nes-proj/os/net/netstack.c

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/*
* Copyright (c) 2010, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
* Initialiation file for the Contiki low-layer network stack (NETSTACK)
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "net/netstack.h"
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#include "lib/list.h"
/* The list of IP processors that will process IP packets before uip or after */
LIST(ip_processor_list);
/* Note: localdest is only used for the output callback */
enum netstack_ip_action
netstack_process_ip_callback(uint8_t type, const linkaddr_t *localdest)
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{
enum netstack_ip_action action = NETSTACK_IP_PROCESS;
struct netstack_ip_packet_processor *p;
for(p = list_head(ip_processor_list);
p != NULL;
p = list_item_next(p)) {
if(type == NETSTACK_IP_OUTPUT) {
if(p->process_output != NULL) {
action = p->process_output(localdest);
}
} else if(type == NETSTACK_IP_INPUT) {
if(p->process_input != NULL) {
action = p->process_input();
}
}
/* if not NETSTACK_IP_PROCESS - quit and return the desired action */
if(action != NETSTACK_IP_PROCESS)
return action;
}
return action;
}
/*---------------------------------------------------------------------------*/
void
netstack_ip_packet_processor_add(struct netstack_ip_packet_processor *p)
{
if(p != NULL) {
list_add(ip_processor_list, p);
}
}
/*---------------------------------------------------------------------------*/
void
uip_ds6_ip_packet_processor_rm(struct netstack_ip_packet_processor *p)
{
list_remove(ip_processor_list, p);
}
/*---------------------------------------------------------------------------*/
void
netstack_init(void)
{
NETSTACK_RADIO.init();
NETSTACK_MAC.init();
NETSTACK_NETWORK.init();
}
/*---------------------------------------------------------------------------*/