FD.io VPP  v20.05.1-6-gf53edbc3b
Vector Packet Processing
application_local.c
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1 /*
2  * Copyright (c) 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 
17 #include <vnet/session/session.h>
18 
20 
21 static void
23 {
24  u32 n_conns;
25 
26  if (!vlib_num_workers ())
27  return;
28 
29  n_conns = pool_elts (connections);
30  if (n_conns > 2)
31  return;
32 
33  if (n_conns > 0 && is_add)
36  VLIB_NODE_STATE_POLLING);
37  else if (n_conns == 0)
40  VLIB_NODE_STATE_DISABLED);
41 }
42 
43 static ct_connection_t *
45 {
46  ct_connection_t *ct;
47 
48  pool_get_zero (connections, ct);
49  ct->c_c_index = ct - connections;
50  ct->c_thread_index = 0;
51  ct->client_wrk = ~0;
52  ct->server_wrk = ~0;
53  return ct;
54 }
55 
56 static ct_connection_t *
58 {
59  if (pool_is_free_index (connections, ct_index))
60  return 0;
61  return pool_elt_at_index (connections, ct_index);
62 }
63 
64 static void
66 {
67  if (CLIB_DEBUG)
68  memset (ct, 0xfc, sizeof (*ct));
69  pool_put (connections, ct);
70 }
71 
72 session_t *
74 {
75  ct_connection_t *ct, *peer_ct;
77  peer_ct = ct_connection_get (ct->peer_index);
78  return session_get (peer_ct->c_s_index, 0);
79 }
80 
81 void
83 {
84  ct_connection_t *ct;
86  sep->transport_proto = ct->actual_tp;
87  sep->port = ct->c_lcl_port;
88  sep->is_ip4 = ct->c_is_ip4;
89 }
90 
91 int
93 {
94  ct_connection_t *sct, *cct;
95  app_worker_t *client_wrk;
97  fifo_segment_t *seg;
98  u64 segment_handle;
99  int err = 0;
100  session_t *cs;
101  u32 ss_index;
102 
103  ss_index = ss->session_index;
104  sct = (ct_connection_t *) session_get_transport (ss);
105  client_wrk = app_worker_get (sct->client_wrk);
106 
107  sm = segment_manager_get (ss->rx_fifo->segment_manager);
108  seg = segment_manager_get_segment_w_lock (sm, ss->rx_fifo->segment_index);
109  segment_handle = segment_manager_segment_handle (sm, seg);
110 
111  if ((err = app_worker_add_segment_notify (client_wrk, segment_handle)))
112  {
113  clib_warning ("failed to notify client %u of new segment",
114  sct->client_wrk);
116  session_close (ss);
117  }
118  else
119  {
121  }
122 
123  /* Alloc client session */
124  cct = ct_connection_get (sct->peer_index);
125 
126  cs = session_alloc (0);
127  ss = session_get (ss_index, 0);
128  cs->session_type = ss->session_type;
129  cs->connection_index = sct->c_c_index;
131  cs->session_state = SESSION_STATE_CONNECTING;
132  cs->app_wrk_index = client_wrk->wrk_index;
133  cs->connection_index = cct->c_c_index;
134 
135  cct->c_s_index = cs->session_index;
136  cct->client_rx_fifo = ss->tx_fifo;
137  cct->client_tx_fifo = ss->rx_fifo;
138 
139  cct->client_rx_fifo->refcnt++;
140  cct->client_tx_fifo->refcnt++;
141 
142  /* This will allocate fifos for the session. They won't be used for
143  * exchanging data but they will be used to close the connection if
144  * the segment manager/worker is freed */
145  if (app_worker_init_connected (client_wrk, cs))
146  {
147  session_close (ss);
148  return -1;
149  }
150 
151  if (app_worker_connect_notify (client_wrk, cs, err, sct->client_opaque))
152  {
153  session_close (ss);
154  return -1;
155  }
156 
157  cs = session_get (cct->c_s_index, 0);
158  cs->session_state = SESSION_STATE_READY;
159 
160  return 0;
161 }
162 
163 static int
164 ct_init_local_session (app_worker_t * client_wrk, app_worker_t * server_wrk,
165  ct_connection_t * ct, session_t * ls, session_t * ll)
166 {
167  u32 round_rx_fifo_sz, round_tx_fifo_sz, sm_index, seg_size;
169  application_t *server;
170  segment_manager_t *sm;
171  u32 margin = 16 << 10;
172  fifo_segment_t *seg;
173  u64 segment_handle;
174  int seg_index, rv;
175 
176  server = application_get (server_wrk->app_index);
177 
179  round_rx_fifo_sz = 1 << max_log2 (props->rx_fifo_size);
180  round_tx_fifo_sz = 1 << max_log2 (props->tx_fifo_size);
181  /* Increase size because of inefficient chunk allocations. Depending on
182  * how data is consumed, it may happen that more chunks than needed are
183  * allocated.
184  * TODO should remove once allocations are done more efficiently */
185  seg_size = 4 * (round_rx_fifo_sz + round_tx_fifo_sz + margin);
186 
187  sm = app_worker_get_listen_segment_manager (server_wrk, ll);
188  seg_index = segment_manager_add_segment (sm, seg_size);
189  if (seg_index < 0)
190  {
191  clib_warning ("failed to add new cut-through segment");
192  return seg_index;
193  }
194  seg = segment_manager_get_segment_w_lock (sm, seg_index);
195 
197  props->rx_fifo_size,
198  props->tx_fifo_size, &ls->rx_fifo,
199  &ls->tx_fifo);
200  if (rv)
201  {
202  clib_warning ("failed to add fifos in cut-through segment");
204  goto failed;
205  }
206 
207  sm_index = segment_manager_index (sm);
208  ls->rx_fifo->master_session_index = ls->session_index;
209  ls->tx_fifo->master_session_index = ls->session_index;
210  ls->rx_fifo->segment_manager = sm_index;
211  ls->tx_fifo->segment_manager = sm_index;
212  ls->rx_fifo->segment_index = seg_index;
213  ls->tx_fifo->segment_index = seg_index;
214 
215  segment_handle = segment_manager_segment_handle (sm, seg);
216  if ((rv = app_worker_add_segment_notify (server_wrk, segment_handle)))
217  {
218  clib_warning ("failed to notify server of new segment");
220  goto failed;
221  }
223  ct->segment_handle = segment_handle;
224 
225  return 0;
226 
227 failed:
228  segment_manager_del_segment (sm, seg);
229  return rv;
230 }
231 
232 static int
233 ct_connect (app_worker_t * client_wrk, session_t * ll,
235 {
236  u32 cct_index, ll_index, ll_ct_index;
237  ct_connection_t *sct, *cct, *ll_ct;
238  app_worker_t *server_wrk;
239  session_t *ss;
240 
241  ll_index = ll->session_index;
242  ll_ct_index = ll->connection_index;
243 
244  cct = ct_connection_alloc ();
245  cct_index = cct->c_c_index;
246  sct = ct_connection_alloc ();
247  ll_ct = ct_connection_get (ll_ct_index);
248 
249  /*
250  * Alloc and init client transport
251  */
252  cct = ct_connection_get (cct_index);
253  cct->c_thread_index = 0;
254  cct->c_rmt_port = sep->port;
255  cct->c_lcl_port = 0;
256  cct->c_is_ip4 = sep->is_ip4;
257  clib_memcpy (&cct->c_rmt_ip, &sep->ip, sizeof (sep->ip));
258  cct->actual_tp = ll_ct->actual_tp;
259  cct->is_client = 1;
260 
261  /*
262  * Init server transport
263  */
264  sct->c_thread_index = 0;
265  sct->c_rmt_port = 0;
266  sct->c_lcl_port = ll_ct->c_lcl_port;
267  sct->c_is_ip4 = sep->is_ip4;
268  clib_memcpy (&sct->c_lcl_ip, &ll_ct->c_lcl_ip, sizeof (ll_ct->c_lcl_ip));
269  sct->client_wrk = client_wrk->wrk_index;
270  sct->c_proto = TRANSPORT_PROTO_NONE;
271  sct->client_opaque = sep->opaque;
272  sct->actual_tp = ll_ct->actual_tp;
273 
274  sct->peer_index = cct->c_c_index;
275  cct->peer_index = sct->c_c_index;
276 
277  /*
278  * Accept server session. Client session is created only after
279  * server confirms accept.
280  */
281  ss = session_alloc (0);
282  ll = listen_session_get (ll_index);
283  ss->session_type = session_type_from_proto_and_ip (TRANSPORT_PROTO_NONE,
284  sct->c_is_ip4);
285  ss->connection_index = sct->c_c_index;
287  ss->session_state = SESSION_STATE_CREATED;
288 
289  server_wrk = application_listener_select_worker (ll);
290  ss->app_wrk_index = server_wrk->wrk_index;
291 
292  sct->c_s_index = ss->session_index;
293  sct->server_wrk = ss->app_wrk_index;
294 
295  if (ct_init_local_session (client_wrk, server_wrk, sct, ss, ll))
296  {
297  ct_connection_free (sct);
298  session_free (ss);
299  return -1;
300  }
301 
302  ss->session_state = SESSION_STATE_ACCEPTING;
303  if (app_worker_accept_notify (server_wrk, ss))
304  {
305  ct_connection_free (sct);
307  session_free (ss);
308  return -1;
309  }
310 
311  cct->segment_handle = sct->segment_handle;
312  ct_enable_disable_main_pre_input_node (1 /* is_add */ );
313  return 0;
314 }
315 
316 static u32
317 ct_start_listen (u32 app_listener_index, transport_endpoint_t * tep)
318 {
320  ct_connection_t *ct;
321 
322  sep = (session_endpoint_cfg_t *) tep;
323  ct = ct_connection_alloc ();
324  ct->server_wrk = sep->app_wrk_index;
325  ct->c_is_ip4 = sep->is_ip4;
326  clib_memcpy (&ct->c_lcl_ip, &sep->ip, sizeof (sep->ip));
327  ct->c_lcl_port = sep->port;
328  ct->actual_tp = sep->transport_proto;
329  ct_enable_disable_main_pre_input_node (1 /* is_add */ );
330  return ct->c_c_index;
331 }
332 
333 static u32
334 ct_stop_listen (u32 ct_index)
335 {
336  ct_connection_t *ct;
337  ct = ct_connection_get (ct_index);
338  ct_connection_free (ct);
339  ct_enable_disable_main_pre_input_node (0 /* is_add */ );
340  return 0;
341 }
342 
343 static transport_connection_t *
345 {
346  return (transport_connection_t *) ct_connection_get (ct_index);
347 }
348 
349 static int
351 {
352  session_endpoint_cfg_t *sep_ext;
353  session_endpoint_t *sep;
354  app_worker_t *app_wrk;
355  session_handle_t lh;
356  application_t *app;
357  app_listener_t *al;
358  u32 table_index;
359  session_t *ll;
360  u8 fib_proto;
361 
362  sep_ext = (session_endpoint_cfg_t *) tep;
363  sep = (session_endpoint_t *) tep;
364  app_wrk = app_worker_get (sep_ext->app_wrk_index);
365  app = application_get (app_wrk->app_index);
366 
367  sep->transport_proto = sep_ext->original_tp;
368  table_index = application_local_session_table (app);
369  lh = session_lookup_local_endpoint (table_index, sep);
370  if (lh == SESSION_DROP_HANDLE)
371  return SESSION_E_FILTERED;
372 
373  if (lh == SESSION_INVALID_HANDLE)
374  goto global_scope;
375 
377  al = app_listener_get_w_session (ll);
378 
379  /*
380  * Break loop if rule in local table points to connecting app. This
381  * can happen if client is a generic proxy. Route connect through
382  * global table instead.
383  */
384  if (al->app_index == app->app_index)
385  goto global_scope;
386 
387  return ct_connect (app_wrk, ll, sep_ext);
388 
389  /*
390  * If nothing found, check the global scope for locally attached
391  * destinations. Make sure first that we're allowed to.
392  */
393 
394 global_scope:
395  if (session_endpoint_is_local (sep))
396  return SESSION_E_NOROUTE;
397 
398  if (!application_has_global_scope (app))
399  return SESSION_E_SCOPE;
400 
401  fib_proto = session_endpoint_fib_proto (sep);
402  table_index = session_lookup_get_index_for_fib (fib_proto, sep->fib_index);
403  ll = session_lookup_listener_wildcard (table_index, sep);
404 
405  if (ll)
406  return ct_connect (app_wrk, ll, sep_ext);
407 
408  /* Failed to connect but no error */
409  return 1;
410 }
411 
412 static void
413 ct_session_close (u32 ct_index, u32 thread_index)
414 {
415  ct_connection_t *ct, *peer_ct;
416  app_worker_t *app_wrk;
417  session_t *s;
418 
419  ct = ct_connection_get (ct_index);
420  peer_ct = ct_connection_get (ct->peer_index);
421  if (peer_ct)
422  {
423  peer_ct->peer_index = ~0;
425  }
426 
427  s = session_get (ct->c_s_index, 0);
428  app_wrk = app_worker_get_if_valid (s->app_wrk_index);
429  if (app_wrk)
432  if (ct->is_client)
434 
435  ct_connection_free (ct);
436  ct_enable_disable_main_pre_input_node (0 /* is_add */ );
437 }
438 
439 static transport_connection_t *
440 ct_session_get (u32 ct_index, u32 thread_index)
441 {
442  return (transport_connection_t *) ct_connection_get (ct_index);
443 }
444 
445 static u8 *
446 format_ct_connection_id (u8 * s, va_list * args)
447 {
448  ct_connection_t *ct = va_arg (*args, ct_connection_t *);
449  if (!ct)
450  return s;
451  if (ct->c_is_ip4)
452  {
453  s = format (s, "[%d:%d][CT:%U] %U:%d->%U:%d", ct->c_thread_index,
454  ct->c_s_index, format_transport_proto_short, ct->actual_tp,
455  format_ip4_address, &ct->c_lcl_ip4,
456  clib_net_to_host_u16 (ct->c_lcl_port), format_ip4_address,
457  &ct->c_rmt_ip4, clib_net_to_host_u16 (ct->c_rmt_port));
458  }
459  else
460  {
461  s = format (s, "[%d:%d][CT:%U] %U:%d->%U:%d", ct->c_thread_index,
462  ct->c_s_index, format_transport_proto_short, ct->actual_tp,
463  format_ip6_address, &ct->c_lcl_ip6,
464  clib_net_to_host_u16 (ct->c_lcl_port), format_ip6_address,
465  &ct->c_rmt_ip6, clib_net_to_host_u16 (ct->c_rmt_port));
466  }
467 
468  return s;
469 }
470 
471 static int
473 {
474  session_t *s = (session_t *) session;
475  if (session_has_transport (s))
476  return 0;
477  return ct_session_tx (s);
478 }
479 
480 static int
482 {
483  ct_connection_t *ct = (ct_connection_t *) tc, *peer_ct;
484  session_t *ps;
485 
486  peer_ct = ct_connection_get (ct->peer_index);
487  if (!peer_ct)
488  return -1;
489  ps = session_get (peer_ct->c_s_index, peer_ct->c_thread_index);
490  return session_dequeue_notify (ps);
491 }
492 
493 static u8 *
494 format_ct_listener (u8 * s, va_list * args)
495 {
496  u32 tc_index = va_arg (*args, u32);
497  u32 __clib_unused thread_index = va_arg (*args, u32);
498  u32 __clib_unused verbose = va_arg (*args, u32);
499  ct_connection_t *ct = ct_connection_get (tc_index);
500  s = format (s, "%-50U", format_ct_connection_id, ct);
501  if (verbose)
502  s = format (s, "%-15s", "LISTEN");
503  return s;
504 }
505 
506 static u8 *
507 format_ct_connection (u8 * s, va_list * args)
508 {
509  ct_connection_t *ct = va_arg (*args, ct_connection_t *);
510  u32 verbose = va_arg (*args, u32);
511 
512  if (!ct)
513  return s;
514  s = format (s, "%-50U", format_ct_connection_id, ct);
515  if (verbose)
516  {
517  s = format (s, "%-15s", "ESTABLISHED");
518  if (verbose > 1)
519  {
520  s = format (s, "\n");
521  }
522  }
523  return s;
524 }
525 
526 static u8 *
527 format_ct_session (u8 * s, va_list * args)
528 {
529  u32 ct_index = va_arg (*args, u32);
530  u32 __clib_unused thread_index = va_arg (*args, u32);
531  u32 verbose = va_arg (*args, u32);
532  ct_connection_t *ct;
533 
534  ct = ct_connection_get (ct_index);
535  if (!ct)
536  {
537  s = format (s, "empty\n");
538  return s;
539  }
540 
541  s = format (s, "%U", format_ct_connection, ct, verbose);
542  return s;
543 }
544 
545 /* *INDENT-OFF* */
547  .start_listen = ct_start_listen,
548  .stop_listen = ct_stop_listen,
549  .get_listener = ct_listener_get,
550  .connect = ct_session_connect,
551  .close = ct_session_close,
552  .get_connection = ct_session_get,
553  .custom_tx = ct_custom_tx,
554  .app_rx_evt = ct_app_rx_evt,
555  .format_listener = format_ct_listener,
556  .format_connection = format_ct_session,
557  .transport_options = {
558  .name = "ct",
559  .short_name = "C",
560  .tx_type = TRANSPORT_TX_INTERNAL,
561  .service_type = TRANSPORT_SERVICE_APP,
562  },
563 };
564 /* *INDENT-ON* */
565 
566 int
568 {
569  ct_connection_t *ct, *peer_ct;
570  session_t *peer_s;
571 
573  peer_ct = ct_connection_get (ct->peer_index);
574  if (!peer_ct)
575  return -1;
576  peer_s = session_get (peer_ct->c_s_index, 0);
577  if (peer_s->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
578  return 0;
579  return session_enqueue_notify (peer_s);
580 }
581 
582 static clib_error_t *
584 {
585  transport_register_protocol (TRANSPORT_PROTO_NONE, &cut_thru_proto,
586  FIB_PROTOCOL_IP4, ~0);
587  transport_register_protocol (TRANSPORT_PROTO_NONE, &cut_thru_proto,
588  FIB_PROTOCOL_IP6, ~0);
589  return 0;
590 }
591 
593 
594 /*
595  * fd.io coding-style-patch-verification: ON
596  *
597  * Local Variables:
598  * eval: (c-set-style "gnu")
599  * End:
600  */
static u32 ct_stop_listen(u32 ct_index)
u32 segment_manager_index(segment_manager_t *sm)
#define SESSION_DROP_HANDLE
Definition: session_table.h:58
u32 connection_index
Index of the transport connection associated to the session.
void segment_manager_segment_reader_unlock(segment_manager_t *sm)
u64 segment_manager_segment_handle(segment_manager_t *sm, fifo_segment_t *segment)
int ct_session_tx(session_t *s)
u8 * format_transport_proto_short(u8 *s, va_list *args)
Definition: transport.c:65
session_type_t session_type
Type built from transport and network protocol types.
int segment_manager_add_segment(segment_manager_t *sm, uword segment_size)
Adds segment to segment manager&#39;s pool.
static int ct_connect(app_worker_t *client_wrk, session_t *ll, session_endpoint_cfg_t *sep)
svm_fifo_t * tx_fifo
int app_worker_connect_notify(app_worker_t *app_wrk, session_t *s, session_error_t err, u32 opaque)
u8 application_has_global_scope(application_t *app)
Definition: application.c:1166
#define pool_get_zero(P, E)
Allocate an object E from a pool P and zero it.
Definition: pool.h:255
static void ct_session_close(u32 ct_index, u32 thread_index)
static int ct_app_rx_evt(transport_connection_t *tc)
u32 session_index
Index in thread pool where session was allocated.
unsigned long u64
Definition: types.h:89
transport_connection_t * session_get_transport(session_t *s)
Definition: session.c:1617
svm_fifo_t * rx_fifo
Pointers to rx/tx buffers.
app_listener_t * app_listener_get_w_session(session_t *ls)
Definition: application.c:67
u32 session_lookup_get_index_for_fib(u32 fib_proto, u32 fib_index)
static session_t * listen_session_get_from_handle(session_handle_t handle)
Definition: session.h:571
session_t * session_lookup_listener_wildcard(u32 table_index, session_endpoint_t *sep)
Lookup listener wildcard match.
static u8 * format_ct_session(u8 *s, va_list *args)
static u8 session_endpoint_fib_proto(session_endpoint_t *sep)
Definition: session_types.h:99
int app_worker_add_segment_notify(app_worker_t *app_wrk, u64 segment_handle)
Send an API message to the external app, to map new segment.
static session_t * session_get(u32 si, u32 thread_index)
Definition: session.h:301
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
static int ct_session_connect(transport_endpoint_cfg_t *tep)
static ct_connection_t * ct_connection_alloc(void)
segment_manager_t * app_worker_get_listen_segment_manager(app_worker_t *, session_t *)
unsigned char u8
Definition: types.h:56
segment_manager_props_t * application_segment_manager_properties(application_t *app)
Definition: application.c:1312
#define clib_memcpy(d, s, n)
Definition: string.h:180
u32 app_index
owning app index
Definition: application.h:81
void session_transport_closing_notify(transport_connection_t *tc)
Notification from transport that connection is being closed.
Definition: session.c:945
format_function_t format_ip4_address
Definition: format.h:73
void session_free_w_fifos(session_t *s)
Definition: session.c:261
vlib_node_registration_t session_queue_pre_input_node
(constructor) VLIB_REGISTER_NODE (session_queue_pre_input_node)
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:173
void segment_manager_dealloc_fifos(svm_fifo_t *rx_fifo, svm_fifo_t *tx_fifo)
static void ct_enable_disable_main_pre_input_node(u8 is_add)
static transport_connection_t * ct_session_get(u32 ct_index, u32 thread_index)
unsigned int u32
Definition: types.h:88
static ct_connection_t * connections
#define SESSION_INVALID_HANDLE
Definition: session_types.h:23
static ct_connection_t * ct_connection_get(u32 ct_index)
struct _transport_proto_vft transport_proto_vft_t
int session_dequeue_notify(session_t *s)
Definition: session.c:685
struct _session_endpoint_cfg session_endpoint_cfg_t
svm_fifo_t * client_rx_fifo
static session_type_t session_type_from_proto_and_ip(transport_proto_t proto, u8 is_ip4)
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:534
int app_worker_accept_notify(app_worker_t *app_wrk, session_t *s)
void segment_manager_del_segment(segment_manager_t *sm, fifo_segment_t *fs)
Remove segment without lock.
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:302
struct _segment_manager_props segment_manager_props_t
u32 wrk_index
Worker index in global worker pool.
Definition: application.h:37
app_worker_t * app_worker_get_if_valid(u32 wrk_index)
vlib_main_t * vm
Definition: in2out_ed.c:1599
static u64 listen_session_get_handle(session_t *s)
Definition: session.h:563
u64 session_lookup_local_endpoint(u32 table_index, session_endpoint_t *sep)
Look up endpoint in local session table.
u32 application_local_session_table(application_t *app)
Definition: application.c:347
app transport service
static transport_connection_t * ct_listener_get(u32 ct_index)
session_handle_t listener_handle
Parent listener session index if the result of an accept.
format_function_t format_ip6_address
Definition: format.h:91
static u8 * format_ct_listener(u8 *s, va_list *args)
static u8 * format_ct_connection(u8 *s, va_list *args)
void session_free(session_t *s)
Definition: session.c:210
#define clib_warning(format, args...)
Definition: error.h:59
struct _transport_connection transport_connection_t
int app_worker_init_connected(app_worker_t *app_wrk, session_t *s)
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:299
transport_proto_t actual_tp
application_t * application_get(u32 app_index)
Definition: application.c:426
void transport_register_protocol(transport_proto_t transport_proto, const transport_proto_vft_t *vft, fib_protocol_t fib_proto, u32 output_node)
Register transport virtual function table.
Definition: transport.c:246
apps acting as transports
static const transport_proto_vft_t cut_thru_proto
transport_connection_t connection
int ct_session_connect_notify(session_t *ss)
session_t * ct_session_get_peer(session_t *s)
app_worker_t * application_listener_select_worker(session_t *ls)
Definition: application.c:685
fifo_segment_t * segment_manager_get_segment_w_lock(segment_manager_t *sm, u32 segment_index)
Reads a segment from the segment manager&#39;s pool and acquires reader lock.
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:148
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
u8 thread_index
Index of the thread that allocated the session.
int app_worker_del_segment_notify(app_worker_t *app_wrk, u64 segment_handle)
session_t * session_alloc(u32 thread_index)
Definition: session.c:184
u32 app_index
App index in app pool.
Definition: application.h:92
app_worker_t * app_worker_get(u32 wrk_index)
u64 session_handle_t
volatile u8 session_state
State in session layer state machine.
int session_enqueue_notify(session_t *s)
Definition: session.c:647
static uword max_log2(uword x)
Definition: clib.h:206
void session_close(session_t *s)
Initialize session closing procedure.
Definition: session.c:1360
svm_fifo_t * client_tx_fifo
struct _segment_manager segment_manager_t
static u32 ct_start_listen(u32 app_listener_index, transport_endpoint_t *tep)
segment_manager_t * segment_manager_get(u32 index)
static u8 session_has_transport(session_t *s)
u32 app_index
Index of owning app.
Definition: application.h:43
int segment_manager_try_alloc_fifos(fifo_segment_t *fifo_segment, u32 thread_index, u32 rx_fifo_size, u32 tx_fifo_size, svm_fifo_t **rx_fifo, svm_fifo_t **tx_fifo)
static int ct_init_local_session(app_worker_t *client_wrk, app_worker_t *server_wrk, ct_connection_t *ct, session_t *ls, session_t *ll)
static u32 vlib_num_workers()
Definition: threads.h:376
static int ct_custom_tx(void *session, transport_send_params_t *sp)
u32 app_wrk_index
Index of the app worker that owns the session.
static u8 session_endpoint_is_local(session_endpoint_t *sep)
static void ct_connection_free(ct_connection_t *ct)
static u8 * format_ct_connection_id(u8 *s, va_list *args)
struct _session_endpoint session_endpoint_t
static clib_error_t * ct_transport_init(vlib_main_t *vm)
static session_t * listen_session_get(u32 ls_index)
Definition: session.h:594
void ct_session_endpoint(session_t *ll, session_endpoint_t *sep)
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128