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/*
* Copyright (c) 2017 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
#undef BIHASH_32_64_SVM
#undef BIHASH_ENABLE_STATS
#define BIHASH_TYPE _vec8_8
#define BIHASH_KVP_PER_PAGE 4
#ifndef __included_bihash_vec8_8_h__
#define __included_bihash_vec8_8_h__
#include <vppinfra/heap.h>
#include <vppinfra/format.h>
#include <vppinfra/pool.h>
#include <vppinfra/xxhash.h>
#include <vppinfra/crc32.h>
/** 8 octet key, 8 octet key value pair */
typedef struct
{
u64 key; /**< the key */
u64 value; /**< the value */
} clib_bihash_kv_vec8_8_t;
/** Decide if a clib_bihash_kv_vec8_8_t instance is free
@param v- pointer to the (key,value) pair
*/
static inline int
clib_bihash_is_free_vec8_8 (clib_bihash_kv_vec8_8_t * v)
{
if (v->key == ~0ULL && v->value == ~0ULL)
return 1;
return 0;
}
/** Hash a clib_bihash_kv_vec8_8_t instance
@param v - pointer to the (key,value) pair, hash the key (only)
*/
static inline u64
clib_bihash_hash_vec8_8 (clib_bihash_kv_vec8_8_t * v)
{
u8 *keyp = (u8 *) (v->key);
/* Note: to torture-test linear scan, make this fn return a constant */
#ifdef clib_crc32c_uses_intrinsics
return clib_crc32c (keyp, vec_len (keyp));
#else
{
int i, j;
u64 sum = 0;
for (i = 0, j = 0; i < vec_len (keyp); i++)
{
sum ^= keyp[i] << (j * 8);
j++;
if (j == 4)
j = 0;
}
return clib_xxhash (sum);
}
#endif
}
/** Format a clib_bihash_kv_vec8_8_t instance
@param s - u8 * vector under construction
@param args (vararg) - the (key,value) pair to format
@return s - the u8 * vector under construction
*/
static inline u8 *
format_bihash_kvp_vec8_8 (u8 * s, va_list * args)
{
clib_bihash_kv_vec8_8_t *v = va_arg (*args, clib_bihash_kv_vec8_8_t *);
s = format (s, "key %U value %llu",
format_hex_bytes, v->key, vec_len ((u8 *) (v->key)), v->value);
return s;
}
/** Compare two clib_bihash_kv_vec8_8_t instances
@param a - first key
@param b - second key
*/
static inline int
clib_bihash_key_compare_vec8_8 (u64 a_arg, u64 b_arg)
{
u8 *a = (u8 *) a_arg;
u8 *b = (u8 *) b_arg;
if (a_arg == ~0ULL || b_arg == ~0ULL)
return 0;
if (vec_len (a) != vec_len (b))
return 0;
return memcmp (a, b, vec_len (a)) == 0;
}
#undef __included_bihash_template_h__
#include <vppinfra/bihash_template.h>
#endif /* __included_bihash_vec8_8_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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