1#! /bin/sh 2# 3# Set the IFS parameters for an interface configured for 4# point-to-point use at a specific distance. Based on a 5# program by Gunter Burchardt. 6# 7# 8DEV=ath0 9d=0 10 11usage() 12{ 13 echo "Usage: $0 [-i athX] [-d meters]" 14 exit 2 15} 16 17args=`getopt d:i: $*` 18test $? -ne 0 && usage 19 20set -- $args 21for i; do 22 case "$i" in 23 -i) DEV="$2"; shift; shift;; 24 -d) d="$2"; shift; shift;; 25 --) shift; break; 26 esac 27done 28 29test $d -eq 0 && usage 30 31slottime=`expr 9 + \( $d / 300 \)` 32if expr \( $d % 300 \) != 0 >/dev/null 2>&1; then 33 slottime=`expr $slottime + 1` 34fi 35timeout=`expr $slottime \* 2 + 3` 36 37printf "Setup IFS parameters on interface ${DEV} for %i meter p-2-p link\n" $d 38ATHN=`echo $DEV | sed 's/ath//'` 39sysctl dev.ath.$ATHN.slottime=$slottime 40sysctl dev.ath.$ATHN.acktimeout=$timeout 41sysctl dev.ath.$ATHN.ctstimeout=$timeout 42