osd-contiki/core/net/rime/rudolph2.h

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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.
*
*/
/**
* \file
* Header file for the single-hop reliable bulk data transfer module
* \author
* Adam Dunkels <adam@sics.se>
*/
/**
* \addtogroup rime
* @{
*/
/**
* \defgroup rudolph2 Single-hop reliable bulk data transfer (rudolph2)
* @{
*
* The rudolph2 module implements a single-hop reliable bulk data
* transfer mechanism.
*
* \section rudolph2-channels Channels
*
* The rudolph2 module uses 2 channels; one for data packets and one
* for NACK and repair packets.
*
*/
#ifndef RUDOLPH2_H_
#define RUDOLPH2_H_
#include "net/rime/polite.h"
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#include "sys/ctimer.h"
struct rudolph2_conn;
enum {
RUDOLPH2_FLAG_NONE,
RUDOLPH2_FLAG_NEWFILE,
RUDOLPH2_FLAG_LASTCHUNK,
};
struct rudolph2_callbacks {
void (* write_chunk)(struct rudolph2_conn *c, int offset, int flag,
uint8_t *data, int len);
int (* read_chunk)(struct rudolph2_conn *c, int offset, uint8_t *to,
int maxsize);
};
#define RUDOLPH2_DATASIZE 64
struct rudolph2_conn {
struct polite_conn c;
const struct rudolph2_callbacks *cb;
struct ctimer t;
uint16_t snd_nxt, rcv_nxt;
uint16_t version;
uint8_t hops_from_base;
uint8_t nacks;
uint8_t flags;
};
void rudolph2_open(struct rudolph2_conn *c, uint16_t channel,
const struct rudolph2_callbacks *cb);
void rudolph2_close(struct rudolph2_conn *c);
void rudolph2_send(struct rudolph2_conn *c, clock_time_t interval);
void rudolph2_stop(struct rudolph2_conn *c);
void rudolph2_set_version(struct rudolph2_conn *c, int version);
int rudolph2_version(struct rudolph2_conn *c);
#endif /* RUDOLPH2_H_ */
/** @} */
/** @} */