#!/bin/bash # Network Interface Configuration System # Copyright (c) 1996-2002 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" -o -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" -a "$MODE" != "Managed" ] ; then iwconfig $DEVICE freq $FREQ elif [ -n "$CHANNEL" -a "$MODE" != "Managed" ] ; 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 else iwconfig $DEVICE key off fi if [ -n "$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" else # use any essid iwconfig $DEVICE essid any fi