mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-30 15:38:06 +01:00
139 lines
3.7 KiB
C
139 lines
3.7 KiB
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("$FreeBSD$");
|
|
#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;
|
|
}
|