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 = 0;
299 vlib_thread_main_t *tm = vlib_get_thread_main ();
301 u64 *offset_vector = 0;
303 vec_validate_aligned (counters, tm->n_vlib_mains - 1,
304 CLIB_CACHE_LINE_BYTES);
305 for (i = 0; i < tm->n_vlib_mains; i++)
307 vec_validate_aligned (counters[i], max, CLIB_CACHE_LINE_BYTES);
308 vec_add1 (offset_vector,
309 stat_segment_offset (shared_header, counters[i]));
311 ep->offset = stat_segment_offset (shared_header, counters);
312 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
316 stat_set_simple_counter (stat_segment_directory_entry_t * ep,
317 u32 thread_index, u32 index, u64 value)
319 stat_segment_main_t *sm = &stat_segment_main;
320 stat_segment_shared_header_t *shared_header = sm->shared_header;
322 ASSERT (shared_header);
323 counter_t *offset_vector =
324 stat_segment_pointer (sm->shared_header, ep->offset_vector);
326 stat_segment_pointer (sm->shared_header, offset_vector[thread_index]);
331 vlib_stats_pop_heap2 (u64 * error_vector, u32 thread_index, void *oldheap,
334 stat_segment_main_t *sm = &stat_segment_main;
335 stat_segment_shared_header_t *shared_header = sm->shared_header;
337 ASSERT (shared_header);
340 vlib_stat_segment_lock ();
342 /* Reset the client hash table pointer, since it WILL change! */
343 vec_validate (sm->error_vector, thread_index);
344 sm->error_vector[thread_index] =
345 stat_segment_offset (shared_header, error_vector);
347 shared_header->error_offset =
348 stat_segment_offset (shared_header, sm->error_vector);
349 shared_header->directory_offset =
350 stat_segment_offset (shared_header, sm->directory_vector);
353 vlib_stat_segment_unlock ();
354 clib_mem_set_heap (oldheap);
358 vlib_map_stat_segment_init (void)
360 stat_segment_main_t *sm = &stat_segment_main;
361 stat_segment_shared_header_t *shared_header;
365 char *mem_name = "stat_segment_test";
368 memory_size = sm->memory_size;
369 if (memory_size == 0)
370 memory_size = STAT_SEGMENT_DEFAULT_SIZE;
372 /* Create shared memory segment */
373 if ((mfd = memfd_create (mem_name, 0)) < 0)
374 return clib_error_return (0, "stat segment memfd_create failure");
377 if ((ftruncate (mfd, memory_size)) == -1)
378 return clib_error_return (0, "stat segment ftruncate failure");
381 mmap (NULL, memory_size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd,
383 return clib_error_return (0, "stat segment mmap failure");
387 create_mspace_with_base (((u8 *) memaddr) + getpagesize (),
388 memory_size - getpagesize (), 1 /* locked */ );
389 mspace_disable_expand (heap);
393 sm->directory_vector_by_name = hash_create_string (0, sizeof (uword));
394 sm->shared_header = shared_header = memaddr;
396 shared_header->version = STAT_SEGMENT_VERSION;
398 sm->stat_segment_lockp = clib_mem_alloc (sizeof (clib_spinlock_t));
399 clib_spinlock_init (sm->stat_segment_lockp);
401 oldheap = clib_mem_set_heap (sm->heap);
403 /* Set up the name to counter-vector hash table */
404 sm->directory_vector = 0;
406 shared_header->epoch = 1;
408 /* Scalar stats and node counters */
409 vec_validate (sm->directory_vector, STAT_COUNTERS - 1);
411 strcpy(sm->directory_vector[STAT_COUNTER_##E].name, #p "/" #n); \
412 sm->directory_vector[STAT_COUNTER_##E].type = STAT_DIR_TYPE_##t;
413 foreach_stat_segment_counter_name
415 /* Save the vector offset in the shared segment, for clients */
416 shared_header->directory_offset =
417 stat_segment_offset (shared_header, sm->directory_vector);
419 clib_mem_set_heap (oldheap);
421 /* Total shared memory size */
422 clib_mem_usage_t usage;
423 mheap_usage (sm->heap, &usage);
424 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_TOTAL].value =
431 name_sort_cmp (void *a1, void *a2)
433 stat_segment_directory_entry_t *n1 = a1;
434 stat_segment_directory_entry_t *n2 = a2;
436 return strcmp ((char *) n1->name, (char *) n2->name);
440 format_stat_dir_entry (u8 * s, va_list * args)
442 stat_segment_directory_entry_t *ep =
443 va_arg (*args, stat_segment_directory_entry_t *);
447 format_string = "%-74s %-10s %10lld";
451 case STAT_DIR_TYPE_SCALAR_INDEX:
452 type_name = "ScalarPtr";
455 case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE:
456 case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED:
457 type_name = "CMainPtr";
460 case STAT_DIR_TYPE_ERROR_INDEX:
461 type_name = "ErrIndex";
464 case STAT_DIR_TYPE_NAME_VECTOR:
465 type_name = "NameVector";
468 case STAT_DIR_TYPE_EMPTY:
473 type_name = "illegal!";
477 return format (s, format_string, ep->name, type_name, ep->offset);
480 static clib_error_t *
481 show_stat_segment_command_fn (vlib_main_t * vm,
482 unformat_input_t * input,
483 vlib_cli_command_t * cmd)
485 stat_segment_main_t *sm = &stat_segment_main;
486 stat_segment_directory_entry_t *show_data;
491 if (unformat (input, "verbose"))
494 /* Lock even as reader, as this command doesn't handle epoch changes */
495 vlib_stat_segment_lock ();
496 show_data = vec_dup (sm->directory_vector);
497 vlib_stat_segment_unlock ();
499 vec_sort_with_function (show_data, name_sort_cmp);
501 vlib_cli_output (vm, "%-74s %10s %10s", "Name", "Type", "Value");
503 for (i = 0; i < vec_len (show_data); i++)
505 stat_segment_directory_entry_t *ep = vec_elt_at_index (show_data, i);
507 if (ep->type == STAT_DIR_TYPE_EMPTY)
510 vlib_cli_output (vm, "%-100U", format_stat_dir_entry,
511 vec_elt_at_index (show_data, i));
517 vlib_cli_output (vm, "%U", format_mheap, sm->heap, 0 /* verbose */ );
524 VLIB_CLI_COMMAND (show_stat_segment_command, static) =
526 .path = "show statistics segment",
527 .short_help = "show statistics segment [verbose]",
528 .function = show_stat_segment_command_fn,
533 * Node performance counters:
534 * total_calls [threads][node-index]
541 update_node_counters (stat_segment_main_t * sm)
543 vlib_main_t **stat_vms = 0;
544 vlib_node_t ***node_dups = 0;
546 stat_segment_shared_header_t *shared_header = sm->shared_header;
547 static u32 no_max_nodes = 0;
549 vlib_node_get_nodes (0 /* vm, for barrier sync */ ,
550 (u32) ~ 0 /* all threads */ ,
551 1 /* include stats */ ,
552 0 /* barrier sync */ ,
553 &node_dups, &stat_vms);
555 u32 l = vec_len (node_dups[0]);
558 * Extend performance nodes if necessary
560 if (l > no_max_nodes)
562 void *oldheap = clib_mem_set_heap (sm->heap);
563 vlib_stat_segment_lock ();
565 stat_validate_counter_vector (&sm->directory_vector
566 [STAT_COUNTER_NODE_CLOCKS], l - 1);
567 stat_validate_counter_vector (&sm->directory_vector
568 [STAT_COUNTER_NODE_VECTORS], l - 1);
569 stat_validate_counter_vector (&sm->directory_vector
570 [STAT_COUNTER_NODE_CALLS], l - 1);
571 stat_validate_counter_vector (&sm->directory_vector
572 [STAT_COUNTER_NODE_SUSPENDS], l - 1);
574 vec_validate (sm->nodes, l - 1);
575 stat_segment_directory_entry_t *ep;
576 ep = &sm->directory_vector[STAT_COUNTER_NODE_NAMES];
577 ep->offset = stat_segment_offset (shared_header, sm->nodes);
581 ep->offset_vector ? stat_segment_pointer (shared_header,
582 ep->offset_vector) : 0;
583 /* Update names dictionary */
584 vec_validate (offset_vector, l - 1);
585 vlib_node_t **nodes = node_dups[0];
587 for (i = 0; i < vec_len (nodes); i++)
589 vlib_node_t *n = nodes[i];
591 s = format (s, "%v%c", n->name, 0);
592 if (sm->nodes[n->index])
593 vec_free (sm->nodes[n->index]);
594 sm->nodes[n->index] = s;
596 sm->nodes[i] ? stat_segment_offset (shared_header,
600 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
602 vlib_stat_segment_unlock ();
603 clib_mem_set_heap (oldheap);
607 for (j = 0; j < vec_len (node_dups); j++)
609 vlib_node_t **nodes = node_dups[j];
611 for (i = 0; i < vec_len (nodes); i++)
613 counter_t **counters;
615 vlib_node_t *n = nodes[i];
618 stat_segment_pointer (shared_header,
620 [STAT_COUNTER_NODE_CLOCKS].offset);
622 c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks;
625 stat_segment_pointer (shared_header,
627 [STAT_COUNTER_NODE_VECTORS].offset);
629 c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors;
632 stat_segment_pointer (shared_header,
634 [STAT_COUNTER_NODE_CALLS].offset);
636 c[n->index] = n->stats_total.calls - n->stats_last_clear.calls;
639 stat_segment_pointer (shared_header,
641 [STAT_COUNTER_NODE_SUSPENDS].offset);
644 n->stats_total.suspends - n->stats_last_clear.suspends;
646 vec_free (node_dups[j]);
648 vec_free (node_dups);
653 do_stat_segment_updates (stat_segment_main_t * sm)
655 vlib_main_t *vm = vlib_mains[0];
659 vlib_main_t *this_vlib_main;
661 static int num_worker_threads_set;
664 * Set once at the beginning of time.
665 * Can't do this from the init routine, which happens before
666 * start_workers sets up vlib_mains...
668 if (PREDICT_FALSE (num_worker_threads_set == 0))
670 void *oldheap = clib_mem_set_heap (sm->heap);
671 vlib_stat_segment_lock ();
673 stat_validate_counter_vector (&sm->directory_vector
674 [STAT_COUNTER_VECTOR_RATE_PER_WORKER], 0);
675 num_worker_threads_set = 1;
676 vlib_stat_segment_unlock ();
677 clib_mem_set_heap (oldheap);
681 * Compute per-worker vector rates, and the average vector rate
686 for (i = 0; i < vec_len (vlib_mains); i++)
689 f64 this_vector_rate;
691 this_vlib_main = vlib_mains[i];
693 this_vector_rate = vlib_internal_node_vector_rate (this_vlib_main);
694 vlib_clear_internal_node_vector_rate (this_vlib_main);
696 vector_rate += this_vector_rate;
698 /* Set the per-worker rate */
699 stat_set_simple_counter (&sm->directory_vector
700 [STAT_COUNTER_VECTOR_RATE_PER_WORKER], i, 0,
704 /* And set the system average rate */
705 vector_rate /= (f64) (i > 1 ? i - 1 : 1);
707 sm->directory_vector[STAT_COUNTER_VECTOR_RATE].value = vector_rate;
710 * Compute the aggregate input rate
712 now = vlib_time_now (vm);
713 dt = now - sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value;
714 input_packets = vnet_get_aggregate_rx_packets ();
715 sm->directory_vector[STAT_COUNTER_INPUT_RATE].value =
716 (f64) (input_packets - sm->last_input_packets) / dt;
717 sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value = now;
718 sm->last_input_packets = input_packets;
719 sm->directory_vector[STAT_COUNTER_LAST_STATS_CLEAR].value =
720 vm->node_main.time_last_runtime_stats_clear;
722 /* Stats segment memory heap counter */
723 clib_mem_usage_t usage;
724 mheap_usage (sm->heap, &usage);
725 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_USED].value =
728 if (sm->node_counters_enabled)
729 update_node_counters (sm);
732 stat_segment_gauges_pool_t *g;
733 pool_foreach(g, sm->gauges,
735 g->fn(&sm->directory_vector[g->directory_index], g->caller_index);
739 /* Heartbeat, so clients detect we're still here */
740 sm->directory_vector[STAT_COUNTER_HEARTBEAT].value++;
744 * Accept connection on the socket and exchange the fd for the shared
747 static clib_error_t *
748 stats_socket_accept_ready (clib_file_t * uf)
750 stat_segment_main_t *sm = &stat_segment_main;
752 clib_socket_t client = { 0 };
754 err = clib_socket_accept (sm->socket, &client);
757 clib_error_report (err);
761 /* Send the fd across and close */
762 err = clib_socket_sendmsg (&client, 0, 0, &sm->memfd, 1);
764 clib_error_report (err);
765 clib_socket_close (&client);
770 static clib_error_t *
771 stats_segment_socket_init (void)
773 stat_segment_main_t *sm = &stat_segment_main;
775 clib_socket_t *s = clib_mem_alloc (sizeof (clib_socket_t));
777 memset (s, 0, sizeof (clib_socket_t));
778 s->config = (char *) sm->socket_name;
779 s->flags = CLIB_SOCKET_F_IS_SERVER | CLIB_SOCKET_F_SEQPACKET |
780 CLIB_SOCKET_F_ALLOW_GROUP_WRITE | CLIB_SOCKET_F_PASSCRED;
782 if ((error = clib_socket_init (s)))
785 clib_file_t template = { 0 };
786 template.read_function = stats_socket_accept_ready;
787 template.file_descriptor = s->fd;
788 template.description = format (0, "stats segment listener %s", s->config);
789 clib_file_add (&file_main, &template);
796 static clib_error_t *
797 stats_segment_socket_exit (vlib_main_t * vm)
800 * cleanup the listener socket on exit.
802 stat_segment_main_t *sm = &stat_segment_main;
803 unlink ((char *) sm->socket_name);
807 VLIB_MAIN_LOOP_EXIT_FUNCTION (stats_segment_socket_exit);
809 /* Overrides weak reference in vlib:node_cli.c */
811 vlib_get_stat_segment_update_rate (void)
813 return stat_segment_main.update_interval;
817 stat_segment_collector_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
820 stat_segment_main_t *sm = &stat_segment_main;
824 do_stat_segment_updates (sm);
825 vlib_process_suspend (vm, sm->update_interval);
827 return 0; /* or not */
830 static clib_error_t *
831 statseg_init (vlib_main_t * vm)
833 stat_segment_main_t *sm = &stat_segment_main;
835 /* set default socket file name when statseg config stanza is empty. */
836 if (!vec_len (sm->socket_name))
837 sm->socket_name = format (0, "%s/%s%c", vlib_unix_get_runtime_dir (),
838 STAT_SEGMENT_SOCKET_FILENAME, 0);
839 return stats_segment_socket_init ();
843 VLIB_INIT_FUNCTION (statseg_init) =
845 .runs_after = VLIB_INITS("unix_input_init"),
850 stat_segment_register_gauge (u8 * name, stat_segment_update_fn update_fn,
853 stat_segment_main_t *sm = &stat_segment_main;
854 stat_segment_shared_header_t *shared_header = sm->shared_header;
856 stat_segment_directory_entry_t e;
857 stat_segment_gauges_pool_t *gauge;
859 ASSERT (shared_header);
861 u32 vector_index = lookup_hash_index (name);
863 if (vector_index != STAT_SEGMENT_INDEX_INVALID) /* Already registered */
864 return clib_error_return (0, "%v is already registered", name);
866 memset (&e, 0, sizeof (e));
867 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
868 memcpy (e.name, name, vec_len (name));
870 oldheap = vlib_stats_push_heap (NULL);
871 vlib_stat_segment_lock ();
872 vector_index = vlib_stats_create_counter (&e, oldheap);
874 shared_header->directory_offset =
875 stat_segment_offset (shared_header, sm->directory_vector);
877 vlib_stat_segment_unlock ();
878 clib_mem_set_heap (oldheap);
880 /* Back on our own heap */
881 pool_get (sm->gauges, gauge);
882 gauge->fn = update_fn;
883 gauge->caller_index = caller_index;
884 gauge->directory_index = vector_index;
890 stat_segment_register_state_counter (u8 * name, u32 * index)
892 stat_segment_main_t *sm = &stat_segment_main;
893 stat_segment_shared_header_t *shared_header = sm->shared_header;
895 stat_segment_directory_entry_t e;
897 ASSERT (shared_header);
898 ASSERT (vlib_get_thread_index () == 0);
900 u32 vector_index = lookup_hash_index (name);
902 if (vector_index != STAT_SEGMENT_INDEX_INVALID) /* Already registered */
903 return clib_error_return (0, "%v is already registered", name);
905 memset (&e, 0, sizeof (e));
906 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
907 memcpy (e.name, name, vec_len (name));
909 oldheap = vlib_stats_push_heap (NULL);
910 vlib_stat_segment_lock ();
912 vector_index = vlib_stats_create_counter (&e, oldheap);
914 shared_header->directory_offset =
915 stat_segment_offset (shared_header, sm->directory_vector);
917 vlib_stat_segment_unlock ();
918 clib_mem_set_heap (oldheap);
920 *index = vector_index;
925 stat_segment_deregister_state_counter (u32 index)
927 stat_segment_main_t *sm = &stat_segment_main;
928 stat_segment_shared_header_t *shared_header = sm->shared_header;
929 stat_segment_directory_entry_t *e;
932 ASSERT (shared_header);
934 if (index > vec_len (sm->directory_vector))
935 return clib_error_return (0, "%u index does not exist", index);
937 e = &sm->directory_vector[index];
938 if (e->type != STAT_DIR_TYPE_SCALAR_INDEX)
939 return clib_error_return (0, "%u index cannot be deleted", index);
941 oldheap = vlib_stats_push_heap (NULL);
942 vlib_stat_segment_lock ();
944 vlib_stats_delete_counter (index, oldheap);
946 vlib_stat_segment_unlock ();
947 clib_mem_set_heap (oldheap);
953 stat_segment_set_state_counter (u32 index, u64 value)
955 stat_segment_main_t *sm = &stat_segment_main;
957 ASSERT (index < vec_len (sm->directory_vector));
958 sm->directory_vector[index].index = value;
961 static clib_error_t *
962 statseg_config (vlib_main_t * vm, unformat_input_t * input)
964 stat_segment_main_t *sm = &stat_segment_main;
965 sm->update_interval = 10.0;
967 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
969 if (unformat (input, "socket-name %s", &sm->socket_name))
971 /* DEPRECATE: default (does nothing) */
972 else if (unformat (input, "default"))
974 else if (unformat (input, "size %U",
975 unformat_memory_size, &sm->memory_size))
977 else if (unformat (input, "per-node-counters on"))
978 sm->node_counters_enabled = 1;
979 else if (unformat (input, "per-node-counters off"))
980 sm->node_counters_enabled = 0;
981 else if (unformat (input, "update-interval %f", &sm->update_interval))
984 return clib_error_return (0, "unknown input `%U'",
985 format_unformat_error, input);
989 * NULL-terminate socket name string
990 * clib_socket_init()->socket_config() use C str*
992 if (vec_len (sm->socket_name))
993 vec_terminate_c_string (sm->socket_name);
998 VLIB_EARLY_CONFIG_FUNCTION (statseg_config, "statseg");
1000 static clib_error_t *
1001 statseg_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
1003 stat_segment_main_t *sm = &stat_segment_main;
1004 stat_segment_shared_header_t *shared_header = sm->shared_header;
1006 void *oldheap = vlib_stats_push_heap (sm->interfaces);
1007 vlib_stat_segment_lock ();
1009 vec_validate (sm->interfaces, sw_if_index);
1012 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
1013 vnet_sw_interface_t *si_sup =
1014 vnet_get_sup_sw_interface (vnm, si->sw_if_index);
1015 vnet_hw_interface_t *hi_sup;
1017 ASSERT (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1018 hi_sup = vnet_get_hw_interface (vnm, si_sup->hw_if_index);
1021 s = format (s, "%v", hi_sup->name);
1022 if (si->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
1023 s = format (s, ".%d", si->sub.id);
1024 s = format (s, "%c", 0);
1025 sm->interfaces[sw_if_index] = s;
1029 vec_free (sm->interfaces[sw_if_index]);
1030 sm->interfaces[sw_if_index] = 0;
1033 stat_segment_directory_entry_t *ep;
1034 ep = &sm->directory_vector[STAT_COUNTER_INTERFACE_NAMES];
1035 ep->offset = stat_segment_offset (shared_header, sm->interfaces);
1038 u64 *offset_vector =
1039 ep->offset_vector ? stat_segment_pointer (shared_header,
1040 ep->offset_vector) : 0;
1042 vec_validate (offset_vector, vec_len (sm->interfaces) - 1);
1044 if (sm->last != sm->interfaces)
1046 /* the interface vector moved, so need to recalulate the offset array */
1047 for (i = 0; i < vec_len (sm->interfaces); i++)
1050 sm->interfaces[i] ? stat_segment_offset (shared_header,
1051 sm->interfaces[i]) : 0;
1056 offset_vector[sw_if_index] =
1057 sm->interfaces[sw_if_index] ?
1058 stat_segment_offset (shared_header, sm->interfaces[sw_if_index]) : 0;
1060 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
1062 vlib_stat_segment_unlock ();
1063 clib_mem_set_heap (oldheap);
1068 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (statseg_sw_interface_add_del);
1071 VLIB_REGISTER_NODE (stat_segment_collector, static) =
1073 .function = stat_segment_collector_process,
1074 .name = "statseg-collector-process",
1075 .type = VLIB_NODE_TYPE_PROCESS,
1081 * fd.io coding-style-patch-verification: ON
1084 * eval: (c-set-style "gnu")