HelenOS sources

root/uspace/srv/net/tcp/seq_no.h

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/*
 * Copyright (c) 2011 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/** @addtogroup tcp
 * @{
 */
/** @file Sequence number computations
 */

#ifndef SEQ_NO_H
#define SEQ_NO_H

#include <stdint.h>
#include "tcp_type.h"

extern bool seq_no_ack_acceptable(tcp_conn_t *, uint32_t);
extern bool seq_no_ack_duplicate(tcp_conn_t *, uint32_t);
extern bool seq_no_in_rcv_wnd(tcp_conn_t *, uint32_t);
extern bool seq_no_new_wnd_update(tcp_conn_t *, tcp_segment_t *);
extern bool seq_no_segment_acked(tcp_conn_t *, tcp_segment_t *, uint32_t);
extern bool seq_no_syn_acked(tcp_conn_t *);
extern bool seq_no_segment_ready(tcp_conn_t *, tcp_segment_t *);
extern bool seq_no_segment_acceptable(tcp_conn_t *, tcp_segment_t *);
extern void seq_no_seg_trim_calc(tcp_conn_t *, tcp_segment_t *, uint32_t *,
    uint32_t *);
extern int seq_no_seg_cmp(tcp_conn_t *, tcp_segment_t *, tcp_segment_t *);

extern uint32_t seq_no_control_len(tcp_control_t);

#endif

/** @}
 */

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