aboutsummaryrefslogtreecommitdiffstats
path: root/src/vnet/session/application.h
blob: de609d2d7a05f542850e35c8624beb0a5aa81f6c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
/*
 * Copyright (c) 2017 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef SRC_VNET_SESSION_APPLICATION_H_
#define SRC_VNET_SESSION_APPLICATION_H_

#include <vnet/session/session.h>
#include <vnet/session/segment_manager.h>
#include <vnet/session/application_namespace.h>

#define APP_DEBUG 0

#if APP_DEBUG > 0
#define APP_DBG(_fmt, _args...) clib_warning (_fmt, ##_args)
#else
#define APP_DBG(_fmt, _args...)
#endif

typedef struct _stream_session_cb_vft
{
  /** Notify server of new segment */
  int (*add_segment_callback) (u32 api_client_index,
			       const ssvm_private_t * ssvm_seg);
  /** Notify server of new segment */
  int (*del_segment_callback) (u32 api_client_index,
			       const ssvm_private_t * ssvm_seg);

  /** Notify server of newly accepted session */
  int (*session_accept_callback) (stream_session_t * new_session);

  /** Connection request callback */
  int (*session_connected_callback) (u32 app_wrk_index, u32 opaque,
				     stream_session_t * s, u8 code);

  /** Notify app that session is closing */
  void (*session_disconnect_callback) (stream_session_t * s);

  /** Notify app that session was reset */
  void (*session_reset_callback) (stream_session_t * s);

  /** Direct RX callback for built-in application */
  int (*builtin_app_rx_callback) (stream_session_t * session);

  /** Direct TX callback for built-in application */
  int (*builtin_app_tx_callback) (stream_session_t * session);

} session_cb_vft_t;

typedef struct app_worker_
{
  /** Worker index in global worker pool*/
  u32 wrk_index;

  /** Worker index in app's map pool */
  u32 wrk_map_index;

  /** Index of owning app */
  u32 app_index;

  /** Application listens for events on this svm queue */
  svm_msg_q_t *event_queue;

  /** Segment manager used for outgoing connects issued by the app */
  u32 connects_seg_manager;

  /** Lookup tables for listeners. Value is segment manager index */
  uword *listeners_table;

  /**
   * First segment manager has in the the first segment the application's
   * event fifo. Depending on what the app does, it may be either used for
   * a listener or for connects.
   */
  u32 first_segment_manager;
  u8 first_segment_manager_in_use;

  /*
   * Local "cut through" connections specific
   */

  /** Segment manager used for incoming "cut through" connects */
  u32 local_segment_manager;

  /** Pool of local listen sessions */
  local_session_t *local_listen_sessions;

  /** Pool of local sessions the app owns (as a server) */
  local_session_t *local_sessions;

  /** Hash table of the app's local connects */
  uword *local_connects;

  u8 app_is_builtin;
} app_worker_t;

typedef struct app_worker_map_
{
  u32 wrk_index;
} app_worker_map_t;

typedef struct application_
{
  /** App index in app pool */
  u32 app_index;

  /** Binary API connection index, ~0 if internal */
  u32 api_client_index;

  /** Flags */
  u32 flags;

  /** Callbacks: shoulder-taps for the server/client */
  session_cb_vft_t cb_fns;

  /** Segment manager properties. Shared by all segment managers */
  segment_manager_properties_t sm_properties;

  /** Pool of mappings that keep track of workers associated to this app */
  app_worker_map_t *worker_maps;

  /** Name registered by builtin apps */
  u8 *name;

  /** Namespace the application belongs to */
  u32 ns_index;

  u16 proxied_transports;

  /*
   * TLS Specific
   */

  /** Certificate to be used for listen sessions */
  u8 *tls_cert;

  /** PEM encoded key */
  u8 *tls_key;

  /** Preferred tls engine */
  u8 tls_engine;
} application_t;

typedef struct app_main_
{
  /**
   * Pool from which we allocate all applications
   */
  application_t *app_pool;

  /**
   * Pool of workers associated to apps
   */
  app_worker_t *workers;

  /**
   * Hash table of apps by api client index
   */
  uword *app_by_api_client_index;

  /**
   * Hash table of builtin apps by name
   */
  uword *app_by_name;
} app_main_t;

#define foreach_app_init_args			\
  _(u32, api_client_index)			\
  _(u8 *, name)					\
  _(u64 *, options)				\
  _(u8 *, namespace_id)				\
  _(session_cb_vft_t *, session_cb_vft)		\
  _(u32, app_index)				\

typedef struct app_init_args_
{
#define _(_type, _name) _type _name;
  foreach_app_init_args
#undef _
} app_init_args_t;

typedef struct _vnet_app_worker_add_del_args
{
  u32 app_index;		/**< App for which a new worker is requested */
  u32 wrk_index;		/**< Index to delete or return value if add */
  ssvm_private_t *segment;	/**< First segment in segment manager */
  svm_msg_q_t *evt_q;		/**< Worker message queue */
  u8 is_add;			/**< Flag set if addition */
} vnet_app_worker_add_del_args_t;

#define APP_INVALID_INDEX ((u32)~0)
#define APP_NS_INVALID_INDEX ((u32)~0)
#define APP_INVALID_SEGMENT_MANAGER_INDEX ((u32) ~0)

app_worker_t *app_worker_alloc (application_t * app);
int app_worker_alloc_and_init (application_t * app, app_worker_t ** wrk);
app_worker_t *app_worker_get (u32 wrk_index);
app_worker_t *app_worker_get_if_valid (u32 wrk_index);
void app_worker_free (app_worker_t * app_wrk);
int app_worker_start_listen (app_worker_t * app,
			     session_endpoint_t * tep,
			     session_handle_t * handle);
int app_worker_stop_listen (session_handle_t handle, u32 app_wrk_index);
int app_worker_open_session (app_worker_t * app, session_endpoint_t * tep,
			     u32 api_context);
segment_manager_t *app_worker_get_listen_segment_manager (app_worker_t *,
							  stream_session_t *);
segment_manager_t *app_worker_get_connect_segment_manager (app_worker_t *);
int app_worker_alloc_connects_segment_manager (app_worker_t * app);
int app_worker_add_segment_notify (u32 app_wrk_index, ssvm_private_t * fs);
u32 app_worker_n_listeners (app_worker_t * app);
stream_session_t *app_worker_first_listener (app_worker_t * app,
					     u8 fib_proto,
					     u8 transport_proto);
u8 app_worker_application_is_builtin (app_worker_t * app_wrk);
clib_error_t *vnet_app_worker_add_del (vnet_app_worker_add_del_args_t * a);

application_t *application_alloc (void);
int application_alloc_and_init (app_init_args_t * args);
void application_free (application_t * app);
application_t *application_get (u32 index);
application_t *application_get_if_valid (u32 index);
application_t *application_lookup (u32 api_client_index);
application_t *application_lookup_name (const u8 * name);
u32 application_index (application_t * app);
app_worker_t *application_get_worker (application_t * app, u32 wrk_index);
app_worker_t *application_get_default_worker (application_t * app);
int application_api_queue_is_full (application_t * app);


int application_is_proxy (application_t * app);
int application_is_builtin (application_t * app);
int application_is_builtin_proxy (application_t * app);
u32 application_session_table (application_t * app, u8 fib_proto);
u32 application_local_session_table (application_t * app);
u8 *application_name_from_index (u32 app_wrk_index);
u8 application_has_local_scope (application_t * app);
u8 application_has_global_scope (application_t * app);
u8 application_use_mq_for_ctrl (application_t * app);
void application_setup_proxy (application_t * app);
void application_remove_proxy (application_t * app);

segment_manager_properties_t *application_get_segment_manager_properties (u32
									  app_wrk_index);
segment_manager_properties_t
  * application_segment_manager_properties (application_t * app);

local_session_t *application_alloc_local_session (app_worker_t * app);
void application_free_local_session (app_worker_t * app,
				     local_session_t * ls);
local_session_t *application_get_local_session (app_worker_t * app,
						u32 session_index);
local_session_t *application_get_local_session_from_handle (session_handle_t
							    handle);
local_session_t
  * application_get_local_listen_session_from_handle (session_handle_t lh);
int application_start_local_listen (app_worker_t * server,
				    session_endpoint_t * sep,
				    session_handle_t * handle);
int application_stop_local_listen (session_handle_t lh, u32 app_wrk_index);
int application_local_session_connect (app_worker_t * client,
				       app_worker_t * server,
				       local_session_t * ll, u32 opaque);
int application_local_session_connect_notify (local_session_t * ls);
int application_local_session_disconnect (u32 app_wrk_index,
					  local_session_t * ls);
int application_local_session_disconnect_w_index (u32 app_wrk_index,
						  u32 ls_index);
void application_local_sessions_free (app_worker_t * app);

int application_send_event (app_worker_t * app, stream_session_t * s, u8 evt);
int application_lock_and_send_event (app_worker_t * app,
				     stream_session_t * s, u8 evt_type);

always_inline u32
local_session_id (local_session_t * ll)
{
  ASSERT (ll->app_wrk_index < (2 << 16) && ll->session_index < (2 << 16));
  return ((u32) ll->app_wrk_index << 16 | (u32) ll->session_index);
}

always_inline void
local_session_parse_id (u32 ls_id, u32 * app_wrk_index, u32 * session_index)
{
  *app_wrk_index = ls_id >> 16;
  *session_index = ls_id & 0xFFF;
}

always_inline void
local_session_parse_handle (session_handle_t handle, u32 * server_index,
			    u32 * session_index)
{
  u32 bottom;
  ASSERT ((handle >> 32) == SESSION_LOCAL_HANDLE_PREFIX);
  bottom = (handle & 0xFFFFFFFF);
  local_session_parse_id (bottom, server_index, session_index);
}

always_inline session_handle_t
application_local_session_handle (local_session_t * ls)
{
  return ((u64) SESSION_LOCAL_HANDLE_PREFIX << 32)
    | (u64) local_session_id (ls);
}

always_inline local_session_t *
application_get_local_listen_session (app_worker_t * app, u32 session_index)
{
  return pool_elt_at_index (app->local_listen_sessions, session_index);
}

always_inline local_session_t *
application_get_local_listener_w_handle (session_handle_t handle)
{
  u32 server_wrk_index, session_index;
  app_worker_t *app;
  local_session_parse_handle (handle, &server_wrk_index, &session_index);
  app = app_worker_get (server_wrk_index);
  return application_get_local_listen_session (app, session_index);
}

always_inline u8
application_local_session_listener_has_transport (local_session_t * ls)
{
  transport_proto_t tp;
  tp = session_type_transport_proto (ls->listener_session_type);
  return (tp != TRANSPORT_PROTO_NONE);
}

void mq_send_local_session_disconnected_cb (u32 app_wrk_index,
					    local_session_t * ls);

uword unformat_application_proto (unformat_input_t * input, va_list * args);

#endif /* SRC_VNET_SESSION_APPLICATION_H_ */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */