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#!/bin/bash
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# Network Interface Configuration System
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# Copyright (c) 1996-2009 Red Hat, Inc. all rights reserved.
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#
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# Based on PCMCIA wireless script by (David Hinds/Jean Tourrilhes)
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License, version 2,
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# as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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#
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# Configure wireless network device options. See iwconfig(8) for more info.
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# Valid variables:
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# MODE: Ad-Hoc, Managed, etc.
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# ESSID: Name of the wireless network
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# NWID: Name of this machine on the network. Hostname is default
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# FREQ: Frequency to operate on. See CHANNEL
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# CHANNEL: Numbered frequency to operate on. See FREQ
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# SENS: Sensitivity threshold for packet rejection.
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# RATE: Transfer rate. Usually one of Auto, 11, 5, 2, or 1.
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# KEY: Encryption key for WEP.
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# RTS: Explicit RTS handshake. Usually not specified (auto)
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# FRAG: Fragmentation threshold to split packets. Usually not specified.
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# SPYIPS: List of IP addresses to "spy" on for link performance stats.
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# IWCONFIG: Extra parameters to pass directly to IWCONFIG
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# SECURITYMODE: Security mode, e.g: 'open' or 'restricted'
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# IWPRIV: Extra parameters to pass directly to IWPRIV
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# Only meant to be called from ifup.
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# Mode need to be first : some settings apply only in a specific mode !
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if [ -n "$MODE" ] ; then
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iwconfig $DEVICE mode $MODE
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fi
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# Set link up (some cards require this.)
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/sbin/ip link set dev ${DEVICE} up
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# This is a bit hackish, but should do the job right...
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if [ -n "$ESSID" -o -n "$MODE" ] ; then
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NICKNAME=$(/bin/hostname)
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iwconfig $DEVICE nick "$NICKNAME" >/dev/null 2>&1
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fi
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# Regular stuff...
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if [ -n "$NWID" ] ; then
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iwconfig $DEVICE nwid $NWID
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fi
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if [ -n "$FREQ" -a "$MODE" != "Managed" ] ; then
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iwconfig $DEVICE freq $FREQ
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elif [ -n "$CHANNEL" -a "$MODE" != "Managed" ] ; then
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iwconfig $DEVICE channel $CHANNEL
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fi
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if [ -n "$SENS" ] ; then
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iwconfig $DEVICE sens $SENS
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fi
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if [ -n "$RATE" ] ; then
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iwconfig $DEVICE rate "$RATE"
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fi
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if [ -n "$KEY" -o -n "$KEY1" -o -n "$KEY2" -o -n "$KEY3" -o -n "$KEY4" ] ; then
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[ -n "$KEY1" ] && iwconfig $DEVICE key "[1]" $KEY1
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[ -n "$KEY2" ] && iwconfig $DEVICE key "[2]" $KEY2
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[ -n "$KEY3" ] && iwconfig $DEVICE key "[3]" $KEY3
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[ -n "$KEY4" ] && iwconfig $DEVICE key "[4]" $KEY4
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[ -n "$DEFAULTKEY" ] && iwconfig $DEVICE key "[${DEFAULTKEY}]"
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[ -n "$KEY" ] && iwconfig $DEVICE key $KEY
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else
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iwconfig $DEVICE key off
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fi
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if [ -n "$SECURITYMODE" ]; then
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iwconfig $DEVICE enc $SECURITYMODE
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fi
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if [ -n "$RTS" ] ; then
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iwconfig $DEVICE rts $RTS
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fi
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if [ -n "$FRAG" ] ; then
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iwconfig $DEVICE frag $FRAG
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fi
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# More specific parameters passed directly to IWCONFIG
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if [ -n "$IWCONFIG" ] ; then
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iwconfig $DEVICE $IWCONFIG
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fi
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if [ -n "$SPYIPS" ] ; then
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for IP in $SPYIPS; do
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iwspy $DEVICE + $IP
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done
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fi
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if [ -n "$IWPRIV" ] ; then
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iwpriv $DEVICE $IWPRIV
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fi
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# ESSID need to be last : most device re-perform the scanning/discovery
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# when this is set, and things like encryption keys are better be
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# defined if we want to discover the right set of APs/nodes.
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if [ -n "$ESSID" ] ; then
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iwconfig $DEVICE essid "$ESSID"
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else
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# use any essid
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iwconfig $DEVICE essid any >/dev/null 2>&1
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fi
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