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Added deliver-as-iobuf/deliver-as-raw concepts.

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This commit is contained in:
Michael Brown
2007-04-27 00:02:23 +00:00
parent 2575ddc889
commit 1c765b3988
2 changed files with 91 additions and 6 deletions
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34
src/include/gpxe/xfer.h
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@@ -18,13 +18,32 @@ struct xfer_interface_operations {
/** Deliver datagram
*
* @v xfer Data-transfer interface
* @v src Source interface
* @v src Source interface
* @v iobuf Datagram I/O buffer
* @ret rc Return status code
*
* A data transfer interface that wishes to support only raw
* data delivery should set this method to
* 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
*
* A data transfer interface that wishes to support only I/O
* buffer delivery should set this method to
* deliver_as_iobuf().
*/
int ( * deliver_raw ) ( struct xfer_interface *xfer,
struct xfer_interface *src,
const void *data, size_t len );
};
/** A data transfer interface */
@@ -38,6 +57,19 @@ struct xfer_interface {
extern struct xfer_interface null_xfer;
extern struct xfer_interface_operations null_xfer_ops;
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 );
/**
* Get destination data-transfer interface
*
* @v xfer Data-transfer interface
* @ret dest Destination interface
*/
static inline struct xfer_interface *
xfer_dest ( struct xfer_interface *xfer ) {
return container_of ( xfer->intf.dest, struct xfer_interface, intf );