1 /*- 2 * Copyright (c) 2009 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Rui Paulo under sponsorship from the 6 * FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 #include <sys/cdefs.h> 30 #ifdef __FreeBSD__ 31 __FBSDID("$FreeBSD$"); 32 #endif 33 34 /* 35 * IEEE 802.11s Mesh Point (MBSS) support. 36 * 37 * Based on March 2009, D3.0 802.11s draft spec. 38 */ 39 #include "opt_inet.h" 40 #include "opt_wlan.h" 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/mbuf.h> 45 #include <sys/malloc.h> 46 #include <sys/kernel.h> 47 48 #include <sys/socket.h> 49 #include <sys/sockio.h> 50 #include <sys/endian.h> 51 #include <sys/errno.h> 52 #include <sys/proc.h> 53 #include <sys/sysctl.h> 54 55 #include <net/if.h> 56 #include <net/if_media.h> 57 #include <net/if_llc.h> 58 #include <net/ethernet.h> 59 60 #include <net80211/ieee80211_var.h> 61 #include <net80211/ieee80211_action.h> 62 #include <net80211/ieee80211_input.h> 63 #include <net80211/ieee80211_mesh.h> 64 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_recv_ctl(struct ieee80211_node *, struct mbuf *, int); 86 static void mesh_peer_timeout_setup(struct ieee80211_node *); 87 static void mesh_peer_timeout_backoff(struct ieee80211_node *); 88 static void mesh_peer_timeout_cb(void *); 89 static __inline void 90 mesh_peer_timeout_stop(struct ieee80211_node *); 91 static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 92 static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 93 static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 94 const uint8_t *); 95 uint32_t mesh_airtime_calc(struct ieee80211_node *); 96 97 /* 98 * Timeout values come from the specification and are in milliseconds. 99 */ 100 static SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 101 "IEEE 802.11s parameters"); 102 static int ieee80211_mesh_retrytimeout = -1; 103 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 104 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 105 "Retry timeout (msec)"); 106 static int ieee80211_mesh_holdingtimeout = -1; 107 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 108 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 109 "Holding state timeout (msec)"); 110 static int ieee80211_mesh_confirmtimeout = -1; 111 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 112 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 113 "Confirm state timeout (msec)"); 114 static int ieee80211_mesh_maxretries = 2; 115 SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 116 &ieee80211_mesh_maxretries, 0, 117 "Maximum retries during peer link establishment"); 118 119 static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 120 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 121 122 static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 123 static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 124 static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 125 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req; 126 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep; 127 128 static ieee80211_send_action_func mesh_send_action_meshpeering_open; 129 static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 130 static ieee80211_send_action_func mesh_send_action_meshpeering_close; 131 static ieee80211_send_action_func mesh_send_action_meshlink_request; 132 static ieee80211_send_action_func mesh_send_action_meshlink_reply; 133 134 static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 135 .mpm_descr = "AIRTIME", 136 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 137 .mpm_metric = mesh_airtime_calc, 138 }; 139 140 static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 141 static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 142 143 #define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) 144 #define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 145 #define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 146 147 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 = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 180 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 181 if (rt != NULL) { 182 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 183 rt->rt_priv = (void *)ALIGN(&rt[1]); 184 rt->rt_crtime = ticks; 185 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 186 } 187 return rt; 188 } 189 190 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 free(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_SAFE(rt, &ms->ms_routes, rt_next, next) { 284 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 285 mesh_rt_del(ms, rt); 286 MESH_RT_UNLOCK(ms); 287 return; 288 } 289 } 290 MESH_RT_UNLOCK(ms); 291 } 292 293 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_SAFE(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_SAFE(rt, &ms->ms_routes, rt_next, next) { 316 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 317 mesh_rt_del(ms, rt); 318 } 319 MESH_RT_UNLOCK(ms); 320 } 321 322 /* 323 * Flush expired routing entries, i.e. those in invalid state for 324 * some time. 325 */ 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_SAFE(rt, &ms->ms_routes, rt_next, next) { 336 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 337 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 338 mesh_rt_del(ms, rt); 339 } 340 MESH_RT_UNLOCK(ms); 341 } 342 343 #define N(a) (sizeof(a) / sizeof(a[0])) 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_drain(&ni->ni_mltimer); 496 /* XXX belongs in hwmp */ 497 ieee80211_ageq_drain_node(&ic->ic_stageq, 498 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 499 } 500 501 static void 502 mesh_vdetach(struct ieee80211vap *vap) 503 { 504 struct ieee80211_mesh_state *ms = vap->iv_mesh; 505 506 callout_drain(&ms->ms_cleantimer); 507 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 508 NULL); 509 ieee80211_mesh_rt_flush(vap); 510 mtx_destroy(&ms->ms_rt_lock); 511 ms->ms_ppath->mpp_vdetach(vap); 512 free(vap->iv_mesh, M_80211_VAP); 513 vap->iv_mesh = NULL; 514 } 515 516 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 vap->iv_recv_ctl = mesh_recv_ctl; 525 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 526 M_NOWAIT | M_ZERO); 527 if (ms == NULL) { 528 printf("%s: couldn't alloc MBSS state\n", __func__); 529 return; 530 } 531 vap->iv_mesh = ms; 532 ms->ms_seq = 0; 533 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 534 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 535 TAILQ_INIT(&ms->ms_routes); 536 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 537 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 538 mesh_select_proto_metric(vap, "AIRTIME"); 539 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 540 mesh_select_proto_path(vap, "HWMP"); 541 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 542 ms->ms_ppath->mpp_vattach(vap); 543 } 544 545 /* 546 * IEEE80211_M_MBSS vap state machine handler. 547 */ 548 static int 549 mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 550 { 551 struct ieee80211_mesh_state *ms = vap->iv_mesh; 552 struct ieee80211com *ic = vap->iv_ic; 553 struct ieee80211_node *ni; 554 enum ieee80211_state ostate; 555 556 IEEE80211_LOCK_ASSERT(ic); 557 558 ostate = vap->iv_state; 559 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 560 __func__, ieee80211_state_name[ostate], 561 ieee80211_state_name[nstate], arg); 562 vap->iv_state = nstate; /* state transition */ 563 if (ostate != IEEE80211_S_SCAN) 564 ieee80211_cancel_scan(vap); /* background scan */ 565 ni = vap->iv_bss; /* NB: no reference held */ 566 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 567 callout_drain(&ms->ms_cleantimer); 568 switch (nstate) { 569 case IEEE80211_S_INIT: 570 switch (ostate) { 571 case IEEE80211_S_SCAN: 572 ieee80211_cancel_scan(vap); 573 break; 574 case IEEE80211_S_CAC: 575 ieee80211_dfs_cac_stop(vap); 576 break; 577 case IEEE80211_S_RUN: 578 ieee80211_iterate_nodes(&ic->ic_sta, 579 mesh_vdetach_peers, NULL); 580 break; 581 default: 582 break; 583 } 584 if (ostate != IEEE80211_S_INIT) { 585 /* NB: optimize INIT -> INIT case */ 586 ieee80211_reset_bss(vap); 587 ieee80211_mesh_rt_flush(vap); 588 } 589 break; 590 case IEEE80211_S_SCAN: 591 switch (ostate) { 592 case IEEE80211_S_INIT: 593 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 594 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 595 ms->ms_idlen != 0) { 596 /* 597 * Already have a channel and a mesh ID; bypass 598 * the scan and startup immediately. 599 */ 600 ieee80211_create_ibss(vap, vap->iv_des_chan); 601 break; 602 } 603 /* 604 * Initiate a scan. We can come here as a result 605 * of an IEEE80211_IOC_SCAN_REQ too in which case 606 * the vap will be marked with IEEE80211_FEXT_SCANREQ 607 * and the scan request parameters will be present 608 * in iv_scanreq. Otherwise we do the default. 609 */ 610 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 611 ieee80211_check_scan(vap, 612 vap->iv_scanreq_flags, 613 vap->iv_scanreq_duration, 614 vap->iv_scanreq_mindwell, 615 vap->iv_scanreq_maxdwell, 616 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 617 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 618 } else 619 ieee80211_check_scan_current(vap); 620 break; 621 default: 622 break; 623 } 624 break; 625 case IEEE80211_S_CAC: 626 /* 627 * Start CAC on a DFS channel. We come here when starting 628 * a bss on a DFS channel (see ieee80211_create_ibss). 629 */ 630 ieee80211_dfs_cac_start(vap); 631 break; 632 case IEEE80211_S_RUN: 633 switch (ostate) { 634 case IEEE80211_S_INIT: 635 /* 636 * Already have a channel; bypass the 637 * scan and startup immediately. 638 * Note that ieee80211_create_ibss will call 639 * back to do a RUN->RUN state change. 640 */ 641 ieee80211_create_ibss(vap, 642 ieee80211_ht_adjust_channel(ic, 643 ic->ic_curchan, vap->iv_flags_ht)); 644 /* NB: iv_bss is changed on return */ 645 break; 646 case IEEE80211_S_CAC: 647 /* 648 * NB: This is the normal state change when CAC 649 * expires and no radar was detected; no need to 650 * clear the CAC timer as it's already expired. 651 */ 652 /* fall thru... */ 653 case IEEE80211_S_CSA: 654 #if 0 655 /* 656 * Shorten inactivity timer of associated stations 657 * to weed out sta's that don't follow a CSA. 658 */ 659 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 660 #endif 661 /* 662 * Update bss node channel to reflect where 663 * we landed after CSA. 664 */ 665 ieee80211_node_set_chan(vap->iv_bss, 666 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 667 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 668 /* XXX bypass debug msgs */ 669 break; 670 case IEEE80211_S_SCAN: 671 case IEEE80211_S_RUN: 672 #ifdef IEEE80211_DEBUG 673 if (ieee80211_msg_debug(vap)) { 674 struct ieee80211_node *ni = vap->iv_bss; 675 ieee80211_note(vap, 676 "synchronized with %s meshid ", 677 ether_sprintf(ni->ni_meshid)); 678 ieee80211_print_essid(ni->ni_meshid, 679 ni->ni_meshidlen); 680 /* XXX MCS/HT */ 681 printf(" channel %d\n", 682 ieee80211_chan2ieee(ic, ic->ic_curchan)); 683 } 684 #endif 685 break; 686 default: 687 break; 688 } 689 ieee80211_node_authorize(vap->iv_bss); 690 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 691 mesh_rt_cleanup_cb, vap); 692 break; 693 default: 694 break; 695 } 696 /* NB: ostate not nstate */ 697 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 698 return 0; 699 } 700 701 static void 702 mesh_rt_cleanup_cb(void *arg) 703 { 704 struct ieee80211vap *vap = arg; 705 struct ieee80211_mesh_state *ms = vap->iv_mesh; 706 707 mesh_rt_flush_invalid(vap); 708 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 709 mesh_rt_cleanup_cb, vap); 710 } 711 712 713 /* 714 * Helper function to note the Mesh Peer Link FSM change. 715 */ 716 static void 717 mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 718 { 719 struct ieee80211vap *vap = ni->ni_vap; 720 struct ieee80211_mesh_state *ms = vap->iv_mesh; 721 #ifdef IEEE80211_DEBUG 722 static const char *meshlinkstates[] = { 723 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 724 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 725 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 726 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 727 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 728 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 729 }; 730 #endif 731 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 732 ni, "peer link: %s -> %s", 733 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 734 735 /* track neighbor count */ 736 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 737 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 738 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 739 ms->ms_neighbors++; 740 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 741 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 742 state != IEEE80211_NODE_MESH_ESTABLISHED) { 743 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 744 ms->ms_neighbors--; 745 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 746 } 747 ni->ni_mlstate = state; 748 switch (state) { 749 case IEEE80211_NODE_MESH_HOLDING: 750 ms->ms_ppath->mpp_peerdown(ni); 751 break; 752 case IEEE80211_NODE_MESH_ESTABLISHED: 753 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 754 break; 755 default: 756 break; 757 } 758 } 759 760 /* 761 * Helper function to generate a unique local ID required for mesh 762 * peer establishment. 763 */ 764 static void 765 mesh_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 } 772 773 static uint32_t 774 mesh_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 */ 792 static int 793 mesh_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 */ 823 static struct ieee80211_node * 824 mesh_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 */ 846 static void 847 mesh_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 } 928 929 static struct mbuf * 930 mesh_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 */ 1019 static __inline int 1020 mesh_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 1040 static int 1041 mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1042 { 1043 #define HAS_SEQ(type) ((type & 0x4) == 0) 1044 struct ieee80211vap *vap = ni->ni_vap; 1045 struct ieee80211com *ic = ni->ni_ic; 1046 struct ifnet *ifp = vap->iv_ifp; 1047 struct ieee80211_frame *wh; 1048 const struct ieee80211_meshcntl *mc; 1049 int hdrspace, meshdrlen, need_tap; 1050 uint8_t dir, type, subtype, qos; 1051 uint32_t seq; 1052 uint8_t *addr; 1053 ieee80211_seq rxseq; 1054 1055 KASSERT(ni != NULL, ("null node")); 1056 ni->ni_inact = ni->ni_inact_reload; 1057 1058 need_tap = 1; /* mbuf need to be tapped. */ 1059 type = -1; /* undefined */ 1060 1061 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1062 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1063 ni->ni_macaddr, NULL, 1064 "too short (1): len %u", m->m_pkthdr.len); 1065 vap->iv_stats.is_rx_tooshort++; 1066 goto out; 1067 } 1068 /* 1069 * Bit of a cheat here, we use a pointer for a 3-address 1070 * frame format but don't reference fields past outside 1071 * ieee80211_frame_min w/o first validating the data is 1072 * present. 1073 */ 1074 wh = mtod(m, struct ieee80211_frame *); 1075 1076 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1077 IEEE80211_FC0_VERSION_0) { 1078 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1079 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1080 vap->iv_stats.is_rx_badversion++; 1081 goto err; 1082 } 1083 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1084 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1085 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1086 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1087 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1088 ni->ni_noise = nf; 1089 if (HAS_SEQ(type)) { 1090 uint8_t tid = ieee80211_gettid(wh); 1091 1092 if (IEEE80211_QOS_HAS_SEQ(wh) && 1093 TID_TO_WME_AC(tid) >= WME_AC_VI) 1094 ic->ic_wme.wme_hipri_traffic++; 1095 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1096 if (! ieee80211_check_rxseq(ni, wh)) { 1097 /* duplicate, discard */ 1098 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1099 wh->i_addr1, "duplicate", 1100 "seqno <%u,%u> fragno <%u,%u> tid %u", 1101 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1102 ni->ni_rxseqs[tid] >> 1103 IEEE80211_SEQ_SEQ_SHIFT, 1104 rxseq & IEEE80211_SEQ_FRAG_MASK, 1105 ni->ni_rxseqs[tid] & 1106 IEEE80211_SEQ_FRAG_MASK, 1107 tid); 1108 vap->iv_stats.is_rx_dup++; 1109 IEEE80211_NODE_STAT(ni, rx_dup); 1110 goto out; 1111 } 1112 ni->ni_rxseqs[tid] = rxseq; 1113 } 1114 } 1115 #ifdef IEEE80211_DEBUG 1116 /* 1117 * It's easier, but too expensive, to simulate different mesh 1118 * topologies by consulting the ACL policy very early, so do this 1119 * only under DEBUG. 1120 * 1121 * NB: this check is also done upon peering link initiation. 1122 */ 1123 if (vap->iv_acl != NULL && 1124 !vap->iv_acl->iac_check(vap, wh, wh->i_addr2)) { 1125 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1126 wh, NULL, "%s", "disallowed by ACL"); 1127 vap->iv_stats.is_rx_acl++; 1128 goto out; 1129 } 1130 #endif 1131 switch (type) { 1132 case IEEE80211_FC0_TYPE_DATA: 1133 if (ni == vap->iv_bss) 1134 goto out; 1135 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1136 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1137 ni->ni_macaddr, NULL, 1138 "peer link not yet established (%d)", 1139 ni->ni_mlstate); 1140 vap->iv_stats.is_mesh_nolink++; 1141 goto out; 1142 } 1143 if (dir != IEEE80211_FC1_DIR_FROMDS && 1144 dir != IEEE80211_FC1_DIR_DSTODS) { 1145 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1146 wh, "data", "incorrect dir 0x%x", dir); 1147 vap->iv_stats.is_rx_wrongdir++; 1148 goto err; 1149 } 1150 /* pull up enough to get to the mesh control */ 1151 hdrspace = ieee80211_hdrspace(ic, wh); 1152 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1153 (m = m_pullup(m, hdrspace + 1154 sizeof(struct ieee80211_meshcntl))) == NULL) { 1155 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1156 ni->ni_macaddr, NULL, 1157 "data too short: expecting %u", hdrspace); 1158 vap->iv_stats.is_rx_tooshort++; 1159 goto out; /* XXX */ 1160 } 1161 /* 1162 * Now calculate the full extent of the headers. Note 1163 * mesh_decap will pull up anything we didn't get 1164 * above when it strips the 802.11 headers. 1165 */ 1166 mc = (const struct ieee80211_meshcntl *) 1167 (mtod(m, const uint8_t *) + hdrspace); 1168 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1169 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1170 hdrspace += meshdrlen; 1171 seq = LE_READ_4(mc->mc_seq); 1172 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1173 addr = wh->i_addr3; 1174 else 1175 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1176 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1177 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1178 addr, "data", "%s", "not to me"); 1179 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1180 goto out; 1181 } 1182 if (mesh_checkpseq(vap, addr, seq) != 0) { 1183 vap->iv_stats.is_rx_dup++; 1184 goto out; 1185 } 1186 1187 /* 1188 * Potentially forward packet. See table s36 (p140) 1189 * for the rules. XXX tap fwd'd packets not for us? 1190 */ 1191 if (dir == IEEE80211_FC1_DIR_FROMDS || 1192 !mesh_isucastforme(vap, wh, mc)) { 1193 mesh_forward(vap, m, mc); 1194 if (dir == IEEE80211_FC1_DIR_DSTODS) 1195 goto out; 1196 /* NB: fall thru to deliver mcast frames locally */ 1197 } 1198 1199 /* 1200 * Save QoS bits for use below--before we strip the header. 1201 */ 1202 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1203 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1204 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1205 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1206 } else 1207 qos = 0; 1208 /* 1209 * Next up, any fragmentation. 1210 */ 1211 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1212 m = ieee80211_defrag(ni, m, hdrspace); 1213 if (m == NULL) { 1214 /* Fragment dropped or frame not complete yet */ 1215 goto out; 1216 } 1217 } 1218 wh = NULL; /* no longer valid, catch any uses */ 1219 1220 if (ieee80211_radiotap_active_vap(vap)) 1221 ieee80211_radiotap_rx(vap, m); 1222 need_tap = 0; 1223 1224 /* 1225 * Finally, strip the 802.11 header. 1226 */ 1227 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1228 if (m == NULL) { 1229 /* XXX mask bit to check for both */ 1230 /* don't count Null data frames as errors */ 1231 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1232 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1233 goto out; 1234 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1235 ni->ni_macaddr, "data", "%s", "decap error"); 1236 vap->iv_stats.is_rx_decap++; 1237 IEEE80211_NODE_STAT(ni, rx_decap); 1238 goto err; 1239 } 1240 if (qos & IEEE80211_QOS_AMSDU) { 1241 m = ieee80211_decap_amsdu(ni, m); 1242 if (m == NULL) 1243 return IEEE80211_FC0_TYPE_DATA; 1244 } 1245 ieee80211_deliver_data(vap, ni, m); 1246 return type; 1247 case IEEE80211_FC0_TYPE_MGT: 1248 vap->iv_stats.is_rx_mgmt++; 1249 IEEE80211_NODE_STAT(ni, rx_mgmt); 1250 if (dir != IEEE80211_FC1_DIR_NODS) { 1251 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1252 wh, "mgt", "incorrect dir 0x%x", dir); 1253 vap->iv_stats.is_rx_wrongdir++; 1254 goto err; 1255 } 1256 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1257 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1258 ni->ni_macaddr, "mgt", "too short: len %u", 1259 m->m_pkthdr.len); 1260 vap->iv_stats.is_rx_tooshort++; 1261 goto out; 1262 } 1263 #ifdef IEEE80211_DEBUG 1264 if ((ieee80211_msg_debug(vap) && 1265 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1266 ieee80211_msg_dumppkts(vap)) { 1267 if_printf(ifp, "received %s from %s rssi %d\n", 1268 ieee80211_mgt_subtype_name[subtype >> 1269 IEEE80211_FC0_SUBTYPE_SHIFT], 1270 ether_sprintf(wh->i_addr2), rssi); 1271 } 1272 #endif 1273 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1274 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1275 wh, NULL, "%s", "WEP set but not permitted"); 1276 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1277 goto out; 1278 } 1279 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1280 goto out; 1281 case IEEE80211_FC0_TYPE_CTL: 1282 vap->iv_stats.is_rx_ctl++; 1283 IEEE80211_NODE_STAT(ni, rx_ctrl); 1284 goto out; 1285 default: 1286 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1287 wh, "bad", "frame type 0x%x", type); 1288 /* should not come here */ 1289 break; 1290 } 1291 err: 1292 ifp->if_ierrors++; 1293 out: 1294 if (m != NULL) { 1295 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1296 ieee80211_radiotap_rx(vap, m); 1297 m_freem(m); 1298 } 1299 return type; 1300 } 1301 1302 static void 1303 mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1304 int rssi, int nf) 1305 { 1306 struct ieee80211vap *vap = ni->ni_vap; 1307 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1308 struct ieee80211com *ic = ni->ni_ic; 1309 struct ieee80211_frame *wh; 1310 uint8_t *frm, *efrm; 1311 1312 wh = mtod(m0, struct ieee80211_frame *); 1313 frm = (uint8_t *)&wh[1]; 1314 efrm = mtod(m0, uint8_t *) + m0->m_len; 1315 switch (subtype) { 1316 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1317 case IEEE80211_FC0_SUBTYPE_BEACON: 1318 { 1319 struct ieee80211_scanparams scan; 1320 /* 1321 * We process beacon/probe response 1322 * frames to discover neighbors. 1323 */ 1324 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1325 return; 1326 /* 1327 * Count frame now that we know it's to be processed. 1328 */ 1329 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1330 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1331 IEEE80211_NODE_STAT(ni, rx_beacons); 1332 } else 1333 IEEE80211_NODE_STAT(ni, rx_proberesp); 1334 /* 1335 * If scanning, just pass information to the scan module. 1336 */ 1337 if (ic->ic_flags & IEEE80211_F_SCAN) { 1338 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1339 /* 1340 * Actively scanning a channel marked passive; 1341 * send a probe request now that we know there 1342 * is 802.11 traffic present. 1343 * 1344 * XXX check if the beacon we recv'd gives 1345 * us what we need and suppress the probe req 1346 */ 1347 ieee80211_probe_curchan(vap, 1); 1348 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1349 } 1350 ieee80211_add_scan(vap, &scan, wh, 1351 subtype, rssi, nf); 1352 return; 1353 } 1354 1355 /* The rest of this code assumes we are running */ 1356 if (vap->iv_state != IEEE80211_S_RUN) 1357 return; 1358 /* 1359 * Ignore non-mesh STAs. 1360 */ 1361 if ((scan.capinfo & 1362 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1363 scan.meshid == NULL || scan.meshconf == NULL) { 1364 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1365 wh, "beacon", "%s", "not a mesh sta"); 1366 vap->iv_stats.is_mesh_wrongmesh++; 1367 return; 1368 } 1369 /* 1370 * Ignore STAs for other mesh networks. 1371 */ 1372 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1373 mesh_verify_meshconf(vap, scan.meshconf)) { 1374 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1375 wh, "beacon", "%s", "not for our mesh"); 1376 vap->iv_stats.is_mesh_wrongmesh++; 1377 return; 1378 } 1379 /* 1380 * Peer only based on the current ACL policy. 1381 */ 1382 if (vap->iv_acl != NULL && 1383 !vap->iv_acl->iac_check(vap, wh, wh->i_addr2)) { 1384 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1385 wh, NULL, "%s", "disallowed by ACL"); 1386 vap->iv_stats.is_rx_acl++; 1387 return; 1388 } 1389 /* 1390 * Do neighbor discovery. 1391 */ 1392 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1393 /* 1394 * Create a new entry in the neighbor table. 1395 */ 1396 ni = ieee80211_add_neighbor(vap, wh, &scan); 1397 } 1398 /* 1399 * Automatically peer with discovered nodes if possible. 1400 * XXX backoff on repeated failure 1401 */ 1402 if (ni != vap->iv_bss && 1403 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1404 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1405 uint16_t args[1]; 1406 1407 ni->ni_mlpid = mesh_generateid(vap); 1408 if (ni->ni_mlpid == 0) 1409 return; 1410 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1411 args[0] = ni->ni_mlpid; 1412 ieee80211_send_action(ni, 1413 IEEE80211_ACTION_CAT_MESHPEERING, 1414 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1415 ni->ni_mlrcnt = 0; 1416 mesh_peer_timeout_setup(ni); 1417 } 1418 break; 1419 } 1420 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1421 { 1422 uint8_t *ssid, *meshid, *rates, *xrates; 1423 uint8_t *sfrm; 1424 1425 if (vap->iv_state != IEEE80211_S_RUN) { 1426 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1427 wh, NULL, "wrong state %s", 1428 ieee80211_state_name[vap->iv_state]); 1429 vap->iv_stats.is_rx_mgtdiscard++; 1430 return; 1431 } 1432 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1433 /* frame must be directed */ 1434 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1435 wh, NULL, "%s", "not unicast"); 1436 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1437 return; 1438 } 1439 /* 1440 * prreq frame format 1441 * [tlv] ssid 1442 * [tlv] supported rates 1443 * [tlv] extended supported rates 1444 * [tlv] mesh id 1445 */ 1446 ssid = meshid = rates = xrates = NULL; 1447 sfrm = frm; 1448 while (efrm - frm > 1) { 1449 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1450 switch (*frm) { 1451 case IEEE80211_ELEMID_SSID: 1452 ssid = frm; 1453 break; 1454 case IEEE80211_ELEMID_RATES: 1455 rates = frm; 1456 break; 1457 case IEEE80211_ELEMID_XRATES: 1458 xrates = frm; 1459 break; 1460 case IEEE80211_ELEMID_MESHID: 1461 meshid = frm; 1462 break; 1463 } 1464 frm += frm[1] + 2; 1465 } 1466 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1467 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1468 if (xrates != NULL) 1469 IEEE80211_VERIFY_ELEMENT(xrates, 1470 IEEE80211_RATE_MAXSIZE - rates[1], return); 1471 if (meshid != NULL) { 1472 IEEE80211_VERIFY_ELEMENT(meshid, 1473 IEEE80211_MESHID_LEN, return); 1474 /* NB: meshid, not ssid */ 1475 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1476 } 1477 1478 /* XXX find a better class or define it's own */ 1479 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1480 "%s", "recv probe req"); 1481 /* 1482 * Some legacy 11b clients cannot hack a complete 1483 * probe response frame. When the request includes 1484 * only a bare-bones rate set, communicate this to 1485 * the transmit side. 1486 */ 1487 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1488 break; 1489 } 1490 1491 case IEEE80211_FC0_SUBTYPE_ACTION: 1492 case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: 1493 if (ni == vap->iv_bss) { 1494 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1495 wh, NULL, "%s", "unknown node"); 1496 vap->iv_stats.is_rx_mgtdiscard++; 1497 } else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1498 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1499 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1500 wh, NULL, "%s", "not for us"); 1501 vap->iv_stats.is_rx_mgtdiscard++; 1502 } else if (vap->iv_state != IEEE80211_S_RUN) { 1503 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1504 wh, NULL, "wrong state %s", 1505 ieee80211_state_name[vap->iv_state]); 1506 vap->iv_stats.is_rx_mgtdiscard++; 1507 } else { 1508 if (ieee80211_parse_action(ni, m0) == 0) 1509 (void)ic->ic_recv_action(ni, wh, frm, efrm); 1510 } 1511 break; 1512 1513 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1514 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1515 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1516 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1517 case IEEE80211_FC0_SUBTYPE_ATIM: 1518 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1519 case IEEE80211_FC0_SUBTYPE_AUTH: 1520 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1521 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1522 wh, NULL, "%s", "not handled"); 1523 vap->iv_stats.is_rx_mgtdiscard++; 1524 break; 1525 1526 default: 1527 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1528 wh, "mgt", "subtype 0x%x not handled", subtype); 1529 vap->iv_stats.is_rx_badsubtype++; 1530 break; 1531 } 1532 } 1533 1534 static void 1535 mesh_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 1536 { 1537 1538 switch (subtype) { 1539 case IEEE80211_FC0_SUBTYPE_BAR: 1540 ieee80211_recv_bar(ni, m); 1541 break; 1542 } 1543 } 1544 1545 /* 1546 * Parse meshpeering action ie's for open+confirm frames; the 1547 * important bits are returned in the supplied structure. 1548 */ 1549 static const struct ieee80211_meshpeer_ie * 1550 mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1551 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1552 const uint8_t *frm, const uint8_t *efrm, 1553 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1554 { 1555 struct ieee80211vap *vap = ni->ni_vap; 1556 const struct ieee80211_meshpeer_ie *mpie; 1557 const uint8_t *meshid, *meshconf, *meshpeer; 1558 1559 meshid = meshconf = meshpeer = NULL; 1560 while (efrm - frm > 1) { 1561 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1562 switch (*frm) { 1563 case IEEE80211_ELEMID_MESHID: 1564 meshid = frm; 1565 break; 1566 case IEEE80211_ELEMID_MESHCONF: 1567 meshconf = frm; 1568 break; 1569 case IEEE80211_ELEMID_MESHPEER: 1570 meshpeer = frm; 1571 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1572 memset(mp, 0, sizeof(*mp)); 1573 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1574 /* NB: peer link ID is optional on these frames */ 1575 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1576 mpie->peer_len == 8) { 1577 mp->peer_linkid = 0; 1578 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1579 } else { 1580 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1581 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1582 } 1583 break; 1584 } 1585 frm += frm[1] + 2; 1586 } 1587 1588 /* 1589 * Verify the contents of the frame. Action frames with 1590 * close subtype don't have a Mesh Configuration IE. 1591 * If if fails validation, close the peer link. 1592 */ 1593 KASSERT(meshpeer != NULL && 1594 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1595 ("parsing close action")); 1596 1597 if (mesh_verify_meshid(vap, meshid) || 1598 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1599 mesh_verify_meshconf(vap, meshconf)) { 1600 uint16_t args[3]; 1601 1602 IEEE80211_DISCARD(vap, 1603 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1604 wh, NULL, "%s", "not for our mesh"); 1605 vap->iv_stats.is_rx_mgtdiscard++; 1606 switch (ni->ni_mlstate) { 1607 case IEEE80211_NODE_MESH_IDLE: 1608 case IEEE80211_NODE_MESH_ESTABLISHED: 1609 case IEEE80211_NODE_MESH_HOLDING: 1610 /* ignore */ 1611 break; 1612 case IEEE80211_NODE_MESH_OPENSNT: 1613 case IEEE80211_NODE_MESH_OPENRCV: 1614 case IEEE80211_NODE_MESH_CONFIRMRCV: 1615 args[0] = ni->ni_mlpid; 1616 args[1] = ni->ni_mllid; 1617 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1618 ieee80211_send_action(ni, 1619 IEEE80211_ACTION_CAT_MESHPEERING, 1620 IEEE80211_ACTION_MESHPEERING_CLOSE, 1621 args); 1622 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1623 mesh_peer_timeout_setup(ni); 1624 break; 1625 } 1626 return NULL; 1627 } 1628 return (const struct ieee80211_meshpeer_ie *) mp; 1629 } 1630 1631 static int 1632 mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1633 const struct ieee80211_frame *wh, 1634 const uint8_t *frm, const uint8_t *efrm) 1635 { 1636 struct ieee80211vap *vap = ni->ni_vap; 1637 struct ieee80211_meshpeer_ie ie; 1638 const struct ieee80211_meshpeer_ie *meshpeer; 1639 uint16_t args[3]; 1640 1641 /* +2+2 for action + code + capabilites */ 1642 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1643 IEEE80211_ACTION_MESHPEERING_OPEN); 1644 if (meshpeer == NULL) { 1645 return 0; 1646 } 1647 1648 /* XXX move up */ 1649 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1650 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1651 1652 switch (ni->ni_mlstate) { 1653 case IEEE80211_NODE_MESH_IDLE: 1654 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1655 ni->ni_mllid = meshpeer->peer_llinkid; 1656 ni->ni_mlpid = mesh_generateid(vap); 1657 if (ni->ni_mlpid == 0) 1658 return 0; /* XXX */ 1659 args[0] = ni->ni_mlpid; 1660 /* Announce we're open too... */ 1661 ieee80211_send_action(ni, 1662 IEEE80211_ACTION_CAT_MESHPEERING, 1663 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1664 /* ...and confirm the link. */ 1665 args[0] = ni->ni_mlpid; 1666 args[1] = ni->ni_mllid; 1667 ieee80211_send_action(ni, 1668 IEEE80211_ACTION_CAT_MESHPEERING, 1669 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1670 args); 1671 mesh_peer_timeout_setup(ni); 1672 break; 1673 case IEEE80211_NODE_MESH_OPENRCV: 1674 /* Wrong Link ID */ 1675 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1676 args[0] = ni->ni_mllid; 1677 args[1] = ni->ni_mlpid; 1678 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1679 ieee80211_send_action(ni, 1680 IEEE80211_ACTION_CAT_MESHPEERING, 1681 IEEE80211_ACTION_MESHPEERING_CLOSE, 1682 args); 1683 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1684 mesh_peer_timeout_setup(ni); 1685 break; 1686 } 1687 /* Duplicate open, confirm again. */ 1688 args[0] = ni->ni_mlpid; 1689 args[1] = ni->ni_mllid; 1690 ieee80211_send_action(ni, 1691 IEEE80211_ACTION_CAT_MESHPEERING, 1692 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1693 args); 1694 break; 1695 case IEEE80211_NODE_MESH_OPENSNT: 1696 ni->ni_mllid = meshpeer->peer_llinkid; 1697 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1698 args[0] = ni->ni_mlpid; 1699 args[1] = ni->ni_mllid; 1700 ieee80211_send_action(ni, 1701 IEEE80211_ACTION_CAT_MESHPEERING, 1702 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1703 args); 1704 /* NB: don't setup/clear any timeout */ 1705 break; 1706 case IEEE80211_NODE_MESH_CONFIRMRCV: 1707 if (ni->ni_mlpid != meshpeer->peer_linkid || 1708 ni->ni_mllid != meshpeer->peer_llinkid) { 1709 args[0] = ni->ni_mlpid; 1710 args[1] = ni->ni_mllid; 1711 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1712 ieee80211_send_action(ni, 1713 IEEE80211_ACTION_CAT_MESHPEERING, 1714 IEEE80211_ACTION_MESHPEERING_CLOSE, 1715 args); 1716 mesh_linkchange(ni, 1717 IEEE80211_NODE_MESH_HOLDING); 1718 mesh_peer_timeout_setup(ni); 1719 break; 1720 } 1721 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1722 ni->ni_mllid = meshpeer->peer_llinkid; 1723 args[0] = ni->ni_mlpid; 1724 args[1] = ni->ni_mllid; 1725 ieee80211_send_action(ni, 1726 IEEE80211_ACTION_CAT_MESHPEERING, 1727 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1728 args); 1729 mesh_peer_timeout_stop(ni); 1730 break; 1731 case IEEE80211_NODE_MESH_ESTABLISHED: 1732 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1733 args[0] = ni->ni_mllid; 1734 args[1] = ni->ni_mlpid; 1735 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1736 ieee80211_send_action(ni, 1737 IEEE80211_ACTION_CAT_MESHPEERING, 1738 IEEE80211_ACTION_MESHPEERING_CLOSE, 1739 args); 1740 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1741 mesh_peer_timeout_setup(ni); 1742 break; 1743 } 1744 args[0] = ni->ni_mlpid; 1745 args[1] = ni->ni_mllid; 1746 ieee80211_send_action(ni, 1747 IEEE80211_ACTION_CAT_MESHPEERING, 1748 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1749 args); 1750 break; 1751 case IEEE80211_NODE_MESH_HOLDING: 1752 args[0] = ni->ni_mlpid; 1753 args[1] = meshpeer->peer_llinkid; 1754 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1755 ieee80211_send_action(ni, 1756 IEEE80211_ACTION_CAT_MESHPEERING, 1757 IEEE80211_ACTION_MESHPEERING_CLOSE, 1758 args); 1759 break; 1760 } 1761 return 0; 1762 } 1763 1764 static int 1765 mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1766 const struct ieee80211_frame *wh, 1767 const uint8_t *frm, const uint8_t *efrm) 1768 { 1769 struct ieee80211vap *vap = ni->ni_vap; 1770 struct ieee80211_meshpeer_ie ie; 1771 const struct ieee80211_meshpeer_ie *meshpeer; 1772 uint16_t args[3]; 1773 1774 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1775 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1776 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1777 if (meshpeer == NULL) { 1778 return 0; 1779 } 1780 1781 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1782 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1783 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1784 1785 switch (ni->ni_mlstate) { 1786 case IEEE80211_NODE_MESH_OPENRCV: 1787 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1788 mesh_peer_timeout_stop(ni); 1789 break; 1790 case IEEE80211_NODE_MESH_OPENSNT: 1791 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1792 break; 1793 case IEEE80211_NODE_MESH_HOLDING: 1794 args[0] = ni->ni_mlpid; 1795 args[1] = meshpeer->peer_llinkid; 1796 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1797 ieee80211_send_action(ni, 1798 IEEE80211_ACTION_CAT_MESHPEERING, 1799 IEEE80211_ACTION_MESHPEERING_CLOSE, 1800 args); 1801 break; 1802 case IEEE80211_NODE_MESH_CONFIRMRCV: 1803 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1804 args[0] = ni->ni_mlpid; 1805 args[1] = ni->ni_mllid; 1806 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1807 ieee80211_send_action(ni, 1808 IEEE80211_ACTION_CAT_MESHPEERING, 1809 IEEE80211_ACTION_MESHPEERING_CLOSE, 1810 args); 1811 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1812 mesh_peer_timeout_setup(ni); 1813 } 1814 break; 1815 default: 1816 IEEE80211_DISCARD(vap, 1817 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1818 wh, NULL, "received confirm in invalid state %d", 1819 ni->ni_mlstate); 1820 vap->iv_stats.is_rx_mgtdiscard++; 1821 break; 1822 } 1823 return 0; 1824 } 1825 1826 static int 1827 mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1828 const struct ieee80211_frame *wh, 1829 const uint8_t *frm, const uint8_t *efrm) 1830 { 1831 uint16_t args[3]; 1832 1833 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1834 ni, "%s", "recv PEER CLOSE"); 1835 1836 switch (ni->ni_mlstate) { 1837 case IEEE80211_NODE_MESH_IDLE: 1838 /* ignore */ 1839 break; 1840 case IEEE80211_NODE_MESH_OPENRCV: 1841 case IEEE80211_NODE_MESH_OPENSNT: 1842 case IEEE80211_NODE_MESH_CONFIRMRCV: 1843 case IEEE80211_NODE_MESH_ESTABLISHED: 1844 args[0] = ni->ni_mlpid; 1845 args[1] = ni->ni_mllid; 1846 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1847 ieee80211_send_action(ni, 1848 IEEE80211_ACTION_CAT_MESHPEERING, 1849 IEEE80211_ACTION_MESHPEERING_CLOSE, 1850 args); 1851 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1852 mesh_peer_timeout_setup(ni); 1853 break; 1854 case IEEE80211_NODE_MESH_HOLDING: 1855 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1856 mesh_peer_timeout_setup(ni); 1857 break; 1858 } 1859 return 0; 1860 } 1861 1862 /* 1863 * Link Metric handling. 1864 */ 1865 static int 1866 mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1867 const struct ieee80211_frame *wh, 1868 const uint8_t *frm, const uint8_t *efrm) 1869 { 1870 uint32_t metric; 1871 1872 metric = mesh_airtime_calc(ni); 1873 ieee80211_send_action(ni, 1874 IEEE80211_ACTION_CAT_MESHLMETRIC, 1875 IEEE80211_ACTION_MESHLMETRIC_REP, 1876 &metric); 1877 return 0; 1878 } 1879 1880 static int 1881 mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1882 const struct ieee80211_frame *wh, 1883 const uint8_t *frm, const uint8_t *efrm) 1884 { 1885 return 0; 1886 } 1887 1888 static int 1889 mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1890 { 1891 struct ieee80211_bpf_params params; 1892 1893 memset(¶ms, 0, sizeof(params)); 1894 params.ibp_pri = WME_AC_VO; 1895 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1896 /* XXX ucast/mcast */ 1897 params.ibp_try0 = ni->ni_txparms->maxretry; 1898 params.ibp_power = ni->ni_txpower; 1899 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1900 ¶ms); 1901 } 1902 1903 #define ADDSHORT(frm, v) do { \ 1904 frm[0] = (v) & 0xff; \ 1905 frm[1] = (v) >> 8; \ 1906 frm += 2; \ 1907 } while (0) 1908 #define ADDWORD(frm, v) do { \ 1909 frm[0] = (v) & 0xff; \ 1910 frm[1] = ((v) >> 8) & 0xff; \ 1911 frm[2] = ((v) >> 16) & 0xff; \ 1912 frm[3] = ((v) >> 24) & 0xff; \ 1913 frm += 4; \ 1914 } while (0) 1915 1916 static int 1917 mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1918 int category, int action, void *args0) 1919 { 1920 struct ieee80211vap *vap = ni->ni_vap; 1921 struct ieee80211com *ic = ni->ni_ic; 1922 uint16_t *args = args0; 1923 const struct ieee80211_rateset *rs; 1924 struct mbuf *m; 1925 uint8_t *frm; 1926 1927 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1928 "send PEER OPEN action: localid 0x%x", args[0]); 1929 1930 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1931 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1932 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1933 ieee80211_ref_node(ni); 1934 1935 m = ieee80211_getmgtframe(&frm, 1936 ic->ic_headroom + sizeof(struct ieee80211_frame), 1937 sizeof(uint16_t) /* action+category */ 1938 + sizeof(uint16_t) /* capabilites */ 1939 + 2 + IEEE80211_RATE_SIZE 1940 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1941 + 2 + IEEE80211_MESHID_LEN 1942 + sizeof(struct ieee80211_meshconf_ie) 1943 + sizeof(struct ieee80211_meshpeer_ie) 1944 ); 1945 if (m != NULL) { 1946 /* 1947 * mesh peer open action frame format: 1948 * [1] category 1949 * [1] action 1950 * [2] capabilities 1951 * [tlv] rates 1952 * [tlv] xrates 1953 * [tlv] mesh id 1954 * [tlv] mesh conf 1955 * [tlv] mesh peer link mgmt 1956 */ 1957 *frm++ = category; 1958 *frm++ = action; 1959 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 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 1976 static int 1977 mesh_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 + 2 + IEEE80211_RATE_SIZE 2003 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 2004 + 2 + IEEE80211_MESHID_LEN 2005 + sizeof(struct ieee80211_meshconf_ie) 2006 + sizeof(struct ieee80211_meshpeer_ie) 2007 ); 2008 if (m != NULL) { 2009 /* 2010 * mesh peer confirm action frame format: 2011 * [1] category 2012 * [1] action 2013 * [2] capabilities 2014 * [2] status code 2015 * [2] association id (peer ID) 2016 * [tlv] rates 2017 * [tlv] xrates 2018 * [tlv] mesh id 2019 * [tlv] mesh conf 2020 * [tlv] mesh peer link mgmt 2021 */ 2022 *frm++ = category; 2023 *frm++ = action; 2024 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2025 ADDSHORT(frm, 0); /* status code */ 2026 ADDSHORT(frm, args[1]); /* AID */ 2027 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2028 frm = ieee80211_add_rates(frm, rs); 2029 frm = ieee80211_add_xrates(frm, rs); 2030 frm = ieee80211_add_meshid(frm, vap); 2031 frm = ieee80211_add_meshconf(frm, vap); 2032 frm = ieee80211_add_meshpeer(frm, 2033 IEEE80211_MESH_PEER_LINK_CONFIRM, 2034 args[0], args[1], 0); 2035 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2036 return mesh_send_action(ni, m); 2037 } else { 2038 vap->iv_stats.is_tx_nobuf++; 2039 ieee80211_free_node(ni); 2040 return ENOMEM; 2041 } 2042 } 2043 2044 static int 2045 mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2046 int category, int action, void *args0) 2047 { 2048 struct ieee80211vap *vap = ni->ni_vap; 2049 struct ieee80211com *ic = ni->ni_ic; 2050 uint16_t *args = args0; 2051 struct mbuf *m; 2052 uint8_t *frm; 2053 2054 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2055 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2056 args[0], args[1], args[2]); 2057 2058 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2059 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2060 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2061 ieee80211_ref_node(ni); 2062 2063 m = ieee80211_getmgtframe(&frm, 2064 ic->ic_headroom + sizeof(struct ieee80211_frame), 2065 sizeof(uint16_t) /* action+category */ 2066 + sizeof(uint16_t) /* reason code */ 2067 + 2 + IEEE80211_MESHID_LEN 2068 + sizeof(struct ieee80211_meshpeer_ie) 2069 ); 2070 if (m != NULL) { 2071 /* 2072 * mesh peer close action frame format: 2073 * [1] category 2074 * [1] action 2075 * [2] reason code 2076 * [tlv] mesh id 2077 * [tlv] mesh peer link mgmt 2078 */ 2079 *frm++ = category; 2080 *frm++ = action; 2081 ADDSHORT(frm, args[2]); /* reason code */ 2082 frm = ieee80211_add_meshid(frm, vap); 2083 frm = ieee80211_add_meshpeer(frm, 2084 IEEE80211_MESH_PEER_LINK_CLOSE, 2085 args[0], args[1], args[2]); 2086 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2087 return mesh_send_action(ni, m); 2088 } else { 2089 vap->iv_stats.is_tx_nobuf++; 2090 ieee80211_free_node(ni); 2091 return ENOMEM; 2092 } 2093 } 2094 2095 static int 2096 mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2097 int category, int action, void *arg0) 2098 { 2099 struct ieee80211vap *vap = ni->ni_vap; 2100 struct ieee80211com *ic = ni->ni_ic; 2101 struct mbuf *m; 2102 uint8_t *frm; 2103 2104 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2105 "%s", "send LINK METRIC REQUEST action"); 2106 2107 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2108 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2109 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2110 ieee80211_ref_node(ni); 2111 2112 m = ieee80211_getmgtframe(&frm, 2113 ic->ic_headroom + sizeof(struct ieee80211_frame), 2114 sizeof(uint16_t) /* action+category */ 2115 ); 2116 if (m != NULL) { 2117 /* 2118 * mesh link metric request 2119 * [1] category 2120 * [1] action 2121 */ 2122 *frm++ = category; 2123 *frm++ = action; 2124 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2125 return mesh_send_action(ni, m); 2126 } else { 2127 vap->iv_stats.is_tx_nobuf++; 2128 ieee80211_free_node(ni); 2129 return ENOMEM; 2130 } 2131 } 2132 2133 static int 2134 mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2135 int category, int action, void *args0) 2136 { 2137 struct ieee80211vap *vap = ni->ni_vap; 2138 struct ieee80211com *ic = ni->ni_ic; 2139 uint32_t *metric = args0; 2140 struct mbuf *m; 2141 uint8_t *frm; 2142 2143 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2144 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2145 2146 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2147 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2148 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2149 ieee80211_ref_node(ni); 2150 2151 m = ieee80211_getmgtframe(&frm, 2152 ic->ic_headroom + sizeof(struct ieee80211_frame), 2153 sizeof(uint16_t) /* action+category */ 2154 + sizeof(struct ieee80211_meshlmetric_ie) 2155 ); 2156 if (m != NULL) { 2157 /* 2158 * mesh link metric reply 2159 * [1] category 2160 * [1] action 2161 * [tlv] mesh link metric 2162 */ 2163 *frm++ = category; 2164 *frm++ = action; 2165 frm = ieee80211_add_meshlmetric(frm, *metric); 2166 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2167 return mesh_send_action(ni, m); 2168 } else { 2169 vap->iv_stats.is_tx_nobuf++; 2170 ieee80211_free_node(ni); 2171 return ENOMEM; 2172 } 2173 } 2174 2175 static void 2176 mesh_peer_timeout_setup(struct ieee80211_node *ni) 2177 { 2178 switch (ni->ni_mlstate) { 2179 case IEEE80211_NODE_MESH_HOLDING: 2180 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2181 break; 2182 case IEEE80211_NODE_MESH_CONFIRMRCV: 2183 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2184 break; 2185 case IEEE80211_NODE_MESH_IDLE: 2186 ni->ni_mltval = 0; 2187 break; 2188 default: 2189 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2190 break; 2191 } 2192 if (ni->ni_mltval) 2193 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2194 mesh_peer_timeout_cb, ni); 2195 } 2196 2197 /* 2198 * Same as above but backoffs timer statisically 50%. 2199 */ 2200 static void 2201 mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2202 { 2203 uint32_t r; 2204 2205 r = arc4random(); 2206 ni->ni_mltval += r % ni->ni_mltval; 2207 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2208 ni); 2209 } 2210 2211 static __inline void 2212 mesh_peer_timeout_stop(struct ieee80211_node *ni) 2213 { 2214 callout_drain(&ni->ni_mltimer); 2215 } 2216 2217 /* 2218 * Mesh Peer Link Management FSM timeout handling. 2219 */ 2220 static void 2221 mesh_peer_timeout_cb(void *arg) 2222 { 2223 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2224 uint16_t args[3]; 2225 2226 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2227 ni, "mesh link timeout, state %d, retry counter %d", 2228 ni->ni_mlstate, ni->ni_mlrcnt); 2229 2230 switch (ni->ni_mlstate) { 2231 case IEEE80211_NODE_MESH_IDLE: 2232 case IEEE80211_NODE_MESH_ESTABLISHED: 2233 break; 2234 case IEEE80211_NODE_MESH_OPENSNT: 2235 case IEEE80211_NODE_MESH_OPENRCV: 2236 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2237 args[0] = ni->ni_mlpid; 2238 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2239 ieee80211_send_action(ni, 2240 IEEE80211_ACTION_CAT_MESHPEERING, 2241 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2242 ni->ni_mlrcnt = 0; 2243 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2244 mesh_peer_timeout_setup(ni); 2245 } else { 2246 args[0] = ni->ni_mlpid; 2247 ieee80211_send_action(ni, 2248 IEEE80211_ACTION_CAT_MESHPEERING, 2249 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2250 ni->ni_mlrcnt++; 2251 mesh_peer_timeout_backoff(ni); 2252 } 2253 break; 2254 case IEEE80211_NODE_MESH_CONFIRMRCV: 2255 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2256 args[0] = ni->ni_mlpid; 2257 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2258 ieee80211_send_action(ni, 2259 IEEE80211_ACTION_CAT_MESHPEERING, 2260 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2261 ni->ni_mlrcnt = 0; 2262 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2263 mesh_peer_timeout_setup(ni); 2264 } else { 2265 ni->ni_mlrcnt++; 2266 mesh_peer_timeout_setup(ni); 2267 } 2268 break; 2269 case IEEE80211_NODE_MESH_HOLDING: 2270 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2271 break; 2272 } 2273 } 2274 2275 static int 2276 mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2277 { 2278 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2279 2280 if (ie == NULL || ie[1] != ms->ms_idlen) 2281 return 1; 2282 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2283 } 2284 2285 /* 2286 * Check if we are using the same algorithms for this mesh. 2287 */ 2288 static int 2289 mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2290 { 2291 const struct ieee80211_meshconf_ie *meshconf = 2292 (const struct ieee80211_meshconf_ie *) ie; 2293 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2294 uint16_t cap; 2295 2296 if (meshconf == NULL) 2297 return 1; 2298 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2299 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2300 "unknown path selection algorithm: 0x%x\n", 2301 meshconf->conf_pselid); 2302 return 1; 2303 } 2304 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2305 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2306 "unknown path metric algorithm: 0x%x\n", 2307 meshconf->conf_pmetid); 2308 return 1; 2309 } 2310 if (meshconf->conf_ccid != 0) { 2311 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2312 "unknown congestion control algorithm: 0x%x\n", 2313 meshconf->conf_ccid); 2314 return 1; 2315 } 2316 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2317 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2318 "unknown sync algorithm: 0x%x\n", 2319 meshconf->conf_syncid); 2320 return 1; 2321 } 2322 if (meshconf->conf_authid != 0) { 2323 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2324 "unknown auth auth algorithm: 0x%x\n", 2325 meshconf->conf_pselid); 2326 return 1; 2327 } 2328 /* NB: conf_cap is only read correctly here */ 2329 cap = LE_READ_2(&meshconf->conf_cap); 2330 /* Not accepting peers */ 2331 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) { 2332 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2333 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2334 return 1; 2335 } 2336 return 0; 2337 } 2338 2339 static int 2340 mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2341 const uint8_t *ie) 2342 { 2343 const struct ieee80211_meshpeer_ie *meshpeer = 2344 (const struct ieee80211_meshpeer_ie *) ie; 2345 2346 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2347 meshpeer->peer_len > 10) 2348 return 1; 2349 switch (subtype) { 2350 case IEEE80211_MESH_PEER_LINK_OPEN: 2351 if (meshpeer->peer_len != 6) 2352 return 1; 2353 break; 2354 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2355 if (meshpeer->peer_len != 8) 2356 return 1; 2357 break; 2358 case IEEE80211_MESH_PEER_LINK_CLOSE: 2359 if (meshpeer->peer_len < 8) 2360 return 1; 2361 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2362 return 1; 2363 if (meshpeer->peer_rcode == 0) 2364 return 1; 2365 break; 2366 } 2367 return 0; 2368 } 2369 2370 /* 2371 * Add a Mesh ID IE to a frame. 2372 */ 2373 uint8_t * 2374 ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2375 { 2376 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2377 2378 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2379 2380 *frm++ = IEEE80211_ELEMID_MESHID; 2381 *frm++ = ms->ms_idlen; 2382 memcpy(frm, ms->ms_id, ms->ms_idlen); 2383 return frm + ms->ms_idlen; 2384 } 2385 2386 /* 2387 * Add a Mesh Configuration IE to a frame. 2388 * For now just use HWMP routing, Airtime link metric, Null Congestion 2389 * Signaling, Null Sync Protocol and Null Authentication. 2390 */ 2391 uint8_t * 2392 ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2393 { 2394 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2395 uint16_t caps; 2396 2397 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2398 2399 *frm++ = IEEE80211_ELEMID_MESHCONF; 2400 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2401 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2402 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2403 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2404 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2405 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2406 /* NB: set the number of neighbors before the rest */ 2407 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2408 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2409 *frm |= IEEE80211_MESHCONF_FORM_MP; 2410 frm += 1; 2411 caps = 0; 2412 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2413 caps |= IEEE80211_MESHCONF_CAP_AP; 2414 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2415 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2416 ADDSHORT(frm, caps); 2417 return frm; 2418 } 2419 2420 /* 2421 * Add a Mesh Peer Management IE to a frame. 2422 */ 2423 uint8_t * 2424 ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2425 uint16_t peerid, uint16_t reason) 2426 { 2427 /* XXX change for AH */ 2428 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2429 2430 KASSERT(localid != 0, ("localid == 0")); 2431 2432 *frm++ = IEEE80211_ELEMID_MESHPEER; 2433 switch (subtype) { 2434 case IEEE80211_MESH_PEER_LINK_OPEN: 2435 *frm++ = 6; /* length */ 2436 memcpy(frm, meshpeerproto, 4); 2437 frm += 4; 2438 ADDSHORT(frm, localid); /* local ID */ 2439 break; 2440 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2441 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2442 *frm++ = 8; /* length */ 2443 memcpy(frm, meshpeerproto, 4); 2444 frm += 4; 2445 ADDSHORT(frm, localid); /* local ID */ 2446 ADDSHORT(frm, peerid); /* peer ID */ 2447 break; 2448 case IEEE80211_MESH_PEER_LINK_CLOSE: 2449 if (peerid) 2450 *frm++ = 10; /* length */ 2451 else 2452 *frm++ = 8; /* length */ 2453 memcpy(frm, meshpeerproto, 4); 2454 frm += 4; 2455 ADDSHORT(frm, localid); /* local ID */ 2456 if (peerid) 2457 ADDSHORT(frm, peerid); /* peer ID */ 2458 ADDSHORT(frm, reason); 2459 break; 2460 } 2461 return frm; 2462 } 2463 2464 /* 2465 * Compute an Airtime Link Metric for the link with this node. 2466 * 2467 * Based on Draft 3.0 spec (11B.10, p.149). 2468 */ 2469 /* 2470 * Max 802.11s overhead. 2471 */ 2472 #define IEEE80211_MESH_MAXOVERHEAD \ 2473 (sizeof(struct ieee80211_qosframe_addr4) \ 2474 + sizeof(struct ieee80211_meshcntl_ae11) \ 2475 + sizeof(struct llc) \ 2476 + IEEE80211_ADDR_LEN \ 2477 + IEEE80211_WEP_IVLEN \ 2478 + IEEE80211_WEP_KIDLEN \ 2479 + IEEE80211_WEP_CRCLEN \ 2480 + IEEE80211_WEP_MICLEN \ 2481 + IEEE80211_CRC_LEN) 2482 uint32_t 2483 mesh_airtime_calc(struct ieee80211_node *ni) 2484 { 2485 #define M_BITS 8 2486 #define S_FACTOR (2 * M_BITS) 2487 struct ieee80211com *ic = ni->ni_ic; 2488 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2489 const static int nbits = 8192 << M_BITS; 2490 uint32_t overhead, rate, errrate; 2491 uint64_t res; 2492 2493 /* Time to transmit a frame */ 2494 rate = ni->ni_txrate; 2495 overhead = ieee80211_compute_duration(ic->ic_rt, 2496 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2497 /* Error rate in percentage */ 2498 /* XXX assuming small failures are ok */ 2499 errrate = (((ifp->if_oerrors + 2500 ifp->if_ierrors) / 100) << M_BITS) / 100; 2501 res = (overhead + (nbits / rate)) * 2502 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2503 2504 return (uint32_t)(res >> S_FACTOR); 2505 #undef M_BITS 2506 #undef S_FACTOR 2507 } 2508 2509 /* 2510 * Add a Mesh Link Metric report IE to a frame. 2511 */ 2512 uint8_t * 2513 ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2514 { 2515 *frm++ = IEEE80211_ELEMID_MESHLINK; 2516 *frm++ = 4; 2517 ADDWORD(frm, metric); 2518 return frm; 2519 } 2520 #undef ADDSHORT 2521 #undef ADDWORD 2522 2523 /* 2524 * Initialize any mesh-specific node state. 2525 */ 2526 void 2527 ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2528 { 2529 ni->ni_flags |= IEEE80211_NODE_QOS; 2530 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2531 } 2532 2533 /* 2534 * Cleanup any mesh-specific node state. 2535 */ 2536 void 2537 ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2538 { 2539 struct ieee80211vap *vap = ni->ni_vap; 2540 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2541 2542 callout_drain(&ni->ni_mltimer); 2543 /* NB: short-circuit callbacks after mesh_vdetach */ 2544 if (vap->iv_mesh != NULL) 2545 ms->ms_ppath->mpp_peerdown(ni); 2546 } 2547 2548 void 2549 ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2550 { 2551 ni->ni_meshidlen = ie[1]; 2552 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2553 } 2554 2555 /* 2556 * Setup mesh-specific node state on neighbor discovery. 2557 */ 2558 void 2559 ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2560 const struct ieee80211_frame *wh, 2561 const struct ieee80211_scanparams *sp) 2562 { 2563 ieee80211_parse_meshid(ni, sp->meshid); 2564 } 2565 2566 void 2567 ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2568 struct ieee80211_beacon_offsets *bo) 2569 { 2570 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2571 2572 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2573 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2574 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2575 } 2576 } 2577 2578 static int 2579 mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2580 { 2581 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2582 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2583 struct ieee80211_mesh_route *rt; 2584 struct ieee80211req_mesh_route *imr; 2585 size_t len, off; 2586 uint8_t *p; 2587 int error; 2588 2589 if (vap->iv_opmode != IEEE80211_M_MBSS) 2590 return ENOSYS; 2591 2592 error = 0; 2593 switch (ireq->i_type) { 2594 case IEEE80211_IOC_MESH_ID: 2595 ireq->i_len = ms->ms_idlen; 2596 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2597 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2598 break; 2599 case IEEE80211_IOC_MESH_AP: 2600 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2601 break; 2602 case IEEE80211_IOC_MESH_FWRD: 2603 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2604 break; 2605 case IEEE80211_IOC_MESH_TTL: 2606 ireq->i_val = ms->ms_ttl; 2607 break; 2608 case IEEE80211_IOC_MESH_RTCMD: 2609 switch (ireq->i_val) { 2610 case IEEE80211_MESH_RTCMD_LIST: 2611 len = 0; 2612 MESH_RT_LOCK(ms); 2613 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2614 len += sizeof(*imr); 2615 } 2616 MESH_RT_UNLOCK(ms); 2617 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2618 ireq->i_len = len; 2619 return ENOMEM; 2620 } 2621 ireq->i_len = len; 2622 /* XXX M_WAIT? */ 2623 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2624 if (p == NULL) 2625 return ENOMEM; 2626 off = 0; 2627 MESH_RT_LOCK(ms); 2628 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2629 if (off >= len) 2630 break; 2631 imr = (struct ieee80211req_mesh_route *) 2632 (p + off); 2633 imr->imr_flags = rt->rt_flags; 2634 IEEE80211_ADDR_COPY(imr->imr_dest, 2635 rt->rt_dest); 2636 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2637 rt->rt_nexthop); 2638 imr->imr_metric = rt->rt_metric; 2639 imr->imr_nhops = rt->rt_nhops; 2640 imr->imr_lifetime = rt->rt_lifetime; 2641 imr->imr_lastmseq = rt->rt_lastmseq; 2642 off += sizeof(*imr); 2643 } 2644 MESH_RT_UNLOCK(ms); 2645 error = copyout(p, (uint8_t *)ireq->i_data, 2646 ireq->i_len); 2647 free(p, M_TEMP); 2648 break; 2649 case IEEE80211_MESH_RTCMD_FLUSH: 2650 case IEEE80211_MESH_RTCMD_ADD: 2651 case IEEE80211_MESH_RTCMD_DELETE: 2652 return EINVAL; 2653 default: 2654 return ENOSYS; 2655 } 2656 break; 2657 case IEEE80211_IOC_MESH_PR_METRIC: 2658 len = strlen(ms->ms_pmetric->mpm_descr); 2659 if (ireq->i_len < len) 2660 return EINVAL; 2661 ireq->i_len = len; 2662 error = copyout(ms->ms_pmetric->mpm_descr, 2663 (uint8_t *)ireq->i_data, len); 2664 break; 2665 case IEEE80211_IOC_MESH_PR_PATH: 2666 len = strlen(ms->ms_ppath->mpp_descr); 2667 if (ireq->i_len < len) 2668 return EINVAL; 2669 ireq->i_len = len; 2670 error = copyout(ms->ms_ppath->mpp_descr, 2671 (uint8_t *)ireq->i_data, len); 2672 break; 2673 default: 2674 return ENOSYS; 2675 } 2676 2677 return error; 2678 } 2679 IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2680 2681 static int 2682 mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2683 { 2684 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2685 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2686 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2687 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2688 int error; 2689 2690 if (vap->iv_opmode != IEEE80211_M_MBSS) 2691 return ENOSYS; 2692 2693 error = 0; 2694 switch (ireq->i_type) { 2695 case IEEE80211_IOC_MESH_ID: 2696 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2697 return EINVAL; 2698 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2699 if (error != 0) 2700 break; 2701 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2702 ms->ms_idlen = ireq->i_len; 2703 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2704 error = ENETRESET; 2705 break; 2706 case IEEE80211_IOC_MESH_AP: 2707 if (ireq->i_val) 2708 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2709 else 2710 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2711 error = ENETRESET; 2712 break; 2713 case IEEE80211_IOC_MESH_FWRD: 2714 if (ireq->i_val) 2715 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2716 else 2717 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2718 break; 2719 case IEEE80211_IOC_MESH_TTL: 2720 ms->ms_ttl = (uint8_t) ireq->i_val; 2721 break; 2722 case IEEE80211_IOC_MESH_RTCMD: 2723 switch (ireq->i_val) { 2724 case IEEE80211_MESH_RTCMD_LIST: 2725 return EINVAL; 2726 case IEEE80211_MESH_RTCMD_FLUSH: 2727 ieee80211_mesh_rt_flush(vap); 2728 break; 2729 case IEEE80211_MESH_RTCMD_ADD: 2730 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2731 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2732 return EINVAL; 2733 error = copyin(ireq->i_data, &tmpaddr, 2734 IEEE80211_ADDR_LEN); 2735 if (error == 0) 2736 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2737 break; 2738 case IEEE80211_MESH_RTCMD_DELETE: 2739 ieee80211_mesh_rt_del(vap, ireq->i_data); 2740 break; 2741 default: 2742 return ENOSYS; 2743 } 2744 break; 2745 case IEEE80211_IOC_MESH_PR_METRIC: 2746 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2747 if (error == 0) { 2748 error = mesh_select_proto_metric(vap, tmpproto); 2749 if (error == 0) 2750 error = ENETRESET; 2751 } 2752 break; 2753 case IEEE80211_IOC_MESH_PR_PATH: 2754 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2755 if (error == 0) { 2756 error = mesh_select_proto_path(vap, tmpproto); 2757 if (error == 0) 2758 error = ENETRESET; 2759 } 2760 break; 2761 default: 2762 return ENOSYS; 2763 } 2764 return error; 2765 } 2766 IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2767