/* ip_opts.h
 * Definitions of structures and routines for dissection of options that
 * work like IPv4 options
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */
#pragma once
#include "ws_symbol_export.h"

/** @file
 */

/**
 * @brief Describes how the length of a protocol option field is determined.
 */
typedef enum {
    OPT_LEN_NO_LENGTH,       /**< Option carries no data and has no length field */
    OPT_LEN_FIXED_LENGTH,    /**< Option always has the same fixed length */
    OPT_LEN_VARIABLE_LENGTH  /**< Option is variable-length; optlen specifies the minimum valid length */
} opt_len_type;



/* Quick-Start option, as defined by RFC4782 */
#define QS_FUNC_MASK        0xf0
#define QS_RATE_MASK        0x0f
#define QS_RATE_REQUEST     0
#define QS_RATE_REPORT      8

/* IP options */
#define IPOPT_COPY_MASK         0x80
#define IPOPT_CLASS_MASK        0x60
#define IPOPT_NUMBER_MASK       0x1F

WS_DLL_PUBLIC const value_string qs_func_vals[];
WS_DLL_PUBLIC value_string_ext qs_rate_vals_ext;

WS_DLL_PUBLIC const value_string ipopt_type_class_vals[];
WS_DLL_PUBLIC const value_string ipopt_type_number_vals[];
