1 files changed, 0 insertions, 417 deletions
diff --git a/gpxe/src/core/xfer.c b/gpxe/src/core/xfer.c
deleted file mode 100644
index 1ec6f9d3..00000000
--- a/gpxe/src/core/xfer.c
+++ /dev/null
@@ -1,417 +0,0 @@
-/*
- * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include <gpxe/xfer.h>
-
-/** @file
- *
- * Data transfer interfaces
- *
- */
-
-/**
- * Dummy transfer metadata
- *
- * This gets passed to xfer_interface::deliver_iob() and equivalents
- * when no metadata is available.
- */
-static struct xfer_metadata dummy_metadata;
-
-/**
- * Close data transfer interface
- *
- * @v xfer		Data transfer interface
- * @v rc		Reason for close
- */
-void xfer_close ( struct xfer_interface *xfer, int rc ) {
-	struct xfer_interface *dest = xfer_get_dest ( xfer );
-	struct xfer_interface_operations *op = xfer->op;
-
-	DBGC ( xfer, "XFER %p->%p close\n", xfer, dest );
-
-	xfer_unplug ( xfer );
-	xfer_nullify ( xfer );
-	dest->op->close ( dest, rc );
-	xfer->op = op;
-	xfer_put ( dest );
-}
-
-/**
- * Send redirection event
- *
- * @v xfer		Data transfer interface
- * @v type		New location type
- * @v args		Remaining arguments depend upon location type
- * @ret rc		Return status code
- */
-int xfer_vredirect ( struct xfer_interface *xfer, int type, va_list args ) {
-	struct xfer_interface *dest = xfer_get_dest ( xfer );
-	int rc;
-
-	DBGC ( xfer, "XFER %p->%p redirect\n", xfer, dest );
-
-	rc = dest->op->vredirect ( dest, type, args );
-
-	if ( rc != 0 ) {
-		DBGC ( xfer, "XFER %p<-%p redirect: %s\n", xfer, dest,
-		       strerror ( rc ) );
-	}
-	xfer_put ( dest );
-	return rc;
-}
-
-/**
- * Send redirection event
- *
- * @v xfer		Data transfer interface
- * @v type		New location type
- * @v ...		Remaining arguments depend upon location type
- * @ret rc		Return status code
- */
-int xfer_redirect ( struct xfer_interface *xfer, int type, ... ) {
-	va_list args;
-	int rc;
-
-	va_start ( args, type );
-	rc = xfer_vredirect ( xfer, type, args );
-	va_end ( args );
-	return rc;
-}
-
-/**
- * Check flow control window
- *
- * @v xfer		Data transfer interface
- * @ret len		Length of window
- */
-size_t xfer_window ( struct xfer_interface *xfer ) {
-	struct xfer_interface *dest = xfer_get_dest ( xfer );
-	size_t len;
-
-	len = dest->op->window ( dest );
-
-	xfer_put ( dest );
-	return len;
-}
-
-/**
- * Allocate I/O buffer
- *
- * @v xfer		Data transfer interface
- * @v len		I/O buffer payload length
- * @ret iobuf		I/O buffer
- */
-struct io_buffer * xfer_alloc_iob ( struct xfer_interface *xfer, size_t len ) {
-	struct xfer_interface *dest = xfer_get_dest ( xfer );
-	struct io_buffer *iobuf;
-
-	DBGC ( xfer, "XFER %p->%p alloc_iob %zd\n", xfer, dest, len );
-
-	iobuf = dest->op->alloc_iob ( dest, len );
-
-	if ( ! iobuf ) {
-		DBGC ( xfer, "XFER %p<-%p alloc_iob failed\n", xfer, dest );
-	}
-	xfer_put ( dest );
-	return iobuf;
-}
-
-/**
- * Deliver datagram as I/O buffer with metadata
- *
- * @v xfer		Data transfer interface
- * @v iobuf		Datagram I/O buffer
- * @v meta		Data transfer metadata
- * @ret rc		Return status code
- */
-int xfer_deliver_iob_meta ( struct xfer_interface *xfer,
-			    struct io_buffer *iobuf,
-			    struct xfer_metadata *meta ) {
-	struct xfer_interface *dest = xfer_get_dest ( xfer );
-	int rc;
-
-	DBGC ( xfer, "XFER %p->%p deliver_iob %zd\n", xfer, dest,
-	       iob_len ( iobuf ) );
-
-	rc = dest->op->deliver_iob ( dest, iobuf, meta );
-
-	if ( rc != 0 ) {
-		DBGC ( xfer, "XFER %p<-%p deliver_iob: %s\n", xfer, dest,
-		       strerror ( rc ) );
-	}
-	xfer_put ( dest );
-	return rc;
-}
-
-/**
- * Deliver datagram as I/O buffer with metadata
- *
- * @v xfer		Data transfer interface
- * @v iobuf		Datagram I/O buffer
- * @ret rc		Return status code
- */
-int xfer_deliver_iob ( struct xfer_interface *xfer,
-		       struct io_buffer *iobuf ) {
-	return xfer_deliver_iob_meta ( xfer, iobuf, &dummy_metadata );
-}
-
-/**
- * Deliver datagram as raw data
- *
- * @v xfer		Data transfer interface
- * @v iobuf		Datagram I/O buffer
- * @ret rc		Return status code
- */
-int xfer_deliver_raw ( struct xfer_interface *xfer,
-		       const void *data, size_t len ) {
-	struct xfer_interface *dest = xfer_get_dest ( xfer );
-	int rc;
-
-	DBGC ( xfer, "XFER %p->%p deliver_raw %p+%zd\n", xfer, dest,
-	       data, len );
-
-	rc = dest->op->deliver_raw ( dest, data, len );
-
-	if ( rc != 0 ) {
-		DBGC ( xfer, "XFER %p<-%p deliver_raw: %s\n", xfer, dest,
-		       strerror ( rc ) );
-	}
-	xfer_put ( dest );
-	return rc;
-}
-
-/**
- * Deliver formatted string
- *
- * @v xfer		Data transfer interface
- * @v format		Format string
- * @v args		Arguments corresponding to the format string
- * @ret rc		Return status code
- */
-int xfer_vprintf ( struct xfer_interface *xfer, const char *format,
-		   va_list args ) {
-	size_t len;
-	va_list args_tmp;
-
-	va_copy ( args_tmp, args );
-	len = vsnprintf ( NULL, 0, format, args );
-	{
-		char buf[len + 1];
-		vsnprintf ( buf, sizeof ( buf ), format, args_tmp );
-		va_end ( args_tmp );
-		return xfer_deliver_raw ( xfer, buf, len );
-	}
-}
-
-/**
- * Deliver formatted string
- *
- * @v xfer		Data transfer interface
- * @v format		Format string
- * @v ...		Arguments corresponding to the format string
- * @ret rc		Return status code
- */
-int xfer_printf ( struct xfer_interface *xfer, const char *format, ... ) {
-	va_list args;
-	int rc;
-
-	va_start ( args, format );
-	rc = xfer_vprintf ( xfer, format, args );
-	va_end ( args );
-	return rc;
-}
-
-/**
- * Seek to position
- *
- * @v xfer		Data transfer interface
- * @v offset		Offset to new position
- * @v whence		Basis for new position
- * @ret rc		Return status code
- */
-int xfer_seek ( struct xfer_interface *xfer, off_t offset, int whence ) {
-	struct io_buffer *iobuf;
-	struct xfer_metadata meta = {
-		.offset = offset,
-		.whence = whence,
-	};
-
-	DBGC ( xfer, "XFER %p seek %s+%ld\n", xfer,
-	       whence_text ( whence ), offset );
-
-	/* Allocate and send a zero-length data buffer */
-	iobuf = xfer_alloc_iob ( xfer, 0 );
-	if ( ! iobuf )
-		return -ENOMEM;
-	return xfer_deliver_iob_meta ( xfer, iobuf, &meta );
-}
-
-/****************************************************************************
- *
- * Helper methods
- *
- * These functions are designed to be used as methods in the
- * xfer_interface_operations table.
- *
- */
-
-/**
- * Ignore close() event
- *
- * @v xfer		Data transfer interface
- * @v rc		Reason for close
- */
-void ignore_xfer_close ( struct xfer_interface *xfer __unused,
-			 int rc __unused ) {
-	/* Nothing to do */
-}
-
-/**
- * Ignore vredirect() event
- *
- * @v xfer		Data transfer interface
- * @v type		New location type
- * @v args		Remaining arguments depend upon location type
- * @ret rc		Return status code
- */
-int ignore_xfer_vredirect ( struct xfer_interface *xfer __unused,
-			    int type __unused, va_list args __unused ) {
-	return 0;
-}
-
-/**
- * Unlimited flow control window
- *
- * @v xfer		Data transfer interface
- * @ret len		Length of window
- *
- * This handler indicates that the interface is always ready to accept
- * data.
- */
-size_t unlimited_xfer_window ( struct xfer_interface *xfer __unused ) {
-	return ~( ( size_t ) 0 );
-}
-
-/**
- * No flow control window
- *
- * @v xfer		Data transfer interface
- * @ret len		Length of window
- *
- * This handler indicates that the interface is never ready to accept
- * data.
- */
-size_t no_xfer_window ( struct xfer_interface *xfer __unused ) {
-	return 0;
-}
-
-/**
- * Allocate I/O buffer
- *
- * @v xfer		Data transfer interface
- * @v len		I/O buffer payload length
- * @ret iobuf		I/O buffer
- */
-struct io_buffer *
-default_xfer_alloc_iob ( struct xfer_interface *xfer __unused, size_t len ) {
-	return alloc_iob ( len );
-}
-
-/**
- * Deliver datagram as raw data
- *
- * @v xfer		Data transfer interface
- * @v iobuf		Datagram I/O buffer
- * @v meta		Data transfer metadata
- * @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.
- */
-int xfer_deliver_as_raw ( struct xfer_interface *xfer,
-			  struct io_buffer *iobuf,
-			  struct xfer_metadata *meta __unused ) {
-	int rc;
-
-	rc = xfer->op->deliver_raw ( xfer, iobuf->data, iob_len ( iobuf ) );
-	free_iob ( iobuf );
-	return rc;
-}
-
-/**
- * Deliver datagram as I/O buffer
- *
- * @v xfer		Data transfer 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 xfer_deliver_as_iob ( struct xfer_interface *xfer,
-			  const void *data, size_t len ) {
-	struct io_buffer *iobuf;
-
-	iobuf = xfer->op->alloc_iob ( xfer, len );
-	if ( ! iobuf )
-		return -ENOMEM;
-
-	memcpy ( iob_put ( iobuf, len ), data, len );
-	return xfer->op->deliver_iob ( xfer, iobuf, &dummy_metadata );
-}
-
-/**
- * Ignore datagram as raw data event
- *
- * @v xfer		Data transfer interface
- * @v data		Data buffer
- * @v len		Length of data buffer
- * @ret rc		Return status code
- */
-int ignore_xfer_deliver_raw ( struct xfer_interface *xfer,
-			      const void *data __unused, size_t len ) {
-	DBGC ( xfer, "XFER %p %zd bytes delivered %s\n", xfer, len,
-	       ( ( xfer == &null_xfer ) ?
-		 "before connection" : "after termination" ) );
-	return 0;
-}
-
-/** Null data transfer interface operations */
-struct xfer_interface_operations null_xfer_ops = {
-	.close		= ignore_xfer_close,
-	.vredirect	= ignore_xfer_vredirect,
-	.window		= unlimited_xfer_window,
-	.alloc_iob	= default_xfer_alloc_iob,
-	.deliver_iob	= xfer_deliver_as_raw,
-	.deliver_raw	= ignore_xfer_deliver_raw,
-};
-
-/**
- * Null data transfer interface
- *
- * This is the interface to which data transfer interfaces are
- * connected when unplugged.  It will never generate messages, and
- * will silently absorb all received messages.
- */
-struct xfer_interface null_xfer = XFER_INIT ( &null_xfer_ops );