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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
  30.  * @{
  31.  */
  32.  
  33. /** @file
  34.  */
  35.  
  36. #include <async.h>
  37. #include <ctype.h>
  38. #include <errno.h>
  39. #include <malloc.h>
  40. #include <stdio.h>
  41. #include <task.h>
  42. #include <unistd.h>
  43.  
  44. #include <ipc/ipc.h>
  45. #include <ipc/services.h>
  46.  
  47. #include "../err.h"
  48. #include "../messages.h"
  49. #include "../modules.h"
  50. //#include "../self_test.h"
  51.  
  52. #include "../structures/char_map.h"
  53. #include "../structures/generic_char_map.h"
  54. #include "../structures/measured_strings.h"
  55.  
  56. #include "../il/ip/ip_messages.h"
  57. #include "../netif/device.h"
  58.  
  59. #if IP_BUNDLE
  60.  
  61.     #include "../ip/ip_module.h"
  62.  
  63. #endif
  64.  
  65. #if TCP_BUNDLE
  66.  
  67.     #include "../tcp/tcp_module.h"
  68.  
  69. #endif
  70.  
  71. #define LO_NAME             "lo"
  72. #define LO_FILENAME         "/sbin/lo"
  73. #define DP8390_ISA_NAME         "dp8390_isa"
  74. #define DP8390_ISA_FILENAME     "/sbin/dp8380_isa"
  75. #define ETHERNET_NAME           "ethernet"
  76. #define ETHERNET_FILENAME       "/sbin/ethernet"
  77. #define IP_NAME             "ip"
  78. #define IP_FILENAME         "/sbin/ip"
  79.  
  80. typedef struct module_struct    module_t;
  81. typedef module_t *      module_ref;
  82.  
  83. typedef struct netif        netif_t;
  84. typedef netif_t *       netif_ref;
  85.  
  86. typedef struct networking_globals   networking_globals_t;
  87.  
  88. DEVICE_MAP_DECLARE( netifs, netif_t )
  89.  
  90. GENERIC_CHAR_MAP_DECLARE( measured_strings, measured_string_t )
  91.  
  92. GENERIC_CHAR_MAP_DECLARE( modules, module_t )
  93.  
  94. struct module_struct{
  95.     task_id_t   task_id;
  96.     services_t  service;
  97.     int     phone;
  98.     int     usage;
  99.     const char *    name;
  100.     const char *    filename;
  101. };
  102.  
  103. /** A present network interface device.
  104.  */
  105. struct netif{
  106.     /** A system-unique network interface identifier.
  107.      */
  108.     device_id_t     id;
  109.     /** A serving network interface driver module index.
  110.      */
  111.     module_ref      driver;
  112.     /** A serving link layer module index.
  113.      */
  114.     module_ref      nil;
  115.     /** A serving internet layer module index.
  116.      */
  117.     module_ref      il;
  118.     /** A system-unique network interface name.
  119.      */
  120.     char *          name;
  121.     /** Configuration.
  122.      */
  123.     measured_strings_t  configuration;
  124. };
  125.  
  126. /** A networking module global variables.
  127.  */
  128. struct networking_globals{
  129.     /** Present network interfaces.
  130.      */
  131.     netifs_t        netifs;
  132.     /** Network interface structure indices by names.
  133.      */
  134.     char_map_t      netif_names;
  135.     /** Available modules.
  136.      */
  137.     modules_t       modules;
  138.     /** Global configuration.
  139.      */
  140.     measured_strings_t  configuration;
  141. };
  142.  
  143. int     add_module( module_ref * module, modules_ref modules, const char const * name, const char const * filename, services_t service, task_id_t task_id );
  144. static void client_connection( ipc_callid_t iid, ipc_call_t * icall );
  145. measured_string_ref configuration_find( measured_strings_ref configuration, const char * name );
  146. int     main( int argc, char * argv[] );
  147. int     networking_initialize( void );
  148. int     networking_message( ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2, ipcarg_t arg3, ipcarg_t * result1, ipcarg_t * result2, ipcarg_t * result3 );
  149. //int       parse_line( measured_strings_ref configuration, char * line );
  150. int     add_configuration( measured_strings_ref configuration, const char * name, const char * value );
  151. int     read_configuration( void );
  152. task_id_t   spawn( const char * fname );
  153. int     startup( void );
  154. device_id_t generate_new_device_id( void );
  155.  
  156. static networking_globals_t networking_globals;
  157.  
  158. DEVICE_MAP_IMPLEMENT( netifs, netif_t )
  159.  
  160. GENERIC_CHAR_MAP_IMPLEMENT( measured_strings, measured_string_t )
  161.  
  162. GENERIC_CHAR_MAP_IMPLEMENT( modules, module_t )
  163.  
  164. int add_module( module_ref * module, modules_ref modules, const char * name, const char * filename, services_t service, task_id_t task_id ){
  165.     ERROR_DECLARE;
  166.  
  167.     module_ref  tmp_module;
  168.  
  169.     tmp_module = ( module_ref ) malloc( sizeof( module_t ));
  170.     if( ! tmp_module ) return ENOMEM;
  171.     tmp_module->task_id = task_id;
  172.     tmp_module->phone = 0;
  173.     tmp_module->usage = 0;
  174.     tmp_module->name = name;
  175.     tmp_module->filename = filename;
  176.     tmp_module->service = service;
  177.     if( ERROR_OCCURED( modules_add( modules, tmp_module->name, 0, tmp_module ))){
  178.         free( tmp_module );
  179.         return ERROR_CODE;
  180.     }
  181.     if( module ) * module = tmp_module;
  182.     return EOK;
  183. }
  184.  
  185. static void client_connection( ipc_callid_t iid, ipc_call_t * icall ){
  186.     ipc_callid_t    callid;
  187.     ipc_call_t  call;
  188.     ipcarg_t    arg1, arg2, arg3;
  189.     int     res;
  190.  
  191.     /*
  192.      * Accept the connection
  193.      *  - Answer the first IPC_M_CONNECT_ME_TO call.
  194.      */
  195. //  printf( "\nNET-%d got %d on %x from %x", fibril_get_id(), IPC_GET_METHOD( * icall ), icall->in_phone_hash, iid );
  196.     ipc_answer_0( iid, EOK );
  197.  
  198.     while( true ){
  199.         callid = async_get_call( & call );
  200.         arg1 = 0;
  201.         arg2 = 0;
  202.         arg3 = 0;
  203. //      printf( "\nNET-%d got %d on %x from %x", fibril_get_id(), IPC_GET_METHOD( call ), call.in_phone_hash, callid );
  204. #ifdef NETWORKING_module
  205.         if( IS_NET_IL_MESSAGE( call ) || IS_NET_IP_MESSAGE( call )){
  206.             res = ip_message( IPC_GET_METHOD( call ), IPC_GET_ARG1( call ), IPC_GET_ARG2( call ), IPC_GET_ARG3( call ), & arg1, & arg2, & arg3 );
  207. /*      }else if( IS_NET_ARP_MESSAGE( call )){
  208.             res = arp_message( IPC_GET_METHOD( call ), IPC_GET_ARG1( call ), IPC_GET_ARG2( call ), IPC_GET_ARG3( call ), & arg1, & arg2, & arg3 );
  209. *//*        }else if( IS_NET_RARP_MESSAGE( call )){
  210.             res = rarp_message( IPC_GET_METHOD( call ), IPC_GET_ARG1( call ), IPC_GET_ARG2( call ), IPC_GET_ARG3( call ), & arg1, & arg2, & arg3 );
  211. *//*        }else if( IS_NET_ICMP_MESSAGE( call )){
  212.             res = icmp_message( IPC_GET_METHOD( call ), IPC_GET_ARG1( call ), IPC_GET_ARG2( call ), IPC_GET_ARG3( call ), & arg1, & arg2, & arg3 );
  213. *//*        }else if( IS_NET_UDP_MESSAGE( call )){
  214.             res = udp_message( IPC_GET_METHOD( call ), IPC_GET_ARG1( call ), IPC_GET_ARG2( call ), IPC_GET_ARG3( call ), & arg1, & arg2, & arg3 );
  215. */      }else if( IS_NET_TCP_MESSAGE( call )){
  216.             res = tcp_message( IPC_GET_METHOD( call ), IPC_GET_ARG1( call ), IPC_GET_ARG2( call ), IPC_GET_ARG3( call ), & arg1, & arg2, & arg3 );
  217. /*      }else if( IS_NET_SOCKET_MESSAGE( call )){
  218.             res = socket_message( IPC_GET_METHOD( call ), IPC_GET_ARG1( call ), IPC_GET_ARG2( call ), IPC_GET_ARG3( call ), & arg1, & arg2, & arg3 );
  219. *//*        }else if( IS_NET_NIL_MESSAGE( call ) || IS_NET_ETHERNET_MESSAGE( call )){
  220.             res = ethernet_message( IPC_GET_METHOD( call ), IPC_GET_ARG1( call ), IPC_GET_ARG2( call ), IPC_GET_ARG3( call ), & arg1, & arg2, & arg3 );
  221. */      }else{
  222. #endif
  223.             res = networking_message( IPC_GET_METHOD( call ), IPC_GET_ARG1( call ), IPC_GET_ARG2( call ), IPC_GET_ARG3( call ), & arg1, & arg2, & arg3 );
  224. #ifdef NETWORKING_module
  225.         }
  226. #endif
  227.         ipc_answer_2( callid, res, arg1, arg2 );
  228.     }
  229. }
  230.  
  231. int main( int argc, char * argv[] ){
  232.     ERROR_DECLARE;
  233.  
  234.     ipcarg_t    phonehash;
  235.  
  236.     printf("\nTask %d - HelenOS Networking subsystem", task_get_id());
  237.  
  238.     async_set_client_connection( client_connection );
  239.     ERROR_PROPAGATE( networking_initialize());
  240.     ERROR_PROPAGATE( REGISTER_ME( SERVICE_NETWORKING, & phonehash ));
  241.  
  242.     async_manager();
  243.  
  244.     return EOK;
  245. }
  246.  
  247. int networking_initialize( void ){
  248.     ERROR_DECLARE;
  249.  
  250.     task_id_t   task_id;
  251.  
  252.     netifs_initialize( & networking_globals.netifs );
  253.     char_map_initialize( & networking_globals.netif_names );
  254.     modules_initialize( & networking_globals.modules );
  255.     measured_strings_initialize( & networking_globals.configuration );
  256.  
  257.     // run self tests
  258. //  ERROR_PROPAGATE( self_test());
  259.  
  260.     ERROR_PROPAGATE( add_module( NULL, & networking_globals.modules, LO_NAME, LO_FILENAME, SERVICE_LO, 0 ));
  261.     ERROR_PROPAGATE( add_module( NULL, & networking_globals.modules, DP8390_ISA_NAME, DP8390_ISA_FILENAME, SERVICE_DP8390_ISA, 0 ));
  262.     ERROR_PROPAGATE( add_module( NULL, & networking_globals.modules, ETHERNET_NAME, ETHERNET_FILENAME, SERVICE_ETHERNET, 0 ));
  263.  
  264. #ifdef NETWORKING_modular
  265.     task_id = spawn( "/sbin/ip" );
  266.     if( ! task_id ) return EINVAL;
  267.     ERROR_PROPAGATE( add_module( NULL, & networking_globals.modules, IP_NAME, IP_FILENAME, SERVICE_IP, task_id ));
  268. //  if( ! spawn( "/sbin/udp" )) return EINVAL;
  269.     if( ! spawn( "/sbin/tcp" )) return EINVAL;
  270. //  if( ! spawn( "/sbin/socket" )) return EINVAL;
  271. //  not always necesssary
  272. //  if( ! spawn( "/sbin/arp" )) return EINVAL;
  273. //  if( ! spawn( "/sbin/rarp" )) return EINVAL;
  274. //  if( ! spawn( "/sbin/icmp" )) return EINVAL;
  275.  
  276. #else
  277. #ifdef NETWORKING_module
  278.     ipcarg_t    phonehash;
  279.  
  280.     ERROR_PROPAGATE( REGISTER_ME( SERVICE_IP, & phonehash ));
  281.     ERROR_PROPAGATE( add_module( NULL, & networking_globals.modules, IP_NAME, IP_FILENAME, SERVICE_IP, task_get_id()));
  282.     ERROR_PROPAGATE( ip_initialize());
  283. //  ERROR_PROPAGATE( REGISTER_ME( SERVICE_ARP, & phonehash ));
  284. //  ERROR_PROPAGATE( arp_initialize());
  285. //  ERROR_PROPAGATE( REGISTER_ME( SERVICE_RARP, & phonehash ));
  286. //  ERROR_PROPAGATE( rarp_initialize());
  287. //  ERROR_PROPAGATE( REGISTER_ME( SERVICE_ICMP, & phonehash ));
  288. //  ERROR_PROPAGATE( icmp_initialize());
  289. //  ERROR_PROPAGATE( REGISTER_ME( SERVICE_UDP, & phonehash ));
  290. //  ERROR_PROPAGATE( udp_initialize());
  291.     ERROR_PROPAGATE( REGISTER_ME( SERVICE_TCP, & phonehash ));
  292.     ERROR_PROPAGATE( tcp_initialize());
  293. //  ERROR_PROPAGATE( REGISTER_ME( SERVICE_SOCKET, & phonehash ));
  294. //  ERROR_PROPAGATE( socket_initialize());
  295. //  ERROR_PROPAGATE( REGISTER_ME( SERVICE_ETHERNET, & phonehash ));
  296. //  ERROR_PROPAGATE( ethernet_initialize());
  297. #endif
  298. #endif
  299.  
  300.     return EOK;
  301. }
  302.  
  303. int networking_message( ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2, ipcarg_t arg3, ipcarg_t * result1, ipcarg_t * result2, ipcarg_t * result3 ){
  304.     ERROR_DECLARE;
  305.  
  306.     measured_string_ref strings;
  307.     char *          data;
  308.     int         index;
  309.     measured_string_ref setting;
  310.     measured_strings_ref    configuration;
  311.     netif_ref       netif;
  312.  
  313.     switch( method ){
  314.         case IPC_M_PHONE_HUNGUP:
  315.             return EOK;
  316.         case NET_NET_DEVICE:
  317.             // TODO configure, register
  318.             // arg1 = netif id
  319.             printf( "\nNetworking: new netif %d", arg1 );
  320.             return EOK;
  321.         case NET_NET_GET_DEVICE_CONF:
  322.             // arg1 = netif id
  323.             // arg2 = count
  324.             ERROR_PROPAGATE( measured_strings_receive( & strings, & data, arg2 ));
  325.             netif = netifs_find( & networking_globals.netifs, arg1 );
  326.             if( netif ){
  327.                 configuration = & netif->configuration;
  328.             }else{
  329.                 configuration = NULL;
  330.             }
  331.             for( index = 0; index < arg2; ++ index ){
  332.                 setting = measured_strings_find( configuration, strings[ index ].value, 0 );
  333.                 if( ! setting ){
  334.                     setting = measured_strings_find( & networking_globals.configuration, strings[ index ].value, 0 );
  335.                 }
  336.                 if( setting ){
  337.                     strings[ index ].length = setting->length;
  338.                     strings[ index ].value = setting->value;
  339.                 }else{
  340.                     strings[ index ].length = 0;
  341.                     strings[ index ].value = NULL;
  342.                 }
  343.             }
  344.             // strings should not contain received data anymore
  345.             free( data );
  346.             ERROR_CODE = measured_strings_reply( strings, arg2 );
  347.             free( strings );
  348.             return ERROR_CODE;
  349.         case NET_NET_GET_CONF:
  350.             // arg1 = count
  351.             ERROR_PROPAGATE( measured_strings_receive( & strings, & data, arg1 ));
  352.             for( index = 0; index < arg1; ++ index ){
  353.                 setting = measured_strings_find( & networking_globals.configuration, strings[ index ].value, 0 );
  354.                 if( setting ){
  355.                     strings[ index ].length = setting->length;
  356.                     strings[ index ].value = setting->value;
  357.                 }else{
  358.                     strings[ index ].length = 0;
  359.                     strings[ index ].value = NULL;
  360.                 }
  361.             }
  362.             // strings should not contain received data anymore
  363.             free( data );
  364.             ERROR_CODE = measured_strings_reply( strings, arg1 );
  365.             free( strings );
  366.             return ERROR_CODE;
  367.         case NET_NET_STARTUP:
  368.             return startup();
  369.     }
  370.     return ENOTSUP;
  371. }
  372.  
  373. /*
  374. int parse_line( measured_strings_ref configuration, char * line ){
  375.     ERROR_DECLARE;
  376.  
  377.     measured_string_ref setting;
  378.     char *          name;
  379.     char *          value;
  380.  
  381.     // from the beginning
  382.     name = line;
  383.     // skip spaces
  384.     while( isspace( * name )) ++ name;
  385.     // remember the name start
  386.     value = name;
  387.     // skip the name
  388.     while( isalnum( * value ) || ( * value == '_' )){
  389.         // make uppercase
  390. //      * value = toupper( * value );
  391.         ++ value;
  392.     }
  393.     if( * value == '=' ){
  394.         // terminate the name
  395.         * value = '\0';
  396.     }else{
  397.         // terminate the name
  398.         * value = '\0';
  399.         // skip until '='
  400.         ++ value;
  401.         while(( * value ) && ( * value != '=' )) ++ value;
  402.         // not found?
  403.         if( * value != '=' ) return EINVAL;
  404.     }
  405.     ++ value;
  406.     // skip spaces
  407.     while( isspace( * value )) ++ value;
  408.     // create a bulk measured string till the end
  409.     setting = measured_string_create_bulk( value, -1 );
  410.     if( ! setting ) return ENOMEM;
  411.     // add the configuration setting
  412.     if( ERROR_OCCURED( measured_strings_add( configuration, name, 0, setting ))){
  413.         free( setting );
  414.         return ERROR_CODE;
  415.     }
  416.     return EOK;
  417. }
  418. */
  419.  
  420. int add_configuration( measured_strings_ref configuration, const char * name, const char * value ){
  421.     ERROR_DECLARE;
  422.  
  423.     measured_string_ref setting;
  424.  
  425.     setting = measured_string_create_bulk( value, 0 );
  426.     if( ! setting ) return ENOMEM;
  427.     // add the configuration setting
  428.     if( ERROR_OCCURED( measured_strings_add( configuration, name, 0, setting ))){
  429.         free( setting );
  430.         return ERROR_CODE;
  431.     }
  432.     return EOK;
  433. }
  434.  
  435. device_id_t generate_new_device_id( void ){
  436.     return netifs_count( & networking_globals.netifs ) + 1;
  437. }
  438.  
  439. int read_configuration( void ){
  440.     ERROR_DECLARE;
  441.  
  442.     netif_ref       netif;
  443.     measured_string_ref setting;
  444.     services_t      internet_service;
  445.     int         index;
  446.  
  447.     // read general configuration
  448.     ERROR_PROPAGATE( add_configuration( & networking_globals.configuration, "IPV", "4" ));
  449.  
  450.     // read network interfaces configuration
  451.  
  452.     // static loopback initialization
  453. //  printf( "\nloopback initialization" );
  454.     netif = ( netif_ref ) malloc( sizeof( netif_t ));
  455.     if( ! netif ) return ENOMEM;
  456.     netif->id = generate_new_device_id();
  457.     ERROR_PROPAGATE( measured_strings_initialize( & netif->configuration ));
  458.     if( ERROR_OCCURED( add_configuration( & netif->configuration, "NAME", LO_NAME ))
  459.     || ERROR_OCCURED( add_configuration( & netif->configuration, "NETIF", LO_NAME ))
  460.     || ERROR_OCCURED( add_configuration( & netif->configuration, "IL", IP_NAME ))
  461.     || ERROR_OCCURED( add_configuration( & netif->configuration, "MTU", "1500" ))
  462.     || ERROR_OCCURED( add_configuration( & netif->configuration, "IP_CONFIG", "STATIC" ))
  463.     || ERROR_OCCURED( add_configuration( & netif->configuration, "IP_ADDR", "127.0.0.1" ))
  464.     || ERROR_OCCURED( add_configuration( & netif->configuration, "NETMASK", "255.0.0.0" ))){
  465.         measured_strings_destroy( & netif->configuration );
  466.         free( netif );
  467.         return ERROR_CODE;
  468.     }
  469.     // mandatory name
  470. //  printf( "\n\tname" );
  471.     setting = measured_strings_find( & netif->configuration, "NAME", 0 );
  472.     if( ! setting ){
  473.         measured_strings_destroy( & netif->configuration );
  474.         free( netif );
  475.         return EINVAL;
  476.     }
  477.     netif->name = setting->value;
  478. //  printf( " %s OK", netif->name );
  479.     // mandatory netif
  480. //  printf( "\n\tnetif" );
  481.     setting = measured_strings_find( & netif->configuration, "NETIF", 0 );
  482.     if( ! setting ){
  483. //      printf( " unknown" );
  484.         measured_strings_destroy( & netif->configuration );
  485.         free( netif );
  486.         return EINVAL;
  487.     }
  488. //  printf( " find %s in %d?", setting->value, modules_count( & networking_globals.modules ));
  489.     netif->driver = modules_find( & networking_globals.modules, setting->value, 0 );
  490.     if( ! netif->driver ){
  491. //      printf( " not found" );
  492.         // TODO register the unknown one
  493.         measured_strings_destroy( & netif->configuration );
  494.         free( netif );
  495.         return EINVAL;
  496.     }
  497. //  printf( " found" );
  498.     if( ! netif->driver->task_id ){
  499.         netif->driver->task_id = spawn( netif->driver->filename );
  500.         if( ! netif->driver->task_id ){
  501.             measured_strings_destroy( & netif->configuration );
  502.             free( netif );
  503.             return EINVAL;
  504.         }
  505.     }
  506. //  printf( " OK" );
  507.     // optional link layer
  508. //  printf( "\n\tlink layer" );
  509.     setting = measured_strings_find( & netif->configuration, "NIL", 0 );
  510.     if( setting ){
  511.         netif->nil = modules_find( & networking_globals.modules, setting->value, 0 );
  512.         if( ! netif->nil ){
  513.             // TODO register the unknown one
  514.             -- netif->driver->usage;
  515.             measured_strings_destroy( & netif->configuration );
  516.             free( netif );
  517.             return EINVAL;
  518.         }
  519.         if( ! netif->nil->task_id ){
  520.             netif->nil->task_id = spawn( netif->nil->filename );
  521.             if( ! netif->nil->task_id ){
  522.                 -- netif->driver->usage;
  523.                 measured_strings_destroy( & netif->configuration );
  524.                 free( netif );
  525.                 return EINVAL;
  526.             }
  527.         }
  528.     }else{
  529.         netif->nil = NULL;
  530.     }
  531.     // mandatory internet layer
  532. //  printf( "\n\tinternet layer" );
  533.     setting = measured_strings_find( & netif->configuration, "IL", 0 );
  534.     if( ! setting ){
  535.         -- netif->driver->usage;
  536.         -- netif->nil->usage;
  537.         measured_strings_destroy( & netif->configuration );
  538.         free( netif );
  539.         return EINVAL;
  540.     }
  541. //  printf( " set %s", setting->value );
  542.     netif->il = modules_find( & networking_globals.modules, setting->value, 0 );
  543.     if( ! netif->il ){
  544.         // TODO register the unknown one
  545.         -- netif->driver->usage;
  546.         -- netif->nil->usage;
  547.         measured_strings_destroy( & netif->configuration );
  548.         free( netif );
  549.         return EINVAL;
  550.     }
  551. //  printf( " found" );
  552.     if( ! netif->il->task_id ){
  553.         netif->il->task_id = spawn( netif->il->filename );
  554.         if( ! netif->il->task_id ){
  555.             -- netif->driver->usage;
  556.             -- netif->nil->usage;
  557.             measured_strings_destroy( & netif->configuration );
  558.             free( netif );
  559.             return EINVAL;
  560.         }
  561.     }
  562.     index = netifs_add( & networking_globals.netifs, netif->id, netif );
  563.     if( index < 0 ){
  564.         free( netif );
  565.         return ERROR_CODE;
  566.     }
  567.     if( ERROR_OCCURED( char_map_add( & networking_globals.netif_names, netif->name, 0, index ))){
  568.         netifs_exclude_index( & networking_globals.netifs, index );
  569.         return ERROR_CODE;
  570.     }
  571. //  printf( "\nloopback OK" );
  572.     // end of the static loopback initialization
  573.     // startup the loopback interface
  574.     if( ! netif->driver->phone ){
  575. //      printf( " connect?" );
  576.         netif->driver->phone = connect_to_service( netif->driver->service );
  577.     }
  578. //  printf( " connected" );
  579.     // TODO io, irq
  580.     ERROR_PROPAGATE( async_req_3_0( netif->driver->phone, NET_NETIF_PROBE, netif->id, 0, 0 ));
  581.     ++ netif->driver->usage;
  582.     if( netif->nil ){
  583.         if( ! netif->nil->phone ){
  584.             netif->nil->phone = connect_to_service( netif->nil->service );
  585.         }
  586.         ERROR_PROPAGATE( async_req_2_0( netif->nil->phone, NET_NIL_DEVICE, netif->id, netif->driver->service ));
  587.         ++ netif->nil->usage;
  588.         internet_service = netif->nil->service;
  589. //      printf( " OK" );
  590.     }else{
  591.         internet_service = netif->driver->service;
  592. //      printf( " none" );
  593.     }
  594.     if( ! netif->il->phone ){
  595. //      printf( " connect" );
  596.         netif->il->phone = connect_to_service( netif->il->service );
  597.     }
  598.     // TODO IL_BUNDLE
  599.     ERROR_PROPAGATE( async_req_2_0( netif->il->phone, NET_IL_DEVICE, netif->id, internet_service ));
  600.     ++ netif->il->usage;
  601.     // TODO startup?
  602.     ERROR_PROPAGATE( async_req_1_0( netif->driver->phone, NET_NETIF_START, netif->id ));
  603. //  printf( "\n LO OK" );
  604.     return EOK;
  605. }
  606.  
  607. task_id_t spawn( const char * fname ){
  608.     const char  * argv[ 2 ];
  609.     task_id_t   res;
  610.  
  611. //  printf( "Spawning %s\n", fname );
  612.     argv[ 0 ] = fname;
  613.     argv[ 1 ] = NULL;
  614.     res = task_spawn( fname, argv );
  615.     if( res != 0 ){
  616.         /* Success */
  617.         usleep( 50000 );
  618.     }
  619.     return res;
  620. }
  621.  
  622. int startup( void ){
  623.     ERROR_DECLARE;
  624.  
  625.     // read configuration files
  626.     if( ERROR_OCCURED( read_configuration())) return ERROR_CODE;
  627.  
  628.     // start network interfaces and needed modules
  629. //  start_device( "/sbin/lo", "/sbin/dummy_link_layer" );
  630.     return EOK;
  631. }
  632.  
  633. /** @}
  634.  */
  635.