FD.io VPP  v19.08.3-2-gbabecb413
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 is_fail = 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 (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  is_fail = 1;
118  }
119  else
120  {
122  }
123 
124  /* Alloc client session */
125  cct = ct_connection_get (sct->peer_index);
126 
127  cs = session_alloc (0);
128  ss = session_get (ss_index, 0);
129  cs->session_type = ss->session_type;
130  cs->connection_index = sct->c_c_index;
132  cs->session_state = SESSION_STATE_CONNECTING;
133  cs->app_wrk_index = client_wrk->wrk_index;
134  cs->connection_index = cct->c_c_index;
135 
136  cct->c_s_index = cs->session_index;
137  cct->client_rx_fifo = ss->tx_fifo;
138  cct->client_tx_fifo = ss->rx_fifo;
139 
140  cct->client_rx_fifo->refcnt++;
141  cct->client_tx_fifo->refcnt++;
142 
143  /* This will allocate fifos for the session. They won't be used for
144  * exchanging data but they will be used to close the connection if
145  * the segment manager/worker is freed */
146  if (app_worker_init_connected (client_wrk, cs))
147  {
148  session_close (ss);
149  return -1;
150  }
151 
152  if (app_worker_connect_notify (client_wrk, is_fail ? 0 : cs,
153  sct->client_opaque))
154  {
155  session_close (ss);
156  return -1;
157  }
158 
159  cs = session_get (cct->c_s_index, 0);
160  cs->session_state = SESSION_STATE_READY;
161 
162  return 0;
163 }
164 
165 static int
166 ct_init_local_session (app_worker_t * client_wrk, app_worker_t * server_wrk,
167  ct_connection_t * ct, session_t * ls, session_t * ll)
168 {
169  u32 round_rx_fifo_sz, round_tx_fifo_sz, sm_index, seg_size;
171  application_t *server;
172  segment_manager_t *sm;
173  u32 margin = 16 << 10;
174  fifo_segment_t *seg;
175  u64 segment_handle;
176  int seg_index, rv;
177 
178  server = application_get (server_wrk->app_index);
179 
181  round_rx_fifo_sz = 1 << max_log2 (props->rx_fifo_size);
182  round_tx_fifo_sz = 1 << max_log2 (props->tx_fifo_size);
183  seg_size = round_rx_fifo_sz + round_tx_fifo_sz + margin;
184 
185  sm = app_worker_get_listen_segment_manager (server_wrk, ll);
186  seg_index = segment_manager_add_segment (sm, seg_size);
187  if (seg_index < 0)
188  {
189  clib_warning ("failed to add new cut-through segment");
190  return seg_index;
191  }
192  seg = segment_manager_get_segment_w_lock (sm, seg_index);
193 
194  rv = segment_manager_try_alloc_fifos (seg, props->rx_fifo_size,
195  props->tx_fifo_size, &ls->rx_fifo,
196  &ls->tx_fifo);
197  if (rv)
198  {
199  clib_warning ("failed to add fifos in cut-through segment");
201  goto failed;
202  }
203 
204  sm_index = segment_manager_index (sm);
205  ls->rx_fifo->master_session_index = ls->session_index;
206  ls->tx_fifo->master_session_index = ls->session_index;
207  ls->rx_fifo->segment_manager = sm_index;
208  ls->tx_fifo->segment_manager = sm_index;
209  ls->rx_fifo->segment_index = seg_index;
210  ls->tx_fifo->segment_index = seg_index;
211 
212  segment_handle = segment_manager_segment_handle (sm, seg);
213  if ((rv = app_worker_add_segment_notify (server_wrk, segment_handle)))
214  {
215  clib_warning ("failed to notify server of new segment");
217  goto failed;
218  }
220  ct->segment_handle = segment_handle;
221 
222  return 0;
223 
224 failed:
225  segment_manager_del_segment (sm, seg);
226  return rv;
227 }
228 
229 static int
230 ct_connect (app_worker_t * client_wrk, session_t * ll,
232 {
233  u32 cct_index, ll_index, ll_ct_index;
234  ct_connection_t *sct, *cct, *ll_ct;
235  app_worker_t *server_wrk;
236  session_t *ss;
237 
238  ll_index = ll->session_index;
239  ll_ct_index = ll->connection_index;
240 
241  cct = ct_connection_alloc ();
242  cct_index = cct->c_c_index;
243  sct = ct_connection_alloc ();
244  ll_ct = ct_connection_get (ll_ct_index);
245 
246  /*
247  * Alloc and init client transport
248  */
249  cct = ct_connection_get (cct_index);
250  cct->c_thread_index = 0;
251  cct->c_rmt_port = sep->port;
252  cct->c_lcl_port = 0;
253  cct->c_is_ip4 = sep->is_ip4;
254  clib_memcpy (&cct->c_rmt_ip, &sep->ip, sizeof (sep->ip));
255  cct->actual_tp = ll_ct->actual_tp;
256  cct->is_client = 1;
257 
258  /*
259  * Init server transport
260  */
261  sct->c_thread_index = 0;
262  sct->c_rmt_port = 0;
263  sct->c_lcl_port = ll_ct->c_lcl_port;
264  sct->c_is_ip4 = sep->is_ip4;
265  clib_memcpy (&sct->c_lcl_ip, &ll_ct->c_lcl_ip, sizeof (ll_ct->c_lcl_ip));
266  sct->client_wrk = client_wrk->wrk_index;
267  sct->c_proto = TRANSPORT_PROTO_NONE;
268  sct->client_opaque = sep->opaque;
269  sct->actual_tp = ll_ct->actual_tp;
270 
271  sct->peer_index = cct->c_c_index;
272  cct->peer_index = sct->c_c_index;
273 
274  /*
275  * Accept server session. Client session is created only after
276  * server confirms accept.
277  */
278  ss = session_alloc (0);
279  ll = listen_session_get (ll_index);
280  ss->session_type = session_type_from_proto_and_ip (TRANSPORT_PROTO_NONE,
281  sct->c_is_ip4);
282  ss->connection_index = sct->c_c_index;
284  ss->session_state = SESSION_STATE_CREATED;
285 
286  server_wrk = application_listener_select_worker (ll);
287  ss->app_wrk_index = server_wrk->wrk_index;
288 
289  sct->c_s_index = ss->session_index;
290  sct->server_wrk = ss->app_wrk_index;
291 
292  if (ct_init_local_session (client_wrk, server_wrk, sct, ss, ll))
293  {
294  clib_warning ("failed");
295  ct_connection_free (sct);
296  session_free (ss);
297  return -1;
298  }
299 
300  ss->session_state = SESSION_STATE_ACCEPTING;
301  if (app_worker_accept_notify (server_wrk, ss))
302  {
303  clib_warning ("failed");
304  ct_connection_free (sct);
306  return -1;
307  }
308 
309  cct->segment_handle = sct->segment_handle;
310  ct_enable_disable_main_pre_input_node (1 /* is_add */ );
311  return 0;
312 }
313 
314 static u32
315 ct_start_listen (u32 app_listener_index, transport_endpoint_t * tep)
316 {
318  ct_connection_t *ct;
319 
320  sep = (session_endpoint_cfg_t *) tep;
321  ct = ct_connection_alloc ();
322  ct->server_wrk = sep->app_wrk_index;
323  ct->c_is_ip4 = sep->is_ip4;
324  clib_memcpy (&ct->c_lcl_ip, &sep->ip, sizeof (sep->ip));
325  ct->c_lcl_port = sep->port;
326  ct->actual_tp = sep->transport_proto;
327  ct_enable_disable_main_pre_input_node (1 /* is_add */ );
328  return ct->c_c_index;
329 }
330 
331 static u32
332 ct_stop_listen (u32 ct_index)
333 {
334  ct_connection_t *ct;
335  ct = ct_connection_get (ct_index);
336  ct_connection_free (ct);
337  ct_enable_disable_main_pre_input_node (0 /* is_add */ );
338  return 0;
339 }
340 
341 static transport_connection_t *
343 {
344  return (transport_connection_t *) ct_connection_get (ct_index);
345 }
346 
347 static int
349 {
350  session_endpoint_cfg_t *sep_ext;
351  session_endpoint_t *sep;
352  app_worker_t *app_wrk;
353  session_handle_t lh;
354  application_t *app;
355  app_listener_t *al;
356  u32 table_index;
357  session_t *ll;
358  u8 fib_proto;
359 
360  sep_ext = (session_endpoint_cfg_t *) tep;
361  sep = (session_endpoint_t *) tep;
362  app_wrk = app_worker_get (sep_ext->app_wrk_index);
363  app = application_get (app_wrk->app_index);
364 
365  sep->transport_proto = sep_ext->original_tp;
366  table_index = application_local_session_table (app);
367  lh = session_lookup_local_endpoint (table_index, sep);
368  if (lh == SESSION_DROP_HANDLE)
369  return VNET_API_ERROR_APP_CONNECT_FILTERED;
370 
371  if (lh == SESSION_INVALID_HANDLE)
372  goto global_scope;
373 
375  al = app_listener_get_w_session (ll);
376 
377  /*
378  * Break loop if rule in local table points to connecting app. This
379  * can happen if client is a generic proxy. Route connect through
380  * global table instead.
381  */
382  if (al->app_index == app->app_index)
383  goto global_scope;
384 
385  return ct_connect (app_wrk, ll, sep_ext);
386 
387  /*
388  * If nothing found, check the global scope for locally attached
389  * destinations. Make sure first that we're allowed to.
390  */
391 
392 global_scope:
393  if (session_endpoint_is_local (sep))
394  return VNET_API_ERROR_SESSION_CONNECT;
395 
396  if (!application_has_global_scope (app))
397  return VNET_API_ERROR_APP_CONNECT_SCOPE;
398 
399  fib_proto = session_endpoint_fib_proto (sep);
400  table_index = application_session_table (app, fib_proto);
401  ll = session_lookup_listener_wildcard (table_index, sep);
402 
403  if (ll)
404  return ct_connect (app_wrk, ll, sep_ext);
405 
406  /* Failed to connect but no error */
407  return 1;
408 }
409 
410 static void
411 ct_session_close (u32 ct_index, u32 thread_index)
412 {
413  ct_connection_t *ct, *peer_ct;
414  app_worker_t *app_wrk;
415  session_t *s;
416 
417  ct = ct_connection_get (ct_index);
418  peer_ct = ct_connection_get (ct->peer_index);
419  if (peer_ct)
420  {
421  peer_ct->peer_index = ~0;
423  }
424 
425  s = session_get (ct->c_s_index, 0);
426  app_wrk = app_worker_get_if_valid (s->app_wrk_index);
427  if (app_wrk)
430  if (ct->is_client)
432 
433  ct_connection_free (ct);
434  ct_enable_disable_main_pre_input_node (0 /* is_add */ );
435 }
436 
437 static transport_connection_t *
438 ct_session_get (u32 ct_index, u32 thread_index)
439 {
440  return (transport_connection_t *) ct_connection_get (ct_index);
441 }
442 
443 static u8 *
444 format_ct_connection_id (u8 * s, va_list * args)
445 {
446  ct_connection_t *ct = va_arg (*args, ct_connection_t *);
447  if (!ct)
448  return s;
449  if (ct->c_is_ip4)
450  {
451  s = format (s, "[%d:%d][CT:%U] %U:%d->%U:%d", ct->c_thread_index,
452  ct->c_s_index, format_transport_proto_short, ct->actual_tp,
453  format_ip4_address, &ct->c_lcl_ip4,
454  clib_net_to_host_u16 (ct->c_lcl_port), format_ip4_address,
455  &ct->c_rmt_ip4, clib_net_to_host_u16 (ct->c_rmt_port));
456  }
457  else
458  {
459  s = format (s, "[%d:%d][CT:%U] %U:%d->%U:%d", ct->c_thread_index,
460  ct->c_s_index, format_transport_proto_short, ct->actual_tp,
461  format_ip6_address, &ct->c_lcl_ip6,
462  clib_net_to_host_u16 (ct->c_lcl_port), format_ip6_address,
463  &ct->c_rmt_ip6, clib_net_to_host_u16 (ct->c_rmt_port));
464  }
465 
466  return s;
467 }
468 
469 static int
470 ct_custom_tx (void *session, u32 max_burst_size)
471 {
472  session_t *s = (session_t *) session;
473  if (session_has_transport (s))
474  return 0;
475  return ct_session_tx (s);
476 }
477 
478 static int
480 {
481  ct_connection_t *ct = (ct_connection_t *) tc, *peer_ct;
482  session_t *ps;
483 
484  peer_ct = ct_connection_get (ct->peer_index);
485  if (!peer_ct)
486  return -1;
487  ps = session_get (peer_ct->c_s_index, peer_ct->c_thread_index);
488  return session_dequeue_notify (ps);
489 }
490 
491 static u8 *
492 format_ct_listener (u8 * s, va_list * args)
493 {
494  u32 tc_index = va_arg (*args, u32);
495  u32 __clib_unused thread_index = va_arg (*args, u32);
496  u32 __clib_unused verbose = va_arg (*args, u32);
497  ct_connection_t *ct = ct_connection_get (tc_index);
498  s = format (s, "%-50U", format_ct_connection_id, ct);
499  if (verbose)
500  s = format (s, "%-15s", "LISTEN");
501  return s;
502 }
503 
504 static u8 *
505 format_ct_connection (u8 * s, va_list * args)
506 {
507  ct_connection_t *ct = va_arg (*args, ct_connection_t *);
508  u32 verbose = va_arg (*args, u32);
509 
510  if (!ct)
511  return s;
512  s = format (s, "%-50U", format_ct_connection_id, ct);
513  if (verbose)
514  {
515  s = format (s, "%-15s", "ESTABLISHED");
516  if (verbose > 1)
517  {
518  s = format (s, "\n");
519  }
520  }
521  return s;
522 }
523 
524 static u8 *
525 format_ct_session (u8 * s, va_list * args)
526 {
527  u32 ct_index = va_arg (*args, u32);
528  u32 __clib_unused thread_index = va_arg (*args, u32);
529  u32 verbose = va_arg (*args, u32);
530  ct_connection_t *ct;
531 
532  ct = ct_connection_get (ct_index);
533  if (!ct)
534  {
535  s = format (s, "empty\n");
536  return s;
537  }
538 
539  s = format (s, "%U", format_ct_connection, ct, verbose);
540  return s;
541 }
542 
543 /* *INDENT-OFF* */
545  .start_listen = ct_start_listen,
546  .stop_listen = ct_stop_listen,
547  .get_listener = ct_listener_get,
548  .connect = ct_session_connect,
549  .close = ct_session_close,
550  .get_connection = ct_session_get,
551  .custom_tx = ct_custom_tx,
552  .app_rx_evt = ct_app_rx_evt,
553  .format_listener = format_ct_listener,
554  .format_connection = format_ct_session,
555  .transport_options = {
556  .tx_type = TRANSPORT_TX_INTERNAL,
557  .service_type = TRANSPORT_SERVICE_APP,
558  },
559 };
560 /* *INDENT-ON* */
561 
562 int
564 {
565  ct_connection_t *ct, *peer_ct;
566  session_t *peer_s;
567 
569  peer_ct = ct_connection_get (ct->peer_index);
570  if (!peer_ct)
571  return -1;
572  peer_s = session_get (peer_ct->c_s_index, 0);
573  if (peer_s->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
574  return 0;
575  return session_enqueue_notify (peer_s);
576 }
577 
578 static clib_error_t *
580 {
581  transport_register_protocol (TRANSPORT_PROTO_NONE, &cut_thru_proto,
582  FIB_PROTOCOL_IP4, ~0);
583  transport_register_protocol (TRANSPORT_PROTO_NONE, &cut_thru_proto,
584  FIB_PROTOCOL_IP6, ~0);
585  return 0;
586 }
587 
589 
590 /*
591  * fd.io coding-style-patch-verification: ON
592  *
593  * Local Variables:
594  * eval: (c-set-style "gnu")
595  * End:
596  */
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.
static int ct_connect(app_worker_t *client_wrk, session_t *ll, session_endpoint_cfg_t *sep)
svm_fifo_t * tx_fifo
u8 application_has_global_scope(application_t *app)
Definition: application.c:1147
#define pool_get_zero(P, E)
Allocate an object E from a pool P and zero it.
Definition: pool.h:239
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:1468
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
static session_t * listen_session_get_from_handle(session_handle_t handle)
Definition: session.h:546
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:95
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:295
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:1293
#define clib_memcpy(d, s, n)
Definition: string.h:180
int segment_manager_try_alloc_fifos(fifo_segment_t *fifo_segment, u32 rx_fifo_size, u32 tx_fifo_size, svm_fifo_t **rx_fifo, svm_fifo_t **tx_fifo)
u32 app_index
owning app index
Definition: application.h:78
void session_transport_closing_notify(transport_connection_t *tc)
Notification from transport that connection is being closed.
Definition: session.c:865
format_function_t format_ip4_address
Definition: format.h:75
void session_free_w_fifos(session_t *s)
Definition: session.c:247
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:634
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:514
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:286
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)
u32 application_session_table(application_t *app, u8 fib_proto)
Definition: application.c:324
int segment_manager_add_segment(segment_manager_t *sm, u32 segment_size)
Adds segment to segment manager&#39;s pool.
static u64 listen_session_get_handle(session_t *s)
Definition: session.h:538
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:339
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:93
vlib_main_t * vm
Definition: buffer.c:323
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:196
#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:283
transport_proto_t actual_tp
application_t * application_get(u32 app_index)
Definition: application.c:418
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:239
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:666
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 int ct_custom_tx(void *session, u32 max_burst_size)
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
int app_worker_del_segment_notify(app_worker_t *app_wrk, u64 segment_handle)
session_t * session_alloc(u32 thread_index)
Definition: session.c:170
u32 app_index
App index in app pool.
Definition: application.h:89
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:596
static uword max_log2(uword x)
Definition: clib.h:192
void session_close(session_t *s)
Initialize session closing procedure.
Definition: session.c:1223
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
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:372
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)
int app_worker_connect_notify(app_worker_t *app_wrk, session_t *s, u32 opaque)
static session_t * listen_session_get(u32 ls_index)
Definition: session.h:569
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