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Remove empty DragonFly CVS IDs.
[dragonfly.git] / sys / netproto / 802_11 / wlan / ieee80211_mesh.c
blob38c396412b79b399ba8933e43802f8d4b1479394
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 $
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
64 static void mesh_rt_flush_invalid(struct ieee80211vap *);
65 static int mesh_select_proto_path(struct ieee80211vap *, const char *);
66 static int mesh_select_proto_metric(struct ieee80211vap *, const char *);
67 static void mesh_vattach(struct ieee80211vap *);
68 static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int);
69 static void mesh_rt_cleanup_callout(void *);
70 static void mesh_linkchange(struct ieee80211_node *,
71 enum ieee80211_mesh_mlstate);
72 static void mesh_checkid(void *, struct ieee80211_node *);
73 static uint32_t mesh_generateid(struct ieee80211vap *);
74 static int mesh_checkpseq(struct ieee80211vap *,
75 const uint8_t [IEEE80211_ADDR_LEN], uint32_t);
76 static struct ieee80211_node *
77 mesh_find_txnode(struct ieee80211vap *,
78 const uint8_t [IEEE80211_ADDR_LEN]);
79 static void mesh_forward(struct ieee80211vap *, struct mbuf *,
80 const struct ieee80211_meshcntl *);
81 static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int);
82 static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int,
83 int, int);
84 static void mesh_peer_timeout_setup(struct ieee80211_node *);
85 static void mesh_peer_timeout_backoff(struct ieee80211_node *);
86 static void mesh_peer_timeout_callout(void *);
87 static __inline void
88 mesh_peer_timeout_stop(struct ieee80211_node *);
89 static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *);
90 static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *);
91 static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t,
92 const uint8_t *);
93 uint32_t mesh_airtime_calc(struct ieee80211_node *);
94
95 /*
96 * Timeout values come from the specification and are in milliseconds.
97 */
98 SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0,
99 "IEEE 802.11s parameters");
100 static int ieee80211_mesh_retrytimeout = -1;
101 SYSCTL_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)");
104 static int ieee80211_mesh_holdingtimeout = -1;
105 SYSCTL_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)");
108 static int ieee80211_mesh_confirmtimeout = -1;
109 SYSCTL_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)");
112 static int ieee80211_mesh_maxretries = 2;
113 SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW,
114 &ieee80211_mesh_maxretries, 0,
115 "Maximum retries during peer link establishment");
116
117 static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] =
118 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
119
120 static ieee80211_recv_action_func mesh_recv_action_meshpeering_open;
121 static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm;
122 static ieee80211_recv_action_func mesh_recv_action_meshpeering_close;
123 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req;
124 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep;
125
126 static ieee80211_send_action_func mesh_send_action_meshpeering_open;
127 static ieee80211_send_action_func mesh_send_action_meshpeering_confirm;
128 static ieee80211_send_action_func mesh_send_action_meshpeering_close;
129 static ieee80211_send_action_func mesh_send_action_meshlink_request;
130 static ieee80211_send_action_func mesh_send_action_meshlink_reply;
131
132 static 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
138 static struct ieee80211_mesh_proto_path mesh_proto_paths[4];
139 static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4];
140
141 MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table");
142
143 /*
144 * Helper functions to manipulate the Mesh routing table.
145 */
146
147 static struct ieee80211_mesh_route *
148 mesh_rt_find_locked(struct ieee80211_mesh_state *ms,
149 const uint8_t dest[IEEE80211_ADDR_LEN])
150 {
151 struct ieee80211_mesh_route *rt;
152
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
160 static struct ieee80211_mesh_route *
161 mesh_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
169 rt = kmalloc(ALIGN(sizeof(struct ieee80211_mesh_route)) +
170 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_INTWAIT | M_ZERO);
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
180 struct ieee80211_mesh_route *
181 ieee80211_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
187 rt = mesh_rt_find_locked(ms, dest);
188 return rt;
189 }
190
191 struct ieee80211_mesh_route *
192 ieee80211_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
203 rt = mesh_rt_add_locked(ms, dest);
204 return rt;
205 }
206
207 /*
208 * Add a proxy route (as needed) for the specified destination.
209 */
210 void
211 ieee80211_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
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 }
250 }
251
252 static __inline void
253 mesh_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
259 void
260 ieee80211_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
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);
269 return;
270 }
271 }
272 }
273
274 void
275 ieee80211_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;
282 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next)
283 mesh_rt_del(ms, rt);
284 }
285
286 void
287 ieee80211_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
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 }
297 }
298
299 /*
300 * Flush expired routing entries, i.e. those in invalid state for
301 * some time.
302 */
303 static void
304 mesh_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;
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 }
316 }
317
318 int
319 ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp)
320 {
321 int i, firstempty = -1;
322
323 for (i = 0; i < NELEM(mesh_proto_paths); i++) {
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
337 int
338 ieee80211_mesh_register_proto_metric(const struct
339 ieee80211_mesh_proto_metric *mpm)
340 {
341 int i, firstempty = -1;
342
343 for (i = 0; i < NELEM(mesh_proto_metrics); i++) {
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
357 static int
358 mesh_select_proto_path(struct ieee80211vap *vap, const char *name)
359 {
360 struct ieee80211_mesh_state *ms = vap->iv_mesh;
361 int i;
362
363 for (i = 0; i < NELEM(mesh_proto_paths); i++) {
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
372 static int
373 mesh_select_proto_metric(struct ieee80211vap *vap, const char *name)
374 {
375 struct ieee80211_mesh_state *ms = vap->iv_mesh;
376 int i;
377
378 for (i = 0; i < NELEM(mesh_proto_metrics); i++) {
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 }
386
387 static void
388 ieee80211_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 }
440 SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL);
441
442 void
443 ieee80211_mesh_attach(struct ieee80211com *ic)
444 {
445 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach;
446 }
447
448 void
449 ieee80211_mesh_detach(struct ieee80211com *ic)
450 {
451 }
452
453 static void
454 mesh_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 }
468 callout_stop(&ni->ni_mltimer);
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
474 static void
475 mesh_vdetach(struct ieee80211vap *vap)
476 {
477 struct ieee80211_mesh_state *ms = vap->iv_mesh;
478
479 callout_stop(&ms->ms_cleantimer);
480 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers,
481 NULL);
482 ieee80211_mesh_rt_flush(vap);
483 ms->ms_ppath->mpp_vdetach(vap);
484 kfree(vap->iv_mesh, M_80211_VAP);
485 vap->iv_mesh = NULL;
486 }
487
488 static void
489 mesh_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,
497 M_INTWAIT | M_ZERO);
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);
507 callout_init_mp(&ms->ms_cleantimer);
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 */
518 static int
519 mesh_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
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)
535 callout_stop(&ms->ms_cleantimer);
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,
644 "synchronized with %6D meshid ",
645 ni->ni_meshid, ":");
646 ieee80211_print_essid(ni->ni_meshid,
647 ni->ni_meshidlen);
648 /* XXX MCS/HT */
649 kprintf(" channel %d\n",
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,
659 mesh_rt_cleanup_callout, vap);
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
669 static void
670 mesh_rt_cleanup_callout(void *arg)
671 {
672 struct ieee80211vap *vap = arg;
673 struct ieee80211_mesh_state *ms = vap->iv_mesh;
674
675 wlan_serialize_enter();
676 mesh_rt_flush_invalid(vap);
677 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact,
678 mesh_rt_cleanup_callout, vap);
679 wlan_serialize_exit();
680 }
681
682
683 /*
684 * Helper function to note the Mesh Peer Link FSM change.
685 */
686 static void
687 mesh_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 */
734 static void
735 mesh_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
743 static uint32_t
744 mesh_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 */
762 static int
763 mesh_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 */
793 static struct ieee80211_node *
794 mesh_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 */
816 static void
817 mesh_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;
890 err = ieee80211_handoff(parent, mcopy);
891 if (err != 0) {
892 /* NB: IFQ_HANDOFF reclaims mbuf */
893 ieee80211_free_node(ni);
894 } else {
895 ifp->if_opackets++;
896 }
897 }
898
899 static struct mbuf *
900 mesh_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 &&
929 !(llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) {
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 */
987 static __inline int
988 mesh_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
1008 static int
1009 mesh_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)) {
1237 if_printf(ifp, "received %s from %6D rssi %d\n",
1238 ieee80211_mgt_subtype_name[subtype >>
1239 IEEE80211_FC0_SUBTYPE_SHIFT],
1240 wh->i_addr2, ":", rssi);
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 }
1261 err:
1262 ifp->if_ierrors++;
1263 out:
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
1272 static void
1273 mesh_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;
1393 uint8_t *sfrm;
1394
1395 if (vap->iv_state != IEEE80211_S_RUN) {
1396 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1397 wh, NULL, "wrong state %s",
1398 ieee80211_state_name[vap->iv_state]);
1399 vap->iv_stats.is_rx_mgtdiscard++;
1400 return;
1401 }
1402 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) {
1403 /* frame must be directed */
1404 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1405 wh, NULL, "%s", "not unicast");
1406 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */
1407 return;
1408 }
1409 /*
1410 * prreq frame format
1411 * [tlv] ssid
1412 * [tlv] supported rates
1413 * [tlv] extended supported rates
1414 * [tlv] mesh id
1415 */
1416 ssid = meshid = rates = xrates = NULL;
1417 sfrm = frm;
1418 while (efrm - frm > 1) {
1419 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1420 switch (*frm) {
1421 case IEEE80211_ELEMID_SSID:
1422 ssid = frm;
1423 break;
1424 case IEEE80211_ELEMID_RATES:
1425 rates = frm;
1426 break;
1427 case IEEE80211_ELEMID_XRATES:
1428 xrates = frm;
1429 break;
1430 case IEEE80211_ELEMID_MESHID:
1431 meshid = frm;
1432 break;
1433 }
1434 frm += frm[2] + 2;
1435 }
1436 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return);
1437 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return);
1438 if (xrates != NULL)
1439 IEEE80211_VERIFY_ELEMENT(xrates,
1440 IEEE80211_RATE_MAXSIZE - rates[1], return);
1441 if (meshid != NULL) {
1442 IEEE80211_VERIFY_ELEMENT(meshid,
1443 IEEE80211_MESHID_LEN, return);
1444 /* NB: meshid, not ssid */
1445 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return);
1446 }
1447
1448 /* XXX find a better class or define it's own */
1449 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2,
1450 "%s", "recv probe req");
1451 /*
1452 * Some legacy 11b clients cannot hack a complete
1453 * probe response frame. When the request includes
1454 * only a bare-bones rate set, communicate this to
1455 * the transmit side.
1456 */
1457 ieee80211_send_proberesp(vap, wh->i_addr2, 0);
1458 break;
1459 }
1460 case IEEE80211_FC0_SUBTYPE_ACTION:
1461 if (vap->iv_state != IEEE80211_S_RUN) {
1462 vap->iv_stats.is_rx_mgtdiscard++;
1463 break;
1464 }
1465 /*
1466 * We received an action for an unknown neighbor.
1467 * XXX: wait for it to beacon or create ieee80211_node?
1468 */
1469 if (ni == vap->iv_bss) {
1470 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH,
1471 wh, NULL, "%s", "unknown node");
1472 vap->iv_stats.is_rx_mgtdiscard++;
1473 break;
1474 }
1475 /*
1476 * Discard if not for us.
1477 */
1478 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) &&
1479 !IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1480 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH,
1481 wh, NULL, "%s", "not for me");
1482 vap->iv_stats.is_rx_mgtdiscard++;
1483 break;
1484 }
1485 /* XXX parse_action is a bit useless now */
1486 if (ieee80211_parse_action(ni, m0) == 0)
1487 ic->ic_recv_action(ni, wh, frm, efrm);
1488 break;
1489 case IEEE80211_FC0_SUBTYPE_AUTH:
1490 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
1491 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ:
1492 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
1493 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
1494 case IEEE80211_FC0_SUBTYPE_DEAUTH:
1495 case IEEE80211_FC0_SUBTYPE_DISASSOC:
1496 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1497 wh, NULL, "%s", "not handled");
1498 vap->iv_stats.is_rx_mgtdiscard++;
1499 return;
1500 default:
1501 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
1502 wh, "mgt", "subtype 0x%x not handled", subtype);
1503 vap->iv_stats.is_rx_badsubtype++;
1504 break;
1505 }
1506 }
1507
1508 /*
1509 * Parse meshpeering action ie's for open+confirm frames; the
1510 * important bits are returned in the supplied structure.
1511 */
1512 static const struct ieee80211_meshpeer_ie *
1513 mesh_parse_meshpeering_action(struct ieee80211_node *ni,
1514 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */
1515 const uint8_t *frm, const uint8_t *efrm,
1516 struct ieee80211_meshpeer_ie *mp, uint8_t subtype)
1517 {
1518 struct ieee80211vap *vap = ni->ni_vap;
1519 const struct ieee80211_meshpeer_ie *mpie;
1520 const uint8_t *meshid, *meshconf, *meshpeer;
1521
1522 meshid = meshconf = meshpeer = NULL;
1523 while (efrm - frm > 1) {
1524 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL);
1525 switch (*frm) {
1526 case IEEE80211_ELEMID_MESHID:
1527 meshid = frm;
1528 break;
1529 case IEEE80211_ELEMID_MESHCONF:
1530 meshconf = frm;
1531 break;
1532 case IEEE80211_ELEMID_MESHPEER:
1533 meshpeer = frm;
1534 mpie = (const struct ieee80211_meshpeer_ie *) frm;
1535 memset(mp, 0, sizeof(*mp));
1536 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid);
1537 /* NB: peer link ID is optional on these frames */
1538 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE &&
1539 mpie->peer_len == 8) {
1540 mp->peer_linkid = 0;
1541 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid);
1542 } else {
1543 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid);
1544 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode);
1545 }
1546 break;
1547 }
1548 frm += frm[1] + 2;
1549 }
1550
1551 /*
1552 * Verify the contents of the frame. Action frames with
1553 * close subtype don't have a Mesh Configuration IE.
1554 * If if fails validation, close the peer link.
1555 */
1556 KASSERT(meshpeer != NULL &&
1557 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE,
1558 ("parsing close action"));
1559
1560 if (mesh_verify_meshid(vap, meshid) ||
1561 mesh_verify_meshpeer(vap, subtype, meshpeer) ||
1562 mesh_verify_meshconf(vap, meshconf)) {
1563 uint16_t args[3];
1564
1565 IEEE80211_DISCARD(vap,
1566 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
1567 wh, NULL, "%s", "not for our mesh");
1568 vap->iv_stats.is_rx_mgtdiscard++;
1569 switch (ni->ni_mlstate) {
1570 case IEEE80211_NODE_MESH_IDLE:
1571 case IEEE80211_NODE_MESH_ESTABLISHED:
1572 case IEEE80211_NODE_MESH_HOLDING:
1573 /* ignore */
1574 break;
1575 case IEEE80211_NODE_MESH_OPENSNT:
1576 case IEEE80211_NODE_MESH_OPENRCV:
1577 case IEEE80211_NODE_MESH_CONFIRMRCV:
1578 args[0] = ni->ni_mlpid;
1579 args[1] = ni->ni_mllid;
1580 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1581 ieee80211_send_action(ni,
1582 IEEE80211_ACTION_CAT_MESHPEERING,
1583 IEEE80211_ACTION_MESHPEERING_CLOSE,
1584 args);
1585 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1586 mesh_peer_timeout_setup(ni);
1587 break;
1588 }
1589 return NULL;
1590 }
1591 return (const struct ieee80211_meshpeer_ie *) mp;
1592 }
1593
1594 static int
1595 mesh_recv_action_meshpeering_open(struct ieee80211_node *ni,
1596 const struct ieee80211_frame *wh,
1597 const uint8_t *frm, const uint8_t *efrm)
1598 {
1599 struct ieee80211vap *vap = ni->ni_vap;
1600 struct ieee80211_meshpeer_ie ie;
1601 const struct ieee80211_meshpeer_ie *meshpeer;
1602 uint16_t args[3];
1603
1604 /* +2+2 for action + code + capabilites */
1605 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie,
1606 IEEE80211_ACTION_MESHPEERING_OPEN);
1607 if (meshpeer == NULL) {
1608 return 0;
1609 }
1610
1611 /* XXX move up */
1612 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1613 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid);
1614
1615 switch (ni->ni_mlstate) {
1616 case IEEE80211_NODE_MESH_IDLE:
1617 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV);
1618 ni->ni_mllid = meshpeer->peer_llinkid;
1619 ni->ni_mlpid = mesh_generateid(vap);
1620 if (ni->ni_mlpid == 0)
1621 return 0; /* XXX */
1622 args[0] = ni->ni_mlpid;
1623 /* Announce we're open too... */
1624 ieee80211_send_action(ni,
1625 IEEE80211_ACTION_CAT_MESHPEERING,
1626 IEEE80211_ACTION_MESHPEERING_OPEN, args);
1627 /* ...and confirm the link. */
1628 args[0] = ni->ni_mlpid;
1629 args[1] = ni->ni_mllid;
1630 ieee80211_send_action(ni,
1631 IEEE80211_ACTION_CAT_MESHPEERING,
1632 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1633 args);
1634 mesh_peer_timeout_setup(ni);
1635 break;
1636 case IEEE80211_NODE_MESH_OPENRCV:
1637 /* Wrong Link ID */
1638 if (ni->ni_mllid != meshpeer->peer_llinkid) {
1639 args[0] = ni->ni_mllid;
1640 args[1] = ni->ni_mlpid;
1641 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1642 ieee80211_send_action(ni,
1643 IEEE80211_ACTION_CAT_MESHPEERING,
1644 IEEE80211_ACTION_MESHPEERING_CLOSE,
1645 args);
1646 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1647 mesh_peer_timeout_setup(ni);
1648 break;
1649 }
1650 /* Duplicate open, confirm again. */
1651 args[0] = ni->ni_mlpid;
1652 args[1] = ni->ni_mllid;
1653 ieee80211_send_action(ni,
1654 IEEE80211_ACTION_CAT_MESHPEERING,
1655 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1656 args);
1657 break;
1658 case IEEE80211_NODE_MESH_OPENSNT:
1659 ni->ni_mllid = meshpeer->peer_llinkid;
1660 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV);
1661 args[0] = ni->ni_mlpid;
1662 args[1] = ni->ni_mllid;
1663 ieee80211_send_action(ni,
1664 IEEE80211_ACTION_CAT_MESHPEERING,
1665 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1666 args);
1667 /* NB: don't setup/clear any timeout */
1668 break;
1669 case IEEE80211_NODE_MESH_CONFIRMRCV:
1670 if (ni->ni_mlpid != meshpeer->peer_linkid ||
1671 ni->ni_mllid != meshpeer->peer_llinkid) {
1672 args[0] = ni->ni_mlpid;
1673 args[1] = ni->ni_mllid;
1674 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1675 ieee80211_send_action(ni,
1676 IEEE80211_ACTION_CAT_MESHPEERING,
1677 IEEE80211_ACTION_MESHPEERING_CLOSE,
1678 args);
1679 mesh_linkchange(ni,
1680 IEEE80211_NODE_MESH_HOLDING);
1681 mesh_peer_timeout_setup(ni);
1682 break;
1683 }
1684 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED);
1685 ni->ni_mllid = meshpeer->peer_llinkid;
1686 args[0] = ni->ni_mlpid;
1687 args[1] = ni->ni_mllid;
1688 ieee80211_send_action(ni,
1689 IEEE80211_ACTION_CAT_MESHPEERING,
1690 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1691 args);
1692 mesh_peer_timeout_stop(ni);
1693 break;
1694 case IEEE80211_NODE_MESH_ESTABLISHED:
1695 if (ni->ni_mllid != meshpeer->peer_llinkid) {
1696 args[0] = ni->ni_mllid;
1697 args[1] = ni->ni_mlpid;
1698 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1699 ieee80211_send_action(ni,
1700 IEEE80211_ACTION_CAT_MESHPEERING,
1701 IEEE80211_ACTION_MESHPEERING_CLOSE,
1702 args);
1703 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1704 mesh_peer_timeout_setup(ni);
1705 break;
1706 }
1707 args[0] = ni->ni_mlpid;
1708 args[1] = ni->ni_mllid;
1709 ieee80211_send_action(ni,
1710 IEEE80211_ACTION_CAT_MESHPEERING,
1711 IEEE80211_ACTION_MESHPEERING_CONFIRM,
1712 args);
1713 break;
1714 case IEEE80211_NODE_MESH_HOLDING:
1715 args[0] = ni->ni_mlpid;
1716 args[1] = meshpeer->peer_llinkid;
1717 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
1718 ieee80211_send_action(ni,
1719 IEEE80211_ACTION_CAT_MESHPEERING,
1720 IEEE80211_ACTION_MESHPEERING_CLOSE,
1721 args);
1722 break;
1723 }
1724 return 0;
1725 }
1726
1727 static int
1728 mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni,
1729 const struct ieee80211_frame *wh,
1730 const uint8_t *frm, const uint8_t *efrm)
1731 {
1732 struct ieee80211vap *vap = ni->ni_vap;
1733 struct ieee80211_meshpeer_ie ie;
1734 const struct ieee80211_meshpeer_ie *meshpeer;
1735 uint16_t args[3];
1736
1737 /* +2+2+2+2 for action + code + capabilites + status code + AID */
1738 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie,
1739 IEEE80211_ACTION_MESHPEERING_CONFIRM);
1740 if (meshpeer == NULL) {
1741 return 0;
1742 }
1743
1744 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1745 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x",
1746 meshpeer->peer_llinkid, meshpeer->peer_linkid);
1747
1748 switch (ni->ni_mlstate) {
1749 case IEEE80211_NODE_MESH_OPENRCV:
1750 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED);
1751 mesh_peer_timeout_stop(ni);
1752 break;
1753 case IEEE80211_NODE_MESH_OPENSNT:
1754 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV);
1755 break;
1756 case IEEE80211_NODE_MESH_HOLDING:
1757 args[0] = ni->ni_mlpid;
1758 args[1] = meshpeer->peer_llinkid;
1759 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
1760 ieee80211_send_action(ni,
1761 IEEE80211_ACTION_CAT_MESHPEERING,
1762 IEEE80211_ACTION_MESHPEERING_CLOSE,
1763 args);
1764 break;
1765 case IEEE80211_NODE_MESH_CONFIRMRCV:
1766 if (ni->ni_mllid != meshpeer->peer_llinkid) {
1767 args[0] = ni->ni_mlpid;
1768 args[1] = ni->ni_mllid;
1769 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
1770 ieee80211_send_action(ni,
1771 IEEE80211_ACTION_CAT_MESHPEERING,
1772 IEEE80211_ACTION_MESHPEERING_CLOSE,
1773 args);
1774 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1775 mesh_peer_timeout_setup(ni);
1776 }
1777 break;
1778 default:
1779 IEEE80211_DISCARD(vap,
1780 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
1781 wh, NULL, "received confirm in invalid state %d",
1782 ni->ni_mlstate);
1783 vap->iv_stats.is_rx_mgtdiscard++;
1784 break;
1785 }
1786 return 0;
1787 }
1788
1789 static int
1790 mesh_recv_action_meshpeering_close(struct ieee80211_node *ni,
1791 const struct ieee80211_frame *wh,
1792 const uint8_t *frm, const uint8_t *efrm)
1793 {
1794 uint16_t args[3];
1795
1796 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
1797 ni, "%s", "recv PEER CLOSE");
1798
1799 switch (ni->ni_mlstate) {
1800 case IEEE80211_NODE_MESH_IDLE:
1801 /* ignore */
1802 break;
1803 case IEEE80211_NODE_MESH_OPENRCV:
1804 case IEEE80211_NODE_MESH_OPENSNT:
1805 case IEEE80211_NODE_MESH_CONFIRMRCV:
1806 case IEEE80211_NODE_MESH_ESTABLISHED:
1807 args[0] = ni->ni_mlpid;
1808 args[1] = ni->ni_mllid;
1809 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD;
1810 ieee80211_send_action(ni,
1811 IEEE80211_ACTION_CAT_MESHPEERING,
1812 IEEE80211_ACTION_MESHPEERING_CLOSE,
1813 args);
1814 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
1815 mesh_peer_timeout_setup(ni);
1816 break;
1817 case IEEE80211_NODE_MESH_HOLDING:
1818 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE);
1819 mesh_peer_timeout_setup(ni);
1820 break;
1821 }
1822 return 0;
1823 }
1824
1825 /*
1826 * Link Metric handling.
1827 */
1828 static int
1829 mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni,
1830 const struct ieee80211_frame *wh,
1831 const uint8_t *frm, const uint8_t *efrm)
1832 {
1833 uint32_t metric;
1834
1835 metric = mesh_airtime_calc(ni);
1836 ieee80211_send_action(ni,
1837 IEEE80211_ACTION_CAT_MESHLMETRIC,
1838 IEEE80211_ACTION_MESHLMETRIC_REP,
1839 &metric);
1840 return 0;
1841 }
1842
1843 static int
1844 mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni,
1845 const struct ieee80211_frame *wh,
1846 const uint8_t *frm, const uint8_t *efrm)
1847 {
1848 return 0;
1849 }
1850
1851 static int
1852 mesh_send_action(struct ieee80211_node *ni, struct mbuf *m)
1853 {
1854 struct ieee80211_bpf_params params;
1855
1856 memset(&params, 0, sizeof(params));
1857 params.ibp_pri = WME_AC_VO;
1858 params.ibp_rate0 = ni->ni_txparms->mgmtrate;
1859 /* XXX ucast/mcast */
1860 params.ibp_try0 = ni->ni_txparms->maxretry;
1861 params.ibp_power = ni->ni_txpower;
1862 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION,
1863 &params);
1864 }
1865
1866 #define ADDSHORT(frm, v) do { \
1867 frm[0] = (v) & 0xff; \
1868 frm[1] = (v) >> 8; \
1869 frm += 2; \
1870 } while (0)
1871 #define ADDWORD(frm, v) do { \
1872 frm[0] = (v) & 0xff; \
1873 frm[1] = ((v) >> 8) & 0xff; \
1874 frm[2] = ((v) >> 16) & 0xff; \
1875 frm[3] = ((v) >> 24) & 0xff; \
1876 frm += 4; \
1877 } while (0)
1878
1879 static int
1880 mesh_send_action_meshpeering_open(struct ieee80211_node *ni,
1881 int category, int action, void *args0)
1882 {
1883 struct ieee80211vap *vap = ni->ni_vap;
1884 struct ieee80211com *ic = ni->ni_ic;
1885 uint16_t *args = args0;
1886 const struct ieee80211_rateset *rs;
1887 struct mbuf *m;
1888 uint8_t *frm;
1889
1890 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1891 "send PEER OPEN action: localid 0x%x", args[0]);
1892
1893 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1894 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__,
1895 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1);
1896 ieee80211_ref_node(ni);
1897
1898 m = ieee80211_getmgtframe(&frm,
1899 ic->ic_headroom + sizeof(struct ieee80211_frame),
1900 sizeof(uint16_t) /* action+category */
1901 + sizeof(uint16_t) /* capabilites */
1902 + 2 + IEEE80211_RATE_SIZE
1903 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE)
1904 + 2 + IEEE80211_MESHID_LEN
1905 + sizeof(struct ieee80211_meshconf_ie)
1906 + sizeof(struct ieee80211_meshpeer_ie)
1907 );
1908 if (m != NULL) {
1909 /*
1910 * mesh peer open action frame format:
1911 * [1] category
1912 * [1] action
1913 * [2] capabilities
1914 * [tlv] rates
1915 * [tlv] xrates
1916 * [tlv] mesh id
1917 * [tlv] mesh conf
1918 * [tlv] mesh peer link mgmt
1919 */
1920 *frm++ = category;
1921 *frm++ = action;
1922 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan));
1923 rs = ieee80211_get_suprates(ic, ic->ic_curchan);
1924 frm = ieee80211_add_rates(frm, rs);
1925 frm = ieee80211_add_xrates(frm, rs);
1926 frm = ieee80211_add_meshid(frm, vap);
1927 frm = ieee80211_add_meshconf(frm, vap);
1928 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN,
1929 args[0], 0, 0);
1930 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
1931 return mesh_send_action(ni, m);
1932 } else {
1933 vap->iv_stats.is_tx_nobuf++;
1934 ieee80211_free_node(ni);
1935 return ENOMEM;
1936 }
1937 }
1938
1939 static int
1940 mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni,
1941 int category, int action, void *args0)
1942 {
1943 struct ieee80211vap *vap = ni->ni_vap;
1944 struct ieee80211com *ic = ni->ni_ic;
1945 uint16_t *args = args0;
1946 const struct ieee80211_rateset *rs;
1947 struct mbuf *m;
1948 uint8_t *frm;
1949
1950 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
1951 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x",
1952 args[0], args[1]);
1953
1954 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1955 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__,
1956 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1);
1957 ieee80211_ref_node(ni);
1958
1959 m = ieee80211_getmgtframe(&frm,
1960 ic->ic_headroom + sizeof(struct ieee80211_frame),
1961 sizeof(uint16_t) /* action+category */
1962 + sizeof(uint16_t) /* capabilites */
1963 + sizeof(uint16_t) /* status code */
1964 + sizeof(uint16_t) /* AID */
1965 + 2 + IEEE80211_RATE_SIZE
1966 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE)
1967 + 2 + IEEE80211_MESHID_LEN
1968 + sizeof(struct ieee80211_meshconf_ie)
1969 + sizeof(struct ieee80211_meshpeer_ie)
1970 );
1971 if (m != NULL) {
1972 /*
1973 * mesh peer confirm action frame format:
1974 * [1] category
1975 * [1] action
1976 * [2] capabilities
1977 * [2] status code
1978 * [2] association id (peer ID)
1979 * [tlv] rates
1980 * [tlv] xrates
1981 * [tlv] mesh id
1982 * [tlv] mesh conf
1983 * [tlv] mesh peer link mgmt
1984 */
1985 *frm++ = category;
1986 *frm++ = action;
1987 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan));
1988 ADDSHORT(frm, 0); /* status code */
1989 ADDSHORT(frm, args[1]); /* AID */
1990 rs = ieee80211_get_suprates(ic, ic->ic_curchan);
1991 frm = ieee80211_add_rates(frm, rs);
1992 frm = ieee80211_add_xrates(frm, rs);
1993 frm = ieee80211_add_meshid(frm, vap);
1994 frm = ieee80211_add_meshconf(frm, vap);
1995 frm = ieee80211_add_meshpeer(frm,
1996 IEEE80211_MESH_PEER_LINK_CONFIRM,
1997 args[0], args[1], 0);
1998 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
1999 return mesh_send_action(ni, m);
2000 } else {
2001 vap->iv_stats.is_tx_nobuf++;
2002 ieee80211_free_node(ni);
2003 return ENOMEM;
2004 }
2005 }
2006
2007 static int
2008 mesh_send_action_meshpeering_close(struct ieee80211_node *ni,
2009 int category, int action, void *args0)
2010 {
2011 struct ieee80211vap *vap = ni->ni_vap;
2012 struct ieee80211com *ic = ni->ni_ic;
2013 uint16_t *args = args0;
2014 struct mbuf *m;
2015 uint8_t *frm;
2016
2017 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
2018 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d",
2019 args[0], args[1], args[2]);
2020
2021 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
2022 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__,
2023 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1);
2024 ieee80211_ref_node(ni);
2025
2026 m = ieee80211_getmgtframe(&frm,
2027 ic->ic_headroom + sizeof(struct ieee80211_frame),
2028 sizeof(uint16_t) /* action+category */
2029 + sizeof(uint16_t) /* reason code */
2030 + 2 + IEEE80211_MESHID_LEN
2031 + sizeof(struct ieee80211_meshpeer_ie)
2032 );
2033 if (m != NULL) {
2034 /*
2035 * mesh peer close action frame format:
2036 * [1] category
2037 * [1] action
2038 * [2] reason code
2039 * [tlv] mesh id
2040 * [tlv] mesh peer link mgmt
2041 */
2042 *frm++ = category;
2043 *frm++ = action;
2044 ADDSHORT(frm, args[2]); /* reason code */
2045 frm = ieee80211_add_meshid(frm, vap);
2046 frm = ieee80211_add_meshpeer(frm,
2047 IEEE80211_MESH_PEER_LINK_CLOSE,
2048 args[0], args[1], args[2]);
2049 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
2050 return mesh_send_action(ni, m);
2051 } else {
2052 vap->iv_stats.is_tx_nobuf++;
2053 ieee80211_free_node(ni);
2054 return ENOMEM;
2055 }
2056 }
2057
2058 static int
2059 mesh_send_action_meshlink_request(struct ieee80211_node *ni,
2060 int category, int action, void *arg0)
2061 {
2062 struct ieee80211vap *vap = ni->ni_vap;
2063 struct ieee80211com *ic = ni->ni_ic;
2064 struct mbuf *m;
2065 uint8_t *frm;
2066
2067 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
2068 "%s", "send LINK METRIC REQUEST action");
2069
2070 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
2071 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__,
2072 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1);
2073 ieee80211_ref_node(ni);
2074
2075 m = ieee80211_getmgtframe(&frm,
2076 ic->ic_headroom + sizeof(struct ieee80211_frame),
2077 sizeof(uint16_t) /* action+category */
2078 );
2079 if (m != NULL) {
2080 /*
2081 * mesh link metric request
2082 * [1] category
2083 * [1] action
2084 */
2085 *frm++ = category;
2086 *frm++ = action;
2087 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
2088 return mesh_send_action(ni, m);
2089 } else {
2090 vap->iv_stats.is_tx_nobuf++;
2091 ieee80211_free_node(ni);
2092 return ENOMEM;
2093 }
2094 }
2095
2096 static int
2097 mesh_send_action_meshlink_reply(struct ieee80211_node *ni,
2098 int category, int action, void *args0)
2099 {
2100 struct ieee80211vap *vap = ni->ni_vap;
2101 struct ieee80211com *ic = ni->ni_ic;
2102 uint32_t *metric = args0;
2103 struct mbuf *m;
2104 uint8_t *frm;
2105
2106 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
2107 "send LINK METRIC REPLY action: metric 0x%x", *metric);
2108
2109 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
2110 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__,
2111 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1);
2112 ieee80211_ref_node(ni);
2113
2114 m = ieee80211_getmgtframe(&frm,
2115 ic->ic_headroom + sizeof(struct ieee80211_frame),
2116 sizeof(uint16_t) /* action+category */
2117 + sizeof(struct ieee80211_meshlmetric_ie)
2118 );
2119 if (m != NULL) {
2120 /*
2121 * mesh link metric reply
2122 * [1] category
2123 * [1] action
2124 * [tlv] mesh link metric
2125 */
2126 *frm++ = category;
2127 *frm++ = action;
2128 frm = ieee80211_add_meshlmetric(frm, *metric);
2129 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
2130 return mesh_send_action(ni, m);
2131 } else {
2132 vap->iv_stats.is_tx_nobuf++;
2133 ieee80211_free_node(ni);
2134 return ENOMEM;
2135 }
2136 }
2137
2138 static void
2139 mesh_peer_timeout_setup(struct ieee80211_node *ni)
2140 {
2141 switch (ni->ni_mlstate) {
2142 case IEEE80211_NODE_MESH_HOLDING:
2143 ni->ni_mltval = ieee80211_mesh_holdingtimeout;
2144 break;
2145 case IEEE80211_NODE_MESH_CONFIRMRCV:
2146 ni->ni_mltval = ieee80211_mesh_confirmtimeout;
2147 break;
2148 case IEEE80211_NODE_MESH_IDLE:
2149 ni->ni_mltval = 0;
2150 break;
2151 default:
2152 ni->ni_mltval = ieee80211_mesh_retrytimeout;
2153 break;
2154 }
2155 if (ni->ni_mltval) {
2156 callout_reset(&ni->ni_mltimer, ni->ni_mltval,
2157 mesh_peer_timeout_callout, ni);
2158 }
2159 }
2160
2161 /*
2162 * Same as above but backoffs timer statisically 50%.
2163 */
2164 static void
2165 mesh_peer_timeout_backoff(struct ieee80211_node *ni)
2166 {
2167 uint32_t r;
2168
2169 r = karc4random();
2170 ni->ni_mltval += r % ni->ni_mltval;
2171 callout_reset(&ni->ni_mltimer, ni->ni_mltval,
2172 mesh_peer_timeout_callout, ni);
2173 }
2174
2175 static __inline void
2176 mesh_peer_timeout_stop(struct ieee80211_node *ni)
2177 {
2178 callout_stop(&ni->ni_mltimer);
2179 }
2180
2181 /*
2182 * Mesh Peer Link Management FSM timeout handling.
2183 */
2184 static void
2185 mesh_peer_timeout_callout(void *arg)
2186 {
2187 struct ieee80211_node *ni = (struct ieee80211_node *)arg;
2188 uint16_t args[3];
2189
2190 wlan_serialize_enter();
2191 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH,
2192 ni, "mesh link timeout, state %d, retry counter %d",
2193 ni->ni_mlstate, ni->ni_mlrcnt);
2194
2195 switch (ni->ni_mlstate) {
2196 case IEEE80211_NODE_MESH_IDLE:
2197 case IEEE80211_NODE_MESH_ESTABLISHED:
2198 break;
2199 case IEEE80211_NODE_MESH_OPENSNT:
2200 case IEEE80211_NODE_MESH_OPENRCV:
2201 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) {
2202 args[0] = ni->ni_mlpid;
2203 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
2204 ieee80211_send_action(ni,
2205 IEEE80211_ACTION_CAT_MESHPEERING,
2206 IEEE80211_ACTION_MESHPEERING_CLOSE, args);
2207 ni->ni_mlrcnt = 0;
2208 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
2209 mesh_peer_timeout_setup(ni);
2210 } else {
2211 args[0] = ni->ni_mlpid;
2212 ieee80211_send_action(ni,
2213 IEEE80211_ACTION_CAT_MESHPEERING,
2214 IEEE80211_ACTION_MESHPEERING_OPEN, args);
2215 ni->ni_mlrcnt++;
2216 mesh_peer_timeout_backoff(ni);
2217 }
2218 break;
2219 case IEEE80211_NODE_MESH_CONFIRMRCV:
2220 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) {
2221 args[0] = ni->ni_mlpid;
2222 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT;
2223 ieee80211_send_action(ni,
2224 IEEE80211_ACTION_CAT_MESHPEERING,
2225 IEEE80211_ACTION_MESHPEERING_CLOSE, args);
2226 ni->ni_mlrcnt = 0;
2227 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
2228 mesh_peer_timeout_setup(ni);
2229 } else {
2230 ni->ni_mlrcnt++;
2231 mesh_peer_timeout_setup(ni);
2232 }
2233 break;
2234 case IEEE80211_NODE_MESH_HOLDING:
2235 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE);
2236 break;
2237 }
2238 wlan_serialize_exit();
2239 }
2240
2241 static int
2242 mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie)
2243 {
2244 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2245
2246 if (ie == NULL || ie[1] != ms->ms_idlen)
2247 return 1;
2248 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen);
2249 }
2250
2251 /*
2252 * Check if we are using the same algorithms for this mesh.
2253 */
2254 static int
2255 mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie)
2256 {
2257 const struct ieee80211_meshconf_ie *meshconf =
2258 (const struct ieee80211_meshconf_ie *) ie;
2259 const struct ieee80211_mesh_state *ms = vap->iv_mesh;
2260 uint16_t cap;
2261
2262 if (meshconf == NULL)
2263 return 1;
2264 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) {
2265 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2266 "unknown path selection algorithm: 0x%x\n",
2267 meshconf->conf_pselid);
2268 return 1;
2269 }
2270 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) {
2271 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2272 "unknown path metric algorithm: 0x%x\n",
2273 meshconf->conf_pmetid);
2274 return 1;
2275 }
2276 if (meshconf->conf_ccid != 0) {
2277 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2278 "unknown congestion control algorithm: 0x%x\n",
2279 meshconf->conf_ccid);
2280 return 1;
2281 }
2282 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) {
2283 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2284 "unknown sync algorithm: 0x%x\n",
2285 meshconf->conf_syncid);
2286 return 1;
2287 }
2288 if (meshconf->conf_authid != 0) {
2289 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2290 "unknown auth auth algorithm: 0x%x\n",
2291 meshconf->conf_pselid);
2292 return 1;
2293 }
2294 /* NB: conf_cap is only read correctly here */
2295 cap = LE_READ_2(&meshconf->conf_cap);
2296 /* Not accepting peers */
2297 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) {
2298 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
2299 "not accepting peers: 0x%x\n", meshconf->conf_cap);
2300 return 1;
2301 }
2302 return 0;
2303 }
2304
2305 static int
2306 mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype,
2307 const uint8_t *ie)
2308 {
2309 const struct ieee80211_meshpeer_ie *meshpeer =
2310 (const struct ieee80211_meshpeer_ie *) ie;
2311
2312 if (meshpeer == NULL || meshpeer->peer_len < 6 ||
2313 meshpeer->peer_len > 10)
2314 return 1;
2315 switch (subtype) {
2316 case IEEE80211_MESH_PEER_LINK_OPEN:
2317 if (meshpeer->peer_len != 6)
2318 return 1;
2319 break;
2320 case IEEE80211_MESH_PEER_LINK_CONFIRM:
2321 if (meshpeer->peer_len != 8)
2322 return 1;
2323 break;
2324 case IEEE80211_MESH_PEER_LINK_CLOSE:
2325 if (meshpeer->peer_len < 8)
2326 return 1;
2327 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0)
2328 return 1;
2329 if (meshpeer->peer_rcode == 0)
2330 return 1;
2331 break;
2332 }
2333 return 0;
2334 }
2335
2336 /*
2337 * Add a Mesh ID IE to a frame.
2338 */
2339 uint8_t *
2340 ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap)
2341 {
2342 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2343
2344 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap"));
2345
2346 *frm++ = IEEE80211_ELEMID_MESHID;
2347 *frm++ = ms->ms_idlen;
2348 memcpy(frm, ms->ms_id, ms->ms_idlen);
2349 return frm + ms->ms_idlen;
2350 }
2351
2352 /*
2353 * Add a Mesh Configuration IE to a frame.
2354 * For now just use HWMP routing, Airtime link metric, Null Congestion
2355 * Signaling, Null Sync Protocol and Null Authentication.
2356 */
2357 uint8_t *
2358 ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap)
2359 {
2360 const struct ieee80211_mesh_state *ms = vap->iv_mesh;
2361 uint16_t caps;
2362
2363 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap"));
2364
2365 *frm++ = IEEE80211_ELEMID_MESHCONF;
2366 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2;
2367 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */
2368 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */
2369 *frm++ = IEEE80211_MESHCONF_CC_DISABLED;
2370 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF;
2371 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED;
2372 /* NB: set the number of neighbors before the rest */
2373 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1;
2374 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL)
2375 *frm |= IEEE80211_MESHCONF_FORM_MP;
2376 frm += 1;
2377 caps = 0;
2378 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP)
2379 caps |= IEEE80211_MESHCONF_CAP_AP;
2380 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD)
2381 caps |= IEEE80211_MESHCONF_CAP_FWRD;
2382 ADDSHORT(frm, caps);
2383 return frm;
2384 }
2385
2386 /*
2387 * Add a Mesh Peer Management IE to a frame.
2388 */
2389 uint8_t *
2390 ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid,
2391 uint16_t peerid, uint16_t reason)
2392 {
2393 /* XXX change for AH */
2394 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO;
2395
2396 KASSERT(localid != 0, ("localid == 0"));
2397
2398 *frm++ = IEEE80211_ELEMID_MESHPEER;
2399 switch (subtype) {
2400 case IEEE80211_MESH_PEER_LINK_OPEN:
2401 *frm++ = 6; /* length */
2402 memcpy(frm, meshpeerproto, 4);
2403 frm += 4;
2404 ADDSHORT(frm, localid); /* local ID */
2405 break;
2406 case IEEE80211_MESH_PEER_LINK_CONFIRM:
2407 KASSERT(peerid != 0, ("sending peer confirm without peer id"));
2408 *frm++ = 8; /* length */
2409 memcpy(frm, meshpeerproto, 4);
2410 frm += 4;
2411 ADDSHORT(frm, localid); /* local ID */
2412 ADDSHORT(frm, peerid); /* peer ID */
2413 break;
2414 case IEEE80211_MESH_PEER_LINK_CLOSE:
2415 if (peerid)
2416 *frm++ = 10; /* length */
2417 else
2418 *frm++ = 8; /* length */
2419 memcpy(frm, meshpeerproto, 4);
2420 frm += 4;
2421 ADDSHORT(frm, localid); /* local ID */
2422 if (peerid)
2423 ADDSHORT(frm, peerid); /* peer ID */
2424 ADDSHORT(frm, reason);
2425 break;
2426 }
2427 return frm;
2428 }
2429
2430 /*
2431 * Compute an Airtime Link Metric for the link with this node.
2432 *
2433 * Based on Draft 3.0 spec (11B.10, p.149).
2434 */
2435 /*
2436 * Max 802.11s overhead.
2437 */
2438 #define IEEE80211_MESH_MAXOVERHEAD \
2439 (sizeof(struct ieee80211_qosframe_addr4) \
2440 + sizeof(struct ieee80211_meshcntl_ae11) \
2441 + sizeof(struct llc) \
2442 + IEEE80211_ADDR_LEN \
2443 + IEEE80211_WEP_IVLEN \
2444 + IEEE80211_WEP_KIDLEN \
2445 + IEEE80211_WEP_CRCLEN \
2446 + IEEE80211_WEP_MICLEN \
2447 + IEEE80211_CRC_LEN)
2448 uint32_t
2449 mesh_airtime_calc(struct ieee80211_node *ni)
2450 {
2451 #define M_BITS 8
2452 #define S_FACTOR (2 * M_BITS)
2453 struct ieee80211com *ic = ni->ni_ic;
2454 struct ifnet *ifp = ni->ni_vap->iv_ifp;
2455 static const int nbits = 8192 << M_BITS;
2456 uint32_t overhead, rate, errrate;
2457 uint64_t res;
2458
2459 /* Time to transmit a frame */
2460 rate = ni->ni_txrate;
2461 overhead = ieee80211_compute_duration(ic->ic_rt,
2462 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS;
2463 /* Error rate in percentage */
2464 /* XXX assuming small failures are ok */
2465 errrate = (((ifp->if_oerrors +
2466 ifp->if_ierrors) / 100) << M_BITS) / 100;
2467 res = (overhead + (nbits / rate)) *
2468 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate));
2469
2470 return (uint32_t)(res >> S_FACTOR);
2471 #undef M_BITS
2472 #undef S_FACTOR
2473 }
2474
2475 /*
2476 * Add a Mesh Link Metric report IE to a frame.
2477 */
2478 uint8_t *
2479 ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric)
2480 {
2481 *frm++ = IEEE80211_ELEMID_MESHLINK;
2482 *frm++ = 4;
2483 ADDWORD(frm, metric);
2484 return frm;
2485 }
2486 #undef ADDSHORT
2487 #undef ADDWORD
2488
2489 /*
2490 * Initialize any mesh-specific node state.
2491 */
2492 void
2493 ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni)
2494 {
2495 ni->ni_flags |= IEEE80211_NODE_QOS;
2496 callout_init_mp(&ni->ni_mltimer);
2497 }
2498
2499 /*
2500 * Cleanup any mesh-specific node state.
2501 */
2502 void
2503 ieee80211_mesh_node_cleanup(struct ieee80211_node *ni)
2504 {
2505 struct ieee80211vap *vap = ni->ni_vap;
2506 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2507
2508 callout_stop(&ni->ni_mltimer);
2509 /* NB: short-circuit callbacks after mesh_vdetach */
2510 if (vap->iv_mesh != NULL)
2511 ms->ms_ppath->mpp_peerdown(ni);
2512 }
2513
2514 void
2515 ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie)
2516 {
2517 ni->ni_meshidlen = ie[1];
2518 memcpy(ni->ni_meshid, ie + 2, ie[1]);
2519 }
2520
2521 /*
2522 * Setup mesh-specific node state on neighbor discovery.
2523 */
2524 void
2525 ieee80211_mesh_init_neighbor(struct ieee80211_node *ni,
2526 const struct ieee80211_frame *wh,
2527 const struct ieee80211_scanparams *sp)
2528 {
2529 ieee80211_parse_meshid(ni, sp->meshid);
2530 }
2531
2532 void
2533 ieee80211_mesh_update_beacon(struct ieee80211vap *vap,
2534 struct ieee80211_beacon_offsets *bo)
2535 {
2536 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap"));
2537
2538 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) {
2539 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap);
2540 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF);
2541 }
2542 }
2543
2544 static int
2545 mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
2546 {
2547 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2548 uint8_t tmpmeshid[IEEE80211_NWID_LEN];
2549 struct ieee80211_mesh_route *rt;
2550 struct ieee80211req_mesh_route *imr;
2551 size_t len, off;
2552 uint8_t *p;
2553 int error;
2554
2555 if (vap->iv_opmode != IEEE80211_M_MBSS)
2556 return ENOSYS;
2557
2558 error = 0;
2559 switch (ireq->i_type) {
2560 case IEEE80211_IOC_MESH_ID:
2561 ireq->i_len = ms->ms_idlen;
2562 memcpy(tmpmeshid, ms->ms_id, ireq->i_len);
2563 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len);
2564 break;
2565 case IEEE80211_IOC_MESH_AP:
2566 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0;
2567 break;
2568 case IEEE80211_IOC_MESH_FWRD:
2569 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0;
2570 break;
2571 case IEEE80211_IOC_MESH_TTL:
2572 ireq->i_val = ms->ms_ttl;
2573 break;
2574 case IEEE80211_IOC_MESH_RTCMD:
2575 switch (ireq->i_val) {
2576 case IEEE80211_MESH_RTCMD_LIST:
2577 len = 0;
2578 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
2579 len += sizeof(*imr);
2580 }
2581 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) {
2582 ireq->i_len = len;
2583 return ENOMEM;
2584 }
2585 ireq->i_len = len;
2586 /* XXX M_WAIT? */
2587 p = kmalloc(len, M_TEMP, M_INTWAIT | M_ZERO);
2588 if (p == NULL)
2589 return ENOMEM;
2590 off = 0;
2591 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
2592 if (off >= len)
2593 break;
2594 imr = (struct ieee80211req_mesh_route *)
2595 (p + off);
2596 imr->imr_flags = rt->rt_flags;
2597 IEEE80211_ADDR_COPY(imr->imr_dest,
2598 rt->rt_dest);
2599 IEEE80211_ADDR_COPY(imr->imr_nexthop,
2600 rt->rt_nexthop);
2601 imr->imr_metric = rt->rt_metric;
2602 imr->imr_nhops = rt->rt_nhops;
2603 imr->imr_lifetime = rt->rt_lifetime;
2604 imr->imr_lastmseq = rt->rt_lastmseq;
2605 off += sizeof(*imr);
2606 }
2607 error = copyout(p, (uint8_t *)ireq->i_data,
2608 ireq->i_len);
2609 kfree(p, M_TEMP);
2610 break;
2611 case IEEE80211_MESH_RTCMD_FLUSH:
2612 case IEEE80211_MESH_RTCMD_ADD:
2613 case IEEE80211_MESH_RTCMD_DELETE:
2614 return EINVAL;
2615 default:
2616 return ENOSYS;
2617 }
2618 break;
2619 case IEEE80211_IOC_MESH_PR_METRIC:
2620 len = strlen(ms->ms_pmetric->mpm_descr);
2621 if (ireq->i_len < len)
2622 return EINVAL;
2623 ireq->i_len = len;
2624 error = copyout(ms->ms_pmetric->mpm_descr,
2625 (uint8_t *)ireq->i_data, len);
2626 break;
2627 case IEEE80211_IOC_MESH_PR_PATH:
2628 len = strlen(ms->ms_ppath->mpp_descr);
2629 if (ireq->i_len < len)
2630 return EINVAL;
2631 ireq->i_len = len;
2632 error = copyout(ms->ms_ppath->mpp_descr,
2633 (uint8_t *)ireq->i_data, len);
2634 break;
2635 default:
2636 return ENOSYS;
2637 }
2638
2639 return error;
2640 }
2641 IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211);
2642
2643 static int
2644 mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
2645 {
2646 struct ieee80211_mesh_state *ms = vap->iv_mesh;
2647 uint8_t tmpmeshid[IEEE80211_NWID_LEN];
2648 uint8_t tmpaddr[IEEE80211_ADDR_LEN];
2649 char tmpproto[IEEE80211_MESH_PROTO_DSZ];
2650 int error;
2651
2652 if (vap->iv_opmode != IEEE80211_M_MBSS)
2653 return ENOSYS;
2654
2655 error = 0;
2656 switch (ireq->i_type) {
2657 case IEEE80211_IOC_MESH_ID:
2658 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN)
2659 return EINVAL;
2660 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len);
2661 if (error != 0)
2662 break;
2663 memset(ms->ms_id, 0, IEEE80211_NWID_LEN);
2664 ms->ms_idlen = ireq->i_len;
2665 memcpy(ms->ms_id, tmpmeshid, ireq->i_len);
2666 error = ENETRESET;
2667 break;
2668 case IEEE80211_IOC_MESH_AP:
2669 if (ireq->i_val)
2670 ms->ms_flags |= IEEE80211_MESHFLAGS_AP;
2671 else
2672 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP;
2673 error = ENETRESET;
2674 break;
2675 case IEEE80211_IOC_MESH_FWRD:
2676 if (ireq->i_val)
2677 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD;
2678 else
2679 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD;
2680 break;
2681 case IEEE80211_IOC_MESH_TTL:
2682 ms->ms_ttl = (uint8_t) ireq->i_val;
2683 break;
2684 case IEEE80211_IOC_MESH_RTCMD:
2685 switch (ireq->i_val) {
2686 case IEEE80211_MESH_RTCMD_LIST:
2687 return EINVAL;
2688 case IEEE80211_MESH_RTCMD_FLUSH:
2689 ieee80211_mesh_rt_flush(vap);
2690 break;
2691 case IEEE80211_MESH_RTCMD_ADD:
2692 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) ||
2693 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data))
2694 return EINVAL;
2695 error = copyin(ireq->i_data, &tmpaddr,
2696 IEEE80211_ADDR_LEN);
2697 if (error == 0)
2698 ieee80211_mesh_discover(vap, tmpaddr, NULL);
2699 break;
2700 case IEEE80211_MESH_RTCMD_DELETE:
2701 ieee80211_mesh_rt_del(vap, ireq->i_data);
2702 break;
2703 default:
2704 return ENOSYS;
2705 }
2706 break;
2707 case IEEE80211_IOC_MESH_PR_METRIC:
2708 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto));
2709 if (error == 0) {
2710 error = mesh_select_proto_metric(vap, tmpproto);
2711 if (error == 0)
2712 error = ENETRESET;
2713 }
2714 break;
2715 case IEEE80211_IOC_MESH_PR_PATH:
2716 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto));
2717 if (error == 0) {
2718 error = mesh_select_proto_path(vap, tmpproto);
2719 if (error == 0)
2720 error = ENETRESET;
2721 }
2722 break;
2723 default:
2724 return ENOSYS;
2725 }
2726 return error;
2727 }
2728 IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211);
DragonFly BSD