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  1. /*
  2.  * Copyright (c) 2008 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_tl
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  *  Transport layer common functions.
  35.  */
  36.  
  37. #ifndef __NET_TL_COMMON_H__
  38. #define __NET_TL_COMMON_H__
  39.  
  40. #include "../structures/packet/packet.h"
  41.  
  42. #include "../include/inet.h"
  43. #include "../include/socket_codes.h"
  44.  
  45. /** Type definition of the packet dimension.
  46.  *  @see packet_dimension
  47.  */
  48. typedef struct packet_dimension packet_dimension_t;
  49.  
  50. /** Type definition of the packet dimension pointer.
  51.  *  @see packet_dimension
  52.  */
  53. typedef packet_dimension_t *    packet_dimension_ref;
  54.  
  55. /** Packet dimension.
  56.  */
  57. struct packet_dimension{
  58.     /** Reserved packet prefix length.
  59.      */
  60.     size_t          prefix;
  61.     /** Maximal packet content length.
  62.      */
  63.     size_t          content;
  64.     /** Reserved packet suffix length.
  65.      */
  66.     size_t          suffix;
  67.     /** Maximal packet address length.
  68.      */
  69.     size_t          addr_len;
  70. };
  71.  
  72. /** Gets the address port.
  73.  *  Supports AF_INET and AF_INET6 address families.
  74.  *  @param addr The address to be updated. Input/output parameter.
  75.  *  @param addrlen The address length. Input parameter.
  76.  *  @param port The set port. Output parameter.
  77.  *  @returns EOK on success.
  78.  *  @returns EINVAL if the address length does not match the address family.
  79.  *  @returns EAFNOSUPPORT if the address family is not supported.
  80.  */
  81. int tl_get_address_port( const struct sockaddr * addr, int addrlen, uint16_t * port );
  82.  
  83. /** Sets the address port.
  84.  *  Supports AF_INET and AF_INET6 address families.
  85.  *  @param addr The address to be updated. Input/output parameter.
  86.  *  @param addrlen The address length. Input parameter.
  87.  *  @param port The port to be set. Input parameter.
  88.  *  @returns EOK on success.
  89.  *  @returns EINVAL if the address length does not match the address family.
  90.  *  @returns EAFNOSUPPORT if the address family is not supported.
  91.  */
  92. int tl_set_address_port( struct sockaddr * addr, int addrlen, uint16_t port );
  93.  
  94. /** Prepares the packet for ICMP error notification.
  95.  *  Keeps the first packet and releases all the others.
  96.  *  Releases all the packets on error.
  97.  *  @param packet_phone The packet server module phone. Input parameter.
  98.  *  @param icmp_phone The ICMP module phone. Input parameter.
  99.  *  @param packet The packet to be send. Input parameter.
  100.  *  @param error The packet error reporting service. Prefixes the received packet. Input parameter.
  101.  *  @returns EOK on success.
  102.  *  @returns ENOENT if no packet may be sent.
  103.  */
  104. int tl_prepare_icmp_packet( int packet_phone, int icmp_phone, packet_t packet, services_t error );
  105.  
  106. /** Receives data from the socket into a packet.
  107.  *  @param packet_phone The packet server module phone. Input parameter.
  108.  *  @param packet The new created packet. Output parameter.
  109.  *  @param prefix Reserved packet data prefix length. Input parameter.
  110.  *  @param dimension The packet dimension. Input parameter.
  111.  *  @param addr The destination address. Input parameter.
  112.  *  @param addrlen The address length. Input parameter.
  113.  *  @returns Number of bytes received.
  114.  *  @returns EINVAL if the client does not send data.
  115.  *  @returns ENOMEM if there is not enough memory left.
  116.  *  @returns Other error codes as defined for the ipc_data_read_finalize() function.
  117.  */
  118. int tl_socket_read_packet_data( int packet_phone, packet_ref packet, size_t prefix, const packet_dimension_ref dimension, const struct sockaddr * addr, socklen_t addrlen );
  119.  
  120. #endif
  121.  
  122. /** @}
  123.  */
  124.  
  125.