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- ################################################################################
- # simplest.qos (Cero3 Simple Shaper)
- #
- # Abstract:
- # This is a single band fq_codel and ipv6 enabled shaping script for Ethernet
- # gateways. This is nearly the simplest possible. With FQ_CODEL, the sparseness
- # priority will work pretty well for a casual network. Flow-hashes should not
- # overlap much with only a few users.
- #
- # References:
- # This alternate shaper attempts to go for 1/u performance in a clever way
- # http://git.coverfire.com/?p=linux-qos-scripts.git;a=blob;f=src-3tos.sh;hb=HEAD
- #
- ################################################################################
- #
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License version 2 as
- # published by the Free Software Foundation.
- #
- # Copyright (C) 2012-2016
- # Michael D. Taht, Toke Høiland-Jørgensen, Sebastian Moeller
- #
- ################################################################################
- . ${SQM_LIB_DIR}/defaults.sh
- ################################################################################
- cake_egress()
- {
- $TC qdisc add dev $IFACE root `get_stab_string` cake bandwidth ${UPLINK}kbit besteffort `get_cake_lla_string` ${EQDISC_OPTS}
- }
- egress() {
- LQ="quantum `get_htb_quantum $IFACE ${UPLINK} ${ESHAPER_QUANTUM_DUR_US}`"
- BURST="`get_htb_burst $IFACE ${UPLINK} ${ESHAPER_BURST_DUR_US}`"
- SILENT=1 $TC qdisc del dev $IFACE root
- case $QDISC in
- cake*) cake_egress; return ;;
- esac
- $TC qdisc add dev $IFACE root handle 1: `get_stab_string` htb default 10
- $TC class add dev $IFACE parent 1: classid 1:1 htb $LQ rate ${UPLINK}kbit ceil ${UPLINK}kbit $BURST `get_htb_adsll_string`
- $TC class add dev $IFACE parent 1:1 classid 1:10 htb $LQ rate ${UPLINK}kbit ceil ${UPLINK}kbit $BURST prio 0 `get_htb_adsll_string`
- $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}
- }
- cake_ingress()
- {
- $TC qdisc add dev $DEV root `get_stab_string` cake bandwidth ${DOWNLINK}kbit besteffort `get_cake_lla_string` ${IQDISC_OPTS}
- $IP link set dev $DEV up
- # redirect all IP packets arriving in $IFACE to $DEV
- $TC filter add dev $IFACE parent ffff: protocol all prio 10 u32 \
- match u32 0 0 flowid 1:1 action mirred egress redirect dev $DEV
- }
- ingress() {
- sqm_debug "ingress"
- SILENT=1 $TC qdisc del dev $IFACE handle ffff: ingress
- $TC qdisc add dev $IFACE handle ffff: ingress
- LQ="quantum `get_htb_quantum $IFACE ${DOWNLINK} ${ISHAPER_QUANTUM_DUR_US}`"
- BURST="`get_htb_burst $IFACE ${DOWNLINK} ${ISHAPER_BURST_DUR_US}`"
- SILENT=1 $TC qdisc del dev $DEV root
- case $QDISC in
- cake*) cake_ingress; return ;;
- esac
- $TC qdisc add dev $DEV root handle 1: `get_stab_string` htb default 10
- $TC class add dev $DEV parent 1: classid 1:1 htb $LQ rate ${DOWNLINK}kbit ceil ${DOWNLINK}kbit $BURST `get_htb_adsll_string`
- $TC class add dev $DEV parent 1:1 classid 1:10 htb $LQ rate ${DOWNLINK}kbit ceil ${DOWNLINK}kbit $BURST prio 0 `get_htb_adsll_string`
- # FIXME: I'd prefer to use a pre-nat filter but we need to detect if nat is on this interface
- # AND we need to permute by a random number which we can't do from userspace filters
- # Most high rate flows are REALLY close. This stomps on those harder, but hurts on high rate long distance
- #$TC qdisc add dev $DEV parent 1:10 handle 110: $QDISC limit $LIMIT $ECN interval 20ms target 3ms `get_flows ${DOWNLINK}`
- $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}
- $IP link set dev $DEV up
- # redirect all IP packets arriving in $IFACE to ifb0
- $TC filter add dev $IFACE parent ffff: protocol all prio 10 u32 \
- match u32 0 0 flowid 1:1 action mirred egress redirect dev $DEV
- }
- sqm_prepare_script() {
- do_modules
- verify_qdisc "htb" || return 1
- }
- ################################################################################
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