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@microlinux

microlinux/shif.sh

Created Aug 25, 2015
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A script to add commands to EdgeOS that show ethernet/vif traffic
#!/bin/bash
# a script to add commands to EdgeOS that show ethernet/vif traffic
#
# default measurement period is 5 seconds
# probably extendable to any interface in /proc/net/dev
# see 'shif.sh -h' for standalone use
#
# install: sudo chmod 755 shif.sh
# sudo ./shif.sh install
#
# requires: bc (instructions during install)
#
# adds:
# show interfaces ethernet <name> traffic [seconds]
# show interfaces ethernet <name> vif <number> traffic [seconds]
#
# admin@router:~$ show interfaces ethernet eth6 traffic
# mbps pps bpp errors drops
# in .66 875 95 0 0
# out 15.04 1314 1430 0 0
### FUNCTIONS ###
function install_shif()
{
TPL_DIR='/opt/vyatta/share/vyatta-op/templates/show/interfaces'
if [[ "$EUID" -ne 0 ]]
then
echo 'installation requires root privileges'
exit 1
fi
if [ -z "$(which bc)" ]
then
echo 'bc not installed'
echo 'enable debian repos per https://goo.gl/YlKZ62'
echo 'run "sudo apt-get update && sudo apt-get install bc"'
echo 'shif.sh requires bc to function properly'
echo
fi
cp -pf ./shif.sh /config/scripts || exit 2
chmod 755 /config/scripts/shif.sh || exit 3
mkdir -p "$TPL_DIR/ethernet/node.tag/traffic/node.tag" || exit 4
mkdir -p "$TPL_DIR/ethernet/node.tag/vif/node.tag/traffic/node.tag" || exit 5
# ethernet traffic node
cat > "$TPL_DIR/ethernet/node.tag/traffic/node.def" << EOF
help: show interface traffic
run: /config/scripts/shif.sh -s5 "\$4"
EOF
# ethernet traffic measurement period node
cat > "$TPL_DIR/ethernet/node.tag/traffic/node.tag/node.def" << EOF
help: seconds to measure
run: /config/scripts/shif.sh -s"\$6" "\$4"
EOF
# ethernet vif traffic node
cat > "$TPL_DIR/ethernet/node.tag/vif/node.tag/traffic/node.def" << EOF
help: show interface traffic
run: /config/scripts/shif.sh -s5 "\$4.\$6"
EOF
# ethernet vif traffic measurement period node
cat > "$TPL_DIR/ethernet/node.tag/vif/node.tag/traffic/node.tag/node.def" << EOF
help: seconds to measure
run: /config/scripts/shif.sh -s"\$8" "\$4.\$6"
EOF
echo 'installation complete'
echo 'show interfaces ethernet <name> traffic [seconds]'
echo 'show interfaces ethernet <name> vif <number> traffic [seconds]'
}
function get_stats()
{
stats=($(grep "^ *$1:" /proc/net/dev))
if [ -z "$stats" ]; then exit 1; fi
echo "${stats[1]} ${stats[2]} ${stats[3]} ${stats[4]} ${stats[9]} ${stats[10]} ${stats[11]} ${stats[12]}"
}
function calc_mbps()
{
mbps=$(bc 2> /dev/null <<< "scale=2; ($2 - $1) / 125000 / $SECS")
if [ -z "$mbps" ]
then
echo 0
else
echo "$mbps"
fi
}
function calc_pps()
{
pps=$(bc 2> /dev/null <<< "scale=0; ($2 - $1) / $SECS")
if [ -z "$pps" ]
then
echo 0
else
echo "$pps"
fi
}
function calc_bpp()
{
bpp=$(bc 2> /dev/null <<< "scale=0; ($2 - $1) / ($4 - $3)")
if [ -z "$bpp" ]
then
echo 0
else
echo "$bpp"
fi
}
### OPTION DEFAULTS ###
CSV=0
SECS=5
### MAIN PROGRAM ###
while getopts 'hcs:' option
do
case "$option" in
h)
echo 'display interface mbps/pps/bpp and error/drop counts'
echo
echo 'usage: shif.sh [OPTIONS] INTERFACE'
echo
echo 'options:'
echo ' -s INT seconds to measure (5)'
echo ' -c display output in csv format'
echo ' mbps_in,pps_in,bpp_in,errs_in,drops_in,mbps_out,...'
exit
;;
s)
SECS=$(printf "%.0f" "$OPTARG")
if [ "$SECS" -lt 1 ]; then echo 'seconds must be >= 1'; exit 2; fi
;;
c)
CSV=1
;;
esac
done
shift $((OPTIND - 1))
if [ "$1" == 'install' ]
then
install_shif
exit
fi
stats_1=($(get_stats "$1"))
if [ $? -gt 0 ]; then echo 'interface not found'; exit 1; fi
sleep "$SECS"
stats_2=($(get_stats "$1"))
if [ $? -gt 0 ]; then echo 'interface not found'; exit 1; fi
mbps_in="$(calc_mbps ${stats_1[0]} ${stats_2[0]})"
pps_in="$(calc_pps ${stats_1[1]} ${stats_2[1]})"
bpp_in="$(calc_bpp ${stats_1[0]} ${stats_2[0]} ${stats_1[1]} ${stats_2[1]})"
errs_in="$((stats_2[2] - stats_1[2]))"
drops_in="$((stats_2[3] - stats_1[3]))"
mbps_out="$(calc_mbps ${stats_1[4]} ${stats_2[4]})"
pps_out="$(calc_pps ${stats_1[5]} ${stats_2[5]})"
bpp_out="$(calc_bpp ${stats_1[4]} ${stats_2[4]} ${stats_1[5]} ${stats_2[5]})"
errs_out="$((stats_2[6] - stats_1[6]))"
drops_out="$((stats_2[7] - stats_1[7]))"
if [ "$CSV" -eq 0 ]
then
echo ' mbps pps bpp errors drops'
printf "in %-8s %-9s %-5s %-7s %s\n" "$mbps_in" "$pps_in" "$bpp_in" "$errs_in" "$drops_in"
printf "out %-8s %-9s %-5s %-7s %s\n" "$mbps_out" "$pps_out" "$bpp_out" "$errs_out" "$drops_out"
else
echo "$mbps_in,$pps_in,$bpp_in,$errs_in,$drops_in,$mbps_out,$pps_out,$bpp_out,$errs_out,$drops_out"
fi
exit
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