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_PREALLOC_FIFO_PAIRS] = 2;
312 bmp->options[APP_OPTIONS_RX_FIFO_SIZE] = utm->fifo_size;
313 bmp->options[APP_OPTIONS_TX_FIFO_SIZE] = utm->fifo_size;
314 bmp->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = 128 << 20;
315 bmp->options[APP_OPTIONS_SEGMENT_SIZE] = 256 << 20;
316 bmp->options[APP_OPTIONS_EVT_QUEUE_SIZE] = 16768;
317 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
321 application_detach (udp_echo_main_t * utm)
323 vl_api_application_detach_t *bmp;
324 bmp = vl_msg_api_alloc (sizeof (*bmp));
325 clib_memset (bmp, 0, sizeof (*bmp));
327 bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_DETACH);
328 bmp->client_index = utm->my_client_index;
329 bmp->context = ntohl (0xfeedface);
330 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
334 vl_api_application_attach_reply_t_handler (vl_api_application_attach_reply_t *
337 svm_fifo_segment_create_args_t _a = { 0 }, *a = &_a;
338 udp_echo_main_t *utm = &udp_echo_main;
339 svm_fifo_segment_main_t *sm = &utm->segment_main;
344 clib_warning ("attach failed: %d", mp->retval);
345 utm->state = STATE_FAILED;
349 if (mp->segment_name_length == 0)
351 clib_warning ("segment_name_length zero");
355 a->segment_name = (char *) mp->segment_name;
356 a->segment_size = mp->segment_size;
358 ASSERT (mp->app_event_queue_address);
360 /* Attach to the segment vpp created */
361 rv = svm_fifo_segment_attach (sm, a);
364 clib_warning ("svm_fifo_segment_attach ('%s') failed",
369 utm->our_event_queue = uword_to_pointer (mp->app_event_queue_address,
371 utm->state = STATE_ATTACHED;
375 vl_api_application_detach_reply_t_handler (vl_api_application_detach_reply_t *
379 clib_warning ("detach returned with err: %d", mp->retval);
380 udp_echo_main.state = STATE_DETACHED;
384 format_api_error (u8 * s, va_list * args)
386 udp_echo_main_t *utm = va_arg (*args, udp_echo_main_t *);
387 i32 error = va_arg (*args, u32);
390 p = hash_get (utm->error_string_by_error_number, -error);
393 s = format (s, "%s", p[0]);
395 s = format (s, "%d", error);
400 wait_for_state_change (udp_echo_main_t * utm, connection_state_t state)
403 #define TIMEOUT 600.0
405 #define TIMEOUT 600.0
408 f64 timeout = clib_time_now (&utm->clib_time) + TIMEOUT;
410 while (clib_time_now (&utm->clib_time) < timeout)
412 if (utm->state == state)
414 if (utm->state == STATE_FAILED)
420 u64 server_bytes_received, server_bytes_sent;
423 cut_through_thread_fn (void *arg)
428 u8 *my_copy_buffer = 0;
429 udp_echo_main_t *utm = &udp_echo_main;
431 int rv, do_dequeue = 0;
434 while (utm->cut_through_session_index == ~0)
437 s = pool_elt_at_index (utm->sessions, utm->cut_through_session_index);
439 rx_fifo = s->rx_fifo;
440 tx_fifo = s->tx_fifo;
442 vec_validate (my_copy_buffer, 64 * 1024 - 1);
448 /* We read from the tx fifo and write to the rx fifo */
449 if (utm->have_return || do_dequeue)
450 actual_transfer = svm_fifo_dequeue_nowait (rx_fifo,
456 /* We don't do anything with the data, drop it */
457 actual_transfer = svm_fifo_max_dequeue (rx_fifo);
458 svm_fifo_dequeue_drop (rx_fifo, actual_transfer);
461 while (actual_transfer <= 0);
463 server_bytes_received += actual_transfer;
465 if (utm->have_return)
468 while (actual_transfer > 0)
470 rv = svm_fifo_enqueue_nowait (tx_fifo, actual_transfer,
471 my_copy_buffer + buffer_offset);
474 actual_transfer -= rv;
476 server_bytes_sent += rv;
481 if (PREDICT_FALSE (utm->time_to_stop))
489 session_accepted_handler (session_accepted_msg_t * mp)
491 app_session_evt_t _app_evt, *app_evt = &_app_evt;
492 udp_echo_main_t *utm = &udp_echo_main;
493 session_accepted_reply_msg_t *rmp;
494 svm_fifo_t *rx_fifo, *tx_fifo;
495 app_session_t *session;
496 static f64 start_time;
500 if (start_time == 0.0)
501 start_time = clib_time_now (&utm->clib_time);
503 utm->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address,
505 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
506 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
508 pool_get (utm->sessions, session);
509 clib_memset (session, 0, sizeof (*session));
510 session_index = session - utm->sessions;
511 session->session_index = session_index;
513 rx_fifo->client_session_index = session_index;
514 tx_fifo->client_session_index = session_index;
515 session->rx_fifo = rx_fifo;
516 session->tx_fifo = tx_fifo;
517 clib_memcpy_fast (&session->transport.rmt_ip, mp->ip,
518 sizeof (ip46_address_t));
519 session->transport.is_ip4 = mp->is_ip4;
520 session->transport.rmt_port = mp->port;
522 hash_set (utm->session_index_by_vpp_handles, mp->handle, session_index);
523 if (pool_elts (utm->sessions) && (pool_elts (utm->sessions) % 20000) == 0)
525 f64 now = clib_time_now (&utm->clib_time);
526 fformat (stdout, "%d active sessions in %.2f seconds, %.2f/sec...\n",
527 pool_elts (utm->sessions), now - start_time,
528 (f64) pool_elts (utm->sessions) / (now - start_time));
531 app_alloc_ctrl_evt_to_vpp (utm->vpp_event_queue, app_evt,
532 SESSION_CTRL_EVT_ACCEPTED_REPLY);
533 rmp = (session_accepted_reply_msg_t *) app_evt->evt->data;
534 rmp->handle = mp->handle;
535 rmp->context = mp->context;
537 app_send_ctrl_evt_to_vpp (utm->vpp_event_queue, app_evt);
539 CLIB_MEMORY_BARRIER ();
540 utm->state = STATE_READY;
544 session_disconnected_handler (session_disconnected_msg_t * mp)
546 app_session_evt_t _app_evt, *app_evt = &_app_evt;
547 udp_echo_main_t *utm = &udp_echo_main;
548 session_disconnected_reply_msg_t *rmp;
549 app_session_t *session;
553 p = hash_get (utm->session_index_by_vpp_handles, mp->handle);
557 session = pool_elt_at_index (utm->sessions, p[0]);
558 hash_unset (utm->session_index_by_vpp_handles, mp->handle);
559 clib_warning ("disconnecting %u", session->session_index);
560 pool_put (utm->sessions, session);
564 clib_warning ("couldn't find session key %llx", mp->handle);
568 app_alloc_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt,
569 SESSION_CTRL_EVT_DISCONNECTED_REPLY);
570 rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
572 rmp->handle = mp->handle;
573 rmp->context = mp->context;
574 app_send_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt);
578 session_connected_handler (session_connected_msg_t * mp)
580 udp_echo_main_t *utm = &udp_echo_main;
581 unformat_input_t _input, *input = &_input;
582 session_endpoint_cfg_t _sep, *sep = &_sep;
583 app_session_t *session;
585 ASSERT (utm->i_am_server == 0);
589 clib_warning ("failed connect");
593 ASSERT (mp->server_rx_fifo && mp->server_tx_fifo);
595 pool_get (utm->sessions, session);
596 session->session_index = session - utm->sessions;
597 session->rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
598 session->tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
600 /* Cut-through case */
603 clib_warning ("cut-through session");
604 session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
606 utm->cut_through_session_index = session->session_index;
607 session->is_dgram = 0;
609 session->rx_fifo->client_session_index = session->session_index;
610 session->tx_fifo->client_session_index = session->session_index;
611 /* TODO use ct fifos */
615 utm->connected_session = session->session_index;
616 utm->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address,
619 session->rx_fifo->client_session_index = session->session_index;
620 session->tx_fifo->client_session_index = session->session_index;
621 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
622 sizeof (ip46_address_t));
623 session->transport.is_ip4 = mp->is_ip4;
624 session->transport.lcl_port = mp->lcl_port;
626 unformat_init_vector (input, utm->connect_uri);
627 if (!unformat (input, "%U", unformat_uri, sep))
629 clib_warning ("can't figure out remote ip and port");
630 utm->state = STATE_FAILED;
631 unformat_free (input);
634 unformat_free (input);
635 clib_memcpy_fast (&session->transport.rmt_ip, &sep->ip,
636 sizeof (ip46_address_t));
637 session->transport.rmt_port = sep->port;
638 session->is_dgram = !utm->is_connected;
640 utm->state = STATE_READY;
644 session_bound_handler (session_bound_msg_t * mp)
646 udp_echo_main_t *utm = &udp_echo_main;
647 svm_fifo_t *rx_fifo, *tx_fifo;
648 app_session_t *session;
653 clib_warning ("bind failed: %d", mp->retval);
654 utm->state = STATE_FAILED;
658 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
659 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
661 pool_get (utm->sessions, session);
662 clib_memset (session, 0, sizeof (*session));
663 session_index = session - utm->sessions;
665 rx_fifo->client_session_index = session_index;
666 tx_fifo->client_session_index = session_index;
667 session->rx_fifo = rx_fifo;
668 session->tx_fifo = tx_fifo;
669 clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
670 sizeof (ip46_address_t));
671 session->transport.is_ip4 = mp->lcl_is_ip4;
672 session->transport.lcl_port = mp->lcl_port;
673 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
675 utm->state = utm->is_connected ? STATE_BOUND : STATE_READY;
679 handle_mq_event (session_event_t * e)
681 switch (e->event_type)
683 case SESSION_CTRL_EVT_BOUND:
684 session_bound_handler ((session_bound_msg_t *) e->data);
686 case SESSION_CTRL_EVT_ACCEPTED:
687 session_accepted_handler ((session_accepted_msg_t *) e->data);
689 case SESSION_CTRL_EVT_CONNECTED:
690 session_connected_handler ((session_connected_msg_t *) e->data);
692 case SESSION_CTRL_EVT_DISCONNECTED:
693 session_disconnected_handler ((session_disconnected_msg_t *) e->data);
696 clib_warning ("unhandled %u", e->event_type);
701 udp_client_send_connect (udp_echo_main_t * utm)
703 vl_api_connect_uri_t *cmp;
704 cmp = vl_msg_api_alloc (sizeof (*cmp));
705 clib_memset (cmp, 0, sizeof (*cmp));
707 cmp->_vl_msg_id = ntohs (VL_API_CONNECT_URI);
708 cmp->client_index = utm->my_client_index;
709 cmp->context = ntohl (0xfeedface);
710 memcpy (cmp->uri, utm->connect_uri, vec_len (utm->connect_uri));
711 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & cmp);
715 send_test_chunk (udp_echo_main_t * utm, app_session_t * s, u32 bytes)
717 u64 test_buf_len, bytes_this_chunk, test_buf_offset;
719 u8 *test_data = utm->connect_test_data;
720 u32 bytes_to_snd, enq_space, min_chunk;
723 test_buf_len = vec_len (test_data);
724 test_buf_offset = utm->bytes_sent % test_buf_len;
725 bytes_this_chunk = clib_min (test_buf_len - test_buf_offset,
727 enq_space = svm_fifo_max_enqueue (s->tx_fifo);
728 bytes_this_chunk = clib_min (bytes_this_chunk, enq_space);
730 written = app_send (s, test_data + test_buf_offset, bytes_this_chunk,
734 utm->bytes_to_send -= written;
735 utm->bytes_sent += written;
740 recv_test_chunk (udp_echo_main_t * utm, app_session_t * s)
742 app_recv (s, utm->rx_buf, vec_len (utm->rx_buf));
746 client_send_data (udp_echo_main_t * utm, u32 session_index)
748 f64 start_time, end_time, delta;
749 app_session_t *session;
754 vec_validate_aligned (utm->connect_test_data, 1024 * 1024 - 1,
755 CLIB_CACHE_LINE_BYTES);
756 for (i = 0; i < vec_len (utm->connect_test_data); i++)
757 utm->connect_test_data[i] = i & 0xff;
759 test_data = utm->connect_test_data;
760 session = pool_elt_at_index (utm->sessions, session_index);
761 ASSERT (vec_len (test_data) > 0);
763 utm->total_to_send = utm->bytes_to_send;
764 vec_validate (utm->rx_buf, vec_len (test_data) - 1);
765 start_time = clib_time_now (&utm->clib_time);
766 while (!utm->time_to_stop && utm->bytes_to_send)
768 send_test_chunk (utm, session, 0);
769 if (utm->have_return)
770 recv_test_chunk (utm, session);
771 if (utm->time_to_stop)
775 if (utm->have_return)
777 f64 timeout = clib_time_now (&utm->clib_time) + 5;
778 while (clib_time_now (&utm->clib_time) < timeout)
779 recv_test_chunk (utm, session);
782 end_time = clib_time_now (&utm->clib_time);
783 delta = end_time - start_time;
784 transfer_type = utm->have_return ? "full-duplex" : "half-duplex";
785 clib_warning ("%lld bytes (%lld mbytes, %lld gbytes) in %.2f seconds",
786 utm->total_to_send, utm->total_to_send / (1ULL << 20),
787 utm->total_to_send / (1ULL << 30), delta);
788 clib_warning ("%.2f bytes/second %s", ((f64) utm->total_to_send) / (delta),
790 clib_warning ("%.4f gbit/second %s",
791 (((f64) utm->total_to_send * 8.0) / delta / 1e9),
796 application_attach (udp_echo_main_t * utm)
798 application_send_attach (utm);
799 if (wait_for_state_change (utm, STATE_ATTACHED))
801 clib_warning ("timeout waiting for STATE_ATTACHED");
808 client_test (udp_echo_main_t * utm)
810 f64 start_time, timeout = 100.0;
811 app_session_t *session;
815 if (application_attach (utm))
818 udp_client_send_connect (utm);
820 start_time = clib_time_now (&utm->clib_time);
821 while (pool_elts (utm->sessions) != 1 && utm->state != STATE_FAILED)
823 svm_msg_q_sub (utm->our_event_queue, &msg, SVM_Q_WAIT, 0);
824 e = svm_msg_q_msg_data (utm->our_event_queue, &msg);
826 svm_msg_q_free_msg (utm->our_event_queue, &msg);
828 if (clib_time_now (&utm->clib_time) - start_time >= timeout)
832 if (utm->cut_through_session_index != ~0)
833 client_send_data (utm, utm->cut_through_session_index);
835 client_send_data (utm, utm->connected_session);
837 application_detach (utm);
838 wait_for_state_change (utm, STATE_DETACHED);
842 vl_api_map_another_segment_t_handler (vl_api_map_another_segment_t * mp)
844 svm_fifo_segment_create_args_t _a, *a = &_a;
845 udp_echo_main_t *utm = &udp_echo_main;
846 svm_fifo_segment_main_t *sm = &utm->segment_main;
847 svm_fifo_segment_private_t *seg;
850 clib_memset (a, 0, sizeof (*a));
851 a->segment_name = (char *) mp->segment_name;
852 a->segment_size = mp->segment_size;
853 /* Attach to the segment vpp created */
854 rv = svm_fifo_segment_attach (sm, a);
857 clib_warning ("svm_fifo_segment_attach ('%s') failed",
861 seg = svm_fifo_segment_get_segment (sm, a->new_segment_indices[0]);
862 clib_warning ("Mapped new segment '%s' size %d", seg->ssvm.name,
863 seg->ssvm.ssvm_size);
864 hash_set (utm->segments_table, clib_net_to_host_u64 (mp->segment_handle),
865 a->new_segment_indices[0]);
869 vl_api_unmap_segment_t_handler (vl_api_unmap_segment_t * mp)
871 udp_echo_main_t *utm = &udp_echo_main;
872 svm_fifo_segment_main_t *sm = &utm->segment_main;
873 svm_fifo_segment_private_t *seg;
877 segment_handle = clib_net_to_host_u64 (mp->segment_handle);
878 seg_indexp = hash_get (utm->segments_table, segment_handle);
881 clib_warning ("segment not mapped: %s", segment_handle);
884 hash_unset (utm->segments_table, segment_handle);
885 seg = svm_fifo_segment_get_segment (sm, (u32) seg_indexp[0]);
886 svm_fifo_segment_delete (sm, seg);
887 clib_warning ("Unmapped segment '%s'", segment_handle);
891 vl_api_unbind_uri_reply_t_handler (vl_api_unbind_uri_reply_t * mp)
893 udp_echo_main_t *utm = &udp_echo_main;
896 clib_warning ("returned %d", ntohl (mp->retval));
898 utm->state = STATE_START;
902 vl_api_app_cut_through_registration_add_t_handler
903 (vl_api_app_cut_through_registration_add_t * mp)
908 #define foreach_tcp_echo_msg \
909 _(UNBIND_URI_REPLY, unbind_uri_reply) \
910 _(MAP_ANOTHER_SEGMENT, map_another_segment) \
911 _(UNMAP_SEGMENT, unmap_segment) \
912 _(APPLICATION_ATTACH_REPLY, application_attach_reply) \
913 _(APPLICATION_DETACH_REPLY, application_detach_reply) \
914 _(APP_CUT_THROUGH_REGISTRATION_ADD, app_cut_through_registration_add) \
917 tcp_echo_api_hookup (udp_echo_main_t * utm)
920 vl_msg_api_set_handlers(VL_API_##N, #n, \
921 vl_api_##n##_t_handler, \
923 vl_api_##n##_t_endian, \
924 vl_api_##n##_t_print, \
925 sizeof(vl_api_##n##_t), 1);
926 foreach_tcp_echo_msg;
932 connect_to_vpp (char *name)
934 udp_echo_main_t *utm = &udp_echo_main;
935 api_main_t *am = &api_main;
937 if (vl_client_connect_to_vlib ("/vpe-api", name, 32) < 0)
940 utm->vl_input_queue = am->shmem_hdr->vl_input_queue;
941 utm->my_client_index = am->my_client_index;
947 vlib_cli_output (struct vlib_main_t *vm, char *fmt, ...)
949 clib_warning ("BUG");
953 init_error_string_table (udp_echo_main_t * utm)
955 utm->error_string_by_error_number = hash_create (0, sizeof (uword));
957 #define _(n,v,s) hash_set (utm->error_string_by_error_number, -v, s);
958 foreach_vnet_api_error;
961 hash_set (utm->error_string_by_error_number, 99, "Misc");
965 server_handle_fifo_event_rx (udp_echo_main_t * utm, u32 session_index)
967 svm_fifo_t *rx_fifo, *tx_fifo;
969 app_session_t *session;
971 u32 max_dequeue, offset, max_transfer, rx_buf_len;
973 session = pool_elt_at_index (utm->sessions, session_index);
974 rx_buf_len = vec_len (utm->rx_buf);
975 rx_fifo = session->rx_fifo;
976 tx_fifo = session->tx_fifo;
978 max_dequeue = svm_fifo_max_dequeue (rx_fifo);
979 /* Allow enqueuing of a new event */
980 svm_fifo_unset_event (rx_fifo);
982 if (PREDICT_FALSE (!max_dequeue))
985 /* Read the max_dequeue */
988 max_transfer = clib_min (rx_buf_len, max_dequeue);
989 if (session->is_dgram)
990 n_read = app_recv_dgram_raw (rx_fifo, utm->rx_buf, max_transfer,
991 &session->transport, 0, 0);
993 n_read = app_recv_stream_raw (rx_fifo, utm->rx_buf, max_transfer, 0,
997 max_dequeue -= n_read;
999 /* Reflect if a non-drop session */
1000 if (utm->have_return && n_read > 0)
1005 rv = app_send (session, &utm->rx_buf[offset], n_read,
1013 while ((rv <= 0 || n_read > 0) && !utm->time_to_stop);
1015 /* If event wasn't set, add one */
1016 if (svm_fifo_set_event (tx_fifo))
1017 app_send_io_evt_to_vpp (session->vpp_evt_q,
1018 tx_fifo->master_session_index,
1019 SESSION_IO_EVT_TX, SVM_Q_WAIT);
1022 while ((n_read < 0 || max_dequeue > 0) && !utm->time_to_stop);
1026 server_handle_event_queue (udp_echo_main_t * utm)
1029 svm_msg_q_msg_t msg;
1030 svm_msg_q_t *mq = utm->our_event_queue;
1033 while (utm->state != STATE_READY)
1038 if (svm_msg_q_sub (mq, &msg, SVM_Q_WAIT, 0))
1040 clib_warning ("svm msg q returned");
1043 e = svm_msg_q_msg_data (mq, &msg);
1044 switch (e->event_type)
1046 case SESSION_IO_EVT_RX:
1047 server_handle_fifo_event_rx (utm, e->session_index);
1051 handle_mq_event (e);
1054 svm_msg_q_free_msg (mq, &msg);
1055 if (PREDICT_FALSE (utm->time_to_stop == 1))
1057 if (PREDICT_FALSE (utm->time_to_print_stats == 1))
1059 utm->time_to_print_stats = 0;
1060 fformat (stdout, "%d connections\n", pool_elts (utm->sessions));
1066 server_unbind (udp_echo_main_t * utm)
1068 vl_api_unbind_uri_t *ump;
1070 ump = vl_msg_api_alloc (sizeof (*ump));
1071 clib_memset (ump, 0, sizeof (*ump));
1073 ump->_vl_msg_id = ntohs (VL_API_UNBIND_URI);
1074 ump->client_index = utm->my_client_index;
1075 memcpy (ump->uri, utm->listen_uri, vec_len (utm->listen_uri));
1076 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & ump);
1080 server_bind (udp_echo_main_t * utm)
1082 vl_api_bind_uri_t *bmp;
1084 bmp = vl_msg_api_alloc (sizeof (*bmp));
1085 clib_memset (bmp, 0, sizeof (*bmp));
1087 bmp->_vl_msg_id = ntohs (VL_API_BIND_URI);
1088 bmp->client_index = utm->my_client_index;
1089 bmp->context = ntohl (0xfeedface);
1090 memcpy (bmp->uri, utm->listen_uri, vec_len (utm->listen_uri));
1091 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
1095 udp_server_test (udp_echo_main_t * utm)
1097 u8 wait_for_state = utm->is_connected ? STATE_BOUND : STATE_READY;
1098 application_send_attach (utm);
1103 if (wait_for_state_change (utm, wait_for_state))
1105 clib_warning ("timeout waiting for state change");
1109 server_handle_event_queue (utm);
1112 server_unbind (utm);
1114 if (wait_for_state_change (utm, STATE_START))
1116 clib_warning ("timeout waiting for STATE_START");
1120 application_detach (utm);
1122 fformat (stdout, "Test complete...\n");
1126 main (int argc, char **argv)
1128 udp_echo_main_t *utm = &udp_echo_main;
1129 svm_fifo_segment_main_t *sm = &utm->segment_main;
1130 u8 *uri = (u8 *) "udp://6.0.1.1/1234";
1131 unformat_input_t _argv, *a = &_argv;
1132 int i_am_server = 1;
1133 app_session_t *session;
1139 clib_mem_init_thread_safe (0, 256 << 20);
1141 svm_fifo_segment_main_init (sm, HIGH_SEGMENT_BASEVA, 20);
1143 vec_validate (utm->rx_buf, 128 << 10);
1144 utm->session_index_by_vpp_handles = hash_create (0, sizeof (uword));
1145 utm->my_pid = getpid ();
1146 utm->configured_segment_size = 1 << 20;
1147 utm->have_return = 1;
1148 utm->bytes_to_send = 1024;
1149 utm->fifo_size = 128 << 10;
1150 utm->cut_through_session_index = ~0;
1151 clib_time_init (&utm->clib_time);
1153 init_error_string_table (utm);
1154 unformat_init_command_line (a, argv);
1156 while (unformat_check_input (a) != UNFORMAT_END_OF_INPUT)
1158 if (unformat (a, "chroot prefix %s", &chroot_prefix))
1160 vl_set_memory_root_path ((char *) chroot_prefix);
1162 else if (unformat (a, "uri %s", &uri))
1164 else if (unformat (a, "segment-size %dM", &tmp))
1165 utm->configured_segment_size = tmp << 20;
1166 else if (unformat (a, "segment-size %dG", &tmp))
1167 utm->configured_segment_size = tmp << 30;
1168 else if (unformat (a, "server"))
1170 else if (unformat (a, "client"))
1172 else if (unformat (a, "no-return"))
1173 utm->have_return = 0;
1174 else if (unformat (a, "mbytes %d", &tmp))
1175 utm->bytes_to_send = (u64) tmp << 20;
1176 else if (unformat (a, "fifo-size %d", &tmp))
1177 utm->fifo_size = tmp << 10;
1180 fformat (stderr, "%s: usage [server|client]\n");
1185 utm->i_am_server = i_am_server;
1187 setup_signal_handlers ();
1188 tcp_echo_api_hookup (utm);
1192 utm->listen_uri = format (0, "%s%c", uri, 0);
1193 utm->is_connected = (utm->listen_uri[4] == 'c');
1194 app_name = "udp_echo_server";
1198 app_name = "udp_echo_client";
1199 utm->connect_uri = format (0, "%s%c", uri, 0);
1200 utm->is_connected = (utm->connect_uri[4] == 'c');
1202 if (connect_to_vpp (app_name) < 0)
1205 fformat (stderr, "Couldn't connect to vpe, exiting...\n");
1209 if (i_am_server == 0)
1215 /* $$$$ hack preallocation */
1216 for (i = 0; i < 200000; i++)
1218 pool_get (utm->sessions, session);
1219 clib_memset (session, 0, sizeof (*session));
1221 for (i = 0; i < 200000; i++)
1222 pool_put_index (utm->sessions, i);
1224 udp_server_test (utm);
1227 vl_client_disconnect_from_vlib ();
1231 #undef vl_api_version
1232 #define vl_api_version(n,v) static u32 vpe_api_version = v;
1233 #include <vpp/api/vpe.api.h>
1234 #undef vl_api_version
1237 vl_client_add_api_signatures (vl_api_memclnt_create_t * mp)
1240 * Send the main API signature in slot 0. This bit of code must
1241 * match the checks in ../vpe/api/api.c: vl_msg_api_version_check().
1243 mp->api_versions[0] = clib_host_to_net_u32 (vpe_api_version);
1253 * fd.io coding-style-patch-verification: ON
1256 * eval: (c-set-style "gnu")