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_CLOSE_ON_EMPTY:
71 st = "STATE_CLOSE_ON_EMPTY";
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->tx_fifo->master_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->client_context = mp->context;
293 session->rx_fifo = rx_fifo;
294 session->tx_fifo = tx_fifo;
296 session->session_state = STATE_ACCEPT;
297 session->transport.rmt_port = mp->port;
298 session->transport.is_ip4 = mp->is_ip4;
299 clib_memcpy_fast (&session->transport.rmt_ip, mp->ip,
300 sizeof (ip46_address_t));
302 vcl_session_table_add_vpp_handle (wrk, mp->handle, session->session_index);
303 session->transport.lcl_port = listen_session->transport.lcl_port;
304 session->transport.lcl_ip = listen_session->transport.lcl_ip;
305 session->session_type = listen_session->session_type;
306 session->is_dgram = session->session_type == VPPCOM_PROTO_UDP;
308 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: client accept request from %s"
309 " address %U port %d queue %p!", getpid (), mp->handle,
310 session->session_index,
311 mp->is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &mp->ip,
312 mp->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
313 clib_net_to_host_u16 (mp->port), session->vpp_evt_q);
314 vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index);
316 return session->session_index;
320 vcl_session_connected_handler (vcl_worker_t * wrk,
321 session_connected_msg_t * mp)
323 u32 session_index, vpp_wrk_index;
324 svm_fifo_t *rx_fifo, *tx_fifo;
325 vcl_session_t *session = 0;
328 session_index = mp->context;
329 session = vcl_session_get (wrk, session_index);
332 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
333 "Invalid session index (%u)!",
334 getpid (), mp->handle, session_index);
335 return VCL_INVALID_SESSION_INDEX;
339 clib_warning ("VCL<%d>: ERROR: sid %u: connect failed! %U", getpid (),
340 session_index, format_api_error, ntohl (mp->retval));
341 session->session_state = STATE_FAILED;
342 session->vpp_handle = mp->handle;
343 return session_index;
346 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
347 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
348 if (vcl_wait_for_segment (mp->segment_handle))
350 clib_warning ("segment for session %u couldn't be mounted!",
351 session->session_index);
352 return VCL_INVALID_SESSION_INDEX;
355 rx_fifo->client_session_index = session_index;
356 tx_fifo->client_session_index = session_index;
357 rx_fifo->client_thread_index = vcl_get_worker_index ();
358 tx_fifo->client_thread_index = vcl_get_worker_index ();
360 if (mp->client_event_queue_address)
362 session->vpp_evt_q = uword_to_pointer (mp->server_event_queue_address,
364 session->our_evt_q = uword_to_pointer (mp->client_event_queue_address,
367 vec_validate (wrk->vpp_event_queues, 0);
368 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
369 wrk->vpp_event_queues[0] = evt_q;
373 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
375 vpp_wrk_index = tx_fifo->master_thread_index;
376 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
377 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
380 session->rx_fifo = rx_fifo;
381 session->tx_fifo = tx_fifo;
382 session->vpp_handle = mp->handle;
383 session->transport.is_ip4 = mp->is_ip4;
384 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
385 sizeof (session->transport.lcl_ip));
386 session->transport.lcl_port = mp->lcl_port;
387 session->session_state = STATE_CONNECT;
389 /* Add it to lookup table */
390 hash_set (wrk->session_index_by_vpp_handles, mp->handle, session_index);
392 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: connect succeeded! "
393 "session_rx_fifo %p, refcnt %d, session_tx_fifo %p, refcnt %d",
394 getpid (), mp->handle, session_index, session->rx_fifo,
395 session->rx_fifo->refcnt, session->tx_fifo, session->tx_fifo->refcnt);
397 return session_index;
401 vcl_session_reset_handler (vcl_worker_t * wrk,
402 session_reset_msg_t * reset_msg)
404 vcl_session_t *session;
407 sid = vcl_session_index_from_vpp_handle (wrk, reset_msg->handle);
408 session = vcl_session_get (wrk, sid);
411 VDBG (0, "request to reset unknown handle 0x%llx", reset_msg->handle);
412 return VCL_INVALID_SESSION_INDEX;
414 session->session_state = STATE_CLOSE_ON_EMPTY;
415 VDBG (0, "reset handle 0x%llx, sid %u ", reset_msg->handle, sid);
416 vcl_send_session_reset_reply (vcl_session_vpp_evt_q (wrk, session),
417 wrk->my_client_index, reset_msg->handle, 0);
422 vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp)
424 vcl_session_t *session;
425 u32 sid = mp->context;
427 session = vcl_session_get (wrk, sid);
430 VERR ("vpp handle 0x%llx, sid %u: bind failed: %U", mp->handle, sid,
431 format_api_error, mp->retval);
434 session->session_state = STATE_FAILED;
435 session->vpp_handle = mp->handle;
440 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
441 "Invalid session index (%u)!",
442 getpid (), mp->handle, sid);
443 return VCL_INVALID_SESSION_INDEX;
447 session->vpp_handle = mp->handle;
448 session->transport.is_ip4 = mp->lcl_is_ip4;
449 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
450 sizeof (ip46_address_t));
451 session->transport.lcl_port = mp->lcl_port;
452 vcl_session_table_add_listener (wrk, mp->handle, sid);
453 session->session_state = STATE_LISTEN;
455 if (session->is_dgram)
457 svm_fifo_t *rx_fifo, *tx_fifo;
458 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
459 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
460 rx_fifo->client_session_index = sid;
461 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
462 tx_fifo->client_session_index = sid;
463 session->rx_fifo = rx_fifo;
464 session->tx_fifo = tx_fifo;
467 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: bind succeeded!",
468 getpid (), mp->handle, sid);
473 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
475 session_accepted_msg_t *accepted_msg;
476 session_disconnected_msg_t *disconnected_msg;
477 vcl_session_msg_t *vcl_msg;
478 vcl_session_t *session;
482 switch (e->event_type)
484 case FIFO_EVENT_APP_RX:
485 case FIFO_EVENT_APP_TX:
486 case SESSION_IO_EVT_CT_RX:
487 case SESSION_IO_EVT_CT_TX:
488 vec_add1 (wrk->unhandled_evts_vector, *e);
490 case SESSION_CTRL_EVT_ACCEPTED:
491 accepted_msg = (session_accepted_msg_t *) e->data;
492 handle = accepted_msg->listener_handle;
493 session = vcl_session_table_lookup_listener (wrk, handle);
496 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
497 "listener handle %llx", getpid (), handle);
501 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
502 vcl_msg->accepted_msg = *accepted_msg;
504 case SESSION_CTRL_EVT_CONNECTED:
505 vcl_session_connected_handler (wrk,
506 (session_connected_msg_t *) e->data);
508 case SESSION_CTRL_EVT_DISCONNECTED:
509 disconnected_msg = (session_disconnected_msg_t *) e->data;
510 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
511 session = vcl_session_get (wrk, sid);
514 VDBG (0, "request to disconnect unknown handle 0x%llx",
515 disconnected_msg->handle);
518 session->session_state = STATE_DISCONNECT;
519 VDBG (0, "disconnected handle 0x%llx, sid %u", disconnected_msg->handle,
522 case SESSION_CTRL_EVT_RESET:
523 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
525 case SESSION_CTRL_EVT_BOUND:
526 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
529 clib_warning ("unhandled %u", e->event_type);
535 vppcom_wait_for_session_state_change (u32 session_index,
536 session_state_t state,
539 vcl_worker_t *wrk = vcl_worker_get_current ();
540 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
541 vcl_session_t *volatile session;
547 session = vcl_session_get (wrk, session_index);
548 if (PREDICT_FALSE (!session))
550 return VPPCOM_EBADFD;
552 if (session->session_state & state)
556 if (session->session_state & STATE_FAILED)
558 return VPPCOM_ECONNREFUSED;
561 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
566 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
567 vcl_handle_mq_event (wrk, e);
568 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
570 while (clib_time_now (&wrk->clib_time) < timeout);
572 VDBG (0, "VCL<%d>: timeout waiting for state 0x%x (%s)", getpid (), state,
573 vppcom_session_state_str (state));
574 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
576 return VPPCOM_ETIMEDOUT;
580 vppcom_app_session_enable (void)
584 if (vcm->app_state != STATE_APP_ENABLED)
586 vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
587 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
588 if (PREDICT_FALSE (rv))
590 VDBG (0, "VCL<%d>: application session enable timed out! "
591 "returning %d (%s)", getpid (), rv, vppcom_retval_str (rv));
599 vppcom_app_attach (void)
603 vppcom_app_send_attach ();
604 rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED);
605 if (PREDICT_FALSE (rv))
607 VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)",
608 getpid (), rv, vppcom_retval_str (rv));
616 vppcom_session_unbind (u32 session_handle)
618 vcl_worker_t *wrk = vcl_worker_get_current ();
619 vcl_session_t *session = 0;
622 session = vcl_session_get_w_handle (wrk, session_handle);
624 return VPPCOM_EBADFD;
626 vpp_handle = session->vpp_handle;
627 vcl_session_table_del_listener (wrk, vpp_handle);
628 session->vpp_handle = ~0;
629 session->session_state = STATE_DISCONNECT;
631 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state"
632 " 0x%x (%s)", getpid (), vpp_handle, session_handle, STATE_DISCONNECT,
633 vppcom_session_state_str (STATE_DISCONNECT));
634 vcl_evt (VCL_EVT_UNBIND, session);
635 vppcom_send_unbind_sock (vpp_handle);
641 vppcom_session_disconnect (u32 session_handle)
643 vcl_worker_t *wrk = vcl_worker_get_current ();
644 svm_msg_q_t *vpp_evt_q;
645 vcl_session_t *session;
646 session_state_t state;
649 session = vcl_session_get_w_handle (wrk, session_handle);
651 return VPPCOM_EBADFD;
653 vpp_handle = session->vpp_handle;
654 state = session->session_state;
656 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (),
657 vpp_handle, session_handle, state, vppcom_session_state_str (state));
659 if (PREDICT_FALSE (state & STATE_LISTEN))
661 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
662 "Cannot disconnect a listen socket!",
663 getpid (), vpp_handle, session_handle);
664 return VPPCOM_EBADFD;
667 if (state & STATE_CLOSE_ON_EMPTY)
669 vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
670 vcl_send_session_disconnected_reply (vpp_evt_q, wrk->my_client_index,
672 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect "
673 "REPLY...", getpid (), vpp_handle, session_handle);
677 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...",
678 getpid (), vpp_handle, session_handle);
679 vppcom_send_disconnect_session (vpp_handle);
686 vcl_cleanup_bapi (void)
688 socket_client_main_t *scm = &socket_client_main;
689 api_main_t *am = &api_main;
691 am->my_client_index = ~0;
692 am->my_registration = 0;
693 am->vl_input_queue = 0;
694 am->msg_index_by_name_and_crc = 0;
697 vl_client_api_unmap ();
701 vcl_app_fork_child_handler (void)
706 parent_wrk = vcl_get_worker_index ();
707 VDBG (0, "initializing forked child with parent wrk %u", parent_wrk);
712 vcl_set_worker_index (~0);
713 if (!vcl_worker_alloc_and_init ())
714 VERR ("couldn't allocate new worker");
717 * Attach to binary api
719 child_name = format (0, "%v-child-%u%c", vcm->app_name, getpid (), 0);
721 vppcom_api_hookup ();
722 vcm->app_state = STATE_APP_START;
723 rv = vppcom_connect_to_vpp ((char *) child_name);
724 vec_free (child_name);
727 VERR ("couldn't connect to VPP!");
732 * Register worker with vpp and share sessions
734 vcl_worker_register_with_vpp ();
735 vcl_worker_share_sessions (parent_wrk);
737 VDBG (0, "forked child main worker initialized");
742 vcl_app_fork_parent_handler (void)
753 * Notify vpp of the disconnect and mark the worker as free. If we're the
754 * last worker, do a full cleanup otherwise, since we're probably a forked
755 * child, avoid syscalls as much as possible. We might've lost privileges.
758 vppcom_app_exit (void)
760 if (!pool_elts (vcm->workers))
763 vcl_worker_cleanup (1 /* notify vpp */ );
765 if (vec_len (vcm->workers) == 1)
766 vl_client_disconnect_from_vlib ();
768 vl_client_send_disconnect ();
772 * VPPCOM Public API functions
775 vppcom_app_create (char *app_name)
777 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
782 clib_warning ("vcl<%u> already initialized", getpid ());
787 vppcom_cfg (&vcm->cfg);
790 vcm->main_cpu = pthread_self ();
791 vcm->main_pid = getpid ();
792 vcm->app_name = format (0, "%s", app_name);
793 vppcom_init_error_string_table ();
794 svm_fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva,
795 20 /* timeout in secs */ );
796 pool_alloc (vcm->workers, vcl_cfg->max_workers);
797 clib_spinlock_init (&vcm->workers_lock);
798 clib_rwlock_init (&vcm->segment_table_lock);
799 pthread_atfork (NULL, vcl_app_fork_parent_handler,
800 vcl_app_fork_child_handler);
801 atexit (vppcom_app_exit);
803 /* Allocate default worker */
804 vcl_worker_alloc_and_init ();
806 /* API hookup and connect to VPP */
807 vppcom_api_hookup ();
809 vcm->app_state = STATE_APP_START;
810 rv = vppcom_connect_to_vpp (app_name);
813 VERR ("couldn't connect to VPP!");
816 VDBG (0, "sending session enable");
817 rv = vppcom_app_session_enable ();
820 VERR ("vppcom_app_session_enable() failed!");
824 VDBG (0, "sending app attach");
825 rv = vppcom_app_attach ();
828 VERR ("vppcom_app_attach() failed!");
832 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
833 vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
839 vppcom_app_destroy (void)
842 f64 orig_app_timeout;
844 if (!pool_elts (vcm->workers))
847 vcl_evt (VCL_EVT_DETACH, vcm);
849 if (pool_elts (vcm->workers) == 1)
851 vppcom_app_send_detach ();
852 orig_app_timeout = vcm->cfg.app_timeout;
853 vcm->cfg.app_timeout = 2.0;
854 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
855 vcm->cfg.app_timeout = orig_app_timeout;
856 if (PREDICT_FALSE (rv))
857 VDBG (0, "application detach timed out! returning %d (%s)", rv,
858 vppcom_retval_str (rv));
859 vec_free (vcm->app_name);
860 vcl_worker_cleanup (0 /* notify vpp */ );
864 vcl_worker_cleanup (1 /* notify vpp */ );
868 vl_client_disconnect_from_vlib ();
872 vppcom_session_create (u8 proto, u8 is_nonblocking)
874 vcl_worker_t *wrk = vcl_worker_get_current ();
875 vcl_session_t *session;
877 session = vcl_session_alloc (wrk);
879 session->session_type = proto;
880 session->session_state = STATE_START;
881 session->vpp_handle = ~0;
882 session->is_dgram = proto == VPPCOM_PROTO_UDP;
885 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
887 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
888 is_nonblocking, session_index);
890 VDBG (0, "created sid %u", session->session_index);
892 return vcl_session_handle (session);
896 vppcom_session_close (uint32_t session_handle)
898 vcl_worker_t *wrk = vcl_worker_get_current ();
899 u8 is_vep, do_disconnect = 1;
900 vcl_session_t *session = 0;
901 session_state_t state;
906 session = vcl_session_get_w_handle (wrk, session_handle);
908 return VPPCOM_EBADFD;
910 if (session->shared_index != ~0)
911 do_disconnect = vcl_worker_unshare_session (wrk, session);
913 is_vep = session->is_vep;
914 next_sh = session->vep.next_sh;
915 vep_sh = session->vep.vep_sh;
916 state = session->session_state;
917 vpp_handle = session->vpp_handle;
919 VDBG (0, "Closing session handle %u vpp handle %u", session_handle,
924 while (next_sh != ~0)
926 rv = vppcom_epoll_ctl (session_handle, EPOLL_CTL_DEL, next_sh, 0);
927 if (PREDICT_FALSE (rv < 0))
928 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u"
929 " failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
930 vppcom_retval_str (rv));
932 next_sh = session->vep.next_sh;
937 if (session->is_vep_session)
939 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, session_handle, 0);
941 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u "
942 "failed! rv %d (%s)", vpp_handle, session_handle, vep_sh,
943 rv, vppcom_retval_str (rv));
949 if (state & STATE_LISTEN)
951 rv = vppcom_session_unbind (session_handle);
952 if (PREDICT_FALSE (rv < 0))
953 VDBG (0, "vpp handle 0x%llx, sid %u: listener unbind failed! "
954 "rv %d (%s)", vpp_handle, session_handle, rv,
955 vppcom_retval_str (rv));
957 else if (state & STATE_OPEN)
959 rv = vppcom_session_disconnect (session_handle);
960 if (PREDICT_FALSE (rv < 0))
961 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
962 "session disconnect failed! rv %d (%s)",
963 getpid (), vpp_handle, session_handle,
964 rv, vppcom_retval_str (rv));
970 if (vcl_session_is_ct (session))
972 vcl_cut_through_registration_t *ctr;
975 mq_addr = pointer_to_uword (session->our_evt_q);
976 ctr = vcl_ct_registration_lock_and_lookup (wrk, mq_addr);
978 if (ctr->epoll_evt_conn_index != ~0)
979 vcl_mq_epoll_del_evfd (wrk, ctr->epoll_evt_conn_index);
980 VDBG (0, "Removing ct registration %u",
981 vcl_ct_registration_index (wrk, ctr));
982 vcl_ct_registration_del (wrk, ctr);
983 vcl_ct_registration_lookup_del (wrk, mq_addr);
984 vcl_ct_registration_unlock (wrk);
987 if (vpp_handle != ~0)
989 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
991 vcl_session_free (wrk, session);
993 VDBG (0, "session handle %u vpp handle %u removed", session_handle,
996 vcl_evt (VCL_EVT_CLOSE, session, rv);
1002 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1004 vcl_worker_t *wrk = vcl_worker_get_current ();
1005 vcl_session_t *session = 0;
1008 return VPPCOM_EINVAL;
1010 session = vcl_session_get_w_handle (wrk, session_handle);
1012 return VPPCOM_EBADFD;
1014 if (session->is_vep)
1016 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1017 "bind to an epoll session!", getpid (), session_handle);
1018 return VPPCOM_EBADFD;
1021 session->transport.is_ip4 = ep->is_ip4;
1023 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1024 sizeof (ip4_address_t));
1026 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1027 sizeof (ip6_address_t));
1028 session->transport.lcl_port = ep->port;
1030 VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
1031 "proto %s", getpid (), session_handle,
1032 session->transport.is_ip4 ? "IPv4" : "IPv6",
1033 format_ip46_address, &session->transport.lcl_ip,
1034 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1035 clib_net_to_host_u16 (session->transport.lcl_port),
1036 session->session_type ? "UDP" : "TCP");
1037 vcl_evt (VCL_EVT_BIND, session);
1039 if (session->session_type == VPPCOM_PROTO_UDP)
1040 vppcom_session_listen (session_handle, 10);
1046 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1048 vcl_worker_t *wrk = vcl_worker_get_current ();
1049 vcl_session_t *listen_session = 0;
1050 u64 listen_vpp_handle;
1053 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1054 if (!listen_session)
1055 return VPPCOM_EBADFD;
1057 if (q_len == 0 || q_len == ~0)
1058 q_len = vcm->cfg.listen_queue_size;
1060 if (listen_session->is_vep)
1062 clib_warning ("VCL<%d>: ERROR: sid %u: cannot listen on an "
1063 "epoll session!", getpid (), listen_sh);
1064 return VPPCOM_EBADFD;
1067 listen_vpp_handle = listen_session->vpp_handle;
1068 if (listen_session->session_state & STATE_LISTEN)
1070 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: already in listen state!",
1071 getpid (), listen_vpp_handle, listen_sh);
1075 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: sending VPP bind+listen "
1076 "request...", getpid (), listen_vpp_handle, listen_sh);
1079 * Send listen request to vpp and wait for reply
1081 vppcom_send_bind_sock (listen_session);
1082 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1084 vcm->cfg.session_timeout);
1086 if (PREDICT_FALSE (rv))
1088 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1089 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: bind+listen failed! "
1090 "returning %d (%s)", getpid (), listen_session->vpp_handle,
1091 listen_sh, rv, vppcom_retval_str (rv));
1099 validate_args_session_accept_ (vcl_worker_t * wrk,
1100 vcl_session_t * listen_session)
1102 /* Input validation - expects spinlock on sessions_lockp */
1103 if (listen_session->is_vep)
1105 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1106 "epoll session!", getpid (),
1107 listen_session->session_index);
1108 return VPPCOM_EBADFD;
1111 if (listen_session->session_state != STATE_LISTEN)
1113 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1114 "not in listen state! state 0x%x (%s)", getpid (),
1115 listen_session->vpp_handle, listen_session->session_index,
1116 listen_session->session_state,
1117 vppcom_session_state_str (listen_session->session_state));
1118 return VPPCOM_EBADFD;
1124 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1127 u32 client_session_index = ~0, listen_session_index;
1128 vcl_worker_t *wrk = vcl_worker_get_current ();
1129 session_accepted_msg_t accepted_msg;
1130 vcl_session_t *listen_session = 0;
1131 vcl_session_t *client_session = 0;
1132 svm_msg_q_t *vpp_evt_q;
1133 vcl_session_msg_t *evt;
1134 u64 listen_vpp_handle;
1135 svm_msg_q_msg_t msg;
1140 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1141 if (!listen_session)
1142 return VPPCOM_EBADFD;
1144 listen_session_index = listen_session->session_index;
1145 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1148 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1150 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1151 accepted_msg = evt->accepted_msg;
1155 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1156 VCL_SESS_ATTR_NONBLOCK);
1157 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1158 return VPPCOM_EAGAIN;
1162 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1163 return VPPCOM_EAGAIN;
1165 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1166 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1168 clib_warning ("discarded event: %u", e->event_type);
1169 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1172 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1173 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1179 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1180 listen_session = vcl_session_get (wrk, listen_session_index);
1181 client_session = vcl_session_get (wrk, client_session_index);
1183 if (flags & O_NONBLOCK)
1184 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1186 listen_vpp_handle = listen_session->vpp_handle;
1187 VDBG (0, "vpp handle 0x%llx, sid %u: Got a client request! "
1188 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1189 listen_vpp_handle, listen_session_handle,
1190 client_session->vpp_handle, client_session_index,
1191 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1192 VCL_SESS_ATTR_NONBLOCK));
1196 ep->is_ip4 = client_session->transport.is_ip4;
1197 ep->port = client_session->transport.rmt_port;
1198 if (client_session->transport.is_ip4)
1199 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1200 sizeof (ip4_address_t));
1202 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1203 sizeof (ip6_address_t));
1206 if (accepted_msg.server_event_queue_address)
1207 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1210 vpp_evt_q = client_session->vpp_evt_q;
1212 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1213 client_session->vpp_handle, 0);
1215 VDBG (0, "vpp handle 0x%llx, sid %u: accepted vpp handle 0x%llx, "
1216 "sid %u connection from peer %s address %U port %u to local %s "
1217 "address %U port %u", listen_vpp_handle,
1218 listen_session_handle, client_session->vpp_handle,
1219 client_session_index,
1220 client_session->transport.is_ip4 ? "IPv4" : "IPv6",
1221 format_ip46_address, &client_session->transport.rmt_ip,
1222 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1223 clib_net_to_host_u16 (client_session->transport.rmt_port),
1224 client_session->transport.is_ip4 ? "IPv4" : "IPv6",
1225 format_ip46_address, &client_session->transport.lcl_ip,
1226 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1227 clib_net_to_host_u16 (client_session->transport.lcl_port));
1228 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1229 client_session_index);
1231 return vcl_session_handle (client_session);
1235 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1237 vcl_worker_t *wrk = vcl_worker_get_current ();
1238 vcl_session_t *session = 0;
1242 session = vcl_session_get_w_handle (wrk, session_handle);
1244 return VPPCOM_EBADFD;
1245 session_index = session->session_index;
1247 if (PREDICT_FALSE (session->is_vep))
1249 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1250 "connect on an epoll session!", getpid (),
1252 return VPPCOM_EBADFD;
1255 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1257 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
1258 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1259 getpid (), session->vpp_handle, session_handle,
1260 session->transport.is_ip4 ? "IPv4" : "IPv6",
1261 format_ip46_address,
1262 &session->transport.rmt_ip, session->transport.is_ip4 ?
1263 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1264 clib_net_to_host_u16 (session->transport.rmt_port),
1265 session->session_type ? "UDP" : "TCP", session->session_state,
1266 vppcom_session_state_str (session->session_state));
1270 session->transport.is_ip4 = server_ep->is_ip4;
1271 if (session->transport.is_ip4)
1272 clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
1273 sizeof (ip4_address_t));
1275 clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
1276 sizeof (ip6_address_t));
1277 session->transport.rmt_port = server_ep->port;
1279 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
1281 getpid (), session->vpp_handle, session_handle,
1282 session->transport.is_ip4 ? "IPv4" : "IPv6",
1283 format_ip46_address,
1284 &session->transport.rmt_ip, session->transport.is_ip4 ?
1285 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1286 clib_net_to_host_u16 (session->transport.rmt_port),
1287 session->session_type ? "UDP" : "TCP");
1290 * Send connect request and wait for reply from vpp
1292 vppcom_send_connect_sock (session);
1293 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1294 vcm->cfg.session_timeout);
1296 session = vcl_session_get (wrk, session_index);
1298 if (PREDICT_FALSE (rv))
1300 if (VPPCOM_DEBUG > 0)
1303 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1304 "failed! returning %d (%s)", getpid (),
1305 session->vpp_handle, session_handle, rv,
1306 vppcom_retval_str (rv));
1308 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1309 "returning %d (%s)", getpid (),
1310 session_handle, rv, vppcom_retval_str (rv));
1314 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1315 getpid (), session->vpp_handle, session_handle);
1321 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1324 return (e->event_type == FIFO_EVENT_APP_RX
1325 && e->fifo->client_session_index == sid);
1327 return (e->event_type == SESSION_IO_EVT_CT_TX);
1331 vcl_session_is_readable (vcl_session_t * s)
1333 return ((s->session_state & STATE_OPEN)
1334 || (s->session_state == STATE_LISTEN
1335 && s->session_type == VPPCOM_PROTO_UDP));
1339 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1342 vcl_worker_t *wrk = vcl_worker_get_current ();
1343 int n_read = 0, rv, is_nonblocking;
1344 vcl_session_t *s = 0;
1345 svm_fifo_t *rx_fifo;
1346 svm_msg_q_msg_t msg;
1351 if (PREDICT_FALSE (!buf))
1352 return VPPCOM_EINVAL;
1354 s = vcl_session_get_w_handle (wrk, session_handle);
1355 if (PREDICT_FALSE (!s || s->is_vep))
1356 return VPPCOM_EBADFD;
1358 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1360 session_state_t state = s->session_state;
1361 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1363 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! "
1364 "state 0x%x (%s), returning %d (%s)",
1365 getpid (), s->vpp_handle, session_handle, state,
1366 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1370 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1371 is_ct = vcl_session_is_ct (s);
1372 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1373 rx_fifo = s->rx_fifo;
1376 if (svm_fifo_is_empty (rx_fifo))
1380 svm_fifo_unset_event (rx_fifo);
1381 return VPPCOM_EWOULDBLOCK;
1383 while (svm_fifo_is_empty (rx_fifo))
1385 svm_fifo_unset_event (rx_fifo);
1386 svm_msg_q_lock (mq);
1387 if (svm_msg_q_is_empty (mq))
1388 svm_msg_q_wait (mq);
1390 svm_msg_q_sub_w_lock (mq, &msg);
1391 e = svm_msg_q_msg_data (mq, &msg);
1392 svm_msg_q_unlock (mq);
1393 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1395 vcl_handle_mq_event (wrk, e);
1396 svm_msg_q_free_msg (mq, &msg);
1399 svm_msg_q_free_msg (mq, &msg);
1401 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1407 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1409 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1411 if (svm_fifo_is_empty (rx_fifo))
1412 svm_fifo_unset_event (rx_fifo);
1414 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1416 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1417 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1421 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1422 getpid (), s->vpp_handle, session_handle, n_read, rx_fifo);
1428 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1430 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1434 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1436 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1440 vppcom_session_read_segments (uint32_t session_handle,
1441 vppcom_data_segments_t ds)
1443 vcl_worker_t *wrk = vcl_worker_get_current ();
1444 int n_read = 0, rv, is_nonblocking;
1445 vcl_session_t *s = 0;
1446 svm_fifo_t *rx_fifo;
1447 svm_msg_q_msg_t msg;
1452 s = vcl_session_get_w_handle (wrk, session_handle);
1453 if (PREDICT_FALSE (!s || s->is_vep))
1454 return VPPCOM_EBADFD;
1456 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1458 session_state_t state = s->session_state;
1459 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1463 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1464 is_ct = vcl_session_is_ct (s);
1465 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1466 rx_fifo = s->rx_fifo;
1469 if (svm_fifo_is_empty (rx_fifo))
1473 svm_fifo_unset_event (rx_fifo);
1474 return VPPCOM_EWOULDBLOCK;
1476 while (svm_fifo_is_empty (rx_fifo))
1478 svm_fifo_unset_event (rx_fifo);
1479 svm_msg_q_lock (mq);
1480 if (svm_msg_q_is_empty (mq))
1481 svm_msg_q_wait (mq);
1483 svm_msg_q_sub_w_lock (mq, &msg);
1484 e = svm_msg_q_msg_data (mq, &msg);
1485 svm_msg_q_unlock (mq);
1486 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1488 vcl_handle_mq_event (wrk, e);
1489 svm_msg_q_free_msg (mq, &msg);
1492 svm_msg_q_free_msg (mq, &msg);
1494 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1499 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1500 svm_fifo_unset_event (rx_fifo);
1502 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1504 /* If the peer is not polling send notification */
1505 if (!svm_fifo_has_event (s->rx_fifo))
1506 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1507 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1514 vppcom_session_free_segments (uint32_t session_handle,
1515 vppcom_data_segments_t ds)
1517 vcl_worker_t *wrk = vcl_worker_get_current ();
1520 s = vcl_session_get_w_handle (wrk, session_handle);
1521 if (PREDICT_FALSE (!s || s->is_vep))
1524 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1528 vppcom_session_read_ready (vcl_session_t * session)
1530 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1531 if (PREDICT_FALSE (session->is_vep))
1533 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1534 "epoll session!", getpid (), session->session_index);
1535 return VPPCOM_EBADFD;
1538 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1540 session_state_t state = session->session_state;
1543 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1545 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1546 " state 0x%x (%s), returning %d (%s)", getpid (),
1547 session->vpp_handle, session->session_index, state,
1548 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1552 if (session->session_state & STATE_LISTEN)
1553 return clib_fifo_elts (session->accept_evts_fifo);
1555 return svm_fifo_max_dequeue (session->rx_fifo);
1559 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1561 u32 first_copy = clib_min (ds[0].len, max_bytes);
1562 clib_memcpy_fast (buf, ds[0].data, first_copy);
1563 if (first_copy < max_bytes)
1565 clib_memcpy_fast (buf + first_copy, ds[1].data,
1566 clib_min (ds[1].len, max_bytes - first_copy));
1572 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1575 return (e->event_type == FIFO_EVENT_APP_TX
1576 && e->fifo->client_session_index == sid);
1578 return (e->event_type == SESSION_IO_EVT_CT_RX);
1582 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1584 vcl_worker_t *wrk = vcl_worker_get_current ();
1585 int rv, n_write, is_nonblocking;
1586 vcl_session_t *s = 0;
1587 svm_fifo_t *tx_fifo = 0;
1588 session_evt_type_t et;
1589 svm_msg_q_msg_t msg;
1594 if (PREDICT_FALSE (!buf))
1595 return VPPCOM_EINVAL;
1597 s = vcl_session_get_w_handle (wrk, session_handle);
1598 if (PREDICT_FALSE (!s))
1599 return VPPCOM_EBADFD;
1601 if (PREDICT_FALSE (s->is_vep))
1603 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1604 "cannot write to an epoll session!",
1605 getpid (), s->vpp_handle, session_handle);
1607 return VPPCOM_EBADFD;
1610 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1612 session_state_t state = s->session_state;
1613 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1614 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1615 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1616 state, vppcom_session_state_str (state));
1620 tx_fifo = s->tx_fifo;
1621 is_ct = vcl_session_is_ct (s);
1622 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1623 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1624 if (svm_fifo_is_full (tx_fifo))
1628 return VPPCOM_EWOULDBLOCK;
1630 while (svm_fifo_is_full (tx_fifo))
1632 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1633 svm_msg_q_lock (mq);
1634 if (svm_msg_q_is_empty (mq))
1635 svm_msg_q_wait (mq);
1637 svm_msg_q_sub_w_lock (mq, &msg);
1638 e = svm_msg_q_msg_data (mq, &msg);
1639 svm_msg_q_unlock (mq);
1641 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1642 vcl_handle_mq_event (wrk, e);
1643 svm_msg_q_free_msg (mq, &msg);
1647 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1648 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1650 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1651 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1653 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1656 ASSERT (n_write > 0);
1658 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1659 s->vpp_handle, session_handle, n_write);
1664 static vcl_session_t *
1665 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1668 s = vcl_session_get (wrk, f->client_session_index);
1672 if (type == 0 && s->rx_fifo == f)
1675 if (type == 1 && s->tx_fifo == f)
1678 s = vcl_session_get (wrk, f->master_session_index);
1681 if (type == 0 && s->rx_fifo == f)
1683 if (type == 1 && s->tx_fifo == f)
1690 vppcom_session_write_ready (vcl_session_t * session)
1692 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1693 if (PREDICT_FALSE (session->is_vep))
1695 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1696 "cannot write to an epoll session!",
1697 getpid (), session->vpp_handle, session->session_index);
1698 return VPPCOM_EBADFD;
1701 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1703 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1704 "cannot write to a listen session!",
1705 getpid (), session->vpp_handle, session->session_index);
1706 return VPPCOM_EBADFD;
1709 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1711 session_state_t state = session->session_state;
1714 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1715 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1716 "session is not open! state 0x%x (%s), "
1717 "returning %d (%s)", getpid (), session->vpp_handle,
1718 session->session_index,
1719 state, vppcom_session_state_str (state),
1720 rv, vppcom_retval_str (rv));
1724 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1725 getpid (), session->vpp_handle, session->session_index,
1726 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1728 return svm_fifo_max_enqueue (session->tx_fifo);
1732 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1734 svm_msg_q_msg_t *msg;
1738 n_msgs = svm_msg_q_size (mq);
1739 for (i = 0; i < n_msgs; i++)
1741 vec_add2 (wrk->mq_msg_vector, msg, 1);
1742 svm_msg_q_sub_w_lock (mq, msg);
1747 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1748 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1750 svm_fifo_unset_event (_fifo); \
1751 if (svm_fifo_is_empty (_fifo)) \
1756 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1757 unsigned long n_bits, unsigned long *read_map,
1758 unsigned long *write_map,
1759 unsigned long *except_map, u32 * bits_set)
1761 session_disconnected_msg_t *disconnected_msg;
1762 session_connected_msg_t *connected_msg;
1763 session_accepted_msg_t *accepted_msg;
1764 vcl_session_msg_t *vcl_msg;
1765 vcl_session_t *session;
1769 switch (e->event_type)
1771 case FIFO_EVENT_APP_RX:
1772 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1773 sid = e->fifo->client_session_index;
1774 session = vcl_session_get (wrk, sid);
1777 if (sid < n_bits && read_map)
1779 clib_bitmap_set_no_check (read_map, sid, 1);
1783 case FIFO_EVENT_APP_TX:
1784 sid = e->fifo->client_session_index;
1785 session = vcl_session_get (wrk, sid);
1788 if (sid < n_bits && write_map)
1790 clib_bitmap_set_no_check (write_map, sid, 1);
1794 case SESSION_IO_EVT_CT_TX:
1795 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1796 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
1799 sid = session->session_index;
1800 if (sid < n_bits && read_map)
1802 clib_bitmap_set_no_check (read_map, sid, 1);
1806 case SESSION_IO_EVT_CT_RX:
1807 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
1810 sid = session->session_index;
1811 if (sid < n_bits && write_map)
1813 clib_bitmap_set_no_check (write_map, sid, 1);
1817 case SESSION_CTRL_EVT_ACCEPTED:
1818 accepted_msg = (session_accepted_msg_t *) e->data;
1819 handle = accepted_msg->listener_handle;
1820 session = vcl_session_table_lookup_listener (wrk, handle);
1823 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
1824 "listener handle %llx", getpid (), handle);
1828 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
1829 vcl_msg->accepted_msg = *accepted_msg;
1830 sid = session->session_index;
1831 if (sid < n_bits && read_map)
1833 clib_bitmap_set_no_check (read_map, sid, 1);
1837 case SESSION_CTRL_EVT_CONNECTED:
1838 connected_msg = (session_connected_msg_t *) e->data;
1839 vcl_session_connected_handler (wrk, connected_msg);
1841 case SESSION_CTRL_EVT_DISCONNECTED:
1842 disconnected_msg = (session_disconnected_msg_t *) e->data;
1843 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
1844 if (sid < n_bits && except_map)
1846 clib_bitmap_set_no_check (except_map, sid, 1);
1850 case SESSION_CTRL_EVT_RESET:
1851 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
1852 if (sid < n_bits && except_map)
1854 clib_bitmap_set_no_check (except_map, sid, 1);
1859 clib_warning ("unhandled: %u", e->event_type);
1865 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
1866 unsigned long n_bits, unsigned long *read_map,
1867 unsigned long *write_map, unsigned long *except_map,
1868 double time_to_wait, u32 * bits_set)
1870 svm_msg_q_msg_t *msg;
1874 svm_msg_q_lock (mq);
1875 if (svm_msg_q_is_empty (mq))
1879 svm_msg_q_unlock (mq);
1885 svm_msg_q_unlock (mq);
1888 else if (time_to_wait < 0)
1890 svm_msg_q_wait (mq);
1894 if (svm_msg_q_timedwait (mq, time_to_wait))
1896 svm_msg_q_unlock (mq);
1901 vcl_mq_dequeue_batch (wrk, mq);
1902 svm_msg_q_unlock (mq);
1904 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
1906 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
1907 e = svm_msg_q_msg_data (mq, msg);
1908 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
1909 except_map, bits_set);
1910 svm_msg_q_free_msg (mq, msg);
1912 vec_reset_length (wrk->mq_msg_vector);
1917 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
1918 unsigned long *read_map, unsigned long *write_map,
1919 unsigned long *except_map, double time_to_wait,
1922 double total_wait = 0, wait_slice;
1923 vcl_cut_through_registration_t *cr;
1925 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
1926 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
1929 vcl_ct_registration_lock (wrk);
1931 pool_foreach (cr, wrk->cut_through_registrations, ({
1932 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
1936 vcl_ct_registration_unlock (wrk);
1938 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
1939 write_map, except_map, time_to_wait, bits_set);
1940 total_wait += wait_slice;
1944 while (total_wait < time_to_wait);
1950 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
1951 unsigned long *read_map, unsigned long *write_map,
1952 unsigned long *except_map, double time_to_wait,
1955 vcl_mq_evt_conn_t *mqc;
1956 int __clib_unused n_read;
1960 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
1961 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
1962 vec_len (wrk->mq_events), time_to_wait);
1963 for (i = 0; i < n_mq_evts; i++)
1965 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
1966 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
1967 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
1968 except_map, 0, bits_set);
1971 return (n_mq_evts > 0 ? (int) *bits_set : 0);
1975 vppcom_select (unsigned long n_bits, unsigned long *read_map,
1976 unsigned long *write_map, unsigned long *except_map,
1977 double time_to_wait)
1979 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
1980 vcl_worker_t *wrk = vcl_worker_get_current ();
1981 vcl_session_t *session = 0;
1984 ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
1986 if (n_bits && read_map)
1988 clib_bitmap_validate (wrk->rd_bitmap, minbits);
1989 clib_memcpy_fast (wrk->rd_bitmap, read_map,
1990 vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
1991 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
1993 if (n_bits && write_map)
1995 clib_bitmap_validate (wrk->wr_bitmap, minbits);
1996 clib_memcpy_fast (wrk->wr_bitmap, write_map,
1997 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
1998 memset (write_map, 0,
1999 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2001 if (n_bits && except_map)
2003 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2004 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2005 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2006 memset (except_map, 0,
2007 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2017 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2018 if (!(session = vcl_session_get (wrk, sid)))
2020 if (except_map && sid < minbits)
2021 clib_bitmap_set_no_check (except_map, sid, 1);
2025 rv = svm_fifo_is_full (session->tx_fifo);
2028 clib_bitmap_set_no_check (write_map, sid, 1);
2037 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2038 if (!(session = vcl_session_get (wrk, sid)))
2040 if (except_map && sid < minbits)
2041 clib_bitmap_set_no_check (except_map, sid, 1);
2045 rv = vppcom_session_read_ready (session);
2048 clib_bitmap_set_no_check (read_map, sid, 1);
2056 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2058 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2059 read_map, write_map, except_map, &bits_set);
2061 vec_reset_length (wrk->unhandled_evts_vector);
2063 if (vcm->cfg.use_mq_eventfd)
2064 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2065 time_to_wait, &bits_set);
2067 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2068 time_to_wait, &bits_set);
2074 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2076 vcl_session_t *session;
2077 vppcom_epoll_t *vep;
2080 if (VPPCOM_DEBUG <= 1)
2083 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2084 session = vcl_session_get (wrk, vep_idx);
2085 if (PREDICT_FALSE (!session))
2087 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2088 getpid (), vep_idx);
2091 if (PREDICT_FALSE (!session->is_vep))
2093 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2094 getpid (), vep_idx);
2097 vep = &session->vep;
2098 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2101 " is_vep_session = %u\n"
2102 " next_sid = 0x%x (%u)\n"
2103 " wait_cont_idx = 0x%x (%u)\n"
2104 "}\n", getpid (), vep_idx,
2105 session->is_vep, session->is_vep_session,
2106 vep->next_sh, vep->next_sh,
2107 session->wait_cont_idx, session->wait_cont_idx);
2109 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2111 session = vcl_session_get (wrk, sid);
2112 if (PREDICT_FALSE (!session))
2114 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2117 if (PREDICT_FALSE (session->is_vep))
2118 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2119 getpid (), vep_idx);
2120 else if (PREDICT_FALSE (!session->is_vep_session))
2122 clib_warning ("VCL<%d>: ERROR: session (%u) "
2123 "is not a vep session!", getpid (), sid);
2126 vep = &session->vep;
2127 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2128 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2129 "vep_idx (%u)!", getpid (),
2130 sid, session->vep.vep_sh, vep_idx);
2131 if (session->is_vep_session)
2133 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2135 " next_sid = 0x%x (%u)\n"
2136 " prev_sid = 0x%x (%u)\n"
2137 " vep_idx = 0x%x (%u)\n"
2138 " ev.events = 0x%x\n"
2139 " ev.data.u64 = 0x%llx\n"
2143 vep->next_sh, vep->next_sh,
2144 vep->prev_sh, vep->prev_sh,
2145 vep->vep_sh, vep->vep_sh,
2146 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2151 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2152 getpid (), vep_idx);
2156 vppcom_epoll_create (void)
2158 vcl_worker_t *wrk = vcl_worker_get_current ();
2159 vcl_session_t *vep_session;
2161 vep_session = vcl_session_alloc (wrk);
2163 vep_session->is_vep = 1;
2164 vep_session->vep.vep_sh = ~0;
2165 vep_session->vep.next_sh = ~0;
2166 vep_session->vep.prev_sh = ~0;
2167 vep_session->wait_cont_idx = ~0;
2168 vep_session->vpp_handle = ~0;
2170 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_sh);
2171 VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!",
2172 getpid (), vep_session->session_index, vep_session->session_index);
2174 return vcl_session_handle (vep_session);
2178 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2179 struct epoll_event *event)
2181 vcl_worker_t *wrk = vcl_worker_get_current ();
2182 vcl_session_t *vep_session;
2183 vcl_session_t *session;
2186 if (vep_handle == session_handle)
2188 clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!",
2189 getpid (), vep_handle);
2190 return VPPCOM_EINVAL;
2193 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2194 if (PREDICT_FALSE (!vep_session))
2196 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_handle);
2197 return VPPCOM_EBADFD;
2199 if (PREDICT_FALSE (!vep_session->is_vep))
2201 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2202 getpid (), vep_handle);
2203 return VPPCOM_EINVAL;
2206 ASSERT (vep_session->vep.vep_sh == ~0);
2207 ASSERT (vep_session->vep.prev_sh == ~0);
2209 session = vcl_session_get_w_handle (wrk, session_handle);
2210 if (PREDICT_FALSE (!session))
2212 VDBG (0, "VCL<%d>: ERROR: Invalid session_handle (%u)!",
2213 getpid (), session_handle);
2214 return VPPCOM_EBADFD;
2216 if (PREDICT_FALSE (session->is_vep))
2218 clib_warning ("ERROR: session_handle (%u) is a vep!", vep_handle);
2219 return VPPCOM_EINVAL;
2225 if (PREDICT_FALSE (!event))
2227 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to "
2228 "epoll_event structure!", getpid ());
2229 return VPPCOM_EINVAL;
2231 if (vep_session->vep.next_sh != ~0)
2233 vcl_session_t *next_session;
2234 next_session = vcl_session_get_w_handle (wrk,
2235 vep_session->vep.next_sh);
2236 if (PREDICT_FALSE (!next_session))
2238 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid "
2239 "vep.next_sid (%u) on vep_idx (%u)!",
2240 getpid (), vep_session->vep.next_sh, vep_handle);
2241 return VPPCOM_EBADFD;
2243 ASSERT (next_session->vep.prev_sh == vep_handle);
2244 next_session->vep.prev_sh = session_handle;
2246 session->vep.next_sh = vep_session->vep.next_sh;
2247 session->vep.prev_sh = vep_handle;
2248 session->vep.vep_sh = vep_handle;
2249 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2250 session->vep.ev = *event;
2251 session->is_vep = 0;
2252 session->is_vep_session = 1;
2253 vep_session->vep.next_sh = session_handle;
2255 VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x, "
2256 "data 0x%llx!", getpid (), vep_handle, session_handle,
2257 event->events, event->data.u64);
2258 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2262 if (PREDICT_FALSE (!event))
2264 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to "
2265 "epoll_event structure!", getpid ());
2269 else if (PREDICT_FALSE (!session->is_vep_session))
2271 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2272 "not a vep session!", getpid (), session_handle);
2276 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2278 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2279 "vep_idx (%u) != vep_idx (%u)!",
2280 getpid (), session_handle,
2281 session->vep.vep_sh, vep_handle);
2285 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2286 session->vep.ev = *event;
2287 VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
2288 " data 0x%llx!", getpid (), vep_handle, session_handle,
2289 event->events, event->data.u64);
2293 if (PREDICT_FALSE (!session->is_vep_session))
2295 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2296 "not a vep session!", getpid (), session_handle);
2300 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2302 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2303 "vep_idx (%u) != vep_idx (%u)!",
2304 getpid (), session_handle,
2305 session->vep.vep_sh, vep_handle);
2310 vep_session->wait_cont_idx =
2311 (vep_session->wait_cont_idx == session_handle) ?
2312 session->vep.next_sh : vep_session->wait_cont_idx;
2314 if (session->vep.prev_sh == vep_handle)
2315 vep_session->vep.next_sh = session->vep.next_sh;
2318 vcl_session_t *prev_session;
2319 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2320 if (PREDICT_FALSE (!prev_session))
2322 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2323 "vep.prev_sid (%u) on sid (%u)!",
2324 getpid (), session->vep.prev_sh, session_handle);
2325 return VPPCOM_EBADFD;
2327 ASSERT (prev_session->vep.next_sh == session_handle);
2328 prev_session->vep.next_sh = session->vep.next_sh;
2330 if (session->vep.next_sh != ~0)
2332 vcl_session_t *next_session;
2333 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2334 if (PREDICT_FALSE (!next_session))
2336 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2337 "vep.next_sid (%u) on sid (%u)!",
2338 getpid (), session->vep.next_sh, session_handle);
2339 return VPPCOM_EBADFD;
2341 ASSERT (next_session->vep.prev_sh == session_handle);
2342 next_session->vep.prev_sh = session->vep.prev_sh;
2345 memset (&session->vep, 0, sizeof (session->vep));
2346 session->vep.next_sh = ~0;
2347 session->vep.prev_sh = ~0;
2348 session->vep.vep_sh = ~0;
2349 session->is_vep_session = 0;
2350 VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!",
2351 getpid (), vep_handle, session_handle);
2352 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2356 clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op);
2360 vep_verify_epoll_chain (wrk, vep_handle);
2367 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2368 struct epoll_event *events, u32 * num_ev)
2370 session_disconnected_msg_t *disconnected_msg;
2371 session_connected_msg_t *connected_msg;
2372 session_accepted_msg_t *accepted_msg;
2373 u64 session_evt_data = ~0, handle;
2374 u32 sid = ~0, session_events;
2375 vcl_session_msg_t *vcl_msg;
2376 vcl_session_t *session;
2379 switch (e->event_type)
2381 case FIFO_EVENT_APP_RX:
2382 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2383 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2384 sid = e->fifo->client_session_index;
2385 session = vcl_session_get (wrk, sid);
2386 session_events = session->vep.ev.events;
2387 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2390 events[*num_ev].events |= EPOLLIN;
2391 session_evt_data = session->vep.ev.data.u64;
2392 session->has_rx_evt = 1;
2394 case FIFO_EVENT_APP_TX:
2395 sid = e->fifo->client_session_index;
2396 session = vcl_session_get (wrk, sid);
2397 session_events = session->vep.ev.events;
2398 if (!(EPOLLOUT & session_events))
2401 events[*num_ev].events |= EPOLLOUT;
2402 session_evt_data = session->vep.ev.data.u64;
2404 case SESSION_IO_EVT_CT_TX:
2405 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2406 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2407 sid = session->session_index;
2408 session_events = session->vep.ev.events;
2409 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2412 events[*num_ev].events |= EPOLLIN;
2413 session_evt_data = session->vep.ev.data.u64;
2414 session->has_rx_evt = 1;
2416 case SESSION_IO_EVT_CT_RX:
2417 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2418 sid = session->session_index;
2419 session_events = session->vep.ev.events;
2420 if (!(EPOLLOUT & session_events))
2423 events[*num_ev].events |= EPOLLOUT;
2424 session_evt_data = session->vep.ev.data.u64;
2426 case SESSION_CTRL_EVT_ACCEPTED:
2427 accepted_msg = (session_accepted_msg_t *) e->data;
2428 handle = accepted_msg->listener_handle;
2429 session = vcl_session_table_lookup_listener (wrk, handle);
2432 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
2433 "listener handle %llx", getpid (), handle);
2437 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
2438 vcl_msg->accepted_msg = *accepted_msg;
2439 session_events = session->vep.ev.events;
2440 if (!(EPOLLIN & session_events))
2444 events[*num_ev].events |= EPOLLIN;
2445 session_evt_data = session->vep.ev.data.u64;
2447 case SESSION_CTRL_EVT_CONNECTED:
2448 connected_msg = (session_connected_msg_t *) e->data;
2449 vcl_session_connected_handler (wrk, connected_msg);
2450 /* Generate EPOLLOUT because there's no connected event */
2451 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2452 session = vcl_session_get (wrk, sid);
2453 session_events = session->vep.ev.events;
2454 if (EPOLLOUT & session_events)
2457 events[*num_ev].events |= EPOLLOUT;
2458 session_evt_data = session->vep.ev.data.u64;
2461 case SESSION_CTRL_EVT_DISCONNECTED:
2462 disconnected_msg = (session_disconnected_msg_t *) e->data;
2463 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
2464 if (!(session = vcl_session_get (wrk, sid)))
2467 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2468 session_evt_data = session->vep.ev.data.u64;
2469 session_events = session->vep.ev.events;
2471 case SESSION_CTRL_EVT_RESET:
2472 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2473 if (!(session = vcl_session_get (wrk, sid)))
2476 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2477 session_evt_data = session->vep.ev.data.u64;
2478 session_events = session->vep.ev.events;
2481 VDBG (0, "unhandled: %u", e->event_type);
2487 events[*num_ev].data.u64 = session_evt_data;
2488 if (EPOLLONESHOT & session_events)
2490 session = vcl_session_get (wrk, sid);
2491 session->vep.ev.events = 0;
2498 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2499 struct epoll_event *events, u32 maxevents,
2500 double wait_for_time, u32 * num_ev)
2502 svm_msg_q_msg_t *msg;
2506 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2507 goto handle_dequeued;
2509 svm_msg_q_lock (mq);
2510 if (svm_msg_q_is_empty (mq))
2514 svm_msg_q_unlock (mq);
2517 else if (wait_for_time < 0)
2519 svm_msg_q_wait (mq);
2523 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2525 svm_msg_q_unlock (mq);
2530 vcl_mq_dequeue_batch (wrk, mq);
2531 svm_msg_q_unlock (mq);
2534 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2536 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2537 e = svm_msg_q_msg_data (mq, msg);
2538 if (*num_ev < maxevents)
2539 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2541 vec_add1 (wrk->unhandled_evts_vector, *e);
2542 svm_msg_q_free_msg (mq, msg);
2544 vec_reset_length (wrk->mq_msg_vector);
2550 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2551 int maxevents, u32 n_evts, double wait_for_time)
2553 vcl_cut_through_registration_t *cr;
2554 double total_wait = 0, wait_slice;
2557 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2558 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2562 vcl_ct_registration_lock (wrk);
2564 pool_foreach (cr, wrk->cut_through_registrations, ({
2565 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2568 vcl_ct_registration_unlock (wrk);
2570 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2571 maxevents, n_evts ? 0 : wait_slice,
2574 total_wait += wait_slice;
2578 while (total_wait < wait_for_time);
2583 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2584 int maxevents, u32 n_evts, double wait_for_time)
2586 vcl_mq_evt_conn_t *mqc;
2587 int __clib_unused n_read;
2591 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2593 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2594 vec_len (wrk->mq_events), wait_for_time);
2595 for (i = 0; i < n_mq_evts; i++)
2597 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2598 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2599 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2601 if (!n_evts && n_mq_evts > 0)
2604 return (int) n_evts;
2608 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2609 int maxevents, double wait_for_time)
2611 vcl_worker_t *wrk = vcl_worker_get_current ();
2612 vcl_session_t *vep_session;
2616 if (PREDICT_FALSE (maxevents <= 0))
2618 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2619 getpid (), maxevents);
2620 return VPPCOM_EINVAL;
2623 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2625 return VPPCOM_EBADFD;
2627 if (PREDICT_FALSE (!vep_session->is_vep))
2629 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2630 getpid (), vep_handle);
2631 return VPPCOM_EINVAL;
2634 memset (events, 0, sizeof (*events) * maxevents);
2636 if (vec_len (wrk->unhandled_evts_vector))
2638 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2640 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2642 if (n_evts == maxevents)
2649 vec_delete (wrk->unhandled_evts_vector, i, 0);
2652 if (vcm->cfg.use_mq_eventfd)
2653 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2656 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2661 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2662 void *buffer, uint32_t * buflen)
2664 vcl_worker_t *wrk = vcl_worker_get_current ();
2665 vcl_session_t *session;
2667 u32 *flags = buffer;
2668 vppcom_endpt_t *ep = buffer;
2670 session = vcl_session_get_w_handle (wrk, session_handle);
2672 return VPPCOM_EBADFD;
2676 case VPPCOM_ATTR_GET_NREAD:
2677 rv = vppcom_session_read_ready (session);
2678 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2682 case VPPCOM_ATTR_GET_NWRITE:
2683 rv = vppcom_session_write_ready (session);
2684 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2685 getpid (), session_handle, rv);
2688 case VPPCOM_ATTR_GET_FLAGS:
2689 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2691 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2692 VCL_SESS_ATTR_NONBLOCK));
2693 *buflen = sizeof (*flags);
2694 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2695 "is_nonblocking = %u", getpid (),
2696 session_handle, *flags,
2697 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2703 case VPPCOM_ATTR_SET_FLAGS:
2704 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2706 if (*flags & O_NONBLOCK)
2707 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2709 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2711 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2712 " is_nonblocking = %u",
2713 getpid (), session_handle, *flags,
2714 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2720 case VPPCOM_ATTR_GET_PEER_ADDR:
2721 if (PREDICT_TRUE (buffer && buflen &&
2722 (*buflen >= sizeof (*ep)) && ep->ip))
2724 ep->is_ip4 = session->transport.is_ip4;
2725 ep->port = session->transport.rmt_port;
2726 if (session->transport.is_ip4)
2727 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2728 sizeof (ip4_address_t));
2730 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2731 sizeof (ip6_address_t));
2732 *buflen = sizeof (*ep);
2733 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2734 "addr = %U, port %u", getpid (),
2735 session_handle, ep->is_ip4, format_ip46_address,
2736 &session->transport.rmt_ip,
2737 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2738 clib_net_to_host_u16 (ep->port));
2744 case VPPCOM_ATTR_GET_LCL_ADDR:
2745 if (PREDICT_TRUE (buffer && buflen &&
2746 (*buflen >= sizeof (*ep)) && ep->ip))
2748 ep->is_ip4 = session->transport.is_ip4;
2749 ep->port = session->transport.lcl_port;
2750 if (session->transport.is_ip4)
2751 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
2752 sizeof (ip4_address_t));
2754 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
2755 sizeof (ip6_address_t));
2756 *buflen = sizeof (*ep);
2757 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2758 " addr = %U port %d", getpid (),
2759 session_handle, ep->is_ip4, format_ip46_address,
2760 &session->transport.lcl_ip,
2761 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2762 clib_net_to_host_u16 (ep->port));
2768 case VPPCOM_ATTR_GET_LIBC_EPFD:
2769 rv = session->libc_epfd;
2770 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2774 case VPPCOM_ATTR_SET_LIBC_EPFD:
2775 if (PREDICT_TRUE (buffer && buflen &&
2776 (*buflen == sizeof (session->libc_epfd))))
2778 session->libc_epfd = *(int *) buffer;
2779 *buflen = sizeof (session->libc_epfd);
2781 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2782 "buflen %d", getpid (), session->libc_epfd, *buflen);
2788 case VPPCOM_ATTR_GET_PROTOCOL:
2789 if (buffer && buflen && (*buflen >= sizeof (int)))
2791 *(int *) buffer = session->session_type;
2792 *buflen = sizeof (int);
2794 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2795 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
2802 case VPPCOM_ATTR_GET_LISTEN:
2803 if (buffer && buflen && (*buflen >= sizeof (int)))
2805 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2806 VCL_SESS_ATTR_LISTEN);
2807 *buflen = sizeof (int);
2809 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
2810 getpid (), *(int *) buffer, *buflen);
2816 case VPPCOM_ATTR_GET_ERROR:
2817 if (buffer && buflen && (*buflen >= sizeof (int)))
2819 *(int *) buffer = 0;
2820 *buflen = sizeof (int);
2822 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
2823 getpid (), *(int *) buffer, *buflen);
2829 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
2830 if (buffer && buflen && (*buflen >= sizeof (u32)))
2834 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
2835 session->tx_fifo ? session->tx_fifo->nitems :
2836 vcm->cfg.tx_fifo_size);
2837 *buflen = sizeof (u32);
2839 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
2840 "buflen %d, #VPP-TBD#", getpid (),
2841 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2847 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
2848 if (buffer && buflen && (*buflen == sizeof (u32)))
2851 session->sndbuf_size = *(u32 *) buffer;
2852 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
2853 "buflen %d, #VPP-TBD#", getpid (),
2854 session->sndbuf_size, session->sndbuf_size, *buflen);
2860 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
2861 if (buffer && buflen && (*buflen >= sizeof (u32)))
2865 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
2866 session->rx_fifo ? session->rx_fifo->nitems :
2867 vcm->cfg.rx_fifo_size);
2868 *buflen = sizeof (u32);
2870 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
2871 "buflen %d, #VPP-TBD#", getpid (),
2872 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2878 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
2879 if (buffer && buflen && (*buflen == sizeof (u32)))
2882 session->rcvbuf_size = *(u32 *) buffer;
2883 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
2884 "buflen %d, #VPP-TBD#", getpid (),
2885 session->sndbuf_size, session->sndbuf_size, *buflen);
2891 case VPPCOM_ATTR_GET_REUSEADDR:
2892 if (buffer && buflen && (*buflen >= sizeof (int)))
2895 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2896 VCL_SESS_ATTR_REUSEADDR);
2897 *buflen = sizeof (int);
2899 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
2900 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2906 case VPPCOM_ATTR_SET_REUSEADDR:
2907 if (buffer && buflen && (*buflen == sizeof (int)) &&
2908 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
2911 if (*(int *) buffer)
2912 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
2914 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
2916 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
2917 " #VPP-TBD#", getpid (),
2918 VCL_SESS_ATTR_TEST (session->attr,
2919 VCL_SESS_ATTR_REUSEADDR), *buflen);
2925 case VPPCOM_ATTR_GET_REUSEPORT:
2926 if (buffer && buflen && (*buflen >= sizeof (int)))
2929 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2930 VCL_SESS_ATTR_REUSEPORT);
2931 *buflen = sizeof (int);
2933 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
2934 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2940 case VPPCOM_ATTR_SET_REUSEPORT:
2941 if (buffer && buflen && (*buflen == sizeof (int)) &&
2942 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
2945 if (*(int *) buffer)
2946 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
2948 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
2950 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
2951 " #VPP-TBD#", getpid (),
2952 VCL_SESS_ATTR_TEST (session->attr,
2953 VCL_SESS_ATTR_REUSEPORT), *buflen);
2959 case VPPCOM_ATTR_GET_BROADCAST:
2960 if (buffer && buflen && (*buflen >= sizeof (int)))
2963 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2964 VCL_SESS_ATTR_BROADCAST);
2965 *buflen = sizeof (int);
2967 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
2968 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2974 case VPPCOM_ATTR_SET_BROADCAST:
2975 if (buffer && buflen && (*buflen == sizeof (int)))
2978 if (*(int *) buffer)
2979 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
2981 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
2983 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
2984 "#VPP-TBD#", getpid (),
2985 VCL_SESS_ATTR_TEST (session->attr,
2986 VCL_SESS_ATTR_BROADCAST), *buflen);
2992 case VPPCOM_ATTR_GET_V6ONLY:
2993 if (buffer && buflen && (*buflen >= sizeof (int)))
2996 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2997 VCL_SESS_ATTR_V6ONLY);
2998 *buflen = sizeof (int);
3000 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
3001 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3007 case VPPCOM_ATTR_SET_V6ONLY:
3008 if (buffer && buflen && (*buflen == sizeof (int)))
3011 if (*(int *) buffer)
3012 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3014 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3016 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
3017 "#VPP-TBD#", getpid (),
3018 VCL_SESS_ATTR_TEST (session->attr,
3019 VCL_SESS_ATTR_V6ONLY), *buflen);
3025 case VPPCOM_ATTR_GET_KEEPALIVE:
3026 if (buffer && buflen && (*buflen >= sizeof (int)))
3029 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3030 VCL_SESS_ATTR_KEEPALIVE);
3031 *buflen = sizeof (int);
3033 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3034 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3040 case VPPCOM_ATTR_SET_KEEPALIVE:
3041 if (buffer && buflen && (*buflen == sizeof (int)))
3044 if (*(int *) buffer)
3045 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3047 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3049 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3050 "#VPP-TBD#", getpid (),
3051 VCL_SESS_ATTR_TEST (session->attr,
3052 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3058 case VPPCOM_ATTR_GET_TCP_NODELAY:
3059 if (buffer && buflen && (*buflen >= sizeof (int)))
3062 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3063 VCL_SESS_ATTR_TCP_NODELAY);
3064 *buflen = sizeof (int);
3066 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3067 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3073 case VPPCOM_ATTR_SET_TCP_NODELAY:
3074 if (buffer && buflen && (*buflen == sizeof (int)))
3077 if (*(int *) buffer)
3078 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3080 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3082 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3083 "#VPP-TBD#", getpid (),
3084 VCL_SESS_ATTR_TEST (session->attr,
3085 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3091 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3092 if (buffer && buflen && (*buflen >= sizeof (int)))
3095 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3096 VCL_SESS_ATTR_TCP_KEEPIDLE);
3097 *buflen = sizeof (int);
3099 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3100 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3106 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3107 if (buffer && buflen && (*buflen == sizeof (int)))
3110 if (*(int *) buffer)
3111 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3113 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3115 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3116 "#VPP-TBD#", getpid (),
3117 VCL_SESS_ATTR_TEST (session->attr,
3118 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3124 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3125 if (buffer && buflen && (*buflen >= sizeof (int)))
3128 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3129 VCL_SESS_ATTR_TCP_KEEPINTVL);
3130 *buflen = sizeof (int);
3132 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3133 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3139 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3140 if (buffer && buflen && (*buflen == sizeof (int)))
3143 if (*(int *) buffer)
3144 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3146 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3148 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3149 "#VPP-TBD#", getpid (),
3150 VCL_SESS_ATTR_TEST (session->attr,
3151 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3157 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3158 if (buffer && buflen && (*buflen >= sizeof (u32)))
3161 *(u32 *) buffer = session->user_mss;
3162 *buflen = sizeof (int);
3164 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3165 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3171 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3172 if (buffer && buflen && (*buflen == sizeof (u32)))
3175 session->user_mss = *(u32 *) buffer;
3177 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3178 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3184 case VPPCOM_ATTR_GET_REFCNT:
3185 rv = vcl_session_get_refcnt (session);
3197 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3198 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3200 vcl_worker_t *wrk = vcl_worker_get_current ();
3202 vcl_session_t *session = 0;
3206 session = vcl_session_get_w_handle (wrk, session_handle);
3207 if (PREDICT_FALSE (!session))
3209 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3210 getpid (), session_handle);
3211 return VPPCOM_EBADFD;
3213 ep->is_ip4 = session->transport.is_ip4;
3214 ep->port = session->transport.rmt_port;
3218 rv = vppcom_session_read (session_handle, buffer, buflen);
3219 else if (flags & MSG_PEEK)
3220 rv = vppcom_session_peek (session_handle, buffer, buflen);
3223 clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d",
3225 return VPPCOM_EAFNOSUPPORT;
3230 if (session->transport.is_ip4)
3231 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3232 sizeof (ip4_address_t));
3234 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3235 sizeof (ip6_address_t));
3242 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3243 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3246 return VPPCOM_EINVAL;
3251 return VPPCOM_EINVAL;
3256 // TBD check the flags and do the right thing
3257 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3258 getpid (), flags, flags);
3261 return (vppcom_session_write (session_handle, buffer, buflen));
3265 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3267 vcl_worker_t *wrk = vcl_worker_get_current ();
3268 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3269 u32 i, keep_trying = 1;
3270 svm_msg_q_msg_t msg;
3274 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3275 getpid (), vp, n_sids, wait_for_time);
3278 return VPPCOM_EFAULT;
3282 vcl_session_t *session;
3284 /* Dequeue all events and drop all unhandled io events */
3285 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3287 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3288 vcl_handle_mq_event (wrk, e);
3289 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3291 vec_reset_length (wrk->unhandled_evts_vector);
3293 for (i = 0; i < n_sids; i++)
3295 session = vcl_session_get (wrk, vp[i].sid);
3298 vp[i].revents = POLLHUP;
3305 if (POLLIN & vp[i].events)
3307 rv = vppcom_session_read_ready (session);
3310 vp[i].revents |= POLLIN;
3317 case VPPCOM_ECONNRESET:
3318 vp[i].revents = POLLHUP;
3322 vp[i].revents = POLLERR;
3329 if (POLLOUT & vp[i].events)
3331 rv = vppcom_session_write_ready (session);
3334 vp[i].revents |= POLLOUT;
3341 case VPPCOM_ECONNRESET:
3342 vp[i].revents = POLLHUP;
3346 vp[i].revents = POLLERR;
3353 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3355 vp[i].revents = POLLNVAL;
3359 if (wait_for_time != -1)
3360 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3362 while ((num_ev == 0) && keep_trying);
3364 if (VPPCOM_DEBUG > 3)
3366 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3367 for (i = 0; i < n_sids; i++)
3369 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3370 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3371 vp[i].events, vp[i].revents);
3378 vppcom_mq_epoll_fd (void)
3380 vcl_worker_t *wrk = vcl_worker_get_current ();
3381 return wrk->mqs_epfd;
3385 vppcom_session_index (uint32_t session_handle)
3387 return session_handle & 0xFFFFFF;
3391 vppcom_session_handle (uint32_t session_index)
3393 return (vcl_get_worker_index () << 24) | session_index;
3397 vppcom_worker_register (void)
3399 if (!vcl_worker_alloc_and_init ())
3400 return VPPCOM_EEXIST;
3402 if (vcl_worker_set_bapi ())
3403 return VPPCOM_EEXIST;
3405 if (vcl_worker_register_with_vpp ())
3406 return VPPCOM_EEXIST;
3412 vppcom_worker_index (void)
3414 return vcl_get_worker_index ();
3418 * fd.io coding-style-patch-verification: ON
3421 * eval: (c-set-style "gnu")