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;
163 ASSERT (shared_header);
165 vlib_stat_segment_lock ();
167 memcpy (e.name, name, vec_len (name));
168 e.name[vec_len (name)] = '\0';
169 e.type = STAT_DIR_TYPE_ERROR_INDEX;
172 vec_add1 (sm->directory_vector, e);
174 /* Warn clients to refresh any pointers they might be holding */
175 shared_header->directory_offset =
176 stat_segment_offset (shared_header, sm->directory_vector);
178 vlib_stat_segment_unlock ();
182 stat_validate_counter_vector (stat_segment_directory_entry_t * ep, u32 max)
184 stat_segment_main_t *sm = &stat_segment_main;
185 stat_segment_shared_header_t *shared_header = sm->shared_header;
186 counter_t **counters = 0;
187 vlib_thread_main_t *tm = vlib_get_thread_main ();
189 u64 *offset_vector = 0;
191 vec_validate_aligned (counters, tm->n_vlib_mains - 1,
192 CLIB_CACHE_LINE_BYTES);
193 for (i = 0; i < tm->n_vlib_mains; i++)
195 vec_validate_aligned (counters[i], max, CLIB_CACHE_LINE_BYTES);
196 vec_add1 (offset_vector,
197 stat_segment_offset (shared_header, counters[i]));
199 ep->offset = stat_segment_offset (shared_header, counters);
200 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
204 vlib_stats_pop_heap2 (u64 * error_vector, u32 thread_index, void *oldheap,
207 stat_segment_main_t *sm = &stat_segment_main;
208 stat_segment_shared_header_t *shared_header = sm->shared_header;
210 ASSERT (shared_header);
213 vlib_stat_segment_lock ();
215 /* Reset the client hash table pointer, since it WILL change! */
216 vec_validate (sm->error_vector, thread_index);
217 sm->error_vector[thread_index] =
218 stat_segment_offset (shared_header, error_vector);
220 shared_header->error_offset =
221 stat_segment_offset (shared_header, sm->error_vector);
222 shared_header->directory_offset =
223 stat_segment_offset (shared_header, sm->directory_vector);
226 vlib_stat_segment_unlock ();
227 clib_mem_set_heap (oldheap);
231 vlib_map_stat_segment_init (void)
233 stat_segment_main_t *sm = &stat_segment_main;
234 stat_segment_shared_header_t *shared_header;
235 stat_segment_directory_entry_t *ep;
239 char *mem_name = "stat_segment_test";
242 memory_size = sm->memory_size;
243 if (memory_size == 0)
244 memory_size = STAT_SEGMENT_DEFAULT_SIZE;
246 /* Create shared memory segment */
247 if ((mfd = memfd_create (mem_name, 0)) < 0)
248 return clib_error_return (0, "stat segment memfd_create failure");
251 if ((ftruncate (mfd, memory_size)) == -1)
252 return clib_error_return (0, "stat segment ftruncate failure");
255 mmap (NULL, memory_size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd,
257 return clib_error_return (0, "stat segment mmap failure");
260 #if USE_DLMALLOC == 0
261 heap = mheap_alloc_with_flags (((u8 *) memaddr) + getpagesize (),
262 memory_size - getpagesize (),
263 MHEAP_FLAG_DISABLE_VM |
264 MHEAP_FLAG_THREAD_SAFE);
267 create_mspace_with_base (((u8 *) memaddr) + getpagesize (),
268 memory_size - getpagesize (), 1 /* locked */ );
269 mspace_disable_expand (heap);
275 sm->directory_vector_by_name = hash_create_string (0, sizeof (uword));
276 sm->shared_header = shared_header = memaddr;
277 sm->stat_segment_lockp = clib_mem_alloc (sizeof (clib_spinlock_t));
278 clib_spinlock_init (sm->stat_segment_lockp);
280 oldheap = clib_mem_set_heap (sm->heap);
282 /* Set up the name to counter-vector hash table */
283 sm->directory_vector = 0;
285 shared_header->epoch = 1;
287 /* Scalar stats and node counters */
288 vec_validate (sm->directory_vector, STAT_COUNTERS - 1);
290 strcpy(sm->directory_vector[STAT_COUNTER_##E].name, #p "/" #n); \
291 sm->directory_vector[STAT_COUNTER_##E].type = STAT_DIR_TYPE_##t;
292 foreach_stat_segment_counter_name
294 /* Save the vector offset in the shared segment, for clients */
295 shared_header->directory_offset =
296 stat_segment_offset (shared_header, sm->directory_vector);
298 clib_mem_set_heap (oldheap);
304 name_sort_cmp (void *a1, void *a2)
306 stat_segment_directory_entry_t *n1 = a1;
307 stat_segment_directory_entry_t *n2 = a2;
309 return strcmp ((char *) n1->name, (char *) n2->name);
313 format_stat_dir_entry (u8 * s, va_list * args)
315 stat_segment_directory_entry_t *ep =
316 va_arg (*args, stat_segment_directory_entry_t *);
320 format_string = "%-74s %-10s %10lld";
324 case STAT_DIR_TYPE_SCALAR_INDEX:
325 type_name = "ScalarPtr";
328 case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE:
329 case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED:
330 type_name = "CMainPtr";
333 case STAT_DIR_TYPE_ERROR_INDEX:
334 type_name = "ErrIndex";
338 type_name = "illegal!";
342 return format (s, format_string, ep->name, type_name, ep->offset);
345 static clib_error_t *
346 show_stat_segment_command_fn (vlib_main_t * vm,
347 unformat_input_t * input,
348 vlib_cli_command_t * cmd)
350 stat_segment_main_t *sm = &stat_segment_main;
353 stat_segment_directory_entry_t *show_data, *this;
359 if (unformat (input, "verbose"))
362 /* Lock even as reader, as this command doesn't handle epoch changes */
363 vlib_stat_segment_lock ();
364 show_data = vec_dup (sm->directory_vector);
365 vlib_stat_segment_unlock ();
367 vec_sort_with_function (show_data, name_sort_cmp);
369 vlib_cli_output (vm, "%-74s %10s %10s", "Name", "Type", "Value");
371 for (i = 0; i < vec_len (show_data); i++)
373 vlib_cli_output (vm, "%-100U", format_stat_dir_entry,
374 vec_elt_at_index (show_data, i));
380 vlib_cli_output (vm, "%U", format_mheap, sm->heap, 0 /* verbose */ );
387 VLIB_CLI_COMMAND (show_stat_segment_command, static) =
389 .path = "show statistics segment",
390 .short_help = "show statistics segment [verbose]",
391 .function = show_stat_segment_command_fn,
396 * Node performance counters:
397 * total_calls [threads][node-index]
404 update_node_counters (stat_segment_main_t * sm)
406 vlib_main_t *vm = vlib_mains[0];
407 vlib_main_t **stat_vms = 0;
408 vlib_node_t ***node_dups = 0;
410 stat_segment_shared_header_t *shared_header = sm->shared_header;
411 static u32 no_max_nodes = 0;
413 vlib_node_get_nodes (0 /* vm, for barrier sync */ ,
414 (u32) ~ 0 /* all threads */ ,
415 1 /* include stats */ ,
416 0 /* barrier sync */ ,
417 &node_dups, &stat_vms);
419 u32 l = vec_len (node_dups[0]);
422 * Extend performance nodes if necessary
424 if (l > no_max_nodes)
426 void *oldheap = clib_mem_set_heap (sm->heap);
427 vlib_stat_segment_lock ();
429 stat_validate_counter_vector (&sm->directory_vector
430 [STAT_COUNTER_NODE_CLOCKS], l);
431 stat_validate_counter_vector (&sm->directory_vector
432 [STAT_COUNTER_NODE_VECTORS], l);
433 stat_validate_counter_vector (&sm->directory_vector
434 [STAT_COUNTER_NODE_CALLS], l);
435 stat_validate_counter_vector (&sm->directory_vector
436 [STAT_COUNTER_NODE_SUSPENDS], l);
438 vec_validate (sm->nodes, l - 1);
439 stat_segment_directory_entry_t *ep;
440 ep = &sm->directory_vector[STAT_COUNTER_NODE_NAMES];
441 ep->offset = stat_segment_offset (shared_header, sm->nodes);
445 ep->offset_vector ? stat_segment_pointer (shared_header,
446 ep->offset_vector) : 0;
447 /* Update names dictionary */
448 vec_validate (offset_vector, l - 1);
449 vlib_node_t **nodes = node_dups[0];
451 for (i = 0; i < vec_len (nodes); i++)
453 vlib_node_t *n = nodes[i];
455 s = format (s, "%v%c", n->name, 0);
456 if (sm->nodes[n->index])
457 vec_free (sm->nodes[n->index]);
458 sm->nodes[n->index] = s;
460 sm->nodes[i] ? stat_segment_offset (shared_header,
464 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
466 vlib_stat_segment_unlock ();
467 clib_mem_set_heap (oldheap);
471 for (j = 0; j < vec_len (node_dups); j++)
473 vlib_node_t **nodes = node_dups[j];
474 u32 l = vec_len (nodes);
476 for (i = 0; i < vec_len (nodes); i++)
478 counter_t **counters;
480 vlib_node_t *n = nodes[i];
483 stat_segment_pointer (shared_header,
485 [STAT_COUNTER_NODE_CLOCKS].offset);
487 c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks;
490 stat_segment_pointer (shared_header,
492 [STAT_COUNTER_NODE_VECTORS].offset);
494 c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors;
497 stat_segment_pointer (shared_header,
499 [STAT_COUNTER_NODE_CALLS].offset);
501 c[n->index] = n->stats_total.calls - n->stats_last_clear.calls;
504 stat_segment_pointer (shared_header,
506 [STAT_COUNTER_NODE_SUSPENDS].offset);
509 n->stats_total.suspends - n->stats_last_clear.suspends;
515 do_stat_segment_updates (stat_segment_main_t * sm)
517 stat_segment_shared_header_t *shared_header = sm->shared_header;
518 vlib_main_t *vm = vlib_mains[0];
520 u64 input_packets, last_input_packets;
522 vlib_main_t *this_vlib_main;
524 counter_t **counters;
525 static int num_worker_threads_set;
528 * Set once at the beginning of time.
529 * Can't do this from the init routine, which happens before
530 * start_workers sets up vlib_mains...
532 if (PREDICT_FALSE (num_worker_threads_set == 0))
534 sm->directory_vector[STAT_COUNTER_NUM_WORKER_THREADS].value =
535 vec_len (vlib_mains) > 1 ? vec_len (vlib_mains) - 1 : 1;
537 stat_validate_counter_vector (&sm->directory_vector
538 [STAT_COUNTER_VECTOR_RATE_PER_WORKER],
539 vec_len (vlib_mains));
540 num_worker_threads_set = 1;
544 * Compute per-worker vector rates, and the average vector rate
550 stat_segment_pointer (shared_header,
552 [STAT_COUNTER_VECTOR_RATE_PER_WORKER].offset);
554 start = vec_len (vlib_mains) > 1 ? 1 : 0;
556 for (i = start; i < vec_len (vlib_mains); i++)
559 f64 this_vector_rate;
561 this_vlib_main = vlib_mains[i];
563 this_vector_rate = vlib_last_vector_length_per_node (this_vlib_main);
564 vector_rate += this_vector_rate;
566 /* Set the per-worker rate */
567 counters[i - start][0] = this_vector_rate;
570 /* And set the system average rate */
571 vector_rate /= (f64) (i - start);
573 sm->directory_vector[STAT_COUNTER_VECTOR_RATE].value = vector_rate;
576 * Compute the aggregate input rate
578 now = vlib_time_now (vm);
579 dt = now - sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value;
580 input_packets = vnet_get_aggregate_rx_packets ();
581 sm->directory_vector[STAT_COUNTER_INPUT_RATE].value =
582 (f64) (input_packets - sm->last_input_packets) / dt;
583 sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value = now;
584 sm->last_input_packets = input_packets;
585 sm->directory_vector[STAT_COUNTER_LAST_STATS_CLEAR].value =
586 vm->node_main.time_last_runtime_stats_clear;
588 if (sm->node_counters_enabled)
589 update_node_counters (sm);
592 stat_segment_gauges_pool_t *g;
593 pool_foreach(g, sm->gauges,
595 g->fn(&sm->directory_vector[g->directory_index], g->caller_index);
599 /* Heartbeat, so clients detect we're still here */
600 sm->directory_vector[STAT_COUNTER_HEARTBEAT].value++;
604 * Accept connection on the socket and exchange the fd for the shared
607 static clib_error_t *
608 stats_socket_accept_ready (clib_file_t * uf)
610 stat_segment_main_t *sm = &stat_segment_main;
612 clib_socket_t client = { 0 };
614 err = clib_socket_accept (sm->socket, &client);
617 clib_error_report (err);
621 /* Send the fd across and close */
622 err = clib_socket_sendmsg (&client, 0, 0, &sm->memfd, 1);
624 clib_error_report (err);
625 clib_socket_close (&client);
631 stats_segment_socket_init (void)
633 stat_segment_main_t *sm = &stat_segment_main;
635 clib_socket_t *s = clib_mem_alloc (sizeof (clib_socket_t));
637 memset (s, 0, sizeof (clib_socket_t));
638 s->config = (char *) sm->socket_name;
639 s->flags = CLIB_SOCKET_F_IS_SERVER | CLIB_SOCKET_F_SEQPACKET |
640 CLIB_SOCKET_F_ALLOW_GROUP_WRITE | CLIB_SOCKET_F_PASSCRED;
642 if ((error = clib_socket_init (s)))
644 clib_error_report (error);
648 clib_file_t template = { 0 };
649 template.read_function = stats_socket_accept_ready;
650 template.file_descriptor = s->fd;
651 template.description = format (0, "stats segment listener %s", s->config);
652 clib_file_add (&file_main, &template);
657 static clib_error_t *
658 stats_segment_socket_exit (vlib_main_t * vm)
661 * cleanup the listener socket on exit.
663 stat_segment_main_t *sm = &stat_segment_main;
664 unlink ((char *) sm->socket_name);
668 VLIB_MAIN_LOOP_EXIT_FUNCTION (stats_segment_socket_exit);
671 stat_segment_collector_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
674 stat_segment_main_t *sm = &stat_segment_main;
676 /* Wait for Godot... */
677 f64 sleep_duration = 10;
681 do_stat_segment_updates (sm);
682 vlib_process_suspend (vm, sleep_duration);
684 return 0; /* or not */
687 static clib_error_t *
688 statseg_init (vlib_main_t * vm)
690 stat_segment_main_t *sm = &stat_segment_main;
693 stats_segment_socket_init ();
699 VLIB_INIT_FUNCTION (statseg_init) =
701 .runs_after = VLIB_INITS("unix_input_init"),
707 stat_segment_register_gauge (u8 * name, stat_segment_update_fn update_fn,
710 stat_segment_main_t *sm = &stat_segment_main;
711 stat_segment_shared_header_t *shared_header = sm->shared_header;
713 stat_segment_directory_entry_t e;
715 stat_segment_gauges_pool_t *gauge;
717 ASSERT (shared_header);
719 oldheap = vlib_stats_push_heap (NULL);
720 vlib_stat_segment_lock ();
722 memset (&e, 0, sizeof (e));
723 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
725 memcpy (e.name, name, vec_len (name));
726 index = vec_len (sm->directory_vector);
727 vec_add1 (sm->directory_vector, e);
729 shared_header->directory_offset =
730 stat_segment_offset (shared_header, sm->directory_vector);
732 vlib_stat_segment_unlock ();
733 clib_mem_set_heap (oldheap);
735 /* Back on our own heap */
736 pool_get (sm->gauges, gauge);
737 gauge->fn = update_fn;
738 gauge->caller_index = caller_index;
739 gauge->directory_index = index;
744 static clib_error_t *
745 statseg_config (vlib_main_t * vm, unformat_input_t * input)
747 stat_segment_main_t *sm = &stat_segment_main;
749 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
751 if (unformat (input, "socket-name %s", &sm->socket_name))
753 else if (unformat (input, "default"))
755 vec_reset_length (sm->socket_name);
756 sm->socket_name = format (sm->socket_name, "%s",
757 STAT_SEGMENT_SOCKET_FILE);
759 else if (unformat (input, "size %U",
760 unformat_memory_size, &sm->memory_size))
762 else if (unformat (input, "per-node-counters on"))
763 sm->node_counters_enabled = 1;
764 else if (unformat (input, "per-node-counters off"))
765 sm->node_counters_enabled = 0;
767 return clib_error_return (0, "unknown input `%U'",
768 format_unformat_error, input);
771 /* set default socket file name when statseg config stanza is empty. */
772 if (!vec_len (sm->socket_name))
773 sm->socket_name = format (sm->socket_name, "%s",
774 STAT_SEGMENT_SOCKET_FILE);
776 * NULL-terminate socket name string
777 * clib_socket_init()->socket_config() use C str*
779 vec_terminate_c_string (sm->socket_name);
784 static clib_error_t *
785 statseg_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
787 stat_segment_main_t *sm = &stat_segment_main;
788 stat_segment_shared_header_t *shared_header = sm->shared_header;
790 void *oldheap = vlib_stats_push_heap (sm->interfaces);
791 vlib_stat_segment_lock ();
793 vec_validate (sm->interfaces, sw_if_index);
796 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
797 vnet_sw_interface_t *si_sup =
798 vnet_get_sup_sw_interface (vnm, si->sw_if_index);
799 vnet_hw_interface_t *hi_sup;
801 ASSERT (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
802 hi_sup = vnet_get_hw_interface (vnm, si_sup->hw_if_index);
805 s = format (s, "%v", hi_sup->name);
806 if (si->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
807 s = format (s, ".%d", si->sub.id);
808 s = format (s, "%c", 0);
809 sm->interfaces[sw_if_index] = s;
813 vec_free (sm->interfaces[sw_if_index]);
814 sm->interfaces[sw_if_index] = 0;
817 stat_segment_directory_entry_t *ep;
818 ep = &sm->directory_vector[STAT_COUNTER_INTERFACE_NAMES];
819 ep->offset = stat_segment_offset (shared_header, sm->interfaces);
823 ep->offset_vector ? stat_segment_pointer (shared_header,
824 ep->offset_vector) : 0;
826 vec_validate (offset_vector, vec_len (sm->interfaces) - 1);
828 if (sm->last != sm->interfaces)
830 /* the interface vector moved, so need to recalulate the offset array */
831 for (i = 0; i < vec_len (sm->interfaces); i++)
834 sm->interfaces[i] ? stat_segment_offset (shared_header,
835 sm->interfaces[i]) : 0;
840 offset_vector[sw_if_index] =
841 sm->interfaces[sw_if_index] ?
842 stat_segment_offset (shared_header, sm->interfaces[sw_if_index]) : 0;
844 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
846 vlib_stat_segment_unlock ();
847 clib_mem_set_heap (oldheap);
852 VLIB_EARLY_CONFIG_FUNCTION (statseg_config, "statseg");
853 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (statseg_sw_interface_add_del);
856 VLIB_REGISTER_NODE (stat_segment_collector, static) =
858 .function = stat_segment_collector_process,
859 .name = "statseg-collector-process",
860 .type = VLIB_NODE_TYPE_PROCESS,
866 * fd.io coding-style-patch-verification: ON
869 * eval: (c-set-style "gnu")