ieee80211_mesh.c revision 232479
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: head/sys/net80211/ieee80211_mesh.c 232479 2012-03-04 05:49:39Z adrian $"); 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 65static void mesh_rt_flush_invalid(struct ieee80211vap *); 66static int mesh_select_proto_path(struct ieee80211vap *, const char *); 67static int mesh_select_proto_metric(struct ieee80211vap *, const char *); 68static void mesh_vattach(struct ieee80211vap *); 69static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); 70static void mesh_rt_cleanup_cb(void *); 71static void mesh_linkchange(struct ieee80211_node *, 72 enum ieee80211_mesh_mlstate); 73static void mesh_checkid(void *, struct ieee80211_node *); 74static uint32_t mesh_generateid(struct ieee80211vap *); 75static int mesh_checkpseq(struct ieee80211vap *, 76 const uint8_t [IEEE80211_ADDR_LEN], uint32_t); 77static struct ieee80211_node * 78 mesh_find_txnode(struct ieee80211vap *, 79 const uint8_t [IEEE80211_ADDR_LEN]); 80static void mesh_forward(struct ieee80211vap *, struct mbuf *, 81 const struct ieee80211_meshcntl *); 82static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int); 83static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 84 int, int); 85static void mesh_recv_ctl(struct ieee80211_node *, struct mbuf *, int); 86static void mesh_peer_timeout_setup(struct ieee80211_node *); 87static void mesh_peer_timeout_backoff(struct ieee80211_node *); 88static void mesh_peer_timeout_cb(void *); 89static __inline void 90 mesh_peer_timeout_stop(struct ieee80211_node *); 91static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 92static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 93static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 94 const uint8_t *); 95uint32_t mesh_airtime_calc(struct ieee80211_node *); 96 97/* 98 * Timeout values come from the specification and are in milliseconds. 99 */ 100static SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 101 "IEEE 802.11s parameters"); 102static int ieee80211_mesh_retrytimeout = -1; 103SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 104 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 105 "Retry timeout (msec)"); 106static int ieee80211_mesh_holdingtimeout = -1; 107SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 108 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 109 "Holding state timeout (msec)"); 110static int ieee80211_mesh_confirmtimeout = -1; 111SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 112 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 113 "Confirm state timeout (msec)"); 114static int ieee80211_mesh_maxretries = 2; 115SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 116 &ieee80211_mesh_maxretries, 0, 117 "Maximum retries during peer link establishment"); 118 119static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 120 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 121 122static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 123static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 124static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 125static ieee80211_recv_action_func mesh_recv_action_meshlmetric; 126 127static ieee80211_send_action_func mesh_send_action_meshpeering_open; 128static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 129static ieee80211_send_action_func mesh_send_action_meshpeering_close; 130static ieee80211_send_action_func mesh_send_action_meshlmetric; 131 132static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 133 .mpm_descr = "AIRTIME", 134 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 135 .mpm_metric = mesh_airtime_calc, 136}; 137 138static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 139static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 140 141#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) 142#define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 143#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 144 145MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 146 147/* 148 * Helper functions to manipulate the Mesh routing table. 149 */ 150 151static struct ieee80211_mesh_route * 152mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 153 const uint8_t dest[IEEE80211_ADDR_LEN]) 154{ 155 struct ieee80211_mesh_route *rt; 156 157 MESH_RT_LOCK_ASSERT(ms); 158 159 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 160 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 161 return rt; 162 } 163 return NULL; 164} 165 166static struct ieee80211_mesh_route * 167mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 168 const uint8_t dest[IEEE80211_ADDR_LEN]) 169{ 170 struct ieee80211_mesh_route *rt; 171 172 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 173 ("%s: adding broadcast to the routing table", __func__)); 174 175 MESH_RT_LOCK_ASSERT(ms); 176 177 rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 178 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 179 if (rt != NULL) { 180 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 181 rt->rt_priv = (void *)ALIGN(&rt[1]); 182 rt->rt_crtime = ticks; 183 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 184 } 185 return rt; 186} 187 188struct ieee80211_mesh_route * 189ieee80211_mesh_rt_find(struct ieee80211vap *vap, 190 const uint8_t dest[IEEE80211_ADDR_LEN]) 191{ 192 struct ieee80211_mesh_state *ms = vap->iv_mesh; 193 struct ieee80211_mesh_route *rt; 194 195 MESH_RT_LOCK(ms); 196 rt = mesh_rt_find_locked(ms, dest); 197 MESH_RT_UNLOCK(ms); 198 return rt; 199} 200 201struct ieee80211_mesh_route * 202ieee80211_mesh_rt_add(struct ieee80211vap *vap, 203 const uint8_t dest[IEEE80211_ADDR_LEN]) 204{ 205 struct ieee80211_mesh_state *ms = vap->iv_mesh; 206 struct ieee80211_mesh_route *rt; 207 208 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 209 ("%s: duplicate entry in the routing table", __func__)); 210 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 211 ("%s: adding self to the routing table", __func__)); 212 213 MESH_RT_LOCK(ms); 214 rt = mesh_rt_add_locked(ms, dest); 215 MESH_RT_UNLOCK(ms); 216 return rt; 217} 218 219/* 220 * Add a proxy route (as needed) for the specified destination. 221 */ 222void 223ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 224 const uint8_t dest[IEEE80211_ADDR_LEN]) 225{ 226 struct ieee80211_mesh_state *ms = vap->iv_mesh; 227 struct ieee80211_mesh_route *rt; 228 229 MESH_RT_LOCK(ms); 230 rt = mesh_rt_find_locked(ms, dest); 231 if (rt == NULL) { 232 rt = mesh_rt_add_locked(ms, dest); 233 if (rt == NULL) { 234 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 235 "%s", "unable to add proxy entry"); 236 vap->iv_stats.is_mesh_rtaddfailed++; 237 } else { 238 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 239 "%s", "add proxy entry"); 240 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 241 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 242 | IEEE80211_MESHRT_FLAGS_PROXY; 243 } 244 /* XXX assert PROXY? */ 245 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 246 struct ieee80211com *ic = vap->iv_ic; 247 /* 248 * Fix existing entry created by received frames from 249 * stations that have some memory of dest. We also 250 * flush any frames held on the staging queue; delivering 251 * them is too much trouble right now. 252 */ 253 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 254 "%s", "fix proxy entry"); 255 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 256 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 257 | IEEE80211_MESHRT_FLAGS_PROXY; 258 /* XXX belongs in hwmp */ 259 ieee80211_ageq_drain_node(&ic->ic_stageq, 260 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 261 /* XXX stat? */ 262 } 263 MESH_RT_UNLOCK(ms); 264} 265 266static __inline void 267mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 268{ 269 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 270 free(rt, M_80211_MESH_RT); 271} 272 273void 274ieee80211_mesh_rt_del(struct ieee80211vap *vap, 275 const uint8_t dest[IEEE80211_ADDR_LEN]) 276{ 277 struct ieee80211_mesh_state *ms = vap->iv_mesh; 278 struct ieee80211_mesh_route *rt, *next; 279 280 MESH_RT_LOCK(ms); 281 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 282 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 283 mesh_rt_del(ms, rt); 284 MESH_RT_UNLOCK(ms); 285 return; 286 } 287 } 288 MESH_RT_UNLOCK(ms); 289} 290 291void 292ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 293{ 294 struct ieee80211_mesh_state *ms = vap->iv_mesh; 295 struct ieee80211_mesh_route *rt, *next; 296 297 if (ms == NULL) 298 return; 299 MESH_RT_LOCK(ms); 300 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 301 mesh_rt_del(ms, rt); 302 MESH_RT_UNLOCK(ms); 303} 304 305void 306ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 307 const uint8_t peer[IEEE80211_ADDR_LEN]) 308{ 309 struct ieee80211_mesh_state *ms = vap->iv_mesh; 310 struct ieee80211_mesh_route *rt, *next; 311 312 MESH_RT_LOCK(ms); 313 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 314 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 315 mesh_rt_del(ms, rt); 316 } 317 MESH_RT_UNLOCK(ms); 318} 319 320/* 321 * Flush expired routing entries, i.e. those in invalid state for 322 * some time. 323 */ 324static void 325mesh_rt_flush_invalid(struct ieee80211vap *vap) 326{ 327 struct ieee80211_mesh_state *ms = vap->iv_mesh; 328 struct ieee80211_mesh_route *rt, *next; 329 330 if (ms == NULL) 331 return; 332 MESH_RT_LOCK(ms); 333 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 334 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 335 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 336 mesh_rt_del(ms, rt); 337 } 338 MESH_RT_UNLOCK(ms); 339} 340 341#define N(a) (sizeof(a) / sizeof(a[0])) 342int 343ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 344{ 345 int i, firstempty = -1; 346 347 for (i = 0; i < N(mesh_proto_paths); i++) { 348 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 349 IEEE80211_MESH_PROTO_DSZ) == 0) 350 return EEXIST; 351 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 352 firstempty = i; 353 } 354 if (firstempty < 0) 355 return ENOSPC; 356 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 357 mesh_proto_paths[firstempty].mpp_active = 1; 358 return 0; 359} 360 361int 362ieee80211_mesh_register_proto_metric(const struct 363 ieee80211_mesh_proto_metric *mpm) 364{ 365 int i, firstempty = -1; 366 367 for (i = 0; i < N(mesh_proto_metrics); i++) { 368 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 369 IEEE80211_MESH_PROTO_DSZ) == 0) 370 return EEXIST; 371 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 372 firstempty = i; 373 } 374 if (firstempty < 0) 375 return ENOSPC; 376 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 377 mesh_proto_metrics[firstempty].mpm_active = 1; 378 return 0; 379} 380 381static int 382mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 383{ 384 struct ieee80211_mesh_state *ms = vap->iv_mesh; 385 int i; 386 387 for (i = 0; i < N(mesh_proto_paths); i++) { 388 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 389 ms->ms_ppath = &mesh_proto_paths[i]; 390 return 0; 391 } 392 } 393 return ENOENT; 394} 395 396static int 397mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 398{ 399 struct ieee80211_mesh_state *ms = vap->iv_mesh; 400 int i; 401 402 for (i = 0; i < N(mesh_proto_metrics); i++) { 403 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 404 ms->ms_pmetric = &mesh_proto_metrics[i]; 405 return 0; 406 } 407 } 408 return ENOENT; 409} 410#undef N 411 412static void 413ieee80211_mesh_init(void) 414{ 415 416 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 417 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 418 419 /* 420 * Setup mesh parameters that depends on the clock frequency. 421 */ 422 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 423 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 424 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 425 426 /* 427 * Register action frame handlers. 428 */ 429 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 430 IEEE80211_ACTION_MESHPEERING_OPEN, 431 mesh_recv_action_meshpeering_open); 432 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 433 IEEE80211_ACTION_MESHPEERING_CONFIRM, 434 mesh_recv_action_meshpeering_confirm); 435 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 436 IEEE80211_ACTION_MESHPEERING_CLOSE, 437 mesh_recv_action_meshpeering_close); 438 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESH, 439 IEEE80211_ACTION_MESH_LMETRIC, mesh_recv_action_meshlmetric); 440 441 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 442 IEEE80211_ACTION_MESHPEERING_OPEN, 443 mesh_send_action_meshpeering_open); 444 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 445 IEEE80211_ACTION_MESHPEERING_CONFIRM, 446 mesh_send_action_meshpeering_confirm); 447 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 448 IEEE80211_ACTION_MESHPEERING_CLOSE, 449 mesh_send_action_meshpeering_close); 450 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESH, 451 IEEE80211_ACTION_MESH_LMETRIC, 452 mesh_send_action_meshlmetric); 453 454 /* 455 * Register Airtime Link Metric. 456 */ 457 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 458 459} 460SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 461 462void 463ieee80211_mesh_attach(struct ieee80211com *ic) 464{ 465 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 466} 467 468void 469ieee80211_mesh_detach(struct ieee80211com *ic) 470{ 471} 472 473static void 474mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 475{ 476 struct ieee80211com *ic = ni->ni_ic; 477 uint16_t args[3]; 478 479 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 480 args[0] = ni->ni_mlpid; 481 args[1] = ni->ni_mllid; 482 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 483 ieee80211_send_action(ni, 484 IEEE80211_ACTION_CAT_MESHPEERING, 485 IEEE80211_ACTION_MESHPEERING_CLOSE, 486 args); 487 } 488 callout_drain(&ni->ni_mltimer); 489 /* XXX belongs in hwmp */ 490 ieee80211_ageq_drain_node(&ic->ic_stageq, 491 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 492} 493 494static void 495mesh_vdetach(struct ieee80211vap *vap) 496{ 497 struct ieee80211_mesh_state *ms = vap->iv_mesh; 498 499 callout_drain(&ms->ms_cleantimer); 500 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 501 NULL); 502 ieee80211_mesh_rt_flush(vap); 503 mtx_destroy(&ms->ms_rt_lock); 504 ms->ms_ppath->mpp_vdetach(vap); 505 free(vap->iv_mesh, M_80211_VAP); 506 vap->iv_mesh = NULL; 507} 508 509static void 510mesh_vattach(struct ieee80211vap *vap) 511{ 512 struct ieee80211_mesh_state *ms; 513 vap->iv_newstate = mesh_newstate; 514 vap->iv_input = mesh_input; 515 vap->iv_opdetach = mesh_vdetach; 516 vap->iv_recv_mgmt = mesh_recv_mgmt; 517 vap->iv_recv_ctl = mesh_recv_ctl; 518 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 519 M_NOWAIT | M_ZERO); 520 if (ms == NULL) { 521 printf("%s: couldn't alloc MBSS state\n", __func__); 522 return; 523 } 524 vap->iv_mesh = ms; 525 ms->ms_seq = 0; 526 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 527 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 528 TAILQ_INIT(&ms->ms_routes); 529 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 530 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 531 mesh_select_proto_metric(vap, "AIRTIME"); 532 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 533 mesh_select_proto_path(vap, "HWMP"); 534 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 535 ms->ms_ppath->mpp_vattach(vap); 536} 537 538/* 539 * IEEE80211_M_MBSS vap state machine handler. 540 */ 541static int 542mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 543{ 544 struct ieee80211_mesh_state *ms = vap->iv_mesh; 545 struct ieee80211com *ic = vap->iv_ic; 546 struct ieee80211_node *ni; 547 enum ieee80211_state ostate; 548 549 IEEE80211_LOCK_ASSERT(ic); 550 551 ostate = vap->iv_state; 552 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 553 __func__, ieee80211_state_name[ostate], 554 ieee80211_state_name[nstate], arg); 555 vap->iv_state = nstate; /* state transition */ 556 if (ostate != IEEE80211_S_SCAN) 557 ieee80211_cancel_scan(vap); /* background scan */ 558 ni = vap->iv_bss; /* NB: no reference held */ 559 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 560 callout_drain(&ms->ms_cleantimer); 561 switch (nstate) { 562 case IEEE80211_S_INIT: 563 switch (ostate) { 564 case IEEE80211_S_SCAN: 565 ieee80211_cancel_scan(vap); 566 break; 567 case IEEE80211_S_CAC: 568 ieee80211_dfs_cac_stop(vap); 569 break; 570 case IEEE80211_S_RUN: 571 ieee80211_iterate_nodes(&ic->ic_sta, 572 mesh_vdetach_peers, NULL); 573 break; 574 default: 575 break; 576 } 577 if (ostate != IEEE80211_S_INIT) { 578 /* NB: optimize INIT -> INIT case */ 579 ieee80211_reset_bss(vap); 580 ieee80211_mesh_rt_flush(vap); 581 } 582 break; 583 case IEEE80211_S_SCAN: 584 switch (ostate) { 585 case IEEE80211_S_INIT: 586 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 587 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 588 ms->ms_idlen != 0) { 589 /* 590 * Already have a channel and a mesh ID; bypass 591 * the scan and startup immediately. 592 */ 593 ieee80211_create_ibss(vap, vap->iv_des_chan); 594 break; 595 } 596 /* 597 * Initiate a scan. We can come here as a result 598 * of an IEEE80211_IOC_SCAN_REQ too in which case 599 * the vap will be marked with IEEE80211_FEXT_SCANREQ 600 * and the scan request parameters will be present 601 * in iv_scanreq. Otherwise we do the default. 602 */ 603 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 604 ieee80211_check_scan(vap, 605 vap->iv_scanreq_flags, 606 vap->iv_scanreq_duration, 607 vap->iv_scanreq_mindwell, 608 vap->iv_scanreq_maxdwell, 609 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 610 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 611 } else 612 ieee80211_check_scan_current(vap); 613 break; 614 default: 615 break; 616 } 617 break; 618 case IEEE80211_S_CAC: 619 /* 620 * Start CAC on a DFS channel. We come here when starting 621 * a bss on a DFS channel (see ieee80211_create_ibss). 622 */ 623 ieee80211_dfs_cac_start(vap); 624 break; 625 case IEEE80211_S_RUN: 626 switch (ostate) { 627 case IEEE80211_S_INIT: 628 /* 629 * Already have a channel; bypass the 630 * scan and startup immediately. 631 * Note that ieee80211_create_ibss will call 632 * back to do a RUN->RUN state change. 633 */ 634 ieee80211_create_ibss(vap, 635 ieee80211_ht_adjust_channel(ic, 636 ic->ic_curchan, vap->iv_flags_ht)); 637 /* NB: iv_bss is changed on return */ 638 break; 639 case IEEE80211_S_CAC: 640 /* 641 * NB: This is the normal state change when CAC 642 * expires and no radar was detected; no need to 643 * clear the CAC timer as it's already expired. 644 */ 645 /* fall thru... */ 646 case IEEE80211_S_CSA: 647#if 0 648 /* 649 * Shorten inactivity timer of associated stations 650 * to weed out sta's that don't follow a CSA. 651 */ 652 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 653#endif 654 /* 655 * Update bss node channel to reflect where 656 * we landed after CSA. 657 */ 658 ieee80211_node_set_chan(vap->iv_bss, 659 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 660 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 661 /* XXX bypass debug msgs */ 662 break; 663 case IEEE80211_S_SCAN: 664 case IEEE80211_S_RUN: 665#ifdef IEEE80211_DEBUG 666 if (ieee80211_msg_debug(vap)) { 667 struct ieee80211_node *ni = vap->iv_bss; 668 ieee80211_note(vap, 669 "synchronized with %s meshid ", 670 ether_sprintf(ni->ni_meshid)); 671 ieee80211_print_essid(ni->ni_meshid, 672 ni->ni_meshidlen); 673 /* XXX MCS/HT */ 674 printf(" channel %d\n", 675 ieee80211_chan2ieee(ic, ic->ic_curchan)); 676 } 677#endif 678 break; 679 default: 680 break; 681 } 682 ieee80211_node_authorize(vap->iv_bss); 683 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 684 mesh_rt_cleanup_cb, vap); 685 break; 686 default: 687 break; 688 } 689 /* NB: ostate not nstate */ 690 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 691 return 0; 692} 693 694static void 695mesh_rt_cleanup_cb(void *arg) 696{ 697 struct ieee80211vap *vap = arg; 698 struct ieee80211_mesh_state *ms = vap->iv_mesh; 699 700 mesh_rt_flush_invalid(vap); 701 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 702 mesh_rt_cleanup_cb, vap); 703} 704 705 706/* 707 * Helper function to note the Mesh Peer Link FSM change. 708 */ 709static void 710mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 711{ 712 struct ieee80211vap *vap = ni->ni_vap; 713 struct ieee80211_mesh_state *ms = vap->iv_mesh; 714#ifdef IEEE80211_DEBUG 715 static const char *meshlinkstates[] = { 716 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 717 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 718 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 719 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 720 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 721 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 722 }; 723#endif 724 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 725 ni, "peer link: %s -> %s", 726 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 727 728 /* track neighbor count */ 729 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 730 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 731 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 732 ms->ms_neighbors++; 733 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 734 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 735 state != IEEE80211_NODE_MESH_ESTABLISHED) { 736 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 737 ms->ms_neighbors--; 738 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 739 } 740 ni->ni_mlstate = state; 741 switch (state) { 742 case IEEE80211_NODE_MESH_HOLDING: 743 ms->ms_ppath->mpp_peerdown(ni); 744 break; 745 case IEEE80211_NODE_MESH_ESTABLISHED: 746 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 747 break; 748 default: 749 break; 750 } 751} 752 753/* 754 * Helper function to generate a unique local ID required for mesh 755 * peer establishment. 756 */ 757static void 758mesh_checkid(void *arg, struct ieee80211_node *ni) 759{ 760 uint16_t *r = arg; 761 762 if (*r == ni->ni_mllid) 763 *(uint16_t *)arg = 0; 764} 765 766static uint32_t 767mesh_generateid(struct ieee80211vap *vap) 768{ 769 int maxiter = 4; 770 uint16_t r; 771 772 do { 773 get_random_bytes(&r, 2); 774 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 775 maxiter--; 776 } while (r == 0 && maxiter > 0); 777 return r; 778} 779 780/* 781 * Verifies if we already received this packet by checking its 782 * sequence number. 783 * Returns 0 if the frame is to be accepted, 1 otherwise. 784 */ 785static int 786mesh_checkpseq(struct ieee80211vap *vap, 787 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 788{ 789 struct ieee80211_mesh_route *rt; 790 791 rt = ieee80211_mesh_rt_find(vap, source); 792 if (rt == NULL) { 793 rt = ieee80211_mesh_rt_add(vap, source); 794 if (rt == NULL) { 795 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 796 "%s", "add mcast route failed"); 797 vap->iv_stats.is_mesh_rtaddfailed++; 798 return 1; 799 } 800 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 801 "add mcast route, mesh seqno %d", seq); 802 rt->rt_lastmseq = seq; 803 return 0; 804 } 805 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 806 return 1; 807 } else { 808 rt->rt_lastmseq = seq; 809 return 0; 810 } 811} 812 813/* 814 * Iterate the routing table and locate the next hop. 815 */ 816static struct ieee80211_node * 817mesh_find_txnode(struct ieee80211vap *vap, 818 const uint8_t dest[IEEE80211_ADDR_LEN]) 819{ 820 struct ieee80211_mesh_route *rt; 821 822 rt = ieee80211_mesh_rt_find(vap, dest); 823 if (rt == NULL) 824 return NULL; 825 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 826 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 827 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 828 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 829 /* XXX stat */ 830 return NULL; 831 } 832 return ieee80211_find_txnode(vap, rt->rt_nexthop); 833} 834 835/* 836 * Forward the specified frame. 837 * Decrement the TTL and set TA to our MAC address. 838 */ 839static void 840mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 841 const struct ieee80211_meshcntl *mc) 842{ 843 struct ieee80211com *ic = vap->iv_ic; 844 struct ieee80211_mesh_state *ms = vap->iv_mesh; 845 struct ifnet *ifp = vap->iv_ifp; 846 struct ifnet *parent = ic->ic_ifp; 847 const struct ieee80211_frame *wh = 848 mtod(m, const struct ieee80211_frame *); 849 struct mbuf *mcopy; 850 struct ieee80211_meshcntl *mccopy; 851 struct ieee80211_frame *whcopy; 852 struct ieee80211_node *ni; 853 int err; 854 855 if (mc->mc_ttl == 0) { 856 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 857 "%s", "frame not fwd'd, ttl 0"); 858 vap->iv_stats.is_mesh_fwd_ttl++; 859 return; 860 } 861 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 862 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 863 "%s", "frame not fwd'd, fwding disabled"); 864 vap->iv_stats.is_mesh_fwd_disabled++; 865 return; 866 } 867 mcopy = m_dup(m, M_DONTWAIT); 868 if (mcopy == NULL) { 869 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 870 "%s", "frame not fwd'd, cannot dup"); 871 vap->iv_stats.is_mesh_fwd_nobuf++; 872 ifp->if_oerrors++; 873 return; 874 } 875 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 876 sizeof(struct ieee80211_meshcntl)); 877 if (mcopy == NULL) { 878 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 879 "%s", "frame not fwd'd, too short"); 880 vap->iv_stats.is_mesh_fwd_tooshort++; 881 ifp->if_oerrors++; 882 m_freem(mcopy); 883 return; 884 } 885 whcopy = mtod(mcopy, struct ieee80211_frame *); 886 mccopy = (struct ieee80211_meshcntl *) 887 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 888 /* XXX clear other bits? */ 889 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 890 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 891 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 892 ni = ieee80211_ref_node(vap->iv_bss); 893 mcopy->m_flags |= M_MCAST; 894 } else { 895 ni = mesh_find_txnode(vap, whcopy->i_addr3); 896 if (ni == NULL) { 897 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 898 "%s", "frame not fwd'd, no path"); 899 vap->iv_stats.is_mesh_fwd_nopath++; 900 m_freem(mcopy); 901 return; 902 } 903 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 904 } 905 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 906 mccopy->mc_ttl--; 907 908 /* XXX calculate priority so drivers can find the tx queue */ 909 M_WME_SETAC(mcopy, WME_AC_BE); 910 911 /* XXX do we know m_nextpkt is NULL? */ 912 mcopy->m_pkthdr.rcvif = (void *) ni; 913 err = parent->if_transmit(parent, mcopy); 914 if (err != 0) { 915 /* NB: IFQ_HANDOFF reclaims mbuf */ 916 ieee80211_free_node(ni); 917 } else { 918 ifp->if_opackets++; 919 } 920} 921 922static struct mbuf * 923mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 924{ 925#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 926 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 927 sizeof(struct ieee80211_meshcntl_ae11)]; 928 const struct ieee80211_qosframe_addr4 *wh; 929 const struct ieee80211_meshcntl_ae10 *mc; 930 struct ether_header *eh; 931 struct llc *llc; 932 int ae; 933 934 if (m->m_len < hdrlen + sizeof(*llc) && 935 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 936 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 937 "discard data frame: %s", "m_pullup failed"); 938 vap->iv_stats.is_rx_tooshort++; 939 return NULL; 940 } 941 memcpy(b, mtod(m, caddr_t), hdrlen); 942 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 943 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 944 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 945 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 946 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 947 948 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 949 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 950 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 951 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 952 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 953 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 954 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 955 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 956 llc = NULL; 957 } else { 958 m_adj(m, hdrlen - sizeof(*eh)); 959 } 960 eh = mtod(m, struct ether_header *); 961 ae = mc->mc_flags & 3; 962 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 963 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 964 if (ae == 0) { 965 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 966 } else if (ae == 1) { 967 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 968 } else { 969 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 970 (const struct ieee80211_frame *)wh, NULL, 971 "bad AE %d", ae); 972 vap->iv_stats.is_mesh_badae++; 973 m_freem(m); 974 return NULL; 975 } 976 } else { 977 if (ae == 0) { 978 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 979 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 980 } else if (ae == 2) { 981 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 982 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 983 } else { 984 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 985 (const struct ieee80211_frame *)wh, NULL, 986 "bad AE %d", ae); 987 vap->iv_stats.is_mesh_badae++; 988 m_freem(m); 989 return NULL; 990 } 991 } 992#ifdef ALIGNED_POINTER 993 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 994 m = ieee80211_realign(vap, m, sizeof(*eh)); 995 if (m == NULL) 996 return NULL; 997 } 998#endif /* ALIGNED_POINTER */ 999 if (llc != NULL) { 1000 eh = mtod(m, struct ether_header *); 1001 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 1002 } 1003 return m; 1004#undef WDIR 1005} 1006 1007/* 1008 * Return non-zero if the unicast mesh data frame should be processed 1009 * locally. Frames that are not proxy'd have our address, otherwise 1010 * we need to consult the routing table to look for a proxy entry. 1011 */ 1012static __inline int 1013mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 1014 const struct ieee80211_meshcntl *mc) 1015{ 1016 int ae = mc->mc_flags & 3; 1017 1018 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1019 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1020 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1021 if (ae == 2) { /* ucast w/ proxy */ 1022 const struct ieee80211_meshcntl_ae10 *mc10 = 1023 (const struct ieee80211_meshcntl_ae10 *) mc; 1024 struct ieee80211_mesh_route *rt = 1025 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1026 /* check for proxy route to ourself */ 1027 return (rt != NULL && 1028 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1029 } else /* ucast w/o proxy */ 1030 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1031} 1032 1033static int 1034mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1035{ 1036#define HAS_SEQ(type) ((type & 0x4) == 0) 1037 struct ieee80211vap *vap = ni->ni_vap; 1038 struct ieee80211com *ic = ni->ni_ic; 1039 struct ifnet *ifp = vap->iv_ifp; 1040 struct ieee80211_frame *wh; 1041 const struct ieee80211_meshcntl *mc; 1042 int hdrspace, meshdrlen, need_tap; 1043 uint8_t dir, type, subtype, qos; 1044 uint32_t seq; 1045 uint8_t *addr; 1046 ieee80211_seq rxseq; 1047 1048 KASSERT(ni != NULL, ("null node")); 1049 ni->ni_inact = ni->ni_inact_reload; 1050 1051 need_tap = 1; /* mbuf need to be tapped. */ 1052 type = -1; /* undefined */ 1053 1054 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1055 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1056 ni->ni_macaddr, NULL, 1057 "too short (1): len %u", m->m_pkthdr.len); 1058 vap->iv_stats.is_rx_tooshort++; 1059 goto out; 1060 } 1061 /* 1062 * Bit of a cheat here, we use a pointer for a 3-address 1063 * frame format but don't reference fields past outside 1064 * ieee80211_frame_min w/o first validating the data is 1065 * present. 1066 */ 1067 wh = mtod(m, struct ieee80211_frame *); 1068 1069 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1070 IEEE80211_FC0_VERSION_0) { 1071 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1072 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1073 vap->iv_stats.is_rx_badversion++; 1074 goto err; 1075 } 1076 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1077 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1078 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1079 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1080 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1081 ni->ni_noise = nf; 1082 if (HAS_SEQ(type)) { 1083 uint8_t tid = ieee80211_gettid(wh); 1084 1085 if (IEEE80211_QOS_HAS_SEQ(wh) && 1086 TID_TO_WME_AC(tid) >= WME_AC_VI) 1087 ic->ic_wme.wme_hipri_traffic++; 1088 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1089 if (! ieee80211_check_rxseq(ni, wh)) { 1090 /* duplicate, discard */ 1091 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1092 wh->i_addr1, "duplicate", 1093 "seqno <%u,%u> fragno <%u,%u> tid %u", 1094 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1095 ni->ni_rxseqs[tid] >> 1096 IEEE80211_SEQ_SEQ_SHIFT, 1097 rxseq & IEEE80211_SEQ_FRAG_MASK, 1098 ni->ni_rxseqs[tid] & 1099 IEEE80211_SEQ_FRAG_MASK, 1100 tid); 1101 vap->iv_stats.is_rx_dup++; 1102 IEEE80211_NODE_STAT(ni, rx_dup); 1103 goto out; 1104 } 1105 ni->ni_rxseqs[tid] = rxseq; 1106 } 1107 } 1108#ifdef IEEE80211_DEBUG 1109 /* 1110 * It's easier, but too expensive, to simulate different mesh 1111 * topologies by consulting the ACL policy very early, so do this 1112 * only under DEBUG. 1113 * 1114 * NB: this check is also done upon peering link initiation. 1115 */ 1116 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { 1117 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1118 wh, NULL, "%s", "disallowed by ACL"); 1119 vap->iv_stats.is_rx_acl++; 1120 goto out; 1121 } 1122#endif 1123 switch (type) { 1124 case IEEE80211_FC0_TYPE_DATA: 1125 if (ni == vap->iv_bss) 1126 goto out; 1127 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1128 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1129 ni->ni_macaddr, NULL, 1130 "peer link not yet established (%d)", 1131 ni->ni_mlstate); 1132 vap->iv_stats.is_mesh_nolink++; 1133 goto out; 1134 } 1135 if (dir != IEEE80211_FC1_DIR_FROMDS && 1136 dir != IEEE80211_FC1_DIR_DSTODS) { 1137 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1138 wh, "data", "incorrect dir 0x%x", dir); 1139 vap->iv_stats.is_rx_wrongdir++; 1140 goto err; 1141 } 1142 /* pull up enough to get to the mesh control */ 1143 hdrspace = ieee80211_hdrspace(ic, wh); 1144 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1145 (m = m_pullup(m, hdrspace + 1146 sizeof(struct ieee80211_meshcntl))) == NULL) { 1147 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1148 ni->ni_macaddr, NULL, 1149 "data too short: expecting %u", hdrspace); 1150 vap->iv_stats.is_rx_tooshort++; 1151 goto out; /* XXX */ 1152 } 1153 /* 1154 * Now calculate the full extent of the headers. Note 1155 * mesh_decap will pull up anything we didn't get 1156 * above when it strips the 802.11 headers. 1157 */ 1158 mc = (const struct ieee80211_meshcntl *) 1159 (mtod(m, const uint8_t *) + hdrspace); 1160 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1161 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1162 hdrspace += meshdrlen; 1163 seq = LE_READ_4(mc->mc_seq); 1164 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1165 addr = wh->i_addr3; 1166 else 1167 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1168 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1169 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1170 addr, "data", "%s", "not to me"); 1171 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1172 goto out; 1173 } 1174 if (mesh_checkpseq(vap, addr, seq) != 0) { 1175 vap->iv_stats.is_rx_dup++; 1176 goto out; 1177 } 1178 1179 /* 1180 * Potentially forward packet. See table s36 (p140) 1181 * for the rules. XXX tap fwd'd packets not for us? 1182 */ 1183 if (dir == IEEE80211_FC1_DIR_FROMDS || 1184 !mesh_isucastforme(vap, wh, mc)) { 1185 mesh_forward(vap, m, mc); 1186 if (dir == IEEE80211_FC1_DIR_DSTODS) 1187 goto out; 1188 /* NB: fall thru to deliver mcast frames locally */ 1189 } 1190 1191 /* 1192 * Save QoS bits for use below--before we strip the header. 1193 */ 1194 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1195 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1196 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1197 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1198 } else 1199 qos = 0; 1200 /* 1201 * Next up, any fragmentation. 1202 */ 1203 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1204 m = ieee80211_defrag(ni, m, hdrspace); 1205 if (m == NULL) { 1206 /* Fragment dropped or frame not complete yet */ 1207 goto out; 1208 } 1209 } 1210 wh = NULL; /* no longer valid, catch any uses */ 1211 1212 if (ieee80211_radiotap_active_vap(vap)) 1213 ieee80211_radiotap_rx(vap, m); 1214 need_tap = 0; 1215 1216 /* 1217 * Finally, strip the 802.11 header. 1218 */ 1219 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1220 if (m == NULL) { 1221 /* XXX mask bit to check for both */ 1222 /* don't count Null data frames as errors */ 1223 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1224 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1225 goto out; 1226 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1227 ni->ni_macaddr, "data", "%s", "decap error"); 1228 vap->iv_stats.is_rx_decap++; 1229 IEEE80211_NODE_STAT(ni, rx_decap); 1230 goto err; 1231 } 1232 if (qos & IEEE80211_QOS_AMSDU) { 1233 m = ieee80211_decap_amsdu(ni, m); 1234 if (m == NULL) 1235 return IEEE80211_FC0_TYPE_DATA; 1236 } 1237 ieee80211_deliver_data(vap, ni, m); 1238 return type; 1239 case IEEE80211_FC0_TYPE_MGT: 1240 vap->iv_stats.is_rx_mgmt++; 1241 IEEE80211_NODE_STAT(ni, rx_mgmt); 1242 if (dir != IEEE80211_FC1_DIR_NODS) { 1243 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1244 wh, "mgt", "incorrect dir 0x%x", dir); 1245 vap->iv_stats.is_rx_wrongdir++; 1246 goto err; 1247 } 1248 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1249 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1250 ni->ni_macaddr, "mgt", "too short: len %u", 1251 m->m_pkthdr.len); 1252 vap->iv_stats.is_rx_tooshort++; 1253 goto out; 1254 } 1255#ifdef IEEE80211_DEBUG 1256 if ((ieee80211_msg_debug(vap) && 1257 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1258 ieee80211_msg_dumppkts(vap)) { 1259 if_printf(ifp, "received %s from %s rssi %d\n", 1260 ieee80211_mgt_subtype_name[subtype >> 1261 IEEE80211_FC0_SUBTYPE_SHIFT], 1262 ether_sprintf(wh->i_addr2), rssi); 1263 } 1264#endif 1265 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1266 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1267 wh, NULL, "%s", "WEP set but not permitted"); 1268 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1269 goto out; 1270 } 1271 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1272 goto out; 1273 case IEEE80211_FC0_TYPE_CTL: 1274 vap->iv_stats.is_rx_ctl++; 1275 IEEE80211_NODE_STAT(ni, rx_ctrl); 1276 goto out; 1277 default: 1278 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1279 wh, "bad", "frame type 0x%x", type); 1280 /* should not come here */ 1281 break; 1282 } 1283err: 1284 ifp->if_ierrors++; 1285out: 1286 if (m != NULL) { 1287 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1288 ieee80211_radiotap_rx(vap, m); 1289 m_freem(m); 1290 } 1291 return type; 1292} 1293 1294static void 1295mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1296 int rssi, int nf) 1297{ 1298 struct ieee80211vap *vap = ni->ni_vap; 1299 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1300 struct ieee80211com *ic = ni->ni_ic; 1301 struct ieee80211_frame *wh; 1302 uint8_t *frm, *efrm; 1303 1304 wh = mtod(m0, struct ieee80211_frame *); 1305 frm = (uint8_t *)&wh[1]; 1306 efrm = mtod(m0, uint8_t *) + m0->m_len; 1307 switch (subtype) { 1308 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1309 case IEEE80211_FC0_SUBTYPE_BEACON: 1310 { 1311 struct ieee80211_scanparams scan; 1312 /* 1313 * We process beacon/probe response 1314 * frames to discover neighbors. 1315 */ 1316 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1317 return; 1318 /* 1319 * Count frame now that we know it's to be processed. 1320 */ 1321 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1322 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1323 IEEE80211_NODE_STAT(ni, rx_beacons); 1324 } else 1325 IEEE80211_NODE_STAT(ni, rx_proberesp); 1326 /* 1327 * If scanning, just pass information to the scan module. 1328 */ 1329 if (ic->ic_flags & IEEE80211_F_SCAN) { 1330 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1331 /* 1332 * Actively scanning a channel marked passive; 1333 * send a probe request now that we know there 1334 * is 802.11 traffic present. 1335 * 1336 * XXX check if the beacon we recv'd gives 1337 * us what we need and suppress the probe req 1338 */ 1339 ieee80211_probe_curchan(vap, 1); 1340 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1341 } 1342 ieee80211_add_scan(vap, &scan, wh, 1343 subtype, rssi, nf); 1344 return; 1345 } 1346 1347 /* The rest of this code assumes we are running */ 1348 if (vap->iv_state != IEEE80211_S_RUN) 1349 return; 1350 /* 1351 * Ignore non-mesh STAs. 1352 */ 1353 if ((scan.capinfo & 1354 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1355 scan.meshid == NULL || scan.meshconf == NULL) { 1356 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1357 wh, "beacon", "%s", "not a mesh sta"); 1358 vap->iv_stats.is_mesh_wrongmesh++; 1359 return; 1360 } 1361 /* 1362 * Ignore STAs for other mesh networks. 1363 */ 1364 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1365 mesh_verify_meshconf(vap, scan.meshconf)) { 1366 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1367 wh, "beacon", "%s", "not for our mesh"); 1368 vap->iv_stats.is_mesh_wrongmesh++; 1369 return; 1370 } 1371 /* 1372 * Peer only based on the current ACL policy. 1373 */ 1374 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { 1375 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1376 wh, NULL, "%s", "disallowed by ACL"); 1377 vap->iv_stats.is_rx_acl++; 1378 return; 1379 } 1380 /* 1381 * Do neighbor discovery. 1382 */ 1383 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1384 /* 1385 * Create a new entry in the neighbor table. 1386 */ 1387 ni = ieee80211_add_neighbor(vap, wh, &scan); 1388 } 1389 /* 1390 * Automatically peer with discovered nodes if possible. 1391 * XXX backoff on repeated failure 1392 */ 1393 if (ni != vap->iv_bss && 1394 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1395 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1396 uint16_t args[1]; 1397 1398 ni->ni_mlpid = mesh_generateid(vap); 1399 if (ni->ni_mlpid == 0) 1400 return; 1401 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1402 args[0] = ni->ni_mlpid; 1403 ieee80211_send_action(ni, 1404 IEEE80211_ACTION_CAT_MESHPEERING, 1405 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1406 ni->ni_mlrcnt = 0; 1407 mesh_peer_timeout_setup(ni); 1408 } 1409 break; 1410 } 1411 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1412 { 1413 uint8_t *ssid, *meshid, *rates, *xrates; 1414 uint8_t *sfrm; 1415 1416 if (vap->iv_state != IEEE80211_S_RUN) { 1417 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1418 wh, NULL, "wrong state %s", 1419 ieee80211_state_name[vap->iv_state]); 1420 vap->iv_stats.is_rx_mgtdiscard++; 1421 return; 1422 } 1423 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1424 /* frame must be directed */ 1425 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1426 wh, NULL, "%s", "not unicast"); 1427 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1428 return; 1429 } 1430 /* 1431 * prreq frame format 1432 * [tlv] ssid 1433 * [tlv] supported rates 1434 * [tlv] extended supported rates 1435 * [tlv] mesh id 1436 */ 1437 ssid = meshid = rates = xrates = NULL; 1438 sfrm = frm; 1439 while (efrm - frm > 1) { 1440 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1441 switch (*frm) { 1442 case IEEE80211_ELEMID_SSID: 1443 ssid = frm; 1444 break; 1445 case IEEE80211_ELEMID_RATES: 1446 rates = frm; 1447 break; 1448 case IEEE80211_ELEMID_XRATES: 1449 xrates = frm; 1450 break; 1451 case IEEE80211_ELEMID_MESHID: 1452 meshid = frm; 1453 break; 1454 } 1455 frm += frm[1] + 2; 1456 } 1457 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1458 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1459 if (xrates != NULL) 1460 IEEE80211_VERIFY_ELEMENT(xrates, 1461 IEEE80211_RATE_MAXSIZE - rates[1], return); 1462 if (meshid != NULL) { 1463 IEEE80211_VERIFY_ELEMENT(meshid, 1464 IEEE80211_MESHID_LEN, return); 1465 /* NB: meshid, not ssid */ 1466 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1467 } 1468 1469 /* XXX find a better class or define it's own */ 1470 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1471 "%s", "recv probe req"); 1472 /* 1473 * Some legacy 11b clients cannot hack a complete 1474 * probe response frame. When the request includes 1475 * only a bare-bones rate set, communicate this to 1476 * the transmit side. 1477 */ 1478 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1479 break; 1480 } 1481 1482 case IEEE80211_FC0_SUBTYPE_ACTION: 1483 case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: 1484 if (ni == vap->iv_bss) { 1485 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1486 wh, NULL, "%s", "unknown node"); 1487 vap->iv_stats.is_rx_mgtdiscard++; 1488 } else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1489 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1490 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1491 wh, NULL, "%s", "not for us"); 1492 vap->iv_stats.is_rx_mgtdiscard++; 1493 } else if (vap->iv_state != IEEE80211_S_RUN) { 1494 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1495 wh, NULL, "wrong state %s", 1496 ieee80211_state_name[vap->iv_state]); 1497 vap->iv_stats.is_rx_mgtdiscard++; 1498 } else { 1499 if (ieee80211_parse_action(ni, m0) == 0) 1500 (void)ic->ic_recv_action(ni, wh, frm, efrm); 1501 } 1502 break; 1503 1504 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1505 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1506 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1507 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1508 case IEEE80211_FC0_SUBTYPE_ATIM: 1509 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1510 case IEEE80211_FC0_SUBTYPE_AUTH: 1511 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1512 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1513 wh, NULL, "%s", "not handled"); 1514 vap->iv_stats.is_rx_mgtdiscard++; 1515 break; 1516 1517 default: 1518 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1519 wh, "mgt", "subtype 0x%x not handled", subtype); 1520 vap->iv_stats.is_rx_badsubtype++; 1521 break; 1522 } 1523} 1524 1525static void 1526mesh_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 1527{ 1528 1529 switch (subtype) { 1530 case IEEE80211_FC0_SUBTYPE_BAR: 1531 ieee80211_recv_bar(ni, m); 1532 break; 1533 } 1534} 1535 1536/* 1537 * Parse meshpeering action ie's for open+confirm frames; the 1538 * important bits are returned in the supplied structure. 1539 */ 1540static const struct ieee80211_meshpeer_ie * 1541mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1542 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1543 const uint8_t *frm, const uint8_t *efrm, 1544 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1545{ 1546 struct ieee80211vap *vap = ni->ni_vap; 1547 const struct ieee80211_meshpeer_ie *mpie; 1548 const uint8_t *meshid, *meshconf, *meshpeer; 1549 1550 meshid = meshconf = meshpeer = NULL; 1551 while (efrm - frm > 1) { 1552 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1553 switch (*frm) { 1554 case IEEE80211_ELEMID_MESHID: 1555 meshid = frm; 1556 break; 1557 case IEEE80211_ELEMID_MESHCONF: 1558 meshconf = frm; 1559 break; 1560 case IEEE80211_ELEMID_MESHPEER: 1561 meshpeer = frm; 1562 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1563 memset(mp, 0, sizeof(*mp)); 1564 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1565 /* NB: peer link ID is optional on these frames */ 1566 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1567 mpie->peer_len == 8) { 1568 mp->peer_linkid = 0; 1569 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1570 } else { 1571 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1572 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1573 } 1574 break; 1575 } 1576 frm += frm[1] + 2; 1577 } 1578 1579 /* 1580 * Verify the contents of the frame. Action frames with 1581 * close subtype don't have a Mesh Configuration IE. 1582 * If if fails validation, close the peer link. 1583 */ 1584 KASSERT(meshpeer != NULL && 1585 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1586 ("parsing close action")); 1587 1588 if (mesh_verify_meshid(vap, meshid) || 1589 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1590 mesh_verify_meshconf(vap, meshconf)) { 1591 uint16_t args[3]; 1592 1593 IEEE80211_DISCARD(vap, 1594 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1595 wh, NULL, "%s", "not for our mesh"); 1596 vap->iv_stats.is_rx_mgtdiscard++; 1597 switch (ni->ni_mlstate) { 1598 case IEEE80211_NODE_MESH_IDLE: 1599 case IEEE80211_NODE_MESH_ESTABLISHED: 1600 case IEEE80211_NODE_MESH_HOLDING: 1601 /* ignore */ 1602 break; 1603 case IEEE80211_NODE_MESH_OPENSNT: 1604 case IEEE80211_NODE_MESH_OPENRCV: 1605 case IEEE80211_NODE_MESH_CONFIRMRCV: 1606 args[0] = ni->ni_mlpid; 1607 args[1] = ni->ni_mllid; 1608 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1609 ieee80211_send_action(ni, 1610 IEEE80211_ACTION_CAT_MESHPEERING, 1611 IEEE80211_ACTION_MESHPEERING_CLOSE, 1612 args); 1613 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1614 mesh_peer_timeout_setup(ni); 1615 break; 1616 } 1617 return NULL; 1618 } 1619 return (const struct ieee80211_meshpeer_ie *) mp; 1620} 1621 1622static int 1623mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1624 const struct ieee80211_frame *wh, 1625 const uint8_t *frm, const uint8_t *efrm) 1626{ 1627 struct ieee80211vap *vap = ni->ni_vap; 1628 struct ieee80211_meshpeer_ie ie; 1629 const struct ieee80211_meshpeer_ie *meshpeer; 1630 uint16_t args[3]; 1631 1632 /* +2+2 for action + code + capabilites */ 1633 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1634 IEEE80211_ACTION_MESHPEERING_OPEN); 1635 if (meshpeer == NULL) { 1636 return 0; 1637 } 1638 1639 /* XXX move up */ 1640 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1641 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1642 1643 switch (ni->ni_mlstate) { 1644 case IEEE80211_NODE_MESH_IDLE: 1645 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1646 ni->ni_mllid = meshpeer->peer_llinkid; 1647 ni->ni_mlpid = mesh_generateid(vap); 1648 if (ni->ni_mlpid == 0) 1649 return 0; /* XXX */ 1650 args[0] = ni->ni_mlpid; 1651 /* Announce we're open too... */ 1652 ieee80211_send_action(ni, 1653 IEEE80211_ACTION_CAT_MESHPEERING, 1654 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1655 /* ...and confirm the link. */ 1656 args[0] = ni->ni_mlpid; 1657 args[1] = ni->ni_mllid; 1658 ieee80211_send_action(ni, 1659 IEEE80211_ACTION_CAT_MESHPEERING, 1660 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1661 args); 1662 mesh_peer_timeout_setup(ni); 1663 break; 1664 case IEEE80211_NODE_MESH_OPENRCV: 1665 /* Wrong Link ID */ 1666 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1667 args[0] = ni->ni_mllid; 1668 args[1] = ni->ni_mlpid; 1669 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1670 ieee80211_send_action(ni, 1671 IEEE80211_ACTION_CAT_MESHPEERING, 1672 IEEE80211_ACTION_MESHPEERING_CLOSE, 1673 args); 1674 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1675 mesh_peer_timeout_setup(ni); 1676 break; 1677 } 1678 /* Duplicate open, confirm again. */ 1679 args[0] = ni->ni_mlpid; 1680 args[1] = ni->ni_mllid; 1681 ieee80211_send_action(ni, 1682 IEEE80211_ACTION_CAT_MESHPEERING, 1683 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1684 args); 1685 break; 1686 case IEEE80211_NODE_MESH_OPENSNT: 1687 ni->ni_mllid = meshpeer->peer_llinkid; 1688 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1689 args[0] = ni->ni_mlpid; 1690 args[1] = ni->ni_mllid; 1691 ieee80211_send_action(ni, 1692 IEEE80211_ACTION_CAT_MESHPEERING, 1693 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1694 args); 1695 /* NB: don't setup/clear any timeout */ 1696 break; 1697 case IEEE80211_NODE_MESH_CONFIRMRCV: 1698 if (ni->ni_mlpid != meshpeer->peer_linkid || 1699 ni->ni_mllid != meshpeer->peer_llinkid) { 1700 args[0] = ni->ni_mlpid; 1701 args[1] = ni->ni_mllid; 1702 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1703 ieee80211_send_action(ni, 1704 IEEE80211_ACTION_CAT_MESHPEERING, 1705 IEEE80211_ACTION_MESHPEERING_CLOSE, 1706 args); 1707 mesh_linkchange(ni, 1708 IEEE80211_NODE_MESH_HOLDING); 1709 mesh_peer_timeout_setup(ni); 1710 break; 1711 } 1712 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1713 ni->ni_mllid = meshpeer->peer_llinkid; 1714 args[0] = ni->ni_mlpid; 1715 args[1] = ni->ni_mllid; 1716 ieee80211_send_action(ni, 1717 IEEE80211_ACTION_CAT_MESHPEERING, 1718 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1719 args); 1720 mesh_peer_timeout_stop(ni); 1721 break; 1722 case IEEE80211_NODE_MESH_ESTABLISHED: 1723 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1724 args[0] = ni->ni_mllid; 1725 args[1] = ni->ni_mlpid; 1726 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1727 ieee80211_send_action(ni, 1728 IEEE80211_ACTION_CAT_MESHPEERING, 1729 IEEE80211_ACTION_MESHPEERING_CLOSE, 1730 args); 1731 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1732 mesh_peer_timeout_setup(ni); 1733 break; 1734 } 1735 args[0] = ni->ni_mlpid; 1736 args[1] = ni->ni_mllid; 1737 ieee80211_send_action(ni, 1738 IEEE80211_ACTION_CAT_MESHPEERING, 1739 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1740 args); 1741 break; 1742 case IEEE80211_NODE_MESH_HOLDING: 1743 args[0] = ni->ni_mlpid; 1744 args[1] = meshpeer->peer_llinkid; 1745 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1746 ieee80211_send_action(ni, 1747 IEEE80211_ACTION_CAT_MESHPEERING, 1748 IEEE80211_ACTION_MESHPEERING_CLOSE, 1749 args); 1750 break; 1751 } 1752 return 0; 1753} 1754 1755static int 1756mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1757 const struct ieee80211_frame *wh, 1758 const uint8_t *frm, const uint8_t *efrm) 1759{ 1760 struct ieee80211vap *vap = ni->ni_vap; 1761 struct ieee80211_meshpeer_ie ie; 1762 const struct ieee80211_meshpeer_ie *meshpeer; 1763 uint16_t args[3]; 1764 1765 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1766 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1767 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1768 if (meshpeer == NULL) { 1769 return 0; 1770 } 1771 1772 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1773 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1774 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1775 1776 switch (ni->ni_mlstate) { 1777 case IEEE80211_NODE_MESH_OPENRCV: 1778 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1779 mesh_peer_timeout_stop(ni); 1780 break; 1781 case IEEE80211_NODE_MESH_OPENSNT: 1782 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1783 break; 1784 case IEEE80211_NODE_MESH_HOLDING: 1785 args[0] = ni->ni_mlpid; 1786 args[1] = meshpeer->peer_llinkid; 1787 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1788 ieee80211_send_action(ni, 1789 IEEE80211_ACTION_CAT_MESHPEERING, 1790 IEEE80211_ACTION_MESHPEERING_CLOSE, 1791 args); 1792 break; 1793 case IEEE80211_NODE_MESH_CONFIRMRCV: 1794 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1795 args[0] = ni->ni_mlpid; 1796 args[1] = ni->ni_mllid; 1797 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1798 ieee80211_send_action(ni, 1799 IEEE80211_ACTION_CAT_MESHPEERING, 1800 IEEE80211_ACTION_MESHPEERING_CLOSE, 1801 args); 1802 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1803 mesh_peer_timeout_setup(ni); 1804 } 1805 break; 1806 default: 1807 IEEE80211_DISCARD(vap, 1808 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1809 wh, NULL, "received confirm in invalid state %d", 1810 ni->ni_mlstate); 1811 vap->iv_stats.is_rx_mgtdiscard++; 1812 break; 1813 } 1814 return 0; 1815} 1816 1817static int 1818mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1819 const struct ieee80211_frame *wh, 1820 const uint8_t *frm, const uint8_t *efrm) 1821{ 1822 uint16_t args[3]; 1823 1824 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1825 ni, "%s", "recv PEER CLOSE"); 1826 1827 switch (ni->ni_mlstate) { 1828 case IEEE80211_NODE_MESH_IDLE: 1829 /* ignore */ 1830 break; 1831 case IEEE80211_NODE_MESH_OPENRCV: 1832 case IEEE80211_NODE_MESH_OPENSNT: 1833 case IEEE80211_NODE_MESH_CONFIRMRCV: 1834 case IEEE80211_NODE_MESH_ESTABLISHED: 1835 args[0] = ni->ni_mlpid; 1836 args[1] = ni->ni_mllid; 1837 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1838 ieee80211_send_action(ni, 1839 IEEE80211_ACTION_CAT_MESHPEERING, 1840 IEEE80211_ACTION_MESHPEERING_CLOSE, 1841 args); 1842 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1843 mesh_peer_timeout_setup(ni); 1844 break; 1845 case IEEE80211_NODE_MESH_HOLDING: 1846 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1847 mesh_peer_timeout_setup(ni); 1848 break; 1849 } 1850 return 0; 1851} 1852 1853/* 1854 * Link Metric handling. 1855 */ 1856static int 1857mesh_recv_action_meshlmetric(struct ieee80211_node *ni, 1858 const struct ieee80211_frame *wh, 1859 const uint8_t *frm, const uint8_t *efrm) 1860{ 1861 const struct ieee80211_meshlmetric_ie *ie = 1862 (const struct ieee80211_meshlmetric_ie *) 1863 (frm+2); /* action + code */ 1864 struct ieee80211_meshlmetric_ie lm_rep; 1865 1866 if (ie->lm_flags & IEEE80211_MESH_LMETRIC_FLAGS_REQ) { 1867 lm_rep.lm_flags = 0; 1868 lm_rep.lm_metric = mesh_airtime_calc(ni); 1869 ieee80211_send_action(ni, 1870 IEEE80211_ACTION_CAT_MESH, 1871 IEEE80211_ACTION_MESH_LMETRIC, 1872 &lm_rep); 1873 } 1874 /* XXX: else do nothing for now */ 1875 return 0; 1876} 1877 1878static int 1879mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1880{ 1881 struct ieee80211_bpf_params params; 1882 1883 memset(¶ms, 0, sizeof(params)); 1884 params.ibp_pri = WME_AC_VO; 1885 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1886 /* XXX ucast/mcast */ 1887 params.ibp_try0 = ni->ni_txparms->maxretry; 1888 params.ibp_power = ni->ni_txpower; 1889 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1890 ¶ms); 1891} 1892 1893#define ADDSHORT(frm, v) do { \ 1894 frm[0] = (v) & 0xff; \ 1895 frm[1] = (v) >> 8; \ 1896 frm += 2; \ 1897} while (0) 1898#define ADDWORD(frm, v) do { \ 1899 frm[0] = (v) & 0xff; \ 1900 frm[1] = ((v) >> 8) & 0xff; \ 1901 frm[2] = ((v) >> 16) & 0xff; \ 1902 frm[3] = ((v) >> 24) & 0xff; \ 1903 frm += 4; \ 1904} while (0) 1905 1906static int 1907mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1908 int category, int action, void *args0) 1909{ 1910 struct ieee80211vap *vap = ni->ni_vap; 1911 struct ieee80211com *ic = ni->ni_ic; 1912 uint16_t *args = args0; 1913 const struct ieee80211_rateset *rs; 1914 struct mbuf *m; 1915 uint8_t *frm; 1916 1917 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1918 "send PEER OPEN action: localid 0x%x", args[0]); 1919 1920 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1921 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1922 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1923 ieee80211_ref_node(ni); 1924 1925 m = ieee80211_getmgtframe(&frm, 1926 ic->ic_headroom + sizeof(struct ieee80211_frame), 1927 sizeof(uint16_t) /* action+category */ 1928 + sizeof(uint16_t) /* capabilites */ 1929 + 2 + IEEE80211_RATE_SIZE 1930 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1931 + 2 + IEEE80211_MESHID_LEN 1932 + sizeof(struct ieee80211_meshconf_ie) 1933 + sizeof(struct ieee80211_meshpeer_ie) 1934 ); 1935 if (m != NULL) { 1936 /* 1937 * mesh peer open action frame format: 1938 * [1] category 1939 * [1] action 1940 * [2] capabilities 1941 * [tlv] rates 1942 * [tlv] xrates 1943 * [tlv] mesh id 1944 * [tlv] mesh conf 1945 * [tlv] mesh peer link mgmt 1946 */ 1947 *frm++ = category; 1948 *frm++ = action; 1949 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1950 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1951 frm = ieee80211_add_rates(frm, rs); 1952 frm = ieee80211_add_xrates(frm, rs); 1953 frm = ieee80211_add_meshid(frm, vap); 1954 frm = ieee80211_add_meshconf(frm, vap); 1955 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1956 args[0], 0, 0); 1957 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1958 return mesh_send_action(ni, m); 1959 } else { 1960 vap->iv_stats.is_tx_nobuf++; 1961 ieee80211_free_node(ni); 1962 return ENOMEM; 1963 } 1964} 1965 1966static int 1967mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1968 int category, int action, void *args0) 1969{ 1970 struct ieee80211vap *vap = ni->ni_vap; 1971 struct ieee80211com *ic = ni->ni_ic; 1972 uint16_t *args = args0; 1973 const struct ieee80211_rateset *rs; 1974 struct mbuf *m; 1975 uint8_t *frm; 1976 1977 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1978 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1979 args[0], args[1]); 1980 1981 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1982 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1983 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1984 ieee80211_ref_node(ni); 1985 1986 m = ieee80211_getmgtframe(&frm, 1987 ic->ic_headroom + sizeof(struct ieee80211_frame), 1988 sizeof(uint16_t) /* action+category */ 1989 + sizeof(uint16_t) /* capabilites */ 1990 + sizeof(uint16_t) /* status code */ 1991 + sizeof(uint16_t) /* AID */ 1992 + 2 + IEEE80211_RATE_SIZE 1993 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1994 + 2 + IEEE80211_MESHID_LEN 1995 + sizeof(struct ieee80211_meshconf_ie) 1996 + sizeof(struct ieee80211_meshpeer_ie) 1997 ); 1998 if (m != NULL) { 1999 /* 2000 * mesh peer confirm action frame format: 2001 * [1] category 2002 * [1] action 2003 * [2] capabilities 2004 * [2] status code 2005 * [2] association id (peer ID) 2006 * [tlv] rates 2007 * [tlv] xrates 2008 * [tlv] mesh id 2009 * [tlv] mesh conf 2010 * [tlv] mesh peer link mgmt 2011 */ 2012 *frm++ = category; 2013 *frm++ = action; 2014 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2015 ADDSHORT(frm, 0); /* status code */ 2016 ADDSHORT(frm, args[1]); /* AID */ 2017 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2018 frm = ieee80211_add_rates(frm, rs); 2019 frm = ieee80211_add_xrates(frm, rs); 2020 frm = ieee80211_add_meshid(frm, vap); 2021 frm = ieee80211_add_meshconf(frm, vap); 2022 frm = ieee80211_add_meshpeer(frm, 2023 IEEE80211_MESH_PEER_LINK_CONFIRM, 2024 args[0], args[1], 0); 2025 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2026 return mesh_send_action(ni, m); 2027 } else { 2028 vap->iv_stats.is_tx_nobuf++; 2029 ieee80211_free_node(ni); 2030 return ENOMEM; 2031 } 2032} 2033 2034static int 2035mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2036 int category, int action, void *args0) 2037{ 2038 struct ieee80211vap *vap = ni->ni_vap; 2039 struct ieee80211com *ic = ni->ni_ic; 2040 uint16_t *args = args0; 2041 struct mbuf *m; 2042 uint8_t *frm; 2043 2044 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2045 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2046 args[0], args[1], args[2]); 2047 2048 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2049 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2050 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2051 ieee80211_ref_node(ni); 2052 2053 m = ieee80211_getmgtframe(&frm, 2054 ic->ic_headroom + sizeof(struct ieee80211_frame), 2055 sizeof(uint16_t) /* action+category */ 2056 + sizeof(uint16_t) /* reason code */ 2057 + 2 + IEEE80211_MESHID_LEN 2058 + sizeof(struct ieee80211_meshpeer_ie) 2059 ); 2060 if (m != NULL) { 2061 /* 2062 * mesh peer close action frame format: 2063 * [1] category 2064 * [1] action 2065 * [2] reason code 2066 * [tlv] mesh id 2067 * [tlv] mesh peer link mgmt 2068 */ 2069 *frm++ = category; 2070 *frm++ = action; 2071 ADDSHORT(frm, args[2]); /* reason code */ 2072 frm = ieee80211_add_meshid(frm, vap); 2073 frm = ieee80211_add_meshpeer(frm, 2074 IEEE80211_MESH_PEER_LINK_CLOSE, 2075 args[0], args[1], args[2]); 2076 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2077 return mesh_send_action(ni, m); 2078 } else { 2079 vap->iv_stats.is_tx_nobuf++; 2080 ieee80211_free_node(ni); 2081 return ENOMEM; 2082 } 2083} 2084 2085static int 2086mesh_send_action_meshlmetric(struct ieee80211_node *ni, 2087 int category, int action, void *arg0) 2088{ 2089 struct ieee80211vap *vap = ni->ni_vap; 2090 struct ieee80211com *ic = ni->ni_ic; 2091 struct ieee80211_meshlmetric_ie *ie = arg0; 2092 struct mbuf *m; 2093 uint8_t *frm; 2094 2095 if (ie->lm_flags & IEEE80211_MESH_LMETRIC_FLAGS_REQ) { 2096 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2097 ni, "%s", "send LINK METRIC REQUEST action"); 2098 } else { 2099 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2100 ni, "send LINK METRIC REPLY action: metric 0x%x", 2101 ie->lm_metric); 2102 } 2103 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2104 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2105 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2106 ieee80211_ref_node(ni); 2107 2108 m = ieee80211_getmgtframe(&frm, 2109 ic->ic_headroom + sizeof(struct ieee80211_frame), 2110 sizeof(uint16_t) + /* action+category */ 2111 sizeof(struct ieee80211_meshlmetric_ie) 2112 ); 2113 if (m != NULL) { 2114 /* 2115 * mesh link metric 2116 * [1] category 2117 * [1] action 2118 * [tlv] mesh link metric 2119 */ 2120 *frm++ = category; 2121 *frm++ = action; 2122 frm = ieee80211_add_meshlmetric(frm, 2123 ie->lm_flags, ie->lm_metric); 2124 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2125 return mesh_send_action(ni, m); 2126 } else { 2127 vap->iv_stats.is_tx_nobuf++; 2128 ieee80211_free_node(ni); 2129 return ENOMEM; 2130 } 2131} 2132 2133static void 2134mesh_peer_timeout_setup(struct ieee80211_node *ni) 2135{ 2136 switch (ni->ni_mlstate) { 2137 case IEEE80211_NODE_MESH_HOLDING: 2138 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2139 break; 2140 case IEEE80211_NODE_MESH_CONFIRMRCV: 2141 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2142 break; 2143 case IEEE80211_NODE_MESH_IDLE: 2144 ni->ni_mltval = 0; 2145 break; 2146 default: 2147 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2148 break; 2149 } 2150 if (ni->ni_mltval) 2151 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2152 mesh_peer_timeout_cb, ni); 2153} 2154 2155/* 2156 * Same as above but backoffs timer statisically 50%. 2157 */ 2158static void 2159mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2160{ 2161 uint32_t r; 2162 2163 r = arc4random(); 2164 ni->ni_mltval += r % ni->ni_mltval; 2165 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2166 ni); 2167} 2168 2169static __inline void 2170mesh_peer_timeout_stop(struct ieee80211_node *ni) 2171{ 2172 callout_drain(&ni->ni_mltimer); 2173} 2174 2175/* 2176 * Mesh Peer Link Management FSM timeout handling. 2177 */ 2178static void 2179mesh_peer_timeout_cb(void *arg) 2180{ 2181 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2182 uint16_t args[3]; 2183 2184 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2185 ni, "mesh link timeout, state %d, retry counter %d", 2186 ni->ni_mlstate, ni->ni_mlrcnt); 2187 2188 switch (ni->ni_mlstate) { 2189 case IEEE80211_NODE_MESH_IDLE: 2190 case IEEE80211_NODE_MESH_ESTABLISHED: 2191 break; 2192 case IEEE80211_NODE_MESH_OPENSNT: 2193 case IEEE80211_NODE_MESH_OPENRCV: 2194 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2195 args[0] = ni->ni_mlpid; 2196 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2197 ieee80211_send_action(ni, 2198 IEEE80211_ACTION_CAT_MESHPEERING, 2199 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2200 ni->ni_mlrcnt = 0; 2201 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2202 mesh_peer_timeout_setup(ni); 2203 } else { 2204 args[0] = ni->ni_mlpid; 2205 ieee80211_send_action(ni, 2206 IEEE80211_ACTION_CAT_MESHPEERING, 2207 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2208 ni->ni_mlrcnt++; 2209 mesh_peer_timeout_backoff(ni); 2210 } 2211 break; 2212 case IEEE80211_NODE_MESH_CONFIRMRCV: 2213 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2214 args[0] = ni->ni_mlpid; 2215 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2216 ieee80211_send_action(ni, 2217 IEEE80211_ACTION_CAT_MESHPEERING, 2218 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2219 ni->ni_mlrcnt = 0; 2220 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2221 mesh_peer_timeout_setup(ni); 2222 } else { 2223 ni->ni_mlrcnt++; 2224 mesh_peer_timeout_setup(ni); 2225 } 2226 break; 2227 case IEEE80211_NODE_MESH_HOLDING: 2228 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2229 break; 2230 } 2231} 2232 2233static int 2234mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2235{ 2236 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2237 2238 if (ie == NULL || ie[1] != ms->ms_idlen) 2239 return 1; 2240 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2241} 2242 2243/* 2244 * Check if we are using the same algorithms for this mesh. 2245 */ 2246static int 2247mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2248{ 2249 const struct ieee80211_meshconf_ie *meshconf = 2250 (const struct ieee80211_meshconf_ie *) ie; 2251 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2252 2253 if (meshconf == NULL) 2254 return 1; 2255 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2256 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2257 "unknown path selection algorithm: 0x%x\n", 2258 meshconf->conf_pselid); 2259 return 1; 2260 } 2261 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2262 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2263 "unknown path metric algorithm: 0x%x\n", 2264 meshconf->conf_pmetid); 2265 return 1; 2266 } 2267 if (meshconf->conf_ccid != 0) { 2268 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2269 "unknown congestion control algorithm: 0x%x\n", 2270 meshconf->conf_ccid); 2271 return 1; 2272 } 2273 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2274 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2275 "unknown sync algorithm: 0x%x\n", 2276 meshconf->conf_syncid); 2277 return 1; 2278 } 2279 if (meshconf->conf_authid != 0) { 2280 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2281 "unknown auth auth algorithm: 0x%x\n", 2282 meshconf->conf_pselid); 2283 return 1; 2284 } 2285 /* Not accepting peers */ 2286 if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) { 2287 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2288 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2289 return 1; 2290 } 2291 return 0; 2292} 2293 2294static int 2295mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2296 const uint8_t *ie) 2297{ 2298 const struct ieee80211_meshpeer_ie *meshpeer = 2299 (const struct ieee80211_meshpeer_ie *) ie; 2300 2301 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2302 meshpeer->peer_len > 10) 2303 return 1; 2304 switch (subtype) { 2305 case IEEE80211_MESH_PEER_LINK_OPEN: 2306 if (meshpeer->peer_len != 6) 2307 return 1; 2308 break; 2309 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2310 if (meshpeer->peer_len != 8) 2311 return 1; 2312 break; 2313 case IEEE80211_MESH_PEER_LINK_CLOSE: 2314 if (meshpeer->peer_len < 8) 2315 return 1; 2316 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2317 return 1; 2318 if (meshpeer->peer_rcode == 0) 2319 return 1; 2320 break; 2321 } 2322 return 0; 2323} 2324 2325/* 2326 * Add a Mesh ID IE to a frame. 2327 */ 2328uint8_t * 2329ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2330{ 2331 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2332 2333 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2334 2335 *frm++ = IEEE80211_ELEMID_MESHID; 2336 *frm++ = ms->ms_idlen; 2337 memcpy(frm, ms->ms_id, ms->ms_idlen); 2338 return frm + ms->ms_idlen; 2339} 2340 2341/* 2342 * Add a Mesh Configuration IE to a frame. 2343 * For now just use HWMP routing, Airtime link metric, Null Congestion 2344 * Signaling, Null Sync Protocol and Null Authentication. 2345 */ 2346uint8_t * 2347ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2348{ 2349 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2350 uint16_t caps; 2351 2352 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2353 2354 *frm++ = IEEE80211_ELEMID_MESHCONF; 2355 *frm++ = IEEE80211_MESH_CONF_SZ; 2356 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2357 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2358 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2359 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2360 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2361 /* NB: set the number of neighbors before the rest */ 2362 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2363 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2364 *frm |= IEEE80211_MESHCONF_FORM_MP; 2365 frm += 1; 2366 caps = 0; 2367 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2368 caps |= IEEE80211_MESHCONF_CAP_AP; 2369 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2370 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2371 *frm++ = caps; 2372 return frm; 2373} 2374 2375/* 2376 * Add a Mesh Peer Management IE to a frame. 2377 */ 2378uint8_t * 2379ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2380 uint16_t peerid, uint16_t reason) 2381{ 2382 /* XXX change for AH */ 2383 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2384 2385 KASSERT(localid != 0, ("localid == 0")); 2386 2387 *frm++ = IEEE80211_ELEMID_MESHPEER; 2388 switch (subtype) { 2389 case IEEE80211_MESH_PEER_LINK_OPEN: 2390 *frm++ = 6; /* length */ 2391 memcpy(frm, meshpeerproto, 4); 2392 frm += 4; 2393 ADDSHORT(frm, localid); /* local ID */ 2394 break; 2395 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2396 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2397 *frm++ = 8; /* length */ 2398 memcpy(frm, meshpeerproto, 4); 2399 frm += 4; 2400 ADDSHORT(frm, localid); /* local ID */ 2401 ADDSHORT(frm, peerid); /* peer ID */ 2402 break; 2403 case IEEE80211_MESH_PEER_LINK_CLOSE: 2404 if (peerid) 2405 *frm++ = 10; /* length */ 2406 else 2407 *frm++ = 8; /* length */ 2408 memcpy(frm, meshpeerproto, 4); 2409 frm += 4; 2410 ADDSHORT(frm, localid); /* local ID */ 2411 if (peerid) 2412 ADDSHORT(frm, peerid); /* peer ID */ 2413 ADDSHORT(frm, reason); 2414 break; 2415 } 2416 return frm; 2417} 2418 2419/* 2420 * Compute an Airtime Link Metric for the link with this node. 2421 * 2422 * Based on Draft 3.0 spec (11B.10, p.149). 2423 */ 2424/* 2425 * Max 802.11s overhead. 2426 */ 2427#define IEEE80211_MESH_MAXOVERHEAD \ 2428 (sizeof(struct ieee80211_qosframe_addr4) \ 2429 + sizeof(struct ieee80211_meshcntl_ae11) \ 2430 + sizeof(struct llc) \ 2431 + IEEE80211_ADDR_LEN \ 2432 + IEEE80211_WEP_IVLEN \ 2433 + IEEE80211_WEP_KIDLEN \ 2434 + IEEE80211_WEP_CRCLEN \ 2435 + IEEE80211_WEP_MICLEN \ 2436 + IEEE80211_CRC_LEN) 2437uint32_t 2438mesh_airtime_calc(struct ieee80211_node *ni) 2439{ 2440#define M_BITS 8 2441#define S_FACTOR (2 * M_BITS) 2442 struct ieee80211com *ic = ni->ni_ic; 2443 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2444 const static int nbits = 8192 << M_BITS; 2445 uint32_t overhead, rate, errrate; 2446 uint64_t res; 2447 2448 /* Time to transmit a frame */ 2449 rate = ni->ni_txrate; 2450 overhead = ieee80211_compute_duration(ic->ic_rt, 2451 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2452 /* Error rate in percentage */ 2453 /* XXX assuming small failures are ok */ 2454 errrate = (((ifp->if_oerrors + 2455 ifp->if_ierrors) / 100) << M_BITS) / 100; 2456 res = (overhead + (nbits / rate)) * 2457 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2458 2459 return (uint32_t)(res >> S_FACTOR); 2460#undef M_BITS 2461#undef S_FACTOR 2462} 2463 2464/* 2465 * Add a Mesh Link Metric report IE to a frame. 2466 */ 2467uint8_t * 2468ieee80211_add_meshlmetric(uint8_t *frm, uint8_t flags, uint32_t metric) 2469{ 2470 *frm++ = IEEE80211_ELEMID_MESHLINK; 2471 *frm++ = 5; 2472 *frm++ = flags; 2473 ADDWORD(frm, metric); 2474 return frm; 2475} 2476#undef ADDSHORT 2477#undef ADDWORD 2478 2479/* 2480 * Initialize any mesh-specific node state. 2481 */ 2482void 2483ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2484{ 2485 ni->ni_flags |= IEEE80211_NODE_QOS; 2486 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2487} 2488 2489/* 2490 * Cleanup any mesh-specific node state. 2491 */ 2492void 2493ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2494{ 2495 struct ieee80211vap *vap = ni->ni_vap; 2496 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2497 2498 callout_drain(&ni->ni_mltimer); 2499 /* NB: short-circuit callbacks after mesh_vdetach */ 2500 if (vap->iv_mesh != NULL) 2501 ms->ms_ppath->mpp_peerdown(ni); 2502} 2503 2504void 2505ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2506{ 2507 ni->ni_meshidlen = ie[1]; 2508 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2509} 2510 2511/* 2512 * Setup mesh-specific node state on neighbor discovery. 2513 */ 2514void 2515ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2516 const struct ieee80211_frame *wh, 2517 const struct ieee80211_scanparams *sp) 2518{ 2519 ieee80211_parse_meshid(ni, sp->meshid); 2520} 2521 2522void 2523ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2524 struct ieee80211_beacon_offsets *bo) 2525{ 2526 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2527 2528 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2529 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2530 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2531 } 2532} 2533 2534static int 2535mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2536{ 2537 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2538 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2539 struct ieee80211_mesh_route *rt; 2540 struct ieee80211req_mesh_route *imr; 2541 size_t len, off; 2542 uint8_t *p; 2543 int error; 2544 2545 if (vap->iv_opmode != IEEE80211_M_MBSS) 2546 return ENOSYS; 2547 2548 error = 0; 2549 switch (ireq->i_type) { 2550 case IEEE80211_IOC_MESH_ID: 2551 ireq->i_len = ms->ms_idlen; 2552 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2553 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2554 break; 2555 case IEEE80211_IOC_MESH_AP: 2556 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2557 break; 2558 case IEEE80211_IOC_MESH_FWRD: 2559 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2560 break; 2561 case IEEE80211_IOC_MESH_TTL: 2562 ireq->i_val = ms->ms_ttl; 2563 break; 2564 case IEEE80211_IOC_MESH_RTCMD: 2565 switch (ireq->i_val) { 2566 case IEEE80211_MESH_RTCMD_LIST: 2567 len = 0; 2568 MESH_RT_LOCK(ms); 2569 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2570 len += sizeof(*imr); 2571 } 2572 MESH_RT_UNLOCK(ms); 2573 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2574 ireq->i_len = len; 2575 return ENOMEM; 2576 } 2577 ireq->i_len = len; 2578 /* XXX M_WAIT? */ 2579 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2580 if (p == NULL) 2581 return ENOMEM; 2582 off = 0; 2583 MESH_RT_LOCK(ms); 2584 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2585 if (off >= len) 2586 break; 2587 imr = (struct ieee80211req_mesh_route *) 2588 (p + off); 2589 imr->imr_flags = rt->rt_flags; 2590 IEEE80211_ADDR_COPY(imr->imr_dest, 2591 rt->rt_dest); 2592 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2593 rt->rt_nexthop); 2594 imr->imr_metric = rt->rt_metric; 2595 imr->imr_nhops = rt->rt_nhops; 2596 imr->imr_lifetime = rt->rt_lifetime; 2597 imr->imr_lastmseq = rt->rt_lastmseq; 2598 off += sizeof(*imr); 2599 } 2600 MESH_RT_UNLOCK(ms); 2601 error = copyout(p, (uint8_t *)ireq->i_data, 2602 ireq->i_len); 2603 free(p, M_TEMP); 2604 break; 2605 case IEEE80211_MESH_RTCMD_FLUSH: 2606 case IEEE80211_MESH_RTCMD_ADD: 2607 case IEEE80211_MESH_RTCMD_DELETE: 2608 return EINVAL; 2609 default: 2610 return ENOSYS; 2611 } 2612 break; 2613 case IEEE80211_IOC_MESH_PR_METRIC: 2614 len = strlen(ms->ms_pmetric->mpm_descr); 2615 if (ireq->i_len < len) 2616 return EINVAL; 2617 ireq->i_len = len; 2618 error = copyout(ms->ms_pmetric->mpm_descr, 2619 (uint8_t *)ireq->i_data, len); 2620 break; 2621 case IEEE80211_IOC_MESH_PR_PATH: 2622 len = strlen(ms->ms_ppath->mpp_descr); 2623 if (ireq->i_len < len) 2624 return EINVAL; 2625 ireq->i_len = len; 2626 error = copyout(ms->ms_ppath->mpp_descr, 2627 (uint8_t *)ireq->i_data, len); 2628 break; 2629 default: 2630 return ENOSYS; 2631 } 2632 2633 return error; 2634} 2635IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2636 2637static int 2638mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2639{ 2640 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2641 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2642 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2643 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2644 int error; 2645 2646 if (vap->iv_opmode != IEEE80211_M_MBSS) 2647 return ENOSYS; 2648 2649 error = 0; 2650 switch (ireq->i_type) { 2651 case IEEE80211_IOC_MESH_ID: 2652 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2653 return EINVAL; 2654 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2655 if (error != 0) 2656 break; 2657 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2658 ms->ms_idlen = ireq->i_len; 2659 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2660 error = ENETRESET; 2661 break; 2662 case IEEE80211_IOC_MESH_AP: 2663 if (ireq->i_val) 2664 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2665 else 2666 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2667 error = ENETRESET; 2668 break; 2669 case IEEE80211_IOC_MESH_FWRD: 2670 if (ireq->i_val) 2671 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2672 else 2673 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2674 break; 2675 case IEEE80211_IOC_MESH_TTL: 2676 ms->ms_ttl = (uint8_t) ireq->i_val; 2677 break; 2678 case IEEE80211_IOC_MESH_RTCMD: 2679 switch (ireq->i_val) { 2680 case IEEE80211_MESH_RTCMD_LIST: 2681 return EINVAL; 2682 case IEEE80211_MESH_RTCMD_FLUSH: 2683 ieee80211_mesh_rt_flush(vap); 2684 break; 2685 case IEEE80211_MESH_RTCMD_ADD: 2686 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2687 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2688 return EINVAL; 2689 error = copyin(ireq->i_data, &tmpaddr, 2690 IEEE80211_ADDR_LEN); 2691 if (error == 0) 2692 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2693 break; 2694 case IEEE80211_MESH_RTCMD_DELETE: 2695 ieee80211_mesh_rt_del(vap, ireq->i_data); 2696 break; 2697 default: 2698 return ENOSYS; 2699 } 2700 break; 2701 case IEEE80211_IOC_MESH_PR_METRIC: 2702 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2703 if (error == 0) { 2704 error = mesh_select_proto_metric(vap, tmpproto); 2705 if (error == 0) 2706 error = ENETRESET; 2707 } 2708 break; 2709 case IEEE80211_IOC_MESH_PR_PATH: 2710 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2711 if (error == 0) { 2712 error = mesh_select_proto_path(vap, tmpproto); 2713 if (error == 0) 2714 error = ENETRESET; 2715 } 2716 break; 2717 default: 2718 return ENOSYS; 2719 } 2720 return error; 2721} 2722IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2723