1 files changed, 107 insertions, 0 deletions
diff --git a/roms/ipxe/src/include/ipxe/xfer.h b/roms/ipxe/src/include/ipxe/xfer.h
new file mode 100644
index 00000000..1167e5cb
--- /dev/null
+++ b/roms/ipxe/src/include/ipxe/xfer.h
@@ -0,0 +1,107 @@
+#ifndef _IPXE_XFER_H
+#define _IPXE_XFER_H
+
+/** @file
+ *
+ * Data transfer interfaces
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stddef.h>
+#include <stdarg.h>
+#include <ipxe/interface.h>
+
+struct xfer_metadata;
+struct io_buffer;
+struct sockaddr;
+struct net_device;
+
+/** Data transfer metadata */
+struct xfer_metadata {
+	/** Flags
+	 *
+	 * This is the bitwise OR of zero or more @c XFER_FL_XXX
+	 * constants.
+	 */
+	unsigned int flags;
+	/** Offset of data within stream
+	 *
+	 * This is an absolute offset if the @c XFER_FL_ABS_OFFSET
+	 * flag is set, otherwise a relative offset.  (A freshly
+	 * zeroed @c xfer_metadata structure therefore represents a
+	 * relative offset of zero, i.e. no offset from the current
+	 * position.)
+	 */
+	off_t offset;
+	/** Source socket address, or NULL */
+	struct sockaddr *src;
+	/** Destination socket address, or NULL */
+	struct sockaddr *dest;
+	/** Network device, or NULL */
+	struct net_device *netdev;
+};
+
+/** Offset is absolute */
+#define XFER_FL_ABS_OFFSET 0x0001
+
+/** Sender is relinquishing use of half-duplex channel */
+#define XFER_FL_OVER 0x0002
+
+/** This is the final data transfer */
+#define XFER_FL_OUT 0x0004
+
+/** Data content represents a command or status message
+ *
+ * The flag @c XFER_FL_RESPONSE is used to distinguish between a
+ * command message and a status message.
+ */
+#define XFER_FL_CMD_STAT 0x0008
+
+/** Data content is a response */
+#define XFER_FL_RESPONSE 0x0010
+
+/* Data transfer interface operations */
+
+extern int xfer_vredirect ( struct interface *intf, int type,
+			    va_list args );
+#define xfer_vredirect_TYPE( object_type ) \
+	typeof ( int ( object_type, int type, va_list args ) )
+
+extern size_t xfer_window ( struct interface *intf );
+#define xfer_window_TYPE( object_type ) \
+	typeof ( size_t ( object_type ) )
+
+extern void xfer_window_changed ( struct interface *intf );
+#define xfer_window_changed_TYPE( object_type ) \
+	typeof ( void ( object_type ) )
+
+extern struct io_buffer * xfer_alloc_iob ( struct interface *intf,
+					   size_t len );
+#define xfer_alloc_iob_TYPE( object_type ) \
+	typeof ( struct io_buffer * ( object_type, size_t len ) )
+
+extern int xfer_deliver ( struct interface *intf,
+			  struct io_buffer *iobuf,
+			  struct xfer_metadata *meta );
+#define xfer_deliver_TYPE( object_type )			\
+	typeof ( int ( object_type, struct io_buffer *iobuf,	\
+		       struct xfer_metadata *meta ) )
+
+/* Data transfer interface helper functions */
+
+extern int xfer_redirect ( struct interface *xfer, int type, ... );
+extern int xfer_deliver_iob ( struct interface *intf,
+			      struct io_buffer *iobuf );
+extern int xfer_deliver_raw_meta ( struct interface *intf, const void *data,
+				   size_t len, struct xfer_metadata *meta );
+extern int xfer_deliver_raw ( struct interface *intf,
+			      const void *data, size_t len );
+extern int xfer_vprintf ( struct interface *intf,
+			  const char *format, va_list args );
+extern int __attribute__ (( format ( printf, 2, 3 ) ))
+xfer_printf ( struct interface *intf, const char *format, ... );
+extern int xfer_seek ( struct interface *intf, off_t offset );
+
+#endif /* _IPXE_XFER_H */