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samples/pktgen: Add some helper functions
1. given a device, get its NUMA belongings 2. given a device, get its queues' irq numbers. 3. given a NUMA node, get its cpu id list. Signed-off-by: Robert Hoo <robert.hu@intel.com> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -119,3 +119,46 @@ function root_check_run_with_sudo() {
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err 4 "cannot perform sudo run of $0"
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err 4 "cannot perform sudo run of $0"
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fi
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fi
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}
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}
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# Exact input device's NUMA node info
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function get_iface_node()
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{
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local node=$(</sys/class/net/$1/device/numa_node)
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if [[ $node == -1 ]]; then
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echo 0
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else
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echo $node
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fi
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}
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# Given an Dev/iface, get its queues' irq numbers
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function get_iface_irqs()
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{
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local IFACE=$1
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local queues="${IFACE}-.*TxRx"
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irqs=$(grep "$queues" /proc/interrupts | cut -f1 -d:)
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[ -z "$irqs" ] && irqs=$(grep $IFACE /proc/interrupts | cut -f1 -d:)
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[ -z "$irqs" ] && irqs=$(for i in `ls -Ux /sys/class/net/$IFACE/device/msi_irqs` ;\
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do grep "$i:.*TxRx" /proc/interrupts | grep -v fdir | cut -f 1 -d : ;\
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done)
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[ -z "$irqs" ] && err 3 "Could not find interrupts for $IFACE"
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echo $irqs
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}
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# Given a NUMA node, return cpu ids belonging to it.
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function get_node_cpus()
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{
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local node=$1
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local node_cpu_list
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local node_cpu_range_list=`cut -f1- -d, --output-delimiter=" " \
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/sys/devices/system/node/node$node/cpulist`
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for cpu_range in $node_cpu_range_list
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do
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node_cpu_list="$node_cpu_list "`seq -s " " ${cpu_range//-/ }`
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done
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echo $node_cpu_list
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}
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