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Merge pull request #175 from Adze1502/master 

Add mwan3 to packages feed
lilik-openwrt-22.03
champtar 10 years ago
parent
30dad318aa 7afdbd28cf
commit
f310940314
6 changed files with 748 additions and 0 deletions
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  1. +48
    -0
      net/mwan3/Makefile
  2. +79
    -0
      net/mwan3/files/etc/config/mwan3
  3. +328
    -0
      net/mwan3/files/etc/hotplug.d/iface/15-mwan3
  4. +20
    -0
      net/mwan3/files/etc/init.d/mwan3
  5. +208
    -0
      net/mwan3/files/usr/sbin/mwan3
  6. +65
    -0
      net/mwan3/files/usr/sbin/mwan3track

+ 48
- 0
net/mwan3/Makefile View File

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#
# Copyright (C) 2006-2014 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=mwan3
PKG_VERSION:=1.4
PKG_RELEASE:=22
PKG_MAINTAINER:=Jeroen Louwes <jeroen.louwes@gmail.com>
PKG_LICENSE:=GPLv2
include $(INCLUDE_DIR)/package.mk
define Package/mwan3
SECTION:=net
CATEGORY:=Network
SUBMENU:=Routing and Redirection
DEPENDS:=+ip +iptables +iptables-mod-conntrack-extra +iptables-mod-ipopt
TITLE:=Multiwan hotplug script with connection tracking support
MAINTAINER:=Jeroen Louwes <jeroen.louwes@gmail.com>
PKGARCH:=all
endef
define Package/mwan3/description
Hotplug script which makes configuration of multiple WAN interfaces simple and manageable. With loadbalancing/failover support for up to 250 wan interfaces, connection tracking and an easy to manage traffic ruleset.
endef
define Package/mwan3/conffiles
/etc/config/mwan3
endef
define Build/Compile
endef
define Package/mwan3/install
$(CP) ./files/* $(1)
endef
define Package/mwan3/postinst
[ -n "$${IPKG_INSTROOT}" ] || /etc/init.d/mwan3 enable
exit 0
endef
$(eval $(call BuildPackage,mwan3))

+ 79
- 0
net/mwan3/files/etc/config/mwan3 View File

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config interface 'wan'
option enabled '1'
list track_ip '8.8.4.4'
list track_ip '8.8.8.8'
list track_ip '208.67.222.222'
list track_ip '208.67.220.220'
option reliability '2'
option count '1'
option timeout '2'
option interval '5'
option down '3'
option up '8'
config interface 'wan2'
option enabled '0'
list track_ip '8.8.8.8'
list track_ip '208.67.220.220'
option reliability '1'
option count '1'
option timeout '2'
option interval '5'
option down '3'
option up '8'
config member 'wan_m1_w3'
option interface 'wan'
option metric '1'
option weight '3'
config member 'wan_m2_w3'
option interface 'wan'
option metric '2'
option weight '3'
config member 'wan2_m1_w2'
option interface 'wan2'
option metric '1'
option weight '2'
config member 'wan2_m2_w2'
option interface 'wan2'
option metric '2'
option weight '2'
config policy 'wan_only'
list use_member 'wan_m1_w3'
config policy 'wan2_only'
list use_member 'wan2_m1_w2'
config policy 'balanced'
list use_member 'wan_m1_w3'
list use_member 'wan2_m1_w2'
config policy 'wan_wan2'
list use_member 'wan_m1_w3'
list use_member 'wan2_m2_w2'
config policy 'wan2_wan'
list use_member 'wan_m2_w3'
list use_member 'wan2_m1_w2'
config rule 'sticky_even'
option src_ip '0.0.0.0/0.0.0.1'
option dest_port '443'
option proto 'tcp'
option use_policy 'wan_wan2'
config rule 'sticky_odd'
option src_ip '0.0.0.1/0.0.0.1'
option dest_port '443'
option proto 'tcp'
option use_policy 'wan2_wan'
config rule 'default_rule'
option dest_ip '0.0.0.0/0'
option use_policy 'balanced'

+ 328
- 0
net/mwan3/files/etc/hotplug.d/iface/15-mwan3 View File

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#!/bin/sh
mwan3_get_iface_id()
{
let iface_count++
[ "$1" == "$INTERFACE" ] && iface_id=$iface_count
}
mwan3_get_route_args()
{
route_args=$(ip -4 route list dev $DEVICE default | head -1 | sed '/.*via \([^ ]*\) .*$/!d;s//\1/;q' | egrep '[0-9]{1,3}(\.[0-9]{1,3}){3}')
[ -n "$route_args" ] && route_args="via $route_args"
route_args="nexthop $route_args dev $DEVICE"
}
mwan3_set_general_iptables()
{
if ! iptables -S mwan3_ifaces -t mangle &> /dev/null; then
iptables -N mwan3_ifaces -t mangle
fi
if ! iptables -S mwan3_rules -t mangle &> /dev/null; then
iptables -N mwan3_rules -t mangle
fi
if ! iptables -S mwan3_connected -t mangle &> /dev/null; then
iptables -N mwan3_connected -t mangle
fi
if ! iptables -S mwan3_hook -t mangle &> /dev/null; then
iptables -N mwan3_hook -t mangle
iptables -A mwan3_hook -t mangle -j CONNMARK --restore-mark --nfmask 0xff00 --ctmask 0xff00
iptables -A mwan3_hook -t mangle -m mark --mark 0x0/0xff00 -j mwan3_ifaces
iptables -A mwan3_hook -t mangle -m mark --mark 0x0/0xff00 -j mwan3_connected
iptables -A mwan3_hook -t mangle -m mark --mark 0x0/0xff00 -j mwan3_rules
iptables -A mwan3_hook -t mangle -j CONNMARK --save-mark --nfmask 0xff00 --ctmask 0xff00
fi
if ! iptables -S mwan3_track_hook -t mangle &> /dev/null; then
iptables -N mwan3_track_hook -t mangle
fi
if ! iptables -S PREROUTING -t mangle | grep mwan3_hook &> /dev/null; then
iptables -A PREROUTING -t mangle -j mwan3_hook
fi
if ! iptables -S OUTPUT -t mangle | grep mwan3_hook &> /dev/null; then
iptables -A OUTPUT -t mangle -j mwan3_hook
fi
if ! iptables -S OUTPUT -t mangle | grep mwan3_track_hook &> /dev/null; then
iptables -A OUTPUT -t mangle -j mwan3_track_hook
fi
iptables -F mwan3_rules -t mangle
}
mwan3_set_connected_iptables()
{
local connected_networks
if iptables -S mwan3_connected -t mangle &> /dev/null; then
iptables -F mwan3_connected -t mangle
for connected_networks in $(ip -4 route | awk '{print $1}' | egrep '[0-9]{1,3}(\.[0-9]{1,3}){3}'); do
iptables -A mwan3_connected -t mangle -d $connected_networks -m mark --mark 0x0/0xff00 -j MARK --set-xmark 0xff00/0xff00
done
iptables -I mwan3_connected -t mangle -d 224.0.0.0/3 -m mark --mark 0x0/0xff00 -j MARK --set-xmark 0xff00/0xff00
iptables -I mwan3_connected -t mangle -d 127.0.0.0/8 -m mark --mark 0x0/0xff00 -j MARK --set-xmark 0xff00/0xff00
fi
}
mwan3_set_iface_iptables()
{
local local_net local_nets
local_net=$(ip -4 route list dev $DEVICE scope link | awk '{print $1}' | egrep '[0-9]{1,3}(\.[0-9]{1,3}){3}')
if ! iptables -S mwan3_iface_$INTERFACE -t mangle &> /dev/null; then
iptables -N mwan3_iface_$INTERFACE -t mangle
fi
iptables -F mwan3_iface_$INTERFACE -t mangle
iptables -D mwan3_ifaces -t mangle -i $DEVICE -m mark --mark 0x0/0xff00 -j mwan3_iface_$INTERFACE &> /dev/null
if [ $ACTION == "ifup" ]; then
if [ -n "$local_net" ]; then
for local_nets in $local_net ; do
if [ $ACTION == "ifup" ]; then
iptables -I mwan3_iface_$INTERFACE -t mangle -s $local_net -m mark --mark 0x0/0xff00 -m comment --comment "$INTERFACE" -j MARK --set-xmark 0xff00/0xff00
fi
done
fi
iptables -A mwan3_iface_$INTERFACE -t mangle -m mark --mark 0x0/0xff00 -m comment --comment "$INTERFACE" -j MARK --set-xmark $(($iface_id*256))/0xff00
iptables -A mwan3_ifaces -t mangle -i $DEVICE -m mark --mark 0x0/0xff00 -j mwan3_iface_$INTERFACE
fi
if [ $ACTION == "ifdown" ]; then
iptables -X mwan3_iface_$INTERFACE -t mangle
fi
}
mwan3_set_iface_route()
{
ip -4 route flush table $iface_id
[ $ACTION == "ifup" ] && ip -4 route add table $iface_id default $route_args
}
mwan3_set_iface_rules()
{
while [ -n "$(ip -4 rule list | awk '$1 == "'$(($iface_id+1000)):'"')" ]; do
ip -4 rule del pref $(($iface_id+1000))
done
while [ -n "$(ip -4 rule list | awk '$1 == "'$(($iface_id+2000)):'"')" ]; do
ip -4 rule del pref $(($iface_id+2000))
done
while [ -n "$(ip -4 rule list | awk '$1 == "2254:"')" ]; do
ip -4 rule del pref 2254
done
[ $ACTION == "ifup" ] && ip -4 rule add pref $(($iface_id+1000)) iif $DEVICE lookup main
[ $ACTION == "ifup" ] && ip -4 rule add pref $(($iface_id+2000)) fwmark $(($iface_id*256))/0xff00 lookup $iface_id
ip rule add pref 2254 fwmark 0xfe00/0xff00 unreachable
}
mwan3_track()
{
local track_ip track_ips reliability count timeout interval down up
mwan3_list_track_ips()
{
track_ips="$1 $track_ips"
}
config_list_foreach $INTERFACE track_ip mwan3_list_track_ips
if [ -n "$track_ips" ]; then
config_get reliability $INTERFACE reliability 1
config_get count $INTERFACE count 1
config_get timeout $INTERFACE timeout 4
config_get interval $INTERFACE interval 10
config_get down $INTERFACE down 5
config_get up $INTERFACE up 5
if ! iptables -S mwan3_track_$INTERFACE -t mangle &> /dev/null; then
iptables -N mwan3_track_$INTERFACE -t mangle
iptables -A mwan3_track_hook -t mangle -p icmp -m icmp --icmp-type 8 -m length --length 32 -j mwan3_track_$INTERFACE
fi
iptables -F mwan3_track_$INTERFACE -t mangle
for track_ip in $track_ips; do
iptables -A mwan3_track_$INTERFACE -t mangle -d $track_ip -j MARK --set-xmark 0xff00/0xff00
done
[ -x /usr/sbin/mwan3track ] && /usr/sbin/mwan3track $INTERFACE $DEVICE $reliability $count $timeout $interval $down $up $track_ips &
else
iptables -D mwan3_track_hook -t mangle -p icmp -m icmp --icmp-type 8 -m length --length 32 -j mwan3_track_$INTERFACE &> /dev/null
iptables -F mwan3_track_$INTERFACE -t mangle &> /dev/null
iptables -X mwan3_track_$INTERFACE -t mangle &> /dev/null
fi
}
mwan3_set_policy()
{
local iface_count iface_id metric probability weight
config_get INTERFACE $1 interface
config_get metric $1 metric 1
config_get weight $1 weight 1
[ -n "$INTERFACE" ] || return 0
config_foreach mwan3_get_iface_id interface
[ -n "$iface_id" ] || return 0
if iptables -S mwan3_iface_$INTERFACE -t mangle &> /dev/null; then
if [ "$metric" -lt "$lowest_metric" ]; then
total_weight=$weight
iptables -F mwan3_policy_$policy -t mangle
iptables -A mwan3_policy_$policy -t mangle -m mark --mark 0x0/0xff00 -m comment --comment "$INTERFACE $weight $weight" -j MARK --set-xmark $(($iface_id*256))/0xff00
lowest_metric=$metric
elif [ "$metric" -eq "$lowest_metric" ]; then
total_weight=$(($total_weight+$weight))
probability=$(($weight*1000/$total_weight))
if [ "$probability" -lt 10 ]; then
probability="0.00$probability"
elif [ $probability -lt 100 ]; then
probability="0.0$probability"
elif [ $probability -lt 1000 ]; then
probability="0.$probability"
else
probability="1"
fi
probability="-m statistic --mode random --probability $probability"
iptables -I mwan3_policy_$policy -t mangle -m mark --mark 0x0/0xff00 $probability -m comment --comment "$INTERFACE $weight $total_weight" -j MARK --set-xmark $(($iface_id*256))/0xff00
fi
fi
}
mwan3_set_policies_iptables()
{
local lowest_metric policy total_weight
policy=$1
if [ "$policy" != $(echo "$policy" | cut -c1-15) ]; then
logger -t mwan3 -p warn "Policy $policy exceeds max of 15 chars. Not setting policy" && return 0
fi
if ! iptables -S mwan3_policy_$policy -t mangle &> /dev/null; then
iptables -N mwan3_policy_$policy -t mangle
fi
iptables -F mwan3_policy_$policy -t mangle
iptables -A mwan3_policy_$policy -t mangle -m mark --mark 0x0/0xff00 -m comment --comment "unreachable" -j MARK --set-xmark 0xfe00/0xff00
lowest_metric=256
total_weight=0
config_list_foreach $policy use_member mwan3_set_policy
iptables -X $policy -t mangle &> /dev/null
}
mwan3_set_user_rules_iptables()
{
local proto src_ip src_port dest_ip dest_port use_policy
config_get proto $1 proto all
config_get src_ip $1 src_ip 0.0.0.0/0
config_get src_port $1 src_port 0:65535
config_get dest_ip $1 dest_ip 0.0.0.0/0
config_get dest_port $1 dest_port 0:65535
config_get use_policy $1 use_policy
if [ -n "$use_policy" ]; then
if [ "$use_policy" == "default" ]; then
use_policy="MARK --set-xmark 0xff00/0xff00"
elif [ "$use_policy" == "unreachable" ]; then
use_policy="MARK --set-xmark 0xfe00/0xff00"
else
use_policy="mwan3_policy_$use_policy"
fi
case $proto in
tcp|udp)
iptables -A mwan3_rules -t mangle -p $proto -s $src_ip -d $dest_ip -m multiport --sports $src_port -m multiport --dports $dest_port -m mark --mark 0/0xff00 -m comment --comment "$1" -j $use_policy &> /dev/null
;;
*)
iptables -A mwan3_rules -t mangle -p $proto -s $src_ip -d $dest_ip -m mark --mark 0/0xff00 -m comment --comment "$1" -j $use_policy &> /dev/null
;;
esac
fi
}
mwan3_ifupdown()
{
local counter enabled iface_count iface_id route_args wan_metric
[ -n "$DEVICE" ] || exit 0
[ -n "$INTERFACE" ] || exit 0
[ "$(uci get -P /var/state mwan3.$INTERFACE 2> /dev/null)" == "interface" ] || return 0
config_load mwan3
config_get enabled $INTERFACE enabled 0
counter=0
if [ $ACTION == "ifup" ]; then
[ "$enabled" -eq 1 ] || exit 0
while [ -z "$(ip -4 route list dev $DEVICE default | head -1)" -a "$counter" -lt 10 ]; do
sleep 1
let counter++
if [ "$counter" -ge 10 ]; then
logger -t mwan3 -p warn "Could not find gateway for interface $INTERFACE ($DEVICE)" && exit 0
fi
done
mwan3_get_route_args
fi
while [ "$(pgrep -f -o hotplug-call)" -ne $$ -a "$counter" -lt 60 ]; do
sleep 1
let counter++
if [ "$counter" -ge 60 ]; then
logger -t mwan3 -p warn "Timeout waiting for older hotplug processes to finish. $ACTION interface $INTERFACE ($DEVICE) aborted" && exit 0
fi
done
config_foreach mwan3_get_iface_id interface
[ -n "$iface_id" ] || exit 0
[ "$iface_count" -le 250 ] || exit 0
unset iface_count
unset counter
logger -t mwan3 -p notice "$ACTION interface $INTERFACE ($DEVICE)"
mwan3_set_general_iptables
mwan3_set_iface_iptables
mwan3_set_iface_route
mwan3_set_iface_rules
[ $ACTION == "ifup" ] && mwan3_track
config_foreach mwan3_set_policies_iptables policy
config_foreach mwan3_set_user_rules_iptables rule
}
case "$ACTION" in
ifup|ifdown)
mwan3_ifupdown
mwan3_set_connected_iptables
;;
esac

+ 20
- 0
net/mwan3/files/etc/init.d/mwan3 View File

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#!/bin/sh /etc/rc.common
START=99
start() {
/usr/sbin/mwan3 start
}
stop() {
/usr/sbin/mwan3 stop
}
restart() {
stop
start
}
boot() {
# Don't start on boot, mwan3 is started by hotplug event.
return 0
}

+ 208
- 0
net/mwan3/files/usr/sbin/mwan3 View File

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#!/bin/sh /etc/rc.common
. /lib/network/config.sh
extra_help() {
cat <<EOF
ifup <iface> Start service on interface
ifdown <iface> Stop service on interface
interfaces Show interfaces status
policies Show policies status
rules Show rules status
status Show all status
EOF
}
EXTRA_COMMANDS="ifdown ifup interfaces policies rules status"
EXTRA_HELP="$(extra_help)"
ifdown()
{
if [ -z "$1" ]; then
echo "Error: Expecting interface. Usage: mwan3 ifdown <interface>" && exit 0
fi
if [ -n "$2" ]; then
echo "Error: Too many arguments. Usage: mwan3 ifdown <interface>" && exit 0
fi
local device
device=$(uci get -p /var/state network.$1.ifname) &> /dev/null
if [ -e /var/run/mwan3track-$1.pid ] ; then
kill $(cat /var/run/mwan3track-$1.pid)
rm /var/run/mwan3track-$1.pid
fi
if [ -n "$device" ] ; then
ACTION=ifdown INTERFACE=$1 DEVICE=$device /sbin/hotplug-call iface
fi
}
ifup()
{
config_load mwan3
if [ -z "$1" ]; then
echo "Expecting interface. Usage: mwan3 ifup <interface>" && exit 0
fi
if [ -n "$2" ]; then
echo "Too many arguments. Usage: mwan3 ifup <interface>" && exit 0
fi
local device enabled
config_get enabled "$1" enabled 0
device=$(uci get -p /var/state network.$1.ifname) &> /dev/null
if [ -n "$device" ] ; then
[ "$enabled" -eq 1 ] && ACTION=ifup INTERFACE=$1 DEVICE=$device /sbin/hotplug-call iface
fi
}
interfaces()
{
config_load mwan3
local device enabled iface_id tracking
echo "Interface status:"
check_iface_status()
{
device=$(uci get -p /var/state network.$1.ifname) &> /dev/null
if [ -z "$device" ]; then
echo "Interface $1 is unknown"
return 0
fi
config_get enabled "$1" enabled 0
let iface_id++
if [ -n "$(ps -w | grep mwan3track | grep -v grep | sed '/.*\/usr\/sbin\/mwan3track \([^ ]*\) .*$/!d;s//\1/' | awk '$1 == ("'$1'")')" ]; then
tracking="active"
else
tracking="down"
fi
if [ -n "$(ip rule | awk '$5 == ("'$device'")')" -a -n "$(iptables -S mwan3_iface_$1 -t mangle 2> /dev/null)" -a -n "$(ip -4 route list table $iface_id default dev $device 2> /dev/null)" ]; then
if [ -n "$(uci get -p /var/state mwan3.$1.track_ip 2> /dev/null)" ]; then
echo "Interface $1 is online (tracking $tracking)"
else
echo "Interface $1 is online"
fi
elif [ -n "$(ip rule | awk '$5 == ("'$device'")')" -o -n "$(iptables -S mwan3_iface_$1 -t mangle 2> /dev/null)" -o -n "$(ip -4 route list table $iface_id default dev $device 2> /dev/null)" ]; then
echo "Interface $1 error"
else
if [ "$enabled" -eq 1 ]; then
if [ -n "$(uci get -p /var/state mwan3.$1.track_ip 2> /dev/null)" ]; then
echo "Interface $1 is offline (tracking $tracking)"
else
echo "Interface $1 is offline"
fi
else
echo "Interface $1 is disabled"
fi
fi
}
config_foreach check_iface_status interface
echo -e
}
policies()
{
local percent policy share total_weight weight iface
for policy in $(iptables -S -t mangle | awk '{print $2}' | grep mwan3_policy_ | sort -u); do
echo "Policy $policy:" | sed 's/mwan3_policy_//g'
for iface in $(iptables -S $policy -t mangle | cut -s -d'"' -f2 | awk '{print $1}'); do
[ -n "$total_weight" ] || total_weight=$(iptables -S $policy -t mangle | grep "$iface " | cut -s -d'"' -f2 | awk '{print $3}')
done
if [ ! -z "${total_weight##*[!0-9]*}" ]; then
for iface in $(iptables -S $policy -t mangle | cut -s -d'"' -f2 | awk '{print $1}'); do
weight=$(iptables -S $policy -t mangle | grep "$iface " | cut -s -d'"' -f2 | awk '{print $2}')
percent=$(($weight*100/$total_weight))
echo " $iface ($percent%)"
done
else
echo " $(iptables -S $policy -t mangle | sed '/.*--comment \([^ ]*\) .*$/!d;s//\1/;q')"
fi
echo -e
unset iface
unset total_weight
done
}
rules()
{
if [ -n "$(iptables -S mwan3_connected -t mangle 2> /dev/null)" ]; then
echo "Known networks:"
echo "destination policy hits" | awk '{ printf "%-19s%-19s%-9s%s\n",$1,$2,$3}'
echo "------------------------------------------------"
iptables -L mwan3_connected -t mangle -n -v 2> /dev/null | tail -n+3 | sed 's/mark.*//' | sed 's/mwan3_policy_//g' | awk '{printf "%-19s%-19s%-9s%s\n",$9,"default",$1}'
echo -e
fi
if [ -n "$(iptables -S mwan3_rules -t mangle 2> /dev/null)" ]; then
echo "Active rules:"
echo "source destination proto src-port dest-port policy hits" | awk '{ printf "%-19s%-19s%-7s%-14s%-14s%-16s%-9s%s\n",$1,$2,$3,$4,$5,$6,$7}'
echo "---------------------------------------------------------------------------------------------------"
iptables -L mwan3_rules -t mangle -n -v 2> /dev/null | tail -n+3 | sed 's/mark.*//' | sed 's/mwan3_policy_//g' | awk '{ printf "%-19s%-19s%-7s%-14s%-14s%-16s%-9s%s\n",$8,$9,$4,$12,$15,$3,$1}'
echo -e
fi
}
status()
{
interfaces
policies
rules
}
start()
{
config_load mwan3
config_foreach ifup interface
}
stop()
{
local route rule table
killall mwan3track &> /dev/null
rm /var/run/mwan3track-* &> /dev/null
for route in $(ip route list table all | sed 's/.*table \([^ ]*\) .*/\1/' | awk '{print $1}' | awk '{for(i=1;i<=NF;i++) if($i+0>0) if($i+0<255) {print;break}}'); do
ip -4 route flush table $route &> /dev/null
done
for rule in $(ip -4 rule list | egrep '^[1-2][0-9]{3}\:' | cut -d ':' -f 1); do
ip -4 rule del pref $rule &> /dev/null
done
iptables -D PREROUTING -t mangle -j mwan3_hook &> /dev/null
iptables -D OUTPUT -t mangle -j mwan3_hook &> /dev/null
iptables -D OUTPUT -t mangle -j mwan3_track_hook &> /dev/null
for table in $(iptables -S -t mangle | awk '{print $2}' | grep mwan3 | sort -u); do
iptables -F $table -t mangle &> /dev/null
done
for table in $(iptables -S -t mangle | awk '{print $2}' | grep mwan3 | sort -u); do
iptables -X $table -t mangle &> /dev/null
done
}
restart() {
stop
start
}

+ 65
- 0
net/mwan3/files/usr/sbin/mwan3track View File

@ -0,0 +1,65 @@
#!/bin/sh
[ -z "$9" ] && echo "Error: should not be started manually" && exit 0
if [ -e /var/run/mwan3track-$1.pid ] ; then
kill $(cat /var/run/mwan3track-$1.pid) &> /dev/null
rm /var/run/mwan3track-$1.pid &> /dev/null
fi
echo "$$" > /var/run/mwan3track-$1.pid
score=$(($7+$8))
track_ips=$(echo $* | cut -d ' ' -f 9-99)
host_up_count=0
lost=0
while true; do
for track_ip in $track_ips; do
ping -I $2 -c $4 -W $5 -s 4 -q $track_ip &> /dev/null
if [ $? -eq 0 ]; then
let host_up_count++
else
let lost++
fi
done
if [ $host_up_count -lt $3 ]; then
let score--
if [ $score -lt $8 ]; then score=0 ; fi
if [ $score -eq $8 ]; then
logger -t mwan3track -p 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 $(($7+$8)) ] && [ $lost -gt 0 ]; then
logger -t mwan3track -p info "Lost $(($lost*$4)) ping(s) on interface $1 ($2)"
fi
let score++
lost=0
if [ $score -gt $8 ]; then score=$(($7+$8)); fi
if [ $score -eq $8 ]; then
logger -t mwan3track -p notice "Interface $1 ($2) is online"
env -i ACTION=ifup INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
rm /var/run/mwan3track-$1.pid
exit 0
fi
fi
host_up_count=0
sleep $6
done
exit 1

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