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Vector Packet Processing
hash_lookup_types.h
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1 /*
2  *------------------------------------------------------------------
3  * Copyright (c) 2017 Cisco and/or its affiliates.
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at:
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *------------------------------------------------------------------
16  */
17 
18 #ifndef _ACL_HASH_LOOKUP_TYPES_H_
19 #define _ACL_HASH_LOOKUP_TYPES_H_
20 
21 #include "types.h"
22 
23 /* The structure representing the single entry with hash representation */
24 typedef struct {
26  /* these two entries refer to the original ACL# and rule# within that ACL */
29 
31 
34 
35 /*
36  * The structure holding the information necessary for the hash-based ACL operation
37  */
38 typedef struct {
39  /* hash ACL applied on these lookup contexts */
42  /* a boolean flag set when the hash acl info is initialized */
45 
46 
47 typedef struct {
54 
55 typedef struct {
56  /* original non-compiled ACL */
59  /* the index of the hash_ace_info_t */
61  /* applied mask type index */
63  /*
64  * in case of the same key having multiple entries,
65  * this holds the index of the next entry.
66  */
68  /*
69  * previous entry in the list of the chained ones,
70  * if ~0 then this is entry in the hash.
71  */
73  /*
74  * chain tail, if this is the first entry
75  */
77  /*
78  * Collision rule vector for matching - set only on head entry
79  */
81  /*
82  * number of hits on this entry
83  */
85  /*
86  * acl position in vector of ACLs within lookup context
87  */
89  /*
90  * Action of this applied ACE
91  */
94 
95 typedef struct {
96 
97  /* applied ACLs so we can track them independently from main ACL module */
100 
101 
102 typedef union {
104  struct {
108  u8 reserved_flags:8;
109  };
111 
112 
113 typedef struct {
115  /* first rule # for this mask */
117  /* Debug Information */
121 
122 
123 #define CT_ASSERT_EQUAL(name, x,y) typedef int assert_ ## name ## _compile_time_assertion_failed[((x) == (y))-1]
124 
125 CT_ASSERT_EQUAL(hash_acl_lookup_value_t_is_u64, sizeof(hash_acl_lookup_value_t), sizeof(u64));
126 
127 #undef CT_ASSERT_EQUAL
128 
129 #endif
u32 acl_index
unsigned long u64
Definition: types.h:89
u8 action
u32 hash_ace_info_index
unsigned char u8
Definition: types.h:56
u32 acl_position
u32 next_applied_entry_index
unsigned int u32
Definition: types.h:88
collision_match_rule_t * colliding_rules
u32 mask_type_index
unsigned short u16
Definition: types.h:57
u64 hitcount
hash_ace_info_t * rules
u32 prev_applied_entry_index
#define CT_ASSERT_EQUAL(name, x, y)
u32 tail_applied_entry_index
u32 ace_index