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, "session %u [0x%llx]: listen succeeded!", sid, mp->handle);
472 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
474 session_accepted_msg_t *accepted_msg;
475 session_disconnected_msg_t *disconnected_msg;
476 vcl_session_msg_t *vcl_msg;
477 vcl_session_t *session;
481 switch (e->event_type)
483 case FIFO_EVENT_APP_RX:
484 case FIFO_EVENT_APP_TX:
485 case SESSION_IO_EVT_CT_RX:
486 case SESSION_IO_EVT_CT_TX:
487 vec_add1 (wrk->unhandled_evts_vector, *e);
489 case SESSION_CTRL_EVT_ACCEPTED:
490 accepted_msg = (session_accepted_msg_t *) e->data;
491 handle = accepted_msg->listener_handle;
492 session = vcl_session_table_lookup_listener (wrk, handle);
495 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
496 "listener handle %llx", getpid (), handle);
500 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
501 vcl_msg->accepted_msg = *accepted_msg;
503 case SESSION_CTRL_EVT_CONNECTED:
504 vcl_session_connected_handler (wrk,
505 (session_connected_msg_t *) e->data);
507 case SESSION_CTRL_EVT_DISCONNECTED:
508 disconnected_msg = (session_disconnected_msg_t *) e->data;
509 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
510 session = vcl_session_get (wrk, sid);
513 VDBG (0, "request to disconnect unknown handle 0x%llx",
514 disconnected_msg->handle);
517 session->session_state = STATE_DISCONNECT;
518 VDBG (0, "disconnected handle 0x%llx, sid %u", disconnected_msg->handle,
521 case SESSION_CTRL_EVT_RESET:
522 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
524 case SESSION_CTRL_EVT_BOUND:
525 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
528 clib_warning ("unhandled %u", e->event_type);
534 vppcom_wait_for_session_state_change (u32 session_index,
535 session_state_t state,
538 vcl_worker_t *wrk = vcl_worker_get_current ();
539 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
540 vcl_session_t *volatile session;
546 session = vcl_session_get (wrk, session_index);
547 if (PREDICT_FALSE (!session))
549 return VPPCOM_EBADFD;
551 if (session->session_state & state)
555 if (session->session_state & STATE_FAILED)
557 return VPPCOM_ECONNREFUSED;
560 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
565 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
566 vcl_handle_mq_event (wrk, e);
567 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
569 while (clib_time_now (&wrk->clib_time) < timeout);
571 VDBG (0, "timeout waiting for state 0x%x (%s)", state,
572 vppcom_session_state_str (state));
573 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
575 return VPPCOM_ETIMEDOUT;
579 vppcom_app_session_enable (void)
583 if (vcm->app_state != STATE_APP_ENABLED)
585 vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
586 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
587 if (PREDICT_FALSE (rv))
589 VDBG (0, "VCL<%d>: application session enable timed out! "
590 "returning %d (%s)", getpid (), rv, vppcom_retval_str (rv));
598 vppcom_app_attach (void)
602 vppcom_app_send_attach ();
603 rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED);
604 if (PREDICT_FALSE (rv))
606 VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)",
607 getpid (), rv, vppcom_retval_str (rv));
615 vppcom_session_unbind (u32 session_handle)
617 vcl_worker_t *wrk = vcl_worker_get_current ();
618 vcl_session_t *session = 0;
621 session = vcl_session_get_w_handle (wrk, session_handle);
623 return VPPCOM_EBADFD;
625 vpp_handle = session->vpp_handle;
626 vcl_session_table_del_listener (wrk, vpp_handle);
627 session->vpp_handle = ~0;
628 session->session_state = STATE_DISCONNECT;
630 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state"
631 " 0x%x (%s)", getpid (), vpp_handle, session_handle, STATE_DISCONNECT,
632 vppcom_session_state_str (STATE_DISCONNECT));
633 vcl_evt (VCL_EVT_UNBIND, session);
634 vppcom_send_unbind_sock (vpp_handle);
640 vppcom_session_disconnect (u32 session_handle)
642 vcl_worker_t *wrk = vcl_worker_get_current ();
643 svm_msg_q_t *vpp_evt_q;
644 vcl_session_t *session;
645 session_state_t state;
648 session = vcl_session_get_w_handle (wrk, session_handle);
650 return VPPCOM_EBADFD;
652 vpp_handle = session->vpp_handle;
653 state = session->session_state;
655 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (),
656 vpp_handle, session_handle, state, vppcom_session_state_str (state));
658 if (PREDICT_FALSE (state & STATE_LISTEN))
660 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
661 "Cannot disconnect a listen socket!",
662 getpid (), vpp_handle, session_handle);
663 return VPPCOM_EBADFD;
666 if (state & STATE_CLOSE_ON_EMPTY)
668 vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
669 vcl_send_session_disconnected_reply (vpp_evt_q, wrk->my_client_index,
671 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect "
672 "REPLY...", getpid (), vpp_handle, session_handle);
676 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...",
677 getpid (), vpp_handle, session_handle);
678 vppcom_send_disconnect_session (vpp_handle);
685 vcl_cleanup_bapi (void)
687 socket_client_main_t *scm = &socket_client_main;
688 api_main_t *am = &api_main;
690 am->my_client_index = ~0;
691 am->my_registration = 0;
692 am->vl_input_queue = 0;
693 am->msg_index_by_name_and_crc = 0;
696 vl_client_api_unmap ();
700 vcl_cleanup_forked_child (vcl_worker_t * wrk, vcl_worker_t * child_wrk)
702 vcl_worker_t *sub_child;
705 if (child_wrk->forked_child != ~0)
707 sub_child = vcl_worker_get_if_valid (child_wrk->forked_child);
710 /* Wait a bit, maybe the process is going away */
711 while (kill (sub_child->current_pid, 0) >= 0 && tries++ < 50)
713 if (kill (sub_child->current_pid, 0) < 0)
714 vcl_cleanup_forked_child (child_wrk, sub_child);
717 vcl_worker_cleanup (child_wrk, 1 /* notify vpp */ );
718 VDBG (0, "Cleaned up wrk %u", child_wrk->wrk_index);
719 wrk->forked_child = ~0;
722 static struct sigaction old_sa;
725 vcl_intercept_sigchld_handler (int signum, siginfo_t * si, void *uc)
727 vcl_worker_t *wrk, *child_wrk;
729 if (vcl_get_worker_index () == ~0)
732 sigaction (SIGCHLD, &old_sa, 0);
734 wrk = vcl_worker_get_current ();
735 if (wrk->forked_child == ~0)
738 child_wrk = vcl_worker_get_if_valid (wrk->forked_child);
742 if (si && si->si_pid != child_wrk->current_pid)
744 VDBG (0, "unexpected child pid %u", si->si_pid);
747 vcl_cleanup_forked_child (wrk, child_wrk);
750 if (old_sa.sa_flags & SA_SIGINFO)
752 void (*fn) (int, siginfo_t *, void *) = old_sa.sa_sigaction;
757 void (*fn) (int) = old_sa.sa_handler;
764 vcl_incercept_sigchld ()
767 clib_memset (&sa, 0, sizeof (sa));
768 sa.sa_sigaction = vcl_intercept_sigchld_handler;
769 sa.sa_flags = SA_SIGINFO;
770 if (sigaction (SIGCHLD, &sa, &old_sa))
772 VERR ("couldn't intercept sigchld");
778 vcl_app_pre_fork (void)
780 vcl_incercept_sigchld ();
784 vcl_app_fork_child_handler (void)
786 int rv, parent_wrk_index;
787 vcl_worker_t *parent_wrk;
790 parent_wrk_index = vcl_get_worker_index ();
791 VDBG (0, "initializing forked child with parent wrk %u", parent_wrk_index);
796 vcl_set_worker_index (~0);
797 if (!vcl_worker_alloc_and_init ())
798 VERR ("couldn't allocate new worker");
801 * Attach to binary api
803 child_name = format (0, "%v-child-%u%c", vcm->app_name, getpid (), 0);
805 vppcom_api_hookup ();
806 vcm->app_state = STATE_APP_START;
807 rv = vppcom_connect_to_vpp ((char *) child_name);
808 vec_free (child_name);
811 VERR ("couldn't connect to VPP!");
816 * Register worker with vpp and share sessions
818 vcl_worker_register_with_vpp ();
819 parent_wrk = vcl_worker_get (parent_wrk_index);
820 vcl_worker_share_sessions (parent_wrk);
821 parent_wrk->forked_child = vcl_get_worker_index ();
823 VDBG (0, "forked child main worker initialized");
828 vcl_app_fork_parent_handler (void)
838 * Notify vpp of the disconnect and mark the worker as free. If we're the
839 * last worker, do a full cleanup otherwise, since we're probably a forked
840 * child, avoid syscalls as much as possible. We might've lost privileges.
843 vppcom_app_exit (void)
845 if (!pool_elts (vcm->workers))
847 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
848 vcl_set_worker_index (~0);
850 if (vec_len (vcm->workers) == 1)
851 vl_client_disconnect_from_vlib ();
853 vl_client_send_disconnect (1 /* vpp should cleanup */ );
857 * VPPCOM Public API functions
860 vppcom_app_create (char *app_name)
862 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
867 VDBG (1, "already initialized");
868 return VPPCOM_EEXIST;
872 vppcom_cfg (&vcm->cfg);
875 vcm->main_cpu = pthread_self ();
876 vcm->main_pid = getpid ();
877 vcm->app_name = format (0, "%s", app_name);
878 vppcom_init_error_string_table ();
879 svm_fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva,
880 20 /* timeout in secs */ );
881 pool_alloc (vcm->workers, vcl_cfg->max_workers);
882 clib_spinlock_init (&vcm->workers_lock);
883 clib_rwlock_init (&vcm->segment_table_lock);
884 pthread_atfork (vcl_app_pre_fork, vcl_app_fork_parent_handler,
885 vcl_app_fork_child_handler);
886 atexit (vppcom_app_exit);
888 /* Allocate default worker */
889 vcl_worker_alloc_and_init ();
891 /* API hookup and connect to VPP */
892 vppcom_api_hookup ();
894 vcm->app_state = STATE_APP_START;
895 rv = vppcom_connect_to_vpp (app_name);
898 VERR ("couldn't connect to VPP!");
901 VDBG (0, "sending session enable");
902 rv = vppcom_app_session_enable ();
905 VERR ("vppcom_app_session_enable() failed!");
909 VDBG (0, "sending app attach");
910 rv = vppcom_app_attach ();
913 VERR ("vppcom_app_attach() failed!");
917 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
918 vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
924 vppcom_app_destroy (void)
927 f64 orig_app_timeout;
929 if (!pool_elts (vcm->workers))
932 vcl_evt (VCL_EVT_DETACH, vcm);
934 if (pool_elts (vcm->workers) == 1)
936 vppcom_app_send_detach ();
937 orig_app_timeout = vcm->cfg.app_timeout;
938 vcm->cfg.app_timeout = 2.0;
939 rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
940 vcm->cfg.app_timeout = orig_app_timeout;
941 if (PREDICT_FALSE (rv))
942 VDBG (0, "application detach timed out! returning %d (%s)", rv,
943 vppcom_retval_str (rv));
944 vec_free (vcm->app_name);
945 vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ );
949 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
952 vcl_set_worker_index (~0);
954 vl_client_disconnect_from_vlib ();
958 vppcom_session_create (u8 proto, u8 is_nonblocking)
960 vcl_worker_t *wrk = vcl_worker_get_current ();
961 vcl_session_t *session;
963 session = vcl_session_alloc (wrk);
965 session->session_type = proto;
966 session->session_state = STATE_START;
967 session->vpp_handle = ~0;
968 session->is_dgram = proto == VPPCOM_PROTO_UDP;
971 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
973 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
974 is_nonblocking, session_index);
976 VDBG (0, "created sid %u", session->session_index);
978 return vcl_session_handle (session);
982 vppcom_session_close (uint32_t session_handle)
984 vcl_worker_t *wrk = vcl_worker_get_current ();
985 u8 is_vep, do_disconnect = 1;
986 vcl_session_t *session = 0;
987 session_state_t state;
992 session = vcl_session_get_w_handle (wrk, session_handle);
994 return VPPCOM_EBADFD;
996 if (session->shared_index != ~0)
997 do_disconnect = vcl_worker_unshare_session (wrk, session);
999 is_vep = session->is_vep;
1000 next_sh = session->vep.next_sh;
1001 vep_sh = session->vep.vep_sh;
1002 state = session->session_state;
1003 vpp_handle = session->vpp_handle;
1005 VDBG (1, "closing session handle %u vpp handle %u", session_handle,
1010 while (next_sh != ~0)
1012 rv = vppcom_epoll_ctl (session_handle, EPOLL_CTL_DEL, next_sh, 0);
1013 if (PREDICT_FALSE (rv < 0))
1014 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u"
1015 " failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
1016 vppcom_retval_str (rv));
1018 next_sh = session->vep.next_sh;
1023 if (session->is_vep_session)
1025 rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, session_handle, 0);
1027 VDBG (0, "vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL vep_idx %u "
1028 "failed! rv %d (%s)", vpp_handle, session_handle, vep_sh,
1029 rv, vppcom_retval_str (rv));
1035 if (state & STATE_LISTEN)
1037 rv = vppcom_session_unbind (session_handle);
1038 if (PREDICT_FALSE (rv < 0))
1039 VDBG (0, "vpp handle 0x%llx, sid %u: listener unbind failed! "
1040 "rv %d (%s)", vpp_handle, session_handle, rv,
1041 vppcom_retval_str (rv));
1043 else if (state & STATE_OPEN)
1045 rv = vppcom_session_disconnect (session_handle);
1046 if (PREDICT_FALSE (rv < 0))
1047 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1048 "session disconnect failed! rv %d (%s)",
1049 getpid (), vpp_handle, session_handle,
1050 rv, vppcom_retval_str (rv));
1056 if (vcl_session_is_ct (session))
1058 vcl_cut_through_registration_t *ctr;
1061 mq_addr = pointer_to_uword (session->our_evt_q);
1062 ctr = vcl_ct_registration_lock_and_lookup (wrk, mq_addr);
1064 if (ctr->epoll_evt_conn_index != ~0)
1065 vcl_mq_epoll_del_evfd (wrk, ctr->epoll_evt_conn_index);
1066 VDBG (0, "Removing ct registration %u",
1067 vcl_ct_registration_index (wrk, ctr));
1068 vcl_ct_registration_del (wrk, ctr);
1069 vcl_ct_registration_lookup_del (wrk, mq_addr);
1070 vcl_ct_registration_unlock (wrk);
1073 if (vpp_handle != ~0)
1075 vcl_session_table_del_vpp_handle (wrk, vpp_handle);
1077 vcl_session_free (wrk, session);
1079 VDBG (0, "session handle %u [0x%llx] removed", session_handle, vpp_handle);
1081 vcl_evt (VCL_EVT_CLOSE, session, rv);
1087 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1089 vcl_worker_t *wrk = vcl_worker_get_current ();
1090 vcl_session_t *session = 0;
1093 return VPPCOM_EINVAL;
1095 session = vcl_session_get_w_handle (wrk, session_handle);
1097 return VPPCOM_EBADFD;
1099 if (session->is_vep)
1101 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1102 "bind to an epoll session!", getpid (), session_handle);
1103 return VPPCOM_EBADFD;
1106 session->transport.is_ip4 = ep->is_ip4;
1108 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1109 sizeof (ip4_address_t));
1111 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1112 sizeof (ip6_address_t));
1113 session->transport.lcl_port = ep->port;
1115 VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
1116 "proto %s", getpid (), session_handle,
1117 session->transport.is_ip4 ? "IPv4" : "IPv6",
1118 format_ip46_address, &session->transport.lcl_ip,
1119 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1120 clib_net_to_host_u16 (session->transport.lcl_port),
1121 session->session_type ? "UDP" : "TCP");
1122 vcl_evt (VCL_EVT_BIND, session);
1124 if (session->session_type == VPPCOM_PROTO_UDP)
1125 vppcom_session_listen (session_handle, 10);
1131 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1133 vcl_worker_t *wrk = vcl_worker_get_current ();
1134 vcl_session_t *listen_session = 0;
1135 u64 listen_vpp_handle;
1138 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1139 if (!listen_session || listen_session->is_vep)
1140 return VPPCOM_EBADFD;
1142 if (q_len == 0 || q_len == ~0)
1143 q_len = vcm->cfg.listen_queue_size;
1145 listen_vpp_handle = listen_session->vpp_handle;
1146 if (listen_session->session_state & STATE_LISTEN)
1148 VDBG (0, "session %u [0x%llx]: already in listen state!",
1149 listen_sh, listen_vpp_handle);
1153 VDBG (0, "session %u [0x%llx]: sending vpp listen request...",
1154 listen_sh, listen_vpp_handle);
1157 * Send listen request to vpp and wait for reply
1159 vppcom_send_bind_sock (listen_session);
1160 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1162 vcm->cfg.session_timeout);
1164 if (PREDICT_FALSE (rv))
1166 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1167 VDBG (0, "session %u [0x%llx]: listen failed! returning %d (%s)",
1168 listen_sh, listen_session->vpp_handle, rv,
1169 vppcom_retval_str (rv));
1177 validate_args_session_accept_ (vcl_worker_t * wrk,
1178 vcl_session_t * listen_session)
1180 /* Input validation - expects spinlock on sessions_lockp */
1181 if (listen_session->is_vep)
1183 clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
1184 "epoll session!", getpid (),
1185 listen_session->session_index);
1186 return VPPCOM_EBADFD;
1189 if (listen_session->session_state != STATE_LISTEN)
1191 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1192 "not in listen state! state 0x%x (%s)", getpid (),
1193 listen_session->vpp_handle, listen_session->session_index,
1194 listen_session->session_state,
1195 vppcom_session_state_str (listen_session->session_state));
1196 return VPPCOM_EBADFD;
1202 vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
1205 u32 client_session_index = ~0, listen_session_index;
1206 vcl_worker_t *wrk = vcl_worker_get_current ();
1207 session_accepted_msg_t accepted_msg;
1208 vcl_session_t *listen_session = 0;
1209 vcl_session_t *client_session = 0;
1210 svm_msg_q_t *vpp_evt_q;
1211 vcl_session_msg_t *evt;
1212 u64 listen_vpp_handle;
1213 svm_msg_q_msg_t msg;
1218 listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
1219 if (!listen_session)
1220 return VPPCOM_EBADFD;
1222 listen_session_index = listen_session->session_index;
1223 if ((rv = validate_args_session_accept_ (wrk, listen_session)))
1226 if (clib_fifo_elts (listen_session->accept_evts_fifo))
1228 clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
1229 accepted_msg = evt->accepted_msg;
1233 is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
1234 VCL_SESS_ATTR_NONBLOCK);
1235 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1236 return VPPCOM_EAGAIN;
1240 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
1241 return VPPCOM_EAGAIN;
1243 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1244 if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
1246 clib_warning ("discarded event: %u", e->event_type);
1247 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1250 clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
1251 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1257 client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg);
1258 listen_session = vcl_session_get (wrk, listen_session_index);
1259 client_session = vcl_session_get (wrk, client_session_index);
1261 if (flags & O_NONBLOCK)
1262 VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
1264 listen_vpp_handle = listen_session->vpp_handle;
1265 VDBG (1, "vpp handle 0x%llx, sid %u: Got a client request! "
1266 "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
1267 listen_vpp_handle, listen_session_handle,
1268 client_session->vpp_handle, client_session_index,
1269 flags, VCL_SESS_ATTR_TEST (client_session->attr,
1270 VCL_SESS_ATTR_NONBLOCK));
1274 ep->is_ip4 = client_session->transport.is_ip4;
1275 ep->port = client_session->transport.rmt_port;
1276 if (client_session->transport.is_ip4)
1277 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1278 sizeof (ip4_address_t));
1280 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1281 sizeof (ip6_address_t));
1284 if (accepted_msg.server_event_queue_address)
1285 vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address,
1288 vpp_evt_q = client_session->vpp_evt_q;
1290 vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context,
1291 client_session->vpp_handle, 0);
1293 VDBG (0, "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u "
1294 "local: %U:%u", listen_session_handle, listen_vpp_handle,
1295 client_session_index, client_session->vpp_handle,
1296 format_ip46_address, &client_session->transport.rmt_ip,
1297 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1298 clib_net_to_host_u16 (client_session->transport.rmt_port),
1299 format_ip46_address, &client_session->transport.lcl_ip,
1300 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1301 clib_net_to_host_u16 (client_session->transport.lcl_port));
1302 vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
1303 client_session_index);
1305 return vcl_session_handle (client_session);
1309 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1311 vcl_worker_t *wrk = vcl_worker_get_current ();
1312 vcl_session_t *session = 0;
1316 session = vcl_session_get_w_handle (wrk, session_handle);
1318 return VPPCOM_EBADFD;
1319 session_index = session->session_index;
1321 if (PREDICT_FALSE (session->is_vep))
1323 clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
1324 "connect on an epoll session!", getpid (),
1326 return VPPCOM_EBADFD;
1329 if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
1331 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
1332 "connected to %s %U port %d proto %s, state 0x%x (%s)",
1333 getpid (), session->vpp_handle, session_handle,
1334 session->transport.is_ip4 ? "IPv4" : "IPv6",
1335 format_ip46_address,
1336 &session->transport.rmt_ip, session->transport.is_ip4 ?
1337 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1338 clib_net_to_host_u16 (session->transport.rmt_port),
1339 session->session_type ? "UDP" : "TCP", session->session_state,
1340 vppcom_session_state_str (session->session_state));
1344 session->transport.is_ip4 = server_ep->is_ip4;
1345 if (session->transport.is_ip4)
1346 clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
1347 sizeof (ip4_address_t));
1349 clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
1350 sizeof (ip6_address_t));
1351 session->transport.rmt_port = server_ep->port;
1353 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
1355 getpid (), session->vpp_handle, session_handle,
1356 session->transport.is_ip4 ? "IPv4" : "IPv6",
1357 format_ip46_address,
1358 &session->transport.rmt_ip, session->transport.is_ip4 ?
1359 IP46_TYPE_IP4 : IP46_TYPE_IP6,
1360 clib_net_to_host_u16 (session->transport.rmt_port),
1361 session->session_type ? "UDP" : "TCP");
1364 * Send connect request and wait for reply from vpp
1366 vppcom_send_connect_sock (session);
1367 rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
1368 vcm->cfg.session_timeout);
1370 session = vcl_session_get (wrk, session_index);
1372 if (PREDICT_FALSE (rv))
1374 if (VPPCOM_DEBUG > 0)
1377 clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
1378 "failed! returning %d (%s)", getpid (),
1379 session->vpp_handle, session_handle, rv,
1380 vppcom_retval_str (rv));
1382 clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
1383 "returning %d (%s)", getpid (),
1384 session_handle, rv, vppcom_retval_str (rv));
1388 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
1389 getpid (), session->vpp_handle, session_handle);
1395 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1398 return (e->event_type == FIFO_EVENT_APP_RX
1399 && e->fifo->client_session_index == sid);
1401 return (e->event_type == SESSION_IO_EVT_CT_TX);
1405 vcl_session_is_readable (vcl_session_t * s)
1407 return ((s->session_state & STATE_OPEN)
1408 || (s->session_state == STATE_LISTEN
1409 && s->session_type == VPPCOM_PROTO_UDP));
1413 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
1416 vcl_worker_t *wrk = vcl_worker_get_current ();
1417 int n_read = 0, rv, is_nonblocking;
1418 vcl_session_t *s = 0;
1419 svm_fifo_t *rx_fifo;
1420 svm_msg_q_msg_t msg;
1425 if (PREDICT_FALSE (!buf))
1426 return VPPCOM_EINVAL;
1428 s = vcl_session_get_w_handle (wrk, session_handle);
1429 if (PREDICT_FALSE (!s || s->is_vep))
1430 return VPPCOM_EBADFD;
1432 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1434 session_state_t state = s->session_state;
1435 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1437 VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! "
1438 "state 0x%x (%s), returning %d (%s)",
1439 getpid (), s->vpp_handle, session_handle, state,
1440 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1444 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1445 is_ct = vcl_session_is_ct (s);
1446 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1447 rx_fifo = s->rx_fifo;
1450 if (svm_fifo_is_empty (rx_fifo))
1454 svm_fifo_unset_event (rx_fifo);
1455 return VPPCOM_EWOULDBLOCK;
1457 while (svm_fifo_is_empty (rx_fifo))
1459 svm_fifo_unset_event (rx_fifo);
1460 svm_msg_q_lock (mq);
1461 if (svm_msg_q_is_empty (mq))
1462 svm_msg_q_wait (mq);
1464 svm_msg_q_sub_w_lock (mq, &msg);
1465 e = svm_msg_q_msg_data (mq, &msg);
1466 svm_msg_q_unlock (mq);
1467 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1469 vcl_handle_mq_event (wrk, e);
1470 svm_msg_q_free_msg (mq, &msg);
1473 svm_msg_q_free_msg (mq, &msg);
1475 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1481 n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
1483 n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
1485 if (svm_fifo_is_empty (rx_fifo))
1486 svm_fifo_unset_event (rx_fifo);
1488 if (is_ct && svm_fifo_want_tx_evt (rx_fifo))
1490 svm_fifo_set_want_tx_evt (s->rx_fifo, 0);
1491 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo, SESSION_IO_EVT_CT_RX,
1495 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes from (%p)",
1496 getpid (), s->vpp_handle, session_handle, n_read, rx_fifo);
1502 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
1504 return (vppcom_session_read_internal (session_handle, buf, n, 0));
1508 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
1510 return (vppcom_session_read_internal (session_handle, buf, n, 1));
1514 vppcom_session_read_segments (uint32_t session_handle,
1515 vppcom_data_segments_t ds)
1517 vcl_worker_t *wrk = vcl_worker_get_current ();
1518 int n_read = 0, rv, is_nonblocking;
1519 vcl_session_t *s = 0;
1520 svm_fifo_t *rx_fifo;
1521 svm_msg_q_msg_t msg;
1526 s = vcl_session_get_w_handle (wrk, session_handle);
1527 if (PREDICT_FALSE (!s || s->is_vep))
1528 return VPPCOM_EBADFD;
1530 if (PREDICT_FALSE (!vcl_session_is_readable (s)))
1532 session_state_t state = s->session_state;
1533 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1537 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1538 is_ct = vcl_session_is_ct (s);
1539 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1540 rx_fifo = s->rx_fifo;
1543 if (svm_fifo_is_empty (rx_fifo))
1547 svm_fifo_unset_event (rx_fifo);
1548 return VPPCOM_EWOULDBLOCK;
1550 while (svm_fifo_is_empty (rx_fifo))
1552 svm_fifo_unset_event (rx_fifo);
1553 svm_msg_q_lock (mq);
1554 if (svm_msg_q_is_empty (mq))
1555 svm_msg_q_wait (mq);
1557 svm_msg_q_sub_w_lock (mq, &msg);
1558 e = svm_msg_q_msg_data (mq, &msg);
1559 svm_msg_q_unlock (mq);
1560 if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
1562 vcl_handle_mq_event (wrk, e);
1563 svm_msg_q_free_msg (mq, &msg);
1566 svm_msg_q_free_msg (mq, &msg);
1568 if (PREDICT_FALSE (s->session_state == STATE_CLOSE_ON_EMPTY))
1573 n_read = svm_fifo_segments (rx_fifo, (svm_fifo_segment_t *) ds);
1574 svm_fifo_unset_event (rx_fifo);
1576 if (is_ct && n_read + svm_fifo_max_dequeue (rx_fifo) == rx_fifo->nitems)
1578 /* If the peer is not polling send notification */
1579 if (!svm_fifo_has_event (s->rx_fifo))
1580 app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo,
1581 SESSION_IO_EVT_CT_RX, SVM_Q_WAIT);
1588 vppcom_session_free_segments (uint32_t session_handle,
1589 vppcom_data_segments_t ds)
1591 vcl_worker_t *wrk = vcl_worker_get_current ();
1594 s = vcl_session_get_w_handle (wrk, session_handle);
1595 if (PREDICT_FALSE (!s || s->is_vep))
1598 svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
1602 vppcom_session_read_ready (vcl_session_t * session)
1604 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1605 if (PREDICT_FALSE (session->is_vep))
1607 clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
1608 "epoll session!", getpid (), session->session_index);
1609 return VPPCOM_EBADFD;
1612 if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
1614 session_state_t state = session->session_state;
1617 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1619 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
1620 " state 0x%x (%s), returning %d (%s)", getpid (),
1621 session->vpp_handle, session->session_index, state,
1622 vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
1626 if (session->session_state & STATE_LISTEN)
1627 return clib_fifo_elts (session->accept_evts_fifo);
1629 return svm_fifo_max_dequeue (session->rx_fifo);
1633 vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
1635 u32 first_copy = clib_min (ds[0].len, max_bytes);
1636 clib_memcpy_fast (buf, ds[0].data, first_copy);
1637 if (first_copy < max_bytes)
1639 clib_memcpy_fast (buf + first_copy, ds[1].data,
1640 clib_min (ds[1].len, max_bytes - first_copy));
1646 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
1649 return (e->event_type == FIFO_EVENT_APP_TX
1650 && e->fifo->client_session_index == sid);
1652 return (e->event_type == SESSION_IO_EVT_CT_RX);
1656 vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
1659 vcl_worker_t *wrk = vcl_worker_get_current ();
1660 int rv, n_write, is_nonblocking;
1661 vcl_session_t *s = 0;
1662 svm_fifo_t *tx_fifo = 0;
1663 session_evt_type_t et;
1664 svm_msg_q_msg_t msg;
1669 if (PREDICT_FALSE (!buf))
1670 return VPPCOM_EINVAL;
1672 s = vcl_session_get_w_handle (wrk, session_handle);
1673 if (PREDICT_FALSE (!s))
1674 return VPPCOM_EBADFD;
1676 if (PREDICT_FALSE (s->is_vep))
1678 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1679 "cannot write to an epoll session!",
1680 getpid (), s->vpp_handle, session_handle);
1682 return VPPCOM_EBADFD;
1685 if (PREDICT_FALSE (!(s->session_state & STATE_OPEN)))
1687 session_state_t state = s->session_state;
1688 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1689 VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
1690 "state 0x%x (%s)", getpid (), s->vpp_handle, session_handle,
1691 state, vppcom_session_state_str (state));
1695 tx_fifo = s->tx_fifo;
1696 is_ct = vcl_session_is_ct (s);
1697 is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
1698 mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
1699 if (svm_fifo_is_full (tx_fifo))
1703 return VPPCOM_EWOULDBLOCK;
1705 while (svm_fifo_is_full (tx_fifo))
1707 svm_fifo_set_want_tx_evt (tx_fifo, 1);
1708 svm_msg_q_lock (mq);
1709 if (svm_msg_q_is_empty (mq))
1710 svm_msg_q_wait (mq);
1712 svm_msg_q_sub_w_lock (mq, &msg);
1713 e = svm_msg_q_msg_data (mq, &msg);
1714 svm_msg_q_unlock (mq);
1716 if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
1717 vcl_handle_mq_event (wrk, e);
1718 svm_msg_q_free_msg (mq, &msg);
1722 ASSERT (FIFO_EVENT_APP_TX + 1 == SESSION_IO_EVT_CT_TX);
1723 et = FIFO_EVENT_APP_TX + vcl_session_is_ct (s);
1724 if (is_flush && !vcl_session_is_ct (s))
1725 et = SESSION_IO_EVT_TX_FLUSH;
1728 n_write = app_send_dgram_raw (tx_fifo, &s->transport,
1729 s->vpp_evt_q, buf, n, et, SVM_Q_WAIT);
1731 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
1734 ASSERT (n_write > 0);
1736 VDBG (2, "VCL<%d>: vpp handle 0x%llx, sid %u: wrote %d bytes", getpid (),
1737 s->vpp_handle, session_handle, n_write);
1743 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
1745 return vppcom_session_write_inline (session_handle, buf, n,
1749 static vcl_session_t *
1750 vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
1753 s = vcl_session_get (wrk, f->client_session_index);
1757 if (type == 0 && s->rx_fifo == f)
1760 if (type == 1 && s->tx_fifo == f)
1763 s = vcl_session_get (wrk, f->master_session_index);
1766 if (type == 0 && s->rx_fifo == f)
1768 if (type == 1 && s->tx_fifo == f)
1775 vppcom_session_write_ready (vcl_session_t * session)
1777 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
1778 if (PREDICT_FALSE (session->is_vep))
1780 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1781 "cannot write to an epoll session!",
1782 getpid (), session->vpp_handle, session->session_index);
1783 return VPPCOM_EBADFD;
1786 if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
1788 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1789 "cannot write to a listen session!",
1790 getpid (), session->vpp_handle, session->session_index);
1791 return VPPCOM_EBADFD;
1794 if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
1796 session_state_t state = session->session_state;
1799 rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
1800 clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
1801 "session is not open! state 0x%x (%s), "
1802 "returning %d (%s)", getpid (), session->vpp_handle,
1803 session->session_index,
1804 state, vppcom_session_state_str (state),
1805 rv, vppcom_retval_str (rv));
1809 VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
1810 getpid (), session->vpp_handle, session->session_index,
1811 session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo));
1813 return svm_fifo_max_enqueue (session->tx_fifo);
1817 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq)
1819 svm_msg_q_msg_t *msg;
1823 n_msgs = svm_msg_q_size (mq);
1824 for (i = 0; i < n_msgs; i++)
1826 vec_add2 (wrk->mq_msg_vector, msg, 1);
1827 svm_msg_q_sub_w_lock (mq, msg);
1832 #define vcl_fifo_rx_evt_valid_or_break(_fifo) \
1833 if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
1835 svm_fifo_unset_event (_fifo); \
1836 if (svm_fifo_is_empty (_fifo)) \
1841 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
1842 unsigned long n_bits, unsigned long *read_map,
1843 unsigned long *write_map,
1844 unsigned long *except_map, u32 * bits_set)
1846 session_disconnected_msg_t *disconnected_msg;
1847 session_connected_msg_t *connected_msg;
1848 session_accepted_msg_t *accepted_msg;
1849 vcl_session_msg_t *vcl_msg;
1850 vcl_session_t *session;
1854 switch (e->event_type)
1856 case FIFO_EVENT_APP_RX:
1857 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1858 sid = e->fifo->client_session_index;
1859 session = vcl_session_get (wrk, sid);
1862 if (sid < n_bits && read_map)
1864 clib_bitmap_set_no_check (read_map, sid, 1);
1868 case FIFO_EVENT_APP_TX:
1869 sid = e->fifo->client_session_index;
1870 session = vcl_session_get (wrk, sid);
1873 if (sid < n_bits && write_map)
1875 clib_bitmap_set_no_check (write_map, sid, 1);
1879 case SESSION_IO_EVT_CT_TX:
1880 vcl_fifo_rx_evt_valid_or_break (e->fifo);
1881 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
1884 sid = session->session_index;
1885 if (sid < n_bits && read_map)
1887 clib_bitmap_set_no_check (read_map, sid, 1);
1891 case SESSION_IO_EVT_CT_RX:
1892 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
1895 sid = session->session_index;
1896 if (sid < n_bits && write_map)
1898 clib_bitmap_set_no_check (write_map, sid, 1);
1902 case SESSION_CTRL_EVT_ACCEPTED:
1903 accepted_msg = (session_accepted_msg_t *) e->data;
1904 handle = accepted_msg->listener_handle;
1905 session = vcl_session_table_lookup_listener (wrk, handle);
1908 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
1909 "listener handle %llx", getpid (), handle);
1913 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
1914 vcl_msg->accepted_msg = *accepted_msg;
1915 sid = session->session_index;
1916 if (sid < n_bits && read_map)
1918 clib_bitmap_set_no_check (read_map, sid, 1);
1922 case SESSION_CTRL_EVT_CONNECTED:
1923 connected_msg = (session_connected_msg_t *) e->data;
1924 vcl_session_connected_handler (wrk, connected_msg);
1926 case SESSION_CTRL_EVT_DISCONNECTED:
1927 disconnected_msg = (session_disconnected_msg_t *) e->data;
1928 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
1929 if (sid < n_bits && except_map)
1931 clib_bitmap_set_no_check (except_map, sid, 1);
1935 case SESSION_CTRL_EVT_RESET:
1936 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
1937 if (sid < n_bits && except_map)
1939 clib_bitmap_set_no_check (except_map, sid, 1);
1944 clib_warning ("unhandled: %u", e->event_type);
1950 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
1951 unsigned long n_bits, unsigned long *read_map,
1952 unsigned long *write_map, unsigned long *except_map,
1953 double time_to_wait, u32 * bits_set)
1955 svm_msg_q_msg_t *msg;
1959 svm_msg_q_lock (mq);
1960 if (svm_msg_q_is_empty (mq))
1964 svm_msg_q_unlock (mq);
1970 svm_msg_q_unlock (mq);
1973 else if (time_to_wait < 0)
1975 svm_msg_q_wait (mq);
1979 if (svm_msg_q_timedwait (mq, time_to_wait))
1981 svm_msg_q_unlock (mq);
1986 vcl_mq_dequeue_batch (wrk, mq);
1987 svm_msg_q_unlock (mq);
1989 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
1991 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
1992 e = svm_msg_q_msg_data (mq, msg);
1993 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
1994 except_map, bits_set);
1995 svm_msg_q_free_msg (mq, msg);
1997 vec_reset_length (wrk->mq_msg_vector);
2002 vppcom_select_condvar (vcl_worker_t * wrk, unsigned long n_bits,
2003 unsigned long *read_map, unsigned long *write_map,
2004 unsigned long *except_map, double time_to_wait,
2007 double total_wait = 0, wait_slice;
2008 vcl_cut_through_registration_t *cr;
2010 time_to_wait = (time_to_wait == -1) ? 10e9 : time_to_wait;
2011 wait_slice = wrk->cut_through_registrations ? 10e-6 : time_to_wait;
2014 vcl_ct_registration_lock (wrk);
2016 pool_foreach (cr, wrk->cut_through_registrations, ({
2017 vcl_select_handle_mq (wrk, cr->mq, n_bits, read_map, write_map, except_map,
2021 vcl_ct_registration_unlock (wrk);
2023 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2024 write_map, except_map, time_to_wait, bits_set);
2025 total_wait += wait_slice;
2029 while (total_wait < time_to_wait);
2035 vppcom_select_eventfd (vcl_worker_t * wrk, unsigned long n_bits,
2036 unsigned long *read_map, unsigned long *write_map,
2037 unsigned long *except_map, double time_to_wait,
2040 vcl_mq_evt_conn_t *mqc;
2041 int __clib_unused n_read;
2045 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2046 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2047 vec_len (wrk->mq_events), time_to_wait);
2048 for (i = 0; i < n_mq_evts; i++)
2050 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2051 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2052 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2053 except_map, 0, bits_set);
2056 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2060 vppcom_select (unsigned long n_bits, unsigned long *read_map,
2061 unsigned long *write_map, unsigned long *except_map,
2062 double time_to_wait)
2064 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2065 vcl_worker_t *wrk = vcl_worker_get_current ();
2066 vcl_session_t *session = 0;
2069 ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
2071 if (n_bits && read_map)
2073 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2074 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2075 vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2076 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (clib_bitmap_t));
2078 if (n_bits && write_map)
2080 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2081 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2082 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2083 memset (write_map, 0,
2084 vec_len (wrk->wr_bitmap) * sizeof (clib_bitmap_t));
2086 if (n_bits && except_map)
2088 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2089 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2090 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2091 memset (except_map, 0,
2092 vec_len (wrk->ex_bitmap) * sizeof (clib_bitmap_t));
2102 clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
2103 if (!(session = vcl_session_get (wrk, sid)))
2105 if (except_map && sid < minbits)
2106 clib_bitmap_set_no_check (except_map, sid, 1);
2110 rv = svm_fifo_is_full (session->tx_fifo);
2113 clib_bitmap_set_no_check (write_map, sid, 1);
2122 clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
2123 if (!(session = vcl_session_get (wrk, sid)))
2125 if (except_map && sid < minbits)
2126 clib_bitmap_set_no_check (except_map, sid, 1);
2130 rv = vppcom_session_read_ready (session);
2133 clib_bitmap_set_no_check (read_map, sid, 1);
2141 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2143 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2144 read_map, write_map, except_map, &bits_set);
2146 vec_reset_length (wrk->unhandled_evts_vector);
2148 if (vcm->cfg.use_mq_eventfd)
2149 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2150 time_to_wait, &bits_set);
2152 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2153 time_to_wait, &bits_set);
2159 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
2161 vcl_session_t *session;
2162 vppcom_epoll_t *vep;
2165 if (VPPCOM_DEBUG <= 1)
2168 /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
2169 session = vcl_session_get (wrk, vep_idx);
2170 if (PREDICT_FALSE (!session))
2172 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
2173 getpid (), vep_idx);
2176 if (PREDICT_FALSE (!session->is_vep))
2178 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2179 getpid (), vep_idx);
2182 vep = &session->vep;
2183 clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
2186 " is_vep_session = %u\n"
2187 " next_sid = 0x%x (%u)\n"
2188 " wait_cont_idx = 0x%x (%u)\n"
2189 "}\n", getpid (), vep_idx,
2190 session->is_vep, session->is_vep_session,
2191 vep->next_sh, vep->next_sh,
2192 session->wait_cont_idx, session->wait_cont_idx);
2194 for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
2196 session = vcl_session_get (wrk, sid);
2197 if (PREDICT_FALSE (!session))
2199 clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
2202 if (PREDICT_FALSE (session->is_vep))
2203 clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
2204 getpid (), vep_idx);
2205 else if (PREDICT_FALSE (!session->is_vep_session))
2207 clib_warning ("VCL<%d>: ERROR: session (%u) "
2208 "is not a vep session!", getpid (), sid);
2211 vep = &session->vep;
2212 if (PREDICT_FALSE (vep->vep_sh != vep_idx))
2213 clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
2214 "vep_idx (%u)!", getpid (),
2215 sid, session->vep.vep_sh, vep_idx);
2216 if (session->is_vep_session)
2218 clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
2220 " next_sid = 0x%x (%u)\n"
2221 " prev_sid = 0x%x (%u)\n"
2222 " vep_idx = 0x%x (%u)\n"
2223 " ev.events = 0x%x\n"
2224 " ev.data.u64 = 0x%llx\n"
2228 vep->next_sh, vep->next_sh,
2229 vep->prev_sh, vep->prev_sh,
2230 vep->vep_sh, vep->vep_sh,
2231 vep->ev.events, vep->ev.data.u64, vep->et_mask);
2236 clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
2237 getpid (), vep_idx);
2241 vppcom_epoll_create (void)
2243 vcl_worker_t *wrk = vcl_worker_get_current ();
2244 vcl_session_t *vep_session;
2246 vep_session = vcl_session_alloc (wrk);
2248 vep_session->is_vep = 1;
2249 vep_session->vep.vep_sh = ~0;
2250 vep_session->vep.next_sh = ~0;
2251 vep_session->vep.prev_sh = ~0;
2252 vep_session->wait_cont_idx = ~0;
2253 vep_session->vpp_handle = ~0;
2255 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_sh);
2256 VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!",
2257 getpid (), vep_session->session_index, vep_session->session_index);
2259 return vcl_session_handle (vep_session);
2263 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2264 struct epoll_event *event)
2266 vcl_worker_t *wrk = vcl_worker_get_current ();
2267 vcl_session_t *vep_session;
2268 vcl_session_t *session;
2271 if (vep_handle == session_handle)
2273 clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!",
2274 getpid (), vep_handle);
2275 return VPPCOM_EINVAL;
2278 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2279 if (PREDICT_FALSE (!vep_session))
2281 clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_handle);
2282 return VPPCOM_EBADFD;
2284 if (PREDICT_FALSE (!vep_session->is_vep))
2286 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2287 getpid (), vep_handle);
2288 return VPPCOM_EINVAL;
2291 ASSERT (vep_session->vep.vep_sh == ~0);
2292 ASSERT (vep_session->vep.prev_sh == ~0);
2294 session = vcl_session_get_w_handle (wrk, session_handle);
2295 if (PREDICT_FALSE (!session))
2297 VDBG (0, "VCL<%d>: ERROR: Invalid session_handle (%u)!",
2298 getpid (), session_handle);
2299 return VPPCOM_EBADFD;
2301 if (PREDICT_FALSE (session->is_vep))
2303 clib_warning ("ERROR: session_handle (%u) is a vep!", vep_handle);
2304 return VPPCOM_EINVAL;
2310 if (PREDICT_FALSE (!event))
2312 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to "
2313 "epoll_event structure!", getpid ());
2314 return VPPCOM_EINVAL;
2316 if (vep_session->vep.next_sh != ~0)
2318 vcl_session_t *next_session;
2319 next_session = vcl_session_get_w_handle (wrk,
2320 vep_session->vep.next_sh);
2321 if (PREDICT_FALSE (!next_session))
2323 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid "
2324 "vep.next_sid (%u) on vep_idx (%u)!",
2325 getpid (), vep_session->vep.next_sh, vep_handle);
2326 return VPPCOM_EBADFD;
2328 ASSERT (next_session->vep.prev_sh == vep_handle);
2329 next_session->vep.prev_sh = session_handle;
2331 session->vep.next_sh = vep_session->vep.next_sh;
2332 session->vep.prev_sh = vep_handle;
2333 session->vep.vep_sh = vep_handle;
2334 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2335 session->vep.ev = *event;
2336 session->is_vep = 0;
2337 session->is_vep_session = 1;
2338 vep_session->vep.next_sh = session_handle;
2340 VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x, "
2341 "data 0x%llx!", getpid (), vep_handle, session_handle,
2342 event->events, event->data.u64);
2343 vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
2347 if (PREDICT_FALSE (!event))
2349 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to "
2350 "epoll_event structure!", getpid ());
2354 else if (PREDICT_FALSE (!session->is_vep_session))
2356 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2357 "not a vep session!", getpid (), session_handle);
2361 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2363 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
2364 "vep_idx (%u) != vep_idx (%u)!",
2365 getpid (), session_handle,
2366 session->vep.vep_sh, vep_handle);
2370 session->vep.et_mask = VEP_DEFAULT_ET_MASK;
2371 session->vep.ev = *event;
2372 VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
2373 " data 0x%llx!", getpid (), vep_handle, session_handle,
2374 event->events, event->data.u64);
2378 if (PREDICT_FALSE (!session->is_vep_session))
2380 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2381 "not a vep session!", getpid (), session_handle);
2385 else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
2387 clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
2388 "vep_idx (%u) != vep_idx (%u)!",
2389 getpid (), session_handle,
2390 session->vep.vep_sh, vep_handle);
2395 vep_session->wait_cont_idx =
2396 (vep_session->wait_cont_idx == session_handle) ?
2397 session->vep.next_sh : vep_session->wait_cont_idx;
2399 if (session->vep.prev_sh == vep_handle)
2400 vep_session->vep.next_sh = session->vep.next_sh;
2403 vcl_session_t *prev_session;
2404 prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
2405 if (PREDICT_FALSE (!prev_session))
2407 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2408 "vep.prev_sid (%u) on sid (%u)!",
2409 getpid (), session->vep.prev_sh, session_handle);
2410 return VPPCOM_EBADFD;
2412 ASSERT (prev_session->vep.next_sh == session_handle);
2413 prev_session->vep.next_sh = session->vep.next_sh;
2415 if (session->vep.next_sh != ~0)
2417 vcl_session_t *next_session;
2418 next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
2419 if (PREDICT_FALSE (!next_session))
2421 clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
2422 "vep.next_sid (%u) on sid (%u)!",
2423 getpid (), session->vep.next_sh, session_handle);
2424 return VPPCOM_EBADFD;
2426 ASSERT (next_session->vep.prev_sh == session_handle);
2427 next_session->vep.prev_sh = session->vep.prev_sh;
2430 memset (&session->vep, 0, sizeof (session->vep));
2431 session->vep.next_sh = ~0;
2432 session->vep.prev_sh = ~0;
2433 session->vep.vep_sh = ~0;
2434 session->is_vep_session = 0;
2435 VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!",
2436 getpid (), vep_handle, session_handle);
2437 vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
2441 clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op);
2445 vep_verify_epoll_chain (wrk, vep_handle);
2452 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2453 struct epoll_event *events, u32 * num_ev)
2455 session_disconnected_msg_t *disconnected_msg;
2456 session_connected_msg_t *connected_msg;
2457 session_accepted_msg_t *accepted_msg;
2458 u64 session_evt_data = ~0, handle;
2459 u32 sid = ~0, session_events;
2460 vcl_session_msg_t *vcl_msg;
2461 vcl_session_t *session;
2464 switch (e->event_type)
2466 case FIFO_EVENT_APP_RX:
2467 ASSERT (e->fifo->client_thread_index == vcl_get_worker_index ());
2468 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2469 sid = e->fifo->client_session_index;
2470 session = vcl_session_get (wrk, sid);
2471 session_events = session->vep.ev.events;
2472 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2475 events[*num_ev].events |= EPOLLIN;
2476 session_evt_data = session->vep.ev.data.u64;
2477 session->has_rx_evt = 1;
2479 case FIFO_EVENT_APP_TX:
2480 sid = e->fifo->client_session_index;
2481 session = vcl_session_get (wrk, sid);
2482 session_events = session->vep.ev.events;
2483 if (!(EPOLLOUT & session_events))
2486 events[*num_ev].events |= EPOLLOUT;
2487 session_evt_data = session->vep.ev.data.u64;
2489 case SESSION_IO_EVT_CT_TX:
2490 vcl_fifo_rx_evt_valid_or_break (e->fifo);
2491 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 0);
2492 sid = session->session_index;
2493 session_events = session->vep.ev.events;
2494 if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
2497 events[*num_ev].events |= EPOLLIN;
2498 session_evt_data = session->vep.ev.data.u64;
2499 session->has_rx_evt = 1;
2501 case SESSION_IO_EVT_CT_RX:
2502 session = vcl_ct_session_get_from_fifo (wrk, e->fifo, 1);
2503 sid = session->session_index;
2504 session_events = session->vep.ev.events;
2505 if (!(EPOLLOUT & session_events))
2508 events[*num_ev].events |= EPOLLOUT;
2509 session_evt_data = session->vep.ev.data.u64;
2511 case SESSION_CTRL_EVT_ACCEPTED:
2512 accepted_msg = (session_accepted_msg_t *) e->data;
2513 handle = accepted_msg->listener_handle;
2514 session = vcl_session_table_lookup_listener (wrk, handle);
2517 clib_warning ("VCL<%d>: ERROR: couldn't find listen session:"
2518 "listener handle %llx", getpid (), handle);
2522 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
2523 vcl_msg->accepted_msg = *accepted_msg;
2524 session_events = session->vep.ev.events;
2525 if (!(EPOLLIN & session_events))
2529 events[*num_ev].events |= EPOLLIN;
2530 session_evt_data = session->vep.ev.data.u64;
2532 case SESSION_CTRL_EVT_CONNECTED:
2533 connected_msg = (session_connected_msg_t *) e->data;
2534 vcl_session_connected_handler (wrk, connected_msg);
2535 /* Generate EPOLLOUT because there's no connected event */
2536 sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
2537 session = vcl_session_get (wrk, sid);
2538 session_events = session->vep.ev.events;
2539 if (EPOLLOUT & session_events)
2542 events[*num_ev].events |= EPOLLOUT;
2543 session_evt_data = session->vep.ev.data.u64;
2546 case SESSION_CTRL_EVT_DISCONNECTED:
2547 disconnected_msg = (session_disconnected_msg_t *) e->data;
2548 sid = vcl_session_index_from_vpp_handle (wrk, disconnected_msg->handle);
2549 if (!(session = vcl_session_get (wrk, sid)))
2552 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2553 session_evt_data = session->vep.ev.data.u64;
2554 session_events = session->vep.ev.events;
2556 case SESSION_CTRL_EVT_RESET:
2557 sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2558 if (!(session = vcl_session_get (wrk, sid)))
2561 events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
2562 session_evt_data = session->vep.ev.data.u64;
2563 session_events = session->vep.ev.events;
2566 VDBG (0, "unhandled: %u", e->event_type);
2572 events[*num_ev].data.u64 = session_evt_data;
2573 if (EPOLLONESHOT & session_events)
2575 session = vcl_session_get (wrk, sid);
2576 session->vep.ev.events = 0;
2583 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2584 struct epoll_event *events, u32 maxevents,
2585 double wait_for_time, u32 * num_ev)
2587 svm_msg_q_msg_t *msg;
2591 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
2592 goto handle_dequeued;
2594 svm_msg_q_lock (mq);
2595 if (svm_msg_q_is_empty (mq))
2599 svm_msg_q_unlock (mq);
2602 else if (wait_for_time < 0)
2604 svm_msg_q_wait (mq);
2608 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
2610 svm_msg_q_unlock (mq);
2615 vcl_mq_dequeue_batch (wrk, mq);
2616 svm_msg_q_unlock (mq);
2619 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2621 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2622 e = svm_msg_q_msg_data (mq, msg);
2623 if (*num_ev < maxevents)
2624 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
2626 vec_add1 (wrk->unhandled_evts_vector, *e);
2627 svm_msg_q_free_msg (mq, msg);
2629 vec_reset_length (wrk->mq_msg_vector);
2635 vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
2636 int maxevents, u32 n_evts, double wait_for_time)
2638 vcl_cut_through_registration_t *cr;
2639 double total_wait = 0, wait_slice;
2642 wait_for_time = (wait_for_time == -1) ? (double) 10e9 : wait_for_time;
2643 wait_slice = wrk->cut_through_registrations ? 10e-6 : wait_for_time;
2647 vcl_ct_registration_lock (wrk);
2649 pool_foreach (cr, wrk->cut_through_registrations, ({
2650 vcl_epoll_wait_handle_mq (wrk, cr->mq, events, maxevents, 0, &n_evts);
2653 vcl_ct_registration_unlock (wrk);
2655 rv = vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events,
2656 maxevents, n_evts ? 0 : wait_slice,
2659 total_wait += wait_slice;
2663 while (total_wait < wait_for_time);
2668 vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
2669 int maxevents, u32 n_evts, double wait_for_time)
2671 vcl_mq_evt_conn_t *mqc;
2672 int __clib_unused n_read;
2676 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2678 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2679 vec_len (wrk->mq_events), wait_for_time);
2680 for (i = 0; i < n_mq_evts; i++)
2682 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2683 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2684 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
2686 if (!n_evts && n_mq_evts > 0)
2689 return (int) n_evts;
2693 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
2694 int maxevents, double wait_for_time)
2696 vcl_worker_t *wrk = vcl_worker_get_current ();
2697 vcl_session_t *vep_session;
2701 if (PREDICT_FALSE (maxevents <= 0))
2703 clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
2704 getpid (), maxevents);
2705 return VPPCOM_EINVAL;
2708 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2710 return VPPCOM_EBADFD;
2712 if (PREDICT_FALSE (!vep_session->is_vep))
2714 clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
2715 getpid (), vep_handle);
2716 return VPPCOM_EINVAL;
2719 memset (events, 0, sizeof (*events) * maxevents);
2721 if (vec_len (wrk->unhandled_evts_vector))
2723 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2725 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
2727 if (n_evts == maxevents)
2734 vec_delete (wrk->unhandled_evts_vector, i, 0);
2737 if (vcm->cfg.use_mq_eventfd)
2738 return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
2741 return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
2746 vppcom_session_attr (uint32_t session_handle, uint32_t op,
2747 void *buffer, uint32_t * buflen)
2749 vcl_worker_t *wrk = vcl_worker_get_current ();
2750 vcl_session_t *session;
2752 u32 *flags = buffer;
2753 vppcom_endpt_t *ep = buffer;
2755 session = vcl_session_get_w_handle (wrk, session_handle);
2757 return VPPCOM_EBADFD;
2761 case VPPCOM_ATTR_GET_NREAD:
2762 rv = vppcom_session_read_ready (session);
2763 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
2767 case VPPCOM_ATTR_GET_NWRITE:
2768 rv = vppcom_session_write_ready (session);
2769 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
2770 getpid (), session_handle, rv);
2773 case VPPCOM_ATTR_GET_FLAGS:
2774 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
2776 *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
2777 VCL_SESS_ATTR_NONBLOCK));
2778 *buflen = sizeof (*flags);
2779 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
2780 "is_nonblocking = %u", getpid (),
2781 session_handle, *flags,
2782 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2788 case VPPCOM_ATTR_SET_FLAGS:
2789 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
2791 if (*flags & O_NONBLOCK)
2792 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
2794 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
2796 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
2797 " is_nonblocking = %u",
2798 getpid (), session_handle, *flags,
2799 VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
2805 case VPPCOM_ATTR_GET_PEER_ADDR:
2806 if (PREDICT_TRUE (buffer && buflen &&
2807 (*buflen >= sizeof (*ep)) && ep->ip))
2809 ep->is_ip4 = session->transport.is_ip4;
2810 ep->port = session->transport.rmt_port;
2811 if (session->transport.is_ip4)
2812 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
2813 sizeof (ip4_address_t));
2815 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
2816 sizeof (ip6_address_t));
2817 *buflen = sizeof (*ep);
2818 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
2819 "addr = %U, port %u", getpid (),
2820 session_handle, ep->is_ip4, format_ip46_address,
2821 &session->transport.rmt_ip,
2822 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2823 clib_net_to_host_u16 (ep->port));
2829 case VPPCOM_ATTR_GET_LCL_ADDR:
2830 if (PREDICT_TRUE (buffer && buflen &&
2831 (*buflen >= sizeof (*ep)) && ep->ip))
2833 ep->is_ip4 = session->transport.is_ip4;
2834 ep->port = session->transport.lcl_port;
2835 if (session->transport.is_ip4)
2836 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
2837 sizeof (ip4_address_t));
2839 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
2840 sizeof (ip6_address_t));
2841 *buflen = sizeof (*ep);
2842 VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
2843 " addr = %U port %d", getpid (),
2844 session_handle, ep->is_ip4, format_ip46_address,
2845 &session->transport.lcl_ip,
2846 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
2847 clib_net_to_host_u16 (ep->port));
2853 case VPPCOM_ATTR_GET_LIBC_EPFD:
2854 rv = session->libc_epfd;
2855 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
2859 case VPPCOM_ATTR_SET_LIBC_EPFD:
2860 if (PREDICT_TRUE (buffer && buflen &&
2861 (*buflen == sizeof (session->libc_epfd))))
2863 session->libc_epfd = *(int *) buffer;
2864 *buflen = sizeof (session->libc_epfd);
2866 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
2867 "buflen %d", getpid (), session->libc_epfd, *buflen);
2873 case VPPCOM_ATTR_GET_PROTOCOL:
2874 if (buffer && buflen && (*buflen >= sizeof (int)))
2876 *(int *) buffer = session->session_type;
2877 *buflen = sizeof (int);
2879 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
2880 getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
2887 case VPPCOM_ATTR_GET_LISTEN:
2888 if (buffer && buflen && (*buflen >= sizeof (int)))
2890 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2891 VCL_SESS_ATTR_LISTEN);
2892 *buflen = sizeof (int);
2894 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
2895 getpid (), *(int *) buffer, *buflen);
2901 case VPPCOM_ATTR_GET_ERROR:
2902 if (buffer && buflen && (*buflen >= sizeof (int)))
2904 *(int *) buffer = 0;
2905 *buflen = sizeof (int);
2907 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
2908 getpid (), *(int *) buffer, *buflen);
2914 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
2915 if (buffer && buflen && (*buflen >= sizeof (u32)))
2919 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
2920 session->tx_fifo ? session->tx_fifo->nitems :
2921 vcm->cfg.tx_fifo_size);
2922 *buflen = sizeof (u32);
2924 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
2925 "buflen %d, #VPP-TBD#", getpid (),
2926 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2932 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
2933 if (buffer && buflen && (*buflen == sizeof (u32)))
2936 session->sndbuf_size = *(u32 *) buffer;
2937 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
2938 "buflen %d, #VPP-TBD#", getpid (),
2939 session->sndbuf_size, session->sndbuf_size, *buflen);
2945 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
2946 if (buffer && buflen && (*buflen >= sizeof (u32)))
2950 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
2951 session->rx_fifo ? session->rx_fifo->nitems :
2952 vcm->cfg.rx_fifo_size);
2953 *buflen = sizeof (u32);
2955 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
2956 "buflen %d, #VPP-TBD#", getpid (),
2957 *(size_t *) buffer, *(size_t *) buffer, *buflen);
2963 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
2964 if (buffer && buflen && (*buflen == sizeof (u32)))
2967 session->rcvbuf_size = *(u32 *) buffer;
2968 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
2969 "buflen %d, #VPP-TBD#", getpid (),
2970 session->sndbuf_size, session->sndbuf_size, *buflen);
2976 case VPPCOM_ATTR_GET_REUSEADDR:
2977 if (buffer && buflen && (*buflen >= sizeof (int)))
2980 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
2981 VCL_SESS_ATTR_REUSEADDR);
2982 *buflen = sizeof (int);
2984 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
2985 "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
2991 case VPPCOM_ATTR_SET_REUSEADDR:
2992 if (buffer && buflen && (*buflen == sizeof (int)) &&
2993 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
2996 if (*(int *) buffer)
2997 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
2999 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
3001 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
3002 " #VPP-TBD#", getpid (),
3003 VCL_SESS_ATTR_TEST (session->attr,
3004 VCL_SESS_ATTR_REUSEADDR), *buflen);
3010 case VPPCOM_ATTR_GET_REUSEPORT:
3011 if (buffer && buflen && (*buflen >= sizeof (int)))
3014 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3015 VCL_SESS_ATTR_REUSEPORT);
3016 *buflen = sizeof (int);
3018 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
3019 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3025 case VPPCOM_ATTR_SET_REUSEPORT:
3026 if (buffer && buflen && (*buflen == sizeof (int)) &&
3027 !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
3030 if (*(int *) buffer)
3031 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
3033 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
3035 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
3036 " #VPP-TBD#", getpid (),
3037 VCL_SESS_ATTR_TEST (session->attr,
3038 VCL_SESS_ATTR_REUSEPORT), *buflen);
3044 case VPPCOM_ATTR_GET_BROADCAST:
3045 if (buffer && buflen && (*buflen >= sizeof (int)))
3048 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3049 VCL_SESS_ATTR_BROADCAST);
3050 *buflen = sizeof (int);
3052 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
3053 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3059 case VPPCOM_ATTR_SET_BROADCAST:
3060 if (buffer && buflen && (*buflen == sizeof (int)))
3063 if (*(int *) buffer)
3064 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
3066 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
3068 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
3069 "#VPP-TBD#", getpid (),
3070 VCL_SESS_ATTR_TEST (session->attr,
3071 VCL_SESS_ATTR_BROADCAST), *buflen);
3077 case VPPCOM_ATTR_GET_V6ONLY:
3078 if (buffer && buflen && (*buflen >= sizeof (int)))
3081 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3082 VCL_SESS_ATTR_V6ONLY);
3083 *buflen = sizeof (int);
3085 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
3086 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3092 case VPPCOM_ATTR_SET_V6ONLY:
3093 if (buffer && buflen && (*buflen == sizeof (int)))
3096 if (*(int *) buffer)
3097 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
3099 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
3101 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
3102 "#VPP-TBD#", getpid (),
3103 VCL_SESS_ATTR_TEST (session->attr,
3104 VCL_SESS_ATTR_V6ONLY), *buflen);
3110 case VPPCOM_ATTR_GET_KEEPALIVE:
3111 if (buffer && buflen && (*buflen >= sizeof (int)))
3114 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3115 VCL_SESS_ATTR_KEEPALIVE);
3116 *buflen = sizeof (int);
3118 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
3119 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3125 case VPPCOM_ATTR_SET_KEEPALIVE:
3126 if (buffer && buflen && (*buflen == sizeof (int)))
3129 if (*(int *) buffer)
3130 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3132 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
3134 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
3135 "#VPP-TBD#", getpid (),
3136 VCL_SESS_ATTR_TEST (session->attr,
3137 VCL_SESS_ATTR_KEEPALIVE), *buflen);
3143 case VPPCOM_ATTR_GET_TCP_NODELAY:
3144 if (buffer && buflen && (*buflen >= sizeof (int)))
3147 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3148 VCL_SESS_ATTR_TCP_NODELAY);
3149 *buflen = sizeof (int);
3151 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
3152 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3158 case VPPCOM_ATTR_SET_TCP_NODELAY:
3159 if (buffer && buflen && (*buflen == sizeof (int)))
3162 if (*(int *) buffer)
3163 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3165 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
3167 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
3168 "#VPP-TBD#", getpid (),
3169 VCL_SESS_ATTR_TEST (session->attr,
3170 VCL_SESS_ATTR_TCP_NODELAY), *buflen);
3176 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
3177 if (buffer && buflen && (*buflen >= sizeof (int)))
3180 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3181 VCL_SESS_ATTR_TCP_KEEPIDLE);
3182 *buflen = sizeof (int);
3184 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
3185 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3191 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
3192 if (buffer && buflen && (*buflen == sizeof (int)))
3195 if (*(int *) buffer)
3196 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3198 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
3200 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
3201 "#VPP-TBD#", getpid (),
3202 VCL_SESS_ATTR_TEST (session->attr,
3203 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
3209 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
3210 if (buffer && buflen && (*buflen >= sizeof (int)))
3213 *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
3214 VCL_SESS_ATTR_TCP_KEEPINTVL);
3215 *buflen = sizeof (int);
3217 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
3218 "#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3224 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
3225 if (buffer && buflen && (*buflen == sizeof (int)))
3228 if (*(int *) buffer)
3229 VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3231 VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
3233 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
3234 "#VPP-TBD#", getpid (),
3235 VCL_SESS_ATTR_TEST (session->attr,
3236 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
3242 case VPPCOM_ATTR_GET_TCP_USER_MSS:
3243 if (buffer && buflen && (*buflen >= sizeof (u32)))
3246 *(u32 *) buffer = session->user_mss;
3247 *buflen = sizeof (int);
3249 VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
3250 " #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
3256 case VPPCOM_ATTR_SET_TCP_USER_MSS:
3257 if (buffer && buflen && (*buflen == sizeof (u32)))
3260 session->user_mss = *(u32 *) buffer;
3262 VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
3263 "#VPP-TBD#", getpid (), session->user_mss, *buflen);
3269 case VPPCOM_ATTR_GET_REFCNT:
3270 rv = vcl_session_get_refcnt (session);
3282 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
3283 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3285 vcl_worker_t *wrk = vcl_worker_get_current ();
3287 vcl_session_t *session = 0;
3291 session = vcl_session_get_w_handle (wrk, session_handle);
3292 if (PREDICT_FALSE (!session))
3294 VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
3295 getpid (), session_handle);
3296 return VPPCOM_EBADFD;
3298 ep->is_ip4 = session->transport.is_ip4;
3299 ep->port = session->transport.rmt_port;
3303 rv = vppcom_session_read (session_handle, buffer, buflen);
3304 else if (flags & MSG_PEEK)
3305 rv = vppcom_session_peek (session_handle, buffer, buflen);
3308 clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d",
3310 return VPPCOM_EAFNOSUPPORT;
3315 if (session->transport.is_ip4)
3316 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3317 sizeof (ip4_address_t));
3319 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3320 sizeof (ip6_address_t));
3327 vppcom_session_sendto (uint32_t session_handle, void *buffer,
3328 uint32_t buflen, int flags, vppcom_endpt_t * ep)
3331 return VPPCOM_EINVAL;
3336 return VPPCOM_EINVAL;
3341 // TBD check the flags and do the right thing
3342 VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
3343 getpid (), flags, flags);
3346 return (vppcom_session_write_inline (session_handle, buffer, buflen, 1));
3350 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
3352 vcl_worker_t *wrk = vcl_worker_get_current ();
3353 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
3354 u32 i, keep_trying = 1;
3355 svm_msg_q_msg_t msg;
3359 VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
3360 getpid (), vp, n_sids, wait_for_time);
3363 return VPPCOM_EFAULT;
3367 vcl_session_t *session;
3369 /* Dequeue all events and drop all unhandled io events */
3370 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
3372 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
3373 vcl_handle_mq_event (wrk, e);
3374 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
3376 vec_reset_length (wrk->unhandled_evts_vector);
3378 for (i = 0; i < n_sids; i++)
3380 session = vcl_session_get (wrk, vp[i].sid);
3383 vp[i].revents = POLLHUP;
3390 if (POLLIN & vp[i].events)
3392 rv = vppcom_session_read_ready (session);
3395 vp[i].revents |= POLLIN;
3402 case VPPCOM_ECONNRESET:
3403 vp[i].revents = POLLHUP;
3407 vp[i].revents = POLLERR;
3414 if (POLLOUT & vp[i].events)
3416 rv = vppcom_session_write_ready (session);
3419 vp[i].revents |= POLLOUT;
3426 case VPPCOM_ECONNRESET:
3427 vp[i].revents = POLLHUP;
3431 vp[i].revents = POLLERR;
3438 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
3440 vp[i].revents = POLLNVAL;
3444 if (wait_for_time != -1)
3445 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
3447 while ((num_ev == 0) && keep_trying);
3449 if (VPPCOM_DEBUG > 3)
3451 clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
3452 for (i = 0; i < n_sids; i++)
3454 clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
3455 ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
3456 vp[i].events, vp[i].revents);
3463 vppcom_mq_epoll_fd (void)
3465 vcl_worker_t *wrk = vcl_worker_get_current ();
3466 return wrk->mqs_epfd;
3470 vppcom_session_index (uint32_t session_handle)
3472 return session_handle & 0xFFFFFF;
3476 vppcom_session_handle (uint32_t session_index)
3478 return (vcl_get_worker_index () << 24) | session_index;
3482 vppcom_worker_register (void)
3484 if (!vcl_worker_alloc_and_init ())
3485 return VPPCOM_EEXIST;
3487 if (vcl_worker_set_bapi ())
3488 return VPPCOM_EEXIST;
3490 if (vcl_worker_register_with_vpp ())
3491 return VPPCOM_EEXIST;
3497 vppcom_worker_index (void)
3499 return vcl_get_worker_index ();
3503 * fd.io coding-style-patch-verification: ON
3506 * eval: (c-set-style "gnu")