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 /* we allocate our private copy of 'name' */
76 hash_set (sm->directory_vector_by_name, format (0, "%s%c", name, 0),
78 index = next_vector_index;
89 vlib_stats_pop_heap (void *cm_arg, void *oldheap, u32 cindex,
90 stat_directory_type_t type)
92 vlib_simple_counter_main_t *cm = (vlib_simple_counter_main_t *) cm_arg;
93 stat_segment_main_t *sm = &stat_segment_main;
94 stat_segment_shared_header_t *shared_header = sm->shared_header;
95 char *stat_segment_name;
96 stat_segment_directory_entry_t e = { 0 };
98 /* Not all counters have names / hash-table entries */
99 if (!cm->name && !cm->stat_segment_name)
101 clib_mem_set_heap (oldheap);
105 ASSERT (shared_header);
107 vlib_stat_segment_lock ();
109 /* Lookup hash-table is on the main heap */
111 cm->stat_segment_name ? cm->stat_segment_name : cm->name;
112 u32 next_vector_index = vec_len (sm->directory_vector);
113 clib_mem_set_heap (oldheap); /* Exit stats segment */
114 u32 vector_index = lookup_or_create_hash_index ((u8 *) stat_segment_name,
116 /* Back to stats segment */
117 clib_mem_set_heap (sm->heap); /* Re-enter stat segment */
120 /* Update the vector */
121 if (vector_index == next_vector_index)
123 strncpy (e.name, stat_segment_name, 128 - 1);
125 vec_add1 (sm->directory_vector, e);
128 stat_segment_directory_entry_t *ep = &sm->directory_vector[vector_index];
129 ep->offset = stat_segment_offset (shared_header, cm->counters); /* Vector of threads of vectors of counters */
131 ep->offset_vector ? stat_segment_pointer (shared_header,
132 ep->offset_vector) : 0;
134 /* Update the 2nd dimension offset vector */
136 vec_validate (offset_vector, vec_len (cm->counters) - 1);
138 if (sm->last != offset_vector)
140 for (i = 0; i < vec_len (cm->counters); i++)
142 stat_segment_offset (shared_header, cm->counters[i]);
145 offset_vector[cindex] =
146 stat_segment_offset (shared_header, cm->counters[cindex]);
148 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
149 sm->directory_vector[vector_index].offset =
150 stat_segment_offset (shared_header, cm->counters);
152 /* Reset the client hash table pointer, since it WILL change! */
153 shared_header->directory_offset =
154 stat_segment_offset (shared_header, sm->directory_vector);
156 vlib_stat_segment_unlock ();
157 clib_mem_set_heap (oldheap);
161 vlib_stats_register_error_index (void *oldheap, u8 * name, u64 * em_vec,
164 stat_segment_main_t *sm = &stat_segment_main;
165 stat_segment_shared_header_t *shared_header = sm->shared_header;
166 stat_segment_directory_entry_t e;
168 ASSERT (shared_header);
170 vlib_stat_segment_lock ();
171 u32 next_vector_index = vec_len (sm->directory_vector);
172 clib_mem_set_heap (oldheap); /* Exit stats segment */
174 u32 vector_index = lookup_or_create_hash_index (name,
177 /* Back to stats segment */
178 clib_mem_set_heap (sm->heap); /* Re-enter stat segment */
180 if (next_vector_index == vector_index)
182 memcpy (e.name, name, vec_len (name));
183 e.name[vec_len (name)] = '\0';
184 e.type = STAT_DIR_TYPE_ERROR_INDEX;
187 vec_add1 (sm->directory_vector, e);
189 /* Warn clients to refresh any pointers they might be holding */
190 shared_header->directory_offset =
191 stat_segment_offset (shared_header, sm->directory_vector);
194 vlib_stat_segment_unlock ();
198 stat_validate_counter_vector (stat_segment_directory_entry_t * ep, u32 max)
200 stat_segment_main_t *sm = &stat_segment_main;
201 stat_segment_shared_header_t *shared_header = sm->shared_header;
202 counter_t **counters = 0;
203 vlib_thread_main_t *tm = vlib_get_thread_main ();
205 u64 *offset_vector = 0;
207 vec_validate_aligned (counters, tm->n_vlib_mains - 1,
208 CLIB_CACHE_LINE_BYTES);
209 for (i = 0; i < tm->n_vlib_mains; i++)
211 vec_validate_aligned (counters[i], max, CLIB_CACHE_LINE_BYTES);
212 vec_add1 (offset_vector,
213 stat_segment_offset (shared_header, counters[i]));
215 ep->offset = stat_segment_offset (shared_header, counters);
216 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
220 vlib_stats_pop_heap2 (u64 * error_vector, u32 thread_index, void *oldheap,
223 stat_segment_main_t *sm = &stat_segment_main;
224 stat_segment_shared_header_t *shared_header = sm->shared_header;
226 ASSERT (shared_header);
229 vlib_stat_segment_lock ();
231 /* Reset the client hash table pointer, since it WILL change! */
232 vec_validate (sm->error_vector, thread_index);
233 sm->error_vector[thread_index] =
234 stat_segment_offset (shared_header, error_vector);
236 shared_header->error_offset =
237 stat_segment_offset (shared_header, sm->error_vector);
238 shared_header->directory_offset =
239 stat_segment_offset (shared_header, sm->directory_vector);
242 vlib_stat_segment_unlock ();
243 clib_mem_set_heap (oldheap);
247 vlib_map_stat_segment_init (void)
249 stat_segment_main_t *sm = &stat_segment_main;
250 stat_segment_shared_header_t *shared_header;
254 char *mem_name = "stat_segment_test";
257 memory_size = sm->memory_size;
258 if (memory_size == 0)
259 memory_size = STAT_SEGMENT_DEFAULT_SIZE;
261 /* Create shared memory segment */
262 if ((mfd = memfd_create (mem_name, 0)) < 0)
263 return clib_error_return (0, "stat segment memfd_create failure");
266 if ((ftruncate (mfd, memory_size)) == -1)
267 return clib_error_return (0, "stat segment ftruncate failure");
270 mmap (NULL, memory_size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd,
272 return clib_error_return (0, "stat segment mmap failure");
275 #if USE_DLMALLOC == 0
276 heap = mheap_alloc_with_flags (((u8 *) memaddr) + getpagesize (),
277 memory_size - getpagesize (),
278 MHEAP_FLAG_DISABLE_VM |
279 MHEAP_FLAG_THREAD_SAFE);
282 create_mspace_with_base (((u8 *) memaddr) + getpagesize (),
283 memory_size - getpagesize (), 1 /* locked */ );
284 mspace_disable_expand (heap);
290 sm->directory_vector_by_name = hash_create_string (0, sizeof (uword));
291 sm->shared_header = shared_header = memaddr;
293 shared_header->version = STAT_SEGMENT_VERSION;
295 sm->stat_segment_lockp = clib_mem_alloc (sizeof (clib_spinlock_t));
296 clib_spinlock_init (sm->stat_segment_lockp);
298 oldheap = clib_mem_set_heap (sm->heap);
300 /* Set up the name to counter-vector hash table */
301 sm->directory_vector = 0;
303 shared_header->epoch = 1;
305 /* Scalar stats and node counters */
306 vec_validate (sm->directory_vector, STAT_COUNTERS - 1);
308 strcpy(sm->directory_vector[STAT_COUNTER_##E].name, #p "/" #n); \
309 sm->directory_vector[STAT_COUNTER_##E].type = STAT_DIR_TYPE_##t;
310 foreach_stat_segment_counter_name
312 /* Save the vector offset in the shared segment, for clients */
313 shared_header->directory_offset =
314 stat_segment_offset (shared_header, sm->directory_vector);
316 clib_mem_set_heap (oldheap);
318 /* Total shared memory size */
319 clib_mem_usage_t usage;
320 mheap_usage (sm->heap, &usage);
321 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_TOTAL].value =
328 name_sort_cmp (void *a1, void *a2)
330 stat_segment_directory_entry_t *n1 = a1;
331 stat_segment_directory_entry_t *n2 = a2;
333 return strcmp ((char *) n1->name, (char *) n2->name);
337 format_stat_dir_entry (u8 * s, va_list * args)
339 stat_segment_directory_entry_t *ep =
340 va_arg (*args, stat_segment_directory_entry_t *);
344 format_string = "%-74s %-10s %10lld";
348 case STAT_DIR_TYPE_SCALAR_INDEX:
349 type_name = "ScalarPtr";
352 case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE:
353 case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED:
354 type_name = "CMainPtr";
357 case STAT_DIR_TYPE_ERROR_INDEX:
358 type_name = "ErrIndex";
361 case STAT_DIR_TYPE_NAME_VECTOR:
362 type_name = "NameVector";
366 type_name = "illegal!";
370 return format (s, format_string, ep->name, type_name, ep->offset);
373 static clib_error_t *
374 show_stat_segment_command_fn (vlib_main_t * vm,
375 unformat_input_t * input,
376 vlib_cli_command_t * cmd)
378 stat_segment_main_t *sm = &stat_segment_main;
379 stat_segment_directory_entry_t *show_data;
384 if (unformat (input, "verbose"))
387 /* Lock even as reader, as this command doesn't handle epoch changes */
388 vlib_stat_segment_lock ();
389 show_data = vec_dup (sm->directory_vector);
390 vlib_stat_segment_unlock ();
392 vec_sort_with_function (show_data, name_sort_cmp);
394 vlib_cli_output (vm, "%-74s %10s %10s", "Name", "Type", "Value");
396 for (i = 0; i < vec_len (show_data); i++)
398 vlib_cli_output (vm, "%-100U", format_stat_dir_entry,
399 vec_elt_at_index (show_data, i));
405 vlib_cli_output (vm, "%U", format_mheap, sm->heap, 0 /* verbose */ );
412 VLIB_CLI_COMMAND (show_stat_segment_command, static) =
414 .path = "show statistics segment",
415 .short_help = "show statistics segment [verbose]",
416 .function = show_stat_segment_command_fn,
421 * Node performance counters:
422 * total_calls [threads][node-index]
429 update_node_counters (stat_segment_main_t * sm)
431 vlib_main_t **stat_vms = 0;
432 vlib_node_t ***node_dups = 0;
434 stat_segment_shared_header_t *shared_header = sm->shared_header;
435 static u32 no_max_nodes = 0;
437 vlib_node_get_nodes (0 /* vm, for barrier sync */ ,
438 (u32) ~ 0 /* all threads */ ,
439 1 /* include stats */ ,
440 0 /* barrier sync */ ,
441 &node_dups, &stat_vms);
443 u32 l = vec_len (node_dups[0]);
446 * Extend performance nodes if necessary
448 if (l > no_max_nodes)
450 void *oldheap = clib_mem_set_heap (sm->heap);
451 vlib_stat_segment_lock ();
453 stat_validate_counter_vector (&sm->directory_vector
454 [STAT_COUNTER_NODE_CLOCKS], l - 1);
455 stat_validate_counter_vector (&sm->directory_vector
456 [STAT_COUNTER_NODE_VECTORS], l - 1);
457 stat_validate_counter_vector (&sm->directory_vector
458 [STAT_COUNTER_NODE_CALLS], l - 1);
459 stat_validate_counter_vector (&sm->directory_vector
460 [STAT_COUNTER_NODE_SUSPENDS], l - 1);
462 vec_validate (sm->nodes, l - 1);
463 stat_segment_directory_entry_t *ep;
464 ep = &sm->directory_vector[STAT_COUNTER_NODE_NAMES];
465 ep->offset = stat_segment_offset (shared_header, sm->nodes);
469 ep->offset_vector ? stat_segment_pointer (shared_header,
470 ep->offset_vector) : 0;
471 /* Update names dictionary */
472 vec_validate (offset_vector, l - 1);
473 vlib_node_t **nodes = node_dups[0];
475 for (i = 0; i < vec_len (nodes); i++)
477 vlib_node_t *n = nodes[i];
479 s = format (s, "%v%c", n->name, 0);
480 if (sm->nodes[n->index])
481 vec_free (sm->nodes[n->index]);
482 sm->nodes[n->index] = s;
484 sm->nodes[i] ? stat_segment_offset (shared_header,
488 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
490 vlib_stat_segment_unlock ();
491 clib_mem_set_heap (oldheap);
495 for (j = 0; j < vec_len (node_dups); j++)
497 vlib_node_t **nodes = node_dups[j];
499 for (i = 0; i < vec_len (nodes); i++)
501 counter_t **counters;
503 vlib_node_t *n = nodes[i];
506 stat_segment_pointer (shared_header,
508 [STAT_COUNTER_NODE_CLOCKS].offset);
510 c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks;
513 stat_segment_pointer (shared_header,
515 [STAT_COUNTER_NODE_VECTORS].offset);
517 c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors;
520 stat_segment_pointer (shared_header,
522 [STAT_COUNTER_NODE_CALLS].offset);
524 c[n->index] = n->stats_total.calls - n->stats_last_clear.calls;
527 stat_segment_pointer (shared_header,
529 [STAT_COUNTER_NODE_SUSPENDS].offset);
532 n->stats_total.suspends - n->stats_last_clear.suspends;
534 vec_free (node_dups[j]);
536 vec_free (node_dups);
541 do_stat_segment_updates (stat_segment_main_t * sm)
543 stat_segment_shared_header_t *shared_header = sm->shared_header;
544 vlib_main_t *vm = vlib_mains[0];
548 vlib_main_t *this_vlib_main;
550 counter_t **counters;
551 static int num_worker_threads_set;
554 * Set once at the beginning of time.
555 * Can't do this from the init routine, which happens before
556 * start_workers sets up vlib_mains...
558 if (PREDICT_FALSE (num_worker_threads_set == 0))
560 void *oldheap = clib_mem_set_heap (sm->heap);
561 vlib_stat_segment_lock ();
563 sm->directory_vector[STAT_COUNTER_NUM_WORKER_THREADS].value =
564 vec_len (vlib_mains) > 1 ? vec_len (vlib_mains) - 1 : 1;
566 stat_validate_counter_vector (&sm->directory_vector
567 [STAT_COUNTER_VECTOR_RATE_PER_WORKER], 0);
568 num_worker_threads_set = 1;
569 vlib_stat_segment_unlock ();
570 clib_mem_set_heap (oldheap);
574 * Compute per-worker vector rates, and the average vector rate
580 stat_segment_pointer (shared_header,
582 [STAT_COUNTER_VECTOR_RATE_PER_WORKER].offset);
584 start = vec_len (vlib_mains) > 1 ? 1 : 0;
586 for (i = start; i < vec_len (vlib_mains); i++)
589 f64 this_vector_rate;
591 this_vlib_main = vlib_mains[i];
593 this_vector_rate = vlib_last_vector_length_per_node (this_vlib_main);
594 vector_rate += this_vector_rate;
596 /* Set the per-worker rate */
597 counters[0][i - start] = this_vector_rate;
600 /* And set the system average rate */
601 vector_rate /= (f64) (i - start);
603 sm->directory_vector[STAT_COUNTER_VECTOR_RATE].value = vector_rate;
606 * Compute the aggregate input rate
608 now = vlib_time_now (vm);
609 dt = now - sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value;
610 input_packets = vnet_get_aggregate_rx_packets ();
611 sm->directory_vector[STAT_COUNTER_INPUT_RATE].value =
612 (f64) (input_packets - sm->last_input_packets) / dt;
613 sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value = now;
614 sm->last_input_packets = input_packets;
615 sm->directory_vector[STAT_COUNTER_LAST_STATS_CLEAR].value =
616 vm->node_main.time_last_runtime_stats_clear;
618 /* Stats segment memory heap counter */
619 clib_mem_usage_t usage;
620 mheap_usage (sm->heap, &usage);
621 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_USED].value =
624 if (sm->node_counters_enabled)
625 update_node_counters (sm);
628 stat_segment_gauges_pool_t *g;
629 pool_foreach(g, sm->gauges,
631 g->fn(&sm->directory_vector[g->directory_index], g->caller_index);
635 /* Heartbeat, so clients detect we're still here */
636 sm->directory_vector[STAT_COUNTER_HEARTBEAT].value++;
640 * Accept connection on the socket and exchange the fd for the shared
643 static clib_error_t *
644 stats_socket_accept_ready (clib_file_t * uf)
646 stat_segment_main_t *sm = &stat_segment_main;
648 clib_socket_t client = { 0 };
650 err = clib_socket_accept (sm->socket, &client);
653 clib_error_report (err);
657 /* Send the fd across and close */
658 err = clib_socket_sendmsg (&client, 0, 0, &sm->memfd, 1);
660 clib_error_report (err);
661 clib_socket_close (&client);
666 static clib_error_t *
667 stats_segment_socket_init (void)
669 stat_segment_main_t *sm = &stat_segment_main;
671 clib_socket_t *s = clib_mem_alloc (sizeof (clib_socket_t));
673 memset (s, 0, sizeof (clib_socket_t));
674 s->config = (char *) sm->socket_name;
675 s->flags = CLIB_SOCKET_F_IS_SERVER | CLIB_SOCKET_F_SEQPACKET |
676 CLIB_SOCKET_F_ALLOW_GROUP_WRITE | CLIB_SOCKET_F_PASSCRED;
678 if ((error = clib_socket_init (s)))
681 clib_file_t template = { 0 };
682 template.read_function = stats_socket_accept_ready;
683 template.file_descriptor = s->fd;
684 template.description = format (0, "stats segment listener %s", s->config);
685 clib_file_add (&file_main, &template);
692 static clib_error_t *
693 stats_segment_socket_exit (vlib_main_t * vm)
696 * cleanup the listener socket on exit.
698 stat_segment_main_t *sm = &stat_segment_main;
699 unlink ((char *) sm->socket_name);
703 VLIB_MAIN_LOOP_EXIT_FUNCTION (stats_segment_socket_exit);
706 stat_segment_collector_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
709 stat_segment_main_t *sm = &stat_segment_main;
711 /* Wait for Godot... */
712 f64 sleep_duration = 10;
716 do_stat_segment_updates (sm);
717 vlib_process_suspend (vm, sleep_duration);
719 return 0; /* or not */
722 static clib_error_t *
723 statseg_init (vlib_main_t * vm)
725 stat_segment_main_t *sm = &stat_segment_main;
727 /* set default socket file name when statseg config stanza is empty. */
728 if (!vec_len (sm->socket_name))
729 sm->socket_name = format (0, "%s/%s%c", vlib_unix_get_runtime_dir (),
730 STAT_SEGMENT_SOCKET_FILENAME, 0);
731 return stats_segment_socket_init ();
735 VLIB_INIT_FUNCTION (statseg_init) =
737 .runs_after = VLIB_INITS("unix_input_init"),
742 stat_segment_register_gauge (u8 * name, stat_segment_update_fn update_fn,
745 stat_segment_main_t *sm = &stat_segment_main;
746 stat_segment_shared_header_t *shared_header = sm->shared_header;
748 stat_segment_directory_entry_t e;
749 stat_segment_gauges_pool_t *gauge;
751 ASSERT (shared_header);
753 u32 next_vector_index = vec_len (sm->directory_vector);
754 u32 vector_index = lookup_or_create_hash_index (name,
757 if (vector_index < next_vector_index) /* Already registered */
758 return clib_error_return (0, "%v is alreadty registered", name);
760 oldheap = vlib_stats_push_heap (NULL);
761 vlib_stat_segment_lock ();
763 memset (&e, 0, sizeof (e));
764 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
766 memcpy (e.name, name, vec_len (name));
767 vec_add1 (sm->directory_vector, e);
769 shared_header->directory_offset =
770 stat_segment_offset (shared_header, sm->directory_vector);
772 vlib_stat_segment_unlock ();
773 clib_mem_set_heap (oldheap);
775 /* Back on our own heap */
776 pool_get (sm->gauges, gauge);
777 gauge->fn = update_fn;
778 gauge->caller_index = caller_index;
779 gauge->directory_index = next_vector_index;
785 stat_segment_register_state_counter (u8 * name, u32 * index)
787 stat_segment_main_t *sm = &stat_segment_main;
788 stat_segment_shared_header_t *shared_header = sm->shared_header;
790 stat_segment_directory_entry_t e;
792 ASSERT (shared_header);
793 ASSERT (vlib_get_thread_index () == 0);
795 u32 next_vector_index = vec_len (sm->directory_vector);
796 u32 vector_index = lookup_or_create_hash_index (name,
799 if (vector_index < next_vector_index) /* Already registered */
800 return clib_error_return (0, "%v is already registered", name);
802 oldheap = vlib_stats_push_heap (NULL);
803 vlib_stat_segment_lock ();
805 memset (&e, 0, sizeof (e));
806 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
808 memcpy (e.name, name, vec_len (name));
809 vec_add1 (sm->directory_vector, e);
811 shared_header->directory_offset =
812 stat_segment_offset (shared_header, sm->directory_vector);
814 vlib_stat_segment_unlock ();
815 clib_mem_set_heap (oldheap);
817 *index = next_vector_index;
822 stat_segment_deregister_state_counter (u32 index)
824 stat_segment_main_t *sm = &stat_segment_main;
825 stat_segment_shared_header_t *shared_header = sm->shared_header;
826 stat_segment_directory_entry_t *e;
828 ASSERT (shared_header);
830 if (index > vec_len (sm->directory_vector))
831 return clib_error_return (0, "%u index does not exist", index);
833 e = &sm->directory_vector[index];
834 if (e->type != STAT_DIR_TYPE_SCALAR_INDEX)
835 return clib_error_return (0, "%u index cannot be deleted", index);
837 hash_unset (sm->directory_vector_by_name, &e->name);
838 vec_del1 (sm->directory_vector, index);
843 stat_segment_set_state_counter (u32 index, u64 value)
845 stat_segment_main_t *sm = &stat_segment_main;
847 ASSERT (index < vec_len (sm->directory_vector));
848 sm->directory_vector[index].index = value;
851 static clib_error_t *
852 statseg_config (vlib_main_t * vm, unformat_input_t * input)
854 stat_segment_main_t *sm = &stat_segment_main;
856 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
858 if (unformat (input, "socket-name %s", &sm->socket_name))
860 /* DEPRECATE: default (does nothing) */
861 else if (unformat (input, "default"))
863 else if (unformat (input, "size %U",
864 unformat_memory_size, &sm->memory_size))
866 else if (unformat (input, "per-node-counters on"))
867 sm->node_counters_enabled = 1;
868 else if (unformat (input, "per-node-counters off"))
869 sm->node_counters_enabled = 0;
871 return clib_error_return (0, "unknown input `%U'",
872 format_unformat_error, input);
876 * NULL-terminate socket name string
877 * clib_socket_init()->socket_config() use C str*
879 if (vec_len (sm->socket_name))
880 vec_terminate_c_string (sm->socket_name);
885 static clib_error_t *
886 statseg_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
888 stat_segment_main_t *sm = &stat_segment_main;
889 stat_segment_shared_header_t *shared_header = sm->shared_header;
891 void *oldheap = vlib_stats_push_heap (sm->interfaces);
892 vlib_stat_segment_lock ();
894 vec_validate (sm->interfaces, sw_if_index);
897 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
898 vnet_sw_interface_t *si_sup =
899 vnet_get_sup_sw_interface (vnm, si->sw_if_index);
900 vnet_hw_interface_t *hi_sup;
902 ASSERT (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
903 hi_sup = vnet_get_hw_interface (vnm, si_sup->hw_if_index);
906 s = format (s, "%v", hi_sup->name);
907 if (si->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
908 s = format (s, ".%d", si->sub.id);
909 s = format (s, "%c", 0);
910 sm->interfaces[sw_if_index] = s;
914 vec_free (sm->interfaces[sw_if_index]);
915 sm->interfaces[sw_if_index] = 0;
918 stat_segment_directory_entry_t *ep;
919 ep = &sm->directory_vector[STAT_COUNTER_INTERFACE_NAMES];
920 ep->offset = stat_segment_offset (shared_header, sm->interfaces);
924 ep->offset_vector ? stat_segment_pointer (shared_header,
925 ep->offset_vector) : 0;
927 vec_validate (offset_vector, vec_len (sm->interfaces) - 1);
929 if (sm->last != sm->interfaces)
931 /* the interface vector moved, so need to recalulate the offset array */
932 for (i = 0; i < vec_len (sm->interfaces); i++)
935 sm->interfaces[i] ? stat_segment_offset (shared_header,
936 sm->interfaces[i]) : 0;
941 offset_vector[sw_if_index] =
942 sm->interfaces[sw_if_index] ?
943 stat_segment_offset (shared_header, sm->interfaces[sw_if_index]) : 0;
945 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
947 vlib_stat_segment_unlock ();
948 clib_mem_set_heap (oldheap);
953 VLIB_EARLY_CONFIG_FUNCTION (statseg_config, "statseg");
954 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (statseg_sw_interface_add_del);
957 VLIB_REGISTER_NODE (stat_segment_collector, static) =
959 .function = stat_segment_collector_process,
960 .name = "statseg-collector-process",
961 .type = VLIB_NODE_TYPE_PROCESS,
967 * fd.io coding-style-patch-verification: ON
970 * eval: (c-set-style "gnu")