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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 net
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  *  Generic module functions.
  35.  */
  36.  
  37. #ifndef __NET_MODULES_H__
  38. #define __NET_MODULES_H__
  39.  
  40. #include <async.h>
  41.  
  42. #include <ipc/ipc.h>
  43. #include <ipc/services.h>
  44.  
  45. /** Converts the data length between different types.
  46.  *  @param type_from The source type. Input parameter.
  47.  *  @param type_to The destination type. Input parameter.
  48.  *  @param count The number units of the source type size. Input parameter.
  49.  */
  50. #define CONVERT_SIZE( type_from, type_to, count )   (( sizeof( type_from ) / sizeof( type_to )) * ( count ))
  51.  
  52. /** Registers the module service at the name server.
  53.  *  @param me The module service. Input parameter.
  54.  *  @param phonehash The created phone hash. Output parameter.
  55.  */
  56. #define REGISTER_ME( me, phonehash )    ipc_connect_to_me( PHONE_NS, ( me ), 0, 0, ( phonehash ))
  57.  
  58. /** Connect to the needed module function type definition.
  59.  *  @param need The needed module service. Input parameter.
  60.  *  @returns The phone of the needed service.
  61.  */
  62. typedef int connect_module_t( services_t need );
  63.  
  64. /** Connects to the needed module.
  65.  *  @param need The needed module service. Input parameter.
  66.  *  @returns The phone of the needed service.
  67.  */
  68. int connect_to_service( services_t need );
  69.  
  70. /** Creates bidirectional connection with the needed module service and registers the message receiver.
  71.  *  @param need The needed module service. Input parameter.
  72.  *  @param arg1 The first parameter. Input parameter.
  73.  *  @param arg2 The second parameter. Input parameter.
  74.  *  @param arg3 The third parameter. Input parameter.
  75.  *  @param client_receiver The message receiver. Input parameter.
  76.  *  @returns The phone of the needed service.
  77.  *  @returns Other error codes as defined for the ipc_connect_to_me() function.
  78.  */
  79. int bind_service( services_t need, ipcarg_t arg1, ipcarg_t arg2, ipcarg_t arg3, async_client_conn_t client_receiver );
  80.  
  81. /** Answers the call.
  82.  *  @param callid The call identifier. Input parameter.
  83.  *  @param result The message processing result. Input parameter.
  84.  *  @param answer The message processing answer. Input parameter.
  85.  *  @param answer_count The number of answer parameters. Input parameter.
  86.  */
  87. void    answer_call( ipc_callid_t callid, int result, ipc_call_t * answer, int answer_count );
  88.  
  89. /** Refreshes answer structure and parameters count.
  90.  *  Erases all attributes.
  91.  *  @param answer The message processing answer structure. Input/output parameter.
  92.  *  @param answer_count The number of answer parameters. Input/output parameter.
  93.  */
  94. void    refresh_answer( ipc_call_t * answer, int * answer_count );
  95.  
  96. /** Receives data from the other party.
  97.  *  The received data buffer is allocated and returned.
  98.  *  @param data The data buffer to be filled. Output parameter.
  99.  *  @param length The buffer length. Output parameter.
  100.  *  @returns EOK on success.
  101.  *  @returns EBADMEM if the data or the length parameter is NULL.
  102.  *  @returns EINVAL if the client does not send data.
  103.  *  @returns ENOMEM if there is not enough memory left.
  104.  *  @returns Other error codes as defined for the ipc_data_write_finalize() function.
  105.  */
  106. int data_receive( void ** data, size_t * length );
  107.  
  108. /** Replies the data to the other party.
  109.  *  @param data The data buffer to be sent. Input parameter.
  110.  *  @param data_length The buffer length. Input parameter.
  111.  *  @returns EOK on success.
  112.  *  @returns EINVAL if the client does not expect the data.
  113.  *  @returns EOVERFLOW if the client does not expect all the data. Only partial data are transfered.
  114.  *  @returns Other error codes as defined for the ipc_data_read_finalize() function.
  115.  */
  116. int data_reply( void * data, size_t data_length );
  117.  
  118. #endif
  119.  
  120. /** @}
  121.  */
  122.