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 (&session->transport.rmt_ip, mp->ip, sizeof (ip46_address_t));
316 vcl_session_table_add_vpp_handle (wrk, mp->handle, session->session_index);
317 session->transport.lcl_port = listen_session->transport.lcl_port;
318 session->transport.lcl_ip = listen_session->transport.lcl_ip;
319 session->session_type = listen_session->session_type;
320 session->is_dgram = session->session_type == VPPCOM_PROTO_UDP;
322 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: client accept request from %s"
323 " address %U port %d queue %p!", getpid (), mp->handle,
324 session->session_index,
325 mp->is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &mp->ip,
326 mp->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
327 clib_net_to_host_u16 (mp->port), session->vpp_evt_q);
328 vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index);
330 return session->session_index;
334 vcl_session_connected_handler (vcl_worker_t * wrk,
335 session_connected_msg_t * mp)
337 u32 session_index, vpp_wrk_index;
338 svm_fifo_t *rx_fifo, *tx_fifo;
339 vcl_session_t *session = 0;
342 session_index = mp->context;
343 session = vcl_session_get (wrk, session_index);
346 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
347 "Invalid session index (%u)!",
348 getpid (), mp->handle, session_index);
349 return VCL_INVALID_SESSION_INDEX;
353 clib_warning ("VCL<%d>: ERROR: sid %u: connect failed! %U", getpid (),
354 session_index, format_api_error, ntohl (mp->retval));
355 session->session_state = STATE_FAILED;
356 session->vpp_handle = mp->handle;
357 return session_index;
360 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
361 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
362 vcl_wait_for_memory (rx_fifo);
363 rx_fifo->client_session_index = session_index;
364 tx_fifo->client_session_index = session_index;
365 rx_fifo->client_thread_index = vcl_get_worker_index ();
366 tx_fifo->client_thread_index = vcl_get_worker_index ();
368 if (mp->client_event_queue_address)
370 session->vpp_evt_q = uword_to_pointer (mp->server_event_queue_address,
372 session->our_evt_q = uword_to_pointer (mp->client_event_queue_address,
375 vec_validate (wrk->vpp_event_queues, 0);
376 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
377 wrk->vpp_event_queues[0] = evt_q;
381 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
383 vpp_wrk_index = tx_fifo->master_thread_index;
384 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
385 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
388 session->rx_fifo = rx_fifo;
389 session->tx_fifo = tx_fifo;
390 session->vpp_handle = mp->handle;
391 session->transport.is_ip4 = mp->is_ip4;
392 clib_memcpy (&session->transport.lcl_ip, mp->lcl_ip,
393 sizeof (session->transport.lcl_ip));
394 session->transport.lcl_port = mp->lcl_port;
395 session->session_state = STATE_CONNECT;
397 /* Add it to lookup table */
398 hash_set (wrk->session_index_by_vpp_handles, mp->handle, session_index);
400 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: connect succeeded! "
401 "session_rx_fifo %p, refcnt %d, session_tx_fifo %p, refcnt %d",
402 getpid (), mp->handle, session_index, session->rx_fifo,
403 session->rx_fifo->refcnt, session->tx_fifo, session->tx_fifo->refcnt);
405 return session_index;
409 vcl_session_reset_handler (vcl_worker_t * wrk,
410 session_reset_msg_t * reset_msg)
412 vcl_session_t *session;
415 sid = vcl_session_index_from_vpp_handle (wrk, reset_msg->handle);
416 session = vcl_session_get (wrk, sid);
419 VDBG (0, "request to reset unknown handle 0x%llx", reset_msg->handle);
420 return VCL_INVALID_SESSION_INDEX;
422 session->session_state = STATE_CLOSE_ON_EMPTY;
423 VDBG (0, "reset handle 0x%llx, sid %u ", reset_msg->handle, sid);
424 vcl_send_session_reset_reply (vcl_session_vpp_evt_q (wrk, session),
425 vcm->my_client_index, reset_msg->handle, 0);
430 vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp)
432 vcl_session_t *session;
433 u32 sid = mp->context;
435 session = vcl_session_get (wrk, sid);
438 VDBG (0, "VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: bind failed: %U",
439 getpid (), mp->handle, sid, format_api_error, ntohl (mp->retval));
442 session->session_state = STATE_FAILED;
443 session->vpp_handle = mp->handle;
448 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
449 "Invalid session index (%u)!",
450 getpid (), mp->handle, sid);
451 return VCL_INVALID_SESSION_INDEX;
455 session->vpp_handle = mp->handle;
456 session->transport.is_ip4 = mp->lcl_is_ip4;
457 clib_memcpy (&session->transport.lcl_ip, mp->lcl_ip,
458 sizeof (ip46_address_t));
459 session->transport.lcl_port = mp->lcl_port;
460 vcl_session_table_add_listener (wrk, mp->handle, sid);
461 session->session_state = STATE_LISTEN;
463 if (session->is_dgram)
465 svm_fifo_t *rx_fifo, *tx_fifo;
466 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
467 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
468 rx_fifo->client_session_index = sid;
469 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
470 tx_fifo->client_session_index = sid;
471 session->rx_fifo = rx_fifo;
472 session->tx_fifo = tx_fifo;
475 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: bind succeeded!",
476 getpid (), mp->handle, sid);
481 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
483 session_accepted_msg_t *accepted_msg;
484 session_disconnected_msg_t *disconnected_msg;
485 vcl_session_msg_t *vcl_msg;
486 vcl_session_t *session;
490 switch (e->event_type)
492 case FIFO_EVENT_APP_RX:
493 case FIFO_EVENT_APP_TX:
494 case SESSION_IO_EVT_CT_RX:
495 case SESSION_IO_EVT_CT_TX:
496 vec_add1 (wrk->unhandled_evts_vector, *e);
498 case SESSION_CTRL_EVT_ACCEPTED:
499 accepted_msg = (session_accepted_msg_t *) e->data;
500 handle = accepted_msg->listener_handle;
501 session = vcl_session_table_lookup_listener (wrk, handle);
504 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
505 "listener handle %llx", getpid (), handle);
509 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
510 vcl_msg->accepted_msg = *accepted_msg;
512 case SESSION_CTRL_EVT_CONNECTED:
513 vcl_session_connected_handler (wrk,
514 (session_connected_msg_t *) e->data);
516 case SESSION_CTRL_EVT_DISCONNECTED:
517 disconnected_msg = (session_disconnected_msg_t *) e->data;
518 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
519 session = vcl_session_get (wrk, sid);
522 VDBG (0, "request to disconnect unknown handle 0x%llx",
523 disconnected_msg->handle);
526 session->session_state = STATE_DISCONNECT;
527 VDBG (0, "disconnected handle 0x%llx, sid %u", disconnected_msg->handle,
530 case SESSION_CTRL_EVT_RESET:
531 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
533 case SESSION_CTRL_EVT_BOUND:
534 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
537 clib_warning ("unhandled %u", e->event_type);
543 vppcom_wait_for_session_state_change (u32 session_index,
544 session_state_t state,
547 vcl_worker_t *wrk = vcl_worker_get_current ();
548 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
549 vcl_session_t *volatile session;
555 session = vcl_session_get (wrk, session_index);
556 if (PREDICT_FALSE (!session))
558 return VPPCOM_EBADFD;
560 if (session->session_state & state)
564 if (session->session_state & STATE_FAILED)
566 return VPPCOM_ECONNREFUSED;
569 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
571 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
572 vcl_handle_mq_event (wrk, e);
573 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
575 while (clib_time_now (&wrk->clib_time) < timeout);
577 VDBG (0, "VCL<%d>: timeout waiting for state 0x%x (%s)", getpid (), state,
578 vppcom_session_state_str (state));
579 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
581 return VPPCOM_ETIMEDOUT;
585 vppcom_app_session_enable (void)
589 if (vcm->app_state != STATE_APP_ENABLED)
591 vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
592 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
593 if (PREDICT_FALSE (rv))
595 VDBG (0, "VCL<%d>: application session enable timed out! "
596 "returning %d (%s)", getpid (), rv, vppcom_retval_str (rv));
604 vppcom_app_attach (void)
608 vppcom_app_send_attach ();
609 rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED);
610 if (PREDICT_FALSE (rv))
612 VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)",
613 getpid (), rv, vppcom_retval_str (rv));
621 vppcom_session_unbind (u32 session_handle)
623 vcl_worker_t *wrk = vcl_worker_get_current ();
624 vcl_session_t *session = 0;
627 session = vcl_session_get_w_handle (wrk, session_handle);
629 return VPPCOM_EBADFD;
631 vpp_handle = session->vpp_handle;
632 vcl_session_table_del_listener (wrk, vpp_handle);
633 session->vpp_handle = ~0;
634 session->session_state = STATE_DISCONNECT;
636 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state"
637 " 0x%x (%s)", getpid (), vpp_handle, session_handle, STATE_DISCONNECT,
638 vppcom_session_state_str (STATE_DISCONNECT));
639 vcl_evt (VCL_EVT_UNBIND, session);
640 vppcom_send_unbind_sock (vpp_handle);
646 vppcom_session_disconnect (u32 session_handle)
648 vcl_worker_t *wrk = vcl_worker_get_current ();
649 svm_msg_q_t *vpp_evt_q;
650 vcl_session_t *session;
651 session_state_t state;
654 session = vcl_session_get_w_handle (wrk, session_handle);
656 return VPPCOM_EBADFD;
658 vpp_handle = session->vpp_handle;
659 state = session->session_state;
661 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (),
662 vpp_handle, session_handle, state, vppcom_session_state_str (state));
664 if (PREDICT_FALSE (state & STATE_LISTEN))
666 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
667 "Cannot disconnect a listen socket!",
668 getpid (), vpp_handle, session_handle);
669 return VPPCOM_EBADFD;
672 if (state & STATE_CLOSE_ON_EMPTY)
674 vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
675 vcl_send_session_disconnected_reply (vpp_evt_q, vcm->my_client_index,
677 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect "
678 "REPLY...", getpid (), vpp_handle, session_handle);
682 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...",
683 getpid (), vpp_handle, session_handle);
684 vppcom_send_disconnect_session (vpp_handle);
691 * VPPCOM Public API functions
694 vppcom_app_create (char *app_name)
696 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
702 vppcom_cfg (&vcm->cfg);
705 vcm->main_cpu = pthread_self ();
706 vppcom_init_error_string_table ();
707 svm_fifo_segment_main_init (vcl_cfg->segment_baseva,
708 20 /* timeout in secs */ );
709 pool_init_fixed (vcm->workers, vcl_cfg->max_workers);
710 clib_spinlock_init (&vcm->workers_lock);
711 vcl_worker_alloc_and_init ();
714 if (vcm->my_client_index == ~0)
716 /* API hookup and connect to VPP */
717 vppcom_api_hookup ();
719 vcm->app_state = STATE_APP_START;
720 rv = vppcom_connect_to_vpp (app_name);
723 clib_warning ("VCL<%d>: ERROR: couldn't connect to VPP!",
728 VDBG (0, "VCL<%d>: sending session enable", getpid ());
729 rv = vppcom_app_session_enable ();
732 clib_warning ("VCL<%d>: ERROR: vppcom_app_session_enable() "
733 "failed!", getpid ());
737 VDBG (0, "VCL<%d>: sending app attach", getpid ());
738 rv = vppcom_app_attach ();
741 clib_warning ("VCL<%d>: ERROR: vppcom_app_attach() failed!",
746 VDBG (0, "VCL<%d>: app_name '%s', my_client_index %d (0x%x)",
747 getpid (), app_name, vcm->my_client_index, vcm->my_client_index);
754 vppcom_app_destroy (void)
757 f64 orig_app_timeout;
759 if (vcm->my_client_index == ~0)
762 VDBG (0, "VCL<%d>: detaching from VPP, my_client_index %d (0x%x)",
763 getpid (), vcm->my_client_index, vcm->my_client_index);
764 vcl_evt (VCL_EVT_DETACH, vcm);
766 vppcom_app_send_detach ();
767 orig_app_timeout = vcm->cfg.app_timeout;
768 vcm->cfg.app_timeout = 2.0;
769 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
770 vcm->cfg.app_timeout = orig_app_timeout;
771 if (PREDICT_FALSE (rv))
772 VDBG (0, "VCL<%d>: application detach timed out! returning %d (%s)",
773 getpid (), rv, vppcom_retval_str (rv));
776 vl_client_disconnect_from_vlib ();
777 vcm->my_client_index = ~0;
778 vcm->app_state = STATE_APP_START;
782 vppcom_session_create (u8 proto, u8 is_nonblocking)
784 vcl_worker_t *wrk = vcl_worker_get_current ();
785 vcl_session_t *session;
787 session = vcl_session_alloc (wrk);
789 session->session_type = proto;
790 session->session_state = STATE_START;
791 session->vpp_handle = ~0;
792 session->is_dgram = proto == VPPCOM_PROTO_UDP;
795 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
797 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
798 is_nonblocking, session_index);
800 VDBG (0, "VCL<%d>: sid %u", getpid (), session->session_index);
802 return vcl_session_handle (session);
806 vppcom_session_close (uint32_t session_handle)
808 vcl_worker_t *wrk = vcl_worker_get_current ();
809 vcl_session_t *session = 0;
810 u8 is_vep, is_vep_session;
811 session_state_t state;
816 session = vcl_session_get_w_handle (wrk, session_handle);
818 return VPPCOM_EBADFD;
820 is_vep = session->is_vep;
821 is_vep_session = session->is_vep_session;
822 next_sh = session->vep.next_sh;
823 vep_sh = session->vep.vep_sh;
824 state = session->session_state;
825 vpp_handle = session->vpp_handle;
827 if (VPPCOM_DEBUG > 0)
830 clib_warning ("VCL<%d>: vep_idx %u / sid %u: "
831 "closing epoll session...",
832 getpid (), session_handle, session_handle);
834 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %d: "
835 "closing session...",
836 getpid (), vpp_handle, session_handle);
841 while (next_sh != ~0)
843 rv = vppcom_epoll_ctl (session_handle, EPOLL_CTL_DEL, next_sh, 0);
844 if (PREDICT_FALSE (rv < 0))
845 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL "
846 "vep_idx %u failed! rv %d (%s)",
847 getpid (), vpp_handle, next_sh, vep_sh,
848 rv, vppcom_retval_str (rv));
850 next_sh = session->vep.next_sh;
857 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, session_handle, 0);
859 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL "
860 "vep_idx %u failed! rv %d (%s)",
861 getpid (), vpp_handle, session_handle,
862 vep_sh, rv, vppcom_retval_str (rv));
865 if (state & STATE_LISTEN)
867 rv = vppcom_session_unbind (session_handle);
868 if (PREDICT_FALSE (rv < 0))
869 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: listener unbind "
870 "failed! rv %d (%s)",
871 getpid (), vpp_handle, session_handle,
872 rv, vppcom_retval_str (rv));
874 else if (state & STATE_OPEN)
876 rv = vppcom_session_disconnect (session_handle);
877 if (PREDICT_FALSE (rv < 0))
878 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
879 "session disconnect failed! rv %d (%s)",
880 getpid (), vpp_handle, session_handle,
881 rv, vppcom_retval_str (rv));
885 if (vcl_session_is_ct (session))
887 vcl_cut_through_registration_t *ctr;
890 mq_addr = pointer_to_uword (session->our_evt_q);
891 ctr = vcl_ct_registration_lock_and_lookup (wrk, mq_addr);
893 if (ctr->epoll_evt_conn_index != ~0)
894 vcl_mq_epoll_del_evfd (wrk, ctr->epoll_evt_conn_index);
895 VDBG (0, "Removing ct registration %u",
896 vcl_ct_registration_index (wrk, ctr));
897 vcl_ct_registration_del (wrk, ctr);
898 vcl_ct_registration_lookup_del (wrk, mq_addr);
899 vcl_ct_registration_unlock (wrk);
902 if (vpp_handle != ~0)
904 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
906 vcl_session_free (wrk, session);
908 if (VPPCOM_DEBUG > 0)
911 clib_warning ("VCL<%d>: vep_idx %u / sid %u: epoll session removed.",
912 getpid (), session_handle, session_handle);
914 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: session removed.",
915 getpid (), vpp_handle, session_handle);
918 vcl_evt (VCL_EVT_CLOSE, session, rv);
924 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
926 vcl_worker_t *wrk = vcl_worker_get_current ();
927 vcl_session_t *session = 0;
930 return VPPCOM_EINVAL;
932 session = vcl_session_get_w_handle (wrk, session_handle);
934 return VPPCOM_EBADFD;
938 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
939 "bind to an epoll session!", getpid (), session_handle);
940 return VPPCOM_EBADFD;
943 session->transport.is_ip4 = ep->is_ip4;
945 clib_memcpy (&session->transport.lcl_ip.ip4, ep->ip,
946 sizeof (ip4_address_t));
948 clib_memcpy (&session->transport.lcl_ip.ip6, ep->ip,
949 sizeof (ip6_address_t));
950 session->transport.lcl_port = ep->port;
952 VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
953 "proto %s", getpid (), session_handle,
954 session->transport.is_ip4 ? "IPv4" : "IPv6",
955 format_ip46_address, &session->transport.lcl_ip,
956 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
957 clib_net_to_host_u16 (session->transport.lcl_port),
958 session->session_type ? "UDP" : "TCP");
959 vcl_evt (VCL_EVT_BIND, session);
961 if (session->session_type == VPPCOM_PROTO_UDP)
962 vppcom_session_listen (session_handle, 10);
968 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
970 vcl_worker_t *wrk = vcl_worker_get_current ();
971 vcl_session_t *listen_session = 0;
972 u64 listen_vpp_handle;
975 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
977 return VPPCOM_EBADFD;
979 if (q_len == 0 || q_len == ~0)
980 q_len = vcm->cfg.listen_queue_size;
982 if (listen_session->is_vep)
984 clib_warning ("VCL<%d>: ERROR: sid %u: cannot listen on an "
985 "epoll session!", getpid (), listen_sh);
986 return VPPCOM_EBADFD;
989 listen_vpp_handle = listen_session->vpp_handle;
990 if (listen_session->session_state & STATE_LISTEN)
992 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: already in listen state!",
993 getpid (), listen_vpp_handle, listen_sh);
997 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: sending VPP bind+listen "
998 "request...", getpid (), listen_vpp_handle, listen_sh);
1001 * Send listen request to vpp and wait for reply
1003 vppcom_send_bind_sock (listen_session);
1004 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1006 vcm->cfg.session_timeout);
1008 if (PREDICT_FALSE (rv))
1010 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1011 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: bind+listen failed! "
1012 "returning %d (%s)", getpid (), listen_session->vpp_handle,
1013 listen_sh, rv, vppcom_retval_str (rv));
1021 validate_args_session_accept_ (vcl_worker_t * wrk,
1022 vcl_session_t * listen_session)
1024 /* Input validation - expects spinlock on sessions_lockp */
1025 if (listen_session->is_vep)
1027 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1028 "epoll session!", getpid (),
1029 listen_session->session_index);
1030 return VPPCOM_EBADFD;
1033 if (listen_session->session_state != STATE_LISTEN)
1035 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1036 "not in listen state! state 0x%x (%s)", getpid (),
1037 listen_session->vpp_handle, listen_session->session_index,
1038 listen_session->session_state,
1039 vppcom_session_state_str (listen_session->session_state));
1040 return VPPCOM_EBADFD;
1046 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1049 u32 client_session_index = ~0, listen_session_index;
1050 vcl_worker_t *wrk = vcl_worker_get_current ();
1051 session_accepted_msg_t accepted_msg;
1052 vcl_session_t *listen_session = 0;
1053 vcl_session_t *client_session = 0;
1054 svm_msg_q_t *vpp_evt_q;
1055 vcl_session_msg_t *evt;
1056 u64 listen_vpp_handle;
1057 svm_msg_q_msg_t msg;
1062 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1063 if (!listen_session)
1064 return VPPCOM_EBADFD;
1066 listen_session_index = listen_session->session_index;
1067 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1070 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1072 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1073 accepted_msg = evt->accepted_msg;
1077 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1078 VCL_SESS_ATTR_NONBLOCK);
1079 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1080 return VPPCOM_EAGAIN;
1084 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1085 return VPPCOM_EAGAIN;
1087 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1088 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1090 clib_warning ("discarded event: %u", e->event_type);
1091 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1094 clib_memcpy (&accepted_msg, e->data, sizeof (accepted_msg));
1095 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1101 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1102 listen_session = vcl_session_get (wrk, listen_session_index);
1103 client_session = vcl_session_get (wrk, client_session_index);
1105 if (flags & O_NONBLOCK)
1106 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1108 listen_vpp_handle = listen_session->vpp_handle;
1109 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: Got a client request! "
1110 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1111 getpid (), listen_vpp_handle, listen_session_handle,
1112 client_session->vpp_handle, client_session_index,
1113 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1114 VCL_SESS_ATTR_NONBLOCK));
1118 ep->is_ip4 = client_session->transport.is_ip4;
1119 ep->port = client_session->transport.rmt_port;
1120 if (client_session->transport.is_ip4)
1121 clib_memcpy (ep->ip, &client_session->transport.rmt_ip.ip4,
1122 sizeof (ip4_address_t));
1124 clib_memcpy (ep->ip, &client_session->transport.rmt_ip.ip6,
1125 sizeof (ip6_address_t));
1128 if (accepted_msg.server_event_queue_address)
1129 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1132 vpp_evt_q = client_session->vpp_evt_q;
1134 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1135 client_session->vpp_handle, 0);
1137 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: accepted vpp handle 0x%llx, "
1138 "sid %u connection from peer %s address %U port %u to local %s "
1139 "address %U port %u", getpid (), listen_vpp_handle,
1140 listen_session_handle, client_session->vpp_handle,
1141 client_session_index,
1142 client_session->transport.is_ip4 ? "IPv4" : "IPv6",
1143 format_ip46_address, &client_session->transport.rmt_ip,
1144 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1145 clib_net_to_host_u16 (client_session->transport.rmt_port),
1146 client_session->transport.is_ip4 ? "IPv4" : "IPv6",
1147 format_ip46_address, &client_session->transport.lcl_ip,
1148 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1149 clib_net_to_host_u16 (client_session->transport.lcl_port));
1150 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1151 client_session_index);
1153 return vcl_session_handle (client_session);
1157 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1159 vcl_worker_t *wrk = vcl_worker_get_current ();
1160 vcl_session_t *session = 0;
1164 session = vcl_session_get_w_handle (wrk, session_handle);
1166 return VPPCOM_EBADFD;
1167 session_index = session->session_index;
1169 if (PREDICT_FALSE (session->is_vep))
1171 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1172 "connect on an epoll session!", getpid (),
1174 return VPPCOM_EBADFD;
1177 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1179 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
1180 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1181 getpid (), session->vpp_handle, session_handle,
1182 session->transport.is_ip4 ? "IPv4" : "IPv6",
1183 format_ip46_address,
1184 &session->transport.rmt_ip, session->transport.is_ip4 ?
1185 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1186 clib_net_to_host_u16 (session->transport.rmt_port),
1187 session->session_type ? "UDP" : "TCP", session->session_state,
1188 vppcom_session_state_str (session->session_state));
1192 session->transport.is_ip4 = server_ep->is_ip4;
1193 if (session->transport.is_ip4)
1194 clib_memcpy (&session->transport.rmt_ip.ip4, server_ep->ip,
1195 sizeof (ip4_address_t));
1197 clib_memcpy (&session->transport.rmt_ip.ip6, server_ep->ip,
1198 sizeof (ip6_address_t));
1199 session->transport.rmt_port = server_ep->port;
1201 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
1203 getpid (), session->vpp_handle, session_handle,
1204 session->transport.is_ip4 ? "IPv4" : "IPv6",
1205 format_ip46_address,
1206 &session->transport.rmt_ip, session->transport.is_ip4 ?
1207 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1208 clib_net_to_host_u16 (session->transport.rmt_port),
1209 session->session_type ? "UDP" : "TCP");
1212 * Send connect request and wait for reply from vpp
1214 vppcom_send_connect_sock (session);
1215 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1216 vcm->cfg.session_timeout);
1218 session = vcl_session_get (wrk, session_index);
1220 if (PREDICT_FALSE (rv))
1222 if (VPPCOM_DEBUG > 0)
1225 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1226 "failed! returning %d (%s)", getpid (),
1227 session->vpp_handle, session_handle, rv,
1228 vppcom_retval_str (rv));
1230 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1231 "returning %d (%s)", getpid (),
1232 session_handle, rv, vppcom_retval_str (rv));
1236 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1237 getpid (), session->vpp_handle, session_handle);
1243 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1246 return (e->event_type == FIFO_EVENT_APP_RX
1247 && e->fifo->client_session_index == sid);
1249 return (e->event_type == SESSION_IO_EVT_CT_TX);
1253 vcl_session_is_readable (vcl_session_t * s)
1255 return ((s->session_state & STATE_OPEN)
1256 || (s->session_state == STATE_LISTEN
1257 && s->session_type == VPPCOM_PROTO_UDP));
1261 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1264 vcl_worker_t *wrk = vcl_worker_get_current ();
1265 int n_read = 0, rv, is_nonblocking;
1266 vcl_session_t *s = 0;
1267 svm_fifo_t *rx_fifo;
1268 svm_msg_q_msg_t msg;
1273 if (PREDICT_FALSE (!buf))
1274 return VPPCOM_EINVAL;
1276 s = vcl_session_get_w_handle (wrk, session_handle);
1277 if (PREDICT_FALSE (!s || s->is_vep))
1278 return VPPCOM_EBADFD;
1280 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1282 session_state_t state = s->session_state;
1283 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1285 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! "
1286 "state 0x%x (%s), returning %d (%s)",
1287 getpid (), s->vpp_handle, session_handle, state,
1288 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1292 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1293 is_ct = vcl_session_is_ct (s);
1294 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1295 rx_fifo = s->rx_fifo;
1297 if (svm_fifo_is_empty (rx_fifo))
1301 svm_fifo_unset_event (rx_fifo);
1304 while (svm_fifo_is_empty (rx_fifo))
1306 svm_fifo_unset_event (rx_fifo);
1307 svm_msg_q_lock (mq);
1308 if (svm_msg_q_is_empty (mq))
1309 svm_msg_q_wait (mq);
1311 svm_msg_q_sub_w_lock (mq, &msg);
1312 e = svm_msg_q_msg_data (mq, &msg);
1313 svm_msg_q_unlock (mq);
1314 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1316 vcl_handle_mq_event (wrk, e);
1317 svm_msg_q_free_msg (mq, &msg);
1320 svm_msg_q_free_msg (mq, &msg);
1322 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1328 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1330 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1332 if (svm_fifo_is_empty (rx_fifo))
1333 svm_fifo_unset_event (rx_fifo);
1335 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1337 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1338 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1342 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1343 getpid (), s->vpp_handle, session_handle, n_read, rx_fifo);
1349 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1351 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1355 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1357 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1361 vppcom_session_read_segments (uint32_t session_handle,
1362 vppcom_data_segments_t ds)
1364 vcl_worker_t *wrk = vcl_worker_get_current ();
1365 int n_read = 0, rv, is_nonblocking;
1366 vcl_session_t *s = 0;
1367 svm_fifo_t *rx_fifo;
1368 svm_msg_q_msg_t msg;
1373 s = vcl_session_get_w_handle (wrk, session_handle);
1374 if (PREDICT_FALSE (!s || s->is_vep))
1375 return VPPCOM_EBADFD;
1377 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1379 session_state_t state = s->session_state;
1380 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1384 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1385 is_ct = vcl_session_is_ct (s);
1386 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1387 rx_fifo = s->rx_fifo;
1389 if (svm_fifo_is_empty (rx_fifo))
1393 svm_fifo_unset_event (rx_fifo);
1396 while (svm_fifo_is_empty (rx_fifo))
1398 svm_fifo_unset_event (rx_fifo);
1399 svm_msg_q_lock (mq);
1400 if (svm_msg_q_is_empty (mq))
1401 svm_msg_q_wait (mq);
1403 svm_msg_q_sub_w_lock (mq, &msg);
1404 e = svm_msg_q_msg_data (mq, &msg);
1405 svm_msg_q_unlock (mq);
1406 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1408 vcl_handle_mq_event (wrk, e);
1409 svm_msg_q_free_msg (mq, &msg);
1412 svm_msg_q_free_msg (mq, &msg);
1414 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1419 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1420 svm_fifo_unset_event (rx_fifo);
1422 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1424 /* If the peer is not polling send notification */
1425 if (!svm_fifo_has_event (s->rx_fifo))
1426 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1427 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1434 vppcom_session_free_segments (uint32_t session_handle,
1435 vppcom_data_segments_t ds)
1437 vcl_worker_t *wrk = vcl_worker_get_current ();
1440 s = vcl_session_get_w_handle (wrk, session_handle);
1441 if (PREDICT_FALSE (!s || s->is_vep))
1444 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1448 vppcom_session_read_ready (vcl_session_t * session)
1450 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1451 if (PREDICT_FALSE (session->is_vep))
1453 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1454 "epoll session!", getpid (), session->session_index);
1455 return VPPCOM_EBADFD;
1458 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1460 session_state_t state = session->session_state;
1463 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1465 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1466 " state 0x%x (%s), returning %d (%s)", getpid (),
1467 session->vpp_handle, session->session_index, state,
1468 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1472 if (session->session_state & STATE_LISTEN)
1473 return clib_fifo_elts (session->accept_evts_fifo);
1475 return svm_fifo_max_dequeue (session->rx_fifo);
1479 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1481 u32 first_copy = clib_min (ds[0].len, max_bytes);
1482 clib_memcpy (buf, ds[0].data, first_copy);
1483 if (first_copy < max_bytes)
1485 clib_memcpy (buf + first_copy, ds[1].data,
1486 clib_min (ds[1].len, max_bytes - first_copy));
1492 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1495 return (e->event_type == FIFO_EVENT_APP_TX
1496 && e->fifo->client_session_index == sid);
1498 return (e->event_type == SESSION_IO_EVT_CT_RX);
1502 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1504 vcl_worker_t *wrk = vcl_worker_get_current ();
1505 int rv, n_write, is_nonblocking;
1506 vcl_session_t *s = 0;
1507 svm_fifo_t *tx_fifo = 0;
1508 session_evt_type_t et;
1509 svm_msg_q_msg_t msg;
1514 if (PREDICT_FALSE (!buf))
1515 return VPPCOM_EINVAL;
1517 s = vcl_session_get_w_handle (wrk, session_handle);
1518 if (PREDICT_FALSE (!s))
1519 return VPPCOM_EBADFD;
1521 if (PREDICT_FALSE (s->is_vep))
1523 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1524 "cannot write to an epoll session!",
1525 getpid (), s->vpp_handle, session_handle);
1527 return VPPCOM_EBADFD;
1530 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1532 session_state_t state = s->session_state;
1533 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1534 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1535 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1536 state, vppcom_session_state_str (state));
1540 tx_fifo = s->tx_fifo;
1541 is_ct = vcl_session_is_ct (s);
1542 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1543 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1544 if (svm_fifo_is_full (tx_fifo))
1548 return VPPCOM_EWOULDBLOCK;
1550 while (svm_fifo_is_full (tx_fifo))
1552 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1553 svm_msg_q_lock (mq);
1554 svm_msg_q_wait (mq);
1556 svm_msg_q_sub_w_lock (mq, &msg);
1557 e = svm_msg_q_msg_data (mq, &msg);
1558 svm_msg_q_unlock (mq);
1560 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1561 vcl_handle_mq_event (wrk, e);
1562 svm_msg_q_free_msg (mq, &msg);
1566 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1567 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1569 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1570 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1572 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1575 ASSERT (n_write > 0);
1577 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1578 s->vpp_handle, session_handle, n_write);
1583 static vcl_session_t *
1584 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1587 s = vcl_session_get (wrk, f->client_session_index);
1591 if (type == 0 && s->rx_fifo == f)
1594 if (type == 1 && s->tx_fifo == f)
1597 s = vcl_session_get (wrk, f->master_session_index);
1600 if (type == 0 && s->rx_fifo == f)
1602 if (type == 1 && s->tx_fifo == f)
1609 vppcom_session_write_ready (vcl_session_t * session)
1611 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1612 if (PREDICT_FALSE (session->is_vep))
1614 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1615 "cannot write to an epoll session!",
1616 getpid (), session->vpp_handle, session->session_index);
1617 return VPPCOM_EBADFD;
1620 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1622 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1623 "cannot write to a listen session!",
1624 getpid (), session->vpp_handle, session->session_index);
1625 return VPPCOM_EBADFD;
1628 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1630 session_state_t state = session->session_state;
1633 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1634 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1635 "session is not open! state 0x%x (%s), "
1636 "returning %d (%s)", getpid (), session->vpp_handle,
1637 session->session_index,
1638 state, vppcom_session_state_str (state),
1639 rv, vppcom_retval_str (rv));
1643 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1644 getpid (), session->vpp_handle, session->session_index,
1645 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1647 return svm_fifo_max_enqueue (session->tx_fifo);
1651 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1653 svm_msg_q_msg_t *msg;
1657 n_msgs = svm_msg_q_size (mq);
1658 for (i = 0; i < n_msgs; i++)
1660 vec_add2 (wrk->mq_msg_vector, msg, 1);
1661 svm_msg_q_sub_w_lock (mq, msg);
1666 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1667 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1669 svm_fifo_unset_event (_fifo); \
1670 if (svm_fifo_is_empty (_fifo)) \
1675 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1676 unsigned long n_bits, unsigned long *read_map,
1677 unsigned long *write_map,
1678 unsigned long *except_map, u32 * bits_set)
1680 session_disconnected_msg_t *disconnected_msg;
1681 session_connected_msg_t *connected_msg;
1682 session_accepted_msg_t *accepted_msg;
1683 vcl_session_msg_t *vcl_msg;
1684 vcl_session_t *session;
1688 switch (e->event_type)
1690 case FIFO_EVENT_APP_RX:
1691 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1692 sid = e->fifo->client_session_index;
1693 session = vcl_session_get (wrk, sid);
1696 if (sid < n_bits && read_map)
1698 clib_bitmap_set_no_check (read_map, sid, 1);
1702 case FIFO_EVENT_APP_TX:
1703 sid = e->fifo->client_session_index;
1704 session = vcl_session_get (wrk, sid);
1707 if (sid < n_bits && write_map)
1709 clib_bitmap_set_no_check (write_map, sid, 1);
1713 case SESSION_IO_EVT_CT_TX:
1714 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1715 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
1718 sid = session->session_index;
1719 if (sid < n_bits && read_map)
1721 clib_bitmap_set_no_check (read_map, sid, 1);
1725 case SESSION_IO_EVT_CT_RX:
1726 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
1729 sid = session->session_index;
1730 if (sid < n_bits && write_map)
1732 clib_bitmap_set_no_check (write_map, sid, 1);
1736 case SESSION_CTRL_EVT_ACCEPTED:
1737 accepted_msg = (session_accepted_msg_t *) e->data;
1738 handle = accepted_msg->listener_handle;
1739 session = vcl_session_table_lookup_listener (wrk, handle);
1742 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
1743 "listener handle %llx", getpid (), handle);
1747 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
1748 vcl_msg->accepted_msg = *accepted_msg;
1749 sid = session->session_index;
1750 if (sid < n_bits && read_map)
1752 clib_bitmap_set_no_check (read_map, sid, 1);
1756 case SESSION_CTRL_EVT_CONNECTED:
1757 connected_msg = (session_connected_msg_t *) e->data;
1758 vcl_session_connected_handler (wrk, connected_msg);
1760 case SESSION_CTRL_EVT_DISCONNECTED:
1761 disconnected_msg = (session_disconnected_msg_t *) e->data;
1762 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
1763 if (sid < n_bits && except_map)
1765 clib_bitmap_set_no_check (except_map, sid, 1);
1769 case SESSION_CTRL_EVT_RESET:
1770 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
1771 if (sid < n_bits && except_map)
1773 clib_bitmap_set_no_check (except_map, sid, 1);
1778 clib_warning ("unhandled: %u", e->event_type);
1784 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
1785 unsigned long n_bits, unsigned long *read_map,
1786 unsigned long *write_map, unsigned long *except_map,
1787 double time_to_wait, u32 * bits_set)
1789 svm_msg_q_msg_t *msg;
1793 svm_msg_q_lock (mq);
1794 if (svm_msg_q_is_empty (mq))
1798 svm_msg_q_unlock (mq);
1804 svm_msg_q_unlock (mq);
1807 else if (time_to_wait < 0)
1809 svm_msg_q_wait (mq);
1813 if (svm_msg_q_timedwait (mq, time_to_wait))
1815 svm_msg_q_unlock (mq);
1820 vcl_mq_dequeue_batch (wrk, mq);
1821 svm_msg_q_unlock (mq);
1823 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
1825 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
1826 e = svm_msg_q_msg_data (mq, msg);
1827 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
1828 except_map, bits_set);
1829 svm_msg_q_free_msg (mq, msg);
1831 vec_reset_length (wrk->mq_msg_vector);
1836 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
1837 unsigned long *read_map, unsigned long *write_map,
1838 unsigned long *except_map, double time_to_wait,
1841 double total_wait = 0, wait_slice;
1842 vcl_cut_through_registration_t *cr;
1844 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
1845 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
1848 vcl_ct_registration_lock (wrk);
1850 pool_foreach (cr, wrk->cut_through_registrations, ({
1851 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
1855 vcl_ct_registration_unlock (wrk);
1857 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
1858 write_map, except_map, time_to_wait, bits_set);
1859 total_wait += wait_slice;
1863 while (total_wait < time_to_wait);
1869 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
1870 unsigned long *read_map, unsigned long *write_map,
1871 unsigned long *except_map, double time_to_wait,
1874 vcl_mq_evt_conn_t *mqc;
1875 int __clib_unused n_read;
1879 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
1880 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
1881 vec_len (wrk->mq_events), time_to_wait);
1882 for (i = 0; i < n_mq_evts; i++)
1884 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
1885 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
1886 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
1887 except_map, 0, bits_set);
1890 return (n_mq_evts > 0 ? (int) *bits_set : 0);
1894 vppcom_select (unsigned long n_bits, unsigned long *read_map,
1895 unsigned long *write_map, unsigned long *except_map,
1896 double time_to_wait)
1898 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
1899 vcl_worker_t *wrk = vcl_worker_get_current ();
1900 vcl_session_t *session = 0;
1903 ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
1905 if (n_bits && read_map)
1907 clib_bitmap_validate (wrk->rd_bitmap, minbits);
1908 clib_memcpy (wrk->rd_bitmap, read_map,
1909 vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
1910 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
1912 if (n_bits && write_map)
1914 clib_bitmap_validate (wrk->wr_bitmap, minbits);
1915 clib_memcpy (wrk->wr_bitmap, write_map,
1916 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
1917 memset (write_map, 0,
1918 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
1920 if (n_bits && except_map)
1922 clib_bitmap_validate (wrk->ex_bitmap, minbits);
1923 clib_memcpy (wrk->ex_bitmap, except_map,
1924 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
1925 memset (except_map, 0,
1926 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
1936 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
1937 if (!(session = vcl_session_get (wrk, sid)))
1939 VDBG (0, "VCL<%d>: session %d specified in write_map is closed.",
1941 return VPPCOM_EBADFD;
1944 rv = svm_fifo_is_full (session->tx_fifo);
1947 clib_bitmap_set_no_check (write_map, sid, 1);
1956 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
1957 if (!(session = vcl_session_get (wrk, sid)))
1959 VDBG (0, "VCL<%d>: session %d specified in write_map is closed.",
1961 return VPPCOM_EBADFD;
1964 rv = vppcom_session_read_ready (session);
1967 clib_bitmap_set_no_check (read_map, sid, 1);
1975 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
1977 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
1978 read_map, write_map, except_map, &bits_set);
1980 vec_reset_length (wrk->unhandled_evts_vector);
1982 if (vcm->cfg.use_mq_eventfd)
1983 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
1984 time_to_wait, &bits_set);
1986 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
1987 time_to_wait, &bits_set);
1993 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
1995 vcl_session_t *session;
1996 vppcom_epoll_t *vep;
1999 if (VPPCOM_DEBUG <= 1)
2002 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2003 session = vcl_session_get (wrk, vep_idx);
2004 if (PREDICT_FALSE (!session))
2006 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2007 getpid (), vep_idx);
2010 if (PREDICT_FALSE (!session->is_vep))
2012 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2013 getpid (), vep_idx);
2016 vep = &session->vep;
2017 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2020 " is_vep_session = %u\n"
2021 " next_sid = 0x%x (%u)\n"
2022 " wait_cont_idx = 0x%x (%u)\n"
2023 "}\n", getpid (), vep_idx,
2024 session->is_vep, session->is_vep_session,
2025 vep->next_sh, vep->next_sh,
2026 session->wait_cont_idx, session->wait_cont_idx);
2028 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2030 session = vcl_session_get (wrk, sid);
2031 if (PREDICT_FALSE (!session))
2033 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2036 if (PREDICT_FALSE (session->is_vep))
2037 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2038 getpid (), vep_idx);
2039 else if (PREDICT_FALSE (!session->is_vep_session))
2041 clib_warning ("VCL<%d>: ERROR: session (%u) "
2042 "is not a vep session!", getpid (), sid);
2045 vep = &session->vep;
2046 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2047 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2048 "vep_idx (%u)!", getpid (),
2049 sid, session->vep.vep_sh, vep_idx);
2050 if (session->is_vep_session)
2052 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2054 " next_sid = 0x%x (%u)\n"
2055 " prev_sid = 0x%x (%u)\n"
2056 " vep_idx = 0x%x (%u)\n"
2057 " ev.events = 0x%x\n"
2058 " ev.data.u64 = 0x%llx\n"
2062 vep->next_sh, vep->next_sh,
2063 vep->prev_sh, vep->prev_sh,
2064 vep->vep_sh, vep->vep_sh,
2065 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2070 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2071 getpid (), vep_idx);
2075 vppcom_epoll_create (void)
2077 vcl_worker_t *wrk = vcl_worker_get_current ();
2078 vcl_session_t *vep_session;
2080 vep_session = vcl_session_alloc (wrk);
2082 vep_session->is_vep = 1;
2083 vep_session->vep.vep_sh = ~0;
2084 vep_session->vep.next_sh = ~0;
2085 vep_session->vep.prev_sh = ~0;
2086 vep_session->wait_cont_idx = ~0;
2087 vep_session->vpp_handle = ~0;
2089 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_sh);
2090 VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!",
2091 getpid (), vep_session->session_index, vep_session->session_index);
2093 return vcl_session_handle (vep_session);
2097 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2098 struct epoll_event *event)
2100 vcl_worker_t *wrk = vcl_worker_get_current ();
2101 vcl_session_t *vep_session;
2102 vcl_session_t *session;
2105 if (vep_handle == session_handle)
2107 clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!",
2108 getpid (), vep_handle);
2109 return VPPCOM_EINVAL;
2112 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2113 if (PREDICT_FALSE (!vep_session))
2115 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_handle);
2116 return VPPCOM_EBADFD;
2118 if (PREDICT_FALSE (!vep_session->is_vep))
2120 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2121 getpid (), vep_handle);
2122 return VPPCOM_EINVAL;
2125 ASSERT (vep_session->vep.vep_sh == ~0);
2126 ASSERT (vep_session->vep.prev_sh == ~0);
2128 session = vcl_session_get_w_handle (wrk, session_handle);
2129 if (PREDICT_FALSE (!session))
2131 VDBG (0, "VCL<%d>: ERROR: Invalid session_handle (%u)!",
2132 getpid (), session_handle);
2133 return VPPCOM_EBADFD;
2135 if (PREDICT_FALSE (session->is_vep))
2137 clib_warning ("ERROR: session_handle (%u) is a vep!", vep_handle);
2138 return VPPCOM_EINVAL;
2144 if (PREDICT_FALSE (!event))
2146 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to "
2147 "epoll_event structure!", getpid ());
2148 return VPPCOM_EINVAL;
2150 if (vep_session->vep.next_sh != ~0)
2152 vcl_session_t *next_session;
2153 next_session = vcl_session_get_w_handle (wrk,
2154 vep_session->vep.next_sh);
2155 if (PREDICT_FALSE (!next_session))
2157 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid "
2158 "vep.next_sid (%u) on vep_idx (%u)!",
2159 getpid (), vep_session->vep.next_sh, vep_handle);
2160 return VPPCOM_EBADFD;
2162 ASSERT (next_session->vep.prev_sh == vep_handle);
2163 next_session->vep.prev_sh = session_handle;
2165 session->vep.next_sh = vep_session->vep.next_sh;
2166 session->vep.prev_sh = vep_handle;
2167 session->vep.vep_sh = vep_handle;
2168 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2169 session->vep.ev = *event;
2170 session->is_vep = 0;
2171 session->is_vep_session = 1;
2172 vep_session->vep.next_sh = session_handle;
2174 VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x, "
2175 "data 0x%llx!", getpid (), vep_handle, session_handle,
2176 event->events, event->data.u64);
2177 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2181 if (PREDICT_FALSE (!event))
2183 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to "
2184 "epoll_event structure!", getpid ());
2188 else if (PREDICT_FALSE (!session->is_vep_session))
2190 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2191 "not a vep session!", getpid (), session_handle);
2195 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2197 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2198 "vep_idx (%u) != vep_idx (%u)!",
2199 getpid (), session_handle,
2200 session->vep.vep_sh, vep_handle);
2204 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2205 session->vep.ev = *event;
2206 VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
2207 " data 0x%llx!", getpid (), vep_handle, session_handle,
2208 event->events, event->data.u64);
2212 if (PREDICT_FALSE (!session->is_vep_session))
2214 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2215 "not a vep session!", getpid (), session_handle);
2219 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2221 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2222 "vep_idx (%u) != vep_idx (%u)!",
2223 getpid (), session_handle,
2224 session->vep.vep_sh, vep_handle);
2229 vep_session->wait_cont_idx =
2230 (vep_session->wait_cont_idx == session_handle) ?
2231 session->vep.next_sh : vep_session->wait_cont_idx;
2233 if (session->vep.prev_sh == vep_handle)
2234 vep_session->vep.next_sh = session->vep.next_sh;
2237 vcl_session_t *prev_session;
2238 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2239 if (PREDICT_FALSE (!prev_session))
2241 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2242 "vep.prev_sid (%u) on sid (%u)!",
2243 getpid (), session->vep.prev_sh, session_handle);
2244 return VPPCOM_EBADFD;
2246 ASSERT (prev_session->vep.next_sh == session_handle);
2247 prev_session->vep.next_sh = session->vep.next_sh;
2249 if (session->vep.next_sh != ~0)
2251 vcl_session_t *next_session;
2252 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2253 if (PREDICT_FALSE (!next_session))
2255 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2256 "vep.next_sid (%u) on sid (%u)!",
2257 getpid (), session->vep.next_sh, session_handle);
2258 return VPPCOM_EBADFD;
2260 ASSERT (next_session->vep.prev_sh == session_handle);
2261 next_session->vep.prev_sh = session->vep.prev_sh;
2264 memset (&session->vep, 0, sizeof (session->vep));
2265 session->vep.next_sh = ~0;
2266 session->vep.prev_sh = ~0;
2267 session->vep.vep_sh = ~0;
2268 session->is_vep_session = 0;
2269 VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!",
2270 getpid (), vep_handle, session_handle);
2271 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2275 clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op);
2279 vep_verify_epoll_chain (wrk, vep_handle);
2286 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2287 struct epoll_event *events, u32 * num_ev)
2289 session_disconnected_msg_t *disconnected_msg;
2290 session_connected_msg_t *connected_msg;
2291 session_accepted_msg_t *accepted_msg;
2292 u64 session_evt_data = ~0, handle;
2293 u32 sid = ~0, session_events;
2294 vcl_session_msg_t *vcl_msg;
2295 vcl_session_t *session;
2298 switch (e->event_type)
2300 case FIFO_EVENT_APP_RX:
2301 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2302 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2303 sid = e->fifo->client_session_index;
2304 session = vcl_session_get (wrk, sid);
2305 session_events = session->vep.ev.events;
2306 if (!(EPOLLIN & session->vep.ev.events))
2309 events[*num_ev].events |= EPOLLIN;
2310 session_evt_data = session->vep.ev.data.u64;
2312 case FIFO_EVENT_APP_TX:
2313 sid = e->fifo->client_session_index;
2314 session = vcl_session_get (wrk, sid);
2315 session_events = session->vep.ev.events;
2316 if (!(EPOLLOUT & session_events))
2319 events[*num_ev].events |= EPOLLOUT;
2320 session_evt_data = session->vep.ev.data.u64;
2322 case SESSION_IO_EVT_CT_TX:
2323 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2324 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2325 sid = session->session_index;
2326 session_events = session->vep.ev.events;
2327 if (!(EPOLLIN & session->vep.ev.events))
2330 events[*num_ev].events |= EPOLLIN;
2331 session_evt_data = session->vep.ev.data.u64;
2333 case SESSION_IO_EVT_CT_RX:
2334 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2335 sid = session->session_index;
2336 session_events = session->vep.ev.events;
2337 if (!(EPOLLOUT & session_events))
2340 events[*num_ev].events |= EPOLLOUT;
2341 session_evt_data = session->vep.ev.data.u64;
2343 case SESSION_CTRL_EVT_ACCEPTED:
2344 accepted_msg = (session_accepted_msg_t *) e->data;
2345 handle = accepted_msg->listener_handle;
2346 session = vcl_session_table_lookup_listener (wrk, handle);
2349 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
2350 "listener handle %llx", getpid (), handle);
2354 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
2355 vcl_msg->accepted_msg = *accepted_msg;
2356 session_events = session->vep.ev.events;
2357 if (!(EPOLLIN & session_events))
2361 events[*num_ev].events |= EPOLLIN;
2362 session_evt_data = session->vep.ev.data.u64;
2364 case SESSION_CTRL_EVT_CONNECTED:
2365 connected_msg = (session_connected_msg_t *) e->data;
2366 vcl_session_connected_handler (wrk, connected_msg);
2367 /* Generate EPOLLOUT because there's no connected event */
2368 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2369 session = vcl_session_get (wrk, sid);
2370 session_events = session->vep.ev.events;
2371 if (EPOLLOUT & session_events)
2374 events[*num_ev].events |= EPOLLOUT;
2375 session_evt_data = session->vep.ev.data.u64;
2378 case SESSION_CTRL_EVT_DISCONNECTED:
2379 disconnected_msg = (session_disconnected_msg_t *) e->data;
2380 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
2381 if (!(session = vcl_session_get (wrk, sid)))
2384 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2385 session_evt_data = session->vep.ev.data.u64;
2386 session_events = session->vep.ev.events;
2388 case SESSION_CTRL_EVT_RESET:
2389 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2390 if (!(session = vcl_session_get (wrk, sid)))
2393 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2394 session_evt_data = session->vep.ev.data.u64;
2395 session_events = session->vep.ev.events;
2398 VDBG (0, "unhandled: %u", e->event_type);
2404 events[*num_ev].data.u64 = session_evt_data;
2405 if (EPOLLONESHOT & session_events)
2407 session = vcl_session_get (wrk, sid);
2408 session->vep.ev.events = 0;
2415 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2416 struct epoll_event *events, u32 maxevents,
2417 double wait_for_time, u32 * num_ev)
2419 svm_msg_q_msg_t *msg;
2423 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2424 goto handle_dequeued;
2426 svm_msg_q_lock (mq);
2427 if (svm_msg_q_is_empty (mq))
2431 svm_msg_q_unlock (mq);
2434 else if (wait_for_time < 0)
2436 svm_msg_q_wait (mq);
2440 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2442 svm_msg_q_unlock (mq);
2447 vcl_mq_dequeue_batch (wrk, mq);
2448 svm_msg_q_unlock (mq);
2451 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2453 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2454 e = svm_msg_q_msg_data (mq, msg);
2455 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2456 svm_msg_q_free_msg (mq, msg);
2457 if (*num_ev == maxevents)
2463 vec_delete (wrk->mq_msg_vector, i, 0);
2469 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2470 int maxevents, u32 n_evts, double wait_for_time)
2472 vcl_cut_through_registration_t *cr;
2473 double total_wait = 0, wait_slice;
2476 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2477 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2481 vcl_ct_registration_lock (wrk);
2483 pool_foreach (cr, wrk->cut_through_registrations, ({
2484 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2487 vcl_ct_registration_unlock (wrk);
2489 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2490 maxevents, n_evts ? 0 : wait_slice,
2493 total_wait += wait_slice;
2497 while (total_wait < wait_for_time);
2502 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2503 int maxevents, u32 n_evts, double wait_for_time)
2505 vcl_mq_evt_conn_t *mqc;
2506 int __clib_unused n_read;
2510 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2511 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2512 vec_len (wrk->mq_events), wait_for_time);
2513 for (i = 0; i < n_mq_evts; i++)
2515 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2516 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2517 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2520 return (int) n_evts;
2524 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2525 int maxevents, double wait_for_time)
2527 vcl_worker_t *wrk = vcl_worker_get_current ();
2528 vcl_session_t *vep_session;
2532 if (PREDICT_FALSE (maxevents <= 0))
2534 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2535 getpid (), maxevents);
2536 return VPPCOM_EINVAL;
2539 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2541 return VPPCOM_EBADFD;
2543 if (PREDICT_FALSE (!vep_session->is_vep))
2545 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2546 getpid (), vep_handle);
2547 return VPPCOM_EINVAL;
2550 memset (events, 0, sizeof (*events) * maxevents);
2552 if (vec_len (wrk->unhandled_evts_vector))
2554 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2556 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2558 if (n_evts == maxevents)
2565 vec_delete (wrk->unhandled_evts_vector, i, 0);
2568 if (vcm->cfg.use_mq_eventfd)
2569 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2572 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2577 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2578 void *buffer, uint32_t * buflen)
2580 vcl_worker_t *wrk = vcl_worker_get_current ();
2581 vcl_session_t *session;
2583 u32 *flags = buffer;
2584 vppcom_endpt_t *ep = buffer;
2586 session = vcl_session_get_w_handle (wrk, session_handle);
2588 return VPPCOM_EBADFD;
2592 case VPPCOM_ATTR_GET_NREAD:
2593 rv = vppcom_session_read_ready (session);
2594 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2598 case VPPCOM_ATTR_GET_NWRITE:
2599 rv = vppcom_session_write_ready (session);
2600 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2601 getpid (), session_handle, rv);
2604 case VPPCOM_ATTR_GET_FLAGS:
2605 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2607 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2608 VCL_SESS_ATTR_NONBLOCK));
2609 *buflen = sizeof (*flags);
2610 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2611 "is_nonblocking = %u", getpid (),
2612 session_handle, *flags,
2613 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2619 case VPPCOM_ATTR_SET_FLAGS:
2620 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2622 if (*flags & O_NONBLOCK)
2623 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2625 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2627 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2628 " is_nonblocking = %u",
2629 getpid (), session_handle, *flags,
2630 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2636 case VPPCOM_ATTR_GET_PEER_ADDR:
2637 if (PREDICT_TRUE (buffer && buflen &&
2638 (*buflen >= sizeof (*ep)) && ep->ip))
2640 ep->is_ip4 = session->transport.is_ip4;
2641 ep->port = session->transport.rmt_port;
2642 if (session->transport.is_ip4)
2643 clib_memcpy (ep->ip, &session->transport.rmt_ip.ip4,
2644 sizeof (ip4_address_t));
2646 clib_memcpy (ep->ip, &session->transport.rmt_ip.ip6,
2647 sizeof (ip6_address_t));
2648 *buflen = sizeof (*ep);
2649 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2650 "addr = %U, port %u", getpid (),
2651 session_handle, ep->is_ip4, format_ip46_address,
2652 &session->transport.rmt_ip,
2653 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2654 clib_net_to_host_u16 (ep->port));
2660 case VPPCOM_ATTR_GET_LCL_ADDR:
2661 if (PREDICT_TRUE (buffer && buflen &&
2662 (*buflen >= sizeof (*ep)) && ep->ip))
2664 ep->is_ip4 = session->transport.is_ip4;
2665 ep->port = session->transport.lcl_port;
2666 if (session->transport.is_ip4)
2667 clib_memcpy (ep->ip, &session->transport.lcl_ip.ip4,
2668 sizeof (ip4_address_t));
2670 clib_memcpy (ep->ip, &session->transport.lcl_ip.ip6,
2671 sizeof (ip6_address_t));
2672 *buflen = sizeof (*ep);
2673 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2674 " addr = %U port %d", getpid (),
2675 session_handle, ep->is_ip4, format_ip46_address,
2676 &session->transport.lcl_ip,
2677 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2678 clib_net_to_host_u16 (ep->port));
2684 case VPPCOM_ATTR_GET_LIBC_EPFD:
2685 rv = session->libc_epfd;
2686 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2690 case VPPCOM_ATTR_SET_LIBC_EPFD:
2691 if (PREDICT_TRUE (buffer && buflen &&
2692 (*buflen == sizeof (session->libc_epfd))))
2694 session->libc_epfd = *(int *) buffer;
2695 *buflen = sizeof (session->libc_epfd);
2697 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2698 "buflen %d", getpid (), session->libc_epfd, *buflen);
2704 case VPPCOM_ATTR_GET_PROTOCOL:
2705 if (buffer && buflen && (*buflen >= sizeof (int)))
2707 *(int *) buffer = session->session_type;
2708 *buflen = sizeof (int);
2710 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2711 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
2718 case VPPCOM_ATTR_GET_LISTEN:
2719 if (buffer && buflen && (*buflen >= sizeof (int)))
2721 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2722 VCL_SESS_ATTR_LISTEN);
2723 *buflen = sizeof (int);
2725 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
2726 getpid (), *(int *) buffer, *buflen);
2732 case VPPCOM_ATTR_GET_ERROR:
2733 if (buffer && buflen && (*buflen >= sizeof (int)))
2735 *(int *) buffer = 0;
2736 *buflen = sizeof (int);
2738 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
2739 getpid (), *(int *) buffer, *buflen);
2745 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
2746 if (buffer && buflen && (*buflen >= sizeof (u32)))
2750 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
2751 session->tx_fifo ? session->tx_fifo->nitems :
2752 vcm->cfg.tx_fifo_size);
2753 *buflen = sizeof (u32);
2755 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
2756 "buflen %d, #VPP-TBD#", getpid (),
2757 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2763 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
2764 if (buffer && buflen && (*buflen == sizeof (u32)))
2767 session->sndbuf_size = *(u32 *) buffer;
2768 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
2769 "buflen %d, #VPP-TBD#", getpid (),
2770 session->sndbuf_size, session->sndbuf_size, *buflen);
2776 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
2777 if (buffer && buflen && (*buflen >= sizeof (u32)))
2781 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
2782 session->rx_fifo ? session->rx_fifo->nitems :
2783 vcm->cfg.rx_fifo_size);
2784 *buflen = sizeof (u32);
2786 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
2787 "buflen %d, #VPP-TBD#", getpid (),
2788 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2794 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
2795 if (buffer && buflen && (*buflen == sizeof (u32)))
2798 session->rcvbuf_size = *(u32 *) buffer;
2799 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
2800 "buflen %d, #VPP-TBD#", getpid (),
2801 session->sndbuf_size, session->sndbuf_size, *buflen);
2807 case VPPCOM_ATTR_GET_REUSEADDR:
2808 if (buffer && buflen && (*buflen >= sizeof (int)))
2811 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2812 VCL_SESS_ATTR_REUSEADDR);
2813 *buflen = sizeof (int);
2815 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
2816 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2822 case VPPCOM_ATTR_SET_REUSEADDR:
2823 if (buffer && buflen && (*buflen == sizeof (int)) &&
2824 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
2827 if (*(int *) buffer)
2828 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
2830 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
2832 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
2833 " #VPP-TBD#", getpid (),
2834 VCL_SESS_ATTR_TEST (session->attr,
2835 VCL_SESS_ATTR_REUSEADDR), *buflen);
2841 case VPPCOM_ATTR_GET_REUSEPORT:
2842 if (buffer && buflen && (*buflen >= sizeof (int)))
2845 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2846 VCL_SESS_ATTR_REUSEPORT);
2847 *buflen = sizeof (int);
2849 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
2850 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2856 case VPPCOM_ATTR_SET_REUSEPORT:
2857 if (buffer && buflen && (*buflen == sizeof (int)) &&
2858 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
2861 if (*(int *) buffer)
2862 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
2864 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
2866 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
2867 " #VPP-TBD#", getpid (),
2868 VCL_SESS_ATTR_TEST (session->attr,
2869 VCL_SESS_ATTR_REUSEPORT), *buflen);
2875 case VPPCOM_ATTR_GET_BROADCAST:
2876 if (buffer && buflen && (*buflen >= sizeof (int)))
2879 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2880 VCL_SESS_ATTR_BROADCAST);
2881 *buflen = sizeof (int);
2883 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
2884 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2890 case VPPCOM_ATTR_SET_BROADCAST:
2891 if (buffer && buflen && (*buflen == sizeof (int)))
2894 if (*(int *) buffer)
2895 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
2897 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
2899 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
2900 "#VPP-TBD#", getpid (),
2901 VCL_SESS_ATTR_TEST (session->attr,
2902 VCL_SESS_ATTR_BROADCAST), *buflen);
2908 case VPPCOM_ATTR_GET_V6ONLY:
2909 if (buffer && buflen && (*buflen >= sizeof (int)))
2912 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2913 VCL_SESS_ATTR_V6ONLY);
2914 *buflen = sizeof (int);
2916 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
2917 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2923 case VPPCOM_ATTR_SET_V6ONLY:
2924 if (buffer && buflen && (*buflen == sizeof (int)))
2927 if (*(int *) buffer)
2928 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
2930 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
2932 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
2933 "#VPP-TBD#", getpid (),
2934 VCL_SESS_ATTR_TEST (session->attr,
2935 VCL_SESS_ATTR_V6ONLY), *buflen);
2941 case VPPCOM_ATTR_GET_KEEPALIVE:
2942 if (buffer && buflen && (*buflen >= sizeof (int)))
2945 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2946 VCL_SESS_ATTR_KEEPALIVE);
2947 *buflen = sizeof (int);
2949 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
2950 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2956 case VPPCOM_ATTR_SET_KEEPALIVE:
2957 if (buffer && buflen && (*buflen == sizeof (int)))
2960 if (*(int *) buffer)
2961 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
2963 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
2965 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
2966 "#VPP-TBD#", getpid (),
2967 VCL_SESS_ATTR_TEST (session->attr,
2968 VCL_SESS_ATTR_KEEPALIVE), *buflen);
2974 case VPPCOM_ATTR_GET_TCP_NODELAY:
2975 if (buffer && buflen && (*buflen >= sizeof (int)))
2978 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2979 VCL_SESS_ATTR_TCP_NODELAY);
2980 *buflen = sizeof (int);
2982 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
2983 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2989 case VPPCOM_ATTR_SET_TCP_NODELAY:
2990 if (buffer && buflen && (*buflen == sizeof (int)))
2993 if (*(int *) buffer)
2994 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
2996 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
2998 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
2999 "#VPP-TBD#", getpid (),
3000 VCL_SESS_ATTR_TEST (session->attr,
3001 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3007 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3008 if (buffer && buflen && (*buflen >= sizeof (int)))
3011 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3012 VCL_SESS_ATTR_TCP_KEEPIDLE);
3013 *buflen = sizeof (int);
3015 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3016 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3022 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3023 if (buffer && buflen && (*buflen == sizeof (int)))
3026 if (*(int *) buffer)
3027 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3029 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3031 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3032 "#VPP-TBD#", getpid (),
3033 VCL_SESS_ATTR_TEST (session->attr,
3034 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3040 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3041 if (buffer && buflen && (*buflen >= sizeof (int)))
3044 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3045 VCL_SESS_ATTR_TCP_KEEPINTVL);
3046 *buflen = sizeof (int);
3048 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3049 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3055 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3056 if (buffer && buflen && (*buflen == sizeof (int)))
3059 if (*(int *) buffer)
3060 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3062 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3064 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3065 "#VPP-TBD#", getpid (),
3066 VCL_SESS_ATTR_TEST (session->attr,
3067 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3073 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3074 if (buffer && buflen && (*buflen >= sizeof (u32)))
3077 *(u32 *) buffer = session->user_mss;
3078 *buflen = sizeof (int);
3080 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3081 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3087 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3088 if (buffer && buflen && (*buflen == sizeof (u32)))
3091 session->user_mss = *(u32 *) buffer;
3093 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3094 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3109 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3110 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3112 vcl_worker_t *wrk = vcl_worker_get_current ();
3114 vcl_session_t *session = 0;
3118 session = vcl_session_get_w_handle (wrk, session_handle);
3119 if (PREDICT_FALSE (!session))
3121 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3122 getpid (), session_handle);
3123 return VPPCOM_EBADFD;
3125 ep->is_ip4 = session->transport.is_ip4;
3126 ep->port = session->transport.rmt_port;
3130 rv = vppcom_session_read (session_handle, buffer, buflen);
3131 else if (flags & MSG_PEEK)
3132 rv = vppcom_session_peek (session_handle, buffer, buflen);
3135 clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d",
3137 return VPPCOM_EAFNOSUPPORT;
3142 if (session->transport.is_ip4)
3143 clib_memcpy (ep->ip, &session->transport.rmt_ip.ip4,
3144 sizeof (ip4_address_t));
3146 clib_memcpy (ep->ip, &session->transport.rmt_ip.ip6,
3147 sizeof (ip6_address_t));
3154 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3155 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3158 return VPPCOM_EINVAL;
3163 return VPPCOM_EINVAL;
3168 // TBD check the flags and do the right thing
3169 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3170 getpid (), flags, flags);
3173 return (vppcom_session_write (session_handle, buffer, buflen));
3177 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3179 vcl_worker_t *wrk = vcl_worker_get_current ();
3180 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3181 u32 i, keep_trying = 1;
3184 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3185 getpid (), vp, n_sids, wait_for_time);
3188 return VPPCOM_EFAULT;
3192 vcl_session_t *session;
3194 for (i = 0; i < n_sids; i++)
3196 ASSERT (vp[i].revents);
3198 session = vcl_session_get (wrk, vp[i].sid);
3205 if (POLLIN & vp[i].events)
3207 rv = vppcom_session_read_ready (session);
3210 *vp[i].revents |= POLLIN;
3217 case VPPCOM_ECONNRESET:
3218 *vp[i].revents = POLLHUP;
3222 *vp[i].revents = POLLERR;
3229 if (POLLOUT & vp[i].events)
3231 rv = vppcom_session_write_ready (session);
3234 *vp[i].revents |= POLLOUT;
3241 case VPPCOM_ECONNRESET:
3242 *vp[i].revents = POLLHUP;
3246 *vp[i].revents = POLLERR;
3253 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3255 *vp[i].revents = POLLNVAL;
3259 if (wait_for_time != -1)
3260 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3262 while ((num_ev == 0) && keep_trying);
3264 if (VPPCOM_DEBUG > 3)
3266 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3267 for (i = 0; i < n_sids; i++)
3269 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3270 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3271 vp[i].events, *vp[i].revents);
3278 vppcom_mq_epoll_fd (void)
3280 vcl_worker_t *wrk = vcl_worker_get_current ();
3281 return wrk->mqs_epfd;
3285 vppcom_session_index (uint32_t session_handle)
3287 return session_handle & 0xFFFFFF;
3291 vppcom_worker_register (void)
3293 if (vcl_worker_alloc_and_init ())
3295 return VPPCOM_EEXIST;
3299 * fd.io coding-style-patch-verification: ON
3302 * eval: (c-set-style "gnu")