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3666 mejdrech 1
/*
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 * Copyright (c) 2009 Lukas Mejdrech
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup netif
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 *  @{
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 */
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/** @file
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 *  Network interface module skeleton implementation.
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 *  @see netif.h
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 */
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#include <async.h>
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#include <mem.h>
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#include <fibril_sync.h>
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#include <stdio.h>
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#include <ipc/ipc.h>
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#include <ipc/services.h>
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#include "../err.h"
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#include "../messages.h"
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#include "../modules.h"
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#include "../structures/packet/packet.h"
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#include "../structures/packet/packet_client.h"
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#include "../structures/measured_strings.h"
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#include "../include/device.h"
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#include "../include/netif_interface.h"
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#include "../include/nil_interface.h"
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#include "netif.h"
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#include "netif_messages.h"
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#include "netif_module.h"
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/** Network interface module global data.
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 */
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extern netif_globals_t netif_globals;
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DEVICE_MAP_IMPLEMENT( device_map, device_t )
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/** Registers the device notification receiver, the network interface layer module.
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 *  @param device_id The device identifier. Input parameter.
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 *  @param phone The network interface layer module phone. Input parameter.
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 *  @returns EOK on success.
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 *  @returns ENOENT if there is no such device.
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 *  @returns ELIMIT if there is another module registered.
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 */
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int register_message( device_id_t device_id, int phone );
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int netif_probe_req( int netif_phone, device_id_t device_id, int irq, int io ){
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    int result;
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    fibril_rwlock_write_lock( & netif_globals.lock );
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    result = netif_probe_message( device_id, irq, io );
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    fibril_rwlock_write_unlock( & netif_globals.lock );
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    return result;
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}
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int netif_send_msg( int netif_phone, device_id_t device_id, packet_t packet, services_t sender ){
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    int result;
88
 
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    fibril_rwlock_write_lock( & netif_globals.lock );
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    result = netif_send_message( device_id, packet, sender );
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    fibril_rwlock_write_unlock( & netif_globals.lock );
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    return result;
93
}
94
 
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int netif_start_req( int netif_phone, device_id_t device_id ){
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    ERROR_DECLARE;
97
 
98
    device_ref  device;
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    int result;
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    int phone;
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    fibril_rwlock_write_lock( & netif_globals.lock );
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    if( ERROR_OCCURRED( find_device( device_id, & device ))){
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        fibril_rwlock_write_unlock( & netif_globals.lock );
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        return ERROR_CODE;
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    }
107
    result = netif_start_message( device );
108
    if( result > NETIF_NULL ){
109
        phone = device->nil_phone;
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        fibril_rwlock_write_unlock( & netif_globals.lock );
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        nil_device_state_msg( phone, device_id, result );
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        return EOK;
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    }else{
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        fibril_rwlock_write_unlock( & netif_globals.lock );
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    }
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    return result;
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}
118
 
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int netif_stop_req( int netif_phone, device_id_t device_id ){
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    ERROR_DECLARE;
121
 
122
    device_ref  device;
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    int result;
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    int phone;
4243 mejdrech 125
 
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    fibril_rwlock_write_lock( & netif_globals.lock );
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    if( ERROR_OCCURRED( find_device( device_id, & device ))){
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        fibril_rwlock_write_unlock( & netif_globals.lock );
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        return ERROR_CODE;
130
    }
131
    result = netif_stop_message( device );
132
    if( result > NETIF_NULL ){
133
        phone = device->nil_phone;
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        fibril_rwlock_write_unlock( & netif_globals.lock );
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        nil_device_state_msg( phone, device_id, result );
136
        return EOK;
137
    }else{
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        fibril_rwlock_write_unlock( & netif_globals.lock );
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    }
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    return result;
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}
142
 
4307 mejdrech 143
int netif_get_addr( int netif_phone, device_id_t device_id, measured_string_ref * address, char ** data ){
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    ERROR_DECLARE;
145
 
146
    measured_string_t   translation;
147
 
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    if( !( address && data )) return EBADMEM;
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    fibril_rwlock_read_lock( & netif_globals.lock );
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    if( ! ERROR_OCCURRED( netif_get_addr_message( device_id, & translation ))){
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        * address = measured_string_copy( & translation );
152
        ERROR_CODE = ( * address ) ? EOK : ENOMEM;
4243 mejdrech 153
    }
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    fibril_rwlock_read_unlock( & netif_globals.lock );
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    * data = ( ** address ).value;
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    return ERROR_CODE;
157
}
158
 
4307 mejdrech 159
int netif_bind_service( services_t service, device_id_t device_id, services_t me, async_client_conn_t receiver ){
160
    return EOK;
161
}
162
 
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int find_device( device_id_t device_id, device_ref * device ){
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    if( ! device ) return EBADMEM;
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    * device = device_map_find( & netif_globals.device_map, device_id );
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    if( ! * device ) return ENOENT;
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    if(( ** device ).state == NETIF_NULL ) return EPERM;
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    return EOK;
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}
170
 
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void null_device_stats( device_stats_ref stats ){
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    bzero( stats, sizeof( device_stats_t ));
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}
174
 
3846 mejdrech 175
int register_message( device_id_t device_id, int phone ){
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    ERROR_DECLARE;
177
 
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    device_ref  device;
179
 
180
    ERROR_PROPAGATE( find_device( device_id, & device ));
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    if( device->nil_phone > 0 ) return ELIMIT;
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    device->nil_phone = phone;
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    printf( "New receiver of the device %d registered:\n\tphone\t= %d\n", device->device_id, device->nil_phone );
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    return EOK;
185
}
186
 
187
int netif_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){
188
    ERROR_DECLARE;
189
 
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    size_t              length;
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    device_stats_t      stats;
4163 mejdrech 192
    packet_t            packet;
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    measured_string_t   address;
3666 mejdrech 194
 
4307 mejdrech 195
//  printf( "message %d - %d\n", IPC_GET_METHOD( * call ), NET_NETIF_FIRST );
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    * answer_count = 0;
197
    switch( IPC_GET_METHOD( * call )){
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        case IPC_M_PHONE_HUNGUP:
199
            return EOK;
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        case NET_NETIF_PROBE_AUTO:
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            fibril_rwlock_write_lock( & netif_globals.lock );
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            ERROR_CODE = netif_probe_auto_message();
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            fibril_rwlock_write_unlock( & netif_globals.lock );
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            return ERROR_CODE;
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        case NET_NETIF_PROBE:
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            return netif_probe_req( 0, IPC_GET_DEVICE( call ), NETIF_GET_IRQ( call ), NETIF_GET_IO( call ));
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        case IPC_M_CONNECT_TO_ME:
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            fibril_rwlock_write_lock( & netif_globals.lock );
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            ERROR_CODE = register_message( IPC_GET_DEVICE( call ), IPC_GET_PHONE( call ));
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            fibril_rwlock_write_unlock( & netif_globals.lock );
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            return ERROR_CODE;
3666 mejdrech 212
        case NET_NETIF_SEND:
4307 mejdrech 213
            ERROR_PROPAGATE( packet_translate( netif_globals.net_phone, & packet, IPC_GET_PACKET( call )));
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            return netif_send_msg( 0, IPC_GET_DEVICE( call ), packet, IPC_GET_SENDER( call ));
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        case NET_NETIF_START:
4307 mejdrech 216
            return netif_start_req( 0, IPC_GET_DEVICE( call ));
3666 mejdrech 217
        case NET_NETIF_STATS:
4582 mejdrech 218
            fibril_rwlock_read_lock( & netif_globals.lock );
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            if( ! ERROR_OCCURRED( ipc_data_read_receive( & callid, & length ))){
220
                if( length < sizeof( device_stats_t )){
221
                    ERROR_CODE = EOVERFLOW;
222
                }else{
4261 mejdrech 223
                    if( ! ERROR_OCCURRED( netif_get_device_stats( IPC_GET_DEVICE( call ), & stats ))){
4192 mejdrech 224
                        ERROR_CODE = ipc_data_read_finalize( callid, & stats, sizeof( device_stats_t ));
225
                    }
226
                }
227
            }
4582 mejdrech 228
            fibril_rwlock_read_unlock( & netif_globals.lock );
4192 mejdrech 229
            return ERROR_CODE;
3666 mejdrech 230
        case NET_NETIF_STOP:
4307 mejdrech 231
            return netif_stop_req( 0, IPC_GET_DEVICE( call ));
4163 mejdrech 232
        case NET_NETIF_GET_ADDR:
4582 mejdrech 233
            fibril_rwlock_read_lock( & netif_globals.lock );
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            if( ! ERROR_OCCURRED( netif_get_addr_message( IPC_GET_DEVICE( call ), & address ))){
4192 mejdrech 235
                ERROR_CODE = measured_strings_reply( & address, 1 );
236
            }
4582 mejdrech 237
            fibril_rwlock_read_unlock( & netif_globals.lock );
4192 mejdrech 238
            return ERROR_CODE;
3666 mejdrech 239
    }
4243 mejdrech 240
    return netif_specific_message( callid, call, answer, answer_count );
3666 mejdrech 241
}
242
 
4307 mejdrech 243
int netif_init_module( async_client_conn_t client_connection ){
3846 mejdrech 244
    ERROR_DECLARE;
3666 mejdrech 245
 
3846 mejdrech 246
    async_set_client_connection( client_connection );
4307 mejdrech 247
    netif_globals.net_phone = connect_to_service( SERVICE_NETWORKING );
3846 mejdrech 248
    device_map_initialize( & netif_globals.device_map );
3912 mejdrech 249
    ERROR_PROPAGATE( pm_init());
4582 mejdrech 250
    fibril_rwlock_initialize( & netif_globals.lock );
4243 mejdrech 251
    if( ERROR_OCCURRED( netif_initialize())){
3914 mejdrech 252
        pm_destroy();
253
        return ERROR_CODE;
254
    }
4307 mejdrech 255
    return EOK;
256
}
3912 mejdrech 257
 
4307 mejdrech 258
int netif_run_module( void ){
3846 mejdrech 259
    async_manager();
260
 
3912 mejdrech 261
    pm_destroy();
3846 mejdrech 262
    return EOK;
3666 mejdrech 263
}
264
 
4192 mejdrech 265
void netif_pq_release( packet_id_t packet_id ){
4307 mejdrech 266
    pq_release( netif_globals.net_phone, packet_id );
4192 mejdrech 267
}
268
 
269
packet_t netif_packet_get_1( size_t content ){
4307 mejdrech 270
    return packet_get_1( netif_globals.net_phone, content );
4192 mejdrech 271
}
272
 
3666 mejdrech 273
/** @}
274
 */