ieee80211_mesh.c revision 197413
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 197413 2009-09-22 18:18:14Z 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_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 static const uint8_t emptyie[4] = { 0, 0, 0, 0 }; 348 349 for (i = 0; i < N(mesh_proto_paths); i++) { 350 if (memcmp(mpp->mpp_ie, mesh_proto_paths[i].mpp_ie, 4) == 0) 351 return EEXIST; 352 if (memcmp(mesh_proto_paths[i].mpp_ie, emptyie, 4) == 0 && 353 firstempty == -1) 354 firstempty = i; 355 } 356 if (firstempty < 0) 357 return ENOSPC; 358 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 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 static const uint8_t emptyie[4] = { 0, 0, 0, 0 }; 368 369 for (i = 0; i < N(mesh_proto_metrics); i++) { 370 if (memcmp(mpm->mpm_ie, mesh_proto_metrics[i].mpm_ie, 4) == 0) 371 return EEXIST; 372 if (memcmp(mesh_proto_metrics[i].mpm_ie, emptyie, 4) == 0 && 373 firstempty == -1) 374 firstempty = i; 375 } 376 if (firstempty < 0) 377 return ENOSPC; 378 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 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 if (vap->iv_state == IEEE80211_S_RUN) 392 vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 393 return 0; 394 } 395 } 396 return ENOENT; 397} 398 399static int 400mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 401{ 402 struct ieee80211_mesh_state *ms = vap->iv_mesh; 403 int i; 404 405 for (i = 0; i < N(mesh_proto_metrics); i++) { 406 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 407 ms->ms_pmetric = &mesh_proto_metrics[i]; 408 if (vap->iv_state == IEEE80211_S_RUN) 409 vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 410 return 0; 411 } 412 } 413 return ENOENT; 414} 415#undef N 416 417static void 418ieee80211_mesh_init(void) 419{ 420 421 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 422 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 423 424 /* 425 * Setup mesh parameters that depends on the clock frequency. 426 */ 427 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 428 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 429 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 430 431 /* 432 * Register action frame handlers. 433 */ 434 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 435 IEEE80211_ACTION_MESHPEERING_OPEN, 436 mesh_recv_action_meshpeering_open); 437 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 438 IEEE80211_ACTION_MESHPEERING_CONFIRM, 439 mesh_recv_action_meshpeering_confirm); 440 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 441 IEEE80211_ACTION_MESHPEERING_CLOSE, 442 mesh_recv_action_meshpeering_close); 443 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 444 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 445 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 446 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 447 448 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 449 IEEE80211_ACTION_MESHPEERING_OPEN, 450 mesh_send_action_meshpeering_open); 451 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 452 IEEE80211_ACTION_MESHPEERING_CONFIRM, 453 mesh_send_action_meshpeering_confirm); 454 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 455 IEEE80211_ACTION_MESHPEERING_CLOSE, 456 mesh_send_action_meshpeering_close); 457 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 458 IEEE80211_ACTION_MESHLMETRIC_REQ, 459 mesh_send_action_meshlink_request); 460 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 461 IEEE80211_ACTION_MESHLMETRIC_REP, 462 mesh_send_action_meshlink_reply); 463 464 /* 465 * Register Airtime Link Metric. 466 */ 467 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 468 469} 470SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 471 472void 473ieee80211_mesh_attach(struct ieee80211com *ic) 474{ 475 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 476} 477 478void 479ieee80211_mesh_detach(struct ieee80211com *ic) 480{ 481} 482 483static void 484mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 485{ 486 struct ieee80211com *ic = ni->ni_ic; 487 uint16_t args[3]; 488 489 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 490 args[0] = ni->ni_mlpid; 491 args[1] = ni->ni_mllid; 492 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 493 ieee80211_send_action(ni, 494 IEEE80211_ACTION_CAT_MESHPEERING, 495 IEEE80211_ACTION_MESHPEERING_CLOSE, 496 args); 497 } 498 callout_drain(&ni->ni_mltimer); 499 /* XXX belongs in hwmp */ 500 ieee80211_ageq_drain_node(&ic->ic_stageq, 501 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 502} 503 504static void 505mesh_vdetach(struct ieee80211vap *vap) 506{ 507 struct ieee80211_mesh_state *ms = vap->iv_mesh; 508 509 callout_drain(&ms->ms_cleantimer); 510 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 511 NULL); 512 ieee80211_mesh_rt_flush(vap); 513 mtx_destroy(&ms->ms_rt_lock); 514 ms->ms_ppath->mpp_vdetach(vap); 515 free(vap->iv_mesh, M_80211_VAP); 516 vap->iv_mesh = NULL; 517} 518 519static void 520mesh_vattach(struct ieee80211vap *vap) 521{ 522 struct ieee80211_mesh_state *ms; 523 vap->iv_newstate = mesh_newstate; 524 vap->iv_input = mesh_input; 525 vap->iv_opdetach = mesh_vdetach; 526 vap->iv_recv_mgmt = mesh_recv_mgmt; 527 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 528 M_NOWAIT | M_ZERO); 529 if (ms == NULL) { 530 printf("%s: couldn't alloc MBSS state\n", __func__); 531 return; 532 } 533 vap->iv_mesh = ms; 534 ms->ms_seq = 0; 535 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 536 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 537 TAILQ_INIT(&ms->ms_routes); 538 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 539 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 540 mesh_select_proto_metric(vap, "AIRTIME"); 541 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 542 mesh_select_proto_path(vap, "HWMP"); 543 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 544 ms->ms_ppath->mpp_vattach(vap); 545} 546 547/* 548 * IEEE80211_M_MBSS vap state machine handler. 549 */ 550static int 551mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 552{ 553 struct ieee80211_mesh_state *ms = vap->iv_mesh; 554 struct ieee80211com *ic = vap->iv_ic; 555 struct ieee80211_node *ni; 556 enum ieee80211_state ostate; 557 558 IEEE80211_LOCK_ASSERT(ic); 559 560 ostate = vap->iv_state; 561 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 562 __func__, ieee80211_state_name[ostate], 563 ieee80211_state_name[nstate], arg); 564 vap->iv_state = nstate; /* state transition */ 565 if (ostate != IEEE80211_S_SCAN) 566 ieee80211_cancel_scan(vap); /* background scan */ 567 ni = vap->iv_bss; /* NB: no reference held */ 568 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 569 callout_drain(&ms->ms_cleantimer); 570 switch (nstate) { 571 case IEEE80211_S_INIT: 572 switch (ostate) { 573 case IEEE80211_S_SCAN: 574 ieee80211_cancel_scan(vap); 575 break; 576 case IEEE80211_S_CAC: 577 ieee80211_dfs_cac_stop(vap); 578 break; 579 case IEEE80211_S_RUN: 580 ieee80211_iterate_nodes(&ic->ic_sta, 581 mesh_vdetach_peers, NULL); 582 break; 583 default: 584 break; 585 } 586 if (ostate != IEEE80211_S_INIT) { 587 /* NB: optimize INIT -> INIT case */ 588 ieee80211_reset_bss(vap); 589 ieee80211_mesh_rt_flush(vap); 590 } 591 break; 592 case IEEE80211_S_SCAN: 593 switch (ostate) { 594 case IEEE80211_S_INIT: 595 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 596 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 597 ms->ms_idlen != 0) { 598 /* 599 * Already have a channel and a mesh ID; bypass 600 * the scan and startup immediately. 601 */ 602 ieee80211_create_ibss(vap, vap->iv_des_chan); 603 break; 604 } 605 /* 606 * Initiate a scan. We can come here as a result 607 * of an IEEE80211_IOC_SCAN_REQ too in which case 608 * the vap will be marked with IEEE80211_FEXT_SCANREQ 609 * and the scan request parameters will be present 610 * in iv_scanreq. Otherwise we do the default. 611 */ 612 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 613 ieee80211_check_scan(vap, 614 vap->iv_scanreq_flags, 615 vap->iv_scanreq_duration, 616 vap->iv_scanreq_mindwell, 617 vap->iv_scanreq_maxdwell, 618 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 619 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 620 } else 621 ieee80211_check_scan_current(vap); 622 break; 623 default: 624 break; 625 } 626 break; 627 case IEEE80211_S_CAC: 628 /* 629 * Start CAC on a DFS channel. We come here when starting 630 * a bss on a DFS channel (see ieee80211_create_ibss). 631 */ 632 ieee80211_dfs_cac_start(vap); 633 break; 634 case IEEE80211_S_RUN: 635 switch (ostate) { 636 case IEEE80211_S_INIT: 637 /* 638 * Already have a channel; bypass the 639 * scan and startup immediately. 640 * Note that ieee80211_create_ibss will call 641 * back to do a RUN->RUN state change. 642 */ 643 ieee80211_create_ibss(vap, 644 ieee80211_ht_adjust_channel(ic, 645 ic->ic_curchan, vap->iv_flags_ht)); 646 /* NB: iv_bss is changed on return */ 647 break; 648 case IEEE80211_S_CAC: 649 /* 650 * NB: This is the normal state change when CAC 651 * expires and no radar was detected; no need to 652 * clear the CAC timer as it's already expired. 653 */ 654 /* fall thru... */ 655 case IEEE80211_S_CSA: 656#if 0 657 /* 658 * Shorten inactivity timer of associated stations 659 * to weed out sta's that don't follow a CSA. 660 */ 661 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 662#endif 663 /* 664 * Update bss node channel to reflect where 665 * we landed after CSA. 666 */ 667 ieee80211_node_set_chan(vap->iv_bss, 668 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 669 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 670 /* XXX bypass debug msgs */ 671 break; 672 case IEEE80211_S_SCAN: 673 case IEEE80211_S_RUN: 674#ifdef IEEE80211_DEBUG 675 if (ieee80211_msg_debug(vap)) { 676 struct ieee80211_node *ni = vap->iv_bss; 677 ieee80211_note(vap, 678 "synchronized with %s meshid ", 679 ether_sprintf(ni->ni_meshid)); 680 ieee80211_print_essid(ni->ni_meshid, 681 ni->ni_meshidlen); 682 /* XXX MCS/HT */ 683 printf(" channel %d\n", 684 ieee80211_chan2ieee(ic, ic->ic_curchan)); 685 } 686#endif 687 break; 688 default: 689 break; 690 } 691 ieee80211_node_authorize(vap->iv_bss); 692 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 693 mesh_rt_cleanup_cb, vap); 694 break; 695 default: 696 break; 697 } 698 /* NB: ostate not nstate */ 699 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 700 return 0; 701} 702 703static void 704mesh_rt_cleanup_cb(void *arg) 705{ 706 struct ieee80211vap *vap = arg; 707 struct ieee80211_mesh_state *ms = vap->iv_mesh; 708 709 mesh_rt_flush_invalid(vap); 710 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 711 mesh_rt_cleanup_cb, vap); 712} 713 714 715/* 716 * Helper function to note the Mesh Peer Link FSM change. 717 */ 718static void 719mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 720{ 721 struct ieee80211vap *vap = ni->ni_vap; 722 struct ieee80211_mesh_state *ms = vap->iv_mesh; 723#ifdef IEEE80211_DEBUG 724 static const char *meshlinkstates[] = { 725 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 726 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 727 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 728 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 729 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 730 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 731 }; 732#endif 733 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 734 ni, "peer link: %s -> %s", 735 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 736 737 /* track neighbor count */ 738 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 739 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 740 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 741 ms->ms_neighbors++; 742 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 743 state != IEEE80211_NODE_MESH_ESTABLISHED) { 744 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 745 ms->ms_neighbors--; 746 } 747 ni->ni_mlstate = state; 748 switch (state) { 749 case IEEE80211_NODE_MESH_HOLDING: 750 ms->ms_ppath->mpp_peerdown(ni); 751 break; 752 case IEEE80211_NODE_MESH_ESTABLISHED: 753 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 754 break; 755 default: 756 break; 757 } 758} 759 760/* 761 * Helper function to generate a unique local ID required for mesh 762 * peer establishment. 763 */ 764static void 765mesh_checkid(void *arg, struct ieee80211_node *ni) 766{ 767 uint16_t *r = arg; 768 769 if (*r == ni->ni_mllid) 770 *(uint16_t *)arg = 0; 771} 772 773static uint32_t 774mesh_generateid(struct ieee80211vap *vap) 775{ 776 int maxiter = 4; 777 uint16_t r; 778 779 do { 780 get_random_bytes(&r, 2); 781 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 782 maxiter--; 783 } while (r == 0 && maxiter > 0); 784 return r; 785} 786 787/* 788 * Verifies if we already received this packet by checking its 789 * sequence number. 790 * Returns 0 if the frame is to be accepted, 1 otherwise. 791 */ 792static int 793mesh_checkpseq(struct ieee80211vap *vap, 794 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 795{ 796 struct ieee80211_mesh_route *rt; 797 798 rt = ieee80211_mesh_rt_find(vap, source); 799 if (rt == NULL) { 800 rt = ieee80211_mesh_rt_add(vap, source); 801 if (rt == NULL) { 802 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 803 "%s", "add mcast route failed"); 804 vap->iv_stats.is_mesh_rtaddfailed++; 805 return 1; 806 } 807 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 808 "add mcast route, mesh seqno %d", seq); 809 rt->rt_lastmseq = seq; 810 return 0; 811 } 812 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 813 return 1; 814 } else { 815 rt->rt_lastmseq = seq; 816 return 0; 817 } 818} 819 820/* 821 * Iterate the routing table and locate the next hop. 822 */ 823static struct ieee80211_node * 824mesh_find_txnode(struct ieee80211vap *vap, 825 const uint8_t dest[IEEE80211_ADDR_LEN]) 826{ 827 struct ieee80211_mesh_route *rt; 828 829 rt = ieee80211_mesh_rt_find(vap, dest); 830 if (rt == NULL) 831 return NULL; 832 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 833 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 834 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 835 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 836 /* XXX stat */ 837 return NULL; 838 } 839 return ieee80211_find_txnode(vap, rt->rt_nexthop); 840} 841 842/* 843 * Forward the specified frame. 844 * Decrement the TTL and set TA to our MAC address. 845 */ 846static void 847mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 848 const struct ieee80211_meshcntl *mc) 849{ 850 struct ieee80211com *ic = vap->iv_ic; 851 struct ieee80211_mesh_state *ms = vap->iv_mesh; 852 struct ifnet *ifp = vap->iv_ifp; 853 struct ifnet *parent = ic->ic_ifp; 854 const struct ieee80211_frame *wh = 855 mtod(m, const struct ieee80211_frame *); 856 struct mbuf *mcopy; 857 struct ieee80211_meshcntl *mccopy; 858 struct ieee80211_frame *whcopy; 859 struct ieee80211_node *ni; 860 int err; 861 862 if (mc->mc_ttl == 0) { 863 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 864 "%s", "frame not fwd'd, ttl 0"); 865 vap->iv_stats.is_mesh_fwd_ttl++; 866 return; 867 } 868 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 869 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 870 "%s", "frame not fwd'd, fwding disabled"); 871 vap->iv_stats.is_mesh_fwd_disabled++; 872 return; 873 } 874 mcopy = m_dup(m, M_DONTWAIT); 875 if (mcopy == NULL) { 876 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 877 "%s", "frame not fwd'd, cannot dup"); 878 vap->iv_stats.is_mesh_fwd_nobuf++; 879 ifp->if_oerrors++; 880 return; 881 } 882 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 883 sizeof(struct ieee80211_meshcntl)); 884 if (mcopy == NULL) { 885 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 886 "%s", "frame not fwd'd, too short"); 887 vap->iv_stats.is_mesh_fwd_tooshort++; 888 ifp->if_oerrors++; 889 m_freem(mcopy); 890 return; 891 } 892 whcopy = mtod(mcopy, struct ieee80211_frame *); 893 mccopy = (struct ieee80211_meshcntl *) 894 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 895 /* XXX clear other bits? */ 896 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 897 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 898 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 899 ni = ieee80211_ref_node(vap->iv_bss); 900 mcopy->m_flags |= M_MCAST; 901 } else { 902 ni = mesh_find_txnode(vap, whcopy->i_addr3); 903 if (ni == NULL) { 904 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 905 "%s", "frame not fwd'd, no path"); 906 vap->iv_stats.is_mesh_fwd_nopath++; 907 m_freem(mcopy); 908 return; 909 } 910 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 911 } 912 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 913 mccopy->mc_ttl--; 914 915 /* XXX calculate priority so drivers can find the tx queue */ 916 M_WME_SETAC(mcopy, WME_AC_BE); 917 918 /* XXX do we know m_nextpkt is NULL? */ 919 mcopy->m_pkthdr.rcvif = (void *) ni; 920 err = parent->if_transmit(parent, mcopy); 921 if (err != 0) { 922 /* NB: IFQ_HANDOFF reclaims mbuf */ 923 ieee80211_free_node(ni); 924 } else { 925 ifp->if_opackets++; 926 } 927} 928 929static struct mbuf * 930mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 931{ 932#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 933 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 934 sizeof(struct ieee80211_meshcntl_ae11)]; 935 const struct ieee80211_qosframe_addr4 *wh; 936 const struct ieee80211_meshcntl_ae10 *mc; 937 struct ether_header *eh; 938 struct llc *llc; 939 int ae; 940 941 if (m->m_len < hdrlen + sizeof(*llc) && 942 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 943 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 944 "discard data frame: %s", "m_pullup failed"); 945 vap->iv_stats.is_rx_tooshort++; 946 return NULL; 947 } 948 memcpy(b, mtod(m, caddr_t), hdrlen); 949 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 950 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 951 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 952 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 953 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 954 955 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 956 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 957 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 958 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 959 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 960 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 961 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 962 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 963 llc = NULL; 964 } else { 965 m_adj(m, hdrlen - sizeof(*eh)); 966 } 967 eh = mtod(m, struct ether_header *); 968 ae = mc->mc_flags & 3; 969 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 970 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 971 if (ae == 0) { 972 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 973 } else if (ae == 1) { 974 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 975 } else { 976 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 977 (const struct ieee80211_frame *)wh, NULL, 978 "bad AE %d", ae); 979 vap->iv_stats.is_mesh_badae++; 980 m_freem(m); 981 return NULL; 982 } 983 } else { 984 if (ae == 0) { 985 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 986 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 987 } else if (ae == 2) { 988 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 989 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 990 } else { 991 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 992 (const struct ieee80211_frame *)wh, NULL, 993 "bad AE %d", ae); 994 vap->iv_stats.is_mesh_badae++; 995 m_freem(m); 996 return NULL; 997 } 998 } 999#ifdef ALIGNED_POINTER 1000 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 1001 m = ieee80211_realign(vap, m, sizeof(*eh)); 1002 if (m == NULL) 1003 return NULL; 1004 } 1005#endif /* ALIGNED_POINTER */ 1006 if (llc != NULL) { 1007 eh = mtod(m, struct ether_header *); 1008 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 1009 } 1010 return m; 1011#undef WDIR 1012} 1013 1014/* 1015 * Return non-zero if the unicast mesh data frame should be processed 1016 * locally. Frames that are not proxy'd have our address, otherwise 1017 * we need to consult the routing table to look for a proxy entry. 1018 */ 1019static __inline int 1020mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 1021 const struct ieee80211_meshcntl *mc) 1022{ 1023 int ae = mc->mc_flags & 3; 1024 1025 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1026 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1027 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1028 if (ae == 2) { /* ucast w/ proxy */ 1029 const struct ieee80211_meshcntl_ae10 *mc10 = 1030 (const struct ieee80211_meshcntl_ae10 *) mc; 1031 struct ieee80211_mesh_route *rt = 1032 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1033 /* check for proxy route to ourself */ 1034 return (rt != NULL && 1035 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1036 } else /* ucast w/o proxy */ 1037 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1038} 1039 1040static int 1041mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1042{ 1043#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1044#define HAS_SEQ(type) ((type & 0x4) == 0) 1045 struct ieee80211vap *vap = ni->ni_vap; 1046 struct ieee80211com *ic = ni->ni_ic; 1047 struct ifnet *ifp = vap->iv_ifp; 1048 struct ieee80211_frame *wh; 1049 const struct ieee80211_meshcntl *mc; 1050 int hdrspace, meshdrlen, need_tap; 1051 uint8_t dir, type, subtype, qos; 1052 uint32_t seq; 1053 uint8_t *addr; 1054 ieee80211_seq rxseq; 1055 1056 KASSERT(ni != NULL, ("null node")); 1057 ni->ni_inact = ni->ni_inact_reload; 1058 1059 need_tap = 1; /* mbuf need to be tapped. */ 1060 type = -1; /* undefined */ 1061 1062 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1063 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1064 ni->ni_macaddr, NULL, 1065 "too short (1): len %u", m->m_pkthdr.len); 1066 vap->iv_stats.is_rx_tooshort++; 1067 goto out; 1068 } 1069 /* 1070 * Bit of a cheat here, we use a pointer for a 3-address 1071 * frame format but don't reference fields past outside 1072 * ieee80211_frame_min w/o first validating the data is 1073 * present. 1074 */ 1075 wh = mtod(m, struct ieee80211_frame *); 1076 1077 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1078 IEEE80211_FC0_VERSION_0) { 1079 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1080 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1081 vap->iv_stats.is_rx_badversion++; 1082 goto err; 1083 } 1084 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1085 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1086 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1087 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1088 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1089 ni->ni_noise = nf; 1090 if (HAS_SEQ(type)) { 1091 uint8_t tid = ieee80211_gettid(wh); 1092 1093 if (IEEE80211_QOS_HAS_SEQ(wh) && 1094 TID_TO_WME_AC(tid) >= WME_AC_VI) 1095 ic->ic_wme.wme_hipri_traffic++; 1096 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1097 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1098 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1099 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1100 /* duplicate, discard */ 1101 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1102 wh->i_addr1, "duplicate", 1103 "seqno <%u,%u> fragno <%u,%u> tid %u", 1104 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1105 ni->ni_rxseqs[tid] >> 1106 IEEE80211_SEQ_SEQ_SHIFT, 1107 rxseq & IEEE80211_SEQ_FRAG_MASK, 1108 ni->ni_rxseqs[tid] & 1109 IEEE80211_SEQ_FRAG_MASK, 1110 tid); 1111 vap->iv_stats.is_rx_dup++; 1112 IEEE80211_NODE_STAT(ni, rx_dup); 1113 goto out; 1114 } 1115 ni->ni_rxseqs[tid] = rxseq; 1116 } 1117 } 1118#ifdef IEEE80211_DEBUG 1119 /* 1120 * It's easier, but too expensive, to simulate different mesh 1121 * topologies by consulting the ACL policy very early, so do this 1122 * only under DEBUG. 1123 * 1124 * NB: this check is also done upon peering link initiation. 1125 */ 1126 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1127 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1128 wh, NULL, "%s", "disallowed by ACL"); 1129 vap->iv_stats.is_rx_acl++; 1130 goto out; 1131 } 1132#endif 1133 switch (type) { 1134 case IEEE80211_FC0_TYPE_DATA: 1135 if (ni == vap->iv_bss) 1136 goto out; 1137 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1138 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1139 ni->ni_macaddr, NULL, 1140 "peer link not yet established (%d)", 1141 ni->ni_mlstate); 1142 vap->iv_stats.is_mesh_nolink++; 1143 goto out; 1144 } 1145 if (dir != IEEE80211_FC1_DIR_FROMDS && 1146 dir != IEEE80211_FC1_DIR_DSTODS) { 1147 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1148 wh, "data", "incorrect dir 0x%x", dir); 1149 vap->iv_stats.is_rx_wrongdir++; 1150 goto err; 1151 } 1152 /* pull up enough to get to the mesh control */ 1153 hdrspace = ieee80211_hdrspace(ic, wh); 1154 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1155 (m = m_pullup(m, hdrspace + 1156 sizeof(struct ieee80211_meshcntl))) == NULL) { 1157 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1158 ni->ni_macaddr, NULL, 1159 "data too short: expecting %u", hdrspace); 1160 vap->iv_stats.is_rx_tooshort++; 1161 goto out; /* XXX */ 1162 } 1163 /* 1164 * Now calculate the full extent of the headers. Note 1165 * mesh_decap will pull up anything we didn't get 1166 * above when it strips the 802.11 headers. 1167 */ 1168 mc = (const struct ieee80211_meshcntl *) 1169 (mtod(m, const uint8_t *) + hdrspace); 1170 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1171 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1172 hdrspace += meshdrlen; 1173 seq = LE_READ_4(mc->mc_seq); 1174 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1175 addr = wh->i_addr3; 1176 else 1177 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1178 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1179 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1180 addr, "data", "%s", "not to me"); 1181 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1182 goto out; 1183 } 1184 if (mesh_checkpseq(vap, addr, seq) != 0) { 1185 vap->iv_stats.is_rx_dup++; 1186 goto out; 1187 } 1188 1189 /* 1190 * Potentially forward packet. See table s36 (p140) 1191 * for the rules. XXX tap fwd'd packets not for us? 1192 */ 1193 if (dir == IEEE80211_FC1_DIR_FROMDS || 1194 !mesh_isucastforme(vap, wh, mc)) { 1195 mesh_forward(vap, m, mc); 1196 if (dir == IEEE80211_FC1_DIR_DSTODS) 1197 goto out; 1198 /* NB: fall thru to deliver mcast frames locally */ 1199 } 1200 1201 /* 1202 * Save QoS bits for use below--before we strip the header. 1203 */ 1204 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1205 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1206 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1207 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1208 } else 1209 qos = 0; 1210 /* 1211 * Next up, any fragmentation. 1212 */ 1213 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1214 m = ieee80211_defrag(ni, m, hdrspace); 1215 if (m == NULL) { 1216 /* Fragment dropped or frame not complete yet */ 1217 goto out; 1218 } 1219 } 1220 wh = NULL; /* no longer valid, catch any uses */ 1221 1222 if (ieee80211_radiotap_active_vap(vap)) 1223 ieee80211_radiotap_rx(vap, m); 1224 need_tap = 0; 1225 1226 /* 1227 * Finally, strip the 802.11 header. 1228 */ 1229 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1230 if (m == NULL) { 1231 /* XXX mask bit to check for both */ 1232 /* don't count Null data frames as errors */ 1233 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1234 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1235 goto out; 1236 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1237 ni->ni_macaddr, "data", "%s", "decap error"); 1238 vap->iv_stats.is_rx_decap++; 1239 IEEE80211_NODE_STAT(ni, rx_decap); 1240 goto err; 1241 } 1242 if (qos & IEEE80211_QOS_AMSDU) { 1243 m = ieee80211_decap_amsdu(ni, m); 1244 if (m == NULL) 1245 return IEEE80211_FC0_TYPE_DATA; 1246 } 1247 ieee80211_deliver_data(vap, ni, m); 1248 return type; 1249 case IEEE80211_FC0_TYPE_MGT: 1250 vap->iv_stats.is_rx_mgmt++; 1251 IEEE80211_NODE_STAT(ni, rx_mgmt); 1252 if (dir != IEEE80211_FC1_DIR_NODS) { 1253 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1254 wh, "mgt", "incorrect dir 0x%x", dir); 1255 vap->iv_stats.is_rx_wrongdir++; 1256 goto err; 1257 } 1258 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1259 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1260 ni->ni_macaddr, "mgt", "too short: len %u", 1261 m->m_pkthdr.len); 1262 vap->iv_stats.is_rx_tooshort++; 1263 goto out; 1264 } 1265#ifdef IEEE80211_DEBUG 1266 if ((ieee80211_msg_debug(vap) && 1267 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1268 ieee80211_msg_dumppkts(vap)) { 1269 if_printf(ifp, "received %s from %s rssi %d\n", 1270 ieee80211_mgt_subtype_name[subtype >> 1271 IEEE80211_FC0_SUBTYPE_SHIFT], 1272 ether_sprintf(wh->i_addr2), rssi); 1273 } 1274#endif 1275 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1276 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1277 wh, NULL, "%s", "WEP set but not permitted"); 1278 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1279 goto out; 1280 } 1281 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1282 goto out; 1283 case IEEE80211_FC0_TYPE_CTL: 1284 vap->iv_stats.is_rx_ctl++; 1285 IEEE80211_NODE_STAT(ni, rx_ctrl); 1286 goto out; 1287 default: 1288 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1289 wh, "bad", "frame type 0x%x", type); 1290 /* should not come here */ 1291 break; 1292 } 1293err: 1294 ifp->if_ierrors++; 1295out: 1296 if (m != NULL) { 1297 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1298 ieee80211_radiotap_rx(vap, m); 1299 m_freem(m); 1300 } 1301 return type; 1302} 1303 1304static void 1305mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1306 int rssi, int nf) 1307{ 1308 struct ieee80211vap *vap = ni->ni_vap; 1309 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1310 struct ieee80211com *ic = ni->ni_ic; 1311 struct ieee80211_frame *wh; 1312 uint8_t *frm, *efrm; 1313 1314 wh = mtod(m0, struct ieee80211_frame *); 1315 frm = (uint8_t *)&wh[1]; 1316 efrm = mtod(m0, uint8_t *) + m0->m_len; 1317 switch (subtype) { 1318 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1319 case IEEE80211_FC0_SUBTYPE_BEACON: 1320 { 1321 struct ieee80211_scanparams scan; 1322 /* 1323 * We process beacon/probe response 1324 * frames to discover neighbors. 1325 */ 1326 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1327 return; 1328 /* 1329 * Count frame now that we know it's to be processed. 1330 */ 1331 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1332 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1333 IEEE80211_NODE_STAT(ni, rx_beacons); 1334 } else 1335 IEEE80211_NODE_STAT(ni, rx_proberesp); 1336 /* 1337 * If scanning, just pass information to the scan module. 1338 */ 1339 if (ic->ic_flags & IEEE80211_F_SCAN) { 1340 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1341 /* 1342 * Actively scanning a channel marked passive; 1343 * send a probe request now that we know there 1344 * is 802.11 traffic present. 1345 * 1346 * XXX check if the beacon we recv'd gives 1347 * us what we need and suppress the probe req 1348 */ 1349 ieee80211_probe_curchan(vap, 1); 1350 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1351 } 1352 ieee80211_add_scan(vap, &scan, wh, 1353 subtype, rssi, nf); 1354 return; 1355 } 1356 1357 /* The rest of this code assumes we are running */ 1358 if (vap->iv_state != IEEE80211_S_RUN) 1359 return; 1360 /* 1361 * Ignore non-mesh STAs. 1362 */ 1363 if ((scan.capinfo & 1364 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1365 scan.meshid == NULL || scan.meshconf == NULL) { 1366 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1367 wh, "beacon", "%s", "not a mesh sta"); 1368 vap->iv_stats.is_mesh_wrongmesh++; 1369 return; 1370 } 1371 /* 1372 * Ignore STAs for other mesh networks. 1373 */ 1374 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1375 mesh_verify_meshconf(vap, scan.meshconf)) { 1376 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1377 wh, "beacon", "%s", "not for our mesh"); 1378 vap->iv_stats.is_mesh_wrongmesh++; 1379 return; 1380 } 1381 /* 1382 * Peer only based on the current ACL policy. 1383 */ 1384 if (vap->iv_acl != NULL && 1385 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1386 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1387 wh, NULL, "%s", "disallowed by ACL"); 1388 vap->iv_stats.is_rx_acl++; 1389 return; 1390 } 1391 /* 1392 * Do neighbor discovery. 1393 */ 1394 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1395 /* 1396 * Create a new entry in the neighbor table. 1397 */ 1398 ni = ieee80211_add_neighbor(vap, wh, &scan); 1399 } 1400 /* 1401 * Automatically peer with discovered nodes if possible. 1402 * XXX backoff on repeated failure 1403 */ 1404 if (ni != vap->iv_bss && 1405 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1406 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1407 uint16_t args[1]; 1408 1409 ni->ni_mlpid = mesh_generateid(vap); 1410 if (ni->ni_mlpid == 0) 1411 return; 1412 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1413 args[0] = ni->ni_mlpid; 1414 ieee80211_send_action(ni, 1415 IEEE80211_ACTION_CAT_MESHPEERING, 1416 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1417 ni->ni_mlrcnt = 0; 1418 mesh_peer_timeout_setup(ni); 1419 } 1420 break; 1421 } 1422 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1423 { 1424 uint8_t *ssid, *meshid, *rates, *xrates; 1425 uint8_t *sfrm; 1426 1427 if (vap->iv_state != IEEE80211_S_RUN) { 1428 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1429 wh, NULL, "wrong state %s", 1430 ieee80211_state_name[vap->iv_state]); 1431 vap->iv_stats.is_rx_mgtdiscard++; 1432 return; 1433 } 1434 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1435 /* frame must be directed */ 1436 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1437 wh, NULL, "%s", "not unicast"); 1438 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1439 return; 1440 } 1441 /* 1442 * prreq frame format 1443 * [tlv] ssid 1444 * [tlv] supported rates 1445 * [tlv] extended supported rates 1446 * [tlv] mesh id 1447 */ 1448 ssid = meshid = rates = xrates = NULL; 1449 sfrm = frm; 1450 while (efrm - frm > 1) { 1451 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1452 switch (*frm) { 1453 case IEEE80211_ELEMID_SSID: 1454 ssid = frm; 1455 break; 1456 case IEEE80211_ELEMID_RATES: 1457 rates = frm; 1458 break; 1459 case IEEE80211_ELEMID_XRATES: 1460 xrates = frm; 1461 break; 1462 case IEEE80211_ELEMID_MESHID: 1463 meshid = frm; 1464 break; 1465 } 1466 frm += frm[2] + 2; 1467 } 1468 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1469 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1470 if (xrates != NULL) 1471 IEEE80211_VERIFY_ELEMENT(xrates, 1472 IEEE80211_RATE_MAXSIZE - rates[1], return); 1473 if (meshid != NULL) 1474 IEEE80211_VERIFY_ELEMENT(meshid, 1475 IEEE80211_MESHID_LEN, return); 1476 /* NB: meshid, not ssid */ 1477 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1478 1479 /* XXX find a better class or define it's own */ 1480 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1481 "%s", "recv probe req"); 1482 /* 1483 * Some legacy 11b clients cannot hack a complete 1484 * probe response frame. When the request includes 1485 * only a bare-bones rate set, communicate this to 1486 * the transmit side. 1487 */ 1488 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1489 break; 1490 } 1491 case IEEE80211_FC0_SUBTYPE_ACTION: 1492 if (vap->iv_state != IEEE80211_S_RUN) { 1493 vap->iv_stats.is_rx_mgtdiscard++; 1494 break; 1495 } 1496 /* 1497 * We received an action for an unknown neighbor. 1498 * XXX: wait for it to beacon or create ieee80211_node? 1499 */ 1500 if (ni == vap->iv_bss) { 1501 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1502 wh, NULL, "%s", "unknown node"); 1503 vap->iv_stats.is_rx_mgtdiscard++; 1504 break; 1505 } 1506 /* 1507 * Discard if not for us. 1508 */ 1509 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1510 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1511 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1512 wh, NULL, "%s", "not for me"); 1513 vap->iv_stats.is_rx_mgtdiscard++; 1514 break; 1515 } 1516 /* XXX parse_action is a bit useless now */ 1517 if (ieee80211_parse_action(ni, m0) == 0) 1518 ic->ic_recv_action(ni, wh, frm, efrm); 1519 break; 1520 case IEEE80211_FC0_SUBTYPE_AUTH: 1521 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1522 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1523 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1524 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1525 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1526 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1527 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1528 wh, NULL, "%s", "not handled"); 1529 vap->iv_stats.is_rx_mgtdiscard++; 1530 return; 1531 default: 1532 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1533 wh, "mgt", "subtype 0x%x not handled", subtype); 1534 vap->iv_stats.is_rx_badsubtype++; 1535 break; 1536 } 1537} 1538 1539/* 1540 * Parse meshpeering action ie's for open+confirm frames; the 1541 * important bits are returned in the supplied structure. 1542 */ 1543static const struct ieee80211_meshpeer_ie * 1544mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1545 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1546 const uint8_t *frm, const uint8_t *efrm, 1547 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1548{ 1549 struct ieee80211vap *vap = ni->ni_vap; 1550 const struct ieee80211_meshpeer_ie *mpie; 1551 const uint8_t *meshid, *meshconf, *meshpeer; 1552 1553 meshid = meshconf = meshpeer = NULL; 1554 while (efrm - frm > 1) { 1555 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1556 switch (*frm) { 1557 case IEEE80211_ELEMID_MESHID: 1558 meshid = frm; 1559 break; 1560 case IEEE80211_ELEMID_MESHCONF: 1561 meshconf = frm; 1562 break; 1563 case IEEE80211_ELEMID_MESHPEER: 1564 meshpeer = frm; 1565 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1566 memset(mp, 0, sizeof(*mp)); 1567 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1568 /* NB: peer link ID is optional on these frames */ 1569 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1570 mpie->peer_len == 8) { 1571 mp->peer_linkid = 0; 1572 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1573 } else { 1574 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1575 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1576 } 1577 break; 1578 } 1579 frm += frm[1] + 2; 1580 } 1581 1582 /* 1583 * Verify the contents of the frame. Action frames with 1584 * close subtype don't have a Mesh Configuration IE. 1585 * If if fails validation, close the peer link. 1586 */ 1587 KASSERT(meshpeer != NULL && 1588 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1589 ("parsing close action")); 1590 1591 if (mesh_verify_meshid(vap, meshid) || 1592 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1593 mesh_verify_meshconf(vap, meshconf)) { 1594 uint16_t args[3]; 1595 1596 IEEE80211_DISCARD(vap, 1597 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1598 wh, NULL, "%s", "not for our mesh"); 1599 vap->iv_stats.is_rx_mgtdiscard++; 1600 switch (ni->ni_mlstate) { 1601 case IEEE80211_NODE_MESH_IDLE: 1602 case IEEE80211_NODE_MESH_ESTABLISHED: 1603 case IEEE80211_NODE_MESH_HOLDING: 1604 /* ignore */ 1605 break; 1606 case IEEE80211_NODE_MESH_OPENSNT: 1607 case IEEE80211_NODE_MESH_OPENRCV: 1608 case IEEE80211_NODE_MESH_CONFIRMRCV: 1609 args[0] = ni->ni_mlpid; 1610 args[1] = ni->ni_mllid; 1611 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1612 ieee80211_send_action(ni, 1613 IEEE80211_ACTION_CAT_MESHPEERING, 1614 IEEE80211_ACTION_MESHPEERING_CLOSE, 1615 args); 1616 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1617 mesh_peer_timeout_setup(ni); 1618 break; 1619 } 1620 return NULL; 1621 } 1622 return (const struct ieee80211_meshpeer_ie *) mp; 1623} 1624 1625static int 1626mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1627 const struct ieee80211_frame *wh, 1628 const uint8_t *frm, const uint8_t *efrm) 1629{ 1630 struct ieee80211vap *vap = ni->ni_vap; 1631 struct ieee80211_meshpeer_ie ie; 1632 const struct ieee80211_meshpeer_ie *meshpeer; 1633 uint16_t args[3]; 1634 1635 /* +2+2 for action + code + capabilites */ 1636 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1637 IEEE80211_ACTION_MESHPEERING_OPEN); 1638 if (meshpeer == NULL) { 1639 return 0; 1640 } 1641 1642 /* XXX move up */ 1643 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1644 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1645 1646 switch (ni->ni_mlstate) { 1647 case IEEE80211_NODE_MESH_IDLE: 1648 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1649 ni->ni_mllid = meshpeer->peer_llinkid; 1650 ni->ni_mlpid = mesh_generateid(vap); 1651 if (ni->ni_mlpid == 0) 1652 return 0; /* XXX */ 1653 args[0] = ni->ni_mlpid; 1654 /* Announce we're open too... */ 1655 ieee80211_send_action(ni, 1656 IEEE80211_ACTION_CAT_MESHPEERING, 1657 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1658 /* ...and confirm the link. */ 1659 args[0] = ni->ni_mlpid; 1660 args[1] = ni->ni_mllid; 1661 ieee80211_send_action(ni, 1662 IEEE80211_ACTION_CAT_MESHPEERING, 1663 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1664 args); 1665 mesh_peer_timeout_setup(ni); 1666 break; 1667 case IEEE80211_NODE_MESH_OPENRCV: 1668 /* Wrong Link ID */ 1669 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1670 args[0] = ni->ni_mllid; 1671 args[1] = ni->ni_mlpid; 1672 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1673 ieee80211_send_action(ni, 1674 IEEE80211_ACTION_CAT_MESHPEERING, 1675 IEEE80211_ACTION_MESHPEERING_CLOSE, 1676 args); 1677 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1678 mesh_peer_timeout_setup(ni); 1679 break; 1680 } 1681 /* Duplicate open, confirm again. */ 1682 args[0] = ni->ni_mlpid; 1683 args[1] = ni->ni_mllid; 1684 ieee80211_send_action(ni, 1685 IEEE80211_ACTION_CAT_MESHPEERING, 1686 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1687 args); 1688 break; 1689 case IEEE80211_NODE_MESH_OPENSNT: 1690 ni->ni_mllid = meshpeer->peer_llinkid; 1691 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1692 args[0] = ni->ni_mlpid; 1693 args[1] = ni->ni_mllid; 1694 ieee80211_send_action(ni, 1695 IEEE80211_ACTION_CAT_MESHPEERING, 1696 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1697 args); 1698 /* NB: don't setup/clear any timeout */ 1699 break; 1700 case IEEE80211_NODE_MESH_CONFIRMRCV: 1701 if (ni->ni_mlpid != meshpeer->peer_linkid || 1702 ni->ni_mllid != meshpeer->peer_llinkid) { 1703 args[0] = ni->ni_mlpid; 1704 args[1] = ni->ni_mllid; 1705 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1706 ieee80211_send_action(ni, 1707 IEEE80211_ACTION_CAT_MESHPEERING, 1708 IEEE80211_ACTION_MESHPEERING_CLOSE, 1709 args); 1710 mesh_linkchange(ni, 1711 IEEE80211_NODE_MESH_HOLDING); 1712 mesh_peer_timeout_setup(ni); 1713 break; 1714 } 1715 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1716 ni->ni_mllid = meshpeer->peer_llinkid; 1717 args[0] = ni->ni_mlpid; 1718 args[1] = ni->ni_mllid; 1719 ieee80211_send_action(ni, 1720 IEEE80211_ACTION_CAT_MESHPEERING, 1721 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1722 args); 1723 mesh_peer_timeout_stop(ni); 1724 break; 1725 case IEEE80211_NODE_MESH_ESTABLISHED: 1726 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1727 args[0] = ni->ni_mllid; 1728 args[1] = ni->ni_mlpid; 1729 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1730 ieee80211_send_action(ni, 1731 IEEE80211_ACTION_CAT_MESHPEERING, 1732 IEEE80211_ACTION_MESHPEERING_CLOSE, 1733 args); 1734 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1735 mesh_peer_timeout_setup(ni); 1736 break; 1737 } 1738 args[0] = ni->ni_mlpid; 1739 args[1] = ni->ni_mllid; 1740 ieee80211_send_action(ni, 1741 IEEE80211_ACTION_CAT_MESHPEERING, 1742 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1743 args); 1744 break; 1745 case IEEE80211_NODE_MESH_HOLDING: 1746 args[0] = ni->ni_mlpid; 1747 args[1] = meshpeer->peer_llinkid; 1748 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1749 ieee80211_send_action(ni, 1750 IEEE80211_ACTION_CAT_MESHPEERING, 1751 IEEE80211_ACTION_MESHPEERING_CLOSE, 1752 args); 1753 break; 1754 } 1755 return 0; 1756} 1757 1758static int 1759mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1760 const struct ieee80211_frame *wh, 1761 const uint8_t *frm, const uint8_t *efrm) 1762{ 1763 struct ieee80211vap *vap = ni->ni_vap; 1764 struct ieee80211_meshpeer_ie ie; 1765 const struct ieee80211_meshpeer_ie *meshpeer; 1766 uint16_t args[3]; 1767 1768 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1769 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1770 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1771 if (meshpeer == NULL) { 1772 return 0; 1773 } 1774 1775 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1776 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1777 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1778 1779 switch (ni->ni_mlstate) { 1780 case IEEE80211_NODE_MESH_OPENRCV: 1781 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1782 mesh_peer_timeout_stop(ni); 1783 break; 1784 case IEEE80211_NODE_MESH_OPENSNT: 1785 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1786 break; 1787 case IEEE80211_NODE_MESH_HOLDING: 1788 args[0] = ni->ni_mlpid; 1789 args[1] = meshpeer->peer_llinkid; 1790 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1791 ieee80211_send_action(ni, 1792 IEEE80211_ACTION_CAT_MESHPEERING, 1793 IEEE80211_ACTION_MESHPEERING_CLOSE, 1794 args); 1795 break; 1796 case IEEE80211_NODE_MESH_CONFIRMRCV: 1797 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1798 args[0] = ni->ni_mlpid; 1799 args[1] = ni->ni_mllid; 1800 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1801 ieee80211_send_action(ni, 1802 IEEE80211_ACTION_CAT_MESHPEERING, 1803 IEEE80211_ACTION_MESHPEERING_CLOSE, 1804 args); 1805 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1806 mesh_peer_timeout_setup(ni); 1807 } 1808 break; 1809 default: 1810 IEEE80211_DISCARD(vap, 1811 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1812 wh, NULL, "received confirm in invalid state %d", 1813 ni->ni_mlstate); 1814 vap->iv_stats.is_rx_mgtdiscard++; 1815 break; 1816 } 1817 return 0; 1818} 1819 1820static int 1821mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1822 const struct ieee80211_frame *wh, 1823 const uint8_t *frm, const uint8_t *efrm) 1824{ 1825 uint16_t args[3]; 1826 1827 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1828 ni, "%s", "recv PEER CLOSE"); 1829 1830 switch (ni->ni_mlstate) { 1831 case IEEE80211_NODE_MESH_IDLE: 1832 /* ignore */ 1833 break; 1834 case IEEE80211_NODE_MESH_OPENRCV: 1835 case IEEE80211_NODE_MESH_OPENSNT: 1836 case IEEE80211_NODE_MESH_CONFIRMRCV: 1837 case IEEE80211_NODE_MESH_ESTABLISHED: 1838 args[0] = ni->ni_mlpid; 1839 args[1] = ni->ni_mllid; 1840 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1841 ieee80211_send_action(ni, 1842 IEEE80211_ACTION_CAT_MESHPEERING, 1843 IEEE80211_ACTION_MESHPEERING_CLOSE, 1844 args); 1845 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1846 mesh_peer_timeout_setup(ni); 1847 break; 1848 case IEEE80211_NODE_MESH_HOLDING: 1849 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1850 mesh_peer_timeout_setup(ni); 1851 break; 1852 } 1853 return 0; 1854} 1855 1856/* 1857 * Link Metric handling. 1858 */ 1859static int 1860mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1861 const struct ieee80211_frame *wh, 1862 const uint8_t *frm, const uint8_t *efrm) 1863{ 1864 uint32_t metric; 1865 1866 metric = mesh_airtime_calc(ni); 1867 ieee80211_send_action(ni, 1868 IEEE80211_ACTION_CAT_MESHLMETRIC, 1869 IEEE80211_ACTION_MESHLMETRIC_REP, 1870 &metric); 1871 return 0; 1872} 1873 1874static int 1875mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1876 const struct ieee80211_frame *wh, 1877 const uint8_t *frm, const uint8_t *efrm) 1878{ 1879 return 0; 1880} 1881 1882static int 1883mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1884{ 1885 struct ieee80211_bpf_params params; 1886 1887 memset(¶ms, 0, sizeof(params)); 1888 params.ibp_pri = WME_AC_VO; 1889 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1890 /* XXX ucast/mcast */ 1891 params.ibp_try0 = ni->ni_txparms->maxretry; 1892 params.ibp_power = ni->ni_txpower; 1893 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1894 ¶ms); 1895} 1896 1897#define ADDSHORT(frm, v) do { \ 1898 frm[0] = (v) & 0xff; \ 1899 frm[1] = (v) >> 8; \ 1900 frm += 2; \ 1901} while (0) 1902#define ADDWORD(frm, v) do { \ 1903 frm[0] = (v) & 0xff; \ 1904 frm[1] = ((v) >> 8) & 0xff; \ 1905 frm[2] = ((v) >> 16) & 0xff; \ 1906 frm[3] = ((v) >> 24) & 0xff; \ 1907 frm += 4; \ 1908} while (0) 1909 1910static int 1911mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1912 int category, int action, void *args0) 1913{ 1914 struct ieee80211vap *vap = ni->ni_vap; 1915 struct ieee80211com *ic = ni->ni_ic; 1916 uint16_t *args = args0; 1917 const struct ieee80211_rateset *rs; 1918 struct mbuf *m; 1919 uint8_t *frm; 1920 1921 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1922 "send PEER OPEN action: localid 0x%x", args[0]); 1923 1924 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1925 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1926 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1927 ieee80211_ref_node(ni); 1928 1929 m = ieee80211_getmgtframe(&frm, 1930 ic->ic_headroom + sizeof(struct ieee80211_frame), 1931 sizeof(uint16_t) /* action+category */ 1932 + sizeof(uint16_t) /* capabilites */ 1933 + 2 + IEEE80211_RATE_SIZE 1934 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1935 + 2 + IEEE80211_MESHID_LEN 1936 + sizeof(struct ieee80211_meshconf_ie) 1937 + sizeof(struct ieee80211_meshpeer_ie) 1938 ); 1939 if (m != NULL) { 1940 /* 1941 * mesh peer open action frame format: 1942 * [1] category 1943 * [1] action 1944 * [2] capabilities 1945 * [tlv] rates 1946 * [tlv] xrates 1947 * [tlv] mesh id 1948 * [tlv] mesh conf 1949 * [tlv] mesh peer link mgmt 1950 */ 1951 *frm++ = category; 1952 *frm++ = action; 1953 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1954 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1955 frm = ieee80211_add_rates(frm, rs); 1956 frm = ieee80211_add_xrates(frm, rs); 1957 frm = ieee80211_add_meshid(frm, vap); 1958 frm = ieee80211_add_meshconf(frm, vap); 1959 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1960 args[0], 0, 0); 1961 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1962 return mesh_send_action(ni, m); 1963 } else { 1964 vap->iv_stats.is_tx_nobuf++; 1965 ieee80211_free_node(ni); 1966 return ENOMEM; 1967 } 1968} 1969 1970static int 1971mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1972 int category, int action, void *args0) 1973{ 1974 struct ieee80211vap *vap = ni->ni_vap; 1975 struct ieee80211com *ic = ni->ni_ic; 1976 uint16_t *args = args0; 1977 const struct ieee80211_rateset *rs; 1978 struct mbuf *m; 1979 uint8_t *frm; 1980 1981 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1982 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1983 args[0], args[1]); 1984 1985 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1986 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1987 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1988 ieee80211_ref_node(ni); 1989 1990 m = ieee80211_getmgtframe(&frm, 1991 ic->ic_headroom + sizeof(struct ieee80211_frame), 1992 sizeof(uint16_t) /* action+category */ 1993 + sizeof(uint16_t) /* capabilites */ 1994 + sizeof(uint16_t) /* status code */ 1995 + sizeof(uint16_t) /* AID */ 1996 + 2 + IEEE80211_RATE_SIZE 1997 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1998 + 2 + IEEE80211_MESHID_LEN 1999 + sizeof(struct ieee80211_meshconf_ie) 2000 + sizeof(struct ieee80211_meshpeer_ie) 2001 ); 2002 if (m != NULL) { 2003 /* 2004 * mesh peer confirm action frame format: 2005 * [1] category 2006 * [1] action 2007 * [2] capabilities 2008 * [2] status code 2009 * [2] association id (peer ID) 2010 * [tlv] rates 2011 * [tlv] xrates 2012 * [tlv] mesh id 2013 * [tlv] mesh conf 2014 * [tlv] mesh peer link mgmt 2015 */ 2016 *frm++ = category; 2017 *frm++ = action; 2018 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2019 ADDSHORT(frm, 0); /* status code */ 2020 ADDSHORT(frm, args[1]); /* AID */ 2021 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2022 frm = ieee80211_add_rates(frm, rs); 2023 frm = ieee80211_add_xrates(frm, rs); 2024 frm = ieee80211_add_meshid(frm, vap); 2025 frm = ieee80211_add_meshconf(frm, vap); 2026 frm = ieee80211_add_meshpeer(frm, 2027 IEEE80211_MESH_PEER_LINK_CONFIRM, 2028 args[0], args[1], 0); 2029 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2030 return mesh_send_action(ni, m); 2031 } else { 2032 vap->iv_stats.is_tx_nobuf++; 2033 ieee80211_free_node(ni); 2034 return ENOMEM; 2035 } 2036} 2037 2038static int 2039mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2040 int category, int action, void *args0) 2041{ 2042 struct ieee80211vap *vap = ni->ni_vap; 2043 struct ieee80211com *ic = ni->ni_ic; 2044 uint16_t *args = args0; 2045 struct mbuf *m; 2046 uint8_t *frm; 2047 2048 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2049 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2050 args[0], args[1], args[2]); 2051 2052 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2053 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2054 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2055 ieee80211_ref_node(ni); 2056 2057 m = ieee80211_getmgtframe(&frm, 2058 ic->ic_headroom + sizeof(struct ieee80211_frame), 2059 sizeof(uint16_t) /* action+category */ 2060 + sizeof(uint16_t) /* reason code */ 2061 + 2 + IEEE80211_MESHID_LEN 2062 + sizeof(struct ieee80211_meshpeer_ie) 2063 ); 2064 if (m != NULL) { 2065 /* 2066 * mesh peer close action frame format: 2067 * [1] category 2068 * [1] action 2069 * [2] reason code 2070 * [tlv] mesh id 2071 * [tlv] mesh peer link mgmt 2072 */ 2073 *frm++ = category; 2074 *frm++ = action; 2075 ADDSHORT(frm, args[2]); /* reason code */ 2076 frm = ieee80211_add_meshid(frm, vap); 2077 frm = ieee80211_add_meshpeer(frm, 2078 IEEE80211_MESH_PEER_LINK_CLOSE, 2079 args[0], args[1], args[2]); 2080 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2081 return mesh_send_action(ni, m); 2082 } else { 2083 vap->iv_stats.is_tx_nobuf++; 2084 ieee80211_free_node(ni); 2085 return ENOMEM; 2086 } 2087} 2088 2089static int 2090mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2091 int category, int action, void *arg0) 2092{ 2093 struct ieee80211vap *vap = ni->ni_vap; 2094 struct ieee80211com *ic = ni->ni_ic; 2095 struct mbuf *m; 2096 uint8_t *frm; 2097 2098 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2099 "%s", "send LINK METRIC REQUEST action"); 2100 2101 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2102 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2103 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2104 ieee80211_ref_node(ni); 2105 2106 m = ieee80211_getmgtframe(&frm, 2107 ic->ic_headroom + sizeof(struct ieee80211_frame), 2108 sizeof(uint16_t) /* action+category */ 2109 ); 2110 if (m != NULL) { 2111 /* 2112 * mesh link metric request 2113 * [1] category 2114 * [1] action 2115 */ 2116 *frm++ = category; 2117 *frm++ = action; 2118 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2119 return mesh_send_action(ni, m); 2120 } else { 2121 vap->iv_stats.is_tx_nobuf++; 2122 ieee80211_free_node(ni); 2123 return ENOMEM; 2124 } 2125} 2126 2127static int 2128mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2129 int category, int action, void *args0) 2130{ 2131 struct ieee80211vap *vap = ni->ni_vap; 2132 struct ieee80211com *ic = ni->ni_ic; 2133 uint32_t *metric = args0; 2134 struct mbuf *m; 2135 uint8_t *frm; 2136 2137 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2138 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2139 2140 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2141 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2142 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2143 ieee80211_ref_node(ni); 2144 2145 m = ieee80211_getmgtframe(&frm, 2146 ic->ic_headroom + sizeof(struct ieee80211_frame), 2147 sizeof(uint16_t) /* action+category */ 2148 + sizeof(struct ieee80211_meshlmetric_ie) 2149 ); 2150 if (m != NULL) { 2151 /* 2152 * mesh link metric reply 2153 * [1] category 2154 * [1] action 2155 * [tlv] mesh link metric 2156 */ 2157 *frm++ = category; 2158 *frm++ = action; 2159 frm = ieee80211_add_meshlmetric(frm, *metric); 2160 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2161 return mesh_send_action(ni, m); 2162 } else { 2163 vap->iv_stats.is_tx_nobuf++; 2164 ieee80211_free_node(ni); 2165 return ENOMEM; 2166 } 2167} 2168 2169static void 2170mesh_peer_timeout_setup(struct ieee80211_node *ni) 2171{ 2172 switch (ni->ni_mlstate) { 2173 case IEEE80211_NODE_MESH_HOLDING: 2174 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2175 break; 2176 case IEEE80211_NODE_MESH_CONFIRMRCV: 2177 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2178 break; 2179 case IEEE80211_NODE_MESH_IDLE: 2180 ni->ni_mltval = 0; 2181 break; 2182 default: 2183 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2184 break; 2185 } 2186 if (ni->ni_mltval) 2187 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2188 mesh_peer_timeout_cb, ni); 2189} 2190 2191/* 2192 * Same as above but backoffs timer statisically 50%. 2193 */ 2194static void 2195mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2196{ 2197 uint32_t r; 2198 2199 r = arc4random(); 2200 ni->ni_mltval += r % ni->ni_mltval; 2201 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2202 ni); 2203} 2204 2205static __inline void 2206mesh_peer_timeout_stop(struct ieee80211_node *ni) 2207{ 2208 callout_drain(&ni->ni_mltimer); 2209} 2210 2211/* 2212 * Mesh Peer Link Management FSM timeout handling. 2213 */ 2214static void 2215mesh_peer_timeout_cb(void *arg) 2216{ 2217 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2218 uint16_t args[3]; 2219 2220 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2221 ni, "mesh link timeout, state %d, retry counter %d", 2222 ni->ni_mlstate, ni->ni_mlrcnt); 2223 2224 switch (ni->ni_mlstate) { 2225 case IEEE80211_NODE_MESH_IDLE: 2226 case IEEE80211_NODE_MESH_ESTABLISHED: 2227 break; 2228 case IEEE80211_NODE_MESH_OPENSNT: 2229 case IEEE80211_NODE_MESH_OPENRCV: 2230 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2231 args[0] = ni->ni_mlpid; 2232 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2233 ieee80211_send_action(ni, 2234 IEEE80211_ACTION_CAT_MESHPEERING, 2235 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2236 ni->ni_mlrcnt = 0; 2237 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2238 mesh_peer_timeout_setup(ni); 2239 } else { 2240 args[0] = ni->ni_mlpid; 2241 ieee80211_send_action(ni, 2242 IEEE80211_ACTION_CAT_MESHPEERING, 2243 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2244 ni->ni_mlrcnt++; 2245 mesh_peer_timeout_backoff(ni); 2246 } 2247 break; 2248 case IEEE80211_NODE_MESH_CONFIRMRCV: 2249 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2250 args[0] = ni->ni_mlpid; 2251 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2252 ieee80211_send_action(ni, 2253 IEEE80211_ACTION_CAT_MESHPEERING, 2254 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2255 ni->ni_mlrcnt = 0; 2256 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2257 mesh_peer_timeout_setup(ni); 2258 } else { 2259 ni->ni_mlrcnt++; 2260 mesh_peer_timeout_setup(ni); 2261 } 2262 break; 2263 case IEEE80211_NODE_MESH_HOLDING: 2264 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2265 break; 2266 } 2267} 2268 2269static int 2270mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2271{ 2272 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2273 2274 if (ie == NULL || ie[1] != ms->ms_idlen) 2275 return 1; 2276 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2277} 2278 2279/* 2280 * Check if we are using the same algorithms for this mesh. 2281 */ 2282static int 2283mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2284{ 2285 static const uint8_t null[4] = IEEE80211_MESHCONF_NULL; 2286 const struct ieee80211_meshconf_ie *meshconf = 2287 (const struct ieee80211_meshconf_ie *) ie; 2288 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2289 2290 if (meshconf == NULL) 2291 return 1; 2292 if (meshconf->conf_ver != IEEE80211_MESHCONF_VERSION) { 2293 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2294 "wrong mesh conf version: %d\n", meshconf->conf_ver); 2295 return 1; 2296 } 2297 if (memcmp(meshconf->conf_pselid, ms->ms_ppath->mpp_ie, 4) != 0) { 2298 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2299 "unknown path selection algorithm: 0x%x%x%x%x\n", 2300 meshconf->conf_pselid[0], meshconf->conf_pselid[1], 2301 meshconf->conf_pselid[2], meshconf->conf_pselid[3]); 2302 return 1; 2303 } 2304 if (memcmp(meshconf->conf_pmetid, ms->ms_pmetric->mpm_ie, 4) != 0) { 2305 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2306 "unknown path metric algorithm: 0x%x%x%x%x\n", 2307 meshconf->conf_pmetid[0], meshconf->conf_pmetid[1], 2308 meshconf->conf_pmetid[2], meshconf->conf_pmetid[3]); 2309 return 1; 2310 } 2311 if (memcmp(meshconf->conf_ccid, null, 4) != 0) { 2312 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2313 "unknown congestion sig algorithm: 0x%x%x%x%x\n", 2314 meshconf->conf_ccid[0], meshconf->conf_ccid[1], 2315 meshconf->conf_ccid[2], meshconf->conf_ccid[3]); 2316 return 1; 2317 } 2318 if (memcmp(meshconf->conf_syncid, null, 4) != 0) { 2319 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2320 "unknown sync algorithm: 0x%x%x%x%x\n", 2321 meshconf->conf_syncid[0], meshconf->conf_syncid[1], 2322 meshconf->conf_syncid[2], meshconf->conf_syncid[3]); 2323 return 1; 2324 } 2325 if (memcmp(meshconf->conf_authid, null, 4) != 0) { 2326 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2327 "unknown auth auth algorithm: 0x%x%x%x%x\n", 2328 meshconf->conf_pselid[0], meshconf->conf_pselid[1], 2329 meshconf->conf_pselid[2], meshconf->conf_pselid[3]); 2330 return 1; 2331 } 2332 /* Not accepting peers */ 2333 if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) { 2334 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2335 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2336 return 1; 2337 } 2338 return 0; 2339} 2340 2341static int 2342mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2343 const uint8_t *ie) 2344{ 2345 const struct ieee80211_meshpeer_ie *meshpeer = 2346 (const struct ieee80211_meshpeer_ie *) ie; 2347 2348 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2349 meshpeer->peer_len > 10) 2350 return 1; 2351 switch (subtype) { 2352 case IEEE80211_MESH_PEER_LINK_OPEN: 2353 if (meshpeer->peer_len != 6) 2354 return 1; 2355 break; 2356 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2357 if (meshpeer->peer_len != 8) 2358 return 1; 2359 break; 2360 case IEEE80211_MESH_PEER_LINK_CLOSE: 2361 if (meshpeer->peer_len < 8) 2362 return 1; 2363 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2364 return 1; 2365 if (meshpeer->peer_rcode == 0) 2366 return 1; 2367 break; 2368 } 2369 return 0; 2370} 2371 2372/* 2373 * Add a Mesh ID IE to a frame. 2374 */ 2375uint8_t * 2376ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2377{ 2378 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2379 2380 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2381 2382 *frm++ = IEEE80211_ELEMID_MESHID; 2383 *frm++ = ms->ms_idlen; 2384 memcpy(frm, ms->ms_id, ms->ms_idlen); 2385 return frm + ms->ms_idlen; 2386} 2387 2388/* 2389 * Add a Mesh Configuration IE to a frame. 2390 * For now just use HWMP routing, Airtime link metric, Null Congestion 2391 * Signaling, Null Sync Protocol and Null Authentication. 2392 */ 2393uint8_t * 2394ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2395{ 2396 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2397 static const uint8_t null[4] = IEEE80211_MESHCONF_NULL; 2398 2399 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2400 2401 *frm++ = IEEE80211_ELEMID_MESHCONF; 2402 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2403 *frm++ = IEEE80211_MESHCONF_VERSION; 2404 memcpy(frm, ms->ms_ppath->mpp_ie, 4); /* path selection */ 2405 frm += 4; 2406 memcpy(frm, ms->ms_pmetric->mpm_ie, 4); /* link metric */ 2407 frm += 4; 2408 /* XXX null for now */ 2409 memcpy(frm, null, 4); /* congestion control */ 2410 frm += 4; 2411 memcpy(frm, null, 4); /* sync */ 2412 frm += 4; 2413 memcpy(frm, null, 4); /* auth */ 2414 frm += 4; 2415 /* NB: set the number of neighbors before the rest */ 2416 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2417 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2418 *frm |= IEEE80211_MESHCONF_FORM_MP; 2419 frm += 1; 2420 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2421 *frm |= IEEE80211_MESHCONF_CAP_AP; 2422 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2423 *frm |= IEEE80211_MESHCONF_CAP_FWRD; 2424 frm += 1; 2425 return frm; 2426} 2427 2428/* 2429 * Add a Mesh Peer Management IE to a frame. 2430 */ 2431uint8_t * 2432ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2433 uint16_t peerid, uint16_t reason) 2434{ 2435 /* XXX change for AH */ 2436 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2437 2438 KASSERT(localid != 0, ("localid == 0")); 2439 2440 *frm++ = IEEE80211_ELEMID_MESHPEER; 2441 switch (subtype) { 2442 case IEEE80211_MESH_PEER_LINK_OPEN: 2443 *frm++ = 6; /* length */ 2444 memcpy(frm, meshpeerproto, 4); 2445 frm += 4; 2446 ADDSHORT(frm, localid); /* local ID */ 2447 break; 2448 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2449 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2450 *frm++ = 8; /* length */ 2451 memcpy(frm, meshpeerproto, 4); 2452 frm += 4; 2453 ADDSHORT(frm, localid); /* local ID */ 2454 ADDSHORT(frm, peerid); /* peer ID */ 2455 break; 2456 case IEEE80211_MESH_PEER_LINK_CLOSE: 2457 if (peerid) 2458 *frm++ = 10; /* length */ 2459 else 2460 *frm++ = 8; /* length */ 2461 memcpy(frm, meshpeerproto, 4); 2462 frm += 4; 2463 ADDSHORT(frm, localid); /* local ID */ 2464 if (peerid) 2465 ADDSHORT(frm, peerid); /* peer ID */ 2466 ADDSHORT(frm, reason); 2467 break; 2468 } 2469 return frm; 2470} 2471 2472/* 2473 * Compute an Airtime Link Metric for the link with this node. 2474 * 2475 * Based on Draft 3.0 spec (11B.10, p.149). 2476 */ 2477/* 2478 * Max 802.11s overhead. 2479 */ 2480#define IEEE80211_MESH_MAXOVERHEAD \ 2481 (sizeof(struct ieee80211_qosframe_addr4) \ 2482 + sizeof(struct ieee80211_meshcntl_ae11) \ 2483 + sizeof(struct llc) \ 2484 + IEEE80211_ADDR_LEN \ 2485 + IEEE80211_WEP_IVLEN \ 2486 + IEEE80211_WEP_KIDLEN \ 2487 + IEEE80211_WEP_CRCLEN \ 2488 + IEEE80211_WEP_MICLEN \ 2489 + IEEE80211_CRC_LEN) 2490uint32_t 2491mesh_airtime_calc(struct ieee80211_node *ni) 2492{ 2493#define M_BITS 8 2494#define S_FACTOR (2 * M_BITS) 2495 struct ieee80211com *ic = ni->ni_ic; 2496 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2497 const static int nbits = 8192 << M_BITS; 2498 uint32_t overhead, rate, errrate; 2499 uint64_t res; 2500 2501 /* Time to transmit a frame */ 2502 rate = ni->ni_txrate; 2503 overhead = ieee80211_compute_duration(ic->ic_rt, 2504 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2505 /* Error rate in percentage */ 2506 /* XXX assuming small failures are ok */ 2507 errrate = (((ifp->if_oerrors + 2508 ifp->if_ierrors) / 100) << M_BITS) / 100; 2509 res = (overhead + (nbits / rate)) * 2510 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2511 2512 return (uint32_t)(res >> S_FACTOR); 2513#undef M_BITS 2514#undef S_FACTOR 2515} 2516 2517/* 2518 * Add a Mesh Link Metric report IE to a frame. 2519 */ 2520uint8_t * 2521ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2522{ 2523 *frm++ = IEEE80211_ELEMID_MESHLINK; 2524 *frm++ = 4; 2525 ADDWORD(frm, metric); 2526 return frm; 2527} 2528#undef ADDSHORT 2529#undef ADDWORD 2530 2531/* 2532 * Initialize any mesh-specific node state. 2533 */ 2534void 2535ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2536{ 2537 ni->ni_flags |= IEEE80211_NODE_QOS; 2538 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2539} 2540 2541/* 2542 * Cleanup any mesh-specific node state. 2543 */ 2544void 2545ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2546{ 2547 struct ieee80211vap *vap = ni->ni_vap; 2548 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2549 2550 callout_drain(&ni->ni_mltimer); 2551 /* NB: short-circuit callbacks after mesh_vdetach */ 2552 if (vap->iv_mesh != NULL) 2553 ms->ms_ppath->mpp_peerdown(ni); 2554} 2555 2556void 2557ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2558{ 2559 ni->ni_meshidlen = ie[1]; 2560 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2561} 2562 2563/* 2564 * Setup mesh-specific node state on neighbor discovery. 2565 */ 2566void 2567ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2568 const struct ieee80211_frame *wh, 2569 const struct ieee80211_scanparams *sp) 2570{ 2571 ieee80211_parse_meshid(ni, sp->meshid); 2572} 2573 2574static int 2575mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2576{ 2577 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2578 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2579 struct ieee80211_mesh_route *rt; 2580 struct ieee80211req_mesh_route *imr; 2581 size_t len, off; 2582 uint8_t *p; 2583 int error; 2584 2585 if (vap->iv_opmode != IEEE80211_M_MBSS) 2586 return ENOSYS; 2587 2588 error = 0; 2589 switch (ireq->i_type) { 2590 case IEEE80211_IOC_MESH_ID: 2591 ireq->i_len = ms->ms_idlen; 2592 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2593 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2594 break; 2595 case IEEE80211_IOC_MESH_AP: 2596 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2597 break; 2598 case IEEE80211_IOC_MESH_FWRD: 2599 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2600 break; 2601 case IEEE80211_IOC_MESH_TTL: 2602 ireq->i_val = ms->ms_ttl; 2603 break; 2604 case IEEE80211_IOC_MESH_RTCMD: 2605 switch (ireq->i_val) { 2606 case IEEE80211_MESH_RTCMD_LIST: 2607 len = 0; 2608 MESH_RT_LOCK(ms); 2609 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2610 len += sizeof(*imr); 2611 } 2612 MESH_RT_UNLOCK(ms); 2613 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2614 ireq->i_len = len; 2615 return ENOMEM; 2616 } 2617 ireq->i_len = len; 2618 /* XXX M_WAIT? */ 2619 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2620 if (p == NULL) 2621 return ENOMEM; 2622 off = 0; 2623 MESH_RT_LOCK(ms); 2624 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2625 if (off >= len) 2626 break; 2627 imr = (struct ieee80211req_mesh_route *) 2628 (p + off); 2629 imr->imr_flags = rt->rt_flags; 2630 IEEE80211_ADDR_COPY(imr->imr_dest, 2631 rt->rt_dest); 2632 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2633 rt->rt_nexthop); 2634 imr->imr_metric = rt->rt_metric; 2635 imr->imr_nhops = rt->rt_nhops; 2636 imr->imr_lifetime = rt->rt_lifetime; 2637 imr->imr_lastmseq = rt->rt_lastmseq; 2638 off += sizeof(*imr); 2639 } 2640 MESH_RT_UNLOCK(ms); 2641 error = copyout(p, (uint8_t *)ireq->i_data, 2642 ireq->i_len); 2643 free(p, M_TEMP); 2644 break; 2645 case IEEE80211_MESH_RTCMD_FLUSH: 2646 case IEEE80211_MESH_RTCMD_ADD: 2647 case IEEE80211_MESH_RTCMD_DELETE: 2648 return EINVAL; 2649 default: 2650 return ENOSYS; 2651 } 2652 break; 2653 case IEEE80211_IOC_MESH_PR_METRIC: 2654 len = strlen(ms->ms_pmetric->mpm_descr); 2655 if (ireq->i_len < len) 2656 return EINVAL; 2657 ireq->i_len = len; 2658 error = copyout(ms->ms_pmetric->mpm_descr, 2659 (uint8_t *)ireq->i_data, len); 2660 break; 2661 case IEEE80211_IOC_MESH_PR_PATH: 2662 len = strlen(ms->ms_ppath->mpp_descr); 2663 if (ireq->i_len < len) 2664 return EINVAL; 2665 ireq->i_len = len; 2666 error = copyout(ms->ms_ppath->mpp_descr, 2667 (uint8_t *)ireq->i_data, len); 2668 break; 2669 default: 2670 return ENOSYS; 2671 } 2672 2673 return error; 2674} 2675IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2676 2677static int 2678mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2679{ 2680 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2681 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2682 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2683 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2684 int error; 2685 2686 if (vap->iv_opmode != IEEE80211_M_MBSS) 2687 return ENOSYS; 2688 2689 error = 0; 2690 switch (ireq->i_type) { 2691 case IEEE80211_IOC_MESH_ID: 2692 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2693 return EINVAL; 2694 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2695 if (error != 0) 2696 break; 2697 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2698 ms->ms_idlen = ireq->i_len; 2699 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2700 error = ENETRESET; 2701 break; 2702 case IEEE80211_IOC_MESH_AP: 2703 if (ireq->i_val) 2704 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2705 else 2706 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2707 error = ENETRESET; 2708 break; 2709 case IEEE80211_IOC_MESH_FWRD: 2710 if (ireq->i_val) 2711 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2712 else 2713 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2714 break; 2715 case IEEE80211_IOC_MESH_TTL: 2716 ms->ms_ttl = (uint8_t) ireq->i_val; 2717 break; 2718 case IEEE80211_IOC_MESH_RTCMD: 2719 switch (ireq->i_val) { 2720 case IEEE80211_MESH_RTCMD_LIST: 2721 return EINVAL; 2722 case IEEE80211_MESH_RTCMD_FLUSH: 2723 ieee80211_mesh_rt_flush(vap); 2724 break; 2725 case IEEE80211_MESH_RTCMD_ADD: 2726 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2727 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2728 return EINVAL; 2729 error = copyin(ireq->i_data, &tmpaddr, 2730 IEEE80211_ADDR_LEN); 2731 if (error == 0) 2732 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2733 break; 2734 case IEEE80211_MESH_RTCMD_DELETE: 2735 ieee80211_mesh_rt_del(vap, ireq->i_data); 2736 break; 2737 default: 2738 return ENOSYS; 2739 } 2740 break; 2741 case IEEE80211_IOC_MESH_PR_METRIC: 2742 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2743 if (error == 0) { 2744 error = mesh_select_proto_metric(vap, tmpproto); 2745 if (error == 0) 2746 error = ENETRESET; 2747 } 2748 break; 2749 case IEEE80211_IOC_MESH_PR_PATH: 2750 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2751 if (error == 0) { 2752 error = mesh_select_proto_path(vap, tmpproto); 2753 if (error == 0) 2754 error = ENETRESET; 2755 } 2756 break; 2757 default: 2758 return ENOSYS; 2759 } 2760 return error; 2761} 2762IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2763