1 files changed, 0 insertions, 463 deletions

diff --git a/gpxe/src/net/udp.c b/gpxe/src/net/udp.c
deleted file mode 100644
index 771655e0..00000000
--- a/gpxe/src/net/udp.c
+++ /dev/null
@@ -1,463 +0,0 @@
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <byteswap.h>
-#include <errno.h>
-#include <gpxe/tcpip.h>
-#include <gpxe/iobuf.h>
-#include <gpxe/xfer.h>
-#include <gpxe/open.h>
-#include <gpxe/uri.h>
-#include <gpxe/udp.h>
-
-/** @file
- *
- * UDP protocol
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-/**
- * A UDP connection
- *
- */
-struct udp_connection {
-	/** Reference counter */
-	struct refcnt refcnt;
-	/** List of UDP connections */
-	struct list_head list;
-
-	/** Data transfer interface */
-	struct xfer_interface xfer;
-
-	/** Local socket address */
-	struct sockaddr_tcpip local;
-	/** Remote socket address */
-	struct sockaddr_tcpip peer;
-};
-
-/**
- * List of registered UDP connections
- */
-static LIST_HEAD ( udp_conns );
-
-/* Forward declatations */
-static struct xfer_interface_operations udp_xfer_operations;
-struct tcpip_protocol udp_protocol;
-
-/**
- * Bind UDP connection to local port
- *
- * @v udp		UDP connection
- * @ret rc		Return status code
- *
- * Opens the UDP connection and binds to the specified local port.  If
- * no local port is specified, the first available port will be used.
- */
-static int udp_bind ( struct udp_connection *udp ) {
-	struct udp_connection *existing;
-	static uint16_t try_port = 1023;
-
-	/* If no port specified, find the first available port */
-	if ( ! udp->local.st_port ) {
-		while ( try_port ) {
-			try_port++;
-			if ( try_port < 1024 )
-				continue;
-			udp->local.st_port = htons ( try_port );
-			if ( udp_bind ( udp ) == 0 )
-				return 0;
-		}
-		return -EADDRINUSE;
-	}
-
-	/* Attempt bind to local port */
-	list_for_each_entry ( existing, &udp_conns, list ) {
-		if ( existing->local.st_port == udp->local.st_port ) {
-			DBGC ( udp, "UDP %p could not bind: port %d in use\n",
-			       udp, ntohs ( udp->local.st_port ) );
-			return -EADDRINUSE;
-		}
-	}
-
-	/* Add to UDP connection list */
-	DBGC ( udp, "UDP %p bound to port %d\n",
-	       udp, ntohs ( udp->local.st_port ) );
-
-	return 0;
-}
-
-/**
- * Open a UDP connection
- *
- * @v xfer		Data transfer interface
- * @v peer		Peer socket address, or NULL
- * @v local		Local socket address, or NULL
- * @v promisc		Socket is promiscuous
- * @ret rc		Return status code
- */
-static int udp_open_common ( struct xfer_interface *xfer,
-			     struct sockaddr *peer, struct sockaddr *local,
-			     int promisc ) {
-	struct sockaddr_tcpip *st_peer = ( struct sockaddr_tcpip * ) peer;
-	struct sockaddr_tcpip *st_local = ( struct sockaddr_tcpip * ) local;
-	struct udp_connection *udp;
-	int rc;
-
-	/* Allocate and initialise structure */
-	udp = zalloc ( sizeof ( *udp ) );
-	if ( ! udp )
-		return -ENOMEM;
-	DBGC ( udp, "UDP %p allocated\n", udp );
-	xfer_init ( &udp->xfer, &udp_xfer_operations, &udp->refcnt );
-	if ( st_peer )
-		memcpy ( &udp->peer, st_peer, sizeof ( udp->peer ) );
-	if ( st_local )
-		memcpy ( &udp->local, st_local, sizeof ( udp->local ) );
-
-	/* Bind to local port */
-	if ( ! promisc ) {
-		if ( ( rc = udp_bind ( udp ) ) != 0 )
-			goto err;
-	}
-
-	/* Attach parent interface, transfer reference to connection
-	 * list and return
-	 */
-	xfer_plug_plug ( &udp->xfer, xfer );
-	list_add ( &udp->list, &udp_conns );
-	return 0;
-
- err:
-	ref_put ( &udp->refcnt );
-	return rc;
-}
-
-/**
- * Open a UDP connection
- *
- * @v xfer		Data transfer interface
- * @v peer		Peer socket address
- * @v local		Local socket address, or NULL
- * @ret rc		Return status code
- */
-int udp_open ( struct xfer_interface *xfer, struct sockaddr *peer,
-	       struct sockaddr *local ) {
-	return udp_open_common ( xfer, peer, local, 0 );
-}
-
-/**
- * Open a promiscuous UDP connection
- *
- * @v xfer		Data transfer interface
- * @ret rc		Return status code
- *
- * Promiscuous UDP connections are required in order to support the
- * PXE API.
- */
-int udp_open_promisc ( struct xfer_interface *xfer ) {
-	return udp_open_common ( xfer, NULL, NULL, 1 );
-}
-
-/**
- * Close a UDP connection
- *
- * @v udp		UDP connection
- * @v rc		Reason for close
- */
-static void udp_close ( struct udp_connection *udp, int rc ) {
-
-	/* Close data transfer interface */
-	xfer_nullify ( &udp->xfer );
-	xfer_close ( &udp->xfer, rc );
-
-	/* Remove from list of connections and drop list's reference */
-	list_del ( &udp->list );
-	ref_put ( &udp->refcnt );
-
-	DBGC ( udp, "UDP %p closed\n", udp );
-}
-
-/**
- * Transmit data via a UDP connection to a specified address
- *
- * @v udp		UDP connection
- * @v iobuf		I/O buffer
- * @v src		Source address, or NULL to use default
- * @v dest		Destination address, or NULL to use default
- * @v netdev		Network device, or NULL to use default
- * @ret rc		Return status code
- */
-static int udp_tx ( struct udp_connection *udp, struct io_buffer *iobuf,
-		    struct sockaddr_tcpip *src, struct sockaddr_tcpip *dest,
-		    struct net_device *netdev ) {
-       	struct udp_header *udphdr;
-	size_t len;
-	int rc;
-
-	/* Check we can accommodate the header */
-	if ( ( rc = iob_ensure_headroom ( iobuf, UDP_MAX_HLEN ) ) != 0 ) {
-		free_iob ( iobuf );
-		return rc;
-	}
-
-	/* Fill in default values if not explicitly provided */
-	if ( ! src )
-		src = &udp->local;
-	if ( ! dest )
-		dest = &udp->peer;
-
-	/* Add the UDP header */
-	udphdr = iob_push ( iobuf, sizeof ( *udphdr ) );
-	len = iob_len ( iobuf );
-	udphdr->dest = dest->st_port;
-	udphdr->src = src->st_port;
-	udphdr->len = htons ( len );
-	udphdr->chksum = 0;
-	udphdr->chksum = tcpip_chksum ( udphdr, len );
-
-	/* Dump debugging information */
-	DBGC ( udp, "UDP %p TX %d->%d len %d\n", udp,
-	       ntohs ( udphdr->src ), ntohs ( udphdr->dest ),
-	       ntohs ( udphdr->len ) );
-
-	/* Send it to the next layer for processing */
-	if ( ( rc = tcpip_tx ( iobuf, &udp_protocol, src, dest, netdev,
-			       &udphdr->chksum ) ) != 0 ) {
-		DBGC ( udp, "UDP %p could not transmit packet: %s\n",
-		       udp, strerror ( rc ) );
-		return rc;
-	}
-
-	return 0;
-}
-
-/**
- * Identify UDP connection by local address
- *
- * @v local		Local address
- * @ret udp		UDP connection, or NULL
- */
-static struct udp_connection * udp_demux ( struct sockaddr_tcpip *local ) {
-	static const struct sockaddr_tcpip empty_sockaddr = { .pad = { 0, } };
-	struct udp_connection *udp;
-
-	list_for_each_entry ( udp, &udp_conns, list ) {
-		if ( ( ( udp->local.st_family == local->st_family ) ||
-		       ( udp->local.st_family == 0 ) ) &&
-		     ( ( udp->local.st_port == local->st_port ) ||
-		       ( udp->local.st_port == 0 ) ) &&
-		     ( ( memcmp ( udp->local.pad, local->pad,
-				  sizeof ( udp->local.pad ) ) == 0 ) ||
-		       ( memcmp ( udp->local.pad, empty_sockaddr.pad,
-				  sizeof ( udp->local.pad ) ) == 0 ) ) ) {
-			return udp;
-		}
-	}
-	return NULL;
-}
-
-/**
- * Process a received packet
- *
- * @v iobuf		I/O buffer
- * @v st_src		Partially-filled source address
- * @v st_dest		Partially-filled destination address
- * @v pshdr_csum	Pseudo-header checksum
- * @ret rc		Return status code
- */
-static int udp_rx ( struct io_buffer *iobuf, struct sockaddr_tcpip *st_src,
-		    struct sockaddr_tcpip *st_dest, uint16_t pshdr_csum ) {
-	struct udp_header *udphdr = iobuf->data;
-	struct udp_connection *udp;
-	struct xfer_metadata meta;
-	size_t ulen;
-	unsigned int csum;
-	int rc = 0;
-
-	/* Sanity check packet */
-	if ( iob_len ( iobuf ) < sizeof ( *udphdr ) ) {
-		DBG ( "UDP packet too short at %zd bytes (min %zd bytes)\n",
-		      iob_len ( iobuf ), sizeof ( *udphdr ) );
-		
-		rc = -EINVAL;
-		goto done;
-	}
-	ulen = ntohs ( udphdr->len );
-	if ( ulen < sizeof ( *udphdr ) ) {
-		DBG ( "UDP length too short at %zd bytes "
-		      "(header is %zd bytes)\n", ulen, sizeof ( *udphdr ) );
-		rc = -EINVAL;
-		goto done;
-	}
-	if ( ulen > iob_len ( iobuf ) ) {
-		DBG ( "UDP length too long at %zd bytes (packet is %zd "
-		      "bytes)\n", ulen, iob_len ( iobuf ) );
-		rc = -EINVAL;
-		goto done;
-	}
-	if ( udphdr->chksum ) {
-		csum = tcpip_continue_chksum ( pshdr_csum, iobuf->data, ulen );
-		if ( csum != 0 ) {
-			DBG ( "UDP checksum incorrect (is %04x including "
-			      "checksum field, should be 0000)\n", csum );
-			rc = -EINVAL;
-			goto done;
-		}
-	}
-
-	/* Parse parameters from header and strip header */
-	st_src->st_port = udphdr->src;
-	st_dest->st_port = udphdr->dest;
-	udp = udp_demux ( st_dest );
-	iob_unput ( iobuf, ( iob_len ( iobuf ) - ulen ) );
-	iob_pull ( iobuf, sizeof ( *udphdr ) );
-
-	/* Dump debugging information */
-	DBGC ( udp, "UDP %p RX %d<-%d len %zd\n", udp,
-	       ntohs ( udphdr->dest ), ntohs ( udphdr->src ), ulen );
-
-	/* Ignore if no matching connection found */
-	if ( ! udp ) {
-		DBG ( "No UDP connection listening on port %d\n",
-		      ntohs ( udphdr->dest ) );
-		rc = -ENOTCONN;
-		goto done;
-	}
-
-	/* Pass data to application */
-	memset ( &meta, 0, sizeof ( meta ) );
-	meta.src = ( struct sockaddr * ) st_src;
-	meta.dest = ( struct sockaddr * ) st_dest;
-	rc = xfer_deliver_iob_meta ( &udp->xfer, iob_disown ( iobuf ), &meta );
-
- done:
-	free_iob ( iobuf );
-	return rc;
-}
-
-struct tcpip_protocol udp_protocol __tcpip_protocol = {
-	.name = "UDP",
-	.rx = udp_rx,
-	.tcpip_proto = IP_UDP,
-};
-
-/***************************************************************************
- *
- * Data transfer interface
- *
- ***************************************************************************
- */
-
-/**
- * Close interface
- *
- * @v xfer		Data transfer interface
- * @v rc		Reason for close
- */
-static void udp_xfer_close ( struct xfer_interface *xfer, int rc ) {
-	struct udp_connection *udp =
-		container_of ( xfer, struct udp_connection, xfer );
-
-	/* Close connection */
-	udp_close ( udp, rc );
-}
-
-/**
- * Allocate I/O buffer for UDP
- *
- * @v xfer		Data transfer interface
- * @v len		Payload size
- * @ret iobuf		I/O buffer, or NULL
- */
-static struct io_buffer * udp_alloc_iob ( struct xfer_interface *xfer,
-					  size_t len ) {
-	struct udp_connection *udp =
-		container_of ( xfer, struct udp_connection, xfer );	
-	struct io_buffer *iobuf;
-
-	iobuf = alloc_iob ( UDP_MAX_HLEN + len );
-	if ( ! iobuf ) {
-		DBGC ( udp, "UDP %p cannot allocate buffer of length %zd\n",
-		       udp, len );
-		return NULL;
-	}
-	iob_reserve ( iobuf, UDP_MAX_HLEN );
-	return iobuf;
-}
-
-/**
- * Deliver datagram as I/O buffer
- *
- * @v xfer		Data transfer interface
- * @v iobuf		Datagram I/O buffer
- * @v meta		Data transfer metadata
- * @ret rc		Return status code
- */
-static int udp_xfer_deliver_iob ( struct xfer_interface *xfer,
-				  struct io_buffer *iobuf,
-				  struct xfer_metadata *meta ) {
-	struct udp_connection *udp =
-		container_of ( xfer, struct udp_connection, xfer );
-
-	/* Transmit data, if possible */
-	udp_tx ( udp, iobuf, ( ( struct sockaddr_tcpip * ) meta->src ),
-		 ( ( struct sockaddr_tcpip * ) meta->dest ), meta->netdev );
-
-	return 0;
-}
-
-/** UDP data transfer interface operations */
-static struct xfer_interface_operations udp_xfer_operations = {
-	.close		= udp_xfer_close,
-	.vredirect	= ignore_xfer_vredirect,
-	.window		= unlimited_xfer_window,
-	.alloc_iob	= udp_alloc_iob,
-	.deliver_iob	= udp_xfer_deliver_iob,
-	.deliver_raw	= xfer_deliver_as_iob,
-};
-
-/***************************************************************************
- *
- * Openers
- *
- ***************************************************************************
- */
-
-/** UDP socket opener */
-struct socket_opener udp_socket_opener __socket_opener = {
-	.semantics	= UDP_SOCK_DGRAM,
-	.family		= AF_INET,
-	.open		= udp_open,
-};
-
-/** Linkage hack */
-int udp_sock_dgram = UDP_SOCK_DGRAM;
-
-/**
- * Open UDP URI
- *
- * @v xfer		Data transfer interface
- * @v uri		URI
- * @ret rc		Return status code
- */
-static int udp_open_uri ( struct xfer_interface *xfer, struct uri *uri ) {
-	struct sockaddr_tcpip peer;
-
-	/* Sanity check */
-	if ( ! uri->host )
-		return -EINVAL;
-
-	memset ( &peer, 0, sizeof ( peer ) );
-	peer.st_port = htons ( uri_port ( uri, 0 ) );
-	return xfer_open_named_socket ( xfer, SOCK_DGRAM,
-					( struct sockaddr * ) &peer,
-					uri->host, NULL );
-}
-
-/** UDP URI opener */
-struct uri_opener udp_uri_opener __uri_opener = {
-	.scheme		= "udp",
-	.open		= udp_open_uri,
-};