From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 .../qos-scripts/files/usr/lib/qos/generate.sh      | 499 +++++++++++++++++++++
 1 file changed, 499 insertions(+)
 create mode 100755 package/network/config/qos-scripts/files/usr/lib/qos/generate.sh

(limited to 'package/network/config/qos-scripts/files/usr/lib/qos/generate.sh')

diff --git a/package/network/config/qos-scripts/files/usr/lib/qos/generate.sh b/package/network/config/qos-scripts/files/usr/lib/qos/generate.sh
new file mode 100755
index 0000000..01f9b6b
--- /dev/null
+++ b/package/network/config/qos-scripts/files/usr/lib/qos/generate.sh
@@ -0,0 +1,499 @@
+#!/bin/sh
+[ -e /lib/functions.sh ] && . /lib/functions.sh || . ./functions.sh
+[ -x /sbin/modprobe ] && {
+	insmod="modprobe"
+	rmmod="$insmod -r"
+} || {
+	insmod="insmod"
+	rmmod="rmmod"
+}
+
+add_insmod() {
+	eval "export isset=\${insmod_$1}"
+	case "$isset" in
+		1) ;;
+		*) {
+			[ "$2" ] && append INSMOD "$rmmod $1 >&- 2>&-" "$N"
+			append INSMOD "$insmod $* >&- 2>&-" "$N"; export insmod_$1=1
+		};;
+	esac
+}
+
+[ -e /etc/config/network ] && {
+	# only try to parse network config on openwrt
+
+	find_ifname() {(
+		reset_cb
+		include /lib/network
+		scan_interfaces
+		config_get "$1" ifname
+	)}
+} || {
+	find_ifname() {
+		echo "Interface not found."
+		exit 1
+	}
+}
+
+parse_matching_rule() {
+	local var="$1"
+	local section="$2"
+	local options="$3"
+	local prefix="$4"
+	local suffix="$5"
+	local proto="$6"
+	local mport=""
+	local ports=""
+
+	append "$var" "$prefix" "$N"
+	for option in $options; do
+		case "$option" in
+			proto) config_get value "$section" proto; proto="${proto:-$value}";;
+		esac
+	done
+	config_get type "$section" TYPE
+	case "$type" in
+		classify) unset pkt; append "$var" "-m mark --mark 0/0x0f";;
+		default) pkt=1; append "$var" "-m mark --mark 0/0xf0";;
+		reclassify) pkt=1;;
+	esac
+	append "$var" "${proto:+-p $proto}"
+	for option in $options; do
+		config_get value "$section" "$option"
+		
+		case "$pkt:$option" in
+			*:srchost)
+				append "$var" "-s $value"
+			;;
+			*:dsthost)
+				append "$var" "-d $value"
+			;;
+			*:ports|*:srcports|*:dstports)
+				value="$(echo "$value" | sed -e 's,-,:,g')"
+				lproto=${lproto:-tcp}
+				case "$proto" in
+					""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} -m multiport";;
+					*) unset "$var"; return 0;;
+				esac
+				case "$option" in
+					ports)
+						config_set "$section" srcports ""
+						config_set "$section" dstports ""
+						config_set "$section" portrange ""
+						append "$var" "--ports $value"
+					;;
+					srcports)
+						config_set "$section" ports ""
+						config_set "$section" dstports ""
+						config_set "$section" portrange ""
+						append "$var" "--sports $value"
+					;;
+					dstports)
+						config_set "$section" ports ""
+						config_set "$section" srcports ""
+						config_set "$section" portrange ""
+						append "$var" "--dports $value"
+					;;
+				esac
+				ports=1
+			;;
+			*:portrange)
+				config_set "$section" ports ""
+				config_set "$section" srcports ""
+				config_set "$section" dstports ""
+				value="$(echo "$value" | sed -e 's,-,:,g')"
+				case "$proto" in
+					""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} --sport $value --dport $value";;
+					*) unset "$var"; return 0;;
+				esac
+				ports=1
+			;;
+			*:connbytes)
+				value="$(echo "$value" | sed -e 's,-,:,g')"
+				add_insmod xt_connbytes
+				append "$var" "-m connbytes --connbytes $value --connbytes-dir both --connbytes-mode bytes"
+			;;
+			*:comment)
+				add_insmod xt_comment
+				append "$var" "-m comment --comment '$value'"
+			;;
+			*:tos)
+                                add_insmod xt_dscp
+                                case "$value" in
+                                        !*) append "$var" "-m tos ! --tos $value";;
+                                        *) append "$var" "-m tos --tos $value"
+                                esac
+                        ;;
+			*:dscp)
+                                add_insmod xt_dscp
+				dscp_option="--dscp"
+                                [ -z "${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
+					append "$var" "-o $device"
+				elif [ "$value" = "in" ]; then
+					append "$var" "-i $device"
+				fi
+			;;
+			1:pktsize)
+				value="$(echo "$value" | sed -e 's,-,:,g')"
+				add_insmod xt_length
+				append "$var" "-m length --length $value"
+			;;
+			1:limit)
+				add_insmod xt_limit
+				append "$var" "-m limit --limit $value"
+			;;
+			1:tcpflags)
+				case "$proto" in
+					tcp) append "$var" "-m tcp --tcp-flags ALL $value";;
+					*) unset $var; return 0;;
+				esac
+			;;
+			1:mark)
+				config_get class "${value##!}" classnr
+				[ -z "$class" ] && continue;
+				case "$value" in
+					!*) append "$var" "-m mark ! --mark $class/0x0f";;
+					*) append "$var" "-m mark --mark $class/0x0f";;
+				esac
+			;;
+			1:TOS)
+				add_insmod xt_DSCP
+				config_get TOS "$rule" 'TOS'
+				suffix="-j TOS --set-tos "${TOS:-"Normal-Service"}
+			;;
+			1:DSCP)
+				add_insmod xt_DSCP
+				config_get DSCP "$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" "$suffix"
+	case "$ports:$proto" in
+		1:)	parse_matching_rule "$var" "$section" "$options" "$prefix" "$suffix" "udp";;
+	esac
+}
+
+config_cb() {
+	option_cb() {
+		return 0
+	}
+
+	# Section start
+	case "$1" in
+		interface)
+			config_set "$2" "classgroup" "Default"
+			config_set "$2" "upload" "128"
+		;;
+		classify|default|reclassify)
+			option_cb() {
+				append options "$1"
+			}
+		;;
+	esac
+
+    # Section end
+	config_get TYPE "$CONFIG_SECTION" TYPE
+	case "$TYPE" in
+		interface)
+			config_get_bool enabled "$CONFIG_SECTION" enabled 1
+			[ 1 -eq "$enabled" ] || return 0
+			config_get classgroup "$CONFIG_SECTION" classgroup
+			config_set "$CONFIG_SECTION" ifbdev "$C"
+			C=$(($C+1))
+			append INTERFACES "$CONFIG_SECTION"
+			config_set "$classgroup" enabled 1
+			config_get device "$CONFIG_SECTION" device
+			[ -z "$device" ] && {
+				device="$(find_ifname ${CONFIG_SECTION})"
+				config_set "$CONFIG_SECTION" device "${device:-eth0}"
+			}
+		;;
+		classgroup) append CG "$CONFIG_SECTION";;
+		classify|default|reclassify)
+			case "$TYPE" in
+				classify) var="ctrules";;
+				*) var="rules";;
+			esac
+			config_get target "$CONFIG_SECTION" target
+			config_set "$CONFIG_SECTION" options "$options"
+			append "$var" "$CONFIG_SECTION"
+			unset options
+		;;
+	esac
+}
+
+
+enum_classes() {
+	local c="0"
+	config_get classes "$1" classes
+	config_get default "$1" default
+	for class in $classes; do
+		c="$(($c + 1))"
+		config_set "${class}" classnr $c
+		case "$class" in
+			$default) class_default=$c;;
+		esac
+	done
+	class_default="${class_default:-$c}"
+}
+
+cls_var() {
+	local varname="$1"
+	local class="$2"
+	local name="$3"
+	local type="$4"
+	local default="$5"
+	local tmp tmp1 tmp2
+	config_get tmp1 "$class" "$name"
+	config_get tmp2 "${class}_${type}" "$name"
+	tmp="${tmp2:-$tmp1}"
+	tmp="${tmp:-$tmp2}"
+	export ${varname}="${tmp:-$default}"
+}
+
+tcrules() {
+	_dir=/usr/lib/qos
+	[ -e $_dir/tcrules.awk ] || _dir=.
+	echo "$cstr" | awk \
+		-v device="$dev" \
+		-v linespeed="$rate" \
+		-v direction="$dir" \
+		-f $_dir/tcrules.awk
+}
+
+start_interface() {
+	local iface="$1"
+	local num_ifb="$2"
+	config_get device "$iface" device
+	config_get_bool enabled "$iface" enabled 1
+	[ -z "$device" -o 1 -ne "$enabled" ] && {
+		return 1 
+	}
+	config_get upload "$iface" upload
+	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 ${halfduplex:-up} ${download:+down}; do
+		case "$dir" in
+			up)
+				[ "$overhead" = 1 ] && upload=$(($upload * 98 / 100 - (15 * 128 / $upload)))
+				dev="$device"
+				rate="$upload"
+				dl_mode=""
+				prefix="cls"
+			;;
+			down)
+				[ "$(ls -d /proc/sys/net/ipv4/conf/ifb* 2>&- | wc -l)" -ne "$num_ifb" ] && add_insmod ifb numifbs="$num_ifb"
+				config_get ifbdev "$iface" ifbdev
+				[ "$overhead" = 1 ] && download=$(($download * 98 / 100 - (80 * 1024 / $download)))
+				dev="ifb$ifbdev"
+				rate="$download"
+				dl_mode=1
+				prefix="d_cls"
+			;;
+			*) continue;;
+		esac
+		cstr=
+		for class in $classes; do
+			cls_var pktsize "$class" packetsize $dir 1500
+			cls_var pktdelay "$class" packetdelay $dir 0
+			cls_var maxrate "$class" limitrate $dir 100
+			cls_var prio "$class" priority $dir 1
+			cls_var avgrate "$class" avgrate $dir 0
+			cls_var qdisc "$class" qdisc $dir ""
+			cls_var filter "$class" filter $dir ""
+			config_get classnr "$class" classnr
+			append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate:$qdisc:$filter" "$N"
+		done
+		append ${prefix}q "$(tcrules)" "$N"
+		export dev_${dir}="ifconfig $dev up txqueuelen 5 >&- 2>&-
+tc qdisc del dev $dev root >&- 2>&-
+tc qdisc add dev $dev root handle 1: hfsc default ${class_default}0
+tc class add dev $dev parent 1: classid 1:1 hfsc sc rate ${rate}kbit ul rate ${rate}kbit"
+	done
+	[ -n "$download" ] && {
+		add_insmod cls_u32
+		add_insmod em_u32
+		add_insmod act_connmark
+		add_insmod act_mirred
+		add_insmod sch_ingress
+	}
+	if [ -n "$halfduplex" ]; then
+		export dev_up="tc qdisc del dev $device root >&- 2>&-
+tc qdisc add dev $device root handle 1: hfsc
+tc filter add dev $device parent 1: protocol ip prio 10 u32 match u32 0 0 flowid 1:1 action mirred egress redirect dev ifb$ifbdev"
+	elif [ -n "$download" ]; then
+		append dev_${dir} "tc qdisc del dev $device ingress >&- 2>&-
+tc qdisc add dev $device ingress
+tc filter add dev $device parent ffff: protocol ip prio 1 u32 match u32 0 0 flowid 1:1 action connmark action mirred egress redirect dev ifb$ifbdev" "$N"
+	fi
+	add_insmod cls_fw
+	add_insmod sch_hfsc
+	add_insmod sch_fq_codel
+
+	cat <<EOF
+${INSMOD:+$INSMOD$N}${dev_up:+$dev_up
+$clsq
+}${ifbdev:+$dev_down
+$d_clsq
+$d_clsl
+$d_clsf
+}
+EOF
+	unset INSMOD clsq clsf clsl d_clsq d_clsl d_clsf dev_up dev_down
+}
+
+start_interfaces() {
+	local C="$1"
+	for iface in $INTERFACES; do
+		start_interface "$iface" "$C"
+	done
+}
+
+add_rules() {
+	local var="$1"
+	local rules="$2"
+	local prefix="$3"
+	
+	for rule in $rules; do
+		unset iptrule
+		config_get target "$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 xt_DSCP
+			parse_matching_rule iptrule "$rule" "$s_options" "$prefix" "-j DSCP --set-dscp 0"
+			append "$var" "$iptrule" "$N"
+			unset iptrule
+		}
+
+		target=$(($target | ($target << 4)))
+		parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target/0xff"
+		append "$var" "$iptrule" "$N"
+	done
+}
+
+start_cg() {
+	local cg="$1"
+	local iptrules
+	local pktrules
+	local sizerules
+	enum_classes "$cg"
+	add_rules iptrules "$ctrules" "iptables -t mangle -A qos_${cg}_ct"
+	config_get classes "$cg" classes
+	for class in $classes; do
+		config_get mark "$class" classnr
+		config_get maxsize "$class" maxsize
+		[ -z "$maxsize" -o -z "$mark" ] || {
+			add_insmod xt_length
+			append pktrules "iptables -t mangle -A qos_${cg} -m mark --mark $mark/0x0f -m length --length $maxsize: -j MARK --set-mark 0/0xff" "$N"
+		}
+	done
+	add_rules pktrules "$rules" "iptables -t mangle -A qos_${cg}"
+	for iface in $INTERFACES; do
+		config_get classgroup "$iface" classgroup
+		config_get device "$iface" device
+		config_get ifbdev "$iface" ifbdev
+		config_get upload "$iface" upload
+		config_get download "$iface" download
+		config_get halfduplex "$iface" halfduplex
+		download="${download:-${halfduplex:+$upload}}"
+		append up "iptables -t mangle -A OUTPUT -o $device -j qos_${cg}" "$N"
+		append up "iptables -t mangle -A FORWARD -o $device -j qos_${cg}" "$N"
+	done
+	cat <<EOF
+$INSMOD
+iptables -t mangle -N qos_${cg} >&- 2>&-
+iptables -t mangle -N qos_${cg}_ct >&- 2>&-
+${iptrules:+${iptrules}${N}iptables -t mangle -A qos_${cg}_ct -j CONNMARK --save-mark --mask 0xff}
+iptables -t mangle -A qos_${cg} -j CONNMARK --restore-mark --mask 0x0f
+iptables -t mangle -A qos_${cg} -m mark --mark 0/0x0f -j qos_${cg}_ct
+$pktrules
+${iptrules:+${iptrules}${N}iptables -t mangle -A qos_${cg} -j CONNMARK --save-mark --mask 0xf0}
+$up$N${down:+${down}$N}
+EOF
+	unset INSMOD
+}
+
+start_firewall() {
+	add_insmod xt_multiport
+	add_insmod xt_CONNMARK
+	stop_firewall
+	for group in $CG; do
+		start_cg $group
+	done
+}
+
+stop_firewall() {
+	# Builds up a list of iptables commands to flush the qos_* chains,
+	# remove rules referring to them, then delete them
+
+	# Print rules in the mangle table, like iptables-save
+	iptables -t mangle -S |
+		# Find rules for the qos_* chains
+		grep '^-N qos_\|-j qos_' |
+		# Exclude rules in qos_* chains (inter-qos_* refs)
+		grep -v '^-A qos_' |
+		# Replace -N with -X and hold, with -F and print
+		# Replace -A with -D
+		# Print held lines at the end (note leading newline)
+		sed -e '/^-N/{s/^-N/-X/;H;s/^-X/-F/}' \
+			-e 's/^-A/-D/' \
+			-e '${p;g}' |
+		# Make into proper iptables calls
+		# Note:  awkward in previous call due to hold space usage
+		sed -n -e 's/^./iptables -t mangle &/p'
+}
+
+C="0"
+INTERFACES=""
+[ -e ./qos.conf ] && {
+	. ./qos.conf
+	config_cb
+} || config_load qos
+
+C="0"
+for iface in $INTERFACES; do
+	export C="$(($C + 1))"
+done
+
+case "$1" in
+	all)
+		start_interfaces "$C"
+		start_firewall
+	;;
+	interface)
+		start_interface "$2" "$C"
+	;;
+	interfaces)
+		start_interfaces
+	;;
+	firewall)
+		case "$2" in
+			stop)
+				stop_firewall
+			;;
+			start|"")
+				start_firewall
+			;;
+		esac
+	;;
+esac
-- 
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