diff options
Diffstat (limited to 'include/linux/crc32.h')
| -rw-r--r-- | include/linux/crc32.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/include/linux/crc32.h b/include/linux/crc32.h index 7d275c4fc011..9e8a032c1788 100644 --- a/include/linux/crc32.h +++ b/include/linux/crc32.h @@ -8,8 +8,8 @@ #include <linux/types.h> #include <linux/bitrev.h> -extern u32 crc32_le(u32 crc, unsigned char const *p, size_t len); -extern u32 crc32_be(u32 crc, unsigned char const *p, size_t len); +u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len); +u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len); /** * crc32_le_combine - Combine two crc32 check values into one. For two @@ -29,9 +29,14 @@ extern u32 crc32_be(u32 crc, unsigned char const *p, size_t len); * with the same initializer as crc1, and crc2 seed was 0. See * also crc32_combine_test(). */ -extern u32 crc32_le_combine(u32 crc1, u32 crc2, size_t len2); +u32 __attribute_const__ crc32_le_shift(u32 crc, size_t len); -extern u32 __crc32c_le(u32 crc, unsigned char const *p, size_t len); +static inline u32 crc32_le_combine(u32 crc1, u32 crc2, size_t len2) +{ + return crc32_le_shift(crc1, len2) ^ crc2; +} + +u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len); /** * __crc32c_le_combine - Combine two crc32c check values into one. For two @@ -51,7 +56,12 @@ extern u32 __crc32c_le(u32 crc, unsigned char const *p, size_t len); * seeded with the same initializer as crc1, and crc2 seed * was 0. See also crc32c_combine_test(). */ -extern u32 __crc32c_le_combine(u32 crc1, u32 crc2, size_t len2); +u32 __attribute_const__ __crc32c_le_shift(u32 crc, size_t len); + +static inline u32 __crc32c_le_combine(u32 crc1, u32 crc2, size_t len2) +{ + return __crc32c_le_shift(crc1, len2) ^ crc2; +} #define crc32(seed, data, length) crc32_le(seed, (unsigned char const *)(data), length) |