514 struct ib_wc {  struct
516 	enum ib_wc_status	status;  argument
517 	enum ib_wc_opcode	opcode;  argument
518 	u32			vendor_err;
519 	u32			byte_len;
520 	struct ib_qp	       *qp;
521 	union {
524 	} ex;
525 	u32			src_qp;
526 	int			wc_flags;
527 	u16			pkey_index;
528 	u16			slid;
529 	u8			sl;
530 	u8			dlid_path_bits;
531 	u8			port_num;	/* valid only for DR SMPs on switches */
532 	int			csum_ok;