/*
* Copyright (c) 2009 Lukas Mejdrech
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup netif
* @{
*/
/** @file
* Network interface module skeleton implementation.
* @see netif.h
*/
#include <async.h>
#include <mem.h>
#include <rwlock.h>
#include <stdio.h>
#include <ipc/ipc.h>
#include <ipc/services.h>
#include "../err.h"
#include "../messages.h"
#include "../modules.h"
#include "../structures/packet/packet.h"
#include "../structures/packet/packet_client.h"
#include "../structures/measured_strings.h"
#include "../include/device.h"
#include "../include/netif_interface.h"
#include "../include/nil_interface.h"
#include "netif.h"
#include "netif_messages.h"
#include "netif_module.h"
/** Network interface module global data.
*/
extern netif_globals_t netif_globals;
DEVICE_MAP_IMPLEMENT( device_map, device_t )
/** Registers the device notification receiver, the network interface layer module.
* @param device_id The device identifier. Input parameter.
* @param phone The network interface layer module phone. Input parameter.
* @returns EOK on success.
* @returns ENOENT if there is no such device.
* @returns ELIMIT if there is another module registered.
*/
int register_message( device_id_t device_id, int phone );
int netif_probe_req( int netif_phone, device_id_t device_id, int irq, int io ){
int result;
rwlock_write_lock( & netif_globals.lock );
result = netif_probe_message( device_id, irq, io );
rwlock_write_unlock( & netif_globals.lock );
return result;
}
int netif_send_msg( int netif_phone, device_id_t device_id, packet_t packet, services_t sender ){
int result;
rwlock_write_lock( & netif_globals.lock );
result = netif_send_message( device_id, packet, sender );
rwlock_write_unlock( & netif_globals.lock );
return result;
}
int netif_start_req( int netif_phone, device_id_t device_id ){
ERROR_DECLARE;
device_ref device;
int result;
int phone;
rwlock_write_lock( & netif_globals.lock );
if( ERROR_OCCURRED( find_device( device_id, & device ))){
rwlock_write_unlock( & netif_globals.lock );
return ERROR_CODE;
}
result = netif_start_message( device );
if( result > NETIF_NULL ){
phone = device->nil_phone;
rwlock_write_unlock( & netif_globals.lock );
nil_device_state_msg( phone, device_id, result );
return EOK;
}else{
rwlock_write_unlock( & netif_globals.lock );
}
return result;
}
int netif_stop_req( int netif_phone, device_id_t device_id ){
ERROR_DECLARE;
device_ref device;
int result;
int phone;
rwlock_write_lock( & netif_globals.lock );
if( ERROR_OCCURRED( find_device( device_id, & device ))){
rwlock_write_unlock( & netif_globals.lock );
return ERROR_CODE;
}
result = netif_stop_message( device );
if( result > NETIF_NULL ){
phone = device->nil_phone;
rwlock_write_unlock( & netif_globals.lock );
nil_device_state_msg( phone, device_id, result );
return EOK;
}else{
rwlock_write_unlock( & netif_globals.lock );
}
return result;
}
int netif_get_addr( int netif_phone, device_id_t device_id, measured_string_ref * address, char ** data ){
ERROR_DECLARE;
measured_string_t translation;
if( !( address && data )) return EBADMEM;
rwlock_read_lock( & netif_globals.lock );
if( ! ERROR_OCCURRED( netif_get_addr_message( device_id, & translation ))){
* address = measured_string_copy( & translation );
ERROR_CODE = ( * address ) ? EOK : ENOMEM;
}
rwlock_read_unlock( & netif_globals.lock );
* data = ( ** address ).value;
return ERROR_CODE;
}
int netif_bind_service( services_t service, device_id_t device_id, services_t me, async_client_conn_t receiver ){
return EOK;
}
int find_device( device_id_t device_id, device_ref * device ){
if( ! device ) return EBADMEM;
* device = device_map_find( & netif_globals.device_map, device_id );
if( ! * device ) return ENOENT;
if(( ** device ).state == NETIF_NULL ) return EPERM;
return EOK;
}
void null_device_stats( device_stats_ref stats ){
bzero( stats, sizeof( device_stats_t ));
}
int register_message( device_id_t device_id, int phone ){
ERROR_DECLARE;
device_ref device;
ERROR_PROPAGATE( find_device( device_id, & device ));
if( device->nil_phone > 0 ) return ELIMIT;
device->nil_phone = phone;
printf( "New receiver of the device %d registered:\n\tphone\t= %d\n", device
->device_id
, device
->nil_phone
); return EOK;
}
int netif_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){
ERROR_DECLARE;
size_t length;
device_stats_t stats;
packet_t packet;
measured_string_t address;
// printf( "message %d - %d\n", IPC_GET_METHOD( * call ), NET_NETIF_FIRST );
* answer_count = 0;
switch( IPC_GET_METHOD( * call )){
case IPC_M_PHONE_HUNGUP:
return EOK;
case NET_NETIF_PROBE_AUTO:
rwlock_write_lock( & netif_globals.lock );
ERROR_CODE = netif_probe_auto_message();
rwlock_write_unlock( & netif_globals.lock );
return ERROR_CODE;
case NET_NETIF_PROBE:
return netif_probe_req( 0, IPC_GET_DEVICE( call ), NETIF_GET_IRQ( call ), NETIF_GET_IO( call ));
case IPC_M_CONNECT_TO_ME:
rwlock_write_lock( & netif_globals.lock );
ERROR_CODE = register_message( IPC_GET_DEVICE( call ), IPC_GET_PHONE( call ));
rwlock_write_unlock( & netif_globals.lock );
return ERROR_CODE;
case NET_NETIF_SEND:
case NET_NIL_SEND:
ERROR_PROPAGATE( packet_translate( netif_globals.net_phone, & packet, IPC_GET_PACKET( call )));
return netif_send_msg( 0, IPC_GET_DEVICE( call ), packet, IPC_GET_SENDER( call ));
case NET_NETIF_START:
return netif_start_req( 0, IPC_GET_DEVICE( call ));
case NET_NETIF_STATS:
rwlock_read_lock( & netif_globals.lock );
if( ! ERROR_OCCURRED( ipc_data_read_receive( & callid, & length ))){
if( length < sizeof( device_stats_t )){
ERROR_CODE = EOVERFLOW;
}else{
if( ! ERROR_OCCURRED( netif_get_device_stats( IPC_GET_DEVICE( call ), & stats ))){
ERROR_CODE = ipc_data_read_finalize( callid, & stats, sizeof( device_stats_t ));
}
}
}
rwlock_read_unlock( & netif_globals.lock );
return ERROR_CODE;
case NET_NETIF_STOP:
return netif_stop_req( 0, IPC_GET_DEVICE( call ));
case NET_NETIF_GET_ADDR:
case NET_NIL_ADDR:
rwlock_read_lock( & netif_globals.lock );
if( ! ERROR_OCCURRED( netif_get_addr_message( IPC_GET_DEVICE( call ), & address ))){
ERROR_CODE = measured_strings_reply( & address, 1 );
}
rwlock_read_unlock( & netif_globals.lock );
return ERROR_CODE;
}
return netif_specific_message( callid, call, answer, answer_count );
}
int netif_init_module( async_client_conn_t client_connection ){
ERROR_DECLARE;
async_set_client_connection( client_connection );
netif_globals.net_phone = connect_to_service( SERVICE_NETWORKING );
device_map_initialize( & netif_globals.device_map );
ERROR_PROPAGATE( pm_init());
rwlock_initialize( & netif_globals.lock );
if( ERROR_OCCURRED( netif_initialize())){
pm_destroy();
return ERROR_CODE;
}
return EOK;
}
int netif_run_module( void ){
async_manager();
pm_destroy();
return EOK;
}
void netif_pq_release( packet_id_t packet_id ){
pq_release( netif_globals.net_phone, packet_id );
}
packet_t netif_packet_get_1( size_t content ){
return packet_get_1( netif_globals.net_phone, content );
}
/** @}
*/