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Preliminary support for opening data-transfer interfaces

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This commit is contained in:
Michael Brown
2007-04-28 20:56:24 +00:00
parent 27b3bd10c9
commit ff1222a8d3
4 changed files with 325 additions and 18 deletions
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42
src/include/gpxe/xfer.h
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@@ -8,6 +8,7 @@
*/
#include <stddef.h>
#include <stdarg.h>
#include <gpxe/interface.h>
#include <gpxe/iobuf.h>
@@ -15,10 +16,38 @@ struct xfer_interface;
/** Data transfer interface operations */
struct xfer_interface_operations {
/* Missing features:
*
* notification of non-close status - e.g. connected/opened, ...
*
* seek
*
* prompt for data delivery
*
* I/O buffer preparation
*
*/
/** Close interface
*
* @v xfer Data-transfer interface
* @v rc Reason for close
*/
void ( * close ) ( struct xfer_interface *xfer, int rc );
/** Redirect to new location
*
* @v xfer Data-transfer interface
* @v type New location type
* @v args Remaining arguments depend upon location type
* @ret rc Return status code
*/
int ( * vredirect ) ( struct xfer_interface *xfer, int type,
va_list args );
/** Deliver datagram
*
* @v xfer Data-transfer interface
* @v src Source interface
* @v iobuf Datagram I/O buffer
* @ret rc Return status code
*
@@ -27,12 +56,10 @@ struct xfer_interface_operations {
* deliver_as_raw().
*/
int ( * deliver ) ( struct xfer_interface *xfer,
struct xfer_interface *src,
struct io_buffer *iobuf );
/** Deliver datagram as raw data
*
* @v xfer Data-transfer interface
* @v src Source interface
* @v data Data buffer
* @v len Length of data buffer
* @ret rc Return status code
@@ -42,7 +69,6 @@ struct xfer_interface_operations {
* deliver_as_iobuf().
*/
int ( * deliver_raw ) ( struct xfer_interface *xfer,
struct xfer_interface *src,
const void *data, size_t len );
};
@@ -57,11 +83,15 @@ struct xfer_interface {
extern struct xfer_interface null_xfer;
extern struct xfer_interface_operations null_xfer_ops;
extern int vredirect ( struct xfer_interface *xfer, int type, va_list args );
extern int redirect ( struct xfer_interface *xfer, int type, ... );
extern int deliver ( struct xfer_interface *xfer, struct io_buffer *iobuf );
extern int deliver_raw ( struct xfer_interface *xfer,
const void *data, size_t len );
extern int deliver_as_raw ( struct xfer_interface *xfer,
struct xfer_interface *src,
struct io_buffer *iobuf );
extern int deliver_as_iobuf ( struct xfer_interface *xfer,
struct xfer_interface *src,
const void *data, size_t len );
/**