selftests: mlxsw: vxlan_fdb_veto: Make the test more flexible for future use

vxlan_fdb_veto.sh cases are dedicated to test VxLAN with IPv4 underlay.
The main changes to test IPv6 underlay are IP addresses and some flags.

Add variables to define all the values which supposed to be different
for IPv6 testing, set them to use the existing values by default.

The next patch will define the new added variables in a separated file,
so the same tests can be used for IPv6 also.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/drivers/net/mlxsw/vxlan_fdb_veto.sh

@@ -4,6 +4,21 @@
 # Test vetoing of FDB entries that mlxsw can not offload. This exercises several
 # different veto vectors to test various rollback scenarios in the vxlan driver.
 
+: ${LOCAL_IP:=198.51.100.1}
+export LOCAL_IP
+
+: ${REMOTE_IP_1:=198.51.100.2}
+export REMOTE_IP_1
+
+: ${REMOTE_IP_2:=198.51.100.3}
+export REMOTE_IP_2
+
+: ${UDPCSUM_FLAFS:=noudpcsum}
+export UDPCSUM_FLAFS
+
+: ${MC_IP:=224.0.0.1}
+export MC_IP
+
 lib_dir=$(dirname $0)/../../../net/forwarding
 
 ALL_TESTS="
@@ -26,8 +41,8 @@ setup_prepare()
 	ip link set dev $swp1 master br0
 	ip link set dev $swp2 up
 
-	ip link add name vxlan0 up type vxlan id 10 nolearning noudpcsum \
-		ttl 20 tos inherit local 198.51.100.1 dstport 4789
+	ip link add name vxlan0 up type vxlan id 10 nolearning $UDPCSUM_FLAFS \
+		ttl 20 tos inherit local $LOCAL_IP dstport 4789
 	ip link set dev vxlan0 master br0
 }
 
@@ -50,11 +65,11 @@ fdb_create_veto_test()
 	RET=0
 
 	bridge fdb add 01:02:03:04:05:06 dev vxlan0 self static \
-	       dst 198.51.100.2 2>/dev/null
+	       dst $REMOTE_IP_1 2>/dev/null
 	check_fail $? "multicast MAC not rejected"
 
 	bridge fdb add 01:02:03:04:05:06 dev vxlan0 self static \
-	       dst 198.51.100.2 2>&1 >/dev/null | grep -q mlxsw_spectrum
+	       dst $REMOTE_IP_1 2>&1 >/dev/null | grep -q mlxsw_spectrum
 	check_err $? "multicast MAC rejected without extack"
 
 	log_test "vxlan FDB veto - create"
@@ -65,15 +80,15 @@ fdb_replace_veto_test()
 	RET=0
 
 	bridge fdb add 00:01:02:03:04:05 dev vxlan0 self static \
-	       dst 198.51.100.2
+	       dst $REMOTE_IP_1
 	check_err $? "valid FDB rejected"
 
 	bridge fdb replace 00:01:02:03:04:05 dev vxlan0 self static \
-	       dst 198.51.100.2 port 1234 2>/dev/null
+	       dst $REMOTE_IP_1 port 1234 2>/dev/null
 	check_fail $? "FDB with an explicit port not rejected"
 
 	bridge fdb replace 00:01:02:03:04:05 dev vxlan0 self static \
-	       dst 198.51.100.2 port 1234 2>&1 >/dev/null \
+	       dst $REMOTE_IP_1 port 1234 2>&1 >/dev/null \
 	    | grep -q mlxsw_spectrum
 	check_err $? "FDB with an explicit port rejected without extack"
 
@@ -85,15 +100,15 @@ fdb_append_veto_test()
 	RET=0
 
 	bridge fdb add 00:00:00:00:00:00 dev vxlan0 self static \
-	       dst 198.51.100.2
+	       dst $REMOTE_IP_1
 	check_err $? "valid FDB rejected"
 
 	bridge fdb append 00:00:00:00:00:00 dev vxlan0 self static \
-	       dst 198.51.100.3 port 1234 2>/dev/null
+	       dst $REMOTE_IP_2 port 1234 2>/dev/null
 	check_fail $? "FDB with an explicit port not rejected"
 
 	bridge fdb append 00:00:00:00:00:00 dev vxlan0 self static \
-	       dst 198.51.100.3 port 1234 2>&1 >/dev/null \
+	       dst $REMOTE_IP_2 port 1234 2>&1 >/dev/null \
 	    | grep -q mlxsw_spectrum
 	check_err $? "FDB with an explicit port rejected without extack"
 
@@ -105,11 +120,11 @@ fdb_changelink_veto_test()
 	RET=0
 
 	ip link set dev vxlan0 type vxlan \
-	   group 224.0.0.1 dev lo 2>/dev/null
+	   group $MC_IP dev lo 2>/dev/null
 	check_fail $? "FDB with a multicast IP not rejected"
 
 	ip link set dev vxlan0 type vxlan \
-	   group 224.0.0.1 dev lo 2>&1 >/dev/null \
+	   group $MC_IP dev lo 2>&1 >/dev/null \
 	    | grep -q mlxsw_spectrum
 	check_err $? "FDB with a multicast IP rejected without extack"