889 struct ib_wc {  struct
894 	enum ib_wc_status	status;  argument
895 	enum ib_wc_opcode	opcode;  argument
896 	u32			vendor_err;
897 	u32			byte_len;
898 	struct ib_qp	       *qp;
899 	union {
902 	} ex;
903 	u32			src_qp;
904 	int			wc_flags;
905 	u16			pkey_index;
906 	u16			slid;
907 	u8			sl;
908 	u8			dlid_path_bits;
909 	u8			port_num;	/* valid only for DR SMPs on switches */
910 	u8			smac[ETH_ALEN];
911 	u16			vlan_id;
912 	u8			network_hdr_type;