2 * Copyright (c) 2019 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.
16 #include <vnet/session/application.h>
17 #include <vnet/session/application_interface.h>
18 #include <vnet/session/session.h>
21 * Pool of workers associated to apps
23 static app_worker_t *app_workers;
26 app_worker_alloc (application_t * app)
28 app_worker_t *app_wrk;
30 pool_get (app_workers, app_wrk);
31 clib_memset (app_wrk, 0, sizeof (*app_wrk));
32 app_wrk->wrk_index = app_wrk - app_workers;
33 app_wrk->app_index = app->app_index;
34 app_wrk->wrk_map_index = ~0;
35 app_wrk->connects_seg_manager = APP_INVALID_SEGMENT_MANAGER_INDEX;
36 clib_spinlock_init (&app_wrk->detached_seg_managers_lock);
37 vec_validate (app_wrk->wrk_evts, vlib_num_workers ());
38 vec_validate (app_wrk->wrk_mq_congested, vlib_num_workers ());
39 APP_DBG ("New app %v worker %u", app->name, app_wrk->wrk_index);
44 app_worker_get (u32 wrk_index)
46 return pool_elt_at_index (app_workers, wrk_index);
50 app_worker_get_if_valid (u32 wrk_index)
52 if (pool_is_free_index (app_workers, wrk_index))
54 return pool_elt_at_index (app_workers, wrk_index);
58 app_worker_free (app_worker_t * app_wrk)
60 application_t *app = application_get (app_wrk->app_index);
61 vnet_unlisten_args_t _a, *a = &_a;
62 u64 handle, *handles = 0, *sm_indices = 0;
63 segment_manager_t *sm;
70 * Cleanup vpp wrk events
72 app_worker_del_all_events (app_wrk);
73 for (i = 0; i < vec_len (app_wrk->wrk_evts); i++)
74 clib_fifo_free (app_wrk->wrk_evts[i]);
76 vec_free (app_wrk->wrk_evts);
77 vec_free (app_wrk->wrk_mq_congested);
83 hash_foreach (handle, sm_index, app_wrk->listeners_table, ({
84 ls = listen_session_get_from_handle (handle);
85 vec_add1 (handles, app_listen_session_handle (ls));
86 vec_add1 (sm_indices, sm_index);
87 sm = segment_manager_get (sm_index);
90 for (i = 0; i < vec_len (handles); i++)
92 /* Cleanup listener */
93 a->app_index = app->app_index;
94 a->wrk_map_index = app_wrk->wrk_map_index;
95 a->handle = handles[i];
96 (void) vnet_unlisten (a);
98 sm = segment_manager_get_if_valid (sm_indices[i]);
99 if (sm && !segment_manager_app_detached (sm))
101 sm->first_is_protected = 0;
102 segment_manager_init_free (sm);
105 vec_reset_length (handles);
106 vec_free (sm_indices);
107 hash_free (app_wrk->listeners_table);
110 * Connects segment manager cleanup
113 if (app_wrk->connects_seg_manager != APP_INVALID_SEGMENT_MANAGER_INDEX)
115 sm = segment_manager_get (app_wrk->connects_seg_manager);
116 sm->app_wrk_index = SEGMENT_MANAGER_INVALID_APP_INDEX;
117 sm->first_is_protected = 0;
118 segment_manager_init_free (sm);
125 pool_foreach (sh, app_wrk->half_open_table)
126 session_cleanup_half_open (*sh);
128 pool_free (app_wrk->half_open_table);
131 * Detached listener segment managers cleanup
133 for (i = 0; i < vec_len (app_wrk->detached_seg_managers); i++)
135 sm = segment_manager_get (app_wrk->detached_seg_managers[i]);
136 segment_manager_init_free (sm);
138 vec_free (app_wrk->detached_seg_managers);
139 clib_spinlock_free (&app_wrk->detached_seg_managers_lock);
142 clib_memset (app_wrk, 0xfe, sizeof (*app_wrk));
143 pool_put (app_workers, app_wrk);
147 app_worker_get_app (u32 wrk_index)
149 app_worker_t *app_wrk;
150 app_wrk = app_worker_get_if_valid (wrk_index);
153 return application_get_if_valid (app_wrk->app_index);
156 static segment_manager_t *
157 app_worker_alloc_segment_manager (app_worker_t * app_wrk)
159 segment_manager_t *sm;
161 sm = segment_manager_alloc ();
162 sm->app_wrk_index = app_wrk->wrk_index;
163 segment_manager_init (sm);
168 app_worker_alloc_session_fifos (segment_manager_t * sm, session_t * s)
170 svm_fifo_t *rx_fifo = 0, *tx_fifo = 0;
173 if ((rv = segment_manager_alloc_session_fifos (sm, s->thread_index,
174 &rx_fifo, &tx_fifo)))
177 rx_fifo->shr->master_session_index = s->session_index;
178 rx_fifo->master_thread_index = s->thread_index;
180 tx_fifo->shr->master_session_index = s->session_index;
181 tx_fifo->master_thread_index = s->thread_index;
183 s->rx_fifo = rx_fifo;
184 s->tx_fifo = tx_fifo;
189 app_worker_init_listener (app_worker_t * app_wrk, session_t * ls)
191 segment_manager_t *sm;
193 /* Allocate segment manager. All sessions derived out of a listen session
194 * have fifos allocated by the same segment manager. */
195 if (!(sm = app_worker_alloc_segment_manager (app_wrk)))
196 return SESSION_E_ALLOC;
198 /* Once the first segment is mapped, don't remove it until unlisten */
199 sm->first_is_protected = 1;
201 /* Keep track of the segment manager for the listener or this worker */
202 hash_set (app_wrk->listeners_table, listen_session_get_handle (ls),
203 segment_manager_index (sm));
205 if (transport_connection_is_cless (session_get_transport (ls)))
208 return SESSION_E_NOSUPPORT;
209 return app_worker_alloc_session_fifos (sm, ls);
215 app_worker_start_listen (app_worker_t *app_wrk, app_listener_t *app_listener)
220 if (clib_bitmap_get (app_listener->workers, app_wrk->wrk_map_index))
221 return SESSION_E_ALREADY_LISTENING;
223 app_listener->workers = clib_bitmap_set (app_listener->workers,
224 app_wrk->wrk_map_index, 1);
226 if (app_listener->session_index != SESSION_INVALID_INDEX)
228 ls = session_get (app_listener->session_index, 0);
229 if ((rv = app_worker_init_listener (app_wrk, ls)))
233 if (app_listener->local_index != SESSION_INVALID_INDEX)
235 ls = session_get (app_listener->local_index, 0);
236 if ((rv = app_worker_init_listener (app_wrk, ls)))
244 app_worker_add_detached_sm (app_worker_t * app_wrk, u32 sm_index)
246 vec_add1 (app_wrk->detached_seg_managers, sm_index);
250 app_worker_del_detached_sm (app_worker_t * app_wrk, u32 sm_index)
254 clib_spinlock_lock (&app_wrk->detached_seg_managers_lock);
255 for (i = 0; i < vec_len (app_wrk->detached_seg_managers); i++)
257 if (app_wrk->detached_seg_managers[i] == sm_index)
259 vec_del1 (app_wrk->detached_seg_managers, i);
263 clib_spinlock_unlock (&app_wrk->detached_seg_managers_lock);
267 app_worker_stop_listen_session (app_worker_t * app_wrk, session_t * ls)
269 session_handle_t handle;
270 segment_manager_t *sm;
272 session_state_t *states = 0;
274 handle = listen_session_get_handle (ls);
275 sm_indexp = hash_get (app_wrk->listeners_table, handle);
276 if (PREDICT_FALSE (!sm_indexp))
279 /* Dealloc fifos, if any (dgram listeners) */
282 segment_manager_dealloc_fifos (ls->rx_fifo, ls->tx_fifo);
283 ls->tx_fifo = ls->rx_fifo = 0;
286 /* Try to cleanup segment manager */
287 sm = segment_manager_get (*sm_indexp);
290 sm->first_is_protected = 0;
291 segment_manager_app_detach (sm);
292 if (!segment_manager_has_fifos (sm))
294 /* Empty segment manager, cleanup it up */
295 segment_manager_free (sm);
299 /* Delete sessions in CREATED state */
300 vec_add1 (states, SESSION_STATE_CREATED);
301 segment_manager_del_sessions_filter (sm, states);
304 /* Track segment manager in case app detaches and all the
305 * outstanding sessions need to be closed */
306 app_worker_add_detached_sm (app_wrk, *sm_indexp);
307 sm->flags |= SEG_MANAGER_F_DETACHED_LISTENER;
311 hash_unset (app_wrk->listeners_table, handle);
315 app_worker_stop_listen (app_worker_t * app_wrk, app_listener_t * al)
319 if (!clib_bitmap_get (al->workers, app_wrk->wrk_map_index))
322 if (al->session_index != SESSION_INVALID_INDEX)
324 ls = listen_session_get (al->session_index);
325 app_worker_stop_listen_session (app_wrk, ls);
328 if (al->local_index != SESSION_INVALID_INDEX)
330 ls = listen_session_get (al->local_index);
331 app_worker_stop_listen_session (app_wrk, ls);
334 clib_bitmap_set_no_check (al->workers, app_wrk->wrk_map_index, 0);
335 if (clib_bitmap_is_zero (al->workers))
336 app_listener_cleanup (al);
342 app_worker_init_accepted (session_t * s)
344 app_worker_t *app_wrk;
345 segment_manager_t *sm;
349 listener = listen_session_get_from_handle (s->listener_handle);
350 app_wrk = application_listener_select_worker (listener);
351 if (PREDICT_FALSE (app_worker_mq_is_congested (app_wrk)))
354 s->app_wrk_index = app_wrk->wrk_index;
355 app = application_get (app_wrk->app_index);
356 if (app->cb_fns.fifo_tuning_callback)
357 s->flags |= SESSION_F_CUSTOM_FIFO_TUNING;
359 sm = app_worker_get_listen_segment_manager (app_wrk, listener);
360 if (app_worker_alloc_session_fifos (sm, s))
367 app_worker_listened_notify (app_worker_t *app_wrk, session_handle_t alsh,
368 u32 opaque, session_error_t err)
370 session_event_t evt = { .event_type = SESSION_CTRL_EVT_BOUND,
372 .as_u64[1] = (u64) opaque << 32 | err };
374 app_worker_add_event_custom (app_wrk, 0 /* thread index */, &evt);
380 app_worker_unlisten_reply (app_worker_t *app_wrk, session_handle_t sh,
381 u32 opaque, session_error_t err)
383 session_event_t evt = { .event_type = SESSION_CTRL_EVT_UNLISTEN_REPLY,
385 .as_u64[1] = (u64) opaque << 32 | (u32) err };
387 app_worker_add_event_custom (app_wrk, 0 /* thread index */, &evt);
392 app_worker_accept_notify (app_worker_t * app_wrk, session_t * s)
394 app_worker_add_event (app_wrk, s, SESSION_CTRL_EVT_ACCEPTED);
399 app_worker_init_connected (app_worker_t * app_wrk, session_t * s)
401 application_t *app = application_get (app_wrk->app_index);
402 segment_manager_t *sm;
404 if (app->cb_fns.fifo_tuning_callback)
405 s->flags |= SESSION_F_CUSTOM_FIFO_TUNING;
407 /* Allocate fifos for session, unless the app is a builtin proxy */
408 if (application_is_builtin_proxy (app))
409 return app->cb_fns.proxy_alloc_session_fifos (s);
411 sm = app_worker_get_connect_segment_manager (app_wrk);
412 return app_worker_alloc_session_fifos (sm, s);
416 app_worker_connect_notify (app_worker_t * app_wrk, session_t * s,
417 session_error_t err, u32 opaque)
419 session_event_t evt = { .event_type = SESSION_CTRL_EVT_CONNECTED,
420 .as_u64[0] = s ? s->session_index : ~0,
421 .as_u64[1] = (u64) opaque << 32 | (u32) err };
422 u32 thread_index = s ? s->thread_index : vlib_get_thread_index ();
424 app_worker_add_event_custom (app_wrk, thread_index, &evt);
429 app_worker_add_half_open (app_worker_t *app_wrk, session_handle_t sh)
431 session_handle_t *shp;
433 ASSERT (session_vlib_thread_is_cl_thread ());
434 pool_get (app_wrk->half_open_table, shp);
437 return (shp - app_wrk->half_open_table);
441 app_worker_del_half_open (app_worker_t *app_wrk, session_t *s)
443 app_worker_add_event (app_wrk, s, SESSION_CTRL_EVT_HALF_CLEANUP);
448 app_worker_close_notify (app_worker_t * app_wrk, session_t * s)
450 app_worker_add_event (app_wrk, s, SESSION_CTRL_EVT_DISCONNECTED);
455 app_worker_transport_closed_notify (app_worker_t * app_wrk, session_t * s)
457 app_worker_add_event (app_wrk, s, SESSION_CTRL_EVT_TRANSPORT_CLOSED);
462 app_worker_reset_notify (app_worker_t * app_wrk, session_t * s)
464 app_worker_add_event (app_wrk, s, SESSION_CTRL_EVT_RESET);
469 app_worker_cleanup_notify (app_worker_t * app_wrk, session_t * s,
470 session_cleanup_ntf_t ntf)
472 session_event_t evt = { .event_type = SESSION_CTRL_EVT_CLEANUP,
473 .as_u64[0] = (u64) ntf << 32 | s->session_index,
474 .as_u64[1] = pointer_to_uword (session_cleanup) };
476 app_worker_add_event_custom (app_wrk, s->thread_index, &evt);
482 app_worker_cleanup_notify_custom (app_worker_t *app_wrk, session_t *s,
483 session_cleanup_ntf_t ntf,
484 void (*cleanup_cb) (session_t *s))
486 session_event_t evt = { .event_type = SESSION_CTRL_EVT_CLEANUP,
487 .as_u64[0] = (u64) ntf << 32 | s->session_index,
488 .as_u64[1] = pointer_to_uword (cleanup_cb) };
490 app_worker_add_event_custom (app_wrk, s->thread_index, &evt);
496 app_worker_rx_notify (app_worker_t *app_wrk, session_t *s)
498 app_worker_add_event (app_wrk, s, SESSION_IO_EVT_RX);
503 app_worker_migrate_notify (app_worker_t * app_wrk, session_t * s,
504 session_handle_t new_sh)
506 session_event_t evt = { .event_type = SESSION_CTRL_EVT_MIGRATED,
507 .as_u64[0] = s->session_index,
508 .as_u64[1] = new_sh };
510 app_worker_add_event_custom (app_wrk, s->thread_index, &evt);
515 app_worker_own_session (app_worker_t * app_wrk, session_t * s)
517 segment_manager_t *sm;
518 svm_fifo_t *rxf, *txf;
521 if (s->session_state == SESSION_STATE_LISTENING)
522 return application_change_listener_owner (s, app_wrk);
524 s->app_wrk_index = app_wrk->wrk_index;
535 sm = app_worker_get_connect_segment_manager (app_wrk);
536 if ((rv = app_worker_alloc_session_fifos (sm, s)))
539 if (!svm_fifo_is_empty_cons (rxf))
540 svm_fifo_clone (s->rx_fifo, rxf);
542 if (!svm_fifo_is_empty_cons (txf))
543 svm_fifo_clone (s->tx_fifo, txf);
545 segment_manager_dealloc_fifos (rxf, txf);
551 app_worker_connect_session (app_worker_t *app_wrk, session_endpoint_cfg_t *sep,
552 session_handle_t *rsh)
554 if (PREDICT_FALSE (app_worker_mq_is_congested (app_wrk)))
555 return SESSION_E_REFUSED;
557 sep->app_wrk_index = app_wrk->wrk_index;
559 return session_open (sep, rsh);
563 app_worker_session_fifo_tuning (app_worker_t * app_wrk, session_t * s,
565 session_ft_action_t act, u32 len)
567 application_t *app = application_get (app_wrk->app_index);
568 return app->cb_fns.fifo_tuning_callback (s, f, act, len);
572 app_worker_get_connect_segment_manager (app_worker_t * app)
574 ASSERT (app->connects_seg_manager != (u32) ~ 0);
575 return segment_manager_get (app->connects_seg_manager);
579 app_worker_get_listen_segment_manager (app_worker_t * app,
580 session_t * listener)
583 smp = hash_get (app->listeners_table, listen_session_get_handle (listener));
584 ALWAYS_ASSERT (smp != 0);
585 return segment_manager_get (*smp);
589 app_worker_first_listener (app_worker_t * app_wrk, u8 fib_proto,
597 sst = session_type_from_proto_and_ip (transport_proto,
598 fib_proto == FIB_PROTOCOL_IP4);
601 hash_foreach (handle, sm_index, app_wrk->listeners_table, ({
602 listener = listen_session_get_from_handle (handle);
603 if (listener->session_type == sst
604 && !(listener->flags & SESSION_F_PROXY))
613 app_worker_proxy_listener (app_worker_t * app_wrk, u8 fib_proto,
621 sst = session_type_from_proto_and_ip (transport_proto,
622 fib_proto == FIB_PROTOCOL_IP4);
625 hash_foreach (handle, sm_index, app_wrk->listeners_table, ({
626 listener = listen_session_get_from_handle (handle);
627 if (listener->session_type == sst && (listener->flags & SESSION_F_PROXY))
636 * Send an API message to the external app, to map new segment
639 app_worker_add_segment_notify (app_worker_t * app_wrk, u64 segment_handle)
641 session_event_t evt = { .event_type = SESSION_CTRL_EVT_APP_ADD_SEGMENT,
642 .as_u64[1] = segment_handle };
644 app_worker_add_event_custom (app_wrk, vlib_get_thread_index (), &evt);
650 app_worker_del_segment_notify (app_worker_t * app_wrk, u64 segment_handle)
652 session_event_t evt = { .event_type = SESSION_CTRL_EVT_APP_DEL_SEGMENT,
653 .as_u64[1] = segment_handle };
655 app_worker_add_event_custom (app_wrk, vlib_get_thread_index (), &evt);
661 app_wrk_send_fd (app_worker_t *app_wrk, int fd)
663 if (!appns_sapi_enabled ())
665 vl_api_registration_t *reg;
669 vl_mem_api_client_index_to_registration (app_wrk->api_client_index);
672 clib_warning ("no api registration for client: %u",
673 app_wrk->api_client_index);
677 if (vl_api_registration_file_index (reg) == VL_API_INVALID_FI)
680 error = vl_api_send_fd_msg (reg, &fd, 1);
683 clib_error_report (error);
690 app_sapi_msg_t smsg = { 0 };
691 app_namespace_t *app_ns;
697 app = application_get (app_wrk->app_index);
698 app_ns = app_namespace_get (app->ns_index);
699 cs_index = appns_sapi_handle_sock_index (app_wrk->api_client_index);
700 cs = appns_sapi_get_socket (app_ns, cs_index);
701 if (PREDICT_FALSE (!cs))
704 /* There's no payload for the message only the type */
705 smsg.type = APP_SAPI_MSG_TYPE_SEND_FDS;
706 error = clib_socket_sendmsg (cs, &smsg, sizeof (smsg), &fd, 1);
709 clib_error_report (error);
717 app_worker_add_event (app_worker_t *app_wrk, session_t *s,
718 session_evt_type_t evt_type)
720 session_event_t *evt;
722 ASSERT (s->thread_index == vlib_get_thread_index ());
723 clib_fifo_add2 (app_wrk->wrk_evts[s->thread_index], evt);
724 evt->session_index = s->session_index;
725 evt->event_type = evt_type;
728 /* First event for this app_wrk. Schedule it for handling in session input */
729 if (clib_fifo_elts (app_wrk->wrk_evts[s->thread_index]) == 1)
731 session_worker_t *wrk = session_main_get_worker (s->thread_index);
732 session_wrk_program_app_wrk_evts (wrk, app_wrk->wrk_index);
737 app_worker_add_event_custom (app_worker_t *app_wrk, u32 thread_index,
738 session_event_t *evt)
740 clib_fifo_add1 (app_wrk->wrk_evts[thread_index], *evt);
742 /* First event for this app_wrk. Schedule it for handling in session input */
743 if (clib_fifo_elts (app_wrk->wrk_evts[thread_index]) == 1)
745 session_worker_t *wrk = session_main_get_worker (thread_index);
746 session_wrk_program_app_wrk_evts (wrk, app_wrk->wrk_index);
751 app_wrk_send_ctrl_evt_inline (app_worker_t *app_wrk, u8 evt_type, void *msg,
754 svm_msg_q_msg_t _mq_msg, *mq_msg = &_mq_msg;
755 svm_msg_q_t *mq = app_wrk->event_queue;
756 session_event_t *evt;
758 ASSERT (!svm_msg_q_or_ring_is_full (mq, SESSION_MQ_CTRL_EVT_RING));
759 *mq_msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_CTRL_EVT_RING);
761 evt = svm_msg_q_msg_data (mq, mq_msg);
762 clib_memset (evt, 0, sizeof (*evt));
763 evt->event_type = evt_type;
764 clib_memcpy_fast (evt->data, msg, msg_len);
767 app_wrk_send_fd (app_wrk, fd);
769 svm_msg_q_add_raw (mq, mq_msg);
773 app_wrk_send_ctrl_evt_fd (app_worker_t *app_wrk, u8 evt_type, void *msg,
776 app_wrk_send_ctrl_evt_inline (app_wrk, evt_type, msg, msg_len, fd);
780 app_wrk_send_ctrl_evt (app_worker_t *app_wrk, u8 evt_type, void *msg,
783 app_wrk_send_ctrl_evt_inline (app_wrk, evt_type, msg, msg_len, -1);
787 app_worker_mq_wrk_is_congested (app_worker_t *app_wrk, u32 thread_index)
789 return app_wrk->wrk_mq_congested[thread_index] > 0;
793 app_worker_set_mq_wrk_congested (app_worker_t *app_wrk, u32 thread_index)
795 clib_atomic_fetch_add_relax (&app_wrk->mq_congested, 1);
796 ASSERT (thread_index == vlib_get_thread_index ());
797 app_wrk->wrk_mq_congested[thread_index] = 1;
801 app_worker_unset_wrk_mq_congested (app_worker_t *app_wrk, u32 thread_index)
803 clib_atomic_fetch_sub_relax (&app_wrk->mq_congested, 1);
804 ASSERT (thread_index == vlib_get_thread_index ());
805 app_wrk->wrk_mq_congested[thread_index] = 0;
809 format_app_worker_listener (u8 * s, va_list * args)
811 app_worker_t *app_wrk = va_arg (*args, app_worker_t *);
812 u64 handle = va_arg (*args, u64);
813 u32 sm_index = va_arg (*args, u32);
814 int verbose = va_arg (*args, int);
822 s = format (s, "%-" SESSION_CLI_ID_LEN "s%-25s%-10s%-15s%-15s%-10s",
823 "Connection", "App", "Wrk", "API Client", "ListenerID",
826 s = format (s, "%-" SESSION_CLI_ID_LEN "s%-25s%-10s", "Connection",
832 app_name = application_name_from_index (app_wrk->app_index);
833 listener = listen_session_get_from_handle (handle);
834 str = format (0, "%U", format_session, listener, verbose);
839 buf = format (0, "%u(%u)", app_wrk->wrk_map_index, app_wrk->wrk_index);
840 s = format (s, "%-" SESSION_CLI_ID_LEN "v%-25v%-10v%-15u%-15u%-10u", str,
841 app_name, buf, app_wrk->api_client_index, handle, sm_index);
845 s = format (s, "%-" SESSION_CLI_ID_LEN "v%-25v%=10u", str, app_name,
846 app_wrk->wrk_map_index);
854 format_app_worker (u8 * s, va_list * args)
856 app_worker_t *app_wrk = va_arg (*args, app_worker_t *);
860 "%U wrk-index %u app-index %u map-index %u "
861 "api-client-index %d mq-cong %u\n",
862 format_white_space, indent, app_wrk->wrk_index,
863 app_wrk->app_index, app_wrk->wrk_map_index,
864 app_wrk->api_client_index, app_wrk->mq_congested);
869 app_worker_format_connects (app_worker_t * app_wrk, int verbose)
871 segment_manager_t *sm;
876 segment_manager_format_sessions (0, verbose);
880 if (app_wrk->connects_seg_manager == (u32) ~ 0)
883 sm = segment_manager_get (app_wrk->connects_seg_manager);
884 segment_manager_format_sessions (sm, verbose);
888 * fd.io coding-style-patch-verification: ON
891 * eval: (c-set-style "gnu")