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>
25 #include <vppinfra/mheap.h>
27 stat_segment_main_t stat_segment_main;
30 * Used only by VPP writers
33 vlib_stat_segment_lock (void)
35 stat_segment_main_t *sm = &stat_segment_main;
36 clib_spinlock_lock (sm->stat_segment_lockp);
37 sm->shared_header->in_progress = 1;
41 vlib_stat_segment_unlock (void)
43 stat_segment_main_t *sm = &stat_segment_main;
44 sm->shared_header->epoch++;
45 sm->shared_header->in_progress = 0;
46 clib_spinlock_unlock (sm->stat_segment_lockp);
50 * Change heap to the stats shared memory segment
53 vlib_stats_push_heap (void *old)
55 stat_segment_main_t *sm = &stat_segment_main;
58 ASSERT (sm && sm->shared_header);
59 return clib_mem_set_heap (sm->heap);
63 lookup_or_create_hash_index (u8 * name, u32 next_vector_index)
65 stat_segment_main_t *sm = &stat_segment_main;
69 /* Must be called in the context of the main heap */
70 ASSERT (clib_mem_get_heap != sm->heap);
72 hp = hash_get_pair (sm->directory_vector_by_name, name);
75 hash_set (sm->directory_vector_by_name, name, next_vector_index);
76 index = next_vector_index;
87 vlib_stats_pop_heap (void *cm_arg, void *oldheap, u32 cindex,
88 stat_directory_type_t type)
90 vlib_simple_counter_main_t *cm = (vlib_simple_counter_main_t *) cm_arg;
91 stat_segment_main_t *sm = &stat_segment_main;
92 stat_segment_shared_header_t *shared_header = sm->shared_header;
93 char *stat_segment_name;
94 stat_segment_directory_entry_t e = { 0 };
96 /* Not all counters have names / hash-table entries */
97 if (!cm->name && !cm->stat_segment_name)
99 clib_mem_set_heap (oldheap);
103 ASSERT (shared_header);
105 vlib_stat_segment_lock ();
107 /* Lookup hash-table is on the main heap */
109 cm->stat_segment_name ? cm->stat_segment_name : cm->name;
110 u32 next_vector_index = vec_len (sm->directory_vector);
111 clib_mem_set_heap (oldheap); /* Exit stats segment */
112 u32 vector_index = lookup_or_create_hash_index ((u8 *) stat_segment_name,
114 /* Back to stats segment */
115 clib_mem_set_heap (sm->heap); /* Re-enter stat segment */
118 /* Update the vector */
119 if (vector_index == next_vector_index)
121 strncpy (e.name, stat_segment_name, 128 - 1);
123 vec_add1 (sm->directory_vector, e);
126 stat_segment_directory_entry_t *ep = &sm->directory_vector[vector_index];
127 ep->offset = stat_segment_offset (shared_header, cm->counters); /* Vector of threads of vectors of counters */
129 ep->offset_vector ? stat_segment_pointer (shared_header,
130 ep->offset_vector) : 0;
132 /* Update the 2nd dimension offset vector */
134 vec_validate (offset_vector, vec_len (cm->counters) - 1);
136 if (sm->last != offset_vector)
138 for (i = 0; i < vec_len (cm->counters); i++)
140 stat_segment_offset (shared_header, cm->counters[i]);
143 offset_vector[cindex] =
144 stat_segment_offset (shared_header, cm->counters[cindex]);
146 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
147 sm->directory_vector[vector_index].offset =
148 stat_segment_offset (shared_header, cm->counters);
150 /* Reset the client hash table pointer, since it WILL change! */
151 shared_header->directory_offset =
152 stat_segment_offset (shared_header, sm->directory_vector);
154 vlib_stat_segment_unlock ();
155 clib_mem_set_heap (oldheap);
159 vlib_stats_register_error_index (void *oldheap, u8 * name, u64 * em_vec,
162 stat_segment_main_t *sm = &stat_segment_main;
163 stat_segment_shared_header_t *shared_header = sm->shared_header;
164 stat_segment_directory_entry_t e;
166 ASSERT (shared_header);
168 vlib_stat_segment_lock ();
169 u32 next_vector_index = vec_len (sm->directory_vector);
170 clib_mem_set_heap (oldheap); /* Exit stats segment */
172 u32 vector_index = lookup_or_create_hash_index (name,
175 /* Back to stats segment */
176 clib_mem_set_heap (sm->heap); /* Re-enter stat segment */
178 if (next_vector_index == vector_index)
180 memcpy (e.name, name, vec_len (name));
181 e.name[vec_len (name)] = '\0';
182 e.type = STAT_DIR_TYPE_ERROR_INDEX;
185 vec_add1 (sm->directory_vector, e);
187 /* Warn clients to refresh any pointers they might be holding */
188 shared_header->directory_offset =
189 stat_segment_offset (shared_header, sm->directory_vector);
196 vlib_stat_segment_unlock ();
200 stat_validate_counter_vector (stat_segment_directory_entry_t * ep, u32 max)
202 stat_segment_main_t *sm = &stat_segment_main;
203 stat_segment_shared_header_t *shared_header = sm->shared_header;
204 counter_t **counters = 0;
205 vlib_thread_main_t *tm = vlib_get_thread_main ();
207 u64 *offset_vector = 0;
209 vec_validate_aligned (counters, tm->n_vlib_mains - 1,
210 CLIB_CACHE_LINE_BYTES);
211 for (i = 0; i < tm->n_vlib_mains; i++)
213 vec_validate_aligned (counters[i], max, CLIB_CACHE_LINE_BYTES);
214 vec_add1 (offset_vector,
215 stat_segment_offset (shared_header, counters[i]));
217 ep->offset = stat_segment_offset (shared_header, counters);
218 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
222 vlib_stats_pop_heap2 (u64 * error_vector, u32 thread_index, void *oldheap,
225 stat_segment_main_t *sm = &stat_segment_main;
226 stat_segment_shared_header_t *shared_header = sm->shared_header;
228 ASSERT (shared_header);
231 vlib_stat_segment_lock ();
233 /* Reset the client hash table pointer, since it WILL change! */
234 vec_validate (sm->error_vector, thread_index);
235 sm->error_vector[thread_index] =
236 stat_segment_offset (shared_header, error_vector);
238 shared_header->error_offset =
239 stat_segment_offset (shared_header, sm->error_vector);
240 shared_header->directory_offset =
241 stat_segment_offset (shared_header, sm->directory_vector);
244 vlib_stat_segment_unlock ();
245 clib_mem_set_heap (oldheap);
249 vlib_map_stat_segment_init (void)
251 stat_segment_main_t *sm = &stat_segment_main;
252 stat_segment_shared_header_t *shared_header;
256 char *mem_name = "stat_segment_test";
259 memory_size = sm->memory_size;
260 if (memory_size == 0)
261 memory_size = STAT_SEGMENT_DEFAULT_SIZE;
263 /* Create shared memory segment */
264 if ((mfd = memfd_create (mem_name, 0)) < 0)
265 return clib_error_return (0, "stat segment memfd_create failure");
268 if ((ftruncate (mfd, memory_size)) == -1)
269 return clib_error_return (0, "stat segment ftruncate failure");
272 mmap (NULL, memory_size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd,
274 return clib_error_return (0, "stat segment mmap failure");
277 #if USE_DLMALLOC == 0
278 heap = mheap_alloc_with_flags (((u8 *) memaddr) + getpagesize (),
279 memory_size - getpagesize (),
280 MHEAP_FLAG_DISABLE_VM |
281 MHEAP_FLAG_THREAD_SAFE);
284 create_mspace_with_base (((u8 *) memaddr) + getpagesize (),
285 memory_size - getpagesize (), 1 /* locked */ );
286 mspace_disable_expand (heap);
292 sm->directory_vector_by_name = hash_create_string (0, sizeof (uword));
293 sm->shared_header = shared_header = memaddr;
295 shared_header->version = STAT_SEGMENT_VERSION;
297 sm->stat_segment_lockp = clib_mem_alloc (sizeof (clib_spinlock_t));
298 clib_spinlock_init (sm->stat_segment_lockp);
300 oldheap = clib_mem_set_heap (sm->heap);
302 /* Set up the name to counter-vector hash table */
303 sm->directory_vector = 0;
305 shared_header->epoch = 1;
307 /* Scalar stats and node counters */
308 vec_validate (sm->directory_vector, STAT_COUNTERS - 1);
310 strcpy(sm->directory_vector[STAT_COUNTER_##E].name, #p "/" #n); \
311 sm->directory_vector[STAT_COUNTER_##E].type = STAT_DIR_TYPE_##t;
312 foreach_stat_segment_counter_name
314 /* Save the vector offset in the shared segment, for clients */
315 shared_header->directory_offset =
316 stat_segment_offset (shared_header, sm->directory_vector);
318 clib_mem_set_heap (oldheap);
320 /* Total shared memory size */
321 clib_mem_usage_t usage;
322 mheap_usage (sm->heap, &usage);
323 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_TOTAL].value =
330 name_sort_cmp (void *a1, void *a2)
332 stat_segment_directory_entry_t *n1 = a1;
333 stat_segment_directory_entry_t *n2 = a2;
335 return strcmp ((char *) n1->name, (char *) n2->name);
339 format_stat_dir_entry (u8 * s, va_list * args)
341 stat_segment_directory_entry_t *ep =
342 va_arg (*args, stat_segment_directory_entry_t *);
346 format_string = "%-74s %-10s %10lld";
350 case STAT_DIR_TYPE_SCALAR_INDEX:
351 type_name = "ScalarPtr";
354 case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE:
355 case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED:
356 type_name = "CMainPtr";
359 case STAT_DIR_TYPE_ERROR_INDEX:
360 type_name = "ErrIndex";
364 type_name = "illegal!";
368 return format (s, format_string, ep->name, type_name, ep->offset);
371 static clib_error_t *
372 show_stat_segment_command_fn (vlib_main_t * vm,
373 unformat_input_t * input,
374 vlib_cli_command_t * cmd)
376 stat_segment_main_t *sm = &stat_segment_main;
377 stat_segment_directory_entry_t *show_data;
382 if (unformat (input, "verbose"))
385 /* Lock even as reader, as this command doesn't handle epoch changes */
386 vlib_stat_segment_lock ();
387 show_data = vec_dup (sm->directory_vector);
388 vlib_stat_segment_unlock ();
390 vec_sort_with_function (show_data, name_sort_cmp);
392 vlib_cli_output (vm, "%-74s %10s %10s", "Name", "Type", "Value");
394 for (i = 0; i < vec_len (show_data); i++)
396 vlib_cli_output (vm, "%-100U", format_stat_dir_entry,
397 vec_elt_at_index (show_data, i));
403 vlib_cli_output (vm, "%U", format_mheap, sm->heap, 0 /* verbose */ );
410 VLIB_CLI_COMMAND (show_stat_segment_command, static) =
412 .path = "show statistics segment",
413 .short_help = "show statistics segment [verbose]",
414 .function = show_stat_segment_command_fn,
419 * Node performance counters:
420 * total_calls [threads][node-index]
427 update_node_counters (stat_segment_main_t * sm)
429 vlib_main_t **stat_vms = 0;
430 vlib_node_t ***node_dups = 0;
432 stat_segment_shared_header_t *shared_header = sm->shared_header;
433 static u32 no_max_nodes = 0;
435 vlib_node_get_nodes (0 /* vm, for barrier sync */ ,
436 (u32) ~ 0 /* all threads */ ,
437 1 /* include stats */ ,
438 0 /* barrier sync */ ,
439 &node_dups, &stat_vms);
441 u32 l = vec_len (node_dups[0]);
444 * Extend performance nodes if necessary
446 if (l > no_max_nodes)
448 void *oldheap = clib_mem_set_heap (sm->heap);
449 vlib_stat_segment_lock ();
451 stat_validate_counter_vector (&sm->directory_vector
452 [STAT_COUNTER_NODE_CLOCKS], l - 1);
453 stat_validate_counter_vector (&sm->directory_vector
454 [STAT_COUNTER_NODE_VECTORS], l - 1);
455 stat_validate_counter_vector (&sm->directory_vector
456 [STAT_COUNTER_NODE_CALLS], l - 1);
457 stat_validate_counter_vector (&sm->directory_vector
458 [STAT_COUNTER_NODE_SUSPENDS], l - 1);
460 vec_validate (sm->nodes, l - 1);
461 stat_segment_directory_entry_t *ep;
462 ep = &sm->directory_vector[STAT_COUNTER_NODE_NAMES];
463 ep->offset = stat_segment_offset (shared_header, sm->nodes);
467 ep->offset_vector ? stat_segment_pointer (shared_header,
468 ep->offset_vector) : 0;
469 /* Update names dictionary */
470 vec_validate (offset_vector, l - 1);
471 vlib_node_t **nodes = node_dups[0];
473 for (i = 0; i < vec_len (nodes); i++)
475 vlib_node_t *n = nodes[i];
477 s = format (s, "%v%c", n->name, 0);
478 if (sm->nodes[n->index])
479 vec_free (sm->nodes[n->index]);
480 sm->nodes[n->index] = s;
482 sm->nodes[i] ? stat_segment_offset (shared_header,
486 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
488 vlib_stat_segment_unlock ();
489 clib_mem_set_heap (oldheap);
493 for (j = 0; j < vec_len (node_dups); j++)
495 vlib_node_t **nodes = node_dups[j];
497 for (i = 0; i < vec_len (nodes); i++)
499 counter_t **counters;
501 vlib_node_t *n = nodes[i];
504 stat_segment_pointer (shared_header,
506 [STAT_COUNTER_NODE_CLOCKS].offset);
508 c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks;
511 stat_segment_pointer (shared_header,
513 [STAT_COUNTER_NODE_VECTORS].offset);
515 c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors;
518 stat_segment_pointer (shared_header,
520 [STAT_COUNTER_NODE_CALLS].offset);
522 c[n->index] = n->stats_total.calls - n->stats_last_clear.calls;
525 stat_segment_pointer (shared_header,
527 [STAT_COUNTER_NODE_SUSPENDS].offset);
530 n->stats_total.suspends - n->stats_last_clear.suspends;
536 do_stat_segment_updates (stat_segment_main_t * sm)
538 stat_segment_shared_header_t *shared_header = sm->shared_header;
539 vlib_main_t *vm = vlib_mains[0];
543 vlib_main_t *this_vlib_main;
545 counter_t **counters;
546 static int num_worker_threads_set;
549 * Set once at the beginning of time.
550 * Can't do this from the init routine, which happens before
551 * start_workers sets up vlib_mains...
553 if (PREDICT_FALSE (num_worker_threads_set == 0))
555 sm->directory_vector[STAT_COUNTER_NUM_WORKER_THREADS].value =
556 vec_len (vlib_mains) > 1 ? vec_len (vlib_mains) - 1 : 1;
558 stat_validate_counter_vector (&sm->directory_vector
559 [STAT_COUNTER_VECTOR_RATE_PER_WORKER],
560 vec_len (vlib_mains));
561 num_worker_threads_set = 1;
565 * Compute per-worker vector rates, and the average vector rate
571 stat_segment_pointer (shared_header,
573 [STAT_COUNTER_VECTOR_RATE_PER_WORKER].offset);
575 start = vec_len (vlib_mains) > 1 ? 1 : 0;
577 for (i = start; i < vec_len (vlib_mains); i++)
580 f64 this_vector_rate;
582 this_vlib_main = vlib_mains[i];
584 this_vector_rate = vlib_last_vector_length_per_node (this_vlib_main);
585 vector_rate += this_vector_rate;
587 /* Set the per-worker rate */
588 counters[i - start][0] = this_vector_rate;
591 /* And set the system average rate */
592 vector_rate /= (f64) (i - start);
594 sm->directory_vector[STAT_COUNTER_VECTOR_RATE].value = vector_rate;
597 * Compute the aggregate input rate
599 now = vlib_time_now (vm);
600 dt = now - sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value;
601 input_packets = vnet_get_aggregate_rx_packets ();
602 sm->directory_vector[STAT_COUNTER_INPUT_RATE].value =
603 (f64) (input_packets - sm->last_input_packets) / dt;
604 sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value = now;
605 sm->last_input_packets = input_packets;
606 sm->directory_vector[STAT_COUNTER_LAST_STATS_CLEAR].value =
607 vm->node_main.time_last_runtime_stats_clear;
609 /* Stats segment memory heap counter */
610 clib_mem_usage_t usage;
611 mheap_usage (sm->heap, &usage);
612 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_USED].value =
615 if (sm->node_counters_enabled)
616 update_node_counters (sm);
619 stat_segment_gauges_pool_t *g;
620 pool_foreach(g, sm->gauges,
622 g->fn(&sm->directory_vector[g->directory_index], g->caller_index);
626 /* Heartbeat, so clients detect we're still here */
627 sm->directory_vector[STAT_COUNTER_HEARTBEAT].value++;
631 * Accept connection on the socket and exchange the fd for the shared
634 static clib_error_t *
635 stats_socket_accept_ready (clib_file_t * uf)
637 stat_segment_main_t *sm = &stat_segment_main;
639 clib_socket_t client = { 0 };
641 err = clib_socket_accept (sm->socket, &client);
644 clib_error_report (err);
648 /* Send the fd across and close */
649 err = clib_socket_sendmsg (&client, 0, 0, &sm->memfd, 1);
651 clib_error_report (err);
652 clib_socket_close (&client);
658 stats_segment_socket_init (void)
660 stat_segment_main_t *sm = &stat_segment_main;
662 clib_socket_t *s = clib_mem_alloc (sizeof (clib_socket_t));
664 memset (s, 0, sizeof (clib_socket_t));
665 s->config = (char *) sm->socket_name;
666 s->flags = CLIB_SOCKET_F_IS_SERVER | CLIB_SOCKET_F_SEQPACKET |
667 CLIB_SOCKET_F_ALLOW_GROUP_WRITE | CLIB_SOCKET_F_PASSCRED;
669 if ((error = clib_socket_init (s)))
671 clib_error_report (error);
675 clib_file_t template = { 0 };
676 template.read_function = stats_socket_accept_ready;
677 template.file_descriptor = s->fd;
678 template.description = format (0, "stats segment listener %s", s->config);
679 clib_file_add (&file_main, &template);
684 static clib_error_t *
685 stats_segment_socket_exit (vlib_main_t * vm)
688 * cleanup the listener socket on exit.
690 stat_segment_main_t *sm = &stat_segment_main;
691 unlink ((char *) sm->socket_name);
695 VLIB_MAIN_LOOP_EXIT_FUNCTION (stats_segment_socket_exit);
698 stat_segment_collector_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
701 stat_segment_main_t *sm = &stat_segment_main;
703 /* Wait for Godot... */
704 f64 sleep_duration = 10;
708 do_stat_segment_updates (sm);
709 vlib_process_suspend (vm, sleep_duration);
711 return 0; /* or not */
714 static clib_error_t *
715 statseg_init (vlib_main_t * vm)
717 stat_segment_main_t *sm = &stat_segment_main;
720 stats_segment_socket_init ();
726 VLIB_INIT_FUNCTION (statseg_init) =
728 .runs_after = VLIB_INITS("unix_input_init"),
734 stat_segment_register_gauge (u8 * name, stat_segment_update_fn update_fn,
737 stat_segment_main_t *sm = &stat_segment_main;
738 stat_segment_shared_header_t *shared_header = sm->shared_header;
740 stat_segment_directory_entry_t e;
741 stat_segment_gauges_pool_t *gauge;
743 ASSERT (shared_header);
745 u32 next_vector_index = vec_len (sm->directory_vector);
746 u32 vector_index = lookup_or_create_hash_index (name,
749 if (vector_index < next_vector_index) /* Already registered */
750 return clib_error_return (0, "%v is alreadty registered", name);
752 oldheap = vlib_stats_push_heap (NULL);
753 vlib_stat_segment_lock ();
755 memset (&e, 0, sizeof (e));
756 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
758 memcpy (e.name, name, vec_len (name));
759 vec_add1 (sm->directory_vector, e);
761 shared_header->directory_offset =
762 stat_segment_offset (shared_header, sm->directory_vector);
764 vlib_stat_segment_unlock ();
765 clib_mem_set_heap (oldheap);
767 /* Back on our own heap */
768 pool_get (sm->gauges, gauge);
769 gauge->fn = update_fn;
770 gauge->caller_index = caller_index;
771 gauge->directory_index = next_vector_index;
776 static clib_error_t *
777 statseg_config (vlib_main_t * vm, unformat_input_t * input)
779 stat_segment_main_t *sm = &stat_segment_main;
781 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
783 if (unformat (input, "socket-name %s", &sm->socket_name))
785 else if (unformat (input, "default"))
787 vec_reset_length (sm->socket_name);
788 sm->socket_name = format (sm->socket_name, "%s",
789 STAT_SEGMENT_SOCKET_FILE);
791 else if (unformat (input, "size %U",
792 unformat_memory_size, &sm->memory_size))
794 else if (unformat (input, "per-node-counters on"))
795 sm->node_counters_enabled = 1;
796 else if (unformat (input, "per-node-counters off"))
797 sm->node_counters_enabled = 0;
799 return clib_error_return (0, "unknown input `%U'",
800 format_unformat_error, input);
803 /* set default socket file name when statseg config stanza is empty. */
804 if (!vec_len (sm->socket_name))
805 sm->socket_name = format (sm->socket_name, "%s",
806 STAT_SEGMENT_SOCKET_FILE);
808 * NULL-terminate socket name string
809 * clib_socket_init()->socket_config() use C str*
811 vec_terminate_c_string (sm->socket_name);
816 static clib_error_t *
817 statseg_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
819 stat_segment_main_t *sm = &stat_segment_main;
820 stat_segment_shared_header_t *shared_header = sm->shared_header;
822 void *oldheap = vlib_stats_push_heap (sm->interfaces);
823 vlib_stat_segment_lock ();
825 vec_validate (sm->interfaces, sw_if_index);
828 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
829 vnet_sw_interface_t *si_sup =
830 vnet_get_sup_sw_interface (vnm, si->sw_if_index);
831 vnet_hw_interface_t *hi_sup;
833 ASSERT (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
834 hi_sup = vnet_get_hw_interface (vnm, si_sup->hw_if_index);
837 s = format (s, "%v", hi_sup->name);
838 if (si->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
839 s = format (s, ".%d", si->sub.id);
840 s = format (s, "%c", 0);
841 sm->interfaces[sw_if_index] = s;
845 vec_free (sm->interfaces[sw_if_index]);
846 sm->interfaces[sw_if_index] = 0;
849 stat_segment_directory_entry_t *ep;
850 ep = &sm->directory_vector[STAT_COUNTER_INTERFACE_NAMES];
851 ep->offset = stat_segment_offset (shared_header, sm->interfaces);
855 ep->offset_vector ? stat_segment_pointer (shared_header,
856 ep->offset_vector) : 0;
858 vec_validate (offset_vector, vec_len (sm->interfaces) - 1);
860 if (sm->last != sm->interfaces)
862 /* the interface vector moved, so need to recalulate the offset array */
863 for (i = 0; i < vec_len (sm->interfaces); i++)
866 sm->interfaces[i] ? stat_segment_offset (shared_header,
867 sm->interfaces[i]) : 0;
872 offset_vector[sw_if_index] =
873 sm->interfaces[sw_if_index] ?
874 stat_segment_offset (shared_header, sm->interfaces[sw_if_index]) : 0;
876 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
878 vlib_stat_segment_unlock ();
879 clib_mem_set_heap (oldheap);
884 VLIB_EARLY_CONFIG_FUNCTION (statseg_config, "statseg");
885 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (statseg_sw_interface_add_del);
888 VLIB_REGISTER_NODE (stat_segment_collector, static) =
890 .function = stat_segment_collector_process,
891 .name = "statseg-collector-process",
892 .type = VLIB_NODE_TYPE_PROCESS,
898 * fd.io coding-style-patch-verification: ON
901 * eval: (c-set-style "gnu")