32 lines
1.0 KiB
C
32 lines
1.0 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "time-util.h"
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/* RFC 8781: PREF64 or (NAT64 prefix) */
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#define PREF64_SCALED_LIFETIME_MASK 0xfff8
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#define PREF64_PLC_MASK 0x0007
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#define PREF64_MAX_LIFETIME_USEC (65528 * USEC_PER_SEC)
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typedef enum PrefixLengthCode {
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PREFIX_LENGTH_CODE_96,
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PREFIX_LENGTH_CODE_64,
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PREFIX_LENGTH_CODE_56,
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PREFIX_LENGTH_CODE_48,
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PREFIX_LENGTH_CODE_40,
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PREFIX_LENGTH_CODE_32,
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_PREFIX_LENGTH_CODE_MAX,
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_PREFIX_LENGTH_CODE_INVALID = -EINVAL,
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} PrefixLengthCode;
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/* rfc8781: section 4 - Scaled Lifetime: 13-bit unsigned integer. PREFIX_LEN (Prefix Length Code): 3-bit unsigned integer */
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struct nd_opt_prefix64_info {
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uint8_t type;
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uint8_t length;
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uint16_t lifetime_and_plc;
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uint8_t prefix[12];
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} __attribute__((__packed__));
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int pref64_plc_to_prefix_length(uint16_t plc, uint8_t *ret);
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int pref64_prefix_length_to_plc(uint8_t prefixlen, uint8_t *ret);
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