[PATCH] USB Gadget: RNDIS/Ethernet Gadget Driver (1/2)

This patch adds the RNDIS message engine and kbuild/kconfig
support for it.  This is currently labeled EXPERIMENTAL.

Patch contributed by Robert Schwebel, and developed with
support from Auerswald GmbH.

drivers/usb/gadget/Kconfig

@@ -219,9 +219,11 @@ config USB_ETH
 	     favor of simpler vendor-specific hardware, but is widely
 	     supported by firmware for smart network devices.
 
-	   - On hardware can't implement that protocol, a simpler approach
+	   - On hardware can't implement that protocol, a simple CDC subset
 	     is used, placing fewer demands on USB.
 
+	  RNDIS support is a third option, more demanding than that subset.
+
 	  Within the USB device, this gadget driver exposes a network device
 	  "usbX", where X depends on what other networking devices you have.
 	  Treat it like a two-node Ethernet link:  host, and gadget.
@@ -235,6 +237,19 @@ config USB_ETH
 	  Say "y" to link the driver statically, or "m" to build a
 	  dynamically linked module called "g_ether".
 
+config USB_ETH_RNDIS
+	bool "RNDIS support (EXPERIMENTAL)"
+	depends on USB_ETH && EXPERIMENTAL
+	default y
+	help
+	   Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol,
+	   and Microsoft provides redistributable binary RNDIS drivers for
+	   older versions of Windows.
+
+	   If you say "y" here, the Ethernet gadget driver will try to provide
+	   a second device configuration, supporting RNDIS to talk to such
+	   Microsoft USB hosts.
+
 config USB_GADGETFS
 	tristate "Gadget Filesystem (EXPERIMENTAL)"
 	depends on EXPERIMENTAL

drivers/usb/gadget/Makefile

@@ -15,6 +15,10 @@ g_serial-objs			:= serial.o usbstring.o
 gadgetfs-objs			:= inode.o
 g_file_storage-objs		:= file_storage.o usbstring.o
 
+ifeq ($(CONFIG_USB_ETH_RNDIS),y)
+	g_ether-objs		+= rndis.o
+endif
+ 
 obj-$(CONFIG_USB_ZERO)		+= g_zero.o
 obj-$(CONFIG_USB_ETH)		+= g_ether.o
 obj-$(CONFIG_USB_GADGETFS)	+= gadgetfs.o

drivers/usb/gadget/ndis.h

+/*
+ * ndis.h 
+ * 
+ * ntddndis.h modified by Benedikt Spranger <b.spranger@pengutronix.de>
+ * 
+ * Thanks to the cygwin development team, 
+ * espacially to Casper S. Hornstrup <chorns@users.sourceforge.net>
+ * 
+ * THIS SOFTWARE IS NOT COPYRIGHTED
+ *
+ * This source code is offered for use in the public domain. You may
+ * use, modify or distribute it freely.
+ *
+ * This code is distributed in the hope that it will be useful but
+ * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
+ * DISCLAIMED. This includes but is not limited to warranties of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ */
+
+#ifndef _LINUX_NDIS_H
+#define _LINUX_NDIS_H
+
+
+#define NDIS_STATUS_MULTICAST_FULL	  0xC0010009
+#define NDIS_STATUS_MULTICAST_EXISTS      0xC001000A
+#define NDIS_STATUS_MULTICAST_NOT_FOUND   0xC001000B
+
+/* NDIS_PNP_CAPABILITIES.Flags constants */
+#define NDIS_DEVICE_WAKE_UP_ENABLE                0x00000001
+#define NDIS_DEVICE_WAKE_ON_PATTERN_MATCH_ENABLE  0x00000002
+#define NDIS_DEVICE_WAKE_ON_MAGIC_PACKET_ENABLE   0x00000004
+
+/* Required Object IDs (OIDs) */
+#define OID_GEN_SUPPORTED_LIST            0x00010101
+#define OID_GEN_HARDWARE_STATUS           0x00010102
+#define OID_GEN_MEDIA_SUPPORTED           0x00010103
+#define OID_GEN_MEDIA_IN_USE              0x00010104
+#define OID_GEN_MAXIMUM_LOOKAHEAD         0x00010105
+#define OID_GEN_MAXIMUM_FRAME_SIZE        0x00010106
+#define OID_GEN_LINK_SPEED                0x00010107
+#define OID_GEN_TRANSMIT_BUFFER_SPACE     0x00010108
+#define OID_GEN_RECEIVE_BUFFER_SPACE      0x00010109
+#define OID_GEN_TRANSMIT_BLOCK_SIZE       0x0001010A
+#define OID_GEN_RECEIVE_BLOCK_SIZE        0x0001010B
+#define OID_GEN_VENDOR_ID                 0x0001010C
+#define OID_GEN_VENDOR_DESCRIPTION        0x0001010D
+#define OID_GEN_CURRENT_PACKET_FILTER     0x0001010E
+#define OID_GEN_CURRENT_LOOKAHEAD         0x0001010F
+#define OID_GEN_DRIVER_VERSION            0x00010110
+#define OID_GEN_MAXIMUM_TOTAL_SIZE        0x00010111
+#define OID_GEN_PROTOCOL_OPTIONS          0x00010112
+#define OID_GEN_MAC_OPTIONS               0x00010113
+#define OID_GEN_MEDIA_CONNECT_STATUS      0x00010114
+#define OID_GEN_MAXIMUM_SEND_PACKETS      0x00010115
+#define OID_GEN_VENDOR_DRIVER_VERSION     0x00010116
+#define OID_GEN_SUPPORTED_GUIDS           0x00010117
+#define OID_GEN_NETWORK_LAYER_ADDRESSES   0x00010118
+#define OID_GEN_TRANSPORT_HEADER_OFFSET   0x00010119
+#define OID_GEN_MACHINE_NAME              0x0001021A
+#define OID_GEN_RNDIS_CONFIG_PARAMETER    0x0001021B
+#define OID_GEN_VLAN_ID                   0x0001021C
+
+/* Optional OIDs */
+#define OID_GEN_MEDIA_CAPABILITIES        0x00010201
+#define OID_GEN_PHYSICAL_MEDIUM           0x00010202
+
+/* Required statistics OIDs */
+#define OID_GEN_XMIT_OK                   0x00020101
+#define OID_GEN_RCV_OK                    0x00020102
+#define OID_GEN_XMIT_ERROR                0x00020103
+#define OID_GEN_RCV_ERROR                 0x00020104
+#define OID_GEN_RCV_NO_BUFFER             0x00020105
+
+/* Optional statistics OIDs */
+#define OID_GEN_DIRECTED_BYTES_XMIT       0x00020201
+#define OID_GEN_DIRECTED_FRAMES_XMIT      0x00020202
+#define OID_GEN_MULTICAST_BYTES_XMIT      0x00020203
+#define OID_GEN_MULTICAST_FRAMES_XMIT     0x00020204
+#define OID_GEN_BROADCAST_BYTES_XMIT      0x00020205
+#define OID_GEN_BROADCAST_FRAMES_XMIT     0x00020206
+#define OID_GEN_DIRECTED_BYTES_RCV        0x00020207
+#define OID_GEN_DIRECTED_FRAMES_RCV       0x00020208
+#define OID_GEN_MULTICAST_BYTES_RCV       0x00020209
+#define OID_GEN_MULTICAST_FRAMES_RCV      0x0002020A
+#define OID_GEN_BROADCAST_BYTES_RCV       0x0002020B
+#define OID_GEN_BROADCAST_FRAMES_RCV      0x0002020C
+#define OID_GEN_RCV_CRC_ERROR             0x0002020D
+#define OID_GEN_TRANSMIT_QUEUE_LENGTH     0x0002020E
+#define OID_GEN_GET_TIME_CAPS             0x0002020F
+#define OID_GEN_GET_NETCARD_TIME          0x00020210
+#define OID_GEN_NETCARD_LOAD              0x00020211
+#define OID_GEN_DEVICE_PROFILE            0x00020212
+#define OID_GEN_INIT_TIME_MS              0x00020213
+#define OID_GEN_RESET_COUNTS              0x00020214
+#define OID_GEN_MEDIA_SENSE_COUNTS        0x00020215
+#define OID_GEN_FRIENDLY_NAME             0x00020216
+#define OID_GEN_MINIPORT_INFO             0x00020217
+#define OID_GEN_RESET_VERIFY_PARAMETERS   0x00020218
+
+/* IEEE 802.3 (Ethernet) OIDs */
+#define NDIS_802_3_MAC_OPTION_PRIORITY    0x00000001
+
+#define OID_802_3_PERMANENT_ADDRESS       0x01010101
+#define OID_802_3_CURRENT_ADDRESS         0x01010102
+#define OID_802_3_MULTICAST_LIST          0x01010103
+#define OID_802_3_MAXIMUM_LIST_SIZE       0x01010104
+#define OID_802_3_MAC_OPTIONS             0x01010105
+#define OID_802_3_RCV_ERROR_ALIGNMENT     0x01020101
+#define OID_802_3_XMIT_ONE_COLLISION      0x01020102
+#define OID_802_3_XMIT_MORE_COLLISIONS    0x01020103
+#define OID_802_3_XMIT_DEFERRED           0x01020201
+#define OID_802_3_XMIT_MAX_COLLISIONS     0x01020202
+#define OID_802_3_RCV_OVERRUN             0x01020203
+#define OID_802_3_XMIT_UNDERRUN           0x01020204
+#define OID_802_3_XMIT_HEARTBEAT_FAILURE  0x01020205
+#define OID_802_3_XMIT_TIMES_CRS_LOST     0x01020206
+#define OID_802_3_XMIT_LATE_COLLISIONS    0x01020207
+
+/* OID_GEN_MINIPORT_INFO constants */
+#define NDIS_MINIPORT_BUS_MASTER                      0x00000001
+#define NDIS_MINIPORT_WDM_DRIVER                      0x00000002
+#define NDIS_MINIPORT_SG_LIST                         0x00000004
+#define NDIS_MINIPORT_SUPPORTS_MEDIA_QUERY            0x00000008
+#define NDIS_MINIPORT_INDICATES_PACKETS               0x00000010
+#define NDIS_MINIPORT_IGNORE_PACKET_QUEUE             0x00000020
+#define NDIS_MINIPORT_IGNORE_REQUEST_QUEUE            0x00000040
+#define NDIS_MINIPORT_IGNORE_TOKEN_RING_ERRORS        0x00000080
+#define NDIS_MINIPORT_INTERMEDIATE_DRIVER             0x00000100
+#define NDIS_MINIPORT_IS_NDIS_5                       0x00000200
+#define NDIS_MINIPORT_IS_CO                           0x00000400
+#define NDIS_MINIPORT_DESERIALIZE                     0x00000800
+#define NDIS_MINIPORT_REQUIRES_MEDIA_POLLING          0x00001000
+#define NDIS_MINIPORT_SUPPORTS_MEDIA_SENSE            0x00002000
+#define NDIS_MINIPORT_NETBOOT_CARD                    0x00004000
+#define NDIS_MINIPORT_PM_SUPPORTED                    0x00008000
+#define NDIS_MINIPORT_SUPPORTS_MAC_ADDRESS_OVERWRITE  0x00010000
+#define NDIS_MINIPORT_USES_SAFE_BUFFER_APIS           0x00020000
+#define NDIS_MINIPORT_HIDDEN                          0x00040000
+#define NDIS_MINIPORT_SWENUM                          0x00080000
+#define NDIS_MINIPORT_SURPRISE_REMOVE_OK              0x00100000
+#define NDIS_MINIPORT_NO_HALT_ON_SUSPEND              0x00200000
+#define NDIS_MINIPORT_HARDWARE_DEVICE                 0x00400000
+#define NDIS_MINIPORT_SUPPORTS_CANCEL_SEND_PACKETS    0x00800000
+#define NDIS_MINIPORT_64BITS_DMA                      0x01000000
+
+#define NDIS_MEDIUM_802_3		0x00000000
+#define NDIS_MEDIUM_802_5		0x00000001
+#define NDIS_MEDIUM_FDDI		0x00000002
+#define NDIS_MEDIUM_WAN			0x00000003
+#define NDIS_MEDIUM_LOCAL_TALK		0x00000004
+#define NDIS_MEDIUM_DIX			0x00000005
+#define NDIS_MEDIUM_ARCENT_RAW		0x00000006
+#define NDIS_MEDIUM_ARCENT_878_2	0x00000007
+#define NDIS_MEDIUM_ATM			0x00000008
+#define NDIS_MEDIUM_WIRELESS_LAN	0x00000009
+#define NDIS_MEDIUM_IRDA		0x0000000A
+#define NDIS_MEDIUM_BPC			0x0000000B
+#define NDIS_MEDIUM_CO_WAN		0x0000000C
+#define NDIS_MEDIUM_1394		0x0000000D
+
+#define NDIS_PACKET_TYPE_DIRECTED	0x00000001
+#define NDIS_PACKET_TYPE_MULTICAST	0x00000002
+#define NDIS_PACKET_TYPE_ALL_MULTICAST	0x00000004
+#define NDIS_PACKET_TYPE_BROADCAST	0x00000008
+#define NDIS_PACKET_TYPE_SOURCE_ROUTING	0x00000010
+#define NDIS_PACKET_TYPE_PROMISCUOUS	0x00000020
+#define NDIS_PACKET_TYPE_SMT		0x00000040
+#define NDIS_PACKET_TYPE_ALL_LOCAL	0x00000080
+#define NDIS_PACKET_TYPE_GROUP		0x00000100
+#define NDIS_PACKET_TYPE_ALL_FUNCTIONAL	0x00000200
+#define NDIS_PACKET_TYPE_FUNCTIONAL	0x00000400
+#define NDIS_PACKET_TYPE_MAC_FRAME	0x00000800
+
+#define NDIS_MEDIA_STATE_CONNECTED	0x00000000
+#define NDIS_MEDIA_STATE_DISCONNECTED	0x00000001
+
+#define NDIS_MAC_OPTION_COPY_LOOKAHEAD_DATA     0x00000001
+#define NDIS_MAC_OPTION_RECEIVE_SERIALIZED      0x00000002
+#define NDIS_MAC_OPTION_TRANSFERS_NOT_PEND      0x00000004
+#define NDIS_MAC_OPTION_NO_LOOPBACK             0x00000008
+#define NDIS_MAC_OPTION_FULL_DUPLEX             0x00000010
+#define NDIS_MAC_OPTION_EOTX_INDICATION         0x00000020
+#define NDIS_MAC_OPTION_8021P_PRIORITY          0x00000040
+#define NDIS_MAC_OPTION_RESERVED                0x80000000
+
+#endif /* _LINUX_NDIS_H */

drivers/usb/gadget/rndis.h

+/* 
+ * RNDIS	Definitions for Remote NDIS
+ * 
+ * Version:	$Id: rndis.h,v 1.15 2004/03/25 21:33:46 robert Exp $
+ * 
+ * Authors:	Benedikt Spranger, Pengutronix
+ * 		Robert Schwebel, Pengutronix
+ * 
+ * 		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		version 2, as published by the Free Software Foundation. 
+ * 
+ * 		Due to the Remote NDIS Specification License Agreement this 
+ *		program may only be used to interact with a Microsoft Windows
+ * 		operating system or a bus/network-connected communication 
+ *		device.
+ */
+
+#ifndef _LINUX_RNDIS_H
+#define _LINUX_RNDIS_H
+
+#include "ndis.h"
+
+#define RNDIS_MAXIMUM_FRAME_SIZE	1518
+#define RNDIS_MAX_TOTAL_SIZE		1558
+
+/* Remote NDIS Versions */
+#define RNDIS_MAJOR_VERSION		1
+#define RNDIS_MINOR_VERSION		0
+
+/* Status Values */
+#define RNDIS_STATUS_SUCCESS		0x00000000U	/* Success           */
+#define RNDIS_STATUS_FAILURE		0xC0000001U	/* Unspecified error */
+#define RNDIS_STATUS_INVALID_DATA	0xC0010015U	/* Invalid data      */
+#define RNDIS_STATUS_NOT_SUPPORTED	0xC00000BBU	/* Unsupported request */
+#define RNDIS_STATUS_MEDIA_CONNECT	0x4001000BU	/* Device connected  */
+#define RNDIS_STATUS_MEDIA_DISCONNECT	0x4001000CU	/* Device disconnected */
+/* For all not specified status messages:
+ * RNDIS_STATUS_Xxx -> NDIS_STATUS_Xxx 
+ */
+
+/* Message Set for Connectionless (802.3) Devices */
+#define REMOTE_NDIS_INIZIALIZE_MSG	0x00000002U	/* Initialize device */
+#define REMOTE_NDIS_HALT_MSG		0x00000003U
+#define REMOTE_NDIS_QUERY_MSG		0x00000004U
+#define REMOTE_NDIS_SET_MSG		0x00000005U
+#define REMOTE_NDIS_RESET_MSG		0x00000006U
+#define REMOTE_NDIS_INDICATE_STATUS_MSG	0x00000007U
+#define REMOTE_NDIS_KEEPALIVE_MSG	0x00000008U
+
+/* Message completion */
+#define REMOTE_NDIS_INITIALIZE_CMPLT	0x80000002U
+#define REMOTE_NDIS_QUERY_CMPLT		0x80000004U
+#define REMOTE_NDIS_SET_CMPLT		0x80000005U
+#define REMOTE_NDIS_RESET_CMPLT		0x80000006U
+#define REMOTE_NDIS_KEEPALIVE_CMPLT	0x80000008U
+
+/* Device Flags */
+#define RNDIS_DF_CONNECTIONLESS		0x00000001U
+#define RNDIS_DF_CONNECTION_ORIENTED	0x00000002U
+
+#define RNDIS_MEDIUM_802_3		0x00000000U
+
+/* supported OIDs */
+static const u32 oid_supported_list [] = 
+{
+	/* mandatory general */
+	/* the general stuff */
+	OID_GEN_SUPPORTED_LIST,
+	OID_GEN_HARDWARE_STATUS,
+	OID_GEN_MEDIA_SUPPORTED,
+	OID_GEN_MEDIA_IN_USE,
+	OID_GEN_MAXIMUM_FRAME_SIZE,
+	OID_GEN_LINK_SPEED,
+	OID_GEN_TRANSMIT_BUFFER_SPACE,
+	OID_GEN_TRANSMIT_BLOCK_SIZE,
+	OID_GEN_RECEIVE_BLOCK_SIZE,
+	OID_GEN_VENDOR_ID,
+	OID_GEN_VENDOR_DESCRIPTION,
+	OID_GEN_VENDOR_DRIVER_VERSION,
+	OID_GEN_CURRENT_PACKET_FILTER,
+	OID_GEN_MAXIMUM_TOTAL_SIZE,
+	OID_GEN_MAC_OPTIONS,
+	OID_GEN_MEDIA_CONNECT_STATUS,
+	OID_GEN_PHYSICAL_MEDIUM,
+	OID_GEN_RNDIS_CONFIG_PARAMETER,
+	
+	/* the statistical stuff */
+	OID_GEN_XMIT_OK,
+	OID_GEN_RCV_OK,
+	OID_GEN_XMIT_ERROR,
+	OID_GEN_RCV_ERROR,
+	OID_GEN_RCV_NO_BUFFER,
+	OID_GEN_DIRECTED_BYTES_XMIT,
+	OID_GEN_DIRECTED_FRAMES_XMIT,
+	OID_GEN_MULTICAST_BYTES_XMIT,
+	OID_GEN_MULTICAST_FRAMES_XMIT,
+	OID_GEN_BROADCAST_BYTES_XMIT,
+	OID_GEN_BROADCAST_FRAMES_XMIT,
+	OID_GEN_DIRECTED_BYTES_RCV,
+	OID_GEN_DIRECTED_FRAMES_RCV,
+	OID_GEN_MULTICAST_BYTES_RCV,
+	OID_GEN_MULTICAST_FRAMES_RCV,
+	OID_GEN_BROADCAST_BYTES_RCV,
+	OID_GEN_BROADCAST_FRAMES_RCV,
+	OID_GEN_RCV_CRC_ERROR,
+	OID_GEN_TRANSMIT_QUEUE_LENGTH,
+
+    	/* mandatory 802.3 */
+	/* the general stuff */
+	OID_802_3_PERMANENT_ADDRESS,
+	OID_802_3_CURRENT_ADDRESS,
+	OID_802_3_MULTICAST_LIST,
+	OID_802_3_MAC_OPTIONS,
+	OID_802_3_MAXIMUM_LIST_SIZE,
+	
+	/* the statistical stuff */
+	OID_802_3_RCV_ERROR_ALIGNMENT,
+	OID_802_3_XMIT_ONE_COLLISION,
+	OID_802_3_XMIT_MORE_COLLISIONS
+};
+
+
+typedef struct rndis_init_msg_type 
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	RequestID;
+	u32	MajorVersion;
+	u32	MinorVersion;
+	u32	MaxTransferSize;
+} rndis_init_msg_type;
+
+typedef struct rndis_init_cmplt_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	RequestID;
+	u32	Status;
+	u32	MajorVersion;
+	u32	MinorVersion;
+	u32	DeviceFlags;
+	u32	Medium;
+	u32	MaxPacketsPerTransfer;
+	u32	MaxTransferSize;
+	u32	PacketAlignmentFactor;
+	u32	AFListOffset;
+	u32	AFListSize;
+} rndis_init_cmplt_type;
+
+typedef struct rndis_halt_msg_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	RequestID;
+} rndis_halt_msg_type;
+
+typedef struct rndis_query_msg_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	RequestID;
+	u32	OID;
+	u32	InformationBufferLength;
+	u32	InformationBufferOffset;
+	u32	DeviceVcHandle;
+} rndis_query_msg_type;
+
+typedef struct rndis_query_cmplt_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	RequestID;
+	u32	Status;
+	u32	InformationBufferLength;
+	u32	InformationBufferOffset;
+} rndis_query_cmplt_type;
+
+typedef struct rndis_set_msg_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	RequestID;
+	u32	OID;
+	u32	InformationBufferLength;
+	u32	InformationBufferOffset;
+	u32	DeviceVcHandle;
+} rndis_set_msg_type;
+
+typedef struct rndis_set_cmplt_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	RequestID;
+	u32	Status;
+} rndis_set_cmplt_type;
+
+typedef struct rndis_reset_msg_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	Reserved;
+} rndis_reset_msg_type;
+
+typedef struct rndis_reset_cmplt_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	Status;
+	u32	AddressingReset;
+} rndis_reset_cmplt_type;
+
+typedef struct rndis_indicate_status_msg_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	Status;
+	u32	StatusBufferLength;
+	u32	StatusBufferOffset;
+} rndis_indicate_status_msg_type;
+
+typedef struct rndis_keepalive_msg_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	RequestID;
+} rndis_keepalive_msg_type;
+
+typedef struct rndis_keepalive_cmplt_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	RequestID;
+	u32	Status;
+} rndis_keepalive_cmplt_type;
+
+struct rndis_packet_msg_type
+{
+	u32	MessageType;
+	u32	MessageLength;
+	u32	DataOffset;
+	u32	DataLength;
+	u32	OOBDataOffset;
+	u32	OOBDataLength;
+	u32	NumOOBDataElements;
+	u32	PerPacketInfoOffset;
+	u32	PerPacketInfoLength;
+	u32	VcHandle;
+	u32	Reserved;
+};
+
+struct rndis_config_parameter
+{
+	u32	ParameterNameOffset;
+	u32	ParameterNameLength;
+	u32	ParameterType;
+	u32	ParameterValueOffset;
+	u32	ParameterValueLength;
+};
+
+/* implementation specific */
+enum rndis_state
+{
+	RNDIS_UNINITIALIZED,
+	RNDIS_INITIALIZED,
+	RNDIS_DATA_INITIALIZED,
+};
+
+typedef struct rndis_resp_t
+{
+	struct list_head	list;
+	u8			*buf;
+	u32			length;
+	int			send;
+} rndis_resp_t;
+
+typedef struct rndis_params
+{
+	u8			confignr;
+	int			used;
+	enum rndis_state	state;
+	u32			medium;
+	u32			speed;
+	u32			media_state;
+	struct net_device 	*dev;
+	struct net_device_stats *stats;
+	u32			vendorID;
+	const char		*vendorDescr;
+	int 			(*ack) (struct net_device *);
+	struct list_head	resp_queue;
+} rndis_params;
+
+/* RNDIS Message parser and other useless functions */
+int  rndis_msg_parser (u8 configNr, u8 *buf);
+int  rndis_register (int (*rndis_control_ack) (struct net_device *));
+void rndis_deregister (int configNr);
+int  rndis_set_param_dev (u8 configNr, struct net_device *dev,
+			 struct net_device_stats *stats);
+int  rndis_set_param_vendor (u8 configNr, u32 vendorID, 
+			    const char *vendorDescr);
+int  rndis_set_param_medium (u8 configNr, u32 medium, u32 speed);
+void rndis_add_hdr (struct sk_buff *skb);
+int  rndis_rm_hdr (u8 *buf, u32 *length);
+u8   *rndis_get_next_response (int configNr, u32 *length);
+void rndis_free_response (int configNr, u8 *buf);
+int  rndis_signal_connect (int configNr);
+int  rndis_signal_disconnect (int configNr);
+int  rndis_state (int configNr);
+
+int __init rndis_init (void);
+void __exit rndis_exit (void);
+
+#endif  /* _LINUX_RNDIS_H */