ieee80211_mesh.c revision 195813
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 195813 2009-07-21 19:38:22Z sam $"); 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_meshpeerver(struct ieee80211vap *, const uint8_t *); 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 *, 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_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 240 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 241 | IEEE80211_MESHRT_FLAGS_PROXY; 242 } 243 /* XXX assert PROXY? */ 244 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 245 struct ieee80211com *ic = vap->iv_ic; 246 /* 247 * Fix existing entry created by received frames from 248 * stations that have some memory of dest. We also 249 * flush any frames held on the staging queue; delivering 250 * them is too much trouble right now. 251 */ 252 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 253 "%s", "fix proxy entry"); 254 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 255 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 256 | IEEE80211_MESHRT_FLAGS_PROXY; 257 /* XXX belongs in hwmp */ 258 ieee80211_ageq_drain_node(&ic->ic_stageq, 259 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 260 /* XXX stat? */ 261 } 262 MESH_RT_UNLOCK(ms); 263} 264 265static __inline void 266mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 267{ 268 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 269 free(rt, M_80211_MESH_RT); 270} 271 272void 273ieee80211_mesh_rt_del(struct ieee80211vap *vap, 274 const uint8_t dest[IEEE80211_ADDR_LEN]) 275{ 276 struct ieee80211_mesh_state *ms = vap->iv_mesh; 277 struct ieee80211_mesh_route *rt, *next; 278 279 MESH_RT_LOCK(ms); 280 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 281 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 282 mesh_rt_del(ms, rt); 283 MESH_RT_UNLOCK(ms); 284 return; 285 } 286 } 287 MESH_RT_UNLOCK(ms); 288} 289 290void 291ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 292{ 293 struct ieee80211_mesh_state *ms = vap->iv_mesh; 294 struct ieee80211_mesh_route *rt, *next; 295 296 if (ms == NULL) 297 return; 298 MESH_RT_LOCK(ms); 299 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 300 mesh_rt_del(ms, rt); 301 MESH_RT_UNLOCK(ms); 302} 303 304/* 305 * Flush expired routing entries, i.e. those in invalid state for 306 * some time. 307 */ 308static void 309mesh_rt_flush_invalid(struct ieee80211vap *vap) 310{ 311 struct ieee80211_mesh_state *ms = vap->iv_mesh; 312 struct ieee80211_mesh_route *rt, *next; 313 314 if (ms == NULL) 315 return; 316 MESH_RT_LOCK(ms); 317 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 318 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 319 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 320 mesh_rt_del(ms, rt); 321 } 322 MESH_RT_UNLOCK(ms); 323} 324 325#define N(a) (sizeof(a) / sizeof(a[0])) 326int 327ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 328{ 329 int i, firstempty = -1; 330 static const uint8_t emptyie[4] = { 0, 0, 0, 0 }; 331 332 for (i = 0; i < N(mesh_proto_paths); i++) { 333 if (memcmp(mpp->mpp_ie, mesh_proto_paths[i].mpp_ie, 4) == 0) 334 return EEXIST; 335 if (memcmp(mesh_proto_paths[i].mpp_ie, emptyie, 4) == 0 && 336 firstempty == -1) 337 firstempty = i; 338 } 339 if (firstempty < 0) 340 return ENOSPC; 341 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 342 return 0; 343} 344 345int 346ieee80211_mesh_register_proto_metric(const struct 347 ieee80211_mesh_proto_metric *mpm) 348{ 349 int i, firstempty = -1; 350 static const uint8_t emptyie[4] = { 0, 0, 0, 0 }; 351 352 for (i = 0; i < N(mesh_proto_metrics); i++) { 353 if (memcmp(mpm->mpm_ie, mesh_proto_metrics[i].mpm_ie, 4) == 0) 354 return EEXIST; 355 if (memcmp(mesh_proto_metrics[i].mpm_ie, emptyie, 4) == 0 && 356 firstempty == -1) 357 firstempty = i; 358 } 359 if (firstempty < 0) 360 return ENOSPC; 361 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 362 return 0; 363} 364 365static int 366mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 367{ 368 struct ieee80211_mesh_state *ms = vap->iv_mesh; 369 int i; 370 371 for (i = 0; i < N(mesh_proto_paths); i++) { 372 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 373 ms->ms_ppath = &mesh_proto_paths[i]; 374 if (vap->iv_state == IEEE80211_S_RUN) 375 vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 376 return 0; 377 } 378 } 379 return ENOENT; 380} 381 382static int 383mesh_select_proto_metric(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_metrics); i++) { 389 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 390 ms->ms_pmetric = &mesh_proto_metrics[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#undef N 399 400static void 401ieee80211_mesh_init(void) 402{ 403 404 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 405 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 406 407 /* 408 * Setup mesh parameters that depends on the clock frequency. 409 */ 410 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 411 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 412 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 413 414 /* 415 * Register action frame handlers. 416 */ 417 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 418 IEEE80211_ACTION_MESHPEERING_OPEN, 419 mesh_recv_action_meshpeering_open); 420 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 421 IEEE80211_ACTION_MESHPEERING_CONFIRM, 422 mesh_recv_action_meshpeering_confirm); 423 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 424 IEEE80211_ACTION_MESHPEERING_CLOSE, 425 mesh_recv_action_meshpeering_close); 426 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 427 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 428 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 429 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 430 431 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 432 IEEE80211_ACTION_MESHPEERING_OPEN, 433 mesh_send_action_meshpeering_open); 434 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 435 IEEE80211_ACTION_MESHPEERING_CONFIRM, 436 mesh_send_action_meshpeering_confirm); 437 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 438 IEEE80211_ACTION_MESHPEERING_CLOSE, 439 mesh_send_action_meshpeering_close); 440 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 441 IEEE80211_ACTION_MESHLMETRIC_REQ, 442 mesh_send_action_meshlink_request); 443 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 444 IEEE80211_ACTION_MESHLMETRIC_REP, 445 mesh_send_action_meshlink_reply); 446 447 /* 448 * Register Airtime Link Metric. 449 */ 450 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 451 452} 453SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 454 455void 456ieee80211_mesh_attach(struct ieee80211com *ic) 457{ 458 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 459} 460 461void 462ieee80211_mesh_detach(struct ieee80211com *ic) 463{ 464} 465 466static void 467mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 468{ 469 struct ieee80211com *ic = ni->ni_ic; 470 uint16_t args[3]; 471 472 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 473 args[0] = ni->ni_mlpid; 474 args[1] = ni->ni_mllid; 475 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 476 ieee80211_send_action(ni, 477 IEEE80211_ACTION_CAT_MESHPEERING, 478 IEEE80211_ACTION_MESHPEERING_CLOSE, 479 args); 480 } 481 callout_drain(&ni->ni_mltimer); 482 /* XXX belongs in hwmp */ 483 ieee80211_ageq_drain_node(&ic->ic_stageq, 484 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 485} 486 487static void 488mesh_vdetach(struct ieee80211vap *vap) 489{ 490 struct ieee80211_mesh_state *ms = vap->iv_mesh; 491 492 callout_drain(&ms->ms_cleantimer); 493 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 494 NULL); 495 ieee80211_mesh_rt_flush(vap); 496 mtx_destroy(&ms->ms_rt_lock); 497 ms->ms_ppath->mpp_vdetach(vap); 498 free(vap->iv_mesh, M_80211_VAP); 499 vap->iv_mesh = NULL; 500} 501 502static void 503mesh_vattach(struct ieee80211vap *vap) 504{ 505 struct ieee80211_mesh_state *ms; 506 vap->iv_newstate = mesh_newstate; 507 vap->iv_input = mesh_input; 508 vap->iv_opdetach = mesh_vdetach; 509 vap->iv_recv_mgmt = mesh_recv_mgmt; 510 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 511 M_NOWAIT | M_ZERO); 512 if (ms == NULL) { 513 printf("%s: couldn't alloc MBSS state\n", __func__); 514 return; 515 } 516 vap->iv_mesh = ms; 517 ms->ms_seq = 0; 518 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 519 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 520 TAILQ_INIT(&ms->ms_routes); 521 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 522 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 523 mesh_select_proto_metric(vap, "AIRTIME"); 524 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 525 mesh_select_proto_path(vap, "HWMP"); 526 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 527 ms->ms_ppath->mpp_vattach(vap); 528} 529 530/* 531 * IEEE80211_M_MBSS vap state machine handler. 532 */ 533static int 534mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 535{ 536 struct ieee80211_mesh_state *ms = vap->iv_mesh; 537 struct ieee80211com *ic = vap->iv_ic; 538 struct ieee80211_node *ni; 539 enum ieee80211_state ostate; 540 541 IEEE80211_LOCK_ASSERT(ic); 542 543 ostate = vap->iv_state; 544 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 545 __func__, ieee80211_state_name[ostate], 546 ieee80211_state_name[nstate], arg); 547 vap->iv_state = nstate; /* state transition */ 548 if (ostate != IEEE80211_S_SCAN) 549 ieee80211_cancel_scan(vap); /* background scan */ 550 ni = vap->iv_bss; /* NB: no reference held */ 551 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 552 callout_drain(&ms->ms_cleantimer); 553 switch (nstate) { 554 case IEEE80211_S_INIT: 555 switch (ostate) { 556 case IEEE80211_S_SCAN: 557 ieee80211_cancel_scan(vap); 558 break; 559 case IEEE80211_S_CAC: 560 ieee80211_dfs_cac_stop(vap); 561 break; 562 case IEEE80211_S_RUN: 563 ieee80211_iterate_nodes(&ic->ic_sta, 564 mesh_vdetach_peers, NULL); 565 break; 566 default: 567 break; 568 } 569 if (ostate != IEEE80211_S_INIT) { 570 /* NB: optimize INIT -> INIT case */ 571 ieee80211_reset_bss(vap); 572 ieee80211_mesh_rt_flush(vap); 573 } 574 break; 575 case IEEE80211_S_SCAN: 576 switch (ostate) { 577 case IEEE80211_S_INIT: 578 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 579 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 580 ms->ms_idlen != 0) { 581 /* 582 * Already have a channel and a mesh ID; bypass 583 * the scan and startup immediately. 584 */ 585 ieee80211_create_ibss(vap, vap->iv_des_chan); 586 break; 587 } 588 /* 589 * Initiate a scan. We can come here as a result 590 * of an IEEE80211_IOC_SCAN_REQ too in which case 591 * the vap will be marked with IEEE80211_FEXT_SCANREQ 592 * and the scan request parameters will be present 593 * in iv_scanreq. Otherwise we do the default. 594 */ 595 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 596 ieee80211_check_scan(vap, 597 vap->iv_scanreq_flags, 598 vap->iv_scanreq_duration, 599 vap->iv_scanreq_mindwell, 600 vap->iv_scanreq_maxdwell, 601 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 602 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 603 } else 604 ieee80211_check_scan_current(vap); 605 break; 606 default: 607 break; 608 } 609 break; 610 case IEEE80211_S_CAC: 611 /* 612 * Start CAC on a DFS channel. We come here when starting 613 * a bss on a DFS channel (see ieee80211_create_ibss). 614 */ 615 ieee80211_dfs_cac_start(vap); 616 break; 617 case IEEE80211_S_RUN: 618 switch (ostate) { 619 case IEEE80211_S_INIT: 620 /* 621 * Already have a channel; bypass the 622 * scan and startup immediately. 623 * Note that ieee80211_create_ibss will call 624 * back to do a RUN->RUN state change. 625 */ 626 ieee80211_create_ibss(vap, 627 ieee80211_ht_adjust_channel(ic, 628 ic->ic_curchan, vap->iv_flags_ht)); 629 /* NB: iv_bss is changed on return */ 630 break; 631 case IEEE80211_S_CAC: 632 /* 633 * NB: This is the normal state change when CAC 634 * expires and no radar was detected; no need to 635 * clear the CAC timer as it's already expired. 636 */ 637 /* fall thru... */ 638 case IEEE80211_S_CSA: 639#if 0 640 /* 641 * Shorten inactivity timer of associated stations 642 * to weed out sta's that don't follow a CSA. 643 */ 644 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 645#endif 646 /* 647 * Update bss node channel to reflect where 648 * we landed after CSA. 649 */ 650 ieee80211_node_set_chan(vap->iv_bss, 651 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 652 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 653 /* XXX bypass debug msgs */ 654 break; 655 case IEEE80211_S_SCAN: 656 case IEEE80211_S_RUN: 657#ifdef IEEE80211_DEBUG 658 if (ieee80211_msg_debug(vap)) { 659 struct ieee80211_node *ni = vap->iv_bss; 660 ieee80211_note(vap, 661 "synchronized with %s meshid ", 662 ether_sprintf(ni->ni_meshid)); 663 ieee80211_print_essid(ni->ni_meshid, 664 ni->ni_meshidlen); 665 /* XXX MCS/HT */ 666 printf(" channel %d\n", 667 ieee80211_chan2ieee(ic, ic->ic_curchan)); 668 } 669#endif 670 break; 671 default: 672 break; 673 } 674 ieee80211_node_authorize(vap->iv_bss); 675 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 676 mesh_rt_cleanup_cb, vap); 677 break; 678 default: 679 break; 680 } 681 /* NB: ostate not nstate */ 682 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 683 return 0; 684} 685 686static void 687mesh_rt_cleanup_cb(void *arg) 688{ 689 struct ieee80211vap *vap = arg; 690 struct ieee80211_mesh_state *ms = vap->iv_mesh; 691 692 mesh_rt_flush_invalid(vap); 693 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 694 mesh_rt_cleanup_cb, vap); 695} 696 697 698/* 699 * Helper function to note the Mesh Peer Link FSM change. 700 */ 701static void 702mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 703{ 704 struct ieee80211vap *vap = ni->ni_vap; 705 struct ieee80211_mesh_state *ms = vap->iv_mesh; 706#ifdef IEEE80211_DEBUG 707 static const char *meshlinkstates[] = { 708 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 709 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 710 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 711 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 712 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 713 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 714 }; 715#endif 716 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 717 ni, "peer link: %s -> %s", 718 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 719 720 /* track neighbor count */ 721 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 722 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 723 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 724 ms->ms_neighbors++; 725 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 726 state != IEEE80211_NODE_MESH_ESTABLISHED) { 727 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 728 ms->ms_neighbors--; 729 } 730 ni->ni_mlstate = state; 731 switch (state) { 732 case IEEE80211_NODE_MESH_HOLDING: 733 ms->ms_ppath->mpp_peerdown(ni); 734 break; 735 case IEEE80211_NODE_MESH_ESTABLISHED: 736 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 737 break; 738 default: 739 break; 740 } 741} 742 743/* 744 * Helper function to generate a unique local ID required for mesh 745 * peer establishment. 746 */ 747static void 748mesh_checkid(void *arg, struct ieee80211_node *ni) 749{ 750 uint16_t *r = arg; 751 752 if (*r == ni->ni_mllid) 753 *(uint16_t *)arg = 0; 754} 755 756static uint32_t 757mesh_generateid(struct ieee80211vap *vap) 758{ 759 int maxiter = 4; 760 uint16_t r; 761 762 do { 763 get_random_bytes(&r, 2); 764 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 765 maxiter--; 766 } while (r == 0 && maxiter > 0); 767 return r; 768} 769 770/* 771 * Verifies if we already received this packet by checking its 772 * sequence number. 773 */ 774static int 775mesh_checkpseq(struct ieee80211vap *vap, 776 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 777{ 778 struct ieee80211_mesh_route *rt; 779 780 rt = ieee80211_mesh_rt_find(vap, source); 781 if (rt == NULL) { 782 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 783 "add mcast route, mesh seqno %d", seq); 784 rt = ieee80211_mesh_rt_add(vap, source); 785 if (rt != NULL) 786 rt->rt_lastmseq = seq; 787 return 0; 788 } 789 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 790 return 1; 791 } else { 792 rt->rt_lastmseq = seq; 793 return 0; 794 } 795} 796 797/* 798 * Iterate the routing table and locate the next hop. 799 */ 800static struct ieee80211_node * 801mesh_find_txnode(struct ieee80211vap *vap, 802 const uint8_t dest[IEEE80211_ADDR_LEN]) 803{ 804 struct ieee80211_mesh_route *rt; 805 806 rt = ieee80211_mesh_rt_find(vap, dest); 807 if (rt == NULL) 808 return NULL; 809 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 810 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 811 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 812 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 813 /* XXX stat */ 814 return NULL; 815 } 816 return ieee80211_find_txnode(vap, rt->rt_nexthop); 817} 818 819/* 820 * Forward the specified frame. 821 * Decrement the TTL and set TA to our MAC address. 822 */ 823static void 824mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 825 const struct ieee80211_meshcntl *mc) 826{ 827 struct ieee80211com *ic = vap->iv_ic; 828 struct ieee80211_mesh_state *ms = vap->iv_mesh; 829 struct ifnet *ifp = vap->iv_ifp; 830 struct ifnet *parent = ic->ic_ifp; 831 const struct ieee80211_frame *wh = 832 mtod(m, const struct ieee80211_frame *); 833 struct mbuf *mcopy; 834 struct ieee80211_meshcntl *mccopy; 835 struct ieee80211_frame *whcopy; 836 struct ieee80211_node *ni; 837 int err; 838 839 if (mc->mc_ttl == 0) { 840 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 841 "%s", "frame not fwd'd, ttl 0"); 842 vap->iv_stats.is_mesh_fwd_ttl++; 843 return; 844 } 845 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 846 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 847 "%s", "frame not fwd'd, fwding disabled"); 848 vap->iv_stats.is_mesh_fwd_disabled++; 849 return; 850 } 851 mcopy = m_dup(m, M_DONTWAIT); 852 if (mcopy == NULL) { 853 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 854 "%s", "frame not fwd'd, cannot dup"); 855 vap->iv_stats.is_mesh_fwd_nobuf++; 856 ifp->if_oerrors++; 857 return; 858 } 859 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 860 sizeof(struct ieee80211_meshcntl)); 861 if (mcopy == NULL) { 862 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 863 "%s", "frame not fwd'd, too short"); 864 vap->iv_stats.is_mesh_fwd_tooshort++; 865 ifp->if_oerrors++; 866 m_freem(mcopy); 867 return; 868 } 869 whcopy = mtod(mcopy, struct ieee80211_frame *); 870 mccopy = (struct ieee80211_meshcntl *) 871 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 872 /* XXX clear other bits? */ 873 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 874 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 875 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 876 ni = ieee80211_ref_node(vap->iv_bss); 877 mcopy->m_flags |= M_MCAST; 878 } else { 879 ni = mesh_find_txnode(vap, whcopy->i_addr3); 880 if (ni == NULL) { 881 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 882 "%s", "frame not fwd'd, no path"); 883 vap->iv_stats.is_mesh_fwd_nopath++; 884 m_freem(mcopy); 885 return; 886 } 887 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 888 } 889 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 890 mccopy->mc_ttl--; 891 892 /* XXX calculate priority so drivers can find the tx queue */ 893 M_WME_SETAC(mcopy, WME_AC_BE); 894 895 /* XXX do we know m_nextpkt is NULL? */ 896 mcopy->m_pkthdr.rcvif = (void *) ni; 897 err = parent->if_transmit(parent, mcopy); 898 if (err != 0) { 899 /* NB: IFQ_HANDOFF reclaims mbuf */ 900 ieee80211_free_node(ni); 901 } else { 902 ifp->if_opackets++; 903 } 904} 905 906static struct mbuf * 907mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 908{ 909#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 910 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 911 sizeof(struct ieee80211_meshcntl_ae11)]; 912 const struct ieee80211_qosframe_addr4 *wh; 913 const struct ieee80211_meshcntl_ae10 *mc; 914 struct ether_header *eh; 915 struct llc *llc; 916 int ae; 917 918 if (m->m_len < hdrlen + sizeof(*llc) && 919 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 920 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 921 "discard data frame: %s", "m_pullup failed"); 922 vap->iv_stats.is_rx_tooshort++; 923 return NULL; 924 } 925 memcpy(b, mtod(m, caddr_t), hdrlen); 926 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 927 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 928 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 929 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 930 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 931 932 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 933 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 934 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 935 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 936 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 937 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 938 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 939 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 940 llc = NULL; 941 } else { 942 m_adj(m, hdrlen - sizeof(*eh)); 943 } 944 eh = mtod(m, struct ether_header *); 945 ae = mc->mc_flags & 3; 946 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 947 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 948 if (ae == 0) { 949 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 950 } else if (ae == 1) { 951 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 952 } else { 953 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 954 (const struct ieee80211_frame *)wh, NULL, 955 "bad AE %d", ae); 956 vap->iv_stats.is_mesh_badae++; 957 m_freem(m); 958 return NULL; 959 } 960 } else { 961 if (ae == 0) { 962 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 963 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 964 } else if (ae == 2) { 965 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 966 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 967 } else { 968 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 969 (const struct ieee80211_frame *)wh, NULL, 970 "bad AE %d", ae); 971 vap->iv_stats.is_mesh_badae++; 972 m_freem(m); 973 return NULL; 974 } 975 } 976#ifdef ALIGNED_POINTER 977 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 978 m = ieee80211_realign(vap, m, sizeof(*eh)); 979 if (m == NULL) 980 return NULL; 981 } 982#endif /* ALIGNED_POINTER */ 983 if (llc != NULL) { 984 eh = mtod(m, struct ether_header *); 985 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 986 } 987 return m; 988#undef WDIR 989} 990 991/* 992 * Return non-zero if the unicast mesh data frame should be processed 993 * locally. Frames that are not proxy'd have our address, otherwise 994 * we need to consult the routing table to look for a proxy entry. 995 */ 996static __inline int 997mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 998 const struct ieee80211_meshcntl *mc) 999{ 1000 int ae = mc->mc_flags & 3; 1001 1002 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1003 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1004 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1005 if (ae == 2) { /* ucast w/ proxy */ 1006 const struct ieee80211_meshcntl_ae10 *mc10 = 1007 (const struct ieee80211_meshcntl_ae10 *) mc; 1008 struct ieee80211_mesh_route *rt = 1009 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1010 /* check for proxy route to ourself */ 1011 return (rt != NULL && 1012 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1013 } else /* ucast w/o proxy */ 1014 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1015} 1016 1017static int 1018mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1019{ 1020#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1021#define HAS_SEQ(type) ((type & 0x4) == 0) 1022 struct ieee80211vap *vap = ni->ni_vap; 1023 struct ieee80211com *ic = ni->ni_ic; 1024 struct ifnet *ifp = vap->iv_ifp; 1025 struct ieee80211_frame *wh; 1026 const struct ieee80211_meshcntl *mc; 1027 int hdrspace, meshdrlen, need_tap; 1028 uint8_t dir, type, subtype, qos; 1029 uint32_t seq; 1030 uint8_t *addr; 1031 ieee80211_seq rxseq; 1032 1033 KASSERT(ni != NULL, ("null node")); 1034 ni->ni_inact = ni->ni_inact_reload; 1035 1036 need_tap = 1; /* mbuf need to be tapped. */ 1037 type = -1; /* undefined */ 1038 1039 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1040 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1041 ni->ni_macaddr, NULL, 1042 "too short (1): len %u", m->m_pkthdr.len); 1043 vap->iv_stats.is_rx_tooshort++; 1044 goto out; 1045 } 1046 /* 1047 * Bit of a cheat here, we use a pointer for a 3-address 1048 * frame format but don't reference fields past outside 1049 * ieee80211_frame_min w/o first validating the data is 1050 * present. 1051 */ 1052 wh = mtod(m, struct ieee80211_frame *); 1053 1054 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1055 IEEE80211_FC0_VERSION_0) { 1056 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1057 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1058 vap->iv_stats.is_rx_badversion++; 1059 goto err; 1060 } 1061 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1062 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1063 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1064 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1065 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1066 ni->ni_noise = nf; 1067 if (HAS_SEQ(type)) { 1068 uint8_t tid = ieee80211_gettid(wh); 1069 1070 if (IEEE80211_QOS_HAS_SEQ(wh) && 1071 TID_TO_WME_AC(tid) >= WME_AC_VI) 1072 ic->ic_wme.wme_hipri_traffic++; 1073 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1074 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1075 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1076 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1077 /* duplicate, discard */ 1078 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1079 wh->i_addr1, "duplicate", 1080 "seqno <%u,%u> fragno <%u,%u> tid %u", 1081 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1082 ni->ni_rxseqs[tid] >> 1083 IEEE80211_SEQ_SEQ_SHIFT, 1084 rxseq & IEEE80211_SEQ_FRAG_MASK, 1085 ni->ni_rxseqs[tid] & 1086 IEEE80211_SEQ_FRAG_MASK, 1087 tid); 1088 vap->iv_stats.is_rx_dup++; 1089 IEEE80211_NODE_STAT(ni, rx_dup); 1090 goto out; 1091 } 1092 ni->ni_rxseqs[tid] = rxseq; 1093 } 1094 } 1095#ifdef IEEE80211_DEBUG 1096 /* 1097 * It's easier, but too expensive, to simulate different mesh 1098 * topologies by consulting the ACL policy very early, so do this 1099 * only under DEBUG. 1100 * 1101 * NB: this check is also done upon peering link initiation. 1102 */ 1103 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1104 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1105 wh, NULL, "%s", "disallowed by ACL"); 1106 vap->iv_stats.is_rx_acl++; 1107 goto out; 1108 } 1109#endif 1110 switch (type) { 1111 case IEEE80211_FC0_TYPE_DATA: 1112 if (ni == vap->iv_bss) 1113 goto out; 1114 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1115 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1116 ni->ni_macaddr, NULL, 1117 "peer link not yet established (%d)", 1118 ni->ni_mlstate); 1119 vap->iv_stats.is_mesh_nolink++; 1120 goto out; 1121 } 1122 if (dir != IEEE80211_FC1_DIR_FROMDS && 1123 dir != IEEE80211_FC1_DIR_DSTODS) { 1124 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1125 wh, "data", "incorrect dir 0x%x", dir); 1126 vap->iv_stats.is_rx_wrongdir++; 1127 goto err; 1128 } 1129 /* pull up enough to get to the mesh control */ 1130 hdrspace = ieee80211_hdrspace(ic, wh); 1131 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1132 (m = m_pullup(m, hdrspace + 1133 sizeof(struct ieee80211_meshcntl))) == NULL) { 1134 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1135 ni->ni_macaddr, NULL, 1136 "data too short: expecting %u", hdrspace); 1137 vap->iv_stats.is_rx_tooshort++; 1138 goto out; /* XXX */ 1139 } 1140 /* 1141 * Now calculate the full extent of the headers. Note 1142 * mesh_decap will pull up anything we didn't get 1143 * above when it strips the 802.11 headers. 1144 */ 1145 mc = (const struct ieee80211_meshcntl *) 1146 (mtod(m, const uint8_t *) + hdrspace); 1147 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1148 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1149 hdrspace += meshdrlen; 1150 seq = LE_READ_4(mc->mc_seq); 1151 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1152 addr = wh->i_addr3; 1153 else 1154 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1155 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1156 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1157 addr, "data", "%s", "not to me"); 1158 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1159 goto out; 1160 } 1161 if (mesh_checkpseq(vap, addr, seq) != 0) { 1162 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1163 addr, "data", "duplicate mesh seqno %u ttl %u", 1164 seq, mc->mc_ttl); 1165 vap->iv_stats.is_rx_dup++; 1166 goto out; 1167 } 1168 1169 /* 1170 * Potentially forward packet. See table s36 (p140) 1171 * for the rules. XXX tap fwd'd packets not for us? 1172 */ 1173 if (dir == IEEE80211_FC1_DIR_FROMDS || 1174 !mesh_isucastforme(vap, wh, mc)) { 1175 mesh_forward(vap, m, mc); 1176 if (dir == IEEE80211_FC1_DIR_DSTODS) 1177 goto out; 1178 /* NB: fall thru to deliver mcast frames locally */ 1179 } 1180 1181 /* 1182 * Save QoS bits for use below--before we strip the header. 1183 */ 1184 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1185 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1186 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1187 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1188 } else 1189 qos = 0; 1190 /* 1191 * Next up, any fragmentation. 1192 */ 1193 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1194 m = ieee80211_defrag(ni, m, hdrspace); 1195 if (m == NULL) { 1196 /* Fragment dropped or frame not complete yet */ 1197 goto out; 1198 } 1199 } 1200 wh = NULL; /* no longer valid, catch any uses */ 1201 1202 if (ieee80211_radiotap_active_vap(vap)) 1203 ieee80211_radiotap_rx(vap, m); 1204 need_tap = 0; 1205 1206 /* 1207 * Finally, strip the 802.11 header. 1208 */ 1209 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1210 if (m == NULL) { 1211 /* XXX mask bit to check for both */ 1212 /* don't count Null data frames as errors */ 1213 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1214 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1215 goto out; 1216 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1217 ni->ni_macaddr, "data", "%s", "decap error"); 1218 vap->iv_stats.is_rx_decap++; 1219 IEEE80211_NODE_STAT(ni, rx_decap); 1220 goto err; 1221 } 1222 if (qos & IEEE80211_QOS_AMSDU) { 1223 m = ieee80211_decap_amsdu(ni, m); 1224 if (m == NULL) 1225 return IEEE80211_FC0_TYPE_DATA; 1226 } 1227 ieee80211_deliver_data(vap, ni, m); 1228 return type; 1229 case IEEE80211_FC0_TYPE_MGT: 1230 vap->iv_stats.is_rx_mgmt++; 1231 IEEE80211_NODE_STAT(ni, rx_mgmt); 1232 if (dir != IEEE80211_FC1_DIR_NODS) { 1233 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1234 wh, "mgt", "incorrect dir 0x%x", dir); 1235 vap->iv_stats.is_rx_wrongdir++; 1236 goto err; 1237 } 1238 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1239 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1240 ni->ni_macaddr, "mgt", "too short: len %u", 1241 m->m_pkthdr.len); 1242 vap->iv_stats.is_rx_tooshort++; 1243 goto out; 1244 } 1245#ifdef IEEE80211_DEBUG 1246 if ((ieee80211_msg_debug(vap) && 1247 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1248 ieee80211_msg_dumppkts(vap)) { 1249 if_printf(ifp, "received %s from %s rssi %d\n", 1250 ieee80211_mgt_subtype_name[subtype >> 1251 IEEE80211_FC0_SUBTYPE_SHIFT], 1252 ether_sprintf(wh->i_addr2), rssi); 1253 } 1254#endif 1255 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1256 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1257 wh, NULL, "%s", "WEP set but not permitted"); 1258 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1259 goto out; 1260 } 1261 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1262 goto out; 1263 case IEEE80211_FC0_TYPE_CTL: 1264 vap->iv_stats.is_rx_ctl++; 1265 IEEE80211_NODE_STAT(ni, rx_ctrl); 1266 goto out; 1267 default: 1268 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1269 wh, "bad", "frame type 0x%x", type); 1270 /* should not come here */ 1271 break; 1272 } 1273err: 1274 ifp->if_ierrors++; 1275out: 1276 if (m != NULL) { 1277 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1278 ieee80211_radiotap_rx(vap, m); 1279 m_freem(m); 1280 } 1281 return type; 1282} 1283 1284static void 1285mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1286 int rssi, int nf) 1287{ 1288 struct ieee80211vap *vap = ni->ni_vap; 1289 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1290 struct ieee80211com *ic = ni->ni_ic; 1291 struct ieee80211_frame *wh; 1292 uint8_t *frm, *efrm; 1293 1294 wh = mtod(m0, struct ieee80211_frame *); 1295 frm = (uint8_t *)&wh[1]; 1296 efrm = mtod(m0, uint8_t *) + m0->m_len; 1297 switch (subtype) { 1298 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1299 case IEEE80211_FC0_SUBTYPE_BEACON: 1300 { 1301 struct ieee80211_scanparams scan; 1302 /* 1303 * We process beacon/probe response 1304 * frames to discover neighbors. 1305 */ 1306 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1307 return; 1308 /* 1309 * Count frame now that we know it's to be processed. 1310 */ 1311 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1312 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1313 IEEE80211_NODE_STAT(ni, rx_beacons); 1314 } else 1315 IEEE80211_NODE_STAT(ni, rx_proberesp); 1316 /* 1317 * If scanning, just pass information to the scan module. 1318 */ 1319 if (ic->ic_flags & IEEE80211_F_SCAN) { 1320 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1321 /* 1322 * Actively scanning a channel marked passive; 1323 * send a probe request now that we know there 1324 * is 802.11 traffic present. 1325 * 1326 * XXX check if the beacon we recv'd gives 1327 * us what we need and suppress the probe req 1328 */ 1329 ieee80211_probe_curchan(vap, 1); 1330 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1331 } 1332 ieee80211_add_scan(vap, &scan, wh, 1333 subtype, rssi, nf); 1334 return; 1335 } 1336 1337 /* The rest of this code assumes we are running */ 1338 if (vap->iv_state != IEEE80211_S_RUN) 1339 return; 1340 /* 1341 * Ignore non-mesh STAs. 1342 */ 1343 if ((scan.capinfo & 1344 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1345 scan.meshid == NULL || scan.meshconf == NULL) { 1346 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1347 wh, "beacon", "%s", "not a mesh sta"); 1348 vap->iv_stats.is_mesh_wrongmesh++; 1349 return; 1350 } 1351 /* 1352 * Ignore STAs for other mesh networks. 1353 */ 1354 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1355 mesh_verify_meshconf(vap, scan.meshconf)) { 1356 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1357 wh, "beacon", "%s", "not for our mesh"); 1358 vap->iv_stats.is_mesh_wrongmesh++; 1359 return; 1360 } 1361 /* 1362 * Peer only based on the current ACL policy. 1363 */ 1364 if (vap->iv_acl != NULL && 1365 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1366 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1367 wh, NULL, "%s", "disallowed by ACL"); 1368 vap->iv_stats.is_rx_acl++; 1369 return; 1370 } 1371 /* 1372 * Do neighbor discovery. 1373 */ 1374 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1375 /* 1376 * Create a new entry in the neighbor table. 1377 */ 1378 ni = ieee80211_add_neighbor(vap, wh, &scan); 1379 } 1380 /* 1381 * Automatically peer with discovered nodes if possible. 1382 * XXX backoff on repeated failure 1383 */ 1384 if (ni != vap->iv_bss && 1385 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1386 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1387 uint16_t args[1]; 1388 1389 ni->ni_mlpid = mesh_generateid(vap); 1390 if (ni->ni_mlpid == 0) 1391 return; 1392 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1393 args[0] = ni->ni_mlpid; 1394 ieee80211_send_action(ni, 1395 IEEE80211_ACTION_CAT_MESHPEERING, 1396 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1397 ni->ni_mlrcnt = 0; 1398 mesh_peer_timeout_setup(ni); 1399 } 1400 break; 1401 } 1402 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1403 { 1404 uint8_t *ssid, *meshid, *rates, *xrates; 1405 uint8_t *sfrm; 1406 1407 if (vap->iv_state != IEEE80211_S_RUN) { 1408 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1409 wh, NULL, "wrong state %s", 1410 ieee80211_state_name[vap->iv_state]); 1411 vap->iv_stats.is_rx_mgtdiscard++; 1412 return; 1413 } 1414 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1415 /* frame must be directed */ 1416 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1417 wh, NULL, "%s", "not unicast"); 1418 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1419 return; 1420 } 1421 /* 1422 * prreq frame format 1423 * [tlv] ssid 1424 * [tlv] supported rates 1425 * [tlv] extended supported rates 1426 * [tlv] mesh id 1427 */ 1428 ssid = meshid = rates = xrates = NULL; 1429 sfrm = frm; 1430 while (efrm - frm > 1) { 1431 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1432 switch (*frm) { 1433 case IEEE80211_ELEMID_SSID: 1434 ssid = frm; 1435 break; 1436 case IEEE80211_ELEMID_RATES: 1437 rates = frm; 1438 break; 1439 case IEEE80211_ELEMID_XRATES: 1440 xrates = frm; 1441 break; 1442 case IEEE80211_ELEMID_MESHID: 1443 meshid = frm; 1444 break; 1445 } 1446 frm += frm[2] + 2; 1447 } 1448 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1449 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1450 if (xrates != NULL) 1451 IEEE80211_VERIFY_ELEMENT(xrates, 1452 IEEE80211_RATE_MAXSIZE - rates[1], return); 1453 if (meshid != NULL) 1454 IEEE80211_VERIFY_ELEMENT(meshid, 1455 IEEE80211_MESHID_LEN, return); 1456 /* NB: meshid, not ssid */ 1457 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1458 1459 /* XXX find a better class or define it's own */ 1460 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1461 "%s", "recv probe req"); 1462 /* 1463 * Some legacy 11b clients cannot hack a complete 1464 * probe response frame. When the request includes 1465 * only a bare-bones rate set, communicate this to 1466 * the transmit side. 1467 */ 1468 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1469 break; 1470 } 1471 case IEEE80211_FC0_SUBTYPE_ACTION: 1472 if (vap->iv_state != IEEE80211_S_RUN) { 1473 vap->iv_stats.is_rx_mgtdiscard++; 1474 break; 1475 } 1476 /* 1477 * We received an action for an unknown neighbor. 1478 * XXX: wait for it to beacon or create ieee80211_node? 1479 */ 1480 if (ni == vap->iv_bss) { 1481 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1482 wh, NULL, "%s", "unknown node"); 1483 vap->iv_stats.is_rx_mgtdiscard++; 1484 break; 1485 } 1486 /* 1487 * Discard if not for us. 1488 */ 1489 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1490 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1491 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1492 wh, NULL, "%s", "not for me"); 1493 vap->iv_stats.is_rx_mgtdiscard++; 1494 break; 1495 } 1496 /* XXX parse_action is a bit useless now */ 1497 if (ieee80211_parse_action(ni, m0) == 0) 1498 ic->ic_recv_action(ni, wh, frm, efrm); 1499 break; 1500 case IEEE80211_FC0_SUBTYPE_AUTH: 1501 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1502 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1503 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1504 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1505 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1506 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1507 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1508 wh, NULL, "%s", "not handled"); 1509 vap->iv_stats.is_rx_mgtdiscard++; 1510 return; 1511 default: 1512 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1513 wh, "mgt", "subtype 0x%x not handled", subtype); 1514 vap->iv_stats.is_rx_badsubtype++; 1515 break; 1516 } 1517} 1518 1519/* 1520 * Parse meshpeering action ie's for open+confirm frames; the 1521 * important bits are returned in the supplied structure. 1522 */ 1523static const struct ieee80211_meshpeer_ie * 1524mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1525 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1526 const uint8_t *frm, const uint8_t *efrm, 1527 struct ieee80211_meshpeer_ie *mp) 1528{ 1529 struct ieee80211vap *vap = ni->ni_vap; 1530 const struct ieee80211_meshpeer_ie *mpie; 1531 const uint8_t *meshid, *meshconf, *meshpeerver, *meshpeer; 1532 1533 meshid = meshconf = meshpeerver = meshpeer = NULL; 1534 while (efrm - frm > 1) { 1535 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1536 switch (*frm) { 1537 case IEEE80211_ELEMID_MESHPEERVER: 1538 meshpeerver = frm; 1539 break; 1540 case IEEE80211_ELEMID_MESHID: 1541 meshid = frm; 1542 break; 1543 case IEEE80211_ELEMID_MESHCONF: 1544 meshconf = frm; 1545 break; 1546 case IEEE80211_ELEMID_MESHPEER: 1547 meshpeer = frm; 1548 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1549 memset(mp, 0, sizeof(*mp)); 1550 mp->peer_subtype = mpie->peer_subtype; 1551 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1552 /* NB: peer link ID is optional on these frames */ 1553 if (mpie->peer_subtype == 1554 IEEE80211_MESH_PEER_LINK_CLOSE && 1555 mpie->peer_len == 5) { 1556 mp->peer_linkid = 0; 1557 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1558 } else { 1559 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1560 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1561 } 1562 break; 1563 } 1564 frm += frm[1] + 2; 1565 } 1566 1567 /* 1568 * Verify the contents of the frame. Action frames with 1569 * close subtype don't have a Mesh Configuration IE. 1570 * If if fails validation, close the peer link. 1571 */ 1572 KASSERT(meshpeer != NULL && mp->peer_subtype != 1573 IEEE80211_ACTION_MESHPEERING_CLOSE, ("parsing close action")); 1574 1575 if (mesh_verify_meshpeerver(vap, meshpeerver) || 1576 mesh_verify_meshid(vap, meshid) || 1577 mesh_verify_meshpeer(vap, meshpeer) || 1578 mesh_verify_meshconf(vap, meshconf)) { 1579 uint16_t args[3]; 1580 1581 IEEE80211_DISCARD(vap, 1582 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1583 wh, NULL, "%s", "not for our mesh"); 1584 vap->iv_stats.is_rx_mgtdiscard++; 1585 switch (ni->ni_mlstate) { 1586 case IEEE80211_NODE_MESH_IDLE: 1587 case IEEE80211_NODE_MESH_ESTABLISHED: 1588 case IEEE80211_NODE_MESH_HOLDING: 1589 /* ignore */ 1590 break; 1591 case IEEE80211_NODE_MESH_OPENSNT: 1592 case IEEE80211_NODE_MESH_OPENRCV: 1593 case IEEE80211_NODE_MESH_CONFIRMRCV: 1594 args[0] = ni->ni_mlpid; 1595 args[1] = ni->ni_mllid; 1596 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1597 ieee80211_send_action(ni, 1598 IEEE80211_ACTION_CAT_MESHPEERING, 1599 IEEE80211_ACTION_MESHPEERING_CLOSE, 1600 args); 1601 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1602 mesh_peer_timeout_setup(ni); 1603 break; 1604 } 1605 return NULL; 1606 } 1607 return (const struct ieee80211_meshpeer_ie *) mp; 1608} 1609 1610static int 1611mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1612 const struct ieee80211_frame *wh, 1613 const uint8_t *frm, const uint8_t *efrm) 1614{ 1615 struct ieee80211vap *vap = ni->ni_vap; 1616 struct ieee80211_meshpeer_ie ie; 1617 const struct ieee80211_meshpeer_ie *meshpeer; 1618 uint16_t args[3]; 1619 1620 /* +2+2 for action + code + capabilites */ 1621 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie); 1622 if (meshpeer == NULL) { 1623 return 0; 1624 } 1625 1626 /* XXX move up */ 1627 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1628 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1629 1630 switch (ni->ni_mlstate) { 1631 case IEEE80211_NODE_MESH_IDLE: 1632 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1633 ni->ni_mllid = meshpeer->peer_llinkid; 1634 ni->ni_mlpid = mesh_generateid(vap); 1635 if (ni->ni_mlpid == 0) 1636 return 0; /* XXX */ 1637 args[0] = ni->ni_mlpid; 1638 /* Announce we're open too... */ 1639 ieee80211_send_action(ni, 1640 IEEE80211_ACTION_CAT_MESHPEERING, 1641 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1642 /* ...and confirm the link. */ 1643 args[0] = ni->ni_mlpid; 1644 args[1] = ni->ni_mllid; 1645 ieee80211_send_action(ni, 1646 IEEE80211_ACTION_CAT_MESHPEERING, 1647 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1648 args); 1649 mesh_peer_timeout_setup(ni); 1650 break; 1651 case IEEE80211_NODE_MESH_OPENRCV: 1652 /* Wrong Link ID */ 1653 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1654 args[0] = ni->ni_mllid; 1655 args[1] = ni->ni_mlpid; 1656 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1657 ieee80211_send_action(ni, 1658 IEEE80211_ACTION_CAT_MESHPEERING, 1659 IEEE80211_ACTION_MESHPEERING_CLOSE, 1660 args); 1661 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1662 mesh_peer_timeout_setup(ni); 1663 break; 1664 } 1665 /* Duplicate open, confirm again. */ 1666 args[0] = ni->ni_mlpid; 1667 args[1] = ni->ni_mllid; 1668 ieee80211_send_action(ni, 1669 IEEE80211_ACTION_CAT_MESHPEERING, 1670 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1671 args); 1672 break; 1673 case IEEE80211_NODE_MESH_OPENSNT: 1674 ni->ni_mllid = meshpeer->peer_llinkid; 1675 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1676 args[0] = ni->ni_mlpid; 1677 args[1] = ni->ni_mllid; 1678 ieee80211_send_action(ni, 1679 IEEE80211_ACTION_CAT_MESHPEERING, 1680 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1681 args); 1682 /* NB: don't setup/clear any timeout */ 1683 break; 1684 case IEEE80211_NODE_MESH_CONFIRMRCV: 1685 if (ni->ni_mlpid != meshpeer->peer_linkid || 1686 ni->ni_mllid != meshpeer->peer_llinkid) { 1687 args[0] = ni->ni_mlpid; 1688 args[1] = ni->ni_mllid; 1689 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1690 ieee80211_send_action(ni, 1691 IEEE80211_ACTION_CAT_MESHPEERING, 1692 IEEE80211_ACTION_MESHPEERING_CLOSE, 1693 args); 1694 mesh_linkchange(ni, 1695 IEEE80211_NODE_MESH_HOLDING); 1696 mesh_peer_timeout_setup(ni); 1697 break; 1698 } 1699 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1700 ni->ni_mllid = meshpeer->peer_llinkid; 1701 args[0] = ni->ni_mlpid; 1702 args[1] = ni->ni_mllid; 1703 ieee80211_send_action(ni, 1704 IEEE80211_ACTION_CAT_MESHPEERING, 1705 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1706 args); 1707 mesh_peer_timeout_stop(ni); 1708 break; 1709 case IEEE80211_NODE_MESH_ESTABLISHED: 1710 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1711 args[0] = ni->ni_mllid; 1712 args[1] = ni->ni_mlpid; 1713 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1714 ieee80211_send_action(ni, 1715 IEEE80211_ACTION_CAT_MESHPEERING, 1716 IEEE80211_ACTION_MESHPEERING_CLOSE, 1717 args); 1718 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1719 mesh_peer_timeout_setup(ni); 1720 break; 1721 } 1722 args[0] = ni->ni_mlpid; 1723 args[1] = ni->ni_mllid; 1724 ieee80211_send_action(ni, 1725 IEEE80211_ACTION_CAT_MESHPEERING, 1726 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1727 args); 1728 break; 1729 case IEEE80211_NODE_MESH_HOLDING: 1730 args[0] = ni->ni_mlpid; 1731 args[1] = meshpeer->peer_llinkid; 1732 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1733 ieee80211_send_action(ni, 1734 IEEE80211_ACTION_CAT_MESHPEERING, 1735 IEEE80211_ACTION_MESHPEERING_CLOSE, 1736 args); 1737 break; 1738 } 1739 return 0; 1740} 1741 1742static int 1743mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1744 const struct ieee80211_frame *wh, 1745 const uint8_t *frm, const uint8_t *efrm) 1746{ 1747 struct ieee80211vap *vap = ni->ni_vap; 1748 struct ieee80211_meshpeer_ie ie; 1749 const struct ieee80211_meshpeer_ie *meshpeer; 1750 uint16_t args[3]; 1751 1752 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1753 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie); 1754 if (meshpeer == NULL) { 1755 return 0; 1756 } 1757 1758 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1759 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1760 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1761 1762 switch (ni->ni_mlstate) { 1763 case IEEE80211_NODE_MESH_OPENRCV: 1764 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1765 mesh_peer_timeout_stop(ni); 1766 break; 1767 case IEEE80211_NODE_MESH_OPENSNT: 1768 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1769 break; 1770 case IEEE80211_NODE_MESH_HOLDING: 1771 args[0] = ni->ni_mlpid; 1772 args[1] = meshpeer->peer_llinkid; 1773 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1774 ieee80211_send_action(ni, 1775 IEEE80211_ACTION_CAT_MESHPEERING, 1776 IEEE80211_ACTION_MESHPEERING_CLOSE, 1777 args); 1778 break; 1779 case IEEE80211_NODE_MESH_CONFIRMRCV: 1780 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1781 args[0] = ni->ni_mlpid; 1782 args[1] = ni->ni_mllid; 1783 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1784 ieee80211_send_action(ni, 1785 IEEE80211_ACTION_CAT_MESHPEERING, 1786 IEEE80211_ACTION_MESHPEERING_CLOSE, 1787 args); 1788 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1789 mesh_peer_timeout_setup(ni); 1790 } 1791 break; 1792 default: 1793 IEEE80211_DISCARD(vap, 1794 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1795 wh, NULL, "received confirm in invalid state %d", 1796 ni->ni_mlstate); 1797 vap->iv_stats.is_rx_mgtdiscard++; 1798 break; 1799 } 1800 return 0; 1801} 1802 1803static int 1804mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1805 const struct ieee80211_frame *wh, 1806 const uint8_t *frm, const uint8_t *efrm) 1807{ 1808 uint16_t args[3]; 1809 1810 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1811 ni, "%s", "recv PEER CLOSE"); 1812 1813 switch (ni->ni_mlstate) { 1814 case IEEE80211_NODE_MESH_IDLE: 1815 /* ignore */ 1816 break; 1817 case IEEE80211_NODE_MESH_OPENRCV: 1818 case IEEE80211_NODE_MESH_OPENSNT: 1819 case IEEE80211_NODE_MESH_CONFIRMRCV: 1820 case IEEE80211_NODE_MESH_ESTABLISHED: 1821 args[0] = ni->ni_mlpid; 1822 args[1] = ni->ni_mllid; 1823 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1824 ieee80211_send_action(ni, 1825 IEEE80211_ACTION_CAT_MESHPEERING, 1826 IEEE80211_ACTION_MESHPEERING_CLOSE, 1827 args); 1828 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1829 mesh_peer_timeout_setup(ni); 1830 break; 1831 case IEEE80211_NODE_MESH_HOLDING: 1832 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1833 mesh_peer_timeout_setup(ni); 1834 break; 1835 } 1836 return 0; 1837} 1838 1839/* 1840 * Link Metric handling. 1841 */ 1842static int 1843mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1844 const struct ieee80211_frame *wh, 1845 const uint8_t *frm, const uint8_t *efrm) 1846{ 1847 uint32_t metric; 1848 1849 metric = mesh_airtime_calc(ni); 1850 ieee80211_send_action(ni, 1851 IEEE80211_ACTION_CAT_MESHLMETRIC, 1852 IEEE80211_ACTION_MESHLMETRIC_REP, 1853 &metric); 1854 return 0; 1855} 1856 1857static int 1858mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1859 const struct ieee80211_frame *wh, 1860 const uint8_t *frm, const uint8_t *efrm) 1861{ 1862 return 0; 1863} 1864 1865static int 1866mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1867{ 1868 struct ieee80211_bpf_params params; 1869 1870 memset(¶ms, 0, sizeof(params)); 1871 params.ibp_pri = WME_AC_VO; 1872 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1873 /* XXX ucast/mcast */ 1874 params.ibp_try0 = ni->ni_txparms->maxretry; 1875 params.ibp_power = ni->ni_txpower; 1876 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1877 ¶ms); 1878} 1879 1880#define ADDSHORT(frm, v) do { \ 1881 frm[0] = (v) & 0xff; \ 1882 frm[1] = (v) >> 8; \ 1883 frm += 2; \ 1884} while (0) 1885#define ADDWORD(frm, v) do { \ 1886 frm[0] = (v) & 0xff; \ 1887 frm[1] = ((v) >> 8) & 0xff; \ 1888 frm[2] = ((v) >> 16) & 0xff; \ 1889 frm[3] = ((v) >> 24) & 0xff; \ 1890 frm += 4; \ 1891} while (0) 1892 1893static int 1894mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1895 int category, int action, void *args0) 1896{ 1897 struct ieee80211vap *vap = ni->ni_vap; 1898 struct ieee80211com *ic = ni->ni_ic; 1899 uint16_t *args = args0; 1900 const struct ieee80211_rateset *rs; 1901 struct mbuf *m; 1902 uint8_t *frm; 1903 1904 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1905 "send PEER OPEN action: localid 0x%x", args[0]); 1906 1907 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1908 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1909 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1910 ieee80211_ref_node(ni); 1911 1912 m = ieee80211_getmgtframe(&frm, 1913 ic->ic_headroom + sizeof(struct ieee80211_frame), 1914 sizeof(uint16_t) /* action+category */ 1915 + sizeof(uint16_t) /* capabilites */ 1916 + sizeof(struct ieee80211_meshpeerver_ie) 1917 + 2 + IEEE80211_RATE_SIZE 1918 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1919 + 2 + IEEE80211_MESHID_LEN 1920 + sizeof(struct ieee80211_meshconf_ie) 1921 + sizeof(struct ieee80211_meshpeer_ie) 1922 ); 1923 if (m != NULL) { 1924 /* 1925 * mesh peer open action frame format: 1926 * [1] category 1927 * [1] action 1928 * [2] capabilities 1929 * [tlv] mesh peer protocol version 1930 * [tlv] rates 1931 * [tlv] xrates 1932 * [tlv] mesh id 1933 * [tlv] mesh conf 1934 * [tlv] mesh peer link mgmt 1935 */ 1936 *frm++ = category; 1937 *frm++ = action; 1938 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1939 frm = ieee80211_add_meshpeerver(frm, vap); 1940 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1941 frm = ieee80211_add_rates(frm, rs); 1942 frm = ieee80211_add_xrates(frm, rs); 1943 frm = ieee80211_add_meshid(frm, vap); 1944 frm = ieee80211_add_meshconf(frm, vap); 1945 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1946 args[0], 0, 0); 1947 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1948 return mesh_send_action(ni, m); 1949 } else { 1950 vap->iv_stats.is_tx_nobuf++; 1951 ieee80211_free_node(ni); 1952 return ENOMEM; 1953 } 1954} 1955 1956static int 1957mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1958 int category, int action, void *args0) 1959{ 1960 struct ieee80211vap *vap = ni->ni_vap; 1961 struct ieee80211com *ic = ni->ni_ic; 1962 uint16_t *args = args0; 1963 const struct ieee80211_rateset *rs; 1964 struct mbuf *m; 1965 uint8_t *frm; 1966 1967 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1968 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1969 args[0], args[1]); 1970 1971 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1972 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1973 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1974 ieee80211_ref_node(ni); 1975 1976 m = ieee80211_getmgtframe(&frm, 1977 ic->ic_headroom + sizeof(struct ieee80211_frame), 1978 sizeof(uint16_t) /* action+category */ 1979 + sizeof(uint16_t) /* capabilites */ 1980 + sizeof(uint16_t) /* status code */ 1981 + sizeof(uint16_t) /* AID */ 1982 + sizeof(struct ieee80211_meshpeerver_ie) 1983 + 2 + IEEE80211_RATE_SIZE 1984 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1985 + 2 + IEEE80211_MESHID_LEN 1986 + sizeof(struct ieee80211_meshconf_ie) 1987 + sizeof(struct ieee80211_meshpeer_ie) 1988 ); 1989 if (m != NULL) { 1990 /* 1991 * mesh peer confirm action frame format: 1992 * [1] category 1993 * [1] action 1994 * [2] capabilities 1995 * [2] status code 1996 * [2] association id (peer ID) 1997 * [tlv] mesh peer protocol version 1998 * [tlv] rates 1999 * [tlv] xrates 2000 * [tlv] mesh id 2001 * [tlv] mesh conf 2002 * [tlv] mesh peer link mgmt 2003 */ 2004 *frm++ = category; 2005 *frm++ = action; 2006 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2007 ADDSHORT(frm, 0); /* status code */ 2008 ADDSHORT(frm, args[1]); /* AID */ 2009 frm = ieee80211_add_meshpeerver(frm, vap); 2010 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2011 frm = ieee80211_add_rates(frm, rs); 2012 frm = ieee80211_add_xrates(frm, rs); 2013 frm = ieee80211_add_meshid(frm, vap); 2014 frm = ieee80211_add_meshconf(frm, vap); 2015 frm = ieee80211_add_meshpeer(frm, 2016 IEEE80211_MESH_PEER_LINK_CONFIRM, 2017 args[0], args[1], 0); 2018 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2019 return mesh_send_action(ni, m); 2020 } else { 2021 vap->iv_stats.is_tx_nobuf++; 2022 ieee80211_free_node(ni); 2023 return ENOMEM; 2024 } 2025} 2026 2027static int 2028mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2029 int category, int action, void *args0) 2030{ 2031 struct ieee80211vap *vap = ni->ni_vap; 2032 struct ieee80211com *ic = ni->ni_ic; 2033 uint16_t *args = args0; 2034 struct mbuf *m; 2035 uint8_t *frm; 2036 2037 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2038 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2039 args[0], args[1], args[2]); 2040 2041 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2042 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2043 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2044 ieee80211_ref_node(ni); 2045 2046 m = ieee80211_getmgtframe(&frm, 2047 ic->ic_headroom + sizeof(struct ieee80211_frame), 2048 sizeof(uint16_t) /* action+category */ 2049 + sizeof(uint16_t) /* reason code */ 2050 + sizeof(struct ieee80211_meshpeerver_ie) 2051 + 2 + IEEE80211_MESHID_LEN 2052 + sizeof(struct ieee80211_meshpeer_ie) 2053 ); 2054 if (m != NULL) { 2055 /* 2056 * mesh peer close action frame format: 2057 * [1] category 2058 * [1] action 2059 * [2] reason code 2060 * [tlv] mesh peer protocol version 2061 * [tlv] mesh id 2062 * [tlv] mesh peer link mgmt 2063 */ 2064 *frm++ = category; 2065 *frm++ = action; 2066 ADDSHORT(frm, args[2]); /* reason code */ 2067 frm = ieee80211_add_meshpeerver(frm, vap); 2068 frm = ieee80211_add_meshid(frm, vap); 2069 frm = ieee80211_add_meshpeer(frm, 2070 IEEE80211_MESH_PEER_LINK_CLOSE, 2071 args[0], args[1], args[2]); 2072 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2073 return mesh_send_action(ni, m); 2074 } else { 2075 vap->iv_stats.is_tx_nobuf++; 2076 ieee80211_free_node(ni); 2077 return ENOMEM; 2078 } 2079} 2080 2081static int 2082mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2083 int category, int action, void *arg0) 2084{ 2085 struct ieee80211vap *vap = ni->ni_vap; 2086 struct ieee80211com *ic = ni->ni_ic; 2087 struct mbuf *m; 2088 uint8_t *frm; 2089 2090 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2091 "%s", "send LINK METRIC REQUEST action"); 2092 2093 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2094 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2095 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2096 ieee80211_ref_node(ni); 2097 2098 m = ieee80211_getmgtframe(&frm, 2099 ic->ic_headroom + sizeof(struct ieee80211_frame), 2100 sizeof(uint16_t) /* action+category */ 2101 ); 2102 if (m != NULL) { 2103 /* 2104 * mesh link metric request 2105 * [1] category 2106 * [1] action 2107 */ 2108 *frm++ = category; 2109 *frm++ = action; 2110 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2111 return mesh_send_action(ni, m); 2112 } else { 2113 vap->iv_stats.is_tx_nobuf++; 2114 ieee80211_free_node(ni); 2115 return ENOMEM; 2116 } 2117} 2118 2119static int 2120mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2121 int category, int action, void *args0) 2122{ 2123 struct ieee80211vap *vap = ni->ni_vap; 2124 struct ieee80211com *ic = ni->ni_ic; 2125 uint32_t *metric = args0; 2126 struct mbuf *m; 2127 uint8_t *frm; 2128 2129 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2130 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2131 2132 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2133 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2134 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2135 ieee80211_ref_node(ni); 2136 2137 m = ieee80211_getmgtframe(&frm, 2138 ic->ic_headroom + sizeof(struct ieee80211_frame), 2139 sizeof(uint16_t) /* action+category */ 2140 + sizeof(struct ieee80211_meshlmetric_ie) 2141 ); 2142 if (m != NULL) { 2143 /* 2144 * mesh link metric reply 2145 * [1] category 2146 * [1] action 2147 * [tlv] mesh link metric 2148 */ 2149 *frm++ = category; 2150 *frm++ = action; 2151 frm = ieee80211_add_meshlmetric(frm, *metric); 2152 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2153 return mesh_send_action(ni, m); 2154 } else { 2155 vap->iv_stats.is_tx_nobuf++; 2156 ieee80211_free_node(ni); 2157 return ENOMEM; 2158 } 2159} 2160 2161static void 2162mesh_peer_timeout_setup(struct ieee80211_node *ni) 2163{ 2164 switch (ni->ni_mlstate) { 2165 case IEEE80211_NODE_MESH_HOLDING: 2166 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2167 break; 2168 case IEEE80211_NODE_MESH_CONFIRMRCV: 2169 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2170 break; 2171 case IEEE80211_NODE_MESH_IDLE: 2172 ni->ni_mltval = 0; 2173 break; 2174 default: 2175 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2176 break; 2177 } 2178 if (ni->ni_mltval) 2179 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2180 mesh_peer_timeout_cb, ni); 2181} 2182 2183/* 2184 * Same as above but backoffs timer statisically 50%. 2185 */ 2186static void 2187mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2188{ 2189 uint32_t r; 2190 2191 r = arc4random(); 2192 ni->ni_mltval += r % ni->ni_mltval; 2193 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2194 ni); 2195} 2196 2197static __inline void 2198mesh_peer_timeout_stop(struct ieee80211_node *ni) 2199{ 2200 callout_drain(&ni->ni_mltimer); 2201} 2202 2203/* 2204 * Mesh Peer Link Management FSM timeout handling. 2205 */ 2206static void 2207mesh_peer_timeout_cb(void *arg) 2208{ 2209 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2210 uint16_t args[3]; 2211 2212 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2213 ni, "mesh link timeout, state %d, retry counter %d", 2214 ni->ni_mlstate, ni->ni_mlrcnt); 2215 2216 switch (ni->ni_mlstate) { 2217 case IEEE80211_NODE_MESH_IDLE: 2218 case IEEE80211_NODE_MESH_ESTABLISHED: 2219 break; 2220 case IEEE80211_NODE_MESH_OPENSNT: 2221 case IEEE80211_NODE_MESH_OPENRCV: 2222 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2223 args[0] = ni->ni_mlpid; 2224 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2225 ieee80211_send_action(ni, 2226 IEEE80211_ACTION_CAT_MESHPEERING, 2227 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2228 ni->ni_mlrcnt = 0; 2229 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2230 mesh_peer_timeout_setup(ni); 2231 } else { 2232 args[0] = ni->ni_mlpid; 2233 ieee80211_send_action(ni, 2234 IEEE80211_ACTION_CAT_MESHPEERING, 2235 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2236 ni->ni_mlrcnt++; 2237 mesh_peer_timeout_backoff(ni); 2238 } 2239 break; 2240 case IEEE80211_NODE_MESH_CONFIRMRCV: 2241 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2242 args[0] = ni->ni_mlpid; 2243 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2244 ieee80211_send_action(ni, 2245 IEEE80211_ACTION_CAT_MESHPEERING, 2246 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2247 ni->ni_mlrcnt = 0; 2248 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2249 mesh_peer_timeout_setup(ni); 2250 } else { 2251 ni->ni_mlrcnt++; 2252 mesh_peer_timeout_setup(ni); 2253 } 2254 break; 2255 case IEEE80211_NODE_MESH_HOLDING: 2256 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2257 break; 2258 } 2259} 2260 2261static int 2262mesh_verify_meshpeerver(struct ieee80211vap *vap, const uint8_t *ie) 2263{ 2264 static const uint8_t peer[4] = IEEE80211_MESHPEERVER_PEER; 2265 const struct ieee80211_meshpeerver_ie *meshpeerver = 2266 (const struct ieee80211_meshpeerver_ie *) ie; 2267 2268 if (meshpeerver->peerver_len != 2269 sizeof(struct ieee80211_meshpeerver_ie) - 2) 2270 return 1; 2271 return memcmp(meshpeerver->peerver_proto, peer, 4); 2272} 2273 2274static int 2275mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2276{ 2277 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2278 2279 if (ie == NULL || ie[1] != ms->ms_idlen) 2280 return 1; 2281 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2282} 2283 2284/* 2285 * Check if we are using the same algorithms for this mesh. 2286 */ 2287static int 2288mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2289{ 2290 static const uint8_t null[4] = IEEE80211_MESHCONF_NULL; 2291 const struct ieee80211_meshconf_ie *meshconf = 2292 (const struct ieee80211_meshconf_ie *) ie; 2293 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2294 2295 if (meshconf == NULL) 2296 return 1; 2297 if (meshconf->conf_ver != IEEE80211_MESHCONF_VERSION) { 2298 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2299 "wrong mesh conf version: %d\n", meshconf->conf_ver); 2300 return 1; 2301 } 2302 if (memcmp(meshconf->conf_pselid, ms->ms_ppath->mpp_ie, 4) != 0) { 2303 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2304 "unknown path selection algorithm: 0x%x%x%x%x\n", 2305 meshconf->conf_pselid[0], meshconf->conf_pselid[1], 2306 meshconf->conf_pselid[2], meshconf->conf_pselid[3]); 2307 return 1; 2308 } 2309 if (memcmp(meshconf->conf_pmetid, ms->ms_pmetric->mpm_ie, 4) != 0) { 2310 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2311 "unknown path metric algorithm: 0x%x%x%x%x\n", 2312 meshconf->conf_pmetid[0], meshconf->conf_pmetid[1], 2313 meshconf->conf_pmetid[2], meshconf->conf_pmetid[3]); 2314 return 1; 2315 } 2316 if (memcmp(meshconf->conf_ccid, null, 4) != 0) { 2317 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2318 "unknown congestion sig algorithm: 0x%x%x%x%x\n", 2319 meshconf->conf_ccid[0], meshconf->conf_ccid[1], 2320 meshconf->conf_ccid[2], meshconf->conf_ccid[3]); 2321 return 1; 2322 } 2323 if (memcmp(meshconf->conf_syncid, null, 4) != 0) { 2324 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2325 "unknown sync algorithm: 0x%x%x%x%x\n", 2326 meshconf->conf_syncid[0], meshconf->conf_syncid[1], 2327 meshconf->conf_syncid[2], meshconf->conf_syncid[3]); 2328 return 1; 2329 } 2330 if (memcmp(meshconf->conf_authid, null, 4) != 0) { 2331 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2332 "unknown auth auth algorithm: 0x%x%x%x%x\n", 2333 meshconf->conf_pselid[0], meshconf->conf_pselid[1], 2334 meshconf->conf_pselid[2], meshconf->conf_pselid[3]); 2335 return 1; 2336 } 2337 /* Not accepting peers */ 2338 if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) { 2339 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2340 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2341 return 1; 2342 } 2343 return 0; 2344} 2345 2346static int 2347mesh_verify_meshpeer(struct ieee80211vap *vap, const uint8_t *ie) 2348{ 2349 const struct ieee80211_meshpeer_ie *meshpeer = 2350 (const struct ieee80211_meshpeer_ie *) ie; 2351 2352 if (meshpeer == NULL) 2353 return 1; 2354 switch (meshpeer->peer_subtype) { 2355 case IEEE80211_MESH_PEER_LINK_OPEN: 2356 if (meshpeer->peer_len != 3) 2357 return 1; 2358 break; 2359 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2360 if (meshpeer->peer_len != 5) 2361 return 1; 2362 break; 2363 case IEEE80211_MESH_PEER_LINK_CLOSE: 2364 if (meshpeer->peer_len < 5) 2365 return 1; 2366 if (meshpeer->peer_len == 5 && meshpeer->peer_linkid != 0) 2367 return 1; 2368 if (meshpeer->peer_rcode == 0) 2369 return 1; 2370 break; 2371 } 2372 return 0; 2373} 2374 2375/* 2376 * Add a Mesh ID IE to a frame. 2377 */ 2378uint8_t * 2379ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2380{ 2381 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2382 2383 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2384 2385 *frm++ = IEEE80211_ELEMID_MESHID; 2386 *frm++ = ms->ms_idlen; 2387 memcpy(frm, ms->ms_id, ms->ms_idlen); 2388 return frm + ms->ms_idlen; 2389} 2390 2391/* 2392 * Add a Mesh Configuration IE to a frame. 2393 * For now just use HWMP routing, Airtime link metric, Null Congestion 2394 * Signaling, Null Sync Protocol and Null Authentication. 2395 */ 2396uint8_t * 2397ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2398{ 2399 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2400 static const uint8_t null[4] = IEEE80211_MESHCONF_NULL; 2401 2402 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2403 2404 *frm++ = IEEE80211_ELEMID_MESHCONF; 2405 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2406 *frm++ = IEEE80211_MESHCONF_VERSION; 2407 memcpy(frm, ms->ms_ppath->mpp_ie, 4); /* path selection */ 2408 frm += 4; 2409 memcpy(frm, ms->ms_pmetric->mpm_ie, 4); /* link metric */ 2410 frm += 4; 2411 /* XXX null for now */ 2412 memcpy(frm, null, 4); /* congestion control */ 2413 frm += 4; 2414 memcpy(frm, null, 4); /* sync */ 2415 frm += 4; 2416 memcpy(frm, null, 4); /* auth */ 2417 frm += 4; 2418 /* NB: set the number of neighbors before the rest */ 2419 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2420 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2421 *frm |= IEEE80211_MESHCONF_FORM_MP; 2422 frm += 1; 2423 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2424 *frm |= IEEE80211_MESHCONF_CAP_AP; 2425 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2426 *frm |= IEEE80211_MESHCONF_CAP_FWRD; 2427 frm += 1; 2428 return frm; 2429} 2430 2431/* 2432 * Add a Mesh Peer Protocol IE to a frame. 2433 * XXX: needs to grow support for Abbreviated Handshake 2434 */ 2435uint8_t * 2436ieee80211_add_meshpeerver(uint8_t *frm, struct ieee80211vap *vap) 2437{ 2438 static struct ieee80211_meshpeerver_ie ie = { 2439 .peerver_ie = IEEE80211_ELEMID_MESHPEERVER, 2440 .peerver_len = 4, 2441 .peerver_proto = IEEE80211_MESHPEERVER_PEER, 2442 }; 2443 2444 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2445 2446 memcpy(frm, &ie, sizeof(ie)); 2447 return frm + sizeof(ie); 2448} 2449 2450/* 2451 * Add a Mesh Peer Management IE to a frame. 2452 */ 2453uint8_t * 2454ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2455 uint16_t peerid, uint16_t reason) 2456{ 2457 KASSERT(localid != 0, ("localid == 0")); 2458 2459 *frm++ = IEEE80211_ELEMID_MESHPEER; 2460 switch (subtype) { 2461 case IEEE80211_MESH_PEER_LINK_OPEN: 2462 *frm++ = 3; /* length */ 2463 *frm++ = subtype; 2464 ADDSHORT(frm, localid); /* local ID */ 2465 break; 2466 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2467 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2468 *frm++ = 5; /* length */ 2469 *frm++ = subtype; 2470 ADDSHORT(frm, localid); /* local ID */ 2471 ADDSHORT(frm, peerid); /* peer ID */ 2472 break; 2473 case IEEE80211_MESH_PEER_LINK_CLOSE: 2474 if (peerid) 2475 *frm++ = 7; /* length */ 2476 else 2477 *frm++ = 5; /* length */ 2478 *frm++ = subtype; 2479 ADDSHORT(frm, localid); /* local ID */ 2480 if (peerid) 2481 ADDSHORT(frm, peerid); /* peer ID */ 2482 ADDSHORT(frm, reason); 2483 break; 2484 } 2485 return frm; 2486} 2487 2488/* 2489 * Compute an Airtime Link Metric for the link with this node. 2490 * 2491 * Based on Draft 3.0 spec (11B.10, p.149). 2492 */ 2493/* 2494 * Max 802.11s overhead. 2495 */ 2496#define IEEE80211_MESH_MAXOVERHEAD \ 2497 (sizeof(struct ieee80211_qosframe_addr4) \ 2498 + sizeof(struct ieee80211_meshcntl_ae11) \ 2499 + sizeof(struct llc) \ 2500 + IEEE80211_ADDR_LEN \ 2501 + IEEE80211_WEP_IVLEN \ 2502 + IEEE80211_WEP_KIDLEN \ 2503 + IEEE80211_WEP_CRCLEN \ 2504 + IEEE80211_WEP_MICLEN \ 2505 + IEEE80211_CRC_LEN) 2506uint32_t 2507mesh_airtime_calc(struct ieee80211_node *ni) 2508{ 2509#define M_BITS 8 2510#define S_FACTOR (2 * M_BITS) 2511 struct ieee80211com *ic = ni->ni_ic; 2512 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2513 const static int nbits = 8192 << M_BITS; 2514 uint32_t overhead, rate, errrate; 2515 uint64_t res; 2516 2517 /* Time to transmit a frame */ 2518 rate = ni->ni_txrate; 2519 overhead = ieee80211_compute_duration(ic->ic_rt, 2520 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2521 /* Error rate in percentage */ 2522 /* XXX assuming small failures are ok */ 2523 errrate = (((ifp->if_oerrors + 2524 ifp->if_ierrors) / 100) << M_BITS) / 100; 2525 res = (overhead + (nbits / rate)) * 2526 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2527 2528 return (uint32_t)(res >> S_FACTOR); 2529#undef M_BITS 2530#undef S_FACTOR 2531} 2532 2533/* 2534 * Add a Mesh Link Metric report IE to a frame. 2535 */ 2536uint8_t * 2537ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2538{ 2539 *frm++ = IEEE80211_ELEMID_MESHLINK; 2540 *frm++ = 4; 2541 ADDWORD(frm, metric); 2542 return frm; 2543} 2544#undef ADDSHORT 2545#undef ADDWORD 2546 2547/* 2548 * Initialize any mesh-specific node state. 2549 */ 2550void 2551ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2552{ 2553 ni->ni_flags |= IEEE80211_NODE_QOS; 2554 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2555} 2556 2557/* 2558 * Cleanup any mesh-specific node state. 2559 */ 2560void 2561ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2562{ 2563 struct ieee80211vap *vap = ni->ni_vap; 2564 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2565 2566 callout_drain(&ni->ni_mltimer); 2567 /* NB: short-circuit callbacks after mesh_vdetach */ 2568 if (vap->iv_mesh != NULL) 2569 ms->ms_ppath->mpp_peerdown(ni); 2570} 2571 2572void 2573ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2574{ 2575 ni->ni_meshidlen = ie[1]; 2576 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2577} 2578 2579/* 2580 * Setup mesh-specific node state on neighbor discovery. 2581 */ 2582void 2583ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2584 const struct ieee80211_frame *wh, 2585 const struct ieee80211_scanparams *sp) 2586{ 2587 ieee80211_parse_meshid(ni, sp->meshid); 2588} 2589 2590static int 2591mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2592{ 2593 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2594 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2595 struct ieee80211_mesh_route *rt; 2596 struct ieee80211req_mesh_route *imr; 2597 size_t len, off; 2598 uint8_t *p; 2599 int error; 2600 2601 if (vap->iv_opmode != IEEE80211_M_MBSS) 2602 return ENOSYS; 2603 2604 error = 0; 2605 switch (ireq->i_type) { 2606 case IEEE80211_IOC_MESH_ID: 2607 ireq->i_len = ms->ms_idlen; 2608 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2609 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2610 break; 2611 case IEEE80211_IOC_MESH_AP: 2612 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2613 break; 2614 case IEEE80211_IOC_MESH_FWRD: 2615 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2616 break; 2617 case IEEE80211_IOC_MESH_TTL: 2618 ireq->i_val = ms->ms_ttl; 2619 break; 2620 case IEEE80211_IOC_MESH_RTCMD: 2621 switch (ireq->i_val) { 2622 case IEEE80211_MESH_RTCMD_LIST: 2623 len = 0; 2624 MESH_RT_LOCK(ms); 2625 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2626 len += sizeof(*imr); 2627 } 2628 MESH_RT_UNLOCK(ms); 2629 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2630 ireq->i_len = len; 2631 return ENOMEM; 2632 } 2633 ireq->i_len = len; 2634 /* XXX M_WAIT? */ 2635 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2636 if (p == NULL) 2637 return ENOMEM; 2638 off = 0; 2639 MESH_RT_LOCK(ms); 2640 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2641 if (off >= len) 2642 break; 2643 imr = (struct ieee80211req_mesh_route *) 2644 (p + off); 2645 IEEE80211_ADDR_COPY(imr->imr_dest, 2646 rt->rt_dest); 2647 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2648 rt->rt_nexthop); 2649 imr->imr_metric = rt->rt_metric; 2650 imr->imr_nhops = rt->rt_nhops; 2651 imr->imr_lifetime = rt->rt_lifetime; 2652 imr->imr_lastmseq = rt->rt_lastmseq; 2653 off += sizeof(*imr); 2654 } 2655 MESH_RT_UNLOCK(ms); 2656 error = copyout(p, (uint8_t *)ireq->i_data, 2657 ireq->i_len); 2658 free(p, M_TEMP); 2659 break; 2660 case IEEE80211_MESH_RTCMD_FLUSH: 2661 case IEEE80211_MESH_RTCMD_ADD: 2662 case IEEE80211_MESH_RTCMD_DELETE: 2663 return EINVAL; 2664 default: 2665 return ENOSYS; 2666 } 2667 break; 2668 case IEEE80211_IOC_MESH_PR_METRIC: 2669 len = strlen(ms->ms_pmetric->mpm_descr); 2670 if (ireq->i_len < len) 2671 return EINVAL; 2672 ireq->i_len = len; 2673 error = copyout(ms->ms_pmetric->mpm_descr, 2674 (uint8_t *)ireq->i_data, len); 2675 break; 2676 case IEEE80211_IOC_MESH_PR_PATH: 2677 len = strlen(ms->ms_ppath->mpp_descr); 2678 if (ireq->i_len < len) 2679 return EINVAL; 2680 ireq->i_len = len; 2681 error = copyout(ms->ms_ppath->mpp_descr, 2682 (uint8_t *)ireq->i_data, len); 2683 break; 2684 default: 2685 return ENOSYS; 2686 } 2687 2688 return error; 2689} 2690IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2691 2692static int 2693mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2694{ 2695 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2696 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2697 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2698 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2699 int error; 2700 2701 if (vap->iv_opmode != IEEE80211_M_MBSS) 2702 return ENOSYS; 2703 2704 error = 0; 2705 switch (ireq->i_type) { 2706 case IEEE80211_IOC_MESH_ID: 2707 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2708 return EINVAL; 2709 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2710 if (error != 0) 2711 break; 2712 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2713 ms->ms_idlen = ireq->i_len; 2714 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2715 error = ENETRESET; 2716 break; 2717 case IEEE80211_IOC_MESH_AP: 2718 if (ireq->i_val) 2719 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2720 else 2721 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2722 error = ENETRESET; 2723 break; 2724 case IEEE80211_IOC_MESH_FWRD: 2725 if (ireq->i_val) 2726 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2727 else 2728 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2729 break; 2730 case IEEE80211_IOC_MESH_TTL: 2731 ms->ms_ttl = (uint8_t) ireq->i_val; 2732 break; 2733 case IEEE80211_IOC_MESH_RTCMD: 2734 switch (ireq->i_val) { 2735 case IEEE80211_MESH_RTCMD_LIST: 2736 return EINVAL; 2737 case IEEE80211_MESH_RTCMD_FLUSH: 2738 ieee80211_mesh_rt_flush(vap); 2739 break; 2740 case IEEE80211_MESH_RTCMD_ADD: 2741 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2742 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2743 return EINVAL; 2744 error = copyin(ireq->i_data, &tmpaddr, 2745 IEEE80211_ADDR_LEN); 2746 if (error == 0) 2747 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2748 break; 2749 case IEEE80211_MESH_RTCMD_DELETE: 2750 ieee80211_mesh_rt_del(vap, ireq->i_data); 2751 break; 2752 default: 2753 return ENOSYS; 2754 } 2755 break; 2756 case IEEE80211_IOC_MESH_PR_METRIC: 2757 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2758 if (error == 0) { 2759 error = mesh_select_proto_metric(vap, tmpproto); 2760 if (error == 0) 2761 error = ENETRESET; 2762 } 2763 break; 2764 case IEEE80211_IOC_MESH_PR_PATH: 2765 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2766 if (error == 0) { 2767 error = mesh_select_proto_path(vap, tmpproto); 2768 if (error == 0) 2769 error = ENETRESET; 2770 } 2771 break; 2772 default: 2773 return ENOSYS; 2774 } 2775 return error; 2776} 2777IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2778