#! /bin/sh # # Set the IFS parameters for an interface configured for # point-to-point use at a specific distance. Based on a # program by Gunter Burchardt. # # $FreeBSD: stable/11/tools/tools/ath/athctrl.sh 149629 2005-08-30 16:03:15Z sam $ # DEV=ath0 d=0 usage() { echo "Usage: $0 [-i athX] [-d meters]" exit 2 } args=`getopt d:i: $*` test $? -ne 0 && usage set -- $args for i; do case "$i" in -i) DEV="$2"; shift; shift;; -d) d="$2"; shift; shift;; --) shift; break; esac done test $d -eq 0 && usage slottime=`expr 9 + \( $d / 300 \)` if expr \( $d % 300 \) != 0 >/dev/null 2>&1; then slottime=`expr $slottime + 1` fi timeout=`expr $slottime \* 2 + 3` printf "Setup IFS parameters on interface ${DEV} for %i meter p-2-p link\n" $d ATHN=`echo $DEV | sed 's/ath//'` sysctl dev.ath.$ATHN.slottime=$slottime sysctl dev.ath.$ATHN.acktimeout=$timeout sysctl dev.ath.$ATHN.ctstimeout=$timeout