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;
434 if (session->session_state >= STATE_VPP_CLOSING)
437 /* Caught a reset before actually accepting the session */
438 if (session->session_state == STATE_LISTEN)
441 if (!vcl_flag_accepted_session (session, reset_msg->handle,
442 VCL_ACCEPTED_F_RESET))
443 VDBG (0, "session was not accepted!");
444 return VCL_INVALID_SESSION_INDEX;
447 session->session_state = STATE_DISCONNECT;
448 VDBG (0, "reset session %u [0x%llx]", sid, reset_msg->handle);
449 vcl_send_session_reset_reply (vcl_session_vpp_evt_q (wrk, session),
450 wrk->my_client_index, reset_msg->handle, 0);
455 vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp)
457 vcl_session_t *session;
458 u32 sid = mp->context;
460 session = vcl_session_get (wrk, sid);
463 VERR ("vpp handle 0x%llx, sid %u: bind failed: %U", mp->handle, sid,
464 format_api_error, mp->retval);
467 session->session_state = STATE_FAILED;
468 session->vpp_handle = mp->handle;
473 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
474 "Invalid session index (%u)!",
475 getpid (), mp->handle, sid);
476 return VCL_INVALID_SESSION_INDEX;
480 session->vpp_handle = mp->handle;
481 session->transport.is_ip4 = mp->lcl_is_ip4;
482 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
483 sizeof (ip46_address_t));
484 session->transport.lcl_port = mp->lcl_port;
485 vcl_session_table_add_listener (wrk, mp->handle, sid);
486 session->session_state = STATE_LISTEN;
488 if (session->is_dgram)
490 svm_fifo_t *rx_fifo, *tx_fifo;
491 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
492 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
493 rx_fifo->client_session_index = sid;
494 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
495 tx_fifo->client_session_index = sid;
496 session->rx_fifo = rx_fifo;
497 session->tx_fifo = tx_fifo;
500 VDBG (0, "session %u [0x%llx]: listen succeeded!", sid, mp->handle);
504 static vcl_session_t *
505 vcl_session_accepted (vcl_worker_t * wrk, session_accepted_msg_t * msg)
507 vcl_session_msg_t *vcl_msg;
508 vcl_session_t *session;
510 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
511 if (PREDICT_FALSE (session != 0))
512 VWRN ("session handle overlap %lu!", msg->handle);
514 session = vcl_session_table_lookup_listener (wrk, msg->listener_handle);
517 VERR ("couldn't find listen session: listener handle %llx",
518 msg->listener_handle);
522 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
523 vcl_msg->accepted_msg = *msg;
524 /* Session handle points to listener until fully accepted by app */
525 vcl_session_table_add_vpp_handle (wrk, msg->handle, session->session_index);
530 static vcl_session_t *
531 vcl_session_disconnected_handler (vcl_worker_t * wrk,
532 session_disconnected_msg_t * msg)
534 vcl_session_t *session;
536 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
539 VDBG (0, "request to disconnect unknown handle 0x%llx", msg->handle);
543 /* Caught a disconnect before actually accepting the session */
544 if (session->session_state == STATE_LISTEN)
547 if (!vcl_flag_accepted_session (session, msg->handle,
548 VCL_ACCEPTED_F_CLOSED))
549 VDBG (0, "session was not accepted!");
553 session->session_state = STATE_VPP_CLOSING;
558 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
560 session_disconnected_msg_t *disconnected_msg;
561 vcl_session_t *session;
563 switch (e->event_type)
565 case FIFO_EVENT_APP_RX:
566 case FIFO_EVENT_APP_TX:
567 case SESSION_IO_EVT_CT_RX:
568 case SESSION_IO_EVT_CT_TX:
569 vec_add1 (wrk->unhandled_evts_vector, *e);
571 case SESSION_CTRL_EVT_ACCEPTED:
572 vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
574 case SESSION_CTRL_EVT_CONNECTED:
575 vcl_session_connected_handler (wrk,
576 (session_connected_msg_t *) e->data);
578 case SESSION_CTRL_EVT_DISCONNECTED:
579 disconnected_msg = (session_disconnected_msg_t *) e->data;
580 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
583 session->session_state = STATE_DISCONNECT;
584 VDBG (0, "disconnected session %u [0x%llx]", session->session_index,
585 session->vpp_handle);
587 case SESSION_CTRL_EVT_RESET:
588 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
590 case SESSION_CTRL_EVT_BOUND:
591 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
594 clib_warning ("unhandled %u", e->event_type);
600 vppcom_wait_for_session_state_change (u32 session_index,
601 session_state_t state,
604 vcl_worker_t *wrk = vcl_worker_get_current ();
605 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
606 vcl_session_t *volatile session;
612 session = vcl_session_get (wrk, session_index);
613 if (PREDICT_FALSE (!session))
615 return VPPCOM_EBADFD;
617 if (session->session_state & state)
621 if (session->session_state & STATE_FAILED)
623 return VPPCOM_ECONNREFUSED;
626 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
631 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
632 vcl_handle_mq_event (wrk, e);
633 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
635 while (clib_time_now (&wrk->clib_time) < timeout);
637 VDBG (0, "timeout waiting for state 0x%x (%s)", state,
638 vppcom_session_state_str (state));
639 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
641 return VPPCOM_ETIMEDOUT;
645 vppcom_app_session_enable (void)
649 if (vcm->app_state != STATE_APP_ENABLED)
651 vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
652 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
653 if (PREDICT_FALSE (rv))
655 VDBG (0, "VCL<%d>: application session enable timed out! "
656 "returning %d (%s)", getpid (), rv, vppcom_retval_str (rv));
664 vppcom_app_attach (void)
668 vppcom_app_send_attach ();
669 rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED);
670 if (PREDICT_FALSE (rv))
672 VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)",
673 getpid (), rv, vppcom_retval_str (rv));
681 vppcom_session_unbind (u32 session_handle)
683 vcl_worker_t *wrk = vcl_worker_get_current ();
684 vcl_session_t *session = 0;
687 session = vcl_session_get_w_handle (wrk, session_handle);
689 return VPPCOM_EBADFD;
691 vpp_handle = session->vpp_handle;
692 vcl_session_table_del_listener (wrk, vpp_handle);
693 session->vpp_handle = ~0;
694 session->session_state = STATE_DISCONNECT;
696 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state"
697 " 0x%x (%s)", getpid (), vpp_handle, session_handle, STATE_DISCONNECT,
698 vppcom_session_state_str (STATE_DISCONNECT));
699 vcl_evt (VCL_EVT_UNBIND, session);
700 vppcom_send_unbind_sock (vpp_handle);
706 vppcom_session_disconnect (u32 session_handle)
708 vcl_worker_t *wrk = vcl_worker_get_current ();
709 svm_msg_q_t *vpp_evt_q;
710 vcl_session_t *session;
711 session_state_t state;
714 session = vcl_session_get_w_handle (wrk, session_handle);
716 return VPPCOM_EBADFD;
718 vpp_handle = session->vpp_handle;
719 state = session->session_state;
721 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (),
722 vpp_handle, session_handle, state, vppcom_session_state_str (state));
724 if (PREDICT_FALSE (state & STATE_LISTEN))
726 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
727 "Cannot disconnect a listen socket!",
728 getpid (), vpp_handle, session_handle);
729 return VPPCOM_EBADFD;
732 if (state & STATE_VPP_CLOSING)
734 vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
735 vcl_send_session_disconnected_reply (vpp_evt_q, wrk->my_client_index,
737 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect "
738 "REPLY...", getpid (), vpp_handle, session_handle);
742 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...",
743 getpid (), vpp_handle, session_handle);
744 vppcom_send_disconnect_session (vpp_handle);
751 vcl_cleanup_bapi (void)
753 socket_client_main_t *scm = &socket_client_main;
754 api_main_t *am = &api_main;
756 am->my_client_index = ~0;
757 am->my_registration = 0;
758 am->vl_input_queue = 0;
759 am->msg_index_by_name_and_crc = 0;
762 vl_client_api_unmap ();
766 vcl_cleanup_forked_child (vcl_worker_t * wrk, vcl_worker_t * child_wrk)
768 vcl_worker_t *sub_child;
771 if (child_wrk->forked_child != ~0)
773 sub_child = vcl_worker_get_if_valid (child_wrk->forked_child);
776 /* Wait a bit, maybe the process is going away */
777 while (kill (sub_child->current_pid, 0) >= 0 && tries++ < 50)
779 if (kill (sub_child->current_pid, 0) < 0)
780 vcl_cleanup_forked_child (child_wrk, sub_child);
783 vcl_worker_cleanup (child_wrk, 1 /* notify vpp */ );
784 VDBG (0, "Cleaned up wrk %u", child_wrk->wrk_index);
785 wrk->forked_child = ~0;
788 static struct sigaction old_sa;
791 vcl_intercept_sigchld_handler (int signum, siginfo_t * si, void *uc)
793 vcl_worker_t *wrk, *child_wrk;
795 if (vcl_get_worker_index () == ~0)
798 sigaction (SIGCHLD, &old_sa, 0);
800 wrk = vcl_worker_get_current ();
801 if (wrk->forked_child == ~0)
804 child_wrk = vcl_worker_get_if_valid (wrk->forked_child);
808 if (si && si->si_pid != child_wrk->current_pid)
810 VDBG (0, "unexpected child pid %u", si->si_pid);
813 vcl_cleanup_forked_child (wrk, child_wrk);
816 if (old_sa.sa_flags & SA_SIGINFO)
818 void (*fn) (int, siginfo_t *, void *) = old_sa.sa_sigaction;
823 void (*fn) (int) = old_sa.sa_handler;
830 vcl_incercept_sigchld ()
833 clib_memset (&sa, 0, sizeof (sa));
834 sa.sa_sigaction = vcl_intercept_sigchld_handler;
835 sa.sa_flags = SA_SIGINFO;
836 if (sigaction (SIGCHLD, &sa, &old_sa))
838 VERR ("couldn't intercept sigchld");
844 vcl_app_pre_fork (void)
846 vcl_incercept_sigchld ();
850 vcl_app_fork_child_handler (void)
852 int rv, parent_wrk_index;
853 vcl_worker_t *parent_wrk;
856 parent_wrk_index = vcl_get_worker_index ();
857 VDBG (0, "initializing forked child with parent wrk %u", parent_wrk_index);
862 vcl_set_worker_index (~0);
863 if (!vcl_worker_alloc_and_init ())
864 VERR ("couldn't allocate new worker");
867 * Attach to binary api
869 child_name = format (0, "%v-child-%u%c", vcm->app_name, getpid (), 0);
871 vppcom_api_hookup ();
872 vcm->app_state = STATE_APP_START;
873 rv = vppcom_connect_to_vpp ((char *) child_name);
874 vec_free (child_name);
877 VERR ("couldn't connect to VPP!");
882 * Register worker with vpp and share sessions
884 vcl_worker_register_with_vpp ();
885 parent_wrk = vcl_worker_get (parent_wrk_index);
886 vcl_worker_share_sessions (parent_wrk);
887 parent_wrk->forked_child = vcl_get_worker_index ();
889 VDBG (0, "forked child main worker initialized");
894 vcl_app_fork_parent_handler (void)
904 * Notify vpp of the disconnect and mark the worker as free. If we're the
905 * last worker, do a full cleanup otherwise, since we're probably a forked
906 * child, avoid syscalls as much as possible. We might've lost privileges.
909 vppcom_app_exit (void)
911 if (!pool_elts (vcm->workers))
913 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
914 vcl_set_worker_index (~0);
916 if (vec_len (vcm->workers) == 1)
917 vl_client_disconnect_from_vlib ();
919 vl_client_send_disconnect (1 /* vpp should cleanup */ );
923 * VPPCOM Public API functions
926 vppcom_app_create (char *app_name)
928 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
933 VDBG (1, "already initialized");
934 return VPPCOM_EEXIST;
938 vppcom_cfg (&vcm->cfg);
941 vcm->main_cpu = pthread_self ();
942 vcm->main_pid = getpid ();
943 vcm->app_name = format (0, "%s", app_name);
944 vppcom_init_error_string_table ();
945 svm_fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva,
946 20 /* timeout in secs */ );
947 pool_alloc (vcm->workers, vcl_cfg->max_workers);
948 clib_spinlock_init (&vcm->workers_lock);
949 clib_rwlock_init (&vcm->segment_table_lock);
950 pthread_atfork (vcl_app_pre_fork, vcl_app_fork_parent_handler,
951 vcl_app_fork_child_handler);
952 atexit (vppcom_app_exit);
954 /* Allocate default worker */
955 vcl_worker_alloc_and_init ();
957 /* API hookup and connect to VPP */
958 vppcom_api_hookup ();
960 vcm->app_state = STATE_APP_START;
961 rv = vppcom_connect_to_vpp (app_name);
964 VERR ("couldn't connect to VPP!");
967 VDBG (0, "sending session enable");
968 rv = vppcom_app_session_enable ();
971 VERR ("vppcom_app_session_enable() failed!");
975 VDBG (0, "sending app attach");
976 rv = vppcom_app_attach ();
979 VERR ("vppcom_app_attach() failed!");
983 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
984 vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
990 vppcom_app_destroy (void)
993 f64 orig_app_timeout;
995 if (!pool_elts (vcm->workers))
998 vcl_evt (VCL_EVT_DETACH, vcm);
1000 if (pool_elts (vcm->workers) == 1)
1002 vppcom_app_send_detach ();
1003 orig_app_timeout = vcm->cfg.app_timeout;
1004 vcm->cfg.app_timeout = 2.0;
1005 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
1006 vcm->cfg.app_timeout = orig_app_timeout;
1007 if (PREDICT_FALSE (rv))
1008 VDBG (0, "application detach timed out! returning %d (%s)", rv,
1009 vppcom_retval_str (rv));
1010 vec_free (vcm->app_name);
1011 vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ );
1015 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
1018 vcl_set_worker_index (~0);
1019 vcl_elog_stop (vcm);
1020 vl_client_disconnect_from_vlib ();
1024 vppcom_session_create (u8 proto, u8 is_nonblocking)
1026 vcl_worker_t *wrk = vcl_worker_get_current ();
1027 vcl_session_t *session;
1029 session = vcl_session_alloc (wrk);
1031 session->session_type = proto;
1032 session->session_state = STATE_START;
1033 session->vpp_handle = ~0;
1034 session->is_dgram = proto == VPPCOM_PROTO_UDP;
1037 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
1039 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
1040 is_nonblocking, session_index);
1042 VDBG (0, "created sid %u", session->session_index);
1044 return vcl_session_handle (session);
1048 vppcom_session_close (uint32_t session_handle)
1050 vcl_worker_t *wrk = vcl_worker_get_current ();
1051 u8 is_vep, do_disconnect = 1;
1052 vcl_session_t *session = 0;
1053 session_state_t state;
1054 u32 next_sh, vep_sh;
1058 session = vcl_session_get_w_handle (wrk, session_handle);
1060 return VPPCOM_EBADFD;
1062 if (session->shared_index != ~0)
1063 do_disconnect = vcl_worker_unshare_session (wrk, session);
1065 is_vep = session->is_vep;
1066 next_sh = session->vep.next_sh;
1067 vep_sh = session->vep.vep_sh;
1068 state = session->session_state;
1069 vpp_handle = session->vpp_handle;
1071 VDBG (1, "closing session handle %u vpp handle %u", session_handle,
1076 while (next_sh != ~0)
1078 rv = vppcom_epoll_ctl (session_handle, EPOLL_CTL_DEL, next_sh, 0);
1079 if (PREDICT_FALSE (rv < 0))
1080 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u"
1081 " failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
1082 vppcom_retval_str (rv));
1084 next_sh = session->vep.next_sh;
1089 if (session->is_vep_session)
1091 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, session_handle, 0);
1093 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u "
1094 "failed! rv %d (%s)", vpp_handle, session_handle, vep_sh,
1095 rv, vppcom_retval_str (rv));
1101 if (state & STATE_LISTEN)
1103 rv = vppcom_session_unbind (session_handle);
1104 if (PREDICT_FALSE (rv < 0))
1105 VDBG (0, "vpp handle 0x%llx, sid %u: listener unbind failed! "
1106 "rv %d (%s)", vpp_handle, session_handle, rv,
1107 vppcom_retval_str (rv));
1109 else if (state & STATE_OPEN)
1111 rv = vppcom_session_disconnect (session_handle);
1112 if (PREDICT_FALSE (rv < 0))
1113 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1114 "session disconnect failed! rv %d (%s)",
1115 getpid (), vpp_handle, session_handle,
1116 rv, vppcom_retval_str (rv));
1122 if (vcl_session_is_ct (session))
1124 vcl_cut_through_registration_t *ctr;
1127 mq_addr = pointer_to_uword (session->our_evt_q);
1128 ctr = vcl_ct_registration_lock_and_lookup (wrk, mq_addr);
1130 if (ctr->epoll_evt_conn_index != ~0)
1131 vcl_mq_epoll_del_evfd (wrk, ctr->epoll_evt_conn_index);
1132 VDBG (0, "Removing ct registration %u",
1133 vcl_ct_registration_index (wrk, ctr));
1134 vcl_ct_registration_del (wrk, ctr);
1135 vcl_ct_registration_lookup_del (wrk, mq_addr);
1136 vcl_ct_registration_unlock (wrk);
1139 if (vpp_handle != ~0)
1141 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
1143 vcl_session_free (wrk, session);
1145 VDBG (0, "session handle %u [0x%llx] removed", session_handle, vpp_handle);
1147 vcl_evt (VCL_EVT_CLOSE, session, rv);
1153 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1155 vcl_worker_t *wrk = vcl_worker_get_current ();
1156 vcl_session_t *session = 0;
1159 return VPPCOM_EINVAL;
1161 session = vcl_session_get_w_handle (wrk, session_handle);
1163 return VPPCOM_EBADFD;
1165 if (session->is_vep)
1167 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1168 "bind to an epoll session!", getpid (), session_handle);
1169 return VPPCOM_EBADFD;
1172 session->transport.is_ip4 = ep->is_ip4;
1174 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1175 sizeof (ip4_address_t));
1177 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1178 sizeof (ip6_address_t));
1179 session->transport.lcl_port = ep->port;
1181 VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
1182 "proto %s", getpid (), session_handle,
1183 session->transport.is_ip4 ? "IPv4" : "IPv6",
1184 format_ip46_address, &session->transport.lcl_ip,
1185 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1186 clib_net_to_host_u16 (session->transport.lcl_port),
1187 session->session_type ? "UDP" : "TCP");
1188 vcl_evt (VCL_EVT_BIND, session);
1190 if (session->session_type == VPPCOM_PROTO_UDP)
1191 vppcom_session_listen (session_handle, 10);
1197 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1199 vcl_worker_t *wrk = vcl_worker_get_current ();
1200 vcl_session_t *listen_session = 0;
1201 u64 listen_vpp_handle;
1204 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1205 if (!listen_session || listen_session->is_vep)
1206 return VPPCOM_EBADFD;
1208 if (q_len == 0 || q_len == ~0)
1209 q_len = vcm->cfg.listen_queue_size;
1211 listen_vpp_handle = listen_session->vpp_handle;
1212 if (listen_session->session_state & STATE_LISTEN)
1214 VDBG (0, "session %u [0x%llx]: already in listen state!",
1215 listen_sh, listen_vpp_handle);
1219 VDBG (0, "session %u [0x%llx]: sending vpp listen request...",
1220 listen_sh, listen_vpp_handle);
1223 * Send listen request to vpp and wait for reply
1225 vppcom_send_bind_sock (listen_session);
1226 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1228 vcm->cfg.session_timeout);
1230 if (PREDICT_FALSE (rv))
1232 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1233 VDBG (0, "session %u [0x%llx]: listen failed! returning %d (%s)",
1234 listen_sh, listen_session->vpp_handle, rv,
1235 vppcom_retval_str (rv));
1243 validate_args_session_accept_ (vcl_worker_t * wrk,
1244 vcl_session_t * listen_session)
1246 /* Input validation - expects spinlock on sessions_lockp */
1247 if (listen_session->is_vep)
1249 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1250 "epoll session!", getpid (),
1251 listen_session->session_index);
1252 return VPPCOM_EBADFD;
1255 if (listen_session->session_state != STATE_LISTEN)
1257 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1258 "not in listen state! state 0x%x (%s)", getpid (),
1259 listen_session->vpp_handle, listen_session->session_index,
1260 listen_session->session_state,
1261 vppcom_session_state_str (listen_session->session_state));
1262 return VPPCOM_EBADFD;
1268 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1271 u32 client_session_index = ~0, listen_session_index, accept_flags = 0;
1272 vcl_worker_t *wrk = vcl_worker_get_current ();
1273 session_accepted_msg_t accepted_msg;
1274 vcl_session_t *listen_session = 0;
1275 vcl_session_t *client_session = 0;
1276 svm_msg_q_t *vpp_evt_q;
1277 vcl_session_msg_t *evt;
1278 u64 listen_vpp_handle;
1279 svm_msg_q_msg_t msg;
1284 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1285 if (!listen_session)
1286 return VPPCOM_EBADFD;
1288 listen_session_index = listen_session->session_index;
1289 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1292 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1294 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1295 accept_flags = evt->flags;
1296 accepted_msg = evt->accepted_msg;
1300 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1301 VCL_SESS_ATTR_NONBLOCK);
1302 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1303 return VPPCOM_EAGAIN;
1307 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1308 return VPPCOM_EAGAIN;
1310 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1311 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1313 clib_warning ("discarded event: %u", e->event_type);
1314 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1317 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1318 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1324 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1325 listen_session = vcl_session_get (wrk, listen_session_index);
1326 client_session = vcl_session_get (wrk, client_session_index);
1328 if (flags & O_NONBLOCK)
1329 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1331 listen_vpp_handle = listen_session->vpp_handle;
1332 VDBG (1, "vpp handle 0x%llx, sid %u: Got a client request! "
1333 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1334 listen_vpp_handle, listen_session_handle,
1335 client_session->vpp_handle, client_session_index,
1336 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1337 VCL_SESS_ATTR_NONBLOCK));
1341 ep->is_ip4 = client_session->transport.is_ip4;
1342 ep->port = client_session->transport.rmt_port;
1343 if (client_session->transport.is_ip4)
1344 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1345 sizeof (ip4_address_t));
1347 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1348 sizeof (ip6_address_t));
1351 if (accepted_msg.server_event_queue_address)
1352 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1355 vpp_evt_q = client_session->vpp_evt_q;
1357 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1358 client_session->vpp_handle, 0);
1360 VDBG (0, "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u "
1361 "local: %U:%u", listen_session_handle, listen_vpp_handle,
1362 client_session_index, client_session->vpp_handle,
1363 format_ip46_address, &client_session->transport.rmt_ip,
1364 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1365 clib_net_to_host_u16 (client_session->transport.rmt_port),
1366 format_ip46_address, &client_session->transport.lcl_ip,
1367 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1368 clib_net_to_host_u16 (client_session->transport.lcl_port));
1369 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1370 client_session_index);
1373 * Session might have been closed already
1377 svm_msg_q_t *mq = vcl_session_vpp_evt_q (wrk, client_session);
1378 if (accept_flags & VCL_ACCEPTED_F_CLOSED)
1380 client_session->session_state = STATE_DISCONNECT;
1381 vcl_send_session_disconnected_reply (mq, wrk->my_client_index,
1382 client_session->vpp_handle, 0);
1384 else if (accept_flags & VCL_ACCEPTED_F_RESET)
1386 client_session->session_state = STATE_DISCONNECT;
1387 vcl_send_session_reset_reply (mq, wrk->my_client_index,
1388 client_session->vpp_handle, 0);
1391 return vcl_session_handle (client_session);
1395 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1397 vcl_worker_t *wrk = vcl_worker_get_current ();
1398 vcl_session_t *session = 0;
1402 session = vcl_session_get_w_handle (wrk, session_handle);
1404 return VPPCOM_EBADFD;
1405 session_index = session->session_index;
1407 if (PREDICT_FALSE (session->is_vep))
1409 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1410 "connect on an epoll session!", getpid (),
1412 return VPPCOM_EBADFD;
1415 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1417 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
1418 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1419 getpid (), session->vpp_handle, session_handle,
1420 session->transport.is_ip4 ? "IPv4" : "IPv6",
1421 format_ip46_address,
1422 &session->transport.rmt_ip, session->transport.is_ip4 ?
1423 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1424 clib_net_to_host_u16 (session->transport.rmt_port),
1425 session->session_type ? "UDP" : "TCP", session->session_state,
1426 vppcom_session_state_str (session->session_state));
1430 session->transport.is_ip4 = server_ep->is_ip4;
1431 if (session->transport.is_ip4)
1432 clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
1433 sizeof (ip4_address_t));
1435 clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
1436 sizeof (ip6_address_t));
1437 session->transport.rmt_port = server_ep->port;
1439 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
1441 getpid (), session->vpp_handle, session_handle,
1442 session->transport.is_ip4 ? "IPv4" : "IPv6",
1443 format_ip46_address,
1444 &session->transport.rmt_ip, session->transport.is_ip4 ?
1445 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1446 clib_net_to_host_u16 (session->transport.rmt_port),
1447 session->session_type ? "UDP" : "TCP");
1450 * Send connect request and wait for reply from vpp
1452 vppcom_send_connect_sock (session);
1453 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1454 vcm->cfg.session_timeout);
1456 session = vcl_session_get (wrk, session_index);
1458 if (PREDICT_FALSE (rv))
1460 if (VPPCOM_DEBUG > 0)
1463 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1464 "failed! returning %d (%s)", getpid (),
1465 session->vpp_handle, session_handle, rv,
1466 vppcom_retval_str (rv));
1468 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1469 "returning %d (%s)", getpid (),
1470 session_handle, rv, vppcom_retval_str (rv));
1474 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1475 getpid (), session->vpp_handle, session_handle);
1481 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1484 return (e->event_type == FIFO_EVENT_APP_RX
1485 && e->fifo->client_session_index == sid);
1487 return (e->event_type == SESSION_IO_EVT_CT_TX);
1491 vcl_session_is_readable (vcl_session_t * s)
1493 return ((s->session_state & STATE_OPEN)
1494 || (s->session_state == STATE_LISTEN
1495 && s->session_type == VPPCOM_PROTO_UDP));
1499 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1502 vcl_worker_t *wrk = vcl_worker_get_current ();
1503 int n_read = 0, rv, is_nonblocking;
1504 vcl_session_t *s = 0;
1505 svm_fifo_t *rx_fifo;
1506 svm_msg_q_msg_t msg;
1511 if (PREDICT_FALSE (!buf))
1512 return VPPCOM_EINVAL;
1514 s = vcl_session_get_w_handle (wrk, session_handle);
1515 if (PREDICT_FALSE (!s || s->is_vep))
1516 return VPPCOM_EBADFD;
1518 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1520 session_state_t state = s->session_state;
1521 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1523 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! "
1524 "state 0x%x (%s), returning %d (%s)",
1525 getpid (), s->vpp_handle, session_handle, state,
1526 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1530 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1531 is_ct = vcl_session_is_ct (s);
1532 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1533 rx_fifo = s->rx_fifo;
1536 if (svm_fifo_is_empty (rx_fifo))
1540 svm_fifo_unset_event (rx_fifo);
1541 return VPPCOM_EWOULDBLOCK;
1543 while (svm_fifo_is_empty (rx_fifo))
1545 svm_fifo_unset_event (rx_fifo);
1546 svm_msg_q_lock (mq);
1547 if (svm_msg_q_is_empty (mq))
1548 svm_msg_q_wait (mq);
1550 svm_msg_q_sub_w_lock (mq, &msg);
1551 e = svm_msg_q_msg_data (mq, &msg);
1552 svm_msg_q_unlock (mq);
1553 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1555 vcl_handle_mq_event (wrk, e);
1556 svm_msg_q_free_msg (mq, &msg);
1559 svm_msg_q_free_msg (mq, &msg);
1561 if (PREDICT_FALSE (s->session_state == STATE_VPP_CLOSING))
1567 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1569 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1571 if (svm_fifo_is_empty (rx_fifo))
1572 svm_fifo_unset_event (rx_fifo);
1574 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1576 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1577 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1581 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1582 getpid (), s->vpp_handle, session_handle, n_read, rx_fifo);
1588 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1590 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1594 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1596 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1600 vppcom_session_read_segments (uint32_t session_handle,
1601 vppcom_data_segments_t ds)
1603 vcl_worker_t *wrk = vcl_worker_get_current ();
1604 int n_read = 0, rv, is_nonblocking;
1605 vcl_session_t *s = 0;
1606 svm_fifo_t *rx_fifo;
1607 svm_msg_q_msg_t msg;
1612 s = vcl_session_get_w_handle (wrk, session_handle);
1613 if (PREDICT_FALSE (!s || s->is_vep))
1614 return VPPCOM_EBADFD;
1616 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1618 session_state_t state = s->session_state;
1619 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1623 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1624 is_ct = vcl_session_is_ct (s);
1625 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1626 rx_fifo = s->rx_fifo;
1629 if (svm_fifo_is_empty (rx_fifo))
1633 svm_fifo_unset_event (rx_fifo);
1634 return VPPCOM_EWOULDBLOCK;
1636 while (svm_fifo_is_empty (rx_fifo))
1638 svm_fifo_unset_event (rx_fifo);
1639 svm_msg_q_lock (mq);
1640 if (svm_msg_q_is_empty (mq))
1641 svm_msg_q_wait (mq);
1643 svm_msg_q_sub_w_lock (mq, &msg);
1644 e = svm_msg_q_msg_data (mq, &msg);
1645 svm_msg_q_unlock (mq);
1646 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1648 vcl_handle_mq_event (wrk, e);
1649 svm_msg_q_free_msg (mq, &msg);
1652 svm_msg_q_free_msg (mq, &msg);
1654 if (PREDICT_FALSE (s->session_state == STATE_VPP_CLOSING))
1659 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1660 svm_fifo_unset_event (rx_fifo);
1662 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1664 /* If the peer is not polling send notification */
1665 if (!svm_fifo_has_event (s->rx_fifo))
1666 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1667 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1674 vppcom_session_free_segments (uint32_t session_handle,
1675 vppcom_data_segments_t ds)
1677 vcl_worker_t *wrk = vcl_worker_get_current ();
1680 s = vcl_session_get_w_handle (wrk, session_handle);
1681 if (PREDICT_FALSE (!s || s->is_vep))
1684 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1688 vppcom_session_read_ready (vcl_session_t * session)
1690 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1691 if (PREDICT_FALSE (session->is_vep))
1693 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1694 "epoll session!", getpid (), session->session_index);
1695 return VPPCOM_EBADFD;
1698 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1700 session_state_t state = session->session_state;
1703 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1705 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1706 " state 0x%x (%s), returning %d (%s)", getpid (),
1707 session->vpp_handle, session->session_index, state,
1708 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1712 if (session->session_state & STATE_LISTEN)
1713 return clib_fifo_elts (session->accept_evts_fifo);
1715 return svm_fifo_max_dequeue (session->rx_fifo);
1719 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1721 u32 first_copy = clib_min (ds[0].len, max_bytes);
1722 clib_memcpy_fast (buf, ds[0].data, first_copy);
1723 if (first_copy < max_bytes)
1725 clib_memcpy_fast (buf + first_copy, ds[1].data,
1726 clib_min (ds[1].len, max_bytes - first_copy));
1732 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1735 return (e->event_type == FIFO_EVENT_APP_TX
1736 && e->fifo->client_session_index == sid);
1738 return (e->event_type == SESSION_IO_EVT_CT_RX);
1742 vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
1745 vcl_worker_t *wrk = vcl_worker_get_current ();
1746 int rv, n_write, is_nonblocking;
1747 vcl_session_t *s = 0;
1748 svm_fifo_t *tx_fifo = 0;
1749 session_evt_type_t et;
1750 svm_msg_q_msg_t msg;
1755 if (PREDICT_FALSE (!buf))
1756 return VPPCOM_EINVAL;
1758 s = vcl_session_get_w_handle (wrk, session_handle);
1759 if (PREDICT_FALSE (!s))
1760 return VPPCOM_EBADFD;
1762 if (PREDICT_FALSE (s->is_vep))
1764 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1765 "cannot write to an epoll session!",
1766 getpid (), s->vpp_handle, session_handle);
1768 return VPPCOM_EBADFD;
1771 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1773 session_state_t state = s->session_state;
1774 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1775 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1776 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1777 state, vppcom_session_state_str (state));
1781 tx_fifo = s->tx_fifo;
1782 is_ct = vcl_session_is_ct (s);
1783 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1784 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1785 if (svm_fifo_is_full (tx_fifo))
1789 return VPPCOM_EWOULDBLOCK;
1791 while (svm_fifo_is_full (tx_fifo))
1793 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1794 svm_msg_q_lock (mq);
1795 if (svm_msg_q_is_empty (mq))
1796 svm_msg_q_wait (mq);
1798 svm_msg_q_sub_w_lock (mq, &msg);
1799 e = svm_msg_q_msg_data (mq, &msg);
1800 svm_msg_q_unlock (mq);
1802 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1803 vcl_handle_mq_event (wrk, e);
1804 svm_msg_q_free_msg (mq, &msg);
1808 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1809 return VPPCOM_ECONNRESET;
1811 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1812 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1813 if (is_flush && !vcl_session_is_ct (s))
1814 et = SESSION_IO_EVT_TX_FLUSH;
1817 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1818 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1820 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1823 ASSERT (n_write > 0);
1825 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1826 s->vpp_handle, session_handle, n_write);
1832 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1834 return vppcom_session_write_inline (session_handle, buf, n,
1838 static vcl_session_t *
1839 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1842 s = vcl_session_get (wrk, f->client_session_index);
1846 if (type == 0 && s->rx_fifo == f)
1849 if (type == 1 && s->tx_fifo == f)
1852 s = vcl_session_get (wrk, f->master_session_index);
1855 if (type == 0 && s->rx_fifo == f)
1857 if (type == 1 && s->tx_fifo == f)
1864 vppcom_session_write_ready (vcl_session_t * session)
1866 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1867 if (PREDICT_FALSE (session->is_vep))
1869 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1870 "cannot write to an epoll session!",
1871 getpid (), session->vpp_handle, session->session_index);
1872 return VPPCOM_EBADFD;
1875 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1877 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1878 "cannot write to a listen session!",
1879 getpid (), session->vpp_handle, session->session_index);
1880 return VPPCOM_EBADFD;
1883 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1885 session_state_t state = session->session_state;
1888 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1889 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1890 "session is not open! state 0x%x (%s), "
1891 "returning %d (%s)", getpid (), session->vpp_handle,
1892 session->session_index,
1893 state, vppcom_session_state_str (state),
1894 rv, vppcom_retval_str (rv));
1898 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1899 getpid (), session->vpp_handle, session->session_index,
1900 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1902 return svm_fifo_max_enqueue (session->tx_fifo);
1906 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1908 svm_msg_q_msg_t *msg;
1912 n_msgs = svm_msg_q_size (mq);
1913 for (i = 0; i < n_msgs; i++)
1915 vec_add2 (wrk->mq_msg_vector, msg, 1);
1916 svm_msg_q_sub_w_lock (mq, msg);
1921 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1922 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1924 svm_fifo_unset_event (_fifo); \
1925 if (svm_fifo_is_empty (_fifo)) \
1930 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1931 unsigned long n_bits, unsigned long *read_map,
1932 unsigned long *write_map,
1933 unsigned long *except_map, u32 * bits_set)
1935 session_disconnected_msg_t *disconnected_msg;
1936 session_connected_msg_t *connected_msg;
1937 vcl_session_t *session;
1940 switch (e->event_type)
1942 case FIFO_EVENT_APP_RX:
1943 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1944 sid = e->fifo->client_session_index;
1945 session = vcl_session_get (wrk, sid);
1948 if (sid < n_bits && read_map)
1950 clib_bitmap_set_no_check (read_map, sid, 1);
1954 case FIFO_EVENT_APP_TX:
1955 sid = e->fifo->client_session_index;
1956 session = vcl_session_get (wrk, sid);
1959 if (sid < n_bits && write_map)
1961 clib_bitmap_set_no_check (write_map, sid, 1);
1965 case SESSION_IO_EVT_CT_TX:
1966 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1967 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
1970 sid = session->session_index;
1971 if (sid < n_bits && read_map)
1973 clib_bitmap_set_no_check (read_map, sid, 1);
1977 case SESSION_IO_EVT_CT_RX:
1978 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
1981 sid = session->session_index;
1982 if (sid < n_bits && write_map)
1984 clib_bitmap_set_no_check (write_map, sid, 1);
1988 case SESSION_CTRL_EVT_ACCEPTED:
1989 session = vcl_session_accepted (wrk,
1990 (session_accepted_msg_t *) e->data);
1993 sid = session->session_index;
1994 if (sid < n_bits && read_map)
1996 clib_bitmap_set_no_check (read_map, sid, 1);
2000 case SESSION_CTRL_EVT_CONNECTED:
2001 connected_msg = (session_connected_msg_t *) e->data;
2002 vcl_session_connected_handler (wrk, connected_msg);
2004 case SESSION_CTRL_EVT_DISCONNECTED:
2005 disconnected_msg = (session_disconnected_msg_t *) e->data;
2006 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2009 sid = session->session_index;
2010 if (sid < n_bits && except_map)
2012 clib_bitmap_set_no_check (except_map, sid, 1);
2016 case SESSION_CTRL_EVT_RESET:
2017 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2018 if (sid < n_bits && except_map)
2020 clib_bitmap_set_no_check (except_map, sid, 1);
2025 clib_warning ("unhandled: %u", e->event_type);
2031 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2032 unsigned long n_bits, unsigned long *read_map,
2033 unsigned long *write_map, unsigned long *except_map,
2034 double time_to_wait, u32 * bits_set)
2036 svm_msg_q_msg_t *msg;
2040 svm_msg_q_lock (mq);
2041 if (svm_msg_q_is_empty (mq))
2045 svm_msg_q_unlock (mq);
2051 svm_msg_q_unlock (mq);
2054 else if (time_to_wait < 0)
2056 svm_msg_q_wait (mq);
2060 if (svm_msg_q_timedwait (mq, time_to_wait))
2062 svm_msg_q_unlock (mq);
2067 vcl_mq_dequeue_batch (wrk, mq);
2068 svm_msg_q_unlock (mq);
2070 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2072 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2073 e = svm_msg_q_msg_data (mq, msg);
2074 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
2075 except_map, bits_set);
2076 svm_msg_q_free_msg (mq, msg);
2078 vec_reset_length (wrk->mq_msg_vector);
2083 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
2084 unsigned long *read_map, unsigned long *write_map,
2085 unsigned long *except_map, double time_to_wait,
2088 double total_wait = 0, wait_slice;
2089 vcl_cut_through_registration_t *cr;
2091 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
2092 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
2095 vcl_ct_registration_lock (wrk);
2097 pool_foreach (cr, wrk->cut_through_registrations, ({
2098 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
2102 vcl_ct_registration_unlock (wrk);
2104 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2105 write_map, except_map, time_to_wait, bits_set);
2106 total_wait += wait_slice;
2110 while (total_wait < time_to_wait);
2116 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
2117 unsigned long *read_map, unsigned long *write_map,
2118 unsigned long *except_map, double time_to_wait,
2121 vcl_mq_evt_conn_t *mqc;
2122 int __clib_unused n_read;
2126 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2127 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2128 vec_len (wrk->mq_events), time_to_wait);
2129 for (i = 0; i < n_mq_evts; i++)
2131 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2132 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2133 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2134 except_map, 0, bits_set);
2137 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2141 vppcom_select (unsigned long n_bits, unsigned long *read_map,
2142 unsigned long *write_map, unsigned long *except_map,
2143 double time_to_wait)
2145 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2146 vcl_worker_t *wrk = vcl_worker_get_current ();
2147 vcl_session_t *session = 0;
2150 ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
2152 if (n_bits && read_map)
2154 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2155 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2156 vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2157 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2159 if (n_bits && write_map)
2161 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2162 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2163 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2164 memset (write_map, 0,
2165 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2167 if (n_bits && except_map)
2169 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2170 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2171 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2172 memset (except_map, 0,
2173 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2183 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2184 if (!(session = vcl_session_get (wrk, sid)))
2186 if (except_map && sid < minbits)
2187 clib_bitmap_set_no_check (except_map, sid, 1);
2191 rv = svm_fifo_is_full (session->tx_fifo);
2194 clib_bitmap_set_no_check (write_map, sid, 1);
2203 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2204 if (!(session = vcl_session_get (wrk, sid)))
2206 if (except_map && sid < minbits)
2207 clib_bitmap_set_no_check (except_map, sid, 1);
2211 rv = vppcom_session_read_ready (session);
2214 clib_bitmap_set_no_check (read_map, sid, 1);
2222 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2224 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2225 read_map, write_map, except_map, &bits_set);
2227 vec_reset_length (wrk->unhandled_evts_vector);
2229 if (vcm->cfg.use_mq_eventfd)
2230 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2231 time_to_wait, &bits_set);
2233 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2234 time_to_wait, &bits_set);
2240 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2242 vcl_session_t *session;
2243 vppcom_epoll_t *vep;
2246 if (VPPCOM_DEBUG <= 1)
2249 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2250 session = vcl_session_get (wrk, vep_idx);
2251 if (PREDICT_FALSE (!session))
2253 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2254 getpid (), vep_idx);
2257 if (PREDICT_FALSE (!session->is_vep))
2259 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2260 getpid (), vep_idx);
2263 vep = &session->vep;
2264 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2267 " is_vep_session = %u\n"
2268 " next_sid = 0x%x (%u)\n"
2269 " wait_cont_idx = 0x%x (%u)\n"
2270 "}\n", getpid (), vep_idx,
2271 session->is_vep, session->is_vep_session,
2272 vep->next_sh, vep->next_sh,
2273 session->wait_cont_idx, session->wait_cont_idx);
2275 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2277 session = vcl_session_get (wrk, sid);
2278 if (PREDICT_FALSE (!session))
2280 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2283 if (PREDICT_FALSE (session->is_vep))
2284 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2285 getpid (), vep_idx);
2286 else if (PREDICT_FALSE (!session->is_vep_session))
2288 clib_warning ("VCL<%d>: ERROR: session (%u) "
2289 "is not a vep session!", getpid (), sid);
2292 vep = &session->vep;
2293 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2294 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2295 "vep_idx (%u)!", getpid (),
2296 sid, session->vep.vep_sh, vep_idx);
2297 if (session->is_vep_session)
2299 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2301 " next_sid = 0x%x (%u)\n"
2302 " prev_sid = 0x%x (%u)\n"
2303 " vep_idx = 0x%x (%u)\n"
2304 " ev.events = 0x%x\n"
2305 " ev.data.u64 = 0x%llx\n"
2309 vep->next_sh, vep->next_sh,
2310 vep->prev_sh, vep->prev_sh,
2311 vep->vep_sh, vep->vep_sh,
2312 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2317 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2318 getpid (), vep_idx);
2322 vppcom_epoll_create (void)
2324 vcl_worker_t *wrk = vcl_worker_get_current ();
2325 vcl_session_t *vep_session;
2327 vep_session = vcl_session_alloc (wrk);
2329 vep_session->is_vep = 1;
2330 vep_session->vep.vep_sh = ~0;
2331 vep_session->vep.next_sh = ~0;
2332 vep_session->vep.prev_sh = ~0;
2333 vep_session->wait_cont_idx = ~0;
2334 vep_session->vpp_handle = ~0;
2336 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_sh);
2337 VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!",
2338 getpid (), vep_session->session_index, vep_session->session_index);
2340 return vcl_session_handle (vep_session);
2344 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2345 struct epoll_event *event)
2347 vcl_worker_t *wrk = vcl_worker_get_current ();
2348 vcl_session_t *vep_session;
2349 vcl_session_t *session;
2352 if (vep_handle == session_handle)
2354 clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!",
2355 getpid (), vep_handle);
2356 return VPPCOM_EINVAL;
2359 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2360 if (PREDICT_FALSE (!vep_session))
2362 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_handle);
2363 return VPPCOM_EBADFD;
2365 if (PREDICT_FALSE (!vep_session->is_vep))
2367 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2368 getpid (), vep_handle);
2369 return VPPCOM_EINVAL;
2372 ASSERT (vep_session->vep.vep_sh == ~0);
2373 ASSERT (vep_session->vep.prev_sh == ~0);
2375 session = vcl_session_get_w_handle (wrk, session_handle);
2376 if (PREDICT_FALSE (!session))
2378 VDBG (0, "VCL<%d>: ERROR: Invalid session_handle (%u)!",
2379 getpid (), session_handle);
2380 return VPPCOM_EBADFD;
2382 if (PREDICT_FALSE (session->is_vep))
2384 clib_warning ("ERROR: session_handle (%u) is a vep!", vep_handle);
2385 return VPPCOM_EINVAL;
2391 if (PREDICT_FALSE (!event))
2393 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to "
2394 "epoll_event structure!", getpid ());
2395 return VPPCOM_EINVAL;
2397 if (vep_session->vep.next_sh != ~0)
2399 vcl_session_t *next_session;
2400 next_session = vcl_session_get_w_handle (wrk,
2401 vep_session->vep.next_sh);
2402 if (PREDICT_FALSE (!next_session))
2404 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid "
2405 "vep.next_sid (%u) on vep_idx (%u)!",
2406 getpid (), vep_session->vep.next_sh, vep_handle);
2407 return VPPCOM_EBADFD;
2409 ASSERT (next_session->vep.prev_sh == vep_handle);
2410 next_session->vep.prev_sh = session_handle;
2412 session->vep.next_sh = vep_session->vep.next_sh;
2413 session->vep.prev_sh = vep_handle;
2414 session->vep.vep_sh = vep_handle;
2415 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2416 session->vep.ev = *event;
2417 session->is_vep = 0;
2418 session->is_vep_session = 1;
2419 vep_session->vep.next_sh = session_handle;
2421 VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x, "
2422 "data 0x%llx!", getpid (), vep_handle, session_handle,
2423 event->events, event->data.u64);
2424 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2428 if (PREDICT_FALSE (!event))
2430 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to "
2431 "epoll_event structure!", getpid ());
2435 else if (PREDICT_FALSE (!session->is_vep_session))
2437 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2438 "not a vep session!", getpid (), session_handle);
2442 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2444 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2445 "vep_idx (%u) != vep_idx (%u)!",
2446 getpid (), session_handle,
2447 session->vep.vep_sh, vep_handle);
2451 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2452 session->vep.ev = *event;
2453 VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
2454 " data 0x%llx!", getpid (), vep_handle, session_handle,
2455 event->events, event->data.u64);
2459 if (PREDICT_FALSE (!session->is_vep_session))
2461 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2462 "not a vep session!", getpid (), session_handle);
2466 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2468 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2469 "vep_idx (%u) != vep_idx (%u)!",
2470 getpid (), session_handle,
2471 session->vep.vep_sh, vep_handle);
2476 vep_session->wait_cont_idx =
2477 (vep_session->wait_cont_idx == session_handle) ?
2478 session->vep.next_sh : vep_session->wait_cont_idx;
2480 if (session->vep.prev_sh == vep_handle)
2481 vep_session->vep.next_sh = session->vep.next_sh;
2484 vcl_session_t *prev_session;
2485 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2486 if (PREDICT_FALSE (!prev_session))
2488 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2489 "vep.prev_sid (%u) on sid (%u)!",
2490 getpid (), session->vep.prev_sh, session_handle);
2491 return VPPCOM_EBADFD;
2493 ASSERT (prev_session->vep.next_sh == session_handle);
2494 prev_session->vep.next_sh = session->vep.next_sh;
2496 if (session->vep.next_sh != ~0)
2498 vcl_session_t *next_session;
2499 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2500 if (PREDICT_FALSE (!next_session))
2502 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2503 "vep.next_sid (%u) on sid (%u)!",
2504 getpid (), session->vep.next_sh, session_handle);
2505 return VPPCOM_EBADFD;
2507 ASSERT (next_session->vep.prev_sh == session_handle);
2508 next_session->vep.prev_sh = session->vep.prev_sh;
2511 memset (&session->vep, 0, sizeof (session->vep));
2512 session->vep.next_sh = ~0;
2513 session->vep.prev_sh = ~0;
2514 session->vep.vep_sh = ~0;
2515 session->is_vep_session = 0;
2516 VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!",
2517 getpid (), vep_handle, session_handle);
2518 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2522 clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op);
2526 vep_verify_epoll_chain (wrk, vep_handle);
2533 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2534 struct epoll_event *events, u32 * num_ev)
2536 session_disconnected_msg_t *disconnected_msg;
2537 session_connected_msg_t *connected_msg;
2538 u32 sid = ~0, session_events;
2539 u64 session_evt_data = ~0;
2540 vcl_session_t *session;
2543 switch (e->event_type)
2545 case FIFO_EVENT_APP_RX:
2546 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2547 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2548 sid = e->fifo->client_session_index;
2549 session = vcl_session_get (wrk, sid);
2550 session_events = session->vep.ev.events;
2551 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2554 events[*num_ev].events |= EPOLLIN;
2555 session_evt_data = session->vep.ev.data.u64;
2556 session->has_rx_evt = 1;
2558 case FIFO_EVENT_APP_TX:
2559 sid = e->fifo->client_session_index;
2560 session = vcl_session_get (wrk, sid);
2561 session_events = session->vep.ev.events;
2562 if (!(EPOLLOUT & session_events))
2565 events[*num_ev].events |= EPOLLOUT;
2566 session_evt_data = session->vep.ev.data.u64;
2568 case SESSION_IO_EVT_CT_TX:
2569 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2570 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2571 sid = session->session_index;
2572 session_events = session->vep.ev.events;
2573 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2576 events[*num_ev].events |= EPOLLIN;
2577 session_evt_data = session->vep.ev.data.u64;
2578 session->has_rx_evt = 1;
2580 case SESSION_IO_EVT_CT_RX:
2581 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2582 sid = session->session_index;
2583 session_events = session->vep.ev.events;
2584 if (!(EPOLLOUT & session_events))
2587 events[*num_ev].events |= EPOLLOUT;
2588 session_evt_data = session->vep.ev.data.u64;
2590 case SESSION_CTRL_EVT_ACCEPTED:
2591 session = vcl_session_accepted (wrk,
2592 (session_accepted_msg_t *) e->data);
2596 session_events = session->vep.ev.events;
2597 if (!(EPOLLIN & session_events))
2601 events[*num_ev].events |= EPOLLIN;
2602 session_evt_data = session->vep.ev.data.u64;
2604 case SESSION_CTRL_EVT_CONNECTED:
2605 connected_msg = (session_connected_msg_t *) e->data;
2606 vcl_session_connected_handler (wrk, connected_msg);
2607 /* Generate EPOLLOUT because there's no connected event */
2608 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2609 session = vcl_session_get (wrk, sid);
2610 session_events = session->vep.ev.events;
2611 if (EPOLLOUT & session_events)
2614 events[*num_ev].events |= EPOLLOUT;
2615 session_evt_data = session->vep.ev.data.u64;
2618 case SESSION_CTRL_EVT_DISCONNECTED:
2619 disconnected_msg = (session_disconnected_msg_t *) e->data;
2620 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2624 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2625 session_evt_data = session->vep.ev.data.u64;
2626 session_events = session->vep.ev.events;
2628 case SESSION_CTRL_EVT_RESET:
2629 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2630 if (!(session = vcl_session_get (wrk, sid)))
2633 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2634 session_evt_data = session->vep.ev.data.u64;
2635 session_events = session->vep.ev.events;
2638 VDBG (0, "unhandled: %u", e->event_type);
2644 events[*num_ev].data.u64 = session_evt_data;
2645 if (EPOLLONESHOT & session_events)
2647 session = vcl_session_get (wrk, sid);
2648 session->vep.ev.events = 0;
2655 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2656 struct epoll_event *events, u32 maxevents,
2657 double wait_for_time, u32 * num_ev)
2659 svm_msg_q_msg_t *msg;
2663 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2664 goto handle_dequeued;
2666 svm_msg_q_lock (mq);
2667 if (svm_msg_q_is_empty (mq))
2671 svm_msg_q_unlock (mq);
2674 else if (wait_for_time < 0)
2676 svm_msg_q_wait (mq);
2680 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2682 svm_msg_q_unlock (mq);
2687 vcl_mq_dequeue_batch (wrk, mq);
2688 svm_msg_q_unlock (mq);
2691 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2693 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2694 e = svm_msg_q_msg_data (mq, msg);
2695 if (*num_ev < maxevents)
2696 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2698 vec_add1 (wrk->unhandled_evts_vector, *e);
2699 svm_msg_q_free_msg (mq, msg);
2701 vec_reset_length (wrk->mq_msg_vector);
2707 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2708 int maxevents, u32 n_evts, double wait_for_time)
2710 vcl_cut_through_registration_t *cr;
2711 double total_wait = 0, wait_slice;
2714 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2715 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2719 vcl_ct_registration_lock (wrk);
2721 pool_foreach (cr, wrk->cut_through_registrations, ({
2722 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2725 vcl_ct_registration_unlock (wrk);
2727 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2728 maxevents, n_evts ? 0 : wait_slice,
2731 total_wait += wait_slice;
2735 while (total_wait < wait_for_time);
2740 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2741 int maxevents, u32 n_evts, double wait_for_time)
2743 vcl_mq_evt_conn_t *mqc;
2744 int __clib_unused n_read;
2748 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2750 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2751 vec_len (wrk->mq_events), wait_for_time);
2752 for (i = 0; i < n_mq_evts; i++)
2754 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2755 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2756 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2758 if (!n_evts && n_mq_evts > 0)
2761 return (int) n_evts;
2765 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2766 int maxevents, double wait_for_time)
2768 vcl_worker_t *wrk = vcl_worker_get_current ();
2769 vcl_session_t *vep_session;
2773 if (PREDICT_FALSE (maxevents <= 0))
2775 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2776 getpid (), maxevents);
2777 return VPPCOM_EINVAL;
2780 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2782 return VPPCOM_EBADFD;
2784 if (PREDICT_FALSE (!vep_session->is_vep))
2786 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2787 getpid (), vep_handle);
2788 return VPPCOM_EINVAL;
2791 memset (events, 0, sizeof (*events) * maxevents);
2793 if (vec_len (wrk->unhandled_evts_vector))
2795 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2797 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2799 if (n_evts == maxevents)
2806 vec_delete (wrk->unhandled_evts_vector, i, 0);
2809 if (vcm->cfg.use_mq_eventfd)
2810 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2813 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2818 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2819 void *buffer, uint32_t * buflen)
2821 vcl_worker_t *wrk = vcl_worker_get_current ();
2822 vcl_session_t *session;
2824 u32 *flags = buffer;
2825 vppcom_endpt_t *ep = buffer;
2827 session = vcl_session_get_w_handle (wrk, session_handle);
2829 return VPPCOM_EBADFD;
2833 case VPPCOM_ATTR_GET_NREAD:
2834 rv = vppcom_session_read_ready (session);
2835 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2839 case VPPCOM_ATTR_GET_NWRITE:
2840 rv = vppcom_session_write_ready (session);
2841 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2842 getpid (), session_handle, rv);
2845 case VPPCOM_ATTR_GET_FLAGS:
2846 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2848 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2849 VCL_SESS_ATTR_NONBLOCK));
2850 *buflen = sizeof (*flags);
2851 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2852 "is_nonblocking = %u", getpid (),
2853 session_handle, *flags,
2854 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2860 case VPPCOM_ATTR_SET_FLAGS:
2861 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2863 if (*flags & O_NONBLOCK)
2864 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2866 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2868 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2869 " is_nonblocking = %u",
2870 getpid (), session_handle, *flags,
2871 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2877 case VPPCOM_ATTR_GET_PEER_ADDR:
2878 if (PREDICT_TRUE (buffer && buflen &&
2879 (*buflen >= sizeof (*ep)) && ep->ip))
2881 ep->is_ip4 = session->transport.is_ip4;
2882 ep->port = session->transport.rmt_port;
2883 if (session->transport.is_ip4)
2884 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2885 sizeof (ip4_address_t));
2887 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2888 sizeof (ip6_address_t));
2889 *buflen = sizeof (*ep);
2890 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2891 "addr = %U, port %u", getpid (),
2892 session_handle, ep->is_ip4, format_ip46_address,
2893 &session->transport.rmt_ip,
2894 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2895 clib_net_to_host_u16 (ep->port));
2901 case VPPCOM_ATTR_GET_LCL_ADDR:
2902 if (PREDICT_TRUE (buffer && buflen &&
2903 (*buflen >= sizeof (*ep)) && ep->ip))
2905 ep->is_ip4 = session->transport.is_ip4;
2906 ep->port = session->transport.lcl_port;
2907 if (session->transport.is_ip4)
2908 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
2909 sizeof (ip4_address_t));
2911 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
2912 sizeof (ip6_address_t));
2913 *buflen = sizeof (*ep);
2914 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2915 " addr = %U port %d", getpid (),
2916 session_handle, ep->is_ip4, format_ip46_address,
2917 &session->transport.lcl_ip,
2918 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2919 clib_net_to_host_u16 (ep->port));
2925 case VPPCOM_ATTR_GET_LIBC_EPFD:
2926 rv = session->libc_epfd;
2927 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2931 case VPPCOM_ATTR_SET_LIBC_EPFD:
2932 if (PREDICT_TRUE (buffer && buflen &&
2933 (*buflen == sizeof (session->libc_epfd))))
2935 session->libc_epfd = *(int *) buffer;
2936 *buflen = sizeof (session->libc_epfd);
2938 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2939 "buflen %d", getpid (), session->libc_epfd, *buflen);
2945 case VPPCOM_ATTR_GET_PROTOCOL:
2946 if (buffer && buflen && (*buflen >= sizeof (int)))
2948 *(int *) buffer = session->session_type;
2949 *buflen = sizeof (int);
2951 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2952 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
2959 case VPPCOM_ATTR_GET_LISTEN:
2960 if (buffer && buflen && (*buflen >= sizeof (int)))
2962 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2963 VCL_SESS_ATTR_LISTEN);
2964 *buflen = sizeof (int);
2966 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
2967 getpid (), *(int *) buffer, *buflen);
2973 case VPPCOM_ATTR_GET_ERROR:
2974 if (buffer && buflen && (*buflen >= sizeof (int)))
2976 *(int *) buffer = 0;
2977 *buflen = sizeof (int);
2979 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
2980 getpid (), *(int *) buffer, *buflen);
2986 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
2987 if (buffer && buflen && (*buflen >= sizeof (u32)))
2991 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
2992 session->tx_fifo ? session->tx_fifo->nitems :
2993 vcm->cfg.tx_fifo_size);
2994 *buflen = sizeof (u32);
2996 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
2997 "buflen %d, #VPP-TBD#", getpid (),
2998 *(size_t *) buffer, *(size_t *) buffer, *buflen);
3004 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
3005 if (buffer && buflen && (*buflen == sizeof (u32)))
3008 session->sndbuf_size = *(u32 *) buffer;
3009 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
3010 "buflen %d, #VPP-TBD#", getpid (),
3011 session->sndbuf_size, session->sndbuf_size, *buflen);
3017 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
3018 if (buffer && buflen && (*buflen >= sizeof (u32)))
3022 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
3023 session->rx_fifo ? session->rx_fifo->nitems :
3024 vcm->cfg.rx_fifo_size);
3025 *buflen = sizeof (u32);
3027 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
3028 "buflen %d, #VPP-TBD#", getpid (),
3029 *(size_t *) buffer, *(size_t *) buffer, *buflen);
3035 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
3036 if (buffer && buflen && (*buflen == sizeof (u32)))
3039 session->rcvbuf_size = *(u32 *) buffer;
3040 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
3041 "buflen %d, #VPP-TBD#", getpid (),
3042 session->sndbuf_size, session->sndbuf_size, *buflen);
3048 case VPPCOM_ATTR_GET_REUSEADDR:
3049 if (buffer && buflen && (*buflen >= sizeof (int)))
3052 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3053 VCL_SESS_ATTR_REUSEADDR);
3054 *buflen = sizeof (int);
3056 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
3057 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3063 case VPPCOM_ATTR_SET_REUSEADDR:
3064 if (buffer && buflen && (*buflen == sizeof (int)) &&
3065 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3068 if (*(int *) buffer)
3069 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
3071 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
3073 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
3074 " #VPP-TBD#", getpid (),
3075 VCL_SESS_ATTR_TEST (session->attr,
3076 VCL_SESS_ATTR_REUSEADDR), *buflen);
3082 case VPPCOM_ATTR_GET_REUSEPORT:
3083 if (buffer && buflen && (*buflen >= sizeof (int)))
3086 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3087 VCL_SESS_ATTR_REUSEPORT);
3088 *buflen = sizeof (int);
3090 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
3091 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3097 case VPPCOM_ATTR_SET_REUSEPORT:
3098 if (buffer && buflen && (*buflen == sizeof (int)) &&
3099 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3102 if (*(int *) buffer)
3103 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
3105 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
3107 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
3108 " #VPP-TBD#", getpid (),
3109 VCL_SESS_ATTR_TEST (session->attr,
3110 VCL_SESS_ATTR_REUSEPORT), *buflen);
3116 case VPPCOM_ATTR_GET_BROADCAST:
3117 if (buffer && buflen && (*buflen >= sizeof (int)))
3120 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3121 VCL_SESS_ATTR_BROADCAST);
3122 *buflen = sizeof (int);
3124 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
3125 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3131 case VPPCOM_ATTR_SET_BROADCAST:
3132 if (buffer && buflen && (*buflen == sizeof (int)))
3135 if (*(int *) buffer)
3136 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
3138 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
3140 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
3141 "#VPP-TBD#", getpid (),
3142 VCL_SESS_ATTR_TEST (session->attr,
3143 VCL_SESS_ATTR_BROADCAST), *buflen);
3149 case VPPCOM_ATTR_GET_V6ONLY:
3150 if (buffer && buflen && (*buflen >= sizeof (int)))
3153 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3154 VCL_SESS_ATTR_V6ONLY);
3155 *buflen = sizeof (int);
3157 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
3158 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3164 case VPPCOM_ATTR_SET_V6ONLY:
3165 if (buffer && buflen && (*buflen == sizeof (int)))
3168 if (*(int *) buffer)
3169 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3171 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3173 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
3174 "#VPP-TBD#", getpid (),
3175 VCL_SESS_ATTR_TEST (session->attr,
3176 VCL_SESS_ATTR_V6ONLY), *buflen);
3182 case VPPCOM_ATTR_GET_KEEPALIVE:
3183 if (buffer && buflen && (*buflen >= sizeof (int)))
3186 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3187 VCL_SESS_ATTR_KEEPALIVE);
3188 *buflen = sizeof (int);
3190 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3191 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3197 case VPPCOM_ATTR_SET_KEEPALIVE:
3198 if (buffer && buflen && (*buflen == sizeof (int)))
3201 if (*(int *) buffer)
3202 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3204 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3206 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3207 "#VPP-TBD#", getpid (),
3208 VCL_SESS_ATTR_TEST (session->attr,
3209 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3215 case VPPCOM_ATTR_GET_TCP_NODELAY:
3216 if (buffer && buflen && (*buflen >= sizeof (int)))
3219 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3220 VCL_SESS_ATTR_TCP_NODELAY);
3221 *buflen = sizeof (int);
3223 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3224 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3230 case VPPCOM_ATTR_SET_TCP_NODELAY:
3231 if (buffer && buflen && (*buflen == sizeof (int)))
3234 if (*(int *) buffer)
3235 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3237 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3239 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3240 "#VPP-TBD#", getpid (),
3241 VCL_SESS_ATTR_TEST (session->attr,
3242 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3248 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3249 if (buffer && buflen && (*buflen >= sizeof (int)))
3252 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3253 VCL_SESS_ATTR_TCP_KEEPIDLE);
3254 *buflen = sizeof (int);
3256 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3257 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3263 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3264 if (buffer && buflen && (*buflen == sizeof (int)))
3267 if (*(int *) buffer)
3268 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3270 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3272 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3273 "#VPP-TBD#", getpid (),
3274 VCL_SESS_ATTR_TEST (session->attr,
3275 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3281 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3282 if (buffer && buflen && (*buflen >= sizeof (int)))
3285 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3286 VCL_SESS_ATTR_TCP_KEEPINTVL);
3287 *buflen = sizeof (int);
3289 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3290 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3296 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3297 if (buffer && buflen && (*buflen == sizeof (int)))
3300 if (*(int *) buffer)
3301 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3303 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3305 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3306 "#VPP-TBD#", getpid (),
3307 VCL_SESS_ATTR_TEST (session->attr,
3308 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3314 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3315 if (buffer && buflen && (*buflen >= sizeof (u32)))
3318 *(u32 *) buffer = session->user_mss;
3319 *buflen = sizeof (int);
3321 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3322 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3328 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3329 if (buffer && buflen && (*buflen == sizeof (u32)))
3332 session->user_mss = *(u32 *) buffer;
3334 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3335 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3341 case VPPCOM_ATTR_GET_REFCNT:
3342 rv = vcl_session_get_refcnt (session);
3354 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3355 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3357 vcl_worker_t *wrk = vcl_worker_get_current ();
3359 vcl_session_t *session = 0;
3363 session = vcl_session_get_w_handle (wrk, session_handle);
3364 if (PREDICT_FALSE (!session))
3366 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3367 getpid (), session_handle);
3368 return VPPCOM_EBADFD;
3370 ep->is_ip4 = session->transport.is_ip4;
3371 ep->port = session->transport.rmt_port;
3375 rv = vppcom_session_read (session_handle, buffer, buflen);
3376 else if (flags & MSG_PEEK)
3377 rv = vppcom_session_peek (session_handle, buffer, buflen);
3380 clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d",
3382 return VPPCOM_EAFNOSUPPORT;
3387 if (session->transport.is_ip4)
3388 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3389 sizeof (ip4_address_t));
3391 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3392 sizeof (ip6_address_t));
3399 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3400 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3403 return VPPCOM_EINVAL;
3408 return VPPCOM_EINVAL;
3413 // TBD check the flags and do the right thing
3414 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3415 getpid (), flags, flags);
3418 return (vppcom_session_write_inline (session_handle, buffer, buflen, 1));
3422 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3424 vcl_worker_t *wrk = vcl_worker_get_current ();
3425 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3426 u32 i, keep_trying = 1;
3427 svm_msg_q_msg_t msg;
3431 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3432 getpid (), vp, n_sids, wait_for_time);
3435 return VPPCOM_EFAULT;
3439 vcl_session_t *session;
3441 /* Dequeue all events and drop all unhandled io events */
3442 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3444 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3445 vcl_handle_mq_event (wrk, e);
3446 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3448 vec_reset_length (wrk->unhandled_evts_vector);
3450 for (i = 0; i < n_sids; i++)
3452 session = vcl_session_get (wrk, vp[i].sid);
3455 vp[i].revents = POLLHUP;
3462 if (POLLIN & vp[i].events)
3464 rv = vppcom_session_read_ready (session);
3467 vp[i].revents |= POLLIN;
3474 case VPPCOM_ECONNRESET:
3475 vp[i].revents = POLLHUP;
3479 vp[i].revents = POLLERR;
3486 if (POLLOUT & vp[i].events)
3488 rv = vppcom_session_write_ready (session);
3491 vp[i].revents |= POLLOUT;
3498 case VPPCOM_ECONNRESET:
3499 vp[i].revents = POLLHUP;
3503 vp[i].revents = POLLERR;
3510 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3512 vp[i].revents = POLLNVAL;
3516 if (wait_for_time != -1)
3517 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3519 while ((num_ev == 0) && keep_trying);
3521 if (VPPCOM_DEBUG > 3)
3523 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3524 for (i = 0; i < n_sids; i++)
3526 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3527 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3528 vp[i].events, vp[i].revents);
3535 vppcom_mq_epoll_fd (void)
3537 vcl_worker_t *wrk = vcl_worker_get_current ();
3538 return wrk->mqs_epfd;
3542 vppcom_session_index (uint32_t session_handle)
3544 return session_handle & 0xFFFFFF;
3548 vppcom_session_handle (uint32_t session_index)
3550 return (vcl_get_worker_index () << 24) | session_index;
3554 vppcom_worker_register (void)
3556 if (!vcl_worker_alloc_and_init ())
3557 return VPPCOM_EEXIST;
3559 if (vcl_worker_set_bapi ())
3560 return VPPCOM_EEXIST;
3562 if (vcl_worker_register_with_vpp ())
3563 return VPPCOM_EEXIST;
3569 vppcom_worker_index (void)
3571 return vcl_get_worker_index ();
3575 * fd.io coding-style-patch-verification: ON
3578 * eval: (c-set-style "gnu")