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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 "../include/device.h"
  53. #include "../include/netif_messages.h"
  54. #include "../include/nil_messages.h"
  55.  
  56. #include "netif.h"
  57. #include "netif_interface.h"
  58. #include "netif_wrappers.h"
  59.  
  60. #if NIL_BUNDLE
  61.  
  62.     #include "../nil/nil_module.h"
  63.  
  64. #endif
  65.  
  66. extern netif_globals_t netif_globals;
  67.  
  68. DEVICE_MAP_IMPLEMENT( device_map, device_t )
  69.  
  70. int module_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count );
  71. int netif_start_module( async_client_conn_t client_connection );
  72. int register_message( device_id_t device_id, int phone );
  73.  
  74. int netif_probe_wrapper( device_id_t device_id, int irq, int io ){
  75.     int result;
  76.  
  77.     rwlock_write_lock( & netif_globals.lock );
  78.     result = netif_probe_message( device_id, irq, io );
  79.     rwlock_write_unlock( & netif_globals.lock );
  80.     return result;
  81. }
  82.  
  83. int netif_send_wrapper( device_id_t device_id, packet_t packet, services_t sender ){
  84.     int result;
  85.  
  86.     rwlock_write_lock( & netif_globals.lock );
  87.     result = netif_send_message( device_id, packet, sender );
  88.     rwlock_write_unlock( & netif_globals.lock );
  89.     return result;
  90. }
  91.  
  92. int netif_start_wrapper( device_id_t device_id ){
  93.     ERROR_DECLARE;
  94.  
  95.     device_ref  device;
  96.     int result;
  97.     int phone;
  98.  
  99.     rwlock_write_lock( & netif_globals.lock );
  100.     if( ERROR_OCCURRED( find_device( device_id, & device ))){
  101.         rwlock_write_unlock( & netif_globals.lock );
  102.         return ERROR_CODE;
  103.     }
  104.     result = netif_start_message( device );
  105.     if( result > NETIF_NULL ){
  106.         phone = device->nil_phone;
  107.         rwlock_write_unlock( & netif_globals.lock );
  108.         nil_device_state_msg( phone, device_id, result );
  109.         return EOK;
  110.     }else{
  111.         rwlock_write_unlock( & netif_globals.lock );
  112.     }
  113.     return result;
  114. }
  115.  
  116. int netif_stop_wrapper( device_id_t device_id ){
  117.     ERROR_DECLARE;
  118.  
  119.     device_ref  device;
  120.     int result;
  121.     int phone;
  122.  
  123.     rwlock_write_lock( & netif_globals.lock );
  124.     if( ERROR_OCCURRED( find_device( device_id, & device ))){
  125.         rwlock_write_unlock( & netif_globals.lock );
  126.         return ERROR_CODE;
  127.     }
  128.     result = netif_stop_message( device );
  129.     if( result > NETIF_NULL ){
  130.         phone = device->nil_phone;
  131.         rwlock_write_unlock( & netif_globals.lock );
  132.         nil_device_state_msg( phone, device_id, result );
  133.         return EOK;
  134.     }else{
  135.         rwlock_write_unlock( & netif_globals.lock );
  136.     }
  137.     return result;
  138. }
  139.  
  140. int netif_get_addr_wrapper( device_id_t device_id, measured_string_ref * address, char ** data ){
  141.     ERROR_DECLARE;
  142.  
  143.     measured_string_t   translation;
  144.  
  145.     if( !( address && data )) return EBADMEM;
  146.     rwlock_read_lock( & netif_globals.lock );
  147.     if( ! ERROR_OCCURRED( netif_get_addr_message( device_id, & translation ))){
  148.         * address = measured_string_copy( & translation );
  149.         ERROR_CODE = ( * address ) ? EOK : ENOMEM;
  150.     }
  151.     rwlock_read_unlock( & netif_globals.lock );
  152.     return ERROR_CODE;
  153. }
  154.  
  155. int find_device( device_id_t device_id, device_ref * device ){
  156.     if( ! device ) return EBADMEM;
  157.     * device = device_map_find( & netif_globals.device_map, device_id );
  158.     if( ! * device ) return ENOENT;
  159.     if(( ** device ).state == NETIF_NULL ) return EPERM;
  160.     return EOK;
  161. }
  162.  
  163. void null_device_stats( device_stats_ref stats ){
  164.     bzero( stats, sizeof( device_stats_t ));
  165. }
  166.  
  167. int register_message( device_id_t device_id, int phone ){
  168.     ERROR_DECLARE;
  169.  
  170.     device_ref  device;
  171.  
  172.     ERROR_PROPAGATE( find_device( device_id, & device ));
  173.     if( device->nil_phone > 0 ) return ELIMIT;
  174.     device->nil_phone = phone;
  175.     printf( "\nNew receiver of the device %d registered:\n\tphone\t= %d", device->device_id, device->nil_phone );
  176.     return EOK;
  177. }
  178.  
  179. int netif_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){
  180.     ERROR_DECLARE;
  181.  
  182.     size_t              length;
  183.     device_stats_t      stats;
  184.     packet_t            packet;
  185.     measured_string_t   address;
  186.  
  187. //  printf( "\nmessage %d - %d", IPC_GET_METHOD( * call ), NET_NETIF_FIRST );
  188. #if NIL_BUNDLE
  189.     if( IS_NET_NIL_MESSAGE( call )){
  190.         return nil_message( callid, call, answer, answer_count );
  191.     }
  192. #endif
  193.     * answer_count = 0;
  194.     switch( IPC_GET_METHOD( * call )){
  195.         case IPC_M_PHONE_HUNGUP:
  196.             return EOK;
  197.         case NET_NETIF_PROBE_AUTO:
  198.             rwlock_write_lock( & netif_globals.lock );
  199.             ERROR_CODE = netif_probe_auto_message();
  200.             rwlock_write_unlock( & netif_globals.lock );
  201.             return ERROR_CODE;
  202.         case NET_NETIF_PROBE:
  203.             return netif_probe_wrapper( IPC_GET_DEVICE( call ), NETIF_GET_IRQ( call ), NETIF_GET_IO( call ));
  204.         case IPC_M_CONNECT_TO_ME:
  205. #if NIL_BUNDLE
  206.             return nil_register_message( NIL_GET_PROTO( call ), IPC_GET_PHONE( call ));
  207. #else
  208.             rwlock_write_lock( & netif_globals.lock );
  209.             ERROR_CODE = register_message( IPC_GET_DEVICE( call ), IPC_GET_PHONE( call ));
  210.             rwlock_write_unlock( & netif_globals.lock );
  211.             return ERROR_CODE;
  212. #endif
  213.         case NET_NETIF_SEND:
  214.         case NET_NIL_SEND:
  215.             ERROR_PROPAGATE( packet_translate( netif_globals.networking_phone, & packet, IPC_GET_PACKET( call )));
  216.             return netif_send_wrapper( IPC_GET_DEVICE( call ), packet, IPC_GET_SENDER( call ));
  217.         case NET_NETIF_START:
  218.             return netif_start_wrapper( IPC_GET_DEVICE( call ));
  219.         case NET_NETIF_STATS:
  220.             rwlock_read_lock( & netif_globals.lock );
  221.             if( ! ERROR_OCCURRED( ipc_data_read_receive( & callid, & length ))){
  222.                 if( length < sizeof( device_stats_t )){
  223.                     ERROR_CODE = EOVERFLOW;
  224.                 }else{
  225.                     if( ! ERROR_OCCURRED( netif_get_device_stats( IPC_GET_DEVICE( call ), & stats ))){
  226.                         ERROR_CODE = ipc_data_read_finalize( callid, & stats, sizeof( device_stats_t ));
  227.                     }
  228.                 }
  229.             }
  230.             rwlock_read_unlock( & netif_globals.lock );
  231.             return ERROR_CODE;
  232.         case NET_NETIF_STOP:
  233.             return netif_stop_wrapper( IPC_GET_DEVICE( call ));
  234.         case NET_NETIF_GET_ADDR:
  235.         case NET_NIL_ADDR:
  236.             rwlock_read_lock( & netif_globals.lock );
  237.             if( ! ERROR_OCCURRED( netif_get_addr_message( IPC_GET_DEVICE( call ), & address ))){
  238.                 ERROR_CODE = measured_strings_reply( & address, 1 );
  239.             }
  240.             rwlock_read_unlock( & netif_globals.lock );
  241.             return ERROR_CODE;
  242.     }
  243.     return netif_specific_message( callid, call, answer, answer_count );
  244. }
  245.  
  246. int netif_start_module( async_client_conn_t client_connection ){
  247.     ERROR_DECLARE;
  248.  
  249.     async_set_client_connection( client_connection );
  250.     netif_globals.networking_phone = connect_to_service( SERVICE_NETWORKING );
  251.     device_map_initialize( & netif_globals.device_map );
  252.     ERROR_PROPAGATE( pm_init());
  253.     rwlock_initialize( & netif_globals.lock );
  254.     if( ERROR_OCCURRED( netif_initialize())){
  255.         pm_destroy();
  256.         return ERROR_CODE;
  257.     }
  258. #if NIL_BUNDLE
  259.     if( ERROR_OCCURRED( nil_initialize( netif_globals.networking_phone ))){
  260.         pm_destroy();
  261.         return ERROR_CODE;
  262.     }
  263. #endif
  264.  
  265.     async_manager();
  266.  
  267.     pm_destroy();
  268.     return EOK;
  269. }
  270.  
  271. void netif_pq_release( packet_id_t packet_id ){
  272.     pq_release( netif_globals.networking_phone, packet_id );
  273. }
  274.  
  275. packet_t netif_packet_get_1( size_t content ){
  276.     return packet_get_1( netif_globals.networking_phone, content );
  277. }
  278.  
  279. /** @}
  280.  */
  281.