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selftests: forwarding: Add suppport to create veth interfaces

PATCH Applied David Ahern 3 participants 3 messages Mar 5, 2018

Subsystems (4)
Networking Network drivers Kselftest IPv4/IPv6
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David Ahern

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PATCH v2 1/1 selftests: forwarding: Add suppport to create veth interfaces

For tests using veth interfaces, the test infrastructure can create the netdevs if they do not exist. Arguably this is a preferred approach since the tests require p$N and p$(N+1) to be pairs.

Signed-off-by David Ahern <[email protected]>

---
v2
- local on j declaration and line wrap

 .../net/forwarding/forwarding.config.sample        |  5 ++++
 tools/testing/selftests/net/forwarding/lib.sh      | 35 ++++++++++++++++++++++
 2 files changed, 40 insertions(+)
tools/testing/selftests/net/forwarding/forwarding.config.sample +5 -0
index ab235c124f20..df54c9eb5100 100644
@@ -14,6 +14,11 @@ NETIFS[p6]=veth5
 NETIFS[p7]=veth6
 NETIFS[p8]=veth7
 
+NETIF_TYPE=veth
+
+# only virtual interfaces (veth) can be created by test infra
+#NETIF_CREATE=yes
+
 ##############################################################################
 # Defines
tools/testing/selftests/net/forwarding/lib.sh +35 -0
index d0af52109360..273511ef2b43 100644
@@ -76,6 +76,41 @@ done
 ##############################################################################
 # Network interfaces configuration
 
+create_netif_veth()
+{
+	local i
+
+	for i in $(eval echo {1..$NUM_NETIFS}); do
+		local j=$((i+1))
+
+		ip link show dev ${NETIFS[p$i]} &> /dev/null
+		if [[ $? -ne 0 ]]; then
+			ip link add ${NETIFS[p$i]} type veth \
+				peer name ${NETIFS[p$j]}
+			if [[ $? -ne 0 ]]; then
+				echo "Failed to create netif"
+				exit 1
+			fi
+		fi
+		i=$j
+	done
+}
+
+create_netif()
+{
+	case "$NETIF_TYPE" in
+	veth) create_netif_veth
+	      ;;
+	*) echo "Can not create interfaces of type \'$NETIF_TYPE\'"
+	   exit 1
+	   ;;
+	esac
+}
+
+if [[ "$NETIF_CREATE" = "yes" ]]; then
+	create_netif
+fi
+
 for i in $(eval echo {1..$NUM_NETIFS}); do
 	ip link show dev ${NETIFS[p$i]} &> /dev/null
 	if [[ $? -ne 0 ]]; then
Signature · 1 line
2.11.0