#define OXM_HEADER_W(FIELD, LENGTH) \
NXM_HEADER_W(OFPXMC12_OPENFLOW_BASIC, FIELD, LENGTH)
+#define IS_OXM_HEADER(header) (NXM_VENDOR(header) == OFPXMC12_OPENFLOW_BASIC)
+
#define OXM_OF_IN_PORT OXM_HEADER (OFPXMT12_OFB_IN_PORT, 4)
#define OXM_OF_IN_PHY_PORT OXM_HEADER (OFPXMT12_OFB_IN_PHY_PORT, 4)
#define OXM_OF_METADATA OXM_HEADER (OFPXMT12_OFB_METADATA, 8)