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 #ifdef IEEE80211_DEBUG 521 char ethstr[ETHER_ADDRSTRLEN + 1]; 522 #endif 523 524 ostate = vap->iv_state; 525 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 526 __func__, ieee80211_state_name[ostate], 527 ieee80211_state_name[nstate], arg); 528 vap->iv_state = nstate; /* state transition */ 529 if (ostate != IEEE80211_S_SCAN) 530 ieee80211_cancel_scan(vap); /* background scan */ 531 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 532 callout_stop(&ms->ms_cleantimer); 533 switch (nstate) { 534 case IEEE80211_S_INIT: 535 switch (ostate) { 536 case IEEE80211_S_SCAN: 537 ieee80211_cancel_scan(vap); 538 break; 539 case IEEE80211_S_CAC: 540 ieee80211_dfs_cac_stop(vap); 541 break; 542 case IEEE80211_S_RUN: 543 ieee80211_iterate_nodes(&ic->ic_sta, 544 mesh_vdetach_peers, NULL); 545 break; 546 default: 547 break; 548 } 549 if (ostate != IEEE80211_S_INIT) { 550 /* NB: optimize INIT -> INIT case */ 551 ieee80211_reset_bss(vap); 552 ieee80211_mesh_rt_flush(vap); 553 } 554 break; 555 case IEEE80211_S_SCAN: 556 switch (ostate) { 557 case IEEE80211_S_INIT: 558 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 559 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 560 ms->ms_idlen != 0) { 561 /* 562 * Already have a channel and a mesh ID; bypass 563 * the scan and startup immediately. 564 */ 565 ieee80211_create_ibss(vap, vap->iv_des_chan); 566 break; 567 } 568 /* 569 * Initiate a scan. We can come here as a result 570 * of an IEEE80211_IOC_SCAN_REQ too in which case 571 * the vap will be marked with IEEE80211_FEXT_SCANREQ 572 * and the scan request parameters will be present 573 * in iv_scanreq. Otherwise we do the default. 574 */ 575 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 576 ieee80211_check_scan(vap, 577 vap->iv_scanreq_flags, 578 vap->iv_scanreq_duration, 579 vap->iv_scanreq_mindwell, 580 vap->iv_scanreq_maxdwell, 581 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 582 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 583 } else 584 ieee80211_check_scan_current(vap); 585 break; 586 default: 587 break; 588 } 589 break; 590 case IEEE80211_S_CAC: 591 /* 592 * Start CAC on a DFS channel. We come here when starting 593 * a bss on a DFS channel (see ieee80211_create_ibss). 594 */ 595 ieee80211_dfs_cac_start(vap); 596 break; 597 case IEEE80211_S_RUN: 598 switch (ostate) { 599 case IEEE80211_S_INIT: 600 /* 601 * Already have a channel; bypass the 602 * scan and startup immediately. 603 * Note that ieee80211_create_ibss will call 604 * back to do a RUN->RUN state change. 605 */ 606 ieee80211_create_ibss(vap, 607 ieee80211_ht_adjust_channel(ic, 608 ic->ic_curchan, vap->iv_flags_ht)); 609 /* NB: iv_bss is changed on return */ 610 break; 611 case IEEE80211_S_CAC: 612 /* 613 * NB: This is the normal state change when CAC 614 * expires and no radar was detected; no need to 615 * clear the CAC timer as it's already expired. 616 */ 617 /* fall thru... */ 618 case IEEE80211_S_CSA: 619 #if 0 620 /* 621 * Shorten inactivity timer of associated stations 622 * to weed out sta's that don't follow a CSA. 623 */ 624 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 625 #endif 626 /* 627 * Update bss node channel to reflect where 628 * we landed after CSA. 629 */ 630 ieee80211_node_set_chan(vap->iv_bss, 631 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 632 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 633 /* XXX bypass debug msgs */ 634 break; 635 case IEEE80211_S_SCAN: 636 case IEEE80211_S_RUN: 637 #ifdef IEEE80211_DEBUG 638 if (ieee80211_msg_debug(vap)) { 639 struct ieee80211_node *ni = vap->iv_bss; 640 ieee80211_note(vap, 641 "synchronized with %s meshid ", 642 kether_ntoa(ni->ni_meshid, ethstr)); 643 ieee80211_print_essid(ni->ni_meshid, 644 ni->ni_meshidlen); 645 /* XXX MCS/HT */ 646 kprintf(" channel %d\n", 647 ieee80211_chan2ieee(ic, ic->ic_curchan)); 648 } 649 #endif 650 break; 651 default: 652 break; 653 } 654 ieee80211_node_authorize(vap->iv_bss); 655 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 656 mesh_rt_cleanup_callout, vap); 657 break; 658 default: 659 break; 660 } 661 /* NB: ostate not nstate */ 662 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 663 return 0; 664 } 665 666 static void 667 mesh_rt_cleanup_callout(void *arg) 668 { 669 struct ieee80211vap *vap = arg; 670 struct ieee80211_mesh_state *ms = vap->iv_mesh; 671 672 wlan_serialize_enter(); 673 mesh_rt_flush_invalid(vap); 674 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 675 mesh_rt_cleanup_callout, vap); 676 wlan_serialize_exit(); 677 } 678 679 680 /* 681 * Helper function to note the Mesh Peer Link FSM change. 682 */ 683 static void 684 mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 685 { 686 struct ieee80211vap *vap = ni->ni_vap; 687 struct ieee80211_mesh_state *ms = vap->iv_mesh; 688 #ifdef IEEE80211_DEBUG 689 static const char *meshlinkstates[] = { 690 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 691 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 692 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 693 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 694 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 695 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 696 }; 697 #endif 698 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 699 ni, "peer link: %s -> %s", 700 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 701 702 /* track neighbor count */ 703 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 704 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 705 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 706 ms->ms_neighbors++; 707 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 708 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 709 state != IEEE80211_NODE_MESH_ESTABLISHED) { 710 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 711 ms->ms_neighbors--; 712 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 713 } 714 ni->ni_mlstate = state; 715 switch (state) { 716 case IEEE80211_NODE_MESH_HOLDING: 717 ms->ms_ppath->mpp_peerdown(ni); 718 break; 719 case IEEE80211_NODE_MESH_ESTABLISHED: 720 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 721 break; 722 default: 723 break; 724 } 725 } 726 727 /* 728 * Helper function to generate a unique local ID required for mesh 729 * peer establishment. 730 */ 731 static void 732 mesh_checkid(void *arg, struct ieee80211_node *ni) 733 { 734 uint16_t *r = arg; 735 736 if (*r == ni->ni_mllid) 737 *(uint16_t *)arg = 0; 738 } 739 740 static uint32_t 741 mesh_generateid(struct ieee80211vap *vap) 742 { 743 int maxiter = 4; 744 uint16_t r; 745 746 do { 747 get_random_bytes(&r, 2); 748 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 749 maxiter--; 750 } while (r == 0 && maxiter > 0); 751 return r; 752 } 753 754 /* 755 * Verifies if we already received this packet by checking its 756 * sequence number. 757 * Returns 0 if the frame is to be accepted, 1 otherwise. 758 */ 759 static int 760 mesh_checkpseq(struct ieee80211vap *vap, 761 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 762 { 763 struct ieee80211_mesh_route *rt; 764 765 rt = ieee80211_mesh_rt_find(vap, source); 766 if (rt == NULL) { 767 rt = ieee80211_mesh_rt_add(vap, source); 768 if (rt == NULL) { 769 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 770 "%s", "add mcast route failed"); 771 vap->iv_stats.is_mesh_rtaddfailed++; 772 return 1; 773 } 774 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 775 "add mcast route, mesh seqno %d", seq); 776 rt->rt_lastmseq = seq; 777 return 0; 778 } 779 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 780 return 1; 781 } else { 782 rt->rt_lastmseq = seq; 783 return 0; 784 } 785 } 786 787 /* 788 * Iterate the routing table and locate the next hop. 789 */ 790 static struct ieee80211_node * 791 mesh_find_txnode(struct ieee80211vap *vap, 792 const uint8_t dest[IEEE80211_ADDR_LEN]) 793 { 794 struct ieee80211_mesh_route *rt; 795 796 rt = ieee80211_mesh_rt_find(vap, dest); 797 if (rt == NULL) 798 return NULL; 799 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 800 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 801 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 802 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 803 /* XXX stat */ 804 return NULL; 805 } 806 return ieee80211_find_txnode(vap, rt->rt_nexthop); 807 } 808 809 /* 810 * Forward the specified frame. 811 * Decrement the TTL and set TA to our MAC address. 812 */ 813 static void 814 mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 815 const struct ieee80211_meshcntl *mc) 816 { 817 struct ieee80211com *ic = vap->iv_ic; 818 struct ieee80211_mesh_state *ms = vap->iv_mesh; 819 struct ifnet *ifp = vap->iv_ifp; 820 struct ifnet *parent = ic->ic_ifp; 821 const struct ieee80211_frame *wh = 822 mtod(m, const struct ieee80211_frame *); 823 struct mbuf *mcopy; 824 struct ieee80211_meshcntl *mccopy; 825 struct ieee80211_frame *whcopy; 826 struct ieee80211_node *ni; 827 int err; 828 829 if (mc->mc_ttl == 0) { 830 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 831 "%s", "frame not fwd'd, ttl 0"); 832 vap->iv_stats.is_mesh_fwd_ttl++; 833 return; 834 } 835 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 836 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 837 "%s", "frame not fwd'd, fwding disabled"); 838 vap->iv_stats.is_mesh_fwd_disabled++; 839 return; 840 } 841 mcopy = m_dup(m, MB_DONTWAIT); 842 if (mcopy == NULL) { 843 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 844 "%s", "frame not fwd'd, cannot dup"); 845 vap->iv_stats.is_mesh_fwd_nobuf++; 846 IFNET_STAT_INC(ifp, oerrors, 1); 847 return; 848 } 849 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 850 sizeof(struct ieee80211_meshcntl)); 851 if (mcopy == NULL) { 852 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 853 "%s", "frame not fwd'd, too short"); 854 vap->iv_stats.is_mesh_fwd_tooshort++; 855 IFNET_STAT_INC(ifp, oerrors, 1); 856 m_freem(mcopy); 857 return; 858 } 859 whcopy = mtod(mcopy, struct ieee80211_frame *); 860 mccopy = (struct ieee80211_meshcntl *) 861 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 862 /* XXX clear other bits? */ 863 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 864 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 865 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 866 ni = ieee80211_ref_node(vap->iv_bss); 867 mcopy->m_flags |= M_MCAST; 868 } else { 869 ni = mesh_find_txnode(vap, whcopy->i_addr3); 870 if (ni == NULL) { 871 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 872 "%s", "frame not fwd'd, no path"); 873 vap->iv_stats.is_mesh_fwd_nopath++; 874 m_freem(mcopy); 875 return; 876 } 877 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 878 } 879 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 880 mccopy->mc_ttl--; 881 882 /* XXX calculate priority so drivers can find the tx queue */ 883 M_WME_SETAC(mcopy, WME_AC_BE); 884 885 /* XXX do we know m_nextpkt is NULL? */ 886 mcopy->m_pkthdr.rcvif = (void *) ni; 887 err = ieee80211_handoff(parent, mcopy); 888 if (err != 0) { 889 /* NB: IFQ_HANDOFF reclaims mbuf */ 890 ieee80211_free_node(ni); 891 } else { 892 IFNET_STAT_INC(ifp, opackets, 1); 893 } 894 } 895 896 static struct mbuf * 897 mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 898 { 899 #define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 900 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 901 sizeof(struct ieee80211_meshcntl_ae11)]; 902 const struct ieee80211_qosframe_addr4 *wh; 903 const struct ieee80211_meshcntl_ae10 *mc; 904 struct ether_header *eh; 905 struct llc *llc; 906 int ae; 907 908 if (m->m_len < hdrlen + sizeof(*llc) && 909 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 910 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 911 "discard data frame: %s", "m_pullup failed"); 912 vap->iv_stats.is_rx_tooshort++; 913 return NULL; 914 } 915 memcpy(b, mtod(m, caddr_t), hdrlen); 916 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 917 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 918 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 919 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 920 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 921 922 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 923 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 924 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 925 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 926 !(llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 927 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 928 llc = NULL; 929 } else { 930 m_adj(m, hdrlen - sizeof(*eh)); 931 } 932 eh = mtod(m, struct ether_header *); 933 ae = mc->mc_flags & 3; 934 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 935 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 936 if (ae == 0) { 937 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 938 } else if (ae == 1) { 939 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 940 } else { 941 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 942 (const struct ieee80211_frame *)wh, NULL, 943 "bad AE %d", ae); 944 vap->iv_stats.is_mesh_badae++; 945 m_freem(m); 946 return NULL; 947 } 948 } else { 949 if (ae == 0) { 950 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 951 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 952 } else if (ae == 2) { 953 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 954 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 955 } else { 956 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 957 (const struct ieee80211_frame *)wh, NULL, 958 "bad AE %d", ae); 959 vap->iv_stats.is_mesh_badae++; 960 m_freem(m); 961 return NULL; 962 } 963 } 964 #ifdef ALIGNED_POINTER 965 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 966 m = ieee80211_realign(vap, m, sizeof(*eh)); 967 if (m == NULL) 968 return NULL; 969 } 970 #endif /* ALIGNED_POINTER */ 971 if (llc != NULL) { 972 eh = mtod(m, struct ether_header *); 973 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 974 } 975 return m; 976 #undef WDIR 977 } 978 979 /* 980 * Return non-zero if the unicast mesh data frame should be processed 981 * locally. Frames that are not proxy'd have our address, otherwise 982 * we need to consult the routing table to look for a proxy entry. 983 */ 984 static __inline int 985 mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 986 const struct ieee80211_meshcntl *mc) 987 { 988 int ae = mc->mc_flags & 3; 989 990 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 991 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 992 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 993 if (ae == 2) { /* ucast w/ proxy */ 994 const struct ieee80211_meshcntl_ae10 *mc10 = 995 (const struct ieee80211_meshcntl_ae10 *) mc; 996 struct ieee80211_mesh_route *rt = 997 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 998 /* check for proxy route to ourself */ 999 return (rt != NULL && 1000 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1001 } else /* ucast w/o proxy */ 1002 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1003 } 1004 1005 static int 1006 mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1007 { 1008 #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1009 #define HAS_SEQ(type) ((type & 0x4) == 0) 1010 struct ieee80211vap *vap = ni->ni_vap; 1011 struct ieee80211com *ic = ni->ni_ic; 1012 struct ifnet *ifp = vap->iv_ifp; 1013 struct ieee80211_frame *wh; 1014 const struct ieee80211_meshcntl *mc; 1015 int hdrspace, meshdrlen, need_tap; 1016 uint8_t dir, type, subtype, qos; 1017 uint32_t seq; 1018 uint8_t *addr; 1019 ieee80211_seq rxseq; 1020 #ifdef IEEE80211_DEBUG 1021 char ethstr[ETHER_ADDRSTRLEN + 1]; 1022 #endif 1023 1024 KASSERT(ni != NULL, ("null node")); 1025 ni->ni_inact = ni->ni_inact_reload; 1026 1027 need_tap = 1; /* mbuf need to be tapped. */ 1028 type = -1; /* undefined */ 1029 1030 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1031 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1032 ni->ni_macaddr, NULL, 1033 "too short (1): len %u", m->m_pkthdr.len); 1034 vap->iv_stats.is_rx_tooshort++; 1035 goto out; 1036 } 1037 /* 1038 * Bit of a cheat here, we use a pointer for a 3-address 1039 * frame format but don't reference fields past outside 1040 * ieee80211_frame_min w/o first validating the data is 1041 * present. 1042 */ 1043 wh = mtod(m, struct ieee80211_frame *); 1044 1045 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1046 IEEE80211_FC0_VERSION_0) { 1047 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1048 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1049 vap->iv_stats.is_rx_badversion++; 1050 goto err; 1051 } 1052 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1053 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1054 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1055 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1056 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1057 ni->ni_noise = nf; 1058 if (HAS_SEQ(type)) { 1059 uint8_t tid = ieee80211_gettid(wh); 1060 1061 if (IEEE80211_QOS_HAS_SEQ(wh) && 1062 TID_TO_WME_AC(tid) >= WME_AC_VI) 1063 ic->ic_wme.wme_hipri_traffic++; 1064 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1065 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1066 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1067 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1068 /* duplicate, discard */ 1069 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1070 wh->i_addr1, "duplicate", 1071 "seqno <%u,%u> fragno <%u,%u> tid %u", 1072 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1073 ni->ni_rxseqs[tid] >> 1074 IEEE80211_SEQ_SEQ_SHIFT, 1075 rxseq & IEEE80211_SEQ_FRAG_MASK, 1076 ni->ni_rxseqs[tid] & 1077 IEEE80211_SEQ_FRAG_MASK, 1078 tid); 1079 vap->iv_stats.is_rx_dup++; 1080 IEEE80211_NODE_STAT(ni, rx_dup); 1081 goto out; 1082 } 1083 ni->ni_rxseqs[tid] = rxseq; 1084 } 1085 } 1086 #ifdef IEEE80211_DEBUG 1087 /* 1088 * It's easier, but too expensive, to simulate different mesh 1089 * topologies by consulting the ACL policy very early, so do this 1090 * only under DEBUG. 1091 * 1092 * NB: this check is also done upon peering link initiation. 1093 */ 1094 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1095 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1096 wh, NULL, "%s", "disallowed by ACL"); 1097 vap->iv_stats.is_rx_acl++; 1098 goto out; 1099 } 1100 #endif 1101 switch (type) { 1102 case IEEE80211_FC0_TYPE_DATA: 1103 if (ni == vap->iv_bss) 1104 goto out; 1105 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1106 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1107 ni->ni_macaddr, NULL, 1108 "peer link not yet established (%d)", 1109 ni->ni_mlstate); 1110 vap->iv_stats.is_mesh_nolink++; 1111 goto out; 1112 } 1113 if (dir != IEEE80211_FC1_DIR_FROMDS && 1114 dir != IEEE80211_FC1_DIR_DSTODS) { 1115 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1116 wh, "data", "incorrect dir 0x%x", dir); 1117 vap->iv_stats.is_rx_wrongdir++; 1118 goto err; 1119 } 1120 /* pull up enough to get to the mesh control */ 1121 hdrspace = ieee80211_hdrspace(ic, wh); 1122 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1123 (m = m_pullup(m, hdrspace + 1124 sizeof(struct ieee80211_meshcntl))) == NULL) { 1125 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1126 ni->ni_macaddr, NULL, 1127 "data too short: expecting %u", hdrspace); 1128 vap->iv_stats.is_rx_tooshort++; 1129 goto out; /* XXX */ 1130 } 1131 /* 1132 * Now calculate the full extent of the headers. Note 1133 * mesh_decap will pull up anything we didn't get 1134 * above when it strips the 802.11 headers. 1135 */ 1136 mc = (const struct ieee80211_meshcntl *) 1137 (mtod(m, const uint8_t *) + hdrspace); 1138 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1139 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1140 hdrspace += meshdrlen; 1141 seq = LE_READ_4(mc->mc_seq); 1142 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1143 addr = wh->i_addr3; 1144 else 1145 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1146 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1147 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1148 addr, "data", "%s", "not to me"); 1149 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1150 goto out; 1151 } 1152 if (mesh_checkpseq(vap, addr, seq) != 0) { 1153 vap->iv_stats.is_rx_dup++; 1154 goto out; 1155 } 1156 1157 /* 1158 * Potentially forward packet. See table s36 (p140) 1159 * for the rules. XXX tap fwd'd packets not for us? 1160 */ 1161 if (dir == IEEE80211_FC1_DIR_FROMDS || 1162 !mesh_isucastforme(vap, wh, mc)) { 1163 mesh_forward(vap, m, mc); 1164 if (dir == IEEE80211_FC1_DIR_DSTODS) 1165 goto out; 1166 /* NB: fall thru to deliver mcast frames locally */ 1167 } 1168 1169 /* 1170 * Save QoS bits for use below--before we strip the header. 1171 */ 1172 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1173 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1174 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1175 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1176 } else 1177 qos = 0; 1178 /* 1179 * Next up, any fragmentation. 1180 */ 1181 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1182 m = ieee80211_defrag(ni, m, hdrspace); 1183 if (m == NULL) { 1184 /* Fragment dropped or frame not complete yet */ 1185 goto out; 1186 } 1187 } 1188 wh = NULL; /* no longer valid, catch any uses */ 1189 1190 if (ieee80211_radiotap_active_vap(vap)) 1191 ieee80211_radiotap_rx(vap, m); 1192 need_tap = 0; 1193 1194 /* 1195 * Finally, strip the 802.11 header. 1196 */ 1197 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1198 if (m == NULL) { 1199 /* XXX mask bit to check for both */ 1200 /* don't count Null data frames as errors */ 1201 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1202 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1203 goto out; 1204 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1205 ni->ni_macaddr, "data", "%s", "decap error"); 1206 vap->iv_stats.is_rx_decap++; 1207 IEEE80211_NODE_STAT(ni, rx_decap); 1208 goto err; 1209 } 1210 if (qos & IEEE80211_QOS_AMSDU) { 1211 m = ieee80211_decap_amsdu(ni, m); 1212 if (m == NULL) 1213 return IEEE80211_FC0_TYPE_DATA; 1214 } 1215 ieee80211_deliver_data(vap, ni, m); 1216 return type; 1217 case IEEE80211_FC0_TYPE_MGT: 1218 vap->iv_stats.is_rx_mgmt++; 1219 IEEE80211_NODE_STAT(ni, rx_mgmt); 1220 if (dir != IEEE80211_FC1_DIR_NODS) { 1221 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1222 wh, "mgt", "incorrect dir 0x%x", dir); 1223 vap->iv_stats.is_rx_wrongdir++; 1224 goto err; 1225 } 1226 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1227 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1228 ni->ni_macaddr, "mgt", "too short: len %u", 1229 m->m_pkthdr.len); 1230 vap->iv_stats.is_rx_tooshort++; 1231 goto out; 1232 } 1233 #ifdef IEEE80211_DEBUG 1234 if ((ieee80211_msg_debug(vap) && 1235 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1236 ieee80211_msg_dumppkts(vap)) { 1237 if_printf(ifp, "received %s from %s rssi %d\n", 1238 ieee80211_mgt_subtype_name[subtype >> 1239 IEEE80211_FC0_SUBTYPE_SHIFT], 1240 kether_ntoa(wh->i_addr2, ethstr), rssi); 1241 } 1242 #endif 1243 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1244 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1245 wh, NULL, "%s", "WEP set but not permitted"); 1246 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1247 goto out; 1248 } 1249 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1250 goto out; 1251 case IEEE80211_FC0_TYPE_CTL: 1252 vap->iv_stats.is_rx_ctl++; 1253 IEEE80211_NODE_STAT(ni, rx_ctrl); 1254 goto out; 1255 default: 1256 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1257 wh, "bad", "frame type 0x%x", type); 1258 /* should not come here */ 1259 break; 1260 } 1261 err: 1262 IFNET_STAT_INC(ifp, ierrors, 1); 1263 out: 1264 if (m != NULL) { 1265 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1266 ieee80211_radiotap_rx(vap, m); 1267 m_freem(m); 1268 } 1269 return type; 1270 } 1271 1272 static void 1273 mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1274 int rssi, int nf) 1275 { 1276 struct ieee80211vap *vap = ni->ni_vap; 1277 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1278 struct ieee80211com *ic = ni->ni_ic; 1279 struct ieee80211_frame *wh; 1280 uint8_t *frm, *efrm; 1281 1282 wh = mtod(m0, struct ieee80211_frame *); 1283 frm = (uint8_t *)&wh[1]; 1284 efrm = mtod(m0, uint8_t *) + m0->m_len; 1285 switch (subtype) { 1286 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1287 case IEEE80211_FC0_SUBTYPE_BEACON: 1288 { 1289 struct ieee80211_scanparams scan; 1290 /* 1291 * We process beacon/probe response 1292 * frames to discover neighbors. 1293 */ 1294 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1295 return; 1296 /* 1297 * Count frame now that we know it's to be processed. 1298 */ 1299 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1300 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1301 IEEE80211_NODE_STAT(ni, rx_beacons); 1302 } else 1303 IEEE80211_NODE_STAT(ni, rx_proberesp); 1304 /* 1305 * If scanning, just pass information to the scan module. 1306 */ 1307 if (ic->ic_flags & IEEE80211_F_SCAN) { 1308 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1309 /* 1310 * Actively scanning a channel marked passive; 1311 * send a probe request now that we know there 1312 * is 802.11 traffic present. 1313 * 1314 * XXX check if the beacon we recv'd gives 1315 * us what we need and suppress the probe req 1316 */ 1317 ieee80211_probe_curchan(vap, 1); 1318 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1319 } 1320 ieee80211_add_scan(vap, &scan, wh, 1321 subtype, rssi, nf); 1322 return; 1323 } 1324 1325 /* The rest of this code assumes we are running */ 1326 if (vap->iv_state != IEEE80211_S_RUN) 1327 return; 1328 /* 1329 * Ignore non-mesh STAs. 1330 */ 1331 if ((scan.capinfo & 1332 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1333 scan.meshid == NULL || scan.meshconf == NULL) { 1334 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1335 wh, "beacon", "%s", "not a mesh sta"); 1336 vap->iv_stats.is_mesh_wrongmesh++; 1337 return; 1338 } 1339 /* 1340 * Ignore STAs for other mesh networks. 1341 */ 1342 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1343 mesh_verify_meshconf(vap, scan.meshconf)) { 1344 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1345 wh, "beacon", "%s", "not for our mesh"); 1346 vap->iv_stats.is_mesh_wrongmesh++; 1347 return; 1348 } 1349 /* 1350 * Peer only based on the current ACL policy. 1351 */ 1352 if (vap->iv_acl != NULL && 1353 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1354 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1355 wh, NULL, "%s", "disallowed by ACL"); 1356 vap->iv_stats.is_rx_acl++; 1357 return; 1358 } 1359 /* 1360 * Do neighbor discovery. 1361 */ 1362 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1363 /* 1364 * Create a new entry in the neighbor table. 1365 */ 1366 ni = ieee80211_add_neighbor(vap, wh, &scan); 1367 } 1368 /* 1369 * Automatically peer with discovered nodes if possible. 1370 * XXX backoff on repeated failure 1371 */ 1372 if (ni != vap->iv_bss && 1373 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1374 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1375 uint16_t args[1]; 1376 1377 ni->ni_mlpid = mesh_generateid(vap); 1378 if (ni->ni_mlpid == 0) 1379 return; 1380 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1381 args[0] = ni->ni_mlpid; 1382 ieee80211_send_action(ni, 1383 IEEE80211_ACTION_CAT_MESHPEERING, 1384 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1385 ni->ni_mlrcnt = 0; 1386 mesh_peer_timeout_setup(ni); 1387 } 1388 break; 1389 } 1390 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1391 { 1392 uint8_t *ssid, *meshid, *rates, *xrates; 1393 1394 if (vap->iv_state != IEEE80211_S_RUN) { 1395 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1396 wh, NULL, "wrong state %s", 1397 ieee80211_state_name[vap->iv_state]); 1398 vap->iv_stats.is_rx_mgtdiscard++; 1399 return; 1400 } 1401 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1402 /* frame must be directed */ 1403 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1404 wh, NULL, "%s", "not unicast"); 1405 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1406 return; 1407 } 1408 /* 1409 * prreq frame format 1410 * [tlv] ssid 1411 * [tlv] supported rates 1412 * [tlv] extended supported rates 1413 * [tlv] mesh id 1414 */ 1415 ssid = meshid = rates = xrates = NULL; 1416 while (efrm - frm > 1) { 1417 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1418 switch (*frm) { 1419 case IEEE80211_ELEMID_SSID: 1420 ssid = frm; 1421 break; 1422 case IEEE80211_ELEMID_RATES: 1423 rates = frm; 1424 break; 1425 case IEEE80211_ELEMID_XRATES: 1426 xrates = frm; 1427 break; 1428 case IEEE80211_ELEMID_MESHID: 1429 meshid = frm; 1430 break; 1431 } 1432 frm += frm[2] + 2; 1433 } 1434 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1435 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1436 if (xrates != NULL) 1437 IEEE80211_VERIFY_ELEMENT(xrates, 1438 IEEE80211_RATE_MAXSIZE - rates[1], return); 1439 if (meshid != NULL) { 1440 IEEE80211_VERIFY_ELEMENT(meshid, 1441 IEEE80211_MESHID_LEN, return); 1442 /* NB: meshid, not ssid */ 1443 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1444 } 1445 1446 /* XXX find a better class or define it's own */ 1447 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1448 "%s", "recv probe req"); 1449 /* 1450 * Some legacy 11b clients cannot hack a complete 1451 * probe response frame. When the request includes 1452 * only a bare-bones rate set, communicate this to 1453 * the transmit side. 1454 */ 1455 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1456 break; 1457 } 1458 case IEEE80211_FC0_SUBTYPE_ACTION: 1459 if (vap->iv_state != IEEE80211_S_RUN) { 1460 vap->iv_stats.is_rx_mgtdiscard++; 1461 break; 1462 } 1463 /* 1464 * We received an action for an unknown neighbor. 1465 * XXX: wait for it to beacon or create ieee80211_node? 1466 */ 1467 if (ni == vap->iv_bss) { 1468 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1469 wh, NULL, "%s", "unknown node"); 1470 vap->iv_stats.is_rx_mgtdiscard++; 1471 break; 1472 } 1473 /* 1474 * Discard if not for us. 1475 */ 1476 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1477 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1478 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1479 wh, NULL, "%s", "not for me"); 1480 vap->iv_stats.is_rx_mgtdiscard++; 1481 break; 1482 } 1483 /* XXX parse_action is a bit useless now */ 1484 if (ieee80211_parse_action(ni, m0) == 0) 1485 ic->ic_recv_action(ni, wh, frm, efrm); 1486 break; 1487 case IEEE80211_FC0_SUBTYPE_AUTH: 1488 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1489 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1490 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1491 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1492 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1493 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1494 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1495 wh, NULL, "%s", "not handled"); 1496 vap->iv_stats.is_rx_mgtdiscard++; 1497 return; 1498 default: 1499 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1500 wh, "mgt", "subtype 0x%x not handled", subtype); 1501 vap->iv_stats.is_rx_badsubtype++; 1502 break; 1503 } 1504 } 1505 1506 /* 1507 * Parse meshpeering action ie's for open+confirm frames; the 1508 * important bits are returned in the supplied structure. 1509 */ 1510 static const struct ieee80211_meshpeer_ie * 1511 mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1512 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1513 const uint8_t *frm, const uint8_t *efrm, 1514 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1515 { 1516 struct ieee80211vap *vap = ni->ni_vap; 1517 const struct ieee80211_meshpeer_ie *mpie; 1518 const uint8_t *meshid, *meshconf, *meshpeer; 1519 1520 meshid = meshconf = meshpeer = NULL; 1521 while (efrm - frm > 1) { 1522 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1523 switch (*frm) { 1524 case IEEE80211_ELEMID_MESHID: 1525 meshid = frm; 1526 break; 1527 case IEEE80211_ELEMID_MESHCONF: 1528 meshconf = frm; 1529 break; 1530 case IEEE80211_ELEMID_MESHPEER: 1531 meshpeer = frm; 1532 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1533 memset(mp, 0, sizeof(*mp)); 1534 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1535 /* NB: peer link ID is optional on these frames */ 1536 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1537 mpie->peer_len == 8) { 1538 mp->peer_linkid = 0; 1539 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1540 } else { 1541 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1542 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1543 } 1544 break; 1545 } 1546 frm += frm[1] + 2; 1547 } 1548 1549 /* 1550 * Verify the contents of the frame. Action frames with 1551 * close subtype don't have a Mesh Configuration IE. 1552 * If if fails validation, close the peer link. 1553 */ 1554 KASSERT(meshpeer != NULL && 1555 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1556 ("parsing close action")); 1557 1558 if (mesh_verify_meshid(vap, meshid) || 1559 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1560 mesh_verify_meshconf(vap, meshconf)) { 1561 uint16_t args[3]; 1562 1563 IEEE80211_DISCARD(vap, 1564 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1565 wh, NULL, "%s", "not for our mesh"); 1566 vap->iv_stats.is_rx_mgtdiscard++; 1567 switch (ni->ni_mlstate) { 1568 case IEEE80211_NODE_MESH_IDLE: 1569 case IEEE80211_NODE_MESH_ESTABLISHED: 1570 case IEEE80211_NODE_MESH_HOLDING: 1571 /* ignore */ 1572 break; 1573 case IEEE80211_NODE_MESH_OPENSNT: 1574 case IEEE80211_NODE_MESH_OPENRCV: 1575 case IEEE80211_NODE_MESH_CONFIRMRCV: 1576 args[0] = ni->ni_mlpid; 1577 args[1] = ni->ni_mllid; 1578 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1579 ieee80211_send_action(ni, 1580 IEEE80211_ACTION_CAT_MESHPEERING, 1581 IEEE80211_ACTION_MESHPEERING_CLOSE, 1582 args); 1583 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1584 mesh_peer_timeout_setup(ni); 1585 break; 1586 } 1587 return NULL; 1588 } 1589 return (const struct ieee80211_meshpeer_ie *) mp; 1590 } 1591 1592 static int 1593 mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1594 const struct ieee80211_frame *wh, 1595 const uint8_t *frm, const uint8_t *efrm) 1596 { 1597 struct ieee80211vap *vap = ni->ni_vap; 1598 struct ieee80211_meshpeer_ie ie; 1599 const struct ieee80211_meshpeer_ie *meshpeer; 1600 uint16_t args[3]; 1601 1602 /* +2+2 for action + code + capabilites */ 1603 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1604 IEEE80211_ACTION_MESHPEERING_OPEN); 1605 if (meshpeer == NULL) { 1606 return 0; 1607 } 1608 1609 /* XXX move up */ 1610 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1611 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1612 1613 switch (ni->ni_mlstate) { 1614 case IEEE80211_NODE_MESH_IDLE: 1615 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1616 ni->ni_mllid = meshpeer->peer_llinkid; 1617 ni->ni_mlpid = mesh_generateid(vap); 1618 if (ni->ni_mlpid == 0) 1619 return 0; /* XXX */ 1620 args[0] = ni->ni_mlpid; 1621 /* Announce we're open too... */ 1622 ieee80211_send_action(ni, 1623 IEEE80211_ACTION_CAT_MESHPEERING, 1624 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1625 /* ...and confirm the link. */ 1626 args[0] = ni->ni_mlpid; 1627 args[1] = ni->ni_mllid; 1628 ieee80211_send_action(ni, 1629 IEEE80211_ACTION_CAT_MESHPEERING, 1630 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1631 args); 1632 mesh_peer_timeout_setup(ni); 1633 break; 1634 case IEEE80211_NODE_MESH_OPENRCV: 1635 /* Wrong Link ID */ 1636 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1637 args[0] = ni->ni_mllid; 1638 args[1] = ni->ni_mlpid; 1639 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1640 ieee80211_send_action(ni, 1641 IEEE80211_ACTION_CAT_MESHPEERING, 1642 IEEE80211_ACTION_MESHPEERING_CLOSE, 1643 args); 1644 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1645 mesh_peer_timeout_setup(ni); 1646 break; 1647 } 1648 /* Duplicate open, confirm again. */ 1649 args[0] = ni->ni_mlpid; 1650 args[1] = ni->ni_mllid; 1651 ieee80211_send_action(ni, 1652 IEEE80211_ACTION_CAT_MESHPEERING, 1653 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1654 args); 1655 break; 1656 case IEEE80211_NODE_MESH_OPENSNT: 1657 ni->ni_mllid = meshpeer->peer_llinkid; 1658 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1659 args[0] = ni->ni_mlpid; 1660 args[1] = ni->ni_mllid; 1661 ieee80211_send_action(ni, 1662 IEEE80211_ACTION_CAT_MESHPEERING, 1663 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1664 args); 1665 /* NB: don't setup/clear any timeout */ 1666 break; 1667 case IEEE80211_NODE_MESH_CONFIRMRCV: 1668 if (ni->ni_mlpid != meshpeer->peer_linkid || 1669 ni->ni_mllid != meshpeer->peer_llinkid) { 1670 args[0] = ni->ni_mlpid; 1671 args[1] = ni->ni_mllid; 1672 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1673 ieee80211_send_action(ni, 1674 IEEE80211_ACTION_CAT_MESHPEERING, 1675 IEEE80211_ACTION_MESHPEERING_CLOSE, 1676 args); 1677 mesh_linkchange(ni, 1678 IEEE80211_NODE_MESH_HOLDING); 1679 mesh_peer_timeout_setup(ni); 1680 break; 1681 } 1682 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1683 ni->ni_mllid = meshpeer->peer_llinkid; 1684 args[0] = ni->ni_mlpid; 1685 args[1] = ni->ni_mllid; 1686 ieee80211_send_action(ni, 1687 IEEE80211_ACTION_CAT_MESHPEERING, 1688 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1689 args); 1690 mesh_peer_timeout_stop(ni); 1691 break; 1692 case IEEE80211_NODE_MESH_ESTABLISHED: 1693 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1694 args[0] = ni->ni_mllid; 1695 args[1] = ni->ni_mlpid; 1696 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1697 ieee80211_send_action(ni, 1698 IEEE80211_ACTION_CAT_MESHPEERING, 1699 IEEE80211_ACTION_MESHPEERING_CLOSE, 1700 args); 1701 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1702 mesh_peer_timeout_setup(ni); 1703 break; 1704 } 1705 args[0] = ni->ni_mlpid; 1706 args[1] = ni->ni_mllid; 1707 ieee80211_send_action(ni, 1708 IEEE80211_ACTION_CAT_MESHPEERING, 1709 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1710 args); 1711 break; 1712 case IEEE80211_NODE_MESH_HOLDING: 1713 args[0] = ni->ni_mlpid; 1714 args[1] = meshpeer->peer_llinkid; 1715 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1716 ieee80211_send_action(ni, 1717 IEEE80211_ACTION_CAT_MESHPEERING, 1718 IEEE80211_ACTION_MESHPEERING_CLOSE, 1719 args); 1720 break; 1721 } 1722 return 0; 1723 } 1724 1725 static int 1726 mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1727 const struct ieee80211_frame *wh, 1728 const uint8_t *frm, const uint8_t *efrm) 1729 { 1730 struct ieee80211vap *vap = ni->ni_vap; 1731 struct ieee80211_meshpeer_ie ie; 1732 const struct ieee80211_meshpeer_ie *meshpeer; 1733 uint16_t args[3]; 1734 1735 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1736 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1737 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1738 if (meshpeer == NULL) { 1739 return 0; 1740 } 1741 1742 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1743 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1744 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1745 1746 switch (ni->ni_mlstate) { 1747 case IEEE80211_NODE_MESH_OPENRCV: 1748 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1749 mesh_peer_timeout_stop(ni); 1750 break; 1751 case IEEE80211_NODE_MESH_OPENSNT: 1752 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1753 break; 1754 case IEEE80211_NODE_MESH_HOLDING: 1755 args[0] = ni->ni_mlpid; 1756 args[1] = meshpeer->peer_llinkid; 1757 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1758 ieee80211_send_action(ni, 1759 IEEE80211_ACTION_CAT_MESHPEERING, 1760 IEEE80211_ACTION_MESHPEERING_CLOSE, 1761 args); 1762 break; 1763 case IEEE80211_NODE_MESH_CONFIRMRCV: 1764 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1765 args[0] = ni->ni_mlpid; 1766 args[1] = ni->ni_mllid; 1767 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1768 ieee80211_send_action(ni, 1769 IEEE80211_ACTION_CAT_MESHPEERING, 1770 IEEE80211_ACTION_MESHPEERING_CLOSE, 1771 args); 1772 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1773 mesh_peer_timeout_setup(ni); 1774 } 1775 break; 1776 default: 1777 IEEE80211_DISCARD(vap, 1778 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1779 wh, NULL, "received confirm in invalid state %d", 1780 ni->ni_mlstate); 1781 vap->iv_stats.is_rx_mgtdiscard++; 1782 break; 1783 } 1784 return 0; 1785 } 1786 1787 static int 1788 mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1789 const struct ieee80211_frame *wh, 1790 const uint8_t *frm, const uint8_t *efrm) 1791 { 1792 uint16_t args[3]; 1793 1794 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1795 ni, "%s", "recv PEER CLOSE"); 1796 1797 switch (ni->ni_mlstate) { 1798 case IEEE80211_NODE_MESH_IDLE: 1799 /* ignore */ 1800 break; 1801 case IEEE80211_NODE_MESH_OPENRCV: 1802 case IEEE80211_NODE_MESH_OPENSNT: 1803 case IEEE80211_NODE_MESH_CONFIRMRCV: 1804 case IEEE80211_NODE_MESH_ESTABLISHED: 1805 args[0] = ni->ni_mlpid; 1806 args[1] = ni->ni_mllid; 1807 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1808 ieee80211_send_action(ni, 1809 IEEE80211_ACTION_CAT_MESHPEERING, 1810 IEEE80211_ACTION_MESHPEERING_CLOSE, 1811 args); 1812 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1813 mesh_peer_timeout_setup(ni); 1814 break; 1815 case IEEE80211_NODE_MESH_HOLDING: 1816 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1817 mesh_peer_timeout_setup(ni); 1818 break; 1819 } 1820 return 0; 1821 } 1822 1823 /* 1824 * Link Metric handling. 1825 */ 1826 static int 1827 mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1828 const struct ieee80211_frame *wh, 1829 const uint8_t *frm, const uint8_t *efrm) 1830 { 1831 uint32_t metric; 1832 1833 metric = mesh_airtime_calc(ni); 1834 ieee80211_send_action(ni, 1835 IEEE80211_ACTION_CAT_MESHLMETRIC, 1836 IEEE80211_ACTION_MESHLMETRIC_REP, 1837 &metric); 1838 return 0; 1839 } 1840 1841 static int 1842 mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1843 const struct ieee80211_frame *wh, 1844 const uint8_t *frm, const uint8_t *efrm) 1845 { 1846 return 0; 1847 } 1848 1849 static int 1850 mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1851 { 1852 struct ieee80211_bpf_params params; 1853 1854 memset(¶ms, 0, sizeof(params)); 1855 params.ibp_pri = WME_AC_VO; 1856 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1857 /* XXX ucast/mcast */ 1858 params.ibp_try0 = ni->ni_txparms->maxretry; 1859 params.ibp_power = ni->ni_txpower; 1860 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1861 ¶ms); 1862 } 1863 1864 #define ADDSHORT(frm, v) do { \ 1865 frm[0] = (v) & 0xff; \ 1866 frm[1] = (v) >> 8; \ 1867 frm += 2; \ 1868 } while (0) 1869 #define ADDWORD(frm, v) do { \ 1870 frm[0] = (v) & 0xff; \ 1871 frm[1] = ((v) >> 8) & 0xff; \ 1872 frm[2] = ((v) >> 16) & 0xff; \ 1873 frm[3] = ((v) >> 24) & 0xff; \ 1874 frm += 4; \ 1875 } while (0) 1876 1877 static int 1878 mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1879 int category, int action, void *args0) 1880 { 1881 struct ieee80211vap *vap = ni->ni_vap; 1882 struct ieee80211com *ic = ni->ni_ic; 1883 uint16_t *args = args0; 1884 const struct ieee80211_rateset *rs; 1885 struct mbuf *m; 1886 uint8_t *frm; 1887 #ifdef IEEE80211_DEBUG 1888 char ethstr[ETHER_ADDRSTRLEN + 1]; 1889 #endif 1890 1891 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1892 "send PEER OPEN action: localid 0x%x", args[0]); 1893 1894 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1895 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1896 ni, kether_ntoa(ni->ni_macaddr, ethstr), ieee80211_node_refcnt(ni)+1); 1897 ieee80211_ref_node(ni); 1898 1899 m = ieee80211_getmgtframe(&frm, 1900 ic->ic_headroom + sizeof(struct ieee80211_frame), 1901 sizeof(uint16_t) /* action+category */ 1902 + sizeof(uint16_t) /* capabilites */ 1903 + 2 + IEEE80211_RATE_SIZE 1904 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1905 + 2 + IEEE80211_MESHID_LEN 1906 + sizeof(struct ieee80211_meshconf_ie) 1907 + sizeof(struct ieee80211_meshpeer_ie) 1908 ); 1909 if (m != NULL) { 1910 /* 1911 * mesh peer open action frame format: 1912 * [1] category 1913 * [1] action 1914 * [2] capabilities 1915 * [tlv] rates 1916 * [tlv] xrates 1917 * [tlv] mesh id 1918 * [tlv] mesh conf 1919 * [tlv] mesh peer link mgmt 1920 */ 1921 *frm++ = category; 1922 *frm++ = action; 1923 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1924 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1925 frm = ieee80211_add_rates(frm, rs); 1926 frm = ieee80211_add_xrates(frm, rs); 1927 frm = ieee80211_add_meshid(frm, vap); 1928 frm = ieee80211_add_meshconf(frm, vap); 1929 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1930 args[0], 0, 0); 1931 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1932 return mesh_send_action(ni, m); 1933 } else { 1934 vap->iv_stats.is_tx_nobuf++; 1935 ieee80211_free_node(ni); 1936 return ENOMEM; 1937 } 1938 } 1939 1940 static int 1941 mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1942 int category, int action, void *args0) 1943 { 1944 struct ieee80211vap *vap = ni->ni_vap; 1945 struct ieee80211com *ic = ni->ni_ic; 1946 uint16_t *args = args0; 1947 const struct ieee80211_rateset *rs; 1948 struct mbuf *m; 1949 uint8_t *frm; 1950 #ifdef IEEE80211_DEBUG 1951 char ethstr[ETHER_ADDRSTRLEN + 1]; 1952 #endif 1953 1954 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1955 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1956 args[0], args[1]); 1957 1958 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1959 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 1960 ni, kether_ntoa(ni->ni_macaddr, ethstr), ieee80211_node_refcnt(ni)+1); 1961 ieee80211_ref_node(ni); 1962 1963 m = ieee80211_getmgtframe(&frm, 1964 ic->ic_headroom + sizeof(struct ieee80211_frame), 1965 sizeof(uint16_t) /* action+category */ 1966 + sizeof(uint16_t) /* capabilites */ 1967 + sizeof(uint16_t) /* status code */ 1968 + sizeof(uint16_t) /* AID */ 1969 + 2 + IEEE80211_RATE_SIZE 1970 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1971 + 2 + IEEE80211_MESHID_LEN 1972 + sizeof(struct ieee80211_meshconf_ie) 1973 + sizeof(struct ieee80211_meshpeer_ie) 1974 ); 1975 if (m != NULL) { 1976 /* 1977 * mesh peer confirm action frame format: 1978 * [1] category 1979 * [1] action 1980 * [2] capabilities 1981 * [2] status code 1982 * [2] association id (peer ID) 1983 * [tlv] rates 1984 * [tlv] xrates 1985 * [tlv] mesh id 1986 * [tlv] mesh conf 1987 * [tlv] mesh peer link mgmt 1988 */ 1989 *frm++ = category; 1990 *frm++ = action; 1991 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1992 ADDSHORT(frm, 0); /* status code */ 1993 ADDSHORT(frm, args[1]); /* AID */ 1994 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1995 frm = ieee80211_add_rates(frm, rs); 1996 frm = ieee80211_add_xrates(frm, rs); 1997 frm = ieee80211_add_meshid(frm, vap); 1998 frm = ieee80211_add_meshconf(frm, vap); 1999 frm = ieee80211_add_meshpeer(frm, 2000 IEEE80211_MESH_PEER_LINK_CONFIRM, 2001 args[0], args[1], 0); 2002 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2003 return mesh_send_action(ni, m); 2004 } else { 2005 vap->iv_stats.is_tx_nobuf++; 2006 ieee80211_free_node(ni); 2007 return ENOMEM; 2008 } 2009 } 2010 2011 static int 2012 mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2013 int category, int action, void *args0) 2014 { 2015 struct ieee80211vap *vap = ni->ni_vap; 2016 struct ieee80211com *ic = ni->ni_ic; 2017 uint16_t *args = args0; 2018 struct mbuf *m; 2019 uint8_t *frm; 2020 #ifdef IEEE80211_DEBUG 2021 char ethstr[ETHER_ADDRSTRLEN + 1]; 2022 #endif 2023 2024 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2025 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2026 args[0], args[1], args[2]); 2027 2028 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2029 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2030 ni, kether_ntoa(ni->ni_macaddr, ethstr), ieee80211_node_refcnt(ni)+1); 2031 ieee80211_ref_node(ni); 2032 2033 m = ieee80211_getmgtframe(&frm, 2034 ic->ic_headroom + sizeof(struct ieee80211_frame), 2035 sizeof(uint16_t) /* action+category */ 2036 + sizeof(uint16_t) /* reason code */ 2037 + 2 + IEEE80211_MESHID_LEN 2038 + sizeof(struct ieee80211_meshpeer_ie) 2039 ); 2040 if (m != NULL) { 2041 /* 2042 * mesh peer close action frame format: 2043 * [1] category 2044 * [1] action 2045 * [2] reason code 2046 * [tlv] mesh id 2047 * [tlv] mesh peer link mgmt 2048 */ 2049 *frm++ = category; 2050 *frm++ = action; 2051 ADDSHORT(frm, args[2]); /* reason code */ 2052 frm = ieee80211_add_meshid(frm, vap); 2053 frm = ieee80211_add_meshpeer(frm, 2054 IEEE80211_MESH_PEER_LINK_CLOSE, 2055 args[0], args[1], args[2]); 2056 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2057 return mesh_send_action(ni, m); 2058 } else { 2059 vap->iv_stats.is_tx_nobuf++; 2060 ieee80211_free_node(ni); 2061 return ENOMEM; 2062 } 2063 } 2064 2065 static int 2066 mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2067 int category, int action, void *arg0) 2068 { 2069 struct ieee80211vap *vap = ni->ni_vap; 2070 struct ieee80211com *ic = ni->ni_ic; 2071 struct mbuf *m; 2072 uint8_t *frm; 2073 #ifdef IEEE80211_DEBUG 2074 char ethstr[ETHER_ADDRSTRLEN + 1]; 2075 #endif 2076 2077 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2078 "%s", "send LINK METRIC REQUEST action"); 2079 2080 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2081 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2082 ni, kether_ntoa(ni->ni_macaddr, ethstr), ieee80211_node_refcnt(ni)+1); 2083 ieee80211_ref_node(ni); 2084 2085 m = ieee80211_getmgtframe(&frm, 2086 ic->ic_headroom + sizeof(struct ieee80211_frame), 2087 sizeof(uint16_t) /* action+category */ 2088 ); 2089 if (m != NULL) { 2090 /* 2091 * mesh link metric request 2092 * [1] category 2093 * [1] action 2094 */ 2095 *frm++ = category; 2096 *frm++ = action; 2097 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2098 return mesh_send_action(ni, m); 2099 } else { 2100 vap->iv_stats.is_tx_nobuf++; 2101 ieee80211_free_node(ni); 2102 return ENOMEM; 2103 } 2104 } 2105 2106 static int 2107 mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2108 int category, int action, void *args0) 2109 { 2110 struct ieee80211vap *vap = ni->ni_vap; 2111 struct ieee80211com *ic = ni->ni_ic; 2112 uint32_t *metric = args0; 2113 struct mbuf *m; 2114 uint8_t *frm; 2115 #ifdef IEEE80211_DEBUG 2116 char ethstr[ETHER_ADDRSTRLEN + 1]; 2117 #endif 2118 2119 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2120 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2121 2122 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2123 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2124 ni, kether_ntoa(ni->ni_macaddr, ethstr), ieee80211_node_refcnt(ni)+1); 2125 ieee80211_ref_node(ni); 2126 2127 m = ieee80211_getmgtframe(&frm, 2128 ic->ic_headroom + sizeof(struct ieee80211_frame), 2129 sizeof(uint16_t) /* action+category */ 2130 + sizeof(struct ieee80211_meshlmetric_ie) 2131 ); 2132 if (m != NULL) { 2133 /* 2134 * mesh link metric reply 2135 * [1] category 2136 * [1] action 2137 * [tlv] mesh link metric 2138 */ 2139 *frm++ = category; 2140 *frm++ = action; 2141 frm = ieee80211_add_meshlmetric(frm, *metric); 2142 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2143 return mesh_send_action(ni, m); 2144 } else { 2145 vap->iv_stats.is_tx_nobuf++; 2146 ieee80211_free_node(ni); 2147 return ENOMEM; 2148 } 2149 } 2150 2151 static void 2152 mesh_peer_timeout_setup(struct ieee80211_node *ni) 2153 { 2154 switch (ni->ni_mlstate) { 2155 case IEEE80211_NODE_MESH_HOLDING: 2156 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2157 break; 2158 case IEEE80211_NODE_MESH_CONFIRMRCV: 2159 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2160 break; 2161 case IEEE80211_NODE_MESH_IDLE: 2162 ni->ni_mltval = 0; 2163 break; 2164 default: 2165 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2166 break; 2167 } 2168 if (ni->ni_mltval) { 2169 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2170 mesh_peer_timeout_callout, ni); 2171 } 2172 } 2173 2174 /* 2175 * Same as above but backoffs timer statisically 50%. 2176 */ 2177 static void 2178 mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2179 { 2180 uint32_t r; 2181 2182 r = karc4random(); 2183 ni->ni_mltval += r % ni->ni_mltval; 2184 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2185 mesh_peer_timeout_callout, ni); 2186 } 2187 2188 static __inline void 2189 mesh_peer_timeout_stop(struct ieee80211_node *ni) 2190 { 2191 callout_stop(&ni->ni_mltimer); 2192 } 2193 2194 /* 2195 * Mesh Peer Link Management FSM timeout handling. 2196 */ 2197 static void 2198 mesh_peer_timeout_callout(void *arg) 2199 { 2200 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2201 uint16_t args[3]; 2202 2203 wlan_serialize_enter(); 2204 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2205 ni, "mesh link timeout, state %d, retry counter %d", 2206 ni->ni_mlstate, ni->ni_mlrcnt); 2207 2208 switch (ni->ni_mlstate) { 2209 case IEEE80211_NODE_MESH_IDLE: 2210 case IEEE80211_NODE_MESH_ESTABLISHED: 2211 break; 2212 case IEEE80211_NODE_MESH_OPENSNT: 2213 case IEEE80211_NODE_MESH_OPENRCV: 2214 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2215 args[0] = ni->ni_mlpid; 2216 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 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 args[0] = ni->ni_mlpid; 2225 ieee80211_send_action(ni, 2226 IEEE80211_ACTION_CAT_MESHPEERING, 2227 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2228 ni->ni_mlrcnt++; 2229 mesh_peer_timeout_backoff(ni); 2230 } 2231 break; 2232 case IEEE80211_NODE_MESH_CONFIRMRCV: 2233 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2234 args[0] = ni->ni_mlpid; 2235 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2236 ieee80211_send_action(ni, 2237 IEEE80211_ACTION_CAT_MESHPEERING, 2238 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2239 ni->ni_mlrcnt = 0; 2240 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2241 mesh_peer_timeout_setup(ni); 2242 } else { 2243 ni->ni_mlrcnt++; 2244 mesh_peer_timeout_setup(ni); 2245 } 2246 break; 2247 case IEEE80211_NODE_MESH_HOLDING: 2248 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2249 break; 2250 } 2251 wlan_serialize_exit(); 2252 } 2253 2254 static int 2255 mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2256 { 2257 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2258 2259 if (ie == NULL || ie[1] != ms->ms_idlen) 2260 return 1; 2261 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2262 } 2263 2264 /* 2265 * Check if we are using the same algorithms for this mesh. 2266 */ 2267 static int 2268 mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2269 { 2270 const struct ieee80211_meshconf_ie *meshconf = 2271 (const struct ieee80211_meshconf_ie *) ie; 2272 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2273 uint16_t cap; 2274 2275 if (meshconf == NULL) 2276 return 1; 2277 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2278 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2279 "unknown path selection algorithm: 0x%x\n", 2280 meshconf->conf_pselid); 2281 return 1; 2282 } 2283 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2284 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2285 "unknown path metric algorithm: 0x%x\n", 2286 meshconf->conf_pmetid); 2287 return 1; 2288 } 2289 if (meshconf->conf_ccid != 0) { 2290 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2291 "unknown congestion control algorithm: 0x%x\n", 2292 meshconf->conf_ccid); 2293 return 1; 2294 } 2295 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2296 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2297 "unknown sync algorithm: 0x%x\n", 2298 meshconf->conf_syncid); 2299 return 1; 2300 } 2301 if (meshconf->conf_authid != 0) { 2302 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2303 "unknown auth algorithm: 0x%x\n", 2304 meshconf->conf_pselid); 2305 return 1; 2306 } 2307 /* NB: conf_cap is only read correctly here */ 2308 cap = LE_READ_2(&meshconf->conf_cap); 2309 /* Not accepting peers */ 2310 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) { 2311 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2312 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2313 return 1; 2314 } 2315 return 0; 2316 } 2317 2318 static int 2319 mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2320 const uint8_t *ie) 2321 { 2322 const struct ieee80211_meshpeer_ie *meshpeer = 2323 (const struct ieee80211_meshpeer_ie *) ie; 2324 2325 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2326 meshpeer->peer_len > 10) 2327 return 1; 2328 switch (subtype) { 2329 case IEEE80211_MESH_PEER_LINK_OPEN: 2330 if (meshpeer->peer_len != 6) 2331 return 1; 2332 break; 2333 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2334 if (meshpeer->peer_len != 8) 2335 return 1; 2336 break; 2337 case IEEE80211_MESH_PEER_LINK_CLOSE: 2338 if (meshpeer->peer_len < 8) 2339 return 1; 2340 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2341 return 1; 2342 if (meshpeer->peer_rcode == 0) 2343 return 1; 2344 break; 2345 } 2346 return 0; 2347 } 2348 2349 /* 2350 * Add a Mesh ID IE to a frame. 2351 */ 2352 uint8_t * 2353 ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2354 { 2355 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2356 2357 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2358 2359 *frm++ = IEEE80211_ELEMID_MESHID; 2360 *frm++ = ms->ms_idlen; 2361 memcpy(frm, ms->ms_id, ms->ms_idlen); 2362 return frm + ms->ms_idlen; 2363 } 2364 2365 /* 2366 * Add a Mesh Configuration IE to a frame. 2367 * For now just use HWMP routing, Airtime link metric, Null Congestion 2368 * Signaling, Null Sync Protocol and Null Authentication. 2369 */ 2370 uint8_t * 2371 ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2372 { 2373 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2374 uint16_t caps; 2375 2376 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2377 2378 *frm++ = IEEE80211_ELEMID_MESHCONF; 2379 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2380 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2381 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2382 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2383 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2384 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2385 /* NB: set the number of neighbors before the rest */ 2386 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2387 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2388 *frm |= IEEE80211_MESHCONF_FORM_MP; 2389 frm += 1; 2390 caps = 0; 2391 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2392 caps |= IEEE80211_MESHCONF_CAP_AP; 2393 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2394 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2395 ADDSHORT(frm, caps); 2396 return frm; 2397 } 2398 2399 /* 2400 * Add a Mesh Peer Management IE to a frame. 2401 */ 2402 uint8_t * 2403 ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2404 uint16_t peerid, uint16_t reason) 2405 { 2406 /* XXX change for AH */ 2407 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2408 2409 KASSERT(localid != 0, ("localid == 0")); 2410 2411 *frm++ = IEEE80211_ELEMID_MESHPEER; 2412 switch (subtype) { 2413 case IEEE80211_MESH_PEER_LINK_OPEN: 2414 *frm++ = 6; /* length */ 2415 memcpy(frm, meshpeerproto, 4); 2416 frm += 4; 2417 ADDSHORT(frm, localid); /* local ID */ 2418 break; 2419 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2420 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2421 *frm++ = 8; /* length */ 2422 memcpy(frm, meshpeerproto, 4); 2423 frm += 4; 2424 ADDSHORT(frm, localid); /* local ID */ 2425 ADDSHORT(frm, peerid); /* peer ID */ 2426 break; 2427 case IEEE80211_MESH_PEER_LINK_CLOSE: 2428 if (peerid) 2429 *frm++ = 10; /* length */ 2430 else 2431 *frm++ = 8; /* length */ 2432 memcpy(frm, meshpeerproto, 4); 2433 frm += 4; 2434 ADDSHORT(frm, localid); /* local ID */ 2435 if (peerid) 2436 ADDSHORT(frm, peerid); /* peer ID */ 2437 ADDSHORT(frm, reason); 2438 break; 2439 } 2440 return frm; 2441 } 2442 2443 /* 2444 * Compute an Airtime Link Metric for the link with this node. 2445 * 2446 * Based on Draft 3.0 spec (11B.10, p.149). 2447 */ 2448 /* 2449 * Max 802.11s overhead. 2450 */ 2451 #define IEEE80211_MESH_MAXOVERHEAD \ 2452 (sizeof(struct ieee80211_qosframe_addr4) \ 2453 + sizeof(struct ieee80211_meshcntl_ae11) \ 2454 + sizeof(struct llc) \ 2455 + IEEE80211_ADDR_LEN \ 2456 + IEEE80211_WEP_IVLEN \ 2457 + IEEE80211_WEP_KIDLEN \ 2458 + IEEE80211_WEP_CRCLEN \ 2459 + IEEE80211_WEP_MICLEN \ 2460 + IEEE80211_CRC_LEN) 2461 uint32_t 2462 mesh_airtime_calc(struct ieee80211_node *ni) 2463 { 2464 #define M_BITS 8 2465 #define S_FACTOR (2 * M_BITS) 2466 struct ieee80211com *ic = ni->ni_ic; 2467 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2468 static const int nbits = 8192 << M_BITS; 2469 uint32_t overhead, rate, errrate; 2470 uint64_t res; 2471 u_long oerr, ierr; 2472 2473 /* Time to transmit a frame */ 2474 rate = ni->ni_txrate; 2475 overhead = ieee80211_compute_duration(ic->ic_rt, 2476 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2477 /* Error rate in percentage */ 2478 /* XXX assuming small failures are ok */ 2479 IFNET_STAT_GET(ifp, oerrors, oerr); 2480 IFNET_STAT_GET(ifp, ierrors, ierr); 2481 errrate = (((oerr + ierr) / 100) << M_BITS) / 100; 2482 res = (overhead + (nbits / rate)) * 2483 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2484 2485 return (uint32_t)(res >> S_FACTOR); 2486 #undef M_BITS 2487 #undef S_FACTOR 2488 } 2489 2490 /* 2491 * Add a Mesh Link Metric report IE to a frame. 2492 */ 2493 uint8_t * 2494 ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2495 { 2496 *frm++ = IEEE80211_ELEMID_MESHLINK; 2497 *frm++ = 4; 2498 ADDWORD(frm, metric); 2499 return frm; 2500 } 2501 #undef ADDSHORT 2502 #undef ADDWORD 2503 2504 /* 2505 * Initialize any mesh-specific node state. 2506 */ 2507 void 2508 ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2509 { 2510 ni->ni_flags |= IEEE80211_NODE_QOS; 2511 callout_init_mp(&ni->ni_mltimer); 2512 } 2513 2514 /* 2515 * Cleanup any mesh-specific node state. 2516 */ 2517 void 2518 ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2519 { 2520 struct ieee80211vap *vap = ni->ni_vap; 2521 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2522 2523 callout_stop(&ni->ni_mltimer); 2524 /* NB: short-circuit callbacks after mesh_vdetach */ 2525 if (vap->iv_mesh != NULL) 2526 ms->ms_ppath->mpp_peerdown(ni); 2527 } 2528 2529 void 2530 ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2531 { 2532 ni->ni_meshidlen = ie[1]; 2533 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2534 } 2535 2536 /* 2537 * Setup mesh-specific node state on neighbor discovery. 2538 */ 2539 void 2540 ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2541 const struct ieee80211_frame *wh, 2542 const struct ieee80211_scanparams *sp) 2543 { 2544 ieee80211_parse_meshid(ni, sp->meshid); 2545 } 2546 2547 void 2548 ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2549 struct ieee80211_beacon_offsets *bo) 2550 { 2551 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2552 2553 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2554 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2555 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2556 } 2557 } 2558 2559 static int 2560 mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2561 { 2562 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2563 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2564 struct ieee80211_mesh_route *rt; 2565 struct ieee80211req_mesh_route *imr; 2566 size_t len, off; 2567 uint8_t *p; 2568 int error; 2569 2570 if (vap->iv_opmode != IEEE80211_M_MBSS) 2571 return ENOSYS; 2572 2573 error = 0; 2574 switch (ireq->i_type) { 2575 case IEEE80211_IOC_MESH_ID: 2576 ireq->i_len = ms->ms_idlen; 2577 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2578 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2579 break; 2580 case IEEE80211_IOC_MESH_AP: 2581 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2582 break; 2583 case IEEE80211_IOC_MESH_FWRD: 2584 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2585 break; 2586 case IEEE80211_IOC_MESH_TTL: 2587 ireq->i_val = ms->ms_ttl; 2588 break; 2589 case IEEE80211_IOC_MESH_RTCMD: 2590 switch (ireq->i_val) { 2591 case IEEE80211_MESH_RTCMD_LIST: 2592 len = 0; 2593 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2594 len += sizeof(*imr); 2595 } 2596 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2597 ireq->i_len = len; 2598 return ENOMEM; 2599 } 2600 ireq->i_len = len; 2601 /* XXX M_WAIT? */ 2602 p = kmalloc(len, M_TEMP, M_INTWAIT | M_ZERO); 2603 off = 0; 2604 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2605 if (off >= len) 2606 break; 2607 imr = (struct ieee80211req_mesh_route *) 2608 (p + off); 2609 imr->imr_flags = rt->rt_flags; 2610 IEEE80211_ADDR_COPY(imr->imr_dest, 2611 rt->rt_dest); 2612 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2613 rt->rt_nexthop); 2614 imr->imr_metric = rt->rt_metric; 2615 imr->imr_nhops = rt->rt_nhops; 2616 imr->imr_lifetime = rt->rt_lifetime; 2617 imr->imr_lastmseq = rt->rt_lastmseq; 2618 off += sizeof(*imr); 2619 } 2620 error = copyout(p, (uint8_t *)ireq->i_data, 2621 ireq->i_len); 2622 kfree(p, M_TEMP); 2623 break; 2624 case IEEE80211_MESH_RTCMD_FLUSH: 2625 case IEEE80211_MESH_RTCMD_ADD: 2626 case IEEE80211_MESH_RTCMD_DELETE: 2627 return EINVAL; 2628 default: 2629 return ENOSYS; 2630 } 2631 break; 2632 case IEEE80211_IOC_MESH_PR_METRIC: 2633 len = strlen(ms->ms_pmetric->mpm_descr); 2634 if (ireq->i_len < len) 2635 return EINVAL; 2636 ireq->i_len = len; 2637 error = copyout(ms->ms_pmetric->mpm_descr, 2638 (uint8_t *)ireq->i_data, len); 2639 break; 2640 case IEEE80211_IOC_MESH_PR_PATH: 2641 len = strlen(ms->ms_ppath->mpp_descr); 2642 if (ireq->i_len < len) 2643 return EINVAL; 2644 ireq->i_len = len; 2645 error = copyout(ms->ms_ppath->mpp_descr, 2646 (uint8_t *)ireq->i_data, len); 2647 break; 2648 default: 2649 return ENOSYS; 2650 } 2651 2652 return error; 2653 } 2654 IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2655 2656 static int 2657 mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2658 { 2659 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2660 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2661 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2662 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2663 int error; 2664 2665 if (vap->iv_opmode != IEEE80211_M_MBSS) 2666 return ENOSYS; 2667 2668 error = 0; 2669 switch (ireq->i_type) { 2670 case IEEE80211_IOC_MESH_ID: 2671 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2672 return EINVAL; 2673 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2674 if (error != 0) 2675 break; 2676 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2677 ms->ms_idlen = ireq->i_len; 2678 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2679 error = ENETRESET; 2680 break; 2681 case IEEE80211_IOC_MESH_AP: 2682 if (ireq->i_val) 2683 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2684 else 2685 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2686 error = ENETRESET; 2687 break; 2688 case IEEE80211_IOC_MESH_FWRD: 2689 if (ireq->i_val) 2690 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2691 else 2692 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2693 break; 2694 case IEEE80211_IOC_MESH_TTL: 2695 ms->ms_ttl = (uint8_t) ireq->i_val; 2696 break; 2697 case IEEE80211_IOC_MESH_RTCMD: 2698 switch (ireq->i_val) { 2699 case IEEE80211_MESH_RTCMD_LIST: 2700 return EINVAL; 2701 case IEEE80211_MESH_RTCMD_FLUSH: 2702 ieee80211_mesh_rt_flush(vap); 2703 break; 2704 case IEEE80211_MESH_RTCMD_ADD: 2705 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2706 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2707 return EINVAL; 2708 error = copyin(ireq->i_data, &tmpaddr, 2709 IEEE80211_ADDR_LEN); 2710 if (error == 0) 2711 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2712 break; 2713 case IEEE80211_MESH_RTCMD_DELETE: 2714 ieee80211_mesh_rt_del(vap, ireq->i_data); 2715 break; 2716 default: 2717 return ENOSYS; 2718 } 2719 break; 2720 case IEEE80211_IOC_MESH_PR_METRIC: 2721 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2722 if (error == 0) { 2723 error = mesh_select_proto_metric(vap, tmpproto); 2724 if (error == 0) 2725 error = ENETRESET; 2726 } 2727 break; 2728 case IEEE80211_IOC_MESH_PR_PATH: 2729 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2730 if (error == 0) { 2731 error = mesh_select_proto_path(vap, tmpproto); 2732 if (error == 0) 2733 error = ENETRESET; 2734 } 2735 break; 2736 default: 2737 return ENOSYS; 2738 } 2739 return error; 2740 } 2741 IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2742