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;
125 svm_fifo_segment_main_t *segment_main;
127 u8 *connect_test_data;
129 uword *segments_table;
137 udp_echo_main_t udp_echo_main;
140 stop_signal (int signum)
142 udp_echo_main_t *um = &udp_echo_main;
144 um->time_to_stop = 1;
148 stats_signal (int signum)
150 udp_echo_main_t *um = &udp_echo_main;
151 um->time_to_print_stats = 1;
154 static clib_error_t *
155 setup_signal_handlers (void)
157 signal (SIGINT, stats_signal);
158 signal (SIGQUIT, stop_signal);
159 signal (SIGTERM, stop_signal);
165 unformat_ip4_address (unformat_input_t * input, va_list * args)
167 u8 *result = va_arg (*args, u8 *);
170 if (!unformat (input, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]))
173 if (a[0] >= 256 || a[1] >= 256 || a[2] >= 256 || a[3] >= 256)
185 unformat_ip6_address (unformat_input_t * input, va_list * args)
187 ip6_address_t *result = va_arg (*args, ip6_address_t *);
189 uword hex_quad, n_hex_quads, hex_digit, n_hex_digits;
190 uword c, n_colon, double_colon_index;
192 n_hex_quads = hex_quad = n_hex_digits = n_colon = 0;
193 double_colon_index = ARRAY_LEN (hex_quads);
194 while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT)
197 if (c >= '0' && c <= '9')
199 else if (c >= 'a' && c <= 'f')
200 hex_digit = c + 10 - 'a';
201 else if (c >= 'A' && c <= 'F')
202 hex_digit = c + 10 - 'A';
203 else if (c == ':' && n_colon < 2)
207 unformat_put_input (input);
211 /* Too many hex quads. */
212 if (n_hex_quads >= ARRAY_LEN (hex_quads))
217 hex_quad = (hex_quad << 4) | hex_digit;
219 /* Hex quad must fit in 16 bits. */
220 if (n_hex_digits >= 4)
227 /* Save position of :: */
230 /* More than one :: ? */
231 if (double_colon_index < ARRAY_LEN (hex_quads))
233 double_colon_index = n_hex_quads;
236 if (n_colon > 0 && n_hex_digits > 0)
238 hex_quads[n_hex_quads++] = hex_quad;
244 if (n_hex_digits > 0)
245 hex_quads[n_hex_quads++] = hex_quad;
250 /* Expand :: to appropriate number of zero hex quads. */
251 if (double_colon_index < ARRAY_LEN (hex_quads))
253 word n_zero = ARRAY_LEN (hex_quads) - n_hex_quads;
255 for (i = n_hex_quads - 1; i >= (signed) double_colon_index; i--)
256 hex_quads[n_zero + i] = hex_quads[i];
258 for (i = 0; i < n_zero; i++)
259 hex_quads[double_colon_index + i] = 0;
261 n_hex_quads = ARRAY_LEN (hex_quads);
264 /* Too few hex quads given. */
265 if (n_hex_quads < ARRAY_LEN (hex_quads))
268 for (i = 0; i < ARRAY_LEN (hex_quads); i++)
269 result->as_u16[i] = clib_host_to_net_u16 (hex_quads[i]);
276 unformat_uri (unformat_input_t * input, va_list * args)
278 session_endpoint_extended_t *sep = va_arg (*args,
279 session_endpoint_extended_t *);
283 if (unformat (input, "%s://%U/%d", &tmp, unformat_ip4_address, &sep->ip.ip4,
286 sep->port = clib_host_to_net_u16 (port);
290 else if (unformat (input, "%s://%U/%d", &tmp, unformat_ip6_address,
291 &sep->ip.ip6, &port))
293 sep->port = clib_host_to_net_u16 (port);
301 application_send_attach (udp_echo_main_t * utm)
303 vl_api_application_attach_t *bmp;
304 bmp = vl_msg_api_alloc (sizeof (*bmp));
305 clib_memset (bmp, 0, sizeof (*bmp));
307 bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_ATTACH);
308 bmp->client_index = utm->my_client_index;
309 bmp->context = ntohl (0xfeedface);
310 bmp->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_ADD_SEGMENT;
311 bmp->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
312 bmp->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE;
313 bmp->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_MQ_FOR_CTRL_MSGS;
314 bmp->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = 2;
315 bmp->options[APP_OPTIONS_RX_FIFO_SIZE] = utm->fifo_size;
316 bmp->options[APP_OPTIONS_TX_FIFO_SIZE] = utm->fifo_size;
317 bmp->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = 128 << 20;
318 bmp->options[APP_OPTIONS_SEGMENT_SIZE] = 256 << 20;
319 bmp->options[APP_OPTIONS_EVT_QUEUE_SIZE] = 16768;
320 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
324 application_detach (udp_echo_main_t * utm)
326 vl_api_application_detach_t *bmp;
327 bmp = vl_msg_api_alloc (sizeof (*bmp));
328 clib_memset (bmp, 0, sizeof (*bmp));
330 bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_DETACH);
331 bmp->client_index = utm->my_client_index;
332 bmp->context = ntohl (0xfeedface);
333 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
337 vl_api_application_attach_reply_t_handler (vl_api_application_attach_reply_t *
340 udp_echo_main_t *utm = &udp_echo_main;
341 svm_fifo_segment_create_args_t _a = { 0 }, *a = &_a;
346 clib_warning ("attach failed: %d", mp->retval);
347 utm->state = STATE_FAILED;
351 if (mp->segment_name_length == 0)
353 clib_warning ("segment_name_length zero");
357 a->segment_name = (char *) mp->segment_name;
358 a->segment_size = mp->segment_size;
360 ASSERT (mp->app_event_queue_address);
362 /* Attach to the segment vpp created */
363 rv = svm_fifo_segment_attach (a);
366 clib_warning ("svm_fifo_segment_attach ('%s') failed",
371 utm->our_event_queue = uword_to_pointer (mp->app_event_queue_address,
373 utm->state = STATE_ATTACHED;
377 vl_api_application_detach_reply_t_handler (vl_api_application_detach_reply_t *
381 clib_warning ("detach returned with err: %d", mp->retval);
382 udp_echo_main.state = STATE_DETACHED;
386 format_api_error (u8 * s, va_list * args)
388 udp_echo_main_t *utm = va_arg (*args, udp_echo_main_t *);
389 i32 error = va_arg (*args, u32);
392 p = hash_get (utm->error_string_by_error_number, -error);
395 s = format (s, "%s", p[0]);
397 s = format (s, "%d", error);
402 wait_for_state_change (udp_echo_main_t * utm, connection_state_t state)
405 #define TIMEOUT 600.0
407 #define TIMEOUT 600.0
410 f64 timeout = clib_time_now (&utm->clib_time) + TIMEOUT;
412 while (clib_time_now (&utm->clib_time) < timeout)
414 if (utm->state == state)
416 if (utm->state == STATE_FAILED)
422 u64 server_bytes_received, server_bytes_sent;
425 cut_through_thread_fn (void *arg)
430 u8 *my_copy_buffer = 0;
431 udp_echo_main_t *utm = &udp_echo_main;
433 int rv, do_dequeue = 0;
436 while (utm->cut_through_session_index == ~0)
439 s = pool_elt_at_index (utm->sessions, utm->cut_through_session_index);
441 rx_fifo = s->rx_fifo;
442 tx_fifo = s->tx_fifo;
444 vec_validate (my_copy_buffer, 64 * 1024 - 1);
450 /* We read from the tx fifo and write to the rx fifo */
451 if (utm->have_return || do_dequeue)
452 actual_transfer = svm_fifo_dequeue_nowait (rx_fifo,
458 /* We don't do anything with the data, drop it */
459 actual_transfer = svm_fifo_max_dequeue (rx_fifo);
460 svm_fifo_dequeue_drop (rx_fifo, actual_transfer);
463 while (actual_transfer <= 0);
465 server_bytes_received += actual_transfer;
467 if (utm->have_return)
470 while (actual_transfer > 0)
472 rv = svm_fifo_enqueue_nowait (tx_fifo, actual_transfer,
473 my_copy_buffer + buffer_offset);
476 actual_transfer -= rv;
478 server_bytes_sent += rv;
483 if (PREDICT_FALSE (utm->time_to_stop))
491 session_accepted_handler (session_accepted_msg_t * mp)
493 app_session_evt_t _app_evt, *app_evt = &_app_evt;
494 udp_echo_main_t *utm = &udp_echo_main;
495 session_accepted_reply_msg_t *rmp;
496 svm_fifo_t *rx_fifo, *tx_fifo;
497 app_session_t *session;
498 static f64 start_time;
502 if (start_time == 0.0)
503 start_time = clib_time_now (&utm->clib_time);
505 utm->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address,
507 rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
508 tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
510 pool_get (utm->sessions, session);
511 clib_memset (session, 0, sizeof (*session));
512 session_index = session - utm->sessions;
513 session->session_index = session_index;
515 /* Cut-through case */
516 if (mp->server_event_queue_address)
518 clib_warning ("cut-through session");
519 session->vpp_evt_q = uword_to_pointer (mp->client_event_queue_address,
522 rx_fifo->master_session_index = session_index;
523 tx_fifo->master_session_index = session_index;
524 utm->cut_through_session_index = session_index;
525 session->rx_fifo = rx_fifo;
526 session->tx_fifo = tx_fifo;
527 session->is_dgram = 0;
529 rv = pthread_create (&utm->cut_through_thread_handle,
530 NULL /*attr */ , cut_through_thread_fn, 0);
533 clib_warning ("pthread_create returned %d", rv);
534 rv = VNET_API_ERROR_SYSCALL_ERROR_1;
539 rx_fifo->client_session_index = session_index;
540 tx_fifo->client_session_index = session_index;
541 session->rx_fifo = rx_fifo;
542 session->tx_fifo = tx_fifo;
543 clib_memcpy (&session->transport.rmt_ip, mp->ip,
544 sizeof (ip46_address_t));
545 session->transport.is_ip4 = mp->is_ip4;
546 session->transport.rmt_port = mp->port;
549 hash_set (utm->session_index_by_vpp_handles, mp->handle, session_index);
550 if (pool_elts (utm->sessions) && (pool_elts (utm->sessions) % 20000) == 0)
552 f64 now = clib_time_now (&utm->clib_time);
553 fformat (stdout, "%d active sessions in %.2f seconds, %.2f/sec...\n",
554 pool_elts (utm->sessions), now - start_time,
555 (f64) pool_elts (utm->sessions) / (now - start_time));
558 app_alloc_ctrl_evt_to_vpp (utm->vpp_event_queue, app_evt,
559 SESSION_CTRL_EVT_ACCEPTED_REPLY);
560 rmp = (session_accepted_reply_msg_t *) app_evt->evt->data;
561 rmp->handle = mp->handle;
562 rmp->context = mp->context;
564 app_send_ctrl_evt_to_vpp (utm->vpp_event_queue, app_evt);
566 CLIB_MEMORY_BARRIER ();
567 utm->state = STATE_READY;
571 session_disconnected_handler (session_disconnected_msg_t * mp)
573 app_session_evt_t _app_evt, *app_evt = &_app_evt;
574 udp_echo_main_t *utm = &udp_echo_main;
575 session_disconnected_reply_msg_t *rmp;
576 app_session_t *session;
580 p = hash_get (utm->session_index_by_vpp_handles, mp->handle);
584 session = pool_elt_at_index (utm->sessions, p[0]);
585 hash_unset (utm->session_index_by_vpp_handles, mp->handle);
586 clib_warning ("disconnecting %u", session->session_index);
587 pool_put (utm->sessions, session);
591 clib_warning ("couldn't find session key %llx", mp->handle);
595 app_alloc_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt,
596 SESSION_CTRL_EVT_DISCONNECTED_REPLY);
597 rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
599 rmp->handle = mp->handle;
600 rmp->context = mp->context;
601 app_send_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt);
605 session_connected_handler (session_connected_msg_t * mp)
607 udp_echo_main_t *utm = &udp_echo_main;
608 unformat_input_t _input, *input = &_input;
609 session_endpoint_extended_t _sep, *sep = &_sep;
610 app_session_t *session;
612 ASSERT (utm->i_am_server == 0);
616 clib_warning ("failed connect");
620 ASSERT (mp->server_rx_fifo && mp->server_tx_fifo);
622 pool_get (utm->sessions, session);
623 session->session_index = session - utm->sessions;
624 session->rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
625 session->tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
627 /* Cut-through case */
628 if (mp->client_event_queue_address)
630 clib_warning ("cut-through session");
631 session->vpp_evt_q = uword_to_pointer (mp->server_event_queue_address,
633 utm->ct_event_queue = uword_to_pointer (mp->client_event_queue_address,
635 utm->cut_through_session_index = session->session_index;
636 session->is_dgram = 0;
638 session->rx_fifo->client_session_index = session->session_index;
639 session->tx_fifo->client_session_index = session->session_index;
643 utm->connected_session = session->session_index;
644 utm->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address,
647 session->rx_fifo->client_session_index = session->session_index;
648 session->tx_fifo->client_session_index = session->session_index;
649 clib_memcpy (&session->transport.lcl_ip, mp->lcl_ip,
650 sizeof (ip46_address_t));
651 session->transport.is_ip4 = mp->is_ip4;
652 session->transport.lcl_port = mp->lcl_port;
654 unformat_init_vector (input, utm->connect_uri);
655 if (!unformat (input, "%U", unformat_uri, sep))
657 clib_warning ("can't figure out remote ip and port");
658 utm->state = STATE_FAILED;
659 unformat_free (input);
662 unformat_free (input);
663 clib_memcpy (&session->transport.rmt_ip, &sep->ip,
664 sizeof (ip46_address_t));
665 session->transport.rmt_port = sep->port;
666 session->is_dgram = !utm->is_connected;
668 utm->state = STATE_READY;
672 session_bound_handler (session_bound_msg_t * mp)
674 udp_echo_main_t *utm = &udp_echo_main;
675 svm_fifo_t *rx_fifo, *tx_fifo;
676 app_session_t *session;
681 clib_warning ("bind failed: %d", mp->retval);
682 utm->state = STATE_FAILED;
686 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
687 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
689 pool_get (utm->sessions, session);
690 clib_memset (session, 0, sizeof (*session));
691 session_index = session - utm->sessions;
693 rx_fifo->client_session_index = session_index;
694 tx_fifo->client_session_index = session_index;
695 session->rx_fifo = rx_fifo;
696 session->tx_fifo = tx_fifo;
697 clib_memcpy (&session->transport.lcl_ip, mp->lcl_ip,
698 sizeof (ip46_address_t));
699 session->transport.is_ip4 = mp->lcl_is_ip4;
700 session->transport.lcl_port = mp->lcl_port;
701 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
703 utm->state = utm->is_connected ? STATE_BOUND : STATE_READY;
707 handle_mq_event (session_event_t * e)
709 switch (e->event_type)
711 case SESSION_CTRL_EVT_BOUND:
712 session_bound_handler ((session_bound_msg_t *) e->data);
714 case SESSION_CTRL_EVT_ACCEPTED:
715 session_accepted_handler ((session_accepted_msg_t *) e->data);
717 case SESSION_CTRL_EVT_CONNECTED:
718 session_connected_handler ((session_connected_msg_t *) e->data);
720 case SESSION_CTRL_EVT_DISCONNECTED:
721 session_disconnected_handler ((session_disconnected_msg_t *) e->data);
724 clib_warning ("unhandled %u", e->event_type);
729 udp_client_send_connect (udp_echo_main_t * utm)
731 vl_api_connect_uri_t *cmp;
732 cmp = vl_msg_api_alloc (sizeof (*cmp));
733 clib_memset (cmp, 0, sizeof (*cmp));
735 cmp->_vl_msg_id = ntohs (VL_API_CONNECT_URI);
736 cmp->client_index = utm->my_client_index;
737 cmp->context = ntohl (0xfeedface);
738 memcpy (cmp->uri, utm->connect_uri, vec_len (utm->connect_uri));
739 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & cmp);
743 send_test_chunk (udp_echo_main_t * utm, app_session_t * s, u32 bytes)
745 u64 test_buf_len, bytes_this_chunk, test_buf_offset;
747 u8 *test_data = utm->connect_test_data;
748 u32 bytes_to_snd, enq_space, min_chunk;
749 session_evt_type_t et = FIFO_EVENT_APP_TX;
752 test_buf_len = vec_len (test_data);
753 test_buf_offset = utm->bytes_sent % test_buf_len;
754 bytes_this_chunk = clib_min (test_buf_len - test_buf_offset,
756 enq_space = svm_fifo_max_enqueue (s->tx_fifo);
757 bytes_this_chunk = clib_min (bytes_this_chunk, enq_space);
758 et += (s->session_index == utm->cut_through_session_index);
761 written = app_send_dgram_raw (s->tx_fifo, &s->transport, s->vpp_evt_q,
762 test_data + test_buf_offset,
763 bytes_this_chunk, et, SVM_Q_WAIT);
765 written = app_send_stream_raw (s->tx_fifo, s->vpp_evt_q,
766 test_data + test_buf_offset,
767 bytes_this_chunk, et, SVM_Q_WAIT);
771 utm->bytes_to_send -= written;
772 utm->bytes_sent += written;
777 recv_test_chunk (udp_echo_main_t * utm, app_session_t * s)
779 app_recv (s, utm->rx_buf, vec_len (utm->rx_buf));
783 client_send_data (udp_echo_main_t * utm, u32 session_index)
785 f64 start_time, end_time, delta;
786 app_session_t *session;
791 vec_validate_aligned (utm->connect_test_data, 1024 * 1024 - 1,
792 CLIB_CACHE_LINE_BYTES);
793 for (i = 0; i < vec_len (utm->connect_test_data); i++)
794 utm->connect_test_data[i] = i & 0xff;
796 test_data = utm->connect_test_data;
797 session = pool_elt_at_index (utm->sessions, session_index);
798 ASSERT (vec_len (test_data) > 0);
800 utm->total_to_send = utm->bytes_to_send;
801 vec_validate (utm->rx_buf, vec_len (test_data) - 1);
802 start_time = clib_time_now (&utm->clib_time);
803 while (!utm->time_to_stop && utm->bytes_to_send)
805 send_test_chunk (utm, session, 0);
806 if (utm->have_return)
807 recv_test_chunk (utm, session);
808 if (utm->time_to_stop)
812 if (utm->have_return)
814 f64 timeout = clib_time_now (&utm->clib_time) + 5;
815 while (clib_time_now (&utm->clib_time) < timeout)
816 recv_test_chunk (utm, session);
819 end_time = clib_time_now (&utm->clib_time);
820 delta = end_time - start_time;
821 transfer_type = utm->have_return ? "full-duplex" : "half-duplex";
822 clib_warning ("%lld bytes (%lld mbytes, %lld gbytes) in %.2f seconds",
823 utm->total_to_send, utm->total_to_send / (1ULL << 20),
824 utm->total_to_send / (1ULL << 30), delta);
825 clib_warning ("%.2f bytes/second %s", ((f64) utm->total_to_send) / (delta),
827 clib_warning ("%.4f gbit/second %s",
828 (((f64) utm->total_to_send * 8.0) / delta / 1e9),
833 application_attach (udp_echo_main_t * utm)
835 application_send_attach (utm);
836 if (wait_for_state_change (utm, STATE_ATTACHED))
838 clib_warning ("timeout waiting for STATE_ATTACHED");
845 client_test (udp_echo_main_t * utm)
847 f64 start_time, timeout = 100.0;
848 app_session_t *session;
852 if (application_attach (utm))
855 udp_client_send_connect (utm);
857 start_time = clib_time_now (&utm->clib_time);
858 while (pool_elts (utm->sessions) != 1 && utm->state != STATE_FAILED)
860 svm_msg_q_sub (utm->our_event_queue, &msg, SVM_Q_WAIT, 0);
861 e = svm_msg_q_msg_data (utm->our_event_queue, &msg);
863 svm_msg_q_free_msg (utm->our_event_queue, &msg);
865 if (clib_time_now (&utm->clib_time) - start_time >= timeout)
869 if (utm->cut_through_session_index != ~0)
870 client_send_data (utm, utm->cut_through_session_index);
872 client_send_data (utm, utm->connected_session);
874 application_detach (utm);
875 wait_for_state_change (utm, STATE_DETACHED);
879 vl_api_bind_uri_reply_t_handler (vl_api_bind_uri_reply_t * mp)
881 udp_echo_main_t *utm = &udp_echo_main;
882 svm_fifo_t *rx_fifo, *tx_fifo;
883 app_session_t *session;
888 clib_warning ("bind failed: %d", mp->retval);
889 utm->state = STATE_FAILED;
893 rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
894 tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
896 pool_get (utm->sessions, session);
897 clib_memset (session, 0, sizeof (*session));
898 session_index = session - utm->sessions;
900 rx_fifo->client_session_index = session_index;
901 tx_fifo->client_session_index = session_index;
902 session->rx_fifo = rx_fifo;
903 session->tx_fifo = tx_fifo;
904 clib_memcpy (&session->transport.lcl_ip, mp->lcl_ip,
905 sizeof (ip46_address_t));
906 session->transport.is_ip4 = mp->lcl_is_ip4;
907 session->transport.lcl_port = mp->lcl_port;
908 session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
910 utm->state = utm->is_connected ? STATE_BOUND : STATE_READY;
914 vl_api_map_another_segment_t_handler (vl_api_map_another_segment_t * mp)
916 udp_echo_main_t *utm = &udp_echo_main;
917 svm_fifo_segment_create_args_t _a, *a = &_a;
918 svm_fifo_segment_private_t *seg;
922 clib_memset (a, 0, sizeof (*a));
923 a->segment_name = (char *) mp->segment_name;
924 a->segment_size = mp->segment_size;
925 /* Attach to the segment vpp created */
926 rv = svm_fifo_segment_attach (a);
929 clib_warning ("svm_fifo_segment_attach ('%s') failed",
933 seg = svm_fifo_segment_get_segment (a->new_segment_indices[0]);
934 clib_warning ("Mapped new segment '%s' size %d", seg->ssvm.name,
935 seg->ssvm.ssvm_size);
936 seg_name = format (0, "%s", (char *) mp->segment_name);
937 hash_set_mem (utm->segments_table, seg_name, a->new_segment_indices[0]);
942 vl_api_unmap_segment_t_handler (vl_api_unmap_segment_t * mp)
944 udp_echo_main_t *utm = &udp_echo_main;
945 svm_fifo_segment_private_t *seg;
950 seg_name = format (0, "%s", mp->segment_name);
951 seg_indexp = hash_get_mem (utm->segments_table, seg_name);
954 clib_warning ("segment not mapped: %s", seg_name);
957 hash_unset_mem (utm->segments_table, seg_name);
958 seg = svm_fifo_segment_get_segment ((u32) seg_indexp[0]);
959 svm_fifo_segment_delete (seg);
960 clib_warning ("Unmapped segment '%s'", seg_name);
965 vl_api_unbind_uri_reply_t_handler (vl_api_unbind_uri_reply_t * mp)
967 udp_echo_main_t *utm = &udp_echo_main;
970 clib_warning ("returned %d", ntohl (mp->retval));
972 utm->state = STATE_START;
976 vl_api_app_cut_through_registration_add_t_handler
977 (vl_api_app_cut_through_registration_add_t * mp)
982 #define foreach_tcp_echo_msg \
983 _(BIND_URI_REPLY, bind_uri_reply) \
984 _(UNBIND_URI_REPLY, unbind_uri_reply) \
985 _(MAP_ANOTHER_SEGMENT, map_another_segment) \
986 _(UNMAP_SEGMENT, unmap_segment) \
987 _(APPLICATION_ATTACH_REPLY, application_attach_reply) \
988 _(APPLICATION_DETACH_REPLY, application_detach_reply) \
989 _(APP_CUT_THROUGH_REGISTRATION_ADD, app_cut_through_registration_add) \
992 tcp_echo_api_hookup (udp_echo_main_t * utm)
995 vl_msg_api_set_handlers(VL_API_##N, #n, \
996 vl_api_##n##_t_handler, \
998 vl_api_##n##_t_endian, \
999 vl_api_##n##_t_print, \
1000 sizeof(vl_api_##n##_t), 1);
1001 foreach_tcp_echo_msg;
1007 connect_to_vpp (char *name)
1009 udp_echo_main_t *utm = &udp_echo_main;
1010 api_main_t *am = &api_main;
1012 if (vl_client_connect_to_vlib ("/vpe-api", name, 32) < 0)
1015 utm->vl_input_queue = am->shmem_hdr->vl_input_queue;
1016 utm->my_client_index = am->my_client_index;
1022 vlib_cli_output (struct vlib_main_t *vm, char *fmt, ...)
1024 clib_warning ("BUG");
1028 init_error_string_table (udp_echo_main_t * utm)
1030 utm->error_string_by_error_number = hash_create (0, sizeof (uword));
1032 #define _(n,v,s) hash_set (utm->error_string_by_error_number, -v, s);
1033 foreach_vnet_api_error;
1036 hash_set (utm->error_string_by_error_number, 99, "Misc");
1040 server_handle_fifo_event_rx (udp_echo_main_t * utm, u32 session_index)
1042 svm_fifo_t *rx_fifo, *tx_fifo;
1044 app_session_t *session;
1046 u32 max_dequeue, offset, max_transfer, rx_buf_len;
1047 session_evt_type_t et = FIFO_EVENT_APP_TX;
1049 session = pool_elt_at_index (utm->sessions, session_index);
1050 rx_buf_len = vec_len (utm->rx_buf);
1051 rx_fifo = session->rx_fifo;
1052 tx_fifo = session->tx_fifo;
1054 et += (session->session_index == utm->cut_through_session_index);
1056 max_dequeue = svm_fifo_max_dequeue (rx_fifo);
1057 /* Allow enqueuing of a new event */
1058 svm_fifo_unset_event (rx_fifo);
1060 if (PREDICT_FALSE (!max_dequeue))
1063 /* Read the max_dequeue */
1066 max_transfer = clib_min (rx_buf_len, max_dequeue);
1067 if (session->is_dgram)
1068 n_read = app_recv_dgram_raw (rx_fifo, utm->rx_buf, max_transfer,
1069 &session->transport, 0, 0);
1071 n_read = app_recv_stream_raw (rx_fifo, utm->rx_buf, max_transfer, 0,
1075 max_dequeue -= n_read;
1077 /* Reflect if a non-drop session */
1078 if (utm->have_return && n_read > 0)
1083 if (session->is_dgram)
1084 rv = app_send_dgram_raw (tx_fifo, &session->transport,
1086 &utm->rx_buf[offset], n_read, et,
1089 rv = app_send_stream_raw (tx_fifo, session->vpp_evt_q,
1090 &utm->rx_buf[offset], n_read, et,
1098 while ((rv <= 0 || n_read > 0) && !utm->time_to_stop);
1100 /* If event wasn't set, add one */
1101 if (svm_fifo_set_event (tx_fifo))
1102 app_send_io_evt_to_vpp (session->vpp_evt_q, tx_fifo,
1106 while ((n_read < 0 || max_dequeue > 0) && !utm->time_to_stop);
1110 server_handle_event_queue (udp_echo_main_t * utm)
1113 svm_msg_q_msg_t msg;
1114 svm_msg_q_t *mq = utm->our_event_queue;
1117 while (utm->state != STATE_READY)
1122 if (svm_msg_q_sub (mq, &msg, SVM_Q_WAIT, 0))
1124 clib_warning ("svm msg q returned");
1127 e = svm_msg_q_msg_data (mq, &msg);
1128 switch (e->event_type)
1130 case FIFO_EVENT_APP_RX:
1131 server_handle_fifo_event_rx (utm, e->fifo->client_session_index);
1133 case SESSION_IO_EVT_CT_TX:
1137 handle_mq_event (e);
1140 svm_msg_q_free_msg (mq, &msg);
1141 if (PREDICT_FALSE (utm->time_to_stop == 1))
1143 if (PREDICT_FALSE (utm->time_to_print_stats == 1))
1145 utm->time_to_print_stats = 0;
1146 fformat (stdout, "%d connections\n", pool_elts (utm->sessions));
1152 server_unbind (udp_echo_main_t * utm)
1154 vl_api_unbind_uri_t *ump;
1156 ump = vl_msg_api_alloc (sizeof (*ump));
1157 clib_memset (ump, 0, sizeof (*ump));
1159 ump->_vl_msg_id = ntohs (VL_API_UNBIND_URI);
1160 ump->client_index = utm->my_client_index;
1161 memcpy (ump->uri, utm->listen_uri, vec_len (utm->listen_uri));
1162 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & ump);
1166 server_bind (udp_echo_main_t * utm)
1168 vl_api_bind_uri_t *bmp;
1170 bmp = vl_msg_api_alloc (sizeof (*bmp));
1171 clib_memset (bmp, 0, sizeof (*bmp));
1173 bmp->_vl_msg_id = ntohs (VL_API_BIND_URI);
1174 bmp->client_index = utm->my_client_index;
1175 bmp->context = ntohl (0xfeedface);
1176 memcpy (bmp->uri, utm->listen_uri, vec_len (utm->listen_uri));
1177 vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
1181 udp_server_test (udp_echo_main_t * utm)
1183 u8 wait_for_state = utm->is_connected ? STATE_BOUND : STATE_READY;
1184 application_send_attach (utm);
1189 if (wait_for_state_change (utm, wait_for_state))
1191 clib_warning ("timeout waiting for state change");
1195 server_handle_event_queue (utm);
1198 server_unbind (utm);
1200 if (wait_for_state_change (utm, STATE_START))
1202 clib_warning ("timeout waiting for STATE_START");
1206 application_detach (utm);
1208 fformat (stdout, "Test complete...\n");
1212 main (int argc, char **argv)
1214 udp_echo_main_t *utm = &udp_echo_main;
1215 u8 *uri = (u8 *) "udp://6.0.1.1/1234";
1216 unformat_input_t _argv, *a = &_argv;
1217 int i_am_server = 1;
1218 app_session_t *session;
1224 clib_mem_init_thread_safe (0, 256 << 20);
1226 svm_fifo_segment_main_init (0x200000000ULL, 20);
1228 vec_validate (utm->rx_buf, 128 << 10);
1229 utm->session_index_by_vpp_handles = hash_create (0, sizeof (uword));
1230 utm->my_pid = getpid ();
1231 utm->configured_segment_size = 1 << 20;
1232 utm->segments_table = hash_create_vec (0, sizeof (u8), sizeof (u64));
1233 utm->have_return = 1;
1234 utm->bytes_to_send = 1024;
1235 utm->fifo_size = 128 << 10;
1236 utm->segment_main = &svm_fifo_segment_main;
1237 utm->cut_through_session_index = ~0;
1238 clib_time_init (&utm->clib_time);
1240 init_error_string_table (utm);
1241 unformat_init_command_line (a, argv);
1243 while (unformat_check_input (a) != UNFORMAT_END_OF_INPUT)
1245 if (unformat (a, "chroot prefix %s", &chroot_prefix))
1247 vl_set_memory_root_path ((char *) chroot_prefix);
1249 else if (unformat (a, "uri %s", &uri))
1251 else if (unformat (a, "segment-size %dM", &tmp))
1252 utm->configured_segment_size = tmp << 20;
1253 else if (unformat (a, "segment-size %dG", &tmp))
1254 utm->configured_segment_size = tmp << 30;
1255 else if (unformat (a, "server"))
1257 else if (unformat (a, "client"))
1259 else if (unformat (a, "no-return"))
1260 utm->have_return = 0;
1261 else if (unformat (a, "mbytes %d", &tmp))
1262 utm->bytes_to_send = (u64) tmp << 20;
1263 else if (unformat (a, "fifo-size %d", &tmp))
1264 utm->fifo_size = tmp << 10;
1267 fformat (stderr, "%s: usage [server|client]\n");
1272 utm->i_am_server = i_am_server;
1274 setup_signal_handlers ();
1275 tcp_echo_api_hookup (utm);
1279 utm->listen_uri = format (0, "%s%c", uri, 0);
1280 utm->is_connected = (utm->listen_uri[4] == 'c');
1281 app_name = "udp_echo_server";
1285 app_name = "udp_echo_client";
1286 utm->connect_uri = format (0, "%s%c", uri, 0);
1287 utm->is_connected = (utm->connect_uri[4] == 'c');
1289 if (connect_to_vpp (app_name) < 0)
1292 fformat (stderr, "Couldn't connect to vpe, exiting...\n");
1296 if (i_am_server == 0)
1302 /* $$$$ hack preallocation */
1303 for (i = 0; i < 200000; i++)
1305 pool_get (utm->sessions, session);
1306 clib_memset (session, 0, sizeof (*session));
1308 for (i = 0; i < 200000; i++)
1309 pool_put_index (utm->sessions, i);
1311 udp_server_test (utm);
1314 vl_client_disconnect_from_vlib ();
1318 #undef vl_api_version
1319 #define vl_api_version(n,v) static u32 vpe_api_version = v;
1320 #include <vpp/api/vpe.api.h>
1321 #undef vl_api_version
1324 vl_client_add_api_signatures (vl_api_memclnt_create_t * mp)
1327 * Send the main API signature in slot 0. This bit of code must
1328 * match the checks in ../vpe/api/api.c: vl_msg_api_version_check().
1330 mp->api_versions[0] = clib_host_to_net_u32 (vpe_api_version);
1340 * fd.io coding-style-patch-verification: ON
1343 * eval: (c-set-style "gnu")