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Message-Id: <1505651798-106642-2-git-send-email-robert.hu@linux.intel.com>
Date: Sun, 17 Sep 2017 20:36:37 +0800
From: Robert Hoo <robert.hu@...ux.intel.com>
To: brouer@...hat.com, davem@...emloft.net, tariqt@...lanox.com,
kyle.leet@...il.com
Cc: netdev@...r.kernel.org, robert.hu@...el.com
Subject: [pktgen script v2 1/2] Add some helper functions
From: Robert Hoo <robert.hu@...el.com>
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@...el.com>
---
pktgen/functions.sh | 44 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/pktgen/functions.sh b/pktgen/functions.sh
index 205e4cd..09dfe7a 100644
--- a/pktgen/functions.sh
+++ b/pktgen/functions.sh
@@ -119,3 +119,47 @@ function root_check_run_with_sudo() {
err 4 "cannot perform sudo run of $0"
fi
}
+
+# Exact input device's NUMA node info
+function get_iface_node()
+{
+ local node=$(</sys/class/net/$1/device/numa_node)
+ if [[ $node == -1 ]]; then
+ echo 0
+ else
+ echo $node
+ fi
+}
+
+# Given an Dev/iface, get its queues' irq numbers
+function get_iface_irqs()
+{
+ local IFACE=$1
+ local queues="${IFACE}-.*TxRx"
+
+ irqs=$(grep "$queues" /proc/interrupts | cut -f1 -d:)
+ [ -z "$irqs" ] && irqs=$(grep $IFACE /proc/interrupts | cut -f1 -d:)
+ [ -z "$irqs" ] && irqs=$(for i in `ls -Ux /sys/class/net/$IFACE/device/msi_irqs` ;\
+ do grep "$i:.*TxRx" /proc/interrupts | grep -v fdir | cut -f 1 -d : ;\
+ done)
+ [ -z "$irqs" ] && err 3 "Could not find interrupts for $IFACE"
+
+ echo $irqs
+}
+
+# Given a NUMA node, return cpu ids belonging to it.
+function get_node_cpus()
+{
+ local node=$1
+ local node_cpu_list
+ local node_cpu_range_list=`cut -f1- -d, --output-delimiter=" " \
+ /sys/devices/system/node/node$node/cpulist`
+
+ for cpu_range in $node_cpu_range_list
+ do
+ node_cpu_list="$node_cpu_list "`seq -s " " ${cpu_range//-/ }`
+ done
+
+ echo $node_cpu_list
+}
+
--
1.8.3.1
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