2 * Copyright (c) 2017-2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with 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.
16 #include <vnet/vnet.h>
17 #include <vlibmemory/api.h>
18 #include <vnet/session/application.h>
19 #include <vnet/session/application_interface.h>
20 #include <vnet/session/session.h>
22 #define ECHO_SERVER_DBG (0)
23 #define DBG(_fmt, _args...) \
24 if (ECHO_SERVER_DBG) \
25 clib_warning (_fmt, ##_args)
30 * Server app parameters
32 svm_msg_q_t **vpp_queue;
33 svm_queue_t *vl_input_queue; /**< Sever's event queue */
35 u32 app_index; /**< Server app index */
36 u32 my_client_index; /**< API client handle */
37 u32 node_index; /**< process node index for event scheduling */
42 u8 no_echo; /**< Don't echo traffic */
43 u32 fifo_size; /**< Fifo size */
44 u32 rcv_buffer_size; /**< Rcv buffer size */
45 u32 prealloc_fifos; /**< Preallocate fifos */
46 u32 private_segment_count; /**< Number of private segments */
47 u32 private_segment_size; /**< Size of private segments */
48 char *server_uri; /**< Server URI */
49 u32 tls_engine; /**< TLS engine: mbedtls/openssl */
50 u8 is_dgram; /**< set if transport is dgram */
54 u8 **rx_buf; /**< Per-thread RX buffer */
59 vlib_main_t *vlib_main;
62 echo_server_main_t echo_server_main;
65 quic_echo_server_qsession_accept_callback (session_t * s)
67 DBG ("QSession %u accept w/opaque %d", s->session_index, s->opaque);
72 quic_echo_server_session_accept_callback (session_t * s)
74 echo_server_main_t *esm = &echo_server_main;
75 if (!(s->flags & SESSION_F_QUIC_STREAM))
76 return quic_echo_server_qsession_accept_callback (s);
77 DBG ("SSESSION %u accept w/opaque %d", s->session_index, s->opaque);
79 esm->vpp_queue[s->thread_index] =
80 session_main_get_vpp_event_queue (s->thread_index);
81 s->session_state = SESSION_STATE_READY;
83 ASSERT (vec_len (esm->rx_retries) > s->thread_index);
84 vec_validate (esm->rx_retries[s->thread_index], s->session_index);
85 esm->rx_retries[s->thread_index][s->session_index] = 0;
90 echo_server_session_accept_callback (session_t * s)
92 echo_server_main_t *esm = &echo_server_main;
93 esm->vpp_queue[s->thread_index] =
94 session_main_get_vpp_event_queue (s->thread_index);
95 s->session_state = SESSION_STATE_READY;
97 ASSERT (vec_len (esm->rx_retries) > s->thread_index);
98 vec_validate (esm->rx_retries[s->thread_index], s->session_index);
99 esm->rx_retries[s->thread_index][s->session_index] = 0;
104 echo_server_session_disconnect_callback (session_t * s)
106 echo_server_main_t *esm = &echo_server_main;
107 vnet_disconnect_args_t _a = { 0 }, *a = &_a;
109 a->handle = session_handle (s);
110 a->app_index = esm->app_index;
111 vnet_disconnect_session (a);
115 echo_server_session_reset_callback (session_t * s)
117 echo_server_main_t *esm = &echo_server_main;
118 vnet_disconnect_args_t _a = { 0 }, *a = &_a;
119 clib_warning ("Reset session %U", format_session, s, 2);
120 a->handle = session_handle (s);
121 a->app_index = esm->app_index;
122 vnet_disconnect_session (a);
126 echo_server_session_connected_callback (u32 app_index, u32 api_context,
127 session_t * s, u8 is_fail)
129 clib_warning ("called...");
134 echo_server_add_segment_callback (u32 client_index, u64 segment_handle)
136 /* New heaps may be added */
141 echo_server_redirect_connect_callback (u32 client_index, void *mp)
143 clib_warning ("called...");
148 test_bytes (echo_server_main_t * esm, int actual_transfer)
151 u32 my_thread_id = vlib_get_thread_index ();
153 for (i = 0; i < actual_transfer; i++)
155 if (esm->rx_buf[my_thread_id][i] != ((esm->byte_index + i) & 0xff))
157 clib_warning ("at %lld expected %d got %d", esm->byte_index + i,
158 (esm->byte_index + i) & 0xff,
159 esm->rx_buf[my_thread_id][i]);
162 esm->byte_index += actual_transfer;
166 * If no-echo, just drop the data and be done with it.
169 echo_server_builtin_server_rx_callback_no_echo (session_t * s)
171 svm_fifo_t *rx_fifo = s->rx_fifo;
172 svm_fifo_dequeue_drop (rx_fifo, svm_fifo_max_dequeue_cons (rx_fifo));
177 echo_server_rx_callback (session_t * s)
179 u32 n_written, max_dequeue, max_enqueue, max_transfer;
181 svm_fifo_t *tx_fifo, *rx_fifo;
182 echo_server_main_t *esm = &echo_server_main;
183 u32 thread_index = vlib_get_thread_index ();
184 app_session_transport_t at;
186 ASSERT (s->thread_index == thread_index);
188 rx_fifo = s->rx_fifo;
189 tx_fifo = s->tx_fifo;
191 ASSERT (rx_fifo->master_thread_index == thread_index);
192 ASSERT (tx_fifo->master_thread_index == thread_index);
194 max_enqueue = svm_fifo_max_enqueue_prod (tx_fifo);
197 max_dequeue = svm_fifo_max_dequeue_cons (rx_fifo);
201 session_dgram_pre_hdr_t ph;
202 svm_fifo_peek (rx_fifo, 0, sizeof (ph), (u8 *) & ph);
203 max_dequeue = ph.data_length - ph.data_offset;
204 if (!esm->vpp_queue[s->thread_index])
207 mq = session_main_get_vpp_event_queue (s->thread_index);
208 esm->vpp_queue[s->thread_index] = mq;
210 max_enqueue -= sizeof (session_dgram_hdr_t);
213 if (PREDICT_FALSE (max_dequeue == 0))
216 /* Number of bytes we're going to copy */
217 max_transfer = clib_min (max_dequeue, max_enqueue);
219 /* No space in tx fifo */
220 if (PREDICT_FALSE (max_transfer == 0))
222 /* XXX timeout for session that are stuck */
225 /* Program self-tap to retry */
226 if (svm_fifo_set_event (rx_fifo))
228 if (session_send_io_evt_to_thread (rx_fifo,
229 SESSION_IO_EVT_BUILTIN_RX))
230 clib_warning ("failed to enqueue self-tap");
232 vec_validate (esm->rx_retries[s->thread_index], s->session_index);
233 if (esm->rx_retries[thread_index][s->session_index] == 500000)
235 clib_warning ("session stuck: %U", format_session, s, 2);
237 if (esm->rx_retries[thread_index][s->session_index] < 500001)
238 esm->rx_retries[thread_index][s->session_index]++;
244 vec_validate (esm->rx_buf[thread_index], max_transfer);
247 actual_transfer = app_recv_stream_raw (rx_fifo,
248 esm->rx_buf[thread_index],
250 0 /* don't clear event */ ,
255 actual_transfer = app_recv_dgram_raw (rx_fifo,
256 esm->rx_buf[thread_index],
258 0 /* don't clear event */ ,
261 ASSERT (actual_transfer == max_transfer);
262 /* test_bytes (esm, actual_transfer); */
270 n_written = app_send_stream_raw (tx_fifo,
271 esm->vpp_queue[thread_index],
272 esm->rx_buf[thread_index],
273 actual_transfer, SESSION_IO_EVT_TX,
278 n_written = app_send_dgram_raw (tx_fifo, &at,
279 esm->vpp_queue[s->thread_index],
280 esm->rx_buf[thread_index],
281 actual_transfer, SESSION_IO_EVT_TX,
285 if (n_written != max_transfer)
286 clib_warning ("short trout! written %u read %u", n_written, max_transfer);
288 if (PREDICT_FALSE (svm_fifo_max_dequeue_cons (rx_fifo)))
294 static session_cb_vft_t echo_server_session_cb_vft = {
295 .session_accept_callback = echo_server_session_accept_callback,
296 .session_disconnect_callback = echo_server_session_disconnect_callback,
297 .session_connected_callback = echo_server_session_connected_callback,
298 .add_segment_callback = echo_server_add_segment_callback,
299 .builtin_app_rx_callback = echo_server_rx_callback,
300 .session_reset_callback = echo_server_session_reset_callback
303 /* Abuse VPP's input queue */
305 create_api_loopback (vlib_main_t * vm)
307 echo_server_main_t *esm = &echo_server_main;
308 api_main_t *am = &api_main;
309 vl_shmem_hdr_t *shmem_hdr;
311 shmem_hdr = am->shmem_hdr;
312 esm->vl_input_queue = shmem_hdr->vl_input_queue;
313 esm->my_client_index = vl_api_memclnt_create_internal ("echo_server",
314 esm->vl_input_queue);
319 echo_server_attach (u8 * appns_id, u64 appns_flags, u64 appns_secret)
321 vnet_app_add_tls_cert_args_t _a_cert, *a_cert = &_a_cert;
322 vnet_app_add_tls_key_args_t _a_key, *a_key = &_a_key;
323 echo_server_main_t *esm = &echo_server_main;
324 vnet_app_attach_args_t _a, *a = &_a;
325 u64 options[APP_OPTIONS_N_OPTIONS];
326 u32 segment_size = 512 << 20;
328 clib_memset (a, 0, sizeof (*a));
329 clib_memset (options, 0, sizeof (options));
332 echo_server_session_cb_vft.builtin_app_rx_callback =
333 echo_server_builtin_server_rx_callback_no_echo;
335 echo_server_session_cb_vft.builtin_app_rx_callback =
336 echo_server_rx_callback;
337 if (esm->transport_proto == TRANSPORT_PROTO_QUIC)
338 echo_server_session_cb_vft.session_accept_callback =
339 quic_echo_server_session_accept_callback;
341 if (esm->private_segment_size)
342 segment_size = esm->private_segment_size;
344 a->api_client_index = esm->my_client_index;
345 a->session_cb_vft = &echo_server_session_cb_vft;
346 a->options = options;
347 a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size;
348 a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = segment_size;
349 a->options[APP_OPTIONS_RX_FIFO_SIZE] = esm->fifo_size;
350 a->options[APP_OPTIONS_TX_FIFO_SIZE] = esm->fifo_size;
351 a->options[APP_OPTIONS_PRIVATE_SEGMENT_COUNT] = esm->private_segment_count;
352 a->options[APP_OPTIONS_TLS_ENGINE] = esm->tls_engine;
353 a->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] =
354 esm->prealloc_fifos ? esm->prealloc_fifos : 1;
356 a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN;
359 a->namespace_id = appns_id;
360 a->options[APP_OPTIONS_FLAGS] |= appns_flags;
361 a->options[APP_OPTIONS_NAMESPACE_SECRET] = appns_secret;
364 if (vnet_application_attach (a))
366 clib_warning ("failed to attach server");
369 esm->app_index = a->app_index;
371 clib_memset (a_cert, 0, sizeof (*a_cert));
372 a_cert->app_index = a->app_index;
373 vec_validate (a_cert->cert, test_srv_crt_rsa_len);
374 clib_memcpy_fast (a_cert->cert, test_srv_crt_rsa, test_srv_crt_rsa_len);
375 vnet_app_add_tls_cert (a_cert);
377 clib_memset (a_key, 0, sizeof (*a_key));
378 a_key->app_index = a->app_index;
379 vec_validate (a_key->key, test_srv_key_rsa_len);
380 clib_memcpy_fast (a_key->key, test_srv_key_rsa, test_srv_key_rsa_len);
381 vnet_app_add_tls_key (a_key);
386 echo_server_detach (void)
388 echo_server_main_t *esm = &echo_server_main;
389 vnet_app_detach_args_t _da, *da = &_da;
392 da->app_index = esm->app_index;
393 rv = vnet_application_detach (da);
399 echo_server_listen ()
401 echo_server_main_t *esm = &echo_server_main;
402 vnet_listen_args_t _a, *a = &_a;
403 clib_memset (a, 0, sizeof (*a));
404 a->app_index = esm->app_index;
405 a->uri = esm->server_uri;
406 return vnet_bind_uri (a);
410 echo_server_create (vlib_main_t * vm, u8 * appns_id, u64 appns_flags,
413 echo_server_main_t *esm = &echo_server_main;
414 vlib_thread_main_t *vtm = vlib_get_thread_main ();
418 if (esm->my_client_index == (u32) ~ 0)
420 if (create_api_loopback (vm))
422 clib_warning ("failed to create api loopback");
427 num_threads = 1 /* main thread */ + vtm->n_threads;
428 vec_validate (echo_server_main.vpp_queue, num_threads - 1);
429 vec_validate (esm->rx_buf, num_threads - 1);
430 vec_validate (esm->rx_retries, num_threads - 1);
431 for (i = 0; i < vec_len (esm->rx_retries); i++)
432 vec_validate (esm->rx_retries[i],
433 pool_elts (session_main.wrk[i].sessions));
434 esm->rcv_buffer_size = clib_max (esm->rcv_buffer_size, esm->fifo_size);
435 for (i = 0; i < num_threads; i++)
436 vec_validate (esm->rx_buf[i], esm->rcv_buffer_size);
438 if (echo_server_attach (appns_id, appns_flags, appns_secret))
440 clib_warning ("failed to attach server");
443 if (echo_server_listen ())
445 clib_warning ("failed to start listening");
446 if (echo_server_detach ())
447 clib_warning ("failed to detach");
453 static clib_error_t *
454 echo_server_create_command_fn (vlib_main_t * vm, unformat_input_t * input,
455 vlib_cli_command_t * cmd)
457 echo_server_main_t *esm = &echo_server_main;
458 u8 server_uri_set = 0, *appns_id = 0;
459 u64 tmp, appns_flags = 0, appns_secret = 0;
460 char *default_uri = "tcp://0.0.0.0/1234";
462 session_endpoint_cfg_t sep = SESSION_ENDPOINT_CFG_NULL;
465 esm->fifo_size = 64 << 10;
466 esm->rcv_buffer_size = 128 << 10;
467 esm->prealloc_fifos = 0;
468 esm->private_segment_count = 0;
469 esm->private_segment_size = 0;
470 esm->tls_engine = TLS_ENGINE_OPENSSL;
471 vec_free (esm->server_uri);
473 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
475 if (unformat (input, "uri %s", &esm->server_uri))
477 else if (unformat (input, "no-echo"))
479 else if (unformat (input, "fifo-size %d", &esm->fifo_size))
480 esm->fifo_size <<= 10;
481 else if (unformat (input, "rcv-buf-size %d", &esm->rcv_buffer_size))
483 else if (unformat (input, "prealloc-fifos %d", &esm->prealloc_fifos))
485 else if (unformat (input, "private-segment-count %d",
486 &esm->private_segment_count))
488 else if (unformat (input, "private-segment-size %U",
489 unformat_memory_size, &tmp))
491 if (tmp >= 0x100000000ULL)
492 return clib_error_return
493 (0, "private segment size %lld (%llu) too large", tmp, tmp);
494 esm->private_segment_size = tmp;
496 else if (unformat (input, "appns %_%v%_", &appns_id))
498 else if (unformat (input, "all-scope"))
499 appns_flags |= (APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE
500 | APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE);
501 else if (unformat (input, "local-scope"))
502 appns_flags |= APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE;
503 else if (unformat (input, "global-scope"))
504 appns_flags |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
505 else if (unformat (input, "secret %lu", &appns_secret))
507 else if (unformat (input, "stop"))
509 else if (unformat (input, "tls-engine %d", &esm->tls_engine))
512 return clib_error_return (0, "failed: unknown input `%U'",
513 format_unformat_error, input);
518 if (esm->app_index == (u32) ~ 0)
520 clib_warning ("server not running");
521 return clib_error_return (0, "failed: server not running");
523 rv = echo_server_detach ();
526 clib_warning ("failed: detach");
527 return clib_error_return (0, "failed: server detach %d", rv);
532 vnet_session_enable_disable (vm, 1 /* turn on TCP, etc. */ );
536 clib_warning ("No uri provided! Using default: %s", default_uri);
537 esm->server_uri = (char *) format (0, "%s%c", default_uri, 0);
540 if ((rv = parse_uri ((char *) esm->server_uri, &sep)))
541 return clib_error_return (0, "Uri parse error: %d", rv);
542 esm->transport_proto = sep.transport_proto;
543 esm->is_dgram = (sep.transport_proto == TRANSPORT_PROTO_UDP);
545 rv = echo_server_create (vm, appns_id, appns_flags, appns_secret);
549 vec_free (esm->server_uri);
550 return clib_error_return (0, "failed: server_create returned %d", rv);
557 VLIB_CLI_COMMAND (echo_server_create_command, static) =
559 .path = "test echo server",
560 .short_help = "test echo server proto <proto> [no echo][fifo-size <mbytes>]"
561 "[rcv-buf-size <bytes>][prealloc-fifos <count>]"
562 "[private-segment-count <count>][private-segment-size <bytes[m|g]>]"
563 "[uri <tcp://ip/port>]",
564 .function = echo_server_create_command_fn,
569 echo_server_main_init (vlib_main_t * vm)
571 echo_server_main_t *esm = &echo_server_main;
572 esm->my_client_index = ~0;
576 VLIB_INIT_FUNCTION (echo_server_main_init);
579 * fd.io coding-style-patch-verification: ON
582 * eval: (c-set-style "gnu")