FD.io VPP  v20.09-64-g4f7b92f0a
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 <vlib/vlib.h>
20 
21 /* ip table add delete callback */
22 typedef struct _vnet_ip_table_function_list_elt
23 {
24  struct _vnet_ip_table_function_list_elt *next_ip_table_function;
25  clib_error_t *(*fp) (struct vnet_main_t * vnm, u32 table_id, u32 flags);
26 } _vnet_ip_table_function_list_elt_t;
27 
29 {
33 #define VNET_IP_TABLE_FUNC_N_PRIO ((vnet_ip_table_function_priority_t)VNET_IP_TABLE_FUNC_PRIORITY_HIGH+1)
34 
35 #ifndef CLIB_MARCH_VARIANT
36 #define _VNET_IP_TABLE_FUNCTION_DECL_PRIO(f,tag,p) \
37  \
38 static void __vnet_ip_table_function_init_##tag##_##f (void) \
39  __attribute__((__constructor__)) ; \
40  \
41 static void __vnet_ip_table_function_init_##tag##_##f (void) \
42 { \
43  vnet_main_t * vnm = vnet_get_main(); \
44  static _vnet_ip_table_function_list_elt_t init_function; \
45  init_function.next_ip_table_function = vnm->tag##_functions[p]; \
46  vnm->tag##_functions[p] = &init_function; \
47  init_function.fp = (void *) &f; \
48 } \
49 static void __vnet_ip_table_function_deinit_##tag##_##f (void) \
50  __attribute__((__destructor__)) ; \
51  \
52 static void __vnet_ip_table_function_deinit_##tag##_##f (void) \
53 { \
54  vnet_main_t * vnm = vnet_get_main(); \
55  _vnet_ip_table_function_list_elt_t *next; \
56  if (vnm->tag##_functions[p]->fp == f) \
57  { \
58  vnm->tag##_functions[p] = \
59  vnm->tag##_functions[p]->next_ip_table_function; \
60  return; \
61  } \
62  next = vnm->tag##_functions[p]; \
63  while (next->next_ip_table_function) \
64  { \
65  if (next->next_ip_table_function->fp == f) \
66  { \
67  next->next_ip_table_function = \
68  next->next_ip_table_function->next_ip_table_function; \
69  return; \
70  } \
71  next = next->next_ip_table_function; \
72  } \
73 }
74 #else
75 /* create unused pointer to silence compiler warnings and get whole
76  function optimized out */
77 #define _VNET_IP_TABLE_FUNCTION_DECL_PRIO(f,tag,p) \
78 static __clib_unused void * __clib_unused_##f = f;
79 #endif
80 
81 #define _VNET_IP_TABLE_FUNCTION_DECL(f,tag) \
82  _VNET_IP_TABLE_FUNCTION_DECL_PRIO(f,tag,VNET_ITF_FUNC_PRIORITY_LOW)
83 
84 #define VNET_IP_TABLE_ADD_DEL_FUNCTION(f) \
85  _VNET_IP_TABLE_FUNCTION_DECL(f,ip_table_add_del)
86 
87 #endif /* included_ip_table_h */
88 
89 /*
90  * fd.io coding-style-patch-verification: ON
91  *
92  * Local Variables:
93  * eval: (c-set-style "gnu")
94  * End:
95  */
vl_api_wireguard_peer_flags_t flags
Definition: wireguard.api:103
vnet_ip_table_function_priority_t_
Definition: ip_table.h:28
unsigned int u32
Definition: types.h:88
u32 table_id
Definition: wireguard.api:100
enum vnet_ip_table_function_priority_t_ vnet_ip_table_function_priority_t