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/*
* Copyright (c) 2016 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#undef BIHASH_TYPE
#undef BIHASH_KVP_PER_PAGE
#define BIHASH_TYPE _40_8
#define BIHASH_KVP_PER_PAGE 4
#ifndef __included_bihash_40_8_h__
#define __included_bihash_40_8_h__
#include <vppinfra/crc32.h>
#include <vppinfra/heap.h>
#include <vppinfra/format.h>
#include <vppinfra/pool.h>
#include <vppinfra/xxhash.h>
typedef struct
{
u64 key[5];
u64 value;
} clib_bihash_kv_40_8_t;
static inline int
clib_bihash_is_free_40_8 (const clib_bihash_kv_40_8_t * v)
{
/* Free values are memset to 0xff, check a bit... */
if (v->key[0] == ~0ULL && v->value == ~0ULL)
return 1;
return 0;
}
static inline u64
clib_bihash_hash_40_8 (const clib_bihash_kv_40_8_t * v)
{
#ifdef clib_crc32c_uses_intrinsics
return clib_crc32c ((u8 *) v->key, 40);
#else
u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2] ^ v->key[3] ^ v->key[4];
return clib_xxhash (tmp);
#endif
}
static inline u8 *
format_bihash_kvp_40_8 (u8 * s, va_list * args)
{
clib_bihash_kv_40_8_t *v = va_arg (*args, clib_bihash_kv_40_8_t *);
s = format (s, "key %llu %llu %llu %llu %llu value %llu", v->key[0],
v->key[1], v->key[2], v->key[3], v->key[4], v->value);
return s;
}
static inline int
clib_bihash_key_compare_40_8 (u64 * a, u64 * b)
{
#if defined (CLIB_HAVE_VEC512)
u64x8 v;
v = u64x8_load_unaligned (a) ^ u64x8_load_unaligned (b);
return (u64x8_is_zero_mask (v) & 0x1f) == 0;
#elif defined (CLIB_HAVE_VEC256)
u64x4 v = { a[4] ^ b[4], 0, 0, 0 };
v |= u64x4_load_unaligned (a) ^ u64x4_load_unaligned (b);
return u64x4_is_all_zero (v);
#elif defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE)
u64x2 v = { a[4] ^ b[4], 0 };
v |= u64x2_load_unaligned (a) ^ u64x2_load_unaligned (b);
v |= u64x2_load_unaligned (a + 2) ^ u64x2_load_unaligned (b + 2);
return u64x2_is_all_zero (v);
#else
return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]) | (a[3] ^ b[3])
| (a[4] ^ b[4])) == 0;
#endif
}
#undef __included_bihash_template_h__
#include <vppinfra/bihash_template.h>
#endif /* __included_bihash_40_8_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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