The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211_freebsd.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2003-2009 Sam Leffler, Errno Consulting
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD$");
   30 
   31 /*
   32  * IEEE 802.11 support (FreeBSD-specific code)
   33  */
   34 #include "opt_wlan.h"
   35 
   36 #include <sys/param.h>
   37 #include <sys/systm.h> 
   38 #include <sys/eventhandler.h>
   39 #include <sys/kernel.h>
   40 #include <sys/linker.h>
   41 #include <sys/malloc.h>
   42 #include <sys/mbuf.h>   
   43 #include <sys/module.h>
   44 #include <sys/priv.h>
   45 #include <sys/proc.h>
   46 #include <sys/sysctl.h>
   47 
   48 #include <sys/socket.h>
   49 
   50 #include <net/bpf.h>
   51 #include <net/debugnet.h>
   52 #include <net/if.h>
   53 #include <net/if_var.h>
   54 #include <net/if_dl.h>
   55 #include <net/if_clone.h>
   56 #include <net/if_media.h>
   57 #include <net/if_types.h>
   58 #include <net/ethernet.h>
   59 #include <net/route.h>
   60 #include <net/vnet.h>
   61 
   62 #include <net80211/ieee80211_var.h>
   63 #include <net80211/ieee80211_input.h>
   64 
   65 DEBUGNET_DEFINE(ieee80211);
   66 SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
   67     "IEEE 80211 parameters");
   68 
   69 #ifdef IEEE80211_DEBUG
   70 static int      ieee80211_debug = 0;
   71 SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
   72             0, "debugging printfs");
   73 #endif
   74 
   75 static const char wlanname[] = "wlan";
   76 static struct if_clone *wlan_cloner;
   77 
   78 /*
   79  * priv(9) NET80211 checks.
   80  * Return 0 if operation is allowed, E* (usually EPERM) otherwise.
   81  */
   82 int
   83 ieee80211_priv_check_vap_getkey(u_long cmd __unused,
   84      struct ieee80211vap *vap __unused, struct ifnet *ifp __unused)
   85 {
   86 
   87         return (priv_check(curthread, PRIV_NET80211_VAP_GETKEY));
   88 }
   89 
   90 int
   91 ieee80211_priv_check_vap_manage(u_long cmd __unused,
   92      struct ieee80211vap *vap __unused, struct ifnet *ifp __unused)
   93 {
   94 
   95         return (priv_check(curthread, PRIV_NET80211_VAP_MANAGE));
   96 }
   97 
   98 int
   99 ieee80211_priv_check_vap_setmac(u_long cmd __unused,
  100      struct ieee80211vap *vap __unused, struct ifnet *ifp __unused)
  101 {
  102 
  103         return (priv_check(curthread, PRIV_NET80211_VAP_SETMAC));
  104 }
  105 
  106 int
  107 ieee80211_priv_check_create_vap(u_long cmd __unused,
  108     struct ieee80211vap *vap __unused, struct ifnet *ifp __unused)
  109 {
  110 
  111         return (priv_check(curthread, PRIV_NET80211_CREATE_VAP));
  112 }
  113 
  114 static int
  115 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
  116 {
  117         struct ieee80211_clone_params cp;
  118         struct ieee80211vap *vap;
  119         struct ieee80211com *ic;
  120         int error;
  121 
  122         error = ieee80211_priv_check_create_vap(0, NULL, NULL);
  123         if (error)
  124                 return error;
  125 
  126         error = copyin(params, &cp, sizeof(cp));
  127         if (error)
  128                 return error;
  129         ic = ieee80211_find_com(cp.icp_parent);
  130         if (ic == NULL)
  131                 return ENXIO;
  132         if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
  133                 ic_printf(ic, "%s: invalid opmode %d\n", __func__,
  134                     cp.icp_opmode);
  135                 return EINVAL;
  136         }
  137         if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
  138                 ic_printf(ic, "%s mode not supported\n",
  139                     ieee80211_opmode_name[cp.icp_opmode]);
  140                 return EOPNOTSUPP;
  141         }
  142         if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
  143 #ifdef IEEE80211_SUPPORT_TDMA
  144             (ic->ic_caps & IEEE80211_C_TDMA) == 0
  145 #else
  146             (1)
  147 #endif
  148         ) {
  149                 ic_printf(ic, "TDMA not supported\n");
  150                 return EOPNOTSUPP;
  151         }
  152         vap = ic->ic_vap_create(ic, wlanname, unit,
  153                         cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
  154                         cp.icp_flags & IEEE80211_CLONE_MACADDR ?
  155                             cp.icp_macaddr : ic->ic_macaddr);
  156 
  157         if (vap == NULL)
  158                 return (EIO);
  159 
  160 #ifdef DEBUGNET
  161         if (ic->ic_debugnet_meth != NULL)
  162                 DEBUGNET_SET(vap->iv_ifp, ieee80211);
  163 #endif
  164         return (0);
  165 }
  166 
  167 static void
  168 wlan_clone_destroy(struct ifnet *ifp)
  169 {
  170         struct ieee80211vap *vap = ifp->if_softc;
  171         struct ieee80211com *ic = vap->iv_ic;
  172 
  173         ic->ic_vap_delete(vap);
  174 }
  175 
  176 void
  177 ieee80211_vap_destroy(struct ieee80211vap *vap)
  178 {
  179         CURVNET_SET(vap->iv_ifp->if_vnet);
  180         if_clone_destroyif(wlan_cloner, vap->iv_ifp);
  181         CURVNET_RESTORE();
  182 }
  183 
  184 int
  185 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
  186 {
  187         int msecs = ticks_to_msecs(*(int *)arg1);
  188         int error;
  189 
  190         error = sysctl_handle_int(oidp, &msecs, 0, req);
  191         if (error || !req->newptr)
  192                 return error;
  193         *(int *)arg1 = msecs_to_ticks(msecs);
  194         return 0;
  195 }
  196 
  197 static int
  198 ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
  199 {
  200         int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
  201         int error;
  202 
  203         error = sysctl_handle_int(oidp, &inact, 0, req);
  204         if (error || !req->newptr)
  205                 return error;
  206         *(int *)arg1 = inact / IEEE80211_INACT_WAIT;
  207         return 0;
  208 }
  209 
  210 static int
  211 ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
  212 {
  213         struct ieee80211com *ic = arg1;
  214 
  215         return SYSCTL_OUT_STR(req, ic->ic_name);
  216 }
  217 
  218 static int
  219 ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
  220 {
  221         struct ieee80211com *ic = arg1;
  222         int t = 0, error;
  223 
  224         error = sysctl_handle_int(oidp, &t, 0, req);
  225         if (error || !req->newptr)
  226                 return error;
  227         IEEE80211_LOCK(ic);
  228         ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
  229         IEEE80211_UNLOCK(ic);
  230         return 0;
  231 }
  232 
  233 /*
  234  * For now, just restart everything.
  235  *
  236  * Later on, it'd be nice to have a separate VAP restart to
  237  * full-device restart.
  238  */
  239 static int
  240 ieee80211_sysctl_vap_restart(SYSCTL_HANDLER_ARGS)
  241 {
  242         struct ieee80211vap *vap = arg1;
  243         int t = 0, error;
  244 
  245         error = sysctl_handle_int(oidp, &t, 0, req);
  246         if (error || !req->newptr)
  247                 return error;
  248 
  249         ieee80211_restart_all(vap->iv_ic);
  250         return 0;
  251 }
  252 
  253 void
  254 ieee80211_sysctl_attach(struct ieee80211com *ic)
  255 {
  256 }
  257 
  258 void
  259 ieee80211_sysctl_detach(struct ieee80211com *ic)
  260 {
  261 }
  262 
  263 void
  264 ieee80211_sysctl_vattach(struct ieee80211vap *vap)
  265 {
  266         struct ifnet *ifp = vap->iv_ifp;
  267         struct sysctl_ctx_list *ctx;
  268         struct sysctl_oid *oid;
  269         char num[14];                   /* sufficient for 32 bits */
  270 
  271         ctx = (struct sysctl_ctx_list *) IEEE80211_MALLOC(sizeof(struct sysctl_ctx_list),
  272                 M_DEVBUF, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
  273         if (ctx == NULL) {
  274                 if_printf(ifp, "%s: cannot allocate sysctl context!\n",
  275                         __func__);
  276                 return;
  277         }
  278         sysctl_ctx_init(ctx);
  279         snprintf(num, sizeof(num), "%u", ifp->if_dunit);
  280         oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
  281             OID_AUTO, num, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "");
  282         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  283             "%parent", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
  284             vap->iv_ic, 0, ieee80211_sysctl_parent, "A", "parent device");
  285         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  286                 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
  287                 "driver capabilities");
  288 #ifdef IEEE80211_DEBUG
  289         vap->iv_debug = ieee80211_debug;
  290         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  291                 "debug", CTLFLAG_RW, &vap->iv_debug, 0,
  292                 "control debugging printfs");
  293 #endif
  294         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  295                 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
  296                 "consecutive beacon misses before scanning");
  297         /* XXX inherit from tunables */
  298         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  299             "inact_run", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
  300             &vap->iv_inact_run, 0, ieee80211_sysctl_inact, "I",
  301             "station inactivity timeout (sec)");
  302         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  303             "inact_probe", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
  304             &vap->iv_inact_probe, 0, ieee80211_sysctl_inact, "I",
  305             "station inactivity probe timeout (sec)");
  306         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  307             "inact_auth", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
  308             &vap->iv_inact_auth, 0, ieee80211_sysctl_inact, "I",
  309             "station authentication timeout (sec)");
  310         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  311             "inact_init", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
  312             &vap->iv_inact_init, 0, ieee80211_sysctl_inact, "I",
  313             "station initial state timeout (sec)");
  314         if (vap->iv_htcaps & IEEE80211_HTC_HT) {
  315                 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  316                         "ampdu_mintraffic_bk", CTLFLAG_RW,
  317                         &vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
  318                         "BK traffic tx aggr threshold (pps)");
  319                 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  320                         "ampdu_mintraffic_be", CTLFLAG_RW,
  321                         &vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
  322                         "BE traffic tx aggr threshold (pps)");
  323                 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  324                         "ampdu_mintraffic_vo", CTLFLAG_RW,
  325                         &vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
  326                         "VO traffic tx aggr threshold (pps)");
  327                 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  328                         "ampdu_mintraffic_vi", CTLFLAG_RW,
  329                         &vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
  330                         "VI traffic tx aggr threshold (pps)");
  331         }
  332 
  333         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  334             "force_restart", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
  335             vap, 0, ieee80211_sysctl_vap_restart, "I", "force a VAP restart");
  336 
  337         if (vap->iv_caps & IEEE80211_C_DFS) {
  338                 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
  339                     "radar", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
  340                     vap->iv_ic, 0, ieee80211_sysctl_radar, "I",
  341                     "simulate radar event");
  342         }
  343         vap->iv_sysctl = ctx;
  344         vap->iv_oid = oid;
  345 }
  346 
  347 void
  348 ieee80211_sysctl_vdetach(struct ieee80211vap *vap)
  349 {
  350 
  351         if (vap->iv_sysctl != NULL) {
  352                 sysctl_ctx_free(vap->iv_sysctl);
  353                 IEEE80211_FREE(vap->iv_sysctl, M_DEVBUF);
  354                 vap->iv_sysctl = NULL;
  355         }
  356 }
  357 
  358 int
  359 ieee80211_com_vincref(struct ieee80211vap *vap)
  360 {
  361         uint32_t ostate;
  362 
  363         ostate = atomic_fetchadd_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
  364 
  365         if (ostate & IEEE80211_COM_DETACHED) {
  366                 atomic_subtract_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
  367                 return (ENETDOWN);
  368         }
  369 
  370         if (_IEEE80211_MASKSHIFT(ostate, IEEE80211_COM_REF) ==
  371             IEEE80211_COM_REF_MAX) {
  372                 atomic_subtract_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
  373                 return (EOVERFLOW);
  374         }
  375 
  376         return (0);
  377 }
  378 
  379 void
  380 ieee80211_com_vdecref(struct ieee80211vap *vap)
  381 {
  382         uint32_t ostate;
  383 
  384         ostate = atomic_fetchadd_32(&vap->iv_com_state, -IEEE80211_COM_REF_ADD);
  385 
  386         KASSERT(_IEEE80211_MASKSHIFT(ostate, IEEE80211_COM_REF) != 0,
  387             ("com reference counter underflow"));
  388 
  389         (void) ostate;
  390 }
  391 
  392 void
  393 ieee80211_com_vdetach(struct ieee80211vap *vap)
  394 {
  395         int sleep_time;
  396 
  397         sleep_time = msecs_to_ticks(250);
  398         atomic_set_32(&vap->iv_com_state, IEEE80211_COM_DETACHED);
  399         while (_IEEE80211_MASKSHIFT(atomic_load_32(&vap->iv_com_state),
  400             IEEE80211_COM_REF) != 0)
  401                 pause("comref", sleep_time);
  402 }
  403 
  404 int
  405 ieee80211_node_dectestref(struct ieee80211_node *ni)
  406 {
  407         /* XXX need equivalent of atomic_dec_and_test */
  408         atomic_subtract_int(&ni->ni_refcnt, 1);
  409         return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
  410 }
  411 
  412 void
  413 ieee80211_drain_ifq(struct ifqueue *ifq)
  414 {
  415         struct ieee80211_node *ni;
  416         struct mbuf *m;
  417 
  418         for (;;) {
  419                 IF_DEQUEUE(ifq, m);
  420                 if (m == NULL)
  421                         break;
  422 
  423                 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
  424                 KASSERT(ni != NULL, ("frame w/o node"));
  425                 ieee80211_free_node(ni);
  426                 m->m_pkthdr.rcvif = NULL;
  427 
  428                 m_freem(m);
  429         }
  430 }
  431 
  432 void
  433 ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
  434 {
  435         struct ieee80211_node *ni;
  436         struct mbuf *m, **mprev;
  437 
  438         IF_LOCK(ifq);
  439         mprev = &ifq->ifq_head;
  440         while ((m = *mprev) != NULL) {
  441                 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
  442                 if (ni != NULL && ni->ni_vap == vap) {
  443                         *mprev = m->m_nextpkt;          /* remove from list */
  444                         ifq->ifq_len--;
  445 
  446                         m_freem(m);
  447                         ieee80211_free_node(ni);        /* reclaim ref */
  448                 } else
  449                         mprev = &m->m_nextpkt;
  450         }
  451         /* recalculate tail ptr */
  452         m = ifq->ifq_head;
  453         for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
  454                 ;
  455         ifq->ifq_tail = m;
  456         IF_UNLOCK(ifq);
  457 }
  458 
  459 /*
  460  * As above, for mbufs allocated with m_gethdr/MGETHDR
  461  * or initialized by M_COPY_PKTHDR.
  462  */
  463 #define MC_ALIGN(m, len)                                                \
  464 do {                                                                    \
  465         (m)->m_data += rounddown2(MCLBYTES - (len), sizeof(long));      \
  466 } while (/* CONSTCOND */ 0)
  467 
  468 /*
  469  * Allocate and setup a management frame of the specified
  470  * size.  We return the mbuf and a pointer to the start
  471  * of the contiguous data area that's been reserved based
  472  * on the packet length.  The data area is forced to 32-bit
  473  * alignment and the buffer length to a multiple of 4 bytes.
  474  * This is done mainly so beacon frames (that require this)
  475  * can use this interface too.
  476  */
  477 struct mbuf *
  478 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
  479 {
  480         struct mbuf *m;
  481         u_int len;
  482 
  483         /*
  484          * NB: we know the mbuf routines will align the data area
  485          *     so we don't need to do anything special.
  486          */
  487         len = roundup2(headroom + pktlen, 4);
  488         KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
  489         if (len < MINCLSIZE) {
  490                 m = m_gethdr(M_NOWAIT, MT_DATA);
  491                 /*
  492                  * Align the data in case additional headers are added.
  493                  * This should only happen when a WEP header is added
  494                  * which only happens for shared key authentication mgt
  495                  * frames which all fit in MHLEN.
  496                  */
  497                 if (m != NULL)
  498                         M_ALIGN(m, len);
  499         } else {
  500                 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
  501                 if (m != NULL)
  502                         MC_ALIGN(m, len);
  503         }
  504         if (m != NULL) {
  505                 m->m_data += headroom;
  506                 *frm = m->m_data;
  507         }
  508         return m;
  509 }
  510 
  511 #ifndef __NO_STRICT_ALIGNMENT
  512 /*
  513  * Re-align the payload in the mbuf.  This is mainly used (right now)
  514  * to handle IP header alignment requirements on certain architectures.
  515  */
  516 struct mbuf *
  517 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
  518 {
  519         int pktlen, space;
  520         struct mbuf *n;
  521 
  522         pktlen = m->m_pkthdr.len;
  523         space = pktlen + align;
  524         if (space < MINCLSIZE)
  525                 n = m_gethdr(M_NOWAIT, MT_DATA);
  526         else {
  527                 n = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
  528                     space <= MCLBYTES ?     MCLBYTES :
  529 #if MJUMPAGESIZE != MCLBYTES
  530                     space <= MJUMPAGESIZE ? MJUMPAGESIZE :
  531 #endif
  532                     space <= MJUM9BYTES ?   MJUM9BYTES : MJUM16BYTES);
  533         }
  534         if (__predict_true(n != NULL)) {
  535                 m_move_pkthdr(n, m);
  536                 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
  537                 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
  538                 n->m_len = pktlen;
  539         } else {
  540                 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
  541                     mtod(m, const struct ieee80211_frame *), NULL,
  542                     "%s", "no mbuf to realign");
  543                 vap->iv_stats.is_rx_badalign++;
  544         }
  545         m_freem(m);
  546         return n;
  547 }
  548 #endif /* !__NO_STRICT_ALIGNMENT */
  549 
  550 int
  551 ieee80211_add_callback(struct mbuf *m,
  552         void (*func)(struct ieee80211_node *, void *, int), void *arg)
  553 {
  554         struct m_tag *mtag;
  555         struct ieee80211_cb *cb;
  556 
  557         mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
  558                         sizeof(struct ieee80211_cb), M_NOWAIT);
  559         if (mtag == NULL)
  560                 return 0;
  561 
  562         cb = (struct ieee80211_cb *)(mtag+1);
  563         cb->func = func;
  564         cb->arg = arg;
  565         m_tag_prepend(m, mtag);
  566         m->m_flags |= M_TXCB;
  567         return 1;
  568 }
  569 
  570 int
  571 ieee80211_add_xmit_params(struct mbuf *m,
  572     const struct ieee80211_bpf_params *params)
  573 {
  574         struct m_tag *mtag;
  575         struct ieee80211_tx_params *tx;
  576 
  577         mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
  578             sizeof(struct ieee80211_tx_params), M_NOWAIT);
  579         if (mtag == NULL)
  580                 return (0);
  581 
  582         tx = (struct ieee80211_tx_params *)(mtag+1);
  583         memcpy(&tx->params, params, sizeof(struct ieee80211_bpf_params));
  584         m_tag_prepend(m, mtag);
  585         return (1);
  586 }
  587 
  588 int
  589 ieee80211_get_xmit_params(struct mbuf *m,
  590     struct ieee80211_bpf_params *params)
  591 {
  592         struct m_tag *mtag;
  593         struct ieee80211_tx_params *tx;
  594 
  595         mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
  596             NULL);
  597         if (mtag == NULL)
  598                 return (-1);
  599         tx = (struct ieee80211_tx_params *)(mtag + 1);
  600         memcpy(params, &tx->params, sizeof(struct ieee80211_bpf_params));
  601         return (0);
  602 }
  603 
  604 void
  605 ieee80211_process_callback(struct ieee80211_node *ni,
  606         struct mbuf *m, int status)
  607 {
  608         struct m_tag *mtag;
  609 
  610         mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
  611         if (mtag != NULL) {
  612                 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
  613                 cb->func(ni, cb->arg, status);
  614         }
  615 }
  616 
  617 /*
  618  * Add RX parameters to the given mbuf.
  619  *
  620  * Returns 1 if OK, 0 on error.
  621  */
  622 int
  623 ieee80211_add_rx_params(struct mbuf *m, const struct ieee80211_rx_stats *rxs)
  624 {
  625         struct m_tag *mtag;
  626         struct ieee80211_rx_params *rx;
  627 
  628         mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
  629             sizeof(struct ieee80211_rx_stats), M_NOWAIT);
  630         if (mtag == NULL)
  631                 return (0);
  632 
  633         rx = (struct ieee80211_rx_params *)(mtag + 1);
  634         memcpy(&rx->params, rxs, sizeof(*rxs));
  635         m_tag_prepend(m, mtag);
  636         return (1);
  637 }
  638 
  639 int
  640 ieee80211_get_rx_params(struct mbuf *m, struct ieee80211_rx_stats *rxs)
  641 {
  642         struct m_tag *mtag;
  643         struct ieee80211_rx_params *rx;
  644 
  645         mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
  646             NULL);
  647         if (mtag == NULL)
  648                 return (-1);
  649         rx = (struct ieee80211_rx_params *)(mtag + 1);
  650         memcpy(rxs, &rx->params, sizeof(*rxs));
  651         return (0);
  652 }
  653 
  654 const struct ieee80211_rx_stats *
  655 ieee80211_get_rx_params_ptr(struct mbuf *m)
  656 {
  657         struct m_tag *mtag;
  658         struct ieee80211_rx_params *rx;
  659 
  660         mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
  661             NULL);
  662         if (mtag == NULL)
  663                 return (NULL);
  664         rx = (struct ieee80211_rx_params *)(mtag + 1);
  665         return (&rx->params);
  666 }
  667 
  668 /*
  669  * Add TOA parameters to the given mbuf.
  670  */
  671 int
  672 ieee80211_add_toa_params(struct mbuf *m, const struct ieee80211_toa_params *p)
  673 {
  674         struct m_tag *mtag;
  675         struct ieee80211_toa_params *rp;
  676 
  677         mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
  678             sizeof(struct ieee80211_toa_params), M_NOWAIT);
  679         if (mtag == NULL)
  680                 return (0);
  681 
  682         rp = (struct ieee80211_toa_params *)(mtag + 1);
  683         memcpy(rp, p, sizeof(*rp));
  684         m_tag_prepend(m, mtag);
  685         return (1);
  686 }
  687 
  688 int
  689 ieee80211_get_toa_params(struct mbuf *m, struct ieee80211_toa_params *p)
  690 {
  691         struct m_tag *mtag;
  692         struct ieee80211_toa_params *rp;
  693 
  694         mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
  695             NULL);
  696         if (mtag == NULL)
  697                 return (0);
  698         rp = (struct ieee80211_toa_params *)(mtag + 1);
  699         if (p != NULL)
  700                 memcpy(p, rp, sizeof(*p));
  701         return (1);
  702 }
  703 
  704 /*
  705  * Transmit a frame to the parent interface.
  706  */
  707 int
  708 ieee80211_parent_xmitpkt(struct ieee80211com *ic, struct mbuf *m)
  709 {
  710         int error;
  711 
  712         /*
  713          * Assert the IC TX lock is held - this enforces the
  714          * processing -> queuing order is maintained
  715          */
  716         IEEE80211_TX_LOCK_ASSERT(ic);
  717         error = ic->ic_transmit(ic, m);
  718         if (error) {
  719                 struct ieee80211_node *ni;
  720 
  721                 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
  722 
  723                 /* XXX number of fragments */
  724                 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
  725                 ieee80211_free_node(ni);
  726                 ieee80211_free_mbuf(m);
  727         }
  728         return (error);
  729 }
  730 
  731 /*
  732  * Transmit a frame to the VAP interface.
  733  */
  734 int
  735 ieee80211_vap_xmitpkt(struct ieee80211vap *vap, struct mbuf *m)
  736 {
  737         struct ifnet *ifp = vap->iv_ifp;
  738 
  739         /*
  740          * When transmitting via the VAP, we shouldn't hold
  741          * any IC TX lock as the VAP TX path will acquire it.
  742          */
  743         IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic);
  744 
  745         return (ifp->if_transmit(ifp, m));
  746 
  747 }
  748 
  749 #include <sys/libkern.h>
  750 
  751 void
  752 net80211_get_random_bytes(void *p, size_t n)
  753 {
  754         uint8_t *dp = p;
  755 
  756         while (n > 0) {
  757                 uint32_t v = arc4random();
  758                 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
  759                 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
  760                 dp += sizeof(uint32_t), n -= nb;
  761         }
  762 }
  763 
  764 /*
  765  * Helper function for events that pass just a single mac address.
  766  */
  767 static void
  768 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
  769 {
  770         struct ieee80211_join_event iev;
  771 
  772         CURVNET_SET(ifp->if_vnet);
  773         memset(&iev, 0, sizeof(iev));
  774         IEEE80211_ADDR_COPY(iev.iev_addr, mac);
  775         rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
  776         CURVNET_RESTORE();
  777 }
  778 
  779 void
  780 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
  781 {
  782         struct ieee80211vap *vap = ni->ni_vap;
  783         struct ifnet *ifp = vap->iv_ifp;
  784 
  785         CURVNET_SET_QUIET(ifp->if_vnet);
  786         IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
  787             (ni == vap->iv_bss) ? "bss " : "");
  788 
  789         if (ni == vap->iv_bss) {
  790                 notify_macaddr(ifp, newassoc ?
  791                     RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
  792                 if_link_state_change(ifp, LINK_STATE_UP);
  793         } else {
  794                 notify_macaddr(ifp, newassoc ?
  795                     RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
  796         }
  797         CURVNET_RESTORE();
  798 }
  799 
  800 void
  801 ieee80211_notify_node_leave(struct ieee80211_node *ni)
  802 {
  803         struct ieee80211vap *vap = ni->ni_vap;
  804         struct ifnet *ifp = vap->iv_ifp;
  805 
  806         CURVNET_SET_QUIET(ifp->if_vnet);
  807         IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
  808             (ni == vap->iv_bss) ? "bss " : "");
  809 
  810         if (ni == vap->iv_bss) {
  811                 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
  812                 if_link_state_change(ifp, LINK_STATE_DOWN);
  813         } else {
  814                 /* fire off wireless event station leaving */
  815                 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
  816         }
  817         CURVNET_RESTORE();
  818 }
  819 
  820 void
  821 ieee80211_notify_scan_done(struct ieee80211vap *vap)
  822 {
  823         struct ifnet *ifp = vap->iv_ifp;
  824 
  825         IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
  826 
  827         /* dispatch wireless event indicating scan completed */
  828         CURVNET_SET(ifp->if_vnet);
  829         rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
  830         CURVNET_RESTORE();
  831 }
  832 
  833 void
  834 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
  835         const struct ieee80211_frame *wh, const struct ieee80211_key *k,
  836         u_int64_t rsc, int tid)
  837 {
  838         struct ifnet *ifp = vap->iv_ifp;
  839 
  840         IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
  841             "%s replay detected tid %d <rsc %ju (%jx), csc %ju (%jx), keyix %u rxkeyix %u>",
  842             k->wk_cipher->ic_name, tid,
  843             (intmax_t) rsc,
  844             (intmax_t) rsc,
  845             (intmax_t) k->wk_keyrsc[tid],
  846             (intmax_t) k->wk_keyrsc[tid],
  847             k->wk_keyix, k->wk_rxkeyix);
  848 
  849         if (ifp != NULL) {              /* NB: for cipher test modules */
  850                 struct ieee80211_replay_event iev;
  851 
  852                 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
  853                 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
  854                 iev.iev_cipher = k->wk_cipher->ic_cipher;
  855                 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
  856                         iev.iev_keyix = k->wk_rxkeyix;
  857                 else
  858                         iev.iev_keyix = k->wk_keyix;
  859                 iev.iev_keyrsc = k->wk_keyrsc[tid];
  860                 iev.iev_rsc = rsc;
  861                 CURVNET_SET(ifp->if_vnet);
  862                 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
  863                 CURVNET_RESTORE();
  864         }
  865 }
  866 
  867 void
  868 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
  869         const struct ieee80211_frame *wh, u_int keyix)
  870 {
  871         struct ifnet *ifp = vap->iv_ifp;
  872 
  873         IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
  874             "michael MIC verification failed <keyix %u>", keyix);
  875         vap->iv_stats.is_rx_tkipmic++;
  876 
  877         if (ifp != NULL) {              /* NB: for cipher test modules */
  878                 struct ieee80211_michael_event iev;
  879 
  880                 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
  881                 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
  882                 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
  883                 iev.iev_keyix = keyix;
  884                 CURVNET_SET(ifp->if_vnet);
  885                 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
  886                 CURVNET_RESTORE();
  887         }
  888 }
  889 
  890 void
  891 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
  892 {
  893         struct ieee80211vap *vap = ni->ni_vap;
  894         struct ifnet *ifp = vap->iv_ifp;
  895 
  896         notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
  897 }
  898 
  899 void
  900 ieee80211_notify_csa(struct ieee80211com *ic,
  901         const struct ieee80211_channel *c, int mode, int count)
  902 {
  903         struct ieee80211_csa_event iev;
  904         struct ieee80211vap *vap;
  905         struct ifnet *ifp;
  906 
  907         memset(&iev, 0, sizeof(iev));
  908         iev.iev_flags = c->ic_flags;
  909         iev.iev_freq = c->ic_freq;
  910         iev.iev_ieee = c->ic_ieee;
  911         iev.iev_mode = mode;
  912         iev.iev_count = count;
  913         TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
  914                 ifp = vap->iv_ifp;
  915                 CURVNET_SET(ifp->if_vnet);
  916                 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
  917                 CURVNET_RESTORE();
  918         }
  919 }
  920 
  921 void
  922 ieee80211_notify_radar(struct ieee80211com *ic,
  923         const struct ieee80211_channel *c)
  924 {
  925         struct ieee80211_radar_event iev;
  926         struct ieee80211vap *vap;
  927         struct ifnet *ifp;
  928 
  929         memset(&iev, 0, sizeof(iev));
  930         iev.iev_flags = c->ic_flags;
  931         iev.iev_freq = c->ic_freq;
  932         iev.iev_ieee = c->ic_ieee;
  933         TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
  934                 ifp = vap->iv_ifp;
  935                 CURVNET_SET(ifp->if_vnet);
  936                 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
  937                 CURVNET_RESTORE();
  938         }
  939 }
  940 
  941 void
  942 ieee80211_notify_cac(struct ieee80211com *ic,
  943         const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
  944 {
  945         struct ieee80211_cac_event iev;
  946         struct ieee80211vap *vap;
  947         struct ifnet *ifp;
  948 
  949         memset(&iev, 0, sizeof(iev));
  950         iev.iev_flags = c->ic_flags;
  951         iev.iev_freq = c->ic_freq;
  952         iev.iev_ieee = c->ic_ieee;
  953         iev.iev_type = type;
  954         TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
  955                 ifp = vap->iv_ifp;
  956                 CURVNET_SET(ifp->if_vnet);
  957                 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
  958                 CURVNET_RESTORE();
  959         }
  960 }
  961 
  962 void
  963 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
  964 {
  965         struct ieee80211vap *vap = ni->ni_vap;
  966         struct ifnet *ifp = vap->iv_ifp;
  967 
  968         IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
  969 
  970         notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
  971 }
  972 
  973 void
  974 ieee80211_notify_node_auth(struct ieee80211_node *ni)
  975 {
  976         struct ieee80211vap *vap = ni->ni_vap;
  977         struct ifnet *ifp = vap->iv_ifp;
  978 
  979         IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
  980 
  981         notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
  982 }
  983 
  984 void
  985 ieee80211_notify_country(struct ieee80211vap *vap,
  986         const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
  987 {
  988         struct ifnet *ifp = vap->iv_ifp;
  989         struct ieee80211_country_event iev;
  990 
  991         memset(&iev, 0, sizeof(iev));
  992         IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
  993         iev.iev_cc[0] = cc[0];
  994         iev.iev_cc[1] = cc[1];
  995         CURVNET_SET(ifp->if_vnet);
  996         rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
  997         CURVNET_RESTORE();
  998 }
  999 
 1000 void
 1001 ieee80211_notify_radio(struct ieee80211com *ic, int state)
 1002 {
 1003         struct ieee80211_radio_event iev;
 1004         struct ieee80211vap *vap;
 1005         struct ifnet *ifp;
 1006 
 1007         memset(&iev, 0, sizeof(iev));
 1008         iev.iev_state = state;
 1009         TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
 1010                 ifp = vap->iv_ifp;
 1011                 CURVNET_SET(ifp->if_vnet);
 1012                 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
 1013                 CURVNET_RESTORE();
 1014         }
 1015 }
 1016 
 1017 void
 1018 ieee80211_notify_ifnet_change(struct ieee80211vap *vap)
 1019 {
 1020         struct ifnet *ifp = vap->iv_ifp;
 1021 
 1022         IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG, "%s\n",
 1023             "interface state change");
 1024 
 1025         CURVNET_SET(ifp->if_vnet);
 1026         rt_ifmsg(ifp);
 1027         CURVNET_RESTORE();
 1028 }
 1029 
 1030 void
 1031 ieee80211_load_module(const char *modname)
 1032 {
 1033 
 1034 #ifdef notyet
 1035         (void)kern_kldload(curthread, modname, NULL);
 1036 #else
 1037         printf("%s: load the %s module by hand for now.\n", __func__, modname);
 1038 #endif
 1039 }
 1040 
 1041 static eventhandler_tag wlan_bpfevent;
 1042 static eventhandler_tag wlan_ifllevent;
 1043 
 1044 static void
 1045 bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
 1046 {
 1047         /* NB: identify vap's by if_init */
 1048         if (dlt == DLT_IEEE802_11_RADIO &&
 1049             ifp->if_init == ieee80211_init) {
 1050                 struct ieee80211vap *vap = ifp->if_softc;
 1051                 /*
 1052                  * Track bpf radiotap listener state.  We mark the vap
 1053                  * to indicate if any listener is present and the com
 1054                  * to indicate if any listener exists on any associated
 1055                  * vap.  This flag is used by drivers to prepare radiotap
 1056                  * state only when needed.
 1057                  */
 1058                 if (attach) {
 1059                         ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
 1060                         if (vap->iv_opmode == IEEE80211_M_MONITOR)
 1061                                 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
 1062                 } else if (!bpf_peers_present(vap->iv_rawbpf)) {
 1063                         ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
 1064                         if (vap->iv_opmode == IEEE80211_M_MONITOR)
 1065                                 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
 1066                 }
 1067         }
 1068 }
 1069 
 1070 /*
 1071  * Change MAC address on the vap (if was not started).
 1072  */
 1073 static void
 1074 wlan_iflladdr(void *arg __unused, struct ifnet *ifp)
 1075 {
 1076         /* NB: identify vap's by if_init */
 1077         if (ifp->if_init == ieee80211_init &&
 1078             (ifp->if_flags & IFF_UP) == 0) {
 1079                 struct ieee80211vap *vap = ifp->if_softc;
 1080 
 1081                 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
 1082         }
 1083 }
 1084 
 1085 /*
 1086  * Fetch the VAP name.
 1087  *
 1088  * This returns a const char pointer suitable for debugging,
 1089  * but don't expect it to stick around for much longer.
 1090  */
 1091 const char *
 1092 ieee80211_get_vap_ifname(struct ieee80211vap *vap)
 1093 {
 1094         if (vap->iv_ifp == NULL)
 1095                 return "(none)";
 1096         return vap->iv_ifp->if_xname;
 1097 }
 1098 
 1099 #ifdef DEBUGNET
 1100 static void
 1101 ieee80211_debugnet_init(struct ifnet *ifp, int *nrxr, int *ncl, int *clsize)
 1102 {
 1103         struct ieee80211vap *vap;
 1104         struct ieee80211com *ic;
 1105 
 1106         vap = if_getsoftc(ifp);
 1107         ic = vap->iv_ic;
 1108 
 1109         IEEE80211_LOCK(ic);
 1110         ic->ic_debugnet_meth->dn8_init(ic, nrxr, ncl, clsize);
 1111         IEEE80211_UNLOCK(ic);
 1112 }
 1113 
 1114 static void
 1115 ieee80211_debugnet_event(struct ifnet *ifp, enum debugnet_ev ev)
 1116 {
 1117         struct ieee80211vap *vap;
 1118         struct ieee80211com *ic;
 1119 
 1120         vap = if_getsoftc(ifp);
 1121         ic = vap->iv_ic;
 1122 
 1123         IEEE80211_LOCK(ic);
 1124         ic->ic_debugnet_meth->dn8_event(ic, ev);
 1125         IEEE80211_UNLOCK(ic);
 1126 }
 1127 
 1128 static int
 1129 ieee80211_debugnet_transmit(struct ifnet *ifp, struct mbuf *m)
 1130 {
 1131         return (ieee80211_vap_transmit(ifp, m));
 1132 }
 1133 
 1134 static int
 1135 ieee80211_debugnet_poll(struct ifnet *ifp, int count)
 1136 {
 1137         struct ieee80211vap *vap;
 1138         struct ieee80211com *ic;
 1139 
 1140         vap = if_getsoftc(ifp);
 1141         ic = vap->iv_ic;
 1142 
 1143         return (ic->ic_debugnet_meth->dn8_poll(ic, count));
 1144 }
 1145 #endif
 1146 
 1147 /*
 1148  * Module glue.
 1149  *
 1150  * NB: the module name is "wlan" for compatibility with NetBSD.
 1151  */
 1152 static int
 1153 wlan_modevent(module_t mod, int type, void *unused)
 1154 {
 1155         switch (type) {
 1156         case MOD_LOAD:
 1157                 if (bootverbose)
 1158                         printf("wlan: <802.11 Link Layer>\n");
 1159                 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
 1160                     bpf_track, 0, EVENTHANDLER_PRI_ANY);
 1161                 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
 1162                     wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
 1163                 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create,
 1164                     wlan_clone_destroy, 0);
 1165                 return 0;
 1166         case MOD_UNLOAD:
 1167                 if_clone_detach(wlan_cloner);
 1168                 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
 1169                 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
 1170                 return 0;
 1171         }
 1172         return EINVAL;
 1173 }
 1174 
 1175 static moduledata_t wlan_mod = {
 1176         wlanname,
 1177         wlan_modevent,
 1178         0
 1179 };
 1180 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
 1181 MODULE_VERSION(wlan, 1);
 1182 MODULE_DEPEND(wlan, ether, 1, 1, 1);
 1183 #ifdef  IEEE80211_ALQ
 1184 MODULE_DEPEND(wlan, alq, 1, 1, 1);
 1185 #endif  /* IEEE80211_ALQ */

Cache object: 1c49ed090c4300a12a68e3cfe57c73c4


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.