void receive_task(void* pvParameters)
{
struct NLS_HandleTypedef* hNLS = (struct NLS_HandleTypedef*)pvParameters;
datagram_info* d_info;
for( ; ; )
{
xQueueReceive(hNLS->event_queue, &d_info, portMAX_DELAY);
#ifndef ROOT
if (d_info->retry != 0)
{
UTSwapMainLink(hNLS->uTable);
if(UTGetMainLink(hNLS->uTable) == UPSTREAM_TABLE_IS_EMPTY)
{
free_datagram_info(d_info);
}
else
{
receive_datagram(hNLS, d_info->source_if, d_info->packet, d_info->packet_length);
}
}
else
{
receive_datagram(hNLS, d_info->source_if, d_info->packet, d_info->packet_length);
}
#else
if (d_info->retry != 0)
{
downStreamTablePenaliziesBestPath(hNLS->dTable , d_info->address);
}
receive_datagram(hNLS,d_info->source_if,d_info->packet,d_info->packet_length);
#endif
}
}
/**
* Funzione eseguita ciclicamente. Disaccoda un pacchetto, ne verifica il tipo
* ed chiama la primitiva di invio appropriata.
*/
void dispatch (struct NLS_HandleTypedef* hNLS) //XXX PER PAOLO: MODIFICA FATTA!!
{
//scoda la prep queue se vuota
if (!simpleQueueEmpty(hNLS->PREP_queue))
{
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch()",
// LOG_STRING, "scoda la coda PREP", "OK",
// LOG_END);
on_PREP(hNLS , simpleQueueDequeue(hNLS->PREP_queue));
}
//scoda la coda di ingresso
datagram_info* d_info = (datagram_info*)priorityQueueDequeue(hNLS->routing_queue);
if (d_info == NULL)
{
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch()",
// LOG_STRING, "scoda la coda d'ingresso", "OK",
// LOG_STRING, "coda d'ingresso", "nessun datagram",
// LOG_END);
return;
}
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch()",
// LOG_STRING, "scoda la coda d'ingresso", "OK",
// LOG_STRING, "coda d'ingresso", "datagram scodato",
// LOG_INT, "if source", d_info->source_if,
// LOG_INT, "datagram type", d_info->type,
// LOG_INT, "packet length", d_info->packet_length,
// LOG_INT, "address", d_info->address,
// LOG_END);
//i messaggi di upstream e downstream diretti al root vanno direttamente al livello superiore
#ifdef ROOT
if (d_info->type == DATA_UP) //XXX CONTROLLARE DATA_DOWN
{
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch()",
// LOG_STRING, "nodo ROOT: datagram type", "DATA UP",
// LOG_STRING, "nodo ROOT: trasferisci al livello superiore", "OK",
// LOG_END);
on_datagram_received(d_info);
return;
}
#else
if ((get_datagram_address(d_info->packet) == MY_ADDRESS) && (d_info->type == DATA_DOWN))
{
//è un datagramma dati, manda ai livelli superiori
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch()",
// LOG_STRING, "datagram dati", "trasferisci aL livellO superiorE",
// LOG_END);
on_datagram_received(d_info);
//BSP_LED_On(LED5);
return;
}
//se non ho un path
if(UTGetSize(hNLS->uTable) == 0)
{
//se non ho un path ma ho pacchetti da inviare
if(d_info != NULL)
{
//fai path discovery
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch",
// LOG_STRING, "nessun path e datagram da inviare", "esegui path discovery",
// LOG_END);
on_path_discovery(hNLS , d_info);
}
}
#endif
//qui sono associato
switch(d_info->type)
{
case DATA_UP:
{
#ifndef ROOT //XXX PER PAOLO: Attenzione a questo #ifndef; potrebbe anche non essere necessario
if(d_info->source_if == UTGetMainLink(hNLS->uTable))
{
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch()",
// LOG_STRING, "datagram type", "DATA UP",
// LOG_STRING, "swap main link in Upstream Table", "OK",
// LOG_END);
UTSwapMainLink(hNLS->uTable);
}
send_upstream(hNLS , d_info);
#endif
break;
}
case DATA_DOWN:
{
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch()",
// LOG_STRING, "datagram type", "DATA DOWN",
// LOG_STRING, "trasmissione DOWNSTREAM", "OK",
// LOG_END);
send_downstream(hNLS , d_info);
break;
}
case BSRP_PREQ:
{
#ifndef ROOT
if(hNLS->enabled_ifs_num!=1) //XXX ZUPPA PAOLO: TENTATIVO DI AGGIUSTARE IL PROTOCOLLO
#endif
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch()",
// LOG_STRING, "datagram type", "PREQ",
// LOG_STRING, "on PREQ", "OK",
// LOG_END);
on_PREQ(hNLS , d_info);
break;
}
case BSRP_PFWD:
{
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch()",
// LOG_STRING, "datagram type", "PFWD",
// LOG_STRING, "on PFWD", "OK",
// LOG_END);
on_PFWD(hNLS , d_info);
break;
}
case BSRP_PREP:
{
#ifndef ROOT
//TODO Log
//EventLogger_LogEvent(&LOG_HANDLE, NETWORK, NOTICE, MY_ADDRESS, "dispatch()",
// LOG_STRING, "datagram type", "PREP",
// LOG_STRING, "trasmissione DOWNSTREAM", "OK",
// LOG_END);
send_downstream(hNLS , d_info);
#endif
break;
}
case BSRP_PACK:
{
break;
}
}
}
