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Vector Packet Processing
flowhash_24_16.h
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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_24_16_H_
17 #define SRC_VPPINFRA_FLOWHASH_24_16_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[3];
30 
31 typedef struct {
32  u64 as_u64[3];
34 
35 typedef struct {
36  u64 as_u64[2];
38 
39 #define FLOWHASH_TYPE _24_16
41 #undef FLOWHASH_TYPE
42 
45 {
46 #ifdef clib_crc32c_uses_intrinsics
47  return clib_crc32c ((u8 *) &k->as_u64[0], 24);
48 #else
49  u64 val = 0;
50  val ^= k->as_u64[0];
51  val ^= k->as_u64[1];
52  val ^= k->as_u64[2];
53  return (u32)clib_xxhash (val);
54 #endif
55 }
56 
60 {
61  u8 val = 0;
62  val |= (a->as_u64[0] != b->as_u64[0]);
63  val |= (a->as_u64[1] != b->as_u64[1]);
64  val |= (a->as_u64[2] != b->as_u64[2]);
65  return val;
66 }
67 
71 {
72  dst->as_u64[0] = src->as_u64[0];
73  dst->as_u64[1] = src->as_u64[1];
74  dst->as_u64[2] = src->as_u64[2];
75 }
76 
77 #endif /* SRC_VPPINFRA_FLOWHASH_24_16_H_ */
flowhash_value_24_16_t
Definition: flowhash_24_16.h:35
clib.h
flowhash_cpy_key_24_16
static_always_inline void flowhash_cpy_key_24_16(flowhash_skey_24_16_t *dst, flowhash_lkey_24_16_t *src)
Definition: flowhash_24_16.h:69
flowhash_hash_24_16
static_always_inline u32 flowhash_hash_24_16(flowhash_lkey_24_16_t *k)
Definition: flowhash_24_16.h:44
flowhash_skey_24_16_t
Definition: flowhash_24_16.h:27
flowhash_template.h
static_always_inline
#define static_always_inline
Definition: clib.h:112
flowhash_lkey_24_16_t
Definition: flowhash_24_16.h:31
crc32.h
flowhash_cmp_key_24_16
static_always_inline u8 flowhash_cmp_key_24_16(flowhash_skey_24_16_t *a, flowhash_lkey_24_16_t *b)
Definition: flowhash_24_16.h:58
clib_xxhash
static u64 clib_xxhash(u64 key)
Definition: xxhash.h:58
src
vl_api_address_t src
Definition: gre.api:54
xxhash.h
flowhash_lkey_24_16_t::as_u64
u64 as_u64[3]
Definition: flowhash_24_16.h:32
u64
unsigned long u64
Definition: types.h:89
u32
unsigned int u32
Definition: types.h:88
dst
vl_api_ip4_address_t dst
Definition: pnat.api:41
as_u64
u64 as_u64
Definition: bihash_doc.h:63
b
vlib_buffer_t ** b
Definition: nat44_ei_out2in.c:717
u8
unsigned char u8
Definition: types.h:56
a
a
Definition: bitmap.h:544