ieee80211_mesh.c revision 234875
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 234875 2012-05-01 15:39:16Z monthadar $"); 32#endif 33 34/* 35 * IEEE 802.11s Mesh Point (MBSS) support. 36 * 37 * Based on March 2009, D3.0 802.11s draft spec. 38 */ 39#include "opt_inet.h" 40#include "opt_wlan.h" 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/mbuf.h> 45#include <sys/malloc.h> 46#include <sys/kernel.h> 47 48#include <sys/socket.h> 49#include <sys/sockio.h> 50#include <sys/endian.h> 51#include <sys/errno.h> 52#include <sys/proc.h> 53#include <sys/sysctl.h> 54 55#include <net/if.h> 56#include <net/if_media.h> 57#include <net/if_llc.h> 58#include <net/ethernet.h> 59 60#include <net80211/ieee80211_var.h> 61#include <net80211/ieee80211_action.h> 62#include <net80211/ieee80211_input.h> 63#include <net80211/ieee80211_mesh.h> 64 65static void mesh_rt_flush_invalid(struct ieee80211vap *); 66static int mesh_select_proto_path(struct ieee80211vap *, const char *); 67static int mesh_select_proto_metric(struct ieee80211vap *, const char *); 68static void mesh_vattach(struct ieee80211vap *); 69static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); 70static void mesh_rt_cleanup_cb(void *); 71static void mesh_linkchange(struct ieee80211_node *, 72 enum ieee80211_mesh_mlstate); 73static void mesh_checkid(void *, struct ieee80211_node *); 74static uint32_t mesh_generateid(struct ieee80211vap *); 75static int mesh_checkpseq(struct ieee80211vap *, 76 const uint8_t [IEEE80211_ADDR_LEN], uint32_t); 77static struct ieee80211_node * 78 mesh_find_txnode(struct ieee80211vap *, 79 const uint8_t [IEEE80211_ADDR_LEN]); 80static void mesh_forward(struct ieee80211vap *, struct mbuf *, 81 const struct ieee80211_meshcntl *); 82static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int); 83static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 84 int, int); 85static void mesh_recv_ctl(struct ieee80211_node *, struct mbuf *, int); 86static void mesh_peer_timeout_setup(struct ieee80211_node *); 87static void mesh_peer_timeout_backoff(struct ieee80211_node *); 88static void mesh_peer_timeout_cb(void *); 89static __inline void 90 mesh_peer_timeout_stop(struct ieee80211_node *); 91static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 92static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 93static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 94 const uint8_t *); 95uint32_t mesh_airtime_calc(struct ieee80211_node *); 96 97/* 98 * Timeout values come from the specification and are in milliseconds. 99 */ 100static SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 101 "IEEE 802.11s parameters"); 102static int ieee80211_mesh_retrytimeout = -1; 103SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 104 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 105 "Retry timeout (msec)"); 106static int ieee80211_mesh_holdingtimeout = -1; 107SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 108 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 109 "Holding state timeout (msec)"); 110static int ieee80211_mesh_confirmtimeout = -1; 111SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 112 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 113 "Confirm state timeout (msec)"); 114static int ieee80211_mesh_maxretries = 2; 115SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 116 &ieee80211_mesh_maxretries, 0, 117 "Maximum retries during peer link establishment"); 118 119static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 120 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 121 122static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 123static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 124static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 125static ieee80211_recv_action_func mesh_recv_action_meshlmetric; 126 127static ieee80211_send_action_func mesh_send_action_meshpeering_open; 128static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 129static ieee80211_send_action_func mesh_send_action_meshpeering_close; 130static ieee80211_send_action_func mesh_send_action_meshlmetric; 131 132static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 133 .mpm_descr = "AIRTIME", 134 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 135 .mpm_metric = mesh_airtime_calc, 136}; 137 138static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 139static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 140 141#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) 142#define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 143#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 144 145MALLOC_DEFINE(M_80211_MESH_PREQ, "80211preq", "802.11 MESH Path Request frame"); 146MALLOC_DEFINE(M_80211_MESH_PREP, "80211prep", "802.11 MESH Path Reply frame"); 147MALLOC_DEFINE(M_80211_MESH_PERR, "80211perr", "802.11 MESH Path Error frame"); 148 149MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 150 151/* 152 * Helper functions to manipulate the Mesh routing table. 153 */ 154 155static struct ieee80211_mesh_route * 156mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 157 const uint8_t dest[IEEE80211_ADDR_LEN]) 158{ 159 struct ieee80211_mesh_route *rt; 160 161 MESH_RT_LOCK_ASSERT(ms); 162 163 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 164 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 165 return rt; 166 } 167 return NULL; 168} 169 170static struct ieee80211_mesh_route * 171mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 172 const uint8_t dest[IEEE80211_ADDR_LEN]) 173{ 174 struct ieee80211_mesh_route *rt; 175 176 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 177 ("%s: adding broadcast to the routing table", __func__)); 178 179 MESH_RT_LOCK_ASSERT(ms); 180 181 rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 182 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 183 if (rt != NULL) { 184 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 185 rt->rt_priv = (void *)ALIGN(&rt[1]); 186 rt->rt_crtime = ticks; 187 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 188 } 189 return rt; 190} 191 192struct ieee80211_mesh_route * 193ieee80211_mesh_rt_find(struct ieee80211vap *vap, 194 const uint8_t dest[IEEE80211_ADDR_LEN]) 195{ 196 struct ieee80211_mesh_state *ms = vap->iv_mesh; 197 struct ieee80211_mesh_route *rt; 198 199 MESH_RT_LOCK(ms); 200 rt = mesh_rt_find_locked(ms, dest); 201 MESH_RT_UNLOCK(ms); 202 return rt; 203} 204 205struct ieee80211_mesh_route * 206ieee80211_mesh_rt_add(struct ieee80211vap *vap, 207 const uint8_t dest[IEEE80211_ADDR_LEN]) 208{ 209 struct ieee80211_mesh_state *ms = vap->iv_mesh; 210 struct ieee80211_mesh_route *rt; 211 212 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 213 ("%s: duplicate entry in the routing table", __func__)); 214 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 215 ("%s: adding self to the routing table", __func__)); 216 217 MESH_RT_LOCK(ms); 218 rt = mesh_rt_add_locked(ms, dest); 219 MESH_RT_UNLOCK(ms); 220 return rt; 221} 222 223/* 224 * Add a proxy route (as needed) for the specified destination. 225 */ 226void 227ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 228 const uint8_t dest[IEEE80211_ADDR_LEN]) 229{ 230 struct ieee80211_mesh_state *ms = vap->iv_mesh; 231 struct ieee80211_mesh_route *rt; 232 233 MESH_RT_LOCK(ms); 234 rt = mesh_rt_find_locked(ms, dest); 235 if (rt == NULL) { 236 rt = mesh_rt_add_locked(ms, dest); 237 if (rt == NULL) { 238 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 239 "%s", "unable to add proxy entry"); 240 vap->iv_stats.is_mesh_rtaddfailed++; 241 } else { 242 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 243 "%s", "add proxy entry"); 244 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 245 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 246 | IEEE80211_MESHRT_FLAGS_PROXY; 247 } 248 /* XXX assert PROXY? */ 249 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 250 struct ieee80211com *ic = vap->iv_ic; 251 /* 252 * Fix existing entry created by received frames from 253 * stations that have some memory of dest. We also 254 * flush any frames held on the staging queue; delivering 255 * them is too much trouble right now. 256 */ 257 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 258 "%s", "fix proxy entry"); 259 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 260 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 261 | IEEE80211_MESHRT_FLAGS_PROXY; 262 /* XXX belongs in hwmp */ 263 ieee80211_ageq_drain_node(&ic->ic_stageq, 264 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 265 /* XXX stat? */ 266 } 267 MESH_RT_UNLOCK(ms); 268} 269 270static __inline void 271mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 272{ 273 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 274 free(rt, M_80211_MESH_RT); 275} 276 277void 278ieee80211_mesh_rt_del(struct ieee80211vap *vap, 279 const uint8_t dest[IEEE80211_ADDR_LEN]) 280{ 281 struct ieee80211_mesh_state *ms = vap->iv_mesh; 282 struct ieee80211_mesh_route *rt, *next; 283 284 MESH_RT_LOCK(ms); 285 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 286 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 287 mesh_rt_del(ms, rt); 288 MESH_RT_UNLOCK(ms); 289 return; 290 } 291 } 292 MESH_RT_UNLOCK(ms); 293} 294 295void 296ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 297{ 298 struct ieee80211_mesh_state *ms = vap->iv_mesh; 299 struct ieee80211_mesh_route *rt, *next; 300 301 if (ms == NULL) 302 return; 303 MESH_RT_LOCK(ms); 304 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 305 mesh_rt_del(ms, rt); 306 MESH_RT_UNLOCK(ms); 307} 308 309void 310ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 311 const uint8_t peer[IEEE80211_ADDR_LEN]) 312{ 313 struct ieee80211_mesh_state *ms = vap->iv_mesh; 314 struct ieee80211_mesh_route *rt, *next; 315 316 MESH_RT_LOCK(ms); 317 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 318 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 319 mesh_rt_del(ms, rt); 320 } 321 MESH_RT_UNLOCK(ms); 322} 323 324/* 325 * Flush expired routing entries, i.e. those in invalid state for 326 * some time. 327 */ 328static void 329mesh_rt_flush_invalid(struct ieee80211vap *vap) 330{ 331 struct ieee80211_mesh_state *ms = vap->iv_mesh; 332 struct ieee80211_mesh_route *rt, *next; 333 334 if (ms == NULL) 335 return; 336 MESH_RT_LOCK(ms); 337 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 338 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 339 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 340 mesh_rt_del(ms, rt); 341 } 342 MESH_RT_UNLOCK(ms); 343} 344 345#define N(a) (sizeof(a) / sizeof(a[0])) 346int 347ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 348{ 349 int i, firstempty = -1; 350 351 for (i = 0; i < N(mesh_proto_paths); i++) { 352 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 353 IEEE80211_MESH_PROTO_DSZ) == 0) 354 return EEXIST; 355 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 356 firstempty = i; 357 } 358 if (firstempty < 0) 359 return ENOSPC; 360 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 361 mesh_proto_paths[firstempty].mpp_active = 1; 362 return 0; 363} 364 365int 366ieee80211_mesh_register_proto_metric(const struct 367 ieee80211_mesh_proto_metric *mpm) 368{ 369 int i, firstempty = -1; 370 371 for (i = 0; i < N(mesh_proto_metrics); i++) { 372 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 373 IEEE80211_MESH_PROTO_DSZ) == 0) 374 return EEXIST; 375 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 376 firstempty = i; 377 } 378 if (firstempty < 0) 379 return ENOSPC; 380 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 381 mesh_proto_metrics[firstempty].mpm_active = 1; 382 return 0; 383} 384 385static int 386mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 387{ 388 struct ieee80211_mesh_state *ms = vap->iv_mesh; 389 int i; 390 391 for (i = 0; i < N(mesh_proto_paths); i++) { 392 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 393 ms->ms_ppath = &mesh_proto_paths[i]; 394 return 0; 395 } 396 } 397 return ENOENT; 398} 399 400static int 401mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 402{ 403 struct ieee80211_mesh_state *ms = vap->iv_mesh; 404 int i; 405 406 for (i = 0; i < N(mesh_proto_metrics); i++) { 407 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 408 ms->ms_pmetric = &mesh_proto_metrics[i]; 409 return 0; 410 } 411 } 412 return ENOENT; 413} 414#undef N 415 416static void 417ieee80211_mesh_init(void) 418{ 419 420 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 421 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 422 423 /* 424 * Setup mesh parameters that depends on the clock frequency. 425 */ 426 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 427 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 428 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 429 430 /* 431 * Register action frame handlers. 432 */ 433 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 434 IEEE80211_ACTION_MESHPEERING_OPEN, 435 mesh_recv_action_meshpeering_open); 436 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 437 IEEE80211_ACTION_MESHPEERING_CONFIRM, 438 mesh_recv_action_meshpeering_confirm); 439 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 440 IEEE80211_ACTION_MESHPEERING_CLOSE, 441 mesh_recv_action_meshpeering_close); 442 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESH, 443 IEEE80211_ACTION_MESH_LMETRIC, mesh_recv_action_meshlmetric); 444 445 ieee80211_send_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 446 IEEE80211_ACTION_MESHPEERING_OPEN, 447 mesh_send_action_meshpeering_open); 448 ieee80211_send_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 449 IEEE80211_ACTION_MESHPEERING_CONFIRM, 450 mesh_send_action_meshpeering_confirm); 451 ieee80211_send_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 452 IEEE80211_ACTION_MESHPEERING_CLOSE, 453 mesh_send_action_meshpeering_close); 454 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESH, 455 IEEE80211_ACTION_MESH_LMETRIC, 456 mesh_send_action_meshlmetric); 457 458 /* 459 * Register Airtime Link Metric. 460 */ 461 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 462 463} 464SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 465 466void 467ieee80211_mesh_attach(struct ieee80211com *ic) 468{ 469 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 470} 471 472void 473ieee80211_mesh_detach(struct ieee80211com *ic) 474{ 475} 476 477static void 478mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 479{ 480 struct ieee80211com *ic = ni->ni_ic; 481 uint16_t args[3]; 482 483 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 484 args[0] = ni->ni_mlpid; 485 args[1] = ni->ni_mllid; 486 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 487 ieee80211_send_action(ni, 488 IEEE80211_ACTION_CAT_SELF_PROT, 489 IEEE80211_ACTION_MESHPEERING_CLOSE, 490 args); 491 } 492 callout_drain(&ni->ni_mltimer); 493 /* XXX belongs in hwmp */ 494 ieee80211_ageq_drain_node(&ic->ic_stageq, 495 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 496} 497 498static void 499mesh_vdetach(struct ieee80211vap *vap) 500{ 501 struct ieee80211_mesh_state *ms = vap->iv_mesh; 502 503 callout_drain(&ms->ms_cleantimer); 504 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 505 NULL); 506 ieee80211_mesh_rt_flush(vap); 507 mtx_destroy(&ms->ms_rt_lock); 508 ms->ms_ppath->mpp_vdetach(vap); 509 free(vap->iv_mesh, M_80211_VAP); 510 vap->iv_mesh = NULL; 511} 512 513static void 514mesh_vattach(struct ieee80211vap *vap) 515{ 516 struct ieee80211_mesh_state *ms; 517 vap->iv_newstate = mesh_newstate; 518 vap->iv_input = mesh_input; 519 vap->iv_opdetach = mesh_vdetach; 520 vap->iv_recv_mgmt = mesh_recv_mgmt; 521 vap->iv_recv_ctl = mesh_recv_ctl; 522 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 523 M_NOWAIT | M_ZERO); 524 if (ms == NULL) { 525 printf("%s: couldn't alloc MBSS state\n", __func__); 526 return; 527 } 528 vap->iv_mesh = ms; 529 ms->ms_seq = 0; 530 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 531 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 532 TAILQ_INIT(&ms->ms_routes); 533 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 534 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 535 mesh_select_proto_metric(vap, "AIRTIME"); 536 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 537 mesh_select_proto_path(vap, "HWMP"); 538 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 539 ms->ms_ppath->mpp_vattach(vap); 540} 541 542/* 543 * IEEE80211_M_MBSS vap state machine handler. 544 */ 545static int 546mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 547{ 548 struct ieee80211_mesh_state *ms = vap->iv_mesh; 549 struct ieee80211com *ic = vap->iv_ic; 550 struct ieee80211_node *ni; 551 enum ieee80211_state ostate; 552 553 IEEE80211_LOCK_ASSERT(ic); 554 555 ostate = vap->iv_state; 556 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 557 __func__, ieee80211_state_name[ostate], 558 ieee80211_state_name[nstate], arg); 559 vap->iv_state = nstate; /* state transition */ 560 if (ostate != IEEE80211_S_SCAN) 561 ieee80211_cancel_scan(vap); /* background scan */ 562 ni = vap->iv_bss; /* NB: no reference held */ 563 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 564 callout_drain(&ms->ms_cleantimer); 565 switch (nstate) { 566 case IEEE80211_S_INIT: 567 switch (ostate) { 568 case IEEE80211_S_SCAN: 569 ieee80211_cancel_scan(vap); 570 break; 571 case IEEE80211_S_CAC: 572 ieee80211_dfs_cac_stop(vap); 573 break; 574 case IEEE80211_S_RUN: 575 ieee80211_iterate_nodes(&ic->ic_sta, 576 mesh_vdetach_peers, NULL); 577 break; 578 default: 579 break; 580 } 581 if (ostate != IEEE80211_S_INIT) { 582 /* NB: optimize INIT -> INIT case */ 583 ieee80211_reset_bss(vap); 584 ieee80211_mesh_rt_flush(vap); 585 } 586 break; 587 case IEEE80211_S_SCAN: 588 switch (ostate) { 589 case IEEE80211_S_INIT: 590 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 591 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 592 ms->ms_idlen != 0) { 593 /* 594 * Already have a channel and a mesh ID; bypass 595 * the scan and startup immediately. 596 */ 597 ieee80211_create_ibss(vap, vap->iv_des_chan); 598 break; 599 } 600 /* 601 * Initiate a scan. We can come here as a result 602 * of an IEEE80211_IOC_SCAN_REQ too in which case 603 * the vap will be marked with IEEE80211_FEXT_SCANREQ 604 * and the scan request parameters will be present 605 * in iv_scanreq. Otherwise we do the default. 606 */ 607 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 608 ieee80211_check_scan(vap, 609 vap->iv_scanreq_flags, 610 vap->iv_scanreq_duration, 611 vap->iv_scanreq_mindwell, 612 vap->iv_scanreq_maxdwell, 613 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 614 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 615 } else 616 ieee80211_check_scan_current(vap); 617 break; 618 default: 619 break; 620 } 621 break; 622 case IEEE80211_S_CAC: 623 /* 624 * Start CAC on a DFS channel. We come here when starting 625 * a bss on a DFS channel (see ieee80211_create_ibss). 626 */ 627 ieee80211_dfs_cac_start(vap); 628 break; 629 case IEEE80211_S_RUN: 630 switch (ostate) { 631 case IEEE80211_S_INIT: 632 /* 633 * Already have a channel; bypass the 634 * scan and startup immediately. 635 * Note that ieee80211_create_ibss will call 636 * back to do a RUN->RUN state change. 637 */ 638 ieee80211_create_ibss(vap, 639 ieee80211_ht_adjust_channel(ic, 640 ic->ic_curchan, vap->iv_flags_ht)); 641 /* NB: iv_bss is changed on return */ 642 break; 643 case IEEE80211_S_CAC: 644 /* 645 * NB: This is the normal state change when CAC 646 * expires and no radar was detected; no need to 647 * clear the CAC timer as it's already expired. 648 */ 649 /* fall thru... */ 650 case IEEE80211_S_CSA: 651#if 0 652 /* 653 * Shorten inactivity timer of associated stations 654 * to weed out sta's that don't follow a CSA. 655 */ 656 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 657#endif 658 /* 659 * Update bss node channel to reflect where 660 * we landed after CSA. 661 */ 662 ieee80211_node_set_chan(vap->iv_bss, 663 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 664 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 665 /* XXX bypass debug msgs */ 666 break; 667 case IEEE80211_S_SCAN: 668 case IEEE80211_S_RUN: 669#ifdef IEEE80211_DEBUG 670 if (ieee80211_msg_debug(vap)) { 671 struct ieee80211_node *ni = vap->iv_bss; 672 ieee80211_note(vap, 673 "synchronized with %s meshid ", 674 ether_sprintf(ni->ni_meshid)); 675 ieee80211_print_essid(ni->ni_meshid, 676 ni->ni_meshidlen); 677 /* XXX MCS/HT */ 678 printf(" channel %d\n", 679 ieee80211_chan2ieee(ic, ic->ic_curchan)); 680 } 681#endif 682 break; 683 default: 684 break; 685 } 686 ieee80211_node_authorize(vap->iv_bss); 687 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 688 mesh_rt_cleanup_cb, vap); 689 break; 690 default: 691 break; 692 } 693 /* NB: ostate not nstate */ 694 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 695 return 0; 696} 697 698static void 699mesh_rt_cleanup_cb(void *arg) 700{ 701 struct ieee80211vap *vap = arg; 702 struct ieee80211_mesh_state *ms = vap->iv_mesh; 703 704 mesh_rt_flush_invalid(vap); 705 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 706 mesh_rt_cleanup_cb, vap); 707} 708 709 710/* 711 * Helper function to note the Mesh Peer Link FSM change. 712 */ 713static void 714mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 715{ 716 struct ieee80211vap *vap = ni->ni_vap; 717 struct ieee80211_mesh_state *ms = vap->iv_mesh; 718#ifdef IEEE80211_DEBUG 719 static const char *meshlinkstates[] = { 720 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 721 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 722 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 723 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 724 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 725 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 726 }; 727#endif 728 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 729 ni, "peer link: %s -> %s", 730 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 731 732 /* track neighbor count */ 733 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 734 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 735 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 736 ms->ms_neighbors++; 737 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 738 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 739 state != IEEE80211_NODE_MESH_ESTABLISHED) { 740 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 741 ms->ms_neighbors--; 742 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 743 } 744 ni->ni_mlstate = state; 745 switch (state) { 746 case IEEE80211_NODE_MESH_HOLDING: 747 ms->ms_ppath->mpp_peerdown(ni); 748 break; 749 case IEEE80211_NODE_MESH_ESTABLISHED: 750 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 751 break; 752 default: 753 break; 754 } 755} 756 757/* 758 * Helper function to generate a unique local ID required for mesh 759 * peer establishment. 760 */ 761static void 762mesh_checkid(void *arg, struct ieee80211_node *ni) 763{ 764 uint16_t *r = arg; 765 766 if (*r == ni->ni_mllid) 767 *(uint16_t *)arg = 0; 768} 769 770static uint32_t 771mesh_generateid(struct ieee80211vap *vap) 772{ 773 int maxiter = 4; 774 uint16_t r; 775 776 do { 777 get_random_bytes(&r, 2); 778 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 779 maxiter--; 780 } while (r == 0 && maxiter > 0); 781 return r; 782} 783 784/* 785 * Verifies if we already received this packet by checking its 786 * sequence number. 787 * Returns 0 if the frame is to be accepted, 1 otherwise. 788 */ 789static int 790mesh_checkpseq(struct ieee80211vap *vap, 791 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 792{ 793 struct ieee80211_mesh_route *rt; 794 795 rt = ieee80211_mesh_rt_find(vap, source); 796 if (rt == NULL) { 797 rt = ieee80211_mesh_rt_add(vap, source); 798 if (rt == NULL) { 799 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 800 "%s", "add mcast route failed"); 801 vap->iv_stats.is_mesh_rtaddfailed++; 802 return 1; 803 } 804 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 805 "add mcast route, mesh seqno %d", seq); 806 rt->rt_lastmseq = seq; 807 return 0; 808 } 809 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 810 return 1; 811 } else { 812 rt->rt_lastmseq = seq; 813 return 0; 814 } 815} 816 817/* 818 * Iterate the routing table and locate the next hop. 819 */ 820static struct ieee80211_node * 821mesh_find_txnode(struct ieee80211vap *vap, 822 const uint8_t dest[IEEE80211_ADDR_LEN]) 823{ 824 struct ieee80211_mesh_route *rt; 825 826 rt = ieee80211_mesh_rt_find(vap, dest); 827 if (rt == NULL) 828 return NULL; 829 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 830 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 831 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 832 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 833 /* XXX stat */ 834 return NULL; 835 } 836 return ieee80211_find_txnode(vap, rt->rt_nexthop); 837} 838 839/* 840 * Forward the specified frame. 841 * Decrement the TTL and set TA to our MAC address. 842 */ 843static void 844mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 845 const struct ieee80211_meshcntl *mc) 846{ 847 struct ieee80211com *ic = vap->iv_ic; 848 struct ieee80211_mesh_state *ms = vap->iv_mesh; 849 struct ifnet *ifp = vap->iv_ifp; 850 struct ifnet *parent = ic->ic_ifp; 851 const struct ieee80211_frame *wh = 852 mtod(m, const struct ieee80211_frame *); 853 struct mbuf *mcopy; 854 struct ieee80211_meshcntl *mccopy; 855 struct ieee80211_frame *whcopy; 856 struct ieee80211_node *ni; 857 int err; 858 859 if (mc->mc_ttl == 0) { 860 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 861 "%s", "frame not fwd'd, ttl 0"); 862 vap->iv_stats.is_mesh_fwd_ttl++; 863 return; 864 } 865 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 866 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 867 "%s", "frame not fwd'd, fwding disabled"); 868 vap->iv_stats.is_mesh_fwd_disabled++; 869 return; 870 } 871 mcopy = m_dup(m, M_DONTWAIT); 872 if (mcopy == NULL) { 873 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 874 "%s", "frame not fwd'd, cannot dup"); 875 vap->iv_stats.is_mesh_fwd_nobuf++; 876 ifp->if_oerrors++; 877 return; 878 } 879 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 880 sizeof(struct ieee80211_meshcntl)); 881 if (mcopy == NULL) { 882 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 883 "%s", "frame not fwd'd, too short"); 884 vap->iv_stats.is_mesh_fwd_tooshort++; 885 ifp->if_oerrors++; 886 m_freem(mcopy); 887 return; 888 } 889 whcopy = mtod(mcopy, struct ieee80211_frame *); 890 mccopy = (struct ieee80211_meshcntl *) 891 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 892 /* XXX clear other bits? */ 893 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 894 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 895 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 896 ni = ieee80211_ref_node(vap->iv_bss); 897 mcopy->m_flags |= M_MCAST; 898 } else { 899 ni = mesh_find_txnode(vap, whcopy->i_addr3); 900 if (ni == NULL) { 901 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 902 "%s", "frame not fwd'd, no path"); 903 vap->iv_stats.is_mesh_fwd_nopath++; 904 m_freem(mcopy); 905 return; 906 } 907 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 908 } 909 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 910 mccopy->mc_ttl--; 911 912 /* XXX calculate priority so drivers can find the tx queue */ 913 M_WME_SETAC(mcopy, WME_AC_BE); 914 915 /* XXX do we know m_nextpkt is NULL? */ 916 mcopy->m_pkthdr.rcvif = (void *) ni; 917 err = parent->if_transmit(parent, mcopy); 918 if (err != 0) { 919 /* NB: IFQ_HANDOFF reclaims mbuf */ 920 ieee80211_free_node(ni); 921 } else { 922 ifp->if_opackets++; 923 } 924} 925 926static struct mbuf * 927mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 928{ 929#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 930 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 931 sizeof(struct ieee80211_meshcntl_ae11)]; 932 const struct ieee80211_qosframe_addr4 *wh; 933 const struct ieee80211_meshcntl_ae10 *mc; 934 struct ether_header *eh; 935 struct llc *llc; 936 int ae; 937 938 if (m->m_len < hdrlen + sizeof(*llc) && 939 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 940 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 941 "discard data frame: %s", "m_pullup failed"); 942 vap->iv_stats.is_rx_tooshort++; 943 return NULL; 944 } 945 memcpy(b, mtod(m, caddr_t), hdrlen); 946 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 947 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 948 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 949 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 950 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 951 952 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 953 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 954 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 955 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 956 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 957 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 958 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 959 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 960 llc = NULL; 961 } else { 962 m_adj(m, hdrlen - sizeof(*eh)); 963 } 964 eh = mtod(m, struct ether_header *); 965 ae = mc->mc_flags & 3; 966 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 967 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 968 if (ae == 0) { 969 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 970 } else if (ae == 1) { 971 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 972 } else { 973 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 974 (const struct ieee80211_frame *)wh, NULL, 975 "bad AE %d", ae); 976 vap->iv_stats.is_mesh_badae++; 977 m_freem(m); 978 return NULL; 979 } 980 } else { 981 if (ae == 0) { 982 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 983 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 984 } else if (ae == 2) { 985 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 986 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 987 } else { 988 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 989 (const struct ieee80211_frame *)wh, NULL, 990 "bad AE %d", ae); 991 vap->iv_stats.is_mesh_badae++; 992 m_freem(m); 993 return NULL; 994 } 995 } 996#ifdef ALIGNED_POINTER 997 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 998 m = ieee80211_realign(vap, m, sizeof(*eh)); 999 if (m == NULL) 1000 return NULL; 1001 } 1002#endif /* ALIGNED_POINTER */ 1003 if (llc != NULL) { 1004 eh = mtod(m, struct ether_header *); 1005 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 1006 } 1007 return m; 1008#undef WDIR 1009} 1010 1011/* 1012 * Return non-zero if the unicast mesh data frame should be processed 1013 * locally. Frames that are not proxy'd have our address, otherwise 1014 * we need to consult the routing table to look for a proxy entry. 1015 */ 1016static __inline int 1017mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 1018 const struct ieee80211_meshcntl *mc) 1019{ 1020 int ae = mc->mc_flags & 3; 1021 1022 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1023 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1024 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1025 if (ae == 2) { /* ucast w/ proxy */ 1026 const struct ieee80211_meshcntl_ae10 *mc10 = 1027 (const struct ieee80211_meshcntl_ae10 *) mc; 1028 struct ieee80211_mesh_route *rt = 1029 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1030 /* check for proxy route to ourself */ 1031 return (rt != NULL && 1032 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1033 } else /* ucast w/o proxy */ 1034 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1035} 1036 1037static int 1038mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1039{ 1040#define HAS_SEQ(type) ((type & 0x4) == 0) 1041 struct ieee80211vap *vap = ni->ni_vap; 1042 struct ieee80211com *ic = ni->ni_ic; 1043 struct ifnet *ifp = vap->iv_ifp; 1044 struct ieee80211_frame *wh; 1045 const struct ieee80211_meshcntl *mc; 1046 int hdrspace, meshdrlen, need_tap; 1047 uint8_t dir, type, subtype; 1048 uint32_t seq; 1049 uint8_t *addr, qos[2]; 1050 ieee80211_seq rxseq; 1051 1052 KASSERT(ni != NULL, ("null node")); 1053 ni->ni_inact = ni->ni_inact_reload; 1054 1055 need_tap = 1; /* mbuf need to be tapped. */ 1056 type = -1; /* undefined */ 1057 1058 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1059 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1060 ni->ni_macaddr, NULL, 1061 "too short (1): len %u", m->m_pkthdr.len); 1062 vap->iv_stats.is_rx_tooshort++; 1063 goto out; 1064 } 1065 /* 1066 * Bit of a cheat here, we use a pointer for a 3-address 1067 * frame format but don't reference fields past outside 1068 * ieee80211_frame_min w/o first validating the data is 1069 * present. 1070 */ 1071 wh = mtod(m, struct ieee80211_frame *); 1072 1073 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1074 IEEE80211_FC0_VERSION_0) { 1075 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1076 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1077 vap->iv_stats.is_rx_badversion++; 1078 goto err; 1079 } 1080 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1081 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1082 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1083 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1084 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1085 ni->ni_noise = nf; 1086 if (HAS_SEQ(type)) { 1087 uint8_t tid = ieee80211_gettid(wh); 1088 1089 if (IEEE80211_QOS_HAS_SEQ(wh) && 1090 TID_TO_WME_AC(tid) >= WME_AC_VI) 1091 ic->ic_wme.wme_hipri_traffic++; 1092 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1093 if (! ieee80211_check_rxseq(ni, wh)) { 1094 /* duplicate, discard */ 1095 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1096 wh->i_addr1, "duplicate", 1097 "seqno <%u,%u> fragno <%u,%u> tid %u", 1098 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1099 ni->ni_rxseqs[tid] >> 1100 IEEE80211_SEQ_SEQ_SHIFT, 1101 rxseq & IEEE80211_SEQ_FRAG_MASK, 1102 ni->ni_rxseqs[tid] & 1103 IEEE80211_SEQ_FRAG_MASK, 1104 tid); 1105 vap->iv_stats.is_rx_dup++; 1106 IEEE80211_NODE_STAT(ni, rx_dup); 1107 goto out; 1108 } 1109 ni->ni_rxseqs[tid] = rxseq; 1110 } 1111 } 1112#ifdef IEEE80211_DEBUG 1113 /* 1114 * It's easier, but too expensive, to simulate different mesh 1115 * topologies by consulting the ACL policy very early, so do this 1116 * only under DEBUG. 1117 * 1118 * NB: this check is also done upon peering link initiation. 1119 */ 1120 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { 1121 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1122 wh, NULL, "%s", "disallowed by ACL"); 1123 vap->iv_stats.is_rx_acl++; 1124 goto out; 1125 } 1126#endif 1127 switch (type) { 1128 case IEEE80211_FC0_TYPE_DATA: 1129 if (ni == vap->iv_bss) 1130 goto out; 1131 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1132 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1133 ni->ni_macaddr, NULL, 1134 "peer link not yet established (%d)", 1135 ni->ni_mlstate); 1136 vap->iv_stats.is_mesh_nolink++; 1137 goto out; 1138 } 1139 if (dir != IEEE80211_FC1_DIR_FROMDS && 1140 dir != IEEE80211_FC1_DIR_DSTODS) { 1141 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1142 wh, "data", "incorrect dir 0x%x", dir); 1143 vap->iv_stats.is_rx_wrongdir++; 1144 goto err; 1145 } 1146 1147 /* All Mesh data frames are QoS subtype */ 1148 if (!HAS_SEQ(type)) { 1149 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1150 wh, "data", "incorrect subtype 0x%x", subtype); 1151 vap->iv_stats.is_rx_badsubtype++; 1152 goto err; 1153 } 1154 1155 /* 1156 * Next up, any fragmentation. 1157 * XXX: we defrag before we even try to forward, 1158 * Mesh Control field is not present in sub-sequent 1159 * fragmented frames. This is in contrast to Draft 4.0. 1160 */ 1161 hdrspace = ieee80211_hdrspace(ic, wh); 1162 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1163 m = ieee80211_defrag(ni, m, hdrspace); 1164 if (m == NULL) { 1165 /* Fragment dropped or frame not complete yet */ 1166 goto out; 1167 } 1168 } 1169 wh = mtod(m, struct ieee80211_frame *); /* NB: after defrag */ 1170 1171 /* 1172 * Now we have a complete Mesh Data frame. 1173 */ 1174 1175 /* 1176 * Only fromDStoDS data frames use 4 address qos frames 1177 * as specified in amendment. Otherwise addr4 is located 1178 * in the Mesh Control field and a 3 address qos frame 1179 * is used. 1180 */ 1181 if (IEEE80211_IS_DSTODS(wh)) 1182 *(uint16_t *)qos = *(uint16_t *) 1183 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos; 1184 else 1185 *(uint16_t *)qos = *(uint16_t *) 1186 ((struct ieee80211_qosframe *)wh)->i_qos; 1187 1188 /* 1189 * NB: The mesh STA sets the Mesh Control Present 1190 * subfield to 1 in the Mesh Data frame containing 1191 * an unfragmented MSDU, an A-MSDU, or the first 1192 * fragment of an MSDU. 1193 * After defrag it should always be present. 1194 */ 1195 if (!(qos[1] & IEEE80211_QOS_MC)) { 1196 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1197 ni->ni_macaddr, NULL, 1198 "%s", "Mesh control field not present"); 1199 vap->iv_stats.is_rx_elem_missing++; /* XXX: kinda */ 1200 goto err; 1201 } 1202 1203 /* pull up enough to get to the mesh control */ 1204 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1205 (m = m_pullup(m, hdrspace + 1206 sizeof(struct ieee80211_meshcntl))) == NULL) { 1207 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1208 ni->ni_macaddr, NULL, 1209 "data too short: expecting %u", hdrspace); 1210 vap->iv_stats.is_rx_tooshort++; 1211 goto out; /* XXX */ 1212 } 1213 /* 1214 * Now calculate the full extent of the headers. Note 1215 * mesh_decap will pull up anything we didn't get 1216 * above when it strips the 802.11 headers. 1217 */ 1218 mc = (const struct ieee80211_meshcntl *) 1219 (mtod(m, const uint8_t *) + hdrspace); 1220 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1221 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1222 hdrspace += meshdrlen; 1223 seq = LE_READ_4(mc->mc_seq); 1224 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1225 addr = wh->i_addr3; 1226 else 1227 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1228 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1229 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1230 addr, "data", "%s", "not to me"); 1231 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1232 goto out; 1233 } 1234 if (mesh_checkpseq(vap, addr, seq) != 0) { 1235 vap->iv_stats.is_rx_dup++; 1236 goto out; 1237 } 1238 1239 /* 1240 * Potentially forward packet. See table s36 (p140) 1241 * for the rules. XXX tap fwd'd packets not for us? 1242 */ 1243 if (dir == IEEE80211_FC1_DIR_FROMDS || 1244 !mesh_isucastforme(vap, wh, mc)) { 1245 mesh_forward(vap, m, mc); 1246 if (dir == IEEE80211_FC1_DIR_DSTODS) 1247 goto out; 1248 /* NB: fall thru to deliver mcast frames locally */ 1249 } 1250 1251 if (ieee80211_radiotap_active_vap(vap)) 1252 ieee80211_radiotap_rx(vap, m); 1253 need_tap = 0; 1254 1255 /* 1256 * Finally, strip the 802.11 header. 1257 */ 1258 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1259 if (m == NULL) { 1260 /* XXX mask bit to check for both */ 1261 /* don't count Null data frames as errors */ 1262 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1263 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1264 goto out; 1265 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1266 ni->ni_macaddr, "data", "%s", "decap error"); 1267 vap->iv_stats.is_rx_decap++; 1268 IEEE80211_NODE_STAT(ni, rx_decap); 1269 goto err; 1270 } 1271 if (qos[0] & IEEE80211_QOS_AMSDU) { 1272 m = ieee80211_decap_amsdu(ni, m); 1273 if (m == NULL) 1274 return IEEE80211_FC0_TYPE_DATA; 1275 } 1276 ieee80211_deliver_data(vap, ni, m); 1277 return type; 1278 case IEEE80211_FC0_TYPE_MGT: 1279 vap->iv_stats.is_rx_mgmt++; 1280 IEEE80211_NODE_STAT(ni, rx_mgmt); 1281 if (dir != IEEE80211_FC1_DIR_NODS) { 1282 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1283 wh, "mgt", "incorrect dir 0x%x", dir); 1284 vap->iv_stats.is_rx_wrongdir++; 1285 goto err; 1286 } 1287 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1288 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1289 ni->ni_macaddr, "mgt", "too short: len %u", 1290 m->m_pkthdr.len); 1291 vap->iv_stats.is_rx_tooshort++; 1292 goto out; 1293 } 1294#ifdef IEEE80211_DEBUG 1295 if ((ieee80211_msg_debug(vap) && 1296 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1297 ieee80211_msg_dumppkts(vap)) { 1298 if_printf(ifp, "received %s from %s rssi %d\n", 1299 ieee80211_mgt_subtype_name[subtype >> 1300 IEEE80211_FC0_SUBTYPE_SHIFT], 1301 ether_sprintf(wh->i_addr2), rssi); 1302 } 1303#endif 1304 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1305 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1306 wh, NULL, "%s", "WEP set but not permitted"); 1307 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1308 goto out; 1309 } 1310 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1311 goto out; 1312 case IEEE80211_FC0_TYPE_CTL: 1313 vap->iv_stats.is_rx_ctl++; 1314 IEEE80211_NODE_STAT(ni, rx_ctrl); 1315 goto out; 1316 default: 1317 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1318 wh, "bad", "frame type 0x%x", type); 1319 /* should not come here */ 1320 break; 1321 } 1322err: 1323 ifp->if_ierrors++; 1324out: 1325 if (m != NULL) { 1326 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1327 ieee80211_radiotap_rx(vap, m); 1328 m_freem(m); 1329 } 1330 return type; 1331} 1332 1333static void 1334mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1335 int rssi, int nf) 1336{ 1337 struct ieee80211vap *vap = ni->ni_vap; 1338 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1339 struct ieee80211com *ic = ni->ni_ic; 1340 struct ieee80211_frame *wh; 1341 uint8_t *frm, *efrm; 1342 1343 wh = mtod(m0, struct ieee80211_frame *); 1344 frm = (uint8_t *)&wh[1]; 1345 efrm = mtod(m0, uint8_t *) + m0->m_len; 1346 switch (subtype) { 1347 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1348 case IEEE80211_FC0_SUBTYPE_BEACON: 1349 { 1350 struct ieee80211_scanparams scan; 1351 /* 1352 * We process beacon/probe response 1353 * frames to discover neighbors. 1354 */ 1355 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1356 return; 1357 /* 1358 * Count frame now that we know it's to be processed. 1359 */ 1360 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1361 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1362 IEEE80211_NODE_STAT(ni, rx_beacons); 1363 } else 1364 IEEE80211_NODE_STAT(ni, rx_proberesp); 1365 /* 1366 * If scanning, just pass information to the scan module. 1367 */ 1368 if (ic->ic_flags & IEEE80211_F_SCAN) { 1369 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1370 /* 1371 * Actively scanning a channel marked passive; 1372 * send a probe request now that we know there 1373 * is 802.11 traffic present. 1374 * 1375 * XXX check if the beacon we recv'd gives 1376 * us what we need and suppress the probe req 1377 */ 1378 ieee80211_probe_curchan(vap, 1); 1379 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1380 } 1381 ieee80211_add_scan(vap, &scan, wh, 1382 subtype, rssi, nf); 1383 return; 1384 } 1385 1386 /* The rest of this code assumes we are running */ 1387 if (vap->iv_state != IEEE80211_S_RUN) 1388 return; 1389 /* 1390 * Ignore non-mesh STAs. 1391 */ 1392 if ((scan.capinfo & 1393 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1394 scan.meshid == NULL || scan.meshconf == NULL) { 1395 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1396 wh, "beacon", "%s", "not a mesh sta"); 1397 vap->iv_stats.is_mesh_wrongmesh++; 1398 return; 1399 } 1400 /* 1401 * Ignore STAs for other mesh networks. 1402 */ 1403 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1404 mesh_verify_meshconf(vap, scan.meshconf)) { 1405 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1406 wh, "beacon", "%s", "not for our mesh"); 1407 vap->iv_stats.is_mesh_wrongmesh++; 1408 return; 1409 } 1410 /* 1411 * Peer only based on the current ACL policy. 1412 */ 1413 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { 1414 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1415 wh, NULL, "%s", "disallowed by ACL"); 1416 vap->iv_stats.is_rx_acl++; 1417 return; 1418 } 1419 /* 1420 * Do neighbor discovery. 1421 */ 1422 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1423 /* 1424 * Create a new entry in the neighbor table. 1425 */ 1426 ni = ieee80211_add_neighbor(vap, wh, &scan); 1427 } 1428 /* 1429 * Automatically peer with discovered nodes if possible. 1430 * XXX backoff on repeated failure 1431 */ 1432 if (ni != vap->iv_bss && 1433 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1434 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1435 uint16_t args[1]; 1436 1437 ni->ni_mlpid = mesh_generateid(vap); 1438 if (ni->ni_mlpid == 0) 1439 return; 1440 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1441 args[0] = ni->ni_mlpid; 1442 ieee80211_send_action(ni, 1443 IEEE80211_ACTION_CAT_SELF_PROT, 1444 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1445 ni->ni_mlrcnt = 0; 1446 mesh_peer_timeout_setup(ni); 1447 } 1448 break; 1449 } 1450 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1451 { 1452 uint8_t *ssid, *meshid, *rates, *xrates; 1453 uint8_t *sfrm; 1454 1455 if (vap->iv_state != IEEE80211_S_RUN) { 1456 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1457 wh, NULL, "wrong state %s", 1458 ieee80211_state_name[vap->iv_state]); 1459 vap->iv_stats.is_rx_mgtdiscard++; 1460 return; 1461 } 1462 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1463 /* frame must be directed */ 1464 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1465 wh, NULL, "%s", "not unicast"); 1466 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1467 return; 1468 } 1469 /* 1470 * prreq frame format 1471 * [tlv] ssid 1472 * [tlv] supported rates 1473 * [tlv] extended supported rates 1474 * [tlv] mesh id 1475 */ 1476 ssid = meshid = rates = xrates = NULL; 1477 sfrm = frm; 1478 while (efrm - frm > 1) { 1479 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1480 switch (*frm) { 1481 case IEEE80211_ELEMID_SSID: 1482 ssid = frm; 1483 break; 1484 case IEEE80211_ELEMID_RATES: 1485 rates = frm; 1486 break; 1487 case IEEE80211_ELEMID_XRATES: 1488 xrates = frm; 1489 break; 1490 case IEEE80211_ELEMID_MESHID: 1491 meshid = frm; 1492 break; 1493 } 1494 frm += frm[1] + 2; 1495 } 1496 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1497 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1498 if (xrates != NULL) 1499 IEEE80211_VERIFY_ELEMENT(xrates, 1500 IEEE80211_RATE_MAXSIZE - rates[1], return); 1501 if (meshid != NULL) { 1502 IEEE80211_VERIFY_ELEMENT(meshid, 1503 IEEE80211_MESHID_LEN, return); 1504 /* NB: meshid, not ssid */ 1505 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1506 } 1507 1508 /* XXX find a better class or define it's own */ 1509 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1510 "%s", "recv probe req"); 1511 /* 1512 * Some legacy 11b clients cannot hack a complete 1513 * probe response frame. When the request includes 1514 * only a bare-bones rate set, communicate this to 1515 * the transmit side. 1516 */ 1517 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1518 break; 1519 } 1520 1521 case IEEE80211_FC0_SUBTYPE_ACTION: 1522 case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: 1523 if (ni == vap->iv_bss) { 1524 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1525 wh, NULL, "%s", "unknown node"); 1526 vap->iv_stats.is_rx_mgtdiscard++; 1527 } else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1528 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1529 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1530 wh, NULL, "%s", "not for us"); 1531 vap->iv_stats.is_rx_mgtdiscard++; 1532 } else if (vap->iv_state != IEEE80211_S_RUN) { 1533 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1534 wh, NULL, "wrong state %s", 1535 ieee80211_state_name[vap->iv_state]); 1536 vap->iv_stats.is_rx_mgtdiscard++; 1537 } else { 1538 if (ieee80211_parse_action(ni, m0) == 0) 1539 (void)ic->ic_recv_action(ni, wh, frm, efrm); 1540 } 1541 break; 1542 1543 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1544 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1545 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1546 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1547 case IEEE80211_FC0_SUBTYPE_ATIM: 1548 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1549 case IEEE80211_FC0_SUBTYPE_AUTH: 1550 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1551 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1552 wh, NULL, "%s", "not handled"); 1553 vap->iv_stats.is_rx_mgtdiscard++; 1554 break; 1555 1556 default: 1557 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1558 wh, "mgt", "subtype 0x%x not handled", subtype); 1559 vap->iv_stats.is_rx_badsubtype++; 1560 break; 1561 } 1562} 1563 1564static void 1565mesh_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 1566{ 1567 1568 switch (subtype) { 1569 case IEEE80211_FC0_SUBTYPE_BAR: 1570 ieee80211_recv_bar(ni, m); 1571 break; 1572 } 1573} 1574 1575/* 1576 * Parse meshpeering action ie's for open+confirm frames 1577 */ 1578static const struct ieee80211_meshpeer_ie * 1579mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1580 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1581 const uint8_t *frm, const uint8_t *efrm, 1582 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1583{ 1584 struct ieee80211vap *vap = ni->ni_vap; 1585 const struct ieee80211_meshpeer_ie *mpie; 1586 const uint8_t *meshid, *meshconf, *meshpeer; 1587 1588 meshid = meshconf = meshpeer = NULL; 1589 while (efrm - frm > 1) { 1590 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1591 switch (*frm) { 1592 case IEEE80211_ELEMID_MESHID: 1593 meshid = frm; 1594 break; 1595 case IEEE80211_ELEMID_MESHCONF: 1596 meshconf = frm; 1597 break; 1598 case IEEE80211_ELEMID_MESHPEER: 1599 meshpeer = frm; 1600 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1601 memset(mp, 0, sizeof(*mp)); 1602 mp->peer_proto = LE_READ_2(&mpie->peer_proto); 1603 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1604 switch (subtype) { 1605 case IEEE80211_ACTION_MESHPEERING_CONFIRM: 1606 mp->peer_linkid = 1607 LE_READ_2(&mpie->peer_linkid); 1608 break; 1609 case IEEE80211_ACTION_MESHPEERING_CLOSE: 1610 /* NB: peer link ID is optional */ 1611 if (mpie->peer_len == 1612 (IEEE80211_MPM_BASE_SZ + 2)) { 1613 mp->peer_linkid = 0; 1614 mp->peer_rcode = 1615 LE_READ_2(&mpie->peer_linkid); 1616 } else { 1617 mp->peer_linkid = 1618 LE_READ_2(&mpie->peer_linkid); 1619 mp->peer_rcode = 1620 LE_READ_2(&mpie->peer_rcode); 1621 } 1622 break; 1623 } 1624 break; 1625 } 1626 frm += frm[1] + 2; 1627 } 1628 1629 /* 1630 * Verify the contents of the frame. Action frames with 1631 * close subtype don't have a Mesh Configuration IE. 1632 * If if fails validation, close the peer link. 1633 */ 1634 KASSERT(meshpeer != NULL && 1635 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1636 ("parsing close action")); 1637 1638 if (mesh_verify_meshid(vap, meshid) || 1639 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1640 mesh_verify_meshconf(vap, meshconf)) { 1641 uint16_t args[3]; 1642 1643 IEEE80211_DISCARD(vap, 1644 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1645 wh, NULL, "%s", "not for our mesh"); 1646 vap->iv_stats.is_rx_mgtdiscard++; 1647 switch (ni->ni_mlstate) { 1648 case IEEE80211_NODE_MESH_IDLE: 1649 case IEEE80211_NODE_MESH_ESTABLISHED: 1650 case IEEE80211_NODE_MESH_HOLDING: 1651 /* ignore */ 1652 break; 1653 case IEEE80211_NODE_MESH_OPENSNT: 1654 case IEEE80211_NODE_MESH_OPENRCV: 1655 case IEEE80211_NODE_MESH_CONFIRMRCV: 1656 args[0] = ni->ni_mlpid; 1657 args[1] = ni->ni_mllid; 1658 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1659 ieee80211_send_action(ni, 1660 IEEE80211_ACTION_CAT_SELF_PROT, 1661 IEEE80211_ACTION_MESHPEERING_CLOSE, 1662 args); 1663 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1664 mesh_peer_timeout_setup(ni); 1665 break; 1666 } 1667 return NULL; 1668 } 1669 return (const struct ieee80211_meshpeer_ie *) mp; 1670} 1671 1672static int 1673mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1674 const struct ieee80211_frame *wh, 1675 const uint8_t *frm, const uint8_t *efrm) 1676{ 1677 struct ieee80211vap *vap = ni->ni_vap; 1678 struct ieee80211_meshpeer_ie ie; 1679 const struct ieee80211_meshpeer_ie *meshpeer; 1680 uint16_t args[3]; 1681 1682 /* +2+2 for action + code + capabilites */ 1683 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1684 IEEE80211_ACTION_MESHPEERING_OPEN); 1685 if (meshpeer == NULL) { 1686 return 0; 1687 } 1688 1689 /* XXX move up */ 1690 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1691 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1692 1693 switch (ni->ni_mlstate) { 1694 case IEEE80211_NODE_MESH_IDLE: 1695 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1696 ni->ni_mllid = meshpeer->peer_llinkid; 1697 ni->ni_mlpid = mesh_generateid(vap); 1698 if (ni->ni_mlpid == 0) 1699 return 0; /* XXX */ 1700 args[0] = ni->ni_mlpid; 1701 /* Announce we're open too... */ 1702 ieee80211_send_action(ni, 1703 IEEE80211_ACTION_CAT_SELF_PROT, 1704 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1705 /* ...and confirm the link. */ 1706 args[0] = ni->ni_mlpid; 1707 args[1] = ni->ni_mllid; 1708 ieee80211_send_action(ni, 1709 IEEE80211_ACTION_CAT_SELF_PROT, 1710 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1711 args); 1712 mesh_peer_timeout_setup(ni); 1713 break; 1714 case IEEE80211_NODE_MESH_OPENRCV: 1715 /* Wrong Link ID */ 1716 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1717 args[0] = ni->ni_mllid; 1718 args[1] = ni->ni_mlpid; 1719 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1720 ieee80211_send_action(ni, 1721 IEEE80211_ACTION_CAT_SELF_PROT, 1722 IEEE80211_ACTION_MESHPEERING_CLOSE, 1723 args); 1724 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1725 mesh_peer_timeout_setup(ni); 1726 break; 1727 } 1728 /* Duplicate open, confirm again. */ 1729 args[0] = ni->ni_mlpid; 1730 args[1] = ni->ni_mllid; 1731 ieee80211_send_action(ni, 1732 IEEE80211_ACTION_CAT_SELF_PROT, 1733 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1734 args); 1735 break; 1736 case IEEE80211_NODE_MESH_OPENSNT: 1737 ni->ni_mllid = meshpeer->peer_llinkid; 1738 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1739 args[0] = ni->ni_mlpid; 1740 args[1] = ni->ni_mllid; 1741 ieee80211_send_action(ni, 1742 IEEE80211_ACTION_CAT_SELF_PROT, 1743 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1744 args); 1745 /* NB: don't setup/clear any timeout */ 1746 break; 1747 case IEEE80211_NODE_MESH_CONFIRMRCV: 1748 if (ni->ni_mlpid != meshpeer->peer_linkid || 1749 ni->ni_mllid != meshpeer->peer_llinkid) { 1750 args[0] = ni->ni_mlpid; 1751 args[1] = ni->ni_mllid; 1752 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1753 ieee80211_send_action(ni, 1754 IEEE80211_ACTION_CAT_SELF_PROT, 1755 IEEE80211_ACTION_MESHPEERING_CLOSE, 1756 args); 1757 mesh_linkchange(ni, 1758 IEEE80211_NODE_MESH_HOLDING); 1759 mesh_peer_timeout_setup(ni); 1760 break; 1761 } 1762 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1763 ni->ni_mllid = meshpeer->peer_llinkid; 1764 args[0] = ni->ni_mlpid; 1765 args[1] = ni->ni_mllid; 1766 ieee80211_send_action(ni, 1767 IEEE80211_ACTION_CAT_SELF_PROT, 1768 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1769 args); 1770 mesh_peer_timeout_stop(ni); 1771 break; 1772 case IEEE80211_NODE_MESH_ESTABLISHED: 1773 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1774 args[0] = ni->ni_mllid; 1775 args[1] = ni->ni_mlpid; 1776 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1777 ieee80211_send_action(ni, 1778 IEEE80211_ACTION_CAT_SELF_PROT, 1779 IEEE80211_ACTION_MESHPEERING_CLOSE, 1780 args); 1781 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1782 mesh_peer_timeout_setup(ni); 1783 break; 1784 } 1785 args[0] = ni->ni_mlpid; 1786 args[1] = ni->ni_mllid; 1787 ieee80211_send_action(ni, 1788 IEEE80211_ACTION_CAT_SELF_PROT, 1789 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1790 args); 1791 break; 1792 case IEEE80211_NODE_MESH_HOLDING: 1793 args[0] = ni->ni_mlpid; 1794 args[1] = meshpeer->peer_llinkid; 1795 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1796 ieee80211_send_action(ni, 1797 IEEE80211_ACTION_CAT_SELF_PROT, 1798 IEEE80211_ACTION_MESHPEERING_CLOSE, 1799 args); 1800 break; 1801 } 1802 return 0; 1803} 1804 1805static int 1806mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1807 const struct ieee80211_frame *wh, 1808 const uint8_t *frm, const uint8_t *efrm) 1809{ 1810 struct ieee80211vap *vap = ni->ni_vap; 1811 struct ieee80211_meshpeer_ie ie; 1812 const struct ieee80211_meshpeer_ie *meshpeer; 1813 uint16_t args[3]; 1814 1815 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1816 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1817 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1818 if (meshpeer == NULL) { 1819 return 0; 1820 } 1821 1822 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1823 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1824 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1825 1826 switch (ni->ni_mlstate) { 1827 case IEEE80211_NODE_MESH_OPENRCV: 1828 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1829 mesh_peer_timeout_stop(ni); 1830 break; 1831 case IEEE80211_NODE_MESH_OPENSNT: 1832 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1833 break; 1834 case IEEE80211_NODE_MESH_HOLDING: 1835 args[0] = ni->ni_mlpid; 1836 args[1] = meshpeer->peer_llinkid; 1837 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1838 ieee80211_send_action(ni, 1839 IEEE80211_ACTION_CAT_SELF_PROT, 1840 IEEE80211_ACTION_MESHPEERING_CLOSE, 1841 args); 1842 break; 1843 case IEEE80211_NODE_MESH_CONFIRMRCV: 1844 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1845 args[0] = ni->ni_mlpid; 1846 args[1] = ni->ni_mllid; 1847 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1848 ieee80211_send_action(ni, 1849 IEEE80211_ACTION_CAT_SELF_PROT, 1850 IEEE80211_ACTION_MESHPEERING_CLOSE, 1851 args); 1852 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1853 mesh_peer_timeout_setup(ni); 1854 } 1855 break; 1856 default: 1857 IEEE80211_DISCARD(vap, 1858 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1859 wh, NULL, "received confirm in invalid state %d", 1860 ni->ni_mlstate); 1861 vap->iv_stats.is_rx_mgtdiscard++; 1862 break; 1863 } 1864 return 0; 1865} 1866 1867static int 1868mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1869 const struct ieee80211_frame *wh, 1870 const uint8_t *frm, const uint8_t *efrm) 1871{ 1872 uint16_t args[3]; 1873 1874 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1875 ni, "%s", "recv PEER CLOSE"); 1876 1877 switch (ni->ni_mlstate) { 1878 case IEEE80211_NODE_MESH_IDLE: 1879 /* ignore */ 1880 break; 1881 case IEEE80211_NODE_MESH_OPENRCV: 1882 case IEEE80211_NODE_MESH_OPENSNT: 1883 case IEEE80211_NODE_MESH_CONFIRMRCV: 1884 case IEEE80211_NODE_MESH_ESTABLISHED: 1885 args[0] = ni->ni_mlpid; 1886 args[1] = ni->ni_mllid; 1887 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1888 ieee80211_send_action(ni, 1889 IEEE80211_ACTION_CAT_SELF_PROT, 1890 IEEE80211_ACTION_MESHPEERING_CLOSE, 1891 args); 1892 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1893 mesh_peer_timeout_setup(ni); 1894 break; 1895 case IEEE80211_NODE_MESH_HOLDING: 1896 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1897 mesh_peer_timeout_setup(ni); 1898 break; 1899 } 1900 return 0; 1901} 1902 1903/* 1904 * Link Metric handling. 1905 */ 1906static int 1907mesh_recv_action_meshlmetric(struct ieee80211_node *ni, 1908 const struct ieee80211_frame *wh, 1909 const uint8_t *frm, const uint8_t *efrm) 1910{ 1911 const struct ieee80211_meshlmetric_ie *ie = 1912 (const struct ieee80211_meshlmetric_ie *) 1913 (frm+2); /* action + code */ 1914 struct ieee80211_meshlmetric_ie lm_rep; 1915 1916 if (ie->lm_flags & IEEE80211_MESH_LMETRIC_FLAGS_REQ) { 1917 lm_rep.lm_flags = 0; 1918 lm_rep.lm_metric = mesh_airtime_calc(ni); 1919 ieee80211_send_action(ni, 1920 IEEE80211_ACTION_CAT_MESH, 1921 IEEE80211_ACTION_MESH_LMETRIC, 1922 &lm_rep); 1923 } 1924 /* XXX: else do nothing for now */ 1925 return 0; 1926} 1927 1928static int 1929mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1930{ 1931 struct ieee80211_bpf_params params; 1932 1933 memset(¶ms, 0, sizeof(params)); 1934 params.ibp_pri = WME_AC_VO; 1935 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1936 /* XXX ucast/mcast */ 1937 params.ibp_try0 = ni->ni_txparms->maxretry; 1938 params.ibp_power = ni->ni_txpower; 1939 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1940 ¶ms); 1941} 1942 1943#define ADDSHORT(frm, v) do { \ 1944 frm[0] = (v) & 0xff; \ 1945 frm[1] = (v) >> 8; \ 1946 frm += 2; \ 1947} while (0) 1948#define ADDWORD(frm, v) do { \ 1949 frm[0] = (v) & 0xff; \ 1950 frm[1] = ((v) >> 8) & 0xff; \ 1951 frm[2] = ((v) >> 16) & 0xff; \ 1952 frm[3] = ((v) >> 24) & 0xff; \ 1953 frm += 4; \ 1954} while (0) 1955 1956static int 1957mesh_send_action_meshpeering_open(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 OPEN action: localid 0x%x", args[0]); 1969 1970 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1971 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1972 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1973 ieee80211_ref_node(ni); 1974 1975 m = ieee80211_getmgtframe(&frm, 1976 ic->ic_headroom + sizeof(struct ieee80211_frame), 1977 sizeof(uint16_t) /* action+category */ 1978 + sizeof(uint16_t) /* capabilites */ 1979 + 2 + IEEE80211_RATE_SIZE 1980 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1981 + 2 + IEEE80211_MESHID_LEN 1982 + sizeof(struct ieee80211_meshconf_ie) 1983 + sizeof(struct ieee80211_meshpeer_ie) 1984 ); 1985 if (m != NULL) { 1986 /* 1987 * mesh peer open action frame format: 1988 * [1] category 1989 * [1] action 1990 * [2] capabilities 1991 * [tlv] rates 1992 * [tlv] xrates 1993 * [tlv] mesh id 1994 * [tlv] mesh conf 1995 * [tlv] mesh peer link mgmt 1996 */ 1997 *frm++ = category; 1998 *frm++ = action; 1999 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2000 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2001 frm = ieee80211_add_rates(frm, rs); 2002 frm = ieee80211_add_xrates(frm, rs); 2003 frm = ieee80211_add_meshid(frm, vap); 2004 frm = ieee80211_add_meshconf(frm, vap); 2005 frm = ieee80211_add_meshpeer(frm, IEEE80211_ACTION_MESHPEERING_OPEN, 2006 args[0], 0, 0); 2007 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2008 return mesh_send_action(ni, m); 2009 } else { 2010 vap->iv_stats.is_tx_nobuf++; 2011 ieee80211_free_node(ni); 2012 return ENOMEM; 2013 } 2014} 2015 2016static int 2017mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 2018 int category, int action, void *args0) 2019{ 2020 struct ieee80211vap *vap = ni->ni_vap; 2021 struct ieee80211com *ic = ni->ni_ic; 2022 uint16_t *args = args0; 2023 const struct ieee80211_rateset *rs; 2024 struct mbuf *m; 2025 uint8_t *frm; 2026 2027 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2028 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 2029 args[0], args[1]); 2030 2031 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2032 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2033 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2034 ieee80211_ref_node(ni); 2035 2036 m = ieee80211_getmgtframe(&frm, 2037 ic->ic_headroom + sizeof(struct ieee80211_frame), 2038 sizeof(uint16_t) /* action+category */ 2039 + sizeof(uint16_t) /* capabilites */ 2040 + sizeof(uint16_t) /* status code */ 2041 + sizeof(uint16_t) /* AID */ 2042 + 2 + IEEE80211_RATE_SIZE 2043 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 2044 + 2 + IEEE80211_MESHID_LEN 2045 + sizeof(struct ieee80211_meshconf_ie) 2046 + sizeof(struct ieee80211_meshpeer_ie) 2047 ); 2048 if (m != NULL) { 2049 /* 2050 * mesh peer confirm action frame format: 2051 * [1] category 2052 * [1] action 2053 * [2] capabilities 2054 * [2] status code 2055 * [2] association id (peer ID) 2056 * [tlv] rates 2057 * [tlv] xrates 2058 * [tlv] mesh id 2059 * [tlv] mesh conf 2060 * [tlv] mesh peer link mgmt 2061 */ 2062 *frm++ = category; 2063 *frm++ = action; 2064 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2065 ADDSHORT(frm, 0); /* status code */ 2066 ADDSHORT(frm, args[1]); /* AID */ 2067 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2068 frm = ieee80211_add_rates(frm, rs); 2069 frm = ieee80211_add_xrates(frm, rs); 2070 frm = ieee80211_add_meshid(frm, vap); 2071 frm = ieee80211_add_meshconf(frm, vap); 2072 frm = ieee80211_add_meshpeer(frm, 2073 IEEE80211_ACTION_MESHPEERING_CONFIRM, 2074 args[0], args[1], 0); 2075 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2076 return mesh_send_action(ni, m); 2077 } else { 2078 vap->iv_stats.is_tx_nobuf++; 2079 ieee80211_free_node(ni); 2080 return ENOMEM; 2081 } 2082} 2083 2084static int 2085mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2086 int category, int action, void *args0) 2087{ 2088 struct ieee80211vap *vap = ni->ni_vap; 2089 struct ieee80211com *ic = ni->ni_ic; 2090 uint16_t *args = args0; 2091 struct mbuf *m; 2092 uint8_t *frm; 2093 2094 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2095 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2096 args[0], args[1], args[2]); 2097 2098 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2099 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2100 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2101 ieee80211_ref_node(ni); 2102 2103 m = ieee80211_getmgtframe(&frm, 2104 ic->ic_headroom + sizeof(struct ieee80211_frame), 2105 sizeof(uint16_t) /* action+category */ 2106 + sizeof(uint16_t) /* reason code */ 2107 + 2 + IEEE80211_MESHID_LEN 2108 + sizeof(struct ieee80211_meshpeer_ie) 2109 ); 2110 if (m != NULL) { 2111 /* 2112 * mesh peer close action frame format: 2113 * [1] category 2114 * [1] action 2115 * [2] reason code 2116 * [tlv] mesh id 2117 * [tlv] mesh peer link mgmt 2118 */ 2119 *frm++ = category; 2120 *frm++ = action; 2121 ADDSHORT(frm, args[2]); /* reason code */ 2122 frm = ieee80211_add_meshid(frm, vap); 2123 frm = ieee80211_add_meshpeer(frm, 2124 IEEE80211_ACTION_MESHPEERING_CLOSE, 2125 args[0], args[1], args[2]); 2126 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2127 return mesh_send_action(ni, m); 2128 } else { 2129 vap->iv_stats.is_tx_nobuf++; 2130 ieee80211_free_node(ni); 2131 return ENOMEM; 2132 } 2133} 2134 2135static int 2136mesh_send_action_meshlmetric(struct ieee80211_node *ni, 2137 int category, int action, void *arg0) 2138{ 2139 struct ieee80211vap *vap = ni->ni_vap; 2140 struct ieee80211com *ic = ni->ni_ic; 2141 struct ieee80211_meshlmetric_ie *ie = arg0; 2142 struct mbuf *m; 2143 uint8_t *frm; 2144 2145 if (ie->lm_flags & IEEE80211_MESH_LMETRIC_FLAGS_REQ) { 2146 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2147 ni, "%s", "send LINK METRIC REQUEST action"); 2148 } else { 2149 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2150 ni, "send LINK METRIC REPLY action: metric 0x%x", 2151 ie->lm_metric); 2152 } 2153 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2154 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2155 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2156 ieee80211_ref_node(ni); 2157 2158 m = ieee80211_getmgtframe(&frm, 2159 ic->ic_headroom + sizeof(struct ieee80211_frame), 2160 sizeof(uint16_t) + /* action+category */ 2161 sizeof(struct ieee80211_meshlmetric_ie) 2162 ); 2163 if (m != NULL) { 2164 /* 2165 * mesh link metric 2166 * [1] category 2167 * [1] action 2168 * [tlv] mesh link metric 2169 */ 2170 *frm++ = category; 2171 *frm++ = action; 2172 frm = ieee80211_add_meshlmetric(frm, 2173 ie->lm_flags, ie->lm_metric); 2174 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2175 return mesh_send_action(ni, m); 2176 } else { 2177 vap->iv_stats.is_tx_nobuf++; 2178 ieee80211_free_node(ni); 2179 return ENOMEM; 2180 } 2181} 2182 2183static void 2184mesh_peer_timeout_setup(struct ieee80211_node *ni) 2185{ 2186 switch (ni->ni_mlstate) { 2187 case IEEE80211_NODE_MESH_HOLDING: 2188 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2189 break; 2190 case IEEE80211_NODE_MESH_CONFIRMRCV: 2191 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2192 break; 2193 case IEEE80211_NODE_MESH_IDLE: 2194 ni->ni_mltval = 0; 2195 break; 2196 default: 2197 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2198 break; 2199 } 2200 if (ni->ni_mltval) 2201 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2202 mesh_peer_timeout_cb, ni); 2203} 2204 2205/* 2206 * Same as above but backoffs timer statisically 50%. 2207 */ 2208static void 2209mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2210{ 2211 uint32_t r; 2212 2213 r = arc4random(); 2214 ni->ni_mltval += r % ni->ni_mltval; 2215 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2216 ni); 2217} 2218 2219static __inline void 2220mesh_peer_timeout_stop(struct ieee80211_node *ni) 2221{ 2222 callout_drain(&ni->ni_mltimer); 2223} 2224 2225/* 2226 * Mesh Peer Link Management FSM timeout handling. 2227 */ 2228static void 2229mesh_peer_timeout_cb(void *arg) 2230{ 2231 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2232 uint16_t args[3]; 2233 2234 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2235 ni, "mesh link timeout, state %d, retry counter %d", 2236 ni->ni_mlstate, ni->ni_mlrcnt); 2237 2238 switch (ni->ni_mlstate) { 2239 case IEEE80211_NODE_MESH_IDLE: 2240 case IEEE80211_NODE_MESH_ESTABLISHED: 2241 break; 2242 case IEEE80211_NODE_MESH_OPENSNT: 2243 case IEEE80211_NODE_MESH_OPENRCV: 2244 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2245 args[0] = ni->ni_mlpid; 2246 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2247 ieee80211_send_action(ni, 2248 IEEE80211_ACTION_CAT_SELF_PROT, 2249 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2250 ni->ni_mlrcnt = 0; 2251 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2252 mesh_peer_timeout_setup(ni); 2253 } else { 2254 args[0] = ni->ni_mlpid; 2255 ieee80211_send_action(ni, 2256 IEEE80211_ACTION_CAT_SELF_PROT, 2257 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2258 ni->ni_mlrcnt++; 2259 mesh_peer_timeout_backoff(ni); 2260 } 2261 break; 2262 case IEEE80211_NODE_MESH_CONFIRMRCV: 2263 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2264 args[0] = ni->ni_mlpid; 2265 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2266 ieee80211_send_action(ni, 2267 IEEE80211_ACTION_CAT_SELF_PROT, 2268 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2269 ni->ni_mlrcnt = 0; 2270 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2271 mesh_peer_timeout_setup(ni); 2272 } else { 2273 ni->ni_mlrcnt++; 2274 mesh_peer_timeout_setup(ni); 2275 } 2276 break; 2277 case IEEE80211_NODE_MESH_HOLDING: 2278 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2279 break; 2280 } 2281} 2282 2283static int 2284mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2285{ 2286 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2287 2288 if (ie == NULL || ie[1] != ms->ms_idlen) 2289 return 1; 2290 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2291} 2292 2293/* 2294 * Check if we are using the same algorithms for this mesh. 2295 */ 2296static int 2297mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2298{ 2299 const struct ieee80211_meshconf_ie *meshconf = 2300 (const struct ieee80211_meshconf_ie *) ie; 2301 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2302 2303 if (meshconf == NULL) 2304 return 1; 2305 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2306 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2307 "unknown path selection algorithm: 0x%x\n", 2308 meshconf->conf_pselid); 2309 return 1; 2310 } 2311 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2312 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2313 "unknown path metric algorithm: 0x%x\n", 2314 meshconf->conf_pmetid); 2315 return 1; 2316 } 2317 if (meshconf->conf_ccid != 0) { 2318 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2319 "unknown congestion control algorithm: 0x%x\n", 2320 meshconf->conf_ccid); 2321 return 1; 2322 } 2323 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2324 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2325 "unknown sync algorithm: 0x%x\n", 2326 meshconf->conf_syncid); 2327 return 1; 2328 } 2329 if (meshconf->conf_authid != 0) { 2330 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2331 "unknown auth auth algorithm: 0x%x\n", 2332 meshconf->conf_pselid); 2333 return 1; 2334 } 2335 /* Not accepting peers */ 2336 if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) { 2337 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2338 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2339 return 1; 2340 } 2341 return 0; 2342} 2343 2344static int 2345mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2346 const uint8_t *ie) 2347{ 2348 const struct ieee80211_meshpeer_ie *meshpeer = 2349 (const struct ieee80211_meshpeer_ie *) ie; 2350 2351 if (meshpeer == NULL || 2352 meshpeer->peer_len < IEEE80211_MPM_BASE_SZ || 2353 meshpeer->peer_len > IEEE80211_MPM_MAX_SZ) 2354 return 1; 2355 if (meshpeer->peer_proto != IEEE80211_MPPID_MPM) { 2356 IEEE80211_DPRINTF(vap, 2357 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2358 "Only MPM protocol is supported (proto: 0x%02X)", 2359 meshpeer->peer_proto); 2360 return 1; 2361 } 2362 switch (subtype) { 2363 case IEEE80211_ACTION_MESHPEERING_OPEN: 2364 if (meshpeer->peer_len != IEEE80211_MPM_BASE_SZ) 2365 return 1; 2366 break; 2367 case IEEE80211_ACTION_MESHPEERING_CONFIRM: 2368 if (meshpeer->peer_len != IEEE80211_MPM_BASE_SZ + 2) 2369 return 1; 2370 break; 2371 case IEEE80211_ACTION_MESHPEERING_CLOSE: 2372 if (meshpeer->peer_len < IEEE80211_MPM_BASE_SZ + 2) 2373 return 1; 2374 if (meshpeer->peer_len == (IEEE80211_MPM_BASE_SZ + 2) && 2375 meshpeer->peer_linkid != 0) 2376 return 1; 2377 if (meshpeer->peer_rcode == 0) 2378 return 1; 2379 break; 2380 } 2381 return 0; 2382} 2383 2384/* 2385 * Add a Mesh ID IE to a frame. 2386 */ 2387uint8_t * 2388ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2389{ 2390 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2391 2392 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2393 2394 *frm++ = IEEE80211_ELEMID_MESHID; 2395 *frm++ = ms->ms_idlen; 2396 memcpy(frm, ms->ms_id, ms->ms_idlen); 2397 return frm + ms->ms_idlen; 2398} 2399 2400/* 2401 * Add a Mesh Configuration IE to a frame. 2402 * For now just use HWMP routing, Airtime link metric, Null Congestion 2403 * Signaling, Null Sync Protocol and Null Authentication. 2404 */ 2405uint8_t * 2406ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2407{ 2408 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2409 uint16_t caps; 2410 2411 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2412 2413 *frm++ = IEEE80211_ELEMID_MESHCONF; 2414 *frm++ = IEEE80211_MESH_CONF_SZ; 2415 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2416 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2417 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2418 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2419 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2420 /* NB: set the number of neighbors before the rest */ 2421 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2422 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2423 *frm |= IEEE80211_MESHCONF_FORM_MP; 2424 frm += 1; 2425 caps = 0; 2426 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2427 caps |= IEEE80211_MESHCONF_CAP_AP; 2428 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2429 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2430 *frm++ = caps; 2431 return frm; 2432} 2433 2434/* 2435 * Add a Mesh Peer Management IE to a frame. 2436 */ 2437uint8_t * 2438ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2439 uint16_t peerid, uint16_t reason) 2440{ 2441 2442 KASSERT(localid != 0, ("localid == 0")); 2443 2444 *frm++ = IEEE80211_ELEMID_MESHPEER; 2445 switch (subtype) { 2446 case IEEE80211_ACTION_MESHPEERING_OPEN: 2447 *frm++ = IEEE80211_MPM_BASE_SZ; /* length */ 2448 ADDSHORT(frm, IEEE80211_MPPID_MPM); /* proto */ 2449 ADDSHORT(frm, localid); /* local ID */ 2450 break; 2451 case IEEE80211_ACTION_MESHPEERING_CONFIRM: 2452 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2453 *frm++ = IEEE80211_MPM_BASE_SZ + 2; /* length */ 2454 ADDSHORT(frm, IEEE80211_MPPID_MPM); /* proto */ 2455 ADDSHORT(frm, localid); /* local ID */ 2456 ADDSHORT(frm, peerid); /* peer ID */ 2457 break; 2458 case IEEE80211_ACTION_MESHPEERING_CLOSE: 2459 if (peerid) 2460 *frm++ = IEEE80211_MPM_MAX_SZ; /* length */ 2461 else 2462 *frm++ = IEEE80211_MPM_BASE_SZ + 2; /* length */ 2463 ADDSHORT(frm, IEEE80211_MPPID_MPM); /* proto */ 2464 ADDSHORT(frm, localid); /* local ID */ 2465 if (peerid) 2466 ADDSHORT(frm, peerid); /* peer ID */ 2467 ADDSHORT(frm, reason); 2468 break; 2469 } 2470 return frm; 2471} 2472 2473/* 2474 * Compute an Airtime Link Metric for the link with this node. 2475 * 2476 * Based on Draft 3.0 spec (11B.10, p.149). 2477 */ 2478/* 2479 * Max 802.11s overhead. 2480 */ 2481#define IEEE80211_MESH_MAXOVERHEAD \ 2482 (sizeof(struct ieee80211_qosframe_addr4) \ 2483 + sizeof(struct ieee80211_meshcntl_ae11) \ 2484 + sizeof(struct llc) \ 2485 + IEEE80211_ADDR_LEN \ 2486 + IEEE80211_WEP_IVLEN \ 2487 + IEEE80211_WEP_KIDLEN \ 2488 + IEEE80211_WEP_CRCLEN \ 2489 + IEEE80211_WEP_MICLEN \ 2490 + IEEE80211_CRC_LEN) 2491uint32_t 2492mesh_airtime_calc(struct ieee80211_node *ni) 2493{ 2494#define M_BITS 8 2495#define S_FACTOR (2 * M_BITS) 2496 struct ieee80211com *ic = ni->ni_ic; 2497 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2498 const static int nbits = 8192 << M_BITS; 2499 uint32_t overhead, rate, errrate; 2500 uint64_t res; 2501 2502 /* Time to transmit a frame */ 2503 rate = ni->ni_txrate; 2504 overhead = ieee80211_compute_duration(ic->ic_rt, 2505 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2506 /* Error rate in percentage */ 2507 /* XXX assuming small failures are ok */ 2508 errrate = (((ifp->if_oerrors + 2509 ifp->if_ierrors) / 100) << M_BITS) / 100; 2510 res = (overhead + (nbits / rate)) * 2511 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2512 2513 return (uint32_t)(res >> S_FACTOR); 2514#undef M_BITS 2515#undef S_FACTOR 2516} 2517 2518/* 2519 * Add a Mesh Link Metric report IE to a frame. 2520 */ 2521uint8_t * 2522ieee80211_add_meshlmetric(uint8_t *frm, uint8_t flags, uint32_t metric) 2523{ 2524 *frm++ = IEEE80211_ELEMID_MESHLINK; 2525 *frm++ = 5; 2526 *frm++ = flags; 2527 ADDWORD(frm, metric); 2528 return frm; 2529} 2530#undef ADDSHORT 2531#undef ADDWORD 2532 2533/* 2534 * Initialize any mesh-specific node state. 2535 */ 2536void 2537ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2538{ 2539 ni->ni_flags |= IEEE80211_NODE_QOS; 2540 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2541} 2542 2543/* 2544 * Cleanup any mesh-specific node state. 2545 */ 2546void 2547ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2548{ 2549 struct ieee80211vap *vap = ni->ni_vap; 2550 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2551 2552 callout_drain(&ni->ni_mltimer); 2553 /* NB: short-circuit callbacks after mesh_vdetach */ 2554 if (vap->iv_mesh != NULL) 2555 ms->ms_ppath->mpp_peerdown(ni); 2556} 2557 2558void 2559ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2560{ 2561 ni->ni_meshidlen = ie[1]; 2562 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2563} 2564 2565/* 2566 * Setup mesh-specific node state on neighbor discovery. 2567 */ 2568void 2569ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2570 const struct ieee80211_frame *wh, 2571 const struct ieee80211_scanparams *sp) 2572{ 2573 ieee80211_parse_meshid(ni, sp->meshid); 2574} 2575 2576void 2577ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2578 struct ieee80211_beacon_offsets *bo) 2579{ 2580 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2581 2582 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2583 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2584 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2585 } 2586} 2587 2588static int 2589mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2590{ 2591 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2592 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2593 struct ieee80211_mesh_route *rt; 2594 struct ieee80211req_mesh_route *imr; 2595 size_t len, off; 2596 uint8_t *p; 2597 int error; 2598 2599 if (vap->iv_opmode != IEEE80211_M_MBSS) 2600 return ENOSYS; 2601 2602 error = 0; 2603 switch (ireq->i_type) { 2604 case IEEE80211_IOC_MESH_ID: 2605 ireq->i_len = ms->ms_idlen; 2606 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2607 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2608 break; 2609 case IEEE80211_IOC_MESH_AP: 2610 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2611 break; 2612 case IEEE80211_IOC_MESH_FWRD: 2613 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2614 break; 2615 case IEEE80211_IOC_MESH_TTL: 2616 ireq->i_val = ms->ms_ttl; 2617 break; 2618 case IEEE80211_IOC_MESH_RTCMD: 2619 switch (ireq->i_val) { 2620 case IEEE80211_MESH_RTCMD_LIST: 2621 len = 0; 2622 MESH_RT_LOCK(ms); 2623 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2624 len += sizeof(*imr); 2625 } 2626 MESH_RT_UNLOCK(ms); 2627 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2628 ireq->i_len = len; 2629 return ENOMEM; 2630 } 2631 ireq->i_len = len; 2632 /* XXX M_WAIT? */ 2633 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2634 if (p == NULL) 2635 return ENOMEM; 2636 off = 0; 2637 MESH_RT_LOCK(ms); 2638 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2639 if (off >= len) 2640 break; 2641 imr = (struct ieee80211req_mesh_route *) 2642 (p + off); 2643 imr->imr_flags = rt->rt_flags; 2644 IEEE80211_ADDR_COPY(imr->imr_dest, 2645 rt->rt_dest); 2646 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2647 rt->rt_nexthop); 2648 imr->imr_metric = rt->rt_metric; 2649 imr->imr_nhops = rt->rt_nhops; 2650 imr->imr_lifetime = rt->rt_lifetime; 2651 imr->imr_lastmseq = rt->rt_lastmseq; 2652 off += sizeof(*imr); 2653 } 2654 MESH_RT_UNLOCK(ms); 2655 error = copyout(p, (uint8_t *)ireq->i_data, 2656 ireq->i_len); 2657 free(p, M_TEMP); 2658 break; 2659 case IEEE80211_MESH_RTCMD_FLUSH: 2660 case IEEE80211_MESH_RTCMD_ADD: 2661 case IEEE80211_MESH_RTCMD_DELETE: 2662 return EINVAL; 2663 default: 2664 return ENOSYS; 2665 } 2666 break; 2667 case IEEE80211_IOC_MESH_PR_METRIC: 2668 len = strlen(ms->ms_pmetric->mpm_descr); 2669 if (ireq->i_len < len) 2670 return EINVAL; 2671 ireq->i_len = len; 2672 error = copyout(ms->ms_pmetric->mpm_descr, 2673 (uint8_t *)ireq->i_data, len); 2674 break; 2675 case IEEE80211_IOC_MESH_PR_PATH: 2676 len = strlen(ms->ms_ppath->mpp_descr); 2677 if (ireq->i_len < len) 2678 return EINVAL; 2679 ireq->i_len = len; 2680 error = copyout(ms->ms_ppath->mpp_descr, 2681 (uint8_t *)ireq->i_data, len); 2682 break; 2683 default: 2684 return ENOSYS; 2685 } 2686 2687 return error; 2688} 2689IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2690 2691static int 2692mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2693{ 2694 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2695 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2696 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2697 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2698 int error; 2699 2700 if (vap->iv_opmode != IEEE80211_M_MBSS) 2701 return ENOSYS; 2702 2703 error = 0; 2704 switch (ireq->i_type) { 2705 case IEEE80211_IOC_MESH_ID: 2706 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2707 return EINVAL; 2708 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2709 if (error != 0) 2710 break; 2711 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2712 ms->ms_idlen = ireq->i_len; 2713 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2714 error = ENETRESET; 2715 break; 2716 case IEEE80211_IOC_MESH_AP: 2717 if (ireq->i_val) 2718 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2719 else 2720 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2721 error = ENETRESET; 2722 break; 2723 case IEEE80211_IOC_MESH_FWRD: 2724 if (ireq->i_val) 2725 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2726 else 2727 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2728 break; 2729 case IEEE80211_IOC_MESH_TTL: 2730 ms->ms_ttl = (uint8_t) ireq->i_val; 2731 break; 2732 case IEEE80211_IOC_MESH_RTCMD: 2733 switch (ireq->i_val) { 2734 case IEEE80211_MESH_RTCMD_LIST: 2735 return EINVAL; 2736 case IEEE80211_MESH_RTCMD_FLUSH: 2737 ieee80211_mesh_rt_flush(vap); 2738 break; 2739 case IEEE80211_MESH_RTCMD_ADD: 2740 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2741 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2742 return EINVAL; 2743 error = copyin(ireq->i_data, &tmpaddr, 2744 IEEE80211_ADDR_LEN); 2745 if (error == 0) 2746 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2747 break; 2748 case IEEE80211_MESH_RTCMD_DELETE: 2749 ieee80211_mesh_rt_del(vap, ireq->i_data); 2750 break; 2751 default: 2752 return ENOSYS; 2753 } 2754 break; 2755 case IEEE80211_IOC_MESH_PR_METRIC: 2756 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2757 if (error == 0) { 2758 error = mesh_select_proto_metric(vap, tmpproto); 2759 if (error == 0) 2760 error = ENETRESET; 2761 } 2762 break; 2763 case IEEE80211_IOC_MESH_PR_PATH: 2764 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2765 if (error == 0) { 2766 error = mesh_select_proto_path(vap, tmpproto); 2767 if (error == 0) 2768 error = ENETRESET; 2769 } 2770 break; 2771 default: 2772 return ENOSYS; 2773 } 2774 return error; 2775} 2776IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2777