ieee80211_mesh.c revision 246710
1195618Srpaulo/*- 2195618Srpaulo * Copyright (c) 2009 The FreeBSD Foundation 3195618Srpaulo * All rights reserved. 4195618Srpaulo * 5195618Srpaulo * This software was developed by Rui Paulo under sponsorship from the 6195618Srpaulo * FreeBSD Foundation. 7195618Srpaulo * 8195618Srpaulo * Redistribution and use in source and binary forms, with or without 9195618Srpaulo * modification, are permitted provided that the following conditions 10195618Srpaulo * are met: 11195618Srpaulo * 1. Redistributions of source code must retain the above copyright 12195618Srpaulo * notice, this list of conditions and the following disclaimer. 13195618Srpaulo * 2. Redistributions in binary form must reproduce the above copyright 14195618Srpaulo * notice, this list of conditions and the following disclaimer in the 15195618Srpaulo * documentation and/or other materials provided with the distribution. 16195618Srpaulo * 17195618Srpaulo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18195618Srpaulo * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19195618Srpaulo * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20195618Srpaulo * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21195618Srpaulo * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22195618Srpaulo * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23195618Srpaulo * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24195618Srpaulo * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25195618Srpaulo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26195618Srpaulo * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27195618Srpaulo * SUCH DAMAGE. 28195618Srpaulo */ 29195618Srpaulo#include <sys/cdefs.h> 30195618Srpaulo#ifdef __FreeBSD__ 31195618Srpaulo__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_mesh.c 246710 2013-02-12 11:24:37Z glebius $"); 32195618Srpaulo#endif 33195618Srpaulo 34195618Srpaulo/* 35195618Srpaulo * IEEE 802.11s Mesh Point (MBSS) support. 36195618Srpaulo * 37195618Srpaulo * Based on March 2009, D3.0 802.11s draft spec. 38195618Srpaulo */ 39195618Srpaulo#include "opt_inet.h" 40195618Srpaulo#include "opt_wlan.h" 41195618Srpaulo 42195618Srpaulo#include <sys/param.h> 43195618Srpaulo#include <sys/systm.h> 44195618Srpaulo#include <sys/mbuf.h> 45195618Srpaulo#include <sys/malloc.h> 46195618Srpaulo#include <sys/kernel.h> 47195618Srpaulo 48195618Srpaulo#include <sys/socket.h> 49195618Srpaulo#include <sys/sockio.h> 50195618Srpaulo#include <sys/endian.h> 51195618Srpaulo#include <sys/errno.h> 52195618Srpaulo#include <sys/proc.h> 53195618Srpaulo#include <sys/sysctl.h> 54195618Srpaulo 55246511Smonthadar#include <net/bpf.h> 56195618Srpaulo#include <net/if.h> 57195618Srpaulo#include <net/if_media.h> 58195618Srpaulo#include <net/if_llc.h> 59195618Srpaulo#include <net/ethernet.h> 60195618Srpaulo 61195618Srpaulo#include <net80211/ieee80211_var.h> 62195618Srpaulo#include <net80211/ieee80211_action.h> 63246537Sadrian#ifdef IEEE80211_SUPPORT_SUPERG 64246537Sadrian#include <net80211/ieee80211_superg.h> 65246537Sadrian#endif 66195618Srpaulo#include <net80211/ieee80211_input.h> 67195618Srpaulo#include <net80211/ieee80211_mesh.h> 68195618Srpaulo 69195784Srpaulostatic void mesh_rt_flush_invalid(struct ieee80211vap *); 70195618Srpaulostatic int mesh_select_proto_path(struct ieee80211vap *, const char *); 71195618Srpaulostatic int mesh_select_proto_metric(struct ieee80211vap *, const char *); 72195618Srpaulostatic void mesh_vattach(struct ieee80211vap *); 73195618Srpaulostatic int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); 74195784Srpaulostatic void mesh_rt_cleanup_cb(void *); 75246506Smonthadarstatic void mesh_gatemode_setup(struct ieee80211vap *); 76246506Smonthadarstatic void mesh_gatemode_cb(void *); 77195661Srpaulostatic void mesh_linkchange(struct ieee80211_node *, 78195661Srpaulo enum ieee80211_mesh_mlstate); 79195618Srpaulostatic void mesh_checkid(void *, struct ieee80211_node *); 80195618Srpaulostatic uint32_t mesh_generateid(struct ieee80211vap *); 81195618Srpaulostatic int mesh_checkpseq(struct ieee80211vap *, 82195618Srpaulo const uint8_t [IEEE80211_ADDR_LEN], uint32_t); 83246511Smonthadarstatic void mesh_transmit_to_gate(struct ieee80211vap *, struct mbuf *, 84246511Smonthadar struct ieee80211_mesh_route *); 85195618Srpaulostatic void mesh_forward(struct ieee80211vap *, struct mbuf *, 86195618Srpaulo const struct ieee80211_meshcntl *); 87195618Srpaulostatic int mesh_input(struct ieee80211_node *, struct mbuf *, int, int); 88195618Srpaulostatic void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 89195618Srpaulo int, int); 90205277Srpaulostatic void mesh_recv_ctl(struct ieee80211_node *, struct mbuf *, int); 91195618Srpaulostatic void mesh_peer_timeout_setup(struct ieee80211_node *); 92195618Srpaulostatic void mesh_peer_timeout_backoff(struct ieee80211_node *); 93195618Srpaulostatic void mesh_peer_timeout_cb(void *); 94195618Srpaulostatic __inline void 95195618Srpaulo mesh_peer_timeout_stop(struct ieee80211_node *); 96195618Srpaulostatic int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); 97195618Srpaulostatic int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); 98197413Srpaulostatic int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, 99197413Srpaulo const uint8_t *); 100195618Srpaulouint32_t mesh_airtime_calc(struct ieee80211_node *); 101195618Srpaulo 102195618Srpaulo/* 103195618Srpaulo * Timeout values come from the specification and are in milliseconds. 104195618Srpaulo */ 105227309Sedstatic SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, 106195618Srpaulo "IEEE 802.11s parameters"); 107246506Smonthadarstatic int ieee80211_mesh_gateint = -1; 108246506SmonthadarSYSCTL_PROC(_net_wlan_mesh, OID_AUTO, gateint, CTLTYPE_INT | CTLFLAG_RW, 109246506Smonthadar &ieee80211_mesh_gateint, 0, ieee80211_sysctl_msecs_ticks, "I", 110246506Smonthadar "mesh gate interval (ms)"); 111195618Srpaulostatic int ieee80211_mesh_retrytimeout = -1; 112195618SrpauloSYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, 113195618Srpaulo &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 114195618Srpaulo "Retry timeout (msec)"); 115195618Srpaulostatic int ieee80211_mesh_holdingtimeout = -1; 116246537Sadrian 117195618SrpauloSYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, 118195618Srpaulo &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 119195618Srpaulo "Holding state timeout (msec)"); 120195618Srpaulostatic int ieee80211_mesh_confirmtimeout = -1; 121195618SrpauloSYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, 122195618Srpaulo &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 123195618Srpaulo "Confirm state timeout (msec)"); 124246497Smonthadarstatic int ieee80211_mesh_backofftimeout = -1; 125246497SmonthadarSYSCTL_PROC(_net_wlan_mesh, OID_AUTO, backofftimeout, CTLTYPE_INT | CTLFLAG_RW, 126246497Smonthadar &ieee80211_mesh_backofftimeout, 0, ieee80211_sysctl_msecs_ticks, "I", 127246497Smonthadar "Backoff timeout (msec). This is to throutles peering forever when " 128246497Smonthadar "not receving answer or is rejected by a neighbor"); 129195618Srpaulostatic int ieee80211_mesh_maxretries = 2; 130195618SrpauloSYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, 131195618Srpaulo &ieee80211_mesh_maxretries, 0, 132195618Srpaulo "Maximum retries during peer link establishment"); 133246497Smonthadarstatic int ieee80211_mesh_maxholding = 2; 134246497SmonthadarSYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxholding, CTLTYPE_INT | CTLFLAG_RW, 135246497Smonthadar &ieee80211_mesh_maxholding, 0, 136246497Smonthadar "Maximum times we are allowed to transition to HOLDING state before " 137246497Smonthadar "backinoff during peer link establishment"); 138195618Srpaulo 139195618Srpaulostatic const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = 140195618Srpaulo { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 141195618Srpaulo 142195618Srpaulostatic ieee80211_recv_action_func mesh_recv_action_meshpeering_open; 143195618Srpaulostatic ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; 144195618Srpaulostatic ieee80211_recv_action_func mesh_recv_action_meshpeering_close; 145232479Sadrianstatic ieee80211_recv_action_func mesh_recv_action_meshlmetric; 146246506Smonthadarstatic ieee80211_recv_action_func mesh_recv_action_meshgate; 147195618Srpaulo 148195618Srpaulostatic ieee80211_send_action_func mesh_send_action_meshpeering_open; 149195618Srpaulostatic ieee80211_send_action_func mesh_send_action_meshpeering_confirm; 150195618Srpaulostatic ieee80211_send_action_func mesh_send_action_meshpeering_close; 151232479Sadrianstatic ieee80211_send_action_func mesh_send_action_meshlmetric; 152246506Smonthadarstatic ieee80211_send_action_func mesh_send_action_meshgate; 153195618Srpaulo 154195618Srpaulostatic const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { 155195618Srpaulo .mpm_descr = "AIRTIME", 156197975Srpaulo .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, 157195618Srpaulo .mpm_metric = mesh_airtime_calc, 158195618Srpaulo}; 159195618Srpaulo 160195618Srpaulostatic struct ieee80211_mesh_proto_path mesh_proto_paths[4]; 161195618Srpaulostatic struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; 162195618Srpaulo 163234877Smonthadar#define RT_ENTRY_LOCK(rt) mtx_lock(&(rt)->rt_lock) 164234877Smonthadar#define RT_ENTRY_LOCK_ASSERT(rt) mtx_assert(&(rt)->rt_lock, MA_OWNED) 165234877Smonthadar#define RT_ENTRY_UNLOCK(rt) mtx_unlock(&(rt)->rt_lock) 166234877Smonthadar 167195618Srpaulo#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) 168195784Srpaulo#define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED) 169195618Srpaulo#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) 170195618Srpaulo 171232625SadrianMALLOC_DEFINE(M_80211_MESH_PREQ, "80211preq", "802.11 MESH Path Request frame"); 172232625SadrianMALLOC_DEFINE(M_80211_MESH_PREP, "80211prep", "802.11 MESH Path Reply frame"); 173232625SadrianMALLOC_DEFINE(M_80211_MESH_PERR, "80211perr", "802.11 MESH Path Error frame"); 174232625Sadrian 175234877Smonthadar/* The longer one of the lifetime should be stored as new lifetime */ 176234877Smonthadar#define MESH_ROUTE_LIFETIME_MAX(a, b) (a > b ? a : b) 177234877Smonthadar 178246508SmonthadarMALLOC_DEFINE(M_80211_MESH_RT, "80211mesh_rt", "802.11s routing table"); 179246508SmonthadarMALLOC_DEFINE(M_80211_MESH_GT_RT, "80211mesh_gt", "802.11s known gates table"); 180195618Srpaulo 181195618Srpaulo/* 182195618Srpaulo * Helper functions to manipulate the Mesh routing table. 183195618Srpaulo */ 184195784Srpaulo 185195784Srpaulostatic struct ieee80211_mesh_route * 186195784Srpaulomesh_rt_find_locked(struct ieee80211_mesh_state *ms, 187195784Srpaulo const uint8_t dest[IEEE80211_ADDR_LEN]) 188195784Srpaulo{ 189195784Srpaulo struct ieee80211_mesh_route *rt; 190195784Srpaulo 191195784Srpaulo MESH_RT_LOCK_ASSERT(ms); 192195784Srpaulo 193195784Srpaulo TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 194195784Srpaulo if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) 195195784Srpaulo return rt; 196195784Srpaulo } 197195784Srpaulo return NULL; 198195784Srpaulo} 199195784Srpaulo 200195784Srpaulostatic struct ieee80211_mesh_route * 201234894Smonthadarmesh_rt_add_locked(struct ieee80211vap *vap, 202195784Srpaulo const uint8_t dest[IEEE80211_ADDR_LEN]) 203195784Srpaulo{ 204234894Smonthadar struct ieee80211_mesh_state *ms = vap->iv_mesh; 205195784Srpaulo struct ieee80211_mesh_route *rt; 206195784Srpaulo 207195784Srpaulo KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), 208195784Srpaulo ("%s: adding broadcast to the routing table", __func__)); 209195784Srpaulo 210195784Srpaulo MESH_RT_LOCK_ASSERT(ms); 211195784Srpaulo 212195784Srpaulo rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) + 213195784Srpaulo ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO); 214195784Srpaulo if (rt != NULL) { 215234894Smonthadar rt->rt_vap = vap; 216195784Srpaulo IEEE80211_ADDR_COPY(rt->rt_dest, dest); 217195784Srpaulo rt->rt_priv = (void *)ALIGN(&rt[1]); 218234877Smonthadar mtx_init(&rt->rt_lock, "MBSS_RT", "802.11s route entry", MTX_DEF); 219234894Smonthadar callout_init(&rt->rt_discovery, CALLOUT_MPSAFE); 220234877Smonthadar rt->rt_updtime = ticks; /* create time */ 221195784Srpaulo TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); 222195784Srpaulo } 223195784Srpaulo return rt; 224195784Srpaulo} 225195784Srpaulo 226195618Srpaulostruct ieee80211_mesh_route * 227195618Srpauloieee80211_mesh_rt_find(struct ieee80211vap *vap, 228195618Srpaulo const uint8_t dest[IEEE80211_ADDR_LEN]) 229195618Srpaulo{ 230195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 231195618Srpaulo struct ieee80211_mesh_route *rt; 232195618Srpaulo 233195618Srpaulo MESH_RT_LOCK(ms); 234195784Srpaulo rt = mesh_rt_find_locked(ms, dest); 235195618Srpaulo MESH_RT_UNLOCK(ms); 236195784Srpaulo return rt; 237195618Srpaulo} 238195618Srpaulo 239195618Srpaulostruct ieee80211_mesh_route * 240195618Srpauloieee80211_mesh_rt_add(struct ieee80211vap *vap, 241195618Srpaulo const uint8_t dest[IEEE80211_ADDR_LEN]) 242195618Srpaulo{ 243195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 244195618Srpaulo struct ieee80211_mesh_route *rt; 245195618Srpaulo 246195618Srpaulo KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, 247195618Srpaulo ("%s: duplicate entry in the routing table", __func__)); 248195618Srpaulo KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), 249195618Srpaulo ("%s: adding self to the routing table", __func__)); 250195618Srpaulo 251195618Srpaulo MESH_RT_LOCK(ms); 252234894Smonthadar rt = mesh_rt_add_locked(vap, dest); 253195618Srpaulo MESH_RT_UNLOCK(ms); 254195618Srpaulo return rt; 255195618Srpaulo} 256195618Srpaulo 257195784Srpaulo/* 258234877Smonthadar * Update the route lifetime and returns the updated lifetime. 259234877Smonthadar * If new_lifetime is zero and route is timedout it will be invalidated. 260234877Smonthadar * new_lifetime is in msec 261234877Smonthadar */ 262234877Smonthadarint 263234877Smonthadarieee80211_mesh_rt_update(struct ieee80211_mesh_route *rt, int new_lifetime) 264234877Smonthadar{ 265234877Smonthadar int timesince, now; 266234877Smonthadar uint32_t lifetime = 0; 267234877Smonthadar 268234881Smonthadar KASSERT(rt != NULL, ("route is NULL")); 269234881Smonthadar 270234877Smonthadar now = ticks; 271234877Smonthadar RT_ENTRY_LOCK(rt); 272234879Smonthadar 273234879Smonthadar /* dont clobber a proxy entry gated by us */ 274234879Smonthadar if (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY && rt->rt_nhops == 0) { 275234879Smonthadar RT_ENTRY_UNLOCK(rt); 276234879Smonthadar return rt->rt_lifetime; 277234879Smonthadar } 278234879Smonthadar 279234877Smonthadar timesince = ticks_to_msecs(now - rt->rt_updtime); 280234877Smonthadar rt->rt_updtime = now; 281234877Smonthadar if (timesince >= rt->rt_lifetime) { 282234877Smonthadar if (new_lifetime != 0) { 283234877Smonthadar rt->rt_lifetime = new_lifetime; 284234877Smonthadar } 285234877Smonthadar else { 286234877Smonthadar rt->rt_flags &= ~IEEE80211_MESHRT_FLAGS_VALID; 287234877Smonthadar rt->rt_lifetime = 0; 288234877Smonthadar } 289234877Smonthadar } else { 290234877Smonthadar /* update what is left of lifetime */ 291234877Smonthadar rt->rt_lifetime = rt->rt_lifetime - timesince; 292234877Smonthadar rt->rt_lifetime = MESH_ROUTE_LIFETIME_MAX( 293234877Smonthadar new_lifetime, rt->rt_lifetime); 294234877Smonthadar } 295234877Smonthadar lifetime = rt->rt_lifetime; 296234877Smonthadar RT_ENTRY_UNLOCK(rt); 297234877Smonthadar 298234877Smonthadar return lifetime; 299234877Smonthadar} 300234877Smonthadar 301234877Smonthadar/* 302195784Srpaulo * Add a proxy route (as needed) for the specified destination. 303195784Srpaulo */ 304195618Srpaulovoid 305195784Srpauloieee80211_mesh_proxy_check(struct ieee80211vap *vap, 306195784Srpaulo const uint8_t dest[IEEE80211_ADDR_LEN]) 307195784Srpaulo{ 308195784Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 309195784Srpaulo struct ieee80211_mesh_route *rt; 310195784Srpaulo 311195784Srpaulo MESH_RT_LOCK(ms); 312195784Srpaulo rt = mesh_rt_find_locked(ms, dest); 313195784Srpaulo if (rt == NULL) { 314234894Smonthadar rt = mesh_rt_add_locked(vap, dest); 315195784Srpaulo if (rt == NULL) { 316195784Srpaulo IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 317195784Srpaulo "%s", "unable to add proxy entry"); 318195784Srpaulo vap->iv_stats.is_mesh_rtaddfailed++; 319195784Srpaulo } else { 320195908Srpaulo IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 321195908Srpaulo "%s", "add proxy entry"); 322234878Smonthadar IEEE80211_ADDR_COPY(rt->rt_mesh_gate, vap->iv_myaddr); 323195784Srpaulo IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 324195784Srpaulo rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 325195784Srpaulo | IEEE80211_MESHRT_FLAGS_PROXY; 326195784Srpaulo } 327195784Srpaulo } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 328234878Smonthadar KASSERT(rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY, 329234878Smonthadar ("no proxy flag for poxy entry")); 330195784Srpaulo struct ieee80211com *ic = vap->iv_ic; 331195784Srpaulo /* 332195784Srpaulo * Fix existing entry created by received frames from 333195784Srpaulo * stations that have some memory of dest. We also 334195784Srpaulo * flush any frames held on the staging queue; delivering 335195784Srpaulo * them is too much trouble right now. 336195784Srpaulo */ 337195784Srpaulo IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 338195784Srpaulo "%s", "fix proxy entry"); 339195784Srpaulo IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); 340195784Srpaulo rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID 341195784Srpaulo | IEEE80211_MESHRT_FLAGS_PROXY; 342195784Srpaulo /* XXX belongs in hwmp */ 343195784Srpaulo ieee80211_ageq_drain_node(&ic->ic_stageq, 344195784Srpaulo (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); 345195784Srpaulo /* XXX stat? */ 346195784Srpaulo } 347195784Srpaulo MESH_RT_UNLOCK(ms); 348195784Srpaulo} 349195784Srpaulo 350195784Srpaulostatic __inline void 351195784Srpaulomesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) 352195784Srpaulo{ 353195784Srpaulo TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); 354234877Smonthadar /* 355234877Smonthadar * Grab the lock before destroying it, to be sure no one else 356234877Smonthadar * is holding the route. 357234877Smonthadar */ 358234877Smonthadar RT_ENTRY_LOCK(rt); 359234894Smonthadar callout_drain(&rt->rt_discovery); 360234877Smonthadar mtx_destroy(&rt->rt_lock); 361195784Srpaulo free(rt, M_80211_MESH_RT); 362195784Srpaulo} 363195784Srpaulo 364195784Srpaulovoid 365195618Srpauloieee80211_mesh_rt_del(struct ieee80211vap *vap, 366195618Srpaulo const uint8_t dest[IEEE80211_ADDR_LEN]) 367195618Srpaulo{ 368195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 369195618Srpaulo struct ieee80211_mesh_route *rt, *next; 370195618Srpaulo 371195618Srpaulo MESH_RT_LOCK(ms); 372195618Srpaulo TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 373195618Srpaulo if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { 374234890Smonthadar if (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY) { 375234890Smonthadar ms->ms_ppath->mpp_senderror(vap, dest, rt, 376234890Smonthadar IEEE80211_REASON_MESH_PERR_NO_PROXY); 377234890Smonthadar } else { 378234890Smonthadar ms->ms_ppath->mpp_senderror(vap, dest, rt, 379234890Smonthadar IEEE80211_REASON_MESH_PERR_DEST_UNREACH); 380234890Smonthadar } 381195784Srpaulo mesh_rt_del(ms, rt); 382195618Srpaulo MESH_RT_UNLOCK(ms); 383195618Srpaulo return; 384195618Srpaulo } 385195618Srpaulo } 386195618Srpaulo MESH_RT_UNLOCK(ms); 387195618Srpaulo} 388195618Srpaulo 389195618Srpaulovoid 390195618Srpauloieee80211_mesh_rt_flush(struct ieee80211vap *vap) 391195618Srpaulo{ 392195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 393195618Srpaulo struct ieee80211_mesh_route *rt, *next; 394195618Srpaulo 395195618Srpaulo if (ms == NULL) 396195618Srpaulo return; 397195618Srpaulo MESH_RT_LOCK(ms); 398195784Srpaulo TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) 399195784Srpaulo mesh_rt_del(ms, rt); 400195784Srpaulo MESH_RT_UNLOCK(ms); 401195784Srpaulo} 402195784Srpaulo 403195908Srpaulovoid 404195908Srpauloieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, 405195908Srpaulo const uint8_t peer[IEEE80211_ADDR_LEN]) 406195908Srpaulo{ 407195908Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 408195908Srpaulo struct ieee80211_mesh_route *rt, *next; 409195908Srpaulo 410195908Srpaulo MESH_RT_LOCK(ms); 411195908Srpaulo TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 412195908Srpaulo if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) 413195908Srpaulo mesh_rt_del(ms, rt); 414195908Srpaulo } 415195908Srpaulo MESH_RT_UNLOCK(ms); 416195908Srpaulo} 417195908Srpaulo 418195784Srpaulo/* 419195784Srpaulo * Flush expired routing entries, i.e. those in invalid state for 420195784Srpaulo * some time. 421195784Srpaulo */ 422195784Srpaulostatic void 423195784Srpaulomesh_rt_flush_invalid(struct ieee80211vap *vap) 424195784Srpaulo{ 425195784Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 426195784Srpaulo struct ieee80211_mesh_route *rt, *next; 427195784Srpaulo 428195784Srpaulo if (ms == NULL) 429195784Srpaulo return; 430195784Srpaulo MESH_RT_LOCK(ms); 431195618Srpaulo TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { 432234894Smonthadar /* Discover paths will be deleted by their own callout */ 433234894Smonthadar if (rt->rt_flags & IEEE80211_MESHRT_FLAGS_DISCOVER) 434234894Smonthadar continue; 435234877Smonthadar ieee80211_mesh_rt_update(rt, 0); 436234894Smonthadar if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) 437195784Srpaulo mesh_rt_del(ms, rt); 438195618Srpaulo } 439195618Srpaulo MESH_RT_UNLOCK(ms); 440195618Srpaulo} 441195618Srpaulo 442195618Srpaulo#define N(a) (sizeof(a) / sizeof(a[0])) 443195618Srpauloint 444195618Srpauloieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) 445195618Srpaulo{ 446195618Srpaulo int i, firstempty = -1; 447195618Srpaulo 448195618Srpaulo for (i = 0; i < N(mesh_proto_paths); i++) { 449197975Srpaulo if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, 450197975Srpaulo IEEE80211_MESH_PROTO_DSZ) == 0) 451195618Srpaulo return EEXIST; 452197975Srpaulo if (!mesh_proto_paths[i].mpp_active && firstempty == -1) 453195618Srpaulo firstempty = i; 454195618Srpaulo } 455195618Srpaulo if (firstempty < 0) 456195618Srpaulo return ENOSPC; 457195618Srpaulo memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); 458197975Srpaulo mesh_proto_paths[firstempty].mpp_active = 1; 459195618Srpaulo return 0; 460195618Srpaulo} 461195618Srpaulo 462195618Srpauloint 463195618Srpauloieee80211_mesh_register_proto_metric(const struct 464195618Srpaulo ieee80211_mesh_proto_metric *mpm) 465195618Srpaulo{ 466195618Srpaulo int i, firstempty = -1; 467195618Srpaulo 468195618Srpaulo for (i = 0; i < N(mesh_proto_metrics); i++) { 469197975Srpaulo if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, 470197975Srpaulo IEEE80211_MESH_PROTO_DSZ) == 0) 471195618Srpaulo return EEXIST; 472197975Srpaulo if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) 473195618Srpaulo firstempty = i; 474195618Srpaulo } 475195618Srpaulo if (firstempty < 0) 476195618Srpaulo return ENOSPC; 477195618Srpaulo memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); 478197975Srpaulo mesh_proto_metrics[firstempty].mpm_active = 1; 479195618Srpaulo return 0; 480195618Srpaulo} 481195618Srpaulo 482195618Srpaulostatic int 483195618Srpaulomesh_select_proto_path(struct ieee80211vap *vap, const char *name) 484195618Srpaulo{ 485195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 486195618Srpaulo int i; 487195618Srpaulo 488195618Srpaulo for (i = 0; i < N(mesh_proto_paths); i++) { 489195618Srpaulo if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { 490195618Srpaulo ms->ms_ppath = &mesh_proto_paths[i]; 491195618Srpaulo return 0; 492195618Srpaulo } 493195618Srpaulo } 494195618Srpaulo return ENOENT; 495195618Srpaulo} 496195618Srpaulo 497195618Srpaulostatic int 498195618Srpaulomesh_select_proto_metric(struct ieee80211vap *vap, const char *name) 499195618Srpaulo{ 500195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 501195618Srpaulo int i; 502195618Srpaulo 503195618Srpaulo for (i = 0; i < N(mesh_proto_metrics); i++) { 504195618Srpaulo if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { 505195618Srpaulo ms->ms_pmetric = &mesh_proto_metrics[i]; 506195618Srpaulo return 0; 507195618Srpaulo } 508195618Srpaulo } 509195618Srpaulo return ENOENT; 510195618Srpaulo} 511195618Srpaulo#undef N 512195618Srpaulo 513195618Srpaulostatic void 514246506Smonthadarmesh_gatemode_setup(struct ieee80211vap *vap) 515246506Smonthadar{ 516246506Smonthadar struct ieee80211_mesh_state *ms = vap->iv_mesh; 517246506Smonthadar 518246506Smonthadar /* 519246506Smonthadar * NB: When a mesh gate is running as a ROOT it shall 520246506Smonthadar * not send out periodic GANNs but instead mark the 521246506Smonthadar * mesh gate flag for the corresponding proactive PREQ 522246506Smonthadar * and RANN frames. 523246506Smonthadar */ 524246506Smonthadar if (ms->ms_flags & IEEE80211_MESHFLAGS_ROOT || 525246506Smonthadar (ms->ms_flags & IEEE80211_MESHFLAGS_GATE) == 0) { 526246506Smonthadar callout_drain(&ms->ms_gatetimer); 527246506Smonthadar return ; 528246506Smonthadar } 529246506Smonthadar callout_reset(&ms->ms_gatetimer, ieee80211_mesh_gateint, 530246506Smonthadar mesh_gatemode_cb, vap); 531246506Smonthadar} 532246506Smonthadar 533246506Smonthadarstatic void 534246506Smonthadarmesh_gatemode_cb(void *arg) 535246506Smonthadar{ 536246506Smonthadar struct ieee80211vap *vap = (struct ieee80211vap *)arg; 537246506Smonthadar struct ieee80211_mesh_state *ms = vap->iv_mesh; 538246506Smonthadar struct ieee80211_meshgann_ie gann; 539246506Smonthadar 540246506Smonthadar gann.gann_flags = 0; /* Reserved */ 541246506Smonthadar gann.gann_hopcount = 0; 542246506Smonthadar gann.gann_ttl = ms->ms_ttl; 543246506Smonthadar IEEE80211_ADDR_COPY(gann.gann_addr, vap->iv_myaddr); 544246506Smonthadar gann.gann_seq = ms->ms_gateseq++; 545246506Smonthadar gann.gann_interval = ieee80211_mesh_gateint; 546246506Smonthadar 547246520Smonthadar IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, vap->iv_bss, 548246520Smonthadar "send broadcast GANN (seq %u)", gann.gann_seq); 549246520Smonthadar 550246506Smonthadar ieee80211_send_action(vap->iv_bss, IEEE80211_ACTION_CAT_MESH, 551246506Smonthadar IEEE80211_ACTION_MESH_GANN, &gann); 552246506Smonthadar mesh_gatemode_setup(vap); 553246506Smonthadar} 554246506Smonthadar 555246506Smonthadarstatic void 556195618Srpauloieee80211_mesh_init(void) 557195618Srpaulo{ 558195618Srpaulo 559195618Srpaulo memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); 560195618Srpaulo memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); 561195618Srpaulo 562195618Srpaulo /* 563195618Srpaulo * Setup mesh parameters that depends on the clock frequency. 564195618Srpaulo */ 565246506Smonthadar ieee80211_mesh_gateint = msecs_to_ticks(10000); 566195618Srpaulo ieee80211_mesh_retrytimeout = msecs_to_ticks(40); 567195618Srpaulo ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); 568195618Srpaulo ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); 569246497Smonthadar ieee80211_mesh_backofftimeout = msecs_to_ticks(5000); 570195618Srpaulo 571195618Srpaulo /* 572195618Srpaulo * Register action frame handlers. 573195618Srpaulo */ 574234874Smonthadar ieee80211_recv_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 575195618Srpaulo IEEE80211_ACTION_MESHPEERING_OPEN, 576195618Srpaulo mesh_recv_action_meshpeering_open); 577234874Smonthadar ieee80211_recv_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 578195618Srpaulo IEEE80211_ACTION_MESHPEERING_CONFIRM, 579195618Srpaulo mesh_recv_action_meshpeering_confirm); 580234874Smonthadar ieee80211_recv_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 581195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 582195618Srpaulo mesh_recv_action_meshpeering_close); 583232479Sadrian ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESH, 584232479Sadrian IEEE80211_ACTION_MESH_LMETRIC, mesh_recv_action_meshlmetric); 585246506Smonthadar ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESH, 586246506Smonthadar IEEE80211_ACTION_MESH_GANN, mesh_recv_action_meshgate); 587195618Srpaulo 588234874Smonthadar ieee80211_send_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 589195618Srpaulo IEEE80211_ACTION_MESHPEERING_OPEN, 590195618Srpaulo mesh_send_action_meshpeering_open); 591234874Smonthadar ieee80211_send_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 592195618Srpaulo IEEE80211_ACTION_MESHPEERING_CONFIRM, 593195618Srpaulo mesh_send_action_meshpeering_confirm); 594234874Smonthadar ieee80211_send_action_register(IEEE80211_ACTION_CAT_SELF_PROT, 595195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 596195618Srpaulo mesh_send_action_meshpeering_close); 597232479Sadrian ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESH, 598232479Sadrian IEEE80211_ACTION_MESH_LMETRIC, 599232479Sadrian mesh_send_action_meshlmetric); 600246506Smonthadar ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESH, 601246506Smonthadar IEEE80211_ACTION_MESH_GANN, 602246506Smonthadar mesh_send_action_meshgate); 603195618Srpaulo 604195618Srpaulo /* 605195618Srpaulo * Register Airtime Link Metric. 606195618Srpaulo */ 607195618Srpaulo ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); 608195618Srpaulo 609195618Srpaulo} 610195618SrpauloSYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); 611195618Srpaulo 612195618Srpaulovoid 613195618Srpauloieee80211_mesh_attach(struct ieee80211com *ic) 614195618Srpaulo{ 615195618Srpaulo ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; 616195618Srpaulo} 617195618Srpaulo 618195618Srpaulovoid 619195618Srpauloieee80211_mesh_detach(struct ieee80211com *ic) 620195618Srpaulo{ 621195618Srpaulo} 622195618Srpaulo 623195618Srpaulostatic void 624195618Srpaulomesh_vdetach_peers(void *arg, struct ieee80211_node *ni) 625195618Srpaulo{ 626195618Srpaulo struct ieee80211com *ic = ni->ni_ic; 627195618Srpaulo uint16_t args[3]; 628195618Srpaulo 629195618Srpaulo if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { 630195618Srpaulo args[0] = ni->ni_mlpid; 631195618Srpaulo args[1] = ni->ni_mllid; 632195618Srpaulo args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 633195618Srpaulo ieee80211_send_action(ni, 634234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 635195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 636195618Srpaulo args); 637195618Srpaulo } 638195784Srpaulo callout_drain(&ni->ni_mltimer); 639195618Srpaulo /* XXX belongs in hwmp */ 640195618Srpaulo ieee80211_ageq_drain_node(&ic->ic_stageq, 641195618Srpaulo (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); 642195618Srpaulo} 643195618Srpaulo 644195618Srpaulostatic void 645195618Srpaulomesh_vdetach(struct ieee80211vap *vap) 646195618Srpaulo{ 647195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 648195618Srpaulo 649195784Srpaulo callout_drain(&ms->ms_cleantimer); 650195618Srpaulo ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, 651195618Srpaulo NULL); 652195618Srpaulo ieee80211_mesh_rt_flush(vap); 653195618Srpaulo mtx_destroy(&ms->ms_rt_lock); 654195618Srpaulo ms->ms_ppath->mpp_vdetach(vap); 655195618Srpaulo free(vap->iv_mesh, M_80211_VAP); 656195618Srpaulo vap->iv_mesh = NULL; 657195618Srpaulo} 658195618Srpaulo 659195618Srpaulostatic void 660195618Srpaulomesh_vattach(struct ieee80211vap *vap) 661195618Srpaulo{ 662195618Srpaulo struct ieee80211_mesh_state *ms; 663195618Srpaulo vap->iv_newstate = mesh_newstate; 664195618Srpaulo vap->iv_input = mesh_input; 665195618Srpaulo vap->iv_opdetach = mesh_vdetach; 666195618Srpaulo vap->iv_recv_mgmt = mesh_recv_mgmt; 667205277Srpaulo vap->iv_recv_ctl = mesh_recv_ctl; 668195618Srpaulo ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP, 669195618Srpaulo M_NOWAIT | M_ZERO); 670195618Srpaulo if (ms == NULL) { 671195618Srpaulo printf("%s: couldn't alloc MBSS state\n", __func__); 672195784Srpaulo return; 673195618Srpaulo } 674195618Srpaulo vap->iv_mesh = ms; 675195618Srpaulo ms->ms_seq = 0; 676195618Srpaulo ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); 677195618Srpaulo ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; 678246508Smonthadar TAILQ_INIT(&ms->ms_known_gates); 679195618Srpaulo TAILQ_INIT(&ms->ms_routes); 680195618Srpaulo mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF); 681195784Srpaulo callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE); 682246506Smonthadar callout_init(&ms->ms_gatetimer, CALLOUT_MPSAFE); 683246506Smonthadar ms->ms_gateseq = 0; 684195618Srpaulo mesh_select_proto_metric(vap, "AIRTIME"); 685195618Srpaulo KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); 686195618Srpaulo mesh_select_proto_path(vap, "HWMP"); 687195618Srpaulo KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); 688195618Srpaulo ms->ms_ppath->mpp_vattach(vap); 689195618Srpaulo} 690195618Srpaulo 691195618Srpaulo/* 692195618Srpaulo * IEEE80211_M_MBSS vap state machine handler. 693195618Srpaulo */ 694195618Srpaulostatic int 695195618Srpaulomesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 696195618Srpaulo{ 697195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 698195618Srpaulo struct ieee80211com *ic = vap->iv_ic; 699195618Srpaulo struct ieee80211_node *ni; 700195618Srpaulo enum ieee80211_state ostate; 701195618Srpaulo 702195618Srpaulo IEEE80211_LOCK_ASSERT(ic); 703195618Srpaulo 704195618Srpaulo ostate = vap->iv_state; 705195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 706195618Srpaulo __func__, ieee80211_state_name[ostate], 707195618Srpaulo ieee80211_state_name[nstate], arg); 708195618Srpaulo vap->iv_state = nstate; /* state transition */ 709195618Srpaulo if (ostate != IEEE80211_S_SCAN) 710195618Srpaulo ieee80211_cancel_scan(vap); /* background scan */ 711195618Srpaulo ni = vap->iv_bss; /* NB: no reference held */ 712246506Smonthadar if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) { 713195784Srpaulo callout_drain(&ms->ms_cleantimer); 714246506Smonthadar callout_drain(&ms->ms_gatetimer); 715246506Smonthadar } 716195618Srpaulo switch (nstate) { 717195618Srpaulo case IEEE80211_S_INIT: 718195618Srpaulo switch (ostate) { 719195618Srpaulo case IEEE80211_S_SCAN: 720195618Srpaulo ieee80211_cancel_scan(vap); 721195618Srpaulo break; 722195618Srpaulo case IEEE80211_S_CAC: 723195618Srpaulo ieee80211_dfs_cac_stop(vap); 724195618Srpaulo break; 725195618Srpaulo case IEEE80211_S_RUN: 726195618Srpaulo ieee80211_iterate_nodes(&ic->ic_sta, 727195618Srpaulo mesh_vdetach_peers, NULL); 728195618Srpaulo break; 729195618Srpaulo default: 730195618Srpaulo break; 731195618Srpaulo } 732195618Srpaulo if (ostate != IEEE80211_S_INIT) { 733195618Srpaulo /* NB: optimize INIT -> INIT case */ 734195618Srpaulo ieee80211_reset_bss(vap); 735195784Srpaulo ieee80211_mesh_rt_flush(vap); 736195618Srpaulo } 737195618Srpaulo break; 738195618Srpaulo case IEEE80211_S_SCAN: 739195618Srpaulo switch (ostate) { 740195618Srpaulo case IEEE80211_S_INIT: 741195618Srpaulo if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 742195618Srpaulo !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && 743195618Srpaulo ms->ms_idlen != 0) { 744195618Srpaulo /* 745195618Srpaulo * Already have a channel and a mesh ID; bypass 746195618Srpaulo * the scan and startup immediately. 747195618Srpaulo */ 748195618Srpaulo ieee80211_create_ibss(vap, vap->iv_des_chan); 749195618Srpaulo break; 750195618Srpaulo } 751195618Srpaulo /* 752195618Srpaulo * Initiate a scan. We can come here as a result 753195618Srpaulo * of an IEEE80211_IOC_SCAN_REQ too in which case 754195618Srpaulo * the vap will be marked with IEEE80211_FEXT_SCANREQ 755195618Srpaulo * and the scan request parameters will be present 756195618Srpaulo * in iv_scanreq. Otherwise we do the default. 757195618Srpaulo */ 758195618Srpaulo if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 759195618Srpaulo ieee80211_check_scan(vap, 760195618Srpaulo vap->iv_scanreq_flags, 761195618Srpaulo vap->iv_scanreq_duration, 762195618Srpaulo vap->iv_scanreq_mindwell, 763195618Srpaulo vap->iv_scanreq_maxdwell, 764195618Srpaulo vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 765195618Srpaulo vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 766195618Srpaulo } else 767195618Srpaulo ieee80211_check_scan_current(vap); 768195618Srpaulo break; 769195618Srpaulo default: 770195618Srpaulo break; 771195618Srpaulo } 772195618Srpaulo break; 773195618Srpaulo case IEEE80211_S_CAC: 774195618Srpaulo /* 775195618Srpaulo * Start CAC on a DFS channel. We come here when starting 776195618Srpaulo * a bss on a DFS channel (see ieee80211_create_ibss). 777195618Srpaulo */ 778195618Srpaulo ieee80211_dfs_cac_start(vap); 779195618Srpaulo break; 780195618Srpaulo case IEEE80211_S_RUN: 781195618Srpaulo switch (ostate) { 782195618Srpaulo case IEEE80211_S_INIT: 783195618Srpaulo /* 784195618Srpaulo * Already have a channel; bypass the 785195618Srpaulo * scan and startup immediately. 786195618Srpaulo * Note that ieee80211_create_ibss will call 787195618Srpaulo * back to do a RUN->RUN state change. 788195618Srpaulo */ 789195618Srpaulo ieee80211_create_ibss(vap, 790195618Srpaulo ieee80211_ht_adjust_channel(ic, 791195618Srpaulo ic->ic_curchan, vap->iv_flags_ht)); 792195618Srpaulo /* NB: iv_bss is changed on return */ 793195618Srpaulo break; 794195618Srpaulo case IEEE80211_S_CAC: 795195618Srpaulo /* 796195618Srpaulo * NB: This is the normal state change when CAC 797195618Srpaulo * expires and no radar was detected; no need to 798195618Srpaulo * clear the CAC timer as it's already expired. 799195618Srpaulo */ 800195618Srpaulo /* fall thru... */ 801195618Srpaulo case IEEE80211_S_CSA: 802195618Srpaulo#if 0 803195618Srpaulo /* 804195618Srpaulo * Shorten inactivity timer of associated stations 805195618Srpaulo * to weed out sta's that don't follow a CSA. 806195618Srpaulo */ 807195618Srpaulo ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); 808195618Srpaulo#endif 809195618Srpaulo /* 810195618Srpaulo * Update bss node channel to reflect where 811195618Srpaulo * we landed after CSA. 812195618Srpaulo */ 813195618Srpaulo ieee80211_node_set_chan(vap->iv_bss, 814195618Srpaulo ieee80211_ht_adjust_channel(ic, ic->ic_curchan, 815195618Srpaulo ieee80211_htchanflags(vap->iv_bss->ni_chan))); 816195618Srpaulo /* XXX bypass debug msgs */ 817195618Srpaulo break; 818195618Srpaulo case IEEE80211_S_SCAN: 819195618Srpaulo case IEEE80211_S_RUN: 820195618Srpaulo#ifdef IEEE80211_DEBUG 821195618Srpaulo if (ieee80211_msg_debug(vap)) { 822195618Srpaulo struct ieee80211_node *ni = vap->iv_bss; 823195618Srpaulo ieee80211_note(vap, 824195618Srpaulo "synchronized with %s meshid ", 825195618Srpaulo ether_sprintf(ni->ni_meshid)); 826195618Srpaulo ieee80211_print_essid(ni->ni_meshid, 827195618Srpaulo ni->ni_meshidlen); 828195618Srpaulo /* XXX MCS/HT */ 829195618Srpaulo printf(" channel %d\n", 830195618Srpaulo ieee80211_chan2ieee(ic, ic->ic_curchan)); 831195618Srpaulo } 832195618Srpaulo#endif 833195618Srpaulo break; 834195618Srpaulo default: 835195618Srpaulo break; 836195618Srpaulo } 837195618Srpaulo ieee80211_node_authorize(vap->iv_bss); 838195813Ssam callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 839195784Srpaulo mesh_rt_cleanup_cb, vap); 840246506Smonthadar mesh_gatemode_setup(vap); 841195618Srpaulo break; 842195618Srpaulo default: 843195618Srpaulo break; 844195618Srpaulo } 845195618Srpaulo /* NB: ostate not nstate */ 846195618Srpaulo ms->ms_ppath->mpp_newstate(vap, ostate, arg); 847195618Srpaulo return 0; 848195618Srpaulo} 849195618Srpaulo 850195784Srpaulostatic void 851195784Srpaulomesh_rt_cleanup_cb(void *arg) 852195784Srpaulo{ 853195784Srpaulo struct ieee80211vap *vap = arg; 854195784Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 855195784Srpaulo 856195784Srpaulo mesh_rt_flush_invalid(vap); 857195813Ssam callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, 858195784Srpaulo mesh_rt_cleanup_cb, vap); 859195784Srpaulo} 860195784Srpaulo 861246509Smonthadar/* 862246509Smonthadar * Mark a mesh STA as gate and return a pointer to it. 863246509Smonthadar * If this is first time, we create a new gate route. 864246509Smonthadar * Always update the path route to this mesh gate. 865246509Smonthadar */ 866246509Smonthadarstruct ieee80211_mesh_gate_route * 867246509Smonthadarieee80211_mesh_mark_gate(struct ieee80211vap *vap, const uint8_t *addr, 868246509Smonthadar struct ieee80211_mesh_route *rt) 869246509Smonthadar{ 870246509Smonthadar struct ieee80211_mesh_state *ms = vap->iv_mesh; 871246509Smonthadar struct ieee80211_mesh_gate_route *gr = NULL, *next; 872246509Smonthadar int found = 0; 873195784Srpaulo 874246509Smonthadar MESH_RT_LOCK(ms); 875246509Smonthadar TAILQ_FOREACH_SAFE(gr, &ms->ms_known_gates, gr_next, next) { 876246509Smonthadar if (IEEE80211_ADDR_EQ(gr->gr_addr, addr)) { 877246509Smonthadar found = 1; 878246509Smonthadar break; 879246509Smonthadar } 880246509Smonthadar } 881246509Smonthadar 882246509Smonthadar if (!found) { 883246509Smonthadar /* New mesh gate add it to known table. */ 884246509Smonthadar IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, addr, 885246509Smonthadar "%s", "stored new gate information from pro-PREQ."); 886246509Smonthadar gr = malloc(ALIGN(sizeof(struct ieee80211_mesh_gate_route)), 887246509Smonthadar M_80211_MESH_GT_RT, M_NOWAIT | M_ZERO); 888246509Smonthadar IEEE80211_ADDR_COPY(gr->gr_addr, addr); 889246509Smonthadar TAILQ_INSERT_TAIL(&ms->ms_known_gates, gr, gr_next); 890246509Smonthadar } 891246509Smonthadar gr->gr_route = rt; 892246509Smonthadar /* TODO: link from path route to gate route */ 893246509Smonthadar MESH_RT_UNLOCK(ms); 894246509Smonthadar 895246509Smonthadar return gr; 896246509Smonthadar} 897246509Smonthadar 898246509Smonthadar 899195618Srpaulo/* 900195618Srpaulo * Helper function to note the Mesh Peer Link FSM change. 901195618Srpaulo */ 902195618Srpaulostatic void 903195618Srpaulomesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) 904195618Srpaulo{ 905195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 906195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 907195618Srpaulo#ifdef IEEE80211_DEBUG 908195618Srpaulo static const char *meshlinkstates[] = { 909195618Srpaulo [IEEE80211_NODE_MESH_IDLE] = "IDLE", 910195618Srpaulo [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", 911195618Srpaulo [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", 912195618Srpaulo [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", 913195618Srpaulo [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", 914195618Srpaulo [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" 915195618Srpaulo }; 916195618Srpaulo#endif 917195618Srpaulo IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, 918195618Srpaulo ni, "peer link: %s -> %s", 919195618Srpaulo meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); 920195618Srpaulo 921195618Srpaulo /* track neighbor count */ 922195618Srpaulo if (state == IEEE80211_NODE_MESH_ESTABLISHED && 923195618Srpaulo ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 924195618Srpaulo KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); 925195618Srpaulo ms->ms_neighbors++; 926198242Srpaulo ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 927195618Srpaulo } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && 928195618Srpaulo state != IEEE80211_NODE_MESH_ESTABLISHED) { 929195618Srpaulo KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); 930195618Srpaulo ms->ms_neighbors--; 931198242Srpaulo ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); 932195618Srpaulo } 933195618Srpaulo ni->ni_mlstate = state; 934195784Srpaulo switch (state) { 935195784Srpaulo case IEEE80211_NODE_MESH_HOLDING: 936195618Srpaulo ms->ms_ppath->mpp_peerdown(ni); 937195784Srpaulo break; 938195784Srpaulo case IEEE80211_NODE_MESH_ESTABLISHED: 939195784Srpaulo ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); 940195784Srpaulo break; 941195784Srpaulo default: 942195784Srpaulo break; 943195784Srpaulo } 944195618Srpaulo} 945195618Srpaulo 946195618Srpaulo/* 947195618Srpaulo * Helper function to generate a unique local ID required for mesh 948195618Srpaulo * peer establishment. 949195618Srpaulo */ 950195618Srpaulostatic void 951195618Srpaulomesh_checkid(void *arg, struct ieee80211_node *ni) 952195618Srpaulo{ 953195618Srpaulo uint16_t *r = arg; 954195618Srpaulo 955195618Srpaulo if (*r == ni->ni_mllid) 956195618Srpaulo *(uint16_t *)arg = 0; 957195618Srpaulo} 958195618Srpaulo 959195618Srpaulostatic uint32_t 960195618Srpaulomesh_generateid(struct ieee80211vap *vap) 961195618Srpaulo{ 962195618Srpaulo int maxiter = 4; 963195618Srpaulo uint16_t r; 964195618Srpaulo 965195618Srpaulo do { 966195618Srpaulo get_random_bytes(&r, 2); 967195618Srpaulo ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); 968195618Srpaulo maxiter--; 969195618Srpaulo } while (r == 0 && maxiter > 0); 970195618Srpaulo return r; 971195618Srpaulo} 972195618Srpaulo 973195618Srpaulo/* 974195618Srpaulo * Verifies if we already received this packet by checking its 975195618Srpaulo * sequence number. 976195908Srpaulo * Returns 0 if the frame is to be accepted, 1 otherwise. 977195618Srpaulo */ 978195618Srpaulostatic int 979195618Srpaulomesh_checkpseq(struct ieee80211vap *vap, 980195618Srpaulo const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) 981195618Srpaulo{ 982195618Srpaulo struct ieee80211_mesh_route *rt; 983195618Srpaulo 984195618Srpaulo rt = ieee80211_mesh_rt_find(vap, source); 985195618Srpaulo if (rt == NULL) { 986195908Srpaulo rt = ieee80211_mesh_rt_add(vap, source); 987195908Srpaulo if (rt == NULL) { 988195908Srpaulo IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 989195908Srpaulo "%s", "add mcast route failed"); 990195908Srpaulo vap->iv_stats.is_mesh_rtaddfailed++; 991195908Srpaulo return 1; 992195908Srpaulo } 993195784Srpaulo IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, 994195784Srpaulo "add mcast route, mesh seqno %d", seq); 995195908Srpaulo rt->rt_lastmseq = seq; 996195618Srpaulo return 0; 997195618Srpaulo } 998195618Srpaulo if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { 999195618Srpaulo return 1; 1000195618Srpaulo } else { 1001195618Srpaulo rt->rt_lastmseq = seq; 1002195618Srpaulo return 0; 1003195618Srpaulo } 1004195618Srpaulo} 1005195618Srpaulo 1006195618Srpaulo/* 1007195618Srpaulo * Iterate the routing table and locate the next hop. 1008195618Srpaulo */ 1009246512Smonthadarstruct ieee80211_node * 1010246512Smonthadarieee80211_mesh_find_txnode(struct ieee80211vap *vap, 1011195618Srpaulo const uint8_t dest[IEEE80211_ADDR_LEN]) 1012195618Srpaulo{ 1013195618Srpaulo struct ieee80211_mesh_route *rt; 1014195618Srpaulo 1015195618Srpaulo rt = ieee80211_mesh_rt_find(vap, dest); 1016195618Srpaulo if (rt == NULL) 1017195618Srpaulo return NULL; 1018246511Smonthadar if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 1019195784Srpaulo IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 1020246511Smonthadar "%s: !valid, flags 0x%x", __func__, rt->rt_flags); 1021195784Srpaulo /* XXX stat */ 1022195784Srpaulo return NULL; 1023195784Srpaulo } 1024246511Smonthadar if (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY) { 1025246511Smonthadar rt = ieee80211_mesh_rt_find(vap, rt->rt_mesh_gate); 1026246511Smonthadar if (rt == NULL) return NULL; 1027246511Smonthadar if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { 1028246511Smonthadar IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, 1029246511Smonthadar "%s: meshgate !valid, flags 0x%x", __func__, 1030246511Smonthadar rt->rt_flags); 1031246511Smonthadar /* XXX stat */ 1032246511Smonthadar return NULL; 1033246511Smonthadar } 1034246511Smonthadar } 1035195618Srpaulo return ieee80211_find_txnode(vap, rt->rt_nexthop); 1036195618Srpaulo} 1037195618Srpaulo 1038246511Smonthadarstatic void 1039246511Smonthadarmesh_transmit_to_gate(struct ieee80211vap *vap, struct mbuf *m, 1040246511Smonthadar struct ieee80211_mesh_route *rt_gate) 1041246511Smonthadar{ 1042246511Smonthadar struct ifnet *ifp = vap->iv_ifp; 1043246511Smonthadar struct ieee80211com *ic = vap->iv_ic; 1044246511Smonthadar struct ifnet *parent = ic->ic_ifp; 1045246511Smonthadar struct ieee80211_node *ni; 1046246511Smonthadar struct ether_header *eh; 1047246511Smonthadar int error; 1048246511Smonthadar 1049246511Smonthadar eh = mtod(m, struct ether_header *); 1050246512Smonthadar ni = ieee80211_mesh_find_txnode(vap, rt_gate->rt_dest); 1051246511Smonthadar if (ni == NULL) { 1052246511Smonthadar ifp->if_oerrors++; 1053246511Smonthadar m_freem(m); 1054246511Smonthadar return; 1055246511Smonthadar } 1056246511Smonthadar 1057246511Smonthadar if ((ni->ni_flags & IEEE80211_NODE_PWR_MGT) && 1058246511Smonthadar (m->m_flags & M_PWR_SAV) == 0) { 1059246511Smonthadar /* 1060246511Smonthadar * Station in power save mode; pass the frame 1061246511Smonthadar * to the 802.11 layer and continue. We'll get 1062246511Smonthadar * the frame back when the time is right. 1063246511Smonthadar * XXX lose WDS vap linkage? 1064246511Smonthadar */ 1065246511Smonthadar (void) ieee80211_pwrsave(ni, m); 1066246511Smonthadar ieee80211_free_node(ni); 1067246511Smonthadar return; 1068246511Smonthadar } 1069246511Smonthadar 1070246511Smonthadar /* calculate priority so drivers can find the tx queue */ 1071246511Smonthadar if (ieee80211_classify(ni, m)) { 1072246511Smonthadar IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_OUTPUT, 1073246511Smonthadar eh->ether_dhost, NULL, 1074246511Smonthadar "%s", "classification failure"); 1075246511Smonthadar vap->iv_stats.is_tx_classify++; 1076246511Smonthadar ifp->if_oerrors++; 1077246511Smonthadar m_freem(m); 1078246511Smonthadar ieee80211_free_node(ni); 1079246511Smonthadar return; 1080246511Smonthadar } 1081246511Smonthadar /* 1082246511Smonthadar * Stash the node pointer. Note that we do this after 1083246511Smonthadar * any call to ieee80211_dwds_mcast because that code 1084246511Smonthadar * uses any existing value for rcvif to identify the 1085246511Smonthadar * interface it (might have been) received on. 1086246511Smonthadar */ 1087246511Smonthadar m->m_pkthdr.rcvif = (void *)ni; 1088246511Smonthadar 1089246511Smonthadar BPF_MTAP(ifp, m); /* 802.3 tx */ 1090246511Smonthadar 1091246511Smonthadar /* 1092246511Smonthadar * Check if A-MPDU tx aggregation is setup or if we 1093246511Smonthadar * should try to enable it. The sta must be associated 1094246511Smonthadar * with HT and A-MPDU enabled for use. When the policy 1095246511Smonthadar * routine decides we should enable A-MPDU we issue an 1096246511Smonthadar * ADDBA request and wait for a reply. The frame being 1097246511Smonthadar * encapsulated will go out w/o using A-MPDU, or possibly 1098246511Smonthadar * it might be collected by the driver and held/retransmit. 1099246511Smonthadar * The default ic_ampdu_enable routine handles staggering 1100246511Smonthadar * ADDBA requests in case the receiver NAK's us or we are 1101246511Smonthadar * otherwise unable to establish a BA stream. 1102246511Smonthadar */ 1103246511Smonthadar if ((ni->ni_flags & IEEE80211_NODE_AMPDU_TX) && 1104246511Smonthadar (vap->iv_flags_ht & IEEE80211_FHT_AMPDU_TX) && 1105246511Smonthadar (m->m_flags & M_EAPOL) == 0) { 1106246511Smonthadar int tid = WME_AC_TO_TID(M_WME_GETAC(m)); 1107246511Smonthadar struct ieee80211_tx_ampdu *tap = &ni->ni_tx_ampdu[tid]; 1108246511Smonthadar 1109246511Smonthadar ieee80211_txampdu_count_packet(tap); 1110246511Smonthadar if (IEEE80211_AMPDU_RUNNING(tap)) { 1111246511Smonthadar /* 1112246511Smonthadar * Operational, mark frame for aggregation. 1113246511Smonthadar * 1114246511Smonthadar * XXX do tx aggregation here 1115246511Smonthadar */ 1116246511Smonthadar m->m_flags |= M_AMPDU_MPDU; 1117246511Smonthadar } else if (!IEEE80211_AMPDU_REQUESTED(tap) && 1118246511Smonthadar ic->ic_ampdu_enable(ni, tap)) { 1119246511Smonthadar /* 1120246511Smonthadar * Not negotiated yet, request service. 1121246511Smonthadar */ 1122246511Smonthadar ieee80211_ampdu_request(ni, tap); 1123246511Smonthadar /* XXX hold frame for reply? */ 1124246511Smonthadar } 1125246511Smonthadar } 1126246511Smonthadar#ifdef IEEE80211_SUPPORT_SUPERG 1127246511Smonthadar else if (IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF)) { 1128246511Smonthadar m = ieee80211_ff_check(ni, m); 1129246511Smonthadar if (m == NULL) { 1130246511Smonthadar /* NB: any ni ref held on stageq */ 1131246511Smonthadar return; 1132246511Smonthadar } 1133246511Smonthadar } 1134246511Smonthadar#endif /* IEEE80211_SUPPORT_SUPERG */ 1135246511Smonthadar if (__predict_true((vap->iv_caps & IEEE80211_C_8023ENCAP) == 0)) { 1136246511Smonthadar /* 1137246511Smonthadar * Encapsulate the packet in prep for transmission. 1138246511Smonthadar */ 1139246511Smonthadar m = ieee80211_encap(vap, ni, m); 1140246511Smonthadar if (m == NULL) { 1141246511Smonthadar /* NB: stat+msg handled in ieee80211_encap */ 1142246511Smonthadar ieee80211_free_node(ni); 1143246511Smonthadar return; 1144246511Smonthadar } 1145246511Smonthadar } 1146246511Smonthadar error = parent->if_transmit(parent, m); 1147246511Smonthadar if (error != 0) { 1148246511Smonthadar m_freem(m); 1149246511Smonthadar ieee80211_free_node(ni); 1150246511Smonthadar } else { 1151246511Smonthadar ifp->if_opackets++; 1152246511Smonthadar } 1153246511Smonthadar ic->ic_lastdata = ticks; 1154246511Smonthadar} 1155246511Smonthadar 1156195618Srpaulo/* 1157246510Smonthadar * Forward the queued frames to known valid mesh gates. 1158246510Smonthadar * Assume destination to be outside the MBSS (i.e. proxy entry), 1159246510Smonthadar * If no valid mesh gates are known silently discard queued frames. 1160246511Smonthadar * After transmitting frames to all known valid mesh gates, this route 1161246511Smonthadar * will be marked invalid, and a new path discovery will happen in the hopes 1162246511Smonthadar * that (at least) one of the mesh gates have a new proxy entry for us to use. 1163246510Smonthadar */ 1164246510Smonthadarvoid 1165246510Smonthadarieee80211_mesh_forward_to_gates(struct ieee80211vap *vap, 1166246510Smonthadar struct ieee80211_mesh_route *rt_dest) 1167246510Smonthadar{ 1168246510Smonthadar struct ieee80211com *ic = vap->iv_ic; 1169246510Smonthadar struct ieee80211_mesh_state *ms = vap->iv_mesh; 1170246510Smonthadar struct ieee80211_mesh_route *rt_gate; 1171246510Smonthadar struct ieee80211_mesh_gate_route *gr = NULL, *gr_next; 1172246511Smonthadar struct mbuf *m, *mcopy, *next; 1173246510Smonthadar 1174246510Smonthadar KASSERT( rt_dest->rt_flags == IEEE80211_MESHRT_FLAGS_DISCOVER, 1175246510Smonthadar ("Route is not marked with IEEE80211_MESHRT_FLAGS_DISCOVER")); 1176246510Smonthadar 1177246510Smonthadar /* XXX: send to more than one valid mash gate */ 1178246510Smonthadar MESH_RT_LOCK(ms); 1179246511Smonthadar 1180246511Smonthadar m = ieee80211_ageq_remove(&ic->ic_stageq, 1181246511Smonthadar (struct ieee80211_node *)(uintptr_t) 1182246511Smonthadar ieee80211_mac_hash(ic, rt_dest->rt_dest)); 1183246511Smonthadar 1184246510Smonthadar TAILQ_FOREACH_SAFE(gr, &ms->ms_known_gates, gr_next, gr_next) { 1185246510Smonthadar rt_gate = gr->gr_route; 1186246510Smonthadar if (rt_gate == NULL) { 1187246510Smonthadar IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_HWMP, 1188246510Smonthadar rt_dest->rt_dest, 1189246510Smonthadar "mesh gate with no path %6D", 1190246510Smonthadar gr->gr_addr, ":"); 1191246510Smonthadar continue; 1192246510Smonthadar } 1193246511Smonthadar if ((rt_gate->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) 1194246511Smonthadar continue; 1195246511Smonthadar KASSERT(rt_gate->rt_flags & IEEE80211_MESHRT_FLAGS_GATE, 1196246511Smonthadar ("route not marked as a mesh gate")); 1197246511Smonthadar KASSERT((rt_gate->rt_flags & 1198246511Smonthadar IEEE80211_MESHRT_FLAGS_PROXY) == 0, 1199246511Smonthadar ("found mesh gate that is also marked porxy")); 1200246511Smonthadar /* 1201246511Smonthadar * convert route to a proxy route gated by the current 1202246511Smonthadar * mesh gate, this is needed so encap can built data 1203246511Smonthadar * frame with correct address. 1204246511Smonthadar */ 1205246510Smonthadar rt_dest->rt_flags = IEEE80211_MESHRT_FLAGS_PROXY | 1206246510Smonthadar IEEE80211_MESHRT_FLAGS_VALID; 1207246510Smonthadar rt_dest->rt_ext_seq = 1; /* random value */ 1208246510Smonthadar IEEE80211_ADDR_COPY(rt_dest->rt_mesh_gate, rt_gate->rt_dest); 1209246510Smonthadar IEEE80211_ADDR_COPY(rt_dest->rt_nexthop, rt_gate->rt_nexthop); 1210246510Smonthadar rt_dest->rt_metric = rt_gate->rt_metric; 1211246510Smonthadar rt_dest->rt_nhops = rt_gate->rt_nhops; 1212246510Smonthadar ieee80211_mesh_rt_update(rt_dest, ms->ms_ppath->mpp_inact); 1213246510Smonthadar MESH_RT_UNLOCK(ms); 1214246511Smonthadar /* XXX: lock?? */ 1215246511Smonthadar mcopy = m_dup(m, M_NOWAIT); 1216246511Smonthadar for (; mcopy != NULL; mcopy = next) { 1217246511Smonthadar next = mcopy->m_nextpkt; 1218246511Smonthadar mcopy->m_nextpkt = NULL; 1219246511Smonthadar IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_HWMP, 1220246511Smonthadar rt_dest->rt_dest, 1221246511Smonthadar "flush queued frame %p len %d", mcopy, 1222246511Smonthadar mcopy->m_pkthdr.len); 1223246511Smonthadar mesh_transmit_to_gate(vap, mcopy, rt_gate); 1224246510Smonthadar } 1225246510Smonthadar MESH_RT_LOCK(ms); 1226246510Smonthadar } 1227246511Smonthadar rt_dest->rt_flags = 0; /* Mark invalid */ 1228246511Smonthadar m_freem(m); 1229246510Smonthadar MESH_RT_UNLOCK(ms); 1230246510Smonthadar} 1231246510Smonthadar 1232246510Smonthadar/* 1233195618Srpaulo * Forward the specified frame. 1234195618Srpaulo * Decrement the TTL and set TA to our MAC address. 1235195618Srpaulo */ 1236195618Srpaulostatic void 1237195618Srpaulomesh_forward(struct ieee80211vap *vap, struct mbuf *m, 1238195618Srpaulo const struct ieee80211_meshcntl *mc) 1239195618Srpaulo{ 1240195618Srpaulo struct ieee80211com *ic = vap->iv_ic; 1241195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 1242195618Srpaulo struct ifnet *ifp = vap->iv_ifp; 1243195618Srpaulo struct ifnet *parent = ic->ic_ifp; 1244195618Srpaulo const struct ieee80211_frame *wh = 1245195618Srpaulo mtod(m, const struct ieee80211_frame *); 1246195618Srpaulo struct mbuf *mcopy; 1247195618Srpaulo struct ieee80211_meshcntl *mccopy; 1248195618Srpaulo struct ieee80211_frame *whcopy; 1249195618Srpaulo struct ieee80211_node *ni; 1250195618Srpaulo int err; 1251195618Srpaulo 1252234878Smonthadar /* 1253234878Smonthadar * mesh ttl of 1 means we are the last one receving it, 1254234878Smonthadar * according to amendment we decrement and then check if 1255234878Smonthadar * 0, if so we dont forward. 1256234878Smonthadar */ 1257234878Smonthadar if (mc->mc_ttl < 1) { 1258195618Srpaulo IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 1259234878Smonthadar "%s", "frame not fwd'd, ttl 1"); 1260195618Srpaulo vap->iv_stats.is_mesh_fwd_ttl++; 1261195618Srpaulo return; 1262195618Srpaulo } 1263195618Srpaulo if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { 1264195618Srpaulo IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 1265195618Srpaulo "%s", "frame not fwd'd, fwding disabled"); 1266195618Srpaulo vap->iv_stats.is_mesh_fwd_disabled++; 1267195618Srpaulo return; 1268195618Srpaulo } 1269243882Sglebius mcopy = m_dup(m, M_NOWAIT); 1270195618Srpaulo if (mcopy == NULL) { 1271195618Srpaulo IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 1272195618Srpaulo "%s", "frame not fwd'd, cannot dup"); 1273195618Srpaulo vap->iv_stats.is_mesh_fwd_nobuf++; 1274195618Srpaulo ifp->if_oerrors++; 1275195618Srpaulo return; 1276195618Srpaulo } 1277195618Srpaulo mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + 1278195618Srpaulo sizeof(struct ieee80211_meshcntl)); 1279195618Srpaulo if (mcopy == NULL) { 1280195618Srpaulo IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 1281195618Srpaulo "%s", "frame not fwd'd, too short"); 1282195618Srpaulo vap->iv_stats.is_mesh_fwd_tooshort++; 1283195618Srpaulo ifp->if_oerrors++; 1284195618Srpaulo m_freem(mcopy); 1285195618Srpaulo return; 1286195618Srpaulo } 1287195618Srpaulo whcopy = mtod(mcopy, struct ieee80211_frame *); 1288195618Srpaulo mccopy = (struct ieee80211_meshcntl *) 1289195618Srpaulo (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); 1290195618Srpaulo /* XXX clear other bits? */ 1291195618Srpaulo whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; 1292195618Srpaulo IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); 1293195618Srpaulo if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1294195618Srpaulo ni = ieee80211_ref_node(vap->iv_bss); 1295195618Srpaulo mcopy->m_flags |= M_MCAST; 1296195618Srpaulo } else { 1297246512Smonthadar ni = ieee80211_mesh_find_txnode(vap, whcopy->i_addr3); 1298195618Srpaulo if (ni == NULL) { 1299234878Smonthadar /* 1300234878Smonthadar * [Optional] any of the following three actions: 1301234878Smonthadar * o silently discard 1302234878Smonthadar * o trigger a path discovery 1303234890Smonthadar * o inform TA that meshDA is unknown. 1304234878Smonthadar */ 1305195618Srpaulo IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, 1306195618Srpaulo "%s", "frame not fwd'd, no path"); 1307234890Smonthadar ms->ms_ppath->mpp_senderror(vap, whcopy->i_addr3, NULL, 1308234890Smonthadar IEEE80211_REASON_MESH_PERR_NO_FI); 1309195618Srpaulo vap->iv_stats.is_mesh_fwd_nopath++; 1310195618Srpaulo m_freem(mcopy); 1311195618Srpaulo return; 1312195618Srpaulo } 1313195618Srpaulo IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); 1314195618Srpaulo } 1315195618Srpaulo KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); 1316195618Srpaulo mccopy->mc_ttl--; 1317195618Srpaulo 1318195618Srpaulo /* XXX calculate priority so drivers can find the tx queue */ 1319195618Srpaulo M_WME_SETAC(mcopy, WME_AC_BE); 1320195618Srpaulo 1321195618Srpaulo /* XXX do we know m_nextpkt is NULL? */ 1322195618Srpaulo mcopy->m_pkthdr.rcvif = (void *) ni; 1323195618Srpaulo err = parent->if_transmit(parent, mcopy); 1324195618Srpaulo if (err != 0) { 1325195618Srpaulo /* NB: IFQ_HANDOFF reclaims mbuf */ 1326195618Srpaulo ieee80211_free_node(ni); 1327195618Srpaulo } else { 1328195618Srpaulo ifp->if_opackets++; 1329195618Srpaulo } 1330195618Srpaulo} 1331195618Srpaulo 1332195784Srpaulostatic struct mbuf * 1333195784Srpaulomesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) 1334195784Srpaulo{ 1335234878Smonthadar#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) 1336234878Smonthadar#define MC01(mc) ((const struct ieee80211_meshcntl_ae01 *)mc) 1337195784Srpaulo uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + 1338234878Smonthadar sizeof(struct ieee80211_meshcntl_ae10)]; 1339195784Srpaulo const struct ieee80211_qosframe_addr4 *wh; 1340195784Srpaulo const struct ieee80211_meshcntl_ae10 *mc; 1341195784Srpaulo struct ether_header *eh; 1342195784Srpaulo struct llc *llc; 1343195784Srpaulo int ae; 1344195784Srpaulo 1345195784Srpaulo if (m->m_len < hdrlen + sizeof(*llc) && 1346195784Srpaulo (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { 1347195784Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, 1348195784Srpaulo "discard data frame: %s", "m_pullup failed"); 1349195784Srpaulo vap->iv_stats.is_rx_tooshort++; 1350195784Srpaulo return NULL; 1351195784Srpaulo } 1352195784Srpaulo memcpy(b, mtod(m, caddr_t), hdrlen); 1353195784Srpaulo wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; 1354195784Srpaulo mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; 1355195784Srpaulo KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || 1356195784Srpaulo WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, 1357195784Srpaulo ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1358195784Srpaulo 1359195784Srpaulo llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); 1360195784Srpaulo if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && 1361195784Srpaulo llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && 1362195784Srpaulo llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && 1363195784Srpaulo /* NB: preserve AppleTalk frames that have a native SNAP hdr */ 1364195784Srpaulo !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || 1365195784Srpaulo llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { 1366195784Srpaulo m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); 1367195784Srpaulo llc = NULL; 1368195784Srpaulo } else { 1369195784Srpaulo m_adj(m, hdrlen - sizeof(*eh)); 1370195784Srpaulo } 1371195784Srpaulo eh = mtod(m, struct ether_header *); 1372234878Smonthadar ae = mc->mc_flags & IEEE80211_MESH_AE_MASK; 1373195784Srpaulo if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { 1374195784Srpaulo IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); 1375234878Smonthadar if (ae == IEEE80211_MESH_AE_00) { 1376195784Srpaulo IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); 1377234878Smonthadar } else if (ae == IEEE80211_MESH_AE_01) { 1378234878Smonthadar IEEE80211_ADDR_COPY(eh->ether_shost, 1379234878Smonthadar MC01(mc)->mc_addr4); 1380195784Srpaulo } else { 1381195784Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1382195784Srpaulo (const struct ieee80211_frame *)wh, NULL, 1383195784Srpaulo "bad AE %d", ae); 1384195784Srpaulo vap->iv_stats.is_mesh_badae++; 1385195784Srpaulo m_freem(m); 1386195784Srpaulo return NULL; 1387195784Srpaulo } 1388195784Srpaulo } else { 1389234878Smonthadar if (ae == IEEE80211_MESH_AE_00) { 1390195784Srpaulo IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); 1391195784Srpaulo IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); 1392234878Smonthadar } else if (ae == IEEE80211_MESH_AE_10) { 1393234878Smonthadar IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr5); 1394234878Smonthadar IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr6); 1395195784Srpaulo } else { 1396195784Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1397195784Srpaulo (const struct ieee80211_frame *)wh, NULL, 1398195784Srpaulo "bad AE %d", ae); 1399195784Srpaulo vap->iv_stats.is_mesh_badae++; 1400195784Srpaulo m_freem(m); 1401195784Srpaulo return NULL; 1402195784Srpaulo } 1403195784Srpaulo } 1404246710Sglebius#ifndef __NO_STRICT_ALIGNMENT 1405195784Srpaulo if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { 1406195784Srpaulo m = ieee80211_realign(vap, m, sizeof(*eh)); 1407195784Srpaulo if (m == NULL) 1408195784Srpaulo return NULL; 1409195784Srpaulo } 1410246710Sglebius#endif /* !__NO_STRICT_ALIGNMENT */ 1411195784Srpaulo if (llc != NULL) { 1412195784Srpaulo eh = mtod(m, struct ether_header *); 1413195784Srpaulo eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); 1414195784Srpaulo } 1415195784Srpaulo return m; 1416234878Smonthadar#undef WDIR 1417234878Smonthadar#undef MC01 1418195784Srpaulo} 1419195784Srpaulo 1420195784Srpaulo/* 1421195784Srpaulo * Return non-zero if the unicast mesh data frame should be processed 1422195784Srpaulo * locally. Frames that are not proxy'd have our address, otherwise 1423195784Srpaulo * we need to consult the routing table to look for a proxy entry. 1424195784Srpaulo */ 1425195784Srpaulostatic __inline int 1426195784Srpaulomesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, 1427195784Srpaulo const struct ieee80211_meshcntl *mc) 1428195784Srpaulo{ 1429195784Srpaulo int ae = mc->mc_flags & 3; 1430195784Srpaulo 1431195784Srpaulo KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, 1432195784Srpaulo ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); 1433234878Smonthadar KASSERT(ae == IEEE80211_MESH_AE_00 || ae == IEEE80211_MESH_AE_10, 1434234878Smonthadar ("bad AE %d", ae)); 1435234878Smonthadar if (ae == IEEE80211_MESH_AE_10) { /* ucast w/ proxy */ 1436195784Srpaulo const struct ieee80211_meshcntl_ae10 *mc10 = 1437195784Srpaulo (const struct ieee80211_meshcntl_ae10 *) mc; 1438195784Srpaulo struct ieee80211_mesh_route *rt = 1439234878Smonthadar ieee80211_mesh_rt_find(vap, mc10->mc_addr5); 1440195784Srpaulo /* check for proxy route to ourself */ 1441195784Srpaulo return (rt != NULL && 1442195784Srpaulo (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); 1443195784Srpaulo } else /* ucast w/o proxy */ 1444195784Srpaulo return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 1445195784Srpaulo} 1446195784Srpaulo 1447234878Smonthadar/* 1448234878Smonthadar * Verifies transmitter, updates lifetime, precursor list and forwards data. 1449234878Smonthadar * > 0 means we have forwarded data and no need to process locally 1450234878Smonthadar * == 0 means we want to process locally (and we may have forwarded data 1451234878Smonthadar * < 0 means there was an error and data should be discarded 1452234878Smonthadar */ 1453195618Srpaulostatic int 1454234878Smonthadarmesh_recv_indiv_data_to_fwrd(struct ieee80211vap *vap, struct mbuf *m, 1455234878Smonthadar struct ieee80211_frame *wh, const struct ieee80211_meshcntl *mc) 1456234878Smonthadar{ 1457234879Smonthadar struct ieee80211_qosframe_addr4 *qwh; 1458234879Smonthadar struct ieee80211_mesh_state *ms = vap->iv_mesh; 1459234879Smonthadar struct ieee80211_mesh_route *rt_meshda, *rt_meshsa; 1460234878Smonthadar 1461234879Smonthadar qwh = (struct ieee80211_qosframe_addr4 *)wh; 1462234879Smonthadar 1463234878Smonthadar /* 1464234878Smonthadar * TODO: 1465234878Smonthadar * o verify addr2 is a legitimate transmitter 1466234878Smonthadar * o lifetime of precursor of addr3 (addr2) is max(init, curr) 1467234878Smonthadar * o lifetime of precursor of addr4 (nexthop) is max(init, curr) 1468234878Smonthadar */ 1469234878Smonthadar 1470234879Smonthadar /* set lifetime of addr3 (meshDA) to initial value */ 1471234879Smonthadar rt_meshda = ieee80211_mesh_rt_find(vap, qwh->i_addr3); 1472234880Smonthadar if (rt_meshda == NULL) { 1473234880Smonthadar IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, qwh->i_addr2, 1474234880Smonthadar "no route to meshDA(%6D)", qwh->i_addr3, ":"); 1475234880Smonthadar /* 1476234880Smonthadar * [Optional] any of the following three actions: 1477234880Smonthadar * o silently discard [X] 1478234880Smonthadar * o trigger a path discovery [ ] 1479234880Smonthadar * o inform TA that meshDA is unknown. [ ] 1480234880Smonthadar */ 1481234880Smonthadar /* XXX: stats */ 1482234880Smonthadar return (-1); 1483234880Smonthadar } 1484234880Smonthadar 1485234879Smonthadar ieee80211_mesh_rt_update(rt_meshda, ticks_to_msecs( 1486234879Smonthadar ms->ms_ppath->mpp_inact)); 1487234879Smonthadar 1488234879Smonthadar /* set lifetime of addr4 (meshSA) to initial value */ 1489234879Smonthadar rt_meshsa = ieee80211_mesh_rt_find(vap, qwh->i_addr4); 1490234879Smonthadar KASSERT(rt_meshsa != NULL, ("no route")); 1491234879Smonthadar ieee80211_mesh_rt_update(rt_meshsa, ticks_to_msecs( 1492234879Smonthadar ms->ms_ppath->mpp_inact)); 1493234879Smonthadar 1494234878Smonthadar mesh_forward(vap, m, mc); 1495234878Smonthadar return (1); /* dont process locally */ 1496234878Smonthadar} 1497234878Smonthadar 1498234878Smonthadar/* 1499234878Smonthadar * Verifies transmitter, updates lifetime, precursor list and process data 1500240521Seadler * locally, if data is proxy with AE = 10 it could mean data should go 1501234878Smonthadar * on another mesh path or data should be forwarded to the DS. 1502234878Smonthadar * 1503234878Smonthadar * > 0 means we have forwarded data and no need to process locally 1504234878Smonthadar * == 0 means we want to process locally (and we may have forwarded data 1505234878Smonthadar * < 0 means there was an error and data should be discarded 1506234878Smonthadar */ 1507234878Smonthadarstatic int 1508234878Smonthadarmesh_recv_indiv_data_to_me(struct ieee80211vap *vap, struct mbuf *m, 1509234878Smonthadar struct ieee80211_frame *wh, const struct ieee80211_meshcntl *mc) 1510234878Smonthadar{ 1511234878Smonthadar struct ieee80211_qosframe_addr4 *qwh; 1512234878Smonthadar const struct ieee80211_meshcntl_ae10 *mc10; 1513234879Smonthadar struct ieee80211_mesh_state *ms = vap->iv_mesh; 1514234878Smonthadar struct ieee80211_mesh_route *rt; 1515234878Smonthadar int ae; 1516234878Smonthadar 1517234878Smonthadar qwh = (struct ieee80211_qosframe_addr4 *)wh; 1518234878Smonthadar mc10 = (const struct ieee80211_meshcntl_ae10 *)mc; 1519234878Smonthadar 1520234878Smonthadar /* 1521234878Smonthadar * TODO: 1522234878Smonthadar * o verify addr2 is a legitimate transmitter 1523234878Smonthadar * o lifetime of precursor entry is max(init, curr) 1524234878Smonthadar */ 1525234878Smonthadar 1526234879Smonthadar /* set lifetime of addr4 (meshSA) to initial value */ 1527234879Smonthadar rt = ieee80211_mesh_rt_find(vap, qwh->i_addr4); 1528234879Smonthadar KASSERT(rt != NULL, ("no route")); 1529234879Smonthadar ieee80211_mesh_rt_update(rt, ticks_to_msecs(ms->ms_ppath->mpp_inact)); 1530234879Smonthadar rt = NULL; 1531234879Smonthadar 1532234878Smonthadar ae = mc10->mc_flags & IEEE80211_MESH_AE_MASK; 1533234878Smonthadar KASSERT(ae == IEEE80211_MESH_AE_00 || 1534234878Smonthadar ae == IEEE80211_MESH_AE_10, ("bad AE %d", ae)); 1535234878Smonthadar if (ae == IEEE80211_MESH_AE_10) { 1536234878Smonthadar if (IEEE80211_ADDR_EQ(mc10->mc_addr5, qwh->i_addr3)) { 1537234878Smonthadar return (0); /* process locally */ 1538234878Smonthadar } 1539234878Smonthadar 1540234878Smonthadar rt = ieee80211_mesh_rt_find(vap, mc10->mc_addr5); 1541234878Smonthadar if (rt != NULL && 1542234878Smonthadar (rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) && 1543234878Smonthadar (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY) == 0) { 1544234878Smonthadar /* 1545234878Smonthadar * Forward on another mesh-path, according to 1546234878Smonthadar * amendment as specified in 9.32.4.1 1547234878Smonthadar */ 1548234878Smonthadar IEEE80211_ADDR_COPY(qwh->i_addr3, mc10->mc_addr5); 1549234878Smonthadar mesh_forward(vap, m, 1550234878Smonthadar (const struct ieee80211_meshcntl *)mc10); 1551234878Smonthadar return (1); /* dont process locally */ 1552234878Smonthadar } 1553234878Smonthadar /* 1554234878Smonthadar * All other cases: forward of MSDUs from the MBSS to DS indiv. 1555234878Smonthadar * addressed according to 13.11.3.2. 1556234878Smonthadar */ 1557246499Smonthadar IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, qwh->i_addr2, 1558246499Smonthadar "forward frame to DS, SA(%6D) DA(%6D)", 1559246499Smonthadar mc10->mc_addr6, ":", mc10->mc_addr5, ":"); 1560234878Smonthadar } 1561234878Smonthadar return (0); /* process locally */ 1562234878Smonthadar} 1563234878Smonthadar 1564234878Smonthadar/* 1565234878Smonthadar * Try to forward the group addressed data on to other mesh STAs, and 1566234878Smonthadar * also to the DS. 1567234878Smonthadar * 1568234878Smonthadar * > 0 means we have forwarded data and no need to process locally 1569234878Smonthadar * == 0 means we want to process locally (and we may have forwarded data 1570234878Smonthadar * < 0 means there was an error and data should be discarded 1571234878Smonthadar */ 1572234878Smonthadarstatic int 1573234878Smonthadarmesh_recv_group_data(struct ieee80211vap *vap, struct mbuf *m, 1574234878Smonthadar struct ieee80211_frame *wh, const struct ieee80211_meshcntl *mc) 1575234878Smonthadar{ 1576234878Smonthadar#define MC01(mc) ((const struct ieee80211_meshcntl_ae01 *)mc) 1577234878Smonthadar struct ieee80211_mesh_state *ms = vap->iv_mesh; 1578234878Smonthadar 1579234878Smonthadar mesh_forward(vap, m, mc); 1580234878Smonthadar 1581234878Smonthadar if(mc->mc_ttl > 0) { 1582234878Smonthadar if (mc->mc_flags & IEEE80211_MESH_AE_01) { 1583234878Smonthadar /* 1584234878Smonthadar * Forward of MSDUs from the MBSS to DS group addressed 1585234878Smonthadar * (according to 13.11.3.2) 1586234878Smonthadar * This happens by delivering the packet, and a bridge 1587234878Smonthadar * will sent it on another port member. 1588234878Smonthadar */ 1589234892Smonthadar if (ms->ms_flags & IEEE80211_MESHFLAGS_GATE && 1590234878Smonthadar ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 1591234878Smonthadar IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, 1592234878Smonthadar MC01(mc)->mc_addr4, "%s", 1593234878Smonthadar "forward from MBSS to the DS"); 1594234878Smonthadar } 1595234878Smonthadar } 1596234878Smonthadar return (0); /* process locally */ 1597234878Smonthadar#undef MC01 1598234878Smonthadar} 1599234878Smonthadar 1600234878Smonthadarstatic int 1601195618Srpaulomesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 1602195618Srpaulo{ 1603195618Srpaulo#define HAS_SEQ(type) ((type & 0x4) == 0) 1604234878Smonthadar#define MC01(mc) ((const struct ieee80211_meshcntl_ae01 *)mc) 1605234878Smonthadar#define MC10(mc) ((const struct ieee80211_meshcntl_ae10 *)mc) 1606195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 1607195618Srpaulo struct ieee80211com *ic = ni->ni_ic; 1608195618Srpaulo struct ifnet *ifp = vap->iv_ifp; 1609195618Srpaulo struct ieee80211_frame *wh; 1610195618Srpaulo const struct ieee80211_meshcntl *mc; 1611234878Smonthadar int hdrspace, meshdrlen, need_tap, error; 1612234878Smonthadar uint8_t dir, type, subtype, ae; 1613195618Srpaulo uint32_t seq; 1614234878Smonthadar const uint8_t *addr; 1615234878Smonthadar uint8_t qos[2]; 1616195618Srpaulo ieee80211_seq rxseq; 1617195618Srpaulo 1618195618Srpaulo KASSERT(ni != NULL, ("null node")); 1619195618Srpaulo ni->ni_inact = ni->ni_inact_reload; 1620195618Srpaulo 1621195618Srpaulo need_tap = 1; /* mbuf need to be tapped. */ 1622195618Srpaulo type = -1; /* undefined */ 1623195618Srpaulo 1624195618Srpaulo if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 1625195618Srpaulo IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1626195618Srpaulo ni->ni_macaddr, NULL, 1627195618Srpaulo "too short (1): len %u", m->m_pkthdr.len); 1628195618Srpaulo vap->iv_stats.is_rx_tooshort++; 1629195618Srpaulo goto out; 1630195618Srpaulo } 1631195618Srpaulo /* 1632195618Srpaulo * Bit of a cheat here, we use a pointer for a 3-address 1633195618Srpaulo * frame format but don't reference fields past outside 1634195618Srpaulo * ieee80211_frame_min w/o first validating the data is 1635195618Srpaulo * present. 1636195618Srpaulo */ 1637195618Srpaulo wh = mtod(m, struct ieee80211_frame *); 1638195618Srpaulo 1639195618Srpaulo if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 1640195618Srpaulo IEEE80211_FC0_VERSION_0) { 1641195618Srpaulo IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1642195618Srpaulo ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); 1643195618Srpaulo vap->iv_stats.is_rx_badversion++; 1644195618Srpaulo goto err; 1645195618Srpaulo } 1646195618Srpaulo dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 1647195618Srpaulo type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1648195618Srpaulo subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1649195618Srpaulo if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1650195618Srpaulo IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 1651195618Srpaulo ni->ni_noise = nf; 1652195618Srpaulo if (HAS_SEQ(type)) { 1653195618Srpaulo uint8_t tid = ieee80211_gettid(wh); 1654195618Srpaulo 1655195618Srpaulo if (IEEE80211_QOS_HAS_SEQ(wh) && 1656195618Srpaulo TID_TO_WME_AC(tid) >= WME_AC_VI) 1657195618Srpaulo ic->ic_wme.wme_hipri_traffic++; 1658195618Srpaulo rxseq = le16toh(*(uint16_t *)wh->i_seq); 1659221418Sadrian if (! ieee80211_check_rxseq(ni, wh)) { 1660195618Srpaulo /* duplicate, discard */ 1661195618Srpaulo IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1662195618Srpaulo wh->i_addr1, "duplicate", 1663195618Srpaulo "seqno <%u,%u> fragno <%u,%u> tid %u", 1664195618Srpaulo rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 1665195618Srpaulo ni->ni_rxseqs[tid] >> 1666195618Srpaulo IEEE80211_SEQ_SEQ_SHIFT, 1667195618Srpaulo rxseq & IEEE80211_SEQ_FRAG_MASK, 1668195618Srpaulo ni->ni_rxseqs[tid] & 1669195618Srpaulo IEEE80211_SEQ_FRAG_MASK, 1670195618Srpaulo tid); 1671195618Srpaulo vap->iv_stats.is_rx_dup++; 1672195618Srpaulo IEEE80211_NODE_STAT(ni, rx_dup); 1673195618Srpaulo goto out; 1674195618Srpaulo } 1675195618Srpaulo ni->ni_rxseqs[tid] = rxseq; 1676195618Srpaulo } 1677195618Srpaulo } 1678195618Srpaulo#ifdef IEEE80211_DEBUG 1679195618Srpaulo /* 1680195618Srpaulo * It's easier, but too expensive, to simulate different mesh 1681195618Srpaulo * topologies by consulting the ACL policy very early, so do this 1682195618Srpaulo * only under DEBUG. 1683195618Srpaulo * 1684195618Srpaulo * NB: this check is also done upon peering link initiation. 1685195618Srpaulo */ 1686228622Sbschmidt if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { 1687195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 1688195618Srpaulo wh, NULL, "%s", "disallowed by ACL"); 1689195618Srpaulo vap->iv_stats.is_rx_acl++; 1690195618Srpaulo goto out; 1691195618Srpaulo } 1692195618Srpaulo#endif 1693195618Srpaulo switch (type) { 1694195618Srpaulo case IEEE80211_FC0_TYPE_DATA: 1695195618Srpaulo if (ni == vap->iv_bss) 1696195618Srpaulo goto out; 1697195618Srpaulo if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 1698195618Srpaulo IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1699195618Srpaulo ni->ni_macaddr, NULL, 1700195618Srpaulo "peer link not yet established (%d)", 1701195618Srpaulo ni->ni_mlstate); 1702195618Srpaulo vap->iv_stats.is_mesh_nolink++; 1703195618Srpaulo goto out; 1704234878Smonthadar } 1705195618Srpaulo if (dir != IEEE80211_FC1_DIR_FROMDS && 1706195618Srpaulo dir != IEEE80211_FC1_DIR_DSTODS) { 1707195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1708195618Srpaulo wh, "data", "incorrect dir 0x%x", dir); 1709195618Srpaulo vap->iv_stats.is_rx_wrongdir++; 1710195618Srpaulo goto err; 1711195618Srpaulo } 1712232480Sadrian 1713232480Sadrian /* All Mesh data frames are QoS subtype */ 1714232480Sadrian if (!HAS_SEQ(type)) { 1715232480Sadrian IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1716232480Sadrian wh, "data", "incorrect subtype 0x%x", subtype); 1717232480Sadrian vap->iv_stats.is_rx_badsubtype++; 1718232480Sadrian goto err; 1719232480Sadrian } 1720232480Sadrian 1721232480Sadrian /* 1722232480Sadrian * Next up, any fragmentation. 1723232480Sadrian * XXX: we defrag before we even try to forward, 1724232480Sadrian * Mesh Control field is not present in sub-sequent 1725232480Sadrian * fragmented frames. This is in contrast to Draft 4.0. 1726232480Sadrian */ 1727232480Sadrian hdrspace = ieee80211_hdrspace(ic, wh); 1728232480Sadrian if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1729232480Sadrian m = ieee80211_defrag(ni, m, hdrspace); 1730232480Sadrian if (m == NULL) { 1731232480Sadrian /* Fragment dropped or frame not complete yet */ 1732232480Sadrian goto out; 1733232480Sadrian } 1734232480Sadrian } 1735232480Sadrian wh = mtod(m, struct ieee80211_frame *); /* NB: after defrag */ 1736232480Sadrian 1737232480Sadrian /* 1738232480Sadrian * Now we have a complete Mesh Data frame. 1739232480Sadrian */ 1740232480Sadrian 1741232480Sadrian /* 1742232480Sadrian * Only fromDStoDS data frames use 4 address qos frames 1743232480Sadrian * as specified in amendment. Otherwise addr4 is located 1744232480Sadrian * in the Mesh Control field and a 3 address qos frame 1745232480Sadrian * is used. 1746232480Sadrian */ 1747232480Sadrian if (IEEE80211_IS_DSTODS(wh)) 1748232480Sadrian *(uint16_t *)qos = *(uint16_t *) 1749232480Sadrian ((struct ieee80211_qosframe_addr4 *)wh)->i_qos; 1750232480Sadrian else 1751232480Sadrian *(uint16_t *)qos = *(uint16_t *) 1752232480Sadrian ((struct ieee80211_qosframe *)wh)->i_qos; 1753232480Sadrian 1754232480Sadrian /* 1755232480Sadrian * NB: The mesh STA sets the Mesh Control Present 1756232480Sadrian * subfield to 1 in the Mesh Data frame containing 1757232480Sadrian * an unfragmented MSDU, an A-MSDU, or the first 1758232480Sadrian * fragment of an MSDU. 1759232480Sadrian * After defrag it should always be present. 1760232480Sadrian */ 1761232480Sadrian if (!(qos[1] & IEEE80211_QOS_MC)) { 1762232480Sadrian IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 1763232480Sadrian ni->ni_macaddr, NULL, 1764232480Sadrian "%s", "Mesh control field not present"); 1765232480Sadrian vap->iv_stats.is_rx_elem_missing++; /* XXX: kinda */ 1766232480Sadrian goto err; 1767232480Sadrian } 1768232480Sadrian 1769195618Srpaulo /* pull up enough to get to the mesh control */ 1770195618Srpaulo if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && 1771195618Srpaulo (m = m_pullup(m, hdrspace + 1772195618Srpaulo sizeof(struct ieee80211_meshcntl))) == NULL) { 1773195618Srpaulo IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1774195618Srpaulo ni->ni_macaddr, NULL, 1775195618Srpaulo "data too short: expecting %u", hdrspace); 1776195618Srpaulo vap->iv_stats.is_rx_tooshort++; 1777195618Srpaulo goto out; /* XXX */ 1778195618Srpaulo } 1779195618Srpaulo /* 1780195618Srpaulo * Now calculate the full extent of the headers. Note 1781195784Srpaulo * mesh_decap will pull up anything we didn't get 1782195618Srpaulo * above when it strips the 802.11 headers. 1783195618Srpaulo */ 1784195618Srpaulo mc = (const struct ieee80211_meshcntl *) 1785195618Srpaulo (mtod(m, const uint8_t *) + hdrspace); 1786234878Smonthadar ae = mc->mc_flags & IEEE80211_MESH_AE_MASK; 1787195784Srpaulo meshdrlen = sizeof(struct ieee80211_meshcntl) + 1788234878Smonthadar ae * IEEE80211_ADDR_LEN; 1789195784Srpaulo hdrspace += meshdrlen; 1790234878Smonthadar 1791234878Smonthadar /* pull complete hdrspace = ieee80211_hdrspace + meshcontrol */ 1792234878Smonthadar if ((meshdrlen > sizeof(struct ieee80211_meshcntl)) && 1793234878Smonthadar (m->m_len < hdrspace) && 1794234878Smonthadar ((m = m_pullup(m, hdrspace)) == NULL)) { 1795234878Smonthadar IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1796234878Smonthadar ni->ni_macaddr, NULL, 1797234878Smonthadar "data too short: expecting %u", hdrspace); 1798234878Smonthadar vap->iv_stats.is_rx_tooshort++; 1799234878Smonthadar goto out; /* XXX */ 1800234878Smonthadar } 1801234878Smonthadar /* XXX: are we sure there is no reallocating after m_pullup? */ 1802234878Smonthadar 1803195618Srpaulo seq = LE_READ_4(mc->mc_seq); 1804195618Srpaulo if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1805195618Srpaulo addr = wh->i_addr3; 1806234878Smonthadar else if (ae == IEEE80211_MESH_AE_01) 1807234878Smonthadar addr = MC01(mc)->mc_addr4; 1808195618Srpaulo else 1809195618Srpaulo addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; 1810195618Srpaulo if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { 1811195618Srpaulo IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1812195618Srpaulo addr, "data", "%s", "not to me"); 1813195618Srpaulo vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ 1814195618Srpaulo goto out; 1815195618Srpaulo } 1816195618Srpaulo if (mesh_checkpseq(vap, addr, seq) != 0) { 1817195618Srpaulo vap->iv_stats.is_rx_dup++; 1818195618Srpaulo goto out; 1819195618Srpaulo } 1820195618Srpaulo 1821234878Smonthadar /* This code "routes" the frame to the right control path */ 1822234878Smonthadar if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1823234878Smonthadar if (IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr3)) 1824234878Smonthadar error = 1825234878Smonthadar mesh_recv_indiv_data_to_me(vap, m, wh, mc); 1826234878Smonthadar else if (IEEE80211_IS_MULTICAST(wh->i_addr3)) 1827234878Smonthadar error = mesh_recv_group_data(vap, m, wh, mc); 1828234878Smonthadar else 1829234878Smonthadar error = mesh_recv_indiv_data_to_fwrd(vap, m, 1830234878Smonthadar wh, mc); 1831234878Smonthadar } else 1832234878Smonthadar error = mesh_recv_group_data(vap, m, wh, mc); 1833234878Smonthadar if (error < 0) 1834234878Smonthadar goto err; 1835234878Smonthadar else if (error > 0) 1836234878Smonthadar goto out; 1837195618Srpaulo 1838195618Srpaulo if (ieee80211_radiotap_active_vap(vap)) 1839195618Srpaulo ieee80211_radiotap_rx(vap, m); 1840195618Srpaulo need_tap = 0; 1841195618Srpaulo 1842195618Srpaulo /* 1843195618Srpaulo * Finally, strip the 802.11 header. 1844195618Srpaulo */ 1845195784Srpaulo m = mesh_decap(vap, m, hdrspace, meshdrlen); 1846195618Srpaulo if (m == NULL) { 1847195618Srpaulo /* XXX mask bit to check for both */ 1848195618Srpaulo /* don't count Null data frames as errors */ 1849195618Srpaulo if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 1850195618Srpaulo subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 1851195618Srpaulo goto out; 1852195618Srpaulo IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 1853195618Srpaulo ni->ni_macaddr, "data", "%s", "decap error"); 1854195618Srpaulo vap->iv_stats.is_rx_decap++; 1855195618Srpaulo IEEE80211_NODE_STAT(ni, rx_decap); 1856195618Srpaulo goto err; 1857195618Srpaulo } 1858232480Sadrian if (qos[0] & IEEE80211_QOS_AMSDU) { 1859195618Srpaulo m = ieee80211_decap_amsdu(ni, m); 1860195618Srpaulo if (m == NULL) 1861195618Srpaulo return IEEE80211_FC0_TYPE_DATA; 1862195784Srpaulo } 1863195618Srpaulo ieee80211_deliver_data(vap, ni, m); 1864195618Srpaulo return type; 1865195618Srpaulo case IEEE80211_FC0_TYPE_MGT: 1866195618Srpaulo vap->iv_stats.is_rx_mgmt++; 1867195618Srpaulo IEEE80211_NODE_STAT(ni, rx_mgmt); 1868195618Srpaulo if (dir != IEEE80211_FC1_DIR_NODS) { 1869195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1870195618Srpaulo wh, "mgt", "incorrect dir 0x%x", dir); 1871195618Srpaulo vap->iv_stats.is_rx_wrongdir++; 1872195618Srpaulo goto err; 1873195618Srpaulo } 1874195618Srpaulo if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 1875195618Srpaulo IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 1876195618Srpaulo ni->ni_macaddr, "mgt", "too short: len %u", 1877195618Srpaulo m->m_pkthdr.len); 1878195618Srpaulo vap->iv_stats.is_rx_tooshort++; 1879195618Srpaulo goto out; 1880195618Srpaulo } 1881195618Srpaulo#ifdef IEEE80211_DEBUG 1882195618Srpaulo if ((ieee80211_msg_debug(vap) && 1883195618Srpaulo (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || 1884195618Srpaulo ieee80211_msg_dumppkts(vap)) { 1885195618Srpaulo if_printf(ifp, "received %s from %s rssi %d\n", 1886195618Srpaulo ieee80211_mgt_subtype_name[subtype >> 1887195618Srpaulo IEEE80211_FC0_SUBTYPE_SHIFT], 1888195618Srpaulo ether_sprintf(wh->i_addr2), rssi); 1889195618Srpaulo } 1890195618Srpaulo#endif 1891195618Srpaulo if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1892195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1893195618Srpaulo wh, NULL, "%s", "WEP set but not permitted"); 1894195618Srpaulo vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 1895195618Srpaulo goto out; 1896195618Srpaulo } 1897195618Srpaulo vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 1898195618Srpaulo goto out; 1899195618Srpaulo case IEEE80211_FC0_TYPE_CTL: 1900195618Srpaulo vap->iv_stats.is_rx_ctl++; 1901195618Srpaulo IEEE80211_NODE_STAT(ni, rx_ctrl); 1902195618Srpaulo goto out; 1903195618Srpaulo default: 1904195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1905195618Srpaulo wh, "bad", "frame type 0x%x", type); 1906195618Srpaulo /* should not come here */ 1907195618Srpaulo break; 1908195618Srpaulo } 1909195618Srpauloerr: 1910195618Srpaulo ifp->if_ierrors++; 1911195618Srpauloout: 1912195618Srpaulo if (m != NULL) { 1913195618Srpaulo if (need_tap && ieee80211_radiotap_active_vap(vap)) 1914195618Srpaulo ieee80211_radiotap_rx(vap, m); 1915195618Srpaulo m_freem(m); 1916195618Srpaulo } 1917195618Srpaulo return type; 1918234878Smonthadar#undef HAS_SEQ 1919234878Smonthadar#undef MC01 1920234878Smonthadar#undef MC10 1921195618Srpaulo} 1922195618Srpaulo 1923195618Srpaulostatic void 1924195618Srpaulomesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1925195618Srpaulo int rssi, int nf) 1926195618Srpaulo{ 1927195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 1928195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 1929195618Srpaulo struct ieee80211com *ic = ni->ni_ic; 1930195618Srpaulo struct ieee80211_frame *wh; 1931234877Smonthadar struct ieee80211_mesh_route *rt; 1932195618Srpaulo uint8_t *frm, *efrm; 1933195618Srpaulo 1934195618Srpaulo wh = mtod(m0, struct ieee80211_frame *); 1935195618Srpaulo frm = (uint8_t *)&wh[1]; 1936195618Srpaulo efrm = mtod(m0, uint8_t *) + m0->m_len; 1937195618Srpaulo switch (subtype) { 1938195618Srpaulo case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1939195618Srpaulo case IEEE80211_FC0_SUBTYPE_BEACON: 1940195618Srpaulo { 1941195618Srpaulo struct ieee80211_scanparams scan; 1942195618Srpaulo /* 1943195618Srpaulo * We process beacon/probe response 1944195618Srpaulo * frames to discover neighbors. 1945195618Srpaulo */ 1946195618Srpaulo if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1947195618Srpaulo return; 1948195618Srpaulo /* 1949195618Srpaulo * Count frame now that we know it's to be processed. 1950195618Srpaulo */ 1951195618Srpaulo if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1952195618Srpaulo vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1953195618Srpaulo IEEE80211_NODE_STAT(ni, rx_beacons); 1954195618Srpaulo } else 1955195618Srpaulo IEEE80211_NODE_STAT(ni, rx_proberesp); 1956195618Srpaulo /* 1957195618Srpaulo * If scanning, just pass information to the scan module. 1958195618Srpaulo */ 1959195618Srpaulo if (ic->ic_flags & IEEE80211_F_SCAN) { 1960195618Srpaulo if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1961195618Srpaulo /* 1962195618Srpaulo * Actively scanning a channel marked passive; 1963195618Srpaulo * send a probe request now that we know there 1964195618Srpaulo * is 802.11 traffic present. 1965195618Srpaulo * 1966195618Srpaulo * XXX check if the beacon we recv'd gives 1967195618Srpaulo * us what we need and suppress the probe req 1968195618Srpaulo */ 1969195618Srpaulo ieee80211_probe_curchan(vap, 1); 1970195618Srpaulo ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1971195618Srpaulo } 1972195618Srpaulo ieee80211_add_scan(vap, &scan, wh, 1973195618Srpaulo subtype, rssi, nf); 1974195618Srpaulo return; 1975195618Srpaulo } 1976195618Srpaulo 1977195618Srpaulo /* The rest of this code assumes we are running */ 1978195618Srpaulo if (vap->iv_state != IEEE80211_S_RUN) 1979195618Srpaulo return; 1980195618Srpaulo /* 1981195618Srpaulo * Ignore non-mesh STAs. 1982195618Srpaulo */ 1983195618Srpaulo if ((scan.capinfo & 1984195618Srpaulo (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || 1985195618Srpaulo scan.meshid == NULL || scan.meshconf == NULL) { 1986195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1987195618Srpaulo wh, "beacon", "%s", "not a mesh sta"); 1988195618Srpaulo vap->iv_stats.is_mesh_wrongmesh++; 1989195618Srpaulo return; 1990195618Srpaulo } 1991195618Srpaulo /* 1992195618Srpaulo * Ignore STAs for other mesh networks. 1993195618Srpaulo */ 1994195618Srpaulo if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || 1995195618Srpaulo mesh_verify_meshconf(vap, scan.meshconf)) { 1996195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1997195618Srpaulo wh, "beacon", "%s", "not for our mesh"); 1998195618Srpaulo vap->iv_stats.is_mesh_wrongmesh++; 1999195618Srpaulo return; 2000195618Srpaulo } 2001195618Srpaulo /* 2002195618Srpaulo * Peer only based on the current ACL policy. 2003195618Srpaulo */ 2004228622Sbschmidt if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { 2005195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, 2006195618Srpaulo wh, NULL, "%s", "disallowed by ACL"); 2007195618Srpaulo vap->iv_stats.is_rx_acl++; 2008195618Srpaulo return; 2009195618Srpaulo } 2010195618Srpaulo /* 2011195618Srpaulo * Do neighbor discovery. 2012195618Srpaulo */ 2013195618Srpaulo if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 2014195618Srpaulo /* 2015195618Srpaulo * Create a new entry in the neighbor table. 2016195618Srpaulo */ 2017195618Srpaulo ni = ieee80211_add_neighbor(vap, wh, &scan); 2018195618Srpaulo } 2019195618Srpaulo /* 2020195618Srpaulo * Automatically peer with discovered nodes if possible. 2021195618Srpaulo */ 2022195618Srpaulo if (ni != vap->iv_bss && 2023234877Smonthadar (ms->ms_flags & IEEE80211_MESHFLAGS_AP)) { 2024234877Smonthadar switch (ni->ni_mlstate) { 2025234877Smonthadar case IEEE80211_NODE_MESH_IDLE: 2026234877Smonthadar { 2027234877Smonthadar uint16_t args[1]; 2028195618Srpaulo 2029246497Smonthadar /* Wait for backoff callout to reset counter */ 2030246497Smonthadar if (ni->ni_mlhcnt >= ieee80211_mesh_maxholding) 2031246497Smonthadar return; 2032246497Smonthadar 2033234877Smonthadar ni->ni_mlpid = mesh_generateid(vap); 2034234877Smonthadar if (ni->ni_mlpid == 0) 2035234877Smonthadar return; 2036234877Smonthadar mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); 2037234877Smonthadar args[0] = ni->ni_mlpid; 2038234877Smonthadar ieee80211_send_action(ni, 2039234877Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2040234877Smonthadar IEEE80211_ACTION_MESHPEERING_OPEN, args); 2041234877Smonthadar ni->ni_mlrcnt = 0; 2042234877Smonthadar mesh_peer_timeout_setup(ni); 2043234877Smonthadar break; 2044234877Smonthadar } 2045234877Smonthadar case IEEE80211_NODE_MESH_ESTABLISHED: 2046234877Smonthadar { 2047234877Smonthadar /* 2048234877Smonthadar * Valid beacon from a peer mesh STA 2049234877Smonthadar * bump TA lifetime 2050234877Smonthadar */ 2051234877Smonthadar rt = ieee80211_mesh_rt_find(vap, wh->i_addr2); 2052234877Smonthadar if(rt != NULL) { 2053234877Smonthadar ieee80211_mesh_rt_update(rt, 2054234879Smonthadar ticks_to_msecs( 2055234879Smonthadar ms->ms_ppath->mpp_inact)); 2056234877Smonthadar } 2057234877Smonthadar break; 2058234877Smonthadar } 2059234877Smonthadar default: 2060234877Smonthadar break; /* ignore */ 2061234877Smonthadar } 2062195618Srpaulo } 2063195618Srpaulo break; 2064195618Srpaulo } 2065195618Srpaulo case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 2066195618Srpaulo { 2067195618Srpaulo uint8_t *ssid, *meshid, *rates, *xrates; 2068195618Srpaulo uint8_t *sfrm; 2069195618Srpaulo 2070195618Srpaulo if (vap->iv_state != IEEE80211_S_RUN) { 2071195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 2072195618Srpaulo wh, NULL, "wrong state %s", 2073195618Srpaulo ieee80211_state_name[vap->iv_state]); 2074195618Srpaulo vap->iv_stats.is_rx_mgtdiscard++; 2075195618Srpaulo return; 2076195618Srpaulo } 2077195618Srpaulo if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 2078195618Srpaulo /* frame must be directed */ 2079195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 2080195618Srpaulo wh, NULL, "%s", "not unicast"); 2081195618Srpaulo vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 2082195618Srpaulo return; 2083195618Srpaulo } 2084195618Srpaulo /* 2085195618Srpaulo * prreq frame format 2086195618Srpaulo * [tlv] ssid 2087195618Srpaulo * [tlv] supported rates 2088195618Srpaulo * [tlv] extended supported rates 2089195618Srpaulo * [tlv] mesh id 2090195618Srpaulo */ 2091195618Srpaulo ssid = meshid = rates = xrates = NULL; 2092195618Srpaulo sfrm = frm; 2093195618Srpaulo while (efrm - frm > 1) { 2094195618Srpaulo IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 2095195618Srpaulo switch (*frm) { 2096195618Srpaulo case IEEE80211_ELEMID_SSID: 2097195618Srpaulo ssid = frm; 2098195618Srpaulo break; 2099195618Srpaulo case IEEE80211_ELEMID_RATES: 2100195618Srpaulo rates = frm; 2101195618Srpaulo break; 2102195618Srpaulo case IEEE80211_ELEMID_XRATES: 2103195618Srpaulo xrates = frm; 2104195618Srpaulo break; 2105195618Srpaulo case IEEE80211_ELEMID_MESHID: 2106195618Srpaulo meshid = frm; 2107195618Srpaulo break; 2108195618Srpaulo } 2109217590Sbschmidt frm += frm[1] + 2; 2110195618Srpaulo } 2111195618Srpaulo IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 2112195618Srpaulo IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 2113195618Srpaulo if (xrates != NULL) 2114195618Srpaulo IEEE80211_VERIFY_ELEMENT(xrates, 2115195618Srpaulo IEEE80211_RATE_MAXSIZE - rates[1], return); 2116203423Srpaulo if (meshid != NULL) { 2117195618Srpaulo IEEE80211_VERIFY_ELEMENT(meshid, 2118195618Srpaulo IEEE80211_MESHID_LEN, return); 2119203423Srpaulo /* NB: meshid, not ssid */ 2120203423Srpaulo IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); 2121203423Srpaulo } 2122195618Srpaulo 2123195618Srpaulo /* XXX find a better class or define it's own */ 2124195618Srpaulo IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 2125195618Srpaulo "%s", "recv probe req"); 2126195618Srpaulo /* 2127195618Srpaulo * Some legacy 11b clients cannot hack a complete 2128195618Srpaulo * probe response frame. When the request includes 2129195618Srpaulo * only a bare-bones rate set, communicate this to 2130195618Srpaulo * the transmit side. 2131195618Srpaulo */ 2132195618Srpaulo ieee80211_send_proberesp(vap, wh->i_addr2, 0); 2133195618Srpaulo break; 2134195618Srpaulo } 2135218927Sbschmidt 2136195618Srpaulo case IEEE80211_FC0_SUBTYPE_ACTION: 2137218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: 2138195618Srpaulo if (ni == vap->iv_bss) { 2139218958Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 2140195618Srpaulo wh, NULL, "%s", "unknown node"); 2141195618Srpaulo vap->iv_stats.is_rx_mgtdiscard++; 2142218958Sbschmidt } else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 2143195618Srpaulo !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 2144218958Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 2145218958Sbschmidt wh, NULL, "%s", "not for us"); 2146195618Srpaulo vap->iv_stats.is_rx_mgtdiscard++; 2147218958Sbschmidt } else if (vap->iv_state != IEEE80211_S_RUN) { 2148218927Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 2149218927Sbschmidt wh, NULL, "wrong state %s", 2150218927Sbschmidt ieee80211_state_name[vap->iv_state]); 2151218927Sbschmidt vap->iv_stats.is_rx_mgtdiscard++; 2152218958Sbschmidt } else { 2153218958Sbschmidt if (ieee80211_parse_action(ni, m0) == 0) 2154218958Sbschmidt (void)ic->ic_recv_action(ni, wh, frm, efrm); 2155218927Sbschmidt } 2156195618Srpaulo break; 2157218927Sbschmidt 2158195618Srpaulo case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 2159218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 2160195618Srpaulo case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 2161195618Srpaulo case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 2162218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ATIM: 2163218927Sbschmidt case IEEE80211_FC0_SUBTYPE_DISASSOC: 2164218927Sbschmidt case IEEE80211_FC0_SUBTYPE_AUTH: 2165195618Srpaulo case IEEE80211_FC0_SUBTYPE_DEAUTH: 2166195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 2167195618Srpaulo wh, NULL, "%s", "not handled"); 2168195618Srpaulo vap->iv_stats.is_rx_mgtdiscard++; 2169218927Sbschmidt break; 2170218927Sbschmidt 2171195618Srpaulo default: 2172195618Srpaulo IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 2173195618Srpaulo wh, "mgt", "subtype 0x%x not handled", subtype); 2174195618Srpaulo vap->iv_stats.is_rx_badsubtype++; 2175195618Srpaulo break; 2176195618Srpaulo } 2177195618Srpaulo} 2178195618Srpaulo 2179205277Srpaulostatic void 2180205277Srpaulomesh_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 2181205277Srpaulo{ 2182205277Srpaulo 2183205277Srpaulo switch (subtype) { 2184205277Srpaulo case IEEE80211_FC0_SUBTYPE_BAR: 2185205277Srpaulo ieee80211_recv_bar(ni, m); 2186205277Srpaulo break; 2187205277Srpaulo } 2188205277Srpaulo} 2189205277Srpaulo 2190195618Srpaulo/* 2191234876Smonthadar * Parse meshpeering action ie's for MPM frames 2192195618Srpaulo */ 2193195618Srpaulostatic const struct ieee80211_meshpeer_ie * 2194195618Srpaulomesh_parse_meshpeering_action(struct ieee80211_node *ni, 2195195618Srpaulo const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 2196195618Srpaulo const uint8_t *frm, const uint8_t *efrm, 2197197413Srpaulo struct ieee80211_meshpeer_ie *mp, uint8_t subtype) 2198195618Srpaulo{ 2199195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 2200195618Srpaulo const struct ieee80211_meshpeer_ie *mpie; 2201234876Smonthadar uint16_t args[3]; 2202197413Srpaulo const uint8_t *meshid, *meshconf, *meshpeer; 2203234876Smonthadar uint8_t sendclose = 0; /* 1 = MPM frame rejected, close will be sent */ 2204195618Srpaulo 2205197413Srpaulo meshid = meshconf = meshpeer = NULL; 2206195618Srpaulo while (efrm - frm > 1) { 2207195618Srpaulo IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); 2208195618Srpaulo switch (*frm) { 2209195618Srpaulo case IEEE80211_ELEMID_MESHID: 2210195618Srpaulo meshid = frm; 2211195618Srpaulo break; 2212195618Srpaulo case IEEE80211_ELEMID_MESHCONF: 2213195618Srpaulo meshconf = frm; 2214195618Srpaulo break; 2215195618Srpaulo case IEEE80211_ELEMID_MESHPEER: 2216195618Srpaulo meshpeer = frm; 2217195618Srpaulo mpie = (const struct ieee80211_meshpeer_ie *) frm; 2218195618Srpaulo memset(mp, 0, sizeof(*mp)); 2219234876Smonthadar mp->peer_len = mpie->peer_len; 2220234875Smonthadar mp->peer_proto = LE_READ_2(&mpie->peer_proto); 2221195618Srpaulo mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); 2222234875Smonthadar switch (subtype) { 2223234875Smonthadar case IEEE80211_ACTION_MESHPEERING_CONFIRM: 2224234875Smonthadar mp->peer_linkid = 2225234875Smonthadar LE_READ_2(&mpie->peer_linkid); 2226234875Smonthadar break; 2227234875Smonthadar case IEEE80211_ACTION_MESHPEERING_CLOSE: 2228234875Smonthadar /* NB: peer link ID is optional */ 2229234875Smonthadar if (mpie->peer_len == 2230234875Smonthadar (IEEE80211_MPM_BASE_SZ + 2)) { 2231234875Smonthadar mp->peer_linkid = 0; 2232234875Smonthadar mp->peer_rcode = 2233234875Smonthadar LE_READ_2(&mpie->peer_linkid); 2234234875Smonthadar } else { 2235234875Smonthadar mp->peer_linkid = 2236234875Smonthadar LE_READ_2(&mpie->peer_linkid); 2237234875Smonthadar mp->peer_rcode = 2238234875Smonthadar LE_READ_2(&mpie->peer_rcode); 2239234875Smonthadar } 2240234875Smonthadar break; 2241195618Srpaulo } 2242195618Srpaulo break; 2243195618Srpaulo } 2244195618Srpaulo frm += frm[1] + 2; 2245195618Srpaulo } 2246195618Srpaulo 2247195618Srpaulo /* 2248234876Smonthadar * Verify the contents of the frame. 2249234876Smonthadar * If it fails validation, close the peer link. 2250195618Srpaulo */ 2251234876Smonthadar if (mesh_verify_meshpeer(vap, subtype, (const uint8_t *)mp)) { 2252234876Smonthadar sendclose = 1; 2253234876Smonthadar IEEE80211_DISCARD(vap, 2254234876Smonthadar IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2255234876Smonthadar wh, NULL, "%s", "MPM validation failed"); 2256234876Smonthadar } 2257195618Srpaulo 2258234876Smonthadar /* If meshid is not the same reject any frames type. */ 2259234876Smonthadar if (sendclose == 0 && mesh_verify_meshid(vap, meshid)) { 2260234876Smonthadar sendclose = 1; 2261234876Smonthadar IEEE80211_DISCARD(vap, 2262234876Smonthadar IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2263234876Smonthadar wh, NULL, "%s", "not for our mesh"); 2264234876Smonthadar if (subtype == IEEE80211_ACTION_MESHPEERING_CLOSE) { 2265234876Smonthadar /* 2266234876Smonthadar * Standard not clear about this, if we dont ignore 2267234876Smonthadar * there will be an endless loop between nodes sending 2268234876Smonthadar * CLOSE frames between each other with wrong meshid. 2269234876Smonthadar * Discard and timers will bring FSM to IDLE state. 2270234876Smonthadar */ 2271234876Smonthadar return NULL; 2272234876Smonthadar } 2273234876Smonthadar } 2274234876Smonthadar 2275234876Smonthadar /* 2276234876Smonthadar * Close frames are accepted if meshid is the same. 2277234876Smonthadar * Verify the other two types. 2278234876Smonthadar */ 2279234876Smonthadar if (sendclose == 0 && subtype != IEEE80211_ACTION_MESHPEERING_CLOSE && 2280195618Srpaulo mesh_verify_meshconf(vap, meshconf)) { 2281234876Smonthadar sendclose = 1; 2282195618Srpaulo IEEE80211_DISCARD(vap, 2283195618Srpaulo IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2284234876Smonthadar wh, NULL, "%s", "configuration missmatch"); 2285234876Smonthadar } 2286234876Smonthadar 2287234876Smonthadar if (sendclose) { 2288195618Srpaulo vap->iv_stats.is_rx_mgtdiscard++; 2289195618Srpaulo switch (ni->ni_mlstate) { 2290195618Srpaulo case IEEE80211_NODE_MESH_IDLE: 2291195618Srpaulo case IEEE80211_NODE_MESH_ESTABLISHED: 2292195618Srpaulo case IEEE80211_NODE_MESH_HOLDING: 2293195618Srpaulo /* ignore */ 2294195618Srpaulo break; 2295195618Srpaulo case IEEE80211_NODE_MESH_OPENSNT: 2296195618Srpaulo case IEEE80211_NODE_MESH_OPENRCV: 2297195618Srpaulo case IEEE80211_NODE_MESH_CONFIRMRCV: 2298195618Srpaulo args[0] = ni->ni_mlpid; 2299195618Srpaulo args[1] = ni->ni_mllid; 2300234876Smonthadar /* Reason codes for rejection */ 2301234876Smonthadar switch (subtype) { 2302234876Smonthadar case IEEE80211_ACTION_MESHPEERING_OPEN: 2303234876Smonthadar args[2] = IEEE80211_REASON_MESH_CPVIOLATION; 2304234876Smonthadar break; 2305234876Smonthadar case IEEE80211_ACTION_MESHPEERING_CONFIRM: 2306234876Smonthadar args[2] = IEEE80211_REASON_MESH_INCONS_PARAMS; 2307234876Smonthadar break; 2308234876Smonthadar } 2309195618Srpaulo ieee80211_send_action(ni, 2310234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2311195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 2312195618Srpaulo args); 2313195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2314195618Srpaulo mesh_peer_timeout_setup(ni); 2315195618Srpaulo break; 2316195618Srpaulo } 2317195618Srpaulo return NULL; 2318195618Srpaulo } 2319234876Smonthadar 2320195618Srpaulo return (const struct ieee80211_meshpeer_ie *) mp; 2321195618Srpaulo} 2322195618Srpaulo 2323195618Srpaulostatic int 2324195618Srpaulomesh_recv_action_meshpeering_open(struct ieee80211_node *ni, 2325195618Srpaulo const struct ieee80211_frame *wh, 2326195618Srpaulo const uint8_t *frm, const uint8_t *efrm) 2327195618Srpaulo{ 2328195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 2329234876Smonthadar struct ieee80211_mesh_state *ms = vap->iv_mesh; 2330195618Srpaulo struct ieee80211_meshpeer_ie ie; 2331195618Srpaulo const struct ieee80211_meshpeer_ie *meshpeer; 2332195618Srpaulo uint16_t args[3]; 2333195618Srpaulo 2334195618Srpaulo /* +2+2 for action + code + capabilites */ 2335197413Srpaulo meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, 2336197413Srpaulo IEEE80211_ACTION_MESHPEERING_OPEN); 2337195618Srpaulo if (meshpeer == NULL) { 2338195618Srpaulo return 0; 2339195618Srpaulo } 2340195618Srpaulo 2341195618Srpaulo /* XXX move up */ 2342195618Srpaulo IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2343195618Srpaulo "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); 2344195618Srpaulo 2345195618Srpaulo switch (ni->ni_mlstate) { 2346195618Srpaulo case IEEE80211_NODE_MESH_IDLE: 2347234876Smonthadar /* Reject open request if reached our maximum neighbor count */ 2348234876Smonthadar if (ms->ms_neighbors >= IEEE80211_MESH_MAX_NEIGHBORS) { 2349234876Smonthadar args[0] = meshpeer->peer_llinkid; 2350234876Smonthadar args[1] = 0; 2351234876Smonthadar args[2] = IEEE80211_REASON_MESH_MAX_PEERS; 2352234876Smonthadar ieee80211_send_action(ni, 2353234876Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2354234876Smonthadar IEEE80211_ACTION_MESHPEERING_CLOSE, 2355234876Smonthadar args); 2356234876Smonthadar /* stay in IDLE state */ 2357234876Smonthadar return (0); 2358234876Smonthadar } 2359234876Smonthadar /* Open frame accepted */ 2360195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 2361195618Srpaulo ni->ni_mllid = meshpeer->peer_llinkid; 2362195618Srpaulo ni->ni_mlpid = mesh_generateid(vap); 2363195618Srpaulo if (ni->ni_mlpid == 0) 2364195618Srpaulo return 0; /* XXX */ 2365195618Srpaulo args[0] = ni->ni_mlpid; 2366195618Srpaulo /* Announce we're open too... */ 2367195618Srpaulo ieee80211_send_action(ni, 2368234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2369195618Srpaulo IEEE80211_ACTION_MESHPEERING_OPEN, args); 2370195618Srpaulo /* ...and confirm the link. */ 2371195618Srpaulo args[0] = ni->ni_mlpid; 2372195618Srpaulo args[1] = ni->ni_mllid; 2373195618Srpaulo ieee80211_send_action(ni, 2374234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2375195618Srpaulo IEEE80211_ACTION_MESHPEERING_CONFIRM, 2376195618Srpaulo args); 2377195618Srpaulo mesh_peer_timeout_setup(ni); 2378195618Srpaulo break; 2379195618Srpaulo case IEEE80211_NODE_MESH_OPENRCV: 2380195618Srpaulo /* Wrong Link ID */ 2381195618Srpaulo if (ni->ni_mllid != meshpeer->peer_llinkid) { 2382195618Srpaulo args[0] = ni->ni_mllid; 2383195618Srpaulo args[1] = ni->ni_mlpid; 2384195618Srpaulo args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 2385195618Srpaulo ieee80211_send_action(ni, 2386234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2387195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 2388195618Srpaulo args); 2389195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2390195618Srpaulo mesh_peer_timeout_setup(ni); 2391195618Srpaulo break; 2392195618Srpaulo } 2393195618Srpaulo /* Duplicate open, confirm again. */ 2394195618Srpaulo args[0] = ni->ni_mlpid; 2395195618Srpaulo args[1] = ni->ni_mllid; 2396195618Srpaulo ieee80211_send_action(ni, 2397234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2398195618Srpaulo IEEE80211_ACTION_MESHPEERING_CONFIRM, 2399195618Srpaulo args); 2400195618Srpaulo break; 2401195618Srpaulo case IEEE80211_NODE_MESH_OPENSNT: 2402195618Srpaulo ni->ni_mllid = meshpeer->peer_llinkid; 2403195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); 2404195618Srpaulo args[0] = ni->ni_mlpid; 2405195618Srpaulo args[1] = ni->ni_mllid; 2406195618Srpaulo ieee80211_send_action(ni, 2407234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2408195618Srpaulo IEEE80211_ACTION_MESHPEERING_CONFIRM, 2409195618Srpaulo args); 2410195618Srpaulo /* NB: don't setup/clear any timeout */ 2411195618Srpaulo break; 2412195618Srpaulo case IEEE80211_NODE_MESH_CONFIRMRCV: 2413195618Srpaulo if (ni->ni_mlpid != meshpeer->peer_linkid || 2414195618Srpaulo ni->ni_mllid != meshpeer->peer_llinkid) { 2415195618Srpaulo args[0] = ni->ni_mlpid; 2416195618Srpaulo args[1] = ni->ni_mllid; 2417195618Srpaulo args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 2418195618Srpaulo ieee80211_send_action(ni, 2419234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2420195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 2421195618Srpaulo args); 2422195618Srpaulo mesh_linkchange(ni, 2423195618Srpaulo IEEE80211_NODE_MESH_HOLDING); 2424195618Srpaulo mesh_peer_timeout_setup(ni); 2425195618Srpaulo break; 2426195618Srpaulo } 2427195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 2428195618Srpaulo ni->ni_mllid = meshpeer->peer_llinkid; 2429195618Srpaulo args[0] = ni->ni_mlpid; 2430195618Srpaulo args[1] = ni->ni_mllid; 2431195618Srpaulo ieee80211_send_action(ni, 2432234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2433195618Srpaulo IEEE80211_ACTION_MESHPEERING_CONFIRM, 2434195618Srpaulo args); 2435195618Srpaulo mesh_peer_timeout_stop(ni); 2436195618Srpaulo break; 2437195618Srpaulo case IEEE80211_NODE_MESH_ESTABLISHED: 2438195618Srpaulo if (ni->ni_mllid != meshpeer->peer_llinkid) { 2439195618Srpaulo args[0] = ni->ni_mllid; 2440195618Srpaulo args[1] = ni->ni_mlpid; 2441195618Srpaulo args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 2442195618Srpaulo ieee80211_send_action(ni, 2443234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2444195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 2445195618Srpaulo args); 2446195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2447195618Srpaulo mesh_peer_timeout_setup(ni); 2448195618Srpaulo break; 2449195618Srpaulo } 2450195618Srpaulo args[0] = ni->ni_mlpid; 2451195618Srpaulo args[1] = ni->ni_mllid; 2452195618Srpaulo ieee80211_send_action(ni, 2453234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2454195618Srpaulo IEEE80211_ACTION_MESHPEERING_CONFIRM, 2455195618Srpaulo args); 2456195618Srpaulo break; 2457195618Srpaulo case IEEE80211_NODE_MESH_HOLDING: 2458195618Srpaulo args[0] = ni->ni_mlpid; 2459195618Srpaulo args[1] = meshpeer->peer_llinkid; 2460234876Smonthadar /* Standard not clear about what the reaason code should be */ 2461234876Smonthadar args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 2462195618Srpaulo ieee80211_send_action(ni, 2463234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2464195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 2465195618Srpaulo args); 2466195618Srpaulo break; 2467195618Srpaulo } 2468195618Srpaulo return 0; 2469195618Srpaulo} 2470195618Srpaulo 2471195618Srpaulostatic int 2472195618Srpaulomesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, 2473195618Srpaulo const struct ieee80211_frame *wh, 2474195618Srpaulo const uint8_t *frm, const uint8_t *efrm) 2475195618Srpaulo{ 2476195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 2477195618Srpaulo struct ieee80211_meshpeer_ie ie; 2478195618Srpaulo const struct ieee80211_meshpeer_ie *meshpeer; 2479195618Srpaulo uint16_t args[3]; 2480195618Srpaulo 2481195618Srpaulo /* +2+2+2+2 for action + code + capabilites + status code + AID */ 2482197413Srpaulo meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, 2483197413Srpaulo IEEE80211_ACTION_MESHPEERING_CONFIRM); 2484195618Srpaulo if (meshpeer == NULL) { 2485195618Srpaulo return 0; 2486195618Srpaulo } 2487195618Srpaulo 2488195618Srpaulo IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2489195618Srpaulo "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", 2490195618Srpaulo meshpeer->peer_llinkid, meshpeer->peer_linkid); 2491195618Srpaulo 2492195618Srpaulo switch (ni->ni_mlstate) { 2493195618Srpaulo case IEEE80211_NODE_MESH_OPENRCV: 2494195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); 2495195618Srpaulo mesh_peer_timeout_stop(ni); 2496195618Srpaulo break; 2497195618Srpaulo case IEEE80211_NODE_MESH_OPENSNT: 2498195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); 2499234876Smonthadar mesh_peer_timeout_setup(ni); 2500195618Srpaulo break; 2501195618Srpaulo case IEEE80211_NODE_MESH_HOLDING: 2502195618Srpaulo args[0] = ni->ni_mlpid; 2503195618Srpaulo args[1] = meshpeer->peer_llinkid; 2504234876Smonthadar /* Standard not clear about what the reaason code should be */ 2505234876Smonthadar args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 2506195618Srpaulo ieee80211_send_action(ni, 2507234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2508195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 2509195618Srpaulo args); 2510195618Srpaulo break; 2511195618Srpaulo case IEEE80211_NODE_MESH_CONFIRMRCV: 2512195618Srpaulo if (ni->ni_mllid != meshpeer->peer_llinkid) { 2513195618Srpaulo args[0] = ni->ni_mlpid; 2514195618Srpaulo args[1] = ni->ni_mllid; 2515195618Srpaulo args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; 2516195618Srpaulo ieee80211_send_action(ni, 2517234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2518195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 2519195618Srpaulo args); 2520195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2521195618Srpaulo mesh_peer_timeout_setup(ni); 2522195618Srpaulo } 2523195618Srpaulo break; 2524195618Srpaulo default: 2525195618Srpaulo IEEE80211_DISCARD(vap, 2526195618Srpaulo IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2527195618Srpaulo wh, NULL, "received confirm in invalid state %d", 2528195618Srpaulo ni->ni_mlstate); 2529195618Srpaulo vap->iv_stats.is_rx_mgtdiscard++; 2530195618Srpaulo break; 2531195618Srpaulo } 2532195618Srpaulo return 0; 2533195618Srpaulo} 2534195618Srpaulo 2535195618Srpaulostatic int 2536195618Srpaulomesh_recv_action_meshpeering_close(struct ieee80211_node *ni, 2537195618Srpaulo const struct ieee80211_frame *wh, 2538195618Srpaulo const uint8_t *frm, const uint8_t *efrm) 2539195618Srpaulo{ 2540234876Smonthadar struct ieee80211_meshpeer_ie ie; 2541234876Smonthadar const struct ieee80211_meshpeer_ie *meshpeer; 2542195618Srpaulo uint16_t args[3]; 2543195618Srpaulo 2544234876Smonthadar /* +2 for action + code */ 2545234876Smonthadar meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2, efrm, &ie, 2546234876Smonthadar IEEE80211_ACTION_MESHPEERING_CLOSE); 2547234876Smonthadar if (meshpeer == NULL) { 2548234876Smonthadar return 0; 2549234876Smonthadar } 2550234876Smonthadar 2551234876Smonthadar /* 2552234876Smonthadar * XXX: check reason code, for example we could receive 2553234876Smonthadar * IEEE80211_REASON_MESH_MAX_PEERS then we should not attempt 2554234876Smonthadar * to peer again. 2555234876Smonthadar */ 2556234876Smonthadar 2557195618Srpaulo IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2558195618Srpaulo ni, "%s", "recv PEER CLOSE"); 2559195618Srpaulo 2560195618Srpaulo switch (ni->ni_mlstate) { 2561195618Srpaulo case IEEE80211_NODE_MESH_IDLE: 2562195618Srpaulo /* ignore */ 2563195618Srpaulo break; 2564195618Srpaulo case IEEE80211_NODE_MESH_OPENRCV: 2565195618Srpaulo case IEEE80211_NODE_MESH_OPENSNT: 2566195618Srpaulo case IEEE80211_NODE_MESH_CONFIRMRCV: 2567195618Srpaulo case IEEE80211_NODE_MESH_ESTABLISHED: 2568195618Srpaulo args[0] = ni->ni_mlpid; 2569195618Srpaulo args[1] = ni->ni_mllid; 2570195618Srpaulo args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; 2571195618Srpaulo ieee80211_send_action(ni, 2572234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 2573195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, 2574195618Srpaulo args); 2575195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 2576195618Srpaulo mesh_peer_timeout_setup(ni); 2577195618Srpaulo break; 2578195618Srpaulo case IEEE80211_NODE_MESH_HOLDING: 2579195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 2580234876Smonthadar mesh_peer_timeout_stop(ni); 2581195618Srpaulo break; 2582195618Srpaulo } 2583195618Srpaulo return 0; 2584195618Srpaulo} 2585195618Srpaulo 2586195618Srpaulo/* 2587195618Srpaulo * Link Metric handling. 2588195618Srpaulo */ 2589195618Srpaulostatic int 2590232479Sadrianmesh_recv_action_meshlmetric(struct ieee80211_node *ni, 2591195618Srpaulo const struct ieee80211_frame *wh, 2592195618Srpaulo const uint8_t *frm, const uint8_t *efrm) 2593195618Srpaulo{ 2594232479Sadrian const struct ieee80211_meshlmetric_ie *ie = 2595232479Sadrian (const struct ieee80211_meshlmetric_ie *) 2596232479Sadrian (frm+2); /* action + code */ 2597232479Sadrian struct ieee80211_meshlmetric_ie lm_rep; 2598232479Sadrian 2599232479Sadrian if (ie->lm_flags & IEEE80211_MESH_LMETRIC_FLAGS_REQ) { 2600232479Sadrian lm_rep.lm_flags = 0; 2601232479Sadrian lm_rep.lm_metric = mesh_airtime_calc(ni); 2602232479Sadrian ieee80211_send_action(ni, 2603232479Sadrian IEEE80211_ACTION_CAT_MESH, 2604232479Sadrian IEEE80211_ACTION_MESH_LMETRIC, 2605232479Sadrian &lm_rep); 2606232479Sadrian } 2607232479Sadrian /* XXX: else do nothing for now */ 2608195618Srpaulo return 0; 2609195618Srpaulo} 2610195618Srpaulo 2611246506Smonthadar/* 2612246520Smonthadar * Parse meshgate action ie's for GANN frames. 2613246520Smonthadar * Returns -1 if parsing fails, otherwise 0. 2614246520Smonthadar */ 2615246520Smonthadarstatic int 2616246520Smonthadarmesh_parse_meshgate_action(struct ieee80211_node *ni, 2617246520Smonthadar const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ 2618246520Smonthadar struct ieee80211_meshgann_ie *ie, const uint8_t *frm, const uint8_t *efrm) 2619246520Smonthadar{ 2620246520Smonthadar struct ieee80211vap *vap = ni->ni_vap; 2621246520Smonthadar const struct ieee80211_meshgann_ie *gannie; 2622246520Smonthadar 2623246520Smonthadar while (efrm - frm > 1) { 2624246520Smonthadar IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return -1); 2625246520Smonthadar switch (*frm) { 2626246520Smonthadar case IEEE80211_ELEMID_MESHGANN: 2627246520Smonthadar gannie = (const struct ieee80211_meshgann_ie *) frm; 2628246520Smonthadar memset(ie, 0, sizeof(ie)); 2629246520Smonthadar ie->gann_ie = gannie->gann_ie; 2630246520Smonthadar ie->gann_len = gannie->gann_len; 2631246520Smonthadar ie->gann_flags = gannie->gann_flags; 2632246520Smonthadar ie->gann_hopcount = gannie->gann_hopcount; 2633246520Smonthadar ie->gann_ttl = gannie->gann_ttl; 2634246520Smonthadar IEEE80211_ADDR_COPY(ie->gann_addr, gannie->gann_addr); 2635246520Smonthadar ie->gann_seq = LE_READ_4(&gannie->gann_seq); 2636246520Smonthadar ie->gann_interval = LE_READ_2(&gannie->gann_interval); 2637246520Smonthadar break; 2638246520Smonthadar } 2639246520Smonthadar frm += frm[1] + 2; 2640246520Smonthadar } 2641246520Smonthadar 2642246520Smonthadar return 0; 2643246520Smonthadar} 2644246520Smonthadar 2645246520Smonthadar/* 2646246506Smonthadar * Mesh Gate Announcement handling. 2647246506Smonthadar */ 2648195618Srpaulostatic int 2649246506Smonthadarmesh_recv_action_meshgate(struct ieee80211_node *ni, 2650246506Smonthadar const struct ieee80211_frame *wh, 2651246506Smonthadar const uint8_t *frm, const uint8_t *efrm) 2652195618Srpaulo{ 2653246506Smonthadar struct ieee80211vap *vap = ni->ni_vap; 2654246508Smonthadar struct ieee80211_mesh_state *ms = vap->iv_mesh; 2655246508Smonthadar struct ieee80211_mesh_gate_route *gr, *next; 2656246506Smonthadar struct ieee80211_mesh_route *rt_gate; 2657246508Smonthadar struct ieee80211_meshgann_ie pgann; 2658246520Smonthadar struct ieee80211_meshgann_ie ie; 2659246508Smonthadar int found = 0; 2660246506Smonthadar 2661246520Smonthadar /* +2 for action + code */ 2662246520Smonthadar if (mesh_parse_meshgate_action(ni, wh, &ie, frm+2, efrm) != 0) { 2663246520Smonthadar IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 2664246520Smonthadar ni->ni_macaddr, NULL, "%s", 2665246520Smonthadar "GANN parsing failed"); 2666246520Smonthadar vap->iv_stats.is_rx_mgtdiscard++; 2667246520Smonthadar return (0); 2668246520Smonthadar } 2669246520Smonthadar 2670246520Smonthadar if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ie.gann_addr)) 2671246508Smonthadar return 0; 2672246506Smonthadar 2673246508Smonthadar IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, ni->ni_macaddr, 2674246520Smonthadar "received GANN, meshgate: %6D (seq %u)", ie.gann_addr, ":", 2675246520Smonthadar ie.gann_seq); 2676246508Smonthadar 2677246508Smonthadar if (ms == NULL) 2678246508Smonthadar return (0); 2679246508Smonthadar MESH_RT_LOCK(ms); 2680246508Smonthadar TAILQ_FOREACH_SAFE(gr, &ms->ms_known_gates, gr_next, next) { 2681246520Smonthadar if (!IEEE80211_ADDR_EQ(gr->gr_addr, ie.gann_addr)) 2682246508Smonthadar continue; 2683246520Smonthadar if (ie.gann_seq <= gr->gr_lastseq) { 2684246508Smonthadar IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 2685246508Smonthadar ni->ni_macaddr, NULL, 2686246508Smonthadar "GANN old seqno %u <= %u", 2687246520Smonthadar ie.gann_seq, gr->gr_lastseq); 2688246508Smonthadar MESH_RT_UNLOCK(ms); 2689246508Smonthadar return (0); 2690246508Smonthadar } 2691246508Smonthadar /* corresponding mesh gate found & GANN accepted */ 2692246508Smonthadar found = 1; 2693246508Smonthadar break; 2694246508Smonthadar 2695246508Smonthadar } 2696246508Smonthadar if (found == 0) { 2697246508Smonthadar /* this GANN is from a new mesh Gate add it to known table. */ 2698246520Smonthadar IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, ie.gann_addr, 2699246520Smonthadar "stored new GANN information, seq %u.", ie.gann_seq); 2700246508Smonthadar gr = malloc(ALIGN(sizeof(struct ieee80211_mesh_gate_route)), 2701246508Smonthadar M_80211_MESH_GT_RT, M_NOWAIT | M_ZERO); 2702246520Smonthadar IEEE80211_ADDR_COPY(gr->gr_addr, ie.gann_addr); 2703246508Smonthadar TAILQ_INSERT_TAIL(&ms->ms_known_gates, gr, gr_next); 2704246508Smonthadar } 2705246520Smonthadar gr->gr_lastseq = ie.gann_seq; 2706246508Smonthadar 2707246508Smonthadar /* check if we have a path to this gate */ 2708246508Smonthadar rt_gate = mesh_rt_find_locked(ms, gr->gr_addr); 2709246506Smonthadar if (rt_gate != NULL && 2710246508Smonthadar rt_gate->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) { 2711246508Smonthadar gr->gr_route = rt_gate; 2712246506Smonthadar rt_gate->rt_flags |= IEEE80211_MESHRT_FLAGS_GATE; 2713246508Smonthadar } 2714246506Smonthadar 2715246508Smonthadar MESH_RT_UNLOCK(ms); 2716246508Smonthadar 2717246508Smonthadar /* popagate only if decremented ttl >= 1 && forwarding is enabled */ 2718246520Smonthadar if ((ie.gann_ttl - 1) < 1 && !(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) 2719246508Smonthadar return 0; 2720246520Smonthadar pgann.gann_flags = ie.gann_flags; /* Reserved */ 2721246520Smonthadar pgann.gann_hopcount = ie.gann_hopcount + 1; 2722246520Smonthadar pgann.gann_ttl = ie.gann_ttl - 1; 2723246520Smonthadar IEEE80211_ADDR_COPY(pgann.gann_addr, ie.gann_addr); 2724246520Smonthadar pgann.gann_seq = ie.gann_seq; 2725246520Smonthadar pgann.gann_interval = ie.gann_interval; 2726246508Smonthadar 2727246520Smonthadar IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, ie.gann_addr, 2728246508Smonthadar "%s", "propagate GANN"); 2729246508Smonthadar 2730246508Smonthadar ieee80211_send_action(vap->iv_bss, IEEE80211_ACTION_CAT_MESH, 2731246508Smonthadar IEEE80211_ACTION_MESH_GANN, &pgann); 2732246508Smonthadar 2733246506Smonthadar return 0; 2734246506Smonthadar} 2735246506Smonthadar 2736246506Smonthadarstatic int 2737246506Smonthadarmesh_send_action(struct ieee80211_node *ni, 2738246506Smonthadar const uint8_t sa[IEEE80211_ADDR_LEN], 2739246506Smonthadar const uint8_t da[IEEE80211_ADDR_LEN], 2740246506Smonthadar struct mbuf *m) 2741246506Smonthadar{ 2742246506Smonthadar struct ieee80211vap *vap = ni->ni_vap; 2743246506Smonthadar struct ieee80211com *ic = ni->ni_ic; 2744195618Srpaulo struct ieee80211_bpf_params params; 2745246506Smonthadar struct ieee80211_frame *wh; 2746195618Srpaulo 2747246506Smonthadar KASSERT(ni != NULL, ("null node")); 2748246506Smonthadar 2749246506Smonthadar if (vap->iv_state == IEEE80211_S_CAC) { 2750246506Smonthadar IEEE80211_NOTE(vap, IEEE80211_MSG_OUTPUT, ni, 2751246506Smonthadar "block %s frame in CAC state", "Mesh action"); 2752246506Smonthadar vap->iv_stats.is_tx_badstate++; 2753246506Smonthadar ieee80211_free_node(ni); 2754246506Smonthadar m_freem(m); 2755246506Smonthadar return EIO; /* XXX */ 2756246506Smonthadar } 2757246506Smonthadar 2758246506Smonthadar M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 2759246506Smonthadar if (m == NULL) { 2760246506Smonthadar ieee80211_free_node(ni); 2761246506Smonthadar return ENOMEM; 2762246506Smonthadar } 2763246506Smonthadar 2764246506Smonthadar wh = mtod(m, struct ieee80211_frame *); 2765246506Smonthadar ieee80211_send_setup(ni, m, 2766246506Smonthadar IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_ACTION, 2767246506Smonthadar IEEE80211_NONQOS_TID, sa, da, sa); 2768246506Smonthadar m->m_flags |= M_ENCAP; /* mark encapsulated */ 2769246506Smonthadar 2770195618Srpaulo memset(¶ms, 0, sizeof(params)); 2771195618Srpaulo params.ibp_pri = WME_AC_VO; 2772195618Srpaulo params.ibp_rate0 = ni->ni_txparms->mgmtrate; 2773246506Smonthadar if (IEEE80211_IS_MULTICAST(da)) 2774246506Smonthadar params.ibp_try0 = 1; 2775246506Smonthadar else 2776246506Smonthadar params.ibp_try0 = ni->ni_txparms->maxretry; 2777195618Srpaulo params.ibp_power = ni->ni_txpower; 2778246506Smonthadar 2779246506Smonthadar IEEE80211_NODE_STAT(ni, tx_mgmt); 2780246506Smonthadar 2781246506Smonthadar return ic->ic_raw_xmit(ni, m, ¶ms); 2782195618Srpaulo} 2783195618Srpaulo 2784195618Srpaulo#define ADDSHORT(frm, v) do { \ 2785195618Srpaulo frm[0] = (v) & 0xff; \ 2786195618Srpaulo frm[1] = (v) >> 8; \ 2787195618Srpaulo frm += 2; \ 2788195618Srpaulo} while (0) 2789195618Srpaulo#define ADDWORD(frm, v) do { \ 2790195618Srpaulo frm[0] = (v) & 0xff; \ 2791195618Srpaulo frm[1] = ((v) >> 8) & 0xff; \ 2792195618Srpaulo frm[2] = ((v) >> 16) & 0xff; \ 2793195618Srpaulo frm[3] = ((v) >> 24) & 0xff; \ 2794195618Srpaulo frm += 4; \ 2795195618Srpaulo} while (0) 2796195618Srpaulo 2797195618Srpaulostatic int 2798195618Srpaulomesh_send_action_meshpeering_open(struct ieee80211_node *ni, 2799195618Srpaulo int category, int action, void *args0) 2800195618Srpaulo{ 2801195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 2802195618Srpaulo struct ieee80211com *ic = ni->ni_ic; 2803195618Srpaulo uint16_t *args = args0; 2804195618Srpaulo const struct ieee80211_rateset *rs; 2805195618Srpaulo struct mbuf *m; 2806195618Srpaulo uint8_t *frm; 2807195618Srpaulo 2808195618Srpaulo IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2809195618Srpaulo "send PEER OPEN action: localid 0x%x", args[0]); 2810195618Srpaulo 2811195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2812195618Srpaulo "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2813195618Srpaulo ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2814195618Srpaulo ieee80211_ref_node(ni); 2815195618Srpaulo 2816195618Srpaulo m = ieee80211_getmgtframe(&frm, 2817195618Srpaulo ic->ic_headroom + sizeof(struct ieee80211_frame), 2818195618Srpaulo sizeof(uint16_t) /* action+category */ 2819195618Srpaulo + sizeof(uint16_t) /* capabilites */ 2820230926Srpaulo + 2 + IEEE80211_RATE_SIZE 2821230926Srpaulo + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 2822195618Srpaulo + 2 + IEEE80211_MESHID_LEN 2823230926Srpaulo + sizeof(struct ieee80211_meshconf_ie) 2824195618Srpaulo + sizeof(struct ieee80211_meshpeer_ie) 2825195618Srpaulo ); 2826195618Srpaulo if (m != NULL) { 2827195618Srpaulo /* 2828195618Srpaulo * mesh peer open action frame format: 2829195618Srpaulo * [1] category 2830195618Srpaulo * [1] action 2831195618Srpaulo * [2] capabilities 2832195618Srpaulo * [tlv] rates 2833195618Srpaulo * [tlv] xrates 2834195618Srpaulo * [tlv] mesh id 2835195618Srpaulo * [tlv] mesh conf 2836195618Srpaulo * [tlv] mesh peer link mgmt 2837195618Srpaulo */ 2838195618Srpaulo *frm++ = category; 2839195618Srpaulo *frm++ = action; 2840195618Srpaulo ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2841195618Srpaulo rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2842195618Srpaulo frm = ieee80211_add_rates(frm, rs); 2843195618Srpaulo frm = ieee80211_add_xrates(frm, rs); 2844195618Srpaulo frm = ieee80211_add_meshid(frm, vap); 2845195618Srpaulo frm = ieee80211_add_meshconf(frm, vap); 2846234874Smonthadar frm = ieee80211_add_meshpeer(frm, IEEE80211_ACTION_MESHPEERING_OPEN, 2847195618Srpaulo args[0], 0, 0); 2848195618Srpaulo m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2849246506Smonthadar return mesh_send_action(ni, vap->iv_myaddr, ni->ni_macaddr, m); 2850195618Srpaulo } else { 2851195618Srpaulo vap->iv_stats.is_tx_nobuf++; 2852195618Srpaulo ieee80211_free_node(ni); 2853195618Srpaulo return ENOMEM; 2854195618Srpaulo } 2855195618Srpaulo} 2856195618Srpaulo 2857195618Srpaulostatic int 2858195618Srpaulomesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, 2859195618Srpaulo int category, int action, void *args0) 2860195618Srpaulo{ 2861195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 2862195618Srpaulo struct ieee80211com *ic = ni->ni_ic; 2863195618Srpaulo uint16_t *args = args0; 2864195618Srpaulo const struct ieee80211_rateset *rs; 2865195618Srpaulo struct mbuf *m; 2866195618Srpaulo uint8_t *frm; 2867195618Srpaulo 2868195618Srpaulo IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2869195618Srpaulo "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", 2870195618Srpaulo args[0], args[1]); 2871195618Srpaulo 2872195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2873195618Srpaulo "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2874195618Srpaulo ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2875195618Srpaulo ieee80211_ref_node(ni); 2876195618Srpaulo 2877195618Srpaulo m = ieee80211_getmgtframe(&frm, 2878195618Srpaulo ic->ic_headroom + sizeof(struct ieee80211_frame), 2879195618Srpaulo sizeof(uint16_t) /* action+category */ 2880195618Srpaulo + sizeof(uint16_t) /* capabilites */ 2881195618Srpaulo + sizeof(uint16_t) /* status code */ 2882195618Srpaulo + sizeof(uint16_t) /* AID */ 2883230926Srpaulo + 2 + IEEE80211_RATE_SIZE 2884230926Srpaulo + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) 2885195618Srpaulo + 2 + IEEE80211_MESHID_LEN 2886230926Srpaulo + sizeof(struct ieee80211_meshconf_ie) 2887195618Srpaulo + sizeof(struct ieee80211_meshpeer_ie) 2888195618Srpaulo ); 2889195618Srpaulo if (m != NULL) { 2890195618Srpaulo /* 2891195618Srpaulo * mesh peer confirm action frame format: 2892195618Srpaulo * [1] category 2893195618Srpaulo * [1] action 2894195618Srpaulo * [2] capabilities 2895195618Srpaulo * [2] status code 2896195618Srpaulo * [2] association id (peer ID) 2897195618Srpaulo * [tlv] rates 2898195618Srpaulo * [tlv] xrates 2899195618Srpaulo * [tlv] mesh id 2900195618Srpaulo * [tlv] mesh conf 2901195618Srpaulo * [tlv] mesh peer link mgmt 2902195618Srpaulo */ 2903195618Srpaulo *frm++ = category; 2904195618Srpaulo *frm++ = action; 2905195618Srpaulo ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); 2906195618Srpaulo ADDSHORT(frm, 0); /* status code */ 2907195618Srpaulo ADDSHORT(frm, args[1]); /* AID */ 2908195618Srpaulo rs = ieee80211_get_suprates(ic, ic->ic_curchan); 2909195618Srpaulo frm = ieee80211_add_rates(frm, rs); 2910195618Srpaulo frm = ieee80211_add_xrates(frm, rs); 2911195618Srpaulo frm = ieee80211_add_meshid(frm, vap); 2912195618Srpaulo frm = ieee80211_add_meshconf(frm, vap); 2913195618Srpaulo frm = ieee80211_add_meshpeer(frm, 2914234874Smonthadar IEEE80211_ACTION_MESHPEERING_CONFIRM, 2915195618Srpaulo args[0], args[1], 0); 2916195618Srpaulo m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2917246506Smonthadar return mesh_send_action(ni, vap->iv_myaddr, ni->ni_macaddr, m); 2918195618Srpaulo } else { 2919195618Srpaulo vap->iv_stats.is_tx_nobuf++; 2920195618Srpaulo ieee80211_free_node(ni); 2921195618Srpaulo return ENOMEM; 2922195618Srpaulo } 2923195618Srpaulo} 2924195618Srpaulo 2925195618Srpaulostatic int 2926195618Srpaulomesh_send_action_meshpeering_close(struct ieee80211_node *ni, 2927195618Srpaulo int category, int action, void *args0) 2928195618Srpaulo{ 2929195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 2930195618Srpaulo struct ieee80211com *ic = ni->ni_ic; 2931195618Srpaulo uint16_t *args = args0; 2932195618Srpaulo struct mbuf *m; 2933195618Srpaulo uint8_t *frm; 2934195618Srpaulo 2935195618Srpaulo IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, 2936195618Srpaulo "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d", 2937195618Srpaulo args[0], args[1], args[2]); 2938195618Srpaulo 2939195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2940195618Srpaulo "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2941195618Srpaulo ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2942195618Srpaulo ieee80211_ref_node(ni); 2943195618Srpaulo 2944195618Srpaulo m = ieee80211_getmgtframe(&frm, 2945195618Srpaulo ic->ic_headroom + sizeof(struct ieee80211_frame), 2946195618Srpaulo sizeof(uint16_t) /* action+category */ 2947195618Srpaulo + sizeof(uint16_t) /* reason code */ 2948195618Srpaulo + 2 + IEEE80211_MESHID_LEN 2949230926Srpaulo + sizeof(struct ieee80211_meshpeer_ie) 2950195618Srpaulo ); 2951195618Srpaulo if (m != NULL) { 2952195618Srpaulo /* 2953195618Srpaulo * mesh peer close action frame format: 2954195618Srpaulo * [1] category 2955195618Srpaulo * [1] action 2956195618Srpaulo * [tlv] mesh id 2957195618Srpaulo * [tlv] mesh peer link mgmt 2958195618Srpaulo */ 2959195618Srpaulo *frm++ = category; 2960195618Srpaulo *frm++ = action; 2961195618Srpaulo frm = ieee80211_add_meshid(frm, vap); 2962195618Srpaulo frm = ieee80211_add_meshpeer(frm, 2963234874Smonthadar IEEE80211_ACTION_MESHPEERING_CLOSE, 2964195618Srpaulo args[0], args[1], args[2]); 2965195618Srpaulo m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 2966246506Smonthadar return mesh_send_action(ni, vap->iv_myaddr, ni->ni_macaddr, m); 2967195618Srpaulo } else { 2968195618Srpaulo vap->iv_stats.is_tx_nobuf++; 2969195618Srpaulo ieee80211_free_node(ni); 2970195618Srpaulo return ENOMEM; 2971195618Srpaulo } 2972195618Srpaulo} 2973195618Srpaulo 2974195618Srpaulostatic int 2975232479Sadrianmesh_send_action_meshlmetric(struct ieee80211_node *ni, 2976195618Srpaulo int category, int action, void *arg0) 2977195618Srpaulo{ 2978195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 2979195618Srpaulo struct ieee80211com *ic = ni->ni_ic; 2980232479Sadrian struct ieee80211_meshlmetric_ie *ie = arg0; 2981195618Srpaulo struct mbuf *m; 2982195618Srpaulo uint8_t *frm; 2983195618Srpaulo 2984232479Sadrian if (ie->lm_flags & IEEE80211_MESH_LMETRIC_FLAGS_REQ) { 2985232479Sadrian IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2986232479Sadrian ni, "%s", "send LINK METRIC REQUEST action"); 2987195618Srpaulo } else { 2988232479Sadrian IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 2989232479Sadrian ni, "send LINK METRIC REPLY action: metric 0x%x", 2990232479Sadrian ie->lm_metric); 2991195618Srpaulo } 2992195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 2993195618Srpaulo "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 2994195618Srpaulo ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 2995195618Srpaulo ieee80211_ref_node(ni); 2996195618Srpaulo 2997195618Srpaulo m = ieee80211_getmgtframe(&frm, 2998195618Srpaulo ic->ic_headroom + sizeof(struct ieee80211_frame), 2999232479Sadrian sizeof(uint16_t) + /* action+category */ 3000232479Sadrian sizeof(struct ieee80211_meshlmetric_ie) 3001195618Srpaulo ); 3002195618Srpaulo if (m != NULL) { 3003195618Srpaulo /* 3004232479Sadrian * mesh link metric 3005195618Srpaulo * [1] category 3006195618Srpaulo * [1] action 3007195618Srpaulo * [tlv] mesh link metric 3008195618Srpaulo */ 3009195618Srpaulo *frm++ = category; 3010195618Srpaulo *frm++ = action; 3011232479Sadrian frm = ieee80211_add_meshlmetric(frm, 3012232479Sadrian ie->lm_flags, ie->lm_metric); 3013195618Srpaulo m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 3014246506Smonthadar return mesh_send_action(ni, vap->iv_myaddr, ni->ni_macaddr, m); 3015195618Srpaulo } else { 3016195618Srpaulo vap->iv_stats.is_tx_nobuf++; 3017195618Srpaulo ieee80211_free_node(ni); 3018195618Srpaulo return ENOMEM; 3019195618Srpaulo } 3020195618Srpaulo} 3021195618Srpaulo 3022246506Smonthadarstatic int 3023246506Smonthadarmesh_send_action_meshgate(struct ieee80211_node *ni, 3024246506Smonthadar int category, int action, void *arg0) 3025246506Smonthadar{ 3026246506Smonthadar struct ieee80211vap *vap = ni->ni_vap; 3027246506Smonthadar struct ieee80211com *ic = ni->ni_ic; 3028246506Smonthadar struct ieee80211_meshgann_ie *ie = arg0; 3029246506Smonthadar struct mbuf *m; 3030246506Smonthadar uint8_t *frm; 3031246506Smonthadar 3032246506Smonthadar IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 3033246506Smonthadar "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, 3034246506Smonthadar ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); 3035246506Smonthadar ieee80211_ref_node(ni); 3036246506Smonthadar 3037246506Smonthadar m = ieee80211_getmgtframe(&frm, 3038246506Smonthadar ic->ic_headroom + sizeof(struct ieee80211_frame), 3039246506Smonthadar sizeof(uint16_t) + /* action+category */ 3040246506Smonthadar IEEE80211_MESHGANN_BASE_SZ 3041246506Smonthadar ); 3042246506Smonthadar if (m != NULL) { 3043246506Smonthadar /* 3044246506Smonthadar * mesh link metric 3045246506Smonthadar * [1] category 3046246506Smonthadar * [1] action 3047246506Smonthadar * [tlv] mesh gate annoucement 3048246506Smonthadar */ 3049246506Smonthadar *frm++ = category; 3050246506Smonthadar *frm++ = action; 3051246506Smonthadar frm = ieee80211_add_meshgate(frm, ie); 3052246506Smonthadar m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); 3053246506Smonthadar return mesh_send_action(ni, vap->iv_myaddr, broadcastaddr, m); 3054246506Smonthadar } else { 3055246506Smonthadar vap->iv_stats.is_tx_nobuf++; 3056246506Smonthadar ieee80211_free_node(ni); 3057246506Smonthadar return ENOMEM; 3058246506Smonthadar } 3059246506Smonthadar} 3060246506Smonthadar 3061195618Srpaulostatic void 3062195618Srpaulomesh_peer_timeout_setup(struct ieee80211_node *ni) 3063195618Srpaulo{ 3064195618Srpaulo switch (ni->ni_mlstate) { 3065195618Srpaulo case IEEE80211_NODE_MESH_HOLDING: 3066195618Srpaulo ni->ni_mltval = ieee80211_mesh_holdingtimeout; 3067195618Srpaulo break; 3068195618Srpaulo case IEEE80211_NODE_MESH_CONFIRMRCV: 3069195618Srpaulo ni->ni_mltval = ieee80211_mesh_confirmtimeout; 3070195618Srpaulo break; 3071195618Srpaulo case IEEE80211_NODE_MESH_IDLE: 3072195618Srpaulo ni->ni_mltval = 0; 3073195618Srpaulo break; 3074195618Srpaulo default: 3075195618Srpaulo ni->ni_mltval = ieee80211_mesh_retrytimeout; 3076195618Srpaulo break; 3077195618Srpaulo } 3078195618Srpaulo if (ni->ni_mltval) 3079195618Srpaulo callout_reset(&ni->ni_mltimer, ni->ni_mltval, 3080195618Srpaulo mesh_peer_timeout_cb, ni); 3081195618Srpaulo} 3082195618Srpaulo 3083195618Srpaulo/* 3084195618Srpaulo * Same as above but backoffs timer statisically 50%. 3085195618Srpaulo */ 3086195618Srpaulostatic void 3087195618Srpaulomesh_peer_timeout_backoff(struct ieee80211_node *ni) 3088195618Srpaulo{ 3089195618Srpaulo uint32_t r; 3090195618Srpaulo 3091195618Srpaulo r = arc4random(); 3092195618Srpaulo ni->ni_mltval += r % ni->ni_mltval; 3093195618Srpaulo callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, 3094195618Srpaulo ni); 3095195618Srpaulo} 3096195618Srpaulo 3097195618Srpaulostatic __inline void 3098195618Srpaulomesh_peer_timeout_stop(struct ieee80211_node *ni) 3099195618Srpaulo{ 3100195784Srpaulo callout_drain(&ni->ni_mltimer); 3101195618Srpaulo} 3102195618Srpaulo 3103246497Smonthadarstatic void 3104246497Smonthadarmesh_peer_backoff_cb(void *arg) 3105246497Smonthadar{ 3106246497Smonthadar struct ieee80211_node *ni = (struct ieee80211_node *)arg; 3107246497Smonthadar 3108246497Smonthadar /* After backoff timeout, try to peer automatically again. */ 3109246497Smonthadar ni->ni_mlhcnt = 0; 3110246497Smonthadar} 3111246497Smonthadar 3112195618Srpaulo/* 3113195618Srpaulo * Mesh Peer Link Management FSM timeout handling. 3114195618Srpaulo */ 3115195618Srpaulostatic void 3116195618Srpaulomesh_peer_timeout_cb(void *arg) 3117195618Srpaulo{ 3118195618Srpaulo struct ieee80211_node *ni = (struct ieee80211_node *)arg; 3119195618Srpaulo uint16_t args[3]; 3120195618Srpaulo 3121195618Srpaulo IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, 3122195618Srpaulo ni, "mesh link timeout, state %d, retry counter %d", 3123195618Srpaulo ni->ni_mlstate, ni->ni_mlrcnt); 3124195618Srpaulo 3125195618Srpaulo switch (ni->ni_mlstate) { 3126195618Srpaulo case IEEE80211_NODE_MESH_IDLE: 3127195618Srpaulo case IEEE80211_NODE_MESH_ESTABLISHED: 3128195618Srpaulo break; 3129195618Srpaulo case IEEE80211_NODE_MESH_OPENSNT: 3130195618Srpaulo case IEEE80211_NODE_MESH_OPENRCV: 3131195618Srpaulo if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { 3132195618Srpaulo args[0] = ni->ni_mlpid; 3133195618Srpaulo args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; 3134195618Srpaulo ieee80211_send_action(ni, 3135234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 3136195618Srpaulo IEEE80211_ACTION_MESHPEERING_CLOSE, args); 3137195618Srpaulo ni->ni_mlrcnt = 0; 3138195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 3139195618Srpaulo mesh_peer_timeout_setup(ni); 3140195618Srpaulo } else { 3141195618Srpaulo args[0] = ni->ni_mlpid; 3142195618Srpaulo ieee80211_send_action(ni, 3143234874Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 3144195618Srpaulo IEEE80211_ACTION_MESHPEERING_OPEN, args); 3145195618Srpaulo ni->ni_mlrcnt++; 3146195618Srpaulo mesh_peer_timeout_backoff(ni); 3147195618Srpaulo } 3148195618Srpaulo break; 3149195618Srpaulo case IEEE80211_NODE_MESH_CONFIRMRCV: 3150234876Smonthadar args[0] = ni->ni_mlpid; 3151234876Smonthadar args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; 3152234876Smonthadar ieee80211_send_action(ni, 3153234876Smonthadar IEEE80211_ACTION_CAT_SELF_PROT, 3154234876Smonthadar IEEE80211_ACTION_MESHPEERING_CLOSE, args); 3155234876Smonthadar mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); 3156234876Smonthadar mesh_peer_timeout_setup(ni); 3157195618Srpaulo break; 3158195618Srpaulo case IEEE80211_NODE_MESH_HOLDING: 3159246497Smonthadar ni->ni_mlhcnt++; 3160246497Smonthadar if (ni->ni_mlhcnt >= ieee80211_mesh_maxholding) 3161246497Smonthadar callout_reset(&ni->ni_mlhtimer, 3162246497Smonthadar ieee80211_mesh_backofftimeout, 3163246497Smonthadar mesh_peer_backoff_cb, ni); 3164195618Srpaulo mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); 3165195618Srpaulo break; 3166195618Srpaulo } 3167195618Srpaulo} 3168195618Srpaulo 3169195661Srpaulostatic int 3170195618Srpaulomesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) 3171195618Srpaulo{ 3172195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 3173195618Srpaulo 3174195618Srpaulo if (ie == NULL || ie[1] != ms->ms_idlen) 3175195618Srpaulo return 1; 3176195618Srpaulo return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); 3177195618Srpaulo} 3178195618Srpaulo 3179195618Srpaulo/* 3180195618Srpaulo * Check if we are using the same algorithms for this mesh. 3181195618Srpaulo */ 3182195618Srpaulostatic int 3183195618Srpaulomesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) 3184195618Srpaulo{ 3185195618Srpaulo const struct ieee80211_meshconf_ie *meshconf = 3186195618Srpaulo (const struct ieee80211_meshconf_ie *) ie; 3187195618Srpaulo const struct ieee80211_mesh_state *ms = vap->iv_mesh; 3188195618Srpaulo 3189195618Srpaulo if (meshconf == NULL) 3190195618Srpaulo return 1; 3191197975Srpaulo if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { 3192195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 3193197975Srpaulo "unknown path selection algorithm: 0x%x\n", 3194197975Srpaulo meshconf->conf_pselid); 3195195618Srpaulo return 1; 3196195618Srpaulo } 3197197975Srpaulo if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { 3198195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 3199197975Srpaulo "unknown path metric algorithm: 0x%x\n", 3200197975Srpaulo meshconf->conf_pmetid); 3201195618Srpaulo return 1; 3202195618Srpaulo } 3203197975Srpaulo if (meshconf->conf_ccid != 0) { 3204195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 3205197975Srpaulo "unknown congestion control algorithm: 0x%x\n", 3206197975Srpaulo meshconf->conf_ccid); 3207195618Srpaulo return 1; 3208195618Srpaulo } 3209197975Srpaulo if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { 3210195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 3211197975Srpaulo "unknown sync algorithm: 0x%x\n", 3212197975Srpaulo meshconf->conf_syncid); 3213195618Srpaulo return 1; 3214195618Srpaulo } 3215197975Srpaulo if (meshconf->conf_authid != 0) { 3216195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 3217197975Srpaulo "unknown auth auth algorithm: 0x%x\n", 3218197975Srpaulo meshconf->conf_pselid); 3219195618Srpaulo return 1; 3220195618Srpaulo } 3221195618Srpaulo /* Not accepting peers */ 3222231576Sadrian if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) { 3223195618Srpaulo IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, 3224195618Srpaulo "not accepting peers: 0x%x\n", meshconf->conf_cap); 3225195618Srpaulo return 1; 3226195618Srpaulo } 3227195618Srpaulo return 0; 3228195618Srpaulo} 3229195618Srpaulo 3230195618Srpaulostatic int 3231197413Srpaulomesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, 3232197413Srpaulo const uint8_t *ie) 3233195618Srpaulo{ 3234195618Srpaulo const struct ieee80211_meshpeer_ie *meshpeer = 3235195618Srpaulo (const struct ieee80211_meshpeer_ie *) ie; 3236195618Srpaulo 3237234875Smonthadar if (meshpeer == NULL || 3238234875Smonthadar meshpeer->peer_len < IEEE80211_MPM_BASE_SZ || 3239234875Smonthadar meshpeer->peer_len > IEEE80211_MPM_MAX_SZ) 3240195618Srpaulo return 1; 3241234875Smonthadar if (meshpeer->peer_proto != IEEE80211_MPPID_MPM) { 3242234875Smonthadar IEEE80211_DPRINTF(vap, 3243234875Smonthadar IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, 3244234875Smonthadar "Only MPM protocol is supported (proto: 0x%02X)", 3245234875Smonthadar meshpeer->peer_proto); 3246234875Smonthadar return 1; 3247234875Smonthadar } 3248197413Srpaulo switch (subtype) { 3249234874Smonthadar case IEEE80211_ACTION_MESHPEERING_OPEN: 3250234875Smonthadar if (meshpeer->peer_len != IEEE80211_MPM_BASE_SZ) 3251195618Srpaulo return 1; 3252195618Srpaulo break; 3253234874Smonthadar case IEEE80211_ACTION_MESHPEERING_CONFIRM: 3254234875Smonthadar if (meshpeer->peer_len != IEEE80211_MPM_BASE_SZ + 2) 3255195618Srpaulo return 1; 3256195618Srpaulo break; 3257234874Smonthadar case IEEE80211_ACTION_MESHPEERING_CLOSE: 3258234875Smonthadar if (meshpeer->peer_len < IEEE80211_MPM_BASE_SZ + 2) 3259195618Srpaulo return 1; 3260234875Smonthadar if (meshpeer->peer_len == (IEEE80211_MPM_BASE_SZ + 2) && 3261234875Smonthadar meshpeer->peer_linkid != 0) 3262195618Srpaulo return 1; 3263195618Srpaulo if (meshpeer->peer_rcode == 0) 3264195618Srpaulo return 1; 3265195618Srpaulo break; 3266195618Srpaulo } 3267195618Srpaulo return 0; 3268195618Srpaulo} 3269195618Srpaulo 3270195618Srpaulo/* 3271195618Srpaulo * Add a Mesh ID IE to a frame. 3272195618Srpaulo */ 3273195618Srpaulouint8_t * 3274195618Srpauloieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) 3275195618Srpaulo{ 3276195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 3277195618Srpaulo 3278195618Srpaulo KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); 3279195618Srpaulo 3280195618Srpaulo *frm++ = IEEE80211_ELEMID_MESHID; 3281195618Srpaulo *frm++ = ms->ms_idlen; 3282195618Srpaulo memcpy(frm, ms->ms_id, ms->ms_idlen); 3283195618Srpaulo return frm + ms->ms_idlen; 3284195618Srpaulo} 3285195618Srpaulo 3286195618Srpaulo/* 3287195618Srpaulo * Add a Mesh Configuration IE to a frame. 3288195618Srpaulo * For now just use HWMP routing, Airtime link metric, Null Congestion 3289195618Srpaulo * Signaling, Null Sync Protocol and Null Authentication. 3290195618Srpaulo */ 3291195618Srpaulouint8_t * 3292195618Srpauloieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) 3293195618Srpaulo{ 3294195618Srpaulo const struct ieee80211_mesh_state *ms = vap->iv_mesh; 3295202178Srpaulo uint16_t caps; 3296195618Srpaulo 3297195618Srpaulo KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 3298195618Srpaulo 3299195618Srpaulo *frm++ = IEEE80211_ELEMID_MESHCONF; 3300231576Sadrian *frm++ = IEEE80211_MESH_CONF_SZ; 3301197975Srpaulo *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ 3302197975Srpaulo *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ 3303197975Srpaulo *frm++ = IEEE80211_MESHCONF_CC_DISABLED; 3304197975Srpaulo *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; 3305197975Srpaulo *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; 3306195618Srpaulo /* NB: set the number of neighbors before the rest */ 3307234876Smonthadar *frm = (ms->ms_neighbors > IEEE80211_MESH_MAX_NEIGHBORS ? 3308234876Smonthadar IEEE80211_MESH_MAX_NEIGHBORS : ms->ms_neighbors) << 1; 3309234892Smonthadar if (ms->ms_flags & IEEE80211_MESHFLAGS_GATE) 3310234892Smonthadar *frm |= IEEE80211_MESHCONF_FORM_GATE; 3311195618Srpaulo frm += 1; 3312202178Srpaulo caps = 0; 3313195618Srpaulo if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) 3314202178Srpaulo caps |= IEEE80211_MESHCONF_CAP_AP; 3315195618Srpaulo if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) 3316202178Srpaulo caps |= IEEE80211_MESHCONF_CAP_FWRD; 3317231576Sadrian *frm++ = caps; 3318195618Srpaulo return frm; 3319195618Srpaulo} 3320195618Srpaulo 3321195618Srpaulo/* 3322195618Srpaulo * Add a Mesh Peer Management IE to a frame. 3323195618Srpaulo */ 3324195618Srpaulouint8_t * 3325195618Srpauloieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, 3326195618Srpaulo uint16_t peerid, uint16_t reason) 3327195618Srpaulo{ 3328197413Srpaulo 3329195618Srpaulo KASSERT(localid != 0, ("localid == 0")); 3330195618Srpaulo 3331195618Srpaulo *frm++ = IEEE80211_ELEMID_MESHPEER; 3332195618Srpaulo switch (subtype) { 3333234874Smonthadar case IEEE80211_ACTION_MESHPEERING_OPEN: 3334234875Smonthadar *frm++ = IEEE80211_MPM_BASE_SZ; /* length */ 3335234875Smonthadar ADDSHORT(frm, IEEE80211_MPPID_MPM); /* proto */ 3336234875Smonthadar ADDSHORT(frm, localid); /* local ID */ 3337195618Srpaulo break; 3338234874Smonthadar case IEEE80211_ACTION_MESHPEERING_CONFIRM: 3339195618Srpaulo KASSERT(peerid != 0, ("sending peer confirm without peer id")); 3340234875Smonthadar *frm++ = IEEE80211_MPM_BASE_SZ + 2; /* length */ 3341234875Smonthadar ADDSHORT(frm, IEEE80211_MPPID_MPM); /* proto */ 3342234875Smonthadar ADDSHORT(frm, localid); /* local ID */ 3343234875Smonthadar ADDSHORT(frm, peerid); /* peer ID */ 3344195618Srpaulo break; 3345234874Smonthadar case IEEE80211_ACTION_MESHPEERING_CLOSE: 3346195618Srpaulo if (peerid) 3347234875Smonthadar *frm++ = IEEE80211_MPM_MAX_SZ; /* length */ 3348195618Srpaulo else 3349234875Smonthadar *frm++ = IEEE80211_MPM_BASE_SZ + 2; /* length */ 3350234875Smonthadar ADDSHORT(frm, IEEE80211_MPPID_MPM); /* proto */ 3351195618Srpaulo ADDSHORT(frm, localid); /* local ID */ 3352195618Srpaulo if (peerid) 3353195618Srpaulo ADDSHORT(frm, peerid); /* peer ID */ 3354195618Srpaulo ADDSHORT(frm, reason); 3355195618Srpaulo break; 3356195618Srpaulo } 3357195618Srpaulo return frm; 3358195618Srpaulo} 3359195618Srpaulo 3360195618Srpaulo/* 3361195618Srpaulo * Compute an Airtime Link Metric for the link with this node. 3362195618Srpaulo * 3363195618Srpaulo * Based on Draft 3.0 spec (11B.10, p.149). 3364195618Srpaulo */ 3365195618Srpaulo/* 3366195618Srpaulo * Max 802.11s overhead. 3367195618Srpaulo */ 3368195618Srpaulo#define IEEE80211_MESH_MAXOVERHEAD \ 3369195618Srpaulo (sizeof(struct ieee80211_qosframe_addr4) \ 3370234878Smonthadar + sizeof(struct ieee80211_meshcntl_ae10) \ 3371195618Srpaulo + sizeof(struct llc) \ 3372195618Srpaulo + IEEE80211_ADDR_LEN \ 3373195618Srpaulo + IEEE80211_WEP_IVLEN \ 3374195618Srpaulo + IEEE80211_WEP_KIDLEN \ 3375195618Srpaulo + IEEE80211_WEP_CRCLEN \ 3376195618Srpaulo + IEEE80211_WEP_MICLEN \ 3377195618Srpaulo + IEEE80211_CRC_LEN) 3378195618Srpaulouint32_t 3379195618Srpaulomesh_airtime_calc(struct ieee80211_node *ni) 3380195618Srpaulo{ 3381195618Srpaulo#define M_BITS 8 3382195618Srpaulo#define S_FACTOR (2 * M_BITS) 3383195618Srpaulo struct ieee80211com *ic = ni->ni_ic; 3384195618Srpaulo struct ifnet *ifp = ni->ni_vap->iv_ifp; 3385195618Srpaulo const static int nbits = 8192 << M_BITS; 3386195618Srpaulo uint32_t overhead, rate, errrate; 3387195618Srpaulo uint64_t res; 3388195618Srpaulo 3389195618Srpaulo /* Time to transmit a frame */ 3390195618Srpaulo rate = ni->ni_txrate; 3391195618Srpaulo overhead = ieee80211_compute_duration(ic->ic_rt, 3392195618Srpaulo ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; 3393195618Srpaulo /* Error rate in percentage */ 3394195618Srpaulo /* XXX assuming small failures are ok */ 3395195618Srpaulo errrate = (((ifp->if_oerrors + 3396195618Srpaulo ifp->if_ierrors) / 100) << M_BITS) / 100; 3397195618Srpaulo res = (overhead + (nbits / rate)) * 3398195618Srpaulo ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); 3399195618Srpaulo 3400195618Srpaulo return (uint32_t)(res >> S_FACTOR); 3401195618Srpaulo#undef M_BITS 3402195618Srpaulo#undef S_FACTOR 3403195618Srpaulo} 3404195618Srpaulo 3405195618Srpaulo/* 3406195618Srpaulo * Add a Mesh Link Metric report IE to a frame. 3407195618Srpaulo */ 3408195618Srpaulouint8_t * 3409232479Sadrianieee80211_add_meshlmetric(uint8_t *frm, uint8_t flags, uint32_t metric) 3410195618Srpaulo{ 3411195618Srpaulo *frm++ = IEEE80211_ELEMID_MESHLINK; 3412232479Sadrian *frm++ = 5; 3413232479Sadrian *frm++ = flags; 3414195618Srpaulo ADDWORD(frm, metric); 3415195618Srpaulo return frm; 3416195618Srpaulo} 3417246506Smonthadar 3418246506Smonthadar/* 3419246506Smonthadar * Add a Mesh Gate Announcement IE to a frame. 3420246506Smonthadar */ 3421246506Smonthadaruint8_t * 3422246506Smonthadarieee80211_add_meshgate(uint8_t *frm, struct ieee80211_meshgann_ie *ie) 3423246506Smonthadar{ 3424246506Smonthadar *frm++ = IEEE80211_ELEMID_MESHGANN; /* ie */ 3425246506Smonthadar *frm++ = IEEE80211_MESHGANN_BASE_SZ; /* len */ 3426246506Smonthadar *frm++ = ie->gann_flags; 3427246506Smonthadar *frm++ = ie->gann_hopcount; 3428246506Smonthadar *frm++ = ie->gann_ttl; 3429246506Smonthadar IEEE80211_ADDR_COPY(frm, ie->gann_addr); 3430246506Smonthadar frm += 6; 3431246506Smonthadar ADDWORD(frm, ie->gann_seq); 3432246506Smonthadar ADDSHORT(frm, ie->gann_interval); 3433246506Smonthadar return frm; 3434246506Smonthadar} 3435195618Srpaulo#undef ADDSHORT 3436195618Srpaulo#undef ADDWORD 3437195618Srpaulo 3438195618Srpaulo/* 3439195618Srpaulo * Initialize any mesh-specific node state. 3440195618Srpaulo */ 3441195618Srpaulovoid 3442195618Srpauloieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) 3443195618Srpaulo{ 3444195618Srpaulo ni->ni_flags |= IEEE80211_NODE_QOS; 3445195618Srpaulo callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE); 3446246497Smonthadar callout_init(&ni->ni_mlhtimer, CALLOUT_MPSAFE); 3447195618Srpaulo} 3448195618Srpaulo 3449195618Srpaulo/* 3450195618Srpaulo * Cleanup any mesh-specific node state. 3451195618Srpaulo */ 3452195618Srpaulovoid 3453195618Srpauloieee80211_mesh_node_cleanup(struct ieee80211_node *ni) 3454195618Srpaulo{ 3455195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 3456195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 3457195618Srpaulo 3458195618Srpaulo callout_drain(&ni->ni_mltimer); 3459246497Smonthadar callout_drain(&ni->ni_mlhtimer); 3460195618Srpaulo /* NB: short-circuit callbacks after mesh_vdetach */ 3461195618Srpaulo if (vap->iv_mesh != NULL) 3462195618Srpaulo ms->ms_ppath->mpp_peerdown(ni); 3463195618Srpaulo} 3464195618Srpaulo 3465195618Srpaulovoid 3466195618Srpauloieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) 3467195618Srpaulo{ 3468195618Srpaulo ni->ni_meshidlen = ie[1]; 3469195618Srpaulo memcpy(ni->ni_meshid, ie + 2, ie[1]); 3470195618Srpaulo} 3471195618Srpaulo 3472195618Srpaulo/* 3473195618Srpaulo * Setup mesh-specific node state on neighbor discovery. 3474195618Srpaulo */ 3475195618Srpaulovoid 3476195618Srpauloieee80211_mesh_init_neighbor(struct ieee80211_node *ni, 3477195618Srpaulo const struct ieee80211_frame *wh, 3478195618Srpaulo const struct ieee80211_scanparams *sp) 3479195618Srpaulo{ 3480195618Srpaulo ieee80211_parse_meshid(ni, sp->meshid); 3481195618Srpaulo} 3482195618Srpaulo 3483198242Srpaulovoid 3484198242Srpauloieee80211_mesh_update_beacon(struct ieee80211vap *vap, 3485198242Srpaulo struct ieee80211_beacon_offsets *bo) 3486198242Srpaulo{ 3487198242Srpaulo KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); 3488198242Srpaulo 3489198242Srpaulo if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { 3490198242Srpaulo (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); 3491198242Srpaulo clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); 3492198242Srpaulo } 3493198242Srpaulo} 3494198242Srpaulo 3495195618Srpaulostatic int 3496195618Srpaulomesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 3497195618Srpaulo{ 3498195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 3499195618Srpaulo uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 3500195618Srpaulo struct ieee80211_mesh_route *rt; 3501195618Srpaulo struct ieee80211req_mesh_route *imr; 3502195618Srpaulo size_t len, off; 3503195618Srpaulo uint8_t *p; 3504195618Srpaulo int error; 3505195618Srpaulo 3506195618Srpaulo if (vap->iv_opmode != IEEE80211_M_MBSS) 3507195618Srpaulo return ENOSYS; 3508195618Srpaulo 3509195618Srpaulo error = 0; 3510195618Srpaulo switch (ireq->i_type) { 3511195618Srpaulo case IEEE80211_IOC_MESH_ID: 3512195618Srpaulo ireq->i_len = ms->ms_idlen; 3513195618Srpaulo memcpy(tmpmeshid, ms->ms_id, ireq->i_len); 3514195618Srpaulo error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); 3515195618Srpaulo break; 3516195618Srpaulo case IEEE80211_IOC_MESH_AP: 3517195618Srpaulo ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; 3518195618Srpaulo break; 3519195618Srpaulo case IEEE80211_IOC_MESH_FWRD: 3520195618Srpaulo ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; 3521195618Srpaulo break; 3522234892Smonthadar case IEEE80211_IOC_MESH_GATE: 3523234892Smonthadar ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_GATE) != 0; 3524234892Smonthadar break; 3525195618Srpaulo case IEEE80211_IOC_MESH_TTL: 3526195618Srpaulo ireq->i_val = ms->ms_ttl; 3527195618Srpaulo break; 3528195618Srpaulo case IEEE80211_IOC_MESH_RTCMD: 3529195618Srpaulo switch (ireq->i_val) { 3530195618Srpaulo case IEEE80211_MESH_RTCMD_LIST: 3531195618Srpaulo len = 0; 3532195618Srpaulo MESH_RT_LOCK(ms); 3533195618Srpaulo TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 3534195618Srpaulo len += sizeof(*imr); 3535195618Srpaulo } 3536195618Srpaulo MESH_RT_UNLOCK(ms); 3537195618Srpaulo if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { 3538195618Srpaulo ireq->i_len = len; 3539195618Srpaulo return ENOMEM; 3540195618Srpaulo } 3541195618Srpaulo ireq->i_len = len; 3542195784Srpaulo /* XXX M_WAIT? */ 3543195618Srpaulo p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO); 3544195618Srpaulo if (p == NULL) 3545195618Srpaulo return ENOMEM; 3546195618Srpaulo off = 0; 3547195618Srpaulo MESH_RT_LOCK(ms); 3548195618Srpaulo TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { 3549195618Srpaulo if (off >= len) 3550195618Srpaulo break; 3551195618Srpaulo imr = (struct ieee80211req_mesh_route *) 3552195618Srpaulo (p + off); 3553195618Srpaulo IEEE80211_ADDR_COPY(imr->imr_dest, 3554195618Srpaulo rt->rt_dest); 3555195618Srpaulo IEEE80211_ADDR_COPY(imr->imr_nexthop, 3556195618Srpaulo rt->rt_nexthop); 3557195618Srpaulo imr->imr_metric = rt->rt_metric; 3558195618Srpaulo imr->imr_nhops = rt->rt_nhops; 3559234877Smonthadar imr->imr_lifetime = 3560234877Smonthadar ieee80211_mesh_rt_update(rt, 0); 3561195784Srpaulo imr->imr_lastmseq = rt->rt_lastmseq; 3562234877Smonthadar imr->imr_flags = rt->rt_flags; /* last */ 3563195618Srpaulo off += sizeof(*imr); 3564195618Srpaulo } 3565195618Srpaulo MESH_RT_UNLOCK(ms); 3566195618Srpaulo error = copyout(p, (uint8_t *)ireq->i_data, 3567195618Srpaulo ireq->i_len); 3568195618Srpaulo free(p, M_TEMP); 3569195618Srpaulo break; 3570195618Srpaulo case IEEE80211_MESH_RTCMD_FLUSH: 3571195618Srpaulo case IEEE80211_MESH_RTCMD_ADD: 3572195618Srpaulo case IEEE80211_MESH_RTCMD_DELETE: 3573195618Srpaulo return EINVAL; 3574195618Srpaulo default: 3575195618Srpaulo return ENOSYS; 3576195618Srpaulo } 3577195618Srpaulo break; 3578195618Srpaulo case IEEE80211_IOC_MESH_PR_METRIC: 3579195618Srpaulo len = strlen(ms->ms_pmetric->mpm_descr); 3580195618Srpaulo if (ireq->i_len < len) 3581195618Srpaulo return EINVAL; 3582195618Srpaulo ireq->i_len = len; 3583195618Srpaulo error = copyout(ms->ms_pmetric->mpm_descr, 3584195618Srpaulo (uint8_t *)ireq->i_data, len); 3585195618Srpaulo break; 3586195618Srpaulo case IEEE80211_IOC_MESH_PR_PATH: 3587195618Srpaulo len = strlen(ms->ms_ppath->mpp_descr); 3588195618Srpaulo if (ireq->i_len < len) 3589195618Srpaulo return EINVAL; 3590195618Srpaulo ireq->i_len = len; 3591195618Srpaulo error = copyout(ms->ms_ppath->mpp_descr, 3592195618Srpaulo (uint8_t *)ireq->i_data, len); 3593195618Srpaulo break; 3594195618Srpaulo default: 3595195618Srpaulo return ENOSYS; 3596195618Srpaulo } 3597195618Srpaulo 3598195618Srpaulo return error; 3599195618Srpaulo} 3600195618SrpauloIEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); 3601195618Srpaulo 3602195618Srpaulostatic int 3603195618Srpaulomesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) 3604195618Srpaulo{ 3605195618Srpaulo struct ieee80211_mesh_state *ms = vap->iv_mesh; 3606195618Srpaulo uint8_t tmpmeshid[IEEE80211_NWID_LEN]; 3607195618Srpaulo uint8_t tmpaddr[IEEE80211_ADDR_LEN]; 3608195618Srpaulo char tmpproto[IEEE80211_MESH_PROTO_DSZ]; 3609195618Srpaulo int error; 3610195618Srpaulo 3611195618Srpaulo if (vap->iv_opmode != IEEE80211_M_MBSS) 3612195618Srpaulo return ENOSYS; 3613195618Srpaulo 3614195618Srpaulo error = 0; 3615195618Srpaulo switch (ireq->i_type) { 3616195618Srpaulo case IEEE80211_IOC_MESH_ID: 3617195618Srpaulo if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) 3618195618Srpaulo return EINVAL; 3619195618Srpaulo error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); 3620195784Srpaulo if (error != 0) 3621195618Srpaulo break; 3622195618Srpaulo memset(ms->ms_id, 0, IEEE80211_NWID_LEN); 3623195618Srpaulo ms->ms_idlen = ireq->i_len; 3624195618Srpaulo memcpy(ms->ms_id, tmpmeshid, ireq->i_len); 3625195784Srpaulo error = ENETRESET; 3626195618Srpaulo break; 3627195618Srpaulo case IEEE80211_IOC_MESH_AP: 3628195618Srpaulo if (ireq->i_val) 3629195618Srpaulo ms->ms_flags |= IEEE80211_MESHFLAGS_AP; 3630195618Srpaulo else 3631195618Srpaulo ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; 3632195784Srpaulo error = ENETRESET; 3633195618Srpaulo break; 3634195618Srpaulo case IEEE80211_IOC_MESH_FWRD: 3635195618Srpaulo if (ireq->i_val) 3636195618Srpaulo ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; 3637195618Srpaulo else 3638195618Srpaulo ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; 3639246506Smonthadar mesh_gatemode_setup(vap); 3640195618Srpaulo break; 3641234892Smonthadar case IEEE80211_IOC_MESH_GATE: 3642234892Smonthadar if (ireq->i_val) 3643234892Smonthadar ms->ms_flags |= IEEE80211_MESHFLAGS_GATE; 3644234892Smonthadar else 3645234892Smonthadar ms->ms_flags &= ~IEEE80211_MESHFLAGS_GATE; 3646234892Smonthadar break; 3647195618Srpaulo case IEEE80211_IOC_MESH_TTL: 3648195618Srpaulo ms->ms_ttl = (uint8_t) ireq->i_val; 3649195618Srpaulo break; 3650195618Srpaulo case IEEE80211_IOC_MESH_RTCMD: 3651195618Srpaulo switch (ireq->i_val) { 3652195618Srpaulo case IEEE80211_MESH_RTCMD_LIST: 3653195618Srpaulo return EINVAL; 3654195618Srpaulo case IEEE80211_MESH_RTCMD_FLUSH: 3655195618Srpaulo ieee80211_mesh_rt_flush(vap); 3656195618Srpaulo break; 3657195618Srpaulo case IEEE80211_MESH_RTCMD_ADD: 3658195618Srpaulo if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) || 3659195618Srpaulo IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data)) 3660195618Srpaulo return EINVAL; 3661195618Srpaulo error = copyin(ireq->i_data, &tmpaddr, 3662195618Srpaulo IEEE80211_ADDR_LEN); 3663195784Srpaulo if (error == 0) 3664195618Srpaulo ieee80211_mesh_discover(vap, tmpaddr, NULL); 3665195618Srpaulo break; 3666195618Srpaulo case IEEE80211_MESH_RTCMD_DELETE: 3667195618Srpaulo ieee80211_mesh_rt_del(vap, ireq->i_data); 3668195618Srpaulo break; 3669195618Srpaulo default: 3670195618Srpaulo return ENOSYS; 3671195618Srpaulo } 3672195618Srpaulo break; 3673195618Srpaulo case IEEE80211_IOC_MESH_PR_METRIC: 3674195618Srpaulo error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 3675195784Srpaulo if (error == 0) { 3676195784Srpaulo error = mesh_select_proto_metric(vap, tmpproto); 3677195784Srpaulo if (error == 0) 3678195784Srpaulo error = ENETRESET; 3679195784Srpaulo } 3680195618Srpaulo break; 3681195618Srpaulo case IEEE80211_IOC_MESH_PR_PATH: 3682195618Srpaulo error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); 3683195784Srpaulo if (error == 0) { 3684195784Srpaulo error = mesh_select_proto_path(vap, tmpproto); 3685195784Srpaulo if (error == 0) 3686195784Srpaulo error = ENETRESET; 3687195784Srpaulo } 3688195618Srpaulo break; 3689195618Srpaulo default: 3690195618Srpaulo return ENOSYS; 3691195618Srpaulo } 3692195618Srpaulo return error; 3693195618Srpaulo} 3694195618SrpauloIEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); 3695