2 * Copyright (c) 2017-2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #include <vcl/vppcom.h>
19 #include <vcl/vcl_debug.h>
20 #include <vcl/vcl_private.h>
21 #include <svm/fifo_segment.h>
23 __thread uword __vcl_worker_index = ~0;
26 vcl_segment_is_not_mounted (vcl_worker_t * wrk, u64 segment_handle)
30 if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
33 segment_index = vcl_segment_table_lookup (segment_handle);
34 if (segment_index != VCL_INVALID_SEGMENT_INDEX)
41 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq, u32 n_max_msg)
47 n_msgs = clib_min (svm_msg_q_size (mq), n_max_msg);
48 for (i = 0; i < n_msgs; i++)
50 vec_add2 (wrk->mq_msg_vector, msg, 1);
51 svm_msg_q_sub_w_lock (mq, msg);
57 vppcom_session_state_str (vcl_session_state_t state)
79 case STATE_VPP_CLOSING:
80 st = "STATE_VPP_CLOSING";
83 case STATE_DISCONNECT:
84 st = "STATE_DISCONNECT";
95 case STATE_LISTEN_NO_MQ:
96 st = "STATE_LISTEN_NO_MQ";
100 st = "UNKNOWN_STATE";
108 format_ip4_address (u8 * s, va_list * args)
110 u8 *a = va_arg (*args, u8 *);
111 return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
115 format_ip6_address (u8 * s, va_list * args)
117 ip6_address_t *a = va_arg (*args, ip6_address_t *);
118 u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon;
120 i_max_n_zero = ARRAY_LEN (a->as_u16);
122 i_first_zero = i_max_n_zero;
124 for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
126 u32 is_zero = a->as_u16[i] == 0;
127 if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16))
133 if ((!is_zero && n_zeros > max_n_zeros)
134 || (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros))
136 i_max_n_zero = i_first_zero;
137 max_n_zeros = n_zeros;
138 i_first_zero = ARRAY_LEN (a->as_u16);
143 last_double_colon = 0;
144 for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
146 if (i == i_max_n_zero && max_n_zeros > 1)
148 s = format (s, "::");
149 i += max_n_zeros - 1;
150 last_double_colon = 1;
154 s = format (s, "%s%x",
155 (last_double_colon || i == 0) ? "" : ":",
156 clib_net_to_host_u16 (a->as_u16[i]));
157 last_double_colon = 0;
164 /* Format an IP46 address. */
166 format_ip46_address (u8 * s, va_list * args)
168 ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
169 ip46_type_t type = va_arg (*args, ip46_type_t);
175 is_ip4 = ip46_address_is_ip4 (ip46);
186 format (s, "%U", format_ip4_address, &ip46->ip4) :
187 format (s, "%U", format_ip6_address, &ip46->ip6);
191 * VPPCOM Utility Functions
195 vcl_send_session_listen (vcl_worker_t * wrk, vcl_session_t * s)
197 app_session_evt_t _app_evt, *app_evt = &_app_evt;
198 session_listen_msg_t *mp;
201 mq = vcl_worker_ctrl_mq (wrk);
202 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_LISTEN);
203 mp = (session_listen_msg_t *) app_evt->evt->data;
204 memset (mp, 0, sizeof (*mp));
205 mp->client_index = wrk->my_client_index;
206 mp->context = s->session_index;
207 mp->wrk_index = wrk->vpp_wrk_index;
208 mp->is_ip4 = s->transport.is_ip4;
209 clib_memcpy_fast (&mp->ip, &s->transport.lcl_ip, sizeof (mp->ip));
210 mp->port = s->transport.lcl_port;
211 mp->proto = s->session_type;
212 app_send_ctrl_evt_to_vpp (mq, app_evt);
216 vcl_send_session_connect (vcl_worker_t * wrk, vcl_session_t * s)
218 app_session_evt_t _app_evt, *app_evt = &_app_evt;
219 session_connect_msg_t *mp;
222 mq = vcl_worker_ctrl_mq (wrk);
223 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_CONNECT);
224 mp = (session_connect_msg_t *) app_evt->evt->data;
225 memset (mp, 0, sizeof (*mp));
226 mp->client_index = wrk->my_client_index;
227 mp->context = s->session_index;
228 mp->wrk_index = wrk->vpp_wrk_index;
229 mp->is_ip4 = s->transport.is_ip4;
230 mp->parent_handle = s->parent_handle;
231 clib_memcpy_fast (&mp->ip, &s->transport.rmt_ip, sizeof (mp->ip));
232 clib_memcpy_fast (&mp->lcl_ip, &s->transport.lcl_ip, sizeof (mp->lcl_ip));
233 mp->port = s->transport.rmt_port;
234 mp->proto = s->session_type;
235 app_send_ctrl_evt_to_vpp (mq, app_evt);
239 vcl_send_session_unlisten (vcl_worker_t * wrk, vcl_session_t * s)
241 app_session_evt_t _app_evt, *app_evt = &_app_evt;
242 session_unlisten_msg_t *mp;
245 mq = vcl_worker_ctrl_mq (wrk);
246 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_UNLISTEN);
247 mp = (session_unlisten_msg_t *) app_evt->evt->data;
248 memset (mp, 0, sizeof (*mp));
249 mp->client_index = wrk->my_client_index;
250 mp->wrk_index = wrk->vpp_wrk_index;
251 mp->handle = s->vpp_handle;
252 mp->context = wrk->wrk_index;
253 app_send_ctrl_evt_to_vpp (mq, app_evt);
257 vcl_send_session_disconnect (vcl_worker_t * wrk, vcl_session_t * s)
259 app_session_evt_t _app_evt, *app_evt = &_app_evt;
260 session_disconnect_msg_t *mp;
263 /* Send to thread that owns the session */
265 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_DISCONNECT);
266 mp = (session_disconnect_msg_t *) app_evt->evt->data;
267 memset (mp, 0, sizeof (*mp));
268 mp->client_index = wrk->my_client_index;
269 mp->handle = s->vpp_handle;
270 app_send_ctrl_evt_to_vpp (mq, app_evt);
274 vcl_send_app_detach (vcl_worker_t * wrk)
276 app_session_evt_t _app_evt, *app_evt = &_app_evt;
277 session_app_detach_msg_t *mp;
280 mq = vcl_worker_ctrl_mq (wrk);
281 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_APP_DETACH);
282 mp = (session_app_detach_msg_t *) app_evt->evt->data;
283 memset (mp, 0, sizeof (*mp));
284 mp->client_index = wrk->my_client_index;
285 app_send_ctrl_evt_to_vpp (mq, app_evt);
289 vcl_send_session_accepted_reply (svm_msg_q_t * mq, u32 context,
290 session_handle_t handle, int retval)
292 app_session_evt_t _app_evt, *app_evt = &_app_evt;
293 session_accepted_reply_msg_t *rmp;
294 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_ACCEPTED_REPLY);
295 rmp = (session_accepted_reply_msg_t *) app_evt->evt->data;
296 rmp->handle = handle;
297 rmp->context = context;
298 rmp->retval = retval;
299 app_send_ctrl_evt_to_vpp (mq, app_evt);
303 vcl_send_session_disconnected_reply (svm_msg_q_t * mq, u32 context,
304 session_handle_t handle, int retval)
306 app_session_evt_t _app_evt, *app_evt = &_app_evt;
307 session_disconnected_reply_msg_t *rmp;
308 app_alloc_ctrl_evt_to_vpp (mq, app_evt,
309 SESSION_CTRL_EVT_DISCONNECTED_REPLY);
310 rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
311 rmp->handle = handle;
312 rmp->context = context;
313 rmp->retval = retval;
314 app_send_ctrl_evt_to_vpp (mq, app_evt);
318 vcl_send_session_reset_reply (svm_msg_q_t * mq, u32 context,
319 session_handle_t handle, int retval)
321 app_session_evt_t _app_evt, *app_evt = &_app_evt;
322 session_reset_reply_msg_t *rmp;
323 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_RESET_REPLY);
324 rmp = (session_reset_reply_msg_t *) app_evt->evt->data;
325 rmp->handle = handle;
326 rmp->context = context;
327 rmp->retval = retval;
328 app_send_ctrl_evt_to_vpp (mq, app_evt);
332 vcl_send_session_worker_update (vcl_worker_t * wrk, vcl_session_t * s,
335 app_session_evt_t _app_evt, *app_evt = &_app_evt;
336 session_worker_update_msg_t *mp;
339 mq = vcl_session_vpp_evt_q (wrk, s);
340 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_WORKER_UPDATE);
341 mp = (session_worker_update_msg_t *) app_evt->evt->data;
342 mp->client_index = wrk->my_client_index;
343 mp->handle = s->vpp_handle;
344 mp->req_wrk_index = wrk->vpp_wrk_index;
345 mp->wrk_index = wrk_index;
346 app_send_ctrl_evt_to_vpp (mq, app_evt);
350 vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp,
353 vcl_session_t *session, *listen_session;
354 svm_fifo_t *rx_fifo, *tx_fifo;
358 session = vcl_session_alloc (wrk);
360 listen_session = vcl_session_get (wrk, ls_index);
361 if (listen_session->vpp_handle != mp->listener_handle)
363 VDBG (0, "ERROR: listener handle %lu does not match session %u",
364 mp->listener_handle, ls_index);
368 if (vcl_segment_is_not_mounted (wrk, mp->segment_handle))
370 VDBG (0, "ERROR: segment for session %u is not mounted!",
371 session->session_index);
375 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
376 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
377 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
379 rx_fifo->client_session_index = session->session_index;
380 tx_fifo->client_session_index = session->session_index;
381 rx_fifo->client_thread_index = vcl_get_worker_index ();
382 tx_fifo->client_thread_index = vcl_get_worker_index ();
383 vpp_wrk_index = tx_fifo->master_thread_index;
384 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
385 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
387 session->vpp_handle = mp->handle;
388 session->vpp_thread_index = rx_fifo->master_thread_index;
389 session->rx_fifo = rx_fifo;
390 session->tx_fifo = tx_fifo;
392 session->session_state = STATE_ACCEPT;
393 session->transport.rmt_port = mp->rmt.port;
394 session->transport.is_ip4 = mp->rmt.is_ip4;
395 clib_memcpy_fast (&session->transport.rmt_ip, &mp->rmt.ip,
396 sizeof (ip46_address_t));
398 vcl_session_table_add_vpp_handle (wrk, mp->handle, session->session_index);
399 session->transport.lcl_port = listen_session->transport.lcl_port;
400 session->transport.lcl_ip = listen_session->transport.lcl_ip;
401 session->session_type = listen_session->session_type;
402 session->is_dgram = vcl_proto_is_dgram (session->session_type);
403 session->listener_index = listen_session->session_index;
404 listen_session->n_accepted_sessions++;
406 VDBG (1, "session %u [0x%llx]: client accept request from %s address %U"
407 " port %d queue %p!", session->session_index, mp->handle,
408 mp->rmt.is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &mp->rmt.ip,
409 mp->rmt.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
410 clib_net_to_host_u16 (mp->rmt.port), session->vpp_evt_q);
411 vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index);
413 vcl_send_session_accepted_reply (session->vpp_evt_q, mp->context,
414 session->vpp_handle, 0);
416 return session->session_index;
419 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
420 vcl_send_session_accepted_reply (evt_q, mp->context, mp->handle,
421 VNET_API_ERROR_INVALID_ARGUMENT);
422 vcl_session_free (wrk, session);
423 return VCL_INVALID_SESSION_INDEX;
427 vcl_session_connected_handler (vcl_worker_t * wrk,
428 session_connected_msg_t * mp)
430 u32 session_index, vpp_wrk_index;
431 svm_fifo_t *rx_fifo, *tx_fifo;
432 vcl_session_t *session = 0;
434 session_index = mp->context;
435 session = vcl_session_get (wrk, session_index);
438 VDBG (0, "ERROR: vpp handle 0x%llx has no session index (%u)!",
439 mp->handle, session_index);
440 return VCL_INVALID_SESSION_INDEX;
444 VDBG (0, "ERROR: session index %u: connect failed! %U",
445 session_index, format_api_error, ntohl (mp->retval));
446 session->session_state = STATE_FAILED | STATE_DISCONNECT;
447 session->vpp_handle = mp->handle;
448 return session_index;
451 session->vpp_handle = mp->handle;
452 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
454 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
455 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
456 if (vcl_segment_is_not_mounted (wrk, mp->segment_handle))
458 VDBG (0, "segment for session %u is not mounted!",
459 session->session_index);
460 session->session_state = STATE_FAILED | STATE_DISCONNECT;
461 vcl_send_session_disconnect (wrk, session);
462 return session_index;
465 rx_fifo->client_session_index = session_index;
466 tx_fifo->client_session_index = session_index;
467 rx_fifo->client_thread_index = vcl_get_worker_index ();
468 tx_fifo->client_thread_index = vcl_get_worker_index ();
470 vpp_wrk_index = tx_fifo->master_thread_index;
471 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
472 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
476 session->ct_rx_fifo = uword_to_pointer (mp->ct_rx_fifo, svm_fifo_t *);
477 session->ct_tx_fifo = uword_to_pointer (mp->ct_tx_fifo, svm_fifo_t *);
478 if (vcl_segment_is_not_mounted (wrk, mp->ct_segment_handle))
480 VDBG (0, "ct segment for session %u is not mounted!",
481 session->session_index);
482 session->session_state = STATE_FAILED | STATE_DISCONNECT;
483 vcl_send_session_disconnect (wrk, session);
484 return session_index;
488 session->rx_fifo = rx_fifo;
489 session->tx_fifo = tx_fifo;
490 session->vpp_thread_index = rx_fifo->master_thread_index;
491 session->transport.is_ip4 = mp->lcl.is_ip4;
492 clib_memcpy_fast (&session->transport.lcl_ip, &mp->lcl.ip,
493 sizeof (session->transport.lcl_ip));
494 session->transport.lcl_port = mp->lcl.port;
495 session->session_state = STATE_CONNECT;
497 /* Add it to lookup table */
498 vcl_session_table_add_vpp_handle (wrk, mp->handle, session_index);
500 VDBG (1, "session %u [0x%llx] connected! rx_fifo %p, refcnt %d, tx_fifo %p,"
501 " refcnt %d", session_index, mp->handle, session->rx_fifo,
502 session->rx_fifo->refcnt, session->tx_fifo, session->tx_fifo->refcnt);
504 return session_index;
508 vcl_flag_accepted_session (vcl_session_t * session, u64 handle, u32 flags)
510 vcl_session_msg_t *accepted_msg;
513 for (i = 0; i < vec_len (session->accept_evts_fifo); i++)
515 accepted_msg = &session->accept_evts_fifo[i];
516 if (accepted_msg->accepted_msg.handle == handle)
518 accepted_msg->flags |= flags;
526 vcl_session_reset_handler (vcl_worker_t * wrk,
527 session_reset_msg_t * reset_msg)
529 vcl_session_t *session;
532 sid = vcl_session_index_from_vpp_handle (wrk, reset_msg->handle);
533 session = vcl_session_get (wrk, sid);
536 VDBG (0, "request to reset unknown handle 0x%llx", reset_msg->handle);
537 return VCL_INVALID_SESSION_INDEX;
540 /* Caught a reset before actually accepting the session */
541 if (session->session_state == STATE_LISTEN)
544 if (!vcl_flag_accepted_session (session, reset_msg->handle,
545 VCL_ACCEPTED_F_RESET))
546 VDBG (0, "session was not accepted!");
547 return VCL_INVALID_SESSION_INDEX;
550 session->session_state = STATE_DISCONNECT;
551 VDBG (0, "reset session %u [0x%llx]", sid, reset_msg->handle);
556 vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp)
558 vcl_session_t *session;
559 u32 sid = mp->context;
561 session = vcl_session_get (wrk, sid);
564 VERR ("session %u [0x%llx]: bind failed: %U", sid, mp->handle,
565 format_api_error, mp->retval);
568 session->session_state = STATE_FAILED;
569 session->vpp_handle = mp->handle;
574 VDBG (0, "ERROR: session %u [0x%llx]: Invalid session index!",
576 return VCL_INVALID_SESSION_INDEX;
580 session->vpp_handle = mp->handle;
581 session->transport.is_ip4 = mp->lcl_is_ip4;
582 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
583 sizeof (ip46_address_t));
584 session->transport.lcl_port = mp->lcl_port;
585 vcl_session_table_add_listener (wrk, mp->handle, sid);
586 session->session_state = STATE_LISTEN;
588 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
589 vec_validate (wrk->vpp_event_queues, 0);
590 wrk->vpp_event_queues[0] = session->vpp_evt_q;
592 if (session->is_dgram)
594 svm_fifo_t *rx_fifo, *tx_fifo;
595 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
596 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
597 rx_fifo->client_session_index = sid;
598 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
599 tx_fifo->client_session_index = sid;
600 session->rx_fifo = rx_fifo;
601 session->tx_fifo = tx_fifo;
604 VDBG (0, "session %u [0x%llx]: listen succeeded!", sid, mp->handle);
609 vcl_session_unlisten_reply_handler (vcl_worker_t * wrk, void *data)
611 session_unlisten_reply_msg_t *mp = (session_unlisten_reply_msg_t *) data;
614 s = vcl_session_get_w_vpp_handle (wrk, mp->handle);
615 if (!s || s->session_state != STATE_DISCONNECT)
617 VDBG (0, "Unlisten reply with wrong handle %llx", mp->handle);
622 VDBG (0, "ERROR: session %u [0xllx]: unlisten failed: %U",
623 s->session_index, mp->handle, format_api_error, ntohl (mp->retval));
625 if (mp->context != wrk->wrk_index)
626 VDBG (0, "wrong context");
628 vcl_session_table_del_vpp_handle (wrk, mp->handle);
629 vcl_session_free (wrk, s);
632 static vcl_session_t *
633 vcl_session_accepted (vcl_worker_t * wrk, session_accepted_msg_t * msg)
635 vcl_session_msg_t *vcl_msg;
636 vcl_session_t *session;
638 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
639 if (PREDICT_FALSE (session != 0))
640 VWRN ("session overlap handle %lu state %u!", msg->handle,
641 session->session_state);
643 session = vcl_session_table_lookup_listener (wrk, msg->listener_handle);
646 VERR ("couldn't find listen session: listener handle %llx",
647 msg->listener_handle);
651 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
652 vcl_msg->accepted_msg = *msg;
653 /* Session handle points to listener until fully accepted by app */
654 vcl_session_table_add_vpp_handle (wrk, msg->handle, session->session_index);
659 static vcl_session_t *
660 vcl_session_disconnected_handler (vcl_worker_t * wrk,
661 session_disconnected_msg_t * msg)
663 vcl_session_t *session;
665 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
668 VDBG (0, "request to disconnect unknown handle 0x%llx", msg->handle);
672 /* Caught a disconnect before actually accepting the session */
673 if (session->session_state == STATE_LISTEN)
675 if (!vcl_flag_accepted_session (session, msg->handle,
676 VCL_ACCEPTED_F_CLOSED))
677 VDBG (0, "session was not accepted!");
681 session->session_state = STATE_VPP_CLOSING;
686 vcl_session_req_worker_update_handler (vcl_worker_t * wrk, void *data)
688 session_req_worker_update_msg_t *msg;
691 msg = (session_req_worker_update_msg_t *) data;
692 s = vcl_session_get_w_vpp_handle (wrk, msg->session_handle);
696 vec_add1 (wrk->pending_session_wrk_updates, s->session_index);
700 vcl_session_worker_update_reply_handler (vcl_worker_t * wrk, void *data)
702 session_worker_update_reply_msg_t *msg;
705 msg = (session_worker_update_reply_msg_t *) data;
706 s = vcl_session_get_w_vpp_handle (wrk, msg->handle);
709 VDBG (0, "unknown handle 0x%llx", msg->handle);
712 if (vcl_segment_is_not_mounted (wrk, msg->segment_handle))
714 clib_warning ("segment for session %u is not mounted!",
721 s->rx_fifo = uword_to_pointer (msg->rx_fifo, svm_fifo_t *);
722 s->tx_fifo = uword_to_pointer (msg->tx_fifo, svm_fifo_t *);
723 s->rx_fifo->client_session_index = s->session_index;
724 s->tx_fifo->client_session_index = s->session_index;
725 s->rx_fifo->client_thread_index = wrk->wrk_index;
726 s->tx_fifo->client_thread_index = wrk->wrk_index;
728 s->session_state = STATE_UPDATED;
730 VDBG (0, "session %u[0x%llx] moved to worker %u", s->session_index,
731 s->vpp_handle, wrk->wrk_index);
735 vcl_session_app_add_segment_handler (vcl_worker_t * wrk, void *data)
737 ssvm_segment_type_t seg_type = SSVM_SEGMENT_SHM;
738 session_app_add_segment_msg_t *msg;
742 msg = (session_app_add_segment_msg_t *) data;
746 vl_socket_client_recv_fd_msg2 (&wrk->bapi_sock_ctx, &fd, 1, 5);
747 seg_type = SSVM_SEGMENT_MEMFD;
750 segment_handle = msg->segment_handle;
751 if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
753 clib_warning ("invalid segment handle");
757 if (vcl_segment_attach (segment_handle, (char *) msg->segment_name,
760 VDBG (0, "vcl_segment_attach ('%s') failed", msg->segment_name);
764 VDBG (1, "mapped new segment '%s' size %d", msg->segment_name,
769 vcl_session_app_del_segment_handler (vcl_worker_t * wrk, void *data)
771 session_app_del_segment_msg_t *msg = (session_app_del_segment_msg_t *) data;
772 vcl_segment_detach (msg->segment_handle);
773 VDBG (1, "Unmapped segment: %d", msg->segment_handle);
777 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
779 session_disconnected_msg_t *disconnected_msg;
780 vcl_session_t *session;
782 switch (e->event_type)
784 case SESSION_IO_EVT_RX:
785 case SESSION_IO_EVT_TX:
786 session = vcl_session_get (wrk, e->session_index);
787 if (!session || !(session->session_state & STATE_OPEN))
789 vec_add1 (wrk->unhandled_evts_vector, *e);
791 case SESSION_CTRL_EVT_ACCEPTED:
792 vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
794 case SESSION_CTRL_EVT_CONNECTED:
795 vcl_session_connected_handler (wrk,
796 (session_connected_msg_t *) e->data);
798 case SESSION_CTRL_EVT_DISCONNECTED:
799 disconnected_msg = (session_disconnected_msg_t *) e->data;
800 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
803 VDBG (0, "disconnected session %u [0x%llx]", session->session_index,
804 session->vpp_handle);
806 case SESSION_CTRL_EVT_RESET:
807 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
809 case SESSION_CTRL_EVT_BOUND:
810 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
812 case SESSION_CTRL_EVT_UNLISTEN_REPLY:
813 vcl_session_unlisten_reply_handler (wrk, e->data);
815 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
816 vcl_session_req_worker_update_handler (wrk, e->data);
818 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
819 vcl_session_worker_update_reply_handler (wrk, e->data);
821 case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
822 vcl_session_app_add_segment_handler (wrk, e->data);
824 case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
825 vcl_session_app_del_segment_handler (wrk, e->data);
828 clib_warning ("unhandled %u", e->event_type);
834 vppcom_wait_for_session_state_change (u32 session_index,
835 vcl_session_state_t state,
838 vcl_worker_t *wrk = vcl_worker_get_current ();
839 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
840 vcl_session_t *volatile session;
846 session = vcl_session_get (wrk, session_index);
847 if (PREDICT_FALSE (!session))
849 return VPPCOM_EBADFD;
851 if (session->session_state & state)
855 if (session->session_state & STATE_FAILED)
857 return VPPCOM_ECONNREFUSED;
860 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
865 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
866 vcl_handle_mq_event (wrk, e);
867 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
869 while (clib_time_now (&wrk->clib_time) < timeout);
871 VDBG (0, "timeout waiting for state 0x%x (%s)", state,
872 vppcom_session_state_str (state));
873 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
875 return VPPCOM_ETIMEDOUT;
879 vcl_handle_pending_wrk_updates (vcl_worker_t * wrk)
881 vcl_session_state_t state;
885 if (PREDICT_TRUE (vec_len (wrk->pending_session_wrk_updates) == 0))
888 vec_foreach (sip, wrk->pending_session_wrk_updates)
890 s = vcl_session_get (wrk, *sip);
891 vcl_send_session_worker_update (wrk, s, wrk->wrk_index);
892 state = s->session_state;
893 vppcom_wait_for_session_state_change (s->session_index, STATE_UPDATED, 5);
894 s->session_state = state;
896 vec_reset_length (wrk->pending_session_wrk_updates);
900 vcl_flush_mq_events (void)
902 vcl_worker_t *wrk = vcl_worker_get_current ();
903 svm_msg_q_msg_t *msg;
908 mq = wrk->app_event_queue;
910 vcl_mq_dequeue_batch (wrk, mq, ~0);
911 svm_msg_q_unlock (mq);
913 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
915 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
916 e = svm_msg_q_msg_data (mq, msg);
917 vcl_handle_mq_event (wrk, e);
918 svm_msg_q_free_msg (mq, msg);
920 vec_reset_length (wrk->mq_msg_vector);
921 vcl_handle_pending_wrk_updates (wrk);
925 vppcom_app_session_enable (void)
929 if (vcm->app_state != STATE_APP_ENABLED)
931 vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
932 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
933 if (PREDICT_FALSE (rv))
935 VDBG (0, "application session enable timed out! returning %d (%s)",
936 rv, vppcom_retval_str (rv));
944 vppcom_app_attach (void)
948 vppcom_app_send_attach ();
949 rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED);
950 if (PREDICT_FALSE (rv))
952 VDBG (0, "application attach timed out! returning %d (%s)", rv,
953 vppcom_retval_str (rv));
961 vppcom_session_unbind (u32 session_handle)
963 vcl_worker_t *wrk = vcl_worker_get_current ();
964 session_accepted_msg_t *accepted_msg;
965 vcl_session_t *session = 0;
966 vcl_session_msg_t *evt;
968 session = vcl_session_get_w_handle (wrk, session_handle);
970 return VPPCOM_EBADFD;
972 /* Flush pending accept events, if any */
973 while (clib_fifo_elts (session->accept_evts_fifo))
975 clib_fifo_sub2 (session->accept_evts_fifo, evt);
976 accepted_msg = &evt->accepted_msg;
977 vcl_session_table_del_vpp_handle (wrk, accepted_msg->handle);
978 vcl_send_session_accepted_reply (session->vpp_evt_q,
979 accepted_msg->context,
980 session->vpp_handle, -1);
982 clib_fifo_free (session->accept_evts_fifo);
984 vcl_send_session_unlisten (wrk, session);
986 VDBG (1, "session %u [0x%llx]: sending unbind!", session->session_index,
987 session->vpp_handle);
988 vcl_evt (VCL_EVT_UNBIND, session);
990 session->vpp_handle = ~0;
991 session->session_state = STATE_DISCONNECT;
997 vppcom_session_disconnect (u32 session_handle)
999 vcl_worker_t *wrk = vcl_worker_get_current ();
1000 svm_msg_q_t *vpp_evt_q;
1001 vcl_session_t *session, *listen_session;
1002 vcl_session_state_t state;
1005 session = vcl_session_get_w_handle (wrk, session_handle);
1007 return VPPCOM_EBADFD;
1009 vpp_handle = session->vpp_handle;
1010 state = session->session_state;
1012 VDBG (1, "session %u [0x%llx] state 0x%x (%s)", session->session_index,
1013 vpp_handle, state, vppcom_session_state_str (state));
1015 if (PREDICT_FALSE (state & STATE_LISTEN))
1017 VDBG (0, "ERROR: Cannot disconnect a listen socket!");
1018 return VPPCOM_EBADFD;
1021 if (state & STATE_VPP_CLOSING)
1023 vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
1024 vcl_send_session_disconnected_reply (vpp_evt_q, wrk->my_client_index,
1026 VDBG (1, "session %u [0x%llx]: sending disconnect REPLY...",
1027 session->session_index, vpp_handle);
1031 VDBG (1, "session %u [0x%llx]: sending disconnect...",
1032 session->session_index, vpp_handle);
1033 vcl_send_session_disconnect (wrk, session);
1036 if (session->listener_index != VCL_INVALID_SESSION_INDEX)
1038 listen_session = vcl_session_get (wrk, session->listener_index);
1039 listen_session->n_accepted_sessions--;
1048 * Notify vpp of the disconnect and mark the worker as free. If we're the
1049 * last worker, do a full cleanup otherwise, since we're probably a forked
1050 * child, avoid syscalls as much as possible. We might've lost privileges.
1053 vppcom_app_exit (void)
1055 if (!pool_elts (vcm->workers))
1057 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
1058 vcl_set_worker_index (~0);
1059 vcl_elog_stop (vcm);
1063 * VPPCOM Public API functions
1066 vppcom_app_create (char *app_name)
1068 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
1073 VDBG (1, "already initialized");
1074 return VPPCOM_EEXIST;
1078 vppcom_cfg (&vcm->cfg);
1079 vcl_cfg = &vcm->cfg;
1081 vcm->main_cpu = pthread_self ();
1082 vcm->main_pid = getpid ();
1083 vcm->app_name = format (0, "%s", app_name);
1084 vppcom_init_error_string_table ();
1085 fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva,
1086 20 /* timeout in secs */ );
1087 pool_alloc (vcm->workers, vcl_cfg->max_workers);
1088 clib_spinlock_init (&vcm->workers_lock);
1089 clib_rwlock_init (&vcm->segment_table_lock);
1090 atexit (vppcom_app_exit);
1092 /* Allocate default worker */
1093 vcl_worker_alloc_and_init ();
1095 /* API hookup and connect to VPP */
1096 vcl_elog_init (vcm);
1097 vcm->app_state = STATE_APP_START;
1098 rv = vppcom_connect_to_vpp (app_name);
1101 VERR ("couldn't connect to VPP!");
1104 VDBG (0, "sending session enable");
1105 rv = vppcom_app_session_enable ();
1108 VERR ("vppcom_app_session_enable() failed!");
1112 VDBG (0, "sending app attach");
1113 rv = vppcom_app_attach ();
1116 VERR ("vppcom_app_attach() failed!");
1120 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
1121 vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
1127 vppcom_app_destroy (void)
1130 f64 orig_app_timeout;
1132 if (!pool_elts (vcm->workers))
1135 vcl_evt (VCL_EVT_DETACH, vcm);
1137 if (pool_elts (vcm->workers) == 1)
1139 vcl_send_app_detach (vcl_worker_get_current ());
1140 orig_app_timeout = vcm->cfg.app_timeout;
1141 vcm->cfg.app_timeout = 2.0;
1142 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
1143 vcm->cfg.app_timeout = orig_app_timeout;
1144 if (PREDICT_FALSE (rv))
1145 VDBG (0, "application detach timed out! returning %d (%s)", rv,
1146 vppcom_retval_str (rv));
1147 vec_free (vcm->app_name);
1148 vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ );
1152 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
1155 vcl_set_worker_index (~0);
1156 vcl_elog_stop (vcm);
1157 vl_client_disconnect_from_vlib ();
1161 vppcom_session_create (u8 proto, u8 is_nonblocking)
1163 vcl_worker_t *wrk = vcl_worker_get_current ();
1164 vcl_session_t *session;
1166 session = vcl_session_alloc (wrk);
1168 session->session_type = proto;
1169 session->session_state = STATE_START;
1170 session->vpp_handle = ~0;
1171 session->is_dgram = vcl_proto_is_dgram (proto);
1174 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
1176 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
1177 is_nonblocking, session_index);
1179 VDBG (0, "created session %u", session->session_index);
1181 return vcl_session_handle (session);
1185 vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * session,
1186 vcl_session_handle_t sh, u8 do_disconnect)
1188 vcl_session_state_t state;
1189 u32 next_sh, vep_sh;
1194 is_vep = session->is_vep;
1195 next_sh = session->vep.next_sh;
1196 vep_sh = session->vep.vep_sh;
1197 state = session->session_state;
1198 vpp_handle = session->vpp_handle;
1200 VDBG (1, "session %u [0x%llx] closing", session->session_index, vpp_handle);
1204 while (next_sh != ~0)
1206 rv = vppcom_epoll_ctl (sh, EPOLL_CTL_DEL, next_sh, 0);
1207 if (PREDICT_FALSE (rv < 0))
1208 VDBG (0, "vpp handle 0x%llx, sh %u: EPOLL_CTL_DEL vep_idx %u"
1209 " failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
1210 vppcom_retval_str (rv));
1212 next_sh = session->vep.next_sh;
1217 if (session->is_vep_session)
1219 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, sh, 0);
1221 VDBG (0, "session %u [0x%llx]: EPOLL_CTL_DEL vep_idx %u "
1222 "failed! rv %d (%s)", session->session_index, vpp_handle,
1223 vep_sh, rv, vppcom_retval_str (rv));
1228 VDBG (1, "session %u [0x%llx] disconnect skipped",
1229 session->session_index, vpp_handle);
1233 if (state & STATE_LISTEN)
1235 rv = vppcom_session_unbind (sh);
1236 if (PREDICT_FALSE (rv < 0))
1237 VDBG (0, "session %u [0x%llx]: listener unbind failed! "
1238 "rv %d (%s)", session->session_index, vpp_handle, rv,
1239 vppcom_retval_str (rv));
1242 else if ((state & STATE_OPEN)
1243 || (vcl_session_is_connectable_listener (wrk, session)))
1245 rv = vppcom_session_disconnect (sh);
1246 if (PREDICT_FALSE (rv < 0))
1247 VDBG (0, "ERROR: session %u [0x%llx]: disconnect failed!"
1248 " rv %d (%s)", session->session_index, vpp_handle,
1249 rv, vppcom_retval_str (rv));
1251 else if (state == STATE_DISCONNECT)
1253 svm_msg_q_t *mq = vcl_session_vpp_evt_q (wrk, session);
1254 vcl_send_session_reset_reply (mq, wrk->my_client_index,
1255 session->vpp_handle, 0);
1259 VDBG (0, "session %u [0x%llx] removed", session->session_index, vpp_handle);
1262 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
1263 vcl_session_free (wrk, session);
1264 vcl_evt (VCL_EVT_CLOSE, session, rv);
1270 vppcom_session_close (uint32_t session_handle)
1272 vcl_worker_t *wrk = vcl_worker_get_current ();
1273 vcl_session_t *session;
1275 session = vcl_session_get_w_handle (wrk, session_handle);
1277 return VPPCOM_EBADFD;
1278 return vcl_session_cleanup (wrk, session, session_handle,
1279 1 /* do_disconnect */ );
1283 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1285 vcl_worker_t *wrk = vcl_worker_get_current ();
1286 vcl_session_t *session = 0;
1289 return VPPCOM_EINVAL;
1291 session = vcl_session_get_w_handle (wrk, session_handle);
1293 return VPPCOM_EBADFD;
1295 if (session->is_vep)
1297 VDBG (0, "ERROR: cannot bind to epoll session %u!",
1298 session->session_index);
1299 return VPPCOM_EBADFD;
1302 session->transport.is_ip4 = ep->is_ip4;
1304 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1305 sizeof (ip4_address_t));
1307 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1308 sizeof (ip6_address_t));
1309 session->transport.lcl_port = ep->port;
1311 VDBG (0, "session %u handle %u: binding to local %s address %U port %u, "
1312 "proto %s", session->session_index, session_handle,
1313 session->transport.is_ip4 ? "IPv4" : "IPv6",
1314 format_ip46_address, &session->transport.lcl_ip,
1315 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1316 clib_net_to_host_u16 (session->transport.lcl_port),
1317 vppcom_proto_str (session->session_type));
1318 vcl_evt (VCL_EVT_BIND, session);
1320 if (session->session_type == VPPCOM_PROTO_UDP)
1321 vppcom_session_listen (session_handle, 10);
1327 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1329 vcl_worker_t *wrk = vcl_worker_get_current ();
1330 vcl_session_t *listen_session = 0;
1331 u64 listen_vpp_handle;
1334 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1335 if (!listen_session || listen_session->is_vep)
1336 return VPPCOM_EBADFD;
1338 if (q_len == 0 || q_len == ~0)
1339 q_len = vcm->cfg.listen_queue_size;
1341 listen_vpp_handle = listen_session->vpp_handle;
1342 if (listen_session->session_state & STATE_LISTEN)
1344 VDBG (0, "session %u [0x%llx]: already in listen state!",
1345 listen_sh, listen_vpp_handle);
1349 VDBG (0, "session %u: sending vpp listen request...", listen_sh);
1352 * Send listen request to vpp and wait for reply
1354 vcl_send_session_listen (wrk, listen_session);
1355 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1357 vcm->cfg.session_timeout);
1359 if (PREDICT_FALSE (rv))
1361 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1362 VDBG (0, "session %u [0x%llx]: listen failed! returning %d (%s)",
1363 listen_sh, listen_session->vpp_handle, rv,
1364 vppcom_retval_str (rv));
1372 vppcom_session_tls_add_cert (uint32_t session_handle, char *cert,
1376 vcl_worker_t *wrk = vcl_worker_get_current ();
1377 vcl_session_t *session = 0;
1379 session = vcl_session_get_w_handle (wrk, session_handle);
1381 return VPPCOM_EBADFD;
1383 if (cert_len == 0 || cert_len == ~0)
1384 return VPPCOM_EBADFD;
1387 * Send listen request to vpp and wait for reply
1389 vppcom_send_application_tls_cert_add (session, cert, cert_len);
1390 vcm->app_state = STATE_APP_ADDING_TLS_DATA;
1391 vcl_wait_for_app_state_change (STATE_APP_READY);
1397 vppcom_session_tls_add_key (uint32_t session_handle, char *key,
1401 vcl_worker_t *wrk = vcl_worker_get_current ();
1402 vcl_session_t *session = 0;
1404 session = vcl_session_get_w_handle (wrk, session_handle);
1406 return VPPCOM_EBADFD;
1408 if (key_len == 0 || key_len == ~0)
1409 return VPPCOM_EBADFD;
1411 vppcom_send_application_tls_key_add (session, key, key_len);
1412 vcm->app_state = STATE_APP_ADDING_TLS_DATA;
1413 vcl_wait_for_app_state_change (STATE_APP_READY);
1418 validate_args_session_accept_ (vcl_worker_t * wrk, vcl_session_t * ls)
1422 VDBG (0, "ERROR: cannot accept on epoll session %u!",
1424 return VPPCOM_EBADFD;
1427 if ((ls->session_state != STATE_LISTEN)
1428 && (!vcl_session_is_connectable_listener (wrk, ls)))
1431 "ERROR: session [0x%llx]: not in listen state! state 0x%x"
1432 " (%s)", ls->vpp_handle, ls->session_state,
1433 vppcom_session_state_str (ls->session_state));
1434 return VPPCOM_EBADFD;
1440 vppcom_unformat_proto (uint8_t * proto, char *proto_str)
1442 if (!strcmp (proto_str, "TCP"))
1443 *proto = VPPCOM_PROTO_TCP;
1444 else if (!strcmp (proto_str, "tcp"))
1445 *proto = VPPCOM_PROTO_TCP;
1446 else if (!strcmp (proto_str, "UDP"))
1447 *proto = VPPCOM_PROTO_UDP;
1448 else if (!strcmp (proto_str, "udp"))
1449 *proto = VPPCOM_PROTO_UDP;
1450 else if (!strcmp (proto_str, "UDPC"))
1451 *proto = VPPCOM_PROTO_UDPC;
1452 else if (!strcmp (proto_str, "udpc"))
1453 *proto = VPPCOM_PROTO_UDPC;
1454 else if (!strcmp (proto_str, "SCTP"))
1455 *proto = VPPCOM_PROTO_SCTP;
1456 else if (!strcmp (proto_str, "sctp"))
1457 *proto = VPPCOM_PROTO_SCTP;
1458 else if (!strcmp (proto_str, "TLS"))
1459 *proto = VPPCOM_PROTO_TLS;
1460 else if (!strcmp (proto_str, "tls"))
1461 *proto = VPPCOM_PROTO_TLS;
1462 else if (!strcmp (proto_str, "QUIC"))
1463 *proto = VPPCOM_PROTO_QUIC;
1464 else if (!strcmp (proto_str, "quic"))
1465 *proto = VPPCOM_PROTO_QUIC;
1472 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1475 u32 client_session_index = ~0, listen_session_index, accept_flags = 0;
1476 vcl_worker_t *wrk = vcl_worker_get_current ();
1477 session_accepted_msg_t accepted_msg;
1478 vcl_session_t *listen_session = 0;
1479 vcl_session_t *client_session = 0;
1480 vcl_session_msg_t *evt;
1481 svm_msg_q_msg_t msg;
1486 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1487 if (!listen_session)
1488 return VPPCOM_EBADFD;
1490 listen_session_index = listen_session->session_index;
1491 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1494 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1496 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1497 accept_flags = evt->flags;
1498 accepted_msg = evt->accepted_msg;
1502 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1503 VCL_SESS_ATTR_NONBLOCK);
1506 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1507 return VPPCOM_EAGAIN;
1509 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1510 return VPPCOM_EAGAIN;
1512 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1513 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1515 vcl_handle_mq_event (wrk, e);
1516 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1519 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1520 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1526 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg,
1527 listen_session_index);
1528 if (client_session_index == VCL_INVALID_SESSION_INDEX)
1529 return VPPCOM_ECONNABORTED;
1531 listen_session = vcl_session_get (wrk, listen_session_index);
1532 client_session = vcl_session_get (wrk, client_session_index);
1534 if (flags & O_NONBLOCK)
1535 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1537 VDBG (1, "listener %u [0x%llx]: Got a connect request! session %u [0x%llx],"
1538 " flags %d, is_nonblocking %u", listen_session->session_index,
1539 listen_session->vpp_handle, client_session_index,
1540 client_session->vpp_handle, flags,
1541 VCL_SESS_ATTR_TEST (client_session->attr, VCL_SESS_ATTR_NONBLOCK));
1545 ep->is_ip4 = client_session->transport.is_ip4;
1546 ep->port = client_session->transport.rmt_port;
1547 if (client_session->transport.is_ip4)
1548 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1549 sizeof (ip4_address_t));
1551 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1552 sizeof (ip6_address_t));
1555 VDBG (0, "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u "
1556 "local: %U:%u", listen_session_handle, listen_session->vpp_handle,
1557 client_session_index, client_session->vpp_handle,
1558 format_ip46_address, &client_session->transport.rmt_ip,
1559 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1560 clib_net_to_host_u16 (client_session->transport.rmt_port),
1561 format_ip46_address, &client_session->transport.lcl_ip,
1562 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1563 clib_net_to_host_u16 (client_session->transport.lcl_port));
1564 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1565 client_session_index);
1568 * Session might have been closed already
1572 if (accept_flags & VCL_ACCEPTED_F_CLOSED)
1573 client_session->session_state = STATE_VPP_CLOSING;
1574 else if (accept_flags & VCL_ACCEPTED_F_RESET)
1575 client_session->session_state = STATE_DISCONNECT;
1577 return vcl_session_handle (client_session);
1581 vcl_ip_copy_from_ep (ip46_address_t * ip, vppcom_endpt_t * ep)
1584 clib_memcpy_fast (&ip->ip4, ep->ip, sizeof (ip4_address_t));
1586 clib_memcpy_fast (&ip->ip6, ep->ip, sizeof (ip6_address_t));
1590 vcl_ip_copy_to_ep (ip46_address_t * ip, vppcom_endpt_t * ep, u8 is_ip4)
1592 ep->is_ip4 = is_ip4;
1594 clib_memcpy_fast (ep->ip, &ip->ip4, sizeof (ip4_address_t));
1596 clib_memcpy_fast (ep->ip, &ip->ip6, sizeof (ip6_address_t));
1600 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1602 vcl_worker_t *wrk = vcl_worker_get_current ();
1603 vcl_session_t *session = 0;
1607 session = vcl_session_get_w_handle (wrk, session_handle);
1609 return VPPCOM_EBADFD;
1610 session_index = session->session_index;
1612 if (PREDICT_FALSE (session->is_vep))
1614 VDBG (0, "ERROR: cannot connect epoll session %u!",
1615 session->session_index);
1616 return VPPCOM_EBADFD;
1619 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1621 VDBG (0, "session handle %u [0x%llx]: session already "
1622 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1623 session_handle, session->vpp_handle,
1624 session->transport.is_ip4 ? "IPv4" : "IPv6", format_ip46_address,
1625 &session->transport.rmt_ip, session->transport.is_ip4 ?
1626 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1627 clib_net_to_host_u16 (session->transport.rmt_port),
1628 vppcom_proto_str (session->session_type), session->session_state,
1629 vppcom_session_state_str (session->session_state));
1633 session->transport.is_ip4 = server_ep->is_ip4;
1634 vcl_ip_copy_from_ep (&session->transport.rmt_ip, server_ep);
1635 session->transport.rmt_port = server_ep->port;
1636 session->parent_handle = VCL_INVALID_SESSION_HANDLE;
1638 VDBG (0, "session handle %u: connecting to server %s %U "
1639 "port %d proto %s", session_handle,
1640 session->transport.is_ip4 ? "IPv4" : "IPv6",
1641 format_ip46_address,
1642 &session->transport.rmt_ip, session->transport.is_ip4 ?
1643 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1644 clib_net_to_host_u16 (session->transport.rmt_port),
1645 vppcom_proto_str (session->session_type));
1647 vcl_send_session_connect (wrk, session);
1649 if (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK))
1650 return VPPCOM_EINPROGRESS;
1653 * Wait for reply from vpp if blocking
1655 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1656 vcm->cfg.session_timeout);
1658 session = vcl_session_get (wrk, session_index);
1659 VDBG (0, "session %u [0x%llx]: connect %s!", session->session_index,
1660 session->vpp_handle, rv ? "failed" : "succeeded");
1666 vppcom_session_stream_connect (uint32_t session_handle,
1667 uint32_t parent_session_handle)
1669 vcl_worker_t *wrk = vcl_worker_get_current ();
1670 vcl_session_t *session, *parent_session;
1671 u32 session_index, parent_session_index;
1674 session = vcl_session_get_w_handle (wrk, session_handle);
1676 return VPPCOM_EBADFD;
1677 parent_session = vcl_session_get_w_handle (wrk, parent_session_handle);
1678 if (!parent_session)
1679 return VPPCOM_EBADFD;
1681 session_index = session->session_index;
1682 parent_session_index = parent_session->session_index;
1683 if (PREDICT_FALSE (session->is_vep))
1685 VDBG (0, "ERROR: cannot connect epoll session %u!",
1686 session->session_index);
1687 return VPPCOM_EBADFD;
1690 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1692 VDBG (0, "session handle %u [0x%llx]: session already "
1693 "connected to session %u [0x%llx] proto %s, state 0x%x (%s)",
1694 session_handle, session->vpp_handle,
1695 parent_session_handle, parent_session->vpp_handle,
1696 vppcom_proto_str (session->session_type), session->session_state,
1697 vppcom_session_state_str (session->session_state));
1701 /* Connect to quic session specifics */
1702 session->transport.is_ip4 = parent_session->transport.is_ip4;
1703 session->transport.rmt_ip.ip4.as_u32 = (uint32_t) 1;
1704 session->transport.rmt_port = 0;
1705 session->parent_handle = parent_session->vpp_handle;
1707 VDBG (0, "session handle %u: connecting to session %u [0x%llx]",
1708 session_handle, parent_session_handle, parent_session->vpp_handle);
1711 * Send connect request and wait for reply from vpp
1713 vcl_send_session_connect (wrk, session);
1714 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1715 vcm->cfg.session_timeout);
1717 session->listener_index = parent_session_index;
1718 parent_session = vcl_session_get_w_handle (wrk, parent_session_handle);
1720 parent_session->n_accepted_sessions++;
1722 session = vcl_session_get (wrk, session_index);
1723 VDBG (0, "session %u [0x%llx]: connect %s!", session->session_index,
1724 session->vpp_handle, rv ? "failed" : "succeeded");
1730 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1732 return (e->event_type == SESSION_IO_EVT_RX && e->session_index == sid);
1736 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1739 vcl_worker_t *wrk = vcl_worker_get_current ();
1740 int n_read = 0, is_nonblocking;
1741 vcl_session_t *s = 0;
1742 svm_fifo_t *rx_fifo;
1743 svm_msg_q_msg_t msg;
1748 if (PREDICT_FALSE (!buf))
1749 return VPPCOM_EINVAL;
1751 s = vcl_session_get_w_handle (wrk, session_handle);
1752 if (PREDICT_FALSE (!s || s->is_vep))
1753 return VPPCOM_EBADFD;
1755 if (PREDICT_FALSE (!vcl_session_is_open (s)))
1757 VDBG (0, "session %u[0x%llx] is not open! state 0x%x (%s)",
1758 s->session_index, s->vpp_handle, s->session_state,
1759 vppcom_session_state_str (s->session_state));
1760 return vcl_session_closed_error (s);
1763 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1764 is_ct = vcl_session_is_ct (s);
1765 mq = wrk->app_event_queue;
1766 rx_fifo = is_ct ? s->ct_rx_fifo : s->rx_fifo;
1769 if (svm_fifo_is_empty_cons (rx_fifo))
1773 if (vcl_session_is_closing (s))
1774 return vcl_session_closing_error (s);
1775 svm_fifo_unset_event (s->rx_fifo);
1776 return VPPCOM_EWOULDBLOCK;
1778 while (svm_fifo_is_empty_cons (rx_fifo))
1780 if (vcl_session_is_closing (s))
1781 return vcl_session_closing_error (s);
1783 svm_fifo_unset_event (s->rx_fifo);
1784 svm_msg_q_lock (mq);
1785 if (svm_msg_q_is_empty (mq))
1786 svm_msg_q_wait (mq);
1788 svm_msg_q_sub_w_lock (mq, &msg);
1789 e = svm_msg_q_msg_data (mq, &msg);
1790 svm_msg_q_unlock (mq);
1791 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1792 vcl_handle_mq_event (wrk, e);
1793 svm_msg_q_free_msg (mq, &msg);
1798 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1800 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1802 if (svm_fifo_is_empty_cons (rx_fifo))
1803 svm_fifo_unset_event (s->rx_fifo);
1805 /* Cut-through sessions might request tx notifications on rx fifos */
1806 if (PREDICT_FALSE (rx_fifo->want_deq_ntf))
1808 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo->master_session_index,
1809 SESSION_IO_EVT_RX, SVM_Q_WAIT);
1810 svm_fifo_reset_has_deq_ntf (s->rx_fifo);
1813 VDBG (2, "session %u[0x%llx]: read %d bytes from (%p)", s->session_index,
1814 s->vpp_handle, n_read, rx_fifo);
1820 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1822 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1826 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1828 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1832 vppcom_session_read_segments (uint32_t session_handle,
1833 vppcom_data_segments_t ds)
1835 vcl_worker_t *wrk = vcl_worker_get_current ();
1836 int n_read = 0, is_nonblocking;
1837 vcl_session_t *s = 0;
1838 svm_fifo_t *rx_fifo;
1839 svm_msg_q_msg_t msg;
1844 s = vcl_session_get_w_handle (wrk, session_handle);
1845 if (PREDICT_FALSE (!s || s->is_vep))
1846 return VPPCOM_EBADFD;
1848 if (PREDICT_FALSE (!vcl_session_is_open (s)))
1849 return vcl_session_closed_error (s);
1851 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1852 is_ct = vcl_session_is_ct (s);
1853 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1854 rx_fifo = s->rx_fifo;
1858 svm_fifo_unset_event (s->rx_fifo);
1860 if (svm_fifo_is_empty_cons (rx_fifo))
1864 svm_fifo_unset_event (rx_fifo);
1865 return VPPCOM_EWOULDBLOCK;
1867 while (svm_fifo_is_empty_cons (rx_fifo))
1869 if (vcl_session_is_closing (s))
1870 return vcl_session_closing_error (s);
1872 svm_fifo_unset_event (rx_fifo);
1873 svm_msg_q_lock (mq);
1874 if (svm_msg_q_is_empty (mq))
1875 svm_msg_q_wait (mq);
1877 svm_msg_q_sub_w_lock (mq, &msg);
1878 e = svm_msg_q_msg_data (mq, &msg);
1879 svm_msg_q_unlock (mq);
1880 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1881 vcl_handle_mq_event (wrk, e);
1882 svm_msg_q_free_msg (mq, &msg);
1886 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_seg_t *) ds);
1887 svm_fifo_unset_event (rx_fifo);
1893 vppcom_session_free_segments (uint32_t session_handle,
1894 vppcom_data_segments_t ds)
1896 vcl_worker_t *wrk = vcl_worker_get_current ();
1899 s = vcl_session_get_w_handle (wrk, session_handle);
1900 if (PREDICT_FALSE (!s || s->is_vep))
1903 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_seg_t *) ds);
1907 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1909 u32 first_copy = clib_min (ds[0].len, max_bytes);
1910 clib_memcpy_fast (buf, ds[0].data, first_copy);
1911 if (first_copy < max_bytes)
1913 clib_memcpy_fast (buf + first_copy, ds[1].data,
1914 clib_min (ds[1].len, max_bytes - first_copy));
1920 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1922 return (e->event_type == SESSION_IO_EVT_TX && e->session_index == sid);
1926 vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
1929 vcl_worker_t *wrk = vcl_worker_get_current ();
1930 int n_write, is_nonblocking;
1931 vcl_session_t *s = 0;
1932 session_evt_type_t et;
1933 svm_msg_q_msg_t msg;
1934 svm_fifo_t *tx_fifo;
1939 if (PREDICT_FALSE (!buf || n == 0))
1940 return VPPCOM_EINVAL;
1942 s = vcl_session_get_w_handle (wrk, session_handle);
1943 if (PREDICT_FALSE (!s))
1944 return VPPCOM_EBADFD;
1946 if (PREDICT_FALSE (s->is_vep))
1948 VDBG (0, "ERROR: session %u [0x%llx]: cannot write to an epoll"
1949 " session!", s->session_index, s->vpp_handle);
1950 return VPPCOM_EBADFD;
1953 if (PREDICT_FALSE (!vcl_session_is_open (s)))
1955 VDBG (1, "session %u [0x%llx]: is not open! state 0x%x (%s)",
1956 s->session_index, s->vpp_handle, s->session_state,
1957 vppcom_session_state_str (s->session_state));
1958 return vcl_session_closed_error (s);;
1961 is_ct = vcl_session_is_ct (s);
1962 tx_fifo = is_ct ? s->ct_tx_fifo : s->tx_fifo;
1963 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1965 mq = wrk->app_event_queue;
1966 if (svm_fifo_is_full_prod (tx_fifo))
1970 return VPPCOM_EWOULDBLOCK;
1972 while (svm_fifo_is_full_prod (tx_fifo))
1974 svm_fifo_add_want_deq_ntf (tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
1975 if (vcl_session_is_closing (s))
1976 return vcl_session_closing_error (s);
1977 svm_msg_q_lock (mq);
1978 if (svm_msg_q_is_empty (mq))
1979 svm_msg_q_wait (mq);
1981 svm_msg_q_sub_w_lock (mq, &msg);
1982 e = svm_msg_q_msg_data (mq, &msg);
1983 svm_msg_q_unlock (mq);
1985 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1986 vcl_handle_mq_event (wrk, e);
1987 svm_msg_q_free_msg (mq, &msg);
1991 et = SESSION_IO_EVT_TX;
1992 if (is_flush && !is_ct)
1993 et = SESSION_IO_EVT_TX_FLUSH;
1996 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1997 s->vpp_evt_q, buf, n, et,
1998 0 /* do_evt */ , SVM_Q_WAIT);
2000 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
2001 0 /* do_evt */ , SVM_Q_WAIT);
2003 if (svm_fifo_set_event (s->tx_fifo))
2004 app_send_io_evt_to_vpp (s->vpp_evt_q, s->tx_fifo->master_session_index,
2007 ASSERT (n_write > 0);
2009 VDBG (2, "session %u [0x%llx]: wrote %d bytes", s->session_index,
2010 s->vpp_handle, n_write);
2016 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
2018 return vppcom_session_write_inline (session_handle, buf, n,
2023 vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n)
2025 return vppcom_session_write_inline (session_handle, buf, n,
2029 #define vcl_fifo_rx_evt_valid_or_break(_s) \
2030 if (PREDICT_FALSE (!_s->rx_fifo)) \
2032 if (PREDICT_FALSE (svm_fifo_is_empty (_s->rx_fifo))) \
2034 if (!vcl_session_is_ct (_s)) \
2036 svm_fifo_unset_event (_s->rx_fifo); \
2037 if (svm_fifo_is_empty (_s->rx_fifo)) \
2040 else if (svm_fifo_is_empty (_s->ct_rx_fifo)) \
2042 svm_fifo_unset_event (_s->ct_rx_fifo); \
2043 if (svm_fifo_is_empty (_s->ct_rx_fifo)) \
2049 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2050 unsigned long n_bits, unsigned long *read_map,
2051 unsigned long *write_map,
2052 unsigned long *except_map, u32 * bits_set)
2054 session_disconnected_msg_t *disconnected_msg;
2055 session_connected_msg_t *connected_msg;
2056 vcl_session_t *session;
2059 switch (e->event_type)
2061 case SESSION_IO_EVT_RX:
2062 sid = e->session_index;
2063 session = vcl_session_get (wrk, sid);
2066 vcl_fifo_rx_evt_valid_or_break (session);
2067 if (sid < n_bits && read_map)
2069 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2073 case SESSION_IO_EVT_TX:
2074 sid = e->session_index;
2075 session = vcl_session_get (wrk, sid);
2078 if (sid < n_bits && write_map)
2080 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2084 case SESSION_CTRL_EVT_ACCEPTED:
2085 session = vcl_session_accepted (wrk,
2086 (session_accepted_msg_t *) e->data);
2089 sid = session->session_index;
2090 if (sid < n_bits && read_map)
2092 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2096 case SESSION_CTRL_EVT_CONNECTED:
2097 connected_msg = (session_connected_msg_t *) e->data;
2098 sid = vcl_session_connected_handler (wrk, connected_msg);
2099 if (sid == VCL_INVALID_SESSION_INDEX)
2101 if (sid < n_bits && write_map)
2103 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2107 case SESSION_CTRL_EVT_DISCONNECTED:
2108 disconnected_msg = (session_disconnected_msg_t *) e->data;
2109 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2112 sid = session->session_index;
2113 if (sid < n_bits && except_map)
2115 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2119 case SESSION_CTRL_EVT_RESET:
2120 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2121 if (sid < n_bits && except_map)
2123 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2127 case SESSION_CTRL_EVT_UNLISTEN_REPLY:
2128 vcl_session_unlisten_reply_handler (wrk, e->data);
2130 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
2131 vcl_session_worker_update_reply_handler (wrk, e->data);
2133 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
2134 vcl_session_req_worker_update_handler (wrk, e->data);
2136 case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
2137 vcl_session_app_add_segment_handler (wrk, e->data);
2139 case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
2140 vcl_session_app_del_segment_handler (wrk, e->data);
2143 clib_warning ("unhandled: %u", e->event_type);
2149 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2150 unsigned long n_bits, unsigned long *read_map,
2151 unsigned long *write_map, unsigned long *except_map,
2152 double time_to_wait, u32 * bits_set)
2154 svm_msg_q_msg_t *msg;
2158 svm_msg_q_lock (mq);
2159 if (svm_msg_q_is_empty (mq))
2163 svm_msg_q_unlock (mq);
2169 svm_msg_q_unlock (mq);
2172 else if (time_to_wait < 0)
2174 svm_msg_q_wait (mq);
2178 if (svm_msg_q_timedwait (mq, time_to_wait))
2180 svm_msg_q_unlock (mq);
2185 vcl_mq_dequeue_batch (wrk, mq, ~0);
2186 svm_msg_q_unlock (mq);
2188 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2190 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2191 e = svm_msg_q_msg_data (mq, msg);
2192 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
2193 except_map, bits_set);
2194 svm_msg_q_free_msg (mq, msg);
2196 vec_reset_length (wrk->mq_msg_vector);
2197 vcl_handle_pending_wrk_updates (wrk);
2202 vppcom_select_condvar (vcl_worker_t * wrk, int n_bits,
2203 vcl_si_set * read_map, vcl_si_set * write_map,
2204 vcl_si_set * except_map, double time_to_wait,
2207 double wait = 0, start = 0;
2211 wait = time_to_wait;
2212 start = clib_time_now (&wrk->clib_time);
2217 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2218 write_map, except_map, wait, bits_set);
2224 wait = wait - (clib_time_now (&wrk->clib_time) - start);
2232 vppcom_select_eventfd (vcl_worker_t * wrk, int n_bits,
2233 vcl_si_set * read_map, vcl_si_set * write_map,
2234 vcl_si_set * except_map, double time_to_wait,
2237 vcl_mq_evt_conn_t *mqc;
2238 int __clib_unused n_read;
2242 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2243 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2244 vec_len (wrk->mq_events), time_to_wait);
2245 for (i = 0; i < n_mq_evts; i++)
2247 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2248 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2249 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2250 except_map, 0, bits_set);
2253 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2257 vppcom_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map,
2258 vcl_si_set * except_map, double time_to_wait)
2260 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2261 vcl_worker_t *wrk = vcl_worker_get_current ();
2262 vcl_session_t *session = 0;
2265 if (n_bits && read_map)
2267 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2268 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2269 vec_len (wrk->rd_bitmap) * sizeof (vcl_si_set));
2270 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (vcl_si_set));
2272 if (n_bits && write_map)
2274 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2275 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2276 vec_len (wrk->wr_bitmap) * sizeof (vcl_si_set));
2277 memset (write_map, 0, vec_len (wrk->wr_bitmap) * sizeof (vcl_si_set));
2279 if (n_bits && except_map)
2281 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2282 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2283 vec_len (wrk->ex_bitmap) * sizeof (vcl_si_set));
2284 memset (except_map, 0, vec_len (wrk->ex_bitmap) * sizeof (vcl_si_set));
2294 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2295 if (!(session = vcl_session_get (wrk, sid)))
2297 if (except_map && sid < minbits)
2298 clib_bitmap_set_no_check (except_map, sid, 1);
2302 rv = svm_fifo_is_full_prod (session->tx_fifo);
2305 clib_bitmap_set_no_check ((uword*)write_map, sid, 1);
2309 svm_fifo_add_want_deq_ntf (session->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
2316 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2317 if (!(session = vcl_session_get (wrk, sid)))
2319 if (except_map && sid < minbits)
2320 clib_bitmap_set_no_check (except_map, sid, 1);
2324 rv = vcl_session_read_ready (session);
2327 clib_bitmap_set_no_check ((uword*)read_map, sid, 1);
2335 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2337 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2338 read_map, write_map, except_map, &bits_set);
2340 vec_reset_length (wrk->unhandled_evts_vector);
2342 if (vcm->cfg.use_mq_eventfd)
2343 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2344 time_to_wait, &bits_set);
2346 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2347 time_to_wait, &bits_set);
2353 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_handle)
2355 vcl_session_t *session;
2356 vppcom_epoll_t *vep;
2357 u32 sh = vep_handle;
2359 if (VPPCOM_DEBUG <= 2)
2362 session = vcl_session_get_w_handle (wrk, vep_handle);
2363 if (PREDICT_FALSE (!session))
2365 VDBG (0, "ERROR: Invalid vep_sh (%u)!", vep_handle);
2368 if (PREDICT_FALSE (!session->is_vep))
2370 VDBG (0, "ERROR: vep_sh (%u) is not a vep!", vep_handle);
2373 vep = &session->vep;
2374 VDBG (0, "vep_sh (%u): Dumping epoll chain\n"
2377 " is_vep_session = %u\n"
2378 " next_sh = 0x%x (%u)\n"
2379 "}\n", vep_handle, session->is_vep, session->is_vep_session,
2380 vep->next_sh, vep->next_sh);
2382 for (sh = vep->next_sh; sh != ~0; sh = vep->next_sh)
2384 session = vcl_session_get_w_handle (wrk, sh);
2385 if (PREDICT_FALSE (!session))
2387 VDBG (0, "ERROR: Invalid sh (%u)!", sh);
2390 if (PREDICT_FALSE (session->is_vep))
2392 VDBG (0, "ERROR: sh (%u) is a vep!", vep_handle);
2394 else if (PREDICT_FALSE (!session->is_vep_session))
2396 VDBG (0, "ERROR: sh (%u) is not a vep session handle!", sh);
2399 vep = &session->vep;
2400 if (PREDICT_FALSE (vep->vep_sh != vep_handle))
2401 VDBG (0, "ERROR: session (%u) vep_sh (%u) != vep_sh (%u)!",
2402 sh, session->vep.vep_sh, vep_handle);
2403 if (session->is_vep_session)
2405 VDBG (0, "vep_sh[%u]: sh 0x%x (%u)\n"
2407 " next_sh = 0x%x (%u)\n"
2408 " prev_sh = 0x%x (%u)\n"
2409 " vep_sh = 0x%x (%u)\n"
2410 " ev.events = 0x%x\n"
2411 " ev.data.u64 = 0x%llx\n"
2414 vep_handle, sh, sh, vep->next_sh, vep->next_sh, vep->prev_sh,
2415 vep->prev_sh, vep->vep_sh, vep->vep_sh, vep->ev.events,
2416 vep->ev.data.u64, vep->et_mask);
2421 VDBG (0, "vep_sh (%u): Dump complete!\n", vep_handle);
2425 vppcom_epoll_create (void)
2427 vcl_worker_t *wrk = vcl_worker_get_current ();
2428 vcl_session_t *vep_session;
2430 vep_session = vcl_session_alloc (wrk);
2432 vep_session->is_vep = 1;
2433 vep_session->vep.vep_sh = ~0;
2434 vep_session->vep.next_sh = ~0;
2435 vep_session->vep.prev_sh = ~0;
2436 vep_session->vpp_handle = ~0;
2438 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_session->session_index);
2439 VDBG (0, "Created vep_idx %u", vep_session->session_index);
2441 return vcl_session_handle (vep_session);
2445 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2446 struct epoll_event *event)
2448 vcl_worker_t *wrk = vcl_worker_get_current ();
2449 vcl_session_t *vep_session;
2450 vcl_session_t *session;
2453 if (vep_handle == session_handle)
2455 VDBG (0, "vep_sh == session handle (%u)!", vep_handle);
2456 return VPPCOM_EINVAL;
2459 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2460 if (PREDICT_FALSE (!vep_session))
2462 VDBG (0, "Invalid vep_sh (%u)!", vep_handle);
2463 return VPPCOM_EBADFD;
2465 if (PREDICT_FALSE (!vep_session->is_vep))
2467 VDBG (0, "vep_sh (%u) is not a vep!", vep_handle);
2468 return VPPCOM_EINVAL;
2471 ASSERT (vep_session->vep.vep_sh == ~0);
2472 ASSERT (vep_session->vep.prev_sh == ~0);
2474 session = vcl_session_get_w_handle (wrk, session_handle);
2475 if (PREDICT_FALSE (!session))
2477 VDBG (0, "Invalid session_handle (%u)!", session_handle);
2478 return VPPCOM_EBADFD;
2480 if (PREDICT_FALSE (session->is_vep))
2482 VDBG (0, "session_handle (%u) is a vep!", vep_handle);
2483 return VPPCOM_EINVAL;
2489 if (PREDICT_FALSE (!event))
2491 VDBG (0, "EPOLL_CTL_ADD: NULL pointer to epoll_event structure!");
2492 return VPPCOM_EINVAL;
2494 if (vep_session->vep.next_sh != ~0)
2496 vcl_session_t *next_session;
2497 next_session = vcl_session_get_w_handle (wrk,
2498 vep_session->vep.next_sh);
2499 if (PREDICT_FALSE (!next_session))
2501 VDBG (0, "EPOLL_CTL_ADD: Invalid vep.next_sh (%u) on "
2502 "vep_idx (%u)!", vep_session->vep.next_sh, vep_handle);
2503 return VPPCOM_EBADFD;
2505 ASSERT (next_session->vep.prev_sh == vep_handle);
2506 next_session->vep.prev_sh = session_handle;
2508 session->vep.next_sh = vep_session->vep.next_sh;
2509 session->vep.prev_sh = vep_handle;
2510 session->vep.vep_sh = vep_handle;
2511 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2512 session->vep.ev = *event;
2513 session->is_vep = 0;
2514 session->is_vep_session = 1;
2515 vep_session->vep.next_sh = session_handle;
2517 if (session->tx_fifo)
2518 svm_fifo_add_want_deq_ntf (session->tx_fifo,
2519 SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
2521 /* Generate EPOLLOUT when tx_fifo/ct_tx_fifo not full */
2522 if ((event->events & EPOLLOUT) &&
2523 (vcl_session_write_ready (session) > 0))
2525 session_event_t e = { 0 };
2526 e.event_type = SESSION_IO_EVT_TX;
2527 e.session_index = session->session_index;
2528 vec_add1 (wrk->unhandled_evts_vector, e);
2530 VDBG (1, "EPOLL_CTL_ADD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
2531 vep_handle, session_handle, event->events, event->data.u64);
2532 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2536 if (PREDICT_FALSE (!event))
2538 VDBG (0, "EPOLL_CTL_MOD: NULL pointer to epoll_event structure!");
2542 else if (PREDICT_FALSE (!session->is_vep_session))
2544 VDBG (0, "sh %u EPOLL_CTL_MOD: not a vep session!", session_handle);
2548 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2550 VDBG (0, "EPOLL_CTL_MOD: sh %u vep_sh (%u) != vep_sh (%u)!",
2551 session_handle, session->vep.vep_sh, vep_handle);
2556 /* Generate EPOLLOUT when tx_fifo/ct_tx_fifo not full */
2557 if ((event->events & EPOLLOUT) &&
2558 !(session->vep.ev.events & EPOLLOUT) &&
2559 (vcl_session_write_ready (session) > 0))
2561 session_event_t e = { 0 };
2562 e.event_type = SESSION_IO_EVT_TX;
2563 e.session_index = session->session_index;
2564 vec_add1 (wrk->unhandled_evts_vector, e);
2566 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2567 session->vep.ev = *event;
2568 VDBG (1, "EPOLL_CTL_MOD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
2569 vep_handle, session_handle, event->events, event->data.u64);
2573 if (PREDICT_FALSE (!session->is_vep_session))
2575 VDBG (0, "EPOLL_CTL_DEL: %u not a vep session!", session_handle);
2579 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2581 VDBG (0, "EPOLL_CTL_DEL: sh %u vep_sh (%u) != vep_sh (%u)!",
2582 session_handle, session->vep.vep_sh, vep_handle);
2587 if (session->vep.prev_sh == vep_handle)
2588 vep_session->vep.next_sh = session->vep.next_sh;
2591 vcl_session_t *prev_session;
2592 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2593 if (PREDICT_FALSE (!prev_session))
2595 VDBG (0, "EPOLL_CTL_DEL: Invalid prev_sh (%u) on sh (%u)!",
2596 session->vep.prev_sh, session_handle);
2597 return VPPCOM_EBADFD;
2599 ASSERT (prev_session->vep.next_sh == session_handle);
2600 prev_session->vep.next_sh = session->vep.next_sh;
2602 if (session->vep.next_sh != ~0)
2604 vcl_session_t *next_session;
2605 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2606 if (PREDICT_FALSE (!next_session))
2608 VDBG (0, "EPOLL_CTL_DEL: Invalid next_sh (%u) on sh (%u)!",
2609 session->vep.next_sh, session_handle);
2610 return VPPCOM_EBADFD;
2612 ASSERT (next_session->vep.prev_sh == session_handle);
2613 next_session->vep.prev_sh = session->vep.prev_sh;
2616 memset (&session->vep, 0, sizeof (session->vep));
2617 session->vep.next_sh = ~0;
2618 session->vep.prev_sh = ~0;
2619 session->vep.vep_sh = ~0;
2620 session->is_vep_session = 0;
2622 if (session->tx_fifo)
2623 svm_fifo_del_want_deq_ntf (session->tx_fifo, SVM_FIFO_NO_DEQ_NOTIF);
2625 VDBG (1, "EPOLL_CTL_DEL: vep_idx %u, sh %u!", vep_handle,
2627 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2631 VDBG (0, "Invalid operation (%d)!", op);
2635 vep_verify_epoll_chain (wrk, vep_handle);
2642 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2643 struct epoll_event *events, u32 * num_ev)
2645 session_disconnected_msg_t *disconnected_msg;
2646 session_connected_msg_t *connected_msg;
2647 u32 sid = ~0, session_events;
2648 u64 session_evt_data = ~0;
2649 vcl_session_t *session;
2652 switch (e->event_type)
2654 case SESSION_IO_EVT_RX:
2655 sid = e->session_index;
2656 if (!(session = vcl_session_get (wrk, sid)))
2658 vcl_fifo_rx_evt_valid_or_break (session);
2659 session_events = session->vep.ev.events;
2660 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2663 events[*num_ev].events |= EPOLLIN;
2664 session_evt_data = session->vep.ev.data.u64;
2665 session->has_rx_evt = 1;
2667 case SESSION_IO_EVT_TX:
2668 sid = e->session_index;
2669 if (!(session = vcl_session_get (wrk, sid)))
2671 session_events = session->vep.ev.events;
2672 if (!(EPOLLOUT & session_events))
2675 events[*num_ev].events |= EPOLLOUT;
2676 session_evt_data = session->vep.ev.data.u64;
2677 svm_fifo_reset_has_deq_ntf (session->tx_fifo);
2679 case SESSION_CTRL_EVT_ACCEPTED:
2680 session = vcl_session_accepted (wrk,
2681 (session_accepted_msg_t *) e->data);
2685 session_events = session->vep.ev.events;
2686 if (!(EPOLLIN & session_events))
2690 events[*num_ev].events |= EPOLLIN;
2691 session_evt_data = session->vep.ev.data.u64;
2693 case SESSION_CTRL_EVT_CONNECTED:
2694 connected_msg = (session_connected_msg_t *) e->data;
2695 sid = vcl_session_connected_handler (wrk, connected_msg);
2696 /* Generate EPOLLOUT because there's no connected event */
2697 if (!(session = vcl_session_get (wrk, sid)))
2699 session_events = session->vep.ev.events;
2700 if (!(EPOLLOUT & session_events))
2703 events[*num_ev].events |= EPOLLOUT;
2704 session_evt_data = session->vep.ev.data.u64;
2705 if (session->session_state & STATE_FAILED)
2706 events[*num_ev].events |= EPOLLHUP;
2708 case SESSION_CTRL_EVT_DISCONNECTED:
2709 disconnected_msg = (session_disconnected_msg_t *) e->data;
2710 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2713 session_events = session->vep.ev.events;
2714 if (!((EPOLLHUP | EPOLLRDHUP) & session_events))
2717 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2718 session_evt_data = session->vep.ev.data.u64;
2720 case SESSION_CTRL_EVT_RESET:
2721 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2722 if (!(session = vcl_session_get (wrk, sid)))
2724 session_events = session->vep.ev.events;
2725 if (!((EPOLLHUP | EPOLLRDHUP) & session_events))
2728 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2729 session_evt_data = session->vep.ev.data.u64;
2731 case SESSION_CTRL_EVT_UNLISTEN_REPLY:
2732 vcl_session_unlisten_reply_handler (wrk, e->data);
2734 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
2735 vcl_session_req_worker_update_handler (wrk, e->data);
2737 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
2738 vcl_session_worker_update_reply_handler (wrk, e->data);
2740 case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
2741 vcl_session_app_add_segment_handler (wrk, e->data);
2743 case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
2744 vcl_session_app_del_segment_handler (wrk, e->data);
2747 VDBG (0, "unhandled: %u", e->event_type);
2753 events[*num_ev].data.u64 = session_evt_data;
2754 if (EPOLLONESHOT & session_events)
2756 session = vcl_session_get (wrk, sid);
2757 session->vep.ev.events = 0;
2764 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2765 struct epoll_event *events, u32 maxevents,
2766 double wait_for_time, u32 * num_ev)
2768 svm_msg_q_msg_t *msg;
2772 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2773 goto handle_dequeued;
2775 svm_msg_q_lock (mq);
2776 if (svm_msg_q_is_empty (mq))
2780 svm_msg_q_unlock (mq);
2783 else if (wait_for_time < 0)
2785 svm_msg_q_wait (mq);
2789 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2791 svm_msg_q_unlock (mq);
2796 ASSERT (maxevents > *num_ev);
2797 vcl_mq_dequeue_batch (wrk, mq, maxevents - *num_ev);
2798 svm_msg_q_unlock (mq);
2801 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2803 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2804 e = svm_msg_q_msg_data (mq, msg);
2805 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2806 svm_msg_q_free_msg (mq, msg);
2808 vec_reset_length (wrk->mq_msg_vector);
2809 vcl_handle_pending_wrk_updates (wrk);
2814 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2815 int maxevents, u32 n_evts, double wait_for_time)
2817 double wait = 0, start = 0, now;
2821 wait = wait_for_time;
2822 start = clib_time_now (&wrk->clib_time);
2827 vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events, maxevents,
2834 now = clib_time_now (&wrk->clib_time);
2835 wait -= now - start;
2844 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2845 int maxevents, u32 n_evts, double wait_for_time)
2847 vcl_mq_evt_conn_t *mqc;
2848 int __clib_unused n_read;
2852 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2854 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2855 vec_len (wrk->mq_events), wait_for_time);
2856 for (i = 0; i < n_mq_evts; i++)
2858 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2859 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2860 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2862 if (!n_evts && n_mq_evts > 0)
2865 return (int) n_evts;
2869 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2870 int maxevents, double wait_for_time)
2872 vcl_worker_t *wrk = vcl_worker_get_current ();
2873 vcl_session_t *vep_session;
2877 if (PREDICT_FALSE (maxevents <= 0))
2879 VDBG (0, "ERROR: Invalid maxevents (%d)!", maxevents);
2880 return VPPCOM_EINVAL;
2883 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2885 return VPPCOM_EBADFD;
2887 if (PREDICT_FALSE (!vep_session->is_vep))
2889 VDBG (0, "ERROR: vep_idx (%u) is not a vep!", vep_handle);
2890 return VPPCOM_EINVAL;
2893 memset (events, 0, sizeof (*events) * maxevents);
2895 if (vec_len (wrk->unhandled_evts_vector))
2897 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2899 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2901 if (n_evts == maxevents)
2903 vec_delete (wrk->unhandled_evts_vector, i + 1, 0);
2907 vec_reset_length (wrk->unhandled_evts_vector);
2910 if (vcm->cfg.use_mq_eventfd)
2911 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2914 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2919 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2920 void *buffer, uint32_t * buflen)
2922 vcl_worker_t *wrk = vcl_worker_get_current ();
2923 vcl_session_t *session;
2925 u32 *flags = buffer, tmp_flags = 0;
2926 vppcom_endpt_t *ep = buffer;
2928 session = vcl_session_get_w_handle (wrk, session_handle);
2930 return VPPCOM_EBADFD;
2934 case VPPCOM_ATTR_GET_NREAD:
2935 rv = vcl_session_read_ready (session);
2936 VDBG (2, "VPPCOM_ATTR_GET_NREAD: sh %u, nread = %d", session_handle,
2940 case VPPCOM_ATTR_GET_NWRITE:
2941 rv = vcl_session_write_ready (session);
2942 VDBG (2, "VPPCOM_ATTR_GET_NWRITE: sh %u, nwrite = %d", session_handle,
2946 case VPPCOM_ATTR_GET_FLAGS:
2947 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2949 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2950 VCL_SESS_ATTR_NONBLOCK));
2951 *buflen = sizeof (*flags);
2952 VDBG (2, "VPPCOM_ATTR_GET_FLAGS: sh %u, flags = 0x%08x, "
2953 "is_nonblocking = %u", session_handle, *flags,
2954 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2960 case VPPCOM_ATTR_SET_FLAGS:
2961 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2963 if (*flags & O_NONBLOCK)
2964 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2966 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2968 VDBG (2, "VPPCOM_ATTR_SET_FLAGS: sh %u, flags = 0x%08x,"
2969 " is_nonblocking = %u", session_handle, *flags,
2970 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2976 case VPPCOM_ATTR_GET_PEER_ADDR:
2977 if (PREDICT_TRUE (buffer && buflen &&
2978 (*buflen >= sizeof (*ep)) && ep->ip))
2980 ep->is_ip4 = session->transport.is_ip4;
2981 ep->port = session->transport.rmt_port;
2982 if (session->transport.is_ip4)
2983 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2984 sizeof (ip4_address_t));
2986 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2987 sizeof (ip6_address_t));
2988 *buflen = sizeof (*ep);
2989 VDBG (1, "VPPCOM_ATTR_GET_PEER_ADDR: sh %u, is_ip4 = %u, "
2990 "addr = %U, port %u", session_handle, ep->is_ip4,
2991 format_ip46_address, &session->transport.rmt_ip,
2992 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2993 clib_net_to_host_u16 (ep->port));
2999 case VPPCOM_ATTR_GET_LCL_ADDR:
3000 if (PREDICT_TRUE (buffer && buflen &&
3001 (*buflen >= sizeof (*ep)) && ep->ip))
3003 ep->is_ip4 = session->transport.is_ip4;
3004 ep->port = session->transport.lcl_port;
3005 if (session->transport.is_ip4)
3006 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
3007 sizeof (ip4_address_t));
3009 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
3010 sizeof (ip6_address_t));
3011 *buflen = sizeof (*ep);
3012 VDBG (1, "VPPCOM_ATTR_GET_LCL_ADDR: sh %u, is_ip4 = %u, addr = %U"
3013 " port %d", session_handle, ep->is_ip4, format_ip46_address,
3014 &session->transport.lcl_ip,
3015 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3016 clib_net_to_host_u16 (ep->port));
3022 case VPPCOM_ATTR_SET_LCL_ADDR:
3023 if (PREDICT_TRUE (buffer && buflen &&
3024 (*buflen >= sizeof (*ep)) && ep->ip))
3026 session->transport.is_ip4 = ep->is_ip4;
3027 session->transport.lcl_port = ep->port;
3028 vcl_ip_copy_from_ep (&session->transport.lcl_ip, ep);
3029 *buflen = sizeof (*ep);
3030 VDBG (1, "VPPCOM_ATTR_SET_LCL_ADDR: sh %u, is_ip4 = %u, addr = %U"
3031 " port %d", session_handle, ep->is_ip4, format_ip46_address,
3032 &session->transport.lcl_ip,
3033 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3034 clib_net_to_host_u16 (ep->port));
3040 case VPPCOM_ATTR_GET_LIBC_EPFD:
3041 rv = session->libc_epfd;
3042 VDBG (2, "VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d", rv);
3045 case VPPCOM_ATTR_SET_LIBC_EPFD:
3046 if (PREDICT_TRUE (buffer && buflen &&
3047 (*buflen == sizeof (session->libc_epfd))))
3049 session->libc_epfd = *(int *) buffer;
3050 *buflen = sizeof (session->libc_epfd);
3052 VDBG (2, "VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, buflen %d",
3053 session->libc_epfd, *buflen);
3059 case VPPCOM_ATTR_GET_PROTOCOL:
3060 if (buffer && buflen && (*buflen >= sizeof (int)))
3062 *(int *) buffer = session->session_type;
3063 *buflen = sizeof (int);
3065 VDBG (2, "VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
3066 *(int *) buffer, *(int *) buffer ? "UDP" : "TCP", *buflen);
3072 case VPPCOM_ATTR_GET_LISTEN:
3073 if (buffer && buflen && (*buflen >= sizeof (int)))
3075 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3076 VCL_SESS_ATTR_LISTEN);
3077 *buflen = sizeof (int);
3079 VDBG (2, "VPPCOM_ATTR_GET_LISTEN: %d, buflen %d", *(int *) buffer,
3086 case VPPCOM_ATTR_GET_ERROR:
3087 if (buffer && buflen && (*buflen >= sizeof (int)))
3089 *(int *) buffer = 0;
3090 *buflen = sizeof (int);
3092 VDBG (2, "VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
3093 *(int *) buffer, *buflen);
3099 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
3100 if (buffer && buflen && (*buflen >= sizeof (u32)))
3104 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
3105 session->tx_fifo ? session->tx_fifo->nitems :
3106 vcm->cfg.tx_fifo_size);
3107 *buflen = sizeof (u32);
3109 VDBG (2, "VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), buflen %d,"
3110 " #VPP-TBD#", *(size_t *) buffer, *(size_t *) buffer,
3117 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
3118 if (buffer && buflen && (*buflen == sizeof (u32)))
3121 session->sndbuf_size = *(u32 *) buffer;
3122 VDBG (2, "VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), buflen %d,"
3123 " #VPP-TBD#", session->sndbuf_size, session->sndbuf_size,
3130 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
3131 if (buffer && buflen && (*buflen >= sizeof (u32)))
3135 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
3136 session->rx_fifo ? session->rx_fifo->nitems :
3137 vcm->cfg.rx_fifo_size);
3138 *buflen = sizeof (u32);
3140 VDBG (2, "VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), buflen %d, "
3141 "#VPP-TBD#", *(size_t *) buffer, *(size_t *) buffer, *buflen);
3147 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
3148 if (buffer && buflen && (*buflen == sizeof (u32)))
3151 session->rcvbuf_size = *(u32 *) buffer;
3152 VDBG (2, "VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), buflen %d,"
3153 " #VPP-TBD#", session->sndbuf_size, session->sndbuf_size,
3160 case VPPCOM_ATTR_GET_REUSEADDR:
3161 if (buffer && buflen && (*buflen >= sizeof (int)))
3164 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3165 VCL_SESS_ATTR_REUSEADDR);
3166 *buflen = sizeof (int);
3168 VDBG (2, "VPPCOM_ATTR_GET_REUSEADDR: %d, buflen %d, #VPP-TBD#",
3169 *(int *) buffer, *buflen);
3175 case VPPCOM_ATTR_SET_REUSEADDR:
3176 if (buffer && buflen && (*buflen == sizeof (int)) &&
3177 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3180 if (*(int *) buffer)
3181 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
3183 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
3185 VDBG (2, "VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d, #VPP-TBD#",
3186 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_REUSEADDR),
3193 case VPPCOM_ATTR_GET_REUSEPORT:
3194 if (buffer && buflen && (*buflen >= sizeof (int)))
3197 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3198 VCL_SESS_ATTR_REUSEPORT);
3199 *buflen = sizeof (int);
3201 VDBG (2, "VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d, #VPP-TBD#",
3202 *(int *) buffer, *buflen);
3208 case VPPCOM_ATTR_SET_REUSEPORT:
3209 if (buffer && buflen && (*buflen == sizeof (int)) &&
3210 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3213 if (*(int *) buffer)
3214 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
3216 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
3218 VDBG (2, "VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d, #VPP-TBD#",
3219 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_REUSEPORT),
3226 case VPPCOM_ATTR_GET_BROADCAST:
3227 if (buffer && buflen && (*buflen >= sizeof (int)))
3230 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3231 VCL_SESS_ATTR_BROADCAST);
3232 *buflen = sizeof (int);
3234 VDBG (2, "VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d, #VPP-TBD#",
3235 *(int *) buffer, *buflen);
3241 case VPPCOM_ATTR_SET_BROADCAST:
3242 if (buffer && buflen && (*buflen == sizeof (int)))
3245 if (*(int *) buffer)
3246 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
3248 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
3250 VDBG (2, "VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, #VPP-TBD#",
3251 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_BROADCAST),
3258 case VPPCOM_ATTR_GET_V6ONLY:
3259 if (buffer && buflen && (*buflen >= sizeof (int)))
3262 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3263 VCL_SESS_ATTR_V6ONLY);
3264 *buflen = sizeof (int);
3266 VDBG (2, "VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, #VPP-TBD#",
3267 *(int *) buffer, *buflen);
3273 case VPPCOM_ATTR_SET_V6ONLY:
3274 if (buffer && buflen && (*buflen == sizeof (int)))
3277 if (*(int *) buffer)
3278 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3280 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3282 VDBG (2, "VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, #VPP-TBD#",
3283 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_V6ONLY),
3290 case VPPCOM_ATTR_GET_KEEPALIVE:
3291 if (buffer && buflen && (*buflen >= sizeof (int)))
3294 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3295 VCL_SESS_ATTR_KEEPALIVE);
3296 *buflen = sizeof (int);
3298 VDBG (2, "VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, #VPP-TBD#",
3299 *(int *) buffer, *buflen);
3305 case VPPCOM_ATTR_SET_KEEPALIVE:
3306 if (buffer && buflen && (*buflen == sizeof (int)))
3309 if (*(int *) buffer)
3310 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3312 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3314 VDBG (2, "VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, #VPP-TBD#",
3315 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_KEEPALIVE),
3322 case VPPCOM_ATTR_GET_TCP_NODELAY:
3323 if (buffer && buflen && (*buflen >= sizeof (int)))
3326 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3327 VCL_SESS_ATTR_TCP_NODELAY);
3328 *buflen = sizeof (int);
3330 VDBG (2, "VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#",
3331 *(int *) buffer, *buflen);
3337 case VPPCOM_ATTR_SET_TCP_NODELAY:
3338 if (buffer && buflen && (*buflen == sizeof (int)))
3341 if (*(int *) buffer)
3342 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3344 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3346 VDBG (2, "VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#",
3347 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_TCP_NODELAY),
3354 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3355 if (buffer && buflen && (*buflen >= sizeof (int)))
3358 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3359 VCL_SESS_ATTR_TCP_KEEPIDLE);
3360 *buflen = sizeof (int);
3362 VDBG (2, "VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#",
3363 *(int *) buffer, *buflen);
3369 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3370 if (buffer && buflen && (*buflen == sizeof (int)))
3373 if (*(int *) buffer)
3374 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3376 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3378 VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#",
3379 VCL_SESS_ATTR_TEST (session->attr,
3380 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3386 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3387 if (buffer && buflen && (*buflen >= sizeof (int)))
3390 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3391 VCL_SESS_ATTR_TCP_KEEPINTVL);
3392 *buflen = sizeof (int);
3394 VDBG (2, "VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#",
3395 *(int *) buffer, *buflen);
3401 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3402 if (buffer && buflen && (*buflen == sizeof (int)))
3405 if (*(int *) buffer)
3406 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3408 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3410 VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#",
3411 VCL_SESS_ATTR_TEST (session->attr,
3412 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3418 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3419 if (buffer && buflen && (*buflen >= sizeof (u32)))
3422 *(u32 *) buffer = session->user_mss;
3423 *buflen = sizeof (int);
3425 VDBG (2, "VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d, #VPP-TBD#",
3426 *(int *) buffer, *buflen);
3432 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3433 if (buffer && buflen && (*buflen == sizeof (u32)))
3436 session->user_mss = *(u32 *) buffer;
3438 VDBG (2, "VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, #VPP-TBD#",
3439 session->user_mss, *buflen);
3445 case VPPCOM_ATTR_SET_SHUT:
3446 if (*flags == SHUT_RD || *flags == SHUT_RDWR)
3447 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_SHUT_RD);
3448 if (*flags == SHUT_WR || *flags == SHUT_RDWR)
3449 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_SHUT_WR);
3452 case VPPCOM_ATTR_GET_SHUT:
3453 if (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_SHUT_RD))
3455 if (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_SHUT_WR))
3458 *(int *) buffer = SHUT_RD;
3459 else if (tmp_flags == 2)
3460 *(int *) buffer = SHUT_WR;
3461 else if (tmp_flags == 3)
3462 *(int *) buffer = SHUT_RDWR;
3463 *buflen = sizeof (int);
3474 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3475 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3477 vcl_worker_t *wrk = vcl_worker_get_current ();
3479 vcl_session_t *session = 0;
3483 session = vcl_session_get_w_handle (wrk, session_handle);
3484 if (PREDICT_FALSE (!session))
3486 VDBG (0, "sh 0x%llx is closed!", session_handle);
3487 return VPPCOM_EBADFD;
3489 ep->is_ip4 = session->transport.is_ip4;
3490 ep->port = session->transport.rmt_port;
3494 rv = vppcom_session_read (session_handle, buffer, buflen);
3495 else if (flags & MSG_PEEK)
3496 rv = vppcom_session_peek (session_handle, buffer, buflen);
3499 VDBG (0, "Unsupport flags for recvfrom %d", flags);
3500 return VPPCOM_EAFNOSUPPORT;
3505 if (session->transport.is_ip4)
3506 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3507 sizeof (ip4_address_t));
3509 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3510 sizeof (ip6_address_t));
3517 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3518 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3521 return VPPCOM_EINVAL;
3526 return VPPCOM_EINVAL;
3531 // TBD check the flags and do the right thing
3532 VDBG (2, "handling flags 0x%u (%d) not implemented yet.", flags, flags);
3535 return (vppcom_session_write_inline (session_handle, buffer, buflen, 1));
3539 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3541 vcl_worker_t *wrk = vcl_worker_get_current ();
3542 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3543 u32 i, keep_trying = 1;
3544 svm_msg_q_msg_t msg;
3548 VDBG (3, "vp %p, nsids %u, wait_for_time %f", vp, n_sids, wait_for_time);
3551 return VPPCOM_EFAULT;
3555 vcl_session_t *session;
3557 /* Dequeue all events and drop all unhandled io events */
3558 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3560 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3561 vcl_handle_mq_event (wrk, e);
3562 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3564 vec_reset_length (wrk->unhandled_evts_vector);
3566 for (i = 0; i < n_sids; i++)
3568 session = vcl_session_get (wrk, vp[i].sh);
3571 vp[i].revents = POLLHUP;
3578 if (POLLIN & vp[i].events)
3580 rv = vcl_session_read_ready (session);
3583 vp[i].revents |= POLLIN;
3590 case VPPCOM_ECONNRESET:
3591 vp[i].revents = POLLHUP;
3595 vp[i].revents = POLLERR;
3602 if (POLLOUT & vp[i].events)
3604 rv = vcl_session_write_ready (session);
3607 vp[i].revents |= POLLOUT;
3614 case VPPCOM_ECONNRESET:
3615 vp[i].revents = POLLHUP;
3619 vp[i].revents = POLLERR;
3626 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3628 vp[i].revents = POLLNVAL;
3632 if (wait_for_time != -1)
3633 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3635 while ((num_ev == 0) && keep_trying);
3641 vppcom_mq_epoll_fd (void)
3643 vcl_worker_t *wrk = vcl_worker_get_current ();
3644 return wrk->mqs_epfd;
3648 vppcom_session_index (vcl_session_handle_t session_handle)
3650 return session_handle & 0xFFFFFF;
3654 vppcom_session_worker (vcl_session_handle_t session_handle)
3656 return session_handle >> 24;
3660 vppcom_worker_register (void)
3666 if (!vcl_worker_alloc_and_init ())
3667 return VPPCOM_EEXIST;
3669 wrk = vcl_worker_get_current ();
3670 wrk_name = format (0, "%s-wrk-%u", vcm->app_name, wrk->wrk_index);
3672 rv = vppcom_connect_to_vpp ((char *) wrk_name);
3673 vec_free (wrk_name);
3676 return VPPCOM_EFAULT;
3678 if (vcl_worker_register_with_vpp ())
3679 return VPPCOM_EEXIST;
3685 vppcom_worker_unregister (void)
3687 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
3688 vcl_set_worker_index (~0);
3692 vppcom_worker_index (void)
3694 return vcl_get_worker_index ();
3698 vppcom_worker_mqs_epfd (void)
3700 vcl_worker_t *wrk = vcl_worker_get_current ();
3701 if (!vcm->cfg.use_mq_eventfd)
3703 return wrk->mqs_epfd;
3707 vppcom_session_is_connectable_listener (uint32_t session_handle)
3709 vcl_session_t *session;
3710 vcl_worker_t *wrk = vcl_worker_get_current ();
3711 session = vcl_session_get_w_handle (wrk, session_handle);
3713 return VPPCOM_EBADFD;
3714 return vcl_session_is_connectable_listener (wrk, session);
3718 vppcom_session_listener (uint32_t session_handle)
3720 vcl_worker_t *wrk = vcl_worker_get_current ();
3721 vcl_session_t *listen_session, *session;
3722 session = vcl_session_get_w_handle (wrk, session_handle);
3724 return VPPCOM_EBADFD;
3725 if (session->listener_index == VCL_INVALID_SESSION_INDEX)
3726 return VPPCOM_EBADFD;
3727 listen_session = vcl_session_get_w_handle (wrk, session->listener_index);
3728 if (!listen_session)
3729 return VPPCOM_EBADFD;
3730 return vcl_session_handle (listen_session);
3734 vppcom_session_n_accepted (uint32_t session_handle)
3736 vcl_worker_t *wrk = vcl_worker_get_current ();
3737 vcl_session_t *session = vcl_session_get_w_handle (wrk, session_handle);
3739 return VPPCOM_EBADFD;
3740 return session->n_accepted_sessions;
3744 * fd.io coding-style-patch-verification: ON
3747 * eval: (c-set-style "gnu")