24 lines
609 B
C
24 lines
609 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_CRC_CCITT_H
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#define _LINUX_CRC_CCITT_H
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#include <linux/types.h>
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extern u16 const crc_ccitt_table[256];
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extern u16 const crc_ccitt_false_table[256];
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extern u16 crc_ccitt(u16 crc, const u8 *buffer, size_t len);
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extern u16 crc_ccitt_false(u16 crc, const u8 *buffer, size_t len);
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static inline u16 crc_ccitt_byte(u16 crc, const u8 c)
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{
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return (crc >> 8) ^ crc_ccitt_table[(crc ^ c) & 0xff];
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}
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static inline u16 crc_ccitt_false_byte(u16 crc, const u8 c)
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{
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return (crc << 8) ^ crc_ccitt_false_table[(crc >> 8) ^ c];
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}
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#endif /* _LINUX_CRC_CCITT_H */
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