ieee80211_mesh.c revision 195908
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 195908 2009-07-27 14:22:09Z rpaulo $"); 32#endif 33 34/* 35 * IEEE 802.11s Mesh Point (MBSS) support. 36 * 37 * Based on March 2009, D3.0 802.11s draft spec. 38 */ 39#include "opt_inet.h" 40#include "opt_wlan.h" 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/mbuf.h> 45#include <sys/malloc.h> 46#include <sys/kernel.h> 47 48#include <sys/socket.h> 49#include <sys/sockio.h> 50#include <sys/endian.h> 51#include <sys/errno.h> 52#include <sys/proc.h> 53#include <sys/sysctl.h> 54 55#include <net/if.h> 56#include <net/if_media.h> 57#include <net/if_llc.h> 58#include <net/ethernet.h> 59 60#include <net80211/ieee80211_var.h> 61#include <net80211/ieee80211_action.h> 62#include <net80211/ieee80211_input.h> 63#include <net80211/ieee80211_mesh.h> 64 65static void mesh_rt_flush_invalid(struct ieee80211vap *); 66static int mesh_select_proto_path(struct ieee80211vap *, const char *); 67static int mesh_select_proto_metric(struct ieee80211vap *, const char *); 68static void mesh_vattach(struct ieee80211vap *); 69static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); 70static void mesh_rt_cleanup_cb(void *); 71static void mesh_linkchange(struct ieee80211_node *, 72 enum ieee80211_mesh_mlstate); 73static void mesh_checkid(void *, struct ieee80211_node *); 74static uint32_t mesh_generateid(struct ieee80211vap *); 75static int mesh_checkpseq(struct ieee80211vap *, 76 const uint8_t [IEEE80211_ADDR_LEN], uint32_t); 77static struct ieee80211_node * 78 mesh_find_txnode(struct ieee80211vap *, 79 const uint8_t [IEEE80211_ADDR_LEN]); 80static void mesh_forward(struct ieee80211vap *, struct mbuf *, 81 const struct ieee80211_meshcntl *); 82static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int); 83static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 84 int, int); 85static void mesh_peer_timeout_setup(struct ieee80211_node *); 86static void mesh_peer_timeout_backoff(struct ieee80211_node *); 87static void mesh_peer_timeout_cb(void *); 88static __inline void 89 mesh_peer_timeout_stop(struct ieee80211_node *); 90static int mesh_verify_meshpeerver(struct ieee80211vap *, const uint8_t *); 91static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 92static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 93static int mesh_verify_meshpeer(struct ieee80211vap *, const uint8_t *); 94uint32_t mesh_airtime_calc(struct ieee80211_node *); 95 96/* 97 * Timeout values come from the specification and are in milliseconds. 98 */ 99SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 100 "IEEE 802.11s parameters"); 101static int ieee80211_mesh_retrytimeout = -1; 102SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 103 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 104 "Retry timeout (msec)"); 105static int ieee80211_mesh_holdingtimeout = -1; 106SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 107 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 108 "Holding state timeout (msec)"); 109static int ieee80211_mesh_confirmtimeout = -1; 110SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 111 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 112 "Confirm state timeout (msec)"); 113static int ieee80211_mesh_maxretries = 2; 114SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 115 &ieee80211_mesh_maxretries, 0, 116 "Maximum retries during peer link establishment"); 117 118static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 119 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 120 121static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 122static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 123static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 124static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req; 125static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep; 126 127static ieee80211_send_action_func mesh_send_action_meshpeering_open; 128static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 129static ieee80211_send_action_func mesh_send_action_meshpeering_close; 130static ieee80211_send_action_func mesh_send_action_meshlink_request; 131static ieee80211_send_action_func mesh_send_action_meshlink_reply; 132 133static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 134 .mpm_descr = "AIRTIME", 135 .mpm_ie = IEEE80211_MESHCONF_AIRTIME, 136 .mpm_metric = mesh_airtime_calc, 137}; 138 139static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 140static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 141 142#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) 143#define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 144#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 145 146MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 147 148/* 149 * Helper functions to manipulate the Mesh routing table. 150 */ 151 152static struct ieee80211_mesh_route * 153mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 154 const uint8_t dest[IEEE80211_ADDR_LEN]) 155{ 156 struct ieee80211_mesh_route *rt; 157 158 MESH_RT_LOCK_ASSERT(ms); 159 160 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 161 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 162 return rt; 163 } 164 return NULL; 165} 166 167static struct ieee80211_mesh_route * 168mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 169 const uint8_t dest[IEEE80211_ADDR_LEN]) 170{ 171 struct ieee80211_mesh_route *rt; 172 173 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 174 ("%s: adding broadcast to the routing table", __func__)); 175 176 MESH_RT_LOCK_ASSERT(ms); 177 178 rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 179 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 180 if (rt != NULL) { 181 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 182 rt->rt_priv = (void *)ALIGN(&rt[1]); 183 rt->rt_crtime = ticks; 184 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 185 } 186 return rt; 187} 188 189struct ieee80211_mesh_route * 190ieee80211_mesh_rt_find(struct ieee80211vap *vap, 191 const uint8_t dest[IEEE80211_ADDR_LEN]) 192{ 193 struct ieee80211_mesh_state *ms = vap->iv_mesh; 194 struct ieee80211_mesh_route *rt; 195 196 MESH_RT_LOCK(ms); 197 rt = mesh_rt_find_locked(ms, dest); 198 MESH_RT_UNLOCK(ms); 199 return rt; 200} 201 202struct ieee80211_mesh_route * 203ieee80211_mesh_rt_add(struct ieee80211vap *vap, 204 const uint8_t dest[IEEE80211_ADDR_LEN]) 205{ 206 struct ieee80211_mesh_state *ms = vap->iv_mesh; 207 struct ieee80211_mesh_route *rt; 208 209 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 210 ("%s: duplicate entry in the routing table", __func__)); 211 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 212 ("%s: adding self to the routing table", __func__)); 213 214 MESH_RT_LOCK(ms); 215 rt = mesh_rt_add_locked(ms, dest); 216 MESH_RT_UNLOCK(ms); 217 return rt; 218} 219 220/* 221 * Add a proxy route (as needed) for the specified destination. 222 */ 223void 224ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 225 const uint8_t dest[IEEE80211_ADDR_LEN]) 226{ 227 struct ieee80211_mesh_state *ms = vap->iv_mesh; 228 struct ieee80211_mesh_route *rt; 229 230 MESH_RT_LOCK(ms); 231 rt = mesh_rt_find_locked(ms, dest); 232 if (rt == NULL) { 233 rt = mesh_rt_add_locked(ms, dest); 234 if (rt == NULL) { 235 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 236 "%s", "unable to add proxy entry"); 237 vap->iv_stats.is_mesh_rtaddfailed++; 238 } else { 239 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 240 "%s", "add proxy entry"); 241 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 242 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 243 | IEEE80211_MESHRT_FLAGS_PROXY; 244 } 245 /* XXX assert PROXY? */ 246 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 247 struct ieee80211com *ic = vap->iv_ic; 248 /* 249 * Fix existing entry created by received frames from 250 * stations that have some memory of dest. We also 251 * flush any frames held on the staging queue; delivering 252 * them is too much trouble right now. 253 */ 254 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 255 "%s", "fix proxy entry"); 256 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 257 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 258 | IEEE80211_MESHRT_FLAGS_PROXY; 259 /* XXX belongs in hwmp */ 260 ieee80211_ageq_drain_node(&ic->ic_stageq, 261 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 262 /* XXX stat? */ 263 } 264 MESH_RT_UNLOCK(ms); 265} 266 267static __inline void 268mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 269{ 270 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 271 free(rt, M_80211_MESH_RT); 272} 273 274void 275ieee80211_mesh_rt_del(struct ieee80211vap *vap, 276 const uint8_t dest[IEEE80211_ADDR_LEN]) 277{ 278 struct ieee80211_mesh_state *ms = vap->iv_mesh; 279 struct ieee80211_mesh_route *rt, *next; 280 281 MESH_RT_LOCK(ms); 282 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 283 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 284 mesh_rt_del(ms, rt); 285 MESH_RT_UNLOCK(ms); 286 return; 287 } 288 } 289 MESH_RT_UNLOCK(ms); 290} 291 292void 293ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 294{ 295 struct ieee80211_mesh_state *ms = vap->iv_mesh; 296 struct ieee80211_mesh_route *rt, *next; 297 298 if (ms == NULL) 299 return; 300 MESH_RT_LOCK(ms); 301 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 302 mesh_rt_del(ms, rt); 303 MESH_RT_UNLOCK(ms); 304} 305 306void 307ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 308 const uint8_t peer[IEEE80211_ADDR_LEN]) 309{ 310 struct ieee80211_mesh_state *ms = vap->iv_mesh; 311 struct ieee80211_mesh_route *rt, *next; 312 313 MESH_RT_LOCK(ms); 314 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 315 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 316 mesh_rt_del(ms, rt); 317 } 318 MESH_RT_UNLOCK(ms); 319} 320 321/* 322 * Flush expired routing entries, i.e. those in invalid state for 323 * some time. 324 */ 325static void 326mesh_rt_flush_invalid(struct ieee80211vap *vap) 327{ 328 struct ieee80211_mesh_state *ms = vap->iv_mesh; 329 struct ieee80211_mesh_route *rt, *next; 330 331 if (ms == NULL) 332 return; 333 MESH_RT_LOCK(ms); 334 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 335 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 336 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 337 mesh_rt_del(ms, rt); 338 } 339 MESH_RT_UNLOCK(ms); 340} 341 342#define N(a) (sizeof(a) / sizeof(a[0])) 343int 344ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 345{ 346 int i, firstempty = -1; 347 static const uint8_t emptyie[4] = { 0, 0, 0, 0 }; 348 349 for (i = 0; i < N(mesh_proto_paths); i++) { 350 if (memcmp(mpp->mpp_ie, mesh_proto_paths[i].mpp_ie, 4) == 0) 351 return EEXIST; 352 if (memcmp(mesh_proto_paths[i].mpp_ie, emptyie, 4) == 0 && 353 firstempty == -1) 354 firstempty = i; 355 } 356 if (firstempty < 0) 357 return ENOSPC; 358 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 359 return 0; 360} 361 362int 363ieee80211_mesh_register_proto_metric(const struct 364 ieee80211_mesh_proto_metric *mpm) 365{ 366 int i, firstempty = -1; 367 static const uint8_t emptyie[4] = { 0, 0, 0, 0 }; 368 369 for (i = 0; i < N(mesh_proto_metrics); i++) { 370 if (memcmp(mpm->mpm_ie, mesh_proto_metrics[i].mpm_ie, 4) == 0) 371 return EEXIST; 372 if (memcmp(mesh_proto_metrics[i].mpm_ie, emptyie, 4) == 0 && 373 firstempty == -1) 374 firstempty = i; 375 } 376 if (firstempty < 0) 377 return ENOSPC; 378 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 379 return 0; 380} 381 382static int 383mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 384{ 385 struct ieee80211_mesh_state *ms = vap->iv_mesh; 386 int i; 387 388 for (i = 0; i < N(mesh_proto_paths); i++) { 389 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 390 ms->ms_ppath = &mesh_proto_paths[i]; 391 if (vap->iv_state == IEEE80211_S_RUN) 392 vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 393 return 0; 394 } 395 } 396 return ENOENT; 397} 398 399static int 400mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 401{ 402 struct ieee80211_mesh_state *ms = vap->iv_mesh; 403 int i; 404 405 for (i = 0; i < N(mesh_proto_metrics); i++) { 406 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 407 ms->ms_pmetric = &mesh_proto_metrics[i]; 408 if (vap->iv_state == IEEE80211_S_RUN) 409 vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 410 return 0; 411 } 412 } 413 return ENOENT; 414} 415#undef N 416 417static void 418ieee80211_mesh_init(void) 419{ 420 421 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 422 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 423 424 /* 425 * Setup mesh parameters that depends on the clock frequency. 426 */ 427 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 428 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 429 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 430 431 /* 432 * Register action frame handlers. 433 */ 434 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 435 IEEE80211_ACTION_MESHPEERING_OPEN, 436 mesh_recv_action_meshpeering_open); 437 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 438 IEEE80211_ACTION_MESHPEERING_CONFIRM, 439 mesh_recv_action_meshpeering_confirm); 440 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 441 IEEE80211_ACTION_MESHPEERING_CLOSE, 442 mesh_recv_action_meshpeering_close); 443 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 444 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 445 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 446 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 447 448 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 449 IEEE80211_ACTION_MESHPEERING_OPEN, 450 mesh_send_action_meshpeering_open); 451 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 452 IEEE80211_ACTION_MESHPEERING_CONFIRM, 453 mesh_send_action_meshpeering_confirm); 454 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 455 IEEE80211_ACTION_MESHPEERING_CLOSE, 456 mesh_send_action_meshpeering_close); 457 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 458 IEEE80211_ACTION_MESHLMETRIC_REQ, 459 mesh_send_action_meshlink_request); 460 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 461 IEEE80211_ACTION_MESHLMETRIC_REP, 462 mesh_send_action_meshlink_reply); 463 464 /* 465 * Register Airtime Link Metric. 466 */ 467 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 468 469} 470SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 471 472void 473ieee80211_mesh_attach(struct ieee80211com *ic) 474{ 475 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 476} 477 478void 479ieee80211_mesh_detach(struct ieee80211com *ic) 480{ 481} 482 483static void 484mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 485{ 486 struct ieee80211com *ic = ni->ni_ic; 487 uint16_t args[3]; 488 489 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 490 args[0] = ni->ni_mlpid; 491 args[1] = ni->ni_mllid; 492 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 493 ieee80211_send_action(ni, 494 IEEE80211_ACTION_CAT_MESHPEERING, 495 IEEE80211_ACTION_MESHPEERING_CLOSE, 496 args); 497 } 498 callout_drain(&ni->ni_mltimer); 499 /* XXX belongs in hwmp */ 500 ieee80211_ageq_drain_node(&ic->ic_stageq, 501 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 502} 503 504static void 505mesh_vdetach(struct ieee80211vap *vap) 506{ 507 struct ieee80211_mesh_state *ms = vap->iv_mesh; 508 509 callout_drain(&ms->ms_cleantimer); 510 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 511 NULL); 512 ieee80211_mesh_rt_flush(vap); 513 mtx_destroy(&ms->ms_rt_lock); 514 ms->ms_ppath->mpp_vdetach(vap); 515 free(vap->iv_mesh, M_80211_VAP); 516 vap->iv_mesh = NULL; 517} 518 519static void 520mesh_vattach(struct ieee80211vap *vap) 521{ 522 struct ieee80211_mesh_state *ms; 523 vap->iv_newstate = mesh_newstate; 524 vap->iv_input = mesh_input; 525 vap->iv_opdetach = mesh_vdetach; 526 vap->iv_recv_mgmt = mesh_recv_mgmt; 527 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 528 M_NOWAIT | M_ZERO); 529 if (ms == NULL) { 530 printf("%s: couldn't alloc MBSS state\n", __func__); 531 return; 532 } 533 vap->iv_mesh = ms; 534 ms->ms_seq = 0; 535 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 536 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 537 TAILQ_INIT(&ms->ms_routes); 538 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 539 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 540 mesh_select_proto_metric(vap, "AIRTIME"); 541 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 542 mesh_select_proto_path(vap, "HWMP"); 543 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 544 ms->ms_ppath->mpp_vattach(vap); 545} 546 547/* 548 * IEEE80211_M_MBSS vap state machine handler. 549 */ 550static int 551mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 552{ 553 struct ieee80211_mesh_state *ms = vap->iv_mesh; 554 struct ieee80211com *ic = vap->iv_ic; 555 struct ieee80211_node *ni; 556 enum ieee80211_state ostate; 557 558 IEEE80211_LOCK_ASSERT(ic); 559 560 ostate = vap->iv_state; 561 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 562 __func__, ieee80211_state_name[ostate], 563 ieee80211_state_name[nstate], arg); 564 vap->iv_state = nstate; /* state transition */ 565 if (ostate != IEEE80211_S_SCAN) 566 ieee80211_cancel_scan(vap); /* background scan */ 567 ni = vap->iv_bss; /* NB: no reference held */ 568 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 569 callout_drain(&ms->ms_cleantimer); 570 switch (nstate) { 571 case IEEE80211_S_INIT: 572 switch (ostate) { 573 case IEEE80211_S_SCAN: 574 ieee80211_cancel_scan(vap); 575 break; 576 case IEEE80211_S_CAC: 577 ieee80211_dfs_cac_stop(vap); 578 break; 579 case IEEE80211_S_RUN: 580 ieee80211_iterate_nodes(&ic->ic_sta, 581 mesh_vdetach_peers, NULL); 582 break; 583 default: 584 break; 585 } 586 if (ostate != IEEE80211_S_INIT) { 587 /* NB: optimize INIT -> INIT case */ 588 ieee80211_reset_bss(vap); 589 ieee80211_mesh_rt_flush(vap); 590 } 591 break; 592 case IEEE80211_S_SCAN: 593 switch (ostate) { 594 case IEEE80211_S_INIT: 595 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 596 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 597 ms->ms_idlen != 0) { 598 /* 599 * Already have a channel and a mesh ID; bypass 600 * the scan and startup immediately. 601 */ 602 ieee80211_create_ibss(vap, vap->iv_des_chan); 603 break; 604 } 605 /* 606 * Initiate a scan. We can come here as a result 607 * of an IEEE80211_IOC_SCAN_REQ too in which case 608 * the vap will be marked with IEEE80211_FEXT_SCANREQ 609 * and the scan request parameters will be present 610 * in iv_scanreq. Otherwise we do the default. 611 */ 612 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 613 ieee80211_check_scan(vap, 614 vap->iv_scanreq_flags, 615 vap->iv_scanreq_duration, 616 vap->iv_scanreq_mindwell, 617 vap->iv_scanreq_maxdwell, 618 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 619 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 620 } else 621 ieee80211_check_scan_current(vap); 622 break; 623 default: 624 break; 625 } 626 break; 627 case IEEE80211_S_CAC: 628 /* 629 * Start CAC on a DFS channel. We come here when starting 630 * a bss on a DFS channel (see ieee80211_create_ibss). 631 */ 632 ieee80211_dfs_cac_start(vap); 633 break; 634 case IEEE80211_S_RUN: 635 switch (ostate) { 636 case IEEE80211_S_INIT: 637 /* 638 * Already have a channel; bypass the 639 * scan and startup immediately. 640 * Note that ieee80211_create_ibss will call 641 * back to do a RUN->RUN state change. 642 */ 643 ieee80211_create_ibss(vap, 644 ieee80211_ht_adjust_channel(ic, 645 ic->ic_curchan, vap->iv_flags_ht)); 646 /* NB: iv_bss is changed on return */ 647 break; 648 case IEEE80211_S_CAC: 649 /* 650 * NB: This is the normal state change when CAC 651 * expires and no radar was detected; no need to 652 * clear the CAC timer as it's already expired. 653 */ 654 /* fall thru... */ 655 case IEEE80211_S_CSA: 656#if 0 657 /* 658 * Shorten inactivity timer of associated stations 659 * to weed out sta's that don't follow a CSA. 660 */ 661 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 662#endif 663 /* 664 * Update bss node channel to reflect where 665 * we landed after CSA. 666 */ 667 ieee80211_node_set_chan(vap->iv_bss, 668 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 669 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 670 /* XXX bypass debug msgs */ 671 break; 672 case IEEE80211_S_SCAN: 673 case IEEE80211_S_RUN: 674#ifdef IEEE80211_DEBUG 675 if (ieee80211_msg_debug(vap)) { 676 struct ieee80211_node *ni = vap->iv_bss; 677 ieee80211_note(vap, 678 "synchronized with %s meshid ", 679 ether_sprintf(ni->ni_meshid)); 680 ieee80211_print_essid(ni->ni_meshid, 681 ni->ni_meshidlen); 682 /* XXX MCS/HT */ 683 printf(" channel %d\n", 684 ieee80211_chan2ieee(ic, ic->ic_curchan)); 685 } 686#endif 687 break; 688 default: 689 break; 690 } 691 ieee80211_node_authorize(vap->iv_bss); 692 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 693 mesh_rt_cleanup_cb, vap); 694 break; 695 default: 696 break; 697 } 698 /* NB: ostate not nstate */ 699 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 700 return 0; 701} 702 703static void 704mesh_rt_cleanup_cb(void *arg) 705{ 706 struct ieee80211vap *vap = arg; 707 struct ieee80211_mesh_state *ms = vap->iv_mesh; 708 709 mesh_rt_flush_invalid(vap); 710 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 711 mesh_rt_cleanup_cb, vap); 712} 713 714 715/* 716 * Helper function to note the Mesh Peer Link FSM change. 717 */ 718static void 719mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 720{ 721 struct ieee80211vap *vap = ni->ni_vap; 722 struct ieee80211_mesh_state *ms = vap->iv_mesh; 723#ifdef IEEE80211_DEBUG 724 static const char *meshlinkstates[] = { 725 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 726 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 727 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 728 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 729 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 730 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 731 }; 732#endif 733 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 734 ni, "peer link: %s -> %s", 735 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 736 737 /* track neighbor count */ 738 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 739 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 740 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 741 ms->ms_neighbors++; 742 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 743 state != IEEE80211_NODE_MESH_ESTABLISHED) { 744 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 745 ms->ms_neighbors--; 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 SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1044#define HAS_SEQ(type) ((type & 0x4) == 0) 1045 struct ieee80211vap *vap = ni->ni_vap; 1046 struct ieee80211com *ic = ni->ni_ic; 1047 struct ifnet *ifp = vap->iv_ifp; 1048 struct ieee80211_frame *wh; 1049 const struct ieee80211_meshcntl *mc; 1050 int hdrspace, meshdrlen, need_tap; 1051 uint8_t dir, type, subtype, qos; 1052 uint32_t seq; 1053 uint8_t *addr; 1054 ieee80211_seq rxseq; 1055 1056 KASSERT(ni != NULL, ("null node")); 1057 ni->ni_inact = ni->ni_inact_reload; 1058 1059 need_tap = 1; /* mbuf need to be tapped. */ 1060 type = -1; /* undefined */ 1061 1062 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1063 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1064 ni->ni_macaddr, NULL, 1065 "too short (1): len %u", m->m_pkthdr.len); 1066 vap->iv_stats.is_rx_tooshort++; 1067 goto out; 1068 } 1069 /* 1070 * Bit of a cheat here, we use a pointer for a 3-address 1071 * frame format but don't reference fields past outside 1072 * ieee80211_frame_min w/o first validating the data is 1073 * present. 1074 */ 1075 wh = mtod(m, struct ieee80211_frame *); 1076 1077 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1078 IEEE80211_FC0_VERSION_0) { 1079 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1080 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1081 vap->iv_stats.is_rx_badversion++; 1082 goto err; 1083 } 1084 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1085 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1086 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1087 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1088 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1089 ni->ni_noise = nf; 1090 if (HAS_SEQ(type)) { 1091 uint8_t tid = ieee80211_gettid(wh); 1092 1093 if (IEEE80211_QOS_HAS_SEQ(wh) && 1094 TID_TO_WME_AC(tid) >= WME_AC_VI) 1095 ic->ic_wme.wme_hipri_traffic++; 1096 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1097 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1098 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1099 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1100 /* duplicate, discard */ 1101 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1102 wh->i_addr1, "duplicate", 1103 "seqno <%u,%u> fragno <%u,%u> tid %u", 1104 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1105 ni->ni_rxseqs[tid] >> 1106 IEEE80211_SEQ_SEQ_SHIFT, 1107 rxseq & IEEE80211_SEQ_FRAG_MASK, 1108 ni->ni_rxseqs[tid] & 1109 IEEE80211_SEQ_FRAG_MASK, 1110 tid); 1111 vap->iv_stats.is_rx_dup++; 1112 IEEE80211_NODE_STAT(ni, rx_dup); 1113 goto out; 1114 } 1115 ni->ni_rxseqs[tid] = rxseq; 1116 } 1117 } 1118#ifdef IEEE80211_DEBUG 1119 /* 1120 * It's easier, but too expensive, to simulate different mesh 1121 * topologies by consulting the ACL policy very early, so do this 1122 * only under DEBUG. 1123 * 1124 * NB: this check is also done upon peering link initiation. 1125 */ 1126 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1127 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1128 wh, NULL, "%s", "disallowed by ACL"); 1129 vap->iv_stats.is_rx_acl++; 1130 goto out; 1131 } 1132#endif 1133 switch (type) { 1134 case IEEE80211_FC0_TYPE_DATA: 1135 if (ni == vap->iv_bss) 1136 goto out; 1137 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1138 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1139 ni->ni_macaddr, NULL, 1140 "peer link not yet established (%d)", 1141 ni->ni_mlstate); 1142 vap->iv_stats.is_mesh_nolink++; 1143 goto out; 1144 } 1145 if (dir != IEEE80211_FC1_DIR_FROMDS && 1146 dir != IEEE80211_FC1_DIR_DSTODS) { 1147 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1148 wh, "data", "incorrect dir 0x%x", dir); 1149 vap->iv_stats.is_rx_wrongdir++; 1150 goto err; 1151 } 1152 /* pull up enough to get to the mesh control */ 1153 hdrspace = ieee80211_hdrspace(ic, wh); 1154 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1155 (m = m_pullup(m, hdrspace + 1156 sizeof(struct ieee80211_meshcntl))) == NULL) { 1157 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1158 ni->ni_macaddr, NULL, 1159 "data too short: expecting %u", hdrspace); 1160 vap->iv_stats.is_rx_tooshort++; 1161 goto out; /* XXX */ 1162 } 1163 /* 1164 * Now calculate the full extent of the headers. Note 1165 * mesh_decap will pull up anything we didn't get 1166 * above when it strips the 802.11 headers. 1167 */ 1168 mc = (const struct ieee80211_meshcntl *) 1169 (mtod(m, const uint8_t *) + hdrspace); 1170 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1171 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1172 hdrspace += meshdrlen; 1173 seq = LE_READ_4(mc->mc_seq); 1174 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1175 addr = wh->i_addr3; 1176 else 1177 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1178 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1179 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1180 addr, "data", "%s", "not to me"); 1181 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1182 goto out; 1183 } 1184 if (mesh_checkpseq(vap, addr, seq) != 0) { 1185 vap->iv_stats.is_rx_dup++; 1186 goto out; 1187 } 1188 1189 /* 1190 * Potentially forward packet. See table s36 (p140) 1191 * for the rules. XXX tap fwd'd packets not for us? 1192 */ 1193 if (dir == IEEE80211_FC1_DIR_FROMDS || 1194 !mesh_isucastforme(vap, wh, mc)) { 1195 mesh_forward(vap, m, mc); 1196 if (dir == IEEE80211_FC1_DIR_DSTODS) 1197 goto out; 1198 /* NB: fall thru to deliver mcast frames locally */ 1199 } 1200 1201 /* 1202 * Save QoS bits for use below--before we strip the header. 1203 */ 1204 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1205 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1206 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1207 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1208 } else 1209 qos = 0; 1210 /* 1211 * Next up, any fragmentation. 1212 */ 1213 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1214 m = ieee80211_defrag(ni, m, hdrspace); 1215 if (m == NULL) { 1216 /* Fragment dropped or frame not complete yet */ 1217 goto out; 1218 } 1219 } 1220 wh = NULL; /* no longer valid, catch any uses */ 1221 1222 if (ieee80211_radiotap_active_vap(vap)) 1223 ieee80211_radiotap_rx(vap, m); 1224 need_tap = 0; 1225 1226 /* 1227 * Finally, strip the 802.11 header. 1228 */ 1229 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1230 if (m == NULL) { 1231 /* XXX mask bit to check for both */ 1232 /* don't count Null data frames as errors */ 1233 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1234 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1235 goto out; 1236 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1237 ni->ni_macaddr, "data", "%s", "decap error"); 1238 vap->iv_stats.is_rx_decap++; 1239 IEEE80211_NODE_STAT(ni, rx_decap); 1240 goto err; 1241 } 1242 if (qos & IEEE80211_QOS_AMSDU) { 1243 m = ieee80211_decap_amsdu(ni, m); 1244 if (m == NULL) 1245 return IEEE80211_FC0_TYPE_DATA; 1246 } 1247 ieee80211_deliver_data(vap, ni, m); 1248 return type; 1249 case IEEE80211_FC0_TYPE_MGT: 1250 vap->iv_stats.is_rx_mgmt++; 1251 IEEE80211_NODE_STAT(ni, rx_mgmt); 1252 if (dir != IEEE80211_FC1_DIR_NODS) { 1253 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1254 wh, "mgt", "incorrect dir 0x%x", dir); 1255 vap->iv_stats.is_rx_wrongdir++; 1256 goto err; 1257 } 1258 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1259 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1260 ni->ni_macaddr, "mgt", "too short: len %u", 1261 m->m_pkthdr.len); 1262 vap->iv_stats.is_rx_tooshort++; 1263 goto out; 1264 } 1265#ifdef IEEE80211_DEBUG 1266 if ((ieee80211_msg_debug(vap) && 1267 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1268 ieee80211_msg_dumppkts(vap)) { 1269 if_printf(ifp, "received %s from %s rssi %d\n", 1270 ieee80211_mgt_subtype_name[subtype >> 1271 IEEE80211_FC0_SUBTYPE_SHIFT], 1272 ether_sprintf(wh->i_addr2), rssi); 1273 } 1274#endif 1275 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1276 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1277 wh, NULL, "%s", "WEP set but not permitted"); 1278 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1279 goto out; 1280 } 1281 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1282 goto out; 1283 case IEEE80211_FC0_TYPE_CTL: 1284 vap->iv_stats.is_rx_ctl++; 1285 IEEE80211_NODE_STAT(ni, rx_ctrl); 1286 goto out; 1287 default: 1288 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1289 wh, "bad", "frame type 0x%x", type); 1290 /* should not come here */ 1291 break; 1292 } 1293err: 1294 ifp->if_ierrors++; 1295out: 1296 if (m != NULL) { 1297 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1298 ieee80211_radiotap_rx(vap, m); 1299 m_freem(m); 1300 } 1301 return type; 1302} 1303 1304static void 1305mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1306 int rssi, int nf) 1307{ 1308 struct ieee80211vap *vap = ni->ni_vap; 1309 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1310 struct ieee80211com *ic = ni->ni_ic; 1311 struct ieee80211_frame *wh; 1312 uint8_t *frm, *efrm; 1313 1314 wh = mtod(m0, struct ieee80211_frame *); 1315 frm = (uint8_t *)&wh[1]; 1316 efrm = mtod(m0, uint8_t *) + m0->m_len; 1317 switch (subtype) { 1318 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1319 case IEEE80211_FC0_SUBTYPE_BEACON: 1320 { 1321 struct ieee80211_scanparams scan; 1322 /* 1323 * We process beacon/probe response 1324 * frames to discover neighbors. 1325 */ 1326 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1327 return; 1328 /* 1329 * Count frame now that we know it's to be processed. 1330 */ 1331 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1332 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1333 IEEE80211_NODE_STAT(ni, rx_beacons); 1334 } else 1335 IEEE80211_NODE_STAT(ni, rx_proberesp); 1336 /* 1337 * If scanning, just pass information to the scan module. 1338 */ 1339 if (ic->ic_flags & IEEE80211_F_SCAN) { 1340 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1341 /* 1342 * Actively scanning a channel marked passive; 1343 * send a probe request now that we know there 1344 * is 802.11 traffic present. 1345 * 1346 * XXX check if the beacon we recv'd gives 1347 * us what we need and suppress the probe req 1348 */ 1349 ieee80211_probe_curchan(vap, 1); 1350 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1351 } 1352 ieee80211_add_scan(vap, &scan, wh, 1353 subtype, rssi, nf); 1354 return; 1355 } 1356 1357 /* The rest of this code assumes we are running */ 1358 if (vap->iv_state != IEEE80211_S_RUN) 1359 return; 1360 /* 1361 * Ignore non-mesh STAs. 1362 */ 1363 if ((scan.capinfo & 1364 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1365 scan.meshid == NULL || scan.meshconf == NULL) { 1366 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1367 wh, "beacon", "%s", "not a mesh sta"); 1368 vap->iv_stats.is_mesh_wrongmesh++; 1369 return; 1370 } 1371 /* 1372 * Ignore STAs for other mesh networks. 1373 */ 1374 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1375 mesh_verify_meshconf(vap, scan.meshconf)) { 1376 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1377 wh, "beacon", "%s", "not for our mesh"); 1378 vap->iv_stats.is_mesh_wrongmesh++; 1379 return; 1380 } 1381 /* 1382 * Peer only based on the current ACL policy. 1383 */ 1384 if (vap->iv_acl != NULL && 1385 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1386 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1387 wh, NULL, "%s", "disallowed by ACL"); 1388 vap->iv_stats.is_rx_acl++; 1389 return; 1390 } 1391 /* 1392 * Do neighbor discovery. 1393 */ 1394 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1395 /* 1396 * Create a new entry in the neighbor table. 1397 */ 1398 ni = ieee80211_add_neighbor(vap, wh, &scan); 1399 } 1400 /* 1401 * Automatically peer with discovered nodes if possible. 1402 * XXX backoff on repeated failure 1403 */ 1404 if (ni != vap->iv_bss && 1405 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1406 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1407 uint16_t args[1]; 1408 1409 ni->ni_mlpid = mesh_generateid(vap); 1410 if (ni->ni_mlpid == 0) 1411 return; 1412 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1413 args[0] = ni->ni_mlpid; 1414 ieee80211_send_action(ni, 1415 IEEE80211_ACTION_CAT_MESHPEERING, 1416 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1417 ni->ni_mlrcnt = 0; 1418 mesh_peer_timeout_setup(ni); 1419 } 1420 break; 1421 } 1422 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1423 { 1424 uint8_t *ssid, *meshid, *rates, *xrates; 1425 uint8_t *sfrm; 1426 1427 if (vap->iv_state != IEEE80211_S_RUN) { 1428 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1429 wh, NULL, "wrong state %s", 1430 ieee80211_state_name[vap->iv_state]); 1431 vap->iv_stats.is_rx_mgtdiscard++; 1432 return; 1433 } 1434 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1435 /* frame must be directed */ 1436 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1437 wh, NULL, "%s", "not unicast"); 1438 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1439 return; 1440 } 1441 /* 1442 * prreq frame format 1443 * [tlv] ssid 1444 * [tlv] supported rates 1445 * [tlv] extended supported rates 1446 * [tlv] mesh id 1447 */ 1448 ssid = meshid = rates = xrates = NULL; 1449 sfrm = frm; 1450 while (efrm - frm > 1) { 1451 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1452 switch (*frm) { 1453 case IEEE80211_ELEMID_SSID: 1454 ssid = frm; 1455 break; 1456 case IEEE80211_ELEMID_RATES: 1457 rates = frm; 1458 break; 1459 case IEEE80211_ELEMID_XRATES: 1460 xrates = frm; 1461 break; 1462 case IEEE80211_ELEMID_MESHID: 1463 meshid = frm; 1464 break; 1465 } 1466 frm += frm[2] + 2; 1467 } 1468 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1469 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1470 if (xrates != NULL) 1471 IEEE80211_VERIFY_ELEMENT(xrates, 1472 IEEE80211_RATE_MAXSIZE - rates[1], return); 1473 if (meshid != NULL) 1474 IEEE80211_VERIFY_ELEMENT(meshid, 1475 IEEE80211_MESHID_LEN, return); 1476 /* NB: meshid, not ssid */ 1477 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1478 1479 /* XXX find a better class or define it's own */ 1480 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1481 "%s", "recv probe req"); 1482 /* 1483 * Some legacy 11b clients cannot hack a complete 1484 * probe response frame. When the request includes 1485 * only a bare-bones rate set, communicate this to 1486 * the transmit side. 1487 */ 1488 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1489 break; 1490 } 1491 case IEEE80211_FC0_SUBTYPE_ACTION: 1492 if (vap->iv_state != IEEE80211_S_RUN) { 1493 vap->iv_stats.is_rx_mgtdiscard++; 1494 break; 1495 } 1496 /* 1497 * We received an action for an unknown neighbor. 1498 * XXX: wait for it to beacon or create ieee80211_node? 1499 */ 1500 if (ni == vap->iv_bss) { 1501 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1502 wh, NULL, "%s", "unknown node"); 1503 vap->iv_stats.is_rx_mgtdiscard++; 1504 break; 1505 } 1506 /* 1507 * Discard if not for us. 1508 */ 1509 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1510 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1511 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1512 wh, NULL, "%s", "not for me"); 1513 vap->iv_stats.is_rx_mgtdiscard++; 1514 break; 1515 } 1516 /* XXX parse_action is a bit useless now */ 1517 if (ieee80211_parse_action(ni, m0) == 0) 1518 ic->ic_recv_action(ni, wh, frm, efrm); 1519 break; 1520 case IEEE80211_FC0_SUBTYPE_AUTH: 1521 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1522 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1523 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1524 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1525 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1526 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1527 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1528 wh, NULL, "%s", "not handled"); 1529 vap->iv_stats.is_rx_mgtdiscard++; 1530 return; 1531 default: 1532 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1533 wh, "mgt", "subtype 0x%x not handled", subtype); 1534 vap->iv_stats.is_rx_badsubtype++; 1535 break; 1536 } 1537} 1538 1539/* 1540 * Parse meshpeering action ie's for open+confirm frames; the 1541 * important bits are returned in the supplied structure. 1542 */ 1543static const struct ieee80211_meshpeer_ie * 1544mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1545 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1546 const uint8_t *frm, const uint8_t *efrm, 1547 struct ieee80211_meshpeer_ie *mp) 1548{ 1549 struct ieee80211vap *vap = ni->ni_vap; 1550 const struct ieee80211_meshpeer_ie *mpie; 1551 const uint8_t *meshid, *meshconf, *meshpeerver, *meshpeer; 1552 1553 meshid = meshconf = meshpeerver = meshpeer = NULL; 1554 while (efrm - frm > 1) { 1555 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1556 switch (*frm) { 1557 case IEEE80211_ELEMID_MESHPEERVER: 1558 meshpeerver = frm; 1559 break; 1560 case IEEE80211_ELEMID_MESHID: 1561 meshid = frm; 1562 break; 1563 case IEEE80211_ELEMID_MESHCONF: 1564 meshconf = frm; 1565 break; 1566 case IEEE80211_ELEMID_MESHPEER: 1567 meshpeer = frm; 1568 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1569 memset(mp, 0, sizeof(*mp)); 1570 mp->peer_subtype = mpie->peer_subtype; 1571 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1572 /* NB: peer link ID is optional on these frames */ 1573 if (mpie->peer_subtype == 1574 IEEE80211_MESH_PEER_LINK_CLOSE && 1575 mpie->peer_len == 5) { 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 && mp->peer_subtype != 1593 IEEE80211_ACTION_MESHPEERING_CLOSE, ("parsing close action")); 1594 1595 if (mesh_verify_meshpeerver(vap, meshpeerver) || 1596 mesh_verify_meshid(vap, meshid) || 1597 mesh_verify_meshpeer(vap, 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 if (meshpeer == NULL) { 1643 return 0; 1644 } 1645 1646 /* XXX move up */ 1647 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1648 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1649 1650 switch (ni->ni_mlstate) { 1651 case IEEE80211_NODE_MESH_IDLE: 1652 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1653 ni->ni_mllid = meshpeer->peer_llinkid; 1654 ni->ni_mlpid = mesh_generateid(vap); 1655 if (ni->ni_mlpid == 0) 1656 return 0; /* XXX */ 1657 args[0] = ni->ni_mlpid; 1658 /* Announce we're open too... */ 1659 ieee80211_send_action(ni, 1660 IEEE80211_ACTION_CAT_MESHPEERING, 1661 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1662 /* ...and confirm the link. */ 1663 args[0] = ni->ni_mlpid; 1664 args[1] = ni->ni_mllid; 1665 ieee80211_send_action(ni, 1666 IEEE80211_ACTION_CAT_MESHPEERING, 1667 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1668 args); 1669 mesh_peer_timeout_setup(ni); 1670 break; 1671 case IEEE80211_NODE_MESH_OPENRCV: 1672 /* Wrong Link ID */ 1673 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1674 args[0] = ni->ni_mllid; 1675 args[1] = ni->ni_mlpid; 1676 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1677 ieee80211_send_action(ni, 1678 IEEE80211_ACTION_CAT_MESHPEERING, 1679 IEEE80211_ACTION_MESHPEERING_CLOSE, 1680 args); 1681 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1682 mesh_peer_timeout_setup(ni); 1683 break; 1684 } 1685 /* Duplicate open, confirm again. */ 1686 args[0] = ni->ni_mlpid; 1687 args[1] = ni->ni_mllid; 1688 ieee80211_send_action(ni, 1689 IEEE80211_ACTION_CAT_MESHPEERING, 1690 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1691 args); 1692 break; 1693 case IEEE80211_NODE_MESH_OPENSNT: 1694 ni->ni_mllid = meshpeer->peer_llinkid; 1695 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1696 args[0] = ni->ni_mlpid; 1697 args[1] = ni->ni_mllid; 1698 ieee80211_send_action(ni, 1699 IEEE80211_ACTION_CAT_MESHPEERING, 1700 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1701 args); 1702 /* NB: don't setup/clear any timeout */ 1703 break; 1704 case IEEE80211_NODE_MESH_CONFIRMRCV: 1705 if (ni->ni_mlpid != meshpeer->peer_linkid || 1706 ni->ni_mllid != meshpeer->peer_llinkid) { 1707 args[0] = ni->ni_mlpid; 1708 args[1] = ni->ni_mllid; 1709 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1710 ieee80211_send_action(ni, 1711 IEEE80211_ACTION_CAT_MESHPEERING, 1712 IEEE80211_ACTION_MESHPEERING_CLOSE, 1713 args); 1714 mesh_linkchange(ni, 1715 IEEE80211_NODE_MESH_HOLDING); 1716 mesh_peer_timeout_setup(ni); 1717 break; 1718 } 1719 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1720 ni->ni_mllid = meshpeer->peer_llinkid; 1721 args[0] = ni->ni_mlpid; 1722 args[1] = ni->ni_mllid; 1723 ieee80211_send_action(ni, 1724 IEEE80211_ACTION_CAT_MESHPEERING, 1725 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1726 args); 1727 mesh_peer_timeout_stop(ni); 1728 break; 1729 case IEEE80211_NODE_MESH_ESTABLISHED: 1730 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1731 args[0] = ni->ni_mllid; 1732 args[1] = ni->ni_mlpid; 1733 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1734 ieee80211_send_action(ni, 1735 IEEE80211_ACTION_CAT_MESHPEERING, 1736 IEEE80211_ACTION_MESHPEERING_CLOSE, 1737 args); 1738 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1739 mesh_peer_timeout_setup(ni); 1740 break; 1741 } 1742 args[0] = ni->ni_mlpid; 1743 args[1] = ni->ni_mllid; 1744 ieee80211_send_action(ni, 1745 IEEE80211_ACTION_CAT_MESHPEERING, 1746 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1747 args); 1748 break; 1749 case IEEE80211_NODE_MESH_HOLDING: 1750 args[0] = ni->ni_mlpid; 1751 args[1] = meshpeer->peer_llinkid; 1752 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1753 ieee80211_send_action(ni, 1754 IEEE80211_ACTION_CAT_MESHPEERING, 1755 IEEE80211_ACTION_MESHPEERING_CLOSE, 1756 args); 1757 break; 1758 } 1759 return 0; 1760} 1761 1762static int 1763mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1764 const struct ieee80211_frame *wh, 1765 const uint8_t *frm, const uint8_t *efrm) 1766{ 1767 struct ieee80211vap *vap = ni->ni_vap; 1768 struct ieee80211_meshpeer_ie ie; 1769 const struct ieee80211_meshpeer_ie *meshpeer; 1770 uint16_t args[3]; 1771 1772 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1773 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie); 1774 if (meshpeer == NULL) { 1775 return 0; 1776 } 1777 1778 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1779 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1780 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1781 1782 switch (ni->ni_mlstate) { 1783 case IEEE80211_NODE_MESH_OPENRCV: 1784 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1785 mesh_peer_timeout_stop(ni); 1786 break; 1787 case IEEE80211_NODE_MESH_OPENSNT: 1788 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1789 break; 1790 case IEEE80211_NODE_MESH_HOLDING: 1791 args[0] = ni->ni_mlpid; 1792 args[1] = meshpeer->peer_llinkid; 1793 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1794 ieee80211_send_action(ni, 1795 IEEE80211_ACTION_CAT_MESHPEERING, 1796 IEEE80211_ACTION_MESHPEERING_CLOSE, 1797 args); 1798 break; 1799 case IEEE80211_NODE_MESH_CONFIRMRCV: 1800 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1801 args[0] = ni->ni_mlpid; 1802 args[1] = ni->ni_mllid; 1803 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1804 ieee80211_send_action(ni, 1805 IEEE80211_ACTION_CAT_MESHPEERING, 1806 IEEE80211_ACTION_MESHPEERING_CLOSE, 1807 args); 1808 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1809 mesh_peer_timeout_setup(ni); 1810 } 1811 break; 1812 default: 1813 IEEE80211_DISCARD(vap, 1814 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1815 wh, NULL, "received confirm in invalid state %d", 1816 ni->ni_mlstate); 1817 vap->iv_stats.is_rx_mgtdiscard++; 1818 break; 1819 } 1820 return 0; 1821} 1822 1823static int 1824mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1825 const struct ieee80211_frame *wh, 1826 const uint8_t *frm, const uint8_t *efrm) 1827{ 1828 uint16_t args[3]; 1829 1830 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1831 ni, "%s", "recv PEER CLOSE"); 1832 1833 switch (ni->ni_mlstate) { 1834 case IEEE80211_NODE_MESH_IDLE: 1835 /* ignore */ 1836 break; 1837 case IEEE80211_NODE_MESH_OPENRCV: 1838 case IEEE80211_NODE_MESH_OPENSNT: 1839 case IEEE80211_NODE_MESH_CONFIRMRCV: 1840 case IEEE80211_NODE_MESH_ESTABLISHED: 1841 args[0] = ni->ni_mlpid; 1842 args[1] = ni->ni_mllid; 1843 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1844 ieee80211_send_action(ni, 1845 IEEE80211_ACTION_CAT_MESHPEERING, 1846 IEEE80211_ACTION_MESHPEERING_CLOSE, 1847 args); 1848 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1849 mesh_peer_timeout_setup(ni); 1850 break; 1851 case IEEE80211_NODE_MESH_HOLDING: 1852 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1853 mesh_peer_timeout_setup(ni); 1854 break; 1855 } 1856 return 0; 1857} 1858 1859/* 1860 * Link Metric handling. 1861 */ 1862static int 1863mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1864 const struct ieee80211_frame *wh, 1865 const uint8_t *frm, const uint8_t *efrm) 1866{ 1867 uint32_t metric; 1868 1869 metric = mesh_airtime_calc(ni); 1870 ieee80211_send_action(ni, 1871 IEEE80211_ACTION_CAT_MESHLMETRIC, 1872 IEEE80211_ACTION_MESHLMETRIC_REP, 1873 &metric); 1874 return 0; 1875} 1876 1877static int 1878mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1879 const struct ieee80211_frame *wh, 1880 const uint8_t *frm, const uint8_t *efrm) 1881{ 1882 return 0; 1883} 1884 1885static int 1886mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1887{ 1888 struct ieee80211_bpf_params params; 1889 1890 memset(¶ms, 0, sizeof(params)); 1891 params.ibp_pri = WME_AC_VO; 1892 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1893 /* XXX ucast/mcast */ 1894 params.ibp_try0 = ni->ni_txparms->maxretry; 1895 params.ibp_power = ni->ni_txpower; 1896 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1897 ¶ms); 1898} 1899 1900#define ADDSHORT(frm, v) do { \ 1901 frm[0] = (v) & 0xff; \ 1902 frm[1] = (v) >> 8; \ 1903 frm += 2; \ 1904} while (0) 1905#define ADDWORD(frm, v) do { \ 1906 frm[0] = (v) & 0xff; \ 1907 frm[1] = ((v) >> 8) & 0xff; \ 1908 frm[2] = ((v) >> 16) & 0xff; \ 1909 frm[3] = ((v) >> 24) & 0xff; \ 1910 frm += 4; \ 1911} while (0) 1912 1913static int 1914mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1915 int category, int action, void *args0) 1916{ 1917 struct ieee80211vap *vap = ni->ni_vap; 1918 struct ieee80211com *ic = ni->ni_ic; 1919 uint16_t *args = args0; 1920 const struct ieee80211_rateset *rs; 1921 struct mbuf *m; 1922 uint8_t *frm; 1923 1924 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1925 "send PEER OPEN action: localid 0x%x", args[0]); 1926 1927 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1928 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1929 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1930 ieee80211_ref_node(ni); 1931 1932 m = ieee80211_getmgtframe(&frm, 1933 ic->ic_headroom + sizeof(struct ieee80211_frame), 1934 sizeof(uint16_t) /* action+category */ 1935 + sizeof(uint16_t) /* capabilites */ 1936 + sizeof(struct ieee80211_meshpeerver_ie) 1937 + 2 + IEEE80211_RATE_SIZE 1938 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1939 + 2 + IEEE80211_MESHID_LEN 1940 + sizeof(struct ieee80211_meshconf_ie) 1941 + sizeof(struct ieee80211_meshpeer_ie) 1942 ); 1943 if (m != NULL) { 1944 /* 1945 * mesh peer open action frame format: 1946 * [1] category 1947 * [1] action 1948 * [2] capabilities 1949 * [tlv] mesh peer protocol version 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 frm = ieee80211_add_meshpeerver(frm, vap); 1960 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1961 frm = ieee80211_add_rates(frm, rs); 1962 frm = ieee80211_add_xrates(frm, rs); 1963 frm = ieee80211_add_meshid(frm, vap); 1964 frm = ieee80211_add_meshconf(frm, vap); 1965 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1966 args[0], 0, 0); 1967 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1968 return mesh_send_action(ni, m); 1969 } else { 1970 vap->iv_stats.is_tx_nobuf++; 1971 ieee80211_free_node(ni); 1972 return ENOMEM; 1973 } 1974} 1975 1976static int 1977mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1978 int category, int action, void *args0) 1979{ 1980 struct ieee80211vap *vap = ni->ni_vap; 1981 struct ieee80211com *ic = ni->ni_ic; 1982 uint16_t *args = args0; 1983 const struct ieee80211_rateset *rs; 1984 struct mbuf *m; 1985 uint8_t *frm; 1986 1987 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1988 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1989 args[0], args[1]); 1990 1991 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1992 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1993 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1994 ieee80211_ref_node(ni); 1995 1996 m = ieee80211_getmgtframe(&frm, 1997 ic->ic_headroom + sizeof(struct ieee80211_frame), 1998 sizeof(uint16_t) /* action+category */ 1999 + sizeof(uint16_t) /* capabilites */ 2000 + sizeof(uint16_t) /* status code */ 2001 + sizeof(uint16_t) /* AID */ 2002 + sizeof(struct ieee80211_meshpeerver_ie) 2003 + 2 + IEEE80211_RATE_SIZE 2004 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 2005 + 2 + IEEE80211_MESHID_LEN 2006 + sizeof(struct ieee80211_meshconf_ie) 2007 + sizeof(struct ieee80211_meshpeer_ie) 2008 ); 2009 if (m != NULL) { 2010 /* 2011 * mesh peer confirm action frame format: 2012 * [1] category 2013 * [1] action 2014 * [2] capabilities 2015 * [2] status code 2016 * [2] association id (peer ID) 2017 * [tlv] mesh peer protocol version 2018 * [tlv] rates 2019 * [tlv] xrates 2020 * [tlv] mesh id 2021 * [tlv] mesh conf 2022 * [tlv] mesh peer link mgmt 2023 */ 2024 *frm++ = category; 2025 *frm++ = action; 2026 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2027 ADDSHORT(frm, 0); /* status code */ 2028 ADDSHORT(frm, args[1]); /* AID */ 2029 frm = ieee80211_add_meshpeerver(frm, vap); 2030 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2031 frm = ieee80211_add_rates(frm, rs); 2032 frm = ieee80211_add_xrates(frm, rs); 2033 frm = ieee80211_add_meshid(frm, vap); 2034 frm = ieee80211_add_meshconf(frm, vap); 2035 frm = ieee80211_add_meshpeer(frm, 2036 IEEE80211_MESH_PEER_LINK_CONFIRM, 2037 args[0], args[1], 0); 2038 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2039 return mesh_send_action(ni, m); 2040 } else { 2041 vap->iv_stats.is_tx_nobuf++; 2042 ieee80211_free_node(ni); 2043 return ENOMEM; 2044 } 2045} 2046 2047static int 2048mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2049 int category, int action, void *args0) 2050{ 2051 struct ieee80211vap *vap = ni->ni_vap; 2052 struct ieee80211com *ic = ni->ni_ic; 2053 uint16_t *args = args0; 2054 struct mbuf *m; 2055 uint8_t *frm; 2056 2057 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2058 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2059 args[0], args[1], args[2]); 2060 2061 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2062 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2063 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2064 ieee80211_ref_node(ni); 2065 2066 m = ieee80211_getmgtframe(&frm, 2067 ic->ic_headroom + sizeof(struct ieee80211_frame), 2068 sizeof(uint16_t) /* action+category */ 2069 + sizeof(uint16_t) /* reason code */ 2070 + sizeof(struct ieee80211_meshpeerver_ie) 2071 + 2 + IEEE80211_MESHID_LEN 2072 + sizeof(struct ieee80211_meshpeer_ie) 2073 ); 2074 if (m != NULL) { 2075 /* 2076 * mesh peer close action frame format: 2077 * [1] category 2078 * [1] action 2079 * [2] reason code 2080 * [tlv] mesh peer protocol version 2081 * [tlv] mesh id 2082 * [tlv] mesh peer link mgmt 2083 */ 2084 *frm++ = category; 2085 *frm++ = action; 2086 ADDSHORT(frm, args[2]); /* reason code */ 2087 frm = ieee80211_add_meshpeerver(frm, vap); 2088 frm = ieee80211_add_meshid(frm, vap); 2089 frm = ieee80211_add_meshpeer(frm, 2090 IEEE80211_MESH_PEER_LINK_CLOSE, 2091 args[0], args[1], args[2]); 2092 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2093 return mesh_send_action(ni, m); 2094 } else { 2095 vap->iv_stats.is_tx_nobuf++; 2096 ieee80211_free_node(ni); 2097 return ENOMEM; 2098 } 2099} 2100 2101static int 2102mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2103 int category, int action, void *arg0) 2104{ 2105 struct ieee80211vap *vap = ni->ni_vap; 2106 struct ieee80211com *ic = ni->ni_ic; 2107 struct mbuf *m; 2108 uint8_t *frm; 2109 2110 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2111 "%s", "send LINK METRIC REQUEST action"); 2112 2113 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2114 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2115 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2116 ieee80211_ref_node(ni); 2117 2118 m = ieee80211_getmgtframe(&frm, 2119 ic->ic_headroom + sizeof(struct ieee80211_frame), 2120 sizeof(uint16_t) /* action+category */ 2121 ); 2122 if (m != NULL) { 2123 /* 2124 * mesh link metric request 2125 * [1] category 2126 * [1] action 2127 */ 2128 *frm++ = category; 2129 *frm++ = action; 2130 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2131 return mesh_send_action(ni, m); 2132 } else { 2133 vap->iv_stats.is_tx_nobuf++; 2134 ieee80211_free_node(ni); 2135 return ENOMEM; 2136 } 2137} 2138 2139static int 2140mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2141 int category, int action, void *args0) 2142{ 2143 struct ieee80211vap *vap = ni->ni_vap; 2144 struct ieee80211com *ic = ni->ni_ic; 2145 uint32_t *metric = args0; 2146 struct mbuf *m; 2147 uint8_t *frm; 2148 2149 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2150 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2151 2152 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2153 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2154 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2155 ieee80211_ref_node(ni); 2156 2157 m = ieee80211_getmgtframe(&frm, 2158 ic->ic_headroom + sizeof(struct ieee80211_frame), 2159 sizeof(uint16_t) /* action+category */ 2160 + sizeof(struct ieee80211_meshlmetric_ie) 2161 ); 2162 if (m != NULL) { 2163 /* 2164 * mesh link metric reply 2165 * [1] category 2166 * [1] action 2167 * [tlv] mesh link metric 2168 */ 2169 *frm++ = category; 2170 *frm++ = action; 2171 frm = ieee80211_add_meshlmetric(frm, *metric); 2172 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2173 return mesh_send_action(ni, m); 2174 } else { 2175 vap->iv_stats.is_tx_nobuf++; 2176 ieee80211_free_node(ni); 2177 return ENOMEM; 2178 } 2179} 2180 2181static void 2182mesh_peer_timeout_setup(struct ieee80211_node *ni) 2183{ 2184 switch (ni->ni_mlstate) { 2185 case IEEE80211_NODE_MESH_HOLDING: 2186 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2187 break; 2188 case IEEE80211_NODE_MESH_CONFIRMRCV: 2189 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2190 break; 2191 case IEEE80211_NODE_MESH_IDLE: 2192 ni->ni_mltval = 0; 2193 break; 2194 default: 2195 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2196 break; 2197 } 2198 if (ni->ni_mltval) 2199 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2200 mesh_peer_timeout_cb, ni); 2201} 2202 2203/* 2204 * Same as above but backoffs timer statisically 50%. 2205 */ 2206static void 2207mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2208{ 2209 uint32_t r; 2210 2211 r = arc4random(); 2212 ni->ni_mltval += r % ni->ni_mltval; 2213 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2214 ni); 2215} 2216 2217static __inline void 2218mesh_peer_timeout_stop(struct ieee80211_node *ni) 2219{ 2220 callout_drain(&ni->ni_mltimer); 2221} 2222 2223/* 2224 * Mesh Peer Link Management FSM timeout handling. 2225 */ 2226static void 2227mesh_peer_timeout_cb(void *arg) 2228{ 2229 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2230 uint16_t args[3]; 2231 2232 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2233 ni, "mesh link timeout, state %d, retry counter %d", 2234 ni->ni_mlstate, ni->ni_mlrcnt); 2235 2236 switch (ni->ni_mlstate) { 2237 case IEEE80211_NODE_MESH_IDLE: 2238 case IEEE80211_NODE_MESH_ESTABLISHED: 2239 break; 2240 case IEEE80211_NODE_MESH_OPENSNT: 2241 case IEEE80211_NODE_MESH_OPENRCV: 2242 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2243 args[0] = ni->ni_mlpid; 2244 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2245 ieee80211_send_action(ni, 2246 IEEE80211_ACTION_CAT_MESHPEERING, 2247 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2248 ni->ni_mlrcnt = 0; 2249 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2250 mesh_peer_timeout_setup(ni); 2251 } else { 2252 args[0] = ni->ni_mlpid; 2253 ieee80211_send_action(ni, 2254 IEEE80211_ACTION_CAT_MESHPEERING, 2255 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2256 ni->ni_mlrcnt++; 2257 mesh_peer_timeout_backoff(ni); 2258 } 2259 break; 2260 case IEEE80211_NODE_MESH_CONFIRMRCV: 2261 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2262 args[0] = ni->ni_mlpid; 2263 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2264 ieee80211_send_action(ni, 2265 IEEE80211_ACTION_CAT_MESHPEERING, 2266 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2267 ni->ni_mlrcnt = 0; 2268 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2269 mesh_peer_timeout_setup(ni); 2270 } else { 2271 ni->ni_mlrcnt++; 2272 mesh_peer_timeout_setup(ni); 2273 } 2274 break; 2275 case IEEE80211_NODE_MESH_HOLDING: 2276 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2277 break; 2278 } 2279} 2280 2281static int 2282mesh_verify_meshpeerver(struct ieee80211vap *vap, const uint8_t *ie) 2283{ 2284 static const uint8_t peer[4] = IEEE80211_MESHPEERVER_PEER; 2285 const struct ieee80211_meshpeerver_ie *meshpeerver = 2286 (const struct ieee80211_meshpeerver_ie *) ie; 2287 2288 if (meshpeerver->peerver_len != 2289 sizeof(struct ieee80211_meshpeerver_ie) - 2) 2290 return 1; 2291 return memcmp(meshpeerver->peerver_proto, peer, 4); 2292} 2293 2294static int 2295mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2296{ 2297 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2298 2299 if (ie == NULL || ie[1] != ms->ms_idlen) 2300 return 1; 2301 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2302} 2303 2304/* 2305 * Check if we are using the same algorithms for this mesh. 2306 */ 2307static int 2308mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2309{ 2310 static const uint8_t null[4] = IEEE80211_MESHCONF_NULL; 2311 const struct ieee80211_meshconf_ie *meshconf = 2312 (const struct ieee80211_meshconf_ie *) ie; 2313 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2314 2315 if (meshconf == NULL) 2316 return 1; 2317 if (meshconf->conf_ver != IEEE80211_MESHCONF_VERSION) { 2318 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2319 "wrong mesh conf version: %d\n", meshconf->conf_ver); 2320 return 1; 2321 } 2322 if (memcmp(meshconf->conf_pselid, ms->ms_ppath->mpp_ie, 4) != 0) { 2323 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2324 "unknown path selection algorithm: 0x%x%x%x%x\n", 2325 meshconf->conf_pselid[0], meshconf->conf_pselid[1], 2326 meshconf->conf_pselid[2], meshconf->conf_pselid[3]); 2327 return 1; 2328 } 2329 if (memcmp(meshconf->conf_pmetid, ms->ms_pmetric->mpm_ie, 4) != 0) { 2330 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2331 "unknown path metric algorithm: 0x%x%x%x%x\n", 2332 meshconf->conf_pmetid[0], meshconf->conf_pmetid[1], 2333 meshconf->conf_pmetid[2], meshconf->conf_pmetid[3]); 2334 return 1; 2335 } 2336 if (memcmp(meshconf->conf_ccid, null, 4) != 0) { 2337 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2338 "unknown congestion sig algorithm: 0x%x%x%x%x\n", 2339 meshconf->conf_ccid[0], meshconf->conf_ccid[1], 2340 meshconf->conf_ccid[2], meshconf->conf_ccid[3]); 2341 return 1; 2342 } 2343 if (memcmp(meshconf->conf_syncid, null, 4) != 0) { 2344 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2345 "unknown sync algorithm: 0x%x%x%x%x\n", 2346 meshconf->conf_syncid[0], meshconf->conf_syncid[1], 2347 meshconf->conf_syncid[2], meshconf->conf_syncid[3]); 2348 return 1; 2349 } 2350 if (memcmp(meshconf->conf_authid, null, 4) != 0) { 2351 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2352 "unknown auth auth algorithm: 0x%x%x%x%x\n", 2353 meshconf->conf_pselid[0], meshconf->conf_pselid[1], 2354 meshconf->conf_pselid[2], meshconf->conf_pselid[3]); 2355 return 1; 2356 } 2357 /* Not accepting peers */ 2358 if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) { 2359 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2360 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2361 return 1; 2362 } 2363 return 0; 2364} 2365 2366static int 2367mesh_verify_meshpeer(struct ieee80211vap *vap, const uint8_t *ie) 2368{ 2369 const struct ieee80211_meshpeer_ie *meshpeer = 2370 (const struct ieee80211_meshpeer_ie *) ie; 2371 2372 if (meshpeer == NULL) 2373 return 1; 2374 switch (meshpeer->peer_subtype) { 2375 case IEEE80211_MESH_PEER_LINK_OPEN: 2376 if (meshpeer->peer_len != 3) 2377 return 1; 2378 break; 2379 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2380 if (meshpeer->peer_len != 5) 2381 return 1; 2382 break; 2383 case IEEE80211_MESH_PEER_LINK_CLOSE: 2384 if (meshpeer->peer_len < 5) 2385 return 1; 2386 if (meshpeer->peer_len == 5 && meshpeer->peer_linkid != 0) 2387 return 1; 2388 if (meshpeer->peer_rcode == 0) 2389 return 1; 2390 break; 2391 } 2392 return 0; 2393} 2394 2395/* 2396 * Add a Mesh ID IE to a frame. 2397 */ 2398uint8_t * 2399ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2400{ 2401 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2402 2403 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2404 2405 *frm++ = IEEE80211_ELEMID_MESHID; 2406 *frm++ = ms->ms_idlen; 2407 memcpy(frm, ms->ms_id, ms->ms_idlen); 2408 return frm + ms->ms_idlen; 2409} 2410 2411/* 2412 * Add a Mesh Configuration IE to a frame. 2413 * For now just use HWMP routing, Airtime link metric, Null Congestion 2414 * Signaling, Null Sync Protocol and Null Authentication. 2415 */ 2416uint8_t * 2417ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2418{ 2419 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2420 static const uint8_t null[4] = IEEE80211_MESHCONF_NULL; 2421 2422 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2423 2424 *frm++ = IEEE80211_ELEMID_MESHCONF; 2425 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2426 *frm++ = IEEE80211_MESHCONF_VERSION; 2427 memcpy(frm, ms->ms_ppath->mpp_ie, 4); /* path selection */ 2428 frm += 4; 2429 memcpy(frm, ms->ms_pmetric->mpm_ie, 4); /* link metric */ 2430 frm += 4; 2431 /* XXX null for now */ 2432 memcpy(frm, null, 4); /* congestion control */ 2433 frm += 4; 2434 memcpy(frm, null, 4); /* sync */ 2435 frm += 4; 2436 memcpy(frm, null, 4); /* auth */ 2437 frm += 4; 2438 /* NB: set the number of neighbors before the rest */ 2439 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2440 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2441 *frm |= IEEE80211_MESHCONF_FORM_MP; 2442 frm += 1; 2443 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2444 *frm |= IEEE80211_MESHCONF_CAP_AP; 2445 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2446 *frm |= IEEE80211_MESHCONF_CAP_FWRD; 2447 frm += 1; 2448 return frm; 2449} 2450 2451/* 2452 * Add a Mesh Peer Protocol IE to a frame. 2453 * XXX: needs to grow support for Abbreviated Handshake 2454 */ 2455uint8_t * 2456ieee80211_add_meshpeerver(uint8_t *frm, struct ieee80211vap *vap) 2457{ 2458 static struct ieee80211_meshpeerver_ie ie = { 2459 .peerver_ie = IEEE80211_ELEMID_MESHPEERVER, 2460 .peerver_len = 4, 2461 .peerver_proto = IEEE80211_MESHPEERVER_PEER, 2462 }; 2463 2464 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2465 2466 memcpy(frm, &ie, sizeof(ie)); 2467 return frm + sizeof(ie); 2468} 2469 2470/* 2471 * Add a Mesh Peer Management IE to a frame. 2472 */ 2473uint8_t * 2474ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2475 uint16_t peerid, uint16_t reason) 2476{ 2477 KASSERT(localid != 0, ("localid == 0")); 2478 2479 *frm++ = IEEE80211_ELEMID_MESHPEER; 2480 switch (subtype) { 2481 case IEEE80211_MESH_PEER_LINK_OPEN: 2482 *frm++ = 3; /* length */ 2483 *frm++ = subtype; 2484 ADDSHORT(frm, localid); /* local ID */ 2485 break; 2486 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2487 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2488 *frm++ = 5; /* length */ 2489 *frm++ = subtype; 2490 ADDSHORT(frm, localid); /* local ID */ 2491 ADDSHORT(frm, peerid); /* peer ID */ 2492 break; 2493 case IEEE80211_MESH_PEER_LINK_CLOSE: 2494 if (peerid) 2495 *frm++ = 7; /* length */ 2496 else 2497 *frm++ = 5; /* length */ 2498 *frm++ = subtype; 2499 ADDSHORT(frm, localid); /* local ID */ 2500 if (peerid) 2501 ADDSHORT(frm, peerid); /* peer ID */ 2502 ADDSHORT(frm, reason); 2503 break; 2504 } 2505 return frm; 2506} 2507 2508/* 2509 * Compute an Airtime Link Metric for the link with this node. 2510 * 2511 * Based on Draft 3.0 spec (11B.10, p.149). 2512 */ 2513/* 2514 * Max 802.11s overhead. 2515 */ 2516#define IEEE80211_MESH_MAXOVERHEAD \ 2517 (sizeof(struct ieee80211_qosframe_addr4) \ 2518 + sizeof(struct ieee80211_meshcntl_ae11) \ 2519 + sizeof(struct llc) \ 2520 + IEEE80211_ADDR_LEN \ 2521 + IEEE80211_WEP_IVLEN \ 2522 + IEEE80211_WEP_KIDLEN \ 2523 + IEEE80211_WEP_CRCLEN \ 2524 + IEEE80211_WEP_MICLEN \ 2525 + IEEE80211_CRC_LEN) 2526uint32_t 2527mesh_airtime_calc(struct ieee80211_node *ni) 2528{ 2529#define M_BITS 8 2530#define S_FACTOR (2 * M_BITS) 2531 struct ieee80211com *ic = ni->ni_ic; 2532 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2533 const static int nbits = 8192 << M_BITS; 2534 uint32_t overhead, rate, errrate; 2535 uint64_t res; 2536 2537 /* Time to transmit a frame */ 2538 rate = ni->ni_txrate; 2539 overhead = ieee80211_compute_duration(ic->ic_rt, 2540 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2541 /* Error rate in percentage */ 2542 /* XXX assuming small failures are ok */ 2543 errrate = (((ifp->if_oerrors + 2544 ifp->if_ierrors) / 100) << M_BITS) / 100; 2545 res = (overhead + (nbits / rate)) * 2546 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2547 2548 return (uint32_t)(res >> S_FACTOR); 2549#undef M_BITS 2550#undef S_FACTOR 2551} 2552 2553/* 2554 * Add a Mesh Link Metric report IE to a frame. 2555 */ 2556uint8_t * 2557ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2558{ 2559 *frm++ = IEEE80211_ELEMID_MESHLINK; 2560 *frm++ = 4; 2561 ADDWORD(frm, metric); 2562 return frm; 2563} 2564#undef ADDSHORT 2565#undef ADDWORD 2566 2567/* 2568 * Initialize any mesh-specific node state. 2569 */ 2570void 2571ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2572{ 2573 ni->ni_flags |= IEEE80211_NODE_QOS; 2574 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2575} 2576 2577/* 2578 * Cleanup any mesh-specific node state. 2579 */ 2580void 2581ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2582{ 2583 struct ieee80211vap *vap = ni->ni_vap; 2584 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2585 2586 callout_drain(&ni->ni_mltimer); 2587 /* NB: short-circuit callbacks after mesh_vdetach */ 2588 if (vap->iv_mesh != NULL) 2589 ms->ms_ppath->mpp_peerdown(ni); 2590} 2591 2592void 2593ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2594{ 2595 ni->ni_meshidlen = ie[1]; 2596 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2597} 2598 2599/* 2600 * Setup mesh-specific node state on neighbor discovery. 2601 */ 2602void 2603ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2604 const struct ieee80211_frame *wh, 2605 const struct ieee80211_scanparams *sp) 2606{ 2607 ieee80211_parse_meshid(ni, sp->meshid); 2608} 2609 2610static int 2611mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2612{ 2613 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2614 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2615 struct ieee80211_mesh_route *rt; 2616 struct ieee80211req_mesh_route *imr; 2617 size_t len, off; 2618 uint8_t *p; 2619 int error; 2620 2621 if (vap->iv_opmode != IEEE80211_M_MBSS) 2622 return ENOSYS; 2623 2624 error = 0; 2625 switch (ireq->i_type) { 2626 case IEEE80211_IOC_MESH_ID: 2627 ireq->i_len = ms->ms_idlen; 2628 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2629 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2630 break; 2631 case IEEE80211_IOC_MESH_AP: 2632 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2633 break; 2634 case IEEE80211_IOC_MESH_FWRD: 2635 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2636 break; 2637 case IEEE80211_IOC_MESH_TTL: 2638 ireq->i_val = ms->ms_ttl; 2639 break; 2640 case IEEE80211_IOC_MESH_RTCMD: 2641 switch (ireq->i_val) { 2642 case IEEE80211_MESH_RTCMD_LIST: 2643 len = 0; 2644 MESH_RT_LOCK(ms); 2645 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2646 len += sizeof(*imr); 2647 } 2648 MESH_RT_UNLOCK(ms); 2649 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2650 ireq->i_len = len; 2651 return ENOMEM; 2652 } 2653 ireq->i_len = len; 2654 /* XXX M_WAIT? */ 2655 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2656 if (p == NULL) 2657 return ENOMEM; 2658 off = 0; 2659 MESH_RT_LOCK(ms); 2660 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2661 if (off >= len) 2662 break; 2663 imr = (struct ieee80211req_mesh_route *) 2664 (p + off); 2665 imr->imr_flags = rt->rt_flags; 2666 IEEE80211_ADDR_COPY(imr->imr_dest, 2667 rt->rt_dest); 2668 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2669 rt->rt_nexthop); 2670 imr->imr_metric = rt->rt_metric; 2671 imr->imr_nhops = rt->rt_nhops; 2672 imr->imr_lifetime = rt->rt_lifetime; 2673 imr->imr_lastmseq = rt->rt_lastmseq; 2674 off += sizeof(*imr); 2675 } 2676 MESH_RT_UNLOCK(ms); 2677 error = copyout(p, (uint8_t *)ireq->i_data, 2678 ireq->i_len); 2679 free(p, M_TEMP); 2680 break; 2681 case IEEE80211_MESH_RTCMD_FLUSH: 2682 case IEEE80211_MESH_RTCMD_ADD: 2683 case IEEE80211_MESH_RTCMD_DELETE: 2684 return EINVAL; 2685 default: 2686 return ENOSYS; 2687 } 2688 break; 2689 case IEEE80211_IOC_MESH_PR_METRIC: 2690 len = strlen(ms->ms_pmetric->mpm_descr); 2691 if (ireq->i_len < len) 2692 return EINVAL; 2693 ireq->i_len = len; 2694 error = copyout(ms->ms_pmetric->mpm_descr, 2695 (uint8_t *)ireq->i_data, len); 2696 break; 2697 case IEEE80211_IOC_MESH_PR_PATH: 2698 len = strlen(ms->ms_ppath->mpp_descr); 2699 if (ireq->i_len < len) 2700 return EINVAL; 2701 ireq->i_len = len; 2702 error = copyout(ms->ms_ppath->mpp_descr, 2703 (uint8_t *)ireq->i_data, len); 2704 break; 2705 default: 2706 return ENOSYS; 2707 } 2708 2709 return error; 2710} 2711IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2712 2713static int 2714mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2715{ 2716 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2717 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2718 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2719 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2720 int error; 2721 2722 if (vap->iv_opmode != IEEE80211_M_MBSS) 2723 return ENOSYS; 2724 2725 error = 0; 2726 switch (ireq->i_type) { 2727 case IEEE80211_IOC_MESH_ID: 2728 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2729 return EINVAL; 2730 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2731 if (error != 0) 2732 break; 2733 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2734 ms->ms_idlen = ireq->i_len; 2735 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2736 error = ENETRESET; 2737 break; 2738 case IEEE80211_IOC_MESH_AP: 2739 if (ireq->i_val) 2740 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2741 else 2742 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2743 error = ENETRESET; 2744 break; 2745 case IEEE80211_IOC_MESH_FWRD: 2746 if (ireq->i_val) 2747 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2748 else 2749 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2750 break; 2751 case IEEE80211_IOC_MESH_TTL: 2752 ms->ms_ttl = (uint8_t) ireq->i_val; 2753 break; 2754 case IEEE80211_IOC_MESH_RTCMD: 2755 switch (ireq->i_val) { 2756 case IEEE80211_MESH_RTCMD_LIST: 2757 return EINVAL; 2758 case IEEE80211_MESH_RTCMD_FLUSH: 2759 ieee80211_mesh_rt_flush(vap); 2760 break; 2761 case IEEE80211_MESH_RTCMD_ADD: 2762 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2763 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2764 return EINVAL; 2765 error = copyin(ireq->i_data, &tmpaddr, 2766 IEEE80211_ADDR_LEN); 2767 if (error == 0) 2768 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2769 break; 2770 case IEEE80211_MESH_RTCMD_DELETE: 2771 ieee80211_mesh_rt_del(vap, ireq->i_data); 2772 break; 2773 default: 2774 return ENOSYS; 2775 } 2776 break; 2777 case IEEE80211_IOC_MESH_PR_METRIC: 2778 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2779 if (error == 0) { 2780 error = mesh_select_proto_metric(vap, tmpproto); 2781 if (error == 0) 2782 error = ENETRESET; 2783 } 2784 break; 2785 case IEEE80211_IOC_MESH_PR_PATH: 2786 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2787 if (error == 0) { 2788 error = mesh_select_proto_path(vap, tmpproto); 2789 if (error == 0) 2790 error = ENETRESET; 2791 } 2792 break; 2793 default: 2794 return ENOSYS; 2795 } 2796 return error; 2797} 2798IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2799