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 session->session_type ? "UDP" : "TCP");
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 validate_args_session_accept_ (vcl_worker_t * wrk,
1251 vcl_session_t * listen_session)
1253 /* Input validation - expects spinlock on sessions_lockp */
1254 if (listen_session->is_vep)
1256 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1257 "epoll session!", getpid (),
1258 listen_session->session_index);
1259 return VPPCOM_EBADFD;
1262 if (listen_session->session_state != STATE_LISTEN)
1264 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1265 "not in listen state! state 0x%x (%s)", getpid (),
1266 listen_session->vpp_handle, listen_session->session_index,
1267 listen_session->session_state,
1268 vppcom_session_state_str (listen_session->session_state));
1269 return VPPCOM_EBADFD;
1275 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1278 u32 client_session_index = ~0, listen_session_index, accept_flags = 0;
1279 vcl_worker_t *wrk = vcl_worker_get_current ();
1280 session_accepted_msg_t accepted_msg;
1281 vcl_session_t *listen_session = 0;
1282 vcl_session_t *client_session = 0;
1283 svm_msg_q_t *vpp_evt_q;
1284 vcl_session_msg_t *evt;
1285 u64 listen_vpp_handle;
1286 svm_msg_q_msg_t msg;
1291 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1292 if (!listen_session)
1293 return VPPCOM_EBADFD;
1295 listen_session_index = listen_session->session_index;
1296 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1299 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1301 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1302 accept_flags = evt->flags;
1303 accepted_msg = evt->accepted_msg;
1307 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1308 VCL_SESS_ATTR_NONBLOCK);
1309 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1310 return VPPCOM_EAGAIN;
1314 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1315 return VPPCOM_EAGAIN;
1317 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1318 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1320 clib_warning ("discarded event: %u", e->event_type);
1321 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1324 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1325 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1331 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1332 listen_session = vcl_session_get (wrk, listen_session_index);
1333 client_session = vcl_session_get (wrk, client_session_index);
1335 if (flags & O_NONBLOCK)
1336 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1338 listen_vpp_handle = listen_session->vpp_handle;
1339 VDBG (1, "vpp handle 0x%llx, sid %u: Got a client request! "
1340 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1341 listen_vpp_handle, listen_session_handle,
1342 client_session->vpp_handle, client_session_index,
1343 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1344 VCL_SESS_ATTR_NONBLOCK));
1348 ep->is_ip4 = client_session->transport.is_ip4;
1349 ep->port = client_session->transport.rmt_port;
1350 if (client_session->transport.is_ip4)
1351 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1352 sizeof (ip4_address_t));
1354 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1355 sizeof (ip6_address_t));
1358 if (accepted_msg.server_event_queue_address)
1359 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1362 vpp_evt_q = client_session->vpp_evt_q;
1364 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1365 client_session->vpp_handle, 0);
1367 VDBG (0, "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u "
1368 "local: %U:%u", listen_session_handle, listen_vpp_handle,
1369 client_session_index, client_session->vpp_handle,
1370 format_ip46_address, &client_session->transport.rmt_ip,
1371 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1372 clib_net_to_host_u16 (client_session->transport.rmt_port),
1373 format_ip46_address, &client_session->transport.lcl_ip,
1374 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1375 clib_net_to_host_u16 (client_session->transport.lcl_port));
1376 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1377 client_session_index);
1380 * Session might have been closed already
1384 if (accept_flags & VCL_ACCEPTED_F_CLOSED)
1385 client_session->session_state = STATE_VPP_CLOSING;
1386 else if (accept_flags & VCL_ACCEPTED_F_RESET)
1387 client_session->session_state = STATE_DISCONNECT;
1389 return vcl_session_handle (client_session);
1393 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1395 vcl_worker_t *wrk = vcl_worker_get_current ();
1396 vcl_session_t *session = 0;
1400 session = vcl_session_get_w_handle (wrk, session_handle);
1402 return VPPCOM_EBADFD;
1403 session_index = session->session_index;
1405 if (PREDICT_FALSE (session->is_vep))
1407 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1408 "connect on an epoll session!", getpid (),
1410 return VPPCOM_EBADFD;
1413 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1415 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
1416 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1417 getpid (), session->vpp_handle, session_handle,
1418 session->transport.is_ip4 ? "IPv4" : "IPv6",
1419 format_ip46_address,
1420 &session->transport.rmt_ip, session->transport.is_ip4 ?
1421 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1422 clib_net_to_host_u16 (session->transport.rmt_port),
1423 session->session_type ? "UDP" : "TCP", session->session_state,
1424 vppcom_session_state_str (session->session_state));
1428 session->transport.is_ip4 = server_ep->is_ip4;
1429 if (session->transport.is_ip4)
1430 clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
1431 sizeof (ip4_address_t));
1433 clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
1434 sizeof (ip6_address_t));
1435 session->transport.rmt_port = server_ep->port;
1437 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
1439 getpid (), session->vpp_handle, session_handle,
1440 session->transport.is_ip4 ? "IPv4" : "IPv6",
1441 format_ip46_address,
1442 &session->transport.rmt_ip, session->transport.is_ip4 ?
1443 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1444 clib_net_to_host_u16 (session->transport.rmt_port),
1445 session->session_type ? "UDP" : "TCP");
1448 * Send connect request and wait for reply from vpp
1450 vppcom_send_connect_sock (session);
1451 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1452 vcm->cfg.session_timeout);
1454 session = vcl_session_get (wrk, session_index);
1456 if (PREDICT_FALSE (rv))
1458 if (VPPCOM_DEBUG > 0)
1461 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1462 "failed! returning %d (%s)", getpid (),
1463 session->vpp_handle, session_handle, rv,
1464 vppcom_retval_str (rv));
1466 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1467 "returning %d (%s)", getpid (),
1468 session_handle, rv, vppcom_retval_str (rv));
1472 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1473 getpid (), session->vpp_handle, session_handle);
1479 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1482 return (e->event_type == FIFO_EVENT_APP_RX
1483 && e->fifo->client_session_index == sid);
1485 return (e->event_type == SESSION_IO_EVT_CT_TX);
1489 vcl_session_is_readable (vcl_session_t * s)
1491 return ((s->session_state & STATE_OPEN)
1492 || (s->session_state == STATE_LISTEN
1493 && s->session_type == VPPCOM_PROTO_UDP));
1497 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1500 vcl_worker_t *wrk = vcl_worker_get_current ();
1501 int n_read = 0, rv, is_nonblocking;
1502 vcl_session_t *s = 0;
1503 svm_fifo_t *rx_fifo;
1504 svm_msg_q_msg_t msg;
1509 if (PREDICT_FALSE (!buf))
1510 return VPPCOM_EINVAL;
1512 s = vcl_session_get_w_handle (wrk, session_handle);
1513 if (PREDICT_FALSE (!s || s->is_vep))
1514 return VPPCOM_EBADFD;
1516 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1518 session_state_t state = s->session_state;
1519 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1521 VDBG (0, "session handle %u[0x%llx] is not open! state 0x%x (%s),"
1522 " returning %d (%s)", session_handle, s->vpp_handle, state,
1523 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1527 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1528 is_ct = vcl_session_is_ct (s);
1529 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1530 rx_fifo = s->rx_fifo;
1533 if (svm_fifo_is_empty (rx_fifo))
1537 svm_fifo_unset_event (rx_fifo);
1538 return VPPCOM_EWOULDBLOCK;
1540 while (svm_fifo_is_empty (rx_fifo))
1542 svm_fifo_unset_event (rx_fifo);
1543 svm_msg_q_lock (mq);
1544 if (svm_msg_q_is_empty (mq))
1545 svm_msg_q_wait (mq);
1547 svm_msg_q_sub_w_lock (mq, &msg);
1548 e = svm_msg_q_msg_data (mq, &msg);
1549 svm_msg_q_unlock (mq);
1550 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1551 vcl_handle_mq_event (wrk, e);
1552 svm_msg_q_free_msg (mq, &msg);
1554 if (PREDICT_FALSE (s->session_state == STATE_DISCONNECT))
1555 return VPPCOM_ECONNRESET;
1560 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1562 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1564 if (svm_fifo_is_empty (rx_fifo))
1565 svm_fifo_unset_event (rx_fifo);
1567 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1569 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1570 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1574 VDBG (2, "vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1575 s->vpp_handle, session_handle, n_read, rx_fifo);
1581 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1583 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1587 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1589 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1593 vppcom_session_read_segments (uint32_t session_handle,
1594 vppcom_data_segments_t ds)
1596 vcl_worker_t *wrk = vcl_worker_get_current ();
1597 int n_read = 0, rv, is_nonblocking;
1598 vcl_session_t *s = 0;
1599 svm_fifo_t *rx_fifo;
1600 svm_msg_q_msg_t msg;
1605 s = vcl_session_get_w_handle (wrk, session_handle);
1606 if (PREDICT_FALSE (!s || s->is_vep))
1607 return VPPCOM_EBADFD;
1609 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1611 session_state_t state = s->session_state;
1612 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1616 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1617 is_ct = vcl_session_is_ct (s);
1618 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1619 rx_fifo = s->rx_fifo;
1622 if (svm_fifo_is_empty (rx_fifo))
1626 svm_fifo_unset_event (rx_fifo);
1627 return VPPCOM_EWOULDBLOCK;
1629 while (svm_fifo_is_empty (rx_fifo))
1631 svm_fifo_unset_event (rx_fifo);
1632 svm_msg_q_lock (mq);
1633 if (svm_msg_q_is_empty (mq))
1634 svm_msg_q_wait (mq);
1636 svm_msg_q_sub_w_lock (mq, &msg);
1637 e = svm_msg_q_msg_data (mq, &msg);
1638 svm_msg_q_unlock (mq);
1639 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1640 vcl_handle_mq_event (wrk, e);
1641 svm_msg_q_free_msg (mq, &msg);
1643 if (PREDICT_FALSE (s->session_state == STATE_DISCONNECT))
1644 return VPPCOM_ECONNRESET;
1648 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1649 svm_fifo_unset_event (rx_fifo);
1651 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1653 /* If the peer is not polling send notification */
1654 if (!svm_fifo_has_event (s->rx_fifo))
1655 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1656 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1663 vppcom_session_free_segments (uint32_t session_handle,
1664 vppcom_data_segments_t ds)
1666 vcl_worker_t *wrk = vcl_worker_get_current ();
1669 s = vcl_session_get_w_handle (wrk, session_handle);
1670 if (PREDICT_FALSE (!s || s->is_vep))
1673 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1677 vppcom_session_read_ready (vcl_session_t * session)
1679 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1680 if (PREDICT_FALSE (session->is_vep))
1682 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1683 "epoll session!", getpid (), session->session_index);
1684 return VPPCOM_EBADFD;
1687 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1689 session_state_t state = session->session_state;
1692 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1694 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1695 " state 0x%x (%s), returning %d (%s)", getpid (),
1696 session->vpp_handle, session->session_index, state,
1697 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1701 if (session->session_state & STATE_LISTEN)
1702 return clib_fifo_elts (session->accept_evts_fifo);
1704 return svm_fifo_max_dequeue (session->rx_fifo);
1708 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1710 u32 first_copy = clib_min (ds[0].len, max_bytes);
1711 clib_memcpy_fast (buf, ds[0].data, first_copy);
1712 if (first_copy < max_bytes)
1714 clib_memcpy_fast (buf + first_copy, ds[1].data,
1715 clib_min (ds[1].len, max_bytes - first_copy));
1721 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1724 return (e->event_type == FIFO_EVENT_APP_TX
1725 && e->fifo->client_session_index == sid);
1727 return (e->event_type == SESSION_IO_EVT_CT_RX);
1731 vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
1734 vcl_worker_t *wrk = vcl_worker_get_current ();
1735 int rv, n_write, is_nonblocking;
1736 vcl_session_t *s = 0;
1737 svm_fifo_t *tx_fifo = 0;
1738 session_evt_type_t et;
1739 svm_msg_q_msg_t msg;
1744 if (PREDICT_FALSE (!buf))
1745 return VPPCOM_EINVAL;
1747 s = vcl_session_get_w_handle (wrk, session_handle);
1748 if (PREDICT_FALSE (!s))
1749 return VPPCOM_EBADFD;
1751 if (PREDICT_FALSE (s->is_vep))
1753 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1754 "cannot write to an epoll session!",
1755 getpid (), s->vpp_handle, session_handle);
1757 return VPPCOM_EBADFD;
1760 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1762 session_state_t state = s->session_state;
1763 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1764 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1765 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1766 state, vppcom_session_state_str (state));
1770 tx_fifo = s->tx_fifo;
1771 is_ct = vcl_session_is_ct (s);
1772 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1773 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1774 if (svm_fifo_is_full (tx_fifo))
1778 return VPPCOM_EWOULDBLOCK;
1780 while (svm_fifo_is_full (tx_fifo))
1782 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1783 svm_msg_q_lock (mq);
1784 if (svm_msg_q_is_empty (mq))
1785 svm_msg_q_wait (mq);
1787 svm_msg_q_sub_w_lock (mq, &msg);
1788 e = svm_msg_q_msg_data (mq, &msg);
1789 svm_msg_q_unlock (mq);
1791 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1792 vcl_handle_mq_event (wrk, e);
1793 svm_msg_q_free_msg (mq, &msg);
1795 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1796 return VPPCOM_ECONNRESET;
1800 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1801 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1802 if (is_flush && !vcl_session_is_ct (s))
1803 et = SESSION_IO_EVT_TX_FLUSH;
1806 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1807 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1809 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1812 ASSERT (n_write > 0);
1814 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1815 s->vpp_handle, session_handle, n_write);
1821 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1823 return vppcom_session_write_inline (session_handle, buf, n,
1828 vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n)
1830 return vppcom_session_write_inline (session_handle, buf, n,
1835 static vcl_session_t *
1836 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1839 s = vcl_session_get (wrk, f->client_session_index);
1843 if (type == 0 && s->rx_fifo == f)
1846 if (type == 1 && s->tx_fifo == f)
1849 s = vcl_session_get (wrk, f->master_session_index);
1852 if (type == 0 && s->rx_fifo == f)
1854 if (type == 1 && s->tx_fifo == f)
1861 vppcom_session_write_ready (vcl_session_t * session)
1863 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1864 if (PREDICT_FALSE (session->is_vep))
1866 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1867 "cannot write to an epoll session!",
1868 getpid (), session->vpp_handle, session->session_index);
1869 return VPPCOM_EBADFD;
1872 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1874 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1875 "cannot write to a listen session!",
1876 getpid (), session->vpp_handle, session->session_index);
1877 return VPPCOM_EBADFD;
1880 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1882 session_state_t state = session->session_state;
1885 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1886 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1887 "session is not open! state 0x%x (%s), "
1888 "returning %d (%s)", getpid (), session->vpp_handle,
1889 session->session_index,
1890 state, vppcom_session_state_str (state),
1891 rv, vppcom_retval_str (rv));
1895 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1896 getpid (), session->vpp_handle, session->session_index,
1897 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1899 return svm_fifo_max_enqueue (session->tx_fifo);
1903 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1905 svm_msg_q_msg_t *msg;
1909 n_msgs = svm_msg_q_size (mq);
1910 for (i = 0; i < n_msgs; i++)
1912 vec_add2 (wrk->mq_msg_vector, msg, 1);
1913 svm_msg_q_sub_w_lock (mq, msg);
1918 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1919 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1921 svm_fifo_unset_event (_fifo); \
1922 if (svm_fifo_is_empty (_fifo)) \
1927 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1928 unsigned long n_bits, unsigned long *read_map,
1929 unsigned long *write_map,
1930 unsigned long *except_map, u32 * bits_set)
1932 session_disconnected_msg_t *disconnected_msg;
1933 session_connected_msg_t *connected_msg;
1934 vcl_session_t *session;
1937 switch (e->event_type)
1939 case FIFO_EVENT_APP_RX:
1940 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1941 sid = e->fifo->client_session_index;
1942 session = vcl_session_get (wrk, sid);
1945 if (sid < n_bits && read_map)
1947 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
1951 case FIFO_EVENT_APP_TX:
1952 sid = e->fifo->client_session_index;
1953 session = vcl_session_get (wrk, sid);
1956 if (sid < n_bits && write_map)
1958 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
1962 case SESSION_IO_EVT_CT_TX:
1963 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1964 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
1967 sid = session->session_index;
1968 if (sid < n_bits && read_map)
1970 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
1974 case SESSION_IO_EVT_CT_RX:
1975 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
1978 sid = session->session_index;
1979 if (sid < n_bits && write_map)
1981 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
1985 case SESSION_CTRL_EVT_ACCEPTED:
1986 session = vcl_session_accepted (wrk,
1987 (session_accepted_msg_t *) e->data);
1990 sid = session->session_index;
1991 if (sid < n_bits && read_map)
1993 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
1997 case SESSION_CTRL_EVT_CONNECTED:
1998 connected_msg = (session_connected_msg_t *) e->data;
1999 vcl_session_connected_handler (wrk, connected_msg);
2001 case SESSION_CTRL_EVT_DISCONNECTED:
2002 disconnected_msg = (session_disconnected_msg_t *) e->data;
2003 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2006 sid = session->session_index;
2007 if (sid < n_bits && except_map)
2009 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2013 case SESSION_CTRL_EVT_RESET:
2014 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2015 if (sid < n_bits && except_map)
2017 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2022 clib_warning ("unhandled: %u", e->event_type);
2028 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2029 unsigned long n_bits, unsigned long *read_map,
2030 unsigned long *write_map, unsigned long *except_map,
2031 double time_to_wait, u32 * bits_set)
2033 svm_msg_q_msg_t *msg;
2037 svm_msg_q_lock (mq);
2038 if (svm_msg_q_is_empty (mq))
2042 svm_msg_q_unlock (mq);
2048 svm_msg_q_unlock (mq);
2051 else if (time_to_wait < 0)
2053 svm_msg_q_wait (mq);
2057 if (svm_msg_q_timedwait (mq, time_to_wait))
2059 svm_msg_q_unlock (mq);
2064 vcl_mq_dequeue_batch (wrk, mq);
2065 svm_msg_q_unlock (mq);
2067 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2069 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2070 e = svm_msg_q_msg_data (mq, msg);
2071 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
2072 except_map, bits_set);
2073 svm_msg_q_free_msg (mq, msg);
2075 vec_reset_length (wrk->mq_msg_vector);
2080 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
2081 unsigned long *read_map, unsigned long *write_map,
2082 unsigned long *except_map, double time_to_wait,
2085 double total_wait = 0, wait_slice;
2086 vcl_cut_through_registration_t *cr;
2088 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
2089 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
2092 vcl_ct_registration_lock (wrk);
2094 pool_foreach (cr, wrk->cut_through_registrations, ({
2095 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
2099 vcl_ct_registration_unlock (wrk);
2101 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2102 write_map, except_map, time_to_wait, bits_set);
2103 total_wait += wait_slice;
2107 while (total_wait < time_to_wait);
2113 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
2114 unsigned long *read_map, unsigned long *write_map,
2115 unsigned long *except_map, double time_to_wait,
2118 vcl_mq_evt_conn_t *mqc;
2119 int __clib_unused n_read;
2123 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2124 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2125 vec_len (wrk->mq_events), time_to_wait);
2126 for (i = 0; i < n_mq_evts; i++)
2128 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2129 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2130 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2131 except_map, 0, bits_set);
2134 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2138 vppcom_select (unsigned long n_bits, unsigned long *read_map,
2139 unsigned long *write_map, unsigned long *except_map,
2140 double time_to_wait)
2142 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2143 vcl_worker_t *wrk = vcl_worker_get_current ();
2144 vcl_session_t *session = 0;
2147 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (unsigned long),
2148 "vppcom bitmap size mismatch");
2149 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (fd_mask),
2150 "vppcom bitmap size mismatch");
2151 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (uword),
2152 "vppcom bitmap size mismatch");
2154 if (n_bits && read_map)
2156 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2157 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2158 vec_len (wrk->rd_bitmap) * sizeof (unsigned long));
2159 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (unsigned long));
2161 if (n_bits && write_map)
2163 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2164 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2165 vec_len (wrk->wr_bitmap) * sizeof (unsigned long));
2166 memset (write_map, 0,
2167 vec_len (wrk->wr_bitmap) * sizeof (unsigned long));
2169 if (n_bits && except_map)
2171 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2172 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2173 vec_len (wrk->ex_bitmap) * sizeof (unsigned long));
2174 memset (except_map, 0,
2175 vec_len (wrk->ex_bitmap) * sizeof (unsigned long));
2185 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2186 if (!(session = vcl_session_get (wrk, sid)))
2188 if (except_map && sid < minbits)
2189 clib_bitmap_set_no_check (except_map, sid, 1);
2193 rv = svm_fifo_is_full (session->tx_fifo);
2196 clib_bitmap_set_no_check ((uword*)write_map, sid, 1);
2205 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2206 if (!(session = vcl_session_get (wrk, sid)))
2208 if (except_map && sid < minbits)
2209 clib_bitmap_set_no_check (except_map, sid, 1);
2213 rv = vppcom_session_read_ready (session);
2216 clib_bitmap_set_no_check ((uword*)read_map, sid, 1);
2224 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2226 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2227 read_map, write_map, except_map, &bits_set);
2229 vec_reset_length (wrk->unhandled_evts_vector);
2231 if (vcm->cfg.use_mq_eventfd)
2232 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2233 time_to_wait, &bits_set);
2235 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2236 time_to_wait, &bits_set);
2242 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2244 vcl_session_t *session;
2245 vppcom_epoll_t *vep;
2248 if (VPPCOM_DEBUG <= 1)
2251 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2252 session = vcl_session_get (wrk, vep_idx);
2253 if (PREDICT_FALSE (!session))
2255 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2256 getpid (), vep_idx);
2259 if (PREDICT_FALSE (!session->is_vep))
2261 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2262 getpid (), vep_idx);
2265 vep = &session->vep;
2266 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2269 " is_vep_session = %u\n"
2270 " next_sid = 0x%x (%u)\n"
2271 " wait_cont_idx = 0x%x (%u)\n"
2272 "}\n", getpid (), vep_idx,
2273 session->is_vep, session->is_vep_session,
2274 vep->next_sh, vep->next_sh,
2275 session->wait_cont_idx, session->wait_cont_idx);
2277 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2279 session = vcl_session_get (wrk, sid);
2280 if (PREDICT_FALSE (!session))
2282 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2285 if (PREDICT_FALSE (session->is_vep))
2286 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2287 getpid (), vep_idx);
2288 else if (PREDICT_FALSE (!session->is_vep_session))
2290 clib_warning ("VCL<%d>: ERROR: session (%u) "
2291 "is not a vep session!", getpid (), sid);
2294 vep = &session->vep;
2295 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2296 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2297 "vep_idx (%u)!", getpid (),
2298 sid, session->vep.vep_sh, vep_idx);
2299 if (session->is_vep_session)
2301 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2303 " next_sid = 0x%x (%u)\n"
2304 " prev_sid = 0x%x (%u)\n"
2305 " vep_idx = 0x%x (%u)\n"
2306 " ev.events = 0x%x\n"
2307 " ev.data.u64 = 0x%llx\n"
2311 vep->next_sh, vep->next_sh,
2312 vep->prev_sh, vep->prev_sh,
2313 vep->vep_sh, vep->vep_sh,
2314 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2319 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2320 getpid (), vep_idx);
2324 vppcom_epoll_create (void)
2326 vcl_worker_t *wrk = vcl_worker_get_current ();
2327 vcl_session_t *vep_session;
2329 vep_session = vcl_session_alloc (wrk);
2331 vep_session->is_vep = 1;
2332 vep_session->vep.vep_sh = ~0;
2333 vep_session->vep.next_sh = ~0;
2334 vep_session->vep.prev_sh = ~0;
2335 vep_session->wait_cont_idx = ~0;
2336 vep_session->vpp_handle = ~0;
2338 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_session->session_index);
2339 VDBG (0, "Created vep_idx %u", vep_session->session_index);
2341 return vcl_session_handle (vep_session);
2345 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2346 struct epoll_event *event)
2348 vcl_worker_t *wrk = vcl_worker_get_current ();
2349 vcl_session_t *vep_session;
2350 vcl_session_t *session;
2353 if (vep_handle == session_handle)
2355 VDBG (0, "vep_sh == session handle (%u)!", vep_handle);
2356 return VPPCOM_EINVAL;
2359 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2360 if (PREDICT_FALSE (!vep_session))
2362 VDBG (0, "Invalid vep_sh (%u)!", vep_handle);
2363 return VPPCOM_EBADFD;
2365 if (PREDICT_FALSE (!vep_session->is_vep))
2367 VDBG (0, "vep_sh (%u) is not a vep!", vep_handle);
2368 return VPPCOM_EINVAL;
2371 ASSERT (vep_session->vep.vep_sh == ~0);
2372 ASSERT (vep_session->vep.prev_sh == ~0);
2374 session = vcl_session_get_w_handle (wrk, session_handle);
2375 if (PREDICT_FALSE (!session))
2377 VDBG (0, "Invalid session_handle (%u)!", session_handle);
2378 return VPPCOM_EBADFD;
2380 if (PREDICT_FALSE (session->is_vep))
2382 VDBG (0, "session_handle (%u) is a vep!", vep_handle);
2383 return VPPCOM_EINVAL;
2389 if (PREDICT_FALSE (!event))
2391 VDBG (0, "EPOLL_CTL_ADD: NULL pointer to epoll_event structure!");
2392 return VPPCOM_EINVAL;
2394 if (vep_session->vep.next_sh != ~0)
2396 vcl_session_t *next_session;
2397 next_session = vcl_session_get_w_handle (wrk,
2398 vep_session->vep.next_sh);
2399 if (PREDICT_FALSE (!next_session))
2401 VDBG (0, "EPOLL_CTL_ADD: Invalid vep.next_sid (%u) on "
2402 "vep_idx (%u)!", vep_session->vep.next_sh, vep_handle);
2403 return VPPCOM_EBADFD;
2405 ASSERT (next_session->vep.prev_sh == vep_handle);
2406 next_session->vep.prev_sh = session_handle;
2408 session->vep.next_sh = vep_session->vep.next_sh;
2409 session->vep.prev_sh = vep_handle;
2410 session->vep.vep_sh = vep_handle;
2411 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2412 session->vep.ev = *event;
2413 session->is_vep = 0;
2414 session->is_vep_session = 1;
2415 vep_session->vep.next_sh = session_handle;
2417 VDBG (1, "EPOLL_CTL_ADD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
2418 vep_handle, session_handle, event->events, event->data.u64);
2419 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2423 if (PREDICT_FALSE (!event))
2425 VDBG (0, "EPOLL_CTL_MOD: NULL pointer to epoll_event structure!");
2429 else if (PREDICT_FALSE (!session->is_vep_session))
2431 VDBG (0, "sid %u EPOLL_CTL_MOD: not a vep session!",
2436 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2438 VDBG (0, "EPOLL_CTL_MOD: sh %u vep_sh (%u) != vep_sh (%u)!",
2439 session_handle, session->vep.vep_sh, vep_handle);
2443 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2444 session->vep.ev = *event;
2445 VDBG (1, "EPOLL_CTL_MOD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
2446 vep_handle, session_handle, event->events, event->data.u64);
2450 if (PREDICT_FALSE (!session->is_vep_session))
2452 VDBG (0, "EPOLL_CTL_DEL: %u not a vep session!", session_handle);
2456 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2458 VDBG (0, "EPOLL_CTL_DEL: sh %u vep_sh (%u) != vep_sh (%u)!",
2459 session_handle, session->vep.vep_sh, vep_handle);
2464 vep_session->wait_cont_idx =
2465 (vep_session->wait_cont_idx == session_handle) ?
2466 session->vep.next_sh : vep_session->wait_cont_idx;
2468 if (session->vep.prev_sh == vep_handle)
2469 vep_session->vep.next_sh = session->vep.next_sh;
2472 vcl_session_t *prev_session;
2473 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2474 if (PREDICT_FALSE (!prev_session))
2476 VDBG (0, "EPOLL_CTL_DEL: Invalid prev_sid (%u) on sid (%u)!",
2477 session->vep.prev_sh, session_handle);
2478 return VPPCOM_EBADFD;
2480 ASSERT (prev_session->vep.next_sh == session_handle);
2481 prev_session->vep.next_sh = session->vep.next_sh;
2483 if (session->vep.next_sh != ~0)
2485 vcl_session_t *next_session;
2486 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2487 if (PREDICT_FALSE (!next_session))
2489 VDBG (0, "EPOLL_CTL_DEL: Invalid next_sid (%u) on sid (%u)!",
2490 session->vep.next_sh, session_handle);
2491 return VPPCOM_EBADFD;
2493 ASSERT (next_session->vep.prev_sh == session_handle);
2494 next_session->vep.prev_sh = session->vep.prev_sh;
2497 memset (&session->vep, 0, sizeof (session->vep));
2498 session->vep.next_sh = ~0;
2499 session->vep.prev_sh = ~0;
2500 session->vep.vep_sh = ~0;
2501 session->is_vep_session = 0;
2502 VDBG (1, "EPOLL_CTL_DEL: vep_idx %u, sid %u!", vep_handle,
2504 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2508 VDBG (0, "Invalid operation (%d)!", op);
2512 vep_verify_epoll_chain (wrk, vep_handle);
2519 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2520 struct epoll_event *events, u32 * num_ev)
2522 session_disconnected_msg_t *disconnected_msg;
2523 session_connected_msg_t *connected_msg;
2524 u32 sid = ~0, session_events;
2525 u64 session_evt_data = ~0;
2526 vcl_session_t *session;
2529 switch (e->event_type)
2531 case FIFO_EVENT_APP_RX:
2532 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2533 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2534 sid = e->fifo->client_session_index;
2535 if (!(session = vcl_session_get (wrk, sid)))
2537 session_events = session->vep.ev.events;
2538 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2541 events[*num_ev].events |= EPOLLIN;
2542 session_evt_data = session->vep.ev.data.u64;
2543 session->has_rx_evt = 1;
2545 case FIFO_EVENT_APP_TX:
2546 sid = e->fifo->client_session_index;
2547 if (!(session = vcl_session_get (wrk, sid)))
2549 session_events = session->vep.ev.events;
2550 if (!(EPOLLOUT & session_events))
2553 events[*num_ev].events |= EPOLLOUT;
2554 session_evt_data = session->vep.ev.data.u64;
2556 case SESSION_IO_EVT_CT_TX:
2557 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2558 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2559 if (PREDICT_FALSE (!session))
2561 sid = session->session_index;
2562 session_events = session->vep.ev.events;
2563 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2566 events[*num_ev].events |= EPOLLIN;
2567 session_evt_data = session->vep.ev.data.u64;
2568 session->has_rx_evt = 1;
2570 case SESSION_IO_EVT_CT_RX:
2571 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2572 if (PREDICT_FALSE (!session))
2574 sid = session->session_index;
2575 session_events = session->vep.ev.events;
2576 if (!(EPOLLOUT & session_events))
2579 events[*num_ev].events |= EPOLLOUT;
2580 session_evt_data = session->vep.ev.data.u64;
2582 case SESSION_CTRL_EVT_ACCEPTED:
2583 session = vcl_session_accepted (wrk,
2584 (session_accepted_msg_t *) e->data);
2588 session_events = session->vep.ev.events;
2589 if (!(EPOLLIN & session_events))
2593 events[*num_ev].events |= EPOLLIN;
2594 session_evt_data = session->vep.ev.data.u64;
2596 case SESSION_CTRL_EVT_CONNECTED:
2597 connected_msg = (session_connected_msg_t *) e->data;
2598 vcl_session_connected_handler (wrk, connected_msg);
2599 /* Generate EPOLLOUT because there's no connected event */
2600 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2601 if (!(session = vcl_session_get (wrk, sid)))
2603 session_events = session->vep.ev.events;
2604 if (EPOLLOUT & session_events)
2607 events[*num_ev].events |= EPOLLOUT;
2608 session_evt_data = session->vep.ev.data.u64;
2611 case SESSION_CTRL_EVT_DISCONNECTED:
2612 disconnected_msg = (session_disconnected_msg_t *) e->data;
2613 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2617 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2618 session_evt_data = session->vep.ev.data.u64;
2619 session_events = session->vep.ev.events;
2621 case SESSION_CTRL_EVT_RESET:
2622 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2623 if (!(session = vcl_session_get (wrk, sid)))
2626 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2627 session_evt_data = session->vep.ev.data.u64;
2628 session_events = session->vep.ev.events;
2631 VDBG (0, "unhandled: %u", e->event_type);
2637 events[*num_ev].data.u64 = session_evt_data;
2638 if (EPOLLONESHOT & session_events)
2640 session = vcl_session_get (wrk, sid);
2641 session->vep.ev.events = 0;
2648 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2649 struct epoll_event *events, u32 maxevents,
2650 double wait_for_time, u32 * num_ev)
2652 svm_msg_q_msg_t *msg;
2656 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2657 goto handle_dequeued;
2659 svm_msg_q_lock (mq);
2660 if (svm_msg_q_is_empty (mq))
2664 svm_msg_q_unlock (mq);
2667 else if (wait_for_time < 0)
2669 svm_msg_q_wait (mq);
2673 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2675 svm_msg_q_unlock (mq);
2680 vcl_mq_dequeue_batch (wrk, mq);
2681 svm_msg_q_unlock (mq);
2684 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2686 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2687 e = svm_msg_q_msg_data (mq, msg);
2688 if (*num_ev < maxevents)
2689 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2691 vec_add1 (wrk->unhandled_evts_vector, *e);
2692 svm_msg_q_free_msg (mq, msg);
2694 vec_reset_length (wrk->mq_msg_vector);
2700 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2701 int maxevents, u32 n_evts, double wait_for_time)
2703 vcl_cut_through_registration_t *cr;
2704 double total_wait = 0, wait_slice;
2707 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2708 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2712 vcl_ct_registration_lock (wrk);
2714 pool_foreach (cr, wrk->cut_through_registrations, ({
2715 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2718 vcl_ct_registration_unlock (wrk);
2720 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2721 maxevents, n_evts ? 0 : wait_slice,
2724 total_wait += wait_slice;
2728 while (total_wait < wait_for_time);
2733 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2734 int maxevents, u32 n_evts, double wait_for_time)
2736 vcl_mq_evt_conn_t *mqc;
2737 int __clib_unused n_read;
2741 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2743 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2744 vec_len (wrk->mq_events), wait_for_time);
2745 for (i = 0; i < n_mq_evts; i++)
2747 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2748 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2749 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2751 if (!n_evts && n_mq_evts > 0)
2754 return (int) n_evts;
2758 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2759 int maxevents, double wait_for_time)
2761 vcl_worker_t *wrk = vcl_worker_get_current ();
2762 vcl_session_t *vep_session;
2766 if (PREDICT_FALSE (maxevents <= 0))
2768 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2769 getpid (), maxevents);
2770 return VPPCOM_EINVAL;
2773 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2775 return VPPCOM_EBADFD;
2777 if (PREDICT_FALSE (!vep_session->is_vep))
2779 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2780 getpid (), vep_handle);
2781 return VPPCOM_EINVAL;
2784 memset (events, 0, sizeof (*events) * maxevents);
2786 if (vec_len (wrk->unhandled_evts_vector))
2788 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2790 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2792 if (n_evts == maxevents)
2799 vec_delete (wrk->unhandled_evts_vector, i, 0);
2802 if (vcm->cfg.use_mq_eventfd)
2803 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2806 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2811 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2812 void *buffer, uint32_t * buflen)
2814 vcl_worker_t *wrk = vcl_worker_get_current ();
2815 vcl_session_t *session;
2817 u32 *flags = buffer;
2818 vppcom_endpt_t *ep = buffer;
2820 session = vcl_session_get_w_handle (wrk, session_handle);
2822 return VPPCOM_EBADFD;
2826 case VPPCOM_ATTR_GET_NREAD:
2827 rv = vppcom_session_read_ready (session);
2828 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2832 case VPPCOM_ATTR_GET_NWRITE:
2833 rv = vppcom_session_write_ready (session);
2834 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2835 getpid (), session_handle, rv);
2838 case VPPCOM_ATTR_GET_FLAGS:
2839 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2841 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2842 VCL_SESS_ATTR_NONBLOCK));
2843 *buflen = sizeof (*flags);
2844 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2845 "is_nonblocking = %u", getpid (),
2846 session_handle, *flags,
2847 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2853 case VPPCOM_ATTR_SET_FLAGS:
2854 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2856 if (*flags & O_NONBLOCK)
2857 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2859 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2861 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2862 " is_nonblocking = %u",
2863 getpid (), session_handle, *flags,
2864 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2870 case VPPCOM_ATTR_GET_PEER_ADDR:
2871 if (PREDICT_TRUE (buffer && buflen &&
2872 (*buflen >= sizeof (*ep)) && ep->ip))
2874 ep->is_ip4 = session->transport.is_ip4;
2875 ep->port = session->transport.rmt_port;
2876 if (session->transport.is_ip4)
2877 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2878 sizeof (ip4_address_t));
2880 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2881 sizeof (ip6_address_t));
2882 *buflen = sizeof (*ep);
2883 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2884 "addr = %U, port %u", getpid (),
2885 session_handle, ep->is_ip4, format_ip46_address,
2886 &session->transport.rmt_ip,
2887 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2888 clib_net_to_host_u16 (ep->port));
2894 case VPPCOM_ATTR_GET_LCL_ADDR:
2895 if (PREDICT_TRUE (buffer && buflen &&
2896 (*buflen >= sizeof (*ep)) && ep->ip))
2898 ep->is_ip4 = session->transport.is_ip4;
2899 ep->port = session->transport.lcl_port;
2900 if (session->transport.is_ip4)
2901 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
2902 sizeof (ip4_address_t));
2904 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
2905 sizeof (ip6_address_t));
2906 *buflen = sizeof (*ep);
2907 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2908 " addr = %U port %d", getpid (),
2909 session_handle, ep->is_ip4, format_ip46_address,
2910 &session->transport.lcl_ip,
2911 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2912 clib_net_to_host_u16 (ep->port));
2918 case VPPCOM_ATTR_GET_LIBC_EPFD:
2919 rv = session->libc_epfd;
2920 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2924 case VPPCOM_ATTR_SET_LIBC_EPFD:
2925 if (PREDICT_TRUE (buffer && buflen &&
2926 (*buflen == sizeof (session->libc_epfd))))
2928 session->libc_epfd = *(int *) buffer;
2929 *buflen = sizeof (session->libc_epfd);
2931 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2932 "buflen %d", getpid (), session->libc_epfd, *buflen);
2938 case VPPCOM_ATTR_GET_PROTOCOL:
2939 if (buffer && buflen && (*buflen >= sizeof (int)))
2941 *(int *) buffer = session->session_type;
2942 *buflen = sizeof (int);
2944 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2945 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
2952 case VPPCOM_ATTR_GET_LISTEN:
2953 if (buffer && buflen && (*buflen >= sizeof (int)))
2955 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2956 VCL_SESS_ATTR_LISTEN);
2957 *buflen = sizeof (int);
2959 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
2960 getpid (), *(int *) buffer, *buflen);
2966 case VPPCOM_ATTR_GET_ERROR:
2967 if (buffer && buflen && (*buflen >= sizeof (int)))
2969 *(int *) buffer = 0;
2970 *buflen = sizeof (int);
2972 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
2973 getpid (), *(int *) buffer, *buflen);
2979 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
2980 if (buffer && buflen && (*buflen >= sizeof (u32)))
2984 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
2985 session->tx_fifo ? session->tx_fifo->nitems :
2986 vcm->cfg.tx_fifo_size);
2987 *buflen = sizeof (u32);
2989 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
2990 "buflen %d, #VPP-TBD#", getpid (),
2991 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2997 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
2998 if (buffer && buflen && (*buflen == sizeof (u32)))
3001 session->sndbuf_size = *(u32 *) buffer;
3002 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
3003 "buflen %d, #VPP-TBD#", getpid (),
3004 session->sndbuf_size, session->sndbuf_size, *buflen);
3010 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
3011 if (buffer && buflen && (*buflen >= sizeof (u32)))
3015 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
3016 session->rx_fifo ? session->rx_fifo->nitems :
3017 vcm->cfg.rx_fifo_size);
3018 *buflen = sizeof (u32);
3020 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
3021 "buflen %d, #VPP-TBD#", getpid (),
3022 *(size_t *) buffer, *(size_t *) buffer, *buflen);
3028 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
3029 if (buffer && buflen && (*buflen == sizeof (u32)))
3032 session->rcvbuf_size = *(u32 *) buffer;
3033 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
3034 "buflen %d, #VPP-TBD#", getpid (),
3035 session->sndbuf_size, session->sndbuf_size, *buflen);
3041 case VPPCOM_ATTR_GET_REUSEADDR:
3042 if (buffer && buflen && (*buflen >= sizeof (int)))
3045 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3046 VCL_SESS_ATTR_REUSEADDR);
3047 *buflen = sizeof (int);
3049 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
3050 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3056 case VPPCOM_ATTR_SET_REUSEADDR:
3057 if (buffer && buflen && (*buflen == sizeof (int)) &&
3058 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3061 if (*(int *) buffer)
3062 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
3064 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
3066 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
3067 " #VPP-TBD#", getpid (),
3068 VCL_SESS_ATTR_TEST (session->attr,
3069 VCL_SESS_ATTR_REUSEADDR), *buflen);
3075 case VPPCOM_ATTR_GET_REUSEPORT:
3076 if (buffer && buflen && (*buflen >= sizeof (int)))
3079 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3080 VCL_SESS_ATTR_REUSEPORT);
3081 *buflen = sizeof (int);
3083 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
3084 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3090 case VPPCOM_ATTR_SET_REUSEPORT:
3091 if (buffer && buflen && (*buflen == sizeof (int)) &&
3092 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3095 if (*(int *) buffer)
3096 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
3098 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
3100 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
3101 " #VPP-TBD#", getpid (),
3102 VCL_SESS_ATTR_TEST (session->attr,
3103 VCL_SESS_ATTR_REUSEPORT), *buflen);
3109 case VPPCOM_ATTR_GET_BROADCAST:
3110 if (buffer && buflen && (*buflen >= sizeof (int)))
3113 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3114 VCL_SESS_ATTR_BROADCAST);
3115 *buflen = sizeof (int);
3117 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
3118 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3124 case VPPCOM_ATTR_SET_BROADCAST:
3125 if (buffer && buflen && (*buflen == sizeof (int)))
3128 if (*(int *) buffer)
3129 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
3131 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
3133 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
3134 "#VPP-TBD#", getpid (),
3135 VCL_SESS_ATTR_TEST (session->attr,
3136 VCL_SESS_ATTR_BROADCAST), *buflen);
3142 case VPPCOM_ATTR_GET_V6ONLY:
3143 if (buffer && buflen && (*buflen >= sizeof (int)))
3146 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3147 VCL_SESS_ATTR_V6ONLY);
3148 *buflen = sizeof (int);
3150 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
3151 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3157 case VPPCOM_ATTR_SET_V6ONLY:
3158 if (buffer && buflen && (*buflen == sizeof (int)))
3161 if (*(int *) buffer)
3162 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3164 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3166 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
3167 "#VPP-TBD#", getpid (),
3168 VCL_SESS_ATTR_TEST (session->attr,
3169 VCL_SESS_ATTR_V6ONLY), *buflen);
3175 case VPPCOM_ATTR_GET_KEEPALIVE:
3176 if (buffer && buflen && (*buflen >= sizeof (int)))
3179 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3180 VCL_SESS_ATTR_KEEPALIVE);
3181 *buflen = sizeof (int);
3183 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3184 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3190 case VPPCOM_ATTR_SET_KEEPALIVE:
3191 if (buffer && buflen && (*buflen == sizeof (int)))
3194 if (*(int *) buffer)
3195 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3197 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3199 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3200 "#VPP-TBD#", getpid (),
3201 VCL_SESS_ATTR_TEST (session->attr,
3202 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3208 case VPPCOM_ATTR_GET_TCP_NODELAY:
3209 if (buffer && buflen && (*buflen >= sizeof (int)))
3212 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3213 VCL_SESS_ATTR_TCP_NODELAY);
3214 *buflen = sizeof (int);
3216 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3217 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3223 case VPPCOM_ATTR_SET_TCP_NODELAY:
3224 if (buffer && buflen && (*buflen == sizeof (int)))
3227 if (*(int *) buffer)
3228 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3230 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3232 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3233 "#VPP-TBD#", getpid (),
3234 VCL_SESS_ATTR_TEST (session->attr,
3235 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3241 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3242 if (buffer && buflen && (*buflen >= sizeof (int)))
3245 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3246 VCL_SESS_ATTR_TCP_KEEPIDLE);
3247 *buflen = sizeof (int);
3249 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3250 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3256 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3257 if (buffer && buflen && (*buflen == sizeof (int)))
3260 if (*(int *) buffer)
3261 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3263 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3265 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3266 "#VPP-TBD#", getpid (),
3267 VCL_SESS_ATTR_TEST (session->attr,
3268 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3274 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3275 if (buffer && buflen && (*buflen >= sizeof (int)))
3278 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3279 VCL_SESS_ATTR_TCP_KEEPINTVL);
3280 *buflen = sizeof (int);
3282 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3283 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3289 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3290 if (buffer && buflen && (*buflen == sizeof (int)))
3293 if (*(int *) buffer)
3294 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3296 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3298 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3299 "#VPP-TBD#", getpid (),
3300 VCL_SESS_ATTR_TEST (session->attr,
3301 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3307 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3308 if (buffer && buflen && (*buflen >= sizeof (u32)))
3311 *(u32 *) buffer = session->user_mss;
3312 *buflen = sizeof (int);
3314 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3315 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3321 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3322 if (buffer && buflen && (*buflen == sizeof (u32)))
3325 session->user_mss = *(u32 *) buffer;
3327 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3328 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3334 case VPPCOM_ATTR_GET_REFCNT:
3335 rv = vcl_session_get_refcnt (session);
3347 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3348 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3350 vcl_worker_t *wrk = vcl_worker_get_current ();
3352 vcl_session_t *session = 0;
3356 session = vcl_session_get_w_handle (wrk, session_handle);
3357 if (PREDICT_FALSE (!session))
3359 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3360 getpid (), session_handle);
3361 return VPPCOM_EBADFD;
3363 ep->is_ip4 = session->transport.is_ip4;
3364 ep->port = session->transport.rmt_port;
3368 rv = vppcom_session_read (session_handle, buffer, buflen);
3369 else if (flags & MSG_PEEK)
3370 rv = vppcom_session_peek (session_handle, buffer, buflen);
3373 VDBG (0, "Unsupport flags for recvfrom %d", flags);
3374 return VPPCOM_EAFNOSUPPORT;
3379 if (session->transport.is_ip4)
3380 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3381 sizeof (ip4_address_t));
3383 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3384 sizeof (ip6_address_t));
3391 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3392 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3395 return VPPCOM_EINVAL;
3400 return VPPCOM_EINVAL;
3405 // TBD check the flags and do the right thing
3406 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3407 getpid (), flags, flags);
3410 return (vppcom_session_write_inline (session_handle, buffer, buflen, 1));
3414 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3416 vcl_worker_t *wrk = vcl_worker_get_current ();
3417 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3418 u32 i, keep_trying = 1;
3419 svm_msg_q_msg_t msg;
3423 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3424 getpid (), vp, n_sids, wait_for_time);
3427 return VPPCOM_EFAULT;
3431 vcl_session_t *session;
3433 /* Dequeue all events and drop all unhandled io events */
3434 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3436 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3437 vcl_handle_mq_event (wrk, e);
3438 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3440 vec_reset_length (wrk->unhandled_evts_vector);
3442 for (i = 0; i < n_sids; i++)
3444 session = vcl_session_get (wrk, vp[i].sid);
3447 vp[i].revents = POLLHUP;
3454 if (POLLIN & vp[i].events)
3456 rv = vppcom_session_read_ready (session);
3459 vp[i].revents |= POLLIN;
3466 case VPPCOM_ECONNRESET:
3467 vp[i].revents = POLLHUP;
3471 vp[i].revents = POLLERR;
3478 if (POLLOUT & vp[i].events)
3480 rv = vppcom_session_write_ready (session);
3483 vp[i].revents |= POLLOUT;
3490 case VPPCOM_ECONNRESET:
3491 vp[i].revents = POLLHUP;
3495 vp[i].revents = POLLERR;
3502 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3504 vp[i].revents = POLLNVAL;
3508 if (wait_for_time != -1)
3509 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3511 while ((num_ev == 0) && keep_trying);
3513 if (VPPCOM_DEBUG > 3)
3515 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3516 for (i = 0; i < n_sids; i++)
3518 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3519 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3520 vp[i].events, vp[i].revents);
3527 vppcom_mq_epoll_fd (void)
3529 vcl_worker_t *wrk = vcl_worker_get_current ();
3530 return wrk->mqs_epfd;
3534 vppcom_session_index (uint32_t session_handle)
3536 return session_handle & 0xFFFFFF;
3540 vppcom_session_handle (uint32_t session_index)
3542 return (vcl_get_worker_index () << 24) | session_index;
3546 vppcom_worker_register (void)
3548 if (!vcl_worker_alloc_and_init ())
3549 return VPPCOM_EEXIST;
3551 if (vcl_worker_set_bapi ())
3552 return VPPCOM_EEXIST;
3554 if (vcl_worker_register_with_vpp ())
3555 return VPPCOM_EEXIST;
3561 vppcom_worker_index (void)
3563 return vcl_get_worker_index ();
3567 * fd.io coding-style-patch-verification: ON
3570 * eval: (c-set-style "gnu")