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 #include <sys/cdefs.h>
30 #ifdef __FreeBSD__
31 __FBSDID("$FreeBSD: releng/8.0/sys/net80211/ieee80211_mesh.c 198188 2009-10-17 13:42:23Z rpaulo $");
32 #endif
33
34 /*
35 * IEEE 802.11s Mesh Point (MBSS) support.
36 *
37 * Based on March 2009, D3.0 802.11s draft spec.
38 */
39 #include "opt_inet.h"
40 #include "opt_wlan.h"
41
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/mbuf.h>
45 #include <sys/malloc.h>
46 #include <sys/kernel.h>
47
48 #include <sys/socket.h>
49 #include <sys/sockio.h>
50 #include <sys/endian.h>
51 #include <sys/errno.h>
52 #include <sys/proc.h>
53 #include <sys/sysctl.h>
54
55 #include <net/if.h>
56 #include <net/if_media.h>
57 #include <net/if_llc.h>
58 #include <net/ethernet.h>
59
60 #include <net80211/ieee80211_var.h>
61 #include <net80211/ieee80211_action.h>
62 #include <net80211/ieee80211_input.h>
63 #include <net80211/ieee80211_mesh.h>
64
65 static void mesh_rt_flush_invalid(struct ieee80211vap *);
66 static int mesh_select_proto_path(struct ieee80211vap *, const char *);
67 static int mesh_select_proto_metric(struct ieee80211vap *, const char *);
68 static void mesh_vattach(struct ieee80211vap *);
69 static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int);
70 static void mesh_rt_cleanup_cb(void *);
71 static void mesh_linkchange(struct ieee80211_node *,
72 enum ieee80211_mesh_mlstate);
73 static void mesh_checkid(void *, struct ieee80211_node *);
74 static uint32_t mesh_generateid(struct ieee80211vap *);
75 static int mesh_checkpseq(struct ieee80211vap *,
76 const uint8_t [IEEE80211_ADDR_LEN], uint32_t);
77 static struct ieee80211_node *
78 mesh_find_txnode(struct ieee80211vap *,
79 const uint8_t [IEEE80211_ADDR_LEN]);
80 static void mesh_forward(struct ieee80211vap *, struct mbuf *,
81 const struct ieee80211_meshcntl *);
82 static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int);
83 static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int,
84 int, int);
85 static void mesh_peer_timeout_setup(struct ieee80211_node *);
86 static void mesh_peer_timeout_backoff(struct ieee80211_node *);
87 static void mesh_peer_timeout_cb(void *);
88 static __inline void
89 mesh_peer_timeout_stop(struct ieee80211_node *);
90 static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *);
91 static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *);
92 static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t,
93 const uint8_t *);
94 uint32_t mesh_airtime_calc(struct ieee80211_node *);
95
96 /*
97 * Timeout values come from the specification and are in milliseconds.
98 */
99 SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0,
100 "IEEE 802.11s parameters");
101 static int ieee80211_mesh_retrytimeout = -1;
102 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW,
103 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I",
104 "Retry timeout (msec)");
105 static int ieee80211_mesh_holdingtimeout = -1;
106 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW,
107 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I",
108 "Holding state timeout (msec)");
109 static int ieee80211_mesh_confirmtimeout = -1;
110 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW,
111 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I",
112 "Confirm state timeout (msec)");
113 static int ieee80211_mesh_maxretries = 2;
114 SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW,
115 &ieee80211_mesh_maxretries, 0,
116 "Maximum retries during peer link establishment");
117
118 static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] =
119 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
120
121 static ieee80211_recv_action_func mesh_recv_action_meshpeering_open;
122 static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm;
123 static ieee80211_recv_action_func mesh_recv_action_meshpeering_close;
124 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req;
125 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep;
126
127 static ieee80211_send_action_func mesh_send_action_meshpeering_open;
128 static ieee80211_send_action_func mesh_send_action_meshpeering_confirm;
129 static ieee80211_send_action_func mesh_send_action_meshpeering_close;
130 static ieee80211_send_action_func mesh_send_action_meshlink_request;
131 static ieee80211_send_action_func mesh_send_action_meshlink_reply;
132
133 static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = {
134 .mpm_descr = "AIRTIME",
135 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME,
136 .mpm_metric = mesh_airtime_calc,
137 };
138
139 static struct ieee80211_mesh_proto_path mesh_proto_paths[4];
140 static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4];
141
142 #define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock)
143 #define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED)
144 #define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock)
145
146 MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table");
147
148 /*
149 * Helper functions to manipulate the Mesh routing table.
150 */
151
152 static struct ieee80211_mesh_route *
153 mesh_rt_find_locked(struct ieee80211_mesh_state *ms,
154 const uint8_t dest[IEEE80211_ADDR_LEN])
155 {
156 struct ieee80211_mesh_route *rt;
157
158 MESH_RT_LOCK_ASSERT(ms);
159
160 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
161 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest))
162 return rt;
163 }
164 return NULL;
165 }
166
167 static struct ieee80211_mesh_route *
168 mesh_rt_add_locked(struct ieee80211_mesh_state *ms,
169 const uint8_t dest[IEEE80211_ADDR_LEN])
170 {
171 struct ieee80211_mesh_route *rt;
172
173 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest),
174 ("%s: adding broadcast to the routing table", __func__));
175
176 MESH_RT_LOCK_ASSERT(ms);
177
178 rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) +
179 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO);
180 if (rt != NULL) {
181 IEEE80211_ADDR_COPY(rt->rt_dest, dest);
182 rt->rt_priv = (void *)ALIGN(&rt[1]);
183 rt->rt_crtime = ticks;
184 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next);
185 }
186 return rt;
187 }
188
189 struct ieee80211_mesh_route *
190 ieee80211_mesh_rt_find(struct ieee80211vap *vap,
191 const uint8_t dest[IEEE80211_ADDR_LEN])
192 {
193 struct ieee80211_mesh_state *ms = vap->iv_mesh;
194 struct ieee80211_mesh_route *rt;
195
196 MESH_RT_LOCK(ms);
197 rt = mesh_rt_find_locked(ms, dest);
198 MESH_RT_UNLOCK(ms);
199 return rt;
200 }
201
202 struct ieee80211_mesh_route *
203 ieee80211_mesh_rt_add(struct ieee80211vap *vap,
204 const uint8_t dest[IEEE80211_ADDR_LEN])
205 {
206 struct ieee80211_mesh_state *ms = vap->iv_mesh;
207 struct ieee80211_mesh_route *rt;
208
209 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL,
210 ("%s: duplicate entry in the routing table", __func__));
211 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest),
212 ("%s: adding self to the routing table", __func__));
213
214 MESH_RT_LOCK(ms);
215 rt = mesh_rt_add_locked(ms, dest);
216 MESH_RT_UNLOCK(ms);
217 return rt;
218 }
219
220 /*
221 * Add a proxy route (as needed) for the specified destination.
222 */
223 void
224 ieee80211_mesh_proxy_check(struct ieee80211vap *vap,
225 const uint8_t dest[IEEE80211_ADDR_LEN])
226 {
227 struct ieee80211_mesh_state *ms = vap->iv_mesh;
228 struct ieee80211_mesh_route *rt;
229
230 MESH_RT_LOCK(ms);
231 rt = mesh_rt_find_locked(ms, dest);
232 if (rt == NULL) {
233 rt = mesh_rt_add_locked(ms, dest);
234 if (rt == NULL) {
235 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
236 "%s", "unable to add proxy entry");
237 vap->iv_stats.is_mesh_rtaddfailed++;
238 } else {
239 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
240 "%s", "add proxy entry");
241 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr);
242 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID
243 | IEEE80211_MESHRT_FLAGS_PROXY;
244 }
245 /* XXX assert PROXY? */
246 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) {
247 struct ieee80211com *ic = vap->iv_ic;
248 /*
249 * Fix existing entry created by received frames from
250 * stations that have some memory of dest. We also
251 * flush any frames held on the staging queue; delivering
252 * them is too much trouble right now.
253 */
254 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
255 "%s", "fix proxy entry");
256 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr);
257 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID
258 | IEEE80211_MESHRT_FLAGS_PROXY;
259 /* XXX belongs in hwmp */
260 ieee80211_ageq_drain_node(&ic->ic_stageq,
261 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest));
262 /* XXX stat? */
263 }
264 MESH_RT_UNLOCK(ms);
265 }
266
267 static __inline void
268 mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt)
269 {
270 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next);
271 free(rt, M_80211_MESH_RT);
272 }
273
274 void
275 ieee80211_mesh_rt_del(struct ieee80211vap *vap,
276 const uint8_t dest[IEEE80211_ADDR_LEN])
277 {
278 struct ieee80211_mesh_state *ms = vap->iv_mesh;
279 struct ieee80211_mesh_route *rt, *next;
280
281 MESH_RT_LOCK(ms);
282 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) {
283 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) {
284 mesh_rt_del(ms, rt);
285 MESH_RT_UNLOCK(ms);
286 return;
287 }
288 }
289 MESH_RT_UNLOCK(ms);
290 }
291
292 void
293 ieee80211_mesh_rt_flush(struct ieee80211vap *vap)
294 {
295 struct ieee80211_mesh_state *ms = vap->iv_mesh;
296 struct ieee80211_mesh_route *rt, *next;
297
298 if (ms == NULL)
299 return;
300 MESH_RT_LOCK(ms);
301 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next)
302 mesh_rt_del(ms, rt);
303 MESH_RT_UNLOCK(ms);
304 }
305
306 void
307 ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap,
308 const uint8_t peer[IEEE80211_ADDR_LEN])
309 {
310 struct ieee80211_mesh_state *ms = vap->iv_mesh;
311 struct ieee80211_mesh_route *rt, *next;
312
313 MESH_RT_LOCK(ms);
314 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) {
315 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer))
316 mesh_rt_del(ms, rt);
317 }
318 MESH_RT_UNLOCK(ms);
319 }
320
321 /*
322 * Flush expired routing entries, i.e. those in invalid state for
323 * some time.
324 */
325 static void
326 mesh_rt_flush_invalid(struct ieee80211vap *vap)
327 {
328 struct ieee80211_mesh_state *ms = vap->iv_mesh;
329 struct ieee80211_mesh_route *rt, *next;
330
331 if (ms == NULL)
332 return;
333 MESH_RT_LOCK(ms);
334 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) {
335 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 &&
336 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact)
337 mesh_rt_del(ms, rt);
338 }
339 MESH_RT_UNLOCK(ms);
340 }
341
342 #define N(a) (sizeof(a) / sizeof(a[0]))
343 int
344 ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp)
345 {
346 int i, firstempty = -1;
347
348 for (i = 0; i < N(mesh_proto_paths); i++) {
349 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr,
350 IEEE80211_MESH_PROTO_DSZ) == 0)
351 return EEXIST;
352 if (!mesh_proto_paths[i].mpp_active && firstempty == -1)
353 firstempty = i;
354 }
355 if (firstempty < 0)
356 return ENOSPC;
357 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp));
358 mesh_proto_paths[firstempty].mpp_active = 1;
359 return 0;
360 }
361
362 int
363 ieee80211_mesh_register_proto_metric(const struct
364 ieee80211_mesh_proto_metric *mpm)
365 {
366 int i, firstempty = -1;
367
368 for (i = 0; i < N(mesh_proto_metrics); i++) {
369 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr,
370 IEEE80211_MESH_PROTO_DSZ) == 0)
371 return EEXIST;
372 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1)
373 firstempty = i;
374 }
375 if (firstempty < 0)
376 return ENOSPC;
377 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm));
378 mesh_proto_metrics[firstempty].mpm_active = 1;
379 return 0;
380 }
381
382 static int
383 mesh_select_proto_path(struct ieee80211vap *vap, const char *name)
384 {
385 struct ieee80211_mesh_state *ms = vap->iv_mesh;
386 int i;
387
388 for (i = 0; i < N(mesh_proto_paths); i++) {
389 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) {
390 ms->ms_ppath = &mesh_proto_paths[i];
391 if (vap->iv_state == IEEE80211_S_RUN)
392 vap->iv_newstate(vap, IEEE80211_S_INIT, 0);
393 return 0;
394 }
395 }
396 return ENOENT;
397 }
398
399 static int
400 mesh_select_proto_metric(struct ieee80211vap *vap, const char *name)
401 {
402 struct ieee80211_mesh_state *ms = vap->iv_mesh;
403 int i;
404
405 for (i = 0; i < N(mesh_proto_metrics); i++) {
406 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) {
407 ms->ms_pmetric = &mesh_proto_metrics[i];
408 if (vap->iv_state == IEEE80211_S_RUN)
409 vap->iv_newstate(vap, IEEE80211_S_INIT, 0);
410 return 0;
411 }
412 }
413 return ENOENT;
414 }
415 #undef N
416
417 static void
418 ieee80211_mesh_init(void)
419 {
420
421 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths));
422 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics));
423
424 /*
425 * Setup mesh parameters that depends on the clock frequency.
426 */
427 ieee80211_mesh_retrytimeout = msecs_to_ticks(40);
428 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40);
429 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40);
430
431 /*
432 * Register action frame handlers.
433 */
434 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
435 IEEE80211_ACTION_MESHPEERING_OPEN,
436 mesh_recv_action_meshpeering_open);
437 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
438 IEEE80211_ACTION_MESHPEERING_CONFIRM,
439 mesh_recv_action_meshpeering_confirm);
440 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
441 IEEE80211_ACTION_MESHPEERING_CLOSE,
442 mesh_recv_action_meshpeering_close);
443 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
444 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req);
445 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
446 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep);
447
448 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
449 IEEE80211_ACTION_MESHPEERING_OPEN,
450 mesh_send_action_meshpeering_open);
451 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
452 IEEE80211_ACTION_MESHPEERING_CONFIRM,
453 mesh_send_action_meshpeering_confirm);
454 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
455 IEEE80211_ACTION_MESHPEERING_CLOSE,
456 mesh_send_action_meshpeering_close);
457 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
458 IEEE80211_ACTION_MESHLMETRIC_REQ,
459 mesh_send_action_meshlink_request);
460 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
461 IEEE80211_ACTION_MESHLMETRIC_REP,
462 mesh_send_action_meshlink_reply);
463
464 /*
465 * Register Airtime Link Metric.
466 */
467 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime);
468
469 }
470 SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL);
471
472 void
473 ieee80211_mesh_attach(struct ieee80211com *ic)
474 {
475 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach;
476 }
477
478 void
479 ieee80211_mesh_detach(struct ieee80211com *ic)
480 {
481 }
482
483 static void
484 mesh_vdetach_peers(void *arg, struct ieee80211_node *ni)
485 {
486 struct ieee80211com *ic = ni->ni_ic;
487 uint16_t args[3];
488
489 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) {
490 args[0] = ni->ni_mlpid;
491 args[1] = ni->ni_mllid;
492 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
493 ieee80211_send_action(ni,
494 IEEE80211_ACTION_CAT_MESHPEERING,
495 IEEE80211_ACTION_MESHPEERING_CLOSE,
496 args);
497 }
498 callout_drain(&ni->ni_mltimer);
499 /* XXX belongs in hwmp */
500 ieee80211_ageq_drain_node(&ic->ic_stageq,
501 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr));
502 }
503
504 static void
505 mesh_vdetach(struct ieee80211vap *vap)
506 {
507 struct ieee80211_mesh_state *ms = vap->iv_mesh;
508
509 callout_drain(&ms->ms_cleantimer);
510 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers,
511 NULL);
512 ieee80211_mesh_rt_flush(vap);
513 mtx_destroy(&ms->ms_rt_lock);
514 ms->ms_ppath->mpp_vdetach(vap);
515 free(vap->iv_mesh, M_80211_VAP);
516 vap->iv_mesh = NULL;
517 }
518
519 static void
520 mesh_vattach(struct ieee80211vap *vap)
521 {
522 struct ieee80211_mesh_state *ms;
523 vap->iv_newstate = mesh_newstate;
524 vap->iv_input = mesh_input;
525 vap->iv_opdetach = mesh_vdetach;
526 vap->iv_recv_mgmt = mesh_recv_mgmt;
527 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP,
528 M_NOWAIT | M_ZERO);
529 if (ms == NULL) {
530 printf("%s: couldn't alloc MBSS state\n", __func__);
531 return;
532 }
533 vap->iv_mesh = ms;
534 ms->ms_seq = 0;
535 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD);
536 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL;
537 TAILQ_INIT(&ms->ms_routes);
538 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF);
539 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE);
540 mesh_select_proto_metric(vap, "AIRTIME");
541 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL"));
542 mesh_select_proto_path(vap, "HWMP");
543 KASSERT(ms->ms_ppath, ("ms_ppath == NULL"));
544 ms->ms_ppath->mpp_vattach(vap);
545 }
546
547 /*
548 * IEEE80211_M_MBSS vap state machine handler.
549 */
550 static int
551 mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
552 {
553 struct ieee80211_mesh_state *ms = vap->iv_mesh;
554 struct ieee80211com *ic = vap->iv_ic;
555 struct ieee80211_node *ni;
556 enum ieee80211_state ostate;
557
558 IEEE80211_LOCK_ASSERT(ic);
559
560 ostate = vap->iv_state;
561 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n",
562 __func__, ieee80211_state_name[ostate],
563 ieee80211_state_name[nstate], arg);
564 vap->iv_state = nstate; /* state transition */
565 if (ostate != IEEE80211_S_SCAN)
566 ieee80211_cancel_scan(vap); /* background scan */
567 ni = vap->iv_bss; /* NB: no reference held */
568 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN)
569 callout_drain(&ms->ms_cleantimer);
570 switch (nstate) {
571 case IEEE80211_S_INIT:
572 switch (ostate) {
573 case IEEE80211_S_SCAN:
574 ieee80211_cancel_scan(vap);
575 break;
576 case IEEE80211_S_CAC:
577 ieee80211_dfs_cac_stop(vap);
578 break;
579 case IEEE80211_S_RUN:
580 ieee80211_iterate_nodes(&ic->ic_sta,
581 mesh_vdetach_peers, NULL);
582 break;
583 default:
584 break;
585 }
586 if (ostate != IEEE80211_S_INIT) {
587 /* NB: optimize INIT -> INIT case */
588 ieee80211_reset_bss(vap);
589 ieee80211_mesh_rt_flush(vap);
590 }
591 break;
592 case IEEE80211_S_SCAN:
593 switch (ostate) {
594 case IEEE80211_S_INIT:
595 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC &&
596 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) &&
597 ms->ms_idlen != 0) {
598 /*
599 * Already have a channel and a mesh ID; bypass
600 * the scan and startup immediately.
601 */
602 ieee80211_create_ibss(vap, vap->iv_des_chan);
603 break;
604 }
605 /*
606 * Initiate a scan. We can come here as a result
607 * of an IEEE80211_IOC_SCAN_REQ too in which case
608 * the vap will be marked with IEEE80211_FEXT_SCANREQ
609 * and the scan request parameters will be present
610 * in iv_scanreq. Otherwise we do the default.
611 */
612 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) {
613 ieee80211_check_scan(vap,
614 vap->iv_scanreq_flags,
615 vap->iv_scanreq_duration,
616 vap->iv_scanreq_mindwell,
617 vap->iv_scanreq_maxdwell,
618 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid);
619 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ;
620 } else
621 ieee80211_check_scan_current(vap);
622 break;
623 default:
624 break;
625 }
626 break;
627 case IEEE80211_S_CAC:
628 /*
629 * Start CAC on a DFS channel. We come here when starting
630 * a bss on a DFS channel (see ieee80211_create_ibss).
631 */
632 ieee80211_dfs_cac_start(vap);
633 break;
634 case IEEE80211_S_RUN:
635 switch (ostate) {
636 case IEEE80211_S_INIT:
637 /*
638 * Already have a channel; bypass the
639 * scan and startup immediately.
640 * Note that ieee80211_create_ibss will call
641 * back to do a RUN->RUN state change.
642 */
643 ieee80211_create_ibss(vap,
644 ieee80211_ht_adjust_channel(ic,
645 ic->ic_curchan, vap->iv_flags_ht));
646 /* NB: iv_bss is changed on return */
647 break;
648 case IEEE80211_S_CAC:
649 /*
650 * NB: This is the normal state change when CAC
651 * expires and no radar was detected; no need to
652 * clear the CAC timer as it's already expired.
653 */
654 /* fall thru... */
655 case IEEE80211_S_CSA:
656 #if 0
657 /*
658 * Shorten inactivity timer of associated stations
659 * to weed out sta's that don't follow a CSA.
660 */
661 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap);
662 #endif
663 /*
664 * Update bss node channel to reflect where
665 * we landed after CSA.
666 */
667 ieee80211_node_set_chan(vap->iv_bss,
668 ieee80211_ht_adjust_channel(ic, ic->ic_curchan,
669 ieee80211_htchanflags(vap->iv_bss->ni_chan)));
670 /* XXX bypass debug msgs */
671 break;
672 case IEEE80211_S_SCAN:
673 case IEEE80211_S_RUN:
674 #ifdef IEEE80211_DEBUG
675 if (ieee80211_msg_debug(vap)) {
676 struct ieee80211_node *ni = vap->iv_bss;
677 ieee80211_note(vap,
678 "synchronized with %s meshid ",
679 ether_sprintf(ni->ni_meshid));
680 ieee80211_print_essid(ni->ni_meshid,
681 ni->ni_meshidlen);
682 /* XXX MCS/HT */
683 printf(" channel %d\n",
684 ieee80211_chan2ieee(ic, ic->ic_curchan));
685 }
686 #endif
687 break;
688 default:
689 break;
690 }
691 ieee80211_node_authorize(vap->iv_bss);
692 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact,
693 mesh_rt_cleanup_cb, vap);
694 break;
695 default:
696 break;
697 }
698 /* NB: ostate not nstate */
699 ms->ms_ppath->mpp_newstate(vap, ostate, arg);
700 return 0;
701 }
702
703 static void
704 mesh_rt_cleanup_cb(void *arg)
705 {
706 struct ieee80211vap *vap = arg;
707 struct ieee80211_mesh_state *ms = vap->iv_mesh;
708
709 mesh_rt_flush_invalid(vap);
710 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact,
711 mesh_rt_cleanup_cb, vap);
712 }
713
714
715 /*
716 * Helper function to note the Mesh Peer Link FSM change.
717 */
718 static void
719 mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state)
720 {
721 struct ieee80211vap *vap = ni->ni_vap;
722 struct ieee80211_mesh_state *ms = vap->iv_mesh;
723 #ifdef IEEE80211_DEBUG
724 static const char *meshlinkstates[] = {
725 [IEEE80211_NODE_MESH_IDLE] = "IDLE",
726 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT",
727 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED",
728 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED",
729 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED",
730 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING"
731 };
732 #endif
733 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH,
734 ni, "peer link: %s -> %s",
735 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]);
736
737 /* track neighbor count */
738 if (state == IEEE80211_NODE_MESH_ESTABLISHED &&
739 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) {
740 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow"));
741 ms->ms_neighbors++;
742 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED &&
743 state != IEEE80211_NODE_MESH_ESTABLISHED) {
744 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0"));
745 ms->ms_neighbors--;
746 }
747 ni->ni_mlstate = state;
748 switch (state) {
749 case IEEE80211_NODE_MESH_HOLDING:
750 ms->ms_ppath->mpp_peerdown(ni);
751 break;
752 case IEEE80211_NODE_MESH_ESTABLISHED:
753 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL);
754 break;
755 default:
756 break;
757 }
758 }
759
760 /*
761 * Helper function to generate a unique local ID required for mesh
762 * peer establishment.
763 */
764 static void
765 mesh_checkid(void *arg, struct ieee80211_node *ni)
766 {
767 uint16_t *r = arg;
768
769 if (*r == ni->ni_mllid)
770 *(uint16_t *)arg = 0;
771 }
772
773 static uint32_t
774 mesh_generateid(struct ieee80211vap *vap)
775 {
776 int maxiter = 4;
777 uint16_t r;
778
779 do {
780 get_random_bytes(&r, 2);
781 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r);
782 maxiter--;
783 } while (r == 0 && maxiter > 0);
784 return r;
785 }
786
787 /*
788 * Verifies if we already received this packet by checking its
789 * sequence number.
790 * Returns 0 if the frame is to be accepted, 1 otherwise.
791 */
792 static int
793 mesh_checkpseq(struct ieee80211vap *vap,
794 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq)
795 {
796 struct ieee80211_mesh_route *rt;
797
798 rt = ieee80211_mesh_rt_find(vap, source);
799 if (rt == NULL) {
800 rt = ieee80211_mesh_rt_add(vap, source);
801 if (rt == NULL) {
802 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source,
803 "%s", "add mcast route failed");
804 vap->iv_stats.is_mesh_rtaddfailed++;
805 return 1;
806 }
807 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source,
808 "add mcast route, mesh seqno %d", seq);
809 rt->rt_lastmseq = seq;
810 return 0;
811 }
812 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) {
813 return 1;
814 } else {
815 rt->rt_lastmseq = seq;
816 return 0;
817 }
818 }
819
820 /*
821 * Iterate the routing table and locate the next hop.
822 */
823 static struct ieee80211_node *
824 mesh_find_txnode(struct ieee80211vap *vap,
825 const uint8_t dest[IEEE80211_ADDR_LEN])
826 {
827 struct ieee80211_mesh_route *rt;
828
829 rt = ieee80211_mesh_rt_find(vap, dest);
830 if (rt == NULL)
831 return NULL;
832 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 ||
833 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) {
834 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
835 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags);
836 /* XXX stat */
837 return NULL;
838 }
839 return ieee80211_find_txnode(vap, rt->rt_nexthop);
840 }
841
842 /*
843 * Forward the specified frame.
844 * Decrement the TTL and set TA to our MAC address.
845 */
846 static void
847 mesh_forward(struct ieee80211vap *vap, struct mbuf *m,
848 const struct ieee80211_meshcntl *mc)
849 {
850 struct ieee80211com *ic = vap->iv_ic;
851 struct ieee80211_mesh_state *ms = vap->iv_mesh;
852 struct ifnet *ifp = vap->iv_ifp;
853 struct ifnet *parent = ic->ic_ifp;
854 const struct ieee80211_frame *wh =
855 mtod(m, const struct ieee80211_frame *);
856 struct mbuf *mcopy;
857 struct ieee80211_meshcntl *mccopy;
858 struct ieee80211_frame *whcopy;
859 struct ieee80211_node *ni;
860 int err;
861
862 if (mc->mc_ttl == 0) {
863 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
864 "%s", "frame not fwd'd, ttl 0");
865 vap->iv_stats.is_mesh_fwd_ttl++;
866 return;
867 }
868 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) {
869 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
870 "%s", "frame not fwd'd, fwding disabled");
871 vap->iv_stats.is_mesh_fwd_disabled++;
872 return;
873 }
874 mcopy = m_dup(m, M_DONTWAIT);
875 if (mcopy == NULL) {
876 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
877 "%s", "frame not fwd'd, cannot dup");
878 vap->iv_stats.is_mesh_fwd_nobuf++;
879 ifp->if_oerrors++;
880 return;
881 }
882 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) +
883 sizeof(struct ieee80211_meshcntl));
884 if (mcopy == NULL) {
885 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
886 "%s", "frame not fwd'd, too short");
887 vap->iv_stats.is_mesh_fwd_tooshort++;
888 ifp->if_oerrors++;
889 m_freem(mcopy);
890 return;
891 }
892 whcopy = mtod(mcopy, struct ieee80211_frame *);
893 mccopy = (struct ieee80211_meshcntl *)
894 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh));
895 /* XXX clear other bits? */
896 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY;
897 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr);
898 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
899 ni = ieee80211_ref_node(vap->iv_bss);
900 mcopy->m_flags |= M_MCAST;
901 } else {
902 ni = mesh_find_txnode(vap, whcopy->i_addr3);
903 if (ni == NULL) {
904 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
905 "%s", "frame not fwd'd, no path");
906 vap->iv_stats.is_mesh_fwd_nopath++;
907 m_freem(mcopy);
908 return;
909 }
910 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr);
911 }
912 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__));
913 mccopy->mc_ttl--;
914
915 /* XXX calculate priority so drivers can find the tx queue */
916 M_WME_SETAC(mcopy, WME_AC_BE);
917
918 /* XXX do we know m_nextpkt is NULL? */
919 mcopy->m_pkthdr.rcvif = (void *) ni;
920 err = parent->if_transmit(parent, mcopy);
921 if (err != 0) {
922 /* NB: IFQ_HANDOFF reclaims mbuf */
923 ieee80211_free_node(ni);
924 } else {
925 ifp->if_opackets++;
926 }
927 }
928
929 static struct mbuf *
930 mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen)
931 {
932 #define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK)
933 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) +
934 sizeof(struct ieee80211_meshcntl_ae11)];
935 const struct ieee80211_qosframe_addr4 *wh;
936 const struct ieee80211_meshcntl_ae10 *mc;
937 struct ether_header *eh;
938 struct llc *llc;
939 int ae;
940
941 if (m->m_len < hdrlen + sizeof(*llc) &&
942 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) {
943 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY,
944 "discard data frame: %s", "m_pullup failed");
945 vap->iv_stats.is_rx_tooshort++;
946 return NULL;
947 }
948 memcpy(b, mtod(m, caddr_t), hdrlen);
949 wh = (const struct ieee80211_qosframe_addr4 *)&b[0];
950 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen];
951 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS ||
952 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS,
953 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1]));
954
955 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen);
956 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP &&
957 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 &&
958 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 &&
959 /* NB: preserve AppleTalk frames that have a native SNAP hdr */
960 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) ||
961 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) {
962 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh));
963 llc = NULL;
964 } else {
965 m_adj(m, hdrlen - sizeof(*eh));
966 }
967 eh = mtod(m, struct ether_header *);
968 ae = mc->mc_flags & 3;
969 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) {
970 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1);
971 if (ae == 0) {
972 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3);
973 } else if (ae == 1) {
974 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4);
975 } else {
976 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
977 (const struct ieee80211_frame *)wh, NULL,
978 "bad AE %d", ae);
979 vap->iv_stats.is_mesh_badae++;
980 m_freem(m);
981 return NULL;
982 }
983 } else {
984 if (ae == 0) {
985 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3);
986 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4);
987 } else if (ae == 2) {
988 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4);
989 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5);
990 } else {
991 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
992 (const struct ieee80211_frame *)wh, NULL,
993 "bad AE %d", ae);
994 vap->iv_stats.is_mesh_badae++;
995 m_freem(m);
996 return NULL;
997 }
998 }
999 #ifdef ALIGNED_POINTER
1000 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) {
1001 m = ieee80211_realign(vap, m, sizeof(*eh));
1002 if (m == NULL)
1003 return NULL;
1004 }
1005 #endif /* ALIGNED_POINTER */
1006 if (llc != NULL) {
1007 eh = mtod(m, struct ether_header *);
1008 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh));
1009 }
1010 return m;
1011 #undef WDIR
1012 }
1013
1014 /*
1015 * Return non-zero if the unicast mesh data frame should be processed
1016 * locally. Frames that are not proxy'd have our address, otherwise
1017 * we need to consult the routing table to look for a proxy entry.
1018 */
1019 static __inline int
1020 mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh,
1021 const struct ieee80211_meshcntl *mc)
1022 {
1023 int ae = mc->mc_flags & 3;
1024
1025 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS,
1026 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1]));
1027 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae));
1028 if (ae == 2) { /* ucast w/ proxy */
1029 const struct ieee80211_meshcntl_ae10 *mc10 =
1030 (const struct ieee80211_meshcntl_ae10 *) mc;
1031 struct ieee80211_mesh_route *rt =
1032 ieee80211_mesh_rt_find(vap, mc10->mc_addr4);
1033 /* check for proxy route to ourself */
1034 return (rt != NULL &&
1035 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY));
1036 } else /* ucast w/o proxy */
1037 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr);
1038 }
1039
1040 static int
1041 mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf)
1042 {
1043 #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0)
1044 #define HAS_SEQ(type) ((type & 0x4) == 0)
1045 struct ieee80211vap *vap = ni->ni_vap;
1046 struct ieee80211com *ic = ni->ni_ic;
1047 struct ifnet *ifp = vap->iv_ifp;
1048 struct ieee80211_frame *wh;
1049 const struct ieee80211_meshcntl *mc;
1050 int hdrspace, meshdrlen, need_tap;
1051 uint8_t dir, type, subtype, qos;
1052 uint32_t seq;
1053 uint8_t *addr;
1054 ieee80211_seq rxseq;
1055
1056 KASSERT(ni != NULL, ("null node"));
1057 ni->ni_inact = ni->ni_inact_reload;
1058
1059 need_tap = 1; /* mbuf need to be tapped. */
1060 type = -1; /* undefined */
1061
1062 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) {
1063 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
1064 ni->ni_macaddr, NULL,
1065 "too short (1): len %u", m->m_pkthdr.len);
1066 vap->iv_stats.is_rx_tooshort++;
1067 goto out;
1068 }
1069 /*
1070 * Bit of a cheat here, we use a pointer for a 3-address
1071 * frame format but don't reference fields past outside
1072 * ieee80211_frame_min w/o first validating the data is
1073 * present.
1074 */
1075 wh = mtod(m, struct ieee80211_frame *);
1076
1077 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) !=
1078 IEEE80211_FC0_VERSION_0) {
1079 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
1080 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]);
1081 vap->iv_stats.is_rx_badversion++;
1082 goto err;
1083 }
1084 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
1085 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
1086 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1087 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
1088 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi);
1089 ni->ni_noise = nf;
1090 if (HAS_SEQ(type)) {
1091 uint8_t tid = ieee80211_gettid(wh);
1092
1093 if (IEEE80211_QOS_HAS_SEQ(wh) &&
1094 TID_TO_WME_AC(tid) >= WME_AC_VI)
1095 ic->ic_wme.wme_hipri_traffic++;
1096 rxseq = le16toh(*(uint16_t *)wh->i_seq);
1097 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 &&
1098 (wh->i_fc[1] & IEEE80211_FC1_RETRY) &&
1099 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) {
1100 /* duplicate, discard */
1101 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
1102 wh->i_addr1, "duplicate",
1103 "seqno <%u,%u> fragno <%u,%u> tid %u",
1104 rxseq >> IEEE80211_SEQ_SEQ_SHIFT,
1105 ni->ni_rxseqs[tid] >>
1106 IEEE80211_SEQ_SEQ_SHIFT,
1107 rxseq & IEEE80211_SEQ_FRAG_MASK,
1108 ni->ni_rxseqs[tid] &
1109 IEEE80211_SEQ_FRAG_MASK,
1110 tid);
1111 vap->iv_stats.is_rx_dup++;
1112 IEEE80211_NODE_STAT(ni, rx_dup);
1113 goto out;
1114 }
1115 ni->ni_rxseqs[tid] = rxseq;
1116 }
1117 }
1118 #ifdef IEEE80211_DEBUG
1119 /*
1120 * It's easier, but too expensive, to simulate different mesh
1121 * topologies by consulting the ACL policy very early, so do this
1122 * only under DEBUG.
1123 *
1124 * NB: this check is also done upon peering link initiation.
1125 */
1126 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) {
1127 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL,
1128 wh, NULL, "%s", "disallowed by ACL");
1129 vap->iv_stats.is_rx_acl++;
1130 goto out;
1131 }
1132 #endif
1133 switch (type) {
1134 case IEEE80211_FC0_TYPE_DATA:
1135 if (ni == vap->iv_bss)
1136 goto out;
1137 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) {
1138 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH,
1139 ni->ni_macaddr, NULL,
1140 "peer link not yet established (%d)",
1141 ni->ni_mlstate);
1142 vap->iv_stats.is_mesh_nolink++;
1143 goto out;
1144 }
1145 if (dir != IEEE80211_FC1_DIR_FROMDS &&
1146 dir != IEEE80211_FC1_DIR_DSTODS) {
1147 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1148 wh, "data", "incorrect dir 0x%x", dir);
1149 vap->iv_stats.is_rx_wrongdir++;
1150 goto err;
1151 }
1152 /* pull up enough to get to the mesh control */
1153 hdrspace = ieee80211_hdrspace(ic, wh);
1154 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) &&
1155 (m = m_pullup(m, hdrspace +
1156 sizeof(struct ieee80211_meshcntl))) == NULL) {
1157 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
1158 ni->ni_macaddr, NULL,
1159 "data too short: expecting %u", hdrspace);
1160 vap->iv_stats.is_rx_tooshort++;
1161 goto out; /* XXX */
1162 }
1163 /*
1164 * Now calculate the full extent of the headers. Note
1165 * mesh_decap will pull up anything we didn't get
1166 * above when it strips the 802.11 headers.
1167 */
1168 mc = (const struct ieee80211_meshcntl *)
1169 (mtod(m, const uint8_t *) + hdrspace);
1170 meshdrlen = sizeof(struct ieee80211_meshcntl) +
1171 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN;
1172 hdrspace += meshdrlen;
1173 seq = LE_READ_4(mc->mc_seq);
1174 if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1175 addr = wh->i_addr3;
1176 else
1177 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4;
1178 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) {
1179 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
1180 addr, "data", "%s", "not to me");
1181 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */
1182 goto out;
1183 }
1184 if (mesh_checkpseq(vap, addr, seq) != 0) {
1185 vap->iv_stats.is_rx_dup++;
1186 goto out;
1187 }
1188
1189 /*
1190 * Potentially forward packet. See table s36 (p140)
1191 * for the rules. XXX tap fwd'd packets not for us?
1192 */
1193 if (dir == IEEE80211_FC1_DIR_FROMDS ||
1194 !mesh_isucastforme(vap, wh, mc)) {
1195 mesh_forward(vap, m, mc);
1196 if (dir == IEEE80211_FC1_DIR_DSTODS)
1197 goto out;
1198 /* NB: fall thru to deliver mcast frames locally */
1199 }
1200
1201 /*
1202 * Save QoS bits for use below--before we strip the header.
1203 */
1204 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) {
1205 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ?
1206 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] :
1207 ((struct ieee80211_qosframe *)wh)->i_qos[0];
1208 } else
1209 qos = 0;
1210 /*
1211 * Next up, any fragmentation.
1212 */
1213 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1214 m = ieee80211_defrag(ni, m, hdrspace);
1215 if (m == NULL) {
1216 /* Fragment dropped or frame not complete yet */
1217 goto out;
1218 }
1219 }
1220 wh = NULL; /* no longer valid, catch any uses */
1221
1222 if (ieee80211_radiotap_active_vap(vap))
1223 ieee80211_radiotap_rx(vap, m);
1224 need_tap = 0;
1225
1226 /*
1227 * Finally, strip the 802.11 header.
1228 */
1229 m = mesh_decap(vap, m, hdrspace, meshdrlen);
1230 if (m == NULL) {
1231 /* XXX mask bit to check for both */
1232 /* don't count Null data frames as errors */
1233 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA ||
1234 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL)
1235 goto out;
1236 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
1237 ni->ni_macaddr, "data", "%s", "decap error");
1238 vap->iv_stats.is_rx_decap++;
1239 IEEE80211_NODE_STAT(ni, rx_decap);
1240 goto err;
1241 }
1242 if (qos & IEEE80211_QOS_AMSDU) {
1243 m = ieee80211_decap_amsdu(ni, m);
1244 if (m == NULL)
1245 return IEEE80211_FC0_TYPE_DATA;
1246 }
1247 ieee80211_deliver_data(vap, ni, m);
1248 return type;
1249 case IEEE80211_FC0_TYPE_MGT:
1250 vap->iv_stats.is_rx_mgmt++;
1251 IEEE80211_NODE_STAT(ni, rx_mgmt);
1252 if (dir != IEEE80211_FC1_DIR_NODS) {
1253 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1254 wh, "mgt", "incorrect dir 0x%x", dir);
1255 vap->iv_stats.is_rx_wrongdir++;
1256 goto err;
1257 }
1258 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) {
1259 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
1260 ni->ni_macaddr, "mgt", "too short: len %u",
1261 m->m_pkthdr.len);
1262 vap->iv_stats.is_rx_tooshort++;
1263 goto out;
1264 }
1265 #ifdef IEEE80211_DEBUG
1266 if ((ieee80211_msg_debug(vap) &&
1267 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) ||
1268 ieee80211_msg_dumppkts(vap)) {
1269 if_printf(ifp, "received %s from %s rssi %d\n",
1270 ieee80211_mgt_subtype_name[subtype >>
1271 IEEE80211_FC0_SUBTYPE_SHIFT],
1272 ether_sprintf(wh->i_addr2), rssi);
1273 }
1274 #endif
1275 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1276 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1277 wh, NULL, "%s", "WEP set but not permitted");
1278 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */
1279 goto out;
1280 }
1281 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf);
1282 goto out;
1283 case IEEE80211_FC0_TYPE_CTL:
1284 vap->iv_stats.is_rx_ctl++;
1285 IEEE80211_NODE_STAT(ni, rx_ctrl);
1286 goto out;
1287 default:
1288 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
1289 wh, "bad", "frame type 0x%x", type);
1290 /* should not come here */
1291 break;
1292 }
1293 err:
1294 ifp->if_ierrors++;
1295 out:
1296 if (m != NULL) {
1297 if (need_tap && ieee80211_radiotap_active_vap(vap))
1298 ieee80211_radiotap_rx(vap, m);
1299 m_freem(m);
1300 }
1301 return type;
1302 }
1303
1304 static void
1305 mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype,
1306 int rssi, int nf)
1307 {
1308 struct ieee80211vap *vap = ni->ni_vap;
1309 struct ieee80211_mesh_state *ms = vap->iv_mesh;
1310 struct ieee80211com *ic = ni->ni_ic;
1311 struct ieee80211_frame *wh;
1312 uint8_t *frm, *efrm;
1313
1314 wh = mtod(m0, struct ieee80211_frame *);
1315 frm = (uint8_t *)&wh[1];
1316 efrm = mtod(m0, uint8_t *) + m0->m_len;
1317 switch (subtype) {
1318 case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
1319 case IEEE80211_FC0_SUBTYPE_BEACON:
1320 {
1321 struct ieee80211_scanparams scan;
1322 /*
1323 * We process beacon/probe response
1324 * frames to discover neighbors.
1325 */
1326 if (ieee80211_parse_beacon(ni, m0, &scan) != 0)
1327 return;
1328 /*
1329 * Count frame now that we know it's to be processed.
1330 */
1331 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) {
1332 vap->iv_stats.is_rx_beacon++; /* XXX remove */
1333 IEEE80211_NODE_STAT(ni, rx_beacons);
1334 } else
1335 IEEE80211_NODE_STAT(ni, rx_proberesp);
1336 /*
1337 * If scanning, just pass information to the scan module.
1338 */
1339 if (ic->ic_flags & IEEE80211_F_SCAN) {
1340 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) {
1341 /*
1342 * Actively scanning a channel marked passive;
1343 * send a probe request now that we know there
1344 * is 802.11 traffic present.
1345 *
1346 * XXX check if the beacon we recv'd gives
1347 * us what we need and suppress the probe req
1348 */
1349 ieee80211_probe_curchan(vap, 1);
1350 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN;
1351 }
1352 ieee80211_add_scan(vap, &scan, wh,
1353 subtype, rssi, nf);
1354 return;
1355 }
1356
1357 /* The rest of this code assumes we are running */
1358 if (vap->iv_state != IEEE80211_S_RUN)
1359 return;
1360 /*
1361 * Ignore non-mesh STAs.
1362 */
1363 if ((scan.capinfo &
1364 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) ||
1365 scan.meshid == NULL || scan.meshconf == NULL) {
1366 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1367 wh, "beacon", "%s", "not a mesh sta");
1368 vap->iv_stats.is_mesh_wrongmesh++;
1369 return;
1370 }
1371 /*
1372 * Ignore STAs for other mesh networks.
1373 */
1374 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 ||
1375 mesh_verify_meshconf(vap, scan.meshconf)) {
1376 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1377 wh, "beacon", "%s", "not for our mesh");
1378 vap->iv_stats.is_mesh_wrongmesh++;
1379 return;
1380 }
1381 /*
1382 * Peer only based on the current ACL policy.
1383 */
1384 if (vap->iv_acl != NULL &&
1385 !vap->iv_acl->iac_check(vap, wh->i_addr2)) {
1386 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL,
1387 wh, NULL, "%s", "disallowed by ACL");
1388 vap->iv_stats.is_rx_acl++;
1389 return;
1390 }
1391 /*
1392 * Do neighbor discovery.
1393 */
1394 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) {
1395 /*
1396 * Create a new entry in the neighbor table.
1397 */
1398 ni = ieee80211_add_neighbor(vap, wh, &scan);
1399 }
1400 /*
1401 * Automatically peer with discovered nodes if possible.
1402 * XXX backoff on repeated failure
1403 */
1404 if (ni != vap->iv_bss &&
1405 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) &&
1406 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) {
1407 uint16_t args[1];
1408
1409 ni->ni_mlpid = mesh_generateid(vap);
1410 if (ni->ni_mlpid == 0)
1411 return;
1412 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT);
1413 args[0] = ni->ni_mlpid;
1414 ieee80211_send_action(ni,
1415 IEEE80211_ACTION_CAT_MESHPEERING,
1416 IEEE80211_ACTION_MESHPEERING_OPEN, args);
1417 ni->ni_mlrcnt = 0;
1418 mesh_peer_timeout_setup(ni);
1419 }
1420 break;
1421 }
1422 case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
1423 {
1424 uint8_t *ssid, *meshid, *rates, *xrates;
1425 uint8_t *sfrm;
1426
1427 if (vap->iv_state != IEEE80211_S_RUN) {
1428 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1429 wh, NULL, "wrong state %s",
1430 ieee80211_state_name[vap->iv_state]);
1431 vap->iv_stats.is_rx_mgtdiscard++;
1432 return;
1433 }
1434 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) {
1435 /* frame must be directed */
1436 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1437 wh, NULL, "%s", "not unicast");
1438 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */
1439 return;
1440 }
1441 /*
1442 * prreq frame format
1443 * [tlv] ssid
1444 * [tlv] supported rates
1445 * [tlv] extended supported rates
1446 * [tlv] mesh id
1447 */
1448 ssid = meshid = rates = xrates = NULL;
1449 sfrm = frm;
1450 while (efrm - frm > 1) {
1451 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1452 switch (*frm) {
1453 case IEEE80211_ELEMID_SSID:
1454 ssid = frm;
1455 break;
1456 case IEEE80211_ELEMID_RATES:
1457 rates = frm;
1458 break;
1459 case IEEE80211_ELEMID_XRATES:
1460 xrates = frm;
1461 break;
1462 case IEEE80211_ELEMID_MESHID:
1463 meshid = frm;
1464 break;
1465 }
1466 frm += frm[2] + 2;
1467 }
1468 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return);
1469 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return);
1470 if (xrates != NULL)
1471 IEEE80211_VERIFY_ELEMENT(xrates,
1472 IEEE80211_RATE_MAXSIZE - rates[1], return);
1473 if (meshid != NULL)
1474 IEEE80211_VERIFY_ELEMENT(meshid,
1475 IEEE80211_MESHID_LEN, return);
1476 /* NB: meshid, not ssid */
1477 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return);
1478
1479 /* XXX find a better class or define it's own */
1480 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2,
1481 "%s", "recv probe req");
1482 /*
1483 * Some legacy 11b clients cannot hack a complete
1484 * probe response frame. When the request includes
1485 * only a bare-bones rate set, communicate this to
1486 * the transmit side.
1487 */
1488 ieee80211_send_proberesp(vap, wh->i_addr2, 0);
1489 break;
1490 }
1491 case IEEE80211_FC0_SUBTYPE_ACTION:
1492 if (vap->iv_state != IEEE80211_S_RUN) {
1493 vap->iv_stats.is_rx_mgtdiscard++;
1494 break;
1495 }
1496 /*
1497 * We received an action for an unknown neighbor.
1498 * XXX: wait for it to beacon or create ieee80211_node?
1499 */
1500 if (ni == vap->iv_bss) {
1501 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH,
1502 wh, NULL, "%s", "unknown node");
1503 vap->iv_stats.is_rx_mgtdiscard++;
1504 break;
1505 }
1506 /*
1507 * Discard if not for us.
1508 */
1509 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) &&
1510 !IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1511 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH,
1512 wh, NULL, "%s", "not for me");
1513 vap->iv_stats.is_rx_mgtdiscard++;
1514 break;
1515 }
1516 /* XXX parse_action is a bit useless now */
1517 if (ieee80211_parse_action(ni, m0) == 0)
1518 ic->ic_recv_action(ni, wh, frm, efrm);
1519 break;
1520 case IEEE80211_FC0_SUBTYPE_AUTH:
1521 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
1522 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ:
1523 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
1524 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
1525 case IEEE80211_FC0_SUBTYPE_DEAUTH:
1526 case IEEE80211_FC0_SUBTYPE_DISASSOC:
1527 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1528 wh, NULL, "%s", "not handled");
1529 vap->iv_stats.is_rx_mgtdiscard++;
1530 return;
1531 default:
1532 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
1533 wh, "mgt", "subtype 0x%x not handled", subtype);
1534 vap->iv_stats.is_rx_badsubtype++;
1535 break;
1536 }
1537 }
1538
1539 /*
1540 * Parse meshpeering action ie's for open+confirm frames; the
1541 * important bits are returned in the supplied structure.
1542 */
1543 static const struct ieee80211_meshpeer_ie *
1544 mesh_parse_meshpeering_action(struct ieee80211_node *ni,
1545 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */
1546 const uint8_t *frm, const uint8_t *efrm,
1547 struct ieee80211_meshpeer_ie *mp, uint8_t subtype)
1548 {
1549 struct ieee80211vap *vap = ni->ni_vap;
1550 const struct ieee80211_meshpeer_ie *mpie;
1551 const uint8_t *meshid, *meshconf, *meshpeer;
1552
1553 meshid = meshconf = meshpeer = NULL;
1554 while (efrm - frm > 1) {
1555 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL);
1556 switch (*frm) {
1557 case IEEE80211_ELEMID_MESHID:
1558 meshid = frm;
1559 break;
1560 case IEEE80211_ELEMID_MESHCONF:
1561 meshconf = frm;
1562 break;
1563 case IEEE80211_ELEMID_MESHPEER:
1564 meshpeer = frm;
1565 mpie = (const struct ieee80211_meshpeer_ie *) frm;
1566 memset(mp, 0, sizeof(*mp));
1567 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid);
1568 /* NB: peer link ID is optional on these frames */
1569 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE &&
1570 mpie->peer_len == 8) {
1571 mp->peer_linkid = 0;
1572 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid);
1573 } else {
1574 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid);
1575 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode);
1576 }
1577 break;
1578 }
1579 frm += frm[1] + 2;
1580 }
1581
1582 /*
1583 * Verify the contents of the frame. Action frames with
1584 * close subtype don't have a Mesh Configuration IE.
1585 * If if fails validation, close the peer link.
1586 */
1587 KASSERT(meshpeer != NULL &&
1588 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE,
1589 ("parsing close action"));
1590
1591 if (mesh_verify_meshid(vap, meshid) ||
1592 mesh_verify_meshpeer(vap, subtype, meshpeer) ||
1593 mesh_verify_meshconf(vap, meshconf)) {
1594 uint16_t args[3];
1595
1596 IEEE80211_DISCARD(vap,
1597 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
1598 wh, NULL, "%s", "not for our mesh");
1599 vap->iv_stats.is_rx_mgtdiscard++;
1600 switch (ni->ni_mlstate) {
1601 case IEEE80211_NODE_MESH_IDLE:
1602 case IEEE80211_NODE_MESH_ESTABLISHED:
1603 case IEEE80211_NODE_MESH_HOLDING:
1604 /* ignore */
1605 break;
1606 case IEEE80211_NODE_MESH_OPENSNT:
1607 case IEEE80211_NODE_MESH_OPENRCV:
1608 case IEEE80211_NODE_MESH_CONFIRMRCV:
1609 args[0] = ni->ni_mlpid;
1610 args[1] = ni->ni_mllid;
1611 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1612 ieee80211_send_action(ni,
1613 IEEE80211_ACTION_CAT_MESHPEERING,
1614 IEEE80211_ACTION_MESHPEERING_CLOSE,
1615 args);
1616 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1617 mesh_peer_timeout_setup(ni);
1618 break;
1619 }
1620 return NULL;
1621 }
1622 return (const struct ieee80211_meshpeer_ie *) mp;
1623 }
1624
1625 static int
1626 mesh_recv_action_meshpeering_open(struct ieee80211_node *ni,
1627 const struct ieee80211_frame *wh,
1628 const uint8_t *frm, const uint8_t *efrm)
1629 {
1630 struct ieee80211vap *vap = ni->ni_vap;
1631 struct ieee80211_meshpeer_ie ie;
1632 const struct ieee80211_meshpeer_ie *meshpeer;
1633 uint16_t args[3];
1634
1635 /* +2+2 for action + code + capabilites */
1636 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie,
1637 IEEE80211_ACTION_MESHPEERING_OPEN);
1638 if (meshpeer == NULL) {
1639 return 0;
1640 }
1641
1642 /* XXX move up */
1643 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1644 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid);
1645
1646 switch (ni->ni_mlstate) {
1647 case IEEE80211_NODE_MESH_IDLE:
1648 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV);
1649 ni->ni_mllid = meshpeer->peer_llinkid;
1650 ni->ni_mlpid = mesh_generateid(vap);
1651 if (ni->ni_mlpid == 0)
1652 return 0; /* XXX */
1653 args[0] = ni->ni_mlpid;
1654 /* Announce we're open too... */
1655 ieee80211_send_action(ni,
1656 IEEE80211_ACTION_CAT_MESHPEERING,
1657 IEEE80211_ACTION_MESHPEERING_OPEN, args);
1658 /* ...and confirm the link. */
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 mesh_peer_timeout_setup(ni);
1666 break;
1667 case IEEE80211_NODE_MESH_OPENRCV:
1668 /* Wrong Link ID */
1669 if (ni->ni_mllid != meshpeer->peer_llinkid) {
1670 args[0] = ni->ni_mllid;
1671 args[1] = ni->ni_mlpid;
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, IEEE80211_NODE_MESH_HOLDING);
1678 mesh_peer_timeout_setup(ni);
1679 break;
1680 }
1681 /* Duplicate open, confirm again. */
1682 args[0] = ni->ni_mlpid;
1683 args[1] = ni->ni_mllid;
1684 ieee80211_send_action(ni,
1685 IEEE80211_ACTION_CAT_MESHPEERING,
1686 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1687 args);
1688 break;
1689 case IEEE80211_NODE_MESH_OPENSNT:
1690 ni->ni_mllid = meshpeer->peer_llinkid;
1691 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV);
1692 args[0] = ni->ni_mlpid;
1693 args[1] = ni->ni_mllid;
1694 ieee80211_send_action(ni,
1695 IEEE80211_ACTION_CAT_MESHPEERING,
1696 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1697 args);
1698 /* NB: don't setup/clear any timeout */
1699 break;
1700 case IEEE80211_NODE_MESH_CONFIRMRCV:
1701 if (ni->ni_mlpid != meshpeer->peer_linkid ||
1702 ni->ni_mllid != meshpeer->peer_llinkid) {
1703 args[0] = ni->ni_mlpid;
1704 args[1] = ni->ni_mllid;
1705 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1706 ieee80211_send_action(ni,
1707 IEEE80211_ACTION_CAT_MESHPEERING,
1708 IEEE80211_ACTION_MESHPEERING_CLOSE,
1709 args);
1710 mesh_linkchange(ni,
1711 IEEE80211_NODE_MESH_HOLDING);
1712 mesh_peer_timeout_setup(ni);
1713 break;
1714 }
1715 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED);
1716 ni->ni_mllid = meshpeer->peer_llinkid;
1717 args[0] = ni->ni_mlpid;
1718 args[1] = ni->ni_mllid;
1719 ieee80211_send_action(ni,
1720 IEEE80211_ACTION_CAT_MESHPEERING,
1721 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1722 args);
1723 mesh_peer_timeout_stop(ni);
1724 break;
1725 case IEEE80211_NODE_MESH_ESTABLISHED:
1726 if (ni->ni_mllid != meshpeer->peer_llinkid) {
1727 args[0] = ni->ni_mllid;
1728 args[1] = ni->ni_mlpid;
1729 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1730 ieee80211_send_action(ni,
1731 IEEE80211_ACTION_CAT_MESHPEERING,
1732 IEEE80211_ACTION_MESHPEERING_CLOSE,
1733 args);
1734 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1735 mesh_peer_timeout_setup(ni);
1736 break;
1737 }
1738 args[0] = ni->ni_mlpid;
1739 args[1] = ni->ni_mllid;
1740 ieee80211_send_action(ni,
1741 IEEE80211_ACTION_CAT_MESHPEERING,
1742 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1743 args);
1744 break;
1745 case IEEE80211_NODE_MESH_HOLDING:
1746 args[0] = ni->ni_mlpid;
1747 args[1] = meshpeer->peer_llinkid;
1748 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
1749 ieee80211_send_action(ni,
1750 IEEE80211_ACTION_CAT_MESHPEERING,
1751 IEEE80211_ACTION_MESHPEERING_CLOSE,
1752 args);
1753 break;
1754 }
1755 return 0;
1756 }
1757
1758 static int
1759 mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni,
1760 const struct ieee80211_frame *wh,
1761 const uint8_t *frm, const uint8_t *efrm)
1762 {
1763 struct ieee80211vap *vap = ni->ni_vap;
1764 struct ieee80211_meshpeer_ie ie;
1765 const struct ieee80211_meshpeer_ie *meshpeer;
1766 uint16_t args[3];
1767
1768 /* +2+2+2+2 for action + code + capabilites + status code + AID */
1769 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie,
1770 IEEE80211_ACTION_MESHPEERING_CONFIRM);
1771 if (meshpeer == NULL) {
1772 return 0;
1773 }
1774
1775 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1776 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x",
1777 meshpeer->peer_llinkid, meshpeer->peer_linkid);
1778
1779 switch (ni->ni_mlstate) {
1780 case IEEE80211_NODE_MESH_OPENRCV:
1781 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED);
1782 mesh_peer_timeout_stop(ni);
1783 break;
1784 case IEEE80211_NODE_MESH_OPENSNT:
1785 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV);
1786 break;
1787 case IEEE80211_NODE_MESH_HOLDING:
1788 args[0] = ni->ni_mlpid;
1789 args[1] = meshpeer->peer_llinkid;
1790 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
1791 ieee80211_send_action(ni,
1792 IEEE80211_ACTION_CAT_MESHPEERING,
1793 IEEE80211_ACTION_MESHPEERING_CLOSE,
1794 args);
1795 break;
1796 case IEEE80211_NODE_MESH_CONFIRMRCV:
1797 if (ni->ni_mllid != meshpeer->peer_llinkid) {
1798 args[0] = ni->ni_mlpid;
1799 args[1] = ni->ni_mllid;
1800 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1801 ieee80211_send_action(ni,
1802 IEEE80211_ACTION_CAT_MESHPEERING,
1803 IEEE80211_ACTION_MESHPEERING_CLOSE,
1804 args);
1805 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1806 mesh_peer_timeout_setup(ni);
1807 }
1808 break;
1809 default:
1810 IEEE80211_DISCARD(vap,
1811 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
1812 wh, NULL, "received confirm in invalid state %d",
1813 ni->ni_mlstate);
1814 vap->iv_stats.is_rx_mgtdiscard++;
1815 break;
1816 }
1817 return 0;
1818 }
1819
1820 static int
1821 mesh_recv_action_meshpeering_close(struct ieee80211_node *ni,
1822 const struct ieee80211_frame *wh,
1823 const uint8_t *frm, const uint8_t *efrm)
1824 {
1825 uint16_t args[3];
1826
1827 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
1828 ni, "%s", "recv PEER CLOSE");
1829
1830 switch (ni->ni_mlstate) {
1831 case IEEE80211_NODE_MESH_IDLE:
1832 /* ignore */
1833 break;
1834 case IEEE80211_NODE_MESH_OPENRCV:
1835 case IEEE80211_NODE_MESH_OPENSNT:
1836 case IEEE80211_NODE_MESH_CONFIRMRCV:
1837 case IEEE80211_NODE_MESH_ESTABLISHED:
1838 args[0] = ni->ni_mlpid;
1839 args[1] = ni->ni_mllid;
1840 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD;
1841 ieee80211_send_action(ni,
1842 IEEE80211_ACTION_CAT_MESHPEERING,
1843 IEEE80211_ACTION_MESHPEERING_CLOSE,
1844 args);
1845 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1846 mesh_peer_timeout_setup(ni);
1847 break;
1848 case IEEE80211_NODE_MESH_HOLDING:
1849 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE);
1850 mesh_peer_timeout_setup(ni);
1851 break;
1852 }
1853 return 0;
1854 }
1855
1856 /*
1857 * Link Metric handling.
1858 */
1859 static int
1860 mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni,
1861 const struct ieee80211_frame *wh,
1862 const uint8_t *frm, const uint8_t *efrm)
1863 {
1864 uint32_t metric;
1865
1866 metric = mesh_airtime_calc(ni);
1867 ieee80211_send_action(ni,
1868 IEEE80211_ACTION_CAT_MESHLMETRIC,
1869 IEEE80211_ACTION_MESHLMETRIC_REP,
1870 &metric);
1871 return 0;
1872 }
1873
1874 static int
1875 mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni,
1876 const struct ieee80211_frame *wh,
1877 const uint8_t *frm, const uint8_t *efrm)
1878 {
1879 return 0;
1880 }
1881
1882 static int
1883 mesh_send_action(struct ieee80211_node *ni, struct mbuf *m)
1884 {
1885 struct ieee80211_bpf_params params;
1886
1887 memset(¶ms, 0, sizeof(params));
1888 params.ibp_pri = WME_AC_VO;
1889 params.ibp_rate0 = ni->ni_txparms->mgmtrate;
1890 /* XXX ucast/mcast */
1891 params.ibp_try0 = ni->ni_txparms->maxretry;
1892 params.ibp_power = ni->ni_txpower;
1893 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION,
1894 ¶ms);
1895 }
1896
1897 #define ADDSHORT(frm, v) do { \
1898 frm[0] = (v) & 0xff; \
1899 frm[1] = (v) >> 8; \
1900 frm += 2; \
1901 } while (0)
1902 #define ADDWORD(frm, v) do { \
1903 frm[0] = (v) & 0xff; \
1904 frm[1] = ((v) >> 8) & 0xff; \
1905 frm[2] = ((v) >> 16) & 0xff; \
1906 frm[3] = ((v) >> 24) & 0xff; \
1907 frm += 4; \
1908 } while (0)
1909
1910 static int
1911 mesh_send_action_meshpeering_open(struct ieee80211_node *ni,
1912 int category, int action, void *args0)
1913 {
1914 struct ieee80211vap *vap = ni->ni_vap;
1915 struct ieee80211com *ic = ni->ni_ic;
1916 uint16_t *args = args0;
1917 const struct ieee80211_rateset *rs;
1918 struct mbuf *m;
1919 uint8_t *frm;
1920
1921 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1922 "send PEER OPEN action: localid 0x%x", args[0]);
1923
1924 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1925 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
1926 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
1927 ieee80211_ref_node(ni);
1928
1929 m = ieee80211_getmgtframe(&frm,
1930 ic->ic_headroom + sizeof(struct ieee80211_frame),
1931 sizeof(uint16_t) /* action+category */
1932 + sizeof(uint16_t) /* capabilites */
1933 + 2 + IEEE80211_RATE_SIZE
1934 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE)
1935 + 2 + IEEE80211_MESHID_LEN
1936 + sizeof(struct ieee80211_meshconf_ie)
1937 + sizeof(struct ieee80211_meshpeer_ie)
1938 );
1939 if (m != NULL) {
1940 /*
1941 * mesh peer open action frame format:
1942 * [1] category
1943 * [1] action
1944 * [2] capabilities
1945 * [tlv] rates
1946 * [tlv] xrates
1947 * [tlv] mesh id
1948 * [tlv] mesh conf
1949 * [tlv] mesh peer link mgmt
1950 */
1951 *frm++ = category;
1952 *frm++ = action;
1953 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan));
1954 rs = ieee80211_get_suprates(ic, ic->ic_curchan);
1955 frm = ieee80211_add_rates(frm, rs);
1956 frm = ieee80211_add_xrates(frm, rs);
1957 frm = ieee80211_add_meshid(frm, vap);
1958 frm = ieee80211_add_meshconf(frm, vap);
1959 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN,
1960 args[0], 0, 0);
1961 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
1962 return mesh_send_action(ni, m);
1963 } else {
1964 vap->iv_stats.is_tx_nobuf++;
1965 ieee80211_free_node(ni);
1966 return ENOMEM;
1967 }
1968 }
1969
1970 static int
1971 mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni,
1972 int category, int action, void *args0)
1973 {
1974 struct ieee80211vap *vap = ni->ni_vap;
1975 struct ieee80211com *ic = ni->ni_ic;
1976 uint16_t *args = args0;
1977 const struct ieee80211_rateset *rs;
1978 struct mbuf *m;
1979 uint8_t *frm;
1980
1981 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1982 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x",
1983 args[0], args[1]);
1984
1985 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1986 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
1987 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
1988 ieee80211_ref_node(ni);
1989
1990 m = ieee80211_getmgtframe(&frm,
1991 ic->ic_headroom + sizeof(struct ieee80211_frame),
1992 sizeof(uint16_t) /* action+category */
1993 + sizeof(uint16_t) /* capabilites */
1994 + sizeof(uint16_t) /* status code */
1995 + sizeof(uint16_t) /* AID */
1996 + 2 + IEEE80211_RATE_SIZE
1997 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE)
1998 + 2 + IEEE80211_MESHID_LEN
1999 + sizeof(struct ieee80211_meshconf_ie)
2000 + sizeof(struct ieee80211_meshpeer_ie)
2001 );
2002 if (m != NULL) {
2003 /*
2004 * mesh peer confirm action frame format:
2005 * [1] category
2006 * [1] action
2007 * [2] capabilities
2008 * [2] status code
2009 * [2] association id (peer ID)
2010 * [tlv] rates
2011 * [tlv] xrates
2012 * [tlv] mesh id
2013 * [tlv] mesh conf
2014 * [tlv] mesh peer link mgmt
2015 */
2016 *frm++ = category;
2017 *frm++ = action;
2018 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan));
2019 ADDSHORT(frm, 0); /* status code */
2020 ADDSHORT(frm, args[1]); /* AID */
2021 rs = ieee80211_get_suprates(ic, ic->ic_curchan);
2022 frm = ieee80211_add_rates(frm, rs);
2023 frm = ieee80211_add_xrates(frm, rs);
2024 frm = ieee80211_add_meshid(frm, vap);
2025 frm = ieee80211_add_meshconf(frm, vap);
2026 frm = ieee80211_add_meshpeer(frm,
2027 IEEE80211_MESH_PEER_LINK_CONFIRM,
2028 args[0], args[1], 0);
2029 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
2030 return mesh_send_action(ni, m);
2031 } else {
2032 vap->iv_stats.is_tx_nobuf++;
2033 ieee80211_free_node(ni);
2034 return ENOMEM;
2035 }
2036 }
2037
2038 static int
2039 mesh_send_action_meshpeering_close(struct ieee80211_node *ni,
2040 int category, int action, void *args0)
2041 {
2042 struct ieee80211vap *vap = ni->ni_vap;
2043 struct ieee80211com *ic = ni->ni_ic;
2044 uint16_t *args = args0;
2045 struct mbuf *m;
2046 uint8_t *frm;
2047
2048 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
2049 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d",
2050 args[0], args[1], args[2]);
2051
2052 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
2053 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
2054 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
2055 ieee80211_ref_node(ni);
2056
2057 m = ieee80211_getmgtframe(&frm,
2058 ic->ic_headroom + sizeof(struct ieee80211_frame),
2059 sizeof(uint16_t) /* action+category */
2060 + sizeof(uint16_t) /* reason code */
2061 + 2 + IEEE80211_MESHID_LEN
2062 + sizeof(struct ieee80211_meshpeer_ie)
2063 );
2064 if (m != NULL) {
2065 /*
2066 * mesh peer close action frame format:
2067 * [1] category
2068 * [1] action
2069 * [2] reason code
2070 * [tlv] mesh id
2071 * [tlv] mesh peer link mgmt
2072 */
2073 *frm++ = category;
2074 *frm++ = action;
2075 ADDSHORT(frm, args[2]); /* reason code */
2076 frm = ieee80211_add_meshid(frm, vap);
2077 frm = ieee80211_add_meshpeer(frm,
2078 IEEE80211_MESH_PEER_LINK_CLOSE,
2079 args[0], args[1], args[2]);
2080 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
2081 return mesh_send_action(ni, m);
2082 } else {
2083 vap->iv_stats.is_tx_nobuf++;
2084 ieee80211_free_node(ni);
2085 return ENOMEM;
2086 }
2087 }
2088
2089 static int
2090 mesh_send_action_meshlink_request(struct ieee80211_node *ni,
2091 int category, int action, void *arg0)
2092 {
2093 struct ieee80211vap *vap = ni->ni_vap;
2094 struct ieee80211com *ic = ni->ni_ic;
2095 struct mbuf *m;
2096 uint8_t *frm;
2097
2098 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
2099 "%s", "send LINK METRIC REQUEST action");
2100
2101 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
2102 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
2103 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
2104 ieee80211_ref_node(ni);
2105
2106 m = ieee80211_getmgtframe(&frm,
2107 ic->ic_headroom + sizeof(struct ieee80211_frame),
2108 sizeof(uint16_t) /* action+category */
2109 );
2110 if (m != NULL) {
2111 /*
2112 * mesh link metric request
2113 * [1] category
2114 * [1] action
2115 */
2116 *frm++ = category;
2117 *frm++ = action;
2118 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
2119 return mesh_send_action(ni, m);
2120 } else {
2121 vap->iv_stats.is_tx_nobuf++;
2122 ieee80211_free_node(ni);
2123 return ENOMEM;
2124 }
2125 }
2126
2127 static int
2128 mesh_send_action_meshlink_reply(struct ieee80211_node *ni,
2129 int category, int action, void *args0)
2130 {
2131 struct ieee80211vap *vap = ni->ni_vap;
2132 struct ieee80211com *ic = ni->ni_ic;
2133 uint32_t *metric = args0;
2134 struct mbuf *m;
2135 uint8_t *frm;
2136
2137 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
2138 "send LINK METRIC REPLY action: metric 0x%x", *metric);
2139
2140 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
2141 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
2142 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
2143 ieee80211_ref_node(ni);
2144
2145 m = ieee80211_getmgtframe(&frm,
2146 ic->ic_headroom + sizeof(struct ieee80211_frame),
2147 sizeof(uint16_t) /* action+category */
2148 + sizeof(struct ieee80211_meshlmetric_ie)
2149 );
2150 if (m != NULL) {
2151 /*
2152 * mesh link metric reply
2153 * [1] category
2154 * [1] action
2155 * [tlv] mesh link metric
2156 */
2157 *frm++ = category;
2158 *frm++ = action;
2159 frm = ieee80211_add_meshlmetric(frm, *metric);
2160 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
2161 return mesh_send_action(ni, m);
2162 } else {
2163 vap->iv_stats.is_tx_nobuf++;
2164 ieee80211_free_node(ni);
2165 return ENOMEM;
2166 }
2167 }
2168
2169 static void
2170 mesh_peer_timeout_setup(struct ieee80211_node *ni)
2171 {
2172 switch (ni->ni_mlstate) {
2173 case IEEE80211_NODE_MESH_HOLDING:
2174 ni->ni_mltval = ieee80211_mesh_holdingtimeout;
2175 break;
2176 case IEEE80211_NODE_MESH_CONFIRMRCV:
2177 ni->ni_mltval = ieee80211_mesh_confirmtimeout;
2178 break;
2179 case IEEE80211_NODE_MESH_IDLE:
2180 ni->ni_mltval = 0;
2181 break;
2182 default:
2183 ni->ni_mltval = ieee80211_mesh_retrytimeout;
2184 break;
2185 }
2186 if (ni->ni_mltval)
2187 callout_reset(&ni->ni_mltimer, ni->ni_mltval,
2188 mesh_peer_timeout_cb, ni);
2189 }
2190
2191 /*
2192 * Same as above but backoffs timer statisically 50%.
2193 */
2194 static void
2195 mesh_peer_timeout_backoff(struct ieee80211_node *ni)
2196 {
2197 uint32_t r;
2198
2199 r = arc4random();
2200 ni->ni_mltval += r % ni->ni_mltval;
2201 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb,
2202 ni);
2203 }
2204
2205 static __inline void
2206 mesh_peer_timeout_stop(struct ieee80211_node *ni)
2207 {
2208 callout_drain(&ni->ni_mltimer);
2209 }
2210
2211 /*
2212 * Mesh Peer Link Management FSM timeout handling.
2213 */
2214 static void
2215 mesh_peer_timeout_cb(void *arg)
2216 {
2217 struct ieee80211_node *ni = (struct ieee80211_node *)arg;
2218 uint16_t args[3];
2219
2220 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH,
2221 ni, "mesh link timeout, state %d, retry counter %d",
2222 ni->ni_mlstate, ni->ni_mlrcnt);
2223
2224 switch (ni->ni_mlstate) {
2225 case IEEE80211_NODE_MESH_IDLE:
2226 case IEEE80211_NODE_MESH_ESTABLISHED:
2227 break;
2228 case IEEE80211_NODE_MESH_OPENSNT:
2229 case IEEE80211_NODE_MESH_OPENRCV:
2230 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) {
2231 args[0] = ni->ni_mlpid;
2232 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
2233 ieee80211_send_action(ni,
2234 IEEE80211_ACTION_CAT_MESHPEERING,
2235 IEEE80211_ACTION_MESHPEERING_CLOSE, args);
2236 ni->ni_mlrcnt = 0;
2237 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
2238 mesh_peer_timeout_setup(ni);
2239 } else {
2240 args[0] = ni->ni_mlpid;
2241 ieee80211_send_action(ni,
2242 IEEE80211_ACTION_CAT_MESHPEERING,
2243 IEEE80211_ACTION_MESHPEERING_OPEN, args);
2244 ni->ni_mlrcnt++;
2245 mesh_peer_timeout_backoff(ni);
2246 }
2247 break;
2248 case IEEE80211_NODE_MESH_CONFIRMRCV:
2249 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) {
2250 args[0] = ni->ni_mlpid;
2251 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT;
2252 ieee80211_send_action(ni,
2253 IEEE80211_ACTION_CAT_MESHPEERING,
2254 IEEE80211_ACTION_MESHPEERING_CLOSE, args);
2255 ni->ni_mlrcnt = 0;
2256 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
2257 mesh_peer_timeout_setup(ni);
2258 } else {
2259 ni->ni_mlrcnt++;
2260 mesh_peer_timeout_setup(ni);
2261 }
2262 break;
2263 case IEEE80211_NODE_MESH_HOLDING:
2264 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE);
2265 break;
2266 }
2267 }
2268
2269 static int
2270 mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie)
2271 {
2272 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2273
2274 if (ie == NULL || ie[1] != ms->ms_idlen)
2275 return 1;
2276 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen);
2277 }
2278
2279 /*
2280 * Check if we are using the same algorithms for this mesh.
2281 */
2282 static int
2283 mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie)
2284 {
2285 const struct ieee80211_meshconf_ie *meshconf =
2286 (const struct ieee80211_meshconf_ie *) ie;
2287 const struct ieee80211_mesh_state *ms = vap->iv_mesh;
2288
2289 if (meshconf == NULL)
2290 return 1;
2291 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) {
2292 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2293 "unknown path selection algorithm: 0x%x\n",
2294 meshconf->conf_pselid);
2295 return 1;
2296 }
2297 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) {
2298 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2299 "unknown path metric algorithm: 0x%x\n",
2300 meshconf->conf_pmetid);
2301 return 1;
2302 }
2303 if (meshconf->conf_ccid != 0) {
2304 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2305 "unknown congestion control algorithm: 0x%x\n",
2306 meshconf->conf_ccid);
2307 return 1;
2308 }
2309 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) {
2310 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2311 "unknown sync algorithm: 0x%x\n",
2312 meshconf->conf_syncid);
2313 return 1;
2314 }
2315 if (meshconf->conf_authid != 0) {
2316 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2317 "unknown auth auth algorithm: 0x%x\n",
2318 meshconf->conf_pselid);
2319 return 1;
2320 }
2321 /* Not accepting peers */
2322 if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) {
2323 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2324 "not accepting peers: 0x%x\n", meshconf->conf_cap);
2325 return 1;
2326 }
2327 return 0;
2328 }
2329
2330 static int
2331 mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype,
2332 const uint8_t *ie)
2333 {
2334 const struct ieee80211_meshpeer_ie *meshpeer =
2335 (const struct ieee80211_meshpeer_ie *) ie;
2336
2337 if (meshpeer == NULL || meshpeer->peer_len < 6 ||
2338 meshpeer->peer_len > 10)
2339 return 1;
2340 switch (subtype) {
2341 case IEEE80211_MESH_PEER_LINK_OPEN:
2342 if (meshpeer->peer_len != 6)
2343 return 1;
2344 break;
2345 case IEEE80211_MESH_PEER_LINK_CONFIRM:
2346 if (meshpeer->peer_len != 8)
2347 return 1;
2348 break;
2349 case IEEE80211_MESH_PEER_LINK_CLOSE:
2350 if (meshpeer->peer_len < 8)
2351 return 1;
2352 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0)
2353 return 1;
2354 if (meshpeer->peer_rcode == 0)
2355 return 1;
2356 break;
2357 }
2358 return 0;
2359 }
2360
2361 /*
2362 * Add a Mesh ID IE to a frame.
2363 */
2364 uint8_t *
2365 ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap)
2366 {
2367 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2368
2369 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap"));
2370
2371 *frm++ = IEEE80211_ELEMID_MESHID;
2372 *frm++ = ms->ms_idlen;
2373 memcpy(frm, ms->ms_id, ms->ms_idlen);
2374 return frm + ms->ms_idlen;
2375 }
2376
2377 /*
2378 * Add a Mesh Configuration IE to a frame.
2379 * For now just use HWMP routing, Airtime link metric, Null Congestion
2380 * Signaling, Null Sync Protocol and Null Authentication.
2381 */
2382 uint8_t *
2383 ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap)
2384 {
2385 const struct ieee80211_mesh_state *ms = vap->iv_mesh;
2386
2387 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap"));
2388
2389 *frm++ = IEEE80211_ELEMID_MESHCONF;
2390 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2;
2391 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */
2392 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */
2393 *frm++ = IEEE80211_MESHCONF_CC_DISABLED;
2394 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF;
2395 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED;
2396 /* NB: set the number of neighbors before the rest */
2397 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1;
2398 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL)
2399 *frm |= IEEE80211_MESHCONF_FORM_MP;
2400 frm += 1;
2401 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP)
2402 *frm |= IEEE80211_MESHCONF_CAP_AP;
2403 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD)
2404 *frm |= IEEE80211_MESHCONF_CAP_FWRD;
2405 frm += 1;
2406 return frm;
2407 }
2408
2409 /*
2410 * Add a Mesh Peer Management IE to a frame.
2411 */
2412 uint8_t *
2413 ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid,
2414 uint16_t peerid, uint16_t reason)
2415 {
2416 /* XXX change for AH */
2417 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO;
2418
2419 KASSERT(localid != 0, ("localid == 0"));
2420
2421 *frm++ = IEEE80211_ELEMID_MESHPEER;
2422 switch (subtype) {
2423 case IEEE80211_MESH_PEER_LINK_OPEN:
2424 *frm++ = 6; /* length */
2425 memcpy(frm, meshpeerproto, 4);
2426 frm += 4;
2427 ADDSHORT(frm, localid); /* local ID */
2428 break;
2429 case IEEE80211_MESH_PEER_LINK_CONFIRM:
2430 KASSERT(peerid != 0, ("sending peer confirm without peer id"));
2431 *frm++ = 8; /* length */
2432 memcpy(frm, meshpeerproto, 4);
2433 frm += 4;
2434 ADDSHORT(frm, localid); /* local ID */
2435 ADDSHORT(frm, peerid); /* peer ID */
2436 break;
2437 case IEEE80211_MESH_PEER_LINK_CLOSE:
2438 if (peerid)
2439 *frm++ = 10; /* length */
2440 else
2441 *frm++ = 8; /* length */
2442 memcpy(frm, meshpeerproto, 4);
2443 frm += 4;
2444 ADDSHORT(frm, localid); /* local ID */
2445 if (peerid)
2446 ADDSHORT(frm, peerid); /* peer ID */
2447 ADDSHORT(frm, reason);
2448 break;
2449 }
2450 return frm;
2451 }
2452
2453 /*
2454 * Compute an Airtime Link Metric for the link with this node.
2455 *
2456 * Based on Draft 3.0 spec (11B.10, p.149).
2457 */
2458 /*
2459 * Max 802.11s overhead.
2460 */
2461 #define IEEE80211_MESH_MAXOVERHEAD \
2462 (sizeof(struct ieee80211_qosframe_addr4) \
2463 + sizeof(struct ieee80211_meshcntl_ae11) \
2464 + sizeof(struct llc) \
2465 + IEEE80211_ADDR_LEN \
2466 + IEEE80211_WEP_IVLEN \
2467 + IEEE80211_WEP_KIDLEN \
2468 + IEEE80211_WEP_CRCLEN \
2469 + IEEE80211_WEP_MICLEN \
2470 + IEEE80211_CRC_LEN)
2471 uint32_t
2472 mesh_airtime_calc(struct ieee80211_node *ni)
2473 {
2474 #define M_BITS 8
2475 #define S_FACTOR (2 * M_BITS)
2476 struct ieee80211com *ic = ni->ni_ic;
2477 struct ifnet *ifp = ni->ni_vap->iv_ifp;
2478 const static int nbits = 8192 << M_BITS;
2479 uint32_t overhead, rate, errrate;
2480 uint64_t res;
2481
2482 /* Time to transmit a frame */
2483 rate = ni->ni_txrate;
2484 overhead = ieee80211_compute_duration(ic->ic_rt,
2485 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS;
2486 /* Error rate in percentage */
2487 /* XXX assuming small failures are ok */
2488 errrate = (((ifp->if_oerrors +
2489 ifp->if_ierrors) / 100) << M_BITS) / 100;
2490 res = (overhead + (nbits / rate)) *
2491 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate));
2492
2493 return (uint32_t)(res >> S_FACTOR);
2494 #undef M_BITS
2495 #undef S_FACTOR
2496 }
2497
2498 /*
2499 * Add a Mesh Link Metric report IE to a frame.
2500 */
2501 uint8_t *
2502 ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric)
2503 {
2504 *frm++ = IEEE80211_ELEMID_MESHLINK;
2505 *frm++ = 4;
2506 ADDWORD(frm, metric);
2507 return frm;
2508 }
2509 #undef ADDSHORT
2510 #undef ADDWORD
2511
2512 /*
2513 * Initialize any mesh-specific node state.
2514 */
2515 void
2516 ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni)
2517 {
2518 ni->ni_flags |= IEEE80211_NODE_QOS;
2519 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE);
2520 }
2521
2522 /*
2523 * Cleanup any mesh-specific node state.
2524 */
2525 void
2526 ieee80211_mesh_node_cleanup(struct ieee80211_node *ni)
2527 {
2528 struct ieee80211vap *vap = ni->ni_vap;
2529 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2530
2531 callout_drain(&ni->ni_mltimer);
2532 /* NB: short-circuit callbacks after mesh_vdetach */
2533 if (vap->iv_mesh != NULL)
2534 ms->ms_ppath->mpp_peerdown(ni);
2535 }
2536
2537 void
2538 ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie)
2539 {
2540 ni->ni_meshidlen = ie[1];
2541 memcpy(ni->ni_meshid, ie + 2, ie[1]);
2542 }
2543
2544 /*
2545 * Setup mesh-specific node state on neighbor discovery.
2546 */
2547 void
2548 ieee80211_mesh_init_neighbor(struct ieee80211_node *ni,
2549 const struct ieee80211_frame *wh,
2550 const struct ieee80211_scanparams *sp)
2551 {
2552 ieee80211_parse_meshid(ni, sp->meshid);
2553 }
2554
2555 static int
2556 mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
2557 {
2558 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2559 uint8_t tmpmeshid[IEEE80211_NWID_LEN];
2560 struct ieee80211_mesh_route *rt;
2561 struct ieee80211req_mesh_route *imr;
2562 size_t len, off;
2563 uint8_t *p;
2564 int error;
2565
2566 if (vap->iv_opmode != IEEE80211_M_MBSS)
2567 return ENOSYS;
2568
2569 error = 0;
2570 switch (ireq->i_type) {
2571 case IEEE80211_IOC_MESH_ID:
2572 ireq->i_len = ms->ms_idlen;
2573 memcpy(tmpmeshid, ms->ms_id, ireq->i_len);
2574 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len);
2575 break;
2576 case IEEE80211_IOC_MESH_AP:
2577 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0;
2578 break;
2579 case IEEE80211_IOC_MESH_FWRD:
2580 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0;
2581 break;
2582 case IEEE80211_IOC_MESH_TTL:
2583 ireq->i_val = ms->ms_ttl;
2584 break;
2585 case IEEE80211_IOC_MESH_RTCMD:
2586 switch (ireq->i_val) {
2587 case IEEE80211_MESH_RTCMD_LIST:
2588 len = 0;
2589 MESH_RT_LOCK(ms);
2590 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
2591 len += sizeof(*imr);
2592 }
2593 MESH_RT_UNLOCK(ms);
2594 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) {
2595 ireq->i_len = len;
2596 return ENOMEM;
2597 }
2598 ireq->i_len = len;
2599 /* XXX M_WAIT? */
2600 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO);
2601 if (p == NULL)
2602 return ENOMEM;
2603 off = 0;
2604 MESH_RT_LOCK(ms);
2605 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
2606 if (off >= len)
2607 break;
2608 imr = (struct ieee80211req_mesh_route *)
2609 (p + off);
2610 imr->imr_flags = rt->rt_flags;
2611 IEEE80211_ADDR_COPY(imr->imr_dest,
2612 rt->rt_dest);
2613 IEEE80211_ADDR_COPY(imr->imr_nexthop,
2614 rt->rt_nexthop);
2615 imr->imr_metric = rt->rt_metric;
2616 imr->imr_nhops = rt->rt_nhops;
2617 imr->imr_lifetime = rt->rt_lifetime;
2618 imr->imr_lastmseq = rt->rt_lastmseq;
2619 off += sizeof(*imr);
2620 }
2621 MESH_RT_UNLOCK(ms);
2622 error = copyout(p, (uint8_t *)ireq->i_data,
2623 ireq->i_len);
2624 free(p, M_TEMP);
2625 break;
2626 case IEEE80211_MESH_RTCMD_FLUSH:
2627 case IEEE80211_MESH_RTCMD_ADD:
2628 case IEEE80211_MESH_RTCMD_DELETE:
2629 return EINVAL;
2630 default:
2631 return ENOSYS;
2632 }
2633 break;
2634 case IEEE80211_IOC_MESH_PR_METRIC:
2635 len = strlen(ms->ms_pmetric->mpm_descr);
2636 if (ireq->i_len < len)
2637 return EINVAL;
2638 ireq->i_len = len;
2639 error = copyout(ms->ms_pmetric->mpm_descr,
2640 (uint8_t *)ireq->i_data, len);
2641 break;
2642 case IEEE80211_IOC_MESH_PR_PATH:
2643 len = strlen(ms->ms_ppath->mpp_descr);
2644 if (ireq->i_len < len)
2645 return EINVAL;
2646 ireq->i_len = len;
2647 error = copyout(ms->ms_ppath->mpp_descr,
2648 (uint8_t *)ireq->i_data, len);
2649 break;
2650 default:
2651 return ENOSYS;
2652 }
2653
2654 return error;
2655 }
2656 IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211);
2657
2658 static int
2659 mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
2660 {
2661 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2662 uint8_t tmpmeshid[IEEE80211_NWID_LEN];
2663 uint8_t tmpaddr[IEEE80211_ADDR_LEN];
2664 char tmpproto[IEEE80211_MESH_PROTO_DSZ];
2665 int error;
2666
2667 if (vap->iv_opmode != IEEE80211_M_MBSS)
2668 return ENOSYS;
2669
2670 error = 0;
2671 switch (ireq->i_type) {
2672 case IEEE80211_IOC_MESH_ID:
2673 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN)
2674 return EINVAL;
2675 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len);
2676 if (error != 0)
2677 break;
2678 memset(ms->ms_id, 0, IEEE80211_NWID_LEN);
2679 ms->ms_idlen = ireq->i_len;
2680 memcpy(ms->ms_id, tmpmeshid, ireq->i_len);
2681 error = ENETRESET;
2682 break;
2683 case IEEE80211_IOC_MESH_AP:
2684 if (ireq->i_val)
2685 ms->ms_flags |= IEEE80211_MESHFLAGS_AP;
2686 else
2687 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP;
2688 error = ENETRESET;
2689 break;
2690 case IEEE80211_IOC_MESH_FWRD:
2691 if (ireq->i_val)
2692 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD;
2693 else
2694 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD;
2695 break;
2696 case IEEE80211_IOC_MESH_TTL:
2697 ms->ms_ttl = (uint8_t) ireq->i_val;
2698 break;
2699 case IEEE80211_IOC_MESH_RTCMD:
2700 switch (ireq->i_val) {
2701 case IEEE80211_MESH_RTCMD_LIST:
2702 return EINVAL;
2703 case IEEE80211_MESH_RTCMD_FLUSH:
2704 ieee80211_mesh_rt_flush(vap);
2705 break;
2706 case IEEE80211_MESH_RTCMD_ADD:
2707 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) ||
2708 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data))
2709 return EINVAL;
2710 error = copyin(ireq->i_data, &tmpaddr,
2711 IEEE80211_ADDR_LEN);
2712 if (error == 0)
2713 ieee80211_mesh_discover(vap, tmpaddr, NULL);
2714 break;
2715 case IEEE80211_MESH_RTCMD_DELETE:
2716 ieee80211_mesh_rt_del(vap, ireq->i_data);
2717 break;
2718 default:
2719 return ENOSYS;
2720 }
2721 break;
2722 case IEEE80211_IOC_MESH_PR_METRIC:
2723 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto));
2724 if (error == 0) {
2725 error = mesh_select_proto_metric(vap, tmpproto);
2726 if (error == 0)
2727 error = ENETRESET;
2728 }
2729 break;
2730 case IEEE80211_IOC_MESH_PR_PATH:
2731 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto));
2732 if (error == 0) {
2733 error = mesh_select_proto_path(vap, tmpproto);
2734 if (error == 0)
2735 error = ENETRESET;
2736 }
2737 break;
2738 default:
2739 return ENOSYS;
2740 }
2741 return error;
2742 }
2743 IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211);
Cache object: 9b7ac865afab473e46562ccc30962769
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