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);
743 if (si && si->si_pid != child_wrk->current_pid)
745 VDBG (0, "unexpected child pid %u", si->si_pid);
748 vcl_cleanup_forked_child (wrk, child_wrk);
751 if (old_sa.sa_flags & SA_SIGINFO)
753 void (*fn) (int, siginfo_t *, void *) = old_sa.sa_sigaction;
758 void (*fn) (int) = old_sa.sa_handler;
765 vcl_incercept_sigchld ()
768 clib_memset (&sa, 0, sizeof (sa));
769 sa.sa_sigaction = vcl_intercept_sigchld_handler;
770 sa.sa_flags = SA_SIGINFO;
771 if (sigaction (SIGCHLD, &sa, &old_sa))
773 VERR ("couldn't intercept sigchld");
779 vcl_app_pre_fork (void)
781 vcl_incercept_sigchld ();
785 vcl_app_fork_child_handler (void)
787 int rv, parent_wrk_index;
788 vcl_worker_t *parent_wrk;
791 parent_wrk_index = vcl_get_worker_index ();
792 VDBG (0, "initializing forked child with parent wrk %u", parent_wrk_index);
797 vcl_set_worker_index (~0);
798 if (!vcl_worker_alloc_and_init ())
799 VERR ("couldn't allocate new worker");
802 * Attach to binary api
804 child_name = format (0, "%v-child-%u%c", vcm->app_name, getpid (), 0);
806 vppcom_api_hookup ();
807 vcm->app_state = STATE_APP_START;
808 rv = vppcom_connect_to_vpp ((char *) child_name);
809 vec_free (child_name);
812 VERR ("couldn't connect to VPP!");
817 * Register worker with vpp and share sessions
819 vcl_worker_register_with_vpp ();
820 parent_wrk = vcl_worker_get (parent_wrk_index);
821 vcl_worker_share_sessions (parent_wrk);
822 parent_wrk->forked_child = vcl_get_worker_index ();
824 VDBG (0, "forked child main worker initialized");
829 vcl_app_fork_parent_handler (void)
839 * Notify vpp of the disconnect and mark the worker as free. If we're the
840 * last worker, do a full cleanup otherwise, since we're probably a forked
841 * child, avoid syscalls as much as possible. We might've lost privileges.
844 vppcom_app_exit (void)
846 if (!pool_elts (vcm->workers))
848 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
849 vcl_set_worker_index (~0);
851 if (vec_len (vcm->workers) == 1)
852 vl_client_disconnect_from_vlib ();
854 vl_client_send_disconnect (1 /* vpp should cleanup */ );
858 * VPPCOM Public API functions
861 vppcom_app_create (char *app_name)
863 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
868 VDBG (1, "already initialized");
869 return VPPCOM_EEXIST;
873 vppcom_cfg (&vcm->cfg);
876 vcm->main_cpu = pthread_self ();
877 vcm->main_pid = getpid ();
878 vcm->app_name = format (0, "%s", app_name);
879 vppcom_init_error_string_table ();
880 svm_fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva,
881 20 /* timeout in secs */ );
882 pool_alloc (vcm->workers, vcl_cfg->max_workers);
883 clib_spinlock_init (&vcm->workers_lock);
884 clib_rwlock_init (&vcm->segment_table_lock);
885 pthread_atfork (vcl_app_pre_fork, vcl_app_fork_parent_handler,
886 vcl_app_fork_child_handler);
887 atexit (vppcom_app_exit);
889 /* Allocate default worker */
890 vcl_worker_alloc_and_init ();
892 /* API hookup and connect to VPP */
893 vppcom_api_hookup ();
895 vcm->app_state = STATE_APP_START;
896 rv = vppcom_connect_to_vpp (app_name);
899 VERR ("couldn't connect to VPP!");
902 VDBG (0, "sending session enable");
903 rv = vppcom_app_session_enable ();
906 VERR ("vppcom_app_session_enable() failed!");
910 VDBG (0, "sending app attach");
911 rv = vppcom_app_attach ();
914 VERR ("vppcom_app_attach() failed!");
918 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
919 vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
925 vppcom_app_destroy (void)
928 f64 orig_app_timeout;
930 if (!pool_elts (vcm->workers))
933 vcl_evt (VCL_EVT_DETACH, vcm);
935 if (pool_elts (vcm->workers) == 1)
937 vppcom_app_send_detach ();
938 orig_app_timeout = vcm->cfg.app_timeout;
939 vcm->cfg.app_timeout = 2.0;
940 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
941 vcm->cfg.app_timeout = orig_app_timeout;
942 if (PREDICT_FALSE (rv))
943 VDBG (0, "application detach timed out! returning %d (%s)", rv,
944 vppcom_retval_str (rv));
945 vec_free (vcm->app_name);
946 vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ );
950 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
953 vcl_set_worker_index (~0);
955 vl_client_disconnect_from_vlib ();
959 vppcom_session_create (u8 proto, u8 is_nonblocking)
961 vcl_worker_t *wrk = vcl_worker_get_current ();
962 vcl_session_t *session;
964 session = vcl_session_alloc (wrk);
966 session->session_type = proto;
967 session->session_state = STATE_START;
968 session->vpp_handle = ~0;
969 session->is_dgram = proto == VPPCOM_PROTO_UDP;
972 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
974 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
975 is_nonblocking, session_index);
977 VDBG (0, "created sid %u", session->session_index);
979 return vcl_session_handle (session);
983 vppcom_session_close (uint32_t session_handle)
985 vcl_worker_t *wrk = vcl_worker_get_current ();
986 u8 is_vep, do_disconnect = 1;
987 vcl_session_t *session = 0;
988 session_state_t state;
993 session = vcl_session_get_w_handle (wrk, session_handle);
995 return VPPCOM_EBADFD;
997 if (session->shared_index != ~0)
998 do_disconnect = vcl_worker_unshare_session (wrk, session);
1000 is_vep = session->is_vep;
1001 next_sh = session->vep.next_sh;
1002 vep_sh = session->vep.vep_sh;
1003 state = session->session_state;
1004 vpp_handle = session->vpp_handle;
1006 VDBG (0, "Closing session handle %u vpp handle %u", session_handle,
1011 while (next_sh != ~0)
1013 rv = vppcom_epoll_ctl (session_handle, EPOLL_CTL_DEL, next_sh, 0);
1014 if (PREDICT_FALSE (rv < 0))
1015 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u"
1016 " failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
1017 vppcom_retval_str (rv));
1019 next_sh = session->vep.next_sh;
1024 if (session->is_vep_session)
1026 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, session_handle, 0);
1028 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u "
1029 "failed! rv %d (%s)", vpp_handle, session_handle, vep_sh,
1030 rv, vppcom_retval_str (rv));
1036 if (state & STATE_LISTEN)
1038 rv = vppcom_session_unbind (session_handle);
1039 if (PREDICT_FALSE (rv < 0))
1040 VDBG (0, "vpp handle 0x%llx, sid %u: listener unbind failed! "
1041 "rv %d (%s)", vpp_handle, session_handle, rv,
1042 vppcom_retval_str (rv));
1044 else if (state & STATE_OPEN)
1046 rv = vppcom_session_disconnect (session_handle);
1047 if (PREDICT_FALSE (rv < 0))
1048 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1049 "session disconnect failed! rv %d (%s)",
1050 getpid (), vpp_handle, session_handle,
1051 rv, vppcom_retval_str (rv));
1057 if (vcl_session_is_ct (session))
1059 vcl_cut_through_registration_t *ctr;
1062 mq_addr = pointer_to_uword (session->our_evt_q);
1063 ctr = vcl_ct_registration_lock_and_lookup (wrk, mq_addr);
1065 if (ctr->epoll_evt_conn_index != ~0)
1066 vcl_mq_epoll_del_evfd (wrk, ctr->epoll_evt_conn_index);
1067 VDBG (0, "Removing ct registration %u",
1068 vcl_ct_registration_index (wrk, ctr));
1069 vcl_ct_registration_del (wrk, ctr);
1070 vcl_ct_registration_lookup_del (wrk, mq_addr);
1071 vcl_ct_registration_unlock (wrk);
1074 if (vpp_handle != ~0)
1076 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
1078 vcl_session_free (wrk, session);
1080 VDBG (0, "session handle %u vpp handle %u removed", session_handle,
1083 vcl_evt (VCL_EVT_CLOSE, session, rv);
1089 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1091 vcl_worker_t *wrk = vcl_worker_get_current ();
1092 vcl_session_t *session = 0;
1095 return VPPCOM_EINVAL;
1097 session = vcl_session_get_w_handle (wrk, session_handle);
1099 return VPPCOM_EBADFD;
1101 if (session->is_vep)
1103 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1104 "bind to an epoll session!", getpid (), session_handle);
1105 return VPPCOM_EBADFD;
1108 session->transport.is_ip4 = ep->is_ip4;
1110 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1111 sizeof (ip4_address_t));
1113 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1114 sizeof (ip6_address_t));
1115 session->transport.lcl_port = ep->port;
1117 VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
1118 "proto %s", getpid (), session_handle,
1119 session->transport.is_ip4 ? "IPv4" : "IPv6",
1120 format_ip46_address, &session->transport.lcl_ip,
1121 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1122 clib_net_to_host_u16 (session->transport.lcl_port),
1123 session->session_type ? "UDP" : "TCP");
1124 vcl_evt (VCL_EVT_BIND, session);
1126 if (session->session_type == VPPCOM_PROTO_UDP)
1127 vppcom_session_listen (session_handle, 10);
1133 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1135 vcl_worker_t *wrk = vcl_worker_get_current ();
1136 vcl_session_t *listen_session = 0;
1137 u64 listen_vpp_handle;
1140 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1141 if (!listen_session)
1142 return VPPCOM_EBADFD;
1144 if (q_len == 0 || q_len == ~0)
1145 q_len = vcm->cfg.listen_queue_size;
1147 if (listen_session->is_vep)
1149 clib_warning ("VCL<%d>: ERROR: sid %u: cannot listen on an "
1150 "epoll session!", getpid (), listen_sh);
1151 return VPPCOM_EBADFD;
1154 listen_vpp_handle = listen_session->vpp_handle;
1155 if (listen_session->session_state & STATE_LISTEN)
1157 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: already in listen state!",
1158 getpid (), listen_vpp_handle, listen_sh);
1162 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: sending VPP bind+listen "
1163 "request...", getpid (), listen_vpp_handle, listen_sh);
1166 * Send listen request to vpp and wait for reply
1168 vppcom_send_bind_sock (listen_session);
1169 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1171 vcm->cfg.session_timeout);
1173 if (PREDICT_FALSE (rv))
1175 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1176 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: bind+listen failed! "
1177 "returning %d (%s)", getpid (), listen_session->vpp_handle,
1178 listen_sh, rv, vppcom_retval_str (rv));
1186 validate_args_session_accept_ (vcl_worker_t * wrk,
1187 vcl_session_t * listen_session)
1189 /* Input validation - expects spinlock on sessions_lockp */
1190 if (listen_session->is_vep)
1192 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1193 "epoll session!", getpid (),
1194 listen_session->session_index);
1195 return VPPCOM_EBADFD;
1198 if (listen_session->session_state != STATE_LISTEN)
1200 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1201 "not in listen state! state 0x%x (%s)", getpid (),
1202 listen_session->vpp_handle, listen_session->session_index,
1203 listen_session->session_state,
1204 vppcom_session_state_str (listen_session->session_state));
1205 return VPPCOM_EBADFD;
1211 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1214 u32 client_session_index = ~0, listen_session_index;
1215 vcl_worker_t *wrk = vcl_worker_get_current ();
1216 session_accepted_msg_t accepted_msg;
1217 vcl_session_t *listen_session = 0;
1218 vcl_session_t *client_session = 0;
1219 svm_msg_q_t *vpp_evt_q;
1220 vcl_session_msg_t *evt;
1221 u64 listen_vpp_handle;
1222 svm_msg_q_msg_t msg;
1227 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1228 if (!listen_session)
1229 return VPPCOM_EBADFD;
1231 listen_session_index = listen_session->session_index;
1232 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1235 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1237 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1238 accepted_msg = evt->accepted_msg;
1242 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1243 VCL_SESS_ATTR_NONBLOCK);
1244 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1245 return VPPCOM_EAGAIN;
1249 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1250 return VPPCOM_EAGAIN;
1252 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1253 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1255 clib_warning ("discarded event: %u", e->event_type);
1256 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1259 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1260 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1266 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1267 listen_session = vcl_session_get (wrk, listen_session_index);
1268 client_session = vcl_session_get (wrk, client_session_index);
1270 if (flags & O_NONBLOCK)
1271 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1273 listen_vpp_handle = listen_session->vpp_handle;
1274 VDBG (0, "vpp handle 0x%llx, sid %u: Got a client request! "
1275 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1276 listen_vpp_handle, listen_session_handle,
1277 client_session->vpp_handle, client_session_index,
1278 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1279 VCL_SESS_ATTR_NONBLOCK));
1283 ep->is_ip4 = client_session->transport.is_ip4;
1284 ep->port = client_session->transport.rmt_port;
1285 if (client_session->transport.is_ip4)
1286 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1287 sizeof (ip4_address_t));
1289 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1290 sizeof (ip6_address_t));
1293 if (accepted_msg.server_event_queue_address)
1294 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1297 vpp_evt_q = client_session->vpp_evt_q;
1299 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1300 client_session->vpp_handle, 0);
1302 VDBG (0, "vpp handle 0x%llx, sid %u: accepted vpp handle 0x%llx, "
1303 "sid %u connection from peer %s address %U port %u to local %s "
1304 "address %U port %u", listen_vpp_handle,
1305 listen_session_handle, client_session->vpp_handle,
1306 client_session_index,
1307 client_session->transport.is_ip4 ? "IPv4" : "IPv6",
1308 format_ip46_address, &client_session->transport.rmt_ip,
1309 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1310 clib_net_to_host_u16 (client_session->transport.rmt_port),
1311 client_session->transport.is_ip4 ? "IPv4" : "IPv6",
1312 format_ip46_address, &client_session->transport.lcl_ip,
1313 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1314 clib_net_to_host_u16 (client_session->transport.lcl_port));
1315 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1316 client_session_index);
1318 return vcl_session_handle (client_session);
1322 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1324 vcl_worker_t *wrk = vcl_worker_get_current ();
1325 vcl_session_t *session = 0;
1329 session = vcl_session_get_w_handle (wrk, session_handle);
1331 return VPPCOM_EBADFD;
1332 session_index = session->session_index;
1334 if (PREDICT_FALSE (session->is_vep))
1336 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1337 "connect on an epoll session!", getpid (),
1339 return VPPCOM_EBADFD;
1342 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1344 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
1345 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1346 getpid (), session->vpp_handle, session_handle,
1347 session->transport.is_ip4 ? "IPv4" : "IPv6",
1348 format_ip46_address,
1349 &session->transport.rmt_ip, session->transport.is_ip4 ?
1350 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1351 clib_net_to_host_u16 (session->transport.rmt_port),
1352 session->session_type ? "UDP" : "TCP", session->session_state,
1353 vppcom_session_state_str (session->session_state));
1357 session->transport.is_ip4 = server_ep->is_ip4;
1358 if (session->transport.is_ip4)
1359 clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
1360 sizeof (ip4_address_t));
1362 clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
1363 sizeof (ip6_address_t));
1364 session->transport.rmt_port = server_ep->port;
1366 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
1368 getpid (), session->vpp_handle, session_handle,
1369 session->transport.is_ip4 ? "IPv4" : "IPv6",
1370 format_ip46_address,
1371 &session->transport.rmt_ip, session->transport.is_ip4 ?
1372 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1373 clib_net_to_host_u16 (session->transport.rmt_port),
1374 session->session_type ? "UDP" : "TCP");
1377 * Send connect request and wait for reply from vpp
1379 vppcom_send_connect_sock (session);
1380 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1381 vcm->cfg.session_timeout);
1383 session = vcl_session_get (wrk, session_index);
1385 if (PREDICT_FALSE (rv))
1387 if (VPPCOM_DEBUG > 0)
1390 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1391 "failed! returning %d (%s)", getpid (),
1392 session->vpp_handle, session_handle, rv,
1393 vppcom_retval_str (rv));
1395 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1396 "returning %d (%s)", getpid (),
1397 session_handle, rv, vppcom_retval_str (rv));
1401 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1402 getpid (), session->vpp_handle, session_handle);
1408 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1411 return (e->event_type == FIFO_EVENT_APP_RX
1412 && e->fifo->client_session_index == sid);
1414 return (e->event_type == SESSION_IO_EVT_CT_TX);
1418 vcl_session_is_readable (vcl_session_t * s)
1420 return ((s->session_state & STATE_OPEN)
1421 || (s->session_state == STATE_LISTEN
1422 && s->session_type == VPPCOM_PROTO_UDP));
1426 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1429 vcl_worker_t *wrk = vcl_worker_get_current ();
1430 int n_read = 0, rv, is_nonblocking;
1431 vcl_session_t *s = 0;
1432 svm_fifo_t *rx_fifo;
1433 svm_msg_q_msg_t msg;
1438 if (PREDICT_FALSE (!buf))
1439 return VPPCOM_EINVAL;
1441 s = vcl_session_get_w_handle (wrk, session_handle);
1442 if (PREDICT_FALSE (!s || s->is_vep))
1443 return VPPCOM_EBADFD;
1445 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1447 session_state_t state = s->session_state;
1448 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1450 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! "
1451 "state 0x%x (%s), returning %d (%s)",
1452 getpid (), s->vpp_handle, session_handle, state,
1453 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1457 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1458 is_ct = vcl_session_is_ct (s);
1459 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1460 rx_fifo = s->rx_fifo;
1463 if (svm_fifo_is_empty (rx_fifo))
1467 svm_fifo_unset_event (rx_fifo);
1468 return VPPCOM_EWOULDBLOCK;
1470 while (svm_fifo_is_empty (rx_fifo))
1472 svm_fifo_unset_event (rx_fifo);
1473 svm_msg_q_lock (mq);
1474 if (svm_msg_q_is_empty (mq))
1475 svm_msg_q_wait (mq);
1477 svm_msg_q_sub_w_lock (mq, &msg);
1478 e = svm_msg_q_msg_data (mq, &msg);
1479 svm_msg_q_unlock (mq);
1480 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1482 vcl_handle_mq_event (wrk, e);
1483 svm_msg_q_free_msg (mq, &msg);
1486 svm_msg_q_free_msg (mq, &msg);
1488 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1494 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1496 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1498 if (svm_fifo_is_empty (rx_fifo))
1499 svm_fifo_unset_event (rx_fifo);
1501 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1503 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1504 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1508 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1509 getpid (), s->vpp_handle, session_handle, n_read, rx_fifo);
1515 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1517 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1521 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1523 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1527 vppcom_session_read_segments (uint32_t session_handle,
1528 vppcom_data_segments_t ds)
1530 vcl_worker_t *wrk = vcl_worker_get_current ();
1531 int n_read = 0, rv, is_nonblocking;
1532 vcl_session_t *s = 0;
1533 svm_fifo_t *rx_fifo;
1534 svm_msg_q_msg_t msg;
1539 s = vcl_session_get_w_handle (wrk, session_handle);
1540 if (PREDICT_FALSE (!s || s->is_vep))
1541 return VPPCOM_EBADFD;
1543 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1545 session_state_t state = s->session_state;
1546 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1550 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1551 is_ct = vcl_session_is_ct (s);
1552 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1553 rx_fifo = s->rx_fifo;
1556 if (svm_fifo_is_empty (rx_fifo))
1560 svm_fifo_unset_event (rx_fifo);
1561 return VPPCOM_EWOULDBLOCK;
1563 while (svm_fifo_is_empty (rx_fifo))
1565 svm_fifo_unset_event (rx_fifo);
1566 svm_msg_q_lock (mq);
1567 if (svm_msg_q_is_empty (mq))
1568 svm_msg_q_wait (mq);
1570 svm_msg_q_sub_w_lock (mq, &msg);
1571 e = svm_msg_q_msg_data (mq, &msg);
1572 svm_msg_q_unlock (mq);
1573 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1575 vcl_handle_mq_event (wrk, e);
1576 svm_msg_q_free_msg (mq, &msg);
1579 svm_msg_q_free_msg (mq, &msg);
1581 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1586 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1587 svm_fifo_unset_event (rx_fifo);
1589 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1591 /* If the peer is not polling send notification */
1592 if (!svm_fifo_has_event (s->rx_fifo))
1593 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1594 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1601 vppcom_session_free_segments (uint32_t session_handle,
1602 vppcom_data_segments_t ds)
1604 vcl_worker_t *wrk = vcl_worker_get_current ();
1607 s = vcl_session_get_w_handle (wrk, session_handle);
1608 if (PREDICT_FALSE (!s || s->is_vep))
1611 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1615 vppcom_session_read_ready (vcl_session_t * session)
1617 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1618 if (PREDICT_FALSE (session->is_vep))
1620 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1621 "epoll session!", getpid (), session->session_index);
1622 return VPPCOM_EBADFD;
1625 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1627 session_state_t state = session->session_state;
1630 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1632 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1633 " state 0x%x (%s), returning %d (%s)", getpid (),
1634 session->vpp_handle, session->session_index, state,
1635 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1639 if (session->session_state & STATE_LISTEN)
1640 return clib_fifo_elts (session->accept_evts_fifo);
1642 return svm_fifo_max_dequeue (session->rx_fifo);
1646 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1648 u32 first_copy = clib_min (ds[0].len, max_bytes);
1649 clib_memcpy_fast (buf, ds[0].data, first_copy);
1650 if (first_copy < max_bytes)
1652 clib_memcpy_fast (buf + first_copy, ds[1].data,
1653 clib_min (ds[1].len, max_bytes - first_copy));
1659 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1662 return (e->event_type == FIFO_EVENT_APP_TX
1663 && e->fifo->client_session_index == sid);
1665 return (e->event_type == SESSION_IO_EVT_CT_RX);
1669 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1671 vcl_worker_t *wrk = vcl_worker_get_current ();
1672 int rv, n_write, is_nonblocking;
1673 vcl_session_t *s = 0;
1674 svm_fifo_t *tx_fifo = 0;
1675 session_evt_type_t et;
1676 svm_msg_q_msg_t msg;
1681 if (PREDICT_FALSE (!buf))
1682 return VPPCOM_EINVAL;
1684 s = vcl_session_get_w_handle (wrk, session_handle);
1685 if (PREDICT_FALSE (!s))
1686 return VPPCOM_EBADFD;
1688 if (PREDICT_FALSE (s->is_vep))
1690 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1691 "cannot write to an epoll session!",
1692 getpid (), s->vpp_handle, session_handle);
1694 return VPPCOM_EBADFD;
1697 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1699 session_state_t state = s->session_state;
1700 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1701 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1702 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1703 state, vppcom_session_state_str (state));
1707 tx_fifo = s->tx_fifo;
1708 is_ct = vcl_session_is_ct (s);
1709 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1710 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1711 if (svm_fifo_is_full (tx_fifo))
1715 return VPPCOM_EWOULDBLOCK;
1717 while (svm_fifo_is_full (tx_fifo))
1719 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1720 svm_msg_q_lock (mq);
1721 if (svm_msg_q_is_empty (mq))
1722 svm_msg_q_wait (mq);
1724 svm_msg_q_sub_w_lock (mq, &msg);
1725 e = svm_msg_q_msg_data (mq, &msg);
1726 svm_msg_q_unlock (mq);
1728 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1729 vcl_handle_mq_event (wrk, e);
1730 svm_msg_q_free_msg (mq, &msg);
1734 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1735 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1737 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1738 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1740 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1743 ASSERT (n_write > 0);
1745 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1746 s->vpp_handle, session_handle, n_write);
1751 static vcl_session_t *
1752 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1755 s = vcl_session_get (wrk, f->client_session_index);
1759 if (type == 0 && s->rx_fifo == f)
1762 if (type == 1 && s->tx_fifo == f)
1765 s = vcl_session_get (wrk, f->master_session_index);
1768 if (type == 0 && s->rx_fifo == f)
1770 if (type == 1 && s->tx_fifo == f)
1777 vppcom_session_write_ready (vcl_session_t * session)
1779 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1780 if (PREDICT_FALSE (session->is_vep))
1782 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1783 "cannot write to an epoll session!",
1784 getpid (), session->vpp_handle, session->session_index);
1785 return VPPCOM_EBADFD;
1788 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1790 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1791 "cannot write to a listen session!",
1792 getpid (), session->vpp_handle, session->session_index);
1793 return VPPCOM_EBADFD;
1796 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1798 session_state_t state = session->session_state;
1801 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1802 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1803 "session is not open! state 0x%x (%s), "
1804 "returning %d (%s)", getpid (), session->vpp_handle,
1805 session->session_index,
1806 state, vppcom_session_state_str (state),
1807 rv, vppcom_retval_str (rv));
1811 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1812 getpid (), session->vpp_handle, session->session_index,
1813 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1815 return svm_fifo_max_enqueue (session->tx_fifo);
1819 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1821 svm_msg_q_msg_t *msg;
1825 n_msgs = svm_msg_q_size (mq);
1826 for (i = 0; i < n_msgs; i++)
1828 vec_add2 (wrk->mq_msg_vector, msg, 1);
1829 svm_msg_q_sub_w_lock (mq, msg);
1834 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1835 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1837 svm_fifo_unset_event (_fifo); \
1838 if (svm_fifo_is_empty (_fifo)) \
1843 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1844 unsigned long n_bits, unsigned long *read_map,
1845 unsigned long *write_map,
1846 unsigned long *except_map, u32 * bits_set)
1848 session_disconnected_msg_t *disconnected_msg;
1849 session_connected_msg_t *connected_msg;
1850 session_accepted_msg_t *accepted_msg;
1851 vcl_session_msg_t *vcl_msg;
1852 vcl_session_t *session;
1856 switch (e->event_type)
1858 case FIFO_EVENT_APP_RX:
1859 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1860 sid = e->fifo->client_session_index;
1861 session = vcl_session_get (wrk, sid);
1864 if (sid < n_bits && read_map)
1866 clib_bitmap_set_no_check (read_map, sid, 1);
1870 case FIFO_EVENT_APP_TX:
1871 sid = e->fifo->client_session_index;
1872 session = vcl_session_get (wrk, sid);
1875 if (sid < n_bits && write_map)
1877 clib_bitmap_set_no_check (write_map, sid, 1);
1881 case SESSION_IO_EVT_CT_TX:
1882 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1883 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
1886 sid = session->session_index;
1887 if (sid < n_bits && read_map)
1889 clib_bitmap_set_no_check (read_map, sid, 1);
1893 case SESSION_IO_EVT_CT_RX:
1894 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
1897 sid = session->session_index;
1898 if (sid < n_bits && write_map)
1900 clib_bitmap_set_no_check (write_map, sid, 1);
1904 case SESSION_CTRL_EVT_ACCEPTED:
1905 accepted_msg = (session_accepted_msg_t *) e->data;
1906 handle = accepted_msg->listener_handle;
1907 session = vcl_session_table_lookup_listener (wrk, handle);
1910 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
1911 "listener handle %llx", getpid (), handle);
1915 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
1916 vcl_msg->accepted_msg = *accepted_msg;
1917 sid = session->session_index;
1918 if (sid < n_bits && read_map)
1920 clib_bitmap_set_no_check (read_map, sid, 1);
1924 case SESSION_CTRL_EVT_CONNECTED:
1925 connected_msg = (session_connected_msg_t *) e->data;
1926 vcl_session_connected_handler (wrk, connected_msg);
1928 case SESSION_CTRL_EVT_DISCONNECTED:
1929 disconnected_msg = (session_disconnected_msg_t *) e->data;
1930 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
1931 if (sid < n_bits && except_map)
1933 clib_bitmap_set_no_check (except_map, sid, 1);
1937 case SESSION_CTRL_EVT_RESET:
1938 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
1939 if (sid < n_bits && except_map)
1941 clib_bitmap_set_no_check (except_map, sid, 1);
1946 clib_warning ("unhandled: %u", e->event_type);
1952 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
1953 unsigned long n_bits, unsigned long *read_map,
1954 unsigned long *write_map, unsigned long *except_map,
1955 double time_to_wait, u32 * bits_set)
1957 svm_msg_q_msg_t *msg;
1961 svm_msg_q_lock (mq);
1962 if (svm_msg_q_is_empty (mq))
1966 svm_msg_q_unlock (mq);
1972 svm_msg_q_unlock (mq);
1975 else if (time_to_wait < 0)
1977 svm_msg_q_wait (mq);
1981 if (svm_msg_q_timedwait (mq, time_to_wait))
1983 svm_msg_q_unlock (mq);
1988 vcl_mq_dequeue_batch (wrk, mq);
1989 svm_msg_q_unlock (mq);
1991 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
1993 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
1994 e = svm_msg_q_msg_data (mq, msg);
1995 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
1996 except_map, bits_set);
1997 svm_msg_q_free_msg (mq, msg);
1999 vec_reset_length (wrk->mq_msg_vector);
2004 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
2005 unsigned long *read_map, unsigned long *write_map,
2006 unsigned long *except_map, double time_to_wait,
2009 double total_wait = 0, wait_slice;
2010 vcl_cut_through_registration_t *cr;
2012 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
2013 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
2016 vcl_ct_registration_lock (wrk);
2018 pool_foreach (cr, wrk->cut_through_registrations, ({
2019 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
2023 vcl_ct_registration_unlock (wrk);
2025 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2026 write_map, except_map, time_to_wait, bits_set);
2027 total_wait += wait_slice;
2031 while (total_wait < time_to_wait);
2037 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
2038 unsigned long *read_map, unsigned long *write_map,
2039 unsigned long *except_map, double time_to_wait,
2042 vcl_mq_evt_conn_t *mqc;
2043 int __clib_unused n_read;
2047 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2048 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2049 vec_len (wrk->mq_events), time_to_wait);
2050 for (i = 0; i < n_mq_evts; i++)
2052 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2053 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2054 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2055 except_map, 0, bits_set);
2058 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2062 vppcom_select (unsigned long n_bits, unsigned long *read_map,
2063 unsigned long *write_map, unsigned long *except_map,
2064 double time_to_wait)
2066 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2067 vcl_worker_t *wrk = vcl_worker_get_current ();
2068 vcl_session_t *session = 0;
2071 ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
2073 if (n_bits && read_map)
2075 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2076 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2077 vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2078 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2080 if (n_bits && write_map)
2082 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2083 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2084 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2085 memset (write_map, 0,
2086 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2088 if (n_bits && except_map)
2090 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2091 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2092 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2093 memset (except_map, 0,
2094 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2104 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2105 if (!(session = vcl_session_get (wrk, sid)))
2107 if (except_map && sid < minbits)
2108 clib_bitmap_set_no_check (except_map, sid, 1);
2112 rv = svm_fifo_is_full (session->tx_fifo);
2115 clib_bitmap_set_no_check (write_map, sid, 1);
2124 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2125 if (!(session = vcl_session_get (wrk, sid)))
2127 if (except_map && sid < minbits)
2128 clib_bitmap_set_no_check (except_map, sid, 1);
2132 rv = vppcom_session_read_ready (session);
2135 clib_bitmap_set_no_check (read_map, sid, 1);
2143 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2145 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2146 read_map, write_map, except_map, &bits_set);
2148 vec_reset_length (wrk->unhandled_evts_vector);
2150 if (vcm->cfg.use_mq_eventfd)
2151 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2152 time_to_wait, &bits_set);
2154 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2155 time_to_wait, &bits_set);
2161 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2163 vcl_session_t *session;
2164 vppcom_epoll_t *vep;
2167 if (VPPCOM_DEBUG <= 1)
2170 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2171 session = vcl_session_get (wrk, vep_idx);
2172 if (PREDICT_FALSE (!session))
2174 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2175 getpid (), vep_idx);
2178 if (PREDICT_FALSE (!session->is_vep))
2180 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2181 getpid (), vep_idx);
2184 vep = &session->vep;
2185 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2188 " is_vep_session = %u\n"
2189 " next_sid = 0x%x (%u)\n"
2190 " wait_cont_idx = 0x%x (%u)\n"
2191 "}\n", getpid (), vep_idx,
2192 session->is_vep, session->is_vep_session,
2193 vep->next_sh, vep->next_sh,
2194 session->wait_cont_idx, session->wait_cont_idx);
2196 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2198 session = vcl_session_get (wrk, sid);
2199 if (PREDICT_FALSE (!session))
2201 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2204 if (PREDICT_FALSE (session->is_vep))
2205 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2206 getpid (), vep_idx);
2207 else if (PREDICT_FALSE (!session->is_vep_session))
2209 clib_warning ("VCL<%d>: ERROR: session (%u) "
2210 "is not a vep session!", getpid (), sid);
2213 vep = &session->vep;
2214 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2215 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2216 "vep_idx (%u)!", getpid (),
2217 sid, session->vep.vep_sh, vep_idx);
2218 if (session->is_vep_session)
2220 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2222 " next_sid = 0x%x (%u)\n"
2223 " prev_sid = 0x%x (%u)\n"
2224 " vep_idx = 0x%x (%u)\n"
2225 " ev.events = 0x%x\n"
2226 " ev.data.u64 = 0x%llx\n"
2230 vep->next_sh, vep->next_sh,
2231 vep->prev_sh, vep->prev_sh,
2232 vep->vep_sh, vep->vep_sh,
2233 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2238 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2239 getpid (), vep_idx);
2243 vppcom_epoll_create (void)
2245 vcl_worker_t *wrk = vcl_worker_get_current ();
2246 vcl_session_t *vep_session;
2248 vep_session = vcl_session_alloc (wrk);
2250 vep_session->is_vep = 1;
2251 vep_session->vep.vep_sh = ~0;
2252 vep_session->vep.next_sh = ~0;
2253 vep_session->vep.prev_sh = ~0;
2254 vep_session->wait_cont_idx = ~0;
2255 vep_session->vpp_handle = ~0;
2257 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_sh);
2258 VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!",
2259 getpid (), vep_session->session_index, vep_session->session_index);
2261 return vcl_session_handle (vep_session);
2265 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2266 struct epoll_event *event)
2268 vcl_worker_t *wrk = vcl_worker_get_current ();
2269 vcl_session_t *vep_session;
2270 vcl_session_t *session;
2273 if (vep_handle == session_handle)
2275 clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!",
2276 getpid (), vep_handle);
2277 return VPPCOM_EINVAL;
2280 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2281 if (PREDICT_FALSE (!vep_session))
2283 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_handle);
2284 return VPPCOM_EBADFD;
2286 if (PREDICT_FALSE (!vep_session->is_vep))
2288 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2289 getpid (), vep_handle);
2290 return VPPCOM_EINVAL;
2293 ASSERT (vep_session->vep.vep_sh == ~0);
2294 ASSERT (vep_session->vep.prev_sh == ~0);
2296 session = vcl_session_get_w_handle (wrk, session_handle);
2297 if (PREDICT_FALSE (!session))
2299 VDBG (0, "VCL<%d>: ERROR: Invalid session_handle (%u)!",
2300 getpid (), session_handle);
2301 return VPPCOM_EBADFD;
2303 if (PREDICT_FALSE (session->is_vep))
2305 clib_warning ("ERROR: session_handle (%u) is a vep!", vep_handle);
2306 return VPPCOM_EINVAL;
2312 if (PREDICT_FALSE (!event))
2314 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to "
2315 "epoll_event structure!", getpid ());
2316 return VPPCOM_EINVAL;
2318 if (vep_session->vep.next_sh != ~0)
2320 vcl_session_t *next_session;
2321 next_session = vcl_session_get_w_handle (wrk,
2322 vep_session->vep.next_sh);
2323 if (PREDICT_FALSE (!next_session))
2325 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid "
2326 "vep.next_sid (%u) on vep_idx (%u)!",
2327 getpid (), vep_session->vep.next_sh, vep_handle);
2328 return VPPCOM_EBADFD;
2330 ASSERT (next_session->vep.prev_sh == vep_handle);
2331 next_session->vep.prev_sh = session_handle;
2333 session->vep.next_sh = vep_session->vep.next_sh;
2334 session->vep.prev_sh = vep_handle;
2335 session->vep.vep_sh = vep_handle;
2336 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2337 session->vep.ev = *event;
2338 session->is_vep = 0;
2339 session->is_vep_session = 1;
2340 vep_session->vep.next_sh = session_handle;
2342 VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x, "
2343 "data 0x%llx!", getpid (), vep_handle, session_handle,
2344 event->events, event->data.u64);
2345 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2349 if (PREDICT_FALSE (!event))
2351 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to "
2352 "epoll_event structure!", getpid ());
2356 else if (PREDICT_FALSE (!session->is_vep_session))
2358 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2359 "not a vep session!", getpid (), session_handle);
2363 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2365 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2366 "vep_idx (%u) != vep_idx (%u)!",
2367 getpid (), session_handle,
2368 session->vep.vep_sh, vep_handle);
2372 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2373 session->vep.ev = *event;
2374 VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
2375 " data 0x%llx!", getpid (), vep_handle, session_handle,
2376 event->events, event->data.u64);
2380 if (PREDICT_FALSE (!session->is_vep_session))
2382 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2383 "not a vep session!", getpid (), session_handle);
2387 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2389 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2390 "vep_idx (%u) != vep_idx (%u)!",
2391 getpid (), session_handle,
2392 session->vep.vep_sh, vep_handle);
2397 vep_session->wait_cont_idx =
2398 (vep_session->wait_cont_idx == session_handle) ?
2399 session->vep.next_sh : vep_session->wait_cont_idx;
2401 if (session->vep.prev_sh == vep_handle)
2402 vep_session->vep.next_sh = session->vep.next_sh;
2405 vcl_session_t *prev_session;
2406 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2407 if (PREDICT_FALSE (!prev_session))
2409 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2410 "vep.prev_sid (%u) on sid (%u)!",
2411 getpid (), session->vep.prev_sh, session_handle);
2412 return VPPCOM_EBADFD;
2414 ASSERT (prev_session->vep.next_sh == session_handle);
2415 prev_session->vep.next_sh = session->vep.next_sh;
2417 if (session->vep.next_sh != ~0)
2419 vcl_session_t *next_session;
2420 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2421 if (PREDICT_FALSE (!next_session))
2423 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2424 "vep.next_sid (%u) on sid (%u)!",
2425 getpid (), session->vep.next_sh, session_handle);
2426 return VPPCOM_EBADFD;
2428 ASSERT (next_session->vep.prev_sh == session_handle);
2429 next_session->vep.prev_sh = session->vep.prev_sh;
2432 memset (&session->vep, 0, sizeof (session->vep));
2433 session->vep.next_sh = ~0;
2434 session->vep.prev_sh = ~0;
2435 session->vep.vep_sh = ~0;
2436 session->is_vep_session = 0;
2437 VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!",
2438 getpid (), vep_handle, session_handle);
2439 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2443 clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op);
2447 vep_verify_epoll_chain (wrk, vep_handle);
2454 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2455 struct epoll_event *events, u32 * num_ev)
2457 session_disconnected_msg_t *disconnected_msg;
2458 session_connected_msg_t *connected_msg;
2459 session_accepted_msg_t *accepted_msg;
2460 u64 session_evt_data = ~0, handle;
2461 u32 sid = ~0, session_events;
2462 vcl_session_msg_t *vcl_msg;
2463 vcl_session_t *session;
2466 switch (e->event_type)
2468 case FIFO_EVENT_APP_RX:
2469 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2470 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2471 sid = e->fifo->client_session_index;
2472 session = vcl_session_get (wrk, sid);
2473 session_events = session->vep.ev.events;
2474 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2477 events[*num_ev].events |= EPOLLIN;
2478 session_evt_data = session->vep.ev.data.u64;
2479 session->has_rx_evt = 1;
2481 case FIFO_EVENT_APP_TX:
2482 sid = e->fifo->client_session_index;
2483 session = vcl_session_get (wrk, sid);
2484 session_events = session->vep.ev.events;
2485 if (!(EPOLLOUT & session_events))
2488 events[*num_ev].events |= EPOLLOUT;
2489 session_evt_data = session->vep.ev.data.u64;
2491 case SESSION_IO_EVT_CT_TX:
2492 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2493 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2494 sid = session->session_index;
2495 session_events = session->vep.ev.events;
2496 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2499 events[*num_ev].events |= EPOLLIN;
2500 session_evt_data = session->vep.ev.data.u64;
2501 session->has_rx_evt = 1;
2503 case SESSION_IO_EVT_CT_RX:
2504 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2505 sid = session->session_index;
2506 session_events = session->vep.ev.events;
2507 if (!(EPOLLOUT & session_events))
2510 events[*num_ev].events |= EPOLLOUT;
2511 session_evt_data = session->vep.ev.data.u64;
2513 case SESSION_CTRL_EVT_ACCEPTED:
2514 accepted_msg = (session_accepted_msg_t *) e->data;
2515 handle = accepted_msg->listener_handle;
2516 session = vcl_session_table_lookup_listener (wrk, handle);
2519 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
2520 "listener handle %llx", getpid (), handle);
2524 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
2525 vcl_msg->accepted_msg = *accepted_msg;
2526 session_events = session->vep.ev.events;
2527 if (!(EPOLLIN & session_events))
2531 events[*num_ev].events |= EPOLLIN;
2532 session_evt_data = session->vep.ev.data.u64;
2534 case SESSION_CTRL_EVT_CONNECTED:
2535 connected_msg = (session_connected_msg_t *) e->data;
2536 vcl_session_connected_handler (wrk, connected_msg);
2537 /* Generate EPOLLOUT because there's no connected event */
2538 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2539 session = vcl_session_get (wrk, sid);
2540 session_events = session->vep.ev.events;
2541 if (EPOLLOUT & session_events)
2544 events[*num_ev].events |= EPOLLOUT;
2545 session_evt_data = session->vep.ev.data.u64;
2548 case SESSION_CTRL_EVT_DISCONNECTED:
2549 disconnected_msg = (session_disconnected_msg_t *) e->data;
2550 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
2551 if (!(session = vcl_session_get (wrk, sid)))
2554 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2555 session_evt_data = session->vep.ev.data.u64;
2556 session_events = session->vep.ev.events;
2558 case SESSION_CTRL_EVT_RESET:
2559 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2560 if (!(session = vcl_session_get (wrk, sid)))
2563 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2564 session_evt_data = session->vep.ev.data.u64;
2565 session_events = session->vep.ev.events;
2568 VDBG (0, "unhandled: %u", e->event_type);
2574 events[*num_ev].data.u64 = session_evt_data;
2575 if (EPOLLONESHOT & session_events)
2577 session = vcl_session_get (wrk, sid);
2578 session->vep.ev.events = 0;
2585 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2586 struct epoll_event *events, u32 maxevents,
2587 double wait_for_time, u32 * num_ev)
2589 svm_msg_q_msg_t *msg;
2593 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2594 goto handle_dequeued;
2596 svm_msg_q_lock (mq);
2597 if (svm_msg_q_is_empty (mq))
2601 svm_msg_q_unlock (mq);
2604 else if (wait_for_time < 0)
2606 svm_msg_q_wait (mq);
2610 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2612 svm_msg_q_unlock (mq);
2617 vcl_mq_dequeue_batch (wrk, mq);
2618 svm_msg_q_unlock (mq);
2621 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2623 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2624 e = svm_msg_q_msg_data (mq, msg);
2625 if (*num_ev < maxevents)
2626 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2628 vec_add1 (wrk->unhandled_evts_vector, *e);
2629 svm_msg_q_free_msg (mq, msg);
2631 vec_reset_length (wrk->mq_msg_vector);
2637 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2638 int maxevents, u32 n_evts, double wait_for_time)
2640 vcl_cut_through_registration_t *cr;
2641 double total_wait = 0, wait_slice;
2644 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2645 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2649 vcl_ct_registration_lock (wrk);
2651 pool_foreach (cr, wrk->cut_through_registrations, ({
2652 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2655 vcl_ct_registration_unlock (wrk);
2657 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2658 maxevents, n_evts ? 0 : wait_slice,
2661 total_wait += wait_slice;
2665 while (total_wait < wait_for_time);
2670 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2671 int maxevents, u32 n_evts, double wait_for_time)
2673 vcl_mq_evt_conn_t *mqc;
2674 int __clib_unused n_read;
2678 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2680 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2681 vec_len (wrk->mq_events), wait_for_time);
2682 for (i = 0; i < n_mq_evts; i++)
2684 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2685 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2686 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2688 if (!n_evts && n_mq_evts > 0)
2691 return (int) n_evts;
2695 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2696 int maxevents, double wait_for_time)
2698 vcl_worker_t *wrk = vcl_worker_get_current ();
2699 vcl_session_t *vep_session;
2703 if (PREDICT_FALSE (maxevents <= 0))
2705 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2706 getpid (), maxevents);
2707 return VPPCOM_EINVAL;
2710 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2712 return VPPCOM_EBADFD;
2714 if (PREDICT_FALSE (!vep_session->is_vep))
2716 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2717 getpid (), vep_handle);
2718 return VPPCOM_EINVAL;
2721 memset (events, 0, sizeof (*events) * maxevents);
2723 if (vec_len (wrk->unhandled_evts_vector))
2725 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2727 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2729 if (n_evts == maxevents)
2736 vec_delete (wrk->unhandled_evts_vector, i, 0);
2739 if (vcm->cfg.use_mq_eventfd)
2740 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2743 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2748 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2749 void *buffer, uint32_t * buflen)
2751 vcl_worker_t *wrk = vcl_worker_get_current ();
2752 vcl_session_t *session;
2754 u32 *flags = buffer;
2755 vppcom_endpt_t *ep = buffer;
2757 session = vcl_session_get_w_handle (wrk, session_handle);
2759 return VPPCOM_EBADFD;
2763 case VPPCOM_ATTR_GET_NREAD:
2764 rv = vppcom_session_read_ready (session);
2765 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2769 case VPPCOM_ATTR_GET_NWRITE:
2770 rv = vppcom_session_write_ready (session);
2771 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2772 getpid (), session_handle, rv);
2775 case VPPCOM_ATTR_GET_FLAGS:
2776 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2778 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2779 VCL_SESS_ATTR_NONBLOCK));
2780 *buflen = sizeof (*flags);
2781 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2782 "is_nonblocking = %u", getpid (),
2783 session_handle, *flags,
2784 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2790 case VPPCOM_ATTR_SET_FLAGS:
2791 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2793 if (*flags & O_NONBLOCK)
2794 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2796 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2798 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2799 " is_nonblocking = %u",
2800 getpid (), session_handle, *flags,
2801 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2807 case VPPCOM_ATTR_GET_PEER_ADDR:
2808 if (PREDICT_TRUE (buffer && buflen &&
2809 (*buflen >= sizeof (*ep)) && ep->ip))
2811 ep->is_ip4 = session->transport.is_ip4;
2812 ep->port = session->transport.rmt_port;
2813 if (session->transport.is_ip4)
2814 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2815 sizeof (ip4_address_t));
2817 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2818 sizeof (ip6_address_t));
2819 *buflen = sizeof (*ep);
2820 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2821 "addr = %U, port %u", getpid (),
2822 session_handle, ep->is_ip4, format_ip46_address,
2823 &session->transport.rmt_ip,
2824 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2825 clib_net_to_host_u16 (ep->port));
2831 case VPPCOM_ATTR_GET_LCL_ADDR:
2832 if (PREDICT_TRUE (buffer && buflen &&
2833 (*buflen >= sizeof (*ep)) && ep->ip))
2835 ep->is_ip4 = session->transport.is_ip4;
2836 ep->port = session->transport.lcl_port;
2837 if (session->transport.is_ip4)
2838 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
2839 sizeof (ip4_address_t));
2841 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
2842 sizeof (ip6_address_t));
2843 *buflen = sizeof (*ep);
2844 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2845 " addr = %U port %d", getpid (),
2846 session_handle, ep->is_ip4, format_ip46_address,
2847 &session->transport.lcl_ip,
2848 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2849 clib_net_to_host_u16 (ep->port));
2855 case VPPCOM_ATTR_GET_LIBC_EPFD:
2856 rv = session->libc_epfd;
2857 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2861 case VPPCOM_ATTR_SET_LIBC_EPFD:
2862 if (PREDICT_TRUE (buffer && buflen &&
2863 (*buflen == sizeof (session->libc_epfd))))
2865 session->libc_epfd = *(int *) buffer;
2866 *buflen = sizeof (session->libc_epfd);
2868 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2869 "buflen %d", getpid (), session->libc_epfd, *buflen);
2875 case VPPCOM_ATTR_GET_PROTOCOL:
2876 if (buffer && buflen && (*buflen >= sizeof (int)))
2878 *(int *) buffer = session->session_type;
2879 *buflen = sizeof (int);
2881 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2882 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
2889 case VPPCOM_ATTR_GET_LISTEN:
2890 if (buffer && buflen && (*buflen >= sizeof (int)))
2892 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2893 VCL_SESS_ATTR_LISTEN);
2894 *buflen = sizeof (int);
2896 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
2897 getpid (), *(int *) buffer, *buflen);
2903 case VPPCOM_ATTR_GET_ERROR:
2904 if (buffer && buflen && (*buflen >= sizeof (int)))
2906 *(int *) buffer = 0;
2907 *buflen = sizeof (int);
2909 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
2910 getpid (), *(int *) buffer, *buflen);
2916 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
2917 if (buffer && buflen && (*buflen >= sizeof (u32)))
2921 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
2922 session->tx_fifo ? session->tx_fifo->nitems :
2923 vcm->cfg.tx_fifo_size);
2924 *buflen = sizeof (u32);
2926 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
2927 "buflen %d, #VPP-TBD#", getpid (),
2928 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2934 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
2935 if (buffer && buflen && (*buflen == sizeof (u32)))
2938 session->sndbuf_size = *(u32 *) buffer;
2939 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
2940 "buflen %d, #VPP-TBD#", getpid (),
2941 session->sndbuf_size, session->sndbuf_size, *buflen);
2947 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
2948 if (buffer && buflen && (*buflen >= sizeof (u32)))
2952 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
2953 session->rx_fifo ? session->rx_fifo->nitems :
2954 vcm->cfg.rx_fifo_size);
2955 *buflen = sizeof (u32);
2957 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
2958 "buflen %d, #VPP-TBD#", getpid (),
2959 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2965 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
2966 if (buffer && buflen && (*buflen == sizeof (u32)))
2969 session->rcvbuf_size = *(u32 *) buffer;
2970 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
2971 "buflen %d, #VPP-TBD#", getpid (),
2972 session->sndbuf_size, session->sndbuf_size, *buflen);
2978 case VPPCOM_ATTR_GET_REUSEADDR:
2979 if (buffer && buflen && (*buflen >= sizeof (int)))
2982 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2983 VCL_SESS_ATTR_REUSEADDR);
2984 *buflen = sizeof (int);
2986 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
2987 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2993 case VPPCOM_ATTR_SET_REUSEADDR:
2994 if (buffer && buflen && (*buflen == sizeof (int)) &&
2995 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
2998 if (*(int *) buffer)
2999 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
3001 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
3003 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
3004 " #VPP-TBD#", getpid (),
3005 VCL_SESS_ATTR_TEST (session->attr,
3006 VCL_SESS_ATTR_REUSEADDR), *buflen);
3012 case VPPCOM_ATTR_GET_REUSEPORT:
3013 if (buffer && buflen && (*buflen >= sizeof (int)))
3016 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3017 VCL_SESS_ATTR_REUSEPORT);
3018 *buflen = sizeof (int);
3020 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
3021 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3027 case VPPCOM_ATTR_SET_REUSEPORT:
3028 if (buffer && buflen && (*buflen == sizeof (int)) &&
3029 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3032 if (*(int *) buffer)
3033 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
3035 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
3037 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
3038 " #VPP-TBD#", getpid (),
3039 VCL_SESS_ATTR_TEST (session->attr,
3040 VCL_SESS_ATTR_REUSEPORT), *buflen);
3046 case VPPCOM_ATTR_GET_BROADCAST:
3047 if (buffer && buflen && (*buflen >= sizeof (int)))
3050 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3051 VCL_SESS_ATTR_BROADCAST);
3052 *buflen = sizeof (int);
3054 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
3055 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3061 case VPPCOM_ATTR_SET_BROADCAST:
3062 if (buffer && buflen && (*buflen == sizeof (int)))
3065 if (*(int *) buffer)
3066 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
3068 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
3070 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
3071 "#VPP-TBD#", getpid (),
3072 VCL_SESS_ATTR_TEST (session->attr,
3073 VCL_SESS_ATTR_BROADCAST), *buflen);
3079 case VPPCOM_ATTR_GET_V6ONLY:
3080 if (buffer && buflen && (*buflen >= sizeof (int)))
3083 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3084 VCL_SESS_ATTR_V6ONLY);
3085 *buflen = sizeof (int);
3087 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
3088 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3094 case VPPCOM_ATTR_SET_V6ONLY:
3095 if (buffer && buflen && (*buflen == sizeof (int)))
3098 if (*(int *) buffer)
3099 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3101 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3103 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
3104 "#VPP-TBD#", getpid (),
3105 VCL_SESS_ATTR_TEST (session->attr,
3106 VCL_SESS_ATTR_V6ONLY), *buflen);
3112 case VPPCOM_ATTR_GET_KEEPALIVE:
3113 if (buffer && buflen && (*buflen >= sizeof (int)))
3116 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3117 VCL_SESS_ATTR_KEEPALIVE);
3118 *buflen = sizeof (int);
3120 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3121 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3127 case VPPCOM_ATTR_SET_KEEPALIVE:
3128 if (buffer && buflen && (*buflen == sizeof (int)))
3131 if (*(int *) buffer)
3132 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3134 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3136 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3137 "#VPP-TBD#", getpid (),
3138 VCL_SESS_ATTR_TEST (session->attr,
3139 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3145 case VPPCOM_ATTR_GET_TCP_NODELAY:
3146 if (buffer && buflen && (*buflen >= sizeof (int)))
3149 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3150 VCL_SESS_ATTR_TCP_NODELAY);
3151 *buflen = sizeof (int);
3153 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3154 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3160 case VPPCOM_ATTR_SET_TCP_NODELAY:
3161 if (buffer && buflen && (*buflen == sizeof (int)))
3164 if (*(int *) buffer)
3165 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3167 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3169 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3170 "#VPP-TBD#", getpid (),
3171 VCL_SESS_ATTR_TEST (session->attr,
3172 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3178 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3179 if (buffer && buflen && (*buflen >= sizeof (int)))
3182 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3183 VCL_SESS_ATTR_TCP_KEEPIDLE);
3184 *buflen = sizeof (int);
3186 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3187 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3193 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3194 if (buffer && buflen && (*buflen == sizeof (int)))
3197 if (*(int *) buffer)
3198 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3200 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3202 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3203 "#VPP-TBD#", getpid (),
3204 VCL_SESS_ATTR_TEST (session->attr,
3205 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3211 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3212 if (buffer && buflen && (*buflen >= sizeof (int)))
3215 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3216 VCL_SESS_ATTR_TCP_KEEPINTVL);
3217 *buflen = sizeof (int);
3219 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3220 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3226 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3227 if (buffer && buflen && (*buflen == sizeof (int)))
3230 if (*(int *) buffer)
3231 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3233 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3235 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3236 "#VPP-TBD#", getpid (),
3237 VCL_SESS_ATTR_TEST (session->attr,
3238 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3244 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3245 if (buffer && buflen && (*buflen >= sizeof (u32)))
3248 *(u32 *) buffer = session->user_mss;
3249 *buflen = sizeof (int);
3251 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3252 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3258 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3259 if (buffer && buflen && (*buflen == sizeof (u32)))
3262 session->user_mss = *(u32 *) buffer;
3264 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3265 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3271 case VPPCOM_ATTR_GET_REFCNT:
3272 rv = vcl_session_get_refcnt (session);
3284 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3285 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3287 vcl_worker_t *wrk = vcl_worker_get_current ();
3289 vcl_session_t *session = 0;
3293 session = vcl_session_get_w_handle (wrk, session_handle);
3294 if (PREDICT_FALSE (!session))
3296 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3297 getpid (), session_handle);
3298 return VPPCOM_EBADFD;
3300 ep->is_ip4 = session->transport.is_ip4;
3301 ep->port = session->transport.rmt_port;
3305 rv = vppcom_session_read (session_handle, buffer, buflen);
3306 else if (flags & MSG_PEEK)
3307 rv = vppcom_session_peek (session_handle, buffer, buflen);
3310 clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d",
3312 return VPPCOM_EAFNOSUPPORT;
3317 if (session->transport.is_ip4)
3318 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3319 sizeof (ip4_address_t));
3321 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3322 sizeof (ip6_address_t));
3329 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3330 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3333 return VPPCOM_EINVAL;
3338 return VPPCOM_EINVAL;
3343 // TBD check the flags and do the right thing
3344 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3345 getpid (), flags, flags);
3348 return (vppcom_session_write (session_handle, buffer, buflen));
3352 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3354 vcl_worker_t *wrk = vcl_worker_get_current ();
3355 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3356 u32 i, keep_trying = 1;
3357 svm_msg_q_msg_t msg;
3361 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3362 getpid (), vp, n_sids, wait_for_time);
3365 return VPPCOM_EFAULT;
3369 vcl_session_t *session;
3371 /* Dequeue all events and drop all unhandled io events */
3372 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3374 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3375 vcl_handle_mq_event (wrk, e);
3376 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3378 vec_reset_length (wrk->unhandled_evts_vector);
3380 for (i = 0; i < n_sids; i++)
3382 session = vcl_session_get (wrk, vp[i].sid);
3385 vp[i].revents = POLLHUP;
3392 if (POLLIN & vp[i].events)
3394 rv = vppcom_session_read_ready (session);
3397 vp[i].revents |= POLLIN;
3404 case VPPCOM_ECONNRESET:
3405 vp[i].revents = POLLHUP;
3409 vp[i].revents = POLLERR;
3416 if (POLLOUT & vp[i].events)
3418 rv = vppcom_session_write_ready (session);
3421 vp[i].revents |= POLLOUT;
3428 case VPPCOM_ECONNRESET:
3429 vp[i].revents = POLLHUP;
3433 vp[i].revents = POLLERR;
3440 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3442 vp[i].revents = POLLNVAL;
3446 if (wait_for_time != -1)
3447 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3449 while ((num_ev == 0) && keep_trying);
3451 if (VPPCOM_DEBUG > 3)
3453 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3454 for (i = 0; i < n_sids; i++)
3456 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3457 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3458 vp[i].events, vp[i].revents);
3465 vppcom_mq_epoll_fd (void)
3467 vcl_worker_t *wrk = vcl_worker_get_current ();
3468 return wrk->mqs_epfd;
3472 vppcom_session_index (uint32_t session_handle)
3474 return session_handle & 0xFFFFFF;
3478 vppcom_session_handle (uint32_t session_index)
3480 return (vcl_get_worker_index () << 24) | session_index;
3484 vppcom_worker_register (void)
3486 if (!vcl_worker_alloc_and_init ())
3487 return VPPCOM_EEXIST;
3489 if (vcl_worker_set_bapi ())
3490 return VPPCOM_EEXIST;
3492 if (vcl_worker_register_with_vpp ())
3493 return VPPCOM_EEXIST;
3499 vppcom_worker_index (void)
3501 return vcl_get_worker_index ();
3505 * fd.io coding-style-patch-verification: ON
3508 * eval: (c-set-style "gnu")