[PATCH] [qos-scripts] Reload IMQ only when needed

[openwrt.git] / package / qos-scripts / files / usr / lib / qos / generate.sh

diff --git a/package/qos-scripts/files/usr/lib/qos/generate.sh b/package/qos-scripts/files/usr/lib/qos/generate.sh
index 844bd70..9fc146b 100755 (executable)
--- a/package/qos-scripts/files/usr/lib/qos/generate.sh
+++ b/package/qos-scripts/files/usr/lib/qos/generate.sh
@@ -1,12 +1,21 @@
 #!/bin/sh
 [ -e /etc/functions.sh ] && . /etc/functions.sh || . ./functions.sh
-[ -x /sbin/modprobe ] && insmod="modprobe" || insmod="insmod"
+[ -x /sbin/modprobe ] && {
+       insmod="modprobe"
+       rmmod="$insmod -r"
+} || {
+       insmod="insmod"
+       rmmod="rmmod"
+}
 
 add_insmod() {
        eval "export isset=\${insmod_$1}"
        case "$isset" in
                1) ;;
-               *) append INSMOD "$insmod $* >&- 2>&-" "$N"; export insmod_$1=1;;
+               *) {
+                       [ "$2" ] && append INSMOD "$rmmod $1 >&- 2>&-" "$N"
+                       append INSMOD "$insmod $* >&- 2>&-" "$N"; export insmod_$1=1
+               };;
        esac
 }
 
@@ -59,16 +68,9 @@ parse_matching_rule() {
                        *:dsthost)
                                append "$var" "-d $value"
                        ;;
-                       *:ipp2p)
-                               add_insmod ipt_ipp2p
-                               append "$var" "-m ipp2p"
-                               case "$value" in
-                                       all) append "$var" "--edk --dc --kazaa --gnu --bit";;
-                                       *) append "$var" "--$value";;
-                               esac
-                       ;;
                        *:layer7)
                                add_insmod ipt_layer7
+                               add_insmod xt_layer7
                                append "$var" "-m layer7 --l7proto $value${pkt:+ --l7pkt}"
                        ;;
                        *:ports|*:srcports|*:dstports)
@@ -116,6 +118,22 @@ parse_matching_rule() {
                                add_insmod ipt_connbytes
                                append "$var" "-m connbytes --connbytes $value --connbytes-dir both --connbytes-mode bytes"
                        ;;
+                       *:tos)
+                                add_insmod ipt_tos
+                                case "$value" in
+                                        !*) append "$var" "-m tos ! --tos $value";;
+                                        *) append "$var" "-m tos --tos $value"
+                                esac
+                        ;;
+                       *:dscp)
+                                add_insmod ipt_dscp
+                               dscp_option="--dscp"
+                                [ -z "${value%%[EBCA]*}" ] && dscp_option="--dscp-class"
+                               case "$value" in
+                                               !*) append "$var" "-m dscp ! $dscp_option $value";;
+                                               *) append "$var" "-m dscp $dscp_option $value"
+                                esac
+                        ;;
                        *:direction)
                                value="$(echo "$value" | sed -e 's,-,:,g')"
                                if [ "$value" = "out" ]; then
@@ -146,6 +164,19 @@ parse_matching_rule() {
                                        !*) append "$var" "-m mark ! --mark $class";;
                                        *) append "$var" "-m mark --mark $class";;
                                esac
+                       ;;
+                       1:TOS)
+                               add_insmod ipt_TOS
+                               config_get TOS "$rule" 'TOS'
+                               suffix="-j TOS --set-tos "${TOS:-"Normal-Service"}
+                       ;;
+                       1:DSCP)
+                               add_insmod ipt_DSCP
+                               config_get DSCP "$rule" 'DSCP'
+                               [ -z "${DSCP%%[EBCA]*}" ] && set_value="--set-dscp-class $DSCP" \
+                               || set_value="--set-dscp $DSCP"
+                               suffix="-j DSCP $set_value"
+                       ;;
                esac
        done
        append "$var" "$suffix"
@@ -247,28 +278,27 @@ start_interface() {
        config_get device "$iface" device
        config_get_bool enabled "$iface" enabled 1
        [ -z "$device" -o 1 -ne "$enabled" ] && {
-               echo "Interface '$iface' not found or disabled." >&2
                return 1 
        }
        config_get upload "$iface" upload
-       config_get halfduplex "$iface" halfduplex
+       config_get_bool halfduplex "$iface" halfduplex
        config_get download "$iface" download
        config_get classgroup "$iface" classgroup
        config_get_bool overhead "$iface" overhead 0
        
        download="${download:-${halfduplex:+$upload}}"
        enum_classes "$classgroup"
-       for dir in up${halfduplex} ${download:+down}; do
+       for dir in ${halfduplex:-up} ${download:+down}; do
                case "$dir" in
                        up)
-                               [ "$overhead" = 1 ] && upload=$(($upload * 98 / 100 - (32 * 128 / $upload)))
+                               [ "$overhead" = 1 ] && upload=$(($upload * 98 / 100 - (15 * 128 / $upload)))
                                dev="$device"
                                rate="$upload"
                                dl_mode=""
                                prefix="cls"
                        ;;
                        down)
-                               add_insmod imq numdevs="$num_imq"
+                               [ "$(ls -d /proc/sys/net/ipv4/conf/imq* 2>&- | wc -l)" -ne "$num_imq" ] && add_insmod imq numdevs="$num_imq"
                                config_get imqdev "$iface" imqdev
                                [ "$overhead" = 1 ] && download=$(($download * 98 / 100 - (80 * 1024 / $download)))
                                dev="imq$imqdev"
@@ -328,6 +358,16 @@ add_rules() {
                config_get target "$rule" target
                config_get target "$target" classnr
                config_get options "$rule" options
+
+               ## If we want to override the TOS field, let's clear the DSCP field first.
+               [ ! -z "$(echo $options | grep 'TOS')" ] && {
+                       s_options=${options%%TOS}
+                       add_insmod ipt_DSCP
+                       parse_matching_rule iptrule "$rule" "$s_options" "$prefix" "-j DSCP --set-dscp 0"
+                       append "$var" "$iptrule" "$N"
+                       unset iptrule
+               }
+
                parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target"
                append "$var" "$iptrule" "$N"
        done
@@ -361,11 +401,11 @@ start_cg() {
                append up "iptables -t mangle -A OUTPUT -o $device -j ${cg}" "$N"
                append up "iptables -t mangle -A FORWARD -o $device -j ${cg}" "$N"
                [ -z "$dl" ] || {
+                       append down "iptables -t mangle -A POSTROUTING -o $device -j ${cg}" "$N"
                        [ -z "$halfduplex" ] || {
                                append down "iptables -t mangle -A POSTROUTING -o $device -j IMQ --todev $imqdev" "$N"
                        }
                        append down "iptables -t mangle -A PREROUTING -i $device -j ${cg}" "$N"
-                       append down "iptables -t mangle -A POSTROUTING -o $device -j ${cg}" "$N"
                        append down "iptables -t mangle -A PREROUTING -i $device -j IMQ --todev $imqdev" "$N"
                }
        done