FD.io VPP  v18.10-34-gcce845e
Vector Packet Processing
session.h
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1 /*
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 
23 #include <svm/queue.h>
24 
25 #define HALF_OPEN_LOOKUP_INVALID_VALUE ((u64)~0)
26 #define INVALID_INDEX ((u32)~0)
27 #define SESSION_PROXY_LISTENER_INDEX ((u8)~0 - 1)
28 #define SESSION_LOCAL_HANDLE_PREFIX 0x7FFFFFFF
29 
30 /* TODO decide how much since we have pre-data as well */
31 #define MAX_HDRS_LEN 100 /* Max number of bytes for headers */
32 
33 typedef enum
34 {
53 
54 static inline const char *
55 fifo_event_type_str (session_evt_type_t et)
56 {
57  switch (et)
58  {
59  case FIFO_EVENT_APP_RX:
60  return "FIFO_EVENT_APP_RX";
61  case FIFO_EVENT_APP_TX:
62  return "FIFO_EVENT_APP_TX";
64  return "FIFO_EVENT_DISCONNECT";
66  return "FIFO_EVENT_BUILTIN_RX";
67  case FIFO_EVENT_RPC:
68  return "FIFO_EVENT_RPC";
69  default:
70  return "UNKNOWN FIFO EVENT";
71  }
72 }
73 
74 typedef enum
75 {
80 
81 #define foreach_session_input_error \
82 _(NO_SESSION, "No session drops") \
83 _(NO_LISTENER, "No listener for dst port drops") \
84 _(ENQUEUED, "Packets pushed into rx fifo") \
85 _(NOT_READY, "Session not ready packets") \
86 _(FIFO_FULL, "Packets dropped for lack of rx fifo space") \
87 _(EVENT_FIFO_FULL, "Events not sent for lack of event fifo space") \
88 _(API_QUEUE_FULL, "Sessions not created for lack of API queue space") \
89 _(NEW_SEG_NO_SPACE, "Created segment, couldn't allocate a fifo pair") \
90 _(NO_SPACE, "Couldn't allocate a fifo pair") \
91 _(SEG_CREATE, "Couldn't create a new segment")
92 
93 typedef enum
94 {
95 #define _(sym,str) SESSION_ERROR_##sym,
97 #undef _
100 
101 typedef struct
102 {
103  void *fp;
104  void *arg;
106 
108 
109 /* *INDENT-OFF* */
110 typedef struct
111 {
112  u8 event_type;
113  u8 postponed;
114  union
115  {
116  svm_fifo_t *fifo;
117  session_handle_t session_handle;
118  session_rpc_args_t rpc_args;
119  struct
120  {
121  u8 data[0];
122  };
123  };
124 } __clib_packed session_event_t;
125 /* *INDENT-ON* */
126 
127 #define SESSION_MSG_NULL { }
128 
130 {
134 
135 /* *INDENT-OFF* */
136 typedef CLIB_PACKED (struct session_dgram_header_
137 {
140  ip46_address_t rmt_ip;
141  ip46_address_t lcl_ip;
142  u16 rmt_port;
143  u16 lcl_port;
144  u8 is_ip4;
145 }) session_dgram_hdr_t;
146 /* *INDENT-ON* */
147 
148 #define SESSION_CONN_ID_LEN 37
149 #define SESSION_CONN_HDR_LEN 45
150 
151 STATIC_ASSERT (sizeof (session_dgram_hdr_t) == (SESSION_CONN_ID_LEN + 8),
152  "session conn id wrong length");
153 
154 typedef struct session_tx_context_
155 {
156  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
171  CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
172  session_dgram_hdr_t hdr;
174 
175 /* Forward definition */
176 typedef struct _session_manager_main session_manager_main_t;
177 
178 typedef int
180  session_event_t * e0, stream_session_t * s0,
181  int *n_tx_pkts);
182 
186 
187 u8 session_node_lookup_fifo_event (svm_fifo_t * f, session_event_t * e);
188 
189 struct _session_manager_main
190 {
191  /** Per worker thread session pools */
192  stream_session_t **sessions;
193 
194  /** Per worker-thread session pool peekers rw locks */
195  clib_rwlock_t *peekers_rw_locks;
196 
197  /** Per-proto, per-worker enqueue epoch counters */
198  u64 *current_enqueue_epoch[TRANSPORT_N_PROTO];
199 
200  /** Per-proto, per-worker thread vector of sessions to enqueue */
201  u32 **session_to_enqueue[TRANSPORT_N_PROTO];
202 
203  /** per-worker tx buffer free lists */
204  u32 **tx_buffers;
205 
206  /** Per worker-thread vector of partially read events */
207  session_event_t **free_event_vector;
208 
209  /** per-worker active event vectors */
210  session_event_t **pending_event_vector;
211 
212  /** per-worker postponed disconnects */
213  session_event_t **pending_disconnects;
214 
215  /** per-worker session context */
217 
218  /** vpp fifo event queue */
219  svm_msg_q_t **vpp_event_queues;
220 
221  /** Event queues memfd segment initialized only if so configured */
222  ssvm_private_t evt_qs_segment;
223 
224  /** Unique segment name counter */
225  u32 unique_segment_name_counter;
226 
227  /** Per transport rx function that can either dequeue or peek */
229 
230  /** Per session type output nodes. Could optimize to group nodes by
231  * fib but lookup would then require session type parsing in session node.
232  * Trade memory for speed, for now */
233  u32 *session_type_to_next;
234 
235  /** Session manager is enabled */
236  u8 is_enabled;
237 
238  /** vpp fifo event queue configured length */
239  u32 configured_event_queue_length;
240 
241  /*
242  * Config parameters
243  */
244 
245  /** Session ssvm segment configs*/
246  uword session_baseva;
247  uword session_va_space_size;
248  u32 evt_qs_segment_size;
249  u8 evt_qs_use_memfd_seg;
250 
251  /** Session table size parameters */
252  u32 configured_v4_session_table_buckets;
253  u32 configured_v4_session_table_memory;
254  u32 configured_v4_halfopen_table_buckets;
255  u32 configured_v4_halfopen_table_memory;
256  u32 configured_v6_session_table_buckets;
257  u32 configured_v6_session_table_memory;
258  u32 configured_v6_halfopen_table_buckets;
259  u32 configured_v6_halfopen_table_memory;
260 
261  /** Transport table (preallocation) size parameters */
262  u32 local_endpoints_table_memory;
263  u32 local_endpoints_table_buckets;
264 
265  /** Preallocate session config parameter */
266  u32 preallocated_sessions;
267 
268 #if SESSION_DEBUG
269  /**
270  * last event poll time by thread
271  * Debug only. Will cause false cache-line sharing as-is
272  */
273  f64 *last_event_poll_by_thread;
274 #endif
275 
276 };
277 
281 
282 #define SESSION_Q_PROCESS_FLUSH_FRAMES 1
283 #define SESSION_Q_PROCESS_STOP 2
284 
285 /*
286  * Session manager function
287  */
290 {
291  return &session_manager_main;
292 }
293 
295 stream_session_is_valid (u32 si, u8 thread_index)
296 {
297  stream_session_t *s;
298  s = pool_elt_at_index (session_manager_main.sessions[thread_index], si);
299  if (s->thread_index != thread_index || s->session_index != si
300  /* || s->server_rx_fifo->master_session_index != si
301  || s->server_tx_fifo->master_session_index != si
302  || s->server_rx_fifo->master_thread_index != thread_index
303  || s->server_tx_fifo->master_thread_index != thread_index */ )
304  return 0;
305  return 1;
306 }
307 
308 stream_session_t *session_alloc (u32 thread_index);
310 void session_free (stream_session_t * s);
312 
314 session_get (u32 si, u32 thread_index)
315 {
316  ASSERT (stream_session_is_valid (si, thread_index));
317  return pool_elt_at_index (session_manager_main.sessions[thread_index], si);
318 }
319 
321 session_get_if_valid (u64 si, u32 thread_index)
322 {
323  if (thread_index >= vec_len (session_manager_main.sessions))
324  return 0;
325 
326  if (pool_is_free_index (session_manager_main.sessions[thread_index], si))
327  return 0;
328 
329  ASSERT (stream_session_is_valid (si, thread_index));
330  return pool_elt_at_index (session_manager_main.sessions[thread_index], si);
331 }
332 
333 always_inline session_handle_t
335 {
336  return ((u64) s->thread_index << 32) | (u64) s->session_index;
337 }
338 
340 session_index_from_handle (session_handle_t handle)
341 {
342  return handle & 0xFFFFFFFF;
343 }
344 
346 session_thread_from_handle (session_handle_t handle)
347 {
348  return handle >> 32;
349 }
350 
351 always_inline void
352 session_parse_handle (session_handle_t handle, u32 * index,
353  u32 * thread_index)
354 {
355  *index = session_index_from_handle (handle);
356  *thread_index = session_thread_from_handle (handle);
357 }
358 
360 session_get_from_handle (session_handle_t handle)
361 {
363  u32 session_index, thread_index;
364  session_parse_handle (handle, &session_index, &thread_index);
365  return pool_elt_at_index (smm->sessions[thread_index], session_index);
366 }
367 
369 session_get_from_handle_if_valid (session_handle_t handle)
370 {
371  u32 session_index, thread_index;
372  session_parse_handle (handle, &session_index, &thread_index);
373  return session_get_if_valid (session_index, thread_index);
374 }
375 
377 session_handle_is_local (session_handle_t handle)
378 {
379  if ((handle >> 32) == SESSION_LOCAL_HANDLE_PREFIX)
380  return 1;
381  return 0;
382 }
383 
386 {
387  return (st >> 1);
388 }
389 
392 {
393  return (st & 1);
394 }
395 
398 {
399  return (s->session_type >> 1);
400 }
401 
404 {
405  u8 is_ip4 = s->session_type & 1;
406  return (is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
407 }
408 
411 {
412  return (proto << 1 | is_ip4);
413 }
414 
417 {
419 }
420 
424 
425 /**
426  * Acquires a lock that blocks a session pool from expanding.
427  *
428  * This is typically used for safely peeking into other threads'
429  * pools in order to clone elements. Lock should be dropped as soon
430  * as possible by calling @ref session_pool_remove_peeker.
431  *
432  * NOTE: Avoid using pool_elt_at_index while the lock is held because
433  * it may lead to free elt bitmap expansion/contraction!
434  */
435 always_inline void
437 {
439  if (thread_index == vlib_get_thread_index ())
440  return;
441  clib_rwlock_reader_lock (&smm->peekers_rw_locks[thread_index]);
442 }
443 
444 always_inline void
446 {
448  if (thread_index == vlib_get_thread_index ())
449  return;
450  clib_rwlock_reader_unlock (&smm->peekers_rw_locks[thread_index]);
451 }
452 
453 /**
454  * Get session from handle and 'lock' pool resize if not in same thread
455  *
456  * Caller should drop the peek 'lock' as soon as possible.
457  */
460 {
462  u32 thread_index = session_thread_from_handle (handle);
463  if (thread_index == vlib_get_thread_index ())
464  {
465  return pool_elt_at_index (smm->sessions[thread_index],
466  session_index_from_handle (handle));
467  }
468  else
469  {
470  session_pool_add_peeker (thread_index);
471  /* Don't use pool_elt_at index. See @ref session_pool_add_peeker */
472  return smm->sessions[thread_index] + session_index_from_handle (handle);
473  }
474 }
475 
478 {
479  stream_session_t *s = session_get (tc->s_index, tc->thread_index);
480  return svm_fifo_max_enqueue (s->server_rx_fifo);
481 }
482 
485 {
486  stream_session_t *s = session_get (tc->s_index, tc->thread_index);
487  return s->server_rx_fifo->nitems;
488 }
489 
492 {
493  stream_session_t *s = session_get (tc->s_index, tc->thread_index);
494  return s->server_tx_fifo->nitems;
495 }
496 
499 {
500  return (s - session_manager_main.sessions[s->thread_index]);
501 }
502 
504 session_clone_safe (u32 session_index, u32 thread_index)
505 {
506  stream_session_t *old_s, *new_s;
507  u32 current_thread_index = vlib_get_thread_index ();
508 
509  /* If during the memcpy pool is reallocated AND the memory allocator
510  * decides to give the old chunk of memory to somebody in a hurry to
511  * scribble something on it, we have a problem. So add this thread as
512  * a session pool peeker.
513  */
514  session_pool_add_peeker (thread_index);
515  new_s = session_alloc (current_thread_index);
516  old_s = session_manager_main.sessions[thread_index] + session_index;
517  clib_memcpy (new_s, old_s, sizeof (*new_s));
518  session_pool_remove_peeker (thread_index);
519  new_s->thread_index = current_thread_index;
520  new_s->session_index = session_get_index (new_s);
521  return new_s;
522 }
523 
525 
527 
528 int
530  vlib_buffer_t * b, u32 offset,
531  u8 queue_event, u8 is_in_order);
533  session_dgram_hdr_t * hdr,
534  vlib_buffer_t * b, u8 proto,
535  u8 queue_event);
537  u32 offset, u32 max_bytes);
539 
542  u32 old_thread_index,
543  stream_session_t ** new_session);
546  u32 rx_pointer, u32 tx_pointer);
547 
552 int stream_session_accept (transport_connection_t * tc, u32 listener_index,
553  u8 notify);
554 int session_open (u32 app_index, session_endpoint_t * tep, u32 opaque);
561  session_evt_type_t evt_type);
562 int session_send_io_evt_to_thread_custom (void *data, u32 thread_index,
563  session_evt_type_t evt_type);
564 void session_send_rpc_evt_to_thread (u32 thread_index, void *fp,
565  void *rpc_args);
566 
568 
569 u8 *format_stream_session (u8 * s, va_list * args);
570 uword unformat_stream_session (unformat_input_t * input, va_list * args);
572  va_list * args);
573 
574 void session_register_transport (transport_proto_t transport_proto,
575  const transport_proto_vft_t * vft, u8 is_ip4,
576  u32 output_node);
577 
578 always_inline void
580 {
581  stream_session_t *s = session_get (tc->s_index, tc->thread_index);
582  if (svm_fifo_has_event (s->server_tx_fifo))
583  return;
585 }
586 
588 
591 {
592  return session_manager_main.vpp_event_queues[thread_index];
593 }
594 
595 int session_manager_flush_enqueue_events (u8 proto, u32 thread_index);
596 int session_manager_flush_all_enqueue_events (u8 transport_proto);
597 
600 {
601  ASSERT (s->session_state == SESSION_STATE_LISTENING);
602  return session_handle (s);
603 }
604 
606 listen_session_get_from_handle (session_handle_t handle)
607 {
608  return session_get_from_handle (handle);
609 }
610 
611 always_inline void
612 listen_session_parse_handle (session_handle_t handle, u32 * index,
613  u32 * thread_index)
614 {
615  session_parse_handle (handle, index, thread_index);
616 }
617 
620 {
621  stream_session_t *s;
622  s = session_alloc (thread_index);
623  s->session_type = type;
624  s->session_state = SESSION_STATE_LISTENING;
625  return s;
626 }
627 
630 {
631  return session_get (index, 0);
632 }
633 
634 always_inline void
636 {
637  session_free (s);
638 }
639 
641 
642 int
644  session_endpoint_t * sep);
645 
647 
650 {
651  return session_manager_main.is_enabled == 1;
652 }
653 
654 #define session_cli_return_if_not_enabled() \
655 do { \
656  if (!session_manager_main.is_enabled) \
657  return clib_error_return(0, "session layer is not enabled"); \
658 } while (0)
659 
660 void session_node_enable_disable (u8 is_en);
661 
662 #endif /* __included_session_h__ */
663 
664 /*
665  * fd.io coding-style-patch-verification: ON
666  *
667  * Local Variables:
668  * eval: (c-set-style "gnu")
669  * End:
670  */
int session_listen(stream_session_t *s, session_endpoint_extended_t *sep)
Ask transport to listen on session endpoint.
Definition: session.c:1007
static void clib_rwlock_reader_lock(clib_rwlock_t *p)
Definition: lock.h:139
void session_free_w_fifos(stream_session_t *s)
Definition: session.c:157
#define CLIB_CACHE_LINE_ALIGN_MARK(mark)
Definition: cache.h:60
session_evt_type_t
Definition: session.h:33
static u32 transport_rx_fifo_size(transport_connection_t *tc)
Definition: session.h:484
struct _transport_connection transport_connection_t
int session_dgram_connect_notify(transport_connection_t *tc, u32 old_thread_index, stream_session_t **new_session)
Move dgram session to the right thread.
Definition: session.c:698
vlib_buffer_t * b
Definition: session.h:160
uword unformat_transport_connection(unformat_input_t *input, va_list *args)
Definition: session_cli.c:171
unsigned long u64
Definition: types.h:89
struct session_tx_context_ session_tx_context_t
uword unformat_stream_session(unformat_input_t *input, va_list *args)
Definition: session_cli.c:140
int session_stop_listen(stream_session_t *s)
Ask transport to stop listening on local transport endpoint.
Definition: session.c:1037
struct _transport_proto_vft transport_proto_vft_t
ssvm_private_t * session_manager_get_evt_q_segment(void)
Definition: session.c:1236
int stream_session_accept(transport_connection_t *tc, u32 listener_index, u8 notify)
Accept a stream session.
Definition: session.c:855
int session_stream_connect_notify(transport_connection_t *tc, u8 is_fail)
Definition: session.c:594
int session_dequeue_notify(stream_session_t *s)
Definition: session.c:520
static void session_parse_handle(session_handle_t handle, u32 *index, u32 *thread_index)
Definition: session.h:352
static u32 svm_fifo_max_enqueue(svm_fifo_t *f)
Definition: svm_fifo.h:132
static void session_pool_remove_peeker(u32 thread_index)
Definition: session.h:445
#define SESSION_LOCAL_HANDLE_PREFIX
Definition: session.h:28
u64 session_handle_t
Definition: session.h:107
static u32 session_index_from_handle(session_handle_t handle)
Definition: session.h:340
static stream_session_t * session_get_from_handle(session_handle_t handle)
Definition: session.h:360
static u8 session_manager_is_enabled()
Definition: session.h:649
int listen_session_get_local_session_endpoint(stream_session_t *listener, session_endpoint_t *sep)
Definition: session.c:1309
vlib_node_registration_t session_queue_node
(constructor) VLIB_REGISTER_NODE (session_queue_node)
Definition: session_node.c:930
enum transport_service_type_ transport_service_type_t
unsigned char u8
Definition: types.h:56
static stream_session_t * listen_session_get_from_handle(session_handle_t handle)
Definition: session.h:606
session_fifo_rx_fn session_tx_fifo_peek_and_snd
enum fib_protocol_t_ fib_protocol_t
Protocol Type.
double f64
Definition: types.h:142
static session_fifo_rx_fn * session_tx_fns[TRANSPORT_TX_N_FNS]
Definition: session.c:1245
struct _svm_fifo svm_fifo_t
static svm_msg_q_t * session_manager_get_vpp_event_queue(u32 thread_index)
Definition: session.h:590
void session_send_rpc_evt_to_thread(u32 thread_index, void *fp, void *rpc_args)
Definition: session.c:110
int session_enqueue_dgram_connection(stream_session_t *s, session_dgram_hdr_t *hdr, vlib_buffer_t *b, u8 proto, u8 queue_event)
Definition: session.c:411
#define always_inline
Definition: clib.h:94
int session_open(u32 app_index, session_endpoint_t *tep, u32 opaque)
Ask transport to open connection to remote transport endpoint.
Definition: session.c:992
static stream_session_t * listen_session_get(u32 index)
Definition: session.h:629
stream_session_t * s
Definition: session.h:157
void stream_session_accept_notify(transport_connection_t *tc)
Definition: session.c:734
u32 stream_session_dequeue_drop(transport_connection_t *tc, u32 max_bytes)
Definition: session.c:483
unsigned int u32
Definition: types.h:88
struct _stream_session_t stream_session_t
enum transport_dequeue_type_ transport_tx_fn_type_t
u8 session_tx_is_dgram(stream_session_t *s)
Definition: session.c:1157
static transport_proto_t session_get_transport_proto(stream_session_t *s)
Definition: session.h:397
static void listen_session_del(stream_session_t *s)
Definition: session.h:635
static session_manager_main_t * vnet_get_session_manager_main()
Definition: session.h:289
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:464
#define SESSION_CONN_ID_LEN
Definition: session.h:148
struct _session_endpoint session_endpoint_t
static void clib_rwlock_reader_unlock(clib_rwlock_t *p)
Definition: lock.h:157
transport_proto_vft_t * transport_vft
Definition: session.h:158
long ctx[MAX_CONNS]
Definition: main.c:144
void session_register_transport(transport_proto_t transport_proto, const transport_proto_vft_t *vft, u8 is_ip4, u32 output_node)
Initialize session layer for given transport proto and ip version.
Definition: session.c:1260
static u8 session_handle_is_local(session_handle_t handle)
Definition: session.h:377
struct _unformat_input_t unformat_input_t
static u32 session_get_index(stream_session_t *s)
Definition: session.h:498
unsigned short u16
Definition: types.h:57
static session_handle_t session_handle(stream_session_t *s)
Definition: session.h:334
void stream_session_disconnect_transport(stream_session_t *s)
Notify transport the session can be disconnected.
Definition: session.c:1106
void stream_session_init_fifos_pointers(transport_connection_t *tc, u32 rx_pointer, u32 tx_pointer)
Init fifo tail and head pointers.
Definition: session.c:584
static stream_session_t * session_get_if_valid(u64 si, u32 thread_index)
Definition: session.h:321
struct _session_manager_main session_manager_main_t
Definition: session.h:176
static stream_session_t * session_get(u32 si, u32 thread_index)
Definition: session.h:314
static void session_pool_add_peeker(u32 thread_index)
Acquires a lock that blocks a session pool from expanding.
Definition: session.h:436
static u32 session_thread_from_handle(session_handle_t handle)
Definition: session.h:346
void session_node_enable_disable(u8 is_en)
Definition: session.c:1427
int session_manager_flush_enqueue_events(u8 proto, u32 thread_index)
Flushes queue of sessions that are to be notified of new data enqueued events.
Definition: session.c:540
session_fifo_rx_fn session_tx_fifo_dequeue_and_snd
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:211
static session_type_t session_type_from_proto_and_ip(transport_proto_t proto, u8 is_ip4)
Definition: session.h:410
vlib_main_t * vm
Definition: buffer.c:294
static transport_proto_t session_type_transport_proto(session_type_t st)
Definition: session.h:385
u8 * format_stream_session(u8 *s, va_list *args)
Format stream session as per the following format.
Definition: session_cli.c:57
void stream_session_disconnect(stream_session_t *s)
Initialize session disconnect.
Definition: session.c:1066
static stream_session_t * session_get_from_handle_safe(u64 handle)
Get session from handle and &#39;lock&#39; pool resize if not in same thread.
Definition: session.h:459
#define clib_memcpy(a, b, c)
Definition: string.h:75
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:271
STATIC_ASSERT(sizeof(session_dgram_hdr_t)==(SESSION_CONN_ID_LEN+8),"session conn id wrong length")
session_manager_main_t session_manager_main
Definition: session.c:27
session_mq_rings_e
Definition: session.h:74
static u8 session_has_transport(stream_session_t *s)
Definition: session.h:416
static u8 stream_session_is_valid(u32 si, u8 thread_index)
Definition: session.h:295
transport_tx_fn_type_t session_transport_tx_fn_type(stream_session_t *)
Definition: session.c:1149
clib_error_t * vnet_session_enable_disable(vlib_main_t *vm, u8 is_en)
Definition: session.c:1461
static stream_session_t * session_get_from_handle_if_valid(session_handle_t handle)
Definition: session.h:369
void stream_session_delete_notify(transport_connection_t *tc)
Notification from transport that connection is being deleted.
Definition: session.c:799
typedef CLIB_PACKED(struct session_dgram_header_{u32 data_length;u32 data_offset;ip46_address_t rmt_ip;ip46_address_t lcl_ip;u16 rmt_port;u16 lcl_port;u8 is_ip4;}) session_dgram_hdr_t
void stream_session_cleanup(stream_session_t *s)
Cleanup transport and session state.
Definition: session.c:1127
#define ASSERT(truth)
struct session_dgram_pre_hdr_ session_dgram_pre_hdr_t
void stream_session_reset_notify(transport_connection_t *tc)
Notify application that connection has been reset.
Definition: session.c:839
u8 session_type_t
int session_send_io_evt_to_thread(svm_fifo_t *f, session_evt_type_t evt_type)
Definition: session.c:87
transport_connection_t * session_get_transport(stream_session_t *s)
Definition: session.c:1289
static void transport_add_tx_event(transport_connection_t *tc)
Definition: session.h:579
int session_send_io_evt_to_thread_custom(void *data, u32 thread_index, session_evt_type_t evt_type)
Definition: session.c:93
int session_enqueue_stream_connection(transport_connection_t *tc, vlib_buffer_t *b, u32 offset, u8 queue_event, u8 is_in_order)
Definition: session.c:355
int session_manager_flush_all_enqueue_events(u8 transport_proto)
Definition: session.c:569
u32 session_tx_fifo_max_dequeue(transport_connection_t *tc)
Definition: session.c:466
session_dgram_hdr_t hdr
Definition: session.h:172
transport_service_type_t session_transport_service_type(stream_session_t *)
Definition: session.c:1141
void session_free(stream_session_t *s)
Definition: session.c:149
struct _vlib_node_registration vlib_node_registration_t
enum _transport_proto transport_proto_t
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
stream_session_t * session_alloc(u32 thread_index)
Definition: session.c:122
session_fifo_rx_fn session_tx_fifo_dequeue_internal
int( session_fifo_rx_fn)(vlib_main_t *vm, vlib_node_runtime_t *node, session_event_t *e0, stream_session_t *s0, int *n_tx_pkts)
Definition: session.h:179
static stream_session_t * session_clone_safe(u32 session_index, u32 thread_index)
Definition: session.h:504
static stream_session_t * listen_session_new(u8 thread_index, session_type_t type)
Definition: session.h:619
u64 uword
Definition: types.h:112
struct _segment_manager segment_manager_t
session_error_t
Definition: session.h:93
#define foreach_session_input_error
Definition: session.h:81
int session_alloc_fifos(segment_manager_t *sm, stream_session_t *s)
Definition: session.c:165
transport_connection_t * tc
Definition: session.h:159
vlib_node_registration_t session_queue_process_node
(constructor) VLIB_REGISTER_NODE (session_queue_process_node)
static int svm_fifo_has_event(svm_fifo_t *f)
Definition: svm_fifo.h:138
int stream_session_peek_bytes(transport_connection_t *tc, u8 *buffer, u32 offset, u32 max_bytes)
Definition: session.c:475
u8 session_node_lookup_fifo_event(svm_fifo_t *f, session_event_t *e)
static u32 transport_max_rx_enqueue(transport_connection_t *tc)
Definition: session.h:477
transport_connection_t * listen_session_get_transport(stream_session_t *s)
Definition: session.c:1302
static fib_protocol_t session_get_fib_proto(stream_session_t *s)
Definition: session.h:403
static u8 session_type_is_ip4(session_type_t st)
Definition: session.h:391
static u64 listen_session_get_handle(stream_session_t *s)
Definition: session.h:599
struct _session_endpoint_extended session_endpoint_extended_t
void stream_session_disconnect_notify(transport_connection_t *tc)
Notification from transport that connection is being closed.
Definition: session.c:756
static u32 transport_tx_fifo_size(transport_connection_t *tc)
Definition: session.h:491
static const char * fifo_event_type_str(session_evt_type_t et)
Definition: session.h:55
void session_flush_frames_main_thread(vlib_main_t *vm)
Definition: session.c:1329
static void listen_session_parse_handle(session_handle_t handle, u32 *index, u32 *thread_index)
Definition: session.h:612