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("$FreeBSD$"); 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_req; 126static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep; 127 128static ieee80211_send_action_func mesh_send_action_meshpeering_open; 129static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 130static ieee80211_send_action_func mesh_send_action_meshpeering_close; 131static ieee80211_send_action_func mesh_send_action_meshlink_request; 132static ieee80211_send_action_func mesh_send_action_meshlink_reply; 133 134static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 135 .mpm_descr = "AIRTIME", 136 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 137 .mpm_metric = mesh_airtime_calc, 138}; 139 140static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 141static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 142 143#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) 144#define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 145#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 146 147MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 148 149/* 150 * Helper functions to manipulate the Mesh routing table. 151 */ 152 153static struct ieee80211_mesh_route * 154mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 155 const uint8_t dest[IEEE80211_ADDR_LEN]) 156{ 157 struct ieee80211_mesh_route *rt; 158 159 MESH_RT_LOCK_ASSERT(ms); 160 161 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 162 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 163 return rt; 164 } 165 return NULL; 166} 167 168static struct ieee80211_mesh_route * 169mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 170 const uint8_t dest[IEEE80211_ADDR_LEN]) 171{ 172 struct ieee80211_mesh_route *rt; 173 174 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 175 ("%s: adding broadcast to the routing table", __func__)); 176 177 MESH_RT_LOCK_ASSERT(ms); 178 179 rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 180 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 181 if (rt != NULL) { 182 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 183 rt->rt_priv = (void *)ALIGN(&rt[1]); 184 rt->rt_crtime = ticks; 185 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 186 } 187 return rt; 188} 189 190struct ieee80211_mesh_route * 191ieee80211_mesh_rt_find(struct ieee80211vap *vap, 192 const uint8_t dest[IEEE80211_ADDR_LEN]) 193{ 194 struct ieee80211_mesh_state *ms = vap->iv_mesh; 195 struct ieee80211_mesh_route *rt; 196 197 MESH_RT_LOCK(ms); 198 rt = mesh_rt_find_locked(ms, dest); 199 MESH_RT_UNLOCK(ms); 200 return rt; 201} 202 203struct ieee80211_mesh_route * 204ieee80211_mesh_rt_add(struct ieee80211vap *vap, 205 const uint8_t dest[IEEE80211_ADDR_LEN]) 206{ 207 struct ieee80211_mesh_state *ms = vap->iv_mesh; 208 struct ieee80211_mesh_route *rt; 209 210 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 211 ("%s: duplicate entry in the routing table", __func__)); 212 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 213 ("%s: adding self to the routing table", __func__)); 214 215 MESH_RT_LOCK(ms); 216 rt = mesh_rt_add_locked(ms, dest); 217 MESH_RT_UNLOCK(ms); 218 return rt; 219} 220 221/* 222 * Add a proxy route (as needed) for the specified destination. 223 */ 224void 225ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 226 const uint8_t dest[IEEE80211_ADDR_LEN]) 227{ 228 struct ieee80211_mesh_state *ms = vap->iv_mesh; 229 struct ieee80211_mesh_route *rt; 230 231 MESH_RT_LOCK(ms); 232 rt = mesh_rt_find_locked(ms, dest); 233 if (rt == NULL) { 234 rt = mesh_rt_add_locked(ms, dest); 235 if (rt == NULL) { 236 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 237 "%s", "unable to add proxy entry"); 238 vap->iv_stats.is_mesh_rtaddfailed++; 239 } else { 240 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 241 "%s", "add proxy entry"); 242 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 243 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 244 | IEEE80211_MESHRT_FLAGS_PROXY; 245 } 246 /* XXX assert PROXY? */ 247 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 248 struct ieee80211com *ic = vap->iv_ic; 249 /* 250 * Fix existing entry created by received frames from 251 * stations that have some memory of dest. We also 252 * flush any frames held on the staging queue; delivering 253 * them is too much trouble right now. 254 */ 255 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 256 "%s", "fix proxy entry"); 257 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 258 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 259 | IEEE80211_MESHRT_FLAGS_PROXY; 260 /* XXX belongs in hwmp */ 261 ieee80211_ageq_drain_node(&ic->ic_stageq, 262 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 263 /* XXX stat? */ 264 } 265 MESH_RT_UNLOCK(ms); 266} 267 268static __inline void 269mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 270{ 271 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 272 free(rt, M_80211_MESH_RT); 273} 274 275void 276ieee80211_mesh_rt_del(struct ieee80211vap *vap, 277 const uint8_t dest[IEEE80211_ADDR_LEN]) 278{ 279 struct ieee80211_mesh_state *ms = vap->iv_mesh; 280 struct ieee80211_mesh_route *rt, *next; 281 282 MESH_RT_LOCK(ms); 283 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 284 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 285 mesh_rt_del(ms, rt); 286 MESH_RT_UNLOCK(ms); 287 return; 288 } 289 } 290 MESH_RT_UNLOCK(ms); 291} 292 293void 294ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 295{ 296 struct ieee80211_mesh_state *ms = vap->iv_mesh; 297 struct ieee80211_mesh_route *rt, *next; 298 299 if (ms == NULL) 300 return; 301 MESH_RT_LOCK(ms); 302 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 303 mesh_rt_del(ms, rt); 304 MESH_RT_UNLOCK(ms); 305} 306 307void 308ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 309 const uint8_t peer[IEEE80211_ADDR_LEN]) 310{ 311 struct ieee80211_mesh_state *ms = vap->iv_mesh; 312 struct ieee80211_mesh_route *rt, *next; 313 314 MESH_RT_LOCK(ms); 315 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 316 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 317 mesh_rt_del(ms, rt); 318 } 319 MESH_RT_UNLOCK(ms); 320} 321 322/* 323 * Flush expired routing entries, i.e. those in invalid state for 324 * some time. 325 */ 326static void 327mesh_rt_flush_invalid(struct ieee80211vap *vap) 328{ 329 struct ieee80211_mesh_state *ms = vap->iv_mesh; 330 struct ieee80211_mesh_route *rt, *next; 331 332 if (ms == NULL) 333 return; 334 MESH_RT_LOCK(ms); 335 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 336 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 337 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 338 mesh_rt_del(ms, rt); 339 } 340 MESH_RT_UNLOCK(ms); 341} 342 343#define N(a) (sizeof(a) / sizeof(a[0])) 344int 345ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 346{ 347 int i, firstempty = -1; 348 349 for (i = 0; i < N(mesh_proto_paths); i++) { 350 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 351 IEEE80211_MESH_PROTO_DSZ) == 0) 352 return EEXIST; 353 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 354 firstempty = i; 355 } 356 if (firstempty < 0) 357 return ENOSPC; 358 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 359 mesh_proto_paths[firstempty].mpp_active = 1; 360 return 0; 361} 362 363int 364ieee80211_mesh_register_proto_metric(const struct 365 ieee80211_mesh_proto_metric *mpm) 366{ 367 int i, firstempty = -1; 368 369 for (i = 0; i < N(mesh_proto_metrics); i++) { 370 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 371 IEEE80211_MESH_PROTO_DSZ) == 0) 372 return EEXIST; 373 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 374 firstempty = i; 375 } 376 if (firstempty < 0) 377 return ENOSPC; 378 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 379 mesh_proto_metrics[firstempty].mpm_active = 1; 380 return 0; 381} 382 383static int 384mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 385{ 386 struct ieee80211_mesh_state *ms = vap->iv_mesh; 387 int i; 388 389 for (i = 0; i < N(mesh_proto_paths); i++) { 390 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 391 ms->ms_ppath = &mesh_proto_paths[i]; 392 return 0; 393 } 394 } 395 return ENOENT; 396} 397 398static int 399mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 400{ 401 struct ieee80211_mesh_state *ms = vap->iv_mesh; 402 int i; 403 404 for (i = 0; i < N(mesh_proto_metrics); i++) { 405 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 406 ms->ms_pmetric = &mesh_proto_metrics[i]; 407 return 0; 408 } 409 } 410 return ENOENT; 411} 412#undef N 413 414static void 415ieee80211_mesh_init(void) 416{ 417 418 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 419 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 420 421 /* 422 * Setup mesh parameters that depends on the clock frequency. 423 */ 424 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 425 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 426 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 427 428 /* 429 * Register action frame handlers. 430 */ 431 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 432 IEEE80211_ACTION_MESHPEERING_OPEN, 433 mesh_recv_action_meshpeering_open); 434 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 435 IEEE80211_ACTION_MESHPEERING_CONFIRM, 436 mesh_recv_action_meshpeering_confirm); 437 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 438 IEEE80211_ACTION_MESHPEERING_CLOSE, 439 mesh_recv_action_meshpeering_close); 440 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 441 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 442 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 443 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 444 445 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 446 IEEE80211_ACTION_MESHPEERING_OPEN, 447 mesh_send_action_meshpeering_open); 448 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 449 IEEE80211_ACTION_MESHPEERING_CONFIRM, 450 mesh_send_action_meshpeering_confirm); 451 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 452 IEEE80211_ACTION_MESHPEERING_CLOSE, 453 mesh_send_action_meshpeering_close); 454 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 455 IEEE80211_ACTION_MESHLMETRIC_REQ, 456 mesh_send_action_meshlink_request); 457 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 458 IEEE80211_ACTION_MESHLMETRIC_REP, 459 mesh_send_action_meshlink_reply); 460 461 /* 462 * Register Airtime Link Metric. 463 */ 464 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 465 466} 467SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 468 469void 470ieee80211_mesh_attach(struct ieee80211com *ic) 471{ 472 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 473} 474 475void 476ieee80211_mesh_detach(struct ieee80211com *ic) 477{ 478} 479 480static void 481mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 482{ 483 struct ieee80211com *ic = ni->ni_ic; 484 uint16_t args[3]; 485 486 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 487 args[0] = ni->ni_mlpid; 488 args[1] = ni->ni_mllid; 489 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 490 ieee80211_send_action(ni, 491 IEEE80211_ACTION_CAT_MESHPEERING, 492 IEEE80211_ACTION_MESHPEERING_CLOSE, 493 args); 494 } 495 callout_drain(&ni->ni_mltimer); 496 /* XXX belongs in hwmp */ 497 ieee80211_ageq_drain_node(&ic->ic_stageq, 498 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 499} 500 501static void 502mesh_vdetach(struct ieee80211vap *vap) 503{ 504 struct ieee80211_mesh_state *ms = vap->iv_mesh; 505 506 callout_drain(&ms->ms_cleantimer); 507 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 508 NULL); 509 ieee80211_mesh_rt_flush(vap); 510 mtx_destroy(&ms->ms_rt_lock); 511 ms->ms_ppath->mpp_vdetach(vap); 512 free(vap->iv_mesh, M_80211_VAP); 513 vap->iv_mesh = NULL; 514} 515 516static void 517mesh_vattach(struct ieee80211vap *vap) 518{ 519 struct ieee80211_mesh_state *ms; 520 vap->iv_newstate = mesh_newstate; 521 vap->iv_input = mesh_input; 522 vap->iv_opdetach = mesh_vdetach; 523 vap->iv_recv_mgmt = mesh_recv_mgmt; 524 vap->iv_recv_ctl = mesh_recv_ctl; 525 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 526 M_NOWAIT | M_ZERO); 527 if (ms == NULL) { 528 printf("%s: couldn't alloc MBSS state\n", __func__); 529 return; 530 } 531 vap->iv_mesh = ms; 532 ms->ms_seq = 0; 533 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 534 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 535 TAILQ_INIT(&ms->ms_routes); 536 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 537 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 538 mesh_select_proto_metric(vap, "AIRTIME"); 539 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 540 mesh_select_proto_path(vap, "HWMP"); 541 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 542 ms->ms_ppath->mpp_vattach(vap); 543} 544 545/* 546 * IEEE80211_M_MBSS vap state machine handler. 547 */ 548static int 549mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 550{ 551 struct ieee80211_mesh_state *ms = vap->iv_mesh; 552 struct ieee80211com *ic = vap->iv_ic; 553 struct ieee80211_node *ni; 554 enum ieee80211_state ostate; 555 556 IEEE80211_LOCK_ASSERT(ic); 557 558 ostate = vap->iv_state; 559 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 560 __func__, ieee80211_state_name[ostate], 561 ieee80211_state_name[nstate], arg); 562 vap->iv_state = nstate; /* state transition */ 563 if (ostate != IEEE80211_S_SCAN) 564 ieee80211_cancel_scan(vap); /* background scan */ 565 ni = vap->iv_bss; /* NB: no reference held */ 566 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 567 callout_drain(&ms->ms_cleantimer); 568 switch (nstate) { 569 case IEEE80211_S_INIT: 570 switch (ostate) { 571 case IEEE80211_S_SCAN: 572 ieee80211_cancel_scan(vap); 573 break; 574 case IEEE80211_S_CAC: 575 ieee80211_dfs_cac_stop(vap); 576 break; 577 case IEEE80211_S_RUN: 578 ieee80211_iterate_nodes(&ic->ic_sta, 579 mesh_vdetach_peers, NULL); 580 break; 581 default: 582 break; 583 } 584 if (ostate != IEEE80211_S_INIT) { 585 /* NB: optimize INIT -> INIT case */ 586 ieee80211_reset_bss(vap); 587 ieee80211_mesh_rt_flush(vap); 588 } 589 break; 590 case IEEE80211_S_SCAN: 591 switch (ostate) { 592 case IEEE80211_S_INIT: 593 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 594 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 595 ms->ms_idlen != 0) { 596 /* 597 * Already have a channel and a mesh ID; bypass 598 * the scan and startup immediately. 599 */ 600 ieee80211_create_ibss(vap, vap->iv_des_chan); 601 break; 602 } 603 /* 604 * Initiate a scan. We can come here as a result 605 * of an IEEE80211_IOC_SCAN_REQ too in which case 606 * the vap will be marked with IEEE80211_FEXT_SCANREQ 607 * and the scan request parameters will be present 608 * in iv_scanreq. Otherwise we do the default. 609 */ 610 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 611 ieee80211_check_scan(vap, 612 vap->iv_scanreq_flags, 613 vap->iv_scanreq_duration, 614 vap->iv_scanreq_mindwell, 615 vap->iv_scanreq_maxdwell, 616 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 617 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 618 } else 619 ieee80211_check_scan_current(vap); 620 break; 621 default: 622 break; 623 } 624 break; 625 case IEEE80211_S_CAC: 626 /* 627 * Start CAC on a DFS channel. We come here when starting 628 * a bss on a DFS channel (see ieee80211_create_ibss). 629 */ 630 ieee80211_dfs_cac_start(vap); 631 break; 632 case IEEE80211_S_RUN: 633 switch (ostate) { 634 case IEEE80211_S_INIT: 635 /* 636 * Already have a channel; bypass the 637 * scan and startup immediately. 638 * Note that ieee80211_create_ibss will call 639 * back to do a RUN->RUN state change. 640 */ 641 ieee80211_create_ibss(vap, 642 ieee80211_ht_adjust_channel(ic, 643 ic->ic_curchan, vap->iv_flags_ht)); 644 /* NB: iv_bss is changed on return */ 645 break; 646 case IEEE80211_S_CAC: 647 /* 648 * NB: This is the normal state change when CAC 649 * expires and no radar was detected; no need to 650 * clear the CAC timer as it's already expired. 651 */ 652 /* fall thru... */ 653 case IEEE80211_S_CSA: 654#if 0 655 /* 656 * Shorten inactivity timer of associated stations 657 * to weed out sta's that don't follow a CSA. 658 */ 659 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 660#endif 661 /* 662 * Update bss node channel to reflect where 663 * we landed after CSA. 664 */ 665 ieee80211_node_set_chan(vap->iv_bss, 666 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 667 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 668 /* XXX bypass debug msgs */ 669 break; 670 case IEEE80211_S_SCAN: 671 case IEEE80211_S_RUN: 672#ifdef IEEE80211_DEBUG 673 if (ieee80211_msg_debug(vap)) { 674 struct ieee80211_node *ni = vap->iv_bss; 675 ieee80211_note(vap, 676 "synchronized with %s meshid ", 677 ether_sprintf(ni->ni_meshid)); 678 ieee80211_print_essid(ni->ni_meshid, 679 ni->ni_meshidlen); 680 /* XXX MCS/HT */ 681 printf(" channel %d\n", 682 ieee80211_chan2ieee(ic, ic->ic_curchan)); 683 } 684#endif 685 break; 686 default: 687 break; 688 } 689 ieee80211_node_authorize(vap->iv_bss); 690 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 691 mesh_rt_cleanup_cb, vap); 692 break; 693 default: 694 break; 695 } 696 /* NB: ostate not nstate */ 697 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 698 return 0; 699} 700 701static void 702mesh_rt_cleanup_cb(void *arg) 703{ 704 struct ieee80211vap *vap = arg; 705 struct ieee80211_mesh_state *ms = vap->iv_mesh; 706 707 mesh_rt_flush_invalid(vap); 708 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 709 mesh_rt_cleanup_cb, vap); 710} 711 712 713/* 714 * Helper function to note the Mesh Peer Link FSM change. 715 */ 716static void 717mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 718{ 719 struct ieee80211vap *vap = ni->ni_vap; 720 struct ieee80211_mesh_state *ms = vap->iv_mesh; 721#ifdef IEEE80211_DEBUG 722 static const char *meshlinkstates[] = { 723 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 724 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 725 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 726 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 727 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 728 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 729 }; 730#endif 731 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 732 ni, "peer link: %s -> %s", 733 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 734 735 /* track neighbor count */ 736 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 737 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 738 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 739 ms->ms_neighbors++; 740 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 741 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 742 state != IEEE80211_NODE_MESH_ESTABLISHED) { 743 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 744 ms->ms_neighbors--; 745 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 746 } 747 ni->ni_mlstate = state; 748 switch (state) { 749 case IEEE80211_NODE_MESH_HOLDING: 750 ms->ms_ppath->mpp_peerdown(ni); 751 break; 752 case IEEE80211_NODE_MESH_ESTABLISHED: 753 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 754 break; 755 default: 756 break; 757 } 758} 759 760/* 761 * Helper function to generate a unique local ID required for mesh 762 * peer establishment. 763 */ 764static void 765mesh_checkid(void *arg, struct ieee80211_node *ni) 766{ 767 uint16_t *r = arg; 768 769 if (*r == ni->ni_mllid) 770 *(uint16_t *)arg = 0; 771} 772 773static uint32_t 774mesh_generateid(struct ieee80211vap *vap) 775{ 776 int maxiter = 4; 777 uint16_t r; 778 779 do { 780 get_random_bytes(&r, 2); 781 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 782 maxiter--; 783 } while (r == 0 && maxiter > 0); 784 return r; 785} 786 787/* 788 * Verifies if we already received this packet by checking its 789 * sequence number. 790 * Returns 0 if the frame is to be accepted, 1 otherwise. 791 */ 792static int 793mesh_checkpseq(struct ieee80211vap *vap, 794 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 795{ 796 struct ieee80211_mesh_route *rt; 797 798 rt = ieee80211_mesh_rt_find(vap, source); 799 if (rt == NULL) { 800 rt = ieee80211_mesh_rt_add(vap, source); 801 if (rt == NULL) { 802 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 803 "%s", "add mcast route failed"); 804 vap->iv_stats.is_mesh_rtaddfailed++; 805 return 1; 806 } 807 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 808 "add mcast route, mesh seqno %d", seq); 809 rt->rt_lastmseq = seq; 810 return 0; 811 } 812 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 813 return 1; 814 } else { 815 rt->rt_lastmseq = seq; 816 return 0; 817 } 818} 819 820/* 821 * Iterate the routing table and locate the next hop. 822 */ 823static struct ieee80211_node * 824mesh_find_txnode(struct ieee80211vap *vap, 825 const uint8_t dest[IEEE80211_ADDR_LEN]) 826{ 827 struct ieee80211_mesh_route *rt; 828 829 rt = ieee80211_mesh_rt_find(vap, dest); 830 if (rt == NULL) 831 return NULL; 832 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 833 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 834 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 835 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 836 /* XXX stat */ 837 return NULL; 838 } 839 return ieee80211_find_txnode(vap, rt->rt_nexthop); 840} 841 842/* 843 * Forward the specified frame. 844 * Decrement the TTL and set TA to our MAC address. 845 */ 846static void 847mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 848 const struct ieee80211_meshcntl *mc) 849{ 850 struct ieee80211com *ic = vap->iv_ic; 851 struct ieee80211_mesh_state *ms = vap->iv_mesh; 852 struct ifnet *ifp = vap->iv_ifp; 853 struct ifnet *parent = ic->ic_ifp; 854 const struct ieee80211_frame *wh = 855 mtod(m, const struct ieee80211_frame *); 856 struct mbuf *mcopy; 857 struct ieee80211_meshcntl *mccopy; 858 struct ieee80211_frame *whcopy; 859 struct ieee80211_node *ni; 860 int err; 861 862 if (mc->mc_ttl == 0) { 863 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 864 "%s", "frame not fwd'd, ttl 0"); 865 vap->iv_stats.is_mesh_fwd_ttl++; 866 return; 867 } 868 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 869 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 870 "%s", "frame not fwd'd, fwding disabled"); 871 vap->iv_stats.is_mesh_fwd_disabled++; 872 return; 873 } 874 mcopy = m_dup(m, M_DONTWAIT); 875 if (mcopy == NULL) { 876 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 877 "%s", "frame not fwd'd, cannot dup"); 878 vap->iv_stats.is_mesh_fwd_nobuf++; 879 ifp->if_oerrors++; 880 return; 881 } 882 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 883 sizeof(struct ieee80211_meshcntl)); 884 if (mcopy == NULL) { 885 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 886 "%s", "frame not fwd'd, too short"); 887 vap->iv_stats.is_mesh_fwd_tooshort++; 888 ifp->if_oerrors++; 889 m_freem(mcopy); 890 return; 891 } 892 whcopy = mtod(mcopy, struct ieee80211_frame *); 893 mccopy = (struct ieee80211_meshcntl *) 894 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 895 /* XXX clear other bits? */ 896 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 897 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 898 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 899 ni = ieee80211_ref_node(vap->iv_bss); 900 mcopy->m_flags |= M_MCAST; 901 } else { 902 ni = mesh_find_txnode(vap, whcopy->i_addr3); 903 if (ni == NULL) { 904 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 905 "%s", "frame not fwd'd, no path"); 906 vap->iv_stats.is_mesh_fwd_nopath++; 907 m_freem(mcopy); 908 return; 909 } 910 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 911 } 912 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 913 mccopy->mc_ttl--; 914 915 /* XXX calculate priority so drivers can find the tx queue */ 916 M_WME_SETAC(mcopy, WME_AC_BE); 917 918 /* XXX do we know m_nextpkt is NULL? */ 919 mcopy->m_pkthdr.rcvif = (void *) ni; 920 err = parent->if_transmit(parent, mcopy); 921 if (err != 0) { 922 /* NB: IFQ_HANDOFF reclaims mbuf */ 923 ieee80211_free_node(ni); 924 } else { 925 ifp->if_opackets++; 926 } 927} 928 929static struct mbuf * 930mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 931{ 932#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 933 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 934 sizeof(struct ieee80211_meshcntl_ae11)]; 935 const struct ieee80211_qosframe_addr4 *wh; 936 const struct ieee80211_meshcntl_ae10 *mc; 937 struct ether_header *eh; 938 struct llc *llc; 939 int ae; 940 941 if (m->m_len < hdrlen + sizeof(*llc) && 942 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 943 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 944 "discard data frame: %s", "m_pullup failed"); 945 vap->iv_stats.is_rx_tooshort++; 946 return NULL; 947 } 948 memcpy(b, mtod(m, caddr_t), hdrlen); 949 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 950 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 951 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 952 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 953 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 954 955 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 956 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 957 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 958 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 959 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 960 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 961 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 962 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 963 llc = NULL; 964 } else { 965 m_adj(m, hdrlen - sizeof(*eh)); 966 } 967 eh = mtod(m, struct ether_header *); 968 ae = mc->mc_flags & 3; 969 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 970 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 971 if (ae == 0) { 972 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 973 } else if (ae == 1) { 974 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 975 } else { 976 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 977 (const struct ieee80211_frame *)wh, NULL, 978 "bad AE %d", ae); 979 vap->iv_stats.is_mesh_badae++; 980 m_freem(m); 981 return NULL; 982 } 983 } else { 984 if (ae == 0) { 985 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 986 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 987 } else if (ae == 2) { 988 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 989 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 990 } else { 991 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 992 (const struct ieee80211_frame *)wh, NULL, 993 "bad AE %d", ae); 994 vap->iv_stats.is_mesh_badae++; 995 m_freem(m); 996 return NULL; 997 } 998 } 999#ifdef ALIGNED_POINTER 1000 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 1001 m = ieee80211_realign(vap, m, sizeof(*eh)); 1002 if (m == NULL) 1003 return NULL; 1004 } 1005#endif /* ALIGNED_POINTER */ 1006 if (llc != NULL) { 1007 eh = mtod(m, struct ether_header *); 1008 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 1009 } 1010 return m; 1011#undef WDIR 1012} 1013 1014/* 1015 * Return non-zero if the unicast mesh data frame should be processed 1016 * locally. Frames that are not proxy'd have our address, otherwise 1017 * we need to consult the routing table to look for a proxy entry. 1018 */ 1019static __inline int 1020mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 1021 const struct ieee80211_meshcntl *mc) 1022{ 1023 int ae = mc->mc_flags & 3; 1024 1025 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1026 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1027 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1028 if (ae == 2) { /* ucast w/ proxy */ 1029 const struct ieee80211_meshcntl_ae10 *mc10 = 1030 (const struct ieee80211_meshcntl_ae10 *) mc; 1031 struct ieee80211_mesh_route *rt = 1032 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1033 /* check for proxy route to ourself */ 1034 return (rt != NULL && 1035 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1036 } else /* ucast w/o proxy */ 1037 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1038} 1039 1040static int 1041mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1042{ 1043#define HAS_SEQ(type) ((type & 0x4) == 0) 1044 struct ieee80211vap *vap = ni->ni_vap; 1045 struct ieee80211com *ic = ni->ni_ic; 1046 struct ifnet *ifp = vap->iv_ifp; 1047 struct ieee80211_frame *wh; 1048 const struct ieee80211_meshcntl *mc; 1049 int hdrspace, meshdrlen, need_tap; 1050 uint8_t dir, type, subtype, qos; 1051 uint32_t seq; 1052 uint8_t *addr; 1053 ieee80211_seq rxseq; 1054 1055 KASSERT(ni != NULL, ("null node")); 1056 ni->ni_inact = ni->ni_inact_reload; 1057 1058 need_tap = 1; /* mbuf need to be tapped. */ 1059 type = -1; /* undefined */ 1060 1061 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1062 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1063 ni->ni_macaddr, NULL, 1064 "too short (1): len %u", m->m_pkthdr.len); 1065 vap->iv_stats.is_rx_tooshort++; 1066 goto out; 1067 } 1068 /* 1069 * Bit of a cheat here, we use a pointer for a 3-address 1070 * frame format but don't reference fields past outside 1071 * ieee80211_frame_min w/o first validating the data is 1072 * present. 1073 */ 1074 wh = mtod(m, struct ieee80211_frame *); 1075 1076 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1077 IEEE80211_FC0_VERSION_0) { 1078 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1079 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1080 vap->iv_stats.is_rx_badversion++; 1081 goto err; 1082 } 1083 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1084 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1085 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1086 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1087 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1088 ni->ni_noise = nf; 1089 if (HAS_SEQ(type)) { 1090 uint8_t tid = ieee80211_gettid(wh); 1091 1092 if (IEEE80211_QOS_HAS_SEQ(wh) && 1093 TID_TO_WME_AC(tid) >= WME_AC_VI) 1094 ic->ic_wme.wme_hipri_traffic++; 1095 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1096 if (! ieee80211_check_rxseq(ni, wh)) { 1097 /* duplicate, discard */ 1098 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1099 wh->i_addr1, "duplicate", 1100 "seqno <%u,%u> fragno <%u,%u> tid %u", 1101 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1102 ni->ni_rxseqs[tid] >> 1103 IEEE80211_SEQ_SEQ_SHIFT, 1104 rxseq & IEEE80211_SEQ_FRAG_MASK, 1105 ni->ni_rxseqs[tid] & 1106 IEEE80211_SEQ_FRAG_MASK, 1107 tid); 1108 vap->iv_stats.is_rx_dup++; 1109 IEEE80211_NODE_STAT(ni, rx_dup); 1110 goto out; 1111 } 1112 ni->ni_rxseqs[tid] = rxseq; 1113 } 1114 } 1115#ifdef IEEE80211_DEBUG 1116 /* 1117 * It's easier, but too expensive, to simulate different mesh 1118 * topologies by consulting the ACL policy very early, so do this 1119 * only under DEBUG. 1120 * 1121 * NB: this check is also done upon peering link initiation. 1122 */ 1123 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1124 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1125 wh, NULL, "%s", "disallowed by ACL"); 1126 vap->iv_stats.is_rx_acl++; 1127 goto out; 1128 } 1129#endif 1130 switch (type) { 1131 case IEEE80211_FC0_TYPE_DATA: 1132 if (ni == vap->iv_bss) 1133 goto out; 1134 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1135 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1136 ni->ni_macaddr, NULL, 1137 "peer link not yet established (%d)", 1138 ni->ni_mlstate); 1139 vap->iv_stats.is_mesh_nolink++; 1140 goto out; 1141 } 1142 if (dir != IEEE80211_FC1_DIR_FROMDS && 1143 dir != IEEE80211_FC1_DIR_DSTODS) { 1144 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1145 wh, "data", "incorrect dir 0x%x", dir); 1146 vap->iv_stats.is_rx_wrongdir++; 1147 goto err; 1148 } 1149 /* pull up enough to get to the mesh control */ 1150 hdrspace = ieee80211_hdrspace(ic, wh); 1151 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1152 (m = m_pullup(m, hdrspace + 1153 sizeof(struct ieee80211_meshcntl))) == NULL) { 1154 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1155 ni->ni_macaddr, NULL, 1156 "data too short: expecting %u", hdrspace); 1157 vap->iv_stats.is_rx_tooshort++; 1158 goto out; /* XXX */ 1159 } 1160 /* 1161 * Now calculate the full extent of the headers. Note 1162 * mesh_decap will pull up anything we didn't get 1163 * above when it strips the 802.11 headers. 1164 */ 1165 mc = (const struct ieee80211_meshcntl *) 1166 (mtod(m, const uint8_t *) + hdrspace); 1167 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1168 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1169 hdrspace += meshdrlen; 1170 seq = LE_READ_4(mc->mc_seq); 1171 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1172 addr = wh->i_addr3; 1173 else 1174 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1175 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1176 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1177 addr, "data", "%s", "not to me"); 1178 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1179 goto out; 1180 } 1181 if (mesh_checkpseq(vap, addr, seq) != 0) { 1182 vap->iv_stats.is_rx_dup++; 1183 goto out; 1184 } 1185 1186 /* 1187 * Potentially forward packet. See table s36 (p140) 1188 * for the rules. XXX tap fwd'd packets not for us? 1189 */ 1190 if (dir == IEEE80211_FC1_DIR_FROMDS || 1191 !mesh_isucastforme(vap, wh, mc)) { 1192 mesh_forward(vap, m, mc); 1193 if (dir == IEEE80211_FC1_DIR_DSTODS) 1194 goto out; 1195 /* NB: fall thru to deliver mcast frames locally */ 1196 } 1197 1198 /* 1199 * Save QoS bits for use below--before we strip the header. 1200 */ 1201 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1202 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1203 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1204 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1205 } else 1206 qos = 0; 1207 /* 1208 * Next up, any fragmentation. 1209 */ 1210 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1211 m = ieee80211_defrag(ni, m, hdrspace); 1212 if (m == NULL) { 1213 /* Fragment dropped or frame not complete yet */ 1214 goto out; 1215 } 1216 } 1217 wh = NULL; /* no longer valid, catch any uses */ 1218 1219 if (ieee80211_radiotap_active_vap(vap)) 1220 ieee80211_radiotap_rx(vap, m); 1221 need_tap = 0; 1222 1223 /* 1224 * Finally, strip the 802.11 header. 1225 */ 1226 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1227 if (m == NULL) { 1228 /* XXX mask bit to check for both */ 1229 /* don't count Null data frames as errors */ 1230 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1231 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1232 goto out; 1233 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1234 ni->ni_macaddr, "data", "%s", "decap error"); 1235 vap->iv_stats.is_rx_decap++; 1236 IEEE80211_NODE_STAT(ni, rx_decap); 1237 goto err; 1238 } 1239 if (qos & IEEE80211_QOS_AMSDU) { 1240 m = ieee80211_decap_amsdu(ni, m); 1241 if (m == NULL) 1242 return IEEE80211_FC0_TYPE_DATA; 1243 } 1244 ieee80211_deliver_data(vap, ni, m); 1245 return type; 1246 case IEEE80211_FC0_TYPE_MGT: 1247 vap->iv_stats.is_rx_mgmt++; 1248 IEEE80211_NODE_STAT(ni, rx_mgmt); 1249 if (dir != IEEE80211_FC1_DIR_NODS) { 1250 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1251 wh, "mgt", "incorrect dir 0x%x", dir); 1252 vap->iv_stats.is_rx_wrongdir++; 1253 goto err; 1254 } 1255 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1256 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1257 ni->ni_macaddr, "mgt", "too short: len %u", 1258 m->m_pkthdr.len); 1259 vap->iv_stats.is_rx_tooshort++; 1260 goto out; 1261 } 1262#ifdef IEEE80211_DEBUG 1263 if ((ieee80211_msg_debug(vap) && 1264 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1265 ieee80211_msg_dumppkts(vap)) { 1266 if_printf(ifp, "received %s from %s rssi %d\n", 1267 ieee80211_mgt_subtype_name[subtype >> 1268 IEEE80211_FC0_SUBTYPE_SHIFT], 1269 ether_sprintf(wh->i_addr2), rssi); 1270 } 1271#endif 1272 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1273 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1274 wh, NULL, "%s", "WEP set but not permitted"); 1275 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1276 goto out; 1277 } 1278 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1279 goto out; 1280 case IEEE80211_FC0_TYPE_CTL: 1281 vap->iv_stats.is_rx_ctl++; 1282 IEEE80211_NODE_STAT(ni, rx_ctrl); 1283 goto out; 1284 default: 1285 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1286 wh, "bad", "frame type 0x%x", type); 1287 /* should not come here */ 1288 break; 1289 } 1290err: 1291 ifp->if_ierrors++; 1292out: 1293 if (m != NULL) { 1294 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1295 ieee80211_radiotap_rx(vap, m); 1296 m_freem(m); 1297 } 1298 return type; 1299} 1300 1301static void 1302mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1303 int rssi, int nf) 1304{ 1305 struct ieee80211vap *vap = ni->ni_vap; 1306 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1307 struct ieee80211com *ic = ni->ni_ic; 1308 struct ieee80211_frame *wh; 1309 uint8_t *frm, *efrm; 1310 1311 wh = mtod(m0, struct ieee80211_frame *); 1312 frm = (uint8_t *)&wh[1]; 1313 efrm = mtod(m0, uint8_t *) + m0->m_len; 1314 switch (subtype) { 1315 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1316 case IEEE80211_FC0_SUBTYPE_BEACON: 1317 { 1318 struct ieee80211_scanparams scan; 1319 /* 1320 * We process beacon/probe response 1321 * frames to discover neighbors. 1322 */ 1323 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1324 return; 1325 /* 1326 * Count frame now that we know it's to be processed. 1327 */ 1328 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1329 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1330 IEEE80211_NODE_STAT(ni, rx_beacons); 1331 } else 1332 IEEE80211_NODE_STAT(ni, rx_proberesp); 1333 /* 1334 * If scanning, just pass information to the scan module. 1335 */ 1336 if (ic->ic_flags & IEEE80211_F_SCAN) { 1337 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1338 /* 1339 * Actively scanning a channel marked passive; 1340 * send a probe request now that we know there 1341 * is 802.11 traffic present. 1342 * 1343 * XXX check if the beacon we recv'd gives 1344 * us what we need and suppress the probe req 1345 */ 1346 ieee80211_probe_curchan(vap, 1); 1347 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1348 } 1349 ieee80211_add_scan(vap, &scan, wh, 1350 subtype, rssi, nf); 1351 return; 1352 } 1353 1354 /* The rest of this code assumes we are running */ 1355 if (vap->iv_state != IEEE80211_S_RUN) 1356 return; 1357 /* 1358 * Ignore non-mesh STAs. 1359 */ 1360 if ((scan.capinfo & 1361 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1362 scan.meshid == NULL || scan.meshconf == NULL) { 1363 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1364 wh, "beacon", "%s", "not a mesh sta"); 1365 vap->iv_stats.is_mesh_wrongmesh++; 1366 return; 1367 } 1368 /* 1369 * Ignore STAs for other mesh networks. 1370 */ 1371 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1372 mesh_verify_meshconf(vap, scan.meshconf)) { 1373 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1374 wh, "beacon", "%s", "not for our mesh"); 1375 vap->iv_stats.is_mesh_wrongmesh++; 1376 return; 1377 } 1378 /* 1379 * Peer only based on the current ACL policy. 1380 */ 1381 if (vap->iv_acl != NULL && 1382 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1383 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1384 wh, NULL, "%s", "disallowed by ACL"); 1385 vap->iv_stats.is_rx_acl++; 1386 return; 1387 } 1388 /* 1389 * Do neighbor discovery. 1390 */ 1391 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1392 /* 1393 * Create a new entry in the neighbor table. 1394 */ 1395 ni = ieee80211_add_neighbor(vap, wh, &scan); 1396 } 1397 /* 1398 * Automatically peer with discovered nodes if possible. 1399 * XXX backoff on repeated failure 1400 */ 1401 if (ni != vap->iv_bss && 1402 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1403 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1404 uint16_t args[1]; 1405 1406 ni->ni_mlpid = mesh_generateid(vap); 1407 if (ni->ni_mlpid == 0) 1408 return; 1409 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1410 args[0] = ni->ni_mlpid; 1411 ieee80211_send_action(ni, 1412 IEEE80211_ACTION_CAT_MESHPEERING, 1413 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1414 ni->ni_mlrcnt = 0; 1415 mesh_peer_timeout_setup(ni); 1416 } 1417 break; 1418 } 1419 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1420 { 1421 uint8_t *ssid, *meshid, *rates, *xrates; 1422 uint8_t *sfrm; 1423 1424 if (vap->iv_state != IEEE80211_S_RUN) { 1425 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1426 wh, NULL, "wrong state %s", 1427 ieee80211_state_name[vap->iv_state]); 1428 vap->iv_stats.is_rx_mgtdiscard++; 1429 return; 1430 } 1431 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1432 /* frame must be directed */ 1433 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1434 wh, NULL, "%s", "not unicast"); 1435 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1436 return; 1437 } 1438 /* 1439 * prreq frame format 1440 * [tlv] ssid 1441 * [tlv] supported rates 1442 * [tlv] extended supported rates 1443 * [tlv] mesh id 1444 */ 1445 ssid = meshid = rates = xrates = NULL; 1446 sfrm = frm; 1447 while (efrm - frm > 1) { 1448 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1449 switch (*frm) { 1450 case IEEE80211_ELEMID_SSID: 1451 ssid = frm; 1452 break; 1453 case IEEE80211_ELEMID_RATES: 1454 rates = frm; 1455 break; 1456 case IEEE80211_ELEMID_XRATES: 1457 xrates = frm; 1458 break; 1459 case IEEE80211_ELEMID_MESHID: 1460 meshid = frm; 1461 break; 1462 } 1463 frm += frm[1] + 2; 1464 } 1465 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1466 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1467 if (xrates != NULL) 1468 IEEE80211_VERIFY_ELEMENT(xrates, 1469 IEEE80211_RATE_MAXSIZE - rates[1], return); 1470 if (meshid != NULL) { 1471 IEEE80211_VERIFY_ELEMENT(meshid, 1472 IEEE80211_MESHID_LEN, return); 1473 /* NB: meshid, not ssid */ 1474 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1475 } 1476 1477 /* XXX find a better class or define it's own */ 1478 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1479 "%s", "recv probe req"); 1480 /* 1481 * Some legacy 11b clients cannot hack a complete 1482 * probe response frame. When the request includes 1483 * only a bare-bones rate set, communicate this to 1484 * the transmit side. 1485 */ 1486 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1487 break; 1488 } 1489 1490 case IEEE80211_FC0_SUBTYPE_ACTION: 1491 case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: 1492 if (ni == vap->iv_bss) { 1493 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1494 wh, NULL, "%s", "unknown node"); 1495 vap->iv_stats.is_rx_mgtdiscard++; 1496 } else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1497 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1498 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1499 wh, NULL, "%s", "not for us"); 1500 vap->iv_stats.is_rx_mgtdiscard++; 1501 } else if (vap->iv_state != IEEE80211_S_RUN) { 1502 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1503 wh, NULL, "wrong state %s", 1504 ieee80211_state_name[vap->iv_state]); 1505 vap->iv_stats.is_rx_mgtdiscard++; 1506 } else { 1507 if (ieee80211_parse_action(ni, m0) == 0) 1508 (void)ic->ic_recv_action(ni, wh, frm, efrm); 1509 } 1510 break; 1511 1512 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1513 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1514 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1515 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1516 case IEEE80211_FC0_SUBTYPE_ATIM: 1517 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1518 case IEEE80211_FC0_SUBTYPE_AUTH: 1519 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1520 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1521 wh, NULL, "%s", "not handled"); 1522 vap->iv_stats.is_rx_mgtdiscard++; 1523 break; 1524 1525 default: 1526 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1527 wh, "mgt", "subtype 0x%x not handled", subtype); 1528 vap->iv_stats.is_rx_badsubtype++; 1529 break; 1530 } 1531} 1532 1533static void 1534mesh_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 1535{ 1536 1537 switch (subtype) { 1538 case IEEE80211_FC0_SUBTYPE_BAR: 1539 ieee80211_recv_bar(ni, m); 1540 break; 1541 } 1542} 1543 1544/* 1545 * Parse meshpeering action ie's for open+confirm frames; the 1546 * important bits are returned in the supplied structure. 1547 */ 1548static const struct ieee80211_meshpeer_ie * 1549mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1550 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1551 const uint8_t *frm, const uint8_t *efrm, 1552 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1553{ 1554 struct ieee80211vap *vap = ni->ni_vap; 1555 const struct ieee80211_meshpeer_ie *mpie; 1556 const uint8_t *meshid, *meshconf, *meshpeer; 1557 1558 meshid = meshconf = meshpeer = NULL; 1559 while (efrm - frm > 1) { 1560 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1561 switch (*frm) { 1562 case IEEE80211_ELEMID_MESHID: 1563 meshid = frm; 1564 break; 1565 case IEEE80211_ELEMID_MESHCONF: 1566 meshconf = frm; 1567 break; 1568 case IEEE80211_ELEMID_MESHPEER: 1569 meshpeer = frm; 1570 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1571 memset(mp, 0, sizeof(*mp)); 1572 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1573 /* NB: peer link ID is optional on these frames */ 1574 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1575 mpie->peer_len == 8) { 1576 mp->peer_linkid = 0; 1577 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1578 } else { 1579 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1580 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1581 } 1582 break; 1583 } 1584 frm += frm[1] + 2; 1585 } 1586 1587 /* 1588 * Verify the contents of the frame. Action frames with 1589 * close subtype don't have a Mesh Configuration IE. 1590 * If if fails validation, close the peer link. 1591 */ 1592 KASSERT(meshpeer != NULL && 1593 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1594 ("parsing close action")); 1595 1596 if (mesh_verify_meshid(vap, meshid) || 1597 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1598 mesh_verify_meshconf(vap, meshconf)) { 1599 uint16_t args[3]; 1600 1601 IEEE80211_DISCARD(vap, 1602 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1603 wh, NULL, "%s", "not for our mesh"); 1604 vap->iv_stats.is_rx_mgtdiscard++; 1605 switch (ni->ni_mlstate) { 1606 case IEEE80211_NODE_MESH_IDLE: 1607 case IEEE80211_NODE_MESH_ESTABLISHED: 1608 case IEEE80211_NODE_MESH_HOLDING: 1609 /* ignore */ 1610 break; 1611 case IEEE80211_NODE_MESH_OPENSNT: 1612 case IEEE80211_NODE_MESH_OPENRCV: 1613 case IEEE80211_NODE_MESH_CONFIRMRCV: 1614 args[0] = ni->ni_mlpid; 1615 args[1] = ni->ni_mllid; 1616 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1617 ieee80211_send_action(ni, 1618 IEEE80211_ACTION_CAT_MESHPEERING, 1619 IEEE80211_ACTION_MESHPEERING_CLOSE, 1620 args); 1621 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1622 mesh_peer_timeout_setup(ni); 1623 break; 1624 } 1625 return NULL; 1626 } 1627 return (const struct ieee80211_meshpeer_ie *) mp; 1628} 1629 1630static int 1631mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1632 const struct ieee80211_frame *wh, 1633 const uint8_t *frm, const uint8_t *efrm) 1634{ 1635 struct ieee80211vap *vap = ni->ni_vap; 1636 struct ieee80211_meshpeer_ie ie; 1637 const struct ieee80211_meshpeer_ie *meshpeer; 1638 uint16_t args[3]; 1639 1640 /* +2+2 for action + code + capabilites */ 1641 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1642 IEEE80211_ACTION_MESHPEERING_OPEN); 1643 if (meshpeer == NULL) { 1644 return 0; 1645 } 1646 1647 /* XXX move up */ 1648 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1649 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1650 1651 switch (ni->ni_mlstate) { 1652 case IEEE80211_NODE_MESH_IDLE: 1653 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1654 ni->ni_mllid = meshpeer->peer_llinkid; 1655 ni->ni_mlpid = mesh_generateid(vap); 1656 if (ni->ni_mlpid == 0) 1657 return 0; /* XXX */ 1658 args[0] = ni->ni_mlpid; 1659 /* Announce we're open too... */ 1660 ieee80211_send_action(ni, 1661 IEEE80211_ACTION_CAT_MESHPEERING, 1662 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1663 /* ...and confirm the link. */ 1664 args[0] = ni->ni_mlpid; 1665 args[1] = ni->ni_mllid; 1666 ieee80211_send_action(ni, 1667 IEEE80211_ACTION_CAT_MESHPEERING, 1668 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1669 args); 1670 mesh_peer_timeout_setup(ni); 1671 break; 1672 case IEEE80211_NODE_MESH_OPENRCV: 1673 /* Wrong Link ID */ 1674 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1675 args[0] = ni->ni_mllid; 1676 args[1] = ni->ni_mlpid; 1677 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1678 ieee80211_send_action(ni, 1679 IEEE80211_ACTION_CAT_MESHPEERING, 1680 IEEE80211_ACTION_MESHPEERING_CLOSE, 1681 args); 1682 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1683 mesh_peer_timeout_setup(ni); 1684 break; 1685 } 1686 /* Duplicate open, confirm again. */ 1687 args[0] = ni->ni_mlpid; 1688 args[1] = ni->ni_mllid; 1689 ieee80211_send_action(ni, 1690 IEEE80211_ACTION_CAT_MESHPEERING, 1691 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1692 args); 1693 break; 1694 case IEEE80211_NODE_MESH_OPENSNT: 1695 ni->ni_mllid = meshpeer->peer_llinkid; 1696 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1697 args[0] = ni->ni_mlpid; 1698 args[1] = ni->ni_mllid; 1699 ieee80211_send_action(ni, 1700 IEEE80211_ACTION_CAT_MESHPEERING, 1701 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1702 args); 1703 /* NB: don't setup/clear any timeout */ 1704 break; 1705 case IEEE80211_NODE_MESH_CONFIRMRCV: 1706 if (ni->ni_mlpid != meshpeer->peer_linkid || 1707 ni->ni_mllid != meshpeer->peer_llinkid) { 1708 args[0] = ni->ni_mlpid; 1709 args[1] = ni->ni_mllid; 1710 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1711 ieee80211_send_action(ni, 1712 IEEE80211_ACTION_CAT_MESHPEERING, 1713 IEEE80211_ACTION_MESHPEERING_CLOSE, 1714 args); 1715 mesh_linkchange(ni, 1716 IEEE80211_NODE_MESH_HOLDING); 1717 mesh_peer_timeout_setup(ni); 1718 break; 1719 } 1720 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1721 ni->ni_mllid = meshpeer->peer_llinkid; 1722 args[0] = ni->ni_mlpid; 1723 args[1] = ni->ni_mllid; 1724 ieee80211_send_action(ni, 1725 IEEE80211_ACTION_CAT_MESHPEERING, 1726 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1727 args); 1728 mesh_peer_timeout_stop(ni); 1729 break; 1730 case IEEE80211_NODE_MESH_ESTABLISHED: 1731 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1732 args[0] = ni->ni_mllid; 1733 args[1] = ni->ni_mlpid; 1734 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1735 ieee80211_send_action(ni, 1736 IEEE80211_ACTION_CAT_MESHPEERING, 1737 IEEE80211_ACTION_MESHPEERING_CLOSE, 1738 args); 1739 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1740 mesh_peer_timeout_setup(ni); 1741 break; 1742 } 1743 args[0] = ni->ni_mlpid; 1744 args[1] = ni->ni_mllid; 1745 ieee80211_send_action(ni, 1746 IEEE80211_ACTION_CAT_MESHPEERING, 1747 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1748 args); 1749 break; 1750 case IEEE80211_NODE_MESH_HOLDING: 1751 args[0] = ni->ni_mlpid; 1752 args[1] = meshpeer->peer_llinkid; 1753 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1754 ieee80211_send_action(ni, 1755 IEEE80211_ACTION_CAT_MESHPEERING, 1756 IEEE80211_ACTION_MESHPEERING_CLOSE, 1757 args); 1758 break; 1759 } 1760 return 0; 1761} 1762 1763static int 1764mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1765 const struct ieee80211_frame *wh, 1766 const uint8_t *frm, const uint8_t *efrm) 1767{ 1768 struct ieee80211vap *vap = ni->ni_vap; 1769 struct ieee80211_meshpeer_ie ie; 1770 const struct ieee80211_meshpeer_ie *meshpeer; 1771 uint16_t args[3]; 1772 1773 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1774 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1775 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1776 if (meshpeer == NULL) { 1777 return 0; 1778 } 1779 1780 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1781 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1782 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1783 1784 switch (ni->ni_mlstate) { 1785 case IEEE80211_NODE_MESH_OPENRCV: 1786 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1787 mesh_peer_timeout_stop(ni); 1788 break; 1789 case IEEE80211_NODE_MESH_OPENSNT: 1790 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 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_MESHPEERING, 1798 IEEE80211_ACTION_MESHPEERING_CLOSE, 1799 args); 1800 break; 1801 case IEEE80211_NODE_MESH_CONFIRMRCV: 1802 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1803 args[0] = ni->ni_mlpid; 1804 args[1] = ni->ni_mllid; 1805 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1806 ieee80211_send_action(ni, 1807 IEEE80211_ACTION_CAT_MESHPEERING, 1808 IEEE80211_ACTION_MESHPEERING_CLOSE, 1809 args); 1810 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1811 mesh_peer_timeout_setup(ni); 1812 } 1813 break; 1814 default: 1815 IEEE80211_DISCARD(vap, 1816 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1817 wh, NULL, "received confirm in invalid state %d", 1818 ni->ni_mlstate); 1819 vap->iv_stats.is_rx_mgtdiscard++; 1820 break; 1821 } 1822 return 0; 1823} 1824 1825static int 1826mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1827 const struct ieee80211_frame *wh, 1828 const uint8_t *frm, const uint8_t *efrm) 1829{ 1830 uint16_t args[3]; 1831 1832 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1833 ni, "%s", "recv PEER CLOSE"); 1834 1835 switch (ni->ni_mlstate) { 1836 case IEEE80211_NODE_MESH_IDLE: 1837 /* ignore */ 1838 break; 1839 case IEEE80211_NODE_MESH_OPENRCV: 1840 case IEEE80211_NODE_MESH_OPENSNT: 1841 case IEEE80211_NODE_MESH_CONFIRMRCV: 1842 case IEEE80211_NODE_MESH_ESTABLISHED: 1843 args[0] = ni->ni_mlpid; 1844 args[1] = ni->ni_mllid; 1845 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1846 ieee80211_send_action(ni, 1847 IEEE80211_ACTION_CAT_MESHPEERING, 1848 IEEE80211_ACTION_MESHPEERING_CLOSE, 1849 args); 1850 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1851 mesh_peer_timeout_setup(ni); 1852 break; 1853 case IEEE80211_NODE_MESH_HOLDING: 1854 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1855 mesh_peer_timeout_setup(ni); 1856 break; 1857 } 1858 return 0; 1859} 1860 1861/* 1862 * Link Metric handling. 1863 */ 1864static int 1865mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1866 const struct ieee80211_frame *wh, 1867 const uint8_t *frm, const uint8_t *efrm) 1868{ 1869 uint32_t metric; 1870 1871 metric = mesh_airtime_calc(ni); 1872 ieee80211_send_action(ni, 1873 IEEE80211_ACTION_CAT_MESHLMETRIC, 1874 IEEE80211_ACTION_MESHLMETRIC_REP, 1875 &metric); 1876 return 0; 1877} 1878 1879static int 1880mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1881 const struct ieee80211_frame *wh, 1882 const uint8_t *frm, const uint8_t *efrm) 1883{ 1884 return 0; 1885} 1886 1887static int 1888mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1889{ 1890 struct ieee80211_bpf_params params; 1891 1892 memset(¶ms, 0, sizeof(params)); 1893 params.ibp_pri = WME_AC_VO; 1894 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1895 /* XXX ucast/mcast */ 1896 params.ibp_try0 = ni->ni_txparms->maxretry; 1897 params.ibp_power = ni->ni_txpower; 1898 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1899 ¶ms); 1900} 1901 1902#define ADDSHORT(frm, v) do { \ 1903 frm[0] = (v) & 0xff; \ 1904 frm[1] = (v) >> 8; \ 1905 frm += 2; \ 1906} while (0) 1907#define ADDWORD(frm, v) do { \ 1908 frm[0] = (v) & 0xff; \ 1909 frm[1] = ((v) >> 8) & 0xff; \ 1910 frm[2] = ((v) >> 16) & 0xff; \ 1911 frm[3] = ((v) >> 24) & 0xff; \ 1912 frm += 4; \ 1913} while (0) 1914 1915static int 1916mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1917 int category, int action, void *args0) 1918{ 1919 struct ieee80211vap *vap = ni->ni_vap; 1920 struct ieee80211com *ic = ni->ni_ic; 1921 uint16_t *args = args0; 1922 const struct ieee80211_rateset *rs; 1923 struct mbuf *m; 1924 uint8_t *frm; 1925 1926 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1927 "send PEER OPEN action: localid 0x%x", args[0]); 1928 1929 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1930 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1931 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1932 ieee80211_ref_node(ni); 1933 1934 m = ieee80211_getmgtframe(&frm, 1935 ic->ic_headroom + sizeof(struct ieee80211_frame), 1936 sizeof(uint16_t) /* action+category */ 1937 + sizeof(uint16_t) /* capabilites */ 1938 + 2 + IEEE80211_RATE_SIZE 1939 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1940 + 2 + IEEE80211_MESHID_LEN 1941 + sizeof(struct ieee80211_meshconf_ie) 1942 + sizeof(struct ieee80211_meshpeer_ie) 1943 ); 1944 if (m != NULL) { 1945 /* 1946 * mesh peer open action frame format: 1947 * [1] category 1948 * [1] action 1949 * [2] capabilities 1950 * [tlv] rates 1951 * [tlv] xrates 1952 * [tlv] mesh id 1953 * [tlv] mesh conf 1954 * [tlv] mesh peer link mgmt 1955 */ 1956 *frm++ = category; 1957 *frm++ = action; 1958 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1959 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1960 frm = ieee80211_add_rates(frm, rs); 1961 frm = ieee80211_add_xrates(frm, rs); 1962 frm = ieee80211_add_meshid(frm, vap); 1963 frm = ieee80211_add_meshconf(frm, vap); 1964 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1965 args[0], 0, 0); 1966 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1967 return mesh_send_action(ni, m); 1968 } else { 1969 vap->iv_stats.is_tx_nobuf++; 1970 ieee80211_free_node(ni); 1971 return ENOMEM; 1972 } 1973} 1974 1975static int 1976mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1977 int category, int action, void *args0) 1978{ 1979 struct ieee80211vap *vap = ni->ni_vap; 1980 struct ieee80211com *ic = ni->ni_ic; 1981 uint16_t *args = args0; 1982 const struct ieee80211_rateset *rs; 1983 struct mbuf *m; 1984 uint8_t *frm; 1985 1986 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1987 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1988 args[0], args[1]); 1989 1990 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1991 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1992 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1993 ieee80211_ref_node(ni); 1994 1995 m = ieee80211_getmgtframe(&frm, 1996 ic->ic_headroom + sizeof(struct ieee80211_frame), 1997 sizeof(uint16_t) /* action+category */ 1998 + sizeof(uint16_t) /* capabilites */ 1999 + sizeof(uint16_t) /* status code */ 2000 + sizeof(uint16_t) /* AID */ 2001 + 2 + IEEE80211_RATE_SIZE 2002 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 2003 + 2 + IEEE80211_MESHID_LEN 2004 + sizeof(struct ieee80211_meshconf_ie) 2005 + sizeof(struct ieee80211_meshpeer_ie) 2006 ); 2007 if (m != NULL) { 2008 /* 2009 * mesh peer confirm action frame format: 2010 * [1] category 2011 * [1] action 2012 * [2] capabilities 2013 * [2] status code 2014 * [2] association id (peer ID) 2015 * [tlv] rates 2016 * [tlv] xrates 2017 * [tlv] mesh id 2018 * [tlv] mesh conf 2019 * [tlv] mesh peer link mgmt 2020 */ 2021 *frm++ = category; 2022 *frm++ = action; 2023 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2024 ADDSHORT(frm, 0); /* status code */ 2025 ADDSHORT(frm, args[1]); /* AID */ 2026 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2027 frm = ieee80211_add_rates(frm, rs); 2028 frm = ieee80211_add_xrates(frm, rs); 2029 frm = ieee80211_add_meshid(frm, vap); 2030 frm = ieee80211_add_meshconf(frm, vap); 2031 frm = ieee80211_add_meshpeer(frm, 2032 IEEE80211_MESH_PEER_LINK_CONFIRM, 2033 args[0], args[1], 0); 2034 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2035 return mesh_send_action(ni, m); 2036 } else { 2037 vap->iv_stats.is_tx_nobuf++; 2038 ieee80211_free_node(ni); 2039 return ENOMEM; 2040 } 2041} 2042 2043static int 2044mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2045 int category, int action, void *args0) 2046{ 2047 struct ieee80211vap *vap = ni->ni_vap; 2048 struct ieee80211com *ic = ni->ni_ic; 2049 uint16_t *args = args0; 2050 struct mbuf *m; 2051 uint8_t *frm; 2052 2053 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2054 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2055 args[0], args[1], args[2]); 2056 2057 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2058 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2059 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2060 ieee80211_ref_node(ni); 2061 2062 m = ieee80211_getmgtframe(&frm, 2063 ic->ic_headroom + sizeof(struct ieee80211_frame), 2064 sizeof(uint16_t) /* action+category */ 2065 + sizeof(uint16_t) /* reason code */ 2066 + 2 + IEEE80211_MESHID_LEN 2067 + sizeof(struct ieee80211_meshpeer_ie) 2068 ); 2069 if (m != NULL) { 2070 /* 2071 * mesh peer close action frame format: 2072 * [1] category 2073 * [1] action 2074 * [2] reason code 2075 * [tlv] mesh id 2076 * [tlv] mesh peer link mgmt 2077 */ 2078 *frm++ = category; 2079 *frm++ = action; 2080 ADDSHORT(frm, args[2]); /* reason code */ 2081 frm = ieee80211_add_meshid(frm, vap); 2082 frm = ieee80211_add_meshpeer(frm, 2083 IEEE80211_MESH_PEER_LINK_CLOSE, 2084 args[0], args[1], args[2]); 2085 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2086 return mesh_send_action(ni, m); 2087 } else { 2088 vap->iv_stats.is_tx_nobuf++; 2089 ieee80211_free_node(ni); 2090 return ENOMEM; 2091 } 2092} 2093 2094static int 2095mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2096 int category, int action, void *arg0) 2097{ 2098 struct ieee80211vap *vap = ni->ni_vap; 2099 struct ieee80211com *ic = ni->ni_ic; 2100 struct mbuf *m; 2101 uint8_t *frm; 2102 2103 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2104 "%s", "send LINK METRIC REQUEST action"); 2105 2106 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2107 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2108 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2109 ieee80211_ref_node(ni); 2110 2111 m = ieee80211_getmgtframe(&frm, 2112 ic->ic_headroom + sizeof(struct ieee80211_frame), 2113 sizeof(uint16_t) /* action+category */ 2114 ); 2115 if (m != NULL) { 2116 /* 2117 * mesh link metric request 2118 * [1] category 2119 * [1] action 2120 */ 2121 *frm++ = category; 2122 *frm++ = action; 2123 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2124 return mesh_send_action(ni, m); 2125 } else { 2126 vap->iv_stats.is_tx_nobuf++; 2127 ieee80211_free_node(ni); 2128 return ENOMEM; 2129 } 2130} 2131 2132static int 2133mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2134 int category, int action, void *args0) 2135{ 2136 struct ieee80211vap *vap = ni->ni_vap; 2137 struct ieee80211com *ic = ni->ni_ic; 2138 uint32_t *metric = args0; 2139 struct mbuf *m; 2140 uint8_t *frm; 2141 2142 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2143 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2144 2145 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2146 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2147 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2148 ieee80211_ref_node(ni); 2149 2150 m = ieee80211_getmgtframe(&frm, 2151 ic->ic_headroom + sizeof(struct ieee80211_frame), 2152 sizeof(uint16_t) /* action+category */ 2153 + sizeof(struct ieee80211_meshlmetric_ie) 2154 ); 2155 if (m != NULL) { 2156 /* 2157 * mesh link metric reply 2158 * [1] category 2159 * [1] action 2160 * [tlv] mesh link metric 2161 */ 2162 *frm++ = category; 2163 *frm++ = action; 2164 frm = ieee80211_add_meshlmetric(frm, *metric); 2165 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2166 return mesh_send_action(ni, m); 2167 } else { 2168 vap->iv_stats.is_tx_nobuf++; 2169 ieee80211_free_node(ni); 2170 return ENOMEM; 2171 } 2172} 2173 2174static void 2175mesh_peer_timeout_setup(struct ieee80211_node *ni) 2176{ 2177 switch (ni->ni_mlstate) { 2178 case IEEE80211_NODE_MESH_HOLDING: 2179 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2180 break; 2181 case IEEE80211_NODE_MESH_CONFIRMRCV: 2182 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2183 break; 2184 case IEEE80211_NODE_MESH_IDLE: 2185 ni->ni_mltval = 0; 2186 break; 2187 default: 2188 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2189 break; 2190 } 2191 if (ni->ni_mltval) 2192 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2193 mesh_peer_timeout_cb, ni); 2194} 2195 2196/* 2197 * Same as above but backoffs timer statisically 50%. 2198 */ 2199static void 2200mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2201{ 2202 uint32_t r; 2203 2204 r = arc4random(); 2205 ni->ni_mltval += r % ni->ni_mltval; 2206 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2207 ni); 2208} 2209 2210static __inline void 2211mesh_peer_timeout_stop(struct ieee80211_node *ni) 2212{ 2213 callout_drain(&ni->ni_mltimer); 2214} 2215 2216/* 2217 * Mesh Peer Link Management FSM timeout handling. 2218 */ 2219static void 2220mesh_peer_timeout_cb(void *arg) 2221{ 2222 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2223 uint16_t args[3]; 2224 2225 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2226 ni, "mesh link timeout, state %d, retry counter %d", 2227 ni->ni_mlstate, ni->ni_mlrcnt); 2228 2229 switch (ni->ni_mlstate) { 2230 case IEEE80211_NODE_MESH_IDLE: 2231 case IEEE80211_NODE_MESH_ESTABLISHED: 2232 break; 2233 case IEEE80211_NODE_MESH_OPENSNT: 2234 case IEEE80211_NODE_MESH_OPENRCV: 2235 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2236 args[0] = ni->ni_mlpid; 2237 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2238 ieee80211_send_action(ni, 2239 IEEE80211_ACTION_CAT_MESHPEERING, 2240 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2241 ni->ni_mlrcnt = 0; 2242 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2243 mesh_peer_timeout_setup(ni); 2244 } else { 2245 args[0] = ni->ni_mlpid; 2246 ieee80211_send_action(ni, 2247 IEEE80211_ACTION_CAT_MESHPEERING, 2248 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2249 ni->ni_mlrcnt++; 2250 mesh_peer_timeout_backoff(ni); 2251 } 2252 break; 2253 case IEEE80211_NODE_MESH_CONFIRMRCV: 2254 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2255 args[0] = ni->ni_mlpid; 2256 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2257 ieee80211_send_action(ni, 2258 IEEE80211_ACTION_CAT_MESHPEERING, 2259 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2260 ni->ni_mlrcnt = 0; 2261 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2262 mesh_peer_timeout_setup(ni); 2263 } else { 2264 ni->ni_mlrcnt++; 2265 mesh_peer_timeout_setup(ni); 2266 } 2267 break; 2268 case IEEE80211_NODE_MESH_HOLDING: 2269 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2270 break; 2271 } 2272} 2273 2274static int 2275mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2276{ 2277 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2278 2279 if (ie == NULL || ie[1] != ms->ms_idlen) 2280 return 1; 2281 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2282} 2283 2284/* 2285 * Check if we are using the same algorithms for this mesh. 2286 */ 2287static int 2288mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2289{ 2290 const struct ieee80211_meshconf_ie *meshconf = 2291 (const struct ieee80211_meshconf_ie *) ie; 2292 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2293 uint16_t cap; 2294 2295 if (meshconf == NULL) 2296 return 1; 2297 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2298 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2299 "unknown path selection algorithm: 0x%x\n", 2300 meshconf->conf_pselid); 2301 return 1; 2302 } 2303 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2304 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2305 "unknown path metric algorithm: 0x%x\n", 2306 meshconf->conf_pmetid); 2307 return 1; 2308 } 2309 if (meshconf->conf_ccid != 0) { 2310 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2311 "unknown congestion control algorithm: 0x%x\n", 2312 meshconf->conf_ccid); 2313 return 1; 2314 } 2315 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2316 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2317 "unknown sync algorithm: 0x%x\n", 2318 meshconf->conf_syncid); 2319 return 1; 2320 } 2321 if (meshconf->conf_authid != 0) { 2322 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2323 "unknown auth auth algorithm: 0x%x\n", 2324 meshconf->conf_pselid); 2325 return 1; 2326 } 2327 /* NB: conf_cap is only read correctly here */ 2328 cap = LE_READ_2(&meshconf->conf_cap); 2329 /* Not accepting peers */ 2330 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) { 2331 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2332 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2333 return 1; 2334 } 2335 return 0; 2336} 2337 2338static int 2339mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2340 const uint8_t *ie) 2341{ 2342 const struct ieee80211_meshpeer_ie *meshpeer = 2343 (const struct ieee80211_meshpeer_ie *) ie; 2344 2345 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2346 meshpeer->peer_len > 10) 2347 return 1; 2348 switch (subtype) { 2349 case IEEE80211_MESH_PEER_LINK_OPEN: 2350 if (meshpeer->peer_len != 6) 2351 return 1; 2352 break; 2353 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2354 if (meshpeer->peer_len != 8) 2355 return 1; 2356 break; 2357 case IEEE80211_MESH_PEER_LINK_CLOSE: 2358 if (meshpeer->peer_len < 8) 2359 return 1; 2360 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2361 return 1; 2362 if (meshpeer->peer_rcode == 0) 2363 return 1; 2364 break; 2365 } 2366 return 0; 2367} 2368 2369/* 2370 * Add a Mesh ID IE to a frame. 2371 */ 2372uint8_t * 2373ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2374{ 2375 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2376 2377 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2378 2379 *frm++ = IEEE80211_ELEMID_MESHID; 2380 *frm++ = ms->ms_idlen; 2381 memcpy(frm, ms->ms_id, ms->ms_idlen); 2382 return frm + ms->ms_idlen; 2383} 2384 2385/* 2386 * Add a Mesh Configuration IE to a frame. 2387 * For now just use HWMP routing, Airtime link metric, Null Congestion 2388 * Signaling, Null Sync Protocol and Null Authentication. 2389 */ 2390uint8_t * 2391ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2392{ 2393 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2394 uint16_t caps; 2395 2396 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2397 2398 *frm++ = IEEE80211_ELEMID_MESHCONF; 2399 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2400 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2401 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2402 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2403 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2404 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2405 /* NB: set the number of neighbors before the rest */ 2406 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2407 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2408 *frm |= IEEE80211_MESHCONF_FORM_MP; 2409 frm += 1; 2410 caps = 0; 2411 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2412 caps |= IEEE80211_MESHCONF_CAP_AP; 2413 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2414 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2415 ADDSHORT(frm, caps); 2416 return frm; 2417} 2418 2419/* 2420 * Add a Mesh Peer Management IE to a frame. 2421 */ 2422uint8_t * 2423ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2424 uint16_t peerid, uint16_t reason) 2425{ 2426 /* XXX change for AH */ 2427 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2428 2429 KASSERT(localid != 0, ("localid == 0")); 2430 2431 *frm++ = IEEE80211_ELEMID_MESHPEER; 2432 switch (subtype) { 2433 case IEEE80211_MESH_PEER_LINK_OPEN: 2434 *frm++ = 6; /* length */ 2435 memcpy(frm, meshpeerproto, 4); 2436 frm += 4; 2437 ADDSHORT(frm, localid); /* local ID */ 2438 break; 2439 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2440 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2441 *frm++ = 8; /* length */ 2442 memcpy(frm, meshpeerproto, 4); 2443 frm += 4; 2444 ADDSHORT(frm, localid); /* local ID */ 2445 ADDSHORT(frm, peerid); /* peer ID */ 2446 break; 2447 case IEEE80211_MESH_PEER_LINK_CLOSE: 2448 if (peerid) 2449 *frm++ = 10; /* length */ 2450 else 2451 *frm++ = 8; /* length */ 2452 memcpy(frm, meshpeerproto, 4); 2453 frm += 4; 2454 ADDSHORT(frm, localid); /* local ID */ 2455 if (peerid) 2456 ADDSHORT(frm, peerid); /* peer ID */ 2457 ADDSHORT(frm, reason); 2458 break; 2459 } 2460 return frm; 2461} 2462 2463/* 2464 * Compute an Airtime Link Metric for the link with this node. 2465 * 2466 * Based on Draft 3.0 spec (11B.10, p.149). 2467 */ 2468/* 2469 * Max 802.11s overhead. 2470 */ 2471#define IEEE80211_MESH_MAXOVERHEAD \ 2472 (sizeof(struct ieee80211_qosframe_addr4) \ 2473 + sizeof(struct ieee80211_meshcntl_ae11) \ 2474 + sizeof(struct llc) \ 2475 + IEEE80211_ADDR_LEN \ 2476 + IEEE80211_WEP_IVLEN \ 2477 + IEEE80211_WEP_KIDLEN \ 2478 + IEEE80211_WEP_CRCLEN \ 2479 + IEEE80211_WEP_MICLEN \ 2480 + IEEE80211_CRC_LEN) 2481uint32_t 2482mesh_airtime_calc(struct ieee80211_node *ni) 2483{ 2484#define M_BITS 8 2485#define S_FACTOR (2 * M_BITS) 2486 struct ieee80211com *ic = ni->ni_ic; 2487 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2488 const static int nbits = 8192 << M_BITS; 2489 uint32_t overhead, rate, errrate; 2490 uint64_t res; 2491 2492 /* Time to transmit a frame */ 2493 rate = ni->ni_txrate; 2494 overhead = ieee80211_compute_duration(ic->ic_rt, 2495 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2496 /* Error rate in percentage */ 2497 /* XXX assuming small failures are ok */ 2498 errrate = (((ifp->if_oerrors + 2499 ifp->if_ierrors) / 100) << M_BITS) / 100; 2500 res = (overhead + (nbits / rate)) * 2501 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2502 2503 return (uint32_t)(res >> S_FACTOR); 2504#undef M_BITS 2505#undef S_FACTOR 2506} 2507 2508/* 2509 * Add a Mesh Link Metric report IE to a frame. 2510 */ 2511uint8_t * 2512ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2513{ 2514 *frm++ = IEEE80211_ELEMID_MESHLINK; 2515 *frm++ = 4; 2516 ADDWORD(frm, metric); 2517 return frm; 2518} 2519#undef ADDSHORT 2520#undef ADDWORD 2521 2522/* 2523 * Initialize any mesh-specific node state. 2524 */ 2525void 2526ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2527{ 2528 ni->ni_flags |= IEEE80211_NODE_QOS; 2529 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2530} 2531 2532/* 2533 * Cleanup any mesh-specific node state. 2534 */ 2535void 2536ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2537{ 2538 struct ieee80211vap *vap = ni->ni_vap; 2539 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2540 2541 callout_drain(&ni->ni_mltimer); 2542 /* NB: short-circuit callbacks after mesh_vdetach */ 2543 if (vap->iv_mesh != NULL) 2544 ms->ms_ppath->mpp_peerdown(ni); 2545} 2546 2547void 2548ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2549{ 2550 ni->ni_meshidlen = ie[1]; 2551 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2552} 2553 2554/* 2555 * Setup mesh-specific node state on neighbor discovery. 2556 */ 2557void 2558ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2559 const struct ieee80211_frame *wh, 2560 const struct ieee80211_scanparams *sp) 2561{ 2562 ieee80211_parse_meshid(ni, sp->meshid); 2563} 2564 2565void 2566ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2567 struct ieee80211_beacon_offsets *bo) 2568{ 2569 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2570 2571 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2572 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2573 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2574 } 2575} 2576 2577static int 2578mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2579{ 2580 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2581 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2582 struct ieee80211_mesh_route *rt; 2583 struct ieee80211req_mesh_route *imr; 2584 size_t len, off; 2585 uint8_t *p; 2586 int error; 2587 2588 if (vap->iv_opmode != IEEE80211_M_MBSS) 2589 return ENOSYS; 2590 2591 error = 0; 2592 switch (ireq->i_type) { 2593 case IEEE80211_IOC_MESH_ID: 2594 ireq->i_len = ms->ms_idlen; 2595 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2596 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2597 break; 2598 case IEEE80211_IOC_MESH_AP: 2599 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2600 break; 2601 case IEEE80211_IOC_MESH_FWRD: 2602 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2603 break; 2604 case IEEE80211_IOC_MESH_TTL: 2605 ireq->i_val = ms->ms_ttl; 2606 break; 2607 case IEEE80211_IOC_MESH_RTCMD: 2608 switch (ireq->i_val) { 2609 case IEEE80211_MESH_RTCMD_LIST: 2610 len = 0; 2611 MESH_RT_LOCK(ms); 2612 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2613 len += sizeof(*imr); 2614 } 2615 MESH_RT_UNLOCK(ms); 2616 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2617 ireq->i_len = len; 2618 return ENOMEM; 2619 } 2620 ireq->i_len = len; 2621 /* XXX M_WAIT? */ 2622 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2623 if (p == NULL) 2624 return ENOMEM; 2625 off = 0; 2626 MESH_RT_LOCK(ms); 2627 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2628 if (off >= len) 2629 break; 2630 imr = (struct ieee80211req_mesh_route *) 2631 (p + off); 2632 imr->imr_flags = rt->rt_flags; 2633 IEEE80211_ADDR_COPY(imr->imr_dest, 2634 rt->rt_dest); 2635 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2636 rt->rt_nexthop); 2637 imr->imr_metric = rt->rt_metric; 2638 imr->imr_nhops = rt->rt_nhops; 2639 imr->imr_lifetime = rt->rt_lifetime; 2640 imr->imr_lastmseq = rt->rt_lastmseq; 2641 off += sizeof(*imr); 2642 } 2643 MESH_RT_UNLOCK(ms); 2644 error = copyout(p, (uint8_t *)ireq->i_data, 2645 ireq->i_len); 2646 free(p, M_TEMP); 2647 break; 2648 case IEEE80211_MESH_RTCMD_FLUSH: 2649 case IEEE80211_MESH_RTCMD_ADD: 2650 case IEEE80211_MESH_RTCMD_DELETE: 2651 return EINVAL; 2652 default: 2653 return ENOSYS; 2654 } 2655 break; 2656 case IEEE80211_IOC_MESH_PR_METRIC: 2657 len = strlen(ms->ms_pmetric->mpm_descr); 2658 if (ireq->i_len < len) 2659 return EINVAL; 2660 ireq->i_len = len; 2661 error = copyout(ms->ms_pmetric->mpm_descr, 2662 (uint8_t *)ireq->i_data, len); 2663 break; 2664 case IEEE80211_IOC_MESH_PR_PATH: 2665 len = strlen(ms->ms_ppath->mpp_descr); 2666 if (ireq->i_len < len) 2667 return EINVAL; 2668 ireq->i_len = len; 2669 error = copyout(ms->ms_ppath->mpp_descr, 2670 (uint8_t *)ireq->i_data, len); 2671 break; 2672 default: 2673 return ENOSYS; 2674 } 2675 2676 return error; 2677} 2678IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2679 2680static int 2681mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2682{ 2683 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2684 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2685 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2686 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2687 int error; 2688 2689 if (vap->iv_opmode != IEEE80211_M_MBSS) 2690 return ENOSYS; 2691 2692 error = 0; 2693 switch (ireq->i_type) { 2694 case IEEE80211_IOC_MESH_ID: 2695 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2696 return EINVAL; 2697 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2698 if (error != 0) 2699 break; 2700 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2701 ms->ms_idlen = ireq->i_len; 2702 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2703 error = ENETRESET; 2704 break; 2705 case IEEE80211_IOC_MESH_AP: 2706 if (ireq->i_val) 2707 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2708 else 2709 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2710 error = ENETRESET; 2711 break; 2712 case IEEE80211_IOC_MESH_FWRD: 2713 if (ireq->i_val) 2714 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2715 else 2716 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2717 break; 2718 case IEEE80211_IOC_MESH_TTL: 2719 ms->ms_ttl = (uint8_t) ireq->i_val; 2720 break; 2721 case IEEE80211_IOC_MESH_RTCMD: 2722 switch (ireq->i_val) { 2723 case IEEE80211_MESH_RTCMD_LIST: 2724 return EINVAL; 2725 case IEEE80211_MESH_RTCMD_FLUSH: 2726 ieee80211_mesh_rt_flush(vap); 2727 break; 2728 case IEEE80211_MESH_RTCMD_ADD: 2729 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2730 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2731 return EINVAL; 2732 error = copyin(ireq->i_data, &tmpaddr, 2733 IEEE80211_ADDR_LEN); 2734 if (error == 0) 2735 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2736 break; 2737 case IEEE80211_MESH_RTCMD_DELETE: 2738 ieee80211_mesh_rt_del(vap, ireq->i_data); 2739 break; 2740 default: 2741 return ENOSYS; 2742 } 2743 break; 2744 case IEEE80211_IOC_MESH_PR_METRIC: 2745 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2746 if (error == 0) { 2747 error = mesh_select_proto_metric(vap, tmpproto); 2748 if (error == 0) 2749 error = ENETRESET; 2750 } 2751 break; 2752 case IEEE80211_IOC_MESH_PR_PATH: 2753 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2754 if (error == 0) { 2755 error = mesh_select_proto_path(vap, tmpproto); 2756 if (error == 0) 2757 error = ENETRESET; 2758 } 2759 break; 2760 default: 2761 return ENOSYS; 2762 } 2763 return error; 2764} 2765IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2766