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 * $DragonFly$ 31 */ 32 33 /* 34 * IEEE 802.11s Mesh Point (MBSS) support. 35 * 36 * Based on March 2009, D3.0 802.11s draft spec. 37 */ 38 #include "opt_inet.h" 39 #include "opt_wlan.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/mbuf.h> 44 #include <sys/malloc.h> 45 #include <sys/kernel.h> 46 47 #include <sys/socket.h> 48 #include <sys/sockio.h> 49 #include <sys/endian.h> 50 #include <sys/errno.h> 51 #include <sys/proc.h> 52 #include <sys/sysctl.h> 53 54 #include <net/if.h> 55 #include <net/if_media.h> 56 #include <net/if_llc.h> 57 #include <net/ethernet.h> 58 #include <net/route.h> 59 60 #include <netproto/802_11/ieee80211_var.h> 61 #include <netproto/802_11/ieee80211_action.h> 62 #include <netproto/802_11/ieee80211_input.h> 63 #include <netproto/802_11/ieee80211_mesh.h> 64 65 static void mesh_rt_flush_invalid(struct ieee80211vap *); 66 static int mesh_select_proto_path(struct ieee80211vap *, const char *); 67 static int mesh_select_proto_metric(struct ieee80211vap *, const char *); 68 static void mesh_vattach(struct ieee80211vap *); 69 static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); 70 static void mesh_rt_cleanup_callout(void *); 71 static void mesh_linkchange(struct ieee80211_node *, 72 enum ieee80211_mesh_mlstate); 73 static void mesh_checkid(void *, struct ieee80211_node *); 74 static uint32_t mesh_generateid(struct ieee80211vap *); 75 static int mesh_checkpseq(struct ieee80211vap *, 76 const uint8_t [IEEE80211_ADDR_LEN], uint32_t); 77 static struct ieee80211_node * 78 mesh_find_txnode(struct ieee80211vap *, 79 const uint8_t [IEEE80211_ADDR_LEN]); 80 static void mesh_forward(struct ieee80211vap *, struct mbuf *, 81 const struct ieee80211_meshcntl *); 82 static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int); 83 static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 84 int, int); 85 static void mesh_peer_timeout_setup(struct ieee80211_node *); 86 static void mesh_peer_timeout_backoff(struct ieee80211_node *); 87 static void mesh_peer_timeout_callout(void *); 88 static __inline void 89 mesh_peer_timeout_stop(struct ieee80211_node *); 90 static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 91 static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 92 static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 93 const uint8_t *); 94 uint32_t mesh_airtime_calc(struct ieee80211_node *); 95 96 /* 97 * Timeout values come from the specification and are in milliseconds. 98 */ 99 SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 100 "IEEE 802.11s parameters"); 101 static int ieee80211_mesh_retrytimeout = -1; 102 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 103 &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 104 "Retry timeout (msec)"); 105 static int ieee80211_mesh_holdingtimeout = -1; 106 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 107 &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 108 "Holding state timeout (msec)"); 109 static int ieee80211_mesh_confirmtimeout = -1; 110 SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 111 &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 112 "Confirm state timeout (msec)"); 113 static int ieee80211_mesh_maxretries = 2; 114 SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 115 &ieee80211_mesh_maxretries, 0, 116 "Maximum retries during peer link establishment"); 117 118 static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 119 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 120 121 static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 122 static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 123 static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 124 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req; 125 static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep; 126 127 static ieee80211_send_action_func mesh_send_action_meshpeering_open; 128 static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 129 static ieee80211_send_action_func mesh_send_action_meshpeering_close; 130 static ieee80211_send_action_func mesh_send_action_meshlink_request; 131 static ieee80211_send_action_func mesh_send_action_meshlink_reply; 132 133 static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 134 .mpm_descr = "AIRTIME", 135 .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 136 .mpm_metric = mesh_airtime_calc, 137 }; 138 139 static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 140 static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 141 142 MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); 143 144 /* 145 * Helper functions to manipulate the Mesh routing table. 146 */ 147 148 static struct ieee80211_mesh_route * 149 mesh_rt_find_locked(struct ieee80211_mesh_state *ms, 150 const uint8_t dest[IEEE80211_ADDR_LEN]) 151 { 152 struct ieee80211_mesh_route *rt; 153 154 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 155 if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 156 return rt; 157 } 158 return NULL; 159 } 160 161 static struct ieee80211_mesh_route * 162 mesh_rt_add_locked(struct ieee80211_mesh_state *ms, 163 const uint8_t dest[IEEE80211_ADDR_LEN]) 164 { 165 struct ieee80211_mesh_route *rt; 166 167 KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 168 ("%s: adding broadcast to the routing table", __func__)); 169 170 rt = kmalloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 171 ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_INTWAIT | M_ZERO); 172 if (rt != NULL) { 173 IEEE80211_ADDR_COPY(rt->rt_dest, dest); 174 rt->rt_priv = (void *)ALIGN(&rt[1]); 175 rt->rt_crtime = ticks; 176 TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 177 } 178 return rt; 179 } 180 181 struct ieee80211_mesh_route * 182 ieee80211_mesh_rt_find(struct ieee80211vap *vap, 183 const uint8_t dest[IEEE80211_ADDR_LEN]) 184 { 185 struct ieee80211_mesh_state *ms = vap->iv_mesh; 186 struct ieee80211_mesh_route *rt; 187 188 rt = mesh_rt_find_locked(ms, dest); 189 return rt; 190 } 191 192 struct ieee80211_mesh_route * 193 ieee80211_mesh_rt_add(struct ieee80211vap *vap, 194 const uint8_t dest[IEEE80211_ADDR_LEN]) 195 { 196 struct ieee80211_mesh_state *ms = vap->iv_mesh; 197 struct ieee80211_mesh_route *rt; 198 199 KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 200 ("%s: duplicate entry in the routing table", __func__)); 201 KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 202 ("%s: adding self to the routing table", __func__)); 203 204 rt = mesh_rt_add_locked(ms, dest); 205 return rt; 206 } 207 208 /* 209 * Add a proxy route (as needed) for the specified destination. 210 */ 211 void 212 ieee80211_mesh_proxy_check(struct ieee80211vap *vap, 213 const uint8_t dest[IEEE80211_ADDR_LEN]) 214 { 215 struct ieee80211_mesh_state *ms = vap->iv_mesh; 216 struct ieee80211_mesh_route *rt; 217 218 rt = mesh_rt_find_locked(ms, dest); 219 if (rt == NULL) { 220 rt = mesh_rt_add_locked(ms, dest); 221 if (rt == NULL) { 222 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 223 "%s", "unable to add proxy entry"); 224 vap->iv_stats.is_mesh_rtaddfailed++; 225 } else { 226 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 227 "%s", "add proxy entry"); 228 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 229 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 230 | IEEE80211_MESHRT_FLAGS_PROXY; 231 } 232 /* XXX assert PROXY? */ 233 } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 234 struct ieee80211com *ic = vap->iv_ic; 235 /* 236 * Fix existing entry created by received frames from 237 * stations that have some memory of dest. We also 238 * flush any frames held on the staging queue; delivering 239 * them is too much trouble right now. 240 */ 241 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 242 "%s", "fix proxy entry"); 243 IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 244 rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 245 | IEEE80211_MESHRT_FLAGS_PROXY; 246 /* XXX belongs in hwmp */ 247 ieee80211_ageq_drain_node(&ic->ic_stageq, 248 (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 249 /* XXX stat? */ 250 } 251 } 252 253 static __inline void 254 mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 255 { 256 TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 257 kfree(rt, M_80211_MESH_RT); 258 } 259 260 void 261 ieee80211_mesh_rt_del(struct ieee80211vap *vap, 262 const uint8_t dest[IEEE80211_ADDR_LEN]) 263 { 264 struct ieee80211_mesh_state *ms = vap->iv_mesh; 265 struct ieee80211_mesh_route *rt, *next; 266 267 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) { 268 if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 269 mesh_rt_del(ms, rt); 270 return; 271 } 272 } 273 } 274 275 void 276 ieee80211_mesh_rt_flush(struct ieee80211vap *vap) 277 { 278 struct ieee80211_mesh_state *ms = vap->iv_mesh; 279 struct ieee80211_mesh_route *rt, *next; 280 281 if (ms == NULL) 282 return; 283 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) 284 mesh_rt_del(ms, rt); 285 } 286 287 void 288 ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 289 const uint8_t peer[IEEE80211_ADDR_LEN]) 290 { 291 struct ieee80211_mesh_state *ms = vap->iv_mesh; 292 struct ieee80211_mesh_route *rt, *next; 293 294 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) { 295 if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 296 mesh_rt_del(ms, rt); 297 } 298 } 299 300 /* 301 * Flush expired routing entries, i.e. those in invalid state for 302 * some time. 303 */ 304 static void 305 mesh_rt_flush_invalid(struct ieee80211vap *vap) 306 { 307 struct ieee80211_mesh_state *ms = vap->iv_mesh; 308 struct ieee80211_mesh_route *rt, *next; 309 310 if (ms == NULL) 311 return; 312 TAILQ_FOREACH_MUTABLE(rt, &ms->ms_routes, rt_next, next) { 313 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 && 314 ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact) 315 mesh_rt_del(ms, rt); 316 } 317 } 318 319 int 320 ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 321 { 322 int i, firstempty = -1; 323 324 for (i = 0; i < NELEM(mesh_proto_paths); i++) { 325 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 326 IEEE80211_MESH_PROTO_DSZ) == 0) 327 return EEXIST; 328 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 329 firstempty = i; 330 } 331 if (firstempty < 0) 332 return ENOSPC; 333 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 334 mesh_proto_paths[firstempty].mpp_active = 1; 335 return 0; 336 } 337 338 int 339 ieee80211_mesh_register_proto_metric(const struct 340 ieee80211_mesh_proto_metric *mpm) 341 { 342 int i, firstempty = -1; 343 344 for (i = 0; i < NELEM(mesh_proto_metrics); i++) { 345 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 346 IEEE80211_MESH_PROTO_DSZ) == 0) 347 return EEXIST; 348 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 349 firstempty = i; 350 } 351 if (firstempty < 0) 352 return ENOSPC; 353 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 354 mesh_proto_metrics[firstempty].mpm_active = 1; 355 return 0; 356 } 357 358 static int 359 mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 360 { 361 struct ieee80211_mesh_state *ms = vap->iv_mesh; 362 int i; 363 364 for (i = 0; i < NELEM(mesh_proto_paths); i++) { 365 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 366 ms->ms_ppath = &mesh_proto_paths[i]; 367 return 0; 368 } 369 } 370 return ENOENT; 371 } 372 373 static int 374 mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 375 { 376 struct ieee80211_mesh_state *ms = vap->iv_mesh; 377 int i; 378 379 for (i = 0; i < NELEM(mesh_proto_metrics); i++) { 380 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 381 ms->ms_pmetric = &mesh_proto_metrics[i]; 382 return 0; 383 } 384 } 385 return ENOENT; 386 } 387 388 static void 389 ieee80211_mesh_init(void) 390 { 391 392 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 393 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 394 395 /* 396 * Setup mesh parameters that depends on the clock frequency. 397 */ 398 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 399 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 400 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 401 402 /* 403 * Register action frame handlers. 404 */ 405 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 406 IEEE80211_ACTION_MESHPEERING_OPEN, 407 mesh_recv_action_meshpeering_open); 408 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 409 IEEE80211_ACTION_MESHPEERING_CONFIRM, 410 mesh_recv_action_meshpeering_confirm); 411 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 412 IEEE80211_ACTION_MESHPEERING_CLOSE, 413 mesh_recv_action_meshpeering_close); 414 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 415 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 416 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 417 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 418 419 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 420 IEEE80211_ACTION_MESHPEERING_OPEN, 421 mesh_send_action_meshpeering_open); 422 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 423 IEEE80211_ACTION_MESHPEERING_CONFIRM, 424 mesh_send_action_meshpeering_confirm); 425 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 426 IEEE80211_ACTION_MESHPEERING_CLOSE, 427 mesh_send_action_meshpeering_close); 428 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 429 IEEE80211_ACTION_MESHLMETRIC_REQ, 430 mesh_send_action_meshlink_request); 431 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 432 IEEE80211_ACTION_MESHLMETRIC_REP, 433 mesh_send_action_meshlink_reply); 434 435 /* 436 * Register Airtime Link Metric. 437 */ 438 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 439 440 } 441 SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 442 443 void 444 ieee80211_mesh_attach(struct ieee80211com *ic) 445 { 446 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 447 } 448 449 void 450 ieee80211_mesh_detach(struct ieee80211com *ic) 451 { 452 } 453 454 static void 455 mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 456 { 457 struct ieee80211com *ic = ni->ni_ic; 458 uint16_t args[3]; 459 460 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 461 args[0] = ni->ni_mlpid; 462 args[1] = ni->ni_mllid; 463 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 464 ieee80211_send_action(ni, 465 IEEE80211_ACTION_CAT_MESHPEERING, 466 IEEE80211_ACTION_MESHPEERING_CLOSE, 467 args); 468 } 469 callout_stop(&ni->ni_mltimer); 470 /* XXX belongs in hwmp */ 471 ieee80211_ageq_drain_node(&ic->ic_stageq, 472 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 473 } 474 475 static void 476 mesh_vdetach(struct ieee80211vap *vap) 477 { 478 struct ieee80211_mesh_state *ms = vap->iv_mesh; 479 480 callout_stop(&ms->ms_cleantimer); 481 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 482 NULL); 483 ieee80211_mesh_rt_flush(vap); 484 ms->ms_ppath->mpp_vdetach(vap); 485 kfree(vap->iv_mesh, M_80211_VAP); 486 vap->iv_mesh = NULL; 487 } 488 489 static void 490 mesh_vattach(struct ieee80211vap *vap) 491 { 492 struct ieee80211_mesh_state *ms; 493 vap->iv_newstate = mesh_newstate; 494 vap->iv_input = mesh_input; 495 vap->iv_opdetach = mesh_vdetach; 496 vap->iv_recv_mgmt = mesh_recv_mgmt; 497 ms = kmalloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 498 M_INTWAIT | M_ZERO); 499 if (ms == NULL) { 500 kprintf("%s: couldn't alloc MBSS state\n", __func__); 501 return; 502 } 503 vap->iv_mesh = ms; 504 ms->ms_seq = 0; 505 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 506 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 507 TAILQ_INIT(&ms->ms_routes); 508 callout_init_mp(&ms->ms_cleantimer); 509 mesh_select_proto_metric(vap, "AIRTIME"); 510 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 511 mesh_select_proto_path(vap, "HWMP"); 512 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 513 ms->ms_ppath->mpp_vattach(vap); 514 } 515 516 /* 517 * IEEE80211_M_MBSS vap state machine handler. 518 */ 519 static int 520 mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 521 { 522 struct ieee80211_mesh_state *ms = vap->iv_mesh; 523 struct ieee80211com *ic = vap->iv_ic; 524 struct ieee80211_node *ni; 525 enum ieee80211_state ostate; 526 527 ostate = vap->iv_state; 528 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 529 __func__, ieee80211_state_name[ostate], 530 ieee80211_state_name[nstate], arg); 531 vap->iv_state = nstate; /* state transition */ 532 if (ostate != IEEE80211_S_SCAN) 533 ieee80211_cancel_scan(vap); /* background scan */ 534 ni = vap->iv_bss; /* NB: no reference held */ 535 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 536 callout_stop(&ms->ms_cleantimer); 537 switch (nstate) { 538 case IEEE80211_S_INIT: 539 switch (ostate) { 540 case IEEE80211_S_SCAN: 541 ieee80211_cancel_scan(vap); 542 break; 543 case IEEE80211_S_CAC: 544 ieee80211_dfs_cac_stop(vap); 545 break; 546 case IEEE80211_S_RUN: 547 ieee80211_iterate_nodes(&ic->ic_sta, 548 mesh_vdetach_peers, NULL); 549 break; 550 default: 551 break; 552 } 553 if (ostate != IEEE80211_S_INIT) { 554 /* NB: optimize INIT -> INIT case */ 555 ieee80211_reset_bss(vap); 556 ieee80211_mesh_rt_flush(vap); 557 } 558 break; 559 case IEEE80211_S_SCAN: 560 switch (ostate) { 561 case IEEE80211_S_INIT: 562 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 563 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 564 ms->ms_idlen != 0) { 565 /* 566 * Already have a channel and a mesh ID; bypass 567 * the scan and startup immediately. 568 */ 569 ieee80211_create_ibss(vap, vap->iv_des_chan); 570 break; 571 } 572 /* 573 * Initiate a scan. We can come here as a result 574 * of an IEEE80211_IOC_SCAN_REQ too in which case 575 * the vap will be marked with IEEE80211_FEXT_SCANREQ 576 * and the scan request parameters will be present 577 * in iv_scanreq. Otherwise we do the default. 578 */ 579 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 580 ieee80211_check_scan(vap, 581 vap->iv_scanreq_flags, 582 vap->iv_scanreq_duration, 583 vap->iv_scanreq_mindwell, 584 vap->iv_scanreq_maxdwell, 585 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 586 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 587 } else 588 ieee80211_check_scan_current(vap); 589 break; 590 default: 591 break; 592 } 593 break; 594 case IEEE80211_S_CAC: 595 /* 596 * Start CAC on a DFS channel. We come here when starting 597 * a bss on a DFS channel (see ieee80211_create_ibss). 598 */ 599 ieee80211_dfs_cac_start(vap); 600 break; 601 case IEEE80211_S_RUN: 602 switch (ostate) { 603 case IEEE80211_S_INIT: 604 /* 605 * Already have a channel; bypass the 606 * scan and startup immediately. 607 * Note that ieee80211_create_ibss will call 608 * back to do a RUN->RUN state change. 609 */ 610 ieee80211_create_ibss(vap, 611 ieee80211_ht_adjust_channel(ic, 612 ic->ic_curchan, vap->iv_flags_ht)); 613 /* NB: iv_bss is changed on return */ 614 break; 615 case IEEE80211_S_CAC: 616 /* 617 * NB: This is the normal state change when CAC 618 * expires and no radar was detected; no need to 619 * clear the CAC timer as it's already expired. 620 */ 621 /* fall thru... */ 622 case IEEE80211_S_CSA: 623 #if 0 624 /* 625 * Shorten inactivity timer of associated stations 626 * to weed out sta's that don't follow a CSA. 627 */ 628 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 629 #endif 630 /* 631 * Update bss node channel to reflect where 632 * we landed after CSA. 633 */ 634 ieee80211_node_set_chan(vap->iv_bss, 635 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 636 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 637 /* XXX bypass debug msgs */ 638 break; 639 case IEEE80211_S_SCAN: 640 case IEEE80211_S_RUN: 641 #ifdef IEEE80211_DEBUG 642 if (ieee80211_msg_debug(vap)) { 643 struct ieee80211_node *ni = vap->iv_bss; 644 ieee80211_note(vap, 645 "synchronized with %6D meshid ", 646 ni->ni_meshid, ":"); 647 ieee80211_print_essid(ni->ni_meshid, 648 ni->ni_meshidlen); 649 /* XXX MCS/HT */ 650 kprintf(" channel %d\n", 651 ieee80211_chan2ieee(ic, ic->ic_curchan)); 652 } 653 #endif 654 break; 655 default: 656 break; 657 } 658 ieee80211_node_authorize(vap->iv_bss); 659 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 660 mesh_rt_cleanup_callout, vap); 661 break; 662 default: 663 break; 664 } 665 /* NB: ostate not nstate */ 666 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 667 return 0; 668 } 669 670 static void 671 mesh_rt_cleanup_callout(void *arg) 672 { 673 struct ieee80211vap *vap = arg; 674 struct ieee80211_mesh_state *ms = vap->iv_mesh; 675 676 wlan_serialize_enter(); 677 mesh_rt_flush_invalid(vap); 678 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 679 mesh_rt_cleanup_callout, vap); 680 wlan_serialize_exit(); 681 } 682 683 684 /* 685 * Helper function to note the Mesh Peer Link FSM change. 686 */ 687 static void 688 mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 689 { 690 struct ieee80211vap *vap = ni->ni_vap; 691 struct ieee80211_mesh_state *ms = vap->iv_mesh; 692 #ifdef IEEE80211_DEBUG 693 static const char *meshlinkstates[] = { 694 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 695 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 696 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 697 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 698 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 699 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 700 }; 701 #endif 702 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 703 ni, "peer link: %s -> %s", 704 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 705 706 /* track neighbor count */ 707 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 708 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 709 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 710 ms->ms_neighbors++; 711 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 712 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 713 state != IEEE80211_NODE_MESH_ESTABLISHED) { 714 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 715 ms->ms_neighbors--; 716 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 717 } 718 ni->ni_mlstate = state; 719 switch (state) { 720 case IEEE80211_NODE_MESH_HOLDING: 721 ms->ms_ppath->mpp_peerdown(ni); 722 break; 723 case IEEE80211_NODE_MESH_ESTABLISHED: 724 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 725 break; 726 default: 727 break; 728 } 729 } 730 731 /* 732 * Helper function to generate a unique local ID required for mesh 733 * peer establishment. 734 */ 735 static void 736 mesh_checkid(void *arg, struct ieee80211_node *ni) 737 { 738 uint16_t *r = arg; 739 740 if (*r == ni->ni_mllid) 741 *(uint16_t *)arg = 0; 742 } 743 744 static uint32_t 745 mesh_generateid(struct ieee80211vap *vap) 746 { 747 int maxiter = 4; 748 uint16_t r; 749 750 do { 751 get_random_bytes(&r, 2); 752 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 753 maxiter--; 754 } while (r == 0 && maxiter > 0); 755 return r; 756 } 757 758 /* 759 * Verifies if we already received this packet by checking its 760 * sequence number. 761 * Returns 0 if the frame is to be accepted, 1 otherwise. 762 */ 763 static int 764 mesh_checkpseq(struct ieee80211vap *vap, 765 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 766 { 767 struct ieee80211_mesh_route *rt; 768 769 rt = ieee80211_mesh_rt_find(vap, source); 770 if (rt == NULL) { 771 rt = ieee80211_mesh_rt_add(vap, source); 772 if (rt == NULL) { 773 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 774 "%s", "add mcast route failed"); 775 vap->iv_stats.is_mesh_rtaddfailed++; 776 return 1; 777 } 778 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 779 "add mcast route, mesh seqno %d", seq); 780 rt->rt_lastmseq = seq; 781 return 0; 782 } 783 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 784 return 1; 785 } else { 786 rt->rt_lastmseq = seq; 787 return 0; 788 } 789 } 790 791 /* 792 * Iterate the routing table and locate the next hop. 793 */ 794 static struct ieee80211_node * 795 mesh_find_txnode(struct ieee80211vap *vap, 796 const uint8_t dest[IEEE80211_ADDR_LEN]) 797 { 798 struct ieee80211_mesh_route *rt; 799 800 rt = ieee80211_mesh_rt_find(vap, dest); 801 if (rt == NULL) 802 return NULL; 803 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 804 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 805 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 806 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 807 /* XXX stat */ 808 return NULL; 809 } 810 return ieee80211_find_txnode(vap, rt->rt_nexthop); 811 } 812 813 /* 814 * Forward the specified frame. 815 * Decrement the TTL and set TA to our MAC address. 816 */ 817 static void 818 mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 819 const struct ieee80211_meshcntl *mc) 820 { 821 struct ieee80211com *ic = vap->iv_ic; 822 struct ieee80211_mesh_state *ms = vap->iv_mesh; 823 struct ifnet *ifp = vap->iv_ifp; 824 struct ifnet *parent = ic->ic_ifp; 825 const struct ieee80211_frame *wh = 826 mtod(m, const struct ieee80211_frame *); 827 struct mbuf *mcopy; 828 struct ieee80211_meshcntl *mccopy; 829 struct ieee80211_frame *whcopy; 830 struct ieee80211_node *ni; 831 int err; 832 833 if (mc->mc_ttl == 0) { 834 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 835 "%s", "frame not fwd'd, ttl 0"); 836 vap->iv_stats.is_mesh_fwd_ttl++; 837 return; 838 } 839 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 840 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 841 "%s", "frame not fwd'd, fwding disabled"); 842 vap->iv_stats.is_mesh_fwd_disabled++; 843 return; 844 } 845 mcopy = m_dup(m, MB_DONTWAIT); 846 if (mcopy == NULL) { 847 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 848 "%s", "frame not fwd'd, cannot dup"); 849 vap->iv_stats.is_mesh_fwd_nobuf++; 850 ifp->if_oerrors++; 851 return; 852 } 853 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 854 sizeof(struct ieee80211_meshcntl)); 855 if (mcopy == NULL) { 856 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 857 "%s", "frame not fwd'd, too short"); 858 vap->iv_stats.is_mesh_fwd_tooshort++; 859 ifp->if_oerrors++; 860 m_freem(mcopy); 861 return; 862 } 863 whcopy = mtod(mcopy, struct ieee80211_frame *); 864 mccopy = (struct ieee80211_meshcntl *) 865 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 866 /* XXX clear other bits? */ 867 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 868 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 869 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 870 ni = ieee80211_ref_node(vap->iv_bss); 871 mcopy->m_flags |= M_MCAST; 872 } else { 873 ni = mesh_find_txnode(vap, whcopy->i_addr3); 874 if (ni == NULL) { 875 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 876 "%s", "frame not fwd'd, no path"); 877 vap->iv_stats.is_mesh_fwd_nopath++; 878 m_freem(mcopy); 879 return; 880 } 881 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 882 } 883 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 884 mccopy->mc_ttl--; 885 886 /* XXX calculate priority so drivers can find the tx queue */ 887 M_WME_SETAC(mcopy, WME_AC_BE); 888 889 /* XXX do we know m_nextpkt is NULL? */ 890 mcopy->m_pkthdr.rcvif = (void *) ni; 891 err = ieee80211_handoff(parent, mcopy); 892 if (err != 0) { 893 /* NB: IFQ_HANDOFF reclaims mbuf */ 894 ieee80211_free_node(ni); 895 } else { 896 ifp->if_opackets++; 897 } 898 } 899 900 static struct mbuf * 901 mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 902 { 903 #define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 904 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 905 sizeof(struct ieee80211_meshcntl_ae11)]; 906 const struct ieee80211_qosframe_addr4 *wh; 907 const struct ieee80211_meshcntl_ae10 *mc; 908 struct ether_header *eh; 909 struct llc *llc; 910 int ae; 911 912 if (m->m_len < hdrlen + sizeof(*llc) && 913 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 914 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 915 "discard data frame: %s", "m_pullup failed"); 916 vap->iv_stats.is_rx_tooshort++; 917 return NULL; 918 } 919 memcpy(b, mtod(m, caddr_t), hdrlen); 920 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 921 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 922 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 923 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 924 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 925 926 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 927 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 928 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 929 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 930 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 931 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 932 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 933 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 934 llc = NULL; 935 } else { 936 m_adj(m, hdrlen - sizeof(*eh)); 937 } 938 eh = mtod(m, struct ether_header *); 939 ae = mc->mc_flags & 3; 940 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 941 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 942 if (ae == 0) { 943 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 944 } else if (ae == 1) { 945 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 946 } else { 947 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 948 (const struct ieee80211_frame *)wh, NULL, 949 "bad AE %d", ae); 950 vap->iv_stats.is_mesh_badae++; 951 m_freem(m); 952 return NULL; 953 } 954 } else { 955 if (ae == 0) { 956 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 957 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 958 } else if (ae == 2) { 959 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 960 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 961 } else { 962 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 963 (const struct ieee80211_frame *)wh, NULL, 964 "bad AE %d", ae); 965 vap->iv_stats.is_mesh_badae++; 966 m_freem(m); 967 return NULL; 968 } 969 } 970 #ifdef ALIGNED_POINTER 971 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 972 m = ieee80211_realign(vap, m, sizeof(*eh)); 973 if (m == NULL) 974 return NULL; 975 } 976 #endif /* ALIGNED_POINTER */ 977 if (llc != NULL) { 978 eh = mtod(m, struct ether_header *); 979 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 980 } 981 return m; 982 #undef WDIR 983 } 984 985 /* 986 * Return non-zero if the unicast mesh data frame should be processed 987 * locally. Frames that are not proxy'd have our address, otherwise 988 * we need to consult the routing table to look for a proxy entry. 989 */ 990 static __inline int 991 mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 992 const struct ieee80211_meshcntl *mc) 993 { 994 int ae = mc->mc_flags & 3; 995 996 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 997 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 998 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 999 if (ae == 2) { /* ucast w/ proxy */ 1000 const struct ieee80211_meshcntl_ae10 *mc10 = 1001 (const struct ieee80211_meshcntl_ae10 *) mc; 1002 struct ieee80211_mesh_route *rt = 1003 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1004 /* check for proxy route to ourself */ 1005 return (rt != NULL && 1006 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1007 } else /* ucast w/o proxy */ 1008 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1009 } 1010 1011 static int 1012 mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1013 { 1014 #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1015 #define HAS_SEQ(type) ((type & 0x4) == 0) 1016 struct ieee80211vap *vap = ni->ni_vap; 1017 struct ieee80211com *ic = ni->ni_ic; 1018 struct ifnet *ifp = vap->iv_ifp; 1019 struct ieee80211_frame *wh; 1020 const struct ieee80211_meshcntl *mc; 1021 int hdrspace, meshdrlen, need_tap; 1022 uint8_t dir, type, subtype, qos; 1023 uint32_t seq; 1024 uint8_t *addr; 1025 ieee80211_seq rxseq; 1026 1027 KASSERT(ni != NULL, ("null node")); 1028 ni->ni_inact = ni->ni_inact_reload; 1029 1030 need_tap = 1; /* mbuf need to be tapped. */ 1031 type = -1; /* undefined */ 1032 1033 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1034 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1035 ni->ni_macaddr, NULL, 1036 "too short (1): len %u", m->m_pkthdr.len); 1037 vap->iv_stats.is_rx_tooshort++; 1038 goto out; 1039 } 1040 /* 1041 * Bit of a cheat here, we use a pointer for a 3-address 1042 * frame format but don't reference fields past outside 1043 * ieee80211_frame_min w/o first validating the data is 1044 * present. 1045 */ 1046 wh = mtod(m, struct ieee80211_frame *); 1047 1048 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1049 IEEE80211_FC0_VERSION_0) { 1050 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1051 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1052 vap->iv_stats.is_rx_badversion++; 1053 goto err; 1054 } 1055 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1056 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1057 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1058 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1059 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1060 ni->ni_noise = nf; 1061 if (HAS_SEQ(type)) { 1062 uint8_t tid = ieee80211_gettid(wh); 1063 1064 if (IEEE80211_QOS_HAS_SEQ(wh) && 1065 TID_TO_WME_AC(tid) >= WME_AC_VI) 1066 ic->ic_wme.wme_hipri_traffic++; 1067 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1068 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1069 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1070 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1071 /* duplicate, discard */ 1072 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1073 wh->i_addr1, "duplicate", 1074 "seqno <%u,%u> fragno <%u,%u> tid %u", 1075 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1076 ni->ni_rxseqs[tid] >> 1077 IEEE80211_SEQ_SEQ_SHIFT, 1078 rxseq & IEEE80211_SEQ_FRAG_MASK, 1079 ni->ni_rxseqs[tid] & 1080 IEEE80211_SEQ_FRAG_MASK, 1081 tid); 1082 vap->iv_stats.is_rx_dup++; 1083 IEEE80211_NODE_STAT(ni, rx_dup); 1084 goto out; 1085 } 1086 ni->ni_rxseqs[tid] = rxseq; 1087 } 1088 } 1089 #ifdef IEEE80211_DEBUG 1090 /* 1091 * It's easier, but too expensive, to simulate different mesh 1092 * topologies by consulting the ACL policy very early, so do this 1093 * only under DEBUG. 1094 * 1095 * NB: this check is also done upon peering link initiation. 1096 */ 1097 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1098 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1099 wh, NULL, "%s", "disallowed by ACL"); 1100 vap->iv_stats.is_rx_acl++; 1101 goto out; 1102 } 1103 #endif 1104 switch (type) { 1105 case IEEE80211_FC0_TYPE_DATA: 1106 if (ni == vap->iv_bss) 1107 goto out; 1108 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1109 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1110 ni->ni_macaddr, NULL, 1111 "peer link not yet established (%d)", 1112 ni->ni_mlstate); 1113 vap->iv_stats.is_mesh_nolink++; 1114 goto out; 1115 } 1116 if (dir != IEEE80211_FC1_DIR_FROMDS && 1117 dir != IEEE80211_FC1_DIR_DSTODS) { 1118 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1119 wh, "data", "incorrect dir 0x%x", dir); 1120 vap->iv_stats.is_rx_wrongdir++; 1121 goto err; 1122 } 1123 /* pull up enough to get to the mesh control */ 1124 hdrspace = ieee80211_hdrspace(ic, wh); 1125 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1126 (m = m_pullup(m, hdrspace + 1127 sizeof(struct ieee80211_meshcntl))) == NULL) { 1128 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1129 ni->ni_macaddr, NULL, 1130 "data too short: expecting %u", hdrspace); 1131 vap->iv_stats.is_rx_tooshort++; 1132 goto out; /* XXX */ 1133 } 1134 /* 1135 * Now calculate the full extent of the headers. Note 1136 * mesh_decap will pull up anything we didn't get 1137 * above when it strips the 802.11 headers. 1138 */ 1139 mc = (const struct ieee80211_meshcntl *) 1140 (mtod(m, const uint8_t *) + hdrspace); 1141 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1142 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1143 hdrspace += meshdrlen; 1144 seq = LE_READ_4(mc->mc_seq); 1145 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1146 addr = wh->i_addr3; 1147 else 1148 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1149 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1150 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1151 addr, "data", "%s", "not to me"); 1152 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1153 goto out; 1154 } 1155 if (mesh_checkpseq(vap, addr, seq) != 0) { 1156 vap->iv_stats.is_rx_dup++; 1157 goto out; 1158 } 1159 1160 /* 1161 * Potentially forward packet. See table s36 (p140) 1162 * for the rules. XXX tap fwd'd packets not for us? 1163 */ 1164 if (dir == IEEE80211_FC1_DIR_FROMDS || 1165 !mesh_isucastforme(vap, wh, mc)) { 1166 mesh_forward(vap, m, mc); 1167 if (dir == IEEE80211_FC1_DIR_DSTODS) 1168 goto out; 1169 /* NB: fall thru to deliver mcast frames locally */ 1170 } 1171 1172 /* 1173 * Save QoS bits for use below--before we strip the header. 1174 */ 1175 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1176 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1177 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1178 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1179 } else 1180 qos = 0; 1181 /* 1182 * Next up, any fragmentation. 1183 */ 1184 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1185 m = ieee80211_defrag(ni, m, hdrspace); 1186 if (m == NULL) { 1187 /* Fragment dropped or frame not complete yet */ 1188 goto out; 1189 } 1190 } 1191 wh = NULL; /* no longer valid, catch any uses */ 1192 1193 if (ieee80211_radiotap_active_vap(vap)) 1194 ieee80211_radiotap_rx(vap, m); 1195 need_tap = 0; 1196 1197 /* 1198 * Finally, strip the 802.11 header. 1199 */ 1200 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1201 if (m == NULL) { 1202 /* XXX mask bit to check for both */ 1203 /* don't count Null data frames as errors */ 1204 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1205 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1206 goto out; 1207 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1208 ni->ni_macaddr, "data", "%s", "decap error"); 1209 vap->iv_stats.is_rx_decap++; 1210 IEEE80211_NODE_STAT(ni, rx_decap); 1211 goto err; 1212 } 1213 if (qos & IEEE80211_QOS_AMSDU) { 1214 m = ieee80211_decap_amsdu(ni, m); 1215 if (m == NULL) 1216 return IEEE80211_FC0_TYPE_DATA; 1217 } 1218 ieee80211_deliver_data(vap, ni, m); 1219 return type; 1220 case IEEE80211_FC0_TYPE_MGT: 1221 vap->iv_stats.is_rx_mgmt++; 1222 IEEE80211_NODE_STAT(ni, rx_mgmt); 1223 if (dir != IEEE80211_FC1_DIR_NODS) { 1224 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1225 wh, "mgt", "incorrect dir 0x%x", dir); 1226 vap->iv_stats.is_rx_wrongdir++; 1227 goto err; 1228 } 1229 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1230 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1231 ni->ni_macaddr, "mgt", "too short: len %u", 1232 m->m_pkthdr.len); 1233 vap->iv_stats.is_rx_tooshort++; 1234 goto out; 1235 } 1236 #ifdef IEEE80211_DEBUG 1237 if ((ieee80211_msg_debug(vap) && 1238 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1239 ieee80211_msg_dumppkts(vap)) { 1240 if_printf(ifp, "received %s from %6D rssi %d\n", 1241 ieee80211_mgt_subtype_name[subtype >> 1242 IEEE80211_FC0_SUBTYPE_SHIFT], 1243 wh->i_addr2, ":", rssi); 1244 } 1245 #endif 1246 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1247 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1248 wh, NULL, "%s", "WEP set but not permitted"); 1249 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1250 goto out; 1251 } 1252 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1253 goto out; 1254 case IEEE80211_FC0_TYPE_CTL: 1255 vap->iv_stats.is_rx_ctl++; 1256 IEEE80211_NODE_STAT(ni, rx_ctrl); 1257 goto out; 1258 default: 1259 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1260 wh, "bad", "frame type 0x%x", type); 1261 /* should not come here */ 1262 break; 1263 } 1264 err: 1265 ifp->if_ierrors++; 1266 out: 1267 if (m != NULL) { 1268 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1269 ieee80211_radiotap_rx(vap, m); 1270 m_freem(m); 1271 } 1272 return type; 1273 } 1274 1275 static void 1276 mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1277 int rssi, int nf) 1278 { 1279 struct ieee80211vap *vap = ni->ni_vap; 1280 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1281 struct ieee80211com *ic = ni->ni_ic; 1282 struct ieee80211_frame *wh; 1283 uint8_t *frm, *efrm; 1284 1285 wh = mtod(m0, struct ieee80211_frame *); 1286 frm = (uint8_t *)&wh[1]; 1287 efrm = mtod(m0, uint8_t *) + m0->m_len; 1288 switch (subtype) { 1289 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1290 case IEEE80211_FC0_SUBTYPE_BEACON: 1291 { 1292 struct ieee80211_scanparams scan; 1293 /* 1294 * We process beacon/probe response 1295 * frames to discover neighbors. 1296 */ 1297 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1298 return; 1299 /* 1300 * Count frame now that we know it's to be processed. 1301 */ 1302 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1303 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1304 IEEE80211_NODE_STAT(ni, rx_beacons); 1305 } else 1306 IEEE80211_NODE_STAT(ni, rx_proberesp); 1307 /* 1308 * If scanning, just pass information to the scan module. 1309 */ 1310 if (ic->ic_flags & IEEE80211_F_SCAN) { 1311 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1312 /* 1313 * Actively scanning a channel marked passive; 1314 * send a probe request now that we know there 1315 * is 802.11 traffic present. 1316 * 1317 * XXX check if the beacon we recv'd gives 1318 * us what we need and suppress the probe req 1319 */ 1320 ieee80211_probe_curchan(vap, 1); 1321 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1322 } 1323 ieee80211_add_scan(vap, &scan, wh, 1324 subtype, rssi, nf); 1325 return; 1326 } 1327 1328 /* The rest of this code assumes we are running */ 1329 if (vap->iv_state != IEEE80211_S_RUN) 1330 return; 1331 /* 1332 * Ignore non-mesh STAs. 1333 */ 1334 if ((scan.capinfo & 1335 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1336 scan.meshid == NULL || scan.meshconf == NULL) { 1337 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1338 wh, "beacon", "%s", "not a mesh sta"); 1339 vap->iv_stats.is_mesh_wrongmesh++; 1340 return; 1341 } 1342 /* 1343 * Ignore STAs for other mesh networks. 1344 */ 1345 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1346 mesh_verify_meshconf(vap, scan.meshconf)) { 1347 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1348 wh, "beacon", "%s", "not for our mesh"); 1349 vap->iv_stats.is_mesh_wrongmesh++; 1350 return; 1351 } 1352 /* 1353 * Peer only based on the current ACL policy. 1354 */ 1355 if (vap->iv_acl != NULL && 1356 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1357 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1358 wh, NULL, "%s", "disallowed by ACL"); 1359 vap->iv_stats.is_rx_acl++; 1360 return; 1361 } 1362 /* 1363 * Do neighbor discovery. 1364 */ 1365 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1366 /* 1367 * Create a new entry in the neighbor table. 1368 */ 1369 ni = ieee80211_add_neighbor(vap, wh, &scan); 1370 } 1371 /* 1372 * Automatically peer with discovered nodes if possible. 1373 * XXX backoff on repeated failure 1374 */ 1375 if (ni != vap->iv_bss && 1376 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1377 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1378 uint16_t args[1]; 1379 1380 ni->ni_mlpid = mesh_generateid(vap); 1381 if (ni->ni_mlpid == 0) 1382 return; 1383 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1384 args[0] = ni->ni_mlpid; 1385 ieee80211_send_action(ni, 1386 IEEE80211_ACTION_CAT_MESHPEERING, 1387 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1388 ni->ni_mlrcnt = 0; 1389 mesh_peer_timeout_setup(ni); 1390 } 1391 break; 1392 } 1393 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1394 { 1395 uint8_t *ssid, *meshid, *rates, *xrates; 1396 uint8_t *sfrm; 1397 1398 if (vap->iv_state != IEEE80211_S_RUN) { 1399 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1400 wh, NULL, "wrong state %s", 1401 ieee80211_state_name[vap->iv_state]); 1402 vap->iv_stats.is_rx_mgtdiscard++; 1403 return; 1404 } 1405 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1406 /* frame must be directed */ 1407 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1408 wh, NULL, "%s", "not unicast"); 1409 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1410 return; 1411 } 1412 /* 1413 * prreq frame format 1414 * [tlv] ssid 1415 * [tlv] supported rates 1416 * [tlv] extended supported rates 1417 * [tlv] mesh id 1418 */ 1419 ssid = meshid = rates = xrates = NULL; 1420 sfrm = frm; 1421 while (efrm - frm > 1) { 1422 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1423 switch (*frm) { 1424 case IEEE80211_ELEMID_SSID: 1425 ssid = frm; 1426 break; 1427 case IEEE80211_ELEMID_RATES: 1428 rates = frm; 1429 break; 1430 case IEEE80211_ELEMID_XRATES: 1431 xrates = frm; 1432 break; 1433 case IEEE80211_ELEMID_MESHID: 1434 meshid = frm; 1435 break; 1436 } 1437 frm += frm[2] + 2; 1438 } 1439 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1440 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1441 if (xrates != NULL) 1442 IEEE80211_VERIFY_ELEMENT(xrates, 1443 IEEE80211_RATE_MAXSIZE - rates[1], return); 1444 if (meshid != NULL) { 1445 IEEE80211_VERIFY_ELEMENT(meshid, 1446 IEEE80211_MESHID_LEN, return); 1447 /* NB: meshid, not ssid */ 1448 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1449 } 1450 1451 /* XXX find a better class or define it's own */ 1452 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1453 "%s", "recv probe req"); 1454 /* 1455 * Some legacy 11b clients cannot hack a complete 1456 * probe response frame. When the request includes 1457 * only a bare-bones rate set, communicate this to 1458 * the transmit side. 1459 */ 1460 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1461 break; 1462 } 1463 case IEEE80211_FC0_SUBTYPE_ACTION: 1464 if (vap->iv_state != IEEE80211_S_RUN) { 1465 vap->iv_stats.is_rx_mgtdiscard++; 1466 break; 1467 } 1468 /* 1469 * We received an action for an unknown neighbor. 1470 * XXX: wait for it to beacon or create ieee80211_node? 1471 */ 1472 if (ni == vap->iv_bss) { 1473 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1474 wh, NULL, "%s", "unknown node"); 1475 vap->iv_stats.is_rx_mgtdiscard++; 1476 break; 1477 } 1478 /* 1479 * Discard if not for us. 1480 */ 1481 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1482 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1483 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1484 wh, NULL, "%s", "not for me"); 1485 vap->iv_stats.is_rx_mgtdiscard++; 1486 break; 1487 } 1488 /* XXX parse_action is a bit useless now */ 1489 if (ieee80211_parse_action(ni, m0) == 0) 1490 ic->ic_recv_action(ni, wh, frm, efrm); 1491 break; 1492 case IEEE80211_FC0_SUBTYPE_AUTH: 1493 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1494 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1495 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1496 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1497 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1498 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1499 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1500 wh, NULL, "%s", "not handled"); 1501 vap->iv_stats.is_rx_mgtdiscard++; 1502 return; 1503 default: 1504 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1505 wh, "mgt", "subtype 0x%x not handled", subtype); 1506 vap->iv_stats.is_rx_badsubtype++; 1507 break; 1508 } 1509 } 1510 1511 /* 1512 * Parse meshpeering action ie's for open+confirm frames; the 1513 * important bits are returned in the supplied structure. 1514 */ 1515 static const struct ieee80211_meshpeer_ie * 1516 mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1517 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1518 const uint8_t *frm, const uint8_t *efrm, 1519 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1520 { 1521 struct ieee80211vap *vap = ni->ni_vap; 1522 const struct ieee80211_meshpeer_ie *mpie; 1523 const uint8_t *meshid, *meshconf, *meshpeer; 1524 1525 meshid = meshconf = meshpeer = NULL; 1526 while (efrm - frm > 1) { 1527 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1528 switch (*frm) { 1529 case IEEE80211_ELEMID_MESHID: 1530 meshid = frm; 1531 break; 1532 case IEEE80211_ELEMID_MESHCONF: 1533 meshconf = frm; 1534 break; 1535 case IEEE80211_ELEMID_MESHPEER: 1536 meshpeer = frm; 1537 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1538 memset(mp, 0, sizeof(*mp)); 1539 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1540 /* NB: peer link ID is optional on these frames */ 1541 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1542 mpie->peer_len == 8) { 1543 mp->peer_linkid = 0; 1544 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1545 } else { 1546 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1547 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1548 } 1549 break; 1550 } 1551 frm += frm[1] + 2; 1552 } 1553 1554 /* 1555 * Verify the contents of the frame. Action frames with 1556 * close subtype don't have a Mesh Configuration IE. 1557 * If if fails validation, close the peer link. 1558 */ 1559 KASSERT(meshpeer != NULL && 1560 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1561 ("parsing close action")); 1562 1563 if (mesh_verify_meshid(vap, meshid) || 1564 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1565 mesh_verify_meshconf(vap, meshconf)) { 1566 uint16_t args[3]; 1567 1568 IEEE80211_DISCARD(vap, 1569 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1570 wh, NULL, "%s", "not for our mesh"); 1571 vap->iv_stats.is_rx_mgtdiscard++; 1572 switch (ni->ni_mlstate) { 1573 case IEEE80211_NODE_MESH_IDLE: 1574 case IEEE80211_NODE_MESH_ESTABLISHED: 1575 case IEEE80211_NODE_MESH_HOLDING: 1576 /* ignore */ 1577 break; 1578 case IEEE80211_NODE_MESH_OPENSNT: 1579 case IEEE80211_NODE_MESH_OPENRCV: 1580 case IEEE80211_NODE_MESH_CONFIRMRCV: 1581 args[0] = ni->ni_mlpid; 1582 args[1] = ni->ni_mllid; 1583 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1584 ieee80211_send_action(ni, 1585 IEEE80211_ACTION_CAT_MESHPEERING, 1586 IEEE80211_ACTION_MESHPEERING_CLOSE, 1587 args); 1588 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1589 mesh_peer_timeout_setup(ni); 1590 break; 1591 } 1592 return NULL; 1593 } 1594 return (const struct ieee80211_meshpeer_ie *) mp; 1595 } 1596 1597 static int 1598 mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1599 const struct ieee80211_frame *wh, 1600 const uint8_t *frm, const uint8_t *efrm) 1601 { 1602 struct ieee80211vap *vap = ni->ni_vap; 1603 struct ieee80211_meshpeer_ie ie; 1604 const struct ieee80211_meshpeer_ie *meshpeer; 1605 uint16_t args[3]; 1606 1607 /* +2+2 for action + code + capabilites */ 1608 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1609 IEEE80211_ACTION_MESHPEERING_OPEN); 1610 if (meshpeer == NULL) { 1611 return 0; 1612 } 1613 1614 /* XXX move up */ 1615 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1616 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1617 1618 switch (ni->ni_mlstate) { 1619 case IEEE80211_NODE_MESH_IDLE: 1620 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1621 ni->ni_mllid = meshpeer->peer_llinkid; 1622 ni->ni_mlpid = mesh_generateid(vap); 1623 if (ni->ni_mlpid == 0) 1624 return 0; /* XXX */ 1625 args[0] = ni->ni_mlpid; 1626 /* Announce we're open too... */ 1627 ieee80211_send_action(ni, 1628 IEEE80211_ACTION_CAT_MESHPEERING, 1629 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1630 /* ...and confirm the link. */ 1631 args[0] = ni->ni_mlpid; 1632 args[1] = ni->ni_mllid; 1633 ieee80211_send_action(ni, 1634 IEEE80211_ACTION_CAT_MESHPEERING, 1635 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1636 args); 1637 mesh_peer_timeout_setup(ni); 1638 break; 1639 case IEEE80211_NODE_MESH_OPENRCV: 1640 /* Wrong Link ID */ 1641 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1642 args[0] = ni->ni_mllid; 1643 args[1] = ni->ni_mlpid; 1644 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1645 ieee80211_send_action(ni, 1646 IEEE80211_ACTION_CAT_MESHPEERING, 1647 IEEE80211_ACTION_MESHPEERING_CLOSE, 1648 args); 1649 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1650 mesh_peer_timeout_setup(ni); 1651 break; 1652 } 1653 /* Duplicate open, confirm again. */ 1654 args[0] = ni->ni_mlpid; 1655 args[1] = ni->ni_mllid; 1656 ieee80211_send_action(ni, 1657 IEEE80211_ACTION_CAT_MESHPEERING, 1658 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1659 args); 1660 break; 1661 case IEEE80211_NODE_MESH_OPENSNT: 1662 ni->ni_mllid = meshpeer->peer_llinkid; 1663 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1664 args[0] = ni->ni_mlpid; 1665 args[1] = ni->ni_mllid; 1666 ieee80211_send_action(ni, 1667 IEEE80211_ACTION_CAT_MESHPEERING, 1668 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1669 args); 1670 /* NB: don't setup/clear any timeout */ 1671 break; 1672 case IEEE80211_NODE_MESH_CONFIRMRCV: 1673 if (ni->ni_mlpid != meshpeer->peer_linkid || 1674 ni->ni_mllid != meshpeer->peer_llinkid) { 1675 args[0] = ni->ni_mlpid; 1676 args[1] = ni->ni_mllid; 1677 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1678 ieee80211_send_action(ni, 1679 IEEE80211_ACTION_CAT_MESHPEERING, 1680 IEEE80211_ACTION_MESHPEERING_CLOSE, 1681 args); 1682 mesh_linkchange(ni, 1683 IEEE80211_NODE_MESH_HOLDING); 1684 mesh_peer_timeout_setup(ni); 1685 break; 1686 } 1687 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1688 ni->ni_mllid = meshpeer->peer_llinkid; 1689 args[0] = ni->ni_mlpid; 1690 args[1] = ni->ni_mllid; 1691 ieee80211_send_action(ni, 1692 IEEE80211_ACTION_CAT_MESHPEERING, 1693 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1694 args); 1695 mesh_peer_timeout_stop(ni); 1696 break; 1697 case IEEE80211_NODE_MESH_ESTABLISHED: 1698 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1699 args[0] = ni->ni_mllid; 1700 args[1] = ni->ni_mlpid; 1701 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1702 ieee80211_send_action(ni, 1703 IEEE80211_ACTION_CAT_MESHPEERING, 1704 IEEE80211_ACTION_MESHPEERING_CLOSE, 1705 args); 1706 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1707 mesh_peer_timeout_setup(ni); 1708 break; 1709 } 1710 args[0] = ni->ni_mlpid; 1711 args[1] = ni->ni_mllid; 1712 ieee80211_send_action(ni, 1713 IEEE80211_ACTION_CAT_MESHPEERING, 1714 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1715 args); 1716 break; 1717 case IEEE80211_NODE_MESH_HOLDING: 1718 args[0] = ni->ni_mlpid; 1719 args[1] = meshpeer->peer_llinkid; 1720 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1721 ieee80211_send_action(ni, 1722 IEEE80211_ACTION_CAT_MESHPEERING, 1723 IEEE80211_ACTION_MESHPEERING_CLOSE, 1724 args); 1725 break; 1726 } 1727 return 0; 1728 } 1729 1730 static int 1731 mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1732 const struct ieee80211_frame *wh, 1733 const uint8_t *frm, const uint8_t *efrm) 1734 { 1735 struct ieee80211vap *vap = ni->ni_vap; 1736 struct ieee80211_meshpeer_ie ie; 1737 const struct ieee80211_meshpeer_ie *meshpeer; 1738 uint16_t args[3]; 1739 1740 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1741 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1742 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1743 if (meshpeer == NULL) { 1744 return 0; 1745 } 1746 1747 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1748 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1749 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1750 1751 switch (ni->ni_mlstate) { 1752 case IEEE80211_NODE_MESH_OPENRCV: 1753 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1754 mesh_peer_timeout_stop(ni); 1755 break; 1756 case IEEE80211_NODE_MESH_OPENSNT: 1757 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1758 break; 1759 case IEEE80211_NODE_MESH_HOLDING: 1760 args[0] = ni->ni_mlpid; 1761 args[1] = meshpeer->peer_llinkid; 1762 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1763 ieee80211_send_action(ni, 1764 IEEE80211_ACTION_CAT_MESHPEERING, 1765 IEEE80211_ACTION_MESHPEERING_CLOSE, 1766 args); 1767 break; 1768 case IEEE80211_NODE_MESH_CONFIRMRCV: 1769 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1770 args[0] = ni->ni_mlpid; 1771 args[1] = ni->ni_mllid; 1772 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1773 ieee80211_send_action(ni, 1774 IEEE80211_ACTION_CAT_MESHPEERING, 1775 IEEE80211_ACTION_MESHPEERING_CLOSE, 1776 args); 1777 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1778 mesh_peer_timeout_setup(ni); 1779 } 1780 break; 1781 default: 1782 IEEE80211_DISCARD(vap, 1783 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1784 wh, NULL, "received confirm in invalid state %d", 1785 ni->ni_mlstate); 1786 vap->iv_stats.is_rx_mgtdiscard++; 1787 break; 1788 } 1789 return 0; 1790 } 1791 1792 static int 1793 mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1794 const struct ieee80211_frame *wh, 1795 const uint8_t *frm, const uint8_t *efrm) 1796 { 1797 uint16_t args[3]; 1798 1799 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1800 ni, "%s", "recv PEER CLOSE"); 1801 1802 switch (ni->ni_mlstate) { 1803 case IEEE80211_NODE_MESH_IDLE: 1804 /* ignore */ 1805 break; 1806 case IEEE80211_NODE_MESH_OPENRCV: 1807 case IEEE80211_NODE_MESH_OPENSNT: 1808 case IEEE80211_NODE_MESH_CONFIRMRCV: 1809 case IEEE80211_NODE_MESH_ESTABLISHED: 1810 args[0] = ni->ni_mlpid; 1811 args[1] = ni->ni_mllid; 1812 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1813 ieee80211_send_action(ni, 1814 IEEE80211_ACTION_CAT_MESHPEERING, 1815 IEEE80211_ACTION_MESHPEERING_CLOSE, 1816 args); 1817 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1818 mesh_peer_timeout_setup(ni); 1819 break; 1820 case IEEE80211_NODE_MESH_HOLDING: 1821 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1822 mesh_peer_timeout_setup(ni); 1823 break; 1824 } 1825 return 0; 1826 } 1827 1828 /* 1829 * Link Metric handling. 1830 */ 1831 static int 1832 mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1833 const struct ieee80211_frame *wh, 1834 const uint8_t *frm, const uint8_t *efrm) 1835 { 1836 uint32_t metric; 1837 1838 metric = mesh_airtime_calc(ni); 1839 ieee80211_send_action(ni, 1840 IEEE80211_ACTION_CAT_MESHLMETRIC, 1841 IEEE80211_ACTION_MESHLMETRIC_REP, 1842 &metric); 1843 return 0; 1844 } 1845 1846 static int 1847 mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1848 const struct ieee80211_frame *wh, 1849 const uint8_t *frm, const uint8_t *efrm) 1850 { 1851 return 0; 1852 } 1853 1854 static int 1855 mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1856 { 1857 struct ieee80211_bpf_params params; 1858 1859 memset(¶ms, 0, sizeof(params)); 1860 params.ibp_pri = WME_AC_VO; 1861 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1862 /* XXX ucast/mcast */ 1863 params.ibp_try0 = ni->ni_txparms->maxretry; 1864 params.ibp_power = ni->ni_txpower; 1865 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1866 ¶ms); 1867 } 1868 1869 #define ADDSHORT(frm, v) do { \ 1870 frm[0] = (v) & 0xff; \ 1871 frm[1] = (v) >> 8; \ 1872 frm += 2; \ 1873 } while (0) 1874 #define ADDWORD(frm, v) do { \ 1875 frm[0] = (v) & 0xff; \ 1876 frm[1] = ((v) >> 8) & 0xff; \ 1877 frm[2] = ((v) >> 16) & 0xff; \ 1878 frm[3] = ((v) >> 24) & 0xff; \ 1879 frm += 4; \ 1880 } while (0) 1881 1882 static int 1883 mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1884 int category, int action, void *args0) 1885 { 1886 struct ieee80211vap *vap = ni->ni_vap; 1887 struct ieee80211com *ic = ni->ni_ic; 1888 uint16_t *args = args0; 1889 const struct ieee80211_rateset *rs; 1890 struct mbuf *m; 1891 uint8_t *frm; 1892 1893 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1894 "send PEER OPEN action: localid 0x%x", args[0]); 1895 1896 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1897 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 1898 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 1899 ieee80211_ref_node(ni); 1900 1901 m = ieee80211_getmgtframe(&frm, 1902 ic->ic_headroom + sizeof(struct ieee80211_frame), 1903 sizeof(uint16_t) /* action+category */ 1904 + sizeof(uint16_t) /* capabilites */ 1905 + 2 + IEEE80211_RATE_SIZE 1906 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1907 + 2 + IEEE80211_MESHID_LEN 1908 + sizeof(struct ieee80211_meshconf_ie) 1909 + sizeof(struct ieee80211_meshpeer_ie) 1910 ); 1911 if (m != NULL) { 1912 /* 1913 * mesh peer open action frame format: 1914 * [1] category 1915 * [1] action 1916 * [2] capabilities 1917 * [tlv] rates 1918 * [tlv] xrates 1919 * [tlv] mesh id 1920 * [tlv] mesh conf 1921 * [tlv] mesh peer link mgmt 1922 */ 1923 *frm++ = category; 1924 *frm++ = action; 1925 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1926 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1927 frm = ieee80211_add_rates(frm, rs); 1928 frm = ieee80211_add_xrates(frm, rs); 1929 frm = ieee80211_add_meshid(frm, vap); 1930 frm = ieee80211_add_meshconf(frm, vap); 1931 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1932 args[0], 0, 0); 1933 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1934 return mesh_send_action(ni, m); 1935 } else { 1936 vap->iv_stats.is_tx_nobuf++; 1937 ieee80211_free_node(ni); 1938 return ENOMEM; 1939 } 1940 } 1941 1942 static int 1943 mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1944 int category, int action, void *args0) 1945 { 1946 struct ieee80211vap *vap = ni->ni_vap; 1947 struct ieee80211com *ic = ni->ni_ic; 1948 uint16_t *args = args0; 1949 const struct ieee80211_rateset *rs; 1950 struct mbuf *m; 1951 uint8_t *frm; 1952 1953 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1954 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1955 args[0], args[1]); 1956 1957 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1958 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 1959 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 1960 ieee80211_ref_node(ni); 1961 1962 m = ieee80211_getmgtframe(&frm, 1963 ic->ic_headroom + sizeof(struct ieee80211_frame), 1964 sizeof(uint16_t) /* action+category */ 1965 + sizeof(uint16_t) /* capabilites */ 1966 + sizeof(uint16_t) /* status code */ 1967 + sizeof(uint16_t) /* AID */ 1968 + 2 + IEEE80211_RATE_SIZE 1969 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1970 + 2 + IEEE80211_MESHID_LEN 1971 + sizeof(struct ieee80211_meshconf_ie) 1972 + sizeof(struct ieee80211_meshpeer_ie) 1973 ); 1974 if (m != NULL) { 1975 /* 1976 * mesh peer confirm action frame format: 1977 * [1] category 1978 * [1] action 1979 * [2] capabilities 1980 * [2] status code 1981 * [2] association id (peer ID) 1982 * [tlv] rates 1983 * [tlv] xrates 1984 * [tlv] mesh id 1985 * [tlv] mesh conf 1986 * [tlv] mesh peer link mgmt 1987 */ 1988 *frm++ = category; 1989 *frm++ = action; 1990 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1991 ADDSHORT(frm, 0); /* status code */ 1992 ADDSHORT(frm, args[1]); /* AID */ 1993 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1994 frm = ieee80211_add_rates(frm, rs); 1995 frm = ieee80211_add_xrates(frm, rs); 1996 frm = ieee80211_add_meshid(frm, vap); 1997 frm = ieee80211_add_meshconf(frm, vap); 1998 frm = ieee80211_add_meshpeer(frm, 1999 IEEE80211_MESH_PEER_LINK_CONFIRM, 2000 args[0], args[1], 0); 2001 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2002 return mesh_send_action(ni, m); 2003 } else { 2004 vap->iv_stats.is_tx_nobuf++; 2005 ieee80211_free_node(ni); 2006 return ENOMEM; 2007 } 2008 } 2009 2010 static int 2011 mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2012 int category, int action, void *args0) 2013 { 2014 struct ieee80211vap *vap = ni->ni_vap; 2015 struct ieee80211com *ic = ni->ni_ic; 2016 uint16_t *args = args0; 2017 struct mbuf *m; 2018 uint8_t *frm; 2019 2020 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2021 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2022 args[0], args[1], args[2]); 2023 2024 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2025 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2026 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2027 ieee80211_ref_node(ni); 2028 2029 m = ieee80211_getmgtframe(&frm, 2030 ic->ic_headroom + sizeof(struct ieee80211_frame), 2031 sizeof(uint16_t) /* action+category */ 2032 + sizeof(uint16_t) /* reason code */ 2033 + 2 + IEEE80211_MESHID_LEN 2034 + sizeof(struct ieee80211_meshpeer_ie) 2035 ); 2036 if (m != NULL) { 2037 /* 2038 * mesh peer close action frame format: 2039 * [1] category 2040 * [1] action 2041 * [2] reason code 2042 * [tlv] mesh id 2043 * [tlv] mesh peer link mgmt 2044 */ 2045 *frm++ = category; 2046 *frm++ = action; 2047 ADDSHORT(frm, args[2]); /* reason code */ 2048 frm = ieee80211_add_meshid(frm, vap); 2049 frm = ieee80211_add_meshpeer(frm, 2050 IEEE80211_MESH_PEER_LINK_CLOSE, 2051 args[0], args[1], args[2]); 2052 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2053 return mesh_send_action(ni, m); 2054 } else { 2055 vap->iv_stats.is_tx_nobuf++; 2056 ieee80211_free_node(ni); 2057 return ENOMEM; 2058 } 2059 } 2060 2061 static int 2062 mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2063 int category, int action, void *arg0) 2064 { 2065 struct ieee80211vap *vap = ni->ni_vap; 2066 struct ieee80211com *ic = ni->ni_ic; 2067 struct mbuf *m; 2068 uint8_t *frm; 2069 2070 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2071 "%s", "send LINK METRIC REQUEST action"); 2072 2073 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2074 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2075 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2076 ieee80211_ref_node(ni); 2077 2078 m = ieee80211_getmgtframe(&frm, 2079 ic->ic_headroom + sizeof(struct ieee80211_frame), 2080 sizeof(uint16_t) /* action+category */ 2081 ); 2082 if (m != NULL) { 2083 /* 2084 * mesh link metric request 2085 * [1] category 2086 * [1] action 2087 */ 2088 *frm++ = category; 2089 *frm++ = action; 2090 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2091 return mesh_send_action(ni, m); 2092 } else { 2093 vap->iv_stats.is_tx_nobuf++; 2094 ieee80211_free_node(ni); 2095 return ENOMEM; 2096 } 2097 } 2098 2099 static int 2100 mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2101 int category, int action, void *args0) 2102 { 2103 struct ieee80211vap *vap = ni->ni_vap; 2104 struct ieee80211com *ic = ni->ni_ic; 2105 uint32_t *metric = args0; 2106 struct mbuf *m; 2107 uint8_t *frm; 2108 2109 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2110 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2111 2112 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2113 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2114 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2115 ieee80211_ref_node(ni); 2116 2117 m = ieee80211_getmgtframe(&frm, 2118 ic->ic_headroom + sizeof(struct ieee80211_frame), 2119 sizeof(uint16_t) /* action+category */ 2120 + sizeof(struct ieee80211_meshlmetric_ie) 2121 ); 2122 if (m != NULL) { 2123 /* 2124 * mesh link metric reply 2125 * [1] category 2126 * [1] action 2127 * [tlv] mesh link metric 2128 */ 2129 *frm++ = category; 2130 *frm++ = action; 2131 frm = ieee80211_add_meshlmetric(frm, *metric); 2132 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2133 return mesh_send_action(ni, m); 2134 } else { 2135 vap->iv_stats.is_tx_nobuf++; 2136 ieee80211_free_node(ni); 2137 return ENOMEM; 2138 } 2139 } 2140 2141 static void 2142 mesh_peer_timeout_setup(struct ieee80211_node *ni) 2143 { 2144 switch (ni->ni_mlstate) { 2145 case IEEE80211_NODE_MESH_HOLDING: 2146 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2147 break; 2148 case IEEE80211_NODE_MESH_CONFIRMRCV: 2149 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2150 break; 2151 case IEEE80211_NODE_MESH_IDLE: 2152 ni->ni_mltval = 0; 2153 break; 2154 default: 2155 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2156 break; 2157 } 2158 if (ni->ni_mltval) { 2159 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2160 mesh_peer_timeout_callout, ni); 2161 } 2162 } 2163 2164 /* 2165 * Same as above but backoffs timer statisically 50%. 2166 */ 2167 static void 2168 mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2169 { 2170 uint32_t r; 2171 2172 r = karc4random(); 2173 ni->ni_mltval += r % ni->ni_mltval; 2174 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2175 mesh_peer_timeout_callout, ni); 2176 } 2177 2178 static __inline void 2179 mesh_peer_timeout_stop(struct ieee80211_node *ni) 2180 { 2181 callout_stop(&ni->ni_mltimer); 2182 } 2183 2184 /* 2185 * Mesh Peer Link Management FSM timeout handling. 2186 */ 2187 static void 2188 mesh_peer_timeout_callout(void *arg) 2189 { 2190 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2191 uint16_t args[3]; 2192 2193 wlan_serialize_enter(); 2194 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2195 ni, "mesh link timeout, state %d, retry counter %d", 2196 ni->ni_mlstate, ni->ni_mlrcnt); 2197 2198 switch (ni->ni_mlstate) { 2199 case IEEE80211_NODE_MESH_IDLE: 2200 case IEEE80211_NODE_MESH_ESTABLISHED: 2201 break; 2202 case IEEE80211_NODE_MESH_OPENSNT: 2203 case IEEE80211_NODE_MESH_OPENRCV: 2204 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2205 args[0] = ni->ni_mlpid; 2206 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2207 ieee80211_send_action(ni, 2208 IEEE80211_ACTION_CAT_MESHPEERING, 2209 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2210 ni->ni_mlrcnt = 0; 2211 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2212 mesh_peer_timeout_setup(ni); 2213 } else { 2214 args[0] = ni->ni_mlpid; 2215 ieee80211_send_action(ni, 2216 IEEE80211_ACTION_CAT_MESHPEERING, 2217 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2218 ni->ni_mlrcnt++; 2219 mesh_peer_timeout_backoff(ni); 2220 } 2221 break; 2222 case IEEE80211_NODE_MESH_CONFIRMRCV: 2223 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2224 args[0] = ni->ni_mlpid; 2225 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2226 ieee80211_send_action(ni, 2227 IEEE80211_ACTION_CAT_MESHPEERING, 2228 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2229 ni->ni_mlrcnt = 0; 2230 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2231 mesh_peer_timeout_setup(ni); 2232 } else { 2233 ni->ni_mlrcnt++; 2234 mesh_peer_timeout_setup(ni); 2235 } 2236 break; 2237 case IEEE80211_NODE_MESH_HOLDING: 2238 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2239 break; 2240 } 2241 wlan_serialize_exit(); 2242 } 2243 2244 static int 2245 mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2246 { 2247 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2248 2249 if (ie == NULL || ie[1] != ms->ms_idlen) 2250 return 1; 2251 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2252 } 2253 2254 /* 2255 * Check if we are using the same algorithms for this mesh. 2256 */ 2257 static int 2258 mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2259 { 2260 const struct ieee80211_meshconf_ie *meshconf = 2261 (const struct ieee80211_meshconf_ie *) ie; 2262 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2263 uint16_t cap; 2264 2265 if (meshconf == NULL) 2266 return 1; 2267 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2268 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2269 "unknown path selection algorithm: 0x%x\n", 2270 meshconf->conf_pselid); 2271 return 1; 2272 } 2273 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2274 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2275 "unknown path metric algorithm: 0x%x\n", 2276 meshconf->conf_pmetid); 2277 return 1; 2278 } 2279 if (meshconf->conf_ccid != 0) { 2280 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2281 "unknown congestion control algorithm: 0x%x\n", 2282 meshconf->conf_ccid); 2283 return 1; 2284 } 2285 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2286 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2287 "unknown sync algorithm: 0x%x\n", 2288 meshconf->conf_syncid); 2289 return 1; 2290 } 2291 if (meshconf->conf_authid != 0) { 2292 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2293 "unknown auth auth algorithm: 0x%x\n", 2294 meshconf->conf_pselid); 2295 return 1; 2296 } 2297 /* NB: conf_cap is only read correctly here */ 2298 cap = LE_READ_2(&meshconf->conf_cap); 2299 /* Not accepting peers */ 2300 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) { 2301 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2302 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2303 return 1; 2304 } 2305 return 0; 2306 } 2307 2308 static int 2309 mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2310 const uint8_t *ie) 2311 { 2312 const struct ieee80211_meshpeer_ie *meshpeer = 2313 (const struct ieee80211_meshpeer_ie *) ie; 2314 2315 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2316 meshpeer->peer_len > 10) 2317 return 1; 2318 switch (subtype) { 2319 case IEEE80211_MESH_PEER_LINK_OPEN: 2320 if (meshpeer->peer_len != 6) 2321 return 1; 2322 break; 2323 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2324 if (meshpeer->peer_len != 8) 2325 return 1; 2326 break; 2327 case IEEE80211_MESH_PEER_LINK_CLOSE: 2328 if (meshpeer->peer_len < 8) 2329 return 1; 2330 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2331 return 1; 2332 if (meshpeer->peer_rcode == 0) 2333 return 1; 2334 break; 2335 } 2336 return 0; 2337 } 2338 2339 /* 2340 * Add a Mesh ID IE to a frame. 2341 */ 2342 uint8_t * 2343 ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2344 { 2345 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2346 2347 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2348 2349 *frm++ = IEEE80211_ELEMID_MESHID; 2350 *frm++ = ms->ms_idlen; 2351 memcpy(frm, ms->ms_id, ms->ms_idlen); 2352 return frm + ms->ms_idlen; 2353 } 2354 2355 /* 2356 * Add a Mesh Configuration IE to a frame. 2357 * For now just use HWMP routing, Airtime link metric, Null Congestion 2358 * Signaling, Null Sync Protocol and Null Authentication. 2359 */ 2360 uint8_t * 2361 ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2362 { 2363 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2364 uint16_t caps; 2365 2366 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2367 2368 *frm++ = IEEE80211_ELEMID_MESHCONF; 2369 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2370 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2371 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2372 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2373 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2374 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2375 /* NB: set the number of neighbors before the rest */ 2376 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2377 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2378 *frm |= IEEE80211_MESHCONF_FORM_MP; 2379 frm += 1; 2380 caps = 0; 2381 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2382 caps |= IEEE80211_MESHCONF_CAP_AP; 2383 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2384 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2385 ADDSHORT(frm, caps); 2386 return frm; 2387 } 2388 2389 /* 2390 * Add a Mesh Peer Management IE to a frame. 2391 */ 2392 uint8_t * 2393 ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2394 uint16_t peerid, uint16_t reason) 2395 { 2396 /* XXX change for AH */ 2397 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2398 2399 KASSERT(localid != 0, ("localid == 0")); 2400 2401 *frm++ = IEEE80211_ELEMID_MESHPEER; 2402 switch (subtype) { 2403 case IEEE80211_MESH_PEER_LINK_OPEN: 2404 *frm++ = 6; /* length */ 2405 memcpy(frm, meshpeerproto, 4); 2406 frm += 4; 2407 ADDSHORT(frm, localid); /* local ID */ 2408 break; 2409 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2410 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2411 *frm++ = 8; /* length */ 2412 memcpy(frm, meshpeerproto, 4); 2413 frm += 4; 2414 ADDSHORT(frm, localid); /* local ID */ 2415 ADDSHORT(frm, peerid); /* peer ID */ 2416 break; 2417 case IEEE80211_MESH_PEER_LINK_CLOSE: 2418 if (peerid) 2419 *frm++ = 10; /* length */ 2420 else 2421 *frm++ = 8; /* length */ 2422 memcpy(frm, meshpeerproto, 4); 2423 frm += 4; 2424 ADDSHORT(frm, localid); /* local ID */ 2425 if (peerid) 2426 ADDSHORT(frm, peerid); /* peer ID */ 2427 ADDSHORT(frm, reason); 2428 break; 2429 } 2430 return frm; 2431 } 2432 2433 /* 2434 * Compute an Airtime Link Metric for the link with this node. 2435 * 2436 * Based on Draft 3.0 spec (11B.10, p.149). 2437 */ 2438 /* 2439 * Max 802.11s overhead. 2440 */ 2441 #define IEEE80211_MESH_MAXOVERHEAD \ 2442 (sizeof(struct ieee80211_qosframe_addr4) \ 2443 + sizeof(struct ieee80211_meshcntl_ae11) \ 2444 + sizeof(struct llc) \ 2445 + IEEE80211_ADDR_LEN \ 2446 + IEEE80211_WEP_IVLEN \ 2447 + IEEE80211_WEP_KIDLEN \ 2448 + IEEE80211_WEP_CRCLEN \ 2449 + IEEE80211_WEP_MICLEN \ 2450 + IEEE80211_CRC_LEN) 2451 uint32_t 2452 mesh_airtime_calc(struct ieee80211_node *ni) 2453 { 2454 #define M_BITS 8 2455 #define S_FACTOR (2 * M_BITS) 2456 struct ieee80211com *ic = ni->ni_ic; 2457 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2458 static const int nbits = 8192 << M_BITS; 2459 uint32_t overhead, rate, errrate; 2460 uint64_t res; 2461 2462 /* Time to transmit a frame */ 2463 rate = ni->ni_txrate; 2464 overhead = ieee80211_compute_duration(ic->ic_rt, 2465 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2466 /* Error rate in percentage */ 2467 /* XXX assuming small failures are ok */ 2468 errrate = (((ifp->if_oerrors + 2469 ifp->if_ierrors) / 100) << M_BITS) / 100; 2470 res = (overhead + (nbits / rate)) * 2471 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2472 2473 return (uint32_t)(res >> S_FACTOR); 2474 #undef M_BITS 2475 #undef S_FACTOR 2476 } 2477 2478 /* 2479 * Add a Mesh Link Metric report IE to a frame. 2480 */ 2481 uint8_t * 2482 ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2483 { 2484 *frm++ = IEEE80211_ELEMID_MESHLINK; 2485 *frm++ = 4; 2486 ADDWORD(frm, metric); 2487 return frm; 2488 } 2489 #undef ADDSHORT 2490 #undef ADDWORD 2491 2492 /* 2493 * Initialize any mesh-specific node state. 2494 */ 2495 void 2496 ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2497 { 2498 ni->ni_flags |= IEEE80211_NODE_QOS; 2499 callout_init_mp(&ni->ni_mltimer); 2500 } 2501 2502 /* 2503 * Cleanup any mesh-specific node state. 2504 */ 2505 void 2506 ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2507 { 2508 struct ieee80211vap *vap = ni->ni_vap; 2509 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2510 2511 callout_stop(&ni->ni_mltimer); 2512 /* NB: short-circuit callbacks after mesh_vdetach */ 2513 if (vap->iv_mesh != NULL) 2514 ms->ms_ppath->mpp_peerdown(ni); 2515 } 2516 2517 void 2518 ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2519 { 2520 ni->ni_meshidlen = ie[1]; 2521 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2522 } 2523 2524 /* 2525 * Setup mesh-specific node state on neighbor discovery. 2526 */ 2527 void 2528 ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2529 const struct ieee80211_frame *wh, 2530 const struct ieee80211_scanparams *sp) 2531 { 2532 ieee80211_parse_meshid(ni, sp->meshid); 2533 } 2534 2535 void 2536 ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2537 struct ieee80211_beacon_offsets *bo) 2538 { 2539 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2540 2541 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2542 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2543 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2544 } 2545 } 2546 2547 static int 2548 mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2549 { 2550 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2551 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2552 struct ieee80211_mesh_route *rt; 2553 struct ieee80211req_mesh_route *imr; 2554 size_t len, off; 2555 uint8_t *p; 2556 int error; 2557 2558 if (vap->iv_opmode != IEEE80211_M_MBSS) 2559 return ENOSYS; 2560 2561 error = 0; 2562 switch (ireq->i_type) { 2563 case IEEE80211_IOC_MESH_ID: 2564 ireq->i_len = ms->ms_idlen; 2565 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2566 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2567 break; 2568 case IEEE80211_IOC_MESH_AP: 2569 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2570 break; 2571 case IEEE80211_IOC_MESH_FWRD: 2572 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2573 break; 2574 case IEEE80211_IOC_MESH_TTL: 2575 ireq->i_val = ms->ms_ttl; 2576 break; 2577 case IEEE80211_IOC_MESH_RTCMD: 2578 switch (ireq->i_val) { 2579 case IEEE80211_MESH_RTCMD_LIST: 2580 len = 0; 2581 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2582 len += sizeof(*imr); 2583 } 2584 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2585 ireq->i_len = len; 2586 return ENOMEM; 2587 } 2588 ireq->i_len = len; 2589 /* XXX M_WAIT? */ 2590 p = kmalloc(len, M_TEMP, M_INTWAIT | M_ZERO); 2591 if (p == NULL) 2592 return ENOMEM; 2593 off = 0; 2594 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2595 if (off >= len) 2596 break; 2597 imr = (struct ieee80211req_mesh_route *) 2598 (p + off); 2599 imr->imr_flags = rt->rt_flags; 2600 IEEE80211_ADDR_COPY(imr->imr_dest, 2601 rt->rt_dest); 2602 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2603 rt->rt_nexthop); 2604 imr->imr_metric = rt->rt_metric; 2605 imr->imr_nhops = rt->rt_nhops; 2606 imr->imr_lifetime = rt->rt_lifetime; 2607 imr->imr_lastmseq = rt->rt_lastmseq; 2608 off += sizeof(*imr); 2609 } 2610 error = copyout(p, (uint8_t *)ireq->i_data, 2611 ireq->i_len); 2612 kfree(p, M_TEMP); 2613 break; 2614 case IEEE80211_MESH_RTCMD_FLUSH: 2615 case IEEE80211_MESH_RTCMD_ADD: 2616 case IEEE80211_MESH_RTCMD_DELETE: 2617 return EINVAL; 2618 default: 2619 return ENOSYS; 2620 } 2621 break; 2622 case IEEE80211_IOC_MESH_PR_METRIC: 2623 len = strlen(ms->ms_pmetric->mpm_descr); 2624 if (ireq->i_len < len) 2625 return EINVAL; 2626 ireq->i_len = len; 2627 error = copyout(ms->ms_pmetric->mpm_descr, 2628 (uint8_t *)ireq->i_data, len); 2629 break; 2630 case IEEE80211_IOC_MESH_PR_PATH: 2631 len = strlen(ms->ms_ppath->mpp_descr); 2632 if (ireq->i_len < len) 2633 return EINVAL; 2634 ireq->i_len = len; 2635 error = copyout(ms->ms_ppath->mpp_descr, 2636 (uint8_t *)ireq->i_data, len); 2637 break; 2638 default: 2639 return ENOSYS; 2640 } 2641 2642 return error; 2643 } 2644 IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2645 2646 static int 2647 mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2648 { 2649 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2650 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2651 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2652 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2653 int error; 2654 2655 if (vap->iv_opmode != IEEE80211_M_MBSS) 2656 return ENOSYS; 2657 2658 error = 0; 2659 switch (ireq->i_type) { 2660 case IEEE80211_IOC_MESH_ID: 2661 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2662 return EINVAL; 2663 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2664 if (error != 0) 2665 break; 2666 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2667 ms->ms_idlen = ireq->i_len; 2668 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2669 error = ENETRESET; 2670 break; 2671 case IEEE80211_IOC_MESH_AP: 2672 if (ireq->i_val) 2673 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2674 else 2675 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2676 error = ENETRESET; 2677 break; 2678 case IEEE80211_IOC_MESH_FWRD: 2679 if (ireq->i_val) 2680 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2681 else 2682 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2683 break; 2684 case IEEE80211_IOC_MESH_TTL: 2685 ms->ms_ttl = (uint8_t) ireq->i_val; 2686 break; 2687 case IEEE80211_IOC_MESH_RTCMD: 2688 switch (ireq->i_val) { 2689 case IEEE80211_MESH_RTCMD_LIST: 2690 return EINVAL; 2691 case IEEE80211_MESH_RTCMD_FLUSH: 2692 ieee80211_mesh_rt_flush(vap); 2693 break; 2694 case IEEE80211_MESH_RTCMD_ADD: 2695 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2696 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2697 return EINVAL; 2698 error = copyin(ireq->i_data, &tmpaddr, 2699 IEEE80211_ADDR_LEN); 2700 if (error == 0) 2701 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2702 break; 2703 case IEEE80211_MESH_RTCMD_DELETE: 2704 ieee80211_mesh_rt_del(vap, ireq->i_data); 2705 break; 2706 default: 2707 return ENOSYS; 2708 } 2709 break; 2710 case IEEE80211_IOC_MESH_PR_METRIC: 2711 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2712 if (error == 0) { 2713 error = mesh_select_proto_metric(vap, tmpproto); 2714 if (error == 0) 2715 error = ENETRESET; 2716 } 2717 break; 2718 case IEEE80211_IOC_MESH_PR_PATH: 2719 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2720 if (error == 0) { 2721 error = mesh_select_proto_path(vap, tmpproto); 2722 if (error == 0) 2723 error = ENETRESET; 2724 } 2725 break; 2726 default: 2727 return ENOSYS; 2728 } 2729 return error; 2730 } 2731 IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2732