2 * Copyright (c) 2017 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:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
16 #ifndef SRC_VNET_SESSION_APPLICATION_H_
17 #define SRC_VNET_SESSION_APPLICATION_H_
19 #include <vnet/session/session.h>
20 #include <vnet/session/segment_manager.h>
21 #include <vnet/session/application_namespace.h>
26 #define APP_DBG(_fmt, _args...) clib_warning (_fmt, ##_args)
28 #define APP_DBG(_fmt, _args...)
31 typedef struct _stream_session_cb_vft
33 /** Notify server of new segment */
34 int (*add_segment_callback) (u32 api_client_index,
35 const ssvm_private_t * ssvm_seg);
36 /** Notify server of new segment */
37 int (*del_segment_callback) (u32 api_client_index,
38 const ssvm_private_t * ssvm_seg);
40 /** Notify server of newly accepted session */
41 int (*session_accept_callback) (stream_session_t * new_session);
43 /** Connection request callback */
44 int (*session_connected_callback) (u32 app_wrk_index, u32 opaque,
45 stream_session_t * s, u8 code);
47 /** Notify app that session is closing */
48 void (*session_disconnect_callback) (stream_session_t * s);
50 /** Notify app that session was reset */
51 void (*session_reset_callback) (stream_session_t * s);
53 /** Direct RX callback for built-in application */
54 int (*builtin_app_rx_callback) (stream_session_t * session);
56 /** Direct TX callback for built-in application */
57 int (*builtin_app_tx_callback) (stream_session_t * session);
61 typedef struct app_worker_
63 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
65 /** Worker index in global worker pool*/
68 /** Worker index in app's map pool */
71 /** Index of owning app */
74 /** Application listens for events on this svm queue */
75 svm_msg_q_t *event_queue;
77 /** Segment manager used for outgoing connects issued by the app */
78 u32 connects_seg_manager;
80 /** Lookup tables for listeners. Value is segment manager index */
81 uword *listeners_table;
84 * First segment manager has in the the first segment the application's
85 * event fifo. Depending on what the app does, it may be either used for
86 * a listener or for connects.
88 u32 first_segment_manager;
89 u8 first_segment_manager_in_use;
92 * Local "cut through" connections specific
95 /** Segment manager used for incoming "cut through" connects */
96 u32 local_segment_manager;
98 /** Pool of local sessions the app owns (as a server) */
99 local_session_t *local_sessions;
101 /** Hash table of the app's local connects */
102 uword *local_connects;
104 /** API index for the worker. Needed for multi-process apps */
110 typedef struct app_worker_map_
115 typedef struct app_listener_
117 clib_bitmap_t *workers; /**< workers accepting connections */
118 u32 accept_rotor; /**< last worker to accept a connection */
122 typedef struct application_
124 /** App index in app pool */
127 /** Binary API connection index of app process that created the app,
129 u32 api_client_index;
134 /** Callbacks: shoulder-taps for the server/client */
135 session_cb_vft_t cb_fns;
137 /** Segment manager properties. Shared by all segment managers */
138 segment_manager_properties_t sm_properties;
140 /** Pool of mappings that keep track of workers associated to this app */
141 app_worker_map_t *worker_maps;
143 /** Name registered by builtin apps */
146 /** Namespace the application belongs to */
149 u16 proxied_transports;
151 /** Pool of listeners for the app */
152 app_listener_t *listeners;
154 /** Pool of local listeners for app */
155 app_listener_t *local_listeners;
157 /** Pool of local listen sessions */
158 local_session_t *local_listen_sessions;
164 /** Certificate to be used for listen sessions */
167 /** PEM encoded key */
170 /** Preferred tls engine */
175 typedef struct app_main_
178 * Pool from which we allocate all applications
180 application_t *app_pool;
183 * Pool of workers associated to apps
185 app_worker_t *workers;
188 * Hash table of apps by api client index
190 uword *app_by_api_client_index;
193 * Hash table of builtin apps by name
198 #define foreach_app_init_args \
199 _(u32, api_client_index) \
202 _(u8 *, namespace_id) \
203 _(session_cb_vft_t *, session_cb_vft) \
206 typedef struct app_init_args_
208 #define _(_type, _name) _type _name;
209 foreach_app_init_args
213 typedef struct _vnet_app_worker_add_del_args
215 u32 app_index; /**< App for which a new worker is requested */
216 u32 wrk_index; /**< Index to delete or return value if add */
217 u32 api_index; /**< Binary API client index */
218 ssvm_private_t *segment; /**< First segment in segment manager */
219 svm_msg_q_t *evt_q; /**< Worker message queue */
220 u8 is_add; /**< Flag set if addition */
221 } vnet_app_worker_add_del_args_t;
223 #define APP_INVALID_INDEX ((u32)~0)
224 #define APP_NS_INVALID_INDEX ((u32)~0)
225 #define APP_INVALID_SEGMENT_MANAGER_INDEX ((u32) ~0)
227 app_worker_t *app_worker_alloc (application_t * app);
228 int app_worker_alloc_and_init (application_t * app, app_worker_t ** wrk);
229 app_worker_t *app_worker_get (u32 wrk_index);
230 app_worker_t *app_worker_get_if_valid (u32 wrk_index);
231 application_t *app_worker_get_app (u32 wrk_index);
232 void app_worker_free (app_worker_t * app_wrk);
233 int app_worker_open_session (app_worker_t * app, session_endpoint_t * tep,
235 segment_manager_t *app_worker_get_listen_segment_manager (app_worker_t *,
237 segment_manager_t *app_worker_get_connect_segment_manager (app_worker_t *);
238 int app_worker_alloc_connects_segment_manager (app_worker_t * app);
239 int app_worker_add_segment_notify (u32 app_or_wrk, ssvm_private_t * fs);
240 u32 app_worker_n_listeners (app_worker_t * app);
241 stream_session_t *app_worker_first_listener (app_worker_t * app,
244 u8 app_worker_application_is_builtin (app_worker_t * app_wrk);
245 int app_worker_send_event (app_worker_t * app, stream_session_t * s, u8 evt);
246 int app_worker_lock_and_send_event (app_worker_t * app, stream_session_t * s,
248 clib_error_t *vnet_app_worker_add_del (vnet_app_worker_add_del_args_t * a);
250 int application_start_listen (application_t * app,
251 session_endpoint_cfg_t * tep,
252 session_handle_t * handle);
253 int application_stop_listen (u32 app_index, u32 app_or_wrk,
254 session_handle_t handle);
256 application_t *application_alloc (void);
257 int application_alloc_and_init (app_init_args_t * args);
258 void application_free (application_t * app);
259 void application_detach_process (application_t * app, u32 api_client_index);
260 application_t *application_get (u32 index);
261 application_t *application_get_if_valid (u32 index);
262 application_t *application_lookup (u32 api_client_index);
263 application_t *application_lookup_name (const u8 * name);
264 u32 application_index (application_t * app);
265 app_worker_t *application_get_worker (application_t * app, u32 wrk_index);
266 app_worker_t *application_get_default_worker (application_t * app);
267 app_worker_t *application_listener_select_worker (stream_session_t * ls,
270 int application_api_queue_is_full (application_t * app);
272 int application_is_proxy (application_t * app);
273 int application_is_builtin (application_t * app);
274 int application_is_builtin_proxy (application_t * app);
275 u32 application_session_table (application_t * app, u8 fib_proto);
276 u32 application_local_session_table (application_t * app);
277 const u8 *application_name_from_index (u32 app_or_wrk);
278 u8 application_has_local_scope (application_t * app);
279 u8 application_has_global_scope (application_t * app);
280 u8 application_use_mq_for_ctrl (application_t * app);
281 void application_setup_proxy (application_t * app);
282 void application_remove_proxy (application_t * app);
284 segment_manager_properties_t *application_get_segment_manager_properties (u32
287 segment_manager_properties_t
288 * application_segment_manager_properties (application_t * app);
294 local_session_t *application_local_session_alloc (app_worker_t * app);
295 void application_local_session_free (app_worker_t * app,
296 local_session_t * ls);
297 local_session_t *application_get_local_session (app_worker_t * app,
299 local_session_t *application_get_local_session_from_handle (session_handle_t
302 * application_get_local_listen_session_from_handle (session_handle_t lh);
303 int application_start_local_listen (application_t * server,
304 session_endpoint_cfg_t * sep,
305 session_handle_t * handle);
306 int application_stop_local_listen (u32 app_index, u32 app_or_wrk,
307 session_handle_t lh);
308 int application_local_session_connect (app_worker_t * client,
309 app_worker_t * server,
310 local_session_t * ls, u32 opaque);
311 int application_local_session_connect_notify (local_session_t * ls);
312 int application_local_session_disconnect (u32 app_or_wrk,
313 local_session_t * ls);
314 int application_local_session_disconnect_w_index (u32 app_or_wrk,
316 void app_worker_local_sessions_free (app_worker_t * app);
319 local_session_id (local_session_t * ls)
321 ASSERT (ls->session_index < (2 << 16));
322 u32 app_or_wrk_index;
324 if (ls->session_state == SESSION_STATE_LISTENING)
326 ASSERT (ls->app_index < (2 << 16));
327 app_or_wrk_index = ls->app_index;
331 ASSERT (ls->app_wrk_index < (2 << 16));
332 app_or_wrk_index = ls->app_wrk_index;
335 return ((u32) app_or_wrk_index << 16 | (u32) ls->session_index);
339 local_session_parse_id (u32 ls_id, u32 * app_or_wrk, u32 * session_index)
341 *app_or_wrk = ls_id >> 16;
342 *session_index = ls_id & 0xFF;
346 local_session_parse_handle (session_handle_t handle, u32 * app_or_wrk_index,
350 ASSERT ((handle >> 32) == SESSION_LOCAL_HANDLE_PREFIX);
351 bottom = (handle & 0xFFFFFFFF);
352 local_session_parse_id (bottom, app_or_wrk_index, session_index);
355 always_inline session_handle_t
356 application_local_session_handle (local_session_t * ls)
358 return ((u64) SESSION_LOCAL_HANDLE_PREFIX << 32)
359 | (u64) local_session_id (ls);
362 always_inline local_session_t *
363 application_get_local_listen_session (application_t * app, u32 session_index)
365 return pool_elt_at_index (app->local_listen_sessions, session_index);
368 always_inline local_session_t *
369 application_get_local_listener_w_handle (session_handle_t handle)
371 u32 server_index, session_index;
373 local_session_parse_handle (handle, &server_index, &session_index);
374 app = application_get (server_index);
375 return application_get_local_listen_session (app, session_index);
379 application_local_session_listener_has_transport (local_session_t * ls)
381 transport_proto_t tp;
382 tp = session_type_transport_proto (ls->listener_session_type);
383 return (tp != TRANSPORT_PROTO_NONE);
386 void mq_send_local_session_disconnected_cb (u32 app_or_wrk,
387 local_session_t * ls);
389 uword unformat_application_proto (unformat_input_t * input, va_list * args);
391 #endif /* SRC_VNET_SESSION_APPLICATION_H_ */
394 * fd.io coding-style-patch-verification: ON
397 * eval: (c-set-style "gnu")