| #ifndef __ASM_GENERIC_HASH_H |
| #define __ASM_GENERIC_HASH_H |
| |
| #include <linux/jhash.h> |
| |
| /** |
| * arch_fast_hash - Caclulates a hash over a given buffer that can have |
| * arbitrary size. This function will eventually use an |
| * architecture-optimized hashing implementation if |
| * available, and trades off distribution for speed. |
| * |
| * @data: buffer to hash |
| * @len: length of buffer in bytes |
| * @seed: start seed |
| * |
| * Returns 32bit hash. |
| */ |
| static inline u32 arch_fast_hash(const void *data, u32 len, u32 seed) |
| { |
| return jhash(data, len, seed); |
| } |
| |
| /** |
| * arch_fast_hash2 - Caclulates a hash over a given buffer that has a |
| * size that is of a multiple of 32bit words. This |
| * function will eventually use an architecture- |
| * optimized hashing implementation if available, |
| * and trades off distribution for speed. |
| * |
| * @data: buffer to hash (must be 32bit padded) |
| * @len: number of 32bit words |
| * @seed: start seed |
| * |
| * Returns 32bit hash. |
| */ |
| static inline u32 arch_fast_hash2(const u32 *data, u32 len, u32 seed) |
| { |
| return jhash2(data, len, seed); |
| } |
| |
| #endif /* __ASM_GENERIC_HASH_H */ |
