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))
1554 vcl_handle_mq_event (wrk, e);
1555 svm_msg_q_free_msg (mq, &msg);
1557 if (PREDICT_FALSE (s->session_state == STATE_DISCONNECT))
1558 return VPPCOM_ECONNRESET;
1563 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1565 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1567 if (svm_fifo_is_empty (rx_fifo))
1568 svm_fifo_unset_event (rx_fifo);
1570 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1572 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1573 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1577 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1578 getpid (), s->vpp_handle, session_handle, n_read, rx_fifo);
1584 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1586 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1590 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1592 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1596 vppcom_session_read_segments (uint32_t session_handle,
1597 vppcom_data_segments_t ds)
1599 vcl_worker_t *wrk = vcl_worker_get_current ();
1600 int n_read = 0, rv, is_nonblocking;
1601 vcl_session_t *s = 0;
1602 svm_fifo_t *rx_fifo;
1603 svm_msg_q_msg_t msg;
1608 s = vcl_session_get_w_handle (wrk, session_handle);
1609 if (PREDICT_FALSE (!s || s->is_vep))
1610 return VPPCOM_EBADFD;
1612 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1614 session_state_t state = s->session_state;
1615 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1619 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1620 is_ct = vcl_session_is_ct (s);
1621 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1622 rx_fifo = s->rx_fifo;
1625 if (svm_fifo_is_empty (rx_fifo))
1629 svm_fifo_unset_event (rx_fifo);
1630 return VPPCOM_EWOULDBLOCK;
1632 while (svm_fifo_is_empty (rx_fifo))
1634 svm_fifo_unset_event (rx_fifo);
1635 svm_msg_q_lock (mq);
1636 if (svm_msg_q_is_empty (mq))
1637 svm_msg_q_wait (mq);
1639 svm_msg_q_sub_w_lock (mq, &msg);
1640 e = svm_msg_q_msg_data (mq, &msg);
1641 svm_msg_q_unlock (mq);
1642 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1643 vcl_handle_mq_event (wrk, e);
1644 svm_msg_q_free_msg (mq, &msg);
1646 if (PREDICT_FALSE (s->session_state == STATE_DISCONNECT))
1647 return VPPCOM_ECONNRESET;
1651 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1652 svm_fifo_unset_event (rx_fifo);
1654 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1656 /* If the peer is not polling send notification */
1657 if (!svm_fifo_has_event (s->rx_fifo))
1658 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1659 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1666 vppcom_session_free_segments (uint32_t session_handle,
1667 vppcom_data_segments_t ds)
1669 vcl_worker_t *wrk = vcl_worker_get_current ();
1672 s = vcl_session_get_w_handle (wrk, session_handle);
1673 if (PREDICT_FALSE (!s || s->is_vep))
1676 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1680 vppcom_session_read_ready (vcl_session_t * session)
1682 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1683 if (PREDICT_FALSE (session->is_vep))
1685 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1686 "epoll session!", getpid (), session->session_index);
1687 return VPPCOM_EBADFD;
1690 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1692 session_state_t state = session->session_state;
1695 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1697 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1698 " state 0x%x (%s), returning %d (%s)", getpid (),
1699 session->vpp_handle, session->session_index, state,
1700 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1704 if (session->session_state & STATE_LISTEN)
1705 return clib_fifo_elts (session->accept_evts_fifo);
1707 return svm_fifo_max_dequeue (session->rx_fifo);
1711 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1713 u32 first_copy = clib_min (ds[0].len, max_bytes);
1714 clib_memcpy_fast (buf, ds[0].data, first_copy);
1715 if (first_copy < max_bytes)
1717 clib_memcpy_fast (buf + first_copy, ds[1].data,
1718 clib_min (ds[1].len, max_bytes - first_copy));
1724 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1727 return (e->event_type == FIFO_EVENT_APP_TX
1728 && e->fifo->client_session_index == sid);
1730 return (e->event_type == SESSION_IO_EVT_CT_RX);
1734 vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
1737 vcl_worker_t *wrk = vcl_worker_get_current ();
1738 int rv, n_write, is_nonblocking;
1739 vcl_session_t *s = 0;
1740 svm_fifo_t *tx_fifo = 0;
1741 session_evt_type_t et;
1742 svm_msg_q_msg_t msg;
1747 if (PREDICT_FALSE (!buf))
1748 return VPPCOM_EINVAL;
1750 s = vcl_session_get_w_handle (wrk, session_handle);
1751 if (PREDICT_FALSE (!s))
1752 return VPPCOM_EBADFD;
1754 if (PREDICT_FALSE (s->is_vep))
1756 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1757 "cannot write to an epoll session!",
1758 getpid (), s->vpp_handle, session_handle);
1760 return VPPCOM_EBADFD;
1763 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1765 session_state_t state = s->session_state;
1766 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1767 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1768 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1769 state, vppcom_session_state_str (state));
1773 tx_fifo = s->tx_fifo;
1774 is_ct = vcl_session_is_ct (s);
1775 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1776 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1777 if (svm_fifo_is_full (tx_fifo))
1781 return VPPCOM_EWOULDBLOCK;
1783 while (svm_fifo_is_full (tx_fifo))
1785 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1786 svm_msg_q_lock (mq);
1787 if (svm_msg_q_is_empty (mq))
1788 svm_msg_q_wait (mq);
1790 svm_msg_q_sub_w_lock (mq, &msg);
1791 e = svm_msg_q_msg_data (mq, &msg);
1792 svm_msg_q_unlock (mq);
1794 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1795 vcl_handle_mq_event (wrk, e);
1796 svm_msg_q_free_msg (mq, &msg);
1798 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1799 return VPPCOM_ECONNRESET;
1803 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1804 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1805 if (is_flush && !vcl_session_is_ct (s))
1806 et = SESSION_IO_EVT_TX_FLUSH;
1809 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1810 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1812 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1815 ASSERT (n_write > 0);
1817 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1818 s->vpp_handle, session_handle, n_write);
1824 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1826 return vppcom_session_write_inline (session_handle, buf, n,
1830 static vcl_session_t *
1831 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1834 s = vcl_session_get (wrk, f->client_session_index);
1838 if (type == 0 && s->rx_fifo == f)
1841 if (type == 1 && s->tx_fifo == f)
1844 s = vcl_session_get (wrk, f->master_session_index);
1847 if (type == 0 && s->rx_fifo == f)
1849 if (type == 1 && s->tx_fifo == f)
1856 vppcom_session_write_ready (vcl_session_t * session)
1858 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1859 if (PREDICT_FALSE (session->is_vep))
1861 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1862 "cannot write to an epoll session!",
1863 getpid (), session->vpp_handle, session->session_index);
1864 return VPPCOM_EBADFD;
1867 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1869 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1870 "cannot write to a listen session!",
1871 getpid (), session->vpp_handle, session->session_index);
1872 return VPPCOM_EBADFD;
1875 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1877 session_state_t state = session->session_state;
1880 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1881 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1882 "session is not open! state 0x%x (%s), "
1883 "returning %d (%s)", getpid (), session->vpp_handle,
1884 session->session_index,
1885 state, vppcom_session_state_str (state),
1886 rv, vppcom_retval_str (rv));
1890 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1891 getpid (), session->vpp_handle, session->session_index,
1892 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1894 return svm_fifo_max_enqueue (session->tx_fifo);
1898 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1900 svm_msg_q_msg_t *msg;
1904 n_msgs = svm_msg_q_size (mq);
1905 for (i = 0; i < n_msgs; i++)
1907 vec_add2 (wrk->mq_msg_vector, msg, 1);
1908 svm_msg_q_sub_w_lock (mq, msg);
1913 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1914 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1916 svm_fifo_unset_event (_fifo); \
1917 if (svm_fifo_is_empty (_fifo)) \
1922 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1923 unsigned long n_bits, unsigned long *read_map,
1924 unsigned long *write_map,
1925 unsigned long *except_map, u32 * bits_set)
1927 session_disconnected_msg_t *disconnected_msg;
1928 session_connected_msg_t *connected_msg;
1929 vcl_session_t *session;
1932 switch (e->event_type)
1934 case FIFO_EVENT_APP_RX:
1935 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1936 sid = e->fifo->client_session_index;
1937 session = vcl_session_get (wrk, sid);
1940 if (sid < n_bits && read_map)
1942 clib_bitmap_set_no_check (read_map, sid, 1);
1946 case FIFO_EVENT_APP_TX:
1947 sid = e->fifo->client_session_index;
1948 session = vcl_session_get (wrk, sid);
1951 if (sid < n_bits && write_map)
1953 clib_bitmap_set_no_check (write_map, sid, 1);
1957 case SESSION_IO_EVT_CT_TX:
1958 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1959 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
1962 sid = session->session_index;
1963 if (sid < n_bits && read_map)
1965 clib_bitmap_set_no_check (read_map, sid, 1);
1969 case SESSION_IO_EVT_CT_RX:
1970 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
1973 sid = session->session_index;
1974 if (sid < n_bits && write_map)
1976 clib_bitmap_set_no_check (write_map, sid, 1);
1980 case SESSION_CTRL_EVT_ACCEPTED:
1981 session = vcl_session_accepted (wrk,
1982 (session_accepted_msg_t *) e->data);
1985 sid = session->session_index;
1986 if (sid < n_bits && read_map)
1988 clib_bitmap_set_no_check (read_map, sid, 1);
1992 case SESSION_CTRL_EVT_CONNECTED:
1993 connected_msg = (session_connected_msg_t *) e->data;
1994 vcl_session_connected_handler (wrk, connected_msg);
1996 case SESSION_CTRL_EVT_DISCONNECTED:
1997 disconnected_msg = (session_disconnected_msg_t *) e->data;
1998 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2001 sid = session->session_index;
2002 if (sid < n_bits && except_map)
2004 clib_bitmap_set_no_check (except_map, sid, 1);
2008 case SESSION_CTRL_EVT_RESET:
2009 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2010 if (sid < n_bits && except_map)
2012 clib_bitmap_set_no_check (except_map, sid, 1);
2017 clib_warning ("unhandled: %u", e->event_type);
2023 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2024 unsigned long n_bits, unsigned long *read_map,
2025 unsigned long *write_map, unsigned long *except_map,
2026 double time_to_wait, u32 * bits_set)
2028 svm_msg_q_msg_t *msg;
2032 svm_msg_q_lock (mq);
2033 if (svm_msg_q_is_empty (mq))
2037 svm_msg_q_unlock (mq);
2043 svm_msg_q_unlock (mq);
2046 else if (time_to_wait < 0)
2048 svm_msg_q_wait (mq);
2052 if (svm_msg_q_timedwait (mq, time_to_wait))
2054 svm_msg_q_unlock (mq);
2059 vcl_mq_dequeue_batch (wrk, mq);
2060 svm_msg_q_unlock (mq);
2062 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2064 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2065 e = svm_msg_q_msg_data (mq, msg);
2066 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
2067 except_map, bits_set);
2068 svm_msg_q_free_msg (mq, msg);
2070 vec_reset_length (wrk->mq_msg_vector);
2075 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
2076 unsigned long *read_map, unsigned long *write_map,
2077 unsigned long *except_map, double time_to_wait,
2080 double total_wait = 0, wait_slice;
2081 vcl_cut_through_registration_t *cr;
2083 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
2084 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
2087 vcl_ct_registration_lock (wrk);
2089 pool_foreach (cr, wrk->cut_through_registrations, ({
2090 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
2094 vcl_ct_registration_unlock (wrk);
2096 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2097 write_map, except_map, time_to_wait, bits_set);
2098 total_wait += wait_slice;
2102 while (total_wait < time_to_wait);
2108 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
2109 unsigned long *read_map, unsigned long *write_map,
2110 unsigned long *except_map, double time_to_wait,
2113 vcl_mq_evt_conn_t *mqc;
2114 int __clib_unused n_read;
2118 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2119 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2120 vec_len (wrk->mq_events), time_to_wait);
2121 for (i = 0; i < n_mq_evts; i++)
2123 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2124 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2125 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2126 except_map, 0, bits_set);
2129 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2133 vppcom_select (unsigned long n_bits, unsigned long *read_map,
2134 unsigned long *write_map, unsigned long *except_map,
2135 double time_to_wait)
2137 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2138 vcl_worker_t *wrk = vcl_worker_get_current ();
2139 vcl_session_t *session = 0;
2142 ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
2144 if (n_bits && read_map)
2146 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2147 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2148 vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2149 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2151 if (n_bits && write_map)
2153 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2154 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2155 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2156 memset (write_map, 0,
2157 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2159 if (n_bits && except_map)
2161 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2162 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2163 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2164 memset (except_map, 0,
2165 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2175 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2176 if (!(session = vcl_session_get (wrk, sid)))
2178 if (except_map && sid < minbits)
2179 clib_bitmap_set_no_check (except_map, sid, 1);
2183 rv = svm_fifo_is_full (session->tx_fifo);
2186 clib_bitmap_set_no_check (write_map, sid, 1);
2195 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2196 if (!(session = vcl_session_get (wrk, sid)))
2198 if (except_map && sid < minbits)
2199 clib_bitmap_set_no_check (except_map, sid, 1);
2203 rv = vppcom_session_read_ready (session);
2206 clib_bitmap_set_no_check (read_map, sid, 1);
2214 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2216 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2217 read_map, write_map, except_map, &bits_set);
2219 vec_reset_length (wrk->unhandled_evts_vector);
2221 if (vcm->cfg.use_mq_eventfd)
2222 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2223 time_to_wait, &bits_set);
2225 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2226 time_to_wait, &bits_set);
2232 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2234 vcl_session_t *session;
2235 vppcom_epoll_t *vep;
2238 if (VPPCOM_DEBUG <= 1)
2241 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2242 session = vcl_session_get (wrk, vep_idx);
2243 if (PREDICT_FALSE (!session))
2245 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2246 getpid (), vep_idx);
2249 if (PREDICT_FALSE (!session->is_vep))
2251 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2252 getpid (), vep_idx);
2255 vep = &session->vep;
2256 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2259 " is_vep_session = %u\n"
2260 " next_sid = 0x%x (%u)\n"
2261 " wait_cont_idx = 0x%x (%u)\n"
2262 "}\n", getpid (), vep_idx,
2263 session->is_vep, session->is_vep_session,
2264 vep->next_sh, vep->next_sh,
2265 session->wait_cont_idx, session->wait_cont_idx);
2267 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2269 session = vcl_session_get (wrk, sid);
2270 if (PREDICT_FALSE (!session))
2272 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2275 if (PREDICT_FALSE (session->is_vep))
2276 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2277 getpid (), vep_idx);
2278 else if (PREDICT_FALSE (!session->is_vep_session))
2280 clib_warning ("VCL<%d>: ERROR: session (%u) "
2281 "is not a vep session!", getpid (), sid);
2284 vep = &session->vep;
2285 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2286 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2287 "vep_idx (%u)!", getpid (),
2288 sid, session->vep.vep_sh, vep_idx);
2289 if (session->is_vep_session)
2291 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2293 " next_sid = 0x%x (%u)\n"
2294 " prev_sid = 0x%x (%u)\n"
2295 " vep_idx = 0x%x (%u)\n"
2296 " ev.events = 0x%x\n"
2297 " ev.data.u64 = 0x%llx\n"
2301 vep->next_sh, vep->next_sh,
2302 vep->prev_sh, vep->prev_sh,
2303 vep->vep_sh, vep->vep_sh,
2304 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2309 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2310 getpid (), vep_idx);
2314 vppcom_epoll_create (void)
2316 vcl_worker_t *wrk = vcl_worker_get_current ();
2317 vcl_session_t *vep_session;
2319 vep_session = vcl_session_alloc (wrk);
2321 vep_session->is_vep = 1;
2322 vep_session->vep.vep_sh = ~0;
2323 vep_session->vep.next_sh = ~0;
2324 vep_session->vep.prev_sh = ~0;
2325 vep_session->wait_cont_idx = ~0;
2326 vep_session->vpp_handle = ~0;
2328 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_sh);
2329 VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!",
2330 getpid (), vep_session->session_index, vep_session->session_index);
2332 return vcl_session_handle (vep_session);
2336 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2337 struct epoll_event *event)
2339 vcl_worker_t *wrk = vcl_worker_get_current ();
2340 vcl_session_t *vep_session;
2341 vcl_session_t *session;
2344 if (vep_handle == session_handle)
2346 clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!",
2347 getpid (), vep_handle);
2348 return VPPCOM_EINVAL;
2351 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2352 if (PREDICT_FALSE (!vep_session))
2354 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_handle);
2355 return VPPCOM_EBADFD;
2357 if (PREDICT_FALSE (!vep_session->is_vep))
2359 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2360 getpid (), vep_handle);
2361 return VPPCOM_EINVAL;
2364 ASSERT (vep_session->vep.vep_sh == ~0);
2365 ASSERT (vep_session->vep.prev_sh == ~0);
2367 session = vcl_session_get_w_handle (wrk, session_handle);
2368 if (PREDICT_FALSE (!session))
2370 VDBG (0, "VCL<%d>: ERROR: Invalid session_handle (%u)!",
2371 getpid (), session_handle);
2372 return VPPCOM_EBADFD;
2374 if (PREDICT_FALSE (session->is_vep))
2376 clib_warning ("ERROR: session_handle (%u) is a vep!", vep_handle);
2377 return VPPCOM_EINVAL;
2383 if (PREDICT_FALSE (!event))
2385 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to "
2386 "epoll_event structure!", getpid ());
2387 return VPPCOM_EINVAL;
2389 if (vep_session->vep.next_sh != ~0)
2391 vcl_session_t *next_session;
2392 next_session = vcl_session_get_w_handle (wrk,
2393 vep_session->vep.next_sh);
2394 if (PREDICT_FALSE (!next_session))
2396 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid "
2397 "vep.next_sid (%u) on vep_idx (%u)!",
2398 getpid (), vep_session->vep.next_sh, vep_handle);
2399 return VPPCOM_EBADFD;
2401 ASSERT (next_session->vep.prev_sh == vep_handle);
2402 next_session->vep.prev_sh = session_handle;
2404 session->vep.next_sh = vep_session->vep.next_sh;
2405 session->vep.prev_sh = vep_handle;
2406 session->vep.vep_sh = vep_handle;
2407 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2408 session->vep.ev = *event;
2409 session->is_vep = 0;
2410 session->is_vep_session = 1;
2411 vep_session->vep.next_sh = session_handle;
2413 VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x, "
2414 "data 0x%llx!", getpid (), vep_handle, session_handle,
2415 event->events, event->data.u64);
2416 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2420 if (PREDICT_FALSE (!event))
2422 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to "
2423 "epoll_event structure!", getpid ());
2427 else if (PREDICT_FALSE (!session->is_vep_session))
2429 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2430 "not a vep session!", getpid (), session_handle);
2434 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2436 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2437 "vep_idx (%u) != vep_idx (%u)!",
2438 getpid (), session_handle,
2439 session->vep.vep_sh, vep_handle);
2443 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2444 session->vep.ev = *event;
2445 VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
2446 " data 0x%llx!", getpid (), vep_handle, session_handle,
2447 event->events, event->data.u64);
2451 if (PREDICT_FALSE (!session->is_vep_session))
2453 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2454 "not a vep session!", getpid (), session_handle);
2458 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2460 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2461 "vep_idx (%u) != vep_idx (%u)!",
2462 getpid (), session_handle,
2463 session->vep.vep_sh, vep_handle);
2468 vep_session->wait_cont_idx =
2469 (vep_session->wait_cont_idx == session_handle) ?
2470 session->vep.next_sh : vep_session->wait_cont_idx;
2472 if (session->vep.prev_sh == vep_handle)
2473 vep_session->vep.next_sh = session->vep.next_sh;
2476 vcl_session_t *prev_session;
2477 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2478 if (PREDICT_FALSE (!prev_session))
2480 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2481 "vep.prev_sid (%u) on sid (%u)!",
2482 getpid (), session->vep.prev_sh, session_handle);
2483 return VPPCOM_EBADFD;
2485 ASSERT (prev_session->vep.next_sh == session_handle);
2486 prev_session->vep.next_sh = session->vep.next_sh;
2488 if (session->vep.next_sh != ~0)
2490 vcl_session_t *next_session;
2491 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2492 if (PREDICT_FALSE (!next_session))
2494 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2495 "vep.next_sid (%u) on sid (%u)!",
2496 getpid (), session->vep.next_sh, session_handle);
2497 return VPPCOM_EBADFD;
2499 ASSERT (next_session->vep.prev_sh == session_handle);
2500 next_session->vep.prev_sh = session->vep.prev_sh;
2503 memset (&session->vep, 0, sizeof (session->vep));
2504 session->vep.next_sh = ~0;
2505 session->vep.prev_sh = ~0;
2506 session->vep.vep_sh = ~0;
2507 session->is_vep_session = 0;
2508 VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!",
2509 getpid (), vep_handle, session_handle);
2510 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2514 clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op);
2518 vep_verify_epoll_chain (wrk, vep_handle);
2525 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2526 struct epoll_event *events, u32 * num_ev)
2528 session_disconnected_msg_t *disconnected_msg;
2529 session_connected_msg_t *connected_msg;
2530 u32 sid = ~0, session_events;
2531 u64 session_evt_data = ~0;
2532 vcl_session_t *session;
2535 switch (e->event_type)
2537 case FIFO_EVENT_APP_RX:
2538 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2539 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2540 sid = e->fifo->client_session_index;
2541 session = vcl_session_get (wrk, sid);
2542 session_events = session->vep.ev.events;
2543 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2546 events[*num_ev].events |= EPOLLIN;
2547 session_evt_data = session->vep.ev.data.u64;
2548 session->has_rx_evt = 1;
2550 case FIFO_EVENT_APP_TX:
2551 sid = e->fifo->client_session_index;
2552 session = vcl_session_get (wrk, sid);
2553 session_events = session->vep.ev.events;
2554 if (!(EPOLLOUT & session_events))
2557 events[*num_ev].events |= EPOLLOUT;
2558 session_evt_data = session->vep.ev.data.u64;
2560 case SESSION_IO_EVT_CT_TX:
2561 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2562 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2563 sid = session->session_index;
2564 session_events = session->vep.ev.events;
2565 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2568 events[*num_ev].events |= EPOLLIN;
2569 session_evt_data = session->vep.ev.data.u64;
2570 session->has_rx_evt = 1;
2572 case SESSION_IO_EVT_CT_RX:
2573 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2574 sid = session->session_index;
2575 session_events = session->vep.ev.events;
2576 if (!(EPOLLOUT & session_events))
2579 events[*num_ev].events |= EPOLLOUT;
2580 session_evt_data = session->vep.ev.data.u64;
2582 case SESSION_CTRL_EVT_ACCEPTED:
2583 session = vcl_session_accepted (wrk,
2584 (session_accepted_msg_t *) e->data);
2588 session_events = session->vep.ev.events;
2589 if (!(EPOLLIN & session_events))
2593 events[*num_ev].events |= EPOLLIN;
2594 session_evt_data = session->vep.ev.data.u64;
2596 case SESSION_CTRL_EVT_CONNECTED:
2597 connected_msg = (session_connected_msg_t *) e->data;
2598 vcl_session_connected_handler (wrk, connected_msg);
2599 /* Generate EPOLLOUT because there's no connected event */
2600 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2601 session = vcl_session_get (wrk, sid);
2602 session_events = session->vep.ev.events;
2603 if (EPOLLOUT & session_events)
2606 events[*num_ev].events |= EPOLLOUT;
2607 session_evt_data = session->vep.ev.data.u64;
2610 case SESSION_CTRL_EVT_DISCONNECTED:
2611 disconnected_msg = (session_disconnected_msg_t *) e->data;
2612 session = vcl_session_disconnected_handler (wrk, disconnected_msg);
2616 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2617 session_evt_data = session->vep.ev.data.u64;
2618 session_events = session->vep.ev.events;
2620 case SESSION_CTRL_EVT_RESET:
2621 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2622 if (!(session = vcl_session_get (wrk, sid)))
2625 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2626 session_evt_data = session->vep.ev.data.u64;
2627 session_events = session->vep.ev.events;
2630 VDBG (0, "unhandled: %u", e->event_type);
2636 events[*num_ev].data.u64 = session_evt_data;
2637 if (EPOLLONESHOT & session_events)
2639 session = vcl_session_get (wrk, sid);
2640 session->vep.ev.events = 0;
2647 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2648 struct epoll_event *events, u32 maxevents,
2649 double wait_for_time, u32 * num_ev)
2651 svm_msg_q_msg_t *msg;
2655 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2656 goto handle_dequeued;
2658 svm_msg_q_lock (mq);
2659 if (svm_msg_q_is_empty (mq))
2663 svm_msg_q_unlock (mq);
2666 else if (wait_for_time < 0)
2668 svm_msg_q_wait (mq);
2672 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2674 svm_msg_q_unlock (mq);
2679 vcl_mq_dequeue_batch (wrk, mq);
2680 svm_msg_q_unlock (mq);
2683 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2685 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2686 e = svm_msg_q_msg_data (mq, msg);
2687 if (*num_ev < maxevents)
2688 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2690 vec_add1 (wrk->unhandled_evts_vector, *e);
2691 svm_msg_q_free_msg (mq, msg);
2693 vec_reset_length (wrk->mq_msg_vector);
2699 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2700 int maxevents, u32 n_evts, double wait_for_time)
2702 vcl_cut_through_registration_t *cr;
2703 double total_wait = 0, wait_slice;
2706 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2707 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2711 vcl_ct_registration_lock (wrk);
2713 pool_foreach (cr, wrk->cut_through_registrations, ({
2714 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2717 vcl_ct_registration_unlock (wrk);
2719 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2720 maxevents, n_evts ? 0 : wait_slice,
2723 total_wait += wait_slice;
2727 while (total_wait < wait_for_time);
2732 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2733 int maxevents, u32 n_evts, double wait_for_time)
2735 vcl_mq_evt_conn_t *mqc;
2736 int __clib_unused n_read;
2740 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2742 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2743 vec_len (wrk->mq_events), wait_for_time);
2744 for (i = 0; i < n_mq_evts; i++)
2746 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2747 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2748 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2750 if (!n_evts && n_mq_evts > 0)
2753 return (int) n_evts;
2757 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2758 int maxevents, double wait_for_time)
2760 vcl_worker_t *wrk = vcl_worker_get_current ();
2761 vcl_session_t *vep_session;
2765 if (PREDICT_FALSE (maxevents <= 0))
2767 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2768 getpid (), maxevents);
2769 return VPPCOM_EINVAL;
2772 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2774 return VPPCOM_EBADFD;
2776 if (PREDICT_FALSE (!vep_session->is_vep))
2778 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2779 getpid (), vep_handle);
2780 return VPPCOM_EINVAL;
2783 memset (events, 0, sizeof (*events) * maxevents);
2785 if (vec_len (wrk->unhandled_evts_vector))
2787 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2789 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2791 if (n_evts == maxevents)
2798 vec_delete (wrk->unhandled_evts_vector, i, 0);
2801 if (vcm->cfg.use_mq_eventfd)
2802 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2805 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2810 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2811 void *buffer, uint32_t * buflen)
2813 vcl_worker_t *wrk = vcl_worker_get_current ();
2814 vcl_session_t *session;
2816 u32 *flags = buffer;
2817 vppcom_endpt_t *ep = buffer;
2819 session = vcl_session_get_w_handle (wrk, session_handle);
2821 return VPPCOM_EBADFD;
2825 case VPPCOM_ATTR_GET_NREAD:
2826 rv = vppcom_session_read_ready (session);
2827 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2831 case VPPCOM_ATTR_GET_NWRITE:
2832 rv = vppcom_session_write_ready (session);
2833 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2834 getpid (), session_handle, rv);
2837 case VPPCOM_ATTR_GET_FLAGS:
2838 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2840 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2841 VCL_SESS_ATTR_NONBLOCK));
2842 *buflen = sizeof (*flags);
2843 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2844 "is_nonblocking = %u", getpid (),
2845 session_handle, *flags,
2846 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2852 case VPPCOM_ATTR_SET_FLAGS:
2853 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2855 if (*flags & O_NONBLOCK)
2856 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2858 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2860 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2861 " is_nonblocking = %u",
2862 getpid (), session_handle, *flags,
2863 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2869 case VPPCOM_ATTR_GET_PEER_ADDR:
2870 if (PREDICT_TRUE (buffer && buflen &&
2871 (*buflen >= sizeof (*ep)) && ep->ip))
2873 ep->is_ip4 = session->transport.is_ip4;
2874 ep->port = session->transport.rmt_port;
2875 if (session->transport.is_ip4)
2876 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2877 sizeof (ip4_address_t));
2879 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2880 sizeof (ip6_address_t));
2881 *buflen = sizeof (*ep);
2882 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2883 "addr = %U, port %u", getpid (),
2884 session_handle, ep->is_ip4, format_ip46_address,
2885 &session->transport.rmt_ip,
2886 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2887 clib_net_to_host_u16 (ep->port));
2893 case VPPCOM_ATTR_GET_LCL_ADDR:
2894 if (PREDICT_TRUE (buffer && buflen &&
2895 (*buflen >= sizeof (*ep)) && ep->ip))
2897 ep->is_ip4 = session->transport.is_ip4;
2898 ep->port = session->transport.lcl_port;
2899 if (session->transport.is_ip4)
2900 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
2901 sizeof (ip4_address_t));
2903 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
2904 sizeof (ip6_address_t));
2905 *buflen = sizeof (*ep);
2906 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2907 " addr = %U port %d", getpid (),
2908 session_handle, ep->is_ip4, format_ip46_address,
2909 &session->transport.lcl_ip,
2910 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2911 clib_net_to_host_u16 (ep->port));
2917 case VPPCOM_ATTR_GET_LIBC_EPFD:
2918 rv = session->libc_epfd;
2919 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2923 case VPPCOM_ATTR_SET_LIBC_EPFD:
2924 if (PREDICT_TRUE (buffer && buflen &&
2925 (*buflen == sizeof (session->libc_epfd))))
2927 session->libc_epfd = *(int *) buffer;
2928 *buflen = sizeof (session->libc_epfd);
2930 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2931 "buflen %d", getpid (), session->libc_epfd, *buflen);
2937 case VPPCOM_ATTR_GET_PROTOCOL:
2938 if (buffer && buflen && (*buflen >= sizeof (int)))
2940 *(int *) buffer = session->session_type;
2941 *buflen = sizeof (int);
2943 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2944 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
2951 case VPPCOM_ATTR_GET_LISTEN:
2952 if (buffer && buflen && (*buflen >= sizeof (int)))
2954 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2955 VCL_SESS_ATTR_LISTEN);
2956 *buflen = sizeof (int);
2958 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
2959 getpid (), *(int *) buffer, *buflen);
2965 case VPPCOM_ATTR_GET_ERROR:
2966 if (buffer && buflen && (*buflen >= sizeof (int)))
2968 *(int *) buffer = 0;
2969 *buflen = sizeof (int);
2971 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
2972 getpid (), *(int *) buffer, *buflen);
2978 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
2979 if (buffer && buflen && (*buflen >= sizeof (u32)))
2983 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
2984 session->tx_fifo ? session->tx_fifo->nitems :
2985 vcm->cfg.tx_fifo_size);
2986 *buflen = sizeof (u32);
2988 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
2989 "buflen %d, #VPP-TBD#", getpid (),
2990 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2996 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
2997 if (buffer && buflen && (*buflen == sizeof (u32)))
3000 session->sndbuf_size = *(u32 *) buffer;
3001 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
3002 "buflen %d, #VPP-TBD#", getpid (),
3003 session->sndbuf_size, session->sndbuf_size, *buflen);
3009 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
3010 if (buffer && buflen && (*buflen >= sizeof (u32)))
3014 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
3015 session->rx_fifo ? session->rx_fifo->nitems :
3016 vcm->cfg.rx_fifo_size);
3017 *buflen = sizeof (u32);
3019 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
3020 "buflen %d, #VPP-TBD#", getpid (),
3021 *(size_t *) buffer, *(size_t *) buffer, *buflen);
3027 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
3028 if (buffer && buflen && (*buflen == sizeof (u32)))
3031 session->rcvbuf_size = *(u32 *) buffer;
3032 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
3033 "buflen %d, #VPP-TBD#", getpid (),
3034 session->sndbuf_size, session->sndbuf_size, *buflen);
3040 case VPPCOM_ATTR_GET_REUSEADDR:
3041 if (buffer && buflen && (*buflen >= sizeof (int)))
3044 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3045 VCL_SESS_ATTR_REUSEADDR);
3046 *buflen = sizeof (int);
3048 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
3049 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3055 case VPPCOM_ATTR_SET_REUSEADDR:
3056 if (buffer && buflen && (*buflen == sizeof (int)) &&
3057 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3060 if (*(int *) buffer)
3061 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
3063 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
3065 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
3066 " #VPP-TBD#", getpid (),
3067 VCL_SESS_ATTR_TEST (session->attr,
3068 VCL_SESS_ATTR_REUSEADDR), *buflen);
3074 case VPPCOM_ATTR_GET_REUSEPORT:
3075 if (buffer && buflen && (*buflen >= sizeof (int)))
3078 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3079 VCL_SESS_ATTR_REUSEPORT);
3080 *buflen = sizeof (int);
3082 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
3083 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3089 case VPPCOM_ATTR_SET_REUSEPORT:
3090 if (buffer && buflen && (*buflen == sizeof (int)) &&
3091 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3094 if (*(int *) buffer)
3095 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
3097 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
3099 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
3100 " #VPP-TBD#", getpid (),
3101 VCL_SESS_ATTR_TEST (session->attr,
3102 VCL_SESS_ATTR_REUSEPORT), *buflen);
3108 case VPPCOM_ATTR_GET_BROADCAST:
3109 if (buffer && buflen && (*buflen >= sizeof (int)))
3112 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3113 VCL_SESS_ATTR_BROADCAST);
3114 *buflen = sizeof (int);
3116 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
3117 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3123 case VPPCOM_ATTR_SET_BROADCAST:
3124 if (buffer && buflen && (*buflen == sizeof (int)))
3127 if (*(int *) buffer)
3128 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
3130 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
3132 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
3133 "#VPP-TBD#", getpid (),
3134 VCL_SESS_ATTR_TEST (session->attr,
3135 VCL_SESS_ATTR_BROADCAST), *buflen);
3141 case VPPCOM_ATTR_GET_V6ONLY:
3142 if (buffer && buflen && (*buflen >= sizeof (int)))
3145 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3146 VCL_SESS_ATTR_V6ONLY);
3147 *buflen = sizeof (int);
3149 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
3150 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3156 case VPPCOM_ATTR_SET_V6ONLY:
3157 if (buffer && buflen && (*buflen == sizeof (int)))
3160 if (*(int *) buffer)
3161 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3163 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3165 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
3166 "#VPP-TBD#", getpid (),
3167 VCL_SESS_ATTR_TEST (session->attr,
3168 VCL_SESS_ATTR_V6ONLY), *buflen);
3174 case VPPCOM_ATTR_GET_KEEPALIVE:
3175 if (buffer && buflen && (*buflen >= sizeof (int)))
3178 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3179 VCL_SESS_ATTR_KEEPALIVE);
3180 *buflen = sizeof (int);
3182 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3183 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3189 case VPPCOM_ATTR_SET_KEEPALIVE:
3190 if (buffer && buflen && (*buflen == sizeof (int)))
3193 if (*(int *) buffer)
3194 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3196 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3198 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3199 "#VPP-TBD#", getpid (),
3200 VCL_SESS_ATTR_TEST (session->attr,
3201 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3207 case VPPCOM_ATTR_GET_TCP_NODELAY:
3208 if (buffer && buflen && (*buflen >= sizeof (int)))
3211 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3212 VCL_SESS_ATTR_TCP_NODELAY);
3213 *buflen = sizeof (int);
3215 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3216 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3222 case VPPCOM_ATTR_SET_TCP_NODELAY:
3223 if (buffer && buflen && (*buflen == sizeof (int)))
3226 if (*(int *) buffer)
3227 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3229 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3231 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3232 "#VPP-TBD#", getpid (),
3233 VCL_SESS_ATTR_TEST (session->attr,
3234 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3240 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3241 if (buffer && buflen && (*buflen >= sizeof (int)))
3244 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3245 VCL_SESS_ATTR_TCP_KEEPIDLE);
3246 *buflen = sizeof (int);
3248 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3249 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3255 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3256 if (buffer && buflen && (*buflen == sizeof (int)))
3259 if (*(int *) buffer)
3260 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3262 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3264 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3265 "#VPP-TBD#", getpid (),
3266 VCL_SESS_ATTR_TEST (session->attr,
3267 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3273 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3274 if (buffer && buflen && (*buflen >= sizeof (int)))
3277 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3278 VCL_SESS_ATTR_TCP_KEEPINTVL);
3279 *buflen = sizeof (int);
3281 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3282 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3288 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3289 if (buffer && buflen && (*buflen == sizeof (int)))
3292 if (*(int *) buffer)
3293 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3295 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3297 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3298 "#VPP-TBD#", getpid (),
3299 VCL_SESS_ATTR_TEST (session->attr,
3300 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3306 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3307 if (buffer && buflen && (*buflen >= sizeof (u32)))
3310 *(u32 *) buffer = session->user_mss;
3311 *buflen = sizeof (int);
3313 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3314 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3320 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3321 if (buffer && buflen && (*buflen == sizeof (u32)))
3324 session->user_mss = *(u32 *) buffer;
3326 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3327 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3333 case VPPCOM_ATTR_GET_REFCNT:
3334 rv = vcl_session_get_refcnt (session);
3346 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3347 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3349 vcl_worker_t *wrk = vcl_worker_get_current ();
3351 vcl_session_t *session = 0;
3355 session = vcl_session_get_w_handle (wrk, session_handle);
3356 if (PREDICT_FALSE (!session))
3358 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3359 getpid (), session_handle);
3360 return VPPCOM_EBADFD;
3362 ep->is_ip4 = session->transport.is_ip4;
3363 ep->port = session->transport.rmt_port;
3367 rv = vppcom_session_read (session_handle, buffer, buflen);
3368 else if (flags & MSG_PEEK)
3369 rv = vppcom_session_peek (session_handle, buffer, buflen);
3372 clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d",
3374 return VPPCOM_EAFNOSUPPORT;
3379 if (session->transport.is_ip4)
3380 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3381 sizeof (ip4_address_t));
3383 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3384 sizeof (ip6_address_t));
3391 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3392 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3395 return VPPCOM_EINVAL;
3400 return VPPCOM_EINVAL;
3405 // TBD check the flags and do the right thing
3406 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3407 getpid (), flags, flags);
3410 return (vppcom_session_write_inline (session_handle, buffer, buflen, 1));
3414 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3416 vcl_worker_t *wrk = vcl_worker_get_current ();
3417 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3418 u32 i, keep_trying = 1;
3419 svm_msg_q_msg_t msg;
3423 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3424 getpid (), vp, n_sids, wait_for_time);
3427 return VPPCOM_EFAULT;
3431 vcl_session_t *session;
3433 /* Dequeue all events and drop all unhandled io events */
3434 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3436 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3437 vcl_handle_mq_event (wrk, e);
3438 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3440 vec_reset_length (wrk->unhandled_evts_vector);
3442 for (i = 0; i < n_sids; i++)
3444 session = vcl_session_get (wrk, vp[i].sid);
3447 vp[i].revents = POLLHUP;
3454 if (POLLIN & vp[i].events)
3456 rv = vppcom_session_read_ready (session);
3459 vp[i].revents |= POLLIN;
3466 case VPPCOM_ECONNRESET:
3467 vp[i].revents = POLLHUP;
3471 vp[i].revents = POLLERR;
3478 if (POLLOUT & vp[i].events)
3480 rv = vppcom_session_write_ready (session);
3483 vp[i].revents |= POLLOUT;
3490 case VPPCOM_ECONNRESET:
3491 vp[i].revents = POLLHUP;
3495 vp[i].revents = POLLERR;
3502 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3504 vp[i].revents = POLLNVAL;
3508 if (wait_for_time != -1)
3509 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3511 while ((num_ev == 0) && keep_trying);
3513 if (VPPCOM_DEBUG > 3)
3515 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3516 for (i = 0; i < n_sids; i++)
3518 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3519 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3520 vp[i].events, vp[i].revents);
3527 vppcom_mq_epoll_fd (void)
3529 vcl_worker_t *wrk = vcl_worker_get_current ();
3530 return wrk->mqs_epfd;
3534 vppcom_session_index (uint32_t session_handle)
3536 return session_handle & 0xFFFFFF;
3540 vppcom_session_handle (uint32_t session_index)
3542 return (vcl_get_worker_index () << 24) | session_index;
3546 vppcom_worker_register (void)
3548 if (!vcl_worker_alloc_and_init ())
3549 return VPPCOM_EEXIST;
3551 if (vcl_worker_set_bapi ())
3552 return VPPCOM_EEXIST;
3554 if (vcl_worker_register_with_vpp ())
3555 return VPPCOM_EEXIST;
3561 vppcom_worker_index (void)
3563 return vcl_get_worker_index ();
3567 * fd.io coding-style-patch-verification: ON
3570 * eval: (c-set-style "gnu")