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  1. /*
  2.  * Copyright (c) 2009 Lukas Mejdrech
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup ip
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  *  IP module interface.
  35.  *  The same interface is used for standalone remote modules as well as for bundle modules.
  36.  *  The standalone remote modules have to be compiled with the ip_remote.c source file.
  37.  *  The bundle modules with the ip.c source file.
  38.  */
  39.  
  40. #ifndef __NET_IP_INTERFACE_H__
  41. #define __NET_IP_INTERFACE_H__
  42.  
  43. #include <async.h>
  44.  
  45. #include <ipc/services.h>
  46.  
  47. #include "../include/device.h"
  48.  
  49. #include "../structures/packet/packet.h"
  50.  
  51. #include "in.h"
  52. #include "ip_codes.h"
  53. #include "socket_codes.h"
  54.  
  55. /** @name IP module interface
  56.  *  This interface is used by other modules.
  57.  */
  58. /*@{*/
  59.  
  60. /** Type definition of the internet pseudo header pointer.
  61.  */
  62. typedef void *      ip_pseudo_header_ref;
  63.  
  64. /** The transport layer notification function type definition.
  65.  *  Notifies the transport layer modules about the received packet/s.
  66.  *  @param[in] device_id The device identifier.
  67.  *  @param[in] packet The received packet or the received packet queue.
  68.  *  @param[in] receiver The receiving module service.
  69.  *  @param[in] error The packet error reporting service. Prefixes the received packet.
  70.  *  @returns EOK on success.
  71.  */
  72. typedef int ( * tl_received_msg_t )( device_id_t device_id, packet_t packet, services_t receiver, services_t error );
  73.  
  74. /** Creates bidirectional connection with the ip module service and registers the message receiver.
  75.  *  @param[in] service The IP module service.
  76.  *  @param[in] protocol The transport layer protocol.
  77.  *  @param[in] me The requesting module service.
  78.  *  @param[in] receiver The message receiver. Used for remote connection.
  79.  *  @param[in] tl_received_msg The message processing function. Used if bundled together.
  80.  *  @returns The phone of the needed service.
  81.  *  @returns EOK on success.
  82.  *  @returns Other error codes as defined for the bind_service() function.
  83.  */
  84. int ip_bind_service( services_t service, int protocol, services_t me, async_client_conn_t receiver, tl_received_msg_t tl_received_msg );
  85.  
  86. /** Registers the new device.
  87.  *  Registers itself as the ip packet receiver.
  88.  *  If the device uses ARP registers also the new ARP device.
  89.  *  @param[in] ip_phone The IP module phone used for (semi)remote calls.
  90.  *  @param[in] device_id The new device identifier.
  91.  *  @param[in] netif The underlying device network interface layer service.
  92.  *  @returns EOK on success.
  93.  *  @returns ENOMEM if there is not enough memory left.
  94.  *  @returns EINVAL if the device configuration is invalid.
  95.  *  @returns ENOTSUP if the device uses IPv6.
  96.  *  @returns ENOTSUP if the device uses DHCP.
  97.  *  @returns Other error codes as defined for the net_get_device_conf_req() function.
  98.  *  @returns Other error codes as defined for the arp_device_req() function.
  99.  */
  100. int ip_device_req( int ip_phone, device_id_t device_id, services_t netif );
  101.  
  102. /** Sends the packet queue.
  103.  *  The packets may get fragmented if needed.
  104.  *  @param[in] ip_phone The IP module phone used for (semi)remote calls.
  105.  *  @param[in] device_id The device identifier.
  106.  *  @param[in] packet The packet fragments as a~packet queue. All the packets have to have the same destination address.
  107.  *  @param[in] sender The sending module service.
  108.  *  @param[in] error The packet error reporting service. Prefixes the received packet.
  109.  *  @returns EOK on success.
  110.  *  @returns Other error codes as defined for the generic_send_msg() function.
  111.  */
  112. int ip_send_msg( int ip_phone, device_id_t device_id, packet_t packet, services_t sender, services_t error );
  113.  
  114. /** Connects to the IP module.
  115.  *  @param service The IP module service. Ignored parameter.
  116.  *  @returns The IP module phone on success.
  117.  *  @returns 0 if called by the bundle module.
  118.  */
  119. int ip_connect_module( services_t service );
  120.  
  121. /** Adds a route to the device routing table.
  122.  *  The target network is routed using this device.
  123.  *  @param[in] ip_phone The IP module phone used for (semi)remote calls.
  124.  *  @param[in] device_id The device identifier.
  125.  *  @param[in] address The target network address.
  126.  *  @param[in] netmask The target network mask.
  127.  *  @param[in] gateway The target network gateway. Not used if zero.
  128.  */
  129. int ip_add_route_req( int ip_phone, device_id_t device_id, in_addr_t address, in_addr_t netmask, in_addr_t gateway );
  130.  
  131. /** Sets the default gateway.
  132.  *  This gateway is used if no other route is found.
  133.  *  @param[in] ip_phone The IP module phone used for (semi)remote calls.
  134.  *  @param[in] device_id The device identifier.
  135.  *  @param[in] gateway The default gateway.
  136.  */
  137. int ip_set_gateway_req( int ip_phone, device_id_t device_id, in_addr_t gateway );
  138.  
  139. /** Returns the device packet dimensions for sending.
  140.  *  @param[in] ip_phone The IP module phone used for (semi)remote calls.
  141.  *  @param[in] device_id The device identifier.
  142.  *  @param[out] addr_len The minimum reserved address length.
  143.  *  @param[out] prefix The minimum reserved prefix size.
  144.  *  @param[out] content The maximum content size.
  145.  *  @param[out] suffix The minimum reserved suffix size.
  146.  *  @returns EOK on success.
  147.  *  @returns EBADMEM if either one of the parameters is NULL.
  148.  *  @returns ENOENT if there is no such device.
  149.  *  @returns Other error codes as defined for the generic_packet_size_req() function.
  150.  */
  151. int ip_packet_size_req( int ip_phone, device_id_t device_id, size_t * addr_len, size_t * prefix, size_t * content, size_t * suffix );
  152.  
  153. /** Notifies the IP module about the received error notification packet.
  154.  *  @param[in] ip_phone The IP module phone used for (semi)remote calls.
  155.  *  @param[in] device_id The device identifier.
  156.  *  @param[in] packet The received packet or the received packet queue.
  157.  *  @param[in] target The target internetwork module service to be delivered to.
  158.  *  @param[in] error The packet error reporting service. Prefixes the received packet.
  159.  *  @returns EOK on success.
  160.  */
  161. int ip_received_error_msg( int ip_phone, device_id_t device_id, packet_t packet, services_t target, services_t error );
  162.  
  163. /** Returns the device identifier and the IP pseudo header based on the destination address.
  164.  *  @param[in] ip_phone The IP module phone used for (semi)remote calls.
  165.  *  @param[in] protocol The transport protocol.
  166.  *  @param[in] destination The destination address.
  167.  *  @param[in] addrlen The destination address length.
  168.  *  @param[out] device_id The device identifier.
  169.  *  @param[out] header The constructed IP pseudo header.
  170.  *  @param[out] headerlen The IP pseudo header length.
  171.  */
  172. int ip_get_route_req( int ip_phone, ip_protocol_t protocol, const struct sockaddr * destination, socklen_t addrlen, device_id_t * device_id, ip_pseudo_header_ref * header, size_t * headerlen );
  173.  
  174. /*@}*/
  175.  
  176. #endif
  177.  
  178. /** @}
  179.  */
  180.