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Vector Packet Processing
api.h
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1 /*
2  *------------------------------------------------------------------
3  * api.h
4  *
5  * Copyright (c) 2009-2015 Cisco and/or its affiliates.
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at:
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  *------------------------------------------------------------------
18  */
19 
20 #ifndef included_api_h
21 #define included_api_h
22 
23 #include <stddef.h>
24 #include <vppinfra/error.h>
25 #include <svm/svm.h>
26 #include <vlib/vlib.h>
28 #include <vlib/unix/unix.h>
29 #include <vlibapi/api_common.h>
30 
31 /* *INDENT-OFF* */
32 typedef CLIB_PACKED
33 (struct
34  {
35  u8 endian; u8 wrapped;
36  u32 nitems;
37 }) vl_api_trace_file_header_t;
38 /* *INDENT-ON* */
39 
41  vl_api_trace_which_t which, FILE * fp);
42 
43 #define VLIB_API_INIT_FUNCTION(x) VLIB_DECLARE_INIT_FUNCTION(x,api_init)
44 
45 /* Call given init function: used for init function dependencies. */
46 #define vlib_call_api_init_function(vm, x) \
47  ({ \
48  extern vlib_init_function_t * _VLIB_INIT_FUNCTION_SYMBOL (x,api_init); \
49  vlib_init_function_t * _f = _VLIB_INIT_FUNCTION_SYMBOL (x,api_init); \
50  clib_error_t * _error = 0; \
51  if (! hash_get (vm->init_functions_called, _f)) \
52  { \
53  hash_set1 (vm->init_functions_called, _f); \
54  _error = _f (vm); \
55  } \
56  _error; \
57  })
58 
59 
60 #define _VL_MSG_API_FUNCTION_SYMBOL(x, type) \
61  _vl_msg_api_##type##_function_##x
62 
63 #define VL_MSG_API_FUNCTION_SYMBOL(x) \
64  _VL_MSG_API_FUNCTION_SYMBOL(x, reaper)
65 
66 #define VLIB_DECLARE_REAPER_FUNCTION(x, tag) \
67 vl_msg_api_init_function_t * _VL_MSG_API_FUNCTION_SYMBOL (x, tag) = x; \
68 static void __vl_msg_api_add_##tag##_function_##x (void) \
69  __attribute__((__constructor__)) ; \
70  \
71 static void __vl_msg_api_add_##tag##_function_##x (void) \
72 { \
73  api_main_t * am = &api_main; \
74  static _vl_msg_api_function_list_elt_t _vl_msg_api_function; \
75  _vl_msg_api_function.next_init_function \
76  = am->tag##_function_registrations; \
77  am->tag##_function_registrations = &_vl_msg_api_function; \
78  _vl_msg_api_function.f = &x; \
79 }
80 
81 #define VL_MSG_API_REAPER_FUNCTION(x) VLIB_DECLARE_REAPER_FUNCTION(x,reaper)
82 
83 /* Call reaper function with client index */
84 #define vl_msg_api_call_reaper_function(ci) \
85  ({ \
86  extern vlib_init_function_t * VLIB_INIT_FUNCTION_SYMBOL (reaper); \
87  vlib_init_function_t * _f = VLIB_INIT_FUNCTION_SYMBOL (reaper); \
88  clib_error_t * _error = 0; \
89  _error = _f (ci); \
90  })
91 
92 static inline u32
94 {
95  u8 *msg = (u8 *) msg_arg;
96 
97  msgbuf_t *header = (msgbuf_t *) (msg - offsetof (msgbuf_t, data));
98 
99  return clib_net_to_host_u32 (header->data_len);
100 }
101 
104 void vl_msg_api_trace (api_main_t * am, vl_api_trace_t * tp, void *msg);
106  int onoff);
109  u32 nitems);
111  void *the_msg, vlib_main_t * vm,
112  vlib_node_runtime_t * node);
114  vl_api_trace_which_t which);
115 void vl_msg_api_add_msg_name_crc (api_main_t * am, const char *string,
116  u32 id);
117 void vl_msg_api_add_version (api_main_t * am, const char *string,
118  u32 major, u32 minor, u32 patch);
119 /* node_serialize.c prototypes */
120 u8 *vlib_node_serialize (vlib_node_main_t * nm, u8 * vector,
121  u32 max_threads, int include_nexts,
122  int include_stats);
124 u32 vl_msg_api_get_msg_length (void *msg_arg);
125 
126 #endif /* included_api_h */
127 /*
128  * fd.io coding-style-patch-verification: ON
129  *
130  * Local Variables:
131  * eval: (c-set-style "gnu")
132  * End:
133  */
vlib_node_t ** vlib_node_unserialize(u8 *vector)
u8 * vlib_node_serialize(vlib_node_main_t *nm, u8 *vector, u32 max_threads, int include_nexts, int include_stats)
void vl_msg_api_add_version(api_main_t *am, const char *string, u32 major, u32 minor, u32 patch)
Definition: api_shared.c:934
int vl_msg_api_trace_free(api_main_t *am, vl_api_trace_which_t which)
Definition: api_shared.c:154
int vl_msg_api_tx_trace_enabled(api_main_t *am)
Definition: api_shared.c:57
vl_api_trace_t * vl_msg_api_trace_get(api_main_t *am, vl_api_trace_which_t which)
Definition: api_shared.c:766
void vl_msg_api_handler_with_vm_node(api_main_t *am, void *the_msg, vlib_main_t *vm, vlib_node_runtime_t *node)
Definition: api_shared.c:468
API main structure, used by both vpp and binary API clients.
Definition: api_common.h:198
int vl_msg_api_trace_save(api_main_t *am, vl_api_trace_which_t which, FILE *fp)
Definition: api_shared.c:191
int vl_msg_api_trace_onoff(api_main_t *am, vl_api_trace_which_t which, int onoff)
Definition: api_shared.c:112
API trace state.
Definition: api_common.h:87
void vl_msg_api_trace(api_main_t *am, vl_api_trace_t *tp, void *msg)
Definition: api_shared.c:66
void vl_msg_api_add_msg_name_crc(api_main_t *am, const char *string, u32 id)
Definition: api_shared.c:916
unsigned int u32
Definition: types.h:88
u32 data_len
message length not including header
Definition: api_common.h:137
Message header structure.
Definition: api_common.h:134
typedef CLIB_PACKED(struct{u8 endian;u8 wrapped;u32 nitems;}) vl_api_trace_file_header_t
unsigned char u8
Definition: types.h:56
static u32 vl_msg_api_get_msg_length_inline(void *msg_arg)
Definition: api.h:93
int vl_msg_api_rx_trace_enabled(api_main_t *am)
Definition: api_shared.c:51
vl_api_trace_which_t
Trace RX / TX enum.
Definition: api_common.h:99
u32 vl_msg_api_get_msg_length(void *msg_arg)
Definition: api_shared.c:634
int vl_msg_api_trace_configure(api_main_t *am, vl_api_trace_which_t which, u32 nitems)
Definition: api_shared.c:322