2 * Copyright (c) 2016 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.
19 #include <vppinfra/clib.h>
20 #include <vppinfra/format.h>
21 #include <vppinfra/error.h>
22 #include <vppinfra/time.h>
23 #include <vppinfra/macros.h>
24 #include <vnet/vnet.h>
25 #include <vlib/vlib.h>
26 #include <vlib/unix/unix.h>
27 #include <vlibapi/api.h>
28 #include <vlibmemory/api.h>
29 #include <vpp/api/vpe_msg_enum.h>
30 #include <svm/svm_fifo_segment.h>
32 #include <vnet/session/application_interface.h>
34 #define vl_typedefs /* define message structures */
35 #include <vpp/api/vpe_all_api_h.h>
38 /* declare message handlers for each api */
40 #define vl_endianfun /* define message structures */
41 #include <vpp/api/vpe_all_api_h.h>
44 /* instantiate all the print functions we know about */
45 #define vl_print(handle, ...)
47 #include <vpp/api/vpe_all_api_h.h>
64 svm_queue_t *vl_input_queue;
66 /* API client handle */
69 /* The URI we're playing with */
76 app_session_t *sessions;
78 /* Hash table for disconnect processing */
79 uword *session_index_by_vpp_handles;
82 svm_fifo_segment_private_t *seg;
84 /* intermediate rx buffer */
92 svm_msg_q_t *our_event_queue;
93 svm_msg_q_t *ct_event_queue;
95 /* $$$ single thread only for the moment */
96 svm_msg_q_t *vpp_event_queue;
98 /* $$$$ hack: cut-through session index */
99 volatile u32 cut_through_session_index;
100 volatile u32 connected_session;
102 /* unique segment name counter */
103 u32 unique_segment_index;
108 pthread_t cut_through_thread_handle;
110 /* For deadman timers */
111 clib_time_t clib_time;
113 /* State of the connection, shared between msg RX thread and main thread */
114 volatile connection_state_t state;
116 volatile int time_to_stop;
117 volatile int time_to_print_stats;
119 u32 configured_segment_size;
121 /* VNET_API_ERROR_FOO -> "Foo" hash table */
122 uword *error_string_by_error_number;
124 svm_fifo_segment_main_t segment_main;
126 u8 *connect_test_data;
128 uword *segments_table;
136 udp_echo_main_t udp_echo_main;
139 stop_signal (int signum)
141 udp_echo_main_t *um = &udp_echo_main;
143 um->time_to_stop = 1;
147 stats_signal (int signum)
149 udp_echo_main_t *um = &udp_echo_main;
150 um->time_to_print_stats = 1;
153 static clib_error_t *
154 setup_signal_handlers (void)
156 signal (SIGINT, stats_signal);
157 signal (SIGQUIT, stop_signal);
158 signal (SIGTERM, stop_signal);
164 unformat_ip4_address (unformat_input_t * input, va_list * args)
166 u8 *result = va_arg (*args, u8 *);
169 if (!unformat (input, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]))
172 if (a[0] >= 256 || a[1] >= 256 || a[2] >= 256 || a[3] >= 256)
184 unformat_ip6_address (unformat_input_t * input, va_list * args)
186 ip6_address_t *result = va_arg (*args, ip6_address_t *);
188 uword hex_quad, n_hex_quads, hex_digit, n_hex_digits;
189 uword c, n_colon, double_colon_index;
191 n_hex_quads = hex_quad = n_hex_digits = n_colon = 0;
192 double_colon_index = ARRAY_LEN (hex_quads);
193 while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT)
196 if (c >= '0' && c <= '9')
198 else if (c >= 'a' && c <= 'f')
199 hex_digit = c + 10 - 'a';
200 else if (c >= 'A' && c <= 'F')
201 hex_digit = c + 10 - 'A';
202 else if (c == ':' && n_colon < 2)
206 unformat_put_input (input);
210 /* Too many hex quads. */
211 if (n_hex_quads >= ARRAY_LEN (hex_quads))
216 hex_quad = (hex_quad << 4) | hex_digit;
218 /* Hex quad must fit in 16 bits. */
219 if (n_hex_digits >= 4)
226 /* Save position of :: */
229 /* More than one :: ? */
230 if (double_colon_index < ARRAY_LEN (hex_quads))
232 double_colon_index = n_hex_quads;
235 if (n_colon > 0 && n_hex_digits > 0)
237 hex_quads[n_hex_quads++] = hex_quad;
243 if (n_hex_digits > 0)
244 hex_quads[n_hex_quads++] = hex_quad;
249 /* Expand :: to appropriate number of zero hex quads. */
250 if (double_colon_index < ARRAY_LEN (hex_quads))
252 word n_zero = ARRAY_LEN (hex_quads) - n_hex_quads;
254 for (i = n_hex_quads - 1; i >= (signed) double_colon_index; i--)
255 hex_quads[n_zero + i] = hex_quads[i];
257 for (i = 0; i < n_zero; i++)
258 hex_quads[double_colon_index + i] = 0;
260 n_hex_quads = ARRAY_LEN (hex_quads);
263 /* Too few hex quads given. */
264 if (n_hex_quads < ARRAY_LEN (hex_quads))
267 for (i = 0; i < ARRAY_LEN (hex_quads); i++)
268 result->as_u16[i] = clib_host_to_net_u16 (hex_quads[i]);
275 unformat_uri (unformat_input_t * input, va_list * args)
277 session_endpoint_cfg_t *sep = va_arg (*args, session_endpoint_cfg_t *);
281 if (unformat (input, "%s://%U/%d", &tmp, unformat_ip4_address, &sep->ip.ip4,
284 sep->port = clib_host_to_net_u16 (port);
288 else if (unformat (input, "%s://%U/%d", &tmp, unformat_ip6_address,
289 &sep->ip.ip6, &port))
291 sep->port = clib_host_to_net_u16 (port);
299 application_send_attach (udp_echo_main_t * utm)
301 vl_api_application_attach_t *bmp;
302 bmp = vl_msg_api_alloc (sizeof (*bmp));
303 clib_memset (bmp, 0, sizeof (*bmp));
305 bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_ATTACH);
306 bmp->client_index = utm->my_client_index;
307 bmp->context = ntohl (0xfeedface);
308 bmp->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_ADD_SEGMENT;
309 bmp->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
310 bmp->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE;
311 bmp->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_MQ_FOR_CTRL_MSGS;
312 bmp->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = 2;
313 bmp->options[APP_OPTIONS_RX_FIFO_SIZE] = utm->fifo_size;
314 bmp->options[APP_OPTIONS_TX_FIFO_SIZE] = utm->fifo_size;
315 bmp->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = 128 << 20;
316 bmp->options[APP_OPTIONS_SEGMENT_SIZE] = 256 << 20;
317 bmp->options[APP_OPTIONS_EVT_QUEUE_SIZE] = 16768;
318 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
322 application_detach (udp_echo_main_t * utm)
324 vl_api_application_detach_t *bmp;
325 bmp = vl_msg_api_alloc (sizeof (*bmp));
326 clib_memset (bmp, 0, sizeof (*bmp));
328 bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_DETACH);
329 bmp->client_index = utm->my_client_index;
330 bmp->context = ntohl (0xfeedface);
331 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
335 vl_api_application_attach_reply_t_handler (vl_api_application_attach_reply_t *
338 svm_fifo_segment_create_args_t _a = { 0 }, *a = &_a;
339 udp_echo_main_t *utm = &udp_echo_main;
340 svm_fifo_segment_main_t *sm = &utm->segment_main;
345 clib_warning ("attach failed: %d", mp->retval);
346 utm->state = STATE_FAILED;
350 if (mp->segment_name_length == 0)
352 clib_warning ("segment_name_length zero");
356 a->segment_name = (char *) mp->segment_name;
357 a->segment_size = mp->segment_size;
359 ASSERT (mp->app_event_queue_address);
361 /* Attach to the segment vpp created */
362 rv = svm_fifo_segment_attach (sm, a);
365 clib_warning ("svm_fifo_segment_attach ('%s') failed",
370 utm->our_event_queue = uword_to_pointer (mp->app_event_queue_address,
372 utm->state = STATE_ATTACHED;
376 vl_api_application_detach_reply_t_handler (vl_api_application_detach_reply_t *
380 clib_warning ("detach returned with err: %d", mp->retval);
381 udp_echo_main.state = STATE_DETACHED;
385 format_api_error (u8 * s, va_list * args)
387 udp_echo_main_t *utm = va_arg (*args, udp_echo_main_t *);
388 i32 error = va_arg (*args, u32);
391 p = hash_get (utm->error_string_by_error_number, -error);
394 s = format (s, "%s", p[0]);
396 s = format (s, "%d", error);
401 wait_for_state_change (udp_echo_main_t * utm, connection_state_t state)
404 #define TIMEOUT 600.0
406 #define TIMEOUT 600.0
409 f64 timeout = clib_time_now (&utm->clib_time) + TIMEOUT;
411 while (clib_time_now (&utm->clib_time) < timeout)
413 if (utm->state == state)
415 if (utm->state == STATE_FAILED)
421 u64 server_bytes_received, server_bytes_sent;
424 cut_through_thread_fn (void *arg)
429 u8 *my_copy_buffer = 0;
430 udp_echo_main_t *utm = &udp_echo_main;
432 int rv, do_dequeue = 0;
435 while (utm->cut_through_session_index == ~0)
438 s = pool_elt_at_index (utm->sessions, utm->cut_through_session_index);
440 rx_fifo = s->rx_fifo;
441 tx_fifo = s->tx_fifo;
443 vec_validate (my_copy_buffer, 64 * 1024 - 1);
449 /* We read from the tx fifo and write to the rx fifo */
450 if (utm->have_return || do_dequeue)
451 actual_transfer = svm_fifo_dequeue_nowait (rx_fifo,
457 /* We don't do anything with the data, drop it */
458 actual_transfer = svm_fifo_max_dequeue (rx_fifo);
459 svm_fifo_dequeue_drop (rx_fifo, actual_transfer);
462 while (actual_transfer <= 0);
464 server_bytes_received += actual_transfer;
466 if (utm->have_return)
469 while (actual_transfer > 0)
471 rv = svm_fifo_enqueue_nowait (tx_fifo, actual_transfer,
472 my_copy_buffer + buffer_offset);
475 actual_transfer -= rv;
477 server_bytes_sent += rv;
482 if (PREDICT_FALSE (utm->time_to_stop))
490 session_accepted_handler (session_accepted_msg_t * mp)
492 app_session_evt_t _app_evt, *app_evt = &_app_evt;
493 udp_echo_main_t *utm = &udp_echo_main;
494 session_accepted_reply_msg_t *rmp;
495 svm_fifo_t *rx_fifo, *tx_fifo;
496 app_session_t *session;
497 static f64 start_time;
501 if (start_time == 0.0)
502 start_time = clib_time_now (&utm->clib_time);
504 utm->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address,
506 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
507 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
509 pool_get (utm->sessions, session);
510 clib_memset (session, 0, sizeof (*session));
511 session_index = session - utm->sessions;
512 session->session_index = session_index;
514 /* Cut-through case */
515 if (mp->server_event_queue_address)
517 clib_warning ("cut-through session");
518 session->vpp_evt_q = uword_to_pointer (mp->client_event_queue_address,
521 rx_fifo->master_session_index = session_index;
522 tx_fifo->master_session_index = session_index;
523 utm->cut_through_session_index = session_index;
524 session->rx_fifo = rx_fifo;
525 session->tx_fifo = tx_fifo;
526 session->is_dgram = 0;
528 rv = pthread_create (&utm->cut_through_thread_handle,
529 NULL /*attr */ , cut_through_thread_fn, 0);
532 clib_warning ("pthread_create returned %d", rv);
533 rv = VNET_API_ERROR_SYSCALL_ERROR_1;
538 rx_fifo->client_session_index = session_index;
539 tx_fifo->client_session_index = session_index;
540 session->rx_fifo = rx_fifo;
541 session->tx_fifo = tx_fifo;
542 clib_memcpy_fast (&session->transport.rmt_ip, mp->ip,
543 sizeof (ip46_address_t));
544 session->transport.is_ip4 = mp->is_ip4;
545 session->transport.rmt_port = mp->port;
548 hash_set (utm->session_index_by_vpp_handles, mp->handle, session_index);
549 if (pool_elts (utm->sessions) && (pool_elts (utm->sessions) % 20000) == 0)
551 f64 now = clib_time_now (&utm->clib_time);
552 fformat (stdout, "%d active sessions in %.2f seconds, %.2f/sec...\n",
553 pool_elts (utm->sessions), now - start_time,
554 (f64) pool_elts (utm->sessions) / (now - start_time));
557 app_alloc_ctrl_evt_to_vpp (utm->vpp_event_queue, app_evt,
558 SESSION_CTRL_EVT_ACCEPTED_REPLY);
559 rmp = (session_accepted_reply_msg_t *) app_evt->evt->data;
560 rmp->handle = mp->handle;
561 rmp->context = mp->context;
563 app_send_ctrl_evt_to_vpp (utm->vpp_event_queue, app_evt);
565 CLIB_MEMORY_BARRIER ();
566 utm->state = STATE_READY;
570 session_disconnected_handler (session_disconnected_msg_t * mp)
572 app_session_evt_t _app_evt, *app_evt = &_app_evt;
573 udp_echo_main_t *utm = &udp_echo_main;
574 session_disconnected_reply_msg_t *rmp;
575 app_session_t *session;
579 p = hash_get (utm->session_index_by_vpp_handles, mp->handle);
583 session = pool_elt_at_index (utm->sessions, p[0]);
584 hash_unset (utm->session_index_by_vpp_handles, mp->handle);
585 clib_warning ("disconnecting %u", session->session_index);
586 pool_put (utm->sessions, session);
590 clib_warning ("couldn't find session key %llx", mp->handle);
594 app_alloc_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt,
595 SESSION_CTRL_EVT_DISCONNECTED_REPLY);
596 rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
598 rmp->handle = mp->handle;
599 rmp->context = mp->context;
600 app_send_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt);
604 session_connected_handler (session_connected_msg_t * mp)
606 udp_echo_main_t *utm = &udp_echo_main;
607 unformat_input_t _input, *input = &_input;
608 session_endpoint_cfg_t _sep, *sep = &_sep;
609 app_session_t *session;
611 ASSERT (utm->i_am_server == 0);
615 clib_warning ("failed connect");
619 ASSERT (mp->server_rx_fifo && mp->server_tx_fifo);
621 pool_get (utm->sessions, session);
622 session->session_index = session - utm->sessions;
623 session->rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
624 session->tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
626 /* Cut-through case */
627 if (mp->client_event_queue_address)
629 clib_warning ("cut-through session");
630 session->vpp_evt_q = uword_to_pointer (mp->server_event_queue_address,
632 utm->ct_event_queue = uword_to_pointer (mp->client_event_queue_address,
634 utm->cut_through_session_index = session->session_index;
635 session->is_dgram = 0;
637 session->rx_fifo->client_session_index = session->session_index;
638 session->tx_fifo->client_session_index = session->session_index;
642 utm->connected_session = session->session_index;
643 utm->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address,
646 session->rx_fifo->client_session_index = session->session_index;
647 session->tx_fifo->client_session_index = session->session_index;
648 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
649 sizeof (ip46_address_t));
650 session->transport.is_ip4 = mp->is_ip4;
651 session->transport.lcl_port = mp->lcl_port;
653 unformat_init_vector (input, utm->connect_uri);
654 if (!unformat (input, "%U", unformat_uri, sep))
656 clib_warning ("can't figure out remote ip and port");
657 utm->state = STATE_FAILED;
658 unformat_free (input);
661 unformat_free (input);
662 clib_memcpy_fast (&session->transport.rmt_ip, &sep->ip,
663 sizeof (ip46_address_t));
664 session->transport.rmt_port = sep->port;
665 session->is_dgram = !utm->is_connected;
667 utm->state = STATE_READY;
671 session_bound_handler (session_bound_msg_t * mp)
673 udp_echo_main_t *utm = &udp_echo_main;
674 svm_fifo_t *rx_fifo, *tx_fifo;
675 app_session_t *session;
680 clib_warning ("bind failed: %d", mp->retval);
681 utm->state = STATE_FAILED;
685 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
686 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
688 pool_get (utm->sessions, session);
689 clib_memset (session, 0, sizeof (*session));
690 session_index = session - utm->sessions;
692 rx_fifo->client_session_index = session_index;
693 tx_fifo->client_session_index = session_index;
694 session->rx_fifo = rx_fifo;
695 session->tx_fifo = tx_fifo;
696 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
697 sizeof (ip46_address_t));
698 session->transport.is_ip4 = mp->lcl_is_ip4;
699 session->transport.lcl_port = mp->lcl_port;
700 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
702 utm->state = utm->is_connected ? STATE_BOUND : STATE_READY;
706 handle_mq_event (session_event_t * e)
708 switch (e->event_type)
710 case SESSION_CTRL_EVT_BOUND:
711 session_bound_handler ((session_bound_msg_t *) e->data);
713 case SESSION_CTRL_EVT_ACCEPTED:
714 session_accepted_handler ((session_accepted_msg_t *) e->data);
716 case SESSION_CTRL_EVT_CONNECTED:
717 session_connected_handler ((session_connected_msg_t *) e->data);
719 case SESSION_CTRL_EVT_DISCONNECTED:
720 session_disconnected_handler ((session_disconnected_msg_t *) e->data);
723 clib_warning ("unhandled %u", e->event_type);
728 udp_client_send_connect (udp_echo_main_t * utm)
730 vl_api_connect_uri_t *cmp;
731 cmp = vl_msg_api_alloc (sizeof (*cmp));
732 clib_memset (cmp, 0, sizeof (*cmp));
734 cmp->_vl_msg_id = ntohs (VL_API_CONNECT_URI);
735 cmp->client_index = utm->my_client_index;
736 cmp->context = ntohl (0xfeedface);
737 memcpy (cmp->uri, utm->connect_uri, vec_len (utm->connect_uri));
738 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & cmp);
742 send_test_chunk (udp_echo_main_t * utm, app_session_t * s, u32 bytes)
744 u64 test_buf_len, bytes_this_chunk, test_buf_offset;
746 u8 *test_data = utm->connect_test_data;
747 u32 bytes_to_snd, enq_space, min_chunk;
748 session_evt_type_t et = FIFO_EVENT_APP_TX;
751 test_buf_len = vec_len (test_data);
752 test_buf_offset = utm->bytes_sent % test_buf_len;
753 bytes_this_chunk = clib_min (test_buf_len - test_buf_offset,
755 enq_space = svm_fifo_max_enqueue (s->tx_fifo);
756 bytes_this_chunk = clib_min (bytes_this_chunk, enq_space);
757 et += (s->session_index == utm->cut_through_session_index);
760 written = app_send_dgram_raw (s->tx_fifo, &s->transport, s->vpp_evt_q,
761 test_data + test_buf_offset,
762 bytes_this_chunk, et, SVM_Q_WAIT);
764 written = app_send_stream_raw (s->tx_fifo, s->vpp_evt_q,
765 test_data + test_buf_offset,
766 bytes_this_chunk, et, SVM_Q_WAIT);
770 utm->bytes_to_send -= written;
771 utm->bytes_sent += written;
776 recv_test_chunk (udp_echo_main_t * utm, app_session_t * s)
778 app_recv (s, utm->rx_buf, vec_len (utm->rx_buf));
782 client_send_data (udp_echo_main_t * utm, u32 session_index)
784 f64 start_time, end_time, delta;
785 app_session_t *session;
790 vec_validate_aligned (utm->connect_test_data, 1024 * 1024 - 1,
791 CLIB_CACHE_LINE_BYTES);
792 for (i = 0; i < vec_len (utm->connect_test_data); i++)
793 utm->connect_test_data[i] = i & 0xff;
795 test_data = utm->connect_test_data;
796 session = pool_elt_at_index (utm->sessions, session_index);
797 ASSERT (vec_len (test_data) > 0);
799 utm->total_to_send = utm->bytes_to_send;
800 vec_validate (utm->rx_buf, vec_len (test_data) - 1);
801 start_time = clib_time_now (&utm->clib_time);
802 while (!utm->time_to_stop && utm->bytes_to_send)
804 send_test_chunk (utm, session, 0);
805 if (utm->have_return)
806 recv_test_chunk (utm, session);
807 if (utm->time_to_stop)
811 if (utm->have_return)
813 f64 timeout = clib_time_now (&utm->clib_time) + 5;
814 while (clib_time_now (&utm->clib_time) < timeout)
815 recv_test_chunk (utm, session);
818 end_time = clib_time_now (&utm->clib_time);
819 delta = end_time - start_time;
820 transfer_type = utm->have_return ? "full-duplex" : "half-duplex";
821 clib_warning ("%lld bytes (%lld mbytes, %lld gbytes) in %.2f seconds",
822 utm->total_to_send, utm->total_to_send / (1ULL << 20),
823 utm->total_to_send / (1ULL << 30), delta);
824 clib_warning ("%.2f bytes/second %s", ((f64) utm->total_to_send) / (delta),
826 clib_warning ("%.4f gbit/second %s",
827 (((f64) utm->total_to_send * 8.0) / delta / 1e9),
832 application_attach (udp_echo_main_t * utm)
834 application_send_attach (utm);
835 if (wait_for_state_change (utm, STATE_ATTACHED))
837 clib_warning ("timeout waiting for STATE_ATTACHED");
844 client_test (udp_echo_main_t * utm)
846 f64 start_time, timeout = 100.0;
847 app_session_t *session;
851 if (application_attach (utm))
854 udp_client_send_connect (utm);
856 start_time = clib_time_now (&utm->clib_time);
857 while (pool_elts (utm->sessions) != 1 && utm->state != STATE_FAILED)
859 svm_msg_q_sub (utm->our_event_queue, &msg, SVM_Q_WAIT, 0);
860 e = svm_msg_q_msg_data (utm->our_event_queue, &msg);
862 svm_msg_q_free_msg (utm->our_event_queue, &msg);
864 if (clib_time_now (&utm->clib_time) - start_time >= timeout)
868 if (utm->cut_through_session_index != ~0)
869 client_send_data (utm, utm->cut_through_session_index);
871 client_send_data (utm, utm->connected_session);
873 application_detach (utm);
874 wait_for_state_change (utm, STATE_DETACHED);
878 vl_api_bind_uri_reply_t_handler (vl_api_bind_uri_reply_t * mp)
880 udp_echo_main_t *utm = &udp_echo_main;
881 svm_fifo_t *rx_fifo, *tx_fifo;
882 app_session_t *session;
887 clib_warning ("bind failed: %d", mp->retval);
888 utm->state = STATE_FAILED;
892 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
893 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
895 pool_get (utm->sessions, session);
896 clib_memset (session, 0, sizeof (*session));
897 session_index = session - utm->sessions;
899 rx_fifo->client_session_index = session_index;
900 tx_fifo->client_session_index = session_index;
901 session->rx_fifo = rx_fifo;
902 session->tx_fifo = tx_fifo;
903 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
904 sizeof (ip46_address_t));
905 session->transport.is_ip4 = mp->lcl_is_ip4;
906 session->transport.lcl_port = mp->lcl_port;
907 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
909 utm->state = utm->is_connected ? STATE_BOUND : STATE_READY;
913 vl_api_map_another_segment_t_handler (vl_api_map_another_segment_t * mp)
915 svm_fifo_segment_create_args_t _a, *a = &_a;
916 udp_echo_main_t *utm = &udp_echo_main;
917 svm_fifo_segment_main_t *sm = &utm->segment_main;
918 svm_fifo_segment_private_t *seg;
921 clib_memset (a, 0, sizeof (*a));
922 a->segment_name = (char *) mp->segment_name;
923 a->segment_size = mp->segment_size;
924 /* Attach to the segment vpp created */
925 rv = svm_fifo_segment_attach (sm, a);
928 clib_warning ("svm_fifo_segment_attach ('%s') failed",
932 seg = svm_fifo_segment_get_segment (sm, a->new_segment_indices[0]);
933 clib_warning ("Mapped new segment '%s' size %d", seg->ssvm.name,
934 seg->ssvm.ssvm_size);
935 hash_set (utm->segments_table, clib_net_to_host_u64 (mp->segment_handle),
936 a->new_segment_indices[0]);
940 vl_api_unmap_segment_t_handler (vl_api_unmap_segment_t * mp)
942 udp_echo_main_t *utm = &udp_echo_main;
943 svm_fifo_segment_main_t *sm = &utm->segment_main;
944 svm_fifo_segment_private_t *seg;
945 u64 *seg_indexp, segment_handle;
947 segment_handle = clib_net_to_host_u64 (mp->segment_handle);
948 seg_indexp = hash_get (utm->segments_table, segment_handle);
951 clib_warning ("segment not mapped: %s", segment_handle);
954 hash_unset (utm->segments_table, segment_handle);
955 seg = svm_fifo_segment_get_segment (sm, (u32) seg_indexp[0]);
956 svm_fifo_segment_delete (sm, seg);
957 clib_warning ("Unmapped segment '%s'", segment_handle);
961 vl_api_unbind_uri_reply_t_handler (vl_api_unbind_uri_reply_t * mp)
963 udp_echo_main_t *utm = &udp_echo_main;
966 clib_warning ("returned %d", ntohl (mp->retval));
968 utm->state = STATE_START;
972 vl_api_app_cut_through_registration_add_t_handler
973 (vl_api_app_cut_through_registration_add_t * mp)
978 #define foreach_tcp_echo_msg \
979 _(BIND_URI_REPLY, bind_uri_reply) \
980 _(UNBIND_URI_REPLY, unbind_uri_reply) \
981 _(MAP_ANOTHER_SEGMENT, map_another_segment) \
982 _(UNMAP_SEGMENT, unmap_segment) \
983 _(APPLICATION_ATTACH_REPLY, application_attach_reply) \
984 _(APPLICATION_DETACH_REPLY, application_detach_reply) \
985 _(APP_CUT_THROUGH_REGISTRATION_ADD, app_cut_through_registration_add) \
988 tcp_echo_api_hookup (udp_echo_main_t * utm)
991 vl_msg_api_set_handlers(VL_API_##N, #n, \
992 vl_api_##n##_t_handler, \
994 vl_api_##n##_t_endian, \
995 vl_api_##n##_t_print, \
996 sizeof(vl_api_##n##_t), 1);
997 foreach_tcp_echo_msg;
1003 connect_to_vpp (char *name)
1005 udp_echo_main_t *utm = &udp_echo_main;
1006 api_main_t *am = &api_main;
1008 if (vl_client_connect_to_vlib ("/vpe-api", name, 32) < 0)
1011 utm->vl_input_queue = am->shmem_hdr->vl_input_queue;
1012 utm->my_client_index = am->my_client_index;
1018 vlib_cli_output (struct vlib_main_t *vm, char *fmt, ...)
1020 clib_warning ("BUG");
1024 init_error_string_table (udp_echo_main_t * utm)
1026 utm->error_string_by_error_number = hash_create (0, sizeof (uword));
1028 #define _(n,v,s) hash_set (utm->error_string_by_error_number, -v, s);
1029 foreach_vnet_api_error;
1032 hash_set (utm->error_string_by_error_number, 99, "Misc");
1036 server_handle_fifo_event_rx (udp_echo_main_t * utm, u32 session_index)
1038 svm_fifo_t *rx_fifo, *tx_fifo;
1040 app_session_t *session;
1042 u32 max_dequeue, offset, max_transfer, rx_buf_len;
1043 session_evt_type_t et = FIFO_EVENT_APP_TX;
1045 session = pool_elt_at_index (utm->sessions, session_index);
1046 rx_buf_len = vec_len (utm->rx_buf);
1047 rx_fifo = session->rx_fifo;
1048 tx_fifo = session->tx_fifo;
1050 et += (session->session_index == utm->cut_through_session_index);
1052 max_dequeue = svm_fifo_max_dequeue (rx_fifo);
1053 /* Allow enqueuing of a new event */
1054 svm_fifo_unset_event (rx_fifo);
1056 if (PREDICT_FALSE (!max_dequeue))
1059 /* Read the max_dequeue */
1062 max_transfer = clib_min (rx_buf_len, max_dequeue);
1063 if (session->is_dgram)
1064 n_read = app_recv_dgram_raw (rx_fifo, utm->rx_buf, max_transfer,
1065 &session->transport, 0, 0);
1067 n_read = app_recv_stream_raw (rx_fifo, utm->rx_buf, max_transfer, 0,
1071 max_dequeue -= n_read;
1073 /* Reflect if a non-drop session */
1074 if (utm->have_return && n_read > 0)
1079 if (session->is_dgram)
1080 rv = app_send_dgram_raw (tx_fifo, &session->transport,
1082 &utm->rx_buf[offset], n_read, et,
1085 rv = app_send_stream_raw (tx_fifo, session->vpp_evt_q,
1086 &utm->rx_buf[offset], n_read, et,
1094 while ((rv <= 0 || n_read > 0) && !utm->time_to_stop);
1096 /* If event wasn't set, add one */
1097 if (svm_fifo_set_event (tx_fifo))
1098 app_send_io_evt_to_vpp (session->vpp_evt_q, tx_fifo,
1102 while ((n_read < 0 || max_dequeue > 0) && !utm->time_to_stop);
1106 server_handle_event_queue (udp_echo_main_t * utm)
1109 svm_msg_q_msg_t msg;
1110 svm_msg_q_t *mq = utm->our_event_queue;
1113 while (utm->state != STATE_READY)
1118 if (svm_msg_q_sub (mq, &msg, SVM_Q_WAIT, 0))
1120 clib_warning ("svm msg q returned");
1123 e = svm_msg_q_msg_data (mq, &msg);
1124 switch (e->event_type)
1126 case FIFO_EVENT_APP_RX:
1127 server_handle_fifo_event_rx (utm, e->fifo->client_session_index);
1129 case SESSION_IO_EVT_CT_TX:
1133 handle_mq_event (e);
1136 svm_msg_q_free_msg (mq, &msg);
1137 if (PREDICT_FALSE (utm->time_to_stop == 1))
1139 if (PREDICT_FALSE (utm->time_to_print_stats == 1))
1141 utm->time_to_print_stats = 0;
1142 fformat (stdout, "%d connections\n", pool_elts (utm->sessions));
1148 server_unbind (udp_echo_main_t * utm)
1150 vl_api_unbind_uri_t *ump;
1152 ump = vl_msg_api_alloc (sizeof (*ump));
1153 clib_memset (ump, 0, sizeof (*ump));
1155 ump->_vl_msg_id = ntohs (VL_API_UNBIND_URI);
1156 ump->client_index = utm->my_client_index;
1157 memcpy (ump->uri, utm->listen_uri, vec_len (utm->listen_uri));
1158 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & ump);
1162 server_bind (udp_echo_main_t * utm)
1164 vl_api_bind_uri_t *bmp;
1166 bmp = vl_msg_api_alloc (sizeof (*bmp));
1167 clib_memset (bmp, 0, sizeof (*bmp));
1169 bmp->_vl_msg_id = ntohs (VL_API_BIND_URI);
1170 bmp->client_index = utm->my_client_index;
1171 bmp->context = ntohl (0xfeedface);
1172 memcpy (bmp->uri, utm->listen_uri, vec_len (utm->listen_uri));
1173 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
1177 udp_server_test (udp_echo_main_t * utm)
1179 u8 wait_for_state = utm->is_connected ? STATE_BOUND : STATE_READY;
1180 application_send_attach (utm);
1185 if (wait_for_state_change (utm, wait_for_state))
1187 clib_warning ("timeout waiting for state change");
1191 server_handle_event_queue (utm);
1194 server_unbind (utm);
1196 if (wait_for_state_change (utm, STATE_START))
1198 clib_warning ("timeout waiting for STATE_START");
1202 application_detach (utm);
1204 fformat (stdout, "Test complete...\n");
1208 main (int argc, char **argv)
1210 udp_echo_main_t *utm = &udp_echo_main;
1211 svm_fifo_segment_main_t *sm = &utm->segment_main;
1212 u8 *uri = (u8 *) "udp://6.0.1.1/1234";
1213 unformat_input_t _argv, *a = &_argv;
1214 int i_am_server = 1;
1215 app_session_t *session;
1221 clib_mem_init_thread_safe (0, 256 << 20);
1223 svm_fifo_segment_main_init (sm, 0x200000000ULL, 20);
1225 vec_validate (utm->rx_buf, 128 << 10);
1226 utm->session_index_by_vpp_handles = hash_create (0, sizeof (uword));
1227 utm->my_pid = getpid ();
1228 utm->configured_segment_size = 1 << 20;
1229 utm->have_return = 1;
1230 utm->bytes_to_send = 1024;
1231 utm->fifo_size = 128 << 10;
1232 utm->cut_through_session_index = ~0;
1233 clib_time_init (&utm->clib_time);
1235 init_error_string_table (utm);
1236 unformat_init_command_line (a, argv);
1238 while (unformat_check_input (a) != UNFORMAT_END_OF_INPUT)
1240 if (unformat (a, "chroot prefix %s", &chroot_prefix))
1242 vl_set_memory_root_path ((char *) chroot_prefix);
1244 else if (unformat (a, "uri %s", &uri))
1246 else if (unformat (a, "segment-size %dM", &tmp))
1247 utm->configured_segment_size = tmp << 20;
1248 else if (unformat (a, "segment-size %dG", &tmp))
1249 utm->configured_segment_size = tmp << 30;
1250 else if (unformat (a, "server"))
1252 else if (unformat (a, "client"))
1254 else if (unformat (a, "no-return"))
1255 utm->have_return = 0;
1256 else if (unformat (a, "mbytes %d", &tmp))
1257 utm->bytes_to_send = (u64) tmp << 20;
1258 else if (unformat (a, "fifo-size %d", &tmp))
1259 utm->fifo_size = tmp << 10;
1262 fformat (stderr, "%s: usage [server|client]\n");
1267 utm->i_am_server = i_am_server;
1269 setup_signal_handlers ();
1270 tcp_echo_api_hookup (utm);
1274 utm->listen_uri = format (0, "%s%c", uri, 0);
1275 utm->is_connected = (utm->listen_uri[4] == 'c');
1276 app_name = "udp_echo_server";
1280 app_name = "udp_echo_client";
1281 utm->connect_uri = format (0, "%s%c", uri, 0);
1282 utm->is_connected = (utm->connect_uri[4] == 'c');
1284 if (connect_to_vpp (app_name) < 0)
1287 fformat (stderr, "Couldn't connect to vpe, exiting...\n");
1291 if (i_am_server == 0)
1297 /* $$$$ hack preallocation */
1298 for (i = 0; i < 200000; i++)
1300 pool_get (utm->sessions, session);
1301 clib_memset (session, 0, sizeof (*session));
1303 for (i = 0; i < 200000; i++)
1304 pool_put_index (utm->sessions, i);
1306 udp_server_test (utm);
1309 vl_client_disconnect_from_vlib ();
1313 #undef vl_api_version
1314 #define vl_api_version(n,v) static u32 vpe_api_version = v;
1315 #include <vpp/api/vpe.api.h>
1316 #undef vl_api_version
1319 vl_client_add_api_signatures (vl_api_memclnt_create_t * mp)
1322 * Send the main API signature in slot 0. This bit of code must
1323 * match the checks in ../vpe/api/api.c: vl_msg_api_version_check().
1325 mp->api_versions[0] = clib_host_to_net_u32 (vpe_api_version);
1335 * fd.io coding-style-patch-verification: ON
1338 * eval: (c-set-style "gnu")