FD.io VPP  v21.06-3-gbb25fbf28
Vector Packet Processing
session.c
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1 /*
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:
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 /**
16  * @file
17  * @brief Session and session manager
18  */
19 
20 #include <vnet/session/session.h>
22 #include <vnet/dpo/load_balance.h>
23 #include <vnet/fib/ip4_fib.h>
24 
26 
27 static inline int
29  session_evt_type_t evt_type)
30 {
32  session_event_t *evt;
33  svm_msg_q_msg_t msg;
34  svm_msg_q_t *mq;
35 
36  mq = wrk->vpp_event_queue;
37  if (PREDICT_FALSE (svm_msg_q_lock (mq)))
38  return -1;
41  {
42  svm_msg_q_unlock (mq);
43  return -2;
44  }
45  switch (evt_type)
46  {
49  evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
50  evt->rpc_args.fp = data;
51  evt->rpc_args.arg = args;
52  break;
53  case SESSION_IO_EVT_RX:
54  case SESSION_IO_EVT_TX:
58  evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
59  evt->session_index = *(u32 *) data;
60  break;
65  evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
66  evt->session_handle = session_handle ((session_t *) data);
67  break;
68  default:
69  clib_warning ("evt unhandled!");
70  svm_msg_q_unlock (mq);
71  return -1;
72  }
73  evt->event_type = evt_type;
74 
75  svm_msg_q_add_and_unlock (mq, &msg);
76 
79 
80  return 0;
81 }
82 
83 int
85 {
86  return session_send_evt_to_thread (&f->shr->master_session_index, 0,
87  f->master_thread_index, evt_type);
88 }
89 
90 int
92  session_evt_type_t evt_type)
93 {
94  return session_send_evt_to_thread (data, 0, thread_index, evt_type);
95 }
96 
97 int
99 {
100  /* only events supported are disconnect, shutdown and reset */
101  ASSERT (evt_type == SESSION_CTRL_EVT_CLOSE ||
102  evt_type == SESSION_CTRL_EVT_HALF_CLOSE ||
103  evt_type == SESSION_CTRL_EVT_RESET);
104  return session_send_evt_to_thread (s, 0, s->thread_index, evt_type);
105 }
106 
107 void
109  void *rpc_args)
110 {
113 }
114 
115 void
117 {
120  else
121  {
122  void (*fnp) (void *) = fp;
123  fnp (rpc_args);
124  }
125 }
126 
127 void
129 {
130  session_t *s = session_get (tc->s_index, tc->thread_index);
131 
133  ASSERT (s->session_state != SESSION_STATE_TRANSPORT_DELETED);
134 
135  if (!(s->flags & SESSION_F_CUSTOM_TX))
136  {
137  s->flags |= SESSION_F_CUSTOM_TX;
138  if (svm_fifo_set_event (s->tx_fifo)
140  {
143 
144  wrk = session_main_get_worker (tc->thread_index);
145  if (has_prio)
147  else
149  elt->evt.session_index = tc->s_index;
150  elt->evt.event_type = SESSION_IO_EVT_TX;
151  tc->flags &= ~TRANSPORT_CONNECTION_F_DESCHED;
152 
155  session_queue_node.index);
156  }
157  }
158 }
159 
160 void
162 {
163  session_worker_t *wrk = session_main_get_worker (tc->thread_index);
165 
166  ASSERT (tc->thread_index == vlib_get_thread_index ());
167 
169  elt->evt.session_index = tc->s_index;
170  elt->evt.event_type = SESSION_IO_EVT_TX;
171 
174 }
175 
176 static void
178 {
182 
183  /* If we are in the handler thread, or being called with the worker barrier
184  * held, just append a new event to pending disconnects vector. */
186  {
189  clib_memset (&elt->evt, 0, sizeof (session_event_t));
190  elt->evt.session_handle = session_handle (s);
191  elt->evt.event_type = evt;
192 
195  }
196  else
198 }
199 
200 session_t *
202 {
204  session_t *s;
205  u8 will_expand = 0;
208  /* If we have peekers, let them finish */
209  if (PREDICT_FALSE (will_expand && vlib_num_workers ()))
210  {
214  }
215  else
216  {
218  }
219  clib_memset (s, 0, sizeof (*s));
220  s->session_index = s - wrk->sessions;
223  return s;
224 }
225 
226 void
228 {
229  if (CLIB_DEBUG)
230  {
232  clib_memset (s, 0xFA, sizeof (*s));
234  return;
235  }
236  SESSION_EVT (SESSION_EVT_FREE, s);
238 }
239 
240 u8
242 {
243  session_t *s;
245 
247 
248  if (s->thread_index != thread_index || s->session_index != si)
249  return 0;
250 
251  if (s->session_state == SESSION_STATE_TRANSPORT_DELETED
252  || s->session_state <= SESSION_STATE_LISTENING)
253  return 1;
254 
255  if (s->session_state == SESSION_STATE_CONNECTING &&
256  (s->flags & SESSION_F_HALF_OPEN))
257  return 1;
258 
259  tc = session_get_transport (s);
260  if (s->connection_index != tc->c_index
261  || s->thread_index != tc->thread_index || tc->s_index != si)
262  return 0;
263 
264  return 1;
265 }
266 
267 static void
269 {
270  app_worker_t *app_wrk;
271 
272  app_wrk = app_worker_get_if_valid (s->app_wrk_index);
273  if (!app_wrk)
274  return;
275  app_worker_cleanup_notify (app_wrk, s, ntf);
276 }
277 
278 void
280 {
283  session_free (s);
284 }
285 
286 /**
287  * Cleans up session and lookup table.
288  *
289  * Transport connection must still be valid.
290  */
291 static void
293 {
294  int rv;
295 
296  /* Delete from the main lookup table. */
297  if ((rv = session_lookup_del_session (s)))
298  clib_warning ("session %u hash delete rv %d", s->session_index, rv);
299 
301 }
302 
303 void
305 {
306  session_t *ho = session_get_from_handle (ho_handle);
307 
308  /* App transports can migrate their half-opens */
309  if (ho->flags & SESSION_F_IS_MIGRATING)
310  {
311  /* Session still migrating, move to closed state to signal that the
312  * session should be removed. */
313  if (ho->connection_index == ~0)
314  {
315  ho->session_state = SESSION_STATE_CLOSED;
316  return;
317  }
318  /* Migrated transports are no longer half-opens */
320  ho->connection_index, ho->app_index /* overloaded */);
321  }
322  else
324  ho->connection_index);
325  session_free (ho);
326 }
327 
328 static void
330 {
331  app_worker_t *app_wrk;
332 
333  ASSERT (vlib_get_thread_index () <= 1);
334  app_wrk = app_worker_get (ho->app_wrk_index);
335  app_worker_del_half_open (app_wrk, ho);
336  session_free (ho);
337 }
338 
339 static void
341 {
344 }
345 
346 void
348 {
349  /* Notification from ctrl thread accepted without rpc */
350  if (!tc->thread_index)
351  {
352  session_half_open_free (ho_session_get (tc->s_index));
353  }
354  else
355  {
356  void *args = uword_to_pointer ((uword) tc->s_index, void *);
358  args);
359  }
360 }
361 
362 void
364 {
365  session_t *ho;
366 
367  ho = ho_session_get (tc->s_index);
368  ho->flags |= SESSION_F_IS_MIGRATING;
369  ho->connection_index = ~0;
370 }
371 
372 int
374 {
375  session_t *ho;
376 
377  ho = ho_session_get (tc->s_index);
378 
379  /* App probably detached so the half-open must be cleaned up */
380  if (ho->session_state == SESSION_STATE_CLOSED)
381  {
383  return -1;
384  }
385  ho->connection_index = tc->c_index;
386  /* Overload app index for half-open with new thread */
387  ho->app_index = tc->thread_index;
388  return 0;
389 }
390 
391 session_t *
393 {
394  session_t *s;
395  u32 thread_index = tc->thread_index;
396 
398  || transport_protocol_is_cl (tc->proto));
399 
401  s->session_type = session_type_from_proto_and_ip (tc->proto, tc->is_ip4);
402  s->session_state = SESSION_STATE_CLOSED;
403 
404  /* Attach transport to session and vice versa */
405  s->connection_index = tc->c_index;
406  tc->s_index = s->session_index;
407  return s;
408 }
409 
410 session_t *
412 {
413  session_t *s;
414 
415  s = ho_session_alloc ();
416  s->session_type = session_type_from_proto_and_ip (tc->proto, tc->is_ip4);
417  s->connection_index = tc->c_index;
418  tc->s_index = s->session_index;
419  return s;
420 }
421 
422 /**
423  * Discards bytes from buffer chain
424  *
425  * It discards n_bytes_to_drop starting at first buffer after chain_b
426  */
427 always_inline void
429  vlib_buffer_t ** chain_b,
430  u32 n_bytes_to_drop)
431 {
432  vlib_buffer_t *next = *chain_b;
433  u32 to_drop = n_bytes_to_drop;
434  ASSERT (b->flags & VLIB_BUFFER_NEXT_PRESENT);
435  while (to_drop && (next->flags & VLIB_BUFFER_NEXT_PRESENT))
436  {
437  next = vlib_get_buffer (vm, next->next_buffer);
438  if (next->current_length > to_drop)
439  {
440  vlib_buffer_advance (next, to_drop);
441  to_drop = 0;
442  }
443  else
444  {
445  to_drop -= next->current_length;
446  next->current_length = 0;
447  }
448  }
449  *chain_b = next;
450 
451  if (to_drop == 0)
452  b->total_length_not_including_first_buffer -= n_bytes_to_drop;
453 }
454 
455 /**
456  * Enqueue buffer chain tail
457  */
458 always_inline int
460  u32 offset, u8 is_in_order)
461 {
462  vlib_buffer_t *chain_b;
463  u32 chain_bi, len, diff;
465  u8 *data;
466  u32 written = 0;
467  int rv = 0;
468 
469  if (is_in_order && offset)
470  {
471  diff = offset - b->current_length;
473  return 0;
474  chain_b = b;
475  session_enqueue_discard_chain_bytes (vm, b, &chain_b, diff);
476  chain_bi = vlib_get_buffer_index (vm, chain_b);
477  }
478  else
479  chain_bi = b->next_buffer;
480 
481  do
482  {
483  chain_b = vlib_get_buffer (vm, chain_bi);
484  data = vlib_buffer_get_current (chain_b);
485  len = chain_b->current_length;
486  if (!len)
487  continue;
488  if (is_in_order)
489  {
491  if (rv == len)
492  {
493  written += rv;
494  }
495  else if (rv < len)
496  {
497  return (rv > 0) ? (written + rv) : written;
498  }
499  else if (rv > len)
500  {
501  written += rv;
502 
503  /* written more than what was left in chain */
505  return written;
506 
507  /* drop the bytes that have already been delivered */
509  }
510  }
511  else
512  {
514  if (rv)
515  {
516  clib_warning ("failed to enqueue multi-buffer seg");
517  return -1;
518  }
519  offset += len;
520  }
521  }
522  while ((chain_bi = (chain_b->flags & VLIB_BUFFER_NEXT_PRESENT)
523  ? chain_b->next_buffer : 0));
524 
525  if (is_in_order)
526  return written;
527 
528  return 0;
529 }
530 
531 void
534 {
535  if (s->flags & SESSION_F_CUSTOM_FIFO_TUNING)
536  {
537  app_worker_t *app_wrk = app_worker_get (s->app_wrk_index);
538  app_worker_session_fifo_tuning (app_wrk, s, f, act, len);
539  if (CLIB_ASSERT_ENABLE)
540  {
541  segment_manager_t *sm;
542  sm = segment_manager_get (f->segment_manager);
543  ASSERT (f->shr->size >= 4096);
544  ASSERT (f->shr->size <= sm->max_fifo_size);
545  }
546  }
547 }
548 
549 /*
550  * Enqueue data for delivery to session peer. Does not notify peer of enqueue
551  * event but on request can queue notification events for later delivery by
552  * calling stream_server_flush_enqueue_events().
553  *
554  * @param tc Transport connection which is to be enqueued data
555  * @param b Buffer to be enqueued
556  * @param offset Offset at which to start enqueueing if out-of-order
557  * @param queue_event Flag to indicate if peer is to be notified or if event
558  * is to be queued. The former is useful when more data is
559  * enqueued and only one event is to be generated.
560  * @param is_in_order Flag to indicate if data is in order
561  * @return Number of bytes enqueued or a negative value if enqueueing failed.
562  */
563 int
566  u8 queue_event, u8 is_in_order)
567 {
568  session_t *s;
569  int enqueued = 0, rv, in_order_off;
570 
571  s = session_get (tc->s_index, tc->thread_index);
572 
573  if (is_in_order)
574  {
575  enqueued = svm_fifo_enqueue (s->rx_fifo,
576  b->current_length,
578  if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT)
579  && enqueued >= 0))
580  {
581  in_order_off = enqueued > b->current_length ? enqueued : 0;
582  rv = session_enqueue_chain_tail (s, b, in_order_off, 1);
583  if (rv > 0)
584  enqueued += rv;
585  }
586  }
587  else
588  {
590  b->current_length,
592  if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) && !rv))
594  /* if something was enqueued, report even this as success for ooo
595  * segment handling */
596  return rv;
597  }
598 
599  if (queue_event)
600  {
601  /* Queue RX event on this fifo. Eventually these will need to be flushed
602  * by calling stream_server_flush_enqueue_events () */
604 
606  if (!(s->flags & SESSION_F_RX_EVT))
607  {
608  s->flags |= SESSION_F_RX_EVT;
609  vec_add1 (wrk->session_to_enqueue[tc->proto], s->session_index);
610  }
611 
613  }
614 
615  return enqueued;
616 }
617 
618 int
620  session_dgram_hdr_t * hdr,
621  vlib_buffer_t * b, u8 proto, u8 queue_event)
622 {
623  int rv;
624 
626  >= b->current_length + sizeof (*hdr));
627 
628  if (PREDICT_TRUE (!(b->flags & VLIB_BUFFER_NEXT_PRESENT)))
629  {
630  /* *INDENT-OFF* */
631  svm_fifo_seg_t segs[2] = {
632  { (u8 *) hdr, sizeof (*hdr) },
634  };
635  /* *INDENT-ON* */
636 
637  rv = svm_fifo_enqueue_segments (s->rx_fifo, segs, 2,
638  0 /* allow_partial */ );
639  }
640  else
641  {
643  svm_fifo_seg_t *segs = 0, *seg;
644  vlib_buffer_t *it = b;
645  u32 n_segs = 1;
646 
647  vec_add2 (segs, seg, 1);
648  seg->data = (u8 *) hdr;
649  seg->len = sizeof (*hdr);
650  while (it)
651  {
652  vec_add2 (segs, seg, 1);
653  seg->data = vlib_buffer_get_current (it);
654  seg->len = it->current_length;
655  n_segs++;
656  if (!(it->flags & VLIB_BUFFER_NEXT_PRESENT))
657  break;
658  it = vlib_get_buffer (vm, it->next_buffer);
659  }
660  rv = svm_fifo_enqueue_segments (s->rx_fifo, segs, n_segs,
661  0 /* allow partial */ );
662  vec_free (segs);
663  }
664 
665  if (queue_event && rv > 0)
666  {
667  /* Queue RX event on this fifo. Eventually these will need to be flushed
668  * by calling stream_server_flush_enqueue_events () */
670 
672  if (!(s->flags & SESSION_F_RX_EVT))
673  {
674  s->flags |= SESSION_F_RX_EVT;
676  }
677 
679  }
680  return rv > 0 ? rv : 0;
681 }
682 
683 int
685  u32 offset, u32 max_bytes)
686 {
687  session_t *s = session_get (tc->s_index, tc->thread_index);
688  return svm_fifo_peek (s->tx_fifo, offset, max_bytes, buffer);
689 }
690 
691 u32
693 {
694  session_t *s = session_get (tc->s_index, tc->thread_index);
695  u32 rv;
696 
697  rv = svm_fifo_dequeue_drop (s->tx_fifo, max_bytes);
699 
700  if (svm_fifo_needs_deq_ntf (s->tx_fifo, max_bytes))
702 
703  return rv;
704 }
705 
706 static inline int
708  svm_fifo_t * f, session_evt_type_t evt_type)
709 {
710  app_worker_t *app_wrk;
711  application_t *app;
712  int i;
713 
714  app = application_get (app_index);
715  if (!app)
716  return -1;
717 
718  for (i = 0; i < f->shr->n_subscribers; i++)
719  {
720  app_wrk = application_get_worker (app, f->shr->subscribers[i]);
721  if (!app_wrk)
722  continue;
723  if (app_worker_lock_and_send_event (app_wrk, s, evt_type))
724  return -1;
725  }
726 
727  return 0;
728 }
729 
730 /**
731  * Notify session peer that new data has been enqueued.
732  *
733  * @param s Stream session for which the event is to be generated.
734  * @param lock Flag to indicate if call should lock message queue.
735  *
736  * @return 0 on success or negative number if failed to send notification.
737  */
738 static inline int
740 {
741  app_worker_t *app_wrk;
742  u32 session_index;
743  u8 n_subscribers;
744 
745  session_index = s->session_index;
746  n_subscribers = svm_fifo_n_subscribers (s->rx_fifo);
747 
748  app_wrk = app_worker_get_if_valid (s->app_wrk_index);
749  if (PREDICT_FALSE (!app_wrk))
750  {
751  SESSION_DBG ("invalid s->app_index = %d", s->app_wrk_index);
752  return 0;
753  }
754 
755  SESSION_EVT (SESSION_EVT_ENQ, s, svm_fifo_max_dequeue_prod (s->rx_fifo));
756 
757  s->flags &= ~SESSION_F_RX_EVT;
758 
759  /* Application didn't confirm accept yet */
760  if (PREDICT_FALSE (s->session_state == SESSION_STATE_ACCEPTING))
761  return 0;
762 
765  return -1;
766 
767  if (PREDICT_FALSE (n_subscribers))
768  {
769  s = session_get (session_index, vlib_get_thread_index ());
770  return session_notify_subscribers (app_wrk->app_index, s,
772  }
773 
774  return 0;
775 }
776 
777 int
779 {
781 }
782 
783 static void
785 {
786  u32 session_index = pointer_to_uword (arg);
787  session_t *s;
788 
789  s = session_get_if_valid (session_index, vlib_get_thread_index ());
790  if (!s)
791  return;
792 
794 }
795 
796 /**
797  * Like session_enqueue_notify, but can be called from a thread that does not
798  * own the session.
799  */
800 void
802 {
804  u32 session_index = session_index_from_handle (sh);
805 
806  /*
807  * Pass session index (u32) as opposed to handle (u64) in case pointers
808  * are not 64-bit.
809  */
812  uword_to_pointer (session_index, void *));
813 }
814 
815 int
817 {
818  app_worker_t *app_wrk;
819 
821 
822  app_wrk = app_worker_get_if_valid (s->app_wrk_index);
823  if (PREDICT_FALSE (!app_wrk))
824  return -1;
825 
828  return -1;
829 
830  if (PREDICT_FALSE (s->tx_fifo->shr->n_subscribers))
831  return session_notify_subscribers (app_wrk->app_index, s,
833 
834  return 0;
835 }
836 
837 /**
838  * Flushes queue of sessions that are to be notified of new data
839  * enqueued events.
840  *
841  * @param thread_index Thread index for which the flush is to be performed.
842  * @return 0 on success or a positive number indicating the number of
843  * failures due to API queue being full.
844  */
845 int
847 {
849  session_t *s;
850  int i, errors = 0;
851  u32 *indices;
852 
854 
855  for (i = 0; i < vec_len (indices); i++)
856  {
857  s = session_get_if_valid (indices[i], thread_index);
858  if (PREDICT_FALSE (!s))
859  {
860  errors++;
861  continue;
862  }
863 
865  0 /* TODO/not needed */ );
866 
868  errors++;
869  }
870 
871  vec_reset_length (indices);
873 
874  return errors;
875 }
876 
877 int
879 {
881  int i, errors = 0;
882  for (i = 0; i < 1 + vtm->n_threads; i++)
884  return errors;
885 }
886 
887 int
889  session_error_t err)
890 {
891  u32 opaque = 0, new_ti, new_si;
892  app_worker_t *app_wrk;
893  session_t *s = 0, *ho;
894 
895  /*
896  * Cleanup half-open table
897  */
899 
900  ho = ho_session_get (tc->s_index);
901  opaque = ho->opaque;
902  app_wrk = app_worker_get_if_valid (ho->app_wrk_index);
903  if (!app_wrk)
904  return -1;
905 
906  if (err)
907  return app_worker_connect_notify (app_wrk, s, err, opaque);
908 
910  s->session_state = SESSION_STATE_CONNECTING;
911  s->app_wrk_index = app_wrk->wrk_index;
912  new_si = s->session_index;
913  new_ti = s->thread_index;
914 
915  if ((err = app_worker_init_connected (app_wrk, s)))
916  {
917  session_free (s);
918  app_worker_connect_notify (app_wrk, 0, err, opaque);
919  return -1;
920  }
921 
922  s = session_get (new_si, new_ti);
923  s->session_state = SESSION_STATE_READY;
925 
926  if (app_worker_connect_notify (app_wrk, s, SESSION_E_NONE, opaque))
927  {
929  /* Avoid notifying app about rejected session cleanup */
930  s = session_get (new_si, new_ti);
932  session_free (s);
933  return -1;
934  }
935 
936  return 0;
937 }
938 
939 static void
941 {
942  u32 session_index = pointer_to_uword (arg);
943  session_t *s;
944 
945  s = session_get_if_valid (session_index, vlib_get_thread_index ());
946  if (!s)
947  return;
948 
949  /* Notify app that it has data on the new session */
951 }
952 
953 typedef struct _session_switch_pool_args
954 {
955  u32 session_index;
957  u32 new_thread_index;
958  u32 new_session_index;
960 
961 /**
962  * Notify old thread of the session pool switch
963  */
964 static void
965 session_switch_pool (void *cb_args)
966 {
968  session_handle_t new_sh;
969  segment_manager_t *sm;
970  app_worker_t *app_wrk;
971  session_t *s;
972  void *rargs;
973 
974  ASSERT (args->thread_index == vlib_get_thread_index ());
975  s = session_get (args->session_index, args->thread_index);
976 
978  s->thread_index);
979 
980  new_sh = session_make_handle (args->new_session_index,
981  args->new_thread_index);
982 
983  app_wrk = app_worker_get_if_valid (s->app_wrk_index);
984  if (app_wrk)
985  {
986  /* Cleanup fifo segment slice state for fifos */
990 
991  /* Notify app, using old session, about the migration event */
992  app_worker_migrate_notify (app_wrk, s, new_sh);
993  }
994 
995  /* Trigger app read and fifo updates on the new thread */
996  rargs = uword_to_pointer (args->new_session_index, void *);
997  session_send_rpc_evt_to_thread (args->new_thread_index,
999 
1000  session_free (s);
1001  clib_mem_free (cb_args);
1002 }
1003 
1004 /**
1005  * Move dgram session to the right thread
1006  */
1007 int
1009  u32 old_thread_index, session_t ** new_session)
1010 {
1011  session_t *new_s;
1012  session_switch_pool_args_t *rpc_args;
1013  segment_manager_t *sm;
1014  app_worker_t *app_wrk;
1015 
1016  /*
1017  * Clone half-open session to the right thread.
1018  */
1019  new_s = session_clone_safe (tc->s_index, old_thread_index);
1020  new_s->connection_index = tc->c_index;
1021  new_s->session_state = SESSION_STATE_READY;
1022  new_s->flags |= SESSION_F_IS_MIGRATING;
1023 
1024  if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP))
1026 
1027  app_wrk = app_worker_get_if_valid (new_s->app_wrk_index);
1028  if (app_wrk)
1029  {
1030  /* New set of fifos attached to the same shared memory */
1032  segment_manager_attach_fifo (sm, &new_s->rx_fifo, new_s);
1033  segment_manager_attach_fifo (sm, &new_s->tx_fifo, new_s);
1034  }
1035 
1036  /*
1037  * Ask thread owning the old session to clean it up and make us the tx
1038  * fifo owner
1039  */
1040  rpc_args = clib_mem_alloc (sizeof (*rpc_args));
1041  rpc_args->new_session_index = new_s->session_index;
1042  rpc_args->new_thread_index = new_s->thread_index;
1043  rpc_args->session_index = tc->s_index;
1044  rpc_args->thread_index = old_thread_index;
1045  session_send_rpc_evt_to_thread (rpc_args->thread_index, session_switch_pool,
1046  rpc_args);
1047 
1048  tc->s_index = new_s->session_index;
1049  new_s->connection_index = tc->c_index;
1050  *new_session = new_s;
1051  return 0;
1052 }
1053 
1054 /**
1055  * Notification from transport that connection is being closed.
1056  *
1057  * A disconnect is sent to application but state is not removed. Once
1058  * disconnect is acknowledged by application, session disconnect is called.
1059  * Ultimately this leads to close being called on transport (passive close).
1060  */
1061 void
1063 {
1064  app_worker_t *app_wrk;
1065  session_t *s;
1066 
1067  s = session_get (tc->s_index, tc->thread_index);
1068  if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
1069  return;
1070  s->session_state = SESSION_STATE_TRANSPORT_CLOSING;
1071  app_wrk = app_worker_get (s->app_wrk_index);
1072  app_worker_close_notify (app_wrk, s);
1073 }
1074 
1075 /**
1076  * Notification from transport that connection is being deleted
1077  *
1078  * This removes the session if it is still valid. It should be called only on
1079  * previously fully established sessions. For instance failed connects should
1080  * call stream_session_connect_notify and indicate that the connect has
1081  * failed.
1082  */
1083 void
1085 {
1086  session_t *s;
1087 
1088  /* App might've been removed already */
1089  if (!(s = session_get_if_valid (tc->s_index, tc->thread_index)))
1090  return;
1091 
1092  switch (s->session_state)
1093  {
1094  case SESSION_STATE_CREATED:
1095  /* Session was created but accept notification was not yet sent to the
1096  * app. Cleanup everything. */
1099  session_free (s);
1100  break;
1101  case SESSION_STATE_ACCEPTING:
1102  case SESSION_STATE_TRANSPORT_CLOSING:
1103  case SESSION_STATE_CLOSING:
1104  case SESSION_STATE_TRANSPORT_CLOSED:
1105  /* If transport finishes or times out before we get a reply
1106  * from the app, mark transport as closed and wait for reply
1107  * before removing the session. Cleanup session table in advance
1108  * because transport will soon be closed and closed sessions
1109  * are assumed to have been removed from the lookup table */
1111  s->session_state = SESSION_STATE_TRANSPORT_DELETED;
1114  break;
1115  case SESSION_STATE_APP_CLOSED:
1116  /* Cleanup lookup table as transport needs to still be valid.
1117  * Program transport close to ensure that all session events
1118  * have been cleaned up. Once transport close is called, the
1119  * session is just removed because both transport and app have
1120  * confirmed the close*/
1122  s->session_state = SESSION_STATE_TRANSPORT_DELETED;
1126  break;
1127  case SESSION_STATE_TRANSPORT_DELETED:
1128  break;
1129  case SESSION_STATE_CLOSED:
1131  session_delete (s);
1132  break;
1133  default:
1134  clib_warning ("session state %u", s->session_state);
1136  session_delete (s);
1137  break;
1138  }
1139 }
1140 
1141 /**
1142  * Notification from transport that it is closed
1143  *
1144  * Should be called by transport, prior to calling delete notify, once it
1145  * knows that no more data will be exchanged. This could serve as an
1146  * early acknowledgment of an active close especially if transport delete
1147  * can be delayed a long time, e.g., tcp time-wait.
1148  */
1149 void
1151 {
1152  app_worker_t *app_wrk;
1153  session_t *s;
1154 
1155  if (!(s = session_get_if_valid (tc->s_index, tc->thread_index)))
1156  return;
1157 
1158  /* Transport thinks that app requested close but it actually didn't.
1159  * Can happen for tcp:
1160  * 1)if fin and rst are received in close succession.
1161  * 2)if app shutdown the connection. */
1162  if (s->session_state == SESSION_STATE_READY)
1163  {
1166  s->session_state = SESSION_STATE_TRANSPORT_CLOSED;
1167  }
1168  /* If app close has not been received or has not yet resulted in
1169  * a transport close, only mark the session transport as closed */
1170  else if (s->session_state <= SESSION_STATE_CLOSING)
1171  {
1172  s->session_state = SESSION_STATE_TRANSPORT_CLOSED;
1173  }
1174  /* If app also closed, switch to closed */
1175  else if (s->session_state == SESSION_STATE_APP_CLOSED)
1176  s->session_state = SESSION_STATE_CLOSED;
1177 
1178  app_wrk = app_worker_get_if_valid (s->app_wrk_index);
1179  if (app_wrk)
1181 }
1182 
1183 /**
1184  * Notify application that connection has been reset.
1185  */
1186 void
1188 {
1189  app_worker_t *app_wrk;
1190  session_t *s;
1191 
1192  s = session_get (tc->s_index, tc->thread_index);
1194  if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
1195  return;
1196  s->session_state = SESSION_STATE_TRANSPORT_CLOSING;
1197  app_wrk = app_worker_get (s->app_wrk_index);
1198  app_worker_reset_notify (app_wrk, s);
1199 }
1200 
1201 int
1203 {
1204  app_worker_t *app_wrk;
1205  session_t *s;
1206 
1207  s = session_get (tc->s_index, tc->thread_index);
1208  app_wrk = app_worker_get_if_valid (s->app_wrk_index);
1209  if (!app_wrk)
1210  return -1;
1211  if (s->session_state != SESSION_STATE_CREATED)
1212  return 0;
1213  s->session_state = SESSION_STATE_ACCEPTING;
1214  if (app_worker_accept_notify (app_wrk, s))
1215  {
1216  /* On transport delete, no notifications should be sent. Unless, the
1217  * accept is retried and successful. */
1218  s->session_state = SESSION_STATE_CREATED;
1219  return -1;
1220  }
1221  return 0;
1222 }
1223 
1224 /**
1225  * Accept a stream session. Optionally ping the server by callback.
1226  */
1227 int
1229  u32 thread_index, u8 notify)
1230 {
1231  session_t *s;
1232  int rv;
1233 
1235  s->listener_handle = ((u64) thread_index << 32) | (u64) listener_index;
1236  s->session_state = SESSION_STATE_CREATED;
1237 
1238  if ((rv = app_worker_init_accepted (s)))
1239  {
1240  session_free (s);
1241  return rv;
1242  }
1243 
1245 
1246  /* Shoulder-tap the server */
1247  if (notify)
1248  {
1249  app_worker_t *app_wrk = app_worker_get (s->app_wrk_index);
1250  if ((rv = app_worker_accept_notify (app_wrk, s)))
1251  {
1254  session_free (s);
1255  return rv;
1256  }
1257  }
1258 
1259  return 0;
1260 }
1261 
1262 int
1264  u32 thread_index)
1265 {
1266  app_worker_t *app_wrk;
1267  session_t *s;
1268  int rv;
1269 
1271  s->listener_handle = ((u64) thread_index << 32) | (u64) listener_index;
1272 
1273  if ((rv = app_worker_init_accepted (s)))
1274  {
1275  session_free (s);
1276  return rv;
1277  }
1278 
1280 
1281  app_wrk = app_worker_get (s->app_wrk_index);
1282  if ((rv = app_worker_accept_notify (app_wrk, s)))
1283  {
1286  session_free (s);
1287  return rv;
1288  }
1289 
1290  s->session_state = SESSION_STATE_READY;
1291 
1292  return 0;
1293 }
1294 
1295 int
1297 {
1300  app_worker_t *app_wrk;
1301  session_handle_t sh;
1302  session_t *s;
1303  int rv;
1304 
1306  rv = transport_connect (rmt->transport_proto, tep);
1307  if (rv < 0)
1308  {
1309  SESSION_DBG ("Transport failed to open connection.");
1310  return rv;
1311  }
1312 
1313  tc = transport_get_half_open (rmt->transport_proto, (u32) rv);
1314 
1315  /* For dgram type of service, allocate session and fifos now */
1316  app_wrk = app_worker_get (rmt->app_wrk_index);
1318  s->app_wrk_index = app_wrk->wrk_index;
1319  s->session_state = SESSION_STATE_OPENED;
1320  if (app_worker_init_connected (app_wrk, s))
1321  {
1322  session_free (s);
1323  return -1;
1324  }
1325 
1326  sh = session_handle (s);
1327  *rsh = sh;
1328 
1330  return app_worker_connect_notify (app_wrk, s, SESSION_E_NONE, rmt->opaque);
1331 }
1332 
1333 int
1335 {
1338  app_worker_t *app_wrk;
1339  session_t *ho;
1340  int rv;
1341 
1343  rv = transport_connect (rmt->transport_proto, tep);
1344  if (rv < 0)
1345  {
1346  SESSION_DBG ("Transport failed to open connection.");
1347  return rv;
1348  }
1349 
1350  tc = transport_get_half_open (rmt->transport_proto, (u32) rv);
1351 
1352  app_wrk = app_worker_get (rmt->app_wrk_index);
1353 
1354  /* If transport offers a vc service, only allocate established
1355  * session once the connection has been established.
1356  * In the meantime allocate half-open session for tracking purposes
1357  * associate half-open connection to it and add session to app-worker
1358  * half-open table. These are needed to allocate the established
1359  * session on transport notification, and to cleanup the half-open
1360  * session if the app detaches before connection establishment.
1361  */
1362  ho = session_alloc_for_half_open (tc);
1363  ho->app_wrk_index = app_wrk->wrk_index;
1364  ho->ho_index = app_worker_add_half_open (app_wrk, session_handle (ho));
1365  ho->opaque = rmt->opaque;
1366  *rsh = session_handle (ho);
1367 
1368  if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP))
1369  session_lookup_add_half_open (tc, tc->c_index);
1370 
1371  return 0;
1372 }
1373 
1374 int
1376 {
1378 
1379  /* Not supported for now */
1380  *rsh = SESSION_INVALID_HANDLE;
1381  return transport_connect (rmt->transport_proto, tep_cfg);
1382 }
1383 
1385  session_handle_t *);
1386 
1387 /* *INDENT-OFF* */
1392 };
1393 /* *INDENT-ON* */
1394 
1395 /**
1396  * Ask transport to open connection to remote transport endpoint.
1397  *
1398  * Stores handle for matching request with reply since the call can be
1399  * asynchronous. For instance, for TCP the 3-way handshake must complete
1400  * before reply comes. Session is only created once connection is established.
1401  *
1402  * @param app_index Index of the application requesting the connect
1403  * @param st Session type requested.
1404  * @param tep Remote transport endpoint
1405  * @param opaque Opaque data (typically, api_context) the application expects
1406  * on open completion.
1407  */
1408 int
1410 {
1412  tst = transport_protocol_service_type (rmt->transport_proto);
1413  return session_open_srv_fns[tst](rmt, rsh);
1414 }
1415 
1416 /**
1417  * Ask transport to listen on session endpoint.
1418  *
1419  * @param s Session for which listen will be called. Note that unlike
1420  * established sessions, listen sessions are not associated to a
1421  * thread.
1422  * @param sep Local endpoint to be listened on.
1423  */
1424 int
1426 {
1427  transport_endpoint_t *tep;
1428  int tc_index;
1429  u32 s_index;
1430 
1431  /* Transport bind/listen */
1432  tep = session_endpoint_to_transport (sep);
1433  s_index = ls->session_index;
1435  s_index, tep);
1436 
1437  if (tc_index < 0)
1438  return tc_index;
1439 
1440  /* Attach transport to session. Lookup tables are populated by the app
1441  * worker because local tables (for ct sessions) are not backed by a fib */
1442  ls = listen_session_get (s_index);
1443  ls->connection_index = tc_index;
1444 
1445  return 0;
1446 }
1447 
1448 /**
1449  * Ask transport to stop listening on local transport endpoint.
1450  *
1451  * @param s Session to stop listening on. It must be in state LISTENING.
1452  */
1453 int
1455 {
1458 
1459  if (s->session_state != SESSION_STATE_LISTENING)
1460  return SESSION_E_NOLISTEN;
1461 
1463 
1464  /* If no transport, assume everything was cleaned up already */
1465  if (!tc)
1466  return SESSION_E_NONE;
1467 
1468  if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP))
1470 
1472  return 0;
1473 }
1474 
1475 /**
1476  * Initialize session half-closing procedure.
1477  *
1478  * Note that half-closing will not change the state of the session.
1479  */
1480 void
1482 {
1483  if (!s)
1484  return;
1485 
1487 }
1488 
1489 /**
1490  * Initialize session closing procedure.
1491  *
1492  * Request is always sent to session node to ensure that all outstanding
1493  * requests are served before transport is notified.
1494  */
1495 void
1497 {
1498  if (!s)
1499  return;
1500 
1501  if (s->session_state >= SESSION_STATE_CLOSING)
1502  {
1503  /* Session will only be removed once both app and transport
1504  * acknowledge the close */
1505  if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED
1506  || s->session_state == SESSION_STATE_TRANSPORT_DELETED)
1508  return;
1509  }
1510 
1511  s->session_state = SESSION_STATE_CLOSING;
1513 }
1514 
1515 /**
1516  * Force a close without waiting for data to be flushed
1517  */
1518 void
1520 {
1521  if (s->session_state >= SESSION_STATE_CLOSING)
1522  return;
1523  /* Drop all outstanding tx data */
1525  s->session_state = SESSION_STATE_CLOSING;
1527 }
1528 
1529 /**
1530  * Notify transport the session can be half-disconnected.
1531  *
1532  * Must be called from the session's thread.
1533  */
1534 void
1536 {
1537  /* Only READY session can be half-closed */
1538  if (s->session_state != SESSION_STATE_READY)
1539  {
1540  return;
1541  }
1542 
1544  s->thread_index);
1545 }
1546 
1547 /**
1548  * Notify transport the session can be disconnected. This should eventually
1549  * result in a delete notification that allows us to cleanup session state.
1550  * Called for both active/passive disconnects.
1551  *
1552  * Must be called from the session's thread.
1553  */
1554 void
1556 {
1557  if (s->session_state >= SESSION_STATE_APP_CLOSED)
1558  {
1559  if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED)
1560  s->session_state = SESSION_STATE_CLOSED;
1561  /* If transport is already deleted, just free the session */
1562  else if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED)
1564  return;
1565  }
1566 
1567  /* If the tx queue wasn't drained, the transport can continue to try
1568  * sending the outstanding data (in closed state it cannot). It MUST however
1569  * at one point, either after sending everything or after a timeout, call
1570  * delete notify. This will finally lead to the complete cleanup of the
1571  * session.
1572  */
1573  s->session_state = SESSION_STATE_APP_CLOSED;
1574 
1576  s->thread_index);
1577 }
1578 
1579 /**
1580  * Force transport close
1581  */
1582 void
1584 {
1585  if (s->session_state >= SESSION_STATE_APP_CLOSED)
1586  {
1587  if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED)
1588  s->session_state = SESSION_STATE_CLOSED;
1589  else if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED)
1591  return;
1592  }
1593 
1594  s->session_state = SESSION_STATE_APP_CLOSED;
1596  s->thread_index);
1597 }
1598 
1599 /**
1600  * Cleanup transport and session state.
1601  *
1602  * Notify transport of the cleanup and free the session. This should
1603  * be called only if transport reported some error and is already
1604  * closed.
1605  */
1606 void
1608 {
1609  /* Delete from main lookup table before we axe the the transport */
1611  if (s->session_state != SESSION_STATE_TRANSPORT_DELETED)
1613  s->thread_index);
1614  /* Since we called cleanup, no delete notification will come. So, make
1615  * sure the session is properly freed. */
1617  session_free (s);
1618 }
1619 
1620 /**
1621  * Allocate event queues in the shared-memory segment
1622  *
1623  * That can only be a newly created memfd segment, that must be
1624  * mapped by all apps/stack users.
1625  */
1626 void
1628 {
1629  u32 evt_q_length = 2048, evt_size = sizeof (session_event_t);
1630  fifo_segment_t *eqs = &smm->evt_qs_segment;
1631  uword eqs_size = 64 << 20;
1632  pid_t vpp_pid = getpid ();
1633  int i;
1634 
1636  evt_q_length = smm->configured_event_queue_length;
1637 
1638  if (smm->evt_qs_segment_size)
1639  eqs_size = smm->evt_qs_segment_size;
1640 
1641  eqs->ssvm.ssvm_size = eqs_size;
1642  eqs->ssvm.my_pid = vpp_pid;
1643  eqs->ssvm.name = format (0, "%s%c", "session: evt-qs-segment", 0);
1644  /* clib_mem_vm_map_shared consumes first page before requested_va */
1646 
1648  {
1649  clib_warning ("failed to initialize queue segment");
1650  return;
1651  }
1652 
1653  fifo_segment_init (eqs);
1654 
1655  /* Special fifo segment that's filled only with mqs */
1656  eqs->h->n_mqs = vec_len (smm->wrk);
1657 
1658  for (i = 0; i < vec_len (smm->wrk); i++)
1659  {
1660  svm_msg_q_cfg_t _cfg, *cfg = &_cfg;
1662  {evt_q_length, evt_size, 0}
1663  ,
1664  {evt_q_length >> 1, 256, 0}
1665  };
1666  cfg->consumer_pid = 0;
1667  cfg->n_rings = 2;
1668  cfg->q_nitems = evt_q_length;
1669  cfg->ring_cfgs = rc;
1670 
1671  smm->wrk[i].vpp_event_queue = fifo_segment_msg_q_alloc (eqs, i, cfg);
1672  }
1673 }
1674 
1677 {
1678  return &session_main.evt_qs_segment;
1679 }
1680 
1681 u64
1683 {
1684  svm_fifo_t *f;
1685 
1686  if (!s->rx_fifo)
1687  return SESSION_INVALID_HANDLE;
1688 
1689  f = s->rx_fifo;
1690  return segment_manager_make_segment_handle (f->segment_manager,
1691  f->segment_index);
1692 }
1693 
1694 /* *INDENT-OFF* */
1700 };
1701 /* *INDENT-ON* */
1702 
1703 void
1705  const transport_proto_vft_t * vft, u8 is_ip4,
1706  u32 output_node)
1707 {
1708  session_main_t *smm = &session_main;
1709  session_type_t session_type;
1710  u32 next_index = ~0;
1711 
1712  session_type = session_type_from_proto_and_ip (transport_proto, is_ip4);
1713 
1714  vec_validate (smm->session_type_to_next, session_type);
1715  vec_validate (smm->session_tx_fns, session_type);
1716 
1717  if (output_node != ~0)
1719  session_queue_node.index, output_node);
1720 
1721  smm->session_type_to_next[session_type] = next_index;
1722  smm->session_tx_fns[session_type] =
1723  session_tx_fns[vft->transport_options.tx_type];
1724 }
1725 
1728 {
1729  session_main_t *smm = &session_main;
1731  u32 thread;
1732 
1733  smm->last_transport_proto_type += 1;
1734 
1735  for (thread = 0; thread < vec_len (smm->wrk); thread++)
1736  {
1739  }
1740 
1741  return smm->last_transport_proto_type;
1742 }
1743 
1746 {
1747  if (s->session_state != SESSION_STATE_LISTENING)
1750  else
1752  s->connection_index);
1753 }
1754 
1755 void
1757 {
1758  if (s->session_state != SESSION_STATE_LISTENING)
1760  s->connection_index, s->thread_index, tep,
1761  is_lcl);
1762  else
1764  s->connection_index, tep, is_lcl);
1765 }
1766 
1767 int
1769  transport_endpt_attr_t *attr)
1770 {
1771  if (s->session_state < SESSION_STATE_READY)
1772  return -1;
1773 
1776  is_get, attr);
1777 }
1778 
1781 {
1783  s->connection_index);
1784 }
1785 
1786 void
1788 {
1789  ASSERT (vlib_get_thread_index () == 0);
1791 }
1792 
1793 static clib_error_t *
1795 {
1796  session_main_t *smm = &session_main;
1798  u32 num_threads, preallocated_sessions_per_worker;
1800  int i;
1801 
1802  /* We only initialize once and do not de-initialized on disable */
1803  if (smm->is_initialized)
1804  goto done;
1805 
1806  num_threads = 1 /* main thread */ + vtm->n_threads;
1807 
1808  if (num_threads < 1)
1809  return clib_error_return (0, "n_thread_stacks not set");
1810 
1811  /* Allocate cache line aligned worker contexts */
1812  vec_validate_aligned (smm->wrk, num_threads - 1, CLIB_CACHE_LINE_BYTES);
1813 
1814  for (i = 0; i < num_threads; i++)
1815  {
1816  wrk = &smm->wrk[i];
1824  wrk->timerfd = -1;
1826 
1827  if (num_threads > 1)
1829 
1830  if (!smm->no_adaptive && smm->use_private_rx_mqs)
1832  }
1833 
1834  /* Allocate vpp event queues segment and queue */
1836 
1837  /* Initialize segment manager properties */
1839 
1840  /* Preallocate sessions */
1841  if (smm->preallocated_sessions)
1842  {
1843  if (num_threads == 1)
1844  {
1846  }
1847  else
1848  {
1849  int j;
1850  preallocated_sessions_per_worker =
1851  (1.1 * (f64) smm->preallocated_sessions /
1852  (f64) (num_threads - 1));
1853 
1854  for (j = 1; j < num_threads; j++)
1855  {
1856  pool_init_fixed (smm->wrk[j].sessions,
1857  preallocated_sessions_per_worker);
1858  }
1859  }
1860  }
1861 
1864  transport_init ();
1865  smm->is_initialized = 1;
1866 
1867 done:
1868 
1869  smm->is_enabled = 1;
1870 
1871  /* Enable transports */
1873  session_debug_init ();
1874 
1875  return 0;
1876 }
1877 
1878 static void
1880 {
1881  transport_enable_disable (vm, 0 /* is_en */ );
1882 }
1883 
1884 void
1886 {
1887  u8 mstate = is_en ? VLIB_NODE_STATE_INTERRUPT : VLIB_NODE_STATE_DISABLED;
1888  u8 state = is_en ? VLIB_NODE_STATE_POLLING : VLIB_NODE_STATE_DISABLED;
1890  vlib_main_t *vm;
1891  vlib_node_t *n;
1892  int n_vlibs, i;
1893 
1894  n_vlibs = vlib_get_n_threads ();
1895  for (i = 0; i < n_vlibs; i++)
1896  {
1898  /* main thread with workers and not polling */
1899  if (i == 0 && n_vlibs > 1)
1900  {
1902  if (is_en)
1903  {
1906  state);
1909  }
1910  else
1911  {
1915  }
1916  if (!sm->poll_main)
1917  continue;
1918  }
1920  }
1921 
1922  if (sm->use_private_rx_mqs)
1924 }
1925 
1926 clib_error_t *
1928 {
1929  clib_error_t *error = 0;
1930  if (is_en)
1931  {
1933  return 0;
1934 
1937  }
1938  else
1939  {
1943  }
1944 
1945  return error;
1946 }
1947 
1948 clib_error_t *
1950 {
1951  session_main_t *smm = &session_main;
1952 
1953  smm->is_enabled = 0;
1954  smm->session_enable_asap = 0;
1955  smm->poll_main = 0;
1956  smm->use_private_rx_mqs = 0;
1957  smm->no_adaptive = 0;
1959 
1960 #if (HIGH_SEGMENT_BASEVA > (4ULL << 30))
1961  smm->session_va_space_size = 128ULL << 30;
1962  smm->evt_qs_segment_size = 64 << 20;
1963 #else
1964  smm->session_va_space_size = 128 << 20;
1965  smm->evt_qs_segment_size = 1 << 20;
1966 #endif
1967 
1968  smm->last_transport_proto_type = TRANSPORT_PROTO_SRTP;
1969 
1970  return 0;
1971 }
1972 
1973 static clib_error_t *
1975 {
1976  session_main_t *smm = &session_main;
1977  if (smm->session_enable_asap)
1978  {
1980  vnet_session_enable_disable (vm, 1 /* is_en */ );
1982  }
1983  return 0;
1984 }
1985 
1988 
1989 static clib_error_t *
1991 {
1992  session_main_t *smm = &session_main;
1993  u32 nitems;
1994  uword tmp;
1995 
1996  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1997  {
1998  if (unformat (input, "event-queue-length %d", &nitems))
1999  {
2000  if (nitems >= 2048)
2001  smm->configured_event_queue_length = nitems;
2002  else
2003  clib_warning ("event queue length %d too small, ignored", nitems);
2004  }
2005  else if (unformat (input, "preallocated-sessions %d",
2006  &smm->preallocated_sessions))
2007  ;
2008  else if (unformat (input, "v4-session-table-buckets %d",
2010  ;
2011  else if (unformat (input, "v4-halfopen-table-buckets %d",
2013  ;
2014  else if (unformat (input, "v6-session-table-buckets %d",
2016  ;
2017  else if (unformat (input, "v6-halfopen-table-buckets %d",
2019  ;
2020  else if (unformat (input, "v4-session-table-memory %U",
2022  {
2023  if (tmp >= 0x100000000)
2024  return clib_error_return (0, "memory size %llx (%lld) too large",
2025  tmp, tmp);
2027  }
2028  else if (unformat (input, "v4-halfopen-table-memory %U",
2030  {
2031  if (tmp >= 0x100000000)
2032  return clib_error_return (0, "memory size %llx (%lld) too large",
2033  tmp, tmp);
2035  }
2036  else if (unformat (input, "v6-session-table-memory %U",
2038  {
2039  if (tmp >= 0x100000000)
2040  return clib_error_return (0, "memory size %llx (%lld) too large",
2041  tmp, tmp);
2043  }
2044  else if (unformat (input, "v6-halfopen-table-memory %U",
2046  {
2047  if (tmp >= 0x100000000)
2048  return clib_error_return (0, "memory size %llx (%lld) too large",
2049  tmp, tmp);
2051  }
2052  else if (unformat (input, "local-endpoints-table-memory %U",
2054  {
2055  if (tmp >= 0x100000000)
2056  return clib_error_return (0, "memory size %llx (%lld) too large",
2057  tmp, tmp);
2059  }
2060  else if (unformat (input, "local-endpoints-table-buckets %d",
2062  ;
2063  /* Deprecated but maintained for compatibility */
2064  else if (unformat (input, "evt_qs_memfd_seg"))
2065  ;
2066  else if (unformat (input, "evt_qs_seg_size %U", unformat_memory_size,
2067  &smm->evt_qs_segment_size))
2068  ;
2069  else if (unformat (input, "enable"))
2070  smm->session_enable_asap = 1;
2071  else if (unformat (input, "segment-baseva 0x%lx", &smm->session_baseva))
2072  ;
2073  else if (unformat (input, "use-app-socket-api"))
2074  appns_sapi_enable ();
2075  else if (unformat (input, "poll-main"))
2076  smm->poll_main = 1;
2077  else if (unformat (input, "use-private-rx-mqs"))
2078  smm->use_private_rx_mqs = 1;
2079  else if (unformat (input, "no-adaptive"))
2080  smm->no_adaptive = 1;
2081  else
2082  return clib_error_return (0, "unknown input `%U'",
2083  format_unformat_error, input);
2084  }
2085  return 0;
2086 }
2087 
2089 
2090 /*
2091  * fd.io coding-style-patch-verification: ON
2092  *
2093  * Local Variables:
2094  * eval: (c-set-style "gnu")
2095  * End:
2096  */
vlib_process_signal_event_mt
static void vlib_process_signal_event_mt(vlib_main_t *vm, uword node_index, uword type_opaque, uword data)
Signal event to process from any thread.
Definition: node_funcs.h:1043
load_balance.h
vec_reset_length
#define vec_reset_length(v)
Reset vector length to zero NULL-pointer tolerant.
Definition: vec_bootstrap.h:194
ssvm_private_t::requested_va
uword requested_va
Definition: ssvm.h:85
tmp
u32 * tmp
Definition: interface_output.c:1078
vlib_buffer_t::next_buffer
u32 next_buffer
Next buffer for this linked-list of buffers.
Definition: buffer.h:149
svm_msg_q_cfg_::n_rings
u32 n_rings
number of msg rings
Definition: message_queue.h:89
transport_cleanup
void transport_cleanup(transport_proto_t tp, u32 conn_index, u8 thread_index)
Definition: transport.c:302
svm_fifo_set_event
static u8 svm_fifo_set_event(svm_fifo_t *f)
Set fifo event flag.
Definition: svm_fifo.h:790
SESSION_CTRL_EVT_RPC
@ SESSION_CTRL_EVT_RPC
Definition: session_types.h:333
vlib_num_workers
static u32 vlib_num_workers()
Definition: threads.h:354
SESSION_MQ_N_RINGS
@ SESSION_MQ_N_RINGS
Definition: session_types.h:403
app_worker_::wrk_index
u32 wrk_index
Worker index in global worker pool.
Definition: application.h:37
session_main_::configured_v6_session_table_memory
u32 configured_v6_session_table_memory
Definition: session.h:233
session_tx_fifo_dequeue_and_snd
session_fifo_rx_fn session_tx_fifo_dequeue_and_snd
vlib_worker_thread_barrier_release
void vlib_worker_thread_barrier_release(vlib_main_t *vm)
Definition: threads.c:1386
sesssion_reschedule_tx
void sesssion_reschedule_tx(transport_connection_t *tc)
Definition: session.c:161
session_error_t
enum session_error_ session_error_t
session_evt_type_t
session_evt_type_t
Definition: session_types.h:326
session_cleanup_notify
static void session_cleanup_notify(session_t *s, session_cleanup_ntf_t ntf)
Definition: session.c:268
session_enqueue_notify
int session_enqueue_notify(session_t *s)
Definition: session.c:778
session_main_::session_enable_asap
u8 session_enable_asap
Enable session manager at startup.
Definition: session.h:208
thread_index
u32 thread_index
Definition: nat44_ei_hairpinning.c:492
segment_manager_get
segment_manager_t * segment_manager_get(u32 index)
Definition: segment_manager.c:532
session_lookup_del_connection
int session_lookup_del_connection(transport_connection_t *tc)
Delete transport connection from session table.
Definition: session_lookup.c:341
session_dgram_header_
Definition: session_types.h:437
session_dequeue_notify
int session_dequeue_notify(session_t *s)
Definition: session.c:816
buffer
char * buffer
Definition: cJSON.h:163
session_::session_index
u32 session_index
Index in thread pool where session was allocated.
Definition: session_types.h:188
transport_protocol_is_cl
u8 transport_protocol_is_cl(transport_proto_t tp)
Definition: transport.c:356
vlib_node_add_next
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
Definition: node_funcs.h:1177
SESSION_FT_ACTION_ENQUEUED
@ SESSION_FT_ACTION_ENQUEUED
Definition: session_types.h:121
session_fifo_rx_fn
int() session_fifo_rx_fn(session_worker_t *wrk, vlib_node_runtime_t *node, session_evt_elt_t *e, int *n_tx_packets)
Definition: session.h:163
SESSION_MQ_IO_EVT_RING
@ SESSION_MQ_IO_EVT_RING
Definition: session_types.h:401
session_type_t
u8 session_type_t
Definition: session_types.h:110
svm_msg_q_add_and_unlock
void svm_msg_q_add_and_unlock(svm_msg_q_t *mq, svm_msg_q_msg_t *msg)
Producer enqueue one message to queue with mutex held.
Definition: message_queue.c:394
session_transport_half_close
void session_transport_half_close(session_t *s)
Notify transport the session can be half-disconnected.
Definition: session.c:1535
session_close
void session_close(session_t *s)
Initialize session closing procedure.
Definition: session.c:1496
next_index
nat44_ei_hairpin_src_next_t next_index
Definition: nat44_ei_hairpinning.c:412
session_clone_safe
static session_t * session_clone_safe(u32 session_index, u32 thread_index)
Definition: session.h:433
session_enqueue_discard_chain_bytes
static void session_enqueue_discard_chain_bytes(vlib_main_t *vm, vlib_buffer_t *b, vlib_buffer_t **chain_b, u32 n_bytes_to_drop)
Discards bytes from buffer chain.
Definition: session.c:428
session_transport_closing_notify
void session_transport_closing_notify(transport_connection_t *tc)
Notification from transport that connection is being closed.
Definition: session.c:1062
vlib_get_buffer
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:111
svm_fifo_n_subscribers
static u8 svm_fifo_n_subscribers(svm_fifo_t *f)
Fifo number of subscribers getter.
Definition: svm_fifo.h:706
svm_fifo_enqueue_with_offset
int svm_fifo_enqueue_with_offset(svm_fifo_t *f, u32 offset, u32 len, u8 *src)
Enqueue a future segment.
Definition: svm_fifo.c:906
svm_msg_q_alloc_msg_w_ring
svm_msg_q_msg_t svm_msg_q_alloc_msg_w_ring(svm_msg_q_t *mq, u32 ring_index)
Allocate message buffer on ring.
Definition: message_queue.c:221
f
vlib_frame_t * f
Definition: interface_output.c:1080
pointer_to_uword
static uword pointer_to_uword(const void *p)
Definition: types.h:131
session_half_open_delete_notify
void session_half_open_delete_notify(transport_connection_t *tc)
Definition: session.c:347
session_transport_cleanup
void session_transport_cleanup(session_t *s)
Cleanup transport and session state.
Definition: session.c:1607
app_worker_add_half_open
int app_worker_add_half_open(app_worker_t *app_wrk, session_handle_t sh)
Definition: application_worker.c:384
vlib_node_set_state
static void vlib_node_set_state(vlib_main_t *vm, u32 node_index, vlib_node_state_t new_state)
Set node dispatch state.
Definition: node_funcs.h:175
pool_elt_at_index
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:553
session_get_endpoint
void session_get_endpoint(session_t *s, transport_endpoint_t *tep, u8 is_lcl)
Definition: session.c:1756
session_worker_::timerfd
int timerfd
Timerfd used to periodically signal wrk session queue node.
Definition: session.h:110
ssvm_private_t::ssvm_size
uword ssvm_size
Definition: ssvm.h:84
CLIB_US_TIME_FREQ
#define CLIB_US_TIME_FREQ
Definition: time.h:207
svm_msg_q_msg_data
void * svm_msg_q_msg_data(svm_msg_q_t *mq, svm_msg_q_msg_t *msg)
Get data for message in queue.
Definition: message_queue.c:287
session_::tx_fifo
svm_fifo_t * tx_fifo
Definition: session_types.h:179
session_send_evt_to_thread
static int session_send_evt_to_thread(void *data, void *args, u32 thread_index, session_evt_type_t evt_type)
Definition: session.c:28
pool_get_aligned
#define pool_get_aligned(P, E, A)
Allocate an object E from a pool P with alignment A.
Definition: pool.h:249
next
u16 * next
Definition: nat44_ei_out2in.c:718
session_config_fn
static clib_error_t * session_config_fn(vlib_main_t *vm, unformat_input_t *input)
Definition: session.c:1990
svm_fifo_peek
int svm_fifo_peek(svm_fifo_t *f, u32 offset, u32 len, u8 *dst)
Peek data from fifo.
Definition: svm_fifo.c:1141
session_manager_main_enable
static clib_error_t * session_manager_main_enable(vlib_main_t *vm)
Definition: session.c:1794
clib_mem_free
static void clib_mem_free(void *p)
Definition: mem.h:311
fifo_segment_header_::n_mqs
u8 n_mqs
Num mqs for mqs segment.
Definition: fifo_types.h:148
svm_fifo_needs_deq_ntf
static u8 svm_fifo_needs_deq_ntf(svm_fifo_t *f, u32 n_last_deq)
Check if fifo needs dequeue notification.
Definition: svm_fifo.h:882
fifo_segment_t
Definition: fifo_segment.h:67
session_main_::local_endpoints_table_memory
u32 local_endpoints_table_memory
Transport table (preallocation) size parameters.
Definition: session.h:238
session_segment_handle
u64 session_segment_handle(session_t *s)
Definition: session.c:1682
session_endpoint_to_transport_cfg
#define session_endpoint_to_transport_cfg(_sep)
Definition: session_types.h:88
session_
Definition: session_types.h:175
session_main_::preallocated_sessions
u32 preallocated_sessions
Preallocate session config parameter.
Definition: session.h:242
segment_manager_t
struct _segment_manager segment_manager_t
clib_error_return
#define clib_error_return(e, args...)
Definition: error.h:99
session_endpoint_cfg_t
struct _session_endpoint_cfg session_endpoint_cfg_t
transport_service_type_t
enum transport_service_type_ transport_service_type_t
thread
pthread_t thread[MAX_CONNS]
Definition: main.c:142
session_handle_t
u64 session_handle_t
Definition: session_types.h:111
wrk
session_worker_t * wrk
Definition: application.c:490
session_make_handle
static session_handle_t session_make_handle(u32 session_index, u32 data)
Definition: session_types.h:309
transport_stop_listen
u32 transport_stop_listen(transport_proto_t tp, u32 conn_index)
Definition: transport.c:350
transport_proto_vft_t
struct _transport_proto_vft transport_proto_vft_t
svm_msg_q_cfg_::q_nitems
u32 q_nitems
msg queue size (not rings)
Definition: message_queue.h:88
SESSION_FT_ACTION_DEQUEUED
@ SESSION_FT_ACTION_DEQUEUED
Definition: session_types.h:122
listen_session_get
static session_t * listen_session_get(u32 ls_index)
Definition: session.h:653
session_register_transport
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:1704
session_half_open_migrated_notify
int session_half_open_migrated_notify(transport_connection_t *tc)
Definition: session.c:373
APP_INVALID_INDEX
#define APP_INVALID_INDEX
Definition: application.h:226
SESSION_IO_EVT_RX
@ SESSION_IO_EVT_RX
Definition: session_types.h:328
svm_msg_q_lock
static int svm_msg_q_lock(svm_msg_q_t *mq)
Lock, or block trying, the message queue.
Definition: message_queue.h:372
svm_msg_q_msg_t
Definition: message_queue.h:93
session_::thread_index
u8 thread_index
Index of the thread that allocated the session.
Definition: session_types.h:194
pool_put
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:305
session_::session_type
session_type_t session_type
Type built from transport and network protocol types.
Definition: session_types.h:182
vm
vlib_main_t * vm
X-connect all packets from the HOST to the PHY.
Definition: nat44_ei.c:3047
SESSION_IO_EVT_BUILTIN_TX
@ SESSION_IO_EVT_BUILTIN_TX
Definition: session_types.h:332
session_delete
static void session_delete(session_t *s)
Cleans up session and lookup table.
Definition: session.c:292
state
vl_api_dhcp_client_state_t state
Definition: dhcp.api:201
session_transport_closed_notify
void session_transport_closed_notify(transport_connection_t *tc)
Notification from transport that it is closed.
Definition: session.c:1150
session_queue_run_on_main_thread
void session_queue_run_on_main_thread(vlib_main_t *vm)
Definition: session.c:1787
application_
Definition: application.h:108
transport_reset
void transport_reset(transport_proto_t tp, u32 conn_index, u8 thread_index)
Definition: transport.c:334
session_thread_from_handle
static u32 session_thread_from_handle(session_handle_t handle)
Definition: session_types.h:295
CLIB_ASSERT_ENABLE
#define CLIB_ASSERT_ENABLE
Definition: error_bootstrap.h:59
session_main_::session_type_to_next
u32 * session_type_to_next
Per session type output nodes.
Definition: session.h:190
session_lookup_del_half_open
int session_lookup_del_half_open(transport_connection_t *tc)
Definition: session_lookup.c:805
app_namespaces_init
void app_namespaces_init(void)
Definition: application_namespace.c:176
transport_connection_t
struct _transport_connection transport_connection_t
unformat_input_t
struct _unformat_input_t unformat_input_t
session_lookup_init
void session_lookup_init(void)
Definition: session_lookup.c:1702
transport_endpoint_pair_
Definition: transport_types.h:212
TRANSPORT_TX_N_FNS
@ TRANSPORT_TX_N_FNS
Definition: transport_types.h:34
vlib_start_process
void vlib_start_process(vlib_main_t *vm, uword process_index)
Definition: main.c:1416
app_worker_del_half_open
int app_worker_del_half_open(app_worker_t *app_wrk, session_t *s)
Definition: application_worker.c:396
session_free
void session_free(session_t *s)
Definition: session.c:227
session_open_app
int session_open_app(session_endpoint_cfg_t *rmt, session_handle_t *rsh)
Definition: session.c:1375
session_alloc_for_half_open
session_t * session_alloc_for_half_open(transport_connection_t *tc)
Definition: session.c:411
session_program_transport_ctrl_evt
static void session_program_transport_ctrl_evt(session_t *s, session_evt_type_t evt)
Definition: session.c:177
clib_rwlock_writer_unlock
static void clib_rwlock_writer_unlock(clib_rwlock_t *p)
Definition: lock.h:206
session_worker_::new_head
clib_llist_index_t new_head
Head of list of elements.
Definition: session.h:131
session_enqueue_dgram_connection
int session_enqueue_dgram_connection(session_t *s, session_dgram_hdr_t *hdr, vlib_buffer_t *b, u8 proto, u8 queue_event)
Definition: session.c:619
SSVM_SEGMENT_MEMFD
@ SSVM_SEGMENT_MEMFD
Definition: ssvm.h:50
session_main_::configured_v6_halfopen_table_buckets
u32 configured_v6_halfopen_table_buckets
Definition: session.h:234
error
Definition: cJSON.c:88
session_evt_alloc_new
static session_evt_elt_t * session_evt_alloc_new(session_worker_t *wrk)
Definition: session.h:308
app_worker_reset_notify
int app_worker_reset_notify(app_worker_t *app_wrk, session_t *s)
Definition: application_worker.c:424
session_main_::wrk
session_worker_t * wrk
Worker contexts.
Definition: session.h:176
session_worker_::last_vlib_time
clib_time_type_t last_vlib_time
vlib_time_now last time around the track
Definition: session.h:98
pool_get_aligned_will_expand
#define pool_get_aligned_will_expand(P, YESNO, A)
See if pool_get will expand the pool or not.
Definition: pool.h:261
session_alloc_for_connection
session_t * session_alloc_for_connection(transport_connection_t *tc)
Definition: session.c:392
svm_msg_q_ring_cfg_
Definition: message_queue.h:78
svm_fifo_t
struct _svm_fifo svm_fifo_t
VLIB_CONFIG_FUNCTION
#define VLIB_CONFIG_FUNCTION(x, n,...)
Definition: init.h:181
unformat
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
app_worker_cleanup_notify
int app_worker_cleanup_notify(app_worker_t *app_wrk, session_t *s, session_cleanup_ntf_t ntf)
Definition: application_worker.c:432
session_transport_close
void session_transport_close(session_t *s)
Notify transport the session can be disconnected.
Definition: session.c:1555
SESSION_CLEANUP_TRANSPORT
@ SESSION_CLEANUP_TRANSPORT
Definition: session_types.h:115
application_get
application_t * application_get(u32 app_index)
Definition: application.c:710
SESSION_CTRL_EVT_CLOSE
@ SESSION_CTRL_EVT_CLOSE
Definition: session_types.h:335
session_::app_wrk_index
u32 app_wrk_index
Index of the app worker that owns the session.
Definition: session_types.h:191
pool_init_fixed
#define pool_init_fixed(pool, max_elts)
initialize a fixed-size, preallocated pool
Definition: pool.h:85
session_stream_accept
int session_stream_accept(transport_connection_t *tc, u32 listener_index, u32 thread_index, u8 notify)
Accept a stream session.
Definition: session.c:1228
app_worker_init_connected
int app_worker_init_connected(app_worker_t *app_wrk, session_t *s)
Definition: application_worker.c:358
svm_fifo_seg_
Definition: svm_fifo.h:52
vlib_buffer_advance
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:276
session_ft_action_t
enum session_ft_action_ session_ft_action_t
session_::rx_fifo
svm_fifo_t * rx_fifo
Pointers to rx/tx buffers.
Definition: session_types.h:178
unformat_memory_size
unformat_function_t unformat_memory_size
Definition: format.h:288
session_main_::session_va_space_size
uword session_va_space_size
Definition: session.h:224
session_switch_pool_args_t
struct _session_switch_pool_args session_switch_pool_args_t
SESSION_IO_EVT_BUILTIN_RX
@ SESSION_IO_EVT_BUILTIN_RX
Definition: session_types.h:331
session_add_transport_proto
transport_proto_t session_add_transport_proto(void)
Definition: session.c:1727
vec_len
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
Definition: vec_bootstrap.h:142
len
u8 len
Definition: ip_types.api:103
svm_msg_q_is_full
static u8 svm_msg_q_is_full(svm_msg_q_t *mq)
Check if message queue is full.
Definition: message_queue.h:319
session_::app_index
u32 app_index
Index of application that owns the listener.
Definition: session_types.h:203
vec_add2
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
Definition: vec.h:644
SESSION_CTRL_EVT_HALF_CLOSE
@ SESSION_CTRL_EVT_HALF_CLOSE
Definition: session_types.h:334
vec_add1
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:606
session_node_enable_disable
void session_node_enable_disable(u8 is_en)
Definition: session.c:1885
segment_manager_dealloc_fifos
void segment_manager_dealloc_fifos(svm_fifo_t *rx_fifo, svm_fifo_t *tx_fifo)
Definition: segment_manager.c:810
session_enqueue_stream_connection
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:564
session_main_::configured_event_queue_length
u32 configured_event_queue_length
vpp fifo event queue configured length
Definition: session.h:220
svm_fifo_clear_deq_ntf
static void svm_fifo_clear_deq_ntf(svm_fifo_t *f)
Clear the want notification flag and set has notification.
Definition: svm_fifo.h:848
session_get_transport
transport_connection_t * session_get_transport(session_t *s)
Definition: session.c:1745
session_listen
int session_listen(session_t *ls, session_endpoint_cfg_t *sep)
Ask transport to listen on session endpoint.
Definition: session.c:1425
session_worker_::session_to_enqueue
u32 ** session_to_enqueue
Per-proto vector of sessions to enqueue.
Definition: session.h:107
session_main_::session_baseva
uword session_baseva
Session ssvm segment configs.
Definition: session.h:223
session_evt_elt
Definition: session.h:64
fifo_segment_msg_q_alloc
svm_msg_q_t * fifo_segment_msg_q_alloc(fifo_segment_t *fs, u32 mq_index, svm_msg_q_cfg_t *cfg)
Allocate message queue on segment.
Definition: fifo_segment.c:1078
app_worker_close_notify
int app_worker_close_notify(app_worker_t *app_wrk, session_t *s)
Definition: application_worker.c:407
transport_init
void transport_init(void)
Definition: transport.c:837
vlib_worker_thread_barrier_sync
#define vlib_worker_thread_barrier_sync(X)
Definition: threads.h:194
PREDICT_FALSE
#define PREDICT_FALSE(x)
Definition: clib.h:124
session_tx_fifo_peek_and_snd
session_fifo_rx_fn session_tx_fifo_peek_and_snd
vlib_get_thread_index
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:208
session_open_cl
int session_open_cl(session_endpoint_cfg_t *rmt, session_handle_t *rsh)
Definition: session.c:1296
app_worker_get_if_valid
app_worker_t * app_worker_get_if_valid(u32 wrk_index)
Definition: application_worker.c:47
session_enqueue_notify_thread
void session_enqueue_notify_thread(session_handle_t sh)
Like session_enqueue_notify, but can be called from a thread that does not own the session.
Definition: session.c:801
session_send_io_evt_to_thread_custom
int session_send_io_evt_to_thread_custom(void *data, u32 thread_index, session_evt_type_t evt_type)
Definition: session.c:91
vlib_get_buffer_index
static u32 vlib_get_buffer_index(vlib_main_t *vm, void *p)
Translate buffer pointer into buffer index.
Definition: buffer_funcs.h:324
unformat_check_input
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:163
vlib_config_function_runtime_t
Definition: init.h:68
session_fifo_tuning
void session_fifo_tuning(session_t *s, svm_fifo_t *f, session_ft_action_t act, u32 len)
Definition: session.c:532
transport_connect
int transport_connect(transport_proto_t tp, transport_endpoint_cfg_t *tep)
Definition: transport.c:315
vec_validate_aligned
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
Definition: vec.h:534
session_main_::session_tx_fns
session_fifo_rx_fn ** session_tx_fns
Per transport rx function that can either dequeue or peek.
Definition: session.h:185
session_lookup_add_half_open
int session_lookup_add_half_open(transport_connection_t *tc, u64 value)
Definition: session_lookup.c:779
session_main_flush_all_enqueue_events
int session_main_flush_all_enqueue_events(u8 transport_proto)
Definition: session.c:878
session_stop_listen
int session_stop_listen(session_t *s)
Ask transport to stop listening on local transport endpoint.
Definition: session.c:1454
clib_rwlock_writer_lock
static void clib_rwlock_writer_lock(clib_rwlock_t *p)
Definition: lock.h:192
session_worker_::peekers_rw_locks
clib_rwlock_t peekers_rw_locks
Peekers rw lock.
Definition: session.h:137
transport_endpt_attr_
Definition: transport_types.h:252
uword
u64 uword
Definition: types.h:112
session_dgram_accept
int session_dgram_accept(transport_connection_t *tc, u32 listener_index, u32 thread_index)
Definition: session.c:1263
svm_fifo_enqueue_segments
int svm_fifo_enqueue_segments(svm_fifo_t *f, const svm_fifo_seg_t segs[], u32 n_segs, u8 allow_partial)
Enqueue array of svm_fifo_seg_t in order.
Definition: svm_fifo.c:972
SESSION_IO_EVT_TX_FLUSH
@ SESSION_IO_EVT_TX_FLUSH
Definition: session_types.h:330
session_open_service_fn
int(* session_open_service_fn)(session_endpoint_cfg_t *, session_handle_t *)
Definition: session.c:1384
session_main_::configured_v6_halfopen_table_memory
u32 configured_v6_halfopen_table_memory
Definition: session.h:235
session_enqueue_notify_inline
static int session_enqueue_notify_inline(session_t *s)
Notify session peer that new data has been enqueued.
Definition: session.c:739
vlib_thread_is_main_w_barrier
static u8 vlib_thread_is_main_w_barrier(void)
Definition: threads.h:506
session_evt_alloc_ctrl
static session_evt_elt_t * session_evt_alloc_ctrl(session_worker_t *wrk)
Definition: session.h:284
vlib_get_node
static vlib_node_t * vlib_get_node(vlib_main_t *vm, u32 i)
Get vlib node by index.
Definition: node_funcs.h:86
SESSION_Q_PROCESS_STOP
@ SESSION_Q_PROCESS_STOP
Definition: session.h:254
session_main
session_main_t session_main
Definition: session.c:25
session_index_from_handle
static u32 session_index_from_handle(session_handle_t handle)
Definition: session_types.h:289
session_send_rpc_evt_to_thread
void session_send_rpc_evt_to_thread(u32 thread_index, void *fp, void *rpc_args)
Definition: session.c:116
i
sll srl srl sll sra u16x4 i
Definition: vector_sse42.h:261
session_main_::configured_v4_session_table_buckets
u32 configured_v4_session_table_buckets
Session table size parameters.
Definition: session.h:228
svm_fifo_dequeue_drop
int svm_fifo_dequeue_drop(svm_fifo_t *f, u32 len)
Dequeue and drop bytes from fifo.
Definition: svm_fifo.c:1168
f64
double f64
Definition: types.h:142
session_open
int session_open(session_endpoint_cfg_t *rmt, session_handle_t *rsh)
Ask transport to open connection to remote transport endpoint.
Definition: session.c:1409
session_debug_init
void session_debug_init(void)
Definition: session_debug.c:115
session_handle
static session_handle_t session_handle(session_t *s)
Definition: session_types.h:283
session_main_flush_enqueue_events
int session_main_flush_enqueue_events(u8 transport_proto, u32 thread_index)
Flushes queue of sessions that are to be notified of new data enqueued events.
Definition: session.c:846
svm_fifo_enqueue
int svm_fifo_enqueue(svm_fifo_t *f, u32 len, const u8 *src)
Enqueue data to fifo.
Definition: svm_fifo.c:847
svm_msg_q_cfg_::ring_cfgs
svm_msg_q_ring_cfg_t * ring_cfgs
array of ring cfgs
Definition: message_queue.h:90
session_half_open_migrate_notify
void session_half_open_migrate_notify(transport_connection_t *tc)
Definition: session.c:363
format_unformat_error
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
session_get_from_handle
static session_t * session_get_from_handle(session_handle_t handle)
Definition: session.h:356
session_cleanup_half_open
void session_cleanup_half_open(session_handle_t ho_handle)
Definition: session.c:304
vec_validate
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment)
Definition: vec.h:523
app_worker_init_accepted
int app_worker_init_accepted(session_t *s)
Definition: application_worker.c:328
svm_fifo_max_dequeue_prod
static u32 svm_fifo_max_dequeue_prod(svm_fifo_t *f)
Fifo max bytes to dequeue optimized for producer.
Definition: svm_fifo.h:501
session_main_::is_enabled
u8 is_enabled
Session manager is enabled.
Definition: session.h:202
session_main_::use_private_rx_mqs
u8 use_private_rx_mqs
Allocate private rx mqs for external apps.
Definition: session.h:214
it
save_rewrite_length must be aligned so that reass doesn t overwrite it
Definition: buffer.h:421
SESSION_IO_EVT_TX
@ SESSION_IO_EVT_TX
Definition: session_types.h:329
session_reset
void session_reset(session_t *s)
Force a close without waiting for data to be flushed.
Definition: session.c:1519
session_main_::is_initialized
u8 is_initialized
Session manager initialized (not necessarily enabled)
Definition: session.h:205
CLIB_CACHE_LINE_BYTES
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
transport_get_endpoint
void transport_get_endpoint(transport_proto_t tp, u32 conn_index, u32 thread_index, transport_endpoint_t *tep, u8 is_lcl)
Definition: transport.c:380
session_main_::evt_qs_segment
fifo_segment_t evt_qs_segment
Event queues memfd segment.
Definition: session.h:179
session_get
static session_t * session_get(u32 si, u32 thread_index)
Definition: session.h:336
transport_cleanup_half_open
void transport_cleanup_half_open(transport_proto_t tp, u32 conn_index)
Definition: transport.c:308
svm_msg_q_
Definition: message_queue.h:72
session_main_::configured_v6_session_table_buckets
u32 configured_v6_session_table_buckets
Definition: session.h:232
transport_get_listener_endpoint
void transport_get_listener_endpoint(transport_proto_t tp, u32 conn_index, transport_endpoint_t *tep, u8 is_lcl)
Definition: transport.c:396
session_transport_delete_notify
void session_transport_delete_notify(transport_connection_t *tc)
Notification from transport that connection is being deleted.
Definition: session.c:1084
app_worker_connect_notify
int app_worker_connect_notify(app_worker_t *app_wrk, session_t *s, session_error_t err, u32 opaque)
Definition: application_worker.c:375
clib_rwlock_init
static void clib_rwlock_init(clib_rwlock_t *p)
Definition: lock.h:152
session_send_ctrl_evt_to_thread
int session_send_ctrl_evt_to_thread(session_t *s, session_evt_type_t evt_type)
Definition: session.c:98
vlib_buffer_t::current_length
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:122
session_worker_::last_vlib_us_time
clib_us_time_t last_vlib_us_time
vlib_time_now rounded to us precision and as u64
Definition: session.h:101
svm_fifo_dequeue_drop_all
void svm_fifo_dequeue_drop_all(svm_fifo_t *f)
Drop all data from fifo.
Definition: svm_fifo.c:1207
session_worker_::vpp_event_queue
svm_msg_q_t * vpp_event_queue
vpp event message queue for worker
Definition: session.h:95
session_::listener_handle
session_handle_t listener_handle
Parent listener session index if the result of an accept.
Definition: session_types.h:208
session_type_from_proto_and_ip
static session_type_t session_type_from_proto_and_ip(transport_proto_t proto, u8 is_ip4)
Definition: session_types.h:224
data
u8 data[128]
Definition: ipsec_types.api:92
session_tx_fns
static session_fifo_rx_fn * session_tx_fns[TRANSPORT_TX_N_FNS]
Definition: session.c:1695
session_main_loop_init
static clib_error_t * session_main_loop_init(vlib_main_t *vm)
Definition: session.c:1974
fifo_segment_t::ssvm
ssvm_private_t ssvm
ssvm segment data
Definition: fifo_segment.h:69
session_main_::last_transport_proto_type
transport_proto_t last_transport_proto_type
Definition: session.h:195
session_worker_::event_elts
session_evt_elt_t * event_elts
Pool of session event list elements.
Definition: session.h:122
session_endpoint_to_transport
#define session_endpoint_to_transport(_sep)
Definition: session_types.h:87
session_queue_process_node
vlib_node_registration_t session_queue_process_node
(constructor) VLIB_REGISTER_NODE (session_queue_process_node)
Definition: session_node.c:1942
vec_free
#define vec_free(V)
Free vector's memory (no header).
Definition: vec.h:395
always_inline
#define always_inline
Definition: rdma_mlx5dv.h:23
clib_bihash_value
template key/value backing page structure
Definition: bihash_doc.h:44
TRANSPORT_CONNECTION_F_NO_LOOKUP
@ TRANSPORT_CONNECTION_F_NO_LOOKUP
Don't register connection in lookup.
Definition: transport_types.h:52
session_tx_fifo_dequeue_drop
u32 session_tx_fifo_dequeue_drop(transport_connection_t *tc, u32 max_bytes)
Definition: session.c:692
session_main_get_evt_q_segment
fifo_segment_t * session_main_get_evt_q_segment(void)
Definition: session.c:1676
svm_fifo_max_enqueue_prod
static u32 svm_fifo_max_enqueue_prod(svm_fifo_t *f)
Maximum number of bytes that can be enqueued into fifo.
Definition: svm_fifo.h:607
session_open_vc
int session_open_vc(session_endpoint_cfg_t *rmt, session_handle_t *rsh)
Definition: session.c:1334
session_tx_fifo_peek_bytes
int session_tx_fifo_peek_bytes(transport_connection_t *tc, u8 *buffer, u32 offset, u32 max_bytes)
Definition: session.c:684
u64
unsigned long u64
Definition: types.h:89
session_lookup_del_session
int session_lookup_del_session(session_t *s)
Definition: session_lookup.c:365
session_main_::configured_v4_halfopen_table_memory
u32 configured_v4_halfopen_table_memory
Definition: session.h:231
format
description fragment has unexpected format
Definition: map.api:433
ASSERT
#define ASSERT(truth)
Definition: error_bootstrap.h:69
ssvm_private_t::my_pid
u32 my_pid
Definition: ssvm.h:86
ssvm_server_init
int ssvm_server_init(ssvm_private_t *ssvm, ssvm_segment_type_t type)
Definition: ssvm.c:433
vlib_thread_main_t::n_threads
u32 n_threads
Definition: threads.h:292
SESSION_DBG
#define SESSION_DBG(_fmt, _args...)
Definition: session_debug.h:329
session_get_if_valid
static session_t * session_get_if_valid(u64 si, u32 thread_index)
Definition: session.h:343
session_::opaque
u32 opaque
Opaque, for general use.
Definition: session_types.h:218
u32
unsigned int u32
Definition: types.h:88
SESSION_CLEANUP_SESSION
@ SESSION_CLEANUP_SESSION
Definition: session_types.h:116
VLIB_INIT_FUNCTION
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:172
listen_session_get_transport
transport_connection_t * listen_session_get_transport(session_t *s)
Definition: session.c:1780
transport_endpoint_
Definition: transport_types.h:193
transport_start_listen
u32 transport_start_listen(transport_proto_t tp, u32 session_index, transport_endpoint_t *tep)
Definition: transport.c:343
transport_close
void transport_close(transport_proto_t tp, u32 conn_index, u8 thread_index)
Definition: transport.c:328
vlib_thread_main_t
Definition: threads.h:264
vlib_node_set_interrupt_pending
static void vlib_node_set_interrupt_pending(vlib_main_t *vm, u32 node_index)
Definition: node_funcs.h:249
ho_session_alloc
static session_t * ho_session_alloc(void)
Definition: session.h:666
app_worker_lock_and_send_event
int app_worker_lock_and_send_event(app_worker_t *app, session_t *s, u8 evt_type)
Send event to application.
Definition: application_worker.c:706
transport_proto_t
enum _transport_proto transport_proto_t
app_worker_get
app_worker_t * app_worker_get(u32 wrk_index)
Definition: application_worker.c:41
si
vnet_sw_interface_t * si
Definition: interface_output.c:398
session_worker_::vm
vlib_main_t * vm
Convenience pointer to this worker's vlib_main.
Definition: session.h:104
app_worker_
Definition: application.h:32
clib_mem_get_page_size
static_always_inline uword clib_mem_get_page_size(void)
Definition: mem.h:468
session_half_close
void session_half_close(session_t *s)
Initialize session half-closing procedure.
Definition: session.c:1481
application_get_worker
app_worker_t * application_get_worker(application_t *app, u32 wrk_map_index)
Definition: application.c:950
transport_protocol_service_type
transport_service_type_t transport_protocol_service_type(transport_proto_t tp)
Definition: transport.c:290
vlib_get_main_by_index
static vlib_main_t * vlib_get_main_by_index(u32 thread_index)
Definition: global_funcs.h:29
session_half_open_free
static void session_half_open_free(session_t *ho)
Definition: session.c:329
session_tx_fifo_dequeue_internal
session_fifo_rx_fn session_tx_fifo_dequeue_internal
TRANSPORT_N_SERVICES
@ TRANSPORT_N_SERVICES
Definition: transport_types.h:42
session_transport_reset
void session_transport_reset(session_t *s)
Force transport close.
Definition: session.c:1583
elt
app_rx_mq_elt_t * elt
Definition: application.c:488
appns_sapi_enable
void appns_sapi_enable(void)
Definition: application_namespace.c:164
segment_manager_main_init
void segment_manager_main_init(void)
Definition: segment_manager.c:960
SESSION_INVALID_HANDLE
#define SESSION_INVALID_HANDLE
Definition: session_types.h:23
session_enqueue_notify_rpc
static void session_enqueue_notify_rpc(void *arg)
Definition: session.c:784
ip4_fib.h
session_worker_::pending_connects
clib_llist_index_t pending_connects
List of pending connects for first worker.
Definition: session.h:149
transport_enable_disable
void transport_enable_disable(vlib_main_t *vm, u8 is_en)
Definition: transport.c:826
transport_connection_is_descheduled
static u8 transport_connection_is_descheduled(transport_connection_t *tc)
Definition: transport.h:211
session_worker_::sessions
session_t * sessions
Worker session pool.
Definition: session.h:92
fifo_segment_init
int fifo_segment_init(fifo_segment_t *fs)
Initialize fifo segment shared header.
Definition: fifo_segment.c:295
svm_msg_q_cfg_
Definition: message_queue.h:85
svm_msg_q_cfg_::consumer_pid
int consumer_pid
pid of msg consumer
Definition: message_queue.h:87
app_worker_get_connect_segment_manager
segment_manager_t * app_worker_get_connect_segment_manager(app_worker_t *)
Definition: application_worker.c:524
session_enqueue_chain_tail
static int session_enqueue_chain_tail(session_t *s, vlib_buffer_t *b, u32 offset, u8 is_in_order)
Enqueue buffer chain tail.
Definition: session.c:459
clib_memset
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
vlib_main_t
Definition: main.h:102
session_worker_::old_head
clib_llist_index_t old_head
Head of list of pending events.
Definition: session.h:134
session_main_::no_adaptive
u8 no_adaptive
Do not enable session queue node adaptive mode.
Definition: session.h:217
vlib_get_n_threads
static u32 vlib_get_n_threads()
Definition: global_funcs.h:23
session_get_transport_proto
static transport_proto_t session_get_transport_proto(session_t *s)
Definition: session_types.h:242
vlib_node_t
Definition: node.h:247
transport_get_connection
static transport_connection_t * transport_get_connection(transport_proto_t tp, u32 conn_index, u8 thread_index)
Definition: transport.h:158
vlib_get_main
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:38
b
vlib_buffer_t ** b
Definition: nat44_ei_out2in.c:717
app_worker_session_fifo_tuning
int app_worker_session_fifo_tuning(app_worker_t *app_wrk, session_t *s, svm_fifo_t *f, session_ft_action_t act, u32 len)
Definition: application_worker.c:515
u8
unsigned char u8
Definition: types.h:56
ssvm_private_t::name
u8 * name
Definition: ssvm.h:87
clib_error_t
Definition: clib_error.h:21
vlib_buffer_get_current
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:257
app_worker_migrate_notify
int app_worker_migrate_notify(app_worker_t *app_wrk, session_t *s, session_handle_t new_sh)
Definition: application_worker.c:462
SESSION_CTRL_EVT_RESET
@ SESSION_CTRL_EVT_RESET
Definition: session_types.h:336
vlib_init_function_t
clib_error_t *() vlib_init_function_t(struct vlib_main_t *vm)
Definition: init.h:51
app_worker_transport_closed_notify
int app_worker_transport_closed_notify(app_worker_t *app_wrk, session_t *s)
Definition: application_worker.c:415
uword_to_pointer
#define uword_to_pointer(u, type)
Definition: types.h:136
application_enable_rx_mqs_nodes
void application_enable_rx_mqs_nodes(u8 is_en)
Definition: application.c:691
session_vpp_event_queues_allocate
void session_vpp_event_queues_allocate(session_main_t *smm)
Allocate event queues in the shared-memory segment.
Definition: session.c:1627
transport_get_half_open
static transport_connection_t * transport_get_half_open(transport_proto_t tp, u32 conn_index)
Definition: transport.h:171
session.h
ho_session_get
static session_t * ho_session_get(u32 ho_index)
Definition: session.h:677
session_lookup_add_connection
int session_lookup_add_connection(transport_connection_t *tc, u64 value)
Add transport connection to a session table.
Definition: session_lookup.c:229
clib_warning
#define clib_warning(format, args...)
Definition: error.h:59
HIGH_SEGMENT_BASEVA
#define HIGH_SEGMENT_BASEVA
Definition: svm_common.h:88
session_main_::local_endpoints_table_buckets
u32 local_endpoints_table_buckets
Definition: session.h:239
session_dgram_connect_notify
int session_dgram_connect_notify(transport_connection_t *tc, u32 old_thread_index, session_t **new_session)
Move dgram session to the right thread.
Definition: session.c:1008
session_open_srv_fns
static session_open_service_fn session_open_srv_fns[TRANSPORT_N_SERVICES]
Definition: session.c:1388
session_::flags
u32 flags
Session flags.
Definition: session_types.h:197
malloc_state
Definition: dlmalloc.c:1165
rv
int __clib_unused rv
Definition: application.c:491
transport_connection_attribute
int transport_connection_attribute(transport_proto_t tp, u32 conn_index, u8 thread_index, u8 is_get, transport_endpt_attr_t *attr)
Definition: transport.c:410
session_::ho_index
u32 ho_index
Index in app worker's half-open table if a half-open.
Definition: session_types.h:214
session_free_w_fifos
void session_free_w_fifos(session_t *s)
Definition: session.c:279
transport_proto
transport_proto
Definition: session.api:22
vlib_time_now
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:325
transport_get_listener
static transport_connection_t * transport_get_listener(transport_proto_t tp, u32 conn_index)
Definition: transport.h:165
app_worker_::app_index
u32 app_index
Index of owning app.
Definition: application.h:43
session_main_::poll_main
u8 poll_main
Poll session node in main thread.
Definition: session.h:211
session_main_
Definition: session.h:173
session_worker_::state
session_wrk_state_t state
Worker state.
Definition: session.h:116
proto
vl_api_ip_proto_t proto
Definition: acl_types.api:51
vlib_node_t::runtime_index
u32 runtime_index
Definition: node.h:272
fifo_segment_t::h
fifo_segment_header_t * h
fifo segment data
Definition: fifo_segment.h:70
svm_msg_q_ring_is_full
static u8 svm_msg_q_ring_is_full(svm_msg_q_t *mq, u32 ring_index)
Definition: message_queue.h:325
session_main_init
clib_error_t * session_main_init(vlib_main_t *vm)
Definition: session.c:1949
session_queue_node
vlib_node_registration_t session_queue_node
(constructor) VLIB_REGISTER_NODE (session_queue_node)
Definition: session_node.c:1826
session_half_open_free_rpc
static void session_half_open_free_rpc(void *args)
Definition: session.c:340
session_main_::configured_v4_session_table_memory
u32 configured_v4_session_table_memory
Definition: session.h:229
session_notify_subscribers
static int session_notify_subscribers(u32 app_index, session_t *s, svm_fifo_t *f, session_evt_type_t evt_type)
Definition: session.c:707
session_transport_reset_notify
void session_transport_reset_notify(transport_connection_t *tc)
Notify application that connection has been reset.
Definition: session.c:1187
PREDICT_TRUE
#define PREDICT_TRUE(x)
Definition: clib.h:125
vlib_get_thread_main
static vlib_thread_main_t * vlib_get_thread_main()
Definition: global_funcs.h:56
session_switch_pool
static void session_switch_pool(void *cb_args)
Notify old thread of the session pool switch.
Definition: session.c:965
vlib_buffer_t::total_length_not_including_first_buffer
u32 total_length_not_including_first_buffer
Only valid for first buffer in chain.
Definition: buffer.h:176
transport_half_close
void transport_half_close(transport_proto_t tp, u32 conn_index, u8 thread_index)
Definition: transport.c:321
SESSION_WRK_INTERRUPT
@ SESSION_WRK_INTERRUPT
Definition: session.h:78
session_transport_attribute
int session_transport_attribute(session_t *s, u8 is_get, transport_endpt_attr_t *attr)
Definition: session.c:1768
app_worker_accept_notify
int app_worker_accept_notify(app_worker_t *app_wrk, session_t *s)
Definition: application_worker.c:351
TRANSPORT_CONNECTION_F_DESCHED
@ TRANSPORT_CONNECTION_F_DESCHED
Connection descheduled by the session layer.
Definition: transport_types.h:56
VLIB_MAIN_LOOP_ENTER_FUNCTION
#define VLIB_MAIN_LOOP_ENTER_FUNCTION(x)
Definition: init.h:175
session_alloc
session_t * session_alloc(u32 thread_index)
Definition: session.c:201
session_cleanup_ntf_t
session_cleanup_ntf_t
Definition: session_types.h:113
session_send_io_evt_to_thread
int session_send_io_evt_to_thread(svm_fifo_t *f, session_evt_type_t evt_type)
Definition: session.c:84
session_::session_state
volatile u8 session_state
State in session layer state machine.
Definition: session_types.h:185
session_main_get_worker
static session_worker_t * session_main_get_worker(u32 thread_index)
Definition: session.h:702
segment_manager_detach_fifo
void segment_manager_detach_fifo(segment_manager_t *sm, svm_fifo_t **f)
Definition: segment_manager.c:853
session_::connection_index
u32 connection_index
Index of the transport connection associated to the session.
Definition: session_types.h:200
clib_mem_alloc
static void * clib_mem_alloc(uword size)
Definition: mem.h:253
session_wrk_enable_adaptive_mode
void session_wrk_enable_adaptive_mode(session_worker_t *wrk)
Definition: session_node.c:1860
session_is_valid
u8 session_is_valid(u32 si, u8 thread_index)
Definition: session.c:241
session_main_::configured_v4_halfopen_table_buckets
u32 configured_v4_halfopen_table_buckets
Definition: session.h:230
clib_llist_make_head
#define clib_llist_make_head(LP, name)
Initialize llist head.
Definition: llist.h:144
session_main_::evt_qs_segment_size
uword evt_qs_segment_size
Definition: session.h:225
session_switch_pool_reply
static void session_switch_pool_reply(void *arg)
Definition: session.c:940
UNFORMAT_END_OF_INPUT
#define UNFORMAT_END_OF_INPUT
Definition: format.h:137
vnet_session_enable_disable
clib_error_t * vnet_session_enable_disable(vlib_main_t *vm, u8 is_en)
Definition: session.c:1927
session_manager_main_disable
static void session_manager_main_disable(vlib_main_t *vm)
Definition: session.c:1879
session_worker_
Definition: session.h:87
segment_manager_attach_fifo
void segment_manager_attach_fifo(segment_manager_t *sm, svm_fifo_t **f, session_t *s)
Definition: segment_manager.c:863
session_add_self_custom_tx_evt
void session_add_self_custom_tx_evt(transport_connection_t *tc, u8 has_prio)
Definition: session.c:128
vlib_buffer_t::flags
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index,...
Definition: buffer.h:133
session_stream_accept_notify
int session_stream_accept_notify(transport_connection_t *tc)
Definition: session.c:1202
session_stream_connect_notify
int session_stream_connect_notify(transport_connection_t *tc, session_error_t err)
Definition: session.c:888
application.h
vlib_buffer_t
VLIB buffer representation.
Definition: buffer.h:111
session_send_rpc_evt_to_thread_force
void session_send_rpc_evt_to_thread_force(u32 thread_index, void *fp, void *rpc_args)
Definition: session.c:108
segment_manager_make_segment_handle
u64 segment_manager_make_segment_handle(u32 segment_manager_index, u32 segment_index)
Definition: segment_manager.c:268
session_worker_::ctrl_head
clib_llist_index_t ctrl_head
Head of control events list.
Definition: session.h:128
SESSION_EVT
#define SESSION_EVT(_evt, _args...)
Definition: session_debug.h:328
session_evt_alloc_old
static session_evt_elt_t * session_evt_alloc_old(session_worker_t *wrk)
Definition: session.h:318
svm_msg_q_unlock
static void svm_msg_q_unlock(svm_msg_q_t *mq)
Unlock message queue.
Definition: message_queue.h:392