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#!/bin/bash
# Network Interface Configuration System
# Copyright (c) 1996-2001 Red Hat, Inc. all rights reserved.
#
# Based on PCMCIA wireless script by (David Hinds/Jean Tourrilhes)
#
# This software may be freely redistributed under the terms of the GNU
# public license.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# Configure wireless network device options. See iwconfig(8) for more info.
# Valid variables:
# MODE: Ad-Hoc, Managed, etc.
# ESSID: Name of the wireless network
# NWID: Name of this machine on the network. Hostname is default
# FREQ: Frequency to operate on. See CHANNEL
# CHANNEL: Numbered frequency to operate on. See FREQ
# SENS: Sensitivity threshold for packet rejection.
# RATE: Transfer rate. Usually one of Auto, 11, 5, 2, or 1.
# KEY: Encryption key for WEP.
# RTS: Explicit RTS handshake. Usually not specified (auto)
# FRAG: Fragmentation threshold to split packets. Usually not specified.
# SPYIPS: List of IP addresses to "spy" on for link performance stats.
# IWCONFIG: Extra parameters to pass directly to IWCONFIG
# IWPRIV: Extra parameters to pass directly to IWPRIV
# Only meant to be called from ifup.
# Mode need to be first : some settings apply only in a specific mode !
if [ -n "$MODE" ] ; then
iwconfig $DEVICE mode $MODE
fi
# This is a bit hackish, but should do the job right...
if [ -n "$ESSID" ] || [ -n "$MODE" ] ; then
NICKNAME=`/bin/hostname`
iwconfig $DEVICE nick $NICKNAME >/dev/null 2>&1
fi
# Regular stuff...
if [ "-n $NWID" ] ; then
iwconfig $DEVICE nwid $NWID
fi
if [ -n "$FREQ" ] ; then
iwconfig $DEVICE freq $FREQ
elif [ -n "$CHANNEL" ] ; then
iwconfig $DEVICE channel $CHANNEL
fi
if [ -n "$SENS" ] ; then
iwconfig $DEVICE sens $SENS
fi
if [ -n "$RATE" ] ; then
iwconfig $DEVICE rate $RATE
fi
if [ -n "$KEY" ] ; then
iwconfig $DEVICE key $KEY
fi
if [ -n "$RTS" ] ; then
iwconfig $DEVICE rts $RTS
fi
if [ -n "$FRAG" ] ; then
iwconfig $DEVICE frag $FRAG
fi
# More specific parameters passed directly to IWCONFIG
if [ -n "$IWCONFIG" ] ; then
iwconfig $DEVICE $IWCONFIG
fi
if [ -n "$SPYIPS" ] ; then
for IP in $SPYIPS; do
iwspy $DEVICE $IP
done
fi
if [ -n "$IWPRIV" ] ; then
iwpriv $DEVICE $IWPRIV
fi
# ESSID need to be last : most device re-perform the scanning/discovery
# when this is set, and things like encryption keys are better be
# defined if we want to discover the right set of APs/nodes.
if [ -n "$ESSID" ] ; then
iwconfig $DEVICE essid "$ESSID"
fi
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