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 * $FreeBSD: head/sys/net80211/ieee80211_mesh.c 203423 2010-02-03 10:12:49Z rpaulo $ 30 * $DragonFly$ 31 */ 32 33 /* 34 * IEEE 802.11s Mesh Point (MBSS) support. 35 * 36 * Based on March 2009, D3.0 802.11s draft spec. 37 */ 38 #include "opt_inet.h" 39 #include "opt_wlan.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/mbuf.h> 44 #include <sys/malloc.h> 45 #include <sys/kernel.h> 46 47 #include <sys/socket.h> 48 #include <sys/sockio.h> 49 #include <sys/endian.h> 50 #include <sys/errno.h> 51 #include <sys/proc.h> 52 #include <sys/sysctl.h> 53 54 #include <net/if.h> 55 #include <net/if_media.h> 56 #include <net/if_llc.h> 57 #include <net/ethernet.h> 58 #include <net/route.h> 59 60 #include <netproto/802_11/ieee80211_var.h> 61 #include <netproto/802_11/ieee80211_action.h> 62 #include <netproto/802_11/ieee80211_input.h> 63 #include <netproto/802_11/ieee80211_mesh.h> 64 65 static void mesh_rt_flush_invalid(struct ieee80211vap *); 66 static int mesh_select_proto_path(struct ieee80211vap *, const char *); 67 static int mesh_select_proto_metric(struct ieee80211vap *, const char *); 68 static void mesh_vattach(struct ieee80211vap *); 69 static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); 70 static void mesh_rt_cleanup_cb(void *); 71 static void mesh_linkchange(struct ieee80211_node *, 72 enum ieee80211_mesh_mlstate); 73 static void mesh_checkid(void *, struct ieee80211_node *); 74 static uint32_t mesh_generateid(struct ieee80211vap *); 75 static int mesh_checkpseq(struct ieee80211vap *, 76 const uint8_t [IEEE80211_ADDR_LEN], uint32_t); 77 static struct ieee80211_node * 78 mesh_find_txnode(struct ieee80211vap *, 79 const uint8_t [IEEE80211_ADDR_LEN]); 80 static void mesh_forward(struct ieee80211vap *, struct mbuf *, 81 const struct ieee80211_meshcntl *); 82 static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int); 83 static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 84 int, int); 85 static void mesh_peer_timeout_setup(struct ieee80211_node *); 86 static void mesh_peer_timeout_backoff(struct ieee80211_node *); 87 static void mesh_peer_timeout_cb(void *); 88 static __inline void 89 mesh_peer_timeout_stop(struct ieee80211_node *); 90 static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 91 static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 92 static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 93 const uint8_t *); 94 uint32_t mesh_airtime_calc(struct ieee80211_node *); 95 96 /* 97 * Timeout values come from the specification and are in milliseconds. 98 */ 99 SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 100 "IEEE 802.11s parameters"); 101 static int ieee80211_mesh_retrytimeout = -1; 102 SYSCTL_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)"); 105 static int ieee80211_mesh_holdingtimeout = -1; 106 SYSCTL_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)"); 109 static int ieee80211_mesh_confirmtimeout = -1; 110 SYSCTL_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)"); 113 static int ieee80211_mesh_maxretries = 2; 114 SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 115 &ieee80211_mesh_maxretries, 0, 116 "Maximum retries during peer link establishment"); 117 118 static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 119 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 120 121 static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 122 static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 123 static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 124 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req; 125 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep; 126 127 static ieee80211_send_action_func mesh_send_action_meshpeering_open; 128 static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 129 static ieee80211_send_action_func mesh_send_action_meshpeering_close; 130 static ieee80211_send_action_func mesh_send_action_meshlink_request; 131 static ieee80211_send_action_func mesh_send_action_meshlink_reply; 132 133 static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 134 .mpm_descr = "AIRTIME", 135 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 136 .mpm_metric = mesh_airtime_calc, 137 }; 138 139 static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 140 static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 141 142 #define MESH_RT_LOCK(ms) lockmgr(&(ms)->ms_rt_lock, LK_EXCLUSIVE) 143 #define MESH_RT_LOCK_ASSERT(ms) \ 144 KKASSERT(lockstatus(&(ms)->ms_rt_lock, curthread) != 0) 145 #define MESH_RT_UNLOCK(ms) lockmgr(&(ms)->ms_rt_lock, LK_RELEASE) 146 147 MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 148 149 /* 150 * Helper functions to manipulate the Mesh routing table. 151 */ 152 153 static struct ieee80211_mesh_route * 154 mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 155 const uint8_t dest[IEEE80211_ADDR_LEN]) 156 { 157 struct ieee80211_mesh_route *rt; 158 159 MESH_RT_LOCK_ASSERT(ms); 160 161 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 162 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 163 return rt; 164 } 165 return NULL; 166 } 167 168 static struct ieee80211_mesh_route * 169 mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 170 const uint8_t dest[IEEE80211_ADDR_LEN]) 171 { 172 struct ieee80211_mesh_route *rt; 173 174 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 175 ("%s: adding broadcast to the routing table", __func__)); 176 177 MESH_RT_LOCK_ASSERT(ms); 178 179 rt = kmalloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 180 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_INTWAIT | M_ZERO); 181 if (rt != NULL) { 182 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 183 rt->rt_priv = (void *)ALIGN(&rt[1]); 184 rt->rt_crtime = ticks; 185 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 186 } 187 return rt; 188 } 189 190 struct ieee80211_mesh_route * 191 ieee80211_mesh_rt_find(struct ieee80211vap *vap, 192 const uint8_t dest[IEEE80211_ADDR_LEN]) 193 { 194 struct ieee80211_mesh_state *ms = vap->iv_mesh; 195 struct ieee80211_mesh_route *rt; 196 197 MESH_RT_LOCK(ms); 198 rt = mesh_rt_find_locked(ms, dest); 199 MESH_RT_UNLOCK(ms); 200 return rt; 201 } 202 203 struct ieee80211_mesh_route * 204 ieee80211_mesh_rt_add(struct ieee80211vap *vap, 205 const uint8_t dest[IEEE80211_ADDR_LEN]) 206 { 207 struct ieee80211_mesh_state *ms = vap->iv_mesh; 208 struct ieee80211_mesh_route *rt; 209 210 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 211 ("%s: duplicate entry in the routing table", __func__)); 212 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 213 ("%s: adding self to the routing table", __func__)); 214 215 MESH_RT_LOCK(ms); 216 rt = mesh_rt_add_locked(ms, dest); 217 MESH_RT_UNLOCK(ms); 218 return rt; 219 } 220 221 /* 222 * Add a proxy route (as needed) for the specified destination. 223 */ 224 void 225 ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 226 const uint8_t dest[IEEE80211_ADDR_LEN]) 227 { 228 struct ieee80211_mesh_state *ms = vap->iv_mesh; 229 struct ieee80211_mesh_route *rt; 230 231 MESH_RT_LOCK(ms); 232 rt = mesh_rt_find_locked(ms, dest); 233 if (rt == NULL) { 234 rt = mesh_rt_add_locked(ms, dest); 235 if (rt == NULL) { 236 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 237 "%s", "unable to add proxy entry"); 238 vap->iv_stats.is_mesh_rtaddfailed++; 239 } else { 240 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 241 "%s", "add proxy entry"); 242 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 243 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 244 | IEEE80211_MESHRT_FLAGS_PROXY; 245 } 246 /* XXX assert PROXY? */ 247 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 248 struct ieee80211com *ic = vap->iv_ic; 249 /* 250 * Fix existing entry created by received frames from 251 * stations that have some memory of dest. We also 252 * flush any frames held on the staging queue; delivering 253 * them is too much trouble right now. 254 */ 255 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 256 "%s", "fix proxy entry"); 257 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 258 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 259 | IEEE80211_MESHRT_FLAGS_PROXY; 260 /* XXX belongs in hwmp */ 261 ieee80211_ageq_drain_node(&ic->ic_stageq, 262 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 263 /* XXX stat? */ 264 } 265 MESH_RT_UNLOCK(ms); 266 } 267 268 static __inline void 269 mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 270 { 271 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 272 kfree(rt, M_80211_MESH_RT); 273 } 274 275 void 276 ieee80211_mesh_rt_del(struct ieee80211vap *vap, 277 const uint8_t dest[IEEE80211_ADDR_LEN]) 278 { 279 struct ieee80211_mesh_state *ms = vap->iv_mesh; 280 struct ieee80211_mesh_route *rt, *next; 281 282 MESH_RT_LOCK(ms); 283 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) { 284 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 285 mesh_rt_del(ms, rt); 286 MESH_RT_UNLOCK(ms); 287 return; 288 } 289 } 290 MESH_RT_UNLOCK(ms); 291 } 292 293 void 294 ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 295 { 296 struct ieee80211_mesh_state *ms = vap->iv_mesh; 297 struct ieee80211_mesh_route *rt, *next; 298 299 if (ms == NULL) 300 return; 301 MESH_RT_LOCK(ms); 302 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) 303 mesh_rt_del(ms, rt); 304 MESH_RT_UNLOCK(ms); 305 } 306 307 void 308 ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 309 const uint8_t peer[IEEE80211_ADDR_LEN]) 310 { 311 struct ieee80211_mesh_state *ms = vap->iv_mesh; 312 struct ieee80211_mesh_route *rt, *next; 313 314 MESH_RT_LOCK(ms); 315 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) { 316 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 317 mesh_rt_del(ms, rt); 318 } 319 MESH_RT_UNLOCK(ms); 320 } 321 322 /* 323 * Flush expired routing entries, i.e. those in invalid state for 324 * some time. 325 */ 326 static void 327 mesh_rt_flush_invalid(struct ieee80211vap *vap) 328 { 329 struct ieee80211_mesh_state *ms = vap->iv_mesh; 330 struct ieee80211_mesh_route *rt, *next; 331 332 if (ms == NULL) 333 return; 334 MESH_RT_LOCK(ms); 335 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) { 336 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 337 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 338 mesh_rt_del(ms, rt); 339 } 340 MESH_RT_UNLOCK(ms); 341 } 342 343 #define N(a) (sizeof(a) / sizeof(a[0])) 344 int 345 ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 346 { 347 int i, firstempty = -1; 348 349 for (i = 0; i < N(mesh_proto_paths); i++) { 350 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 351 IEEE80211_MESH_PROTO_DSZ) == 0) 352 return EEXIST; 353 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 354 firstempty = i; 355 } 356 if (firstempty < 0) 357 return ENOSPC; 358 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 359 mesh_proto_paths[firstempty].mpp_active = 1; 360 return 0; 361 } 362 363 int 364 ieee80211_mesh_register_proto_metric(const struct 365 ieee80211_mesh_proto_metric *mpm) 366 { 367 int i, firstempty = -1; 368 369 for (i = 0; i < N(mesh_proto_metrics); i++) { 370 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 371 IEEE80211_MESH_PROTO_DSZ) == 0) 372 return EEXIST; 373 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 374 firstempty = i; 375 } 376 if (firstempty < 0) 377 return ENOSPC; 378 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 379 mesh_proto_metrics[firstempty].mpm_active = 1; 380 return 0; 381 } 382 383 static int 384 mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 385 { 386 struct ieee80211_mesh_state *ms = vap->iv_mesh; 387 int i; 388 389 for (i = 0; i < N(mesh_proto_paths); i++) { 390 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 391 ms->ms_ppath = &mesh_proto_paths[i]; 392 return 0; 393 } 394 } 395 return ENOENT; 396 } 397 398 static int 399 mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 400 { 401 struct ieee80211_mesh_state *ms = vap->iv_mesh; 402 int i; 403 404 for (i = 0; i < N(mesh_proto_metrics); i++) { 405 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 406 ms->ms_pmetric = &mesh_proto_metrics[i]; 407 return 0; 408 } 409 } 410 return ENOENT; 411 } 412 #undef N 413 414 static void 415 ieee80211_mesh_init(void) 416 { 417 418 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 419 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 420 421 /* 422 * Setup mesh parameters that depends on the clock frequency. 423 */ 424 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 425 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 426 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 427 428 /* 429 * Register action frame handlers. 430 */ 431 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 432 IEEE80211_ACTION_MESHPEERING_OPEN, 433 mesh_recv_action_meshpeering_open); 434 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 435 IEEE80211_ACTION_MESHPEERING_CONFIRM, 436 mesh_recv_action_meshpeering_confirm); 437 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 438 IEEE80211_ACTION_MESHPEERING_CLOSE, 439 mesh_recv_action_meshpeering_close); 440 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 441 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 442 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 443 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 444 445 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 446 IEEE80211_ACTION_MESHPEERING_OPEN, 447 mesh_send_action_meshpeering_open); 448 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 449 IEEE80211_ACTION_MESHPEERING_CONFIRM, 450 mesh_send_action_meshpeering_confirm); 451 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 452 IEEE80211_ACTION_MESHPEERING_CLOSE, 453 mesh_send_action_meshpeering_close); 454 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 455 IEEE80211_ACTION_MESHLMETRIC_REQ, 456 mesh_send_action_meshlink_request); 457 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 458 IEEE80211_ACTION_MESHLMETRIC_REP, 459 mesh_send_action_meshlink_reply); 460 461 /* 462 * Register Airtime Link Metric. 463 */ 464 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 465 466 } 467 SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 468 469 void 470 ieee80211_mesh_attach(struct ieee80211com *ic) 471 { 472 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 473 } 474 475 void 476 ieee80211_mesh_detach(struct ieee80211com *ic) 477 { 478 } 479 480 static void 481 mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 482 { 483 struct ieee80211com *ic = ni->ni_ic; 484 uint16_t args[3]; 485 486 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 487 args[0] = ni->ni_mlpid; 488 args[1] = ni->ni_mllid; 489 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 490 ieee80211_send_action(ni, 491 IEEE80211_ACTION_CAT_MESHPEERING, 492 IEEE80211_ACTION_MESHPEERING_CLOSE, 493 args); 494 } 495 callout_stop(&ni->ni_mltimer); 496 /* XXX belongs in hwmp */ 497 ieee80211_ageq_drain_node(&ic->ic_stageq, 498 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 499 } 500 501 static void 502 mesh_vdetach(struct ieee80211vap *vap) 503 { 504 struct ieee80211_mesh_state *ms = vap->iv_mesh; 505 506 callout_stop(&ms->ms_cleantimer); 507 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 508 NULL); 509 ieee80211_mesh_rt_flush(vap); 510 lockuninit(&ms->ms_rt_lock); 511 ms->ms_ppath->mpp_vdetach(vap); 512 kfree(vap->iv_mesh, M_80211_VAP); 513 vap->iv_mesh = NULL; 514 } 515 516 static void 517 mesh_vattach(struct ieee80211vap *vap) 518 { 519 struct ieee80211_mesh_state *ms; 520 vap->iv_newstate = mesh_newstate; 521 vap->iv_input = mesh_input; 522 vap->iv_opdetach = mesh_vdetach; 523 vap->iv_recv_mgmt = mesh_recv_mgmt; 524 ms = kmalloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 525 M_INTWAIT | M_ZERO); 526 if (ms == NULL) { 527 kprintf("%s: couldn't alloc MBSS state\n", __func__); 528 return; 529 } 530 vap->iv_mesh = ms; 531 ms->ms_seq = 0; 532 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 533 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 534 TAILQ_INIT(&ms->ms_routes); 535 lockinit(&ms->ms_rt_lock, "MBSS", 0, 0); 536 callout_init_mp(&ms->ms_cleantimer); 537 mesh_select_proto_metric(vap, "AIRTIME"); 538 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 539 mesh_select_proto_path(vap, "HWMP"); 540 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 541 ms->ms_ppath->mpp_vattach(vap); 542 } 543 544 /* 545 * IEEE80211_M_MBSS vap state machine handler. 546 */ 547 static int 548 mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 549 { 550 struct ieee80211_mesh_state *ms = vap->iv_mesh; 551 struct ieee80211com *ic = vap->iv_ic; 552 struct ieee80211_node *ni; 553 enum ieee80211_state ostate; 554 555 IEEE80211_LOCK_ASSERT(ic); 556 557 ostate = vap->iv_state; 558 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 559 __func__, ieee80211_state_name[ostate], 560 ieee80211_state_name[nstate], arg); 561 vap->iv_state = nstate; /* state transition */ 562 if (ostate != IEEE80211_S_SCAN) 563 ieee80211_cancel_scan(vap); /* background scan */ 564 ni = vap->iv_bss; /* NB: no reference held */ 565 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 566 callout_stop(&ms->ms_cleantimer); 567 switch (nstate) { 568 case IEEE80211_S_INIT: 569 switch (ostate) { 570 case IEEE80211_S_SCAN: 571 ieee80211_cancel_scan(vap); 572 break; 573 case IEEE80211_S_CAC: 574 ieee80211_dfs_cac_stop(vap); 575 break; 576 case IEEE80211_S_RUN: 577 ieee80211_iterate_nodes(&ic->ic_sta, 578 mesh_vdetach_peers, NULL); 579 break; 580 default: 581 break; 582 } 583 if (ostate != IEEE80211_S_INIT) { 584 /* NB: optimize INIT -> INIT case */ 585 ieee80211_reset_bss(vap); 586 ieee80211_mesh_rt_flush(vap); 587 } 588 break; 589 case IEEE80211_S_SCAN: 590 switch (ostate) { 591 case IEEE80211_S_INIT: 592 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 593 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 594 ms->ms_idlen != 0) { 595 /* 596 * Already have a channel and a mesh ID; bypass 597 * the scan and startup immediately. 598 */ 599 ieee80211_create_ibss(vap, vap->iv_des_chan); 600 break; 601 } 602 /* 603 * Initiate a scan. We can come here as a result 604 * of an IEEE80211_IOC_SCAN_REQ too in which case 605 * the vap will be marked with IEEE80211_FEXT_SCANREQ 606 * and the scan request parameters will be present 607 * in iv_scanreq. Otherwise we do the default. 608 */ 609 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 610 ieee80211_check_scan(vap, 611 vap->iv_scanreq_flags, 612 vap->iv_scanreq_duration, 613 vap->iv_scanreq_mindwell, 614 vap->iv_scanreq_maxdwell, 615 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 616 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 617 } else 618 ieee80211_check_scan_current(vap); 619 break; 620 default: 621 break; 622 } 623 break; 624 case IEEE80211_S_CAC: 625 /* 626 * Start CAC on a DFS channel. We come here when starting 627 * a bss on a DFS channel (see ieee80211_create_ibss). 628 */ 629 ieee80211_dfs_cac_start(vap); 630 break; 631 case IEEE80211_S_RUN: 632 switch (ostate) { 633 case IEEE80211_S_INIT: 634 /* 635 * Already have a channel; bypass the 636 * scan and startup immediately. 637 * Note that ieee80211_create_ibss will call 638 * back to do a RUN->RUN state change. 639 */ 640 ieee80211_create_ibss(vap, 641 ieee80211_ht_adjust_channel(ic, 642 ic->ic_curchan, vap->iv_flags_ht)); 643 /* NB: iv_bss is changed on return */ 644 break; 645 case IEEE80211_S_CAC: 646 /* 647 * NB: This is the normal state change when CAC 648 * expires and no radar was detected; no need to 649 * clear the CAC timer as it's already expired. 650 */ 651 /* fall thru... */ 652 case IEEE80211_S_CSA: 653 #if 0 654 /* 655 * Shorten inactivity timer of associated stations 656 * to weed out sta's that don't follow a CSA. 657 */ 658 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 659 #endif 660 /* 661 * Update bss node channel to reflect where 662 * we landed after CSA. 663 */ 664 ieee80211_node_set_chan(vap->iv_bss, 665 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 666 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 667 /* XXX bypass debug msgs */ 668 break; 669 case IEEE80211_S_SCAN: 670 case IEEE80211_S_RUN: 671 #ifdef IEEE80211_DEBUG 672 if (ieee80211_msg_debug(vap)) { 673 struct ieee80211_node *ni = vap->iv_bss; 674 ieee80211_note(vap, 675 "synchronized with %6D meshid ", 676 ni->ni_meshid, ":"); 677 ieee80211_print_essid(ni->ni_meshid, 678 ni->ni_meshidlen); 679 /* XXX MCS/HT */ 680 kprintf(" channel %d\n", 681 ieee80211_chan2ieee(ic, ic->ic_curchan)); 682 } 683 #endif 684 break; 685 default: 686 break; 687 } 688 ieee80211_node_authorize(vap->iv_bss); 689 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 690 mesh_rt_cleanup_cb, vap); 691 break; 692 default: 693 break; 694 } 695 /* NB: ostate not nstate */ 696 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 697 return 0; 698 } 699 700 static void 701 mesh_rt_cleanup_cb(void *arg) 702 { 703 struct ieee80211vap *vap = arg; 704 struct ieee80211_mesh_state *ms = vap->iv_mesh; 705 706 mesh_rt_flush_invalid(vap); 707 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 708 mesh_rt_cleanup_cb, vap); 709 } 710 711 712 /* 713 * Helper function to note the Mesh Peer Link FSM change. 714 */ 715 static void 716 mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 717 { 718 struct ieee80211vap *vap = ni->ni_vap; 719 struct ieee80211_mesh_state *ms = vap->iv_mesh; 720 #ifdef IEEE80211_DEBUG 721 static const char *meshlinkstates[] = { 722 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 723 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 724 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 725 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 726 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 727 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 728 }; 729 #endif 730 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 731 ni, "peer link: %s -> %s", 732 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 733 734 /* track neighbor count */ 735 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 736 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 737 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 738 ms->ms_neighbors++; 739 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 740 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 741 state != IEEE80211_NODE_MESH_ESTABLISHED) { 742 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 743 ms->ms_neighbors--; 744 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 745 } 746 ni->ni_mlstate = state; 747 switch (state) { 748 case IEEE80211_NODE_MESH_HOLDING: 749 ms->ms_ppath->mpp_peerdown(ni); 750 break; 751 case IEEE80211_NODE_MESH_ESTABLISHED: 752 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 753 break; 754 default: 755 break; 756 } 757 } 758 759 /* 760 * Helper function to generate a unique local ID required for mesh 761 * peer establishment. 762 */ 763 static void 764 mesh_checkid(void *arg, struct ieee80211_node *ni) 765 { 766 uint16_t *r = arg; 767 768 if (*r == ni->ni_mllid) 769 *(uint16_t *)arg = 0; 770 } 771 772 static uint32_t 773 mesh_generateid(struct ieee80211vap *vap) 774 { 775 int maxiter = 4; 776 uint16_t r; 777 778 do { 779 get_random_bytes(&r, 2); 780 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 781 maxiter--; 782 } while (r == 0 && maxiter > 0); 783 return r; 784 } 785 786 /* 787 * Verifies if we already received this packet by checking its 788 * sequence number. 789 * Returns 0 if the frame is to be accepted, 1 otherwise. 790 */ 791 static int 792 mesh_checkpseq(struct ieee80211vap *vap, 793 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 794 { 795 struct ieee80211_mesh_route *rt; 796 797 rt = ieee80211_mesh_rt_find(vap, source); 798 if (rt == NULL) { 799 rt = ieee80211_mesh_rt_add(vap, source); 800 if (rt == NULL) { 801 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 802 "%s", "add mcast route failed"); 803 vap->iv_stats.is_mesh_rtaddfailed++; 804 return 1; 805 } 806 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 807 "add mcast route, mesh seqno %d", seq); 808 rt->rt_lastmseq = seq; 809 return 0; 810 } 811 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 812 return 1; 813 } else { 814 rt->rt_lastmseq = seq; 815 return 0; 816 } 817 } 818 819 /* 820 * Iterate the routing table and locate the next hop. 821 */ 822 static struct ieee80211_node * 823 mesh_find_txnode(struct ieee80211vap *vap, 824 const uint8_t dest[IEEE80211_ADDR_LEN]) 825 { 826 struct ieee80211_mesh_route *rt; 827 828 rt = ieee80211_mesh_rt_find(vap, dest); 829 if (rt == NULL) 830 return NULL; 831 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 832 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 833 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 834 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 835 /* XXX stat */ 836 return NULL; 837 } 838 return ieee80211_find_txnode(vap, rt->rt_nexthop); 839 } 840 841 /* 842 * Forward the specified frame. 843 * Decrement the TTL and set TA to our MAC address. 844 */ 845 static void 846 mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 847 const struct ieee80211_meshcntl *mc) 848 { 849 struct ieee80211com *ic = vap->iv_ic; 850 struct ieee80211_mesh_state *ms = vap->iv_mesh; 851 struct ifnet *ifp = vap->iv_ifp; 852 struct ifnet *parent = ic->ic_ifp; 853 const struct ieee80211_frame *wh = 854 mtod(m, const struct ieee80211_frame *); 855 struct mbuf *mcopy; 856 struct ieee80211_meshcntl *mccopy; 857 struct ieee80211_frame *whcopy; 858 struct ieee80211_node *ni; 859 int err; 860 861 if (mc->mc_ttl == 0) { 862 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 863 "%s", "frame not fwd'd, ttl 0"); 864 vap->iv_stats.is_mesh_fwd_ttl++; 865 return; 866 } 867 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 868 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 869 "%s", "frame not fwd'd, fwding disabled"); 870 vap->iv_stats.is_mesh_fwd_disabled++; 871 return; 872 } 873 mcopy = m_dup(m, MB_DONTWAIT); 874 if (mcopy == NULL) { 875 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 876 "%s", "frame not fwd'd, cannot dup"); 877 vap->iv_stats.is_mesh_fwd_nobuf++; 878 ifp->if_oerrors++; 879 return; 880 } 881 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 882 sizeof(struct ieee80211_meshcntl)); 883 if (mcopy == NULL) { 884 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 885 "%s", "frame not fwd'd, too short"); 886 vap->iv_stats.is_mesh_fwd_tooshort++; 887 ifp->if_oerrors++; 888 m_freem(mcopy); 889 return; 890 } 891 whcopy = mtod(mcopy, struct ieee80211_frame *); 892 mccopy = (struct ieee80211_meshcntl *) 893 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 894 /* XXX clear other bits? */ 895 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 896 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 897 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 898 ni = ieee80211_ref_node(vap->iv_bss); 899 mcopy->m_flags |= M_MCAST; 900 } else { 901 ni = mesh_find_txnode(vap, whcopy->i_addr3); 902 if (ni == NULL) { 903 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 904 "%s", "frame not fwd'd, no path"); 905 vap->iv_stats.is_mesh_fwd_nopath++; 906 m_freem(mcopy); 907 return; 908 } 909 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 910 } 911 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 912 mccopy->mc_ttl--; 913 914 /* XXX calculate priority so drivers can find the tx queue */ 915 M_WME_SETAC(mcopy, WME_AC_BE); 916 917 /* XXX do we know m_nextpkt is NULL? */ 918 mcopy->m_pkthdr.rcvif = (void *) ni; 919 err = ieee80211_handoff(parent, mcopy); 920 if (err != 0) { 921 /* NB: IFQ_HANDOFF reclaims mbuf */ 922 ieee80211_free_node(ni); 923 } else { 924 ifp->if_opackets++; 925 } 926 } 927 928 static struct mbuf * 929 mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 930 { 931 #define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 932 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 933 sizeof(struct ieee80211_meshcntl_ae11)]; 934 const struct ieee80211_qosframe_addr4 *wh; 935 const struct ieee80211_meshcntl_ae10 *mc; 936 struct ether_header *eh; 937 struct llc *llc; 938 int ae; 939 940 if (m->m_len < hdrlen + sizeof(*llc) && 941 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 942 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 943 "discard data frame: %s", "m_pullup failed"); 944 vap->iv_stats.is_rx_tooshort++; 945 return NULL; 946 } 947 memcpy(b, mtod(m, caddr_t), hdrlen); 948 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 949 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 950 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 951 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 952 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 953 954 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 955 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 956 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 957 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 958 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 959 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 960 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 961 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 962 llc = NULL; 963 } else { 964 m_adj(m, hdrlen - sizeof(*eh)); 965 } 966 eh = mtod(m, struct ether_header *); 967 ae = mc->mc_flags & 3; 968 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 969 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 970 if (ae == 0) { 971 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 972 } else if (ae == 1) { 973 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 974 } else { 975 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 976 (const struct ieee80211_frame *)wh, NULL, 977 "bad AE %d", ae); 978 vap->iv_stats.is_mesh_badae++; 979 m_freem(m); 980 return NULL; 981 } 982 } else { 983 if (ae == 0) { 984 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 985 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 986 } else if (ae == 2) { 987 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 988 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 989 } else { 990 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 991 (const struct ieee80211_frame *)wh, NULL, 992 "bad AE %d", ae); 993 vap->iv_stats.is_mesh_badae++; 994 m_freem(m); 995 return NULL; 996 } 997 } 998 #ifdef ALIGNED_POINTER 999 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 1000 m = ieee80211_realign(vap, m, sizeof(*eh)); 1001 if (m == NULL) 1002 return NULL; 1003 } 1004 #endif /* ALIGNED_POINTER */ 1005 if (llc != NULL) { 1006 eh = mtod(m, struct ether_header *); 1007 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 1008 } 1009 return m; 1010 #undef WDIR 1011 } 1012 1013 /* 1014 * Return non-zero if the unicast mesh data frame should be processed 1015 * locally. Frames that are not proxy'd have our address, otherwise 1016 * we need to consult the routing table to look for a proxy entry. 1017 */ 1018 static __inline int 1019 mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 1020 const struct ieee80211_meshcntl *mc) 1021 { 1022 int ae = mc->mc_flags & 3; 1023 1024 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1025 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1026 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1027 if (ae == 2) { /* ucast w/ proxy */ 1028 const struct ieee80211_meshcntl_ae10 *mc10 = 1029 (const struct ieee80211_meshcntl_ae10 *) mc; 1030 struct ieee80211_mesh_route *rt = 1031 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1032 /* check for proxy route to ourself */ 1033 return (rt != NULL && 1034 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1035 } else /* ucast w/o proxy */ 1036 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1037 } 1038 1039 static int 1040 mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1041 { 1042 #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1043 #define HAS_SEQ(type) ((type & 0x4) == 0) 1044 struct ieee80211vap *vap = ni->ni_vap; 1045 struct ieee80211com *ic = ni->ni_ic; 1046 struct ifnet *ifp = vap->iv_ifp; 1047 struct ieee80211_frame *wh; 1048 const struct ieee80211_meshcntl *mc; 1049 int hdrspace, meshdrlen, need_tap; 1050 uint8_t dir, type, subtype, qos; 1051 uint32_t seq; 1052 uint8_t *addr; 1053 ieee80211_seq rxseq; 1054 1055 KASSERT(ni != NULL, ("null node")); 1056 ni->ni_inact = ni->ni_inact_reload; 1057 1058 need_tap = 1; /* mbuf need to be tapped. */ 1059 type = -1; /* undefined */ 1060 1061 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1062 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1063 ni->ni_macaddr, NULL, 1064 "too short (1): len %u", m->m_pkthdr.len); 1065 vap->iv_stats.is_rx_tooshort++; 1066 goto out; 1067 } 1068 /* 1069 * Bit of a cheat here, we use a pointer for a 3-address 1070 * frame format but don't reference fields past outside 1071 * ieee80211_frame_min w/o first validating the data is 1072 * present. 1073 */ 1074 wh = mtod(m, struct ieee80211_frame *); 1075 1076 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1077 IEEE80211_FC0_VERSION_0) { 1078 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1079 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1080 vap->iv_stats.is_rx_badversion++; 1081 goto err; 1082 } 1083 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1084 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1085 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1086 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1087 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1088 ni->ni_noise = nf; 1089 if (HAS_SEQ(type)) { 1090 uint8_t tid = ieee80211_gettid(wh); 1091 1092 if (IEEE80211_QOS_HAS_SEQ(wh) && 1093 TID_TO_WME_AC(tid) >= WME_AC_VI) 1094 ic->ic_wme.wme_hipri_traffic++; 1095 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1096 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1097 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1098 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1099 /* duplicate, discard */ 1100 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1101 wh->i_addr1, "duplicate", 1102 "seqno <%u,%u> fragno <%u,%u> tid %u", 1103 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1104 ni->ni_rxseqs[tid] >> 1105 IEEE80211_SEQ_SEQ_SHIFT, 1106 rxseq & IEEE80211_SEQ_FRAG_MASK, 1107 ni->ni_rxseqs[tid] & 1108 IEEE80211_SEQ_FRAG_MASK, 1109 tid); 1110 vap->iv_stats.is_rx_dup++; 1111 IEEE80211_NODE_STAT(ni, rx_dup); 1112 goto out; 1113 } 1114 ni->ni_rxseqs[tid] = rxseq; 1115 } 1116 } 1117 #ifdef IEEE80211_DEBUG 1118 /* 1119 * It's easier, but too expensive, to simulate different mesh 1120 * topologies by consulting the ACL policy very early, so do this 1121 * only under DEBUG. 1122 * 1123 * NB: this check is also done upon peering link initiation. 1124 */ 1125 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1126 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1127 wh, NULL, "%s", "disallowed by ACL"); 1128 vap->iv_stats.is_rx_acl++; 1129 goto out; 1130 } 1131 #endif 1132 switch (type) { 1133 case IEEE80211_FC0_TYPE_DATA: 1134 if (ni == vap->iv_bss) 1135 goto out; 1136 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1137 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1138 ni->ni_macaddr, NULL, 1139 "peer link not yet established (%d)", 1140 ni->ni_mlstate); 1141 vap->iv_stats.is_mesh_nolink++; 1142 goto out; 1143 } 1144 if (dir != IEEE80211_FC1_DIR_FROMDS && 1145 dir != IEEE80211_FC1_DIR_DSTODS) { 1146 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1147 wh, "data", "incorrect dir 0x%x", dir); 1148 vap->iv_stats.is_rx_wrongdir++; 1149 goto err; 1150 } 1151 /* pull up enough to get to the mesh control */ 1152 hdrspace = ieee80211_hdrspace(ic, wh); 1153 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1154 (m = m_pullup(m, hdrspace + 1155 sizeof(struct ieee80211_meshcntl))) == NULL) { 1156 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1157 ni->ni_macaddr, NULL, 1158 "data too short: expecting %u", hdrspace); 1159 vap->iv_stats.is_rx_tooshort++; 1160 goto out; /* XXX */ 1161 } 1162 /* 1163 * Now calculate the full extent of the headers. Note 1164 * mesh_decap will pull up anything we didn't get 1165 * above when it strips the 802.11 headers. 1166 */ 1167 mc = (const struct ieee80211_meshcntl *) 1168 (mtod(m, const uint8_t *) + hdrspace); 1169 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1170 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1171 hdrspace += meshdrlen; 1172 seq = LE_READ_4(mc->mc_seq); 1173 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1174 addr = wh->i_addr3; 1175 else 1176 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1177 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1178 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1179 addr, "data", "%s", "not to me"); 1180 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1181 goto out; 1182 } 1183 if (mesh_checkpseq(vap, addr, seq) != 0) { 1184 vap->iv_stats.is_rx_dup++; 1185 goto out; 1186 } 1187 1188 /* 1189 * Potentially forward packet. See table s36 (p140) 1190 * for the rules. XXX tap fwd'd packets not for us? 1191 */ 1192 if (dir == IEEE80211_FC1_DIR_FROMDS || 1193 !mesh_isucastforme(vap, wh, mc)) { 1194 mesh_forward(vap, m, mc); 1195 if (dir == IEEE80211_FC1_DIR_DSTODS) 1196 goto out; 1197 /* NB: fall thru to deliver mcast frames locally */ 1198 } 1199 1200 /* 1201 * Save QoS bits for use below--before we strip the header. 1202 */ 1203 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1204 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1205 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1206 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1207 } else 1208 qos = 0; 1209 /* 1210 * Next up, any fragmentation. 1211 */ 1212 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1213 m = ieee80211_defrag(ni, m, hdrspace); 1214 if (m == NULL) { 1215 /* Fragment dropped or frame not complete yet */ 1216 goto out; 1217 } 1218 } 1219 wh = NULL; /* no longer valid, catch any uses */ 1220 1221 if (ieee80211_radiotap_active_vap(vap)) 1222 ieee80211_radiotap_rx(vap, m); 1223 need_tap = 0; 1224 1225 /* 1226 * Finally, strip the 802.11 header. 1227 */ 1228 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1229 if (m == NULL) { 1230 /* XXX mask bit to check for both */ 1231 /* don't count Null data frames as errors */ 1232 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1233 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1234 goto out; 1235 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1236 ni->ni_macaddr, "data", "%s", "decap error"); 1237 vap->iv_stats.is_rx_decap++; 1238 IEEE80211_NODE_STAT(ni, rx_decap); 1239 goto err; 1240 } 1241 if (qos & IEEE80211_QOS_AMSDU) { 1242 m = ieee80211_decap_amsdu(ni, m); 1243 if (m == NULL) 1244 return IEEE80211_FC0_TYPE_DATA; 1245 } 1246 ieee80211_deliver_data(vap, ni, m); 1247 return type; 1248 case IEEE80211_FC0_TYPE_MGT: 1249 vap->iv_stats.is_rx_mgmt++; 1250 IEEE80211_NODE_STAT(ni, rx_mgmt); 1251 if (dir != IEEE80211_FC1_DIR_NODS) { 1252 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1253 wh, "mgt", "incorrect dir 0x%x", dir); 1254 vap->iv_stats.is_rx_wrongdir++; 1255 goto err; 1256 } 1257 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1258 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1259 ni->ni_macaddr, "mgt", "too short: len %u", 1260 m->m_pkthdr.len); 1261 vap->iv_stats.is_rx_tooshort++; 1262 goto out; 1263 } 1264 #ifdef IEEE80211_DEBUG 1265 if ((ieee80211_msg_debug(vap) && 1266 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1267 ieee80211_msg_dumppkts(vap)) { 1268 if_printf(ifp, "received %s from %6D rssi %d\n", 1269 ieee80211_mgt_subtype_name[subtype >> 1270 IEEE80211_FC0_SUBTYPE_SHIFT], 1271 wh->i_addr2, ":", rssi); 1272 } 1273 #endif 1274 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1275 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1276 wh, NULL, "%s", "WEP set but not permitted"); 1277 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1278 goto out; 1279 } 1280 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1281 goto out; 1282 case IEEE80211_FC0_TYPE_CTL: 1283 vap->iv_stats.is_rx_ctl++; 1284 IEEE80211_NODE_STAT(ni, rx_ctrl); 1285 goto out; 1286 default: 1287 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1288 wh, "bad", "frame type 0x%x", type); 1289 /* should not come here */ 1290 break; 1291 } 1292 err: 1293 ifp->if_ierrors++; 1294 out: 1295 if (m != NULL) { 1296 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1297 ieee80211_radiotap_rx(vap, m); 1298 m_freem(m); 1299 } 1300 return type; 1301 } 1302 1303 static void 1304 mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1305 int rssi, int nf) 1306 { 1307 struct ieee80211vap *vap = ni->ni_vap; 1308 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1309 struct ieee80211com *ic = ni->ni_ic; 1310 struct ieee80211_frame *wh; 1311 uint8_t *frm, *efrm; 1312 1313 wh = mtod(m0, struct ieee80211_frame *); 1314 frm = (uint8_t *)&wh[1]; 1315 efrm = mtod(m0, uint8_t *) + m0->m_len; 1316 switch (subtype) { 1317 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1318 case IEEE80211_FC0_SUBTYPE_BEACON: 1319 { 1320 struct ieee80211_scanparams scan; 1321 /* 1322 * We process beacon/probe response 1323 * frames to discover neighbors. 1324 */ 1325 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1326 return; 1327 /* 1328 * Count frame now that we know it's to be processed. 1329 */ 1330 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1331 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1332 IEEE80211_NODE_STAT(ni, rx_beacons); 1333 } else 1334 IEEE80211_NODE_STAT(ni, rx_proberesp); 1335 /* 1336 * If scanning, just pass information to the scan module. 1337 */ 1338 if (ic->ic_flags & IEEE80211_F_SCAN) { 1339 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1340 /* 1341 * Actively scanning a channel marked passive; 1342 * send a probe request now that we know there 1343 * is 802.11 traffic present. 1344 * 1345 * XXX check if the beacon we recv'd gives 1346 * us what we need and suppress the probe req 1347 */ 1348 ieee80211_probe_curchan(vap, 1); 1349 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1350 } 1351 ieee80211_add_scan(vap, &scan, wh, 1352 subtype, rssi, nf); 1353 return; 1354 } 1355 1356 /* The rest of this code assumes we are running */ 1357 if (vap->iv_state != IEEE80211_S_RUN) 1358 return; 1359 /* 1360 * Ignore non-mesh STAs. 1361 */ 1362 if ((scan.capinfo & 1363 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1364 scan.meshid == NULL || scan.meshconf == NULL) { 1365 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1366 wh, "beacon", "%s", "not a mesh sta"); 1367 vap->iv_stats.is_mesh_wrongmesh++; 1368 return; 1369 } 1370 /* 1371 * Ignore STAs for other mesh networks. 1372 */ 1373 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1374 mesh_verify_meshconf(vap, scan.meshconf)) { 1375 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1376 wh, "beacon", "%s", "not for our mesh"); 1377 vap->iv_stats.is_mesh_wrongmesh++; 1378 return; 1379 } 1380 /* 1381 * Peer only based on the current ACL policy. 1382 */ 1383 if (vap->iv_acl != NULL && 1384 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1385 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1386 wh, NULL, "%s", "disallowed by ACL"); 1387 vap->iv_stats.is_rx_acl++; 1388 return; 1389 } 1390 /* 1391 * Do neighbor discovery. 1392 */ 1393 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1394 /* 1395 * Create a new entry in the neighbor table. 1396 */ 1397 ni = ieee80211_add_neighbor(vap, wh, &scan); 1398 } 1399 /* 1400 * Automatically peer with discovered nodes if possible. 1401 * XXX backoff on repeated failure 1402 */ 1403 if (ni != vap->iv_bss && 1404 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1405 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1406 uint16_t args[1]; 1407 1408 ni->ni_mlpid = mesh_generateid(vap); 1409 if (ni->ni_mlpid == 0) 1410 return; 1411 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1412 args[0] = ni->ni_mlpid; 1413 ieee80211_send_action(ni, 1414 IEEE80211_ACTION_CAT_MESHPEERING, 1415 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1416 ni->ni_mlrcnt = 0; 1417 mesh_peer_timeout_setup(ni); 1418 } 1419 break; 1420 } 1421 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1422 { 1423 uint8_t *ssid, *meshid, *rates, *xrates; 1424 uint8_t *sfrm; 1425 1426 if (vap->iv_state != IEEE80211_S_RUN) { 1427 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1428 wh, NULL, "wrong state %s", 1429 ieee80211_state_name[vap->iv_state]); 1430 vap->iv_stats.is_rx_mgtdiscard++; 1431 return; 1432 } 1433 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1434 /* frame must be directed */ 1435 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1436 wh, NULL, "%s", "not unicast"); 1437 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1438 return; 1439 } 1440 /* 1441 * prreq frame format 1442 * [tlv] ssid 1443 * [tlv] supported rates 1444 * [tlv] extended supported rates 1445 * [tlv] mesh id 1446 */ 1447 ssid = meshid = rates = xrates = NULL; 1448 sfrm = frm; 1449 while (efrm - frm > 1) { 1450 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1451 switch (*frm) { 1452 case IEEE80211_ELEMID_SSID: 1453 ssid = frm; 1454 break; 1455 case IEEE80211_ELEMID_RATES: 1456 rates = frm; 1457 break; 1458 case IEEE80211_ELEMID_XRATES: 1459 xrates = frm; 1460 break; 1461 case IEEE80211_ELEMID_MESHID: 1462 meshid = frm; 1463 break; 1464 } 1465 frm += frm[2] + 2; 1466 } 1467 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1468 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1469 if (xrates != NULL) 1470 IEEE80211_VERIFY_ELEMENT(xrates, 1471 IEEE80211_RATE_MAXSIZE - rates[1], return); 1472 if (meshid != NULL) { 1473 IEEE80211_VERIFY_ELEMENT(meshid, 1474 IEEE80211_MESHID_LEN, return); 1475 /* NB: meshid, not ssid */ 1476 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1477 } 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 */ 1543 static const struct ieee80211_meshpeer_ie * 1544 mesh_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, uint8_t subtype) 1548 { 1549 struct ieee80211vap *vap = ni->ni_vap; 1550 const struct ieee80211_meshpeer_ie *mpie; 1551 const uint8_t *meshid, *meshconf, *meshpeer; 1552 1553 meshid = meshconf = 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_MESHID: 1558 meshid = frm; 1559 break; 1560 case IEEE80211_ELEMID_MESHCONF: 1561 meshconf = frm; 1562 break; 1563 case IEEE80211_ELEMID_MESHPEER: 1564 meshpeer = frm; 1565 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1566 memset(mp, 0, sizeof(*mp)); 1567 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1568 /* NB: peer link ID is optional on these frames */ 1569 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1570 mpie->peer_len == 8) { 1571 mp->peer_linkid = 0; 1572 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1573 } else { 1574 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1575 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1576 } 1577 break; 1578 } 1579 frm += frm[1] + 2; 1580 } 1581 1582 /* 1583 * Verify the contents of the frame. Action frames with 1584 * close subtype don't have a Mesh Configuration IE. 1585 * If if fails validation, close the peer link. 1586 */ 1587 KASSERT(meshpeer != NULL && 1588 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1589 ("parsing close action")); 1590 1591 if (mesh_verify_meshid(vap, meshid) || 1592 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1593 mesh_verify_meshconf(vap, meshconf)) { 1594 uint16_t args[3]; 1595 1596 IEEE80211_DISCARD(vap, 1597 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1598 wh, NULL, "%s", "not for our mesh"); 1599 vap->iv_stats.is_rx_mgtdiscard++; 1600 switch (ni->ni_mlstate) { 1601 case IEEE80211_NODE_MESH_IDLE: 1602 case IEEE80211_NODE_MESH_ESTABLISHED: 1603 case IEEE80211_NODE_MESH_HOLDING: 1604 /* ignore */ 1605 break; 1606 case IEEE80211_NODE_MESH_OPENSNT: 1607 case IEEE80211_NODE_MESH_OPENRCV: 1608 case IEEE80211_NODE_MESH_CONFIRMRCV: 1609 args[0] = ni->ni_mlpid; 1610 args[1] = ni->ni_mllid; 1611 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1612 ieee80211_send_action(ni, 1613 IEEE80211_ACTION_CAT_MESHPEERING, 1614 IEEE80211_ACTION_MESHPEERING_CLOSE, 1615 args); 1616 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1617 mesh_peer_timeout_setup(ni); 1618 break; 1619 } 1620 return NULL; 1621 } 1622 return (const struct ieee80211_meshpeer_ie *) mp; 1623 } 1624 1625 static int 1626 mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1627 const struct ieee80211_frame *wh, 1628 const uint8_t *frm, const uint8_t *efrm) 1629 { 1630 struct ieee80211vap *vap = ni->ni_vap; 1631 struct ieee80211_meshpeer_ie ie; 1632 const struct ieee80211_meshpeer_ie *meshpeer; 1633 uint16_t args[3]; 1634 1635 /* +2+2 for action + code + capabilites */ 1636 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1637 IEEE80211_ACTION_MESHPEERING_OPEN); 1638 if (meshpeer == NULL) { 1639 return 0; 1640 } 1641 1642 /* XXX move up */ 1643 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1644 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1645 1646 switch (ni->ni_mlstate) { 1647 case IEEE80211_NODE_MESH_IDLE: 1648 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1649 ni->ni_mllid = meshpeer->peer_llinkid; 1650 ni->ni_mlpid = mesh_generateid(vap); 1651 if (ni->ni_mlpid == 0) 1652 return 0; /* XXX */ 1653 args[0] = ni->ni_mlpid; 1654 /* Announce we're open too... */ 1655 ieee80211_send_action(ni, 1656 IEEE80211_ACTION_CAT_MESHPEERING, 1657 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1658 /* ...and confirm the link. */ 1659 args[0] = ni->ni_mlpid; 1660 args[1] = ni->ni_mllid; 1661 ieee80211_send_action(ni, 1662 IEEE80211_ACTION_CAT_MESHPEERING, 1663 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1664 args); 1665 mesh_peer_timeout_setup(ni); 1666 break; 1667 case IEEE80211_NODE_MESH_OPENRCV: 1668 /* Wrong Link ID */ 1669 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1670 args[0] = ni->ni_mllid; 1671 args[1] = ni->ni_mlpid; 1672 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1673 ieee80211_send_action(ni, 1674 IEEE80211_ACTION_CAT_MESHPEERING, 1675 IEEE80211_ACTION_MESHPEERING_CLOSE, 1676 args); 1677 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1678 mesh_peer_timeout_setup(ni); 1679 break; 1680 } 1681 /* Duplicate open, confirm again. */ 1682 args[0] = ni->ni_mlpid; 1683 args[1] = ni->ni_mllid; 1684 ieee80211_send_action(ni, 1685 IEEE80211_ACTION_CAT_MESHPEERING, 1686 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1687 args); 1688 break; 1689 case IEEE80211_NODE_MESH_OPENSNT: 1690 ni->ni_mllid = meshpeer->peer_llinkid; 1691 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1692 args[0] = ni->ni_mlpid; 1693 args[1] = ni->ni_mllid; 1694 ieee80211_send_action(ni, 1695 IEEE80211_ACTION_CAT_MESHPEERING, 1696 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1697 args); 1698 /* NB: don't setup/clear any timeout */ 1699 break; 1700 case IEEE80211_NODE_MESH_CONFIRMRCV: 1701 if (ni->ni_mlpid != meshpeer->peer_linkid || 1702 ni->ni_mllid != meshpeer->peer_llinkid) { 1703 args[0] = ni->ni_mlpid; 1704 args[1] = ni->ni_mllid; 1705 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1706 ieee80211_send_action(ni, 1707 IEEE80211_ACTION_CAT_MESHPEERING, 1708 IEEE80211_ACTION_MESHPEERING_CLOSE, 1709 args); 1710 mesh_linkchange(ni, 1711 IEEE80211_NODE_MESH_HOLDING); 1712 mesh_peer_timeout_setup(ni); 1713 break; 1714 } 1715 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1716 ni->ni_mllid = meshpeer->peer_llinkid; 1717 args[0] = ni->ni_mlpid; 1718 args[1] = ni->ni_mllid; 1719 ieee80211_send_action(ni, 1720 IEEE80211_ACTION_CAT_MESHPEERING, 1721 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1722 args); 1723 mesh_peer_timeout_stop(ni); 1724 break; 1725 case IEEE80211_NODE_MESH_ESTABLISHED: 1726 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1727 args[0] = ni->ni_mllid; 1728 args[1] = ni->ni_mlpid; 1729 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1730 ieee80211_send_action(ni, 1731 IEEE80211_ACTION_CAT_MESHPEERING, 1732 IEEE80211_ACTION_MESHPEERING_CLOSE, 1733 args); 1734 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1735 mesh_peer_timeout_setup(ni); 1736 break; 1737 } 1738 args[0] = ni->ni_mlpid; 1739 args[1] = ni->ni_mllid; 1740 ieee80211_send_action(ni, 1741 IEEE80211_ACTION_CAT_MESHPEERING, 1742 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1743 args); 1744 break; 1745 case IEEE80211_NODE_MESH_HOLDING: 1746 args[0] = ni->ni_mlpid; 1747 args[1] = meshpeer->peer_llinkid; 1748 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1749 ieee80211_send_action(ni, 1750 IEEE80211_ACTION_CAT_MESHPEERING, 1751 IEEE80211_ACTION_MESHPEERING_CLOSE, 1752 args); 1753 break; 1754 } 1755 return 0; 1756 } 1757 1758 static int 1759 mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1760 const struct ieee80211_frame *wh, 1761 const uint8_t *frm, const uint8_t *efrm) 1762 { 1763 struct ieee80211vap *vap = ni->ni_vap; 1764 struct ieee80211_meshpeer_ie ie; 1765 const struct ieee80211_meshpeer_ie *meshpeer; 1766 uint16_t args[3]; 1767 1768 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1769 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1770 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1771 if (meshpeer == NULL) { 1772 return 0; 1773 } 1774 1775 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1776 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1777 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1778 1779 switch (ni->ni_mlstate) { 1780 case IEEE80211_NODE_MESH_OPENRCV: 1781 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1782 mesh_peer_timeout_stop(ni); 1783 break; 1784 case IEEE80211_NODE_MESH_OPENSNT: 1785 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1786 break; 1787 case IEEE80211_NODE_MESH_HOLDING: 1788 args[0] = ni->ni_mlpid; 1789 args[1] = meshpeer->peer_llinkid; 1790 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1791 ieee80211_send_action(ni, 1792 IEEE80211_ACTION_CAT_MESHPEERING, 1793 IEEE80211_ACTION_MESHPEERING_CLOSE, 1794 args); 1795 break; 1796 case IEEE80211_NODE_MESH_CONFIRMRCV: 1797 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1798 args[0] = ni->ni_mlpid; 1799 args[1] = ni->ni_mllid; 1800 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1801 ieee80211_send_action(ni, 1802 IEEE80211_ACTION_CAT_MESHPEERING, 1803 IEEE80211_ACTION_MESHPEERING_CLOSE, 1804 args); 1805 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1806 mesh_peer_timeout_setup(ni); 1807 } 1808 break; 1809 default: 1810 IEEE80211_DISCARD(vap, 1811 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1812 wh, NULL, "received confirm in invalid state %d", 1813 ni->ni_mlstate); 1814 vap->iv_stats.is_rx_mgtdiscard++; 1815 break; 1816 } 1817 return 0; 1818 } 1819 1820 static int 1821 mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1822 const struct ieee80211_frame *wh, 1823 const uint8_t *frm, const uint8_t *efrm) 1824 { 1825 uint16_t args[3]; 1826 1827 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1828 ni, "%s", "recv PEER CLOSE"); 1829 1830 switch (ni->ni_mlstate) { 1831 case IEEE80211_NODE_MESH_IDLE: 1832 /* ignore */ 1833 break; 1834 case IEEE80211_NODE_MESH_OPENRCV: 1835 case IEEE80211_NODE_MESH_OPENSNT: 1836 case IEEE80211_NODE_MESH_CONFIRMRCV: 1837 case IEEE80211_NODE_MESH_ESTABLISHED: 1838 args[0] = ni->ni_mlpid; 1839 args[1] = ni->ni_mllid; 1840 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1841 ieee80211_send_action(ni, 1842 IEEE80211_ACTION_CAT_MESHPEERING, 1843 IEEE80211_ACTION_MESHPEERING_CLOSE, 1844 args); 1845 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1846 mesh_peer_timeout_setup(ni); 1847 break; 1848 case IEEE80211_NODE_MESH_HOLDING: 1849 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1850 mesh_peer_timeout_setup(ni); 1851 break; 1852 } 1853 return 0; 1854 } 1855 1856 /* 1857 * Link Metric handling. 1858 */ 1859 static int 1860 mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1861 const struct ieee80211_frame *wh, 1862 const uint8_t *frm, const uint8_t *efrm) 1863 { 1864 uint32_t metric; 1865 1866 metric = mesh_airtime_calc(ni); 1867 ieee80211_send_action(ni, 1868 IEEE80211_ACTION_CAT_MESHLMETRIC, 1869 IEEE80211_ACTION_MESHLMETRIC_REP, 1870 &metric); 1871 return 0; 1872 } 1873 1874 static int 1875 mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1876 const struct ieee80211_frame *wh, 1877 const uint8_t *frm, const uint8_t *efrm) 1878 { 1879 return 0; 1880 } 1881 1882 static int 1883 mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1884 { 1885 struct ieee80211_bpf_params params; 1886 1887 memset(¶ms, 0, sizeof(params)); 1888 params.ibp_pri = WME_AC_VO; 1889 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1890 /* XXX ucast/mcast */ 1891 params.ibp_try0 = ni->ni_txparms->maxretry; 1892 params.ibp_power = ni->ni_txpower; 1893 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1894 ¶ms); 1895 } 1896 1897 #define ADDSHORT(frm, v) do { \ 1898 frm[0] = (v) & 0xff; \ 1899 frm[1] = (v) >> 8; \ 1900 frm += 2; \ 1901 } while (0) 1902 #define ADDWORD(frm, v) do { \ 1903 frm[0] = (v) & 0xff; \ 1904 frm[1] = ((v) >> 8) & 0xff; \ 1905 frm[2] = ((v) >> 16) & 0xff; \ 1906 frm[3] = ((v) >> 24) & 0xff; \ 1907 frm += 4; \ 1908 } while (0) 1909 1910 static int 1911 mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1912 int category, int action, void *args0) 1913 { 1914 struct ieee80211vap *vap = ni->ni_vap; 1915 struct ieee80211com *ic = ni->ni_ic; 1916 uint16_t *args = args0; 1917 const struct ieee80211_rateset *rs; 1918 struct mbuf *m; 1919 uint8_t *frm; 1920 1921 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1922 "send PEER OPEN action: localid 0x%x", args[0]); 1923 1924 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1925 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 1926 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 1927 ieee80211_ref_node(ni); 1928 1929 m = ieee80211_getmgtframe(&frm, 1930 ic->ic_headroom + sizeof(struct ieee80211_frame), 1931 sizeof(uint16_t) /* action+category */ 1932 + sizeof(uint16_t) /* capabilites */ 1933 + 2 + IEEE80211_RATE_SIZE 1934 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1935 + 2 + IEEE80211_MESHID_LEN 1936 + sizeof(struct ieee80211_meshconf_ie) 1937 + sizeof(struct ieee80211_meshpeer_ie) 1938 ); 1939 if (m != NULL) { 1940 /* 1941 * mesh peer open action frame format: 1942 * [1] category 1943 * [1] action 1944 * [2] capabilities 1945 * [tlv] rates 1946 * [tlv] xrates 1947 * [tlv] mesh id 1948 * [tlv] mesh conf 1949 * [tlv] mesh peer link mgmt 1950 */ 1951 *frm++ = category; 1952 *frm++ = action; 1953 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1954 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1955 frm = ieee80211_add_rates(frm, rs); 1956 frm = ieee80211_add_xrates(frm, rs); 1957 frm = ieee80211_add_meshid(frm, vap); 1958 frm = ieee80211_add_meshconf(frm, vap); 1959 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1960 args[0], 0, 0); 1961 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1962 return mesh_send_action(ni, m); 1963 } else { 1964 vap->iv_stats.is_tx_nobuf++; 1965 ieee80211_free_node(ni); 1966 return ENOMEM; 1967 } 1968 } 1969 1970 static int 1971 mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1972 int category, int action, void *args0) 1973 { 1974 struct ieee80211vap *vap = ni->ni_vap; 1975 struct ieee80211com *ic = ni->ni_ic; 1976 uint16_t *args = args0; 1977 const struct ieee80211_rateset *rs; 1978 struct mbuf *m; 1979 uint8_t *frm; 1980 1981 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1982 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1983 args[0], args[1]); 1984 1985 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1986 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 1987 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 1988 ieee80211_ref_node(ni); 1989 1990 m = ieee80211_getmgtframe(&frm, 1991 ic->ic_headroom + sizeof(struct ieee80211_frame), 1992 sizeof(uint16_t) /* action+category */ 1993 + sizeof(uint16_t) /* capabilites */ 1994 + sizeof(uint16_t) /* status code */ 1995 + sizeof(uint16_t) /* AID */ 1996 + 2 + IEEE80211_RATE_SIZE 1997 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1998 + 2 + IEEE80211_MESHID_LEN 1999 + sizeof(struct ieee80211_meshconf_ie) 2000 + sizeof(struct ieee80211_meshpeer_ie) 2001 ); 2002 if (m != NULL) { 2003 /* 2004 * mesh peer confirm action frame format: 2005 * [1] category 2006 * [1] action 2007 * [2] capabilities 2008 * [2] status code 2009 * [2] association id (peer ID) 2010 * [tlv] rates 2011 * [tlv] xrates 2012 * [tlv] mesh id 2013 * [tlv] mesh conf 2014 * [tlv] mesh peer link mgmt 2015 */ 2016 *frm++ = category; 2017 *frm++ = action; 2018 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2019 ADDSHORT(frm, 0); /* status code */ 2020 ADDSHORT(frm, args[1]); /* AID */ 2021 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2022 frm = ieee80211_add_rates(frm, rs); 2023 frm = ieee80211_add_xrates(frm, rs); 2024 frm = ieee80211_add_meshid(frm, vap); 2025 frm = ieee80211_add_meshconf(frm, vap); 2026 frm = ieee80211_add_meshpeer(frm, 2027 IEEE80211_MESH_PEER_LINK_CONFIRM, 2028 args[0], args[1], 0); 2029 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2030 return mesh_send_action(ni, m); 2031 } else { 2032 vap->iv_stats.is_tx_nobuf++; 2033 ieee80211_free_node(ni); 2034 return ENOMEM; 2035 } 2036 } 2037 2038 static int 2039 mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2040 int category, int action, void *args0) 2041 { 2042 struct ieee80211vap *vap = ni->ni_vap; 2043 struct ieee80211com *ic = ni->ni_ic; 2044 uint16_t *args = args0; 2045 struct mbuf *m; 2046 uint8_t *frm; 2047 2048 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2049 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2050 args[0], args[1], args[2]); 2051 2052 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2053 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2054 ni, ni->ni_macaddr, ieee80211_node_refcnt(ni)+1); 2055 ieee80211_ref_node(ni); 2056 2057 m = ieee80211_getmgtframe(&frm, 2058 ic->ic_headroom + sizeof(struct ieee80211_frame), 2059 sizeof(uint16_t) /* action+category */ 2060 + sizeof(uint16_t) /* reason code */ 2061 + 2 + IEEE80211_MESHID_LEN 2062 + sizeof(struct ieee80211_meshpeer_ie) 2063 ); 2064 if (m != NULL) { 2065 /* 2066 * mesh peer close action frame format: 2067 * [1] category 2068 * [1] action 2069 * [2] reason code 2070 * [tlv] mesh id 2071 * [tlv] mesh peer link mgmt 2072 */ 2073 *frm++ = category; 2074 *frm++ = action; 2075 ADDSHORT(frm, args[2]); /* reason code */ 2076 frm = ieee80211_add_meshid(frm, vap); 2077 frm = ieee80211_add_meshpeer(frm, 2078 IEEE80211_MESH_PEER_LINK_CLOSE, 2079 args[0], args[1], args[2]); 2080 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2081 return mesh_send_action(ni, m); 2082 } else { 2083 vap->iv_stats.is_tx_nobuf++; 2084 ieee80211_free_node(ni); 2085 return ENOMEM; 2086 } 2087 } 2088 2089 static int 2090 mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2091 int category, int action, void *arg0) 2092 { 2093 struct ieee80211vap *vap = ni->ni_vap; 2094 struct ieee80211com *ic = ni->ni_ic; 2095 struct mbuf *m; 2096 uint8_t *frm; 2097 2098 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2099 "%s", "send LINK METRIC REQUEST action"); 2100 2101 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2102 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2103 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2104 ieee80211_ref_node(ni); 2105 2106 m = ieee80211_getmgtframe(&frm, 2107 ic->ic_headroom + sizeof(struct ieee80211_frame), 2108 sizeof(uint16_t) /* action+category */ 2109 ); 2110 if (m != NULL) { 2111 /* 2112 * mesh link metric request 2113 * [1] category 2114 * [1] action 2115 */ 2116 *frm++ = category; 2117 *frm++ = action; 2118 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2119 return mesh_send_action(ni, m); 2120 } else { 2121 vap->iv_stats.is_tx_nobuf++; 2122 ieee80211_free_node(ni); 2123 return ENOMEM; 2124 } 2125 } 2126 2127 static int 2128 mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2129 int category, int action, void *args0) 2130 { 2131 struct ieee80211vap *vap = ni->ni_vap; 2132 struct ieee80211com *ic = ni->ni_ic; 2133 uint32_t *metric = args0; 2134 struct mbuf *m; 2135 uint8_t *frm; 2136 2137 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2138 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2139 2140 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2141 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2142 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2143 ieee80211_ref_node(ni); 2144 2145 m = ieee80211_getmgtframe(&frm, 2146 ic->ic_headroom + sizeof(struct ieee80211_frame), 2147 sizeof(uint16_t) /* action+category */ 2148 + sizeof(struct ieee80211_meshlmetric_ie) 2149 ); 2150 if (m != NULL) { 2151 /* 2152 * mesh link metric reply 2153 * [1] category 2154 * [1] action 2155 * [tlv] mesh link metric 2156 */ 2157 *frm++ = category; 2158 *frm++ = action; 2159 frm = ieee80211_add_meshlmetric(frm, *metric); 2160 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2161 return mesh_send_action(ni, m); 2162 } else { 2163 vap->iv_stats.is_tx_nobuf++; 2164 ieee80211_free_node(ni); 2165 return ENOMEM; 2166 } 2167 } 2168 2169 static void 2170 mesh_peer_timeout_setup(struct ieee80211_node *ni) 2171 { 2172 switch (ni->ni_mlstate) { 2173 case IEEE80211_NODE_MESH_HOLDING: 2174 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2175 break; 2176 case IEEE80211_NODE_MESH_CONFIRMRCV: 2177 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2178 break; 2179 case IEEE80211_NODE_MESH_IDLE: 2180 ni->ni_mltval = 0; 2181 break; 2182 default: 2183 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2184 break; 2185 } 2186 if (ni->ni_mltval) 2187 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2188 mesh_peer_timeout_cb, ni); 2189 } 2190 2191 /* 2192 * Same as above but backoffs timer statisically 50%. 2193 */ 2194 static void 2195 mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2196 { 2197 uint32_t r; 2198 2199 r = karc4random(); 2200 ni->ni_mltval += r % ni->ni_mltval; 2201 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2202 ni); 2203 } 2204 2205 static __inline void 2206 mesh_peer_timeout_stop(struct ieee80211_node *ni) 2207 { 2208 callout_stop(&ni->ni_mltimer); 2209 } 2210 2211 /* 2212 * Mesh Peer Link Management FSM timeout handling. 2213 */ 2214 static void 2215 mesh_peer_timeout_cb(void *arg) 2216 { 2217 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2218 uint16_t args[3]; 2219 2220 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2221 ni, "mesh link timeout, state %d, retry counter %d", 2222 ni->ni_mlstate, ni->ni_mlrcnt); 2223 2224 switch (ni->ni_mlstate) { 2225 case IEEE80211_NODE_MESH_IDLE: 2226 case IEEE80211_NODE_MESH_ESTABLISHED: 2227 break; 2228 case IEEE80211_NODE_MESH_OPENSNT: 2229 case IEEE80211_NODE_MESH_OPENRCV: 2230 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2231 args[0] = ni->ni_mlpid; 2232 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2233 ieee80211_send_action(ni, 2234 IEEE80211_ACTION_CAT_MESHPEERING, 2235 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2236 ni->ni_mlrcnt = 0; 2237 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2238 mesh_peer_timeout_setup(ni); 2239 } else { 2240 args[0] = ni->ni_mlpid; 2241 ieee80211_send_action(ni, 2242 IEEE80211_ACTION_CAT_MESHPEERING, 2243 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2244 ni->ni_mlrcnt++; 2245 mesh_peer_timeout_backoff(ni); 2246 } 2247 break; 2248 case IEEE80211_NODE_MESH_CONFIRMRCV: 2249 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2250 args[0] = ni->ni_mlpid; 2251 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2252 ieee80211_send_action(ni, 2253 IEEE80211_ACTION_CAT_MESHPEERING, 2254 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2255 ni->ni_mlrcnt = 0; 2256 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2257 mesh_peer_timeout_setup(ni); 2258 } else { 2259 ni->ni_mlrcnt++; 2260 mesh_peer_timeout_setup(ni); 2261 } 2262 break; 2263 case IEEE80211_NODE_MESH_HOLDING: 2264 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2265 break; 2266 } 2267 } 2268 2269 static int 2270 mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2271 { 2272 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2273 2274 if (ie == NULL || ie[1] != ms->ms_idlen) 2275 return 1; 2276 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2277 } 2278 2279 /* 2280 * Check if we are using the same algorithms for this mesh. 2281 */ 2282 static int 2283 mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2284 { 2285 const struct ieee80211_meshconf_ie *meshconf = 2286 (const struct ieee80211_meshconf_ie *) ie; 2287 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2288 uint16_t cap; 2289 2290 if (meshconf == NULL) 2291 return 1; 2292 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2293 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2294 "unknown path selection algorithm: 0x%x\n", 2295 meshconf->conf_pselid); 2296 return 1; 2297 } 2298 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2299 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2300 "unknown path metric algorithm: 0x%x\n", 2301 meshconf->conf_pmetid); 2302 return 1; 2303 } 2304 if (meshconf->conf_ccid != 0) { 2305 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2306 "unknown congestion control algorithm: 0x%x\n", 2307 meshconf->conf_ccid); 2308 return 1; 2309 } 2310 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2311 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2312 "unknown sync algorithm: 0x%x\n", 2313 meshconf->conf_syncid); 2314 return 1; 2315 } 2316 if (meshconf->conf_authid != 0) { 2317 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2318 "unknown auth auth algorithm: 0x%x\n", 2319 meshconf->conf_pselid); 2320 return 1; 2321 } 2322 /* NB: conf_cap is only read correctly here */ 2323 cap = LE_READ_2(&meshconf->conf_cap); 2324 /* Not accepting peers */ 2325 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) { 2326 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2327 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2328 return 1; 2329 } 2330 return 0; 2331 } 2332 2333 static int 2334 mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2335 const uint8_t *ie) 2336 { 2337 const struct ieee80211_meshpeer_ie *meshpeer = 2338 (const struct ieee80211_meshpeer_ie *) ie; 2339 2340 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2341 meshpeer->peer_len > 10) 2342 return 1; 2343 switch (subtype) { 2344 case IEEE80211_MESH_PEER_LINK_OPEN: 2345 if (meshpeer->peer_len != 6) 2346 return 1; 2347 break; 2348 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2349 if (meshpeer->peer_len != 8) 2350 return 1; 2351 break; 2352 case IEEE80211_MESH_PEER_LINK_CLOSE: 2353 if (meshpeer->peer_len < 8) 2354 return 1; 2355 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2356 return 1; 2357 if (meshpeer->peer_rcode == 0) 2358 return 1; 2359 break; 2360 } 2361 return 0; 2362 } 2363 2364 /* 2365 * Add a Mesh ID IE to a frame. 2366 */ 2367 uint8_t * 2368 ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2369 { 2370 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2371 2372 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2373 2374 *frm++ = IEEE80211_ELEMID_MESHID; 2375 *frm++ = ms->ms_idlen; 2376 memcpy(frm, ms->ms_id, ms->ms_idlen); 2377 return frm + ms->ms_idlen; 2378 } 2379 2380 /* 2381 * Add a Mesh Configuration IE to a frame. 2382 * For now just use HWMP routing, Airtime link metric, Null Congestion 2383 * Signaling, Null Sync Protocol and Null Authentication. 2384 */ 2385 uint8_t * 2386 ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2387 { 2388 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2389 uint16_t caps; 2390 2391 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2392 2393 *frm++ = IEEE80211_ELEMID_MESHCONF; 2394 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2395 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2396 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2397 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2398 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2399 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2400 /* NB: set the number of neighbors before the rest */ 2401 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2402 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2403 *frm |= IEEE80211_MESHCONF_FORM_MP; 2404 frm += 1; 2405 caps = 0; 2406 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2407 caps |= IEEE80211_MESHCONF_CAP_AP; 2408 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2409 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2410 ADDSHORT(frm, caps); 2411 return frm; 2412 } 2413 2414 /* 2415 * Add a Mesh Peer Management IE to a frame. 2416 */ 2417 uint8_t * 2418 ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2419 uint16_t peerid, uint16_t reason) 2420 { 2421 /* XXX change for AH */ 2422 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2423 2424 KASSERT(localid != 0, ("localid == 0")); 2425 2426 *frm++ = IEEE80211_ELEMID_MESHPEER; 2427 switch (subtype) { 2428 case IEEE80211_MESH_PEER_LINK_OPEN: 2429 *frm++ = 6; /* length */ 2430 memcpy(frm, meshpeerproto, 4); 2431 frm += 4; 2432 ADDSHORT(frm, localid); /* local ID */ 2433 break; 2434 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2435 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2436 *frm++ = 8; /* length */ 2437 memcpy(frm, meshpeerproto, 4); 2438 frm += 4; 2439 ADDSHORT(frm, localid); /* local ID */ 2440 ADDSHORT(frm, peerid); /* peer ID */ 2441 break; 2442 case IEEE80211_MESH_PEER_LINK_CLOSE: 2443 if (peerid) 2444 *frm++ = 10; /* length */ 2445 else 2446 *frm++ = 8; /* length */ 2447 memcpy(frm, meshpeerproto, 4); 2448 frm += 4; 2449 ADDSHORT(frm, localid); /* local ID */ 2450 if (peerid) 2451 ADDSHORT(frm, peerid); /* peer ID */ 2452 ADDSHORT(frm, reason); 2453 break; 2454 } 2455 return frm; 2456 } 2457 2458 /* 2459 * Compute an Airtime Link Metric for the link with this node. 2460 * 2461 * Based on Draft 3.0 spec (11B.10, p.149). 2462 */ 2463 /* 2464 * Max 802.11s overhead. 2465 */ 2466 #define IEEE80211_MESH_MAXOVERHEAD \ 2467 (sizeof(struct ieee80211_qosframe_addr4) \ 2468 + sizeof(struct ieee80211_meshcntl_ae11) \ 2469 + sizeof(struct llc) \ 2470 + IEEE80211_ADDR_LEN \ 2471 + IEEE80211_WEP_IVLEN \ 2472 + IEEE80211_WEP_KIDLEN \ 2473 + IEEE80211_WEP_CRCLEN \ 2474 + IEEE80211_WEP_MICLEN \ 2475 + IEEE80211_CRC_LEN) 2476 uint32_t 2477 mesh_airtime_calc(struct ieee80211_node *ni) 2478 { 2479 #define M_BITS 8 2480 #define S_FACTOR (2 * M_BITS) 2481 struct ieee80211com *ic = ni->ni_ic; 2482 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2483 const static int nbits = 8192 << M_BITS; 2484 uint32_t overhead, rate, errrate; 2485 uint64_t res; 2486 2487 /* Time to transmit a frame */ 2488 rate = ni->ni_txrate; 2489 overhead = ieee80211_compute_duration(ic->ic_rt, 2490 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2491 /* Error rate in percentage */ 2492 /* XXX assuming small failures are ok */ 2493 errrate = (((ifp->if_oerrors + 2494 ifp->if_ierrors) / 100) << M_BITS) / 100; 2495 res = (overhead + (nbits / rate)) * 2496 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2497 2498 return (uint32_t)(res >> S_FACTOR); 2499 #undef M_BITS 2500 #undef S_FACTOR 2501 } 2502 2503 /* 2504 * Add a Mesh Link Metric report IE to a frame. 2505 */ 2506 uint8_t * 2507 ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2508 { 2509 *frm++ = IEEE80211_ELEMID_MESHLINK; 2510 *frm++ = 4; 2511 ADDWORD(frm, metric); 2512 return frm; 2513 } 2514 #undef ADDSHORT 2515 #undef ADDWORD 2516 2517 /* 2518 * Initialize any mesh-specific node state. 2519 */ 2520 void 2521 ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2522 { 2523 ni->ni_flags |= IEEE80211_NODE_QOS; 2524 callout_init_mp(&ni->ni_mltimer); 2525 } 2526 2527 /* 2528 * Cleanup any mesh-specific node state. 2529 */ 2530 void 2531 ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2532 { 2533 struct ieee80211vap *vap = ni->ni_vap; 2534 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2535 2536 callout_stop(&ni->ni_mltimer); 2537 /* NB: short-circuit callbacks after mesh_vdetach */ 2538 if (vap->iv_mesh != NULL) 2539 ms->ms_ppath->mpp_peerdown(ni); 2540 } 2541 2542 void 2543 ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2544 { 2545 ni->ni_meshidlen = ie[1]; 2546 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2547 } 2548 2549 /* 2550 * Setup mesh-specific node state on neighbor discovery. 2551 */ 2552 void 2553 ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2554 const struct ieee80211_frame *wh, 2555 const struct ieee80211_scanparams *sp) 2556 { 2557 ieee80211_parse_meshid(ni, sp->meshid); 2558 } 2559 2560 void 2561 ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2562 struct ieee80211_beacon_offsets *bo) 2563 { 2564 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2565 2566 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2567 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2568 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2569 } 2570 } 2571 2572 static int 2573 mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2574 { 2575 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2576 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2577 struct ieee80211_mesh_route *rt; 2578 struct ieee80211req_mesh_route *imr; 2579 size_t len, off; 2580 uint8_t *p; 2581 int error; 2582 2583 if (vap->iv_opmode != IEEE80211_M_MBSS) 2584 return ENOSYS; 2585 2586 error = 0; 2587 switch (ireq->i_type) { 2588 case IEEE80211_IOC_MESH_ID: 2589 ireq->i_len = ms->ms_idlen; 2590 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2591 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2592 break; 2593 case IEEE80211_IOC_MESH_AP: 2594 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2595 break; 2596 case IEEE80211_IOC_MESH_FWRD: 2597 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2598 break; 2599 case IEEE80211_IOC_MESH_TTL: 2600 ireq->i_val = ms->ms_ttl; 2601 break; 2602 case IEEE80211_IOC_MESH_RTCMD: 2603 switch (ireq->i_val) { 2604 case IEEE80211_MESH_RTCMD_LIST: 2605 len = 0; 2606 MESH_RT_LOCK(ms); 2607 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2608 len += sizeof(*imr); 2609 } 2610 MESH_RT_UNLOCK(ms); 2611 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2612 ireq->i_len = len; 2613 return ENOMEM; 2614 } 2615 ireq->i_len = len; 2616 /* XXX M_WAIT? */ 2617 p = kmalloc(len, M_TEMP, M_INTWAIT | M_ZERO); 2618 if (p == NULL) 2619 return ENOMEM; 2620 off = 0; 2621 MESH_RT_LOCK(ms); 2622 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2623 if (off >= len) 2624 break; 2625 imr = (struct ieee80211req_mesh_route *) 2626 (p + off); 2627 imr->imr_flags = rt->rt_flags; 2628 IEEE80211_ADDR_COPY(imr->imr_dest, 2629 rt->rt_dest); 2630 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2631 rt->rt_nexthop); 2632 imr->imr_metric = rt->rt_metric; 2633 imr->imr_nhops = rt->rt_nhops; 2634 imr->imr_lifetime = rt->rt_lifetime; 2635 imr->imr_lastmseq = rt->rt_lastmseq; 2636 off += sizeof(*imr); 2637 } 2638 MESH_RT_UNLOCK(ms); 2639 error = copyout(p, (uint8_t *)ireq->i_data, 2640 ireq->i_len); 2641 kfree(p, M_TEMP); 2642 break; 2643 case IEEE80211_MESH_RTCMD_FLUSH: 2644 case IEEE80211_MESH_RTCMD_ADD: 2645 case IEEE80211_MESH_RTCMD_DELETE: 2646 return EINVAL; 2647 default: 2648 return ENOSYS; 2649 } 2650 break; 2651 case IEEE80211_IOC_MESH_PR_METRIC: 2652 len = strlen(ms->ms_pmetric->mpm_descr); 2653 if (ireq->i_len < len) 2654 return EINVAL; 2655 ireq->i_len = len; 2656 error = copyout(ms->ms_pmetric->mpm_descr, 2657 (uint8_t *)ireq->i_data, len); 2658 break; 2659 case IEEE80211_IOC_MESH_PR_PATH: 2660 len = strlen(ms->ms_ppath->mpp_descr); 2661 if (ireq->i_len < len) 2662 return EINVAL; 2663 ireq->i_len = len; 2664 error = copyout(ms->ms_ppath->mpp_descr, 2665 (uint8_t *)ireq->i_data, len); 2666 break; 2667 default: 2668 return ENOSYS; 2669 } 2670 2671 return error; 2672 } 2673 IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2674 2675 static int 2676 mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2677 { 2678 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2679 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2680 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2681 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2682 int error; 2683 2684 if (vap->iv_opmode != IEEE80211_M_MBSS) 2685 return ENOSYS; 2686 2687 error = 0; 2688 switch (ireq->i_type) { 2689 case IEEE80211_IOC_MESH_ID: 2690 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2691 return EINVAL; 2692 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2693 if (error != 0) 2694 break; 2695 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2696 ms->ms_idlen = ireq->i_len; 2697 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2698 error = ENETRESET; 2699 break; 2700 case IEEE80211_IOC_MESH_AP: 2701 if (ireq->i_val) 2702 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2703 else 2704 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2705 error = ENETRESET; 2706 break; 2707 case IEEE80211_IOC_MESH_FWRD: 2708 if (ireq->i_val) 2709 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2710 else 2711 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2712 break; 2713 case IEEE80211_IOC_MESH_TTL: 2714 ms->ms_ttl = (uint8_t) ireq->i_val; 2715 break; 2716 case IEEE80211_IOC_MESH_RTCMD: 2717 switch (ireq->i_val) { 2718 case IEEE80211_MESH_RTCMD_LIST: 2719 return EINVAL; 2720 case IEEE80211_MESH_RTCMD_FLUSH: 2721 ieee80211_mesh_rt_flush(vap); 2722 break; 2723 case IEEE80211_MESH_RTCMD_ADD: 2724 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2725 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2726 return EINVAL; 2727 error = copyin(ireq->i_data, &tmpaddr, 2728 IEEE80211_ADDR_LEN); 2729 if (error == 0) 2730 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2731 break; 2732 case IEEE80211_MESH_RTCMD_DELETE: 2733 ieee80211_mesh_rt_del(vap, ireq->i_data); 2734 break; 2735 default: 2736 return ENOSYS; 2737 } 2738 break; 2739 case IEEE80211_IOC_MESH_PR_METRIC: 2740 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2741 if (error == 0) { 2742 error = mesh_select_proto_metric(vap, tmpproto); 2743 if (error == 0) 2744 error = ENETRESET; 2745 } 2746 break; 2747 case IEEE80211_IOC_MESH_PR_PATH: 2748 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2749 if (error == 0) { 2750 error = mesh_select_proto_path(vap, tmpproto); 2751 if (error == 0) 2752 error = ENETRESET; 2753 } 2754 break; 2755 default: 2756 return ENOSYS; 2757 } 2758 return error; 2759 } 2760 IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2761