4);
955 } else if (ae == 2) {
956 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4);
957 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5);
958 } else {
959 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
960 (const struct ieee80211_frame *)wh, NULL,
961 "bad AE %d", ae);
962 vap->iv_stats.is_mesh_badae++;
963 m_freem(m);
964 return NULL;
965 }
966 }
967#ifdef ALIGNED_POINTER
968 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) {
969 m = ieee80211_realign(vap, m, sizeof(*eh));
970 if (m == NULL)
971 return NULL;
972 }
973#endif /* ALIGNED_POINTER */
974 if (llc != NULL) {
975 eh = mtod(m, struct ether_header *);
976 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh));
977 }
978 return m;
979#undef WDIR
980}
981
982/*
983 * Return non-zero if the unicast mesh data frame should be processed
984 * locally. Frames that are not proxy'd have our address, otherwise
985 * we need to consult the routing table to look for a proxy entry.
986 */
987static __inline int
988mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh,
989 const struct ieee80211_meshcntl *mc)
990{
991 int ae = mc->mc_flags & 3;
992
993 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS,
994 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1]));
995 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae));
996 if (ae == 2) { /* ucast w/ proxy */
997 const struct ieee80211_meshcntl_ae10 *mc10 =
998 (const struct ieee80211_meshcntl_ae10 *) mc;
999 struct ieee80211_mesh_route *rt =
1000 ieee80211_mesh_rt_find(vap, mc10->mc_addr4);
1001 /* check for proxy route to ourself */
1002 return (rt != NULL &&
1003 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY));
1004 } else /* ucast w/o proxy */
1005 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr);
1006}
1007
1008static int
1009mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf)
1010{
1011#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0)
1012#define HAS_SEQ(type) ((type & 0x4) == 0)
1013 struct ieee80211vap *vap = ni->ni_vap;
1014 struct ieee80211com *ic = ni->ni_ic;
1015 struct ifnet *ifp = vap->iv_ifp;
1016 struct ieee80211_frame *wh;
1017 const struct ieee80211_meshcntl *mc;
1018 int hdrspace, meshdrlen, need_tap;
1019 uint8_t dir, type, subtype, qos;
1020 uint32_t seq;
1021 uint8_t *addr;
1022 ieee80211_seq rxseq;
1023
1024 KASSERT(ni != NULL, ("null node"));
1025 ni->ni_inact = ni->ni_inact_reload;
1026
1027 need_tap = 1; /* mbuf need to be tapped. */
1028 type = -1; /* undefined */
1029
1030 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) {
1031 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
1032 ni->ni_macaddr, NULL,
1033 "too short (1): len %u", m->m_pkthdr.len);
1034 vap->iv_stats.is_rx_tooshort++;
1035 goto out;
1036 }
1037 /*
1038 * Bit of a cheat here, we use a pointer for a 3-address
1039 * frame format but don't reference fields past outside
1040 * ieee80211_frame_min w/o first validating the data is
1041 * present.
1042 */
1043 wh = mtod(m, struct ieee80211_frame *);
1044
1045 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) !=
1046 IEEE80211_FC0_VERSION_0) {
1047 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
1048 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]);
1049 vap->iv_stats.is_rx_badversion++;
1050 goto err;
1051 }
1052 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
1053 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
1054 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1055 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
1056 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi);
1057 ni->ni_noise = nf;
1058 if (HAS_SEQ(type)) {
1059 uint8_t tid = ieee80211_gettid(wh);
1060
1061 if (IEEE80211_QOS_HAS_SEQ(wh) &&
1062 TID_TO_WME_AC(tid) >= WME_AC_VI)
1063 ic->ic_wme.wme_hipri_traffic++;
1064 rxseq = le16toh(*(uint16_t *)wh->i_seq);
1065 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 &&
1066 (wh->i_fc[1] & IEEE80211_FC1_RETRY) &&
1067 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) {
1068 /* duplicate, discard */
1069 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
1070 wh->i_addr1, "duplicate",
1071 "seqno <%u,%u> fragno <%u,%u> tid %u",
1072 rxseq >> IEEE80211_SEQ_SEQ_SHIFT,
1073 ni->ni_rxseqs[tid] >>
1074 IEEE80211_SEQ_SEQ_SHIFT,
1075 rxseq & IEEE80211_SEQ_FRAG_MASK,
1076 ni->ni_rxseqs[tid] &
1077 IEEE80211_SEQ_FRAG_MASK,
1078 tid);
1079 vap->iv_stats.is_rx_dup++;
1080 IEEE80211_NODE_STAT(ni, rx_dup);
1081 goto out;
1082 }
1083 ni->ni_rxseqs[tid] = rxseq;
1084 }
1085 }
1086#ifdef IEEE80211_DEBUG
1087 /*
1088 * It's easier, but too expensive, to simulate different mesh
1089 * topologies by consulting the ACL policy very early, so do this
1090 * only under DEBUG.
1091 *
1092 * NB: this check is also done upon peering link initiation.
1093 */
1094 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) {
1095 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL,
1096 wh, NULL, "%s", "disallowed by ACL");
1097 vap->iv_stats.is_rx_acl++;
1098 goto out;
1099 }
1100#endif
1101 switch (type) {
1102 case IEEE80211_FC0_TYPE_DATA:
1103 if (ni == vap->iv_bss)
1104 goto out;
1105 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) {
1106 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH,
1107 ni->ni_macaddr, NULL,
1108 "peer link not yet established (%d)",
1109 ni->ni_mlstate);
1110 vap->iv_stats.is_mesh_nolink++;
1111 goto out;
1112 }
1113 if (dir != IEEE80211_FC1_DIR_FROMDS &&
1114 dir != IEEE80211_FC1_DIR_DSTODS) {
1115 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1116 wh, "data", "incorrect dir 0x%x", dir);
1117 vap->iv_stats.is_rx_wrongdir++;
1118 goto err;
1119 }
1120 /* pull up enough to get to the mesh control */
1121 hdrspace = ieee80211_hdrspace(ic, wh);
1122 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) &&
1123 (m = m_pullup(m, hdrspace +
1124 sizeof(struct ieee80211_meshcntl))) == NULL) {
1125 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
1126 ni->ni_macaddr, NULL,
1127 "data too short: expecting %u", hdrspace);
1128 vap->iv_stats.is_rx_tooshort++;
1129 goto out; /* XXX */
1130 }
1131 /*
1132 * Now calculate the full extent of the headers. Note
1133 * mesh_decap will pull up anything we didn't get
1134 * above when it strips the 802.11 headers.
1135 */
1136 mc = (const struct ieee80211_meshcntl *)
1137 (mtod(m, const uint8_t *) + hdrspace);
1138 meshdrlen = sizeof(struct ieee80211_meshcntl) +
1139 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN;
1140 hdrspace += meshdrlen;
1141 seq = LE_READ_4(mc->mc_seq);
1142 if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1143 addr = wh->i_addr3;
1144 else
1145 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4;
1146 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) {
1147 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
1148 addr, "data", "%s", "not to me");
1149 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */
1150 goto out;
1151 }
1152 if (mesh_checkpseq(vap, addr, seq) != 0) {
1153 vap->iv_stats.is_rx_dup++;
1154 goto out;
1155 }
1156
1157 /*
1158 * Potentially forward packet. See table s36 (p140)
1159 * for the rules. XXX tap fwd'd packets not for us?
1160 */
1161 if (dir == IEEE80211_FC1_DIR_FROMDS ||
1162 !mesh_isucastforme(vap, wh, mc)) {
1163 mesh_forward(vap, m, mc);
1164 if (dir == IEEE80211_FC1_DIR_DSTODS)
1165 goto out;
1166 /* NB: fall thru to deliver mcast frames locally */
1167 }
1168
1169 /*
1170 * Save QoS bits for use below--before we strip the header.
1171 */
1172 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) {
1173 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ?
1174 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] :
1175 ((struct ieee80211_qosframe *)wh)->i_qos[0];
1176 } else
1177 qos = 0;
1178 /*
1179 * Next up, any fragmentation.
1180 */
1181 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1182 m = ieee80211_defrag(ni, m, hdrspace);
1183 if (m == NULL) {
1184 /* Fragment dropped or frame not complete yet */
1185 goto out;
1186 }
1187 }
1188 wh = NULL; /* no longer valid, catch any uses */
1189
1190 if (ieee80211_radiotap_active_vap(vap))
1191 ieee80211_radiotap_rx(vap, m);
1192 need_tap = 0;
1193
1194 /*
1195 * Finally, strip the 802.11 header.
1196 */
1197 m = mesh_decap(vap, m, hdrspace, meshdrlen);
1198 if (m == NULL) {
1199 /* XXX mask bit to check for both */
1200 /* don't count Null data frames as errors */
1201 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA ||
1202 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL)
1203 goto out;
1204 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
1205 ni->ni_macaddr, "data", "%s", "decap error");
1206 vap->iv_stats.is_rx_decap++;
1207 IEEE80211_NODE_STAT(ni, rx_decap);
1208 goto err;
1209 }
1210 if (qos & IEEE80211_QOS_AMSDU) {
1211 m = ieee80211_decap_amsdu(ni, m);
1212 if (m == NULL)
1213 return IEEE80211_FC0_TYPE_DATA;
1214 }
1215 ieee80211_deliver_data(vap, ni, m);
1216 return type;
1217 case IEEE80211_FC0_TYPE_MGT:
1218 vap->iv_stats.is_rx_mgmt++;
1219 IEEE80211_NODE_STAT(ni, rx_mgmt);
1220 if (dir != IEEE80211_FC1_DIR_NODS) {
1221 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1222 wh, "mgt", "incorrect dir 0x%x", dir);
1223 vap->iv_stats.is_rx_wrongdir++;
1224 goto err;
1225 }
1226 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) {
1227 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
1228 ni->ni_macaddr, "mgt", "too short: len %u",
1229 m->m_pkthdr.len);
1230 vap->iv_stats.is_rx_tooshort++;
1231 goto out;
1232 }
1233#ifdef IEEE80211_DEBUG
1234 if ((ieee80211_msg_debug(vap) &&
1235 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) ||
1236 ieee80211_msg_dumppkts(vap)) {
6168f72e 1237 if_printf(ifp, "received %s from %6D rssi %d\n",
32176cfd
RP
1238 ieee80211_mgt_subtype_name[subtype >>
1239 IEEE80211_FC0_SUBTYPE_SHIFT],
6168f72e 1240 wh->i_addr2, ":", rssi);
32176cfd
RP
1241 }
1242#endif
1243 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1244 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1245 wh, NULL, "%s", "WEP set but not permitted");
1246 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */
1247 goto out;
1248 }
1249 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf);
1250 goto out;
1251 case IEEE80211_FC0_TYPE_CTL:
1252 vap->iv_stats.is_rx_ctl++;
1253 IEEE80211_NODE_STAT(ni, rx_ctrl);
1254 goto out;
1255 default:
1256 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
1257 wh, "bad", "frame type 0x%x", type);
1258 /* should not come here */
1259 break;
1260 }
1261err:
1262 ifp->if_ierrors++;
1263out:
1264 if (m != NULL) {
1265 if (need_tap && ieee80211_radiotap_active_vap(vap))
1266 ieee80211_radiotap_rx(vap, m);
1267 m_freem(m);
1268 }
1269 return type;
1270}
1271
1272static void
1273mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype,
1274 int rssi, int nf)
1275{
1276 struct ieee80211vap *vap = ni->ni_vap;
1277 struct ieee80211_mesh_state *ms = vap->iv_mesh;
1278 struct ieee80211com *ic = ni->ni_ic;
1279 struct ieee80211_frame *wh;
1280 uint8_t *frm, *efrm;
1281
1282 wh = mtod(m0, struct ieee80211_frame *);
1283 frm = (uint8_t *)&wh[1];
1284 efrm = mtod(m0, uint8_t *) + m0->m_len;
1285 switch (subtype) {
1286 case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
1287 case IEEE80211_FC0_SUBTYPE_BEACON:
1288 {
1289 struct ieee80211_scanparams scan;
1290 /*
1291 * We process beacon/probe response
1292 * frames to discover neighbors.
1293 */
1294 if (ieee80211_parse_beacon(ni, m0, &scan) != 0)
1295 return;
1296 /*
1297 * Count frame now that we know it's to be processed.
1298 */
1299 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) {
1300 vap->iv_stats.is_rx_beacon++; /* XXX remove */
1301 IEEE80211_NODE_STAT(ni, rx_beacons);
1302 } else
1303 IEEE80211_NODE_STAT(ni, rx_proberesp);
1304 /*
1305 * If scanning, just pass information to the scan module.
1306 */
1307 if (ic->ic_flags & IEEE80211_F_SCAN) {
1308 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) {
1309 /*
1310 * Actively scanning a channel marked passive;
1311 * send a probe request now that we know there
1312 * is 802.11 traffic present.
1313 *
1314 * XXX check if the beacon we recv'd gives
1315 * us what we need and suppress the probe req
1316 */
1317 ieee80211_probe_curchan(vap, 1);
1318 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN;
1319 }
1320 ieee80211_add_scan(vap, &scan, wh,
1321 subtype, rssi, nf);
1322 return;
1323 }
1324
1325 /* The rest of this code assumes we are running */
1326 if (vap->iv_state != IEEE80211_S_RUN)
1327 return;
1328 /*
1329 * Ignore non-mesh STAs.
1330 */
1331 if ((scan.capinfo &
1332 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) ||
1333 scan.meshid == NULL || scan.meshconf == NULL) {
1334 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1335 wh, "beacon", "%s", "not a mesh sta");
1336 vap->iv_stats.is_mesh_wrongmesh++;
1337 return;
1338 }
1339 /*
1340 * Ignore STAs for other mesh networks.
1341 */
1342 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 ||
1343 mesh_verify_meshconf(vap, scan.meshconf)) {
1344 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1345 wh, "beacon", "%s", "not for our mesh");
1346 vap->iv_stats.is_mesh_wrongmesh++;
1347 return;
1348 }
1349 /*
1350 * Peer only based on the current ACL policy.
1351 */
1352 if (vap->iv_acl != NULL &&
1353 !vap->iv_acl->iac_check(vap, wh->i_addr2)) {
1354 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL,
1355 wh, NULL, "%s", "disallowed by ACL");
1356 vap->iv_stats.is_rx_acl++;
1357 return;
1358 }
1359 /*
1360 * Do neighbor discovery.
1361 */
1362 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) {
1363 /*
1364 * Create a new entry in the neighbor table.
1365 */
1366 ni = ieee80211_add_neighbor(vap, wh, &scan);
1367 }
1368 /*
1369 * Automatically peer with discovered nodes if possible.
1370 * XXX backoff on repeated failure
1371 */
1372 if (ni != vap->iv_bss &&
1373 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) &&
1374 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) {
1375 uint16_t args[1];
1376
1377 ni->ni_mlpid = mesh_generateid(vap);
1378 if (ni->ni_mlpid == 0)
1379 return;
1380 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT);
1381 args[0] = ni->ni_mlpid;
1382 ieee80211_send_action(ni,
1383 IEEE80211_ACTION_CAT_MESHPEERING,
1384 IEEE80211_ACTION_MESHPEERING_OPEN, args);
1385 ni->ni_mlrcnt = 0;
1386 mesh_peer_timeout_setup(ni);
1387 }
1388 break;
1389 }
1390 case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
1391 {
1392 uint8_t *ssid, *meshid, *rates, *xrates;
32176cfd
RP
1393
1394 if (vap->iv_state != IEEE80211_S_RUN) {
1395 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1396 wh, NULL, "wrong state %s",
1397 ieee80211_state_name[vap->iv_state]);
1398 vap->iv_stats.is_rx_mgtdiscard++;
1399 return;
1400 }
1401 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) {
1402 /* frame must be directed */
1403 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1404 wh, NULL, "%s", "not unicast");
1405 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */
1406 return;
1407 }
1408 /*
1409 * prreq frame format
1410 * [tlv] ssid
1411 * [tlv] supported rates
1412 * [tlv] extended supported rates
1413 * [tlv] mesh id
1414 */
1415 ssid = meshid = rates = xrates = NULL;
32176cfd
RP
1416 while (efrm - frm > 1) {
1417 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1418 switch (*frm) {
1419 case IEEE80211_ELEMID_SSID:
1420 ssid = frm;
1421 break;
1422 case IEEE80211_ELEMID_RATES:
1423 rates = frm;
1424 break;
1425 case IEEE80211_ELEMID_XRATES:
1426 xrates = frm;
1427 break;
1428 case IEEE80211_ELEMID_MESHID:
1429 meshid = frm;
1430 break;
1431 }
1432 frm += frm[2] + 2;
1433 }
1434 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return);
1435 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return);
1436 if (xrates != NULL)
1437 IEEE80211_VERIFY_ELEMENT(xrates,
1438 IEEE80211_RATE_MAXSIZE - rates[1], return);
1439 if (meshid != NULL) {
1440 IEEE80211_VERIFY_ELEMENT(meshid,
1441 IEEE80211_MESHID_LEN, return);
1442 /* NB: meshid, not ssid */
1443 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return);
1444 }
1445
1446 /* XXX find a better class or define it's own */
1447 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2,
1448 "%s", "recv probe req");
1449 /*
1450 * Some legacy 11b clients cannot hack a complete
1451 * probe response frame. When the request includes
1452 * only a bare-bones rate set, communicate this to
1453 * the transmit side.
1454 */
1455 ieee80211_send_proberesp(vap, wh->i_addr2, 0);
1456 break;
1457 }
1458 case IEEE80211_FC0_SUBTYPE_ACTION:
1459 if (vap->iv_state != IEEE80211_S_RUN) {
1460 vap->iv_stats.is_rx_mgtdiscard++;
1461 break;
1462 }
1463 /*
1464 * We received an action for an unknown neighbor.
1465 * XXX: wait for it to beacon or create ieee80211_node?
1466 */
1467 if (ni == vap->iv_bss) {
1468 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH,
1469 wh, NULL, "%s", "unknown node");
1470 vap->iv_stats.is_rx_mgtdiscard++;
1471 break;
1472 }
1473 /*
1474 * Discard if not for us.
1475 */
1476 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) &&
1477 !IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1478 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH,
1479 wh, NULL, "%s", "not for me");
1480 vap->iv_stats.is_rx_mgtdiscard++;
1481 break;
1482 }
1483 /* XXX parse_action is a bit useless now */
1484 if (ieee80211_parse_action(ni, m0) == 0)
1485 ic->ic_recv_action(ni, wh, frm, efrm);
1486 break;
1487 case IEEE80211_FC0_SUBTYPE_AUTH:
1488 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
1489 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ:
1490 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
1491 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
1492 case IEEE80211_FC0_SUBTYPE_DEAUTH:
1493 case IEEE80211_FC0_SUBTYPE_DISASSOC:
1494 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1495 wh, NULL, "%s", "not handled");
1496 vap->iv_stats.is_rx_mgtdiscard++;
1497 return;
1498 default:
1499 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
1500 wh, "mgt", "subtype 0x%x not handled", subtype);
1501 vap->iv_stats.is_rx_badsubtype++;
1502 break;
1503 }
1504}
1505
1506/*
1507 * Parse meshpeering action ie's for open+confirm frames; the
1508 * important bits are returned in the supplied structure.
1509 */
1510static const struct ieee80211_meshpeer_ie *
1511mesh_parse_meshpeering_action(struct ieee80211_node *ni,
1512 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */
1513 const uint8_t *frm, const uint8_t *efrm,
1514 struct ieee80211_meshpeer_ie *mp, uint8_t subtype)
1515{
1516 struct ieee80211vap *vap = ni->ni_vap;
1517 const struct ieee80211_meshpeer_ie *mpie;
1518 const uint8_t *meshid, *meshconf, *meshpeer;
1519
1520 meshid = meshconf = meshpeer = NULL;
1521 while (efrm - frm > 1) {
1522 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL);
1523 switch (*frm) {
1524 case IEEE80211_ELEMID_MESHID:
1525 meshid = frm;
1526 break;
1527 case IEEE80211_ELEMID_MESHCONF:
1528 meshconf = frm;
1529 break;
1530 case IEEE80211_ELEMID_MESHPEER:
1531 meshpeer = frm;
1532 mpie = (const struct ieee80211_meshpeer_ie *) frm;
1533 memset(mp, 0, sizeof(*mp));
1534 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid);
1535 /* NB: peer link ID is optional on these frames */
1536 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE &&
1537 mpie->peer_len == 8) {
1538 mp->peer_linkid = 0;
1539 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid);
1540 } else {
1541 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid);
1542 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode);
1543 }
1544 break;
1545 }
1546 frm += frm[1] + 2;
1547 }
1548
1549 /*
1550 * Verify the contents of the frame. Action frames with
1551 * close subtype don't have a Mesh Configuration IE.
1552 * If if fails validation, close the peer link.
1553 */
1554 KASSERT(meshpeer != NULL &&
1555 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE,
1556 ("parsing close action"));
1557
1558 if (mesh_verify_meshid(vap, meshid) ||
1559 mesh_verify_meshpeer(vap, subtype, meshpeer) ||
1560 mesh_verify_meshconf(vap, meshconf)) {
1561 uint16_t args[3];
1562
1563 IEEE80211_DISCARD(vap,
1564 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
1565 wh, NULL, "%s", "not for our mesh");
1566 vap->iv_stats.is_rx_mgtdiscard++;
1567 switch (ni->ni_mlstate) {
1568 case IEEE80211_NODE_MESH_IDLE:
1569 case IEEE80211_NODE_MESH_ESTABLISHED:
1570 case IEEE80211_NODE_MESH_HOLDING:
1571 /* ignore */
1572 break;
1573 case IEEE80211_NODE_MESH_OPENSNT:
1574 case IEEE80211_NODE_MESH_OPENRCV:
1575 case IEEE80211_NODE_MESH_CONFIRMRCV:
1576 args[0] = ni->ni_mlpid;
1577 args[1] = ni->ni_mllid;
1578 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1579 ieee80211_send_action(ni,
1580 IEEE80211_ACTION_CAT_MESHPEERING,
1581 IEEE80211_ACTION_MESHPEERING_CLOSE,
1582 args);
1583 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1584 mesh_peer_timeout_setup(ni);
1585 break;
1586 }
1587 return NULL;
1588 }
1589 return (const struct ieee80211_meshpeer_ie *) mp;
1590}
1591
1592static int
1593mesh_recv_action_meshpeering_open(struct ieee80211_node *ni,
1594 const struct ieee80211_frame *wh,
1595 const uint8_t *frm, const uint8_t *efrm)
1596{
1597 struct ieee80211vap *vap = ni->ni_vap;
1598 struct ieee80211_meshpeer_ie ie;
1599 const struct ieee80211_meshpeer_ie *meshpeer;
1600 uint16_t args[3];
1601
1602 /* +2+2 for action + code + capabilites */
1603 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie,
1604 IEEE80211_ACTION_MESHPEERING_OPEN);
1605 if (meshpeer == NULL) {
1606 return 0;
1607 }
1608
1609 /* XXX move up */
1610 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1611 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid);
1612
1613 switch (ni->ni_mlstate) {
1614 case IEEE80211_NODE_MESH_IDLE:
1615 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV);
1616 ni->ni_mllid = meshpeer->peer_llinkid;
1617 ni->ni_mlpid = mesh_generateid(vap);
1618 if (ni->ni_mlpid == 0)
1619 return 0; /* XXX */
1620 args[0] = ni->ni_mlpid;
1621 /* Announce we're open too... */
1622 ieee80211_send_action(ni,
1623 IEEE80211_ACTION_CAT_MESHPEERING,
1624 IEEE80211_ACTION_MESHPEERING_OPEN, args);
1625 /* ...and confirm the link. */
1626 args[0] = ni->ni_mlpid;
1627 args[1] = ni->ni_mllid;
1628 ieee80211_send_action(ni,
1629 IEEE80211_ACTION_CAT_MESHPEERING,
1630 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1631 args);
1632 mesh_peer_timeout_setup(ni);
1633 break;
1634 case IEEE80211_NODE_MESH_OPENRCV:
1635 /* Wrong Link ID */
1636 if (ni->ni_mllid != meshpeer->peer_llinkid) {
1637 args[0] = ni->ni_mllid;
1638 args[1] = ni->ni_mlpid;
1639 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1640 ieee80211_send_action(ni,
1641 IEEE80211_ACTION_CAT_MESHPEERING,
1642 IEEE80211_ACTION_MESHPEERING_CLOSE,
1643 args);
1644 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1645 mesh_peer_timeout_setup(ni);
1646 break;
1647 }
1648 /* Duplicate open, confirm again. */
1649 args[0] = ni->ni_mlpid;
1650 args[1] = ni->ni_mllid;
1651 ieee80211_send_action(ni,
1652 IEEE80211_ACTION_CAT_MESHPEERING,
1653 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1654 args);
1655 break;
1656 case IEEE80211_NODE_MESH_OPENSNT:
1657 ni->ni_mllid = meshpeer->peer_llinkid;
1658 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV);
1659 args[0] = ni->ni_mlpid;
1660 args[1] = ni->ni_mllid;
1661 ieee80211_send_action(ni,
1662 IEEE80211_ACTION_CAT_MESHPEERING,
1663 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1664 args);
1665 /* NB: don't setup/clear any timeout */
1666 break;
1667 case IEEE80211_NODE_MESH_CONFIRMRCV:
1668 if (ni->ni_mlpid != meshpeer->peer_linkid ||
1669 ni->ni_mllid != meshpeer->peer_llinkid) {
1670 args[0] = ni->ni_mlpid;
1671 args[1] = ni->ni_mllid;
1672 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1673 ieee80211_send_action(ni,
1674 IEEE80211_ACTION_CAT_MESHPEERING,
1675 IEEE80211_ACTION_MESHPEERING_CLOSE,
1676 args);
1677 mesh_linkchange(ni,
1678 IEEE80211_NODE_MESH_HOLDING);
1679 mesh_peer_timeout_setup(ni);
1680 break;
1681 }
1682 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED);
1683 ni->ni_mllid = meshpeer->peer_llinkid;
1684 args[0] = ni->ni_mlpid;
1685 args[1] = ni->ni_mllid;
1686 ieee80211_send_action(ni,
1687 IEEE80211_ACTION_CAT_MESHPEERING,
1688 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1689 args);
1690 mesh_peer_timeout_stop(ni);
1691 break;
1692 case IEEE80211_NODE_MESH_ESTABLISHED:
1693 if (ni->ni_mllid != meshpeer->peer_llinkid) {
1694 args[0] = ni->ni_mllid;
1695 args[1] = ni->ni_mlpid;
1696 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1697 ieee80211_send_action(ni,
1698 IEEE80211_ACTION_CAT_MESHPEERING,
1699 IEEE80211_ACTION_MESHPEERING_CLOSE,
1700 args);
1701 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1702 mesh_peer_timeout_setup(ni);
1703 break;
1704 }
1705 args[0] = ni->ni_mlpid;
1706 args[1] = ni->ni_mllid;
1707 ieee80211_send_action(ni,
1708 IEEE80211_ACTION_CAT_MESHPEERING,
1709 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1710 args);
1711 break;
1712 case IEEE80211_NODE_MESH_HOLDING:
1713 args[0] = ni->ni_mlpid;
1714 args[1] = meshpeer->peer_llinkid;
1715 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
1716 ieee80211_send_action(ni,
1717 IEEE80211_ACTION_CAT_MESHPEERING,
1718 IEEE80211_ACTION_MESHPEERING_CLOSE,
1719 args);
1720 break;
1721 }
1722 return 0;
1723}
1724
1725static int
1726mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni,
1727 const struct ieee80211_frame *wh,
1728 const uint8_t *frm, const uint8_t *efrm)
1729{
1730 struct ieee80211vap *vap = ni->ni_vap;
1731 struct ieee80211_meshpeer_ie ie;
1732 const struct ieee80211_meshpeer_ie *meshpeer;
1733 uint16_t args[3];
1734
1735 /* +2+2+2+2 for action + code + capabilites + status code + AID */
1736 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie,
1737 IEEE80211_ACTION_MESHPEERING_CONFIRM);
1738 if (meshpeer == NULL) {
1739 return 0;
1740 }
1741
1742 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1743 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x",
1744 meshpeer->peer_llinkid, meshpeer->peer_linkid);
1745
1746 switch (ni->ni_mlstate) {
1747 case IEEE80211_NODE_MESH_OPENRCV:
1748 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED);
1749 mesh_peer_timeout_stop(ni);
1750 break;
1751 case IEEE80211_NODE_MESH_OPENSNT:
1752 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV);
1753 break;
1754 case IEEE80211_NODE_MESH_HOLDING:
1755 args[0] = ni->ni_mlpid;
1756 args[1] = meshpeer->peer_llinkid;
1757 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
1758 ieee80211_send_action(ni,
1759 IEEE80211_ACTION_CAT_MESHPEERING,
1760 IEEE80211_ACTION_MESHPEERING_CLOSE,
1761 args);
1762 break;
1763 case IEEE80211_NODE_MESH_CONFIRMRCV:
1764 if (ni->ni_mllid != meshpeer->peer_llinkid) {
1765 args[0] = ni->ni_mlpid;
1766 args[1] = ni->ni_mllid;
1767 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1768 ieee80211_send_action(ni,
1769 IEEE80211_ACTION_CAT_MESHPEERING,
1770 IEEE80211_ACTION_MESHPEERING_CLOSE,
1771 args);
1772 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1773 mesh_peer_timeout_setup(ni);
1774 }
1775 break;
1776 default:
1777 IEEE80211_DISCARD(vap,
1778 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
1779 wh, NULL, "received confirm in invalid state %d",
1780 ni->ni_mlstate);
1781 vap->iv_stats.is_rx_mgtdiscard++;
1782 break;
1783 }
1784 return 0;
1785}
1786
1787static int
1788mesh_recv_action_meshpeering_close(struct ieee80211_node *ni,
1789 const struct ieee80211_frame *wh,
1790 const uint8_t *frm, const uint8_t *efrm)
1791{
1792 uint16_t args[3];
1793
1794 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
1795 ni, "%s", "recv PEER CLOSE");
1796
1797 switch (ni->ni_mlstate) {
1798 case IEEE80211_NODE_MESH_IDLE:
1799 /* ignore */
1800 break;
1801 case IEEE80211_NODE_MESH_OPENRCV:
1802 case IEEE80211_NODE_MESH_OPENSNT:
1803 case IEEE80211_NODE_MESH_CONFIRMRCV:
1804 case IEEE80211_NODE_MESH_ESTABLISHED:
1805 args[0] = ni->ni_mlpid;
1806 args[1] = ni->ni_mllid;
1807 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD;
1808 ieee80211_send_action(ni,
1809 IEEE80211_ACTION_CAT_MESHPEERING,
1810 IEEE80211_ACTION_MESHPEERING_CLOSE,
1811 args);
1812 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1813 mesh_peer_timeout_setup(ni);
1814 break;
1815 case IEEE80211_NODE_MESH_HOLDING:
1816 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE);
1817 mesh_peer_timeout_setup(ni);
1818 break;
1819 }
1820 return 0;
1821}
1822
1823/*
1824 * Link Metric handling.
1825 */
1826static int
1827mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni,
1828 const struct ieee80211_frame *wh,
1829 const uint8_t *frm, const uint8_t *efrm)
1830{
1831 uint32_t metric;
1832
1833 metric = mesh_airtime_calc(ni);
1834 ieee80211_send_action(ni,
1835 IEEE80211_ACTION_CAT_MESHLMETRIC,
1836 IEEE80211_ACTION_MESHLMETRIC_REP,
1837 &metric);
1838 return 0;
1839}
1840
1841static int
1842mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni,
1843 const struct ieee80211_frame *wh,
1844 const uint8_t *frm, const uint8_t *efrm)
1845{
1846 return 0;
1847}
1848
1849static int
1850mesh_send_action(struct ieee80211_node *ni, struct mbuf *m)
1851{
1852 struct ieee80211_bpf_params params;
1853
1854 memset(&params, 0, sizeof(params));
1855 params.ibp_pri = WME_AC_VO;
1856 params.ibp_rate0 = ni->ni_txparms->mgmtrate;
1857 /* XXX ucast/mcast */
1858 params.ibp_try0 = ni->ni_txparms->maxretry;
1859 params.ibp_power = ni->ni_txpower;
1860 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION,
1861 &params);
1862}
1863
1864#define ADDSHORT(frm, v) do { \
1865 frm[0] = (v) & 0xff; \
1866 frm[1] = (v) >> 8; \
1867 frm += 2; \
1868} while (0)
1869#define ADDWORD(frm, v) do { \
1870 frm[0] = (v) & 0xff; \
1871 frm[1] = ((v) >> 8) & 0xff; \
1872 frm[2] = ((v) >> 16) & 0xff; \
1873 frm[3] = ((v) >> 24) & 0xff; \
1874 frm += 4; \
1875} while (0)
1876
1877static int
1878mesh_send_action_meshpeering_open(struct ieee80211_node *ni,
1879 int category, int action, void *args0)
1880{
1881 struct ieee80211vap *vap = ni->ni_vap;
1882 struct ieee80211com *ic = ni->ni_ic;
1883 uint16_t *args = args0;
1884 const struct ieee80211_rateset *rs;
1885 struct mbuf *m;
1886 uint8_t *frm;
1887
1888 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1889 "send PEER OPEN action: localid 0x%x", args[0]);
1890
1891 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
6168f72e
RP
1892 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__,
1893 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1);
32176cfd
RP
1894 ieee80211_ref_node(ni);
1895
1896 m = ieee80211_getmgtframe(&frm,
1897 ic->ic_headroom + sizeof(struct ieee80211_frame),
1898 sizeof(uint16_t) /* action+category */
1899 + sizeof(uint16_t) /* capabilites */
1900 + 2 + IEEE80211_RATE_SIZE
1901 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE)
1902 + 2 + IEEE80211_MESHID_LEN
1903 + sizeof(struct ieee80211_meshconf_ie)
1904 + sizeof(struct ieee80211_meshpeer_ie)
1905 );
1906 if (m != NULL) {
1907 /*
1908 * mesh peer open action frame format:
1909 * [1] category
1910 * [1] action
1911 * [2] capabilities
1912 * [tlv] rates
1913 * [tlv] xrates
1914 * [tlv] mesh id
1915 * [tlv] mesh conf
1916 * [tlv] mesh peer link mgmt
1917 */
1918 *frm++ = category;
1919 *frm++ = action;
1920 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan));
1921 rs = ieee80211_get_suprates(ic, ic->ic_curchan);
1922 frm = ieee80211_add_rates(frm, rs);
1923 frm = ieee80211_add_xrates(frm, rs);
1924 frm = ieee80211_add_meshid(frm, vap);
1925 frm = ieee80211_add_meshconf(frm, vap);
1926 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN,
1927 args[0], 0, 0);
1928 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
1929 return mesh_send_action(ni, m);
1930 } else {
1931 vap->iv_stats.is_tx_nobuf++;
1932 ieee80211_free_node(ni);
1933 return ENOMEM;
1934 }
1935}
1936
1937static int
1938mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni,
1939 int category, int action, void *args0)
1940{
1941 struct ieee80211vap *vap = ni->ni_vap;
1942 struct ieee80211com *ic = ni->ni_ic;
1943 uint16_t *args = args0;
1944 const struct ieee80211_rateset *rs;
1945 struct mbuf *m;
1946 uint8_t *frm;
1947
1948 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1949 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x",
1950 args[0], args[1]);
1951
1952 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
6168f72e
RP
1953 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__,
1954 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1);
32176cfd
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1955 ieee80211_ref_node(ni);
1956
1957 m = ieee80211_getmgtframe(&frm,
1958 ic->ic_headroom + sizeof(struct ieee80211_frame),
1959 sizeof(uint16_t) /* action+category */
1960 + sizeof(uint16_t) /* capabilites */
1961 + sizeof(uint16_t) /* status code */
1962 + sizeof(uint16_t) /* AID */
1963 + 2 + IEEE80211_RATE_SIZE
1964 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE)
1965 + 2 + IEEE80211_MESHID_LEN
1966 + sizeof(struct ieee80211_meshconf_ie)
1967 + sizeof(struct ieee80211_meshpeer_ie)
1968 );
1969 if (m != NULL) {
1970 /*
1971 * mesh peer confirm action frame format:
1972 * [1] category
1973 * [1] action
1974 * [2] capabilities
1975 * [2] status code
1976 * [2] association id (peer ID)
1977 * [tlv] rates
1978 * [tlv] xrates
1979 * [tlv] mesh id
1980 * [tlv] mesh conf
1981 * [tlv] mesh peer link mgmt
1982 */
1983 *frm++ = category;
1984 *frm++ = action;
1985 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan));
1986 ADDSHORT(frm, 0); /* status code */
1987 ADDSHORT(frm, args[1]); /* AID */
1988 rs = ieee80211_get_suprates(ic, ic->ic_curchan);
1989 frm = ieee80211_add_rates(frm, rs);
1990 frm = ieee80211_add_xrates(frm, rs);
1991 frm = ieee80211_add_meshid(frm, vap);
1992 frm = ieee80211_add_meshconf(frm, vap);
1993 frm = ieee80211_add_meshpeer(frm,
1994 IEEE80211_MESH_PEER_LINK_CONFIRM,
1995 args[0], args[1], 0);
1996 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
1997 return mesh_send_action(ni, m);
1998 } else {
1999 vap->iv_stats.is_tx_nobuf++;
2000 ieee80211_free_node(ni);
2001 return ENOMEM;
2002 }
2003}
2004
2005static int
2006mesh_send_action_meshpeering_close(struct ieee80211_node *ni,
2007 int category, int action, void *args0)
2008{
2009 struct ieee80211vap *vap = ni->ni_vap;
2010 struct ieee80211com *ic = ni->ni_ic;
2011 uint16_t *args = args0;
2012 struct mbuf *m;
2013 uint8_t *frm;
2014
2015 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
2016 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d",
2017 args[0], args[1], args[2]);
2018
2019 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
6168f72e 2020 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__,
7bfcf376 2021 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1);
32176cfd
RP
2022 ieee80211_ref_node(ni);
2023
2024 m = ieee80211_getmgtframe(&frm,
2025 ic->ic_headroom + sizeof(struct ieee80211_frame),
2026 sizeof(uint16_t) /* action+category */
2027 + sizeof(uint16_t) /* reason code */
2028 + 2 + IEEE80211_MESHID_LEN
2029 + sizeof(struct ieee80211_meshpeer_ie)
2030 );
2031 if (m != NULL) {
2032 /*
2033 * mesh peer close action frame format:
2034 * [1] category
2035 * [1] action
2036 * [2] reason code
2037 * [tlv] mesh id
2038 * [tlv] mesh peer link mgmt
2039 */
2040 *frm++ = category;
2041 *frm++ = action;
2042 ADDSHORT(frm, args[2]); /* reason code */
2043 frm = ieee80211_add_meshid(frm, vap);
2044 frm = ieee80211_add_meshpeer(frm,
2045 IEEE80211_MESH_PEER_LINK_CLOSE,
2046 args[0], args[1], args[2]);
2047 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
2048 return mesh_send_action(ni, m);
2049 } else {
2050 vap->iv_stats.is_tx_nobuf++;
2051 ieee80211_free_node(ni);
2052 return ENOMEM;
2053 }
2054}
2055
2056static int
2057mesh_send_action_meshlink_request(struct ieee80211_node *ni,
2058 int category, int action, void *arg0)
2059{
2060 struct ieee80211vap *vap = ni->ni_vap;
2061 struct ieee80211com *ic = ni->ni_ic;
2062 struct mbuf *m;
2063 uint8_t *frm;
2064
2065 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
2066 "%s", "send LINK METRIC REQUEST action");
2067
2068 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
6168f72e
RP
2069 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__,
2070 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1);
32176cfd
RP
2071 ieee80211_ref_node(ni);
2072
2073 m = ieee80211_getmgtframe(&frm,
2074 ic->ic_headroom + sizeof(struct ieee80211_frame),
2075 sizeof(uint16_t) /* action+category */
2076 );
2077 if (m != NULL) {
2078 /*
2079 * mesh link metric request
2080 * [1] category
2081 * [1] action
2082 */
2083 *frm++ = category;
2084 *frm++ = action;
2085 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
2086 return mesh_send_action(ni, m);
2087 } else {
2088 vap->iv_stats.is_tx_nobuf++;
2089 ieee80211_free_node(ni);
2090 return ENOMEM;
2091 }
2092}
2093
2094static int
2095mesh_send_action_meshlink_reply(struct ieee80211_node *ni,
2096 int category, int action, void *args0)
2097{
2098 struct ieee80211vap *vap = ni->ni_vap;
2099 struct ieee80211com *ic = ni->ni_ic;
2100 uint32_t *metric = args0;
2101 struct mbuf *m;
2102 uint8_t *frm;
2103
2104 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
2105 "send LINK METRIC REPLY action: metric 0x%x", *metric);
2106
2107 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
6168f72e
RP
2108 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__,
2109 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1);
32176cfd
RP
2110 ieee80211_ref_node(ni);
2111
2112 m = ieee80211_getmgtframe(&frm,
2113 ic->ic_headroom + sizeof(struct ieee80211_frame),
2114 sizeof(uint16_t) /* action+category */
2115 + sizeof(struct ieee80211_meshlmetric_ie)
2116 );
2117 if (m != NULL) {
2118 /*
2119 * mesh link metric reply
2120 * [1] category
2121 * [1] action
2122 * [tlv] mesh link metric
2123 */
2124 *frm++ = category;
2125 *frm++ = action;
2126 frm = ieee80211_add_meshlmetric(frm, *metric);
2127 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
2128 return mesh_send_action(ni, m);
2129 } else {
2130 vap->iv_stats.is_tx_nobuf++;
2131 ieee80211_free_node(ni);
2132 return ENOMEM;
2133 }
2134}
2135
2136static void
2137mesh_peer_timeout_setup(struct ieee80211_node *ni)
2138{
2139 switch (ni->ni_mlstate) {
2140 case IEEE80211_NODE_MESH_HOLDING:
2141 ni->ni_mltval = ieee80211_mesh_holdingtimeout;
2142 break;
2143 case IEEE80211_NODE_MESH_CONFIRMRCV:
2144 ni->ni_mltval = ieee80211_mesh_confirmtimeout;
2145 break;
2146 case IEEE80211_NODE_MESH_IDLE:
2147 ni->ni_mltval = 0;
2148 break;
2149 default:
2150 ni->ni_mltval = ieee80211_mesh_retrytimeout;
2151 break;
2152 }
47156d48 2153 if (ni->ni_mltval) {
32176cfd 2154 callout_reset(&ni->ni_mltimer, ni->ni_mltval,
47156d48
MD
2155 mesh_peer_timeout_callout, ni);
2156 }
32176cfd
RP
2157}
2158
2159/*
2160 * Same as above but backoffs timer statisically 50%.
2161 */
2162static void
2163mesh_peer_timeout_backoff(struct ieee80211_node *ni)
2164{
2165 uint32_t r;
2166
2167 r = karc4random();
2168 ni->ni_mltval += r % ni->ni_mltval;
47156d48
MD
2169 callout_reset(&ni->ni_mltimer, ni->ni_mltval,
2170 mesh_peer_timeout_callout, ni);
32176cfd
RP
2171}
2172
2173static __inline void
2174mesh_peer_timeout_stop(struct ieee80211_node *ni)
2175{
dfcf81fd 2176 callout_stop(&ni->ni_mltimer);
32176cfd
RP
2177}
2178
2179/*
2180 * Mesh Peer Link Management FSM timeout handling.
2181 */
2182static void
47156d48 2183mesh_peer_timeout_callout(void *arg)
32176cfd
RP
2184{
2185 struct ieee80211_node *ni = (struct ieee80211_node *)arg;
2186 uint16_t args[3];
2187
47156d48 2188 wlan_serialize_enter();
32176cfd
RP
2189 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH,
2190 ni, "mesh link timeout, state %d, retry counter %d",
2191 ni->ni_mlstate, ni->ni_mlrcnt);
2192
2193 switch (ni->ni_mlstate) {
2194 case IEEE80211_NODE_MESH_IDLE:
2195 case IEEE80211_NODE_MESH_ESTABLISHED:
2196 break;
2197 case IEEE80211_NODE_MESH_OPENSNT:
2198 case IEEE80211_NODE_MESH_OPENRCV:
2199 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) {
2200 args[0] = ni->ni_mlpid;
2201 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
2202 ieee80211_send_action(ni,
2203 IEEE80211_ACTION_CAT_MESHPEERING,
2204 IEEE80211_ACTION_MESHPEERING_CLOSE, args);
2205 ni->ni_mlrcnt = 0;
2206 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
2207 mesh_peer_timeout_setup(ni);
2208 } else {
2209 args[0] = ni->ni_mlpid;
2210 ieee80211_send_action(ni,
2211 IEEE80211_ACTION_CAT_MESHPEERING,
2212 IEEE80211_ACTION_MESHPEERING_OPEN, args);
2213 ni->ni_mlrcnt++;
2214 mesh_peer_timeout_backoff(ni);
2215 }
2216 break;
2217 case IEEE80211_NODE_MESH_CONFIRMRCV:
2218 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) {
2219 args[0] = ni->ni_mlpid;
2220 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT;
2221 ieee80211_send_action(ni,
2222 IEEE80211_ACTION_CAT_MESHPEERING,
2223 IEEE80211_ACTION_MESHPEERING_CLOSE, args);
2224 ni->ni_mlrcnt = 0;
2225 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
2226 mesh_peer_timeout_setup(ni);
2227 } else {
2228 ni->ni_mlrcnt++;
2229 mesh_peer_timeout_setup(ni);
2230 }
2231 break;
2232 case IEEE80211_NODE_MESH_HOLDING:
2233 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE);
2234 break;
2235 }
47156d48 2236 wlan_serialize_exit();
32176cfd
RP
2237}
2238
2239static int
2240mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie)
2241{
2242 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2243
2244 if (ie == NULL || ie[1] != ms->ms_idlen)
2245 return 1;
2246 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen);
2247}
2248
2249/*
2250 * Check if we are using the same algorithms for this mesh.
2251 */
2252static int
2253mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie)
2254{
2255 const struct ieee80211_meshconf_ie *meshconf =
2256 (const struct ieee80211_meshconf_ie *) ie;
2257 const struct ieee80211_mesh_state *ms = vap->iv_mesh;
2258 uint16_t cap;
2259
2260 if (meshconf == NULL)
2261 return 1;
2262 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) {
2263 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2264 "unknown path selection algorithm: 0x%x\n",
2265 meshconf->conf_pselid);
2266 return 1;
2267 }
2268 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) {
2269 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2270 "unknown path metric algorithm: 0x%x\n",
2271 meshconf->conf_pmetid);
2272 return 1;
2273 }
2274 if (meshconf->conf_ccid != 0) {
2275 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2276 "unknown congestion control algorithm: 0x%x\n",
2277 meshconf->conf_ccid);
2278 return 1;
2279 }
2280 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) {
2281 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2282 "unknown sync algorithm: 0x%x\n",
2283 meshconf->conf_syncid);
2284 return 1;
2285 }
2286 if (meshconf->conf_authid != 0) {
2287 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
5a8df152 2288 "unknown auth algorithm: 0x%x\n",
32176cfd
RP
2289 meshconf->conf_pselid);
2290 return 1;
2291 }
2292 /* NB: conf_cap is only read correctly here */
2293 cap = LE_READ_2(&meshconf->conf_cap);
2294 /* Not accepting peers */
2295 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) {
2296 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2297 "not accepting peers: 0x%x\n", meshconf->conf_cap);
2298 return 1;
2299 }
2300 return 0;
2301}
2302
2303static int
2304mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype,
2305 const uint8_t *ie)
2306{
2307 const struct ieee80211_meshpeer_ie *meshpeer =
2308 (const struct ieee80211_meshpeer_ie *) ie;
2309
2310 if (meshpeer == NULL || meshpeer->peer_len < 6 ||
2311 meshpeer->peer_len > 10)
2312 return 1;
2313 switch (subtype) {
2314 case IEEE80211_MESH_PEER_LINK_OPEN:
2315 if (meshpeer->peer_len != 6)
2316 return 1;
2317 break;
2318 case IEEE80211_MESH_PEER_LINK_CONFIRM:
2319 if (meshpeer->peer_len != 8)
2320 return 1;
2321 break;
2322 case IEEE80211_MESH_PEER_LINK_CLOSE:
2323 if (meshpeer->peer_len < 8)
2324 return 1;
2325 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0)
2326 return 1;
2327 if (meshpeer->peer_rcode == 0)
2328 return 1;
2329 break;
2330 }
2331 return 0;
2332}
2333
2334/*
2335 * Add a Mesh ID IE to a frame.
2336 */
2337uint8_t *
2338ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap)
2339{
2340 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2341
2342 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap"));
2343
2344 *frm++ = IEEE80211_ELEMID_MESHID;
2345 *frm++ = ms->ms_idlen;
2346 memcpy(frm, ms->ms_id, ms->ms_idlen);
2347 return frm + ms->ms_idlen;
2348}
2349
2350/*
2351 * Add a Mesh Configuration IE to a frame.
2352 * For now just use HWMP routing, Airtime link metric, Null Congestion
2353 * Signaling, Null Sync Protocol and Null Authentication.
2354 */
2355uint8_t *
2356ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap)
2357{
2358 const struct ieee80211_mesh_state *ms = vap->iv_mesh;
2359 uint16_t caps;
2360
2361 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap"));
2362
2363 *frm++ = IEEE80211_ELEMID_MESHCONF;
2364 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2;
2365 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */
2366 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */
2367 *frm++ = IEEE80211_MESHCONF_CC_DISABLED;
2368 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF;
2369 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED;
2370 /* NB: set the number of neighbors before the rest */
2371 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1;
2372 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL)
2373 *frm |= IEEE80211_MESHCONF_FORM_MP;
2374 frm += 1;
2375 caps = 0;
2376 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP)
2377 caps |= IEEE80211_MESHCONF_CAP_AP;
2378 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD)
2379 caps |= IEEE80211_MESHCONF_CAP_FWRD;
2380 ADDSHORT(frm, caps);
2381 return frm;
2382}
2383
2384/*
2385 * Add a Mesh Peer Management IE to a frame.
2386 */
2387uint8_t *
2388ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid,
2389 uint16_t peerid, uint16_t reason)
2390{
2391 /* XXX change for AH */
2392 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO;
2393
2394 KASSERT(localid != 0, ("localid == 0"));
2395
2396 *frm++ = IEEE80211_ELEMID_MESHPEER;
2397 switch (subtype) {
2398 case IEEE80211_MESH_PEER_LINK_OPEN:
2399 *frm++ = 6; /* length */
2400 memcpy(frm, meshpeerproto, 4);
2401 frm += 4;
2402 ADDSHORT(frm, localid); /* local ID */
2403 break;
2404 case IEEE80211_MESH_PEER_LINK_CONFIRM:
2405 KASSERT(peerid != 0, ("sending peer confirm without peer id"));
2406 *frm++ = 8; /* length */
2407 memcpy(frm, meshpeerproto, 4);
2408 frm += 4;
2409 ADDSHORT(frm, localid); /* local ID */
2410 ADDSHORT(frm, peerid); /* peer ID */
2411 break;
2412 case IEEE80211_MESH_PEER_LINK_CLOSE:
2413 if (peerid)
2414 *frm++ = 10; /* length */
2415 else
2416 *frm++ = 8; /* length */
2417 memcpy(frm, meshpeerproto, 4);
2418 frm += 4;
2419 ADDSHORT(frm, localid); /* local ID */
2420 if (peerid)
2421 ADDSHORT(frm, peerid); /* peer ID */
2422 ADDSHORT(frm, reason);
2423 break;
2424 }
2425 return frm;
2426}
2427
2428/*
2429 * Compute an Airtime Link Metric for the link with this node.
2430 *
2431 * Based on Draft 3.0 spec (11B.10, p.149).
2432 */
2433/*
2434 * Max 802.11s overhead.
2435 */
2436#define IEEE80211_MESH_MAXOVERHEAD \
2437 (sizeof(struct ieee80211_qosframe_addr4) \
2438 + sizeof(struct ieee80211_meshcntl_ae11) \
2439 + sizeof(struct llc) \
2440 + IEEE80211_ADDR_LEN \
2441 + IEEE80211_WEP_IVLEN \
2442 + IEEE80211_WEP_KIDLEN \
2443 + IEEE80211_WEP_CRCLEN \
2444 + IEEE80211_WEP_MICLEN \
2445 + IEEE80211_CRC_LEN)
2446uint32_t
2447mesh_airtime_calc(struct ieee80211_node *ni)
2448{
2449#define M_BITS 8
2450#define S_FACTOR (2 * M_BITS)
2451 struct ieee80211com *ic = ni->ni_ic;
2452 struct ifnet *ifp = ni->ni_vap->iv_ifp;
db11cb20 2453 static const int nbits = 8192 << M_BITS;
32176cfd
RP
2454 uint32_t overhead, rate, errrate;
2455 uint64_t res;
2456
2457 /* Time to transmit a frame */
2458 rate = ni->ni_txrate;
2459 overhead = ieee80211_compute_duration(ic->ic_rt,
2460 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS;
2461 /* Error rate in percentage */
2462 /* XXX assuming small failures are ok */
2463 errrate = (((ifp->if_oerrors +
2464 ifp->if_ierrors) / 100) << M_BITS) / 100;
2465 res = (overhead + (nbits / rate)) *
2466 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate));
2467
2468 return (uint32_t)(res >> S_FACTOR);
2469#undef M_BITS
2470#undef S_FACTOR
2471}
2472
2473/*
2474 * Add a Mesh Link Metric report IE to a frame.
2475 */
2476uint8_t *
2477ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric)
2478{
2479 *frm++ = IEEE80211_ELEMID_MESHLINK;
2480 *frm++ = 4;
2481 ADDWORD(frm, metric);
2482 return frm;
2483}
2484#undef ADDSHORT
2485#undef ADDWORD
2486
2487/*
2488 * Initialize any mesh-specific node state.
2489 */
2490void
2491ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni)
2492{
2493 ni->ni_flags |= IEEE80211_NODE_QOS;
34a60cf6 2494 callout_init_mp(&ni->ni_mltimer);
32176cfd
RP
2495}
2496
2497/*
2498 * Cleanup any mesh-specific node state.
2499 */
2500void
2501ieee80211_mesh_node_cleanup(struct ieee80211_node *ni)
2502{
2503 struct ieee80211vap *vap = ni->ni_vap;
2504 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2505
dfcf81fd 2506 callout_stop(&ni->ni_mltimer);
32176cfd
RP
2507 /* NB: short-circuit callbacks after mesh_vdetach */
2508 if (vap->iv_mesh != NULL)
2509 ms->ms_ppath->mpp_peerdown(ni);
2510}
2511
2512void
2513ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie)
2514{
2515 ni->ni_meshidlen = ie[1];
2516 memcpy(ni->ni_meshid, ie + 2, ie[1]);
2517}
2518
2519/*
2520 * Setup mesh-specific node state on neighbor discovery.
2521 */
2522void
2523ieee80211_mesh_init_neighbor(struct ieee80211_node *ni,
2524 const struct ieee80211_frame *wh,
2525 const struct ieee80211_scanparams *sp)
2526{
2527 ieee80211_parse_meshid(ni, sp->meshid);
2528}
2529
2530void
2531ieee80211_mesh_update_beacon(struct ieee80211vap *vap,
2532 struct ieee80211_beacon_offsets *bo)
2533{
2534 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap"));
2535
2536 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) {
2537 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap);
2538 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF);
2539 }
2540}
2541
2542static int
2543mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
2544{
2545 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2546 uint8_t tmpmeshid[IEEE80211_NWID_LEN];
2547 struct ieee80211_mesh_route *rt;
2548 struct ieee80211req_mesh_route *imr;
2549 size_t len, off;
2550 uint8_t *p;
2551 int error;
2552
2553 if (vap->iv_opmode != IEEE80211_M_MBSS)
2554 return ENOSYS;
2555
2556 error = 0;
2557 switch (ireq->i_type) {
2558 case IEEE80211_IOC_MESH_ID:
2559 ireq->i_len = ms->ms_idlen;
2560 memcpy(tmpmeshid, ms->ms_id, ireq->i_len);
2561 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len);
2562 break;
2563 case IEEE80211_IOC_MESH_AP:
2564 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0;
2565 break;
2566 case IEEE80211_IOC_MESH_FWRD:
2567 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0;
2568 break;
2569 case IEEE80211_IOC_MESH_TTL:
2570 ireq->i_val = ms->ms_ttl;
2571 break;
2572 case IEEE80211_IOC_MESH_RTCMD:
2573 switch (ireq->i_val) {
2574 case IEEE80211_MESH_RTCMD_LIST:
2575 len = 0;
32176cfd
RP
2576 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
2577 len += sizeof(*imr);
2578 }
32176cfd
RP
2579 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) {
2580 ireq->i_len = len;
2581 return ENOMEM;
2582 }
2583 ireq->i_len = len;
2584 /* XXX M_WAIT? */
fcaa651d 2585 p = kmalloc(len, M_TEMP, M_INTWAIT | M_ZERO);
32176cfd
RP
2586 if (p == NULL)
2587 return ENOMEM;
2588 off = 0;
32176cfd
RP
2589 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
2590 if (off >= len)
2591 break;
2592 imr = (struct ieee80211req_mesh_route *)
2593 (p + off);
2594 imr->imr_flags = rt->rt_flags;
2595 IEEE80211_ADDR_COPY(imr->imr_dest,
2596 rt->rt_dest);
2597 IEEE80211_ADDR_COPY(imr->imr_nexthop,
2598 rt->rt_nexthop);
2599 imr->imr_metric = rt->rt_metric;
2600 imr->imr_nhops = rt->rt_nhops;
2601 imr->imr_lifetime = rt->rt_lifetime;
2602 imr->imr_lastmseq = rt->rt_lastmseq;
2603 off += sizeof(*imr);
2604 }
32176cfd
RP
2605 error = copyout(p, (uint8_t *)ireq->i_data,
2606 ireq->i_len);
2607 kfree(p, M_TEMP);
2608 break;
2609 case IEEE80211_MESH_RTCMD_FLUSH:
2610 case IEEE80211_MESH_RTCMD_ADD:
2611 case IEEE80211_MESH_RTCMD_DELETE:
2612 return EINVAL;
2613 default:
2614 return ENOSYS;
2615 }
2616 break;
2617 case IEEE80211_IOC_MESH_PR_METRIC:
2618 len = strlen(ms->ms_pmetric->mpm_descr);
2619 if (ireq->i_len < len)
2620 return EINVAL;
2621 ireq->i_len = len;
2622 error = copyout(ms->ms_pmetric->mpm_descr,
2623 (uint8_t *)ireq->i_data, len);
2624 break;
2625 case IEEE80211_IOC_MESH_PR_PATH:
2626 len = strlen(ms->ms_ppath->mpp_descr);
2627 if (ireq->i_len < len)
2628 return EINVAL;
2629 ireq->i_len = len;
2630 error = copyout(ms->ms_ppath->mpp_descr,
2631 (uint8_t *)ireq->i_data, len);
2632 break;
2633 default:
2634 return ENOSYS;
2635 }
2636
2637 return error;
2638}
2639IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211);
2640
2641static int
2642mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
2643{
2644 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2645 uint8_t tmpmeshid[IEEE80211_NWID_LEN];
2646 uint8_t tmpaddr[IEEE80211_ADDR_LEN];
2647 char tmpproto[IEEE80211_MESH_PROTO_DSZ];
2648 int error;
2649
2650 if (vap->iv_opmode != IEEE80211_M_MBSS)
2651 return ENOSYS;
2652
2653 error = 0;
2654 switch (ireq->i_type) {
2655 case IEEE80211_IOC_MESH_ID:
2656 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN)
2657 return EINVAL;
2658 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len);
2659 if (error != 0)
2660 break;
2661 memset(ms->ms_id, 0, IEEE80211_NWID_LEN);
2662 ms->ms_idlen = ireq->i_len;
2663 memcpy(ms->ms_id, tmpmeshid, ireq->i_len);
2664 error = ENETRESET;
2665 break;
2666 case IEEE80211_IOC_MESH_AP:
2667 if (ireq->i_val)
2668 ms->ms_flags |= IEEE80211_MESHFLAGS_AP;
2669 else
2670 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP;
2671 error = ENETRESET;
2672 break;
2673 case IEEE80211_IOC_MESH_FWRD:
2674 if (ireq->i_val)
2675 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD;
2676 else
2677 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD;
2678 break;
2679 case IEEE80211_IOC_MESH_TTL:
2680 ms->ms_ttl = (uint8_t) ireq->i_val;
2681 break;
2682 case IEEE80211_IOC_MESH_RTCMD:
2683 switch (ireq->i_val) {
2684 case IEEE80211_MESH_RTCMD_LIST:
2685 return EINVAL;
2686 case IEEE80211_MESH_RTCMD_FLUSH:
2687 ieee80211_mesh_rt_flush(vap);
2688 break;
2689 case IEEE80211_MESH_RTCMD_ADD:
2690 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) ||
2691 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data))
2692 return EINVAL;
2693 error = copyin(ireq->i_data, &tmpaddr,
2694 IEEE80211_ADDR_LEN);
2695 if (error == 0)
2696 ieee80211_mesh_discover(vap, tmpaddr, NULL);
2697 break;
2698 case IEEE80211_MESH_RTCMD_DELETE:
2699 ieee80211_mesh_rt_del(vap, ireq->i_data);
2700 break;
2701 default:
2702 return ENOSYS;
2703 }
2704 break;
2705 case IEEE80211_IOC_MESH_PR_METRIC:
2706 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto));
2707 if (error == 0) {
2708 error = mesh_select_proto_metric(vap, tmpproto);
2709 if (error == 0)
2710 error = ENETRESET;
2711 }
2712 break;
2713 case IEEE80211_IOC_MESH_PR_PATH:
2714 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto));
2715 if (error == 0) {
2716 error = mesh_select_proto_path(vap, tmpproto);
2717 if (error == 0)
2718 error = ENETRESET;
2719 }
2720 break;
2721 default:
2722 return ENOSYS;
2723 }
2724 return error;
2725}
2726IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211);