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133 lines
5.1 KiB
133 lines
5.1 KiB
#!/bin/sh
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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) 2012-4 Michael D. Taht, Toke Høiland-Jørgensen, Sebastian Moeller
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. /lib/functions.sh
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STOP=
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ACTIVE_STATE_PREFIX="SQM_active_on_"
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ACTIVE_STATE_FILE_DIR="/var/run/SQM"
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mkdir -p ${ACTIVE_STATE_FILE_DIR}
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START_ON_IF=$2 # only process this interface
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# TODO if $2 is empty select all interfaces with running sqm instance
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if [ -z ${START_ON_IF} ] ;
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then
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# find all interfaces with active sqm instance
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logger -t SQM -s "Trying to start/stop SQM on all interfaces."
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PROTO_STATE_FILE_LIST=$( ls ${ACTIVE_STATE_FILE_DIR}/${ACTIVE_STATE_PREFIX}* 2> /dev/null )
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else
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# only try to restart the just hotplugged interface, so reduce the list of interfaces to stop to the specified one
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logger -t SQM -s "Trying to start/stop SQM on interface ${START_ON_IF}"
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PROTO_STATE_FILE_LIST=${ACTIVE_STATE_FILE_DIR}/${ACTIVE_STATE_PREFIX}${START_ON_IF}
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fi
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case ${1} in
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start)
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# just run through, same as passing no argument
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;;
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stop)
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logger -t SQM -s "run.sh stop"
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STOP=$1
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;;
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esac
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# the current uci config file does not necessarily contain sections for all interfaces with active
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# SQM instances, so use the ACTIVE_STATE_FILES to detect the interfaces on which to stop SQM.
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# Currently the .qos scripts start with stopping any existing traffic shaping so this should not
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# effectively change anything...
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for STATE_FILE in ${PROTO_STATE_FILE_LIST} ; do
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if [ -f ${STATE_FILE} ] ;
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then
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STATE_FILE_BASE_NAME=$( basename ${STATE_FILE} )
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CURRENT_INTERFACE=${STATE_FILE_BASE_NAME:${#ACTIVE_STATE_PREFIX}:$(( ${#STATE_FILE_BASE_NAME} - ${#ACTIVE_STATE_PREFIX} ))}
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logger -t SQM -s "${0} Stopping SQM on interface: ${CURRENT_INTERFACE}"
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/usr/lib/sqm/stop.sh ${CURRENT_INTERFACE}
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rm ${STATE_FILE} # well, we stop it so it is not running anymore and hence no active state file needed...
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fi
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done
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config_load sqm
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run_simple_qos() {
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local section="$1"
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export IFACE=$(config_get "$section" interface)
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# If called explicitly for one interface only , so ignore anything else
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[ -n "${START_ON_IF}" -a "$START_ON_IF" != "$IFACE" ] && return
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#logger -t SQM -s "marching on..."
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ACTIVE_STATE_FILE_FQN="${ACTIVE_STATE_FILE_DIR}/${ACTIVE_STATE_PREFIX}${IFACE}" # this marks interfaces as active with SQM
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[ -f "${ACTIVE_STATE_FILE_FQN}" ] && logger -t SQM -s "Uh, oh, ${ACTIVE_STATE_FILE_FQN} should already be stopped." # Not supposed to happen
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if [ $(config_get "$section" enabled) -ne 1 ];
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then
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if [ -f "${ACTIVE_STATE_FILE_FQN}" ];
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then
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# this should not be possible, delete after testing
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local SECTION_STOP="stop" # it seems the user just de-selected enable, so stop the active SQM
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else
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logger -t SQM -s "${0} SQM for interface ${IFACE} is not enabled, skipping over..."
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return 0 # since SQM is not active on the current interface nothing to do here
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fi
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fi
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export UPLINK=$(config_get "$section" upload)
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export DOWNLINK=$(config_get "$section" download)
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export LLAM=$(config_get "$section" linklayer_adaptation_mechanism)
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export LINKLAYER=$(config_get "$section" linklayer)
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export OVERHEAD=$(config_get "$section" overhead)
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export STAB_MTU=$(config_get "$section" tcMTU)
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export STAB_TSIZE=$(config_get "$section" tcTSIZE)
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export STAB_MPU=$(config_get "$section" tcMPU)
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export ILIMIT=$(config_get "$section" ilimit)
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export ELIMIT=$(config_get "$section" elimit)
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export ITARGET=$(config_get "$section" itarget)
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export ETARGET=$(config_get "$section" etarget)
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export IECN=$(config_get "$section" ingress_ecn)
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export EECN=$(config_get "$section" egress_ecn)
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export IQDISC_OPTS=$(config_get "$section" iqdisc_opts)
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export EQDISC_OPTS=$(config_get "$section" eqdisc_opts)
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export TARGET=$(config_get "$section" target)
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export SQUASH_DSCP=$(config_get "$section" squash_dscp)
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export SQUASH_INGRESS=$(config_get "$section" squash_ingress)
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export QDISC=$(config_get "$section" qdisc)
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export SCRIPT=/usr/lib/sqm/$(config_get "$section" script)
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# # there should be nothing left to stop, so just avoid calling the script
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if [ "$STOP" == "stop" -o "$SECTION_STOP" == "stop" ];
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then
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# /usr/lib/sqm/stop.sh
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# [ -f ${ACTIVE_STATE_FILE_FQN} ] && rm ${ACTIVE_STATE_FILE_FQN} # conditional to avoid errors ACTIVE_STATE_FILE_FQN does not exist anymore
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# $(config_set "$section" enabled 0) # this does not save to the config file only to the loaded memory representation
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logger -t SQM -s "${0} SQM qdiscs on ${IFACE} removed"
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return 0
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fi
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# in case of spurious hotplug events, try double check whether the interface is really up
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if [ ! -d /sys/class/net/${IFACE} ] ;
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then
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echo "${IFACE} does currently not exist, not even trying to start SQM on nothing." > /dev/kmsg
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logger -t SQM -s "${IFACE} does currently not exist, not even trying to start SQM on nothing."
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return 0
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fi
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logger -t SQM -s "${0} Queue Setup Script: ${SCRIPT}"
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[ -x "$SCRIPT" ] && { $SCRIPT ; touch ${ACTIVE_STATE_FILE_FQN}; }
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}
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config_foreach run_simple_qos
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