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;
552 VDBG (0, "session %u [0x%llx]: Invalid session index!", sid,
554 return VCL_INVALID_SESSION_INDEX;
558 session->vpp_handle = mp->handle;
559 session->transport.is_ip4 = mp->lcl_is_ip4;
560 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
561 sizeof (ip46_address_t));
562 session->transport.lcl_port = mp->lcl_port;
563 vcl_session_table_add_listener (wrk, mp->handle, sid);
564 session->session_state = VCL_STATE_LISTEN;
565 session->flags &= ~VCL_SESSION_F_PENDING_LISTEN;
567 if (vcl_session_is_cl (session))
569 if (vcl_segment_attach_session (mp->segment_handle, mp->rx_fifo,
570 mp->tx_fifo, mp->vpp_evt_q, mp->mq_index,
573 VDBG (0, "session %u [0x%llx]: failed to attach fifos",
574 session->session_index, session->vpp_handle);
575 session->session_state = VCL_STATE_DETACHED;
576 return VCL_INVALID_SESSION_INDEX;
580 VDBG (0, "session %u [0x%llx]: listen succeeded!", sid, mp->handle);
585 vcl_session_unlisten_reply_handler (vcl_worker_t * wrk, void *data)
587 session_unlisten_reply_msg_t *mp = (session_unlisten_reply_msg_t *) data;
590 s = vcl_session_get_w_vpp_handle (wrk, mp->handle);
593 VDBG (0, "Unlisten reply with wrong handle %llx", mp->handle);
596 if (s->session_state != VCL_STATE_DISCONNECT)
598 /* Connected udp listener */
599 if (s->session_type == VPPCOM_PROTO_UDP
600 && s->session_state == VCL_STATE_CLOSED)
603 VDBG (0, "Unlisten session in wrong state %llx", mp->handle);
608 VDBG (0, "ERROR: session %u [0xllx]: unlisten failed: %U",
609 s->session_index, mp->handle, format_session_error, mp->retval);
611 if (mp->context != wrk->wrk_index)
612 VDBG (0, "wrong context");
614 vcl_session_table_del_vpp_handle (wrk, mp->handle);
615 vcl_session_free (wrk, s);
619 vcl_session_migrated_handler (vcl_worker_t * wrk, void *data)
621 session_migrated_msg_t *mp = (session_migrated_msg_t *) data;
625 s = vcl_session_get_w_vpp_handle (wrk, mp->handle);
628 VDBG (0, "Migrated notification with wrong handle %llx", mp->handle);
632 /* Only validate if a value is provided */
633 if (mp->segment_handle != SESSION_INVALID_HANDLE)
635 fs_index = vcl_segment_table_lookup (mp->segment_handle);
636 if (fs_index == VCL_INVALID_SEGMENT_INDEX)
638 VDBG (0, "segment %lx for session %u is not mounted!",
639 mp->segment_handle, s->session_index);
640 s->session_state = VCL_STATE_DETACHED;
645 s->vpp_handle = mp->new_handle;
647 vcl_segment_attach_mq (vcl_vpp_worker_segment_handle (0), mp->vpp_evt_q,
648 mp->vpp_thread_index, &s->vpp_evt_q);
650 vcl_session_table_del_vpp_handle (wrk, mp->handle);
651 vcl_session_table_add_vpp_handle (wrk, mp->new_handle, s->session_index);
653 /* Generate new tx event if we have outstanding data */
654 if (svm_fifo_has_event (s->tx_fifo))
655 app_send_io_evt_to_vpp (s->vpp_evt_q,
656 s->tx_fifo->shr->master_session_index,
657 SESSION_IO_EVT_TX, SVM_Q_WAIT);
659 VDBG (0, "Migrated 0x%lx to thread %u 0x%lx", mp->handle,
660 mp->vpp_thread_index, mp->new_handle);
663 static vcl_session_t *
664 vcl_session_accepted (vcl_worker_t * wrk, session_accepted_msg_t * msg)
666 vcl_session_msg_t *vcl_msg;
667 vcl_session_t *session;
669 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
670 if (PREDICT_FALSE (session != 0))
671 VWRN ("session overlap handle %lu state %u!", msg->handle,
672 session->session_state);
674 session = vcl_session_table_lookup_listener (wrk, msg->listener_handle);
677 VERR ("couldn't find listen session: listener handle %llx",
678 msg->listener_handle);
682 clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
684 vcl_msg->accepted_msg = *msg;
685 /* Session handle points to listener until fully accepted by app */
686 vcl_session_table_add_vpp_handle (wrk, msg->handle, session->session_index);
691 static vcl_session_t *
692 vcl_session_disconnected_handler (vcl_worker_t * wrk,
693 session_disconnected_msg_t * msg)
695 vcl_session_t *session;
697 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
700 VWRN ("request to disconnect unknown handle 0x%llx", msg->handle);
704 /* Late disconnect notification on a session that has been closed */
705 if (session->session_state == VCL_STATE_CLOSED)
708 /* Caught a disconnect before actually accepting the session */
709 if (session->session_state == VCL_STATE_LISTEN ||
710 session->session_state == VCL_STATE_LISTEN_NO_MQ)
712 if (!vcl_flag_accepted_session (session, msg->handle,
713 VCL_ACCEPTED_F_CLOSED))
714 VDBG (0, "session was not accepted!");
718 /* If not already reset change state */
719 if (session->session_state != VCL_STATE_DISCONNECT)
720 session->session_state = VCL_STATE_VPP_CLOSING;
726 vppcom_session_shutdown (uint32_t session_handle, int how)
728 vcl_worker_t *wrk = vcl_worker_get_current ();
729 vcl_session_t *session;
730 vcl_session_state_t state;
733 session = vcl_session_get_w_handle (wrk, session_handle);
734 if (PREDICT_FALSE (!session))
735 return VPPCOM_EBADFD;
737 vpp_handle = session->vpp_handle;
738 state = session->session_state;
740 VDBG (1, "session %u [0x%llx] state 0x%x (%s)", session->session_index,
741 vpp_handle, state, vcl_session_state_str (state));
743 if (PREDICT_FALSE (state == VCL_STATE_LISTEN))
745 VDBG (0, "ERROR: Cannot shutdown a listen socket!");
746 return VPPCOM_EBADFD;
749 if (how == SHUT_RD || how == SHUT_RDWR)
751 session->flags |= VCL_SESSION_F_RD_SHUTDOWN;
755 session->flags |= VCL_SESSION_F_WR_SHUTDOWN;
757 if (PREDICT_TRUE (state == VCL_STATE_READY))
759 VDBG (1, "session %u [0x%llx]: sending shutdown...",
760 session->session_index, vpp_handle);
762 vcl_send_session_shutdown (wrk, session);
769 vppcom_session_disconnect (u32 session_handle)
771 vcl_worker_t *wrk = vcl_worker_get_current ();
772 vcl_session_t *session, *listen_session;
773 vcl_session_state_t state;
776 session = vcl_session_get_w_handle (wrk, session_handle);
778 return VPPCOM_EBADFD;
780 vpp_handle = session->vpp_handle;
781 state = session->session_state;
783 VDBG (1, "session %u [0x%llx]: disconnecting state (%s)",
784 session->session_index, vpp_handle, vcl_session_state_str (state));
786 if (PREDICT_FALSE (state == VCL_STATE_LISTEN))
788 VDBG (0, "ERROR: Cannot disconnect a listen socket!");
789 return VPPCOM_EBADFD;
792 if (state == VCL_STATE_VPP_CLOSING)
794 vcl_send_session_disconnected_reply (wrk, session, 0);
795 VDBG (1, "session %u [0x%llx]: sending disconnect REPLY...",
796 session->session_index, vpp_handle);
800 /* Session doesn't have an event queue yet. Probably a non-blocking
801 * connect. Wait for the reply */
802 if (PREDICT_FALSE (!session->vpp_evt_q))
805 VDBG (1, "session %u [0x%llx]: sending disconnect",
806 session->session_index, vpp_handle);
807 vcl_send_session_disconnect (wrk, session);
810 if (session->listener_index != VCL_INVALID_SESSION_INDEX)
812 listen_session = vcl_session_get (wrk, session->listener_index);
814 listen_session->n_accepted_sessions--;
821 vcl_session_cleanup_handler (vcl_worker_t * wrk, void *data)
823 session_cleanup_msg_t *msg;
824 vcl_session_t *session;
826 msg = (session_cleanup_msg_t *) data;
827 session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
830 VWRN ("disconnect confirmed for unknown handle 0x%llx", msg->handle);
834 if (msg->type == SESSION_CLEANUP_TRANSPORT)
836 /* Transport was cleaned up before we confirmed close. Probably the
837 * app is still waiting for some data that cannot be delivered.
838 * Confirm close to make sure everything is cleaned up.
839 * Move to undetermined state to ensure that the session is not
840 * removed before both vpp and the app cleanup.
841 * - If the app closes first, the session is moved to CLOSED state
842 * and the session cleanup notification from vpp removes the
844 * - If vpp cleans up the session first, the session is moved to
845 * DETACHED state lower and subsequently the close from the app
848 if (session->session_state == VCL_STATE_VPP_CLOSING)
850 vppcom_session_disconnect (vcl_session_handle (session));
851 session->session_state = VCL_STATE_UPDATED;
853 else if (session->session_state == VCL_STATE_DISCONNECT)
855 vcl_send_session_reset_reply (wrk, session, 0);
856 session->session_state = VCL_STATE_UPDATED;
861 /* VPP will reuse the handle so clean it up now */
862 vcl_session_table_del_vpp_handle (wrk, msg->handle);
864 /* App did not close the connection yet so don't free it. */
865 if (session->session_state != VCL_STATE_CLOSED)
867 VDBG (0, "session %u: app did not close", session->session_index);
868 session->session_state = VCL_STATE_DETACHED;
869 session->vpp_handle = VCL_INVALID_SESSION_HANDLE;
873 /* Session probably tracked with epoll, disconnect not yet handled and
874 * 1) both transport and session cleanup completed 2) app closed. Wait
875 * until message is drained to free the session.
876 * See @ref vcl_handle_mq_event */
877 if (session->flags & VCL_SESSION_F_PENDING_DISCONNECT)
879 session->flags |= VCL_SESSION_F_PENDING_FREE;
883 vcl_session_free (wrk, session);
887 vcl_session_req_worker_update_handler (vcl_worker_t * wrk, void *data)
889 session_req_worker_update_msg_t *msg;
892 msg = (session_req_worker_update_msg_t *) data;
893 s = vcl_session_get_w_vpp_handle (wrk, msg->session_handle);
897 vec_add1 (wrk->pending_session_wrk_updates, s->session_index);
901 vcl_session_worker_update_reply_handler (vcl_worker_t * wrk, void *data)
903 session_worker_update_reply_msg_t *msg;
906 msg = (session_worker_update_reply_msg_t *) data;
907 s = vcl_session_get_w_vpp_handle (wrk, msg->handle);
910 VDBG (0, "unknown handle 0x%llx", msg->handle);
916 if (vcl_segment_attach_session (msg->segment_handle, msg->rx_fifo,
917 msg->tx_fifo, (uword) ~0, ~0, 0, s))
919 VDBG (0, "failed to attach fifos for %u", s->session_index);
923 s->session_state = VCL_STATE_UPDATED;
925 VDBG (0, "session %u[0x%llx] moved to worker %u", s->session_index,
926 s->vpp_handle, wrk->wrk_index);
930 vcl_api_recv_fd (vcl_worker_t * wrk, int *fds, int n_fds)
933 if (vcm->cfg.vpp_app_socket_api)
934 return vcl_sapi_recv_fds (wrk, fds, n_fds);
936 return vcl_bapi_recv_fds (wrk, fds, n_fds);
940 vcl_session_app_add_segment_handler (vcl_worker_t * wrk, void *data)
942 ssvm_segment_type_t seg_type = SSVM_SEGMENT_SHM;
943 session_app_add_segment_msg_t *msg;
947 msg = (session_app_add_segment_msg_t *) data;
951 vcl_api_recv_fd (wrk, &fd, 1);
952 seg_type = SSVM_SEGMENT_MEMFD;
955 segment_handle = msg->segment_handle;
956 if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
958 clib_warning ("invalid segment handle");
962 if (vcl_segment_attach (segment_handle, (char *) msg->segment_name,
965 VDBG (0, "vcl_segment_attach ('%s') failed", msg->segment_name);
969 VDBG (1, "mapped new segment '%s' size %d", msg->segment_name,
974 vcl_session_app_del_segment_handler (vcl_worker_t * wrk, void *data)
976 session_app_del_segment_msg_t *msg = (session_app_del_segment_msg_t *) data;
977 vcl_segment_detach (msg->segment_handle);
978 VDBG (1, "Unmapped segment: %lx", msg->segment_handle);
982 vcl_worker_rpc_handler (vcl_worker_t * wrk, void *data)
984 if (!vcm->wrk_rpc_fn)
987 (vcm->wrk_rpc_fn) (((session_app_wrk_rpc_msg_t *) data)->data);
991 vcl_session_transport_attr_reply_handler (vcl_worker_t *wrk, void *data)
993 session_transport_attr_reply_msg_t *mp;
995 if (!wrk->session_attr_op)
998 mp = (session_transport_attr_reply_msg_t *) data;
1000 wrk->session_attr_op_rv = mp->retval;
1001 wrk->session_attr_op = 0;
1002 wrk->session_attr_rv = mp->attr;
1006 vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
1008 session_disconnected_msg_t *disconnected_msg;
1009 session_connected_msg_t *connected_msg;
1010 session_reset_msg_t *reset_msg;
1011 session_event_t *ecpy;
1015 switch (e->event_type)
1017 case SESSION_IO_EVT_RX:
1018 case SESSION_IO_EVT_TX:
1019 s = vcl_session_get (wrk, e->session_index);
1020 if (!s || !vcl_session_is_open (s))
1022 vec_add1 (wrk->unhandled_evts_vector, *e);
1024 case SESSION_CTRL_EVT_BOUND:
1025 /* We can only wait for only one listen so not postponed */
1026 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
1028 case SESSION_CTRL_EVT_ACCEPTED:
1029 s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
1030 if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
1032 vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
1034 ecpy->postponed = 1;
1035 ecpy->session_index = s->session_index;
1038 case SESSION_CTRL_EVT_CONNECTED:
1039 connected_msg = (session_connected_msg_t *) e->data;
1040 sid = vcl_session_connected_handler (wrk, connected_msg);
1041 if (!(s = vcl_session_get (wrk, sid)))
1043 if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
1045 vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
1047 ecpy->postponed = 1;
1048 ecpy->session_index = s->session_index;
1051 case SESSION_CTRL_EVT_DISCONNECTED:
1052 disconnected_msg = (session_disconnected_msg_t *) e->data;
1053 if (!(s = vcl_session_get_w_vpp_handle (wrk, disconnected_msg->handle)))
1055 if (s->session_state == VCL_STATE_CLOSED)
1057 /* We do not postpone for blocking sessions or listen sessions because:
1058 * 1. Blocking sessions are not part of epoll instead they're used in a
1059 * synchronous manner, such as read/write and etc.
1060 * 2. Listen sessions that have not yet been accepted can't change to
1061 * VPP_CLOSING state instead can been marked as ACCEPTED_F_CLOSED.
1063 if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK) &&
1064 !(s->session_state == VCL_STATE_LISTEN ||
1065 s->session_state == VCL_STATE_LISTEN_NO_MQ))
1067 s->session_state = VCL_STATE_VPP_CLOSING;
1068 s->flags |= VCL_SESSION_F_PENDING_DISCONNECT;
1069 vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
1071 ecpy->postponed = 1;
1072 ecpy->session_index = s->session_index;
1075 if (!(s = vcl_session_disconnected_handler (wrk, disconnected_msg)))
1077 VDBG (0, "disconnected session %u [0x%llx]", s->session_index,
1080 case SESSION_CTRL_EVT_RESET:
1081 reset_msg = (session_reset_msg_t *) e->data;
1082 if (!(s = vcl_session_get_w_vpp_handle (wrk, reset_msg->handle)))
1084 if (s->session_state == VCL_STATE_CLOSED)
1086 /* We do not postpone for blocking sessions or listen sessions because:
1087 * 1. Blocking sessions are not part of epoll instead they're used in a
1088 * synchronous manner, such as read/write and etc.
1089 * 2. Listen sessions that have not yet been accepted can't change to
1090 * DISCONNECT state instead can been marked as ACCEPTED_F_RESET.
1092 if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK) &&
1093 !(s->session_state == VCL_STATE_LISTEN ||
1094 s->session_state == VCL_STATE_LISTEN_NO_MQ))
1096 s->flags |= VCL_SESSION_F_PENDING_DISCONNECT;
1097 s->session_state = VCL_STATE_DISCONNECT;
1098 s->flags |= (VCL_SESSION_F_RD_SHUTDOWN | VCL_SESSION_F_WR_SHUTDOWN);
1099 vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
1101 ecpy->postponed = 1;
1102 ecpy->session_index = s->session_index;
1105 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
1107 case SESSION_CTRL_EVT_UNLISTEN_REPLY:
1108 vcl_session_unlisten_reply_handler (wrk, e->data);
1110 case SESSION_CTRL_EVT_MIGRATED:
1111 vcl_session_migrated_handler (wrk, e->data);
1113 case SESSION_CTRL_EVT_CLEANUP:
1114 vcl_session_cleanup_handler (wrk, e->data);
1116 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
1117 vcl_session_req_worker_update_handler (wrk, e->data);
1119 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
1120 vcl_session_worker_update_reply_handler (wrk, e->data);
1122 case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
1123 vcl_session_app_add_segment_handler (wrk, e->data);
1125 case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
1126 vcl_session_app_del_segment_handler (wrk, e->data);
1128 case SESSION_CTRL_EVT_APP_WRK_RPC:
1129 vcl_worker_rpc_handler (wrk, e->data);
1131 case SESSION_CTRL_EVT_TRANSPORT_ATTR_REPLY:
1132 vcl_session_transport_attr_reply_handler (wrk, e->data);
1135 clib_warning ("unhandled %u", e->event_type);
1141 vppcom_wait_for_session_state_change (u32 session_index,
1142 vcl_session_state_t state,
1145 vcl_worker_t *wrk = vcl_worker_get_current ();
1146 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
1147 vcl_session_t *volatile session;
1148 svm_msg_q_msg_t msg;
1153 session = vcl_session_get (wrk, session_index);
1154 if (PREDICT_FALSE (!session))
1156 return VPPCOM_EBADFD;
1158 if (session->session_state == state)
1162 if (session->session_state == VCL_STATE_DETACHED)
1164 return VPPCOM_ECONNREFUSED;
1167 if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
1172 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
1173 vcl_handle_mq_event (wrk, e);
1174 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
1176 while (clib_time_now (&wrk->clib_time) < timeout);
1178 VDBG (0, "timeout waiting for state 0x%x (%s)", state,
1179 vcl_session_state_str (state));
1180 vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
1182 return VPPCOM_ETIMEDOUT;
1186 vcl_handle_pending_wrk_updates (vcl_worker_t * wrk)
1188 vcl_session_state_t state;
1192 if (PREDICT_TRUE (vec_len (wrk->pending_session_wrk_updates) == 0))
1195 vec_foreach (sip, wrk->pending_session_wrk_updates)
1197 s = vcl_session_get (wrk, *sip);
1198 vcl_send_session_worker_update (wrk, s, wrk->wrk_index);
1199 state = s->session_state;
1200 vppcom_wait_for_session_state_change (s->session_index, VCL_STATE_UPDATED,
1202 s->session_state = state;
1204 vec_reset_length (wrk->pending_session_wrk_updates);
1208 vcl_worker_flush_mq_events (vcl_worker_t *wrk)
1210 svm_msg_q_msg_t *msg;
1215 mq = wrk->app_event_queue;
1216 vcl_mq_dequeue_batch (wrk, mq, ~0);
1218 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
1220 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
1221 e = svm_msg_q_msg_data (mq, msg);
1222 vcl_handle_mq_event (wrk, e);
1223 svm_msg_q_free_msg (mq, msg);
1225 vec_reset_length (wrk->mq_msg_vector);
1226 vcl_handle_pending_wrk_updates (wrk);
1230 vcl_flush_mq_events (void)
1232 vcl_worker_flush_mq_events (vcl_worker_get_current ());
1236 vppcom_session_unbind (u32 session_handle)
1238 vcl_worker_t *wrk = vcl_worker_get_current ();
1239 session_accepted_msg_t *accepted_msg;
1240 vcl_session_t *session = 0;
1241 vcl_session_msg_t *evt;
1243 session = vcl_session_get_w_handle (wrk, session_handle);
1245 return VPPCOM_EBADFD;
1247 /* Flush pending accept events, if any */
1248 while (clib_fifo_elts (session->accept_evts_fifo))
1250 clib_fifo_sub2 (session->accept_evts_fifo, evt);
1251 accepted_msg = &evt->accepted_msg;
1252 vcl_session_table_del_vpp_handle (wrk, accepted_msg->handle);
1253 vcl_send_session_accepted_reply (session->vpp_evt_q,
1254 accepted_msg->context,
1255 accepted_msg->handle, -1);
1257 clib_fifo_free (session->accept_evts_fifo);
1259 vcl_send_session_unlisten (wrk, session);
1261 VDBG (0, "session %u [0x%llx]: sending unbind!", session->session_index,
1262 session->vpp_handle);
1263 vcl_evt (VCL_EVT_UNBIND, session);
1265 session->vpp_handle = ~0;
1266 session->session_state = VCL_STATE_DISCONNECT;
1274 * Notify vpp of the disconnect and mark the worker as free. If we're the
1275 * last worker, do a full cleanup otherwise, since we're probably a forked
1276 * child, avoid syscalls as much as possible. We might've lost privileges.
1279 vppcom_app_exit (void)
1281 if (!pool_elts (vcm->workers))
1283 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
1284 vcl_set_worker_index (~0);
1285 vcl_elog_stop (vcm);
1289 vcl_api_attach (void)
1291 if (vcm->cfg.vpp_app_socket_api)
1292 return vcl_sapi_attach ();
1294 return vcl_bapi_attach ();
1298 vcl_is_first_reattach_to_execute ()
1300 if (vcm->reattach_count == 0)
1307 vcl_set_reattach_counter ()
1309 ++vcm->reattach_count;
1311 if (vcm->reattach_count == vec_len (vcm->workers))
1312 vcm->reattach_count = 0;
1316 * Reattach vcl to vpp after it has previously been disconnected.
1318 * The logic should be:
1319 * - first worker to hit `vcl_api_retry_attach` should attach to vpp,
1320 * to reproduce the `vcl_api_attach` in `vppcom_app_create`.
1321 * - the rest of the workers should `reproduce vcl_worker_register_with_vpp`
1322 * from `vppcom_worker_register` since they were already allocated.
1326 vcl_api_retry_attach (vcl_worker_t *wrk)
1330 clib_spinlock_lock (&vcm->workers_lock);
1331 if (vcl_is_first_reattach_to_execute ())
1333 if (vcl_api_attach ())
1335 clib_spinlock_unlock (&vcm->workers_lock);
1338 vcl_set_reattach_counter ();
1339 clib_spinlock_unlock (&vcm->workers_lock);
1343 vcl_set_reattach_counter ();
1344 clib_spinlock_unlock (&vcm->workers_lock);
1345 vcl_worker_register_with_vpp ();
1348 /* Treat listeners as configuration that needs to be re-added to vpp */
1349 pool_foreach (s, wrk->sessions)
1351 if (s->flags & VCL_SESSION_F_IS_VEP)
1353 if (s->session_state == VCL_STATE_LISTEN_NO_MQ)
1354 vppcom_session_listen (vcl_session_handle (s), 10);
1356 VDBG (0, "internal error: unexpected state %d", s->session_state);
1361 vcl_api_handle_disconnect (vcl_worker_t *wrk)
1363 wrk->api_client_handle = ~0;
1364 vcl_worker_detach_sessions (wrk);
1368 vcl_api_detach (vcl_worker_t * wrk)
1370 if (wrk->api_client_handle == ~0)
1373 vcl_send_app_detach (wrk);
1375 if (vcm->cfg.vpp_app_socket_api)
1376 return vcl_sapi_detach (wrk);
1378 return vcl_bapi_disconnect_from_vpp ();
1382 * VPPCOM Public API functions
1385 vppcom_app_create (const char *app_name)
1387 vppcom_cfg_t *vcl_cfg = &vcm->cfg;
1392 VDBG (1, "already initialized");
1393 return VPPCOM_EEXIST;
1397 vppcom_cfg (&vcm->cfg);
1398 vcl_cfg = &vcm->cfg;
1400 vcm->main_cpu = pthread_self ();
1401 vcm->main_pid = getpid ();
1402 vcm->app_name = format (0, "%s", app_name);
1403 fifo_segment_main_init (&vcm->segment_main, (uword) ~0,
1404 20 /* timeout in secs */);
1405 pool_alloc (vcm->workers, vcl_cfg->max_workers);
1406 clib_spinlock_init (&vcm->workers_lock);
1407 clib_rwlock_init (&vcm->segment_table_lock);
1408 atexit (vppcom_app_exit);
1409 vcl_elog_init (vcm);
1411 /* Allocate default worker */
1412 vcl_worker_alloc_and_init ();
1414 if ((rv = vcl_api_attach ()))
1416 vppcom_app_destroy ();
1420 VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
1421 vcm->workers[0].api_client_handle, vcm->workers[0].api_client_handle);
1427 vppcom_app_destroy (void)
1429 vcl_worker_t *wrk, *current_wrk;
1432 if (!pool_elts (vcm->workers))
1435 vcl_evt (VCL_EVT_DETACH, vcm);
1437 current_wrk = vcl_worker_get_current ();
1440 pool_foreach (wrk, vcm->workers) {
1441 if (current_wrk != wrk)
1442 vcl_worker_cleanup (wrk, 0 /* notify vpp */ );
1446 vcl_api_detach (current_wrk);
1447 vcl_worker_cleanup (current_wrk, 0 /* notify vpp */ );
1448 vcl_set_worker_index (~0);
1450 vcl_elog_stop (vcm);
1453 * Free the heap and fix vcm
1455 heap = clib_mem_get_heap ();
1456 munmap (clib_mem_get_heap_base (heap), clib_mem_get_heap_size (heap));
1458 vcm = &_vppcom_main;
1463 vppcom_session_create (u8 proto, u8 is_nonblocking)
1465 vcl_worker_t *wrk = vcl_worker_get_current ();
1466 vcl_session_t *session;
1468 session = vcl_session_alloc (wrk);
1470 session->session_type = proto;
1471 session->session_state = VCL_STATE_CLOSED;
1472 session->vpp_handle = ~0;
1473 session->is_dgram = vcl_proto_is_dgram (proto);
1474 session->vpp_error = SESSION_E_NONE;
1477 vcl_session_set_attr (session, VCL_SESS_ATTR_NONBLOCK);
1479 vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
1480 is_nonblocking, session_index);
1482 VDBG (0, "created session %u", session->session_index);
1484 return vcl_session_handle (session);
1488 vcl_epoll_lt_add (vcl_worker_t *wrk, vcl_session_t *s)
1490 vcl_session_t *cur, *prev;
1492 ASSERT (s->vep.lt_next == VCL_INVALID_SESSION_INDEX);
1494 if (wrk->ep_lt_current == VCL_INVALID_SESSION_INDEX)
1496 wrk->ep_lt_current = s->session_index;
1497 s->vep.lt_next = s->session_index;
1498 s->vep.lt_prev = s->session_index;
1502 cur = vcl_session_get (wrk, wrk->ep_lt_current);
1503 prev = vcl_session_get (wrk, cur->vep.lt_prev);
1505 prev->vep.lt_next = s->session_index;
1506 s->vep.lt_prev = prev->session_index;
1508 s->vep.lt_next = cur->session_index;
1509 cur->vep.lt_prev = s->session_index;
1513 vcl_epoll_lt_del (vcl_worker_t *wrk, vcl_session_t *s)
1515 vcl_session_t *prev, *next;
1517 ASSERT (s->vep.lt_next != VCL_INVALID_SESSION_INDEX);
1519 if (s->vep.lt_next == s->session_index)
1521 wrk->ep_lt_current = VCL_INVALID_SESSION_INDEX;
1522 s->vep.lt_next = VCL_INVALID_SESSION_INDEX;
1523 s->vep.lt_prev = VCL_INVALID_SESSION_INDEX;
1527 prev = vcl_session_get (wrk, s->vep.lt_prev);
1528 next = vcl_session_get (wrk, s->vep.lt_next);
1530 prev->vep.lt_next = next->session_index;
1531 next->vep.lt_prev = prev->session_index;
1533 if (s->session_index == wrk->ep_lt_current)
1534 wrk->ep_lt_current = s->vep.lt_next;
1536 s->vep.lt_next = VCL_INVALID_SESSION_INDEX;
1537 s->vep.lt_prev = VCL_INVALID_SESSION_INDEX;
1541 vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * s,
1542 vcl_session_handle_t sh, u8 do_disconnect)
1546 VDBG (1, "session %u [0x%llx] closing", s->session_index, s->vpp_handle);
1548 if (s->flags & VCL_SESSION_F_IS_VEP)
1550 u32 next_sh = s->vep.next_sh;
1551 while (next_sh != ~0)
1553 rv = vppcom_epoll_ctl (sh, EPOLL_CTL_DEL, next_sh, 0);
1554 if (PREDICT_FALSE (rv < 0))
1555 VDBG (0, "vpp handle 0x%llx, sh %u: EPOLL_CTL_DEL vep_idx %u"
1556 " failed! rv %d (%s)", s->vpp_handle, next_sh,
1557 s->vep.vep_sh, rv, vppcom_retval_str (rv));
1558 next_sh = s->vep.next_sh;
1563 if (s->flags & VCL_SESSION_F_IS_VEP_SESSION)
1565 rv = vppcom_epoll_ctl (s->vep.vep_sh, EPOLL_CTL_DEL, sh, 0);
1567 VDBG (0, "session %u [0x%llx]: EPOLL_CTL_DEL vep_idx %u "
1568 "failed! rv %d (%s)", s->session_index, s->vpp_handle,
1569 s->vep.vep_sh, rv, vppcom_retval_str (rv));
1574 VDBG (1, "session %u [0x%llx] disconnect skipped",
1575 s->session_index, s->vpp_handle);
1579 if (s->session_state == VCL_STATE_LISTEN)
1581 rv = vppcom_session_unbind (sh);
1582 if (PREDICT_FALSE (rv < 0))
1583 VDBG (0, "session %u [0x%llx]: listener unbind failed! "
1584 "rv %d (%s)", s->session_index, s->vpp_handle, rv,
1585 vppcom_retval_str (rv));
1588 else if (vcl_session_is_ready (s)
1589 || (vcl_session_is_connectable_listener (wrk, s)))
1591 rv = vppcom_session_disconnect (sh);
1592 if (PREDICT_FALSE (rv < 0))
1593 VDBG (0, "ERROR: session %u [0x%llx]: disconnect failed!"
1594 " rv %d (%s)", s->session_index, s->vpp_handle,
1595 rv, vppcom_retval_str (rv));
1597 else if (s->session_state == VCL_STATE_DISCONNECT)
1599 vcl_send_session_reset_reply (wrk, s, 0);
1601 else if (s->session_state == VCL_STATE_DETACHED)
1603 VDBG (0, "vpp freed session %d before close", s->session_index);
1605 if (!(s->flags & VCL_SESSION_F_PENDING_DISCONNECT))
1608 /* Disconnect/reset messages pending but vpp transport and session
1609 * cleanups already done. Free only after messages drained. */
1610 s->flags |= VCL_SESSION_F_PENDING_FREE;
1613 s->session_state = VCL_STATE_CLOSED;
1615 /* Session is removed only after vpp confirms the disconnect */
1619 vcl_session_table_del_vpp_handle (wrk, s->vpp_handle);
1621 vcl_session_free (wrk, s);
1622 vcl_evt (VCL_EVT_CLOSE, s, rv);
1628 vppcom_session_close (uint32_t session_handle)
1630 vcl_worker_t *wrk = vcl_worker_get_current ();
1631 vcl_session_t *session;
1633 session = vcl_session_get_w_handle (wrk, session_handle);
1635 return VPPCOM_EBADFD;
1636 return vcl_session_cleanup (wrk, session, session_handle,
1637 1 /* do_disconnect */ );
1641 vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
1643 vcl_worker_t *wrk = vcl_worker_get_current ();
1644 vcl_session_t *session = 0;
1647 return VPPCOM_EINVAL;
1649 session = vcl_session_get_w_handle (wrk, session_handle);
1651 return VPPCOM_EBADFD;
1653 if (session->flags & VCL_SESSION_F_IS_VEP)
1655 VDBG (0, "ERROR: cannot bind to epoll session %u!",
1656 session->session_index);
1657 return VPPCOM_EBADFD;
1660 session->transport.is_ip4 = ep->is_ip4;
1662 clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
1663 sizeof (ip4_address_t));
1665 clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
1666 sizeof (ip6_address_t));
1667 session->transport.lcl_port = ep->port;
1670 "session %u handle %u: binding to local %s address %U port %u, "
1672 session->session_index, session_handle,
1673 session->transport.is_ip4 ? "IPv4" : "IPv6", vcl_format_ip46_address,
1674 &session->transport.lcl_ip,
1675 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1676 clib_net_to_host_u16 (session->transport.lcl_port),
1677 vppcom_proto_str (session->session_type));
1678 vcl_evt (VCL_EVT_BIND, session);
1680 if (session->session_type == VPPCOM_PROTO_UDP)
1681 vppcom_session_listen (session_handle, 10);
1687 vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
1689 vcl_worker_t *wrk = vcl_worker_get_current ();
1690 vcl_session_t *listen_session = 0;
1691 u64 listen_vpp_handle;
1694 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1695 if (!listen_session || (listen_session->flags & VCL_SESSION_F_IS_VEP))
1696 return VPPCOM_EBADFD;
1698 listen_vpp_handle = listen_session->vpp_handle;
1699 if (listen_session->session_state == VCL_STATE_LISTEN)
1701 VDBG (0, "session %u [0x%llx]: already in listen state!",
1702 listen_sh, listen_vpp_handle);
1706 VDBG (0, "session %u: sending vpp listen request...", listen_sh);
1709 * Send listen request to vpp and wait for reply
1711 vcl_send_session_listen (wrk, listen_session);
1712 rv = vppcom_wait_for_session_state_change (listen_session->session_index,
1714 vcm->cfg.session_timeout);
1716 if (PREDICT_FALSE (rv))
1718 listen_session = vcl_session_get_w_handle (wrk, listen_sh);
1719 VDBG (0, "session %u [0x%llx]: listen failed! returning %d (%s)",
1720 listen_sh, listen_session->vpp_handle, rv,
1721 vppcom_retval_str (rv));
1729 vppcom_unformat_proto (uint8_t * proto, char *proto_str)
1731 if (!strcmp (proto_str, "TCP"))
1732 *proto = VPPCOM_PROTO_TCP;
1733 else if (!strcmp (proto_str, "tcp"))
1734 *proto = VPPCOM_PROTO_TCP;
1735 else if (!strcmp (proto_str, "UDP"))
1736 *proto = VPPCOM_PROTO_UDP;
1737 else if (!strcmp (proto_str, "udp"))
1738 *proto = VPPCOM_PROTO_UDP;
1739 else if (!strcmp (proto_str, "TLS"))
1740 *proto = VPPCOM_PROTO_TLS;
1741 else if (!strcmp (proto_str, "tls"))
1742 *proto = VPPCOM_PROTO_TLS;
1743 else if (!strcmp (proto_str, "QUIC"))
1744 *proto = VPPCOM_PROTO_QUIC;
1745 else if (!strcmp (proto_str, "quic"))
1746 *proto = VPPCOM_PROTO_QUIC;
1747 else if (!strcmp (proto_str, "DTLS"))
1748 *proto = VPPCOM_PROTO_DTLS;
1749 else if (!strcmp (proto_str, "dtls"))
1750 *proto = VPPCOM_PROTO_DTLS;
1751 else if (!strcmp (proto_str, "SRTP"))
1752 *proto = VPPCOM_PROTO_SRTP;
1753 else if (!strcmp (proto_str, "srtp"))
1754 *proto = VPPCOM_PROTO_SRTP;
1761 vppcom_session_accept (uint32_t ls_handle, vppcom_endpt_t *ep, uint32_t flags)
1763 u32 client_session_index = ~0, ls_index, accept_flags = 0;
1764 vcl_worker_t *wrk = vcl_worker_get_current ();
1765 session_accepted_msg_t accepted_msg;
1766 vcl_session_t *ls, *client_session = 0;
1767 vcl_session_msg_t *evt;
1772 ls = vcl_session_get_w_handle (wrk, ls_handle);
1774 return VPPCOM_EBADFD;
1776 if ((ls->session_state != VCL_STATE_LISTEN) &&
1777 (ls->session_state != VCL_STATE_LISTEN_NO_MQ) &&
1778 (!vcl_session_is_connectable_listener (wrk, ls)))
1780 VDBG (0, "ERROR: session [0x%llx]: not in listen state! state (%s)",
1781 ls->vpp_handle, vcl_session_state_str (ls->session_state));
1782 return VPPCOM_EBADFD;
1785 ls_index = ls->session_index;
1787 if (clib_fifo_elts (ls->accept_evts_fifo))
1789 clib_fifo_sub2 (ls->accept_evts_fifo, evt);
1790 accept_flags = evt->flags;
1791 accepted_msg = evt->accepted_msg;
1795 is_nonblocking = vcl_session_has_attr (ls, VCL_SESS_ATTR_NONBLOCK);
1798 if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
1799 return VPPCOM_EAGAIN;
1801 svm_msg_q_wait (wrk->app_event_queue, SVM_MQ_WAIT_EMPTY);
1802 vcl_worker_flush_mq_events (wrk);
1808 client_session_index =
1809 vcl_session_accepted_handler (wrk, &accepted_msg, ls_index);
1810 if (client_session_index == VCL_INVALID_SESSION_INDEX)
1811 return VPPCOM_ECONNABORTED;
1813 ls = vcl_session_get (wrk, ls_index);
1814 client_session = vcl_session_get (wrk, client_session_index);
1816 if (flags & O_NONBLOCK)
1817 vcl_session_set_attr (client_session, VCL_SESS_ATTR_NONBLOCK);
1820 "listener %u [0x%llx]: Got a connect request! session %u [0x%llx],"
1821 " flags %d, is_nonblocking %u",
1822 ls->session_index, ls->vpp_handle, client_session_index,
1823 client_session->vpp_handle, flags,
1824 vcl_session_has_attr (client_session, VCL_SESS_ATTR_NONBLOCK));
1828 ep->is_ip4 = client_session->transport.is_ip4;
1829 ep->port = client_session->transport.rmt_port;
1830 if (client_session->transport.is_ip4)
1831 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
1832 sizeof (ip4_address_t));
1834 clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
1835 sizeof (ip6_address_t));
1839 "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u "
1841 ls_handle, ls->vpp_handle, client_session_index,
1842 client_session->vpp_handle, vcl_format_ip46_address,
1843 &client_session->transport.rmt_ip,
1844 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1845 clib_net_to_host_u16 (client_session->transport.rmt_port),
1846 vcl_format_ip46_address, &client_session->transport.lcl_ip,
1847 client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1848 clib_net_to_host_u16 (client_session->transport.lcl_port));
1849 vcl_evt (VCL_EVT_ACCEPT, client_session, ls, client_session_index);
1852 * Session might have been closed already
1856 if (accept_flags & VCL_ACCEPTED_F_CLOSED)
1857 client_session->session_state = VCL_STATE_VPP_CLOSING;
1858 else if (accept_flags & VCL_ACCEPTED_F_RESET)
1859 client_session->session_state = VCL_STATE_DISCONNECT;
1861 return vcl_session_handle (client_session);
1865 vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
1867 vcl_worker_t *wrk = vcl_worker_get_current ();
1868 vcl_session_t *session = 0;
1872 session = vcl_session_get_w_handle (wrk, session_handle);
1874 return VPPCOM_EBADFD;
1875 session_index = session->session_index;
1877 if (PREDICT_FALSE (session->flags & VCL_SESSION_F_IS_VEP))
1879 VWRN ("cannot connect epoll session %u!", session->session_index);
1880 return VPPCOM_EBADFD;
1883 if (PREDICT_FALSE (vcl_session_is_ready (session)))
1886 "session %u [0x%llx]: already connected to %U:%d proto %s,"
1888 session->session_index, session->vpp_handle,
1889 vcl_format_ip46_address, &session->transport.rmt_ip,
1890 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1891 clib_net_to_host_u16 (session->transport.rmt_port),
1892 vppcom_proto_str (session->session_type),
1893 vcl_session_state_str (session->session_state));
1897 /* Attempt to connect a connectionless listener */
1898 if (PREDICT_FALSE (session->session_state == VCL_STATE_LISTEN))
1900 if (session->session_type != VPPCOM_PROTO_UDP)
1901 return VPPCOM_EINVAL;
1902 vcl_send_session_unlisten (wrk, session);
1903 session->session_state = VCL_STATE_CLOSED;
1906 session->transport.is_ip4 = server_ep->is_ip4;
1907 vcl_ip_copy_from_ep (&session->transport.rmt_ip, server_ep);
1908 session->transport.rmt_port = server_ep->port;
1909 session->parent_handle = VCL_INVALID_SESSION_HANDLE;
1910 session->flags |= VCL_SESSION_F_CONNECTED;
1912 VDBG (0, "session %u: connecting to peer %U:%d proto %s",
1913 session->session_index, vcl_format_ip46_address,
1914 &session->transport.rmt_ip,
1915 session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
1916 clib_net_to_host_u16 (session->transport.rmt_port),
1917 vppcom_proto_str (session->session_type));
1919 vcl_send_session_connect (wrk, session);
1921 if (vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK))
1923 /* State set to STATE_UPDATED to ensure the session is not assumed
1924 * to be ready and to also allow the app to close it prior to vpp's
1925 * connected reply. */
1926 session->session_state = VCL_STATE_UPDATED;
1927 return VPPCOM_EINPROGRESS;
1931 * Wait for reply from vpp if blocking
1933 rv = vppcom_wait_for_session_state_change (session_index, VCL_STATE_READY,
1934 vcm->cfg.session_timeout);
1936 session = vcl_session_get (wrk, session_index);
1937 VDBG (0, "session %u [0x%llx]: connect %s!", session->session_index,
1938 session->vpp_handle, rv ? "failed" : "succeeded");
1944 vppcom_session_stream_connect (uint32_t session_handle,
1945 uint32_t parent_session_handle)
1947 vcl_worker_t *wrk = vcl_worker_get_current ();
1948 vcl_session_t *session, *parent_session;
1949 u32 session_index, parent_session_index;
1952 session = vcl_session_get_w_handle (wrk, session_handle);
1954 return VPPCOM_EBADFD;
1955 parent_session = vcl_session_get_w_handle (wrk, parent_session_handle);
1956 if (!parent_session)
1957 return VPPCOM_EBADFD;
1959 session_index = session->session_index;
1960 parent_session_index = parent_session->session_index;
1961 if (PREDICT_FALSE (session->flags & VCL_SESSION_F_IS_VEP))
1963 VDBG (0, "ERROR: cannot connect epoll session %u!",
1964 session->session_index);
1965 return VPPCOM_EBADFD;
1968 if (PREDICT_FALSE (vcl_session_is_ready (session)))
1971 "session handle %u [0x%llx]: session already "
1972 "connected to session %u [0x%llx] proto %s, state 0x%x (%s)",
1973 session_handle, session->vpp_handle, parent_session_handle,
1974 parent_session->vpp_handle,
1975 vppcom_proto_str (session->session_type), session->session_state,
1976 vcl_session_state_str (session->session_state));
1980 /* Connect to quic session specifics */
1981 session->transport.is_ip4 = parent_session->transport.is_ip4;
1982 session->transport.rmt_ip.ip4.as_u32 = (uint32_t) 1;
1983 session->transport.rmt_port = 0;
1984 session->parent_handle = parent_session->vpp_handle;
1986 VDBG (0, "session handle %u: connecting to session %u [0x%llx]",
1987 session_handle, parent_session_handle, parent_session->vpp_handle);
1990 * Send connect request and wait for reply from vpp
1992 vcl_send_session_connect (wrk, session);
1993 rv = vppcom_wait_for_session_state_change (session_index, VCL_STATE_READY,
1994 vcm->cfg.session_timeout);
1996 session->listener_index = parent_session_index;
1997 parent_session = vcl_session_get_w_handle (wrk, parent_session_handle);
1999 parent_session->n_accepted_sessions++;
2001 session = vcl_session_get (wrk, session_index);
2002 VDBG (0, "session %u [0x%llx]: connect %s!", session->session_index,
2003 session->vpp_handle, rv ? "failed" : "succeeded");
2009 vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
2012 vcl_worker_t *wrk = vcl_worker_get_current ();
2013 int rv, n_read = 0, is_nonblocking;
2014 vcl_session_t *s = 0;
2015 svm_fifo_t *rx_fifo;
2020 if (PREDICT_FALSE (!buf))
2021 return VPPCOM_EFAULT;
2023 s = vcl_session_get_w_handle (wrk, session_handle);
2024 if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP)))
2025 return VPPCOM_EBADFD;
2027 if (PREDICT_FALSE (!vcl_session_is_open (s)))
2029 VDBG (0, "session %u[0x%llx] is not open! state 0x%x (%s)",
2030 s->session_index, s->vpp_handle, s->session_state,
2031 vcl_session_state_str (s->session_state));
2032 return vcl_session_closed_error (s);
2035 if (PREDICT_FALSE (s->flags & VCL_SESSION_F_RD_SHUTDOWN))
2037 /* Vpp would ack the incoming data and enqueue it for reading.
2038 * So even if SHUT_RD is set, we can still read() the data if
2039 * the session is ready.
2041 if (!vcl_session_read_ready (s))
2047 is_nonblocking = vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK);
2048 is_ct = vcl_session_is_ct (s);
2049 mq = wrk->app_event_queue;
2050 rx_fifo = is_ct ? s->ct_rx_fifo : s->rx_fifo;
2051 s->flags &= ~VCL_SESSION_F_HAS_RX_EVT;
2053 if (svm_fifo_is_empty_cons (rx_fifo))
2056 svm_fifo_unset_event (s->rx_fifo);
2057 svm_fifo_unset_event (rx_fifo);
2060 if (vcl_session_is_closing (s))
2061 return vcl_session_closing_error (s);
2062 return VPPCOM_EWOULDBLOCK;
2064 while (svm_fifo_is_empty_cons (rx_fifo))
2066 if (vcl_session_is_closing (s))
2067 return vcl_session_closing_error (s);
2070 svm_fifo_unset_event (s->rx_fifo);
2071 svm_fifo_unset_event (rx_fifo);
2073 svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
2074 vcl_worker_flush_mq_events (wrk);
2081 rv = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
2083 rv = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
2092 if (svm_fifo_is_empty_cons (rx_fifo))
2095 svm_fifo_unset_event (s->rx_fifo);
2096 svm_fifo_unset_event (rx_fifo);
2097 if (!svm_fifo_is_empty_cons (rx_fifo)
2098 && svm_fifo_set_event (rx_fifo) && is_nonblocking)
2100 vec_add2 (wrk->unhandled_evts_vector, e, 1);
2101 e->event_type = SESSION_IO_EVT_RX;
2102 e->session_index = s->session_index;
2105 else if (PREDICT_FALSE (rv < n && !s->is_dgram))
2107 /* More data enqueued while reading. Try to drain it
2108 * or fill the buffer. Avoid doing that for dgrams */
2114 if (PREDICT_FALSE (svm_fifo_needs_deq_ntf (rx_fifo, n_read)))
2116 svm_fifo_clear_deq_ntf (rx_fifo);
2117 app_send_io_evt_to_vpp (s->vpp_evt_q,
2118 s->rx_fifo->shr->master_session_index,
2119 SESSION_IO_EVT_RX, SVM_Q_WAIT);
2122 VDBG (2, "session %u[0x%llx]: read %d bytes from (%p)", s->session_index,
2123 s->vpp_handle, n_read, rx_fifo);
2129 vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
2131 return (vppcom_session_read_internal (session_handle, buf, n, 0));
2135 vppcom_session_peek (uint32_t session_handle, void *buf, int n)
2137 return (vppcom_session_read_internal (session_handle, buf, n, 1));
2141 vppcom_session_read_segments (uint32_t session_handle,
2142 vppcom_data_segment_t * ds, uint32_t n_segments,
2145 vcl_worker_t *wrk = vcl_worker_get_current ();
2146 int n_read = 0, is_nonblocking;
2147 vcl_session_t *s = 0;
2148 svm_fifo_t *rx_fifo;
2152 s = vcl_session_get_w_handle (wrk, session_handle);
2153 if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP)))
2154 return VPPCOM_EBADFD;
2156 if (PREDICT_FALSE (!vcl_session_is_open (s)))
2157 return vcl_session_closed_error (s);
2159 is_nonblocking = vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK);
2160 is_ct = vcl_session_is_ct (s);
2161 mq = wrk->app_event_queue;
2162 rx_fifo = is_ct ? s->ct_rx_fifo : s->rx_fifo;
2163 s->flags &= ~VCL_SESSION_F_HAS_RX_EVT;
2165 if (svm_fifo_is_empty_cons (rx_fifo))
2168 svm_fifo_unset_event (s->rx_fifo);
2169 svm_fifo_unset_event (rx_fifo);
2172 if (vcl_session_is_closing (s))
2173 return vcl_session_closing_error (s);
2174 return VPPCOM_EWOULDBLOCK;
2176 while (svm_fifo_is_empty_cons (rx_fifo))
2178 if (vcl_session_is_closing (s))
2179 return vcl_session_closing_error (s);
2182 svm_fifo_unset_event (s->rx_fifo);
2183 svm_fifo_unset_event (rx_fifo);
2185 svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
2186 vcl_worker_flush_mq_events (wrk);
2190 n_read = svm_fifo_segments (rx_fifo, s->rx_bytes_pending,
2191 (svm_fifo_seg_t *) ds, &n_segments, max_bytes);
2193 return VPPCOM_EAGAIN;
2195 if (svm_fifo_max_dequeue_cons (rx_fifo) == n_read)
2198 svm_fifo_unset_event (s->rx_fifo);
2199 svm_fifo_unset_event (rx_fifo);
2200 if (svm_fifo_max_dequeue_cons (rx_fifo) != n_read
2201 && svm_fifo_set_event (rx_fifo)
2202 && vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
2205 vec_add2 (wrk->unhandled_evts_vector, e, 1);
2206 e->event_type = SESSION_IO_EVT_RX;
2207 e->session_index = s->session_index;
2211 s->rx_bytes_pending += n_read;
2216 vppcom_session_free_segments (uint32_t session_handle, uint32_t n_bytes)
2218 vcl_worker_t *wrk = vcl_worker_get_current ();
2222 s = vcl_session_get_w_handle (wrk, session_handle);
2223 if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP)))
2226 is_ct = vcl_session_is_ct (s);
2227 svm_fifo_dequeue_drop (is_ct ? s->ct_rx_fifo : s->rx_fifo, n_bytes);
2229 ASSERT (s->rx_bytes_pending >= n_bytes);
2230 s->rx_bytes_pending -= n_bytes;
2234 vcl_fifo_is_writeable (svm_fifo_t * f, u32 len, u8 is_dgram)
2236 u32 max_enq = svm_fifo_max_enqueue_prod (f);
2238 return max_enq >= (sizeof (session_dgram_hdr_t) + len);
2244 vppcom_session_write_inline (vcl_worker_t *wrk, vcl_session_t *s, void *buf,
2245 size_t n, u8 is_flush, u8 is_dgram)
2247 int n_write, is_nonblocking;
2248 session_evt_type_t et;
2249 svm_fifo_t *tx_fifo;
2253 /* Accept zero length writes but just return */
2254 if (PREDICT_FALSE (!n))
2257 if (PREDICT_FALSE (!buf))
2258 return VPPCOM_EFAULT;
2260 if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
2262 VDBG (0, "ERROR: session %u [0x%llx]: cannot write to an epoll"
2263 " session!", s->session_index, s->vpp_handle);
2264 return VPPCOM_EBADFD;
2267 if (PREDICT_FALSE (!vcl_session_is_open (s)))
2269 VDBG (1, "session %u [0x%llx]: is not open! state 0x%x (%s)",
2270 s->session_index, s->vpp_handle, s->session_state,
2271 vcl_session_state_str (s->session_state));
2272 return vcl_session_closed_error (s);;
2275 if (PREDICT_FALSE (s->flags & VCL_SESSION_F_WR_SHUTDOWN))
2277 VDBG (1, "session %u [0x%llx]: is shutdown! state 0x%x (%s)",
2278 s->session_index, s->vpp_handle, s->session_state,
2279 vcl_session_state_str (s->session_state));
2280 return VPPCOM_EPIPE;
2283 is_ct = vcl_session_is_ct (s);
2284 tx_fifo = is_ct ? s->ct_tx_fifo : s->tx_fifo;
2285 is_nonblocking = vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK);
2287 mq = wrk->app_event_queue;
2288 if (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram))
2292 return VPPCOM_EWOULDBLOCK;
2294 while (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram))
2296 svm_fifo_add_want_deq_ntf (tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
2297 if (vcl_session_is_closing (s))
2298 return vcl_session_closing_error (s);
2300 svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
2301 vcl_worker_flush_mq_events (wrk);
2305 et = SESSION_IO_EVT_TX;
2306 if (is_flush && !is_ct)
2307 et = SESSION_IO_EVT_TX_FLUSH;
2311 et = vcl_session_dgram_tx_evt (s, et);
2313 app_send_dgram_raw_gso (tx_fifo, &s->transport, s->vpp_evt_q, buf, n,
2314 s->gso_size, et, 0 /* do_evt */, SVM_Q_WAIT);
2318 n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
2319 0 /* do_evt */, SVM_Q_WAIT);
2322 if (svm_fifo_set_event (s->tx_fifo))
2323 app_send_io_evt_to_vpp (
2324 s->vpp_evt_q, s->tx_fifo->shr->master_session_index, et, SVM_Q_WAIT);
2326 /* The underlying fifo segment can run out of memory */
2327 if (PREDICT_FALSE (n_write < 0))
2328 return VPPCOM_EAGAIN;
2330 VDBG (2, "session %u [0x%llx]: wrote %d bytes", s->session_index,
2331 s->vpp_handle, n_write);
2337 vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
2339 vcl_worker_t *wrk = vcl_worker_get_current ();
2342 s = vcl_session_get_w_handle (wrk, session_handle);
2343 if (PREDICT_FALSE (!s))
2344 return VPPCOM_EBADFD;
2346 return vppcom_session_write_inline (wrk, s, buf, n, 0 /* is_flush */,
2347 s->is_dgram ? 1 : 0);
2351 vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n)
2353 vcl_worker_t *wrk = vcl_worker_get_current ();
2356 s = vcl_session_get_w_handle (wrk, session_handle);
2357 if (PREDICT_FALSE (!s))
2358 return VPPCOM_EBADFD;
2360 return vppcom_session_write_inline (wrk, s, buf, n, 1 /* is_flush */,
2361 s->is_dgram ? 1 : 0);
2364 #define vcl_fifo_rx_evt_valid_or_break(_s) \
2365 if (PREDICT_FALSE (!_s->rx_fifo)) \
2367 if (PREDICT_FALSE (svm_fifo_is_empty (_s->rx_fifo))) \
2369 if (!vcl_session_is_ct (_s)) \
2371 svm_fifo_unset_event (_s->rx_fifo); \
2372 if (svm_fifo_is_empty (_s->rx_fifo)) \
2375 else if (svm_fifo_is_empty (_s->ct_rx_fifo)) \
2377 svm_fifo_unset_event (_s->rx_fifo); /* rx evts on actual fifo*/ \
2378 if (svm_fifo_is_empty (_s->ct_rx_fifo)) \
2384 vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
2385 unsigned long n_bits, unsigned long *read_map,
2386 unsigned long *write_map,
2387 unsigned long *except_map, u32 * bits_set)
2389 session_disconnected_msg_t *disconnected_msg;
2390 session_connected_msg_t *connected_msg;
2394 switch (e->event_type)
2396 case SESSION_IO_EVT_RX:
2397 sid = e->session_index;
2398 s = vcl_session_get (wrk, sid);
2399 if (!s || !vcl_session_is_open (s))
2401 vcl_fifo_rx_evt_valid_or_break (s);
2402 if (sid < n_bits && read_map)
2404 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2408 case SESSION_IO_EVT_TX:
2409 sid = e->session_index;
2410 s = vcl_session_get (wrk, sid);
2411 if (!s || !vcl_session_is_open (s))
2413 if (sid < n_bits && write_map)
2415 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2419 case SESSION_CTRL_EVT_ACCEPTED:
2421 s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
2423 s = vcl_session_get (wrk, e->session_index);
2426 sid = s->session_index;
2427 if (sid < n_bits && read_map)
2429 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2433 case SESSION_CTRL_EVT_CONNECTED:
2436 connected_msg = (session_connected_msg_t *) e->data;
2437 sid = vcl_session_connected_handler (wrk, connected_msg);
2440 sid = e->session_index;
2441 if (sid == VCL_INVALID_SESSION_INDEX)
2443 if (!(sid < n_bits && write_map))
2445 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2447 s = vcl_session_get (wrk, sid);
2448 /* We didn't have a fifo when the event was added */
2449 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
2451 case SESSION_CTRL_EVT_DISCONNECTED:
2454 disconnected_msg = (session_disconnected_msg_t *) e->data;
2455 s = vcl_session_disconnected_handler (wrk, disconnected_msg);
2461 s = vcl_session_get (wrk, e->session_index);
2462 s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT;
2464 if (vcl_session_is_closed (s))
2466 if (s && (s->flags & VCL_SESSION_F_PENDING_FREE))
2467 vcl_session_free (wrk, s);
2470 sid = s->session_index;
2471 if (sid < n_bits && except_map)
2473 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2477 case SESSION_CTRL_EVT_RESET:
2481 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
2482 s = vcl_session_get (wrk, sid);
2486 sid = e->session_index;
2487 s = vcl_session_get (wrk, sid);
2488 s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT;
2490 if (vcl_session_is_closed (s))
2492 if (s && (s->flags & VCL_SESSION_F_PENDING_FREE))
2493 vcl_session_free (wrk, s);
2496 if (sid < n_bits && except_map)
2498 clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
2502 case SESSION_CTRL_EVT_UNLISTEN_REPLY:
2503 vcl_session_unlisten_reply_handler (wrk, e->data);
2505 case SESSION_CTRL_EVT_MIGRATED:
2506 vcl_session_migrated_handler (wrk, e->data);
2508 case SESSION_CTRL_EVT_CLEANUP:
2509 vcl_session_cleanup_handler (wrk, e->data);
2511 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
2512 vcl_session_worker_update_reply_handler (wrk, e->data);
2514 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
2515 vcl_session_req_worker_update_handler (wrk, e->data);
2517 case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
2518 vcl_session_app_add_segment_handler (wrk, e->data);
2520 case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
2521 vcl_session_app_del_segment_handler (wrk, e->data);
2523 case SESSION_CTRL_EVT_APP_WRK_RPC:
2524 vcl_worker_rpc_handler (wrk, e->data);
2527 clib_warning ("unhandled: %u", e->event_type);
2533 vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
2534 unsigned long n_bits, unsigned long *read_map,
2535 unsigned long *write_map, unsigned long *except_map,
2536 double time_to_wait, u32 * bits_set)
2538 svm_msg_q_msg_t *msg;
2542 if (svm_msg_q_is_empty (mq))
2549 else if (time_to_wait < 0)
2550 svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
2553 if (svm_msg_q_timedwait (mq, time_to_wait))
2557 vcl_mq_dequeue_batch (wrk, mq, ~0);
2559 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
2561 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
2562 e = svm_msg_q_msg_data (mq, msg);
2563 vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
2564 except_map, bits_set);
2565 svm_msg_q_free_msg (mq, msg);
2567 vec_reset_length (wrk->mq_msg_vector);
2568 vcl_handle_pending_wrk_updates (wrk);
2573 vppcom_select_condvar (vcl_worker_t * wrk, int n_bits,
2574 vcl_si_set * read_map, vcl_si_set * write_map,
2575 vcl_si_set * except_map, double time_to_wait,
2578 double wait = 0, start = 0;
2582 wait = time_to_wait;
2583 start = clib_time_now (&wrk->clib_time);
2588 vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
2589 write_map, except_map, wait, bits_set);
2595 wait = wait - (clib_time_now (&wrk->clib_time) - start);
2603 vppcom_select_eventfd (vcl_worker_t * wrk, int n_bits,
2604 vcl_si_set * read_map, vcl_si_set * write_map,
2605 vcl_si_set * except_map, double time_to_wait,
2608 vcl_mq_evt_conn_t *mqc;
2609 int __clib_unused n_read;
2613 if (PREDICT_FALSE (wrk->api_client_handle == ~0))
2615 vcl_api_retry_attach (wrk);
2619 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
2620 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
2621 vec_len (wrk->mq_events), time_to_wait);
2622 for (i = 0; i < n_mq_evts; i++)
2624 if (PREDICT_FALSE (wrk->mq_events[i].data.u32 == ~0))
2626 vcl_api_handle_disconnect (wrk);
2630 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
2631 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
2632 vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
2633 except_map, 0, bits_set);
2636 return (n_mq_evts > 0 ? (int) *bits_set : 0);
2640 vppcom_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map,
2641 vcl_si_set * except_map, double time_to_wait)
2643 u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
2644 vcl_worker_t *wrk = vcl_worker_get_current ();
2645 vcl_session_t *s = 0;
2648 if (n_bits && read_map)
2650 clib_bitmap_validate (wrk->rd_bitmap, minbits);
2651 clib_memcpy_fast (wrk->rd_bitmap, read_map,
2652 vec_len (wrk->rd_bitmap) * sizeof (vcl_si_set));
2653 memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (vcl_si_set));
2655 if (n_bits && write_map)
2657 clib_bitmap_validate (wrk->wr_bitmap, minbits);
2658 clib_memcpy_fast (wrk->wr_bitmap, write_map,
2659 vec_len (wrk->wr_bitmap) * sizeof (vcl_si_set));
2660 memset (write_map, 0, vec_len (wrk->wr_bitmap) * sizeof (vcl_si_set));
2662 if (n_bits && except_map)
2664 clib_bitmap_validate (wrk->ex_bitmap, minbits);
2665 clib_memcpy_fast (wrk->ex_bitmap, except_map,
2666 vec_len (wrk->ex_bitmap) * sizeof (vcl_si_set));
2667 memset (except_map, 0, vec_len (wrk->ex_bitmap) * sizeof (vcl_si_set));
2676 clib_bitmap_foreach (sid, wrk->wr_bitmap)
2678 if (!(s = vcl_session_get (wrk, sid)))
2680 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2685 if (vcl_session_write_ready (s))
2687 clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
2692 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF);
2700 clib_bitmap_foreach (sid, wrk->rd_bitmap)
2702 if (!(s = vcl_session_get (wrk, sid)))
2704 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2709 if (vcl_session_read_ready (s))
2711 clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
2718 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
2720 vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
2721 read_map, write_map, except_map, &bits_set);
2723 vec_reset_length (wrk->unhandled_evts_vector);
2725 if (vcm->cfg.use_mq_eventfd)
2726 vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
2727 time_to_wait, &bits_set);
2729 vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
2730 time_to_wait, &bits_set);
2736 vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_handle)
2738 vppcom_epoll_t *vep;
2739 u32 sh = vep_handle;
2742 if (VPPCOM_DEBUG <= 3)
2745 s = vcl_session_get_w_handle (wrk, vep_handle);
2746 if (PREDICT_FALSE (!s))
2748 VDBG (0, "ERROR: Invalid vep_sh (%u)!", vep_handle);
2751 if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP)))
2753 VDBG (0, "ERROR: vep_sh (%u) is not a vep!", vep_handle);
2757 VDBG (0, "vep_sh (%u): Dumping epoll chain\n"
2760 " is_vep_session = %u\n"
2761 " next_sh = 0x%x (%u)\n"
2762 "}\n", vep_handle, s->flags & VCL_SESSION_F_IS_VEP,
2763 s->flags & VCL_SESSION_F_IS_VEP_SESSION, vep->next_sh, vep->next_sh);
2765 for (sh = vep->next_sh; sh != ~0; sh = vep->next_sh)
2767 s = vcl_session_get_w_handle (wrk, sh);
2768 if (PREDICT_FALSE (!s))
2770 VDBG (0, "ERROR: Invalid sh (%u)!", sh);
2773 if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
2775 VDBG (0, "ERROR: sh (%u) is a vep!", vep_handle);
2777 else if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION)))
2779 VDBG (0, "ERROR: sh (%u) is not a vep session handle!", sh);
2783 if (PREDICT_FALSE (vep->vep_sh != vep_handle))
2784 VDBG (0, "ERROR: session (%u) vep_sh (%u) != vep_sh (%u)!",
2785 sh, s->vep.vep_sh, vep_handle);
2786 if (s->flags & VCL_SESSION_F_IS_VEP_SESSION)
2788 VDBG (0, "vep_sh[%u]: sh 0x%x (%u)\n"
2790 " next_sh = 0x%x (%u)\n"
2791 " prev_sh = 0x%x (%u)\n"
2792 " vep_sh = 0x%x (%u)\n"
2793 " ev.events = 0x%x\n"
2794 " ev.data.u64 = 0x%llx\n"
2797 vep_handle, sh, sh, vep->next_sh, vep->next_sh, vep->prev_sh,
2798 vep->prev_sh, vep->vep_sh, vep->vep_sh, vep->ev.events,
2799 vep->ev.data.u64, vep->et_mask);
2804 VDBG (0, "vep_sh (%u): Dump complete!\n", vep_handle);
2808 vppcom_epoll_create (void)
2810 vcl_worker_t *wrk = vcl_worker_get_current ();
2811 vcl_session_t *vep_session;
2813 vep_session = vcl_session_alloc (wrk);
2815 vep_session->flags |= VCL_SESSION_F_IS_VEP;
2816 vep_session->vep.vep_sh = ~0;
2817 vep_session->vep.next_sh = ~0;
2818 vep_session->vep.prev_sh = ~0;
2819 vep_session->vpp_handle = ~0;
2821 vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_session->session_index);
2822 VDBG (0, "Created vep_idx %u", vep_session->session_index);
2824 return vcl_session_handle (vep_session);
2828 vcl_epoll_ctl_add_unhandled_event (vcl_worker_t *wrk, vcl_session_t *s,
2829 u8 is_epollet, session_evt_type_t evt)
2833 if (s->vep.lt_next == VCL_INVALID_SESSION_INDEX)
2834 vcl_epoll_lt_add (wrk, s);
2838 session_event_t e = { 0 };
2839 e.session_index = s->session_index;
2841 if (evt == SESSION_IO_EVT_RX)
2842 s->flags &= ~VCL_SESSION_F_HAS_RX_EVT;
2843 vec_add1 (wrk->unhandled_evts_vector, e);
2847 vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
2848 struct epoll_event *event)
2850 vcl_worker_t *wrk = vcl_worker_get_current ();
2851 int rv = VPPCOM_OK, add_evt = 0;
2852 vcl_session_t *vep_session;
2855 if (vep_handle == session_handle)
2857 VDBG (0, "vep_sh == session handle (%u)!", vep_handle);
2858 return VPPCOM_EINVAL;
2861 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
2862 if (PREDICT_FALSE (!vep_session))
2864 VDBG (0, "Invalid vep_sh (%u)!", vep_handle);
2865 return VPPCOM_EBADFD;
2867 if (PREDICT_FALSE (!(vep_session->flags & VCL_SESSION_F_IS_VEP)))
2869 VDBG (0, "vep_sh (%u) is not a vep!", vep_handle);
2870 return VPPCOM_EINVAL;
2873 ASSERT (vep_session->vep.vep_sh == ~0);
2874 ASSERT (vep_session->vep.prev_sh == ~0);
2876 s = vcl_session_get_w_handle (wrk, session_handle);
2877 if (PREDICT_FALSE (!s))
2879 VDBG (0, "Invalid session_handle (%u)!", session_handle);
2880 return VPPCOM_EBADFD;
2882 if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
2884 VDBG (0, "session_handle (%u) is a vep!", vep_handle);
2885 return VPPCOM_EINVAL;
2891 if (PREDICT_FALSE (!event))
2893 VDBG (0, "EPOLL_CTL_ADD: NULL pointer to epoll_event structure!");
2894 return VPPCOM_EINVAL;
2896 if (s->flags & VCL_SESSION_F_IS_VEP_SESSION)
2898 VDBG (0, "EPOLL_CTL_ADD: %u already epolled!", s->session_index);
2902 if (vep_session->vep.next_sh != ~0)
2904 vcl_session_t *next_session;
2905 next_session = vcl_session_get_w_handle (wrk,
2906 vep_session->vep.next_sh);
2907 if (PREDICT_FALSE (!next_session))
2909 VDBG (0, "EPOLL_CTL_ADD: Invalid vep.next_sh (%u) on "
2910 "vep_idx (%u)!", vep_session->vep.next_sh, vep_handle);
2911 return VPPCOM_EBADFD;
2913 ASSERT (next_session->vep.prev_sh == vep_handle);
2914 next_session->vep.prev_sh = session_handle;
2916 s->vep.next_sh = vep_session->vep.next_sh;
2917 s->vep.prev_sh = vep_handle;
2918 s->vep.vep_sh = vep_handle;
2919 s->vep.et_mask = VEP_DEFAULT_ET_MASK;
2920 s->vep.lt_next = VCL_INVALID_SESSION_INDEX;
2922 s->vep.ev.events |= EPOLLHUP | EPOLLERR;
2923 s->flags &= ~VCL_SESSION_F_IS_VEP;
2924 s->flags |= VCL_SESSION_F_IS_VEP_SESSION;
2925 vep_session->vep.next_sh = session_handle;
2927 if ((event->events & EPOLLOUT))
2929 int write_ready = vcl_session_write_ready (s);
2931 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
2932 if (write_ready > 0)
2934 /* Generate EPOLLOUT if tx fifo not full */
2935 vcl_epoll_ctl_add_unhandled_event (
2936 wrk, s, event->events & EPOLLET, SESSION_IO_EVT_TX);
2941 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF);
2944 /* Generate EPOLLIN if rx fifo has data */
2945 if ((event->events & EPOLLIN) && (vcl_session_read_ready (s) > 0))
2947 vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET,
2951 if (!add_evt && vcl_session_is_closing (s))
2953 session_event_t e = { 0 };
2954 if (s->session_state == VCL_STATE_VPP_CLOSING)
2955 e.event_type = SESSION_CTRL_EVT_DISCONNECTED;
2957 e.event_type = SESSION_CTRL_EVT_RESET;
2958 e.session_index = s->session_index;
2960 vec_add1 (wrk->unhandled_evts_vector, e);
2962 VDBG (1, "EPOLL_CTL_ADD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
2963 vep_handle, session_handle, event->events, event->data.u64);
2964 vcl_evt (VCL_EVT_EPOLL_CTLADD, s, event->events, event->data.u64);
2968 if (PREDICT_FALSE (!event))
2970 VDBG (0, "EPOLL_CTL_MOD: NULL pointer to epoll_event structure!");
2974 else if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION)))
2976 VDBG (0, "sh %u EPOLL_CTL_MOD: not a vep session!", session_handle);
2980 else if (PREDICT_FALSE (s->vep.vep_sh != vep_handle))
2982 VDBG (0, "EPOLL_CTL_MOD: sh %u vep_sh (%u) != vep_sh (%u)!",
2983 session_handle, s->vep.vep_sh, vep_handle);
2988 /* Generate EPOLLOUT if session write ready and event was not on */
2989 if ((event->events & EPOLLOUT) && !(s->vep.ev.events & EPOLLOUT))
2991 /* Fifo size load acq synchronized with update store rel */
2992 int write_ready = vcl_session_write_ready (s);
2994 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
2995 if (write_ready > 0)
2996 vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET,
2999 /* Request deq ntf in case dequeue happened while updating flag */
3000 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF);
3002 else if (!(event->events & EPOLLOUT))
3003 vcl_session_del_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
3005 /* Generate EPOLLIN if session read ready and event was not on */
3006 if ((event->events & EPOLLIN) && !(s->vep.ev.events & EPOLLIN) &&
3007 (vcl_session_read_ready (s) > 0))
3009 vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET,
3012 s->vep.et_mask = VEP_DEFAULT_ET_MASK;
3014 s->vep.ev.events |= EPOLLHUP | EPOLLERR;
3016 VDBG (1, "EPOLL_CTL_MOD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
3017 vep_handle, session_handle, event->events, event->data.u64);
3021 if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION)))
3023 VDBG (0, "EPOLL_CTL_DEL: %u not a vep session!", session_handle);
3027 else if (PREDICT_FALSE (s->vep.vep_sh != vep_handle))
3029 VDBG (0, "EPOLL_CTL_DEL: sh %u vep_sh (%u) != vep_sh (%u)!",
3030 session_handle, s->vep.vep_sh, vep_handle);
3035 if (s->vep.prev_sh == vep_handle)
3036 vep_session->vep.next_sh = s->vep.next_sh;
3039 vcl_session_t *prev_session;
3040 prev_session = vcl_session_get_w_handle (wrk, s->vep.prev_sh);
3041 if (PREDICT_FALSE (!prev_session))
3043 VDBG (0, "EPOLL_CTL_DEL: Invalid prev_sh (%u) on sh (%u)!",
3044 s->vep.prev_sh, session_handle);
3045 return VPPCOM_EBADFD;
3047 ASSERT (prev_session->vep.next_sh == session_handle);
3048 prev_session->vep.next_sh = s->vep.next_sh;
3050 if (s->vep.next_sh != ~0)
3052 vcl_session_t *next_session;
3053 next_session = vcl_session_get_w_handle (wrk, s->vep.next_sh);
3054 if (PREDICT_FALSE (!next_session))
3056 VDBG (0, "EPOLL_CTL_DEL: Invalid next_sh (%u) on sh (%u)!",
3057 s->vep.next_sh, session_handle);
3058 return VPPCOM_EBADFD;
3060 ASSERT (next_session->vep.prev_sh == session_handle);
3061 next_session->vep.prev_sh = s->vep.prev_sh;
3064 if (s->vep.lt_next != VCL_INVALID_SESSION_INDEX)
3065 vcl_epoll_lt_del (wrk, s);
3067 memset (&s->vep, 0, sizeof (s->vep));
3068 s->vep.next_sh = ~0;
3069 s->vep.prev_sh = ~0;
3071 s->vep.lt_next = VCL_INVALID_SESSION_INDEX;
3072 s->flags &= ~VCL_SESSION_F_IS_VEP_SESSION;
3074 if (vcl_session_is_open (s))
3075 vcl_session_del_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
3077 VDBG (1, "EPOLL_CTL_DEL: vep_idx %u, sh %u!", vep_handle,
3079 vcl_evt (VCL_EVT_EPOLL_CTLDEL, s, vep_sh);
3083 VDBG (0, "Invalid operation (%d)!", op);
3087 vep_verify_epoll_chain (wrk, vep_handle);
3094 vcl_ep_session_needs_evt (vcl_session_t *s, u32 evt)
3096 /* No event if not epolled / events reset on hup or level-trigger on */
3097 return ((s->vep.ev.events & evt) &&
3098 s->vep.lt_next == VCL_INVALID_SESSION_INDEX);
3102 vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
3103 struct epoll_event *events, u32 * num_ev)
3105 session_disconnected_msg_t *disconnected_msg;
3106 session_connected_msg_t *connected_msg;
3107 u32 sid = ~0, session_events;
3108 u64 session_evt_data = ~0;
3112 switch (e->event_type)
3114 case SESSION_IO_EVT_RX:
3115 sid = e->session_index;
3116 s = vcl_session_get (wrk, sid);
3117 if (vcl_session_is_closed (s))
3119 vcl_fifo_rx_evt_valid_or_break (s);
3120 if (!vcl_ep_session_needs_evt (s, EPOLLIN) ||
3121 (s->flags & VCL_SESSION_F_HAS_RX_EVT))
3123 session_events = s->vep.ev.events;
3125 events[*num_ev].events = EPOLLIN;
3126 session_evt_data = s->vep.ev.data.u64;
3127 s->flags |= VCL_SESSION_F_HAS_RX_EVT;
3129 case SESSION_IO_EVT_TX:
3130 sid = e->session_index;
3131 s = vcl_session_get (wrk, sid);
3132 if (!s || !vcl_session_is_open (s))
3134 svm_fifo_reset_has_deq_ntf (vcl_session_is_ct (s) ? s->ct_tx_fifo :
3136 if (!vcl_ep_session_needs_evt (s, EPOLLOUT))
3138 session_events = s->vep.ev.events;
3140 events[*num_ev].events = EPOLLOUT;
3141 session_evt_data = s->vep.ev.data.u64;
3143 case SESSION_CTRL_EVT_ACCEPTED:
3145 s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
3147 s = vcl_session_get (wrk, e->session_index);
3148 if (!s || !vcl_ep_session_needs_evt (s, EPOLLIN))
3150 sid = s->session_index;
3151 session_events = s->vep.ev.events;
3153 events[*num_ev].events = EPOLLIN;
3154 session_evt_data = s->vep.ev.data.u64;
3156 case SESSION_CTRL_EVT_CONNECTED:
3159 connected_msg = (session_connected_msg_t *) e->data;
3160 sid = vcl_session_connected_handler (wrk, connected_msg);
3163 sid = e->session_index;
3164 s = vcl_session_get (wrk, sid);
3165 if (vcl_session_is_closed (s) || !vcl_ep_session_needs_evt (s, EPOLLOUT))
3167 /* We didn't have a fifo when the event was added */
3168 vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
3170 session_events = s->vep.ev.events;
3171 /* Generate EPOLLOUT because there's no connected event */
3172 events[*num_ev].events = EPOLLOUT;
3173 session_evt_data = s->vep.ev.data.u64;
3174 if (s->session_state == VCL_STATE_DETACHED)
3176 events[*num_ev].events |= EPOLLHUP;
3177 s->vep.ev.events = 0;
3180 case SESSION_CTRL_EVT_DISCONNECTED:
3183 disconnected_msg = (session_disconnected_msg_t *) e->data;
3184 s = vcl_session_disconnected_handler (wrk, disconnected_msg);
3188 s = vcl_session_get (wrk, e->session_index);
3189 s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT;
3191 if (vcl_session_is_closed (s) || !vcl_ep_session_needs_evt (s, EPOLLHUP))
3193 if (s && (s->flags & VCL_SESSION_F_PENDING_FREE))
3194 vcl_session_free (wrk, s);
3197 sid = s->session_index;
3198 session_events = s->vep.ev.events;
3200 if (EPOLLRDHUP & session_events)
3202 /* If app can distinguish between RDHUP and HUP,
3203 * we make finer control */
3204 events[*num_ev].events = EPOLLRDHUP;
3205 if (s->flags & VCL_SESSION_F_WR_SHUTDOWN)
3207 events[*num_ev].events |= EPOLLHUP;
3212 events[*num_ev].events = EPOLLHUP;
3214 session_evt_data = s->vep.ev.data.u64;
3215 s->vep.ev.events = 0;
3217 case SESSION_CTRL_EVT_BOUND:
3218 vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
3220 case SESSION_CTRL_EVT_RESET:
3224 vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
3225 s = vcl_session_get (wrk, sid);
3229 sid = e->session_index;
3230 s = vcl_session_get (wrk, sid);
3231 s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT;
3233 if (vcl_session_is_closed (s) || !vcl_ep_session_needs_evt (s, EPOLLHUP))
3235 if (s && (s->flags & VCL_SESSION_F_PENDING_FREE))
3236 vcl_session_free (wrk, s);
3239 session_events = s->vep.ev.events;
3241 events[*num_ev].events = EPOLLERR | EPOLLHUP;
3242 if ((EPOLLRDHUP & session_events) &&
3243 (s->flags & VCL_SESSION_F_RD_SHUTDOWN))
3245 events[*num_ev].events |= EPOLLRDHUP;
3247 if ((EPOLLIN & session_events) && (s->flags & VCL_SESSION_F_RD_SHUTDOWN))
3249 events[*num_ev].events |= EPOLLIN;
3251 session_evt_data = s->vep.ev.data.u64;
3252 s->vep.ev.events = 0;
3254 case SESSION_CTRL_EVT_UNLISTEN_REPLY:
3255 vcl_session_unlisten_reply_handler (wrk, e->data);
3257 case SESSION_CTRL_EVT_MIGRATED:
3258 vcl_session_migrated_handler (wrk, e->data);
3260 case SESSION_CTRL_EVT_CLEANUP:
3261 vcl_session_cleanup_handler (wrk, e->data);
3263 case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
3264 vcl_session_req_worker_update_handler (wrk, e->data);
3266 case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
3267 vcl_session_worker_update_reply_handler (wrk, e->data);
3269 case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
3270 vcl_session_app_add_segment_handler (wrk, e->data);
3272 case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
3273 vcl_session_app_del_segment_handler (wrk, e->data);
3275 case SESSION_CTRL_EVT_APP_WRK_RPC:
3276 vcl_worker_rpc_handler (wrk, e->data);
3279 VDBG (0, "unhandled: %u", e->event_type);
3285 ASSERT (s->flags & VCL_SESSION_F_IS_VEP_SESSION);
3286 events[*num_ev].data.u64 = session_evt_data;
3287 if (EPOLLONESHOT & session_events)
3289 s = vcl_session_get (wrk, sid);
3290 if (!(events[*num_ev].events & EPOLLHUP))
3291 s->vep.ev.events = EPOLLHUP | EPOLLERR;
3293 else if (!(EPOLLET & session_events))
3295 s = vcl_session_get (wrk, sid);
3296 if (s->vep.lt_next == VCL_INVALID_SESSION_INDEX)
3297 vcl_epoll_lt_add (wrk, s);
3304 vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
3305 struct epoll_event *events, u32 maxevents,
3306 double wait_for_time, u32 * num_ev)
3308 svm_msg_q_msg_t *msg;
3312 if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
3313 goto handle_dequeued;
3315 if (svm_msg_q_is_empty (mq))
3319 else if (wait_for_time < 0)
3320 svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
3323 if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
3327 ASSERT (maxevents > *num_ev);
3328 vcl_mq_dequeue_batch (wrk, mq, ~0);
3331 for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
3333 msg = vec_elt_at_index (wrk->mq_msg_vector, i);
3334 e = svm_msg_q_msg_data (mq, msg);
3335 if (*num_ev < maxevents)
3336 vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
3338 vcl_handle_mq_event (wrk, e);
3339 svm_msg_q_free_msg (mq, msg);
3341 vec_reset_length (wrk->mq_msg_vector);
3342 vcl_handle_pending_wrk_updates (wrk);
3347 vppcom_epoll_wait_condvar (vcl_worker_t *wrk, struct epoll_event *events,
3348 int maxevents, u32 n_evts, double timeout_ms)
3355 end = clib_time_now (&wrk->clib_time) + (timeout_ms / 1e3);
3360 vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events, maxevents,
3361 timeout_ms, &n_evts);
3362 if (n_evts || !timeout_ms)
3365 while (end == -1 || clib_time_now (&wrk->clib_time) < end);
3371 vppcom_epoll_wait_eventfd (vcl_worker_t *wrk, struct epoll_event *events,
3372 int maxevents, u32 n_evts, double timeout_ms)
3374 int __clib_unused n_read;
3375 vcl_mq_evt_conn_t *mqc;
3380 if (PREDICT_FALSE (wrk->api_client_handle == ~0))
3382 vcl_api_retry_attach (wrk);
3386 vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
3390 end = clib_time_now (&wrk->clib_time) + (timeout_ms / 1e3);
3395 n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
3396 vec_len (wrk->mq_events), timeout_ms);
3399 VDBG (0, "epoll_wait error %u", errno);
3403 for (i = 0; i < n_mq_evts; i++)
3405 if (PREDICT_FALSE (wrk->mq_events[i].data.u32 == ~0))
3407 /* api socket was closed */
3408 vcl_api_handle_disconnect (wrk);
3412 mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
3413 n_read = read (mqc->mq_fd, &buf, sizeof (buf));
3414 vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0,
3418 if (n_evts || !timeout_ms)
3421 while (end == -1 || clib_time_now (&wrk->clib_time) < end);
3427 vcl_epoll_wait_handle_lt (vcl_worker_t *wrk, struct epoll_event *events,
3428 int maxevents, u32 *n_evts)
3430 u32 add_event = 0, evt_flags = 0, next, *to_remove = 0, *si;
3435 ASSERT (wrk->ep_lt_current != VCL_INVALID_SESSION_INDEX);
3436 if (*n_evts >= maxevents)
3439 next = wrk->ep_lt_current;
3442 s = vcl_session_get (wrk, next);
3443 next = s->vep.lt_next;
3445 if (s->vep.ev.events == 0)
3447 vec_add1 (to_remove, s->session_index);
3450 if ((s->vep.ev.events & EPOLLIN) && (rv = vcl_session_read_ready (s)))
3453 evt_flags |= rv > 0 ? EPOLLIN : EPOLLHUP | EPOLLRDHUP;
3454 evt_data = s->vep.ev.data.u64;
3456 if ((s->vep.ev.events & EPOLLOUT) && (rv = vcl_session_write_ready (s)))
3459 evt_flags |= rv > 0 ? EPOLLOUT : EPOLLHUP | EPOLLRDHUP;
3460 evt_data = s->vep.ev.data.u64;
3462 if (!add_event && s->session_state > VCL_STATE_READY)
3465 evt_flags |= EPOLLHUP | EPOLLRDHUP;
3466 evt_data = s->vep.ev.data.u64;
3470 events[*n_evts].events = evt_flags;
3471 events[*n_evts].data.u64 = evt_data;
3472 if (EPOLLONESHOT & s->vep.ev.events)
3473 s->vep.ev.events = EPOLLHUP | EPOLLERR;
3474 if (evt_flags & EPOLLHUP)
3475 s->vep.ev.events = 0;
3479 if (*n_evts == maxevents)
3481 wrk->ep_lt_current = next;
3487 vec_add1 (to_remove, s->session_index);
3490 while (next != wrk->ep_lt_current);
3492 vec_foreach (si, to_remove)
3494 s = vcl_session_get (wrk, *si);
3495 vcl_epoll_lt_del (wrk, s);
3497 vec_free (to_remove);
3501 vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
3502 int maxevents, double wait_for_time)
3504 vcl_worker_t *wrk = vcl_worker_get_current ();
3505 vcl_session_t *vep_session;
3509 if (PREDICT_FALSE (maxevents <= 0))
3511 VDBG (0, "ERROR: Invalid maxevents (%d)!", maxevents);
3512 return VPPCOM_EINVAL;
3515 vep_session = vcl_session_get_w_handle (wrk, vep_handle);
3517 return VPPCOM_EBADFD;
3519 if (PREDICT_FALSE (!(vep_session->flags & VCL_SESSION_F_IS_VEP)))
3521 VDBG (0, "ERROR: vep_idx (%u) is not a vep!", vep_handle);
3522 return VPPCOM_EINVAL;
3525 if (vec_len (wrk->unhandled_evts_vector))
3527 for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
3529 vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
3531 if (n_evts == maxevents)
3533 vec_delete (wrk->unhandled_evts_vector, i + 1, 0);
3537 vec_reset_length (wrk->unhandled_evts_vector);
3540 if (PREDICT_FALSE (wrk->ep_lt_current != VCL_INVALID_SESSION_INDEX))
3541 vcl_epoll_wait_handle_lt (wrk, events, maxevents, &n_evts);
3543 /* Request to only drain unhandled */
3544 if ((int) wait_for_time == -2)
3548 if (vcm->cfg.use_mq_eventfd)
3549 n_evts = vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
3552 n_evts = vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
3559 vppcom_session_attr (uint32_t session_handle, uint32_t op,
3560 void *buffer, uint32_t * buflen)
3562 vcl_worker_t *wrk = vcl_worker_get_current ();
3563 u32 *flags = buffer;
3564 vppcom_endpt_t *ep = buffer;
3565 transport_endpt_attr_t tea;
3566 vcl_session_t *session;
3569 session = vcl_session_get_w_handle (wrk, session_handle);
3571 return VPPCOM_EBADFD;
3575 case VPPCOM_ATTR_GET_NREAD:
3576 rv = vcl_session_read_ready (session);
3577 VDBG (2, "VPPCOM_ATTR_GET_NREAD: sh %u, nread = %d", session_handle,
3581 case VPPCOM_ATTR_GET_NWRITE:
3582 rv = vcl_session_write_ready (session);
3583 VDBG (2, "VPPCOM_ATTR_GET_NWRITE: sh %u, nwrite = %d", session_handle,
3587 case VPPCOM_ATTR_GET_FLAGS:
3588 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
3592 (vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK) ?
3594 *buflen = sizeof (*flags);
3595 VDBG (2, "VPPCOM_ATTR_GET_FLAGS: sh %u, flags = 0x%08x, "
3596 "is_nonblocking = %u", session_handle, *flags,
3597 vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK));
3603 case VPPCOM_ATTR_SET_FLAGS:
3604 if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
3606 if (*flags & O_NONBLOCK)
3607 vcl_session_set_attr (session, VCL_SESS_ATTR_NONBLOCK);
3609 vcl_session_clear_attr (session, VCL_SESS_ATTR_NONBLOCK);
3611 VDBG (2, "VPPCOM_ATTR_SET_FLAGS: sh %u, flags = 0x%08x,"
3612 " is_nonblocking = %u", session_handle, *flags,
3613 vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK));
3619 case VPPCOM_ATTR_GET_PEER_ADDR:
3620 if (PREDICT_TRUE (buffer && buflen &&
3621 (*buflen >= sizeof (*ep)) && ep->ip))
3623 ep->is_ip4 = session->transport.is_ip4;
3624 ep->port = session->transport.rmt_port;
3625 if (session->transport.is_ip4)
3626 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
3627 sizeof (ip4_address_t));
3629 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
3630 sizeof (ip6_address_t));
3631 *buflen = sizeof (*ep);
3633 "VPPCOM_ATTR_GET_PEER_ADDR: sh %u, is_ip4 = %u, "
3634 "addr = %U, port %u",
3635 session_handle, ep->is_ip4, vcl_format_ip46_address,
3636 &session->transport.rmt_ip,
3637 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3638 clib_net_to_host_u16 (ep->port));
3644 case VPPCOM_ATTR_GET_LCL_ADDR:
3645 if (PREDICT_TRUE (buffer && buflen &&
3646 (*buflen >= sizeof (*ep)) && ep->ip))
3648 ep->is_ip4 = session->transport.is_ip4;
3649 ep->port = session->transport.lcl_port;
3650 if (session->transport.is_ip4)
3651 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
3652 sizeof (ip4_address_t));
3654 clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
3655 sizeof (ip6_address_t));
3656 *buflen = sizeof (*ep);
3658 "VPPCOM_ATTR_GET_LCL_ADDR: sh %u, is_ip4 = %u, addr = %U"
3660 session_handle, ep->is_ip4, vcl_format_ip46_address,
3661 &session->transport.lcl_ip,
3662 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3663 clib_net_to_host_u16 (ep->port));
3669 case VPPCOM_ATTR_GET_ORIGINAL_DST:
3670 if (!session->transport.is_ip4)
3672 /* now original dst only support ipv4*/
3673 rv = VPPCOM_EAFNOSUPPORT;
3676 if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*ep)) &&
3679 ep->is_ip4 = session->transport.is_ip4;
3680 ep->port = session->original_dst_port;
3681 clib_memcpy_fast (ep->ip, &session->original_dst_ip4,
3682 sizeof (ip4_address_t));
3683 *buflen = sizeof (*ep);
3685 "VPPCOM_ATTR_GET_ORIGINAL_DST: sh %u, is_ip4 = %u, addr = %U"
3687 session_handle, ep->is_ip4, vcl_format_ip4_address,
3688 (ip4_address_t *) (&session->original_dst_ip4),
3689 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3690 clib_net_to_host_u16 (ep->port));
3696 case VPPCOM_ATTR_SET_LCL_ADDR:
3697 if (PREDICT_TRUE (buffer && buflen &&
3698 (*buflen >= sizeof (*ep)) && ep->ip))
3700 session->transport.is_ip4 = ep->is_ip4;
3701 session->transport.lcl_port = ep->port;
3702 vcl_ip_copy_from_ep (&session->transport.lcl_ip, ep);
3703 *buflen = sizeof (*ep);
3705 "VPPCOM_ATTR_SET_LCL_ADDR: sh %u, is_ip4 = %u, addr = %U"
3707 session_handle, ep->is_ip4, vcl_format_ip46_address,
3708 &session->transport.lcl_ip,
3709 ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
3710 clib_net_to_host_u16 (ep->port));
3716 case VPPCOM_ATTR_GET_LIBC_EPFD:
3717 rv = session->libc_epfd;
3718 VDBG (2, "VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d", rv);
3721 case VPPCOM_ATTR_SET_LIBC_EPFD:
3722 if (PREDICT_TRUE (buffer && buflen &&
3723 (*buflen == sizeof (session->libc_epfd))))
3725 session->libc_epfd = *(int *) buffer;
3726 *buflen = sizeof (session->libc_epfd);
3728 VDBG (2, "VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, buflen %d",
3729 session->libc_epfd, *buflen);
3735 case VPPCOM_ATTR_GET_PROTOCOL:
3736 if (buffer && buflen && (*buflen >= sizeof (int)))
3738 *(int *) buffer = session->session_type;
3739 *buflen = sizeof (int);
3741 VDBG (2, "VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
3742 *(int *) buffer, *(int *) buffer ? "UDP" : "TCP", *buflen);
3748 case VPPCOM_ATTR_GET_LISTEN:
3749 if (buffer && buflen && (*buflen >= sizeof (int)))
3751 *(int *) buffer = vcl_session_has_attr (session,
3752 VCL_SESS_ATTR_LISTEN);
3753 *buflen = sizeof (int);
3755 VDBG (2, "VPPCOM_ATTR_GET_LISTEN: %d, buflen %d", *(int *) buffer,
3762 case VPPCOM_ATTR_GET_ERROR:
3763 if (buffer && buflen && (*buflen >= sizeof (int)))
3765 *(int *) buffer = 0;
3766 *buflen = sizeof (int);
3768 VDBG (2, "VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
3769 *(int *) buffer, *buflen);
3775 case VPPCOM_ATTR_GET_TX_FIFO_LEN:
3776 if (buffer && buflen && (*buflen >= sizeof (u32)))
3780 *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
3782 svm_fifo_size (session->tx_fifo) :
3783 vcm->cfg.tx_fifo_size);
3784 *buflen = sizeof (u32);
3786 VDBG (2, "VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), buflen %d,"
3787 " #VPP-TBD#", *(size_t *) buffer, *(size_t *) buffer,
3794 case VPPCOM_ATTR_SET_DSCP:
3795 if (buffer && buflen && (*buflen >= sizeof (u8)))
3797 session->dscp = *(u8 *) buffer;
3799 VDBG (2, "VPPCOM_ATTR_SET_DSCP: %u (0x%x), buflen %d,",
3800 *(u8 *) buffer, *(u8 *) buffer, *buflen);
3806 case VPPCOM_ATTR_SET_TX_FIFO_LEN:
3807 if (buffer && buflen && (*buflen == sizeof (u32)))
3810 session->sndbuf_size = *(u32 *) buffer;
3811 VDBG (2, "VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), buflen %d,"
3812 " #VPP-TBD#", session->sndbuf_size, session->sndbuf_size,
3819 case VPPCOM_ATTR_GET_RX_FIFO_LEN:
3820 if (buffer && buflen && (*buflen >= sizeof (u32)))
3824 *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
3826 svm_fifo_size (session->rx_fifo) :
3827 vcm->cfg.rx_fifo_size);
3828 *buflen = sizeof (u32);
3830 VDBG (2, "VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), buflen %d, "
3831 "#VPP-TBD#", *(size_t *) buffer, *(size_t *) buffer, *buflen);
3837 case VPPCOM_ATTR_SET_RX_FIFO_LEN:
3838 if (buffer && buflen && (*buflen == sizeof (u32)))
3841 session->rcvbuf_size = *(u32 *) buffer;
3842 VDBG (2, "VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), buflen %d,"
3843 " #VPP-TBD#", session->sndbuf_size, session->sndbuf_size,
3850 case VPPCOM_ATTR_GET_REUSEADDR:
3851 if (buffer && buflen && (*buflen >= sizeof (int)))
3854 *(int *) buffer = vcl_session_has_attr (session,
3855 VCL_SESS_ATTR_REUSEADDR);
3856 *buflen = sizeof (int);
3858 VDBG (2, "VPPCOM_ATTR_GET_REUSEADDR: %d, buflen %d, #VPP-TBD#",
3859 *(int *) buffer, *buflen);
3865 case VPPCOM_ATTR_SET_REUSEADDR:
3866 if (buffer && buflen && (*buflen == sizeof (int)) &&
3867 !vcl_session_has_attr (session, VCL_SESS_ATTR_LISTEN))
3870 if (*(int *) buffer)
3871 vcl_session_set_attr (session, VCL_SESS_ATTR_REUSEADDR);
3873 vcl_session_clear_attr (session, VCL_SESS_ATTR_REUSEADDR);
3875 VDBG (2, "VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d, #VPP-TBD#",
3876 vcl_session_has_attr (session, VCL_SESS_ATTR_REUSEADDR),
3883 case VPPCOM_ATTR_GET_REUSEPORT:
3884 if (buffer && buflen && (*buflen >= sizeof (int)))
3887 *(int *) buffer = vcl_session_has_attr (session,
3888 VCL_SESS_ATTR_REUSEPORT);
3889 *buflen = sizeof (int);
3891 VDBG (2, "VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d, #VPP-TBD#",
3892 *(int *) buffer, *buflen);
3898 case VPPCOM_ATTR_SET_REUSEPORT:
3899 if (buffer && buflen && (*buflen == sizeof (int)) &&
3900 !vcl_session_has_attr (session, VCL_SESS_ATTR_LISTEN))
3903 if (*(int *) buffer)
3904 vcl_session_set_attr (session, VCL_SESS_ATTR_REUSEPORT);
3906 vcl_session_clear_attr (session, VCL_SESS_ATTR_REUSEPORT);
3908 VDBG (2, "VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d, #VPP-TBD#",
3909 vcl_session_has_attr (session, VCL_SESS_ATTR_REUSEPORT),
3916 case VPPCOM_ATTR_GET_BROADCAST:
3917 if (buffer && buflen && (*buflen >= sizeof (int)))
3920 *(int *) buffer = vcl_session_has_attr (session,
3921 VCL_SESS_ATTR_BROADCAST);
3922 *buflen = sizeof (int);
3924 VDBG (2, "VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d, #VPP-TBD#",
3925 *(int *) buffer, *buflen);
3931 case VPPCOM_ATTR_SET_BROADCAST:
3932 if (buffer && buflen && (*buflen == sizeof (int)))
3935 if (*(int *) buffer)
3936 vcl_session_set_attr (session, VCL_SESS_ATTR_BROADCAST);
3938 vcl_session_clear_attr (session, VCL_SESS_ATTR_BROADCAST);
3940 VDBG (2, "VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, #VPP-TBD#",
3941 vcl_session_has_attr (session, VCL_SESS_ATTR_BROADCAST),
3948 case VPPCOM_ATTR_GET_V6ONLY:
3949 if (buffer && buflen && (*buflen >= sizeof (int)))
3952 *(int *) buffer = vcl_session_has_attr (session,
3953 VCL_SESS_ATTR_V6ONLY);
3954 *buflen = sizeof (int);
3956 VDBG (2, "VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, #VPP-TBD#",
3957 *(int *) buffer, *buflen);
3963 case VPPCOM_ATTR_SET_V6ONLY:
3964 if (buffer && buflen && (*buflen == sizeof (int)))
3967 if (*(int *) buffer)
3968 vcl_session_set_attr (session, VCL_SESS_ATTR_V6ONLY);
3970 vcl_session_clear_attr (session, VCL_SESS_ATTR_V6ONLY);
3972 VDBG (2, "VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, #VPP-TBD#",
3973 vcl_session_has_attr (session, VCL_SESS_ATTR_V6ONLY),
3980 case VPPCOM_ATTR_GET_KEEPALIVE:
3981 if (buffer && buflen && (*buflen >= sizeof (int)))
3984 *(int *) buffer = vcl_session_has_attr (session,
3985 VCL_SESS_ATTR_KEEPALIVE);
3986 *buflen = sizeof (int);
3988 VDBG (2, "VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, #VPP-TBD#",
3989 *(int *) buffer, *buflen);
3995 case VPPCOM_ATTR_SET_KEEPALIVE:
3996 if (buffer && buflen && (*buflen == sizeof (int)))
3999 if (*(int *) buffer)
4000 vcl_session_set_attr (session, VCL_SESS_ATTR_KEEPALIVE);
4002 vcl_session_clear_attr (session, VCL_SESS_ATTR_KEEPALIVE);
4004 VDBG (2, "VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, #VPP-TBD#",
4005 vcl_session_has_attr (session, VCL_SESS_ATTR_KEEPALIVE),
4012 case VPPCOM_ATTR_GET_TCP_NODELAY:
4013 if (buffer && buflen && (*buflen >= sizeof (int)))
4016 *(int *) buffer = vcl_session_has_attr (session,
4017 VCL_SESS_ATTR_TCP_NODELAY);
4018 *buflen = sizeof (int);
4020 VDBG (2, "VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#",
4021 *(int *) buffer, *buflen);
4027 case VPPCOM_ATTR_SET_TCP_NODELAY:
4028 if (buffer && buflen && (*buflen == sizeof (int)))
4031 if (*(int *) buffer)
4032 vcl_session_set_attr (session, VCL_SESS_ATTR_TCP_NODELAY);
4034 vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_NODELAY);
4036 VDBG (2, "VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#",
4037 vcl_session_has_attr (session, VCL_SESS_ATTR_TCP_NODELAY),
4044 case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
4045 if (buffer && buflen && (*buflen >= sizeof (int)))
4048 *(int *) buffer = vcl_session_has_attr (session,
4049 VCL_SESS_ATTR_TCP_KEEPIDLE);
4050 *buflen = sizeof (int);
4052 VDBG (2, "VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#",
4053 *(int *) buffer, *buflen);
4059 case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
4060 if (buffer && buflen && (*buflen == sizeof (int)))
4063 if (*(int *) buffer)
4064 vcl_session_set_attr (session, VCL_SESS_ATTR_TCP_KEEPIDLE);
4066 vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_KEEPIDLE);
4068 VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#",
4069 vcl_session_has_attr (session,
4070 VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
4076 case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
4077 if (buffer && buflen && (*buflen >= sizeof (int)))
4080 *(int *) buffer = vcl_session_has_attr (session,
4081 VCL_SESS_ATTR_TCP_KEEPINTVL);
4082 *buflen = sizeof (int);
4084 VDBG (2, "VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#",
4085 *(int *) buffer, *buflen);
4091 case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
4092 if (buffer && buflen && (*buflen == sizeof (int)))
4095 if (*(int *) buffer)
4096 vcl_session_set_attr (session, VCL_SESS_ATTR_TCP_KEEPINTVL);
4098 vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_KEEPINTVL);
4100 VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#",
4101 vcl_session_has_attr (session,
4102 VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
4108 case VPPCOM_ATTR_GET_TCP_USER_MSS:
4109 if (!(buffer && buflen && (*buflen >= sizeof (u32))))
4115 tea.type = TRANSPORT_ENDPT_ATTR_MSS;
4116 tea.mss = *(u32 *) buffer;
4117 if (vcl_session_transport_attr (wrk, session, 1 /* is_get */, &tea))
4118 rv = VPPCOM_ENOPROTOOPT;
4122 *(u32 *) buffer = tea.mss;
4123 *buflen = sizeof (int);
4126 VDBG (2, "VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d", *(int *) buffer,
4129 case VPPCOM_ATTR_SET_TCP_USER_MSS:
4130 if (!(buffer && buflen && (*buflen == sizeof (u32))))
4136 tea.type = TRANSPORT_ENDPT_ATTR_MSS;
4137 tea.mss = *(u32 *) buffer;
4138 if (vcl_session_transport_attr (wrk, session, 0 /* is_get */, &tea))
4139 rv = VPPCOM_ENOPROTOOPT;
4141 VDBG (2, "VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d", tea.mss,
4145 case VPPCOM_ATTR_SET_CONNECTED:
4146 session->flags |= VCL_SESSION_F_CONNECTED;
4149 case VPPCOM_ATTR_SET_CKPAIR:
4150 if (!(buffer && buflen && (*buflen == sizeof (int))) ||
4151 !vcl_session_has_crypto (session))
4156 if (!session->ext_config)
4158 vcl_session_alloc_ext_cfg (session, TRANSPORT_ENDPT_EXT_CFG_CRYPTO,
4159 sizeof (transport_endpt_ext_cfg_t));
4161 else if (session->ext_config->type != TRANSPORT_ENDPT_EXT_CFG_CRYPTO)
4167 session->ext_config->crypto.ckpair_index = *(uint32_t *) buffer;
4170 case VPPCOM_ATTR_SET_VRF:
4171 if (!(buffer && buflen && (*buflen == sizeof (u32))))
4176 session->vrf = *(u32 *) buffer;
4179 case VPPCOM_ATTR_GET_VRF:
4180 if (!(buffer && buflen && (*buflen >= sizeof (u32))))
4185 *(u32 *) buffer = session->vrf;
4186 *buflen = sizeof (u32);
4189 case VPPCOM_ATTR_GET_DOMAIN:
4190 if (!(buffer && buflen && (*buflen >= sizeof (int))))
4196 if (session->transport.is_ip4)
4197 *(int *) buffer = AF_INET;
4199 *(int *) buffer = AF_INET6;
4200 *buflen = sizeof (int);
4202 VDBG (2, "VPPCOM_ATTR_GET_DOMAIN: %d, buflen %u", *(int *) buffer,
4206 case VPPCOM_ATTR_SET_ENDPT_EXT_CFG:
4207 if (!(buffer && buflen && (*buflen > 0)))
4212 if (session->ext_config)
4217 vcl_session_alloc_ext_cfg (session, TRANSPORT_ENDPT_EXT_CFG_NONE,
4218 *buflen + sizeof (u32));
4219 clib_memcpy (session->ext_config->data, buffer, *buflen);
4220 session->ext_config->len = *buflen;
4222 case VPPCOM_ATTR_SET_IP_PKTINFO:
4223 if (buffer && buflen && (*buflen == sizeof (int)) &&
4224 !vcl_session_has_attr (session, VCL_SESS_ATTR_IP_PKTINFO))
4226 if (*(int *) buffer)
4227 vcl_session_set_attr (session, VCL_SESS_ATTR_IP_PKTINFO);
4229 vcl_session_clear_attr (session, VCL_SESS_ATTR_IP_PKTINFO);
4231 VDBG (2, "VCL_SESS_ATTR_IP_PKTINFO: %d, buflen %d",
4232 vcl_session_has_attr (session, VCL_SESS_ATTR_IP_PKTINFO),
4239 case VPPCOM_ATTR_GET_IP_PKTINFO:
4240 if (buffer && buflen && (*buflen >= sizeof (int)))
4243 vcl_session_has_attr (session, VCL_SESS_ATTR_IP_PKTINFO);
4244 *buflen = sizeof (int);
4246 VDBG (2, "VCL_SESS_ATTR_IP_PKTINFO: %d, buflen %d", *(int *) buffer,
4262 vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
4263 uint32_t buflen, int flags, vppcom_endpt_t * ep)
4265 vcl_worker_t *wrk = vcl_worker_get_current ();
4266 vcl_session_t *session;
4270 rv = vppcom_session_read (session_handle, buffer, buflen);
4271 else if (flags & MSG_PEEK)
4272 rv = vppcom_session_peek (session_handle, buffer, buflen);
4275 VDBG (0, "Unsupport flags for recvfrom %d", flags);
4276 return VPPCOM_EAFNOSUPPORT;
4281 session = vcl_session_get_w_handle (wrk, session_handle);
4282 if (session->transport.is_ip4)
4283 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
4284 sizeof (ip4_address_t));
4286 clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
4287 sizeof (ip6_address_t));
4288 ep->is_ip4 = session->transport.is_ip4;
4289 ep->port = session->transport.rmt_port;
4296 vcl_handle_ep_app_tlvs (vcl_session_t *s, vppcom_endpt_t *ep)
4298 vppcom_endpt_tlv_t *tlv = ep->app_tlvs;
4302 switch (tlv->data_type)
4304 case VCL_UDP_SEGMENT:
4305 s->gso_size = *(u16 *) tlv->data;
4307 case VCL_IP_PKTINFO:
4308 clib_memcpy_fast (&s->transport.lcl_ip, (ip4_address_t *) tlv->data,
4309 sizeof (ip4_address_t));
4312 VDBG (0, "Ignorning unsupported app tlv %u", tlv->data_type);
4315 tlv = VCL_EP_NEXT_APP_TLV (ep, tlv);
4321 vppcom_session_sendto (uint32_t session_handle, void *buffer,
4322 uint32_t buflen, int flags, vppcom_endpt_t * ep)
4324 vcl_worker_t *wrk = vcl_worker_get_current ();
4327 s = vcl_session_get_w_handle (wrk, session_handle);
4328 if (PREDICT_FALSE (!s))
4329 return VPPCOM_EBADFD;
4333 if (!vcl_session_is_cl (s))
4334 return VPPCOM_EINVAL;
4336 s->transport.is_ip4 = ep->is_ip4;
4337 s->transport.rmt_port = ep->port;
4338 vcl_ip_copy_from_ep (&s->transport.rmt_ip, ep);
4341 vcl_handle_ep_app_tlvs (s, ep);
4343 /* Session not connected/bound in vpp. Create it by 'connecting' it */
4344 if (PREDICT_FALSE (s->session_state == VCL_STATE_CLOSED))
4346 u32 session_index = s->session_index;
4347 f64 timeout = vcm->cfg.session_timeout;
4350 vcl_send_session_connect (wrk, s);
4351 rv = vppcom_wait_for_session_state_change (session_index,
4356 s = vcl_session_get (wrk, session_index);
4362 // TBD check the flags and do the right thing
4363 VDBG (2, "handling flags 0x%u (%d) not implemented yet.", flags, flags);
4366 return (vppcom_session_write_inline (wrk, s, buffer, buflen, 1,
4367 s->is_dgram ? 1 : 0));
4371 vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
4373 vcl_worker_t *wrk = vcl_worker_get_current ();
4374 f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
4375 u32 i, keep_trying = 1;
4376 svm_msg_q_msg_t msg;
4380 VDBG (3, "vp %p, nsids %u, wait_for_time %f", vp, n_sids, wait_for_time);
4383 return VPPCOM_EFAULT;
4387 vcl_session_t *session;
4389 /* Dequeue all events and drop all unhandled io events */
4390 while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
4392 e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
4393 vcl_handle_mq_event (wrk, e);
4394 svm_msg_q_free_msg (wrk->app_event_queue, &msg);
4396 vec_reset_length (wrk->unhandled_evts_vector);
4398 for (i = 0; i < n_sids; i++)
4400 session = vcl_session_get (wrk, vp[i].sh);
4403 vp[i].revents = POLLHUP;
4410 if (POLLIN & vp[i].events)
4412 rv = vcl_session_read_ready (session);
4415 vp[i].revents |= POLLIN;
4422 case VPPCOM_ECONNRESET:
4423 vp[i].revents = POLLHUP;
4427 vp[i].revents = POLLERR;
4434 if (POLLOUT & vp[i].events)
4436 rv = vcl_session_write_ready (session);
4439 vp[i].revents |= POLLOUT;
4446 case VPPCOM_ECONNRESET:
4447 vp[i].revents = POLLHUP;
4451 vp[i].revents = POLLERR;
4458 if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
4460 vp[i].revents = POLLNVAL;
4464 if (wait_for_time != -1)
4465 keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
4467 while ((num_ev == 0) && keep_trying);
4473 vppcom_mq_epoll_fd (void)
4475 vcl_worker_t *wrk = vcl_worker_get_current ();
4476 return wrk->mqs_epfd;
4480 vppcom_session_index (vcl_session_handle_t session_handle)
4482 return session_handle & 0xFFFFFF;
4486 vppcom_session_worker (vcl_session_handle_t session_handle)
4488 return session_handle >> 24;
4492 vppcom_worker_register (void)
4494 if (!vcl_worker_alloc_and_init ())
4495 return VPPCOM_EEXIST;
4497 if (vcl_worker_register_with_vpp ())
4498 return VPPCOM_EEXIST;
4504 vppcom_worker_unregister (void)
4506 vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
4507 vcl_set_worker_index (~0);
4511 vppcom_worker_index_set (int index)
4513 vcl_set_worker_index (index);
4517 vppcom_worker_index (void)
4519 return vcl_get_worker_index ();
4523 vppcom_worker_mqs_epfd (void)
4525 vcl_worker_t *wrk = vcl_worker_get_current ();
4526 if (!vcm->cfg.use_mq_eventfd)
4528 return wrk->mqs_epfd;
4532 vppcom_session_is_connectable_listener (uint32_t session_handle)
4534 vcl_session_t *session;
4535 vcl_worker_t *wrk = vcl_worker_get_current ();
4536 session = vcl_session_get_w_handle (wrk, session_handle);
4538 return VPPCOM_EBADFD;
4539 return vcl_session_is_connectable_listener (wrk, session);
4543 vppcom_session_listener (uint32_t session_handle)
4545 vcl_worker_t *wrk = vcl_worker_get_current ();
4546 vcl_session_t *listen_session, *session;
4547 session = vcl_session_get_w_handle (wrk, session_handle);
4549 return VPPCOM_EBADFD;
4550 if (session->listener_index == VCL_INVALID_SESSION_INDEX)
4551 return VPPCOM_EBADFD;
4552 listen_session = vcl_session_get_w_handle (wrk, session->listener_index);
4553 if (!listen_session)
4554 return VPPCOM_EBADFD;
4555 return vcl_session_handle (listen_session);
4559 vppcom_session_n_accepted (uint32_t session_handle)
4561 vcl_worker_t *wrk = vcl_worker_get_current ();
4562 vcl_session_t *session = vcl_session_get_w_handle (wrk, session_handle);
4564 return VPPCOM_EBADFD;
4565 return session->n_accepted_sessions;
4569 vppcom_proto_str (vppcom_proto_t proto)
4571 char const *proto_str;
4575 case VPPCOM_PROTO_TCP:
4578 case VPPCOM_PROTO_UDP:
4581 case VPPCOM_PROTO_TLS:
4584 case VPPCOM_PROTO_QUIC:
4587 case VPPCOM_PROTO_DTLS:
4590 case VPPCOM_PROTO_SRTP:
4594 proto_str = "UNKNOWN";
4601 vppcom_retval_str (int retval)
4612 st = "VPPCOM_EAGAIN";
4616 st = "VPPCOM_EFAULT";
4620 st = "VPPCOM_ENOMEM";
4624 st = "VPPCOM_EINVAL";
4628 st = "VPPCOM_EBADFD";
4631 case VPPCOM_EAFNOSUPPORT:
4632 st = "VPPCOM_EAFNOSUPPORT";
4635 case VPPCOM_ECONNABORTED:
4636 st = "VPPCOM_ECONNABORTED";
4639 case VPPCOM_ECONNRESET:
4640 st = "VPPCOM_ECONNRESET";
4643 case VPPCOM_ENOTCONN:
4644 st = "VPPCOM_ENOTCONN";
4647 case VPPCOM_ECONNREFUSED:
4648 st = "VPPCOM_ECONNREFUSED";
4651 case VPPCOM_ETIMEDOUT:
4652 st = "VPPCOM_ETIMEDOUT";
4655 case VPPCOM_EADDRINUSE:
4656 st = "VPPCOM_EADDRINUSE";
4660 st = "UNKNOWN_STATE";
4668 vppcom_add_cert_key_pair (vppcom_cert_key_pair_t *ckpair)
4670 if (vcm->cfg.vpp_app_socket_api)
4671 return vcl_sapi_add_cert_key_pair (ckpair);
4673 return vcl_bapi_add_cert_key_pair (ckpair);
4677 vppcom_del_cert_key_pair (uint32_t ckpair_index)
4679 if (vcm->cfg.vpp_app_socket_api)
4680 return vcl_sapi_del_cert_key_pair (ckpair_index);
4682 return vcl_bapi_del_cert_key_pair (ckpair_index);
4686 vppcom_session_get_error (uint32_t session_handle)
4688 vcl_worker_t *wrk = vcl_worker_get_current ();
4689 vcl_session_t *session = 0;
4691 session = vcl_session_get_w_handle (wrk, session_handle);
4693 return VPPCOM_EBADFD;
4695 if (PREDICT_FALSE (session->flags & VCL_SESSION_F_IS_VEP))
4697 VWRN ("epoll session %u! will not have connect", session->session_index);
4698 return VPPCOM_EBADFD;
4701 if (session->vpp_error == SESSION_E_PORTINUSE)
4702 return VPPCOM_EADDRINUSE;
4703 else if (session->vpp_error == SESSION_E_REFUSED)
4704 return VPPCOM_ECONNREFUSED;
4705 else if (session->vpp_error != SESSION_E_NONE)
4706 return VPPCOM_EFAULT;
4712 vppcom_worker_is_detached (void)
4714 vcl_worker_t *wrk = vcl_worker_get_current ();
4716 if (!vcm->cfg.use_mq_eventfd)
4717 return VPPCOM_ENOTSUP;
4719 return wrk->api_client_handle == ~0;
4723 * fd.io coding-style-patch-verification: ON
4726 * eval: (c-set-style "gnu")