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Clean up distribute_load()

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
This commit is contained in:
Tom Eastep 2015-05-27 06:58:10 -07:00
parent 93c7e2c2f7
commit 18348ef6f1
1 changed files with 16 additions and 14 deletions
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30
Shorewall/Perl/lib.core
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@ -604,11 +604,12 @@ interface_enabled() {
distribute_load() {
local interface
local currentload
local load
local mark
local totalload
local temp
local currentload # Total load of enabled interfaces
local load # Specified load of an enabled interface
local mark # Mark of an enabled interface
local totalload # Total load of all interfaces - usually 1.000000
local nload # Normalized load of an enabled interface
local var # Interface name to embed in a variable name
totalload=$1
shift
@ -617,10 +618,11 @@ distribute_load() {
for interface in $@; do
if interface_enabled $interface; then
var=$(echo $interface | sed 's/[.-]/_/g')
load=$(cat ${VARDIR}/${interface}_load)
eval ${interface}_load=$load
eval ${var}_load=$load
mark=$(cat ${VARDIR}/${interface}_mark)
eval ${interface}_mark=$mark
eval ${var}_mark=$mark
currentload=$( bc <<EOF
scale=8
$currentload + $load
@ -633,25 +635,25 @@ EOF
for interface in $@; do
qt $g_tool -t mangle -F ~$interface
eval load=\$${interface}_load
eval mark=\$${interface}_mark
var=$(echo $interface | sed 's/[.-]/_/g')
eval load=\$${var}_load
eval mark=\$${var}_mark
if [ -n "$load" ]; then
temp=$load
load=$(bc <<EOF
nload=$(bc <<EOF
scale=8
( $load / $currentload ) * $totalload
EOF
)
currentload=$(bc <<EOF
scale=8
$currentload - $temp
$currentload - $load
EOF
)
case $load in
case $nload in
.*|0.*)
run_iptables -t mangle -A ~$interface -m statistic --mode random --probability $load -j MARK --set-mark $mark
run_iptables -t mangle -A ~$interface -m statistic --mode random --probability $nload -j MARK --set-mark $mark
;;
*)
run_iptables -t mangle -A ~$interface -j MARK --set-mark $mark