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 enum ieee80211_state ostate; 520 char ethstr[ETHER_ADDRSTRLEN + 1]; 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 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 530 callout_stop(&ms->ms_cleantimer); 531 switch (nstate) { 532 case IEEE80211_S_INIT: 533 switch (ostate) { 534 case IEEE80211_S_SCAN: 535 ieee80211_cancel_scan(vap); 536 break; 537 case IEEE80211_S_CAC: 538 ieee80211_dfs_cac_stop(vap); 539 break; 540 case IEEE80211_S_RUN: 541 ieee80211_iterate_nodes(&ic->ic_sta, 542 mesh_vdetach_peers, NULL); 543 break; 544 default: 545 break; 546 } 547 if (ostate != IEEE80211_S_INIT) { 548 /* NB: optimize INIT -> INIT case */ 549 ieee80211_reset_bss(vap); 550 ieee80211_mesh_rt_flush(vap); 551 } 552 break; 553 case IEEE80211_S_SCAN: 554 switch (ostate) { 555 case IEEE80211_S_INIT: 556 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 557 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 558 ms->ms_idlen != 0) { 559 /* 560 * Already have a channel and a mesh ID; bypass 561 * the scan and startup immediately. 562 */ 563 ieee80211_create_ibss(vap, vap->iv_des_chan); 564 break; 565 } 566 /* 567 * Initiate a scan. We can come here as a result 568 * of an IEEE80211_IOC_SCAN_REQ too in which case 569 * the vap will be marked with IEEE80211_FEXT_SCANREQ 570 * and the scan request parameters will be present 571 * in iv_scanreq. Otherwise we do the default. 572 */ 573 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 574 ieee80211_check_scan(vap, 575 vap->iv_scanreq_flags, 576 vap->iv_scanreq_duration, 577 vap->iv_scanreq_mindwell, 578 vap->iv_scanreq_maxdwell, 579 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 580 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 581 } else 582 ieee80211_check_scan_current(vap); 583 break; 584 default: 585 break; 586 } 587 break; 588 case IEEE80211_S_CAC: 589 /* 590 * Start CAC on a DFS channel. We come here when starting 591 * a bss on a DFS channel (see ieee80211_create_ibss). 592 */ 593 ieee80211_dfs_cac_start(vap); 594 break; 595 case IEEE80211_S_RUN: 596 switch (ostate) { 597 case IEEE80211_S_INIT: 598 /* 599 * Already have a channel; bypass the 600 * scan and startup immediately. 601 * Note that ieee80211_create_ibss will call 602 * back to do a RUN->RUN state change. 603 */ 604 ieee80211_create_ibss(vap, 605 ieee80211_ht_adjust_channel(ic, 606 ic->ic_curchan, vap->iv_flags_ht)); 607 /* NB: iv_bss is changed on return */ 608 break; 609 case IEEE80211_S_CAC: 610 /* 611 * NB: This is the normal state change when CAC 612 * expires and no radar was detected; no need to 613 * clear the CAC timer as it's already expired. 614 */ 615 /* fall thru... */ 616 case IEEE80211_S_CSA: 617 #if 0 618 /* 619 * Shorten inactivity timer of associated stations 620 * to weed out sta's that don't follow a CSA. 621 */ 622 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 623 #endif 624 /* 625 * Update bss node channel to reflect where 626 * we landed after CSA. 627 */ 628 ieee80211_node_set_chan(vap->iv_bss, 629 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 630 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 631 /* XXX bypass debug msgs */ 632 break; 633 case IEEE80211_S_SCAN: 634 case IEEE80211_S_RUN: 635 #ifdef IEEE80211_DEBUG 636 if (ieee80211_msg_debug(vap)) { 637 struct ieee80211_node *ni = vap->iv_bss; 638 ieee80211_note(vap, 639 "synchronized with %s meshid ", 640 kether_ntoa(ni->ni_meshid, ethstr)); 641 ieee80211_print_essid(ni->ni_meshid, 642 ni->ni_meshidlen); 643 /* XXX MCS/HT */ 644 kprintf(" channel %d\n", 645 ieee80211_chan2ieee(ic, ic->ic_curchan)); 646 } 647 #endif 648 break; 649 default: 650 break; 651 } 652 ieee80211_node_authorize(vap->iv_bss); 653 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 654 mesh_rt_cleanup_callout, vap); 655 break; 656 default: 657 break; 658 } 659 /* NB: ostate not nstate */ 660 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 661 return 0; 662 } 663 664 static void 665 mesh_rt_cleanup_callout(void *arg) 666 { 667 struct ieee80211vap *vap = arg; 668 struct ieee80211_mesh_state *ms = vap->iv_mesh; 669 670 wlan_serialize_enter(); 671 mesh_rt_flush_invalid(vap); 672 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 673 mesh_rt_cleanup_callout, vap); 674 wlan_serialize_exit(); 675 } 676 677 678 /* 679 * Helper function to note the Mesh Peer Link FSM change. 680 */ 681 static void 682 mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 683 { 684 struct ieee80211vap *vap = ni->ni_vap; 685 struct ieee80211_mesh_state *ms = vap->iv_mesh; 686 #ifdef IEEE80211_DEBUG 687 static const char *meshlinkstates[] = { 688 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 689 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 690 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 691 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 692 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 693 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 694 }; 695 #endif 696 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 697 ni, "peer link: %s -> %s", 698 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 699 700 /* track neighbor count */ 701 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 702 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 703 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 704 ms->ms_neighbors++; 705 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 706 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 707 state != IEEE80211_NODE_MESH_ESTABLISHED) { 708 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 709 ms->ms_neighbors--; 710 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 711 } 712 ni->ni_mlstate = state; 713 switch (state) { 714 case IEEE80211_NODE_MESH_HOLDING: 715 ms->ms_ppath->mpp_peerdown(ni); 716 break; 717 case IEEE80211_NODE_MESH_ESTABLISHED: 718 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 719 break; 720 default: 721 break; 722 } 723 } 724 725 /* 726 * Helper function to generate a unique local ID required for mesh 727 * peer establishment. 728 */ 729 static void 730 mesh_checkid(void *arg, struct ieee80211_node *ni) 731 { 732 uint16_t *r = arg; 733 734 if (*r == ni->ni_mllid) 735 *(uint16_t *)arg = 0; 736 } 737 738 static uint32_t 739 mesh_generateid(struct ieee80211vap *vap) 740 { 741 int maxiter = 4; 742 uint16_t r; 743 744 do { 745 get_random_bytes(&r, 2); 746 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 747 maxiter--; 748 } while (r == 0 && maxiter > 0); 749 return r; 750 } 751 752 /* 753 * Verifies if we already received this packet by checking its 754 * sequence number. 755 * Returns 0 if the frame is to be accepted, 1 otherwise. 756 */ 757 static int 758 mesh_checkpseq(struct ieee80211vap *vap, 759 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 760 { 761 struct ieee80211_mesh_route *rt; 762 763 rt = ieee80211_mesh_rt_find(vap, source); 764 if (rt == NULL) { 765 rt = ieee80211_mesh_rt_add(vap, source); 766 if (rt == NULL) { 767 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 768 "%s", "add mcast route failed"); 769 vap->iv_stats.is_mesh_rtaddfailed++; 770 return 1; 771 } 772 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 773 "add mcast route, mesh seqno %d", seq); 774 rt->rt_lastmseq = seq; 775 return 0; 776 } 777 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 778 return 1; 779 } else { 780 rt->rt_lastmseq = seq; 781 return 0; 782 } 783 } 784 785 /* 786 * Iterate the routing table and locate the next hop. 787 */ 788 static struct ieee80211_node * 789 mesh_find_txnode(struct ieee80211vap *vap, 790 const uint8_t dest[IEEE80211_ADDR_LEN]) 791 { 792 struct ieee80211_mesh_route *rt; 793 794 rt = ieee80211_mesh_rt_find(vap, dest); 795 if (rt == NULL) 796 return NULL; 797 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 798 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 799 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 800 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 801 /* XXX stat */ 802 return NULL; 803 } 804 return ieee80211_find_txnode(vap, rt->rt_nexthop); 805 } 806 807 /* 808 * Forward the specified frame. 809 * Decrement the TTL and set TA to our MAC address. 810 */ 811 static void 812 mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 813 const struct ieee80211_meshcntl *mc) 814 { 815 struct ieee80211com *ic = vap->iv_ic; 816 struct ieee80211_mesh_state *ms = vap->iv_mesh; 817 struct ifnet *ifp = vap->iv_ifp; 818 struct ifnet *parent = ic->ic_ifp; 819 const struct ieee80211_frame *wh = 820 mtod(m, const struct ieee80211_frame *); 821 struct mbuf *mcopy; 822 struct ieee80211_meshcntl *mccopy; 823 struct ieee80211_frame *whcopy; 824 struct ieee80211_node *ni; 825 int err; 826 827 if (mc->mc_ttl == 0) { 828 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 829 "%s", "frame not fwd'd, ttl 0"); 830 vap->iv_stats.is_mesh_fwd_ttl++; 831 return; 832 } 833 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 834 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 835 "%s", "frame not fwd'd, fwding disabled"); 836 vap->iv_stats.is_mesh_fwd_disabled++; 837 return; 838 } 839 mcopy = m_dup(m, MB_DONTWAIT); 840 if (mcopy == NULL) { 841 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 842 "%s", "frame not fwd'd, cannot dup"); 843 vap->iv_stats.is_mesh_fwd_nobuf++; 844 ifp->if_oerrors++; 845 return; 846 } 847 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 848 sizeof(struct ieee80211_meshcntl)); 849 if (mcopy == NULL) { 850 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 851 "%s", "frame not fwd'd, too short"); 852 vap->iv_stats.is_mesh_fwd_tooshort++; 853 ifp->if_oerrors++; 854 m_freem(mcopy); 855 return; 856 } 857 whcopy = mtod(mcopy, struct ieee80211_frame *); 858 mccopy = (struct ieee80211_meshcntl *) 859 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 860 /* XXX clear other bits? */ 861 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 862 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 863 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 864 ni = ieee80211_ref_node(vap->iv_bss); 865 mcopy->m_flags |= M_MCAST; 866 } else { 867 ni = mesh_find_txnode(vap, whcopy->i_addr3); 868 if (ni == NULL) { 869 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 870 "%s", "frame not fwd'd, no path"); 871 vap->iv_stats.is_mesh_fwd_nopath++; 872 m_freem(mcopy); 873 return; 874 } 875 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 876 } 877 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 878 mccopy->mc_ttl--; 879 880 /* XXX calculate priority so drivers can find the tx queue */ 881 M_WME_SETAC(mcopy, WME_AC_BE); 882 883 /* XXX do we know m_nextpkt is NULL? */ 884 mcopy->m_pkthdr.rcvif = (void *) ni; 885 err = ieee80211_handoff(parent, mcopy); 886 if (err != 0) { 887 /* NB: IFQ_HANDOFF reclaims mbuf */ 888 ieee80211_free_node(ni); 889 } else { 890 ifp->if_opackets++; 891 } 892 } 893 894 static struct mbuf * 895 mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 896 { 897 #define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 898 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 899 sizeof(struct ieee80211_meshcntl_ae11)]; 900 const struct ieee80211_qosframe_addr4 *wh; 901 const struct ieee80211_meshcntl_ae10 *mc; 902 struct ether_header *eh; 903 struct llc *llc; 904 int ae; 905 906 if (m->m_len < hdrlen + sizeof(*llc) && 907 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 908 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 909 "discard data frame: %s", "m_pullup failed"); 910 vap->iv_stats.is_rx_tooshort++; 911 return NULL; 912 } 913 memcpy(b, mtod(m, caddr_t), hdrlen); 914 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 915 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 916 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 917 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 918 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 919 920 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 921 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 922 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 923 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 924 !(llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 925 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 926 llc = NULL; 927 } else { 928 m_adj(m, hdrlen - sizeof(*eh)); 929 } 930 eh = mtod(m, struct ether_header *); 931 ae = mc->mc_flags & 3; 932 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 933 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 934 if (ae == 0) { 935 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 936 } else if (ae == 1) { 937 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 938 } else { 939 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 940 (const struct ieee80211_frame *)wh, NULL, 941 "bad AE %d", ae); 942 vap->iv_stats.is_mesh_badae++; 943 m_freem(m); 944 return NULL; 945 } 946 } else { 947 if (ae == 0) { 948 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 949 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 950 } else if (ae == 2) { 951 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 952 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 953 } else { 954 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 955 (const struct ieee80211_frame *)wh, NULL, 956 "bad AE %d", ae); 957 vap->iv_stats.is_mesh_badae++; 958 m_freem(m); 959 return NULL; 960 } 961 } 962 #ifdef ALIGNED_POINTER 963 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 964 m = ieee80211_realign(vap, m, sizeof(*eh)); 965 if (m == NULL) 966 return NULL; 967 } 968 #endif /* ALIGNED_POINTER */ 969 if (llc != NULL) { 970 eh = mtod(m, struct ether_header *); 971 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 972 } 973 return m; 974 #undef WDIR 975 } 976 977 /* 978 * Return non-zero if the unicast mesh data frame should be processed 979 * locally. Frames that are not proxy'd have our address, otherwise 980 * we need to consult the routing table to look for a proxy entry. 981 */ 982 static __inline int 983 mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 984 const struct ieee80211_meshcntl *mc) 985 { 986 int ae = mc->mc_flags & 3; 987 988 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 989 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 990 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 991 if (ae == 2) { /* ucast w/ proxy */ 992 const struct ieee80211_meshcntl_ae10 *mc10 = 993 (const struct ieee80211_meshcntl_ae10 *) mc; 994 struct ieee80211_mesh_route *rt = 995 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 996 /* check for proxy route to ourself */ 997 return (rt != NULL && 998 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 999 } else /* ucast w/o proxy */ 1000 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1001 } 1002 1003 static int 1004 mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1005 { 1006 #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1007 #define HAS_SEQ(type) ((type & 0x4) == 0) 1008 struct ieee80211vap *vap = ni->ni_vap; 1009 struct ieee80211com *ic = ni->ni_ic; 1010 struct ifnet *ifp = vap->iv_ifp; 1011 struct ieee80211_frame *wh; 1012 const struct ieee80211_meshcntl *mc; 1013 int hdrspace, meshdrlen, need_tap; 1014 uint8_t dir, type, subtype, qos; 1015 uint32_t seq; 1016 uint8_t *addr; 1017 ieee80211_seq rxseq; 1018 char ethstr[ETHER_ADDRSTRLEN + 1]; 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 %s rssi %d\n", 1234 ieee80211_mgt_subtype_name[subtype >> 1235 IEEE80211_FC0_SUBTYPE_SHIFT], 1236 kether_ntoa(wh->i_addr2, ethstr), 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 char ethstr[ETHER_ADDRSTRLEN + 1]; 1884 1885 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1886 "send PEER OPEN action: localid 0x%x", args[0]); 1887 1888 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1889 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1890 ni, kether_ntoa(ni->ni_macaddr, ethstr), ieee80211_node_refcnt(ni)+1); 1891 ieee80211_ref_node(ni); 1892 1893 m = ieee80211_getmgtframe(&frm, 1894 ic->ic_headroom + sizeof(struct ieee80211_frame), 1895 sizeof(uint16_t) /* action+category */ 1896 + sizeof(uint16_t) /* capabilites */ 1897 + 2 + IEEE80211_RATE_SIZE 1898 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1899 + 2 + IEEE80211_MESHID_LEN 1900 + sizeof(struct ieee80211_meshconf_ie) 1901 + sizeof(struct ieee80211_meshpeer_ie) 1902 ); 1903 if (m != NULL) { 1904 /* 1905 * mesh peer open action frame format: 1906 * [1] category 1907 * [1] action 1908 * [2] capabilities 1909 * [tlv] rates 1910 * [tlv] xrates 1911 * [tlv] mesh id 1912 * [tlv] mesh conf 1913 * [tlv] mesh peer link mgmt 1914 */ 1915 *frm++ = category; 1916 *frm++ = action; 1917 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1918 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1919 frm = ieee80211_add_rates(frm, rs); 1920 frm = ieee80211_add_xrates(frm, rs); 1921 frm = ieee80211_add_meshid(frm, vap); 1922 frm = ieee80211_add_meshconf(frm, vap); 1923 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1924 args[0], 0, 0); 1925 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1926 return mesh_send_action(ni, m); 1927 } else { 1928 vap->iv_stats.is_tx_nobuf++; 1929 ieee80211_free_node(ni); 1930 return ENOMEM; 1931 } 1932 } 1933 1934 static int 1935 mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1936 int category, int action, void *args0) 1937 { 1938 struct ieee80211vap *vap = ni->ni_vap; 1939 struct ieee80211com *ic = ni->ni_ic; 1940 uint16_t *args = args0; 1941 const struct ieee80211_rateset *rs; 1942 struct mbuf *m; 1943 uint8_t *frm; 1944 char ethstr[ETHER_ADDRSTRLEN + 1]; 1945 1946 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1947 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1948 args[0], args[1]); 1949 1950 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1951 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1952 ni, kether_ntoa(ni->ni_macaddr, ethstr), ieee80211_node_refcnt(ni)+1); 1953 ieee80211_ref_node(ni); 1954 1955 m = ieee80211_getmgtframe(&frm, 1956 ic->ic_headroom + sizeof(struct ieee80211_frame), 1957 sizeof(uint16_t) /* action+category */ 1958 + sizeof(uint16_t) /* capabilites */ 1959 + sizeof(uint16_t) /* status code */ 1960 + sizeof(uint16_t) /* AID */ 1961 + 2 + IEEE80211_RATE_SIZE 1962 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1963 + 2 + IEEE80211_MESHID_LEN 1964 + sizeof(struct ieee80211_meshconf_ie) 1965 + sizeof(struct ieee80211_meshpeer_ie) 1966 ); 1967 if (m != NULL) { 1968 /* 1969 * mesh peer confirm action frame format: 1970 * [1] category 1971 * [1] action 1972 * [2] capabilities 1973 * [2] status code 1974 * [2] association id (peer ID) 1975 * [tlv] rates 1976 * [tlv] xrates 1977 * [tlv] mesh id 1978 * [tlv] mesh conf 1979 * [tlv] mesh peer link mgmt 1980 */ 1981 *frm++ = category; 1982 *frm++ = action; 1983 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1984 ADDSHORT(frm, 0); /* status code */ 1985 ADDSHORT(frm, args[1]); /* AID */ 1986 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1987 frm = ieee80211_add_rates(frm, rs); 1988 frm = ieee80211_add_xrates(frm, rs); 1989 frm = ieee80211_add_meshid(frm, vap); 1990 frm = ieee80211_add_meshconf(frm, vap); 1991 frm = ieee80211_add_meshpeer(frm, 1992 IEEE80211_MESH_PEER_LINK_CONFIRM, 1993 args[0], args[1], 0); 1994 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1995 return mesh_send_action(ni, m); 1996 } else { 1997 vap->iv_stats.is_tx_nobuf++; 1998 ieee80211_free_node(ni); 1999 return ENOMEM; 2000 } 2001 } 2002 2003 static int 2004 mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2005 int category, int action, void *args0) 2006 { 2007 struct ieee80211vap *vap = ni->ni_vap; 2008 struct ieee80211com *ic = ni->ni_ic; 2009 uint16_t *args = args0; 2010 struct mbuf *m; 2011 uint8_t *frm; 2012 char ethstr[ETHER_ADDRSTRLEN + 1]; 2013 2014 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2015 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2016 args[0], args[1], args[2]); 2017 2018 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2019 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2020 ni, kether_ntoa(ni->ni_macaddr, ethstr), ieee80211_node_refcnt(ni)+1); 2021 ieee80211_ref_node(ni); 2022 2023 m = ieee80211_getmgtframe(&frm, 2024 ic->ic_headroom + sizeof(struct ieee80211_frame), 2025 sizeof(uint16_t) /* action+category */ 2026 + sizeof(uint16_t) /* reason code */ 2027 + 2 + IEEE80211_MESHID_LEN 2028 + sizeof(struct ieee80211_meshpeer_ie) 2029 ); 2030 if (m != NULL) { 2031 /* 2032 * mesh peer close action frame format: 2033 * [1] category 2034 * [1] action 2035 * [2] reason code 2036 * [tlv] mesh id 2037 * [tlv] mesh peer link mgmt 2038 */ 2039 *frm++ = category; 2040 *frm++ = action; 2041 ADDSHORT(frm, args[2]); /* reason code */ 2042 frm = ieee80211_add_meshid(frm, vap); 2043 frm = ieee80211_add_meshpeer(frm, 2044 IEEE80211_MESH_PEER_LINK_CLOSE, 2045 args[0], args[1], args[2]); 2046 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2047 return mesh_send_action(ni, m); 2048 } else { 2049 vap->iv_stats.is_tx_nobuf++; 2050 ieee80211_free_node(ni); 2051 return ENOMEM; 2052 } 2053 } 2054 2055 static int 2056 mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2057 int category, int action, void *arg0) 2058 { 2059 struct ieee80211vap *vap = ni->ni_vap; 2060 struct ieee80211com *ic = ni->ni_ic; 2061 struct mbuf *m; 2062 uint8_t *frm; 2063 char ethstr[ETHER_ADDRSTRLEN + 1]; 2064 2065 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2066 "%s", "send LINK METRIC REQUEST action"); 2067 2068 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2069 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2070 ni, kether_ntoa(ni->ni_macaddr, ethstr), ieee80211_node_refcnt(ni)+1); 2071 ieee80211_ref_node(ni); 2072 2073 m = ieee80211_getmgtframe(&frm, 2074 ic->ic_headroom + sizeof(struct ieee80211_frame), 2075 sizeof(uint16_t) /* action+category */ 2076 ); 2077 if (m != NULL) { 2078 /* 2079 * mesh link metric request 2080 * [1] category 2081 * [1] action 2082 */ 2083 *frm++ = category; 2084 *frm++ = action; 2085 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2086 return mesh_send_action(ni, m); 2087 } else { 2088 vap->iv_stats.is_tx_nobuf++; 2089 ieee80211_free_node(ni); 2090 return ENOMEM; 2091 } 2092 } 2093 2094 static int 2095 mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2096 int category, int action, void *args0) 2097 { 2098 struct ieee80211vap *vap = ni->ni_vap; 2099 struct ieee80211com *ic = ni->ni_ic; 2100 uint32_t *metric = args0; 2101 struct mbuf *m; 2102 uint8_t *frm; 2103 char ethstr[ETHER_ADDRSTRLEN + 1]; 2104 2105 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2106 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2107 2108 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2109 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2110 ni, kether_ntoa(ni->ni_macaddr, ethstr), ieee80211_node_refcnt(ni)+1); 2111 ieee80211_ref_node(ni); 2112 2113 m = ieee80211_getmgtframe(&frm, 2114 ic->ic_headroom + sizeof(struct ieee80211_frame), 2115 sizeof(uint16_t) /* action+category */ 2116 + sizeof(struct ieee80211_meshlmetric_ie) 2117 ); 2118 if (m != NULL) { 2119 /* 2120 * mesh link metric reply 2121 * [1] category 2122 * [1] action 2123 * [tlv] mesh link metric 2124 */ 2125 *frm++ = category; 2126 *frm++ = action; 2127 frm = ieee80211_add_meshlmetric(frm, *metric); 2128 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2129 return mesh_send_action(ni, m); 2130 } else { 2131 vap->iv_stats.is_tx_nobuf++; 2132 ieee80211_free_node(ni); 2133 return ENOMEM; 2134 } 2135 } 2136 2137 static void 2138 mesh_peer_timeout_setup(struct ieee80211_node *ni) 2139 { 2140 switch (ni->ni_mlstate) { 2141 case IEEE80211_NODE_MESH_HOLDING: 2142 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2143 break; 2144 case IEEE80211_NODE_MESH_CONFIRMRCV: 2145 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2146 break; 2147 case IEEE80211_NODE_MESH_IDLE: 2148 ni->ni_mltval = 0; 2149 break; 2150 default: 2151 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2152 break; 2153 } 2154 if (ni->ni_mltval) { 2155 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2156 mesh_peer_timeout_callout, ni); 2157 } 2158 } 2159 2160 /* 2161 * Same as above but backoffs timer statisically 50%. 2162 */ 2163 static void 2164 mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2165 { 2166 uint32_t r; 2167 2168 r = karc4random(); 2169 ni->ni_mltval += r % ni->ni_mltval; 2170 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2171 mesh_peer_timeout_callout, ni); 2172 } 2173 2174 static __inline void 2175 mesh_peer_timeout_stop(struct ieee80211_node *ni) 2176 { 2177 callout_stop(&ni->ni_mltimer); 2178 } 2179 2180 /* 2181 * Mesh Peer Link Management FSM timeout handling. 2182 */ 2183 static void 2184 mesh_peer_timeout_callout(void *arg) 2185 { 2186 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2187 uint16_t args[3]; 2188 2189 wlan_serialize_enter(); 2190 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2191 ni, "mesh link timeout, state %d, retry counter %d", 2192 ni->ni_mlstate, ni->ni_mlrcnt); 2193 2194 switch (ni->ni_mlstate) { 2195 case IEEE80211_NODE_MESH_IDLE: 2196 case IEEE80211_NODE_MESH_ESTABLISHED: 2197 break; 2198 case IEEE80211_NODE_MESH_OPENSNT: 2199 case IEEE80211_NODE_MESH_OPENRCV: 2200 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2201 args[0] = ni->ni_mlpid; 2202 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2203 ieee80211_send_action(ni, 2204 IEEE80211_ACTION_CAT_MESHPEERING, 2205 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2206 ni->ni_mlrcnt = 0; 2207 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2208 mesh_peer_timeout_setup(ni); 2209 } else { 2210 args[0] = ni->ni_mlpid; 2211 ieee80211_send_action(ni, 2212 IEEE80211_ACTION_CAT_MESHPEERING, 2213 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2214 ni->ni_mlrcnt++; 2215 mesh_peer_timeout_backoff(ni); 2216 } 2217 break; 2218 case IEEE80211_NODE_MESH_CONFIRMRCV: 2219 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2220 args[0] = ni->ni_mlpid; 2221 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2222 ieee80211_send_action(ni, 2223 IEEE80211_ACTION_CAT_MESHPEERING, 2224 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2225 ni->ni_mlrcnt = 0; 2226 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2227 mesh_peer_timeout_setup(ni); 2228 } else { 2229 ni->ni_mlrcnt++; 2230 mesh_peer_timeout_setup(ni); 2231 } 2232 break; 2233 case IEEE80211_NODE_MESH_HOLDING: 2234 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2235 break; 2236 } 2237 wlan_serialize_exit(); 2238 } 2239 2240 static int 2241 mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2242 { 2243 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2244 2245 if (ie == NULL || ie[1] != ms->ms_idlen) 2246 return 1; 2247 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2248 } 2249 2250 /* 2251 * Check if we are using the same algorithms for this mesh. 2252 */ 2253 static int 2254 mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2255 { 2256 const struct ieee80211_meshconf_ie *meshconf = 2257 (const struct ieee80211_meshconf_ie *) ie; 2258 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2259 uint16_t cap; 2260 2261 if (meshconf == NULL) 2262 return 1; 2263 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2264 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2265 "unknown path selection algorithm: 0x%x\n", 2266 meshconf->conf_pselid); 2267 return 1; 2268 } 2269 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2270 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2271 "unknown path metric algorithm: 0x%x\n", 2272 meshconf->conf_pmetid); 2273 return 1; 2274 } 2275 if (meshconf->conf_ccid != 0) { 2276 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2277 "unknown congestion control algorithm: 0x%x\n", 2278 meshconf->conf_ccid); 2279 return 1; 2280 } 2281 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2282 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2283 "unknown sync algorithm: 0x%x\n", 2284 meshconf->conf_syncid); 2285 return 1; 2286 } 2287 if (meshconf->conf_authid != 0) { 2288 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2289 "unknown auth algorithm: 0x%x\n", 2290 meshconf->conf_pselid); 2291 return 1; 2292 } 2293 /* NB: conf_cap is only read correctly here */ 2294 cap = LE_READ_2(&meshconf->conf_cap); 2295 /* Not accepting peers */ 2296 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) { 2297 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2298 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2299 return 1; 2300 } 2301 return 0; 2302 } 2303 2304 static int 2305 mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2306 const uint8_t *ie) 2307 { 2308 const struct ieee80211_meshpeer_ie *meshpeer = 2309 (const struct ieee80211_meshpeer_ie *) ie; 2310 2311 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2312 meshpeer->peer_len > 10) 2313 return 1; 2314 switch (subtype) { 2315 case IEEE80211_MESH_PEER_LINK_OPEN: 2316 if (meshpeer->peer_len != 6) 2317 return 1; 2318 break; 2319 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2320 if (meshpeer->peer_len != 8) 2321 return 1; 2322 break; 2323 case IEEE80211_MESH_PEER_LINK_CLOSE: 2324 if (meshpeer->peer_len < 8) 2325 return 1; 2326 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2327 return 1; 2328 if (meshpeer->peer_rcode == 0) 2329 return 1; 2330 break; 2331 } 2332 return 0; 2333 } 2334 2335 /* 2336 * Add a Mesh ID IE to a frame. 2337 */ 2338 uint8_t * 2339 ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2340 { 2341 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2342 2343 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2344 2345 *frm++ = IEEE80211_ELEMID_MESHID; 2346 *frm++ = ms->ms_idlen; 2347 memcpy(frm, ms->ms_id, ms->ms_idlen); 2348 return frm + ms->ms_idlen; 2349 } 2350 2351 /* 2352 * Add a Mesh Configuration IE to a frame. 2353 * For now just use HWMP routing, Airtime link metric, Null Congestion 2354 * Signaling, Null Sync Protocol and Null Authentication. 2355 */ 2356 uint8_t * 2357 ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2358 { 2359 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2360 uint16_t caps; 2361 2362 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2363 2364 *frm++ = IEEE80211_ELEMID_MESHCONF; 2365 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2366 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2367 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2368 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2369 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2370 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2371 /* NB: set the number of neighbors before the rest */ 2372 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2373 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2374 *frm |= IEEE80211_MESHCONF_FORM_MP; 2375 frm += 1; 2376 caps = 0; 2377 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2378 caps |= IEEE80211_MESHCONF_CAP_AP; 2379 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2380 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2381 ADDSHORT(frm, caps); 2382 return frm; 2383 } 2384 2385 /* 2386 * Add a Mesh Peer Management IE to a frame. 2387 */ 2388 uint8_t * 2389 ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2390 uint16_t peerid, uint16_t reason) 2391 { 2392 /* XXX change for AH */ 2393 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2394 2395 KASSERT(localid != 0, ("localid == 0")); 2396 2397 *frm++ = IEEE80211_ELEMID_MESHPEER; 2398 switch (subtype) { 2399 case IEEE80211_MESH_PEER_LINK_OPEN: 2400 *frm++ = 6; /* length */ 2401 memcpy(frm, meshpeerproto, 4); 2402 frm += 4; 2403 ADDSHORT(frm, localid); /* local ID */ 2404 break; 2405 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2406 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2407 *frm++ = 8; /* length */ 2408 memcpy(frm, meshpeerproto, 4); 2409 frm += 4; 2410 ADDSHORT(frm, localid); /* local ID */ 2411 ADDSHORT(frm, peerid); /* peer ID */ 2412 break; 2413 case IEEE80211_MESH_PEER_LINK_CLOSE: 2414 if (peerid) 2415 *frm++ = 10; /* length */ 2416 else 2417 *frm++ = 8; /* length */ 2418 memcpy(frm, meshpeerproto, 4); 2419 frm += 4; 2420 ADDSHORT(frm, localid); /* local ID */ 2421 if (peerid) 2422 ADDSHORT(frm, peerid); /* peer ID */ 2423 ADDSHORT(frm, reason); 2424 break; 2425 } 2426 return frm; 2427 } 2428 2429 /* 2430 * Compute an Airtime Link Metric for the link with this node. 2431 * 2432 * Based on Draft 3.0 spec (11B.10, p.149). 2433 */ 2434 /* 2435 * Max 802.11s overhead. 2436 */ 2437 #define IEEE80211_MESH_MAXOVERHEAD \ 2438 (sizeof(struct ieee80211_qosframe_addr4) \ 2439 + sizeof(struct ieee80211_meshcntl_ae11) \ 2440 + sizeof(struct llc) \ 2441 + IEEE80211_ADDR_LEN \ 2442 + IEEE80211_WEP_IVLEN \ 2443 + IEEE80211_WEP_KIDLEN \ 2444 + IEEE80211_WEP_CRCLEN \ 2445 + IEEE80211_WEP_MICLEN \ 2446 + IEEE80211_CRC_LEN) 2447 uint32_t 2448 mesh_airtime_calc(struct ieee80211_node *ni) 2449 { 2450 #define M_BITS 8 2451 #define S_FACTOR (2 * M_BITS) 2452 struct ieee80211com *ic = ni->ni_ic; 2453 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2454 static const int nbits = 8192 << M_BITS; 2455 uint32_t overhead, rate, errrate; 2456 uint64_t res; 2457 2458 /* Time to transmit a frame */ 2459 rate = ni->ni_txrate; 2460 overhead = ieee80211_compute_duration(ic->ic_rt, 2461 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2462 /* Error rate in percentage */ 2463 /* XXX assuming small failures are ok */ 2464 errrate = (((ifp->if_oerrors + 2465 ifp->if_ierrors) / 100) << M_BITS) / 100; 2466 res = (overhead + (nbits / rate)) * 2467 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2468 2469 return (uint32_t)(res >> S_FACTOR); 2470 #undef M_BITS 2471 #undef S_FACTOR 2472 } 2473 2474 /* 2475 * Add a Mesh Link Metric report IE to a frame. 2476 */ 2477 uint8_t * 2478 ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2479 { 2480 *frm++ = IEEE80211_ELEMID_MESHLINK; 2481 *frm++ = 4; 2482 ADDWORD(frm, metric); 2483 return frm; 2484 } 2485 #undef ADDSHORT 2486 #undef ADDWORD 2487 2488 /* 2489 * Initialize any mesh-specific node state. 2490 */ 2491 void 2492 ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2493 { 2494 ni->ni_flags |= IEEE80211_NODE_QOS; 2495 callout_init_mp(&ni->ni_mltimer); 2496 } 2497 2498 /* 2499 * Cleanup any mesh-specific node state. 2500 */ 2501 void 2502 ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2503 { 2504 struct ieee80211vap *vap = ni->ni_vap; 2505 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2506 2507 callout_stop(&ni->ni_mltimer); 2508 /* NB: short-circuit callbacks after mesh_vdetach */ 2509 if (vap->iv_mesh != NULL) 2510 ms->ms_ppath->mpp_peerdown(ni); 2511 } 2512 2513 void 2514 ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2515 { 2516 ni->ni_meshidlen = ie[1]; 2517 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2518 } 2519 2520 /* 2521 * Setup mesh-specific node state on neighbor discovery. 2522 */ 2523 void 2524 ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2525 const struct ieee80211_frame *wh, 2526 const struct ieee80211_scanparams *sp) 2527 { 2528 ieee80211_parse_meshid(ni, sp->meshid); 2529 } 2530 2531 void 2532 ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2533 struct ieee80211_beacon_offsets *bo) 2534 { 2535 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2536 2537 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2538 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2539 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2540 } 2541 } 2542 2543 static int 2544 mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2545 { 2546 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2547 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2548 struct ieee80211_mesh_route *rt; 2549 struct ieee80211req_mesh_route *imr; 2550 size_t len, off; 2551 uint8_t *p; 2552 int error; 2553 2554 if (vap->iv_opmode != IEEE80211_M_MBSS) 2555 return ENOSYS; 2556 2557 error = 0; 2558 switch (ireq->i_type) { 2559 case IEEE80211_IOC_MESH_ID: 2560 ireq->i_len = ms->ms_idlen; 2561 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2562 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2563 break; 2564 case IEEE80211_IOC_MESH_AP: 2565 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2566 break; 2567 case IEEE80211_IOC_MESH_FWRD: 2568 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2569 break; 2570 case IEEE80211_IOC_MESH_TTL: 2571 ireq->i_val = ms->ms_ttl; 2572 break; 2573 case IEEE80211_IOC_MESH_RTCMD: 2574 switch (ireq->i_val) { 2575 case IEEE80211_MESH_RTCMD_LIST: 2576 len = 0; 2577 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2578 len += sizeof(*imr); 2579 } 2580 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2581 ireq->i_len = len; 2582 return ENOMEM; 2583 } 2584 ireq->i_len = len; 2585 /* XXX M_WAIT? */ 2586 p = kmalloc(len, M_TEMP, M_INTWAIT | M_ZERO); 2587 off = 0; 2588 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2589 if (off >= len) 2590 break; 2591 imr = (struct ieee80211req_mesh_route *) 2592 (p + off); 2593 imr->imr_flags = rt->rt_flags; 2594 IEEE80211_ADDR_COPY(imr->imr_dest, 2595 rt->rt_dest); 2596 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2597 rt->rt_nexthop); 2598 imr->imr_metric = rt->rt_metric; 2599 imr->imr_nhops = rt->rt_nhops; 2600 imr->imr_lifetime = rt->rt_lifetime; 2601 imr->imr_lastmseq = rt->rt_lastmseq; 2602 off += sizeof(*imr); 2603 } 2604 error = copyout(p, (uint8_t *)ireq->i_data, 2605 ireq->i_len); 2606 kfree(p, M_TEMP); 2607 break; 2608 case IEEE80211_MESH_RTCMD_FLUSH: 2609 case IEEE80211_MESH_RTCMD_ADD: 2610 case IEEE80211_MESH_RTCMD_DELETE: 2611 return EINVAL; 2612 default: 2613 return ENOSYS; 2614 } 2615 break; 2616 case IEEE80211_IOC_MESH_PR_METRIC: 2617 len = strlen(ms->ms_pmetric->mpm_descr); 2618 if (ireq->i_len < len) 2619 return EINVAL; 2620 ireq->i_len = len; 2621 error = copyout(ms->ms_pmetric->mpm_descr, 2622 (uint8_t *)ireq->i_data, len); 2623 break; 2624 case IEEE80211_IOC_MESH_PR_PATH: 2625 len = strlen(ms->ms_ppath->mpp_descr); 2626 if (ireq->i_len < len) 2627 return EINVAL; 2628 ireq->i_len = len; 2629 error = copyout(ms->ms_ppath->mpp_descr, 2630 (uint8_t *)ireq->i_data, len); 2631 break; 2632 default: 2633 return ENOSYS; 2634 } 2635 2636 return error; 2637 } 2638 IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2639 2640 static int 2641 mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2642 { 2643 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2644 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2645 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2646 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2647 int error; 2648 2649 if (vap->iv_opmode != IEEE80211_M_MBSS) 2650 return ENOSYS; 2651 2652 error = 0; 2653 switch (ireq->i_type) { 2654 case IEEE80211_IOC_MESH_ID: 2655 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2656 return EINVAL; 2657 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2658 if (error != 0) 2659 break; 2660 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2661 ms->ms_idlen = ireq->i_len; 2662 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2663 error = ENETRESET; 2664 break; 2665 case IEEE80211_IOC_MESH_AP: 2666 if (ireq->i_val) 2667 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2668 else 2669 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2670 error = ENETRESET; 2671 break; 2672 case IEEE80211_IOC_MESH_FWRD: 2673 if (ireq->i_val) 2674 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2675 else 2676 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2677 break; 2678 case IEEE80211_IOC_MESH_TTL: 2679 ms->ms_ttl = (uint8_t) ireq->i_val; 2680 break; 2681 case IEEE80211_IOC_MESH_RTCMD: 2682 switch (ireq->i_val) { 2683 case IEEE80211_MESH_RTCMD_LIST: 2684 return EINVAL; 2685 case IEEE80211_MESH_RTCMD_FLUSH: 2686 ieee80211_mesh_rt_flush(vap); 2687 break; 2688 case IEEE80211_MESH_RTCMD_ADD: 2689 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2690 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2691 return EINVAL; 2692 error = copyin(ireq->i_data, &tmpaddr, 2693 IEEE80211_ADDR_LEN); 2694 if (error == 0) 2695 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2696 break; 2697 case IEEE80211_MESH_RTCMD_DELETE: 2698 ieee80211_mesh_rt_del(vap, ireq->i_data); 2699 break; 2700 default: 2701 return ENOSYS; 2702 } 2703 break; 2704 case IEEE80211_IOC_MESH_PR_METRIC: 2705 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2706 if (error == 0) { 2707 error = mesh_select_proto_metric(vap, tmpproto); 2708 if (error == 0) 2709 error = ENETRESET; 2710 } 2711 break; 2712 case IEEE80211_IOC_MESH_PR_PATH: 2713 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2714 if (error == 0) { 2715 error = mesh_select_proto_path(vap, tmpproto); 2716 if (error == 0) 2717 error = ENETRESET; 2718 } 2719 break; 2720 default: 2721 return ENOSYS; 2722 } 2723 return error; 2724 } 2725 IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2726