ieee80211_freebsd.c revision 183210
1249259Sdim/*- 2249259Sdim * Copyright (c) 2003-2008 Sam Leffler, Errno Consulting 3249259Sdim * All rights reserved. 4249259Sdim * 5249259Sdim * Redistribution and use in source and binary forms, with or without 6249259Sdim * modification, are permitted provided that the following conditions 7249259Sdim * are met: 8249259Sdim * 1. Redistributions of source code must retain the above copyright 9249259Sdim * notice, this list of conditions and the following disclaimer. 10249259Sdim * 2. Redistributions in binary form must reproduce the above copyright 11249259Sdim * notice, this list of conditions and the following disclaimer in the 12249259Sdim * documentation and/or other materials provided with the distribution. 13249259Sdim * 14249259Sdim * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15249259Sdim * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16249259Sdim * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17249259Sdim * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18249259Sdim * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19249259Sdim * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20249259Sdim * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21249259Sdim * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22249259Sdim * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23249259Sdim * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24249259Sdim */ 25249259Sdim 26249259Sdim#include <sys/cdefs.h> 27249259Sdim__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_freebsd.c 183210 2008-09-20 19:38:37Z thompsa $"); 28249259Sdim 29249259Sdim/* 30249259Sdim * IEEE 802.11 support (FreeBSD-specific code) 31249259Sdim */ 32263508Sdim#include "opt_wlan.h" 33249259Sdim 34249259Sdim#include <sys/param.h> 35249259Sdim#include <sys/kernel.h> 36249259Sdim#include <sys/systm.h> 37249259Sdim#include <sys/linker.h> 38249259Sdim#include <sys/mbuf.h> 39249259Sdim#include <sys/module.h> 40249259Sdim#include <sys/proc.h> 41249259Sdim#include <sys/sysctl.h> 42249259Sdim 43249259Sdim#include <sys/socket.h> 44249259Sdim 45263508Sdim#include <net/if.h> 46249259Sdim#include <net/if_clone.h> 47249259Sdim#include <net/if_media.h> 48249259Sdim#include <net/if_types.h> 49249259Sdim#include <net/ethernet.h> 50249259Sdim#include <net/route.h> 51249259Sdim 52249259Sdim#include <net80211/ieee80211_var.h> 53249259Sdim 54249259SdimSYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD, 0, "IEEE 80211 parameters"); 55249259Sdim 56263508Sdim#ifdef IEEE80211_DEBUG 57249259Sdimint ieee80211_debug = 0; 58249259SdimSYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug, 59249259Sdim 0, "debugging printfs"); 60249259Sdim#endif 61249259Sdimextern int ieee80211_recv_bar_ena; 62249259SdimSYSCTL_INT(_net_wlan, OID_AUTO, recv_bar, CTLFLAG_RW, &ieee80211_recv_bar_ena, 63249259Sdim 0, "BAR frame processing (ena/dis)"); 64249259Sdimextern int ieee80211_nol_timeout; 65249259SdimSYSCTL_INT(_net_wlan, OID_AUTO, nol_timeout, CTLFLAG_RW, 66249259Sdim &ieee80211_nol_timeout, 0, "NOL timeout (secs)"); 67249259Sdimextern int ieee80211_cac_timeout; 68249259SdimSYSCTL_INT(_net_wlan, OID_AUTO, cac_timeout, CTLFLAG_RW, 69249259Sdim &ieee80211_cac_timeout, 0, "CAC timeout (secs)"); 70249259Sdim 71249259SdimMALLOC_DEFINE(M_80211_COM, "80211com", "802.11 com state"); 72263508Sdim 73249259Sdim/* 74249259Sdim * Allocate/free com structure in conjunction with ifnet; 75249259Sdim * these routines are registered with if_register_com_alloc 76249259Sdim * below and are called automatically by the ifnet code 77249259Sdim * when the ifnet of the parent device is created. 78249259Sdim */ 79249259Sdimstatic void * 80249259Sdimwlan_alloc(u_char type, struct ifnet *ifp) 81249259Sdim{ 82249259Sdim struct ieee80211com *ic; 83249259Sdim 84249259Sdim ic = malloc(sizeof(struct ieee80211com), M_80211_COM, M_WAITOK|M_ZERO); 85249259Sdim ic->ic_ifp = ifp; 86249259Sdim 87249259Sdim return (ic); 88249259Sdim} 89249259Sdim 90249259Sdimstatic void 91249259Sdimwlan_free(void *ic, u_char type) 92249259Sdim{ 93249259Sdim free(ic, M_80211_COM); 94249259Sdim} 95249259Sdim 96249259Sdimstatic int 97249259Sdimwlan_clone_create(struct if_clone *ifc, int unit, caddr_t params) 98249259Sdim{ 99249259Sdim struct ieee80211_clone_params cp; 100251662Sdim struct ieee80211vap *vap; 101251662Sdim struct ieee80211com *ic; 102249259Sdim struct ifnet *ifp; 103249259Sdim int error; 104249259Sdim 105249259Sdim error = copyin(params, &cp, sizeof(cp)); 106249259Sdim if (error) 107249259Sdim return error; 108249259Sdim ifp = ifunit(cp.icp_parent); 109249259Sdim if (ifp == NULL) 110249259Sdim return ENXIO; 111249259Sdim /* XXX move printfs to DIAGNOSTIC before release */ 112249259Sdim if (ifp->if_type != IFT_IEEE80211) { 113249259Sdim if_printf(ifp, "%s: reject, not an 802.11 device\n", __func__); 114249259Sdim return ENXIO; 115249259Sdim } 116249259Sdim if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) { 117249259Sdim if_printf(ifp, "%s: invalid opmode %d\n", 118249259Sdim __func__, cp.icp_opmode); 119249259Sdim return EINVAL; 120249259Sdim } 121249259Sdim ic = ifp->if_l2com; 122249259Sdim if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) { 123249259Sdim if_printf(ifp, "%s mode not supported\n", 124249259Sdim ieee80211_opmode_name[cp.icp_opmode]); 125249259Sdim return EOPNOTSUPP; 126249259Sdim } 127249259Sdim vap = ic->ic_vap_create(ic, ifc->ifc_name, unit, 128249259Sdim cp.icp_opmode, cp.icp_flags, cp.icp_bssid, 129249259Sdim cp.icp_flags & IEEE80211_CLONE_MACADDR ? 130249259Sdim cp.icp_macaddr : ic->ic_myaddr); 131249259Sdim return (vap == NULL ? EIO : 0); 132249259Sdim} 133249259Sdim 134249259Sdimstatic void 135249259Sdimwlan_clone_destroy(struct ifnet *ifp) 136249259Sdim{ 137249259Sdim struct ieee80211vap *vap = ifp->if_softc; 138249259Sdim struct ieee80211com *ic = vap->iv_ic; 139249259Sdim 140249259Sdim ic->ic_vap_delete(vap); 141249259Sdim} 142249259SdimIFC_SIMPLE_DECLARE(wlan, 0); 143249259Sdim 144249259Sdimvoid 145249259Sdimieee80211_vap_destroy(struct ieee80211vap *vap) 146249259Sdim{ 147249259Sdim if_clone_destroyif(&wlan_cloner, vap->iv_ifp); 148249259Sdim} 149249259Sdim 150249259Sdimstatic int 151249259Sdimieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS) 152249259Sdim{ 153249259Sdim int msecs = ticks_to_msecs(*(int *)arg1); 154249259Sdim int error, t; 155249259Sdim 156249259Sdim error = sysctl_handle_int(oidp, &msecs, 0, req); 157249259Sdim if (error || !req->newptr) 158249259Sdim return error; 159249259Sdim t = msecs_to_ticks(msecs); 160249259Sdim *(int *)arg1 = (t < 1) ? 1 : t; 161249259Sdim return 0; 162249259Sdim} 163249259Sdim 164249259Sdim#ifdef IEEE80211_AMPDU_AGE 165249259Sdimextern int ieee80211_ampdu_age; 166249259SdimSYSCTL_PROC(_net_wlan, OID_AUTO, ampdu_age, CTLFLAG_RW, 167249259Sdim &ieee80211_ampdu_age, 0, ieee80211_sysctl_msecs_ticks, "I", 168249259Sdim "AMPDU max reorder age (ms)"); 169249259Sdim#endif 170249259Sdimextern int ieee80211_addba_timeout; 171249259SdimSYSCTL_PROC(_net_wlan, OID_AUTO, addba_timeout, CTLFLAG_RW, 172249259Sdim &ieee80211_addba_timeout, 0, ieee80211_sysctl_msecs_ticks, "I", 173249259Sdim "ADDBA request timeout (ms)"); 174249259Sdimextern int ieee80211_addba_backoff; 175249259SdimSYSCTL_PROC(_net_wlan, OID_AUTO, addba_backoff, CTLFLAG_RW, 176249259Sdim &ieee80211_addba_backoff, 0, ieee80211_sysctl_msecs_ticks, "I", 177249259Sdim "ADDBA request backoff (ms)"); 178249259Sdimextern int ieee80211_addba_maxtries; 179249259SdimSYSCTL_INT(_net_wlan, OID_AUTO, addba_maxtries, CTLFLAG_RW, 180249259Sdim &ieee80211_addba_maxtries, 0, "max ADDBA requests sent before backoff"); 181249259Sdim 182249259Sdimstatic int 183249259Sdimieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS) 184249259Sdim{ 185249259Sdim int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT; 186249259Sdim int error; 187249259Sdim 188249259Sdim error = sysctl_handle_int(oidp, &inact, 0, req); 189249259Sdim if (error || !req->newptr) 190249259Sdim return error; 191249259Sdim *(int *)arg1 = inact / IEEE80211_INACT_WAIT; 192249259Sdim return 0; 193249259Sdim} 194249259Sdim 195249259Sdimstatic int 196249259Sdimieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS) 197249259Sdim{ 198249259Sdim struct ieee80211com *ic = arg1; 199249259Sdim const char *name = ic->ic_ifp->if_xname; 200249259Sdim 201249259Sdim return SYSCTL_OUT(req, name, strlen(name)); 202249259Sdim} 203249259Sdim 204249259Sdimstatic int 205249259Sdimieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS) 206249259Sdim{ 207249259Sdim struct ieee80211com *ic = arg1; 208249259Sdim int t = 0, error; 209249259Sdim 210249259Sdim error = sysctl_handle_int(oidp, &t, 0, req); 211249259Sdim if (error || !req->newptr) 212249259Sdim return error; 213249259Sdim IEEE80211_LOCK(ic); 214249259Sdim ieee80211_dfs_notify_radar(ic, ic->ic_curchan); 215249259Sdim IEEE80211_UNLOCK(ic); 216249259Sdim return 0; 217249259Sdim} 218249259Sdim 219249259Sdimvoid 220249259Sdimieee80211_sysctl_attach(struct ieee80211com *ic) 221249259Sdim{ 222249259Sdim} 223249259Sdim 224249259Sdimvoid 225249259Sdimieee80211_sysctl_detach(struct ieee80211com *ic) 226249259Sdim{ 227249259Sdim} 228249259Sdim 229249259Sdimvoid 230249259Sdimieee80211_sysctl_vattach(struct ieee80211vap *vap) 231249259Sdim{ 232249259Sdim struct ifnet *ifp = vap->iv_ifp; 233249259Sdim struct sysctl_ctx_list *ctx; 234249259Sdim struct sysctl_oid *oid; 235249259Sdim char num[14]; /* sufficient for 32 bits */ 236249259Sdim 237249259Sdim MALLOC(ctx, struct sysctl_ctx_list *, sizeof(struct sysctl_ctx_list), 238249259Sdim M_DEVBUF, M_NOWAIT | M_ZERO); 239249259Sdim if (ctx == NULL) { 240249259Sdim if_printf(ifp, "%s: cannot allocate sysctl context!\n", 241249259Sdim __func__); 242249259Sdim return; 243249259Sdim } 244249259Sdim sysctl_ctx_init(ctx); 245251662Sdim snprintf(num, sizeof(num), "%u", ifp->if_dunit); 246251662Sdim oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan), 247251662Sdim OID_AUTO, num, CTLFLAG_RD, NULL, ""); 248249259Sdim SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 249249259Sdim "%parent", CTLFLAG_RD, vap->iv_ic, 0, 250249259Sdim ieee80211_sysctl_parent, "A", "parent device"); 251249259Sdim SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 252249259Sdim "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0, 253249259Sdim "driver capabilities"); 254249259Sdim#ifdef IEEE80211_DEBUG 255249259Sdim vap->iv_debug = ieee80211_debug; 256249259Sdim SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 257249259Sdim "debug", CTLFLAG_RW, &vap->iv_debug, 0, 258249259Sdim "control debugging printfs"); 259249259Sdim#endif 260249259Sdim SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 261249259Sdim "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0, 262249259Sdim "consecutive beacon misses before scanning"); 263249259Sdim /* XXX inherit from tunables */ 264249259Sdim SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 265249259Sdim "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0, 266249259Sdim ieee80211_sysctl_inact, "I", 267249259Sdim "station inactivity timeout (sec)"); 268249259Sdim SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 269249259Sdim "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0, 270249259Sdim ieee80211_sysctl_inact, "I", 271249259Sdim "station inactivity probe timeout (sec)"); 272249259Sdim SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 273249259Sdim "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0, 274249259Sdim ieee80211_sysctl_inact, "I", 275249259Sdim "station authentication timeout (sec)"); 276249259Sdim SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 277249259Sdim "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0, 278249259Sdim ieee80211_sysctl_inact, "I", 279249259Sdim "station initial state timeout (sec)"); 280249259Sdim if (vap->iv_htcaps & IEEE80211_HTC_HT) { 281249259Sdim SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 282249259Sdim "ampdu_mintraffic_bk", CTLFLAG_RW, 283249259Sdim &vap->iv_ampdu_mintraffic[WME_AC_BK], 0, 284249259Sdim "BK traffic tx aggr threshold (pps)"); 285249259Sdim SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 286249259Sdim "ampdu_mintraffic_be", CTLFLAG_RW, 287249259Sdim &vap->iv_ampdu_mintraffic[WME_AC_BE], 0, 288249259Sdim "BE traffic tx aggr threshold (pps)"); 289249259Sdim SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 290249259Sdim "ampdu_mintraffic_vo", CTLFLAG_RW, 291249259Sdim &vap->iv_ampdu_mintraffic[WME_AC_VO], 0, 292249259Sdim "VO traffic tx aggr threshold (pps)"); 293249259Sdim SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 294249259Sdim "ampdu_mintraffic_vi", CTLFLAG_RW, 295249259Sdim &vap->iv_ampdu_mintraffic[WME_AC_VI], 0, 296249259Sdim "VI traffic tx aggr threshold (pps)"); 297249259Sdim } 298249259Sdim if (vap->iv_caps & IEEE80211_C_DFS) { 299249259Sdim SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 300249259Sdim "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0, 301249259Sdim ieee80211_sysctl_radar, "I", "simulare radar event"); 302249259Sdim } 303249259Sdim vap->iv_sysctl = ctx; 304249259Sdim vap->iv_oid = oid; 305249259Sdim} 306249259Sdim 307249259Sdimvoid 308249259Sdimieee80211_sysctl_vdetach(struct ieee80211vap *vap) 309249259Sdim{ 310249259Sdim 311249259Sdim if (vap->iv_sysctl != NULL) { 312249259Sdim sysctl_ctx_free(vap->iv_sysctl); 313249259Sdim FREE(vap->iv_sysctl, M_DEVBUF); 314249259Sdim vap->iv_sysctl = NULL; 315249259Sdim } 316249259Sdim} 317249259Sdim 318249259Sdimint 319249259Sdimieee80211_node_dectestref(struct ieee80211_node *ni) 320249259Sdim{ 321249259Sdim /* XXX need equivalent of atomic_dec_and_test */ 322249259Sdim atomic_subtract_int(&ni->ni_refcnt, 1); 323249259Sdim return atomic_cmpset_int(&ni->ni_refcnt, 0, 1); 324249259Sdim} 325249259Sdim 326249259Sdimvoid 327249259Sdimieee80211_drain_ifq(struct ifqueue *ifq) 328249259Sdim{ 329249259Sdim struct ieee80211_node *ni; 330249259Sdim struct mbuf *m; 331249259Sdim 332249259Sdim for (;;) { 333249259Sdim IF_DEQUEUE(ifq, m); 334249259Sdim if (m == NULL) 335249259Sdim break; 336249259Sdim 337249259Sdim ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 338249259Sdim KASSERT(ni != NULL, ("frame w/o node")); 339249259Sdim ieee80211_free_node(ni); 340249259Sdim m->m_pkthdr.rcvif = NULL; 341249259Sdim 342249259Sdim m_freem(m); 343249259Sdim } 344249259Sdim} 345249259Sdim 346249259Sdimvoid 347249259Sdimieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap) 348249259Sdim{ 349249259Sdim struct ieee80211_node *ni; 350249259Sdim struct mbuf *m, **mprev; 351249259Sdim 352249259Sdim IF_LOCK(ifq); 353249259Sdim mprev = &ifq->ifq_head; 354249259Sdim while ((m = *mprev) != NULL) { 355249259Sdim ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 356249259Sdim if (ni != NULL && ni->ni_vap == vap) { 357249259Sdim *mprev = m->m_nextpkt; /* remove from list */ 358249259Sdim ifq->ifq_len--; 359249259Sdim 360249259Sdim m_freem(m); 361249259Sdim ieee80211_free_node(ni); /* reclaim ref */ 362249259Sdim } else 363249259Sdim mprev = &m->m_nextpkt; 364249259Sdim } 365249259Sdim /* recalculate tail ptr */ 366249259Sdim m = ifq->ifq_head; 367249259Sdim for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt) 368249259Sdim ; 369249259Sdim ifq->ifq_tail = m; 370249259Sdim IF_UNLOCK(ifq); 371249259Sdim} 372249259Sdim 373249259Sdim/* 374249259Sdim * As above, for mbufs allocated with m_gethdr/MGETHDR 375249259Sdim * or initialized by M_COPY_PKTHDR. 376249259Sdim */ 377249259Sdim#define MC_ALIGN(m, len) \ 378249259Sdimdo { \ 379249259Sdim (m)->m_data += (MCLBYTES - (len)) &~ (sizeof(long) - 1); \ 380249259Sdim} while (/* CONSTCOND */ 0) 381249259Sdim 382249259Sdim/* 383249259Sdim * Allocate and setup a management frame of the specified 384249259Sdim * size. We return the mbuf and a pointer to the start 385249259Sdim * of the contiguous data area that's been reserved based 386249259Sdim * on the packet length. The data area is forced to 32-bit 387249259Sdim * alignment and the buffer length to a multiple of 4 bytes. 388249259Sdim * This is done mainly so beacon frames (that require this) 389249259Sdim * can use this interface too. 390249259Sdim */ 391249259Sdimstruct mbuf * 392249259Sdimieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen) 393249259Sdim{ 394249259Sdim struct mbuf *m; 395249259Sdim u_int len; 396249259Sdim 397249259Sdim /* 398249259Sdim * NB: we know the mbuf routines will align the data area 399249259Sdim * so we don't need to do anything special. 400249259Sdim */ 401249259Sdim len = roundup2(headroom + pktlen, 4); 402249259Sdim KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len)); 403249259Sdim if (len < MINCLSIZE) { 404249259Sdim m = m_gethdr(M_NOWAIT, MT_DATA); 405249259Sdim /* 406249259Sdim * Align the data in case additional headers are added. 407249259Sdim * This should only happen when a WEP header is added 408249259Sdim * which only happens for shared key authentication mgt 409249259Sdim * frames which all fit in MHLEN. 410249259Sdim */ 411249259Sdim if (m != NULL) 412249259Sdim MH_ALIGN(m, len); 413249259Sdim } else { 414249259Sdim m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 415249259Sdim if (m != NULL) 416249259Sdim MC_ALIGN(m, len); 417249259Sdim } 418249259Sdim if (m != NULL) { 419249259Sdim m->m_data += headroom; 420249259Sdim *frm = m->m_data; 421249259Sdim } 422249259Sdim return m; 423249259Sdim} 424249259Sdim 425249259Sdimint 426249259Sdimieee80211_add_callback(struct mbuf *m, 427249259Sdim void (*func)(struct ieee80211_node *, void *, int), void *arg) 428249259Sdim{ 429249259Sdim struct m_tag *mtag; 430249259Sdim struct ieee80211_cb *cb; 431249259Sdim 432249259Sdim mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, 433249259Sdim sizeof(struct ieee80211_cb), M_NOWAIT); 434249259Sdim if (mtag == NULL) 435249259Sdim return 0; 436249259Sdim 437249259Sdim cb = (struct ieee80211_cb *)(mtag+1); 438249259Sdim cb->func = func; 439249259Sdim cb->arg = arg; 440249259Sdim m_tag_prepend(m, mtag); 441249259Sdim m->m_flags |= M_TXCB; 442249259Sdim return 1; 443249259Sdim} 444249259Sdim 445249259Sdimvoid 446249259Sdimieee80211_process_callback(struct ieee80211_node *ni, 447249259Sdim struct mbuf *m, int status) 448249259Sdim{ 449249259Sdim struct m_tag *mtag; 450249259Sdim 451249259Sdim mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL); 452249259Sdim if (mtag != NULL) { 453249259Sdim struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1); 454249259Sdim cb->func(ni, cb->arg, status); 455249259Sdim } 456249259Sdim} 457249259Sdim 458249259Sdim#include <sys/libkern.h> 459249259Sdim 460249259Sdimvoid 461249259Sdimget_random_bytes(void *p, size_t n) 462249259Sdim{ 463249259Sdim uint8_t *dp = p; 464249259Sdim 465249259Sdim while (n > 0) { 466249259Sdim uint32_t v = arc4random(); 467249259Sdim size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n; 468249259Sdim bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n); 469249259Sdim dp += sizeof(uint32_t), n -= nb; 470249259Sdim } 471249259Sdim} 472249259Sdim 473249259Sdim/* 474249259Sdim * Helper function for events that pass just a single mac address. 475249259Sdim */ 476249259Sdimstatic void 477249259Sdimnotify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN]) 478249259Sdim{ 479249259Sdim struct ieee80211_join_event iev; 480249259Sdim 481249259Sdim memset(&iev, 0, sizeof(iev)); 482249259Sdim IEEE80211_ADDR_COPY(iev.iev_addr, mac); 483249259Sdim rt_ieee80211msg(ifp, op, &iev, sizeof(iev)); 484249259Sdim} 485249259Sdim 486249259Sdimvoid 487249259Sdimieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc) 488249259Sdim{ 489249259Sdim struct ieee80211vap *vap = ni->ni_vap; 490249259Sdim struct ifnet *ifp = vap->iv_ifp; 491249259Sdim 492249259Sdim IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join", 493249259Sdim (ni == vap->iv_bss) ? "bss " : ""); 494249259Sdim 495249259Sdim if (ni == vap->iv_bss) { 496249259Sdim notify_macaddr(ifp, newassoc ? 497249259Sdim RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid); 498249259Sdim if_link_state_change(ifp, LINK_STATE_UP); 499249259Sdim } else { 500249259Sdim notify_macaddr(ifp, newassoc ? 501249259Sdim RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr); 502249259Sdim } 503249259Sdim} 504249259Sdim 505249259Sdimvoid 506249259Sdimieee80211_notify_node_leave(struct ieee80211_node *ni) 507249259Sdim{ 508249259Sdim struct ieee80211vap *vap = ni->ni_vap; 509249259Sdim struct ifnet *ifp = vap->iv_ifp; 510249259Sdim 511249259Sdim IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave", 512249259Sdim (ni == vap->iv_bss) ? "bss " : ""); 513249259Sdim 514249259Sdim if (ni == vap->iv_bss) { 515249259Sdim rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0); 516249259Sdim if_link_state_change(ifp, LINK_STATE_DOWN); 517249259Sdim } else { 518249259Sdim /* fire off wireless event station leaving */ 519249259Sdim notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr); 520249259Sdim } 521249259Sdim} 522249259Sdim 523249259Sdimvoid 524249259Sdimieee80211_notify_scan_done(struct ieee80211vap *vap) 525249259Sdim{ 526249259Sdim struct ifnet *ifp = vap->iv_ifp; 527249259Sdim 528249259Sdim IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done"); 529249259Sdim 530249259Sdim /* dispatch wireless event indicating scan completed */ 531249259Sdim rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0); 532249259Sdim} 533249259Sdim 534249259Sdimvoid 535249259Sdimieee80211_notify_replay_failure(struct ieee80211vap *vap, 536249259Sdim const struct ieee80211_frame *wh, const struct ieee80211_key *k, 537249259Sdim u_int64_t rsc) 538249259Sdim{ 539249259Sdim struct ifnet *ifp = vap->iv_ifp; 540249259Sdim 541249259Sdim IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, 542249259Sdim "%s replay detected <rsc %ju, csc %ju, keyix %u rxkeyix %u>", 543249259Sdim k->wk_cipher->ic_name, (intmax_t) rsc, 544249259Sdim (intmax_t) k->wk_keyrsc[IEEE80211_NONQOS_TID], 545249259Sdim k->wk_keyix, k->wk_rxkeyix); 546249259Sdim 547249259Sdim if (ifp != NULL) { /* NB: for cipher test modules */ 548249259Sdim struct ieee80211_replay_event iev; 549249259Sdim 550249259Sdim IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 551249259Sdim IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 552249259Sdim iev.iev_cipher = k->wk_cipher->ic_cipher; 553249259Sdim if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE) 554249259Sdim iev.iev_keyix = k->wk_rxkeyix; 555249259Sdim else 556249259Sdim iev.iev_keyix = k->wk_keyix; 557249259Sdim iev.iev_keyrsc = k->wk_keyrsc[0]; /* XXX need tid */ 558249259Sdim iev.iev_rsc = rsc; 559249259Sdim rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev)); 560249259Sdim } 561249259Sdim} 562249259Sdim 563249259Sdimvoid 564249259Sdimieee80211_notify_michael_failure(struct ieee80211vap *vap, 565249259Sdim const struct ieee80211_frame *wh, u_int keyix) 566249259Sdim{ 567249259Sdim struct ifnet *ifp = vap->iv_ifp; 568249259Sdim 569249259Sdim IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, 570249259Sdim "michael MIC verification failed <keyix %u>", keyix); 571249259Sdim vap->iv_stats.is_rx_tkipmic++; 572249259Sdim 573249259Sdim if (ifp != NULL) { /* NB: for cipher test modules */ 574249259Sdim struct ieee80211_michael_event iev; 575249259Sdim 576249259Sdim IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 577249259Sdim IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 578249259Sdim iev.iev_cipher = IEEE80211_CIPHER_TKIP; 579249259Sdim iev.iev_keyix = keyix; 580249259Sdim rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev)); 581249259Sdim } 582249259Sdim} 583249259Sdim 584249259Sdimvoid 585249259Sdimieee80211_notify_wds_discover(struct ieee80211_node *ni) 586249259Sdim{ 587249259Sdim struct ieee80211vap *vap = ni->ni_vap; 588249259Sdim struct ifnet *ifp = vap->iv_ifp; 589249259Sdim 590249259Sdim notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr); 591249259Sdim} 592249259Sdim 593249259Sdimvoid 594249259Sdimieee80211_notify_csa(struct ieee80211com *ic, 595249259Sdim const struct ieee80211_channel *c, int mode, int count) 596249259Sdim{ 597249259Sdim struct ifnet *ifp = ic->ic_ifp; 598249259Sdim struct ieee80211_csa_event iev; 599249259Sdim 600249259Sdim memset(&iev, 0, sizeof(iev)); 601249259Sdim iev.iev_flags = c->ic_flags; 602249259Sdim iev.iev_freq = c->ic_freq; 603249259Sdim iev.iev_ieee = c->ic_ieee; 604249259Sdim iev.iev_mode = mode; 605249259Sdim iev.iev_count = count; 606249259Sdim rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev)); 607249259Sdim} 608249259Sdim 609249259Sdimvoid 610249259Sdimieee80211_notify_radar(struct ieee80211com *ic, 611249259Sdim const struct ieee80211_channel *c) 612249259Sdim{ 613249259Sdim struct ifnet *ifp = ic->ic_ifp; 614249259Sdim struct ieee80211_radar_event iev; 615249259Sdim 616249259Sdim memset(&iev, 0, sizeof(iev)); 617249259Sdim iev.iev_flags = c->ic_flags; 618249259Sdim iev.iev_freq = c->ic_freq; 619249259Sdim iev.iev_ieee = c->ic_ieee; 620249259Sdim rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev)); 621249259Sdim} 622249259Sdim 623249259Sdimvoid 624249259Sdimieee80211_notify_cac(struct ieee80211com *ic, 625249259Sdim const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type) 626249259Sdim{ 627249259Sdim struct ifnet *ifp = ic->ic_ifp; 628249259Sdim struct ieee80211_cac_event iev; 629249259Sdim 630249259Sdim memset(&iev, 0, sizeof(iev)); 631249259Sdim iev.iev_flags = c->ic_flags; 632249259Sdim iev.iev_freq = c->ic_freq; 633249259Sdim iev.iev_ieee = c->ic_ieee; 634249259Sdim iev.iev_type = type; 635249259Sdim rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev)); 636249259Sdim} 637249259Sdim 638249259Sdimvoid 639249259Sdimieee80211_notify_node_deauth(struct ieee80211_node *ni) 640249259Sdim{ 641249259Sdim struct ieee80211vap *vap = ni->ni_vap; 642249259Sdim struct ifnet *ifp = vap->iv_ifp; 643249259Sdim 644249259Sdim IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth"); 645249259Sdim 646249259Sdim notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr); 647249259Sdim} 648249259Sdim 649249259Sdimvoid 650249259Sdimieee80211_notify_node_auth(struct ieee80211_node *ni) 651249259Sdim{ 652249259Sdim struct ieee80211vap *vap = ni->ni_vap; 653249259Sdim struct ifnet *ifp = vap->iv_ifp; 654249259Sdim 655249259Sdim IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth"); 656249259Sdim 657249259Sdim notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr); 658249259Sdim} 659249259Sdim 660249259Sdimvoid 661249259Sdimieee80211_notify_country(struct ieee80211vap *vap, 662249259Sdim const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2]) 663249259Sdim{ 664249259Sdim struct ifnet *ifp = vap->iv_ifp; 665249259Sdim struct ieee80211_country_event iev; 666249259Sdim 667249259Sdim memset(&iev, 0, sizeof(iev)); 668249259Sdim IEEE80211_ADDR_COPY(iev.iev_addr, bssid); 669249259Sdim iev.iev_cc[0] = cc[0]; 670249259Sdim iev.iev_cc[1] = cc[1]; 671249259Sdim rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev)); 672249259Sdim} 673249259Sdim 674249259Sdimvoid 675249259Sdimieee80211_notify_radio(struct ieee80211com *ic, int state) 676249259Sdim{ 677249259Sdim struct ifnet *ifp = ic->ic_ifp; 678249259Sdim struct ieee80211_radio_event iev; 679249259Sdim 680249259Sdim memset(&iev, 0, sizeof(iev)); 681249259Sdim iev.iev_state = state; 682249259Sdim rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev)); 683249259Sdim} 684249259Sdim 685249259Sdimvoid 686249259Sdimieee80211_load_module(const char *modname) 687249259Sdim{ 688249259Sdim 689249259Sdim#ifdef notyet 690249259Sdim (void)kern_kldload(curthread, modname, NULL); 691249259Sdim#else 692249259Sdim printf("%s: load the %s module by hand for now.\n", __func__, modname); 693249259Sdim#endif 694249259Sdim} 695249259Sdim 696249259Sdim/* 697249259Sdim * Module glue. 698249259Sdim * 699249259Sdim * NB: the module name is "wlan" for compatibility with NetBSD. 700249259Sdim */ 701249259Sdimstatic int 702249259Sdimwlan_modevent(module_t mod, int type, void *unused) 703249259Sdim{ 704249259Sdim switch (type) { 705249259Sdim case MOD_LOAD: 706249259Sdim if (bootverbose) 707249259Sdim printf("wlan: <802.11 Link Layer>\n"); 708249259Sdim if_clone_attach(&wlan_cloner); 709249259Sdim if_register_com_alloc(IFT_IEEE80211, wlan_alloc, wlan_free); 710249259Sdim return 0; 711249259Sdim case MOD_UNLOAD: 712249259Sdim if_deregister_com_alloc(IFT_IEEE80211); 713249259Sdim if_clone_detach(&wlan_cloner); 714249259Sdim return 0; 715249259Sdim } 716249259Sdim return EINVAL; 717249259Sdim} 718249259Sdim 719249259Sdimstatic moduledata_t wlan_mod = { 720249259Sdim "wlan", 721249259Sdim wlan_modevent, 722249259Sdim 0 723249259Sdim}; 724249259SdimDECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 725249259SdimMODULE_VERSION(wlan, 1); 726249259SdimMODULE_DEPEND(wlan, ether, 1, 1, 1); 727249259Sdim