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 #define N(a) (sizeof(a) / sizeof(a[0])) 320 int 321 ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 322 { 323 int i, firstempty = -1; 324 325 for (i = 0; i < N(mesh_proto_paths); i++) { 326 if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 327 IEEE80211_MESH_PROTO_DSZ) == 0) 328 return EEXIST; 329 if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 330 firstempty = i; 331 } 332 if (firstempty < 0) 333 return ENOSPC; 334 memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 335 mesh_proto_paths[firstempty].mpp_active = 1; 336 return 0; 337 } 338 339 int 340 ieee80211_mesh_register_proto_metric(const struct 341 ieee80211_mesh_proto_metric *mpm) 342 { 343 int i, firstempty = -1; 344 345 for (i = 0; i < N(mesh_proto_metrics); i++) { 346 if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 347 IEEE80211_MESH_PROTO_DSZ) == 0) 348 return EEXIST; 349 if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 350 firstempty = i; 351 } 352 if (firstempty < 0) 353 return ENOSPC; 354 memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 355 mesh_proto_metrics[firstempty].mpm_active = 1; 356 return 0; 357 } 358 359 static int 360 mesh_select_proto_path(struct ieee80211vap *vap, const char *name) 361 { 362 struct ieee80211_mesh_state *ms = vap->iv_mesh; 363 int i; 364 365 for (i = 0; i < N(mesh_proto_paths); i++) { 366 if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 367 ms->ms_ppath = &mesh_proto_paths[i]; 368 return 0; 369 } 370 } 371 return ENOENT; 372 } 373 374 static int 375 mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 376 { 377 struct ieee80211_mesh_state *ms = vap->iv_mesh; 378 int i; 379 380 for (i = 0; i < N(mesh_proto_metrics); i++) { 381 if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 382 ms->ms_pmetric = &mesh_proto_metrics[i]; 383 return 0; 384 } 385 } 386 return ENOENT; 387 } 388 #undef N 389 390 static void 391 ieee80211_mesh_init(void) 392 { 393 394 memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 395 memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 396 397 /* 398 * Setup mesh parameters that depends on the clock frequency. 399 */ 400 ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 401 ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 402 ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 403 404 /* 405 * Register action frame handlers. 406 */ 407 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 408 IEEE80211_ACTION_MESHPEERING_OPEN, 409 mesh_recv_action_meshpeering_open); 410 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 411 IEEE80211_ACTION_MESHPEERING_CONFIRM, 412 mesh_recv_action_meshpeering_confirm); 413 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 414 IEEE80211_ACTION_MESHPEERING_CLOSE, 415 mesh_recv_action_meshpeering_close); 416 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 417 IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); 418 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 419 IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); 420 421 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 422 IEEE80211_ACTION_MESHPEERING_OPEN, 423 mesh_send_action_meshpeering_open); 424 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 425 IEEE80211_ACTION_MESHPEERING_CONFIRM, 426 mesh_send_action_meshpeering_confirm); 427 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING, 428 IEEE80211_ACTION_MESHPEERING_CLOSE, 429 mesh_send_action_meshpeering_close); 430 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 431 IEEE80211_ACTION_MESHLMETRIC_REQ, 432 mesh_send_action_meshlink_request); 433 ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, 434 IEEE80211_ACTION_MESHLMETRIC_REP, 435 mesh_send_action_meshlink_reply); 436 437 /* 438 * Register Airtime Link Metric. 439 */ 440 ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 441 442 } 443 SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 444 445 void 446 ieee80211_mesh_attach(struct ieee80211com *ic) 447 { 448 ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 449 } 450 451 void 452 ieee80211_mesh_detach(struct ieee80211com *ic) 453 { 454 } 455 456 static void 457 mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 458 { 459 struct ieee80211com *ic = ni->ni_ic; 460 uint16_t args[3]; 461 462 if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 463 args[0] = ni->ni_mlpid; 464 args[1] = ni->ni_mllid; 465 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 466 ieee80211_send_action(ni, 467 IEEE80211_ACTION_CAT_MESHPEERING, 468 IEEE80211_ACTION_MESHPEERING_CLOSE, 469 args); 470 } 471 callout_stop(&ni->ni_mltimer); 472 /* XXX belongs in hwmp */ 473 ieee80211_ageq_drain_node(&ic->ic_stageq, 474 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 475 } 476 477 static void 478 mesh_vdetach(struct ieee80211vap *vap) 479 { 480 struct ieee80211_mesh_state *ms = vap->iv_mesh; 481 482 callout_stop(&ms->ms_cleantimer); 483 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 484 NULL); 485 ieee80211_mesh_rt_flush(vap); 486 ms->ms_ppath->mpp_vdetach(vap); 487 kfree(vap->iv_mesh, M_80211_VAP); 488 vap->iv_mesh = NULL; 489 } 490 491 static void 492 mesh_vattach(struct ieee80211vap *vap) 493 { 494 struct ieee80211_mesh_state *ms; 495 vap->iv_newstate = mesh_newstate; 496 vap->iv_input = mesh_input; 497 vap->iv_opdetach = mesh_vdetach; 498 vap->iv_recv_mgmt = mesh_recv_mgmt; 499 ms = kmalloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 500 M_INTWAIT | M_ZERO); 501 if (ms == NULL) { 502 kprintf("%s: couldn't alloc MBSS state\n", __func__); 503 return; 504 } 505 vap->iv_mesh = ms; 506 ms->ms_seq = 0; 507 ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 508 ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 509 TAILQ_INIT(&ms->ms_routes); 510 callout_init_mp(&ms->ms_cleantimer); 511 mesh_select_proto_metric(vap, "AIRTIME"); 512 KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 513 mesh_select_proto_path(vap, "HWMP"); 514 KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 515 ms->ms_ppath->mpp_vattach(vap); 516 } 517 518 /* 519 * IEEE80211_M_MBSS vap state machine handler. 520 */ 521 static int 522 mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 523 { 524 struct ieee80211_mesh_state *ms = vap->iv_mesh; 525 struct ieee80211com *ic = vap->iv_ic; 526 struct ieee80211_node *ni; 527 enum ieee80211_state ostate; 528 529 ostate = vap->iv_state; 530 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 531 __func__, ieee80211_state_name[ostate], 532 ieee80211_state_name[nstate], arg); 533 vap->iv_state = nstate; /* state transition */ 534 if (ostate != IEEE80211_S_SCAN) 535 ieee80211_cancel_scan(vap); /* background scan */ 536 ni = vap->iv_bss; /* NB: no reference held */ 537 if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) 538 callout_stop(&ms->ms_cleantimer); 539 switch (nstate) { 540 case IEEE80211_S_INIT: 541 switch (ostate) { 542 case IEEE80211_S_SCAN: 543 ieee80211_cancel_scan(vap); 544 break; 545 case IEEE80211_S_CAC: 546 ieee80211_dfs_cac_stop(vap); 547 break; 548 case IEEE80211_S_RUN: 549 ieee80211_iterate_nodes(&ic->ic_sta, 550 mesh_vdetach_peers, NULL); 551 break; 552 default: 553 break; 554 } 555 if (ostate != IEEE80211_S_INIT) { 556 /* NB: optimize INIT -> INIT case */ 557 ieee80211_reset_bss(vap); 558 ieee80211_mesh_rt_flush(vap); 559 } 560 break; 561 case IEEE80211_S_SCAN: 562 switch (ostate) { 563 case IEEE80211_S_INIT: 564 if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 565 !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 566 ms->ms_idlen != 0) { 567 /* 568 * Already have a channel and a mesh ID; bypass 569 * the scan and startup immediately. 570 */ 571 ieee80211_create_ibss(vap, vap->iv_des_chan); 572 break; 573 } 574 /* 575 * Initiate a scan. We can come here as a result 576 * of an IEEE80211_IOC_SCAN_REQ too in which case 577 * the vap will be marked with IEEE80211_FEXT_SCANREQ 578 * and the scan request parameters will be present 579 * in iv_scanreq. Otherwise we do the default. 580 */ 581 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 582 ieee80211_check_scan(vap, 583 vap->iv_scanreq_flags, 584 vap->iv_scanreq_duration, 585 vap->iv_scanreq_mindwell, 586 vap->iv_scanreq_maxdwell, 587 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 588 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 589 } else 590 ieee80211_check_scan_current(vap); 591 break; 592 default: 593 break; 594 } 595 break; 596 case IEEE80211_S_CAC: 597 /* 598 * Start CAC on a DFS channel. We come here when starting 599 * a bss on a DFS channel (see ieee80211_create_ibss). 600 */ 601 ieee80211_dfs_cac_start(vap); 602 break; 603 case IEEE80211_S_RUN: 604 switch (ostate) { 605 case IEEE80211_S_INIT: 606 /* 607 * Already have a channel; bypass the 608 * scan and startup immediately. 609 * Note that ieee80211_create_ibss will call 610 * back to do a RUN->RUN state change. 611 */ 612 ieee80211_create_ibss(vap, 613 ieee80211_ht_adjust_channel(ic, 614 ic->ic_curchan, vap->iv_flags_ht)); 615 /* NB: iv_bss is changed on return */ 616 break; 617 case IEEE80211_S_CAC: 618 /* 619 * NB: This is the normal state change when CAC 620 * expires and no radar was detected; no need to 621 * clear the CAC timer as it's already expired. 622 */ 623 /* fall thru... */ 624 case IEEE80211_S_CSA: 625 #if 0 626 /* 627 * Shorten inactivity timer of associated stations 628 * to weed out sta's that don't follow a CSA. 629 */ 630 ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 631 #endif 632 /* 633 * Update bss node channel to reflect where 634 * we landed after CSA. 635 */ 636 ieee80211_node_set_chan(vap->iv_bss, 637 ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 638 ieee80211_htchanflags(vap->iv_bss->ni_chan))); 639 /* XXX bypass debug msgs */ 640 break; 641 case IEEE80211_S_SCAN: 642 case IEEE80211_S_RUN: 643 #ifdef IEEE80211_DEBUG 644 if (ieee80211_msg_debug(vap)) { 645 struct ieee80211_node *ni = vap->iv_bss; 646 ieee80211_note(vap, 647 "synchronized with %6D meshid ", 648 ni->ni_meshid, ":"); 649 ieee80211_print_essid(ni->ni_meshid, 650 ni->ni_meshidlen); 651 /* XXX MCS/HT */ 652 kprintf(" channel %d\n", 653 ieee80211_chan2ieee(ic, ic->ic_curchan)); 654 } 655 #endif 656 break; 657 default: 658 break; 659 } 660 ieee80211_node_authorize(vap->iv_bss); 661 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 662 mesh_rt_cleanup_callout, vap); 663 break; 664 default: 665 break; 666 } 667 /* NB: ostate not nstate */ 668 ms->ms_ppath->mpp_newstate(vap, ostate, arg); 669 return 0; 670 } 671 672 static void 673 mesh_rt_cleanup_callout(void *arg) 674 { 675 struct ieee80211vap *vap = arg; 676 struct ieee80211_mesh_state *ms = vap->iv_mesh; 677 678 wlan_serialize_enter(); 679 mesh_rt_flush_invalid(vap); 680 callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 681 mesh_rt_cleanup_callout, vap); 682 wlan_serialize_exit(); 683 } 684 685 686 /* 687 * Helper function to note the Mesh Peer Link FSM change. 688 */ 689 static void 690 mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 691 { 692 struct ieee80211vap *vap = ni->ni_vap; 693 struct ieee80211_mesh_state *ms = vap->iv_mesh; 694 #ifdef IEEE80211_DEBUG 695 static const char *meshlinkstates[] = { 696 [IEEE80211_NODE_MESH_IDLE] = "IDLE", 697 [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 698 [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 699 [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 700 [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 701 [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 702 }; 703 #endif 704 IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 705 ni, "peer link: %s -> %s", 706 meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 707 708 /* track neighbor count */ 709 if (state == IEEE80211_NODE_MESH_ESTABLISHED && 710 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 711 KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 712 ms->ms_neighbors++; 713 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 714 } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 715 state != IEEE80211_NODE_MESH_ESTABLISHED) { 716 KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 717 ms->ms_neighbors--; 718 ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 719 } 720 ni->ni_mlstate = state; 721 switch (state) { 722 case IEEE80211_NODE_MESH_HOLDING: 723 ms->ms_ppath->mpp_peerdown(ni); 724 break; 725 case IEEE80211_NODE_MESH_ESTABLISHED: 726 ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 727 break; 728 default: 729 break; 730 } 731 } 732 733 /* 734 * Helper function to generate a unique local ID required for mesh 735 * peer establishment. 736 */ 737 static void 738 mesh_checkid(void *arg, struct ieee80211_node *ni) 739 { 740 uint16_t *r = arg; 741 742 if (*r == ni->ni_mllid) 743 *(uint16_t *)arg = 0; 744 } 745 746 static uint32_t 747 mesh_generateid(struct ieee80211vap *vap) 748 { 749 int maxiter = 4; 750 uint16_t r; 751 752 do { 753 get_random_bytes(&r, 2); 754 ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 755 maxiter--; 756 } while (r == 0 && maxiter > 0); 757 return r; 758 } 759 760 /* 761 * Verifies if we already received this packet by checking its 762 * sequence number. 763 * Returns 0 if the frame is to be accepted, 1 otherwise. 764 */ 765 static int 766 mesh_checkpseq(struct ieee80211vap *vap, 767 const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 768 { 769 struct ieee80211_mesh_route *rt; 770 771 rt = ieee80211_mesh_rt_find(vap, source); 772 if (rt == NULL) { 773 rt = ieee80211_mesh_rt_add(vap, source); 774 if (rt == NULL) { 775 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 776 "%s", "add mcast route failed"); 777 vap->iv_stats.is_mesh_rtaddfailed++; 778 return 1; 779 } 780 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 781 "add mcast route, mesh seqno %d", seq); 782 rt->rt_lastmseq = seq; 783 return 0; 784 } 785 if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 786 return 1; 787 } else { 788 rt->rt_lastmseq = seq; 789 return 0; 790 } 791 } 792 793 /* 794 * Iterate the routing table and locate the next hop. 795 */ 796 static struct ieee80211_node * 797 mesh_find_txnode(struct ieee80211vap *vap, 798 const uint8_t dest[IEEE80211_ADDR_LEN]) 799 { 800 struct ieee80211_mesh_route *rt; 801 802 rt = ieee80211_mesh_rt_find(vap, dest); 803 if (rt == NULL) 804 return NULL; 805 if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 || 806 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) { 807 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 808 "%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags); 809 /* XXX stat */ 810 return NULL; 811 } 812 return ieee80211_find_txnode(vap, rt->rt_nexthop); 813 } 814 815 /* 816 * Forward the specified frame. 817 * Decrement the TTL and set TA to our MAC address. 818 */ 819 static void 820 mesh_forward(struct ieee80211vap *vap, struct mbuf *m, 821 const struct ieee80211_meshcntl *mc) 822 { 823 struct ieee80211com *ic = vap->iv_ic; 824 struct ieee80211_mesh_state *ms = vap->iv_mesh; 825 struct ifnet *ifp = vap->iv_ifp; 826 struct ifnet *parent = ic->ic_ifp; 827 const struct ieee80211_frame *wh = 828 mtod(m, const struct ieee80211_frame *); 829 struct mbuf *mcopy; 830 struct ieee80211_meshcntl *mccopy; 831 struct ieee80211_frame *whcopy; 832 struct ieee80211_node *ni; 833 int err; 834 835 if (mc->mc_ttl == 0) { 836 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 837 "%s", "frame not fwd'd, ttl 0"); 838 vap->iv_stats.is_mesh_fwd_ttl++; 839 return; 840 } 841 if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 842 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 843 "%s", "frame not fwd'd, fwding disabled"); 844 vap->iv_stats.is_mesh_fwd_disabled++; 845 return; 846 } 847 mcopy = m_dup(m, MB_DONTWAIT); 848 if (mcopy == NULL) { 849 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 850 "%s", "frame not fwd'd, cannot dup"); 851 vap->iv_stats.is_mesh_fwd_nobuf++; 852 ifp->if_oerrors++; 853 return; 854 } 855 mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 856 sizeof(struct ieee80211_meshcntl)); 857 if (mcopy == NULL) { 858 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 859 "%s", "frame not fwd'd, too short"); 860 vap->iv_stats.is_mesh_fwd_tooshort++; 861 ifp->if_oerrors++; 862 m_freem(mcopy); 863 return; 864 } 865 whcopy = mtod(mcopy, struct ieee80211_frame *); 866 mccopy = (struct ieee80211_meshcntl *) 867 (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 868 /* XXX clear other bits? */ 869 whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 870 IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 871 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 872 ni = ieee80211_ref_node(vap->iv_bss); 873 mcopy->m_flags |= M_MCAST; 874 } else { 875 ni = mesh_find_txnode(vap, whcopy->i_addr3); 876 if (ni == NULL) { 877 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 878 "%s", "frame not fwd'd, no path"); 879 vap->iv_stats.is_mesh_fwd_nopath++; 880 m_freem(mcopy); 881 return; 882 } 883 IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 884 } 885 KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 886 mccopy->mc_ttl--; 887 888 /* XXX calculate priority so drivers can find the tx queue */ 889 M_WME_SETAC(mcopy, WME_AC_BE); 890 891 /* XXX do we know m_nextpkt is NULL? */ 892 mcopy->m_pkthdr.rcvif = (void *) ni; 893 err = ieee80211_handoff(parent, mcopy); 894 if (err != 0) { 895 /* NB: IFQ_HANDOFF reclaims mbuf */ 896 ieee80211_free_node(ni); 897 } else { 898 ifp->if_opackets++; 899 } 900 } 901 902 static struct mbuf * 903 mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 904 { 905 #define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 906 uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 907 sizeof(struct ieee80211_meshcntl_ae11)]; 908 const struct ieee80211_qosframe_addr4 *wh; 909 const struct ieee80211_meshcntl_ae10 *mc; 910 struct ether_header *eh; 911 struct llc *llc; 912 int ae; 913 914 if (m->m_len < hdrlen + sizeof(*llc) && 915 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 916 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 917 "discard data frame: %s", "m_pullup failed"); 918 vap->iv_stats.is_rx_tooshort++; 919 return NULL; 920 } 921 memcpy(b, mtod(m, caddr_t), hdrlen); 922 wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 923 mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 924 KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 925 WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 926 ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 927 928 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 929 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 930 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 931 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 932 /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 933 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 934 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 935 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 936 llc = NULL; 937 } else { 938 m_adj(m, hdrlen - sizeof(*eh)); 939 } 940 eh = mtod(m, struct ether_header *); 941 ae = mc->mc_flags & 3; 942 if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 943 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 944 if (ae == 0) { 945 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 946 } else if (ae == 1) { 947 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4); 948 } else { 949 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 950 (const struct ieee80211_frame *)wh, NULL, 951 "bad AE %d", ae); 952 vap->iv_stats.is_mesh_badae++; 953 m_freem(m); 954 return NULL; 955 } 956 } else { 957 if (ae == 0) { 958 IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 959 IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 960 } else if (ae == 2) { 961 IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4); 962 IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5); 963 } else { 964 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 965 (const struct ieee80211_frame *)wh, NULL, 966 "bad AE %d", ae); 967 vap->iv_stats.is_mesh_badae++; 968 m_freem(m); 969 return NULL; 970 } 971 } 972 #ifdef ALIGNED_POINTER 973 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 974 m = ieee80211_realign(vap, m, sizeof(*eh)); 975 if (m == NULL) 976 return NULL; 977 } 978 #endif /* ALIGNED_POINTER */ 979 if (llc != NULL) { 980 eh = mtod(m, struct ether_header *); 981 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 982 } 983 return m; 984 #undef WDIR 985 } 986 987 /* 988 * Return non-zero if the unicast mesh data frame should be processed 989 * locally. Frames that are not proxy'd have our address, otherwise 990 * we need to consult the routing table to look for a proxy entry. 991 */ 992 static __inline int 993 mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 994 const struct ieee80211_meshcntl *mc) 995 { 996 int ae = mc->mc_flags & 3; 997 998 KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 999 ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1000 KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae)); 1001 if (ae == 2) { /* ucast w/ proxy */ 1002 const struct ieee80211_meshcntl_ae10 *mc10 = 1003 (const struct ieee80211_meshcntl_ae10 *) mc; 1004 struct ieee80211_mesh_route *rt = 1005 ieee80211_mesh_rt_find(vap, mc10->mc_addr4); 1006 /* check for proxy route to ourself */ 1007 return (rt != NULL && 1008 (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1009 } else /* ucast w/o proxy */ 1010 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1011 } 1012 1013 static int 1014 mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1015 { 1016 #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 1017 #define HAS_SEQ(type) ((type & 0x4) == 0) 1018 struct ieee80211vap *vap = ni->ni_vap; 1019 struct ieee80211com *ic = ni->ni_ic; 1020 struct ifnet *ifp = vap->iv_ifp; 1021 struct ieee80211_frame *wh; 1022 const struct ieee80211_meshcntl *mc; 1023 int hdrspace, meshdrlen, need_tap; 1024 uint8_t dir, type, subtype, qos; 1025 uint32_t seq; 1026 uint8_t *addr; 1027 ieee80211_seq rxseq; 1028 1029 KASSERT(ni != NULL, ("null node")); 1030 ni->ni_inact = ni->ni_inact_reload; 1031 1032 need_tap = 1; /* mbuf need to be tapped. */ 1033 type = -1; /* undefined */ 1034 1035 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1036 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1037 ni->ni_macaddr, NULL, 1038 "too short (1): len %u", m->m_pkthdr.len); 1039 vap->iv_stats.is_rx_tooshort++; 1040 goto out; 1041 } 1042 /* 1043 * Bit of a cheat here, we use a pointer for a 3-address 1044 * frame format but don't reference fields past outside 1045 * ieee80211_frame_min w/o first validating the data is 1046 * present. 1047 */ 1048 wh = mtod(m, struct ieee80211_frame *); 1049 1050 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1051 IEEE80211_FC0_VERSION_0) { 1052 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1053 ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1054 vap->iv_stats.is_rx_badversion++; 1055 goto err; 1056 } 1057 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1058 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1059 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1060 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1061 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1062 ni->ni_noise = nf; 1063 if (HAS_SEQ(type)) { 1064 uint8_t tid = ieee80211_gettid(wh); 1065 1066 if (IEEE80211_QOS_HAS_SEQ(wh) && 1067 TID_TO_WME_AC(tid) >= WME_AC_VI) 1068 ic->ic_wme.wme_hipri_traffic++; 1069 rxseq = le16toh(*(uint16_t *)wh->i_seq); 1070 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 1071 (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 1072 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 1073 /* duplicate, discard */ 1074 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1075 wh->i_addr1, "duplicate", 1076 "seqno <%u,%u> fragno <%u,%u> tid %u", 1077 rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1078 ni->ni_rxseqs[tid] >> 1079 IEEE80211_SEQ_SEQ_SHIFT, 1080 rxseq & IEEE80211_SEQ_FRAG_MASK, 1081 ni->ni_rxseqs[tid] & 1082 IEEE80211_SEQ_FRAG_MASK, 1083 tid); 1084 vap->iv_stats.is_rx_dup++; 1085 IEEE80211_NODE_STAT(ni, rx_dup); 1086 goto out; 1087 } 1088 ni->ni_rxseqs[tid] = rxseq; 1089 } 1090 } 1091 #ifdef IEEE80211_DEBUG 1092 /* 1093 * It's easier, but too expensive, to simulate different mesh 1094 * topologies by consulting the ACL policy very early, so do this 1095 * only under DEBUG. 1096 * 1097 * NB: this check is also done upon peering link initiation. 1098 */ 1099 if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1100 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1101 wh, NULL, "%s", "disallowed by ACL"); 1102 vap->iv_stats.is_rx_acl++; 1103 goto out; 1104 } 1105 #endif 1106 switch (type) { 1107 case IEEE80211_FC0_TYPE_DATA: 1108 if (ni == vap->iv_bss) 1109 goto out; 1110 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1111 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1112 ni->ni_macaddr, NULL, 1113 "peer link not yet established (%d)", 1114 ni->ni_mlstate); 1115 vap->iv_stats.is_mesh_nolink++; 1116 goto out; 1117 } 1118 if (dir != IEEE80211_FC1_DIR_FROMDS && 1119 dir != IEEE80211_FC1_DIR_DSTODS) { 1120 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1121 wh, "data", "incorrect dir 0x%x", dir); 1122 vap->iv_stats.is_rx_wrongdir++; 1123 goto err; 1124 } 1125 /* pull up enough to get to the mesh control */ 1126 hdrspace = ieee80211_hdrspace(ic, wh); 1127 if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1128 (m = m_pullup(m, hdrspace + 1129 sizeof(struct ieee80211_meshcntl))) == NULL) { 1130 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1131 ni->ni_macaddr, NULL, 1132 "data too short: expecting %u", hdrspace); 1133 vap->iv_stats.is_rx_tooshort++; 1134 goto out; /* XXX */ 1135 } 1136 /* 1137 * Now calculate the full extent of the headers. Note 1138 * mesh_decap will pull up anything we didn't get 1139 * above when it strips the 802.11 headers. 1140 */ 1141 mc = (const struct ieee80211_meshcntl *) 1142 (mtod(m, const uint8_t *) + hdrspace); 1143 meshdrlen = sizeof(struct ieee80211_meshcntl) + 1144 (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; 1145 hdrspace += meshdrlen; 1146 seq = LE_READ_4(mc->mc_seq); 1147 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1148 addr = wh->i_addr3; 1149 else 1150 addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1151 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1152 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1153 addr, "data", "%s", "not to me"); 1154 vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1155 goto out; 1156 } 1157 if (mesh_checkpseq(vap, addr, seq) != 0) { 1158 vap->iv_stats.is_rx_dup++; 1159 goto out; 1160 } 1161 1162 /* 1163 * Potentially forward packet. See table s36 (p140) 1164 * for the rules. XXX tap fwd'd packets not for us? 1165 */ 1166 if (dir == IEEE80211_FC1_DIR_FROMDS || 1167 !mesh_isucastforme(vap, wh, mc)) { 1168 mesh_forward(vap, m, mc); 1169 if (dir == IEEE80211_FC1_DIR_DSTODS) 1170 goto out; 1171 /* NB: fall thru to deliver mcast frames locally */ 1172 } 1173 1174 /* 1175 * Save QoS bits for use below--before we strip the header. 1176 */ 1177 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 1178 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 1179 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 1180 ((struct ieee80211_qosframe *)wh)->i_qos[0]; 1181 } else 1182 qos = 0; 1183 /* 1184 * Next up, any fragmentation. 1185 */ 1186 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1187 m = ieee80211_defrag(ni, m, hdrspace); 1188 if (m == NULL) { 1189 /* Fragment dropped or frame not complete yet */ 1190 goto out; 1191 } 1192 } 1193 wh = NULL; /* no longer valid, catch any uses */ 1194 1195 if (ieee80211_radiotap_active_vap(vap)) 1196 ieee80211_radiotap_rx(vap, m); 1197 need_tap = 0; 1198 1199 /* 1200 * Finally, strip the 802.11 header. 1201 */ 1202 m = mesh_decap(vap, m, hdrspace, meshdrlen); 1203 if (m == NULL) { 1204 /* XXX mask bit to check for both */ 1205 /* don't count Null data frames as errors */ 1206 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1207 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1208 goto out; 1209 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1210 ni->ni_macaddr, "data", "%s", "decap error"); 1211 vap->iv_stats.is_rx_decap++; 1212 IEEE80211_NODE_STAT(ni, rx_decap); 1213 goto err; 1214 } 1215 if (qos & IEEE80211_QOS_AMSDU) { 1216 m = ieee80211_decap_amsdu(ni, m); 1217 if (m == NULL) 1218 return IEEE80211_FC0_TYPE_DATA; 1219 } 1220 ieee80211_deliver_data(vap, ni, m); 1221 return type; 1222 case IEEE80211_FC0_TYPE_MGT: 1223 vap->iv_stats.is_rx_mgmt++; 1224 IEEE80211_NODE_STAT(ni, rx_mgmt); 1225 if (dir != IEEE80211_FC1_DIR_NODS) { 1226 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1227 wh, "mgt", "incorrect dir 0x%x", dir); 1228 vap->iv_stats.is_rx_wrongdir++; 1229 goto err; 1230 } 1231 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1232 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1233 ni->ni_macaddr, "mgt", "too short: len %u", 1234 m->m_pkthdr.len); 1235 vap->iv_stats.is_rx_tooshort++; 1236 goto out; 1237 } 1238 #ifdef IEEE80211_DEBUG 1239 if ((ieee80211_msg_debug(vap) && 1240 (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1241 ieee80211_msg_dumppkts(vap)) { 1242 if_printf(ifp, "received %s from %6D rssi %d\n", 1243 ieee80211_mgt_subtype_name[subtype >> 1244 IEEE80211_FC0_SUBTYPE_SHIFT], 1245 wh->i_addr2, ":", rssi); 1246 } 1247 #endif 1248 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1249 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1250 wh, NULL, "%s", "WEP set but not permitted"); 1251 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1252 goto out; 1253 } 1254 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1255 goto out; 1256 case IEEE80211_FC0_TYPE_CTL: 1257 vap->iv_stats.is_rx_ctl++; 1258 IEEE80211_NODE_STAT(ni, rx_ctrl); 1259 goto out; 1260 default: 1261 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1262 wh, "bad", "frame type 0x%x", type); 1263 /* should not come here */ 1264 break; 1265 } 1266 err: 1267 ifp->if_ierrors++; 1268 out: 1269 if (m != NULL) { 1270 if (need_tap && ieee80211_radiotap_active_vap(vap)) 1271 ieee80211_radiotap_rx(vap, m); 1272 m_freem(m); 1273 } 1274 return type; 1275 } 1276 1277 static void 1278 mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1279 int rssi, int nf) 1280 { 1281 struct ieee80211vap *vap = ni->ni_vap; 1282 struct ieee80211_mesh_state *ms = vap->iv_mesh; 1283 struct ieee80211com *ic = ni->ni_ic; 1284 struct ieee80211_frame *wh; 1285 uint8_t *frm, *efrm; 1286 1287 wh = mtod(m0, struct ieee80211_frame *); 1288 frm = (uint8_t *)&wh[1]; 1289 efrm = mtod(m0, uint8_t *) + m0->m_len; 1290 switch (subtype) { 1291 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1292 case IEEE80211_FC0_SUBTYPE_BEACON: 1293 { 1294 struct ieee80211_scanparams scan; 1295 /* 1296 * We process beacon/probe response 1297 * frames to discover neighbors. 1298 */ 1299 if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1300 return; 1301 /* 1302 * Count frame now that we know it's to be processed. 1303 */ 1304 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1305 vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1306 IEEE80211_NODE_STAT(ni, rx_beacons); 1307 } else 1308 IEEE80211_NODE_STAT(ni, rx_proberesp); 1309 /* 1310 * If scanning, just pass information to the scan module. 1311 */ 1312 if (ic->ic_flags & IEEE80211_F_SCAN) { 1313 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1314 /* 1315 * Actively scanning a channel marked passive; 1316 * send a probe request now that we know there 1317 * is 802.11 traffic present. 1318 * 1319 * XXX check if the beacon we recv'd gives 1320 * us what we need and suppress the probe req 1321 */ 1322 ieee80211_probe_curchan(vap, 1); 1323 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1324 } 1325 ieee80211_add_scan(vap, &scan, wh, 1326 subtype, rssi, nf); 1327 return; 1328 } 1329 1330 /* The rest of this code assumes we are running */ 1331 if (vap->iv_state != IEEE80211_S_RUN) 1332 return; 1333 /* 1334 * Ignore non-mesh STAs. 1335 */ 1336 if ((scan.capinfo & 1337 (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1338 scan.meshid == NULL || scan.meshconf == NULL) { 1339 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1340 wh, "beacon", "%s", "not a mesh sta"); 1341 vap->iv_stats.is_mesh_wrongmesh++; 1342 return; 1343 } 1344 /* 1345 * Ignore STAs for other mesh networks. 1346 */ 1347 if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1348 mesh_verify_meshconf(vap, scan.meshconf)) { 1349 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1350 wh, "beacon", "%s", "not for our mesh"); 1351 vap->iv_stats.is_mesh_wrongmesh++; 1352 return; 1353 } 1354 /* 1355 * Peer only based on the current ACL policy. 1356 */ 1357 if (vap->iv_acl != NULL && 1358 !vap->iv_acl->iac_check(vap, wh->i_addr2)) { 1359 IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1360 wh, NULL, "%s", "disallowed by ACL"); 1361 vap->iv_stats.is_rx_acl++; 1362 return; 1363 } 1364 /* 1365 * Do neighbor discovery. 1366 */ 1367 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 1368 /* 1369 * Create a new entry in the neighbor table. 1370 */ 1371 ni = ieee80211_add_neighbor(vap, wh, &scan); 1372 } 1373 /* 1374 * Automatically peer with discovered nodes if possible. 1375 * XXX backoff on repeated failure 1376 */ 1377 if (ni != vap->iv_bss && 1378 (ms->ms_flags & IEEE80211_MESHFLAGS_AP) && 1379 ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) { 1380 uint16_t args[1]; 1381 1382 ni->ni_mlpid = mesh_generateid(vap); 1383 if (ni->ni_mlpid == 0) 1384 return; 1385 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 1386 args[0] = ni->ni_mlpid; 1387 ieee80211_send_action(ni, 1388 IEEE80211_ACTION_CAT_MESHPEERING, 1389 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1390 ni->ni_mlrcnt = 0; 1391 mesh_peer_timeout_setup(ni); 1392 } 1393 break; 1394 } 1395 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1396 { 1397 uint8_t *ssid, *meshid, *rates, *xrates; 1398 uint8_t *sfrm; 1399 1400 if (vap->iv_state != IEEE80211_S_RUN) { 1401 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1402 wh, NULL, "wrong state %s", 1403 ieee80211_state_name[vap->iv_state]); 1404 vap->iv_stats.is_rx_mgtdiscard++; 1405 return; 1406 } 1407 if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 1408 /* frame must be directed */ 1409 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1410 wh, NULL, "%s", "not unicast"); 1411 vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 1412 return; 1413 } 1414 /* 1415 * prreq frame format 1416 * [tlv] ssid 1417 * [tlv] supported rates 1418 * [tlv] extended supported rates 1419 * [tlv] mesh id 1420 */ 1421 ssid = meshid = rates = xrates = NULL; 1422 sfrm = frm; 1423 while (efrm - frm > 1) { 1424 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1425 switch (*frm) { 1426 case IEEE80211_ELEMID_SSID: 1427 ssid = frm; 1428 break; 1429 case IEEE80211_ELEMID_RATES: 1430 rates = frm; 1431 break; 1432 case IEEE80211_ELEMID_XRATES: 1433 xrates = frm; 1434 break; 1435 case IEEE80211_ELEMID_MESHID: 1436 meshid = frm; 1437 break; 1438 } 1439 frm += frm[2] + 2; 1440 } 1441 IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 1442 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1443 if (xrates != NULL) 1444 IEEE80211_VERIFY_ELEMENT(xrates, 1445 IEEE80211_RATE_MAXSIZE - rates[1], return); 1446 if (meshid != NULL) { 1447 IEEE80211_VERIFY_ELEMENT(meshid, 1448 IEEE80211_MESHID_LEN, return); 1449 /* NB: meshid, not ssid */ 1450 IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 1451 } 1452 1453 /* XXX find a better class or define it's own */ 1454 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 1455 "%s", "recv probe req"); 1456 /* 1457 * Some legacy 11b clients cannot hack a complete 1458 * probe response frame. When the request includes 1459 * only a bare-bones rate set, communicate this to 1460 * the transmit side. 1461 */ 1462 ieee80211_send_proberesp(vap, wh->i_addr2, 0); 1463 break; 1464 } 1465 case IEEE80211_FC0_SUBTYPE_ACTION: 1466 if (vap->iv_state != IEEE80211_S_RUN) { 1467 vap->iv_stats.is_rx_mgtdiscard++; 1468 break; 1469 } 1470 /* 1471 * We received an action for an unknown neighbor. 1472 * XXX: wait for it to beacon or create ieee80211_node? 1473 */ 1474 if (ni == vap->iv_bss) { 1475 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1476 wh, NULL, "%s", "unknown node"); 1477 vap->iv_stats.is_rx_mgtdiscard++; 1478 break; 1479 } 1480 /* 1481 * Discard if not for us. 1482 */ 1483 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1484 !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1485 IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH, 1486 wh, NULL, "%s", "not for me"); 1487 vap->iv_stats.is_rx_mgtdiscard++; 1488 break; 1489 } 1490 /* XXX parse_action is a bit useless now */ 1491 if (ieee80211_parse_action(ni, m0) == 0) 1492 ic->ic_recv_action(ni, wh, frm, efrm); 1493 break; 1494 case IEEE80211_FC0_SUBTYPE_AUTH: 1495 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1496 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1497 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1498 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 1499 case IEEE80211_FC0_SUBTYPE_DEAUTH: 1500 case IEEE80211_FC0_SUBTYPE_DISASSOC: 1501 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1502 wh, NULL, "%s", "not handled"); 1503 vap->iv_stats.is_rx_mgtdiscard++; 1504 return; 1505 default: 1506 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1507 wh, "mgt", "subtype 0x%x not handled", subtype); 1508 vap->iv_stats.is_rx_badsubtype++; 1509 break; 1510 } 1511 } 1512 1513 /* 1514 * Parse meshpeering action ie's for open+confirm frames; the 1515 * important bits are returned in the supplied structure. 1516 */ 1517 static const struct ieee80211_meshpeer_ie * 1518 mesh_parse_meshpeering_action(struct ieee80211_node *ni, 1519 const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 1520 const uint8_t *frm, const uint8_t *efrm, 1521 struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 1522 { 1523 struct ieee80211vap *vap = ni->ni_vap; 1524 const struct ieee80211_meshpeer_ie *mpie; 1525 const uint8_t *meshid, *meshconf, *meshpeer; 1526 1527 meshid = meshconf = meshpeer = NULL; 1528 while (efrm - frm > 1) { 1529 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 1530 switch (*frm) { 1531 case IEEE80211_ELEMID_MESHID: 1532 meshid = frm; 1533 break; 1534 case IEEE80211_ELEMID_MESHCONF: 1535 meshconf = frm; 1536 break; 1537 case IEEE80211_ELEMID_MESHPEER: 1538 meshpeer = frm; 1539 mpie = (const struct ieee80211_meshpeer_ie *) frm; 1540 memset(mp, 0, sizeof(*mp)); 1541 mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 1542 /* NB: peer link ID is optional on these frames */ 1543 if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE && 1544 mpie->peer_len == 8) { 1545 mp->peer_linkid = 0; 1546 mp->peer_rcode = LE_READ_2(&mpie->peer_linkid); 1547 } else { 1548 mp->peer_linkid = LE_READ_2(&mpie->peer_linkid); 1549 mp->peer_rcode = LE_READ_2(&mpie->peer_rcode); 1550 } 1551 break; 1552 } 1553 frm += frm[1] + 2; 1554 } 1555 1556 /* 1557 * Verify the contents of the frame. Action frames with 1558 * close subtype don't have a Mesh Configuration IE. 1559 * If if fails validation, close the peer link. 1560 */ 1561 KASSERT(meshpeer != NULL && 1562 subtype != IEEE80211_ACTION_MESHPEERING_CLOSE, 1563 ("parsing close action")); 1564 1565 if (mesh_verify_meshid(vap, meshid) || 1566 mesh_verify_meshpeer(vap, subtype, meshpeer) || 1567 mesh_verify_meshconf(vap, meshconf)) { 1568 uint16_t args[3]; 1569 1570 IEEE80211_DISCARD(vap, 1571 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1572 wh, NULL, "%s", "not for our mesh"); 1573 vap->iv_stats.is_rx_mgtdiscard++; 1574 switch (ni->ni_mlstate) { 1575 case IEEE80211_NODE_MESH_IDLE: 1576 case IEEE80211_NODE_MESH_ESTABLISHED: 1577 case IEEE80211_NODE_MESH_HOLDING: 1578 /* ignore */ 1579 break; 1580 case IEEE80211_NODE_MESH_OPENSNT: 1581 case IEEE80211_NODE_MESH_OPENRCV: 1582 case IEEE80211_NODE_MESH_CONFIRMRCV: 1583 args[0] = ni->ni_mlpid; 1584 args[1] = ni->ni_mllid; 1585 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1586 ieee80211_send_action(ni, 1587 IEEE80211_ACTION_CAT_MESHPEERING, 1588 IEEE80211_ACTION_MESHPEERING_CLOSE, 1589 args); 1590 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1591 mesh_peer_timeout_setup(ni); 1592 break; 1593 } 1594 return NULL; 1595 } 1596 return (const struct ieee80211_meshpeer_ie *) mp; 1597 } 1598 1599 static int 1600 mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 1601 const struct ieee80211_frame *wh, 1602 const uint8_t *frm, const uint8_t *efrm) 1603 { 1604 struct ieee80211vap *vap = ni->ni_vap; 1605 struct ieee80211_meshpeer_ie ie; 1606 const struct ieee80211_meshpeer_ie *meshpeer; 1607 uint16_t args[3]; 1608 1609 /* +2+2 for action + code + capabilites */ 1610 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 1611 IEEE80211_ACTION_MESHPEERING_OPEN); 1612 if (meshpeer == NULL) { 1613 return 0; 1614 } 1615 1616 /* XXX move up */ 1617 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1618 "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 1619 1620 switch (ni->ni_mlstate) { 1621 case IEEE80211_NODE_MESH_IDLE: 1622 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1623 ni->ni_mllid = meshpeer->peer_llinkid; 1624 ni->ni_mlpid = mesh_generateid(vap); 1625 if (ni->ni_mlpid == 0) 1626 return 0; /* XXX */ 1627 args[0] = ni->ni_mlpid; 1628 /* Announce we're open too... */ 1629 ieee80211_send_action(ni, 1630 IEEE80211_ACTION_CAT_MESHPEERING, 1631 IEEE80211_ACTION_MESHPEERING_OPEN, args); 1632 /* ...and confirm the link. */ 1633 args[0] = ni->ni_mlpid; 1634 args[1] = ni->ni_mllid; 1635 ieee80211_send_action(ni, 1636 IEEE80211_ACTION_CAT_MESHPEERING, 1637 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1638 args); 1639 mesh_peer_timeout_setup(ni); 1640 break; 1641 case IEEE80211_NODE_MESH_OPENRCV: 1642 /* Wrong Link ID */ 1643 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1644 args[0] = ni->ni_mllid; 1645 args[1] = ni->ni_mlpid; 1646 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1647 ieee80211_send_action(ni, 1648 IEEE80211_ACTION_CAT_MESHPEERING, 1649 IEEE80211_ACTION_MESHPEERING_CLOSE, 1650 args); 1651 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1652 mesh_peer_timeout_setup(ni); 1653 break; 1654 } 1655 /* Duplicate open, confirm again. */ 1656 args[0] = ni->ni_mlpid; 1657 args[1] = ni->ni_mllid; 1658 ieee80211_send_action(ni, 1659 IEEE80211_ACTION_CAT_MESHPEERING, 1660 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1661 args); 1662 break; 1663 case IEEE80211_NODE_MESH_OPENSNT: 1664 ni->ni_mllid = meshpeer->peer_llinkid; 1665 mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 1666 args[0] = ni->ni_mlpid; 1667 args[1] = ni->ni_mllid; 1668 ieee80211_send_action(ni, 1669 IEEE80211_ACTION_CAT_MESHPEERING, 1670 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1671 args); 1672 /* NB: don't setup/clear any timeout */ 1673 break; 1674 case IEEE80211_NODE_MESH_CONFIRMRCV: 1675 if (ni->ni_mlpid != meshpeer->peer_linkid || 1676 ni->ni_mllid != meshpeer->peer_llinkid) { 1677 args[0] = ni->ni_mlpid; 1678 args[1] = ni->ni_mllid; 1679 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1680 ieee80211_send_action(ni, 1681 IEEE80211_ACTION_CAT_MESHPEERING, 1682 IEEE80211_ACTION_MESHPEERING_CLOSE, 1683 args); 1684 mesh_linkchange(ni, 1685 IEEE80211_NODE_MESH_HOLDING); 1686 mesh_peer_timeout_setup(ni); 1687 break; 1688 } 1689 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1690 ni->ni_mllid = meshpeer->peer_llinkid; 1691 args[0] = ni->ni_mlpid; 1692 args[1] = ni->ni_mllid; 1693 ieee80211_send_action(ni, 1694 IEEE80211_ACTION_CAT_MESHPEERING, 1695 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1696 args); 1697 mesh_peer_timeout_stop(ni); 1698 break; 1699 case IEEE80211_NODE_MESH_ESTABLISHED: 1700 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1701 args[0] = ni->ni_mllid; 1702 args[1] = ni->ni_mlpid; 1703 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1704 ieee80211_send_action(ni, 1705 IEEE80211_ACTION_CAT_MESHPEERING, 1706 IEEE80211_ACTION_MESHPEERING_CLOSE, 1707 args); 1708 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1709 mesh_peer_timeout_setup(ni); 1710 break; 1711 } 1712 args[0] = ni->ni_mlpid; 1713 args[1] = ni->ni_mllid; 1714 ieee80211_send_action(ni, 1715 IEEE80211_ACTION_CAT_MESHPEERING, 1716 IEEE80211_ACTION_MESHPEERING_CONFIRM, 1717 args); 1718 break; 1719 case IEEE80211_NODE_MESH_HOLDING: 1720 args[0] = ni->ni_mlpid; 1721 args[1] = meshpeer->peer_llinkid; 1722 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1723 ieee80211_send_action(ni, 1724 IEEE80211_ACTION_CAT_MESHPEERING, 1725 IEEE80211_ACTION_MESHPEERING_CLOSE, 1726 args); 1727 break; 1728 } 1729 return 0; 1730 } 1731 1732 static int 1733 mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 1734 const struct ieee80211_frame *wh, 1735 const uint8_t *frm, const uint8_t *efrm) 1736 { 1737 struct ieee80211vap *vap = ni->ni_vap; 1738 struct ieee80211_meshpeer_ie ie; 1739 const struct ieee80211_meshpeer_ie *meshpeer; 1740 uint16_t args[3]; 1741 1742 /* +2+2+2+2 for action + code + capabilites + status code + AID */ 1743 meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 1744 IEEE80211_ACTION_MESHPEERING_CONFIRM); 1745 if (meshpeer == NULL) { 1746 return 0; 1747 } 1748 1749 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1750 "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 1751 meshpeer->peer_llinkid, meshpeer->peer_linkid); 1752 1753 switch (ni->ni_mlstate) { 1754 case IEEE80211_NODE_MESH_OPENRCV: 1755 mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 1756 mesh_peer_timeout_stop(ni); 1757 break; 1758 case IEEE80211_NODE_MESH_OPENSNT: 1759 mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 1760 break; 1761 case IEEE80211_NODE_MESH_HOLDING: 1762 args[0] = ni->ni_mlpid; 1763 args[1] = meshpeer->peer_llinkid; 1764 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 1765 ieee80211_send_action(ni, 1766 IEEE80211_ACTION_CAT_MESHPEERING, 1767 IEEE80211_ACTION_MESHPEERING_CLOSE, 1768 args); 1769 break; 1770 case IEEE80211_NODE_MESH_CONFIRMRCV: 1771 if (ni->ni_mllid != meshpeer->peer_llinkid) { 1772 args[0] = ni->ni_mlpid; 1773 args[1] = ni->ni_mllid; 1774 args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 1775 ieee80211_send_action(ni, 1776 IEEE80211_ACTION_CAT_MESHPEERING, 1777 IEEE80211_ACTION_MESHPEERING_CLOSE, 1778 args); 1779 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1780 mesh_peer_timeout_setup(ni); 1781 } 1782 break; 1783 default: 1784 IEEE80211_DISCARD(vap, 1785 IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1786 wh, NULL, "received confirm in invalid state %d", 1787 ni->ni_mlstate); 1788 vap->iv_stats.is_rx_mgtdiscard++; 1789 break; 1790 } 1791 return 0; 1792 } 1793 1794 static int 1795 mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 1796 const struct ieee80211_frame *wh, 1797 const uint8_t *frm, const uint8_t *efrm) 1798 { 1799 uint16_t args[3]; 1800 1801 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 1802 ni, "%s", "recv PEER CLOSE"); 1803 1804 switch (ni->ni_mlstate) { 1805 case IEEE80211_NODE_MESH_IDLE: 1806 /* ignore */ 1807 break; 1808 case IEEE80211_NODE_MESH_OPENRCV: 1809 case IEEE80211_NODE_MESH_OPENSNT: 1810 case IEEE80211_NODE_MESH_CONFIRMRCV: 1811 case IEEE80211_NODE_MESH_ESTABLISHED: 1812 args[0] = ni->ni_mlpid; 1813 args[1] = ni->ni_mllid; 1814 args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 1815 ieee80211_send_action(ni, 1816 IEEE80211_ACTION_CAT_MESHPEERING, 1817 IEEE80211_ACTION_MESHPEERING_CLOSE, 1818 args); 1819 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 1820 mesh_peer_timeout_setup(ni); 1821 break; 1822 case IEEE80211_NODE_MESH_HOLDING: 1823 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 1824 mesh_peer_timeout_setup(ni); 1825 break; 1826 } 1827 return 0; 1828 } 1829 1830 /* 1831 * Link Metric handling. 1832 */ 1833 static int 1834 mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni, 1835 const struct ieee80211_frame *wh, 1836 const uint8_t *frm, const uint8_t *efrm) 1837 { 1838 uint32_t metric; 1839 1840 metric = mesh_airtime_calc(ni); 1841 ieee80211_send_action(ni, 1842 IEEE80211_ACTION_CAT_MESHLMETRIC, 1843 IEEE80211_ACTION_MESHLMETRIC_REP, 1844 &metric); 1845 return 0; 1846 } 1847 1848 static int 1849 mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni, 1850 const struct ieee80211_frame *wh, 1851 const uint8_t *frm, const uint8_t *efrm) 1852 { 1853 return 0; 1854 } 1855 1856 static int 1857 mesh_send_action(struct ieee80211_node *ni, struct mbuf *m) 1858 { 1859 struct ieee80211_bpf_params params; 1860 1861 memset(¶ms, 0, sizeof(params)); 1862 params.ibp_pri = WME_AC_VO; 1863 params.ibp_rate0 = ni->ni_txparms->mgmtrate; 1864 /* XXX ucast/mcast */ 1865 params.ibp_try0 = ni->ni_txparms->maxretry; 1866 params.ibp_power = ni->ni_txpower; 1867 return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION, 1868 ¶ms); 1869 } 1870 1871 #define ADDSHORT(frm, v) do { \ 1872 frm[0] = (v) & 0xff; \ 1873 frm[1] = (v) >> 8; \ 1874 frm += 2; \ 1875 } while (0) 1876 #define ADDWORD(frm, v) do { \ 1877 frm[0] = (v) & 0xff; \ 1878 frm[1] = ((v) >> 8) & 0xff; \ 1879 frm[2] = ((v) >> 16) & 0xff; \ 1880 frm[3] = ((v) >> 24) & 0xff; \ 1881 frm += 4; \ 1882 } while (0) 1883 1884 static int 1885 mesh_send_action_meshpeering_open(struct ieee80211_node *ni, 1886 int category, int action, void *args0) 1887 { 1888 struct ieee80211vap *vap = ni->ni_vap; 1889 struct ieee80211com *ic = ni->ni_ic; 1890 uint16_t *args = args0; 1891 const struct ieee80211_rateset *rs; 1892 struct mbuf *m; 1893 uint8_t *frm; 1894 1895 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1896 "send PEER OPEN action: localid 0x%x", args[0]); 1897 1898 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1899 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 1900 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 1901 ieee80211_ref_node(ni); 1902 1903 m = ieee80211_getmgtframe(&frm, 1904 ic->ic_headroom + sizeof(struct ieee80211_frame), 1905 sizeof(uint16_t) /* action+category */ 1906 + sizeof(uint16_t) /* capabilites */ 1907 + 2 + IEEE80211_RATE_SIZE 1908 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1909 + 2 + IEEE80211_MESHID_LEN 1910 + sizeof(struct ieee80211_meshconf_ie) 1911 + sizeof(struct ieee80211_meshpeer_ie) 1912 ); 1913 if (m != NULL) { 1914 /* 1915 * mesh peer open action frame format: 1916 * [1] category 1917 * [1] action 1918 * [2] capabilities 1919 * [tlv] rates 1920 * [tlv] xrates 1921 * [tlv] mesh id 1922 * [tlv] mesh conf 1923 * [tlv] mesh peer link mgmt 1924 */ 1925 *frm++ = category; 1926 *frm++ = action; 1927 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1928 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1929 frm = ieee80211_add_rates(frm, rs); 1930 frm = ieee80211_add_xrates(frm, rs); 1931 frm = ieee80211_add_meshid(frm, vap); 1932 frm = ieee80211_add_meshconf(frm, vap); 1933 frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN, 1934 args[0], 0, 0); 1935 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 1936 return mesh_send_action(ni, m); 1937 } else { 1938 vap->iv_stats.is_tx_nobuf++; 1939 ieee80211_free_node(ni); 1940 return ENOMEM; 1941 } 1942 } 1943 1944 static int 1945 mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 1946 int category, int action, void *args0) 1947 { 1948 struct ieee80211vap *vap = ni->ni_vap; 1949 struct ieee80211com *ic = ni->ni_ic; 1950 uint16_t *args = args0; 1951 const struct ieee80211_rateset *rs; 1952 struct mbuf *m; 1953 uint8_t *frm; 1954 1955 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 1956 "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 1957 args[0], args[1]); 1958 1959 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1960 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 1961 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 1962 ieee80211_ref_node(ni); 1963 1964 m = ieee80211_getmgtframe(&frm, 1965 ic->ic_headroom + sizeof(struct ieee80211_frame), 1966 sizeof(uint16_t) /* action+category */ 1967 + sizeof(uint16_t) /* capabilites */ 1968 + sizeof(uint16_t) /* status code */ 1969 + sizeof(uint16_t) /* AID */ 1970 + 2 + IEEE80211_RATE_SIZE 1971 + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 1972 + 2 + IEEE80211_MESHID_LEN 1973 + sizeof(struct ieee80211_meshconf_ie) 1974 + sizeof(struct ieee80211_meshpeer_ie) 1975 ); 1976 if (m != NULL) { 1977 /* 1978 * mesh peer confirm action frame format: 1979 * [1] category 1980 * [1] action 1981 * [2] capabilities 1982 * [2] status code 1983 * [2] association id (peer ID) 1984 * [tlv] rates 1985 * [tlv] xrates 1986 * [tlv] mesh id 1987 * [tlv] mesh conf 1988 * [tlv] mesh peer link mgmt 1989 */ 1990 *frm++ = category; 1991 *frm++ = action; 1992 ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 1993 ADDSHORT(frm, 0); /* status code */ 1994 ADDSHORT(frm, args[1]); /* AID */ 1995 rs = ieee80211_get_suprates(ic, ic->ic_curchan); 1996 frm = ieee80211_add_rates(frm, rs); 1997 frm = ieee80211_add_xrates(frm, rs); 1998 frm = ieee80211_add_meshid(frm, vap); 1999 frm = ieee80211_add_meshconf(frm, vap); 2000 frm = ieee80211_add_meshpeer(frm, 2001 IEEE80211_MESH_PEER_LINK_CONFIRM, 2002 args[0], args[1], 0); 2003 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2004 return mesh_send_action(ni, m); 2005 } else { 2006 vap->iv_stats.is_tx_nobuf++; 2007 ieee80211_free_node(ni); 2008 return ENOMEM; 2009 } 2010 } 2011 2012 static int 2013 mesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2014 int category, int action, void *args0) 2015 { 2016 struct ieee80211vap *vap = ni->ni_vap; 2017 struct ieee80211com *ic = ni->ni_ic; 2018 uint16_t *args = args0; 2019 struct mbuf *m; 2020 uint8_t *frm; 2021 2022 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2023 "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2024 args[0], args[1], args[2]); 2025 2026 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2027 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2028 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2029 ieee80211_ref_node(ni); 2030 2031 m = ieee80211_getmgtframe(&frm, 2032 ic->ic_headroom + sizeof(struct ieee80211_frame), 2033 sizeof(uint16_t) /* action+category */ 2034 + sizeof(uint16_t) /* reason code */ 2035 + 2 + IEEE80211_MESHID_LEN 2036 + sizeof(struct ieee80211_meshpeer_ie) 2037 ); 2038 if (m != NULL) { 2039 /* 2040 * mesh peer close action frame format: 2041 * [1] category 2042 * [1] action 2043 * [2] reason code 2044 * [tlv] mesh id 2045 * [tlv] mesh peer link mgmt 2046 */ 2047 *frm++ = category; 2048 *frm++ = action; 2049 ADDSHORT(frm, args[2]); /* reason code */ 2050 frm = ieee80211_add_meshid(frm, vap); 2051 frm = ieee80211_add_meshpeer(frm, 2052 IEEE80211_MESH_PEER_LINK_CLOSE, 2053 args[0], args[1], args[2]); 2054 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2055 return mesh_send_action(ni, m); 2056 } else { 2057 vap->iv_stats.is_tx_nobuf++; 2058 ieee80211_free_node(ni); 2059 return ENOMEM; 2060 } 2061 } 2062 2063 static int 2064 mesh_send_action_meshlink_request(struct ieee80211_node *ni, 2065 int category, int action, void *arg0) 2066 { 2067 struct ieee80211vap *vap = ni->ni_vap; 2068 struct ieee80211com *ic = ni->ni_ic; 2069 struct mbuf *m; 2070 uint8_t *frm; 2071 2072 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2073 "%s", "send LINK METRIC REQUEST action"); 2074 2075 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2076 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2077 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2078 ieee80211_ref_node(ni); 2079 2080 m = ieee80211_getmgtframe(&frm, 2081 ic->ic_headroom + sizeof(struct ieee80211_frame), 2082 sizeof(uint16_t) /* action+category */ 2083 ); 2084 if (m != NULL) { 2085 /* 2086 * mesh link metric request 2087 * [1] category 2088 * [1] action 2089 */ 2090 *frm++ = category; 2091 *frm++ = action; 2092 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2093 return mesh_send_action(ni, m); 2094 } else { 2095 vap->iv_stats.is_tx_nobuf++; 2096 ieee80211_free_node(ni); 2097 return ENOMEM; 2098 } 2099 } 2100 2101 static int 2102 mesh_send_action_meshlink_reply(struct ieee80211_node *ni, 2103 int category, int action, void *args0) 2104 { 2105 struct ieee80211vap *vap = ni->ni_vap; 2106 struct ieee80211com *ic = ni->ni_ic; 2107 uint32_t *metric = args0; 2108 struct mbuf *m; 2109 uint8_t *frm; 2110 2111 IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2112 "send LINK METRIC REPLY action: metric 0x%x", *metric); 2113 2114 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2115 "ieee80211_ref_node (%s:%u) %p<%6D> refcnt %d\n", __func__, __LINE__, 2116 ni, ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)+1); 2117 ieee80211_ref_node(ni); 2118 2119 m = ieee80211_getmgtframe(&frm, 2120 ic->ic_headroom + sizeof(struct ieee80211_frame), 2121 sizeof(uint16_t) /* action+category */ 2122 + sizeof(struct ieee80211_meshlmetric_ie) 2123 ); 2124 if (m != NULL) { 2125 /* 2126 * mesh link metric reply 2127 * [1] category 2128 * [1] action 2129 * [tlv] mesh link metric 2130 */ 2131 *frm++ = category; 2132 *frm++ = action; 2133 frm = ieee80211_add_meshlmetric(frm, *metric); 2134 m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2135 return mesh_send_action(ni, m); 2136 } else { 2137 vap->iv_stats.is_tx_nobuf++; 2138 ieee80211_free_node(ni); 2139 return ENOMEM; 2140 } 2141 } 2142 2143 static void 2144 mesh_peer_timeout_setup(struct ieee80211_node *ni) 2145 { 2146 switch (ni->ni_mlstate) { 2147 case IEEE80211_NODE_MESH_HOLDING: 2148 ni->ni_mltval = ieee80211_mesh_holdingtimeout; 2149 break; 2150 case IEEE80211_NODE_MESH_CONFIRMRCV: 2151 ni->ni_mltval = ieee80211_mesh_confirmtimeout; 2152 break; 2153 case IEEE80211_NODE_MESH_IDLE: 2154 ni->ni_mltval = 0; 2155 break; 2156 default: 2157 ni->ni_mltval = ieee80211_mesh_retrytimeout; 2158 break; 2159 } 2160 if (ni->ni_mltval) { 2161 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2162 mesh_peer_timeout_callout, ni); 2163 } 2164 } 2165 2166 /* 2167 * Same as above but backoffs timer statisically 50%. 2168 */ 2169 static void 2170 mesh_peer_timeout_backoff(struct ieee80211_node *ni) 2171 { 2172 uint32_t r; 2173 2174 r = karc4random(); 2175 ni->ni_mltval += r % ni->ni_mltval; 2176 callout_reset(&ni->ni_mltimer, ni->ni_mltval, 2177 mesh_peer_timeout_callout, ni); 2178 } 2179 2180 static __inline void 2181 mesh_peer_timeout_stop(struct ieee80211_node *ni) 2182 { 2183 callout_stop(&ni->ni_mltimer); 2184 } 2185 2186 /* 2187 * Mesh Peer Link Management FSM timeout handling. 2188 */ 2189 static void 2190 mesh_peer_timeout_callout(void *arg) 2191 { 2192 struct ieee80211_node *ni = (struct ieee80211_node *)arg; 2193 uint16_t args[3]; 2194 2195 wlan_serialize_enter(); 2196 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 2197 ni, "mesh link timeout, state %d, retry counter %d", 2198 ni->ni_mlstate, ni->ni_mlrcnt); 2199 2200 switch (ni->ni_mlstate) { 2201 case IEEE80211_NODE_MESH_IDLE: 2202 case IEEE80211_NODE_MESH_ESTABLISHED: 2203 break; 2204 case IEEE80211_NODE_MESH_OPENSNT: 2205 case IEEE80211_NODE_MESH_OPENRCV: 2206 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2207 args[0] = ni->ni_mlpid; 2208 args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 2209 ieee80211_send_action(ni, 2210 IEEE80211_ACTION_CAT_MESHPEERING, 2211 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2212 ni->ni_mlrcnt = 0; 2213 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2214 mesh_peer_timeout_setup(ni); 2215 } else { 2216 args[0] = ni->ni_mlpid; 2217 ieee80211_send_action(ni, 2218 IEEE80211_ACTION_CAT_MESHPEERING, 2219 IEEE80211_ACTION_MESHPEERING_OPEN, args); 2220 ni->ni_mlrcnt++; 2221 mesh_peer_timeout_backoff(ni); 2222 } 2223 break; 2224 case IEEE80211_NODE_MESH_CONFIRMRCV: 2225 if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 2226 args[0] = ni->ni_mlpid; 2227 args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 2228 ieee80211_send_action(ni, 2229 IEEE80211_ACTION_CAT_MESHPEERING, 2230 IEEE80211_ACTION_MESHPEERING_CLOSE, args); 2231 ni->ni_mlrcnt = 0; 2232 mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2233 mesh_peer_timeout_setup(ni); 2234 } else { 2235 ni->ni_mlrcnt++; 2236 mesh_peer_timeout_setup(ni); 2237 } 2238 break; 2239 case IEEE80211_NODE_MESH_HOLDING: 2240 mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2241 break; 2242 } 2243 wlan_serialize_exit(); 2244 } 2245 2246 static int 2247 mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 2248 { 2249 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2250 2251 if (ie == NULL || ie[1] != ms->ms_idlen) 2252 return 1; 2253 return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 2254 } 2255 2256 /* 2257 * Check if we are using the same algorithms for this mesh. 2258 */ 2259 static int 2260 mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 2261 { 2262 const struct ieee80211_meshconf_ie *meshconf = 2263 (const struct ieee80211_meshconf_ie *) ie; 2264 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2265 uint16_t cap; 2266 2267 if (meshconf == NULL) 2268 return 1; 2269 if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 2270 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2271 "unknown path selection algorithm: 0x%x\n", 2272 meshconf->conf_pselid); 2273 return 1; 2274 } 2275 if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 2276 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2277 "unknown path metric algorithm: 0x%x\n", 2278 meshconf->conf_pmetid); 2279 return 1; 2280 } 2281 if (meshconf->conf_ccid != 0) { 2282 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2283 "unknown congestion control algorithm: 0x%x\n", 2284 meshconf->conf_ccid); 2285 return 1; 2286 } 2287 if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 2288 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2289 "unknown sync algorithm: 0x%x\n", 2290 meshconf->conf_syncid); 2291 return 1; 2292 } 2293 if (meshconf->conf_authid != 0) { 2294 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2295 "unknown auth auth algorithm: 0x%x\n", 2296 meshconf->conf_pselid); 2297 return 1; 2298 } 2299 /* NB: conf_cap is only read correctly here */ 2300 cap = LE_READ_2(&meshconf->conf_cap); 2301 /* Not accepting peers */ 2302 if (!(cap & IEEE80211_MESHCONF_CAP_AP)) { 2303 IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 2304 "not accepting peers: 0x%x\n", meshconf->conf_cap); 2305 return 1; 2306 } 2307 return 0; 2308 } 2309 2310 static int 2311 mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 2312 const uint8_t *ie) 2313 { 2314 const struct ieee80211_meshpeer_ie *meshpeer = 2315 (const struct ieee80211_meshpeer_ie *) ie; 2316 2317 if (meshpeer == NULL || meshpeer->peer_len < 6 || 2318 meshpeer->peer_len > 10) 2319 return 1; 2320 switch (subtype) { 2321 case IEEE80211_MESH_PEER_LINK_OPEN: 2322 if (meshpeer->peer_len != 6) 2323 return 1; 2324 break; 2325 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2326 if (meshpeer->peer_len != 8) 2327 return 1; 2328 break; 2329 case IEEE80211_MESH_PEER_LINK_CLOSE: 2330 if (meshpeer->peer_len < 8) 2331 return 1; 2332 if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0) 2333 return 1; 2334 if (meshpeer->peer_rcode == 0) 2335 return 1; 2336 break; 2337 } 2338 return 0; 2339 } 2340 2341 /* 2342 * Add a Mesh ID IE to a frame. 2343 */ 2344 uint8_t * 2345 ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 2346 { 2347 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2348 2349 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 2350 2351 *frm++ = IEEE80211_ELEMID_MESHID; 2352 *frm++ = ms->ms_idlen; 2353 memcpy(frm, ms->ms_id, ms->ms_idlen); 2354 return frm + ms->ms_idlen; 2355 } 2356 2357 /* 2358 * Add a Mesh Configuration IE to a frame. 2359 * For now just use HWMP routing, Airtime link metric, Null Congestion 2360 * Signaling, Null Sync Protocol and Null Authentication. 2361 */ 2362 uint8_t * 2363 ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 2364 { 2365 const struct ieee80211_mesh_state *ms = vap->iv_mesh; 2366 uint16_t caps; 2367 2368 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2369 2370 *frm++ = IEEE80211_ELEMID_MESHCONF; 2371 *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; 2372 *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 2373 *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 2374 *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 2375 *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 2376 *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 2377 /* NB: set the number of neighbors before the rest */ 2378 *frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1; 2379 if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL) 2380 *frm |= IEEE80211_MESHCONF_FORM_MP; 2381 frm += 1; 2382 caps = 0; 2383 if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 2384 caps |= IEEE80211_MESHCONF_CAP_AP; 2385 if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 2386 caps |= IEEE80211_MESHCONF_CAP_FWRD; 2387 ADDSHORT(frm, caps); 2388 return frm; 2389 } 2390 2391 /* 2392 * Add a Mesh Peer Management IE to a frame. 2393 */ 2394 uint8_t * 2395 ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 2396 uint16_t peerid, uint16_t reason) 2397 { 2398 /* XXX change for AH */ 2399 static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO; 2400 2401 KASSERT(localid != 0, ("localid == 0")); 2402 2403 *frm++ = IEEE80211_ELEMID_MESHPEER; 2404 switch (subtype) { 2405 case IEEE80211_MESH_PEER_LINK_OPEN: 2406 *frm++ = 6; /* length */ 2407 memcpy(frm, meshpeerproto, 4); 2408 frm += 4; 2409 ADDSHORT(frm, localid); /* local ID */ 2410 break; 2411 case IEEE80211_MESH_PEER_LINK_CONFIRM: 2412 KASSERT(peerid != 0, ("sending peer confirm without peer id")); 2413 *frm++ = 8; /* length */ 2414 memcpy(frm, meshpeerproto, 4); 2415 frm += 4; 2416 ADDSHORT(frm, localid); /* local ID */ 2417 ADDSHORT(frm, peerid); /* peer ID */ 2418 break; 2419 case IEEE80211_MESH_PEER_LINK_CLOSE: 2420 if (peerid) 2421 *frm++ = 10; /* length */ 2422 else 2423 *frm++ = 8; /* length */ 2424 memcpy(frm, meshpeerproto, 4); 2425 frm += 4; 2426 ADDSHORT(frm, localid); /* local ID */ 2427 if (peerid) 2428 ADDSHORT(frm, peerid); /* peer ID */ 2429 ADDSHORT(frm, reason); 2430 break; 2431 } 2432 return frm; 2433 } 2434 2435 /* 2436 * Compute an Airtime Link Metric for the link with this node. 2437 * 2438 * Based on Draft 3.0 spec (11B.10, p.149). 2439 */ 2440 /* 2441 * Max 802.11s overhead. 2442 */ 2443 #define IEEE80211_MESH_MAXOVERHEAD \ 2444 (sizeof(struct ieee80211_qosframe_addr4) \ 2445 + sizeof(struct ieee80211_meshcntl_ae11) \ 2446 + sizeof(struct llc) \ 2447 + IEEE80211_ADDR_LEN \ 2448 + IEEE80211_WEP_IVLEN \ 2449 + IEEE80211_WEP_KIDLEN \ 2450 + IEEE80211_WEP_CRCLEN \ 2451 + IEEE80211_WEP_MICLEN \ 2452 + IEEE80211_CRC_LEN) 2453 uint32_t 2454 mesh_airtime_calc(struct ieee80211_node *ni) 2455 { 2456 #define M_BITS 8 2457 #define S_FACTOR (2 * M_BITS) 2458 struct ieee80211com *ic = ni->ni_ic; 2459 struct ifnet *ifp = ni->ni_vap->iv_ifp; 2460 const static int nbits = 8192 << M_BITS; 2461 uint32_t overhead, rate, errrate; 2462 uint64_t res; 2463 2464 /* Time to transmit a frame */ 2465 rate = ni->ni_txrate; 2466 overhead = ieee80211_compute_duration(ic->ic_rt, 2467 ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 2468 /* Error rate in percentage */ 2469 /* XXX assuming small failures are ok */ 2470 errrate = (((ifp->if_oerrors + 2471 ifp->if_ierrors) / 100) << M_BITS) / 100; 2472 res = (overhead + (nbits / rate)) * 2473 ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 2474 2475 return (uint32_t)(res >> S_FACTOR); 2476 #undef M_BITS 2477 #undef S_FACTOR 2478 } 2479 2480 /* 2481 * Add a Mesh Link Metric report IE to a frame. 2482 */ 2483 uint8_t * 2484 ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric) 2485 { 2486 *frm++ = IEEE80211_ELEMID_MESHLINK; 2487 *frm++ = 4; 2488 ADDWORD(frm, metric); 2489 return frm; 2490 } 2491 #undef ADDSHORT 2492 #undef ADDWORD 2493 2494 /* 2495 * Initialize any mesh-specific node state. 2496 */ 2497 void 2498 ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 2499 { 2500 ni->ni_flags |= IEEE80211_NODE_QOS; 2501 callout_init_mp(&ni->ni_mltimer); 2502 } 2503 2504 /* 2505 * Cleanup any mesh-specific node state. 2506 */ 2507 void 2508 ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 2509 { 2510 struct ieee80211vap *vap = ni->ni_vap; 2511 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2512 2513 callout_stop(&ni->ni_mltimer); 2514 /* NB: short-circuit callbacks after mesh_vdetach */ 2515 if (vap->iv_mesh != NULL) 2516 ms->ms_ppath->mpp_peerdown(ni); 2517 } 2518 2519 void 2520 ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 2521 { 2522 ni->ni_meshidlen = ie[1]; 2523 memcpy(ni->ni_meshid, ie + 2, ie[1]); 2524 } 2525 2526 /* 2527 * Setup mesh-specific node state on neighbor discovery. 2528 */ 2529 void 2530 ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 2531 const struct ieee80211_frame *wh, 2532 const struct ieee80211_scanparams *sp) 2533 { 2534 ieee80211_parse_meshid(ni, sp->meshid); 2535 } 2536 2537 void 2538 ieee80211_mesh_update_beacon(struct ieee80211vap *vap, 2539 struct ieee80211_beacon_offsets *bo) 2540 { 2541 KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 2542 2543 if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 2544 (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 2545 clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 2546 } 2547 } 2548 2549 static int 2550 mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2551 { 2552 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2553 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2554 struct ieee80211_mesh_route *rt; 2555 struct ieee80211req_mesh_route *imr; 2556 size_t len, off; 2557 uint8_t *p; 2558 int error; 2559 2560 if (vap->iv_opmode != IEEE80211_M_MBSS) 2561 return ENOSYS; 2562 2563 error = 0; 2564 switch (ireq->i_type) { 2565 case IEEE80211_IOC_MESH_ID: 2566 ireq->i_len = ms->ms_idlen; 2567 memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 2568 error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 2569 break; 2570 case IEEE80211_IOC_MESH_AP: 2571 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 2572 break; 2573 case IEEE80211_IOC_MESH_FWRD: 2574 ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 2575 break; 2576 case IEEE80211_IOC_MESH_TTL: 2577 ireq->i_val = ms->ms_ttl; 2578 break; 2579 case IEEE80211_IOC_MESH_RTCMD: 2580 switch (ireq->i_val) { 2581 case IEEE80211_MESH_RTCMD_LIST: 2582 len = 0; 2583 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2584 len += sizeof(*imr); 2585 } 2586 if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 2587 ireq->i_len = len; 2588 return ENOMEM; 2589 } 2590 ireq->i_len = len; 2591 /* XXX M_WAIT? */ 2592 p = kmalloc(len, M_TEMP, M_INTWAIT | M_ZERO); 2593 if (p == NULL) 2594 return ENOMEM; 2595 off = 0; 2596 TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 2597 if (off >= len) 2598 break; 2599 imr = (struct ieee80211req_mesh_route *) 2600 (p + off); 2601 imr->imr_flags = rt->rt_flags; 2602 IEEE80211_ADDR_COPY(imr->imr_dest, 2603 rt->rt_dest); 2604 IEEE80211_ADDR_COPY(imr->imr_nexthop, 2605 rt->rt_nexthop); 2606 imr->imr_metric = rt->rt_metric; 2607 imr->imr_nhops = rt->rt_nhops; 2608 imr->imr_lifetime = rt->rt_lifetime; 2609 imr->imr_lastmseq = rt->rt_lastmseq; 2610 off += sizeof(*imr); 2611 } 2612 error = copyout(p, (uint8_t *)ireq->i_data, 2613 ireq->i_len); 2614 kfree(p, M_TEMP); 2615 break; 2616 case IEEE80211_MESH_RTCMD_FLUSH: 2617 case IEEE80211_MESH_RTCMD_ADD: 2618 case IEEE80211_MESH_RTCMD_DELETE: 2619 return EINVAL; 2620 default: 2621 return ENOSYS; 2622 } 2623 break; 2624 case IEEE80211_IOC_MESH_PR_METRIC: 2625 len = strlen(ms->ms_pmetric->mpm_descr); 2626 if (ireq->i_len < len) 2627 return EINVAL; 2628 ireq->i_len = len; 2629 error = copyout(ms->ms_pmetric->mpm_descr, 2630 (uint8_t *)ireq->i_data, len); 2631 break; 2632 case IEEE80211_IOC_MESH_PR_PATH: 2633 len = strlen(ms->ms_ppath->mpp_descr); 2634 if (ireq->i_len < len) 2635 return EINVAL; 2636 ireq->i_len = len; 2637 error = copyout(ms->ms_ppath->mpp_descr, 2638 (uint8_t *)ireq->i_data, len); 2639 break; 2640 default: 2641 return ENOSYS; 2642 } 2643 2644 return error; 2645 } 2646 IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 2647 2648 static int 2649 mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 2650 { 2651 struct ieee80211_mesh_state *ms = vap->iv_mesh; 2652 uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 2653 uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 2654 char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 2655 int error; 2656 2657 if (vap->iv_opmode != IEEE80211_M_MBSS) 2658 return ENOSYS; 2659 2660 error = 0; 2661 switch (ireq->i_type) { 2662 case IEEE80211_IOC_MESH_ID: 2663 if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 2664 return EINVAL; 2665 error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 2666 if (error != 0) 2667 break; 2668 memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 2669 ms->ms_idlen = ireq->i_len; 2670 memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 2671 error = ENETRESET; 2672 break; 2673 case IEEE80211_IOC_MESH_AP: 2674 if (ireq->i_val) 2675 ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 2676 else 2677 ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 2678 error = ENETRESET; 2679 break; 2680 case IEEE80211_IOC_MESH_FWRD: 2681 if (ireq->i_val) 2682 ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 2683 else 2684 ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 2685 break; 2686 case IEEE80211_IOC_MESH_TTL: 2687 ms->ms_ttl = (uint8_t) ireq->i_val; 2688 break; 2689 case IEEE80211_IOC_MESH_RTCMD: 2690 switch (ireq->i_val) { 2691 case IEEE80211_MESH_RTCMD_LIST: 2692 return EINVAL; 2693 case IEEE80211_MESH_RTCMD_FLUSH: 2694 ieee80211_mesh_rt_flush(vap); 2695 break; 2696 case IEEE80211_MESH_RTCMD_ADD: 2697 if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 2698 IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 2699 return EINVAL; 2700 error = copyin(ireq->i_data, &tmpaddr, 2701 IEEE80211_ADDR_LEN); 2702 if (error == 0) 2703 ieee80211_mesh_discover(vap, tmpaddr, NULL); 2704 break; 2705 case IEEE80211_MESH_RTCMD_DELETE: 2706 ieee80211_mesh_rt_del(vap, ireq->i_data); 2707 break; 2708 default: 2709 return ENOSYS; 2710 } 2711 break; 2712 case IEEE80211_IOC_MESH_PR_METRIC: 2713 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2714 if (error == 0) { 2715 error = mesh_select_proto_metric(vap, tmpproto); 2716 if (error == 0) 2717 error = ENETRESET; 2718 } 2719 break; 2720 case IEEE80211_IOC_MESH_PR_PATH: 2721 error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 2722 if (error == 0) { 2723 error = mesh_select_proto_path(vap, tmpproto); 2724 if (error == 0) 2725 error = ENETRESET; 2726 } 2727 break; 2728 default: 2729 return ENOSYS; 2730 } 2731 return error; 2732 } 2733 IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 2734