[PATCH v8 net-next 1/3] selftests: net: Create veth pair for testing in networkless kernel

Abhinav Jain
2024-08-19T12:13:04Z

Check if the netdev list is empty and create veth pair to be used for
feature on/off testing.
Remove the veth pair after testing is complete.

Signed-off-by: Abhinav Jain <jain.abhinav177@gmail.com>
---
tools/testing/selftests/net/netdevice.sh | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/tools/testing/selftests/net/netdevice.sh b/tools/testing/selftests/net/netdevice.sh
index e3afcb424710..0c32950fdd17 100755
--- a/tools/testing/selftests/net/netdevice.sh
+++ b/tools/testing/selftests/net/netdevice.sh
@@ -129,6 +129,7 @@ kci_netdev_ethtool()

kci_netdev_ethtool_test 74 'dump' "ethtool -d $netdev"
kci_netdev_ethtool_test 94 'stats' "ethtool -S $netdev"
+
return 0
}

@@ -196,10 +197,25 @@ if [ ! -e "$TMP_LIST_NETDEV" ];then
fi

ip link show |grep '^[0-9]' | grep -oE '[[:space:]].*eth[0-9]*:|[[:space:]].*enp[0-9]s[0-9]:' | cut -d\ -f2 | cut -d: -f1> "$TMP_LIST_NETDEV"
+
+if [ ! -s "$TMP_LIST_NETDEV" ]; then
+ echo "No valid network device found, creating veth pair"
+ ip link add veth0 type veth peer name veth1
+ echo "veth0" > "$TMP_LIST_NETDEV"
+ echo "veth1" >> "$TMP_LIST_NETDEV"
+ veth_created=1
+fi
+
while read netdev
do
kci_test_netdev "$netdev"
done < "$TMP_LIST_NETDEV"

+#clean up veth interface pair if it was created
+if [ "$veth_created" ]; then
+ ip link delete veth0
+ echo "Removed veth pair"
+fi
+
rm "$TMP_LIST_NETDEV"
exit 0
--
2.34.1