ieee80211_mesh.c revision 198346
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 198346 2009-10-21 19:31:23Z rpaulo $"); 32#endif 33 34/* 35 * IEEE 802.11s Mesh Point (MBSS) support. 36 * 37 * Based on March 2009, D3.0 802.11s draft spec. 38 */ 39#include "opt_inet.h" 40#include "opt_wlan.h" 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/mbuf.h> 45#include <sys/malloc.h> 46#include <sys/kernel.h> 47 48#include <sys/socket.h> 49#include <sys/sockio.h> 50#include <sys/endian.h> 51#include <sys/errno.h> 52#include <sys/proc.h> 53#include <sys/sysctl.h> 54 55#include <net/if.h> 56#include <net/if_media.h> 57#include <net/if_llc.h> 58#include <net/ethernet.h> 59 60#include <net80211/ieee80211_var.h> 61#include <net80211/ieee80211_action.h> 62#include <net80211/ieee80211_input.h> 63#include <net80211/ieee80211_mesh.h> 64 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_peer_timeout_setup(struct ieee80211_node *); 86static void mesh_peer_timeout_backoff(struct ieee80211_node *); 87static void mesh_peer_timeout_cb(void *); 88static __inline void 89 mesh_peer_timeout_stop(struct ieee80211_node *); 90static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 91static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 92static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 93 const uint8_t *); 94uint32_t mesh_airtime_calc(struct ieee80211_node *); 95 96/* 97 * Timeout values come from the specification and are in milliseconds. 98 */ 99SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 100 "IEEE 802.11s parameters"); 101static int ieee80211_mesh_retrytimeout = -1; 102SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 103 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 104 "Retry timeout (msec)"); 105static int ieee80211_mesh_holdingtimeout = -1; 106SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 107 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 108 "Holding state timeout (msec)"); 109static int ieee80211_mesh_confirmtimeout = -1; 110SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 111 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 112 "Confirm state timeout (msec)"); 113static int ieee80211_mesh_maxretries = 2; 114SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 115 &ieee80211_mesh_maxretries, 0, 116 "Maximum retries during peer link establishment"); 117 118static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 119 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 120 121static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 122static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 123static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 124static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req; 125static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep; 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_meshlink_request; 131static ieee80211_send_action_func mesh_send_action_meshlink_reply; 132 133static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 134 .mpm_descr = "AIRTIME", 135 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 136 .mpm_metric = mesh_airtime_calc, 137}; 138 139static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 140static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 141 142#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) 143#define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 144#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 145 146MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 147 148/* 149 * Helper functions to manipulate the Mesh routing table. 150 */ 151 152static struct ieee80211_mesh_route * 153mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 154 const uint8_t dest[IEEE80211_ADDR_LEN]) 155{ 156 struct ieee80211_mesh_route *rt; 157 158 MESH_RT_LOCK_ASSERT(ms); 159 160 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 161 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 162 return rt; 163 } 164 return NULL; 165} 166 167static struct ieee80211_mesh_route * 168mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 169 const uint8_t dest[IEEE80211_ADDR_LEN]) 170{ 171 struct ieee80211_mesh_route *rt; 172 173 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 174 ("%s: adding broadcast to the routing table", __func__)); 175 176 MESH_RT_LOCK_ASSERT(ms); 177 178 rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 179 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 180 if (rt != NULL) { 181 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 182 rt->rt_priv = (void *)ALIGN(&rt[1]); 183 rt->rt_crtime = ticks; 184 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 185 } 186 return rt; 187} 188 189struct ieee80211_mesh_route * 190ieee80211_mesh_rt_find(struct ieee80211vap *vap, 191 const uint8_t dest[IEEE80211_ADDR_LEN]) 192{ 193 struct ieee80211_mesh_state *ms = vap->iv_mesh; 194 struct ieee80211_mesh_route *rt; 195 196 MESH_RT_LOCK(ms); 197 rt = mesh_rt_find_locked(ms, dest); 198 MESH_RT_UNLOCK(ms); 199 return rt; 200} 201 202struct ieee80211_mesh_route * 203ieee80211_mesh_rt_add(struct ieee80211vap *vap, 204 const uint8_t dest[IEEE80211_ADDR_LEN]) 205{ 206 struct ieee80211_mesh_state *ms = vap->iv_mesh; 207 struct ieee80211_mesh_route *rt; 208 209 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 210 ("%s: duplicate entry in the routing table", __func__)); 211 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 212 ("%s: adding self to the routing table", __func__)); 213 214 MESH_RT_LOCK(ms); 215 rt = mesh_rt_add_locked(ms, dest); 216 MESH_RT_UNLOCK(ms); 217 return rt; 218} 219 220/* 221 * Add a proxy route (as needed) for the specified destination. 222 */ 223void 224ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 225 const uint8_t dest[IEEE80211_ADDR_LEN]) 226{ 227 struct ieee80211_mesh_state *ms = vap->iv_mesh; 228 struct ieee80211_mesh_route *rt; 229 230 MESH_RT_LOCK(ms); 231 rt = mesh_rt_find_locked(ms, dest); 232 if (rt == NULL) { 233 rt = mesh_rt_add_locked(ms, dest); 234 if (rt == NULL) { 235 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 236 "%s", "unable to add proxy entry"); 237 vap->iv_stats.is_mesh_rtaddfailed++; 238 } else { 239 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 240 "%s", "add proxy entry"); 241 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 242 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 243 | IEEE80211_MESHRT_FLAGS_PROXY; 244 } 245 /* XXX assert PROXY? */ 246 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 247 struct ieee80211com *ic = vap->iv_ic; 248 /* 249 * Fix existing entry created by received frames from 250 * stations that have some memory of dest. We also 251 * flush any frames held on the staging queue; delivering 252 * them is too much trouble right now. 253 */ 254 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 255 "%s", "fix proxy entry"); 256 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 257 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 258 | IEEE80211_MESHRT_FLAGS_PROXY; 259 /* XXX belongs in hwmp */ 260 ieee80211_ageq_drain_node(&ic->ic_stageq, 261 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 262 /* XXX stat? */ 263 } 264 MESH_RT_UNLOCK(ms); 265} 266 267static __inline void 268mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 269{ 270 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 271 free(rt, M_80211_MESH_RT); 272} 273 274void 275ieee80211_mesh_rt_del(struct ieee80211vap *vap, 276 const uint8_t dest[IEEE80211_ADDR_LEN]) 277{ 278 struct ieee80211_mesh_state *ms = vap->iv_mesh; 279 struct ieee80211_mesh_route *rt, *next; 280 281 MESH_RT_LOCK(ms); 282 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 283 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 284 mesh_rt_del(ms, rt); 285 MESH_RT_UNLOCK(ms); 286 return; 287 } 288 } 289 MESH_RT_UNLOCK(ms); 290} 291 292void 293ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 294{ 295 struct ieee80211_mesh_state *ms = vap->iv_mesh; 296 struct ieee80211_mesh_route *rt, *next; 297 298 if (ms == NULL) 299 return; 300 MESH_RT_LOCK(ms); 301 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 302 mesh_rt_del(ms, rt); 303 MESH_RT_UNLOCK(ms); 304} 305 306void 307ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 308 const uint8_t peer[IEEE80211_ADDR_LEN]) 309{ 310 struct ieee80211_mesh_state *ms = vap->iv_mesh; 311 struct ieee80211_mesh_route *rt, *next; 312 313 MESH_RT_LOCK(ms); 314 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 315 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 316 mesh_rt_del(ms, rt); 317 } 318 MESH_RT_UNLOCK(ms); 319} 320 321/* 322 * Flush expired routing entries, i.e. those in invalid state for 323 * some time. 324 */ 325static void 326mesh_rt_flush_invalid(struct ieee80211vap *vap) 327{ 328 struct ieee80211_mesh_state *ms = vap->iv_mesh; 329 struct ieee80211_mesh_route *rt, *next; 330 331 if (ms == NULL) 332 return; 333 MESH_RT_LOCK(ms); 334 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 335 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 336 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 337 mesh_rt_del(ms, rt); 338 } 339 MESH_RT_UNLOCK(ms); 340} 341 342#define N(a) (sizeof(a) / sizeof(a[0])) 343int 344ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 345{ 346 int i, firstempty = -1; 347 348 for (i = 0; i < N(mesh_proto_paths); i++) { 349 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 350 IEEE80211_MESH_PROTO_DSZ) == 0) 351 return EEXIST; 352 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 353 firstempty = i; 354 } 355 if (firstempty < 0) 356 return ENOSPC; 357 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 358 mesh_proto_paths[firstempty].mpp_active = 1; 359 return 0; 360} 361 362int 363ieee80211_mesh_register_proto_metric(const struct 364 ieee80211_mesh_proto_metric *mpm) 365{ 366 int i, firstempty = -1; 367 368 for (i = 0; i < N(mesh_proto_metrics); i++) { 369 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 370 IEEE80211_MESH_PROTO_DSZ) == 0) 371 return EEXIST; 372 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 373 firstempty = i; 374 } 375 if (firstempty < 0) 376 return ENOSPC; 377 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 378 mesh_proto_metrics[firstempty].mpm_active = 1; 379 return 0; 380} 381 382static int 383mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 384{ 385 struct ieee80211_mesh_state *ms = vap->iv_mesh; 386 int i; 387 388 for (i = 0; i < N(mesh_proto_paths); i++) { 389 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 390 ms->ms_ppath = &mesh_proto_paths[i]; 391 return 0; 392 } 393 } 394 return ENOENT; 395} 396 397static int 398mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 399{ 400 struct ieee80211_mesh_state *ms = vap->iv_mesh; 401 int i; 402 403 for (i = 0; i < N(mesh_proto_metrics); i++) { 404 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 405 ms->ms_pmetric = &mesh_proto_metrics[i]; 406 return 0; 407 } 408 } 409 return ENOENT; 410} 411#undef N 412 413static void 414ieee80211_mesh_init(void) 415{ 416 417 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 418 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 419 420 /* 421 * Setup mesh parameters that depends on the clock frequency. 422 */ 423 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 424 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 425 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 426 427 /* 428 * Register action frame handlers. 429 */ 430 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 431 IEEE80211_ACTION_MESHPEERING_OPEN, 432 mesh_recv_action_meshpeering_open); 433 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 434 IEEE80211_ACTION_MESHPEERING_CONFIRM, 435 mesh_recv_action_meshpeering_confirm); 436 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 437 IEEE80211_ACTION_MESHPEERING_CLOSE, 438 mesh_recv_action_meshpeering_close); 439 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 440 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 441 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 442 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 443 444 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 445 IEEE80211_ACTION_MESHPEERING_OPEN, 446 mesh_send_action_meshpeering_open); 447 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 448 IEEE80211_ACTION_MESHPEERING_CONFIRM, 449 mesh_send_action_meshpeering_confirm); 450 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 451 IEEE80211_ACTION_MESHPEERING_CLOSE, 452 mesh_send_action_meshpeering_close); 453 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 454 IEEE80211_ACTION_MESHLMETRIC_REQ, 455 mesh_send_action_meshlink_request); 456 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 457 IEEE80211_ACTION_MESHLMETRIC_REP, 458 mesh_send_action_meshlink_reply); 459 460 /* 461 * Register Airtime Link Metric. 462 */ 463 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 464 465} 466SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 467 468void 469ieee80211_mesh_attach(struct ieee80211com *ic) 470{ 471 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 472} 473 474void 475ieee80211_mesh_detach(struct ieee80211com *ic) 476{ 477} 478 479static void 480mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 481{ 482 struct ieee80211com *ic = ni->ni_ic; 483 uint16_t args[3]; 484 485 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 486 args[0] = ni->ni_mlpid; 487 args[1] = ni->ni_mllid; 488 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 489 ieee80211_send_action(ni, 490 IEEE80211_ACTION_CAT_MESHPEERING, 491 IEEE80211_ACTION_MESHPEERING_CLOSE, 492 args); 493 } 494 callout_drain(&ni->ni_mltimer); 495 /* XXX belongs in hwmp */ 496 ieee80211_ageq_drain_node(&ic->ic_stageq, 497 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 498} 499 500static void 501mesh_vdetach(struct ieee80211vap *vap) 502{ 503 struct ieee80211_mesh_state *ms = vap->iv_mesh; 504 505 callout_drain(&ms->ms_cleantimer); 506 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 507 NULL); 508 ieee80211_mesh_rt_flush(vap); 509 mtx_destroy(&ms->ms_rt_lock); 510 ms->ms_ppath->mpp_vdetach(vap); 511 free(vap->iv_mesh, M_80211_VAP); 512 vap->iv_mesh = NULL; 513} 514 515static void 516mesh_vattach(struct ieee80211vap *vap) 517{ 518 struct ieee80211_mesh_state *ms; 519 vap->iv_newstate = mesh_newstate; 520 vap->iv_input = mesh_input; 521 vap->iv_opdetach = mesh_vdetach; 522 vap->iv_recv_mgmt = mesh_recv_mgmt; 523 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 524 M_NOWAIT | M_ZERO); 525 if (ms == NULL) { 526 printf("%s: couldn't alloc MBSS state\n", __func__); 527 return; 528 } 529 vap->iv_mesh = ms; 530 ms->ms_seq = 0; 531 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 532 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 533 TAILQ_INIT(&ms->ms_routes); 534 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 535 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 536 mesh_select_proto_metric(vap, "AIRTIME"); 537 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 538 mesh_select_proto_path(vap, "HWMP"); 539 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 540 ms->ms_ppath->mpp_vattach(vap); 541} 542 543/* 544 * IEEE80211_M_MBSS vap state machine handler. 545 */ 546static int 547mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 548{ 549 struct ieee80211_mesh_state *ms = vap->iv_mesh; 550 struct ieee80211com *ic = vap->iv_ic; 551 struct ieee80211_node *ni; 552 enum ieee80211_state ostate; 553 554 IEEE80211_LOCK_ASSERT(ic); 555 556 ostate = vap->iv_state; 557 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 558 __func__, ieee80211_state_name[ostate], 559 ieee80211_state_name[nstate], arg); 560 vap->iv_state = nstate; /* state transition */ 561 if (ostate != IEEE80211_S_SCAN) 562 ieee80211_cancel_scan(vap); /* background scan */ 563 ni = vap->iv_bss; /* NB: no reference held */ 564 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 565 callout_drain(&ms->ms_cleantimer); 566 switch (nstate) { 567 case IEEE80211_S_INIT: 568 switch (ostate) { 569 case IEEE80211_S_SCAN: 570 ieee80211_cancel_scan(vap); 571 break; 572 case IEEE80211_S_CAC: 573 ieee80211_dfs_cac_stop(vap); 574 break; 575 case IEEE80211_S_RUN: 576 ieee80211_iterate_nodes(&ic->ic_sta, 577 mesh_vdetach_peers, NULL); 578 break; 579 default: 580 break; 581 } 582 if (ostate != IEEE80211_S_INIT) { 583 /* NB: optimize INIT -> INIT case */ 584 ieee80211_reset_bss(vap); 585 ieee80211_mesh_rt_flush(vap); 586 } 587 break; 588 case IEEE80211_S_SCAN: 589 switch (ostate) { 590 case IEEE80211_S_INIT: 591 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 592 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 593 ms->ms_idlen != 0) { 594 /* 595 * Already have a channel and a mesh ID; bypass 596 * the scan and startup immediately. 597 */ 598 ieee80211_create_ibss(vap, vap->iv_des_chan); 599 break; 600 } 601 /* 602 * Initiate a scan. We can come here as a result 603 * of an IEEE80211_IOC_SCAN_REQ too in which case 604 * the vap will be marked with IEEE80211_FEXT_SCANREQ 605 * and the scan request parameters will be present 606 * in iv_scanreq. Otherwise we do the default. 607 */ 608 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 609 ieee80211_check_scan(vap, 610 vap->iv_scanreq_flags, 611 vap->iv_scanreq_duration, 612 vap->iv_scanreq_mindwell, 613 vap->iv_scanreq_maxdwell, 614 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 615 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 616 } else 617 ieee80211_check_scan_current(vap); 618 break; 619 default: 620 break; 621 } 622 break; 623 case IEEE80211_S_CAC: 624 /* 625 * Start CAC on a DFS channel. We come here when starting 626 * a bss on a DFS channel (see ieee80211_create_ibss). 627 */ 628 ieee80211_dfs_cac_start(vap); 629 break; 630 case IEEE80211_S_RUN: 631 switch (ostate) { 632 case IEEE80211_S_INIT: 633 /* 634 * Already have a channel; bypass the 635 * scan and startup immediately. 636 * Note that ieee80211_create_ibss will call 637 * back to do a RUN->RUN state change. 638 */ 639 ieee80211_create_ibss(vap, 640 ieee80211_ht_adjust_channel(ic, 641 ic->ic_curchan, vap->iv_flags_ht)); 642 /* NB: iv_bss is changed on return */ 643 break; 644 case IEEE80211_S_CAC: 645 /* 646 * NB: This is the normal state change when CAC 647 * expires and no radar was detected; no need to 648 * clear the CAC timer as it's already expired. 649 */ 650 /* fall thru... */ 651 case IEEE80211_S_CSA: 652#if 0 653 /* 654 * Shorten inactivity timer of associated stations 655 * to weed out sta's that don't follow a CSA. 656 */ 657 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 658#endif 659 /* 660 * Update bss node channel to reflect where 661 * we landed after CSA. 662 */ 663 ieee80211_node_set_chan(vap->iv_bss, 664 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 665 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 666 /* XXX bypass debug msgs */ 667 break; 668 case IEEE80211_S_SCAN: 669 case IEEE80211_S_RUN: 670#ifdef IEEE80211_DEBUG 671 if (ieee80211_msg_debug(vap)) { 672 struct ieee80211_node *ni = vap->iv_bss; 673 ieee80211_note(vap, 674 "synchronized with %s meshid ", 675 ether_sprintf(ni->ni_meshid)); 676 ieee80211_print_essid(ni->ni_meshid, 677 ni->ni_meshidlen); 678 /* XXX MCS/HT */ 679 printf(" channel %d\n", 680 ieee80211_chan2ieee(ic, ic->ic_curchan)); 681 } 682#endif 683 break; 684 default: 685 break; 686 } 687 ieee80211_node_authorize(vap->iv_bss); 688 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 689 mesh_rt_cleanup_cb, vap); 690 break; 691 default: 692 break; 693 } 694 /* NB: ostate not nstate */ 695 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 696 return 0; 697} 698 699static void 700mesh_rt_cleanup_cb(void *arg) 701{ 702 struct ieee80211vap *vap = arg; 703 struct ieee80211_mesh_state *ms = vap->iv_mesh; 704 705 mesh_rt_flush_invalid(vap); 706 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 707 mesh_rt_cleanup_cb, vap); 708} 709 710 711/* 712 * Helper function to note the Mesh Peer Link FSM change. 713 */ 714static void 715mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 716{ 717 struct ieee80211vap *vap = ni->ni_vap; 718 struct ieee80211_mesh_state *ms = vap->iv_mesh; 719#ifdef IEEE80211_DEBUG 720 static const char *meshlinkstates[] = { 721 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 722 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 723 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 724 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 725 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 726 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 727 }; 728#endif 729 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 730 ni, "peer link: %s -> %s", 731 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 732 733 /* track neighbor count */ 734 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 735 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 736 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 737 ms->ms_neighbors++; 738 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 739 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 740 state != IEEE80211_NODE_MESH_ESTABLISHED) { 741 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 742 ms->ms_neighbors--; 743 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 744 } 745 ni->ni_mlstate = state; 746 switch (state) { 747 case IEEE80211_NODE_MESH_HOLDING: 748 ms->ms_ppath->mpp_peerdown(ni); 749 break; 750 case IEEE80211_NODE_MESH_ESTABLISHED: 751 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 752 break; 753 default: 754 break; 755 } 756} 757 758/* 759 * Helper function to generate a unique local ID required for mesh 760 * peer establishment. 761 */ 762static void 763mesh_checkid(void *arg, struct ieee80211_node *ni) 764{ 765 uint16_t *r = arg; 766 767 if (*r == ni->ni_mllid) 768 *(uint16_t *)arg = 0; 769} 770 771static uint32_t 772mesh_generateid(struct ieee80211vap *vap) 773{ 774 int maxiter = 4; 775 uint16_t r; 776 777 do { 778 get_random_bytes(&r, 2); 779 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 780 maxiter--; 781 } while (r == 0 && maxiter > 0); 782 return r; 783} 784 785/* 786 * Verifies if we already received this packet by checking its 787 * sequence number. 788 * Returns 0 if the frame is to be accepted, 1 otherwise. 789 */ 790static int 791mesh_checkpseq(struct ieee80211vap *vap, 792 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 793{ 794 struct ieee80211_mesh_route *rt; 795 796 rt = ieee80211_mesh_rt_find(vap, source); 797 if (rt == NULL) { 798 rt = ieee80211_mesh_rt_add(vap, source); 799 if (rt == NULL) { 800 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 801 "%s", "add mcast route failed"); 802 vap->iv_stats.is_mesh_rtaddfailed++; 803 return 1; 804 } 805 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 806 "add mcast route, mesh seqno %d", seq); 807 rt->rt_lastmseq = seq; 808 return 0; 809 } 810 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 811 return 1; 812 } else { 813 rt->rt_lastmseq = seq; 814 return 0; 815 } 816} 817 818/* 819 * Iterate the routing table and locate the next hop. 820 */ 821static struct ieee80211_node * 822mesh_find_txnode(struct ieee80211vap *vap, 823 const uint8_t dest[IEEE80211_ADDR_LEN]) 824{ 825 struct ieee80211_mesh_route *rt; 826 827 rt = ieee80211_mesh_rt_find(vap, dest); 828 if (rt == NULL) 829 return NULL; 830 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 831 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 832 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 833 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 834 /* XXX stat */ 835 return NULL; 836 } 837 return ieee80211_find_txnode(vap, rt->rt_nexthop); 838} 839 840/* 841 * Forward the specified frame. 842 * Decrement the TTL and set TA to our MAC address. 843 */ 844static void 845mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 846 const struct ieee80211_meshcntl *mc) 847{ 848 struct ieee80211com *ic = vap->iv_ic; 849 struct ieee80211_mesh_state *ms = vap->iv_mesh; 850 struct ifnet *ifp = vap->iv_ifp; 851 struct ifnet *parent = ic->ic_ifp; 852 const struct ieee80211_frame *wh = 853 mtod(m, const struct ieee80211_frame *); 854 struct mbuf *mcopy; 855 struct ieee80211_meshcntl *mccopy; 856 struct ieee80211_frame *whcopy; 857 struct ieee80211_node *ni; 858 int err; 859 860 if (mc->mc_ttl == 0) { 861 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 862 "%s", "frame not fwd'd, ttl 0"); 863 vap->iv_stats.is_mesh_fwd_ttl++; 864 return; 865 } 866 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 867 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 868 "%s", "frame not fwd'd, fwding disabled"); 869 vap->iv_stats.is_mesh_fwd_disabled++; 870 return; 871 } 872 mcopy = m_dup(m, M_DONTWAIT); 873 if (mcopy == NULL) { 874 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 875 "%s", "frame not fwd'd, cannot dup"); 876 vap->iv_stats.is_mesh_fwd_nobuf++; 877 ifp->if_oerrors++; 878 return; 879 } 880 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 881 sizeof(struct ieee80211_meshcntl)); 882 if (mcopy == NULL) { 883 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 884 "%s", "frame not fwd'd, too short"); 885 vap->iv_stats.is_mesh_fwd_tooshort++; 886 ifp->if_oerrors++; 887 m_freem(mcopy); 888 return; 889 } 890 whcopy = mtod(mcopy, struct ieee80211_frame *); 891 mccopy = (struct ieee80211_meshcntl *) 892 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 893 /* XXX clear other bits? */ 894 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 895 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 896 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 897 ni = ieee80211_ref_node(vap->iv_bss); 898 mcopy->m_flags |= M_MCAST; 899 } else { 900 ni = mesh_find_txnode(vap, whcopy->i_addr3); 901 if (ni == NULL) { 902 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 903 "%s", "frame not fwd'd, no path"); 904 vap->iv_stats.is_mesh_fwd_nopath++; 905 m_freem(mcopy); 906 return; 907 } 908 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 909 } 910 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 911 mccopy->mc_ttl--; 912 913 /* XXX calculate priority so drivers can find the tx queue */ 914 M_WME_SETAC(mcopy, WME_AC_BE); 915 916 /* XXX do we know m_nextpkt is NULL? */ 917 mcopy->m_pkthdr.rcvif = (void *) ni; 918 err = parent->if_transmit(parent, mcopy); 919 if (err != 0) { 920 /* NB: IFQ_HANDOFF reclaims mbuf */ 921 ieee80211_free_node(ni); 922 } else { 923 ifp->if_opackets++; 924 } 925} 926 927static struct mbuf * 928mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 929{ 930#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 931 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 932 sizeof(struct ieee80211_meshcntl_ae11)]; 933 const struct ieee80211_qosframe_addr4 *wh; 934 const struct ieee80211_meshcntl_ae10 *mc; 935 struct ether_header *eh; 936 struct llc *llc; 937 int ae; 938 939 if (m->m_len < hdrlen + sizeof(*llc) && 940 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 941 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 942 "discard data frame: %s", "m_pullup failed"); 943 vap->iv_stats.is_rx_tooshort++; 944 return NULL; 945 } 946 memcpy(b, mtod(m, caddr_t), hdrlen); 947 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 948 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 949 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 950 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 951 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 952 953 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 954 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 955 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 956 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 957 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 958 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 959 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 960 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 961 llc = NULL; 962 } else { 963 m_adj(m, hdrlen - sizeof(*eh)); 964 } 965 eh = mtod(m, struct ether_header *); 966 ae = mc->mc_flags & 3; 967 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 968 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 969 if (ae == 0) { 970 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 971 } else if (ae == 1) { 972 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 973 } else { 974 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 975 (const struct ieee80211_frame *)wh, NULL, 976 "bad AE %d", ae); 977 vap->iv_stats.is_mesh_badae++; 978 m_freem(m); 979 return NULL; 980 } 981 } else { 982 if (ae == 0) { 983 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 984 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 985 } else if (ae == 2) { 986 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 987 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 988 } else { 989 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 990 (const struct ieee80211_frame *)wh, NULL, 991 "bad AE %d", ae); 992 vap->iv_stats.is_mesh_badae++; 993 m_freem(m); 994 return NULL; 995 } 996 } 997#ifdef ALIGNED_POINTER 998 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 999 m = ieee80211_realign(vap, m, sizeof(*eh)); 1000 if (m == NULL) 1001 return NULL; 1002 } 1003#endif /* ALIGNED_POINTER */ 1004 if (llc != NULL) { 1005 eh = mtod(m, struct ether_header *); 1006 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 1007 } 1008 return m; 1009#undef WDIR 1010} 1011 1012/* 1013 * Return non-zero if the unicast mesh data frame should be processed 1014 * locally. Frames that are not proxy'd have our address, otherwise 1015 * we need to consult the routing table to look for a proxy entry. 1016 */ 1017static __inline int 1018mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 1019 const struct ieee80211_meshcntl *mc) 1020{ 1021 int ae = mc->mc_flags & 3; 1022 1023 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1024 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1025 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1026 if (ae == 2) { /* ucast w/ proxy */ 1027 const struct ieee80211_meshcntl_ae10 *mc10 = 1028 (const struct ieee80211_meshcntl_ae10 *) mc; 1029 struct ieee80211_mesh_route *rt = 1030 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1031 /* check for proxy route to ourself */ 1032 return (rt != NULL && 1033 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1034 } else /* ucast w/o proxy */ 1035 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1036} 1037 1038static int 1039mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1040{ 1041#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1042#define HAS_SEQ(type) ((type & 0x4) == 0) 1043 struct ieee80211vap *vap = ni->ni_vap; 1044 struct ieee80211com *ic = ni->ni_ic; 1045 struct ifnet *ifp = vap->iv_ifp; 1046 struct ieee80211_frame *wh; 1047 const struct ieee80211_meshcntl *mc; 1048 int hdrspace, meshdrlen, need_tap; 1049 uint8_t dir, type, subtype, qos; 1050 uint32_t seq; 1051 uint8_t *addr; 1052 ieee80211_seq rxseq; 1053 1054 KASSERT(ni != NULL, ("null node")); 1055 ni->ni_inact = ni->ni_inact_reload; 1056 1057 need_tap = 1; /* mbuf need to be tapped. */ 1058 type = -1; /* undefined */ 1059 1060 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1061 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1062 ni->ni_macaddr, NULL, 1063 "too short (1): len %u", m->m_pkthdr.len); 1064 vap->iv_stats.is_rx_tooshort++; 1065 goto out; 1066 } 1067 /* 1068 * Bit of a cheat here, we use a pointer for a 3-address 1069 * frame format but don't reference fields past outside 1070 * ieee80211_frame_min w/o first validating the data is 1071 * present. 1072 */ 1073 wh = mtod(m, struct ieee80211_frame *); 1074 1075 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1076 IEEE80211_FC0_VERSION_0) { 1077 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1078 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1079 vap->iv_stats.is_rx_badversion++; 1080 goto err; 1081 } 1082 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1083 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1084 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1085 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1086 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1087 ni->ni_noise = nf; 1088 if (HAS_SEQ(type)) { 1089 uint8_t tid = ieee80211_gettid(wh); 1090 1091 if (IEEE80211_QOS_HAS_SEQ(wh) && 1092 TID_TO_WME_AC(tid) >= WME_AC_VI) 1093 ic->ic_wme.wme_hipri_traffic++; 1094 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1095 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1096 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1097 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1098 /* duplicate, discard */ 1099 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1100 wh->i_addr1, "duplicate", 1101 "seqno <%u,%u> fragno <%u,%u> tid %u", 1102 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1103 ni->ni_rxseqs[tid] >> 1104 IEEE80211_SEQ_SEQ_SHIFT, 1105 rxseq & IEEE80211_SEQ_FRAG_MASK, 1106 ni->ni_rxseqs[tid] & 1107 IEEE80211_SEQ_FRAG_MASK, 1108 tid); 1109 vap->iv_stats.is_rx_dup++; 1110 IEEE80211_NODE_STAT(ni, rx_dup); 1111 goto out; 1112 } 1113 ni->ni_rxseqs[tid] = rxseq; 1114 } 1115 } 1116#ifdef IEEE80211_DEBUG 1117 /* 1118 * It's easier, but too expensive, to simulate different mesh 1119 * topologies by consulting the ACL policy very early, so do this 1120 * only under DEBUG. 1121 * 1122 * NB: this check is also done upon peering link initiation. 1123 */ 1124 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1125 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1126 wh, NULL, "%s", "disallowed by ACL"); 1127 vap->iv_stats.is_rx_acl++; 1128 goto out; 1129 } 1130#endif 1131 switch (type) { 1132 case IEEE80211_FC0_TYPE_DATA: 1133 if (ni == vap->iv_bss) 1134 goto out; 1135 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1136 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1137 ni->ni_macaddr, NULL, 1138 "peer link not yet established (%d)", 1139 ni->ni_mlstate); 1140 vap->iv_stats.is_mesh_nolink++; 1141 goto out; 1142 } 1143 if (dir != IEEE80211_FC1_DIR_FROMDS && 1144 dir != IEEE80211_FC1_DIR_DSTODS) { 1145 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1146 wh, "data", "incorrect dir 0x%x", dir); 1147 vap->iv_stats.is_rx_wrongdir++; 1148 goto err; 1149 } 1150 /* pull up enough to get to the mesh control */ 1151 hdrspace = ieee80211_hdrspace(ic, wh); 1152 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1153 (m = m_pullup(m, hdrspace + 1154 sizeof(struct ieee80211_meshcntl))) == NULL) { 1155 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1156 ni->ni_macaddr, NULL, 1157 "data too short: expecting %u", hdrspace); 1158 vap->iv_stats.is_rx_tooshort++; 1159 goto out; /* XXX */ 1160 } 1161 /* 1162 * Now calculate the full extent of the headers. Note 1163 * mesh_decap will pull up anything we didn't get 1164 * above when it strips the 802.11 headers. 1165 */ 1166 mc = (const struct ieee80211_meshcntl *) 1167 (mtod(m, const uint8_t *) + hdrspace); 1168 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1169 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1170 hdrspace += meshdrlen; 1171 seq = LE_READ_4(mc->mc_seq); 1172 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1173 addr = wh->i_addr3; 1174 else 1175 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1176 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1177 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1178 addr, "data", "%s", "not to me"); 1179 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1180 goto out; 1181 } 1182 if (mesh_checkpseq(vap, addr, seq) != 0) { 1183 vap->iv_stats.is_rx_dup++; 1184 goto out; 1185 } 1186 1187 /* 1188 * Potentially forward packet. See table s36 (p140) 1189 * for the rules. XXX tap fwd'd packets not for us? 1190 */ 1191 if (dir == IEEE80211_FC1_DIR_FROMDS || 1192 !mesh_isucastforme(vap, wh, mc)) { 1193 mesh_forward(vap, m, mc); 1194 if (dir == IEEE80211_FC1_DIR_DSTODS) 1195 goto out; 1196 /* NB: fall thru to deliver mcast frames locally */ 1197 } 1198 1199 /* 1200 * Save QoS bits for use below--before we strip the header. 1201 */ 1202 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1203 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1204 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1205 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1206 } else 1207 qos = 0; 1208 /* 1209 * Next up, any fragmentation. 1210 */ 1211 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1212 m = ieee80211_defrag(ni, m, hdrspace); 1213 if (m == NULL) { 1214 /* Fragment dropped or frame not complete yet */ 1215 goto out; 1216 } 1217 } 1218 wh = NULL; /* no longer valid, catch any uses */ 1219 1220 if (ieee80211_radiotap_active_vap(vap)) 1221 ieee80211_radiotap_rx(vap, m); 1222 need_tap = 0; 1223 1224 /* 1225 * Finally, strip the 802.11 header. 1226 */ 1227 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1228 if (m == NULL) { 1229 /* XXX mask bit to check for both */ 1230 /* don't count Null data frames as errors */ 1231 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1232 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1233 goto out; 1234 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1235 ni->ni_macaddr, "data", "%s", "decap error"); 1236 vap->iv_stats.is_rx_decap++; 1237 IEEE80211_NODE_STAT(ni, rx_decap); 1238 goto err; 1239 } 1240 if (qos & IEEE80211_QOS_AMSDU) { 1241 m = ieee80211_decap_amsdu(ni, m); 1242 if (m == NULL) 1243 return IEEE80211_FC0_TYPE_DATA; 1244 } 1245 ieee80211_deliver_data(vap, ni, m); 1246 return type; 1247 case IEEE80211_FC0_TYPE_MGT: 1248 vap->iv_stats.is_rx_mgmt++; 1249 IEEE80211_NODE_STAT(ni, rx_mgmt); 1250 if (dir != IEEE80211_FC1_DIR_NODS) { 1251 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1252 wh, "mgt", "incorrect dir 0x%x", dir); 1253 vap->iv_stats.is_rx_wrongdir++; 1254 goto err; 1255 } 1256 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1257 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1258 ni->ni_macaddr, "mgt", "too short: len %u", 1259 m->m_pkthdr.len); 1260 vap->iv_stats.is_rx_tooshort++; 1261 goto out; 1262 } 1263#ifdef IEEE80211_DEBUG 1264 if ((ieee80211_msg_debug(vap) && 1265 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1266 ieee80211_msg_dumppkts(vap)) { 1267 if_printf(ifp, "received %s from %s rssi %d\n", 1268 ieee80211_mgt_subtype_name[subtype >> 1269 IEEE80211_FC0_SUBTYPE_SHIFT], 1270 ether_sprintf(wh->i_addr2), rssi); 1271 } 1272#endif 1273 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1274 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1275 wh, NULL, "%s", "WEP set but not permitted"); 1276 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1277 goto out; 1278 } 1279 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1280 goto out; 1281 case IEEE80211_FC0_TYPE_CTL: 1282 vap->iv_stats.is_rx_ctl++; 1283 IEEE80211_NODE_STAT(ni, rx_ctrl); 1284 goto out; 1285 default: 1286 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1287 wh, "bad", "frame type 0x%x", type); 1288 /* should not come here */ 1289 break; 1290 } 1291err: 1292 ifp->if_ierrors++; 1293out: 1294 if (m != NULL) { 1295 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1296 ieee80211_radiotap_rx(vap, m); 1297 m_freem(m); 1298 } 1299 return type; 1300} 1301 1302static void 1303mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1304 int rssi, int nf) 1305{ 1306 struct ieee80211vap *vap = ni->ni_vap; 1307 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1308 struct ieee80211com *ic = ni->ni_ic; 1309 struct ieee80211_frame *wh; 1310 uint8_t *frm, *efrm; 1311 1312 wh = mtod(m0, struct ieee80211_frame *); 1313 frm = (uint8_t *)&wh[1]; 1314 efrm = mtod(m0, uint8_t *) + m0->m_len; 1315 switch (subtype) { 1316 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1317 case IEEE80211_FC0_SUBTYPE_BEACON: 1318 { 1319 struct ieee80211_scanparams scan; 1320 /* 1321 * We process beacon/probe response 1322 * frames to discover neighbors. 1323 */ 1324 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1325 return; 1326 /* 1327 * Count frame now that we know it's to be processed. 1328 */ 1329 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1330 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1331 IEEE80211_NODE_STAT(ni, rx_beacons); 1332 } else 1333 IEEE80211_NODE_STAT(ni, rx_proberesp); 1334 /* 1335 * If scanning, just pass information to the scan module. 1336 */ 1337 if (ic->ic_flags & IEEE80211_F_SCAN) { 1338 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1339 /* 1340 * Actively scanning a channel marked passive; 1341 * send a probe request now that we know there 1342 * is 802.11 traffic present. 1343 * 1344 * XXX check if the beacon we recv'd gives 1345 * us what we need and suppress the probe req 1346 */ 1347 ieee80211_probe_curchan(vap, 1); 1348 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1349 } 1350 ieee80211_add_scan(vap, &scan, wh, 1351 subtype, rssi, nf); 1352 return; 1353 } 1354 1355 /* The rest of this code assumes we are running */ 1356 if (vap->iv_state != IEEE80211_S_RUN) 1357 return; 1358 /* 1359 * Ignore non-mesh STAs. 1360 */ 1361 if ((scan.capinfo & 1362 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1363 scan.meshid == NULL || scan.meshconf == NULL) { 1364 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1365 wh, "beacon", "%s", "not a mesh sta"); 1366 vap->iv_stats.is_mesh_wrongmesh++; 1367 return; 1368 } 1369 /* 1370 * Ignore STAs for other mesh networks. 1371 */ 1372 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1373 mesh_verify_meshconf(vap, scan.meshconf)) { 1374 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1375 wh, "beacon", "%s", "not for our mesh"); 1376 vap->iv_stats.is_mesh_wrongmesh++; 1377 return; 1378 } 1379 /* 1380 * Peer only based on the current ACL policy. 1381 */ 1382 if (vap->iv_acl != NULL && 1383 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1384 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1385 wh, NULL, "%s", "disallowed by ACL"); 1386 vap->iv_stats.is_rx_acl++; 1387 return; 1388 } 1389 /* 1390 * Do neighbor discovery. 1391 */ 1392 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1393 /* 1394 * Create a new entry in the neighbor table. 1395 */ 1396 ni = ieee80211_add_neighbor(vap, wh, &scan); 1397 } 1398 /* 1399 * Automatically peer with discovered nodes if possible. 1400 * XXX backoff on repeated failure 1401 */ 1402 if (ni != vap->iv_bss && 1403 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1404 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1405 uint16_t args[1]; 1406 1407 ni->ni_mlpid = mesh_generateid(vap); 1408 if (ni->ni_mlpid == 0) 1409 return; 1410 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1411 args[0] = ni->ni_mlpid; 1412 ieee80211_send_action(ni, 1413 IEEE80211_ACTION_CAT_MESHPEERING, 1414 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1415 ni->ni_mlrcnt = 0; 1416 mesh_peer_timeout_setup(ni); 1417 } 1418 break; 1419 } 1420 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1421 { 1422 uint8_t *ssid, *meshid, *rates, *xrates; 1423 uint8_t *sfrm; 1424 1425 if (vap->iv_state != IEEE80211_S_RUN) { 1426 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1427 wh, NULL, "wrong state %s", 1428 ieee80211_state_name[vap->iv_state]); 1429 vap->iv_stats.is_rx_mgtdiscard++; 1430 return; 1431 } 1432 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1433 /* frame must be directed */ 1434 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1435 wh, NULL, "%s", "not unicast"); 1436 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1437 return; 1438 } 1439 /* 1440 * prreq frame format 1441 * [tlv] ssid 1442 * [tlv] supported rates 1443 * [tlv] extended supported rates 1444 * [tlv] mesh id 1445 */ 1446 ssid = meshid = rates = xrates = NULL; 1447 sfrm = frm; 1448 while (efrm - frm > 1) { 1449 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1450 switch (*frm) { 1451 case IEEE80211_ELEMID_SSID: 1452 ssid = frm; 1453 break; 1454 case IEEE80211_ELEMID_RATES: 1455 rates = frm; 1456 break; 1457 case IEEE80211_ELEMID_XRATES: 1458 xrates = frm; 1459 break; 1460 case IEEE80211_ELEMID_MESHID: 1461 meshid = frm; 1462 break; 1463 } 1464 frm += frm[2] + 2; 1465 } 1466 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1467 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1468 if (xrates != NULL) 1469 IEEE80211_VERIFY_ELEMENT(xrates, 1470 IEEE80211_RATE_MAXSIZE - rates[1], return); 1471 if (meshid != NULL) 1472 IEEE80211_VERIFY_ELEMENT(meshid, 1473 IEEE80211_MESHID_LEN, return); 1474 /* NB: meshid, not ssid */ 1475 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1476 1477 /* XXX find a better class or define it's own */ 1478 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1479 "%s", "recv probe req"); 1480 /* 1481 * Some legacy 11b clients cannot hack a complete 1482 * probe response frame. When the request includes 1483 * only a bare-bones rate set, communicate this to 1484 * the transmit side. 1485 */ 1486 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1487 break; 1488 } 1489 case IEEE80211_FC0_SUBTYPE_ACTION: 1490 if (vap->iv_state != IEEE80211_S_RUN) { 1491 vap->iv_stats.is_rx_mgtdiscard++; 1492 break; 1493 } 1494 /* 1495 * We received an action for an unknown neighbor. 1496 * XXX: wait for it to beacon or create ieee80211_node? 1497 */ 1498 if (ni == vap->iv_bss) { 1499 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1500 wh, NULL, "%s", "unknown node"); 1501 vap->iv_stats.is_rx_mgtdiscard++; 1502 break; 1503 } 1504 /* 1505 * Discard if not for us. 1506 */ 1507 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1508 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1509 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1510 wh, NULL, "%s", "not for me"); 1511 vap->iv_stats.is_rx_mgtdiscard++; 1512 break; 1513 } 1514 /* XXX parse_action is a bit useless now */ 1515 if (ieee80211_parse_action(ni, m0) == 0) 1516 ic->ic_recv_action(ni, wh, frm, efrm); 1517 break; 1518 case IEEE80211_FC0_SUBTYPE_AUTH: 1519 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1520 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1521 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1522 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1523 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1524 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1525 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1526 wh, NULL, "%s", "not handled"); 1527 vap->iv_stats.is_rx_mgtdiscard++; 1528 return; 1529 default: 1530 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1531 wh, "mgt", "subtype 0x%x not handled", subtype); 1532 vap->iv_stats.is_rx_badsubtype++; 1533 break; 1534 } 1535} 1536 1537/* 1538 * Parse meshpeering action ie's for open+confirm frames; the 1539 * important bits are returned in the supplied structure. 1540 */ 1541static const struct ieee80211_meshpeer_ie * 1542mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1543 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1544 const uint8_t *frm, const uint8_t *efrm, 1545 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1546{ 1547 struct ieee80211vap *vap = ni->ni_vap; 1548 const struct ieee80211_meshpeer_ie *mpie; 1549 const uint8_t *meshid, *meshconf, *meshpeer; 1550 1551 meshid = meshconf = meshpeer = NULL; 1552 while (efrm - frm > 1) { 1553 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1554 switch (*frm) { 1555 case IEEE80211_ELEMID_MESHID: 1556 meshid = frm; 1557 break; 1558 case IEEE80211_ELEMID_MESHCONF: 1559 meshconf = frm; 1560 break; 1561 case IEEE80211_ELEMID_MESHPEER: 1562 meshpeer = frm; 1563 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1564 memset(mp, 0, sizeof(*mp)); 1565 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1566 /* NB: peer link ID is optional on these frames */ 1567 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1568 mpie->peer_len == 8) { 1569 mp->peer_linkid = 0; 1570 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1571 } else { 1572 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1573 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1574 } 1575 break; 1576 } 1577 frm += frm[1] + 2; 1578 } 1579 1580 /* 1581 * Verify the contents of the frame. Action frames with 1582 * close subtype don't have a Mesh Configuration IE. 1583 * If if fails validation, close the peer link. 1584 */ 1585 KASSERT(meshpeer != NULL && 1586 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1587 ("parsing close action")); 1588 1589 if (mesh_verify_meshid(vap, meshid) || 1590 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1591 mesh_verify_meshconf(vap, meshconf)) { 1592 uint16_t args[3]; 1593 1594 IEEE80211_DISCARD(vap, 1595 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1596 wh, NULL, "%s", "not for our mesh"); 1597 vap->iv_stats.is_rx_mgtdiscard++; 1598 switch (ni->ni_mlstate) { 1599 case IEEE80211_NODE_MESH_IDLE: 1600 case IEEE80211_NODE_MESH_ESTABLISHED: 1601 case IEEE80211_NODE_MESH_HOLDING: 1602 /* ignore */ 1603 break; 1604 case IEEE80211_NODE_MESH_OPENSNT: 1605 case IEEE80211_NODE_MESH_OPENRCV: 1606 case IEEE80211_NODE_MESH_CONFIRMRCV: 1607 args[0] = ni->ni_mlpid; 1608 args[1] = ni->ni_mllid; 1609 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1610 ieee80211_send_action(ni, 1611 IEEE80211_ACTION_CAT_MESHPEERING, 1612 IEEE80211_ACTION_MESHPEERING_CLOSE, 1613 args); 1614 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1615 mesh_peer_timeout_setup(ni); 1616 break; 1617 } 1618 return NULL; 1619 } 1620 return (const struct ieee80211_meshpeer_ie *) mp; 1621} 1622 1623static int 1624mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1625 const struct ieee80211_frame *wh, 1626 const uint8_t *frm, const uint8_t *efrm) 1627{ 1628 struct ieee80211vap *vap = ni->ni_vap; 1629 struct ieee80211_meshpeer_ie ie; 1630 const struct ieee80211_meshpeer_ie *meshpeer; 1631 uint16_t args[3]; 1632 1633 /* +2+2 for action + code + capabilites */ 1634 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1635 IEEE80211_ACTION_MESHPEERING_OPEN); 1636 if (meshpeer == NULL) { 1637 return 0; 1638 } 1639 1640 /* XXX move up */ 1641 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1642 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1643 1644 switch (ni->ni_mlstate) { 1645 case IEEE80211_NODE_MESH_IDLE: 1646 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1647 ni->ni_mllid = meshpeer->peer_llinkid; 1648 ni->ni_mlpid = mesh_generateid(vap); 1649 if (ni->ni_mlpid == 0) 1650 return 0; /* XXX */ 1651 args[0] = ni->ni_mlpid; 1652 /* Announce we're open too... */ 1653 ieee80211_send_action(ni, 1654 IEEE80211_ACTION_CAT_MESHPEERING, 1655 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1656 /* ...and confirm the link. */ 1657 args[0] = ni->ni_mlpid; 1658 args[1] = ni->ni_mllid; 1659 ieee80211_send_action(ni, 1660 IEEE80211_ACTION_CAT_MESHPEERING, 1661 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1662 args); 1663 mesh_peer_timeout_setup(ni); 1664 break; 1665 case IEEE80211_NODE_MESH_OPENRCV: 1666 /* Wrong Link ID */ 1667 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1668 args[0] = ni->ni_mllid; 1669 args[1] = ni->ni_mlpid; 1670 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1671 ieee80211_send_action(ni, 1672 IEEE80211_ACTION_CAT_MESHPEERING, 1673 IEEE80211_ACTION_MESHPEERING_CLOSE, 1674 args); 1675 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1676 mesh_peer_timeout_setup(ni); 1677 break; 1678 } 1679 /* Duplicate open, confirm again. */ 1680 args[0] = ni->ni_mlpid; 1681 args[1] = ni->ni_mllid; 1682 ieee80211_send_action(ni, 1683 IEEE80211_ACTION_CAT_MESHPEERING, 1684 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1685 args); 1686 break; 1687 case IEEE80211_NODE_MESH_OPENSNT: 1688 ni->ni_mllid = meshpeer->peer_llinkid; 1689 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1690 args[0] = ni->ni_mlpid; 1691 args[1] = ni->ni_mllid; 1692 ieee80211_send_action(ni, 1693 IEEE80211_ACTION_CAT_MESHPEERING, 1694 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1695 args); 1696 /* NB: don't setup/clear any timeout */ 1697 break; 1698 case IEEE80211_NODE_MESH_CONFIRMRCV: 1699 if (ni->ni_mlpid != meshpeer->peer_linkid || 1700 ni->ni_mllid != meshpeer->peer_llinkid) { 1701 args[0] = ni->ni_mlpid; 1702 args[1] = ni->ni_mllid; 1703 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1704 ieee80211_send_action(ni, 1705 IEEE80211_ACTION_CAT_MESHPEERING, 1706 IEEE80211_ACTION_MESHPEERING_CLOSE, 1707 args); 1708 mesh_linkchange(ni, 1709 IEEE80211_NODE_MESH_HOLDING); 1710 mesh_peer_timeout_setup(ni); 1711 break; 1712 } 1713 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1714 ni->ni_mllid = meshpeer->peer_llinkid; 1715 args[0] = ni->ni_mlpid; 1716 args[1] = ni->ni_mllid; 1717 ieee80211_send_action(ni, 1718 IEEE80211_ACTION_CAT_MESHPEERING, 1719 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1720 args); 1721 mesh_peer_timeout_stop(ni); 1722 break; 1723 case IEEE80211_NODE_MESH_ESTABLISHED: 1724 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1725 args[0] = ni->ni_mllid; 1726 args[1] = ni->ni_mlpid; 1727 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1728 ieee80211_send_action(ni, 1729 IEEE80211_ACTION_CAT_MESHPEERING, 1730 IEEE80211_ACTION_MESHPEERING_CLOSE, 1731 args); 1732 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1733 mesh_peer_timeout_setup(ni); 1734 break; 1735 } 1736 args[0] = ni->ni_mlpid; 1737 args[1] = ni->ni_mllid; 1738 ieee80211_send_action(ni, 1739 IEEE80211_ACTION_CAT_MESHPEERING, 1740 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1741 args); 1742 break; 1743 case IEEE80211_NODE_MESH_HOLDING: 1744 args[0] = ni->ni_mlpid; 1745 args[1] = meshpeer->peer_llinkid; 1746 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1747 ieee80211_send_action(ni, 1748 IEEE80211_ACTION_CAT_MESHPEERING, 1749 IEEE80211_ACTION_MESHPEERING_CLOSE, 1750 args); 1751 break; 1752 } 1753 return 0; 1754} 1755 1756static int 1757mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1758 const struct ieee80211_frame *wh, 1759 const uint8_t *frm, const uint8_t *efrm) 1760{ 1761 struct ieee80211vap *vap = ni->ni_vap; 1762 struct ieee80211_meshpeer_ie ie; 1763 const struct ieee80211_meshpeer_ie *meshpeer; 1764 uint16_t args[3]; 1765 1766 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1767 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1768 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1769 if (meshpeer == NULL) { 1770 return 0; 1771 } 1772 1773 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1774 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1775 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1776 1777 switch (ni->ni_mlstate) { 1778 case IEEE80211_NODE_MESH_OPENRCV: 1779 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1780 mesh_peer_timeout_stop(ni); 1781 break; 1782 case IEEE80211_NODE_MESH_OPENSNT: 1783 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1784 break; 1785 case IEEE80211_NODE_MESH_HOLDING: 1786 args[0] = ni->ni_mlpid; 1787 args[1] = meshpeer->peer_llinkid; 1788 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1789 ieee80211_send_action(ni, 1790 IEEE80211_ACTION_CAT_MESHPEERING, 1791 IEEE80211_ACTION_MESHPEERING_CLOSE, 1792 args); 1793 break; 1794 case IEEE80211_NODE_MESH_CONFIRMRCV: 1795 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1796 args[0] = ni->ni_mlpid; 1797 args[1] = ni->ni_mllid; 1798 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1799 ieee80211_send_action(ni, 1800 IEEE80211_ACTION_CAT_MESHPEERING, 1801 IEEE80211_ACTION_MESHPEERING_CLOSE, 1802 args); 1803 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1804 mesh_peer_timeout_setup(ni); 1805 } 1806 break; 1807 default: 1808 IEEE80211_DISCARD(vap, 1809 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1810 wh, NULL, "received confirm in invalid state %d", 1811 ni->ni_mlstate); 1812 vap->iv_stats.is_rx_mgtdiscard++; 1813 break; 1814 } 1815 return 0; 1816} 1817 1818static int 1819mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1820 const struct ieee80211_frame *wh, 1821 const uint8_t *frm, const uint8_t *efrm) 1822{ 1823 uint16_t args[3]; 1824 1825 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1826 ni, "%s", "recv PEER CLOSE"); 1827 1828 switch (ni->ni_mlstate) { 1829 case IEEE80211_NODE_MESH_IDLE: 1830 /* ignore */ 1831 break; 1832 case IEEE80211_NODE_MESH_OPENRCV: 1833 case IEEE80211_NODE_MESH_OPENSNT: 1834 case IEEE80211_NODE_MESH_CONFIRMRCV: 1835 case IEEE80211_NODE_MESH_ESTABLISHED: 1836 args[0] = ni->ni_mlpid; 1837 args[1] = ni->ni_mllid; 1838 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1839 ieee80211_send_action(ni, 1840 IEEE80211_ACTION_CAT_MESHPEERING, 1841 IEEE80211_ACTION_MESHPEERING_CLOSE, 1842 args); 1843 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1844 mesh_peer_timeout_setup(ni); 1845 break; 1846 case IEEE80211_NODE_MESH_HOLDING: 1847 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1848 mesh_peer_timeout_setup(ni); 1849 break; 1850 } 1851 return 0; 1852} 1853 1854/* 1855 * Link Metric handling. 1856 */ 1857static int 1858mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1859 const struct ieee80211_frame *wh, 1860 const uint8_t *frm, const uint8_t *efrm) 1861{ 1862 uint32_t metric; 1863 1864 metric = mesh_airtime_calc(ni); 1865 ieee80211_send_action(ni, 1866 IEEE80211_ACTION_CAT_MESHLMETRIC, 1867 IEEE80211_ACTION_MESHLMETRIC_REP, 1868 &metric); 1869 return 0; 1870} 1871 1872static int 1873mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1874 const struct ieee80211_frame *wh, 1875 const uint8_t *frm, const uint8_t *efrm) 1876{ 1877 return 0; 1878} 1879 1880static int 1881mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1882{ 1883 struct ieee80211_bpf_params params; 1884 1885 memset(¶ms, 0, sizeof(params)); 1886 params.ibp_pri = WME_AC_VO; 1887 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1888 /* XXX ucast/mcast */ 1889 params.ibp_try0 = ni->ni_txparms->maxretry; 1890 params.ibp_power = ni->ni_txpower; 1891 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1892 ¶ms); 1893} 1894 1895#define ADDSHORT(frm, v) do { \ 1896 frm[0] = (v) & 0xff; \ 1897 frm[1] = (v) >> 8; \ 1898 frm += 2; \ 1899} while (0) 1900#define ADDWORD(frm, v) do { \ 1901 frm[0] = (v) & 0xff; \ 1902 frm[1] = ((v) >> 8) & 0xff; \ 1903 frm[2] = ((v) >> 16) & 0xff; \ 1904 frm[3] = ((v) >> 24) & 0xff; \ 1905 frm += 4; \ 1906} while (0) 1907 1908static int 1909mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1910 int category, int action, void *args0) 1911{ 1912 struct ieee80211vap *vap = ni->ni_vap; 1913 struct ieee80211com *ic = ni->ni_ic; 1914 uint16_t *args = args0; 1915 const struct ieee80211_rateset *rs; 1916 struct mbuf *m; 1917 uint8_t *frm; 1918 1919 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1920 "send PEER OPEN action: localid 0x%x", args[0]); 1921 1922 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1923 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1924 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1925 ieee80211_ref_node(ni); 1926 1927 m = ieee80211_getmgtframe(&frm, 1928 ic->ic_headroom + sizeof(struct ieee80211_frame), 1929 sizeof(uint16_t) /* action+category */ 1930 + sizeof(uint16_t) /* capabilites */ 1931 + 2 + IEEE80211_RATE_SIZE 1932 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1933 + 2 + IEEE80211_MESHID_LEN 1934 + sizeof(struct ieee80211_meshconf_ie) 1935 + sizeof(struct ieee80211_meshpeer_ie) 1936 ); 1937 if (m != NULL) { 1938 /* 1939 * mesh peer open action frame format: 1940 * [1] category 1941 * [1] action 1942 * [2] capabilities 1943 * [tlv] rates 1944 * [tlv] xrates 1945 * [tlv] mesh id 1946 * [tlv] mesh conf 1947 * [tlv] mesh peer link mgmt 1948 */ 1949 *frm++ = category; 1950 *frm++ = action; 1951 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1952 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1953 frm = ieee80211_add_rates(frm, rs); 1954 frm = ieee80211_add_xrates(frm, rs); 1955 frm = ieee80211_add_meshid(frm, vap); 1956 frm = ieee80211_add_meshconf(frm, vap); 1957 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1958 args[0], 0, 0); 1959 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1960 return mesh_send_action(ni, m); 1961 } else { 1962 vap->iv_stats.is_tx_nobuf++; 1963 ieee80211_free_node(ni); 1964 return ENOMEM; 1965 } 1966} 1967 1968static int 1969mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1970 int category, int action, void *args0) 1971{ 1972 struct ieee80211vap *vap = ni->ni_vap; 1973 struct ieee80211com *ic = ni->ni_ic; 1974 uint16_t *args = args0; 1975 const struct ieee80211_rateset *rs; 1976 struct mbuf *m; 1977 uint8_t *frm; 1978 1979 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1980 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1981 args[0], args[1]); 1982 1983 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1984 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1985 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1986 ieee80211_ref_node(ni); 1987 1988 m = ieee80211_getmgtframe(&frm, 1989 ic->ic_headroom + sizeof(struct ieee80211_frame), 1990 sizeof(uint16_t) /* action+category */ 1991 + sizeof(uint16_t) /* capabilites */ 1992 + sizeof(uint16_t) /* status code */ 1993 + sizeof(uint16_t) /* AID */ 1994 + 2 + IEEE80211_RATE_SIZE 1995 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1996 + 2 + IEEE80211_MESHID_LEN 1997 + sizeof(struct ieee80211_meshconf_ie) 1998 + sizeof(struct ieee80211_meshpeer_ie) 1999 ); 2000 if (m != NULL) { 2001 /* 2002 * mesh peer confirm action frame format: 2003 * [1] category 2004 * [1] action 2005 * [2] capabilities 2006 * [2] status code 2007 * [2] association id (peer ID) 2008 * [tlv] rates 2009 * [tlv] xrates 2010 * [tlv] mesh id 2011 * [tlv] mesh conf 2012 * [tlv] mesh peer link mgmt 2013 */ 2014 *frm++ = category; 2015 *frm++ = action; 2016 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2017 ADDSHORT(frm, 0); /* status code */ 2018 ADDSHORT(frm, args[1]); /* AID */ 2019 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2020 frm = ieee80211_add_rates(frm, rs); 2021 frm = ieee80211_add_xrates(frm, rs); 2022 frm = ieee80211_add_meshid(frm, vap); 2023 frm = ieee80211_add_meshconf(frm, vap); 2024 frm = ieee80211_add_meshpeer(frm, 2025 IEEE80211_MESH_PEER_LINK_CONFIRM, 2026 args[0], args[1], 0); 2027 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2028 return mesh_send_action(ni, m); 2029 } else { 2030 vap->iv_stats.is_tx_nobuf++; 2031 ieee80211_free_node(ni); 2032 return ENOMEM; 2033 } 2034} 2035 2036static int 2037mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2038 int category, int action, void *args0) 2039{ 2040 struct ieee80211vap *vap = ni->ni_vap; 2041 struct ieee80211com *ic = ni->ni_ic; 2042 uint16_t *args = args0; 2043 struct mbuf *m; 2044 uint8_t *frm; 2045 2046 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2047 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2048 args[0], args[1], args[2]); 2049 2050 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2051 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2052 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2053 ieee80211_ref_node(ni); 2054 2055 m = ieee80211_getmgtframe(&frm, 2056 ic->ic_headroom + sizeof(struct ieee80211_frame), 2057 sizeof(uint16_t) /* action+category */ 2058 + sizeof(uint16_t) /* reason code */ 2059 + 2 + IEEE80211_MESHID_LEN 2060 + sizeof(struct ieee80211_meshpeer_ie) 2061 ); 2062 if (m != NULL) { 2063 /* 2064 * mesh peer close action frame format: 2065 * [1] category 2066 * [1] action 2067 * [2] reason code 2068 * [tlv] mesh id 2069 * [tlv] mesh peer link mgmt 2070 */ 2071 *frm++ = category; 2072 *frm++ = action; 2073 ADDSHORT(frm, args[2]); /* reason code */ 2074 frm = ieee80211_add_meshid(frm, vap); 2075 frm = ieee80211_add_meshpeer(frm, 2076 IEEE80211_MESH_PEER_LINK_CLOSE, 2077 args[0], args[1], args[2]); 2078 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2079 return mesh_send_action(ni, m); 2080 } else { 2081 vap->iv_stats.is_tx_nobuf++; 2082 ieee80211_free_node(ni); 2083 return ENOMEM; 2084 } 2085} 2086 2087static int 2088mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2089 int category, int action, void *arg0) 2090{ 2091 struct ieee80211vap *vap = ni->ni_vap; 2092 struct ieee80211com *ic = ni->ni_ic; 2093 struct mbuf *m; 2094 uint8_t *frm; 2095 2096 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2097 "%s", "send LINK METRIC REQUEST action"); 2098 2099 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2100 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2101 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2102 ieee80211_ref_node(ni); 2103 2104 m = ieee80211_getmgtframe(&frm, 2105 ic->ic_headroom + sizeof(struct ieee80211_frame), 2106 sizeof(uint16_t) /* action+category */ 2107 ); 2108 if (m != NULL) { 2109 /* 2110 * mesh link metric request 2111 * [1] category 2112 * [1] action 2113 */ 2114 *frm++ = category; 2115 *frm++ = action; 2116 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2117 return mesh_send_action(ni, m); 2118 } else { 2119 vap->iv_stats.is_tx_nobuf++; 2120 ieee80211_free_node(ni); 2121 return ENOMEM; 2122 } 2123} 2124 2125static int 2126mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2127 int category, int action, void *args0) 2128{ 2129 struct ieee80211vap *vap = ni->ni_vap; 2130 struct ieee80211com *ic = ni->ni_ic; 2131 uint32_t *metric = args0; 2132 struct mbuf *m; 2133 uint8_t *frm; 2134 2135 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2136 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2137 2138 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2139 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2140 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2141 ieee80211_ref_node(ni); 2142 2143 m = ieee80211_getmgtframe(&frm, 2144 ic->ic_headroom + sizeof(struct ieee80211_frame), 2145 sizeof(uint16_t) /* action+category */ 2146 + sizeof(struct ieee80211_meshlmetric_ie) 2147 ); 2148 if (m != NULL) { 2149 /* 2150 * mesh link metric reply 2151 * [1] category 2152 * [1] action 2153 * [tlv] mesh link metric 2154 */ 2155 *frm++ = category; 2156 *frm++ = action; 2157 frm = ieee80211_add_meshlmetric(frm, *metric); 2158 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2159 return mesh_send_action(ni, m); 2160 } else { 2161 vap->iv_stats.is_tx_nobuf++; 2162 ieee80211_free_node(ni); 2163 return ENOMEM; 2164 } 2165} 2166 2167static void 2168mesh_peer_timeout_setup(struct ieee80211_node *ni) 2169{ 2170 switch (ni->ni_mlstate) { 2171 case IEEE80211_NODE_MESH_HOLDING: 2172 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2173 break; 2174 case IEEE80211_NODE_MESH_CONFIRMRCV: 2175 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2176 break; 2177 case IEEE80211_NODE_MESH_IDLE: 2178 ni->ni_mltval = 0; 2179 break; 2180 default: 2181 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2182 break; 2183 } 2184 if (ni->ni_mltval) 2185 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2186 mesh_peer_timeout_cb, ni); 2187} 2188 2189/* 2190 * Same as above but backoffs timer statisically 50%. 2191 */ 2192static void 2193mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2194{ 2195 uint32_t r; 2196 2197 r = arc4random(); 2198 ni->ni_mltval += r % ni->ni_mltval; 2199 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2200 ni); 2201} 2202 2203static __inline void 2204mesh_peer_timeout_stop(struct ieee80211_node *ni) 2205{ 2206 callout_drain(&ni->ni_mltimer); 2207} 2208 2209/* 2210 * Mesh Peer Link Management FSM timeout handling. 2211 */ 2212static void 2213mesh_peer_timeout_cb(void *arg) 2214{ 2215 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2216 uint16_t args[3]; 2217 2218 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2219 ni, "mesh link timeout, state %d, retry counter %d", 2220 ni->ni_mlstate, ni->ni_mlrcnt); 2221 2222 switch (ni->ni_mlstate) { 2223 case IEEE80211_NODE_MESH_IDLE: 2224 case IEEE80211_NODE_MESH_ESTABLISHED: 2225 break; 2226 case IEEE80211_NODE_MESH_OPENSNT: 2227 case IEEE80211_NODE_MESH_OPENRCV: 2228 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2229 args[0] = ni->ni_mlpid; 2230 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2231 ieee80211_send_action(ni, 2232 IEEE80211_ACTION_CAT_MESHPEERING, 2233 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2234 ni->ni_mlrcnt = 0; 2235 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2236 mesh_peer_timeout_setup(ni); 2237 } else { 2238 args[0] = ni->ni_mlpid; 2239 ieee80211_send_action(ni, 2240 IEEE80211_ACTION_CAT_MESHPEERING, 2241 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2242 ni->ni_mlrcnt++; 2243 mesh_peer_timeout_backoff(ni); 2244 } 2245 break; 2246 case IEEE80211_NODE_MESH_CONFIRMRCV: 2247 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2248 args[0] = ni->ni_mlpid; 2249 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2250 ieee80211_send_action(ni, 2251 IEEE80211_ACTION_CAT_MESHPEERING, 2252 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2253 ni->ni_mlrcnt = 0; 2254 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2255 mesh_peer_timeout_setup(ni); 2256 } else { 2257 ni->ni_mlrcnt++; 2258 mesh_peer_timeout_setup(ni); 2259 } 2260 break; 2261 case IEEE80211_NODE_MESH_HOLDING: 2262 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2263 break; 2264 } 2265} 2266 2267static int 2268mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2269{ 2270 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2271 2272 if (ie == NULL || ie[1] != ms->ms_idlen) 2273 return 1; 2274 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2275} 2276 2277/* 2278 * Check if we are using the same algorithms for this mesh. 2279 */ 2280static int 2281mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2282{ 2283 const struct ieee80211_meshconf_ie *meshconf = 2284 (const struct ieee80211_meshconf_ie *) ie; 2285 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2286 2287 if (meshconf == NULL) 2288 return 1; 2289 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2290 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2291 "unknown path selection algorithm: 0x%x\n", 2292 meshconf->conf_pselid); 2293 return 1; 2294 } 2295 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2296 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2297 "unknown path metric algorithm: 0x%x\n", 2298 meshconf->conf_pmetid); 2299 return 1; 2300 } 2301 if (meshconf->conf_ccid != 0) { 2302 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2303 "unknown congestion control algorithm: 0x%x\n", 2304 meshconf->conf_ccid); 2305 return 1; 2306 } 2307 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2308 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2309 "unknown sync algorithm: 0x%x\n", 2310 meshconf->conf_syncid); 2311 return 1; 2312 } 2313 if (meshconf->conf_authid != 0) { 2314 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2315 "unknown auth auth algorithm: 0x%x\n", 2316 meshconf->conf_pselid); 2317 return 1; 2318 } 2319 /* Not accepting peers */ 2320 if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) { 2321 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2322 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2323 return 1; 2324 } 2325 return 0; 2326} 2327 2328static int 2329mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2330 const uint8_t *ie) 2331{ 2332 const struct ieee80211_meshpeer_ie *meshpeer = 2333 (const struct ieee80211_meshpeer_ie *) ie; 2334 2335 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2336 meshpeer->peer_len > 10) 2337 return 1; 2338 switch (subtype) { 2339 case IEEE80211_MESH_PEER_LINK_OPEN: 2340 if (meshpeer->peer_len != 6) 2341 return 1; 2342 break; 2343 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2344 if (meshpeer->peer_len != 8) 2345 return 1; 2346 break; 2347 case IEEE80211_MESH_PEER_LINK_CLOSE: 2348 if (meshpeer->peer_len < 8) 2349 return 1; 2350 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2351 return 1; 2352 if (meshpeer->peer_rcode == 0) 2353 return 1; 2354 break; 2355 } 2356 return 0; 2357} 2358 2359/* 2360 * Add a Mesh ID IE to a frame. 2361 */ 2362uint8_t * 2363ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2364{ 2365 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2366 2367 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2368 2369 *frm++ = IEEE80211_ELEMID_MESHID; 2370 *frm++ = ms->ms_idlen; 2371 memcpy(frm, ms->ms_id, ms->ms_idlen); 2372 return frm + ms->ms_idlen; 2373} 2374 2375/* 2376 * Add a Mesh Configuration IE to a frame. 2377 * For now just use HWMP routing, Airtime link metric, Null Congestion 2378 * Signaling, Null Sync Protocol and Null Authentication. 2379 */ 2380uint8_t * 2381ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2382{ 2383 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2384 2385 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2386 2387 *frm++ = IEEE80211_ELEMID_MESHCONF; 2388 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2389 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2390 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2391 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2392 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2393 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2394 /* NB: set the number of neighbors before the rest */ 2395 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2396 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2397 *frm |= IEEE80211_MESHCONF_FORM_MP; 2398 frm += 1; 2399 *frm = 0; 2400 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2401 *frm |= IEEE80211_MESHCONF_CAP_AP; 2402 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2403 *frm |= IEEE80211_MESHCONF_CAP_FWRD; 2404 frm += 1; 2405 return frm; 2406} 2407 2408/* 2409 * Add a Mesh Peer Management IE to a frame. 2410 */ 2411uint8_t * 2412ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2413 uint16_t peerid, uint16_t reason) 2414{ 2415 /* XXX change for AH */ 2416 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2417 2418 KASSERT(localid != 0, ("localid == 0")); 2419 2420 *frm++ = IEEE80211_ELEMID_MESHPEER; 2421 switch (subtype) { 2422 case IEEE80211_MESH_PEER_LINK_OPEN: 2423 *frm++ = 6; /* length */ 2424 memcpy(frm, meshpeerproto, 4); 2425 frm += 4; 2426 ADDSHORT(frm, localid); /* local ID */ 2427 break; 2428 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2429 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2430 *frm++ = 8; /* length */ 2431 memcpy(frm, meshpeerproto, 4); 2432 frm += 4; 2433 ADDSHORT(frm, localid); /* local ID */ 2434 ADDSHORT(frm, peerid); /* peer ID */ 2435 break; 2436 case IEEE80211_MESH_PEER_LINK_CLOSE: 2437 if (peerid) 2438 *frm++ = 10; /* length */ 2439 else 2440 *frm++ = 8; /* length */ 2441 memcpy(frm, meshpeerproto, 4); 2442 frm += 4; 2443 ADDSHORT(frm, localid); /* local ID */ 2444 if (peerid) 2445 ADDSHORT(frm, peerid); /* peer ID */ 2446 ADDSHORT(frm, reason); 2447 break; 2448 } 2449 return frm; 2450} 2451 2452/* 2453 * Compute an Airtime Link Metric for the link with this node. 2454 * 2455 * Based on Draft 3.0 spec (11B.10, p.149). 2456 */ 2457/* 2458 * Max 802.11s overhead. 2459 */ 2460#define IEEE80211_MESH_MAXOVERHEAD \ 2461 (sizeof(struct ieee80211_qosframe_addr4) \ 2462 + sizeof(struct ieee80211_meshcntl_ae11) \ 2463 + sizeof(struct llc) \ 2464 + IEEE80211_ADDR_LEN \ 2465 + IEEE80211_WEP_IVLEN \ 2466 + IEEE80211_WEP_KIDLEN \ 2467 + IEEE80211_WEP_CRCLEN \ 2468 + IEEE80211_WEP_MICLEN \ 2469 + IEEE80211_CRC_LEN) 2470uint32_t 2471mesh_airtime_calc(struct ieee80211_node *ni) 2472{ 2473#define M_BITS 8 2474#define S_FACTOR (2 * M_BITS) 2475 struct ieee80211com *ic = ni->ni_ic; 2476 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2477 const static int nbits = 8192 << M_BITS; 2478 uint32_t overhead, rate, errrate; 2479 uint64_t res; 2480 2481 /* Time to transmit a frame */ 2482 rate = ni->ni_txrate; 2483 overhead = ieee80211_compute_duration(ic->ic_rt, 2484 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2485 /* Error rate in percentage */ 2486 /* XXX assuming small failures are ok */ 2487 errrate = (((ifp->if_oerrors + 2488 ifp->if_ierrors) / 100) << M_BITS) / 100; 2489 res = (overhead + (nbits / rate)) * 2490 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2491 2492 return (uint32_t)(res >> S_FACTOR); 2493#undef M_BITS 2494#undef S_FACTOR 2495} 2496 2497/* 2498 * Add a Mesh Link Metric report IE to a frame. 2499 */ 2500uint8_t * 2501ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2502{ 2503 *frm++ = IEEE80211_ELEMID_MESHLINK; 2504 *frm++ = 4; 2505 ADDWORD(frm, metric); 2506 return frm; 2507} 2508#undef ADDSHORT 2509#undef ADDWORD 2510 2511/* 2512 * Initialize any mesh-specific node state. 2513 */ 2514void 2515ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2516{ 2517 ni->ni_flags |= IEEE80211_NODE_QOS; 2518 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2519} 2520 2521/* 2522 * Cleanup any mesh-specific node state. 2523 */ 2524void 2525ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2526{ 2527 struct ieee80211vap *vap = ni->ni_vap; 2528 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2529 2530 callout_drain(&ni->ni_mltimer); 2531 /* NB: short-circuit callbacks after mesh_vdetach */ 2532 if (vap->iv_mesh != NULL) 2533 ms->ms_ppath->mpp_peerdown(ni); 2534} 2535 2536void 2537ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2538{ 2539 ni->ni_meshidlen = ie[1]; 2540 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2541} 2542 2543/* 2544 * Setup mesh-specific node state on neighbor discovery. 2545 */ 2546void 2547ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2548 const struct ieee80211_frame *wh, 2549 const struct ieee80211_scanparams *sp) 2550{ 2551 ieee80211_parse_meshid(ni, sp->meshid); 2552} 2553 2554void 2555ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2556 struct ieee80211_beacon_offsets *bo) 2557{ 2558 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2559 2560 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2561 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2562 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2563 } 2564} 2565 2566static int 2567mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2568{ 2569 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2570 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2571 struct ieee80211_mesh_route *rt; 2572 struct ieee80211req_mesh_route *imr; 2573 size_t len, off; 2574 uint8_t *p; 2575 int error; 2576 2577 if (vap->iv_opmode != IEEE80211_M_MBSS) 2578 return ENOSYS; 2579 2580 error = 0; 2581 switch (ireq->i_type) { 2582 case IEEE80211_IOC_MESH_ID: 2583 ireq->i_len = ms->ms_idlen; 2584 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2585 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2586 break; 2587 case IEEE80211_IOC_MESH_AP: 2588 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2589 break; 2590 case IEEE80211_IOC_MESH_FWRD: 2591 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2592 break; 2593 case IEEE80211_IOC_MESH_TTL: 2594 ireq->i_val = ms->ms_ttl; 2595 break; 2596 case IEEE80211_IOC_MESH_RTCMD: 2597 switch (ireq->i_val) { 2598 case IEEE80211_MESH_RTCMD_LIST: 2599 len = 0; 2600 MESH_RT_LOCK(ms); 2601 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2602 len += sizeof(*imr); 2603 } 2604 MESH_RT_UNLOCK(ms); 2605 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2606 ireq->i_len = len; 2607 return ENOMEM; 2608 } 2609 ireq->i_len = len; 2610 /* XXX M_WAIT? */ 2611 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2612 if (p == NULL) 2613 return ENOMEM; 2614 off = 0; 2615 MESH_RT_LOCK(ms); 2616 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2617 if (off >= len) 2618 break; 2619 imr = (struct ieee80211req_mesh_route *) 2620 (p + off); 2621 imr->imr_flags = rt->rt_flags; 2622 IEEE80211_ADDR_COPY(imr->imr_dest, 2623 rt->rt_dest); 2624 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2625 rt->rt_nexthop); 2626 imr->imr_metric = rt->rt_metric; 2627 imr->imr_nhops = rt->rt_nhops; 2628 imr->imr_lifetime = rt->rt_lifetime; 2629 imr->imr_lastmseq = rt->rt_lastmseq; 2630 off += sizeof(*imr); 2631 } 2632 MESH_RT_UNLOCK(ms); 2633 error = copyout(p, (uint8_t *)ireq->i_data, 2634 ireq->i_len); 2635 free(p, M_TEMP); 2636 break; 2637 case IEEE80211_MESH_RTCMD_FLUSH: 2638 case IEEE80211_MESH_RTCMD_ADD: 2639 case IEEE80211_MESH_RTCMD_DELETE: 2640 return EINVAL; 2641 default: 2642 return ENOSYS; 2643 } 2644 break; 2645 case IEEE80211_IOC_MESH_PR_METRIC: 2646 len = strlen(ms->ms_pmetric->mpm_descr); 2647 if (ireq->i_len < len) 2648 return EINVAL; 2649 ireq->i_len = len; 2650 error = copyout(ms->ms_pmetric->mpm_descr, 2651 (uint8_t *)ireq->i_data, len); 2652 break; 2653 case IEEE80211_IOC_MESH_PR_PATH: 2654 len = strlen(ms->ms_ppath->mpp_descr); 2655 if (ireq->i_len < len) 2656 return EINVAL; 2657 ireq->i_len = len; 2658 error = copyout(ms->ms_ppath->mpp_descr, 2659 (uint8_t *)ireq->i_data, len); 2660 break; 2661 default: 2662 return ENOSYS; 2663 } 2664 2665 return error; 2666} 2667IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2668 2669static int 2670mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2671{ 2672 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2673 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2674 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2675 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2676 int error; 2677 2678 if (vap->iv_opmode != IEEE80211_M_MBSS) 2679 return ENOSYS; 2680 2681 error = 0; 2682 switch (ireq->i_type) { 2683 case IEEE80211_IOC_MESH_ID: 2684 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2685 return EINVAL; 2686 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2687 if (error != 0) 2688 break; 2689 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2690 ms->ms_idlen = ireq->i_len; 2691 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2692 error = ENETRESET; 2693 break; 2694 case IEEE80211_IOC_MESH_AP: 2695 if (ireq->i_val) 2696 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2697 else 2698 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2699 error = ENETRESET; 2700 break; 2701 case IEEE80211_IOC_MESH_FWRD: 2702 if (ireq->i_val) 2703 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2704 else 2705 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2706 break; 2707 case IEEE80211_IOC_MESH_TTL: 2708 ms->ms_ttl = (uint8_t) ireq->i_val; 2709 break; 2710 case IEEE80211_IOC_MESH_RTCMD: 2711 switch (ireq->i_val) { 2712 case IEEE80211_MESH_RTCMD_LIST: 2713 return EINVAL; 2714 case IEEE80211_MESH_RTCMD_FLUSH: 2715 ieee80211_mesh_rt_flush(vap); 2716 break; 2717 case IEEE80211_MESH_RTCMD_ADD: 2718 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2719 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2720 return EINVAL; 2721 error = copyin(ireq->i_data, &tmpaddr, 2722 IEEE80211_ADDR_LEN); 2723 if (error == 0) 2724 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2725 break; 2726 case IEEE80211_MESH_RTCMD_DELETE: 2727 ieee80211_mesh_rt_del(vap, ireq->i_data); 2728 break; 2729 default: 2730 return ENOSYS; 2731 } 2732 break; 2733 case IEEE80211_IOC_MESH_PR_METRIC: 2734 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2735 if (error == 0) { 2736 error = mesh_select_proto_metric(vap, tmpproto); 2737 if (error == 0) 2738 error = ENETRESET; 2739 } 2740 break; 2741 case IEEE80211_IOC_MESH_PR_PATH: 2742 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2743 if (error == 0) { 2744 error = mesh_select_proto_path(vap, tmpproto); 2745 if (error == 0) 2746 error = ENETRESET; 2747 } 2748 break; 2749 default: 2750 return ENOSYS; 2751 } 2752 return error; 2753} 2754IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2755