2 * Copyright (c) 2017 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
18 #include <svm/svm_fifo_segment.h>
19 #include <vcl/vppcom.h>
20 #include <vcl/vcl_debug.h>
21 #include <vcl/vcl_private.h>
23 __thread uword __vcl_worker_index = ~0;
27 vcl_wait_for_segment (u64 segment_handle)
29 vcl_worker_t *wrk = vcl_worker_get_current ();
30 u32 wait_for_seconds = 10, segment_index;
33 if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
36 timeout = clib_time_now (&wrk->clib_time) + wait_for_seconds;
37 while (clib_time_now (&wrk->clib_time) < timeout)
39 segment_index = vcl_segment_table_lookup (segment_handle);
40 if (segment_index != VCL_INVALID_SEGMENT_INDEX)
48 vppcom_session_state_str (session_state_t state)
70 case STATE_CLOSE_ON_EMPTY:
71 st = "STATE_CLOSE_ON_EMPTY";
74 case STATE_DISCONNECT:
75 st = "STATE_DISCONNECT";
91 format_ip4_address (u8 * s, va_list * args)
93 u8 *a = va_arg (*args, u8 *);
94 return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
98 format_ip6_address (u8 * s, va_list * args)
100 ip6_address_t *a = va_arg (*args, ip6_address_t *);
101 u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon;
103 i_max_n_zero = ARRAY_LEN (a->as_u16);
105 i_first_zero = i_max_n_zero;
107 for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
109 u32 is_zero = a->as_u16[i] == 0;
110 if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16))
116 if ((!is_zero && n_zeros > max_n_zeros)
117 || (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros))
119 i_max_n_zero = i_first_zero;
120 max_n_zeros = n_zeros;
121 i_first_zero = ARRAY_LEN (a->as_u16);
126 last_double_colon = 0;
127 for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
129 if (i == i_max_n_zero && max_n_zeros > 1)
131 s = format (s, "::");
132 i += max_n_zeros - 1;
133 last_double_colon = 1;
137 s = format (s, "%s%x",
138 (last_double_colon || i == 0) ? "" : ":",
139 clib_net_to_host_u16 (a->as_u16[i]));
140 last_double_colon = 0;
147 /* Format an IP46 address. */
149 format_ip46_address (u8 * s, va_list * args)
151 ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
152 ip46_type_t type = va_arg (*args, ip46_type_t);
158 is_ip4 = ip46_address_is_ip4 (ip46);
169 format (s, "%U", format_ip4_address, &ip46->ip4) :
170 format (s, "%U", format_ip6_address, &ip46->ip6);
174 * VPPCOM Utility Functions
179 vcl_session_vpp_evt_q (vcl_worker_t * wrk, vcl_session_t * s)
181 if (vcl_session_is_ct (s))
182 return wrk->vpp_event_queues[0];
184 return wrk->vpp_event_queues[s->tx_fifo->master_thread_index];
188 vcl_send_session_accepted_reply (svm_msg_q_t * mq, u32 context,
189 session_handle_t handle, int retval)
191 app_session_evt_t _app_evt, *app_evt = &_app_evt;
192 session_accepted_reply_msg_t *rmp;
193 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_ACCEPTED_REPLY);
194 rmp = (session_accepted_reply_msg_t *) app_evt->evt->data;
195 rmp->handle = handle;
196 rmp->context = context;
197 rmp->retval = retval;
198 app_send_ctrl_evt_to_vpp (mq, app_evt);
202 vcl_send_session_disconnected_reply (svm_msg_q_t * mq, u32 context,
203 session_handle_t handle, int retval)
205 app_session_evt_t _app_evt, *app_evt = &_app_evt;
206 session_disconnected_reply_msg_t *rmp;
207 app_alloc_ctrl_evt_to_vpp (mq, app_evt,
208 SESSION_CTRL_EVT_DISCONNECTED_REPLY);
209 rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
210 rmp->handle = handle;
211 rmp->context = context;
212 rmp->retval = retval;
213 app_send_ctrl_evt_to_vpp (mq, app_evt);
217 vcl_send_session_reset_reply (svm_msg_q_t * mq, u32 context,
218 session_handle_t handle, int retval)
220 app_session_evt_t _app_evt, *app_evt = &_app_evt;
221 session_reset_reply_msg_t *rmp;
222 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_RESET_REPLY);
223 rmp = (session_reset_reply_msg_t *) app_evt->evt->data;
224 rmp->handle = handle;
225 rmp->context = context;
226 rmp->retval = retval;
227 app_send_ctrl_evt_to_vpp (mq, app_evt);
231 vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp)
233 vcl_session_t *session, *listen_session;
234 svm_fifo_t *rx_fifo, *tx_fifo;
238 session = vcl_session_alloc (wrk);
240 listen_session = vcl_session_table_lookup_listener (wrk,
241 mp->listener_handle);
245 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
246 clib_warning ("VCL<%d>: ERROR: couldn't find listen session: "
247 "unknown vpp listener handle %llx",
248 getpid (), mp->listener_handle);
249 vcl_send_session_accepted_reply (evt_q, mp->context, mp->handle,
250 VNET_API_ERROR_INVALID_ARGUMENT);
251 vcl_session_free (wrk, session);
252 return VCL_INVALID_SESSION_INDEX;
255 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
256 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
258 if (mp->server_event_queue_address)
260 session->vpp_evt_q = uword_to_pointer (mp->client_event_queue_address,
262 session->our_evt_q = uword_to_pointer (mp->server_event_queue_address,
264 if (vcl_wait_for_segment (mp->segment_handle))
266 clib_warning ("segment for session %u couldn't be mounted!",
267 session->session_index);
268 return VCL_INVALID_SESSION_INDEX;
270 rx_fifo->master_session_index = session->session_index;
271 tx_fifo->master_session_index = session->session_index;
272 rx_fifo->master_thread_index = vcl_get_worker_index ();
273 tx_fifo->master_thread_index = vcl_get_worker_index ();
274 vec_validate (wrk->vpp_event_queues, 0);
275 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
276 wrk->vpp_event_queues[0] = evt_q;
280 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
282 rx_fifo->client_session_index = session->session_index;
283 tx_fifo->client_session_index = session->session_index;
284 rx_fifo->client_thread_index = vcl_get_worker_index ();
285 tx_fifo->client_thread_index = vcl_get_worker_index ();
286 vpp_wrk_index = tx_fifo->master_thread_index;
287 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
288 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
291 session->vpp_handle = mp->handle;
292 session->client_context = mp->context;
293 session->rx_fifo = rx_fifo;
294 session->tx_fifo = tx_fifo;
296 session->session_state = STATE_ACCEPT;
297 session->transport.rmt_port = mp->port;
298 session->transport.is_ip4 = mp->is_ip4;
299 clib_memcpy_fast (&session->transport.rmt_ip, mp->ip,
300 sizeof (ip46_address_t));
302 vcl_session_table_add_vpp_handle (wrk, mp->handle, session->session_index);
303 session->transport.lcl_port = listen_session->transport.lcl_port;
304 session->transport.lcl_ip = listen_session->transport.lcl_ip;
305 session->session_type = listen_session->session_type;
306 session->is_dgram = session->session_type == VPPCOM_PROTO_UDP;
308 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: client accept request from %s"
309 " address %U port %d queue %p!", getpid (), mp->handle,
310 session->session_index,
311 mp->is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &mp->ip,
312 mp->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
313 clib_net_to_host_u16 (mp->port), session->vpp_evt_q);
314 vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index);
316 return session->session_index;
320 vcl_session_connected_handler (vcl_worker_t * wrk,
321 session_connected_msg_t * mp)
323 u32 session_index, vpp_wrk_index;
324 svm_fifo_t *rx_fifo, *tx_fifo;
325 vcl_session_t *session = 0;
328 session_index = mp->context;
329 session = vcl_session_get (wrk, session_index);
332 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
333 "Invalid session index (%u)!",
334 getpid (), mp->handle, session_index);
335 return VCL_INVALID_SESSION_INDEX;
339 clib_warning ("VCL<%d>: ERROR: sid %u: connect failed! %U", getpid (),
340 session_index, format_api_error, ntohl (mp->retval));
341 session->session_state = STATE_FAILED;
342 session->vpp_handle = mp->handle;
343 return session_index;
346 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
347 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
348 if (vcl_wait_for_segment (mp->segment_handle))
350 clib_warning ("segment for session %u couldn't be mounted!",
351 session->session_index);
352 return VCL_INVALID_SESSION_INDEX;
355 rx_fifo->client_session_index = session_index;
356 tx_fifo->client_session_index = session_index;
357 rx_fifo->client_thread_index = vcl_get_worker_index ();
358 tx_fifo->client_thread_index = vcl_get_worker_index ();
360 if (mp->client_event_queue_address)
362 session->vpp_evt_q = uword_to_pointer (mp->server_event_queue_address,
364 session->our_evt_q = uword_to_pointer (mp->client_event_queue_address,
367 vec_validate (wrk->vpp_event_queues, 0);
368 evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
369 wrk->vpp_event_queues[0] = evt_q;
373 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
375 vpp_wrk_index = tx_fifo->master_thread_index;
376 vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
377 wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
380 session->rx_fifo = rx_fifo;
381 session->tx_fifo = tx_fifo;
382 session->vpp_handle = mp->handle;
383 session->transport.is_ip4 = mp->is_ip4;
384 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
385 sizeof (session->transport.lcl_ip));
386 session->transport.lcl_port = mp->lcl_port;
387 session->session_state = STATE_CONNECT;
389 /* Add it to lookup table */
390 hash_set (wrk->session_index_by_vpp_handles, mp->handle, session_index);
392 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: connect succeeded! "
393 "session_rx_fifo %p, refcnt %d, session_tx_fifo %p, refcnt %d",
394 getpid (), mp->handle, session_index, session->rx_fifo,
395 session->rx_fifo->refcnt, session->tx_fifo, session->tx_fifo->refcnt);
397 return session_index;
401 vcl_session_reset_handler (vcl_worker_t * wrk,
402 session_reset_msg_t * reset_msg)
404 vcl_session_t *session;
407 sid = vcl_session_index_from_vpp_handle (wrk, reset_msg->handle);
408 session = vcl_session_get (wrk, sid);
411 VDBG (0, "request to reset unknown handle 0x%llx", reset_msg->handle);
412 return VCL_INVALID_SESSION_INDEX;
414 session->session_state = STATE_CLOSE_ON_EMPTY;
415 VDBG (0, "reset handle 0x%llx, sid %u ", reset_msg->handle, sid);
416 vcl_send_session_reset_reply (vcl_session_vpp_evt_q (wrk, session),
417 wrk->my_client_index, reset_msg->handle, 0);
422 vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp)
424 vcl_session_t *session;
425 u32 sid = mp->context;
427 session = vcl_session_get (wrk, sid);
430 VERR ("vpp handle 0x%llx, sid %u: bind failed: %U", mp->handle, sid,
431 format_api_error, mp->retval);
434 session->session_state = STATE_FAILED;
435 session->vpp_handle = mp->handle;
440 clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: "
441 "Invalid session index (%u)!",
442 getpid (), mp->handle, sid);
443 return VCL_INVALID_SESSION_INDEX;
447 session->vpp_handle = mp->handle;
448 session->transport.is_ip4 = mp->lcl_is_ip4;
449 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
450 sizeof (ip46_address_t));
451 session->transport.lcl_port = mp->lcl_port;
452 vcl_session_table_add_listener (wrk, mp->handle, sid);
453 session->session_state = STATE_LISTEN;
455 if (session->is_dgram)
457 svm_fifo_t *rx_fifo, *tx_fifo;
458 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
459 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
460 rx_fifo->client_session_index = sid;
461 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
462 tx_fifo->client_session_index = sid;
463 session->rx_fifo = rx_fifo;
464 session->tx_fifo = tx_fifo;
467 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: bind succeeded!",
468 getpid (), mp->handle, sid);
473 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
475 session_accepted_msg_t *accepted_msg;
476 session_disconnected_msg_t *disconnected_msg;
477 vcl_session_msg_t *vcl_msg;
478 vcl_session_t *session;
482 switch (e->event_type)
484 case FIFO_EVENT_APP_RX:
485 case FIFO_EVENT_APP_TX:
486 case SESSION_IO_EVT_CT_RX:
487 case SESSION_IO_EVT_CT_TX:
488 vec_add1 (wrk->unhandled_evts_vector, *e);
490 case SESSION_CTRL_EVT_ACCEPTED:
491 accepted_msg = (session_accepted_msg_t *) e->data;
492 handle = accepted_msg->listener_handle;
493 session = vcl_session_table_lookup_listener (wrk, handle);
496 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
497 "listener handle %llx", getpid (), handle);
501 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
502 vcl_msg->accepted_msg = *accepted_msg;
504 case SESSION_CTRL_EVT_CONNECTED:
505 vcl_session_connected_handler (wrk,
506 (session_connected_msg_t *) e->data);
508 case SESSION_CTRL_EVT_DISCONNECTED:
509 disconnected_msg = (session_disconnected_msg_t *) e->data;
510 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
511 session = vcl_session_get (wrk, sid);
514 VDBG (0, "request to disconnect unknown handle 0x%llx",
515 disconnected_msg->handle);
518 session->session_state = STATE_DISCONNECT;
519 VDBG (0, "disconnected handle 0x%llx, sid %u", disconnected_msg->handle,
522 case SESSION_CTRL_EVT_RESET:
523 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
525 case SESSION_CTRL_EVT_BOUND:
526 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
529 clib_warning ("unhandled %u", e->event_type);
535 vppcom_wait_for_session_state_change (u32 session_index,
536 session_state_t state,
539 vcl_worker_t *wrk = vcl_worker_get_current ();
540 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
541 vcl_session_t *volatile session;
547 session = vcl_session_get (wrk, session_index);
548 if (PREDICT_FALSE (!session))
550 return VPPCOM_EBADFD;
552 if (session->session_state & state)
556 if (session->session_state & STATE_FAILED)
558 return VPPCOM_ECONNREFUSED;
561 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
566 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
567 vcl_handle_mq_event (wrk, e);
568 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
570 while (clib_time_now (&wrk->clib_time) < timeout);
572 VDBG (0, "VCL<%d>: timeout waiting for state 0x%x (%s)", getpid (), state,
573 vppcom_session_state_str (state));
574 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
576 return VPPCOM_ETIMEDOUT;
580 vppcom_app_session_enable (void)
584 if (vcm->app_state != STATE_APP_ENABLED)
586 vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
587 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
588 if (PREDICT_FALSE (rv))
590 VDBG (0, "VCL<%d>: application session enable timed out! "
591 "returning %d (%s)", getpid (), rv, vppcom_retval_str (rv));
599 vppcom_app_attach (void)
603 vppcom_app_send_attach ();
604 rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED);
605 if (PREDICT_FALSE (rv))
607 VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)",
608 getpid (), rv, vppcom_retval_str (rv));
616 vppcom_session_unbind (u32 session_handle)
618 vcl_worker_t *wrk = vcl_worker_get_current ();
619 vcl_session_t *session = 0;
622 session = vcl_session_get_w_handle (wrk, session_handle);
624 return VPPCOM_EBADFD;
626 vpp_handle = session->vpp_handle;
627 vcl_session_table_del_listener (wrk, vpp_handle);
628 session->vpp_handle = ~0;
629 session->session_state = STATE_DISCONNECT;
631 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state"
632 " 0x%x (%s)", getpid (), vpp_handle, session_handle, STATE_DISCONNECT,
633 vppcom_session_state_str (STATE_DISCONNECT));
634 vcl_evt (VCL_EVT_UNBIND, session);
635 vppcom_send_unbind_sock (vpp_handle);
641 vppcom_session_disconnect (u32 session_handle)
643 vcl_worker_t *wrk = vcl_worker_get_current ();
644 svm_msg_q_t *vpp_evt_q;
645 vcl_session_t *session;
646 session_state_t state;
649 session = vcl_session_get_w_handle (wrk, session_handle);
651 return VPPCOM_EBADFD;
653 vpp_handle = session->vpp_handle;
654 state = session->session_state;
656 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (),
657 vpp_handle, session_handle, state, vppcom_session_state_str (state));
659 if (PREDICT_FALSE (state & STATE_LISTEN))
661 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
662 "Cannot disconnect a listen socket!",
663 getpid (), vpp_handle, session_handle);
664 return VPPCOM_EBADFD;
667 if (state & STATE_CLOSE_ON_EMPTY)
669 vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
670 vcl_send_session_disconnected_reply (vpp_evt_q, wrk->my_client_index,
672 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect "
673 "REPLY...", getpid (), vpp_handle, session_handle);
677 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...",
678 getpid (), vpp_handle, session_handle);
679 vppcom_send_disconnect_session (vpp_handle);
686 vcl_cleanup_bapi (void)
688 socket_client_main_t *scm = &socket_client_main;
689 api_main_t *am = &api_main;
691 am->my_client_index = ~0;
692 am->my_registration = 0;
693 am->vl_input_queue = 0;
694 am->msg_index_by_name_and_crc = 0;
697 vl_client_api_unmap ();
701 vcl_cleanup_forked_child (vcl_worker_t * wrk, vcl_worker_t * child_wrk)
703 vcl_worker_t *sub_child;
706 if (child_wrk->forked_child != ~0)
708 sub_child = vcl_worker_get_if_valid (child_wrk->forked_child);
711 /* Wait a bit, maybe the process is going away */
712 while (kill (sub_child->current_pid, 0) >= 0 && tries++ < 50)
714 if (kill (sub_child->current_pid, 0) < 0)
715 vcl_cleanup_forked_child (child_wrk, sub_child);
718 vcl_worker_cleanup (child_wrk, 1 /* notify vpp */ );
719 VDBG (0, "Cleaned up wrk %u", child_wrk->wrk_index);
720 wrk->forked_child = ~0;
723 static struct sigaction old_sa;
726 vcl_intercept_sigchld_handler (int signum, siginfo_t * si, void *uc)
728 vcl_worker_t *wrk, *child_wrk;
730 if (vcl_get_worker_index () == ~0)
733 sigaction (SIGCHLD, &old_sa, 0);
735 wrk = vcl_worker_get_current ();
736 if (wrk->forked_child == ~0)
739 child_wrk = vcl_worker_get_if_valid (wrk->forked_child);
740 if (si->si_pid != child_wrk->current_pid)
742 VDBG (0, "unexpected child pid %u", si->si_pid);
746 vcl_cleanup_forked_child (wrk, child_wrk);
748 if (old_sa.sa_flags & SA_SIGINFO)
750 void (*fn) (int, siginfo_t *, void *) = old_sa.sa_sigaction;
755 void (*fn) (int) = old_sa.sa_handler;
762 vcl_incercept_sigchld ()
765 clib_memset (&sa, 0, sizeof (sa));
766 sa.sa_sigaction = vcl_intercept_sigchld_handler;
767 sa.sa_flags = SA_SIGINFO;
768 if (sigaction (SIGCHLD, &sa, &old_sa))
770 VERR ("couldn't intercept sigchld");
776 vcl_app_pre_fork (void)
778 vcl_incercept_sigchld ();
782 vcl_app_fork_child_handler (void)
784 int rv, parent_wrk_index;
785 vcl_worker_t *parent_wrk;
788 parent_wrk_index = vcl_get_worker_index ();
789 VDBG (0, "initializing forked child with parent wrk %u", parent_wrk_index);
794 vcl_set_worker_index (~0);
795 if (!vcl_worker_alloc_and_init ())
796 VERR ("couldn't allocate new worker");
799 * Attach to binary api
801 child_name = format (0, "%v-child-%u%c", vcm->app_name, getpid (), 0);
803 vppcom_api_hookup ();
804 vcm->app_state = STATE_APP_START;
805 rv = vppcom_connect_to_vpp ((char *) child_name);
806 vec_free (child_name);
809 VERR ("couldn't connect to VPP!");
814 * Register worker with vpp and share sessions
816 vcl_worker_register_with_vpp ();
817 parent_wrk = vcl_worker_get (parent_wrk_index);
818 vcl_worker_share_sessions (parent_wrk);
819 parent_wrk->forked_child = vcl_get_worker_index ();
821 VDBG (0, "forked child main worker initialized");
826 vcl_app_fork_parent_handler (void)
836 * Notify vpp of the disconnect and mark the worker as free. If we're the
837 * last worker, do a full cleanup otherwise, since we're probably a forked
838 * child, avoid syscalls as much as possible. We might've lost privileges.
841 vppcom_app_exit (void)
843 if (!pool_elts (vcm->workers))
845 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
846 vcl_set_worker_index (~0);
848 if (vec_len (vcm->workers) == 1)
849 vl_client_disconnect_from_vlib ();
851 vl_client_send_disconnect ();
855 * VPPCOM Public API functions
858 vppcom_app_create (char *app_name)
860 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
865 clib_warning ("vcl<%u> already initialized", getpid ());
870 vppcom_cfg (&vcm->cfg);
873 vcm->main_cpu = pthread_self ();
874 vcm->main_pid = getpid ();
875 vcm->app_name = format (0, "%s", app_name);
876 vppcom_init_error_string_table ();
877 svm_fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva,
878 20 /* timeout in secs */ );
879 pool_alloc (vcm->workers, vcl_cfg->max_workers);
880 clib_spinlock_init (&vcm->workers_lock);
881 clib_rwlock_init (&vcm->segment_table_lock);
882 pthread_atfork (vcl_app_pre_fork, vcl_app_fork_parent_handler,
883 vcl_app_fork_child_handler);
884 atexit (vppcom_app_exit);
886 /* Allocate default worker */
887 vcl_worker_alloc_and_init ();
889 /* API hookup and connect to VPP */
890 vppcom_api_hookup ();
892 vcm->app_state = STATE_APP_START;
893 rv = vppcom_connect_to_vpp (app_name);
896 VERR ("couldn't connect to VPP!");
899 VDBG (0, "sending session enable");
900 rv = vppcom_app_session_enable ();
903 VERR ("vppcom_app_session_enable() failed!");
907 VDBG (0, "sending app attach");
908 rv = vppcom_app_attach ();
911 VERR ("vppcom_app_attach() failed!");
915 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
916 vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
922 vppcom_app_destroy (void)
925 f64 orig_app_timeout;
927 if (!pool_elts (vcm->workers))
930 vcl_evt (VCL_EVT_DETACH, vcm);
932 if (pool_elts (vcm->workers) == 1)
934 vppcom_app_send_detach ();
935 orig_app_timeout = vcm->cfg.app_timeout;
936 vcm->cfg.app_timeout = 2.0;
937 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
938 vcm->cfg.app_timeout = orig_app_timeout;
939 if (PREDICT_FALSE (rv))
940 VDBG (0, "application detach timed out! returning %d (%s)", rv,
941 vppcom_retval_str (rv));
942 vec_free (vcm->app_name);
943 vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ );
947 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
950 vcl_set_worker_index (~0);
952 vl_client_disconnect_from_vlib ();
956 vppcom_session_create (u8 proto, u8 is_nonblocking)
958 vcl_worker_t *wrk = vcl_worker_get_current ();
959 vcl_session_t *session;
961 session = vcl_session_alloc (wrk);
963 session->session_type = proto;
964 session->session_state = STATE_START;
965 session->vpp_handle = ~0;
966 session->is_dgram = proto == VPPCOM_PROTO_UDP;
969 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
971 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
972 is_nonblocking, session_index);
974 VDBG (0, "created sid %u", session->session_index);
976 return vcl_session_handle (session);
980 vppcom_session_close (uint32_t session_handle)
982 vcl_worker_t *wrk = vcl_worker_get_current ();
983 u8 is_vep, do_disconnect = 1;
984 vcl_session_t *session = 0;
985 session_state_t state;
990 session = vcl_session_get_w_handle (wrk, session_handle);
992 return VPPCOM_EBADFD;
994 if (session->shared_index != ~0)
995 do_disconnect = vcl_worker_unshare_session (wrk, session);
997 is_vep = session->is_vep;
998 next_sh = session->vep.next_sh;
999 vep_sh = session->vep.vep_sh;
1000 state = session->session_state;
1001 vpp_handle = session->vpp_handle;
1003 VDBG (0, "Closing session handle %u vpp handle %u", session_handle,
1008 while (next_sh != ~0)
1010 rv = vppcom_epoll_ctl (session_handle, EPOLL_CTL_DEL, next_sh, 0);
1011 if (PREDICT_FALSE (rv < 0))
1012 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u"
1013 " failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
1014 vppcom_retval_str (rv));
1016 next_sh = session->vep.next_sh;
1021 if (session->is_vep_session)
1023 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, session_handle, 0);
1025 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u "
1026 "failed! rv %d (%s)", vpp_handle, session_handle, vep_sh,
1027 rv, vppcom_retval_str (rv));
1033 if (state & STATE_LISTEN)
1035 rv = vppcom_session_unbind (session_handle);
1036 if (PREDICT_FALSE (rv < 0))
1037 VDBG (0, "vpp handle 0x%llx, sid %u: listener unbind failed! "
1038 "rv %d (%s)", vpp_handle, session_handle, rv,
1039 vppcom_retval_str (rv));
1041 else if (state & STATE_OPEN)
1043 rv = vppcom_session_disconnect (session_handle);
1044 if (PREDICT_FALSE (rv < 0))
1045 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1046 "session disconnect failed! rv %d (%s)",
1047 getpid (), vpp_handle, session_handle,
1048 rv, vppcom_retval_str (rv));
1054 if (vcl_session_is_ct (session))
1056 vcl_cut_through_registration_t *ctr;
1059 mq_addr = pointer_to_uword (session->our_evt_q);
1060 ctr = vcl_ct_registration_lock_and_lookup (wrk, mq_addr);
1062 if (ctr->epoll_evt_conn_index != ~0)
1063 vcl_mq_epoll_del_evfd (wrk, ctr->epoll_evt_conn_index);
1064 VDBG (0, "Removing ct registration %u",
1065 vcl_ct_registration_index (wrk, ctr));
1066 vcl_ct_registration_del (wrk, ctr);
1067 vcl_ct_registration_lookup_del (wrk, mq_addr);
1068 vcl_ct_registration_unlock (wrk);
1071 if (vpp_handle != ~0)
1073 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
1075 vcl_session_free (wrk, session);
1077 VDBG (0, "session handle %u vpp handle %u removed", session_handle,
1080 vcl_evt (VCL_EVT_CLOSE, session, rv);
1086 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1088 vcl_worker_t *wrk = vcl_worker_get_current ();
1089 vcl_session_t *session = 0;
1092 return VPPCOM_EINVAL;
1094 session = vcl_session_get_w_handle (wrk, session_handle);
1096 return VPPCOM_EBADFD;
1098 if (session->is_vep)
1100 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1101 "bind to an epoll session!", getpid (), session_handle);
1102 return VPPCOM_EBADFD;
1105 session->transport.is_ip4 = ep->is_ip4;
1107 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1108 sizeof (ip4_address_t));
1110 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1111 sizeof (ip6_address_t));
1112 session->transport.lcl_port = ep->port;
1114 VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
1115 "proto %s", getpid (), session_handle,
1116 session->transport.is_ip4 ? "IPv4" : "IPv6",
1117 format_ip46_address, &session->transport.lcl_ip,
1118 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1119 clib_net_to_host_u16 (session->transport.lcl_port),
1120 session->session_type ? "UDP" : "TCP");
1121 vcl_evt (VCL_EVT_BIND, session);
1123 if (session->session_type == VPPCOM_PROTO_UDP)
1124 vppcom_session_listen (session_handle, 10);
1130 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1132 vcl_worker_t *wrk = vcl_worker_get_current ();
1133 vcl_session_t *listen_session = 0;
1134 u64 listen_vpp_handle;
1137 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1138 if (!listen_session)
1139 return VPPCOM_EBADFD;
1141 if (q_len == 0 || q_len == ~0)
1142 q_len = vcm->cfg.listen_queue_size;
1144 if (listen_session->is_vep)
1146 clib_warning ("VCL<%d>: ERROR: sid %u: cannot listen on an "
1147 "epoll session!", getpid (), listen_sh);
1148 return VPPCOM_EBADFD;
1151 listen_vpp_handle = listen_session->vpp_handle;
1152 if (listen_session->session_state & STATE_LISTEN)
1154 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: already in listen state!",
1155 getpid (), listen_vpp_handle, listen_sh);
1159 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: sending VPP bind+listen "
1160 "request...", getpid (), listen_vpp_handle, listen_sh);
1163 * Send listen request to vpp and wait for reply
1165 vppcom_send_bind_sock (listen_session);
1166 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1168 vcm->cfg.session_timeout);
1170 if (PREDICT_FALSE (rv))
1172 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1173 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: bind+listen failed! "
1174 "returning %d (%s)", getpid (), listen_session->vpp_handle,
1175 listen_sh, rv, vppcom_retval_str (rv));
1183 validate_args_session_accept_ (vcl_worker_t * wrk,
1184 vcl_session_t * listen_session)
1186 /* Input validation - expects spinlock on sessions_lockp */
1187 if (listen_session->is_vep)
1189 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1190 "epoll session!", getpid (),
1191 listen_session->session_index);
1192 return VPPCOM_EBADFD;
1195 if (listen_session->session_state != STATE_LISTEN)
1197 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1198 "not in listen state! state 0x%x (%s)", getpid (),
1199 listen_session->vpp_handle, listen_session->session_index,
1200 listen_session->session_state,
1201 vppcom_session_state_str (listen_session->session_state));
1202 return VPPCOM_EBADFD;
1208 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1211 u32 client_session_index = ~0, listen_session_index;
1212 vcl_worker_t *wrk = vcl_worker_get_current ();
1213 session_accepted_msg_t accepted_msg;
1214 vcl_session_t *listen_session = 0;
1215 vcl_session_t *client_session = 0;
1216 svm_msg_q_t *vpp_evt_q;
1217 vcl_session_msg_t *evt;
1218 u64 listen_vpp_handle;
1219 svm_msg_q_msg_t msg;
1224 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1225 if (!listen_session)
1226 return VPPCOM_EBADFD;
1228 listen_session_index = listen_session->session_index;
1229 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1232 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1234 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1235 accepted_msg = evt->accepted_msg;
1239 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1240 VCL_SESS_ATTR_NONBLOCK);
1241 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1242 return VPPCOM_EAGAIN;
1246 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1247 return VPPCOM_EAGAIN;
1249 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1250 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1252 clib_warning ("discarded event: %u", e->event_type);
1253 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1256 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1257 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1263 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1264 listen_session = vcl_session_get (wrk, listen_session_index);
1265 client_session = vcl_session_get (wrk, client_session_index);
1267 if (flags & O_NONBLOCK)
1268 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1270 listen_vpp_handle = listen_session->vpp_handle;
1271 VDBG (0, "vpp handle 0x%llx, sid %u: Got a client request! "
1272 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1273 listen_vpp_handle, listen_session_handle,
1274 client_session->vpp_handle, client_session_index,
1275 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1276 VCL_SESS_ATTR_NONBLOCK));
1280 ep->is_ip4 = client_session->transport.is_ip4;
1281 ep->port = client_session->transport.rmt_port;
1282 if (client_session->transport.is_ip4)
1283 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1284 sizeof (ip4_address_t));
1286 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1287 sizeof (ip6_address_t));
1290 if (accepted_msg.server_event_queue_address)
1291 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1294 vpp_evt_q = client_session->vpp_evt_q;
1296 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1297 client_session->vpp_handle, 0);
1299 VDBG (0, "vpp handle 0x%llx, sid %u: accepted vpp handle 0x%llx, "
1300 "sid %u connection from peer %s address %U port %u to local %s "
1301 "address %U port %u", listen_vpp_handle,
1302 listen_session_handle, client_session->vpp_handle,
1303 client_session_index,
1304 client_session->transport.is_ip4 ? "IPv4" : "IPv6",
1305 format_ip46_address, &client_session->transport.rmt_ip,
1306 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1307 clib_net_to_host_u16 (client_session->transport.rmt_port),
1308 client_session->transport.is_ip4 ? "IPv4" : "IPv6",
1309 format_ip46_address, &client_session->transport.lcl_ip,
1310 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1311 clib_net_to_host_u16 (client_session->transport.lcl_port));
1312 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1313 client_session_index);
1315 return vcl_session_handle (client_session);
1319 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1321 vcl_worker_t *wrk = vcl_worker_get_current ();
1322 vcl_session_t *session = 0;
1326 session = vcl_session_get_w_handle (wrk, session_handle);
1328 return VPPCOM_EBADFD;
1329 session_index = session->session_index;
1331 if (PREDICT_FALSE (session->is_vep))
1333 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1334 "connect on an epoll session!", getpid (),
1336 return VPPCOM_EBADFD;
1339 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1341 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
1342 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1343 getpid (), session->vpp_handle, session_handle,
1344 session->transport.is_ip4 ? "IPv4" : "IPv6",
1345 format_ip46_address,
1346 &session->transport.rmt_ip, session->transport.is_ip4 ?
1347 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1348 clib_net_to_host_u16 (session->transport.rmt_port),
1349 session->session_type ? "UDP" : "TCP", session->session_state,
1350 vppcom_session_state_str (session->session_state));
1354 session->transport.is_ip4 = server_ep->is_ip4;
1355 if (session->transport.is_ip4)
1356 clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
1357 sizeof (ip4_address_t));
1359 clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
1360 sizeof (ip6_address_t));
1361 session->transport.rmt_port = server_ep->port;
1363 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
1365 getpid (), session->vpp_handle, session_handle,
1366 session->transport.is_ip4 ? "IPv4" : "IPv6",
1367 format_ip46_address,
1368 &session->transport.rmt_ip, session->transport.is_ip4 ?
1369 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1370 clib_net_to_host_u16 (session->transport.rmt_port),
1371 session->session_type ? "UDP" : "TCP");
1374 * Send connect request and wait for reply from vpp
1376 vppcom_send_connect_sock (session);
1377 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1378 vcm->cfg.session_timeout);
1380 session = vcl_session_get (wrk, session_index);
1382 if (PREDICT_FALSE (rv))
1384 if (VPPCOM_DEBUG > 0)
1387 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1388 "failed! returning %d (%s)", getpid (),
1389 session->vpp_handle, session_handle, rv,
1390 vppcom_retval_str (rv));
1392 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1393 "returning %d (%s)", getpid (),
1394 session_handle, rv, vppcom_retval_str (rv));
1398 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1399 getpid (), session->vpp_handle, session_handle);
1405 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1408 return (e->event_type == FIFO_EVENT_APP_RX
1409 && e->fifo->client_session_index == sid);
1411 return (e->event_type == SESSION_IO_EVT_CT_TX);
1415 vcl_session_is_readable (vcl_session_t * s)
1417 return ((s->session_state & STATE_OPEN)
1418 || (s->session_state == STATE_LISTEN
1419 && s->session_type == VPPCOM_PROTO_UDP));
1423 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1426 vcl_worker_t *wrk = vcl_worker_get_current ();
1427 int n_read = 0, rv, is_nonblocking;
1428 vcl_session_t *s = 0;
1429 svm_fifo_t *rx_fifo;
1430 svm_msg_q_msg_t msg;
1435 if (PREDICT_FALSE (!buf))
1436 return VPPCOM_EINVAL;
1438 s = vcl_session_get_w_handle (wrk, session_handle);
1439 if (PREDICT_FALSE (!s || s->is_vep))
1440 return VPPCOM_EBADFD;
1442 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1444 session_state_t state = s->session_state;
1445 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1447 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! "
1448 "state 0x%x (%s), returning %d (%s)",
1449 getpid (), s->vpp_handle, session_handle, state,
1450 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1454 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1455 is_ct = vcl_session_is_ct (s);
1456 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1457 rx_fifo = s->rx_fifo;
1460 if (svm_fifo_is_empty (rx_fifo))
1464 svm_fifo_unset_event (rx_fifo);
1465 return VPPCOM_EWOULDBLOCK;
1467 while (svm_fifo_is_empty (rx_fifo))
1469 svm_fifo_unset_event (rx_fifo);
1470 svm_msg_q_lock (mq);
1471 if (svm_msg_q_is_empty (mq))
1472 svm_msg_q_wait (mq);
1474 svm_msg_q_sub_w_lock (mq, &msg);
1475 e = svm_msg_q_msg_data (mq, &msg);
1476 svm_msg_q_unlock (mq);
1477 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1479 vcl_handle_mq_event (wrk, e);
1480 svm_msg_q_free_msg (mq, &msg);
1483 svm_msg_q_free_msg (mq, &msg);
1485 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1491 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1493 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1495 if (svm_fifo_is_empty (rx_fifo))
1496 svm_fifo_unset_event (rx_fifo);
1498 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1500 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1501 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1505 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1506 getpid (), s->vpp_handle, session_handle, n_read, rx_fifo);
1512 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1514 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1518 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1520 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1524 vppcom_session_read_segments (uint32_t session_handle,
1525 vppcom_data_segments_t ds)
1527 vcl_worker_t *wrk = vcl_worker_get_current ();
1528 int n_read = 0, rv, is_nonblocking;
1529 vcl_session_t *s = 0;
1530 svm_fifo_t *rx_fifo;
1531 svm_msg_q_msg_t msg;
1536 s = vcl_session_get_w_handle (wrk, session_handle);
1537 if (PREDICT_FALSE (!s || s->is_vep))
1538 return VPPCOM_EBADFD;
1540 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1542 session_state_t state = s->session_state;
1543 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1547 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1548 is_ct = vcl_session_is_ct (s);
1549 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1550 rx_fifo = s->rx_fifo;
1553 if (svm_fifo_is_empty (rx_fifo))
1557 svm_fifo_unset_event (rx_fifo);
1558 return VPPCOM_EWOULDBLOCK;
1560 while (svm_fifo_is_empty (rx_fifo))
1562 svm_fifo_unset_event (rx_fifo);
1563 svm_msg_q_lock (mq);
1564 if (svm_msg_q_is_empty (mq))
1565 svm_msg_q_wait (mq);
1567 svm_msg_q_sub_w_lock (mq, &msg);
1568 e = svm_msg_q_msg_data (mq, &msg);
1569 svm_msg_q_unlock (mq);
1570 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1572 vcl_handle_mq_event (wrk, e);
1573 svm_msg_q_free_msg (mq, &msg);
1576 svm_msg_q_free_msg (mq, &msg);
1578 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1583 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1584 svm_fifo_unset_event (rx_fifo);
1586 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1588 /* If the peer is not polling send notification */
1589 if (!svm_fifo_has_event (s->rx_fifo))
1590 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1591 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1598 vppcom_session_free_segments (uint32_t session_handle,
1599 vppcom_data_segments_t ds)
1601 vcl_worker_t *wrk = vcl_worker_get_current ();
1604 s = vcl_session_get_w_handle (wrk, session_handle);
1605 if (PREDICT_FALSE (!s || s->is_vep))
1608 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1612 vppcom_session_read_ready (vcl_session_t * session)
1614 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1615 if (PREDICT_FALSE (session->is_vep))
1617 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1618 "epoll session!", getpid (), session->session_index);
1619 return VPPCOM_EBADFD;
1622 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1624 session_state_t state = session->session_state;
1627 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1629 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1630 " state 0x%x (%s), returning %d (%s)", getpid (),
1631 session->vpp_handle, session->session_index, state,
1632 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1636 if (session->session_state & STATE_LISTEN)
1637 return clib_fifo_elts (session->accept_evts_fifo);
1639 return svm_fifo_max_dequeue (session->rx_fifo);
1643 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1645 u32 first_copy = clib_min (ds[0].len, max_bytes);
1646 clib_memcpy_fast (buf, ds[0].data, first_copy);
1647 if (first_copy < max_bytes)
1649 clib_memcpy_fast (buf + first_copy, ds[1].data,
1650 clib_min (ds[1].len, max_bytes - first_copy));
1656 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1659 return (e->event_type == FIFO_EVENT_APP_TX
1660 && e->fifo->client_session_index == sid);
1662 return (e->event_type == SESSION_IO_EVT_CT_RX);
1666 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1668 vcl_worker_t *wrk = vcl_worker_get_current ();
1669 int rv, n_write, is_nonblocking;
1670 vcl_session_t *s = 0;
1671 svm_fifo_t *tx_fifo = 0;
1672 session_evt_type_t et;
1673 svm_msg_q_msg_t msg;
1678 if (PREDICT_FALSE (!buf))
1679 return VPPCOM_EINVAL;
1681 s = vcl_session_get_w_handle (wrk, session_handle);
1682 if (PREDICT_FALSE (!s))
1683 return VPPCOM_EBADFD;
1685 if (PREDICT_FALSE (s->is_vep))
1687 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1688 "cannot write to an epoll session!",
1689 getpid (), s->vpp_handle, session_handle);
1691 return VPPCOM_EBADFD;
1694 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1696 session_state_t state = s->session_state;
1697 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1698 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1699 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1700 state, vppcom_session_state_str (state));
1704 tx_fifo = s->tx_fifo;
1705 is_ct = vcl_session_is_ct (s);
1706 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1707 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1708 if (svm_fifo_is_full (tx_fifo))
1712 return VPPCOM_EWOULDBLOCK;
1714 while (svm_fifo_is_full (tx_fifo))
1716 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1717 svm_msg_q_lock (mq);
1718 if (svm_msg_q_is_empty (mq))
1719 svm_msg_q_wait (mq);
1721 svm_msg_q_sub_w_lock (mq, &msg);
1722 e = svm_msg_q_msg_data (mq, &msg);
1723 svm_msg_q_unlock (mq);
1725 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1726 vcl_handle_mq_event (wrk, e);
1727 svm_msg_q_free_msg (mq, &msg);
1731 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1732 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1734 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1735 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1737 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1740 ASSERT (n_write > 0);
1742 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1743 s->vpp_handle, session_handle, n_write);
1748 static vcl_session_t *
1749 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1752 s = vcl_session_get (wrk, f->client_session_index);
1756 if (type == 0 && s->rx_fifo == f)
1759 if (type == 1 && s->tx_fifo == f)
1762 s = vcl_session_get (wrk, f->master_session_index);
1765 if (type == 0 && s->rx_fifo == f)
1767 if (type == 1 && s->tx_fifo == f)
1774 vppcom_session_write_ready (vcl_session_t * session)
1776 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1777 if (PREDICT_FALSE (session->is_vep))
1779 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1780 "cannot write to an epoll session!",
1781 getpid (), session->vpp_handle, session->session_index);
1782 return VPPCOM_EBADFD;
1785 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1787 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1788 "cannot write to a listen session!",
1789 getpid (), session->vpp_handle, session->session_index);
1790 return VPPCOM_EBADFD;
1793 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1795 session_state_t state = session->session_state;
1798 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1799 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1800 "session is not open! state 0x%x (%s), "
1801 "returning %d (%s)", getpid (), session->vpp_handle,
1802 session->session_index,
1803 state, vppcom_session_state_str (state),
1804 rv, vppcom_retval_str (rv));
1808 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1809 getpid (), session->vpp_handle, session->session_index,
1810 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1812 return svm_fifo_max_enqueue (session->tx_fifo);
1816 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1818 svm_msg_q_msg_t *msg;
1822 n_msgs = svm_msg_q_size (mq);
1823 for (i = 0; i < n_msgs; i++)
1825 vec_add2 (wrk->mq_msg_vector, msg, 1);
1826 svm_msg_q_sub_w_lock (mq, msg);
1831 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1832 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1834 svm_fifo_unset_event (_fifo); \
1835 if (svm_fifo_is_empty (_fifo)) \
1840 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1841 unsigned long n_bits, unsigned long *read_map,
1842 unsigned long *write_map,
1843 unsigned long *except_map, u32 * bits_set)
1845 session_disconnected_msg_t *disconnected_msg;
1846 session_connected_msg_t *connected_msg;
1847 session_accepted_msg_t *accepted_msg;
1848 vcl_session_msg_t *vcl_msg;
1849 vcl_session_t *session;
1853 switch (e->event_type)
1855 case FIFO_EVENT_APP_RX:
1856 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1857 sid = e->fifo->client_session_index;
1858 session = vcl_session_get (wrk, sid);
1861 if (sid < n_bits && read_map)
1863 clib_bitmap_set_no_check (read_map, sid, 1);
1867 case FIFO_EVENT_APP_TX:
1868 sid = e->fifo->client_session_index;
1869 session = vcl_session_get (wrk, sid);
1872 if (sid < n_bits && write_map)
1874 clib_bitmap_set_no_check (write_map, sid, 1);
1878 case SESSION_IO_EVT_CT_TX:
1879 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1880 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
1883 sid = session->session_index;
1884 if (sid < n_bits && read_map)
1886 clib_bitmap_set_no_check (read_map, sid, 1);
1890 case SESSION_IO_EVT_CT_RX:
1891 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
1894 sid = session->session_index;
1895 if (sid < n_bits && write_map)
1897 clib_bitmap_set_no_check (write_map, sid, 1);
1901 case SESSION_CTRL_EVT_ACCEPTED:
1902 accepted_msg = (session_accepted_msg_t *) e->data;
1903 handle = accepted_msg->listener_handle;
1904 session = vcl_session_table_lookup_listener (wrk, handle);
1907 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
1908 "listener handle %llx", getpid (), handle);
1912 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
1913 vcl_msg->accepted_msg = *accepted_msg;
1914 sid = session->session_index;
1915 if (sid < n_bits && read_map)
1917 clib_bitmap_set_no_check (read_map, sid, 1);
1921 case SESSION_CTRL_EVT_CONNECTED:
1922 connected_msg = (session_connected_msg_t *) e->data;
1923 vcl_session_connected_handler (wrk, connected_msg);
1925 case SESSION_CTRL_EVT_DISCONNECTED:
1926 disconnected_msg = (session_disconnected_msg_t *) e->data;
1927 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
1928 if (sid < n_bits && except_map)
1930 clib_bitmap_set_no_check (except_map, sid, 1);
1934 case SESSION_CTRL_EVT_RESET:
1935 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
1936 if (sid < n_bits && except_map)
1938 clib_bitmap_set_no_check (except_map, sid, 1);
1943 clib_warning ("unhandled: %u", e->event_type);
1949 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
1950 unsigned long n_bits, unsigned long *read_map,
1951 unsigned long *write_map, unsigned long *except_map,
1952 double time_to_wait, u32 * bits_set)
1954 svm_msg_q_msg_t *msg;
1958 svm_msg_q_lock (mq);
1959 if (svm_msg_q_is_empty (mq))
1963 svm_msg_q_unlock (mq);
1969 svm_msg_q_unlock (mq);
1972 else if (time_to_wait < 0)
1974 svm_msg_q_wait (mq);
1978 if (svm_msg_q_timedwait (mq, time_to_wait))
1980 svm_msg_q_unlock (mq);
1985 vcl_mq_dequeue_batch (wrk, mq);
1986 svm_msg_q_unlock (mq);
1988 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
1990 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
1991 e = svm_msg_q_msg_data (mq, msg);
1992 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
1993 except_map, bits_set);
1994 svm_msg_q_free_msg (mq, msg);
1996 vec_reset_length (wrk->mq_msg_vector);
2001 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
2002 unsigned long *read_map, unsigned long *write_map,
2003 unsigned long *except_map, double time_to_wait,
2006 double total_wait = 0, wait_slice;
2007 vcl_cut_through_registration_t *cr;
2009 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
2010 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
2013 vcl_ct_registration_lock (wrk);
2015 pool_foreach (cr, wrk->cut_through_registrations, ({
2016 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
2020 vcl_ct_registration_unlock (wrk);
2022 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2023 write_map, except_map, time_to_wait, bits_set);
2024 total_wait += wait_slice;
2028 while (total_wait < time_to_wait);
2034 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
2035 unsigned long *read_map, unsigned long *write_map,
2036 unsigned long *except_map, double time_to_wait,
2039 vcl_mq_evt_conn_t *mqc;
2040 int __clib_unused n_read;
2044 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2045 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2046 vec_len (wrk->mq_events), time_to_wait);
2047 for (i = 0; i < n_mq_evts; i++)
2049 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2050 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2051 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2052 except_map, 0, bits_set);
2055 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2059 vppcom_select (unsigned long n_bits, unsigned long *read_map,
2060 unsigned long *write_map, unsigned long *except_map,
2061 double time_to_wait)
2063 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2064 vcl_worker_t *wrk = vcl_worker_get_current ();
2065 vcl_session_t *session = 0;
2068 ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
2070 if (n_bits && read_map)
2072 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2073 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2074 vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2075 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2077 if (n_bits && write_map)
2079 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2080 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2081 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2082 memset (write_map, 0,
2083 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2085 if (n_bits && except_map)
2087 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2088 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2089 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2090 memset (except_map, 0,
2091 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2101 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2102 if (!(session = vcl_session_get (wrk, sid)))
2104 if (except_map && sid < minbits)
2105 clib_bitmap_set_no_check (except_map, sid, 1);
2109 rv = svm_fifo_is_full (session->tx_fifo);
2112 clib_bitmap_set_no_check (write_map, sid, 1);
2121 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2122 if (!(session = vcl_session_get (wrk, sid)))
2124 if (except_map && sid < minbits)
2125 clib_bitmap_set_no_check (except_map, sid, 1);
2129 rv = vppcom_session_read_ready (session);
2132 clib_bitmap_set_no_check (read_map, sid, 1);
2140 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2142 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2143 read_map, write_map, except_map, &bits_set);
2145 vec_reset_length (wrk->unhandled_evts_vector);
2147 if (vcm->cfg.use_mq_eventfd)
2148 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2149 time_to_wait, &bits_set);
2151 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2152 time_to_wait, &bits_set);
2158 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2160 vcl_session_t *session;
2161 vppcom_epoll_t *vep;
2164 if (VPPCOM_DEBUG <= 1)
2167 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2168 session = vcl_session_get (wrk, vep_idx);
2169 if (PREDICT_FALSE (!session))
2171 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2172 getpid (), vep_idx);
2175 if (PREDICT_FALSE (!session->is_vep))
2177 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2178 getpid (), vep_idx);
2181 vep = &session->vep;
2182 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2185 " is_vep_session = %u\n"
2186 " next_sid = 0x%x (%u)\n"
2187 " wait_cont_idx = 0x%x (%u)\n"
2188 "}\n", getpid (), vep_idx,
2189 session->is_vep, session->is_vep_session,
2190 vep->next_sh, vep->next_sh,
2191 session->wait_cont_idx, session->wait_cont_idx);
2193 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2195 session = vcl_session_get (wrk, sid);
2196 if (PREDICT_FALSE (!session))
2198 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2201 if (PREDICT_FALSE (session->is_vep))
2202 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2203 getpid (), vep_idx);
2204 else if (PREDICT_FALSE (!session->is_vep_session))
2206 clib_warning ("VCL<%d>: ERROR: session (%u) "
2207 "is not a vep session!", getpid (), sid);
2210 vep = &session->vep;
2211 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2212 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2213 "vep_idx (%u)!", getpid (),
2214 sid, session->vep.vep_sh, vep_idx);
2215 if (session->is_vep_session)
2217 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2219 " next_sid = 0x%x (%u)\n"
2220 " prev_sid = 0x%x (%u)\n"
2221 " vep_idx = 0x%x (%u)\n"
2222 " ev.events = 0x%x\n"
2223 " ev.data.u64 = 0x%llx\n"
2227 vep->next_sh, vep->next_sh,
2228 vep->prev_sh, vep->prev_sh,
2229 vep->vep_sh, vep->vep_sh,
2230 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2235 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2236 getpid (), vep_idx);
2240 vppcom_epoll_create (void)
2242 vcl_worker_t *wrk = vcl_worker_get_current ();
2243 vcl_session_t *vep_session;
2245 vep_session = vcl_session_alloc (wrk);
2247 vep_session->is_vep = 1;
2248 vep_session->vep.vep_sh = ~0;
2249 vep_session->vep.next_sh = ~0;
2250 vep_session->vep.prev_sh = ~0;
2251 vep_session->wait_cont_idx = ~0;
2252 vep_session->vpp_handle = ~0;
2254 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_sh);
2255 VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!",
2256 getpid (), vep_session->session_index, vep_session->session_index);
2258 return vcl_session_handle (vep_session);
2262 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2263 struct epoll_event *event)
2265 vcl_worker_t *wrk = vcl_worker_get_current ();
2266 vcl_session_t *vep_session;
2267 vcl_session_t *session;
2270 if (vep_handle == session_handle)
2272 clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!",
2273 getpid (), vep_handle);
2274 return VPPCOM_EINVAL;
2277 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2278 if (PREDICT_FALSE (!vep_session))
2280 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_handle);
2281 return VPPCOM_EBADFD;
2283 if (PREDICT_FALSE (!vep_session->is_vep))
2285 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2286 getpid (), vep_handle);
2287 return VPPCOM_EINVAL;
2290 ASSERT (vep_session->vep.vep_sh == ~0);
2291 ASSERT (vep_session->vep.prev_sh == ~0);
2293 session = vcl_session_get_w_handle (wrk, session_handle);
2294 if (PREDICT_FALSE (!session))
2296 VDBG (0, "VCL<%d>: ERROR: Invalid session_handle (%u)!",
2297 getpid (), session_handle);
2298 return VPPCOM_EBADFD;
2300 if (PREDICT_FALSE (session->is_vep))
2302 clib_warning ("ERROR: session_handle (%u) is a vep!", vep_handle);
2303 return VPPCOM_EINVAL;
2309 if (PREDICT_FALSE (!event))
2311 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to "
2312 "epoll_event structure!", getpid ());
2313 return VPPCOM_EINVAL;
2315 if (vep_session->vep.next_sh != ~0)
2317 vcl_session_t *next_session;
2318 next_session = vcl_session_get_w_handle (wrk,
2319 vep_session->vep.next_sh);
2320 if (PREDICT_FALSE (!next_session))
2322 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid "
2323 "vep.next_sid (%u) on vep_idx (%u)!",
2324 getpid (), vep_session->vep.next_sh, vep_handle);
2325 return VPPCOM_EBADFD;
2327 ASSERT (next_session->vep.prev_sh == vep_handle);
2328 next_session->vep.prev_sh = session_handle;
2330 session->vep.next_sh = vep_session->vep.next_sh;
2331 session->vep.prev_sh = vep_handle;
2332 session->vep.vep_sh = vep_handle;
2333 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2334 session->vep.ev = *event;
2335 session->is_vep = 0;
2336 session->is_vep_session = 1;
2337 vep_session->vep.next_sh = session_handle;
2339 VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x, "
2340 "data 0x%llx!", getpid (), vep_handle, session_handle,
2341 event->events, event->data.u64);
2342 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2346 if (PREDICT_FALSE (!event))
2348 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to "
2349 "epoll_event structure!", getpid ());
2353 else if (PREDICT_FALSE (!session->is_vep_session))
2355 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2356 "not a vep session!", getpid (), session_handle);
2360 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2362 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2363 "vep_idx (%u) != vep_idx (%u)!",
2364 getpid (), session_handle,
2365 session->vep.vep_sh, vep_handle);
2369 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2370 session->vep.ev = *event;
2371 VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
2372 " data 0x%llx!", getpid (), vep_handle, session_handle,
2373 event->events, event->data.u64);
2377 if (PREDICT_FALSE (!session->is_vep_session))
2379 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2380 "not a vep session!", getpid (), session_handle);
2384 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2386 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2387 "vep_idx (%u) != vep_idx (%u)!",
2388 getpid (), session_handle,
2389 session->vep.vep_sh, vep_handle);
2394 vep_session->wait_cont_idx =
2395 (vep_session->wait_cont_idx == session_handle) ?
2396 session->vep.next_sh : vep_session->wait_cont_idx;
2398 if (session->vep.prev_sh == vep_handle)
2399 vep_session->vep.next_sh = session->vep.next_sh;
2402 vcl_session_t *prev_session;
2403 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2404 if (PREDICT_FALSE (!prev_session))
2406 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2407 "vep.prev_sid (%u) on sid (%u)!",
2408 getpid (), session->vep.prev_sh, session_handle);
2409 return VPPCOM_EBADFD;
2411 ASSERT (prev_session->vep.next_sh == session_handle);
2412 prev_session->vep.next_sh = session->vep.next_sh;
2414 if (session->vep.next_sh != ~0)
2416 vcl_session_t *next_session;
2417 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2418 if (PREDICT_FALSE (!next_session))
2420 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2421 "vep.next_sid (%u) on sid (%u)!",
2422 getpid (), session->vep.next_sh, session_handle);
2423 return VPPCOM_EBADFD;
2425 ASSERT (next_session->vep.prev_sh == session_handle);
2426 next_session->vep.prev_sh = session->vep.prev_sh;
2429 memset (&session->vep, 0, sizeof (session->vep));
2430 session->vep.next_sh = ~0;
2431 session->vep.prev_sh = ~0;
2432 session->vep.vep_sh = ~0;
2433 session->is_vep_session = 0;
2434 VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!",
2435 getpid (), vep_handle, session_handle);
2436 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2440 clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op);
2444 vep_verify_epoll_chain (wrk, vep_handle);
2451 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2452 struct epoll_event *events, u32 * num_ev)
2454 session_disconnected_msg_t *disconnected_msg;
2455 session_connected_msg_t *connected_msg;
2456 session_accepted_msg_t *accepted_msg;
2457 u64 session_evt_data = ~0, handle;
2458 u32 sid = ~0, session_events;
2459 vcl_session_msg_t *vcl_msg;
2460 vcl_session_t *session;
2463 switch (e->event_type)
2465 case FIFO_EVENT_APP_RX:
2466 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2467 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2468 sid = e->fifo->client_session_index;
2469 session = vcl_session_get (wrk, sid);
2470 session_events = session->vep.ev.events;
2471 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2474 events[*num_ev].events |= EPOLLIN;
2475 session_evt_data = session->vep.ev.data.u64;
2476 session->has_rx_evt = 1;
2478 case FIFO_EVENT_APP_TX:
2479 sid = e->fifo->client_session_index;
2480 session = vcl_session_get (wrk, sid);
2481 session_events = session->vep.ev.events;
2482 if (!(EPOLLOUT & session_events))
2485 events[*num_ev].events |= EPOLLOUT;
2486 session_evt_data = session->vep.ev.data.u64;
2488 case SESSION_IO_EVT_CT_TX:
2489 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2490 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2491 sid = session->session_index;
2492 session_events = session->vep.ev.events;
2493 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2496 events[*num_ev].events |= EPOLLIN;
2497 session_evt_data = session->vep.ev.data.u64;
2498 session->has_rx_evt = 1;
2500 case SESSION_IO_EVT_CT_RX:
2501 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2502 sid = session->session_index;
2503 session_events = session->vep.ev.events;
2504 if (!(EPOLLOUT & session_events))
2507 events[*num_ev].events |= EPOLLOUT;
2508 session_evt_data = session->vep.ev.data.u64;
2510 case SESSION_CTRL_EVT_ACCEPTED:
2511 accepted_msg = (session_accepted_msg_t *) e->data;
2512 handle = accepted_msg->listener_handle;
2513 session = vcl_session_table_lookup_listener (wrk, handle);
2516 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
2517 "listener handle %llx", getpid (), handle);
2521 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
2522 vcl_msg->accepted_msg = *accepted_msg;
2523 session_events = session->vep.ev.events;
2524 if (!(EPOLLIN & session_events))
2528 events[*num_ev].events |= EPOLLIN;
2529 session_evt_data = session->vep.ev.data.u64;
2531 case SESSION_CTRL_EVT_CONNECTED:
2532 connected_msg = (session_connected_msg_t *) e->data;
2533 vcl_session_connected_handler (wrk, connected_msg);
2534 /* Generate EPOLLOUT because there's no connected event */
2535 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2536 session = vcl_session_get (wrk, sid);
2537 session_events = session->vep.ev.events;
2538 if (EPOLLOUT & session_events)
2541 events[*num_ev].events |= EPOLLOUT;
2542 session_evt_data = session->vep.ev.data.u64;
2545 case SESSION_CTRL_EVT_DISCONNECTED:
2546 disconnected_msg = (session_disconnected_msg_t *) e->data;
2547 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
2548 if (!(session = vcl_session_get (wrk, sid)))
2551 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2552 session_evt_data = session->vep.ev.data.u64;
2553 session_events = session->vep.ev.events;
2555 case SESSION_CTRL_EVT_RESET:
2556 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2557 if (!(session = vcl_session_get (wrk, sid)))
2560 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2561 session_evt_data = session->vep.ev.data.u64;
2562 session_events = session->vep.ev.events;
2565 VDBG (0, "unhandled: %u", e->event_type);
2571 events[*num_ev].data.u64 = session_evt_data;
2572 if (EPOLLONESHOT & session_events)
2574 session = vcl_session_get (wrk, sid);
2575 session->vep.ev.events = 0;
2582 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2583 struct epoll_event *events, u32 maxevents,
2584 double wait_for_time, u32 * num_ev)
2586 svm_msg_q_msg_t *msg;
2590 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2591 goto handle_dequeued;
2593 svm_msg_q_lock (mq);
2594 if (svm_msg_q_is_empty (mq))
2598 svm_msg_q_unlock (mq);
2601 else if (wait_for_time < 0)
2603 svm_msg_q_wait (mq);
2607 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2609 svm_msg_q_unlock (mq);
2614 vcl_mq_dequeue_batch (wrk, mq);
2615 svm_msg_q_unlock (mq);
2618 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2620 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2621 e = svm_msg_q_msg_data (mq, msg);
2622 if (*num_ev < maxevents)
2623 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2625 vec_add1 (wrk->unhandled_evts_vector, *e);
2626 svm_msg_q_free_msg (mq, msg);
2628 vec_reset_length (wrk->mq_msg_vector);
2634 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2635 int maxevents, u32 n_evts, double wait_for_time)
2637 vcl_cut_through_registration_t *cr;
2638 double total_wait = 0, wait_slice;
2641 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2642 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2646 vcl_ct_registration_lock (wrk);
2648 pool_foreach (cr, wrk->cut_through_registrations, ({
2649 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2652 vcl_ct_registration_unlock (wrk);
2654 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2655 maxevents, n_evts ? 0 : wait_slice,
2658 total_wait += wait_slice;
2662 while (total_wait < wait_for_time);
2667 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2668 int maxevents, u32 n_evts, double wait_for_time)
2670 vcl_mq_evt_conn_t *mqc;
2671 int __clib_unused n_read;
2675 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2677 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2678 vec_len (wrk->mq_events), wait_for_time);
2679 for (i = 0; i < n_mq_evts; i++)
2681 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2682 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2683 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2685 if (!n_evts && n_mq_evts > 0)
2688 return (int) n_evts;
2692 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2693 int maxevents, double wait_for_time)
2695 vcl_worker_t *wrk = vcl_worker_get_current ();
2696 vcl_session_t *vep_session;
2700 if (PREDICT_FALSE (maxevents <= 0))
2702 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2703 getpid (), maxevents);
2704 return VPPCOM_EINVAL;
2707 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2709 return VPPCOM_EBADFD;
2711 if (PREDICT_FALSE (!vep_session->is_vep))
2713 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2714 getpid (), vep_handle);
2715 return VPPCOM_EINVAL;
2718 memset (events, 0, sizeof (*events) * maxevents);
2720 if (vec_len (wrk->unhandled_evts_vector))
2722 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2724 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2726 if (n_evts == maxevents)
2733 vec_delete (wrk->unhandled_evts_vector, i, 0);
2736 if (vcm->cfg.use_mq_eventfd)
2737 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2740 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2745 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2746 void *buffer, uint32_t * buflen)
2748 vcl_worker_t *wrk = vcl_worker_get_current ();
2749 vcl_session_t *session;
2751 u32 *flags = buffer;
2752 vppcom_endpt_t *ep = buffer;
2754 session = vcl_session_get_w_handle (wrk, session_handle);
2756 return VPPCOM_EBADFD;
2760 case VPPCOM_ATTR_GET_NREAD:
2761 rv = vppcom_session_read_ready (session);
2762 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2766 case VPPCOM_ATTR_GET_NWRITE:
2767 rv = vppcom_session_write_ready (session);
2768 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2769 getpid (), session_handle, rv);
2772 case VPPCOM_ATTR_GET_FLAGS:
2773 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2775 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2776 VCL_SESS_ATTR_NONBLOCK));
2777 *buflen = sizeof (*flags);
2778 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2779 "is_nonblocking = %u", getpid (),
2780 session_handle, *flags,
2781 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2787 case VPPCOM_ATTR_SET_FLAGS:
2788 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2790 if (*flags & O_NONBLOCK)
2791 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2793 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2795 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2796 " is_nonblocking = %u",
2797 getpid (), session_handle, *flags,
2798 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2804 case VPPCOM_ATTR_GET_PEER_ADDR:
2805 if (PREDICT_TRUE (buffer && buflen &&
2806 (*buflen >= sizeof (*ep)) && ep->ip))
2808 ep->is_ip4 = session->transport.is_ip4;
2809 ep->port = session->transport.rmt_port;
2810 if (session->transport.is_ip4)
2811 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2812 sizeof (ip4_address_t));
2814 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2815 sizeof (ip6_address_t));
2816 *buflen = sizeof (*ep);
2817 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2818 "addr = %U, port %u", getpid (),
2819 session_handle, ep->is_ip4, format_ip46_address,
2820 &session->transport.rmt_ip,
2821 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2822 clib_net_to_host_u16 (ep->port));
2828 case VPPCOM_ATTR_GET_LCL_ADDR:
2829 if (PREDICT_TRUE (buffer && buflen &&
2830 (*buflen >= sizeof (*ep)) && ep->ip))
2832 ep->is_ip4 = session->transport.is_ip4;
2833 ep->port = session->transport.lcl_port;
2834 if (session->transport.is_ip4)
2835 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
2836 sizeof (ip4_address_t));
2838 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
2839 sizeof (ip6_address_t));
2840 *buflen = sizeof (*ep);
2841 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2842 " addr = %U port %d", getpid (),
2843 session_handle, ep->is_ip4, format_ip46_address,
2844 &session->transport.lcl_ip,
2845 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2846 clib_net_to_host_u16 (ep->port));
2852 case VPPCOM_ATTR_GET_LIBC_EPFD:
2853 rv = session->libc_epfd;
2854 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2858 case VPPCOM_ATTR_SET_LIBC_EPFD:
2859 if (PREDICT_TRUE (buffer && buflen &&
2860 (*buflen == sizeof (session->libc_epfd))))
2862 session->libc_epfd = *(int *) buffer;
2863 *buflen = sizeof (session->libc_epfd);
2865 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2866 "buflen %d", getpid (), session->libc_epfd, *buflen);
2872 case VPPCOM_ATTR_GET_PROTOCOL:
2873 if (buffer && buflen && (*buflen >= sizeof (int)))
2875 *(int *) buffer = session->session_type;
2876 *buflen = sizeof (int);
2878 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2879 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
2886 case VPPCOM_ATTR_GET_LISTEN:
2887 if (buffer && buflen && (*buflen >= sizeof (int)))
2889 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2890 VCL_SESS_ATTR_LISTEN);
2891 *buflen = sizeof (int);
2893 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
2894 getpid (), *(int *) buffer, *buflen);
2900 case VPPCOM_ATTR_GET_ERROR:
2901 if (buffer && buflen && (*buflen >= sizeof (int)))
2903 *(int *) buffer = 0;
2904 *buflen = sizeof (int);
2906 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
2907 getpid (), *(int *) buffer, *buflen);
2913 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
2914 if (buffer && buflen && (*buflen >= sizeof (u32)))
2918 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
2919 session->tx_fifo ? session->tx_fifo->nitems :
2920 vcm->cfg.tx_fifo_size);
2921 *buflen = sizeof (u32);
2923 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
2924 "buflen %d, #VPP-TBD#", getpid (),
2925 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2931 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
2932 if (buffer && buflen && (*buflen == sizeof (u32)))
2935 session->sndbuf_size = *(u32 *) buffer;
2936 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
2937 "buflen %d, #VPP-TBD#", getpid (),
2938 session->sndbuf_size, session->sndbuf_size, *buflen);
2944 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
2945 if (buffer && buflen && (*buflen >= sizeof (u32)))
2949 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
2950 session->rx_fifo ? session->rx_fifo->nitems :
2951 vcm->cfg.rx_fifo_size);
2952 *buflen = sizeof (u32);
2954 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
2955 "buflen %d, #VPP-TBD#", getpid (),
2956 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2962 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
2963 if (buffer && buflen && (*buflen == sizeof (u32)))
2966 session->rcvbuf_size = *(u32 *) buffer;
2967 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
2968 "buflen %d, #VPP-TBD#", getpid (),
2969 session->sndbuf_size, session->sndbuf_size, *buflen);
2975 case VPPCOM_ATTR_GET_REUSEADDR:
2976 if (buffer && buflen && (*buflen >= sizeof (int)))
2979 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2980 VCL_SESS_ATTR_REUSEADDR);
2981 *buflen = sizeof (int);
2983 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
2984 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2990 case VPPCOM_ATTR_SET_REUSEADDR:
2991 if (buffer && buflen && (*buflen == sizeof (int)) &&
2992 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
2995 if (*(int *) buffer)
2996 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
2998 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
3000 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
3001 " #VPP-TBD#", getpid (),
3002 VCL_SESS_ATTR_TEST (session->attr,
3003 VCL_SESS_ATTR_REUSEADDR), *buflen);
3009 case VPPCOM_ATTR_GET_REUSEPORT:
3010 if (buffer && buflen && (*buflen >= sizeof (int)))
3013 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3014 VCL_SESS_ATTR_REUSEPORT);
3015 *buflen = sizeof (int);
3017 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
3018 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3024 case VPPCOM_ATTR_SET_REUSEPORT:
3025 if (buffer && buflen && (*buflen == sizeof (int)) &&
3026 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3029 if (*(int *) buffer)
3030 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
3032 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
3034 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
3035 " #VPP-TBD#", getpid (),
3036 VCL_SESS_ATTR_TEST (session->attr,
3037 VCL_SESS_ATTR_REUSEPORT), *buflen);
3043 case VPPCOM_ATTR_GET_BROADCAST:
3044 if (buffer && buflen && (*buflen >= sizeof (int)))
3047 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3048 VCL_SESS_ATTR_BROADCAST);
3049 *buflen = sizeof (int);
3051 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
3052 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3058 case VPPCOM_ATTR_SET_BROADCAST:
3059 if (buffer && buflen && (*buflen == sizeof (int)))
3062 if (*(int *) buffer)
3063 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
3065 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
3067 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
3068 "#VPP-TBD#", getpid (),
3069 VCL_SESS_ATTR_TEST (session->attr,
3070 VCL_SESS_ATTR_BROADCAST), *buflen);
3076 case VPPCOM_ATTR_GET_V6ONLY:
3077 if (buffer && buflen && (*buflen >= sizeof (int)))
3080 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3081 VCL_SESS_ATTR_V6ONLY);
3082 *buflen = sizeof (int);
3084 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
3085 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3091 case VPPCOM_ATTR_SET_V6ONLY:
3092 if (buffer && buflen && (*buflen == sizeof (int)))
3095 if (*(int *) buffer)
3096 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3098 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3100 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
3101 "#VPP-TBD#", getpid (),
3102 VCL_SESS_ATTR_TEST (session->attr,
3103 VCL_SESS_ATTR_V6ONLY), *buflen);
3109 case VPPCOM_ATTR_GET_KEEPALIVE:
3110 if (buffer && buflen && (*buflen >= sizeof (int)))
3113 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3114 VCL_SESS_ATTR_KEEPALIVE);
3115 *buflen = sizeof (int);
3117 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3118 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3124 case VPPCOM_ATTR_SET_KEEPALIVE:
3125 if (buffer && buflen && (*buflen == sizeof (int)))
3128 if (*(int *) buffer)
3129 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3131 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3133 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3134 "#VPP-TBD#", getpid (),
3135 VCL_SESS_ATTR_TEST (session->attr,
3136 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3142 case VPPCOM_ATTR_GET_TCP_NODELAY:
3143 if (buffer && buflen && (*buflen >= sizeof (int)))
3146 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3147 VCL_SESS_ATTR_TCP_NODELAY);
3148 *buflen = sizeof (int);
3150 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3151 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3157 case VPPCOM_ATTR_SET_TCP_NODELAY:
3158 if (buffer && buflen && (*buflen == sizeof (int)))
3161 if (*(int *) buffer)
3162 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3164 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3166 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3167 "#VPP-TBD#", getpid (),
3168 VCL_SESS_ATTR_TEST (session->attr,
3169 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3175 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3176 if (buffer && buflen && (*buflen >= sizeof (int)))
3179 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3180 VCL_SESS_ATTR_TCP_KEEPIDLE);
3181 *buflen = sizeof (int);
3183 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3184 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3190 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3191 if (buffer && buflen && (*buflen == sizeof (int)))
3194 if (*(int *) buffer)
3195 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3197 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3199 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3200 "#VPP-TBD#", getpid (),
3201 VCL_SESS_ATTR_TEST (session->attr,
3202 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3208 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3209 if (buffer && buflen && (*buflen >= sizeof (int)))
3212 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3213 VCL_SESS_ATTR_TCP_KEEPINTVL);
3214 *buflen = sizeof (int);
3216 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3217 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3223 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3224 if (buffer && buflen && (*buflen == sizeof (int)))
3227 if (*(int *) buffer)
3228 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3230 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3232 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3233 "#VPP-TBD#", getpid (),
3234 VCL_SESS_ATTR_TEST (session->attr,
3235 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3241 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3242 if (buffer && buflen && (*buflen >= sizeof (u32)))
3245 *(u32 *) buffer = session->user_mss;
3246 *buflen = sizeof (int);
3248 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3249 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3255 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3256 if (buffer && buflen && (*buflen == sizeof (u32)))
3259 session->user_mss = *(u32 *) buffer;
3261 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3262 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3268 case VPPCOM_ATTR_GET_REFCNT:
3269 rv = vcl_session_get_refcnt (session);
3281 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3282 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3284 vcl_worker_t *wrk = vcl_worker_get_current ();
3286 vcl_session_t *session = 0;
3290 session = vcl_session_get_w_handle (wrk, session_handle);
3291 if (PREDICT_FALSE (!session))
3293 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3294 getpid (), session_handle);
3295 return VPPCOM_EBADFD;
3297 ep->is_ip4 = session->transport.is_ip4;
3298 ep->port = session->transport.rmt_port;
3302 rv = vppcom_session_read (session_handle, buffer, buflen);
3303 else if (flags & MSG_PEEK)
3304 rv = vppcom_session_peek (session_handle, buffer, buflen);
3307 clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d",
3309 return VPPCOM_EAFNOSUPPORT;
3314 if (session->transport.is_ip4)
3315 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3316 sizeof (ip4_address_t));
3318 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3319 sizeof (ip6_address_t));
3326 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3327 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3330 return VPPCOM_EINVAL;
3335 return VPPCOM_EINVAL;
3340 // TBD check the flags and do the right thing
3341 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3342 getpid (), flags, flags);
3345 return (vppcom_session_write (session_handle, buffer, buflen));
3349 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3351 vcl_worker_t *wrk = vcl_worker_get_current ();
3352 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3353 u32 i, keep_trying = 1;
3354 svm_msg_q_msg_t msg;
3358 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3359 getpid (), vp, n_sids, wait_for_time);
3362 return VPPCOM_EFAULT;
3366 vcl_session_t *session;
3368 /* Dequeue all events and drop all unhandled io events */
3369 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3371 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3372 vcl_handle_mq_event (wrk, e);
3373 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3375 vec_reset_length (wrk->unhandled_evts_vector);
3377 for (i = 0; i < n_sids; i++)
3379 session = vcl_session_get (wrk, vp[i].sid);
3382 vp[i].revents = POLLHUP;
3389 if (POLLIN & vp[i].events)
3391 rv = vppcom_session_read_ready (session);
3394 vp[i].revents |= POLLIN;
3401 case VPPCOM_ECONNRESET:
3402 vp[i].revents = POLLHUP;
3406 vp[i].revents = POLLERR;
3413 if (POLLOUT & vp[i].events)
3415 rv = vppcom_session_write_ready (session);
3418 vp[i].revents |= POLLOUT;
3425 case VPPCOM_ECONNRESET:
3426 vp[i].revents = POLLHUP;
3430 vp[i].revents = POLLERR;
3437 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3439 vp[i].revents = POLLNVAL;
3443 if (wait_for_time != -1)
3444 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3446 while ((num_ev == 0) && keep_trying);
3448 if (VPPCOM_DEBUG > 3)
3450 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3451 for (i = 0; i < n_sids; i++)
3453 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3454 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3455 vp[i].events, vp[i].revents);
3462 vppcom_mq_epoll_fd (void)
3464 vcl_worker_t *wrk = vcl_worker_get_current ();
3465 return wrk->mqs_epfd;
3469 vppcom_session_index (uint32_t session_handle)
3471 return session_handle & 0xFFFFFF;
3475 vppcom_session_handle (uint32_t session_index)
3477 return (vcl_get_worker_index () << 24) | session_index;
3481 vppcom_worker_register (void)
3483 if (!vcl_worker_alloc_and_init ())
3484 return VPPCOM_EEXIST;
3486 if (vcl_worker_set_bapi ())
3487 return VPPCOM_EEXIST;
3489 if (vcl_worker_register_with_vpp ())
3490 return VPPCOM_EEXIST;
3496 vppcom_worker_index (void)
3498 return vcl_get_worker_index ();
3502 * fd.io coding-style-patch-verification: ON
3505 * eval: (c-set-style "gnu")