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 stat_set_simple_counter (stat_segment_directory_entry_t * ep,
221 u32 thread_index, u32 index, u64 value)
223 stat_segment_main_t *sm = &stat_segment_main;
224 stat_segment_shared_header_t *shared_header = sm->shared_header;
226 ASSERT (shared_header);
227 counter_t *offset_vector =
228 stat_segment_pointer (sm->shared_header, ep->offset_vector);
230 stat_segment_pointer (sm->shared_header, offset_vector[thread_index]);
235 vlib_stats_pop_heap2 (u64 * error_vector, u32 thread_index, void *oldheap,
238 stat_segment_main_t *sm = &stat_segment_main;
239 stat_segment_shared_header_t *shared_header = sm->shared_header;
241 ASSERT (shared_header);
244 vlib_stat_segment_lock ();
246 /* Reset the client hash table pointer, since it WILL change! */
247 vec_validate (sm->error_vector, thread_index);
248 sm->error_vector[thread_index] =
249 stat_segment_offset (shared_header, error_vector);
251 shared_header->error_offset =
252 stat_segment_offset (shared_header, sm->error_vector);
253 shared_header->directory_offset =
254 stat_segment_offset (shared_header, sm->directory_vector);
257 vlib_stat_segment_unlock ();
258 clib_mem_set_heap (oldheap);
262 vlib_map_stat_segment_init (void)
264 stat_segment_main_t *sm = &stat_segment_main;
265 stat_segment_shared_header_t *shared_header;
269 char *mem_name = "stat_segment_test";
272 memory_size = sm->memory_size;
273 if (memory_size == 0)
274 memory_size = STAT_SEGMENT_DEFAULT_SIZE;
276 /* Create shared memory segment */
277 if ((mfd = memfd_create (mem_name, 0)) < 0)
278 return clib_error_return (0, "stat segment memfd_create failure");
281 if ((ftruncate (mfd, memory_size)) == -1)
282 return clib_error_return (0, "stat segment ftruncate failure");
285 mmap (NULL, memory_size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd,
287 return clib_error_return (0, "stat segment mmap failure");
290 #if USE_DLMALLOC == 0
291 heap = mheap_alloc_with_flags (((u8 *) memaddr) + getpagesize (),
292 memory_size - getpagesize (),
293 MHEAP_FLAG_DISABLE_VM |
294 MHEAP_FLAG_THREAD_SAFE);
297 create_mspace_with_base (((u8 *) memaddr) + getpagesize (),
298 memory_size - getpagesize (), 1 /* locked */ );
299 mspace_disable_expand (heap);
305 sm->directory_vector_by_name = hash_create_string (0, sizeof (uword));
306 sm->shared_header = shared_header = memaddr;
308 shared_header->version = STAT_SEGMENT_VERSION;
310 sm->stat_segment_lockp = clib_mem_alloc (sizeof (clib_spinlock_t));
311 clib_spinlock_init (sm->stat_segment_lockp);
313 oldheap = clib_mem_set_heap (sm->heap);
315 /* Set up the name to counter-vector hash table */
316 sm->directory_vector = 0;
318 shared_header->epoch = 1;
320 /* Scalar stats and node counters */
321 vec_validate (sm->directory_vector, STAT_COUNTERS - 1);
323 strcpy(sm->directory_vector[STAT_COUNTER_##E].name, #p "/" #n); \
324 sm->directory_vector[STAT_COUNTER_##E].type = STAT_DIR_TYPE_##t;
325 foreach_stat_segment_counter_name
327 /* Save the vector offset in the shared segment, for clients */
328 shared_header->directory_offset =
329 stat_segment_offset (shared_header, sm->directory_vector);
331 clib_mem_set_heap (oldheap);
333 /* Total shared memory size */
334 clib_mem_usage_t usage;
335 mheap_usage (sm->heap, &usage);
336 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_TOTAL].value =
343 name_sort_cmp (void *a1, void *a2)
345 stat_segment_directory_entry_t *n1 = a1;
346 stat_segment_directory_entry_t *n2 = a2;
348 return strcmp ((char *) n1->name, (char *) n2->name);
352 format_stat_dir_entry (u8 * s, va_list * args)
354 stat_segment_directory_entry_t *ep =
355 va_arg (*args, stat_segment_directory_entry_t *);
359 format_string = "%-74s %-10s %10lld";
363 case STAT_DIR_TYPE_SCALAR_INDEX:
364 type_name = "ScalarPtr";
367 case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE:
368 case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED:
369 type_name = "CMainPtr";
372 case STAT_DIR_TYPE_ERROR_INDEX:
373 type_name = "ErrIndex";
376 case STAT_DIR_TYPE_NAME_VECTOR:
377 type_name = "NameVector";
381 type_name = "illegal!";
385 return format (s, format_string, ep->name, type_name, ep->offset);
388 static clib_error_t *
389 show_stat_segment_command_fn (vlib_main_t * vm,
390 unformat_input_t * input,
391 vlib_cli_command_t * cmd)
393 stat_segment_main_t *sm = &stat_segment_main;
394 stat_segment_directory_entry_t *show_data;
399 if (unformat (input, "verbose"))
402 /* Lock even as reader, as this command doesn't handle epoch changes */
403 vlib_stat_segment_lock ();
404 show_data = vec_dup (sm->directory_vector);
405 vlib_stat_segment_unlock ();
407 vec_sort_with_function (show_data, name_sort_cmp);
409 vlib_cli_output (vm, "%-74s %10s %10s", "Name", "Type", "Value");
411 for (i = 0; i < vec_len (show_data); i++)
413 vlib_cli_output (vm, "%-100U", format_stat_dir_entry,
414 vec_elt_at_index (show_data, i));
420 vlib_cli_output (vm, "%U", format_mheap, sm->heap, 0 /* verbose */ );
427 VLIB_CLI_COMMAND (show_stat_segment_command, static) =
429 .path = "show statistics segment",
430 .short_help = "show statistics segment [verbose]",
431 .function = show_stat_segment_command_fn,
436 * Node performance counters:
437 * total_calls [threads][node-index]
444 update_node_counters (stat_segment_main_t * sm)
446 vlib_main_t **stat_vms = 0;
447 vlib_node_t ***node_dups = 0;
449 stat_segment_shared_header_t *shared_header = sm->shared_header;
450 static u32 no_max_nodes = 0;
452 vlib_node_get_nodes (0 /* vm, for barrier sync */ ,
453 (u32) ~ 0 /* all threads */ ,
454 1 /* include stats */ ,
455 0 /* barrier sync */ ,
456 &node_dups, &stat_vms);
458 u32 l = vec_len (node_dups[0]);
461 * Extend performance nodes if necessary
463 if (l > no_max_nodes)
465 void *oldheap = clib_mem_set_heap (sm->heap);
466 vlib_stat_segment_lock ();
468 stat_validate_counter_vector (&sm->directory_vector
469 [STAT_COUNTER_NODE_CLOCKS], l - 1);
470 stat_validate_counter_vector (&sm->directory_vector
471 [STAT_COUNTER_NODE_VECTORS], l - 1);
472 stat_validate_counter_vector (&sm->directory_vector
473 [STAT_COUNTER_NODE_CALLS], l - 1);
474 stat_validate_counter_vector (&sm->directory_vector
475 [STAT_COUNTER_NODE_SUSPENDS], l - 1);
477 vec_validate (sm->nodes, l - 1);
478 stat_segment_directory_entry_t *ep;
479 ep = &sm->directory_vector[STAT_COUNTER_NODE_NAMES];
480 ep->offset = stat_segment_offset (shared_header, sm->nodes);
484 ep->offset_vector ? stat_segment_pointer (shared_header,
485 ep->offset_vector) : 0;
486 /* Update names dictionary */
487 vec_validate (offset_vector, l - 1);
488 vlib_node_t **nodes = node_dups[0];
490 for (i = 0; i < vec_len (nodes); i++)
492 vlib_node_t *n = nodes[i];
494 s = format (s, "%v%c", n->name, 0);
495 if (sm->nodes[n->index])
496 vec_free (sm->nodes[n->index]);
497 sm->nodes[n->index] = s;
499 sm->nodes[i] ? stat_segment_offset (shared_header,
503 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
505 vlib_stat_segment_unlock ();
506 clib_mem_set_heap (oldheap);
510 for (j = 0; j < vec_len (node_dups); j++)
512 vlib_node_t **nodes = node_dups[j];
514 for (i = 0; i < vec_len (nodes); i++)
516 counter_t **counters;
518 vlib_node_t *n = nodes[i];
521 stat_segment_pointer (shared_header,
523 [STAT_COUNTER_NODE_CLOCKS].offset);
525 c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks;
528 stat_segment_pointer (shared_header,
530 [STAT_COUNTER_NODE_VECTORS].offset);
532 c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors;
535 stat_segment_pointer (shared_header,
537 [STAT_COUNTER_NODE_CALLS].offset);
539 c[n->index] = n->stats_total.calls - n->stats_last_clear.calls;
542 stat_segment_pointer (shared_header,
544 [STAT_COUNTER_NODE_SUSPENDS].offset);
547 n->stats_total.suspends - n->stats_last_clear.suspends;
549 vec_free (node_dups[j]);
551 vec_free (node_dups);
556 do_stat_segment_updates (stat_segment_main_t * sm)
558 vlib_main_t *vm = vlib_mains[0];
562 vlib_main_t *this_vlib_main;
564 static int num_worker_threads_set;
567 * Set once at the beginning of time.
568 * Can't do this from the init routine, which happens before
569 * start_workers sets up vlib_mains...
571 if (PREDICT_FALSE (num_worker_threads_set == 0))
573 void *oldheap = clib_mem_set_heap (sm->heap);
574 vlib_stat_segment_lock ();
576 stat_validate_counter_vector (&sm->directory_vector
577 [STAT_COUNTER_VECTOR_RATE_PER_WORKER], 0);
578 num_worker_threads_set = 1;
579 vlib_stat_segment_unlock ();
580 clib_mem_set_heap (oldheap);
584 * Compute per-worker vector rates, and the average vector rate
589 for (i = 0; i < vec_len (vlib_mains); i++)
592 f64 this_vector_rate;
594 this_vlib_main = vlib_mains[i];
596 this_vector_rate = vlib_internal_node_vector_rate (this_vlib_main);
597 vlib_clear_internal_node_vector_rate (this_vlib_main);
599 vector_rate += this_vector_rate;
601 /* Set the per-worker rate */
602 stat_set_simple_counter (&sm->directory_vector
603 [STAT_COUNTER_VECTOR_RATE_PER_WORKER], i, 0,
607 /* And set the system average rate */
608 vector_rate /= (f64) (i > 1 ? i - 1 : 1);
610 sm->directory_vector[STAT_COUNTER_VECTOR_RATE].value = vector_rate;
613 * Compute the aggregate input rate
615 now = vlib_time_now (vm);
616 dt = now - sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value;
617 input_packets = vnet_get_aggregate_rx_packets ();
618 sm->directory_vector[STAT_COUNTER_INPUT_RATE].value =
619 (f64) (input_packets - sm->last_input_packets) / dt;
620 sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value = now;
621 sm->last_input_packets = input_packets;
622 sm->directory_vector[STAT_COUNTER_LAST_STATS_CLEAR].value =
623 vm->node_main.time_last_runtime_stats_clear;
625 /* Stats segment memory heap counter */
626 clib_mem_usage_t usage;
627 mheap_usage (sm->heap, &usage);
628 sm->directory_vector[STAT_COUNTER_MEM_STATSEG_USED].value =
631 if (sm->node_counters_enabled)
632 update_node_counters (sm);
635 stat_segment_gauges_pool_t *g;
636 pool_foreach(g, sm->gauges,
638 g->fn(&sm->directory_vector[g->directory_index], g->caller_index);
642 /* Heartbeat, so clients detect we're still here */
643 sm->directory_vector[STAT_COUNTER_HEARTBEAT].value++;
647 * Accept connection on the socket and exchange the fd for the shared
650 static clib_error_t *
651 stats_socket_accept_ready (clib_file_t * uf)
653 stat_segment_main_t *sm = &stat_segment_main;
655 clib_socket_t client = { 0 };
657 err = clib_socket_accept (sm->socket, &client);
660 clib_error_report (err);
664 /* Send the fd across and close */
665 err = clib_socket_sendmsg (&client, 0, 0, &sm->memfd, 1);
667 clib_error_report (err);
668 clib_socket_close (&client);
673 static clib_error_t *
674 stats_segment_socket_init (void)
676 stat_segment_main_t *sm = &stat_segment_main;
678 clib_socket_t *s = clib_mem_alloc (sizeof (clib_socket_t));
680 memset (s, 0, sizeof (clib_socket_t));
681 s->config = (char *) sm->socket_name;
682 s->flags = CLIB_SOCKET_F_IS_SERVER | CLIB_SOCKET_F_SEQPACKET |
683 CLIB_SOCKET_F_ALLOW_GROUP_WRITE | CLIB_SOCKET_F_PASSCRED;
685 if ((error = clib_socket_init (s)))
688 clib_file_t template = { 0 };
689 template.read_function = stats_socket_accept_ready;
690 template.file_descriptor = s->fd;
691 template.description = format (0, "stats segment listener %s", s->config);
692 clib_file_add (&file_main, &template);
699 static clib_error_t *
700 stats_segment_socket_exit (vlib_main_t * vm)
703 * cleanup the listener socket on exit.
705 stat_segment_main_t *sm = &stat_segment_main;
706 unlink ((char *) sm->socket_name);
710 VLIB_MAIN_LOOP_EXIT_FUNCTION (stats_segment_socket_exit);
712 /* Overrides weak reference in vlib:node_cli.c */
714 vlib_get_stat_segment_update_rate (void)
716 return stat_segment_main.update_interval;
720 stat_segment_collector_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
723 stat_segment_main_t *sm = &stat_segment_main;
727 do_stat_segment_updates (sm);
728 vlib_process_suspend (vm, sm->update_interval);
730 return 0; /* or not */
733 static clib_error_t *
734 statseg_init (vlib_main_t * vm)
736 stat_segment_main_t *sm = &stat_segment_main;
738 /* set default socket file name when statseg config stanza is empty. */
739 if (!vec_len (sm->socket_name))
740 sm->socket_name = format (0, "%s/%s%c", vlib_unix_get_runtime_dir (),
741 STAT_SEGMENT_SOCKET_FILENAME, 0);
742 return stats_segment_socket_init ();
746 VLIB_INIT_FUNCTION (statseg_init) =
748 .runs_after = VLIB_INITS("unix_input_init"),
753 stat_segment_register_gauge (u8 * name, stat_segment_update_fn update_fn,
756 stat_segment_main_t *sm = &stat_segment_main;
757 stat_segment_shared_header_t *shared_header = sm->shared_header;
759 stat_segment_directory_entry_t e;
760 stat_segment_gauges_pool_t *gauge;
762 ASSERT (shared_header);
764 u32 next_vector_index = vec_len (sm->directory_vector);
765 u32 vector_index = lookup_or_create_hash_index (name,
768 if (vector_index < next_vector_index) /* Already registered */
769 return clib_error_return (0, "%v is alreadty registered", name);
771 oldheap = vlib_stats_push_heap (NULL);
772 vlib_stat_segment_lock ();
774 memset (&e, 0, sizeof (e));
775 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
777 memcpy (e.name, name, vec_len (name));
778 vec_add1 (sm->directory_vector, e);
780 shared_header->directory_offset =
781 stat_segment_offset (shared_header, sm->directory_vector);
783 vlib_stat_segment_unlock ();
784 clib_mem_set_heap (oldheap);
786 /* Back on our own heap */
787 pool_get (sm->gauges, gauge);
788 gauge->fn = update_fn;
789 gauge->caller_index = caller_index;
790 gauge->directory_index = next_vector_index;
796 stat_segment_register_state_counter (u8 * name, u32 * index)
798 stat_segment_main_t *sm = &stat_segment_main;
799 stat_segment_shared_header_t *shared_header = sm->shared_header;
801 stat_segment_directory_entry_t e;
803 ASSERT (shared_header);
804 ASSERT (vlib_get_thread_index () == 0);
806 u32 next_vector_index = vec_len (sm->directory_vector);
807 u32 vector_index = lookup_or_create_hash_index (name,
810 if (vector_index < next_vector_index) /* Already registered */
811 return clib_error_return (0, "%v is already registered", name);
813 oldheap = vlib_stats_push_heap (NULL);
814 vlib_stat_segment_lock ();
816 memset (&e, 0, sizeof (e));
817 e.type = STAT_DIR_TYPE_SCALAR_INDEX;
819 memcpy (e.name, name, vec_len (name));
820 vec_add1 (sm->directory_vector, e);
822 shared_header->directory_offset =
823 stat_segment_offset (shared_header, sm->directory_vector);
825 vlib_stat_segment_unlock ();
826 clib_mem_set_heap (oldheap);
828 *index = next_vector_index;
833 stat_segment_deregister_state_counter (u32 index)
835 stat_segment_main_t *sm = &stat_segment_main;
836 stat_segment_shared_header_t *shared_header = sm->shared_header;
837 stat_segment_directory_entry_t *e;
839 ASSERT (shared_header);
841 if (index > vec_len (sm->directory_vector))
842 return clib_error_return (0, "%u index does not exist", index);
844 e = &sm->directory_vector[index];
845 if (e->type != STAT_DIR_TYPE_SCALAR_INDEX)
846 return clib_error_return (0, "%u index cannot be deleted", index);
848 hash_unset (sm->directory_vector_by_name, &e->name);
849 vec_del1 (sm->directory_vector, index);
854 stat_segment_set_state_counter (u32 index, u64 value)
856 stat_segment_main_t *sm = &stat_segment_main;
858 ASSERT (index < vec_len (sm->directory_vector));
859 sm->directory_vector[index].index = value;
862 static clib_error_t *
863 statseg_config (vlib_main_t * vm, unformat_input_t * input)
865 stat_segment_main_t *sm = &stat_segment_main;
866 sm->update_interval = 10.0;
868 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
870 if (unformat (input, "socket-name %s", &sm->socket_name))
872 /* DEPRECATE: default (does nothing) */
873 else if (unformat (input, "default"))
875 else if (unformat (input, "size %U",
876 unformat_memory_size, &sm->memory_size))
878 else if (unformat (input, "per-node-counters on"))
879 sm->node_counters_enabled = 1;
880 else if (unformat (input, "per-node-counters off"))
881 sm->node_counters_enabled = 0;
882 else if (unformat (input, "update-interval %f", &sm->update_interval))
885 return clib_error_return (0, "unknown input `%U'",
886 format_unformat_error, input);
890 * NULL-terminate socket name string
891 * clib_socket_init()->socket_config() use C str*
893 if (vec_len (sm->socket_name))
894 vec_terminate_c_string (sm->socket_name);
899 VLIB_EARLY_CONFIG_FUNCTION (statseg_config, "statseg");
901 static clib_error_t *
902 statseg_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
904 stat_segment_main_t *sm = &stat_segment_main;
905 stat_segment_shared_header_t *shared_header = sm->shared_header;
907 void *oldheap = vlib_stats_push_heap (sm->interfaces);
908 vlib_stat_segment_lock ();
910 vec_validate (sm->interfaces, sw_if_index);
913 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
914 vnet_sw_interface_t *si_sup =
915 vnet_get_sup_sw_interface (vnm, si->sw_if_index);
916 vnet_hw_interface_t *hi_sup;
918 ASSERT (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
919 hi_sup = vnet_get_hw_interface (vnm, si_sup->hw_if_index);
922 s = format (s, "%v", hi_sup->name);
923 if (si->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
924 s = format (s, ".%d", si->sub.id);
925 s = format (s, "%c", 0);
926 sm->interfaces[sw_if_index] = s;
930 vec_free (sm->interfaces[sw_if_index]);
931 sm->interfaces[sw_if_index] = 0;
934 stat_segment_directory_entry_t *ep;
935 ep = &sm->directory_vector[STAT_COUNTER_INTERFACE_NAMES];
936 ep->offset = stat_segment_offset (shared_header, sm->interfaces);
940 ep->offset_vector ? stat_segment_pointer (shared_header,
941 ep->offset_vector) : 0;
943 vec_validate (offset_vector, vec_len (sm->interfaces) - 1);
945 if (sm->last != sm->interfaces)
947 /* the interface vector moved, so need to recalulate the offset array */
948 for (i = 0; i < vec_len (sm->interfaces); i++)
951 sm->interfaces[i] ? stat_segment_offset (shared_header,
952 sm->interfaces[i]) : 0;
957 offset_vector[sw_if_index] =
958 sm->interfaces[sw_if_index] ?
959 stat_segment_offset (shared_header, sm->interfaces[sw_if_index]) : 0;
961 ep->offset_vector = stat_segment_offset (shared_header, offset_vector);
963 vlib_stat_segment_unlock ();
964 clib_mem_set_heap (oldheap);
969 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (statseg_sw_interface_add_del);
972 VLIB_REGISTER_NODE (stat_segment_collector, static) =
974 .function = stat_segment_collector_process,
975 .name = "statseg-collector-process",
976 .type = VLIB_NODE_TYPE_PROCESS,
982 * fd.io coding-style-patch-verification: ON
985 * eval: (c-set-style "gnu")