ieee80211_mesh.c revision 232480
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 232480 2012-03-04 05:52:26Z adrian $"); 32#endif 33 34/* 35 * IEEE 802.11s Mesh Point (MBSS) support. 36 * 37 * Based on March 2009, D3.0 802.11s draft spec. 38 */ 39#include "opt_inet.h" 40#include "opt_wlan.h" 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/mbuf.h> 45#include <sys/malloc.h> 46#include <sys/kernel.h> 47 48#include <sys/socket.h> 49#include <sys/sockio.h> 50#include <sys/endian.h> 51#include <sys/errno.h> 52#include <sys/proc.h> 53#include <sys/sysctl.h> 54 55#include <net/if.h> 56#include <net/if_media.h> 57#include <net/if_llc.h> 58#include <net/ethernet.h> 59 60#include <net80211/ieee80211_var.h> 61#include <net80211/ieee80211_action.h> 62#include <net80211/ieee80211_input.h> 63#include <net80211/ieee80211_mesh.h> 64 65static void mesh_rt_flush_invalid(struct ieee80211vap *); 66static int mesh_select_proto_path(struct ieee80211vap *, const char *); 67static int mesh_select_proto_metric(struct ieee80211vap *, const char *); 68static void mesh_vattach(struct ieee80211vap *); 69static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); 70static void mesh_rt_cleanup_cb(void *); 71static void mesh_linkchange(struct ieee80211_node *, 72 enum ieee80211_mesh_mlstate); 73static void mesh_checkid(void *, struct ieee80211_node *); 74static uint32_t mesh_generateid(struct ieee80211vap *); 75static int mesh_checkpseq(struct ieee80211vap *, 76 const uint8_t [IEEE80211_ADDR_LEN], uint32_t); 77static struct ieee80211_node * 78 mesh_find_txnode(struct ieee80211vap *, 79 const uint8_t [IEEE80211_ADDR_LEN]); 80static void mesh_forward(struct ieee80211vap *, struct mbuf *, 81 const struct ieee80211_meshcntl *); 82static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int); 83static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 84 int, int); 85static void mesh_recv_ctl(struct ieee80211_node *, struct mbuf *, int); 86static void mesh_peer_timeout_setup(struct ieee80211_node *); 87static void mesh_peer_timeout_backoff(struct ieee80211_node *); 88static void mesh_peer_timeout_cb(void *); 89static __inline void 90 mesh_peer_timeout_stop(struct ieee80211_node *); 91static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 92static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 93static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 94 const uint8_t *); 95uint32_t mesh_airtime_calc(struct ieee80211_node *); 96 97/* 98 * Timeout values come from the specification and are in milliseconds. 99 */ 100static SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 101 "IEEE 802.11s parameters"); 102static int ieee80211_mesh_retrytimeout = -1; 103SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 104 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 105 "Retry timeout (msec)"); 106static int ieee80211_mesh_holdingtimeout = -1; 107SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 108 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 109 "Holding state timeout (msec)"); 110static int ieee80211_mesh_confirmtimeout = -1; 111SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 112 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 113 "Confirm state timeout (msec)"); 114static int ieee80211_mesh_maxretries = 2; 115SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 116 &ieee80211_mesh_maxretries, 0, 117 "Maximum retries during peer link establishment"); 118 119static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 120 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 121 122static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 123static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 124static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 125static ieee80211_recv_action_func mesh_recv_action_meshlmetric; 126 127static ieee80211_send_action_func mesh_send_action_meshpeering_open; 128static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 129static ieee80211_send_action_func mesh_send_action_meshpeering_close; 130static ieee80211_send_action_func mesh_send_action_meshlmetric; 131 132static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 133 .mpm_descr = "AIRTIME", 134 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 135 .mpm_metric = mesh_airtime_calc, 136}; 137 138static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 139static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 140 141#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) 142#define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 143#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 144 145MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 146 147/* 148 * Helper functions to manipulate the Mesh routing table. 149 */ 150 151static struct ieee80211_mesh_route * 152mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 153 const uint8_t dest[IEEE80211_ADDR_LEN]) 154{ 155 struct ieee80211_mesh_route *rt; 156 157 MESH_RT_LOCK_ASSERT(ms); 158 159 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 160 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 161 return rt; 162 } 163 return NULL; 164} 165 166static struct ieee80211_mesh_route * 167mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 168 const uint8_t dest[IEEE80211_ADDR_LEN]) 169{ 170 struct ieee80211_mesh_route *rt; 171 172 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 173 ("%s: adding broadcast to the routing table", __func__)); 174 175 MESH_RT_LOCK_ASSERT(ms); 176 177 rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 178 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 179 if (rt != NULL) { 180 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 181 rt->rt_priv = (void *)ALIGN(&rt[1]); 182 rt->rt_crtime = ticks; 183 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 184 } 185 return rt; 186} 187 188struct ieee80211_mesh_route * 189ieee80211_mesh_rt_find(struct ieee80211vap *vap, 190 const uint8_t dest[IEEE80211_ADDR_LEN]) 191{ 192 struct ieee80211_mesh_state *ms = vap->iv_mesh; 193 struct ieee80211_mesh_route *rt; 194 195 MESH_RT_LOCK(ms); 196 rt = mesh_rt_find_locked(ms, dest); 197 MESH_RT_UNLOCK(ms); 198 return rt; 199} 200 201struct ieee80211_mesh_route * 202ieee80211_mesh_rt_add(struct ieee80211vap *vap, 203 const uint8_t dest[IEEE80211_ADDR_LEN]) 204{ 205 struct ieee80211_mesh_state *ms = vap->iv_mesh; 206 struct ieee80211_mesh_route *rt; 207 208 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 209 ("%s: duplicate entry in the routing table", __func__)); 210 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 211 ("%s: adding self to the routing table", __func__)); 212 213 MESH_RT_LOCK(ms); 214 rt = mesh_rt_add_locked(ms, dest); 215 MESH_RT_UNLOCK(ms); 216 return rt; 217} 218 219/* 220 * Add a proxy route (as needed) for the specified destination. 221 */ 222void 223ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 224 const uint8_t dest[IEEE80211_ADDR_LEN]) 225{ 226 struct ieee80211_mesh_state *ms = vap->iv_mesh; 227 struct ieee80211_mesh_route *rt; 228 229 MESH_RT_LOCK(ms); 230 rt = mesh_rt_find_locked(ms, dest); 231 if (rt == NULL) { 232 rt = mesh_rt_add_locked(ms, dest); 233 if (rt == NULL) { 234 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 235 "%s", "unable to add proxy entry"); 236 vap->iv_stats.is_mesh_rtaddfailed++; 237 } else { 238 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 239 "%s", "add proxy entry"); 240 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 241 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 242 | IEEE80211_MESHRT_FLAGS_PROXY; 243 } 244 /* XXX assert PROXY? */ 245 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 246 struct ieee80211com *ic = vap->iv_ic; 247 /* 248 * Fix existing entry created by received frames from 249 * stations that have some memory of dest. We also 250 * flush any frames held on the staging queue; delivering 251 * them is too much trouble right now. 252 */ 253 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 254 "%s", "fix proxy entry"); 255 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 256 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 257 | IEEE80211_MESHRT_FLAGS_PROXY; 258 /* XXX belongs in hwmp */ 259 ieee80211_ageq_drain_node(&ic->ic_stageq, 260 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 261 /* XXX stat? */ 262 } 263 MESH_RT_UNLOCK(ms); 264} 265 266static __inline void 267mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 268{ 269 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 270 free(rt, M_80211_MESH_RT); 271} 272 273void 274ieee80211_mesh_rt_del(struct ieee80211vap *vap, 275 const uint8_t dest[IEEE80211_ADDR_LEN]) 276{ 277 struct ieee80211_mesh_state *ms = vap->iv_mesh; 278 struct ieee80211_mesh_route *rt, *next; 279 280 MESH_RT_LOCK(ms); 281 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 282 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 283 mesh_rt_del(ms, rt); 284 MESH_RT_UNLOCK(ms); 285 return; 286 } 287 } 288 MESH_RT_UNLOCK(ms); 289} 290 291void 292ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 293{ 294 struct ieee80211_mesh_state *ms = vap->iv_mesh; 295 struct ieee80211_mesh_route *rt, *next; 296 297 if (ms == NULL) 298 return; 299 MESH_RT_LOCK(ms); 300 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 301 mesh_rt_del(ms, rt); 302 MESH_RT_UNLOCK(ms); 303} 304 305void 306ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 307 const uint8_t peer[IEEE80211_ADDR_LEN]) 308{ 309 struct ieee80211_mesh_state *ms = vap->iv_mesh; 310 struct ieee80211_mesh_route *rt, *next; 311 312 MESH_RT_LOCK(ms); 313 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 314 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 315 mesh_rt_del(ms, rt); 316 } 317 MESH_RT_UNLOCK(ms); 318} 319 320/* 321 * Flush expired routing entries, i.e. those in invalid state for 322 * some time. 323 */ 324static void 325mesh_rt_flush_invalid(struct ieee80211vap *vap) 326{ 327 struct ieee80211_mesh_state *ms = vap->iv_mesh; 328 struct ieee80211_mesh_route *rt, *next; 329 330 if (ms == NULL) 331 return; 332 MESH_RT_LOCK(ms); 333 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 334 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 335 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 336 mesh_rt_del(ms, rt); 337 } 338 MESH_RT_UNLOCK(ms); 339} 340 341#define N(a) (sizeof(a) / sizeof(a[0])) 342int 343ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 344{ 345 int i, firstempty = -1; 346 347 for (i = 0; i < N(mesh_proto_paths); i++) { 348 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 349 IEEE80211_MESH_PROTO_DSZ) == 0) 350 return EEXIST; 351 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 352 firstempty = i; 353 } 354 if (firstempty < 0) 355 return ENOSPC; 356 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 357 mesh_proto_paths[firstempty].mpp_active = 1; 358 return 0; 359} 360 361int 362ieee80211_mesh_register_proto_metric(const struct 363 ieee80211_mesh_proto_metric *mpm) 364{ 365 int i, firstempty = -1; 366 367 for (i = 0; i < N(mesh_proto_metrics); i++) { 368 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 369 IEEE80211_MESH_PROTO_DSZ) == 0) 370 return EEXIST; 371 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 372 firstempty = i; 373 } 374 if (firstempty < 0) 375 return ENOSPC; 376 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 377 mesh_proto_metrics[firstempty].mpm_active = 1; 378 return 0; 379} 380 381static int 382mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 383{ 384 struct ieee80211_mesh_state *ms = vap->iv_mesh; 385 int i; 386 387 for (i = 0; i < N(mesh_proto_paths); i++) { 388 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 389 ms->ms_ppath = &mesh_proto_paths[i]; 390 return 0; 391 } 392 } 393 return ENOENT; 394} 395 396static int 397mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 398{ 399 struct ieee80211_mesh_state *ms = vap->iv_mesh; 400 int i; 401 402 for (i = 0; i < N(mesh_proto_metrics); i++) { 403 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 404 ms->ms_pmetric = &mesh_proto_metrics[i]; 405 return 0; 406 } 407 } 408 return ENOENT; 409} 410#undef N 411 412static void 413ieee80211_mesh_init(void) 414{ 415 416 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 417 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 418 419 /* 420 * Setup mesh parameters that depends on the clock frequency. 421 */ 422 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 423 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 424 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 425 426 /* 427 * Register action frame handlers. 428 */ 429 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 430 IEEE80211_ACTION_MESHPEERING_OPEN, 431 mesh_recv_action_meshpeering_open); 432 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 433 IEEE80211_ACTION_MESHPEERING_CONFIRM, 434 mesh_recv_action_meshpeering_confirm); 435 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 436 IEEE80211_ACTION_MESHPEERING_CLOSE, 437 mesh_recv_action_meshpeering_close); 438 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESH, 439 IEEE80211_ACTION_MESH_LMETRIC, mesh_recv_action_meshlmetric); 440 441 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 442 IEEE80211_ACTION_MESHPEERING_OPEN, 443 mesh_send_action_meshpeering_open); 444 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 445 IEEE80211_ACTION_MESHPEERING_CONFIRM, 446 mesh_send_action_meshpeering_confirm); 447 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 448 IEEE80211_ACTION_MESHPEERING_CLOSE, 449 mesh_send_action_meshpeering_close); 450 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESH, 451 IEEE80211_ACTION_MESH_LMETRIC, 452 mesh_send_action_meshlmetric); 453 454 /* 455 * Register Airtime Link Metric. 456 */ 457 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 458 459} 460SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 461 462void 463ieee80211_mesh_attach(struct ieee80211com *ic) 464{ 465 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 466} 467 468void 469ieee80211_mesh_detach(struct ieee80211com *ic) 470{ 471} 472 473static void 474mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 475{ 476 struct ieee80211com *ic = ni->ni_ic; 477 uint16_t args[3]; 478 479 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 480 args[0] = ni->ni_mlpid; 481 args[1] = ni->ni_mllid; 482 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 483 ieee80211_send_action(ni, 484 IEEE80211_ACTION_CAT_MESHPEERING, 485 IEEE80211_ACTION_MESHPEERING_CLOSE, 486 args); 487 } 488 callout_drain(&ni->ni_mltimer); 489 /* XXX belongs in hwmp */ 490 ieee80211_ageq_drain_node(&ic->ic_stageq, 491 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 492} 493 494static void 495mesh_vdetach(struct ieee80211vap *vap) 496{ 497 struct ieee80211_mesh_state *ms = vap->iv_mesh; 498 499 callout_drain(&ms->ms_cleantimer); 500 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 501 NULL); 502 ieee80211_mesh_rt_flush(vap); 503 mtx_destroy(&ms->ms_rt_lock); 504 ms->ms_ppath->mpp_vdetach(vap); 505 free(vap->iv_mesh, M_80211_VAP); 506 vap->iv_mesh = NULL; 507} 508 509static void 510mesh_vattach(struct ieee80211vap *vap) 511{ 512 struct ieee80211_mesh_state *ms; 513 vap->iv_newstate = mesh_newstate; 514 vap->iv_input = mesh_input; 515 vap->iv_opdetach = mesh_vdetach; 516 vap->iv_recv_mgmt = mesh_recv_mgmt; 517 vap->iv_recv_ctl = mesh_recv_ctl; 518 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 519 M_NOWAIT | M_ZERO); 520 if (ms == NULL) { 521 printf("%s: couldn't alloc MBSS state\n", __func__); 522 return; 523 } 524 vap->iv_mesh = ms; 525 ms->ms_seq = 0; 526 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 527 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 528 TAILQ_INIT(&ms->ms_routes); 529 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 530 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 531 mesh_select_proto_metric(vap, "AIRTIME"); 532 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 533 mesh_select_proto_path(vap, "HWMP"); 534 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 535 ms->ms_ppath->mpp_vattach(vap); 536} 537 538/* 539 * IEEE80211_M_MBSS vap state machine handler. 540 */ 541static int 542mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 543{ 544 struct ieee80211_mesh_state *ms = vap->iv_mesh; 545 struct ieee80211com *ic = vap->iv_ic; 546 struct ieee80211_node *ni; 547 enum ieee80211_state ostate; 548 549 IEEE80211_LOCK_ASSERT(ic); 550 551 ostate = vap->iv_state; 552 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 553 __func__, ieee80211_state_name[ostate], 554 ieee80211_state_name[nstate], arg); 555 vap->iv_state = nstate; /* state transition */ 556 if (ostate != IEEE80211_S_SCAN) 557 ieee80211_cancel_scan(vap); /* background scan */ 558 ni = vap->iv_bss; /* NB: no reference held */ 559 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 560 callout_drain(&ms->ms_cleantimer); 561 switch (nstate) { 562 case IEEE80211_S_INIT: 563 switch (ostate) { 564 case IEEE80211_S_SCAN: 565 ieee80211_cancel_scan(vap); 566 break; 567 case IEEE80211_S_CAC: 568 ieee80211_dfs_cac_stop(vap); 569 break; 570 case IEEE80211_S_RUN: 571 ieee80211_iterate_nodes(&ic->ic_sta, 572 mesh_vdetach_peers, NULL); 573 break; 574 default: 575 break; 576 } 577 if (ostate != IEEE80211_S_INIT) { 578 /* NB: optimize INIT -> INIT case */ 579 ieee80211_reset_bss(vap); 580 ieee80211_mesh_rt_flush(vap); 581 } 582 break; 583 case IEEE80211_S_SCAN: 584 switch (ostate) { 585 case IEEE80211_S_INIT: 586 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 587 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 588 ms->ms_idlen != 0) { 589 /* 590 * Already have a channel and a mesh ID; bypass 591 * the scan and startup immediately. 592 */ 593 ieee80211_create_ibss(vap, vap->iv_des_chan); 594 break; 595 } 596 /* 597 * Initiate a scan. We can come here as a result 598 * of an IEEE80211_IOC_SCAN_REQ too in which case 599 * the vap will be marked with IEEE80211_FEXT_SCANREQ 600 * and the scan request parameters will be present 601 * in iv_scanreq. Otherwise we do the default. 602 */ 603 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 604 ieee80211_check_scan(vap, 605 vap->iv_scanreq_flags, 606 vap->iv_scanreq_duration, 607 vap->iv_scanreq_mindwell, 608 vap->iv_scanreq_maxdwell, 609 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 610 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 611 } else 612 ieee80211_check_scan_current(vap); 613 break; 614 default: 615 break; 616 } 617 break; 618 case IEEE80211_S_CAC: 619 /* 620 * Start CAC on a DFS channel. We come here when starting 621 * a bss on a DFS channel (see ieee80211_create_ibss). 622 */ 623 ieee80211_dfs_cac_start(vap); 624 break; 625 case IEEE80211_S_RUN: 626 switch (ostate) { 627 case IEEE80211_S_INIT: 628 /* 629 * Already have a channel; bypass the 630 * scan and startup immediately. 631 * Note that ieee80211_create_ibss will call 632 * back to do a RUN->RUN state change. 633 */ 634 ieee80211_create_ibss(vap, 635 ieee80211_ht_adjust_channel(ic, 636 ic->ic_curchan, vap->iv_flags_ht)); 637 /* NB: iv_bss is changed on return */ 638 break; 639 case IEEE80211_S_CAC: 640 /* 641 * NB: This is the normal state change when CAC 642 * expires and no radar was detected; no need to 643 * clear the CAC timer as it's already expired. 644 */ 645 /* fall thru... */ 646 case IEEE80211_S_CSA: 647#if 0 648 /* 649 * Shorten inactivity timer of associated stations 650 * to weed out sta's that don't follow a CSA. 651 */ 652 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 653#endif 654 /* 655 * Update bss node channel to reflect where 656 * we landed after CSA. 657 */ 658 ieee80211_node_set_chan(vap->iv_bss, 659 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 660 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 661 /* XXX bypass debug msgs */ 662 break; 663 case IEEE80211_S_SCAN: 664 case IEEE80211_S_RUN: 665#ifdef IEEE80211_DEBUG 666 if (ieee80211_msg_debug(vap)) { 667 struct ieee80211_node *ni = vap->iv_bss; 668 ieee80211_note(vap, 669 "synchronized with %s meshid ", 670 ether_sprintf(ni->ni_meshid)); 671 ieee80211_print_essid(ni->ni_meshid, 672 ni->ni_meshidlen); 673 /* XXX MCS/HT */ 674 printf(" channel %d\n", 675 ieee80211_chan2ieee(ic, ic->ic_curchan)); 676 } 677#endif 678 break; 679 default: 680 break; 681 } 682 ieee80211_node_authorize(vap->iv_bss); 683 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 684 mesh_rt_cleanup_cb, vap); 685 break; 686 default: 687 break; 688 } 689 /* NB: ostate not nstate */ 690 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 691 return 0; 692} 693 694static void 695mesh_rt_cleanup_cb(void *arg) 696{ 697 struct ieee80211vap *vap = arg; 698 struct ieee80211_mesh_state *ms = vap->iv_mesh; 699 700 mesh_rt_flush_invalid(vap); 701 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 702 mesh_rt_cleanup_cb, vap); 703} 704 705 706/* 707 * Helper function to note the Mesh Peer Link FSM change. 708 */ 709static void 710mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 711{ 712 struct ieee80211vap *vap = ni->ni_vap; 713 struct ieee80211_mesh_state *ms = vap->iv_mesh; 714#ifdef IEEE80211_DEBUG 715 static const char *meshlinkstates[] = { 716 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 717 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 718 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 719 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 720 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 721 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 722 }; 723#endif 724 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 725 ni, "peer link: %s -> %s", 726 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 727 728 /* track neighbor count */ 729 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 730 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 731 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 732 ms->ms_neighbors++; 733 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 734 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 735 state != IEEE80211_NODE_MESH_ESTABLISHED) { 736 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 737 ms->ms_neighbors--; 738 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 739 } 740 ni->ni_mlstate = state; 741 switch (state) { 742 case IEEE80211_NODE_MESH_HOLDING: 743 ms->ms_ppath->mpp_peerdown(ni); 744 break; 745 case IEEE80211_NODE_MESH_ESTABLISHED: 746 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 747 break; 748 default: 749 break; 750 } 751} 752 753/* 754 * Helper function to generate a unique local ID required for mesh 755 * peer establishment. 756 */ 757static void 758mesh_checkid(void *arg, struct ieee80211_node *ni) 759{ 760 uint16_t *r = arg; 761 762 if (*r == ni->ni_mllid) 763 *(uint16_t *)arg = 0; 764} 765 766static uint32_t 767mesh_generateid(struct ieee80211vap *vap) 768{ 769 int maxiter = 4; 770 uint16_t r; 771 772 do { 773 get_random_bytes(&r, 2); 774 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 775 maxiter--; 776 } while (r == 0 && maxiter > 0); 777 return r; 778} 779 780/* 781 * Verifies if we already received this packet by checking its 782 * sequence number. 783 * Returns 0 if the frame is to be accepted, 1 otherwise. 784 */ 785static int 786mesh_checkpseq(struct ieee80211vap *vap, 787 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 788{ 789 struct ieee80211_mesh_route *rt; 790 791 rt = ieee80211_mesh_rt_find(vap, source); 792 if (rt == NULL) { 793 rt = ieee80211_mesh_rt_add(vap, source); 794 if (rt == NULL) { 795 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 796 "%s", "add mcast route failed"); 797 vap->iv_stats.is_mesh_rtaddfailed++; 798 return 1; 799 } 800 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 801 "add mcast route, mesh seqno %d", seq); 802 rt->rt_lastmseq = seq; 803 return 0; 804 } 805 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 806 return 1; 807 } else { 808 rt->rt_lastmseq = seq; 809 return 0; 810 } 811} 812 813/* 814 * Iterate the routing table and locate the next hop. 815 */ 816static struct ieee80211_node * 817mesh_find_txnode(struct ieee80211vap *vap, 818 const uint8_t dest[IEEE80211_ADDR_LEN]) 819{ 820 struct ieee80211_mesh_route *rt; 821 822 rt = ieee80211_mesh_rt_find(vap, dest); 823 if (rt == NULL) 824 return NULL; 825 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 826 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 827 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 828 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 829 /* XXX stat */ 830 return NULL; 831 } 832 return ieee80211_find_txnode(vap, rt->rt_nexthop); 833} 834 835/* 836 * Forward the specified frame. 837 * Decrement the TTL and set TA to our MAC address. 838 */ 839static void 840mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 841 const struct ieee80211_meshcntl *mc) 842{ 843 struct ieee80211com *ic = vap->iv_ic; 844 struct ieee80211_mesh_state *ms = vap->iv_mesh; 845 struct ifnet *ifp = vap->iv_ifp; 846 struct ifnet *parent = ic->ic_ifp; 847 const struct ieee80211_frame *wh = 848 mtod(m, const struct ieee80211_frame *); 849 struct mbuf *mcopy; 850 struct ieee80211_meshcntl *mccopy; 851 struct ieee80211_frame *whcopy; 852 struct ieee80211_node *ni; 853 int err; 854 855 if (mc->mc_ttl == 0) { 856 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 857 "%s", "frame not fwd'd, ttl 0"); 858 vap->iv_stats.is_mesh_fwd_ttl++; 859 return; 860 } 861 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 862 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 863 "%s", "frame not fwd'd, fwding disabled"); 864 vap->iv_stats.is_mesh_fwd_disabled++; 865 return; 866 } 867 mcopy = m_dup(m, M_DONTWAIT); 868 if (mcopy == NULL) { 869 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 870 "%s", "frame not fwd'd, cannot dup"); 871 vap->iv_stats.is_mesh_fwd_nobuf++; 872 ifp->if_oerrors++; 873 return; 874 } 875 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 876 sizeof(struct ieee80211_meshcntl)); 877 if (mcopy == NULL) { 878 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 879 "%s", "frame not fwd'd, too short"); 880 vap->iv_stats.is_mesh_fwd_tooshort++; 881 ifp->if_oerrors++; 882 m_freem(mcopy); 883 return; 884 } 885 whcopy = mtod(mcopy, struct ieee80211_frame *); 886 mccopy = (struct ieee80211_meshcntl *) 887 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 888 /* XXX clear other bits? */ 889 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 890 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 891 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 892 ni = ieee80211_ref_node(vap->iv_bss); 893 mcopy->m_flags |= M_MCAST; 894 } else { 895 ni = mesh_find_txnode(vap, whcopy->i_addr3); 896 if (ni == NULL) { 897 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 898 "%s", "frame not fwd'd, no path"); 899 vap->iv_stats.is_mesh_fwd_nopath++; 900 m_freem(mcopy); 901 return; 902 } 903 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 904 } 905 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 906 mccopy->mc_ttl--; 907 908 /* XXX calculate priority so drivers can find the tx queue */ 909 M_WME_SETAC(mcopy, WME_AC_BE); 910 911 /* XXX do we know m_nextpkt is NULL? */ 912 mcopy->m_pkthdr.rcvif = (void *) ni; 913 err = parent->if_transmit(parent, mcopy); 914 if (err != 0) { 915 /* NB: IFQ_HANDOFF reclaims mbuf */ 916 ieee80211_free_node(ni); 917 } else { 918 ifp->if_opackets++; 919 } 920} 921 922static struct mbuf * 923mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 924{ 925#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 926 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 927 sizeof(struct ieee80211_meshcntl_ae11)]; 928 const struct ieee80211_qosframe_addr4 *wh; 929 const struct ieee80211_meshcntl_ae10 *mc; 930 struct ether_header *eh; 931 struct llc *llc; 932 int ae; 933 934 if (m->m_len < hdrlen + sizeof(*llc) && 935 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 936 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 937 "discard data frame: %s", "m_pullup failed"); 938 vap->iv_stats.is_rx_tooshort++; 939 return NULL; 940 } 941 memcpy(b, mtod(m, caddr_t), hdrlen); 942 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 943 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 944 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 945 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 946 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 947 948 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 949 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 950 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 951 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 952 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 953 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 954 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 955 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 956 llc = NULL; 957 } else { 958 m_adj(m, hdrlen - sizeof(*eh)); 959 } 960 eh = mtod(m, struct ether_header *); 961 ae = mc->mc_flags & 3; 962 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 963 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 964 if (ae == 0) { 965 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 966 } else if (ae == 1) { 967 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 968 } else { 969 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 970 (const struct ieee80211_frame *)wh, NULL, 971 "bad AE %d", ae); 972 vap->iv_stats.is_mesh_badae++; 973 m_freem(m); 974 return NULL; 975 } 976 } else { 977 if (ae == 0) { 978 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 979 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 980 } else if (ae == 2) { 981 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 982 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 983 } else { 984 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 985 (const struct ieee80211_frame *)wh, NULL, 986 "bad AE %d", ae); 987 vap->iv_stats.is_mesh_badae++; 988 m_freem(m); 989 return NULL; 990 } 991 } 992#ifdef ALIGNED_POINTER 993 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 994 m = ieee80211_realign(vap, m, sizeof(*eh)); 995 if (m == NULL) 996 return NULL; 997 } 998#endif /* ALIGNED_POINTER */ 999 if (llc != NULL) { 1000 eh = mtod(m, struct ether_header *); 1001 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 1002 } 1003 return m; 1004#undef WDIR 1005} 1006 1007/* 1008 * Return non-zero if the unicast mesh data frame should be processed 1009 * locally. Frames that are not proxy'd have our address, otherwise 1010 * we need to consult the routing table to look for a proxy entry. 1011 */ 1012static __inline int 1013mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 1014 const struct ieee80211_meshcntl *mc) 1015{ 1016 int ae = mc->mc_flags & 3; 1017 1018 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1019 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1020 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1021 if (ae == 2) { /* ucast w/ proxy */ 1022 const struct ieee80211_meshcntl_ae10 *mc10 = 1023 (const struct ieee80211_meshcntl_ae10 *) mc; 1024 struct ieee80211_mesh_route *rt = 1025 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1026 /* check for proxy route to ourself */ 1027 return (rt != NULL && 1028 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1029 } else /* ucast w/o proxy */ 1030 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1031} 1032 1033static int 1034mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1035{ 1036#define HAS_SEQ(type) ((type & 0x4) == 0) 1037 struct ieee80211vap *vap = ni->ni_vap; 1038 struct ieee80211com *ic = ni->ni_ic; 1039 struct ifnet *ifp = vap->iv_ifp; 1040 struct ieee80211_frame *wh; 1041 const struct ieee80211_meshcntl *mc; 1042 int hdrspace, meshdrlen, need_tap; 1043 uint8_t dir, type, subtype; 1044 uint32_t seq; 1045 uint8_t *addr, qos[2]; 1046 ieee80211_seq rxseq; 1047 1048 KASSERT(ni != NULL, ("null node")); 1049 ni->ni_inact = ni->ni_inact_reload; 1050 1051 need_tap = 1; /* mbuf need to be tapped. */ 1052 type = -1; /* undefined */ 1053 1054 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1055 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1056 ni->ni_macaddr, NULL, 1057 "too short (1): len %u", m->m_pkthdr.len); 1058 vap->iv_stats.is_rx_tooshort++; 1059 goto out; 1060 } 1061 /* 1062 * Bit of a cheat here, we use a pointer for a 3-address 1063 * frame format but don't reference fields past outside 1064 * ieee80211_frame_min w/o first validating the data is 1065 * present. 1066 */ 1067 wh = mtod(m, struct ieee80211_frame *); 1068 1069 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1070 IEEE80211_FC0_VERSION_0) { 1071 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1072 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1073 vap->iv_stats.is_rx_badversion++; 1074 goto err; 1075 } 1076 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1077 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1078 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1079 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1080 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1081 ni->ni_noise = nf; 1082 if (HAS_SEQ(type)) { 1083 uint8_t tid = ieee80211_gettid(wh); 1084 1085 if (IEEE80211_QOS_HAS_SEQ(wh) && 1086 TID_TO_WME_AC(tid) >= WME_AC_VI) 1087 ic->ic_wme.wme_hipri_traffic++; 1088 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1089 if (! ieee80211_check_rxseq(ni, wh)) { 1090 /* duplicate, discard */ 1091 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1092 wh->i_addr1, "duplicate", 1093 "seqno <%u,%u> fragno <%u,%u> tid %u", 1094 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1095 ni->ni_rxseqs[tid] >> 1096 IEEE80211_SEQ_SEQ_SHIFT, 1097 rxseq & IEEE80211_SEQ_FRAG_MASK, 1098 ni->ni_rxseqs[tid] & 1099 IEEE80211_SEQ_FRAG_MASK, 1100 tid); 1101 vap->iv_stats.is_rx_dup++; 1102 IEEE80211_NODE_STAT(ni, rx_dup); 1103 goto out; 1104 } 1105 ni->ni_rxseqs[tid] = rxseq; 1106 } 1107 } 1108#ifdef IEEE80211_DEBUG 1109 /* 1110 * It's easier, but too expensive, to simulate different mesh 1111 * topologies by consulting the ACL policy very early, so do this 1112 * only under DEBUG. 1113 * 1114 * NB: this check is also done upon peering link initiation. 1115 */ 1116 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { 1117 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1118 wh, NULL, "%s", "disallowed by ACL"); 1119 vap->iv_stats.is_rx_acl++; 1120 goto out; 1121 } 1122#endif 1123 switch (type) { 1124 case IEEE80211_FC0_TYPE_DATA: 1125 if (ni == vap->iv_bss) 1126 goto out; 1127 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1128 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1129 ni->ni_macaddr, NULL, 1130 "peer link not yet established (%d)", 1131 ni->ni_mlstate); 1132 vap->iv_stats.is_mesh_nolink++; 1133 goto out; 1134 } 1135 if (dir != IEEE80211_FC1_DIR_FROMDS && 1136 dir != IEEE80211_FC1_DIR_DSTODS) { 1137 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1138 wh, "data", "incorrect dir 0x%x", dir); 1139 vap->iv_stats.is_rx_wrongdir++; 1140 goto err; 1141 } 1142 1143 /* All Mesh data frames are QoS subtype */ 1144 if (!HAS_SEQ(type)) { 1145 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1146 wh, "data", "incorrect subtype 0x%x", subtype); 1147 vap->iv_stats.is_rx_badsubtype++; 1148 goto err; 1149 } 1150 1151 /* 1152 * Next up, any fragmentation. 1153 * XXX: we defrag before we even try to forward, 1154 * Mesh Control field is not present in sub-sequent 1155 * fragmented frames. This is in contrast to Draft 4.0. 1156 */ 1157 hdrspace = ieee80211_hdrspace(ic, wh); 1158 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1159 m = ieee80211_defrag(ni, m, hdrspace); 1160 if (m == NULL) { 1161 /* Fragment dropped or frame not complete yet */ 1162 goto out; 1163 } 1164 } 1165 wh = mtod(m, struct ieee80211_frame *); /* NB: after defrag */ 1166 1167 /* 1168 * Now we have a complete Mesh Data frame. 1169 */ 1170 1171 /* 1172 * Only fromDStoDS data frames use 4 address qos frames 1173 * as specified in amendment. Otherwise addr4 is located 1174 * in the Mesh Control field and a 3 address qos frame 1175 * is used. 1176 */ 1177 if (IEEE80211_IS_DSTODS(wh)) 1178 *(uint16_t *)qos = *(uint16_t *) 1179 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos; 1180 else 1181 *(uint16_t *)qos = *(uint16_t *) 1182 ((struct ieee80211_qosframe *)wh)->i_qos; 1183 1184 /* 1185 * NB: The mesh STA sets the Mesh Control Present 1186 * subfield to 1 in the Mesh Data frame containing 1187 * an unfragmented MSDU, an A-MSDU, or the first 1188 * fragment of an MSDU. 1189 * After defrag it should always be present. 1190 */ 1191 if (!(qos[1] & IEEE80211_QOS_MC)) { 1192 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1193 ni->ni_macaddr, NULL, 1194 "%s", "Mesh control field not present"); 1195 vap->iv_stats.is_rx_elem_missing++; /* XXX: kinda */ 1196 goto err; 1197 } 1198 1199 /* pull up enough to get to the mesh control */ 1200 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1201 (m = m_pullup(m, hdrspace + 1202 sizeof(struct ieee80211_meshcntl))) == NULL) { 1203 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1204 ni->ni_macaddr, NULL, 1205 "data too short: expecting %u", hdrspace); 1206 vap->iv_stats.is_rx_tooshort++; 1207 goto out; /* XXX */ 1208 } 1209 /* 1210 * Now calculate the full extent of the headers. Note 1211 * mesh_decap will pull up anything we didn't get 1212 * above when it strips the 802.11 headers. 1213 */ 1214 mc = (const struct ieee80211_meshcntl *) 1215 (mtod(m, const uint8_t *) + hdrspace); 1216 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1217 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1218 hdrspace += meshdrlen; 1219 seq = LE_READ_4(mc->mc_seq); 1220 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1221 addr = wh->i_addr3; 1222 else 1223 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1224 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1225 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1226 addr, "data", "%s", "not to me"); 1227 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1228 goto out; 1229 } 1230 if (mesh_checkpseq(vap, addr, seq) != 0) { 1231 vap->iv_stats.is_rx_dup++; 1232 goto out; 1233 } 1234 1235 /* 1236 * Potentially forward packet. See table s36 (p140) 1237 * for the rules. XXX tap fwd'd packets not for us? 1238 */ 1239 if (dir == IEEE80211_FC1_DIR_FROMDS || 1240 !mesh_isucastforme(vap, wh, mc)) { 1241 mesh_forward(vap, m, mc); 1242 if (dir == IEEE80211_FC1_DIR_DSTODS) 1243 goto out; 1244 /* NB: fall thru to deliver mcast frames locally */ 1245 } 1246 1247 if (ieee80211_radiotap_active_vap(vap)) 1248 ieee80211_radiotap_rx(vap, m); 1249 need_tap = 0; 1250 1251 /* 1252 * Finally, strip the 802.11 header. 1253 */ 1254 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1255 if (m == NULL) { 1256 /* XXX mask bit to check for both */ 1257 /* don't count Null data frames as errors */ 1258 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1259 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1260 goto out; 1261 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1262 ni->ni_macaddr, "data", "%s", "decap error"); 1263 vap->iv_stats.is_rx_decap++; 1264 IEEE80211_NODE_STAT(ni, rx_decap); 1265 goto err; 1266 } 1267 if (qos[0] & IEEE80211_QOS_AMSDU) { 1268 m = ieee80211_decap_amsdu(ni, m); 1269 if (m == NULL) 1270 return IEEE80211_FC0_TYPE_DATA; 1271 } 1272 ieee80211_deliver_data(vap, ni, m); 1273 return type; 1274 case IEEE80211_FC0_TYPE_MGT: 1275 vap->iv_stats.is_rx_mgmt++; 1276 IEEE80211_NODE_STAT(ni, rx_mgmt); 1277 if (dir != IEEE80211_FC1_DIR_NODS) { 1278 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1279 wh, "mgt", "incorrect dir 0x%x", dir); 1280 vap->iv_stats.is_rx_wrongdir++; 1281 goto err; 1282 } 1283 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1284 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1285 ni->ni_macaddr, "mgt", "too short: len %u", 1286 m->m_pkthdr.len); 1287 vap->iv_stats.is_rx_tooshort++; 1288 goto out; 1289 } 1290#ifdef IEEE80211_DEBUG 1291 if ((ieee80211_msg_debug(vap) && 1292 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1293 ieee80211_msg_dumppkts(vap)) { 1294 if_printf(ifp, "received %s from %s rssi %d\n", 1295 ieee80211_mgt_subtype_name[subtype >> 1296 IEEE80211_FC0_SUBTYPE_SHIFT], 1297 ether_sprintf(wh->i_addr2), rssi); 1298 } 1299#endif 1300 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1301 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1302 wh, NULL, "%s", "WEP set but not permitted"); 1303 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1304 goto out; 1305 } 1306 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1307 goto out; 1308 case IEEE80211_FC0_TYPE_CTL: 1309 vap->iv_stats.is_rx_ctl++; 1310 IEEE80211_NODE_STAT(ni, rx_ctrl); 1311 goto out; 1312 default: 1313 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1314 wh, "bad", "frame type 0x%x", type); 1315 /* should not come here */ 1316 break; 1317 } 1318err: 1319 ifp->if_ierrors++; 1320out: 1321 if (m != NULL) { 1322 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1323 ieee80211_radiotap_rx(vap, m); 1324 m_freem(m); 1325 } 1326 return type; 1327} 1328 1329static void 1330mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1331 int rssi, int nf) 1332{ 1333 struct ieee80211vap *vap = ni->ni_vap; 1334 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1335 struct ieee80211com *ic = ni->ni_ic; 1336 struct ieee80211_frame *wh; 1337 uint8_t *frm, *efrm; 1338 1339 wh = mtod(m0, struct ieee80211_frame *); 1340 frm = (uint8_t *)&wh[1]; 1341 efrm = mtod(m0, uint8_t *) + m0->m_len; 1342 switch (subtype) { 1343 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1344 case IEEE80211_FC0_SUBTYPE_BEACON: 1345 { 1346 struct ieee80211_scanparams scan; 1347 /* 1348 * We process beacon/probe response 1349 * frames to discover neighbors. 1350 */ 1351 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1352 return; 1353 /* 1354 * Count frame now that we know it's to be processed. 1355 */ 1356 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1357 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1358 IEEE80211_NODE_STAT(ni, rx_beacons); 1359 } else 1360 IEEE80211_NODE_STAT(ni, rx_proberesp); 1361 /* 1362 * If scanning, just pass information to the scan module. 1363 */ 1364 if (ic->ic_flags & IEEE80211_F_SCAN) { 1365 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1366 /* 1367 * Actively scanning a channel marked passive; 1368 * send a probe request now that we know there 1369 * is 802.11 traffic present. 1370 * 1371 * XXX check if the beacon we recv'd gives 1372 * us what we need and suppress the probe req 1373 */ 1374 ieee80211_probe_curchan(vap, 1); 1375 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1376 } 1377 ieee80211_add_scan(vap, &scan, wh, 1378 subtype, rssi, nf); 1379 return; 1380 } 1381 1382 /* The rest of this code assumes we are running */ 1383 if (vap->iv_state != IEEE80211_S_RUN) 1384 return; 1385 /* 1386 * Ignore non-mesh STAs. 1387 */ 1388 if ((scan.capinfo & 1389 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1390 scan.meshid == NULL || scan.meshconf == NULL) { 1391 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1392 wh, "beacon", "%s", "not a mesh sta"); 1393 vap->iv_stats.is_mesh_wrongmesh++; 1394 return; 1395 } 1396 /* 1397 * Ignore STAs for other mesh networks. 1398 */ 1399 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1400 mesh_verify_meshconf(vap, scan.meshconf)) { 1401 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1402 wh, "beacon", "%s", "not for our mesh"); 1403 vap->iv_stats.is_mesh_wrongmesh++; 1404 return; 1405 } 1406 /* 1407 * Peer only based on the current ACL policy. 1408 */ 1409 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { 1410 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1411 wh, NULL, "%s", "disallowed by ACL"); 1412 vap->iv_stats.is_rx_acl++; 1413 return; 1414 } 1415 /* 1416 * Do neighbor discovery. 1417 */ 1418 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1419 /* 1420 * Create a new entry in the neighbor table. 1421 */ 1422 ni = ieee80211_add_neighbor(vap, wh, &scan); 1423 } 1424 /* 1425 * Automatically peer with discovered nodes if possible. 1426 * XXX backoff on repeated failure 1427 */ 1428 if (ni != vap->iv_bss && 1429 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1430 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1431 uint16_t args[1]; 1432 1433 ni->ni_mlpid = mesh_generateid(vap); 1434 if (ni->ni_mlpid == 0) 1435 return; 1436 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1437 args[0] = ni->ni_mlpid; 1438 ieee80211_send_action(ni, 1439 IEEE80211_ACTION_CAT_MESHPEERING, 1440 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1441 ni->ni_mlrcnt = 0; 1442 mesh_peer_timeout_setup(ni); 1443 } 1444 break; 1445 } 1446 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1447 { 1448 uint8_t *ssid, *meshid, *rates, *xrates; 1449 uint8_t *sfrm; 1450 1451 if (vap->iv_state != IEEE80211_S_RUN) { 1452 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1453 wh, NULL, "wrong state %s", 1454 ieee80211_state_name[vap->iv_state]); 1455 vap->iv_stats.is_rx_mgtdiscard++; 1456 return; 1457 } 1458 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1459 /* frame must be directed */ 1460 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1461 wh, NULL, "%s", "not unicast"); 1462 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1463 return; 1464 } 1465 /* 1466 * prreq frame format 1467 * [tlv] ssid 1468 * [tlv] supported rates 1469 * [tlv] extended supported rates 1470 * [tlv] mesh id 1471 */ 1472 ssid = meshid = rates = xrates = NULL; 1473 sfrm = frm; 1474 while (efrm - frm > 1) { 1475 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1476 switch (*frm) { 1477 case IEEE80211_ELEMID_SSID: 1478 ssid = frm; 1479 break; 1480 case IEEE80211_ELEMID_RATES: 1481 rates = frm; 1482 break; 1483 case IEEE80211_ELEMID_XRATES: 1484 xrates = frm; 1485 break; 1486 case IEEE80211_ELEMID_MESHID: 1487 meshid = frm; 1488 break; 1489 } 1490 frm += frm[1] + 2; 1491 } 1492 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1493 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1494 if (xrates != NULL) 1495 IEEE80211_VERIFY_ELEMENT(xrates, 1496 IEEE80211_RATE_MAXSIZE - rates[1], return); 1497 if (meshid != NULL) { 1498 IEEE80211_VERIFY_ELEMENT(meshid, 1499 IEEE80211_MESHID_LEN, return); 1500 /* NB: meshid, not ssid */ 1501 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1502 } 1503 1504 /* XXX find a better class or define it's own */ 1505 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1506 "%s", "recv probe req"); 1507 /* 1508 * Some legacy 11b clients cannot hack a complete 1509 * probe response frame. When the request includes 1510 * only a bare-bones rate set, communicate this to 1511 * the transmit side. 1512 */ 1513 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1514 break; 1515 } 1516 1517 case IEEE80211_FC0_SUBTYPE_ACTION: 1518 case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: 1519 if (ni == vap->iv_bss) { 1520 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1521 wh, NULL, "%s", "unknown node"); 1522 vap->iv_stats.is_rx_mgtdiscard++; 1523 } else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1524 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1525 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1526 wh, NULL, "%s", "not for us"); 1527 vap->iv_stats.is_rx_mgtdiscard++; 1528 } else if (vap->iv_state != IEEE80211_S_RUN) { 1529 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1530 wh, NULL, "wrong state %s", 1531 ieee80211_state_name[vap->iv_state]); 1532 vap->iv_stats.is_rx_mgtdiscard++; 1533 } else { 1534 if (ieee80211_parse_action(ni, m0) == 0) 1535 (void)ic->ic_recv_action(ni, wh, frm, efrm); 1536 } 1537 break; 1538 1539 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1540 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1541 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1542 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1543 case IEEE80211_FC0_SUBTYPE_ATIM: 1544 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1545 case IEEE80211_FC0_SUBTYPE_AUTH: 1546 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1547 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1548 wh, NULL, "%s", "not handled"); 1549 vap->iv_stats.is_rx_mgtdiscard++; 1550 break; 1551 1552 default: 1553 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1554 wh, "mgt", "subtype 0x%x not handled", subtype); 1555 vap->iv_stats.is_rx_badsubtype++; 1556 break; 1557 } 1558} 1559 1560static void 1561mesh_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 1562{ 1563 1564 switch (subtype) { 1565 case IEEE80211_FC0_SUBTYPE_BAR: 1566 ieee80211_recv_bar(ni, m); 1567 break; 1568 } 1569} 1570 1571/* 1572 * Parse meshpeering action ie's for open+confirm frames; the 1573 * important bits are returned in the supplied structure. 1574 */ 1575static const struct ieee80211_meshpeer_ie * 1576mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1577 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1578 const uint8_t *frm, const uint8_t *efrm, 1579 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1580{ 1581 struct ieee80211vap *vap = ni->ni_vap; 1582 const struct ieee80211_meshpeer_ie *mpie; 1583 const uint8_t *meshid, *meshconf, *meshpeer; 1584 1585 meshid = meshconf = meshpeer = NULL; 1586 while (efrm - frm > 1) { 1587 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1588 switch (*frm) { 1589 case IEEE80211_ELEMID_MESHID: 1590 meshid = frm; 1591 break; 1592 case IEEE80211_ELEMID_MESHCONF: 1593 meshconf = frm; 1594 break; 1595 case IEEE80211_ELEMID_MESHPEER: 1596 meshpeer = frm; 1597 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1598 memset(mp, 0, sizeof(*mp)); 1599 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1600 /* NB: peer link ID is optional on these frames */ 1601 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1602 mpie->peer_len == 8) { 1603 mp->peer_linkid = 0; 1604 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1605 } else { 1606 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1607 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1608 } 1609 break; 1610 } 1611 frm += frm[1] + 2; 1612 } 1613 1614 /* 1615 * Verify the contents of the frame. Action frames with 1616 * close subtype don't have a Mesh Configuration IE. 1617 * If if fails validation, close the peer link. 1618 */ 1619 KASSERT(meshpeer != NULL && 1620 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1621 ("parsing close action")); 1622 1623 if (mesh_verify_meshid(vap, meshid) || 1624 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1625 mesh_verify_meshconf(vap, meshconf)) { 1626 uint16_t args[3]; 1627 1628 IEEE80211_DISCARD(vap, 1629 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1630 wh, NULL, "%s", "not for our mesh"); 1631 vap->iv_stats.is_rx_mgtdiscard++; 1632 switch (ni->ni_mlstate) { 1633 case IEEE80211_NODE_MESH_IDLE: 1634 case IEEE80211_NODE_MESH_ESTABLISHED: 1635 case IEEE80211_NODE_MESH_HOLDING: 1636 /* ignore */ 1637 break; 1638 case IEEE80211_NODE_MESH_OPENSNT: 1639 case IEEE80211_NODE_MESH_OPENRCV: 1640 case IEEE80211_NODE_MESH_CONFIRMRCV: 1641 args[0] = ni->ni_mlpid; 1642 args[1] = ni->ni_mllid; 1643 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1644 ieee80211_send_action(ni, 1645 IEEE80211_ACTION_CAT_MESHPEERING, 1646 IEEE80211_ACTION_MESHPEERING_CLOSE, 1647 args); 1648 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1649 mesh_peer_timeout_setup(ni); 1650 break; 1651 } 1652 return NULL; 1653 } 1654 return (const struct ieee80211_meshpeer_ie *) mp; 1655} 1656 1657static int 1658mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1659 const struct ieee80211_frame *wh, 1660 const uint8_t *frm, const uint8_t *efrm) 1661{ 1662 struct ieee80211vap *vap = ni->ni_vap; 1663 struct ieee80211_meshpeer_ie ie; 1664 const struct ieee80211_meshpeer_ie *meshpeer; 1665 uint16_t args[3]; 1666 1667 /* +2+2 for action + code + capabilites */ 1668 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1669 IEEE80211_ACTION_MESHPEERING_OPEN); 1670 if (meshpeer == NULL) { 1671 return 0; 1672 } 1673 1674 /* XXX move up */ 1675 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1676 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1677 1678 switch (ni->ni_mlstate) { 1679 case IEEE80211_NODE_MESH_IDLE: 1680 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1681 ni->ni_mllid = meshpeer->peer_llinkid; 1682 ni->ni_mlpid = mesh_generateid(vap); 1683 if (ni->ni_mlpid == 0) 1684 return 0; /* XXX */ 1685 args[0] = ni->ni_mlpid; 1686 /* Announce we're open too... */ 1687 ieee80211_send_action(ni, 1688 IEEE80211_ACTION_CAT_MESHPEERING, 1689 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1690 /* ...and confirm the link. */ 1691 args[0] = ni->ni_mlpid; 1692 args[1] = ni->ni_mllid; 1693 ieee80211_send_action(ni, 1694 IEEE80211_ACTION_CAT_MESHPEERING, 1695 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1696 args); 1697 mesh_peer_timeout_setup(ni); 1698 break; 1699 case IEEE80211_NODE_MESH_OPENRCV: 1700 /* Wrong Link ID */ 1701 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1702 args[0] = ni->ni_mllid; 1703 args[1] = ni->ni_mlpid; 1704 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1705 ieee80211_send_action(ni, 1706 IEEE80211_ACTION_CAT_MESHPEERING, 1707 IEEE80211_ACTION_MESHPEERING_CLOSE, 1708 args); 1709 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1710 mesh_peer_timeout_setup(ni); 1711 break; 1712 } 1713 /* Duplicate open, confirm again. */ 1714 args[0] = ni->ni_mlpid; 1715 args[1] = ni->ni_mllid; 1716 ieee80211_send_action(ni, 1717 IEEE80211_ACTION_CAT_MESHPEERING, 1718 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1719 args); 1720 break; 1721 case IEEE80211_NODE_MESH_OPENSNT: 1722 ni->ni_mllid = meshpeer->peer_llinkid; 1723 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1724 args[0] = ni->ni_mlpid; 1725 args[1] = ni->ni_mllid; 1726 ieee80211_send_action(ni, 1727 IEEE80211_ACTION_CAT_MESHPEERING, 1728 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1729 args); 1730 /* NB: don't setup/clear any timeout */ 1731 break; 1732 case IEEE80211_NODE_MESH_CONFIRMRCV: 1733 if (ni->ni_mlpid != meshpeer->peer_linkid || 1734 ni->ni_mllid != meshpeer->peer_llinkid) { 1735 args[0] = ni->ni_mlpid; 1736 args[1] = ni->ni_mllid; 1737 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1738 ieee80211_send_action(ni, 1739 IEEE80211_ACTION_CAT_MESHPEERING, 1740 IEEE80211_ACTION_MESHPEERING_CLOSE, 1741 args); 1742 mesh_linkchange(ni, 1743 IEEE80211_NODE_MESH_HOLDING); 1744 mesh_peer_timeout_setup(ni); 1745 break; 1746 } 1747 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1748 ni->ni_mllid = meshpeer->peer_llinkid; 1749 args[0] = ni->ni_mlpid; 1750 args[1] = ni->ni_mllid; 1751 ieee80211_send_action(ni, 1752 IEEE80211_ACTION_CAT_MESHPEERING, 1753 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1754 args); 1755 mesh_peer_timeout_stop(ni); 1756 break; 1757 case IEEE80211_NODE_MESH_ESTABLISHED: 1758 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1759 args[0] = ni->ni_mllid; 1760 args[1] = ni->ni_mlpid; 1761 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1762 ieee80211_send_action(ni, 1763 IEEE80211_ACTION_CAT_MESHPEERING, 1764 IEEE80211_ACTION_MESHPEERING_CLOSE, 1765 args); 1766 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1767 mesh_peer_timeout_setup(ni); 1768 break; 1769 } 1770 args[0] = ni->ni_mlpid; 1771 args[1] = ni->ni_mllid; 1772 ieee80211_send_action(ni, 1773 IEEE80211_ACTION_CAT_MESHPEERING, 1774 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1775 args); 1776 break; 1777 case IEEE80211_NODE_MESH_HOLDING: 1778 args[0] = ni->ni_mlpid; 1779 args[1] = meshpeer->peer_llinkid; 1780 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1781 ieee80211_send_action(ni, 1782 IEEE80211_ACTION_CAT_MESHPEERING, 1783 IEEE80211_ACTION_MESHPEERING_CLOSE, 1784 args); 1785 break; 1786 } 1787 return 0; 1788} 1789 1790static int 1791mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1792 const struct ieee80211_frame *wh, 1793 const uint8_t *frm, const uint8_t *efrm) 1794{ 1795 struct ieee80211vap *vap = ni->ni_vap; 1796 struct ieee80211_meshpeer_ie ie; 1797 const struct ieee80211_meshpeer_ie *meshpeer; 1798 uint16_t args[3]; 1799 1800 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1801 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1802 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1803 if (meshpeer == NULL) { 1804 return 0; 1805 } 1806 1807 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1808 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1809 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1810 1811 switch (ni->ni_mlstate) { 1812 case IEEE80211_NODE_MESH_OPENRCV: 1813 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1814 mesh_peer_timeout_stop(ni); 1815 break; 1816 case IEEE80211_NODE_MESH_OPENSNT: 1817 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1818 break; 1819 case IEEE80211_NODE_MESH_HOLDING: 1820 args[0] = ni->ni_mlpid; 1821 args[1] = meshpeer->peer_llinkid; 1822 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1823 ieee80211_send_action(ni, 1824 IEEE80211_ACTION_CAT_MESHPEERING, 1825 IEEE80211_ACTION_MESHPEERING_CLOSE, 1826 args); 1827 break; 1828 case IEEE80211_NODE_MESH_CONFIRMRCV: 1829 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1830 args[0] = ni->ni_mlpid; 1831 args[1] = ni->ni_mllid; 1832 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1833 ieee80211_send_action(ni, 1834 IEEE80211_ACTION_CAT_MESHPEERING, 1835 IEEE80211_ACTION_MESHPEERING_CLOSE, 1836 args); 1837 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1838 mesh_peer_timeout_setup(ni); 1839 } 1840 break; 1841 default: 1842 IEEE80211_DISCARD(vap, 1843 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1844 wh, NULL, "received confirm in invalid state %d", 1845 ni->ni_mlstate); 1846 vap->iv_stats.is_rx_mgtdiscard++; 1847 break; 1848 } 1849 return 0; 1850} 1851 1852static int 1853mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1854 const struct ieee80211_frame *wh, 1855 const uint8_t *frm, const uint8_t *efrm) 1856{ 1857 uint16_t args[3]; 1858 1859 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1860 ni, "%s", "recv PEER CLOSE"); 1861 1862 switch (ni->ni_mlstate) { 1863 case IEEE80211_NODE_MESH_IDLE: 1864 /* ignore */ 1865 break; 1866 case IEEE80211_NODE_MESH_OPENRCV: 1867 case IEEE80211_NODE_MESH_OPENSNT: 1868 case IEEE80211_NODE_MESH_CONFIRMRCV: 1869 case IEEE80211_NODE_MESH_ESTABLISHED: 1870 args[0] = ni->ni_mlpid; 1871 args[1] = ni->ni_mllid; 1872 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1873 ieee80211_send_action(ni, 1874 IEEE80211_ACTION_CAT_MESHPEERING, 1875 IEEE80211_ACTION_MESHPEERING_CLOSE, 1876 args); 1877 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1878 mesh_peer_timeout_setup(ni); 1879 break; 1880 case IEEE80211_NODE_MESH_HOLDING: 1881 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1882 mesh_peer_timeout_setup(ni); 1883 break; 1884 } 1885 return 0; 1886} 1887 1888/* 1889 * Link Metric handling. 1890 */ 1891static int 1892mesh_recv_action_meshlmetric(struct ieee80211_node *ni, 1893 const struct ieee80211_frame *wh, 1894 const uint8_t *frm, const uint8_t *efrm) 1895{ 1896 const struct ieee80211_meshlmetric_ie *ie = 1897 (const struct ieee80211_meshlmetric_ie *) 1898 (frm+2); /* action + code */ 1899 struct ieee80211_meshlmetric_ie lm_rep; 1900 1901 if (ie->lm_flags & IEEE80211_MESH_LMETRIC_FLAGS_REQ) { 1902 lm_rep.lm_flags = 0; 1903 lm_rep.lm_metric = mesh_airtime_calc(ni); 1904 ieee80211_send_action(ni, 1905 IEEE80211_ACTION_CAT_MESH, 1906 IEEE80211_ACTION_MESH_LMETRIC, 1907 &lm_rep); 1908 } 1909 /* XXX: else do nothing for now */ 1910 return 0; 1911} 1912 1913static int 1914mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1915{ 1916 struct ieee80211_bpf_params params; 1917 1918 memset(¶ms, 0, sizeof(params)); 1919 params.ibp_pri = WME_AC_VO; 1920 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1921 /* XXX ucast/mcast */ 1922 params.ibp_try0 = ni->ni_txparms->maxretry; 1923 params.ibp_power = ni->ni_txpower; 1924 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1925 ¶ms); 1926} 1927 1928#define ADDSHORT(frm, v) do { \ 1929 frm[0] = (v) & 0xff; \ 1930 frm[1] = (v) >> 8; \ 1931 frm += 2; \ 1932} while (0) 1933#define ADDWORD(frm, v) do { \ 1934 frm[0] = (v) & 0xff; \ 1935 frm[1] = ((v) >> 8) & 0xff; \ 1936 frm[2] = ((v) >> 16) & 0xff; \ 1937 frm[3] = ((v) >> 24) & 0xff; \ 1938 frm += 4; \ 1939} while (0) 1940 1941static int 1942mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1943 int category, int action, void *args0) 1944{ 1945 struct ieee80211vap *vap = ni->ni_vap; 1946 struct ieee80211com *ic = ni->ni_ic; 1947 uint16_t *args = args0; 1948 const struct ieee80211_rateset *rs; 1949 struct mbuf *m; 1950 uint8_t *frm; 1951 1952 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1953 "send PEER OPEN action: localid 0x%x", args[0]); 1954 1955 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1956 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1957 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1958 ieee80211_ref_node(ni); 1959 1960 m = ieee80211_getmgtframe(&frm, 1961 ic->ic_headroom + sizeof(struct ieee80211_frame), 1962 sizeof(uint16_t) /* action+category */ 1963 + sizeof(uint16_t) /* capabilites */ 1964 + 2 + IEEE80211_RATE_SIZE 1965 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1966 + 2 + IEEE80211_MESHID_LEN 1967 + sizeof(struct ieee80211_meshconf_ie) 1968 + sizeof(struct ieee80211_meshpeer_ie) 1969 ); 1970 if (m != NULL) { 1971 /* 1972 * mesh peer open action frame format: 1973 * [1] category 1974 * [1] action 1975 * [2] capabilities 1976 * [tlv] rates 1977 * [tlv] xrates 1978 * [tlv] mesh id 1979 * [tlv] mesh conf 1980 * [tlv] mesh peer link mgmt 1981 */ 1982 *frm++ = category; 1983 *frm++ = action; 1984 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1985 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1986 frm = ieee80211_add_rates(frm, rs); 1987 frm = ieee80211_add_xrates(frm, rs); 1988 frm = ieee80211_add_meshid(frm, vap); 1989 frm = ieee80211_add_meshconf(frm, vap); 1990 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1991 args[0], 0, 0); 1992 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1993 return mesh_send_action(ni, m); 1994 } else { 1995 vap->iv_stats.is_tx_nobuf++; 1996 ieee80211_free_node(ni); 1997 return ENOMEM; 1998 } 1999} 2000 2001static int 2002mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 2003 int category, int action, void *args0) 2004{ 2005 struct ieee80211vap *vap = ni->ni_vap; 2006 struct ieee80211com *ic = ni->ni_ic; 2007 uint16_t *args = args0; 2008 const struct ieee80211_rateset *rs; 2009 struct mbuf *m; 2010 uint8_t *frm; 2011 2012 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2013 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 2014 args[0], args[1]); 2015 2016 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2017 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2018 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2019 ieee80211_ref_node(ni); 2020 2021 m = ieee80211_getmgtframe(&frm, 2022 ic->ic_headroom + sizeof(struct ieee80211_frame), 2023 sizeof(uint16_t) /* action+category */ 2024 + sizeof(uint16_t) /* capabilites */ 2025 + sizeof(uint16_t) /* status code */ 2026 + sizeof(uint16_t) /* AID */ 2027 + 2 + IEEE80211_RATE_SIZE 2028 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 2029 + 2 + IEEE80211_MESHID_LEN 2030 + sizeof(struct ieee80211_meshconf_ie) 2031 + sizeof(struct ieee80211_meshpeer_ie) 2032 ); 2033 if (m != NULL) { 2034 /* 2035 * mesh peer confirm action frame format: 2036 * [1] category 2037 * [1] action 2038 * [2] capabilities 2039 * [2] status code 2040 * [2] association id (peer ID) 2041 * [tlv] rates 2042 * [tlv] xrates 2043 * [tlv] mesh id 2044 * [tlv] mesh conf 2045 * [tlv] mesh peer link mgmt 2046 */ 2047 *frm++ = category; 2048 *frm++ = action; 2049 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2050 ADDSHORT(frm, 0); /* status code */ 2051 ADDSHORT(frm, args[1]); /* AID */ 2052 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2053 frm = ieee80211_add_rates(frm, rs); 2054 frm = ieee80211_add_xrates(frm, rs); 2055 frm = ieee80211_add_meshid(frm, vap); 2056 frm = ieee80211_add_meshconf(frm, vap); 2057 frm = ieee80211_add_meshpeer(frm, 2058 IEEE80211_MESH_PEER_LINK_CONFIRM, 2059 args[0], args[1], 0); 2060 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2061 return mesh_send_action(ni, m); 2062 } else { 2063 vap->iv_stats.is_tx_nobuf++; 2064 ieee80211_free_node(ni); 2065 return ENOMEM; 2066 } 2067} 2068 2069static int 2070mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2071 int category, int action, void *args0) 2072{ 2073 struct ieee80211vap *vap = ni->ni_vap; 2074 struct ieee80211com *ic = ni->ni_ic; 2075 uint16_t *args = args0; 2076 struct mbuf *m; 2077 uint8_t *frm; 2078 2079 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2080 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2081 args[0], args[1], args[2]); 2082 2083 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2084 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2085 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2086 ieee80211_ref_node(ni); 2087 2088 m = ieee80211_getmgtframe(&frm, 2089 ic->ic_headroom + sizeof(struct ieee80211_frame), 2090 sizeof(uint16_t) /* action+category */ 2091 + sizeof(uint16_t) /* reason code */ 2092 + 2 + IEEE80211_MESHID_LEN 2093 + sizeof(struct ieee80211_meshpeer_ie) 2094 ); 2095 if (m != NULL) { 2096 /* 2097 * mesh peer close action frame format: 2098 * [1] category 2099 * [1] action 2100 * [2] reason code 2101 * [tlv] mesh id 2102 * [tlv] mesh peer link mgmt 2103 */ 2104 *frm++ = category; 2105 *frm++ = action; 2106 ADDSHORT(frm, args[2]); /* reason code */ 2107 frm = ieee80211_add_meshid(frm, vap); 2108 frm = ieee80211_add_meshpeer(frm, 2109 IEEE80211_MESH_PEER_LINK_CLOSE, 2110 args[0], args[1], args[2]); 2111 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2112 return mesh_send_action(ni, m); 2113 } else { 2114 vap->iv_stats.is_tx_nobuf++; 2115 ieee80211_free_node(ni); 2116 return ENOMEM; 2117 } 2118} 2119 2120static int 2121mesh_send_action_meshlmetric(struct ieee80211_node *ni, 2122 int category, int action, void *arg0) 2123{ 2124 struct ieee80211vap *vap = ni->ni_vap; 2125 struct ieee80211com *ic = ni->ni_ic; 2126 struct ieee80211_meshlmetric_ie *ie = arg0; 2127 struct mbuf *m; 2128 uint8_t *frm; 2129 2130 if (ie->lm_flags & IEEE80211_MESH_LMETRIC_FLAGS_REQ) { 2131 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2132 ni, "%s", "send LINK METRIC REQUEST action"); 2133 } else { 2134 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2135 ni, "send LINK METRIC REPLY action: metric 0x%x", 2136 ie->lm_metric); 2137 } 2138 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2139 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2140 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2141 ieee80211_ref_node(ni); 2142 2143 m = ieee80211_getmgtframe(&frm, 2144 ic->ic_headroom + sizeof(struct ieee80211_frame), 2145 sizeof(uint16_t) + /* action+category */ 2146 sizeof(struct ieee80211_meshlmetric_ie) 2147 ); 2148 if (m != NULL) { 2149 /* 2150 * mesh link metric 2151 * [1] category 2152 * [1] action 2153 * [tlv] mesh link metric 2154 */ 2155 *frm++ = category; 2156 *frm++ = action; 2157 frm = ieee80211_add_meshlmetric(frm, 2158 ie->lm_flags, ie->lm_metric); 2159 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2160 return mesh_send_action(ni, m); 2161 } else { 2162 vap->iv_stats.is_tx_nobuf++; 2163 ieee80211_free_node(ni); 2164 return ENOMEM; 2165 } 2166} 2167 2168static void 2169mesh_peer_timeout_setup(struct ieee80211_node *ni) 2170{ 2171 switch (ni->ni_mlstate) { 2172 case IEEE80211_NODE_MESH_HOLDING: 2173 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2174 break; 2175 case IEEE80211_NODE_MESH_CONFIRMRCV: 2176 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2177 break; 2178 case IEEE80211_NODE_MESH_IDLE: 2179 ni->ni_mltval = 0; 2180 break; 2181 default: 2182 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2183 break; 2184 } 2185 if (ni->ni_mltval) 2186 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2187 mesh_peer_timeout_cb, ni); 2188} 2189 2190/* 2191 * Same as above but backoffs timer statisically 50%. 2192 */ 2193static void 2194mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2195{ 2196 uint32_t r; 2197 2198 r = arc4random(); 2199 ni->ni_mltval += r % ni->ni_mltval; 2200 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2201 ni); 2202} 2203 2204static __inline void 2205mesh_peer_timeout_stop(struct ieee80211_node *ni) 2206{ 2207 callout_drain(&ni->ni_mltimer); 2208} 2209 2210/* 2211 * Mesh Peer Link Management FSM timeout handling. 2212 */ 2213static void 2214mesh_peer_timeout_cb(void *arg) 2215{ 2216 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2217 uint16_t args[3]; 2218 2219 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2220 ni, "mesh link timeout, state %d, retry counter %d", 2221 ni->ni_mlstate, ni->ni_mlrcnt); 2222 2223 switch (ni->ni_mlstate) { 2224 case IEEE80211_NODE_MESH_IDLE: 2225 case IEEE80211_NODE_MESH_ESTABLISHED: 2226 break; 2227 case IEEE80211_NODE_MESH_OPENSNT: 2228 case IEEE80211_NODE_MESH_OPENRCV: 2229 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2230 args[0] = ni->ni_mlpid; 2231 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2232 ieee80211_send_action(ni, 2233 IEEE80211_ACTION_CAT_MESHPEERING, 2234 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2235 ni->ni_mlrcnt = 0; 2236 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2237 mesh_peer_timeout_setup(ni); 2238 } else { 2239 args[0] = ni->ni_mlpid; 2240 ieee80211_send_action(ni, 2241 IEEE80211_ACTION_CAT_MESHPEERING, 2242 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2243 ni->ni_mlrcnt++; 2244 mesh_peer_timeout_backoff(ni); 2245 } 2246 break; 2247 case IEEE80211_NODE_MESH_CONFIRMRCV: 2248 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2249 args[0] = ni->ni_mlpid; 2250 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2251 ieee80211_send_action(ni, 2252 IEEE80211_ACTION_CAT_MESHPEERING, 2253 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2254 ni->ni_mlrcnt = 0; 2255 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2256 mesh_peer_timeout_setup(ni); 2257 } else { 2258 ni->ni_mlrcnt++; 2259 mesh_peer_timeout_setup(ni); 2260 } 2261 break; 2262 case IEEE80211_NODE_MESH_HOLDING: 2263 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2264 break; 2265 } 2266} 2267 2268static int 2269mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2270{ 2271 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2272 2273 if (ie == NULL || ie[1] != ms->ms_idlen) 2274 return 1; 2275 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2276} 2277 2278/* 2279 * Check if we are using the same algorithms for this mesh. 2280 */ 2281static int 2282mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2283{ 2284 const struct ieee80211_meshconf_ie *meshconf = 2285 (const struct ieee80211_meshconf_ie *) ie; 2286 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2287 2288 if (meshconf == NULL) 2289 return 1; 2290 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2291 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2292 "unknown path selection algorithm: 0x%x\n", 2293 meshconf->conf_pselid); 2294 return 1; 2295 } 2296 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2297 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2298 "unknown path metric algorithm: 0x%x\n", 2299 meshconf->conf_pmetid); 2300 return 1; 2301 } 2302 if (meshconf->conf_ccid != 0) { 2303 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2304 "unknown congestion control algorithm: 0x%x\n", 2305 meshconf->conf_ccid); 2306 return 1; 2307 } 2308 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2309 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2310 "unknown sync algorithm: 0x%x\n", 2311 meshconf->conf_syncid); 2312 return 1; 2313 } 2314 if (meshconf->conf_authid != 0) { 2315 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2316 "unknown auth auth algorithm: 0x%x\n", 2317 meshconf->conf_pselid); 2318 return 1; 2319 } 2320 /* Not accepting peers */ 2321 if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) { 2322 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2323 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2324 return 1; 2325 } 2326 return 0; 2327} 2328 2329static int 2330mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2331 const uint8_t *ie) 2332{ 2333 const struct ieee80211_meshpeer_ie *meshpeer = 2334 (const struct ieee80211_meshpeer_ie *) ie; 2335 2336 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2337 meshpeer->peer_len > 10) 2338 return 1; 2339 switch (subtype) { 2340 case IEEE80211_MESH_PEER_LINK_OPEN: 2341 if (meshpeer->peer_len != 6) 2342 return 1; 2343 break; 2344 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2345 if (meshpeer->peer_len != 8) 2346 return 1; 2347 break; 2348 case IEEE80211_MESH_PEER_LINK_CLOSE: 2349 if (meshpeer->peer_len < 8) 2350 return 1; 2351 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2352 return 1; 2353 if (meshpeer->peer_rcode == 0) 2354 return 1; 2355 break; 2356 } 2357 return 0; 2358} 2359 2360/* 2361 * Add a Mesh ID IE to a frame. 2362 */ 2363uint8_t * 2364ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2365{ 2366 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2367 2368 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2369 2370 *frm++ = IEEE80211_ELEMID_MESHID; 2371 *frm++ = ms->ms_idlen; 2372 memcpy(frm, ms->ms_id, ms->ms_idlen); 2373 return frm + ms->ms_idlen; 2374} 2375 2376/* 2377 * Add a Mesh Configuration IE to a frame. 2378 * For now just use HWMP routing, Airtime link metric, Null Congestion 2379 * Signaling, Null Sync Protocol and Null Authentication. 2380 */ 2381uint8_t * 2382ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2383{ 2384 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2385 uint16_t caps; 2386 2387 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2388 2389 *frm++ = IEEE80211_ELEMID_MESHCONF; 2390 *frm++ = IEEE80211_MESH_CONF_SZ; 2391 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2392 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2393 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2394 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2395 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2396 /* NB: set the number of neighbors before the rest */ 2397 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2398 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2399 *frm |= IEEE80211_MESHCONF_FORM_MP; 2400 frm += 1; 2401 caps = 0; 2402 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2403 caps |= IEEE80211_MESHCONF_CAP_AP; 2404 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2405 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2406 *frm++ = caps; 2407 return frm; 2408} 2409 2410/* 2411 * Add a Mesh Peer Management IE to a frame. 2412 */ 2413uint8_t * 2414ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2415 uint16_t peerid, uint16_t reason) 2416{ 2417 /* XXX change for AH */ 2418 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2419 2420 KASSERT(localid != 0, ("localid == 0")); 2421 2422 *frm++ = IEEE80211_ELEMID_MESHPEER; 2423 switch (subtype) { 2424 case IEEE80211_MESH_PEER_LINK_OPEN: 2425 *frm++ = 6; /* length */ 2426 memcpy(frm, meshpeerproto, 4); 2427 frm += 4; 2428 ADDSHORT(frm, localid); /* local ID */ 2429 break; 2430 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2431 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2432 *frm++ = 8; /* length */ 2433 memcpy(frm, meshpeerproto, 4); 2434 frm += 4; 2435 ADDSHORT(frm, localid); /* local ID */ 2436 ADDSHORT(frm, peerid); /* peer ID */ 2437 break; 2438 case IEEE80211_MESH_PEER_LINK_CLOSE: 2439 if (peerid) 2440 *frm++ = 10; /* length */ 2441 else 2442 *frm++ = 8; /* length */ 2443 memcpy(frm, meshpeerproto, 4); 2444 frm += 4; 2445 ADDSHORT(frm, localid); /* local ID */ 2446 if (peerid) 2447 ADDSHORT(frm, peerid); /* peer ID */ 2448 ADDSHORT(frm, reason); 2449 break; 2450 } 2451 return frm; 2452} 2453 2454/* 2455 * Compute an Airtime Link Metric for the link with this node. 2456 * 2457 * Based on Draft 3.0 spec (11B.10, p.149). 2458 */ 2459/* 2460 * Max 802.11s overhead. 2461 */ 2462#define IEEE80211_MESH_MAXOVERHEAD \ 2463 (sizeof(struct ieee80211_qosframe_addr4) \ 2464 + sizeof(struct ieee80211_meshcntl_ae11) \ 2465 + sizeof(struct llc) \ 2466 + IEEE80211_ADDR_LEN \ 2467 + IEEE80211_WEP_IVLEN \ 2468 + IEEE80211_WEP_KIDLEN \ 2469 + IEEE80211_WEP_CRCLEN \ 2470 + IEEE80211_WEP_MICLEN \ 2471 + IEEE80211_CRC_LEN) 2472uint32_t 2473mesh_airtime_calc(struct ieee80211_node *ni) 2474{ 2475#define M_BITS 8 2476#define S_FACTOR (2 * M_BITS) 2477 struct ieee80211com *ic = ni->ni_ic; 2478 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2479 const static int nbits = 8192 << M_BITS; 2480 uint32_t overhead, rate, errrate; 2481 uint64_t res; 2482 2483 /* Time to transmit a frame */ 2484 rate = ni->ni_txrate; 2485 overhead = ieee80211_compute_duration(ic->ic_rt, 2486 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2487 /* Error rate in percentage */ 2488 /* XXX assuming small failures are ok */ 2489 errrate = (((ifp->if_oerrors + 2490 ifp->if_ierrors) / 100) << M_BITS) / 100; 2491 res = (overhead + (nbits / rate)) * 2492 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2493 2494 return (uint32_t)(res >> S_FACTOR); 2495#undef M_BITS 2496#undef S_FACTOR 2497} 2498 2499/* 2500 * Add a Mesh Link Metric report IE to a frame. 2501 */ 2502uint8_t * 2503ieee80211_add_meshlmetric(uint8_t *frm, uint8_t flags, uint32_t metric) 2504{ 2505 *frm++ = IEEE80211_ELEMID_MESHLINK; 2506 *frm++ = 5; 2507 *frm++ = flags; 2508 ADDWORD(frm, metric); 2509 return frm; 2510} 2511#undef ADDSHORT 2512#undef ADDWORD 2513 2514/* 2515 * Initialize any mesh-specific node state. 2516 */ 2517void 2518ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2519{ 2520 ni->ni_flags |= IEEE80211_NODE_QOS; 2521 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2522} 2523 2524/* 2525 * Cleanup any mesh-specific node state. 2526 */ 2527void 2528ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2529{ 2530 struct ieee80211vap *vap = ni->ni_vap; 2531 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2532 2533 callout_drain(&ni->ni_mltimer); 2534 /* NB: short-circuit callbacks after mesh_vdetach */ 2535 if (vap->iv_mesh != NULL) 2536 ms->ms_ppath->mpp_peerdown(ni); 2537} 2538 2539void 2540ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2541{ 2542 ni->ni_meshidlen = ie[1]; 2543 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2544} 2545 2546/* 2547 * Setup mesh-specific node state on neighbor discovery. 2548 */ 2549void 2550ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2551 const struct ieee80211_frame *wh, 2552 const struct ieee80211_scanparams *sp) 2553{ 2554 ieee80211_parse_meshid(ni, sp->meshid); 2555} 2556 2557void 2558ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2559 struct ieee80211_beacon_offsets *bo) 2560{ 2561 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2562 2563 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2564 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2565 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2566 } 2567} 2568 2569static int 2570mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2571{ 2572 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2573 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2574 struct ieee80211_mesh_route *rt; 2575 struct ieee80211req_mesh_route *imr; 2576 size_t len, off; 2577 uint8_t *p; 2578 int error; 2579 2580 if (vap->iv_opmode != IEEE80211_M_MBSS) 2581 return ENOSYS; 2582 2583 error = 0; 2584 switch (ireq->i_type) { 2585 case IEEE80211_IOC_MESH_ID: 2586 ireq->i_len = ms->ms_idlen; 2587 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2588 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2589 break; 2590 case IEEE80211_IOC_MESH_AP: 2591 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2592 break; 2593 case IEEE80211_IOC_MESH_FWRD: 2594 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2595 break; 2596 case IEEE80211_IOC_MESH_TTL: 2597 ireq->i_val = ms->ms_ttl; 2598 break; 2599 case IEEE80211_IOC_MESH_RTCMD: 2600 switch (ireq->i_val) { 2601 case IEEE80211_MESH_RTCMD_LIST: 2602 len = 0; 2603 MESH_RT_LOCK(ms); 2604 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2605 len += sizeof(*imr); 2606 } 2607 MESH_RT_UNLOCK(ms); 2608 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2609 ireq->i_len = len; 2610 return ENOMEM; 2611 } 2612 ireq->i_len = len; 2613 /* XXX M_WAIT? */ 2614 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2615 if (p == NULL) 2616 return ENOMEM; 2617 off = 0; 2618 MESH_RT_LOCK(ms); 2619 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2620 if (off >= len) 2621 break; 2622 imr = (struct ieee80211req_mesh_route *) 2623 (p + off); 2624 imr->imr_flags = rt->rt_flags; 2625 IEEE80211_ADDR_COPY(imr->imr_dest, 2626 rt->rt_dest); 2627 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2628 rt->rt_nexthop); 2629 imr->imr_metric = rt->rt_metric; 2630 imr->imr_nhops = rt->rt_nhops; 2631 imr->imr_lifetime = rt->rt_lifetime; 2632 imr->imr_lastmseq = rt->rt_lastmseq; 2633 off += sizeof(*imr); 2634 } 2635 MESH_RT_UNLOCK(ms); 2636 error = copyout(p, (uint8_t *)ireq->i_data, 2637 ireq->i_len); 2638 free(p, M_TEMP); 2639 break; 2640 case IEEE80211_MESH_RTCMD_FLUSH: 2641 case IEEE80211_MESH_RTCMD_ADD: 2642 case IEEE80211_MESH_RTCMD_DELETE: 2643 return EINVAL; 2644 default: 2645 return ENOSYS; 2646 } 2647 break; 2648 case IEEE80211_IOC_MESH_PR_METRIC: 2649 len = strlen(ms->ms_pmetric->mpm_descr); 2650 if (ireq->i_len < len) 2651 return EINVAL; 2652 ireq->i_len = len; 2653 error = copyout(ms->ms_pmetric->mpm_descr, 2654 (uint8_t *)ireq->i_data, len); 2655 break; 2656 case IEEE80211_IOC_MESH_PR_PATH: 2657 len = strlen(ms->ms_ppath->mpp_descr); 2658 if (ireq->i_len < len) 2659 return EINVAL; 2660 ireq->i_len = len; 2661 error = copyout(ms->ms_ppath->mpp_descr, 2662 (uint8_t *)ireq->i_data, len); 2663 break; 2664 default: 2665 return ENOSYS; 2666 } 2667 2668 return error; 2669} 2670IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2671 2672static int 2673mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2674{ 2675 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2676 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2677 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2678 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2679 int error; 2680 2681 if (vap->iv_opmode != IEEE80211_M_MBSS) 2682 return ENOSYS; 2683 2684 error = 0; 2685 switch (ireq->i_type) { 2686 case IEEE80211_IOC_MESH_ID: 2687 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2688 return EINVAL; 2689 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2690 if (error != 0) 2691 break; 2692 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2693 ms->ms_idlen = ireq->i_len; 2694 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2695 error = ENETRESET; 2696 break; 2697 case IEEE80211_IOC_MESH_AP: 2698 if (ireq->i_val) 2699 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2700 else 2701 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2702 error = ENETRESET; 2703 break; 2704 case IEEE80211_IOC_MESH_FWRD: 2705 if (ireq->i_val) 2706 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2707 else 2708 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2709 break; 2710 case IEEE80211_IOC_MESH_TTL: 2711 ms->ms_ttl = (uint8_t) ireq->i_val; 2712 break; 2713 case IEEE80211_IOC_MESH_RTCMD: 2714 switch (ireq->i_val) { 2715 case IEEE80211_MESH_RTCMD_LIST: 2716 return EINVAL; 2717 case IEEE80211_MESH_RTCMD_FLUSH: 2718 ieee80211_mesh_rt_flush(vap); 2719 break; 2720 case IEEE80211_MESH_RTCMD_ADD: 2721 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2722 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2723 return EINVAL; 2724 error = copyin(ireq->i_data, &tmpaddr, 2725 IEEE80211_ADDR_LEN); 2726 if (error == 0) 2727 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2728 break; 2729 case IEEE80211_MESH_RTCMD_DELETE: 2730 ieee80211_mesh_rt_del(vap, ireq->i_data); 2731 break; 2732 default: 2733 return ENOSYS; 2734 } 2735 break; 2736 case IEEE80211_IOC_MESH_PR_METRIC: 2737 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2738 if (error == 0) { 2739 error = mesh_select_proto_metric(vap, tmpproto); 2740 if (error == 0) 2741 error = ENETRESET; 2742 } 2743 break; 2744 case IEEE80211_IOC_MESH_PR_PATH: 2745 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2746 if (error == 0) { 2747 error = mesh_select_proto_path(vap, tmpproto); 2748 if (error == 0) 2749 error = ENETRESET; 2750 } 2751 break; 2752 default: 2753 return ENOSYS; 2754 } 2755 return error; 2756} 2757IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2758