ieee80211_mesh.c revision 205277
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 205277 2010-03-18 11:06:38Z 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_recv_ctl(struct ieee80211_node *, struct mbuf *, int); 86static void mesh_peer_timeout_setup(struct ieee80211_node *); 87static void mesh_peer_timeout_backoff(struct ieee80211_node *); 88static void mesh_peer_timeout_cb(void *); 89static __inline void 90 mesh_peer_timeout_stop(struct ieee80211_node *); 91static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 92static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 93static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 94 const uint8_t *); 95uint32_t mesh_airtime_calc(struct ieee80211_node *); 96 97/* 98 * Timeout values come from the specification and are in milliseconds. 99 */ 100SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 101 "IEEE 802.11s parameters"); 102static int ieee80211_mesh_retrytimeout = -1; 103SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 104 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 105 "Retry timeout (msec)"); 106static int ieee80211_mesh_holdingtimeout = -1; 107SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 108 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 109 "Holding state timeout (msec)"); 110static int ieee80211_mesh_confirmtimeout = -1; 111SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 112 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 113 "Confirm state timeout (msec)"); 114static int ieee80211_mesh_maxretries = 2; 115SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 116 &ieee80211_mesh_maxretries, 0, 117 "Maximum retries during peer link establishment"); 118 119static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 120 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 121 122static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 123static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 124static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 125static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req; 126static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep; 127 128static ieee80211_send_action_func mesh_send_action_meshpeering_open; 129static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 130static ieee80211_send_action_func mesh_send_action_meshpeering_close; 131static ieee80211_send_action_func mesh_send_action_meshlink_request; 132static ieee80211_send_action_func mesh_send_action_meshlink_reply; 133 134static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 135 .mpm_descr = "AIRTIME", 136 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 137 .mpm_metric = mesh_airtime_calc, 138}; 139 140static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 141static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 142 143#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) 144#define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 145#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 146 147MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 148 149/* 150 * Helper functions to manipulate the Mesh routing table. 151 */ 152 153static struct ieee80211_mesh_route * 154mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 155 const uint8_t dest[IEEE80211_ADDR_LEN]) 156{ 157 struct ieee80211_mesh_route *rt; 158 159 MESH_RT_LOCK_ASSERT(ms); 160 161 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 162 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 163 return rt; 164 } 165 return NULL; 166} 167 168static struct ieee80211_mesh_route * 169mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 170 const uint8_t dest[IEEE80211_ADDR_LEN]) 171{ 172 struct ieee80211_mesh_route *rt; 173 174 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 175 ("%s: adding broadcast to the routing table", __func__)); 176 177 MESH_RT_LOCK_ASSERT(ms); 178 179 rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 180 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 181 if (rt != NULL) { 182 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 183 rt->rt_priv = (void *)ALIGN(&rt[1]); 184 rt->rt_crtime = ticks; 185 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 186 } 187 return rt; 188} 189 190struct ieee80211_mesh_route * 191ieee80211_mesh_rt_find(struct ieee80211vap *vap, 192 const uint8_t dest[IEEE80211_ADDR_LEN]) 193{ 194 struct ieee80211_mesh_state *ms = vap->iv_mesh; 195 struct ieee80211_mesh_route *rt; 196 197 MESH_RT_LOCK(ms); 198 rt = mesh_rt_find_locked(ms, dest); 199 MESH_RT_UNLOCK(ms); 200 return rt; 201} 202 203struct ieee80211_mesh_route * 204ieee80211_mesh_rt_add(struct ieee80211vap *vap, 205 const uint8_t dest[IEEE80211_ADDR_LEN]) 206{ 207 struct ieee80211_mesh_state *ms = vap->iv_mesh; 208 struct ieee80211_mesh_route *rt; 209 210 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 211 ("%s: duplicate entry in the routing table", __func__)); 212 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 213 ("%s: adding self to the routing table", __func__)); 214 215 MESH_RT_LOCK(ms); 216 rt = mesh_rt_add_locked(ms, dest); 217 MESH_RT_UNLOCK(ms); 218 return rt; 219} 220 221/* 222 * Add a proxy route (as needed) for the specified destination. 223 */ 224void 225ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 226 const uint8_t dest[IEEE80211_ADDR_LEN]) 227{ 228 struct ieee80211_mesh_state *ms = vap->iv_mesh; 229 struct ieee80211_mesh_route *rt; 230 231 MESH_RT_LOCK(ms); 232 rt = mesh_rt_find_locked(ms, dest); 233 if (rt == NULL) { 234 rt = mesh_rt_add_locked(ms, dest); 235 if (rt == NULL) { 236 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 237 "%s", "unable to add proxy entry"); 238 vap->iv_stats.is_mesh_rtaddfailed++; 239 } else { 240 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 241 "%s", "add proxy entry"); 242 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 243 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 244 | IEEE80211_MESHRT_FLAGS_PROXY; 245 } 246 /* XXX assert PROXY? */ 247 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 248 struct ieee80211com *ic = vap->iv_ic; 249 /* 250 * Fix existing entry created by received frames from 251 * stations that have some memory of dest. We also 252 * flush any frames held on the staging queue; delivering 253 * them is too much trouble right now. 254 */ 255 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 256 "%s", "fix proxy entry"); 257 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 258 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 259 | IEEE80211_MESHRT_FLAGS_PROXY; 260 /* XXX belongs in hwmp */ 261 ieee80211_ageq_drain_node(&ic->ic_stageq, 262 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 263 /* XXX stat? */ 264 } 265 MESH_RT_UNLOCK(ms); 266} 267 268static __inline void 269mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 270{ 271 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 272 free(rt, M_80211_MESH_RT); 273} 274 275void 276ieee80211_mesh_rt_del(struct ieee80211vap *vap, 277 const uint8_t dest[IEEE80211_ADDR_LEN]) 278{ 279 struct ieee80211_mesh_state *ms = vap->iv_mesh; 280 struct ieee80211_mesh_route *rt, *next; 281 282 MESH_RT_LOCK(ms); 283 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 284 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 285 mesh_rt_del(ms, rt); 286 MESH_RT_UNLOCK(ms); 287 return; 288 } 289 } 290 MESH_RT_UNLOCK(ms); 291} 292 293void 294ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 295{ 296 struct ieee80211_mesh_state *ms = vap->iv_mesh; 297 struct ieee80211_mesh_route *rt, *next; 298 299 if (ms == NULL) 300 return; 301 MESH_RT_LOCK(ms); 302 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 303 mesh_rt_del(ms, rt); 304 MESH_RT_UNLOCK(ms); 305} 306 307void 308ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 309 const uint8_t peer[IEEE80211_ADDR_LEN]) 310{ 311 struct ieee80211_mesh_state *ms = vap->iv_mesh; 312 struct ieee80211_mesh_route *rt, *next; 313 314 MESH_RT_LOCK(ms); 315 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 316 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 317 mesh_rt_del(ms, rt); 318 } 319 MESH_RT_UNLOCK(ms); 320} 321 322/* 323 * Flush expired routing entries, i.e. those in invalid state for 324 * some time. 325 */ 326static void 327mesh_rt_flush_invalid(struct ieee80211vap *vap) 328{ 329 struct ieee80211_mesh_state *ms = vap->iv_mesh; 330 struct ieee80211_mesh_route *rt, *next; 331 332 if (ms == NULL) 333 return; 334 MESH_RT_LOCK(ms); 335 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 336 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 337 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 338 mesh_rt_del(ms, rt); 339 } 340 MESH_RT_UNLOCK(ms); 341} 342 343#define N(a) (sizeof(a) / sizeof(a[0])) 344int 345ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 346{ 347 int i, firstempty = -1; 348 349 for (i = 0; i < N(mesh_proto_paths); i++) { 350 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 351 IEEE80211_MESH_PROTO_DSZ) == 0) 352 return EEXIST; 353 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 354 firstempty = i; 355 } 356 if (firstempty < 0) 357 return ENOSPC; 358 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 359 mesh_proto_paths[firstempty].mpp_active = 1; 360 return 0; 361} 362 363int 364ieee80211_mesh_register_proto_metric(const struct 365 ieee80211_mesh_proto_metric *mpm) 366{ 367 int i, firstempty = -1; 368 369 for (i = 0; i < N(mesh_proto_metrics); i++) { 370 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 371 IEEE80211_MESH_PROTO_DSZ) == 0) 372 return EEXIST; 373 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 374 firstempty = i; 375 } 376 if (firstempty < 0) 377 return ENOSPC; 378 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 379 mesh_proto_metrics[firstempty].mpm_active = 1; 380 return 0; 381} 382 383static int 384mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 385{ 386 struct ieee80211_mesh_state *ms = vap->iv_mesh; 387 int i; 388 389 for (i = 0; i < N(mesh_proto_paths); i++) { 390 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 391 ms->ms_ppath = &mesh_proto_paths[i]; 392 return 0; 393 } 394 } 395 return ENOENT; 396} 397 398static int 399mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 400{ 401 struct ieee80211_mesh_state *ms = vap->iv_mesh; 402 int i; 403 404 for (i = 0; i < N(mesh_proto_metrics); i++) { 405 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 406 ms->ms_pmetric = &mesh_proto_metrics[i]; 407 return 0; 408 } 409 } 410 return ENOENT; 411} 412#undef N 413 414static void 415ieee80211_mesh_init(void) 416{ 417 418 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 419 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 420 421 /* 422 * Setup mesh parameters that depends on the clock frequency. 423 */ 424 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 425 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 426 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 427 428 /* 429 * Register action frame handlers. 430 */ 431 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 432 IEEE80211_ACTION_MESHPEERING_OPEN, 433 mesh_recv_action_meshpeering_open); 434 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 435 IEEE80211_ACTION_MESHPEERING_CONFIRM, 436 mesh_recv_action_meshpeering_confirm); 437 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 438 IEEE80211_ACTION_MESHPEERING_CLOSE, 439 mesh_recv_action_meshpeering_close); 440 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 441 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 442 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 443 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 444 445 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 446 IEEE80211_ACTION_MESHPEERING_OPEN, 447 mesh_send_action_meshpeering_open); 448 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 449 IEEE80211_ACTION_MESHPEERING_CONFIRM, 450 mesh_send_action_meshpeering_confirm); 451 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 452 IEEE80211_ACTION_MESHPEERING_CLOSE, 453 mesh_send_action_meshpeering_close); 454 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 455 IEEE80211_ACTION_MESHLMETRIC_REQ, 456 mesh_send_action_meshlink_request); 457 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 458 IEEE80211_ACTION_MESHLMETRIC_REP, 459 mesh_send_action_meshlink_reply); 460 461 /* 462 * Register Airtime Link Metric. 463 */ 464 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 465 466} 467SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 468 469void 470ieee80211_mesh_attach(struct ieee80211com *ic) 471{ 472 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 473} 474 475void 476ieee80211_mesh_detach(struct ieee80211com *ic) 477{ 478} 479 480static void 481mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 482{ 483 struct ieee80211com *ic = ni->ni_ic; 484 uint16_t args[3]; 485 486 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 487 args[0] = ni->ni_mlpid; 488 args[1] = ni->ni_mllid; 489 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 490 ieee80211_send_action(ni, 491 IEEE80211_ACTION_CAT_MESHPEERING, 492 IEEE80211_ACTION_MESHPEERING_CLOSE, 493 args); 494 } 495 callout_drain(&ni->ni_mltimer); 496 /* XXX belongs in hwmp */ 497 ieee80211_ageq_drain_node(&ic->ic_stageq, 498 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 499} 500 501static void 502mesh_vdetach(struct ieee80211vap *vap) 503{ 504 struct ieee80211_mesh_state *ms = vap->iv_mesh; 505 506 callout_drain(&ms->ms_cleantimer); 507 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 508 NULL); 509 ieee80211_mesh_rt_flush(vap); 510 mtx_destroy(&ms->ms_rt_lock); 511 ms->ms_ppath->mpp_vdetach(vap); 512 free(vap->iv_mesh, M_80211_VAP); 513 vap->iv_mesh = NULL; 514} 515 516static void 517mesh_vattach(struct ieee80211vap *vap) 518{ 519 struct ieee80211_mesh_state *ms; 520 vap->iv_newstate = mesh_newstate; 521 vap->iv_input = mesh_input; 522 vap->iv_opdetach = mesh_vdetach; 523 vap->iv_recv_mgmt = mesh_recv_mgmt; 524 vap->iv_recv_ctl = mesh_recv_ctl; 525 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 526 M_NOWAIT | M_ZERO); 527 if (ms == NULL) { 528 printf("%s: couldn't alloc MBSS state\n", __func__); 529 return; 530 } 531 vap->iv_mesh = ms; 532 ms->ms_seq = 0; 533 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 534 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 535 TAILQ_INIT(&ms->ms_routes); 536 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 537 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 538 mesh_select_proto_metric(vap, "AIRTIME"); 539 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 540 mesh_select_proto_path(vap, "HWMP"); 541 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 542 ms->ms_ppath->mpp_vattach(vap); 543} 544 545/* 546 * IEEE80211_M_MBSS vap state machine handler. 547 */ 548static int 549mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 550{ 551 struct ieee80211_mesh_state *ms = vap->iv_mesh; 552 struct ieee80211com *ic = vap->iv_ic; 553 struct ieee80211_node *ni; 554 enum ieee80211_state ostate; 555 556 IEEE80211_LOCK_ASSERT(ic); 557 558 ostate = vap->iv_state; 559 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 560 __func__, ieee80211_state_name[ostate], 561 ieee80211_state_name[nstate], arg); 562 vap->iv_state = nstate; /* state transition */ 563 if (ostate != IEEE80211_S_SCAN) 564 ieee80211_cancel_scan(vap); /* background scan */ 565 ni = vap->iv_bss; /* NB: no reference held */ 566 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 567 callout_drain(&ms->ms_cleantimer); 568 switch (nstate) { 569 case IEEE80211_S_INIT: 570 switch (ostate) { 571 case IEEE80211_S_SCAN: 572 ieee80211_cancel_scan(vap); 573 break; 574 case IEEE80211_S_CAC: 575 ieee80211_dfs_cac_stop(vap); 576 break; 577 case IEEE80211_S_RUN: 578 ieee80211_iterate_nodes(&ic->ic_sta, 579 mesh_vdetach_peers, NULL); 580 break; 581 default: 582 break; 583 } 584 if (ostate != IEEE80211_S_INIT) { 585 /* NB: optimize INIT -> INIT case */ 586 ieee80211_reset_bss(vap); 587 ieee80211_mesh_rt_flush(vap); 588 } 589 break; 590 case IEEE80211_S_SCAN: 591 switch (ostate) { 592 case IEEE80211_S_INIT: 593 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 594 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 595 ms->ms_idlen != 0) { 596 /* 597 * Already have a channel and a mesh ID; bypass 598 * the scan and startup immediately. 599 */ 600 ieee80211_create_ibss(vap, vap->iv_des_chan); 601 break; 602 } 603 /* 604 * Initiate a scan. We can come here as a result 605 * of an IEEE80211_IOC_SCAN_REQ too in which case 606 * the vap will be marked with IEEE80211_FEXT_SCANREQ 607 * and the scan request parameters will be present 608 * in iv_scanreq. Otherwise we do the default. 609 */ 610 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 611 ieee80211_check_scan(vap, 612 vap->iv_scanreq_flags, 613 vap->iv_scanreq_duration, 614 vap->iv_scanreq_mindwell, 615 vap->iv_scanreq_maxdwell, 616 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 617 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 618 } else 619 ieee80211_check_scan_current(vap); 620 break; 621 default: 622 break; 623 } 624 break; 625 case IEEE80211_S_CAC: 626 /* 627 * Start CAC on a DFS channel. We come here when starting 628 * a bss on a DFS channel (see ieee80211_create_ibss). 629 */ 630 ieee80211_dfs_cac_start(vap); 631 break; 632 case IEEE80211_S_RUN: 633 switch (ostate) { 634 case IEEE80211_S_INIT: 635 /* 636 * Already have a channel; bypass the 637 * scan and startup immediately. 638 * Note that ieee80211_create_ibss will call 639 * back to do a RUN->RUN state change. 640 */ 641 ieee80211_create_ibss(vap, 642 ieee80211_ht_adjust_channel(ic, 643 ic->ic_curchan, vap->iv_flags_ht)); 644 /* NB: iv_bss is changed on return */ 645 break; 646 case IEEE80211_S_CAC: 647 /* 648 * NB: This is the normal state change when CAC 649 * expires and no radar was detected; no need to 650 * clear the CAC timer as it's already expired. 651 */ 652 /* fall thru... */ 653 case IEEE80211_S_CSA: 654#if 0 655 /* 656 * Shorten inactivity timer of associated stations 657 * to weed out sta's that don't follow a CSA. 658 */ 659 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 660#endif 661 /* 662 * Update bss node channel to reflect where 663 * we landed after CSA. 664 */ 665 ieee80211_node_set_chan(vap->iv_bss, 666 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 667 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 668 /* XXX bypass debug msgs */ 669 break; 670 case IEEE80211_S_SCAN: 671 case IEEE80211_S_RUN: 672#ifdef IEEE80211_DEBUG 673 if (ieee80211_msg_debug(vap)) { 674 struct ieee80211_node *ni = vap->iv_bss; 675 ieee80211_note(vap, 676 "synchronized with %s meshid ", 677 ether_sprintf(ni->ni_meshid)); 678 ieee80211_print_essid(ni->ni_meshid, 679 ni->ni_meshidlen); 680 /* XXX MCS/HT */ 681 printf(" channel %d\n", 682 ieee80211_chan2ieee(ic, ic->ic_curchan)); 683 } 684#endif 685 break; 686 default: 687 break; 688 } 689 ieee80211_node_authorize(vap->iv_bss); 690 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 691 mesh_rt_cleanup_cb, vap); 692 break; 693 default: 694 break; 695 } 696 /* NB: ostate not nstate */ 697 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 698 return 0; 699} 700 701static void 702mesh_rt_cleanup_cb(void *arg) 703{ 704 struct ieee80211vap *vap = arg; 705 struct ieee80211_mesh_state *ms = vap->iv_mesh; 706 707 mesh_rt_flush_invalid(vap); 708 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 709 mesh_rt_cleanup_cb, vap); 710} 711 712 713/* 714 * Helper function to note the Mesh Peer Link FSM change. 715 */ 716static void 717mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 718{ 719 struct ieee80211vap *vap = ni->ni_vap; 720 struct ieee80211_mesh_state *ms = vap->iv_mesh; 721#ifdef IEEE80211_DEBUG 722 static const char *meshlinkstates[] = { 723 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 724 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 725 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 726 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 727 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 728 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 729 }; 730#endif 731 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 732 ni, "peer link: %s -> %s", 733 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 734 735 /* track neighbor count */ 736 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 737 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 738 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 739 ms->ms_neighbors++; 740 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 741 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 742 state != IEEE80211_NODE_MESH_ESTABLISHED) { 743 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 744 ms->ms_neighbors--; 745 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 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 1480 /* XXX find a better class or define it's own */ 1481 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1482 "%s", "recv probe req"); 1483 /* 1484 * Some legacy 11b clients cannot hack a complete 1485 * probe response frame. When the request includes 1486 * only a bare-bones rate set, communicate this to 1487 * the transmit side. 1488 */ 1489 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1490 break; 1491 } 1492 case IEEE80211_FC0_SUBTYPE_ACTION: 1493 if (vap->iv_state != IEEE80211_S_RUN) { 1494 vap->iv_stats.is_rx_mgtdiscard++; 1495 break; 1496 } 1497 /* 1498 * We received an action for an unknown neighbor. 1499 * XXX: wait for it to beacon or create ieee80211_node? 1500 */ 1501 if (ni == vap->iv_bss) { 1502 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1503 wh, NULL, "%s", "unknown node"); 1504 vap->iv_stats.is_rx_mgtdiscard++; 1505 break; 1506 } 1507 /* 1508 * Discard if not for us. 1509 */ 1510 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1511 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1512 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1513 wh, NULL, "%s", "not for me"); 1514 vap->iv_stats.is_rx_mgtdiscard++; 1515 break; 1516 } 1517 /* XXX parse_action is a bit useless now */ 1518 if (ieee80211_parse_action(ni, m0) == 0) 1519 ic->ic_recv_action(ni, wh, frm, efrm); 1520 break; 1521 case IEEE80211_FC0_SUBTYPE_AUTH: 1522 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1523 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1524 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1525 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1526 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1527 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1528 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1529 wh, NULL, "%s", "not handled"); 1530 vap->iv_stats.is_rx_mgtdiscard++; 1531 return; 1532 default: 1533 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1534 wh, "mgt", "subtype 0x%x not handled", subtype); 1535 vap->iv_stats.is_rx_badsubtype++; 1536 break; 1537 } 1538} 1539 1540static void 1541mesh_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 1542{ 1543 1544 switch (subtype) { 1545 case IEEE80211_FC0_SUBTYPE_BAR: 1546 ieee80211_recv_bar(ni, m); 1547 break; 1548 } 1549} 1550 1551/* 1552 * Parse meshpeering action ie's for open+confirm frames; the 1553 * important bits are returned in the supplied structure. 1554 */ 1555static const struct ieee80211_meshpeer_ie * 1556mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1557 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1558 const uint8_t *frm, const uint8_t *efrm, 1559 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1560{ 1561 struct ieee80211vap *vap = ni->ni_vap; 1562 const struct ieee80211_meshpeer_ie *mpie; 1563 const uint8_t *meshid, *meshconf, *meshpeer; 1564 1565 meshid = meshconf = meshpeer = NULL; 1566 while (efrm - frm > 1) { 1567 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1568 switch (*frm) { 1569 case IEEE80211_ELEMID_MESHID: 1570 meshid = frm; 1571 break; 1572 case IEEE80211_ELEMID_MESHCONF: 1573 meshconf = frm; 1574 break; 1575 case IEEE80211_ELEMID_MESHPEER: 1576 meshpeer = frm; 1577 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1578 memset(mp, 0, sizeof(*mp)); 1579 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1580 /* NB: peer link ID is optional on these frames */ 1581 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1582 mpie->peer_len == 8) { 1583 mp->peer_linkid = 0; 1584 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1585 } else { 1586 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1587 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1588 } 1589 break; 1590 } 1591 frm += frm[1] + 2; 1592 } 1593 1594 /* 1595 * Verify the contents of the frame. Action frames with 1596 * close subtype don't have a Mesh Configuration IE. 1597 * If if fails validation, close the peer link. 1598 */ 1599 KASSERT(meshpeer != NULL && 1600 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1601 ("parsing close action")); 1602 1603 if (mesh_verify_meshid(vap, meshid) || 1604 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1605 mesh_verify_meshconf(vap, meshconf)) { 1606 uint16_t args[3]; 1607 1608 IEEE80211_DISCARD(vap, 1609 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1610 wh, NULL, "%s", "not for our mesh"); 1611 vap->iv_stats.is_rx_mgtdiscard++; 1612 switch (ni->ni_mlstate) { 1613 case IEEE80211_NODE_MESH_IDLE: 1614 case IEEE80211_NODE_MESH_ESTABLISHED: 1615 case IEEE80211_NODE_MESH_HOLDING: 1616 /* ignore */ 1617 break; 1618 case IEEE80211_NODE_MESH_OPENSNT: 1619 case IEEE80211_NODE_MESH_OPENRCV: 1620 case IEEE80211_NODE_MESH_CONFIRMRCV: 1621 args[0] = ni->ni_mlpid; 1622 args[1] = ni->ni_mllid; 1623 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1624 ieee80211_send_action(ni, 1625 IEEE80211_ACTION_CAT_MESHPEERING, 1626 IEEE80211_ACTION_MESHPEERING_CLOSE, 1627 args); 1628 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1629 mesh_peer_timeout_setup(ni); 1630 break; 1631 } 1632 return NULL; 1633 } 1634 return (const struct ieee80211_meshpeer_ie *) mp; 1635} 1636 1637static int 1638mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1639 const struct ieee80211_frame *wh, 1640 const uint8_t *frm, const uint8_t *efrm) 1641{ 1642 struct ieee80211vap *vap = ni->ni_vap; 1643 struct ieee80211_meshpeer_ie ie; 1644 const struct ieee80211_meshpeer_ie *meshpeer; 1645 uint16_t args[3]; 1646 1647 /* +2+2 for action + code + capabilites */ 1648 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1649 IEEE80211_ACTION_MESHPEERING_OPEN); 1650 if (meshpeer == NULL) { 1651 return 0; 1652 } 1653 1654 /* XXX move up */ 1655 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1656 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1657 1658 switch (ni->ni_mlstate) { 1659 case IEEE80211_NODE_MESH_IDLE: 1660 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1661 ni->ni_mllid = meshpeer->peer_llinkid; 1662 ni->ni_mlpid = mesh_generateid(vap); 1663 if (ni->ni_mlpid == 0) 1664 return 0; /* XXX */ 1665 args[0] = ni->ni_mlpid; 1666 /* Announce we're open too... */ 1667 ieee80211_send_action(ni, 1668 IEEE80211_ACTION_CAT_MESHPEERING, 1669 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1670 /* ...and confirm the link. */ 1671 args[0] = ni->ni_mlpid; 1672 args[1] = ni->ni_mllid; 1673 ieee80211_send_action(ni, 1674 IEEE80211_ACTION_CAT_MESHPEERING, 1675 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1676 args); 1677 mesh_peer_timeout_setup(ni); 1678 break; 1679 case IEEE80211_NODE_MESH_OPENRCV: 1680 /* Wrong Link ID */ 1681 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1682 args[0] = ni->ni_mllid; 1683 args[1] = ni->ni_mlpid; 1684 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1685 ieee80211_send_action(ni, 1686 IEEE80211_ACTION_CAT_MESHPEERING, 1687 IEEE80211_ACTION_MESHPEERING_CLOSE, 1688 args); 1689 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1690 mesh_peer_timeout_setup(ni); 1691 break; 1692 } 1693 /* Duplicate open, confirm again. */ 1694 args[0] = ni->ni_mlpid; 1695 args[1] = ni->ni_mllid; 1696 ieee80211_send_action(ni, 1697 IEEE80211_ACTION_CAT_MESHPEERING, 1698 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1699 args); 1700 break; 1701 case IEEE80211_NODE_MESH_OPENSNT: 1702 ni->ni_mllid = meshpeer->peer_llinkid; 1703 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1704 args[0] = ni->ni_mlpid; 1705 args[1] = ni->ni_mllid; 1706 ieee80211_send_action(ni, 1707 IEEE80211_ACTION_CAT_MESHPEERING, 1708 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1709 args); 1710 /* NB: don't setup/clear any timeout */ 1711 break; 1712 case IEEE80211_NODE_MESH_CONFIRMRCV: 1713 if (ni->ni_mlpid != meshpeer->peer_linkid || 1714 ni->ni_mllid != meshpeer->peer_llinkid) { 1715 args[0] = ni->ni_mlpid; 1716 args[1] = ni->ni_mllid; 1717 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1718 ieee80211_send_action(ni, 1719 IEEE80211_ACTION_CAT_MESHPEERING, 1720 IEEE80211_ACTION_MESHPEERING_CLOSE, 1721 args); 1722 mesh_linkchange(ni, 1723 IEEE80211_NODE_MESH_HOLDING); 1724 mesh_peer_timeout_setup(ni); 1725 break; 1726 } 1727 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1728 ni->ni_mllid = meshpeer->peer_llinkid; 1729 args[0] = ni->ni_mlpid; 1730 args[1] = ni->ni_mllid; 1731 ieee80211_send_action(ni, 1732 IEEE80211_ACTION_CAT_MESHPEERING, 1733 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1734 args); 1735 mesh_peer_timeout_stop(ni); 1736 break; 1737 case IEEE80211_NODE_MESH_ESTABLISHED: 1738 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1739 args[0] = ni->ni_mllid; 1740 args[1] = ni->ni_mlpid; 1741 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1742 ieee80211_send_action(ni, 1743 IEEE80211_ACTION_CAT_MESHPEERING, 1744 IEEE80211_ACTION_MESHPEERING_CLOSE, 1745 args); 1746 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1747 mesh_peer_timeout_setup(ni); 1748 break; 1749 } 1750 args[0] = ni->ni_mlpid; 1751 args[1] = ni->ni_mllid; 1752 ieee80211_send_action(ni, 1753 IEEE80211_ACTION_CAT_MESHPEERING, 1754 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1755 args); 1756 break; 1757 case IEEE80211_NODE_MESH_HOLDING: 1758 args[0] = ni->ni_mlpid; 1759 args[1] = meshpeer->peer_llinkid; 1760 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1761 ieee80211_send_action(ni, 1762 IEEE80211_ACTION_CAT_MESHPEERING, 1763 IEEE80211_ACTION_MESHPEERING_CLOSE, 1764 args); 1765 break; 1766 } 1767 return 0; 1768} 1769 1770static int 1771mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1772 const struct ieee80211_frame *wh, 1773 const uint8_t *frm, const uint8_t *efrm) 1774{ 1775 struct ieee80211vap *vap = ni->ni_vap; 1776 struct ieee80211_meshpeer_ie ie; 1777 const struct ieee80211_meshpeer_ie *meshpeer; 1778 uint16_t args[3]; 1779 1780 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1781 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1782 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1783 if (meshpeer == NULL) { 1784 return 0; 1785 } 1786 1787 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1788 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1789 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1790 1791 switch (ni->ni_mlstate) { 1792 case IEEE80211_NODE_MESH_OPENRCV: 1793 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1794 mesh_peer_timeout_stop(ni); 1795 break; 1796 case IEEE80211_NODE_MESH_OPENSNT: 1797 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1798 break; 1799 case IEEE80211_NODE_MESH_HOLDING: 1800 args[0] = ni->ni_mlpid; 1801 args[1] = meshpeer->peer_llinkid; 1802 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1803 ieee80211_send_action(ni, 1804 IEEE80211_ACTION_CAT_MESHPEERING, 1805 IEEE80211_ACTION_MESHPEERING_CLOSE, 1806 args); 1807 break; 1808 case IEEE80211_NODE_MESH_CONFIRMRCV: 1809 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1810 args[0] = ni->ni_mlpid; 1811 args[1] = ni->ni_mllid; 1812 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1813 ieee80211_send_action(ni, 1814 IEEE80211_ACTION_CAT_MESHPEERING, 1815 IEEE80211_ACTION_MESHPEERING_CLOSE, 1816 args); 1817 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1818 mesh_peer_timeout_setup(ni); 1819 } 1820 break; 1821 default: 1822 IEEE80211_DISCARD(vap, 1823 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1824 wh, NULL, "received confirm in invalid state %d", 1825 ni->ni_mlstate); 1826 vap->iv_stats.is_rx_mgtdiscard++; 1827 break; 1828 } 1829 return 0; 1830} 1831 1832static int 1833mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1834 const struct ieee80211_frame *wh, 1835 const uint8_t *frm, const uint8_t *efrm) 1836{ 1837 uint16_t args[3]; 1838 1839 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1840 ni, "%s", "recv PEER CLOSE"); 1841 1842 switch (ni->ni_mlstate) { 1843 case IEEE80211_NODE_MESH_IDLE: 1844 /* ignore */ 1845 break; 1846 case IEEE80211_NODE_MESH_OPENRCV: 1847 case IEEE80211_NODE_MESH_OPENSNT: 1848 case IEEE80211_NODE_MESH_CONFIRMRCV: 1849 case IEEE80211_NODE_MESH_ESTABLISHED: 1850 args[0] = ni->ni_mlpid; 1851 args[1] = ni->ni_mllid; 1852 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1853 ieee80211_send_action(ni, 1854 IEEE80211_ACTION_CAT_MESHPEERING, 1855 IEEE80211_ACTION_MESHPEERING_CLOSE, 1856 args); 1857 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1858 mesh_peer_timeout_setup(ni); 1859 break; 1860 case IEEE80211_NODE_MESH_HOLDING: 1861 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1862 mesh_peer_timeout_setup(ni); 1863 break; 1864 } 1865 return 0; 1866} 1867 1868/* 1869 * Link Metric handling. 1870 */ 1871static int 1872mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1873 const struct ieee80211_frame *wh, 1874 const uint8_t *frm, const uint8_t *efrm) 1875{ 1876 uint32_t metric; 1877 1878 metric = mesh_airtime_calc(ni); 1879 ieee80211_send_action(ni, 1880 IEEE80211_ACTION_CAT_MESHLMETRIC, 1881 IEEE80211_ACTION_MESHLMETRIC_REP, 1882 &metric); 1883 return 0; 1884} 1885 1886static int 1887mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1888 const struct ieee80211_frame *wh, 1889 const uint8_t *frm, const uint8_t *efrm) 1890{ 1891 return 0; 1892} 1893 1894static int 1895mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1896{ 1897 struct ieee80211_bpf_params params; 1898 1899 memset(¶ms, 0, sizeof(params)); 1900 params.ibp_pri = WME_AC_VO; 1901 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1902 /* XXX ucast/mcast */ 1903 params.ibp_try0 = ni->ni_txparms->maxretry; 1904 params.ibp_power = ni->ni_txpower; 1905 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1906 ¶ms); 1907} 1908 1909#define ADDSHORT(frm, v) do { \ 1910 frm[0] = (v) & 0xff; \ 1911 frm[1] = (v) >> 8; \ 1912 frm += 2; \ 1913} while (0) 1914#define ADDWORD(frm, v) do { \ 1915 frm[0] = (v) & 0xff; \ 1916 frm[1] = ((v) >> 8) & 0xff; \ 1917 frm[2] = ((v) >> 16) & 0xff; \ 1918 frm[3] = ((v) >> 24) & 0xff; \ 1919 frm += 4; \ 1920} while (0) 1921 1922static int 1923mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1924 int category, int action, void *args0) 1925{ 1926 struct ieee80211vap *vap = ni->ni_vap; 1927 struct ieee80211com *ic = ni->ni_ic; 1928 uint16_t *args = args0; 1929 const struct ieee80211_rateset *rs; 1930 struct mbuf *m; 1931 uint8_t *frm; 1932 1933 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1934 "send PEER OPEN action: localid 0x%x", args[0]); 1935 1936 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1937 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1938 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1939 ieee80211_ref_node(ni); 1940 1941 m = ieee80211_getmgtframe(&frm, 1942 ic->ic_headroom + sizeof(struct ieee80211_frame), 1943 sizeof(uint16_t) /* action+category */ 1944 + sizeof(uint16_t) /* capabilites */ 1945 + 2 + IEEE80211_RATE_SIZE 1946 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1947 + 2 + IEEE80211_MESHID_LEN 1948 + sizeof(struct ieee80211_meshconf_ie) 1949 + sizeof(struct ieee80211_meshpeer_ie) 1950 ); 1951 if (m != NULL) { 1952 /* 1953 * mesh peer open action frame format: 1954 * [1] category 1955 * [1] action 1956 * [2] capabilities 1957 * [tlv] rates 1958 * [tlv] xrates 1959 * [tlv] mesh id 1960 * [tlv] mesh conf 1961 * [tlv] mesh peer link mgmt 1962 */ 1963 *frm++ = category; 1964 *frm++ = action; 1965 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1966 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1967 frm = ieee80211_add_rates(frm, rs); 1968 frm = ieee80211_add_xrates(frm, rs); 1969 frm = ieee80211_add_meshid(frm, vap); 1970 frm = ieee80211_add_meshconf(frm, vap); 1971 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1972 args[0], 0, 0); 1973 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1974 return mesh_send_action(ni, m); 1975 } else { 1976 vap->iv_stats.is_tx_nobuf++; 1977 ieee80211_free_node(ni); 1978 return ENOMEM; 1979 } 1980} 1981 1982static int 1983mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1984 int category, int action, void *args0) 1985{ 1986 struct ieee80211vap *vap = ni->ni_vap; 1987 struct ieee80211com *ic = ni->ni_ic; 1988 uint16_t *args = args0; 1989 const struct ieee80211_rateset *rs; 1990 struct mbuf *m; 1991 uint8_t *frm; 1992 1993 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1994 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1995 args[0], args[1]); 1996 1997 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1998 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1999 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2000 ieee80211_ref_node(ni); 2001 2002 m = ieee80211_getmgtframe(&frm, 2003 ic->ic_headroom + sizeof(struct ieee80211_frame), 2004 sizeof(uint16_t) /* action+category */ 2005 + sizeof(uint16_t) /* capabilites */ 2006 + sizeof(uint16_t) /* status code */ 2007 + sizeof(uint16_t) /* AID */ 2008 + 2 + IEEE80211_RATE_SIZE 2009 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 2010 + 2 + IEEE80211_MESHID_LEN 2011 + sizeof(struct ieee80211_meshconf_ie) 2012 + sizeof(struct ieee80211_meshpeer_ie) 2013 ); 2014 if (m != NULL) { 2015 /* 2016 * mesh peer confirm action frame format: 2017 * [1] category 2018 * [1] action 2019 * [2] capabilities 2020 * [2] status code 2021 * [2] association id (peer ID) 2022 * [tlv] rates 2023 * [tlv] xrates 2024 * [tlv] mesh id 2025 * [tlv] mesh conf 2026 * [tlv] mesh peer link mgmt 2027 */ 2028 *frm++ = category; 2029 *frm++ = action; 2030 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2031 ADDSHORT(frm, 0); /* status code */ 2032 ADDSHORT(frm, args[1]); /* AID */ 2033 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2034 frm = ieee80211_add_rates(frm, rs); 2035 frm = ieee80211_add_xrates(frm, rs); 2036 frm = ieee80211_add_meshid(frm, vap); 2037 frm = ieee80211_add_meshconf(frm, vap); 2038 frm = ieee80211_add_meshpeer(frm, 2039 IEEE80211_MESH_PEER_LINK_CONFIRM, 2040 args[0], args[1], 0); 2041 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2042 return mesh_send_action(ni, m); 2043 } else { 2044 vap->iv_stats.is_tx_nobuf++; 2045 ieee80211_free_node(ni); 2046 return ENOMEM; 2047 } 2048} 2049 2050static int 2051mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2052 int category, int action, void *args0) 2053{ 2054 struct ieee80211vap *vap = ni->ni_vap; 2055 struct ieee80211com *ic = ni->ni_ic; 2056 uint16_t *args = args0; 2057 struct mbuf *m; 2058 uint8_t *frm; 2059 2060 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2061 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2062 args[0], args[1], args[2]); 2063 2064 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2065 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2066 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2067 ieee80211_ref_node(ni); 2068 2069 m = ieee80211_getmgtframe(&frm, 2070 ic->ic_headroom + sizeof(struct ieee80211_frame), 2071 sizeof(uint16_t) /* action+category */ 2072 + sizeof(uint16_t) /* reason code */ 2073 + 2 + IEEE80211_MESHID_LEN 2074 + sizeof(struct ieee80211_meshpeer_ie) 2075 ); 2076 if (m != NULL) { 2077 /* 2078 * mesh peer close action frame format: 2079 * [1] category 2080 * [1] action 2081 * [2] reason code 2082 * [tlv] mesh id 2083 * [tlv] mesh peer link mgmt 2084 */ 2085 *frm++ = category; 2086 *frm++ = action; 2087 ADDSHORT(frm, args[2]); /* reason code */ 2088 frm = ieee80211_add_meshid(frm, vap); 2089 frm = ieee80211_add_meshpeer(frm, 2090 IEEE80211_MESH_PEER_LINK_CLOSE, 2091 args[0], args[1], args[2]); 2092 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2093 return mesh_send_action(ni, m); 2094 } else { 2095 vap->iv_stats.is_tx_nobuf++; 2096 ieee80211_free_node(ni); 2097 return ENOMEM; 2098 } 2099} 2100 2101static int 2102mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2103 int category, int action, void *arg0) 2104{ 2105 struct ieee80211vap *vap = ni->ni_vap; 2106 struct ieee80211com *ic = ni->ni_ic; 2107 struct mbuf *m; 2108 uint8_t *frm; 2109 2110 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2111 "%s", "send LINK METRIC REQUEST action"); 2112 2113 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2114 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2115 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2116 ieee80211_ref_node(ni); 2117 2118 m = ieee80211_getmgtframe(&frm, 2119 ic->ic_headroom + sizeof(struct ieee80211_frame), 2120 sizeof(uint16_t) /* action+category */ 2121 ); 2122 if (m != NULL) { 2123 /* 2124 * mesh link metric request 2125 * [1] category 2126 * [1] action 2127 */ 2128 *frm++ = category; 2129 *frm++ = action; 2130 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2131 return mesh_send_action(ni, m); 2132 } else { 2133 vap->iv_stats.is_tx_nobuf++; 2134 ieee80211_free_node(ni); 2135 return ENOMEM; 2136 } 2137} 2138 2139static int 2140mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2141 int category, int action, void *args0) 2142{ 2143 struct ieee80211vap *vap = ni->ni_vap; 2144 struct ieee80211com *ic = ni->ni_ic; 2145 uint32_t *metric = args0; 2146 struct mbuf *m; 2147 uint8_t *frm; 2148 2149 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2150 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2151 2152 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2153 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2154 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2155 ieee80211_ref_node(ni); 2156 2157 m = ieee80211_getmgtframe(&frm, 2158 ic->ic_headroom + sizeof(struct ieee80211_frame), 2159 sizeof(uint16_t) /* action+category */ 2160 + sizeof(struct ieee80211_meshlmetric_ie) 2161 ); 2162 if (m != NULL) { 2163 /* 2164 * mesh link metric reply 2165 * [1] category 2166 * [1] action 2167 * [tlv] mesh link metric 2168 */ 2169 *frm++ = category; 2170 *frm++ = action; 2171 frm = ieee80211_add_meshlmetric(frm, *metric); 2172 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2173 return mesh_send_action(ni, m); 2174 } else { 2175 vap->iv_stats.is_tx_nobuf++; 2176 ieee80211_free_node(ni); 2177 return ENOMEM; 2178 } 2179} 2180 2181static void 2182mesh_peer_timeout_setup(struct ieee80211_node *ni) 2183{ 2184 switch (ni->ni_mlstate) { 2185 case IEEE80211_NODE_MESH_HOLDING: 2186 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2187 break; 2188 case IEEE80211_NODE_MESH_CONFIRMRCV: 2189 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2190 break; 2191 case IEEE80211_NODE_MESH_IDLE: 2192 ni->ni_mltval = 0; 2193 break; 2194 default: 2195 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2196 break; 2197 } 2198 if (ni->ni_mltval) 2199 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2200 mesh_peer_timeout_cb, ni); 2201} 2202 2203/* 2204 * Same as above but backoffs timer statisically 50%. 2205 */ 2206static void 2207mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2208{ 2209 uint32_t r; 2210 2211 r = arc4random(); 2212 ni->ni_mltval += r % ni->ni_mltval; 2213 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2214 ni); 2215} 2216 2217static __inline void 2218mesh_peer_timeout_stop(struct ieee80211_node *ni) 2219{ 2220 callout_drain(&ni->ni_mltimer); 2221} 2222 2223/* 2224 * Mesh Peer Link Management FSM timeout handling. 2225 */ 2226static void 2227mesh_peer_timeout_cb(void *arg) 2228{ 2229 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2230 uint16_t args[3]; 2231 2232 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2233 ni, "mesh link timeout, state %d, retry counter %d", 2234 ni->ni_mlstate, ni->ni_mlrcnt); 2235 2236 switch (ni->ni_mlstate) { 2237 case IEEE80211_NODE_MESH_IDLE: 2238 case IEEE80211_NODE_MESH_ESTABLISHED: 2239 break; 2240 case IEEE80211_NODE_MESH_OPENSNT: 2241 case IEEE80211_NODE_MESH_OPENRCV: 2242 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2243 args[0] = ni->ni_mlpid; 2244 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2245 ieee80211_send_action(ni, 2246 IEEE80211_ACTION_CAT_MESHPEERING, 2247 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2248 ni->ni_mlrcnt = 0; 2249 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2250 mesh_peer_timeout_setup(ni); 2251 } else { 2252 args[0] = ni->ni_mlpid; 2253 ieee80211_send_action(ni, 2254 IEEE80211_ACTION_CAT_MESHPEERING, 2255 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2256 ni->ni_mlrcnt++; 2257 mesh_peer_timeout_backoff(ni); 2258 } 2259 break; 2260 case IEEE80211_NODE_MESH_CONFIRMRCV: 2261 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2262 args[0] = ni->ni_mlpid; 2263 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2264 ieee80211_send_action(ni, 2265 IEEE80211_ACTION_CAT_MESHPEERING, 2266 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2267 ni->ni_mlrcnt = 0; 2268 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2269 mesh_peer_timeout_setup(ni); 2270 } else { 2271 ni->ni_mlrcnt++; 2272 mesh_peer_timeout_setup(ni); 2273 } 2274 break; 2275 case IEEE80211_NODE_MESH_HOLDING: 2276 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2277 break; 2278 } 2279} 2280 2281static int 2282mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2283{ 2284 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2285 2286 if (ie == NULL || ie[1] != ms->ms_idlen) 2287 return 1; 2288 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2289} 2290 2291/* 2292 * Check if we are using the same algorithms for this mesh. 2293 */ 2294static int 2295mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2296{ 2297 const struct ieee80211_meshconf_ie *meshconf = 2298 (const struct ieee80211_meshconf_ie *) ie; 2299 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2300 uint16_t cap; 2301 2302 if (meshconf == NULL) 2303 return 1; 2304 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2305 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2306 "unknown path selection algorithm: 0x%x\n", 2307 meshconf->conf_pselid); 2308 return 1; 2309 } 2310 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2311 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2312 "unknown path metric algorithm: 0x%x\n", 2313 meshconf->conf_pmetid); 2314 return 1; 2315 } 2316 if (meshconf->conf_ccid != 0) { 2317 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2318 "unknown congestion control algorithm: 0x%x\n", 2319 meshconf->conf_ccid); 2320 return 1; 2321 } 2322 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2323 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2324 "unknown sync algorithm: 0x%x\n", 2325 meshconf->conf_syncid); 2326 return 1; 2327 } 2328 if (meshconf->conf_authid != 0) { 2329 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2330 "unknown auth auth algorithm: 0x%x\n", 2331 meshconf->conf_pselid); 2332 return 1; 2333 } 2334 /* NB: conf_cap is only read correctly here */ 2335 cap = LE_READ_2(&meshconf->conf_cap); 2336 /* Not accepting peers */ 2337 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) { 2338 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2339 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2340 return 1; 2341 } 2342 return 0; 2343} 2344 2345static int 2346mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2347 const uint8_t *ie) 2348{ 2349 const struct ieee80211_meshpeer_ie *meshpeer = 2350 (const struct ieee80211_meshpeer_ie *) ie; 2351 2352 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2353 meshpeer->peer_len > 10) 2354 return 1; 2355 switch (subtype) { 2356 case IEEE80211_MESH_PEER_LINK_OPEN: 2357 if (meshpeer->peer_len != 6) 2358 return 1; 2359 break; 2360 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2361 if (meshpeer->peer_len != 8) 2362 return 1; 2363 break; 2364 case IEEE80211_MESH_PEER_LINK_CLOSE: 2365 if (meshpeer->peer_len < 8) 2366 return 1; 2367 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2368 return 1; 2369 if (meshpeer->peer_rcode == 0) 2370 return 1; 2371 break; 2372 } 2373 return 0; 2374} 2375 2376/* 2377 * Add a Mesh ID IE to a frame. 2378 */ 2379uint8_t * 2380ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2381{ 2382 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2383 2384 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2385 2386 *frm++ = IEEE80211_ELEMID_MESHID; 2387 *frm++ = ms->ms_idlen; 2388 memcpy(frm, ms->ms_id, ms->ms_idlen); 2389 return frm + ms->ms_idlen; 2390} 2391 2392/* 2393 * Add a Mesh Configuration IE to a frame. 2394 * For now just use HWMP routing, Airtime link metric, Null Congestion 2395 * Signaling, Null Sync Protocol and Null Authentication. 2396 */ 2397uint8_t * 2398ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2399{ 2400 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2401 uint16_t caps; 2402 2403 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2404 2405 *frm++ = IEEE80211_ELEMID_MESHCONF; 2406 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2407 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2408 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2409 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2410 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2411 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2412 /* NB: set the number of neighbors before the rest */ 2413 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2414 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2415 *frm |= IEEE80211_MESHCONF_FORM_MP; 2416 frm += 1; 2417 caps = 0; 2418 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2419 caps |= IEEE80211_MESHCONF_CAP_AP; 2420 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2421 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2422 ADDSHORT(frm, caps); 2423 return frm; 2424} 2425 2426/* 2427 * Add a Mesh Peer Management IE to a frame. 2428 */ 2429uint8_t * 2430ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2431 uint16_t peerid, uint16_t reason) 2432{ 2433 /* XXX change for AH */ 2434 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2435 2436 KASSERT(localid != 0, ("localid == 0")); 2437 2438 *frm++ = IEEE80211_ELEMID_MESHPEER; 2439 switch (subtype) { 2440 case IEEE80211_MESH_PEER_LINK_OPEN: 2441 *frm++ = 6; /* length */ 2442 memcpy(frm, meshpeerproto, 4); 2443 frm += 4; 2444 ADDSHORT(frm, localid); /* local ID */ 2445 break; 2446 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2447 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2448 *frm++ = 8; /* length */ 2449 memcpy(frm, meshpeerproto, 4); 2450 frm += 4; 2451 ADDSHORT(frm, localid); /* local ID */ 2452 ADDSHORT(frm, peerid); /* peer ID */ 2453 break; 2454 case IEEE80211_MESH_PEER_LINK_CLOSE: 2455 if (peerid) 2456 *frm++ = 10; /* length */ 2457 else 2458 *frm++ = 8; /* length */ 2459 memcpy(frm, meshpeerproto, 4); 2460 frm += 4; 2461 ADDSHORT(frm, localid); /* local ID */ 2462 if (peerid) 2463 ADDSHORT(frm, peerid); /* peer ID */ 2464 ADDSHORT(frm, reason); 2465 break; 2466 } 2467 return frm; 2468} 2469 2470/* 2471 * Compute an Airtime Link Metric for the link with this node. 2472 * 2473 * Based on Draft 3.0 spec (11B.10, p.149). 2474 */ 2475/* 2476 * Max 802.11s overhead. 2477 */ 2478#define IEEE80211_MESH_MAXOVERHEAD \ 2479 (sizeof(struct ieee80211_qosframe_addr4) \ 2480 + sizeof(struct ieee80211_meshcntl_ae11) \ 2481 + sizeof(struct llc) \ 2482 + IEEE80211_ADDR_LEN \ 2483 + IEEE80211_WEP_IVLEN \ 2484 + IEEE80211_WEP_KIDLEN \ 2485 + IEEE80211_WEP_CRCLEN \ 2486 + IEEE80211_WEP_MICLEN \ 2487 + IEEE80211_CRC_LEN) 2488uint32_t 2489mesh_airtime_calc(struct ieee80211_node *ni) 2490{ 2491#define M_BITS 8 2492#define S_FACTOR (2 * M_BITS) 2493 struct ieee80211com *ic = ni->ni_ic; 2494 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2495 const static int nbits = 8192 << M_BITS; 2496 uint32_t overhead, rate, errrate; 2497 uint64_t res; 2498 2499 /* Time to transmit a frame */ 2500 rate = ni->ni_txrate; 2501 overhead = ieee80211_compute_duration(ic->ic_rt, 2502 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2503 /* Error rate in percentage */ 2504 /* XXX assuming small failures are ok */ 2505 errrate = (((ifp->if_oerrors + 2506 ifp->if_ierrors) / 100) << M_BITS) / 100; 2507 res = (overhead + (nbits / rate)) * 2508 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2509 2510 return (uint32_t)(res >> S_FACTOR); 2511#undef M_BITS 2512#undef S_FACTOR 2513} 2514 2515/* 2516 * Add a Mesh Link Metric report IE to a frame. 2517 */ 2518uint8_t * 2519ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2520{ 2521 *frm++ = IEEE80211_ELEMID_MESHLINK; 2522 *frm++ = 4; 2523 ADDWORD(frm, metric); 2524 return frm; 2525} 2526#undef ADDSHORT 2527#undef ADDWORD 2528 2529/* 2530 * Initialize any mesh-specific node state. 2531 */ 2532void 2533ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2534{ 2535 ni->ni_flags |= IEEE80211_NODE_QOS; 2536 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2537} 2538 2539/* 2540 * Cleanup any mesh-specific node state. 2541 */ 2542void 2543ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2544{ 2545 struct ieee80211vap *vap = ni->ni_vap; 2546 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2547 2548 callout_drain(&ni->ni_mltimer); 2549 /* NB: short-circuit callbacks after mesh_vdetach */ 2550 if (vap->iv_mesh != NULL) 2551 ms->ms_ppath->mpp_peerdown(ni); 2552} 2553 2554void 2555ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2556{ 2557 ni->ni_meshidlen = ie[1]; 2558 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2559} 2560 2561/* 2562 * Setup mesh-specific node state on neighbor discovery. 2563 */ 2564void 2565ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2566 const struct ieee80211_frame *wh, 2567 const struct ieee80211_scanparams *sp) 2568{ 2569 ieee80211_parse_meshid(ni, sp->meshid); 2570} 2571 2572void 2573ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2574 struct ieee80211_beacon_offsets *bo) 2575{ 2576 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2577 2578 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2579 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2580 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2581 } 2582} 2583 2584static int 2585mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2586{ 2587 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2588 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2589 struct ieee80211_mesh_route *rt; 2590 struct ieee80211req_mesh_route *imr; 2591 size_t len, off; 2592 uint8_t *p; 2593 int error; 2594 2595 if (vap->iv_opmode != IEEE80211_M_MBSS) 2596 return ENOSYS; 2597 2598 error = 0; 2599 switch (ireq->i_type) { 2600 case IEEE80211_IOC_MESH_ID: 2601 ireq->i_len = ms->ms_idlen; 2602 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2603 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2604 break; 2605 case IEEE80211_IOC_MESH_AP: 2606 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2607 break; 2608 case IEEE80211_IOC_MESH_FWRD: 2609 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2610 break; 2611 case IEEE80211_IOC_MESH_TTL: 2612 ireq->i_val = ms->ms_ttl; 2613 break; 2614 case IEEE80211_IOC_MESH_RTCMD: 2615 switch (ireq->i_val) { 2616 case IEEE80211_MESH_RTCMD_LIST: 2617 len = 0; 2618 MESH_RT_LOCK(ms); 2619 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2620 len += sizeof(*imr); 2621 } 2622 MESH_RT_UNLOCK(ms); 2623 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2624 ireq->i_len = len; 2625 return ENOMEM; 2626 } 2627 ireq->i_len = len; 2628 /* XXX M_WAIT? */ 2629 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2630 if (p == NULL) 2631 return ENOMEM; 2632 off = 0; 2633 MESH_RT_LOCK(ms); 2634 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2635 if (off >= len) 2636 break; 2637 imr = (struct ieee80211req_mesh_route *) 2638 (p + off); 2639 imr->imr_flags = rt->rt_flags; 2640 IEEE80211_ADDR_COPY(imr->imr_dest, 2641 rt->rt_dest); 2642 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2643 rt->rt_nexthop); 2644 imr->imr_metric = rt->rt_metric; 2645 imr->imr_nhops = rt->rt_nhops; 2646 imr->imr_lifetime = rt->rt_lifetime; 2647 imr->imr_lastmseq = rt->rt_lastmseq; 2648 off += sizeof(*imr); 2649 } 2650 MESH_RT_UNLOCK(ms); 2651 error = copyout(p, (uint8_t *)ireq->i_data, 2652 ireq->i_len); 2653 free(p, M_TEMP); 2654 break; 2655 case IEEE80211_MESH_RTCMD_FLUSH: 2656 case IEEE80211_MESH_RTCMD_ADD: 2657 case IEEE80211_MESH_RTCMD_DELETE: 2658 return EINVAL; 2659 default: 2660 return ENOSYS; 2661 } 2662 break; 2663 case IEEE80211_IOC_MESH_PR_METRIC: 2664 len = strlen(ms->ms_pmetric->mpm_descr); 2665 if (ireq->i_len < len) 2666 return EINVAL; 2667 ireq->i_len = len; 2668 error = copyout(ms->ms_pmetric->mpm_descr, 2669 (uint8_t *)ireq->i_data, len); 2670 break; 2671 case IEEE80211_IOC_MESH_PR_PATH: 2672 len = strlen(ms->ms_ppath->mpp_descr); 2673 if (ireq->i_len < len) 2674 return EINVAL; 2675 ireq->i_len = len; 2676 error = copyout(ms->ms_ppath->mpp_descr, 2677 (uint8_t *)ireq->i_data, len); 2678 break; 2679 default: 2680 return ENOSYS; 2681 } 2682 2683 return error; 2684} 2685IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2686 2687static int 2688mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2689{ 2690 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2691 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2692 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2693 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2694 int error; 2695 2696 if (vap->iv_opmode != IEEE80211_M_MBSS) 2697 return ENOSYS; 2698 2699 error = 0; 2700 switch (ireq->i_type) { 2701 case IEEE80211_IOC_MESH_ID: 2702 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2703 return EINVAL; 2704 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2705 if (error != 0) 2706 break; 2707 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2708 ms->ms_idlen = ireq->i_len; 2709 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2710 error = ENETRESET; 2711 break; 2712 case IEEE80211_IOC_MESH_AP: 2713 if (ireq->i_val) 2714 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2715 else 2716 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2717 error = ENETRESET; 2718 break; 2719 case IEEE80211_IOC_MESH_FWRD: 2720 if (ireq->i_val) 2721 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2722 else 2723 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2724 break; 2725 case IEEE80211_IOC_MESH_TTL: 2726 ms->ms_ttl = (uint8_t) ireq->i_val; 2727 break; 2728 case IEEE80211_IOC_MESH_RTCMD: 2729 switch (ireq->i_val) { 2730 case IEEE80211_MESH_RTCMD_LIST: 2731 return EINVAL; 2732 case IEEE80211_MESH_RTCMD_FLUSH: 2733 ieee80211_mesh_rt_flush(vap); 2734 break; 2735 case IEEE80211_MESH_RTCMD_ADD: 2736 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2737 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2738 return EINVAL; 2739 error = copyin(ireq->i_data, &tmpaddr, 2740 IEEE80211_ADDR_LEN); 2741 if (error == 0) 2742 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2743 break; 2744 case IEEE80211_MESH_RTCMD_DELETE: 2745 ieee80211_mesh_rt_del(vap, ireq->i_data); 2746 break; 2747 default: 2748 return ENOSYS; 2749 } 2750 break; 2751 case IEEE80211_IOC_MESH_PR_METRIC: 2752 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2753 if (error == 0) { 2754 error = mesh_select_proto_metric(vap, tmpproto); 2755 if (error == 0) 2756 error = ENETRESET; 2757 } 2758 break; 2759 case IEEE80211_IOC_MESH_PR_PATH: 2760 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2761 if (error == 0) { 2762 error = mesh_select_proto_path(vap, tmpproto); 2763 if (error == 0) 2764 error = ENETRESET; 2765 } 2766 break; 2767 default: 2768 return ENOSYS; 2769 } 2770 return error; 2771} 2772IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2773