gpxe: delete long since obsolete snapshot of gPXE

gPXE has been deprecated in favor of iPXE for many, many years now.
It is much better than users get it directly from the iPXE project,
since we should no longer need any special modifications for Syslinux
use.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

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 );