blob: da9332a2a109cbc2b1f7fdcfad7b8b02dfa005c1 [file] [log] [blame]
Dave Barach68b0fb02017-02-28 15:15:56 -05001/*
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:
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
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.
14 */
15#ifndef __included_session_h__
16#define __included_session_h__
17
Florin Coras04e53442017-07-16 17:12:15 -070018#include <vnet/session/stream_session.h>
19#include <vnet/session/session_lookup.h>
20#include <vnet/session/transport_interface.h>
Florin Coras3e350af2017-03-30 02:54:28 -070021#include <vnet/session/session_debug.h>
Florin Coras6cf30ad2017-04-04 23:08:23 -070022#include <vnet/session/segment_manager.h>
Florin Corase86a8ed2018-01-05 03:20:25 -080023#include <svm/queue.h>
Dave Barach68b0fb02017-02-28 15:15:56 -050024
25#define HALF_OPEN_LOOKUP_INVALID_VALUE ((u64)~0)
26#define INVALID_INDEX ((u32)~0)
Florin Corasc3ddea82017-11-27 03:12:00 -080027#define SESSION_PROXY_LISTENER_INDEX ((u32)~0 - 1)
Dave Barach68b0fb02017-02-28 15:15:56 -050028
29/* TODO decide how much since we have pre-data as well */
30#define MAX_HDRS_LEN 100 /* Max number of bytes for headers */
31
32typedef enum
33{
Florin Corasa5464812017-04-19 13:00:05 -070034 FIFO_EVENT_APP_RX,
35 FIFO_EVENT_APP_TX,
Dave Barach68b0fb02017-02-28 15:15:56 -050036 FIFO_EVENT_TIMEOUT,
Florin Corasa5464812017-04-19 13:00:05 -070037 FIFO_EVENT_DISCONNECT,
Dave Barache5f1d272017-05-10 13:34:04 -040038 FIFO_EVENT_BUILTIN_RX,
39 FIFO_EVENT_RPC,
Dave Barach68b0fb02017-02-28 15:15:56 -050040} fifo_event_type_t;
41
Dave Wallace33e002b2017-09-06 01:20:02 -040042static inline const char *
43fifo_event_type_str (fifo_event_type_t et)
44{
45 switch (et)
46 {
47 case FIFO_EVENT_APP_RX:
48 return "FIFO_EVENT_APP_RX";
49 case FIFO_EVENT_APP_TX:
50 return "FIFO_EVENT_APP_TX";
51 case FIFO_EVENT_TIMEOUT:
52 return "FIFO_EVENT_TIMEOUT";
53 case FIFO_EVENT_DISCONNECT:
54 return "FIFO_EVENT_DISCONNECT";
55 case FIFO_EVENT_BUILTIN_RX:
56 return "FIFO_EVENT_BUILTIN_RX";
57 case FIFO_EVENT_RPC:
58 return "FIFO_EVENT_RPC";
59 default:
60 return "UNKNOWN FIFO EVENT";
61 }
62}
63
Florin Coras3e350af2017-03-30 02:54:28 -070064#define foreach_session_input_error \
Dave Barach68b0fb02017-02-28 15:15:56 -050065_(NO_SESSION, "No session drops") \
66_(NO_LISTENER, "No listener for dst port drops") \
67_(ENQUEUED, "Packets pushed into rx fifo") \
68_(NOT_READY, "Session not ready packets") \
69_(FIFO_FULL, "Packets dropped for lack of rx fifo space") \
70_(EVENT_FIFO_FULL, "Events not sent for lack of event fifo space") \
71_(API_QUEUE_FULL, "Sessions not created for lack of API queue space") \
72_(NEW_SEG_NO_SPACE, "Created segment, couldn't allocate a fifo pair") \
73_(NO_SPACE, "Couldn't allocate a fifo pair")
74
75typedef enum
76{
77#define _(sym,str) SESSION_ERROR_##sym,
78 foreach_session_input_error
79#undef _
80 SESSION_N_ERROR,
81} session_error_t;
82
Dave Barache5f1d272017-05-10 13:34:04 -040083typedef struct
84{
85 void *fp;
86 void *arg;
87} rpc_args_t;
88
Florin Coras6792ec02017-03-13 03:49:51 -070089/* *INDENT-OFF* */
90typedef CLIB_PACKED (struct {
Florin Corasa5464812017-04-19 13:00:05 -070091 union
92 {
93 svm_fifo_t * fifo;
94 u64 session_handle;
Dave Barache5f1d272017-05-10 13:34:04 -040095 rpc_args_t rpc_args;
Florin Corasa5464812017-04-19 13:00:05 -070096 };
Florin Coras6792ec02017-03-13 03:49:51 -070097 u8 event_type;
Florin Coras3cbc04b2017-10-02 00:18:51 -070098 u8 postponed;
Florin Coras6792ec02017-03-13 03:49:51 -070099}) session_fifo_event_t;
100/* *INDENT-ON* */
Dave Barach68b0fb02017-02-28 15:15:56 -0500101
Dave Barach68b0fb02017-02-28 15:15:56 -0500102/* Forward definition */
103typedef struct _session_manager_main session_manager_main_t;
104
105typedef int
106 (session_fifo_rx_fn) (vlib_main_t * vm, vlib_node_runtime_t * node,
107 session_manager_main_t * smm,
108 session_fifo_event_t * e0, stream_session_t * s0,
109 u32 thread_index, int *n_tx_pkts);
110
Florin Corasd79b41e2017-03-04 05:37:52 -0800111extern session_fifo_rx_fn session_tx_fifo_peek_and_snd;
112extern session_fifo_rx_fn session_tx_fifo_dequeue_and_snd;
Dave Barach68b0fb02017-02-28 15:15:56 -0500113
Florin Coras6534b7a2017-07-18 05:38:03 -0400114u8 session_node_lookup_fifo_event (svm_fifo_t * f, session_fifo_event_t * e);
115
Dave Barach68b0fb02017-02-28 15:15:56 -0500116struct _session_manager_main
117{
Dave Barach68b0fb02017-02-28 15:15:56 -0500118 /** Per worker thread session pools */
119 stream_session_t **sessions;
120
Florin Coras3cbc04b2017-10-02 00:18:51 -0700121 /** Per worker-thread count of threads peeking into the session pool */
122 u32 *session_peekers;
123
124 /** Per worker-thread rw peekers locks */
125 clib_spinlock_t *peekers_readers_locks;
126 clib_spinlock_t *peekers_write_locks;
127
Dave Barach68b0fb02017-02-28 15:15:56 -0500128 /** Pool of listen sessions. Same type as stream sessions to ease lookups */
Florin Coras561af9b2017-12-09 10:19:43 -0800129 stream_session_t **listen_sessions;
Dave Barach68b0fb02017-02-28 15:15:56 -0500130
Florin Coras3cbc04b2017-10-02 00:18:51 -0700131 /** Per-proto, per-worker enqueue epoch counters */
Florin Coras93e65802017-11-29 00:07:11 -0500132 u32 *current_enqueue_epoch[TRANSPORT_N_PROTO];
Dave Barach68b0fb02017-02-28 15:15:56 -0500133
Florin Coras3cbc04b2017-10-02 00:18:51 -0700134 /** Per-proto, per-worker thread vector of sessions to enqueue */
135 u32 **session_to_enqueue[TRANSPORT_N_PROTO];
Dave Barach68b0fb02017-02-28 15:15:56 -0500136
137 /** per-worker tx buffer free lists */
138 u32 **tx_buffers;
139
140 /** Per worker-thread vector of partially read events */
Dave Barachacd2a6a2017-05-16 17:41:34 -0400141 session_fifo_event_t **free_event_vector;
Dave Barach68b0fb02017-02-28 15:15:56 -0500142
143 /** per-worker active event vectors */
Dave Barachacd2a6a2017-05-16 17:41:34 -0400144 session_fifo_event_t **pending_event_vector;
Dave Barach68b0fb02017-02-28 15:15:56 -0500145
Florin Coras3cbc04b2017-10-02 00:18:51 -0700146 /** per-worker postponed disconnects */
147 session_fifo_event_t **pending_disconnects;
148
Dave Barach68b0fb02017-02-28 15:15:56 -0500149 /** vpp fifo event queue */
Florin Corase86a8ed2018-01-05 03:20:25 -0800150 svm_queue_t **vpp_event_queues;
Dave Barach68b0fb02017-02-28 15:15:56 -0500151
Florin Corasb384b542018-01-15 01:08:33 -0800152 /** Event queues memfd segment initialized only if so configured */
153 ssvm_private_t evt_qs_segment;
154
Florin Coras93e65802017-11-29 00:07:11 -0500155 /** Unique segment name counter */
156 u32 unique_segment_name_counter;
157
158 /** Per transport rx function that can either dequeue or peek */
Florin Coras561af9b2017-12-09 10:19:43 -0800159 session_fifo_rx_fn **session_tx_fns;
160
161 /** Per session type output nodes. Could optimize to group nodes by
162 * fib but lookup would then require session type parsing in session node.
163 * Trade memory for speed, for now */
164 u32 *session_type_to_next;
Florin Coras93e65802017-11-29 00:07:11 -0500165
166 /** Session manager is enabled */
167 u8 is_enabled;
168
Dave Barach10d8cc62017-05-30 09:30:07 -0400169 /** vpp fifo event queue configured length */
170 u32 configured_event_queue_length;
171
Florin Coras93e65802017-11-29 00:07:11 -0500172 /*
173 * Config parameters
174 */
175
Florin Corasb384b542018-01-15 01:08:33 -0800176 /** Session ssvm segment configs*/
177 uword session_baseva;
178 u32 segment_timeout;
179 u32 evt_qs_segment_size;
180 u8 evt_qs_use_memfd_seg;
181
182 /** Session table size parameters */
Florin Coras66b11312017-07-31 17:18:03 -0700183 u32 configured_v4_session_table_buckets;
184 u32 configured_v4_session_table_memory;
185 u32 configured_v4_halfopen_table_buckets;
186 u32 configured_v4_halfopen_table_memory;
187 u32 configured_v6_session_table_buckets;
188 u32 configured_v6_session_table_memory;
189 u32 configured_v6_halfopen_table_buckets;
190 u32 configured_v6_halfopen_table_memory;
191
Florin Coras93e65802017-11-29 00:07:11 -0500192 /** Transport table (preallocation) size parameters */
193 u32 local_endpoints_table_memory;
194 u32 local_endpoints_table_buckets;
Florin Corase04c2992017-03-01 08:17:34 -0800195
Dave Barach2c25a622017-06-26 11:35:07 -0400196 /** Preallocate session config parameter */
197 u32 preallocated_sessions;
198
Florin Coras3e350af2017-03-30 02:54:28 -0700199#if SESSION_DBG
200 /**
201 * last event poll time by thread
202 * Debug only. Will cause false cache-line sharing as-is
203 */
204 f64 *last_event_poll_by_thread;
205#endif
206
Dave Barach68b0fb02017-02-28 15:15:56 -0500207};
208
209extern session_manager_main_t session_manager_main;
Florin Corase04c2992017-03-01 08:17:34 -0800210extern vlib_node_registration_t session_queue_node;
Dave Barach68b0fb02017-02-28 15:15:56 -0500211
212/*
213 * Session manager function
214 */
215always_inline session_manager_main_t *
216vnet_get_session_manager_main ()
217{
218 return &session_manager_main;
219}
220
Dave Barach2c25a622017-06-26 11:35:07 -0400221always_inline u8
222stream_session_is_valid (u32 si, u8 thread_index)
223{
224 stream_session_t *s;
225 s = pool_elt_at_index (session_manager_main.sessions[thread_index], si);
226 if (s->thread_index != thread_index || s->session_index != si
Dave Barach52851e62017-08-07 09:35:25 -0400227 /* || s->server_rx_fifo->master_session_index != si
228 || s->server_tx_fifo->master_session_index != si
229 || s->server_rx_fifo->master_thread_index != thread_index
230 || s->server_tx_fifo->master_thread_index != thread_index */ )
Dave Barach2c25a622017-06-26 11:35:07 -0400231 return 0;
232 return 1;
233}
234
Florin Coras3cbc04b2017-10-02 00:18:51 -0700235stream_session_t *session_alloc (u32 thread_index);
236
Dave Barach68b0fb02017-02-28 15:15:56 -0500237always_inline stream_session_t *
Florin Corascea194d2017-10-02 00:18:51 -0700238session_get (u32 si, u32 thread_index)
Dave Barach68b0fb02017-02-28 15:15:56 -0500239{
Dave Barach2c25a622017-06-26 11:35:07 -0400240 ASSERT (stream_session_is_valid (si, thread_index));
Dave Barach68b0fb02017-02-28 15:15:56 -0500241 return pool_elt_at_index (session_manager_main.sessions[thread_index], si);
242}
243
244always_inline stream_session_t *
Florin Coras3cbc04b2017-10-02 00:18:51 -0700245session_get_if_valid (u64 si, u32 thread_index)
Dave Barach68b0fb02017-02-28 15:15:56 -0500246{
247 if (thread_index >= vec_len (session_manager_main.sessions))
248 return 0;
249
250 if (pool_is_free_index (session_manager_main.sessions[thread_index], si))
251 return 0;
252
Dave Barach2c25a622017-06-26 11:35:07 -0400253 ASSERT (stream_session_is_valid (si, thread_index));
Dave Barach68b0fb02017-02-28 15:15:56 -0500254 return pool_elt_at_index (session_manager_main.sessions[thread_index], si);
255}
256
Florin Coras6cf30ad2017-04-04 23:08:23 -0700257always_inline u64
Florin Coras3cbc04b2017-10-02 00:18:51 -0700258session_handle (stream_session_t * s)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700259{
260 return ((u64) s->thread_index << 32) | (u64) s->session_index;
261}
262
263always_inline u32
Florin Corascea194d2017-10-02 00:18:51 -0700264session_index_from_handle (u64 handle)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700265{
266 return handle & 0xFFFFFFFF;
267}
268
269always_inline u32
Florin Corascea194d2017-10-02 00:18:51 -0700270session_thread_from_handle (u64 handle)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700271{
272 return handle >> 32;
273}
274
275always_inline void
Florin Corascea194d2017-10-02 00:18:51 -0700276session_parse_handle (u64 handle, u32 * index, u32 * thread_index)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700277{
Florin Corascea194d2017-10-02 00:18:51 -0700278 *index = session_index_from_handle (handle);
279 *thread_index = session_thread_from_handle (handle);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700280}
281
282always_inline stream_session_t *
Florin Corascea194d2017-10-02 00:18:51 -0700283session_get_from_handle (u64 handle)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700284{
285 session_manager_main_t *smm = &session_manager_main;
Florin Corascea194d2017-10-02 00:18:51 -0700286 return
287 pool_elt_at_index (smm->sessions[session_thread_from_handle (handle)],
288 session_index_from_handle (handle));
Florin Coras6cf30ad2017-04-04 23:08:23 -0700289}
290
Florin Coras561af9b2017-12-09 10:19:43 -0800291always_inline transport_proto_t
292session_get_transport_proto (stream_session_t * s)
293{
294 return (s->session_type >> 1);
295}
296
297always_inline session_type_t
298session_type_from_proto_and_ip (transport_proto_t proto, u8 is_ip4)
299{
300 return (proto << 1 | is_ip4);
301}
302
Florin Coras3cbc04b2017-10-02 00:18:51 -0700303/**
304 * Acquires a lock that blocks a session pool from expanding.
305 *
306 * This is typically used for safely peeking into other threads'
307 * pools in order to clone elements. Lock should be dropped as soon
308 * as possible by calling @ref session_pool_remove_peeker.
309 *
310 * NOTE: Avoid using pool_elt_at_index while the lock is held because
311 * it may lead to free elt bitmap expansion/contraction!
312 */
313always_inline void
314session_pool_add_peeker (u32 thread_index)
315{
316 session_manager_main_t *smm = &session_manager_main;
317 if (thread_index == vlib_get_thread_index ())
318 return;
319 clib_spinlock_lock_if_init (&smm->peekers_readers_locks[thread_index]);
320 smm->session_peekers[thread_index] += 1;
321 if (smm->session_peekers[thread_index] == 1)
322 clib_spinlock_lock_if_init (&smm->peekers_write_locks[thread_index]);
323 clib_spinlock_unlock_if_init (&smm->peekers_readers_locks[thread_index]);
324}
325
326always_inline void
327session_pool_remove_peeker (u32 thread_index)
328{
329 session_manager_main_t *smm = &session_manager_main;
330 if (thread_index == vlib_get_thread_index ())
331 return;
332 ASSERT (session_manager_main.session_peekers[thread_index] > 0);
333 clib_spinlock_lock_if_init (&smm->peekers_readers_locks[thread_index]);
334 smm->session_peekers[thread_index] -= 1;
335 if (smm->session_peekers[thread_index] == 0)
336 clib_spinlock_unlock_if_init (&smm->peekers_write_locks[thread_index]);
337 clib_spinlock_unlock_if_init (&smm->peekers_readers_locks[thread_index]);
338}
339
340/**
341 * Get session from handle and 'lock' pool resize if not in same thread
342 *
343 * Caller should drop the peek 'lock' as soon as possible.
344 */
345always_inline stream_session_t *
346session_get_from_handle_safe (u64 handle)
347{
348 session_manager_main_t *smm = &session_manager_main;
349 u32 thread_index = session_thread_from_handle (handle);
350 if (thread_index == vlib_get_thread_index ())
351 {
352 return pool_elt_at_index (smm->sessions[thread_index],
353 session_index_from_handle (handle));
354 }
355 else
356 {
357 session_pool_add_peeker (thread_index);
358 /* Don't use pool_elt_at index. See @ref session_pool_add_peeker */
359 return smm->sessions[thread_index] + session_index_from_handle (handle);
360 }
361}
362
Dave Barach68b0fb02017-02-28 15:15:56 -0500363always_inline stream_session_t *
364stream_session_listener_get (u8 sst, u64 si)
365{
366 return pool_elt_at_index (session_manager_main.listen_sessions[sst], si);
367}
368
369always_inline u32
370stream_session_get_index (stream_session_t * s)
371{
372 if (s->session_state == SESSION_STATE_LISTENING)
373 return s - session_manager_main.listen_sessions[s->session_type];
374
375 return s - session_manager_main.sessions[s->thread_index];
376}
377
378always_inline u32
Florin Coras6792ec02017-03-13 03:49:51 -0700379stream_session_max_rx_enqueue (transport_connection_t * tc)
Dave Barach68b0fb02017-02-28 15:15:56 -0500380{
Florin Corascea194d2017-10-02 00:18:51 -0700381 stream_session_t *s = session_get (tc->s_index, tc->thread_index);
Dave Barach68b0fb02017-02-28 15:15:56 -0500382 return svm_fifo_max_enqueue (s->server_rx_fifo);
383}
384
Florin Corase04c2992017-03-01 08:17:34 -0800385always_inline u32
Florin Coras93992a92017-05-24 18:03:56 -0700386stream_session_rx_fifo_size (transport_connection_t * tc)
Florin Corase04c2992017-03-01 08:17:34 -0800387{
Florin Corascea194d2017-10-02 00:18:51 -0700388 stream_session_t *s = session_get (tc->s_index, tc->thread_index);
Florin Corase04c2992017-03-01 08:17:34 -0800389 return s->server_rx_fifo->nitems;
390}
391
Florin Coras3cbc04b2017-10-02 00:18:51 -0700392always_inline u32
393session_get_index (stream_session_t * s)
394{
395 return (s - session_manager_main.sessions[s->thread_index]);
396}
397
398always_inline stream_session_t *
399session_clone_safe (u32 session_index, u32 thread_index)
400{
401 stream_session_t *old_s, *new_s;
402 u32 current_thread_index = vlib_get_thread_index ();
403
404 /* If during the memcpy pool is reallocated AND the memory allocator
405 * decides to give the old chunk of memory to somebody in a hurry to
406 * scribble something on it, we have a problem. So add this thread as
407 * a session pool peeker.
408 */
409 session_pool_add_peeker (thread_index);
410 new_s = session_alloc (current_thread_index);
411 old_s = session_manager_main.sessions[thread_index] + session_index;
412 clib_memcpy (new_s, old_s, sizeof (*new_s));
413 session_pool_remove_peeker (thread_index);
414 new_s->thread_index = current_thread_index;
415 new_s->session_index = session_get_index (new_s);
416 return new_s;
417}
418
419transport_connection_t *session_get_transport (stream_session_t * s);
420
Florin Coras93992a92017-05-24 18:03:56 -0700421u32 stream_session_tx_fifo_max_dequeue (transport_connection_t * tc);
422
Florin Coras3cbc04b2017-10-02 00:18:51 -0700423stream_session_t *session_alloc (u32 thread_index);
Dave Barach68b0fb02017-02-28 15:15:56 -0500424int
Florin Coras3cbc04b2017-10-02 00:18:51 -0700425session_enqueue_stream_connection (transport_connection_t * tc,
426 vlib_buffer_t * b, u32 offset,
427 u8 queue_event, u8 is_in_order);
428int session_enqueue_dgram_connection (stream_session_t * s, vlib_buffer_t * b,
429 u8 proto, u8 queue_event);
430int stream_session_peek_bytes (transport_connection_t * tc, u8 * buffer,
431 u32 offset, u32 max_bytes);
Dave Barach68b0fb02017-02-28 15:15:56 -0500432u32 stream_session_dequeue_drop (transport_connection_t * tc, u32 max_bytes);
433
Florin Coras3cbc04b2017-10-02 00:18:51 -0700434int session_stream_connect_notify (transport_connection_t * tc, u8 is_fail);
435int session_dgram_connect_notify (transport_connection_t * tc,
436 u32 old_thread_index,
437 stream_session_t ** new_session);
Florin Corasc28764f2017-04-26 00:08:42 -0700438void stream_session_init_fifos_pointers (transport_connection_t * tc,
439 u32 rx_pointer, u32 tx_pointer);
Florin Corase69f4952017-03-07 10:06:24 -0800440
Dave Barach68b0fb02017-02-28 15:15:56 -0500441void stream_session_accept_notify (transport_connection_t * tc);
442void stream_session_disconnect_notify (transport_connection_t * tc);
443void stream_session_delete_notify (transport_connection_t * tc);
444void stream_session_reset_notify (transport_connection_t * tc);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700445int stream_session_accept (transport_connection_t * tc, u32 listener_index,
446 u8 notify);
447int session_open (u32 app_index, session_endpoint_t * tep, u32 opaque);
Florin Corascea194d2017-10-02 00:18:51 -0700448int stream_session_listen (stream_session_t * s, session_endpoint_t * tep);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700449int stream_session_stop_listen (stream_session_t * s);
Dave Barach68b0fb02017-02-28 15:15:56 -0500450void stream_session_disconnect (stream_session_t * s);
Florin Coras2f8d8fa2018-01-26 06:36:04 -0800451void stream_session_disconnect_transport (stream_session_t * s);
Dave Barach68b0fb02017-02-28 15:15:56 -0500452void stream_session_cleanup (stream_session_t * s);
Florin Corasa5464812017-04-19 13:00:05 -0700453void session_send_session_evt_to_thread (u64 session_handle,
454 fifo_event_type_t evt_type,
455 u32 thread_index);
Florin Corasb384b542018-01-15 01:08:33 -0800456ssvm_private_t *session_manager_get_evt_q_segment (void);
Florin Coras3eb50622017-07-13 01:24:57 -0400457
Dave Barach68b0fb02017-02-28 15:15:56 -0500458u8 *format_stream_session (u8 * s, va_list * args);
Florin Coras3eb50622017-07-13 01:24:57 -0400459uword unformat_stream_session (unformat_input_t * input, va_list * args);
460uword unformat_transport_connection (unformat_input_t * input,
461 va_list * args);
462
Florin Coras561af9b2017-12-09 10:19:43 -0800463void session_register_transport (transport_proto_t transport_proto,
464 const transport_proto_vft_t * vft, u8 is_ip4,
465 u32 output_node);
Dave Barach68b0fb02017-02-28 15:15:56 -0500466
Florin Corase04c2992017-03-01 08:17:34 -0800467clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en);
468
Florin Corase86a8ed2018-01-05 03:20:25 -0800469always_inline svm_queue_t *
Florin Coras6cf30ad2017-04-04 23:08:23 -0700470session_manager_get_vpp_event_queue (u32 thread_index)
471{
472 return session_manager_main.vpp_event_queues[thread_index];
473}
474
Florin Coras3cbc04b2017-10-02 00:18:51 -0700475int session_manager_flush_enqueue_events (u8 proto, u32 thread_index);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700476
477always_inline u64
478listen_session_get_handle (stream_session_t * s)
479{
480 ASSERT (s->session_state == SESSION_STATE_LISTENING);
481 return ((u64) s->session_type << 32) | s->session_index;
482}
483
484always_inline stream_session_t *
485listen_session_get_from_handle (u64 handle)
486{
487 session_manager_main_t *smm = &session_manager_main;
488 stream_session_t *s;
489 u32 type, index;
490 type = handle >> 32;
491 index = handle & 0xFFFFFFFF;
492
493 if (pool_is_free_index (smm->listen_sessions[type], index))
494 return 0;
495
496 s = pool_elt_at_index (smm->listen_sessions[type], index);
497 ASSERT (s->session_state == SESSION_STATE_LISTENING);
498 return s;
499}
500
501always_inline stream_session_t *
502listen_session_new (session_type_t type)
503{
504 stream_session_t *s;
Dave Barach1015a1e2017-05-08 19:15:03 -0400505 pool_get_aligned (session_manager_main.listen_sessions[type], s,
506 CLIB_CACHE_LINE_BYTES);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700507 memset (s, 0, sizeof (*s));
508
509 s->session_type = type;
510 s->session_state = SESSION_STATE_LISTENING;
511 s->session_index = s - session_manager_main.listen_sessions[type];
512
513 return s;
514}
515
516always_inline stream_session_t *
517listen_session_get (session_type_t type, u32 index)
518{
519 return pool_elt_at_index (session_manager_main.listen_sessions[type],
520 index);
521}
522
523always_inline void
524listen_session_del (stream_session_t * s)
525{
526 pool_put (session_manager_main.listen_sessions[s->session_type], s);
527}
528
Florin Coras3cbc04b2017-10-02 00:18:51 -0700529transport_connection_t *listen_session_get_transport (stream_session_t * s);
530
Florin Corascea194d2017-10-02 00:18:51 -0700531int
532listen_session_get_local_session_endpoint (stream_session_t * listener,
533 session_endpoint_t * sep);
534
Florin Coras04e53442017-07-16 17:12:15 -0700535always_inline stream_session_t *
Florin Coras561af9b2017-12-09 10:19:43 -0800536session_manager_get_listener (u8 session_type, u32 index)
Florin Coras04e53442017-07-16 17:12:15 -0700537{
Florin Coras561af9b2017-12-09 10:19:43 -0800538 return
539 pool_elt_at_index (session_manager_main.listen_sessions[session_type],
540 index);
Florin Coras04e53442017-07-16 17:12:15 -0700541}
542
Florin Coras561af9b2017-12-09 10:19:43 -0800543/**
544 * Set peek or dequeue function for given session type
545 *
546 * Reliable transport protocols will probably want to use a peek function
547 */
Florin Coras04e53442017-07-16 17:12:15 -0700548always_inline void
Florin Coras561af9b2017-12-09 10:19:43 -0800549session_manager_set_transport_rx_fn (session_type_t type, u8 is_peek)
Florin Coras04e53442017-07-16 17:12:15 -0700550{
Florin Coras04e53442017-07-16 17:12:15 -0700551 session_manager_main.session_tx_fns[type] = (is_peek) ?
552 session_tx_fifo_peek_and_snd : session_tx_fifo_dequeue_and_snd;
553}
554
Florin Coras6cf30ad2017-04-04 23:08:23 -0700555always_inline u8
556session_manager_is_enabled ()
557{
558 return session_manager_main.is_enabled == 1;
559}
560
Florin Corascea194d2017-10-02 00:18:51 -0700561#define session_cli_return_if_not_enabled() \
562do { \
563 if (!session_manager_main.is_enabled) \
564 return clib_error_return(0, "session layer is not enabled"); \
565} while (0)
566
Dave Barach2a863912017-11-28 10:11:42 -0500567void session_node_enable_disable (u8 is_en);
568
Dave Barach68b0fb02017-02-28 15:15:56 -0500569#endif /* __included_session_h__ */
570
571/*
572 * fd.io coding-style-patch-verification: ON
573 *
574 * Local Variables:
575 * eval: (c-set-style "gnu")
576 * End:
577 */