1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
8  * and HalfSipHash1-3/SipHash1-3 for an insecure PRF only suitable for
20 #define SIPROUND SIPHASH_PERMUTATION(v0, v1, v2, v3)
26 	u64 v3 = SIPHASH_CONST_3; \
28 	v3 ^= key->key[1]; \
34 	v3 ^= b; \
43 	return (v0 ^ v1) ^ (v2 ^ v3);
54 		v3 ^= m;  in __siphash_aligned()
69 	case 3: b |= ((u64)end[2]) << 16; fallthrough;  in __siphash_aligned()
87 		v3 ^= m;  in __siphash_unaligned()
102 	case 3: b |= ((u64)end[2]) << 16; fallthrough;  in __siphash_unaligned()
119 	v3 ^= first;  in siphash_1u64()
136 	v3 ^= first;  in siphash_2u64()
140 	v3 ^= second;  in siphash_2u64()
149  * siphash_3u64 - compute 64-bit siphash PRF value of 3 u64
159 	v3 ^= first;  in siphash_3u64()
163 	v3 ^= second;  in siphash_3u64()
167 	v3 ^= third;  in siphash_3u64()
187 	v3 ^= first;  in siphash_4u64()
191 	v3 ^= second;  in siphash_4u64()
195 	v3 ^= third;  in siphash_4u64()
199 	v3 ^= forth;  in siphash_4u64()
220 	v3 ^= combined;  in siphash_3u32()
230 /* Note that on 64-bit, we make HalfSipHash1-3 actually be SipHash1-3, for
231  * performance reasons. On 32-bit, below, we actually implement HalfSipHash1-3.
237 	v3 ^= b; \
244 	return (v0 ^ v1) ^ (v2 ^ v3);
255 		v3 ^= m;  in __hsiphash_aligned()
269 	case 3: b |= ((u64)end[2]) << 16; fallthrough;  in __hsiphash_aligned()
288 		v3 ^= m;  in __hsiphash_unaligned()
302 	case 3: b |= ((u64)end[2]) << 16; fallthrough;  in __hsiphash_unaligned()
334 	v3 ^= combined;  in hsiphash_2u32()
342  * hsiphash_3u32 - compute 32-bit hsiphash PRF value of 3 u32
353 	v3 ^= combined;  in hsiphash_3u32()
374 	v3 ^= combined;  in hsiphash_4u32()
378 	v3 ^= combined;  in hsiphash_4u32()
385 #define HSIPROUND HSIPHASH_PERMUTATION(v0, v1, v2, v3)
391 	u32 v3 = HSIPHASH_CONST_3; \
393 	v3 ^= key->key[1]; \
399 	v3 ^= b; \
406 	return v1 ^ v3;
417 		v3 ^= m;  in __hsiphash_aligned()
422 	case 3: b |= ((u32)end[2]) << 16; fallthrough;  in __hsiphash_aligned()
440 		v3 ^= m;  in __hsiphash_unaligned()
445 	case 3: b |= ((u32)end[2]) << 16; fallthrough;  in __hsiphash_unaligned()
461 	v3 ^= first;  in hsiphash_1u32()
477 	v3 ^= first;  in hsiphash_2u32()
480 	v3 ^= second;  in hsiphash_2u32()
488  * hsiphash_3u32 - compute 32-bit hsiphash PRF value of 3 u32
498 	v3 ^= first;  in hsiphash_3u32()
501 	v3 ^= second;  in hsiphash_3u32()
504 	v3 ^= third;  in hsiphash_3u32()
523 	v3 ^= first;  in hsiphash_4u32()
526 	v3 ^= second;  in hsiphash_4u32()
529 	v3 ^= third;  in hsiphash_4u32()
532 	v3 ^= forth;  in hsiphash_4u32()