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_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) mtx_lock(&(ms)->ms_rt_lock) 143 #define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 144 #define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 145 146 MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 147 148 /* 149 * Helper functions to manipulate the Mesh routing table. 150 */ 151 152 static struct ieee80211_mesh_route * 153 mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 154 const uint8_t dest[IEEE80211_ADDR_LEN]) 155 { 156 struct ieee80211_mesh_route *rt; 157 158 MESH_RT_LOCK_ASSERT(ms); 159 160 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 161 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 162 return rt; 163 } 164 return NULL; 165 } 166 167 static struct ieee80211_mesh_route * 168 mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 169 const uint8_t dest[IEEE80211_ADDR_LEN]) 170 { 171 struct ieee80211_mesh_route *rt; 172 173 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 174 ("%s: adding broadcast to the routing table", __func__)); 175 176 MESH_RT_LOCK_ASSERT(ms); 177 178 rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 179 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 180 if (rt != NULL) { 181 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 182 rt->rt_priv = (void *)ALIGN(&rt[1]); 183 rt->rt_crtime = ticks; 184 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 185 } 186 return rt; 187 } 188 189 struct ieee80211_mesh_route * 190 ieee80211_mesh_rt_find(struct ieee80211vap *vap, 191 const uint8_t dest[IEEE80211_ADDR_LEN]) 192 { 193 struct ieee80211_mesh_state *ms = vap->iv_mesh; 194 struct ieee80211_mesh_route *rt; 195 196 MESH_RT_LOCK(ms); 197 rt = mesh_rt_find_locked(ms, dest); 198 MESH_RT_UNLOCK(ms); 199 return rt; 200 } 201 202 struct ieee80211_mesh_route * 203 ieee80211_mesh_rt_add(struct ieee80211vap *vap, 204 const uint8_t dest[IEEE80211_ADDR_LEN]) 205 { 206 struct ieee80211_mesh_state *ms = vap->iv_mesh; 207 struct ieee80211_mesh_route *rt; 208 209 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 210 ("%s: duplicate entry in the routing table", __func__)); 211 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 212 ("%s: adding self to the routing table", __func__)); 213 214 MESH_RT_LOCK(ms); 215 rt = mesh_rt_add_locked(ms, dest); 216 MESH_RT_UNLOCK(ms); 217 return rt; 218 } 219 220 /* 221 * Add a proxy route (as needed) for the specified destination. 222 */ 223 void 224 ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 225 const uint8_t dest[IEEE80211_ADDR_LEN]) 226 { 227 struct ieee80211_mesh_state *ms = vap->iv_mesh; 228 struct ieee80211_mesh_route *rt; 229 230 MESH_RT_LOCK(ms); 231 rt = mesh_rt_find_locked(ms, dest); 232 if (rt == NULL) { 233 rt = mesh_rt_add_locked(ms, dest); 234 if (rt == NULL) { 235 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 236 "%s", "unable to add proxy entry"); 237 vap->iv_stats.is_mesh_rtaddfailed++; 238 } else { 239 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 240 "%s", "add proxy entry"); 241 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 242 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 243 | IEEE80211_MESHRT_FLAGS_PROXY; 244 } 245 /* XXX assert PROXY? */ 246 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 247 struct ieee80211com *ic = vap->iv_ic; 248 /* 249 * Fix existing entry created by received frames from 250 * stations that have some memory of dest. We also 251 * flush any frames held on the staging queue; delivering 252 * them is too much trouble right now. 253 */ 254 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 255 "%s", "fix proxy entry"); 256 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 257 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 258 | IEEE80211_MESHRT_FLAGS_PROXY; 259 /* XXX belongs in hwmp */ 260 ieee80211_ageq_drain_node(&ic->ic_stageq, 261 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 262 /* XXX stat? */ 263 } 264 MESH_RT_UNLOCK(ms); 265 } 266 267 static __inline void 268 mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 269 { 270 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 271 free(rt, M_80211_MESH_RT); 272 } 273 274 void 275 ieee80211_mesh_rt_del(struct ieee80211vap *vap, 276 const uint8_t dest[IEEE80211_ADDR_LEN]) 277 { 278 struct ieee80211_mesh_state *ms = vap->iv_mesh; 279 struct ieee80211_mesh_route *rt, *next; 280 281 MESH_RT_LOCK(ms); 282 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 283 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 284 mesh_rt_del(ms, rt); 285 MESH_RT_UNLOCK(ms); 286 return; 287 } 288 } 289 MESH_RT_UNLOCK(ms); 290 } 291 292 void 293 ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 294 { 295 struct ieee80211_mesh_state *ms = vap->iv_mesh; 296 struct ieee80211_mesh_route *rt, *next; 297 298 if (ms == NULL) 299 return; 300 MESH_RT_LOCK(ms); 301 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 302 mesh_rt_del(ms, rt); 303 MESH_RT_UNLOCK(ms); 304 } 305 306 void 307 ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 308 const uint8_t peer[IEEE80211_ADDR_LEN]) 309 { 310 struct ieee80211_mesh_state *ms = vap->iv_mesh; 311 struct ieee80211_mesh_route *rt, *next; 312 313 MESH_RT_LOCK(ms); 314 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 315 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 316 mesh_rt_del(ms, rt); 317 } 318 MESH_RT_UNLOCK(ms); 319 } 320 321 /* 322 * Flush expired routing entries, i.e. those in invalid state for 323 * some time. 324 */ 325 static void 326 mesh_rt_flush_invalid(struct ieee80211vap *vap) 327 { 328 struct ieee80211_mesh_state *ms = vap->iv_mesh; 329 struct ieee80211_mesh_route *rt, *next; 330 331 if (ms == NULL) 332 return; 333 MESH_RT_LOCK(ms); 334 TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 335 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 336 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 337 mesh_rt_del(ms, rt); 338 } 339 MESH_RT_UNLOCK(ms); 340 } 341 342 #define N(a) (sizeof(a) / sizeof(a[0])) 343 int 344 ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 345 { 346 int i, firstempty = -1; 347 348 for (i = 0; i < N(mesh_proto_paths); i++) { 349 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 350 IEEE80211_MESH_PROTO_DSZ) == 0) 351 return EEXIST; 352 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 353 firstempty = i; 354 } 355 if (firstempty < 0) 356 return ENOSPC; 357 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 358 mesh_proto_paths[firstempty].mpp_active = 1; 359 return 0; 360 } 361 362 int 363 ieee80211_mesh_register_proto_metric(const struct 364 ieee80211_mesh_proto_metric *mpm) 365 { 366 int i, firstempty = -1; 367 368 for (i = 0; i < N(mesh_proto_metrics); i++) { 369 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 370 IEEE80211_MESH_PROTO_DSZ) == 0) 371 return EEXIST; 372 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 373 firstempty = i; 374 } 375 if (firstempty < 0) 376 return ENOSPC; 377 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 378 mesh_proto_metrics[firstempty].mpm_active = 1; 379 return 0; 380 } 381 382 static int 383 mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 384 { 385 struct ieee80211_mesh_state *ms = vap->iv_mesh; 386 int i; 387 388 for (i = 0; i < N(mesh_proto_paths); i++) { 389 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 390 ms->ms_ppath = &mesh_proto_paths[i]; 391 return 0; 392 } 393 } 394 return ENOENT; 395 } 396 397 static int 398 mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 399 { 400 struct ieee80211_mesh_state *ms = vap->iv_mesh; 401 int i; 402 403 for (i = 0; i < N(mesh_proto_metrics); i++) { 404 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 405 ms->ms_pmetric = &mesh_proto_metrics[i]; 406 return 0; 407 } 408 } 409 return ENOENT; 410 } 411 #undef N 412 413 static void 414 ieee80211_mesh_init(void) 415 { 416 417 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 418 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 419 420 /* 421 * Setup mesh parameters that depends on the clock frequency. 422 */ 423 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 424 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 425 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 426 427 /* 428 * Register action frame handlers. 429 */ 430 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 431 IEEE80211_ACTION_MESHPEERING_OPEN, 432 mesh_recv_action_meshpeering_open); 433 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 434 IEEE80211_ACTION_MESHPEERING_CONFIRM, 435 mesh_recv_action_meshpeering_confirm); 436 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 437 IEEE80211_ACTION_MESHPEERING_CLOSE, 438 mesh_recv_action_meshpeering_close); 439 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 440 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 441 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 442 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 443 444 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 445 IEEE80211_ACTION_MESHPEERING_OPEN, 446 mesh_send_action_meshpeering_open); 447 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 448 IEEE80211_ACTION_MESHPEERING_CONFIRM, 449 mesh_send_action_meshpeering_confirm); 450 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 451 IEEE80211_ACTION_MESHPEERING_CLOSE, 452 mesh_send_action_meshpeering_close); 453 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 454 IEEE80211_ACTION_MESHLMETRIC_REQ, 455 mesh_send_action_meshlink_request); 456 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 457 IEEE80211_ACTION_MESHLMETRIC_REP, 458 mesh_send_action_meshlink_reply); 459 460 /* 461 * Register Airtime Link Metric. 462 */ 463 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 464 465 } 466 SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 467 468 void 469 ieee80211_mesh_attach(struct ieee80211com *ic) 470 { 471 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 472 } 473 474 void 475 ieee80211_mesh_detach(struct ieee80211com *ic) 476 { 477 } 478 479 static void 480 mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 481 { 482 struct ieee80211com *ic = ni->ni_ic; 483 uint16_t args[3]; 484 485 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 486 args[0] = ni->ni_mlpid; 487 args[1] = ni->ni_mllid; 488 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 489 ieee80211_send_action(ni, 490 IEEE80211_ACTION_CAT_MESHPEERING, 491 IEEE80211_ACTION_MESHPEERING_CLOSE, 492 args); 493 } 494 callout_drain(&ni->ni_mltimer); 495 /* XXX belongs in hwmp */ 496 ieee80211_ageq_drain_node(&ic->ic_stageq, 497 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 498 } 499 500 static void 501 mesh_vdetach(struct ieee80211vap *vap) 502 { 503 struct ieee80211_mesh_state *ms = vap->iv_mesh; 504 505 callout_drain(&ms->ms_cleantimer); 506 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 507 NULL); 508 ieee80211_mesh_rt_flush(vap); 509 mtx_destroy(&ms->ms_rt_lock); 510 ms->ms_ppath->mpp_vdetach(vap); 511 free(vap->iv_mesh, M_80211_VAP); 512 vap->iv_mesh = NULL; 513 } 514 515 static void 516 mesh_vattach(struct ieee80211vap *vap) 517 { 518 struct ieee80211_mesh_state *ms; 519 vap->iv_newstate = mesh_newstate; 520 vap->iv_input = mesh_input; 521 vap->iv_opdetach = mesh_vdetach; 522 vap->iv_recv_mgmt = mesh_recv_mgmt; 523 ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 524 M_NOWAIT | M_ZERO); 525 if (ms == NULL) { 526 printf("%s: couldn't alloc MBSS state\n", __func__); 527 return; 528 } 529 vap->iv_mesh = ms; 530 ms->ms_seq = 0; 531 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 532 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 533 TAILQ_INIT(&ms->ms_routes); 534 mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 535 callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 536 mesh_select_proto_metric(vap, "AIRTIME"); 537 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 538 mesh_select_proto_path(vap, "HWMP"); 539 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 540 ms->ms_ppath->mpp_vattach(vap); 541 } 542 543 /* 544 * IEEE80211_M_MBSS vap state machine handler. 545 */ 546 static int 547 mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 548 { 549 struct ieee80211_mesh_state *ms = vap->iv_mesh; 550 struct ieee80211com *ic = vap->iv_ic; 551 struct ieee80211_node *ni; 552 enum ieee80211_state ostate; 553 554 IEEE80211_LOCK_ASSERT(ic); 555 556 ostate = vap->iv_state; 557 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 558 __func__, ieee80211_state_name[ostate], 559 ieee80211_state_name[nstate], arg); 560 vap->iv_state = nstate; /* state transition */ 561 if (ostate != IEEE80211_S_SCAN) 562 ieee80211_cancel_scan(vap); /* background scan */ 563 ni = vap->iv_bss; /* NB: no reference held */ 564 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 565 callout_drain(&ms->ms_cleantimer); 566 switch (nstate) { 567 case IEEE80211_S_INIT: 568 switch (ostate) { 569 case IEEE80211_S_SCAN: 570 ieee80211_cancel_scan(vap); 571 break; 572 case IEEE80211_S_CAC: 573 ieee80211_dfs_cac_stop(vap); 574 break; 575 case IEEE80211_S_RUN: 576 ieee80211_iterate_nodes(&ic->ic_sta, 577 mesh_vdetach_peers, NULL); 578 break; 579 default: 580 break; 581 } 582 if (ostate != IEEE80211_S_INIT) { 583 /* NB: optimize INIT -> INIT case */ 584 ieee80211_reset_bss(vap); 585 ieee80211_mesh_rt_flush(vap); 586 } 587 break; 588 case IEEE80211_S_SCAN: 589 switch (ostate) { 590 case IEEE80211_S_INIT: 591 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 592 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 593 ms->ms_idlen != 0) { 594 /* 595 * Already have a channel and a mesh ID; bypass 596 * the scan and startup immediately. 597 */ 598 ieee80211_create_ibss(vap, vap->iv_des_chan); 599 break; 600 } 601 /* 602 * Initiate a scan. We can come here as a result 603 * of an IEEE80211_IOC_SCAN_REQ too in which case 604 * the vap will be marked with IEEE80211_FEXT_SCANREQ 605 * and the scan request parameters will be present 606 * in iv_scanreq. Otherwise we do the default. 607 */ 608 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 609 ieee80211_check_scan(vap, 610 vap->iv_scanreq_flags, 611 vap->iv_scanreq_duration, 612 vap->iv_scanreq_mindwell, 613 vap->iv_scanreq_maxdwell, 614 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 615 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 616 } else 617 ieee80211_check_scan_current(vap); 618 break; 619 default: 620 break; 621 } 622 break; 623 case IEEE80211_S_CAC: 624 /* 625 * Start CAC on a DFS channel. We come here when starting 626 * a bss on a DFS channel (see ieee80211_create_ibss). 627 */ 628 ieee80211_dfs_cac_start(vap); 629 break; 630 case IEEE80211_S_RUN: 631 switch (ostate) { 632 case IEEE80211_S_INIT: 633 /* 634 * Already have a channel; bypass the 635 * scan and startup immediately. 636 * Note that ieee80211_create_ibss will call 637 * back to do a RUN->RUN state change. 638 */ 639 ieee80211_create_ibss(vap, 640 ieee80211_ht_adjust_channel(ic, 641 ic->ic_curchan, vap->iv_flags_ht)); 642 /* NB: iv_bss is changed on return */ 643 break; 644 case IEEE80211_S_CAC: 645 /* 646 * NB: This is the normal state change when CAC 647 * expires and no radar was detected; no need to 648 * clear the CAC timer as it's already expired. 649 */ 650 /* fall thru... */ 651 case IEEE80211_S_CSA: 652 #if 0 653 /* 654 * Shorten inactivity timer of associated stations 655 * to weed out sta's that don't follow a CSA. 656 */ 657 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 658 #endif 659 /* 660 * Update bss node channel to reflect where 661 * we landed after CSA. 662 */ 663 ieee80211_node_set_chan(vap->iv_bss, 664 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 665 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 666 /* XXX bypass debug msgs */ 667 break; 668 case IEEE80211_S_SCAN: 669 case IEEE80211_S_RUN: 670 #ifdef IEEE80211_DEBUG 671 if (ieee80211_msg_debug(vap)) { 672 struct ieee80211_node *ni = vap->iv_bss; 673 ieee80211_note(vap, 674 "synchronized with %s meshid ", 675 ether_sprintf(ni->ni_meshid)); 676 ieee80211_print_essid(ni->ni_meshid, 677 ni->ni_meshidlen); 678 /* XXX MCS/HT */ 679 printf(" channel %d\n", 680 ieee80211_chan2ieee(ic, ic->ic_curchan)); 681 } 682 #endif 683 break; 684 default: 685 break; 686 } 687 ieee80211_node_authorize(vap->iv_bss); 688 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 689 mesh_rt_cleanup_cb, vap); 690 break; 691 default: 692 break; 693 } 694 /* NB: ostate not nstate */ 695 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 696 return 0; 697 } 698 699 static void 700 mesh_rt_cleanup_cb(void *arg) 701 { 702 struct ieee80211vap *vap = arg; 703 struct ieee80211_mesh_state *ms = vap->iv_mesh; 704 705 mesh_rt_flush_invalid(vap); 706 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 707 mesh_rt_cleanup_cb, vap); 708 } 709 710 711 /* 712 * Helper function to note the Mesh Peer Link FSM change. 713 */ 714 static void 715 mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 716 { 717 struct ieee80211vap *vap = ni->ni_vap; 718 struct ieee80211_mesh_state *ms = vap->iv_mesh; 719 #ifdef IEEE80211_DEBUG 720 static const char *meshlinkstates[] = { 721 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 722 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 723 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 724 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 725 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 726 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 727 }; 728 #endif 729 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 730 ni, "peer link: %s -> %s", 731 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 732 733 /* track neighbor count */ 734 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 735 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 736 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 737 ms->ms_neighbors++; 738 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 739 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 740 state != IEEE80211_NODE_MESH_ESTABLISHED) { 741 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 742 ms->ms_neighbors--; 743 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 744 } 745 ni->ni_mlstate = state; 746 switch (state) { 747 case IEEE80211_NODE_MESH_HOLDING: 748 ms->ms_ppath->mpp_peerdown(ni); 749 break; 750 case IEEE80211_NODE_MESH_ESTABLISHED: 751 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 752 break; 753 default: 754 break; 755 } 756 } 757 758 /* 759 * Helper function to generate a unique local ID required for mesh 760 * peer establishment. 761 */ 762 static void 763 mesh_checkid(void *arg, struct ieee80211_node *ni) 764 { 765 uint16_t *r = arg; 766 767 if (*r == ni->ni_mllid) 768 *(uint16_t *)arg = 0; 769 } 770 771 static uint32_t 772 mesh_generateid(struct ieee80211vap *vap) 773 { 774 int maxiter = 4; 775 uint16_t r; 776 777 do { 778 get_random_bytes(&r, 2); 779 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 780 maxiter--; 781 } while (r == 0 && maxiter > 0); 782 return r; 783 } 784 785 /* 786 * Verifies if we already received this packet by checking its 787 * sequence number. 788 * Returns 0 if the frame is to be accepted, 1 otherwise. 789 */ 790 static int 791 mesh_checkpseq(struct ieee80211vap *vap, 792 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 793 { 794 struct ieee80211_mesh_route *rt; 795 796 rt = ieee80211_mesh_rt_find(vap, source); 797 if (rt == NULL) { 798 rt = ieee80211_mesh_rt_add(vap, source); 799 if (rt == NULL) { 800 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 801 "%s", "add mcast route failed"); 802 vap->iv_stats.is_mesh_rtaddfailed++; 803 return 1; 804 } 805 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 806 "add mcast route, mesh seqno %d", seq); 807 rt->rt_lastmseq = seq; 808 return 0; 809 } 810 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 811 return 1; 812 } else { 813 rt->rt_lastmseq = seq; 814 return 0; 815 } 816 } 817 818 /* 819 * Iterate the routing table and locate the next hop. 820 */ 821 static struct ieee80211_node * 822 mesh_find_txnode(struct ieee80211vap *vap, 823 const uint8_t dest[IEEE80211_ADDR_LEN]) 824 { 825 struct ieee80211_mesh_route *rt; 826 827 rt = ieee80211_mesh_rt_find(vap, dest); 828 if (rt == NULL) 829 return NULL; 830 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 831 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 832 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 833 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 834 /* XXX stat */ 835 return NULL; 836 } 837 return ieee80211_find_txnode(vap, rt->rt_nexthop); 838 } 839 840 /* 841 * Forward the specified frame. 842 * Decrement the TTL and set TA to our MAC address. 843 */ 844 static void 845 mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 846 const struct ieee80211_meshcntl *mc) 847 { 848 struct ieee80211com *ic = vap->iv_ic; 849 struct ieee80211_mesh_state *ms = vap->iv_mesh; 850 struct ifnet *ifp = vap->iv_ifp; 851 struct ifnet *parent = ic->ic_ifp; 852 const struct ieee80211_frame *wh = 853 mtod(m, const struct ieee80211_frame *); 854 struct mbuf *mcopy; 855 struct ieee80211_meshcntl *mccopy; 856 struct ieee80211_frame *whcopy; 857 struct ieee80211_node *ni; 858 int err; 859 860 if (mc->mc_ttl == 0) { 861 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 862 "%s", "frame not fwd'd, ttl 0"); 863 vap->iv_stats.is_mesh_fwd_ttl++; 864 return; 865 } 866 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 867 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 868 "%s", "frame not fwd'd, fwding disabled"); 869 vap->iv_stats.is_mesh_fwd_disabled++; 870 return; 871 } 872 mcopy = m_dup(m, M_DONTWAIT); 873 if (mcopy == NULL) { 874 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 875 "%s", "frame not fwd'd, cannot dup"); 876 vap->iv_stats.is_mesh_fwd_nobuf++; 877 ifp->if_oerrors++; 878 return; 879 } 880 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 881 sizeof(struct ieee80211_meshcntl)); 882 if (mcopy == NULL) { 883 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 884 "%s", "frame not fwd'd, too short"); 885 vap->iv_stats.is_mesh_fwd_tooshort++; 886 ifp->if_oerrors++; 887 m_freem(mcopy); 888 return; 889 } 890 whcopy = mtod(mcopy, struct ieee80211_frame *); 891 mccopy = (struct ieee80211_meshcntl *) 892 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 893 /* XXX clear other bits? */ 894 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 895 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 896 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 897 ni = ieee80211_ref_node(vap->iv_bss); 898 mcopy->m_flags |= M_MCAST; 899 } else { 900 ni = mesh_find_txnode(vap, whcopy->i_addr3); 901 if (ni == NULL) { 902 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 903 "%s", "frame not fwd'd, no path"); 904 vap->iv_stats.is_mesh_fwd_nopath++; 905 m_freem(mcopy); 906 return; 907 } 908 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 909 } 910 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 911 mccopy->mc_ttl--; 912 913 /* XXX calculate priority so drivers can find the tx queue */ 914 M_WME_SETAC(mcopy, WME_AC_BE); 915 916 /* XXX do we know m_nextpkt is NULL? */ 917 mcopy->m_pkthdr.rcvif = (void *) ni; 918 err = parent->if_transmit(parent, mcopy); 919 if (err != 0) { 920 /* NB: IFQ_HANDOFF reclaims mbuf */ 921 ieee80211_free_node(ni); 922 } else { 923 ifp->if_opackets++; 924 } 925 } 926 927 static struct mbuf * 928 mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 929 { 930 #define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 931 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 932 sizeof(struct ieee80211_meshcntl_ae11)]; 933 const struct ieee80211_qosframe_addr4 *wh; 934 const struct ieee80211_meshcntl_ae10 *mc; 935 struct ether_header *eh; 936 struct llc *llc; 937 int ae; 938 939 if (m->m_len < hdrlen + sizeof(*llc) && 940 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 941 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 942 "discard data frame: %s", "m_pullup failed"); 943 vap->iv_stats.is_rx_tooshort++; 944 return NULL; 945 } 946 memcpy(b, mtod(m, caddr_t), hdrlen); 947 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 948 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 949 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 950 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 951 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 952 953 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 954 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 955 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 956 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 957 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 958 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 959 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 960 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 961 llc = NULL; 962 } else { 963 m_adj(m, hdrlen - sizeof(*eh)); 964 } 965 eh = mtod(m, struct ether_header *); 966 ae = mc->mc_flags & 3; 967 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 968 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 969 if (ae == 0) { 970 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 971 } else if (ae == 1) { 972 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 973 } else { 974 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 975 (const struct ieee80211_frame *)wh, NULL, 976 "bad AE %d", ae); 977 vap->iv_stats.is_mesh_badae++; 978 m_freem(m); 979 return NULL; 980 } 981 } else { 982 if (ae == 0) { 983 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 984 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 985 } else if (ae == 2) { 986 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 987 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 988 } else { 989 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 990 (const struct ieee80211_frame *)wh, NULL, 991 "bad AE %d", ae); 992 vap->iv_stats.is_mesh_badae++; 993 m_freem(m); 994 return NULL; 995 } 996 } 997 #ifdef ALIGNED_POINTER 998 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 999 m = ieee80211_realign(vap, m, sizeof(*eh)); 1000 if (m == NULL) 1001 return NULL; 1002 } 1003 #endif /* ALIGNED_POINTER */ 1004 if (llc != NULL) { 1005 eh = mtod(m, struct ether_header *); 1006 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 1007 } 1008 return m; 1009 #undef WDIR 1010 } 1011 1012 /* 1013 * Return non-zero if the unicast mesh data frame should be processed 1014 * locally. Frames that are not proxy'd have our address, otherwise 1015 * we need to consult the routing table to look for a proxy entry. 1016 */ 1017 static __inline int 1018 mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 1019 const struct ieee80211_meshcntl *mc) 1020 { 1021 int ae = mc->mc_flags & 3; 1022 1023 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1024 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1025 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1026 if (ae == 2) { /* ucast w/ proxy */ 1027 const struct ieee80211_meshcntl_ae10 *mc10 = 1028 (const struct ieee80211_meshcntl_ae10 *) mc; 1029 struct ieee80211_mesh_route *rt = 1030 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1031 /* check for proxy route to ourself */ 1032 return (rt != NULL && 1033 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1034 } else /* ucast w/o proxy */ 1035 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1036 } 1037 1038 static int 1039 mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1040 { 1041 #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1042 #define HAS_SEQ(type) ((type & 0x4) == 0) 1043 struct ieee80211vap *vap = ni->ni_vap; 1044 struct ieee80211com *ic = ni->ni_ic; 1045 struct ifnet *ifp = vap->iv_ifp; 1046 struct ieee80211_frame *wh; 1047 const struct ieee80211_meshcntl *mc; 1048 int hdrspace, meshdrlen, need_tap; 1049 uint8_t dir, type, subtype, qos; 1050 uint32_t seq; 1051 uint8_t *addr; 1052 ieee80211_seq rxseq; 1053 1054 KASSERT(ni != NULL, ("null node")); 1055 ni->ni_inact = ni->ni_inact_reload; 1056 1057 need_tap = 1; /* mbuf need to be tapped. */ 1058 type = -1; /* undefined */ 1059 1060 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1061 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1062 ni->ni_macaddr, NULL, 1063 "too short (1): len %u", m->m_pkthdr.len); 1064 vap->iv_stats.is_rx_tooshort++; 1065 goto out; 1066 } 1067 /* 1068 * Bit of a cheat here, we use a pointer for a 3-address 1069 * frame format but don't reference fields past outside 1070 * ieee80211_frame_min w/o first validating the data is 1071 * present. 1072 */ 1073 wh = mtod(m, struct ieee80211_frame *); 1074 1075 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1076 IEEE80211_FC0_VERSION_0) { 1077 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1078 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1079 vap->iv_stats.is_rx_badversion++; 1080 goto err; 1081 } 1082 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1083 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1084 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1085 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1086 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1087 ni->ni_noise = nf; 1088 if (HAS_SEQ(type)) { 1089 uint8_t tid = ieee80211_gettid(wh); 1090 1091 if (IEEE80211_QOS_HAS_SEQ(wh) && 1092 TID_TO_WME_AC(tid) >= WME_AC_VI) 1093 ic->ic_wme.wme_hipri_traffic++; 1094 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1095 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1096 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1097 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1098 /* duplicate, discard */ 1099 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1100 wh->i_addr1, "duplicate", 1101 "seqno <%u,%u> fragno <%u,%u> tid %u", 1102 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1103 ni->ni_rxseqs[tid] >> 1104 IEEE80211_SEQ_SEQ_SHIFT, 1105 rxseq & IEEE80211_SEQ_FRAG_MASK, 1106 ni->ni_rxseqs[tid] & 1107 IEEE80211_SEQ_FRAG_MASK, 1108 tid); 1109 vap->iv_stats.is_rx_dup++; 1110 IEEE80211_NODE_STAT(ni, rx_dup); 1111 goto out; 1112 } 1113 ni->ni_rxseqs[tid] = rxseq; 1114 } 1115 } 1116 #ifdef IEEE80211_DEBUG 1117 /* 1118 * It's easier, but too expensive, to simulate different mesh 1119 * topologies by consulting the ACL policy very early, so do this 1120 * only under DEBUG. 1121 * 1122 * NB: this check is also done upon peering link initiation. 1123 */ 1124 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, 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->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[2] + 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 case IEEE80211_FC0_SUBTYPE_ACTION: 1491 if (vap->iv_state != IEEE80211_S_RUN) { 1492 vap->iv_stats.is_rx_mgtdiscard++; 1493 break; 1494 } 1495 /* 1496 * We received an action for an unknown neighbor. 1497 * XXX: wait for it to beacon or create ieee80211_node? 1498 */ 1499 if (ni == vap->iv_bss) { 1500 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1501 wh, NULL, "%s", "unknown node"); 1502 vap->iv_stats.is_rx_mgtdiscard++; 1503 break; 1504 } 1505 /* 1506 * Discard if not for us. 1507 */ 1508 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1509 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1510 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1511 wh, NULL, "%s", "not for me"); 1512 vap->iv_stats.is_rx_mgtdiscard++; 1513 break; 1514 } 1515 /* XXX parse_action is a bit useless now */ 1516 if (ieee80211_parse_action(ni, m0) == 0) 1517 ic->ic_recv_action(ni, wh, frm, efrm); 1518 break; 1519 case IEEE80211_FC0_SUBTYPE_AUTH: 1520 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1521 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1522 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1523 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1524 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1525 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1526 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1527 wh, NULL, "%s", "not handled"); 1528 vap->iv_stats.is_rx_mgtdiscard++; 1529 return; 1530 default: 1531 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1532 wh, "mgt", "subtype 0x%x not handled", subtype); 1533 vap->iv_stats.is_rx_badsubtype++; 1534 break; 1535 } 1536 } 1537 1538 /* 1539 * Parse meshpeering action ie's for open+confirm frames; the 1540 * important bits are returned in the supplied structure. 1541 */ 1542 static const struct ieee80211_meshpeer_ie * 1543 mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1544 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1545 const uint8_t *frm, const uint8_t *efrm, 1546 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1547 { 1548 struct ieee80211vap *vap = ni->ni_vap; 1549 const struct ieee80211_meshpeer_ie *mpie; 1550 const uint8_t *meshid, *meshconf, *meshpeer; 1551 1552 meshid = meshconf = meshpeer = NULL; 1553 while (efrm - frm > 1) { 1554 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1555 switch (*frm) { 1556 case IEEE80211_ELEMID_MESHID: 1557 meshid = frm; 1558 break; 1559 case IEEE80211_ELEMID_MESHCONF: 1560 meshconf = frm; 1561 break; 1562 case IEEE80211_ELEMID_MESHPEER: 1563 meshpeer = frm; 1564 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1565 memset(mp, 0, sizeof(*mp)); 1566 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1567 /* NB: peer link ID is optional on these frames */ 1568 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1569 mpie->peer_len == 8) { 1570 mp->peer_linkid = 0; 1571 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1572 } else { 1573 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1574 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1575 } 1576 break; 1577 } 1578 frm += frm[1] + 2; 1579 } 1580 1581 /* 1582 * Verify the contents of the frame. Action frames with 1583 * close subtype don't have a Mesh Configuration IE. 1584 * If if fails validation, close the peer link. 1585 */ 1586 KASSERT(meshpeer != NULL && 1587 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1588 ("parsing close action")); 1589 1590 if (mesh_verify_meshid(vap, meshid) || 1591 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1592 mesh_verify_meshconf(vap, meshconf)) { 1593 uint16_t args[3]; 1594 1595 IEEE80211_DISCARD(vap, 1596 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1597 wh, NULL, "%s", "not for our mesh"); 1598 vap->iv_stats.is_rx_mgtdiscard++; 1599 switch (ni->ni_mlstate) { 1600 case IEEE80211_NODE_MESH_IDLE: 1601 case IEEE80211_NODE_MESH_ESTABLISHED: 1602 case IEEE80211_NODE_MESH_HOLDING: 1603 /* ignore */ 1604 break; 1605 case IEEE80211_NODE_MESH_OPENSNT: 1606 case IEEE80211_NODE_MESH_OPENRCV: 1607 case IEEE80211_NODE_MESH_CONFIRMRCV: 1608 args[0] = ni->ni_mlpid; 1609 args[1] = ni->ni_mllid; 1610 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1611 ieee80211_send_action(ni, 1612 IEEE80211_ACTION_CAT_MESHPEERING, 1613 IEEE80211_ACTION_MESHPEERING_CLOSE, 1614 args); 1615 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1616 mesh_peer_timeout_setup(ni); 1617 break; 1618 } 1619 return NULL; 1620 } 1621 return (const struct ieee80211_meshpeer_ie *) mp; 1622 } 1623 1624 static int 1625 mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1626 const struct ieee80211_frame *wh, 1627 const uint8_t *frm, const uint8_t *efrm) 1628 { 1629 struct ieee80211vap *vap = ni->ni_vap; 1630 struct ieee80211_meshpeer_ie ie; 1631 const struct ieee80211_meshpeer_ie *meshpeer; 1632 uint16_t args[3]; 1633 1634 /* +2+2 for action + code + capabilites */ 1635 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1636 IEEE80211_ACTION_MESHPEERING_OPEN); 1637 if (meshpeer == NULL) { 1638 return 0; 1639 } 1640 1641 /* XXX move up */ 1642 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1643 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1644 1645 switch (ni->ni_mlstate) { 1646 case IEEE80211_NODE_MESH_IDLE: 1647 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1648 ni->ni_mllid = meshpeer->peer_llinkid; 1649 ni->ni_mlpid = mesh_generateid(vap); 1650 if (ni->ni_mlpid == 0) 1651 return 0; /* XXX */ 1652 args[0] = ni->ni_mlpid; 1653 /* Announce we're open too... */ 1654 ieee80211_send_action(ni, 1655 IEEE80211_ACTION_CAT_MESHPEERING, 1656 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1657 /* ...and confirm the link. */ 1658 args[0] = ni->ni_mlpid; 1659 args[1] = ni->ni_mllid; 1660 ieee80211_send_action(ni, 1661 IEEE80211_ACTION_CAT_MESHPEERING, 1662 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1663 args); 1664 mesh_peer_timeout_setup(ni); 1665 break; 1666 case IEEE80211_NODE_MESH_OPENRCV: 1667 /* Wrong Link ID */ 1668 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1669 args[0] = ni->ni_mllid; 1670 args[1] = ni->ni_mlpid; 1671 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1672 ieee80211_send_action(ni, 1673 IEEE80211_ACTION_CAT_MESHPEERING, 1674 IEEE80211_ACTION_MESHPEERING_CLOSE, 1675 args); 1676 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1677 mesh_peer_timeout_setup(ni); 1678 break; 1679 } 1680 /* Duplicate open, confirm again. */ 1681 args[0] = ni->ni_mlpid; 1682 args[1] = ni->ni_mllid; 1683 ieee80211_send_action(ni, 1684 IEEE80211_ACTION_CAT_MESHPEERING, 1685 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1686 args); 1687 break; 1688 case IEEE80211_NODE_MESH_OPENSNT: 1689 ni->ni_mllid = meshpeer->peer_llinkid; 1690 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1691 args[0] = ni->ni_mlpid; 1692 args[1] = ni->ni_mllid; 1693 ieee80211_send_action(ni, 1694 IEEE80211_ACTION_CAT_MESHPEERING, 1695 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1696 args); 1697 /* NB: don't setup/clear any timeout */ 1698 break; 1699 case IEEE80211_NODE_MESH_CONFIRMRCV: 1700 if (ni->ni_mlpid != meshpeer->peer_linkid || 1701 ni->ni_mllid != meshpeer->peer_llinkid) { 1702 args[0] = ni->ni_mlpid; 1703 args[1] = ni->ni_mllid; 1704 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1705 ieee80211_send_action(ni, 1706 IEEE80211_ACTION_CAT_MESHPEERING, 1707 IEEE80211_ACTION_MESHPEERING_CLOSE, 1708 args); 1709 mesh_linkchange(ni, 1710 IEEE80211_NODE_MESH_HOLDING); 1711 mesh_peer_timeout_setup(ni); 1712 break; 1713 } 1714 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1715 ni->ni_mllid = meshpeer->peer_llinkid; 1716 args[0] = ni->ni_mlpid; 1717 args[1] = ni->ni_mllid; 1718 ieee80211_send_action(ni, 1719 IEEE80211_ACTION_CAT_MESHPEERING, 1720 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1721 args); 1722 mesh_peer_timeout_stop(ni); 1723 break; 1724 case IEEE80211_NODE_MESH_ESTABLISHED: 1725 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1726 args[0] = ni->ni_mllid; 1727 args[1] = ni->ni_mlpid; 1728 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1729 ieee80211_send_action(ni, 1730 IEEE80211_ACTION_CAT_MESHPEERING, 1731 IEEE80211_ACTION_MESHPEERING_CLOSE, 1732 args); 1733 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1734 mesh_peer_timeout_setup(ni); 1735 break; 1736 } 1737 args[0] = ni->ni_mlpid; 1738 args[1] = ni->ni_mllid; 1739 ieee80211_send_action(ni, 1740 IEEE80211_ACTION_CAT_MESHPEERING, 1741 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1742 args); 1743 break; 1744 case IEEE80211_NODE_MESH_HOLDING: 1745 args[0] = ni->ni_mlpid; 1746 args[1] = meshpeer->peer_llinkid; 1747 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1748 ieee80211_send_action(ni, 1749 IEEE80211_ACTION_CAT_MESHPEERING, 1750 IEEE80211_ACTION_MESHPEERING_CLOSE, 1751 args); 1752 break; 1753 } 1754 return 0; 1755 } 1756 1757 static int 1758 mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1759 const struct ieee80211_frame *wh, 1760 const uint8_t *frm, const uint8_t *efrm) 1761 { 1762 struct ieee80211vap *vap = ni->ni_vap; 1763 struct ieee80211_meshpeer_ie ie; 1764 const struct ieee80211_meshpeer_ie *meshpeer; 1765 uint16_t args[3]; 1766 1767 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1768 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1769 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1770 if (meshpeer == NULL) { 1771 return 0; 1772 } 1773 1774 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1775 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1776 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1777 1778 switch (ni->ni_mlstate) { 1779 case IEEE80211_NODE_MESH_OPENRCV: 1780 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1781 mesh_peer_timeout_stop(ni); 1782 break; 1783 case IEEE80211_NODE_MESH_OPENSNT: 1784 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1785 break; 1786 case IEEE80211_NODE_MESH_HOLDING: 1787 args[0] = ni->ni_mlpid; 1788 args[1] = meshpeer->peer_llinkid; 1789 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1790 ieee80211_send_action(ni, 1791 IEEE80211_ACTION_CAT_MESHPEERING, 1792 IEEE80211_ACTION_MESHPEERING_CLOSE, 1793 args); 1794 break; 1795 case IEEE80211_NODE_MESH_CONFIRMRCV: 1796 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1797 args[0] = ni->ni_mlpid; 1798 args[1] = ni->ni_mllid; 1799 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1800 ieee80211_send_action(ni, 1801 IEEE80211_ACTION_CAT_MESHPEERING, 1802 IEEE80211_ACTION_MESHPEERING_CLOSE, 1803 args); 1804 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1805 mesh_peer_timeout_setup(ni); 1806 } 1807 break; 1808 default: 1809 IEEE80211_DISCARD(vap, 1810 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1811 wh, NULL, "received confirm in invalid state %d", 1812 ni->ni_mlstate); 1813 vap->iv_stats.is_rx_mgtdiscard++; 1814 break; 1815 } 1816 return 0; 1817 } 1818 1819 static int 1820 mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1821 const struct ieee80211_frame *wh, 1822 const uint8_t *frm, const uint8_t *efrm) 1823 { 1824 uint16_t args[3]; 1825 1826 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1827 ni, "%s", "recv PEER CLOSE"); 1828 1829 switch (ni->ni_mlstate) { 1830 case IEEE80211_NODE_MESH_IDLE: 1831 /* ignore */ 1832 break; 1833 case IEEE80211_NODE_MESH_OPENRCV: 1834 case IEEE80211_NODE_MESH_OPENSNT: 1835 case IEEE80211_NODE_MESH_CONFIRMRCV: 1836 case IEEE80211_NODE_MESH_ESTABLISHED: 1837 args[0] = ni->ni_mlpid; 1838 args[1] = ni->ni_mllid; 1839 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1840 ieee80211_send_action(ni, 1841 IEEE80211_ACTION_CAT_MESHPEERING, 1842 IEEE80211_ACTION_MESHPEERING_CLOSE, 1843 args); 1844 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1845 mesh_peer_timeout_setup(ni); 1846 break; 1847 case IEEE80211_NODE_MESH_HOLDING: 1848 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1849 mesh_peer_timeout_setup(ni); 1850 break; 1851 } 1852 return 0; 1853 } 1854 1855 /* 1856 * Link Metric handling. 1857 */ 1858 static int 1859 mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1860 const struct ieee80211_frame *wh, 1861 const uint8_t *frm, const uint8_t *efrm) 1862 { 1863 uint32_t metric; 1864 1865 metric = mesh_airtime_calc(ni); 1866 ieee80211_send_action(ni, 1867 IEEE80211_ACTION_CAT_MESHLMETRIC, 1868 IEEE80211_ACTION_MESHLMETRIC_REP, 1869 &metric); 1870 return 0; 1871 } 1872 1873 static int 1874 mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1875 const struct ieee80211_frame *wh, 1876 const uint8_t *frm, const uint8_t *efrm) 1877 { 1878 return 0; 1879 } 1880 1881 static int 1882 mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1883 { 1884 struct ieee80211_bpf_params params; 1885 1886 memset(¶ms, 0, sizeof(params)); 1887 params.ibp_pri = WME_AC_VO; 1888 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1889 /* XXX ucast/mcast */ 1890 params.ibp_try0 = ni->ni_txparms->maxretry; 1891 params.ibp_power = ni->ni_txpower; 1892 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1893 ¶ms); 1894 } 1895 1896 #define ADDSHORT(frm, v) do { \ 1897 frm[0] = (v) & 0xff; \ 1898 frm[1] = (v) >> 8; \ 1899 frm += 2; \ 1900 } while (0) 1901 #define ADDWORD(frm, v) do { \ 1902 frm[0] = (v) & 0xff; \ 1903 frm[1] = ((v) >> 8) & 0xff; \ 1904 frm[2] = ((v) >> 16) & 0xff; \ 1905 frm[3] = ((v) >> 24) & 0xff; \ 1906 frm += 4; \ 1907 } while (0) 1908 1909 static int 1910 mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1911 int category, int action, void *args0) 1912 { 1913 struct ieee80211vap *vap = ni->ni_vap; 1914 struct ieee80211com *ic = ni->ni_ic; 1915 uint16_t *args = args0; 1916 const struct ieee80211_rateset *rs; 1917 struct mbuf *m; 1918 uint8_t *frm; 1919 1920 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1921 "send PEER OPEN action: localid 0x%x", args[0]); 1922 1923 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1924 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1925 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1926 ieee80211_ref_node(ni); 1927 1928 m = ieee80211_getmgtframe(&frm, 1929 ic->ic_headroom + sizeof(struct ieee80211_frame), 1930 sizeof(uint16_t) /* action+category */ 1931 + sizeof(uint16_t) /* capabilites */ 1932 + 2 + IEEE80211_RATE_SIZE 1933 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1934 + 2 + IEEE80211_MESHID_LEN 1935 + sizeof(struct ieee80211_meshconf_ie) 1936 + sizeof(struct ieee80211_meshpeer_ie) 1937 ); 1938 if (m != NULL) { 1939 /* 1940 * mesh peer open action frame format: 1941 * [1] category 1942 * [1] action 1943 * [2] capabilities 1944 * [tlv] rates 1945 * [tlv] xrates 1946 * [tlv] mesh id 1947 * [tlv] mesh conf 1948 * [tlv] mesh peer link mgmt 1949 */ 1950 *frm++ = category; 1951 *frm++ = action; 1952 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1953 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1954 frm = ieee80211_add_rates(frm, rs); 1955 frm = ieee80211_add_xrates(frm, rs); 1956 frm = ieee80211_add_meshid(frm, vap); 1957 frm = ieee80211_add_meshconf(frm, vap); 1958 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1959 args[0], 0, 0); 1960 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1961 return mesh_send_action(ni, m); 1962 } else { 1963 vap->iv_stats.is_tx_nobuf++; 1964 ieee80211_free_node(ni); 1965 return ENOMEM; 1966 } 1967 } 1968 1969 static int 1970 mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1971 int category, int action, void *args0) 1972 { 1973 struct ieee80211vap *vap = ni->ni_vap; 1974 struct ieee80211com *ic = ni->ni_ic; 1975 uint16_t *args = args0; 1976 const struct ieee80211_rateset *rs; 1977 struct mbuf *m; 1978 uint8_t *frm; 1979 1980 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1981 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1982 args[0], args[1]); 1983 1984 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1985 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1986 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 1987 ieee80211_ref_node(ni); 1988 1989 m = ieee80211_getmgtframe(&frm, 1990 ic->ic_headroom + sizeof(struct ieee80211_frame), 1991 sizeof(uint16_t) /* action+category */ 1992 + sizeof(uint16_t) /* capabilites */ 1993 + sizeof(uint16_t) /* status code */ 1994 + sizeof(uint16_t) /* AID */ 1995 + 2 + IEEE80211_RATE_SIZE 1996 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1997 + 2 + IEEE80211_MESHID_LEN 1998 + sizeof(struct ieee80211_meshconf_ie) 1999 + sizeof(struct ieee80211_meshpeer_ie) 2000 ); 2001 if (m != NULL) { 2002 /* 2003 * mesh peer confirm action frame format: 2004 * [1] category 2005 * [1] action 2006 * [2] capabilities 2007 * [2] status code 2008 * [2] association id (peer ID) 2009 * [tlv] rates 2010 * [tlv] xrates 2011 * [tlv] mesh id 2012 * [tlv] mesh conf 2013 * [tlv] mesh peer link mgmt 2014 */ 2015 *frm++ = category; 2016 *frm++ = action; 2017 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2018 ADDSHORT(frm, 0); /* status code */ 2019 ADDSHORT(frm, args[1]); /* AID */ 2020 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2021 frm = ieee80211_add_rates(frm, rs); 2022 frm = ieee80211_add_xrates(frm, rs); 2023 frm = ieee80211_add_meshid(frm, vap); 2024 frm = ieee80211_add_meshconf(frm, vap); 2025 frm = ieee80211_add_meshpeer(frm, 2026 IEEE80211_MESH_PEER_LINK_CONFIRM, 2027 args[0], args[1], 0); 2028 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2029 return mesh_send_action(ni, m); 2030 } else { 2031 vap->iv_stats.is_tx_nobuf++; 2032 ieee80211_free_node(ni); 2033 return ENOMEM; 2034 } 2035 } 2036 2037 static int 2038 mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2039 int category, int action, void *args0) 2040 { 2041 struct ieee80211vap *vap = ni->ni_vap; 2042 struct ieee80211com *ic = ni->ni_ic; 2043 uint16_t *args = args0; 2044 struct mbuf *m; 2045 uint8_t *frm; 2046 2047 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2048 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2049 args[0], args[1], args[2]); 2050 2051 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2052 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2053 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2054 ieee80211_ref_node(ni); 2055 2056 m = ieee80211_getmgtframe(&frm, 2057 ic->ic_headroom + sizeof(struct ieee80211_frame), 2058 sizeof(uint16_t) /* action+category */ 2059 + sizeof(uint16_t) /* reason code */ 2060 + 2 + IEEE80211_MESHID_LEN 2061 + sizeof(struct ieee80211_meshpeer_ie) 2062 ); 2063 if (m != NULL) { 2064 /* 2065 * mesh peer close action frame format: 2066 * [1] category 2067 * [1] action 2068 * [2] reason code 2069 * [tlv] mesh id 2070 * [tlv] mesh peer link mgmt 2071 */ 2072 *frm++ = category; 2073 *frm++ = action; 2074 ADDSHORT(frm, args[2]); /* reason code */ 2075 frm = ieee80211_add_meshid(frm, vap); 2076 frm = ieee80211_add_meshpeer(frm, 2077 IEEE80211_MESH_PEER_LINK_CLOSE, 2078 args[0], args[1], args[2]); 2079 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2080 return mesh_send_action(ni, m); 2081 } else { 2082 vap->iv_stats.is_tx_nobuf++; 2083 ieee80211_free_node(ni); 2084 return ENOMEM; 2085 } 2086 } 2087 2088 static int 2089 mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2090 int category, int action, void *arg0) 2091 { 2092 struct ieee80211vap *vap = ni->ni_vap; 2093 struct ieee80211com *ic = ni->ni_ic; 2094 struct mbuf *m; 2095 uint8_t *frm; 2096 2097 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2098 "%s", "send LINK METRIC REQUEST action"); 2099 2100 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2101 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2102 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2103 ieee80211_ref_node(ni); 2104 2105 m = ieee80211_getmgtframe(&frm, 2106 ic->ic_headroom + sizeof(struct ieee80211_frame), 2107 sizeof(uint16_t) /* action+category */ 2108 ); 2109 if (m != NULL) { 2110 /* 2111 * mesh link metric request 2112 * [1] category 2113 * [1] action 2114 */ 2115 *frm++ = category; 2116 *frm++ = action; 2117 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2118 return mesh_send_action(ni, m); 2119 } else { 2120 vap->iv_stats.is_tx_nobuf++; 2121 ieee80211_free_node(ni); 2122 return ENOMEM; 2123 } 2124 } 2125 2126 static int 2127 mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2128 int category, int action, void *args0) 2129 { 2130 struct ieee80211vap *vap = ni->ni_vap; 2131 struct ieee80211com *ic = ni->ni_ic; 2132 uint32_t *metric = args0; 2133 struct mbuf *m; 2134 uint8_t *frm; 2135 2136 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2137 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2138 2139 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2140 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2141 ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2142 ieee80211_ref_node(ni); 2143 2144 m = ieee80211_getmgtframe(&frm, 2145 ic->ic_headroom + sizeof(struct ieee80211_frame), 2146 sizeof(uint16_t) /* action+category */ 2147 + sizeof(struct ieee80211_meshlmetric_ie) 2148 ); 2149 if (m != NULL) { 2150 /* 2151 * mesh link metric reply 2152 * [1] category 2153 * [1] action 2154 * [tlv] mesh link metric 2155 */ 2156 *frm++ = category; 2157 *frm++ = action; 2158 frm = ieee80211_add_meshlmetric(frm, *metric); 2159 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2160 return mesh_send_action(ni, m); 2161 } else { 2162 vap->iv_stats.is_tx_nobuf++; 2163 ieee80211_free_node(ni); 2164 return ENOMEM; 2165 } 2166 } 2167 2168 static void 2169 mesh_peer_timeout_setup(struct ieee80211_node *ni) 2170 { 2171 switch (ni->ni_mlstate) { 2172 case IEEE80211_NODE_MESH_HOLDING: 2173 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2174 break; 2175 case IEEE80211_NODE_MESH_CONFIRMRCV: 2176 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2177 break; 2178 case IEEE80211_NODE_MESH_IDLE: 2179 ni->ni_mltval = 0; 2180 break; 2181 default: 2182 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2183 break; 2184 } 2185 if (ni->ni_mltval) 2186 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2187 mesh_peer_timeout_cb, ni); 2188 } 2189 2190 /* 2191 * Same as above but backoffs timer statisically 50%. 2192 */ 2193 static void 2194 mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2195 { 2196 uint32_t r; 2197 2198 r = arc4random(); 2199 ni->ni_mltval += r % ni->ni_mltval; 2200 callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 2201 ni); 2202 } 2203 2204 static __inline void 2205 mesh_peer_timeout_stop(struct ieee80211_node *ni) 2206 { 2207 callout_drain(&ni->ni_mltimer); 2208 } 2209 2210 /* 2211 * Mesh Peer Link Management FSM timeout handling. 2212 */ 2213 static void 2214 mesh_peer_timeout_cb(void *arg) 2215 { 2216 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2217 uint16_t args[3]; 2218 2219 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2220 ni, "mesh link timeout, state %d, retry counter %d", 2221 ni->ni_mlstate, ni->ni_mlrcnt); 2222 2223 switch (ni->ni_mlstate) { 2224 case IEEE80211_NODE_MESH_IDLE: 2225 case IEEE80211_NODE_MESH_ESTABLISHED: 2226 break; 2227 case IEEE80211_NODE_MESH_OPENSNT: 2228 case IEEE80211_NODE_MESH_OPENRCV: 2229 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2230 args[0] = ni->ni_mlpid; 2231 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2232 ieee80211_send_action(ni, 2233 IEEE80211_ACTION_CAT_MESHPEERING, 2234 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2235 ni->ni_mlrcnt = 0; 2236 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2237 mesh_peer_timeout_setup(ni); 2238 } else { 2239 args[0] = ni->ni_mlpid; 2240 ieee80211_send_action(ni, 2241 IEEE80211_ACTION_CAT_MESHPEERING, 2242 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2243 ni->ni_mlrcnt++; 2244 mesh_peer_timeout_backoff(ni); 2245 } 2246 break; 2247 case IEEE80211_NODE_MESH_CONFIRMRCV: 2248 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2249 args[0] = ni->ni_mlpid; 2250 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2251 ieee80211_send_action(ni, 2252 IEEE80211_ACTION_CAT_MESHPEERING, 2253 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2254 ni->ni_mlrcnt = 0; 2255 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2256 mesh_peer_timeout_setup(ni); 2257 } else { 2258 ni->ni_mlrcnt++; 2259 mesh_peer_timeout_setup(ni); 2260 } 2261 break; 2262 case IEEE80211_NODE_MESH_HOLDING: 2263 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2264 break; 2265 } 2266 } 2267 2268 static int 2269 mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2270 { 2271 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2272 2273 if (ie == NULL || ie[1] != ms->ms_idlen) 2274 return 1; 2275 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2276 } 2277 2278 /* 2279 * Check if we are using the same algorithms for this mesh. 2280 */ 2281 static int 2282 mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2283 { 2284 const struct ieee80211_meshconf_ie *meshconf = 2285 (const struct ieee80211_meshconf_ie *) ie; 2286 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2287 uint16_t cap; 2288 2289 if (meshconf == NULL) 2290 return 1; 2291 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2292 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2293 "unknown path selection algorithm: 0x%x\n", 2294 meshconf->conf_pselid); 2295 return 1; 2296 } 2297 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2298 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2299 "unknown path metric algorithm: 0x%x\n", 2300 meshconf->conf_pmetid); 2301 return 1; 2302 } 2303 if (meshconf->conf_ccid != 0) { 2304 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2305 "unknown congestion control algorithm: 0x%x\n", 2306 meshconf->conf_ccid); 2307 return 1; 2308 } 2309 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2310 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2311 "unknown sync algorithm: 0x%x\n", 2312 meshconf->conf_syncid); 2313 return 1; 2314 } 2315 if (meshconf->conf_authid != 0) { 2316 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2317 "unknown auth auth algorithm: 0x%x\n", 2318 meshconf->conf_pselid); 2319 return 1; 2320 } 2321 /* NB: conf_cap is only read correctly here */ 2322 cap = LE_READ_2(&meshconf->conf_cap); 2323 /* Not accepting peers */ 2324 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) { 2325 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2326 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2327 return 1; 2328 } 2329 return 0; 2330 } 2331 2332 static int 2333 mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2334 const uint8_t *ie) 2335 { 2336 const struct ieee80211_meshpeer_ie *meshpeer = 2337 (const struct ieee80211_meshpeer_ie *) ie; 2338 2339 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2340 meshpeer->peer_len > 10) 2341 return 1; 2342 switch (subtype) { 2343 case IEEE80211_MESH_PEER_LINK_OPEN: 2344 if (meshpeer->peer_len != 6) 2345 return 1; 2346 break; 2347 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2348 if (meshpeer->peer_len != 8) 2349 return 1; 2350 break; 2351 case IEEE80211_MESH_PEER_LINK_CLOSE: 2352 if (meshpeer->peer_len < 8) 2353 return 1; 2354 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2355 return 1; 2356 if (meshpeer->peer_rcode == 0) 2357 return 1; 2358 break; 2359 } 2360 return 0; 2361 } 2362 2363 /* 2364 * Add a Mesh ID IE to a frame. 2365 */ 2366 uint8_t * 2367 ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2368 { 2369 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2370 2371 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2372 2373 *frm++ = IEEE80211_ELEMID_MESHID; 2374 *frm++ = ms->ms_idlen; 2375 memcpy(frm, ms->ms_id, ms->ms_idlen); 2376 return frm + ms->ms_idlen; 2377 } 2378 2379 /* 2380 * Add a Mesh Configuration IE to a frame. 2381 * For now just use HWMP routing, Airtime link metric, Null Congestion 2382 * Signaling, Null Sync Protocol and Null Authentication. 2383 */ 2384 uint8_t * 2385 ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2386 { 2387 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2388 uint16_t caps; 2389 2390 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2391 2392 *frm++ = IEEE80211_ELEMID_MESHCONF; 2393 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2394 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2395 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2396 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2397 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2398 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2399 /* NB: set the number of neighbors before the rest */ 2400 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2401 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2402 *frm |= IEEE80211_MESHCONF_FORM_MP; 2403 frm += 1; 2404 caps = 0; 2405 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2406 caps |= IEEE80211_MESHCONF_CAP_AP; 2407 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2408 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2409 ADDSHORT(frm, caps); 2410 return frm; 2411 } 2412 2413 /* 2414 * Add a Mesh Peer Management IE to a frame. 2415 */ 2416 uint8_t * 2417 ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2418 uint16_t peerid, uint16_t reason) 2419 { 2420 /* XXX change for AH */ 2421 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2422 2423 KASSERT(localid != 0, ("localid == 0")); 2424 2425 *frm++ = IEEE80211_ELEMID_MESHPEER; 2426 switch (subtype) { 2427 case IEEE80211_MESH_PEER_LINK_OPEN: 2428 *frm++ = 6; /* length */ 2429 memcpy(frm, meshpeerproto, 4); 2430 frm += 4; 2431 ADDSHORT(frm, localid); /* local ID */ 2432 break; 2433 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2434 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2435 *frm++ = 8; /* length */ 2436 memcpy(frm, meshpeerproto, 4); 2437 frm += 4; 2438 ADDSHORT(frm, localid); /* local ID */ 2439 ADDSHORT(frm, peerid); /* peer ID */ 2440 break; 2441 case IEEE80211_MESH_PEER_LINK_CLOSE: 2442 if (peerid) 2443 *frm++ = 10; /* length */ 2444 else 2445 *frm++ = 8; /* length */ 2446 memcpy(frm, meshpeerproto, 4); 2447 frm += 4; 2448 ADDSHORT(frm, localid); /* local ID */ 2449 if (peerid) 2450 ADDSHORT(frm, peerid); /* peer ID */ 2451 ADDSHORT(frm, reason); 2452 break; 2453 } 2454 return frm; 2455 } 2456 2457 /* 2458 * Compute an Airtime Link Metric for the link with this node. 2459 * 2460 * Based on Draft 3.0 spec (11B.10, p.149). 2461 */ 2462 /* 2463 * Max 802.11s overhead. 2464 */ 2465 #define IEEE80211_MESH_MAXOVERHEAD \ 2466 (sizeof(struct ieee80211_qosframe_addr4) \ 2467 + sizeof(struct ieee80211_meshcntl_ae11) \ 2468 + sizeof(struct llc) \ 2469 + IEEE80211_ADDR_LEN \ 2470 + IEEE80211_WEP_IVLEN \ 2471 + IEEE80211_WEP_KIDLEN \ 2472 + IEEE80211_WEP_CRCLEN \ 2473 + IEEE80211_WEP_MICLEN \ 2474 + IEEE80211_CRC_LEN) 2475 uint32_t 2476 mesh_airtime_calc(struct ieee80211_node *ni) 2477 { 2478 #define M_BITS 8 2479 #define S_FACTOR (2 * M_BITS) 2480 struct ieee80211com *ic = ni->ni_ic; 2481 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2482 const static int nbits = 8192 << M_BITS; 2483 uint32_t overhead, rate, errrate; 2484 uint64_t res; 2485 2486 /* Time to transmit a frame */ 2487 rate = ni->ni_txrate; 2488 overhead = ieee80211_compute_duration(ic->ic_rt, 2489 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2490 /* Error rate in percentage */ 2491 /* XXX assuming small failures are ok */ 2492 errrate = (((ifp->if_oerrors + 2493 ifp->if_ierrors) / 100) << M_BITS) / 100; 2494 res = (overhead + (nbits / rate)) * 2495 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2496 2497 return (uint32_t)(res >> S_FACTOR); 2498 #undef M_BITS 2499 #undef S_FACTOR 2500 } 2501 2502 /* 2503 * Add a Mesh Link Metric report IE to a frame. 2504 */ 2505 uint8_t * 2506 ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2507 { 2508 *frm++ = IEEE80211_ELEMID_MESHLINK; 2509 *frm++ = 4; 2510 ADDWORD(frm, metric); 2511 return frm; 2512 } 2513 #undef ADDSHORT 2514 #undef ADDWORD 2515 2516 /* 2517 * Initialize any mesh-specific node state. 2518 */ 2519 void 2520 ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2521 { 2522 ni->ni_flags |= IEEE80211_NODE_QOS; 2523 callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 2524 } 2525 2526 /* 2527 * Cleanup any mesh-specific node state. 2528 */ 2529 void 2530 ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2531 { 2532 struct ieee80211vap *vap = ni->ni_vap; 2533 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2534 2535 callout_drain(&ni->ni_mltimer); 2536 /* NB: short-circuit callbacks after mesh_vdetach */ 2537 if (vap->iv_mesh != NULL) 2538 ms->ms_ppath->mpp_peerdown(ni); 2539 } 2540 2541 void 2542 ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2543 { 2544 ni->ni_meshidlen = ie[1]; 2545 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2546 } 2547 2548 /* 2549 * Setup mesh-specific node state on neighbor discovery. 2550 */ 2551 void 2552 ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2553 const struct ieee80211_frame *wh, 2554 const struct ieee80211_scanparams *sp) 2555 { 2556 ieee80211_parse_meshid(ni, sp->meshid); 2557 } 2558 2559 void 2560 ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2561 struct ieee80211_beacon_offsets *bo) 2562 { 2563 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2564 2565 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2566 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2567 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2568 } 2569 } 2570 2571 static int 2572 mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2573 { 2574 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2575 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2576 struct ieee80211_mesh_route *rt; 2577 struct ieee80211req_mesh_route *imr; 2578 size_t len, off; 2579 uint8_t *p; 2580 int error; 2581 2582 if (vap->iv_opmode != IEEE80211_M_MBSS) 2583 return ENOSYS; 2584 2585 error = 0; 2586 switch (ireq->i_type) { 2587 case IEEE80211_IOC_MESH_ID: 2588 ireq->i_len = ms->ms_idlen; 2589 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2590 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2591 break; 2592 case IEEE80211_IOC_MESH_AP: 2593 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2594 break; 2595 case IEEE80211_IOC_MESH_FWRD: 2596 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2597 break; 2598 case IEEE80211_IOC_MESH_TTL: 2599 ireq->i_val = ms->ms_ttl; 2600 break; 2601 case IEEE80211_IOC_MESH_RTCMD: 2602 switch (ireq->i_val) { 2603 case IEEE80211_MESH_RTCMD_LIST: 2604 len = 0; 2605 MESH_RT_LOCK(ms); 2606 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2607 len += sizeof(*imr); 2608 } 2609 MESH_RT_UNLOCK(ms); 2610 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2611 ireq->i_len = len; 2612 return ENOMEM; 2613 } 2614 ireq->i_len = len; 2615 /* XXX M_WAIT? */ 2616 p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 2617 if (p == NULL) 2618 return ENOMEM; 2619 off = 0; 2620 MESH_RT_LOCK(ms); 2621 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2622 if (off >= len) 2623 break; 2624 imr = (struct ieee80211req_mesh_route *) 2625 (p + off); 2626 imr->imr_flags = rt->rt_flags; 2627 IEEE80211_ADDR_COPY(imr->imr_dest, 2628 rt->rt_dest); 2629 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2630 rt->rt_nexthop); 2631 imr->imr_metric = rt->rt_metric; 2632 imr->imr_nhops = rt->rt_nhops; 2633 imr->imr_lifetime = rt->rt_lifetime; 2634 imr->imr_lastmseq = rt->rt_lastmseq; 2635 off += sizeof(*imr); 2636 } 2637 MESH_RT_UNLOCK(ms); 2638 error = copyout(p, (uint8_t *)ireq->i_data, 2639 ireq->i_len); 2640 free(p, M_TEMP); 2641 break; 2642 case IEEE80211_MESH_RTCMD_FLUSH: 2643 case IEEE80211_MESH_RTCMD_ADD: 2644 case IEEE80211_MESH_RTCMD_DELETE: 2645 return EINVAL; 2646 default: 2647 return ENOSYS; 2648 } 2649 break; 2650 case IEEE80211_IOC_MESH_PR_METRIC: 2651 len = strlen(ms->ms_pmetric->mpm_descr); 2652 if (ireq->i_len < len) 2653 return EINVAL; 2654 ireq->i_len = len; 2655 error = copyout(ms->ms_pmetric->mpm_descr, 2656 (uint8_t *)ireq->i_data, len); 2657 break; 2658 case IEEE80211_IOC_MESH_PR_PATH: 2659 len = strlen(ms->ms_ppath->mpp_descr); 2660 if (ireq->i_len < len) 2661 return EINVAL; 2662 ireq->i_len = len; 2663 error = copyout(ms->ms_ppath->mpp_descr, 2664 (uint8_t *)ireq->i_data, len); 2665 break; 2666 default: 2667 return ENOSYS; 2668 } 2669 2670 return error; 2671 } 2672 IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2673 2674 static int 2675 mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2676 { 2677 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2678 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2679 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2680 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2681 int error; 2682 2683 if (vap->iv_opmode != IEEE80211_M_MBSS) 2684 return ENOSYS; 2685 2686 error = 0; 2687 switch (ireq->i_type) { 2688 case IEEE80211_IOC_MESH_ID: 2689 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2690 return EINVAL; 2691 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2692 if (error != 0) 2693 break; 2694 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2695 ms->ms_idlen = ireq->i_len; 2696 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2697 error = ENETRESET; 2698 break; 2699 case IEEE80211_IOC_MESH_AP: 2700 if (ireq->i_val) 2701 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2702 else 2703 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2704 error = ENETRESET; 2705 break; 2706 case IEEE80211_IOC_MESH_FWRD: 2707 if (ireq->i_val) 2708 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2709 else 2710 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2711 break; 2712 case IEEE80211_IOC_MESH_TTL: 2713 ms->ms_ttl = (uint8_t) ireq->i_val; 2714 break; 2715 case IEEE80211_IOC_MESH_RTCMD: 2716 switch (ireq->i_val) { 2717 case IEEE80211_MESH_RTCMD_LIST: 2718 return EINVAL; 2719 case IEEE80211_MESH_RTCMD_FLUSH: 2720 ieee80211_mesh_rt_flush(vap); 2721 break; 2722 case IEEE80211_MESH_RTCMD_ADD: 2723 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2724 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2725 return EINVAL; 2726 error = copyin(ireq->i_data, &tmpaddr, 2727 IEEE80211_ADDR_LEN); 2728 if (error == 0) 2729 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2730 break; 2731 case IEEE80211_MESH_RTCMD_DELETE: 2732 ieee80211_mesh_rt_del(vap, ireq->i_data); 2733 break; 2734 default: 2735 return ENOSYS; 2736 } 2737 break; 2738 case IEEE80211_IOC_MESH_PR_METRIC: 2739 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2740 if (error == 0) { 2741 error = mesh_select_proto_metric(vap, tmpproto); 2742 if (error == 0) 2743 error = ENETRESET; 2744 } 2745 break; 2746 case IEEE80211_IOC_MESH_PR_PATH: 2747 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2748 if (error == 0) { 2749 error = mesh_select_proto_path(vap, tmpproto); 2750 if (error == 0) 2751 error = ENETRESET; 2752 } 2753 break; 2754 default: 2755 return ENOSYS; 2756 } 2757 return error; 2758 } 2759 IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2760