xref: /linux/include/linux/hex.h (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_HEX_H
3 #define _LINUX_HEX_H
4 
5 #include <linux/types.h>
6 
7 extern const char hex_asc[];
8 #define hex_asc_lo(x)	hex_asc[((x) & 0x0f)]
9 #define hex_asc_hi(x)	hex_asc[((x) & 0xf0) >> 4]
10 
hex_byte_pack(char * buf,u8 byte)11 static inline char *hex_byte_pack(char *buf, u8 byte)
12 {
13 	*buf++ = hex_asc_hi(byte);
14 	*buf++ = hex_asc_lo(byte);
15 	return buf;
16 }
17 
18 extern const char hex_asc_upper[];
19 #define hex_asc_upper_lo(x)	hex_asc_upper[((x) & 0x0f)]
20 #define hex_asc_upper_hi(x)	hex_asc_upper[((x) & 0xf0) >> 4]
21 
hex_byte_pack_upper(char * buf,u8 byte)22 static inline char *hex_byte_pack_upper(char *buf, u8 byte)
23 {
24 	*buf++ = hex_asc_upper_hi(byte);
25 	*buf++ = hex_asc_upper_lo(byte);
26 	return buf;
27 }
28 
29 extern int hex_to_bin(unsigned char ch);
30 extern int __must_check hex2bin(u8 *dst, const char *src, size_t count);
31 extern char *bin2hex(char *dst, const void *src, size_t count);
32 
33 bool mac_pton(const char *s, u8 *mac);
34 
35 #endif
36