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;
27 vcl_wait_for_segment (u64 segment_handle)
29 vcl_worker_t *wrk = vcl_worker_get_current ();
30 u32 wait_for_seconds = 10, segment_index;
33 if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
36 timeout = clib_time_now (&wrk->clib_time) + wait_for_seconds;
37 while (clib_time_now (&wrk->clib_time) < timeout)
39 segment_index = vcl_segment_table_lookup (segment_handle);
40 if (segment_index != VCL_INVALID_SEGMENT_INDEX)
48 vppcom_session_state_str (session_state_t state)
70 case STATE_VPP_CLOSING:
71 st = "STATE_VPP_CLOSING";
74 case STATE_DISCONNECT:
75 st = "STATE_DISCONNECT";
91 format_ip4_address (u8 * s, va_list * args)
93 u8 *a = va_arg (*args, u8 *);
94 return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
98 format_ip6_address (u8 * s, va_list * args)
100 ip6_address_t *a = va_arg (*args, ip6_address_t *);
101 u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon;
103 i_max_n_zero = ARRAY_LEN (a->as_u16);
105 i_first_zero = i_max_n_zero;
107 for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
109 u32 is_zero = a->as_u16[i] == 0;
110 if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16))
116 if ((!is_zero && n_zeros > max_n_zeros)
117 || (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros))
119 i_max_n_zero = i_first_zero;
120 max_n_zeros = n_zeros;
121 i_first_zero = ARRAY_LEN (a->as_u16);
126 last_double_colon = 0;
127 for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
129 if (i == i_max_n_zero && max_n_zeros > 1)
131 s = format (s, "::");
132 i += max_n_zeros - 1;
133 last_double_colon = 1;
137 s = format (s, "%s%x",
138 (last_double_colon || i == 0) ? "" : ":",
139 clib_net_to_host_u16 (a->as_u16[i]));
140 last_double_colon = 0;
147 /* Format an IP46 address. */
149 format_ip46_address (u8 * s, va_list * args)
151 ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
152 ip46_type_t type = va_arg (*args, ip46_type_t);
158 is_ip4 = ip46_address_is_ip4 (ip46);
169 format (s, "%U", format_ip4_address, &ip46->ip4) :
170 format (s, "%U", format_ip6_address, &ip46->ip6);
174 * VPPCOM Utility Functions
179 vcl_session_vpp_evt_q (vcl_worker_t * wrk, vcl_session_t * s)
181 if (vcl_session_is_ct (s))
182 return wrk->vpp_event_queues[0];
184 return wrk->vpp_event_queues[s->vpp_thread_index];
188 vcl_send_session_accepted_reply (svm_msg_q_t * mq, u32 context,
189 session_handle_t handle, int retval)
191 app_session_evt_t _app_evt, *app_evt = &_app_evt;
192 session_accepted_reply_msg_t *rmp;
193 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_ACCEPTED_REPLY);
194 rmp = (session_accepted_reply_msg_t *) app_evt->evt->data;
195 rmp->handle = handle;
196 rmp->context = context;
197 rmp->retval = retval;
198 app_send_ctrl_evt_to_vpp (mq, app_evt);
202 vcl_send_session_disconnected_reply (svm_msg_q_t * mq, u32 context,
203 session_handle_t handle, int retval)
205 app_session_evt_t _app_evt, *app_evt = &_app_evt;
206 session_disconnected_reply_msg_t *rmp;
207 app_alloc_ctrl_evt_to_vpp (mq, app_evt,
208 SESSION_CTRL_EVT_DISCONNECTED_REPLY);
209 rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
210 rmp->handle = handle;
211 rmp->context = context;
212 rmp->retval = retval;
213 app_send_ctrl_evt_to_vpp (mq, app_evt);
217 vcl_send_session_reset_reply (svm_msg_q_t * mq, u32 context,
218 session_handle_t handle, int retval)
220 app_session_evt_t _app_evt, *app_evt = &_app_evt;
221 session_reset_reply_msg_t *rmp;
222 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_RESET_REPLY);
223 rmp = (session_reset_reply_msg_t *) app_evt->evt->data;
224 rmp->handle = handle;
225 rmp->context = context;
226 rmp->retval = retval;
227 app_send_ctrl_evt_to_vpp (mq, app_evt);
231 vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp)
233 vcl_session_t *session, *listen_session;
234 svm_fifo_t *rx_fifo, *tx_fifo;
238 session = vcl_session_alloc (wrk);
240 listen_session = vcl_session_table_lookup_listener (wrk,
241 mp->listener_handle);
245 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
246 clib_warning ("VCL<%d>: ERROR: couldn't find listen session: "
247 "unknown vpp listener handle %llx",
248 getpid (), mp->listener_handle);
249 vcl_send_session_accepted_reply (evt_q, mp->context, mp->handle,
250 VNET_API_ERROR_INVALID_ARGUMENT);
251 vcl_session_free (wrk, session);
252 return VCL_INVALID_SESSION_INDEX;
255 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
256 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
258 if (mp->server_event_queue_address)
260 session->vpp_evt_q = uword_to_pointer (mp->client_event_queue_address,
262 session->our_evt_q = uword_to_pointer (mp->server_event_queue_address,
264 if (vcl_wait_for_segment (mp->segment_handle))
266 clib_warning ("segment for session %u couldn't be mounted!",
267 session->session_index);
268 return VCL_INVALID_SESSION_INDEX;
270 rx_fifo->master_session_index = session->session_index;
271 tx_fifo->master_session_index = session->session_index;
272 rx_fifo->master_thread_index = vcl_get_worker_index ();
273 tx_fifo->master_thread_index = vcl_get_worker_index ();
274 vec_validate (wrk->vpp_event_queues, 0);
275 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
276 wrk->vpp_event_queues[0] = evt_q;
280 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
282 rx_fifo->client_session_index = session->session_index;
283 tx_fifo->client_session_index = session->session_index;
284 rx_fifo->client_thread_index = vcl_get_worker_index ();
285 tx_fifo->client_thread_index = vcl_get_worker_index ();
286 vpp_wrk_index = tx_fifo->master_thread_index;
287 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
288 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
291 session->vpp_handle = mp->handle;
292 session->vpp_thread_index = rx_fifo->master_thread_index;
293 session->client_context = mp->context;
294 session->rx_fifo = rx_fifo;
295 session->tx_fifo = tx_fifo;
297 session->session_state = STATE_ACCEPT;
298 session->transport.rmt_port = mp->port;
299 session->transport.is_ip4 = mp->is_ip4;
300 clib_memcpy_fast (&session->transport.rmt_ip, mp->ip,
301 sizeof (ip46_address_t));
303 vcl_session_table_add_vpp_handle (wrk, mp->handle, session->session_index);
304 session->transport.lcl_port = listen_session->transport.lcl_port;
305 session->transport.lcl_ip = listen_session->transport.lcl_ip;
306 session->session_type = listen_session->session_type;
307 session->is_dgram = session->session_type == VPPCOM_PROTO_UDP;
309 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: client accept request from %s"
310 " address %U port %d queue %p!", getpid (), mp->handle,
311 session->session_index,
312 mp->is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &mp->ip,
313 mp->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
314 clib_net_to_host_u16 (mp->port), session->vpp_evt_q);
315 vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index);
317 return session->session_index;
321 vcl_session_connected_handler (vcl_worker_t * wrk,
322 session_connected_msg_t * mp)
324 u32 session_index, vpp_wrk_index;
325 svm_fifo_t *rx_fifo, *tx_fifo;
326 vcl_session_t *session = 0;
329 session_index = mp->context;
330 session = vcl_session_get (wrk, session_index);
333 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
334 "Invalid session index (%u)!",
335 getpid (), mp->handle, session_index);
336 return VCL_INVALID_SESSION_INDEX;
340 clib_warning ("VCL<%d>: ERROR: sid %u: connect failed! %U", getpid (),
341 session_index, format_api_error, ntohl (mp->retval));
342 session->session_state = STATE_FAILED;
343 session->vpp_handle = mp->handle;
344 return session_index;
347 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
348 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
349 if (vcl_wait_for_segment (mp->segment_handle))
351 clib_warning ("segment for session %u couldn't be mounted!",
352 session->session_index);
353 return VCL_INVALID_SESSION_INDEX;
356 rx_fifo->client_session_index = session_index;
357 tx_fifo->client_session_index = session_index;
358 rx_fifo->client_thread_index = vcl_get_worker_index ();
359 tx_fifo->client_thread_index = vcl_get_worker_index ();
361 if (mp->client_event_queue_address)
363 session->vpp_evt_q = uword_to_pointer (mp->server_event_queue_address,
365 session->our_evt_q = uword_to_pointer (mp->client_event_queue_address,
368 vec_validate (wrk->vpp_event_queues, 0);
369 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
370 wrk->vpp_event_queues[0] = evt_q;
374 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
376 vpp_wrk_index = tx_fifo->master_thread_index;
377 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
378 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
381 session->rx_fifo = rx_fifo;
382 session->tx_fifo = tx_fifo;
383 session->vpp_handle = mp->handle;
384 session->vpp_thread_index = rx_fifo->master_thread_index;
385 session->transport.is_ip4 = mp->is_ip4;
386 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
387 sizeof (session->transport.lcl_ip));
388 session->transport.lcl_port = mp->lcl_port;
389 session->session_state = STATE_CONNECT;
391 /* Add it to lookup table */
392 vcl_session_table_add_vpp_handle (wrk, mp->handle, session_index);
394 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: connect succeeded! "
395 "session_rx_fifo %p, refcnt %d, session_tx_fifo %p, refcnt %d",
396 getpid (), mp->handle, session_index, session->rx_fifo,
397 session->rx_fifo->refcnt, session->tx_fifo, session->tx_fifo->refcnt);
399 return session_index;
403 vcl_flag_accepted_session (vcl_session_t * session, u64 handle, u32 flags)
405 vcl_session_msg_t *accepted_msg;
408 for (i = 0; i < vec_len (session->accept_evts_fifo); i++)
410 accepted_msg = &session->accept_evts_fifo[i];
411 if (accepted_msg->accepted_msg.handle == handle)
413 accepted_msg->flags |= flags;
421 vcl_session_reset_handler (vcl_worker_t * wrk,
422 session_reset_msg_t * reset_msg)
424 vcl_session_t *session;
427 sid = vcl_session_index_from_vpp_handle (wrk, reset_msg->handle);
428 session = vcl_session_get (wrk, sid);
431 VDBG (0, "request to reset unknown handle 0x%llx", reset_msg->handle);
432 return VCL_INVALID_SESSION_INDEX;
435 /* Caught a reset before actually accepting the session */
436 if (session->session_state == STATE_LISTEN)
439 if (!vcl_flag_accepted_session (session, reset_msg->handle,
440 VCL_ACCEPTED_F_RESET))
441 VDBG (0, "session was not accepted!");
442 return VCL_INVALID_SESSION_INDEX;
445 session->session_state = STATE_DISCONNECT;
446 VDBG (0, "reset session %u [0x%llx]", sid, reset_msg->handle);
451 vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp)
453 vcl_session_t *session;
454 u32 sid = mp->context;
456 session = vcl_session_get (wrk, sid);
459 VERR ("vpp handle 0x%llx, sid %u: bind failed: %U", mp->handle, sid,
460 format_api_error, mp->retval);
463 session->session_state = STATE_FAILED;
464 session->vpp_handle = mp->handle;
469 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
470 "Invalid session index (%u)!",
471 getpid (), mp->handle, sid);
472 return VCL_INVALID_SESSION_INDEX;
476 session->vpp_handle = mp->handle;
477 session->transport.is_ip4 = mp->lcl_is_ip4;
478 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
479 sizeof (ip46_address_t));
480 session->transport.lcl_port = mp->lcl_port;
481 vcl_session_table_add_listener (wrk, mp->handle, sid);
482 session->session_state = STATE_LISTEN;
484 if (session->is_dgram)
486 svm_fifo_t *rx_fifo, *tx_fifo;
487 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
488 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
489 rx_fifo->client_session_index = sid;
490 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
491 tx_fifo->client_session_index = sid;
492 session->rx_fifo = rx_fifo;
493 session->tx_fifo = tx_fifo;
496 VDBG (0, "session %u [0x%llx]: listen succeeded!", sid, mp->handle);
500 static vcl_session_t *
501 vcl_session_accepted (vcl_worker_t * wrk, session_accepted_msg_t * msg)
503 vcl_session_msg_t *vcl_msg;
504 vcl_session_t *session;
506 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
507 if (PREDICT_FALSE (session != 0))
508 VWRN ("session overlap handle %lu state %u!", msg->handle,
509 session->session_state);
511 session = vcl_session_table_lookup_listener (wrk, msg->listener_handle);
514 VERR ("couldn't find listen session: listener handle %llx",
515 msg->listener_handle);
519 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
520 vcl_msg->accepted_msg = *msg;
521 /* Session handle points to listener until fully accepted by app */
522 vcl_session_table_add_vpp_handle (wrk, msg->handle, session->session_index);
527 static vcl_session_t *
528 vcl_session_disconnected_handler (vcl_worker_t * wrk,
529 session_disconnected_msg_t * msg)
531 vcl_session_t *session;
533 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
536 VDBG (0, "request to disconnect unknown handle 0x%llx", msg->handle);
540 /* Caught a disconnect before actually accepting the session */
541 if (session->session_state == STATE_LISTEN)
544 if (!vcl_flag_accepted_session (session, msg->handle,
545 VCL_ACCEPTED_F_CLOSED))
546 VDBG (0, "session was not accepted!");
550 session->session_state = STATE_VPP_CLOSING;
555 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
557 session_disconnected_msg_t *disconnected_msg;
558 vcl_session_t *session;
560 switch (e->event_type)
562 case FIFO_EVENT_APP_RX:
563 case FIFO_EVENT_APP_TX:
564 case SESSION_IO_EVT_CT_RX:
565 case SESSION_IO_EVT_CT_TX:
566 vec_add1 (wrk->unhandled_evts_vector, *e);
568 case SESSION_CTRL_EVT_ACCEPTED:
569 vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
571 case SESSION_CTRL_EVT_CONNECTED:
572 vcl_session_connected_handler (wrk,
573 (session_connected_msg_t *) e->data);
575 case SESSION_CTRL_EVT_DISCONNECTED:
576 disconnected_msg = (session_disconnected_msg_t *) e->data;
577 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
580 session->session_state = STATE_DISCONNECT;
581 VDBG (0, "disconnected session %u [0x%llx]", session->session_index,
582 session->vpp_handle);
584 case SESSION_CTRL_EVT_RESET:
585 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
587 case SESSION_CTRL_EVT_BOUND:
588 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
591 clib_warning ("unhandled %u", e->event_type);
597 vppcom_wait_for_session_state_change (u32 session_index,
598 session_state_t state,
601 vcl_worker_t *wrk = vcl_worker_get_current ();
602 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
603 vcl_session_t *volatile session;
609 session = vcl_session_get (wrk, session_index);
610 if (PREDICT_FALSE (!session))
612 return VPPCOM_EBADFD;
614 if (session->session_state & state)
618 if (session->session_state & STATE_FAILED)
620 return VPPCOM_ECONNREFUSED;
623 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
628 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
629 vcl_handle_mq_event (wrk, e);
630 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
632 while (clib_time_now (&wrk->clib_time) < timeout);
634 VDBG (0, "timeout waiting for state 0x%x (%s)", state,
635 vppcom_session_state_str (state));
636 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
638 return VPPCOM_ETIMEDOUT;
642 vppcom_app_session_enable (void)
646 if (vcm->app_state != STATE_APP_ENABLED)
648 vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
649 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
650 if (PREDICT_FALSE (rv))
652 VDBG (0, "VCL<%d>: application session enable timed out! "
653 "returning %d (%s)", getpid (), rv, vppcom_retval_str (rv));
661 vppcom_app_attach (void)
665 vppcom_app_send_attach ();
666 rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED);
667 if (PREDICT_FALSE (rv))
669 VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)",
670 getpid (), rv, vppcom_retval_str (rv));
678 vppcom_session_unbind (u32 session_handle)
680 vcl_worker_t *wrk = vcl_worker_get_current ();
681 vcl_session_t *session = 0;
684 session = vcl_session_get_w_handle (wrk, session_handle);
686 return VPPCOM_EBADFD;
688 vpp_handle = session->vpp_handle;
689 vcl_session_table_del_listener (wrk, vpp_handle);
690 session->vpp_handle = ~0;
691 session->session_state = STATE_DISCONNECT;
693 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state"
694 " 0x%x (%s)", getpid (), vpp_handle, session_handle, STATE_DISCONNECT,
695 vppcom_session_state_str (STATE_DISCONNECT));
696 vcl_evt (VCL_EVT_UNBIND, session);
697 vppcom_send_unbind_sock (vpp_handle);
703 vppcom_session_disconnect (u32 session_handle)
705 vcl_worker_t *wrk = vcl_worker_get_current ();
706 svm_msg_q_t *vpp_evt_q;
707 vcl_session_t *session;
708 session_state_t state;
711 session = vcl_session_get_w_handle (wrk, session_handle);
713 return VPPCOM_EBADFD;
715 vpp_handle = session->vpp_handle;
716 state = session->session_state;
718 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (),
719 vpp_handle, session_handle, state, vppcom_session_state_str (state));
721 if (PREDICT_FALSE (state & STATE_LISTEN))
723 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
724 "Cannot disconnect a listen socket!",
725 getpid (), vpp_handle, session_handle);
726 return VPPCOM_EBADFD;
729 if (state & STATE_VPP_CLOSING)
731 vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
732 vcl_send_session_disconnected_reply (vpp_evt_q, wrk->my_client_index,
734 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect "
735 "REPLY...", getpid (), vpp_handle, session_handle);
739 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...",
740 getpid (), vpp_handle, session_handle);
741 vppcom_send_disconnect_session (vpp_handle);
748 vcl_cleanup_bapi (void)
750 socket_client_main_t *scm = &socket_client_main;
751 api_main_t *am = &api_main;
753 am->my_client_index = ~0;
754 am->my_registration = 0;
755 am->vl_input_queue = 0;
756 am->msg_index_by_name_and_crc = 0;
759 vl_client_api_unmap ();
763 vcl_cleanup_forked_child (vcl_worker_t * wrk, vcl_worker_t * child_wrk)
765 vcl_worker_t *sub_child;
768 if (child_wrk->forked_child != ~0)
770 sub_child = vcl_worker_get_if_valid (child_wrk->forked_child);
773 /* Wait a bit, maybe the process is going away */
774 while (kill (sub_child->current_pid, 0) >= 0 && tries++ < 50)
776 if (kill (sub_child->current_pid, 0) < 0)
777 vcl_cleanup_forked_child (child_wrk, sub_child);
780 vcl_worker_cleanup (child_wrk, 1 /* notify vpp */ );
781 VDBG (0, "Cleaned up wrk %u", child_wrk->wrk_index);
782 wrk->forked_child = ~0;
785 static struct sigaction old_sa;
788 vcl_intercept_sigchld_handler (int signum, siginfo_t * si, void *uc)
790 vcl_worker_t *wrk, *child_wrk;
792 if (vcl_get_worker_index () == ~0)
795 if (sigaction (SIGCHLD, &old_sa, 0))
797 VERR ("couldn't restore sigchld");
801 wrk = vcl_worker_get_current ();
802 if (wrk->forked_child == ~0)
805 child_wrk = vcl_worker_get_if_valid (wrk->forked_child);
809 if (si && si->si_pid != child_wrk->current_pid)
811 VDBG (0, "unexpected child pid %u", si->si_pid);
814 vcl_cleanup_forked_child (wrk, child_wrk);
817 if (old_sa.sa_flags & SA_SIGINFO)
819 void (*fn) (int, siginfo_t *, void *) = old_sa.sa_sigaction;
824 void (*fn) (int) = old_sa.sa_handler;
831 vcl_incercept_sigchld ()
834 clib_memset (&sa, 0, sizeof (sa));
835 sa.sa_sigaction = vcl_intercept_sigchld_handler;
836 sa.sa_flags = SA_SIGINFO;
837 if (sigaction (SIGCHLD, &sa, &old_sa))
839 VERR ("couldn't intercept sigchld");
845 vcl_app_pre_fork (void)
847 vcl_incercept_sigchld ();
851 vcl_app_fork_child_handler (void)
853 int rv, parent_wrk_index;
854 vcl_worker_t *parent_wrk;
857 parent_wrk_index = vcl_get_worker_index ();
858 VDBG (0, "initializing forked child with parent wrk %u", parent_wrk_index);
863 vcl_set_worker_index (~0);
864 if (!vcl_worker_alloc_and_init ())
865 VERR ("couldn't allocate new worker");
868 * Attach to binary api
870 child_name = format (0, "%v-child-%u%c", vcm->app_name, getpid (), 0);
872 vppcom_api_hookup ();
873 vcm->app_state = STATE_APP_START;
874 rv = vppcom_connect_to_vpp ((char *) child_name);
875 vec_free (child_name);
878 VERR ("couldn't connect to VPP!");
883 * Register worker with vpp and share sessions
885 vcl_worker_register_with_vpp ();
886 parent_wrk = vcl_worker_get (parent_wrk_index);
887 vcl_worker_share_sessions (parent_wrk);
888 parent_wrk->forked_child = vcl_get_worker_index ();
890 VDBG (0, "forked child main worker initialized");
895 vcl_app_fork_parent_handler (void)
905 * Notify vpp of the disconnect and mark the worker as free. If we're the
906 * last worker, do a full cleanup otherwise, since we're probably a forked
907 * child, avoid syscalls as much as possible. We might've lost privileges.
910 vppcom_app_exit (void)
912 if (!pool_elts (vcm->workers))
914 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
915 vcl_set_worker_index (~0);
917 if (vec_len (vcm->workers) == 1)
918 vl_client_disconnect_from_vlib ();
920 vl_client_send_disconnect (1 /* vpp should cleanup */ );
924 * VPPCOM Public API functions
927 vppcom_app_create (char *app_name)
929 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
934 VDBG (1, "already initialized");
935 return VPPCOM_EEXIST;
939 vppcom_cfg (&vcm->cfg);
942 vcm->main_cpu = pthread_self ();
943 vcm->main_pid = getpid ();
944 vcm->app_name = format (0, "%s", app_name);
945 vppcom_init_error_string_table ();
946 svm_fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva,
947 20 /* timeout in secs */ );
948 pool_alloc (vcm->workers, vcl_cfg->max_workers);
949 clib_spinlock_init (&vcm->workers_lock);
950 clib_rwlock_init (&vcm->segment_table_lock);
951 pthread_atfork (vcl_app_pre_fork, vcl_app_fork_parent_handler,
952 vcl_app_fork_child_handler);
953 atexit (vppcom_app_exit);
955 /* Allocate default worker */
956 vcl_worker_alloc_and_init ();
958 /* API hookup and connect to VPP */
959 vppcom_api_hookup ();
961 vcm->app_state = STATE_APP_START;
962 rv = vppcom_connect_to_vpp (app_name);
965 VERR ("couldn't connect to VPP!");
968 VDBG (0, "sending session enable");
969 rv = vppcom_app_session_enable ();
972 VERR ("vppcom_app_session_enable() failed!");
976 VDBG (0, "sending app attach");
977 rv = vppcom_app_attach ();
980 VERR ("vppcom_app_attach() failed!");
984 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
985 vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
991 vppcom_app_destroy (void)
994 f64 orig_app_timeout;
996 if (!pool_elts (vcm->workers))
999 vcl_evt (VCL_EVT_DETACH, vcm);
1001 if (pool_elts (vcm->workers) == 1)
1003 vppcom_app_send_detach ();
1004 orig_app_timeout = vcm->cfg.app_timeout;
1005 vcm->cfg.app_timeout = 2.0;
1006 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
1007 vcm->cfg.app_timeout = orig_app_timeout;
1008 if (PREDICT_FALSE (rv))
1009 VDBG (0, "application detach timed out! returning %d (%s)", rv,
1010 vppcom_retval_str (rv));
1011 vec_free (vcm->app_name);
1012 vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ );
1016 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
1019 vcl_set_worker_index (~0);
1020 vcl_elog_stop (vcm);
1021 vl_client_disconnect_from_vlib ();
1025 vppcom_session_create (u8 proto, u8 is_nonblocking)
1027 vcl_worker_t *wrk = vcl_worker_get_current ();
1028 vcl_session_t *session;
1030 session = vcl_session_alloc (wrk);
1032 session->session_type = proto;
1033 session->session_state = STATE_START;
1034 session->vpp_handle = ~0;
1035 session->is_dgram = proto == VPPCOM_PROTO_UDP;
1038 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
1040 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
1041 is_nonblocking, session_index);
1043 VDBG (0, "created sid %u", session->session_index);
1045 return vcl_session_handle (session);
1049 vppcom_session_close (uint32_t session_handle)
1051 vcl_worker_t *wrk = vcl_worker_get_current ();
1052 u8 is_vep, do_disconnect = 1;
1053 vcl_session_t *session = 0;
1054 session_state_t state;
1055 u32 next_sh, vep_sh;
1059 session = vcl_session_get_w_handle (wrk, session_handle);
1061 return VPPCOM_EBADFD;
1063 if (session->shared_index != ~0)
1064 do_disconnect = vcl_worker_unshare_session (wrk, session);
1066 is_vep = session->is_vep;
1067 next_sh = session->vep.next_sh;
1068 vep_sh = session->vep.vep_sh;
1069 state = session->session_state;
1070 vpp_handle = session->vpp_handle;
1072 VDBG (1, "closing session handle %u vpp handle %u", session_handle,
1077 while (next_sh != ~0)
1079 rv = vppcom_epoll_ctl (session_handle, EPOLL_CTL_DEL, next_sh, 0);
1080 if (PREDICT_FALSE (rv < 0))
1081 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u"
1082 " failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
1083 vppcom_retval_str (rv));
1085 next_sh = session->vep.next_sh;
1090 if (session->is_vep_session)
1092 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, session_handle, 0);
1094 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u "
1095 "failed! rv %d (%s)", vpp_handle, session_handle, vep_sh,
1096 rv, vppcom_retval_str (rv));
1102 if (state & STATE_LISTEN)
1104 rv = vppcom_session_unbind (session_handle);
1105 if (PREDICT_FALSE (rv < 0))
1106 VDBG (0, "vpp handle 0x%llx, sid %u: listener unbind failed! "
1107 "rv %d (%s)", vpp_handle, session_handle, rv,
1108 vppcom_retval_str (rv));
1110 else if (state & STATE_OPEN)
1112 rv = vppcom_session_disconnect (session_handle);
1113 if (PREDICT_FALSE (rv < 0))
1114 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1115 "session disconnect failed! rv %d (%s)",
1116 getpid (), vpp_handle, session_handle,
1117 rv, vppcom_retval_str (rv));
1119 else if (state == STATE_DISCONNECT)
1121 svm_msg_q_t *mq = vcl_session_vpp_evt_q (wrk, session);
1122 vcl_send_session_reset_reply (mq, wrk->my_client_index,
1123 session->vpp_handle, 0);
1129 if (vcl_session_is_ct (session))
1131 vcl_cut_through_registration_t *ctr;
1134 mq_addr = pointer_to_uword (session->our_evt_q);
1135 ctr = vcl_ct_registration_lock_and_lookup (wrk, mq_addr);
1137 if (ctr->epoll_evt_conn_index != ~0)
1138 vcl_mq_epoll_del_evfd (wrk, ctr->epoll_evt_conn_index);
1139 VDBG (0, "Removing ct registration %u",
1140 vcl_ct_registration_index (wrk, ctr));
1141 vcl_ct_registration_del (wrk, ctr);
1142 vcl_ct_registration_lookup_del (wrk, mq_addr);
1143 vcl_ct_registration_unlock (wrk);
1146 if (vpp_handle != ~0)
1148 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
1150 vcl_session_free (wrk, session);
1152 VDBG (0, "session handle %u [0x%llx] removed", session_handle, vpp_handle);
1154 vcl_evt (VCL_EVT_CLOSE, session, rv);
1160 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1162 vcl_worker_t *wrk = vcl_worker_get_current ();
1163 vcl_session_t *session = 0;
1166 return VPPCOM_EINVAL;
1168 session = vcl_session_get_w_handle (wrk, session_handle);
1170 return VPPCOM_EBADFD;
1172 if (session->is_vep)
1174 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1175 "bind to an epoll session!", getpid (), session_handle);
1176 return VPPCOM_EBADFD;
1179 session->transport.is_ip4 = ep->is_ip4;
1181 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1182 sizeof (ip4_address_t));
1184 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1185 sizeof (ip6_address_t));
1186 session->transport.lcl_port = ep->port;
1188 VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
1189 "proto %s", getpid (), session_handle,
1190 session->transport.is_ip4 ? "IPv4" : "IPv6",
1191 format_ip46_address, &session->transport.lcl_ip,
1192 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1193 clib_net_to_host_u16 (session->transport.lcl_port),
1194 vppcom_proto_str (session->session_type));
1195 vcl_evt (VCL_EVT_BIND, session);
1197 if (session->session_type == VPPCOM_PROTO_UDP)
1198 vppcom_session_listen (session_handle, 10);
1204 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1206 vcl_worker_t *wrk = vcl_worker_get_current ();
1207 vcl_session_t *listen_session = 0;
1208 u64 listen_vpp_handle;
1211 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1212 if (!listen_session || listen_session->is_vep)
1213 return VPPCOM_EBADFD;
1215 if (q_len == 0 || q_len == ~0)
1216 q_len = vcm->cfg.listen_queue_size;
1218 listen_vpp_handle = listen_session->vpp_handle;
1219 if (listen_session->session_state & STATE_LISTEN)
1221 VDBG (0, "session %u [0x%llx]: already in listen state!",
1222 listen_sh, listen_vpp_handle);
1226 VDBG (0, "session %u [0x%llx]: sending vpp listen request...",
1227 listen_sh, listen_vpp_handle);
1230 * Send listen request to vpp and wait for reply
1232 vppcom_send_bind_sock (listen_session);
1233 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1235 vcm->cfg.session_timeout);
1237 if (PREDICT_FALSE (rv))
1239 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1240 VDBG (0, "session %u [0x%llx]: listen failed! returning %d (%s)",
1241 listen_sh, listen_session->vpp_handle, rv,
1242 vppcom_retval_str (rv));
1250 vppcom_session_tls_add_cert (uint32_t session_handle, char *cert,
1254 vcl_worker_t *wrk = vcl_worker_get_current ();
1255 vcl_session_t *session = 0;
1257 session = vcl_session_get_w_handle (wrk, session_handle);
1259 return VPPCOM_EBADFD;
1261 if (cert_len == 0 || cert_len == ~0)
1262 return VPPCOM_EBADFD;
1265 * Send listen request to vpp and wait for reply
1267 vppcom_send_application_tls_cert_add (session, cert, cert_len);
1274 vppcom_session_tls_add_key (uint32_t session_handle, char *key,
1278 vcl_worker_t *wrk = vcl_worker_get_current ();
1279 vcl_session_t *session = 0;
1281 session = vcl_session_get_w_handle (wrk, session_handle);
1283 return VPPCOM_EBADFD;
1285 if (key_len == 0 || key_len == ~0)
1286 return VPPCOM_EBADFD;
1289 * Send listen request to vpp and wait for reply
1291 vppcom_send_application_tls_key_add (session, key, key_len);
1299 validate_args_session_accept_ (vcl_worker_t * wrk,
1300 vcl_session_t * listen_session)
1302 /* Input validation - expects spinlock on sessions_lockp */
1303 if (listen_session->is_vep)
1305 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1306 "epoll session!", getpid (),
1307 listen_session->session_index);
1308 return VPPCOM_EBADFD;
1311 if (listen_session->session_state != STATE_LISTEN)
1313 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1314 "not in listen state! state 0x%x (%s)", getpid (),
1315 listen_session->vpp_handle, listen_session->session_index,
1316 listen_session->session_state,
1317 vppcom_session_state_str (listen_session->session_state));
1318 return VPPCOM_EBADFD;
1324 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1327 u32 client_session_index = ~0, listen_session_index, accept_flags = 0;
1328 vcl_worker_t *wrk = vcl_worker_get_current ();
1329 session_accepted_msg_t accepted_msg;
1330 vcl_session_t *listen_session = 0;
1331 vcl_session_t *client_session = 0;
1332 svm_msg_q_t *vpp_evt_q;
1333 vcl_session_msg_t *evt;
1334 u64 listen_vpp_handle;
1335 svm_msg_q_msg_t msg;
1340 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1341 if (!listen_session)
1342 return VPPCOM_EBADFD;
1344 listen_session_index = listen_session->session_index;
1345 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1348 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1350 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1351 accept_flags = evt->flags;
1352 accepted_msg = evt->accepted_msg;
1356 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1357 VCL_SESS_ATTR_NONBLOCK);
1358 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1359 return VPPCOM_EAGAIN;
1363 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1364 return VPPCOM_EAGAIN;
1366 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1367 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1369 clib_warning ("discarded event: %u", e->event_type);
1370 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1373 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1374 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1380 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1381 listen_session = vcl_session_get (wrk, listen_session_index);
1382 client_session = vcl_session_get (wrk, client_session_index);
1384 if (flags & O_NONBLOCK)
1385 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1387 listen_vpp_handle = listen_session->vpp_handle;
1388 VDBG (1, "vpp handle 0x%llx, sid %u: Got a client request! "
1389 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1390 listen_vpp_handle, listen_session_handle,
1391 client_session->vpp_handle, client_session_index,
1392 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1393 VCL_SESS_ATTR_NONBLOCK));
1397 ep->is_ip4 = client_session->transport.is_ip4;
1398 ep->port = client_session->transport.rmt_port;
1399 if (client_session->transport.is_ip4)
1400 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1401 sizeof (ip4_address_t));
1403 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1404 sizeof (ip6_address_t));
1407 if (accepted_msg.server_event_queue_address)
1408 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1411 vpp_evt_q = client_session->vpp_evt_q;
1413 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1414 client_session->vpp_handle, 0);
1416 VDBG (0, "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u "
1417 "local: %U:%u", listen_session_handle, listen_vpp_handle,
1418 client_session_index, client_session->vpp_handle,
1419 format_ip46_address, &client_session->transport.rmt_ip,
1420 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1421 clib_net_to_host_u16 (client_session->transport.rmt_port),
1422 format_ip46_address, &client_session->transport.lcl_ip,
1423 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1424 clib_net_to_host_u16 (client_session->transport.lcl_port));
1425 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1426 client_session_index);
1429 * Session might have been closed already
1433 if (accept_flags & VCL_ACCEPTED_F_CLOSED)
1434 client_session->session_state = STATE_VPP_CLOSING;
1435 else if (accept_flags & VCL_ACCEPTED_F_RESET)
1436 client_session->session_state = STATE_DISCONNECT;
1438 return vcl_session_handle (client_session);
1442 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1444 vcl_worker_t *wrk = vcl_worker_get_current ();
1445 vcl_session_t *session = 0;
1449 session = vcl_session_get_w_handle (wrk, session_handle);
1451 return VPPCOM_EBADFD;
1452 session_index = session->session_index;
1454 if (PREDICT_FALSE (session->is_vep))
1456 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1457 "connect on an epoll session!", getpid (),
1459 return VPPCOM_EBADFD;
1462 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1464 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
1465 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1466 getpid (), session->vpp_handle, session_handle,
1467 session->transport.is_ip4 ? "IPv4" : "IPv6",
1468 format_ip46_address,
1469 &session->transport.rmt_ip, session->transport.is_ip4 ?
1470 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1471 clib_net_to_host_u16 (session->transport.rmt_port),
1472 vppcom_proto_str (session->session_type), session->session_state,
1473 vppcom_session_state_str (session->session_state));
1477 session->transport.is_ip4 = server_ep->is_ip4;
1478 if (session->transport.is_ip4)
1479 clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
1480 sizeof (ip4_address_t));
1482 clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
1483 sizeof (ip6_address_t));
1484 session->transport.rmt_port = server_ep->port;
1486 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
1488 getpid (), session->vpp_handle, session_handle,
1489 session->transport.is_ip4 ? "IPv4" : "IPv6",
1490 format_ip46_address,
1491 &session->transport.rmt_ip, session->transport.is_ip4 ?
1492 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1493 clib_net_to_host_u16 (session->transport.rmt_port),
1494 vppcom_proto_str (session->session_type));
1497 * Send connect request and wait for reply from vpp
1499 vppcom_send_connect_sock (session);
1500 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1501 vcm->cfg.session_timeout);
1503 session = vcl_session_get (wrk, session_index);
1505 if (PREDICT_FALSE (rv))
1507 if (VPPCOM_DEBUG > 0)
1510 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1511 "failed! returning %d (%s)", getpid (),
1512 session->vpp_handle, session_handle, rv,
1513 vppcom_retval_str (rv));
1515 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1516 "returning %d (%s)", getpid (),
1517 session_handle, rv, vppcom_retval_str (rv));
1521 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1522 getpid (), session->vpp_handle, session_handle);
1528 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1531 return (e->event_type == FIFO_EVENT_APP_RX
1532 && e->fifo->client_session_index == sid);
1534 return (e->event_type == SESSION_IO_EVT_CT_TX);
1538 vcl_session_is_readable (vcl_session_t * s)
1540 return ((s->session_state & STATE_OPEN)
1541 || (s->session_state == STATE_LISTEN
1542 && s->session_type == VPPCOM_PROTO_UDP));
1546 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1549 vcl_worker_t *wrk = vcl_worker_get_current ();
1550 int n_read = 0, rv, is_nonblocking;
1551 vcl_session_t *s = 0;
1552 svm_fifo_t *rx_fifo;
1553 svm_msg_q_msg_t msg;
1558 if (PREDICT_FALSE (!buf))
1559 return VPPCOM_EINVAL;
1561 s = vcl_session_get_w_handle (wrk, session_handle);
1562 if (PREDICT_FALSE (!s || s->is_vep))
1563 return VPPCOM_EBADFD;
1565 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1567 session_state_t state = s->session_state;
1568 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1570 VDBG (0, "session handle %u[0x%llx] is not open! state 0x%x (%s),"
1571 " returning %d (%s)", session_handle, s->vpp_handle, state,
1572 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1576 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1577 is_ct = vcl_session_is_ct (s);
1578 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1579 rx_fifo = s->rx_fifo;
1582 if (svm_fifo_is_empty (rx_fifo))
1586 svm_fifo_unset_event (rx_fifo);
1587 return VPPCOM_EWOULDBLOCK;
1589 while (svm_fifo_is_empty (rx_fifo))
1591 svm_fifo_unset_event (rx_fifo);
1592 svm_msg_q_lock (mq);
1593 if (svm_msg_q_is_empty (mq))
1594 svm_msg_q_wait (mq);
1596 svm_msg_q_sub_w_lock (mq, &msg);
1597 e = svm_msg_q_msg_data (mq, &msg);
1598 svm_msg_q_unlock (mq);
1599 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1600 vcl_handle_mq_event (wrk, e);
1601 svm_msg_q_free_msg (mq, &msg);
1603 if (PREDICT_FALSE (s->session_state == STATE_DISCONNECT))
1604 return VPPCOM_ECONNRESET;
1609 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1611 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1613 if (svm_fifo_is_empty (rx_fifo))
1614 svm_fifo_unset_event (rx_fifo);
1616 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1618 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1619 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1623 VDBG (2, "vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1624 s->vpp_handle, session_handle, n_read, rx_fifo);
1630 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1632 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1636 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1638 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1642 vppcom_session_read_segments (uint32_t session_handle,
1643 vppcom_data_segments_t ds)
1645 vcl_worker_t *wrk = vcl_worker_get_current ();
1646 int n_read = 0, rv, is_nonblocking;
1647 vcl_session_t *s = 0;
1648 svm_fifo_t *rx_fifo;
1649 svm_msg_q_msg_t msg;
1654 s = vcl_session_get_w_handle (wrk, session_handle);
1655 if (PREDICT_FALSE (!s || s->is_vep))
1656 return VPPCOM_EBADFD;
1658 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1660 session_state_t state = s->session_state;
1661 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1665 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1666 is_ct = vcl_session_is_ct (s);
1667 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1668 rx_fifo = s->rx_fifo;
1671 if (svm_fifo_is_empty (rx_fifo))
1675 svm_fifo_unset_event (rx_fifo);
1676 return VPPCOM_EWOULDBLOCK;
1678 while (svm_fifo_is_empty (rx_fifo))
1680 svm_fifo_unset_event (rx_fifo);
1681 svm_msg_q_lock (mq);
1682 if (svm_msg_q_is_empty (mq))
1683 svm_msg_q_wait (mq);
1685 svm_msg_q_sub_w_lock (mq, &msg);
1686 e = svm_msg_q_msg_data (mq, &msg);
1687 svm_msg_q_unlock (mq);
1688 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1689 vcl_handle_mq_event (wrk, e);
1690 svm_msg_q_free_msg (mq, &msg);
1692 if (PREDICT_FALSE (s->session_state == STATE_DISCONNECT))
1693 return VPPCOM_ECONNRESET;
1697 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1698 svm_fifo_unset_event (rx_fifo);
1700 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1702 /* If the peer is not polling send notification */
1703 if (!svm_fifo_has_event (s->rx_fifo))
1704 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1705 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1712 vppcom_session_free_segments (uint32_t session_handle,
1713 vppcom_data_segments_t ds)
1715 vcl_worker_t *wrk = vcl_worker_get_current ();
1718 s = vcl_session_get_w_handle (wrk, session_handle);
1719 if (PREDICT_FALSE (!s || s->is_vep))
1722 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1726 vppcom_session_read_ready (vcl_session_t * session)
1728 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1729 if (PREDICT_FALSE (session->is_vep))
1731 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1732 "epoll session!", getpid (), session->session_index);
1733 return VPPCOM_EBADFD;
1736 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1738 session_state_t state = session->session_state;
1741 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1743 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1744 " state 0x%x (%s), returning %d (%s)", getpid (),
1745 session->vpp_handle, session->session_index, state,
1746 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1750 if (session->session_state & STATE_LISTEN)
1751 return clib_fifo_elts (session->accept_evts_fifo);
1753 return svm_fifo_max_dequeue (session->rx_fifo);
1757 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1759 u32 first_copy = clib_min (ds[0].len, max_bytes);
1760 clib_memcpy_fast (buf, ds[0].data, first_copy);
1761 if (first_copy < max_bytes)
1763 clib_memcpy_fast (buf + first_copy, ds[1].data,
1764 clib_min (ds[1].len, max_bytes - first_copy));
1770 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1773 return (e->event_type == FIFO_EVENT_APP_TX
1774 && e->fifo->client_session_index == sid);
1776 return (e->event_type == SESSION_IO_EVT_CT_RX);
1780 vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
1783 vcl_worker_t *wrk = vcl_worker_get_current ();
1784 int rv, n_write, is_nonblocking;
1785 vcl_session_t *s = 0;
1786 svm_fifo_t *tx_fifo = 0;
1787 session_evt_type_t et;
1788 svm_msg_q_msg_t msg;
1793 if (PREDICT_FALSE (!buf))
1794 return VPPCOM_EINVAL;
1796 s = vcl_session_get_w_handle (wrk, session_handle);
1797 if (PREDICT_FALSE (!s))
1798 return VPPCOM_EBADFD;
1800 if (PREDICT_FALSE (s->is_vep))
1802 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1803 "cannot write to an epoll session!",
1804 getpid (), s->vpp_handle, session_handle);
1806 return VPPCOM_EBADFD;
1809 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1811 session_state_t state = s->session_state;
1812 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1813 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1814 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1815 state, vppcom_session_state_str (state));
1819 tx_fifo = s->tx_fifo;
1820 is_ct = vcl_session_is_ct (s);
1821 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1822 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1823 if (svm_fifo_is_full (tx_fifo))
1827 return VPPCOM_EWOULDBLOCK;
1829 while (svm_fifo_is_full (tx_fifo))
1831 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1832 svm_msg_q_lock (mq);
1833 if (svm_msg_q_is_empty (mq))
1834 svm_msg_q_wait (mq);
1836 svm_msg_q_sub_w_lock (mq, &msg);
1837 e = svm_msg_q_msg_data (mq, &msg);
1838 svm_msg_q_unlock (mq);
1840 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1841 vcl_handle_mq_event (wrk, e);
1842 svm_msg_q_free_msg (mq, &msg);
1844 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1845 return VPPCOM_ECONNRESET;
1849 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1850 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1851 if (is_flush && !vcl_session_is_ct (s))
1852 et = SESSION_IO_EVT_TX_FLUSH;
1855 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1856 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1858 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1861 ASSERT (n_write > 0);
1863 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1864 s->vpp_handle, session_handle, n_write);
1870 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1872 return vppcom_session_write_inline (session_handle, buf, n,
1877 vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n)
1879 return vppcom_session_write_inline (session_handle, buf, n,
1884 static vcl_session_t *
1885 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1888 s = vcl_session_get (wrk, f->client_session_index);
1892 if (type == 0 && s->rx_fifo == f)
1895 if (type == 1 && s->tx_fifo == f)
1898 s = vcl_session_get (wrk, f->master_session_index);
1901 if (type == 0 && s->rx_fifo == f)
1903 if (type == 1 && s->tx_fifo == f)
1910 vppcom_session_write_ready (vcl_session_t * session)
1912 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1913 if (PREDICT_FALSE (session->is_vep))
1915 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1916 "cannot write to an epoll session!",
1917 getpid (), session->vpp_handle, session->session_index);
1918 return VPPCOM_EBADFD;
1921 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1923 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1924 "cannot write to a listen session!",
1925 getpid (), session->vpp_handle, session->session_index);
1926 return VPPCOM_EBADFD;
1929 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1931 session_state_t state = session->session_state;
1934 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1935 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1936 "session is not open! state 0x%x (%s), "
1937 "returning %d (%s)", getpid (), session->vpp_handle,
1938 session->session_index,
1939 state, vppcom_session_state_str (state),
1940 rv, vppcom_retval_str (rv));
1944 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1945 getpid (), session->vpp_handle, session->session_index,
1946 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1948 return svm_fifo_max_enqueue (session->tx_fifo);
1952 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1954 svm_msg_q_msg_t *msg;
1958 n_msgs = svm_msg_q_size (mq);
1959 for (i = 0; i < n_msgs; i++)
1961 vec_add2 (wrk->mq_msg_vector, msg, 1);
1962 svm_msg_q_sub_w_lock (mq, msg);
1967 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1968 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1970 svm_fifo_unset_event (_fifo); \
1971 if (svm_fifo_is_empty (_fifo)) \
1976 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1977 unsigned long n_bits, unsigned long *read_map,
1978 unsigned long *write_map,
1979 unsigned long *except_map, u32 * bits_set)
1981 session_disconnected_msg_t *disconnected_msg;
1982 session_connected_msg_t *connected_msg;
1983 vcl_session_t *session;
1986 switch (e->event_type)
1988 case FIFO_EVENT_APP_RX:
1989 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1990 sid = e->fifo->client_session_index;
1991 session = vcl_session_get (wrk, sid);
1994 if (sid < n_bits && read_map)
1996 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2000 case FIFO_EVENT_APP_TX:
2001 sid = e->fifo->client_session_index;
2002 session = vcl_session_get (wrk, sid);
2005 if (sid < n_bits && write_map)
2007 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2011 case SESSION_IO_EVT_CT_TX:
2012 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2013 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2016 sid = session->session_index;
2017 if (sid < n_bits && read_map)
2019 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2023 case SESSION_IO_EVT_CT_RX:
2024 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2027 sid = session->session_index;
2028 if (sid < n_bits && write_map)
2030 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2034 case SESSION_CTRL_EVT_ACCEPTED:
2035 session = vcl_session_accepted (wrk,
2036 (session_accepted_msg_t *) e->data);
2039 sid = session->session_index;
2040 if (sid < n_bits && read_map)
2042 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2046 case SESSION_CTRL_EVT_CONNECTED:
2047 connected_msg = (session_connected_msg_t *) e->data;
2048 vcl_session_connected_handler (wrk, connected_msg);
2050 case SESSION_CTRL_EVT_DISCONNECTED:
2051 disconnected_msg = (session_disconnected_msg_t *) e->data;
2052 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2055 sid = session->session_index;
2056 if (sid < n_bits && except_map)
2058 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2062 case SESSION_CTRL_EVT_RESET:
2063 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2064 if (sid < n_bits && except_map)
2066 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2071 clib_warning ("unhandled: %u", e->event_type);
2077 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2078 unsigned long n_bits, unsigned long *read_map,
2079 unsigned long *write_map, unsigned long *except_map,
2080 double time_to_wait, u32 * bits_set)
2082 svm_msg_q_msg_t *msg;
2086 svm_msg_q_lock (mq);
2087 if (svm_msg_q_is_empty (mq))
2091 svm_msg_q_unlock (mq);
2097 svm_msg_q_unlock (mq);
2100 else if (time_to_wait < 0)
2102 svm_msg_q_wait (mq);
2106 if (svm_msg_q_timedwait (mq, time_to_wait))
2108 svm_msg_q_unlock (mq);
2113 vcl_mq_dequeue_batch (wrk, mq);
2114 svm_msg_q_unlock (mq);
2116 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2118 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2119 e = svm_msg_q_msg_data (mq, msg);
2120 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
2121 except_map, bits_set);
2122 svm_msg_q_free_msg (mq, msg);
2124 vec_reset_length (wrk->mq_msg_vector);
2129 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
2130 unsigned long *read_map, unsigned long *write_map,
2131 unsigned long *except_map, double time_to_wait,
2134 double total_wait = 0, wait_slice;
2135 vcl_cut_through_registration_t *cr;
2137 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
2138 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
2141 vcl_ct_registration_lock (wrk);
2143 pool_foreach (cr, wrk->cut_through_registrations, ({
2144 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
2148 vcl_ct_registration_unlock (wrk);
2150 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2151 write_map, except_map, time_to_wait, bits_set);
2152 total_wait += wait_slice;
2156 while (total_wait < time_to_wait);
2162 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
2163 unsigned long *read_map, unsigned long *write_map,
2164 unsigned long *except_map, double time_to_wait,
2167 vcl_mq_evt_conn_t *mqc;
2168 int __clib_unused n_read;
2172 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2173 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2174 vec_len (wrk->mq_events), time_to_wait);
2175 for (i = 0; i < n_mq_evts; i++)
2177 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2178 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2179 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2180 except_map, 0, bits_set);
2183 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2187 vppcom_select (unsigned long n_bits, unsigned long *read_map,
2188 unsigned long *write_map, unsigned long *except_map,
2189 double time_to_wait)
2191 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2192 vcl_worker_t *wrk = vcl_worker_get_current ();
2193 vcl_session_t *session = 0;
2196 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (unsigned long),
2197 "vppcom bitmap size mismatch");
2198 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (fd_mask),
2199 "vppcom bitmap size mismatch");
2200 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (uword),
2201 "vppcom bitmap size mismatch");
2203 if (n_bits && read_map)
2205 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2206 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2207 vec_len (wrk->rd_bitmap) * sizeof (unsigned long));
2208 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (unsigned long));
2210 if (n_bits && write_map)
2212 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2213 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2214 vec_len (wrk->wr_bitmap) * sizeof (unsigned long));
2215 memset (write_map, 0,
2216 vec_len (wrk->wr_bitmap) * sizeof (unsigned long));
2218 if (n_bits && except_map)
2220 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2221 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2222 vec_len (wrk->ex_bitmap) * sizeof (unsigned long));
2223 memset (except_map, 0,
2224 vec_len (wrk->ex_bitmap) * sizeof (unsigned long));
2234 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2235 if (!(session = vcl_session_get (wrk, sid)))
2237 if (except_map && sid < minbits)
2238 clib_bitmap_set_no_check (except_map, sid, 1);
2242 rv = svm_fifo_is_full (session->tx_fifo);
2245 clib_bitmap_set_no_check ((uword*)write_map, sid, 1);
2254 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2255 if (!(session = vcl_session_get (wrk, sid)))
2257 if (except_map && sid < minbits)
2258 clib_bitmap_set_no_check (except_map, sid, 1);
2262 rv = vppcom_session_read_ready (session);
2265 clib_bitmap_set_no_check ((uword*)read_map, sid, 1);
2273 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2275 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2276 read_map, write_map, except_map, &bits_set);
2278 vec_reset_length (wrk->unhandled_evts_vector);
2280 if (vcm->cfg.use_mq_eventfd)
2281 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2282 time_to_wait, &bits_set);
2284 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2285 time_to_wait, &bits_set);
2291 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2293 vcl_session_t *session;
2294 vppcom_epoll_t *vep;
2297 if (VPPCOM_DEBUG <= 1)
2300 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2301 session = vcl_session_get (wrk, vep_idx);
2302 if (PREDICT_FALSE (!session))
2304 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2305 getpid (), vep_idx);
2308 if (PREDICT_FALSE (!session->is_vep))
2310 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2311 getpid (), vep_idx);
2314 vep = &session->vep;
2315 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2318 " is_vep_session = %u\n"
2319 " next_sid = 0x%x (%u)\n"
2320 " wait_cont_idx = 0x%x (%u)\n"
2321 "}\n", getpid (), vep_idx,
2322 session->is_vep, session->is_vep_session,
2323 vep->next_sh, vep->next_sh,
2324 session->wait_cont_idx, session->wait_cont_idx);
2326 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2328 session = vcl_session_get (wrk, sid);
2329 if (PREDICT_FALSE (!session))
2331 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2334 if (PREDICT_FALSE (session->is_vep))
2335 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2336 getpid (), vep_idx);
2337 else if (PREDICT_FALSE (!session->is_vep_session))
2339 clib_warning ("VCL<%d>: ERROR: session (%u) "
2340 "is not a vep session!", getpid (), sid);
2343 vep = &session->vep;
2344 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2345 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2346 "vep_idx (%u)!", getpid (),
2347 sid, session->vep.vep_sh, vep_idx);
2348 if (session->is_vep_session)
2350 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2352 " next_sid = 0x%x (%u)\n"
2353 " prev_sid = 0x%x (%u)\n"
2354 " vep_idx = 0x%x (%u)\n"
2355 " ev.events = 0x%x\n"
2356 " ev.data.u64 = 0x%llx\n"
2360 vep->next_sh, vep->next_sh,
2361 vep->prev_sh, vep->prev_sh,
2362 vep->vep_sh, vep->vep_sh,
2363 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2368 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2369 getpid (), vep_idx);
2373 vppcom_epoll_create (void)
2375 vcl_worker_t *wrk = vcl_worker_get_current ();
2376 vcl_session_t *vep_session;
2378 vep_session = vcl_session_alloc (wrk);
2380 vep_session->is_vep = 1;
2381 vep_session->vep.vep_sh = ~0;
2382 vep_session->vep.next_sh = ~0;
2383 vep_session->vep.prev_sh = ~0;
2384 vep_session->wait_cont_idx = ~0;
2385 vep_session->vpp_handle = ~0;
2387 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_session->session_index);
2388 VDBG (0, "Created vep_idx %u", vep_session->session_index);
2390 return vcl_session_handle (vep_session);
2394 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2395 struct epoll_event *event)
2397 vcl_worker_t *wrk = vcl_worker_get_current ();
2398 vcl_session_t *vep_session;
2399 vcl_session_t *session;
2402 if (vep_handle == session_handle)
2404 VDBG (0, "vep_sh == session handle (%u)!", vep_handle);
2405 return VPPCOM_EINVAL;
2408 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2409 if (PREDICT_FALSE (!vep_session))
2411 VDBG (0, "Invalid vep_sh (%u)!", vep_handle);
2412 return VPPCOM_EBADFD;
2414 if (PREDICT_FALSE (!vep_session->is_vep))
2416 VDBG (0, "vep_sh (%u) is not a vep!", vep_handle);
2417 return VPPCOM_EINVAL;
2420 ASSERT (vep_session->vep.vep_sh == ~0);
2421 ASSERT (vep_session->vep.prev_sh == ~0);
2423 session = vcl_session_get_w_handle (wrk, session_handle);
2424 if (PREDICT_FALSE (!session))
2426 VDBG (0, "Invalid session_handle (%u)!", session_handle);
2427 return VPPCOM_EBADFD;
2429 if (PREDICT_FALSE (session->is_vep))
2431 VDBG (0, "session_handle (%u) is a vep!", vep_handle);
2432 return VPPCOM_EINVAL;
2438 if (PREDICT_FALSE (!event))
2440 VDBG (0, "EPOLL_CTL_ADD: NULL pointer to epoll_event structure!");
2441 return VPPCOM_EINVAL;
2443 if (vep_session->vep.next_sh != ~0)
2445 vcl_session_t *next_session;
2446 next_session = vcl_session_get_w_handle (wrk,
2447 vep_session->vep.next_sh);
2448 if (PREDICT_FALSE (!next_session))
2450 VDBG (0, "EPOLL_CTL_ADD: Invalid vep.next_sid (%u) on "
2451 "vep_idx (%u)!", vep_session->vep.next_sh, vep_handle);
2452 return VPPCOM_EBADFD;
2454 ASSERT (next_session->vep.prev_sh == vep_handle);
2455 next_session->vep.prev_sh = session_handle;
2457 session->vep.next_sh = vep_session->vep.next_sh;
2458 session->vep.prev_sh = vep_handle;
2459 session->vep.vep_sh = vep_handle;
2460 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2461 session->vep.ev = *event;
2462 session->is_vep = 0;
2463 session->is_vep_session = 1;
2464 vep_session->vep.next_sh = session_handle;
2466 VDBG (1, "EPOLL_CTL_ADD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
2467 vep_handle, session_handle, event->events, event->data.u64);
2468 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2472 if (PREDICT_FALSE (!event))
2474 VDBG (0, "EPOLL_CTL_MOD: NULL pointer to epoll_event structure!");
2478 else if (PREDICT_FALSE (!session->is_vep_session))
2480 VDBG (0, "sid %u EPOLL_CTL_MOD: not a vep session!",
2485 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2487 VDBG (0, "EPOLL_CTL_MOD: sh %u vep_sh (%u) != vep_sh (%u)!",
2488 session_handle, session->vep.vep_sh, vep_handle);
2492 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2493 session->vep.ev = *event;
2494 VDBG (1, "EPOLL_CTL_MOD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
2495 vep_handle, session_handle, event->events, event->data.u64);
2499 if (PREDICT_FALSE (!session->is_vep_session))
2501 VDBG (0, "EPOLL_CTL_DEL: %u not a vep session!", session_handle);
2505 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2507 VDBG (0, "EPOLL_CTL_DEL: sh %u vep_sh (%u) != vep_sh (%u)!",
2508 session_handle, session->vep.vep_sh, vep_handle);
2513 vep_session->wait_cont_idx =
2514 (vep_session->wait_cont_idx == session_handle) ?
2515 session->vep.next_sh : vep_session->wait_cont_idx;
2517 if (session->vep.prev_sh == vep_handle)
2518 vep_session->vep.next_sh = session->vep.next_sh;
2521 vcl_session_t *prev_session;
2522 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2523 if (PREDICT_FALSE (!prev_session))
2525 VDBG (0, "EPOLL_CTL_DEL: Invalid prev_sid (%u) on sid (%u)!",
2526 session->vep.prev_sh, session_handle);
2527 return VPPCOM_EBADFD;
2529 ASSERT (prev_session->vep.next_sh == session_handle);
2530 prev_session->vep.next_sh = session->vep.next_sh;
2532 if (session->vep.next_sh != ~0)
2534 vcl_session_t *next_session;
2535 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2536 if (PREDICT_FALSE (!next_session))
2538 VDBG (0, "EPOLL_CTL_DEL: Invalid next_sid (%u) on sid (%u)!",
2539 session->vep.next_sh, session_handle);
2540 return VPPCOM_EBADFD;
2542 ASSERT (next_session->vep.prev_sh == session_handle);
2543 next_session->vep.prev_sh = session->vep.prev_sh;
2546 memset (&session->vep, 0, sizeof (session->vep));
2547 session->vep.next_sh = ~0;
2548 session->vep.prev_sh = ~0;
2549 session->vep.vep_sh = ~0;
2550 session->is_vep_session = 0;
2551 VDBG (1, "EPOLL_CTL_DEL: vep_idx %u, sid %u!", vep_handle,
2553 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2557 VDBG (0, "Invalid operation (%d)!", op);
2561 vep_verify_epoll_chain (wrk, vep_handle);
2568 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2569 struct epoll_event *events, u32 * num_ev)
2571 session_disconnected_msg_t *disconnected_msg;
2572 session_connected_msg_t *connected_msg;
2573 u32 sid = ~0, session_events;
2574 u64 session_evt_data = ~0;
2575 vcl_session_t *session;
2578 switch (e->event_type)
2580 case FIFO_EVENT_APP_RX:
2581 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2582 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2583 sid = e->fifo->client_session_index;
2584 if (!(session = vcl_session_get (wrk, sid)))
2586 session_events = session->vep.ev.events;
2587 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2590 events[*num_ev].events |= EPOLLIN;
2591 session_evt_data = session->vep.ev.data.u64;
2592 session->has_rx_evt = 1;
2594 case FIFO_EVENT_APP_TX:
2595 sid = e->fifo->client_session_index;
2596 if (!(session = vcl_session_get (wrk, sid)))
2598 session_events = session->vep.ev.events;
2599 if (!(EPOLLOUT & session_events))
2602 events[*num_ev].events |= EPOLLOUT;
2603 session_evt_data = session->vep.ev.data.u64;
2605 case SESSION_IO_EVT_CT_TX:
2606 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2607 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2608 if (PREDICT_FALSE (!session))
2610 sid = session->session_index;
2611 session_events = session->vep.ev.events;
2612 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2615 events[*num_ev].events |= EPOLLIN;
2616 session_evt_data = session->vep.ev.data.u64;
2617 session->has_rx_evt = 1;
2619 case SESSION_IO_EVT_CT_RX:
2620 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2621 if (PREDICT_FALSE (!session))
2623 sid = session->session_index;
2624 session_events = session->vep.ev.events;
2625 if (!(EPOLLOUT & session_events))
2628 events[*num_ev].events |= EPOLLOUT;
2629 session_evt_data = session->vep.ev.data.u64;
2631 case SESSION_CTRL_EVT_ACCEPTED:
2632 session = vcl_session_accepted (wrk,
2633 (session_accepted_msg_t *) e->data);
2637 session_events = session->vep.ev.events;
2638 if (!(EPOLLIN & session_events))
2642 events[*num_ev].events |= EPOLLIN;
2643 session_evt_data = session->vep.ev.data.u64;
2645 case SESSION_CTRL_EVT_CONNECTED:
2646 connected_msg = (session_connected_msg_t *) e->data;
2647 vcl_session_connected_handler (wrk, connected_msg);
2648 /* Generate EPOLLOUT because there's no connected event */
2649 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2650 if (!(session = vcl_session_get (wrk, sid)))
2652 session_events = session->vep.ev.events;
2653 if (EPOLLOUT & session_events)
2656 events[*num_ev].events |= EPOLLOUT;
2657 session_evt_data = session->vep.ev.data.u64;
2660 case SESSION_CTRL_EVT_DISCONNECTED:
2661 disconnected_msg = (session_disconnected_msg_t *) e->data;
2662 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2666 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2667 session_evt_data = session->vep.ev.data.u64;
2668 session_events = session->vep.ev.events;
2670 case SESSION_CTRL_EVT_RESET:
2671 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2672 if (!(session = vcl_session_get (wrk, sid)))
2675 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2676 session_evt_data = session->vep.ev.data.u64;
2677 session_events = session->vep.ev.events;
2680 VDBG (0, "unhandled: %u", e->event_type);
2686 events[*num_ev].data.u64 = session_evt_data;
2687 if (EPOLLONESHOT & session_events)
2689 session = vcl_session_get (wrk, sid);
2690 session->vep.ev.events = 0;
2697 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2698 struct epoll_event *events, u32 maxevents,
2699 double wait_for_time, u32 * num_ev)
2701 svm_msg_q_msg_t *msg;
2705 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2706 goto handle_dequeued;
2708 svm_msg_q_lock (mq);
2709 if (svm_msg_q_is_empty (mq))
2713 svm_msg_q_unlock (mq);
2716 else if (wait_for_time < 0)
2718 svm_msg_q_wait (mq);
2722 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2724 svm_msg_q_unlock (mq);
2729 vcl_mq_dequeue_batch (wrk, mq);
2730 svm_msg_q_unlock (mq);
2733 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2735 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2736 e = svm_msg_q_msg_data (mq, msg);
2737 if (*num_ev < maxevents)
2738 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2740 vec_add1 (wrk->unhandled_evts_vector, *e);
2741 svm_msg_q_free_msg (mq, msg);
2743 vec_reset_length (wrk->mq_msg_vector);
2749 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2750 int maxevents, u32 n_evts, double wait_for_time)
2752 vcl_cut_through_registration_t *cr;
2753 double total_wait = 0, wait_slice;
2756 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2757 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2761 vcl_ct_registration_lock (wrk);
2763 pool_foreach (cr, wrk->cut_through_registrations, ({
2764 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2767 vcl_ct_registration_unlock (wrk);
2769 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2770 maxevents, n_evts ? 0 : wait_slice,
2773 total_wait += wait_slice;
2777 while (total_wait < wait_for_time);
2782 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2783 int maxevents, u32 n_evts, double wait_for_time)
2785 vcl_mq_evt_conn_t *mqc;
2786 int __clib_unused n_read;
2790 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2792 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2793 vec_len (wrk->mq_events), wait_for_time);
2794 for (i = 0; i < n_mq_evts; i++)
2796 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2797 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2798 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2800 if (!n_evts && n_mq_evts > 0)
2803 return (int) n_evts;
2807 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2808 int maxevents, double wait_for_time)
2810 vcl_worker_t *wrk = vcl_worker_get_current ();
2811 vcl_session_t *vep_session;
2815 if (PREDICT_FALSE (maxevents <= 0))
2817 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2818 getpid (), maxevents);
2819 return VPPCOM_EINVAL;
2822 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2824 return VPPCOM_EBADFD;
2826 if (PREDICT_FALSE (!vep_session->is_vep))
2828 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2829 getpid (), vep_handle);
2830 return VPPCOM_EINVAL;
2833 memset (events, 0, sizeof (*events) * maxevents);
2835 if (vec_len (wrk->unhandled_evts_vector))
2837 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2839 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2841 if (n_evts == maxevents)
2848 vec_delete (wrk->unhandled_evts_vector, i, 0);
2851 if (vcm->cfg.use_mq_eventfd)
2852 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2855 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2860 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2861 void *buffer, uint32_t * buflen)
2863 vcl_worker_t *wrk = vcl_worker_get_current ();
2864 vcl_session_t *session;
2866 u32 *flags = buffer;
2867 vppcom_endpt_t *ep = buffer;
2869 session = vcl_session_get_w_handle (wrk, session_handle);
2871 return VPPCOM_EBADFD;
2875 case VPPCOM_ATTR_GET_NREAD:
2876 rv = vppcom_session_read_ready (session);
2877 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2881 case VPPCOM_ATTR_GET_NWRITE:
2882 rv = vppcom_session_write_ready (session);
2883 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2884 getpid (), session_handle, rv);
2887 case VPPCOM_ATTR_GET_FLAGS:
2888 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2890 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2891 VCL_SESS_ATTR_NONBLOCK));
2892 *buflen = sizeof (*flags);
2893 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2894 "is_nonblocking = %u", getpid (),
2895 session_handle, *flags,
2896 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2902 case VPPCOM_ATTR_SET_FLAGS:
2903 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2905 if (*flags & O_NONBLOCK)
2906 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2908 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2910 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2911 " is_nonblocking = %u",
2912 getpid (), session_handle, *flags,
2913 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2919 case VPPCOM_ATTR_GET_PEER_ADDR:
2920 if (PREDICT_TRUE (buffer && buflen &&
2921 (*buflen >= sizeof (*ep)) && ep->ip))
2923 ep->is_ip4 = session->transport.is_ip4;
2924 ep->port = session->transport.rmt_port;
2925 if (session->transport.is_ip4)
2926 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2927 sizeof (ip4_address_t));
2929 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2930 sizeof (ip6_address_t));
2931 *buflen = sizeof (*ep);
2932 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2933 "addr = %U, port %u", getpid (),
2934 session_handle, ep->is_ip4, format_ip46_address,
2935 &session->transport.rmt_ip,
2936 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2937 clib_net_to_host_u16 (ep->port));
2943 case VPPCOM_ATTR_GET_LCL_ADDR:
2944 if (PREDICT_TRUE (buffer && buflen &&
2945 (*buflen >= sizeof (*ep)) && ep->ip))
2947 ep->is_ip4 = session->transport.is_ip4;
2948 ep->port = session->transport.lcl_port;
2949 if (session->transport.is_ip4)
2950 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
2951 sizeof (ip4_address_t));
2953 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
2954 sizeof (ip6_address_t));
2955 *buflen = sizeof (*ep);
2956 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2957 " addr = %U port %d", getpid (),
2958 session_handle, ep->is_ip4, format_ip46_address,
2959 &session->transport.lcl_ip,
2960 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2961 clib_net_to_host_u16 (ep->port));
2967 case VPPCOM_ATTR_GET_LIBC_EPFD:
2968 rv = session->libc_epfd;
2969 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2973 case VPPCOM_ATTR_SET_LIBC_EPFD:
2974 if (PREDICT_TRUE (buffer && buflen &&
2975 (*buflen == sizeof (session->libc_epfd))))
2977 session->libc_epfd = *(int *) buffer;
2978 *buflen = sizeof (session->libc_epfd);
2980 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2981 "buflen %d", getpid (), session->libc_epfd, *buflen);
2987 case VPPCOM_ATTR_GET_PROTOCOL:
2988 if (buffer && buflen && (*buflen >= sizeof (int)))
2990 *(int *) buffer = session->session_type;
2991 *buflen = sizeof (int);
2993 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2994 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
3001 case VPPCOM_ATTR_GET_LISTEN:
3002 if (buffer && buflen && (*buflen >= sizeof (int)))
3004 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3005 VCL_SESS_ATTR_LISTEN);
3006 *buflen = sizeof (int);
3008 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
3009 getpid (), *(int *) buffer, *buflen);
3015 case VPPCOM_ATTR_GET_ERROR:
3016 if (buffer && buflen && (*buflen >= sizeof (int)))
3018 *(int *) buffer = 0;
3019 *buflen = sizeof (int);
3021 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
3022 getpid (), *(int *) buffer, *buflen);
3028 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
3029 if (buffer && buflen && (*buflen >= sizeof (u32)))
3033 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
3034 session->tx_fifo ? session->tx_fifo->nitems :
3035 vcm->cfg.tx_fifo_size);
3036 *buflen = sizeof (u32);
3038 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
3039 "buflen %d, #VPP-TBD#", getpid (),
3040 *(size_t *) buffer, *(size_t *) buffer, *buflen);
3046 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
3047 if (buffer && buflen && (*buflen == sizeof (u32)))
3050 session->sndbuf_size = *(u32 *) buffer;
3051 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
3052 "buflen %d, #VPP-TBD#", getpid (),
3053 session->sndbuf_size, session->sndbuf_size, *buflen);
3059 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
3060 if (buffer && buflen && (*buflen >= sizeof (u32)))
3064 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
3065 session->rx_fifo ? session->rx_fifo->nitems :
3066 vcm->cfg.rx_fifo_size);
3067 *buflen = sizeof (u32);
3069 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
3070 "buflen %d, #VPP-TBD#", getpid (),
3071 *(size_t *) buffer, *(size_t *) buffer, *buflen);
3077 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
3078 if (buffer && buflen && (*buflen == sizeof (u32)))
3081 session->rcvbuf_size = *(u32 *) buffer;
3082 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
3083 "buflen %d, #VPP-TBD#", getpid (),
3084 session->sndbuf_size, session->sndbuf_size, *buflen);
3090 case VPPCOM_ATTR_GET_REUSEADDR:
3091 if (buffer && buflen && (*buflen >= sizeof (int)))
3094 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3095 VCL_SESS_ATTR_REUSEADDR);
3096 *buflen = sizeof (int);
3098 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
3099 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3105 case VPPCOM_ATTR_SET_REUSEADDR:
3106 if (buffer && buflen && (*buflen == sizeof (int)) &&
3107 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3110 if (*(int *) buffer)
3111 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
3113 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
3115 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
3116 " #VPP-TBD#", getpid (),
3117 VCL_SESS_ATTR_TEST (session->attr,
3118 VCL_SESS_ATTR_REUSEADDR), *buflen);
3124 case VPPCOM_ATTR_GET_REUSEPORT:
3125 if (buffer && buflen && (*buflen >= sizeof (int)))
3128 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3129 VCL_SESS_ATTR_REUSEPORT);
3130 *buflen = sizeof (int);
3132 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
3133 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3139 case VPPCOM_ATTR_SET_REUSEPORT:
3140 if (buffer && buflen && (*buflen == sizeof (int)) &&
3141 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3144 if (*(int *) buffer)
3145 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
3147 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
3149 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
3150 " #VPP-TBD#", getpid (),
3151 VCL_SESS_ATTR_TEST (session->attr,
3152 VCL_SESS_ATTR_REUSEPORT), *buflen);
3158 case VPPCOM_ATTR_GET_BROADCAST:
3159 if (buffer && buflen && (*buflen >= sizeof (int)))
3162 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3163 VCL_SESS_ATTR_BROADCAST);
3164 *buflen = sizeof (int);
3166 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
3167 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3173 case VPPCOM_ATTR_SET_BROADCAST:
3174 if (buffer && buflen && (*buflen == sizeof (int)))
3177 if (*(int *) buffer)
3178 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
3180 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
3182 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
3183 "#VPP-TBD#", getpid (),
3184 VCL_SESS_ATTR_TEST (session->attr,
3185 VCL_SESS_ATTR_BROADCAST), *buflen);
3191 case VPPCOM_ATTR_GET_V6ONLY:
3192 if (buffer && buflen && (*buflen >= sizeof (int)))
3195 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3196 VCL_SESS_ATTR_V6ONLY);
3197 *buflen = sizeof (int);
3199 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
3200 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3206 case VPPCOM_ATTR_SET_V6ONLY:
3207 if (buffer && buflen && (*buflen == sizeof (int)))
3210 if (*(int *) buffer)
3211 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3213 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3215 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
3216 "#VPP-TBD#", getpid (),
3217 VCL_SESS_ATTR_TEST (session->attr,
3218 VCL_SESS_ATTR_V6ONLY), *buflen);
3224 case VPPCOM_ATTR_GET_KEEPALIVE:
3225 if (buffer && buflen && (*buflen >= sizeof (int)))
3228 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3229 VCL_SESS_ATTR_KEEPALIVE);
3230 *buflen = sizeof (int);
3232 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3233 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3239 case VPPCOM_ATTR_SET_KEEPALIVE:
3240 if (buffer && buflen && (*buflen == sizeof (int)))
3243 if (*(int *) buffer)
3244 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3246 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3248 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3249 "#VPP-TBD#", getpid (),
3250 VCL_SESS_ATTR_TEST (session->attr,
3251 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3257 case VPPCOM_ATTR_GET_TCP_NODELAY:
3258 if (buffer && buflen && (*buflen >= sizeof (int)))
3261 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3262 VCL_SESS_ATTR_TCP_NODELAY);
3263 *buflen = sizeof (int);
3265 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3266 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3272 case VPPCOM_ATTR_SET_TCP_NODELAY:
3273 if (buffer && buflen && (*buflen == sizeof (int)))
3276 if (*(int *) buffer)
3277 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3279 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3281 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3282 "#VPP-TBD#", getpid (),
3283 VCL_SESS_ATTR_TEST (session->attr,
3284 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3290 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3291 if (buffer && buflen && (*buflen >= sizeof (int)))
3294 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3295 VCL_SESS_ATTR_TCP_KEEPIDLE);
3296 *buflen = sizeof (int);
3298 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3299 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3305 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3306 if (buffer && buflen && (*buflen == sizeof (int)))
3309 if (*(int *) buffer)
3310 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3312 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3314 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3315 "#VPP-TBD#", getpid (),
3316 VCL_SESS_ATTR_TEST (session->attr,
3317 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3323 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3324 if (buffer && buflen && (*buflen >= sizeof (int)))
3327 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3328 VCL_SESS_ATTR_TCP_KEEPINTVL);
3329 *buflen = sizeof (int);
3331 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3332 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3338 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3339 if (buffer && buflen && (*buflen == sizeof (int)))
3342 if (*(int *) buffer)
3343 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3345 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3347 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3348 "#VPP-TBD#", getpid (),
3349 VCL_SESS_ATTR_TEST (session->attr,
3350 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3356 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3357 if (buffer && buflen && (*buflen >= sizeof (u32)))
3360 *(u32 *) buffer = session->user_mss;
3361 *buflen = sizeof (int);
3363 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3364 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3370 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3371 if (buffer && buflen && (*buflen == sizeof (u32)))
3374 session->user_mss = *(u32 *) buffer;
3376 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3377 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3383 case VPPCOM_ATTR_GET_REFCNT:
3384 rv = vcl_session_get_refcnt (session);
3396 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3397 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3399 vcl_worker_t *wrk = vcl_worker_get_current ();
3401 vcl_session_t *session = 0;
3405 session = vcl_session_get_w_handle (wrk, session_handle);
3406 if (PREDICT_FALSE (!session))
3408 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3409 getpid (), session_handle);
3410 return VPPCOM_EBADFD;
3412 ep->is_ip4 = session->transport.is_ip4;
3413 ep->port = session->transport.rmt_port;
3417 rv = vppcom_session_read (session_handle, buffer, buflen);
3418 else if (flags & MSG_PEEK)
3419 rv = vppcom_session_peek (session_handle, buffer, buflen);
3422 VDBG (0, "Unsupport flags for recvfrom %d", flags);
3423 return VPPCOM_EAFNOSUPPORT;
3428 if (session->transport.is_ip4)
3429 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3430 sizeof (ip4_address_t));
3432 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3433 sizeof (ip6_address_t));
3440 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3441 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3444 return VPPCOM_EINVAL;
3449 return VPPCOM_EINVAL;
3454 // TBD check the flags and do the right thing
3455 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3456 getpid (), flags, flags);
3459 return (vppcom_session_write_inline (session_handle, buffer, buflen, 1));
3463 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3465 vcl_worker_t *wrk = vcl_worker_get_current ();
3466 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3467 u32 i, keep_trying = 1;
3468 svm_msg_q_msg_t msg;
3472 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3473 getpid (), vp, n_sids, wait_for_time);
3476 return VPPCOM_EFAULT;
3480 vcl_session_t *session;
3482 /* Dequeue all events and drop all unhandled io events */
3483 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3485 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3486 vcl_handle_mq_event (wrk, e);
3487 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3489 vec_reset_length (wrk->unhandled_evts_vector);
3491 for (i = 0; i < n_sids; i++)
3493 session = vcl_session_get (wrk, vp[i].sid);
3496 vp[i].revents = POLLHUP;
3503 if (POLLIN & vp[i].events)
3505 rv = vppcom_session_read_ready (session);
3508 vp[i].revents |= POLLIN;
3515 case VPPCOM_ECONNRESET:
3516 vp[i].revents = POLLHUP;
3520 vp[i].revents = POLLERR;
3527 if (POLLOUT & vp[i].events)
3529 rv = vppcom_session_write_ready (session);
3532 vp[i].revents |= POLLOUT;
3539 case VPPCOM_ECONNRESET:
3540 vp[i].revents = POLLHUP;
3544 vp[i].revents = POLLERR;
3551 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3553 vp[i].revents = POLLNVAL;
3557 if (wait_for_time != -1)
3558 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3560 while ((num_ev == 0) && keep_trying);
3562 if (VPPCOM_DEBUG > 3)
3564 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3565 for (i = 0; i < n_sids; i++)
3567 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3568 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3569 vp[i].events, vp[i].revents);
3576 vppcom_mq_epoll_fd (void)
3578 vcl_worker_t *wrk = vcl_worker_get_current ();
3579 return wrk->mqs_epfd;
3583 vppcom_session_index (uint32_t session_handle)
3585 return session_handle & 0xFFFFFF;
3589 vppcom_session_handle (uint32_t session_index)
3591 return (vcl_get_worker_index () << 24) | session_index;
3595 vppcom_worker_register (void)
3597 if (!vcl_worker_alloc_and_init ())
3598 return VPPCOM_EEXIST;
3600 if (vcl_worker_set_bapi ())
3601 return VPPCOM_EEXIST;
3603 if (vcl_worker_register_with_vpp ())
3604 return VPPCOM_EEXIST;
3610 vppcom_worker_index (void)
3612 return vcl_get_worker_index ();
3616 * fd.io coding-style-patch-verification: ON
3619 * eval: (c-set-style "gnu")