selftests: devlink_trap_tunnel_vxlan: Add test case for overlay_smac_is_mc

Test that the trap is triggered under the right conditions and that
devlink counters increase when action is trap.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan.sh
index a699eda..fd19161 100755 (executable)
--- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan.sh
@@ -36,6 +36,7 @@ lib_dir=$(dirname $0)/../../../net/forwarding
 
 ALL_TESTS="
        decap_error_test
+       overlay_smac_is_mc_test
 "
 
 NUM_NETIFS=4
@@ -267,6 +268,59 @@ decap_error_test()
        corrupted_packet_test "Decap error: No L2 header" "short_payload_get"
 }
 
+mc_smac_payload_get()
+{
+       dest_mac=$(mac_get $h1)
+       source_mac=01:02:03:04:05:06
+       p=$(:
+               )"08:"$(                      : VXLAN flags
+               )"00:00:00:"$(                : VXLAN reserved
+               )"00:03:e8:"$(                : VXLAN VNI : 1000
+               )"00:"$(                      : VXLAN reserved
+               )"$dest_mac:"$(               : ETH daddr
+               )"$source_mac:"$(             : ETH saddr
+               )"08:00:"$(                   : ETH type
+               )"45:"$(                      : IP version + IHL
+               )"00:"$(                      : IP TOS
+               )"00:14:"$(                   : IP total length
+               )"00:00:"$(                   : IP identification
+               )"20:00:"$(                   : IP flags + frag off
+               )"40:"$(                      : IP TTL
+               )"00:"$(                      : IP proto
+               )"00:00:"$(                   : IP header csum
+               )"c0:00:02:03:"$(             : IP saddr: 192.0.2.3
+               )"c0:00:02:01:"$(             : IP daddr: 192.0.2.1
+               )
+       echo $p
+}
+
+overlay_smac_is_mc_test()
+{
+       local trap_name="overlay_smac_is_mc"
+       local group_name="tunnel_drops"
+       local mz_pid
+
+       RET=0
+
+       # The matching will be checked on devlink_trap_drop_test()
+       # and the filter will be removed on devlink_trap_drop_cleanup()
+       tc filter add dev $swp1 egress protocol ip pref 1 handle 101 \
+               flower src_mac 01:02:03:04:05:06 action pass
+
+       rp1_mac=$(mac_get $rp1)
+       payload=$(mc_smac_payload_get)
+
+       ip vrf exec v$rp2 $MZ $rp2 -c 0 -d 1msec -b $rp1_mac \
+               -B 192.0.2.17 -t udp sp=12345,dp=$VXPORT,p=$payload -q &
+       mz_pid=$!
+
+       devlink_trap_drop_test $trap_name $group_name $swp1
+
+       log_test "Overlay source MAC is multicast"
+
+       devlink_trap_drop_cleanup $mz_pid $swp1 "ip"
+}
+
 trap cleanup EXIT
 
 setup_prepare