505 lines
13 KiB
Bash
Executable File
505 lines
13 KiB
Bash
Executable File
#!/bin/sh
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[ -e /lib/functions.sh ] && . /lib/functions.sh || . ./functions.sh
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[ -x /sbin/modprobe ] && {
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insmod="modprobe"
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rmmod="$insmod -r"
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} || {
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insmod="insmod"
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rmmod="rmmod"
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}
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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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*) {
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[ "$2" ] && append INSMOD "$rmmod $1 >&- 2>&-" "$N"
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append INSMOD "$insmod $* >&- 2>&-" "$N"; export insmod_$1=1
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};;
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esac
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}
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[ -e /etc/config/network ] && {
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# only try to parse network config on openwrt
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find_ifname() {(
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reset_cb
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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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} || {
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find_ifname() {
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echo "Interface not found."
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exit 1
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}
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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 0/0x0f";;
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default) pkt=1; append "$var" "-m mark --mark 0/0xf0";;
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reclassify) pkt=1;;
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esac
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append "$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 $value"
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;;
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*:layer7)
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add_insmod ipt_layer7
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add_insmod xt_layer7
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append "$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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*:connbytes)
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value="$(echo "$value" | sed -e 's,-,:,g')"
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add_insmod xt_connbytes
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append "$var" "-m connbytes --connbytes $value --connbytes-dir both --connbytes-mode bytes"
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;;
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*:comment)
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add_insmod xt_comment
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append "$var" "-m comment --comment '$value'"
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;;
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*:tos)
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add_insmod xt_dscp
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case "$value" in
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!*) append "$var" "-m tos ! --tos $value";;
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*) append "$var" "-m tos --tos $value"
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esac
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;;
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*:dscp)
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add_insmod xt_dscp
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dscp_option="--dscp"
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[ -z "${value%%[EBCA]*}" ] && dscp_option="--dscp-class"
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case "$value" in
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!*) append "$var" "-m dscp ! $dscp_option $value";;
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*) append "$var" "-m dscp $dscp_option $value"
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esac
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;;
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*:direction)
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value="$(echo "$value" | sed -e 's,-,:,g')"
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if [ "$value" = "out" ]; then
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append "$var" "-o $device"
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elif [ "$value" = "in" ]; then
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append "$var" "-i $device"
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fi
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;;
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1:pktsize)
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value="$(echo "$value" | sed -e 's,-,:,g')"
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add_insmod xt_length
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append "$var" "-m length --length $value"
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;;
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1:limit)
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add_insmod xt_limit
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append "$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 $class/0x0f";;
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*) append "$var" "-m mark --mark $class/0x0f";;
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esac
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;;
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1:TOS)
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add_insmod xt_DSCP
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config_get TOS "$rule" 'TOS'
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suffix="-j TOS --set-tos "${TOS:-"Normal-Service"}
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;;
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1:DSCP)
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add_insmod xt_DSCP
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config_get DSCP "$rule" 'DSCP'
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[ -z "${DSCP%%[EBCA]*}" ] && set_value="--set-dscp-class $DSCP" \
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|| set_value="--set-dscp $DSCP"
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suffix="-j DSCP $set_value"
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;;
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esac
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done
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append "$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 "$2" "classgroup" "Default"
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config_set "$2" "upload" "128"
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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 "$TYPE" in
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interface)
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config_get_bool enabled "$CONFIG_SECTION" enabled 1
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[ 1 -eq "$enabled" ] || return 0
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config_get classgroup "$CONFIG_SECTION" classgroup
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config_set "$CONFIG_SECTION" ifbdev "$C"
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C=$(($C+1))
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append INTERFACES "$CONFIG_SECTION"
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config_set "$classgroup" enabled 1
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config_get device "$CONFIG_SECTION" device
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[ -z "$device" ] && {
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device="$(find_ifname ${CONFIG_SECTION})"
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config_set "$CONFIG_SECTION" device "${device:-eth0}"
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}
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;;
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classgroup) append CG "$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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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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tcrules() {
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_dir=/usr/lib/qos
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[ -e $_dir/tcrules.awk ] || _dir=.
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echo "$cstr" | awk \
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-v device="$dev" \
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-v linespeed="$rate" \
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-v direction="$dir" \
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-f $_dir/tcrules.awk
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}
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start_interface() {
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local iface="$1"
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local num_ifb="$2"
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config_get device "$iface" device
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config_get_bool enabled "$iface" enabled 1
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[ -z "$device" -o 1 -ne "$enabled" ] && {
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return 1
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}
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config_get upload "$iface" upload
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config_get_bool halfduplex "$iface" halfduplex
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config_get download "$iface" download
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config_get classgroup "$iface" classgroup
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config_get_bool overhead "$iface" overhead 0
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download="${download:-${halfduplex:+$upload}}"
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enum_classes "$classgroup"
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for dir in ${halfduplex:-up} ${download:+down}; do
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case "$dir" in
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up)
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[ "$overhead" = 1 ] && upload=$(($upload * 98 / 100 - (15 * 128 / $upload)))
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dev="$device"
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rate="$upload"
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dl_mode=""
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prefix="cls"
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;;
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down)
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[ "$(ls -d /proc/sys/net/ipv4/conf/ifb* 2>&- | wc -l)" -ne "$num_ifb" ] && add_insmod ifb numifbs="$num_ifb"
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config_get ifbdev "$iface" ifbdev
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[ "$overhead" = 1 ] && download=$(($download * 98 / 100 - (80 * 1024 / $download)))
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dev="ifb$ifbdev"
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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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cstr=
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for class in $classes; do
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cls_var pktsize "$class" packetsize $dir 1500
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cls_var pktdelay "$class" packetdelay $dir 0
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cls_var maxrate "$class" limitrate $dir 100
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cls_var prio "$class" priority $dir 1
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cls_var avgrate "$class" avgrate $dir 0
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cls_var qdisc "$class" qdisc $dir ""
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cls_var filter "$class" filter $dir ""
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config_get classnr "$class" classnr
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append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate:$qdisc:$filter" "$N"
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done
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append ${prefix}q "$(tcrules)" "$N"
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export dev_${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 ${rate}kbit"
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done
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[ -n "$download" ] && {
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add_insmod cls_u32
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add_insmod em_u32
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add_insmod act_connmark
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add_insmod act_mirred
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add_insmod sch_ingress
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}
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if [ -n "$halfduplex" ]; then
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export dev_up="tc qdisc del dev $device root >&- 2>&-
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tc qdisc add dev $device root handle 1: hfsc
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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"
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elif [ -n "$download" ]; then
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append dev_${dir} "tc qdisc del dev $device ingress >&- 2>&-
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tc qdisc add dev $device ingress
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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" "$N"
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fi
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add_insmod cls_fw
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add_insmod sch_hfsc
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add_insmod sch_fq_codel
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cat <<EOF
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${INSMOD:+$INSMOD$N}${dev_up:+$dev_up
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$clsq
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}${ifbdev:+$dev_down
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$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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## If we want to override the TOS field, let's clear the DSCP field first.
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[ ! -z "$(echo $options | grep 'TOS')" ] && {
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s_options=${options%%TOS}
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add_insmod xt_DSCP
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parse_matching_rule iptrule "$rule" "$s_options" "$prefix" "-j DSCP --set-dscp 0"
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append "$var" "$iptrule" "$N"
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unset iptrule
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}
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target=$(($target | ($target << 4)))
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parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target/0xff"
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append "$var" "$iptrule" "$N"
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done
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}
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start_cg() {
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local cg="$1"
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local iptrules
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local pktrules
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local sizerules
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enum_classes "$cg"
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add_rules iptrules "$ctrules" "iptables -t mangle -A qos_${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 "$mark" ] || {
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add_insmod xt_length
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append pktrules "iptables -t mangle -A qos_${cg} -m mark --mark $mark/0x0f -m length --length $maxsize: -j MARK --set-mark 0/0xff" "$N"
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}
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done
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add_rules pktrules "$rules" "iptables -t mangle -A qos_${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 "$iface" device
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config_get ifbdev "$iface" ifbdev
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config_get upload "$iface" upload
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config_get download "$iface" download
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config_get halfduplex "$iface" halfduplex
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download="${download:-${halfduplex:+$upload}}"
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append up "iptables -t mangle -A OUTPUT -o $device -j qos_${cg}" "$N"
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append up "iptables -t mangle -A FORWARD -o $device -j qos_${cg}" "$N"
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done
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cat <<EOF
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$INSMOD
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iptables -t mangle -N qos_${cg} >&- 2>&-
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iptables -t mangle -N qos_${cg}_ct >&- 2>&-
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${iptrules:+${iptrules}${N}iptables -t mangle -A qos_${cg}_ct -j CONNMARK --save-mark --mask 0xff}
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iptables -t mangle -A qos_${cg} -j CONNMARK --restore-mark --mask 0x0f
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iptables -t mangle -A qos_${cg} -m mark --mark 0/0x0f -j qos_${cg}_ct
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$pktrules
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${iptrules:+${iptrules}${N}iptables -t mangle -A qos_${cg} -j CONNMARK --save-mark --mask 0xf0}
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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 xt_multiport
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add_insmod xt_CONNMARK
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stop_firewall
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for group in $CG; do
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start_cg $group
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done
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}
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stop_firewall() {
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# Builds up a list of iptables commands to flush the qos_* chains,
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# remove rules referring to them, then delete them
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# Print rules in the mangle table, like iptables-save
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iptables -t mangle -S |
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# Find rules for the qos_* chains
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grep '^-N qos_\|-j qos_' |
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# Exclude rules in qos_* chains (inter-qos_* refs)
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grep -v '^-A qos_' |
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# Replace -N with -X and hold, with -F and print
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# Replace -A with -D
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# Print held lines at the end (note leading newline)
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sed -e '/^-N/{s/^-N/-X/;H;s/^-X/-F/}' \
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-e 's/^-A/-D/' \
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-e '${p;g}' |
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# Make into proper iptables calls
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# Note: awkward in previous call due to hold space usage
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sed -n -e 's/^./iptables -t mangle &/p'
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}
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C="0"
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INTERFACES=""
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[ -e ./qos.conf ] && {
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. ./qos.conf
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config_cb
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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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case "$2" in
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stop)
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stop_firewall
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;;
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start|"")
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start_firewall
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;;
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esac
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;;
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esac
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