2 * Copyright (c) 2017-2019 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 <vcl/vppcom.h>
19 #include <vcl/vcl_debug.h>
20 #include <vcl/vcl_private.h>
21 #include <svm/fifo_segment.h>
23 __thread uword __vcl_worker_index = ~0;
26 vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq, u32 n_max_msg)
28 u32 n_msgs = 0, sz, len;
30 while ((sz = svm_msg_q_size (mq)))
32 len = vec_len (wrk->mq_msg_vector);
33 vec_validate (wrk->mq_msg_vector, len + sz - 1);
34 svm_msg_q_sub_raw_batch (mq, wrk->mq_msg_vector + len, sz);
43 vcl_msg_add_ext_config (vcl_session_t *s, uword *offset)
47 c = vcl_segment_alloc_chunk (vcl_vpp_worker_segment_handle (0),
48 0 /* one slice only */, s->ext_config->len,
51 clib_memcpy_fast (c->data, s->ext_config, s->ext_config->len);
55 vcl_send_session_listen (vcl_worker_t *wrk, vcl_session_t *s)
57 app_session_evt_t _app_evt, *app_evt = &_app_evt;
58 session_listen_msg_t *mp;
61 mq = vcl_worker_ctrl_mq (wrk);
62 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_LISTEN);
63 mp = (session_listen_msg_t *) app_evt->evt->data;
64 memset (mp, 0, sizeof (*mp));
65 mp->client_index = wrk->api_client_handle;
66 mp->context = s->session_index;
67 mp->wrk_index = wrk->vpp_wrk_index;
68 mp->is_ip4 = s->transport.is_ip4;
69 clib_memcpy_fast (&mp->ip, &s->transport.lcl_ip, sizeof (mp->ip));
70 mp->port = s->transport.lcl_port;
71 mp->proto = s->session_type;
73 if (s->flags & VCL_SESSION_F_CONNECTED)
74 mp->flags = TRANSPORT_CFG_F_CONNECTED;
76 vcl_msg_add_ext_config (s, &mp->ext_config);
77 app_send_ctrl_evt_to_vpp (mq, app_evt);
80 clib_mem_free (s->ext_config);
83 s->flags |= VCL_SESSION_F_PENDING_LISTEN;
87 vcl_send_session_connect (vcl_worker_t * wrk, vcl_session_t * s)
89 app_session_evt_t _app_evt, *app_evt = &_app_evt;
90 session_connect_msg_t *mp;
93 mq = vcl_worker_ctrl_mq (wrk);
94 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_CONNECT);
95 mp = (session_connect_msg_t *) app_evt->evt->data;
96 memset (mp, 0, sizeof (*mp));
97 mp->client_index = wrk->api_client_handle;
98 mp->context = s->session_index;
100 mp->wrk_index = wrk->vpp_wrk_index;
101 mp->is_ip4 = s->transport.is_ip4;
102 mp->parent_handle = s->parent_handle;
103 clib_memcpy_fast (&mp->ip, &s->transport.rmt_ip, sizeof (mp->ip));
104 clib_memcpy_fast (&mp->lcl_ip, &s->transport.lcl_ip, sizeof (mp->lcl_ip));
105 mp->port = s->transport.rmt_port;
106 mp->lcl_port = s->transport.lcl_port;
107 mp->proto = s->session_type;
109 if (s->flags & VCL_SESSION_F_CONNECTED)
110 mp->flags |= TRANSPORT_CFG_F_CONNECTED;
112 vcl_msg_add_ext_config (s, &mp->ext_config);
113 app_send_ctrl_evt_to_vpp (mq, app_evt);
117 clib_mem_free (s->ext_config);
123 vcl_send_session_unlisten (vcl_worker_t * wrk, vcl_session_t * s)
125 app_session_evt_t _app_evt, *app_evt = &_app_evt;
126 session_unlisten_msg_t *mp;
129 mq = vcl_worker_ctrl_mq (wrk);
130 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_UNLISTEN);
131 mp = (session_unlisten_msg_t *) app_evt->evt->data;
132 memset (mp, 0, sizeof (*mp));
133 mp->client_index = wrk->api_client_handle;
134 mp->wrk_index = wrk->vpp_wrk_index;
135 mp->handle = s->vpp_handle;
136 mp->context = wrk->wrk_index;
137 app_send_ctrl_evt_to_vpp (mq, app_evt);
141 vcl_send_session_shutdown (vcl_worker_t *wrk, vcl_session_t *s)
143 app_session_evt_t _app_evt, *app_evt = &_app_evt;
144 session_shutdown_msg_t *mp;
147 /* Send to thread that owns the session */
149 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_SHUTDOWN);
150 mp = (session_shutdown_msg_t *) app_evt->evt->data;
151 memset (mp, 0, sizeof (*mp));
152 mp->client_index = wrk->api_client_handle;
153 mp->handle = s->vpp_handle;
154 app_send_ctrl_evt_to_vpp (mq, app_evt);
158 vcl_send_session_disconnect (vcl_worker_t * wrk, vcl_session_t * s)
160 app_session_evt_t _app_evt, *app_evt = &_app_evt;
161 session_disconnect_msg_t *mp;
164 /* Send to thread that owns the session */
166 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_DISCONNECT);
167 mp = (session_disconnect_msg_t *) app_evt->evt->data;
168 memset (mp, 0, sizeof (*mp));
169 mp->client_index = wrk->api_client_handle;
170 mp->handle = s->vpp_handle;
171 app_send_ctrl_evt_to_vpp (mq, app_evt);
175 vcl_send_app_detach (vcl_worker_t * wrk)
177 app_session_evt_t _app_evt, *app_evt = &_app_evt;
178 session_app_detach_msg_t *mp;
181 mq = vcl_worker_ctrl_mq (wrk);
182 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_APP_DETACH);
183 mp = (session_app_detach_msg_t *) app_evt->evt->data;
184 memset (mp, 0, sizeof (*mp));
185 mp->client_index = wrk->api_client_handle;
186 app_send_ctrl_evt_to_vpp (mq, app_evt);
190 vcl_send_session_accepted_reply (svm_msg_q_t * mq, u32 context,
191 session_handle_t handle, int retval)
193 app_session_evt_t _app_evt, *app_evt = &_app_evt;
194 session_accepted_reply_msg_t *rmp;
195 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_ACCEPTED_REPLY);
196 rmp = (session_accepted_reply_msg_t *) app_evt->evt->data;
197 rmp->handle = handle;
198 rmp->context = context;
199 rmp->retval = retval;
200 app_send_ctrl_evt_to_vpp (mq, app_evt);
204 vcl_send_session_disconnected_reply (vcl_worker_t * wrk, vcl_session_t * s,
207 app_session_evt_t _app_evt, *app_evt = &_app_evt;
208 session_disconnected_reply_msg_t *rmp;
209 app_alloc_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt,
210 SESSION_CTRL_EVT_DISCONNECTED_REPLY);
211 rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
212 rmp->handle = s->vpp_handle;
213 rmp->context = wrk->api_client_handle;
214 rmp->retval = retval;
215 app_send_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt);
219 vcl_send_session_reset_reply (vcl_worker_t * wrk, vcl_session_t * s,
222 app_session_evt_t _app_evt, *app_evt = &_app_evt;
223 session_reset_reply_msg_t *rmp;
224 app_alloc_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt,
225 SESSION_CTRL_EVT_RESET_REPLY);
226 rmp = (session_reset_reply_msg_t *) app_evt->evt->data;
227 rmp->handle = s->vpp_handle;
228 rmp->context = wrk->api_client_handle;
229 rmp->retval = retval;
230 app_send_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt);
234 vcl_send_session_worker_update (vcl_worker_t * wrk, vcl_session_t * s,
237 app_session_evt_t _app_evt, *app_evt = &_app_evt;
238 session_worker_update_msg_t *mp;
240 app_alloc_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt,
241 SESSION_CTRL_EVT_WORKER_UPDATE);
242 mp = (session_worker_update_msg_t *) app_evt->evt->data;
243 mp->client_index = wrk->api_client_handle;
244 mp->handle = s->vpp_handle;
245 mp->req_wrk_index = wrk->vpp_wrk_index;
246 mp->wrk_index = wrk_index;
247 app_send_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt);
251 vcl_send_worker_rpc (u32 dst_wrk_index, void *data, u32 data_len)
253 app_session_evt_t _app_evt, *app_evt = &_app_evt;
254 session_app_wrk_rpc_msg_t *mp;
255 vcl_worker_t *dst_wrk, *wrk;
259 if (data_len > sizeof (mp->data))
262 clib_spinlock_lock (&vcm->workers_lock);
264 dst_wrk = vcl_worker_get_if_valid (dst_wrk_index);
268 wrk = vcl_worker_get_current ();
269 mq = vcl_worker_ctrl_mq (wrk);
270 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_APP_WRK_RPC);
271 mp = (session_app_wrk_rpc_msg_t *) app_evt->evt->data;
272 mp->client_index = wrk->api_client_handle;
273 mp->wrk_index = dst_wrk->vpp_wrk_index;
274 clib_memcpy (mp->data, data, data_len);
275 app_send_ctrl_evt_to_vpp (mq, app_evt);
279 clib_spinlock_unlock (&vcm->workers_lock);
284 vcl_session_transport_attr (vcl_worker_t *wrk, vcl_session_t *s, u8 is_get,
285 transport_endpt_attr_t *attr)
287 app_session_evt_t _app_evt, *app_evt = &_app_evt;
288 session_transport_attr_msg_t *mp;
292 ASSERT (!wrk->session_attr_op);
294 if (PREDICT_FALSE (!mq))
296 /* FIXME: attribute should be stored and sent once session is
297 * bound/connected to vpp */
301 wrk->session_attr_op = 1;
302 wrk->session_attr_op_rv = -1;
304 app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_TRANSPORT_ATTR);
305 mp = (session_transport_attr_msg_t *) app_evt->evt->data;
306 memset (mp, 0, sizeof (*mp));
307 mp->client_index = wrk->api_client_handle;
308 mp->handle = s->vpp_handle;
311 app_send_ctrl_evt_to_vpp (mq, app_evt);
313 timeout = clib_time_now (&wrk->clib_time) + 1;
315 while (wrk->session_attr_op && clib_time_now (&wrk->clib_time) < timeout)
316 vcl_flush_mq_events ();
318 if (!wrk->session_attr_op_rv && is_get)
319 *attr = wrk->session_attr_rv;
321 wrk->session_attr_op = 0;
323 return wrk->session_attr_op_rv;
327 vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp,
330 vcl_session_t *session, *listen_session;
333 session = vcl_session_alloc (wrk);
335 listen_session = vcl_session_get (wrk, ls_index);
336 if (listen_session->vpp_handle != mp->listener_handle)
338 VDBG (0, "ERROR: listener handle %lu does not match session %u",
339 mp->listener_handle, ls_index);
343 if (vcl_segment_attach_session (
344 mp->segment_handle, mp->server_rx_fifo, mp->server_tx_fifo,
345 mp->vpp_event_queue_address, mp->mq_index, 0, session))
347 VDBG (0, "session %u [0x%llx]: failed to attach fifos",
348 session->session_index, mp->handle);
352 session->vpp_handle = mp->handle;
353 session->session_state = VCL_STATE_READY;
356 session->original_dst_ip4 = mp->original_dst_ip4;
357 session->original_dst_port = mp->original_dst_port;
359 session->transport.rmt_port = mp->rmt.port;
360 session->transport.is_ip4 = mp->rmt.is_ip4;
361 clib_memcpy_fast (&session->transport.rmt_ip, &mp->rmt.ip,
362 sizeof (ip46_address_t));
364 vcl_session_table_add_vpp_handle (wrk, mp->handle, session->session_index);
365 session->transport.lcl_port = mp->lcl.port;
366 session->transport.lcl_ip = mp->lcl.ip;
367 session->session_type = listen_session->session_type;
368 session->is_dgram = vcl_proto_is_dgram (session->session_type);
369 if (session->is_dgram)
370 session->flags |= (listen_session->flags & VCL_SESSION_F_CONNECTED);
371 session->listener_index = listen_session->session_index;
372 listen_session->n_accepted_sessions++;
374 vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index);
376 vcl_send_session_accepted_reply (session->vpp_evt_q, mp->context,
377 session->vpp_handle, 0);
379 return session->session_index;
382 vcl_segment_attach_mq (vcl_vpp_worker_segment_handle (0),
383 mp->vpp_event_queue_address, mp->mq_index, &evt_q);
384 vcl_send_session_accepted_reply (evt_q, mp->context, mp->handle,
385 VNET_API_ERROR_INVALID_ARGUMENT);
386 vcl_session_free (wrk, session);
387 return VCL_INVALID_SESSION_INDEX;
391 vcl_session_connected_handler (vcl_worker_t * wrk,
392 session_connected_msg_t * mp)
394 vcl_session_t *session = 0;
397 session_index = mp->context;
398 session = vcl_session_get (wrk, session_index);
399 if (PREDICT_FALSE (!session))
401 VERR ("vpp handle 0x%llx has no session index (%u)!", mp->handle,
403 /* Should not happen but if it does, force vpp session cleanup */
404 vcl_session_t tmp_session = {
405 .vpp_handle = mp->handle,
408 vcl_segment_attach_session (
409 mp->segment_handle, mp->server_rx_fifo, mp->server_tx_fifo,
410 mp->vpp_event_queue_address, mp->mq_index, 0, session);
411 if (tmp_session.vpp_evt_q)
412 vcl_send_session_disconnect (wrk, &tmp_session);
413 return VCL_INVALID_SESSION_INDEX;
418 VDBG (0, "session %u: connect failed! %U", session_index,
419 format_session_error, mp->retval);
420 session->session_state = VCL_STATE_DETACHED;
421 session->vpp_handle = VCL_INVALID_SESSION_HANDLE;
422 session->vpp_error = mp->retval;
423 return session_index;
426 session->vpp_handle = mp->handle;
428 /* Add to lookup table. Even if something fails, session cannot be
429 * cleaned up prior to notifying vpp and going through the cleanup
430 * "procedure" see @ref vcl_session_cleanup_handler */
431 vcl_session_table_add_vpp_handle (wrk, mp->handle, session_index);
433 if (vcl_segment_attach_session (
434 mp->segment_handle, mp->server_rx_fifo, mp->server_tx_fifo,
435 mp->vpp_event_queue_address, mp->mq_index, 0, session))
437 VDBG (0, "session %u [0x%llx]: failed to attach fifos",
438 session->session_index, session->vpp_handle);
439 session->session_state = VCL_STATE_UPDATED;
440 vcl_send_session_disconnect (wrk, session);
441 return session_index;
446 if (vcl_segment_attach_session (mp->ct_segment_handle, mp->ct_rx_fifo,
447 mp->ct_tx_fifo, (uword) ~0, ~0, 1,
450 VDBG (0, "session %u [0x%llx]: failed to attach ct fifos",
451 session->session_index, session->vpp_handle);
452 session->session_state = VCL_STATE_UPDATED;
453 vcl_send_session_disconnect (wrk, session);
454 return session_index;
458 session->transport.is_ip4 = mp->lcl.is_ip4;
459 clib_memcpy_fast (&session->transport.lcl_ip, &mp->lcl.ip,
460 sizeof (session->transport.lcl_ip));
461 session->transport.lcl_port = mp->lcl.port;
463 /* Application closed session before connect reply */
464 if (vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK)
465 && session->session_state == VCL_STATE_CLOSED)
466 vcl_send_session_disconnect (wrk, session);
468 session->session_state = VCL_STATE_READY;
470 VDBG (0, "session %u [0x%llx] connected local: %U:%u remote %U:%u",
471 session->session_index, session->vpp_handle, vcl_format_ip46_address,
472 &session->transport.lcl_ip,
473 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
474 clib_net_to_host_u16 (session->transport.lcl_port),
475 vcl_format_ip46_address, &session->transport.rmt_ip,
476 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
477 clib_net_to_host_u16 (session->transport.rmt_port));
479 return session_index;
483 vcl_flag_accepted_session (vcl_session_t * session, u64 handle, u32 flags)
485 vcl_session_msg_t *accepted_msg;
488 for (i = 0; i < vec_len (session->accept_evts_fifo); i++)
490 accepted_msg = &session->accept_evts_fifo[i];
491 if (accepted_msg->accepted_msg.handle == handle)
493 accepted_msg->flags |= flags;
501 vcl_session_reset_handler (vcl_worker_t * wrk,
502 session_reset_msg_t * reset_msg)
504 vcl_session_t *session;
507 sid = vcl_session_index_from_vpp_handle (wrk, reset_msg->handle);
508 session = vcl_session_get (wrk, sid);
511 VDBG (0, "request to reset unknown handle 0x%llx", reset_msg->handle);
512 return VCL_INVALID_SESSION_INDEX;
515 /* Caught a reset before actually accepting the session */
516 if (session->session_state == VCL_STATE_LISTEN ||
517 session->session_state == VCL_STATE_LISTEN_NO_MQ)
519 if (!vcl_flag_accepted_session (session, reset_msg->handle,
520 VCL_ACCEPTED_F_RESET))
521 VDBG (0, "session was not accepted!");
522 return VCL_INVALID_SESSION_INDEX;
525 if (session->session_state != VCL_STATE_CLOSED)
526 session->session_state = VCL_STATE_DISCONNECT;
528 session->flags |= (VCL_SESSION_F_RD_SHUTDOWN | VCL_SESSION_F_WR_SHUTDOWN);
529 VDBG (0, "session %u [0x%llx]: reset", sid, reset_msg->handle);
534 vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp)
536 vcl_session_t *session;
537 u32 sid = mp->context;
539 session = vcl_session_get (wrk, sid);
542 VERR ("session %u [0x%llx]: bind failed: %U", sid, mp->handle,
543 format_session_error, mp->retval);
546 session->session_state = VCL_STATE_DETACHED;
547 session->vpp_handle = mp->handle;
548 session->vpp_error = mp->retval;
553 VDBG (0, "session %u [0x%llx]: Invalid session index!", sid,
555 return VCL_INVALID_SESSION_INDEX;
559 session->vpp_handle = mp->handle;
560 session->transport.is_ip4 = mp->lcl_is_ip4;
561 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
562 sizeof (ip46_address_t));
563 session->transport.lcl_port = mp->lcl_port;
564 vcl_session_table_add_listener (wrk, mp->handle, sid);
565 session->session_state = VCL_STATE_LISTEN;
566 session->flags &= ~VCL_SESSION_F_PENDING_LISTEN;
568 if (vcl_session_is_cl (session))
570 if (vcl_segment_attach_session (mp->segment_handle, mp->rx_fifo,
571 mp->tx_fifo, mp->vpp_evt_q, mp->mq_index,
574 VDBG (0, "session %u [0x%llx]: failed to attach fifos",
575 session->session_index, session->vpp_handle);
576 session->session_state = VCL_STATE_DETACHED;
577 return VCL_INVALID_SESSION_INDEX;
581 VDBG (0, "session %u [0x%llx]: listen succeeded!", sid, mp->handle);
586 vcl_session_unlisten_reply_handler (vcl_worker_t * wrk, void *data)
588 session_unlisten_reply_msg_t *mp = (session_unlisten_reply_msg_t *) data;
591 s = vcl_session_get_w_vpp_handle (wrk, mp->handle);
594 VDBG (0, "Unlisten reply with wrong handle %llx", mp->handle);
597 if (s->session_state != VCL_STATE_DISCONNECT)
599 /* Connected udp listener */
600 if (s->session_type == VPPCOM_PROTO_UDP
601 && s->session_state == VCL_STATE_CLOSED)
604 VDBG (0, "Unlisten session in wrong state %llx", mp->handle);
609 VDBG (0, "ERROR: session %u [0xllx]: unlisten failed: %U",
610 s->session_index, mp->handle, format_session_error, mp->retval);
612 if (mp->context != wrk->wrk_index)
613 VDBG (0, "wrong context");
615 vcl_session_table_del_vpp_handle (wrk, mp->handle);
616 vcl_session_free (wrk, s);
620 vcl_session_migrated_handler (vcl_worker_t * wrk, void *data)
622 session_migrated_msg_t *mp = (session_migrated_msg_t *) data;
626 s = vcl_session_get_w_vpp_handle (wrk, mp->handle);
629 VDBG (0, "Migrated notification with wrong handle %llx", mp->handle);
633 /* Only validate if a value is provided */
634 if (mp->segment_handle != SESSION_INVALID_HANDLE)
636 fs_index = vcl_segment_table_lookup (mp->segment_handle);
637 if (fs_index == VCL_INVALID_SEGMENT_INDEX)
639 VDBG (0, "segment %lx for session %u is not mounted!",
640 mp->segment_handle, s->session_index);
641 s->session_state = VCL_STATE_DETACHED;
646 s->vpp_handle = mp->new_handle;
648 vcl_segment_attach_mq (vcl_vpp_worker_segment_handle (0), mp->vpp_evt_q,
649 mp->vpp_thread_index, &s->vpp_evt_q);
651 vcl_session_table_del_vpp_handle (wrk, mp->handle);
652 vcl_session_table_add_vpp_handle (wrk, mp->new_handle, s->session_index);
654 /* Generate new tx event if we have outstanding data */
655 if (svm_fifo_has_event (s->tx_fifo))
656 app_send_io_evt_to_vpp (s->vpp_evt_q,
657 s->tx_fifo->shr->master_session_index,
658 SESSION_IO_EVT_TX, SVM_Q_WAIT);
660 VDBG (0, "Migrated 0x%lx to thread %u 0x%lx", mp->handle,
661 mp->vpp_thread_index, mp->new_handle);
664 static vcl_session_t *
665 vcl_session_accepted (vcl_worker_t * wrk, session_accepted_msg_t * msg)
667 vcl_session_msg_t *vcl_msg;
668 vcl_session_t *session;
670 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
671 if (PREDICT_FALSE (session != 0))
672 VWRN ("session overlap handle %lu state %u!", msg->handle,
673 session->session_state);
675 session = vcl_session_table_lookup_listener (wrk, msg->listener_handle);
678 VERR ("couldn't find listen session: listener handle %llx",
679 msg->listener_handle);
683 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
685 vcl_msg->accepted_msg = *msg;
686 /* Session handle points to listener until fully accepted by app */
687 vcl_session_table_add_vpp_handle (wrk, msg->handle, session->session_index);
692 static vcl_session_t *
693 vcl_session_disconnected_handler (vcl_worker_t * wrk,
694 session_disconnected_msg_t * msg)
696 vcl_session_t *session;
698 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
701 VWRN ("request to disconnect unknown handle 0x%llx", msg->handle);
705 /* Late disconnect notification on a session that has been closed */
706 if (session->session_state == VCL_STATE_CLOSED)
709 /* Caught a disconnect before actually accepting the session */
710 if (session->session_state == VCL_STATE_LISTEN ||
711 session->session_state == VCL_STATE_LISTEN_NO_MQ)
713 if (!vcl_flag_accepted_session (session, msg->handle,
714 VCL_ACCEPTED_F_CLOSED))
715 VDBG (0, "session was not accepted!");
719 /* If not already reset change state */
720 if (session->session_state != VCL_STATE_DISCONNECT)
721 session->session_state = VCL_STATE_VPP_CLOSING;
727 vppcom_session_shutdown (uint32_t session_handle, int how)
729 vcl_worker_t *wrk = vcl_worker_get_current ();
730 vcl_session_t *session;
731 vcl_session_state_t state;
734 session = vcl_session_get_w_handle (wrk, session_handle);
735 if (PREDICT_FALSE (!session))
736 return VPPCOM_EBADFD;
738 vpp_handle = session->vpp_handle;
739 state = session->session_state;
741 VDBG (1, "session %u [0x%llx] state 0x%x (%s)", session->session_index,
742 vpp_handle, state, vcl_session_state_str (state));
744 if (PREDICT_FALSE (state == VCL_STATE_LISTEN))
746 VDBG (0, "ERROR: Cannot shutdown a listen socket!");
747 return VPPCOM_EBADFD;
750 if (how == SHUT_RD || how == SHUT_RDWR)
752 session->flags |= VCL_SESSION_F_RD_SHUTDOWN;
756 session->flags |= VCL_SESSION_F_WR_SHUTDOWN;
758 if (PREDICT_TRUE (state == VCL_STATE_READY))
760 VDBG (1, "session %u [0x%llx]: sending shutdown...",
761 session->session_index, vpp_handle);
763 vcl_send_session_shutdown (wrk, session);
770 vppcom_session_disconnect (u32 session_handle)
772 vcl_worker_t *wrk = vcl_worker_get_current ();
773 vcl_session_t *session, *listen_session;
774 vcl_session_state_t state;
777 session = vcl_session_get_w_handle (wrk, session_handle);
779 return VPPCOM_EBADFD;
781 vpp_handle = session->vpp_handle;
782 state = session->session_state;
784 VDBG (1, "session %u [0x%llx]: disconnecting state (%s)",
785 session->session_index, vpp_handle, vcl_session_state_str (state));
787 if (PREDICT_FALSE (state == VCL_STATE_LISTEN))
789 VDBG (0, "ERROR: Cannot disconnect a listen socket!");
790 return VPPCOM_EBADFD;
793 if (state == VCL_STATE_VPP_CLOSING)
795 vcl_send_session_disconnected_reply (wrk, session, 0);
796 VDBG (1, "session %u [0x%llx]: sending disconnect REPLY...",
797 session->session_index, vpp_handle);
801 /* Session doesn't have an event queue yet. Probably a non-blocking
802 * connect. Wait for the reply */
803 if (PREDICT_FALSE (!session->vpp_evt_q))
806 VDBG (1, "session %u [0x%llx]: sending disconnect",
807 session->session_index, vpp_handle);
808 vcl_send_session_disconnect (wrk, session);
811 if (session->listener_index != VCL_INVALID_SESSION_INDEX)
813 listen_session = vcl_session_get (wrk, session->listener_index);
815 listen_session->n_accepted_sessions--;
822 vcl_session_cleanup_handler (vcl_worker_t * wrk, void *data)
824 session_cleanup_msg_t *msg;
825 vcl_session_t *session;
827 msg = (session_cleanup_msg_t *) data;
828 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
831 VWRN ("disconnect confirmed for unknown handle 0x%llx", msg->handle);
835 if (msg->type == SESSION_CLEANUP_TRANSPORT)
837 /* Transport was cleaned up before we confirmed close. Probably the
838 * app is still waiting for some data that cannot be delivered.
839 * Confirm close to make sure everything is cleaned up.
840 * Move to undetermined state to ensure that the session is not
841 * removed before both vpp and the app cleanup.
842 * - If the app closes first, the session is moved to CLOSED state
843 * and the session cleanup notification from vpp removes the
845 * - If vpp cleans up the session first, the session is moved to
846 * DETACHED state lower and subsequently the close from the app
849 if (session->session_state == VCL_STATE_VPP_CLOSING)
851 vppcom_session_disconnect (vcl_session_handle (session));
852 session->session_state = VCL_STATE_UPDATED;
854 else if (session->session_state == VCL_STATE_DISCONNECT)
856 vcl_send_session_reset_reply (wrk, session, 0);
857 session->session_state = VCL_STATE_UPDATED;
862 /* VPP will reuse the handle so clean it up now */
863 vcl_session_table_del_vpp_handle (wrk, msg->handle);
865 /* App did not close the connection yet so don't free it. */
866 if (session->session_state != VCL_STATE_CLOSED)
868 VDBG (0, "session %u: app did not close", session->session_index);
869 session->session_state = VCL_STATE_DETACHED;
870 session->vpp_handle = VCL_INVALID_SESSION_HANDLE;
874 /* Session probably tracked with epoll, disconnect not yet handled and
875 * 1) both transport and session cleanup completed 2) app closed. Wait
876 * until message is drained to free the session.
877 * See @ref vcl_handle_mq_event */
878 if (session->flags & VCL_SESSION_F_PENDING_DISCONNECT)
880 session->flags |= VCL_SESSION_F_PENDING_FREE;
884 vcl_session_free (wrk, session);
888 vcl_session_req_worker_update_handler (vcl_worker_t * wrk, void *data)
890 session_req_worker_update_msg_t *msg;
893 msg = (session_req_worker_update_msg_t *) data;
894 s = vcl_session_get_w_vpp_handle (wrk, msg->session_handle);
898 vec_add1 (wrk->pending_session_wrk_updates, s->session_index);
902 vcl_session_worker_update_reply_handler (vcl_worker_t * wrk, void *data)
904 session_worker_update_reply_msg_t *msg;
907 msg = (session_worker_update_reply_msg_t *) data;
908 s = vcl_session_get_w_vpp_handle (wrk, msg->handle);
911 VDBG (0, "unknown handle 0x%llx", msg->handle);
917 if (vcl_segment_attach_session (msg->segment_handle, msg->rx_fifo,
918 msg->tx_fifo, (uword) ~0, ~0, 0, s))
920 VDBG (0, "failed to attach fifos for %u", s->session_index);
924 s->session_state = VCL_STATE_UPDATED;
926 VDBG (0, "session %u[0x%llx] moved to worker %u", s->session_index,
927 s->vpp_handle, wrk->wrk_index);
931 vcl_api_recv_fd (vcl_worker_t * wrk, int *fds, int n_fds)
934 if (vcm->cfg.vpp_app_socket_api)
935 return vcl_sapi_recv_fds (wrk, fds, n_fds);
937 return vcl_bapi_recv_fds (wrk, fds, n_fds);
941 vcl_session_app_add_segment_handler (vcl_worker_t * wrk, void *data)
943 ssvm_segment_type_t seg_type = SSVM_SEGMENT_SHM;
944 session_app_add_segment_msg_t *msg;
948 msg = (session_app_add_segment_msg_t *) data;
952 vcl_api_recv_fd (wrk, &fd, 1);
953 seg_type = SSVM_SEGMENT_MEMFD;
956 segment_handle = msg->segment_handle;
957 if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
959 clib_warning ("invalid segment handle");
963 if (vcl_segment_attach (segment_handle, (char *) msg->segment_name,
966 VDBG (0, "vcl_segment_attach ('%s') failed", msg->segment_name);
970 VDBG (1, "mapped new segment '%s' size %d", msg->segment_name,
975 vcl_session_app_del_segment_handler (vcl_worker_t * wrk, void *data)
977 session_app_del_segment_msg_t *msg = (session_app_del_segment_msg_t *) data;
978 vcl_segment_detach (msg->segment_handle);
979 VDBG (1, "Unmapped segment: %lx", msg->segment_handle);
983 vcl_worker_rpc_handler (vcl_worker_t * wrk, void *data)
985 if (!vcm->wrk_rpc_fn)
988 (vcm->wrk_rpc_fn) (((session_app_wrk_rpc_msg_t *) data)->data);
992 vcl_session_transport_attr_reply_handler (vcl_worker_t *wrk, void *data)
994 session_transport_attr_reply_msg_t *mp;
996 if (!wrk->session_attr_op)
999 mp = (session_transport_attr_reply_msg_t *) data;
1001 wrk->session_attr_op_rv = mp->retval;
1002 wrk->session_attr_op = 0;
1003 wrk->session_attr_rv = mp->attr;
1007 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
1009 session_disconnected_msg_t *disconnected_msg;
1010 session_connected_msg_t *connected_msg;
1011 session_reset_msg_t *reset_msg;
1012 session_event_t *ecpy;
1016 switch (e->event_type)
1018 case SESSION_IO_EVT_RX:
1019 case SESSION_IO_EVT_TX:
1020 s = vcl_session_get (wrk, e->session_index);
1021 if (!s || !vcl_session_is_open (s))
1023 vec_add1 (wrk->unhandled_evts_vector, *e);
1025 case SESSION_CTRL_EVT_BOUND:
1026 /* We can only wait for only one listen so not postponed */
1027 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
1029 case SESSION_CTRL_EVT_ACCEPTED:
1030 s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
1031 if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
1033 vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
1035 ecpy->postponed = 1;
1036 ecpy->session_index = s->session_index;
1039 case SESSION_CTRL_EVT_CONNECTED:
1040 connected_msg = (session_connected_msg_t *) e->data;
1041 sid = vcl_session_connected_handler (wrk, connected_msg);
1042 if (!(s = vcl_session_get (wrk, sid)))
1044 if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
1046 vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
1048 ecpy->postponed = 1;
1049 ecpy->session_index = s->session_index;
1052 case SESSION_CTRL_EVT_DISCONNECTED:
1053 disconnected_msg = (session_disconnected_msg_t *) e->data;
1054 if (!(s = vcl_session_get_w_vpp_handle (wrk, disconnected_msg->handle)))
1056 if (s->session_state == VCL_STATE_CLOSED)
1058 /* We do not postpone for blocking sessions or listen sessions because:
1059 * 1. Blocking sessions are not part of epoll instead they're used in a
1060 * synchronous manner, such as read/write and etc.
1061 * 2. Listen sessions that have not yet been accepted can't change to
1062 * VPP_CLOSING state instead can been marked as ACCEPTED_F_CLOSED.
1064 if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK) &&
1065 !(s->session_state == VCL_STATE_LISTEN ||
1066 s->session_state == VCL_STATE_LISTEN_NO_MQ))
1068 s->session_state = VCL_STATE_VPP_CLOSING;
1069 s->flags |= VCL_SESSION_F_PENDING_DISCONNECT;
1070 vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
1072 ecpy->postponed = 1;
1073 ecpy->session_index = s->session_index;
1076 if (!(s = vcl_session_disconnected_handler (wrk, disconnected_msg)))
1078 VDBG (0, "disconnected session %u [0x%llx]", s->session_index,
1081 case SESSION_CTRL_EVT_RESET:
1082 reset_msg = (session_reset_msg_t *) e->data;
1083 if (!(s = vcl_session_get_w_vpp_handle (wrk, reset_msg->handle)))
1085 if (s->session_state == VCL_STATE_CLOSED)
1087 /* We do not postpone for blocking sessions or listen sessions because:
1088 * 1. Blocking sessions are not part of epoll instead they're used in a
1089 * synchronous manner, such as read/write and etc.
1090 * 2. Listen sessions that have not yet been accepted can't change to
1091 * DISCONNECT state instead can been marked as ACCEPTED_F_RESET.
1093 if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK) &&
1094 !(s->session_state == VCL_STATE_LISTEN ||
1095 s->session_state == VCL_STATE_LISTEN_NO_MQ))
1097 s->flags |= VCL_SESSION_F_PENDING_DISCONNECT;
1098 s->session_state = VCL_STATE_DISCONNECT;
1099 s->flags |= (VCL_SESSION_F_RD_SHUTDOWN | VCL_SESSION_F_WR_SHUTDOWN);
1100 vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
1102 ecpy->postponed = 1;
1103 ecpy->session_index = s->session_index;
1106 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
1108 case SESSION_CTRL_EVT_UNLISTEN_REPLY:
1109 vcl_session_unlisten_reply_handler (wrk, e->data);
1111 case SESSION_CTRL_EVT_MIGRATED:
1112 vcl_session_migrated_handler (wrk, e->data);
1114 case SESSION_CTRL_EVT_CLEANUP:
1115 vcl_session_cleanup_handler (wrk, e->data);
1117 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
1118 vcl_session_req_worker_update_handler (wrk, e->data);
1120 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
1121 vcl_session_worker_update_reply_handler (wrk, e->data);
1123 case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
1124 vcl_session_app_add_segment_handler (wrk, e->data);
1126 case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
1127 vcl_session_app_del_segment_handler (wrk, e->data);
1129 case SESSION_CTRL_EVT_APP_WRK_RPC:
1130 vcl_worker_rpc_handler (wrk, e->data);
1132 case SESSION_CTRL_EVT_TRANSPORT_ATTR_REPLY:
1133 vcl_session_transport_attr_reply_handler (wrk, e->data);
1136 clib_warning ("unhandled %u", e->event_type);
1142 vppcom_wait_for_session_state_change (u32 session_index,
1143 vcl_session_state_t state,
1146 vcl_worker_t *wrk = vcl_worker_get_current ();
1147 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
1148 vcl_session_t *volatile session;
1149 svm_msg_q_msg_t msg;
1154 session = vcl_session_get (wrk, session_index);
1155 if (PREDICT_FALSE (!session))
1157 return VPPCOM_EBADFD;
1159 if (session->session_state == state)
1163 if (session->session_state == VCL_STATE_DETACHED)
1165 if (session->vpp_error == SESSION_E_ALREADY_LISTENING)
1166 return VPPCOM_EADDRINUSE;
1168 return VPPCOM_ECONNREFUSED;
1171 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
1176 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1177 vcl_handle_mq_event (wrk, e);
1178 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1180 while (clib_time_now (&wrk->clib_time) < timeout);
1182 VDBG (0, "timeout waiting for state 0x%x (%s)", state,
1183 vcl_session_state_str (state));
1184 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
1186 return VPPCOM_ETIMEDOUT;
1190 vcl_handle_pending_wrk_updates (vcl_worker_t * wrk)
1192 vcl_session_state_t state;
1196 if (PREDICT_TRUE (vec_len (wrk->pending_session_wrk_updates) == 0))
1199 vec_foreach (sip, wrk->pending_session_wrk_updates)
1201 s = vcl_session_get (wrk, *sip);
1202 vcl_send_session_worker_update (wrk, s, wrk->wrk_index);
1203 state = s->session_state;
1204 vppcom_wait_for_session_state_change (s->session_index, VCL_STATE_UPDATED,
1206 s->session_state = state;
1208 vec_reset_length (wrk->pending_session_wrk_updates);
1212 vcl_worker_flush_mq_events (vcl_worker_t *wrk)
1214 svm_msg_q_msg_t *msg;
1219 mq = wrk->app_event_queue;
1220 vcl_mq_dequeue_batch (wrk, mq, ~0);
1222 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
1224 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
1225 e = svm_msg_q_msg_data (mq, msg);
1226 vcl_handle_mq_event (wrk, e);
1227 svm_msg_q_free_msg (mq, msg);
1229 vec_reset_length (wrk->mq_msg_vector);
1230 vcl_handle_pending_wrk_updates (wrk);
1234 vcl_flush_mq_events (void)
1236 vcl_worker_flush_mq_events (vcl_worker_get_current ());
1240 vppcom_session_unbind (u32 session_handle)
1242 vcl_worker_t *wrk = vcl_worker_get_current ();
1243 session_accepted_msg_t *accepted_msg;
1244 vcl_session_t *session = 0;
1245 vcl_session_msg_t *evt;
1247 session = vcl_session_get_w_handle (wrk, session_handle);
1249 return VPPCOM_EBADFD;
1251 /* Flush pending accept events, if any */
1252 while (clib_fifo_elts (session->accept_evts_fifo))
1254 clib_fifo_sub2 (session->accept_evts_fifo, evt);
1255 accepted_msg = &evt->accepted_msg;
1256 vcl_session_table_del_vpp_handle (wrk, accepted_msg->handle);
1257 vcl_send_session_accepted_reply (session->vpp_evt_q,
1258 accepted_msg->context,
1259 accepted_msg->handle, -1);
1261 clib_fifo_free (session->accept_evts_fifo);
1263 vcl_send_session_unlisten (wrk, session);
1265 VDBG (0, "session %u [0x%llx]: sending unbind!", session->session_index,
1266 session->vpp_handle);
1267 vcl_evt (VCL_EVT_UNBIND, session);
1269 session->vpp_handle = ~0;
1270 session->session_state = VCL_STATE_DISCONNECT;
1278 * Notify vpp of the disconnect and mark the worker as free. If we're the
1279 * last worker, do a full cleanup otherwise, since we're probably a forked
1280 * child, avoid syscalls as much as possible. We might've lost privileges.
1283 vppcom_app_exit (void)
1285 if (!pool_elts (vcm->workers))
1287 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
1288 vcl_set_worker_index (~0);
1289 vcl_elog_stop (vcm);
1293 vcl_api_attach (void)
1295 if (vcm->cfg.vpp_app_socket_api)
1296 return vcl_sapi_attach ();
1298 return vcl_bapi_attach ();
1302 vcl_is_first_reattach_to_execute ()
1304 if (vcm->reattach_count == 0)
1311 vcl_set_reattach_counter ()
1313 ++vcm->reattach_count;
1315 if (vcm->reattach_count == vec_len (vcm->workers))
1316 vcm->reattach_count = 0;
1320 * Reattach vcl to vpp after it has previously been disconnected.
1322 * The logic should be:
1323 * - first worker to hit `vcl_api_retry_attach` should attach to vpp,
1324 * to reproduce the `vcl_api_attach` in `vppcom_app_create`.
1325 * - the rest of the workers should `reproduce vcl_worker_register_with_vpp`
1326 * from `vppcom_worker_register` since they were already allocated.
1330 vcl_api_retry_attach (vcl_worker_t *wrk)
1334 clib_spinlock_lock (&vcm->workers_lock);
1335 if (vcl_is_first_reattach_to_execute ())
1337 if (vcl_api_attach ())
1339 clib_spinlock_unlock (&vcm->workers_lock);
1342 vcl_set_reattach_counter ();
1343 clib_spinlock_unlock (&vcm->workers_lock);
1347 vcl_set_reattach_counter ();
1348 clib_spinlock_unlock (&vcm->workers_lock);
1349 vcl_worker_register_with_vpp ();
1352 /* Treat listeners as configuration that needs to be re-added to vpp */
1353 pool_foreach (s, wrk->sessions)
1355 if (s->flags & VCL_SESSION_F_IS_VEP)
1357 if (s->session_state == VCL_STATE_LISTEN_NO_MQ)
1358 vppcom_session_listen (vcl_session_handle (s), 10);
1360 VDBG (0, "internal error: unexpected state %d", s->session_state);
1365 vcl_api_handle_disconnect (vcl_worker_t *wrk)
1367 wrk->api_client_handle = ~0;
1368 vcl_worker_detach_sessions (wrk);
1372 vcl_api_detach (vcl_worker_t * wrk)
1374 if (wrk->api_client_handle == ~0)
1377 vcl_send_app_detach (wrk);
1379 if (vcm->cfg.vpp_app_socket_api)
1380 return vcl_sapi_detach (wrk);
1382 return vcl_bapi_disconnect_from_vpp ();
1386 * VPPCOM Public API functions
1389 vppcom_app_create (const char *app_name)
1391 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
1396 VDBG (1, "already initialized");
1397 return VPPCOM_EEXIST;
1401 vppcom_cfg (&vcm->cfg);
1402 vcl_cfg = &vcm->cfg;
1404 vcm->main_cpu = pthread_self ();
1405 vcm->main_pid = getpid ();
1406 vcm->app_name = format (0, "%s", app_name);
1407 fifo_segment_main_init (&vcm->segment_main, (uword) ~0,
1408 20 /* timeout in secs */);
1409 pool_alloc (vcm->workers, vcl_cfg->max_workers);
1410 clib_spinlock_init (&vcm->workers_lock);
1411 clib_rwlock_init (&vcm->segment_table_lock);
1412 atexit (vppcom_app_exit);
1413 vcl_elog_init (vcm);
1415 /* Allocate default worker */
1416 vcl_worker_alloc_and_init ();
1418 if ((rv = vcl_api_attach ()))
1420 vppcom_app_destroy ();
1424 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
1425 vcm->workers[0].api_client_handle, vcm->workers[0].api_client_handle);
1431 vppcom_app_destroy (void)
1433 vcl_worker_t *wrk, *current_wrk;
1436 if (!pool_elts (vcm->workers))
1439 vcl_evt (VCL_EVT_DETACH, vcm);
1441 current_wrk = vcl_worker_get_current ();
1444 pool_foreach (wrk, vcm->workers) {
1445 if (current_wrk != wrk)
1446 vcl_worker_cleanup (wrk, 0 /* notify vpp */ );
1450 vcl_api_detach (current_wrk);
1451 vcl_worker_cleanup (current_wrk, 0 /* notify vpp */ );
1452 vcl_set_worker_index (~0);
1454 vcl_elog_stop (vcm);
1457 * Free the heap and fix vcm
1459 heap = clib_mem_get_heap ();
1460 munmap (clib_mem_get_heap_base (heap), clib_mem_get_heap_size (heap));
1462 vcm = &_vppcom_main;
1467 vppcom_session_create (u8 proto, u8 is_nonblocking)
1469 vcl_worker_t *wrk = vcl_worker_get_current ();
1470 vcl_session_t *session;
1472 session = vcl_session_alloc (wrk);
1474 session->session_type = proto;
1475 session->session_state = VCL_STATE_CLOSED;
1476 session->vpp_handle = ~0;
1477 session->is_dgram = vcl_proto_is_dgram (proto);
1478 session->vpp_error = SESSION_E_NONE;
1481 vcl_session_set_attr (session, VCL_SESS_ATTR_NONBLOCK);
1483 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
1484 is_nonblocking, session_index);
1486 VDBG (0, "created session %u", session->session_index);
1488 return vcl_session_handle (session);
1492 vcl_epoll_lt_add (vcl_worker_t *wrk, vcl_session_t *s)
1494 vcl_session_t *cur, *prev;
1496 ASSERT (s->vep.lt_next == VCL_INVALID_SESSION_INDEX);
1498 if (wrk->ep_lt_current == VCL_INVALID_SESSION_INDEX)
1500 wrk->ep_lt_current = s->session_index;
1501 s->vep.lt_next = s->session_index;
1502 s->vep.lt_prev = s->session_index;
1506 cur = vcl_session_get (wrk, wrk->ep_lt_current);
1507 prev = vcl_session_get (wrk, cur->vep.lt_prev);
1509 prev->vep.lt_next = s->session_index;
1510 s->vep.lt_prev = prev->session_index;
1512 s->vep.lt_next = cur->session_index;
1513 cur->vep.lt_prev = s->session_index;
1517 vcl_epoll_lt_del (vcl_worker_t *wrk, vcl_session_t *s)
1519 vcl_session_t *prev, *next;
1521 ASSERT (s->vep.lt_next != VCL_INVALID_SESSION_INDEX);
1523 if (s->vep.lt_next == s->session_index)
1525 wrk->ep_lt_current = VCL_INVALID_SESSION_INDEX;
1526 s->vep.lt_next = VCL_INVALID_SESSION_INDEX;
1527 s->vep.lt_prev = VCL_INVALID_SESSION_INDEX;
1531 prev = vcl_session_get (wrk, s->vep.lt_prev);
1532 next = vcl_session_get (wrk, s->vep.lt_next);
1534 prev->vep.lt_next = next->session_index;
1535 next->vep.lt_prev = prev->session_index;
1537 if (s->session_index == wrk->ep_lt_current)
1538 wrk->ep_lt_current = s->vep.lt_next;
1540 s->vep.lt_next = VCL_INVALID_SESSION_INDEX;
1541 s->vep.lt_prev = VCL_INVALID_SESSION_INDEX;
1545 vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * s,
1546 vcl_session_handle_t sh, u8 do_disconnect)
1550 VDBG (1, "session %u [0x%llx] closing", s->session_index, s->vpp_handle);
1552 if (s->flags & VCL_SESSION_F_IS_VEP)
1554 u32 next_sh = s->vep.next_sh;
1555 while (next_sh != ~0)
1557 rv = vppcom_epoll_ctl (sh, EPOLL_CTL_DEL, next_sh, 0);
1558 if (PREDICT_FALSE (rv < 0))
1559 VDBG (0, "vpp handle 0x%llx, sh %u: EPOLL_CTL_DEL vep_idx %u"
1560 " failed! rv %d (%s)", s->vpp_handle, next_sh,
1561 s->vep.vep_sh, rv, vppcom_retval_str (rv));
1562 next_sh = s->vep.next_sh;
1567 if (s->flags & VCL_SESSION_F_IS_VEP_SESSION)
1569 rv = vppcom_epoll_ctl (s->vep.vep_sh, EPOLL_CTL_DEL, sh, 0);
1571 VDBG (0, "session %u [0x%llx]: EPOLL_CTL_DEL vep_idx %u "
1572 "failed! rv %d (%s)", s->session_index, s->vpp_handle,
1573 s->vep.vep_sh, rv, vppcom_retval_str (rv));
1578 VDBG (1, "session %u [0x%llx] disconnect skipped",
1579 s->session_index, s->vpp_handle);
1583 if (s->session_state == VCL_STATE_LISTEN)
1585 rv = vppcom_session_unbind (sh);
1586 if (PREDICT_FALSE (rv < 0))
1587 VDBG (0, "session %u [0x%llx]: listener unbind failed! "
1588 "rv %d (%s)", s->session_index, s->vpp_handle, rv,
1589 vppcom_retval_str (rv));
1592 else if (vcl_session_is_ready (s)
1593 || (vcl_session_is_connectable_listener (wrk, s)))
1595 rv = vppcom_session_disconnect (sh);
1596 if (PREDICT_FALSE (rv < 0))
1597 VDBG (0, "ERROR: session %u [0x%llx]: disconnect failed!"
1598 " rv %d (%s)", s->session_index, s->vpp_handle,
1599 rv, vppcom_retval_str (rv));
1601 else if (s->session_state == VCL_STATE_DISCONNECT)
1603 vcl_send_session_reset_reply (wrk, s, 0);
1605 else if (s->session_state == VCL_STATE_DETACHED)
1607 VDBG (0, "vpp freed session %d before close", s->session_index);
1609 if (!(s->flags & VCL_SESSION_F_PENDING_DISCONNECT))
1612 /* Disconnect/reset messages pending but vpp transport and session
1613 * cleanups already done. Free only after messages drained. */
1614 s->flags |= VCL_SESSION_F_PENDING_FREE;
1617 s->session_state = VCL_STATE_CLOSED;
1619 /* Session is removed only after vpp confirms the disconnect */
1623 vcl_session_table_del_vpp_handle (wrk, s->vpp_handle);
1625 vcl_session_free (wrk, s);
1626 vcl_evt (VCL_EVT_CLOSE, s, rv);
1632 vppcom_session_close (uint32_t session_handle)
1634 vcl_worker_t *wrk = vcl_worker_get_current ();
1635 vcl_session_t *session;
1637 session = vcl_session_get_w_handle (wrk, session_handle);
1639 return VPPCOM_EBADFD;
1640 return vcl_session_cleanup (wrk, session, session_handle,
1641 1 /* do_disconnect */ );
1645 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1647 vcl_worker_t *wrk = vcl_worker_get_current ();
1648 vcl_session_t *session = 0;
1651 return VPPCOM_EINVAL;
1653 session = vcl_session_get_w_handle (wrk, session_handle);
1655 return VPPCOM_EBADFD;
1657 if (session->flags & VCL_SESSION_F_IS_VEP)
1659 VDBG (0, "ERROR: cannot bind to epoll session %u!",
1660 session->session_index);
1661 return VPPCOM_EBADFD;
1664 session->transport.is_ip4 = ep->is_ip4;
1666 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1667 sizeof (ip4_address_t));
1669 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1670 sizeof (ip6_address_t));
1671 session->transport.lcl_port = ep->port;
1674 "session %u handle %u: binding to local %s address %U port %u, "
1676 session->session_index, session_handle,
1677 session->transport.is_ip4 ? "IPv4" : "IPv6", vcl_format_ip46_address,
1678 &session->transport.lcl_ip,
1679 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1680 clib_net_to_host_u16 (session->transport.lcl_port),
1681 vppcom_proto_str (session->session_type));
1682 vcl_evt (VCL_EVT_BIND, session);
1684 if (session->session_type == VPPCOM_PROTO_UDP)
1685 return vppcom_session_listen (session_handle, 10);
1691 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1693 vcl_worker_t *wrk = vcl_worker_get_current ();
1694 vcl_session_t *listen_session = 0;
1695 u64 listen_vpp_handle;
1698 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1699 if (!listen_session || (listen_session->flags & VCL_SESSION_F_IS_VEP))
1700 return VPPCOM_EBADFD;
1702 listen_vpp_handle = listen_session->vpp_handle;
1703 if (listen_session->session_state == VCL_STATE_LISTEN)
1705 VDBG (0, "session %u [0x%llx]: already in listen state!",
1706 listen_sh, listen_vpp_handle);
1710 VDBG (0, "session %u: sending vpp listen request...", listen_sh);
1713 * Send listen request to vpp and wait for reply
1715 vcl_send_session_listen (wrk, listen_session);
1716 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1718 vcm->cfg.session_timeout);
1720 if (PREDICT_FALSE (rv))
1722 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1723 VDBG (0, "session %u [0x%llx]: listen failed! returning %d (%s)",
1724 listen_sh, listen_session->vpp_handle, rv,
1725 vppcom_retval_str (rv));
1733 vppcom_unformat_proto (uint8_t * proto, char *proto_str)
1735 if (!strcmp (proto_str, "TCP"))
1736 *proto = VPPCOM_PROTO_TCP;
1737 else if (!strcmp (proto_str, "tcp"))
1738 *proto = VPPCOM_PROTO_TCP;
1739 else if (!strcmp (proto_str, "UDP"))
1740 *proto = VPPCOM_PROTO_UDP;
1741 else if (!strcmp (proto_str, "udp"))
1742 *proto = VPPCOM_PROTO_UDP;
1743 else if (!strcmp (proto_str, "TLS"))
1744 *proto = VPPCOM_PROTO_TLS;
1745 else if (!strcmp (proto_str, "tls"))
1746 *proto = VPPCOM_PROTO_TLS;
1747 else if (!strcmp (proto_str, "QUIC"))
1748 *proto = VPPCOM_PROTO_QUIC;
1749 else if (!strcmp (proto_str, "quic"))
1750 *proto = VPPCOM_PROTO_QUIC;
1751 else if (!strcmp (proto_str, "DTLS"))
1752 *proto = VPPCOM_PROTO_DTLS;
1753 else if (!strcmp (proto_str, "dtls"))
1754 *proto = VPPCOM_PROTO_DTLS;
1755 else if (!strcmp (proto_str, "SRTP"))
1756 *proto = VPPCOM_PROTO_SRTP;
1757 else if (!strcmp (proto_str, "srtp"))
1758 *proto = VPPCOM_PROTO_SRTP;
1765 vppcom_session_accept (uint32_t ls_handle, vppcom_endpt_t *ep, uint32_t flags)
1767 u32 client_session_index = ~0, ls_index, accept_flags = 0;
1768 vcl_worker_t *wrk = vcl_worker_get_current ();
1769 session_accepted_msg_t accepted_msg;
1770 vcl_session_t *ls, *client_session = 0;
1771 vcl_session_msg_t *evt;
1776 ls = vcl_session_get_w_handle (wrk, ls_handle);
1778 return VPPCOM_EBADFD;
1780 if ((ls->session_state != VCL_STATE_LISTEN) &&
1781 (ls->session_state != VCL_STATE_LISTEN_NO_MQ) &&
1782 (!vcl_session_is_connectable_listener (wrk, ls)))
1784 VDBG (0, "ERROR: session [0x%llx]: not in listen state! state (%s)",
1785 ls->vpp_handle, vcl_session_state_str (ls->session_state));
1786 return VPPCOM_EBADFD;
1789 ls_index = ls->session_index;
1791 if (clib_fifo_elts (ls->accept_evts_fifo))
1793 clib_fifo_sub2 (ls->accept_evts_fifo, evt);
1794 accept_flags = evt->flags;
1795 accepted_msg = evt->accepted_msg;
1799 is_nonblocking = vcl_session_has_attr (ls, VCL_SESS_ATTR_NONBLOCK);
1802 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1803 return VPPCOM_EAGAIN;
1805 svm_msg_q_wait (wrk->app_event_queue, SVM_MQ_WAIT_EMPTY);
1806 vcl_worker_flush_mq_events (wrk);
1812 client_session_index =
1813 vcl_session_accepted_handler (wrk, &accepted_msg, ls_index);
1814 if (client_session_index == VCL_INVALID_SESSION_INDEX)
1815 return VPPCOM_ECONNABORTED;
1817 ls = vcl_session_get (wrk, ls_index);
1818 client_session = vcl_session_get (wrk, client_session_index);
1820 if (flags & O_NONBLOCK)
1821 vcl_session_set_attr (client_session, VCL_SESS_ATTR_NONBLOCK);
1824 "listener %u [0x%llx]: Got a connect request! session %u [0x%llx],"
1825 " flags %d, is_nonblocking %u",
1826 ls->session_index, ls->vpp_handle, client_session_index,
1827 client_session->vpp_handle, flags,
1828 vcl_session_has_attr (client_session, VCL_SESS_ATTR_NONBLOCK));
1832 ep->is_ip4 = client_session->transport.is_ip4;
1833 ep->port = client_session->transport.rmt_port;
1834 if (client_session->transport.is_ip4)
1835 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1836 sizeof (ip4_address_t));
1838 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1839 sizeof (ip6_address_t));
1843 "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u "
1845 ls_handle, ls->vpp_handle, client_session_index,
1846 client_session->vpp_handle, vcl_format_ip46_address,
1847 &client_session->transport.rmt_ip,
1848 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1849 clib_net_to_host_u16 (client_session->transport.rmt_port),
1850 vcl_format_ip46_address, &client_session->transport.lcl_ip,
1851 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1852 clib_net_to_host_u16 (client_session->transport.lcl_port));
1853 vcl_evt (VCL_EVT_ACCEPT, client_session, ls, client_session_index);
1856 * Session might have been closed already
1860 if (accept_flags & VCL_ACCEPTED_F_CLOSED)
1861 client_session->session_state = VCL_STATE_VPP_CLOSING;
1862 else if (accept_flags & VCL_ACCEPTED_F_RESET)
1863 client_session->session_state = VCL_STATE_DISCONNECT;
1865 return vcl_session_handle (client_session);
1869 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1871 vcl_worker_t *wrk = vcl_worker_get_current ();
1872 vcl_session_t *session = 0;
1876 session = vcl_session_get_w_handle (wrk, session_handle);
1878 return VPPCOM_EBADFD;
1879 session_index = session->session_index;
1881 if (PREDICT_FALSE (session->flags & VCL_SESSION_F_IS_VEP))
1883 VWRN ("cannot connect epoll session %u!", session->session_index);
1884 return VPPCOM_EBADFD;
1887 if (PREDICT_FALSE (vcl_session_is_ready (session)))
1890 "session %u [0x%llx]: already connected to %U:%d proto %s,"
1892 session->session_index, session->vpp_handle,
1893 vcl_format_ip46_address, &session->transport.rmt_ip,
1894 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1895 clib_net_to_host_u16 (session->transport.rmt_port),
1896 vppcom_proto_str (session->session_type),
1897 vcl_session_state_str (session->session_state));
1901 /* Attempt to connect a connectionless listener */
1902 if (PREDICT_FALSE (session->session_state == VCL_STATE_LISTEN))
1904 if (session->session_type != VPPCOM_PROTO_UDP)
1905 return VPPCOM_EINVAL;
1906 vcl_send_session_unlisten (wrk, session);
1907 session->session_state = VCL_STATE_CLOSED;
1910 session->transport.is_ip4 = server_ep->is_ip4;
1911 vcl_ip_copy_from_ep (&session->transport.rmt_ip, server_ep);
1912 session->transport.rmt_port = server_ep->port;
1913 session->parent_handle = VCL_INVALID_SESSION_HANDLE;
1914 session->flags |= VCL_SESSION_F_CONNECTED;
1916 VDBG (0, "session %u: connecting to peer %U:%d proto %s",
1917 session->session_index, vcl_format_ip46_address,
1918 &session->transport.rmt_ip,
1919 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1920 clib_net_to_host_u16 (session->transport.rmt_port),
1921 vppcom_proto_str (session->session_type));
1923 vcl_send_session_connect (wrk, session);
1925 if (vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK))
1927 /* State set to STATE_UPDATED to ensure the session is not assumed
1928 * to be ready and to also allow the app to close it prior to vpp's
1929 * connected reply. */
1930 session->session_state = VCL_STATE_UPDATED;
1931 return VPPCOM_EINPROGRESS;
1935 * Wait for reply from vpp if blocking
1937 rv = vppcom_wait_for_session_state_change (session_index, VCL_STATE_READY,
1938 vcm->cfg.session_timeout);
1940 session = vcl_session_get (wrk, session_index);
1941 VDBG (0, "session %u [0x%llx]: connect %s!", session->session_index,
1942 session->vpp_handle, rv ? "failed" : "succeeded");
1948 vppcom_session_stream_connect (uint32_t session_handle,
1949 uint32_t parent_session_handle)
1951 vcl_worker_t *wrk = vcl_worker_get_current ();
1952 vcl_session_t *session, *parent_session;
1953 u32 session_index, parent_session_index;
1956 session = vcl_session_get_w_handle (wrk, session_handle);
1958 return VPPCOM_EBADFD;
1959 parent_session = vcl_session_get_w_handle (wrk, parent_session_handle);
1960 if (!parent_session)
1961 return VPPCOM_EBADFD;
1963 session_index = session->session_index;
1964 parent_session_index = parent_session->session_index;
1965 if (PREDICT_FALSE (session->flags & VCL_SESSION_F_IS_VEP))
1967 VDBG (0, "ERROR: cannot connect epoll session %u!",
1968 session->session_index);
1969 return VPPCOM_EBADFD;
1972 if (PREDICT_FALSE (vcl_session_is_ready (session)))
1975 "session handle %u [0x%llx]: session already "
1976 "connected to session %u [0x%llx] proto %s, state 0x%x (%s)",
1977 session_handle, session->vpp_handle, parent_session_handle,
1978 parent_session->vpp_handle,
1979 vppcom_proto_str (session->session_type), session->session_state,
1980 vcl_session_state_str (session->session_state));
1984 /* Connect to quic session specifics */
1985 session->transport.is_ip4 = parent_session->transport.is_ip4;
1986 session->transport.rmt_ip.ip4.as_u32 = (uint32_t) 1;
1987 session->transport.rmt_port = 0;
1988 session->parent_handle = parent_session->vpp_handle;
1990 VDBG (0, "session handle %u: connecting to session %u [0x%llx]",
1991 session_handle, parent_session_handle, parent_session->vpp_handle);
1994 * Send connect request and wait for reply from vpp
1996 vcl_send_session_connect (wrk, session);
1997 rv = vppcom_wait_for_session_state_change (session_index, VCL_STATE_READY,
1998 vcm->cfg.session_timeout);
2000 session->listener_index = parent_session_index;
2001 parent_session = vcl_session_get_w_handle (wrk, parent_session_handle);
2003 parent_session->n_accepted_sessions++;
2005 session = vcl_session_get (wrk, session_index);
2006 VDBG (0, "session %u [0x%llx]: connect %s!", session->session_index,
2007 session->vpp_handle, rv ? "failed" : "succeeded");
2013 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
2016 vcl_worker_t *wrk = vcl_worker_get_current ();
2017 int rv, n_read = 0, is_nonblocking;
2018 vcl_session_t *s = 0;
2019 svm_fifo_t *rx_fifo;
2024 if (PREDICT_FALSE (!buf))
2025 return VPPCOM_EFAULT;
2027 s = vcl_session_get_w_handle (wrk, session_handle);
2028 if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP)))
2029 return VPPCOM_EBADFD;
2031 if (PREDICT_FALSE (!vcl_session_is_open (s)))
2033 VDBG (0, "session %u[0x%llx] is not open! state 0x%x (%s)",
2034 s->session_index, s->vpp_handle, s->session_state,
2035 vcl_session_state_str (s->session_state));
2036 return vcl_session_closed_error (s);
2039 if (PREDICT_FALSE (s->flags & VCL_SESSION_F_RD_SHUTDOWN))
2041 /* Vpp would ack the incoming data and enqueue it for reading.
2042 * So even if SHUT_RD is set, we can still read() the data if
2043 * the session is ready.
2045 if (!vcl_session_read_ready (s))
2051 is_nonblocking = vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK);
2052 is_ct = vcl_session_is_ct (s);
2053 mq = wrk->app_event_queue;
2054 rx_fifo = is_ct ? s->ct_rx_fifo : s->rx_fifo;
2055 s->flags &= ~VCL_SESSION_F_HAS_RX_EVT;
2057 if (svm_fifo_is_empty_cons (rx_fifo))
2060 svm_fifo_unset_event (s->rx_fifo);
2061 svm_fifo_unset_event (rx_fifo);
2064 if (vcl_session_is_closing (s))
2065 return vcl_session_closing_error (s);
2066 return VPPCOM_EWOULDBLOCK;
2068 while (svm_fifo_is_empty_cons (rx_fifo))
2070 if (vcl_session_is_closing (s))
2071 return vcl_session_closing_error (s);
2074 svm_fifo_unset_event (s->rx_fifo);
2075 svm_fifo_unset_event (rx_fifo);
2077 svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
2078 vcl_worker_flush_mq_events (wrk);
2085 rv = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
2087 rv = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
2096 if (svm_fifo_is_empty_cons (rx_fifo))
2099 svm_fifo_unset_event (s->rx_fifo);
2100 svm_fifo_unset_event (rx_fifo);
2101 if (!svm_fifo_is_empty_cons (rx_fifo)
2102 && svm_fifo_set_event (rx_fifo) && is_nonblocking)
2104 vec_add2 (wrk->unhandled_evts_vector, e, 1);
2105 e->event_type = SESSION_IO_EVT_RX;
2106 e->session_index = s->session_index;
2109 else if (PREDICT_FALSE (rv < n && !s->is_dgram))
2111 /* More data enqueued while reading. Try to drain it
2112 * or fill the buffer. Avoid doing that for dgrams */
2118 if (PREDICT_FALSE (svm_fifo_needs_deq_ntf (rx_fifo, n_read)))
2120 svm_fifo_clear_deq_ntf (rx_fifo);
2121 app_send_io_evt_to_vpp (s->vpp_evt_q,
2122 s->rx_fifo->shr->master_session_index,
2123 SESSION_IO_EVT_RX, SVM_Q_WAIT);
2126 VDBG (2, "session %u[0x%llx]: read %d bytes from (%p)", s->session_index,
2127 s->vpp_handle, n_read, rx_fifo);
2133 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
2135 return (vppcom_session_read_internal (session_handle, buf, n, 0));
2139 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
2141 return (vppcom_session_read_internal (session_handle, buf, n, 1));
2145 vppcom_session_read_segments (uint32_t session_handle,
2146 vppcom_data_segment_t * ds, uint32_t n_segments,
2149 vcl_worker_t *wrk = vcl_worker_get_current ();
2150 int n_read = 0, is_nonblocking;
2151 vcl_session_t *s = 0;
2152 svm_fifo_t *rx_fifo;
2156 s = vcl_session_get_w_handle (wrk, session_handle);
2157 if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP)))
2158 return VPPCOM_EBADFD;
2160 if (PREDICT_FALSE (!vcl_session_is_open (s)))
2161 return vcl_session_closed_error (s);
2163 is_nonblocking = vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK);
2164 is_ct = vcl_session_is_ct (s);
2165 mq = wrk->app_event_queue;
2166 rx_fifo = is_ct ? s->ct_rx_fifo : s->rx_fifo;
2167 s->flags &= ~VCL_SESSION_F_HAS_RX_EVT;
2169 if (svm_fifo_is_empty_cons (rx_fifo))
2172 svm_fifo_unset_event (s->rx_fifo);
2173 svm_fifo_unset_event (rx_fifo);
2176 if (vcl_session_is_closing (s))
2177 return vcl_session_closing_error (s);
2178 return VPPCOM_EWOULDBLOCK;
2180 while (svm_fifo_is_empty_cons (rx_fifo))
2182 if (vcl_session_is_closing (s))
2183 return vcl_session_closing_error (s);
2186 svm_fifo_unset_event (s->rx_fifo);
2187 svm_fifo_unset_event (rx_fifo);
2189 svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
2190 vcl_worker_flush_mq_events (wrk);
2194 n_read = svm_fifo_segments (rx_fifo, s->rx_bytes_pending,
2195 (svm_fifo_seg_t *) ds, &n_segments, max_bytes);
2197 return VPPCOM_EAGAIN;
2199 if (svm_fifo_max_dequeue_cons (rx_fifo) == n_read)
2202 svm_fifo_unset_event (s->rx_fifo);
2203 svm_fifo_unset_event (rx_fifo);
2204 if (svm_fifo_max_dequeue_cons (rx_fifo) != n_read
2205 && svm_fifo_set_event (rx_fifo)
2206 && vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
2209 vec_add2 (wrk->unhandled_evts_vector, e, 1);
2210 e->event_type = SESSION_IO_EVT_RX;
2211 e->session_index = s->session_index;
2215 s->rx_bytes_pending += n_read;
2220 vppcom_session_free_segments (uint32_t session_handle, uint32_t n_bytes)
2222 vcl_worker_t *wrk = vcl_worker_get_current ();
2226 s = vcl_session_get_w_handle (wrk, session_handle);
2227 if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP)))
2230 is_ct = vcl_session_is_ct (s);
2231 svm_fifo_dequeue_drop (is_ct ? s->ct_rx_fifo : s->rx_fifo, n_bytes);
2233 ASSERT (s->rx_bytes_pending >= n_bytes);
2234 s->rx_bytes_pending -= n_bytes;
2238 vcl_fifo_is_writeable (svm_fifo_t * f, u32 len, u8 is_dgram)
2240 u32 max_enq = svm_fifo_max_enqueue_prod (f);
2242 return max_enq >= (sizeof (session_dgram_hdr_t) + len);
2248 vppcom_session_write_inline (vcl_worker_t *wrk, vcl_session_t *s, void *buf,
2249 size_t n, u8 is_flush, u8 is_dgram)
2251 int n_write, is_nonblocking;
2252 session_evt_type_t et;
2253 svm_fifo_t *tx_fifo;
2257 /* Accept zero length writes but just return */
2258 if (PREDICT_FALSE (!n))
2261 if (PREDICT_FALSE (!buf))
2262 return VPPCOM_EFAULT;
2264 if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
2266 VDBG (0, "ERROR: session %u [0x%llx]: cannot write to an epoll"
2267 " session!", s->session_index, s->vpp_handle);
2268 return VPPCOM_EBADFD;
2271 if (PREDICT_FALSE (!vcl_session_is_open (s)))
2273 VDBG (1, "session %u [0x%llx]: is not open! state 0x%x (%s)",
2274 s->session_index, s->vpp_handle, s->session_state,
2275 vcl_session_state_str (s->session_state));
2276 return vcl_session_closed_error (s);;
2279 if (PREDICT_FALSE (s->flags & VCL_SESSION_F_WR_SHUTDOWN))
2281 VDBG (1, "session %u [0x%llx]: is shutdown! state 0x%x (%s)",
2282 s->session_index, s->vpp_handle, s->session_state,
2283 vcl_session_state_str (s->session_state));
2284 return VPPCOM_EPIPE;
2287 is_ct = vcl_session_is_ct (s);
2288 tx_fifo = is_ct ? s->ct_tx_fifo : s->tx_fifo;
2289 is_nonblocking = vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK);
2291 mq = wrk->app_event_queue;
2292 if (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram))
2296 return VPPCOM_EWOULDBLOCK;
2298 while (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram))
2300 svm_fifo_add_want_deq_ntf (tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
2301 if (vcl_session_is_closing (s))
2302 return vcl_session_closing_error (s);
2304 svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
2305 vcl_worker_flush_mq_events (wrk);
2309 et = SESSION_IO_EVT_TX;
2310 if (is_flush && !is_ct)
2311 et = SESSION_IO_EVT_TX_FLUSH;
2315 et = vcl_session_dgram_tx_evt (s, et);
2317 app_send_dgram_raw_gso (tx_fifo, &s->transport, s->vpp_evt_q, buf, n,
2318 s->gso_size, et, 0 /* do_evt */, SVM_Q_WAIT);
2322 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
2323 0 /* do_evt */, SVM_Q_WAIT);
2326 if (svm_fifo_set_event (s->tx_fifo))
2327 app_send_io_evt_to_vpp (
2328 s->vpp_evt_q, s->tx_fifo->shr->master_session_index, et, SVM_Q_WAIT);
2330 /* The underlying fifo segment can run out of memory */
2331 if (PREDICT_FALSE (n_write < 0))
2332 return VPPCOM_EAGAIN;
2334 VDBG (2, "session %u [0x%llx]: wrote %d bytes", s->session_index,
2335 s->vpp_handle, n_write);
2341 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
2343 vcl_worker_t *wrk = vcl_worker_get_current ();
2346 s = vcl_session_get_w_handle (wrk, session_handle);
2347 if (PREDICT_FALSE (!s))
2348 return VPPCOM_EBADFD;
2350 return vppcom_session_write_inline (wrk, s, buf, n, 0 /* is_flush */,
2351 s->is_dgram ? 1 : 0);
2355 vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n)
2357 vcl_worker_t *wrk = vcl_worker_get_current ();
2360 s = vcl_session_get_w_handle (wrk, session_handle);
2361 if (PREDICT_FALSE (!s))
2362 return VPPCOM_EBADFD;
2364 return vppcom_session_write_inline (wrk, s, buf, n, 1 /* is_flush */,
2365 s->is_dgram ? 1 : 0);
2368 #define vcl_fifo_rx_evt_valid_or_break(_s) \
2369 if (PREDICT_FALSE (!_s->rx_fifo)) \
2371 if (PREDICT_FALSE (svm_fifo_is_empty (_s->rx_fifo))) \
2373 if (!vcl_session_is_ct (_s)) \
2375 svm_fifo_unset_event (_s->rx_fifo); \
2376 if (svm_fifo_is_empty (_s->rx_fifo)) \
2379 else if (svm_fifo_is_empty (_s->ct_rx_fifo)) \
2381 svm_fifo_unset_event (_s->rx_fifo); /* rx evts on actual fifo*/ \
2382 if (svm_fifo_is_empty (_s->ct_rx_fifo)) \
2388 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2389 unsigned long n_bits, unsigned long *read_map,
2390 unsigned long *write_map,
2391 unsigned long *except_map, u32 * bits_set)
2393 session_disconnected_msg_t *disconnected_msg;
2394 session_connected_msg_t *connected_msg;
2398 switch (e->event_type)
2400 case SESSION_IO_EVT_RX:
2401 sid = e->session_index;
2402 s = vcl_session_get (wrk, sid);
2403 if (!s || !vcl_session_is_open (s))
2405 vcl_fifo_rx_evt_valid_or_break (s);
2406 if (sid < n_bits && read_map)
2408 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2412 case SESSION_IO_EVT_TX:
2413 sid = e->session_index;
2414 s = vcl_session_get (wrk, sid);
2415 if (!s || !vcl_session_is_open (s))
2417 if (sid < n_bits && write_map)
2419 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2423 case SESSION_CTRL_EVT_ACCEPTED:
2425 s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
2427 s = vcl_session_get (wrk, e->session_index);
2430 sid = s->session_index;
2431 if (sid < n_bits && read_map)
2433 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2437 case SESSION_CTRL_EVT_CONNECTED:
2440 connected_msg = (session_connected_msg_t *) e->data;
2441 sid = vcl_session_connected_handler (wrk, connected_msg);
2444 sid = e->session_index;
2445 if (sid == VCL_INVALID_SESSION_INDEX)
2447 if (!(sid < n_bits && write_map))
2449 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2451 s = vcl_session_get (wrk, sid);
2452 /* We didn't have a fifo when the event was added */
2453 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
2455 case SESSION_CTRL_EVT_DISCONNECTED:
2458 disconnected_msg = (session_disconnected_msg_t *) e->data;
2459 s = vcl_session_disconnected_handler (wrk, disconnected_msg);
2465 s = vcl_session_get (wrk, e->session_index);
2466 s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT;
2468 if (vcl_session_is_closed (s))
2470 if (s && (s->flags & VCL_SESSION_F_PENDING_FREE))
2471 vcl_session_free (wrk, s);
2474 sid = s->session_index;
2475 if (sid < n_bits && except_map)
2477 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2481 case SESSION_CTRL_EVT_RESET:
2485 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2486 s = vcl_session_get (wrk, sid);
2490 sid = e->session_index;
2491 s = vcl_session_get (wrk, sid);
2492 s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT;
2494 if (vcl_session_is_closed (s))
2496 if (s && (s->flags & VCL_SESSION_F_PENDING_FREE))
2497 vcl_session_free (wrk, s);
2500 if (sid < n_bits && except_map)
2502 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2506 case SESSION_CTRL_EVT_UNLISTEN_REPLY:
2507 vcl_session_unlisten_reply_handler (wrk, e->data);
2509 case SESSION_CTRL_EVT_MIGRATED:
2510 vcl_session_migrated_handler (wrk, e->data);
2512 case SESSION_CTRL_EVT_CLEANUP:
2513 vcl_session_cleanup_handler (wrk, e->data);
2515 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
2516 vcl_session_worker_update_reply_handler (wrk, e->data);
2518 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
2519 vcl_session_req_worker_update_handler (wrk, e->data);
2521 case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
2522 vcl_session_app_add_segment_handler (wrk, e->data);
2524 case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
2525 vcl_session_app_del_segment_handler (wrk, e->data);
2527 case SESSION_CTRL_EVT_APP_WRK_RPC:
2528 vcl_worker_rpc_handler (wrk, e->data);
2531 clib_warning ("unhandled: %u", e->event_type);
2537 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2538 unsigned long n_bits, unsigned long *read_map,
2539 unsigned long *write_map, unsigned long *except_map,
2540 double time_to_wait, u32 * bits_set)
2542 svm_msg_q_msg_t *msg;
2546 if (svm_msg_q_is_empty (mq))
2553 else if (time_to_wait < 0)
2554 svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
2557 if (svm_msg_q_timedwait (mq, time_to_wait))
2561 vcl_mq_dequeue_batch (wrk, mq, ~0);
2563 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2565 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2566 e = svm_msg_q_msg_data (mq, msg);
2567 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
2568 except_map, bits_set);
2569 svm_msg_q_free_msg (mq, msg);
2571 vec_reset_length (wrk->mq_msg_vector);
2572 vcl_handle_pending_wrk_updates (wrk);
2577 vppcom_select_condvar (vcl_worker_t * wrk, int n_bits,
2578 vcl_si_set * read_map, vcl_si_set * write_map,
2579 vcl_si_set * except_map, double time_to_wait,
2582 double wait = 0, start = 0;
2586 wait = time_to_wait;
2587 start = clib_time_now (&wrk->clib_time);
2592 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2593 write_map, except_map, wait, bits_set);
2599 wait = wait - (clib_time_now (&wrk->clib_time) - start);
2607 vppcom_select_eventfd (vcl_worker_t * wrk, int n_bits,
2608 vcl_si_set * read_map, vcl_si_set * write_map,
2609 vcl_si_set * except_map, double time_to_wait,
2612 vcl_mq_evt_conn_t *mqc;
2613 int __clib_unused n_read;
2617 if (PREDICT_FALSE (wrk->api_client_handle == ~0))
2619 vcl_api_retry_attach (wrk);
2623 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2624 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2625 vec_len (wrk->mq_events), time_to_wait);
2626 for (i = 0; i < n_mq_evts; i++)
2628 if (PREDICT_FALSE (wrk->mq_events[i].data.u32 == ~0))
2630 vcl_api_handle_disconnect (wrk);
2634 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2635 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2636 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2637 except_map, 0, bits_set);
2640 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2644 vppcom_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map,
2645 vcl_si_set * except_map, double time_to_wait)
2647 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2648 vcl_worker_t *wrk = vcl_worker_get_current ();
2649 vcl_session_t *s = 0;
2652 if (n_bits && read_map)
2654 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2655 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2656 vec_len (wrk->rd_bitmap) * sizeof (vcl_si_set));
2657 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (vcl_si_set));
2659 if (n_bits && write_map)
2661 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2662 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2663 vec_len (wrk->wr_bitmap) * sizeof (vcl_si_set));
2664 memset (write_map, 0, vec_len (wrk->wr_bitmap) * sizeof (vcl_si_set));
2666 if (n_bits && except_map)
2668 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2669 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2670 vec_len (wrk->ex_bitmap) * sizeof (vcl_si_set));
2671 memset (except_map, 0, vec_len (wrk->ex_bitmap) * sizeof (vcl_si_set));
2680 clib_bitmap_foreach (sid, wrk->wr_bitmap)
2682 if (!(s = vcl_session_get (wrk, sid)))
2684 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2689 if (vcl_session_write_ready (s))
2691 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2696 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF);
2704 clib_bitmap_foreach (sid, wrk->rd_bitmap)
2706 if (!(s = vcl_session_get (wrk, sid)))
2708 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2713 if (vcl_session_read_ready (s))
2715 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2722 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2724 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2725 read_map, write_map, except_map, &bits_set);
2727 vec_reset_length (wrk->unhandled_evts_vector);
2729 if (vcm->cfg.use_mq_eventfd)
2730 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2731 time_to_wait, &bits_set);
2733 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2734 time_to_wait, &bits_set);
2740 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_handle)
2742 vppcom_epoll_t *vep;
2743 u32 sh = vep_handle;
2746 if (VPPCOM_DEBUG <= 3)
2749 s = vcl_session_get_w_handle (wrk, vep_handle);
2750 if (PREDICT_FALSE (!s))
2752 VDBG (0, "ERROR: Invalid vep_sh (%u)!", vep_handle);
2755 if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP)))
2757 VDBG (0, "ERROR: vep_sh (%u) is not a vep!", vep_handle);
2761 VDBG (0, "vep_sh (%u): Dumping epoll chain\n"
2764 " is_vep_session = %u\n"
2765 " next_sh = 0x%x (%u)\n"
2766 "}\n", vep_handle, s->flags & VCL_SESSION_F_IS_VEP,
2767 s->flags & VCL_SESSION_F_IS_VEP_SESSION, vep->next_sh, vep->next_sh);
2769 for (sh = vep->next_sh; sh != ~0; sh = vep->next_sh)
2771 s = vcl_session_get_w_handle (wrk, sh);
2772 if (PREDICT_FALSE (!s))
2774 VDBG (0, "ERROR: Invalid sh (%u)!", sh);
2777 if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
2779 VDBG (0, "ERROR: sh (%u) is a vep!", vep_handle);
2781 else if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION)))
2783 VDBG (0, "ERROR: sh (%u) is not a vep session handle!", sh);
2787 if (PREDICT_FALSE (vep->vep_sh != vep_handle))
2788 VDBG (0, "ERROR: session (%u) vep_sh (%u) != vep_sh (%u)!",
2789 sh, s->vep.vep_sh, vep_handle);
2790 if (s->flags & VCL_SESSION_F_IS_VEP_SESSION)
2792 VDBG (0, "vep_sh[%u]: sh 0x%x (%u)\n"
2794 " next_sh = 0x%x (%u)\n"
2795 " prev_sh = 0x%x (%u)\n"
2796 " vep_sh = 0x%x (%u)\n"
2797 " ev.events = 0x%x\n"
2798 " ev.data.u64 = 0x%llx\n"
2801 vep_handle, sh, sh, vep->next_sh, vep->next_sh, vep->prev_sh,
2802 vep->prev_sh, vep->vep_sh, vep->vep_sh, vep->ev.events,
2803 vep->ev.data.u64, vep->et_mask);
2808 VDBG (0, "vep_sh (%u): Dump complete!\n", vep_handle);
2812 vppcom_epoll_create (void)
2814 vcl_worker_t *wrk = vcl_worker_get_current ();
2815 vcl_session_t *vep_session;
2817 vep_session = vcl_session_alloc (wrk);
2819 vep_session->flags |= VCL_SESSION_F_IS_VEP;
2820 vep_session->vep.vep_sh = ~0;
2821 vep_session->vep.next_sh = ~0;
2822 vep_session->vep.prev_sh = ~0;
2823 vep_session->vpp_handle = ~0;
2825 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_session->session_index);
2826 VDBG (0, "Created vep_idx %u", vep_session->session_index);
2828 return vcl_session_handle (vep_session);
2832 vcl_epoll_ctl_add_unhandled_event (vcl_worker_t *wrk, vcl_session_t *s,
2833 u8 is_epollet, session_evt_type_t evt)
2837 if (s->vep.lt_next == VCL_INVALID_SESSION_INDEX)
2838 vcl_epoll_lt_add (wrk, s);
2842 session_event_t e = { 0 };
2843 e.session_index = s->session_index;
2845 if (evt == SESSION_IO_EVT_RX)
2846 s->flags &= ~VCL_SESSION_F_HAS_RX_EVT;
2847 vec_add1 (wrk->unhandled_evts_vector, e);
2851 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2852 struct epoll_event *event)
2854 vcl_worker_t *wrk = vcl_worker_get_current ();
2855 int rv = VPPCOM_OK, add_evt = 0;
2856 vcl_session_t *vep_session;
2859 if (vep_handle == session_handle)
2861 VDBG (0, "vep_sh == session handle (%u)!", vep_handle);
2862 return VPPCOM_EINVAL;
2865 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2866 if (PREDICT_FALSE (!vep_session))
2868 VDBG (0, "Invalid vep_sh (%u)!", vep_handle);
2869 return VPPCOM_EBADFD;
2871 if (PREDICT_FALSE (!(vep_session->flags & VCL_SESSION_F_IS_VEP)))
2873 VDBG (0, "vep_sh (%u) is not a vep!", vep_handle);
2874 return VPPCOM_EINVAL;
2877 ASSERT (vep_session->vep.vep_sh == ~0);
2878 ASSERT (vep_session->vep.prev_sh == ~0);
2880 s = vcl_session_get_w_handle (wrk, session_handle);
2881 if (PREDICT_FALSE (!s))
2883 VDBG (0, "Invalid session_handle (%u)!", session_handle);
2884 return VPPCOM_EBADFD;
2886 if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
2888 VDBG (0, "session_handle (%u) is a vep!", vep_handle);
2889 return VPPCOM_EINVAL;
2895 if (PREDICT_FALSE (!event))
2897 VDBG (0, "EPOLL_CTL_ADD: NULL pointer to epoll_event structure!");
2898 return VPPCOM_EINVAL;
2900 if (s->flags & VCL_SESSION_F_IS_VEP_SESSION)
2902 VDBG (0, "EPOLL_CTL_ADD: %u already epolled!", s->session_index);
2906 if (vep_session->vep.next_sh != ~0)
2908 vcl_session_t *next_session;
2909 next_session = vcl_session_get_w_handle (wrk,
2910 vep_session->vep.next_sh);
2911 if (PREDICT_FALSE (!next_session))
2913 VDBG (0, "EPOLL_CTL_ADD: Invalid vep.next_sh (%u) on "
2914 "vep_idx (%u)!", vep_session->vep.next_sh, vep_handle);
2915 return VPPCOM_EBADFD;
2917 ASSERT (next_session->vep.prev_sh == vep_handle);
2918 next_session->vep.prev_sh = session_handle;
2920 s->vep.next_sh = vep_session->vep.next_sh;
2921 s->vep.prev_sh = vep_handle;
2922 s->vep.vep_sh = vep_handle;
2923 s->vep.et_mask = VEP_DEFAULT_ET_MASK;
2924 s->vep.lt_next = VCL_INVALID_SESSION_INDEX;
2926 s->vep.ev.events |= EPOLLHUP | EPOLLERR;
2927 s->flags &= ~VCL_SESSION_F_IS_VEP;
2928 s->flags |= VCL_SESSION_F_IS_VEP_SESSION;
2929 vep_session->vep.next_sh = session_handle;
2931 if ((event->events & EPOLLOUT))
2933 int write_ready = vcl_session_write_ready (s);
2935 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
2936 if (write_ready > 0)
2938 /* Generate EPOLLOUT if tx fifo not full */
2939 vcl_epoll_ctl_add_unhandled_event (
2940 wrk, s, event->events & EPOLLET, SESSION_IO_EVT_TX);
2945 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF);
2948 /* Generate EPOLLIN if rx fifo has data */
2949 if ((event->events & EPOLLIN) && (vcl_session_read_ready (s) > 0))
2951 vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET,
2955 if (!add_evt && vcl_session_is_closing (s))
2957 session_event_t e = { 0 };
2958 if (s->session_state == VCL_STATE_VPP_CLOSING)
2959 e.event_type = SESSION_CTRL_EVT_DISCONNECTED;
2961 e.event_type = SESSION_CTRL_EVT_RESET;
2962 e.session_index = s->session_index;
2964 vec_add1 (wrk->unhandled_evts_vector, e);
2966 VDBG (1, "EPOLL_CTL_ADD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
2967 vep_handle, session_handle, event->events, event->data.u64);
2968 vcl_evt (VCL_EVT_EPOLL_CTLADD, s, event->events, event->data.u64);
2972 if (PREDICT_FALSE (!event))
2974 VDBG (0, "EPOLL_CTL_MOD: NULL pointer to epoll_event structure!");
2978 else if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION)))
2980 VDBG (0, "sh %u EPOLL_CTL_MOD: not a vep session!", session_handle);
2984 else if (PREDICT_FALSE (s->vep.vep_sh != vep_handle))
2986 VDBG (0, "EPOLL_CTL_MOD: sh %u vep_sh (%u) != vep_sh (%u)!",
2987 session_handle, s->vep.vep_sh, vep_handle);
2992 /* Generate EPOLLOUT if session write ready and event was not on */
2993 if ((event->events & EPOLLOUT) && !(s->vep.ev.events & EPOLLOUT))
2995 /* Fifo size load acq synchronized with update store rel */
2996 int write_ready = vcl_session_write_ready (s);
2998 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
2999 if (write_ready > 0)
3000 vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET,
3003 /* Request deq ntf in case dequeue happened while updating flag */
3004 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF);
3006 else if (!(event->events & EPOLLOUT))
3007 vcl_session_del_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
3009 /* Generate EPOLLIN if session read ready and event was not on */
3010 if ((event->events & EPOLLIN) && !(s->vep.ev.events & EPOLLIN) &&
3011 (vcl_session_read_ready (s) > 0))
3013 vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET,
3016 s->vep.et_mask = VEP_DEFAULT_ET_MASK;
3018 s->vep.ev.events |= EPOLLHUP | EPOLLERR;
3020 VDBG (1, "EPOLL_CTL_MOD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
3021 vep_handle, session_handle, event->events, event->data.u64);
3025 if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION)))
3027 VDBG (0, "EPOLL_CTL_DEL: %u not a vep session!", session_handle);
3031 else if (PREDICT_FALSE (s->vep.vep_sh != vep_handle))
3033 VDBG (0, "EPOLL_CTL_DEL: sh %u vep_sh (%u) != vep_sh (%u)!",
3034 session_handle, s->vep.vep_sh, vep_handle);
3039 if (s->vep.prev_sh == vep_handle)
3040 vep_session->vep.next_sh = s->vep.next_sh;
3043 vcl_session_t *prev_session;
3044 prev_session = vcl_session_get_w_handle (wrk, s->vep.prev_sh);
3045 if (PREDICT_FALSE (!prev_session))
3047 VDBG (0, "EPOLL_CTL_DEL: Invalid prev_sh (%u) on sh (%u)!",
3048 s->vep.prev_sh, session_handle);
3049 return VPPCOM_EBADFD;
3051 ASSERT (prev_session->vep.next_sh == session_handle);
3052 prev_session->vep.next_sh = s->vep.next_sh;
3054 if (s->vep.next_sh != ~0)
3056 vcl_session_t *next_session;
3057 next_session = vcl_session_get_w_handle (wrk, s->vep.next_sh);
3058 if (PREDICT_FALSE (!next_session))
3060 VDBG (0, "EPOLL_CTL_DEL: Invalid next_sh (%u) on sh (%u)!",
3061 s->vep.next_sh, session_handle);
3062 return VPPCOM_EBADFD;
3064 ASSERT (next_session->vep.prev_sh == session_handle);
3065 next_session->vep.prev_sh = s->vep.prev_sh;
3068 if (s->vep.lt_next != VCL_INVALID_SESSION_INDEX)
3069 vcl_epoll_lt_del (wrk, s);
3071 memset (&s->vep, 0, sizeof (s->vep));
3072 s->vep.next_sh = ~0;
3073 s->vep.prev_sh = ~0;
3075 s->vep.lt_next = VCL_INVALID_SESSION_INDEX;
3076 s->flags &= ~VCL_SESSION_F_IS_VEP_SESSION;
3078 if (vcl_session_is_open (s))
3079 vcl_session_del_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
3081 VDBG (1, "EPOLL_CTL_DEL: vep_idx %u, sh %u!", vep_handle,
3083 vcl_evt (VCL_EVT_EPOLL_CTLDEL, s, vep_sh);
3087 VDBG (0, "Invalid operation (%d)!", op);
3091 vep_verify_epoll_chain (wrk, vep_handle);
3098 vcl_ep_session_needs_evt (vcl_session_t *s, u32 evt)
3100 /* No event if not epolled / events reset on hup or level-trigger on */
3101 return ((s->vep.ev.events & evt) &&
3102 s->vep.lt_next == VCL_INVALID_SESSION_INDEX);
3106 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
3107 struct epoll_event *events, u32 * num_ev)
3109 session_disconnected_msg_t *disconnected_msg;
3110 session_connected_msg_t *connected_msg;
3111 u32 sid = ~0, session_events;
3112 u64 session_evt_data = ~0;
3116 switch (e->event_type)
3118 case SESSION_IO_EVT_RX:
3119 sid = e->session_index;
3120 s = vcl_session_get (wrk, sid);
3121 if (vcl_session_is_closed (s))
3123 vcl_fifo_rx_evt_valid_or_break (s);
3124 if (!vcl_ep_session_needs_evt (s, EPOLLIN) ||
3125 (s->flags & VCL_SESSION_F_HAS_RX_EVT))
3127 session_events = s->vep.ev.events;
3129 events[*num_ev].events = EPOLLIN;
3130 session_evt_data = s->vep.ev.data.u64;
3131 s->flags |= VCL_SESSION_F_HAS_RX_EVT;
3133 case SESSION_IO_EVT_TX:
3134 sid = e->session_index;
3135 s = vcl_session_get (wrk, sid);
3136 if (!s || !vcl_session_is_open (s))
3138 svm_fifo_reset_has_deq_ntf (vcl_session_is_ct (s) ? s->ct_tx_fifo :
3140 if (!vcl_ep_session_needs_evt (s, EPOLLOUT))
3142 session_events = s->vep.ev.events;
3144 events[*num_ev].events = EPOLLOUT;
3145 session_evt_data = s->vep.ev.data.u64;
3147 case SESSION_CTRL_EVT_ACCEPTED:
3149 s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
3151 s = vcl_session_get (wrk, e->session_index);
3152 if (!s || !vcl_ep_session_needs_evt (s, EPOLLIN))
3154 sid = s->session_index;
3155 session_events = s->vep.ev.events;
3157 events[*num_ev].events = EPOLLIN;
3158 session_evt_data = s->vep.ev.data.u64;
3160 case SESSION_CTRL_EVT_CONNECTED:
3163 connected_msg = (session_connected_msg_t *) e->data;
3164 sid = vcl_session_connected_handler (wrk, connected_msg);
3167 sid = e->session_index;
3168 s = vcl_session_get (wrk, sid);
3169 if (vcl_session_is_closed (s) || !vcl_ep_session_needs_evt (s, EPOLLOUT))
3171 /* We didn't have a fifo when the event was added */
3172 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
3174 session_events = s->vep.ev.events;
3175 /* Generate EPOLLOUT because there's no connected event */
3176 events[*num_ev].events = EPOLLOUT;
3177 session_evt_data = s->vep.ev.data.u64;
3178 if (s->session_state == VCL_STATE_DETACHED)
3180 events[*num_ev].events |= EPOLLHUP;
3181 s->vep.ev.events = 0;
3184 case SESSION_CTRL_EVT_DISCONNECTED:
3187 disconnected_msg = (session_disconnected_msg_t *) e->data;
3188 s = vcl_session_disconnected_handler (wrk, disconnected_msg);
3192 s = vcl_session_get (wrk, e->session_index);
3193 s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT;
3195 if (vcl_session_is_closed (s) || !vcl_ep_session_needs_evt (s, EPOLLHUP))
3197 if (s && (s->flags & VCL_SESSION_F_PENDING_FREE))
3198 vcl_session_free (wrk, s);
3201 sid = s->session_index;
3202 session_events = s->vep.ev.events;
3204 if (EPOLLRDHUP & session_events)
3206 /* If app can distinguish between RDHUP and HUP,
3207 * we make finer control */
3208 events[*num_ev].events = EPOLLRDHUP;
3209 if (s->flags & VCL_SESSION_F_WR_SHUTDOWN)
3211 events[*num_ev].events |= EPOLLHUP;
3216 events[*num_ev].events = EPOLLHUP;
3218 session_evt_data = s->vep.ev.data.u64;
3219 s->vep.ev.events = 0;
3221 case SESSION_CTRL_EVT_BOUND:
3222 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
3224 case SESSION_CTRL_EVT_RESET:
3228 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
3229 s = vcl_session_get (wrk, sid);
3233 sid = e->session_index;
3234 s = vcl_session_get (wrk, sid);
3235 s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT;
3237 if (vcl_session_is_closed (s) || !vcl_ep_session_needs_evt (s, EPOLLHUP))
3239 if (s && (s->flags & VCL_SESSION_F_PENDING_FREE))
3240 vcl_session_free (wrk, s);
3243 session_events = s->vep.ev.events;
3245 events[*num_ev].events = EPOLLERR | EPOLLHUP;
3246 if ((EPOLLRDHUP & session_events) &&
3247 (s->flags & VCL_SESSION_F_RD_SHUTDOWN))
3249 events[*num_ev].events |= EPOLLRDHUP;
3251 if ((EPOLLIN & session_events) && (s->flags & VCL_SESSION_F_RD_SHUTDOWN))
3253 events[*num_ev].events |= EPOLLIN;
3255 session_evt_data = s->vep.ev.data.u64;
3256 s->vep.ev.events = 0;
3258 case SESSION_CTRL_EVT_UNLISTEN_REPLY:
3259 vcl_session_unlisten_reply_handler (wrk, e->data);
3261 case SESSION_CTRL_EVT_MIGRATED:
3262 vcl_session_migrated_handler (wrk, e->data);
3264 case SESSION_CTRL_EVT_CLEANUP:
3265 vcl_session_cleanup_handler (wrk, e->data);
3267 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
3268 vcl_session_req_worker_update_handler (wrk, e->data);
3270 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
3271 vcl_session_worker_update_reply_handler (wrk, e->data);
3273 case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
3274 vcl_session_app_add_segment_handler (wrk, e->data);
3276 case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
3277 vcl_session_app_del_segment_handler (wrk, e->data);
3279 case SESSION_CTRL_EVT_APP_WRK_RPC:
3280 vcl_worker_rpc_handler (wrk, e->data);
3283 VDBG (0, "unhandled: %u", e->event_type);
3289 ASSERT (s->flags & VCL_SESSION_F_IS_VEP_SESSION);
3290 events[*num_ev].data.u64 = session_evt_data;
3291 if (EPOLLONESHOT & session_events)
3293 s = vcl_session_get (wrk, sid);
3294 if (!(events[*num_ev].events & EPOLLHUP))
3295 s->vep.ev.events = EPOLLHUP | EPOLLERR;
3297 else if (!(EPOLLET & session_events))
3299 s = vcl_session_get (wrk, sid);
3300 if (s->vep.lt_next == VCL_INVALID_SESSION_INDEX)
3301 vcl_epoll_lt_add (wrk, s);
3308 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
3309 struct epoll_event *events, u32 maxevents,
3310 double wait_for_time, u32 * num_ev)
3312 svm_msg_q_msg_t *msg;
3316 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
3317 goto handle_dequeued;
3319 if (svm_msg_q_is_empty (mq))
3323 else if (wait_for_time < 0)
3324 svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
3327 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
3331 ASSERT (maxevents > *num_ev);
3332 vcl_mq_dequeue_batch (wrk, mq, ~0);
3335 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
3337 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
3338 e = svm_msg_q_msg_data (mq, msg);
3339 if (*num_ev < maxevents)
3340 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
3342 vcl_handle_mq_event (wrk, e);
3343 svm_msg_q_free_msg (mq, msg);
3345 vec_reset_length (wrk->mq_msg_vector);
3346 vcl_handle_pending_wrk_updates (wrk);
3351 vppcom_epoll_wait_condvar (vcl_worker_t *wrk, struct epoll_event *events,
3352 int maxevents, u32 n_evts, double timeout_ms)
3359 end = clib_time_now (&wrk->clib_time) + (timeout_ms / 1e3);
3364 vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events, maxevents,
3365 timeout_ms, &n_evts);
3366 if (n_evts || !timeout_ms)
3369 while (end == -1 || clib_time_now (&wrk->clib_time) < end);
3375 vppcom_epoll_wait_eventfd (vcl_worker_t *wrk, struct epoll_event *events,
3376 int maxevents, u32 n_evts, double timeout_ms)
3378 int __clib_unused n_read;
3379 vcl_mq_evt_conn_t *mqc;
3384 if (PREDICT_FALSE (wrk->api_client_handle == ~0))
3386 vcl_api_retry_attach (wrk);
3390 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
3394 end = clib_time_now (&wrk->clib_time) + (timeout_ms / 1e3);
3399 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
3400 vec_len (wrk->mq_events), timeout_ms);
3403 VDBG (0, "epoll_wait error %u", errno);
3407 for (i = 0; i < n_mq_evts; i++)
3409 if (PREDICT_FALSE (wrk->mq_events[i].data.u32 == ~0))
3411 /* api socket was closed */
3412 vcl_api_handle_disconnect (wrk);
3416 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
3417 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
3418 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0,
3422 if (n_evts || !timeout_ms)
3425 while (end == -1 || clib_time_now (&wrk->clib_time) < end);
3431 vcl_epoll_wait_handle_lt (vcl_worker_t *wrk, struct epoll_event *events,
3432 int maxevents, u32 *n_evts)
3434 u32 add_event = 0, evt_flags = 0, next, *to_remove = 0, *si;
3439 ASSERT (wrk->ep_lt_current != VCL_INVALID_SESSION_INDEX);
3440 if (*n_evts >= maxevents)
3443 next = wrk->ep_lt_current;
3446 s = vcl_session_get (wrk, next);
3447 next = s->vep.lt_next;
3449 if (s->vep.ev.events == 0)
3451 vec_add1 (to_remove, s->session_index);
3454 if ((s->vep.ev.events & EPOLLIN) && (rv = vcl_session_read_ready (s)))
3457 evt_flags |= rv > 0 ? EPOLLIN : EPOLLHUP | EPOLLRDHUP;
3458 evt_data = s->vep.ev.data.u64;
3460 if ((s->vep.ev.events & EPOLLOUT) && (rv = vcl_session_write_ready (s)))
3463 evt_flags |= rv > 0 ? EPOLLOUT : EPOLLHUP | EPOLLRDHUP;
3464 evt_data = s->vep.ev.data.u64;
3466 if (!add_event && s->session_state > VCL_STATE_READY)
3469 evt_flags |= EPOLLHUP | EPOLLRDHUP;
3470 evt_data = s->vep.ev.data.u64;
3474 events[*n_evts].events = evt_flags;
3475 events[*n_evts].data.u64 = evt_data;
3476 if (EPOLLONESHOT & s->vep.ev.events)
3477 s->vep.ev.events = EPOLLHUP | EPOLLERR;
3478 if (evt_flags & EPOLLHUP)
3479 s->vep.ev.events = 0;
3483 if (*n_evts == maxevents)
3485 wrk->ep_lt_current = next;
3491 vec_add1 (to_remove, s->session_index);
3494 while (next != wrk->ep_lt_current);
3496 vec_foreach (si, to_remove)
3498 s = vcl_session_get (wrk, *si);
3499 vcl_epoll_lt_del (wrk, s);
3501 vec_free (to_remove);
3505 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
3506 int maxevents, double wait_for_time)
3508 vcl_worker_t *wrk = vcl_worker_get_current ();
3509 vcl_session_t *vep_session;
3513 if (PREDICT_FALSE (maxevents <= 0))
3515 VDBG (0, "ERROR: Invalid maxevents (%d)!", maxevents);
3516 return VPPCOM_EINVAL;
3519 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
3521 return VPPCOM_EBADFD;
3523 if (PREDICT_FALSE (!(vep_session->flags & VCL_SESSION_F_IS_VEP)))
3525 VDBG (0, "ERROR: vep_idx (%u) is not a vep!", vep_handle);
3526 return VPPCOM_EINVAL;
3529 if (vec_len (wrk->unhandled_evts_vector))
3531 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
3533 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
3535 if (n_evts == maxevents)
3537 vec_delete (wrk->unhandled_evts_vector, i + 1, 0);
3541 vec_reset_length (wrk->unhandled_evts_vector);
3544 if (PREDICT_FALSE (wrk->ep_lt_current != VCL_INVALID_SESSION_INDEX))
3545 vcl_epoll_wait_handle_lt (wrk, events, maxevents, &n_evts);
3547 /* Request to only drain unhandled */
3548 if ((int) wait_for_time == -2)
3552 if (vcm->cfg.use_mq_eventfd)
3553 n_evts = vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
3556 n_evts = vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
3563 vppcom_session_attr (uint32_t session_handle, uint32_t op,
3564 void *buffer, uint32_t * buflen)
3566 vcl_worker_t *wrk = vcl_worker_get_current ();
3567 u32 *flags = buffer;
3568 vppcom_endpt_t *ep = buffer;
3569 transport_endpt_attr_t tea;
3570 vcl_session_t *session;
3573 session = vcl_session_get_w_handle (wrk, session_handle);
3575 return VPPCOM_EBADFD;
3579 case VPPCOM_ATTR_GET_NREAD:
3580 rv = vcl_session_read_ready (session);
3581 VDBG (2, "VPPCOM_ATTR_GET_NREAD: sh %u, nread = %d", session_handle,
3585 case VPPCOM_ATTR_GET_NWRITE:
3586 rv = vcl_session_write_ready (session);
3587 VDBG (2, "VPPCOM_ATTR_GET_NWRITE: sh %u, nwrite = %d", session_handle,
3591 case VPPCOM_ATTR_GET_FLAGS:
3592 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
3596 (vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK) ?
3598 *buflen = sizeof (*flags);
3599 VDBG (2, "VPPCOM_ATTR_GET_FLAGS: sh %u, flags = 0x%08x, "
3600 "is_nonblocking = %u", session_handle, *flags,
3601 vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK));
3607 case VPPCOM_ATTR_SET_FLAGS:
3608 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
3610 if (*flags & O_NONBLOCK)
3611 vcl_session_set_attr (session, VCL_SESS_ATTR_NONBLOCK);
3613 vcl_session_clear_attr (session, VCL_SESS_ATTR_NONBLOCK);
3615 VDBG (2, "VPPCOM_ATTR_SET_FLAGS: sh %u, flags = 0x%08x,"
3616 " is_nonblocking = %u", session_handle, *flags,
3617 vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK));
3623 case VPPCOM_ATTR_GET_PEER_ADDR:
3624 if (PREDICT_TRUE (buffer && buflen &&
3625 (*buflen >= sizeof (*ep)) && ep->ip))
3627 ep->is_ip4 = session->transport.is_ip4;
3628 ep->port = session->transport.rmt_port;
3629 if (session->transport.is_ip4)
3630 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3631 sizeof (ip4_address_t));
3633 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3634 sizeof (ip6_address_t));
3635 *buflen = sizeof (*ep);
3637 "VPPCOM_ATTR_GET_PEER_ADDR: sh %u, is_ip4 = %u, "
3638 "addr = %U, port %u",
3639 session_handle, ep->is_ip4, vcl_format_ip46_address,
3640 &session->transport.rmt_ip,
3641 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3642 clib_net_to_host_u16 (ep->port));
3648 case VPPCOM_ATTR_GET_LCL_ADDR:
3649 if (PREDICT_TRUE (buffer && buflen &&
3650 (*buflen >= sizeof (*ep)) && ep->ip))
3652 ep->is_ip4 = session->transport.is_ip4;
3653 ep->port = session->transport.lcl_port;
3654 if (session->transport.is_ip4)
3655 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
3656 sizeof (ip4_address_t));
3658 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
3659 sizeof (ip6_address_t));
3660 *buflen = sizeof (*ep);
3662 "VPPCOM_ATTR_GET_LCL_ADDR: sh %u, is_ip4 = %u, addr = %U"
3664 session_handle, ep->is_ip4, vcl_format_ip46_address,
3665 &session->transport.lcl_ip,
3666 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3667 clib_net_to_host_u16 (ep->port));
3673 case VPPCOM_ATTR_GET_ORIGINAL_DST:
3674 if (!session->transport.is_ip4)
3676 /* now original dst only support ipv4*/
3677 rv = VPPCOM_EAFNOSUPPORT;
3680 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*ep)) &&
3683 ep->is_ip4 = session->transport.is_ip4;
3684 ep->port = session->original_dst_port;
3685 clib_memcpy_fast (ep->ip, &session->original_dst_ip4,
3686 sizeof (ip4_address_t));
3687 *buflen = sizeof (*ep);
3689 "VPPCOM_ATTR_GET_ORIGINAL_DST: sh %u, is_ip4 = %u, addr = %U"
3691 session_handle, ep->is_ip4, vcl_format_ip4_address,
3692 (ip4_address_t *) (&session->original_dst_ip4),
3693 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3694 clib_net_to_host_u16 (ep->port));
3700 case VPPCOM_ATTR_SET_LCL_ADDR:
3701 if (PREDICT_TRUE (buffer && buflen &&
3702 (*buflen >= sizeof (*ep)) && ep->ip))
3704 session->transport.is_ip4 = ep->is_ip4;
3705 session->transport.lcl_port = ep->port;
3706 vcl_ip_copy_from_ep (&session->transport.lcl_ip, ep);
3707 *buflen = sizeof (*ep);
3709 "VPPCOM_ATTR_SET_LCL_ADDR: sh %u, is_ip4 = %u, addr = %U"
3711 session_handle, ep->is_ip4, vcl_format_ip46_address,
3712 &session->transport.lcl_ip,
3713 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3714 clib_net_to_host_u16 (ep->port));
3720 case VPPCOM_ATTR_GET_LIBC_EPFD:
3721 rv = session->libc_epfd;
3722 VDBG (2, "VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d", rv);
3725 case VPPCOM_ATTR_SET_LIBC_EPFD:
3726 if (PREDICT_TRUE (buffer && buflen &&
3727 (*buflen == sizeof (session->libc_epfd))))
3729 session->libc_epfd = *(int *) buffer;
3730 *buflen = sizeof (session->libc_epfd);
3732 VDBG (2, "VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, buflen %d",
3733 session->libc_epfd, *buflen);
3739 case VPPCOM_ATTR_GET_PROTOCOL:
3740 if (buffer && buflen && (*buflen >= sizeof (int)))
3742 *(int *) buffer = session->session_type;
3743 *buflen = sizeof (int);
3745 VDBG (2, "VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
3746 *(int *) buffer, *(int *) buffer ? "UDP" : "TCP", *buflen);
3752 case VPPCOM_ATTR_GET_LISTEN:
3753 if (buffer && buflen && (*buflen >= sizeof (int)))
3755 *(int *) buffer = vcl_session_has_attr (session,
3756 VCL_SESS_ATTR_LISTEN);
3757 *buflen = sizeof (int);
3759 VDBG (2, "VPPCOM_ATTR_GET_LISTEN: %d, buflen %d", *(int *) buffer,
3766 case VPPCOM_ATTR_GET_ERROR:
3767 if (buffer && buflen && (*buflen >= sizeof (int)))
3769 *(int *) buffer = 0;
3770 *buflen = sizeof (int);
3772 VDBG (2, "VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
3773 *(int *) buffer, *buflen);
3779 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
3780 if (buffer && buflen && (*buflen >= sizeof (u32)))
3784 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
3786 svm_fifo_size (session->tx_fifo) :
3787 vcm->cfg.tx_fifo_size);
3788 *buflen = sizeof (u32);
3790 VDBG (2, "VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), buflen %d,"
3791 " #VPP-TBD#", *(size_t *) buffer, *(size_t *) buffer,
3798 case VPPCOM_ATTR_SET_DSCP:
3799 if (buffer && buflen && (*buflen >= sizeof (u8)))
3801 session->dscp = *(u8 *) buffer;
3803 VDBG (2, "VPPCOM_ATTR_SET_DSCP: %u (0x%x), buflen %d,",
3804 *(u8 *) buffer, *(u8 *) buffer, *buflen);
3810 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
3811 if (buffer && buflen && (*buflen == sizeof (u32)))
3814 session->sndbuf_size = *(u32 *) buffer;
3815 VDBG (2, "VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), buflen %d,"
3816 " #VPP-TBD#", session->sndbuf_size, session->sndbuf_size,
3823 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
3824 if (buffer && buflen && (*buflen >= sizeof (u32)))
3828 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
3830 svm_fifo_size (session->rx_fifo) :
3831 vcm->cfg.rx_fifo_size);
3832 *buflen = sizeof (u32);
3834 VDBG (2, "VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), buflen %d, "
3835 "#VPP-TBD#", *(size_t *) buffer, *(size_t *) buffer, *buflen);
3841 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
3842 if (buffer && buflen && (*buflen == sizeof (u32)))
3845 session->rcvbuf_size = *(u32 *) buffer;
3846 VDBG (2, "VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), buflen %d,"
3847 " #VPP-TBD#", session->sndbuf_size, session->sndbuf_size,
3854 case VPPCOM_ATTR_GET_REUSEADDR:
3855 if (buffer && buflen && (*buflen >= sizeof (int)))
3858 *(int *) buffer = vcl_session_has_attr (session,
3859 VCL_SESS_ATTR_REUSEADDR);
3860 *buflen = sizeof (int);
3862 VDBG (2, "VPPCOM_ATTR_GET_REUSEADDR: %d, buflen %d, #VPP-TBD#",
3863 *(int *) buffer, *buflen);
3869 case VPPCOM_ATTR_SET_REUSEADDR:
3870 if (buffer && buflen && (*buflen == sizeof (int)) &&
3871 !vcl_session_has_attr (session, VCL_SESS_ATTR_LISTEN))
3874 if (*(int *) buffer)
3875 vcl_session_set_attr (session, VCL_SESS_ATTR_REUSEADDR);
3877 vcl_session_clear_attr (session, VCL_SESS_ATTR_REUSEADDR);
3879 VDBG (2, "VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d, #VPP-TBD#",
3880 vcl_session_has_attr (session, VCL_SESS_ATTR_REUSEADDR),
3887 case VPPCOM_ATTR_GET_REUSEPORT:
3888 if (buffer && buflen && (*buflen >= sizeof (int)))
3891 *(int *) buffer = vcl_session_has_attr (session,
3892 VCL_SESS_ATTR_REUSEPORT);
3893 *buflen = sizeof (int);
3895 VDBG (2, "VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d, #VPP-TBD#",
3896 *(int *) buffer, *buflen);
3902 case VPPCOM_ATTR_SET_REUSEPORT:
3903 if (buffer && buflen && (*buflen == sizeof (int)) &&
3904 !vcl_session_has_attr (session, VCL_SESS_ATTR_LISTEN))
3907 if (*(int *) buffer)
3908 vcl_session_set_attr (session, VCL_SESS_ATTR_REUSEPORT);
3910 vcl_session_clear_attr (session, VCL_SESS_ATTR_REUSEPORT);
3912 VDBG (2, "VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d, #VPP-TBD#",
3913 vcl_session_has_attr (session, VCL_SESS_ATTR_REUSEPORT),
3920 case VPPCOM_ATTR_GET_BROADCAST:
3921 if (buffer && buflen && (*buflen >= sizeof (int)))
3924 *(int *) buffer = vcl_session_has_attr (session,
3925 VCL_SESS_ATTR_BROADCAST);
3926 *buflen = sizeof (int);
3928 VDBG (2, "VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d, #VPP-TBD#",
3929 *(int *) buffer, *buflen);
3935 case VPPCOM_ATTR_SET_BROADCAST:
3936 if (buffer && buflen && (*buflen == sizeof (int)))
3939 if (*(int *) buffer)
3940 vcl_session_set_attr (session, VCL_SESS_ATTR_BROADCAST);
3942 vcl_session_clear_attr (session, VCL_SESS_ATTR_BROADCAST);
3944 VDBG (2, "VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, #VPP-TBD#",
3945 vcl_session_has_attr (session, VCL_SESS_ATTR_BROADCAST),
3952 case VPPCOM_ATTR_GET_V6ONLY:
3953 if (buffer && buflen && (*buflen >= sizeof (int)))
3956 *(int *) buffer = vcl_session_has_attr (session,
3957 VCL_SESS_ATTR_V6ONLY);
3958 *buflen = sizeof (int);
3960 VDBG (2, "VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, #VPP-TBD#",
3961 *(int *) buffer, *buflen);
3967 case VPPCOM_ATTR_SET_V6ONLY:
3968 if (buffer && buflen && (*buflen == sizeof (int)))
3971 if (*(int *) buffer)
3972 vcl_session_set_attr (session, VCL_SESS_ATTR_V6ONLY);
3974 vcl_session_clear_attr (session, VCL_SESS_ATTR_V6ONLY);
3976 VDBG (2, "VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, #VPP-TBD#",
3977 vcl_session_has_attr (session, VCL_SESS_ATTR_V6ONLY),
3984 case VPPCOM_ATTR_GET_KEEPALIVE:
3985 if (buffer && buflen && (*buflen >= sizeof (int)))
3988 *(int *) buffer = vcl_session_has_attr (session,
3989 VCL_SESS_ATTR_KEEPALIVE);
3990 *buflen = sizeof (int);
3992 VDBG (2, "VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, #VPP-TBD#",
3993 *(int *) buffer, *buflen);
3999 case VPPCOM_ATTR_SET_KEEPALIVE:
4000 if (buffer && buflen && (*buflen == sizeof (int)))
4003 if (*(int *) buffer)
4004 vcl_session_set_attr (session, VCL_SESS_ATTR_KEEPALIVE);
4006 vcl_session_clear_attr (session, VCL_SESS_ATTR_KEEPALIVE);
4008 VDBG (2, "VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, #VPP-TBD#",
4009 vcl_session_has_attr (session, VCL_SESS_ATTR_KEEPALIVE),
4016 case VPPCOM_ATTR_GET_TCP_NODELAY:
4017 if (buffer && buflen && (*buflen >= sizeof (int)))
4020 *(int *) buffer = vcl_session_has_attr (session,
4021 VCL_SESS_ATTR_TCP_NODELAY);
4022 *buflen = sizeof (int);
4024 VDBG (2, "VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#",
4025 *(int *) buffer, *buflen);
4031 case VPPCOM_ATTR_SET_TCP_NODELAY:
4032 if (buffer && buflen && (*buflen == sizeof (int)))
4035 if (*(int *) buffer)
4036 vcl_session_set_attr (session, VCL_SESS_ATTR_TCP_NODELAY);
4038 vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_NODELAY);
4040 VDBG (2, "VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#",
4041 vcl_session_has_attr (session, VCL_SESS_ATTR_TCP_NODELAY),
4048 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
4049 if (buffer && buflen && (*buflen >= sizeof (int)))
4052 *(int *) buffer = vcl_session_has_attr (session,
4053 VCL_SESS_ATTR_TCP_KEEPIDLE);
4054 *buflen = sizeof (int);
4056 VDBG (2, "VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#",
4057 *(int *) buffer, *buflen);
4063 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
4064 if (buffer && buflen && (*buflen == sizeof (int)))
4067 if (*(int *) buffer)
4068 vcl_session_set_attr (session, VCL_SESS_ATTR_TCP_KEEPIDLE);
4070 vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_KEEPIDLE);
4072 VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#",
4073 vcl_session_has_attr (session,
4074 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
4080 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
4081 if (buffer && buflen && (*buflen >= sizeof (int)))
4084 *(int *) buffer = vcl_session_has_attr (session,
4085 VCL_SESS_ATTR_TCP_KEEPINTVL);
4086 *buflen = sizeof (int);
4088 VDBG (2, "VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#",
4089 *(int *) buffer, *buflen);
4095 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
4096 if (buffer && buflen && (*buflen == sizeof (int)))
4099 if (*(int *) buffer)
4100 vcl_session_set_attr (session, VCL_SESS_ATTR_TCP_KEEPINTVL);
4102 vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_KEEPINTVL);
4104 VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#",
4105 vcl_session_has_attr (session,
4106 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
4112 case VPPCOM_ATTR_GET_TCP_USER_MSS:
4113 if (!(buffer && buflen && (*buflen >= sizeof (u32))))
4119 tea.type = TRANSPORT_ENDPT_ATTR_MSS;
4120 tea.mss = *(u32 *) buffer;
4121 if (vcl_session_transport_attr (wrk, session, 1 /* is_get */, &tea))
4122 rv = VPPCOM_ENOPROTOOPT;
4126 *(u32 *) buffer = tea.mss;
4127 *buflen = sizeof (int);
4130 VDBG (2, "VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d", *(int *) buffer,
4133 case VPPCOM_ATTR_SET_TCP_USER_MSS:
4134 if (!(buffer && buflen && (*buflen == sizeof (u32))))
4140 tea.type = TRANSPORT_ENDPT_ATTR_MSS;
4141 tea.mss = *(u32 *) buffer;
4142 if (vcl_session_transport_attr (wrk, session, 0 /* is_get */, &tea))
4143 rv = VPPCOM_ENOPROTOOPT;
4145 VDBG (2, "VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d", tea.mss,
4149 case VPPCOM_ATTR_SET_CONNECTED:
4150 session->flags |= VCL_SESSION_F_CONNECTED;
4153 case VPPCOM_ATTR_SET_CKPAIR:
4154 if (!(buffer && buflen && (*buflen == sizeof (int))) ||
4155 !vcl_session_has_crypto (session))
4160 if (!session->ext_config)
4162 vcl_session_alloc_ext_cfg (session, TRANSPORT_ENDPT_EXT_CFG_CRYPTO,
4163 sizeof (transport_endpt_ext_cfg_t));
4165 else if (session->ext_config->type != TRANSPORT_ENDPT_EXT_CFG_CRYPTO)
4171 session->ext_config->crypto.ckpair_index = *(uint32_t *) buffer;
4174 case VPPCOM_ATTR_SET_VRF:
4175 if (!(buffer && buflen && (*buflen == sizeof (u32))))
4180 session->vrf = *(u32 *) buffer;
4183 case VPPCOM_ATTR_GET_VRF:
4184 if (!(buffer && buflen && (*buflen >= sizeof (u32))))
4189 *(u32 *) buffer = session->vrf;
4190 *buflen = sizeof (u32);
4193 case VPPCOM_ATTR_GET_DOMAIN:
4194 if (!(buffer && buflen && (*buflen >= sizeof (int))))
4200 if (session->transport.is_ip4)
4201 *(int *) buffer = AF_INET;
4203 *(int *) buffer = AF_INET6;
4204 *buflen = sizeof (int);
4206 VDBG (2, "VPPCOM_ATTR_GET_DOMAIN: %d, buflen %u", *(int *) buffer,
4210 case VPPCOM_ATTR_SET_ENDPT_EXT_CFG:
4211 if (!(buffer && buflen && (*buflen > 0)))
4216 if (session->ext_config)
4221 vcl_session_alloc_ext_cfg (session, TRANSPORT_ENDPT_EXT_CFG_NONE,
4222 *buflen + sizeof (u32));
4223 clib_memcpy (session->ext_config->data, buffer, *buflen);
4224 session->ext_config->len = *buflen;
4226 case VPPCOM_ATTR_SET_IP_PKTINFO:
4227 if (buffer && buflen && (*buflen == sizeof (int)) &&
4228 !vcl_session_has_attr (session, VCL_SESS_ATTR_IP_PKTINFO))
4230 if (*(int *) buffer)
4231 vcl_session_set_attr (session, VCL_SESS_ATTR_IP_PKTINFO);
4233 vcl_session_clear_attr (session, VCL_SESS_ATTR_IP_PKTINFO);
4235 VDBG (2, "VCL_SESS_ATTR_IP_PKTINFO: %d, buflen %d",
4236 vcl_session_has_attr (session, VCL_SESS_ATTR_IP_PKTINFO),
4243 case VPPCOM_ATTR_GET_IP_PKTINFO:
4244 if (buffer && buflen && (*buflen >= sizeof (int)))
4247 vcl_session_has_attr (session, VCL_SESS_ATTR_IP_PKTINFO);
4248 *buflen = sizeof (int);
4250 VDBG (2, "VCL_SESS_ATTR_IP_PKTINFO: %d, buflen %d", *(int *) buffer,
4266 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
4267 uint32_t buflen, int flags, vppcom_endpt_t * ep)
4269 vcl_worker_t *wrk = vcl_worker_get_current ();
4270 vcl_session_t *session;
4274 rv = vppcom_session_read (session_handle, buffer, buflen);
4275 else if (flags & MSG_PEEK)
4276 rv = vppcom_session_peek (session_handle, buffer, buflen);
4279 VDBG (0, "Unsupport flags for recvfrom %d", flags);
4280 return VPPCOM_EAFNOSUPPORT;
4285 session = vcl_session_get_w_handle (wrk, session_handle);
4286 if (session->transport.is_ip4)
4287 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
4288 sizeof (ip4_address_t));
4290 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
4291 sizeof (ip6_address_t));
4292 ep->is_ip4 = session->transport.is_ip4;
4293 ep->port = session->transport.rmt_port;
4300 vcl_handle_ep_app_tlvs (vcl_session_t *s, vppcom_endpt_t *ep)
4302 vppcom_endpt_tlv_t *tlv = ep->app_tlvs;
4306 switch (tlv->data_type)
4308 case VCL_UDP_SEGMENT:
4309 s->gso_size = *(u16 *) tlv->data;
4311 case VCL_IP_PKTINFO:
4312 clib_memcpy_fast (&s->transport.lcl_ip, (ip4_address_t *) tlv->data,
4313 sizeof (ip4_address_t));
4316 VDBG (0, "Ignorning unsupported app tlv %u", tlv->data_type);
4319 tlv = VCL_EP_NEXT_APP_TLV (ep, tlv);
4325 vppcom_session_sendto (uint32_t session_handle, void *buffer,
4326 uint32_t buflen, int flags, vppcom_endpt_t * ep)
4328 vcl_worker_t *wrk = vcl_worker_get_current ();
4331 s = vcl_session_get_w_handle (wrk, session_handle);
4332 if (PREDICT_FALSE (!s))
4333 return VPPCOM_EBADFD;
4337 if (!vcl_session_is_cl (s))
4338 return VPPCOM_EINVAL;
4340 s->transport.is_ip4 = ep->is_ip4;
4341 s->transport.rmt_port = ep->port;
4342 vcl_ip_copy_from_ep (&s->transport.rmt_ip, ep);
4345 vcl_handle_ep_app_tlvs (s, ep);
4347 /* Session not connected/bound in vpp. Create it by 'connecting' it */
4348 if (PREDICT_FALSE (s->session_state == VCL_STATE_CLOSED))
4350 u32 session_index = s->session_index;
4351 f64 timeout = vcm->cfg.session_timeout;
4354 vcl_send_session_connect (wrk, s);
4355 rv = vppcom_wait_for_session_state_change (session_index,
4360 s = vcl_session_get (wrk, session_index);
4366 // TBD check the flags and do the right thing
4367 VDBG (2, "handling flags 0x%u (%d) not implemented yet.", flags, flags);
4370 return (vppcom_session_write_inline (wrk, s, buffer, buflen, 1,
4371 s->is_dgram ? 1 : 0));
4375 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
4377 vcl_worker_t *wrk = vcl_worker_get_current ();
4378 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
4379 u32 i, keep_trying = 1;
4380 svm_msg_q_msg_t msg;
4384 VDBG (3, "vp %p, nsids %u, wait_for_time %f", vp, n_sids, wait_for_time);
4387 return VPPCOM_EFAULT;
4391 vcl_session_t *session;
4393 /* Dequeue all events and drop all unhandled io events */
4394 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
4396 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
4397 vcl_handle_mq_event (wrk, e);
4398 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
4400 vec_reset_length (wrk->unhandled_evts_vector);
4402 for (i = 0; i < n_sids; i++)
4404 session = vcl_session_get (wrk, vp[i].sh);
4407 vp[i].revents = POLLHUP;
4414 if (POLLIN & vp[i].events)
4416 rv = vcl_session_read_ready (session);
4419 vp[i].revents |= POLLIN;
4426 case VPPCOM_ECONNRESET:
4427 vp[i].revents = POLLHUP;
4431 vp[i].revents = POLLERR;
4438 if (POLLOUT & vp[i].events)
4440 rv = vcl_session_write_ready (session);
4443 vp[i].revents |= POLLOUT;
4450 case VPPCOM_ECONNRESET:
4451 vp[i].revents = POLLHUP;
4455 vp[i].revents = POLLERR;
4462 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
4464 vp[i].revents = POLLNVAL;
4468 if (wait_for_time != -1)
4469 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
4471 while ((num_ev == 0) && keep_trying);
4477 vppcom_mq_epoll_fd (void)
4479 vcl_worker_t *wrk = vcl_worker_get_current ();
4480 return wrk->mqs_epfd;
4484 vppcom_session_index (vcl_session_handle_t session_handle)
4486 return session_handle & 0xFFFFFF;
4490 vppcom_session_worker (vcl_session_handle_t session_handle)
4492 return session_handle >> 24;
4496 vppcom_worker_register (void)
4498 if (!vcl_worker_alloc_and_init ())
4499 return VPPCOM_EEXIST;
4501 if (vcl_worker_register_with_vpp ())
4502 return VPPCOM_EEXIST;
4508 vppcom_worker_unregister (void)
4510 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
4511 vcl_set_worker_index (~0);
4515 vppcom_worker_index_set (int index)
4517 vcl_set_worker_index (index);
4521 vppcom_worker_index (void)
4523 return vcl_get_worker_index ();
4527 vppcom_worker_mqs_epfd (void)
4529 vcl_worker_t *wrk = vcl_worker_get_current ();
4530 if (!vcm->cfg.use_mq_eventfd)
4532 return wrk->mqs_epfd;
4536 vppcom_session_is_connectable_listener (uint32_t session_handle)
4538 vcl_session_t *session;
4539 vcl_worker_t *wrk = vcl_worker_get_current ();
4540 session = vcl_session_get_w_handle (wrk, session_handle);
4542 return VPPCOM_EBADFD;
4543 return vcl_session_is_connectable_listener (wrk, session);
4547 vppcom_session_listener (uint32_t session_handle)
4549 vcl_worker_t *wrk = vcl_worker_get_current ();
4550 vcl_session_t *listen_session, *session;
4551 session = vcl_session_get_w_handle (wrk, session_handle);
4553 return VPPCOM_EBADFD;
4554 if (session->listener_index == VCL_INVALID_SESSION_INDEX)
4555 return VPPCOM_EBADFD;
4556 listen_session = vcl_session_get_w_handle (wrk, session->listener_index);
4557 if (!listen_session)
4558 return VPPCOM_EBADFD;
4559 return vcl_session_handle (listen_session);
4563 vppcom_session_n_accepted (uint32_t session_handle)
4565 vcl_worker_t *wrk = vcl_worker_get_current ();
4566 vcl_session_t *session = vcl_session_get_w_handle (wrk, session_handle);
4568 return VPPCOM_EBADFD;
4569 return session->n_accepted_sessions;
4573 vppcom_proto_str (vppcom_proto_t proto)
4575 char const *proto_str;
4579 case VPPCOM_PROTO_TCP:
4582 case VPPCOM_PROTO_UDP:
4585 case VPPCOM_PROTO_TLS:
4588 case VPPCOM_PROTO_QUIC:
4591 case VPPCOM_PROTO_DTLS:
4594 case VPPCOM_PROTO_SRTP:
4598 proto_str = "UNKNOWN";
4605 vppcom_retval_str (int retval)
4616 st = "VPPCOM_EAGAIN";
4620 st = "VPPCOM_EFAULT";
4624 st = "VPPCOM_ENOMEM";
4628 st = "VPPCOM_EINVAL";
4632 st = "VPPCOM_EBADFD";
4635 case VPPCOM_EAFNOSUPPORT:
4636 st = "VPPCOM_EAFNOSUPPORT";
4639 case VPPCOM_ECONNABORTED:
4640 st = "VPPCOM_ECONNABORTED";
4643 case VPPCOM_ECONNRESET:
4644 st = "VPPCOM_ECONNRESET";
4647 case VPPCOM_ENOTCONN:
4648 st = "VPPCOM_ENOTCONN";
4651 case VPPCOM_ECONNREFUSED:
4652 st = "VPPCOM_ECONNREFUSED";
4655 case VPPCOM_ETIMEDOUT:
4656 st = "VPPCOM_ETIMEDOUT";
4659 case VPPCOM_EADDRINUSE:
4660 st = "VPPCOM_EADDRINUSE";
4664 st = "UNKNOWN_STATE";
4672 vppcom_add_cert_key_pair (vppcom_cert_key_pair_t *ckpair)
4674 if (vcm->cfg.vpp_app_socket_api)
4675 return vcl_sapi_add_cert_key_pair (ckpair);
4677 return vcl_bapi_add_cert_key_pair (ckpair);
4681 vppcom_del_cert_key_pair (uint32_t ckpair_index)
4683 if (vcm->cfg.vpp_app_socket_api)
4684 return vcl_sapi_del_cert_key_pair (ckpair_index);
4686 return vcl_bapi_del_cert_key_pair (ckpair_index);
4690 vppcom_session_get_error (uint32_t session_handle)
4692 vcl_worker_t *wrk = vcl_worker_get_current ();
4693 vcl_session_t *session = 0;
4695 session = vcl_session_get_w_handle (wrk, session_handle);
4697 return VPPCOM_EBADFD;
4699 if (PREDICT_FALSE (session->flags & VCL_SESSION_F_IS_VEP))
4701 VWRN ("epoll session %u! will not have connect", session->session_index);
4702 return VPPCOM_EBADFD;
4705 if (session->vpp_error == SESSION_E_PORTINUSE)
4706 return VPPCOM_EADDRINUSE;
4707 else if (session->vpp_error == SESSION_E_REFUSED)
4708 return VPPCOM_ECONNREFUSED;
4709 else if (session->vpp_error != SESSION_E_NONE)
4710 return VPPCOM_EFAULT;
4716 vppcom_worker_is_detached (void)
4718 vcl_worker_t *wrk = vcl_worker_get_current ();
4720 if (!vcm->cfg.use_mq_eventfd)
4721 return VPPCOM_ENOTSUP;
4723 return wrk->api_client_handle == ~0;
4727 * fd.io coding-style-patch-verification: ON
4730 * eval: (c-set-style "gnu")