typedef union {
uint64_t u64;
struct {
+#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
uint16_t opcode;
uint16_t param1;
uint16_t param2;
uint16_t dlen;
+#else
+ uint16_t dlen;
+ uint16_t param2;
+ uint16_t param1;
+ uint16_t opcode;
+#endif
} s;
} vq_cmd_word0_t;