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/vnet.h>
20 #include <vnet/session/session.h>
21 #include <vnet/session/segment_manager.h>
22 #include <vnet/session/application_namespace.h>
24 typedef struct _stream_session_cb_vft
26 /** Notify server of new segment */
27 int (*add_segment_callback) (u32 api_client_index,
28 const ssvm_private_t * ssvm_seg);
29 /** Notify server of new segment */
30 int (*del_segment_callback) (u32 api_client_index,
31 const ssvm_private_t * ssvm_seg);
33 /** Notify server of newly accepted session */
34 int (*session_accept_callback) (stream_session_t * new_session);
36 /** Connection request callback */
37 int (*session_connected_callback) (u32 app_index, u32 opaque,
38 stream_session_t * s, u8 code);
40 /** Notify app that session is closing */
41 void (*session_disconnect_callback) (stream_session_t * s);
43 /** Notify app that session was reset */
44 void (*session_reset_callback) (stream_session_t * s);
46 /** Direct RX callback for built-in application */
47 int (*builtin_app_rx_callback) (stream_session_t * session);
49 /** Direct TX callback for built-in application */
50 int (*builtin_app_tx_callback) (stream_session_t * session);
54 typedef struct _application
56 /** Index in server pool */
63 * Binary API interface to external app
66 /** Binary API connection index, ~0 if internal */
69 /** Namespace the application belongs to */
72 /** Application listens for events on this svm queue */
73 svm_queue_t *event_queue;
76 * Callbacks: shoulder-taps for the server/client
79 session_cb_vft_t cb_fns;
82 * ssvm (fifo) segment management
84 /** Segment manager used for outgoing connects issued by the app */
85 u32 connects_seg_manager;
87 /** Lookup tables for listeners. Value is segment manager index */
88 uword *listeners_table;
91 * First segment manager has in the the first segment the application's
92 * event fifo. Depending on what the app does, it may be either used for
93 * a listener or for connects.
95 u32 first_segment_manager;
96 u8 first_segment_manager_in_use;
98 /** Segment manager properties. Shared by all segment managers */
99 segment_manager_properties_t sm_properties;
101 u16 proxied_transports;
104 * Local "cut through" connections specific
107 /** Segment manager used for incoming "cut through" connects */
108 u32 local_segment_manager;
110 /** Pool of local listen sessions */
111 local_session_t *local_listen_sessions;
113 /** Pool of local sessions the app owns (as a server) */
114 local_session_t *local_sessions;
116 /** Hash table of the app's local connects */
117 uword *local_connects;
123 /** Certificate to be used for listen sessions */
126 /** PEM encoded key */
129 /** Preferred tls engine */
133 #define APP_INVALID_INDEX ((u32)~0)
134 #define APP_NS_INVALID_INDEX ((u32)~0)
135 #define APP_INVALID_SEGMENT_MANAGER_INDEX ((u32) ~0)
137 application_t *application_new ();
138 int application_init (application_t * app, u32 api_client_index,
139 u64 * options, session_cb_vft_t * cb_fns);
140 void application_del (application_t * app);
141 application_t *application_get (u32 index);
142 application_t *application_get_if_valid (u32 index);
143 application_t *application_lookup (u32 api_client_index);
144 u32 application_get_index (application_t * app);
146 int application_start_listen (application_t * app,
147 session_endpoint_t * tep,
148 session_handle_t * handle);
149 int application_start_local_listen (application_t * server,
150 session_endpoint_t * sep,
151 session_handle_t * handle);
152 int application_stop_listen (application_t * srv, session_handle_t handle);
153 int application_stop_local_listen (application_t * server,
154 session_handle_t listener_handle);
155 int application_open_session (application_t * app, session_endpoint_t * tep,
157 int application_api_queue_is_full (application_t * app);
159 segment_manager_t *application_get_listen_segment_manager (application_t *
163 segment_manager_t *application_get_connect_segment_manager (application_t *
165 int application_alloc_connects_segment_manager (application_t * app);
167 int application_is_proxy (application_t * app);
168 int application_is_builtin (application_t * app);
169 int application_is_builtin_proxy (application_t * app);
170 int application_add_segment_notify (u32 app_index, ssvm_private_t * fs);
171 u32 application_session_table (application_t * app, u8 fib_proto);
172 u32 application_local_session_table (application_t * app);
173 u8 *application_name_from_index (u32 app_index);
175 u8 application_has_local_scope (application_t * app);
176 u8 application_has_global_scope (application_t * app);
177 u32 application_n_listeners (application_t * app);
178 stream_session_t *application_first_listener (application_t * app,
181 void application_setup_proxy (application_t * app);
182 void application_remove_proxy (application_t * app);
184 segment_manager_properties_t *application_get_segment_manager_properties (u32
186 segment_manager_properties_t
187 * application_segment_manager_properties (application_t * app);
189 local_session_t *application_alloc_local_session (application_t * app);
190 void application_free_local_session (application_t * app,
191 local_session_t * ls);
192 local_session_t *application_get_local_session (application_t * app,
194 local_session_t *application_get_local_session_from_handle (session_handle_t
196 int application_local_session_connect (u32 table_index,
197 application_t * client,
198 application_t * server,
199 local_session_t * ll, u32 opaque);
200 int application_local_session_connect_notify (local_session_t * ls);
201 int application_local_session_disconnect (u32 app_index,
202 local_session_t * ls);
203 void application_local_sessions_del (application_t * app);
206 local_session_id (local_session_t * ll)
208 ASSERT (ll->app_index < (2 << 16) && ll->session_index < (2 << 16));
209 return ((u32) ll->app_index << 16 | (u32) ll->session_index);
213 local_session_parse_id (u32 ls_id, u32 * app_index, u32 * session_index)
215 *app_index = ls_id >> 16;
216 *session_index = ls_id & 0xFFF;
220 local_session_parse_handle (session_handle_t handle, u32 * server_index,
224 ASSERT ((handle >> 32) == SESSION_LOCAL_HANDLE_PREFIX);
225 bottom = (handle & 0xFFFFFFFF);
226 local_session_parse_id (bottom, server_index, session_index);
229 always_inline session_handle_t
230 application_local_session_handle (local_session_t * ls)
232 return ((u64) SESSION_LOCAL_HANDLE_PREFIX << 32)
233 | (u64) local_session_id (ls);
236 always_inline local_session_t *
237 application_get_local_listen_session (application_t * app, u32 session_index)
239 return pool_elt_at_index (app->local_listen_sessions, session_index);
242 always_inline local_session_t *
243 application_get_local_listener_w_handle (session_handle_t handle)
245 u32 server_index, session_index;
247 local_session_parse_handle (handle, &server_index, &session_index);
248 app = application_get (server_index);
249 return application_get_local_listen_session (app, session_index);
253 application_local_session_listener_has_transport (local_session_t * ls)
255 transport_proto_t tp;
256 tp = session_type_transport_proto (ls->listener_session_type);
257 return (tp != TRANSPORT_PROTO_NONE);
260 void send_local_session_disconnect_callback (u32 app_index,
261 local_session_t * ls);
263 int application_connect (u32 client_index, u32 api_context,
264 session_endpoint_t * sep);
266 uword unformat_application_proto (unformat_input_t * input, va_list * args);
268 #endif /* SRC_VNET_SESSION_APPLICATION_H_ */
271 * fd.io coding-style-patch-verification: ON
274 * eval: (c-set-style "gnu")