2ba6a3f9ab
The cake traffic-shaper qdisc omne stop solution knows how to handle link layer adjustments for ATM and can account for per packet overhead. This commit adds cake as link layer adjustment mechanism in the GUI and passes numerically specified overhead as well as the ATM linklayer keywords on to cake. This change also passes the "advanced option strings" from the Queue Discipline tab to cake. But as before no error checking. This needs testing, as I have no working cake qdisc available so caveat emptor... Signed-off-by: Sebastian Moeller <moeller0@gmx.de>
98 lines
3.3 KiB
Bash
Executable file
98 lines
3.3 KiB
Bash
Executable file
#!/bin/sh
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# Cero3 Simple Shaper
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# A 1 bin tc_codel and ipv6 enabled shaping script for
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# ethernet gateways. This is nearly the simplest possible
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# Copyright (C) 2012-5 Michael D. Taht, Toke Høiland-Jørgensen, Sebastian Moeller
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. /usr/lib/sqm/functions.sh
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sqm_logger "Starting simplest.qos"
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egress() {
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LQ="quantum `get_mtu $IFACE ${UPLINK}`"
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$TC qdisc del dev $IFACE root 2>/dev/null
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case $QDISC in
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cake*)
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$TC qdisc add dev $IFACE root cake bandwidth ${UPLINK}kbit besteffort get_cake_lla_string ${EQDISC_OPTS}
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;;
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*)
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$TC qdisc add dev $IFACE root handle 1: `get_stab_string` htb default 10
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$TC class add dev $IFACE parent 1: classid 1:1 htb $LQ rate ${UPLINK}kbit ceil ${UPLINK}kbit `get_htb_adsll_string`
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$TC class add dev $IFACE parent 1:1 classid 1:10 htb $LQ rate ${UPLINK}kbit ceil ${UPLINK}kbit prio 0 `get_htb_adsll_string`
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$TC qdisc add dev $IFACE parent 1:10 handle 110: $QDISC `get_limit ${ELIMIT}` `get_target "${ETARGET}" ${UPLINK}` `get_ecn ${EECN}` `get_flows ${UPLINK}` ${EQDISC_OPTS}
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;;
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esac
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}
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ingress() {
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sqm_logger "ingress"
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$TC qdisc del dev $IFACE handle ffff: ingress 2>/dev/null
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$TC qdisc add dev $IFACE handle ffff: ingress
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LQ="quantum `get_mtu $IFACE ${DOWNLINK}`"
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$TC qdisc del dev $DEV root 2>/dev/null
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case $QDISC in
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cake*)
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$TC qdisc add dev $DEV root cake bandwidth ${DOWNLINK}kbit besteffort get_cake_lla_string ${IQDISC_OPTS}
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;;
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*)
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$TC qdisc add dev $DEV root handle 1: `get_stab_string` htb default 10
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$TC class add dev $DEV parent 1: classid 1:1 htb $LQ rate ${DOWNLINK}kbit ceil ${DOWNLINK}kbit `get_htb_adsll_string`
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$TC class add dev $DEV parent 1:1 classid 1:10 htb $LQ rate ${DOWNLINK}kbit ceil ${DOWNLINK}kbit prio 0 `get_htb_adsll_string`
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# FIXME: I'd prefer to use a pre-nat filter but we need to detect if nat is on this interface
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# AND we need to permute by a random number which we can't do from userspace filters
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# Most high rate flows are REALLY close. This stomps on those harder, but hurts on high rate long distance
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#$TC qdisc add dev $DEV parent 1:10 handle 110: $QDISC limit $LIMIT $ECN interval 20ms target 3ms `get_flows ${DOWNLINK}`
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$TC qdisc add dev $DEV parent 1:10 handle 110: $QDISC `get_limit ${ILIMIT}` `get_target "${ITARGET}" ${DOWNLINK}` `get_ecn ${IECN}` `get_flows ${DOWNLINK}` ${IQDISC_OPTS}
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;;
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esac
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ifconfig $DEV up
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# redirect all IP packets arriving in $IFACE to ifb0
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$TC filter add dev $IFACE parent ffff: protocol all prio 10 u32 \
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match u32 0 0 flowid 1:1 action mirred egress redirect dev $DEV
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}
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do_modules
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if [ "$UPLINK" -ne 0 ];
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then
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egress
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sqm_logger "egress shaping activated"
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else
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sqm_logger "egress shaping deactivated"
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tc qdisc del dev $IFACE root 2> /dev/null
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fi
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if [ "$DOWNLINK" -ne 0 ];
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then
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ingress
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sqm_logger "ingress shaping activated"
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else
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sqm_logger "ingress shaping deactivated"
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tc qdisc del dev $DEV root 2> /dev/null
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tc qdisc del dev $IFACE ingress 2> /dev/null
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fi
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# References:
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# This alternate shaper attempts to go for 1/u performance in a clever way
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# http://git.coverfire.com/?p=linux-qos-scripts.git;a=blob;f=src-3tos.sh;hb=HEAD
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# Comments
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# This does the right thing with ipv6 traffic.
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# Flaws
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# Many!
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