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;
160 stat_segment_shared_header_t *shared_header = sm->shared_header;
162 /* Not all counters have names / hash-table entries */
163 if (!cm->name && !cm->stat_segment_name)
167 vlib_stat_segment_lock ();
169 /* Lookup hash-table is on the main heap */
170 char *stat_segment_name =
171 cm->stat_segment_name ? cm->stat_segment_name : cm->name;
172 u32 index = lookup_hash_index ((u8 *) stat_segment_name);
174 e = &sm->directory_vector[index];
175 hash_unset (sm->directory_vector_by_name, &e->name);
177 u64 *offset_vector = stat_segment_pointer (shared_header, e->offset_vector);
179 void *oldheap = clib_mem_set_heap (sm->heap); /* Enter stats segment */
180 vec_free (offset_vector);
181 clib_mem_set_heap (oldheap); /* Exit stats segment */
183 memset (e, 0, sizeof (*e));
184 e->type = STAT_DIR_TYPE_EMPTY;
186 vlib_stat_segment_unlock ();
190 vlib_stats_pop_heap (void *cm_arg, void *oldheap, u32 cindex,
191 stat_directory_type_t type)
193 vlib_simple_counter_main_t *cm = (vlib_simple_counter_main_t *) cm_arg;
194 stat_segment_main_t *sm = &stat_segment_main;
195 stat_segment_shared_header_t *shared_header = sm->shared_header;
196 char *stat_segment_name;
197 stat_segment_directory_entry_t e = { 0 };
199 /* Not all counters have names / hash-table entries */
200 if (!cm->name && !cm->stat_segment_name)
202 clib_mem_set_heap (oldheap);
206 ASSERT (shared_header);
208 vlib_stat_segment_lock ();
210 /* Lookup hash-table is on the main heap */
212 cm->stat_segment_name ? cm->stat_segment_name : cm->name;
214 clib_mem_set_heap (oldheap); /* Exit stats segment */
215 u32 vector_index = lookup_hash_index ((u8 *) stat_segment_name);
216 /* Back to stats segment */
217 clib_mem_set_heap (sm->heap); /* Re-enter stat segment */
220 /* Update the vector */
221 if (vector_index == STAT_SEGMENT_INDEX_INVALID)
223 strncpy (e.name, stat_segment_name, 128 - 1);
225 vector_index = vlib_stats_create_counter (&e, oldheap);
228 stat_segment_directory_entry_t *ep = &sm->directory_vector[vector_index];
229 ep->offset = stat_segment_offset (shared_header, cm->counters); /* Vector of threads of vectors of counters */
231 ep->offset_vector ? stat_segment_pointer (shared_header,
232 ep->offset_vector) : 0;
234 /* Update the 2nd dimension offset vector */
236 vec_validate (offset_vector, vec_len (cm->counters) - 1);
238 if (sm->last != offset_vector)
240 for (i = 0; i < vec_len (cm->counters); i++)
242 stat_segment_offset (shared_header, cm->counters[i]);
245 offset_vector[cindex] =
246 stat_segment_offset (shared_header, cm->counters[cindex]);
248 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
249 sm->directory_vector[vector_index].offset =
250 stat_segment_offset (shared_header, cm->counters);
252 /* Reset the client hash table pointer, since it WILL change! */
253 shared_header->directory_offset =
254 stat_segment_offset (shared_header, sm->directory_vector);
256 vlib_stat_segment_unlock ();
257 clib_mem_set_heap (oldheap);
261 vlib_stats_register_error_index (void *oldheap, u8 * name, u64 * em_vec,
264 stat_segment_main_t *sm = &stat_segment_main;
265 stat_segment_shared_header_t *shared_header = sm->shared_header;
266 stat_segment_directory_entry_t e;
268 ASSERT (shared_header);
270 vlib_stat_segment_lock ();
271 clib_mem_set_heap (oldheap); /* Exit stats segment */
272 u32 vector_index = lookup_hash_index (name);
273 /* Back to stats segment */
274 clib_mem_set_heap (sm->heap); /* Re-enter stat segment */
276 if (vector_index == STAT_SEGMENT_INDEX_INVALID)
278 memcpy (e.name, name, vec_len (name));
279 e.name[vec_len (name)] = '\0';
280 e.type = STAT_DIR_TYPE_ERROR_INDEX;
283 vector_index = vlib_stats_create_counter (&e, oldheap);
285 /* Warn clients to refresh any pointers they might be holding */
286 shared_header->directory_offset =
287 stat_segment_offset (shared_header, sm->directory_vector);
290 vlib_stat_segment_unlock ();
294 stat_validate_counter_vector (stat_segment_directory_entry_t * ep, u32 max)
296 stat_segment_main_t *sm = &stat_segment_main;
297 stat_segment_shared_header_t *shared_header = sm->shared_header;
298 counter_t **counters =
299 ep->offset ? stat_segment_pointer (shared_header, ep->offset) : 0;
300 vlib_thread_main_t *tm = vlib_get_thread_main ();
302 u64 *offset_vector = 0;
304 vec_validate_aligned (counters, tm->n_vlib_mains - 1,
305 CLIB_CACHE_LINE_BYTES);
306 ep->offset = stat_segment_offset (shared_header, counters);
308 for (i = 0; i < tm->n_vlib_mains; i++)
310 vec_validate_aligned (counters[i], max, CLIB_CACHE_LINE_BYTES);
311 vec_add1 (offset_vector,
312 stat_segment_offset (shared_header, counters[i]));
315 if (ep->offset_vector)
317 u64 *p = stat_segment_pointer (sm->shared_header, ep->offset_vector);
320 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
324 stat_set_simple_counter (stat_segment_directory_entry_t * ep,
325 u32 thread_index, u32 index, u64 value)
327 stat_segment_main_t *sm = &stat_segment_main;
328 stat_segment_shared_header_t *shared_header = sm->shared_header;
330 ASSERT (shared_header);
331 counter_t *offset_vector =
332 stat_segment_pointer (sm->shared_header, ep->offset_vector);
334 stat_segment_pointer (sm->shared_header, offset_vector[thread_index]);
339 vlib_stats_pop_heap2 (u64 * error_vector, u32 thread_index, void *oldheap,
342 stat_segment_main_t *sm = &stat_segment_main;
343 stat_segment_shared_header_t *shared_header = sm->shared_header;
345 ASSERT (shared_header);
348 vlib_stat_segment_lock ();
350 /* Reset the client hash table pointer, since it WILL change! */
351 vec_validate (sm->error_vector, thread_index);
352 sm->error_vector[thread_index] =
353 stat_segment_offset (shared_header, error_vector);
355 shared_header->error_offset =
356 stat_segment_offset (shared_header, sm->error_vector);
357 shared_header->directory_offset =
358 stat_segment_offset (shared_header, sm->directory_vector);
361 vlib_stat_segment_unlock ();
362 clib_mem_set_heap (oldheap);
366 vlib_map_stat_segment_init (void)
368 stat_segment_main_t *sm = &stat_segment_main;
369 stat_segment_shared_header_t *shared_header;
373 char *mem_name = "stat_segment_test";
376 memory_size = sm->memory_size;
377 if (memory_size == 0)
378 memory_size = STAT_SEGMENT_DEFAULT_SIZE;
380 /* Create shared memory segment */
381 if ((mfd = memfd_create (mem_name, 0)) < 0)
382 return clib_error_return (0, "stat segment memfd_create failure");
385 if ((ftruncate (mfd, memory_size)) == -1)
386 return clib_error_return (0, "stat segment ftruncate failure");
389 mmap (NULL, memory_size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd,
391 return clib_error_return (0, "stat segment mmap failure");
394 #if USE_DLMALLOC == 0
395 heap = mheap_alloc_with_flags (((u8 *) memaddr) + getpagesize (),
396 memory_size - getpagesize (),
397 MHEAP_FLAG_DISABLE_VM |
398 MHEAP_FLAG_THREAD_SAFE);
401 create_mspace_with_base (((u8 *) memaddr) + getpagesize (),
402 memory_size - getpagesize (), 1 /* locked */ );
403 mspace_disable_expand (heap);
409 sm->directory_vector_by_name = hash_create_string (0, sizeof (uword));
410 sm->shared_header = shared_header = memaddr;
412 shared_header->version = STAT_SEGMENT_VERSION;
414 sm->stat_segment_lockp = clib_mem_alloc (sizeof (clib_spinlock_t));
415 clib_spinlock_init (sm->stat_segment_lockp);
417 oldheap = clib_mem_set_heap (sm->heap);
419 /* Set up the name to counter-vector hash table */
420 sm->directory_vector = 0;
422 shared_header->epoch = 1;
424 /* Scalar stats and node counters */
425 vec_validate (sm->directory_vector, STAT_COUNTERS - 1);
427 strcpy(sm->directory_vector[STAT_COUNTER_##E].name, #p "/" #n); \
428 sm->directory_vector[STAT_COUNTER_##E].type = STAT_DIR_TYPE_##t;
429 foreach_stat_segment_counter_name
431 /* Save the vector offset in the shared segment, for clients */
432 shared_header->directory_offset =
433 stat_segment_offset (shared_header, sm->directory_vector);
435 clib_mem_set_heap (oldheap);
437 /* Total shared memory size */
438 clib_mem_usage_t usage;
439 mheap_usage (sm->heap, &usage);
440 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_TOTAL].value =
447 name_sort_cmp (void *a1, void *a2)
449 stat_segment_directory_entry_t *n1 = a1;
450 stat_segment_directory_entry_t *n2 = a2;
452 return strcmp ((char *) n1->name, (char *) n2->name);
456 format_stat_dir_entry (u8 * s, va_list * args)
458 stat_segment_directory_entry_t *ep =
459 va_arg (*args, stat_segment_directory_entry_t *);
463 format_string = "%-74s %-10s %10lld";
467 case STAT_DIR_TYPE_SCALAR_INDEX:
468 type_name = "ScalarPtr";
471 case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE:
472 case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED:
473 type_name = "CMainPtr";
476 case STAT_DIR_TYPE_ERROR_INDEX:
477 type_name = "ErrIndex";
480 case STAT_DIR_TYPE_NAME_VECTOR:
481 type_name = "NameVector";
484 case STAT_DIR_TYPE_EMPTY:
489 type_name = "illegal!";
493 return format (s, format_string, ep->name, type_name, ep->offset);
496 static clib_error_t *
497 show_stat_segment_command_fn (vlib_main_t * vm,
498 unformat_input_t * input,
499 vlib_cli_command_t * cmd)
501 stat_segment_main_t *sm = &stat_segment_main;
502 stat_segment_directory_entry_t *show_data;
507 if (unformat (input, "verbose"))
510 /* Lock even as reader, as this command doesn't handle epoch changes */
511 vlib_stat_segment_lock ();
512 show_data = vec_dup (sm->directory_vector);
513 vlib_stat_segment_unlock ();
515 vec_sort_with_function (show_data, name_sort_cmp);
517 vlib_cli_output (vm, "%-74s %10s %10s", "Name", "Type", "Value");
519 for (i = 0; i < vec_len (show_data); i++)
521 stat_segment_directory_entry_t *ep = vec_elt_at_index (show_data, i);
523 if (ep->type == STAT_DIR_TYPE_EMPTY)
526 vlib_cli_output (vm, "%-100U", format_stat_dir_entry,
527 vec_elt_at_index (show_data, i));
533 vlib_cli_output (vm, "%U", format_mheap, sm->heap, 0 /* verbose */ );
540 VLIB_CLI_COMMAND (show_stat_segment_command, static) =
542 .path = "show statistics segment",
543 .short_help = "show statistics segment [verbose]",
544 .function = show_stat_segment_command_fn,
549 * Node performance counters:
550 * total_calls [threads][node-index]
557 update_node_counters (stat_segment_main_t * sm)
559 vlib_main_t **stat_vms = 0;
560 vlib_node_t ***node_dups = 0;
562 stat_segment_shared_header_t *shared_header = sm->shared_header;
563 static u32 no_max_nodes = 0;
565 vlib_node_get_nodes (0 /* vm, for barrier sync */ ,
566 (u32) ~ 0 /* all threads */ ,
567 1 /* include stats */ ,
568 0 /* barrier sync */ ,
569 &node_dups, &stat_vms);
571 u32 l = vec_len (node_dups[0]);
574 * Extend performance nodes if necessary
576 if (l > no_max_nodes)
578 void *oldheap = clib_mem_set_heap (sm->heap);
579 vlib_stat_segment_lock ();
581 stat_validate_counter_vector (&sm->directory_vector
582 [STAT_COUNTER_NODE_CLOCKS], l - 1);
583 stat_validate_counter_vector (&sm->directory_vector
584 [STAT_COUNTER_NODE_VECTORS], l - 1);
585 stat_validate_counter_vector (&sm->directory_vector
586 [STAT_COUNTER_NODE_CALLS], l - 1);
587 stat_validate_counter_vector (&sm->directory_vector
588 [STAT_COUNTER_NODE_SUSPENDS], l - 1);
590 vec_validate (sm->nodes, l - 1);
591 stat_segment_directory_entry_t *ep;
592 ep = &sm->directory_vector[STAT_COUNTER_NODE_NAMES];
593 ep->offset = stat_segment_offset (shared_header, sm->nodes);
597 ep->offset_vector ? stat_segment_pointer (shared_header,
598 ep->offset_vector) : 0;
599 /* Update names dictionary */
600 vec_validate (offset_vector, l - 1);
601 vlib_node_t **nodes = node_dups[0];
603 for (i = 0; i < vec_len (nodes); i++)
605 vlib_node_t *n = nodes[i];
607 s = format (s, "%v%c", n->name, 0);
608 if (sm->nodes[n->index])
609 vec_free (sm->nodes[n->index]);
610 sm->nodes[n->index] = s;
612 sm->nodes[i] ? stat_segment_offset (shared_header,
616 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
618 vlib_stat_segment_unlock ();
619 clib_mem_set_heap (oldheap);
623 for (j = 0; j < vec_len (node_dups); j++)
625 vlib_node_t **nodes = node_dups[j];
627 for (i = 0; i < vec_len (nodes); i++)
629 counter_t **counters;
631 vlib_node_t *n = nodes[i];
634 stat_segment_pointer (shared_header,
636 [STAT_COUNTER_NODE_CLOCKS].offset);
638 c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks;
641 stat_segment_pointer (shared_header,
643 [STAT_COUNTER_NODE_VECTORS].offset);
645 c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors;
648 stat_segment_pointer (shared_header,
650 [STAT_COUNTER_NODE_CALLS].offset);
652 c[n->index] = n->stats_total.calls - n->stats_last_clear.calls;
655 stat_segment_pointer (shared_header,
657 [STAT_COUNTER_NODE_SUSPENDS].offset);
660 n->stats_total.suspends - n->stats_last_clear.suspends;
662 vec_free (node_dups[j]);
664 vec_free (node_dups);
669 do_stat_segment_updates (stat_segment_main_t * sm)
671 vlib_main_t *vm = vlib_mains[0];
675 vlib_main_t *this_vlib_main;
677 static int num_worker_threads_set;
680 * Set once at the beginning of time.
681 * Can't do this from the init routine, which happens before
682 * start_workers sets up vlib_mains...
684 if (PREDICT_FALSE (num_worker_threads_set == 0))
686 void *oldheap = clib_mem_set_heap (sm->heap);
687 vlib_stat_segment_lock ();
689 stat_validate_counter_vector (&sm->directory_vector
690 [STAT_COUNTER_VECTOR_RATE_PER_WORKER], 0);
691 num_worker_threads_set = 1;
692 vlib_stat_segment_unlock ();
693 clib_mem_set_heap (oldheap);
697 * Compute per-worker vector rates, and the average vector rate
702 for (i = 0; i < vec_len (vlib_mains); i++)
705 f64 this_vector_rate;
707 this_vlib_main = vlib_mains[i];
709 this_vector_rate = vlib_internal_node_vector_rate (this_vlib_main);
710 vlib_clear_internal_node_vector_rate (this_vlib_main);
712 vector_rate += this_vector_rate;
714 /* Set the per-worker rate */
715 stat_set_simple_counter (&sm->directory_vector
716 [STAT_COUNTER_VECTOR_RATE_PER_WORKER], i, 0,
720 /* And set the system average rate */
721 vector_rate /= (f64) (i > 1 ? i - 1 : 1);
723 sm->directory_vector[STAT_COUNTER_VECTOR_RATE].value = vector_rate;
726 * Compute the aggregate input rate
728 now = vlib_time_now (vm);
729 dt = now - sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value;
730 input_packets = vnet_get_aggregate_rx_packets ();
731 sm->directory_vector[STAT_COUNTER_INPUT_RATE].value =
732 (f64) (input_packets - sm->last_input_packets) / dt;
733 sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value = now;
734 sm->last_input_packets = input_packets;
735 sm->directory_vector[STAT_COUNTER_LAST_STATS_CLEAR].value =
736 vm->node_main.time_last_runtime_stats_clear;
738 /* Stats segment memory heap counter */
739 clib_mem_usage_t usage;
740 mheap_usage (sm->heap, &usage);
741 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_USED].value =
744 if (sm->node_counters_enabled)
745 update_node_counters (sm);
748 stat_segment_gauges_pool_t *g;
749 pool_foreach(g, sm->gauges,
751 g->fn(&sm->directory_vector[g->directory_index], g->caller_index);
755 /* Heartbeat, so clients detect we're still here */
756 sm->directory_vector[STAT_COUNTER_HEARTBEAT].value++;
760 * Accept connection on the socket and exchange the fd for the shared
763 static clib_error_t *
764 stats_socket_accept_ready (clib_file_t * uf)
766 stat_segment_main_t *sm = &stat_segment_main;
768 clib_socket_t client = { 0 };
770 err = clib_socket_accept (sm->socket, &client);
773 clib_error_report (err);
777 /* Send the fd across and close */
778 err = clib_socket_sendmsg (&client, 0, 0, &sm->memfd, 1);
780 clib_error_report (err);
781 clib_socket_close (&client);
787 stats_segment_socket_init (void)
789 stat_segment_main_t *sm = &stat_segment_main;
791 clib_socket_t *s = clib_mem_alloc (sizeof (clib_socket_t));
793 memset (s, 0, sizeof (clib_socket_t));
794 s->config = (char *) sm->socket_name;
795 s->flags = CLIB_SOCKET_F_IS_SERVER | CLIB_SOCKET_F_SEQPACKET |
796 CLIB_SOCKET_F_ALLOW_GROUP_WRITE | CLIB_SOCKET_F_PASSCRED;
798 if ((error = clib_socket_init (s)))
800 clib_error_report (error);
804 clib_file_t template = { 0 };
805 template.read_function = stats_socket_accept_ready;
806 template.file_descriptor = s->fd;
807 template.description = format (0, "stats segment listener %s", s->config);
808 clib_file_add (&file_main, &template);
813 static clib_error_t *
814 stats_segment_socket_exit (vlib_main_t * vm)
817 * cleanup the listener socket on exit.
819 stat_segment_main_t *sm = &stat_segment_main;
820 unlink ((char *) sm->socket_name);
824 VLIB_MAIN_LOOP_EXIT_FUNCTION (stats_segment_socket_exit);
826 /* Overrides weak reference in vlib:node_cli.c */
828 vlib_get_stat_segment_update_rate (void)
830 return stat_segment_main.update_interval;
834 stat_segment_collector_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
837 stat_segment_main_t *sm = &stat_segment_main;
841 do_stat_segment_updates (sm);
842 vlib_process_suspend (vm, sm->update_interval);
844 return 0; /* or not */
847 static clib_error_t *
848 statseg_init (vlib_main_t * vm)
850 stat_segment_main_t *sm = &stat_segment_main;
853 stats_segment_socket_init ();
859 VLIB_INIT_FUNCTION (statseg_init) =
861 .runs_after = VLIB_INITS("unix_input_init"),
866 stat_segment_register_gauge (u8 * name, stat_segment_update_fn update_fn,
869 stat_segment_main_t *sm = &stat_segment_main;
870 stat_segment_shared_header_t *shared_header = sm->shared_header;
872 stat_segment_directory_entry_t e;
873 stat_segment_gauges_pool_t *gauge;
875 ASSERT (shared_header);
877 u32 vector_index = lookup_hash_index (name);
879 if (vector_index != STAT_SEGMENT_INDEX_INVALID) /* Already registered */
880 return clib_error_return (0, "%v is already registered", name);
882 memset (&e, 0, sizeof (e));
883 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
884 memcpy (e.name, name, vec_len (name));
886 oldheap = vlib_stats_push_heap (NULL);
887 vlib_stat_segment_lock ();
888 vector_index = vlib_stats_create_counter (&e, oldheap);
890 shared_header->directory_offset =
891 stat_segment_offset (shared_header, sm->directory_vector);
893 vlib_stat_segment_unlock ();
894 clib_mem_set_heap (oldheap);
896 /* Back on our own heap */
897 pool_get (sm->gauges, gauge);
898 gauge->fn = update_fn;
899 gauge->caller_index = caller_index;
900 gauge->directory_index = vector_index;
906 stat_segment_register_state_counter (u8 * name, u32 * index)
908 stat_segment_main_t *sm = &stat_segment_main;
909 stat_segment_shared_header_t *shared_header = sm->shared_header;
911 stat_segment_directory_entry_t e;
913 ASSERT (shared_header);
914 ASSERT (vlib_get_thread_index () == 0);
916 u32 vector_index = lookup_hash_index (name);
918 if (vector_index != STAT_SEGMENT_INDEX_INVALID) /* Already registered */
919 return clib_error_return (0, "%v is already registered", name);
921 memset (&e, 0, sizeof (e));
922 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
923 memcpy (e.name, name, vec_len (name));
925 oldheap = vlib_stats_push_heap (NULL);
926 vlib_stat_segment_lock ();
928 vector_index = vlib_stats_create_counter (&e, oldheap);
930 shared_header->directory_offset =
931 stat_segment_offset (shared_header, sm->directory_vector);
933 vlib_stat_segment_unlock ();
934 clib_mem_set_heap (oldheap);
936 *index = vector_index;
941 stat_segment_deregister_state_counter (u32 index)
943 stat_segment_main_t *sm = &stat_segment_main;
944 stat_segment_shared_header_t *shared_header = sm->shared_header;
945 stat_segment_directory_entry_t *e;
948 ASSERT (shared_header);
950 if (index > vec_len (sm->directory_vector))
951 return clib_error_return (0, "%u index does not exist", index);
953 e = &sm->directory_vector[index];
954 if (e->type != STAT_DIR_TYPE_SCALAR_INDEX)
955 return clib_error_return (0, "%u index cannot be deleted", index);
957 oldheap = vlib_stats_push_heap (NULL);
958 vlib_stat_segment_lock ();
960 vlib_stats_delete_counter (index, oldheap);
962 vlib_stat_segment_unlock ();
963 clib_mem_set_heap (oldheap);
969 stat_segment_set_state_counter (u32 index, u64 value)
971 stat_segment_main_t *sm = &stat_segment_main;
973 ASSERT (index < vec_len (sm->directory_vector));
974 sm->directory_vector[index].index = value;
977 static clib_error_t *
978 statseg_config (vlib_main_t * vm, unformat_input_t * input)
980 stat_segment_main_t *sm = &stat_segment_main;
981 sm->update_interval = 10.0;
983 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
985 if (unformat (input, "socket-name %s", &sm->socket_name))
987 else if (unformat (input, "default"))
989 vec_reset_length (sm->socket_name);
990 sm->socket_name = format (sm->socket_name, "%s",
991 STAT_SEGMENT_SOCKET_FILE);
993 else if (unformat (input, "size %U",
994 unformat_memory_size, &sm->memory_size))
996 else if (unformat (input, "per-node-counters on"))
997 sm->node_counters_enabled = 1;
998 else if (unformat (input, "per-node-counters off"))
999 sm->node_counters_enabled = 0;
1000 else if (unformat (input, "update-interval %f", &sm->update_interval))
1003 return clib_error_return (0, "unknown input `%U'",
1004 format_unformat_error, input);
1007 /* set default socket file name when statseg config stanza is empty. */
1008 if (!vec_len (sm->socket_name))
1009 sm->socket_name = format (sm->socket_name, "%s",
1010 STAT_SEGMENT_SOCKET_FILE);
1012 * NULL-terminate socket name string
1013 * clib_socket_init()->socket_config() use C str*
1015 vec_terminate_c_string (sm->socket_name);
1020 VLIB_EARLY_CONFIG_FUNCTION (statseg_config, "statseg");
1022 static clib_error_t *
1023 statseg_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
1025 stat_segment_main_t *sm = &stat_segment_main;
1026 stat_segment_shared_header_t *shared_header = sm->shared_header;
1028 void *oldheap = vlib_stats_push_heap (sm->interfaces);
1029 vlib_stat_segment_lock ();
1031 vec_validate (sm->interfaces, sw_if_index);
1034 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
1035 vnet_sw_interface_t *si_sup =
1036 vnet_get_sup_sw_interface (vnm, si->sw_if_index);
1037 vnet_hw_interface_t *hi_sup;
1039 ASSERT (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1040 hi_sup = vnet_get_hw_interface (vnm, si_sup->hw_if_index);
1043 s = format (s, "%v", hi_sup->name);
1044 if (si->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
1045 s = format (s, ".%d", si->sub.id);
1046 s = format (s, "%c", 0);
1047 sm->interfaces[sw_if_index] = s;
1051 vec_free (sm->interfaces[sw_if_index]);
1052 sm->interfaces[sw_if_index] = 0;
1055 stat_segment_directory_entry_t *ep;
1056 ep = &sm->directory_vector[STAT_COUNTER_INTERFACE_NAMES];
1057 ep->offset = stat_segment_offset (shared_header, sm->interfaces);
1060 u64 *offset_vector =
1061 ep->offset_vector ? stat_segment_pointer (shared_header,
1062 ep->offset_vector) : 0;
1064 vec_validate (offset_vector, vec_len (sm->interfaces) - 1);
1066 if (sm->last != sm->interfaces)
1068 /* the interface vector moved, so need to recalulate the offset array */
1069 for (i = 0; i < vec_len (sm->interfaces); i++)
1072 sm->interfaces[i] ? stat_segment_offset (shared_header,
1073 sm->interfaces[i]) : 0;
1078 offset_vector[sw_if_index] =
1079 sm->interfaces[sw_if_index] ?
1080 stat_segment_offset (shared_header, sm->interfaces[sw_if_index]) : 0;
1082 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
1084 vlib_stat_segment_unlock ();
1085 clib_mem_set_heap (oldheap);
1090 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (statseg_sw_interface_add_del);
1093 VLIB_REGISTER_NODE (stat_segment_collector, static) =
1095 .function = stat_segment_collector_process,
1096 .name = "statseg-collector-process",
1097 .type = VLIB_NODE_TYPE_PROCESS,
1103 * fd.io coding-style-patch-verification: ON
1106 * eval: (c-set-style "gnu")