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Vector Packet Processing
ip_table.h
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1 /*
2  * Copyright (c) 2020 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 included_ip_table_h
17 #define included_ip_table_h
18 
19 #include <vnet/vnet.h>
20 
21 typedef enum vnet_ip_table_function_priority_t_
22 {
23  VNET_IP_TABLE_FUNC_PRIORITY_LOW,
24  VNET_IP_TABLE_FUNC_PRIORITY_HIGH,
25 } vnet_ip_table_function_priority_t;
26 #define VNET_IP_TABLE_FUNC_N_PRIO ((vnet_ip_table_function_priority_t)VNET_IP_TABLE_FUNC_PRIORITY_HIGH+1)
27 
28 #ifndef CLIB_MARCH_VARIANT
29 #define _VNET_IP_TABLE_FUNCTION_DECL_PRIO(f,tag,p) \
30  \
31 static void __vnet_ip_table_function_init_##tag##_##f (void) \
32  __attribute__((__constructor__)) ; \
33  \
34 static void __vnet_ip_table_function_init_##tag##_##f (void) \
35 { \
36  vnet_main_t * vnm = vnet_get_main(); \
37  static _vnet_ip_table_function_list_elt_t init_function; \
38  init_function.next_ip_table_function = vnm->tag##_functions[p]; \
39  vnm->tag##_functions[p] = &init_function; \
40  init_function.fp = (void *) &f; \
41 } \
42 static void __vnet_ip_table_function_deinit_##tag##_##f (void) \
43  __attribute__((__destructor__)) ; \
44  \
45 static void __vnet_ip_table_function_deinit_##tag##_##f (void) \
46 { \
47  vnet_main_t * vnm = vnet_get_main(); \
48  _vnet_ip_table_function_list_elt_t *next; \
49  if (vnm->tag##_functions[p]->fp == f) \
50  { \
51  vnm->tag##_functions[p] = \
52  vnm->tag##_functions[p]->next_ip_table_function; \
53  return; \
54  } \
55  next = vnm->tag##_functions[p]; \
56  while (next->next_ip_table_function) \
57  { \
58  if (next->next_ip_table_function->fp == f) \
59  { \
60  next->next_ip_table_function = \
61  next->next_ip_table_function->next_ip_table_function; \
62  return; \
63  } \
64  next = next->next_ip_table_function; \
65  } \
66 }
67 #else
68 /* create unused pointer to silence compiler warnings and get whole
69  function optimized out */
70 #define _VNET_IP_TABLE_FUNCTION_DECL_PRIO(f,tag,p) \
71 static __clib_unused void * __clib_unused_##f = f;
72 #endif
73 
74 #define _VNET_IP_TABLE_FUNCTION_DECL(f,tag) \
75  _VNET_IP_TABLE_FUNCTION_DECL_PRIO(f,tag,VNET_ITF_FUNC_PRIORITY_LOW)
76 
77 #define VNET_IP_TABLE_ADD_DEL_FUNCTION(f) \
78  _VNET_IP_TABLE_FUNCTION_DECL(f,ip_table_add_del)
79 
80 #endif /* included_ip_table_h */
81 
82 /*
83  * fd.io coding-style-patch-verification: ON
84  *
85  * Local Variables:
86  * eval: (c-set-style "gnu")
87  * End:
88  */
VNET_IP_TABLE_FUNC_PRIORITY_HIGH
@ VNET_IP_TABLE_FUNC_PRIORITY_HIGH
Definition: ip_table.h:24
vnet_ip_table_function_priority_t_
vnet_ip_table_function_priority_t_
Definition: ip_table.h:21
vnet_ip_table_function_priority_t
enum vnet_ip_table_function_priority_t_ vnet_ip_table_function_priority_t
VNET_IP_TABLE_FUNC_PRIORITY_LOW
@ VNET_IP_TABLE_FUNC_PRIORITY_LOW
Definition: ip_table.h:23
vnet.h