include/linux/hex.h

   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
  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
  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