760 struct ib_wc {  struct
762 	enum ib_wc_status	status;  argument
763 	enum ib_wc_opcode	opcode;  argument
764 	u32			vendor_err;
765 	u32			byte_len;
766 	struct ib_qp	       *qp;
767 	union {
770 	} ex;
771 	u32			src_qp;
772 	int			wc_flags;
773 	u16			pkey_index;
774 	u16			slid;
775 	u8			sl;
776 	u8			dlid_path_bits;
777 	u8			port_num;	/* valid only for DR SMPs on switches */
778 	u8			smac[ETH_ALEN];
779 	u16			vlan_id;