contiki/core/net/rime/rime-udp.c

176 lines
5.9 KiB
C

/*
* Copyright (c) 2009, 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
* A MAC protocol using UDP over IPv6.
* \author
* Nicolas Tsiftes <nvt@sics.se>
*/
#include <string.h>
#include "net/uip.h"
#include "net/uip-udp-packet.h"
#include "net/uip-netif.h"
#include "net/rime/rime-udp.h"
#include "net/packetbuf.h"
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF(" %02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x ", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
#ifndef RIME_CONF_UDP_PORT
#define RIME_UDP_PORT 9508
#else
#define RIME_UDP_PORT RIME_CONF_UDP_PORT
#endif /* RIME_CONF_UDP_PORT */
static struct uip_udp_conn *broadcast_conn;
static struct uip_udp_conn *unicast_conn;
static void (* receiver_callback)(const struct mac_driver *);
PROCESS(rime_udp_process, "Rime over UDP process");
PROCESS_THREAD(rime_udp_process, ev, data)
{
static uip_ipaddr_t ipaddr;
PROCESS_BEGIN();
broadcast_conn = udp_broadcast_new(UIP_HTONS(RIME_UDP_PORT), NULL);
if(broadcast_conn == NULL) {
PRINTF("rime-udp: Failed to allocate a broadcast connection!\n");
}
uip_create_unspecified(&ipaddr);
unicast_conn = udp_new(&ipaddr, UIP_HTONS(RIME_UDP_PORT), NULL);
if(unicast_conn == NULL) {
PRINTF("rime-udp: Failed to allocate a unicast connection!\n");
}
udp_bind(unicast_conn, UIP_HTONS(RIME_UDP_PORT));
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == tcpip_event);
if(uip_newdata()) {
packetbuf_clear();
memmove(packetbuf_hdrptr(), uip_appdata, uip_datalen());
PRINTF("rime-udp: received %d bytes\n", uip_datalen());
receiver_callback(&rime_udp_driver);
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
static void
send_packet(mac_callback_t sent_callback, void *ptr)
{
const rimeaddr_t *addr;
addr = packetbuf_addr(PACKETBUF_ADDR_RECEIVER);
PRINTF("rime-udp: Sending %d bytes to %d.%d\n", packetbuf_totlen(),
addr->u8[0], addr->u8[1]);
if(rimeaddr_cmp(&rimeaddr_null, addr)) {
uip_udp_packet_send(broadcast_conn,
packetbuf_hdrptr(), packetbuf_totlen());
mac_call_sent_callback(sent_callback, ptr, MAC_TX_OK, 1);
} else {
uip_ip6addr(&unicast_conn->ripaddr, 0xfe80, 0, 0, 0, 0, 0, 0, 0);
uip_netif_addr_autoconf_set(&unicast_conn->ripaddr, (uip_lladdr_t *)addr);
uip_udp_packet_send(unicast_conn,
packetbuf_hdrptr(), packetbuf_totlen());
uip_create_unspecified(&unicast_conn->ripaddr);
}
return;
}
/*---------------------------------------------------------------------------*/
static int
input_packet(void)
{
packetbuf_set_datalen(uip_datalen());
return uip_datalen();
}
/*---------------------------------------------------------------------------*/
static void
set_receive_function(void (* recv)(const struct mac_driver *))
{
receiver_callback = recv;
}
/*---------------------------------------------------------------------------*/
static int
on(void)
{
return 1;
}
/*---------------------------------------------------------------------------*/
static int
off(int keep_radio_on)
{
return 0;
}
/*---------------------------------------------------------------------------*/
static unsigned short
check_interval(void)
{
return 0;
}
/*---------------------------------------------------------------------------*/
static int
init(void)
{
process_start(&rime_udp_process, NULL);
return 1;
}
/*---------------------------------------------------------------------------*/
const struct mac_driver rime_udp_driver = {
"rime-udp",
init,
send_packet,
input_packet,
on,
off,
check_interval,
};
/*---------------------------------------------------------------------------*/