2 * Copyright (c) 2018 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 <vppinfra/mem.h>
17 #include <vlib/vlib.h>
18 #include <vlib/unix/unix.h>
19 #include "stat_segment.h"
20 #include <vnet/vnet.h>
21 #include <vnet/devices/devices.h> /* vnet_get_aggregate_rx_packets */
22 #undef HAVE_MEMFD_CREATE
23 #include <vppinfra/linux/syscall.h>
24 #include <vpp-api/client/stat_client.h>
26 stat_segment_main_t stat_segment_main;
29 * Used only by VPP writers
32 vlib_stat_segment_lock (void)
34 stat_segment_main_t *sm = &stat_segment_main;
35 clib_spinlock_lock (sm->stat_segment_lockp);
36 sm->shared_header->in_progress = 1;
40 vlib_stat_segment_unlock (void)
42 stat_segment_main_t *sm = &stat_segment_main;
43 sm->shared_header->epoch++;
44 sm->shared_header->in_progress = 0;
45 clib_spinlock_unlock (sm->stat_segment_lockp);
49 * Change heap to the stats shared memory segment
52 vlib_stats_push_heap (void *old)
54 stat_segment_main_t *sm = &stat_segment_main;
57 ASSERT (sm && sm->shared_header);
58 return clib_mem_set_heap (sm->heap);
61 /* Name to vector index hash */
63 lookup_or_create_hash_index (void *oldheap, char *name, u32 next_vector_index)
65 stat_segment_main_t *sm = &stat_segment_main;
69 hp = hash_get_pair (sm->directory_vector_by_name, name);
72 hash_set (sm->directory_vector_by_name, name, next_vector_index);
73 index = next_vector_index;
84 vlib_stats_pop_heap (void *cm_arg, void *oldheap, u32 cindex,
85 stat_directory_type_t type)
87 vlib_simple_counter_main_t *cm = (vlib_simple_counter_main_t *) cm_arg;
88 stat_segment_main_t *sm = &stat_segment_main;
89 stat_segment_shared_header_t *shared_header = sm->shared_header;
90 char *stat_segment_name;
91 stat_segment_directory_entry_t e = { 0 };
93 /* Not all counters have names / hash-table entries */
94 if (!cm->name && !cm->stat_segment_name)
96 clib_mem_set_heap (oldheap);
100 ASSERT (shared_header);
102 vlib_stat_segment_lock ();
104 /* Lookup hash-table is on the main heap */
106 cm->stat_segment_name ? cm->stat_segment_name : cm->name;
107 u32 next_vector_index = vec_len (sm->directory_vector);
108 clib_mem_set_heap (oldheap); /* Exit stats segment */
109 u32 vector_index = lookup_or_create_hash_index (oldheap, stat_segment_name,
111 /* Back to stats segment */
112 clib_mem_set_heap (sm->heap); /* Re-enter stat segment */
115 /* Update the vector */
116 if (vector_index == next_vector_index)
118 strncpy (e.name, stat_segment_name, 128 - 1);
120 vec_add1 (sm->directory_vector, e);
123 stat_segment_directory_entry_t *ep = &sm->directory_vector[vector_index];
124 ep->offset = stat_segment_offset (shared_header, cm->counters); /* Vector of threads of vectors of counters */
126 ep->offset_vector ? stat_segment_pointer (shared_header,
127 ep->offset_vector) : 0;
129 /* Update the 2nd dimension offset vector */
131 vec_validate (offset_vector, vec_len (cm->counters) - 1);
133 if (sm->last != offset_vector)
135 for (i = 0; i < vec_len (cm->counters); i++)
137 stat_segment_offset (shared_header, cm->counters[i]);
140 offset_vector[cindex] =
141 stat_segment_offset (shared_header, cm->counters[cindex]);
143 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
144 sm->directory_vector[vector_index].offset =
145 stat_segment_offset (shared_header, cm->counters);
147 /* Reset the client hash table pointer, since it WILL change! */
148 shared_header->directory_offset =
149 stat_segment_offset (shared_header, sm->directory_vector);
151 vlib_stat_segment_unlock ();
152 clib_mem_set_heap (oldheap);
156 vlib_stats_register_error_index (u8 * name, u64 * em_vec, u64 index)
158 stat_segment_main_t *sm = &stat_segment_main;
159 stat_segment_shared_header_t *shared_header = sm->shared_header;
160 stat_segment_directory_entry_t e;
162 ASSERT (shared_header);
164 vlib_stat_segment_lock ();
166 memcpy (e.name, name, vec_len (name));
167 e.name[vec_len (name)] = '\0';
168 e.type = STAT_DIR_TYPE_ERROR_INDEX;
171 vec_add1 (sm->directory_vector, e);
173 /* Warn clients to refresh any pointers they might be holding */
174 shared_header->directory_offset =
175 stat_segment_offset (shared_header, sm->directory_vector);
177 vlib_stat_segment_unlock ();
181 stat_validate_counter_vector (stat_segment_directory_entry_t * ep, u32 max)
183 stat_segment_main_t *sm = &stat_segment_main;
184 stat_segment_shared_header_t *shared_header = sm->shared_header;
185 counter_t **counters = 0;
186 vlib_thread_main_t *tm = vlib_get_thread_main ();
188 u64 *offset_vector = 0;
190 vec_validate_aligned (counters, tm->n_vlib_mains - 1,
191 CLIB_CACHE_LINE_BYTES);
192 for (i = 0; i < tm->n_vlib_mains; i++)
194 vec_validate_aligned (counters[i], max, CLIB_CACHE_LINE_BYTES);
195 vec_add1 (offset_vector,
196 stat_segment_offset (shared_header, counters[i]));
198 ep->offset = stat_segment_offset (shared_header, counters);
199 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
203 vlib_stats_pop_heap2 (u64 * error_vector, u32 thread_index, void *oldheap,
206 stat_segment_main_t *sm = &stat_segment_main;
207 stat_segment_shared_header_t *shared_header = sm->shared_header;
209 ASSERT (shared_header);
212 vlib_stat_segment_lock ();
214 /* Reset the client hash table pointer, since it WILL change! */
215 vec_validate (sm->error_vector, thread_index);
216 sm->error_vector[thread_index] =
217 stat_segment_offset (shared_header, error_vector);
219 shared_header->error_offset =
220 stat_segment_offset (shared_header, sm->error_vector);
221 shared_header->directory_offset =
222 stat_segment_offset (shared_header, sm->directory_vector);
225 vlib_stat_segment_unlock ();
226 clib_mem_set_heap (oldheap);
230 vlib_map_stat_segment_init (void)
232 stat_segment_main_t *sm = &stat_segment_main;
233 stat_segment_shared_header_t *shared_header;
237 char *mem_name = "stat_segment_test";
240 memory_size = sm->memory_size;
241 if (memory_size == 0)
242 memory_size = STAT_SEGMENT_DEFAULT_SIZE;
244 /* Create shared memory segment */
245 if ((mfd = memfd_create (mem_name, 0)) < 0)
246 return clib_error_return (0, "stat segment memfd_create failure");
249 if ((ftruncate (mfd, memory_size)) == -1)
250 return clib_error_return (0, "stat segment ftruncate failure");
253 mmap (NULL, memory_size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd,
255 return clib_error_return (0, "stat segment mmap failure");
258 #if USE_DLMALLOC == 0
259 heap = mheap_alloc_with_flags (((u8 *) memaddr) + getpagesize (),
260 memory_size - getpagesize (),
261 MHEAP_FLAG_DISABLE_VM |
262 MHEAP_FLAG_THREAD_SAFE);
265 create_mspace_with_base (((u8 *) memaddr) + getpagesize (),
266 memory_size - getpagesize (), 1 /* locked */ );
267 mspace_disable_expand (heap);
273 sm->directory_vector_by_name = hash_create_string (0, sizeof (uword));
274 sm->shared_header = shared_header = memaddr;
276 shared_header->version = STAT_SEGMENT_VERSION;
278 sm->stat_segment_lockp = clib_mem_alloc (sizeof (clib_spinlock_t));
279 clib_spinlock_init (sm->stat_segment_lockp);
281 oldheap = clib_mem_set_heap (sm->heap);
283 /* Set up the name to counter-vector hash table */
284 sm->directory_vector = 0;
286 shared_header->epoch = 1;
288 /* Scalar stats and node counters */
289 vec_validate (sm->directory_vector, STAT_COUNTERS - 1);
291 strcpy(sm->directory_vector[STAT_COUNTER_##E].name, #p "/" #n); \
292 sm->directory_vector[STAT_COUNTER_##E].type = STAT_DIR_TYPE_##t;
293 foreach_stat_segment_counter_name
295 /* Save the vector offset in the shared segment, for clients */
296 shared_header->directory_offset =
297 stat_segment_offset (shared_header, sm->directory_vector);
299 clib_mem_set_heap (oldheap);
305 name_sort_cmp (void *a1, void *a2)
307 stat_segment_directory_entry_t *n1 = a1;
308 stat_segment_directory_entry_t *n2 = a2;
310 return strcmp ((char *) n1->name, (char *) n2->name);
314 format_stat_dir_entry (u8 * s, va_list * args)
316 stat_segment_directory_entry_t *ep =
317 va_arg (*args, stat_segment_directory_entry_t *);
321 format_string = "%-74s %-10s %10lld";
325 case STAT_DIR_TYPE_SCALAR_INDEX:
326 type_name = "ScalarPtr";
329 case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE:
330 case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED:
331 type_name = "CMainPtr";
334 case STAT_DIR_TYPE_ERROR_INDEX:
335 type_name = "ErrIndex";
339 type_name = "illegal!";
343 return format (s, format_string, ep->name, type_name, ep->offset);
346 static clib_error_t *
347 show_stat_segment_command_fn (vlib_main_t * vm,
348 unformat_input_t * input,
349 vlib_cli_command_t * cmd)
351 stat_segment_main_t *sm = &stat_segment_main;
352 stat_segment_directory_entry_t *show_data;
357 if (unformat (input, "verbose"))
360 /* Lock even as reader, as this command doesn't handle epoch changes */
361 vlib_stat_segment_lock ();
362 show_data = vec_dup (sm->directory_vector);
363 vlib_stat_segment_unlock ();
365 vec_sort_with_function (show_data, name_sort_cmp);
367 vlib_cli_output (vm, "%-74s %10s %10s", "Name", "Type", "Value");
369 for (i = 0; i < vec_len (show_data); i++)
371 vlib_cli_output (vm, "%-100U", format_stat_dir_entry,
372 vec_elt_at_index (show_data, i));
378 vlib_cli_output (vm, "%U", format_mheap, sm->heap, 0 /* verbose */ );
385 VLIB_CLI_COMMAND (show_stat_segment_command, static) =
387 .path = "show statistics segment",
388 .short_help = "show statistics segment [verbose]",
389 .function = show_stat_segment_command_fn,
394 * Node performance counters:
395 * total_calls [threads][node-index]
402 update_node_counters (stat_segment_main_t * sm)
404 vlib_main_t **stat_vms = 0;
405 vlib_node_t ***node_dups = 0;
407 stat_segment_shared_header_t *shared_header = sm->shared_header;
408 static u32 no_max_nodes = 0;
410 vlib_node_get_nodes (0 /* vm, for barrier sync */ ,
411 (u32) ~ 0 /* all threads */ ,
412 1 /* include stats */ ,
413 0 /* barrier sync */ ,
414 &node_dups, &stat_vms);
416 u32 l = vec_len (node_dups[0]);
419 * Extend performance nodes if necessary
421 if (l > no_max_nodes)
423 void *oldheap = clib_mem_set_heap (sm->heap);
424 vlib_stat_segment_lock ();
426 stat_validate_counter_vector (&sm->directory_vector
427 [STAT_COUNTER_NODE_CLOCKS], l);
428 stat_validate_counter_vector (&sm->directory_vector
429 [STAT_COUNTER_NODE_VECTORS], l);
430 stat_validate_counter_vector (&sm->directory_vector
431 [STAT_COUNTER_NODE_CALLS], l);
432 stat_validate_counter_vector (&sm->directory_vector
433 [STAT_COUNTER_NODE_SUSPENDS], l);
435 vec_validate (sm->nodes, l - 1);
436 stat_segment_directory_entry_t *ep;
437 ep = &sm->directory_vector[STAT_COUNTER_NODE_NAMES];
438 ep->offset = stat_segment_offset (shared_header, sm->nodes);
442 ep->offset_vector ? stat_segment_pointer (shared_header,
443 ep->offset_vector) : 0;
444 /* Update names dictionary */
445 vec_validate (offset_vector, l - 1);
446 vlib_node_t **nodes = node_dups[0];
448 for (i = 0; i < vec_len (nodes); i++)
450 vlib_node_t *n = nodes[i];
452 s = format (s, "%v%c", n->name, 0);
453 if (sm->nodes[n->index])
454 vec_free (sm->nodes[n->index]);
455 sm->nodes[n->index] = s;
457 sm->nodes[i] ? stat_segment_offset (shared_header,
461 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
463 vlib_stat_segment_unlock ();
464 clib_mem_set_heap (oldheap);
468 for (j = 0; j < vec_len (node_dups); j++)
470 vlib_node_t **nodes = node_dups[j];
472 for (i = 0; i < vec_len (nodes); i++)
474 counter_t **counters;
476 vlib_node_t *n = nodes[i];
479 stat_segment_pointer (shared_header,
481 [STAT_COUNTER_NODE_CLOCKS].offset);
483 c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks;
486 stat_segment_pointer (shared_header,
488 [STAT_COUNTER_NODE_VECTORS].offset);
490 c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors;
493 stat_segment_pointer (shared_header,
495 [STAT_COUNTER_NODE_CALLS].offset);
497 c[n->index] = n->stats_total.calls - n->stats_last_clear.calls;
500 stat_segment_pointer (shared_header,
502 [STAT_COUNTER_NODE_SUSPENDS].offset);
505 n->stats_total.suspends - n->stats_last_clear.suspends;
511 do_stat_segment_updates (stat_segment_main_t * sm)
513 stat_segment_shared_header_t *shared_header = sm->shared_header;
514 vlib_main_t *vm = vlib_mains[0];
518 vlib_main_t *this_vlib_main;
520 counter_t **counters;
521 static int num_worker_threads_set;
524 * Set once at the beginning of time.
525 * Can't do this from the init routine, which happens before
526 * start_workers sets up vlib_mains...
528 if (PREDICT_FALSE (num_worker_threads_set == 0))
530 sm->directory_vector[STAT_COUNTER_NUM_WORKER_THREADS].value =
531 vec_len (vlib_mains) > 1 ? vec_len (vlib_mains) - 1 : 1;
533 stat_validate_counter_vector (&sm->directory_vector
534 [STAT_COUNTER_VECTOR_RATE_PER_WORKER],
535 vec_len (vlib_mains));
536 num_worker_threads_set = 1;
540 * Compute per-worker vector rates, and the average vector rate
546 stat_segment_pointer (shared_header,
548 [STAT_COUNTER_VECTOR_RATE_PER_WORKER].offset);
550 start = vec_len (vlib_mains) > 1 ? 1 : 0;
552 for (i = start; i < vec_len (vlib_mains); i++)
555 f64 this_vector_rate;
557 this_vlib_main = vlib_mains[i];
559 this_vector_rate = vlib_last_vector_length_per_node (this_vlib_main);
560 vector_rate += this_vector_rate;
562 /* Set the per-worker rate */
563 counters[i - start][0] = this_vector_rate;
566 /* And set the system average rate */
567 vector_rate /= (f64) (i - start);
569 sm->directory_vector[STAT_COUNTER_VECTOR_RATE].value = vector_rate;
572 * Compute the aggregate input rate
574 now = vlib_time_now (vm);
575 dt = now - sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value;
576 input_packets = vnet_get_aggregate_rx_packets ();
577 sm->directory_vector[STAT_COUNTER_INPUT_RATE].value =
578 (f64) (input_packets - sm->last_input_packets) / dt;
579 sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value = now;
580 sm->last_input_packets = input_packets;
581 sm->directory_vector[STAT_COUNTER_LAST_STATS_CLEAR].value =
582 vm->node_main.time_last_runtime_stats_clear;
584 if (sm->node_counters_enabled)
585 update_node_counters (sm);
588 stat_segment_gauges_pool_t *g;
589 pool_foreach(g, sm->gauges,
591 g->fn(&sm->directory_vector[g->directory_index], g->caller_index);
595 /* Heartbeat, so clients detect we're still here */
596 sm->directory_vector[STAT_COUNTER_HEARTBEAT].value++;
600 * Accept connection on the socket and exchange the fd for the shared
603 static clib_error_t *
604 stats_socket_accept_ready (clib_file_t * uf)
606 stat_segment_main_t *sm = &stat_segment_main;
608 clib_socket_t client = { 0 };
610 err = clib_socket_accept (sm->socket, &client);
613 clib_error_report (err);
617 /* Send the fd across and close */
618 err = clib_socket_sendmsg (&client, 0, 0, &sm->memfd, 1);
620 clib_error_report (err);
621 clib_socket_close (&client);
627 stats_segment_socket_init (void)
629 stat_segment_main_t *sm = &stat_segment_main;
631 clib_socket_t *s = clib_mem_alloc (sizeof (clib_socket_t));
633 memset (s, 0, sizeof (clib_socket_t));
634 s->config = (char *) sm->socket_name;
635 s->flags = CLIB_SOCKET_F_IS_SERVER | CLIB_SOCKET_F_SEQPACKET |
636 CLIB_SOCKET_F_ALLOW_GROUP_WRITE | CLIB_SOCKET_F_PASSCRED;
638 if ((error = clib_socket_init (s)))
640 clib_error_report (error);
644 clib_file_t template = { 0 };
645 template.read_function = stats_socket_accept_ready;
646 template.file_descriptor = s->fd;
647 template.description = format (0, "stats segment listener %s", s->config);
648 clib_file_add (&file_main, &template);
653 static clib_error_t *
654 stats_segment_socket_exit (vlib_main_t * vm)
657 * cleanup the listener socket on exit.
659 stat_segment_main_t *sm = &stat_segment_main;
660 unlink ((char *) sm->socket_name);
664 VLIB_MAIN_LOOP_EXIT_FUNCTION (stats_segment_socket_exit);
667 stat_segment_collector_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
670 stat_segment_main_t *sm = &stat_segment_main;
672 /* Wait for Godot... */
673 f64 sleep_duration = 10;
677 do_stat_segment_updates (sm);
678 vlib_process_suspend (vm, sleep_duration);
680 return 0; /* or not */
683 static clib_error_t *
684 statseg_init (vlib_main_t * vm)
686 stat_segment_main_t *sm = &stat_segment_main;
689 stats_segment_socket_init ();
695 VLIB_INIT_FUNCTION (statseg_init) =
697 .runs_after = VLIB_INITS("unix_input_init"),
703 stat_segment_register_gauge (u8 * name, stat_segment_update_fn update_fn,
706 stat_segment_main_t *sm = &stat_segment_main;
707 stat_segment_shared_header_t *shared_header = sm->shared_header;
709 stat_segment_directory_entry_t e;
711 stat_segment_gauges_pool_t *gauge;
713 ASSERT (shared_header);
715 oldheap = vlib_stats_push_heap (NULL);
716 vlib_stat_segment_lock ();
718 memset (&e, 0, sizeof (e));
719 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
721 memcpy (e.name, name, vec_len (name));
722 index = vec_len (sm->directory_vector);
723 vec_add1 (sm->directory_vector, e);
725 shared_header->directory_offset =
726 stat_segment_offset (shared_header, sm->directory_vector);
728 vlib_stat_segment_unlock ();
729 clib_mem_set_heap (oldheap);
731 /* Back on our own heap */
732 pool_get (sm->gauges, gauge);
733 gauge->fn = update_fn;
734 gauge->caller_index = caller_index;
735 gauge->directory_index = index;
740 static clib_error_t *
741 statseg_config (vlib_main_t * vm, unformat_input_t * input)
743 stat_segment_main_t *sm = &stat_segment_main;
745 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
747 if (unformat (input, "socket-name %s", &sm->socket_name))
749 else if (unformat (input, "default"))
751 vec_reset_length (sm->socket_name);
752 sm->socket_name = format (sm->socket_name, "%s",
753 STAT_SEGMENT_SOCKET_FILE);
755 else if (unformat (input, "size %U",
756 unformat_memory_size, &sm->memory_size))
758 else if (unformat (input, "per-node-counters on"))
759 sm->node_counters_enabled = 1;
760 else if (unformat (input, "per-node-counters off"))
761 sm->node_counters_enabled = 0;
763 return clib_error_return (0, "unknown input `%U'",
764 format_unformat_error, input);
767 /* set default socket file name when statseg config stanza is empty. */
768 if (!vec_len (sm->socket_name))
769 sm->socket_name = format (sm->socket_name, "%s",
770 STAT_SEGMENT_SOCKET_FILE);
772 * NULL-terminate socket name string
773 * clib_socket_init()->socket_config() use C str*
775 vec_terminate_c_string (sm->socket_name);
780 static clib_error_t *
781 statseg_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
783 stat_segment_main_t *sm = &stat_segment_main;
784 stat_segment_shared_header_t *shared_header = sm->shared_header;
786 void *oldheap = vlib_stats_push_heap (sm->interfaces);
787 vlib_stat_segment_lock ();
789 vec_validate (sm->interfaces, sw_if_index);
792 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
793 vnet_sw_interface_t *si_sup =
794 vnet_get_sup_sw_interface (vnm, si->sw_if_index);
795 vnet_hw_interface_t *hi_sup;
797 ASSERT (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
798 hi_sup = vnet_get_hw_interface (vnm, si_sup->hw_if_index);
801 s = format (s, "%v", hi_sup->name);
802 if (si->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
803 s = format (s, ".%d", si->sub.id);
804 s = format (s, "%c", 0);
805 sm->interfaces[sw_if_index] = s;
809 vec_free (sm->interfaces[sw_if_index]);
810 sm->interfaces[sw_if_index] = 0;
813 stat_segment_directory_entry_t *ep;
814 ep = &sm->directory_vector[STAT_COUNTER_INTERFACE_NAMES];
815 ep->offset = stat_segment_offset (shared_header, sm->interfaces);
819 ep->offset_vector ? stat_segment_pointer (shared_header,
820 ep->offset_vector) : 0;
822 vec_validate (offset_vector, vec_len (sm->interfaces) - 1);
824 if (sm->last != sm->interfaces)
826 /* the interface vector moved, so need to recalulate the offset array */
827 for (i = 0; i < vec_len (sm->interfaces); i++)
830 sm->interfaces[i] ? stat_segment_offset (shared_header,
831 sm->interfaces[i]) : 0;
836 offset_vector[sw_if_index] =
837 sm->interfaces[sw_if_index] ?
838 stat_segment_offset (shared_header, sm->interfaces[sw_if_index]) : 0;
840 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
842 vlib_stat_segment_unlock ();
843 clib_mem_set_heap (oldheap);
848 VLIB_EARLY_CONFIG_FUNCTION (statseg_config, "statseg");
849 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (statseg_sw_interface_add_del);
852 VLIB_REGISTER_NODE (stat_segment_collector, static) =
854 .function = stat_segment_collector_process,
855 .name = "statseg-collector-process",
856 .type = VLIB_NODE_TYPE_PROCESS,
862 * fd.io coding-style-patch-verification: ON
865 * eval: (c-set-style "gnu")