move Rust sources to top level, C sources into c_src

[bcachefs-tools-debian] / include / linux / siphash.h

diff --git a/include/linux/siphash.h b/include/linux/siphash.h
deleted file mode 100644 (file)
index bf21591..0000000
--- a/include/linux/siphash.h
+++ /dev/null
@@ -1,145 +0,0 @@
-/* Copyright (C) 2016 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
- *
- * This file is provided under a dual BSD/GPLv2 license.
- *
- * SipHash: a fast short-input PRF
- * https://131002.net/siphash/
- *
- * This implementation is specifically for SipHash2-4 for a secure PRF
- * and HalfSipHash1-3/SipHash1-3 for an insecure PRF only suitable for
- * hashtables.
- */
-
-#ifndef _LINUX_SIPHASH_H
-#define _LINUX_SIPHASH_H
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#define SIPHASH_ALIGNMENT __alignof__(u64)
-typedef struct {
-       u64 key[2];
-} siphash_key_t;
-
-static inline bool siphash_key_is_zero(const siphash_key_t *key)
-{
-       return !(key->key[0] | key->key[1]);
-}
-
-u64 __siphash_aligned(const void *data, size_t len, const siphash_key_t *key);
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
-u64 __siphash_unaligned(const void *data, size_t len, const siphash_key_t *key);
-#endif
-
-u64 siphash_1u64(const u64 a, const siphash_key_t *key);
-u64 siphash_2u64(const u64 a, const u64 b, const siphash_key_t *key);
-u64 siphash_3u64(const u64 a, const u64 b, const u64 c,
-                const siphash_key_t *key);
-u64 siphash_4u64(const u64 a, const u64 b, const u64 c, const u64 d,
-                const siphash_key_t *key);
-u64 siphash_1u32(const u32 a, const siphash_key_t *key);
-u64 siphash_3u32(const u32 a, const u32 b, const u32 c,
-                const siphash_key_t *key);
-
-static inline u64 siphash_2u32(const u32 a, const u32 b,
-                              const siphash_key_t *key)
-{
-       return siphash_1u64((u64)b << 32 | a, key);
-}
-static inline u64 siphash_4u32(const u32 a, const u32 b, const u32 c,
-                              const u32 d, const siphash_key_t *key)
-{
-       return siphash_2u64((u64)b << 32 | a, (u64)d << 32 | c, key);
-}
-
-
-static inline u64 ___siphash_aligned(const __le64 *data, size_t len,
-                                    const siphash_key_t *key)
-{
-       if (__builtin_constant_p(len) && len == 4)
-               return siphash_1u32(le32_to_cpup((const __le32 *)data), key);
-       if (__builtin_constant_p(len) && len == 8)
-               return siphash_1u64(le64_to_cpu(data[0]), key);
-       if (__builtin_constant_p(len) && len == 16)
-               return siphash_2u64(le64_to_cpu(data[0]), le64_to_cpu(data[1]),
-                                   key);
-       if (__builtin_constant_p(len) && len == 24)
-               return siphash_3u64(le64_to_cpu(data[0]), le64_to_cpu(data[1]),
-                                   le64_to_cpu(data[2]), key);
-       if (__builtin_constant_p(len) && len == 32)
-               return siphash_4u64(le64_to_cpu(data[0]), le64_to_cpu(data[1]),
-                                   le64_to_cpu(data[2]), le64_to_cpu(data[3]),
-                                   key);
-       return __siphash_aligned(data, len, key);
-}
-
-/**
- * siphash - compute 64-bit siphash PRF value
- * @data: buffer to hash
- * @size: size of @data
- * @key: the siphash key
- */
-static inline u64 siphash(const void *data, size_t len,
-                         const siphash_key_t *key)
-{
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
-       if (!IS_ALIGNED((unsigned long)data, SIPHASH_ALIGNMENT))
-               return __siphash_unaligned(data, len, key);
-#endif
-       return ___siphash_aligned(data, len, key);
-}
-
-#define HSIPHASH_ALIGNMENT __alignof__(unsigned long)
-typedef struct {
-       unsigned long key[2];
-} hsiphash_key_t;
-
-u32 __hsiphash_aligned(const void *data, size_t len,
-                      const hsiphash_key_t *key);
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
-u32 __hsiphash_unaligned(const void *data, size_t len,
-                        const hsiphash_key_t *key);
-#endif
-
-u32 hsiphash_1u32(const u32 a, const hsiphash_key_t *key);
-u32 hsiphash_2u32(const u32 a, const u32 b, const hsiphash_key_t *key);
-u32 hsiphash_3u32(const u32 a, const u32 b, const u32 c,
-                 const hsiphash_key_t *key);
-u32 hsiphash_4u32(const u32 a, const u32 b, const u32 c, const u32 d,
-                 const hsiphash_key_t *key);
-
-static inline u32 ___hsiphash_aligned(const __le32 *data, size_t len,
-                                     const hsiphash_key_t *key)
-{
-       if (__builtin_constant_p(len) && len == 4)
-               return hsiphash_1u32(le32_to_cpu(data[0]), key);
-       if (__builtin_constant_p(len) && len == 8)
-               return hsiphash_2u32(le32_to_cpu(data[0]), le32_to_cpu(data[1]),
-                                    key);
-       if (__builtin_constant_p(len) && len == 12)
-               return hsiphash_3u32(le32_to_cpu(data[0]), le32_to_cpu(data[1]),
-                                    le32_to_cpu(data[2]), key);
-       if (__builtin_constant_p(len) && len == 16)
-               return hsiphash_4u32(le32_to_cpu(data[0]), le32_to_cpu(data[1]),
-                                    le32_to_cpu(data[2]), le32_to_cpu(data[3]),
-                                    key);
-       return __hsiphash_aligned(data, len, key);
-}
-
-/**
- * hsiphash - compute 32-bit hsiphash PRF value
- * @data: buffer to hash
- * @size: size of @data
- * @key: the hsiphash key
- */
-static inline u32 hsiphash(const void *data, size_t len,
-                          const hsiphash_key_t *key)
-{
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
-       if (!IS_ALIGNED((unsigned long)data, HSIPHASH_ALIGNMENT))
-               return __hsiphash_unaligned(data, len, key);
-#endif
-       return ___hsiphash_aligned(data, len, key);
-}
-
-#endif /* _LINUX_SIPHASH_H */