blob: b073459c52e74a8d85b240ded7b2757fefedb7fa [file] [log] [blame]
/*
* builtin_client.c - vpp built-in tcp client/connect code
*
* Copyright (c) 2017 by 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 <vnet/vnet.h>
#include <vnet/plugin/plugin.h>
#include <vnet/tcp/builtin_client.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <vpp/app/version.h>
tclient_main_t tclient_main;
#define TCP_BUILTIN_CLIENT_DBG (0)
static void
signal_evt_to_cli_i (int *code)
{
tclient_main_t *tm = &tclient_main;
ASSERT (vlib_get_thread_index () == 0);
vlib_process_signal_event (tm->vlib_main, tm->cli_node_index, *code, 0);
}
static void
signal_evt_to_cli (int code)
{
if (vlib_get_thread_index () != 0)
vl_api_rpc_call_main_thread (signal_evt_to_cli_i, (u8 *) & code,
sizeof (code));
else
signal_evt_to_cli_i (&code);
}
static void
send_test_chunk (tclient_main_t * tm, session_t * s)
{
u8 *test_data = tm->connect_test_data;
int test_buf_offset;
u32 bytes_this_chunk;
session_fifo_event_t evt;
svm_fifo_t *txf;
int rv;
ASSERT (vec_len (test_data) > 0);
test_buf_offset = s->bytes_sent % vec_len (test_data);
bytes_this_chunk = vec_len (test_data) - test_buf_offset;
bytes_this_chunk = bytes_this_chunk < s->bytes_to_send
? bytes_this_chunk : s->bytes_to_send;
txf = s->server_tx_fifo;
rv = svm_fifo_enqueue_nowait (txf, bytes_this_chunk,
test_data + test_buf_offset);
/* If we managed to enqueue data... */
if (rv > 0)
{
/* Account for it... */
s->bytes_to_send -= rv;
s->bytes_sent += rv;
if (TCP_BUILTIN_CLIENT_DBG)
{
/* *INDENT-OFF* */
ELOG_TYPE_DECLARE (e) =
{
.format = "tx-enq: xfer %d bytes, sent %u remain %u",
.format_args = "i4i4i4",
};
/* *INDENT-ON* */
struct
{
u32 data[3];
} *ed;
ed = ELOG_DATA (&vlib_global_main.elog_main, e);
ed->data[0] = rv;
ed->data[1] = s->bytes_sent;
ed->data[2] = s->bytes_to_send;
}
/* Poke the session layer */
if (svm_fifo_set_event (txf))
{
/* Fabricate TX event, send to vpp */
evt.fifo = txf;
evt.event_type = FIFO_EVENT_APP_TX;
if (svm_queue_add
(tm->vpp_event_queue[txf->master_thread_index], (u8 *) & evt,
0 /* do wait for mutex */ ))
clib_warning ("could not enqueue event");
}
}
}
static void
receive_test_chunk (tclient_main_t * tm, session_t * s)
{
svm_fifo_t *rx_fifo = s->server_rx_fifo;
u32 my_thread_index = vlib_get_thread_index ();
int n_read, i;
/* Allow enqueuing of new event */
// svm_fifo_unset_event (rx_fifo);
if (tm->test_bytes)
{
n_read = svm_fifo_dequeue_nowait (rx_fifo,
vec_len (tm->rx_buf[my_thread_index]),
tm->rx_buf[my_thread_index]);
}
else
{
n_read = svm_fifo_max_dequeue (rx_fifo);
svm_fifo_dequeue_drop (rx_fifo, n_read);
}
if (n_read > 0)
{
if (TCP_BUILTIN_CLIENT_DBG)
{
/* *INDENT-OFF* */
ELOG_TYPE_DECLARE (e) =
{
.format = "rx-deq: %d bytes",
.format_args = "i4",
};
/* *INDENT-ON* */
struct
{
u32 data[1];
} *ed;
ed = ELOG_DATA (&vlib_global_main.elog_main, e);
ed->data[0] = n_read;
}
if (tm->test_bytes)
{
for (i = 0; i < n_read; i++)
{
if (tm->rx_buf[my_thread_index][i]
!= ((s->bytes_received + i) & 0xff))
{
clib_warning ("read %d error at byte %lld, 0x%x not 0x%x",
n_read, s->bytes_received + i,
tm->rx_buf[my_thread_index][i],
((s->bytes_received + i) & 0xff));
tm->test_failed = 1;
}
}
}
s->bytes_to_receive -= n_read;
s->bytes_received += n_read;
}
}
static uword
builtin_client_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
tclient_main_t *tm = &tclient_main;
int my_thread_index = vlib_get_thread_index ();
session_t *sp;
int i;
int delete_session;
u32 *connection_indices;
u32 *connections_this_batch;
u32 nconnections_this_batch;
connection_indices = tm->connection_index_by_thread[my_thread_index];
connections_this_batch =
tm->connections_this_batch_by_thread[my_thread_index];
if ((tm->run_test == 0) ||
((vec_len (connection_indices) == 0)
&& vec_len (connections_this_batch) == 0))
return 0;
/* Grab another pile of connections */
if (PREDICT_FALSE (vec_len (connections_this_batch) == 0))
{
nconnections_this_batch =
clib_min (tm->connections_per_batch, vec_len (connection_indices));
ASSERT (nconnections_this_batch > 0);
vec_validate (connections_this_batch, nconnections_this_batch - 1);
clib_memcpy (connections_this_batch,
connection_indices + vec_len (connection_indices)
- nconnections_this_batch,
nconnections_this_batch * sizeof (u32));
_vec_len (connection_indices) -= nconnections_this_batch;
}
if (PREDICT_FALSE (tm->prev_conns != tm->connections_per_batch
&& tm->prev_conns == vec_len (connections_this_batch)))
{
tm->repeats++;
tm->prev_conns = vec_len (connections_this_batch);
if (tm->repeats == 500000)
{
clib_warning ("stuck clients");
}
}
else
{
tm->prev_conns = vec_len (connections_this_batch);
tm->repeats = 0;
}
for (i = 0; i < vec_len (connections_this_batch); i++)
{
delete_session = 1;
sp = pool_elt_at_index (tm->sessions, connections_this_batch[i]);
if (sp->bytes_to_send > 0)
{
send_test_chunk (tm, sp);
delete_session = 0;
}
if (sp->bytes_to_receive > 0)
{
receive_test_chunk (tm, sp);
delete_session = 0;
}
if (PREDICT_FALSE (delete_session == 1))
{
u32 index, thread_index;
stream_session_t *s;
__sync_fetch_and_add (&tm->tx_total, sp->bytes_sent);
__sync_fetch_and_add (&tm->rx_total, sp->bytes_received);
session_parse_handle (sp->vpp_session_handle,
&index, &thread_index);
s = session_get_if_valid (index, thread_index);
if (s)
{
vnet_disconnect_args_t _a, *a = &_a;
a->handle = session_handle (s);
a->app_index = tm->app_index;
vnet_disconnect_session (a);
vec_delete (connections_this_batch, 1, i);
i--;
__sync_fetch_and_add (&tm->ready_connections, -1);
}
else
clib_warning ("session AWOL?");
/* Kick the debug CLI process */
if (tm->ready_connections == 0)
{
signal_evt_to_cli (2);
}
}
}
tm->connection_index_by_thread[my_thread_index] = connection_indices;
tm->connections_this_batch_by_thread[my_thread_index] =
connections_this_batch;
return 0;
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (builtin_client_node) =
{
.function = builtin_client_node_fn,
.name = "builtin-tcp-client",
.type = VLIB_NODE_TYPE_INPUT,
.state = VLIB_NODE_STATE_DISABLED,
};
/* *INDENT-ON* */
static int
create_api_loopback (tclient_main_t * tm)
{
api_main_t *am = &api_main;
vl_shmem_hdr_t *shmem_hdr;
shmem_hdr = am->shmem_hdr;
tm->vl_input_queue = shmem_hdr->vl_input_queue;
tm->my_client_index =
vl_api_memclnt_create_internal ("tcp_test_client", tm->vl_input_queue);
return 0;
}
static int
tcp_test_clients_init (vlib_main_t * vm)
{
tclient_main_t *tm = &tclient_main;
vlib_thread_main_t *vtm = vlib_get_thread_main ();
u32 num_threads;
int i;
if (create_api_loopback (tm))
return -1;
num_threads = 1 /* main thread */ + vtm->n_threads;
/* Init test data. Big buffer */
vec_validate (tm->connect_test_data, 1024 * 1024 - 1);
for (i = 0; i < vec_len (tm->connect_test_data); i++)
tm->connect_test_data[i] = i & 0xff;
vec_validate (tm->rx_buf, num_threads - 1);
for (i = 0; i < num_threads; i++)
vec_validate (tm->rx_buf[i], vec_len (tm->connect_test_data) - 1);
tm->is_init = 1;
vec_validate (tm->connection_index_by_thread, vtm->n_vlib_mains);
vec_validate (tm->connections_this_batch_by_thread, vtm->n_vlib_mains);
vec_validate (tm->vpp_event_queue, vtm->n_vlib_mains);
return 0;
}
static int
builtin_session_connected_callback (u32 app_index, u32 api_context,
stream_session_t * s, u8 is_fail)
{
tclient_main_t *tm = &tclient_main;
session_t *session;
u32 session_index;
u8 thread_index = vlib_get_thread_index ();
if (is_fail)
{
clib_warning ("connection %d failed!", api_context);
signal_evt_to_cli (-1);
return 0;
}
ASSERT (s->thread_index == thread_index);
if (!tm->vpp_event_queue[thread_index])
tm->vpp_event_queue[thread_index] =
session_manager_get_vpp_event_queue (thread_index);
/*
* Setup session
*/
clib_spinlock_lock_if_init (&tm->sessions_lock);
pool_get (tm->sessions, session);
clib_spinlock_unlock_if_init (&tm->sessions_lock);
memset (session, 0, sizeof (*session));
session_index = session - tm->sessions;
session->bytes_to_send = tm->bytes_to_send;
session->bytes_to_receive = tm->no_return ? 0ULL : tm->bytes_to_send;
session->server_rx_fifo = s->server_rx_fifo;
session->server_rx_fifo->client_session_index = session_index;
session->server_tx_fifo = s->server_tx_fifo;
session->server_tx_fifo->client_session_index = session_index;
session->vpp_session_handle = session_handle (s);
vec_add1 (tm->connection_index_by_thread[thread_index], session_index);
__sync_fetch_and_add (&tm->ready_connections, 1);
if (tm->ready_connections == tm->expected_connections)
{
tm->run_test = 1;
/* Signal the CLI process that the action is starting... */
signal_evt_to_cli (1);
}
return 0;
}
static void
builtin_session_reset_callback (stream_session_t * s)
{
if (s->session_state == SESSION_STATE_READY)
clib_warning ("Reset active connection %U", format_stream_session, s, 2);
stream_session_cleanup (s);
return;
}
static int
builtin_session_create_callback (stream_session_t * s)
{
return 0;
}
static void
builtin_session_disconnect_callback (stream_session_t * s)
{
tclient_main_t *tm = &tclient_main;
vnet_disconnect_args_t _a, *a = &_a;
a->handle = session_handle (s);
a->app_index = tm->app_index;
vnet_disconnect_session (a);
return;
}
static int
builtin_server_rx_callback (stream_session_t * s)
{
return 0;
}
/* *INDENT-OFF* */
static session_cb_vft_t builtin_clients = {
.session_reset_callback = builtin_session_reset_callback,
.session_connected_callback = builtin_session_connected_callback,
.session_accept_callback = builtin_session_create_callback,
.session_disconnect_callback = builtin_session_disconnect_callback,
.builtin_server_rx_callback = builtin_server_rx_callback
};
/* *INDENT-ON* */
static clib_error_t *
attach_builtin_test_clients_app (u8 * appns_id, u64 appns_flags,
u64 appns_secret)
{
u32 segment_name_length, prealloc_fifos, segment_size = 2 << 20;
tclient_main_t *tm = &tclient_main;
vnet_app_attach_args_t _a, *a = &_a;
u8 segment_name[128];
u64 options[16];
clib_error_t *error = 0;
segment_name_length = ARRAY_LEN (segment_name);
memset (a, 0, sizeof (*a));
memset (options, 0, sizeof (options));
a->api_client_index = tm->my_client_index;
a->segment_name = segment_name;
a->segment_name_length = segment_name_length;
a->session_cb_vft = &builtin_clients;
prealloc_fifos = tm->prealloc_fifos ? tm->expected_connections : 1;
if (tm->private_segment_size)
segment_size = tm->private_segment_size;
options[APP_OPTIONS_ACCEPT_COOKIE] = 0x12345678;
options[APP_OPTIONS_SEGMENT_SIZE] = segment_size;
options[APP_OPTIONS_RX_FIFO_SIZE] = tm->fifo_size;
options[APP_OPTIONS_TX_FIFO_SIZE] = tm->fifo_size;
options[APP_OPTIONS_PRIVATE_SEGMENT_COUNT] = tm->private_segment_count;
options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = prealloc_fifos;
options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN;
if (appns_id)
{
options[APP_OPTIONS_FLAGS] |= appns_flags;
options[APP_OPTIONS_NAMESPACE_SECRET] = appns_secret;
}
a->options = options;
a->namespace_id = appns_id;
if ((error = vnet_application_attach (a)))
return error;
tm->app_index = a->app_index;
return 0;
}
static void *
tclient_thread_fn (void *arg)
{
return 0;
}
/** Start a transmit thread */
int
start_tx_pthread (tclient_main_t * tm)
{
if (tm->client_thread_handle == 0)
{
int rv = pthread_create (&tm->client_thread_handle,
NULL /*attr */ ,
tclient_thread_fn, 0);
if (rv)
{
tm->client_thread_handle = 0;
return -1;
}
}
return 0;
}
clib_error_t *
clients_connect (vlib_main_t * vm, u8 * uri, u32 n_clients)
{
tclient_main_t *tm = &tclient_main;
vnet_connect_args_t _a, *a = &_a;
clib_error_t *error = 0;
int i;
for (i = 0; i < n_clients; i++)
{
memset (a, 0, sizeof (*a));
a->uri = (char *) uri;
a->api_context = i;
a->app_index = tm->app_index;
a->mp = 0;
if ((error = vnet_connect_uri (a)))
return error;
/* Crude pacing for call setups */
if ((i % 4) == 0)
vlib_process_suspend (vm, 10e-6);
ASSERT (i + 1 >= tm->ready_connections);
while (i + 1 - tm->ready_connections > 1000)
{
vlib_process_suspend (vm, 100e-6);
}
}
return 0;
}
#define CLI_OUTPUT(_fmt, _args...) \
if (!tm->no_output) \
vlib_cli_output(vm, _fmt, ##_args)
static clib_error_t *
test_tcp_clients_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
tclient_main_t *tm = &tclient_main;
vlib_thread_main_t *thread_main = vlib_get_thread_main ();
uword *event_data = 0, event_type;
u8 *default_connect_uri = (u8 *) "tcp://6.0.1.1/1234", *uri, *appns_id = 0;
u64 tmp, total_bytes, appns_flags = 0, appns_secret = 0;
f64 test_timeout = 20.0, syn_timeout = 20.0, delta;
f64 time_before_connects;
u32 n_clients = 1;
int preallocate_sessions = 0;
char *transfer_type;
clib_error_t *error = 0;
int i;
tm->bytes_to_send = 8192;
tm->no_return = 0;
tm->fifo_size = 64 << 10;
tm->connections_per_batch = 1000;
tm->private_segment_count = 0;
tm->private_segment_size = 0;
tm->no_output = 0;
tm->test_bytes = 0;
tm->test_failed = 0;
tm->vlib_main = vm;
if (thread_main->n_vlib_mains > 1)
clib_spinlock_init (&tm->sessions_lock);
vec_free (tm->connect_uri);
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "nclients %d", &n_clients))
;
else if (unformat (input, "mbytes %lld", &tmp))
tm->bytes_to_send = tmp << 20;
else if (unformat (input, "gbytes %lld", &tmp))
tm->bytes_to_send = tmp << 30;
else if (unformat (input, "bytes %lld", &tm->bytes_to_send))
;
else if (unformat (input, "uri %s", &tm->connect_uri))
;
else if (unformat (input, "test-timeout %f", &test_timeout))
;
else if (unformat (input, "syn-timeout %f", &syn_timeout))
;
else if (unformat (input, "no-return"))
tm->no_return = 1;
else if (unformat (input, "fifo-size %d", &tm->fifo_size))
tm->fifo_size <<= 10;
else if (unformat (input, "private-segment-count %d",
&tm->private_segment_count))
;
else if (unformat (input, "private-segment-size %U",
unformat_memory_size, &tmp))
{
if (tmp >= 0x100000000ULL)
return clib_error_return
(0, "private segment size %lld (%llu) too large", tmp, tmp);
tm->private_segment_size = tmp;
}
else if (unformat (input, "preallocate-fifos"))
tm->prealloc_fifos = 1;
else if (unformat (input, "preallocate-sessions"))
preallocate_sessions = 1;
else
if (unformat (input, "client-batch %d", &tm->connections_per_batch))
;
else if (unformat (input, "appns %_%v%_", &appns_id))
;
else if (unformat (input, "all-scope"))
appns_flags |= (APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE
| APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE);
else if (unformat (input, "local-scope"))
appns_flags = APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE;
else if (unformat (input, "global-scope"))
appns_flags = APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
else if (unformat (input, "secret %lu", &appns_secret))
;
else if (unformat (input, "no-output"))
tm->no_output = 1;
else if (unformat (input, "test-bytes"))
tm->test_bytes = 1;
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
/* Store cli process node index for signalling */
tm->cli_node_index = vlib_get_current_process (vm)->node_runtime.node_index;
if (tm->is_init == 0)
{
if (tcp_test_clients_init (vm))
return clib_error_return (0, "failed init");
}
tm->ready_connections = 0;
tm->expected_connections = n_clients;
tm->rx_total = 0;
tm->tx_total = 0;
uri = default_connect_uri;
if (tm->connect_uri)
uri = tm->connect_uri;
#if TCP_BUILTIN_CLIENT_PTHREAD
start_tx_pthread ();
#endif
vlib_worker_thread_barrier_sync (vm);
vnet_session_enable_disable (vm, 1 /* turn on TCP, etc. */ );
vlib_worker_thread_barrier_release (vm);
if (tm->test_client_attached == 0)
{
if ((error = attach_builtin_test_clients_app (appns_id, appns_flags,
appns_secret)))
{
vec_free (appns_id);
clib_error_report (error);
return error;
}
vec_free (appns_id);
}
tm->test_client_attached = 1;
/* Turn on the builtin client input nodes */
for (i = 0; i < thread_main->n_vlib_mains; i++)
vlib_node_set_state (vlib_mains[i], builtin_client_node.index,
VLIB_NODE_STATE_POLLING);
if (preallocate_sessions)
{
session_t *sp __attribute__ ((unused));
for (i = 0; i < n_clients; i++)
pool_get (tm->sessions, sp);
for (i = 0; i < n_clients; i++)
pool_put_index (tm->sessions, i);
}
/* Fire off connect requests */
time_before_connects = vlib_time_now (vm);
if ((error = clients_connect (vm, uri, n_clients)))
return error;
/* Park until the sessions come up, or ten seconds elapse... */
vlib_process_wait_for_event_or_clock (vm, syn_timeout);
event_type = vlib_process_get_events (vm, &event_data);
switch (event_type)
{
case ~0:
CLI_OUTPUT ("Timeout with only %d sessions active...",
tm->ready_connections);
error = clib_error_return (0, "failed: syn timeout with %d sessions",
tm->ready_connections);
goto cleanup;
case 1:
delta = vlib_time_now (vm) - time_before_connects;
if (delta != 0.0)
CLI_OUTPUT ("%d three-way handshakes in %.2f seconds %.2f/s",
n_clients, delta, ((f64) n_clients) / delta);
tm->test_start_time = vlib_time_now (tm->vlib_main);
CLI_OUTPUT ("Test started at %.6f", tm->test_start_time);
break;
default:
CLI_OUTPUT ("unexpected event(1): %d", event_type);
error = clib_error_return (0, "failed: unexpected event(1): %d",
event_type);
goto cleanup;
}
/* Now wait for the sessions to finish... */
vlib_process_wait_for_event_or_clock (vm, test_timeout);
event_type = vlib_process_get_events (vm, &event_data);
switch (event_type)
{
case ~0:
CLI_OUTPUT ("Timeout with %d sessions still active...",
tm->ready_connections);
error = clib_error_return (0, "failed: timeout with %d sessions",
tm->ready_connections);
goto cleanup;
case 2:
tm->test_end_time = vlib_time_now (vm);
CLI_OUTPUT ("Test finished at %.6f", tm->test_end_time);
break;
default:
CLI_OUTPUT ("unexpected event(2): %d", event_type);
error = clib_error_return (0, "failed: unexpected event(2): %d",
event_type);
goto cleanup;
}
delta = tm->test_end_time - tm->test_start_time;
if (delta != 0.0)
{
total_bytes = (tm->no_return ? tm->tx_total : tm->rx_total);
transfer_type = tm->no_return ? "half-duplex" : "full-duplex";
CLI_OUTPUT ("%lld bytes (%lld mbytes, %lld gbytes) in %.2f seconds",
total_bytes, total_bytes / (1ULL << 20),
total_bytes / (1ULL << 30), delta);
CLI_OUTPUT ("%.2f bytes/second %s", ((f64) total_bytes) / (delta),
transfer_type);
CLI_OUTPUT ("%.4f gbit/second %s",
(((f64) total_bytes * 8.0) / delta / 1e9), transfer_type);
}
else
{
CLI_OUTPUT ("zero delta-t?");
error = clib_error_return (0, "failed: zero delta-t");
goto cleanup;
}
if (tm->test_bytes && tm->test_failed)
error = clib_error_return (0, "failed: test bytes");
cleanup:
tm->run_test = 0;
for (i = 0; i < vec_len (tm->connection_index_by_thread); i++)
{
vec_reset_length (tm->connection_index_by_thread[i]);
vec_reset_length (tm->connections_this_batch_by_thread[i]);
}
pool_free (tm->sessions);
/* Detach the application, so we can use different fifo sizes next time */
if (tm->test_client_attached)
{
vnet_app_detach_args_t _da, *da = &_da;
int rv;
da->app_index = tm->app_index;
rv = vnet_application_detach (da);
if (rv)
{
error = clib_error_return (0, "failed: app detach");
CLI_OUTPUT ("WARNING: app detach failed...");
}
tm->test_client_attached = 0;
tm->app_index = ~0;
}
if (error)
CLI_OUTPUT ("test failed");
return error;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (test_clients_command, static) =
{
.path = "test tcp clients",
.short_help = "test tcp clients [nclients %d] [[m|g]bytes <bytes>] "
"[test-timeout <time>][syn-timeout <time>][no-return][fifo-size <size>]"
"[private-segment-count <count>][private-segment-size <bytes>[m|g]]"
"[preallocate-fifos][preallocate-sessions][client-batch <batch-size>]"
"[uri <tcp://ip/port>][test-bytes][no-output]",
.function = test_tcp_clients_command_fn,
.is_mp_safe = 1,
};
/* *INDENT-ON* */
clib_error_t *
tcp_test_clients_main_init (vlib_main_t * vm)
{
tclient_main_t *tm = &tclient_main;
tm->is_init = 0;
return 0;
}
VLIB_INIT_FUNCTION (tcp_test_clients_main_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/