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Transmission of IP packets over mesh routing, implemented with Rime

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adamdunkels 2007-03-22 18:58:40 +00:00
parent 1f91695771
commit eea7f463d7
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151
core/net/uip-over-mesh.c Normal file
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/*
* Copyright (c) 2007, 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: uip-over-mesh.c,v 1.1 2007/03/22 18:58:40 adamdunkels Exp $
*/
/**
* \file
* Code for tunnelling uIP packets over the mesh routing module
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "net/hc.h"
#include "net/uip-fw.h"
#include "net/rime/route-discovery.h"
#include "net/rime/route.h"
#define ROUTE_TIMEOUT CLOCK_SECOND * 4
static struct queuebuf *queued_packet;
static rimeaddr_t queued_receiver;
static struct route_discovery_conn route_discovery;;
static struct uc_conn dataconn;
/*---------------------------------------------------------------------------*/
static void
recv_data(struct uc_conn *c, rimeaddr_t *from)
{
uip_len = rimebuf_copyto(&uip_buf[UIP_LLH_LEN]);
/* uip_len = hc_inflate(&uip_buf[UIP_LLH_LEN], uip_len);*/
printf("%d.%d:recv_data\n",
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1]);
tcpip_input();
}
/*---------------------------------------------------------------------------*/
static void
send_data(rimeaddr_t *next)
{
printf("%d.%d:send_data\n",
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1]);
uc_send(&dataconn, next);
}
/*---------------------------------------------------------------------------*/
static void
new_route(struct route_discovery_conn *c, rimeaddr_t *to)
{
struct route_entry *rt;
if(queued_packet) {
queuebuf_to_rimebuf(queued_packet);
queuebuf_free(queued_packet);
queued_packet = NULL;
rt = route_lookup(&queued_receiver);
if(rt) {
send_data(&queued_receiver);
}
}
}
/*---------------------------------------------------------------------------*/
static void
timedout(struct route_discovery_conn *c)
{
if(queued_packet) {
queuebuf_free(queued_packet);
}
}
/*---------------------------------------------------------------------------*/
static const struct uc_callbacks data_callbacks = { recv_data };
static const struct route_discovery_callbacks rdc = { new_route, timedout };
/*---------------------------------------------------------------------------*/
void
uip_over_mesh_init(u16_t channels)
{
/* printf("Our address is %d.%d (%d.%d.%d.%d)\n",
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
uip_hostaddr.u8[0], uip_hostaddr.u8[1],
uip_hostaddr.u8[2], uip_hostaddr.u8[3]); */
uc_open(&dataconn, channels, &data_callbacks);
route_discovery_open(&route_discovery, channels + 1, &rdc);
tcpip_set_forwarding(1);
}
/*---------------------------------------------------------------------------*/
u8_t
uip_over_mesh_send(void)
{
rimeaddr_t receiver;
struct route_entry *rt;
/* This function is called by the uip-fw module to send out an IP
packet. We try to send the IP packet to the next hop route, or we
queue the packet and send out a route request for the final
receiver of the packet. */
receiver.u16[0] = ((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->destipaddr.u16[1];
printf("uIP over mesh send to %d.%d\n", receiver.u8[0], receiver.u8[1]);
/* uip_len = hc_compress(&uip_buf[UIP_LLH_LEN], uip_len);*/
rimebuf_copyfrom(&uip_buf[UIP_LLH_LEN], uip_len);
rt = route_lookup(&receiver);
if(rt == NULL) {
printf("uIP over mesh no route to %d.%d\n", receiver.u8[0], receiver.u8[1]);
if(queued_packet == NULL) {
queued_packet = queuebuf_new_from_rimebuf();
rimeaddr_copy(&queued_receiver, &receiver);
route_discovery_discover(&route_discovery, &receiver, ROUTE_TIMEOUT);
} else if(!rimeaddr_cmp(&queued_receiver, &receiver)) {
route_discovery_discover(&route_discovery, &receiver, ROUTE_TIMEOUT);
}
} else {
send_data(&rt->nexthop);
}
return UIP_FW_OK;
}
/*---------------------------------------------------------------------------*/

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core/net/uip-over-mesh.h Normal file
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/*
* Copyright (c) 2007, 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: uip-over-mesh.h,v 1.1 2007/03/22 18:58:40 adamdunkels Exp $
*/
/**
* \file
* A brief description of what this file is.
* \author
* Adam Dunkels <adam@sics.se>
*/
#ifndef __UIP_OVER_MESH_H__
#define __UIP_OVER_MESH_H__
void uip_over_mesh_init(u16_t channels);
u8_t uip_over_mesh_send(void);
#endif /* __UIP-OVER-MESH_H__ */