1/*
2 * ut-sim.h
3 *
4 * an unreliable transport simulator
5 * (for testing replay databases and suchlike)
6 *
7 * David A. McGrew
8 * Cisco Systems, Inc.
9 */
10
11/*
12 *
13 * Copyright (c) 2001-2006, Cisco Systems, Inc.
14 * All rights reserved.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 *
20 *   Redistributions of source code must retain the above copyright
21 *   notice, this list of conditions and the following disclaimer.
22 *
23 *   Redistributions in binary form must reproduce the above
24 *   copyright notice, this list of conditions and the following
25 *   disclaimer in the documentation and/or other materials provided
26 *   with the distribution.
27 *
28 *   Neither the name of the Cisco Systems, Inc. nor the names of its
29 *   contributors may be used to endorse or promote products derived
30 *   from this software without specific prior written permission.
31 *
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
35 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
36 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
37 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
43 * OF THE POSSIBILITY OF SUCH DAMAGE.
44 *
45 */
46
47
48
49#ifndef UT_SIM_H
50#define UT_SIM_H
51
52#include "integers.h"  /* for uint32_t */
53
54#define UT_BUF 160      /* maximum amount of packet reorder */
55
56typedef struct {
57  uint32_t index;
58  uint32_t buffer[UT_BUF];
59} ut_connection;
60
61/*
62 * ut_init(&u) initializes the ut_connection
63 *
64 * this function should always be the first one called on a new
65 * ut_connection
66 */
67
68void
69ut_init(ut_connection *utc);
70
71/*
72 * ut_next_index(&u) returns the next index from the simulated
73 * unreliable connection
74 */
75
76uint32_t
77ut_next_index(ut_connection *utc);
78
79
80#endif /* UT_SIM_H */
81