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 if (sigaction (SIGCHLD, &old_sa, 0))
800 VERR ("couldn't restore sigchld");
804 wrk = vcl_worker_get_current ();
805 if (wrk->forked_child == ~0)
808 child_wrk = vcl_worker_get_if_valid (wrk->forked_child);
812 if (si && si->si_pid != child_wrk->current_pid)
814 VDBG (0, "unexpected child pid %u", si->si_pid);
817 vcl_cleanup_forked_child (wrk, child_wrk);
820 if (old_sa.sa_flags & SA_SIGINFO)
822 void (*fn) (int, siginfo_t *, void *) = old_sa.sa_sigaction;
827 void (*fn) (int) = old_sa.sa_handler;
834 vcl_incercept_sigchld ()
837 clib_memset (&sa, 0, sizeof (sa));
838 sa.sa_sigaction = vcl_intercept_sigchld_handler;
839 sa.sa_flags = SA_SIGINFO;
840 if (sigaction (SIGCHLD, &sa, &old_sa))
842 VERR ("couldn't intercept sigchld");
848 vcl_app_pre_fork (void)
850 vcl_incercept_sigchld ();
854 vcl_app_fork_child_handler (void)
856 int rv, parent_wrk_index;
857 vcl_worker_t *parent_wrk;
860 parent_wrk_index = vcl_get_worker_index ();
861 VDBG (0, "initializing forked child with parent wrk %u", parent_wrk_index);
866 vcl_set_worker_index (~0);
867 if (!vcl_worker_alloc_and_init ())
868 VERR ("couldn't allocate new worker");
871 * Attach to binary api
873 child_name = format (0, "%v-child-%u%c", vcm->app_name, getpid (), 0);
875 vppcom_api_hookup ();
876 vcm->app_state = STATE_APP_START;
877 rv = vppcom_connect_to_vpp ((char *) child_name);
878 vec_free (child_name);
881 VERR ("couldn't connect to VPP!");
886 * Register worker with vpp and share sessions
888 vcl_worker_register_with_vpp ();
889 parent_wrk = vcl_worker_get (parent_wrk_index);
890 vcl_worker_share_sessions (parent_wrk);
891 parent_wrk->forked_child = vcl_get_worker_index ();
893 VDBG (0, "forked child main worker initialized");
898 vcl_app_fork_parent_handler (void)
908 * Notify vpp of the disconnect and mark the worker as free. If we're the
909 * last worker, do a full cleanup otherwise, since we're probably a forked
910 * child, avoid syscalls as much as possible. We might've lost privileges.
913 vppcom_app_exit (void)
915 if (!pool_elts (vcm->workers))
917 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
918 vcl_set_worker_index (~0);
920 if (vec_len (vcm->workers) == 1)
921 vl_client_disconnect_from_vlib ();
923 vl_client_send_disconnect (1 /* vpp should cleanup */ );
927 * VPPCOM Public API functions
930 vppcom_app_create (char *app_name)
932 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
937 VDBG (1, "already initialized");
938 return VPPCOM_EEXIST;
942 vppcom_cfg (&vcm->cfg);
945 vcm->main_cpu = pthread_self ();
946 vcm->main_pid = getpid ();
947 vcm->app_name = format (0, "%s", app_name);
948 vppcom_init_error_string_table ();
949 svm_fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva,
950 20 /* timeout in secs */ );
951 pool_alloc (vcm->workers, vcl_cfg->max_workers);
952 clib_spinlock_init (&vcm->workers_lock);
953 clib_rwlock_init (&vcm->segment_table_lock);
954 pthread_atfork (vcl_app_pre_fork, vcl_app_fork_parent_handler,
955 vcl_app_fork_child_handler);
956 atexit (vppcom_app_exit);
958 /* Allocate default worker */
959 vcl_worker_alloc_and_init ();
961 /* API hookup and connect to VPP */
962 vppcom_api_hookup ();
964 vcm->app_state = STATE_APP_START;
965 rv = vppcom_connect_to_vpp (app_name);
968 VERR ("couldn't connect to VPP!");
971 VDBG (0, "sending session enable");
972 rv = vppcom_app_session_enable ();
975 VERR ("vppcom_app_session_enable() failed!");
979 VDBG (0, "sending app attach");
980 rv = vppcom_app_attach ();
983 VERR ("vppcom_app_attach() failed!");
987 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
988 vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
994 vppcom_app_destroy (void)
997 f64 orig_app_timeout;
999 if (!pool_elts (vcm->workers))
1002 vcl_evt (VCL_EVT_DETACH, vcm);
1004 if (pool_elts (vcm->workers) == 1)
1006 vppcom_app_send_detach ();
1007 orig_app_timeout = vcm->cfg.app_timeout;
1008 vcm->cfg.app_timeout = 2.0;
1009 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
1010 vcm->cfg.app_timeout = orig_app_timeout;
1011 if (PREDICT_FALSE (rv))
1012 VDBG (0, "application detach timed out! returning %d (%s)", rv,
1013 vppcom_retval_str (rv));
1014 vec_free (vcm->app_name);
1015 vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ );
1019 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
1022 vcl_set_worker_index (~0);
1023 vcl_elog_stop (vcm);
1024 vl_client_disconnect_from_vlib ();
1028 vppcom_session_create (u8 proto, u8 is_nonblocking)
1030 vcl_worker_t *wrk = vcl_worker_get_current ();
1031 vcl_session_t *session;
1033 session = vcl_session_alloc (wrk);
1035 session->session_type = proto;
1036 session->session_state = STATE_START;
1037 session->vpp_handle = ~0;
1038 session->is_dgram = proto == VPPCOM_PROTO_UDP;
1041 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
1043 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
1044 is_nonblocking, session_index);
1046 VDBG (0, "created sid %u", session->session_index);
1048 return vcl_session_handle (session);
1052 vppcom_session_close (uint32_t session_handle)
1054 vcl_worker_t *wrk = vcl_worker_get_current ();
1055 u8 is_vep, do_disconnect = 1;
1056 vcl_session_t *session = 0;
1057 session_state_t state;
1058 u32 next_sh, vep_sh;
1062 session = vcl_session_get_w_handle (wrk, session_handle);
1064 return VPPCOM_EBADFD;
1066 if (session->shared_index != ~0)
1067 do_disconnect = vcl_worker_unshare_session (wrk, session);
1069 is_vep = session->is_vep;
1070 next_sh = session->vep.next_sh;
1071 vep_sh = session->vep.vep_sh;
1072 state = session->session_state;
1073 vpp_handle = session->vpp_handle;
1075 VDBG (1, "closing session handle %u vpp handle %u", session_handle,
1080 while (next_sh != ~0)
1082 rv = vppcom_epoll_ctl (session_handle, EPOLL_CTL_DEL, next_sh, 0);
1083 if (PREDICT_FALSE (rv < 0))
1084 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u"
1085 " failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
1086 vppcom_retval_str (rv));
1088 next_sh = session->vep.next_sh;
1093 if (session->is_vep_session)
1095 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, session_handle, 0);
1097 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u "
1098 "failed! rv %d (%s)", vpp_handle, session_handle, vep_sh,
1099 rv, vppcom_retval_str (rv));
1105 if (state & STATE_LISTEN)
1107 rv = vppcom_session_unbind (session_handle);
1108 if (PREDICT_FALSE (rv < 0))
1109 VDBG (0, "vpp handle 0x%llx, sid %u: listener unbind failed! "
1110 "rv %d (%s)", vpp_handle, session_handle, rv,
1111 vppcom_retval_str (rv));
1113 else if (state & STATE_OPEN)
1115 rv = vppcom_session_disconnect (session_handle);
1116 if (PREDICT_FALSE (rv < 0))
1117 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1118 "session disconnect failed! rv %d (%s)",
1119 getpid (), vpp_handle, session_handle,
1120 rv, vppcom_retval_str (rv));
1126 if (vcl_session_is_ct (session))
1128 vcl_cut_through_registration_t *ctr;
1131 mq_addr = pointer_to_uword (session->our_evt_q);
1132 ctr = vcl_ct_registration_lock_and_lookup (wrk, mq_addr);
1134 if (ctr->epoll_evt_conn_index != ~0)
1135 vcl_mq_epoll_del_evfd (wrk, ctr->epoll_evt_conn_index);
1136 VDBG (0, "Removing ct registration %u",
1137 vcl_ct_registration_index (wrk, ctr));
1138 vcl_ct_registration_del (wrk, ctr);
1139 vcl_ct_registration_lookup_del (wrk, mq_addr);
1140 vcl_ct_registration_unlock (wrk);
1143 if (vpp_handle != ~0)
1145 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
1147 vcl_session_free (wrk, session);
1149 VDBG (0, "session handle %u [0x%llx] removed", session_handle, vpp_handle);
1151 vcl_evt (VCL_EVT_CLOSE, session, rv);
1157 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1159 vcl_worker_t *wrk = vcl_worker_get_current ();
1160 vcl_session_t *session = 0;
1163 return VPPCOM_EINVAL;
1165 session = vcl_session_get_w_handle (wrk, session_handle);
1167 return VPPCOM_EBADFD;
1169 if (session->is_vep)
1171 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1172 "bind to an epoll session!", getpid (), session_handle);
1173 return VPPCOM_EBADFD;
1176 session->transport.is_ip4 = ep->is_ip4;
1178 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1179 sizeof (ip4_address_t));
1181 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1182 sizeof (ip6_address_t));
1183 session->transport.lcl_port = ep->port;
1185 VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
1186 "proto %s", getpid (), session_handle,
1187 session->transport.is_ip4 ? "IPv4" : "IPv6",
1188 format_ip46_address, &session->transport.lcl_ip,
1189 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1190 clib_net_to_host_u16 (session->transport.lcl_port),
1191 session->session_type ? "UDP" : "TCP");
1192 vcl_evt (VCL_EVT_BIND, session);
1194 if (session->session_type == VPPCOM_PROTO_UDP)
1195 vppcom_session_listen (session_handle, 10);
1201 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1203 vcl_worker_t *wrk = vcl_worker_get_current ();
1204 vcl_session_t *listen_session = 0;
1205 u64 listen_vpp_handle;
1208 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1209 if (!listen_session || listen_session->is_vep)
1210 return VPPCOM_EBADFD;
1212 if (q_len == 0 || q_len == ~0)
1213 q_len = vcm->cfg.listen_queue_size;
1215 listen_vpp_handle = listen_session->vpp_handle;
1216 if (listen_session->session_state & STATE_LISTEN)
1218 VDBG (0, "session %u [0x%llx]: already in listen state!",
1219 listen_sh, listen_vpp_handle);
1223 VDBG (0, "session %u [0x%llx]: sending vpp listen request...",
1224 listen_sh, listen_vpp_handle);
1227 * Send listen request to vpp and wait for reply
1229 vppcom_send_bind_sock (listen_session);
1230 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1232 vcm->cfg.session_timeout);
1234 if (PREDICT_FALSE (rv))
1236 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1237 VDBG (0, "session %u [0x%llx]: listen failed! returning %d (%s)",
1238 listen_sh, listen_session->vpp_handle, rv,
1239 vppcom_retval_str (rv));
1247 validate_args_session_accept_ (vcl_worker_t * wrk,
1248 vcl_session_t * listen_session)
1250 /* Input validation - expects spinlock on sessions_lockp */
1251 if (listen_session->is_vep)
1253 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1254 "epoll session!", getpid (),
1255 listen_session->session_index);
1256 return VPPCOM_EBADFD;
1259 if (listen_session->session_state != STATE_LISTEN)
1261 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1262 "not in listen state! state 0x%x (%s)", getpid (),
1263 listen_session->vpp_handle, listen_session->session_index,
1264 listen_session->session_state,
1265 vppcom_session_state_str (listen_session->session_state));
1266 return VPPCOM_EBADFD;
1272 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1275 u32 client_session_index = ~0, listen_session_index, accept_flags = 0;
1276 vcl_worker_t *wrk = vcl_worker_get_current ();
1277 session_accepted_msg_t accepted_msg;
1278 vcl_session_t *listen_session = 0;
1279 vcl_session_t *client_session = 0;
1280 svm_msg_q_t *vpp_evt_q;
1281 vcl_session_msg_t *evt;
1282 u64 listen_vpp_handle;
1283 svm_msg_q_msg_t msg;
1288 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1289 if (!listen_session)
1290 return VPPCOM_EBADFD;
1292 listen_session_index = listen_session->session_index;
1293 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1296 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1298 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1299 accept_flags = evt->flags;
1300 accepted_msg = evt->accepted_msg;
1304 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1305 VCL_SESS_ATTR_NONBLOCK);
1306 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1307 return VPPCOM_EAGAIN;
1311 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1312 return VPPCOM_EAGAIN;
1314 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1315 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1317 clib_warning ("discarded event: %u", e->event_type);
1318 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1321 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1322 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1328 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1329 listen_session = vcl_session_get (wrk, listen_session_index);
1330 client_session = vcl_session_get (wrk, client_session_index);
1332 if (flags & O_NONBLOCK)
1333 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1335 listen_vpp_handle = listen_session->vpp_handle;
1336 VDBG (1, "vpp handle 0x%llx, sid %u: Got a client request! "
1337 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1338 listen_vpp_handle, listen_session_handle,
1339 client_session->vpp_handle, client_session_index,
1340 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1341 VCL_SESS_ATTR_NONBLOCK));
1345 ep->is_ip4 = client_session->transport.is_ip4;
1346 ep->port = client_session->transport.rmt_port;
1347 if (client_session->transport.is_ip4)
1348 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1349 sizeof (ip4_address_t));
1351 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1352 sizeof (ip6_address_t));
1355 if (accepted_msg.server_event_queue_address)
1356 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1359 vpp_evt_q = client_session->vpp_evt_q;
1361 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1362 client_session->vpp_handle, 0);
1364 VDBG (0, "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u "
1365 "local: %U:%u", listen_session_handle, listen_vpp_handle,
1366 client_session_index, client_session->vpp_handle,
1367 format_ip46_address, &client_session->transport.rmt_ip,
1368 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1369 clib_net_to_host_u16 (client_session->transport.rmt_port),
1370 format_ip46_address, &client_session->transport.lcl_ip,
1371 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1372 clib_net_to_host_u16 (client_session->transport.lcl_port));
1373 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1374 client_session_index);
1377 * Session might have been closed already
1381 svm_msg_q_t *mq = vcl_session_vpp_evt_q (wrk, client_session);
1382 if (accept_flags & VCL_ACCEPTED_F_CLOSED)
1384 client_session->session_state = STATE_DISCONNECT;
1385 vcl_send_session_disconnected_reply (mq, wrk->my_client_index,
1386 client_session->vpp_handle, 0);
1388 else if (accept_flags & VCL_ACCEPTED_F_RESET)
1390 client_session->session_state = STATE_DISCONNECT;
1391 vcl_send_session_reset_reply (mq, wrk->my_client_index,
1392 client_session->vpp_handle, 0);
1395 return vcl_session_handle (client_session);
1399 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1401 vcl_worker_t *wrk = vcl_worker_get_current ();
1402 vcl_session_t *session = 0;
1406 session = vcl_session_get_w_handle (wrk, session_handle);
1408 return VPPCOM_EBADFD;
1409 session_index = session->session_index;
1411 if (PREDICT_FALSE (session->is_vep))
1413 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1414 "connect on an epoll session!", getpid (),
1416 return VPPCOM_EBADFD;
1419 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1421 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
1422 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1423 getpid (), session->vpp_handle, session_handle,
1424 session->transport.is_ip4 ? "IPv4" : "IPv6",
1425 format_ip46_address,
1426 &session->transport.rmt_ip, session->transport.is_ip4 ?
1427 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1428 clib_net_to_host_u16 (session->transport.rmt_port),
1429 session->session_type ? "UDP" : "TCP", session->session_state,
1430 vppcom_session_state_str (session->session_state));
1434 session->transport.is_ip4 = server_ep->is_ip4;
1435 if (session->transport.is_ip4)
1436 clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
1437 sizeof (ip4_address_t));
1439 clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
1440 sizeof (ip6_address_t));
1441 session->transport.rmt_port = server_ep->port;
1443 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
1445 getpid (), session->vpp_handle, session_handle,
1446 session->transport.is_ip4 ? "IPv4" : "IPv6",
1447 format_ip46_address,
1448 &session->transport.rmt_ip, session->transport.is_ip4 ?
1449 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1450 clib_net_to_host_u16 (session->transport.rmt_port),
1451 session->session_type ? "UDP" : "TCP");
1454 * Send connect request and wait for reply from vpp
1456 vppcom_send_connect_sock (session);
1457 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1458 vcm->cfg.session_timeout);
1460 session = vcl_session_get (wrk, session_index);
1462 if (PREDICT_FALSE (rv))
1464 if (VPPCOM_DEBUG > 0)
1467 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1468 "failed! returning %d (%s)", getpid (),
1469 session->vpp_handle, session_handle, rv,
1470 vppcom_retval_str (rv));
1472 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1473 "returning %d (%s)", getpid (),
1474 session_handle, rv, vppcom_retval_str (rv));
1478 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1479 getpid (), session->vpp_handle, session_handle);
1485 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1488 return (e->event_type == FIFO_EVENT_APP_RX
1489 && e->fifo->client_session_index == sid);
1491 return (e->event_type == SESSION_IO_EVT_CT_TX);
1495 vcl_session_is_readable (vcl_session_t * s)
1497 return ((s->session_state & STATE_OPEN)
1498 || (s->session_state == STATE_LISTEN
1499 && s->session_type == VPPCOM_PROTO_UDP));
1503 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1506 vcl_worker_t *wrk = vcl_worker_get_current ();
1507 int n_read = 0, rv, is_nonblocking;
1508 vcl_session_t *s = 0;
1509 svm_fifo_t *rx_fifo;
1510 svm_msg_q_msg_t msg;
1515 if (PREDICT_FALSE (!buf))
1516 return VPPCOM_EINVAL;
1518 s = vcl_session_get_w_handle (wrk, session_handle);
1519 if (PREDICT_FALSE (!s || s->is_vep))
1520 return VPPCOM_EBADFD;
1522 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1524 session_state_t state = s->session_state;
1525 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1527 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! "
1528 "state 0x%x (%s), returning %d (%s)",
1529 getpid (), s->vpp_handle, session_handle, state,
1530 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1534 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1535 is_ct = vcl_session_is_ct (s);
1536 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1537 rx_fifo = s->rx_fifo;
1540 if (svm_fifo_is_empty (rx_fifo))
1544 svm_fifo_unset_event (rx_fifo);
1545 return VPPCOM_EWOULDBLOCK;
1547 while (svm_fifo_is_empty (rx_fifo))
1549 svm_fifo_unset_event (rx_fifo);
1550 svm_msg_q_lock (mq);
1551 if (svm_msg_q_is_empty (mq))
1552 svm_msg_q_wait (mq);
1554 svm_msg_q_sub_w_lock (mq, &msg);
1555 e = svm_msg_q_msg_data (mq, &msg);
1556 svm_msg_q_unlock (mq);
1557 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1558 vcl_handle_mq_event (wrk, e);
1559 svm_msg_q_free_msg (mq, &msg);
1561 if (PREDICT_FALSE (s->session_state == STATE_DISCONNECT))
1562 return VPPCOM_ECONNRESET;
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))
1647 vcl_handle_mq_event (wrk, e);
1648 svm_msg_q_free_msg (mq, &msg);
1650 if (PREDICT_FALSE (s->session_state == STATE_DISCONNECT))
1651 return VPPCOM_ECONNRESET;
1655 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1656 svm_fifo_unset_event (rx_fifo);
1658 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1660 /* If the peer is not polling send notification */
1661 if (!svm_fifo_has_event (s->rx_fifo))
1662 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1663 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1670 vppcom_session_free_segments (uint32_t session_handle,
1671 vppcom_data_segments_t ds)
1673 vcl_worker_t *wrk = vcl_worker_get_current ();
1676 s = vcl_session_get_w_handle (wrk, session_handle);
1677 if (PREDICT_FALSE (!s || s->is_vep))
1680 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1684 vppcom_session_read_ready (vcl_session_t * session)
1686 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1687 if (PREDICT_FALSE (session->is_vep))
1689 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1690 "epoll session!", getpid (), session->session_index);
1691 return VPPCOM_EBADFD;
1694 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1696 session_state_t state = session->session_state;
1699 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1701 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1702 " state 0x%x (%s), returning %d (%s)", getpid (),
1703 session->vpp_handle, session->session_index, state,
1704 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1708 if (session->session_state & STATE_LISTEN)
1709 return clib_fifo_elts (session->accept_evts_fifo);
1711 return svm_fifo_max_dequeue (session->rx_fifo);
1715 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1717 u32 first_copy = clib_min (ds[0].len, max_bytes);
1718 clib_memcpy_fast (buf, ds[0].data, first_copy);
1719 if (first_copy < max_bytes)
1721 clib_memcpy_fast (buf + first_copy, ds[1].data,
1722 clib_min (ds[1].len, max_bytes - first_copy));
1728 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1731 return (e->event_type == FIFO_EVENT_APP_TX
1732 && e->fifo->client_session_index == sid);
1734 return (e->event_type == SESSION_IO_EVT_CT_RX);
1738 vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
1741 vcl_worker_t *wrk = vcl_worker_get_current ();
1742 int rv, n_write, is_nonblocking;
1743 vcl_session_t *s = 0;
1744 svm_fifo_t *tx_fifo = 0;
1745 session_evt_type_t et;
1746 svm_msg_q_msg_t msg;
1751 if (PREDICT_FALSE (!buf))
1752 return VPPCOM_EINVAL;
1754 s = vcl_session_get_w_handle (wrk, session_handle);
1755 if (PREDICT_FALSE (!s))
1756 return VPPCOM_EBADFD;
1758 if (PREDICT_FALSE (s->is_vep))
1760 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1761 "cannot write to an epoll session!",
1762 getpid (), s->vpp_handle, session_handle);
1764 return VPPCOM_EBADFD;
1767 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1769 session_state_t state = s->session_state;
1770 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1771 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1772 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1773 state, vppcom_session_state_str (state));
1777 tx_fifo = s->tx_fifo;
1778 is_ct = vcl_session_is_ct (s);
1779 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1780 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1781 if (svm_fifo_is_full (tx_fifo))
1785 return VPPCOM_EWOULDBLOCK;
1787 while (svm_fifo_is_full (tx_fifo))
1789 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1790 svm_msg_q_lock (mq);
1791 if (svm_msg_q_is_empty (mq))
1792 svm_msg_q_wait (mq);
1794 svm_msg_q_sub_w_lock (mq, &msg);
1795 e = svm_msg_q_msg_data (mq, &msg);
1796 svm_msg_q_unlock (mq);
1798 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1799 vcl_handle_mq_event (wrk, e);
1800 svm_msg_q_free_msg (mq, &msg);
1802 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1803 return VPPCOM_ECONNRESET;
1807 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1808 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1809 if (is_flush && !vcl_session_is_ct (s))
1810 et = SESSION_IO_EVT_TX_FLUSH;
1813 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1814 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1816 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1819 ASSERT (n_write > 0);
1821 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1822 s->vpp_handle, session_handle, n_write);
1828 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1830 return vppcom_session_write_inline (session_handle, buf, n,
1834 static vcl_session_t *
1835 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1838 s = vcl_session_get (wrk, f->client_session_index);
1842 if (type == 0 && s->rx_fifo == f)
1845 if (type == 1 && s->tx_fifo == f)
1848 s = vcl_session_get (wrk, f->master_session_index);
1851 if (type == 0 && s->rx_fifo == f)
1853 if (type == 1 && s->tx_fifo == f)
1860 vppcom_session_write_ready (vcl_session_t * session)
1862 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1863 if (PREDICT_FALSE (session->is_vep))
1865 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1866 "cannot write to an epoll session!",
1867 getpid (), session->vpp_handle, session->session_index);
1868 return VPPCOM_EBADFD;
1871 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1873 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1874 "cannot write to a listen session!",
1875 getpid (), session->vpp_handle, session->session_index);
1876 return VPPCOM_EBADFD;
1879 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1881 session_state_t state = session->session_state;
1884 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1885 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1886 "session is not open! state 0x%x (%s), "
1887 "returning %d (%s)", getpid (), session->vpp_handle,
1888 session->session_index,
1889 state, vppcom_session_state_str (state),
1890 rv, vppcom_retval_str (rv));
1894 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1895 getpid (), session->vpp_handle, session->session_index,
1896 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1898 return svm_fifo_max_enqueue (session->tx_fifo);
1902 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1904 svm_msg_q_msg_t *msg;
1908 n_msgs = svm_msg_q_size (mq);
1909 for (i = 0; i < n_msgs; i++)
1911 vec_add2 (wrk->mq_msg_vector, msg, 1);
1912 svm_msg_q_sub_w_lock (mq, msg);
1917 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1918 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1920 svm_fifo_unset_event (_fifo); \
1921 if (svm_fifo_is_empty (_fifo)) \
1926 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1927 unsigned long n_bits, unsigned long *read_map,
1928 unsigned long *write_map,
1929 unsigned long *except_map, u32 * bits_set)
1931 session_disconnected_msg_t *disconnected_msg;
1932 session_connected_msg_t *connected_msg;
1933 vcl_session_t *session;
1936 switch (e->event_type)
1938 case FIFO_EVENT_APP_RX:
1939 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1940 sid = e->fifo->client_session_index;
1941 session = vcl_session_get (wrk, sid);
1944 if (sid < n_bits && read_map)
1946 clib_bitmap_set_no_check (read_map, sid, 1);
1950 case FIFO_EVENT_APP_TX:
1951 sid = e->fifo->client_session_index;
1952 session = vcl_session_get (wrk, sid);
1955 if (sid < n_bits && write_map)
1957 clib_bitmap_set_no_check (write_map, sid, 1);
1961 case SESSION_IO_EVT_CT_TX:
1962 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1963 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
1966 sid = session->session_index;
1967 if (sid < n_bits && read_map)
1969 clib_bitmap_set_no_check (read_map, sid, 1);
1973 case SESSION_IO_EVT_CT_RX:
1974 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
1977 sid = session->session_index;
1978 if (sid < n_bits && write_map)
1980 clib_bitmap_set_no_check (write_map, sid, 1);
1984 case SESSION_CTRL_EVT_ACCEPTED:
1985 session = vcl_session_accepted (wrk,
1986 (session_accepted_msg_t *) e->data);
1989 sid = session->session_index;
1990 if (sid < n_bits && read_map)
1992 clib_bitmap_set_no_check (read_map, sid, 1);
1996 case SESSION_CTRL_EVT_CONNECTED:
1997 connected_msg = (session_connected_msg_t *) e->data;
1998 vcl_session_connected_handler (wrk, connected_msg);
2000 case SESSION_CTRL_EVT_DISCONNECTED:
2001 disconnected_msg = (session_disconnected_msg_t *) e->data;
2002 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2005 sid = session->session_index;
2006 if (sid < n_bits && except_map)
2008 clib_bitmap_set_no_check (except_map, sid, 1);
2012 case SESSION_CTRL_EVT_RESET:
2013 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2014 if (sid < n_bits && except_map)
2016 clib_bitmap_set_no_check (except_map, sid, 1);
2021 clib_warning ("unhandled: %u", e->event_type);
2027 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2028 unsigned long n_bits, unsigned long *read_map,
2029 unsigned long *write_map, unsigned long *except_map,
2030 double time_to_wait, u32 * bits_set)
2032 svm_msg_q_msg_t *msg;
2036 svm_msg_q_lock (mq);
2037 if (svm_msg_q_is_empty (mq))
2041 svm_msg_q_unlock (mq);
2047 svm_msg_q_unlock (mq);
2050 else if (time_to_wait < 0)
2052 svm_msg_q_wait (mq);
2056 if (svm_msg_q_timedwait (mq, time_to_wait))
2058 svm_msg_q_unlock (mq);
2063 vcl_mq_dequeue_batch (wrk, mq);
2064 svm_msg_q_unlock (mq);
2066 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2068 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2069 e = svm_msg_q_msg_data (mq, msg);
2070 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
2071 except_map, bits_set);
2072 svm_msg_q_free_msg (mq, msg);
2074 vec_reset_length (wrk->mq_msg_vector);
2079 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
2080 unsigned long *read_map, unsigned long *write_map,
2081 unsigned long *except_map, double time_to_wait,
2084 double total_wait = 0, wait_slice;
2085 vcl_cut_through_registration_t *cr;
2087 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
2088 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
2091 vcl_ct_registration_lock (wrk);
2093 pool_foreach (cr, wrk->cut_through_registrations, ({
2094 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
2098 vcl_ct_registration_unlock (wrk);
2100 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2101 write_map, except_map, time_to_wait, bits_set);
2102 total_wait += wait_slice;
2106 while (total_wait < time_to_wait);
2112 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
2113 unsigned long *read_map, unsigned long *write_map,
2114 unsigned long *except_map, double time_to_wait,
2117 vcl_mq_evt_conn_t *mqc;
2118 int __clib_unused n_read;
2122 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2123 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2124 vec_len (wrk->mq_events), time_to_wait);
2125 for (i = 0; i < n_mq_evts; i++)
2127 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2128 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2129 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2130 except_map, 0, bits_set);
2133 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2137 vppcom_select (unsigned long n_bits, unsigned long *read_map,
2138 unsigned long *write_map, unsigned long *except_map,
2139 double time_to_wait)
2141 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2142 vcl_worker_t *wrk = vcl_worker_get_current ();
2143 vcl_session_t *session = 0;
2146 ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
2148 if (n_bits && read_map)
2150 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2151 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2152 vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2153 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2155 if (n_bits && write_map)
2157 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2158 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2159 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2160 memset (write_map, 0,
2161 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2163 if (n_bits && except_map)
2165 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2166 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2167 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2168 memset (except_map, 0,
2169 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2179 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2180 if (!(session = vcl_session_get (wrk, sid)))
2182 if (except_map && sid < minbits)
2183 clib_bitmap_set_no_check (except_map, sid, 1);
2187 rv = svm_fifo_is_full (session->tx_fifo);
2190 clib_bitmap_set_no_check (write_map, sid, 1);
2199 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2200 if (!(session = vcl_session_get (wrk, sid)))
2202 if (except_map && sid < minbits)
2203 clib_bitmap_set_no_check (except_map, sid, 1);
2207 rv = vppcom_session_read_ready (session);
2210 clib_bitmap_set_no_check (read_map, sid, 1);
2218 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2220 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2221 read_map, write_map, except_map, &bits_set);
2223 vec_reset_length (wrk->unhandled_evts_vector);
2225 if (vcm->cfg.use_mq_eventfd)
2226 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2227 time_to_wait, &bits_set);
2229 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2230 time_to_wait, &bits_set);
2236 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2238 vcl_session_t *session;
2239 vppcom_epoll_t *vep;
2242 if (VPPCOM_DEBUG <= 1)
2245 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2246 session = vcl_session_get (wrk, vep_idx);
2247 if (PREDICT_FALSE (!session))
2249 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2250 getpid (), vep_idx);
2253 if (PREDICT_FALSE (!session->is_vep))
2255 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2256 getpid (), vep_idx);
2259 vep = &session->vep;
2260 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2263 " is_vep_session = %u\n"
2264 " next_sid = 0x%x (%u)\n"
2265 " wait_cont_idx = 0x%x (%u)\n"
2266 "}\n", getpid (), vep_idx,
2267 session->is_vep, session->is_vep_session,
2268 vep->next_sh, vep->next_sh,
2269 session->wait_cont_idx, session->wait_cont_idx);
2271 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2273 session = vcl_session_get (wrk, sid);
2274 if (PREDICT_FALSE (!session))
2276 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2279 if (PREDICT_FALSE (session->is_vep))
2280 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2281 getpid (), vep_idx);
2282 else if (PREDICT_FALSE (!session->is_vep_session))
2284 clib_warning ("VCL<%d>: ERROR: session (%u) "
2285 "is not a vep session!", getpid (), sid);
2288 vep = &session->vep;
2289 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2290 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2291 "vep_idx (%u)!", getpid (),
2292 sid, session->vep.vep_sh, vep_idx);
2293 if (session->is_vep_session)
2295 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2297 " next_sid = 0x%x (%u)\n"
2298 " prev_sid = 0x%x (%u)\n"
2299 " vep_idx = 0x%x (%u)\n"
2300 " ev.events = 0x%x\n"
2301 " ev.data.u64 = 0x%llx\n"
2305 vep->next_sh, vep->next_sh,
2306 vep->prev_sh, vep->prev_sh,
2307 vep->vep_sh, vep->vep_sh,
2308 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2313 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2314 getpid (), vep_idx);
2318 vppcom_epoll_create (void)
2320 vcl_worker_t *wrk = vcl_worker_get_current ();
2321 vcl_session_t *vep_session;
2323 vep_session = vcl_session_alloc (wrk);
2325 vep_session->is_vep = 1;
2326 vep_session->vep.vep_sh = ~0;
2327 vep_session->vep.next_sh = ~0;
2328 vep_session->vep.prev_sh = ~0;
2329 vep_session->wait_cont_idx = ~0;
2330 vep_session->vpp_handle = ~0;
2332 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_sh);
2333 VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!",
2334 getpid (), vep_session->session_index, vep_session->session_index);
2336 return vcl_session_handle (vep_session);
2340 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2341 struct epoll_event *event)
2343 vcl_worker_t *wrk = vcl_worker_get_current ();
2344 vcl_session_t *vep_session;
2345 vcl_session_t *session;
2348 if (vep_handle == session_handle)
2350 clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!",
2351 getpid (), vep_handle);
2352 return VPPCOM_EINVAL;
2355 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2356 if (PREDICT_FALSE (!vep_session))
2358 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_handle);
2359 return VPPCOM_EBADFD;
2361 if (PREDICT_FALSE (!vep_session->is_vep))
2363 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2364 getpid (), vep_handle);
2365 return VPPCOM_EINVAL;
2368 ASSERT (vep_session->vep.vep_sh == ~0);
2369 ASSERT (vep_session->vep.prev_sh == ~0);
2371 session = vcl_session_get_w_handle (wrk, session_handle);
2372 if (PREDICT_FALSE (!session))
2374 VDBG (0, "VCL<%d>: ERROR: Invalid session_handle (%u)!",
2375 getpid (), session_handle);
2376 return VPPCOM_EBADFD;
2378 if (PREDICT_FALSE (session->is_vep))
2380 clib_warning ("ERROR: session_handle (%u) is a vep!", vep_handle);
2381 return VPPCOM_EINVAL;
2387 if (PREDICT_FALSE (!event))
2389 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to "
2390 "epoll_event structure!", getpid ());
2391 return VPPCOM_EINVAL;
2393 if (vep_session->vep.next_sh != ~0)
2395 vcl_session_t *next_session;
2396 next_session = vcl_session_get_w_handle (wrk,
2397 vep_session->vep.next_sh);
2398 if (PREDICT_FALSE (!next_session))
2400 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid "
2401 "vep.next_sid (%u) on vep_idx (%u)!",
2402 getpid (), 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, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x, "
2418 "data 0x%llx!", getpid (), vep_handle, session_handle,
2419 event->events, event->data.u64);
2420 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2424 if (PREDICT_FALSE (!event))
2426 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to "
2427 "epoll_event structure!", getpid ());
2431 else if (PREDICT_FALSE (!session->is_vep_session))
2433 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2434 "not a vep session!", getpid (), session_handle);
2438 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2440 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2441 "vep_idx (%u) != vep_idx (%u)!",
2442 getpid (), session_handle,
2443 session->vep.vep_sh, vep_handle);
2447 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2448 session->vep.ev = *event;
2449 VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
2450 " data 0x%llx!", getpid (), vep_handle, session_handle,
2451 event->events, event->data.u64);
2455 if (PREDICT_FALSE (!session->is_vep_session))
2457 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2458 "not a vep session!", getpid (), session_handle);
2462 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2464 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2465 "vep_idx (%u) != vep_idx (%u)!",
2466 getpid (), session_handle,
2467 session->vep.vep_sh, vep_handle);
2472 vep_session->wait_cont_idx =
2473 (vep_session->wait_cont_idx == session_handle) ?
2474 session->vep.next_sh : vep_session->wait_cont_idx;
2476 if (session->vep.prev_sh == vep_handle)
2477 vep_session->vep.next_sh = session->vep.next_sh;
2480 vcl_session_t *prev_session;
2481 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2482 if (PREDICT_FALSE (!prev_session))
2484 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2485 "vep.prev_sid (%u) on sid (%u)!",
2486 getpid (), session->vep.prev_sh, session_handle);
2487 return VPPCOM_EBADFD;
2489 ASSERT (prev_session->vep.next_sh == session_handle);
2490 prev_session->vep.next_sh = session->vep.next_sh;
2492 if (session->vep.next_sh != ~0)
2494 vcl_session_t *next_session;
2495 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2496 if (PREDICT_FALSE (!next_session))
2498 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2499 "vep.next_sid (%u) on sid (%u)!",
2500 getpid (), session->vep.next_sh, session_handle);
2501 return VPPCOM_EBADFD;
2503 ASSERT (next_session->vep.prev_sh == session_handle);
2504 next_session->vep.prev_sh = session->vep.prev_sh;
2507 memset (&session->vep, 0, sizeof (session->vep));
2508 session->vep.next_sh = ~0;
2509 session->vep.prev_sh = ~0;
2510 session->vep.vep_sh = ~0;
2511 session->is_vep_session = 0;
2512 VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!",
2513 getpid (), vep_handle, session_handle);
2514 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2518 clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op);
2522 vep_verify_epoll_chain (wrk, vep_handle);
2529 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2530 struct epoll_event *events, u32 * num_ev)
2532 session_disconnected_msg_t *disconnected_msg;
2533 session_connected_msg_t *connected_msg;
2534 u32 sid = ~0, session_events;
2535 u64 session_evt_data = ~0;
2536 vcl_session_t *session;
2539 switch (e->event_type)
2541 case FIFO_EVENT_APP_RX:
2542 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2543 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2544 sid = e->fifo->client_session_index;
2545 if (!(session = vcl_session_get (wrk, sid)))
2547 session_events = session->vep.ev.events;
2548 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2551 events[*num_ev].events |= EPOLLIN;
2552 session_evt_data = session->vep.ev.data.u64;
2553 session->has_rx_evt = 1;
2555 case FIFO_EVENT_APP_TX:
2556 sid = e->fifo->client_session_index;
2557 if (!(session = vcl_session_get (wrk, sid)))
2559 session_events = session->vep.ev.events;
2560 if (!(EPOLLOUT & session_events))
2563 events[*num_ev].events |= EPOLLOUT;
2564 session_evt_data = session->vep.ev.data.u64;
2566 case SESSION_IO_EVT_CT_TX:
2567 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2568 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2569 if (PREDICT_FALSE (!session))
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 if (PREDICT_FALSE (!session))
2584 sid = session->session_index;
2585 session_events = session->vep.ev.events;
2586 if (!(EPOLLOUT & session_events))
2589 events[*num_ev].events |= EPOLLOUT;
2590 session_evt_data = session->vep.ev.data.u64;
2592 case SESSION_CTRL_EVT_ACCEPTED:
2593 session = vcl_session_accepted (wrk,
2594 (session_accepted_msg_t *) e->data);
2598 session_events = session->vep.ev.events;
2599 if (!(EPOLLIN & session_events))
2603 events[*num_ev].events |= EPOLLIN;
2604 session_evt_data = session->vep.ev.data.u64;
2606 case SESSION_CTRL_EVT_CONNECTED:
2607 connected_msg = (session_connected_msg_t *) e->data;
2608 vcl_session_connected_handler (wrk, connected_msg);
2609 /* Generate EPOLLOUT because there's no connected event */
2610 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2611 if (!(session = vcl_session_get (wrk, sid)))
2613 session_events = session->vep.ev.events;
2614 if (EPOLLOUT & session_events)
2617 events[*num_ev].events |= EPOLLOUT;
2618 session_evt_data = session->vep.ev.data.u64;
2621 case SESSION_CTRL_EVT_DISCONNECTED:
2622 disconnected_msg = (session_disconnected_msg_t *) e->data;
2623 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2627 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2628 session_evt_data = session->vep.ev.data.u64;
2629 session_events = session->vep.ev.events;
2631 case SESSION_CTRL_EVT_RESET:
2632 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2633 if (!(session = vcl_session_get (wrk, sid)))
2636 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2637 session_evt_data = session->vep.ev.data.u64;
2638 session_events = session->vep.ev.events;
2641 VDBG (0, "unhandled: %u", e->event_type);
2647 events[*num_ev].data.u64 = session_evt_data;
2648 if (EPOLLONESHOT & session_events)
2650 session = vcl_session_get (wrk, sid);
2651 session->vep.ev.events = 0;
2658 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2659 struct epoll_event *events, u32 maxevents,
2660 double wait_for_time, u32 * num_ev)
2662 svm_msg_q_msg_t *msg;
2666 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2667 goto handle_dequeued;
2669 svm_msg_q_lock (mq);
2670 if (svm_msg_q_is_empty (mq))
2674 svm_msg_q_unlock (mq);
2677 else if (wait_for_time < 0)
2679 svm_msg_q_wait (mq);
2683 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2685 svm_msg_q_unlock (mq);
2690 vcl_mq_dequeue_batch (wrk, mq);
2691 svm_msg_q_unlock (mq);
2694 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2696 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2697 e = svm_msg_q_msg_data (mq, msg);
2698 if (*num_ev < maxevents)
2699 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2701 vec_add1 (wrk->unhandled_evts_vector, *e);
2702 svm_msg_q_free_msg (mq, msg);
2704 vec_reset_length (wrk->mq_msg_vector);
2710 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2711 int maxevents, u32 n_evts, double wait_for_time)
2713 vcl_cut_through_registration_t *cr;
2714 double total_wait = 0, wait_slice;
2717 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2718 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2722 vcl_ct_registration_lock (wrk);
2724 pool_foreach (cr, wrk->cut_through_registrations, ({
2725 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2728 vcl_ct_registration_unlock (wrk);
2730 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2731 maxevents, n_evts ? 0 : wait_slice,
2734 total_wait += wait_slice;
2738 while (total_wait < wait_for_time);
2743 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2744 int maxevents, u32 n_evts, double wait_for_time)
2746 vcl_mq_evt_conn_t *mqc;
2747 int __clib_unused n_read;
2751 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2753 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2754 vec_len (wrk->mq_events), wait_for_time);
2755 for (i = 0; i < n_mq_evts; i++)
2757 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2758 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2759 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2761 if (!n_evts && n_mq_evts > 0)
2764 return (int) n_evts;
2768 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2769 int maxevents, double wait_for_time)
2771 vcl_worker_t *wrk = vcl_worker_get_current ();
2772 vcl_session_t *vep_session;
2776 if (PREDICT_FALSE (maxevents <= 0))
2778 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2779 getpid (), maxevents);
2780 return VPPCOM_EINVAL;
2783 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2785 return VPPCOM_EBADFD;
2787 if (PREDICT_FALSE (!vep_session->is_vep))
2789 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2790 getpid (), vep_handle);
2791 return VPPCOM_EINVAL;
2794 memset (events, 0, sizeof (*events) * maxevents);
2796 if (vec_len (wrk->unhandled_evts_vector))
2798 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2800 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2802 if (n_evts == maxevents)
2809 vec_delete (wrk->unhandled_evts_vector, i, 0);
2812 if (vcm->cfg.use_mq_eventfd)
2813 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2816 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2821 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2822 void *buffer, uint32_t * buflen)
2824 vcl_worker_t *wrk = vcl_worker_get_current ();
2825 vcl_session_t *session;
2827 u32 *flags = buffer;
2828 vppcom_endpt_t *ep = buffer;
2830 session = vcl_session_get_w_handle (wrk, session_handle);
2832 return VPPCOM_EBADFD;
2836 case VPPCOM_ATTR_GET_NREAD:
2837 rv = vppcom_session_read_ready (session);
2838 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2842 case VPPCOM_ATTR_GET_NWRITE:
2843 rv = vppcom_session_write_ready (session);
2844 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2845 getpid (), session_handle, rv);
2848 case VPPCOM_ATTR_GET_FLAGS:
2849 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2851 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2852 VCL_SESS_ATTR_NONBLOCK));
2853 *buflen = sizeof (*flags);
2854 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2855 "is_nonblocking = %u", getpid (),
2856 session_handle, *flags,
2857 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2863 case VPPCOM_ATTR_SET_FLAGS:
2864 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2866 if (*flags & O_NONBLOCK)
2867 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2869 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2871 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2872 " is_nonblocking = %u",
2873 getpid (), session_handle, *flags,
2874 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2880 case VPPCOM_ATTR_GET_PEER_ADDR:
2881 if (PREDICT_TRUE (buffer && buflen &&
2882 (*buflen >= sizeof (*ep)) && ep->ip))
2884 ep->is_ip4 = session->transport.is_ip4;
2885 ep->port = session->transport.rmt_port;
2886 if (session->transport.is_ip4)
2887 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2888 sizeof (ip4_address_t));
2890 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2891 sizeof (ip6_address_t));
2892 *buflen = sizeof (*ep);
2893 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2894 "addr = %U, port %u", getpid (),
2895 session_handle, ep->is_ip4, format_ip46_address,
2896 &session->transport.rmt_ip,
2897 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2898 clib_net_to_host_u16 (ep->port));
2904 case VPPCOM_ATTR_GET_LCL_ADDR:
2905 if (PREDICT_TRUE (buffer && buflen &&
2906 (*buflen >= sizeof (*ep)) && ep->ip))
2908 ep->is_ip4 = session->transport.is_ip4;
2909 ep->port = session->transport.lcl_port;
2910 if (session->transport.is_ip4)
2911 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
2912 sizeof (ip4_address_t));
2914 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
2915 sizeof (ip6_address_t));
2916 *buflen = sizeof (*ep);
2917 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2918 " addr = %U port %d", getpid (),
2919 session_handle, ep->is_ip4, format_ip46_address,
2920 &session->transport.lcl_ip,
2921 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2922 clib_net_to_host_u16 (ep->port));
2928 case VPPCOM_ATTR_GET_LIBC_EPFD:
2929 rv = session->libc_epfd;
2930 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2934 case VPPCOM_ATTR_SET_LIBC_EPFD:
2935 if (PREDICT_TRUE (buffer && buflen &&
2936 (*buflen == sizeof (session->libc_epfd))))
2938 session->libc_epfd = *(int *) buffer;
2939 *buflen = sizeof (session->libc_epfd);
2941 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2942 "buflen %d", getpid (), session->libc_epfd, *buflen);
2948 case VPPCOM_ATTR_GET_PROTOCOL:
2949 if (buffer && buflen && (*buflen >= sizeof (int)))
2951 *(int *) buffer = session->session_type;
2952 *buflen = sizeof (int);
2954 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2955 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
2962 case VPPCOM_ATTR_GET_LISTEN:
2963 if (buffer && buflen && (*buflen >= sizeof (int)))
2965 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2966 VCL_SESS_ATTR_LISTEN);
2967 *buflen = sizeof (int);
2969 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
2970 getpid (), *(int *) buffer, *buflen);
2976 case VPPCOM_ATTR_GET_ERROR:
2977 if (buffer && buflen && (*buflen >= sizeof (int)))
2979 *(int *) buffer = 0;
2980 *buflen = sizeof (int);
2982 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
2983 getpid (), *(int *) buffer, *buflen);
2989 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
2990 if (buffer && buflen && (*buflen >= sizeof (u32)))
2994 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
2995 session->tx_fifo ? session->tx_fifo->nitems :
2996 vcm->cfg.tx_fifo_size);
2997 *buflen = sizeof (u32);
2999 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
3000 "buflen %d, #VPP-TBD#", getpid (),
3001 *(size_t *) buffer, *(size_t *) buffer, *buflen);
3007 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
3008 if (buffer && buflen && (*buflen == sizeof (u32)))
3011 session->sndbuf_size = *(u32 *) buffer;
3012 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
3013 "buflen %d, #VPP-TBD#", getpid (),
3014 session->sndbuf_size, session->sndbuf_size, *buflen);
3020 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
3021 if (buffer && buflen && (*buflen >= sizeof (u32)))
3025 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
3026 session->rx_fifo ? session->rx_fifo->nitems :
3027 vcm->cfg.rx_fifo_size);
3028 *buflen = sizeof (u32);
3030 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
3031 "buflen %d, #VPP-TBD#", getpid (),
3032 *(size_t *) buffer, *(size_t *) buffer, *buflen);
3038 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
3039 if (buffer && buflen && (*buflen == sizeof (u32)))
3042 session->rcvbuf_size = *(u32 *) buffer;
3043 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
3044 "buflen %d, #VPP-TBD#", getpid (),
3045 session->sndbuf_size, session->sndbuf_size, *buflen);
3051 case VPPCOM_ATTR_GET_REUSEADDR:
3052 if (buffer && buflen && (*buflen >= sizeof (int)))
3055 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3056 VCL_SESS_ATTR_REUSEADDR);
3057 *buflen = sizeof (int);
3059 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
3060 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3066 case VPPCOM_ATTR_SET_REUSEADDR:
3067 if (buffer && buflen && (*buflen == sizeof (int)) &&
3068 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3071 if (*(int *) buffer)
3072 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
3074 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
3076 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
3077 " #VPP-TBD#", getpid (),
3078 VCL_SESS_ATTR_TEST (session->attr,
3079 VCL_SESS_ATTR_REUSEADDR), *buflen);
3085 case VPPCOM_ATTR_GET_REUSEPORT:
3086 if (buffer && buflen && (*buflen >= sizeof (int)))
3089 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3090 VCL_SESS_ATTR_REUSEPORT);
3091 *buflen = sizeof (int);
3093 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
3094 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3100 case VPPCOM_ATTR_SET_REUSEPORT:
3101 if (buffer && buflen && (*buflen == sizeof (int)) &&
3102 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3105 if (*(int *) buffer)
3106 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
3108 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
3110 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
3111 " #VPP-TBD#", getpid (),
3112 VCL_SESS_ATTR_TEST (session->attr,
3113 VCL_SESS_ATTR_REUSEPORT), *buflen);
3119 case VPPCOM_ATTR_GET_BROADCAST:
3120 if (buffer && buflen && (*buflen >= sizeof (int)))
3123 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3124 VCL_SESS_ATTR_BROADCAST);
3125 *buflen = sizeof (int);
3127 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
3128 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3134 case VPPCOM_ATTR_SET_BROADCAST:
3135 if (buffer && buflen && (*buflen == sizeof (int)))
3138 if (*(int *) buffer)
3139 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
3141 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
3143 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
3144 "#VPP-TBD#", getpid (),
3145 VCL_SESS_ATTR_TEST (session->attr,
3146 VCL_SESS_ATTR_BROADCAST), *buflen);
3152 case VPPCOM_ATTR_GET_V6ONLY:
3153 if (buffer && buflen && (*buflen >= sizeof (int)))
3156 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3157 VCL_SESS_ATTR_V6ONLY);
3158 *buflen = sizeof (int);
3160 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
3161 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3167 case VPPCOM_ATTR_SET_V6ONLY:
3168 if (buffer && buflen && (*buflen == sizeof (int)))
3171 if (*(int *) buffer)
3172 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3174 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3176 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
3177 "#VPP-TBD#", getpid (),
3178 VCL_SESS_ATTR_TEST (session->attr,
3179 VCL_SESS_ATTR_V6ONLY), *buflen);
3185 case VPPCOM_ATTR_GET_KEEPALIVE:
3186 if (buffer && buflen && (*buflen >= sizeof (int)))
3189 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3190 VCL_SESS_ATTR_KEEPALIVE);
3191 *buflen = sizeof (int);
3193 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3194 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3200 case VPPCOM_ATTR_SET_KEEPALIVE:
3201 if (buffer && buflen && (*buflen == sizeof (int)))
3204 if (*(int *) buffer)
3205 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3207 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3209 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3210 "#VPP-TBD#", getpid (),
3211 VCL_SESS_ATTR_TEST (session->attr,
3212 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3218 case VPPCOM_ATTR_GET_TCP_NODELAY:
3219 if (buffer && buflen && (*buflen >= sizeof (int)))
3222 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3223 VCL_SESS_ATTR_TCP_NODELAY);
3224 *buflen = sizeof (int);
3226 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3227 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3233 case VPPCOM_ATTR_SET_TCP_NODELAY:
3234 if (buffer && buflen && (*buflen == sizeof (int)))
3237 if (*(int *) buffer)
3238 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3240 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3242 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3243 "#VPP-TBD#", getpid (),
3244 VCL_SESS_ATTR_TEST (session->attr,
3245 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3251 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3252 if (buffer && buflen && (*buflen >= sizeof (int)))
3255 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3256 VCL_SESS_ATTR_TCP_KEEPIDLE);
3257 *buflen = sizeof (int);
3259 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3260 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3266 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3267 if (buffer && buflen && (*buflen == sizeof (int)))
3270 if (*(int *) buffer)
3271 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3273 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3275 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3276 "#VPP-TBD#", getpid (),
3277 VCL_SESS_ATTR_TEST (session->attr,
3278 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3284 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3285 if (buffer && buflen && (*buflen >= sizeof (int)))
3288 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3289 VCL_SESS_ATTR_TCP_KEEPINTVL);
3290 *buflen = sizeof (int);
3292 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3293 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3299 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3300 if (buffer && buflen && (*buflen == sizeof (int)))
3303 if (*(int *) buffer)
3304 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3306 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3308 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3309 "#VPP-TBD#", getpid (),
3310 VCL_SESS_ATTR_TEST (session->attr,
3311 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3317 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3318 if (buffer && buflen && (*buflen >= sizeof (u32)))
3321 *(u32 *) buffer = session->user_mss;
3322 *buflen = sizeof (int);
3324 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3325 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3331 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3332 if (buffer && buflen && (*buflen == sizeof (u32)))
3335 session->user_mss = *(u32 *) buffer;
3337 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3338 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3344 case VPPCOM_ATTR_GET_REFCNT:
3345 rv = vcl_session_get_refcnt (session);
3357 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3358 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3360 vcl_worker_t *wrk = vcl_worker_get_current ();
3362 vcl_session_t *session = 0;
3366 session = vcl_session_get_w_handle (wrk, session_handle);
3367 if (PREDICT_FALSE (!session))
3369 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3370 getpid (), session_handle);
3371 return VPPCOM_EBADFD;
3373 ep->is_ip4 = session->transport.is_ip4;
3374 ep->port = session->transport.rmt_port;
3378 rv = vppcom_session_read (session_handle, buffer, buflen);
3379 else if (flags & MSG_PEEK)
3380 rv = vppcom_session_peek (session_handle, buffer, buflen);
3383 clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d",
3385 return VPPCOM_EAFNOSUPPORT;
3390 if (session->transport.is_ip4)
3391 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3392 sizeof (ip4_address_t));
3394 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3395 sizeof (ip6_address_t));
3402 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3403 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3406 return VPPCOM_EINVAL;
3411 return VPPCOM_EINVAL;
3416 // TBD check the flags and do the right thing
3417 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3418 getpid (), flags, flags);
3421 return (vppcom_session_write_inline (session_handle, buffer, buflen, 1));
3425 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3427 vcl_worker_t *wrk = vcl_worker_get_current ();
3428 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3429 u32 i, keep_trying = 1;
3430 svm_msg_q_msg_t msg;
3434 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3435 getpid (), vp, n_sids, wait_for_time);
3438 return VPPCOM_EFAULT;
3442 vcl_session_t *session;
3444 /* Dequeue all events and drop all unhandled io events */
3445 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3447 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3448 vcl_handle_mq_event (wrk, e);
3449 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3451 vec_reset_length (wrk->unhandled_evts_vector);
3453 for (i = 0; i < n_sids; i++)
3455 session = vcl_session_get (wrk, vp[i].sid);
3458 vp[i].revents = POLLHUP;
3465 if (POLLIN & vp[i].events)
3467 rv = vppcom_session_read_ready (session);
3470 vp[i].revents |= POLLIN;
3477 case VPPCOM_ECONNRESET:
3478 vp[i].revents = POLLHUP;
3482 vp[i].revents = POLLERR;
3489 if (POLLOUT & vp[i].events)
3491 rv = vppcom_session_write_ready (session);
3494 vp[i].revents |= POLLOUT;
3501 case VPPCOM_ECONNRESET:
3502 vp[i].revents = POLLHUP;
3506 vp[i].revents = POLLERR;
3513 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3515 vp[i].revents = POLLNVAL;
3519 if (wait_for_time != -1)
3520 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3522 while ((num_ev == 0) && keep_trying);
3524 if (VPPCOM_DEBUG > 3)
3526 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3527 for (i = 0; i < n_sids; i++)
3529 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3530 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3531 vp[i].events, vp[i].revents);
3538 vppcom_mq_epoll_fd (void)
3540 vcl_worker_t *wrk = vcl_worker_get_current ();
3541 return wrk->mqs_epfd;
3545 vppcom_session_index (uint32_t session_handle)
3547 return session_handle & 0xFFFFFF;
3551 vppcom_session_handle (uint32_t session_index)
3553 return (vcl_get_worker_index () << 24) | session_index;
3557 vppcom_worker_register (void)
3559 if (!vcl_worker_alloc_and_init ())
3560 return VPPCOM_EEXIST;
3562 if (vcl_worker_set_bapi ())
3563 return VPPCOM_EEXIST;
3565 if (vcl_worker_register_with_vpp ())
3566 return VPPCOM_EEXIST;
3572 vppcom_worker_index (void)
3574 return vcl_get_worker_index ();
3578 * fd.io coding-style-patch-verification: ON
3581 * eval: (c-set-style "gnu")