Index: uspace/srv/net/netif/netif.h
===================================================================
--- uspace/srv/net/netif/netif.h	(revision 21580dd3dd9a49828a6c8dd3988e651a60708c10)
+++ uspace/srv/net/netif/netif.h	(revision 21580dd3dd9a49828a6c8dd3988e651a60708c10)
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 2009 Lukas Mejdrech
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup netif
+ *  @{
+ */
+
+/** @file
+ *  Network interface module skeleton.
+ *  The skeleton has to be part of each network interface module.
+ *  The skeleton can be also part of the module bundled with the network interface layer.
+ */
+
+#ifndef __NET_NETIF_H__
+#define __NET_NETIF_H__
+
+#include <async.h>
+#include <fibril_synch.h>
+
+#include <ipc/ipc.h>
+
+#include "../err.h"
+
+#include "../include/device.h"
+
+#include "../structures/packet/packet.h"
+
+/** Network interface module skeleton global data.
+ */
+typedef struct netif_globals	netif_globals_t;
+
+/** Type definition of the device specific data.
+ *  @see netif_device
+ */
+typedef struct netif_device	device_t;
+
+/** Type definition of the device specific data pointer.
+ *  @see netif_device
+ */
+typedef device_t *			device_ref;
+
+/** Device map.
+ *  Maps device identifiers to the network interface device specific data.
+ *  @see device.h
+ */
+DEVICE_MAP_DECLARE( device_map, device_t );
+
+/** Network interface device specific data.
+ */
+struct	netif_device{
+	/** Device identifier.
+	 */
+	device_id_t	device_id;
+	/** Receiving network interface layer phone.
+	 */
+	int		nil_phone;
+	/** Actual device state.
+	 */
+	device_state_t	state;
+	/** Driver specific data.
+	 */
+	void *		specific;
+};
+
+/** Network interface module skeleton global data.
+ */
+struct	netif_globals{
+	/** Networking module phone.
+	 */
+	int		net_phone;
+	/**	Device map.
+	 */
+	device_map_t	device_map;
+	/** Safety lock.
+	 */
+	fibril_rwlock_t	lock;
+};
+
+/**	Finds the device specific data.
+ *  @param[in] device_id The device identifier.
+ *  @param[out] device The device specific data.
+ *  @returns EOK on success.
+ *  @returns ENOENT if device is not found.
+ *  @returns EPERM if the device is not initialized.
+ */
+int	find_device( device_id_t device_id, device_ref * device );
+
+/** Clears the usage statistics.
+ *  @param[in] stats The usage statistics.
+ */
+void	null_device_stats( device_stats_ref stats );
+
+// prepared for future optimalizations
+/** Releases the given packet.
+ *  @param[in] packet_id The packet identifier.
+ */
+void	netif_pq_release( packet_id_t packet_id );
+
+/** Allocates new packet to handle the given content size.
+ *  @param[in] content The minimum content size.
+ *  @returns The allocated packet.
+ *  @returns NULL if there is an error.
+ */
+packet_t netif_packet_get_1( size_t content );
+
+/** Processes the netif module messages.
+ *  @param[in] callid The message identifier.
+ *  @param[in] call The message parameters.
+ *  @param[out] answer The message answer parameters.
+ *  @param[out] answer_count The last parameter for the actual answer in the answer parameter.
+ *  @returns EOK on success.
+ *  @returns ENOTSUP if the message is not known.
+ *  @returns Other error codes as defined for each specific module message function.
+ *  @see netif_interface.h
+ *  @see IS_NET_NETIF_MESSAGE()
+ */
+int	netif_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count );
+
+/** Initializes the netif module.
+ *  The function has to be defined in each module.
+ *  @param[in] client_connection The client connection functio to be registered.
+ *  @returns EOK on success.
+ *  @returns Other error codes as defined for each specific module message function.
+ */
+int	netif_init_module( async_client_conn_t client_connection );
+
+/** Starts and maintains the netif module until terminated.
+ *  @returns EOK after the module is terminated.
+ */
+int netif_run_module( void );
+
+#endif
+
+/** @}
+ */
+
