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-rw-r--r--src/tests/vnet/session/udp_echo.c1172
1 files changed, 1172 insertions, 0 deletions
diff --git a/src/tests/vnet/session/udp_echo.c b/src/tests/vnet/session/udp_echo.c
new file mode 100644
index 00000000000..ac9411835ec
--- /dev/null
+++ b/src/tests/vnet/session/udp_echo.c
@@ -0,0 +1,1172 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <vppinfra/clib.h>
+#include <vppinfra/format.h>
+#include <vppinfra/error.h>
+#include <vppinfra/time.h>
+#include <vppinfra/macros.h>
+#include <vnet/vnet.h>
+#include <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vpp/api/vpe_msg_enum.h>
+#include <svm/svm_fifo_segment.h>
+#include <pthread.h>
+#include <vnet/session/application_interface.h>
+
+#define vl_typedefs /* define message structures */
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_typedefs
+
+/* declare message handlers for each api */
+
+#define vl_endianfun /* define message structures */
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...)
+#define vl_printfun
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_printfun
+
+typedef enum
+{
+ STATE_START,
+ STATE_BOUND,
+ STATE_READY,
+ STATE_FAILED,
+ STATE_DISCONNECTING,
+} connection_state_t;
+
+typedef struct
+{
+ svm_fifo_t *server_rx_fifo;
+ svm_fifo_t *server_tx_fifo;
+} session_t;
+
+typedef struct
+{
+ /* vpe input queue */
+ unix_shared_memory_queue_t *vl_input_queue;
+
+ /* API client handle */
+ u32 my_client_index;
+
+ /* The URI we're playing with */
+ u8 *uri;
+
+ /* Session pool */
+ session_t *sessions;
+
+ /* Hash table for disconnect processing */
+ uword *session_index_by_vpp_handles;
+
+ /* fifo segment */
+ svm_fifo_segment_private_t *seg;
+
+ /* intermediate rx buffer */
+ u8 *rx_buf;
+
+ /* URI for connect */
+ u8 *connect_uri;
+
+ int i_am_master;
+
+ /* Our event queue */
+ unix_shared_memory_queue_t *our_event_queue;
+
+ /* $$$ single thread only for the moment */
+ unix_shared_memory_queue_t *vpp_event_queue;
+
+ /* $$$$ hack: cut-through session index */
+ volatile u32 cut_through_session_index;
+ volatile u32 connected_session;
+
+ /* unique segment name counter */
+ u32 unique_segment_index;
+
+ pid_t my_pid;
+
+ /* pthread handle */
+ pthread_t cut_through_thread_handle;
+
+ /* For deadman timers */
+ clib_time_t clib_time;
+
+ /* State of the connection, shared between msg RX thread and main thread */
+ volatile connection_state_t state;
+
+ volatile int time_to_stop;
+ volatile int time_to_print_stats;
+
+ u32 configured_segment_size;
+
+ /* VNET_API_ERROR_FOO -> "Foo" hash table */
+ uword *error_string_by_error_number;
+
+ /* convenience */
+ svm_fifo_segment_main_t *segment_main;
+
+ u8 *connect_test_data;
+} uri_udp_test_main_t;
+
+#if CLIB_DEBUG > 0
+#define NITER 10000
+#else
+#define NITER 4000000
+#endif
+
+uri_udp_test_main_t uri_udp_test_main;
+
+static void
+stop_signal (int signum)
+{
+ uri_udp_test_main_t *um = &uri_udp_test_main;
+
+ um->time_to_stop = 1;
+}
+
+static void
+stats_signal (int signum)
+{
+ uri_udp_test_main_t *um = &uri_udp_test_main;
+
+ um->time_to_print_stats = 1;
+}
+
+static clib_error_t *
+setup_signal_handlers (void)
+{
+ signal (SIGINT, stats_signal);
+ signal (SIGQUIT, stop_signal);
+ signal (SIGTERM, stop_signal);
+
+ return 0;
+}
+
+void
+application_send_attach (uri_udp_test_main_t * utm)
+{
+ vl_api_application_attach_t *bmp;
+ u32 fifo_size = 1 << 20;
+ bmp = vl_msg_api_alloc (sizeof (*bmp));
+ memset (bmp, 0, sizeof (*bmp));
+
+ bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_ATTACH);
+ bmp->client_index = utm->my_client_index;
+ bmp->context = ntohl (0xfeedface);
+ bmp->options[APP_OPTIONS_FLAGS] =
+ APP_OPTIONS_FLAGS_ACCEPT_REDIRECT | APP_OPTIONS_FLAGS_ADD_SEGMENT;
+ bmp->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = 2;
+ bmp->options[APP_OPTIONS_RX_FIFO_SIZE] = fifo_size;
+ bmp->options[APP_OPTIONS_TX_FIFO_SIZE] = fifo_size;
+ bmp->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = 128 << 20;
+ bmp->options[APP_OPTIONS_SEGMENT_SIZE] = 256 << 20;
+ bmp->options[APP_OPTIONS_EVT_QUEUE_SIZE] = 16768;
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
+}
+
+void
+application_detach (uri_udp_test_main_t * utm)
+{
+ vl_api_application_detach_t *bmp;
+ bmp = vl_msg_api_alloc (sizeof (*bmp));
+ memset (bmp, 0, sizeof (*bmp));
+
+ bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_DETACH);
+ bmp->client_index = utm->my_client_index;
+ bmp->context = ntohl (0xfeedface);
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
+}
+
+static void
+vl_api_application_attach_reply_t_handler (vl_api_application_attach_reply_t *
+ mp)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ svm_fifo_segment_create_args_t _a, *a = &_a;
+ int rv;
+
+ if (mp->retval)
+ {
+ clib_warning ("attach failed: %d", mp->retval);
+ utm->state = STATE_FAILED;
+ return;
+ }
+
+ if (mp->segment_name_length == 0)
+ {
+ clib_warning ("segment_name_length zero");
+ return;
+ }
+
+ a->segment_name = (char *) mp->segment_name;
+ a->segment_size = mp->segment_size;
+
+ ASSERT (mp->app_event_queue_address);
+
+ /* Attach to the segment vpp created */
+ rv = svm_fifo_segment_attach (a);
+ if (rv)
+ {
+ clib_warning ("svm_fifo_segment_attach ('%s') failed",
+ mp->segment_name);
+ return;
+ }
+
+ utm->our_event_queue =
+ uword_to_pointer (mp->app_event_queue_address,
+ unix_shared_memory_queue_t *);
+}
+
+static void
+vl_api_application_detach_reply_t_handler (vl_api_application_detach_reply_t *
+ mp)
+{
+ if (mp->retval)
+ clib_warning ("detach returned with err: %d", mp->retval);
+}
+
+u8 *
+format_api_error (u8 * s, va_list * args)
+{
+ uri_udp_test_main_t *utm = va_arg (*args, uri_udp_test_main_t *);
+ i32 error = va_arg (*args, u32);
+ uword *p;
+
+ p = hash_get (utm->error_string_by_error_number, -error);
+
+ if (p)
+ s = format (s, "%s", p[0]);
+ else
+ s = format (s, "%d", error);
+ return s;
+}
+
+int
+wait_for_state_change (uri_udp_test_main_t * utm, connection_state_t state)
+{
+#if CLIB_DEBUG > 0
+#define TIMEOUT 600.0
+#else
+#define TIMEOUT 600.0
+#endif
+
+ f64 timeout = clib_time_now (&utm->clib_time) + TIMEOUT;
+
+ while (clib_time_now (&utm->clib_time) < timeout)
+ {
+ if (utm->state == state)
+ return 0;
+ }
+ return -1;
+}
+
+u64 server_bytes_received, server_bytes_sent;
+
+static void *
+cut_through_thread_fn (void *arg)
+{
+ session_t *s;
+ svm_fifo_t *rx_fifo;
+ svm_fifo_t *tx_fifo;
+ u8 *my_copy_buffer = 0;
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ i32 actual_transfer;
+ int rv;
+ u32 buffer_offset;
+
+ while (utm->cut_through_session_index == ~0)
+ ;
+
+ s = pool_elt_at_index (utm->sessions, utm->cut_through_session_index);
+
+ rx_fifo = s->server_rx_fifo;
+ tx_fifo = s->server_tx_fifo;
+
+ vec_validate (my_copy_buffer, 64 * 1024 - 1);
+
+ while (true)
+ {
+ /* We read from the tx fifo and write to the rx fifo */
+ do
+ {
+ actual_transfer = svm_fifo_dequeue_nowait (tx_fifo,
+ vec_len (my_copy_buffer),
+ my_copy_buffer);
+ }
+ while (actual_transfer <= 0);
+
+ server_bytes_received += actual_transfer;
+
+ buffer_offset = 0;
+ while (actual_transfer > 0)
+ {
+ rv = svm_fifo_enqueue_nowait (rx_fifo, actual_transfer,
+ my_copy_buffer + buffer_offset);
+ if (rv > 0)
+ {
+ actual_transfer -= rv;
+ buffer_offset += rv;
+ server_bytes_sent += rv;
+ }
+
+ }
+ if (PREDICT_FALSE (utm->time_to_stop))
+ break;
+ }
+
+ pthread_exit (0);
+}
+
+static void
+udp_client_connect (uri_udp_test_main_t * utm)
+{
+ vl_api_connect_uri_t *cmp;
+ cmp = vl_msg_api_alloc (sizeof (*cmp));
+ memset (cmp, 0, sizeof (*cmp));
+
+ cmp->_vl_msg_id = ntohs (VL_API_CONNECT_URI);
+ cmp->client_index = utm->my_client_index;
+ cmp->context = ntohl (0xfeedface);
+ memcpy (cmp->uri, utm->connect_uri, vec_len (utm->connect_uri));
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & cmp);
+}
+
+static void
+client_send_cut_through (uri_udp_test_main_t * utm, session_t * session)
+{
+ int i;
+ u8 *test_data = 0;
+ u64 bytes_received = 0, bytes_sent = 0;
+ i32 bytes_to_read;
+ int rv;
+ f64 before, after, delta, bytes_per_second;
+ svm_fifo_t *rx_fifo, *tx_fifo;
+ int buffer_offset, bytes_to_send = 0;
+
+ /*
+ * Prepare test data
+ */
+ vec_validate (test_data, 64 * 1024 - 1);
+ for (i = 0; i < vec_len (test_data); i++)
+ test_data[i] = i & 0xff;
+
+ rx_fifo = session->server_rx_fifo;
+ tx_fifo = session->server_tx_fifo;
+
+ before = clib_time_now (&utm->clib_time);
+
+ vec_validate (utm->rx_buf, vec_len (test_data) - 1);
+
+ for (i = 0; i < NITER; i++)
+ {
+ bytes_to_send = vec_len (test_data);
+ buffer_offset = 0;
+ while (bytes_to_send > 0)
+ {
+ rv = svm_fifo_enqueue_nowait (tx_fifo, bytes_to_send,
+ test_data + buffer_offset);
+
+ if (rv > 0)
+ {
+ bytes_to_send -= rv;
+ buffer_offset += rv;
+ bytes_sent += rv;
+ }
+ }
+
+ bytes_to_read = svm_fifo_max_dequeue (rx_fifo);
+ bytes_to_read = vec_len (utm->rx_buf) > bytes_to_read ?
+ bytes_to_read : vec_len (utm->rx_buf);
+
+ buffer_offset = 0;
+ while (bytes_to_read > 0)
+ {
+ rv = svm_fifo_dequeue_nowait (rx_fifo,
+ bytes_to_read,
+ utm->rx_buf + buffer_offset);
+ if (rv > 0)
+ {
+ bytes_to_read -= rv;
+ buffer_offset += rv;
+ bytes_received += rv;
+ }
+ }
+ }
+ while (bytes_received < bytes_sent)
+ {
+ rv =
+ svm_fifo_dequeue_nowait (rx_fifo, vec_len (utm->rx_buf), utm->rx_buf);
+ if (rv > 0)
+ {
+#if CLIB_DEBUG > 0
+ int j;
+ for (j = 0; j < rv; j++)
+ {
+ if (utm->rx_buf[j] != ((bytes_received + j) & 0xff))
+ {
+ clib_warning ("error at byte %lld, 0x%x not 0x%x",
+ bytes_received + j,
+ utm->rx_buf[j],
+ ((bytes_received + j) & 0xff));
+ }
+ }
+#endif
+ bytes_received += (u64) rv;
+ }
+ }
+
+ after = clib_time_now (&utm->clib_time);
+ delta = after - before;
+ bytes_per_second = 0.0;
+
+ if (delta > 0.0)
+ bytes_per_second = (f64) bytes_received / delta;
+
+ fformat (stdout,
+ "Done: %lld recv bytes in %.2f seconds, %.2f bytes/sec...\n\n",
+ bytes_received, delta, bytes_per_second);
+ fformat (stdout,
+ "Done: %lld sent bytes in %.2f seconds, %.2f bytes/sec...\n\n",
+ bytes_sent, delta, bytes_per_second);
+ fformat (stdout,
+ "client -> server -> client round trip: %.2f Gbit/sec \n\n",
+ (bytes_per_second * 8.0) / 1e9);
+}
+
+static void
+send_test_chunk (uri_udp_test_main_t * utm, svm_fifo_t * tx_fifo, int mypid,
+ u32 bytes)
+{
+ u8 *test_data = utm->connect_test_data;
+ u64 bytes_sent = 0;
+ int test_buf_offset = 0;
+ u32 bytes_to_snd;
+ u32 queue_max_chunk = 128 << 10, actual_write;
+ session_fifo_event_t evt;
+ int rv;
+
+ bytes_to_snd = (bytes == 0) ? vec_len (test_data) : bytes;
+ if (bytes_to_snd > vec_len (test_data))
+ bytes_to_snd = vec_len (test_data);
+
+ while (bytes_to_snd > 0 && !utm->time_to_stop)
+ {
+ actual_write = (bytes_to_snd > queue_max_chunk) ?
+ queue_max_chunk : bytes_to_snd;
+ rv = svm_fifo_enqueue_nowait (tx_fifo, actual_write,
+ test_data + test_buf_offset);
+
+ if (rv > 0)
+ {
+ bytes_to_snd -= rv;
+ test_buf_offset += rv;
+ bytes_sent += rv;
+
+ if (svm_fifo_set_event (tx_fifo))
+ {
+ /* Fabricate TX event, send to vpp */
+ evt.fifo = tx_fifo;
+ evt.event_type = FIFO_EVENT_APP_TX;
+
+ unix_shared_memory_queue_add (utm->vpp_event_queue,
+ (u8 *) & evt,
+ 0 /* do wait for mutex */ );
+ }
+ }
+ }
+}
+
+static void
+recv_test_chunk (uri_udp_test_main_t * utm, session_t * session)
+{
+ svm_fifo_t *rx_fifo;
+ int buffer_offset, bytes_to_read = 0, rv;
+
+ rx_fifo = session->server_rx_fifo;
+ bytes_to_read = svm_fifo_max_dequeue (rx_fifo);
+ bytes_to_read =
+ vec_len (utm->rx_buf) > bytes_to_read ?
+ bytes_to_read : vec_len (utm->rx_buf);
+
+ buffer_offset = 0;
+ while (bytes_to_read > 0)
+ {
+ rv = svm_fifo_dequeue_nowait (rx_fifo, bytes_to_read,
+ utm->rx_buf + buffer_offset);
+ if (rv > 0)
+ {
+ bytes_to_read -= rv;
+ buffer_offset += rv;
+ }
+ }
+}
+
+void
+client_send_data (uri_udp_test_main_t * utm)
+{
+ u8 *test_data;
+ int mypid = getpid ();
+ session_t *session;
+ svm_fifo_t *tx_fifo;
+ u32 n_iterations;
+ int i;
+
+ vec_validate (utm->connect_test_data, 64 * 1024 - 1);
+ for (i = 0; i < vec_len (utm->connect_test_data); i++)
+ utm->connect_test_data[i] = i & 0xff;
+
+ test_data = utm->connect_test_data;
+ session = pool_elt_at_index (utm->sessions, utm->connected_session);
+ tx_fifo = session->server_tx_fifo;
+
+ ASSERT (vec_len (test_data) > 0);
+
+ vec_validate (utm->rx_buf, vec_len (test_data) - 1);
+ n_iterations = NITER;
+
+ for (i = 0; i < n_iterations; i++)
+ {
+ send_test_chunk (utm, tx_fifo, mypid, 0);
+ recv_test_chunk (utm, session);
+ if (utm->time_to_stop)
+ break;
+ }
+
+ f64 timeout = clib_time_now (&utm->clib_time) + 5;
+ while (clib_time_now (&utm->clib_time) < timeout)
+ {
+ recv_test_chunk (utm, session);
+ }
+
+}
+
+static void
+client_test (uri_udp_test_main_t * utm)
+{
+ session_t *session;
+
+ application_send_attach (utm);
+ udp_client_connect (utm);
+
+ if (wait_for_state_change (utm, STATE_READY))
+ {
+ clib_warning ("timeout waiting for STATE_READY");
+ return;
+ }
+
+ if (utm->cut_through_session_index != ~0)
+ {
+ session = pool_elt_at_index (utm->sessions,
+ utm->cut_through_session_index);
+ client_send_cut_through (utm, session);
+ }
+ else
+ {
+ session = pool_elt_at_index (utm->sessions, utm->connected_session);
+ client_send_data (utm);
+ }
+
+ application_detach (utm);
+}
+
+static void
+vl_api_bind_uri_reply_t_handler (vl_api_bind_uri_reply_t * mp)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+
+ if (mp->retval)
+ {
+ clib_warning ("bind failed: %d", mp->retval);
+ utm->state = STATE_FAILED;
+ return;
+ }
+
+ utm->state = STATE_BOUND;
+}
+
+static void
+vl_api_map_another_segment_t_handler (vl_api_map_another_segment_t * mp)
+{
+ svm_fifo_segment_create_args_t _a, *a = &_a;
+ int rv;
+
+ memset (a, 0, sizeof (*a));
+ a->segment_name = (char *) mp->segment_name;
+ a->segment_size = mp->segment_size;
+ /* Attach to the segment vpp created */
+ rv = svm_fifo_segment_attach (a);
+ if (rv)
+ {
+ clib_warning ("svm_fifo_segment_attach ('%s') failed",
+ mp->segment_name);
+ return;
+ }
+ clib_warning ("Mapped new segment '%s' size %d", mp->segment_name,
+ mp->segment_size);
+}
+
+/**
+ * Acting as server for redirected connect requests
+ */
+static void
+vl_api_connect_uri_t_handler (vl_api_connect_uri_t * mp)
+{
+ u32 segment_index;
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ svm_fifo_segment_main_t *sm = &svm_fifo_segment_main;
+ svm_fifo_segment_create_args_t _a, *a = &_a;
+ svm_fifo_segment_private_t *seg;
+ unix_shared_memory_queue_t *client_q;
+ vl_api_connect_session_reply_t *rmp;
+ session_t *session = 0;
+ int rv = 0;
+
+ /* Create the segment */
+ a->segment_name = (char *) format (0, "%d:segment%d%c", utm->my_pid,
+ utm->unique_segment_index++, 0);
+ a->segment_size = utm->configured_segment_size;
+
+ rv = svm_fifo_segment_create (a);
+ if (rv)
+ {
+ clib_warning ("sm_fifo_segment_create ('%s') failed", a->segment_name);
+ rv = VNET_API_ERROR_URI_FIFO_CREATE_FAILED;
+ goto send_reply;
+ }
+
+ vec_add2 (utm->seg, seg, 1);
+
+ segment_index = vec_len (sm->segments) - 1;
+ memcpy (seg, sm->segments + segment_index, sizeof (utm->seg[0]));
+
+ pool_get (utm->sessions, session);
+
+ session->server_rx_fifo = svm_fifo_segment_alloc_fifo
+ (utm->seg, 128 * 1024, FIFO_SEGMENT_RX_FREELIST);
+ ASSERT (session->server_rx_fifo);
+
+ session->server_tx_fifo = svm_fifo_segment_alloc_fifo
+ (utm->seg, 128 * 1024, FIFO_SEGMENT_TX_FREELIST);
+ ASSERT (session->server_tx_fifo);
+
+ session->server_rx_fifo->master_session_index = session - utm->sessions;
+ session->server_tx_fifo->master_session_index = session - utm->sessions;
+ utm->cut_through_session_index = session - utm->sessions;
+
+ rv = pthread_create (&utm->cut_through_thread_handle,
+ NULL /*attr */ , cut_through_thread_fn, 0);
+ if (rv)
+ {
+ clib_warning ("pthread_create returned %d", rv);
+ rv = VNET_API_ERROR_SYSCALL_ERROR_1;
+ }
+
+send_reply:
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+
+ rmp->_vl_msg_id = ntohs (VL_API_CONNECT_SESSION_REPLY);
+ rmp->context = mp->context;
+ rmp->retval = ntohl (rv);
+ rmp->segment_name_length = vec_len (a->segment_name);
+ if (session)
+ {
+ rmp->server_rx_fifo = pointer_to_uword (session->server_rx_fifo);
+ rmp->server_tx_fifo = pointer_to_uword (session->server_tx_fifo);
+ }
+
+ memcpy (rmp->segment_name, a->segment_name, vec_len (a->segment_name));
+
+ vec_free (a->segment_name);
+
+ client_q =
+ uword_to_pointer (mp->client_queue_address, unix_shared_memory_queue_t *);
+ vl_msg_api_send_shmem (client_q, (u8 *) & rmp);
+}
+
+static void
+vl_api_unbind_uri_reply_t_handler (vl_api_unbind_uri_reply_t * mp)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+
+ if (mp->retval != 0)
+ clib_warning ("returned %d", ntohl (mp->retval));
+
+ utm->state = STATE_START;
+}
+
+static void
+vl_api_accept_session_t_handler (vl_api_accept_session_t * mp)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ vl_api_accept_session_reply_t *rmp;
+ svm_fifo_t *rx_fifo, *tx_fifo;
+ session_t *session;
+ static f64 start_time;
+
+ if (start_time == 0.0)
+ start_time = clib_time_now (&utm->clib_time);
+
+ utm->vpp_event_queue =
+ uword_to_pointer (mp->vpp_event_queue_address,
+ unix_shared_memory_queue_t *);
+
+ pool_get (utm->sessions, session);
+
+ rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
+ rx_fifo->client_session_index = session - utm->sessions;
+ tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
+ tx_fifo->client_session_index = session - utm->sessions;
+
+ session->server_rx_fifo = rx_fifo;
+ session->server_tx_fifo = tx_fifo;
+
+ hash_set (utm->session_index_by_vpp_handles, mp->handle,
+ session - utm->sessions);
+
+ if (pool_elts (utm->sessions) && (pool_elts (utm->sessions) % 20000) == 0)
+ {
+ f64 now = clib_time_now (&utm->clib_time);
+ fformat (stdout, "%d active sessions in %.2f seconds, %.2f/sec...\n",
+ pool_elts (utm->sessions), now - start_time,
+ (f64) pool_elts (utm->sessions) / (now - start_time));
+ }
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_ACCEPT_SESSION_REPLY);
+ rmp->handle = mp->handle;
+ rmp->context = mp->context;
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & rmp);
+
+ CLIB_MEMORY_BARRIER ();
+ utm->state = STATE_READY;
+}
+
+static void
+vl_api_disconnect_session_t_handler (vl_api_disconnect_session_t * mp)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ session_t *session;
+ vl_api_disconnect_session_reply_t *rmp;
+ uword *p;
+ int rv = 0;
+
+ p = hash_get (utm->session_index_by_vpp_handles, mp->handle);
+
+ if (p)
+ {
+ session = pool_elt_at_index (utm->sessions, p[0]);
+ hash_unset (utm->session_index_by_vpp_handles, mp->handle);
+ pool_put (utm->sessions, session);
+ }
+ else
+ {
+ clib_warning ("couldn't find session key %llx", mp->handle);
+ rv = -11;
+ }
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_DISCONNECT_SESSION_REPLY);
+ rmp->retval = rv;
+ rmp->handle = mp->handle;
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & rmp);
+}
+
+static void
+vl_api_connect_session_reply_t_handler (vl_api_connect_session_reply_t * mp)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ session_t *session;
+
+ ASSERT (utm->i_am_master == 0);
+
+ if (mp->retval)
+ {
+ clib_warning ("failed connect");
+ return;
+ }
+
+ /* We've been redirected */
+ if (mp->segment_name_length > 0)
+ {
+ svm_fifo_segment_main_t *sm = &svm_fifo_segment_main;
+ svm_fifo_segment_create_args_t _a, *a = &_a;
+ u32 segment_index;
+ svm_fifo_segment_private_t *seg;
+ int rv;
+
+ memset (a, 0, sizeof (*a));
+ a->segment_name = (char *) mp->segment_name;
+
+ sleep (1);
+
+ rv = svm_fifo_segment_attach (a);
+ if (rv)
+ {
+ clib_warning ("sm_fifo_segment_create ('%v') failed",
+ mp->segment_name);
+ return;
+ }
+
+ segment_index = a->new_segment_indices[0];
+ vec_add2 (utm->seg, seg, 1);
+ memcpy (seg, sm->segments + segment_index, sizeof (*seg));
+ sleep (1);
+ }
+
+ pool_get (utm->sessions, session);
+ session->server_rx_fifo = uword_to_pointer (mp->server_rx_fifo,
+ svm_fifo_t *);
+ ASSERT (session->server_rx_fifo);
+ session->server_tx_fifo = uword_to_pointer (mp->server_tx_fifo,
+ svm_fifo_t *);
+ ASSERT (session->server_tx_fifo);
+
+ if (mp->segment_name_length > 0)
+ utm->cut_through_session_index = session - utm->sessions;
+ else
+ {
+ utm->connected_session = session - utm->sessions;
+ utm->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address,
+ unix_shared_memory_queue_t *);
+ }
+ utm->state = STATE_READY;
+}
+
+#define foreach_uri_msg \
+_(BIND_URI_REPLY, bind_uri_reply) \
+_(CONNECT_URI, connect_uri) \
+_(CONNECT_SESSION_REPLY, connect_session_reply) \
+_(UNBIND_URI_REPLY, unbind_uri_reply) \
+_(ACCEPT_SESSION, accept_session) \
+_(DISCONNECT_SESSION, disconnect_session) \
+_(MAP_ANOTHER_SEGMENT, map_another_segment) \
+_(APPLICATION_ATTACH_REPLY, application_attach_reply) \
+_(APPLICATION_DETACH_REPLY, application_detach_reply) \
+
+void
+uri_api_hookup (uri_udp_test_main_t * utm)
+{
+#define _(N,n) \
+ vl_msg_api_set_handlers(VL_API_##N, #n, \
+ vl_api_##n##_t_handler, \
+ vl_noop_handler, \
+ vl_api_##n##_t_endian, \
+ vl_api_##n##_t_print, \
+ sizeof(vl_api_##n##_t), 1);
+ foreach_uri_msg;
+#undef _
+
+}
+
+int
+connect_to_vpp (char *name)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ api_main_t *am = &api_main;
+
+ if (vl_client_connect_to_vlib ("/vpe-api", name, 32) < 0)
+ return -1;
+
+ utm->vl_input_queue = am->shmem_hdr->vl_input_queue;
+ utm->my_client_index = am->my_client_index;
+
+ return 0;
+}
+
+void
+vlib_cli_output (struct vlib_main_t *vm, char *fmt, ...)
+{
+ clib_warning ("BUG");
+}
+
+static void
+init_error_string_table (uri_udp_test_main_t * utm)
+{
+ utm->error_string_by_error_number = hash_create (0, sizeof (uword));
+
+#define _(n,v,s) hash_set (utm->error_string_by_error_number, -v, s);
+ foreach_vnet_api_error;
+#undef _
+
+ hash_set (utm->error_string_by_error_number, 99, "Misc");
+}
+
+void
+server_handle_fifo_event_rx (uri_udp_test_main_t * utm,
+ session_fifo_event_t * e)
+{
+ svm_fifo_t *rx_fifo, *tx_fifo;
+ int nbytes;
+ session_fifo_event_t evt;
+ unix_shared_memory_queue_t *q;
+ int rv;
+
+ rx_fifo = e->fifo;
+ tx_fifo = utm->sessions[rx_fifo->client_session_index].server_tx_fifo;
+ svm_fifo_unset_event (rx_fifo);
+
+ do
+ {
+ nbytes = svm_fifo_dequeue_nowait (rx_fifo, vec_len (utm->rx_buf),
+ utm->rx_buf);
+ }
+ while (nbytes <= 0);
+ do
+ {
+ rv = svm_fifo_enqueue_nowait (tx_fifo, nbytes, utm->rx_buf);
+ }
+ while (rv == -2);
+
+ if (svm_fifo_set_event (tx_fifo))
+ {
+ /* Fabricate TX event, send to vpp */
+ evt.fifo = tx_fifo;
+ evt.event_type = FIFO_EVENT_APP_TX;
+ q = utm->vpp_event_queue;
+ unix_shared_memory_queue_add (q, (u8 *) & evt,
+ 0 /* do wait for mutex */ );
+ }
+}
+
+void
+server_handle_event_queue (uri_udp_test_main_t * utm)
+{
+ session_fifo_event_t _e, *e = &_e;
+
+ while (utm->state != STATE_READY)
+ sleep (5);
+
+ while (1)
+ {
+ unix_shared_memory_queue_sub (utm->our_event_queue, (u8 *) e,
+ 0 /* nowait */ );
+ switch (e->event_type)
+ {
+ case FIFO_EVENT_APP_RX:
+ server_handle_fifo_event_rx (utm, e);
+ break;
+
+ case FIFO_EVENT_DISCONNECT:
+ return;
+
+ default:
+ clib_warning ("unknown event type %d", e->event_type);
+ break;
+ }
+ if (PREDICT_FALSE (utm->time_to_stop == 1))
+ return;
+ if (PREDICT_FALSE (utm->time_to_print_stats == 1))
+ {
+ utm->time_to_print_stats = 0;
+ fformat (stdout, "%d connections\n", pool_elts (utm->sessions));
+ }
+ }
+}
+
+static void
+server_unbind (uri_udp_test_main_t * utm)
+{
+ vl_api_unbind_uri_t *ump;
+
+ ump = vl_msg_api_alloc (sizeof (*ump));
+ memset (ump, 0, sizeof (*ump));
+
+ ump->_vl_msg_id = ntohs (VL_API_UNBIND_URI);
+ ump->client_index = utm->my_client_index;
+ memcpy (ump->uri, utm->uri, vec_len (utm->uri));
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & ump);
+}
+
+static void
+server_bind (uri_udp_test_main_t * utm)
+{
+ vl_api_bind_uri_t *bmp;
+
+ bmp = vl_msg_api_alloc (sizeof (*bmp));
+ memset (bmp, 0, sizeof (*bmp));
+
+ bmp->_vl_msg_id = ntohs (VL_API_BIND_URI);
+ bmp->client_index = utm->my_client_index;
+ bmp->context = ntohl (0xfeedface);
+ memcpy (bmp->uri, utm->uri, vec_len (utm->uri));
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
+}
+
+void
+udp_server_test (uri_udp_test_main_t * utm)
+{
+
+ application_send_attach (utm);
+
+ /* Bind to uri */
+ server_bind (utm);
+
+ if (wait_for_state_change (utm, STATE_BOUND))
+ {
+ clib_warning ("timeout waiting for STATE_BOUND");
+ return;
+ }
+
+ server_handle_event_queue (utm);
+
+ /* Cleanup */
+ server_unbind (utm);
+
+ if (wait_for_state_change (utm, STATE_START))
+ {
+ clib_warning ("timeout waiting for STATE_START");
+ return;
+ }
+
+ application_detach (utm);
+
+ fformat (stdout, "Test complete...\n");
+}
+
+int
+main (int argc, char **argv)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ unformat_input_t _argv, *a = &_argv;
+ u8 *chroot_prefix;
+ u8 *heap;
+ u8 *bind_name = (u8 *) "udp://0.0.0.0/1234";
+ u32 tmp;
+ mheap_t *h;
+ session_t *session;
+ int i;
+ int i_am_master = 1;
+
+ clib_mem_init (0, 256 << 20);
+
+ heap = clib_mem_get_per_cpu_heap ();
+ h = mheap_header (heap);
+
+ /* make the main heap thread-safe */
+ h->flags |= MHEAP_FLAG_THREAD_SAFE;
+
+ vec_validate (utm->rx_buf, 8192);
+
+ utm->session_index_by_vpp_handles = hash_create (0, sizeof (uword));
+
+ utm->my_pid = getpid ();
+ utm->configured_segment_size = 1 << 20;
+
+ clib_time_init (&utm->clib_time);
+ init_error_string_table (utm);
+ svm_fifo_segment_init (0x200000000ULL, 20);
+ unformat_init_command_line (a, argv);
+
+ while (unformat_check_input (a) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (a, "chroot prefix %s", &chroot_prefix))
+ {
+ vl_set_memory_root_path ((char *) chroot_prefix);
+ }
+ else if (unformat (a, "uri %s", &bind_name))
+ ;
+ else if (unformat (a, "segment-size %dM", &tmp))
+ utm->configured_segment_size = tmp << 20;
+ else if (unformat (a, "segment-size %dG", &tmp))
+ utm->configured_segment_size = tmp << 30;
+ else if (unformat (a, "master"))
+ i_am_master = 1;
+ else if (unformat (a, "slave"))
+ i_am_master = 0;
+ else
+ {
+ fformat (stderr, "%s: usage [master|slave]\n");
+ exit (1);
+ }
+ }
+
+ utm->cut_through_session_index = ~0;
+ utm->uri = format (0, "%s%c", bind_name, 0);
+ utm->i_am_master = i_am_master;
+ utm->segment_main = &svm_fifo_segment_main;
+
+ utm->connect_uri = format (0, "udp://6.0.1.2/1234%c", 0);
+
+ setup_signal_handlers ();
+
+ uri_api_hookup (utm);
+
+ if (connect_to_vpp (i_am_master ? "uri_udp_master" : "uri_udp_slave") < 0)
+ {
+ svm_region_exit ();
+ fformat (stderr, "Couldn't connect to vpe, exiting...\n");
+ exit (1);
+ }
+
+ if (i_am_master == 0)
+ {
+ client_test (utm);
+ exit (0);
+ }
+
+ /* $$$$ hack preallocation */
+ for (i = 0; i < 200000; i++)
+ {
+ pool_get (utm->sessions, session);
+ memset (session, 0, sizeof (*session));
+ }
+ for (i = 0; i < 200000; i++)
+ pool_put_index (utm->sessions, i);
+
+ udp_server_test (utm);
+
+ vl_client_disconnect_from_vlib ();
+ exit (0);
+}
+
+#undef vl_api_version
+#define vl_api_version(n,v) static u32 vpe_api_version = v;
+#include <vpp/api/vpe.api.h>
+#undef vl_api_version
+
+void
+vl_client_add_api_signatures (vl_api_memclnt_create_t * mp)
+{
+ /*
+ * Send the main API signature in slot 0. This bit of code must
+ * match the checks in ../vpe/api/api.c: vl_msg_api_version_check().
+ */
+ mp->api_versions[0] = clib_host_to_net_u32 (vpe_api_version);
+}
+
+u32
+vl (void *p)
+{
+ return vec_len (p);
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */