mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-22 10:30:13 +00:00
Unique identified best effort local area broadcast
This commit is contained in:
adamdunkels
parent
4328947d26
commit
9951aba084
118
core/net/rime/uibc.c
Normal file
118
core/net/rime/uibc.c
Normal file
@ -0,0 +1,118 @@
|
||||
/*
|
||||
* 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: uibc.c,v 1.1 2007/03/21 23:21:01 adamdunkels Exp $
|
||||
*/
|
||||
|
||||
/**
|
||||
* \file
|
||||
* Unique Identified best effort local area BroadCast (uibc)
|
||||
* \author
|
||||
* Adam Dunkels <adam@sics.se>
|
||||
*/
|
||||
|
||||
#include "net/rime.h"
|
||||
#include "net/rime/uibc.h"
|
||||
#include "lib/rand.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static void
|
||||
recv(struct ibc_conn *ibc, rimeaddr_t *from)
|
||||
{
|
||||
struct uibc_conn *c = (struct uibc_conn *)ibc;
|
||||
if(c->q != NULL &&
|
||||
rimebuf_datalen() == queuebuf_datalen(c->q) &&
|
||||
memcmp(rimebuf_dataptr(), queuebuf_dataptr(c->q),
|
||||
rimebuf_datalen()) == 0) {
|
||||
/* We received a copy of our own packet, so we do not send out
|
||||
packet. */
|
||||
queuebuf_free(c->q);
|
||||
ctimer_stop(&c->t);
|
||||
if(c->cb->dropped) {
|
||||
c->cb->dropped(c);
|
||||
}
|
||||
}
|
||||
if(c->cb->recv) {
|
||||
c->cb->recv(c, from);
|
||||
}
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static void
|
||||
send(void *ptr)
|
||||
{
|
||||
struct uibc_conn *c = ptr;
|
||||
|
||||
if(c->q != NULL) {
|
||||
queuebuf_to_rimebuf(c->q);
|
||||
queuebuf_free(c->q);
|
||||
ibc_send(&c->c);
|
||||
if(c->cb->sent) {
|
||||
c->cb->sent(c);
|
||||
}
|
||||
}
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static const struct ibc_callbacks ibc = { recv };
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uibc_open(struct uibc_conn *c, u16_t channel,
|
||||
const struct uibc_callbacks *cb)
|
||||
{
|
||||
ibc_open(&c->c, channel, &ibc);
|
||||
c->cb = cb;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uibc_close(struct uibc_conn *c)
|
||||
{
|
||||
ibc_close(&c->c);
|
||||
ctimer_stop(&c->t);
|
||||
if(c->q != NULL) {
|
||||
queuebuf_free(c->q);
|
||||
}
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
int
|
||||
uibc_send(struct uibc_conn *c, clock_time_t interval)
|
||||
{
|
||||
if(c->q != NULL) {
|
||||
/* If we are already about to send a packet, we cancel the old one. */
|
||||
queuebuf_free(c->q);
|
||||
}
|
||||
c->q = queuebuf_new_from_rimebuf();
|
||||
if(c->q != NULL) {
|
||||
ctimer_set(&c->t, interval / 2 + (rand() % (interval / 2)), send, c);
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
82
core/net/rime/uibc.h
Normal file
82
core/net/rime/uibc.h
Normal file
@ -0,0 +1,82 @@
|
||||
/**
|
||||
* \addtogroup rime
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* \defgroup uibc Unique Identified best effort local area BroadCast
|
||||
* @{
|
||||
*
|
||||
* Send one packet that is unique within a time interval.
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* 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: uibc.h,v 1.1 2007/03/21 23:21:01 adamdunkels Exp $
|
||||
*/
|
||||
|
||||
/**
|
||||
* \file
|
||||
* Header file for Unique Identified best effort local area BroadCast (uibc)
|
||||
* \author
|
||||
* Adam Dunkels <adam@sics.se>
|
||||
*/
|
||||
|
||||
#ifndef __UIBC_H__
|
||||
#define __UIBC_H__
|
||||
|
||||
#include "net/rime.h"
|
||||
|
||||
struct uibc_conn;
|
||||
|
||||
struct uibc_callbacks {
|
||||
void (* recv)(struct uibc_conn *c, rimeaddr_t *from);
|
||||
void (* sent)(struct uibc_conn *c);
|
||||
void (* dropped)(struct uibc_conn *c);
|
||||
};
|
||||
|
||||
struct uibc_conn {
|
||||
struct ibc_conn c;
|
||||
const struct uibc_callbacks *cb;
|
||||
struct ctimer t;
|
||||
struct queuebuf *q;
|
||||
};
|
||||
|
||||
void uibc_open(struct uibc_conn *c, u16_t channel,
|
||||
const struct uibc_callbacks *cb);
|
||||
void uibc_close(struct uibc_conn *c);
|
||||
int uibc_send(struct uibc_conn *c, clock_time_t interval);
|
||||
|
||||
#endif /* __UIBC_H__ */
|
||||
|
||||
/** @} */
|
||||
/** @} */
|
||||
Loading…
Reference in New Issue
Block a user