b216fd3642
If interface is getting down by netifd (unplug ethernet cable) mwan3track will not recognize this change. It will also generate an additional down event when he notice does his tracking interface is offline. Mwan3track will now be informed by a signal (trap) USR1 during down event that the interface is already down. An additional down event will not be generated. Signed-off-by: Florian Eckert <fe@dev.tdt.de>
128 lines
3 KiB
Bash
Executable file
128 lines
3 KiB
Bash
Executable file
#!/bin/sh
|
|
|
|
. /lib/functions.sh
|
|
|
|
LOG="/usr/bin/logger -t $(basename "$0")[$$] -p"
|
|
INTERFACE=""
|
|
DEVICE=""
|
|
|
|
IFDOWN_EVENT=0
|
|
|
|
clean_up() {
|
|
$LOG notice "Stopping mwan3track for interface \"${INTERFACE}\""
|
|
rm "/var/run/mwan3track-${INTERFACE}.pid" &> /dev/null
|
|
rm -rf "/var/run/mwan3track/${INTERFACE}" &> /dev/null
|
|
if [ -z "$(ls -A "/var/run/mwan3track")" ]; then
|
|
rm -rf "/var/run/mwan3track"
|
|
fi
|
|
exit 0
|
|
}
|
|
|
|
if_down() {
|
|
$LOG info "Detect ifdown event on interface ${INTERFACE} (${DEVICE})"
|
|
IFDOWN_EVENT=1
|
|
}
|
|
|
|
main() {
|
|
local reliability count timeout interval failure_interval
|
|
local recovery_interval down up size
|
|
|
|
[ -z "$3" ] && echo "Error: should not be started manually" && exit 0
|
|
|
|
INTERFACE=$1
|
|
DEVICE=$2
|
|
echo "$$" > /var/run/mwan3track-$1.pid
|
|
mkdir -p /var/run/mwan3track/$1
|
|
trap clean_up SIGINT SIGTERM
|
|
trap if_down SIGUSR1
|
|
|
|
config_load mwan3
|
|
config_get reliability $1 reliability 1
|
|
config_get count $1 count 1
|
|
config_get timeout $1 timeout 4
|
|
config_get interval $1 interval 10
|
|
config_get down $1 down 5
|
|
config_get up $1 up 5
|
|
config_get size $1 size 56
|
|
config_get failure_interval $1 failure_interval $interval
|
|
config_get recovery_interval $1 recovery_interval $interval
|
|
|
|
local score=$(($down+$up))
|
|
local track_ips=$(echo $* | cut -d ' ' -f 3-99)
|
|
local host_up_count=0
|
|
local lost=0
|
|
local sleep_time=0
|
|
local turn=0
|
|
|
|
echo "offline" > /var/run/mwan3track/$1/STATUS
|
|
while true; do
|
|
|
|
sleep_time=$interval
|
|
|
|
for track_ip in $track_ips; do
|
|
ping -I $2 -c $count -W $timeout -s $size -q $track_ip &> /dev/null
|
|
if [ $? -eq 0 ]; then
|
|
let host_up_count++
|
|
echo "up" > /var/run/mwan3track/$1/TRACK_${track_ip}
|
|
else
|
|
let lost++
|
|
echo "down" > /var/run/mwan3track/$1/TRACK_${track_ip}
|
|
fi
|
|
done
|
|
|
|
if [ $host_up_count -lt $reliability ]; then
|
|
let score--
|
|
|
|
if [ $score -lt $up ]; then
|
|
score=0
|
|
else
|
|
sleep_time=$failure_interval
|
|
fi
|
|
|
|
if [ $score -eq $up ]; then
|
|
echo "offline" > /var/run/mwan3track/$1/STATUS
|
|
$LOG notice "Interface $1 ($2) is offline"
|
|
env -i ACTION=ifdown INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
|
|
score=0
|
|
fi
|
|
else
|
|
if [ $score -lt $(($down+$up)) ] && [ $lost -gt 0 ]; then
|
|
$LOG info "Lost $(($lost*$count)) ping(s) on interface $1 ($2)"
|
|
fi
|
|
|
|
let score++
|
|
lost=0
|
|
|
|
if [ $score -gt $up ]; then
|
|
echo "online" > /var/run/mwan3track/$1/STATUS
|
|
score=$(($down+$up))
|
|
elif [ $score -le $up ]; then
|
|
sleep_time=$recovery_interval
|
|
fi
|
|
|
|
if [ $score -eq $up ]; then
|
|
$LOG notice "Interface $1 ($2) is online"
|
|
env -i ACTION=ifup INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
|
|
rm /var/run/mwan3track-$1.pid
|
|
rm -rf "/var/run/mwan3track/${1}" &> /dev/null
|
|
exit 0
|
|
fi
|
|
fi
|
|
|
|
let turn++
|
|
echo "${lost}" > /var/run/mwan3track/$1/LOST
|
|
echo "${score}" > /var/run/mwan3track/$1/SCORE
|
|
echo "${turn}" > /var/run/mwan3track/$1/TURN
|
|
|
|
host_up_count=0
|
|
sleep $sleep_time
|
|
|
|
if [ "${IFDOWN_EVENT}" -eq 1 ]; then
|
|
score=0
|
|
echo "offline" > /var/run/mwan3track/$1/STATUS
|
|
IFDOWN_EVENT=0
|
|
fi
|
|
done
|
|
}
|
|
|
|
main "$@"
|