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authorMarco Varlese <marco.varlese@suse.com>2017-10-30 18:17:21 +0100
committerFlorin Coras <florin.coras@gmail.com>2018-01-24 15:45:35 +0000
commit191a59401c0552e5ea79041f34456eb9fcc1f311 (patch)
tree286d871aee72cb37e6d751715e89c6b178c7b527 /src/vnet/sctp/builtin_client.c
parentce111d2ee3bacec2a09d8f5b664dcfafa0dd50c7 (diff)
SCTP stack (RFC4960)
== CONTENT == * SCTP chunks definition as per RFC4960; * Helper functions to set/get values to/from the corresponding chunks; * Hooks to the session/application layers; * Complete state-machine handling; * Implementation for unexpected chunk received in a certain state (state-machine error handling) * Support for 1-single connection; * Sample application to test receive/transmit data-path; * Test to validate SCTP stack; Change-Id: I1b55c455ab400be9513f4e094dadfc3181d2ebc9 Signed-off-by: Marco Varlese <marco.varlese@suse.com>
Diffstat (limited to 'src/vnet/sctp/builtin_client.c')
-rw-r--r--src/vnet/sctp/builtin_client.c834
1 files changed, 834 insertions, 0 deletions
diff --git a/src/vnet/sctp/builtin_client.c b/src/vnet/sctp/builtin_client.c
new file mode 100644
index 00000000000..4e50c0ae2ea
--- /dev/null
+++ b/src/vnet/sctp/builtin_client.c
@@ -0,0 +1,834 @@
+/*
+ * Copyright (c) 2018 SUSE LLC.
+ * 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/sctp/builtin_client.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vpp/app/version.h>
+
+tclient_main_t tclient_main;
+
+#define SCTP_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 (SCTP_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 (SCTP_BUILTIN_CLIENT_DBG)
+ clib_warning ("Receiving test chunk; n_read = %d", n_read);
+
+ if (n_read > 0)
+ {
+ if (SCTP_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;
+ }
+ }
+ }
+
+ if (s->bytes_to_receive < n_read)
+ {
+ s->bytes_to_receive = 0;
+ s->bytes_received += s->bytes_received;
+ }
+ else
+ {
+ 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_sctp_client_node) =
+{
+ .function = builtin_client_node_fn,
+ .name = "builtin-sctp-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 ("sctp_test_client", tm->vl_input_queue);
+ return 0;
+}
+
+static int
+sctp_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_sctp (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_sctp (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_sctp_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 *) "sctp://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 (sctp_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 SCTP_BUILTIN_CLIENT_PTHREAD
+ start_tx_pthread ();
+#endif
+
+ vlib_worker_thread_barrier_sync (vm);
+ vnet_session_enable_disable (vm, 1 /* turn on SCTP, 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_sctp_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_sctp (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 (%f) with %d sessions",
+ syn_timeout, 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 sctp clients",
+ .short_help = "test sctp 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 <sctp://ip/port>][test-bytes][no-output]",
+ .function = test_sctp_clients_command_fn,
+ .is_mp_safe = 1,
+};
+/* *INDENT-ON* */
+
+clib_error_t *
+sctp_test_clients_main_init (vlib_main_t * vm)
+{
+ tclient_main_t *tm = &tclient_main;
+ tm->is_init = 0;
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (sctp_test_clients_main_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */