496 lines
12 KiB
Bash
Executable File
496 lines
12 KiB
Bash
Executable File
#!/bin/sh
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. /etc/functions.sh
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insmod="insmod"
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[ -f /sbin/modprobe ] && insmod="modprobe"
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add_insmod() {
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eval "export isset=\${insmod_$1}"
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case "$isset" in
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1) ;;
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*) append INSMOD "$insmod $* >&- 2>&-" "$N"; export insmod_$1=1;;
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esac
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}
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find_ifname() {(
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include /lib/network
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scan_interfaces
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config_get "$1" ifname
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)}
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parse_matching_rule() {
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local var="$1"
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local section="$2"
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local options="$3"
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local prefix="$4"
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local suffix="$5"
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local proto="$6"
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local mport=""
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local ports=""
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append "$var" "$prefix" "$N"
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for option in $options; do
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case "$option" in
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proto) config_get value "$section" proto; proto="${proto:-$value}";;
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esac
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done
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config_get type "$section" TYPE
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case "$type" in
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classify) unset pkt; append "$var" "-m mark --mark 0";;
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default) pkt=1; append "$var" "-m mark --mark 0";;
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reclassify) pkt=1;;
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esac
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append "$var" "${proto:+-p $proto}"
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for option in $options; do
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config_get value "$section" "$option"
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case "$pkt:$option" in
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*:srchost)
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append "$var" "-s $value"
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;;
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*:dsthost)
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append "$var" "-d $value"
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;;
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*:ipp2p)
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add_insmod ipt_ipp2p
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append "$var" "-m ipp2p"
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case "$value" in
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all) append "$var" "--edk --dc --kazaa --gnu --bit";;
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*) append "$var" "--$value";;
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esac
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;;
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*:layer7)
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add_insmod ipt_layer7
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append "$var" "-m layer7 --l7proto $value${pkt:+ --l7pkt}"
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;;
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*:ports|*:srcports|*:dstports)
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value="$(echo "$value" | sed -e 's,-,:,g')"
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lproto=${lproto:-tcp}
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case "$proto" in
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""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} -m multiport";;
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*) unset "$var"; return 0;;
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esac
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case "$option" in
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ports)
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config_set "$section" srcports ""
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config_set "$section" dstports ""
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config_set "$section" portrange ""
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append "$var" "--ports $value"
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;;
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srcports)
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config_set "$section" ports ""
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config_set "$section" dstports ""
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config_set "$section" portrange ""
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append "$var" "--sports $value"
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;;
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dstports)
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config_set "$section" ports ""
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config_set "$section" srcports ""
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config_set "$section" portrange ""
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append "$var" "--dports $value"
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;;
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esac
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ports=1
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;;
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*:portrange)
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config_set "$section" ports ""
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config_set "$section" srcports ""
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config_set "$section" dstports ""
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value="$(echo "$value" | sed -e 's,-,:,g')"
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case "$proto" in
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""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} --sport $value --dport $value";;
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*) unset "$var"; return 0;;
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esac
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ports=1
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;;
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1:pktsize)
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value="$(echo "$value" | sed -e 's,-,:,g')"
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add_insmod ipt_length
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append "$var" "-m length --length $value"
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;;
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1:limit)
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add_insmod ipt_limit
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append "$var" "-m limit --limit $value"
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;;
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1:tcpflags)
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case "$proto" in
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tcp) append "$var" "-m tcp --tcp-flags ALL $value";;
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*) unset $var; return 0;;
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esac
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;;
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1:mark)
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config_get class "${value##!}" classnr
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[ -z "$class" ] && continue;
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case "$value" in
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!*) append "$var" "-m mark ! --mark $class";;
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*) append "$var" "-m mark --mark $class";;
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esac
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esac
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done
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append "$var" "$suffix"
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case "$ports:$proto" in
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1:) parse_matching_rule "$var" "$section" "$options" "$prefix" "$suffix" "udp";;
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esac
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}
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config_cb() {
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option_cb() {
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return 0
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}
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# Section start
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case "$1" in
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interface)
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config_set "$1" "classgroup" "Default"
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config_set "$1" "upload" "128"
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config_set "$1" "download" "1024"
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;;
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classify|default|reclassify)
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option_cb() {
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append options "$1"
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}
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;;
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esac
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# Section end
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config_get TYPE "$CONFIG_SECTION" TYPE
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case "$TYPE" in
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interface)
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config_get enabled "$CONFIG_SECTION" enabled
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config_get download "$CONFIG_SECTION" download
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config_get classgroup "$CONFIG_SECTION" classgroup
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config_set "$CONFIG_SECTION" imqdev "$C"
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[ -z "$enabled" -o "$(($enabled))" -eq 0 ] || {
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C=$(($C+1))
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INTERFACES="$INTERFACES $CONFIG_SECTION"
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config_set "$classgroup" enabled 1
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}
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config_get device "$CONFIG_SECTION" device
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[ -z "$device" ] && device="$(find_ifname ${CONFIG_SECTION})"
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config_set "$CONFIG_SECTION" device "${device:-eth0}"
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;;
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classgroup) append CG "$CONFIG_SECTION";;
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classify|default|reclassify)
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case "$TYPE" in
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classify) var="ctrules";;
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*) var="rules";;
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esac
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config_get target "$CONFIG_SECTION" target
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config_set "$CONFIG_SECTION" options "$options"
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append "$var" "$CONFIG_SECTION"
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unset options
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;;
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esac
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}
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class_main_qdisc() {
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local device="$1"
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awk -f - <<EOF
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BEGIN {
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limit = int("$maxrate")
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m2 = int("$m2")
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dmax = int("$dmax")
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umax = int("$umax")
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share = int("$share")
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if (!(m2 > 0)) {
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dmax = 500
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umax = 1500
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m2 = 10
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rt = 0
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} else {
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rt = 1
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}
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cdata = ""
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pdmax = int (dmax + (umax * 8 / limit))
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if (rt == 1) {
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if (share > 0) cdata = " rt"
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else cdata = " ls"
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if ((umax > 0) && (dmax > 0)) {
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cdata = cdata " umax " umax "b dmax " pdmax "ms"
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}
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cdata = cdata " rate " m2 "kbit"
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}
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if (share > 0) {
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if ((m2 > 0) && (umax > 0) && (dmax > 0)) {
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cdata = cdata " ls umax " umax "b dmax " pdmax "ms rate " share "kbit"
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} else {
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cdata = cdata " ls m1 " share "kbit d 500ms m2 " share "kbit"
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}
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}
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print "tc class add dev $device parent 1:1 classid 1:${classnr}0 hfsc" cdata " ul rate " limit "kbit"
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}
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EOF
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}
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class_leaf_qdisc() {
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local device="$1"
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awk -f - <<EOF
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function qlen(rate, m2, umax, dmax, qb, qr, qt, ql) {
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qlen_min = 5 # minimum queue length
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qlen_base = 1.7 # base value - queueing time in seconds
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qlen_avgr = 0.7 # avgrate modifier
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qlen_dmax = 0.0 # dmax modifier
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# bits in a packet
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qb = 1500
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if ((m2 > 0) && (umax > 0)) qb -= int((1500 - umax) * qlen_pkt)
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qb *= 8
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# rate in bits/s
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qr = rate
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qr -= int((rate - m2) * qlen_avgr)
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qr *= 1024
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# queue time
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qt = qlen_base + qlen_dmax * (dmax / 1000)
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# queue length
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ql = int(qr * qt / qb)
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if (ql < qlen_min) ql = qlen_min
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return ql
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}
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BEGIN {
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sfq_dthresh = 25 # use sfq for download if pktdelay set to this or lower
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limit = int("$maxrate")
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m2 = int("$m2")
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dmax = int("$dmax")
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umax = int("$umax")
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if (!(m2 > 0)) {
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dmax = 500
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umax = 1500
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m2 = 10
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}
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cqlen = ${dl_mode:+2 * }qlen(limit, m2, umax, dmax)
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printf "tc qdisc add dev $device parent 1:${classnr}0 handle ${classnr}00: "
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if (("$dir" != "down") || ((dmax > 0) && (dmax <= sfq_dthresh))) {
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print "sfq perturb 10 limit " cqlen
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} else {
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avpkt = 1200
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min = int(limit * 1024 / 8 * 0.1)
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dqb = cqlen * 1500
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max = int(min + (dqb - min) * 0.25)
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burst = int((2 * min + max) / (3 * avpkt))
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print "red min " min " max " max " burst " burst " avpkt " avpkt " limit " dqb " probability 0.04 ecn"
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}
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}
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EOF
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}
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enum_classes() {
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local c="0"
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config_get classes "$1" classes
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config_get default "$1" default
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for class in $classes; do
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c="$(($c + 1))"
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config_set "${class}" classnr $c
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case "$class" in
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$default) class_default=$c;;
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esac
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done
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class_default="${class_default:-$c}"
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}
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cls_var() {
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local varname="$1"
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local class="$2"
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local name="$3"
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local type="$4"
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local default="$5"
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local tmp tmp1 tmp2
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config_get tmp1 "$class" "$name"
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config_get tmp2 "${class}_${type}" "$name"
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tmp="${tmp2:-$tmp1}"
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tmp="${tmp:-$tmp2}"
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export ${varname}="${tmp:-$default}"
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}
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start_interface() {
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local iface="$1"
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local num_imq="$2"
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config_get device "$iface" device
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config_get enabled "$iface" enabled
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[ -z "$device" -o -z "$enabled" ] && exit
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config_get upload "$iface" upload
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config_get halfduplex "$iface" halfduplex
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config_get download "$iface" download
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config_get classgroup "$iface" classgroup
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download="${download:-${halfduplex:+$upload}}"
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enum_classes "$classgroup"
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for dir in up${halfduplex} ${download:+down}; do
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case "$dir" in
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up)
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upload=$(($upload * 98 / 100 - 10))
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dev="$device"
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rate="$upload"
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dl_mode=""
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prefix="cls"
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;;
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down)
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add_insmod imq numdevs="$num_imq"
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config_get imqdev "$iface" imqdev
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download=$(($download * 96 / 100 - 64))
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dev="imq$imqdev"
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rate="$download"
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dl_mode=1
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prefix="d_cls"
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;;
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*) continue;;
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esac
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for class in $classes; do
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cls_var umax "$class" packetsize $dir 1500
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cls_var dmax "$class" packetdelay $dir 500
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cls_var maxrate "$class" limitrate $dir 100
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cls_var share "$class" linksharing $dir 0
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cls_var m2 "$class" avgrate $dir 0
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maxrate=$(($maxrate * $rate / 100))
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share=$(($share * $rate / 100))
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m2=$(($m2 * $rate / 100))
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config_get classnr "$class" classnr
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append ${prefix}q "$(class_main_qdisc "$dev" "$iface")" "$N"
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append ${prefix}l "$(class_leaf_qdisc "$dev" "$iface")" "$N"
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append ${prefix}f "tc filter add dev $dev parent 1: prio $classnr protocol ip handle $classnr fw flowid 1:${classnr}0" "$N"
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done
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export dev_${dir}="ifconfig $dev up txqueuelen 5 >&- 2>&-
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tc qdisc del dev $dev root >&- 2>&-
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tc qdisc add dev $dev root handle 1: hfsc default ${class_default}0
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tc class add dev $dev parent 1: classid 1:1 hfsc sc rate ${rate}kbit ul rate ${rate}kbit"
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done
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add_insmod cls_fw
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add_insmod sch_hfsc
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add_insmod sch_sfq
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add_insmod sch_red
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cat <<EOF
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${INSMOD:+$INSMOD$N}${dev_up:+$dev_up
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$clsq
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$clsl
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$clsf
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}${imqdev:+$dev_down
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$d_clsq
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$d_clsl
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$d_clsf
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}
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EOF
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unset INSMOD clsq clsf clsl d_clsq d_clsl d_clsf dev_up dev_down
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}
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start_interfaces() {
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local C="$1"
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for iface in $INTERFACES; do
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start_interface "$iface" "$C"
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done
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}
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add_rules() {
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local var="$1"
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local rules="$2"
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local prefix="$3"
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for rule in $rules; do
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unset iptrule
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config_get target "$rule" target
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config_get target "$target" classnr
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config_get options "$rule" options
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parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target"
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append "$var" "$iptrule" "$N"
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done
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}
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start_cg() {
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local cg="$1"
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local iptrules
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local pktrules
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local sizerules
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local download
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enum_classes "$cg"
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add_rules iptrules "$ctrules" "iptables -t mangle -A ${cg}_ct"
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config_get classes "$cg" classes
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for class in $classes; do
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config_get mark "$class" classnr
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config_get maxsize "$class" maxsize
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[ -z "$maxsize" -o -z "$mark" ] || {
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add_insmod ipt_length
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append pktrules "iptables -t mangle -A ${cg} -m mark --mark $mark -m length --length $maxsize: -j MARK --set-mark 0" "$N"
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}
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done
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add_rules pktrules "$rules" "iptables -t mangle -A ${cg}"
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for iface in $INTERFACES; do
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config_get classgroup "$iface" classgroup
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config_get device "$iface" device
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config_get imqdev "$iface" imqdev
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config_get dl "$iface" download
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config_get halfduplex "$iface" halfduplex
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add_insmod ipt_IMQ
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append up "iptables -t mangle -A OUTPUT -o $device -j ${cg}" "$N"
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append up "iptables -t mangle -A FORWARD -o $device -j ${cg}" "$N"
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[ -z "$dl" ] || {
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[ -z "$halfduplex" ] || {
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append down "iptables -t mangle -A POSTROUTING -o $device -j IMQ --todev $imqdev" "$N"
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}
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append down "iptables -t mangle -A PREROUTING -i $device -j ${cg}" "$N"
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append down "iptables -t mangle -A PREROUTING -i $device -j IMQ --todev $imqdev" "$N"
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}
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done
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cat <<EOF
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$INSMOD
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iptables -t mangle -N ${cg} >&- 2>&-
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iptables -t mangle -N ${cg}_ct >&- 2>&-
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${iptrules:+${iptrules}${N}iptables -t mangle -A ${cg}_ct -j CONNMARK --save-mark}
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iptables -t mangle -A ${cg} -j CONNMARK --restore-mark
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iptables -t mangle -A ${cg} -m mark --mark 0 -j ${cg}_ct
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$pktrules
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$up$N${down:+${down}$N}
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EOF
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unset INSMOD
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}
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start_firewall() {
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add_insmod ipt_multiport
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add_insmod ipt_CONNMARK
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cat <<EOF
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iptables -t mangle -F
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iptables -t mangle -X
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EOF
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for group in $CG; do
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start_cg $group
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done
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}
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C="0"
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INTERFACES=""
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config_load qos
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C="0"
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for iface in $INTERFACES; do
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export C="$(($C + 1))"
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done
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case "$1" in
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all)
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start_interfaces "$C"
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start_firewall
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;;
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interface)
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start_interface "$2" "$C"
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;;
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interfaces)
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start_interfaces
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;;
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firewall)
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start_firewall
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;;
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esac
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