2 * Copyright (c) 2017 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 <svm/svm_fifo_segment.h>
19 #include <vcl/vppcom.h>
20 #include <vcl/vcl_debug.h>
21 #include <vcl/vcl_private.h>
23 __thread uword __vcl_worker_index = ~0;
26 vcl_wait_for_segment (u64 segment_handle)
28 vcl_worker_t *wrk = vcl_worker_get_current ();
29 u32 wait_for_seconds = 10, segment_index;
32 if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
35 timeout = clib_time_now (&wrk->clib_time) + wait_for_seconds;
36 while (clib_time_now (&wrk->clib_time) < timeout)
38 segment_index = vcl_segment_table_lookup (segment_handle);
39 if (segment_index != VCL_INVALID_SEGMENT_INDEX)
47 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
53 n_msgs = svm_msg_q_size (mq);
54 for (i = 0; i < n_msgs; i++)
56 vec_add2 (wrk->mq_msg_vector, msg, 1);
57 svm_msg_q_sub_w_lock (mq, msg);
63 vppcom_session_state_str (session_state_t state)
85 case STATE_VPP_CLOSING:
86 st = "STATE_VPP_CLOSING";
89 case STATE_DISCONNECT:
90 st = "STATE_DISCONNECT";
106 format_ip4_address (u8 * s, va_list * args)
108 u8 *a = va_arg (*args, u8 *);
109 return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
113 format_ip6_address (u8 * s, va_list * args)
115 ip6_address_t *a = va_arg (*args, ip6_address_t *);
116 u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon;
118 i_max_n_zero = ARRAY_LEN (a->as_u16);
120 i_first_zero = i_max_n_zero;
122 for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
124 u32 is_zero = a->as_u16[i] == 0;
125 if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16))
131 if ((!is_zero && n_zeros > max_n_zeros)
132 || (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros))
134 i_max_n_zero = i_first_zero;
135 max_n_zeros = n_zeros;
136 i_first_zero = ARRAY_LEN (a->as_u16);
141 last_double_colon = 0;
142 for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
144 if (i == i_max_n_zero && max_n_zeros > 1)
146 s = format (s, "::");
147 i += max_n_zeros - 1;
148 last_double_colon = 1;
152 s = format (s, "%s%x",
153 (last_double_colon || i == 0) ? "" : ":",
154 clib_net_to_host_u16 (a->as_u16[i]));
155 last_double_colon = 0;
162 /* Format an IP46 address. */
164 format_ip46_address (u8 * s, va_list * args)
166 ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
167 ip46_type_t type = va_arg (*args, ip46_type_t);
173 is_ip4 = ip46_address_is_ip4 (ip46);
184 format (s, "%U", format_ip4_address, &ip46->ip4) :
185 format (s, "%U", format_ip6_address, &ip46->ip6);
189 * VPPCOM Utility Functions
194 vcl_send_session_accepted_reply (svm_msg_q_t * mq, u32 context,
195 session_handle_t handle, int retval)
197 app_session_evt_t _app_evt, *app_evt = &_app_evt;
198 session_accepted_reply_msg_t *rmp;
199 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_ACCEPTED_REPLY);
200 rmp = (session_accepted_reply_msg_t *) app_evt->evt->data;
201 rmp->handle = handle;
202 rmp->context = context;
203 rmp->retval = retval;
204 app_send_ctrl_evt_to_vpp (mq, app_evt);
208 vcl_send_session_disconnected_reply (svm_msg_q_t * mq, u32 context,
209 session_handle_t handle, int retval)
211 app_session_evt_t _app_evt, *app_evt = &_app_evt;
212 session_disconnected_reply_msg_t *rmp;
213 app_alloc_ctrl_evt_to_vpp (mq, app_evt,
214 SESSION_CTRL_EVT_DISCONNECTED_REPLY);
215 rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
216 rmp->handle = handle;
217 rmp->context = context;
218 rmp->retval = retval;
219 app_send_ctrl_evt_to_vpp (mq, app_evt);
223 vcl_send_session_reset_reply (svm_msg_q_t * mq, u32 context,
224 session_handle_t handle, int retval)
226 app_session_evt_t _app_evt, *app_evt = &_app_evt;
227 session_reset_reply_msg_t *rmp;
228 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_RESET_REPLY);
229 rmp = (session_reset_reply_msg_t *) app_evt->evt->data;
230 rmp->handle = handle;
231 rmp->context = context;
232 rmp->retval = retval;
233 app_send_ctrl_evt_to_vpp (mq, app_evt);
237 vcl_send_session_worker_update (vcl_worker_t * wrk, vcl_session_t * s,
240 app_session_evt_t _app_evt, *app_evt = &_app_evt;
241 session_worker_update_msg_t *mp;
244 mq = vcl_session_vpp_evt_q (wrk, s);
245 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_WORKER_UPDATE);
246 mp = (session_worker_update_msg_t *) app_evt->evt->data;
247 mp->client_index = wrk->my_client_index;
248 mp->handle = s->vpp_handle;
249 mp->req_wrk_index = wrk->vpp_wrk_index;
250 mp->wrk_index = wrk_index;
251 app_send_ctrl_evt_to_vpp (mq, app_evt);
255 vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp)
257 vcl_session_t *session, *listen_session;
258 svm_fifo_t *rx_fifo, *tx_fifo;
262 session = vcl_session_alloc (wrk);
264 listen_session = vcl_session_table_lookup_listener (wrk,
265 mp->listener_handle);
269 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
270 clib_warning ("VCL<%d>: ERROR: couldn't find listen session: "
271 "unknown vpp listener handle %llx",
272 getpid (), mp->listener_handle);
273 vcl_send_session_accepted_reply (evt_q, mp->context, mp->handle,
274 VNET_API_ERROR_INVALID_ARGUMENT);
275 vcl_session_free (wrk, session);
276 return VCL_INVALID_SESSION_INDEX;
279 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
280 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
282 if (mp->server_event_queue_address)
284 session->vpp_evt_q = uword_to_pointer (mp->client_event_queue_address,
286 session->our_evt_q = uword_to_pointer (mp->server_event_queue_address,
288 if (vcl_wait_for_segment (mp->segment_handle))
290 clib_warning ("segment for session %u couldn't be mounted!",
291 session->session_index);
292 return VCL_INVALID_SESSION_INDEX;
294 rx_fifo->master_session_index = session->session_index;
295 tx_fifo->master_session_index = session->session_index;
296 rx_fifo->master_thread_index = vcl_get_worker_index ();
297 tx_fifo->master_thread_index = vcl_get_worker_index ();
298 vec_validate (wrk->vpp_event_queues, 0);
299 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
300 wrk->vpp_event_queues[0] = evt_q;
304 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
306 rx_fifo->client_session_index = session->session_index;
307 tx_fifo->client_session_index = session->session_index;
308 rx_fifo->client_thread_index = vcl_get_worker_index ();
309 tx_fifo->client_thread_index = vcl_get_worker_index ();
310 vpp_wrk_index = tx_fifo->master_thread_index;
311 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
312 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
315 session->vpp_handle = mp->handle;
316 session->vpp_thread_index = rx_fifo->master_thread_index;
317 session->client_context = mp->context;
318 session->rx_fifo = rx_fifo;
319 session->tx_fifo = tx_fifo;
321 session->session_state = STATE_ACCEPT;
322 session->transport.rmt_port = mp->port;
323 session->transport.is_ip4 = mp->is_ip4;
324 clib_memcpy_fast (&session->transport.rmt_ip, mp->ip,
325 sizeof (ip46_address_t));
327 vcl_session_table_add_vpp_handle (wrk, mp->handle, session->session_index);
328 session->transport.lcl_port = listen_session->transport.lcl_port;
329 session->transport.lcl_ip = listen_session->transport.lcl_ip;
330 session->session_type = listen_session->session_type;
331 session->is_dgram = session->session_type == VPPCOM_PROTO_UDP;
333 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: client accept request from %s"
334 " address %U port %d queue %p!", getpid (), mp->handle,
335 session->session_index,
336 mp->is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &mp->ip,
337 mp->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
338 clib_net_to_host_u16 (mp->port), session->vpp_evt_q);
339 vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index);
341 return session->session_index;
345 vcl_session_connected_handler (vcl_worker_t * wrk,
346 session_connected_msg_t * mp)
348 u32 session_index, vpp_wrk_index;
349 svm_fifo_t *rx_fifo, *tx_fifo;
350 vcl_session_t *session = 0;
353 session_index = mp->context;
354 session = vcl_session_get (wrk, session_index);
357 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
358 "Invalid session index (%u)!",
359 getpid (), mp->handle, session_index);
360 return VCL_INVALID_SESSION_INDEX;
364 clib_warning ("VCL<%d>: ERROR: sid %u: connect failed! %U", getpid (),
365 session_index, format_api_error, ntohl (mp->retval));
366 session->session_state = STATE_FAILED;
367 session->vpp_handle = mp->handle;
368 return session_index;
371 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
372 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
373 if (vcl_wait_for_segment (mp->segment_handle))
375 clib_warning ("segment for session %u couldn't be mounted!",
376 session->session_index);
377 return VCL_INVALID_SESSION_INDEX;
380 rx_fifo->client_session_index = session_index;
381 tx_fifo->client_session_index = session_index;
382 rx_fifo->client_thread_index = vcl_get_worker_index ();
383 tx_fifo->client_thread_index = vcl_get_worker_index ();
385 if (mp->client_event_queue_address)
387 session->vpp_evt_q = uword_to_pointer (mp->server_event_queue_address,
389 session->our_evt_q = uword_to_pointer (mp->client_event_queue_address,
392 vec_validate (wrk->vpp_event_queues, 0);
393 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
394 wrk->vpp_event_queues[0] = evt_q;
398 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
400 vpp_wrk_index = tx_fifo->master_thread_index;
401 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
402 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
405 session->rx_fifo = rx_fifo;
406 session->tx_fifo = tx_fifo;
407 session->vpp_handle = mp->handle;
408 session->vpp_thread_index = rx_fifo->master_thread_index;
409 session->transport.is_ip4 = mp->is_ip4;
410 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
411 sizeof (session->transport.lcl_ip));
412 session->transport.lcl_port = mp->lcl_port;
413 session->session_state = STATE_CONNECT;
415 /* Add it to lookup table */
416 vcl_session_table_add_vpp_handle (wrk, mp->handle, session_index);
418 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: connect succeeded! "
419 "session_rx_fifo %p, refcnt %d, session_tx_fifo %p, refcnt %d",
420 getpid (), mp->handle, session_index, session->rx_fifo,
421 session->rx_fifo->refcnt, session->tx_fifo, session->tx_fifo->refcnt);
423 return session_index;
427 vcl_flag_accepted_session (vcl_session_t * session, u64 handle, u32 flags)
429 vcl_session_msg_t *accepted_msg;
432 for (i = 0; i < vec_len (session->accept_evts_fifo); i++)
434 accepted_msg = &session->accept_evts_fifo[i];
435 if (accepted_msg->accepted_msg.handle == handle)
437 accepted_msg->flags |= flags;
445 vcl_session_reset_handler (vcl_worker_t * wrk,
446 session_reset_msg_t * reset_msg)
448 vcl_session_t *session;
451 sid = vcl_session_index_from_vpp_handle (wrk, reset_msg->handle);
452 session = vcl_session_get (wrk, sid);
455 VDBG (0, "request to reset unknown handle 0x%llx", reset_msg->handle);
456 return VCL_INVALID_SESSION_INDEX;
459 /* Caught a reset before actually accepting the session */
460 if (session->session_state == STATE_LISTEN)
463 if (!vcl_flag_accepted_session (session, reset_msg->handle,
464 VCL_ACCEPTED_F_RESET))
465 VDBG (0, "session was not accepted!");
466 return VCL_INVALID_SESSION_INDEX;
469 session->session_state = STATE_DISCONNECT;
470 VDBG (0, "reset session %u [0x%llx]", sid, reset_msg->handle);
475 vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp)
477 vcl_session_t *session;
478 u32 sid = mp->context;
480 session = vcl_session_get (wrk, sid);
483 VERR ("vpp handle 0x%llx, sid %u: bind failed: %U", mp->handle, sid,
484 format_api_error, mp->retval);
487 session->session_state = STATE_FAILED;
488 session->vpp_handle = mp->handle;
493 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
494 "Invalid session index (%u)!",
495 getpid (), mp->handle, sid);
496 return VCL_INVALID_SESSION_INDEX;
500 session->vpp_handle = mp->handle;
501 session->transport.is_ip4 = mp->lcl_is_ip4;
502 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
503 sizeof (ip46_address_t));
504 session->transport.lcl_port = mp->lcl_port;
505 vcl_session_table_add_listener (wrk, mp->handle, sid);
506 session->session_state = STATE_LISTEN;
508 if (session->is_dgram)
510 svm_fifo_t *rx_fifo, *tx_fifo;
511 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
512 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
513 rx_fifo->client_session_index = sid;
514 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
515 tx_fifo->client_session_index = sid;
516 session->rx_fifo = rx_fifo;
517 session->tx_fifo = tx_fifo;
520 VDBG (0, "session %u [0x%llx]: listen succeeded!", sid, mp->handle);
524 static vcl_session_t *
525 vcl_session_accepted (vcl_worker_t * wrk, session_accepted_msg_t * msg)
527 vcl_session_msg_t *vcl_msg;
528 vcl_session_t *session;
530 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
531 if (PREDICT_FALSE (session != 0))
532 VWRN ("session overlap handle %lu state %u!", msg->handle,
533 session->session_state);
535 session = vcl_session_table_lookup_listener (wrk, msg->listener_handle);
538 VERR ("couldn't find listen session: listener handle %llx",
539 msg->listener_handle);
543 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
544 vcl_msg->accepted_msg = *msg;
545 /* Session handle points to listener until fully accepted by app */
546 vcl_session_table_add_vpp_handle (wrk, msg->handle, session->session_index);
551 static vcl_session_t *
552 vcl_session_disconnected_handler (vcl_worker_t * wrk,
553 session_disconnected_msg_t * msg)
555 vcl_session_t *session;
557 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
560 VDBG (0, "request to disconnect unknown handle 0x%llx", msg->handle);
564 /* Caught a disconnect before actually accepting the session */
565 if (session->session_state == STATE_LISTEN)
567 if (!vcl_flag_accepted_session (session, msg->handle,
568 VCL_ACCEPTED_F_CLOSED))
569 VDBG (0, "session was not accepted!");
573 session->session_state = STATE_VPP_CLOSING;
578 vcl_session_req_worker_update_handler (vcl_worker_t * wrk, void *data)
580 session_req_worker_update_msg_t *msg;
583 msg = (session_req_worker_update_msg_t *) data;
584 s = vcl_session_get_w_vpp_handle (wrk, msg->session_handle);
588 vec_add1 (wrk->pending_session_wrk_updates, s->session_index);
592 vcl_session_worker_update_reply_handler (vcl_worker_t * wrk, void *data)
594 session_worker_update_reply_msg_t *msg;
597 msg = (session_worker_update_reply_msg_t *) data;
598 s = vcl_session_get_w_vpp_handle (wrk, msg->handle);
601 VDBG (0, "unknown handle 0x%llx", msg->handle);
604 if (vcl_wait_for_segment (msg->segment_handle))
606 clib_warning ("segment for session %u couldn't be mounted!",
610 s->rx_fifo = uword_to_pointer (msg->rx_fifo, svm_fifo_t *);
611 s->tx_fifo = uword_to_pointer (msg->tx_fifo, svm_fifo_t *);
613 s->rx_fifo->client_session_index = s->session_index;
614 s->tx_fifo->client_session_index = s->session_index;
615 s->rx_fifo->client_thread_index = wrk->wrk_index;
616 s->tx_fifo->client_thread_index = wrk->wrk_index;
617 s->session_state = STATE_UPDATED;
619 if (s->shared_index != VCL_INVALID_SESSION_INDEX)
621 vcl_shared_session_t *ss;
622 ss = vcl_shared_session_get (s->shared_index);
623 if (vec_len (ss->workers) > 1)
624 VDBG (0, "workers need to be updated");
626 VDBG (0, "session %u[0x%llx] moved to worker %u", s->session_index,
627 s->vpp_handle, wrk->wrk_index);
631 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
633 session_disconnected_msg_t *disconnected_msg;
634 vcl_session_t *session;
636 switch (e->event_type)
638 case FIFO_EVENT_APP_RX:
639 case FIFO_EVENT_APP_TX:
640 case SESSION_IO_EVT_CT_RX:
641 case SESSION_IO_EVT_CT_TX:
642 vec_add1 (wrk->unhandled_evts_vector, *e);
644 case SESSION_CTRL_EVT_ACCEPTED:
645 vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
647 case SESSION_CTRL_EVT_CONNECTED:
648 vcl_session_connected_handler (wrk,
649 (session_connected_msg_t *) e->data);
651 case SESSION_CTRL_EVT_DISCONNECTED:
652 disconnected_msg = (session_disconnected_msg_t *) e->data;
653 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
656 session->session_state = STATE_DISCONNECT;
657 VDBG (0, "disconnected session %u [0x%llx]", session->session_index,
658 session->vpp_handle);
660 case SESSION_CTRL_EVT_RESET:
661 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
663 case SESSION_CTRL_EVT_BOUND:
664 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
666 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
667 vcl_session_req_worker_update_handler (wrk, e->data);
669 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
670 vcl_session_worker_update_reply_handler (wrk, e->data);
673 clib_warning ("unhandled %u", e->event_type);
679 vppcom_wait_for_session_state_change (u32 session_index,
680 session_state_t state,
683 vcl_worker_t *wrk = vcl_worker_get_current ();
684 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
685 vcl_session_t *volatile session;
691 session = vcl_session_get (wrk, session_index);
692 if (PREDICT_FALSE (!session))
694 return VPPCOM_EBADFD;
696 if (session->session_state & state)
700 if (session->session_state & STATE_FAILED)
702 return VPPCOM_ECONNREFUSED;
705 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
710 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
711 vcl_handle_mq_event (wrk, e);
712 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
714 while (clib_time_now (&wrk->clib_time) < timeout);
716 VDBG (0, "timeout waiting for state 0x%x (%s)", state,
717 vppcom_session_state_str (state));
718 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
720 return VPPCOM_ETIMEDOUT;
724 vcl_handle_pending_wrk_updates (vcl_worker_t * wrk)
726 session_state_t state;
730 if (PREDICT_TRUE (vec_len (wrk->pending_session_wrk_updates) == 0))
733 vec_foreach (sip, wrk->pending_session_wrk_updates)
735 s = vcl_session_get (wrk, *sip);
736 vcl_send_session_worker_update (wrk, s, wrk->wrk_index);
737 state = s->session_state;
738 vppcom_wait_for_session_state_change (s->session_index, STATE_UPDATED, 5);
739 s->session_state = state;
741 vec_reset_length (wrk->pending_session_wrk_updates);
745 vcl_flush_mq_events (void)
747 vcl_worker_t *wrk = vcl_worker_get_current ();
748 svm_msg_q_msg_t *msg;
753 mq = wrk->app_event_queue;
755 vcl_mq_dequeue_batch (wrk, mq);
756 svm_msg_q_unlock (mq);
758 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
760 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
761 e = svm_msg_q_msg_data (mq, msg);
762 vcl_handle_mq_event (wrk, e);
763 svm_msg_q_free_msg (mq, msg);
765 vec_reset_length (wrk->mq_msg_vector);
766 vcl_handle_pending_wrk_updates (wrk);
770 vppcom_app_session_enable (void)
774 if (vcm->app_state != STATE_APP_ENABLED)
776 vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
777 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
778 if (PREDICT_FALSE (rv))
780 VDBG (0, "VCL<%d>: application session enable timed out! "
781 "returning %d (%s)", getpid (), rv, vppcom_retval_str (rv));
789 vppcom_app_attach (void)
793 vppcom_app_send_attach ();
794 rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED);
795 if (PREDICT_FALSE (rv))
797 VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)",
798 getpid (), rv, vppcom_retval_str (rv));
806 vppcom_session_unbind (u32 session_handle)
808 vcl_worker_t *wrk = vcl_worker_get_current ();
809 vcl_session_t *session = 0;
812 session = vcl_session_get_w_handle (wrk, session_handle);
814 return VPPCOM_EBADFD;
816 vpp_handle = session->vpp_handle;
817 vcl_session_table_del_listener (wrk, vpp_handle);
818 session->vpp_handle = ~0;
819 session->session_state = STATE_DISCONNECT;
821 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state"
822 " 0x%x (%s)", getpid (), vpp_handle, session_handle, STATE_DISCONNECT,
823 vppcom_session_state_str (STATE_DISCONNECT));
824 vcl_evt (VCL_EVT_UNBIND, session);
825 vppcom_send_unbind_sock (vpp_handle);
831 vppcom_session_disconnect (u32 session_handle)
833 vcl_worker_t *wrk = vcl_worker_get_current ();
834 svm_msg_q_t *vpp_evt_q;
835 vcl_session_t *session;
836 session_state_t state;
839 session = vcl_session_get_w_handle (wrk, session_handle);
841 return VPPCOM_EBADFD;
843 vpp_handle = session->vpp_handle;
844 state = session->session_state;
846 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (),
847 vpp_handle, session_handle, state, vppcom_session_state_str (state));
849 if (PREDICT_FALSE (state & STATE_LISTEN))
851 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
852 "Cannot disconnect a listen socket!",
853 getpid (), vpp_handle, session_handle);
854 return VPPCOM_EBADFD;
857 if (state & STATE_VPP_CLOSING)
859 vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
860 vcl_send_session_disconnected_reply (vpp_evt_q, wrk->my_client_index,
862 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect "
863 "REPLY...", getpid (), vpp_handle, session_handle);
867 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...",
868 getpid (), vpp_handle, session_handle);
869 vppcom_send_disconnect_session (vpp_handle);
876 vcl_cleanup_bapi (void)
878 socket_client_main_t *scm = &socket_client_main;
879 api_main_t *am = &api_main;
881 am->my_client_index = ~0;
882 am->my_registration = 0;
883 am->vl_input_queue = 0;
884 am->msg_index_by_name_and_crc = 0;
887 vl_client_api_unmap ();
891 vcl_cleanup_forked_child (vcl_worker_t * wrk, vcl_worker_t * child_wrk)
893 vcl_worker_t *sub_child;
896 if (child_wrk->forked_child != ~0)
898 sub_child = vcl_worker_get_if_valid (child_wrk->forked_child);
901 /* Wait a bit, maybe the process is going away */
902 while (kill (sub_child->current_pid, 0) >= 0 && tries++ < 50)
904 if (kill (sub_child->current_pid, 0) < 0)
905 vcl_cleanup_forked_child (child_wrk, sub_child);
908 vcl_worker_cleanup (child_wrk, 1 /* notify vpp */ );
909 VDBG (0, "Cleaned up wrk %u", child_wrk->wrk_index);
910 wrk->forked_child = ~0;
913 static struct sigaction old_sa;
916 vcl_intercept_sigchld_handler (int signum, siginfo_t * si, void *uc)
918 vcl_worker_t *wrk, *child_wrk;
920 if (vcl_get_worker_index () == ~0)
923 if (sigaction (SIGCHLD, &old_sa, 0))
925 VERR ("couldn't restore sigchld");
929 wrk = vcl_worker_get_current ();
930 if (wrk->forked_child == ~0)
933 child_wrk = vcl_worker_get_if_valid (wrk->forked_child);
937 if (si && si->si_pid != child_wrk->current_pid)
939 VDBG (0, "unexpected child pid %u", si->si_pid);
942 vcl_cleanup_forked_child (wrk, child_wrk);
945 if (old_sa.sa_flags & SA_SIGINFO)
947 void (*fn) (int, siginfo_t *, void *) = old_sa.sa_sigaction;
952 void (*fn) (int) = old_sa.sa_handler;
959 vcl_incercept_sigchld ()
962 clib_memset (&sa, 0, sizeof (sa));
963 sa.sa_sigaction = vcl_intercept_sigchld_handler;
964 sa.sa_flags = SA_SIGINFO;
965 if (sigaction (SIGCHLD, &sa, &old_sa))
967 VERR ("couldn't intercept sigchld");
973 vcl_app_pre_fork (void)
975 vcl_incercept_sigchld ();
976 vcl_flush_mq_events ();
980 vcl_app_fork_child_handler (void)
982 vcl_worker_t *parent_wrk, *wrk;
983 int rv, parent_wrk_index;
986 parent_wrk_index = vcl_get_worker_index ();
987 VDBG (0, "initializing forked child with parent wrk %u", parent_wrk_index);
992 vcl_set_worker_index (~0);
993 if (!vcl_worker_alloc_and_init ())
994 VERR ("couldn't allocate new worker");
997 * Attach to binary api
999 child_name = format (0, "%v-child-%u%c", vcm->app_name, getpid (), 0);
1000 vcl_cleanup_bapi ();
1001 vppcom_api_hookup ();
1002 vcm->app_state = STATE_APP_START;
1003 rv = vppcom_connect_to_vpp ((char *) child_name);
1004 vec_free (child_name);
1007 VERR ("couldn't connect to VPP!");
1012 * Register worker with vpp and share sessions
1014 vcl_worker_register_with_vpp ();
1015 parent_wrk = vcl_worker_get (parent_wrk_index);
1016 wrk = vcl_worker_get_current ();
1017 wrk->vpp_event_queues = vec_dup (parent_wrk->vpp_event_queues);
1018 vcl_worker_share_sessions (parent_wrk);
1019 parent_wrk->forked_child = vcl_get_worker_index ();
1021 VDBG (0, "forked child main worker initialized");
1026 vcl_app_fork_parent_handler (void)
1029 while (vcm->forking)
1036 * Notify vpp of the disconnect and mark the worker as free. If we're the
1037 * last worker, do a full cleanup otherwise, since we're probably a forked
1038 * child, avoid syscalls as much as possible. We might've lost privileges.
1041 vppcom_app_exit (void)
1043 if (!pool_elts (vcm->workers))
1045 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
1046 vcl_set_worker_index (~0);
1047 vcl_elog_stop (vcm);
1048 if (vec_len (vcm->workers) == 1)
1049 vl_client_disconnect_from_vlib ();
1051 vl_client_send_disconnect (1 /* vpp should cleanup */ );
1055 * VPPCOM Public API functions
1058 vppcom_app_create (char *app_name)
1060 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
1065 VDBG (1, "already initialized");
1066 return VPPCOM_EEXIST;
1070 vppcom_cfg (&vcm->cfg);
1071 vcl_cfg = &vcm->cfg;
1073 vcm->main_cpu = pthread_self ();
1074 vcm->main_pid = getpid ();
1075 vcm->app_name = format (0, "%s", app_name);
1076 vppcom_init_error_string_table ();
1077 svm_fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva,
1078 20 /* timeout in secs */ );
1079 pool_alloc (vcm->workers, vcl_cfg->max_workers);
1080 clib_spinlock_init (&vcm->workers_lock);
1081 clib_rwlock_init (&vcm->segment_table_lock);
1082 pthread_atfork (vcl_app_pre_fork, vcl_app_fork_parent_handler,
1083 vcl_app_fork_child_handler);
1084 atexit (vppcom_app_exit);
1086 /* Allocate default worker */
1087 vcl_worker_alloc_and_init ();
1089 /* API hookup and connect to VPP */
1090 vppcom_api_hookup ();
1091 vcl_elog_init (vcm);
1092 vcm->app_state = STATE_APP_START;
1093 rv = vppcom_connect_to_vpp (app_name);
1096 VERR ("couldn't connect to VPP!");
1099 VDBG (0, "sending session enable");
1100 rv = vppcom_app_session_enable ();
1103 VERR ("vppcom_app_session_enable() failed!");
1107 VDBG (0, "sending app attach");
1108 rv = vppcom_app_attach ();
1111 VERR ("vppcom_app_attach() failed!");
1115 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
1116 vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
1122 vppcom_app_destroy (void)
1125 f64 orig_app_timeout;
1127 if (!pool_elts (vcm->workers))
1130 vcl_evt (VCL_EVT_DETACH, vcm);
1132 if (pool_elts (vcm->workers) == 1)
1134 vppcom_app_send_detach ();
1135 orig_app_timeout = vcm->cfg.app_timeout;
1136 vcm->cfg.app_timeout = 2.0;
1137 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
1138 vcm->cfg.app_timeout = orig_app_timeout;
1139 if (PREDICT_FALSE (rv))
1140 VDBG (0, "application detach timed out! returning %d (%s)", rv,
1141 vppcom_retval_str (rv));
1142 vec_free (vcm->app_name);
1143 vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ );
1147 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
1150 vcl_set_worker_index (~0);
1151 vcl_elog_stop (vcm);
1152 vl_client_disconnect_from_vlib ();
1156 vppcom_session_create (u8 proto, u8 is_nonblocking)
1158 vcl_worker_t *wrk = vcl_worker_get_current ();
1159 vcl_session_t *session;
1161 session = vcl_session_alloc (wrk);
1163 session->session_type = proto;
1164 session->session_state = STATE_START;
1165 session->vpp_handle = ~0;
1166 session->is_dgram = proto == VPPCOM_PROTO_UDP;
1169 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
1171 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
1172 is_nonblocking, session_index);
1174 VDBG (0, "created sid %u", session->session_index);
1176 return vcl_session_handle (session);
1180 vppcom_session_close (uint32_t session_handle)
1182 vcl_worker_t *wrk = vcl_worker_get_current ();
1183 u8 is_vep, do_disconnect = 1;
1184 vcl_session_t *session = 0;
1185 session_state_t state;
1186 u32 next_sh, vep_sh;
1190 session = vcl_session_get_w_handle (wrk, session_handle);
1192 return VPPCOM_EBADFD;
1194 if (session->shared_index != ~0)
1195 do_disconnect = vcl_worker_unshare_session (wrk, session);
1197 is_vep = session->is_vep;
1198 next_sh = session->vep.next_sh;
1199 vep_sh = session->vep.vep_sh;
1200 state = session->session_state;
1201 vpp_handle = session->vpp_handle;
1203 VDBG (1, "closing session handle %u vpp handle %u", session_handle,
1208 while (next_sh != ~0)
1210 rv = vppcom_epoll_ctl (session_handle, EPOLL_CTL_DEL, next_sh, 0);
1211 if (PREDICT_FALSE (rv < 0))
1212 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u"
1213 " failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
1214 vppcom_retval_str (rv));
1216 next_sh = session->vep.next_sh;
1221 if (session->is_vep_session)
1223 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, session_handle, 0);
1225 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u "
1226 "failed! rv %d (%s)", vpp_handle, session_handle, vep_sh,
1227 rv, vppcom_retval_str (rv));
1232 VDBG (0, "session handle %u [0x%llx] disconnect skipped",
1233 session_handle, vpp_handle);
1237 if (state & STATE_LISTEN)
1239 rv = vppcom_session_unbind (session_handle);
1240 if (PREDICT_FALSE (rv < 0))
1241 VDBG (0, "vpp handle 0x%llx, sid %u: listener unbind failed! "
1242 "rv %d (%s)", vpp_handle, session_handle, rv,
1243 vppcom_retval_str (rv));
1245 else if (state & STATE_OPEN)
1247 rv = vppcom_session_disconnect (session_handle);
1248 if (PREDICT_FALSE (rv < 0))
1249 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1250 "session disconnect failed! rv %d (%s)",
1251 getpid (), vpp_handle, session_handle,
1252 rv, vppcom_retval_str (rv));
1254 else if (state == STATE_DISCONNECT)
1256 svm_msg_q_t *mq = vcl_session_vpp_evt_q (wrk, session);
1257 vcl_send_session_reset_reply (mq, wrk->my_client_index,
1258 session->vpp_handle, 0);
1264 if (vcl_session_is_ct (session))
1266 vcl_cut_through_registration_t *ctr;
1269 mq_addr = pointer_to_uword (session->our_evt_q);
1270 ctr = vcl_ct_registration_lock_and_lookup (wrk, mq_addr);
1272 if (ctr->epoll_evt_conn_index != ~0)
1273 vcl_mq_epoll_del_evfd (wrk, ctr->epoll_evt_conn_index);
1274 VDBG (0, "Removing ct registration %u",
1275 vcl_ct_registration_index (wrk, ctr));
1276 vcl_ct_registration_del (wrk, ctr);
1277 vcl_ct_registration_lookup_del (wrk, mq_addr);
1278 vcl_ct_registration_unlock (wrk);
1281 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
1282 vcl_session_free (wrk, session);
1284 VDBG (0, "session handle %u [0x%llx] removed", session_handle, vpp_handle);
1286 vcl_evt (VCL_EVT_CLOSE, session, rv);
1292 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1294 vcl_worker_t *wrk = vcl_worker_get_current ();
1295 vcl_session_t *session = 0;
1298 return VPPCOM_EINVAL;
1300 session = vcl_session_get_w_handle (wrk, session_handle);
1302 return VPPCOM_EBADFD;
1304 if (session->is_vep)
1306 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1307 "bind to an epoll session!", getpid (), session_handle);
1308 return VPPCOM_EBADFD;
1311 session->transport.is_ip4 = ep->is_ip4;
1313 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1314 sizeof (ip4_address_t));
1316 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1317 sizeof (ip6_address_t));
1318 session->transport.lcl_port = ep->port;
1320 VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
1321 "proto %s", getpid (), session_handle,
1322 session->transport.is_ip4 ? "IPv4" : "IPv6",
1323 format_ip46_address, &session->transport.lcl_ip,
1324 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1325 clib_net_to_host_u16 (session->transport.lcl_port),
1326 vppcom_proto_str (session->session_type));
1327 vcl_evt (VCL_EVT_BIND, session);
1329 if (session->session_type == VPPCOM_PROTO_UDP)
1330 vppcom_session_listen (session_handle, 10);
1336 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1338 vcl_worker_t *wrk = vcl_worker_get_current ();
1339 vcl_session_t *listen_session = 0;
1340 u64 listen_vpp_handle;
1343 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1344 if (!listen_session || listen_session->is_vep)
1345 return VPPCOM_EBADFD;
1347 if (q_len == 0 || q_len == ~0)
1348 q_len = vcm->cfg.listen_queue_size;
1350 listen_vpp_handle = listen_session->vpp_handle;
1351 if (listen_session->session_state & STATE_LISTEN)
1353 VDBG (0, "session %u [0x%llx]: already in listen state!",
1354 listen_sh, listen_vpp_handle);
1358 VDBG (0, "session %u [0x%llx]: sending vpp listen request...",
1359 listen_sh, listen_vpp_handle);
1362 * Send listen request to vpp and wait for reply
1364 vppcom_send_bind_sock (listen_session);
1365 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1367 vcm->cfg.session_timeout);
1369 if (PREDICT_FALSE (rv))
1371 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1372 VDBG (0, "session %u [0x%llx]: listen failed! returning %d (%s)",
1373 listen_sh, listen_session->vpp_handle, rv,
1374 vppcom_retval_str (rv));
1382 vppcom_session_tls_add_cert (uint32_t session_handle, char *cert,
1386 vcl_worker_t *wrk = vcl_worker_get_current ();
1387 vcl_session_t *session = 0;
1389 session = vcl_session_get_w_handle (wrk, session_handle);
1391 return VPPCOM_EBADFD;
1393 if (cert_len == 0 || cert_len == ~0)
1394 return VPPCOM_EBADFD;
1397 * Send listen request to vpp and wait for reply
1399 vppcom_send_application_tls_cert_add (session, cert, cert_len);
1406 vppcom_session_tls_add_key (uint32_t session_handle, char *key,
1410 vcl_worker_t *wrk = vcl_worker_get_current ();
1411 vcl_session_t *session = 0;
1413 session = vcl_session_get_w_handle (wrk, session_handle);
1415 return VPPCOM_EBADFD;
1417 if (key_len == 0 || key_len == ~0)
1418 return VPPCOM_EBADFD;
1421 * Send listen request to vpp and wait for reply
1423 vppcom_send_application_tls_key_add (session, key, key_len);
1431 validate_args_session_accept_ (vcl_worker_t * wrk,
1432 vcl_session_t * listen_session)
1434 /* Input validation - expects spinlock on sessions_lockp */
1435 if (listen_session->is_vep)
1437 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1438 "epoll session!", getpid (),
1439 listen_session->session_index);
1440 return VPPCOM_EBADFD;
1443 if (listen_session->session_state != STATE_LISTEN)
1445 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1446 "not in listen state! state 0x%x (%s)", getpid (),
1447 listen_session->vpp_handle, listen_session->session_index,
1448 listen_session->session_state,
1449 vppcom_session_state_str (listen_session->session_state));
1450 return VPPCOM_EBADFD;
1456 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1459 u32 client_session_index = ~0, listen_session_index, accept_flags = 0;
1460 vcl_worker_t *wrk = vcl_worker_get_current ();
1461 session_accepted_msg_t accepted_msg;
1462 vcl_session_t *listen_session = 0;
1463 vcl_session_t *client_session = 0;
1464 svm_msg_q_t *vpp_evt_q;
1465 vcl_session_msg_t *evt;
1466 u64 listen_vpp_handle;
1467 svm_msg_q_msg_t msg;
1472 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1473 if (!listen_session)
1474 return VPPCOM_EBADFD;
1476 listen_session_index = listen_session->session_index;
1477 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1480 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1482 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1483 accept_flags = evt->flags;
1484 accepted_msg = evt->accepted_msg;
1488 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1489 VCL_SESS_ATTR_NONBLOCK);
1490 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1491 return VPPCOM_EAGAIN;
1495 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1496 return VPPCOM_EAGAIN;
1498 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1499 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1501 clib_warning ("discarded event: %u", e->event_type);
1502 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1505 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1506 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1512 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1513 listen_session = vcl_session_get (wrk, listen_session_index);
1514 client_session = vcl_session_get (wrk, client_session_index);
1516 if (flags & O_NONBLOCK)
1517 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1519 listen_vpp_handle = listen_session->vpp_handle;
1520 VDBG (1, "vpp handle 0x%llx, sid %u: Got a client request! "
1521 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1522 listen_vpp_handle, listen_session_handle,
1523 client_session->vpp_handle, client_session_index,
1524 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1525 VCL_SESS_ATTR_NONBLOCK));
1529 ep->is_ip4 = client_session->transport.is_ip4;
1530 ep->port = client_session->transport.rmt_port;
1531 if (client_session->transport.is_ip4)
1532 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1533 sizeof (ip4_address_t));
1535 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1536 sizeof (ip6_address_t));
1539 if (accepted_msg.server_event_queue_address)
1540 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1543 vpp_evt_q = client_session->vpp_evt_q;
1545 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1546 client_session->vpp_handle, 0);
1548 VDBG (0, "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u "
1549 "local: %U:%u", listen_session_handle, listen_vpp_handle,
1550 client_session_index, client_session->vpp_handle,
1551 format_ip46_address, &client_session->transport.rmt_ip,
1552 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1553 clib_net_to_host_u16 (client_session->transport.rmt_port),
1554 format_ip46_address, &client_session->transport.lcl_ip,
1555 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1556 clib_net_to_host_u16 (client_session->transport.lcl_port));
1557 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1558 client_session_index);
1561 * Session might have been closed already
1565 if (accept_flags & VCL_ACCEPTED_F_CLOSED)
1566 client_session->session_state = STATE_VPP_CLOSING;
1567 else if (accept_flags & VCL_ACCEPTED_F_RESET)
1568 client_session->session_state = STATE_DISCONNECT;
1570 return vcl_session_handle (client_session);
1574 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1576 vcl_worker_t *wrk = vcl_worker_get_current ();
1577 vcl_session_t *session = 0;
1581 session = vcl_session_get_w_handle (wrk, session_handle);
1583 return VPPCOM_EBADFD;
1584 session_index = session->session_index;
1586 if (PREDICT_FALSE (session->is_vep))
1588 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1589 "connect on an epoll session!", getpid (),
1591 return VPPCOM_EBADFD;
1594 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1596 VDBG (0, "session handle %u [0x%llx]: session already "
1597 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1598 session_handle, session->vpp_handle,
1599 session->transport.is_ip4 ? "IPv4" : "IPv6",
1600 format_ip46_address,
1601 &session->transport.rmt_ip, session->transport.is_ip4 ?
1602 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1603 clib_net_to_host_u16 (session->transport.rmt_port),
1604 vppcom_proto_str (session->session_type), session->session_state,
1605 vppcom_session_state_str (session->session_state));
1609 session->transport.is_ip4 = server_ep->is_ip4;
1610 if (session->transport.is_ip4)
1611 clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
1612 sizeof (ip4_address_t));
1614 clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
1615 sizeof (ip6_address_t));
1616 session->transport.rmt_port = server_ep->port;
1618 VDBG (0, "session handle %u [0x%llx]: connecting to server %s %U "
1619 "port %d proto %s", session_handle, session->vpp_handle,
1620 session->transport.is_ip4 ? "IPv4" : "IPv6",
1621 format_ip46_address,
1622 &session->transport.rmt_ip, session->transport.is_ip4 ?
1623 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1624 clib_net_to_host_u16 (session->transport.rmt_port),
1625 vppcom_proto_str (session->session_type));
1628 * Send connect request and wait for reply from vpp
1630 vppcom_send_connect_sock (session);
1631 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1632 vcm->cfg.session_timeout);
1634 session = vcl_session_get (wrk, session_index);
1636 if (PREDICT_FALSE (rv))
1638 if (VPPCOM_DEBUG > 0)
1641 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1642 "failed! returning %d (%s)", getpid (),
1643 session->vpp_handle, session_handle, rv,
1644 vppcom_retval_str (rv));
1646 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1647 "returning %d (%s)", getpid (),
1648 session_handle, rv, vppcom_retval_str (rv));
1652 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1653 getpid (), session->vpp_handle, session_handle);
1659 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1662 return (e->event_type == FIFO_EVENT_APP_RX
1663 && e->fifo->client_session_index == sid);
1665 return (e->event_type == SESSION_IO_EVT_CT_TX);
1669 vcl_session_is_readable (vcl_session_t * s)
1671 return ((s->session_state & STATE_OPEN)
1672 || (s->session_state == STATE_LISTEN
1673 && s->session_type == VPPCOM_PROTO_UDP));
1677 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1680 vcl_worker_t *wrk = vcl_worker_get_current ();
1681 int n_read = 0, rv, is_nonblocking;
1682 vcl_session_t *s = 0;
1683 svm_fifo_t *rx_fifo;
1684 svm_msg_q_msg_t msg;
1689 if (PREDICT_FALSE (!buf))
1690 return VPPCOM_EINVAL;
1692 s = vcl_session_get_w_handle (wrk, session_handle);
1693 if (PREDICT_FALSE (!s || s->is_vep))
1694 return VPPCOM_EBADFD;
1696 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1698 session_state_t state = s->session_state;
1699 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1701 VDBG (0, "session handle %u[0x%llx] is not open! state 0x%x (%s),"
1702 " returning %d (%s)", session_handle, s->vpp_handle, state,
1703 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1707 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1708 is_ct = vcl_session_is_ct (s);
1709 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1710 rx_fifo = s->rx_fifo;
1713 if (svm_fifo_is_empty (rx_fifo))
1717 svm_fifo_unset_event (rx_fifo);
1718 return VPPCOM_EWOULDBLOCK;
1720 while (svm_fifo_is_empty (rx_fifo))
1722 svm_fifo_unset_event (rx_fifo);
1723 svm_msg_q_lock (mq);
1724 if (svm_msg_q_is_empty (mq))
1725 svm_msg_q_wait (mq);
1727 svm_msg_q_sub_w_lock (mq, &msg);
1728 e = svm_msg_q_msg_data (mq, &msg);
1729 svm_msg_q_unlock (mq);
1730 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1731 vcl_handle_mq_event (wrk, e);
1732 svm_msg_q_free_msg (mq, &msg);
1734 if (PREDICT_FALSE (s->session_state == STATE_DISCONNECT))
1735 return VPPCOM_ECONNRESET;
1740 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1742 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1744 if (svm_fifo_is_empty (rx_fifo))
1745 svm_fifo_unset_event (rx_fifo);
1747 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1749 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1750 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1754 VDBG (2, "vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1755 s->vpp_handle, session_handle, n_read, rx_fifo);
1761 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1763 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1767 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1769 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1773 vppcom_session_read_segments (uint32_t session_handle,
1774 vppcom_data_segments_t ds)
1776 vcl_worker_t *wrk = vcl_worker_get_current ();
1777 int n_read = 0, rv, is_nonblocking;
1778 vcl_session_t *s = 0;
1779 svm_fifo_t *rx_fifo;
1780 svm_msg_q_msg_t msg;
1785 s = vcl_session_get_w_handle (wrk, session_handle);
1786 if (PREDICT_FALSE (!s || s->is_vep))
1787 return VPPCOM_EBADFD;
1789 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1791 session_state_t state = s->session_state;
1792 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1796 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1797 is_ct = vcl_session_is_ct (s);
1798 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1799 rx_fifo = s->rx_fifo;
1802 if (svm_fifo_is_empty (rx_fifo))
1806 svm_fifo_unset_event (rx_fifo);
1807 return VPPCOM_EWOULDBLOCK;
1809 while (svm_fifo_is_empty (rx_fifo))
1811 svm_fifo_unset_event (rx_fifo);
1812 svm_msg_q_lock (mq);
1813 if (svm_msg_q_is_empty (mq))
1814 svm_msg_q_wait (mq);
1816 svm_msg_q_sub_w_lock (mq, &msg);
1817 e = svm_msg_q_msg_data (mq, &msg);
1818 svm_msg_q_unlock (mq);
1819 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1820 vcl_handle_mq_event (wrk, e);
1821 svm_msg_q_free_msg (mq, &msg);
1823 if (PREDICT_FALSE (s->session_state == STATE_DISCONNECT))
1824 return VPPCOM_ECONNRESET;
1828 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1829 svm_fifo_unset_event (rx_fifo);
1831 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1833 /* If the peer is not polling send notification */
1834 if (!svm_fifo_has_event (s->rx_fifo))
1835 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1836 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1843 vppcom_session_free_segments (uint32_t session_handle,
1844 vppcom_data_segments_t ds)
1846 vcl_worker_t *wrk = vcl_worker_get_current ();
1849 s = vcl_session_get_w_handle (wrk, session_handle);
1850 if (PREDICT_FALSE (!s || s->is_vep))
1853 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1857 vppcom_session_read_ready (vcl_session_t * session)
1859 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1860 if (PREDICT_FALSE (session->is_vep))
1862 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1863 "epoll session!", getpid (), session->session_index);
1864 return VPPCOM_EBADFD;
1867 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1869 session_state_t state = session->session_state;
1872 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1874 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1875 " state 0x%x (%s), returning %d (%s)", getpid (),
1876 session->vpp_handle, session->session_index, state,
1877 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1881 if (session->session_state & STATE_LISTEN)
1882 return clib_fifo_elts (session->accept_evts_fifo);
1884 return svm_fifo_max_dequeue (session->rx_fifo);
1888 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1890 u32 first_copy = clib_min (ds[0].len, max_bytes);
1891 clib_memcpy_fast (buf, ds[0].data, first_copy);
1892 if (first_copy < max_bytes)
1894 clib_memcpy_fast (buf + first_copy, ds[1].data,
1895 clib_min (ds[1].len, max_bytes - first_copy));
1901 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1904 return (e->event_type == FIFO_EVENT_APP_TX
1905 && e->fifo->client_session_index == sid);
1907 return (e->event_type == SESSION_IO_EVT_CT_RX);
1911 vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
1914 vcl_worker_t *wrk = vcl_worker_get_current ();
1915 int rv, n_write, is_nonblocking;
1916 vcl_session_t *s = 0;
1917 svm_fifo_t *tx_fifo = 0;
1918 session_evt_type_t et;
1919 svm_msg_q_msg_t msg;
1924 if (PREDICT_FALSE (!buf))
1925 return VPPCOM_EINVAL;
1927 s = vcl_session_get_w_handle (wrk, session_handle);
1928 if (PREDICT_FALSE (!s))
1929 return VPPCOM_EBADFD;
1931 if (PREDICT_FALSE (s->is_vep))
1933 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1934 "cannot write to an epoll session!",
1935 getpid (), s->vpp_handle, session_handle);
1937 return VPPCOM_EBADFD;
1940 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1942 session_state_t state = s->session_state;
1943 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1944 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1945 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1946 state, vppcom_session_state_str (state));
1950 tx_fifo = s->tx_fifo;
1951 is_ct = vcl_session_is_ct (s);
1952 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1953 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1954 if (svm_fifo_is_full (tx_fifo))
1958 return VPPCOM_EWOULDBLOCK;
1960 while (svm_fifo_is_full (tx_fifo))
1962 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1963 svm_msg_q_lock (mq);
1964 if (svm_msg_q_is_empty (mq))
1965 svm_msg_q_wait (mq);
1967 svm_msg_q_sub_w_lock (mq, &msg);
1968 e = svm_msg_q_msg_data (mq, &msg);
1969 svm_msg_q_unlock (mq);
1971 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1972 vcl_handle_mq_event (wrk, e);
1973 svm_msg_q_free_msg (mq, &msg);
1975 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1976 return VPPCOM_ECONNRESET;
1980 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1981 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1982 if (is_flush && !vcl_session_is_ct (s))
1983 et = SESSION_IO_EVT_TX_FLUSH;
1986 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1987 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1989 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1992 ASSERT (n_write > 0);
1994 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1995 s->vpp_handle, session_handle, n_write);
2001 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
2003 return vppcom_session_write_inline (session_handle, buf, n,
2008 vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n)
2010 return vppcom_session_write_inline (session_handle, buf, n,
2015 static vcl_session_t *
2016 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
2019 s = vcl_session_get (wrk, f->client_session_index);
2023 if (type == 0 && s->rx_fifo == f)
2026 if (type == 1 && s->tx_fifo == f)
2029 s = vcl_session_get (wrk, f->master_session_index);
2032 if (type == 0 && s->rx_fifo == f)
2034 if (type == 1 && s->tx_fifo == f)
2041 vppcom_session_write_ready (vcl_session_t * session)
2043 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2044 if (PREDICT_FALSE (session->is_vep))
2046 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
2047 "cannot write to an epoll session!",
2048 getpid (), session->vpp_handle, session->session_index);
2049 return VPPCOM_EBADFD;
2052 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
2054 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
2055 "cannot write to a listen session!",
2056 getpid (), session->vpp_handle, session->session_index);
2057 return VPPCOM_EBADFD;
2060 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
2062 session_state_t state = session->session_state;
2065 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
2066 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
2067 "session is not open! state 0x%x (%s), "
2068 "returning %d (%s)", getpid (), session->vpp_handle,
2069 session->session_index,
2070 state, vppcom_session_state_str (state),
2071 rv, vppcom_retval_str (rv));
2075 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
2076 getpid (), session->vpp_handle, session->session_index,
2077 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
2079 return svm_fifo_max_enqueue (session->tx_fifo);
2082 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
2083 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
2085 svm_fifo_unset_event (_fifo); \
2086 if (svm_fifo_is_empty (_fifo)) \
2091 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2092 unsigned long n_bits, unsigned long *read_map,
2093 unsigned long *write_map,
2094 unsigned long *except_map, u32 * bits_set)
2096 session_disconnected_msg_t *disconnected_msg;
2097 session_connected_msg_t *connected_msg;
2098 vcl_session_t *session;
2101 switch (e->event_type)
2103 case FIFO_EVENT_APP_RX:
2104 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2105 sid = e->fifo->client_session_index;
2106 session = vcl_session_get (wrk, sid);
2109 if (sid < n_bits && read_map)
2111 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2115 case FIFO_EVENT_APP_TX:
2116 sid = e->fifo->client_session_index;
2117 session = vcl_session_get (wrk, sid);
2120 if (sid < n_bits && write_map)
2122 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2126 case SESSION_IO_EVT_CT_TX:
2127 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2128 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2131 sid = session->session_index;
2132 if (sid < n_bits && read_map)
2134 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2138 case SESSION_IO_EVT_CT_RX:
2139 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2142 sid = session->session_index;
2143 if (sid < n_bits && write_map)
2145 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2149 case SESSION_CTRL_EVT_ACCEPTED:
2150 session = vcl_session_accepted (wrk,
2151 (session_accepted_msg_t *) e->data);
2154 sid = session->session_index;
2155 if (sid < n_bits && read_map)
2157 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2161 case SESSION_CTRL_EVT_CONNECTED:
2162 connected_msg = (session_connected_msg_t *) e->data;
2163 vcl_session_connected_handler (wrk, connected_msg);
2165 case SESSION_CTRL_EVT_DISCONNECTED:
2166 disconnected_msg = (session_disconnected_msg_t *) e->data;
2167 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2170 sid = session->session_index;
2171 if (sid < n_bits && except_map)
2173 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2177 case SESSION_CTRL_EVT_RESET:
2178 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2179 if (sid < n_bits && except_map)
2181 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2185 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
2186 vcl_session_worker_update_reply_handler (wrk, e->data);
2188 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
2189 vcl_session_req_worker_update_handler (wrk, e->data);
2192 clib_warning ("unhandled: %u", e->event_type);
2198 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2199 unsigned long n_bits, unsigned long *read_map,
2200 unsigned long *write_map, unsigned long *except_map,
2201 double time_to_wait, u32 * bits_set)
2203 svm_msg_q_msg_t *msg;
2207 svm_msg_q_lock (mq);
2208 if (svm_msg_q_is_empty (mq))
2212 svm_msg_q_unlock (mq);
2218 svm_msg_q_unlock (mq);
2221 else if (time_to_wait < 0)
2223 svm_msg_q_wait (mq);
2227 if (svm_msg_q_timedwait (mq, time_to_wait))
2229 svm_msg_q_unlock (mq);
2234 vcl_mq_dequeue_batch (wrk, mq);
2235 svm_msg_q_unlock (mq);
2237 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2239 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2240 e = svm_msg_q_msg_data (mq, msg);
2241 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
2242 except_map, bits_set);
2243 svm_msg_q_free_msg (mq, msg);
2245 vec_reset_length (wrk->mq_msg_vector);
2246 vcl_handle_pending_wrk_updates (wrk);
2251 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
2252 unsigned long *read_map, unsigned long *write_map,
2253 unsigned long *except_map, double time_to_wait,
2256 double total_wait = 0, wait_slice;
2257 vcl_cut_through_registration_t *cr;
2259 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
2260 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
2263 vcl_ct_registration_lock (wrk);
2265 pool_foreach (cr, wrk->cut_through_registrations, ({
2266 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
2270 vcl_ct_registration_unlock (wrk);
2272 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2273 write_map, except_map, time_to_wait, bits_set);
2274 total_wait += wait_slice;
2278 while (total_wait < time_to_wait);
2284 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
2285 unsigned long *read_map, unsigned long *write_map,
2286 unsigned long *except_map, double time_to_wait,
2289 vcl_mq_evt_conn_t *mqc;
2290 int __clib_unused n_read;
2294 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2295 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2296 vec_len (wrk->mq_events), time_to_wait);
2297 for (i = 0; i < n_mq_evts; i++)
2299 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2300 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2301 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2302 except_map, 0, bits_set);
2305 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2309 vppcom_select (unsigned long n_bits, unsigned long *read_map,
2310 unsigned long *write_map, unsigned long *except_map,
2311 double time_to_wait)
2313 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2314 vcl_worker_t *wrk = vcl_worker_get_current ();
2315 vcl_session_t *session = 0;
2318 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (unsigned long),
2319 "vppcom bitmap size mismatch");
2320 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (fd_mask),
2321 "vppcom bitmap size mismatch");
2322 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (uword),
2323 "vppcom bitmap size mismatch");
2325 if (n_bits && read_map)
2327 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2328 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2329 vec_len (wrk->rd_bitmap) * sizeof (unsigned long));
2330 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (unsigned long));
2332 if (n_bits && write_map)
2334 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2335 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2336 vec_len (wrk->wr_bitmap) * sizeof (unsigned long));
2337 memset (write_map, 0,
2338 vec_len (wrk->wr_bitmap) * sizeof (unsigned long));
2340 if (n_bits && except_map)
2342 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2343 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2344 vec_len (wrk->ex_bitmap) * sizeof (unsigned long));
2345 memset (except_map, 0,
2346 vec_len (wrk->ex_bitmap) * sizeof (unsigned long));
2356 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2357 if (!(session = vcl_session_get (wrk, sid)))
2359 if (except_map && sid < minbits)
2360 clib_bitmap_set_no_check (except_map, sid, 1);
2364 rv = svm_fifo_is_full (session->tx_fifo);
2367 clib_bitmap_set_no_check ((uword*)write_map, sid, 1);
2376 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2377 if (!(session = vcl_session_get (wrk, sid)))
2379 if (except_map && sid < minbits)
2380 clib_bitmap_set_no_check (except_map, sid, 1);
2384 rv = vppcom_session_read_ready (session);
2387 clib_bitmap_set_no_check ((uword*)read_map, sid, 1);
2395 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2397 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2398 read_map, write_map, except_map, &bits_set);
2400 vec_reset_length (wrk->unhandled_evts_vector);
2402 if (vcm->cfg.use_mq_eventfd)
2403 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2404 time_to_wait, &bits_set);
2406 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2407 time_to_wait, &bits_set);
2413 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2415 vcl_session_t *session;
2416 vppcom_epoll_t *vep;
2419 if (VPPCOM_DEBUG <= 1)
2422 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2423 session = vcl_session_get (wrk, vep_idx);
2424 if (PREDICT_FALSE (!session))
2426 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2427 getpid (), vep_idx);
2430 if (PREDICT_FALSE (!session->is_vep))
2432 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2433 getpid (), vep_idx);
2436 vep = &session->vep;
2437 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2440 " is_vep_session = %u\n"
2441 " next_sid = 0x%x (%u)\n"
2442 " wait_cont_idx = 0x%x (%u)\n"
2443 "}\n", getpid (), vep_idx,
2444 session->is_vep, session->is_vep_session,
2445 vep->next_sh, vep->next_sh,
2446 session->wait_cont_idx, session->wait_cont_idx);
2448 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2450 session = vcl_session_get (wrk, sid);
2451 if (PREDICT_FALSE (!session))
2453 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2456 if (PREDICT_FALSE (session->is_vep))
2457 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2458 getpid (), vep_idx);
2459 else if (PREDICT_FALSE (!session->is_vep_session))
2461 clib_warning ("VCL<%d>: ERROR: session (%u) "
2462 "is not a vep session!", getpid (), sid);
2465 vep = &session->vep;
2466 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2467 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2468 "vep_idx (%u)!", getpid (),
2469 sid, session->vep.vep_sh, vep_idx);
2470 if (session->is_vep_session)
2472 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2474 " next_sid = 0x%x (%u)\n"
2475 " prev_sid = 0x%x (%u)\n"
2476 " vep_idx = 0x%x (%u)\n"
2477 " ev.events = 0x%x\n"
2478 " ev.data.u64 = 0x%llx\n"
2482 vep->next_sh, vep->next_sh,
2483 vep->prev_sh, vep->prev_sh,
2484 vep->vep_sh, vep->vep_sh,
2485 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2490 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2491 getpid (), vep_idx);
2495 vppcom_epoll_create (void)
2497 vcl_worker_t *wrk = vcl_worker_get_current ();
2498 vcl_session_t *vep_session;
2500 vep_session = vcl_session_alloc (wrk);
2502 vep_session->is_vep = 1;
2503 vep_session->vep.vep_sh = ~0;
2504 vep_session->vep.next_sh = ~0;
2505 vep_session->vep.prev_sh = ~0;
2506 vep_session->wait_cont_idx = ~0;
2507 vep_session->vpp_handle = ~0;
2509 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_session->session_index);
2510 VDBG (0, "Created vep_idx %u", vep_session->session_index);
2512 return vcl_session_handle (vep_session);
2516 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2517 struct epoll_event *event)
2519 vcl_worker_t *wrk = vcl_worker_get_current ();
2520 vcl_session_t *vep_session;
2521 vcl_session_t *session;
2524 if (vep_handle == session_handle)
2526 VDBG (0, "vep_sh == session handle (%u)!", vep_handle);
2527 return VPPCOM_EINVAL;
2530 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2531 if (PREDICT_FALSE (!vep_session))
2533 VDBG (0, "Invalid vep_sh (%u)!", vep_handle);
2534 return VPPCOM_EBADFD;
2536 if (PREDICT_FALSE (!vep_session->is_vep))
2538 VDBG (0, "vep_sh (%u) is not a vep!", vep_handle);
2539 return VPPCOM_EINVAL;
2542 ASSERT (vep_session->vep.vep_sh == ~0);
2543 ASSERT (vep_session->vep.prev_sh == ~0);
2545 session = vcl_session_get_w_handle (wrk, session_handle);
2546 if (PREDICT_FALSE (!session))
2548 VDBG (0, "Invalid session_handle (%u)!", session_handle);
2549 return VPPCOM_EBADFD;
2551 if (PREDICT_FALSE (session->is_vep))
2553 VDBG (0, "session_handle (%u) is a vep!", vep_handle);
2554 return VPPCOM_EINVAL;
2560 if (PREDICT_FALSE (!event))
2562 VDBG (0, "EPOLL_CTL_ADD: NULL pointer to epoll_event structure!");
2563 return VPPCOM_EINVAL;
2565 if (vep_session->vep.next_sh != ~0)
2567 vcl_session_t *next_session;
2568 next_session = vcl_session_get_w_handle (wrk,
2569 vep_session->vep.next_sh);
2570 if (PREDICT_FALSE (!next_session))
2572 VDBG (0, "EPOLL_CTL_ADD: Invalid vep.next_sid (%u) on "
2573 "vep_idx (%u)!", vep_session->vep.next_sh, vep_handle);
2574 return VPPCOM_EBADFD;
2576 ASSERT (next_session->vep.prev_sh == vep_handle);
2577 next_session->vep.prev_sh = session_handle;
2579 session->vep.next_sh = vep_session->vep.next_sh;
2580 session->vep.prev_sh = vep_handle;
2581 session->vep.vep_sh = vep_handle;
2582 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2583 session->vep.ev = *event;
2584 session->is_vep = 0;
2585 session->is_vep_session = 1;
2586 vep_session->vep.next_sh = session_handle;
2588 VDBG (1, "EPOLL_CTL_ADD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
2589 vep_handle, session_handle, event->events, event->data.u64);
2590 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2594 if (PREDICT_FALSE (!event))
2596 VDBG (0, "EPOLL_CTL_MOD: NULL pointer to epoll_event structure!");
2600 else if (PREDICT_FALSE (!session->is_vep_session))
2602 VDBG (0, "sid %u EPOLL_CTL_MOD: not a vep session!",
2607 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2609 VDBG (0, "EPOLL_CTL_MOD: sh %u vep_sh (%u) != vep_sh (%u)!",
2610 session_handle, session->vep.vep_sh, vep_handle);
2614 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2615 session->vep.ev = *event;
2616 VDBG (1, "EPOLL_CTL_MOD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
2617 vep_handle, session_handle, event->events, event->data.u64);
2621 if (PREDICT_FALSE (!session->is_vep_session))
2623 VDBG (0, "EPOLL_CTL_DEL: %u not a vep session!", session_handle);
2627 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2629 VDBG (0, "EPOLL_CTL_DEL: sh %u vep_sh (%u) != vep_sh (%u)!",
2630 session_handle, session->vep.vep_sh, vep_handle);
2635 vep_session->wait_cont_idx =
2636 (vep_session->wait_cont_idx == session_handle) ?
2637 session->vep.next_sh : vep_session->wait_cont_idx;
2639 if (session->vep.prev_sh == vep_handle)
2640 vep_session->vep.next_sh = session->vep.next_sh;
2643 vcl_session_t *prev_session;
2644 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2645 if (PREDICT_FALSE (!prev_session))
2647 VDBG (0, "EPOLL_CTL_DEL: Invalid prev_sid (%u) on sid (%u)!",
2648 session->vep.prev_sh, session_handle);
2649 return VPPCOM_EBADFD;
2651 ASSERT (prev_session->vep.next_sh == session_handle);
2652 prev_session->vep.next_sh = session->vep.next_sh;
2654 if (session->vep.next_sh != ~0)
2656 vcl_session_t *next_session;
2657 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2658 if (PREDICT_FALSE (!next_session))
2660 VDBG (0, "EPOLL_CTL_DEL: Invalid next_sid (%u) on sid (%u)!",
2661 session->vep.next_sh, session_handle);
2662 return VPPCOM_EBADFD;
2664 ASSERT (next_session->vep.prev_sh == session_handle);
2665 next_session->vep.prev_sh = session->vep.prev_sh;
2668 memset (&session->vep, 0, sizeof (session->vep));
2669 session->vep.next_sh = ~0;
2670 session->vep.prev_sh = ~0;
2671 session->vep.vep_sh = ~0;
2672 session->is_vep_session = 0;
2673 VDBG (1, "EPOLL_CTL_DEL: vep_idx %u, sid %u!", vep_handle,
2675 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2679 VDBG (0, "Invalid operation (%d)!", op);
2683 vep_verify_epoll_chain (wrk, vep_handle);
2690 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2691 struct epoll_event *events, u32 * num_ev)
2693 session_disconnected_msg_t *disconnected_msg;
2694 session_connected_msg_t *connected_msg;
2695 u32 sid = ~0, session_events;
2696 u64 session_evt_data = ~0;
2697 vcl_session_t *session;
2700 switch (e->event_type)
2702 case FIFO_EVENT_APP_RX:
2703 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2704 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2705 sid = e->fifo->client_session_index;
2706 if (!(session = vcl_session_get (wrk, sid)))
2708 session_events = session->vep.ev.events;
2709 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2712 events[*num_ev].events |= EPOLLIN;
2713 session_evt_data = session->vep.ev.data.u64;
2714 session->has_rx_evt = 1;
2716 case FIFO_EVENT_APP_TX:
2717 sid = e->fifo->client_session_index;
2718 if (!(session = vcl_session_get (wrk, sid)))
2720 session_events = session->vep.ev.events;
2721 if (!(EPOLLOUT & session_events))
2724 events[*num_ev].events |= EPOLLOUT;
2725 session_evt_data = session->vep.ev.data.u64;
2727 case SESSION_IO_EVT_CT_TX:
2728 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2729 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2730 if (PREDICT_FALSE (!session))
2732 sid = session->session_index;
2733 session_events = session->vep.ev.events;
2734 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2737 events[*num_ev].events |= EPOLLIN;
2738 session_evt_data = session->vep.ev.data.u64;
2739 session->has_rx_evt = 1;
2741 case SESSION_IO_EVT_CT_RX:
2742 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2743 if (PREDICT_FALSE (!session))
2745 sid = session->session_index;
2746 session_events = session->vep.ev.events;
2747 if (!(EPOLLOUT & session_events))
2750 events[*num_ev].events |= EPOLLOUT;
2751 session_evt_data = session->vep.ev.data.u64;
2753 case SESSION_CTRL_EVT_ACCEPTED:
2754 session = vcl_session_accepted (wrk,
2755 (session_accepted_msg_t *) e->data);
2759 session_events = session->vep.ev.events;
2760 if (!(EPOLLIN & session_events))
2764 events[*num_ev].events |= EPOLLIN;
2765 session_evt_data = session->vep.ev.data.u64;
2767 case SESSION_CTRL_EVT_CONNECTED:
2768 connected_msg = (session_connected_msg_t *) e->data;
2769 vcl_session_connected_handler (wrk, connected_msg);
2770 /* Generate EPOLLOUT because there's no connected event */
2771 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2772 if (!(session = vcl_session_get (wrk, sid)))
2774 session_events = session->vep.ev.events;
2775 if (EPOLLOUT & session_events)
2778 events[*num_ev].events |= EPOLLOUT;
2779 session_evt_data = session->vep.ev.data.u64;
2782 case SESSION_CTRL_EVT_DISCONNECTED:
2783 disconnected_msg = (session_disconnected_msg_t *) e->data;
2784 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2788 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2789 session_evt_data = session->vep.ev.data.u64;
2790 session_events = session->vep.ev.events;
2792 case SESSION_CTRL_EVT_RESET:
2793 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2794 if (!(session = vcl_session_get (wrk, sid)))
2797 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2798 session_evt_data = session->vep.ev.data.u64;
2799 session_events = session->vep.ev.events;
2801 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
2802 vcl_session_req_worker_update_handler (wrk, e->data);
2804 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
2805 vcl_session_worker_update_reply_handler (wrk, e->data);
2808 VDBG (0, "unhandled: %u", e->event_type);
2814 events[*num_ev].data.u64 = session_evt_data;
2815 if (EPOLLONESHOT & session_events)
2817 session = vcl_session_get (wrk, sid);
2818 session->vep.ev.events = 0;
2825 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2826 struct epoll_event *events, u32 maxevents,
2827 double wait_for_time, u32 * num_ev)
2829 svm_msg_q_msg_t *msg;
2833 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2834 goto handle_dequeued;
2836 svm_msg_q_lock (mq);
2837 if (svm_msg_q_is_empty (mq))
2841 svm_msg_q_unlock (mq);
2844 else if (wait_for_time < 0)
2846 svm_msg_q_wait (mq);
2850 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2852 svm_msg_q_unlock (mq);
2857 vcl_mq_dequeue_batch (wrk, mq);
2858 svm_msg_q_unlock (mq);
2861 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2863 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2864 e = svm_msg_q_msg_data (mq, msg);
2865 if (*num_ev < maxevents)
2866 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2868 vec_add1 (wrk->unhandled_evts_vector, *e);
2869 svm_msg_q_free_msg (mq, msg);
2871 vec_reset_length (wrk->mq_msg_vector);
2872 vcl_handle_pending_wrk_updates (wrk);
2877 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2878 int maxevents, u32 n_evts, double wait_for_time)
2880 vcl_cut_through_registration_t *cr;
2881 double total_wait = 0, wait_slice;
2884 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2885 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2889 vcl_ct_registration_lock (wrk);
2891 pool_foreach (cr, wrk->cut_through_registrations, ({
2892 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2895 vcl_ct_registration_unlock (wrk);
2897 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2898 maxevents, n_evts ? 0 : wait_slice,
2901 total_wait += wait_slice;
2905 while (total_wait < wait_for_time);
2910 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2911 int maxevents, u32 n_evts, double wait_for_time)
2913 vcl_mq_evt_conn_t *mqc;
2914 int __clib_unused n_read;
2918 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2920 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2921 vec_len (wrk->mq_events), wait_for_time);
2922 for (i = 0; i < n_mq_evts; i++)
2924 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2925 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2926 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2928 if (!n_evts && n_mq_evts > 0)
2931 return (int) n_evts;
2935 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2936 int maxevents, double wait_for_time)
2938 vcl_worker_t *wrk = vcl_worker_get_current ();
2939 vcl_session_t *vep_session;
2943 if (PREDICT_FALSE (maxevents <= 0))
2945 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2946 getpid (), maxevents);
2947 return VPPCOM_EINVAL;
2950 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2952 return VPPCOM_EBADFD;
2954 if (PREDICT_FALSE (!vep_session->is_vep))
2956 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2957 getpid (), vep_handle);
2958 return VPPCOM_EINVAL;
2961 memset (events, 0, sizeof (*events) * maxevents);
2963 if (vec_len (wrk->unhandled_evts_vector))
2965 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2967 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2969 if (n_evts == maxevents)
2976 vec_delete (wrk->unhandled_evts_vector, i, 0);
2979 if (vcm->cfg.use_mq_eventfd)
2980 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2983 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2988 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2989 void *buffer, uint32_t * buflen)
2991 vcl_worker_t *wrk = vcl_worker_get_current ();
2992 vcl_session_t *session;
2994 u32 *flags = buffer, tmp_flags = 0;
2995 vppcom_endpt_t *ep = buffer;
2997 session = vcl_session_get_w_handle (wrk, session_handle);
2999 return VPPCOM_EBADFD;
3003 case VPPCOM_ATTR_GET_NREAD:
3004 rv = vppcom_session_read_ready (session);
3005 VDBG (2, "VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d", rv);
3008 case VPPCOM_ATTR_GET_NWRITE:
3009 rv = vppcom_session_write_ready (session);
3010 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
3011 getpid (), session_handle, rv);
3014 case VPPCOM_ATTR_GET_FLAGS:
3015 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
3017 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
3018 VCL_SESS_ATTR_NONBLOCK));
3019 *buflen = sizeof (*flags);
3020 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
3021 "is_nonblocking = %u", getpid (),
3022 session_handle, *flags,
3023 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
3029 case VPPCOM_ATTR_SET_FLAGS:
3030 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
3032 if (*flags & O_NONBLOCK)
3033 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
3035 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
3037 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
3038 " is_nonblocking = %u",
3039 getpid (), session_handle, *flags,
3040 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
3046 case VPPCOM_ATTR_GET_PEER_ADDR:
3047 if (PREDICT_TRUE (buffer && buflen &&
3048 (*buflen >= sizeof (*ep)) && ep->ip))
3050 ep->is_ip4 = session->transport.is_ip4;
3051 ep->port = session->transport.rmt_port;
3052 if (session->transport.is_ip4)
3053 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3054 sizeof (ip4_address_t));
3056 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3057 sizeof (ip6_address_t));
3058 *buflen = sizeof (*ep);
3059 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
3060 "addr = %U, port %u", getpid (),
3061 session_handle, ep->is_ip4, format_ip46_address,
3062 &session->transport.rmt_ip,
3063 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3064 clib_net_to_host_u16 (ep->port));
3070 case VPPCOM_ATTR_GET_LCL_ADDR:
3071 if (PREDICT_TRUE (buffer && buflen &&
3072 (*buflen >= sizeof (*ep)) && ep->ip))
3074 ep->is_ip4 = session->transport.is_ip4;
3075 ep->port = session->transport.lcl_port;
3076 if (session->transport.is_ip4)
3077 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
3078 sizeof (ip4_address_t));
3080 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
3081 sizeof (ip6_address_t));
3082 *buflen = sizeof (*ep);
3083 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
3084 " addr = %U port %d", getpid (),
3085 session_handle, ep->is_ip4, format_ip46_address,
3086 &session->transport.lcl_ip,
3087 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3088 clib_net_to_host_u16 (ep->port));
3094 case VPPCOM_ATTR_GET_LIBC_EPFD:
3095 rv = session->libc_epfd;
3096 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
3100 case VPPCOM_ATTR_SET_LIBC_EPFD:
3101 if (PREDICT_TRUE (buffer && buflen &&
3102 (*buflen == sizeof (session->libc_epfd))))
3104 session->libc_epfd = *(int *) buffer;
3105 *buflen = sizeof (session->libc_epfd);
3107 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
3108 "buflen %d", getpid (), session->libc_epfd, *buflen);
3114 case VPPCOM_ATTR_GET_PROTOCOL:
3115 if (buffer && buflen && (*buflen >= sizeof (int)))
3117 *(int *) buffer = session->session_type;
3118 *buflen = sizeof (int);
3120 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
3121 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
3128 case VPPCOM_ATTR_GET_LISTEN:
3129 if (buffer && buflen && (*buflen >= sizeof (int)))
3131 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3132 VCL_SESS_ATTR_LISTEN);
3133 *buflen = sizeof (int);
3135 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
3136 getpid (), *(int *) buffer, *buflen);
3142 case VPPCOM_ATTR_GET_ERROR:
3143 if (buffer && buflen && (*buflen >= sizeof (int)))
3145 *(int *) buffer = 0;
3146 *buflen = sizeof (int);
3148 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
3149 getpid (), *(int *) buffer, *buflen);
3155 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
3156 if (buffer && buflen && (*buflen >= sizeof (u32)))
3160 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
3161 session->tx_fifo ? session->tx_fifo->nitems :
3162 vcm->cfg.tx_fifo_size);
3163 *buflen = sizeof (u32);
3165 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
3166 "buflen %d, #VPP-TBD#", getpid (),
3167 *(size_t *) buffer, *(size_t *) buffer, *buflen);
3173 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
3174 if (buffer && buflen && (*buflen == sizeof (u32)))
3177 session->sndbuf_size = *(u32 *) buffer;
3178 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
3179 "buflen %d, #VPP-TBD#", getpid (),
3180 session->sndbuf_size, session->sndbuf_size, *buflen);
3186 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
3187 if (buffer && buflen && (*buflen >= sizeof (u32)))
3191 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
3192 session->rx_fifo ? session->rx_fifo->nitems :
3193 vcm->cfg.rx_fifo_size);
3194 *buflen = sizeof (u32);
3196 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
3197 "buflen %d, #VPP-TBD#", getpid (),
3198 *(size_t *) buffer, *(size_t *) buffer, *buflen);
3204 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
3205 if (buffer && buflen && (*buflen == sizeof (u32)))
3208 session->rcvbuf_size = *(u32 *) buffer;
3209 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
3210 "buflen %d, #VPP-TBD#", getpid (),
3211 session->sndbuf_size, session->sndbuf_size, *buflen);
3217 case VPPCOM_ATTR_GET_REUSEADDR:
3218 if (buffer && buflen && (*buflen >= sizeof (int)))
3221 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3222 VCL_SESS_ATTR_REUSEADDR);
3223 *buflen = sizeof (int);
3225 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
3226 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3232 case VPPCOM_ATTR_SET_REUSEADDR:
3233 if (buffer && buflen && (*buflen == sizeof (int)) &&
3234 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3237 if (*(int *) buffer)
3238 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
3240 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
3242 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
3243 " #VPP-TBD#", getpid (),
3244 VCL_SESS_ATTR_TEST (session->attr,
3245 VCL_SESS_ATTR_REUSEADDR), *buflen);
3251 case VPPCOM_ATTR_GET_REUSEPORT:
3252 if (buffer && buflen && (*buflen >= sizeof (int)))
3255 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3256 VCL_SESS_ATTR_REUSEPORT);
3257 *buflen = sizeof (int);
3259 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
3260 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3266 case VPPCOM_ATTR_SET_REUSEPORT:
3267 if (buffer && buflen && (*buflen == sizeof (int)) &&
3268 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3271 if (*(int *) buffer)
3272 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
3274 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
3276 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
3277 " #VPP-TBD#", getpid (),
3278 VCL_SESS_ATTR_TEST (session->attr,
3279 VCL_SESS_ATTR_REUSEPORT), *buflen);
3285 case VPPCOM_ATTR_GET_BROADCAST:
3286 if (buffer && buflen && (*buflen >= sizeof (int)))
3289 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3290 VCL_SESS_ATTR_BROADCAST);
3291 *buflen = sizeof (int);
3293 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
3294 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3300 case VPPCOM_ATTR_SET_BROADCAST:
3301 if (buffer && buflen && (*buflen == sizeof (int)))
3304 if (*(int *) buffer)
3305 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
3307 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
3309 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
3310 "#VPP-TBD#", getpid (),
3311 VCL_SESS_ATTR_TEST (session->attr,
3312 VCL_SESS_ATTR_BROADCAST), *buflen);
3318 case VPPCOM_ATTR_GET_V6ONLY:
3319 if (buffer && buflen && (*buflen >= sizeof (int)))
3322 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3323 VCL_SESS_ATTR_V6ONLY);
3324 *buflen = sizeof (int);
3326 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
3327 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3333 case VPPCOM_ATTR_SET_V6ONLY:
3334 if (buffer && buflen && (*buflen == sizeof (int)))
3337 if (*(int *) buffer)
3338 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3340 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3342 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
3343 "#VPP-TBD#", getpid (),
3344 VCL_SESS_ATTR_TEST (session->attr,
3345 VCL_SESS_ATTR_V6ONLY), *buflen);
3351 case VPPCOM_ATTR_GET_KEEPALIVE:
3352 if (buffer && buflen && (*buflen >= sizeof (int)))
3355 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3356 VCL_SESS_ATTR_KEEPALIVE);
3357 *buflen = sizeof (int);
3359 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3360 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3366 case VPPCOM_ATTR_SET_KEEPALIVE:
3367 if (buffer && buflen && (*buflen == sizeof (int)))
3370 if (*(int *) buffer)
3371 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3373 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3375 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3376 "#VPP-TBD#", getpid (),
3377 VCL_SESS_ATTR_TEST (session->attr,
3378 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3384 case VPPCOM_ATTR_GET_TCP_NODELAY:
3385 if (buffer && buflen && (*buflen >= sizeof (int)))
3388 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3389 VCL_SESS_ATTR_TCP_NODELAY);
3390 *buflen = sizeof (int);
3392 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3393 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3399 case VPPCOM_ATTR_SET_TCP_NODELAY:
3400 if (buffer && buflen && (*buflen == sizeof (int)))
3403 if (*(int *) buffer)
3404 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3406 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3408 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3409 "#VPP-TBD#", getpid (),
3410 VCL_SESS_ATTR_TEST (session->attr,
3411 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3417 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3418 if (buffer && buflen && (*buflen >= sizeof (int)))
3421 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3422 VCL_SESS_ATTR_TCP_KEEPIDLE);
3423 *buflen = sizeof (int);
3425 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3426 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3432 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3433 if (buffer && buflen && (*buflen == sizeof (int)))
3436 if (*(int *) buffer)
3437 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3439 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3441 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3442 "#VPP-TBD#", getpid (),
3443 VCL_SESS_ATTR_TEST (session->attr,
3444 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3450 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3451 if (buffer && buflen && (*buflen >= sizeof (int)))
3454 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3455 VCL_SESS_ATTR_TCP_KEEPINTVL);
3456 *buflen = sizeof (int);
3458 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3459 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3465 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3466 if (buffer && buflen && (*buflen == sizeof (int)))
3469 if (*(int *) buffer)
3470 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3472 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3474 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3475 "#VPP-TBD#", getpid (),
3476 VCL_SESS_ATTR_TEST (session->attr,
3477 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3483 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3484 if (buffer && buflen && (*buflen >= sizeof (u32)))
3487 *(u32 *) buffer = session->user_mss;
3488 *buflen = sizeof (int);
3490 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3491 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3497 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3498 if (buffer && buflen && (*buflen == sizeof (u32)))
3501 session->user_mss = *(u32 *) buffer;
3503 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3504 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3510 case VPPCOM_ATTR_GET_REFCNT:
3511 rv = vcl_session_get_refcnt (session);
3514 case VPPCOM_ATTR_SET_SHUT:
3515 if (*flags == SHUT_RD || *flags == SHUT_RDWR)
3516 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_SHUT_RD);
3517 if (*flags == SHUT_WR || *flags == SHUT_RDWR)
3518 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_SHUT_WR);
3521 case VPPCOM_ATTR_GET_SHUT:
3522 if (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_SHUT_RD))
3524 if (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_SHUT_WR))
3527 *(int *) buffer = SHUT_RD;
3528 else if (tmp_flags == 2)
3529 *(int *) buffer = SHUT_WR;
3530 else if (tmp_flags == 3)
3531 *(int *) buffer = SHUT_RDWR;
3532 *buflen = sizeof (int);
3543 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3544 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3546 vcl_worker_t *wrk = vcl_worker_get_current ();
3548 vcl_session_t *session = 0;
3552 session = vcl_session_get_w_handle (wrk, session_handle);
3553 if (PREDICT_FALSE (!session))
3555 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3556 getpid (), session_handle);
3557 return VPPCOM_EBADFD;
3559 ep->is_ip4 = session->transport.is_ip4;
3560 ep->port = session->transport.rmt_port;
3564 rv = vppcom_session_read (session_handle, buffer, buflen);
3565 else if (flags & MSG_PEEK)
3566 rv = vppcom_session_peek (session_handle, buffer, buflen);
3569 VDBG (0, "Unsupport flags for recvfrom %d", flags);
3570 return VPPCOM_EAFNOSUPPORT;
3575 if (session->transport.is_ip4)
3576 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3577 sizeof (ip4_address_t));
3579 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3580 sizeof (ip6_address_t));
3587 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3588 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3591 return VPPCOM_EINVAL;
3596 return VPPCOM_EINVAL;
3601 // TBD check the flags and do the right thing
3602 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3603 getpid (), flags, flags);
3606 return (vppcom_session_write_inline (session_handle, buffer, buflen, 1));
3610 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3612 vcl_worker_t *wrk = vcl_worker_get_current ();
3613 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3614 u32 i, keep_trying = 1;
3615 svm_msg_q_msg_t msg;
3619 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3620 getpid (), vp, n_sids, wait_for_time);
3623 return VPPCOM_EFAULT;
3627 vcl_session_t *session;
3629 /* Dequeue all events and drop all unhandled io events */
3630 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3632 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3633 vcl_handle_mq_event (wrk, e);
3634 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3636 vec_reset_length (wrk->unhandled_evts_vector);
3638 for (i = 0; i < n_sids; i++)
3640 session = vcl_session_get (wrk, vp[i].sh);
3643 vp[i].revents = POLLHUP;
3650 if (POLLIN & vp[i].events)
3652 rv = vppcom_session_read_ready (session);
3655 vp[i].revents |= POLLIN;
3662 case VPPCOM_ECONNRESET:
3663 vp[i].revents = POLLHUP;
3667 vp[i].revents = POLLERR;
3674 if (POLLOUT & vp[i].events)
3676 rv = vppcom_session_write_ready (session);
3679 vp[i].revents |= POLLOUT;
3686 case VPPCOM_ECONNRESET:
3687 vp[i].revents = POLLHUP;
3691 vp[i].revents = POLLERR;
3698 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3700 vp[i].revents = POLLNVAL;
3704 if (wait_for_time != -1)
3705 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3707 while ((num_ev == 0) && keep_trying);
3709 if (VPPCOM_DEBUG > 3)
3711 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3712 for (i = 0; i < n_sids; i++)
3714 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3715 ".revents 0x%x", getpid (), i, vp[i].sh, vp[i].sh,
3716 vp[i].events, vp[i].revents);
3723 vppcom_mq_epoll_fd (void)
3725 vcl_worker_t *wrk = vcl_worker_get_current ();
3726 return wrk->mqs_epfd;
3730 vppcom_session_index (vcl_session_handle_t session_handle)
3732 return session_handle & 0xFFFFFF;
3736 vppcom_session_worker (vcl_session_handle_t session_handle)
3738 return session_handle >> 24;
3742 vppcom_session_handle (uint32_t session_index)
3744 return (vcl_get_worker_index () << 24) | session_index;
3748 vppcom_worker_register (void)
3750 if (!vcl_worker_alloc_and_init ())
3751 return VPPCOM_EEXIST;
3753 if (vcl_worker_set_bapi ())
3754 return VPPCOM_EEXIST;
3756 if (vcl_worker_register_with_vpp ())
3757 return VPPCOM_EEXIST;
3763 vppcom_worker_index (void)
3765 return vcl_get_worker_index ();
3769 * fd.io coding-style-patch-verification: ON
3772 * eval: (c-set-style "gnu")