1 files changed, 76 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/gpxe/src/net/cachedhcp.c b/contrib/syslinux-4.02/gpxe/src/net/cachedhcp.c
new file mode 100644
index 0000000..37f344b
--- /dev/null
+++ b/contrib/syslinux-4.02/gpxe/src/net/cachedhcp.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2009 Joshua Oreman <oremanj@rwcr.net>.
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gpxe/dhcp.h>
+#include <gpxe/dhcppkt.h>
+#include <gpxe/netdevice.h>
+#include <gpxe/iobuf.h>
+#include <gpxe/uaccess.h>
+
+/** @file
+ *
+ * Cached DHCP packet handling
+ *
+ */
+
+/**
+ * Store cached DHCPACK packet
+ *
+ * @v data		User pointer to cached DHCP packet data
+ * @v len		Length of cached DHCP packet data
+ * @ret rc		Return status code
+ *
+ * This function should be called by the architecture-specific
+ * get_cached_dhcpack() handler.
+ */
+void store_cached_dhcpack ( userptr_t data, size_t len ) {
+	struct dhcp_packet *dhcppkt;
+	struct dhcphdr *dhcphdr;
+	struct settings *parent;
+	int rc;
+
+	/* Create DHCP packet */
+	dhcppkt = zalloc ( sizeof ( *dhcppkt ) + len );
+	if ( ! dhcppkt )
+		return;
+
+	/* Fill in data for DHCP packet */
+	dhcphdr = ( ( ( void * ) dhcppkt ) + sizeof ( * dhcppkt ) );
+	copy_from_user ( dhcphdr, data, 0, len );
+	dhcppkt_init ( dhcppkt, dhcphdr, len );
+	DBG_HD ( dhcppkt->options.data, dhcppkt->options.len );
+
+	/* Register settings on the last opened network device.
+	 * This will have the effect of registering cached settings
+	 * with a network device when "dhcp netX" is performed for that
+	 * device, which is usually what we want.
+	 */
+	parent = netdev_settings ( last_opened_netdev() );
+	if ( ( rc = register_settings ( &dhcppkt->settings, parent ) ) != 0 )
+		DBG ( "DHCP could not register cached settings: %s\n",
+		      strerror ( rc ) );
+
+	dhcppkt_put ( dhcppkt );
+
+	DBG ( "DHCP registered cached settings\n" );
+}