1 /*- 2 * Copyright (c) 2009 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Rui Paulo under sponsorship from the 6 * FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: head/sys/net80211/ieee80211_mesh.c 203423 2010-02-03 10:12:49Z rpaulo $ 30 */ 31 32 /* 33 * IEEE 802.11s Mesh Point (MBSS) support. 34 * 35 * Based on March 2009, D3.0 802.11s draft spec. 36 */ 37 #include "opt_inet.h" 38 #include "opt_wlan.h" 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/mbuf.h> 43 #include <sys/malloc.h> 44 #include <sys/kernel.h> 45 46 #include <sys/socket.h> 47 #include <sys/sockio.h> 48 #include <sys/endian.h> 49 #include <sys/errno.h> 50 #include <sys/proc.h> 51 #include <sys/sysctl.h> 52 53 #include <net/if.h> 54 #include <net/if_media.h> 55 #include <net/if_llc.h> 56 #include <net/ethernet.h> 57 #include <net/route.h> 58 59 #include <netproto/802_11/ieee80211_var.h> 60 #include <netproto/802_11/ieee80211_action.h> 61 #include <netproto/802_11/ieee80211_input.h> 62 #include <netproto/802_11/ieee80211_mesh.h> 63 64 static void mesh_rt_flush_invalid(struct ieee80211vap *); 65 static int mesh_select_proto_path(struct ieee80211vap *, const char *); 66 static int mesh_select_proto_metric(struct ieee80211vap *, const char *); 67 static void mesh_vattach(struct ieee80211vap *); 68 static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); 69 static void mesh_rt_cleanup_callout(void *); 70 static void mesh_linkchange(struct ieee80211_node *, 71 enum ieee80211_mesh_mlstate); 72 static void mesh_checkid(void *, struct ieee80211_node *); 73 static uint32_t mesh_generateid(struct ieee80211vap *); 74 static int mesh_checkpseq(struct ieee80211vap *, 75 const uint8_t [IEEE80211_ADDR_LEN], uint32_t); 76 static struct ieee80211_node * 77 mesh_find_txnode(struct ieee80211vap *, 78 const uint8_t [IEEE80211_ADDR_LEN]); 79 static void mesh_forward(struct ieee80211vap *, struct mbuf *, 80 const struct ieee80211_meshcntl *); 81 static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int); 82 static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 83 int, int); 84 static void mesh_peer_timeout_setup(struct ieee80211_node *); 85 static void mesh_peer_timeout_backoff(struct ieee80211_node *); 86 static void mesh_peer_timeout_callout(void *); 87 static __inline void 88 mesh_peer_timeout_stop(struct ieee80211_node *); 89 static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 90 static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 91 static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 92 const uint8_t *); 93 uint32_t mesh_airtime_calc(struct ieee80211_node *); 94 95 /* 96 * Timeout values come from the specification and are in milliseconds. 97 */ 98 SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 99 "IEEE 802.11s parameters"); 100 static int ieee80211_mesh_retrytimeout = -1; 101 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 102 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 103 "Retry timeout (msec)"); 104 static int ieee80211_mesh_holdingtimeout = -1; 105 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 106 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 107 "Holding state timeout (msec)"); 108 static int ieee80211_mesh_confirmtimeout = -1; 109 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 110 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 111 "Confirm state timeout (msec)"); 112 static int ieee80211_mesh_maxretries = 2; 113 SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 114 &ieee80211_mesh_maxretries, 0, 115 "Maximum retries during peer link establishment"); 116 117 static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 118 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 119 120 static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 121 static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 122 static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 123 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req; 124 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep; 125 126 static ieee80211_send_action_func mesh_send_action_meshpeering_open; 127 static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 128 static ieee80211_send_action_func mesh_send_action_meshpeering_close; 129 static ieee80211_send_action_func mesh_send_action_meshlink_request; 130 static ieee80211_send_action_func mesh_send_action_meshlink_reply; 131 132 static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 133 .mpm_descr = "AIRTIME", 134 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 135 .mpm_metric = mesh_airtime_calc, 136 }; 137 138 static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 139 static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 140 141 MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 142 143 /* 144 * Helper functions to manipulate the Mesh routing table. 145 */ 146 147 static struct ieee80211_mesh_route * 148 mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 149 const uint8_t dest[IEEE80211_ADDR_LEN]) 150 { 151 struct ieee80211_mesh_route *rt; 152 153 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 154 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 155 return rt; 156 } 157 return NULL; 158 } 159 160 static struct ieee80211_mesh_route * 161 mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 162 const uint8_t dest[IEEE80211_ADDR_LEN]) 163 { 164 struct ieee80211_mesh_route *rt; 165 166 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 167 ("%s: adding broadcast to the routing table", __func__)); 168 169 rt = kmalloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 170 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_INTWAIT | M_ZERO); 171 if (rt != NULL) { 172 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 173 rt->rt_priv = (void *)ALIGN(&rt[1]); 174 rt->rt_crtime = ticks; 175 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 176 } 177 return rt; 178 } 179 180 struct ieee80211_mesh_route * 181 ieee80211_mesh_rt_find(struct ieee80211vap *vap, 182 const uint8_t dest[IEEE80211_ADDR_LEN]) 183 { 184 struct ieee80211_mesh_state *ms = vap->iv_mesh; 185 struct ieee80211_mesh_route *rt; 186 187 rt = mesh_rt_find_locked(ms, dest); 188 return rt; 189 } 190 191 struct ieee80211_mesh_route * 192 ieee80211_mesh_rt_add(struct ieee80211vap *vap, 193 const uint8_t dest[IEEE80211_ADDR_LEN]) 194 { 195 struct ieee80211_mesh_state *ms = vap->iv_mesh; 196 struct ieee80211_mesh_route *rt; 197 198 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 199 ("%s: duplicate entry in the routing table", __func__)); 200 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 201 ("%s: adding self to the routing table", __func__)); 202 203 rt = mesh_rt_add_locked(ms, dest); 204 return rt; 205 } 206 207 /* 208 * Add a proxy route (as needed) for the specified destination. 209 */ 210 void 211 ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 212 const uint8_t dest[IEEE80211_ADDR_LEN]) 213 { 214 struct ieee80211_mesh_state *ms = vap->iv_mesh; 215 struct ieee80211_mesh_route *rt; 216 217 rt = mesh_rt_find_locked(ms, dest); 218 if (rt == NULL) { 219 rt = mesh_rt_add_locked(ms, dest); 220 if (rt == NULL) { 221 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 222 "%s", "unable to add proxy entry"); 223 vap->iv_stats.is_mesh_rtaddfailed++; 224 } else { 225 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 226 "%s", "add proxy entry"); 227 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 228 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 229 | IEEE80211_MESHRT_FLAGS_PROXY; 230 } 231 /* XXX assert PROXY? */ 232 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 233 struct ieee80211com *ic = vap->iv_ic; 234 /* 235 * Fix existing entry created by received frames from 236 * stations that have some memory of dest. We also 237 * flush any frames held on the staging queue; delivering 238 * them is too much trouble right now. 239 */ 240 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 241 "%s", "fix 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 /* XXX belongs in hwmp */ 246 ieee80211_ageq_drain_node(&ic->ic_stageq, 247 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 248 /* XXX stat? */ 249 } 250 } 251 252 static __inline void 253 mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 254 { 255 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 256 kfree(rt, M_80211_MESH_RT); 257 } 258 259 void 260 ieee80211_mesh_rt_del(struct ieee80211vap *vap, 261 const uint8_t dest[IEEE80211_ADDR_LEN]) 262 { 263 struct ieee80211_mesh_state *ms = vap->iv_mesh; 264 struct ieee80211_mesh_route *rt, *next; 265 266 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) { 267 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 268 mesh_rt_del(ms, rt); 269 return; 270 } 271 } 272 } 273 274 void 275 ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 276 { 277 struct ieee80211_mesh_state *ms = vap->iv_mesh; 278 struct ieee80211_mesh_route *rt, *next; 279 280 if (ms == NULL) 281 return; 282 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) 283 mesh_rt_del(ms, rt); 284 } 285 286 void 287 ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 288 const uint8_t peer[IEEE80211_ADDR_LEN]) 289 { 290 struct ieee80211_mesh_state *ms = vap->iv_mesh; 291 struct ieee80211_mesh_route *rt, *next; 292 293 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) { 294 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 295 mesh_rt_del(ms, rt); 296 } 297 } 298 299 /* 300 * Flush expired routing entries, i.e. those in invalid state for 301 * some time. 302 */ 303 static void 304 mesh_rt_flush_invalid(struct ieee80211vap *vap) 305 { 306 struct ieee80211_mesh_state *ms = vap->iv_mesh; 307 struct ieee80211_mesh_route *rt, *next; 308 309 if (ms == NULL) 310 return; 311 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) { 312 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 313 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 314 mesh_rt_del(ms, rt); 315 } 316 } 317 318 int 319 ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 320 { 321 int i, firstempty = -1; 322 323 for (i = 0; i < NELEM(mesh_proto_paths); i++) { 324 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 325 IEEE80211_MESH_PROTO_DSZ) == 0) 326 return EEXIST; 327 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 328 firstempty = i; 329 } 330 if (firstempty < 0) 331 return ENOSPC; 332 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 333 mesh_proto_paths[firstempty].mpp_active = 1; 334 return 0; 335 } 336 337 int 338 ieee80211_mesh_register_proto_metric(const struct 339 ieee80211_mesh_proto_metric *mpm) 340 { 341 int i, firstempty = -1; 342 343 for (i = 0; i < NELEM(mesh_proto_metrics); i++) { 344 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 345 IEEE80211_MESH_PROTO_DSZ) == 0) 346 return EEXIST; 347 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 348 firstempty = i; 349 } 350 if (firstempty < 0) 351 return ENOSPC; 352 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 353 mesh_proto_metrics[firstempty].mpm_active = 1; 354 return 0; 355 } 356 357 static int 358 mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 359 { 360 struct ieee80211_mesh_state *ms = vap->iv_mesh; 361 int i; 362 363 for (i = 0; i < NELEM(mesh_proto_paths); i++) { 364 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 365 ms->ms_ppath = &mesh_proto_paths[i]; 366 return 0; 367 } 368 } 369 return ENOENT; 370 } 371 372 static int 373 mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 374 { 375 struct ieee80211_mesh_state *ms = vap->iv_mesh; 376 int i; 377 378 for (i = 0; i < NELEM(mesh_proto_metrics); i++) { 379 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 380 ms->ms_pmetric = &mesh_proto_metrics[i]; 381 return 0; 382 } 383 } 384 return ENOENT; 385 } 386 387 static void 388 ieee80211_mesh_init(void) 389 { 390 391 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 392 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 393 394 /* 395 * Setup mesh parameters that depends on the clock frequency. 396 */ 397 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 398 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 399 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 400 401 /* 402 * Register action frame handlers. 403 */ 404 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 405 IEEE80211_ACTION_MESHPEERING_OPEN, 406 mesh_recv_action_meshpeering_open); 407 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 408 IEEE80211_ACTION_MESHPEERING_CONFIRM, 409 mesh_recv_action_meshpeering_confirm); 410 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 411 IEEE80211_ACTION_MESHPEERING_CLOSE, 412 mesh_recv_action_meshpeering_close); 413 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 414 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 415 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 416 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 417 418 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 419 IEEE80211_ACTION_MESHPEERING_OPEN, 420 mesh_send_action_meshpeering_open); 421 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 422 IEEE80211_ACTION_MESHPEERING_CONFIRM, 423 mesh_send_action_meshpeering_confirm); 424 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 425 IEEE80211_ACTION_MESHPEERING_CLOSE, 426 mesh_send_action_meshpeering_close); 427 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 428 IEEE80211_ACTION_MESHLMETRIC_REQ, 429 mesh_send_action_meshlink_request); 430 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 431 IEEE80211_ACTION_MESHLMETRIC_REP, 432 mesh_send_action_meshlink_reply); 433 434 /* 435 * Register Airtime Link Metric. 436 */ 437 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 438 439 } 440 SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 441 442 void 443 ieee80211_mesh_attach(struct ieee80211com *ic) 444 { 445 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 446 } 447 448 void 449 ieee80211_mesh_detach(struct ieee80211com *ic) 450 { 451 } 452 453 static void 454 mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 455 { 456 struct ieee80211com *ic = ni->ni_ic; 457 uint16_t args[3]; 458 459 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 460 args[0] = ni->ni_mlpid; 461 args[1] = ni->ni_mllid; 462 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 463 ieee80211_send_action(ni, 464 IEEE80211_ACTION_CAT_MESHPEERING, 465 IEEE80211_ACTION_MESHPEERING_CLOSE, 466 args); 467 } 468 callout_stop(&ni->ni_mltimer); 469 /* XXX belongs in hwmp */ 470 ieee80211_ageq_drain_node(&ic->ic_stageq, 471 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 472 } 473 474 static void 475 mesh_vdetach(struct ieee80211vap *vap) 476 { 477 struct ieee80211_mesh_state *ms = vap->iv_mesh; 478 479 callout_stop(&ms->ms_cleantimer); 480 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 481 NULL); 482 ieee80211_mesh_rt_flush(vap); 483 ms->ms_ppath->mpp_vdetach(vap); 484 kfree(vap->iv_mesh, M_80211_VAP); 485 vap->iv_mesh = NULL; 486 } 487 488 static void 489 mesh_vattach(struct ieee80211vap *vap) 490 { 491 struct ieee80211_mesh_state *ms; 492 vap->iv_newstate = mesh_newstate; 493 vap->iv_input = mesh_input; 494 vap->iv_opdetach = mesh_vdetach; 495 vap->iv_recv_mgmt = mesh_recv_mgmt; 496 ms = kmalloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 497 M_INTWAIT | M_ZERO); 498 vap->iv_mesh = ms; 499 ms->ms_seq = 0; 500 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 501 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 502 TAILQ_INIT(&ms->ms_routes); 503 callout_init_mp(&ms->ms_cleantimer); 504 mesh_select_proto_metric(vap, "AIRTIME"); 505 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 506 mesh_select_proto_path(vap, "HWMP"); 507 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 508 ms->ms_ppath->mpp_vattach(vap); 509 } 510 511 /* 512 * IEEE80211_M_MBSS vap state machine handler. 513 */ 514 static int 515 mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 516 { 517 struct ieee80211_mesh_state *ms = vap->iv_mesh; 518 struct ieee80211com *ic = vap->iv_ic; 519 struct ieee80211_node *ni; 520 enum ieee80211_state ostate; 521 522 ostate = vap->iv_state; 523 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 524 __func__, ieee80211_state_name[ostate], 525 ieee80211_state_name[nstate], arg); 526 vap->iv_state = nstate; /* state transition */ 527 if (ostate != IEEE80211_S_SCAN) 528 ieee80211_cancel_scan(vap); /* background scan */ 529 ni = vap->iv_bss; /* NB: no reference held */ 530 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 531 callout_stop(&ms->ms_cleantimer); 532 switch (nstate) { 533 case IEEE80211_S_INIT: 534 switch (ostate) { 535 case IEEE80211_S_SCAN: 536 ieee80211_cancel_scan(vap); 537 break; 538 case IEEE80211_S_CAC: 539 ieee80211_dfs_cac_stop(vap); 540 break; 541 case IEEE80211_S_RUN: 542 ieee80211_iterate_nodes(&ic->ic_sta, 543 mesh_vdetach_peers, NULL); 544 break; 545 default: 546 break; 547 } 548 if (ostate != IEEE80211_S_INIT) { 549 /* NB: optimize INIT -> INIT case */ 550 ieee80211_reset_bss(vap); 551 ieee80211_mesh_rt_flush(vap); 552 } 553 break; 554 case IEEE80211_S_SCAN: 555 switch (ostate) { 556 case IEEE80211_S_INIT: 557 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 558 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 559 ms->ms_idlen != 0) { 560 /* 561 * Already have a channel and a mesh ID; bypass 562 * the scan and startup immediately. 563 */ 564 ieee80211_create_ibss(vap, vap->iv_des_chan); 565 break; 566 } 567 /* 568 * Initiate a scan. We can come here as a result 569 * of an IEEE80211_IOC_SCAN_REQ too in which case 570 * the vap will be marked with IEEE80211_FEXT_SCANREQ 571 * and the scan request parameters will be present 572 * in iv_scanreq. Otherwise we do the default. 573 */ 574 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 575 ieee80211_check_scan(vap, 576 vap->iv_scanreq_flags, 577 vap->iv_scanreq_duration, 578 vap->iv_scanreq_mindwell, 579 vap->iv_scanreq_maxdwell, 580 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 581 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 582 } else 583 ieee80211_check_scan_current(vap); 584 break; 585 default: 586 break; 587 } 588 break; 589 case IEEE80211_S_CAC: 590 /* 591 * Start CAC on a DFS channel. We come here when starting 592 * a bss on a DFS channel (see ieee80211_create_ibss). 593 */ 594 ieee80211_dfs_cac_start(vap); 595 break; 596 case IEEE80211_S_RUN: 597 switch (ostate) { 598 case IEEE80211_S_INIT: 599 /* 600 * Already have a channel; bypass the 601 * scan and startup immediately. 602 * Note that ieee80211_create_ibss will call 603 * back to do a RUN->RUN state change. 604 */ 605 ieee80211_create_ibss(vap, 606 ieee80211_ht_adjust_channel(ic, 607 ic->ic_curchan, vap->iv_flags_ht)); 608 /* NB: iv_bss is changed on return */ 609 break; 610 case IEEE80211_S_CAC: 611 /* 612 * NB: This is the normal state change when CAC 613 * expires and no radar was detected; no need to 614 * clear the CAC timer as it's already expired. 615 */ 616 /* fall thru... */ 617 case IEEE80211_S_CSA: 618 #if 0 619 /* 620 * Shorten inactivity timer of associated stations 621 * to weed out sta's that don't follow a CSA. 622 */ 623 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 624 #endif 625 /* 626 * Update bss node channel to reflect where 627 * we landed after CSA. 628 */ 629 ieee80211_node_set_chan(vap->iv_bss, 630 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 631 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 632 /* XXX bypass debug msgs */ 633 break; 634 case IEEE80211_S_SCAN: 635 case IEEE80211_S_RUN: 636 #ifdef IEEE80211_DEBUG 637 if (ieee80211_msg_debug(vap)) { 638 struct ieee80211_node *ni = vap->iv_bss; 639 ieee80211_note(vap, 640 "synchronized with %6D meshid ", 641 ni->ni_meshid, ":"); 642 ieee80211_print_essid(ni->ni_meshid, 643 ni->ni_meshidlen); 644 /* XXX MCS/HT */ 645 kprintf(" channel %d\n", 646 ieee80211_chan2ieee(ic, ic->ic_curchan)); 647 } 648 #endif 649 break; 650 default: 651 break; 652 } 653 ieee80211_node_authorize(vap->iv_bss); 654 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 655 mesh_rt_cleanup_callout, vap); 656 break; 657 default: 658 break; 659 } 660 /* NB: ostate not nstate */ 661 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 662 return 0; 663 } 664 665 static void 666 mesh_rt_cleanup_callout(void *arg) 667 { 668 struct ieee80211vap *vap = arg; 669 struct ieee80211_mesh_state *ms = vap->iv_mesh; 670 671 wlan_serialize_enter(); 672 mesh_rt_flush_invalid(vap); 673 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 674 mesh_rt_cleanup_callout, vap); 675 wlan_serialize_exit(); 676 } 677 678 679 /* 680 * Helper function to note the Mesh Peer Link FSM change. 681 */ 682 static void 683 mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 684 { 685 struct ieee80211vap *vap = ni->ni_vap; 686 struct ieee80211_mesh_state *ms = vap->iv_mesh; 687 #ifdef IEEE80211_DEBUG 688 static const char *meshlinkstates[] = { 689 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 690 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 691 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 692 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 693 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 694 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 695 }; 696 #endif 697 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 698 ni, "peer link: %s -> %s", 699 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 700 701 /* track neighbor count */ 702 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 703 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 704 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 705 ms->ms_neighbors++; 706 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 707 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 708 state != IEEE80211_NODE_MESH_ESTABLISHED) { 709 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 710 ms->ms_neighbors--; 711 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 712 } 713 ni->ni_mlstate = state; 714 switch (state) { 715 case IEEE80211_NODE_MESH_HOLDING: 716 ms->ms_ppath->mpp_peerdown(ni); 717 break; 718 case IEEE80211_NODE_MESH_ESTABLISHED: 719 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 720 break; 721 default: 722 break; 723 } 724 } 725 726 /* 727 * Helper function to generate a unique local ID required for mesh 728 * peer establishment. 729 */ 730 static void 731 mesh_checkid(void *arg, struct ieee80211_node *ni) 732 { 733 uint16_t *r = arg; 734 735 if (*r == ni->ni_mllid) 736 *(uint16_t *)arg = 0; 737 } 738 739 static uint32_t 740 mesh_generateid(struct ieee80211vap *vap) 741 { 742 int maxiter = 4; 743 uint16_t r; 744 745 do { 746 get_random_bytes(&r, 2); 747 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 748 maxiter--; 749 } while (r == 0 && maxiter > 0); 750 return r; 751 } 752 753 /* 754 * Verifies if we already received this packet by checking its 755 * sequence number. 756 * Returns 0 if the frame is to be accepted, 1 otherwise. 757 */ 758 static int 759 mesh_checkpseq(struct ieee80211vap *vap, 760 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 761 { 762 struct ieee80211_mesh_route *rt; 763 764 rt = ieee80211_mesh_rt_find(vap, source); 765 if (rt == NULL) { 766 rt = ieee80211_mesh_rt_add(vap, source); 767 if (rt == NULL) { 768 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 769 "%s", "add mcast route failed"); 770 vap->iv_stats.is_mesh_rtaddfailed++; 771 return 1; 772 } 773 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 774 "add mcast route, mesh seqno %d", seq); 775 rt->rt_lastmseq = seq; 776 return 0; 777 } 778 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 779 return 1; 780 } else { 781 rt->rt_lastmseq = seq; 782 return 0; 783 } 784 } 785 786 /* 787 * Iterate the routing table and locate the next hop. 788 */ 789 static struct ieee80211_node * 790 mesh_find_txnode(struct ieee80211vap *vap, 791 const uint8_t dest[IEEE80211_ADDR_LEN]) 792 { 793 struct ieee80211_mesh_route *rt; 794 795 rt = ieee80211_mesh_rt_find(vap, dest); 796 if (rt == NULL) 797 return NULL; 798 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 799 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 800 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 801 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 802 /* XXX stat */ 803 return NULL; 804 } 805 return ieee80211_find_txnode(vap, rt->rt_nexthop); 806 } 807 808 /* 809 * Forward the specified frame. 810 * Decrement the TTL and set TA to our MAC address. 811 */ 812 static void 813 mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 814 const struct ieee80211_meshcntl *mc) 815 { 816 struct ieee80211com *ic = vap->iv_ic; 817 struct ieee80211_mesh_state *ms = vap->iv_mesh; 818 struct ifnet *ifp = vap->iv_ifp; 819 struct ifnet *parent = ic->ic_ifp; 820 const struct ieee80211_frame *wh = 821 mtod(m, const struct ieee80211_frame *); 822 struct mbuf *mcopy; 823 struct ieee80211_meshcntl *mccopy; 824 struct ieee80211_frame *whcopy; 825 struct ieee80211_node *ni; 826 int err; 827 828 if (mc->mc_ttl == 0) { 829 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 830 "%s", "frame not fwd'd, ttl 0"); 831 vap->iv_stats.is_mesh_fwd_ttl++; 832 return; 833 } 834 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 835 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 836 "%s", "frame not fwd'd, fwding disabled"); 837 vap->iv_stats.is_mesh_fwd_disabled++; 838 return; 839 } 840 mcopy = m_dup(m, MB_DONTWAIT); 841 if (mcopy == NULL) { 842 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 843 "%s", "frame not fwd'd, cannot dup"); 844 vap->iv_stats.is_mesh_fwd_nobuf++; 845 ifp->if_oerrors++; 846 return; 847 } 848 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 849 sizeof(struct ieee80211_meshcntl)); 850 if (mcopy == NULL) { 851 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 852 "%s", "frame not fwd'd, too short"); 853 vap->iv_stats.is_mesh_fwd_tooshort++; 854 ifp->if_oerrors++; 855 m_freem(mcopy); 856 return; 857 } 858 whcopy = mtod(mcopy, struct ieee80211_frame *); 859 mccopy = (struct ieee80211_meshcntl *) 860 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 861 /* XXX clear other bits? */ 862 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 863 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 864 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 865 ni = ieee80211_ref_node(vap->iv_bss); 866 mcopy->m_flags |= M_MCAST; 867 } else { 868 ni = mesh_find_txnode(vap, whcopy->i_addr3); 869 if (ni == NULL) { 870 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 871 "%s", "frame not fwd'd, no path"); 872 vap->iv_stats.is_mesh_fwd_nopath++; 873 m_freem(mcopy); 874 return; 875 } 876 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 877 } 878 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 879 mccopy->mc_ttl--; 880 881 /* XXX calculate priority so drivers can find the tx queue */ 882 M_WME_SETAC(mcopy, WME_AC_BE); 883 884 /* XXX do we know m_nextpkt is NULL? */ 885 mcopy->m_pkthdr.rcvif = (void *) ni; 886 err = ieee80211_handoff(parent, mcopy); 887 if (err != 0) { 888 /* NB: IFQ_HANDOFF reclaims mbuf */ 889 ieee80211_free_node(ni); 890 } else { 891 ifp->if_opackets++; 892 } 893 } 894 895 static struct mbuf * 896 mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 897 { 898 #define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 899 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 900 sizeof(struct ieee80211_meshcntl_ae11)]; 901 const struct ieee80211_qosframe_addr4 *wh; 902 const struct ieee80211_meshcntl_ae10 *mc; 903 struct ether_header *eh; 904 struct llc *llc; 905 int ae; 906 907 if (m->m_len < hdrlen + sizeof(*llc) && 908 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 909 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 910 "discard data frame: %s", "m_pullup failed"); 911 vap->iv_stats.is_rx_tooshort++; 912 return NULL; 913 } 914 memcpy(b, mtod(m, caddr_t), hdrlen); 915 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 916 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 917 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 918 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 919 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 920 921 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 922 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 923 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 924 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 925 !(llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 926 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 927 llc = NULL; 928 } else { 929 m_adj(m, hdrlen - sizeof(*eh)); 930 } 931 eh = mtod(m, struct ether_header *); 932 ae = mc->mc_flags & 3; 933 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 934 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 935 if (ae == 0) { 936 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 937 } else if (ae == 1) { 938 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 939 } else { 940 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 941 (const struct ieee80211_frame *)wh, NULL, 942 "bad AE %d", ae); 943 vap->iv_stats.is_mesh_badae++; 944 m_freem(m); 945 return NULL; 946 } 947 } else { 948 if (ae == 0) { 949 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 950 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 951 } else if (ae == 2) { 952 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 953 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 954 } else { 955 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 956 (const struct ieee80211_frame *)wh, NULL, 957 "bad AE %d", ae); 958 vap->iv_stats.is_mesh_badae++; 959 m_freem(m); 960 return NULL; 961 } 962 } 963 #ifdef ALIGNED_POINTER 964 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 965 m = ieee80211_realign(vap, m, sizeof(*eh)); 966 if (m == NULL) 967 return NULL; 968 } 969 #endif /* ALIGNED_POINTER */ 970 if (llc != NULL) { 971 eh = mtod(m, struct ether_header *); 972 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 973 } 974 return m; 975 #undef WDIR 976 } 977 978 /* 979 * Return non-zero if the unicast mesh data frame should be processed 980 * locally. Frames that are not proxy'd have our address, otherwise 981 * we need to consult the routing table to look for a proxy entry. 982 */ 983 static __inline int 984 mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 985 const struct ieee80211_meshcntl *mc) 986 { 987 int ae = mc->mc_flags & 3; 988 989 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 990 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 991 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 992 if (ae == 2) { /* ucast w/ proxy */ 993 const struct ieee80211_meshcntl_ae10 *mc10 = 994 (const struct ieee80211_meshcntl_ae10 *) mc; 995 struct ieee80211_mesh_route *rt = 996 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 997 /* check for proxy route to ourself */ 998 return (rt != NULL && 999 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1000 } else /* ucast w/o proxy */ 1001 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1002 } 1003 1004 static int 1005 mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1006 { 1007 #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1008 #define HAS_SEQ(type) ((type & 0x4) == 0) 1009 struct ieee80211vap *vap = ni->ni_vap; 1010 struct ieee80211com *ic = ni->ni_ic; 1011 struct ifnet *ifp = vap->iv_ifp; 1012 struct ieee80211_frame *wh; 1013 const struct ieee80211_meshcntl *mc; 1014 int hdrspace, meshdrlen, need_tap; 1015 uint8_t dir, type, subtype, qos; 1016 uint32_t seq; 1017 uint8_t *addr; 1018 ieee80211_seq rxseq; 1019 1020 KASSERT(ni != NULL, ("null node")); 1021 ni->ni_inact = ni->ni_inact_reload; 1022 1023 need_tap = 1; /* mbuf need to be tapped. */ 1024 type = -1; /* undefined */ 1025 1026 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1027 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1028 ni->ni_macaddr, NULL, 1029 "too short (1): len %u", m->m_pkthdr.len); 1030 vap->iv_stats.is_rx_tooshort++; 1031 goto out; 1032 } 1033 /* 1034 * Bit of a cheat here, we use a pointer for a 3-address 1035 * frame format but don't reference fields past outside 1036 * ieee80211_frame_min w/o first validating the data is 1037 * present. 1038 */ 1039 wh = mtod(m, struct ieee80211_frame *); 1040 1041 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1042 IEEE80211_FC0_VERSION_0) { 1043 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1044 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1045 vap->iv_stats.is_rx_badversion++; 1046 goto err; 1047 } 1048 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1049 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1050 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1051 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1052 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1053 ni->ni_noise = nf; 1054 if (HAS_SEQ(type)) { 1055 uint8_t tid = ieee80211_gettid(wh); 1056 1057 if (IEEE80211_QOS_HAS_SEQ(wh) && 1058 TID_TO_WME_AC(tid) >= WME_AC_VI) 1059 ic->ic_wme.wme_hipri_traffic++; 1060 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1061 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1062 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1063 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1064 /* duplicate, discard */ 1065 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1066 wh->i_addr1, "duplicate", 1067 "seqno <%u,%u> fragno <%u,%u> tid %u", 1068 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1069 ni->ni_rxseqs[tid] >> 1070 IEEE80211_SEQ_SEQ_SHIFT, 1071 rxseq & IEEE80211_SEQ_FRAG_MASK, 1072 ni->ni_rxseqs[tid] & 1073 IEEE80211_SEQ_FRAG_MASK, 1074 tid); 1075 vap->iv_stats.is_rx_dup++; 1076 IEEE80211_NODE_STAT(ni, rx_dup); 1077 goto out; 1078 } 1079 ni->ni_rxseqs[tid] = rxseq; 1080 } 1081 } 1082 #ifdef IEEE80211_DEBUG 1083 /* 1084 * It's easier, but too expensive, to simulate different mesh 1085 * topologies by consulting the ACL policy very early, so do this 1086 * only under DEBUG. 1087 * 1088 * NB: this check is also done upon peering link initiation. 1089 */ 1090 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1091 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1092 wh, NULL, "%s", "disallowed by ACL"); 1093 vap->iv_stats.is_rx_acl++; 1094 goto out; 1095 } 1096 #endif 1097 switch (type) { 1098 case IEEE80211_FC0_TYPE_DATA: 1099 if (ni == vap->iv_bss) 1100 goto out; 1101 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1102 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1103 ni->ni_macaddr, NULL, 1104 "peer link not yet established (%d)", 1105 ni->ni_mlstate); 1106 vap->iv_stats.is_mesh_nolink++; 1107 goto out; 1108 } 1109 if (dir != IEEE80211_FC1_DIR_FROMDS && 1110 dir != IEEE80211_FC1_DIR_DSTODS) { 1111 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1112 wh, "data", "incorrect dir 0x%x", dir); 1113 vap->iv_stats.is_rx_wrongdir++; 1114 goto err; 1115 } 1116 /* pull up enough to get to the mesh control */ 1117 hdrspace = ieee80211_hdrspace(ic, wh); 1118 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1119 (m = m_pullup(m, hdrspace + 1120 sizeof(struct ieee80211_meshcntl))) == NULL) { 1121 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1122 ni->ni_macaddr, NULL, 1123 "data too short: expecting %u", hdrspace); 1124 vap->iv_stats.is_rx_tooshort++; 1125 goto out; /* XXX */ 1126 } 1127 /* 1128 * Now calculate the full extent of the headers. Note 1129 * mesh_decap will pull up anything we didn't get 1130 * above when it strips the 802.11 headers. 1131 */ 1132 mc = (const struct ieee80211_meshcntl *) 1133 (mtod(m, const uint8_t *) + hdrspace); 1134 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1135 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1136 hdrspace += meshdrlen; 1137 seq = LE_READ_4(mc->mc_seq); 1138 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1139 addr = wh->i_addr3; 1140 else 1141 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1142 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1143 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1144 addr, "data", "%s", "not to me"); 1145 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1146 goto out; 1147 } 1148 if (mesh_checkpseq(vap, addr, seq) != 0) { 1149 vap->iv_stats.is_rx_dup++; 1150 goto out; 1151 } 1152 1153 /* 1154 * Potentially forward packet. See table s36 (p140) 1155 * for the rules. XXX tap fwd'd packets not for us? 1156 */ 1157 if (dir == IEEE80211_FC1_DIR_FROMDS || 1158 !mesh_isucastforme(vap, wh, mc)) { 1159 mesh_forward(vap, m, mc); 1160 if (dir == IEEE80211_FC1_DIR_DSTODS) 1161 goto out; 1162 /* NB: fall thru to deliver mcast frames locally */ 1163 } 1164 1165 /* 1166 * Save QoS bits for use below--before we strip the header. 1167 */ 1168 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1169 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1170 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1171 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1172 } else 1173 qos = 0; 1174 /* 1175 * Next up, any fragmentation. 1176 */ 1177 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1178 m = ieee80211_defrag(ni, m, hdrspace); 1179 if (m == NULL) { 1180 /* Fragment dropped or frame not complete yet */ 1181 goto out; 1182 } 1183 } 1184 wh = NULL; /* no longer valid, catch any uses */ 1185 1186 if (ieee80211_radiotap_active_vap(vap)) 1187 ieee80211_radiotap_rx(vap, m); 1188 need_tap = 0; 1189 1190 /* 1191 * Finally, strip the 802.11 header. 1192 */ 1193 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1194 if (m == NULL) { 1195 /* XXX mask bit to check for both */ 1196 /* don't count Null data frames as errors */ 1197 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1198 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1199 goto out; 1200 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1201 ni->ni_macaddr, "data", "%s", "decap error"); 1202 vap->iv_stats.is_rx_decap++; 1203 IEEE80211_NODE_STAT(ni, rx_decap); 1204 goto err; 1205 } 1206 if (qos & IEEE80211_QOS_AMSDU) { 1207 m = ieee80211_decap_amsdu(ni, m); 1208 if (m == NULL) 1209 return IEEE80211_FC0_TYPE_DATA; 1210 } 1211 ieee80211_deliver_data(vap, ni, m); 1212 return type; 1213 case IEEE80211_FC0_TYPE_MGT: 1214 vap->iv_stats.is_rx_mgmt++; 1215 IEEE80211_NODE_STAT(ni, rx_mgmt); 1216 if (dir != IEEE80211_FC1_DIR_NODS) { 1217 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1218 wh, "mgt", "incorrect dir 0x%x", dir); 1219 vap->iv_stats.is_rx_wrongdir++; 1220 goto err; 1221 } 1222 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1223 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1224 ni->ni_macaddr, "mgt", "too short: len %u", 1225 m->m_pkthdr.len); 1226 vap->iv_stats.is_rx_tooshort++; 1227 goto out; 1228 } 1229 #ifdef IEEE80211_DEBUG 1230 if ((ieee80211_msg_debug(vap) && 1231 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1232 ieee80211_msg_dumppkts(vap)) { 1233 if_printf(ifp, "received %s from %6D rssi %d\n", 1234 ieee80211_mgt_subtype_name[subtype >> 1235 IEEE80211_FC0_SUBTYPE_SHIFT], 1236 wh->i_addr2, ":", rssi); 1237 } 1238 #endif 1239 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1240 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1241 wh, NULL, "%s", "WEP set but not permitted"); 1242 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1243 goto out; 1244 } 1245 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1246 goto out; 1247 case IEEE80211_FC0_TYPE_CTL: 1248 vap->iv_stats.is_rx_ctl++; 1249 IEEE80211_NODE_STAT(ni, rx_ctrl); 1250 goto out; 1251 default: 1252 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1253 wh, "bad", "frame type 0x%x", type); 1254 /* should not come here */ 1255 break; 1256 } 1257 err: 1258 ifp->if_ierrors++; 1259 out: 1260 if (m != NULL) { 1261 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1262 ieee80211_radiotap_rx(vap, m); 1263 m_freem(m); 1264 } 1265 return type; 1266 } 1267 1268 static void 1269 mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1270 int rssi, int nf) 1271 { 1272 struct ieee80211vap *vap = ni->ni_vap; 1273 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1274 struct ieee80211com *ic = ni->ni_ic; 1275 struct ieee80211_frame *wh; 1276 uint8_t *frm, *efrm; 1277 1278 wh = mtod(m0, struct ieee80211_frame *); 1279 frm = (uint8_t *)&wh[1]; 1280 efrm = mtod(m0, uint8_t *) + m0->m_len; 1281 switch (subtype) { 1282 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1283 case IEEE80211_FC0_SUBTYPE_BEACON: 1284 { 1285 struct ieee80211_scanparams scan; 1286 /* 1287 * We process beacon/probe response 1288 * frames to discover neighbors. 1289 */ 1290 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1291 return; 1292 /* 1293 * Count frame now that we know it's to be processed. 1294 */ 1295 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1296 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1297 IEEE80211_NODE_STAT(ni, rx_beacons); 1298 } else 1299 IEEE80211_NODE_STAT(ni, rx_proberesp); 1300 /* 1301 * If scanning, just pass information to the scan module. 1302 */ 1303 if (ic->ic_flags & IEEE80211_F_SCAN) { 1304 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1305 /* 1306 * Actively scanning a channel marked passive; 1307 * send a probe request now that we know there 1308 * is 802.11 traffic present. 1309 * 1310 * XXX check if the beacon we recv'd gives 1311 * us what we need and suppress the probe req 1312 */ 1313 ieee80211_probe_curchan(vap, 1); 1314 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1315 } 1316 ieee80211_add_scan(vap, &scan, wh, 1317 subtype, rssi, nf); 1318 return; 1319 } 1320 1321 /* The rest of this code assumes we are running */ 1322 if (vap->iv_state != IEEE80211_S_RUN) 1323 return; 1324 /* 1325 * Ignore non-mesh STAs. 1326 */ 1327 if ((scan.capinfo & 1328 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1329 scan.meshid == NULL || scan.meshconf == NULL) { 1330 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1331 wh, "beacon", "%s", "not a mesh sta"); 1332 vap->iv_stats.is_mesh_wrongmesh++; 1333 return; 1334 } 1335 /* 1336 * Ignore STAs for other mesh networks. 1337 */ 1338 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1339 mesh_verify_meshconf(vap, scan.meshconf)) { 1340 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1341 wh, "beacon", "%s", "not for our mesh"); 1342 vap->iv_stats.is_mesh_wrongmesh++; 1343 return; 1344 } 1345 /* 1346 * Peer only based on the current ACL policy. 1347 */ 1348 if (vap->iv_acl != NULL && 1349 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1350 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1351 wh, NULL, "%s", "disallowed by ACL"); 1352 vap->iv_stats.is_rx_acl++; 1353 return; 1354 } 1355 /* 1356 * Do neighbor discovery. 1357 */ 1358 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1359 /* 1360 * Create a new entry in the neighbor table. 1361 */ 1362 ni = ieee80211_add_neighbor(vap, wh, &scan); 1363 } 1364 /* 1365 * Automatically peer with discovered nodes if possible. 1366 * XXX backoff on repeated failure 1367 */ 1368 if (ni != vap->iv_bss && 1369 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1370 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1371 uint16_t args[1]; 1372 1373 ni->ni_mlpid = mesh_generateid(vap); 1374 if (ni->ni_mlpid == 0) 1375 return; 1376 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1377 args[0] = ni->ni_mlpid; 1378 ieee80211_send_action(ni, 1379 IEEE80211_ACTION_CAT_MESHPEERING, 1380 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1381 ni->ni_mlrcnt = 0; 1382 mesh_peer_timeout_setup(ni); 1383 } 1384 break; 1385 } 1386 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1387 { 1388 uint8_t *ssid, *meshid, *rates, *xrates; 1389 1390 if (vap->iv_state != IEEE80211_S_RUN) { 1391 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1392 wh, NULL, "wrong state %s", 1393 ieee80211_state_name[vap->iv_state]); 1394 vap->iv_stats.is_rx_mgtdiscard++; 1395 return; 1396 } 1397 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1398 /* frame must be directed */ 1399 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1400 wh, NULL, "%s", "not unicast"); 1401 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1402 return; 1403 } 1404 /* 1405 * prreq frame format 1406 * [tlv] ssid 1407 * [tlv] supported rates 1408 * [tlv] extended supported rates 1409 * [tlv] mesh id 1410 */ 1411 ssid = meshid = rates = xrates = NULL; 1412 while (efrm - frm > 1) { 1413 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1414 switch (*frm) { 1415 case IEEE80211_ELEMID_SSID: 1416 ssid = frm; 1417 break; 1418 case IEEE80211_ELEMID_RATES: 1419 rates = frm; 1420 break; 1421 case IEEE80211_ELEMID_XRATES: 1422 xrates = frm; 1423 break; 1424 case IEEE80211_ELEMID_MESHID: 1425 meshid = frm; 1426 break; 1427 } 1428 frm += frm[2] + 2; 1429 } 1430 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1431 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1432 if (xrates != NULL) 1433 IEEE80211_VERIFY_ELEMENT(xrates, 1434 IEEE80211_RATE_MAXSIZE - rates[1], return); 1435 if (meshid != NULL) { 1436 IEEE80211_VERIFY_ELEMENT(meshid, 1437 IEEE80211_MESHID_LEN, return); 1438 /* NB: meshid, not ssid */ 1439 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1440 } 1441 1442 /* XXX find a better class or define it's own */ 1443 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1444 "%s", "recv probe req"); 1445 /* 1446 * Some legacy 11b clients cannot hack a complete 1447 * probe response frame. When the request includes 1448 * only a bare-bones rate set, communicate this to 1449 * the transmit side. 1450 */ 1451 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1452 break; 1453 } 1454 case IEEE80211_FC0_SUBTYPE_ACTION: 1455 if (vap->iv_state != IEEE80211_S_RUN) { 1456 vap->iv_stats.is_rx_mgtdiscard++; 1457 break; 1458 } 1459 /* 1460 * We received an action for an unknown neighbor. 1461 * XXX: wait for it to beacon or create ieee80211_node? 1462 */ 1463 if (ni == vap->iv_bss) { 1464 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1465 wh, NULL, "%s", "unknown node"); 1466 vap->iv_stats.is_rx_mgtdiscard++; 1467 break; 1468 } 1469 /* 1470 * Discard if not for us. 1471 */ 1472 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1473 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1474 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1475 wh, NULL, "%s", "not for me"); 1476 vap->iv_stats.is_rx_mgtdiscard++; 1477 break; 1478 } 1479 /* XXX parse_action is a bit useless now */ 1480 if (ieee80211_parse_action(ni, m0) == 0) 1481 ic->ic_recv_action(ni, wh, frm, efrm); 1482 break; 1483 case IEEE80211_FC0_SUBTYPE_AUTH: 1484 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1485 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1486 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1487 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1488 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1489 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1490 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1491 wh, NULL, "%s", "not handled"); 1492 vap->iv_stats.is_rx_mgtdiscard++; 1493 return; 1494 default: 1495 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1496 wh, "mgt", "subtype 0x%x not handled", subtype); 1497 vap->iv_stats.is_rx_badsubtype++; 1498 break; 1499 } 1500 } 1501 1502 /* 1503 * Parse meshpeering action ie's for open+confirm frames; the 1504 * important bits are returned in the supplied structure. 1505 */ 1506 static const struct ieee80211_meshpeer_ie * 1507 mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1508 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1509 const uint8_t *frm, const uint8_t *efrm, 1510 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1511 { 1512 struct ieee80211vap *vap = ni->ni_vap; 1513 const struct ieee80211_meshpeer_ie *mpie; 1514 const uint8_t *meshid, *meshconf, *meshpeer; 1515 1516 meshid = meshconf = meshpeer = NULL; 1517 while (efrm - frm > 1) { 1518 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1519 switch (*frm) { 1520 case IEEE80211_ELEMID_MESHID: 1521 meshid = frm; 1522 break; 1523 case IEEE80211_ELEMID_MESHCONF: 1524 meshconf = frm; 1525 break; 1526 case IEEE80211_ELEMID_MESHPEER: 1527 meshpeer = frm; 1528 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1529 memset(mp, 0, sizeof(*mp)); 1530 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1531 /* NB: peer link ID is optional on these frames */ 1532 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1533 mpie->peer_len == 8) { 1534 mp->peer_linkid = 0; 1535 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1536 } else { 1537 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1538 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1539 } 1540 break; 1541 } 1542 frm += frm[1] + 2; 1543 } 1544 1545 /* 1546 * Verify the contents of the frame. Action frames with 1547 * close subtype don't have a Mesh Configuration IE. 1548 * If if fails validation, close the peer link. 1549 */ 1550 KASSERT(meshpeer != NULL && 1551 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1552 ("parsing close action")); 1553 1554 if (mesh_verify_meshid(vap, meshid) || 1555 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1556 mesh_verify_meshconf(vap, meshconf)) { 1557 uint16_t args[3]; 1558 1559 IEEE80211_DISCARD(vap, 1560 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1561 wh, NULL, "%s", "not for our mesh"); 1562 vap->iv_stats.is_rx_mgtdiscard++; 1563 switch (ni->ni_mlstate) { 1564 case IEEE80211_NODE_MESH_IDLE: 1565 case IEEE80211_NODE_MESH_ESTABLISHED: 1566 case IEEE80211_NODE_MESH_HOLDING: 1567 /* ignore */ 1568 break; 1569 case IEEE80211_NODE_MESH_OPENSNT: 1570 case IEEE80211_NODE_MESH_OPENRCV: 1571 case IEEE80211_NODE_MESH_CONFIRMRCV: 1572 args[0] = ni->ni_mlpid; 1573 args[1] = ni->ni_mllid; 1574 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1575 ieee80211_send_action(ni, 1576 IEEE80211_ACTION_CAT_MESHPEERING, 1577 IEEE80211_ACTION_MESHPEERING_CLOSE, 1578 args); 1579 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1580 mesh_peer_timeout_setup(ni); 1581 break; 1582 } 1583 return NULL; 1584 } 1585 return (const struct ieee80211_meshpeer_ie *) mp; 1586 } 1587 1588 static int 1589 mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1590 const struct ieee80211_frame *wh, 1591 const uint8_t *frm, const uint8_t *efrm) 1592 { 1593 struct ieee80211vap *vap = ni->ni_vap; 1594 struct ieee80211_meshpeer_ie ie; 1595 const struct ieee80211_meshpeer_ie *meshpeer; 1596 uint16_t args[3]; 1597 1598 /* +2+2 for action + code + capabilites */ 1599 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1600 IEEE80211_ACTION_MESHPEERING_OPEN); 1601 if (meshpeer == NULL) { 1602 return 0; 1603 } 1604 1605 /* XXX move up */ 1606 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1607 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1608 1609 switch (ni->ni_mlstate) { 1610 case IEEE80211_NODE_MESH_IDLE: 1611 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1612 ni->ni_mllid = meshpeer->peer_llinkid; 1613 ni->ni_mlpid = mesh_generateid(vap); 1614 if (ni->ni_mlpid == 0) 1615 return 0; /* XXX */ 1616 args[0] = ni->ni_mlpid; 1617 /* Announce we're open too... */ 1618 ieee80211_send_action(ni, 1619 IEEE80211_ACTION_CAT_MESHPEERING, 1620 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1621 /* ...and confirm the link. */ 1622 args[0] = ni->ni_mlpid; 1623 args[1] = ni->ni_mllid; 1624 ieee80211_send_action(ni, 1625 IEEE80211_ACTION_CAT_MESHPEERING, 1626 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1627 args); 1628 mesh_peer_timeout_setup(ni); 1629 break; 1630 case IEEE80211_NODE_MESH_OPENRCV: 1631 /* Wrong Link ID */ 1632 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1633 args[0] = ni->ni_mllid; 1634 args[1] = ni->ni_mlpid; 1635 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1636 ieee80211_send_action(ni, 1637 IEEE80211_ACTION_CAT_MESHPEERING, 1638 IEEE80211_ACTION_MESHPEERING_CLOSE, 1639 args); 1640 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1641 mesh_peer_timeout_setup(ni); 1642 break; 1643 } 1644 /* Duplicate open, confirm again. */ 1645 args[0] = ni->ni_mlpid; 1646 args[1] = ni->ni_mllid; 1647 ieee80211_send_action(ni, 1648 IEEE80211_ACTION_CAT_MESHPEERING, 1649 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1650 args); 1651 break; 1652 case IEEE80211_NODE_MESH_OPENSNT: 1653 ni->ni_mllid = meshpeer->peer_llinkid; 1654 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1655 args[0] = ni->ni_mlpid; 1656 args[1] = ni->ni_mllid; 1657 ieee80211_send_action(ni, 1658 IEEE80211_ACTION_CAT_MESHPEERING, 1659 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1660 args); 1661 /* NB: don't setup/clear any timeout */ 1662 break; 1663 case IEEE80211_NODE_MESH_CONFIRMRCV: 1664 if (ni->ni_mlpid != meshpeer->peer_linkid || 1665 ni->ni_mllid != meshpeer->peer_llinkid) { 1666 args[0] = ni->ni_mlpid; 1667 args[1] = ni->ni_mllid; 1668 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1669 ieee80211_send_action(ni, 1670 IEEE80211_ACTION_CAT_MESHPEERING, 1671 IEEE80211_ACTION_MESHPEERING_CLOSE, 1672 args); 1673 mesh_linkchange(ni, 1674 IEEE80211_NODE_MESH_HOLDING); 1675 mesh_peer_timeout_setup(ni); 1676 break; 1677 } 1678 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1679 ni->ni_mllid = meshpeer->peer_llinkid; 1680 args[0] = ni->ni_mlpid; 1681 args[1] = ni->ni_mllid; 1682 ieee80211_send_action(ni, 1683 IEEE80211_ACTION_CAT_MESHPEERING, 1684 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1685 args); 1686 mesh_peer_timeout_stop(ni); 1687 break; 1688 case IEEE80211_NODE_MESH_ESTABLISHED: 1689 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1690 args[0] = ni->ni_mllid; 1691 args[1] = ni->ni_mlpid; 1692 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1693 ieee80211_send_action(ni, 1694 IEEE80211_ACTION_CAT_MESHPEERING, 1695 IEEE80211_ACTION_MESHPEERING_CLOSE, 1696 args); 1697 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1698 mesh_peer_timeout_setup(ni); 1699 break; 1700 } 1701 args[0] = ni->ni_mlpid; 1702 args[1] = ni->ni_mllid; 1703 ieee80211_send_action(ni, 1704 IEEE80211_ACTION_CAT_MESHPEERING, 1705 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1706 args); 1707 break; 1708 case IEEE80211_NODE_MESH_HOLDING: 1709 args[0] = ni->ni_mlpid; 1710 args[1] = meshpeer->peer_llinkid; 1711 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1712 ieee80211_send_action(ni, 1713 IEEE80211_ACTION_CAT_MESHPEERING, 1714 IEEE80211_ACTION_MESHPEERING_CLOSE, 1715 args); 1716 break; 1717 } 1718 return 0; 1719 } 1720 1721 static int 1722 mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1723 const struct ieee80211_frame *wh, 1724 const uint8_t *frm, const uint8_t *efrm) 1725 { 1726 struct ieee80211vap *vap = ni->ni_vap; 1727 struct ieee80211_meshpeer_ie ie; 1728 const struct ieee80211_meshpeer_ie *meshpeer; 1729 uint16_t args[3]; 1730 1731 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1732 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1733 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1734 if (meshpeer == NULL) { 1735 return 0; 1736 } 1737 1738 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1739 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1740 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1741 1742 switch (ni->ni_mlstate) { 1743 case IEEE80211_NODE_MESH_OPENRCV: 1744 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1745 mesh_peer_timeout_stop(ni); 1746 break; 1747 case IEEE80211_NODE_MESH_OPENSNT: 1748 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1749 break; 1750 case IEEE80211_NODE_MESH_HOLDING: 1751 args[0] = ni->ni_mlpid; 1752 args[1] = meshpeer->peer_llinkid; 1753 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1754 ieee80211_send_action(ni, 1755 IEEE80211_ACTION_CAT_MESHPEERING, 1756 IEEE80211_ACTION_MESHPEERING_CLOSE, 1757 args); 1758 break; 1759 case IEEE80211_NODE_MESH_CONFIRMRCV: 1760 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1761 args[0] = ni->ni_mlpid; 1762 args[1] = ni->ni_mllid; 1763 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1764 ieee80211_send_action(ni, 1765 IEEE80211_ACTION_CAT_MESHPEERING, 1766 IEEE80211_ACTION_MESHPEERING_CLOSE, 1767 args); 1768 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1769 mesh_peer_timeout_setup(ni); 1770 } 1771 break; 1772 default: 1773 IEEE80211_DISCARD(vap, 1774 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1775 wh, NULL, "received confirm in invalid state %d", 1776 ni->ni_mlstate); 1777 vap->iv_stats.is_rx_mgtdiscard++; 1778 break; 1779 } 1780 return 0; 1781 } 1782 1783 static int 1784 mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1785 const struct ieee80211_frame *wh, 1786 const uint8_t *frm, const uint8_t *efrm) 1787 { 1788 uint16_t args[3]; 1789 1790 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1791 ni, "%s", "recv PEER CLOSE"); 1792 1793 switch (ni->ni_mlstate) { 1794 case IEEE80211_NODE_MESH_IDLE: 1795 /* ignore */ 1796 break; 1797 case IEEE80211_NODE_MESH_OPENRCV: 1798 case IEEE80211_NODE_MESH_OPENSNT: 1799 case IEEE80211_NODE_MESH_CONFIRMRCV: 1800 case IEEE80211_NODE_MESH_ESTABLISHED: 1801 args[0] = ni->ni_mlpid; 1802 args[1] = ni->ni_mllid; 1803 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1804 ieee80211_send_action(ni, 1805 IEEE80211_ACTION_CAT_MESHPEERING, 1806 IEEE80211_ACTION_MESHPEERING_CLOSE, 1807 args); 1808 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1809 mesh_peer_timeout_setup(ni); 1810 break; 1811 case IEEE80211_NODE_MESH_HOLDING: 1812 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1813 mesh_peer_timeout_setup(ni); 1814 break; 1815 } 1816 return 0; 1817 } 1818 1819 /* 1820 * Link Metric handling. 1821 */ 1822 static int 1823 mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1824 const struct ieee80211_frame *wh, 1825 const uint8_t *frm, const uint8_t *efrm) 1826 { 1827 uint32_t metric; 1828 1829 metric = mesh_airtime_calc(ni); 1830 ieee80211_send_action(ni, 1831 IEEE80211_ACTION_CAT_MESHLMETRIC, 1832 IEEE80211_ACTION_MESHLMETRIC_REP, 1833 &metric); 1834 return 0; 1835 } 1836 1837 static int 1838 mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1839 const struct ieee80211_frame *wh, 1840 const uint8_t *frm, const uint8_t *efrm) 1841 { 1842 return 0; 1843 } 1844 1845 static int 1846 mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1847 { 1848 struct ieee80211_bpf_params params; 1849 1850 memset(¶ms, 0, sizeof(params)); 1851 params.ibp_pri = WME_AC_VO; 1852 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1853 /* XXX ucast/mcast */ 1854 params.ibp_try0 = ni->ni_txparms->maxretry; 1855 params.ibp_power = ni->ni_txpower; 1856 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1857 ¶ms); 1858 } 1859 1860 #define ADDSHORT(frm, v) do { \ 1861 frm[0] = (v) & 0xff; \ 1862 frm[1] = (v) >> 8; \ 1863 frm += 2; \ 1864 } while (0) 1865 #define ADDWORD(frm, v) do { \ 1866 frm[0] = (v) & 0xff; \ 1867 frm[1] = ((v) >> 8) & 0xff; \ 1868 frm[2] = ((v) >> 16) & 0xff; \ 1869 frm[3] = ((v) >> 24) & 0xff; \ 1870 frm += 4; \ 1871 } while (0) 1872 1873 static int 1874 mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1875 int category, int action, void *args0) 1876 { 1877 struct ieee80211vap *vap = ni->ni_vap; 1878 struct ieee80211com *ic = ni->ni_ic; 1879 uint16_t *args = args0; 1880 const struct ieee80211_rateset *rs; 1881 struct mbuf *m; 1882 uint8_t *frm; 1883 1884 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1885 "send PEER OPEN action: localid 0x%x", args[0]); 1886 1887 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1888 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 1889 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 1890 ieee80211_ref_node(ni); 1891 1892 m = ieee80211_getmgtframe(&frm, 1893 ic->ic_headroom + sizeof(struct ieee80211_frame), 1894 sizeof(uint16_t) /* action+category */ 1895 + sizeof(uint16_t) /* capabilites */ 1896 + 2 + IEEE80211_RATE_SIZE 1897 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1898 + 2 + IEEE80211_MESHID_LEN 1899 + sizeof(struct ieee80211_meshconf_ie) 1900 + sizeof(struct ieee80211_meshpeer_ie) 1901 ); 1902 if (m != NULL) { 1903 /* 1904 * mesh peer open action frame format: 1905 * [1] category 1906 * [1] action 1907 * [2] capabilities 1908 * [tlv] rates 1909 * [tlv] xrates 1910 * [tlv] mesh id 1911 * [tlv] mesh conf 1912 * [tlv] mesh peer link mgmt 1913 */ 1914 *frm++ = category; 1915 *frm++ = action; 1916 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1917 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1918 frm = ieee80211_add_rates(frm, rs); 1919 frm = ieee80211_add_xrates(frm, rs); 1920 frm = ieee80211_add_meshid(frm, vap); 1921 frm = ieee80211_add_meshconf(frm, vap); 1922 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1923 args[0], 0, 0); 1924 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1925 return mesh_send_action(ni, m); 1926 } else { 1927 vap->iv_stats.is_tx_nobuf++; 1928 ieee80211_free_node(ni); 1929 return ENOMEM; 1930 } 1931 } 1932 1933 static int 1934 mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1935 int category, int action, void *args0) 1936 { 1937 struct ieee80211vap *vap = ni->ni_vap; 1938 struct ieee80211com *ic = ni->ni_ic; 1939 uint16_t *args = args0; 1940 const struct ieee80211_rateset *rs; 1941 struct mbuf *m; 1942 uint8_t *frm; 1943 1944 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1945 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1946 args[0], args[1]); 1947 1948 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1949 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 1950 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 1951 ieee80211_ref_node(ni); 1952 1953 m = ieee80211_getmgtframe(&frm, 1954 ic->ic_headroom + sizeof(struct ieee80211_frame), 1955 sizeof(uint16_t) /* action+category */ 1956 + sizeof(uint16_t) /* capabilites */ 1957 + sizeof(uint16_t) /* status code */ 1958 + sizeof(uint16_t) /* AID */ 1959 + 2 + IEEE80211_RATE_SIZE 1960 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1961 + 2 + IEEE80211_MESHID_LEN 1962 + sizeof(struct ieee80211_meshconf_ie) 1963 + sizeof(struct ieee80211_meshpeer_ie) 1964 ); 1965 if (m != NULL) { 1966 /* 1967 * mesh peer confirm action frame format: 1968 * [1] category 1969 * [1] action 1970 * [2] capabilities 1971 * [2] status code 1972 * [2] association id (peer ID) 1973 * [tlv] rates 1974 * [tlv] xrates 1975 * [tlv] mesh id 1976 * [tlv] mesh conf 1977 * [tlv] mesh peer link mgmt 1978 */ 1979 *frm++ = category; 1980 *frm++ = action; 1981 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1982 ADDSHORT(frm, 0); /* status code */ 1983 ADDSHORT(frm, args[1]); /* AID */ 1984 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1985 frm = ieee80211_add_rates(frm, rs); 1986 frm = ieee80211_add_xrates(frm, rs); 1987 frm = ieee80211_add_meshid(frm, vap); 1988 frm = ieee80211_add_meshconf(frm, vap); 1989 frm = ieee80211_add_meshpeer(frm, 1990 IEEE80211_MESH_PEER_LINK_CONFIRM, 1991 args[0], args[1], 0); 1992 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1993 return mesh_send_action(ni, m); 1994 } else { 1995 vap->iv_stats.is_tx_nobuf++; 1996 ieee80211_free_node(ni); 1997 return ENOMEM; 1998 } 1999 } 2000 2001 static int 2002 mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2003 int category, int action, void *args0) 2004 { 2005 struct ieee80211vap *vap = ni->ni_vap; 2006 struct ieee80211com *ic = ni->ni_ic; 2007 uint16_t *args = args0; 2008 struct mbuf *m; 2009 uint8_t *frm; 2010 2011 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2012 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2013 args[0], args[1], args[2]); 2014 2015 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2016 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2017 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2018 ieee80211_ref_node(ni); 2019 2020 m = ieee80211_getmgtframe(&frm, 2021 ic->ic_headroom + sizeof(struct ieee80211_frame), 2022 sizeof(uint16_t) /* action+category */ 2023 + sizeof(uint16_t) /* reason code */ 2024 + 2 + IEEE80211_MESHID_LEN 2025 + sizeof(struct ieee80211_meshpeer_ie) 2026 ); 2027 if (m != NULL) { 2028 /* 2029 * mesh peer close action frame format: 2030 * [1] category 2031 * [1] action 2032 * [2] reason code 2033 * [tlv] mesh id 2034 * [tlv] mesh peer link mgmt 2035 */ 2036 *frm++ = category; 2037 *frm++ = action; 2038 ADDSHORT(frm, args[2]); /* reason code */ 2039 frm = ieee80211_add_meshid(frm, vap); 2040 frm = ieee80211_add_meshpeer(frm, 2041 IEEE80211_MESH_PEER_LINK_CLOSE, 2042 args[0], args[1], args[2]); 2043 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2044 return mesh_send_action(ni, m); 2045 } else { 2046 vap->iv_stats.is_tx_nobuf++; 2047 ieee80211_free_node(ni); 2048 return ENOMEM; 2049 } 2050 } 2051 2052 static int 2053 mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2054 int category, int action, void *arg0) 2055 { 2056 struct ieee80211vap *vap = ni->ni_vap; 2057 struct ieee80211com *ic = ni->ni_ic; 2058 struct mbuf *m; 2059 uint8_t *frm; 2060 2061 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2062 "%s", "send LINK METRIC REQUEST action"); 2063 2064 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2065 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2066 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2067 ieee80211_ref_node(ni); 2068 2069 m = ieee80211_getmgtframe(&frm, 2070 ic->ic_headroom + sizeof(struct ieee80211_frame), 2071 sizeof(uint16_t) /* action+category */ 2072 ); 2073 if (m != NULL) { 2074 /* 2075 * mesh link metric request 2076 * [1] category 2077 * [1] action 2078 */ 2079 *frm++ = category; 2080 *frm++ = action; 2081 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2082 return mesh_send_action(ni, m); 2083 } else { 2084 vap->iv_stats.is_tx_nobuf++; 2085 ieee80211_free_node(ni); 2086 return ENOMEM; 2087 } 2088 } 2089 2090 static int 2091 mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2092 int category, int action, void *args0) 2093 { 2094 struct ieee80211vap *vap = ni->ni_vap; 2095 struct ieee80211com *ic = ni->ni_ic; 2096 uint32_t *metric = args0; 2097 struct mbuf *m; 2098 uint8_t *frm; 2099 2100 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2101 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2102 2103 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2104 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2105 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2106 ieee80211_ref_node(ni); 2107 2108 m = ieee80211_getmgtframe(&frm, 2109 ic->ic_headroom + sizeof(struct ieee80211_frame), 2110 sizeof(uint16_t) /* action+category */ 2111 + sizeof(struct ieee80211_meshlmetric_ie) 2112 ); 2113 if (m != NULL) { 2114 /* 2115 * mesh link metric reply 2116 * [1] category 2117 * [1] action 2118 * [tlv] mesh link metric 2119 */ 2120 *frm++ = category; 2121 *frm++ = action; 2122 frm = ieee80211_add_meshlmetric(frm, *metric); 2123 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2124 return mesh_send_action(ni, m); 2125 } else { 2126 vap->iv_stats.is_tx_nobuf++; 2127 ieee80211_free_node(ni); 2128 return ENOMEM; 2129 } 2130 } 2131 2132 static void 2133 mesh_peer_timeout_setup(struct ieee80211_node *ni) 2134 { 2135 switch (ni->ni_mlstate) { 2136 case IEEE80211_NODE_MESH_HOLDING: 2137 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2138 break; 2139 case IEEE80211_NODE_MESH_CONFIRMRCV: 2140 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2141 break; 2142 case IEEE80211_NODE_MESH_IDLE: 2143 ni->ni_mltval = 0; 2144 break; 2145 default: 2146 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2147 break; 2148 } 2149 if (ni->ni_mltval) { 2150 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2151 mesh_peer_timeout_callout, ni); 2152 } 2153 } 2154 2155 /* 2156 * Same as above but backoffs timer statisically 50%. 2157 */ 2158 static void 2159 mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2160 { 2161 uint32_t r; 2162 2163 r = karc4random(); 2164 ni->ni_mltval += r % ni->ni_mltval; 2165 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2166 mesh_peer_timeout_callout, ni); 2167 } 2168 2169 static __inline void 2170 mesh_peer_timeout_stop(struct ieee80211_node *ni) 2171 { 2172 callout_stop(&ni->ni_mltimer); 2173 } 2174 2175 /* 2176 * Mesh Peer Link Management FSM timeout handling. 2177 */ 2178 static void 2179 mesh_peer_timeout_callout(void *arg) 2180 { 2181 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2182 uint16_t args[3]; 2183 2184 wlan_serialize_enter(); 2185 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2186 ni, "mesh link timeout, state %d, retry counter %d", 2187 ni->ni_mlstate, ni->ni_mlrcnt); 2188 2189 switch (ni->ni_mlstate) { 2190 case IEEE80211_NODE_MESH_IDLE: 2191 case IEEE80211_NODE_MESH_ESTABLISHED: 2192 break; 2193 case IEEE80211_NODE_MESH_OPENSNT: 2194 case IEEE80211_NODE_MESH_OPENRCV: 2195 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2196 args[0] = ni->ni_mlpid; 2197 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2198 ieee80211_send_action(ni, 2199 IEEE80211_ACTION_CAT_MESHPEERING, 2200 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2201 ni->ni_mlrcnt = 0; 2202 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2203 mesh_peer_timeout_setup(ni); 2204 } else { 2205 args[0] = ni->ni_mlpid; 2206 ieee80211_send_action(ni, 2207 IEEE80211_ACTION_CAT_MESHPEERING, 2208 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2209 ni->ni_mlrcnt++; 2210 mesh_peer_timeout_backoff(ni); 2211 } 2212 break; 2213 case IEEE80211_NODE_MESH_CONFIRMRCV: 2214 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2215 args[0] = ni->ni_mlpid; 2216 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2217 ieee80211_send_action(ni, 2218 IEEE80211_ACTION_CAT_MESHPEERING, 2219 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2220 ni->ni_mlrcnt = 0; 2221 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2222 mesh_peer_timeout_setup(ni); 2223 } else { 2224 ni->ni_mlrcnt++; 2225 mesh_peer_timeout_setup(ni); 2226 } 2227 break; 2228 case IEEE80211_NODE_MESH_HOLDING: 2229 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2230 break; 2231 } 2232 wlan_serialize_exit(); 2233 } 2234 2235 static int 2236 mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2237 { 2238 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2239 2240 if (ie == NULL || ie[1] != ms->ms_idlen) 2241 return 1; 2242 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2243 } 2244 2245 /* 2246 * Check if we are using the same algorithms for this mesh. 2247 */ 2248 static int 2249 mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2250 { 2251 const struct ieee80211_meshconf_ie *meshconf = 2252 (const struct ieee80211_meshconf_ie *) ie; 2253 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2254 uint16_t cap; 2255 2256 if (meshconf == NULL) 2257 return 1; 2258 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2259 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2260 "unknown path selection algorithm: 0x%x\n", 2261 meshconf->conf_pselid); 2262 return 1; 2263 } 2264 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2265 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2266 "unknown path metric algorithm: 0x%x\n", 2267 meshconf->conf_pmetid); 2268 return 1; 2269 } 2270 if (meshconf->conf_ccid != 0) { 2271 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2272 "unknown congestion control algorithm: 0x%x\n", 2273 meshconf->conf_ccid); 2274 return 1; 2275 } 2276 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2277 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2278 "unknown sync algorithm: 0x%x\n", 2279 meshconf->conf_syncid); 2280 return 1; 2281 } 2282 if (meshconf->conf_authid != 0) { 2283 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2284 "unknown auth algorithm: 0x%x\n", 2285 meshconf->conf_pselid); 2286 return 1; 2287 } 2288 /* NB: conf_cap is only read correctly here */ 2289 cap = LE_READ_2(&meshconf->conf_cap); 2290 /* Not accepting peers */ 2291 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) { 2292 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2293 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2294 return 1; 2295 } 2296 return 0; 2297 } 2298 2299 static int 2300 mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2301 const uint8_t *ie) 2302 { 2303 const struct ieee80211_meshpeer_ie *meshpeer = 2304 (const struct ieee80211_meshpeer_ie *) ie; 2305 2306 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2307 meshpeer->peer_len > 10) 2308 return 1; 2309 switch (subtype) { 2310 case IEEE80211_MESH_PEER_LINK_OPEN: 2311 if (meshpeer->peer_len != 6) 2312 return 1; 2313 break; 2314 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2315 if (meshpeer->peer_len != 8) 2316 return 1; 2317 break; 2318 case IEEE80211_MESH_PEER_LINK_CLOSE: 2319 if (meshpeer->peer_len < 8) 2320 return 1; 2321 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2322 return 1; 2323 if (meshpeer->peer_rcode == 0) 2324 return 1; 2325 break; 2326 } 2327 return 0; 2328 } 2329 2330 /* 2331 * Add a Mesh ID IE to a frame. 2332 */ 2333 uint8_t * 2334 ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2335 { 2336 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2337 2338 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2339 2340 *frm++ = IEEE80211_ELEMID_MESHID; 2341 *frm++ = ms->ms_idlen; 2342 memcpy(frm, ms->ms_id, ms->ms_idlen); 2343 return frm + ms->ms_idlen; 2344 } 2345 2346 /* 2347 * Add a Mesh Configuration IE to a frame. 2348 * For now just use HWMP routing, Airtime link metric, Null Congestion 2349 * Signaling, Null Sync Protocol and Null Authentication. 2350 */ 2351 uint8_t * 2352 ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2353 { 2354 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2355 uint16_t caps; 2356 2357 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2358 2359 *frm++ = IEEE80211_ELEMID_MESHCONF; 2360 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2361 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2362 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2363 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2364 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2365 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2366 /* NB: set the number of neighbors before the rest */ 2367 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2368 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2369 *frm |= IEEE80211_MESHCONF_FORM_MP; 2370 frm += 1; 2371 caps = 0; 2372 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2373 caps |= IEEE80211_MESHCONF_CAP_AP; 2374 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2375 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2376 ADDSHORT(frm, caps); 2377 return frm; 2378 } 2379 2380 /* 2381 * Add a Mesh Peer Management IE to a frame. 2382 */ 2383 uint8_t * 2384 ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2385 uint16_t peerid, uint16_t reason) 2386 { 2387 /* XXX change for AH */ 2388 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2389 2390 KASSERT(localid != 0, ("localid == 0")); 2391 2392 *frm++ = IEEE80211_ELEMID_MESHPEER; 2393 switch (subtype) { 2394 case IEEE80211_MESH_PEER_LINK_OPEN: 2395 *frm++ = 6; /* length */ 2396 memcpy(frm, meshpeerproto, 4); 2397 frm += 4; 2398 ADDSHORT(frm, localid); /* local ID */ 2399 break; 2400 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2401 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2402 *frm++ = 8; /* length */ 2403 memcpy(frm, meshpeerproto, 4); 2404 frm += 4; 2405 ADDSHORT(frm, localid); /* local ID */ 2406 ADDSHORT(frm, peerid); /* peer ID */ 2407 break; 2408 case IEEE80211_MESH_PEER_LINK_CLOSE: 2409 if (peerid) 2410 *frm++ = 10; /* length */ 2411 else 2412 *frm++ = 8; /* length */ 2413 memcpy(frm, meshpeerproto, 4); 2414 frm += 4; 2415 ADDSHORT(frm, localid); /* local ID */ 2416 if (peerid) 2417 ADDSHORT(frm, peerid); /* peer ID */ 2418 ADDSHORT(frm, reason); 2419 break; 2420 } 2421 return frm; 2422 } 2423 2424 /* 2425 * Compute an Airtime Link Metric for the link with this node. 2426 * 2427 * Based on Draft 3.0 spec (11B.10, p.149). 2428 */ 2429 /* 2430 * Max 802.11s overhead. 2431 */ 2432 #define IEEE80211_MESH_MAXOVERHEAD \ 2433 (sizeof(struct ieee80211_qosframe_addr4) \ 2434 + sizeof(struct ieee80211_meshcntl_ae11) \ 2435 + sizeof(struct llc) \ 2436 + IEEE80211_ADDR_LEN \ 2437 + IEEE80211_WEP_IVLEN \ 2438 + IEEE80211_WEP_KIDLEN \ 2439 + IEEE80211_WEP_CRCLEN \ 2440 + IEEE80211_WEP_MICLEN \ 2441 + IEEE80211_CRC_LEN) 2442 uint32_t 2443 mesh_airtime_calc(struct ieee80211_node *ni) 2444 { 2445 #define M_BITS 8 2446 #define S_FACTOR (2 * M_BITS) 2447 struct ieee80211com *ic = ni->ni_ic; 2448 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2449 static const int nbits = 8192 << M_BITS; 2450 uint32_t overhead, rate, errrate; 2451 uint64_t res; 2452 2453 /* Time to transmit a frame */ 2454 rate = ni->ni_txrate; 2455 overhead = ieee80211_compute_duration(ic->ic_rt, 2456 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2457 /* Error rate in percentage */ 2458 /* XXX assuming small failures are ok */ 2459 errrate = (((ifp->if_oerrors + 2460 ifp->if_ierrors) / 100) << M_BITS) / 100; 2461 res = (overhead + (nbits / rate)) * 2462 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2463 2464 return (uint32_t)(res >> S_FACTOR); 2465 #undef M_BITS 2466 #undef S_FACTOR 2467 } 2468 2469 /* 2470 * Add a Mesh Link Metric report IE to a frame. 2471 */ 2472 uint8_t * 2473 ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2474 { 2475 *frm++ = IEEE80211_ELEMID_MESHLINK; 2476 *frm++ = 4; 2477 ADDWORD(frm, metric); 2478 return frm; 2479 } 2480 #undef ADDSHORT 2481 #undef ADDWORD 2482 2483 /* 2484 * Initialize any mesh-specific node state. 2485 */ 2486 void 2487 ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2488 { 2489 ni->ni_flags |= IEEE80211_NODE_QOS; 2490 callout_init_mp(&ni->ni_mltimer); 2491 } 2492 2493 /* 2494 * Cleanup any mesh-specific node state. 2495 */ 2496 void 2497 ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2498 { 2499 struct ieee80211vap *vap = ni->ni_vap; 2500 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2501 2502 callout_stop(&ni->ni_mltimer); 2503 /* NB: short-circuit callbacks after mesh_vdetach */ 2504 if (vap->iv_mesh != NULL) 2505 ms->ms_ppath->mpp_peerdown(ni); 2506 } 2507 2508 void 2509 ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2510 { 2511 ni->ni_meshidlen = ie[1]; 2512 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2513 } 2514 2515 /* 2516 * Setup mesh-specific node state on neighbor discovery. 2517 */ 2518 void 2519 ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2520 const struct ieee80211_frame *wh, 2521 const struct ieee80211_scanparams *sp) 2522 { 2523 ieee80211_parse_meshid(ni, sp->meshid); 2524 } 2525 2526 void 2527 ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2528 struct ieee80211_beacon_offsets *bo) 2529 { 2530 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2531 2532 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2533 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2534 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2535 } 2536 } 2537 2538 static int 2539 mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2540 { 2541 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2542 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2543 struct ieee80211_mesh_route *rt; 2544 struct ieee80211req_mesh_route *imr; 2545 size_t len, off; 2546 uint8_t *p; 2547 int error; 2548 2549 if (vap->iv_opmode != IEEE80211_M_MBSS) 2550 return ENOSYS; 2551 2552 error = 0; 2553 switch (ireq->i_type) { 2554 case IEEE80211_IOC_MESH_ID: 2555 ireq->i_len = ms->ms_idlen; 2556 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2557 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2558 break; 2559 case IEEE80211_IOC_MESH_AP: 2560 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2561 break; 2562 case IEEE80211_IOC_MESH_FWRD: 2563 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2564 break; 2565 case IEEE80211_IOC_MESH_TTL: 2566 ireq->i_val = ms->ms_ttl; 2567 break; 2568 case IEEE80211_IOC_MESH_RTCMD: 2569 switch (ireq->i_val) { 2570 case IEEE80211_MESH_RTCMD_LIST: 2571 len = 0; 2572 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2573 len += sizeof(*imr); 2574 } 2575 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2576 ireq->i_len = len; 2577 return ENOMEM; 2578 } 2579 ireq->i_len = len; 2580 /* XXX M_WAIT? */ 2581 p = kmalloc(len, M_TEMP, M_INTWAIT | M_ZERO); 2582 off = 0; 2583 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2584 if (off >= len) 2585 break; 2586 imr = (struct ieee80211req_mesh_route *) 2587 (p + off); 2588 imr->imr_flags = rt->rt_flags; 2589 IEEE80211_ADDR_COPY(imr->imr_dest, 2590 rt->rt_dest); 2591 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2592 rt->rt_nexthop); 2593 imr->imr_metric = rt->rt_metric; 2594 imr->imr_nhops = rt->rt_nhops; 2595 imr->imr_lifetime = rt->rt_lifetime; 2596 imr->imr_lastmseq = rt->rt_lastmseq; 2597 off += sizeof(*imr); 2598 } 2599 error = copyout(p, (uint8_t *)ireq->i_data, 2600 ireq->i_len); 2601 kfree(p, M_TEMP); 2602 break; 2603 case IEEE80211_MESH_RTCMD_FLUSH: 2604 case IEEE80211_MESH_RTCMD_ADD: 2605 case IEEE80211_MESH_RTCMD_DELETE: 2606 return EINVAL; 2607 default: 2608 return ENOSYS; 2609 } 2610 break; 2611 case IEEE80211_IOC_MESH_PR_METRIC: 2612 len = strlen(ms->ms_pmetric->mpm_descr); 2613 if (ireq->i_len < len) 2614 return EINVAL; 2615 ireq->i_len = len; 2616 error = copyout(ms->ms_pmetric->mpm_descr, 2617 (uint8_t *)ireq->i_data, len); 2618 break; 2619 case IEEE80211_IOC_MESH_PR_PATH: 2620 len = strlen(ms->ms_ppath->mpp_descr); 2621 if (ireq->i_len < len) 2622 return EINVAL; 2623 ireq->i_len = len; 2624 error = copyout(ms->ms_ppath->mpp_descr, 2625 (uint8_t *)ireq->i_data, len); 2626 break; 2627 default: 2628 return ENOSYS; 2629 } 2630 2631 return error; 2632 } 2633 IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2634 2635 static int 2636 mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2637 { 2638 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2639 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2640 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2641 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2642 int error; 2643 2644 if (vap->iv_opmode != IEEE80211_M_MBSS) 2645 return ENOSYS; 2646 2647 error = 0; 2648 switch (ireq->i_type) { 2649 case IEEE80211_IOC_MESH_ID: 2650 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2651 return EINVAL; 2652 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2653 if (error != 0) 2654 break; 2655 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2656 ms->ms_idlen = ireq->i_len; 2657 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2658 error = ENETRESET; 2659 break; 2660 case IEEE80211_IOC_MESH_AP: 2661 if (ireq->i_val) 2662 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2663 else 2664 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2665 error = ENETRESET; 2666 break; 2667 case IEEE80211_IOC_MESH_FWRD: 2668 if (ireq->i_val) 2669 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2670 else 2671 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2672 break; 2673 case IEEE80211_IOC_MESH_TTL: 2674 ms->ms_ttl = (uint8_t) ireq->i_val; 2675 break; 2676 case IEEE80211_IOC_MESH_RTCMD: 2677 switch (ireq->i_val) { 2678 case IEEE80211_MESH_RTCMD_LIST: 2679 return EINVAL; 2680 case IEEE80211_MESH_RTCMD_FLUSH: 2681 ieee80211_mesh_rt_flush(vap); 2682 break; 2683 case IEEE80211_MESH_RTCMD_ADD: 2684 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2685 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2686 return EINVAL; 2687 error = copyin(ireq->i_data, &tmpaddr, 2688 IEEE80211_ADDR_LEN); 2689 if (error == 0) 2690 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2691 break; 2692 case IEEE80211_MESH_RTCMD_DELETE: 2693 ieee80211_mesh_rt_del(vap, ireq->i_data); 2694 break; 2695 default: 2696 return ENOSYS; 2697 } 2698 break; 2699 case IEEE80211_IOC_MESH_PR_METRIC: 2700 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2701 if (error == 0) { 2702 error = mesh_select_proto_metric(vap, tmpproto); 2703 if (error == 0) 2704 error = ENETRESET; 2705 } 2706 break; 2707 case IEEE80211_IOC_MESH_PR_PATH: 2708 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2709 if (error == 0) { 2710 error = mesh_select_proto_path(vap, tmpproto); 2711 if (error == 0) 2712 error = ENETRESET; 2713 } 2714 break; 2715 default: 2716 return ENOSYS; 2717 } 2718 return error; 2719 } 2720 IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2721