nes-proj/os/net/netstack.h
2017-10-08 14:50:07 +02:00

164 lines
5.4 KiB
C

/*
* 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.
*
* $Id: netstack.h,v 1.6 2010/10/03 20:37:32 adamdunkels Exp $
*/
/**
* \file
* Include file for the Contiki low-layer network stack (NETSTACK)
* \author
* Adam Dunkels <adam@sics.se>
*/
#ifndef NETSTACK_H
#define NETSTACK_H
#include "contiki.h"
/* Network layer configuration. The NET layer is configured through the Makefile,
via the flag MAC_NET */
#ifdef NETSTACK_CONF_NETWORK
#define NETSTACK_NETWORK NETSTACK_CONF_NETWORK
#else /* NETSTACK_CONF_NETWORK */
#if NETSTACK_CONF_WITH_IPV6
#define NETSTACK_NETWORK sicslowpan_driver
#elif NETSTACK_CONF_WITH_NULLNET
#define NETSTACK_NETWORK nullnet_driver
#else
#error Unknown NET configuration
#endif
#endif /* NETSTACK_CONF_NETWORK */
/* MAC layer configuration. The MAC layer is configured through the Makefile,
via the flag MAKE_MAC */
#ifdef NETSTACK_CONF_MAC
#define NETSTACK_MAC NETSTACK_CONF_MAC
#else /* NETSTACK_CONF_MAC */
#if MAC_CONF_WITH_NULLMAC
#define NETSTACK_MAC nullmac_driver
#elif MAC_CONF_WITH_CSMA
#define NETSTACK_MAC csma_driver
#elif MAC_CONF_WITH_TSCH
#define NETSTACK_MAC tschmac_driver
#else
#error Unknown MAC configuration
#endif
#endif /* NETSTACK_CONF_MAC */
/* Radio driver configuration. Most often set by the platform. */
#ifdef NETSTACK_CONF_RADIO
#define NETSTACK_RADIO NETSTACK_CONF_RADIO
#else /* NETSTACK_CONF_RADIO */
#define NETSTACK_RADIO nullradio_driver
#endif /* NETSTACK_CONF_RADIO */
/* Framer selection. The framer is used by the MAC implementation
to build and parse frames. */
#ifdef NETSTACK_CONF_FRAMER
#define NETSTACK_FRAMER NETSTACK_CONF_FRAMER
#else /* NETSTACK_CONF_FRAMER */
#define NETSTACK_FRAMER framer_802154
#endif /* NETSTACK_CONF_FRAMER */
#include "net/mac/mac.h"
#include "net/mac/framer/framer.h"
#include "dev/radio.h"
#include "net/linkaddr.h"
/**
* The structure of a network driver in Contiki.
*/
struct network_driver {
char *name;
/** Initialize the network driver */
void (* init)(void);
/** Callback for getting notified of incoming packet in packetbuf. */
void (* input)(void);
/** Output funtion, sends from uipbuf. */
uint8_t (* output)(const linkaddr_t *localdest);
};
extern const struct network_driver NETSTACK_NETWORK;
extern const struct mac_driver NETSTACK_MAC;
extern const struct radio_driver NETSTACK_RADIO;
extern const struct framer NETSTACK_FRAMER;
void netstack_init(void);
/* Netstack ip_packet_processor - for implementing packet filters, firewalls,
debuggin info, etc */
enum netstack_ip_action {
NETSTACK_IP_PROCESS = 0, /* Default behaviour - nothing else */
NETSTACK_IP_DROP = 1, /* Drop this packet before processing/sending anymore */
};
enum netstack_ip_callback_type {
NETSTACK_IP_INPUT = 0,
NETSTACK_IP_OUTPUT = 1,
};
struct netstack_ip_packet_processor {
struct netstack_ip_packet_processor *next;
enum netstack_ip_action (* process_input)(void);
enum netstack_ip_action (* process_output)(const linkaddr_t *localdest);
};
/* This function is intended for the IP stack to call whenever input/output
callback needs to be called */
enum netstack_ip_action netstack_process_ip_callback(uint8_t type, const linkaddr_t *localdest);
void netstack_ip_packet_processor_add(struct netstack_ip_packet_processor *p);
void netstack_ip_packet_processor_remove(struct netstack_ip_packet_processor *p);
/* Netstack sniffer - this will soon be deprecated... */
struct netstack_sniffer {
struct netstack_sniffer *next;
void (* input_callback)(void);
void (* output_callback)(int mac_status);
};
#define NETSTACK_SNIFFER(name, input_callback, output_callback) \
static struct netstack_sniffer name = { NULL, input_callback, output_callback }
void netstack_sniffer_add(struct netstack_sniffer *s);
void netstack_sniffer_remove(struct netstack_sniffer *s);
#endif /* NETSTACK_H */