2 * builtin_client.c - vpp built-in tcp client/connect code
4 * Copyright (c) 2017 by Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vnet/vnet.h>
19 #include <vnet/plugin/plugin.h>
20 #include <vnet/tcp/builtin_client.h>
22 #include <vlibapi/api.h>
23 #include <vlibmemory/api.h>
24 #include <vpp/app/version.h>
26 #define TCP_BUILTIN_CLIENT_DBG (0)
29 signal_evt_to_cli_i (int *code)
31 tclient_main_t *tm = &tclient_main;
32 ASSERT (vlib_get_thread_index () == 0);
33 vlib_process_signal_event (tm->vlib_main, tm->cli_node_index, *code, 0);
37 signal_evt_to_cli (int code)
39 if (vlib_get_thread_index () != 0)
40 vl_api_rpc_call_main_thread (signal_evt_to_cli_i, (u8 *) & code,
43 signal_evt_to_cli_i (&code);
47 send_test_chunk (tclient_main_t * tm, session_t * s)
49 u8 *test_data = tm->connect_test_data;
52 session_fifo_event_t evt;
53 static int serial_number = 0;
57 ASSERT (vec_len (test_data) > 0);
59 test_buf_offset = s->bytes_sent % vec_len (test_data);
60 bytes_this_chunk = vec_len (test_data) - test_buf_offset;
62 bytes_this_chunk = bytes_this_chunk < s->bytes_to_send
63 ? bytes_this_chunk : s->bytes_to_send;
65 txf = s->server_tx_fifo;
66 rv = svm_fifo_enqueue_nowait (txf, bytes_this_chunk,
67 test_data + test_buf_offset);
69 /* If we managed to enqueue data... */
72 /* Account for it... */
73 s->bytes_to_send -= rv;
76 if (TCP_BUILTIN_CLIENT_DBG)
79 ELOG_TYPE_DECLARE (e) =
81 .format = "tx-enq: xfer %d bytes, sent %u remain %u",
82 .format_args = "i4i4i4",
89 ed = ELOG_DATA (&vlib_global_main.elog_main, e);
91 ed->data[1] = s->bytes_sent;
92 ed->data[2] = s->bytes_to_send;
95 /* Poke the session layer */
96 if (svm_fifo_set_event (txf))
98 /* Fabricate TX event, send to vpp */
100 evt.event_type = FIFO_EVENT_APP_TX;
101 evt.event_id = serial_number++;
103 if (unix_shared_memory_queue_add
104 (tm->vpp_event_queue[txf->master_thread_index], (u8 *) & evt,
105 0 /* do wait for mutex */ ))
106 clib_warning ("could not enqueue event");
112 receive_test_chunk (tclient_main_t * tm, session_t * s)
114 svm_fifo_t *rx_fifo = s->server_rx_fifo;
115 int n_read, test_bytes = 0;
116 u32 my_thread_index = vlib_get_thread_index ();
118 /* Allow enqueuing of new event */
119 // svm_fifo_unset_event (rx_fifo);
123 n_read = svm_fifo_dequeue_nowait (rx_fifo,
124 vec_len (tm->rx_buf[my_thread_index]),
125 tm->rx_buf[my_thread_index]);
129 n_read = svm_fifo_max_dequeue (rx_fifo);
130 svm_fifo_dequeue_drop (rx_fifo, n_read);
135 if (TCP_BUILTIN_CLIENT_DBG)
138 ELOG_TYPE_DECLARE (e) =
140 .format = "rx-deq: %d bytes",
148 ed = ELOG_DATA (&vlib_global_main.elog_main, e);
149 ed->data[0] = n_read;
155 for (i = 0; i < n_read; i++)
157 if (tm->rx_buf[my_thread_index][i]
158 != ((s->bytes_received + i) & 0xff))
160 clib_warning ("read %d error at byte %lld, 0x%x not 0x%x",
161 n_read, s->bytes_received + i,
162 tm->rx_buf[my_thread_index][i],
163 ((s->bytes_received + i) & 0xff));
167 s->bytes_to_receive -= n_read;
168 s->bytes_received += n_read;
173 builtin_client_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
174 vlib_frame_t * frame)
176 tclient_main_t *tm = &tclient_main;
177 int my_thread_index = vlib_get_thread_index ();
181 u32 *connection_indices;
182 u32 *connections_this_batch;
183 u32 nconnections_this_batch;
185 connection_indices = tm->connection_index_by_thread[my_thread_index];
186 connections_this_batch =
187 tm->connections_this_batch_by_thread[my_thread_index];
189 if ((tm->run_test == 0) ||
190 ((vec_len (connection_indices) == 0)
191 && vec_len (connections_this_batch) == 0))
194 /* Grab another pile of connections */
195 if (PREDICT_FALSE (vec_len (connections_this_batch) == 0))
197 nconnections_this_batch =
198 clib_min (tm->connections_per_batch, vec_len (connection_indices));
200 ASSERT (nconnections_this_batch > 0);
201 vec_validate (connections_this_batch, nconnections_this_batch - 1);
202 clib_memcpy (connections_this_batch,
203 connection_indices + vec_len (connection_indices)
204 - nconnections_this_batch,
205 nconnections_this_batch * sizeof (u32));
206 _vec_len (connection_indices) -= nconnections_this_batch;
209 if (PREDICT_FALSE (tm->prev_conns != tm->connections_per_batch
210 && tm->prev_conns == vec_len (connections_this_batch)))
213 tm->prev_conns = vec_len (connections_this_batch);
214 if (tm->repeats == 500000)
216 clib_warning ("stuck clients");
221 tm->prev_conns = vec_len (connections_this_batch);
225 for (i = 0; i < vec_len (connections_this_batch); i++)
229 sp = pool_elt_at_index (tm->sessions, connections_this_batch[i]);
231 if (sp->bytes_to_send > 0)
233 send_test_chunk (tm, sp);
236 if (sp->bytes_to_receive > 0)
238 receive_test_chunk (tm, sp);
241 if (PREDICT_FALSE (delete_session == 1))
243 u32 index, thread_index;
246 __sync_fetch_and_add (&tm->tx_total, sp->bytes_sent);
247 __sync_fetch_and_add (&tm->rx_total, sp->bytes_received);
249 stream_session_parse_handle (sp->vpp_session_handle,
250 &index, &thread_index);
251 s = stream_session_get_if_valid (index, thread_index);
255 vnet_disconnect_args_t _a, *a = &_a;
256 a->handle = stream_session_handle (s);
257 a->app_index = tm->app_index;
258 vnet_disconnect_session (a);
260 vec_delete (connections_this_batch, 1, i);
262 __sync_fetch_and_add (&tm->ready_connections, -1);
265 clib_warning ("session AWOL?");
267 /* Kick the debug CLI process */
268 if (tm->ready_connections == 0)
270 signal_evt_to_cli (2);
275 tm->connection_index_by_thread[my_thread_index] = connection_indices;
276 tm->connections_this_batch_by_thread[my_thread_index] =
277 connections_this_batch;
282 VLIB_REGISTER_NODE (builtin_client_node) =
284 .function = builtin_client_node_fn,
285 .name = "builtin-tcp-client",
286 .type = VLIB_NODE_TYPE_INPUT,
287 .state = VLIB_NODE_STATE_DISABLED,
292 create_api_loopback (tclient_main_t * tm)
294 api_main_t *am = &api_main;
295 vl_shmem_hdr_t *shmem_hdr;
297 shmem_hdr = am->shmem_hdr;
298 tm->vl_input_queue = shmem_hdr->vl_input_queue;
299 tm->my_client_index =
300 vl_api_memclnt_create_internal ("tcp_test_client", tm->vl_input_queue);
305 tcp_test_clients_init (vlib_main_t * vm)
307 tclient_main_t *tm = &tclient_main;
308 vlib_thread_main_t *vtm = vlib_get_thread_main ();
312 if (create_api_loopback (tm))
315 num_threads = 1 /* main thread */ + vtm->n_threads;
317 /* Init test data. Big buffer */
318 vec_validate (tm->connect_test_data, 1024 * 1024 - 1);
319 for (i = 0; i < vec_len (tm->connect_test_data); i++)
320 tm->connect_test_data[i] = i & 0xff;
322 vec_validate (tm->rx_buf, num_threads - 1);
323 for (i = 0; i < num_threads; i++)
324 vec_validate (tm->rx_buf[i], vec_len (tm->connect_test_data) - 1);
328 vec_validate (tm->connection_index_by_thread, vtm->n_vlib_mains);
329 vec_validate (tm->connections_this_batch_by_thread, vtm->n_vlib_mains);
330 vec_validate (tm->vpp_event_queue, vtm->n_vlib_mains);
336 builtin_session_connected_callback (u32 app_index, u32 api_context,
337 stream_session_t * s, u8 is_fail)
339 tclient_main_t *tm = &tclient_main;
342 u8 thread_index = vlib_get_thread_index ();
346 clib_warning ("connection %d failed!", api_context);
347 signal_evt_to_cli (-1);
351 ASSERT (s->thread_index == thread_index);
353 if (!tm->vpp_event_queue[thread_index])
354 tm->vpp_event_queue[thread_index] =
355 session_manager_get_vpp_event_queue (thread_index);
360 clib_spinlock_lock_if_init (&tm->sessions_lock);
361 pool_get (tm->sessions, session);
362 clib_spinlock_unlock_if_init (&tm->sessions_lock);
364 memset (session, 0, sizeof (*session));
365 session_index = session - tm->sessions;
366 session->bytes_to_send = tm->bytes_to_send;
367 session->bytes_to_receive = tm->no_return ? 0ULL : tm->bytes_to_send;
368 session->server_rx_fifo = s->server_rx_fifo;
369 session->server_rx_fifo->client_session_index = session_index;
370 session->server_tx_fifo = s->server_tx_fifo;
371 session->server_tx_fifo->client_session_index = session_index;
372 session->vpp_session_handle = stream_session_handle (s);
374 vec_add1 (tm->connection_index_by_thread[thread_index], session_index);
375 __sync_fetch_and_add (&tm->ready_connections, 1);
376 if (tm->ready_connections == tm->expected_connections)
379 /* Signal the CLI process that the action is starting... */
380 signal_evt_to_cli (1);
387 builtin_session_reset_callback (stream_session_t * s)
389 if (s->session_state == SESSION_STATE_READY)
390 clib_warning ("Reset active connection %U", format_stream_session, s, 2);
391 stream_session_cleanup (s);
396 builtin_session_create_callback (stream_session_t * s)
402 builtin_session_disconnect_callback (stream_session_t * s)
404 tclient_main_t *tm = &tclient_main;
405 vnet_disconnect_args_t _a, *a = &_a;
406 a->handle = stream_session_handle (s);
407 a->app_index = tm->app_index;
408 vnet_disconnect_session (a);
413 builtin_server_rx_callback (stream_session_t * s)
419 static session_cb_vft_t builtin_clients = {
420 .session_reset_callback = builtin_session_reset_callback,
421 .session_connected_callback = builtin_session_connected_callback,
422 .session_accept_callback = builtin_session_create_callback,
423 .session_disconnect_callback = builtin_session_disconnect_callback,
424 .builtin_server_rx_callback = builtin_server_rx_callback
429 attach_builtin_test_clients_app (void)
431 tclient_main_t *tm = &tclient_main;
432 vnet_app_attach_args_t _a, *a = &_a;
433 u8 segment_name[128];
434 u32 segment_name_length, prealloc_fifos;
437 segment_name_length = ARRAY_LEN (segment_name);
439 memset (a, 0, sizeof (*a));
440 memset (options, 0, sizeof (options));
442 a->api_client_index = tm->my_client_index;
443 a->segment_name = segment_name;
444 a->segment_name_length = segment_name_length;
445 a->session_cb_vft = &builtin_clients;
447 prealloc_fifos = tm->prealloc_fifos ? tm->expected_connections : 1;
449 options[SESSION_OPTIONS_ACCEPT_COOKIE] = 0x12345678;
450 options[SESSION_OPTIONS_SEGMENT_SIZE] = (2ULL << 32);
451 options[SESSION_OPTIONS_RX_FIFO_SIZE] = tm->fifo_size;
452 options[SESSION_OPTIONS_TX_FIFO_SIZE] = tm->fifo_size;
453 options[APP_OPTIONS_PRIVATE_SEGMENT_COUNT] = tm->private_segment_count;
454 options[APP_OPTIONS_PRIVATE_SEGMENT_SIZE] = tm->private_segment_size;
455 options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = prealloc_fifos;
457 options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_BUILTIN_APP;
459 a->options = options;
461 if (vnet_application_attach (a))
464 tm->app_index = a->app_index;
469 tclient_thread_fn (void *arg)
474 /** Start a transmit thread */
476 start_tx_pthread (tclient_main_t * tm)
478 if (tm->client_thread_handle == 0)
480 int rv = pthread_create (&tm->client_thread_handle,
482 tclient_thread_fn, 0);
485 tm->client_thread_handle = 0;
493 clients_connect (vlib_main_t * vm, u8 * uri, u32 n_clients)
495 tclient_main_t *tm = &tclient_main;
496 vnet_connect_args_t _a, *a = &_a;
498 for (i = 0; i < n_clients; i++)
500 memset (a, 0, sizeof (*a));
502 a->uri = (char *) uri;
504 a->app_index = tm->app_index;
506 vnet_connect_uri (a);
508 /* Crude pacing for call setups */
510 vlib_process_suspend (vm, 10e-6);
511 ASSERT (i + 1 >= tm->ready_connections);
512 while (i + 1 - tm->ready_connections > 1000)
514 vlib_process_suspend (vm, 100e-6);
519 static clib_error_t *
520 test_tcp_clients_command_fn (vlib_main_t * vm,
521 unformat_input_t * input,
522 vlib_cli_command_t * cmd)
524 tclient_main_t *tm = &tclient_main;
525 vlib_thread_main_t *thread_main = vlib_get_thread_main ();
526 uword *event_data = 0, event_type;
527 u8 *default_connect_uri = (u8 *) "tcp://6.0.1.1/1234", *uri;
528 u64 tmp, total_bytes;
529 f64 test_timeout = 20.0, syn_timeout = 20.0, delta;
530 f64 time_before_connects;
532 int preallocate_sessions = 0;
536 tm->bytes_to_send = 8192;
538 tm->fifo_size = 64 << 10;
539 tm->connections_per_batch = 1000;
540 tm->private_segment_count = 0;
541 tm->private_segment_size = 0;
543 if (thread_main->n_vlib_mains > 1)
544 clib_spinlock_init (&tm->sessions_lock);
545 vec_free (tm->connect_uri);
547 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
549 if (unformat (input, "nclients %d", &n_clients))
551 else if (unformat (input, "mbytes %lld", &tmp))
552 tm->bytes_to_send = tmp << 20;
553 else if (unformat (input, "gbytes %lld", &tmp))
554 tm->bytes_to_send = tmp << 30;
555 else if (unformat (input, "bytes %lld", &tm->bytes_to_send))
557 else if (unformat (input, "uri %s", &tm->connect_uri))
559 else if (unformat (input, "test-timeout %f", &test_timeout))
561 else if (unformat (input, "syn-timeout %f", &syn_timeout))
563 else if (unformat (input, "no-return"))
565 else if (unformat (input, "fifo-size %d", &tm->fifo_size))
566 tm->fifo_size <<= 10;
567 else if (unformat (input, "private-segment-count %d",
568 &tm->private_segment_count))
570 else if (unformat (input, "private-segment-size %U",
571 unformat_memory_size, &tmp))
573 if (tmp >= 0x100000000ULL)
574 return clib_error_return
575 (0, "private segment size %lld (%llu) too large", tmp, tmp);
576 tm->private_segment_size = tmp;
578 else if (unformat (input, "preallocate-fifos"))
579 tm->prealloc_fifos = 1;
580 else if (unformat (input, "preallocate-sessions"))
581 preallocate_sessions = 1;
583 if (unformat (input, "client-batch %d", &tm->connections_per_batch))
586 return clib_error_return (0, "unknown input `%U'",
587 format_unformat_error, input);
590 /* Store cli process node index for signalling */
591 tm->cli_node_index = vlib_get_current_process (vm)->node_runtime.node_index;
593 if (tm->is_init == 0)
595 if (tcp_test_clients_init (vm))
596 return clib_error_return (0, "failed init");
600 tm->ready_connections = 0;
601 tm->expected_connections = n_clients;
605 uri = default_connect_uri;
607 uri = tm->connect_uri;
609 #if TCP_BUILTIN_CLIENT_PTHREAD
613 vlib_worker_thread_barrier_sync (vm);
614 vnet_session_enable_disable (vm, 1 /* turn on TCP, etc. */ );
615 vlib_worker_thread_barrier_release (vm);
617 if (tm->test_client_attached == 0)
619 if (attach_builtin_test_clients_app ())
621 return clib_error_return (0, "app attach failed");
624 tm->test_client_attached = 1;
626 /* Turn on the builtin client input nodes */
627 for (i = 0; i < thread_main->n_vlib_mains; i++)
628 vlib_node_set_state (vlib_mains[i], builtin_client_node.index,
629 VLIB_NODE_STATE_POLLING);
631 if (preallocate_sessions)
633 session_t *sp __attribute__ ((unused));
634 for (i = 0; i < n_clients; i++)
635 pool_get (tm->sessions, sp);
636 for (i = 0; i < n_clients; i++)
637 pool_put_index (tm->sessions, i);
640 /* Fire off connect requests */
641 time_before_connects = vlib_time_now (vm);
642 clients_connect (vm, uri, n_clients);
644 /* Park until the sessions come up, or ten seconds elapse... */
645 vlib_process_wait_for_event_or_clock (vm, syn_timeout);
646 event_type = vlib_process_get_events (vm, &event_data);
650 vlib_cli_output (vm, "Timeout with only %d sessions active...",
651 tm->ready_connections);
655 delta = vlib_time_now (vm) - time_before_connects;
660 (vm, "%d three-way handshakes in %.2f seconds, %.2f/sec",
661 n_clients, delta, ((f64) n_clients) / delta);
664 tm->test_start_time = vlib_time_now (tm->vlib_main);
665 vlib_cli_output (vm, "Test started at %.6f", tm->test_start_time);
669 vlib_cli_output (vm, "unexpected event(1): %d", event_type);
673 /* Now wait for the sessions to finish... */
674 vlib_process_wait_for_event_or_clock (vm, test_timeout);
675 event_type = vlib_process_get_events (vm, &event_data);
679 vlib_cli_output (vm, "Timeout with %d sessions still active...",
680 tm->ready_connections);
684 tm->test_end_time = vlib_time_now (vm);
685 vlib_cli_output (vm, "Test finished at %.6f", tm->test_end_time);
689 vlib_cli_output (vm, "unexpected event(2): %d", event_type);
693 delta = tm->test_end_time - tm->test_start_time;
697 total_bytes = (tm->no_return ? tm->tx_total : tm->rx_total);
698 transfer_type = tm->no_return ? "half-duplex" : "full-duplex";
700 "%lld bytes (%lld mbytes, %lld gbytes) in %.2f seconds",
701 total_bytes, total_bytes / (1ULL << 20),
702 total_bytes / (1ULL << 30), delta);
703 vlib_cli_output (vm, "%.2f bytes/second %s",
704 ((f64) total_bytes) / (delta), transfer_type);
705 vlib_cli_output (vm, "%.4f gbit/second %s",
706 (((f64) total_bytes * 8.0) / delta / 1e9),
710 vlib_cli_output (vm, "zero delta-t?");
714 for (i = 0; i < vec_len (tm->connection_index_by_thread); i++)
716 vec_reset_length (tm->connection_index_by_thread[i]);
717 vec_reset_length (tm->connections_this_batch_by_thread[i]);
720 pool_free (tm->sessions);
722 /* Detach the application, so we can use different fifo sizes next time */
723 if (tm->test_client_attached)
725 vnet_app_detach_args_t _da, *da = &_da;
728 da->app_index = tm->app_index;
730 rv = vnet_application_detach (da);
732 vlib_cli_output (vm, "WARNING: app detach failed...");
733 tm->test_client_attached = 0;
740 VLIB_CLI_COMMAND (test_clients_command, static) =
742 .path = "test tcp clients",
743 .short_help = "test tcp clients [nclients %d] [[m|g]bytes <bytes>] "
744 "[test-timeout <time>][syn-timeout <time>][no-return][fifo-size <size>]"
745 "[private-segment-count <count>][private-segment-size <bytes>[m|g]]"
746 "[preallocate-fifos][preallocate-sessions][client-batch <batch-size>]"
747 "[uri <tcp://ip/port>]",
748 .function = test_tcp_clients_command_fn,
754 tcp_test_clients_main_init (vlib_main_t * vm)
756 tclient_main_t *tm = &tclient_main;
761 VLIB_INIT_FUNCTION (tcp_test_clients_main_init);
764 * fd.io coding-style-patch-verification: ON
767 * eval: (c-set-style "gnu")