Current Path : /sys/net80211/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/net80211/ieee80211_monitor.c |
/*- * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> #ifdef __FreeBSD__ __FBSDID("$FreeBSD: release/9.1.0/sys/net80211/ieee80211_monitor.c 193287 2009-06-02 00:04:10Z sam $"); #endif /* * IEEE 802.11 Monitor mode support. */ #include "opt_inet.h" #include "opt_wlan.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/mbuf.h> #include <sys/malloc.h> #include <sys/kernel.h> #include <sys/socket.h> #include <sys/sockio.h> #include <sys/endian.h> #include <sys/errno.h> #include <sys/proc.h> #include <sys/sysctl.h> #include <net/if.h> #include <net/if_media.h> #include <net/if_llc.h> #include <net/ethernet.h> #include <net/bpf.h> #include <net80211/ieee80211_var.h> #include <net80211/ieee80211_monitor.h> static void monitor_vattach(struct ieee80211vap *); static int monitor_newstate(struct ieee80211vap *, enum ieee80211_state, int); static int monitor_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf); void ieee80211_monitor_attach(struct ieee80211com *ic) { ic->ic_vattach[IEEE80211_M_MONITOR] = monitor_vattach; } void ieee80211_monitor_detach(struct ieee80211com *ic) { } static void monitor_vdetach(struct ieee80211vap *vap) { } static void monitor_vattach(struct ieee80211vap *vap) { vap->iv_newstate = monitor_newstate; vap->iv_input = monitor_input; vap->iv_opdetach = monitor_vdetach; } /* * IEEE80211_M_MONITOR vap state machine handler. */ static int monitor_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct ieee80211com *ic = vap->iv_ic; enum ieee80211_state ostate; IEEE80211_LOCK_ASSERT(ic); ostate = vap->iv_state; IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", __func__, ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); vap->iv_state = nstate; /* state transition */ if (nstate == IEEE80211_S_RUN) { switch (ostate) { case IEEE80211_S_INIT: ieee80211_create_ibss(vap, ic->ic_curchan); break; default: break; } /* * NB: this shouldn't be here but many people use * monitor mode for raw packets; once we switch * them over to adhoc demo mode remove this. */ ieee80211_node_authorize(vap->iv_bss); } return 0; } /* * Process a received frame in monitor mode. */ static int monitor_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) { struct ieee80211vap *vap = ni->ni_vap; struct ifnet *ifp = vap->iv_ifp; ifp->if_ipackets++; if (ieee80211_radiotap_active_vap(vap)) ieee80211_radiotap_rx(vap, m); m_freem(m); return -1; }