2 * Copyright (c) 2017-2019 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/application_interface.h>
20 #include <vnet/session/application_namespace.h>
21 #include <vnet/session/session_types.h>
22 #include <vnet/session/segment_manager.h>
27 #define APP_DBG(_fmt, _args...) clib_warning (_fmt, ##_args)
29 #define APP_DBG(_fmt, _args...)
32 typedef struct app_wrk_postponed_msg_
39 u8 data[SESSION_CTRL_MSG_TX_MAX_SIZE];
40 } app_wrk_postponed_msg_t;
42 typedef struct app_worker_
44 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
46 /** Worker index in global worker pool*/
49 /** Worker index in app's map pool */
52 /** Index of owning app */
55 /** Application listens for events on this svm queue */
56 svm_msg_q_t *event_queue;
59 * Segment manager used for outgoing connects issued by the app. By
60 * convention this is the first segment manager allocated by the worker
61 * so it's also the one that holds the first segment with the app's
62 * message queue in it.
64 u32 connects_seg_manager;
66 /** Lookup tables for listeners. Value is segment manager index */
67 uword *listeners_table;
69 /** API index for the worker. Needed for multi-process apps */
72 /** Set if mq is congested */
77 /** Pool of half-open session handles. Tracked in case worker detaches */
78 session_handle_t *half_open_table;
80 /* Per vpp worker fifos of events for app worker */
81 session_event_t **wrk_evts;
83 /* Vector of vpp workers mq congestion flags */
86 /** Protects detached seg managers */
87 clib_spinlock_t detached_seg_managers_lock;
89 /** Vector of detached listener segment managers */
90 u32 *detached_seg_managers;
93 typedef struct app_worker_map_
98 typedef struct app_listener_
100 clib_bitmap_t *workers; /**< workers accepting connections */
101 u32 accept_rotor; /**< last worker to accept a connection */
102 u32 al_index; /**< app listener index in app pool */
103 u32 app_index; /**< owning app index */
104 u32 local_index; /**< local listening session index */
105 u32 session_index; /**< global listening session index */
106 session_handle_t ls_handle; /**< session handle of the local or global
107 listening session that also identifies
109 u32 *cl_listeners; /**< vector that maps app workers to their
110 cl sessions with fifos */
113 typedef enum app_rx_mq_flags_
115 APP_RX_MQ_F_PENDING = 1 << 0,
116 APP_RX_MQ_F_POSTPONED = 1 << 1,
119 typedef struct app_rx_mq_elt_
121 struct app_rx_mq_elt_ *next;
122 struct app_rx_mq_elt_ *prev;
129 typedef struct application_
131 /** App index in app pool */
137 /** Callbacks: shoulder-taps for the server/client */
138 session_cb_vft_t cb_fns;
140 /** Segment manager properties. Shared by all segment managers */
141 segment_manager_props_t sm_properties;
143 /** Pool of mappings that keep track of workers associated to this app */
144 app_worker_map_t *worker_maps;
146 /** Name registered by builtin apps */
149 /** Namespace the application belongs to */
152 u16 proxied_transports;
154 /** Preferred tls engine */
157 /** quic initialization vector */
161 /** Segment where rx mqs were allocated */
162 fifo_segment_t rx_mqs_segment;
165 * Fixed vector of rx mqs that can be a part of pending_rx_mqs
166 * linked list maintained by the app sublayer for each worker
168 app_rx_mq_elt_t *rx_mqs;
171 typedef struct app_rx_mq_handle_
182 } __attribute__ ((aligned (sizeof (u64)))) app_rx_mq_handle_t;
185 * App sublayer per vpp worker state
187 typedef struct asl_wrk_
189 /** Linked list of mqs with pending messages */
190 app_rx_mq_elt_t *pending_rx_mqs;
193 typedef struct app_main_
196 * Pool from which we allocate all applications
198 application_t *app_pool;
200 /** Pool of app listeners */
201 app_listener_t *listeners;
204 * Hash table of apps by api client index
206 uword *app_by_api_client_index;
209 * Hash table of builtin apps by name
214 * Pool from which we allocate certificates (key, cert)
216 app_cert_key_pair_t *cert_key_pair_store;
219 * Last registered crypto engine type
221 crypto_engine_type_t last_crypto_engine;
224 * App sublayer per-worker state
229 typedef struct app_init_args_
231 #define _(_type, _name) _type _name;
232 foreach_app_init_args
236 typedef struct _vnet_app_worker_add_del_args
238 u32 app_index; /**< App for which a new worker is requested */
239 u32 wrk_map_index; /**< Index to delete or return value if add */
240 u32 api_client_index; /**< Binary API client index */
241 ssvm_private_t *segment; /**< First segment in segment manager */
242 u64 segment_handle; /**< Handle for the segment */
243 svm_msg_q_t *evt_q; /**< Worker message queue */
244 u8 is_add; /**< Flag set if addition */
245 } vnet_app_worker_add_del_args_t;
247 #define APP_INVALID_INDEX ((u32)~0)
248 #define APP_NS_INVALID_INDEX ((u32)~0)
249 #define APP_INVALID_SEGMENT_MANAGER_INDEX ((u32) ~0)
251 app_listener_t *app_listener_get (u32 al_index);
252 int app_listener_alloc_and_init (application_t * app,
253 session_endpoint_cfg_t * sep,
254 app_listener_t ** listener);
255 void app_listener_cleanup (app_listener_t * app_listener);
256 session_handle_t app_listener_handle (app_listener_t * app_listener);
257 app_listener_t *app_listener_lookup (application_t * app,
258 session_endpoint_cfg_t * sep);
259 session_t *app_listener_select_wrk_cl_session (session_t *ls,
260 session_dgram_hdr_t *hdr);
263 * Get app listener handle for listening session
265 * For a given listening session, this can return either the session
266 * handle of the app listener associated to the listening session or,
267 * if no such app listener exists, the session's handle
269 * @param ls listening session
270 * @return app listener or listening session handle
272 session_handle_t app_listen_session_handle (session_t * ls);
274 * Get app listener for listener session handle
276 * Should only be called on handles that have an app listener, i.e.,
277 * were obtained at the end of a @ref vnet_listen call.
279 * @param handle handle of the app listener. This is the handle of
280 * either the global or local listener
281 * @return pointer to app listener or 0
283 app_listener_t *app_listener_get_w_handle (session_handle_t handle);
284 session_t *app_listener_get_session (app_listener_t * al);
285 session_t *app_listener_get_local_session (app_listener_t * al);
286 session_t *app_listener_get_wrk_cl_session (app_listener_t *al, u32 wrk_index);
288 application_t *application_get (u32 index);
289 application_t *application_get_if_valid (u32 index);
290 application_t *application_lookup (u32 api_client_index);
291 application_t *application_lookup_name (const u8 * name);
292 app_worker_t *application_get_worker (application_t * app, u32 wrk_index);
293 app_worker_t *application_get_default_worker (application_t * app);
294 app_worker_t *application_listener_select_worker (session_t * ls);
295 int application_change_listener_owner (session_t * s, app_worker_t * app_wrk);
296 int application_is_proxy (application_t * app);
297 int application_is_builtin (application_t * app);
298 int application_is_builtin_proxy (application_t * app);
299 u32 application_session_table (application_t * app, u8 fib_proto);
300 u32 application_local_session_table (application_t * app);
301 const u8 *application_name_from_index (u32 app_or_wrk);
302 u8 application_has_local_scope (application_t * app);
303 u8 application_has_global_scope (application_t * app);
304 void application_setup_proxy (application_t * app);
305 void application_remove_proxy (application_t * app);
306 void application_namespace_cleanup (app_namespace_t *app_ns);
307 int application_original_dst_is_enabled (application_t *app);
309 segment_manager_props_t *application_get_segment_manager_properties (u32
312 segment_manager_props_t
313 * application_segment_manager_properties (application_t * app);
315 svm_msg_q_t *application_rx_mq_get (application_t *app, u32 mq_index);
316 u8 application_use_private_rx_mqs (void);
317 fifo_segment_t *application_get_rx_mqs_segment (application_t *app);
318 void application_enable_rx_mqs_nodes (u8 is_en);
325 app_worker_mq_is_congested (app_worker_t *app_wrk)
327 return app_wrk->mq_congested > 0;
330 app_worker_t *app_worker_alloc (application_t * app);
331 int application_alloc_worker_and_init (application_t * app,
332 app_worker_t ** wrk);
333 app_worker_t *app_worker_get (u32 wrk_index);
334 app_worker_t *app_worker_get_if_valid (u32 wrk_index);
335 application_t *app_worker_get_app (u32 wrk_index);
336 int app_worker_own_session (app_worker_t * app_wrk, session_t * s);
337 void app_worker_free (app_worker_t * app_wrk);
338 int app_worker_connect_session (app_worker_t *app, session_endpoint_cfg_t *sep,
339 session_handle_t *rsh);
340 session_error_t app_worker_start_listen (app_worker_t *app_wrk,
341 app_listener_t *lstnr);
342 int app_worker_stop_listen (app_worker_t * app_wrk, app_listener_t * al);
343 int app_worker_init_accepted (session_t * s);
344 int app_worker_listened_notify (app_worker_t *app_wrk, session_handle_t alsh,
345 u32 opaque, session_error_t err);
346 int app_worker_unlisten_reply (app_worker_t *app_wrk, session_handle_t sh,
347 u32 opaque, session_error_t err);
348 int app_worker_accept_notify (app_worker_t * app_wrk, session_t * s);
349 int app_worker_init_connected (app_worker_t * app_wrk, session_t * s);
350 int app_worker_connect_notify (app_worker_t * app_wrk, session_t * s,
351 session_error_t err, u32 opaque);
352 int app_worker_add_half_open (app_worker_t *app_wrk, session_handle_t sh);
353 int app_worker_del_half_open (app_worker_t *app_wrk, session_t *s);
354 int app_worker_close_notify (app_worker_t * app_wrk, session_t * s);
355 int app_worker_transport_closed_notify (app_worker_t * app_wrk,
357 int app_worker_reset_notify (app_worker_t * app_wrk, session_t * s);
358 int app_worker_cleanup_notify (app_worker_t * app_wrk, session_t * s,
359 session_cleanup_ntf_t ntf);
360 int app_worker_cleanup_notify_custom (app_worker_t *app_wrk, session_t *s,
361 session_cleanup_ntf_t ntf,
362 void (*cleanup_cb) (session_t *s));
363 int app_worker_migrate_notify (app_worker_t * app_wrk, session_t * s,
364 session_handle_t new_sh);
365 int app_worker_rx_notify (app_worker_t *app_wrk, session_t *s);
366 int app_worker_session_fifo_tuning (app_worker_t * app_wrk, session_t * s,
368 session_ft_action_t act, u32 len);
369 void app_worker_add_event (app_worker_t *app_wrk, session_t *s,
370 session_evt_type_t evt_type);
371 void app_worker_add_event_custom (app_worker_t *app_wrk, u32 thread_index,
372 session_event_t *evt);
373 int app_wrk_flush_wrk_events (app_worker_t *app_wrk, u32 thread_index);
374 void app_worker_del_all_events (app_worker_t *app_wrk);
375 segment_manager_t *app_worker_get_listen_segment_manager (app_worker_t *,
377 segment_manager_t *app_worker_get_connect_segment_manager (app_worker_t *);
378 int app_worker_add_segment_notify (app_worker_t * app_wrk,
380 int app_worker_del_segment_notify (app_worker_t * app_wrk,
382 u32 app_worker_n_listeners (app_worker_t * app);
383 session_t *app_worker_first_listener (app_worker_t * app,
384 u8 fib_proto, u8 transport_proto);
385 void app_wrk_send_ctrl_evt_fd (app_worker_t *app_wrk, u8 evt_type, void *msg,
386 u32 msg_len, int fd);
387 void app_wrk_send_ctrl_evt (app_worker_t *app_wrk, u8 evt_type, void *msg,
389 u8 app_worker_mq_wrk_is_congested (app_worker_t *app_wrk, u32 thread_index);
390 void app_worker_set_mq_wrk_congested (app_worker_t *app_wrk, u32 thread_index);
391 void app_worker_unset_wrk_mq_congested (app_worker_t *app_wrk,
393 session_t *app_worker_proxy_listener (app_worker_t * app, u8 fib_proto,
395 void app_worker_del_detached_sm (app_worker_t * app_wrk, u32 sm_index);
396 u8 *format_app_worker (u8 * s, va_list * args);
397 u8 *format_app_worker_listener (u8 * s, va_list * args);
398 u8 *format_crypto_engine (u8 * s, va_list * args);
399 u8 *format_crypto_context (u8 * s, va_list * args);
400 void app_worker_format_connects (app_worker_t * app_wrk, int verbose);
401 session_error_t vnet_app_worker_add_del (vnet_app_worker_add_del_args_t *a);
403 uword unformat_application_proto (unformat_input_t * input, va_list * args);
405 app_cert_key_pair_t *app_cert_key_pair_get (u32 index);
406 app_cert_key_pair_t *app_cert_key_pair_get_if_valid (u32 index);
407 app_cert_key_pair_t *app_cert_key_pair_get_default ();
409 void sapi_socket_close_w_handle (u32 api_handle);
411 crypto_engine_type_t app_crypto_engine_type_add (void);
412 u8 app_crypto_engine_n_types (void);
415 app_worker_application_is_builtin (app_worker_t *app_wrk)
417 return app_wrk->app_is_builtin;
420 #endif /* SRC_VNET_SESSION_APPLICATION_H_ */
423 * fd.io coding-style-patch-verification: ON
426 * eval: (c-set-style "gnu")