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;
28 sigsegv_signal (int signum)
34 vcl_wait_for_memory (void *mem)
36 u8 __clib_unused test;
37 if (vcm->mounting_segment)
39 while (vcm->mounting_segment)
48 if (signal (SIGSEGV, sigsegv_signal))
64 signal (SIGSEGV, SIG_DFL);
68 vppcom_session_state_str (session_state_t state)
90 case STATE_CLOSE_ON_EMPTY:
91 st = "STATE_CLOSE_ON_EMPTY";
94 case STATE_DISCONNECT:
95 st = "STATE_DISCONNECT";
103 st = "UNKNOWN_STATE";
111 format_ip4_address (u8 * s, va_list * args)
113 u8 *a = va_arg (*args, u8 *);
114 return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
118 format_ip6_address (u8 * s, va_list * args)
120 ip6_address_t *a = va_arg (*args, ip6_address_t *);
121 u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon;
123 i_max_n_zero = ARRAY_LEN (a->as_u16);
125 i_first_zero = i_max_n_zero;
127 for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
129 u32 is_zero = a->as_u16[i] == 0;
130 if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16))
136 if ((!is_zero && n_zeros > max_n_zeros)
137 || (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros))
139 i_max_n_zero = i_first_zero;
140 max_n_zeros = n_zeros;
141 i_first_zero = ARRAY_LEN (a->as_u16);
146 last_double_colon = 0;
147 for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
149 if (i == i_max_n_zero && max_n_zeros > 1)
151 s = format (s, "::");
152 i += max_n_zeros - 1;
153 last_double_colon = 1;
157 s = format (s, "%s%x",
158 (last_double_colon || i == 0) ? "" : ":",
159 clib_net_to_host_u16 (a->as_u16[i]));
160 last_double_colon = 0;
167 /* Format an IP46 address. */
169 format_ip46_address (u8 * s, va_list * args)
171 ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
172 ip46_type_t type = va_arg (*args, ip46_type_t);
178 is_ip4 = ip46_address_is_ip4 (ip46);
189 format (s, "%U", format_ip4_address, &ip46->ip4) :
190 format (s, "%U", format_ip6_address, &ip46->ip6);
194 * VPPCOM Utility Functions
199 vcl_session_vpp_evt_q (vcl_worker_t * wrk, vcl_session_t * s)
201 if (vcl_session_is_ct (s))
202 return wrk->vpp_event_queues[0];
204 return wrk->vpp_event_queues[s->tx_fifo->master_thread_index];
208 vcl_send_session_accepted_reply (svm_msg_q_t * mq, u32 context,
209 session_handle_t handle, int retval)
211 app_session_evt_t _app_evt, *app_evt = &_app_evt;
212 session_accepted_reply_msg_t *rmp;
213 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_ACCEPTED_REPLY);
214 rmp = (session_accepted_reply_msg_t *) app_evt->evt->data;
215 rmp->handle = handle;
216 rmp->context = context;
217 rmp->retval = retval;
218 app_send_ctrl_evt_to_vpp (mq, app_evt);
222 vcl_send_session_disconnected_reply (svm_msg_q_t * mq, u32 context,
223 session_handle_t handle, int retval)
225 app_session_evt_t _app_evt, *app_evt = &_app_evt;
226 session_disconnected_reply_msg_t *rmp;
227 app_alloc_ctrl_evt_to_vpp (mq, app_evt,
228 SESSION_CTRL_EVT_DISCONNECTED_REPLY);
229 rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
230 rmp->handle = handle;
231 rmp->context = context;
232 rmp->retval = retval;
233 app_send_ctrl_evt_to_vpp (mq, app_evt);
237 vcl_send_session_reset_reply (svm_msg_q_t * mq, u32 context,
238 session_handle_t handle, int retval)
240 app_session_evt_t _app_evt, *app_evt = &_app_evt;
241 session_reset_reply_msg_t *rmp;
242 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_RESET_REPLY);
243 rmp = (session_reset_reply_msg_t *) app_evt->evt->data;
244 rmp->handle = handle;
245 rmp->context = context;
246 rmp->retval = retval;
247 app_send_ctrl_evt_to_vpp (mq, app_evt);
251 vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp)
253 vcl_session_t *session, *listen_session;
254 svm_fifo_t *rx_fifo, *tx_fifo;
258 session = vcl_session_alloc (wrk);
260 listen_session = vcl_session_table_lookup_listener (wrk,
261 mp->listener_handle);
265 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
266 clib_warning ("VCL<%d>: ERROR: couldn't find listen session: "
267 "unknown vpp listener handle %llx",
268 getpid (), mp->listener_handle);
269 vcl_send_session_accepted_reply (evt_q, mp->context, mp->handle,
270 VNET_API_ERROR_INVALID_ARGUMENT);
271 vcl_session_free (wrk, session);
272 return VCL_INVALID_SESSION_INDEX;
275 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
276 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
278 if (mp->server_event_queue_address)
280 session->vpp_evt_q = uword_to_pointer (mp->client_event_queue_address,
282 session->our_evt_q = uword_to_pointer (mp->server_event_queue_address,
284 vcl_wait_for_memory (session->vpp_evt_q);
285 rx_fifo->master_session_index = session->session_index;
286 tx_fifo->master_session_index = session->session_index;
287 rx_fifo->master_thread_index = vcl_get_worker_index ();
288 tx_fifo->master_thread_index = vcl_get_worker_index ();
289 vec_validate (wrk->vpp_event_queues, 0);
290 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
291 wrk->vpp_event_queues[0] = evt_q;
295 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
297 rx_fifo->client_session_index = session->session_index;
298 tx_fifo->client_session_index = session->session_index;
299 rx_fifo->client_thread_index = vcl_get_worker_index ();
300 tx_fifo->client_thread_index = vcl_get_worker_index ();
301 vpp_wrk_index = tx_fifo->master_thread_index;
302 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
303 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
306 session->vpp_handle = mp->handle;
307 session->client_context = mp->context;
308 session->rx_fifo = rx_fifo;
309 session->tx_fifo = tx_fifo;
311 session->session_state = STATE_ACCEPT;
312 session->transport.rmt_port = mp->port;
313 session->transport.is_ip4 = mp->is_ip4;
314 clib_memcpy_fast (&session->transport.rmt_ip, mp->ip,
315 sizeof (ip46_address_t));
317 vcl_session_table_add_vpp_handle (wrk, mp->handle, session->session_index);
318 session->transport.lcl_port = listen_session->transport.lcl_port;
319 session->transport.lcl_ip = listen_session->transport.lcl_ip;
320 session->session_type = listen_session->session_type;
321 session->is_dgram = session->session_type == VPPCOM_PROTO_UDP;
323 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: client accept request from %s"
324 " address %U port %d queue %p!", getpid (), mp->handle,
325 session->session_index,
326 mp->is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &mp->ip,
327 mp->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
328 clib_net_to_host_u16 (mp->port), session->vpp_evt_q);
329 vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index);
331 return session->session_index;
335 vcl_session_connected_handler (vcl_worker_t * wrk,
336 session_connected_msg_t * mp)
338 u32 session_index, vpp_wrk_index;
339 svm_fifo_t *rx_fifo, *tx_fifo;
340 vcl_session_t *session = 0;
343 session_index = mp->context;
344 session = vcl_session_get (wrk, session_index);
347 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
348 "Invalid session index (%u)!",
349 getpid (), mp->handle, session_index);
350 return VCL_INVALID_SESSION_INDEX;
354 clib_warning ("VCL<%d>: ERROR: sid %u: connect failed! %U", getpid (),
355 session_index, format_api_error, ntohl (mp->retval));
356 session->session_state = STATE_FAILED;
357 session->vpp_handle = mp->handle;
358 return session_index;
361 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
362 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
363 vcl_wait_for_memory (rx_fifo);
364 rx_fifo->client_session_index = session_index;
365 tx_fifo->client_session_index = session_index;
366 rx_fifo->client_thread_index = vcl_get_worker_index ();
367 tx_fifo->client_thread_index = vcl_get_worker_index ();
369 if (mp->client_event_queue_address)
371 session->vpp_evt_q = uword_to_pointer (mp->server_event_queue_address,
373 session->our_evt_q = uword_to_pointer (mp->client_event_queue_address,
376 vec_validate (wrk->vpp_event_queues, 0);
377 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
378 wrk->vpp_event_queues[0] = evt_q;
382 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
384 vpp_wrk_index = tx_fifo->master_thread_index;
385 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
386 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
389 session->rx_fifo = rx_fifo;
390 session->tx_fifo = tx_fifo;
391 session->vpp_handle = mp->handle;
392 session->transport.is_ip4 = mp->is_ip4;
393 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
394 sizeof (session->transport.lcl_ip));
395 session->transport.lcl_port = mp->lcl_port;
396 session->session_state = STATE_CONNECT;
398 /* Add it to lookup table */
399 hash_set (wrk->session_index_by_vpp_handles, mp->handle, session_index);
401 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: connect succeeded! "
402 "session_rx_fifo %p, refcnt %d, session_tx_fifo %p, refcnt %d",
403 getpid (), mp->handle, session_index, session->rx_fifo,
404 session->rx_fifo->refcnt, session->tx_fifo, session->tx_fifo->refcnt);
406 return session_index;
410 vcl_session_reset_handler (vcl_worker_t * wrk,
411 session_reset_msg_t * reset_msg)
413 vcl_session_t *session;
416 sid = vcl_session_index_from_vpp_handle (wrk, reset_msg->handle);
417 session = vcl_session_get (wrk, sid);
420 VDBG (0, "request to reset unknown handle 0x%llx", reset_msg->handle);
421 return VCL_INVALID_SESSION_INDEX;
423 session->session_state = STATE_CLOSE_ON_EMPTY;
424 VDBG (0, "reset handle 0x%llx, sid %u ", reset_msg->handle, sid);
425 vcl_send_session_reset_reply (vcl_session_vpp_evt_q (wrk, session),
426 wrk->my_client_index, reset_msg->handle, 0);
431 vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp)
433 vcl_session_t *session;
434 u32 sid = mp->context;
436 session = vcl_session_get (wrk, sid);
439 VDBG (0, "VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: bind failed: %U",
440 getpid (), mp->handle, sid, format_api_error, ntohl (mp->retval));
443 session->session_state = STATE_FAILED;
444 session->vpp_handle = mp->handle;
449 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
450 "Invalid session index (%u)!",
451 getpid (), mp->handle, sid);
452 return VCL_INVALID_SESSION_INDEX;
456 session->vpp_handle = mp->handle;
457 session->transport.is_ip4 = mp->lcl_is_ip4;
458 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
459 sizeof (ip46_address_t));
460 session->transport.lcl_port = mp->lcl_port;
461 vcl_session_table_add_listener (wrk, mp->handle, sid);
462 session->session_state = STATE_LISTEN;
464 if (session->is_dgram)
466 svm_fifo_t *rx_fifo, *tx_fifo;
467 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
468 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
469 rx_fifo->client_session_index = sid;
470 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
471 tx_fifo->client_session_index = sid;
472 session->rx_fifo = rx_fifo;
473 session->tx_fifo = tx_fifo;
476 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: bind succeeded!",
477 getpid (), mp->handle, sid);
482 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
484 session_accepted_msg_t *accepted_msg;
485 session_disconnected_msg_t *disconnected_msg;
486 vcl_session_msg_t *vcl_msg;
487 vcl_session_t *session;
491 switch (e->event_type)
493 case FIFO_EVENT_APP_RX:
494 case FIFO_EVENT_APP_TX:
495 case SESSION_IO_EVT_CT_RX:
496 case SESSION_IO_EVT_CT_TX:
497 vec_add1 (wrk->unhandled_evts_vector, *e);
499 case SESSION_CTRL_EVT_ACCEPTED:
500 accepted_msg = (session_accepted_msg_t *) e->data;
501 handle = accepted_msg->listener_handle;
502 session = vcl_session_table_lookup_listener (wrk, handle);
505 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
506 "listener handle %llx", getpid (), handle);
510 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
511 vcl_msg->accepted_msg = *accepted_msg;
513 case SESSION_CTRL_EVT_CONNECTED:
514 vcl_session_connected_handler (wrk,
515 (session_connected_msg_t *) e->data);
517 case SESSION_CTRL_EVT_DISCONNECTED:
518 disconnected_msg = (session_disconnected_msg_t *) e->data;
519 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
520 session = vcl_session_get (wrk, sid);
523 VDBG (0, "request to disconnect unknown handle 0x%llx",
524 disconnected_msg->handle);
527 session->session_state = STATE_DISCONNECT;
528 VDBG (0, "disconnected handle 0x%llx, sid %u", disconnected_msg->handle,
531 case SESSION_CTRL_EVT_RESET:
532 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
534 case SESSION_CTRL_EVT_BOUND:
535 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
538 clib_warning ("unhandled %u", e->event_type);
544 vppcom_wait_for_session_state_change (u32 session_index,
545 session_state_t state,
548 vcl_worker_t *wrk = vcl_worker_get_current ();
549 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
550 vcl_session_t *volatile session;
556 session = vcl_session_get (wrk, session_index);
557 if (PREDICT_FALSE (!session))
559 return VPPCOM_EBADFD;
561 if (session->session_state & state)
565 if (session->session_state & STATE_FAILED)
567 return VPPCOM_ECONNREFUSED;
570 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
572 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
573 vcl_handle_mq_event (wrk, e);
574 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
576 while (clib_time_now (&wrk->clib_time) < timeout);
578 VDBG (0, "VCL<%d>: timeout waiting for state 0x%x (%s)", getpid (), state,
579 vppcom_session_state_str (state));
580 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
582 return VPPCOM_ETIMEDOUT;
586 vppcom_app_session_enable (void)
590 if (vcm->app_state != STATE_APP_ENABLED)
592 vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
593 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
594 if (PREDICT_FALSE (rv))
596 VDBG (0, "VCL<%d>: application session enable timed out! "
597 "returning %d (%s)", getpid (), rv, vppcom_retval_str (rv));
605 vppcom_app_attach (void)
609 vppcom_app_send_attach ();
610 rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED);
611 if (PREDICT_FALSE (rv))
613 VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)",
614 getpid (), rv, vppcom_retval_str (rv));
622 vppcom_session_unbind (u32 session_handle)
624 vcl_worker_t *wrk = vcl_worker_get_current ();
625 vcl_session_t *session = 0;
628 session = vcl_session_get_w_handle (wrk, session_handle);
630 return VPPCOM_EBADFD;
632 vpp_handle = session->vpp_handle;
633 vcl_session_table_del_listener (wrk, vpp_handle);
634 session->vpp_handle = ~0;
635 session->session_state = STATE_DISCONNECT;
637 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state"
638 " 0x%x (%s)", getpid (), vpp_handle, session_handle, STATE_DISCONNECT,
639 vppcom_session_state_str (STATE_DISCONNECT));
640 vcl_evt (VCL_EVT_UNBIND, session);
641 vppcom_send_unbind_sock (vpp_handle);
647 vppcom_session_disconnect (u32 session_handle)
649 vcl_worker_t *wrk = vcl_worker_get_current ();
650 svm_msg_q_t *vpp_evt_q;
651 vcl_session_t *session;
652 session_state_t state;
655 session = vcl_session_get_w_handle (wrk, session_handle);
657 return VPPCOM_EBADFD;
659 vpp_handle = session->vpp_handle;
660 state = session->session_state;
662 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (),
663 vpp_handle, session_handle, state, vppcom_session_state_str (state));
665 if (PREDICT_FALSE (state & STATE_LISTEN))
667 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
668 "Cannot disconnect a listen socket!",
669 getpid (), vpp_handle, session_handle);
670 return VPPCOM_EBADFD;
673 if (state & STATE_CLOSE_ON_EMPTY)
675 vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
676 vcl_send_session_disconnected_reply (vpp_evt_q, wrk->my_client_index,
678 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect "
679 "REPLY...", getpid (), vpp_handle, session_handle);
683 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...",
684 getpid (), vpp_handle, session_handle);
685 vppcom_send_disconnect_session (vpp_handle);
692 vcl_cleanup_bapi (void)
694 socket_client_main_t *scm = &socket_client_main;
695 api_main_t *am = &api_main;
697 am->my_client_index = ~0;
698 am->my_registration = 0;
699 am->vl_input_queue = 0;
700 am->msg_index_by_name_and_crc = 0;
703 vl_client_api_unmap ();
707 vcl_app_fork_child_handler (void)
712 VDBG (0, "initializing forked child");
717 parent_wrk = vcl_get_worker_index ();
718 vcl_set_worker_index (~0);
719 if (!vcl_worker_alloc_and_init ())
720 VERR ("couldn't allocate new worker");
723 * Attach to binary api
725 child_name = format (0, "%v-child-%u%c", vcm->app_name, getpid (), 0);
727 vppcom_api_hookup ();
728 vcm->app_state = STATE_APP_START;
729 rv = vppcom_connect_to_vpp ((char *) child_name);
730 vec_free (child_name);
733 VERR ("couldn't connect to VPP!");
738 * Register worker with vpp and share sessions
740 vcl_worker_register_with_vpp ();
741 vcl_worker_share_sessions (parent_wrk);
743 VDBG (0, "forked child main worker initialized");
748 vcl_app_fork_parent_handler (void)
757 * VPPCOM Public API functions
760 vppcom_app_create (char *app_name)
762 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
767 clib_warning ("already initialized");
772 vppcom_cfg (&vcm->cfg);
775 vcm->main_cpu = pthread_self ();
776 vcm->main_pid = getpid ();
777 vcm->app_name = format (0, "%s", app_name);
778 vppcom_init_error_string_table ();
779 svm_fifo_segment_main_init (vcl_cfg->segment_baseva,
780 20 /* timeout in secs */ );
781 pool_alloc (vcm->workers, vcl_cfg->max_workers);
782 clib_spinlock_init (&vcm->workers_lock);
783 pthread_atfork (NULL, vcl_app_fork_parent_handler,
784 vcl_app_fork_child_handler);
786 /* Allocate default worker */
787 vcl_worker_alloc_and_init ();
789 /* API hookup and connect to VPP */
790 vppcom_api_hookup ();
792 vcm->app_state = STATE_APP_START;
793 rv = vppcom_connect_to_vpp (app_name);
796 VERR ("couldn't connect to VPP!");
799 VDBG (0, "sending session enable");
800 rv = vppcom_app_session_enable ();
803 VERR ("vppcom_app_session_enable() failed!");
807 VDBG (0, "sending app attach");
808 rv = vppcom_app_attach ();
811 VERR ("vppcom_app_attach() failed!");
815 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
816 vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
822 vppcom_app_destroy (void)
825 f64 orig_app_timeout;
827 vcl_evt (VCL_EVT_DETACH, vcm);
829 if (vec_len (vcm->workers) == 1)
831 vppcom_app_send_detach ();
832 orig_app_timeout = vcm->cfg.app_timeout;
833 vcm->cfg.app_timeout = 2.0;
834 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
835 vcm->cfg.app_timeout = orig_app_timeout;
836 if (PREDICT_FALSE (rv))
837 VDBG (0, "application detach timed out! returning %d (%s)", rv,
838 vppcom_retval_str (rv));
842 vcl_worker_cleanup ();
846 vl_client_disconnect_from_vlib ();
847 vec_free (vcm->app_name);
851 vppcom_session_create (u8 proto, u8 is_nonblocking)
853 vcl_worker_t *wrk = vcl_worker_get_current ();
854 vcl_session_t *session;
856 session = vcl_session_alloc (wrk);
858 session->session_type = proto;
859 session->session_state = STATE_START;
860 session->vpp_handle = ~0;
861 session->is_dgram = proto == VPPCOM_PROTO_UDP;
864 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
866 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
867 is_nonblocking, session_index);
869 VDBG (0, "created sid %u", session->session_index);
871 return vcl_session_handle (session);
875 vppcom_session_close (uint32_t session_handle)
877 vcl_worker_t *wrk = vcl_worker_get_current ();
878 u8 is_vep, do_disconnect = 1;
879 vcl_session_t *session = 0;
880 session_state_t state;
885 session = vcl_session_get_w_handle (wrk, session_handle);
887 return VPPCOM_EBADFD;
889 if (session->shared_index != ~0)
890 do_disconnect = vcl_worker_unshare_session (wrk, session);
892 is_vep = session->is_vep;
893 next_sh = session->vep.next_sh;
894 vep_sh = session->vep.vep_sh;
895 state = session->session_state;
896 vpp_handle = session->vpp_handle;
898 VDBG (0, "Closing session handle %u vpp handle %u", session_handle,
903 while (next_sh != ~0)
905 rv = vppcom_epoll_ctl (session_handle, EPOLL_CTL_DEL, next_sh, 0);
906 if (PREDICT_FALSE (rv < 0))
907 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u"
908 " failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
909 vppcom_retval_str (rv));
911 next_sh = session->vep.next_sh;
916 if (session->is_vep_session)
918 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, session_handle, 0);
920 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u "
921 "failed! rv %d (%s)", vpp_handle, session_handle, vep_sh,
922 rv, vppcom_retval_str (rv));
928 if (state & STATE_LISTEN)
930 rv = vppcom_session_unbind (session_handle);
931 if (PREDICT_FALSE (rv < 0))
932 VDBG (0, "vpp handle 0x%llx, sid %u: listener unbind failed! "
933 "rv %d (%s)", vpp_handle, session_handle, rv,
934 vppcom_retval_str (rv));
936 else if (state & STATE_OPEN)
938 rv = vppcom_session_disconnect (session_handle);
939 if (PREDICT_FALSE (rv < 0))
940 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
941 "session disconnect failed! rv %d (%s)",
942 getpid (), vpp_handle, session_handle,
943 rv, vppcom_retval_str (rv));
949 if (vcl_session_is_ct (session))
951 vcl_cut_through_registration_t *ctr;
954 mq_addr = pointer_to_uword (session->our_evt_q);
955 ctr = vcl_ct_registration_lock_and_lookup (wrk, mq_addr);
957 if (ctr->epoll_evt_conn_index != ~0)
958 vcl_mq_epoll_del_evfd (wrk, ctr->epoll_evt_conn_index);
959 VDBG (0, "Removing ct registration %u",
960 vcl_ct_registration_index (wrk, ctr));
961 vcl_ct_registration_del (wrk, ctr);
962 vcl_ct_registration_lookup_del (wrk, mq_addr);
963 vcl_ct_registration_unlock (wrk);
966 if (vpp_handle != ~0)
968 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
970 vcl_session_free (wrk, session);
972 VDBG (0, "session handle %u vpp handle %u removed", session_handle,
975 vcl_evt (VCL_EVT_CLOSE, session, rv);
981 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
983 vcl_worker_t *wrk = vcl_worker_get_current ();
984 vcl_session_t *session = 0;
987 return VPPCOM_EINVAL;
989 session = vcl_session_get_w_handle (wrk, session_handle);
991 return VPPCOM_EBADFD;
995 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
996 "bind to an epoll session!", getpid (), session_handle);
997 return VPPCOM_EBADFD;
1000 session->transport.is_ip4 = ep->is_ip4;
1002 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1003 sizeof (ip4_address_t));
1005 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1006 sizeof (ip6_address_t));
1007 session->transport.lcl_port = ep->port;
1009 VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
1010 "proto %s", getpid (), session_handle,
1011 session->transport.is_ip4 ? "IPv4" : "IPv6",
1012 format_ip46_address, &session->transport.lcl_ip,
1013 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1014 clib_net_to_host_u16 (session->transport.lcl_port),
1015 session->session_type ? "UDP" : "TCP");
1016 vcl_evt (VCL_EVT_BIND, session);
1018 if (session->session_type == VPPCOM_PROTO_UDP)
1019 vppcom_session_listen (session_handle, 10);
1025 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1027 vcl_worker_t *wrk = vcl_worker_get_current ();
1028 vcl_session_t *listen_session = 0;
1029 u64 listen_vpp_handle;
1032 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1033 if (!listen_session)
1034 return VPPCOM_EBADFD;
1036 if (q_len == 0 || q_len == ~0)
1037 q_len = vcm->cfg.listen_queue_size;
1039 if (listen_session->is_vep)
1041 clib_warning ("VCL<%d>: ERROR: sid %u: cannot listen on an "
1042 "epoll session!", getpid (), listen_sh);
1043 return VPPCOM_EBADFD;
1046 listen_vpp_handle = listen_session->vpp_handle;
1047 if (listen_session->session_state & STATE_LISTEN)
1049 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: already in listen state!",
1050 getpid (), listen_vpp_handle, listen_sh);
1054 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: sending VPP bind+listen "
1055 "request...", getpid (), listen_vpp_handle, listen_sh);
1058 * Send listen request to vpp and wait for reply
1060 vppcom_send_bind_sock (listen_session);
1061 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1063 vcm->cfg.session_timeout);
1065 if (PREDICT_FALSE (rv))
1067 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1068 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: bind+listen failed! "
1069 "returning %d (%s)", getpid (), listen_session->vpp_handle,
1070 listen_sh, rv, vppcom_retval_str (rv));
1078 validate_args_session_accept_ (vcl_worker_t * wrk,
1079 vcl_session_t * listen_session)
1081 /* Input validation - expects spinlock on sessions_lockp */
1082 if (listen_session->is_vep)
1084 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1085 "epoll session!", getpid (),
1086 listen_session->session_index);
1087 return VPPCOM_EBADFD;
1090 if (listen_session->session_state != STATE_LISTEN)
1092 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1093 "not in listen state! state 0x%x (%s)", getpid (),
1094 listen_session->vpp_handle, listen_session->session_index,
1095 listen_session->session_state,
1096 vppcom_session_state_str (listen_session->session_state));
1097 return VPPCOM_EBADFD;
1103 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1106 u32 client_session_index = ~0, listen_session_index;
1107 vcl_worker_t *wrk = vcl_worker_get_current ();
1108 session_accepted_msg_t accepted_msg;
1109 vcl_session_t *listen_session = 0;
1110 vcl_session_t *client_session = 0;
1111 svm_msg_q_t *vpp_evt_q;
1112 vcl_session_msg_t *evt;
1113 u64 listen_vpp_handle;
1114 svm_msg_q_msg_t msg;
1119 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1120 if (!listen_session)
1121 return VPPCOM_EBADFD;
1123 listen_session_index = listen_session->session_index;
1124 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1127 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1129 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1130 accepted_msg = evt->accepted_msg;
1134 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1135 VCL_SESS_ATTR_NONBLOCK);
1136 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1137 return VPPCOM_EAGAIN;
1141 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1142 return VPPCOM_EAGAIN;
1144 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1145 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1147 clib_warning ("discarded event: %u", e->event_type);
1148 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1151 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1152 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1158 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1159 listen_session = vcl_session_get (wrk, listen_session_index);
1160 client_session = vcl_session_get (wrk, client_session_index);
1162 if (flags & O_NONBLOCK)
1163 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1165 listen_vpp_handle = listen_session->vpp_handle;
1166 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: Got a client request! "
1167 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1168 getpid (), listen_vpp_handle, listen_session_handle,
1169 client_session->vpp_handle, client_session_index,
1170 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1171 VCL_SESS_ATTR_NONBLOCK));
1175 ep->is_ip4 = client_session->transport.is_ip4;
1176 ep->port = client_session->transport.rmt_port;
1177 if (client_session->transport.is_ip4)
1178 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1179 sizeof (ip4_address_t));
1181 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1182 sizeof (ip6_address_t));
1185 if (accepted_msg.server_event_queue_address)
1186 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1189 vpp_evt_q = client_session->vpp_evt_q;
1191 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1192 client_session->vpp_handle, 0);
1194 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: accepted vpp handle 0x%llx, "
1195 "sid %u connection from peer %s address %U port %u to local %s "
1196 "address %U port %u", getpid (), listen_vpp_handle,
1197 listen_session_handle, client_session->vpp_handle,
1198 client_session_index,
1199 client_session->transport.is_ip4 ? "IPv4" : "IPv6",
1200 format_ip46_address, &client_session->transport.rmt_ip,
1201 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1202 clib_net_to_host_u16 (client_session->transport.rmt_port),
1203 client_session->transport.is_ip4 ? "IPv4" : "IPv6",
1204 format_ip46_address, &client_session->transport.lcl_ip,
1205 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1206 clib_net_to_host_u16 (client_session->transport.lcl_port));
1207 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1208 client_session_index);
1210 return vcl_session_handle (client_session);
1214 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1216 vcl_worker_t *wrk = vcl_worker_get_current ();
1217 vcl_session_t *session = 0;
1221 session = vcl_session_get_w_handle (wrk, session_handle);
1223 return VPPCOM_EBADFD;
1224 session_index = session->session_index;
1226 if (PREDICT_FALSE (session->is_vep))
1228 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1229 "connect on an epoll session!", getpid (),
1231 return VPPCOM_EBADFD;
1234 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1236 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
1237 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1238 getpid (), session->vpp_handle, session_handle,
1239 session->transport.is_ip4 ? "IPv4" : "IPv6",
1240 format_ip46_address,
1241 &session->transport.rmt_ip, session->transport.is_ip4 ?
1242 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1243 clib_net_to_host_u16 (session->transport.rmt_port),
1244 session->session_type ? "UDP" : "TCP", session->session_state,
1245 vppcom_session_state_str (session->session_state));
1249 session->transport.is_ip4 = server_ep->is_ip4;
1250 if (session->transport.is_ip4)
1251 clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
1252 sizeof (ip4_address_t));
1254 clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
1255 sizeof (ip6_address_t));
1256 session->transport.rmt_port = server_ep->port;
1258 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
1260 getpid (), session->vpp_handle, session_handle,
1261 session->transport.is_ip4 ? "IPv4" : "IPv6",
1262 format_ip46_address,
1263 &session->transport.rmt_ip, session->transport.is_ip4 ?
1264 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1265 clib_net_to_host_u16 (session->transport.rmt_port),
1266 session->session_type ? "UDP" : "TCP");
1269 * Send connect request and wait for reply from vpp
1271 vppcom_send_connect_sock (session);
1272 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1273 vcm->cfg.session_timeout);
1275 session = vcl_session_get (wrk, session_index);
1277 if (PREDICT_FALSE (rv))
1279 if (VPPCOM_DEBUG > 0)
1282 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1283 "failed! returning %d (%s)", getpid (),
1284 session->vpp_handle, session_handle, rv,
1285 vppcom_retval_str (rv));
1287 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1288 "returning %d (%s)", getpid (),
1289 session_handle, rv, vppcom_retval_str (rv));
1293 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1294 getpid (), session->vpp_handle, session_handle);
1300 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1303 return (e->event_type == FIFO_EVENT_APP_RX
1304 && e->fifo->client_session_index == sid);
1306 return (e->event_type == SESSION_IO_EVT_CT_TX);
1310 vcl_session_is_readable (vcl_session_t * s)
1312 return ((s->session_state & STATE_OPEN)
1313 || (s->session_state == STATE_LISTEN
1314 && s->session_type == VPPCOM_PROTO_UDP));
1318 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1321 vcl_worker_t *wrk = vcl_worker_get_current ();
1322 int n_read = 0, rv, is_nonblocking;
1323 vcl_session_t *s = 0;
1324 svm_fifo_t *rx_fifo;
1325 svm_msg_q_msg_t msg;
1330 if (PREDICT_FALSE (!buf))
1331 return VPPCOM_EINVAL;
1333 s = vcl_session_get_w_handle (wrk, session_handle);
1334 if (PREDICT_FALSE (!s || s->is_vep))
1335 return VPPCOM_EBADFD;
1337 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1339 session_state_t state = s->session_state;
1340 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1342 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! "
1343 "state 0x%x (%s), returning %d (%s)",
1344 getpid (), s->vpp_handle, session_handle, state,
1345 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1349 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1350 is_ct = vcl_session_is_ct (s);
1351 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1352 rx_fifo = s->rx_fifo;
1355 if (svm_fifo_is_empty (rx_fifo))
1359 svm_fifo_unset_event (rx_fifo);
1360 return VPPCOM_EWOULDBLOCK;
1362 while (svm_fifo_is_empty (rx_fifo))
1364 svm_fifo_unset_event (rx_fifo);
1365 svm_msg_q_lock (mq);
1366 if (svm_msg_q_is_empty (mq))
1367 svm_msg_q_wait (mq);
1369 svm_msg_q_sub_w_lock (mq, &msg);
1370 e = svm_msg_q_msg_data (mq, &msg);
1371 svm_msg_q_unlock (mq);
1372 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1374 vcl_handle_mq_event (wrk, e);
1375 svm_msg_q_free_msg (mq, &msg);
1378 svm_msg_q_free_msg (mq, &msg);
1380 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1386 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1388 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1390 if (svm_fifo_is_empty (rx_fifo))
1391 svm_fifo_unset_event (rx_fifo);
1393 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1395 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1396 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1400 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1401 getpid (), s->vpp_handle, session_handle, n_read, rx_fifo);
1407 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1409 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1413 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1415 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1419 vppcom_session_read_segments (uint32_t session_handle,
1420 vppcom_data_segments_t ds)
1422 vcl_worker_t *wrk = vcl_worker_get_current ();
1423 int n_read = 0, rv, is_nonblocking;
1424 vcl_session_t *s = 0;
1425 svm_fifo_t *rx_fifo;
1426 svm_msg_q_msg_t msg;
1431 s = vcl_session_get_w_handle (wrk, session_handle);
1432 if (PREDICT_FALSE (!s || s->is_vep))
1433 return VPPCOM_EBADFD;
1435 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1437 session_state_t state = s->session_state;
1438 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1442 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1443 is_ct = vcl_session_is_ct (s);
1444 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1445 rx_fifo = s->rx_fifo;
1448 if (svm_fifo_is_empty (rx_fifo))
1452 svm_fifo_unset_event (rx_fifo);
1453 return VPPCOM_EWOULDBLOCK;
1455 while (svm_fifo_is_empty (rx_fifo))
1457 svm_fifo_unset_event (rx_fifo);
1458 svm_msg_q_lock (mq);
1459 if (svm_msg_q_is_empty (mq))
1460 svm_msg_q_wait (mq);
1462 svm_msg_q_sub_w_lock (mq, &msg);
1463 e = svm_msg_q_msg_data (mq, &msg);
1464 svm_msg_q_unlock (mq);
1465 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1467 vcl_handle_mq_event (wrk, e);
1468 svm_msg_q_free_msg (mq, &msg);
1471 svm_msg_q_free_msg (mq, &msg);
1473 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1478 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1479 svm_fifo_unset_event (rx_fifo);
1481 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1483 /* If the peer is not polling send notification */
1484 if (!svm_fifo_has_event (s->rx_fifo))
1485 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1486 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1493 vppcom_session_free_segments (uint32_t session_handle,
1494 vppcom_data_segments_t ds)
1496 vcl_worker_t *wrk = vcl_worker_get_current ();
1499 s = vcl_session_get_w_handle (wrk, session_handle);
1500 if (PREDICT_FALSE (!s || s->is_vep))
1503 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1507 vppcom_session_read_ready (vcl_session_t * session)
1509 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1510 if (PREDICT_FALSE (session->is_vep))
1512 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1513 "epoll session!", getpid (), session->session_index);
1514 return VPPCOM_EBADFD;
1517 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1519 session_state_t state = session->session_state;
1522 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1524 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1525 " state 0x%x (%s), returning %d (%s)", getpid (),
1526 session->vpp_handle, session->session_index, state,
1527 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1531 if (session->session_state & STATE_LISTEN)
1532 return clib_fifo_elts (session->accept_evts_fifo);
1534 return svm_fifo_max_dequeue (session->rx_fifo);
1538 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1540 u32 first_copy = clib_min (ds[0].len, max_bytes);
1541 clib_memcpy_fast (buf, ds[0].data, first_copy);
1542 if (first_copy < max_bytes)
1544 clib_memcpy_fast (buf + first_copy, ds[1].data,
1545 clib_min (ds[1].len, max_bytes - first_copy));
1551 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1554 return (e->event_type == FIFO_EVENT_APP_TX
1555 && e->fifo->client_session_index == sid);
1557 return (e->event_type == SESSION_IO_EVT_CT_RX);
1561 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1563 vcl_worker_t *wrk = vcl_worker_get_current ();
1564 int rv, n_write, is_nonblocking;
1565 vcl_session_t *s = 0;
1566 svm_fifo_t *tx_fifo = 0;
1567 session_evt_type_t et;
1568 svm_msg_q_msg_t msg;
1573 if (PREDICT_FALSE (!buf))
1574 return VPPCOM_EINVAL;
1576 s = vcl_session_get_w_handle (wrk, session_handle);
1577 if (PREDICT_FALSE (!s))
1578 return VPPCOM_EBADFD;
1580 if (PREDICT_FALSE (s->is_vep))
1582 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1583 "cannot write to an epoll session!",
1584 getpid (), s->vpp_handle, session_handle);
1586 return VPPCOM_EBADFD;
1589 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1591 session_state_t state = s->session_state;
1592 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1593 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1594 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1595 state, vppcom_session_state_str (state));
1599 tx_fifo = s->tx_fifo;
1600 is_ct = vcl_session_is_ct (s);
1601 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1602 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1603 if (svm_fifo_is_full (tx_fifo))
1607 return VPPCOM_EWOULDBLOCK;
1609 while (svm_fifo_is_full (tx_fifo))
1611 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1612 svm_msg_q_lock (mq);
1613 if (svm_msg_q_is_empty (mq))
1614 svm_msg_q_wait (mq);
1616 svm_msg_q_sub_w_lock (mq, &msg);
1617 e = svm_msg_q_msg_data (mq, &msg);
1618 svm_msg_q_unlock (mq);
1620 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1621 vcl_handle_mq_event (wrk, e);
1622 svm_msg_q_free_msg (mq, &msg);
1626 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1627 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1629 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1630 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1632 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1635 ASSERT (n_write > 0);
1637 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1638 s->vpp_handle, session_handle, n_write);
1643 static vcl_session_t *
1644 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1647 s = vcl_session_get (wrk, f->client_session_index);
1651 if (type == 0 && s->rx_fifo == f)
1654 if (type == 1 && s->tx_fifo == f)
1657 s = vcl_session_get (wrk, f->master_session_index);
1660 if (type == 0 && s->rx_fifo == f)
1662 if (type == 1 && s->tx_fifo == f)
1669 vppcom_session_write_ready (vcl_session_t * session)
1671 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1672 if (PREDICT_FALSE (session->is_vep))
1674 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1675 "cannot write to an epoll session!",
1676 getpid (), session->vpp_handle, session->session_index);
1677 return VPPCOM_EBADFD;
1680 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1682 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1683 "cannot write to a listen session!",
1684 getpid (), session->vpp_handle, session->session_index);
1685 return VPPCOM_EBADFD;
1688 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1690 session_state_t state = session->session_state;
1693 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1694 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1695 "session is not open! state 0x%x (%s), "
1696 "returning %d (%s)", getpid (), session->vpp_handle,
1697 session->session_index,
1698 state, vppcom_session_state_str (state),
1699 rv, vppcom_retval_str (rv));
1703 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1704 getpid (), session->vpp_handle, session->session_index,
1705 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1707 return svm_fifo_max_enqueue (session->tx_fifo);
1711 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1713 svm_msg_q_msg_t *msg;
1717 n_msgs = svm_msg_q_size (mq);
1718 for (i = 0; i < n_msgs; i++)
1720 vec_add2 (wrk->mq_msg_vector, msg, 1);
1721 svm_msg_q_sub_w_lock (mq, msg);
1726 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1727 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1729 svm_fifo_unset_event (_fifo); \
1730 if (svm_fifo_is_empty (_fifo)) \
1735 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1736 unsigned long n_bits, unsigned long *read_map,
1737 unsigned long *write_map,
1738 unsigned long *except_map, u32 * bits_set)
1740 session_disconnected_msg_t *disconnected_msg;
1741 session_connected_msg_t *connected_msg;
1742 session_accepted_msg_t *accepted_msg;
1743 vcl_session_msg_t *vcl_msg;
1744 vcl_session_t *session;
1748 switch (e->event_type)
1750 case FIFO_EVENT_APP_RX:
1751 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1752 sid = e->fifo->client_session_index;
1753 session = vcl_session_get (wrk, sid);
1756 if (sid < n_bits && read_map)
1758 clib_bitmap_set_no_check (read_map, sid, 1);
1762 case FIFO_EVENT_APP_TX:
1763 sid = e->fifo->client_session_index;
1764 session = vcl_session_get (wrk, sid);
1767 if (sid < n_bits && write_map)
1769 clib_bitmap_set_no_check (write_map, sid, 1);
1773 case SESSION_IO_EVT_CT_TX:
1774 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1775 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
1778 sid = session->session_index;
1779 if (sid < n_bits && read_map)
1781 clib_bitmap_set_no_check (read_map, sid, 1);
1785 case SESSION_IO_EVT_CT_RX:
1786 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
1789 sid = session->session_index;
1790 if (sid < n_bits && write_map)
1792 clib_bitmap_set_no_check (write_map, sid, 1);
1796 case SESSION_CTRL_EVT_ACCEPTED:
1797 accepted_msg = (session_accepted_msg_t *) e->data;
1798 handle = accepted_msg->listener_handle;
1799 session = vcl_session_table_lookup_listener (wrk, handle);
1802 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
1803 "listener handle %llx", getpid (), handle);
1807 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
1808 vcl_msg->accepted_msg = *accepted_msg;
1809 sid = session->session_index;
1810 if (sid < n_bits && read_map)
1812 clib_bitmap_set_no_check (read_map, sid, 1);
1816 case SESSION_CTRL_EVT_CONNECTED:
1817 connected_msg = (session_connected_msg_t *) e->data;
1818 vcl_session_connected_handler (wrk, connected_msg);
1820 case SESSION_CTRL_EVT_DISCONNECTED:
1821 disconnected_msg = (session_disconnected_msg_t *) e->data;
1822 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
1823 if (sid < n_bits && except_map)
1825 clib_bitmap_set_no_check (except_map, sid, 1);
1829 case SESSION_CTRL_EVT_RESET:
1830 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
1831 if (sid < n_bits && except_map)
1833 clib_bitmap_set_no_check (except_map, sid, 1);
1838 clib_warning ("unhandled: %u", e->event_type);
1844 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
1845 unsigned long n_bits, unsigned long *read_map,
1846 unsigned long *write_map, unsigned long *except_map,
1847 double time_to_wait, u32 * bits_set)
1849 svm_msg_q_msg_t *msg;
1853 svm_msg_q_lock (mq);
1854 if (svm_msg_q_is_empty (mq))
1858 svm_msg_q_unlock (mq);
1864 svm_msg_q_unlock (mq);
1867 else if (time_to_wait < 0)
1869 svm_msg_q_wait (mq);
1873 if (svm_msg_q_timedwait (mq, time_to_wait))
1875 svm_msg_q_unlock (mq);
1880 vcl_mq_dequeue_batch (wrk, mq);
1881 svm_msg_q_unlock (mq);
1883 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
1885 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
1886 e = svm_msg_q_msg_data (mq, msg);
1887 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
1888 except_map, bits_set);
1889 svm_msg_q_free_msg (mq, msg);
1891 vec_reset_length (wrk->mq_msg_vector);
1896 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
1897 unsigned long *read_map, unsigned long *write_map,
1898 unsigned long *except_map, double time_to_wait,
1901 double total_wait = 0, wait_slice;
1902 vcl_cut_through_registration_t *cr;
1904 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
1905 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
1908 vcl_ct_registration_lock (wrk);
1910 pool_foreach (cr, wrk->cut_through_registrations, ({
1911 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
1915 vcl_ct_registration_unlock (wrk);
1917 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
1918 write_map, except_map, time_to_wait, bits_set);
1919 total_wait += wait_slice;
1923 while (total_wait < time_to_wait);
1929 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
1930 unsigned long *read_map, unsigned long *write_map,
1931 unsigned long *except_map, double time_to_wait,
1934 vcl_mq_evt_conn_t *mqc;
1935 int __clib_unused n_read;
1939 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
1940 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
1941 vec_len (wrk->mq_events), time_to_wait);
1942 for (i = 0; i < n_mq_evts; i++)
1944 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
1945 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
1946 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
1947 except_map, 0, bits_set);
1950 return (n_mq_evts > 0 ? (int) *bits_set : 0);
1954 vppcom_select (unsigned long n_bits, unsigned long *read_map,
1955 unsigned long *write_map, unsigned long *except_map,
1956 double time_to_wait)
1958 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
1959 vcl_worker_t *wrk = vcl_worker_get_current ();
1960 vcl_session_t *session = 0;
1963 ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
1965 if (n_bits && read_map)
1967 clib_bitmap_validate (wrk->rd_bitmap, minbits);
1968 clib_memcpy_fast (wrk->rd_bitmap, read_map,
1969 vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
1970 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
1972 if (n_bits && write_map)
1974 clib_bitmap_validate (wrk->wr_bitmap, minbits);
1975 clib_memcpy_fast (wrk->wr_bitmap, write_map,
1976 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
1977 memset (write_map, 0,
1978 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
1980 if (n_bits && except_map)
1982 clib_bitmap_validate (wrk->ex_bitmap, minbits);
1983 clib_memcpy_fast (wrk->ex_bitmap, except_map,
1984 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
1985 memset (except_map, 0,
1986 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
1996 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
1997 if (!(session = vcl_session_get (wrk, sid)))
1999 if (except_map && sid < minbits)
2000 clib_bitmap_set_no_check (except_map, sid, 1);
2004 rv = svm_fifo_is_full (session->tx_fifo);
2007 clib_bitmap_set_no_check (write_map, sid, 1);
2016 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2017 if (!(session = vcl_session_get (wrk, sid)))
2019 if (except_map && sid < minbits)
2020 clib_bitmap_set_no_check (except_map, sid, 1);
2024 rv = vppcom_session_read_ready (session);
2027 clib_bitmap_set_no_check (read_map, sid, 1);
2035 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2037 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2038 read_map, write_map, except_map, &bits_set);
2040 vec_reset_length (wrk->unhandled_evts_vector);
2042 if (vcm->cfg.use_mq_eventfd)
2043 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2044 time_to_wait, &bits_set);
2046 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2047 time_to_wait, &bits_set);
2053 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2055 vcl_session_t *session;
2056 vppcom_epoll_t *vep;
2059 if (VPPCOM_DEBUG <= 1)
2062 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2063 session = vcl_session_get (wrk, vep_idx);
2064 if (PREDICT_FALSE (!session))
2066 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2067 getpid (), vep_idx);
2070 if (PREDICT_FALSE (!session->is_vep))
2072 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2073 getpid (), vep_idx);
2076 vep = &session->vep;
2077 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2080 " is_vep_session = %u\n"
2081 " next_sid = 0x%x (%u)\n"
2082 " wait_cont_idx = 0x%x (%u)\n"
2083 "}\n", getpid (), vep_idx,
2084 session->is_vep, session->is_vep_session,
2085 vep->next_sh, vep->next_sh,
2086 session->wait_cont_idx, session->wait_cont_idx);
2088 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2090 session = vcl_session_get (wrk, sid);
2091 if (PREDICT_FALSE (!session))
2093 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2096 if (PREDICT_FALSE (session->is_vep))
2097 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2098 getpid (), vep_idx);
2099 else if (PREDICT_FALSE (!session->is_vep_session))
2101 clib_warning ("VCL<%d>: ERROR: session (%u) "
2102 "is not a vep session!", getpid (), sid);
2105 vep = &session->vep;
2106 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2107 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2108 "vep_idx (%u)!", getpid (),
2109 sid, session->vep.vep_sh, vep_idx);
2110 if (session->is_vep_session)
2112 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2114 " next_sid = 0x%x (%u)\n"
2115 " prev_sid = 0x%x (%u)\n"
2116 " vep_idx = 0x%x (%u)\n"
2117 " ev.events = 0x%x\n"
2118 " ev.data.u64 = 0x%llx\n"
2122 vep->next_sh, vep->next_sh,
2123 vep->prev_sh, vep->prev_sh,
2124 vep->vep_sh, vep->vep_sh,
2125 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2130 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2131 getpid (), vep_idx);
2135 vppcom_epoll_create (void)
2137 vcl_worker_t *wrk = vcl_worker_get_current ();
2138 vcl_session_t *vep_session;
2140 vep_session = vcl_session_alloc (wrk);
2142 vep_session->is_vep = 1;
2143 vep_session->vep.vep_sh = ~0;
2144 vep_session->vep.next_sh = ~0;
2145 vep_session->vep.prev_sh = ~0;
2146 vep_session->wait_cont_idx = ~0;
2147 vep_session->vpp_handle = ~0;
2149 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_sh);
2150 VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!",
2151 getpid (), vep_session->session_index, vep_session->session_index);
2153 return vcl_session_handle (vep_session);
2157 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2158 struct epoll_event *event)
2160 vcl_worker_t *wrk = vcl_worker_get_current ();
2161 vcl_session_t *vep_session;
2162 vcl_session_t *session;
2165 if (vep_handle == session_handle)
2167 clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!",
2168 getpid (), vep_handle);
2169 return VPPCOM_EINVAL;
2172 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2173 if (PREDICT_FALSE (!vep_session))
2175 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_handle);
2176 return VPPCOM_EBADFD;
2178 if (PREDICT_FALSE (!vep_session->is_vep))
2180 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2181 getpid (), vep_handle);
2182 return VPPCOM_EINVAL;
2185 ASSERT (vep_session->vep.vep_sh == ~0);
2186 ASSERT (vep_session->vep.prev_sh == ~0);
2188 session = vcl_session_get_w_handle (wrk, session_handle);
2189 if (PREDICT_FALSE (!session))
2191 VDBG (0, "VCL<%d>: ERROR: Invalid session_handle (%u)!",
2192 getpid (), session_handle);
2193 return VPPCOM_EBADFD;
2195 if (PREDICT_FALSE (session->is_vep))
2197 clib_warning ("ERROR: session_handle (%u) is a vep!", vep_handle);
2198 return VPPCOM_EINVAL;
2204 if (PREDICT_FALSE (!event))
2206 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to "
2207 "epoll_event structure!", getpid ());
2208 return VPPCOM_EINVAL;
2210 if (vep_session->vep.next_sh != ~0)
2212 vcl_session_t *next_session;
2213 next_session = vcl_session_get_w_handle (wrk,
2214 vep_session->vep.next_sh);
2215 if (PREDICT_FALSE (!next_session))
2217 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid "
2218 "vep.next_sid (%u) on vep_idx (%u)!",
2219 getpid (), vep_session->vep.next_sh, vep_handle);
2220 return VPPCOM_EBADFD;
2222 ASSERT (next_session->vep.prev_sh == vep_handle);
2223 next_session->vep.prev_sh = session_handle;
2225 session->vep.next_sh = vep_session->vep.next_sh;
2226 session->vep.prev_sh = vep_handle;
2227 session->vep.vep_sh = vep_handle;
2228 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2229 session->vep.ev = *event;
2230 session->is_vep = 0;
2231 session->is_vep_session = 1;
2232 vep_session->vep.next_sh = session_handle;
2234 VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x, "
2235 "data 0x%llx!", getpid (), vep_handle, session_handle,
2236 event->events, event->data.u64);
2237 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2241 if (PREDICT_FALSE (!event))
2243 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to "
2244 "epoll_event structure!", getpid ());
2248 else if (PREDICT_FALSE (!session->is_vep_session))
2250 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2251 "not a vep session!", getpid (), session_handle);
2255 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2257 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2258 "vep_idx (%u) != vep_idx (%u)!",
2259 getpid (), session_handle,
2260 session->vep.vep_sh, vep_handle);
2264 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2265 session->vep.ev = *event;
2266 VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
2267 " data 0x%llx!", getpid (), vep_handle, session_handle,
2268 event->events, event->data.u64);
2272 if (PREDICT_FALSE (!session->is_vep_session))
2274 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2275 "not a vep session!", getpid (), session_handle);
2279 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2281 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2282 "vep_idx (%u) != vep_idx (%u)!",
2283 getpid (), session_handle,
2284 session->vep.vep_sh, vep_handle);
2289 vep_session->wait_cont_idx =
2290 (vep_session->wait_cont_idx == session_handle) ?
2291 session->vep.next_sh : vep_session->wait_cont_idx;
2293 if (session->vep.prev_sh == vep_handle)
2294 vep_session->vep.next_sh = session->vep.next_sh;
2297 vcl_session_t *prev_session;
2298 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2299 if (PREDICT_FALSE (!prev_session))
2301 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2302 "vep.prev_sid (%u) on sid (%u)!",
2303 getpid (), session->vep.prev_sh, session_handle);
2304 return VPPCOM_EBADFD;
2306 ASSERT (prev_session->vep.next_sh == session_handle);
2307 prev_session->vep.next_sh = session->vep.next_sh;
2309 if (session->vep.next_sh != ~0)
2311 vcl_session_t *next_session;
2312 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2313 if (PREDICT_FALSE (!next_session))
2315 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2316 "vep.next_sid (%u) on sid (%u)!",
2317 getpid (), session->vep.next_sh, session_handle);
2318 return VPPCOM_EBADFD;
2320 ASSERT (next_session->vep.prev_sh == session_handle);
2321 next_session->vep.prev_sh = session->vep.prev_sh;
2324 memset (&session->vep, 0, sizeof (session->vep));
2325 session->vep.next_sh = ~0;
2326 session->vep.prev_sh = ~0;
2327 session->vep.vep_sh = ~0;
2328 session->is_vep_session = 0;
2329 VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!",
2330 getpid (), vep_handle, session_handle);
2331 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2335 clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op);
2339 vep_verify_epoll_chain (wrk, vep_handle);
2346 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2347 struct epoll_event *events, u32 * num_ev)
2349 session_disconnected_msg_t *disconnected_msg;
2350 session_connected_msg_t *connected_msg;
2351 session_accepted_msg_t *accepted_msg;
2352 u64 session_evt_data = ~0, handle;
2353 u32 sid = ~0, session_events;
2354 vcl_session_msg_t *vcl_msg;
2355 vcl_session_t *session;
2358 switch (e->event_type)
2360 case FIFO_EVENT_APP_RX:
2361 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2362 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2363 sid = e->fifo->client_session_index;
2364 session = vcl_session_get (wrk, sid);
2365 session_events = session->vep.ev.events;
2366 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2369 events[*num_ev].events |= EPOLLIN;
2370 session_evt_data = session->vep.ev.data.u64;
2371 session->has_rx_evt = 1;
2373 case FIFO_EVENT_APP_TX:
2374 sid = e->fifo->client_session_index;
2375 session = vcl_session_get (wrk, sid);
2376 session_events = session->vep.ev.events;
2377 if (!(EPOLLOUT & session_events))
2380 events[*num_ev].events |= EPOLLOUT;
2381 session_evt_data = session->vep.ev.data.u64;
2383 case SESSION_IO_EVT_CT_TX:
2384 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2385 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2386 sid = session->session_index;
2387 session_events = session->vep.ev.events;
2388 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2391 events[*num_ev].events |= EPOLLIN;
2392 session_evt_data = session->vep.ev.data.u64;
2393 session->has_rx_evt = 1;
2395 case SESSION_IO_EVT_CT_RX:
2396 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2397 sid = session->session_index;
2398 session_events = session->vep.ev.events;
2399 if (!(EPOLLOUT & session_events))
2402 events[*num_ev].events |= EPOLLOUT;
2403 session_evt_data = session->vep.ev.data.u64;
2405 case SESSION_CTRL_EVT_ACCEPTED:
2406 accepted_msg = (session_accepted_msg_t *) e->data;
2407 handle = accepted_msg->listener_handle;
2408 session = vcl_session_table_lookup_listener (wrk, handle);
2411 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
2412 "listener handle %llx", getpid (), handle);
2416 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
2417 vcl_msg->accepted_msg = *accepted_msg;
2418 session_events = session->vep.ev.events;
2419 if (!(EPOLLIN & session_events))
2423 events[*num_ev].events |= EPOLLIN;
2424 session_evt_data = session->vep.ev.data.u64;
2426 case SESSION_CTRL_EVT_CONNECTED:
2427 connected_msg = (session_connected_msg_t *) e->data;
2428 vcl_session_connected_handler (wrk, connected_msg);
2429 /* Generate EPOLLOUT because there's no connected event */
2430 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2431 session = vcl_session_get (wrk, sid);
2432 session_events = session->vep.ev.events;
2433 if (EPOLLOUT & session_events)
2436 events[*num_ev].events |= EPOLLOUT;
2437 session_evt_data = session->vep.ev.data.u64;
2440 case SESSION_CTRL_EVT_DISCONNECTED:
2441 disconnected_msg = (session_disconnected_msg_t *) e->data;
2442 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
2443 if (!(session = vcl_session_get (wrk, sid)))
2446 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2447 session_evt_data = session->vep.ev.data.u64;
2448 session_events = session->vep.ev.events;
2450 case SESSION_CTRL_EVT_RESET:
2451 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2452 if (!(session = vcl_session_get (wrk, sid)))
2455 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2456 session_evt_data = session->vep.ev.data.u64;
2457 session_events = session->vep.ev.events;
2460 VDBG (0, "unhandled: %u", e->event_type);
2466 events[*num_ev].data.u64 = session_evt_data;
2467 if (EPOLLONESHOT & session_events)
2469 session = vcl_session_get (wrk, sid);
2470 session->vep.ev.events = 0;
2477 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2478 struct epoll_event *events, u32 maxevents,
2479 double wait_for_time, u32 * num_ev)
2481 svm_msg_q_msg_t *msg;
2485 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2486 goto handle_dequeued;
2488 svm_msg_q_lock (mq);
2489 if (svm_msg_q_is_empty (mq))
2493 svm_msg_q_unlock (mq);
2496 else if (wait_for_time < 0)
2498 svm_msg_q_wait (mq);
2502 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2504 svm_msg_q_unlock (mq);
2509 vcl_mq_dequeue_batch (wrk, mq);
2510 svm_msg_q_unlock (mq);
2513 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2515 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2516 e = svm_msg_q_msg_data (mq, msg);
2517 if (*num_ev < maxevents)
2518 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2520 vec_add1 (wrk->unhandled_evts_vector, *e);
2521 svm_msg_q_free_msg (mq, msg);
2523 vec_reset_length (wrk->mq_msg_vector);
2529 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2530 int maxevents, u32 n_evts, double wait_for_time)
2532 vcl_cut_through_registration_t *cr;
2533 double total_wait = 0, wait_slice;
2536 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2537 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2541 vcl_ct_registration_lock (wrk);
2543 pool_foreach (cr, wrk->cut_through_registrations, ({
2544 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2547 vcl_ct_registration_unlock (wrk);
2549 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2550 maxevents, n_evts ? 0 : wait_slice,
2553 total_wait += wait_slice;
2557 while (total_wait < wait_for_time);
2562 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2563 int maxevents, u32 n_evts, double wait_for_time)
2565 vcl_mq_evt_conn_t *mqc;
2566 int __clib_unused n_read;
2570 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2572 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2573 vec_len (wrk->mq_events), wait_for_time);
2574 for (i = 0; i < n_mq_evts; i++)
2576 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2577 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2578 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2580 if (!n_evts && n_mq_evts > 0)
2583 return (int) n_evts;
2587 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2588 int maxevents, double wait_for_time)
2590 vcl_worker_t *wrk = vcl_worker_get_current ();
2591 vcl_session_t *vep_session;
2595 if (PREDICT_FALSE (maxevents <= 0))
2597 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2598 getpid (), maxevents);
2599 return VPPCOM_EINVAL;
2602 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2604 return VPPCOM_EBADFD;
2606 if (PREDICT_FALSE (!vep_session->is_vep))
2608 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2609 getpid (), vep_handle);
2610 return VPPCOM_EINVAL;
2613 memset (events, 0, sizeof (*events) * maxevents);
2615 if (vec_len (wrk->unhandled_evts_vector))
2617 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2619 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2621 if (n_evts == maxevents)
2628 vec_delete (wrk->unhandled_evts_vector, i, 0);
2631 if (vcm->cfg.use_mq_eventfd)
2632 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2635 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2640 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2641 void *buffer, uint32_t * buflen)
2643 vcl_worker_t *wrk = vcl_worker_get_current ();
2644 vcl_session_t *session;
2646 u32 *flags = buffer;
2647 vppcom_endpt_t *ep = buffer;
2649 session = vcl_session_get_w_handle (wrk, session_handle);
2651 return VPPCOM_EBADFD;
2655 case VPPCOM_ATTR_GET_NREAD:
2656 rv = vppcom_session_read_ready (session);
2657 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2661 case VPPCOM_ATTR_GET_NWRITE:
2662 rv = vppcom_session_write_ready (session);
2663 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2664 getpid (), session_handle, rv);
2667 case VPPCOM_ATTR_GET_FLAGS:
2668 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2670 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2671 VCL_SESS_ATTR_NONBLOCK));
2672 *buflen = sizeof (*flags);
2673 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2674 "is_nonblocking = %u", getpid (),
2675 session_handle, *flags,
2676 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2682 case VPPCOM_ATTR_SET_FLAGS:
2683 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2685 if (*flags & O_NONBLOCK)
2686 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2688 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2690 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2691 " is_nonblocking = %u",
2692 getpid (), session_handle, *flags,
2693 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2699 case VPPCOM_ATTR_GET_PEER_ADDR:
2700 if (PREDICT_TRUE (buffer && buflen &&
2701 (*buflen >= sizeof (*ep)) && ep->ip))
2703 ep->is_ip4 = session->transport.is_ip4;
2704 ep->port = session->transport.rmt_port;
2705 if (session->transport.is_ip4)
2706 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2707 sizeof (ip4_address_t));
2709 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2710 sizeof (ip6_address_t));
2711 *buflen = sizeof (*ep);
2712 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2713 "addr = %U, port %u", getpid (),
2714 session_handle, ep->is_ip4, format_ip46_address,
2715 &session->transport.rmt_ip,
2716 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2717 clib_net_to_host_u16 (ep->port));
2723 case VPPCOM_ATTR_GET_LCL_ADDR:
2724 if (PREDICT_TRUE (buffer && buflen &&
2725 (*buflen >= sizeof (*ep)) && ep->ip))
2727 ep->is_ip4 = session->transport.is_ip4;
2728 ep->port = session->transport.lcl_port;
2729 if (session->transport.is_ip4)
2730 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
2731 sizeof (ip4_address_t));
2733 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
2734 sizeof (ip6_address_t));
2735 *buflen = sizeof (*ep);
2736 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2737 " addr = %U port %d", getpid (),
2738 session_handle, ep->is_ip4, format_ip46_address,
2739 &session->transport.lcl_ip,
2740 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2741 clib_net_to_host_u16 (ep->port));
2747 case VPPCOM_ATTR_GET_LIBC_EPFD:
2748 rv = session->libc_epfd;
2749 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2753 case VPPCOM_ATTR_SET_LIBC_EPFD:
2754 if (PREDICT_TRUE (buffer && buflen &&
2755 (*buflen == sizeof (session->libc_epfd))))
2757 session->libc_epfd = *(int *) buffer;
2758 *buflen = sizeof (session->libc_epfd);
2760 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2761 "buflen %d", getpid (), session->libc_epfd, *buflen);
2767 case VPPCOM_ATTR_GET_PROTOCOL:
2768 if (buffer && buflen && (*buflen >= sizeof (int)))
2770 *(int *) buffer = session->session_type;
2771 *buflen = sizeof (int);
2773 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2774 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
2781 case VPPCOM_ATTR_GET_LISTEN:
2782 if (buffer && buflen && (*buflen >= sizeof (int)))
2784 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2785 VCL_SESS_ATTR_LISTEN);
2786 *buflen = sizeof (int);
2788 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
2789 getpid (), *(int *) buffer, *buflen);
2795 case VPPCOM_ATTR_GET_ERROR:
2796 if (buffer && buflen && (*buflen >= sizeof (int)))
2798 *(int *) buffer = 0;
2799 *buflen = sizeof (int);
2801 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
2802 getpid (), *(int *) buffer, *buflen);
2808 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
2809 if (buffer && buflen && (*buflen >= sizeof (u32)))
2813 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
2814 session->tx_fifo ? session->tx_fifo->nitems :
2815 vcm->cfg.tx_fifo_size);
2816 *buflen = sizeof (u32);
2818 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
2819 "buflen %d, #VPP-TBD#", getpid (),
2820 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2826 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
2827 if (buffer && buflen && (*buflen == sizeof (u32)))
2830 session->sndbuf_size = *(u32 *) buffer;
2831 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
2832 "buflen %d, #VPP-TBD#", getpid (),
2833 session->sndbuf_size, session->sndbuf_size, *buflen);
2839 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
2840 if (buffer && buflen && (*buflen >= sizeof (u32)))
2844 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
2845 session->rx_fifo ? session->rx_fifo->nitems :
2846 vcm->cfg.rx_fifo_size);
2847 *buflen = sizeof (u32);
2849 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
2850 "buflen %d, #VPP-TBD#", getpid (),
2851 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2857 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
2858 if (buffer && buflen && (*buflen == sizeof (u32)))
2861 session->rcvbuf_size = *(u32 *) buffer;
2862 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
2863 "buflen %d, #VPP-TBD#", getpid (),
2864 session->sndbuf_size, session->sndbuf_size, *buflen);
2870 case VPPCOM_ATTR_GET_REUSEADDR:
2871 if (buffer && buflen && (*buflen >= sizeof (int)))
2874 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2875 VCL_SESS_ATTR_REUSEADDR);
2876 *buflen = sizeof (int);
2878 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
2879 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2885 case VPPCOM_ATTR_SET_REUSEADDR:
2886 if (buffer && buflen && (*buflen == sizeof (int)) &&
2887 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
2890 if (*(int *) buffer)
2891 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
2893 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
2895 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
2896 " #VPP-TBD#", getpid (),
2897 VCL_SESS_ATTR_TEST (session->attr,
2898 VCL_SESS_ATTR_REUSEADDR), *buflen);
2904 case VPPCOM_ATTR_GET_REUSEPORT:
2905 if (buffer && buflen && (*buflen >= sizeof (int)))
2908 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2909 VCL_SESS_ATTR_REUSEPORT);
2910 *buflen = sizeof (int);
2912 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
2913 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2919 case VPPCOM_ATTR_SET_REUSEPORT:
2920 if (buffer && buflen && (*buflen == sizeof (int)) &&
2921 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
2924 if (*(int *) buffer)
2925 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
2927 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
2929 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
2930 " #VPP-TBD#", getpid (),
2931 VCL_SESS_ATTR_TEST (session->attr,
2932 VCL_SESS_ATTR_REUSEPORT), *buflen);
2938 case VPPCOM_ATTR_GET_BROADCAST:
2939 if (buffer && buflen && (*buflen >= sizeof (int)))
2942 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2943 VCL_SESS_ATTR_BROADCAST);
2944 *buflen = sizeof (int);
2946 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
2947 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2953 case VPPCOM_ATTR_SET_BROADCAST:
2954 if (buffer && buflen && (*buflen == sizeof (int)))
2957 if (*(int *) buffer)
2958 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
2960 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
2962 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
2963 "#VPP-TBD#", getpid (),
2964 VCL_SESS_ATTR_TEST (session->attr,
2965 VCL_SESS_ATTR_BROADCAST), *buflen);
2971 case VPPCOM_ATTR_GET_V6ONLY:
2972 if (buffer && buflen && (*buflen >= sizeof (int)))
2975 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2976 VCL_SESS_ATTR_V6ONLY);
2977 *buflen = sizeof (int);
2979 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
2980 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2986 case VPPCOM_ATTR_SET_V6ONLY:
2987 if (buffer && buflen && (*buflen == sizeof (int)))
2990 if (*(int *) buffer)
2991 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
2993 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
2995 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
2996 "#VPP-TBD#", getpid (),
2997 VCL_SESS_ATTR_TEST (session->attr,
2998 VCL_SESS_ATTR_V6ONLY), *buflen);
3004 case VPPCOM_ATTR_GET_KEEPALIVE:
3005 if (buffer && buflen && (*buflen >= sizeof (int)))
3008 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3009 VCL_SESS_ATTR_KEEPALIVE);
3010 *buflen = sizeof (int);
3012 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3013 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3019 case VPPCOM_ATTR_SET_KEEPALIVE:
3020 if (buffer && buflen && (*buflen == sizeof (int)))
3023 if (*(int *) buffer)
3024 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3026 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3028 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3029 "#VPP-TBD#", getpid (),
3030 VCL_SESS_ATTR_TEST (session->attr,
3031 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3037 case VPPCOM_ATTR_GET_TCP_NODELAY:
3038 if (buffer && buflen && (*buflen >= sizeof (int)))
3041 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3042 VCL_SESS_ATTR_TCP_NODELAY);
3043 *buflen = sizeof (int);
3045 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3046 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3052 case VPPCOM_ATTR_SET_TCP_NODELAY:
3053 if (buffer && buflen && (*buflen == sizeof (int)))
3056 if (*(int *) buffer)
3057 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3059 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3061 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3062 "#VPP-TBD#", getpid (),
3063 VCL_SESS_ATTR_TEST (session->attr,
3064 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3070 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3071 if (buffer && buflen && (*buflen >= sizeof (int)))
3074 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3075 VCL_SESS_ATTR_TCP_KEEPIDLE);
3076 *buflen = sizeof (int);
3078 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3079 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3085 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3086 if (buffer && buflen && (*buflen == sizeof (int)))
3089 if (*(int *) buffer)
3090 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3092 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3094 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3095 "#VPP-TBD#", getpid (),
3096 VCL_SESS_ATTR_TEST (session->attr,
3097 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3103 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3104 if (buffer && buflen && (*buflen >= sizeof (int)))
3107 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3108 VCL_SESS_ATTR_TCP_KEEPINTVL);
3109 *buflen = sizeof (int);
3111 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3112 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3118 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3119 if (buffer && buflen && (*buflen == sizeof (int)))
3122 if (*(int *) buffer)
3123 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3125 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3127 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3128 "#VPP-TBD#", getpid (),
3129 VCL_SESS_ATTR_TEST (session->attr,
3130 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3136 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3137 if (buffer && buflen && (*buflen >= sizeof (u32)))
3140 *(u32 *) buffer = session->user_mss;
3141 *buflen = sizeof (int);
3143 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3144 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3150 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3151 if (buffer && buflen && (*buflen == sizeof (u32)))
3154 session->user_mss = *(u32 *) buffer;
3156 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3157 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3163 case VPPCOM_ATTR_GET_REFCNT:
3164 rv = vcl_session_get_refcnt (session);
3176 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3177 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3179 vcl_worker_t *wrk = vcl_worker_get_current ();
3181 vcl_session_t *session = 0;
3185 session = vcl_session_get_w_handle (wrk, session_handle);
3186 if (PREDICT_FALSE (!session))
3188 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3189 getpid (), session_handle);
3190 return VPPCOM_EBADFD;
3192 ep->is_ip4 = session->transport.is_ip4;
3193 ep->port = session->transport.rmt_port;
3197 rv = vppcom_session_read (session_handle, buffer, buflen);
3198 else if (flags & MSG_PEEK)
3199 rv = vppcom_session_peek (session_handle, buffer, buflen);
3202 clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d",
3204 return VPPCOM_EAFNOSUPPORT;
3209 if (session->transport.is_ip4)
3210 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3211 sizeof (ip4_address_t));
3213 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3214 sizeof (ip6_address_t));
3221 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3222 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3225 return VPPCOM_EINVAL;
3230 return VPPCOM_EINVAL;
3235 // TBD check the flags and do the right thing
3236 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3237 getpid (), flags, flags);
3240 return (vppcom_session_write (session_handle, buffer, buflen));
3244 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3246 vcl_worker_t *wrk = vcl_worker_get_current ();
3247 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3248 u32 i, keep_trying = 1;
3249 svm_msg_q_msg_t msg;
3253 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3254 getpid (), vp, n_sids, wait_for_time);
3257 return VPPCOM_EFAULT;
3261 vcl_session_t *session;
3263 /* Dequeue all events and drop all unhandled io events */
3264 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3266 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3267 vcl_handle_mq_event (wrk, e);
3268 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3270 vec_reset_length (wrk->unhandled_evts_vector);
3272 for (i = 0; i < n_sids; i++)
3274 session = vcl_session_get (wrk, vp[i].sid);
3277 vp[i].revents = POLLHUP;
3284 if (POLLIN & vp[i].events)
3286 rv = vppcom_session_read_ready (session);
3289 vp[i].revents |= POLLIN;
3296 case VPPCOM_ECONNRESET:
3297 vp[i].revents = POLLHUP;
3301 vp[i].revents = POLLERR;
3308 if (POLLOUT & vp[i].events)
3310 rv = vppcom_session_write_ready (session);
3313 vp[i].revents |= POLLOUT;
3320 case VPPCOM_ECONNRESET:
3321 vp[i].revents = POLLHUP;
3325 vp[i].revents = POLLERR;
3332 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3334 vp[i].revents = POLLNVAL;
3338 if (wait_for_time != -1)
3339 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3341 while ((num_ev == 0) && keep_trying);
3343 if (VPPCOM_DEBUG > 3)
3345 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3346 for (i = 0; i < n_sids; i++)
3348 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3349 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3350 vp[i].events, vp[i].revents);
3357 vppcom_mq_epoll_fd (void)
3359 vcl_worker_t *wrk = vcl_worker_get_current ();
3360 return wrk->mqs_epfd;
3364 vppcom_session_index (uint32_t session_handle)
3366 return session_handle & 0xFFFFFF;
3370 vppcom_session_handle (uint32_t session_index)
3372 return (vcl_get_worker_index () << 24) | session_index;
3376 vppcom_worker_register (void)
3378 if (!vcl_worker_alloc_and_init ())
3379 return VPPCOM_EEXIST;
3381 if (vcl_worker_set_bapi ())
3382 return VPPCOM_EEXIST;
3384 if (vcl_worker_register_with_vpp ())
3385 return VPPCOM_EEXIST;
3391 vppcom_worker_index (void)
3393 return vcl_get_worker_index ();
3397 * fd.io coding-style-patch-verification: ON
3400 * eval: (c-set-style "gnu")