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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 netif
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  */
  35.  
  36. #include <async.h>
  37. #include <mem.h>
  38. #include <rwlock.h>
  39. #include <stdio.h>
  40.  
  41. #include <ipc/ipc.h>
  42. #include <ipc/services.h>
  43.  
  44. #include "../err.h"
  45. #include "../messages.h"
  46. #include "../modules.h"
  47.  
  48. #include "../structures/packet/packet.h"
  49. #include "../structures/packet/packet_client.h"
  50. #include "../structures/measured_strings.h"
  51.  
  52. #include "device.h"
  53. #include "netif.h"
  54. #include "netif_interface.h"
  55.  
  56. #define IPC_GET_DEVICE( call )      ( device_id_t ) IPC_GET_ARG1( * call )
  57. #define IPC_GET_PACKET( call )      ( packet_id_t ) IPC_GET_ARG2( * call )
  58. #define IPC_GET_IRQ( call )     ( int ) IPC_GET_ARG2( * call )
  59. #define IPC_GET_IO( call )      ( int ) IPC_GET_ARG3( * call )
  60. #define IPC_GET_PHONE( call )       ( int ) IPC_GET_ARG5( * call )
  61.  
  62. extern netif_globals_t netif_globals;
  63.  
  64. DEVICE_MAP_IMPLEMENT( device_map, device_t )
  65.  
  66. int module_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count );
  67. int netif_start_module( async_client_conn_t client_connection );
  68. int register_message( device_id_t device_id, int phone );
  69.  
  70. int find_device( device_id_t device_id, device_ref * device ){
  71.     if( ! device ) return EBADMEM;
  72.     * device = device_map_find( & netif_globals.device_map, device_id );
  73.     if( ! * device ) return ENOENT;
  74.     if(( ** device ).state == NETIF_NULL ) return EPERM;
  75.     return EOK;
  76. }
  77.  
  78. void null_device_stats( device_stats_ref stats ){
  79.     bzero( stats, sizeof( device_stats_t ));
  80. }
  81.  
  82. int register_message( device_id_t device_id, int phone ){
  83.     ERROR_DECLARE;
  84.  
  85.     device_ref  device;
  86.  
  87.     ERROR_PROPAGATE( find_device( device_id, & device ));
  88.     if( device->nil_phone > 0 ) return ELIMIT;
  89.     device->nil_phone = phone;
  90.     printf( "\nNew receiver of the device %d registered:\n\tphone\t= %d", device->device_id, device->nil_phone );
  91.     return EOK;
  92. }
  93.  
  94. int netif_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){
  95.     ERROR_DECLARE;
  96.  
  97.     size_t              length;
  98.     device_stats_t      stats;
  99.     packet_t            packet;
  100.     measured_string_t   address;
  101.  
  102.     * answer_count = 0;
  103.     switch( IPC_GET_METHOD( * call )){
  104.         case IPC_M_PHONE_HUNGUP:
  105.             return EOK;
  106.         case NET_NETIF_PROBE_AUTO:
  107.             rwlock_write_lock( & netif_globals.lock );
  108.             ERROR_CODE = probe_auto_message();
  109.             rwlock_write_unlock( & netif_globals.lock );
  110.             return ERROR_CODE;
  111.         case NET_NETIF_PROBE:
  112.             rwlock_write_lock( & netif_globals.lock );
  113.             ERROR_CODE = probe_message( IPC_GET_DEVICE( call ), IPC_GET_IRQ( call ), IPC_GET_IO( call ));
  114.             rwlock_write_unlock( & netif_globals.lock );
  115.             return ERROR_CODE;
  116.         case IPC_M_CONNECT_TO_ME:
  117.             rwlock_write_lock( & netif_globals.lock );
  118.             ERROR_CODE = register_message( IPC_GET_DEVICE( call ), IPC_GET_PHONE( call ));
  119.             rwlock_write_unlock( & netif_globals.lock );
  120.             return ERROR_CODE;
  121.         case NET_NETIF_SEND:
  122.             rwlock_write_lock( & netif_globals.lock );
  123.             if( ! ERROR_OCCURRED( packet_translate( netif_globals.networking_phone, & packet, IPC_GET_PACKET( call )))){
  124.                 ERROR_CODE = send_message( IPC_GET_DEVICE( call ), packet );
  125.             }
  126.             rwlock_write_unlock( & netif_globals.lock );
  127.             return ERROR_CODE;
  128.         case NET_NETIF_START:
  129.             rwlock_write_lock( & netif_globals.lock );
  130.             ERROR_CODE = start_message( IPC_GET_DEVICE( call ));
  131.             rwlock_write_unlock( & netif_globals.lock );
  132.             return ERROR_CODE;
  133.         case NET_NETIF_STATS:
  134.             rwlock_read_lock( & netif_globals.lock );
  135.             if( ! ERROR_OCCURRED( ipc_data_read_receive( & callid, & length ))){
  136.                 if( length < sizeof( device_stats_t )){
  137.                     ERROR_CODE = EOVERFLOW;
  138.                 }else{
  139.                     if( ! ERROR_OCCURRED( get_device_stats( IPC_GET_DEVICE( call ), & stats ))){
  140.                         ERROR_CODE = ipc_data_read_finalize( callid, & stats, sizeof( device_stats_t ));
  141.                     }
  142.                 }
  143.             }
  144.             rwlock_read_unlock( & netif_globals.lock );
  145.             return ERROR_CODE;
  146.         case NET_NETIF_STOP:
  147.             rwlock_write_lock( & netif_globals.lock );
  148.             ERROR_CODE = stop_message( IPC_GET_DEVICE( call ));
  149.             rwlock_write_unlock( & netif_globals.lock );
  150.             return ERROR_CODE;
  151.         case NET_NETIF_GET_ADDR:
  152.             rwlock_read_lock( & netif_globals.lock );
  153.             if( ! ERROR_OCCURRED( get_addr_message( IPC_GET_DEVICE( call ), & address ))){
  154.                 ERROR_CODE = measured_strings_reply( & address, 1 );
  155.             }
  156.             rwlock_read_unlock( & netif_globals.lock );
  157.             return ERROR_CODE;
  158.     }
  159.     return specific_message( callid, call, answer, answer_count );
  160. }
  161.  
  162. int netif_start_module( async_client_conn_t client_connection ){
  163.     ERROR_DECLARE;
  164.  
  165.     async_set_client_connection( client_connection );
  166.     netif_globals.networking_phone = connect_to_service( SERVICE_NETWORKING );
  167.     device_map_initialize( & netif_globals.device_map );
  168.     ERROR_PROPAGATE( pm_init());
  169.     rwlock_initialize( & netif_globals.lock );
  170.     if( ERROR_OCCURRED( initialize())){
  171.         pm_destroy();
  172.         return ERROR_CODE;
  173.     }
  174.  
  175.     async_manager();
  176.  
  177.     pm_destroy();
  178.     return EOK;
  179. }
  180.  
  181. void netif_pq_release( packet_id_t packet_id ){
  182.     pq_release( netif_globals.networking_phone, packet_id );
  183. }
  184.  
  185. packet_t netif_packet_get_1( size_t content ){
  186.     return packet_get_1( netif_globals.networking_phone, content );
  187. }
  188.  
  189. /** @}
  190.  */
  191.