ieee80211_mesh.c revision 198242
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 198242 2009-10-19 18:46:22Z rpaulo $"); 32#endif 33 34/* 35 * IEEE 802.11s Mesh Point (MBSS) support. 36 * 37 * Based on March 2009, D3.0 802.11s draft spec. 38 */ 39#include "opt_inet.h" 40#include "opt_wlan.h" 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/mbuf.h> 45#include <sys/malloc.h> 46#include <sys/kernel.h> 47 48#include <sys/socket.h> 49#include <sys/sockio.h> 50#include <sys/endian.h> 51#include <sys/errno.h> 52#include <sys/proc.h> 53#include <sys/sysctl.h> 54 55#include <net/if.h> 56#include <net/if_media.h> 57#include <net/if_llc.h> 58#include <net/ethernet.h> 59 60#include <net80211/ieee80211_var.h> 61#include <net80211/ieee80211_action.h> 62#include <net80211/ieee80211_input.h> 63#include <net80211/ieee80211_mesh.h> 64 65static void mesh_rt_flush_invalid(struct ieee80211vap *); 66static int mesh_select_proto_path(struct ieee80211vap *, const char *); 67static int mesh_select_proto_metric(struct ieee80211vap *, const char *); 68static void mesh_vattach(struct ieee80211vap *); 69static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); 70static void mesh_rt_cleanup_cb(void *); 71static void mesh_linkchange(struct ieee80211_node *, 72 enum ieee80211_mesh_mlstate); 73static void mesh_checkid(void *, struct ieee80211_node *); 74static uint32_t mesh_generateid(struct ieee80211vap *); 75static int mesh_checkpseq(struct ieee80211vap *, 76 const uint8_t [IEEE80211_ADDR_LEN], uint32_t); 77static struct ieee80211_node * 78 mesh_find_txnode(struct ieee80211vap *, 79 const uint8_t [IEEE80211_ADDR_LEN]); 80static void mesh_forward(struct ieee80211vap *, struct mbuf *, 81 const struct ieee80211_meshcntl *); 82static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int); 83static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 84 int, int); 85static void mesh_peer_timeout_setup(struct ieee80211_node *); 86static void mesh_peer_timeout_backoff(struct ieee80211_node *); 87static void mesh_peer_timeout_cb(void *); 88static __inline void 89 mesh_peer_timeout_stop(struct ieee80211_node *); 90static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 91static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 92static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 93 const uint8_t *); 94uint32_t mesh_airtime_calc(struct ieee80211_node *); 95 96/* 97 * Timeout values come from the specification and are in milliseconds. 98 */ 99SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 100 "IEEE 802.11s parameters"); 101static int ieee80211_mesh_retrytimeout = -1; 102SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 103 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 104 "Retry timeout (msec)"); 105static int ieee80211_mesh_holdingtimeout = -1; 106SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 107 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 108 "Holding state timeout (msec)"); 109static int ieee80211_mesh_confirmtimeout = -1; 110SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 111 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 112 "Confirm state timeout (msec)"); 113static int ieee80211_mesh_maxretries = 2; 114SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 115 &ieee80211_mesh_maxretries, 0, 116 "Maximum retries during peer link establishment"); 117 118static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 119 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 120 121static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 122static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 123static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 124static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req; 125static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep; 126 127static ieee80211_send_action_func mesh_send_action_meshpeering_open; 128static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 129static ieee80211_send_action_func mesh_send_action_meshpeering_close; 130static ieee80211_send_action_func mesh_send_action_meshlink_request; 131static ieee80211_send_action_func mesh_send_action_meshlink_reply; 132 133static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 134 .mpm_descr = "AIRTIME", 135 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 136 .mpm_metric = mesh_airtime_calc, 137}; 138 139static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 140static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 141 142#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) 143#define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 144#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 145 146MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 147 148/* 149 * Helper functions to manipulate the Mesh routing table. 150 */ 151 152static struct ieee80211_mesh_route * 153mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 154 const uint8_t dest[IEEE80211_ADDR_LEN]) 155{ 156 struct ieee80211_mesh_route *rt; 157 158 MESH_RT_LOCK_ASSERT(ms); 159 160 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 161 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 162 return rt; 163 } 164 return NULL; 165} 166 167static struct ieee80211_mesh_route * 168mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 169 const uint8_t dest[IEEE80211_ADDR_LEN]) 170{ 171 struct ieee80211_mesh_route *rt; 172 173 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 174 ("%s: adding broadcast to the routing table", __func__)); 175 176 MESH_RT_LOCK_ASSERT(ms); 177 178 rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 179 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 180 if (rt != NULL) { 181 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 182 rt->rt_priv = (void *)ALIGN(&rt[1]); 183 rt->rt_crtime = ticks; 184 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 185 } 186 return rt; 187} 188 189struct ieee80211_mesh_route * 190ieee80211_mesh_rt_find(struct ieee80211vap *vap, 191 const uint8_t dest[IEEE80211_ADDR_LEN]) 192{ 193 struct ieee80211_mesh_state *ms = vap->iv_mesh; 194 struct ieee80211_mesh_route *rt; 195 196 MESH_RT_LOCK(ms); 197 rt = mesh_rt_find_locked(ms, dest); 198 MESH_RT_UNLOCK(ms); 199 return rt; 200} 201 202struct ieee80211_mesh_route * 203ieee80211_mesh_rt_add(struct ieee80211vap *vap, 204 const uint8_t dest[IEEE80211_ADDR_LEN]) 205{ 206 struct ieee80211_mesh_state *ms = vap->iv_mesh; 207 struct ieee80211_mesh_route *rt; 208 209 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 210 ("%s: duplicate entry in the routing table", __func__)); 211 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 212 ("%s: adding self to the routing table", __func__)); 213 214 MESH_RT_LOCK(ms); 215 rt = mesh_rt_add_locked(ms, dest); 216 MESH_RT_UNLOCK(ms); 217 return rt; 218} 219 220/* 221 * Add a proxy route (as needed) for the specified destination. 222 */ 223void 224ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 225 const uint8_t dest[IEEE80211_ADDR_LEN]) 226{ 227 struct ieee80211_mesh_state *ms = vap->iv_mesh; 228 struct ieee80211_mesh_route *rt; 229 230 MESH_RT_LOCK(ms); 231 rt = mesh_rt_find_locked(ms, dest); 232 if (rt == NULL) { 233 rt = mesh_rt_add_locked(ms, dest); 234 if (rt == NULL) { 235 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 236 "%s", "unable to add proxy entry"); 237 vap->iv_stats.is_mesh_rtaddfailed++; 238 } else { 239 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 240 "%s", "add proxy entry"); 241 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 242 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 243 | IEEE80211_MESHRT_FLAGS_PROXY; 244 } 245 /* XXX assert PROXY? */ 246 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 247 struct ieee80211com *ic = vap->iv_ic; 248 /* 249 * Fix existing entry created by received frames from 250 * stations that have some memory of dest. We also 251 * flush any frames held on the staging queue; delivering 252 * them is too much trouble right now. 253 */ 254 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 255 "%s", "fix proxy entry"); 256 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 257 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 258 | IEEE80211_MESHRT_FLAGS_PROXY; 259 /* XXX belongs in hwmp */ 260 ieee80211_ageq_drain_node(&ic->ic_stageq, 261 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 262 /* XXX stat? */ 263 } 264 MESH_RT_UNLOCK(ms); 265} 266 267static __inline void 268mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 269{ 270 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 271 free(rt, M_80211_MESH_RT); 272} 273 274void 275ieee80211_mesh_rt_del(struct ieee80211vap *vap, 276 const uint8_t dest[IEEE80211_ADDR_LEN]) 277{ 278 struct ieee80211_mesh_state *ms = vap->iv_mesh; 279 struct ieee80211_mesh_route *rt, *next; 280 281 MESH_RT_LOCK(ms); 282 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 283 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 284 mesh_rt_del(ms, rt); 285 MESH_RT_UNLOCK(ms); 286 return; 287 } 288 } 289 MESH_RT_UNLOCK(ms); 290} 291 292void 293ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 294{ 295 struct ieee80211_mesh_state *ms = vap->iv_mesh; 296 struct ieee80211_mesh_route *rt, *next; 297 298 if (ms == NULL) 299 return; 300 MESH_RT_LOCK(ms); 301 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 302 mesh_rt_del(ms, rt); 303 MESH_RT_UNLOCK(ms); 304} 305 306void 307ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 308 const uint8_t peer[IEEE80211_ADDR_LEN]) 309{ 310 struct ieee80211_mesh_state *ms = vap->iv_mesh; 311 struct ieee80211_mesh_route *rt, *next; 312 313 MESH_RT_LOCK(ms); 314 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 315 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 316 mesh_rt_del(ms, rt); 317 } 318 MESH_RT_UNLOCK(ms); 319} 320 321/* 322 * Flush expired routing entries, i.e. those in invalid state for 323 * some time. 324 */ 325static void 326mesh_rt_flush_invalid(struct ieee80211vap *vap) 327{ 328 struct ieee80211_mesh_state *ms = vap->iv_mesh; 329 struct ieee80211_mesh_route *rt, *next; 330 331 if (ms == NULL) 332 return; 333 MESH_RT_LOCK(ms); 334 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 335 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 336 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 337 mesh_rt_del(ms, rt); 338 } 339 MESH_RT_UNLOCK(ms); 340} 341 342#define N(a) (sizeof(a) / sizeof(a[0])) 343int 344ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 345{ 346 int i, firstempty = -1; 347 348 for (i = 0; i < N(mesh_proto_paths); i++) { 349 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 350 IEEE80211_MESH_PROTO_DSZ) == 0) 351 return EEXIST; 352 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 353 firstempty = i; 354 } 355 if (firstempty < 0) 356 return ENOSPC; 357 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 358 mesh_proto_paths[firstempty].mpp_active = 1; 359 return 0; 360} 361 362int 363ieee80211_mesh_register_proto_metric(const struct 364 ieee80211_mesh_proto_metric *mpm) 365{ 366 int i, firstempty = -1; 367 368 for (i = 0; i < N(mesh_proto_metrics); i++) { 369 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 370 IEEE80211_MESH_PROTO_DSZ) == 0) 371 return EEXIST; 372 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 373 firstempty = i; 374 } 375 if (firstempty < 0) 376 return ENOSPC; 377 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 378 mesh_proto_metrics[firstempty].mpm_active = 1; 379 return 0; 380} 381 382static int 383mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 384{ 385 struct ieee80211_mesh_state *ms = vap->iv_mesh; 386 int i; 387 388 for (i = 0; i < N(mesh_proto_paths); i++) { 389 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 390 ms->ms_ppath = &mesh_proto_paths[i]; 391 if (vap->iv_state == IEEE80211_S_RUN) 392 vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 393 return 0; 394 } 395 } 396 return ENOENT; 397} 398 399static int 400mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 401{ 402 struct ieee80211_mesh_state *ms = vap->iv_mesh; 403 int i; 404 405 for (i = 0; i < N(mesh_proto_metrics); i++) { 406 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 407 ms->ms_pmetric = &mesh_proto_metrics[i]; 408 if (vap->iv_state == IEEE80211_S_RUN) 409 vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 410 return 0; 411 } 412 } 413 return ENOENT; 414} 415#undef N 416 417static void 418ieee80211_mesh_init(void) 419{ 420 421 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 422 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 423 424 /* 425 * Setup mesh parameters that depends on the clock frequency. 426 */ 427 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 428 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 429 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 430 431 /* 432 * Register action frame handlers. 433 */ 434 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 435 IEEE80211_ACTION_MESHPEERING_OPEN, 436 mesh_recv_action_meshpeering_open); 437 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 438 IEEE80211_ACTION_MESHPEERING_CONFIRM, 439 mesh_recv_action_meshpeering_confirm); 440 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 441 IEEE80211_ACTION_MESHPEERING_CLOSE, 442 mesh_recv_action_meshpeering_close); 443 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 444 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 445 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 446 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 447 448 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 449 IEEE80211_ACTION_MESHPEERING_OPEN, 450 mesh_send_action_meshpeering_open); 451 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 452 IEEE80211_ACTION_MESHPEERING_CONFIRM, 453 mesh_send_action_meshpeering_confirm); 454 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 455 IEEE80211_ACTION_MESHPEERING_CLOSE, 456 mesh_send_action_meshpeering_close); 457 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 458 IEEE80211_ACTION_MESHLMETRIC_REQ, 459 mesh_send_action_meshlink_request); 460 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 461 IEEE80211_ACTION_MESHLMETRIC_REP, 462 mesh_send_action_meshlink_reply); 463 464 /* 465 * Register Airtime Link Metric. 466 */ 467 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 468 469} 470SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 471 472void 473ieee80211_mesh_attach(struct ieee80211com *ic) 474{ 475 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 476} 477 478void 479ieee80211_mesh_detach(struct ieee80211com *ic) 480{ 481} 482 483static void 484mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 485{ 486 struct ieee80211com *ic = ni->ni_ic; 487 uint16_t args[3]; 488 489 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 490 args[0] = ni->ni_mlpid; 491 args[1] = ni->ni_mllid; 492 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 493 ieee80211_send_action(ni, 494 IEEE80211_ACTION_CAT_MESHPEERING, 495 IEEE80211_ACTION_MESHPEERING_CLOSE, 496 args); 497 } 498 callout_drain(&ni->ni_mltimer); 499 /* XXX belongs in hwmp */ 500 ieee80211_ageq_drain_node(&ic->ic_stageq, 501 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 502} 503 504static void 505mesh_vdetach(struct ieee80211vap *vap) 506{ 507 struct ieee80211_mesh_state *ms = vap->iv_mesh; 508 509 callout_drain(&ms->ms_cleantimer); 510 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 511 NULL); 512 ieee80211_mesh_rt_flush(vap); 513 mtx_destroy(&ms->ms_rt_lock); 514 ms->ms_ppath->mpp_vdetach(vap); 515 free(vap->iv_mesh, M_80211_VAP); 516 vap->iv_mesh = NULL; 517} 518 519static void 520mesh_vattach(struct ieee80211vap *vap) 521{ 522 struct ieee80211_mesh_state *ms; 523 vap->iv_newstate = mesh_newstate; 524 vap->iv_input = mesh_input; 525 vap->iv_opdetach = mesh_vdetach; 526 vap->iv_recv_mgmt = mesh_recv_mgmt; 527 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 528 M_NOWAIT | M_ZERO); 529 if (ms == NULL) { 530 printf("%s: couldn't alloc MBSS state\n", __func__); 531 return; 532 } 533 vap->iv_mesh = ms; 534 ms->ms_seq = 0; 535 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 536 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 537 TAILQ_INIT(&ms->ms_routes); 538 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 539 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 540 mesh_select_proto_metric(vap, "AIRTIME"); 541 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 542 mesh_select_proto_path(vap, "HWMP"); 543 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 544 ms->ms_ppath->mpp_vattach(vap); 545} 546 547/* 548 * IEEE80211_M_MBSS vap state machine handler. 549 */ 550static int 551mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 552{ 553 struct ieee80211_mesh_state *ms = vap->iv_mesh; 554 struct ieee80211com *ic = vap->iv_ic; 555 struct ieee80211_node *ni; 556 enum ieee80211_state ostate; 557 558 IEEE80211_LOCK_ASSERT(ic); 559 560 ostate = vap->iv_state; 561 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 562 __func__, ieee80211_state_name[ostate], 563 ieee80211_state_name[nstate], arg); 564 vap->iv_state = nstate; /* state transition */ 565 if (ostate != IEEE80211_S_SCAN) 566 ieee80211_cancel_scan(vap); /* background scan */ 567 ni = vap->iv_bss; /* NB: no reference held */ 568 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 569 callout_drain(&ms->ms_cleantimer); 570 switch (nstate) { 571 case IEEE80211_S_INIT: 572 switch (ostate) { 573 case IEEE80211_S_SCAN: 574 ieee80211_cancel_scan(vap); 575 break; 576 case IEEE80211_S_CAC: 577 ieee80211_dfs_cac_stop(vap); 578 break; 579 case IEEE80211_S_RUN: 580 ieee80211_iterate_nodes(&ic->ic_sta, 581 mesh_vdetach_peers, NULL); 582 break; 583 default: 584 break; 585 } 586 if (ostate != IEEE80211_S_INIT) { 587 /* NB: optimize INIT -> INIT case */ 588 ieee80211_reset_bss(vap); 589 ieee80211_mesh_rt_flush(vap); 590 } 591 break; 592 case IEEE80211_S_SCAN: 593 switch (ostate) { 594 case IEEE80211_S_INIT: 595 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 596 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 597 ms->ms_idlen != 0) { 598 /* 599 * Already have a channel and a mesh ID; bypass 600 * the scan and startup immediately. 601 */ 602 ieee80211_create_ibss(vap, vap->iv_des_chan); 603 break; 604 } 605 /* 606 * Initiate a scan. We can come here as a result 607 * of an IEEE80211_IOC_SCAN_REQ too in which case 608 * the vap will be marked with IEEE80211_FEXT_SCANREQ 609 * and the scan request parameters will be present 610 * in iv_scanreq. Otherwise we do the default. 611 */ 612 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 613 ieee80211_check_scan(vap, 614 vap->iv_scanreq_flags, 615 vap->iv_scanreq_duration, 616 vap->iv_scanreq_mindwell, 617 vap->iv_scanreq_maxdwell, 618 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 619 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 620 } else 621 ieee80211_check_scan_current(vap); 622 break; 623 default: 624 break; 625 } 626 break; 627 case IEEE80211_S_CAC: 628 /* 629 * Start CAC on a DFS channel. We come here when starting 630 * a bss on a DFS channel (see ieee80211_create_ibss). 631 */ 632 ieee80211_dfs_cac_start(vap); 633 break; 634 case IEEE80211_S_RUN: 635 switch (ostate) { 636 case IEEE80211_S_INIT: 637 /* 638 * Already have a channel; bypass the 639 * scan and startup immediately. 640 * Note that ieee80211_create_ibss will call 641 * back to do a RUN->RUN state change. 642 */ 643 ieee80211_create_ibss(vap, 644 ieee80211_ht_adjust_channel(ic, 645 ic->ic_curchan, vap->iv_flags_ht)); 646 /* NB: iv_bss is changed on return */ 647 break; 648 case IEEE80211_S_CAC: 649 /* 650 * NB: This is the normal state change when CAC 651 * expires and no radar was detected; no need to 652 * clear the CAC timer as it's already expired. 653 */ 654 /* fall thru... */ 655 case IEEE80211_S_CSA: 656#if 0 657 /* 658 * Shorten inactivity timer of associated stations 659 * to weed out sta's that don't follow a CSA. 660 */ 661 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 662#endif 663 /* 664 * Update bss node channel to reflect where 665 * we landed after CSA. 666 */ 667 ieee80211_node_set_chan(vap->iv_bss, 668 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 669 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 670 /* XXX bypass debug msgs */ 671 break; 672 case IEEE80211_S_SCAN: 673 case IEEE80211_S_RUN: 674#ifdef IEEE80211_DEBUG 675 if (ieee80211_msg_debug(vap)) { 676 struct ieee80211_node *ni = vap->iv_bss; 677 ieee80211_note(vap, 678 "synchronized with %s meshid ", 679 ether_sprintf(ni->ni_meshid)); 680 ieee80211_print_essid(ni->ni_meshid, 681 ni->ni_meshidlen); 682 /* XXX MCS/HT */ 683 printf(" channel %d\n", 684 ieee80211_chan2ieee(ic, ic->ic_curchan)); 685 } 686#endif 687 break; 688 default: 689 break; 690 } 691 ieee80211_node_authorize(vap->iv_bss); 692 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 693 mesh_rt_cleanup_cb, vap); 694 break; 695 default: 696 break; 697 } 698 /* NB: ostate not nstate */ 699 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 700 return 0; 701} 702 703static void 704mesh_rt_cleanup_cb(void *arg) 705{ 706 struct ieee80211vap *vap = arg; 707 struct ieee80211_mesh_state *ms = vap->iv_mesh; 708 709 mesh_rt_flush_invalid(vap); 710 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 711 mesh_rt_cleanup_cb, vap); 712} 713 714 715/* 716 * Helper function to note the Mesh Peer Link FSM change. 717 */ 718static void 719mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 720{ 721 struct ieee80211vap *vap = ni->ni_vap; 722 struct ieee80211_mesh_state *ms = vap->iv_mesh; 723#ifdef IEEE80211_DEBUG 724 static const char *meshlinkstates[] = { 725 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 726 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 727 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 728 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 729 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 730 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 731 }; 732#endif 733 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 734 ni, "peer link: %s -> %s", 735 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 736 737 /* track neighbor count */ 738 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 739 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 740 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 741 ms->ms_neighbors++; 742 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 743 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 744 state != IEEE80211_NODE_MESH_ESTABLISHED) { 745 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 746 ms->ms_neighbors--; 747 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 748 } 749 ni->ni_mlstate = state; 750 switch (state) { 751 case IEEE80211_NODE_MESH_HOLDING: 752 ms->ms_ppath->mpp_peerdown(ni); 753 break; 754 case IEEE80211_NODE_MESH_ESTABLISHED: 755 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 756 break; 757 default: 758 break; 759 } 760} 761 762/* 763 * Helper function to generate a unique local ID required for mesh 764 * peer establishment. 765 */ 766static void 767mesh_checkid(void *arg, struct ieee80211_node *ni) 768{ 769 uint16_t *r = arg; 770 771 if (*r == ni->ni_mllid) 772 *(uint16_t *)arg = 0; 773} 774 775static uint32_t 776mesh_generateid(struct ieee80211vap *vap) 777{ 778 int maxiter = 4; 779 uint16_t r; 780 781 do { 782 get_random_bytes(&r, 2); 783 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 784 maxiter--; 785 } while (r == 0 && maxiter > 0); 786 return r; 787} 788 789/* 790 * Verifies if we already received this packet by checking its 791 * sequence number. 792 * Returns 0 if the frame is to be accepted, 1 otherwise. 793 */ 794static int 795mesh_checkpseq(struct ieee80211vap *vap, 796 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 797{ 798 struct ieee80211_mesh_route *rt; 799 800 rt = ieee80211_mesh_rt_find(vap, source); 801 if (rt == NULL) { 802 rt = ieee80211_mesh_rt_add(vap, source); 803 if (rt == NULL) { 804 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 805 "%s", "add mcast route failed"); 806 vap->iv_stats.is_mesh_rtaddfailed++; 807 return 1; 808 } 809 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 810 "add mcast route, mesh seqno %d", seq); 811 rt->rt_lastmseq = seq; 812 return 0; 813 } 814 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 815 return 1; 816 } else { 817 rt->rt_lastmseq = seq; 818 return 0; 819 } 820} 821 822/* 823 * Iterate the routing table and locate the next hop. 824 */ 825static struct ieee80211_node * 826mesh_find_txnode(struct ieee80211vap *vap, 827 const uint8_t dest[IEEE80211_ADDR_LEN]) 828{ 829 struct ieee80211_mesh_route *rt; 830 831 rt = ieee80211_mesh_rt_find(vap, dest); 832 if (rt == NULL) 833 return NULL; 834 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 835 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 836 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 837 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 838 /* XXX stat */ 839 return NULL; 840 } 841 return ieee80211_find_txnode(vap, rt->rt_nexthop); 842} 843 844/* 845 * Forward the specified frame. 846 * Decrement the TTL and set TA to our MAC address. 847 */ 848static void 849mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 850 const struct ieee80211_meshcntl *mc) 851{ 852 struct ieee80211com *ic = vap->iv_ic; 853 struct ieee80211_mesh_state *ms = vap->iv_mesh; 854 struct ifnet *ifp = vap->iv_ifp; 855 struct ifnet *parent = ic->ic_ifp; 856 const struct ieee80211_frame *wh = 857 mtod(m, const struct ieee80211_frame *); 858 struct mbuf *mcopy; 859 struct ieee80211_meshcntl *mccopy; 860 struct ieee80211_frame *whcopy; 861 struct ieee80211_node *ni; 862 int err; 863 864 if (mc->mc_ttl == 0) { 865 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 866 "%s", "frame not fwd'd, ttl 0"); 867 vap->iv_stats.is_mesh_fwd_ttl++; 868 return; 869 } 870 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 871 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 872 "%s", "frame not fwd'd, fwding disabled"); 873 vap->iv_stats.is_mesh_fwd_disabled++; 874 return; 875 } 876 mcopy = m_dup(m, M_DONTWAIT); 877 if (mcopy == NULL) { 878 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 879 "%s", "frame not fwd'd, cannot dup"); 880 vap->iv_stats.is_mesh_fwd_nobuf++; 881 ifp->if_oerrors++; 882 return; 883 } 884 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 885 sizeof(struct ieee80211_meshcntl)); 886 if (mcopy == NULL) { 887 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 888 "%s", "frame not fwd'd, too short"); 889 vap->iv_stats.is_mesh_fwd_tooshort++; 890 ifp->if_oerrors++; 891 m_freem(mcopy); 892 return; 893 } 894 whcopy = mtod(mcopy, struct ieee80211_frame *); 895 mccopy = (struct ieee80211_meshcntl *) 896 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 897 /* XXX clear other bits? */ 898 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 899 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 900 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 901 ni = ieee80211_ref_node(vap->iv_bss); 902 mcopy->m_flags |= M_MCAST; 903 } else { 904 ni = mesh_find_txnode(vap, whcopy->i_addr3); 905 if (ni == NULL) { 906 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 907 "%s", "frame not fwd'd, no path"); 908 vap->iv_stats.is_mesh_fwd_nopath++; 909 m_freem(mcopy); 910 return; 911 } 912 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 913 } 914 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 915 mccopy->mc_ttl--; 916 917 /* XXX calculate priority so drivers can find the tx queue */ 918 M_WME_SETAC(mcopy, WME_AC_BE); 919 920 /* XXX do we know m_nextpkt is NULL? */ 921 mcopy->m_pkthdr.rcvif = (void *) ni; 922 err = parent->if_transmit(parent, mcopy); 923 if (err != 0) { 924 /* NB: IFQ_HANDOFF reclaims mbuf */ 925 ieee80211_free_node(ni); 926 } else { 927 ifp->if_opackets++; 928 } 929} 930 931static struct mbuf * 932mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 933{ 934#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 935 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 936 sizeof(struct ieee80211_meshcntl_ae11)]; 937 const struct ieee80211_qosframe_addr4 *wh; 938 const struct ieee80211_meshcntl_ae10 *mc; 939 struct ether_header *eh; 940 struct llc *llc; 941 int ae; 942 943 if (m->m_len < hdrlen + sizeof(*llc) && 944 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 945 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 946 "discard data frame: %s", "m_pullup failed"); 947 vap->iv_stats.is_rx_tooshort++; 948 return NULL; 949 } 950 memcpy(b, mtod(m, caddr_t), hdrlen); 951 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 952 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 953 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 954 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 955 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 956 957 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 958 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 959 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 960 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 961 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 962 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 963 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 964 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 965 llc = NULL; 966 } else { 967 m_adj(m, hdrlen - sizeof(*eh)); 968 } 969 eh = mtod(m, struct ether_header *); 970 ae = mc->mc_flags & 3; 971 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 972 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 973 if (ae == 0) { 974 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 975 } else if (ae == 1) { 976 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 977 } else { 978 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 979 (const struct ieee80211_frame *)wh, NULL, 980 "bad AE %d", ae); 981 vap->iv_stats.is_mesh_badae++; 982 m_freem(m); 983 return NULL; 984 } 985 } else { 986 if (ae == 0) { 987 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 988 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 989 } else if (ae == 2) { 990 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 991 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 992 } else { 993 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 994 (const struct ieee80211_frame *)wh, NULL, 995 "bad AE %d", ae); 996 vap->iv_stats.is_mesh_badae++; 997 m_freem(m); 998 return NULL; 999 } 1000 } 1001#ifdef ALIGNED_POINTER 1002 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 1003 m = ieee80211_realign(vap, m, sizeof(*eh)); 1004 if (m == NULL) 1005 return NULL; 1006 } 1007#endif /* ALIGNED_POINTER */ 1008 if (llc != NULL) { 1009 eh = mtod(m, struct ether_header *); 1010 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 1011 } 1012 return m; 1013#undef WDIR 1014} 1015 1016/* 1017 * Return non-zero if the unicast mesh data frame should be processed 1018 * locally. Frames that are not proxy'd have our address, otherwise 1019 * we need to consult the routing table to look for a proxy entry. 1020 */ 1021static __inline int 1022mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 1023 const struct ieee80211_meshcntl *mc) 1024{ 1025 int ae = mc->mc_flags & 3; 1026 1027 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1028 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1029 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1030 if (ae == 2) { /* ucast w/ proxy */ 1031 const struct ieee80211_meshcntl_ae10 *mc10 = 1032 (const struct ieee80211_meshcntl_ae10 *) mc; 1033 struct ieee80211_mesh_route *rt = 1034 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1035 /* check for proxy route to ourself */ 1036 return (rt != NULL && 1037 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1038 } else /* ucast w/o proxy */ 1039 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1040} 1041 1042static int 1043mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1044{ 1045#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1046#define HAS_SEQ(type) ((type & 0x4) == 0) 1047 struct ieee80211vap *vap = ni->ni_vap; 1048 struct ieee80211com *ic = ni->ni_ic; 1049 struct ifnet *ifp = vap->iv_ifp; 1050 struct ieee80211_frame *wh; 1051 const struct ieee80211_meshcntl *mc; 1052 int hdrspace, meshdrlen, need_tap; 1053 uint8_t dir, type, subtype, qos; 1054 uint32_t seq; 1055 uint8_t *addr; 1056 ieee80211_seq rxseq; 1057 1058 KASSERT(ni != NULL, ("null node")); 1059 ni->ni_inact = ni->ni_inact_reload; 1060 1061 need_tap = 1; /* mbuf need to be tapped. */ 1062 type = -1; /* undefined */ 1063 1064 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1065 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1066 ni->ni_macaddr, NULL, 1067 "too short (1): len %u", m->m_pkthdr.len); 1068 vap->iv_stats.is_rx_tooshort++; 1069 goto out; 1070 } 1071 /* 1072 * Bit of a cheat here, we use a pointer for a 3-address 1073 * frame format but don't reference fields past outside 1074 * ieee80211_frame_min w/o first validating the data is 1075 * present. 1076 */ 1077 wh = mtod(m, struct ieee80211_frame *); 1078 1079 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1080 IEEE80211_FC0_VERSION_0) { 1081 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1082 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1083 vap->iv_stats.is_rx_badversion++; 1084 goto err; 1085 } 1086 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1087 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1088 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1089 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1090 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1091 ni->ni_noise = nf; 1092 if (HAS_SEQ(type)) { 1093 uint8_t tid = ieee80211_gettid(wh); 1094 1095 if (IEEE80211_QOS_HAS_SEQ(wh) && 1096 TID_TO_WME_AC(tid) >= WME_AC_VI) 1097 ic->ic_wme.wme_hipri_traffic++; 1098 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1099 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1100 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1101 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1102 /* duplicate, discard */ 1103 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1104 wh->i_addr1, "duplicate", 1105 "seqno <%u,%u> fragno <%u,%u> tid %u", 1106 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1107 ni->ni_rxseqs[tid] >> 1108 IEEE80211_SEQ_SEQ_SHIFT, 1109 rxseq & IEEE80211_SEQ_FRAG_MASK, 1110 ni->ni_rxseqs[tid] & 1111 IEEE80211_SEQ_FRAG_MASK, 1112 tid); 1113 vap->iv_stats.is_rx_dup++; 1114 IEEE80211_NODE_STAT(ni, rx_dup); 1115 goto out; 1116 } 1117 ni->ni_rxseqs[tid] = rxseq; 1118 } 1119 } 1120#ifdef IEEE80211_DEBUG 1121 /* 1122 * It's easier, but too expensive, to simulate different mesh 1123 * topologies by consulting the ACL policy very early, so do this 1124 * only under DEBUG. 1125 * 1126 * NB: this check is also done upon peering link initiation. 1127 */ 1128 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1129 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1130 wh, NULL, "%s", "disallowed by ACL"); 1131 vap->iv_stats.is_rx_acl++; 1132 goto out; 1133 } 1134#endif 1135 switch (type) { 1136 case IEEE80211_FC0_TYPE_DATA: 1137 if (ni == vap->iv_bss) 1138 goto out; 1139 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1140 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1141 ni->ni_macaddr, NULL, 1142 "peer link not yet established (%d)", 1143 ni->ni_mlstate); 1144 vap->iv_stats.is_mesh_nolink++; 1145 goto out; 1146 } 1147 if (dir != IEEE80211_FC1_DIR_FROMDS && 1148 dir != IEEE80211_FC1_DIR_DSTODS) { 1149 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1150 wh, "data", "incorrect dir 0x%x", dir); 1151 vap->iv_stats.is_rx_wrongdir++; 1152 goto err; 1153 } 1154 /* pull up enough to get to the mesh control */ 1155 hdrspace = ieee80211_hdrspace(ic, wh); 1156 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1157 (m = m_pullup(m, hdrspace + 1158 sizeof(struct ieee80211_meshcntl))) == NULL) { 1159 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1160 ni->ni_macaddr, NULL, 1161 "data too short: expecting %u", hdrspace); 1162 vap->iv_stats.is_rx_tooshort++; 1163 goto out; /* XXX */ 1164 } 1165 /* 1166 * Now calculate the full extent of the headers. Note 1167 * mesh_decap will pull up anything we didn't get 1168 * above when it strips the 802.11 headers. 1169 */ 1170 mc = (const struct ieee80211_meshcntl *) 1171 (mtod(m, const uint8_t *) + hdrspace); 1172 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1173 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1174 hdrspace += meshdrlen; 1175 seq = LE_READ_4(mc->mc_seq); 1176 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1177 addr = wh->i_addr3; 1178 else 1179 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1180 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1181 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1182 addr, "data", "%s", "not to me"); 1183 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1184 goto out; 1185 } 1186 if (mesh_checkpseq(vap, addr, seq) != 0) { 1187 vap->iv_stats.is_rx_dup++; 1188 goto out; 1189 } 1190 1191 /* 1192 * Potentially forward packet. See table s36 (p140) 1193 * for the rules. XXX tap fwd'd packets not for us? 1194 */ 1195 if (dir == IEEE80211_FC1_DIR_FROMDS || 1196 !mesh_isucastforme(vap, wh, mc)) { 1197 mesh_forward(vap, m, mc); 1198 if (dir == IEEE80211_FC1_DIR_DSTODS) 1199 goto out; 1200 /* NB: fall thru to deliver mcast frames locally */ 1201 } 1202 1203 /* 1204 * Save QoS bits for use below--before we strip the header. 1205 */ 1206 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1207 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1208 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1209 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1210 } else 1211 qos = 0; 1212 /* 1213 * Next up, any fragmentation. 1214 */ 1215 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1216 m = ieee80211_defrag(ni, m, hdrspace); 1217 if (m == NULL) { 1218 /* Fragment dropped or frame not complete yet */ 1219 goto out; 1220 } 1221 } 1222 wh = NULL; /* no longer valid, catch any uses */ 1223 1224 if (ieee80211_radiotap_active_vap(vap)) 1225 ieee80211_radiotap_rx(vap, m); 1226 need_tap = 0; 1227 1228 /* 1229 * Finally, strip the 802.11 header. 1230 */ 1231 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1232 if (m == NULL) { 1233 /* XXX mask bit to check for both */ 1234 /* don't count Null data frames as errors */ 1235 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1236 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1237 goto out; 1238 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1239 ni->ni_macaddr, "data", "%s", "decap error"); 1240 vap->iv_stats.is_rx_decap++; 1241 IEEE80211_NODE_STAT(ni, rx_decap); 1242 goto err; 1243 } 1244 if (qos & IEEE80211_QOS_AMSDU) { 1245 m = ieee80211_decap_amsdu(ni, m); 1246 if (m == NULL) 1247 return IEEE80211_FC0_TYPE_DATA; 1248 } 1249 ieee80211_deliver_data(vap, ni, m); 1250 return type; 1251 case IEEE80211_FC0_TYPE_MGT: 1252 vap->iv_stats.is_rx_mgmt++; 1253 IEEE80211_NODE_STAT(ni, rx_mgmt); 1254 if (dir != IEEE80211_FC1_DIR_NODS) { 1255 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1256 wh, "mgt", "incorrect dir 0x%x", dir); 1257 vap->iv_stats.is_rx_wrongdir++; 1258 goto err; 1259 } 1260 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1261 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1262 ni->ni_macaddr, "mgt", "too short: len %u", 1263 m->m_pkthdr.len); 1264 vap->iv_stats.is_rx_tooshort++; 1265 goto out; 1266 } 1267#ifdef IEEE80211_DEBUG 1268 if ((ieee80211_msg_debug(vap) && 1269 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1270 ieee80211_msg_dumppkts(vap)) { 1271 if_printf(ifp, "received %s from %s rssi %d\n", 1272 ieee80211_mgt_subtype_name[subtype >> 1273 IEEE80211_FC0_SUBTYPE_SHIFT], 1274 ether_sprintf(wh->i_addr2), rssi); 1275 } 1276#endif 1277 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1278 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1279 wh, NULL, "%s", "WEP set but not permitted"); 1280 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1281 goto out; 1282 } 1283 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1284 goto out; 1285 case IEEE80211_FC0_TYPE_CTL: 1286 vap->iv_stats.is_rx_ctl++; 1287 IEEE80211_NODE_STAT(ni, rx_ctrl); 1288 goto out; 1289 default: 1290 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1291 wh, "bad", "frame type 0x%x", type); 1292 /* should not come here */ 1293 break; 1294 } 1295err: 1296 ifp->if_ierrors++; 1297out: 1298 if (m != NULL) { 1299 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1300 ieee80211_radiotap_rx(vap, m); 1301 m_freem(m); 1302 } 1303 return type; 1304} 1305 1306static void 1307mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1308 int rssi, int nf) 1309{ 1310 struct ieee80211vap *vap = ni->ni_vap; 1311 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1312 struct ieee80211com *ic = ni->ni_ic; 1313 struct ieee80211_frame *wh; 1314 uint8_t *frm, *efrm; 1315 1316 wh = mtod(m0, struct ieee80211_frame *); 1317 frm = (uint8_t *)&wh[1]; 1318 efrm = mtod(m0, uint8_t *) + m0->m_len; 1319 switch (subtype) { 1320 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1321 case IEEE80211_FC0_SUBTYPE_BEACON: 1322 { 1323 struct ieee80211_scanparams scan; 1324 /* 1325 * We process beacon/probe response 1326 * frames to discover neighbors. 1327 */ 1328 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1329 return; 1330 /* 1331 * Count frame now that we know it's to be processed. 1332 */ 1333 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1334 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1335 IEEE80211_NODE_STAT(ni, rx_beacons); 1336 } else 1337 IEEE80211_NODE_STAT(ni, rx_proberesp); 1338 /* 1339 * If scanning, just pass information to the scan module. 1340 */ 1341 if (ic->ic_flags & IEEE80211_F_SCAN) { 1342 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1343 /* 1344 * Actively scanning a channel marked passive; 1345 * send a probe request now that we know there 1346 * is 802.11 traffic present. 1347 * 1348 * XXX check if the beacon we recv'd gives 1349 * us what we need and suppress the probe req 1350 */ 1351 ieee80211_probe_curchan(vap, 1); 1352 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1353 } 1354 ieee80211_add_scan(vap, &scan, wh, 1355 subtype, rssi, nf); 1356 return; 1357 } 1358 1359 /* The rest of this code assumes we are running */ 1360 if (vap->iv_state != IEEE80211_S_RUN) 1361 return; 1362 /* 1363 * Ignore non-mesh STAs. 1364 */ 1365 if ((scan.capinfo & 1366 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1367 scan.meshid == NULL || scan.meshconf == NULL) { 1368 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1369 wh, "beacon", "%s", "not a mesh sta"); 1370 vap->iv_stats.is_mesh_wrongmesh++; 1371 return; 1372 } 1373 /* 1374 * Ignore STAs for other mesh networks. 1375 */ 1376 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1377 mesh_verify_meshconf(vap, scan.meshconf)) { 1378 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1379 wh, "beacon", "%s", "not for our mesh"); 1380 vap->iv_stats.is_mesh_wrongmesh++; 1381 return; 1382 } 1383 /* 1384 * Peer only based on the current ACL policy. 1385 */ 1386 if (vap->iv_acl != NULL && 1387 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1388 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1389 wh, NULL, "%s", "disallowed by ACL"); 1390 vap->iv_stats.is_rx_acl++; 1391 return; 1392 } 1393 /* 1394 * Do neighbor discovery. 1395 */ 1396 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1397 /* 1398 * Create a new entry in the neighbor table. 1399 */ 1400 ni = ieee80211_add_neighbor(vap, wh, &scan); 1401 } 1402 /* 1403 * Automatically peer with discovered nodes if possible. 1404 * XXX backoff on repeated failure 1405 */ 1406 if (ni != vap->iv_bss && 1407 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1408 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1409 uint16_t args[1]; 1410 1411 ni->ni_mlpid = mesh_generateid(vap); 1412 if (ni->ni_mlpid == 0) 1413 return; 1414 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1415 args[0] = ni->ni_mlpid; 1416 ieee80211_send_action(ni, 1417 IEEE80211_ACTION_CAT_MESHPEERING, 1418 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1419 ni->ni_mlrcnt = 0; 1420 mesh_peer_timeout_setup(ni); 1421 } 1422 break; 1423 } 1424 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1425 { 1426 uint8_t *ssid, *meshid, *rates, *xrates; 1427 uint8_t *sfrm; 1428 1429 if (vap->iv_state != IEEE80211_S_RUN) { 1430 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1431 wh, NULL, "wrong state %s", 1432 ieee80211_state_name[vap->iv_state]); 1433 vap->iv_stats.is_rx_mgtdiscard++; 1434 return; 1435 } 1436 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1437 /* frame must be directed */ 1438 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1439 wh, NULL, "%s", "not unicast"); 1440 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1441 return; 1442 } 1443 /* 1444 * prreq frame format 1445 * [tlv] ssid 1446 * [tlv] supported rates 1447 * [tlv] extended supported rates 1448 * [tlv] mesh id 1449 */ 1450 ssid = meshid = rates = xrates = NULL; 1451 sfrm = frm; 1452 while (efrm - frm > 1) { 1453 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1454 switch (*frm) { 1455 case IEEE80211_ELEMID_SSID: 1456 ssid = frm; 1457 break; 1458 case IEEE80211_ELEMID_RATES: 1459 rates = frm; 1460 break; 1461 case IEEE80211_ELEMID_XRATES: 1462 xrates = frm; 1463 break; 1464 case IEEE80211_ELEMID_MESHID: 1465 meshid = frm; 1466 break; 1467 } 1468 frm += frm[2] + 2; 1469 } 1470 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1471 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1472 if (xrates != NULL) 1473 IEEE80211_VERIFY_ELEMENT(xrates, 1474 IEEE80211_RATE_MAXSIZE - rates[1], return); 1475 if (meshid != NULL) 1476 IEEE80211_VERIFY_ELEMENT(meshid, 1477 IEEE80211_MESHID_LEN, return); 1478 /* NB: meshid, not ssid */ 1479 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1480 1481 /* XXX find a better class or define it's own */ 1482 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1483 "%s", "recv probe req"); 1484 /* 1485 * Some legacy 11b clients cannot hack a complete 1486 * probe response frame. When the request includes 1487 * only a bare-bones rate set, communicate this to 1488 * the transmit side. 1489 */ 1490 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1491 break; 1492 } 1493 case IEEE80211_FC0_SUBTYPE_ACTION: 1494 if (vap->iv_state != IEEE80211_S_RUN) { 1495 vap->iv_stats.is_rx_mgtdiscard++; 1496 break; 1497 } 1498 /* 1499 * We received an action for an unknown neighbor. 1500 * XXX: wait for it to beacon or create ieee80211_node? 1501 */ 1502 if (ni == vap->iv_bss) { 1503 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1504 wh, NULL, "%s", "unknown node"); 1505 vap->iv_stats.is_rx_mgtdiscard++; 1506 break; 1507 } 1508 /* 1509 * Discard if not for us. 1510 */ 1511 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1512 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1513 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1514 wh, NULL, "%s", "not for me"); 1515 vap->iv_stats.is_rx_mgtdiscard++; 1516 break; 1517 } 1518 /* XXX parse_action is a bit useless now */ 1519 if (ieee80211_parse_action(ni, m0) == 0) 1520 ic->ic_recv_action(ni, wh, frm, efrm); 1521 break; 1522 case IEEE80211_FC0_SUBTYPE_AUTH: 1523 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1524 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1525 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1526 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1527 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1528 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1529 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1530 wh, NULL, "%s", "not handled"); 1531 vap->iv_stats.is_rx_mgtdiscard++; 1532 return; 1533 default: 1534 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1535 wh, "mgt", "subtype 0x%x not handled", subtype); 1536 vap->iv_stats.is_rx_badsubtype++; 1537 break; 1538 } 1539} 1540 1541/* 1542 * Parse meshpeering action ie's for open+confirm frames; the 1543 * important bits are returned in the supplied structure. 1544 */ 1545static const struct ieee80211_meshpeer_ie * 1546mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1547 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1548 const uint8_t *frm, const uint8_t *efrm, 1549 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1550{ 1551 struct ieee80211vap *vap = ni->ni_vap; 1552 const struct ieee80211_meshpeer_ie *mpie; 1553 const uint8_t *meshid, *meshconf, *meshpeer; 1554 1555 meshid = meshconf = meshpeer = NULL; 1556 while (efrm - frm > 1) { 1557 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1558 switch (*frm) { 1559 case IEEE80211_ELEMID_MESHID: 1560 meshid = frm; 1561 break; 1562 case IEEE80211_ELEMID_MESHCONF: 1563 meshconf = frm; 1564 break; 1565 case IEEE80211_ELEMID_MESHPEER: 1566 meshpeer = frm; 1567 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1568 memset(mp, 0, sizeof(*mp)); 1569 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1570 /* NB: peer link ID is optional on these frames */ 1571 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1572 mpie->peer_len == 8) { 1573 mp->peer_linkid = 0; 1574 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1575 } else { 1576 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1577 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1578 } 1579 break; 1580 } 1581 frm += frm[1] + 2; 1582 } 1583 1584 /* 1585 * Verify the contents of the frame. Action frames with 1586 * close subtype don't have a Mesh Configuration IE. 1587 * If if fails validation, close the peer link. 1588 */ 1589 KASSERT(meshpeer != NULL && 1590 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1591 ("parsing close action")); 1592 1593 if (mesh_verify_meshid(vap, meshid) || 1594 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1595 mesh_verify_meshconf(vap, meshconf)) { 1596 uint16_t args[3]; 1597 1598 IEEE80211_DISCARD(vap, 1599 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1600 wh, NULL, "%s", "not for our mesh"); 1601 vap->iv_stats.is_rx_mgtdiscard++; 1602 switch (ni->ni_mlstate) { 1603 case IEEE80211_NODE_MESH_IDLE: 1604 case IEEE80211_NODE_MESH_ESTABLISHED: 1605 case IEEE80211_NODE_MESH_HOLDING: 1606 /* ignore */ 1607 break; 1608 case IEEE80211_NODE_MESH_OPENSNT: 1609 case IEEE80211_NODE_MESH_OPENRCV: 1610 case IEEE80211_NODE_MESH_CONFIRMRCV: 1611 args[0] = ni->ni_mlpid; 1612 args[1] = ni->ni_mllid; 1613 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1614 ieee80211_send_action(ni, 1615 IEEE80211_ACTION_CAT_MESHPEERING, 1616 IEEE80211_ACTION_MESHPEERING_CLOSE, 1617 args); 1618 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1619 mesh_peer_timeout_setup(ni); 1620 break; 1621 } 1622 return NULL; 1623 } 1624 return (const struct ieee80211_meshpeer_ie *) mp; 1625} 1626 1627static int 1628mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1629 const struct ieee80211_frame *wh, 1630 const uint8_t *frm, const uint8_t *efrm) 1631{ 1632 struct ieee80211vap *vap = ni->ni_vap; 1633 struct ieee80211_meshpeer_ie ie; 1634 const struct ieee80211_meshpeer_ie *meshpeer; 1635 uint16_t args[3]; 1636 1637 /* +2+2 for action + code + capabilites */ 1638 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1639 IEEE80211_ACTION_MESHPEERING_OPEN); 1640 if (meshpeer == NULL) { 1641 return 0; 1642 } 1643 1644 /* XXX move up */ 1645 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1646 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1647 1648 switch (ni->ni_mlstate) { 1649 case IEEE80211_NODE_MESH_IDLE: 1650 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1651 ni->ni_mllid = meshpeer->peer_llinkid; 1652 ni->ni_mlpid = mesh_generateid(vap); 1653 if (ni->ni_mlpid == 0) 1654 return 0; /* XXX */ 1655 args[0] = ni->ni_mlpid; 1656 /* Announce we're open too... */ 1657 ieee80211_send_action(ni, 1658 IEEE80211_ACTION_CAT_MESHPEERING, 1659 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1660 /* ...and confirm the link. */ 1661 args[0] = ni->ni_mlpid; 1662 args[1] = ni->ni_mllid; 1663 ieee80211_send_action(ni, 1664 IEEE80211_ACTION_CAT_MESHPEERING, 1665 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1666 args); 1667 mesh_peer_timeout_setup(ni); 1668 break; 1669 case IEEE80211_NODE_MESH_OPENRCV: 1670 /* Wrong Link ID */ 1671 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1672 args[0] = ni->ni_mllid; 1673 args[1] = ni->ni_mlpid; 1674 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1675 ieee80211_send_action(ni, 1676 IEEE80211_ACTION_CAT_MESHPEERING, 1677 IEEE80211_ACTION_MESHPEERING_CLOSE, 1678 args); 1679 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1680 mesh_peer_timeout_setup(ni); 1681 break; 1682 } 1683 /* Duplicate open, confirm again. */ 1684 args[0] = ni->ni_mlpid; 1685 args[1] = ni->ni_mllid; 1686 ieee80211_send_action(ni, 1687 IEEE80211_ACTION_CAT_MESHPEERING, 1688 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1689 args); 1690 break; 1691 case IEEE80211_NODE_MESH_OPENSNT: 1692 ni->ni_mllid = meshpeer->peer_llinkid; 1693 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1694 args[0] = ni->ni_mlpid; 1695 args[1] = ni->ni_mllid; 1696 ieee80211_send_action(ni, 1697 IEEE80211_ACTION_CAT_MESHPEERING, 1698 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1699 args); 1700 /* NB: don't setup/clear any timeout */ 1701 break; 1702 case IEEE80211_NODE_MESH_CONFIRMRCV: 1703 if (ni->ni_mlpid != meshpeer->peer_linkid || 1704 ni->ni_mllid != meshpeer->peer_llinkid) { 1705 args[0] = ni->ni_mlpid; 1706 args[1] = ni->ni_mllid; 1707 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1708 ieee80211_send_action(ni, 1709 IEEE80211_ACTION_CAT_MESHPEERING, 1710 IEEE80211_ACTION_MESHPEERING_CLOSE, 1711 args); 1712 mesh_linkchange(ni, 1713 IEEE80211_NODE_MESH_HOLDING); 1714 mesh_peer_timeout_setup(ni); 1715 break; 1716 } 1717 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1718 ni->ni_mllid = meshpeer->peer_llinkid; 1719 args[0] = ni->ni_mlpid; 1720 args[1] = ni->ni_mllid; 1721 ieee80211_send_action(ni, 1722 IEEE80211_ACTION_CAT_MESHPEERING, 1723 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1724 args); 1725 mesh_peer_timeout_stop(ni); 1726 break; 1727 case IEEE80211_NODE_MESH_ESTABLISHED: 1728 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1729 args[0] = ni->ni_mllid; 1730 args[1] = ni->ni_mlpid; 1731 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1732 ieee80211_send_action(ni, 1733 IEEE80211_ACTION_CAT_MESHPEERING, 1734 IEEE80211_ACTION_MESHPEERING_CLOSE, 1735 args); 1736 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1737 mesh_peer_timeout_setup(ni); 1738 break; 1739 } 1740 args[0] = ni->ni_mlpid; 1741 args[1] = ni->ni_mllid; 1742 ieee80211_send_action(ni, 1743 IEEE80211_ACTION_CAT_MESHPEERING, 1744 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1745 args); 1746 break; 1747 case IEEE80211_NODE_MESH_HOLDING: 1748 args[0] = ni->ni_mlpid; 1749 args[1] = meshpeer->peer_llinkid; 1750 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1751 ieee80211_send_action(ni, 1752 IEEE80211_ACTION_CAT_MESHPEERING, 1753 IEEE80211_ACTION_MESHPEERING_CLOSE, 1754 args); 1755 break; 1756 } 1757 return 0; 1758} 1759 1760static int 1761mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1762 const struct ieee80211_frame *wh, 1763 const uint8_t *frm, const uint8_t *efrm) 1764{ 1765 struct ieee80211vap *vap = ni->ni_vap; 1766 struct ieee80211_meshpeer_ie ie; 1767 const struct ieee80211_meshpeer_ie *meshpeer; 1768 uint16_t args[3]; 1769 1770 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1771 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1772 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1773 if (meshpeer == NULL) { 1774 return 0; 1775 } 1776 1777 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1778 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1779 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1780 1781 switch (ni->ni_mlstate) { 1782 case IEEE80211_NODE_MESH_OPENRCV: 1783 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1784 mesh_peer_timeout_stop(ni); 1785 break; 1786 case IEEE80211_NODE_MESH_OPENSNT: 1787 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1788 break; 1789 case IEEE80211_NODE_MESH_HOLDING: 1790 args[0] = ni->ni_mlpid; 1791 args[1] = meshpeer->peer_llinkid; 1792 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1793 ieee80211_send_action(ni, 1794 IEEE80211_ACTION_CAT_MESHPEERING, 1795 IEEE80211_ACTION_MESHPEERING_CLOSE, 1796 args); 1797 break; 1798 case IEEE80211_NODE_MESH_CONFIRMRCV: 1799 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1800 args[0] = ni->ni_mlpid; 1801 args[1] = ni->ni_mllid; 1802 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1803 ieee80211_send_action(ni, 1804 IEEE80211_ACTION_CAT_MESHPEERING, 1805 IEEE80211_ACTION_MESHPEERING_CLOSE, 1806 args); 1807 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1808 mesh_peer_timeout_setup(ni); 1809 } 1810 break; 1811 default: 1812 IEEE80211_DISCARD(vap, 1813 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1814 wh, NULL, "received confirm in invalid state %d", 1815 ni->ni_mlstate); 1816 vap->iv_stats.is_rx_mgtdiscard++; 1817 break; 1818 } 1819 return 0; 1820} 1821 1822static int 1823mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1824 const struct ieee80211_frame *wh, 1825 const uint8_t *frm, const uint8_t *efrm) 1826{ 1827 uint16_t args[3]; 1828 1829 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1830 ni, "%s", "recv PEER CLOSE"); 1831 1832 switch (ni->ni_mlstate) { 1833 case IEEE80211_NODE_MESH_IDLE: 1834 /* ignore */ 1835 break; 1836 case IEEE80211_NODE_MESH_OPENRCV: 1837 case IEEE80211_NODE_MESH_OPENSNT: 1838 case IEEE80211_NODE_MESH_CONFIRMRCV: 1839 case IEEE80211_NODE_MESH_ESTABLISHED: 1840 args[0] = ni->ni_mlpid; 1841 args[1] = ni->ni_mllid; 1842 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1843 ieee80211_send_action(ni, 1844 IEEE80211_ACTION_CAT_MESHPEERING, 1845 IEEE80211_ACTION_MESHPEERING_CLOSE, 1846 args); 1847 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1848 mesh_peer_timeout_setup(ni); 1849 break; 1850 case IEEE80211_NODE_MESH_HOLDING: 1851 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1852 mesh_peer_timeout_setup(ni); 1853 break; 1854 } 1855 return 0; 1856} 1857 1858/* 1859 * Link Metric handling. 1860 */ 1861static int 1862mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1863 const struct ieee80211_frame *wh, 1864 const uint8_t *frm, const uint8_t *efrm) 1865{ 1866 uint32_t metric; 1867 1868 metric = mesh_airtime_calc(ni); 1869 ieee80211_send_action(ni, 1870 IEEE80211_ACTION_CAT_MESHLMETRIC, 1871 IEEE80211_ACTION_MESHLMETRIC_REP, 1872 &metric); 1873 return 0; 1874} 1875 1876static int 1877mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1878 const struct ieee80211_frame *wh, 1879 const uint8_t *frm, const uint8_t *efrm) 1880{ 1881 return 0; 1882} 1883 1884static int 1885mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1886{ 1887 struct ieee80211_bpf_params params; 1888 1889 memset(¶ms, 0, sizeof(params)); 1890 params.ibp_pri = WME_AC_VO; 1891 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1892 /* XXX ucast/mcast */ 1893 params.ibp_try0 = ni->ni_txparms->maxretry; 1894 params.ibp_power = ni->ni_txpower; 1895 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1896 ¶ms); 1897} 1898 1899#define ADDSHORT(frm, v) do { \ 1900 frm[0] = (v) & 0xff; \ 1901 frm[1] = (v) >> 8; \ 1902 frm += 2; \ 1903} while (0) 1904#define ADDWORD(frm, v) do { \ 1905 frm[0] = (v) & 0xff; \ 1906 frm[1] = ((v) >> 8) & 0xff; \ 1907 frm[2] = ((v) >> 16) & 0xff; \ 1908 frm[3] = ((v) >> 24) & 0xff; \ 1909 frm += 4; \ 1910} while (0) 1911 1912static int 1913mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1914 int category, int action, void *args0) 1915{ 1916 struct ieee80211vap *vap = ni->ni_vap; 1917 struct ieee80211com *ic = ni->ni_ic; 1918 uint16_t *args = args0; 1919 const struct ieee80211_rateset *rs; 1920 struct mbuf *m; 1921 uint8_t *frm; 1922 1923 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1924 "send PEER OPEN action: localid 0x%x", args[0]); 1925 1926 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1927 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1928 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1929 ieee80211_ref_node(ni); 1930 1931 m = ieee80211_getmgtframe(&frm, 1932 ic->ic_headroom + sizeof(struct ieee80211_frame), 1933 sizeof(uint16_t) /* action+category */ 1934 + sizeof(uint16_t) /* capabilites */ 1935 + 2 + IEEE80211_RATE_SIZE 1936 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1937 + 2 + IEEE80211_MESHID_LEN 1938 + sizeof(struct ieee80211_meshconf_ie) 1939 + sizeof(struct ieee80211_meshpeer_ie) 1940 ); 1941 if (m != NULL) { 1942 /* 1943 * mesh peer open action frame format: 1944 * [1] category 1945 * [1] action 1946 * [2] capabilities 1947 * [tlv] rates 1948 * [tlv] xrates 1949 * [tlv] mesh id 1950 * [tlv] mesh conf 1951 * [tlv] mesh peer link mgmt 1952 */ 1953 *frm++ = category; 1954 *frm++ = action; 1955 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1956 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1957 frm = ieee80211_add_rates(frm, rs); 1958 frm = ieee80211_add_xrates(frm, rs); 1959 frm = ieee80211_add_meshid(frm, vap); 1960 frm = ieee80211_add_meshconf(frm, vap); 1961 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1962 args[0], 0, 0); 1963 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1964 return mesh_send_action(ni, m); 1965 } else { 1966 vap->iv_stats.is_tx_nobuf++; 1967 ieee80211_free_node(ni); 1968 return ENOMEM; 1969 } 1970} 1971 1972static int 1973mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1974 int category, int action, void *args0) 1975{ 1976 struct ieee80211vap *vap = ni->ni_vap; 1977 struct ieee80211com *ic = ni->ni_ic; 1978 uint16_t *args = args0; 1979 const struct ieee80211_rateset *rs; 1980 struct mbuf *m; 1981 uint8_t *frm; 1982 1983 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1984 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1985 args[0], args[1]); 1986 1987 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1988 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1989 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1990 ieee80211_ref_node(ni); 1991 1992 m = ieee80211_getmgtframe(&frm, 1993 ic->ic_headroom + sizeof(struct ieee80211_frame), 1994 sizeof(uint16_t) /* action+category */ 1995 + sizeof(uint16_t) /* capabilites */ 1996 + sizeof(uint16_t) /* status code */ 1997 + sizeof(uint16_t) /* AID */ 1998 + 2 + IEEE80211_RATE_SIZE 1999 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 2000 + 2 + IEEE80211_MESHID_LEN 2001 + sizeof(struct ieee80211_meshconf_ie) 2002 + sizeof(struct ieee80211_meshpeer_ie) 2003 ); 2004 if (m != NULL) { 2005 /* 2006 * mesh peer confirm action frame format: 2007 * [1] category 2008 * [1] action 2009 * [2] capabilities 2010 * [2] status code 2011 * [2] association id (peer ID) 2012 * [tlv] rates 2013 * [tlv] xrates 2014 * [tlv] mesh id 2015 * [tlv] mesh conf 2016 * [tlv] mesh peer link mgmt 2017 */ 2018 *frm++ = category; 2019 *frm++ = action; 2020 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2021 ADDSHORT(frm, 0); /* status code */ 2022 ADDSHORT(frm, args[1]); /* AID */ 2023 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2024 frm = ieee80211_add_rates(frm, rs); 2025 frm = ieee80211_add_xrates(frm, rs); 2026 frm = ieee80211_add_meshid(frm, vap); 2027 frm = ieee80211_add_meshconf(frm, vap); 2028 frm = ieee80211_add_meshpeer(frm, 2029 IEEE80211_MESH_PEER_LINK_CONFIRM, 2030 args[0], args[1], 0); 2031 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2032 return mesh_send_action(ni, m); 2033 } else { 2034 vap->iv_stats.is_tx_nobuf++; 2035 ieee80211_free_node(ni); 2036 return ENOMEM; 2037 } 2038} 2039 2040static int 2041mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2042 int category, int action, void *args0) 2043{ 2044 struct ieee80211vap *vap = ni->ni_vap; 2045 struct ieee80211com *ic = ni->ni_ic; 2046 uint16_t *args = args0; 2047 struct mbuf *m; 2048 uint8_t *frm; 2049 2050 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2051 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2052 args[0], args[1], args[2]); 2053 2054 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2055 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2056 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2057 ieee80211_ref_node(ni); 2058 2059 m = ieee80211_getmgtframe(&frm, 2060 ic->ic_headroom + sizeof(struct ieee80211_frame), 2061 sizeof(uint16_t) /* action+category */ 2062 + sizeof(uint16_t) /* reason code */ 2063 + 2 + IEEE80211_MESHID_LEN 2064 + sizeof(struct ieee80211_meshpeer_ie) 2065 ); 2066 if (m != NULL) { 2067 /* 2068 * mesh peer close action frame format: 2069 * [1] category 2070 * [1] action 2071 * [2] reason code 2072 * [tlv] mesh id 2073 * [tlv] mesh peer link mgmt 2074 */ 2075 *frm++ = category; 2076 *frm++ = action; 2077 ADDSHORT(frm, args[2]); /* reason code */ 2078 frm = ieee80211_add_meshid(frm, vap); 2079 frm = ieee80211_add_meshpeer(frm, 2080 IEEE80211_MESH_PEER_LINK_CLOSE, 2081 args[0], args[1], args[2]); 2082 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2083 return mesh_send_action(ni, m); 2084 } else { 2085 vap->iv_stats.is_tx_nobuf++; 2086 ieee80211_free_node(ni); 2087 return ENOMEM; 2088 } 2089} 2090 2091static int 2092mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2093 int category, int action, void *arg0) 2094{ 2095 struct ieee80211vap *vap = ni->ni_vap; 2096 struct ieee80211com *ic = ni->ni_ic; 2097 struct mbuf *m; 2098 uint8_t *frm; 2099 2100 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2101 "%s", "send LINK METRIC REQUEST action"); 2102 2103 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2104 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2105 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2106 ieee80211_ref_node(ni); 2107 2108 m = ieee80211_getmgtframe(&frm, 2109 ic->ic_headroom + sizeof(struct ieee80211_frame), 2110 sizeof(uint16_t) /* action+category */ 2111 ); 2112 if (m != NULL) { 2113 /* 2114 * mesh link metric request 2115 * [1] category 2116 * [1] action 2117 */ 2118 *frm++ = category; 2119 *frm++ = action; 2120 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2121 return mesh_send_action(ni, m); 2122 } else { 2123 vap->iv_stats.is_tx_nobuf++; 2124 ieee80211_free_node(ni); 2125 return ENOMEM; 2126 } 2127} 2128 2129static int 2130mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2131 int category, int action, void *args0) 2132{ 2133 struct ieee80211vap *vap = ni->ni_vap; 2134 struct ieee80211com *ic = ni->ni_ic; 2135 uint32_t *metric = args0; 2136 struct mbuf *m; 2137 uint8_t *frm; 2138 2139 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2140 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2141 2142 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2143 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2144 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2145 ieee80211_ref_node(ni); 2146 2147 m = ieee80211_getmgtframe(&frm, 2148 ic->ic_headroom + sizeof(struct ieee80211_frame), 2149 sizeof(uint16_t) /* action+category */ 2150 + sizeof(struct ieee80211_meshlmetric_ie) 2151 ); 2152 if (m != NULL) { 2153 /* 2154 * mesh link metric reply 2155 * [1] category 2156 * [1] action 2157 * [tlv] mesh link metric 2158 */ 2159 *frm++ = category; 2160 *frm++ = action; 2161 frm = ieee80211_add_meshlmetric(frm, *metric); 2162 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2163 return mesh_send_action(ni, m); 2164 } else { 2165 vap->iv_stats.is_tx_nobuf++; 2166 ieee80211_free_node(ni); 2167 return ENOMEM; 2168 } 2169} 2170 2171static void 2172mesh_peer_timeout_setup(struct ieee80211_node *ni) 2173{ 2174 switch (ni->ni_mlstate) { 2175 case IEEE80211_NODE_MESH_HOLDING: 2176 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2177 break; 2178 case IEEE80211_NODE_MESH_CONFIRMRCV: 2179 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2180 break; 2181 case IEEE80211_NODE_MESH_IDLE: 2182 ni->ni_mltval = 0; 2183 break; 2184 default: 2185 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2186 break; 2187 } 2188 if (ni->ni_mltval) 2189 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2190 mesh_peer_timeout_cb, ni); 2191} 2192 2193/* 2194 * Same as above but backoffs timer statisically 50%. 2195 */ 2196static void 2197mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2198{ 2199 uint32_t r; 2200 2201 r = arc4random(); 2202 ni->ni_mltval += r % ni->ni_mltval; 2203 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2204 ni); 2205} 2206 2207static __inline void 2208mesh_peer_timeout_stop(struct ieee80211_node *ni) 2209{ 2210 callout_drain(&ni->ni_mltimer); 2211} 2212 2213/* 2214 * Mesh Peer Link Management FSM timeout handling. 2215 */ 2216static void 2217mesh_peer_timeout_cb(void *arg) 2218{ 2219 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2220 uint16_t args[3]; 2221 2222 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2223 ni, "mesh link timeout, state %d, retry counter %d", 2224 ni->ni_mlstate, ni->ni_mlrcnt); 2225 2226 switch (ni->ni_mlstate) { 2227 case IEEE80211_NODE_MESH_IDLE: 2228 case IEEE80211_NODE_MESH_ESTABLISHED: 2229 break; 2230 case IEEE80211_NODE_MESH_OPENSNT: 2231 case IEEE80211_NODE_MESH_OPENRCV: 2232 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2233 args[0] = ni->ni_mlpid; 2234 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2235 ieee80211_send_action(ni, 2236 IEEE80211_ACTION_CAT_MESHPEERING, 2237 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2238 ni->ni_mlrcnt = 0; 2239 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2240 mesh_peer_timeout_setup(ni); 2241 } else { 2242 args[0] = ni->ni_mlpid; 2243 ieee80211_send_action(ni, 2244 IEEE80211_ACTION_CAT_MESHPEERING, 2245 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2246 ni->ni_mlrcnt++; 2247 mesh_peer_timeout_backoff(ni); 2248 } 2249 break; 2250 case IEEE80211_NODE_MESH_CONFIRMRCV: 2251 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2252 args[0] = ni->ni_mlpid; 2253 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2254 ieee80211_send_action(ni, 2255 IEEE80211_ACTION_CAT_MESHPEERING, 2256 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2257 ni->ni_mlrcnt = 0; 2258 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2259 mesh_peer_timeout_setup(ni); 2260 } else { 2261 ni->ni_mlrcnt++; 2262 mesh_peer_timeout_setup(ni); 2263 } 2264 break; 2265 case IEEE80211_NODE_MESH_HOLDING: 2266 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2267 break; 2268 } 2269} 2270 2271static int 2272mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2273{ 2274 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2275 2276 if (ie == NULL || ie[1] != ms->ms_idlen) 2277 return 1; 2278 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2279} 2280 2281/* 2282 * Check if we are using the same algorithms for this mesh. 2283 */ 2284static int 2285mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2286{ 2287 const struct ieee80211_meshconf_ie *meshconf = 2288 (const struct ieee80211_meshconf_ie *) ie; 2289 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2290 2291 if (meshconf == NULL) 2292 return 1; 2293 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2294 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2295 "unknown path selection algorithm: 0x%x\n", 2296 meshconf->conf_pselid); 2297 return 1; 2298 } 2299 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2300 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2301 "unknown path metric algorithm: 0x%x\n", 2302 meshconf->conf_pmetid); 2303 return 1; 2304 } 2305 if (meshconf->conf_ccid != 0) { 2306 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2307 "unknown congestion control algorithm: 0x%x\n", 2308 meshconf->conf_ccid); 2309 return 1; 2310 } 2311 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2312 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2313 "unknown sync algorithm: 0x%x\n", 2314 meshconf->conf_syncid); 2315 return 1; 2316 } 2317 if (meshconf->conf_authid != 0) { 2318 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2319 "unknown auth auth algorithm: 0x%x\n", 2320 meshconf->conf_pselid); 2321 return 1; 2322 } 2323 /* Not accepting peers */ 2324 if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) { 2325 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2326 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2327 return 1; 2328 } 2329 return 0; 2330} 2331 2332static int 2333mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2334 const uint8_t *ie) 2335{ 2336 const struct ieee80211_meshpeer_ie *meshpeer = 2337 (const struct ieee80211_meshpeer_ie *) ie; 2338 2339 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2340 meshpeer->peer_len > 10) 2341 return 1; 2342 switch (subtype) { 2343 case IEEE80211_MESH_PEER_LINK_OPEN: 2344 if (meshpeer->peer_len != 6) 2345 return 1; 2346 break; 2347 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2348 if (meshpeer->peer_len != 8) 2349 return 1; 2350 break; 2351 case IEEE80211_MESH_PEER_LINK_CLOSE: 2352 if (meshpeer->peer_len < 8) 2353 return 1; 2354 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2355 return 1; 2356 if (meshpeer->peer_rcode == 0) 2357 return 1; 2358 break; 2359 } 2360 return 0; 2361} 2362 2363/* 2364 * Add a Mesh ID IE to a frame. 2365 */ 2366uint8_t * 2367ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2368{ 2369 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2370 2371 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2372 2373 *frm++ = IEEE80211_ELEMID_MESHID; 2374 *frm++ = ms->ms_idlen; 2375 memcpy(frm, ms->ms_id, ms->ms_idlen); 2376 return frm + ms->ms_idlen; 2377} 2378 2379/* 2380 * Add a Mesh Configuration IE to a frame. 2381 * For now just use HWMP routing, Airtime link metric, Null Congestion 2382 * Signaling, Null Sync Protocol and Null Authentication. 2383 */ 2384uint8_t * 2385ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2386{ 2387 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2388 2389 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2390 2391 *frm++ = IEEE80211_ELEMID_MESHCONF; 2392 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2393 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2394 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2395 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2396 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2397 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2398 /* NB: set the number of neighbors before the rest */ 2399 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2400 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2401 *frm |= IEEE80211_MESHCONF_FORM_MP; 2402 frm += 1; 2403 *frm = 0; 2404 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2405 *frm |= IEEE80211_MESHCONF_CAP_AP; 2406 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2407 *frm |= IEEE80211_MESHCONF_CAP_FWRD; 2408 frm += 1; 2409 return frm; 2410} 2411 2412/* 2413 * Add a Mesh Peer Management IE to a frame. 2414 */ 2415uint8_t * 2416ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2417 uint16_t peerid, uint16_t reason) 2418{ 2419 /* XXX change for AH */ 2420 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2421 2422 KASSERT(localid != 0, ("localid == 0")); 2423 2424 *frm++ = IEEE80211_ELEMID_MESHPEER; 2425 switch (subtype) { 2426 case IEEE80211_MESH_PEER_LINK_OPEN: 2427 *frm++ = 6; /* length */ 2428 memcpy(frm, meshpeerproto, 4); 2429 frm += 4; 2430 ADDSHORT(frm, localid); /* local ID */ 2431 break; 2432 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2433 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2434 *frm++ = 8; /* length */ 2435 memcpy(frm, meshpeerproto, 4); 2436 frm += 4; 2437 ADDSHORT(frm, localid); /* local ID */ 2438 ADDSHORT(frm, peerid); /* peer ID */ 2439 break; 2440 case IEEE80211_MESH_PEER_LINK_CLOSE: 2441 if (peerid) 2442 *frm++ = 10; /* length */ 2443 else 2444 *frm++ = 8; /* length */ 2445 memcpy(frm, meshpeerproto, 4); 2446 frm += 4; 2447 ADDSHORT(frm, localid); /* local ID */ 2448 if (peerid) 2449 ADDSHORT(frm, peerid); /* peer ID */ 2450 ADDSHORT(frm, reason); 2451 break; 2452 } 2453 return frm; 2454} 2455 2456/* 2457 * Compute an Airtime Link Metric for the link with this node. 2458 * 2459 * Based on Draft 3.0 spec (11B.10, p.149). 2460 */ 2461/* 2462 * Max 802.11s overhead. 2463 */ 2464#define IEEE80211_MESH_MAXOVERHEAD \ 2465 (sizeof(struct ieee80211_qosframe_addr4) \ 2466 + sizeof(struct ieee80211_meshcntl_ae11) \ 2467 + sizeof(struct llc) \ 2468 + IEEE80211_ADDR_LEN \ 2469 + IEEE80211_WEP_IVLEN \ 2470 + IEEE80211_WEP_KIDLEN \ 2471 + IEEE80211_WEP_CRCLEN \ 2472 + IEEE80211_WEP_MICLEN \ 2473 + IEEE80211_CRC_LEN) 2474uint32_t 2475mesh_airtime_calc(struct ieee80211_node *ni) 2476{ 2477#define M_BITS 8 2478#define S_FACTOR (2 * M_BITS) 2479 struct ieee80211com *ic = ni->ni_ic; 2480 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2481 const static int nbits = 8192 << M_BITS; 2482 uint32_t overhead, rate, errrate; 2483 uint64_t res; 2484 2485 /* Time to transmit a frame */ 2486 rate = ni->ni_txrate; 2487 overhead = ieee80211_compute_duration(ic->ic_rt, 2488 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2489 /* Error rate in percentage */ 2490 /* XXX assuming small failures are ok */ 2491 errrate = (((ifp->if_oerrors + 2492 ifp->if_ierrors) / 100) << M_BITS) / 100; 2493 res = (overhead + (nbits / rate)) * 2494 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2495 2496 return (uint32_t)(res >> S_FACTOR); 2497#undef M_BITS 2498#undef S_FACTOR 2499} 2500 2501/* 2502 * Add a Mesh Link Metric report IE to a frame. 2503 */ 2504uint8_t * 2505ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2506{ 2507 *frm++ = IEEE80211_ELEMID_MESHLINK; 2508 *frm++ = 4; 2509 ADDWORD(frm, metric); 2510 return frm; 2511} 2512#undef ADDSHORT 2513#undef ADDWORD 2514 2515/* 2516 * Initialize any mesh-specific node state. 2517 */ 2518void 2519ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2520{ 2521 ni->ni_flags |= IEEE80211_NODE_QOS; 2522 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2523} 2524 2525/* 2526 * Cleanup any mesh-specific node state. 2527 */ 2528void 2529ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2530{ 2531 struct ieee80211vap *vap = ni->ni_vap; 2532 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2533 2534 callout_drain(&ni->ni_mltimer); 2535 /* NB: short-circuit callbacks after mesh_vdetach */ 2536 if (vap->iv_mesh != NULL) 2537 ms->ms_ppath->mpp_peerdown(ni); 2538} 2539 2540void 2541ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2542{ 2543 ni->ni_meshidlen = ie[1]; 2544 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2545} 2546 2547/* 2548 * Setup mesh-specific node state on neighbor discovery. 2549 */ 2550void 2551ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2552 const struct ieee80211_frame *wh, 2553 const struct ieee80211_scanparams *sp) 2554{ 2555 ieee80211_parse_meshid(ni, sp->meshid); 2556} 2557 2558void 2559ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2560 struct ieee80211_beacon_offsets *bo) 2561{ 2562 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2563 2564 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2565 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2566 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2567 } 2568} 2569 2570static int 2571mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2572{ 2573 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2574 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2575 struct ieee80211_mesh_route *rt; 2576 struct ieee80211req_mesh_route *imr; 2577 size_t len, off; 2578 uint8_t *p; 2579 int error; 2580 2581 if (vap->iv_opmode != IEEE80211_M_MBSS) 2582 return ENOSYS; 2583 2584 error = 0; 2585 switch (ireq->i_type) { 2586 case IEEE80211_IOC_MESH_ID: 2587 ireq->i_len = ms->ms_idlen; 2588 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2589 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2590 break; 2591 case IEEE80211_IOC_MESH_AP: 2592 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2593 break; 2594 case IEEE80211_IOC_MESH_FWRD: 2595 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2596 break; 2597 case IEEE80211_IOC_MESH_TTL: 2598 ireq->i_val = ms->ms_ttl; 2599 break; 2600 case IEEE80211_IOC_MESH_RTCMD: 2601 switch (ireq->i_val) { 2602 case IEEE80211_MESH_RTCMD_LIST: 2603 len = 0; 2604 MESH_RT_LOCK(ms); 2605 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2606 len += sizeof(*imr); 2607 } 2608 MESH_RT_UNLOCK(ms); 2609 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2610 ireq->i_len = len; 2611 return ENOMEM; 2612 } 2613 ireq->i_len = len; 2614 /* XXX M_WAIT? */ 2615 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2616 if (p == NULL) 2617 return ENOMEM; 2618 off = 0; 2619 MESH_RT_LOCK(ms); 2620 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2621 if (off >= len) 2622 break; 2623 imr = (struct ieee80211req_mesh_route *) 2624 (p + off); 2625 imr->imr_flags = rt->rt_flags; 2626 IEEE80211_ADDR_COPY(imr->imr_dest, 2627 rt->rt_dest); 2628 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2629 rt->rt_nexthop); 2630 imr->imr_metric = rt->rt_metric; 2631 imr->imr_nhops = rt->rt_nhops; 2632 imr->imr_lifetime = rt->rt_lifetime; 2633 imr->imr_lastmseq = rt->rt_lastmseq; 2634 off += sizeof(*imr); 2635 } 2636 MESH_RT_UNLOCK(ms); 2637 error = copyout(p, (uint8_t *)ireq->i_data, 2638 ireq->i_len); 2639 free(p, M_TEMP); 2640 break; 2641 case IEEE80211_MESH_RTCMD_FLUSH: 2642 case IEEE80211_MESH_RTCMD_ADD: 2643 case IEEE80211_MESH_RTCMD_DELETE: 2644 return EINVAL; 2645 default: 2646 return ENOSYS; 2647 } 2648 break; 2649 case IEEE80211_IOC_MESH_PR_METRIC: 2650 len = strlen(ms->ms_pmetric->mpm_descr); 2651 if (ireq->i_len < len) 2652 return EINVAL; 2653 ireq->i_len = len; 2654 error = copyout(ms->ms_pmetric->mpm_descr, 2655 (uint8_t *)ireq->i_data, len); 2656 break; 2657 case IEEE80211_IOC_MESH_PR_PATH: 2658 len = strlen(ms->ms_ppath->mpp_descr); 2659 if (ireq->i_len < len) 2660 return EINVAL; 2661 ireq->i_len = len; 2662 error = copyout(ms->ms_ppath->mpp_descr, 2663 (uint8_t *)ireq->i_data, len); 2664 break; 2665 default: 2666 return ENOSYS; 2667 } 2668 2669 return error; 2670} 2671IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2672 2673static int 2674mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2675{ 2676 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2677 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2678 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2679 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2680 int error; 2681 2682 if (vap->iv_opmode != IEEE80211_M_MBSS) 2683 return ENOSYS; 2684 2685 error = 0; 2686 switch (ireq->i_type) { 2687 case IEEE80211_IOC_MESH_ID: 2688 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2689 return EINVAL; 2690 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2691 if (error != 0) 2692 break; 2693 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2694 ms->ms_idlen = ireq->i_len; 2695 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2696 error = ENETRESET; 2697 break; 2698 case IEEE80211_IOC_MESH_AP: 2699 if (ireq->i_val) 2700 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2701 else 2702 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2703 error = ENETRESET; 2704 break; 2705 case IEEE80211_IOC_MESH_FWRD: 2706 if (ireq->i_val) 2707 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2708 else 2709 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2710 break; 2711 case IEEE80211_IOC_MESH_TTL: 2712 ms->ms_ttl = (uint8_t) ireq->i_val; 2713 break; 2714 case IEEE80211_IOC_MESH_RTCMD: 2715 switch (ireq->i_val) { 2716 case IEEE80211_MESH_RTCMD_LIST: 2717 return EINVAL; 2718 case IEEE80211_MESH_RTCMD_FLUSH: 2719 ieee80211_mesh_rt_flush(vap); 2720 break; 2721 case IEEE80211_MESH_RTCMD_ADD: 2722 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2723 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2724 return EINVAL; 2725 error = copyin(ireq->i_data, &tmpaddr, 2726 IEEE80211_ADDR_LEN); 2727 if (error == 0) 2728 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2729 break; 2730 case IEEE80211_MESH_RTCMD_DELETE: 2731 ieee80211_mesh_rt_del(vap, ireq->i_data); 2732 break; 2733 default: 2734 return ENOSYS; 2735 } 2736 break; 2737 case IEEE80211_IOC_MESH_PR_METRIC: 2738 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2739 if (error == 0) { 2740 error = mesh_select_proto_metric(vap, tmpproto); 2741 if (error == 0) 2742 error = ENETRESET; 2743 } 2744 break; 2745 case IEEE80211_IOC_MESH_PR_PATH: 2746 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2747 if (error == 0) { 2748 error = mesh_select_proto_path(vap, tmpproto); 2749 if (error == 0) 2750 error = ENETRESET; 2751 } 2752 break; 2753 default: 2754 return ENOSYS; 2755 } 2756 return error; 2757} 2758IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2759