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_hash_index (u8 * name)
65 stat_segment_main_t *sm = &stat_segment_main;
66 u32 index = STAT_SEGMENT_INDEX_INVALID;
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);
82 create_hash_index (u8 * name, u32 index)
84 stat_segment_main_t *sm = &stat_segment_main;
86 /* Must be called in the context of the main heap */
87 ASSERT (clib_mem_get_heap () != sm->heap);
89 hash_set (sm->directory_vector_by_name, format (0, "%s%c", name, 0), index);
93 vlib_stats_get_next_vector_index ()
95 stat_segment_main_t *sm = &stat_segment_main;
96 u32 next_vector_index = vec_len (sm->directory_vector);
99 vec_foreach_index_backwards (i, sm->directory_vector)
101 if (sm->directory_vector[i].type == STAT_DIR_TYPE_EMPTY)
103 next_vector_index = i;
108 return next_vector_index;
112 vlib_stats_create_counter (stat_segment_directory_entry_t * e, void *oldheap)
114 stat_segment_main_t *sm = &stat_segment_main;
116 ASSERT (clib_mem_get_heap () == sm->heap);
118 u32 index = vlib_stats_get_next_vector_index ();
120 clib_mem_set_heap (oldheap);
121 create_hash_index ((u8 *) e->name, index);
122 clib_mem_set_heap (sm->heap);
124 vec_validate (sm->directory_vector, index);
125 sm->directory_vector[index] = *e;
131 vlib_stats_delete_counter (u32 index, void *oldheap)
133 stat_segment_main_t *sm = &stat_segment_main;
134 stat_segment_directory_entry_t *e;
136 ASSERT (clib_mem_get_heap () == sm->heap);
138 if (index > vec_len (sm->directory_vector))
141 e = &sm->directory_vector[index];
143 clib_mem_set_heap (oldheap);
144 hash_unset (sm->directory_vector_by_name, &e->name);
145 clib_mem_set_heap (sm->heap);
147 memset (e, 0, sizeof (*e));
148 e->type = STAT_DIR_TYPE_EMPTY;
152 * Called from main heap
155 vlib_stats_delete_cm (void *cm_arg)
157 vlib_simple_counter_main_t *cm = (vlib_simple_counter_main_t *) cm_arg;
158 stat_segment_main_t *sm = &stat_segment_main;
159 stat_segment_directory_entry_t *e;
161 /* Not all counters have names / hash-table entries */
162 if (!cm->name && !cm->stat_segment_name)
166 vlib_stat_segment_lock ();
168 /* Lookup hash-table is on the main heap */
169 char *stat_segment_name =
170 cm->stat_segment_name ? cm->stat_segment_name : cm->name;
171 u32 index = lookup_hash_index ((u8 *) stat_segment_name);
173 e = &sm->directory_vector[index];
174 hash_unset (sm->directory_vector_by_name, &e->name);
176 void *oldheap = clib_mem_set_heap (sm->heap); /* Enter stats segment */
177 clib_mem_set_heap (oldheap); /* Exit stats segment */
179 memset (e, 0, sizeof (*e));
180 e->type = STAT_DIR_TYPE_EMPTY;
182 vlib_stat_segment_unlock ();
186 vlib_stats_pop_heap (void *cm_arg, void *oldheap, u32 cindex,
187 stat_directory_type_t type)
189 vlib_simple_counter_main_t *cm = (vlib_simple_counter_main_t *) cm_arg;
190 stat_segment_main_t *sm = &stat_segment_main;
191 stat_segment_shared_header_t *shared_header = sm->shared_header;
192 char *stat_segment_name;
193 stat_segment_directory_entry_t e = { 0 };
195 /* Not all counters have names / hash-table entries */
196 if (!cm->name && !cm->stat_segment_name)
198 clib_mem_set_heap (oldheap);
202 ASSERT (shared_header);
204 vlib_stat_segment_lock ();
206 /* Lookup hash-table is on the main heap */
208 cm->stat_segment_name ? cm->stat_segment_name : cm->name;
210 clib_mem_set_heap (oldheap); /* Exit stats segment */
211 u32 vector_index = lookup_hash_index ((u8 *) stat_segment_name);
212 /* Back to stats segment */
213 clib_mem_set_heap (sm->heap); /* Re-enter stat segment */
216 /* Update the vector */
217 if (vector_index == STAT_SEGMENT_INDEX_INVALID)
219 strncpy (e.name, stat_segment_name, 128 - 1);
221 vector_index = vlib_stats_create_counter (&e, oldheap);
224 stat_segment_directory_entry_t *ep = &sm->directory_vector[vector_index];
225 ep->data = cm->counters;
227 /* Reset the client hash table pointer, since it WILL change! */
228 shared_header->directory_vector = sm->directory_vector;
230 vlib_stat_segment_unlock ();
231 clib_mem_set_heap (oldheap);
235 vlib_stats_register_error_index (void *oldheap, u8 * name, u64 * em_vec,
238 stat_segment_main_t *sm = &stat_segment_main;
239 stat_segment_shared_header_t *shared_header = sm->shared_header;
240 stat_segment_directory_entry_t e;
242 ASSERT (shared_header);
244 vlib_stat_segment_lock ();
245 clib_mem_set_heap (oldheap); /* Exit stats segment */
246 u32 vector_index = lookup_hash_index (name);
247 /* Back to stats segment */
248 clib_mem_set_heap (sm->heap); /* Re-enter stat segment */
250 if (vector_index == STAT_SEGMENT_INDEX_INVALID)
252 memcpy (e.name, name, vec_len (name));
253 e.name[vec_len (name)] = '\0';
254 e.type = STAT_DIR_TYPE_ERROR_INDEX;
256 vector_index = vlib_stats_create_counter (&e, oldheap);
258 /* Warn clients to refresh any pointers they might be holding */
259 shared_header->directory_vector = sm->directory_vector;
262 vlib_stat_segment_unlock ();
266 stat_validate_counter_vector (stat_segment_directory_entry_t * ep, u32 max)
268 counter_t **counters = ep->data;
269 vlib_thread_main_t *tm = vlib_get_thread_main ();
272 vec_validate_aligned (counters, tm->n_vlib_mains - 1,
273 CLIB_CACHE_LINE_BYTES);
274 for (i = 0; i < tm->n_vlib_mains; i++)
275 vec_validate_aligned (counters[i], max, CLIB_CACHE_LINE_BYTES);
281 stat_set_simple_counter (stat_segment_directory_entry_t * ep,
282 u32 thread_index, u32 index, u64 value)
285 counter_t *cb = ep->data;
290 vlib_stats_pop_heap2 (u64 * error_vector, u32 thread_index, void *oldheap,
293 stat_segment_main_t *sm = &stat_segment_main;
294 stat_segment_shared_header_t *shared_header = sm->shared_header;
296 ASSERT (shared_header);
299 vlib_stat_segment_lock ();
301 /* Reset the client hash table pointer, since it WILL change! */
302 vec_validate (sm->error_vector, thread_index);
303 sm->error_vector[thread_index] = error_vector;
305 shared_header->error_vector = sm->error_vector;
306 shared_header->directory_vector = sm->directory_vector;
309 vlib_stat_segment_unlock ();
310 clib_mem_set_heap (oldheap);
314 vlib_map_stat_segment_init (void)
316 stat_segment_main_t *sm = &stat_segment_main;
317 stat_segment_shared_header_t *shared_header;
321 char *mem_name = "stat_segment_test";
324 memory_size = sm->memory_size;
325 if (memory_size == 0)
326 memory_size = STAT_SEGMENT_DEFAULT_SIZE;
328 /* Create shared memory segment */
329 if ((mfd = memfd_create (mem_name, 0)) < 0)
330 return clib_error_return (0, "stat segment memfd_create failure");
333 if ((ftruncate (mfd, memory_size)) == -1)
334 return clib_error_return (0, "stat segment ftruncate failure");
337 mmap (NULL, memory_size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd,
339 return clib_error_return (0, "stat segment mmap failure");
343 create_mspace_with_base (((u8 *) memaddr) + getpagesize (),
344 memory_size - getpagesize (), 1 /* locked */ );
345 mspace_disable_expand (heap);
349 sm->directory_vector_by_name = hash_create_string (0, sizeof (uword));
350 sm->shared_header = shared_header = memaddr;
352 shared_header->version = STAT_SEGMENT_VERSION;
353 shared_header->base = memaddr;
355 sm->stat_segment_lockp = clib_mem_alloc (sizeof (clib_spinlock_t));
356 clib_spinlock_init (sm->stat_segment_lockp);
358 oldheap = clib_mem_set_heap (sm->heap);
360 /* Set up the name to counter-vector hash table */
361 sm->directory_vector = 0;
363 shared_header->epoch = 1;
365 /* Scalar stats and node counters */
366 vec_validate (sm->directory_vector, STAT_COUNTERS - 1);
368 strcpy(sm->directory_vector[STAT_COUNTER_##E].name, #p "/" #n); \
369 sm->directory_vector[STAT_COUNTER_##E].type = STAT_DIR_TYPE_##t;
370 foreach_stat_segment_counter_name
372 /* Save the vector in the shared segment, for clients */
373 shared_header->directory_vector = sm->directory_vector;
375 clib_mem_set_heap (oldheap);
377 /* Total shared memory size */
378 clib_mem_usage_t usage;
379 mheap_usage (sm->heap, &usage);
380 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_TOTAL].value =
387 name_sort_cmp (void *a1, void *a2)
389 stat_segment_directory_entry_t *n1 = a1;
390 stat_segment_directory_entry_t *n2 = a2;
392 return strcmp ((char *) n1->name, (char *) n2->name);
396 format_stat_dir_entry (u8 * s, va_list * args)
398 stat_segment_directory_entry_t *ep =
399 va_arg (*args, stat_segment_directory_entry_t *);
403 format_string = "%-74s %-10s %10lld";
407 case STAT_DIR_TYPE_SCALAR_INDEX:
408 type_name = "ScalarPtr";
411 case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE:
412 case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED:
413 type_name = "CMainPtr";
416 case STAT_DIR_TYPE_ERROR_INDEX:
417 type_name = "ErrIndex";
420 case STAT_DIR_TYPE_NAME_VECTOR:
421 type_name = "NameVector";
424 case STAT_DIR_TYPE_EMPTY:
429 type_name = "illegal!";
433 return format (s, format_string, ep->name, type_name, 0);
436 static clib_error_t *
437 show_stat_segment_command_fn (vlib_main_t * vm,
438 unformat_input_t * input,
439 vlib_cli_command_t * cmd)
441 stat_segment_main_t *sm = &stat_segment_main;
442 stat_segment_directory_entry_t *show_data;
447 if (unformat (input, "verbose"))
450 /* Lock even as reader, as this command doesn't handle epoch changes */
451 vlib_stat_segment_lock ();
452 show_data = vec_dup (sm->directory_vector);
453 vlib_stat_segment_unlock ();
455 vec_sort_with_function (show_data, name_sort_cmp);
457 vlib_cli_output (vm, "%-74s %10s %10s", "Name", "Type", "Value");
459 for (i = 0; i < vec_len (show_data); i++)
461 stat_segment_directory_entry_t *ep = vec_elt_at_index (show_data, i);
463 if (ep->type == STAT_DIR_TYPE_EMPTY)
466 vlib_cli_output (vm, "%-100U", format_stat_dir_entry,
467 vec_elt_at_index (show_data, i));
473 vlib_cli_output (vm, "%U", format_mheap, sm->heap, 0 /* verbose */ );
480 VLIB_CLI_COMMAND (show_stat_segment_command, static) =
482 .path = "show statistics segment",
483 .short_help = "show statistics segment [verbose]",
484 .function = show_stat_segment_command_fn,
489 * Node performance counters:
490 * total_calls [threads][node-index]
497 update_node_counters (stat_segment_main_t * sm)
499 vlib_main_t **stat_vms = 0;
500 vlib_node_t ***node_dups = 0;
502 static u32 no_max_nodes = 0;
504 vlib_node_get_nodes (0 /* vm, for barrier sync */ ,
505 (u32) ~ 0 /* all threads */ ,
506 1 /* include stats */ ,
507 0 /* barrier sync */ ,
508 &node_dups, &stat_vms);
510 u32 l = vec_len (node_dups[0]);
513 * Extend performance nodes if necessary
515 if (l > no_max_nodes)
517 void *oldheap = clib_mem_set_heap (sm->heap);
518 vlib_stat_segment_lock ();
520 stat_validate_counter_vector (&sm->directory_vector
521 [STAT_COUNTER_NODE_CLOCKS], l - 1);
522 stat_validate_counter_vector (&sm->directory_vector
523 [STAT_COUNTER_NODE_VECTORS], l - 1);
524 stat_validate_counter_vector (&sm->directory_vector
525 [STAT_COUNTER_NODE_CALLS], l - 1);
526 stat_validate_counter_vector (&sm->directory_vector
527 [STAT_COUNTER_NODE_SUSPENDS], l - 1);
529 vec_validate (sm->nodes, l - 1);
530 stat_segment_directory_entry_t *ep;
531 ep = &sm->directory_vector[STAT_COUNTER_NODE_NAMES];
532 ep->data = sm->nodes;
534 /* Update names dictionary */
535 vlib_node_t **nodes = node_dups[0];
537 for (i = 0; i < vec_len (nodes); i++)
539 vlib_node_t *n = nodes[i];
541 s = format (s, "%v%c", n->name, 0);
542 if (sm->nodes[n->index])
543 vec_free (sm->nodes[n->index]);
544 sm->nodes[n->index] = s;
546 vlib_stat_segment_unlock ();
547 clib_mem_set_heap (oldheap);
551 for (j = 0; j < vec_len (node_dups); j++)
553 vlib_node_t **nodes = node_dups[j];
555 for (i = 0; i < vec_len (nodes); i++)
557 counter_t **counters;
559 vlib_node_t *n = nodes[i];
561 counters = sm->directory_vector[STAT_COUNTER_NODE_CLOCKS].data;
563 c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks;
565 counters = sm->directory_vector[STAT_COUNTER_NODE_VECTORS].data;
567 c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors;
569 counters = sm->directory_vector[STAT_COUNTER_NODE_CALLS].data;
571 c[n->index] = n->stats_total.calls - n->stats_last_clear.calls;
573 counters = sm->directory_vector[STAT_COUNTER_NODE_SUSPENDS].data;
576 n->stats_total.suspends - n->stats_last_clear.suspends;
578 vec_free (node_dups[j]);
580 vec_free (node_dups);
585 do_stat_segment_updates (stat_segment_main_t * sm)
587 vlib_main_t *vm = vlib_mains[0];
591 vlib_main_t *this_vlib_main;
593 static int num_worker_threads_set;
596 * Set once at the beginning of time.
597 * Can't do this from the init routine, which happens before
598 * start_workers sets up vlib_mains...
600 if (PREDICT_FALSE (num_worker_threads_set == 0))
602 void *oldheap = clib_mem_set_heap (sm->heap);
603 vlib_stat_segment_lock ();
605 stat_validate_counter_vector (&sm->directory_vector
606 [STAT_COUNTER_VECTOR_RATE_PER_WORKER], 0);
607 num_worker_threads_set = 1;
608 vlib_stat_segment_unlock ();
609 clib_mem_set_heap (oldheap);
613 * Compute per-worker vector rates, and the average vector rate
618 for (i = 0; i < vec_len (vlib_mains); i++)
621 f64 this_vector_rate;
623 this_vlib_main = vlib_mains[i];
625 this_vector_rate = vlib_internal_node_vector_rate (this_vlib_main);
626 vlib_clear_internal_node_vector_rate (this_vlib_main);
628 vector_rate += this_vector_rate;
630 /* Set the per-worker rate */
631 stat_set_simple_counter (&sm->directory_vector
632 [STAT_COUNTER_VECTOR_RATE_PER_WORKER], i, 0,
636 /* And set the system average rate */
637 vector_rate /= (f64) (i > 1 ? i - 1 : 1);
639 sm->directory_vector[STAT_COUNTER_VECTOR_RATE].value = vector_rate;
642 * Compute the aggregate input rate
644 now = vlib_time_now (vm);
645 dt = now - sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value;
646 input_packets = vnet_get_aggregate_rx_packets ();
647 sm->directory_vector[STAT_COUNTER_INPUT_RATE].value =
648 (f64) (input_packets - sm->last_input_packets) / dt;
649 sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value = now;
650 sm->last_input_packets = input_packets;
651 sm->directory_vector[STAT_COUNTER_LAST_STATS_CLEAR].value =
652 vm->node_main.time_last_runtime_stats_clear;
654 /* Stats segment memory heap counter */
655 clib_mem_usage_t usage;
656 mheap_usage (sm->heap, &usage);
657 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_USED].value =
660 if (sm->node_counters_enabled)
661 update_node_counters (sm);
664 stat_segment_gauges_pool_t *g;
665 pool_foreach(g, sm->gauges,
667 g->fn(&sm->directory_vector[g->directory_index], g->caller_index);
671 /* Heartbeat, so clients detect we're still here */
672 sm->directory_vector[STAT_COUNTER_HEARTBEAT].value++;
676 * Accept connection on the socket and exchange the fd for the shared
679 static clib_error_t *
680 stats_socket_accept_ready (clib_file_t * uf)
682 stat_segment_main_t *sm = &stat_segment_main;
684 clib_socket_t client = { 0 };
686 err = clib_socket_accept (sm->socket, &client);
689 clib_error_report (err);
693 /* Send the fd across and close */
694 err = clib_socket_sendmsg (&client, 0, 0, &sm->memfd, 1);
696 clib_error_report (err);
697 clib_socket_close (&client);
702 static clib_error_t *
703 stats_segment_socket_init (void)
705 stat_segment_main_t *sm = &stat_segment_main;
707 clib_socket_t *s = clib_mem_alloc (sizeof (clib_socket_t));
709 memset (s, 0, sizeof (clib_socket_t));
710 s->config = (char *) sm->socket_name;
711 s->flags = CLIB_SOCKET_F_IS_SERVER | CLIB_SOCKET_F_SEQPACKET |
712 CLIB_SOCKET_F_ALLOW_GROUP_WRITE | CLIB_SOCKET_F_PASSCRED;
714 if ((error = clib_socket_init (s)))
717 clib_file_t template = { 0 };
718 template.read_function = stats_socket_accept_ready;
719 template.file_descriptor = s->fd;
720 template.description = format (0, "stats segment listener %s", s->config);
721 clib_file_add (&file_main, &template);
728 static clib_error_t *
729 stats_segment_socket_exit (vlib_main_t * vm)
732 * cleanup the listener socket on exit.
734 stat_segment_main_t *sm = &stat_segment_main;
735 unlink ((char *) sm->socket_name);
739 VLIB_MAIN_LOOP_EXIT_FUNCTION (stats_segment_socket_exit);
741 /* Overrides weak reference in vlib:node_cli.c */
743 vlib_get_stat_segment_update_rate (void)
745 return stat_segment_main.update_interval;
749 stat_segment_collector_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
752 stat_segment_main_t *sm = &stat_segment_main;
756 do_stat_segment_updates (sm);
757 vlib_process_suspend (vm, sm->update_interval);
759 return 0; /* or not */
762 static clib_error_t *
763 statseg_init (vlib_main_t * vm)
765 stat_segment_main_t *sm = &stat_segment_main;
767 /* set default socket file name when statseg config stanza is empty. */
768 if (!vec_len (sm->socket_name))
769 sm->socket_name = format (0, "%s/%s%c", vlib_unix_get_runtime_dir (),
770 STAT_SEGMENT_SOCKET_FILENAME, 0);
771 return stats_segment_socket_init ();
775 VLIB_INIT_FUNCTION (statseg_init) =
777 .runs_after = VLIB_INITS("unix_input_init"),
782 stat_segment_register_gauge (u8 * name, stat_segment_update_fn update_fn,
785 stat_segment_main_t *sm = &stat_segment_main;
786 stat_segment_shared_header_t *shared_header = sm->shared_header;
788 stat_segment_directory_entry_t e;
789 stat_segment_gauges_pool_t *gauge;
791 ASSERT (shared_header);
793 u32 vector_index = lookup_hash_index (name);
795 if (vector_index != STAT_SEGMENT_INDEX_INVALID) /* Already registered */
796 return clib_error_return (0, "%v is already registered", name);
798 memset (&e, 0, sizeof (e));
799 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
800 memcpy (e.name, name, vec_len (name));
802 oldheap = vlib_stats_push_heap (NULL);
803 vlib_stat_segment_lock ();
804 vector_index = vlib_stats_create_counter (&e, oldheap);
806 shared_header->directory_vector = sm->directory_vector;
808 vlib_stat_segment_unlock ();
809 clib_mem_set_heap (oldheap);
811 /* Back on our own heap */
812 pool_get (sm->gauges, gauge);
813 gauge->fn = update_fn;
814 gauge->caller_index = caller_index;
815 gauge->directory_index = vector_index;
821 stat_segment_register_state_counter (u8 * name, u32 * index)
823 stat_segment_main_t *sm = &stat_segment_main;
824 stat_segment_shared_header_t *shared_header = sm->shared_header;
826 stat_segment_directory_entry_t e;
828 ASSERT (shared_header);
829 ASSERT (vlib_get_thread_index () == 0);
831 u32 vector_index = lookup_hash_index (name);
833 if (vector_index != STAT_SEGMENT_INDEX_INVALID) /* Already registered */
834 return clib_error_return (0, "%v is already registered", name);
836 memset (&e, 0, sizeof (e));
837 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
838 memcpy (e.name, name, vec_len (name));
840 oldheap = vlib_stats_push_heap (NULL);
841 vlib_stat_segment_lock ();
843 vector_index = vlib_stats_create_counter (&e, oldheap);
845 shared_header->directory_vector = sm->directory_vector;
847 vlib_stat_segment_unlock ();
848 clib_mem_set_heap (oldheap);
850 *index = vector_index;
855 stat_segment_deregister_state_counter (u32 index)
857 stat_segment_main_t *sm = &stat_segment_main;
858 stat_segment_shared_header_t *shared_header = sm->shared_header;
859 stat_segment_directory_entry_t *e;
862 ASSERT (shared_header);
864 if (index > vec_len (sm->directory_vector))
865 return clib_error_return (0, "%u index does not exist", index);
867 e = &sm->directory_vector[index];
868 if (e->type != STAT_DIR_TYPE_SCALAR_INDEX)
869 return clib_error_return (0, "%u index cannot be deleted", index);
871 oldheap = vlib_stats_push_heap (NULL);
872 vlib_stat_segment_lock ();
874 vlib_stats_delete_counter (index, oldheap);
876 vlib_stat_segment_unlock ();
877 clib_mem_set_heap (oldheap);
883 stat_segment_set_state_counter (u32 index, u64 value)
885 stat_segment_main_t *sm = &stat_segment_main;
887 ASSERT (index < vec_len (sm->directory_vector));
888 sm->directory_vector[index].index = value;
891 static clib_error_t *
892 statseg_config (vlib_main_t * vm, unformat_input_t * input)
894 stat_segment_main_t *sm = &stat_segment_main;
895 sm->update_interval = 10.0;
897 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
899 if (unformat (input, "socket-name %s", &sm->socket_name))
901 /* DEPRECATE: default (does nothing) */
902 else if (unformat (input, "default"))
904 else if (unformat (input, "size %U",
905 unformat_memory_size, &sm->memory_size))
907 else if (unformat (input, "per-node-counters on"))
908 sm->node_counters_enabled = 1;
909 else if (unformat (input, "per-node-counters off"))
910 sm->node_counters_enabled = 0;
911 else if (unformat (input, "update-interval %f", &sm->update_interval))
914 return clib_error_return (0, "unknown input `%U'",
915 format_unformat_error, input);
919 * NULL-terminate socket name string
920 * clib_socket_init()->socket_config() use C str*
922 if (vec_len (sm->socket_name))
923 vec_terminate_c_string (sm->socket_name);
928 VLIB_EARLY_CONFIG_FUNCTION (statseg_config, "statseg");
930 static clib_error_t *
931 statseg_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
933 stat_segment_main_t *sm = &stat_segment_main;
935 void *oldheap = vlib_stats_push_heap (sm->interfaces);
936 vlib_stat_segment_lock ();
938 vec_validate (sm->interfaces, sw_if_index);
941 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
942 vnet_sw_interface_t *si_sup =
943 vnet_get_sup_sw_interface (vnm, si->sw_if_index);
944 vnet_hw_interface_t *hi_sup;
946 ASSERT (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
947 hi_sup = vnet_get_hw_interface (vnm, si_sup->hw_if_index);
950 s = format (s, "%v", hi_sup->name);
951 if (si->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
952 s = format (s, ".%d", si->sub.id);
953 s = format (s, "%c", 0);
954 sm->interfaces[sw_if_index] = s;
958 vec_free (sm->interfaces[sw_if_index]);
959 sm->interfaces[sw_if_index] = 0;
962 stat_segment_directory_entry_t *ep;
963 ep = &sm->directory_vector[STAT_COUNTER_INTERFACE_NAMES];
964 ep->data = sm->interfaces;
966 vlib_stat_segment_unlock ();
967 clib_mem_set_heap (oldheap);
972 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (statseg_sw_interface_add_del);
975 VLIB_REGISTER_NODE (stat_segment_collector, static) =
977 .function = stat_segment_collector_process,
978 .name = "statseg-collector-process",
979 .type = VLIB_NODE_TYPE_PROCESS,
985 * fd.io coding-style-patch-verification: ON
988 * eval: (c-set-style "gnu")