devlink: Add DMAC filter generic packet trap

Add packet trap that can report packets that were dropped due to
destination MAC filtering.

Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

include/net/devlink.h

@@ -838,6 +838,7 @@ enum devlink_trap_generic_id {
 	DEVLINK_TRAP_GENERIC_ID_GTP_PARSING,
 	DEVLINK_TRAP_GENERIC_ID_ESP_PARSING,
 	DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_NEXTHOP,
+	DEVLINK_TRAP_GENERIC_ID_DMAC_FILTER,
 
 	/* Add new generic trap IDs above */
 	__DEVLINK_TRAP_GENERIC_ID_MAX,
@@ -1063,6 +1064,8 @@ enum devlink_trap_group_generic_id {
 	"esp_parsing"
 #define DEVLINK_TRAP_GENERIC_NAME_BLACKHOLE_NEXTHOP \
 	"blackhole_nexthop"
+#define DEVLINK_TRAP_GENERIC_NAME_DMAC_FILTER \
+	"dest_mac_filter"
 
 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \
 	"l2_drops"