[packages] multiwan:

- updated revision
- overhauled probability matrix for netfilter route selection
- added configuration options for specifying method of traffic distribution per default route/rule/failover (iproute/netfilter)


git-svn-id: svn://svn.openwrt.org/openwrt/packages@21448 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
craigc 2010-05-14 12:41:50 +00:00
parent 9ecb712861
commit f09ff069e5
3 changed files with 32 additions and 39 deletions

View File

@ -8,8 +8,8 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=multiwan
PKG_VERSION:=1.0.11
PKG_RELEASE:=2
PKG_VERSION:=1.0.12
PKG_RELEASE:=1
include $(INCLUDE_DIR)/package.mk

View File

@ -32,10 +32,10 @@ config 'mwanfw'
config 'mwanfw'
option 'src' '192.168.0.3'
option 'proto' 'icmp'
option 'wanrule' 'wan'
option 'wanrule' 'balancer'
config 'mwanfw'
option 'dst' 'www.whatismyip.com'
option 'wanrule' 'balancer'
option 'wanrule' 'fastbalancer'

View File

@ -39,10 +39,12 @@ add() {
update_cache
if [ "$existing_failover" == "2" ]; then
if [ "$failover_to" != "balancer" -a "$failover_to" != "disable" -a "$failover_to_wanid" != "$wanid" ]; then
if [ "$failover_to" != "balancer" -a "$failover_to" != "fastbalancer" -a "$failover_to" != "disable" -a "$failover_to_wanid" != "$wanid" ]; then
iptables -I FW${wanid}MARK 2 -t mangle -j FW${failover_to_wanid}MARK
elif [ "$failover_to" == "balancer" ]; then
iptables -I FW${wanid}MARK 2 -t mangle -j LoadBalancer
elif [ "$failover_to" == "fastbalancer" ]; then
iptables -I FW${wanid}MARK 2 -t mangle -j FastBalancer
fi
fi
mwnote "$1 has failed and is currently offline."
@ -317,6 +319,8 @@ iptables -t mangle -F MultiWanPostHandler
iptables -t mangle -X MultiWanPostHandler
iptables -t mangle -F LoadBalancer
iptables -t mangle -X LoadBalancer
iptables -t mangle -F FastBalancer
iptables -t mangle -X FastBalancer
i=0
while [ $i -lt $wancount ]; do
@ -429,11 +433,13 @@ mwanrule() {
return
fi
if [ "$wanrule" != "balancer" ]; then
if [ "$wanrule" != "balancer" -a "$wanrule" != "fastbalancer" ]; then
wanrule=$(query_config wanid ${wanrule})
wanrule="FW${wanrule}MARK"
elif [ "$wanrule" == "balancer" ]; then
wanrule="LoadBalancer"
elif [ "$wanrule" == "fastbalancer" ]; then
wanrule="FastBalancer"
fi
if [ "$dst" == "all" ]; then
dst=$NULL
@ -559,11 +565,12 @@ fi
iptables -t mangle -N MultiWan
iptables -t mangle -N LoadBalancer
iptables -t mangle -N FastBalancer
iptables -t mangle -N MultiWanRules
iptables -t mangle -N MultiWanDNS
iptables -t mangle -N MultiWanPreHandler
iptables -t mangle -N MultiWanPostHandler
iptables -t mangle -N MultiWanLoadBalancer
iptables -t mangle -N MultiWanFastBalancer
echo "## Creating FW Rules ##"
i=0
@ -578,18 +585,27 @@ done
iptables -t mangle -A LoadBalancer -j MARK --set-mark 0x123
iptables -t mangle -A LoadBalancer -j CONNMARK --save-mark
if [ -z "$CHKFORMODULE" ]; then
iptables -t mangle -A FastBalancer -j MARK --set-mark 0x124
iptables -t mangle -A FastBalancer -j CONNMARK --save-mark
else
mwnote "Fast Balancer is unavailable due to missing netfilter statistics module, resorting to standard route based load balancer."
iptables -t mangle -A FastBalancer -j MARK --set-mark 0x123
iptables -t mangle -A FastBalancer -j CONNMARK --save-mark
fi
iptables -t mangle -I PREROUTING -j MultiWan
iptables -t mangle -I PREROUTING 2 -j MultiWanPreHandler
iptables -t mangle -I PREROUTING 3 -j MultiWanDNS
iptables -t mangle -I PREROUTING 4 -j MultiWanRules
iptables -t mangle -I PREROUTING 5 -j MultiWanLoadBalancer
iptables -t mangle -I PREROUTING 5 -j MultiWanFastBalancer
iptables -t mangle -I FORWARD -j MultiWan
iptables -t mangle -I OUTPUT -j MultiWan
iptables -t mangle -I OUTPUT 2 -j MultiWanDNS
iptables -t mangle -I OUTPUT 3 -j MultiWanRules
iptables -t mangle -I OUTPUT 4 -j MultiWanLoadBalancer
iptables -t mangle -I OUTPUT 4 -j MultiWanFastBalancer
iptables -t mangle -I OUTPUT 5 -j MultiWanPostHandler
@ -603,9 +619,11 @@ refresh_dns
config_load "multiwan"
config_foreach mwanrule mwanfw
if [ "$default_route" != "balancer" ]; then
if [ "$default_route" != "balancer" -a "$default_route" != "fastbalancer" ]; then
default_route_id=$(query_config wanid $default_route)
iptables -t mangle -A MultiWanRules -m mark --mark 0x0 -j FW${default_route_id}MARK
elif [ "$default_route" == "fastbalancer" ]; then
iptables -t mangle -A MultiWanRules -m mark --mark 0x0 -j FastBalancer
else
iptables -t mangle -A MultiWanRules -m mark --mark 0x0 -j LoadBalancer
fi
@ -636,14 +654,8 @@ local weight
local nexthop
local pre_nexthop_chk
local rand_probability
local last_probability
local total_weight
local total_wans
local roundme
local roundlen
local i
local x
local n
echo "## Refreshing Load Balancer ##"
@ -662,10 +674,9 @@ ip route flush table 123 > /dev/null 2>&1
done
done
iptables -F MultiWanLoadBalancer -t mangle
iptables -F MultiWanFastBalancer -t mangle
total_weight=0
total_wans=0
i=0
while [ $i -lt $wancount ]; do
@ -677,16 +688,9 @@ ifname=$(query_config ifname $group)
weight=`uci -q -P /var/state get multiwan.${group}.weight`
if [ "$gateway" != "x" -a "$ifname" != "x" -a "$failchk" != "x" -a "$weight" != "disable" ]; then
total_weight=$(expr $total_weight + $weight)
total_wans=$i
fi
done
last_probability=0
roundme=0
roundlen=0
x=0
n=0
i=0
while [ $i -lt $wancount ]; do
i=`expr $i + 1`
@ -700,19 +704,8 @@ weight=`uci -q -P /var/state get multiwan.${group}.weight`
if [ "$gateway" != "x" -a "$ifname" != "x" -a "$failchk" != "x" -a "$weight" != "disable" ]; then
nexthop="$nexthop nexthop via $gateway dev $ifname weight $weight"
n=$(expr $n + $last_probability)
last_probability=$(expr $x / $(expr $total_wans - $i + 1))
rand_probability=$(expr $(expr $weight \* 1000) / $total_weight)
roundlen=`expr length $rand_probability - 1`
roundme=${rand_probability:$roundlen}
rand_probability=$(echo $rand_probability | sed 's/\(..\)\(.\)/\1/g')
if [ $roundme -ge 5 ]; then
rand_probability=$(expr $rand_probability + 1)
fi
rand_probability=$(expr $rand_probability + $n + $last_probability)
x=$rand_probability
rand_probability=$(expr $(expr $weight \* 100) / $total_weight)
total_weight=$(expr $total_weight - $weight)
if [ $rand_probability -lt 10 ]; then
rand_probability="0.0${rand_probability}"
@ -723,7 +716,7 @@ x=$rand_probability
fi
if [ -z "$CHKFORMODULE" ]; then
iptables -A MultiWanLoadBalancer -t mangle -m mark --mark 0x123 -m statistic --mode random --probability $rand_probability -j FW${i}MARK
iptables -A MultiWanFastBalancer -t mangle -m mark --mark 0x124 -m statistic --mode random --probability $rand_probability -j FW${i}MARK
fi
fi