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123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/*
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* Copyright (c) 2007, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \file
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* Header file for the single-hop reliable bulk data transfer module
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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/**
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* \addtogroup rime
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* @{
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*/
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/**
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* \defgroup rudolph0 Single-hop reliable bulk data transfer (rudolph0)
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* @{
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*
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* The rudolph0 module implements a single-hop reliable bulk data
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* transfer mechanism.
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*
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* \section rudolph0-channels Channels
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*
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* The rudolph0 module uses 2 channels; one for data packets and one
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* for NACK and repair packets.
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*
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*/
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#ifndef RUDOLPH0_H_
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#define RUDOLPH0_H_
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#include "net/rime/stbroadcast.h"
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#include "net/rime/polite.h"
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struct rudolph0_conn;
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enum {
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RUDOLPH0_FLAG_NONE,
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RUDOLPH0_FLAG_NEWFILE,
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RUDOLPH0_FLAG_LASTCHUNK,
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};
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struct rudolph0_callbacks {
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void (* write_chunk)(struct rudolph0_conn *c, int offset, int flag,
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uint8_t *data, int len);
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int (* read_chunk)(struct rudolph0_conn *c, int offset, uint8_t *to,
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int maxsize);
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};
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#ifdef RUDOLPH0_CONF_DATASIZE
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#define RUDOLPH0_DATASIZE RUDOLPH0_CONF_DATASIZE
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#else
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#define RUDOLPH0_DATASIZE 64
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#endif
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struct rudolph0_hdr {
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uint8_t type;
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uint8_t version;
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uint16_t chunk;
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};
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struct rudolph0_datapacket {
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struct rudolph0_hdr h;
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uint8_t datalen;
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uint8_t data[RUDOLPH0_DATASIZE];
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};
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struct rudolph0_conn {
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struct stbroadcast_conn c;
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struct polite_conn nackc;
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const struct rudolph0_callbacks *cb;
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clock_time_t send_interval;
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uint8_t state;
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struct rudolph0_datapacket current;
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};
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void rudolph0_open(struct rudolph0_conn *c, uint16_t channel,
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const struct rudolph0_callbacks *cb);
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void rudolph0_close(struct rudolph0_conn *c);
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void rudolph0_send(struct rudolph0_conn *c, clock_time_t interval);
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void rudolph0_stop(struct rudolph0_conn *c);
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/* Force the sender to restart sending the file from the start. */
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void rudolph0_force_restart(struct rudolph0_conn *c);
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void rudolph0_set_version(struct rudolph0_conn *c, int version);
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int rudolph0_version(struct rudolph0_conn *c);
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#endif /* RUDOLPH0_H_ */
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/** @} */
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/** @} */
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