src/vppinfra/flowhash_8_8.h

   1 /*
   2  * Copyright (c) 2012 Cisco and/or its affiliates.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #ifndef SRC_VPPINFRA_FLOWHASH_8_8_H_
  17 #define SRC_VPPINFRA_FLOWHASH_8_8_H_
  18
  19 #ifdef __included_flowhash_template_h__
  20 #undef __included_flowhash_template_h__
  21 #endif
  22
  23 #include <vppinfra/clib.h>
  24 #include <vppinfra/xxhash.h>
  25 #include <vppinfra/crc32.h>
  26
  27 typedef struct {
  28   u64 as_u64[1];
  29 } flowhash_skey_8_8_t;
  30
  31 typedef struct {
  32   u64 as_u64[1];
  33 } flowhash_lkey_8_8_t;
  34
  35 typedef struct {
  36   u64 as_u64[1];
  37 } flowhash_value_8_8_t;
  38
  39 #define FLOWHASH_TYPE _8_8
  40 #include <vppinfra/flowhash_template.h>
  41 #undef FLOWHASH_TYPE
  42
  43 static_always_inline
  44 u32 flowhash_hash_8_8(flowhash_lkey_8_8_t *k)
  45 {
  46 #ifdef clib_crc32c_uses_intrinsics
  47   return clib_crc32c ((u8 *) &k->as_u64[0], 8);
  48 #else
  49   return clib_xxhash (k->as_u64[0]);
  50 #endif
  51 }
  52
  53 static_always_inline
  54 u8 flowhash_cmp_key_8_8(flowhash_skey_8_8_t *a,
  55                           flowhash_lkey_8_8_t *b)
  56 {
  57   return a->as_u64[0] != b->as_u64[0];
  58 }
  59
  60 static_always_inline
  61 void flowhash_cpy_key_8_8(flowhash_skey_8_8_t *dst,
  62                                     flowhash_lkey_8_8_t *src)
  63 {
  64   dst->as_u64[0] = src->as_u64[0];
  65 }
  66
  67 #endif /* SRC_VPPINFRA_FLOWHASH_8_8_H_ */