siphash_2u64
verf = siphash_2u64(now.tv_sec, now.tv_nsec, &nn->siphash_key);
u64 siphash_2u64(const u64 a, const u64 b, const siphash_key_t *key);
return siphash_2u64((u64)b << 32 | a, (u64)d << 32 | c, key);
return siphash_2u64(le64_to_cpu(data[0]), le64_to_cpu(data[1]),
EXPORT_SYMBOL(siphash_2u64);
chk(siphash_2u64(0x0706050403020100ULL, 0x0f0e0d0c0b0a0908ULL,
hash = siphash_2u64(first, second, &test_key_siphash);
hash = siphash_2u64(first, second, &test_key_siphash);