fe267a5590
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2007-2008 Sam Leffler, Errno Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifdef __FreeBSD__
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__FBSDID("$FreeBSD$");
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#endif
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/*
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* IEEE 802.11 Monitor mode support.
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*/
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#include "opt_inet.h"
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/endian.h>
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#include <sys/errno.h>
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#include <sys/proc.h>
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#include <sys/sysctl.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_media.h>
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#include <net/if_llc.h>
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#include <net/ethernet.h>
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#include <net/bpf.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_monitor.h>
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static void monitor_vattach(struct ieee80211vap *);
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static int monitor_newstate(struct ieee80211vap *, enum ieee80211_state, int);
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static int monitor_input(struct ieee80211_node *ni, struct mbuf *m,
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const struct ieee80211_rx_stats *rxs, int rssi, int nf);
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void
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ieee80211_monitor_attach(struct ieee80211com *ic)
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{
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ic->ic_vattach[IEEE80211_M_MONITOR] = monitor_vattach;
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}
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void
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ieee80211_monitor_detach(struct ieee80211com *ic)
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{
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}
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static void
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monitor_vdetach(struct ieee80211vap *vap)
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{
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}
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static void
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monitor_vattach(struct ieee80211vap *vap)
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{
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vap->iv_newstate = monitor_newstate;
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vap->iv_input = monitor_input;
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vap->iv_opdetach = monitor_vdetach;
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}
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/*
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* IEEE80211_M_MONITOR vap state machine handler.
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*/
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static int
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monitor_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
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{
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struct ieee80211com *ic = vap->iv_ic;
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enum ieee80211_state ostate;
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IEEE80211_LOCK_ASSERT(ic);
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ostate = vap->iv_state;
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IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n",
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__func__, ieee80211_state_name[ostate],
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ieee80211_state_name[nstate], arg);
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vap->iv_state = nstate; /* state transition */
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if (nstate == IEEE80211_S_RUN) {
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switch (ostate) {
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case IEEE80211_S_INIT:
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ieee80211_create_ibss(vap, ic->ic_curchan);
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break;
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default:
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break;
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}
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/*
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* NB: this shouldn't be here but many people use
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* monitor mode for raw packets; once we switch
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* them over to adhoc demo mode remove this.
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*/
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ieee80211_node_authorize(vap->iv_bss);
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}
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return 0;
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}
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/*
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* Process a received frame in monitor mode.
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*/
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static int
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monitor_input(struct ieee80211_node *ni, struct mbuf *m,
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const struct ieee80211_rx_stats *rxs, int rssi, int nf)
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{
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struct ieee80211vap *vap = ni->ni_vap;
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struct ifnet *ifp = vap->iv_ifp;
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if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
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if (ieee80211_radiotap_active_vap(vap))
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ieee80211_radiotap_rx(vap, m);
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m_freem(m);
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return -1;
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}
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