deac/osd-contiki
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Renamed Rime module mh to multihop

Browse source
This commit is contained in:
adamdunkels 2008-07-03 22:36:02 +00:00
parent d9b3097037
commit 4687c2c948
7 changed files with 55 additions and 55 deletions
Download patch file Download diff file Expand all files Collapse all files

151
core/net/rime/multihop.c Normal file
View file

@ -0,0 +1,151 @@
/**
* \addtogroup rimemh
* @{
*/
/*
* 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: multihop.c,v 1.1 2008/07/03 22:36:03 adamdunkels Exp $
*/
/**
* \file
* Multihop forwarding
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "contiki.h"
#include "net/rime.h"
#include "net/rime/multihop.h"
#include "net/rime/route.h"
#include <string.h>
struct data_hdr {
rimeaddr_t dest;
rimeaddr_t originator;
uint8_t hops;
uint8_t pad;
};
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
/*---------------------------------------------------------------------------*/
void
data_packet_received(struct unicast_conn *uc, rimeaddr_t *from)
{
struct multihop_conn *c = (struct multihop_conn *)uc;
struct data_hdr msg;
rimeaddr_t *nexthop;
memcpy(&msg, rimebuf_dataptr(), sizeof(struct data_hdr));
PRINTF("data_packet_received from %d.%d towards %d.%d len %d\n",
from->u8[0], from->u8[1],
msg.dest.u8[0], msg.dest.u8[1],
rimebuf_datalen());
if(rimeaddr_cmp(&msg.dest, &rimeaddr_node_addr)) {
PRINTF("for us!\n");
rimebuf_hdrreduce(sizeof(struct data_hdr));
if(c->cb->recv) {
c->cb->recv(c, &msg.originator, from, msg.hops);
}
} else {
nexthop = NULL;
if(c->cb->forward) {
rimebuf_hdrreduce(sizeof(struct data_hdr));
nexthop = c->cb->forward(c, &msg.originator,
&msg.dest, from, msg.hops);
rimebuf_hdralloc(sizeof(struct data_hdr));
msg.hops++;
memcpy(rimebuf_hdrptr(), &msg, sizeof(struct data_hdr));
}
if(nexthop) {
PRINTF("forwarding to %d.%d\n", nexthop->u8[0], nexthop->u8[1]);
unicast_send(&c->c, nexthop);
}
}
}
/*---------------------------------------------------------------------------*/
static const struct unicast_callbacks data_callbacks = { data_packet_received };
/*---------------------------------------------------------------------------*/
void
multihop_open(struct multihop_conn *c, uint16_t channel,
const struct multihop_callbacks *callbacks)
{
unicast_open(&c->c, channel, &data_callbacks);
c->cb = callbacks;
}
/*---------------------------------------------------------------------------*/
void
multihop_close(struct multihop_conn *c)
{
unicast_close(&c->c);
}
/*---------------------------------------------------------------------------*/
int
multihop_send(struct multihop_conn *c, rimeaddr_t *to)
{
rimeaddr_t *nexthop;
struct data_hdr *hdr;
if(c->cb->forward == NULL) {
return 0;
}
rimebuf_compact();
nexthop = c->cb->forward(c, &rimeaddr_node_addr, to, NULL, 0);
if(nexthop == NULL) {
PRINTF("multihop_send: no route\n");
return 0;
} else {
PRINTF("multihop_send: sending data towards %d.%d\n",
nexthop->u8[0], nexthop->u8[1]);
if(rimebuf_hdralloc(sizeof(struct data_hdr))) {
hdr = rimebuf_hdrptr();
rimeaddr_copy(&hdr->dest, to);
rimeaddr_copy(&hdr->originator, &rimeaddr_node_addr);
hdr->hops = 1;
unicast_send(&c->c, nexthop);
}
return 1;
}
}
/*---------------------------------------------------------------------------*/
/** @} */