selftests: mlxsw: Add a test for EAPOL trap

Test that packets with a destination MAC of 01:80:C2:00:00:03 trigger
the "eapol" packet trap.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -83,6 +83,7 @@ ALL_TESTS="
 	ptp_general_test
 	flow_action_sample_test
 	flow_action_trap_test
+	eapol_test
 "
 NUM_NETIFS=4
 source $lib_dir/lib.sh
@@ -677,6 +678,27 @@ flow_action_trap_test()
 	tc qdisc del dev $rp1 clsact
 }
 
+eapol_payload_get()
+{
+	local source_mac=$1; shift
+	local p
+
+	p=$(:
+		)"01:80:C2:00:00:03:"$(       : ETH daddr
+		)"$source_mac:"$(             : ETH saddr
+		)"88:8E:"$(                   : ETH type
+		)
+	echo $p
+}
+
+eapol_test()
+{
+	local h1mac=$(mac_get $h1)
+
+	devlink_trap_stats_test "EAPOL" "eapol" $MZ $h1 -c 1 \
+		$(eapol_payload_get $h1mac) -p 100 -q
+}
+
 trap cleanup EXIT
 
 setup_prepare