diff options
Diffstat (limited to 'src/core/xfer.c')
-rw-r--r-- | src/core/xfer.c | 63 |
1 files changed, 58 insertions, 5 deletions
diff --git a/src/core/xfer.c b/src/core/xfer.c index d08b3b86..bf56d060 100644 --- a/src/core/xfer.c +++ b/src/core/xfer.c @@ -16,6 +16,7 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#include <string.h> #include <errno.h> #include <gpxe/xfer.h> @@ -39,23 +40,75 @@ int deliver ( struct xfer_interface *xfer, struct io_buffer *iobuf ) { } /** - * Null deliver datagram + * Deliver datagram as raw data * * @v xfer Data-transfer interface * @v src Source interface * @v iobuf Datagram I/O buffer * @ret rc Return status code + * + * This function is intended to be used as the deliver() method for + * data transfer interfaces that prefer to handle raw data. */ -static int null_deliver ( struct xfer_interface *xfer __unused, - struct xfer_interface *src __unused, - struct io_buffer *iobuf ) { +int deliver_as_raw ( struct xfer_interface *xfer, + struct xfer_interface *src, + struct io_buffer *iobuf ) { + int rc; + + rc = xfer->op->deliver_raw ( xfer, src, iobuf->data, + iob_len ( iobuf ) ); free_iob ( iobuf ); + return rc; +} + +/** + * Deliver datagram as I/O buffer + * + * @v xfer Data-transfer interface + * @v src Source interface + * @v data Data buffer + * @v len Length of data buffer + * @ret rc Return status code + * + * This function is intended to be used as the deliver_raw() method + * for data transfer interfaces that prefer to handle I/O buffers. + */ +int deliver_as_iobuf ( struct xfer_interface *xfer, + struct xfer_interface *src, + const void *data, size_t len ) { + struct io_buffer *iobuf; + +#warning "Do we need interface-specific I/O buffer allocation?" + iobuf = alloc_iob ( len ); + if ( ! iobuf ) + return -ENOMEM; + + memcpy ( iob_put ( iobuf, len ), data, len ); + return xfer->op->deliver ( xfer, src, iobuf ); +} + +/** + * Null 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 + */ +static int null_deliver_raw ( struct xfer_interface *xfer, + struct xfer_interface *src, + const void *data __unused, size_t len ) { + DBGC ( src, "XFER %p->%p %zd bytes delivered %s\n", src, xfer, len, + ( ( xfer == &null_xfer ) ? + "before connection" : "after termination" ) ); return -EPIPE; } /** Null data transfer interface operations */ struct xfer_interface_operations null_xfer_ops = { - .deliver = null_deliver, + .deliver = deliver_as_raw, + .deliver_raw = null_deliver_raw, }; /** |