FD.io VPP  v18.01-8-g0eacf49
Vector Packet Processing
threads.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2015 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:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
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.
14  */
15 #define _GNU_SOURCE
16 
17 #include <signal.h>
18 #include <math.h>
19 #include <vppinfra/format.h>
20 #include <vlib/vlib.h>
21 
22 #include <vlib/threads.h>
23 #include <vlib/unix/cj.h>
24 
26 
27 #define FRAME_QUEUE_NELTS 32
28 
29 u32
30 vl (void *p)
31 {
32  return vec_len (p);
33 }
34 
37 
38 /*
39  * Barrier tracing can be enabled on a normal build to collect information
40  * on barrier use, including timings and call stacks. Deliberately not
41  * keyed off CLIB_DEBUG, because that can add significant overhead which
42  * imapacts observed timings.
43  */
44 
45 #ifdef BARRIER_TRACING
46  /*
47  * Output of barrier tracing can be to syslog or elog as suits
48  */
49 #ifdef BARRIER_TRACING_ELOG
50 static u32
51 elog_id_for_msg_name (const char *msg_name)
52 {
53  uword *p, r;
54  static uword *h;
55  u8 *name_copy;
56 
57  if (!h)
58  h = hash_create_string (0, sizeof (uword));
59 
60  p = hash_get_mem (h, msg_name);
61  if (p)
62  return p[0];
63  r = elog_string (&vlib_global_main.elog_main, "%s", msg_name);
64 
65  name_copy = format (0, "%s%c", msg_name, 0);
66 
67  hash_set_mem (h, name_copy, r);
68 
69  return r;
70 }
71 
72  /*
73  * elog Barrier trace functions, which are nulled out if BARRIER_TRACING isn't
74  * defined
75  */
76 
77 static inline void
78 barrier_trace_sync (f64 t_entry, f64 t_open, f64 t_closed)
79 {
80  /* *INDENT-OFF* */
81  ELOG_TYPE_DECLARE (e) =
82  {
83  .format = "barrier <%d#%s(O:%dus:%dus)(%dus)",
84  .format_args = "i4T4i4i4i4",
85  };
86  /* *INDENT-ON* */
87  struct
88  {
89  u32 count, caller, t_entry, t_open, t_closed;
90  } *ed = 0;
91 
93  ed->count = (int) vlib_worker_threads[0].barrier_sync_count;
94  ed->caller = elog_id_for_msg_name (vlib_worker_threads[0].barrier_caller);
95  ed->t_entry = (int) (1000000.0 * t_entry);
96  ed->t_open = (int) (1000000.0 * t_open);
97  ed->t_closed = (int) (1000000.0 * t_closed);
98 }
99 
100 static inline void
101 barrier_trace_sync_rec (f64 t_entry)
102 {
103  /* *INDENT-OFF* */
104  ELOG_TYPE_DECLARE (e) =
105  {
106  .format = "barrier <%d(%dus)%s",
107  .format_args = "i4i4T4",
108  };
109  /* *INDENT-ON* */
110  struct
111  {
112  u32 depth, t_entry, caller;
113  } *ed = 0;
114 
116  ed->depth = (int) vlib_worker_threads[0].recursion_level - 1;
117  ed->t_entry = (int) (1000000.0 * t_entry);
118  ed->caller = elog_id_for_msg_name (vlib_worker_threads[0].barrier_caller);
119 }
120 
121 static inline void
123 {
124  /* *INDENT-OFF* */
125  ELOG_TYPE_DECLARE (e) =
126  {
127  .format = "barrier (%dus)%d>",
128  .format_args = "i4i4",
129  };
130  /* *INDENT-ON* */
131  struct
132  {
133  u32 t_entry, depth;
134  } *ed = 0;
135 
137  ed->t_entry = (int) (1000000.0 * t_entry);
138  ed->depth = (int) vlib_worker_threads[0].recursion_level;
139 }
140 
141 static inline void
142 barrier_trace_release (f64 t_entry, f64 t_closed_total, f64 t_update_main)
143 {
144  /* *INDENT-OFF* */
145  ELOG_TYPE_DECLARE (e) =
146  {
147  .format = "barrier (%dus){%d}(C:%dus)#%d>",
148  .format_args = "i4i4i4i4",
149  };
150  /* *INDENT-ON* */
151  struct
152  {
153  u32 t_entry, t_update_main, t_closed_total, count;
154  } *ed = 0;
155 
157  ed->t_entry = (int) (1000000.0 * t_entry);
158  ed->t_update_main = (int) (1000000.0 * t_update_main);
159  ed->t_closed_total = (int) (1000000.0 * t_closed_total);
160  ed->count = (int) vlib_worker_threads[0].barrier_sync_count;
161 
162  /* Reset context for next trace */
163  vlib_worker_threads[0].barrier_context = NULL;
164 }
165 #else
166 char barrier_trace[65536];
167 char *btp = barrier_trace;
168 
169  /*
170  * syslog Barrier trace functions, which are nulled out if BARRIER_TRACING
171  * isn't defined
172  */
173 
174 
175 static inline void
176 barrier_trace_sync (f64 t_entry, f64 t_open, f64 t_closed)
177 {
178  btp += sprintf (btp, "<%u#%s",
179  (unsigned int) vlib_worker_threads[0].barrier_sync_count,
180  vlib_worker_threads[0].barrier_caller);
181 
182  if (vlib_worker_threads[0].barrier_context)
183  {
184  btp += sprintf (btp, "[%s]", vlib_worker_threads[0].barrier_context);
185 
186  }
187 
188  btp += sprintf (btp, "(O:%dus:%dus)(%dus):",
189  (int) (1000000.0 * t_entry),
190  (int) (1000000.0 * t_open), (int) (1000000.0 * t_closed));
191 
192 }
193 
194 static inline void
195 barrier_trace_sync_rec (f64 t_entry)
196 {
197  btp += sprintf (btp, "<%u(%dus)%s:",
198  (int) vlib_worker_threads[0].recursion_level - 1,
199  (int) (1000000.0 * t_entry),
200  vlib_worker_threads[0].barrier_caller);
201 }
202 
203 static inline void
205 {
206  btp += sprintf (btp, ":(%dus)%u>", (int) (1000000.0 * t_entry),
207  (int) vlib_worker_threads[0].recursion_level);
208 }
209 
210 static inline void
211 barrier_trace_release (f64 t_entry, f64 t_closed_total, f64 t_update_main)
212 {
213 
214  btp += sprintf (btp, ":(%dus)", (int) (1000000.0 * t_entry));
215  if (t_update_main > 0)
216  {
217  btp += sprintf (btp, "{%dus}", (int) (1000000.0 * t_update_main));
218  }
219 
220  btp += sprintf (btp, "(C:%dus)#%u>",
221  (int) (1000000.0 * t_closed_total),
222  (int) vlib_worker_threads[0].barrier_sync_count);
223 
224  /* Dump buffer to syslog, and reset for next trace */
225  fformat (stderr, "BTRC %s\n", barrier_trace);
226  btp = barrier_trace;
227  vlib_worker_threads[0].barrier_context = NULL;
228 }
229 #endif
230 #else
231 
232  /* Null functions for default case where barrier tracing isn't used */
233 static inline void
234 barrier_trace_sync (f64 t_entry, f64 t_open, f64 t_closed)
235 {
236 }
237 
238 static inline void
240 {
241 }
242 
243 static inline void
245 {
246 }
247 
248 static inline void
249 barrier_trace_release (f64 t_entry, f64 t_closed_total, f64 t_update_main)
250 {
251 }
252 #endif
253 
254 uword
256 {
257  u32 len;
258 
259  len = vec_len (vlib_thread_stacks);
260  if (len == 0)
261  return 1;
262  else
263  return len;
264 }
265 
266 void
268 {
269  int pthread_setname_np (pthread_t __target_thread, const char *__name);
270  int rv;
271  pthread_t thread = pthread_self ();
272 
273  if (thread)
274  {
275  rv = pthread_setname_np (thread, name);
276  if (rv)
277  clib_warning ("pthread_setname_np returned %d", rv);
278  }
279 }
280 
281 static int
282 sort_registrations_by_no_clone (void *a0, void *a1)
283 {
284  vlib_thread_registration_t **tr0 = a0;
285  vlib_thread_registration_t **tr1 = a1;
286 
287  return ((i32) ((*tr0)->no_data_structure_clone)
288  - ((i32) ((*tr1)->no_data_structure_clone)));
289 }
290 
291 static uword *
293 {
294  FILE *fp;
295  uword *r = 0;
296 
297  fp = fopen (filename, "r");
298 
299  if (fp != NULL)
300  {
301  u8 *buffer = 0;
302  vec_validate (buffer, 256 - 1);
303  if (fgets ((char *) buffer, 256, fp))
304  {
305  unformat_input_t in;
306  unformat_init_string (&in, (char *) buffer,
307  strlen ((char *) buffer));
308  if (unformat (&in, "%U", unformat_bitmap_list, &r) != 1)
309  clib_warning ("unformat_bitmap_list failed");
310  unformat_free (&in);
311  }
312  vec_free (buffer);
313  fclose (fp);
314  }
315  return r;
316 }
317 
318 
319 /* Called early in the init sequence */
320 
321 clib_error_t *
323 {
327  u32 n_vlib_mains = 1;
328  u32 first_index = 1;
329  u32 i;
330  uword *avail_cpu;
331 
332  /* get bitmaps of active cpu cores and sockets */
333  tm->cpu_core_bitmap =
334  clib_sysfs_list_to_bitmap ("/sys/devices/system/cpu/online");
335  tm->cpu_socket_bitmap =
336  clib_sysfs_list_to_bitmap ("/sys/devices/system/node/online");
337 
338  avail_cpu = clib_bitmap_dup (tm->cpu_core_bitmap);
339 
340  /* skip cores */
341  for (i = 0; i < tm->skip_cores; i++)
342  {
343  uword c = clib_bitmap_first_set (avail_cpu);
344  if (c == ~0)
345  return clib_error_return (0, "no available cpus to skip");
346 
347  avail_cpu = clib_bitmap_set (avail_cpu, c, 0);
348  }
349 
350  /* grab cpu for main thread */
351  if (!tm->main_lcore)
352  {
353  tm->main_lcore = clib_bitmap_first_set (avail_cpu);
354  if (tm->main_lcore == (u8) ~ 0)
355  return clib_error_return (0, "no available cpus to be used for the"
356  " main thread");
357  }
358  else
359  {
360  if (clib_bitmap_get (avail_cpu, tm->main_lcore) == 0)
361  return clib_error_return (0, "cpu %u is not available to be used"
362  " for the main thread", tm->main_lcore);
363  }
364  avail_cpu = clib_bitmap_set (avail_cpu, tm->main_lcore, 0);
365 
366  /* assume that there is socket 0 only if there is no data from sysfs */
367  if (!tm->cpu_socket_bitmap)
368  tm->cpu_socket_bitmap = clib_bitmap_set (0, 0, 1);
369 
370  /* pin main thread to main_lcore */
372  {
374  }
375  else
376  {
377  cpu_set_t cpuset;
378  CPU_ZERO (&cpuset);
379  CPU_SET (tm->main_lcore, &cpuset);
380  pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
381  }
382 
383  /* as many threads as stacks... */
384  vec_validate_aligned (vlib_worker_threads, vec_len (vlib_thread_stacks) - 1,
386 
387  /* Preallocate thread 0 */
388  _vec_len (vlib_worker_threads) = 1;
392  w->lcore_id = tm->main_lcore;
393  w->lwp = syscall (SYS_gettid);
394  w->thread_id = pthread_self ();
395  tm->n_vlib_mains = 1;
396 
397  if (tm->sched_policy != ~0)
398  {
399  struct sched_param sched_param;
400  if (!sched_getparam (w->lwp, &sched_param))
401  {
402  if (tm->sched_priority != ~0)
403  sched_param.sched_priority = tm->sched_priority;
404  sched_setscheduler (w->lwp, tm->sched_policy, &sched_param);
405  }
406  }
407 
408  /* assign threads to cores and set n_vlib_mains */
409  tr = tm->next;
410 
411  while (tr)
412  {
413  vec_add1 (tm->registrations, tr);
414  tr = tr->next;
415  }
416 
418 
419  for (i = 0; i < vec_len (tm->registrations); i++)
420  {
421  int j;
422  tr = tm->registrations[i];
423  tr->first_index = first_index;
424  first_index += tr->count;
425  n_vlib_mains += (tr->no_data_structure_clone == 0) ? tr->count : 0;
426 
427  /* construct coremask */
428  if (tr->use_pthreads || !tr->count)
429  continue;
430 
431  if (tr->coremask)
432  {
433  uword c;
434  /* *INDENT-OFF* */
435  clib_bitmap_foreach (c, tr->coremask, ({
436  if (clib_bitmap_get(avail_cpu, c) == 0)
437  return clib_error_return (0, "cpu %u is not available to be used"
438  " for the '%s' thread",c, tr->name);
439 
440  avail_cpu = clib_bitmap_set(avail_cpu, c, 0);
441  }));
442 /* *INDENT-ON* */
443 
444  }
445  else
446  {
447  for (j = 0; j < tr->count; j++)
448  {
449  uword c = clib_bitmap_first_set (avail_cpu);
450  if (c == ~0)
451  return clib_error_return (0,
452  "no available cpus to be used for"
453  " the '%s' thread", tr->name);
454 
455  avail_cpu = clib_bitmap_set (avail_cpu, c, 0);
456  tr->coremask = clib_bitmap_set (tr->coremask, c, 1);
457  }
458  }
459  }
460 
461  clib_bitmap_free (avail_cpu);
462 
463  tm->n_vlib_mains = n_vlib_mains;
464 
465  vec_validate_aligned (vlib_worker_threads, first_index - 1,
467 
468  return 0;
469 }
470 
473 {
474  vlib_frame_queue_t *fq;
475 
476  fq = clib_mem_alloc_aligned (sizeof (*fq), CLIB_CACHE_LINE_BYTES);
477  memset (fq, 0, sizeof (*fq));
478  fq->nelts = nelts;
479  fq->vector_threshold = 128; // packets
481 
482  if (1)
483  {
484  if (((uword) & fq->tail) & (CLIB_CACHE_LINE_BYTES - 1))
485  fformat (stderr, "WARNING: fq->tail unaligned\n");
486  if (((uword) & fq->head) & (CLIB_CACHE_LINE_BYTES - 1))
487  fformat (stderr, "WARNING: fq->head unaligned\n");
488  if (((uword) fq->elts) & (CLIB_CACHE_LINE_BYTES - 1))
489  fformat (stderr, "WARNING: fq->elts unaligned\n");
490 
491  if (sizeof (fq->elts[0]) % CLIB_CACHE_LINE_BYTES)
492  fformat (stderr, "WARNING: fq->elts[0] size %d\n",
493  sizeof (fq->elts[0]));
494  if (nelts & (nelts - 1))
495  {
496  fformat (stderr, "FATAL: nelts MUST be a power of 2\n");
497  abort ();
498  }
499  }
500 
501  return (fq);
502 }
503 
504 void vl_msg_api_handler_no_free (void *) __attribute__ ((weak));
505 void
507 {
508 }
509 
510 /* Turned off, save as reference material... */
511 #if 0
512 static inline int
513 vlib_frame_queue_dequeue_internal (int thread_id,
514  vlib_main_t * vm, vlib_node_main_t * nm)
515 {
516  vlib_frame_queue_t *fq = vlib_frame_queues[thread_id];
518  vlib_frame_t *f;
521  u32 node_runtime_index;
522  int msg_type;
523  u64 before;
524  int processed = 0;
525 
526  ASSERT (vm == vlib_mains[thread_id]);
527 
528  while (1)
529  {
530  if (fq->head == fq->tail)
531  return processed;
532 
533  elt = fq->elts + ((fq->head + 1) & (fq->nelts - 1));
534 
535  if (!elt->valid)
536  return processed;
537 
538  before = clib_cpu_time_now ();
539 
540  f = elt->frame;
541  node_runtime_index = elt->node_runtime_index;
542  msg_type = elt->msg_type;
543 
544  switch (msg_type)
545  {
546  case VLIB_FRAME_QUEUE_ELT_FREE_BUFFERS:
548  /* note fallthrough... */
549  case VLIB_FRAME_QUEUE_ELT_FREE_FRAME:
551  node_runtime_index);
552  vlib_frame_free (vm, r, f);
553  break;
555  vec_add2 (vm->node_main.pending_frames, p, 1);
557  p->node_runtime_index = elt->node_runtime_index;
558  p->frame_index = vlib_frame_index (vm, f);
560  fq->dequeue_vectors += (u64) f->n_vectors;
561  break;
562  case VLIB_FRAME_QUEUE_ELT_API_MSG:
564  break;
565  default:
566  clib_warning ("bogus frame queue message, type %d", msg_type);
567  break;
568  }
569  elt->valid = 0;
570  fq->dequeues++;
571  fq->dequeue_ticks += clib_cpu_time_now () - before;
573  fq->head++;
574  processed++;
575  }
576  ASSERT (0);
577  return processed;
578 }
579 
580 int
581 vlib_frame_queue_dequeue (int thread_id,
582  vlib_main_t * vm, vlib_node_main_t * nm)
583 {
584  return vlib_frame_queue_dequeue_internal (thread_id, vm, nm);
585 }
586 
587 int
588 vlib_frame_queue_enqueue (vlib_main_t * vm, u32 node_runtime_index,
589  u32 frame_queue_index, vlib_frame_t * frame,
591 {
592  vlib_frame_queue_t *fq = vlib_frame_queues[frame_queue_index];
594  u32 save_count;
595  u64 new_tail;
596  u64 before = clib_cpu_time_now ();
597 
598  ASSERT (fq);
599 
600  new_tail = __sync_add_and_fetch (&fq->tail, 1);
601 
602  /* Wait until a ring slot is available */
603  while (new_tail >= fq->head + fq->nelts)
604  {
605  f64 b4 = vlib_time_now_ticks (vm, before);
607  /* Bad idea. Dequeue -> enqueue -> dequeue -> trouble */
608  // vlib_frame_queue_dequeue (vm->thread_index, vm, nm);
609  }
610 
611  elt = fq->elts + (new_tail & (fq->nelts - 1));
612 
613  /* this would be very bad... */
614  while (elt->valid)
615  {
616  }
617 
618  /* Once we enqueue the frame, frame->n_vectors is owned elsewhere... */
619  save_count = frame->n_vectors;
620 
621  elt->frame = frame;
622  elt->node_runtime_index = node_runtime_index;
623  elt->msg_type = type;
625  elt->valid = 1;
626 
627  return save_count;
628 }
629 #endif /* 0 */
630 
631 /* To be called by vlib worker threads upon startup */
632 void
634 {
636 
637  /*
638  * Note: disabling signals in worker threads as follows
639  * prevents the api post-mortem dump scheme from working
640  * {
641  * sigset_t s;
642  * sigfillset (&s);
643  * pthread_sigmask (SIG_SETMASK, &s, 0);
644  * }
645  */
646 
648 
649  if (vec_len (tm->thread_prefix) && w->registration->short_name)
650  {
651  w->name = format (0, "%v_%s_%d%c", tm->thread_prefix,
652  w->registration->short_name, w->instance_id, '\0');
653  vlib_set_thread_name ((char *) w->name);
654  }
655 
656  if (!w->registration->use_pthreads)
657  {
658 
659  /* Initial barrier sync, for both worker and i/o threads */
660  clib_smp_atomic_add (vlib_worker_threads->workers_at_barrier, 1);
661 
662  while (*vlib_worker_threads->wait_at_barrier)
663  ;
664 
665  clib_smp_atomic_add (vlib_worker_threads->workers_at_barrier, -1);
666  }
667 }
668 
669 void *
671 {
672  void *rv;
673  vlib_worker_thread_t *w = arg;
674 
675  w->lwp = syscall (SYS_gettid);
676  w->thread_id = pthread_self ();
677 
678  __os_thread_index = w - vlib_worker_threads;
679 
680  rv = (void *) clib_calljmp
681  ((uword (*)(uword)) w->thread_function,
683  /* NOTREACHED, we hope */
684  return rv;
685 }
686 
687 static clib_error_t *
688 vlib_launch_thread_int (void *fp, vlib_worker_thread_t * w, unsigned lcore_id)
689 {
691  void *(*fp_arg) (void *) = fp;
692 
693  w->lcore_id = lcore_id;
695  return tm->cb.vlib_launch_thread_cb (fp, (void *) w, lcore_id);
696  else
697  {
698  pthread_t worker;
699  cpu_set_t cpuset;
700  CPU_ZERO (&cpuset);
701  CPU_SET (lcore_id, &cpuset);
702 
703  if (pthread_create (&worker, NULL /* attr */ , fp_arg, (void *) w))
704  return clib_error_return_unix (0, "pthread_create");
705 
706  if (pthread_setaffinity_np (worker, sizeof (cpu_set_t), &cpuset))
707  return clib_error_return_unix (0, "pthread_setaffinity_np");
708 
709  return 0;
710  }
711 }
712 
713 static clib_error_t *
715 {
716  int i, j;
718  vlib_main_t *vm_clone;
719  void *oldheap;
723  u32 n_vlib_mains = tm->n_vlib_mains;
724  u32 worker_thread_index;
725  u8 *main_heap = clib_mem_get_per_cpu_heap ();
726  mheap_t *main_heap_header = mheap_header (main_heap);
727 
728  vec_reset_length (vlib_worker_threads);
729 
730  /* Set up the main thread */
731  vec_add2_aligned (vlib_worker_threads, w, 1, CLIB_CACHE_LINE_BYTES);
732  w->elog_track.name = "main thread";
734 
735  if (vec_len (tm->thread_prefix))
736  {
737  w->name = format (0, "%v_main%c", tm->thread_prefix, '\0');
738  vlib_set_thread_name ((char *) w->name);
739  }
740 
741  /*
742  * Truth of the matter: we always use at least two
743  * threads. So, make the main heap thread-safe
744  * and make the event log thread-safe.
745  */
746  main_heap_header->flags |= MHEAP_FLAG_THREAD_SAFE;
747  vm->elog_main.lock =
749  vm->elog_main.lock[0] = 0;
750 
751  if (n_vlib_mains > 1)
752  {
753  /* Replace hand-crafted length-1 vector with a real vector */
754  vlib_mains = 0;
755 
758  _vec_len (vlib_mains) = 0;
760 
761  vlib_worker_threads->wait_at_barrier =
763  vlib_worker_threads->workers_at_barrier =
765 
766  vlib_worker_threads->node_reforks_required =
768 
769  /* Ask for an initial barrier sync */
770  *vlib_worker_threads->workers_at_barrier = 0;
771  *vlib_worker_threads->wait_at_barrier = 1;
772 
773  /* Without update or refork */
774  *vlib_worker_threads->node_reforks_required = 0;
776 
777  /* init timing */
778  vm->barrier_epoch = 0;
779  vm->barrier_no_close_before = 0;
780 
781  worker_thread_index = 1;
782 
783  for (i = 0; i < vec_len (tm->registrations); i++)
784  {
785  vlib_node_main_t *nm, *nm_clone;
786  vlib_buffer_main_t *bm_clone;
787  vlib_buffer_free_list_t *fl_clone, *fl_orig;
788  vlib_buffer_free_list_t *orig_freelist_pool;
789  int k;
790 
791  tr = tm->registrations[i];
792 
793  if (tr->count == 0)
794  continue;
795 
796  for (k = 0; k < tr->count; k++)
797  {
798  vlib_node_t *n;
799 
800  vec_add2 (vlib_worker_threads, w, 1);
801  if (tr->mheap_size)
802  w->thread_mheap =
803  mheap_alloc (0 /* use VM */ , tr->mheap_size);
804  else
805  w->thread_mheap = main_heap;
806 
807  w->thread_stack =
808  vlib_thread_stack_init (w - vlib_worker_threads);
809  w->thread_function = tr->function;
810  w->thread_function_arg = w;
811  w->instance_id = k;
812  w->registration = tr;
813 
814  w->elog_track.name =
815  (char *) format (0, "%s %d", tr->name, k + 1);
816  vec_add1 (w->elog_track.name, 0);
818 
819  if (tr->no_data_structure_clone)
820  continue;
821 
822  /* Fork vlib_global_main et al. Look for bugs here */
823  oldheap = clib_mem_set_heap (w->thread_mheap);
824 
825  vm_clone = clib_mem_alloc (sizeof (*vm_clone));
826  clib_memcpy (vm_clone, vlib_mains[0], sizeof (*vm_clone));
827 
828  vm_clone->thread_index = worker_thread_index;
829  vm_clone->heap_base = w->thread_mheap;
830  vm_clone->mbuf_alloc_list = 0;
831  vm_clone->init_functions_called =
832  hash_create (0, /* value bytes */ 0);
833  vm_clone->pending_rpc_requests = 0;
834  vec_validate (vm_clone->pending_rpc_requests, 0);
835  _vec_len (vm_clone->pending_rpc_requests) = 0;
836  memset (&vm_clone->random_buffer, 0,
837  sizeof (vm_clone->random_buffer));
838 
839  nm = &vlib_mains[0]->node_main;
840  nm_clone = &vm_clone->node_main;
841  /* fork next frames array, preserving node runtime indices */
842  nm_clone->next_frames = vec_dup (nm->next_frames);
843  for (j = 0; j < vec_len (nm_clone->next_frames); j++)
844  {
845  vlib_next_frame_t *nf = &nm_clone->next_frames[j];
846  u32 save_node_runtime_index;
847  u32 save_flags;
848 
849  save_node_runtime_index = nf->node_runtime_index;
850  save_flags = nf->flags & VLIB_FRAME_NO_FREE_AFTER_DISPATCH;
852  nf->node_runtime_index = save_node_runtime_index;
853  nf->flags = save_flags;
854  }
855 
856  /* fork the frame dispatch queue */
857  nm_clone->pending_frames = 0;
858  vec_validate (nm_clone->pending_frames, 10); /* $$$$$?????? */
859  _vec_len (nm_clone->pending_frames) = 0;
860 
861  /* fork nodes */
862  nm_clone->nodes = 0;
863 
864  /* Allocate all nodes in single block for speed */
865  n = clib_mem_alloc_no_fail (vec_len (nm->nodes) * sizeof (*n));
866 
867  for (j = 0; j < vec_len (nm->nodes); j++)
868  {
869  clib_memcpy (n, nm->nodes[j], sizeof (*n));
870  /* none of the copied nodes have enqueue rights given out */
872  memset (&n->stats_total, 0, sizeof (n->stats_total));
873  memset (&n->stats_last_clear, 0,
874  sizeof (n->stats_last_clear));
875  vec_add1 (nm_clone->nodes, n);
876  n++;
877  }
880  vec_foreach (rt,
882  {
883  vlib_node_t *n = vlib_get_node (vm, rt->node_index);
884  rt->thread_index = vm_clone->thread_index;
885  /* copy initial runtime_data from node */
886  if (n->runtime_data && n->runtime_data_bytes > 0)
889  n->runtime_data_bytes));
890  }
891 
895  {
896  vlib_node_t *n = vlib_get_node (vm, rt->node_index);
897  rt->thread_index = vm_clone->thread_index;
898  /* copy initial runtime_data from node */
899  if (n->runtime_data && n->runtime_data_bytes > 0)
902  n->runtime_data_bytes));
903  }
904 
905  nm_clone->processes = vec_dup (nm->processes);
906 
907  /* zap the (per worker) frame freelists, etc */
908  nm_clone->frame_sizes = 0;
909  nm_clone->frame_size_hash = hash_create (0, sizeof (uword));
910 
911  /* Packet trace buffers are guaranteed to be empty, nothing to do here */
912 
913  clib_mem_set_heap (oldheap);
915 
916  vm_clone->error_main.counters =
917  vec_dup (vlib_mains[0]->error_main.counters);
918  vm_clone->error_main.counters_last_clear =
919  vec_dup (vlib_mains[0]->error_main.counters_last_clear);
920 
921  /* Fork the vlib_buffer_main_t free lists, etc. */
922  bm_clone = vec_dup (vm_clone->buffer_main);
923  vm_clone->buffer_main = bm_clone;
924 
925  orig_freelist_pool = bm_clone->buffer_free_list_pool;
926  bm_clone->buffer_free_list_pool = 0;
927 
928  /* *INDENT-OFF* */
929  pool_foreach (fl_orig, orig_freelist_pool,
930  ({
932  fl_clone, CLIB_CACHE_LINE_BYTES);
933  ASSERT (fl_orig - orig_freelist_pool
934  == fl_clone - bm_clone->buffer_free_list_pool);
935 
936  fl_clone[0] = fl_orig[0];
937  fl_clone->buffers = 0;
938  fl_clone->n_alloc = 0;
939  }));
940 /* *INDENT-ON* */
941 
942  worker_thread_index++;
943  }
944  }
945  }
946  else
947  {
948  /* only have non-data-structure copy threads to create... */
949  for (i = 0; i < vec_len (tm->registrations); i++)
950  {
951  tr = tm->registrations[i];
952 
953  for (j = 0; j < tr->count; j++)
954  {
955  vec_add2 (vlib_worker_threads, w, 1);
956  if (tr->mheap_size)
957  w->thread_mheap =
958  mheap_alloc (0 /* use VM */ , tr->mheap_size);
959  else
960  w->thread_mheap = main_heap;
961  w->thread_stack =
962  vlib_thread_stack_init (w - vlib_worker_threads);
963  w->thread_function = tr->function;
964  w->thread_function_arg = w;
965  w->instance_id = j;
966  w->elog_track.name =
967  (char *) format (0, "%s %d", tr->name, j + 1);
968  w->registration = tr;
969  vec_add1 (w->elog_track.name, 0);
971  }
972  }
973  }
974 
975  worker_thread_index = 1;
976 
977  for (i = 0; i < vec_len (tm->registrations); i++)
978  {
979  clib_error_t *err;
980  int j;
981 
982  tr = tm->registrations[i];
983 
984  if (tr->use_pthreads || tm->use_pthreads)
985  {
986  for (j = 0; j < tr->count; j++)
987  {
988  w = vlib_worker_threads + worker_thread_index++;
990  w, 0);
991  if (err)
992  clib_error_report (err);
993  }
994  }
995  else
996  {
997  uword c;
998  /* *INDENT-OFF* */
999  clib_bitmap_foreach (c, tr->coremask, ({
1000  w = vlib_worker_threads + worker_thread_index++;
1001  err = vlib_launch_thread_int (vlib_worker_thread_bootstrap_fn,
1002  w, c);
1003  if (err)
1004  clib_error_report (err);
1005  }));
1006  /* *INDENT-ON* */
1007  }
1008  }
1011  return 0;
1012 }
1013 
1015 
1016 
1017 static inline void
1019 {
1020  int i, j;
1021  vlib_main_t *vm;
1022  vlib_node_main_t *nm, *nm_clone;
1023  vlib_main_t *vm_clone;
1024  vlib_node_runtime_t *rt;
1025  never_inline void
1027  vlib_node_runtime_t * r,
1028  uword n_calls,
1029  uword n_vectors, uword n_clocks);
1030 
1031  ASSERT (vlib_get_thread_index () == 0);
1032 
1033  vm = vlib_mains[0];
1034  nm = &vm->node_main;
1035 
1036  ASSERT (*vlib_worker_threads->wait_at_barrier == 1);
1037 
1038  /*
1039  * Scrape all runtime stats, so we don't lose node runtime(s) with
1040  * pending counts, or throw away worker / io thread counts.
1041  */
1042  for (j = 0; j < vec_len (nm->nodes); j++)
1043  {
1044  vlib_node_t *n;
1045  n = nm->nodes[j];
1046  vlib_node_sync_stats (vm, n);
1047  }
1048 
1049  for (i = 1; i < vec_len (vlib_mains); i++)
1050  {
1051  vlib_node_t *n;
1052 
1053  vm_clone = vlib_mains[i];
1054  nm_clone = &vm_clone->node_main;
1055 
1056  for (j = 0; j < vec_len (nm_clone->nodes); j++)
1057  {
1058  n = nm_clone->nodes[j];
1059 
1060  rt = vlib_node_get_runtime (vm_clone, n->index);
1061  vlib_node_runtime_sync_stats (vm_clone, rt, 0, 0, 0);
1062  }
1063  }
1064 
1065  /* Per-worker clone rebuilds are now done on each thread */
1066 }
1067 
1068 
1069 void
1071 {
1072  vlib_main_t *vm, *vm_clone;
1073  vlib_node_main_t *nm, *nm_clone;
1074  vlib_node_t **old_nodes_clone;
1075  vlib_node_runtime_t *rt, *old_rt;
1076 
1077  vlib_node_t *new_n_clone;
1078 
1079  int j;
1080 
1081  vm = vlib_mains[0];
1082  nm = &vm->node_main;
1083  vm_clone = vlib_get_main ();
1084  nm_clone = &vm_clone->node_main;
1085 
1086  /* Re-clone error heap */
1087  u64 *old_counters = vm_clone->error_main.counters;
1088  u64 *old_counters_all_clear = vm_clone->error_main.counters_last_clear;
1089 
1090  clib_memcpy (&vm_clone->error_main, &vm->error_main,
1091  sizeof (vm->error_main));
1092  j = vec_len (vm->error_main.counters) - 1;
1093  vec_validate_aligned (old_counters, j, CLIB_CACHE_LINE_BYTES);
1094  vec_validate_aligned (old_counters_all_clear, j, CLIB_CACHE_LINE_BYTES);
1095  vm_clone->error_main.counters = old_counters;
1096  vm_clone->error_main.counters_last_clear = old_counters_all_clear;
1097 
1098  nm_clone = &vm_clone->node_main;
1099  vec_free (nm_clone->next_frames);
1100  nm_clone->next_frames = vec_dup (nm->next_frames);
1101 
1102  for (j = 0; j < vec_len (nm_clone->next_frames); j++)
1103  {
1104  vlib_next_frame_t *nf = &nm_clone->next_frames[j];
1105  u32 save_node_runtime_index;
1106  u32 save_flags;
1107 
1108  save_node_runtime_index = nf->node_runtime_index;
1109  save_flags = nf->flags & VLIB_FRAME_NO_FREE_AFTER_DISPATCH;
1110  vlib_next_frame_init (nf);
1111  nf->node_runtime_index = save_node_runtime_index;
1112  nf->flags = save_flags;
1113  }
1114 
1115  old_nodes_clone = nm_clone->nodes;
1116  nm_clone->nodes = 0;
1117 
1118  /* re-fork nodes */
1119 
1120  /* Allocate all nodes in single block for speed */
1121  new_n_clone =
1122  clib_mem_alloc_no_fail (vec_len (nm->nodes) * sizeof (*new_n_clone));
1123  for (j = 0; j < vec_len (nm->nodes); j++)
1124  {
1125  vlib_node_t *old_n_clone;
1126  vlib_node_t *new_n;
1127 
1128  new_n = nm->nodes[j];
1129  old_n_clone = old_nodes_clone[j];
1130 
1131  clib_memcpy (new_n_clone, new_n, sizeof (*new_n));
1132  /* none of the copied nodes have enqueue rights given out */
1134 
1135  if (j >= vec_len (old_nodes_clone))
1136  {
1137  /* new node, set to zero */
1138  memset (&new_n_clone->stats_total, 0,
1139  sizeof (new_n_clone->stats_total));
1140  memset (&new_n_clone->stats_last_clear, 0,
1141  sizeof (new_n_clone->stats_last_clear));
1142  }
1143  else
1144  {
1145  /* Copy stats if the old data is valid */
1146  clib_memcpy (&new_n_clone->stats_total,
1147  &old_n_clone->stats_total,
1148  sizeof (new_n_clone->stats_total));
1149  clib_memcpy (&new_n_clone->stats_last_clear,
1150  &old_n_clone->stats_last_clear,
1151  sizeof (new_n_clone->stats_last_clear));
1152 
1153  /* keep previous node state */
1154  new_n_clone->state = old_n_clone->state;
1155  }
1156  vec_add1 (nm_clone->nodes, new_n_clone);
1157  new_n_clone++;
1158  }
1159  /* Free the old node clones */
1160  clib_mem_free (old_nodes_clone[0]);
1161 
1162  vec_free (old_nodes_clone);
1163 
1164 
1165  /* re-clone internal nodes */
1166  old_rt = nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL];
1169 
1171  {
1172  vlib_node_t *n = vlib_get_node (vm, rt->node_index);
1173  rt->thread_index = vm_clone->thread_index;
1174  /* copy runtime_data, will be overwritten later for existing rt */
1175  if (n->runtime_data && n->runtime_data_bytes > 0)
1178  n->runtime_data_bytes));
1179  }
1180 
1181  for (j = 0; j < vec_len (old_rt); j++)
1182  {
1183  rt = vlib_node_get_runtime (vm_clone, old_rt[j].node_index);
1184  rt->state = old_rt[j].state;
1185  clib_memcpy (rt->runtime_data, old_rt[j].runtime_data,
1187  }
1188 
1189  vec_free (old_rt);
1190 
1191  /* re-clone input nodes */
1192  old_rt = nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT];
1193  nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT] =
1195 
1197  {
1198  vlib_node_t *n = vlib_get_node (vm, rt->node_index);
1199  rt->thread_index = vm_clone->thread_index;
1200  /* copy runtime_data, will be overwritten later for existing rt */
1201  if (n->runtime_data && n->runtime_data_bytes > 0)
1204  n->runtime_data_bytes));
1205  }
1206 
1207  for (j = 0; j < vec_len (old_rt); j++)
1208  {
1209  rt = vlib_node_get_runtime (vm_clone, old_rt[j].node_index);
1210  rt->state = old_rt[j].state;
1211  clib_memcpy (rt->runtime_data, old_rt[j].runtime_data,
1213  }
1214 
1215  vec_free (old_rt);
1216 
1217  nm_clone->processes = vec_dup (nm->processes);
1218 }
1219 
1220 void
1222 {
1223  /*
1224  * Make a note that we need to do a node runtime update
1225  * prior to releasing the barrier.
1226  */
1228 }
1229 
1230 u32
1231 unformat_sched_policy (unformat_input_t * input, va_list * args)
1232 {
1233  u32 *r = va_arg (*args, u32 *);
1234 
1235  if (0);
1236 #define _(v,f,s) else if (unformat (input, s)) *r = SCHED_POLICY_##f;
1238 #undef _
1239  else
1240  return 0;
1241  return 1;
1242 }
1243 
1244 static clib_error_t *
1246 {
1248  uword *p;
1250  u8 *name;
1251  u64 coremask;
1252  uword *bitmap;
1253  u32 count;
1254 
1256 
1257  tm->n_thread_stacks = 1; /* account for main thread */
1258  tm->sched_policy = ~0;
1259  tm->sched_priority = ~0;
1260 
1261  tr = tm->next;
1262 
1263  while (tr)
1264  {
1266  tr = tr->next;
1267  }
1268 
1269  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1270  {
1271  if (unformat (input, "use-pthreads"))
1272  tm->use_pthreads = 1;
1273  else if (unformat (input, "thread-prefix %v", &tm->thread_prefix))
1274  ;
1275  else if (unformat (input, "main-core %u", &tm->main_lcore))
1276  ;
1277  else if (unformat (input, "skip-cores %u", &tm->skip_cores))
1278  ;
1279  else if (unformat (input, "coremask-%s %llx", &name, &coremask))
1280  {
1282  if (p == 0)
1283  return clib_error_return (0, "no such thread type '%s'", name);
1284 
1285  tr = (vlib_thread_registration_t *) p[0];
1286 
1287  if (tr->use_pthreads)
1288  return clib_error_return (0,
1289  "coremask cannot be set for '%s' threads",
1290  name);
1291 
1293  (tr->coremask, 0, coremask, BITS (coremask));
1295  }
1296  else if (unformat (input, "corelist-%s %U", &name, unformat_bitmap_list,
1297  &bitmap))
1298  {
1300  if (p == 0)
1301  return clib_error_return (0, "no such thread type '%s'", name);
1302 
1303  tr = (vlib_thread_registration_t *) p[0];
1304 
1305  if (tr->use_pthreads)
1306  return clib_error_return (0,
1307  "corelist cannot be set for '%s' threads",
1308  name);
1309 
1310  tr->coremask = bitmap;
1312  }
1313  else
1314  if (unformat
1315  (input, "scheduler-policy %U", unformat_sched_policy,
1316  &tm->sched_policy))
1317  ;
1318  else if (unformat (input, "scheduler-priority %u", &tm->sched_priority))
1319  ;
1320  else if (unformat (input, "%s %u", &name, &count))
1321  {
1323  if (p == 0)
1324  return clib_error_return (0, "no such thread type 3 '%s'", name);
1325 
1326  tr = (vlib_thread_registration_t *) p[0];
1327  if (tr->fixed_count)
1328  return clib_error_return
1329  (0, "number of %s threads not configurable", tr->name);
1330  tr->count = count;
1331  }
1332  else
1333  break;
1334  }
1335 
1336  if (tm->sched_priority != ~0)
1337  {
1338  if (tm->sched_policy == SCHED_FIFO || tm->sched_policy == SCHED_RR)
1339  {
1340  u32 prio_max = sched_get_priority_max (tm->sched_policy);
1341  u32 prio_min = sched_get_priority_min (tm->sched_policy);
1342  if (tm->sched_priority > prio_max)
1343  tm->sched_priority = prio_max;
1344  if (tm->sched_priority < prio_min)
1345  tm->sched_priority = prio_min;
1346  }
1347  else
1348  {
1349  return clib_error_return
1350  (0,
1351  "scheduling priority (%d) is not allowed for `normal` scheduling policy",
1352  tm->sched_priority);
1353  }
1354  }
1355  tr = tm->next;
1356 
1357  if (!tm->thread_prefix)
1358  tm->thread_prefix = format (0, "vpp");
1359 
1360  while (tr)
1361  {
1362  tm->n_thread_stacks += tr->count;
1363  tm->n_pthreads += tr->count * tr->use_pthreads;
1364  tm->n_threads += tr->count * (tr->use_pthreads == 0);
1365  tr = tr->next;
1366  }
1367 
1368  return 0;
1369 }
1370 
1372 
1373 #if !defined (__x86_64__) && !defined (__i386__) && !defined (__aarch64__) && !defined (__powerpc64__) && !defined(__arm__)
1374 void
1375 __sync_fetch_and_add_8 (void)
1376 {
1377  fformat (stderr, "%s called\n", __FUNCTION__);
1378  abort ();
1379 }
1380 
1381 void
1382 __sync_add_and_fetch_8 (void)
1383 {
1384  fformat (stderr, "%s called\n", __FUNCTION__);
1385  abort ();
1386 }
1387 #endif
1388 
1389 void vnet_main_fixup (vlib_fork_fixup_t which) __attribute__ ((weak));
1390 void
1392 {
1393 }
1394 
1395 void
1397 {
1398  vlib_main_t *vm = vlib_get_main ();
1399 
1400  if (vlib_mains == 0)
1401  return;
1402 
1403  ASSERT (vlib_get_thread_index () == 0);
1405 
1406  switch (which)
1407  {
1410  break;
1411 
1412  default:
1413  ASSERT (0);
1414  }
1416 }
1417 
1418  /*
1419  * Enforce minimum open time to minimize packet loss due to Rx overflow,
1420  * based on a test based heuristic that barrier should be open for at least
1421  * 3 time as long as it is closed (with an upper bound of 1ms because by that
1422  * point it is probably too late to make a difference)
1423  */
1424 
1425 #ifndef BARRIER_MINIMUM_OPEN_LIMIT
1426 #define BARRIER_MINIMUM_OPEN_LIMIT 0.001
1427 #endif
1428 
1429 #ifndef BARRIER_MINIMUM_OPEN_FACTOR
1430 #define BARRIER_MINIMUM_OPEN_FACTOR 3
1431 #endif
1432 
1433 void
1435 {
1436  f64 deadline;
1437  f64 now;
1438  f64 t_entry;
1439  f64 t_open;
1440  f64 t_closed;
1441  u32 count;
1442 
1443  if (vec_len (vlib_mains) < 2)
1444  return;
1445 
1446  ASSERT (vlib_get_thread_index () == 0);
1447 
1448  count = vec_len (vlib_mains) - 1;
1449 
1450  /* Record entry relative to last close */
1451  now = vlib_time_now (vm);
1452  t_entry = now - vm->barrier_epoch;
1453 
1454  /* Tolerate recursive calls */
1455  if (++vlib_worker_threads[0].recursion_level > 1)
1456  {
1457  barrier_trace_sync_rec (t_entry);
1458  return;
1459  }
1460 
1461  vlib_worker_threads[0].barrier_sync_count++;
1462 
1463  /* Enforce minimum barrier open time to minimize packet loss */
1465  while ((now = vlib_time_now (vm)) < vm->barrier_no_close_before)
1466  ;
1467 
1468  /* Record time of closure */
1469  t_open = now - vm->barrier_epoch;
1470  vm->barrier_epoch = now;
1471 
1472  deadline = now + BARRIER_SYNC_TIMEOUT;
1473 
1474  *vlib_worker_threads->wait_at_barrier = 1;
1475  while (*vlib_worker_threads->workers_at_barrier != count)
1476  {
1477  if ((now = vlib_time_now (vm)) > deadline)
1478  {
1479  fformat (stderr, "%s: worker thread deadlock\n", __FUNCTION__);
1480  os_panic ();
1481  }
1482  }
1483 
1484  t_closed = now - vm->barrier_epoch;
1485 
1486  barrier_trace_sync (t_entry, t_open, t_closed);
1487 
1488 }
1489 
1490 void
1492 {
1493  f64 deadline;
1494  f64 now;
1495  f64 minimum_open;
1496  f64 t_entry;
1497  f64 t_closed_total;
1498  f64 t_update_main = 0.0;
1499  int refork_needed = 0;
1500 
1501  if (vec_len (vlib_mains) < 2)
1502  return;
1503 
1504  ASSERT (vlib_get_thread_index () == 0);
1505 
1506 
1507  now = vlib_time_now (vm);
1508  t_entry = now - vm->barrier_epoch;
1509 
1510  if (--vlib_worker_threads[0].recursion_level > 0)
1511  {
1512  barrier_trace_release_rec (t_entry);
1513  return;
1514  }
1515 
1516  /* Update (all) node runtimes before releasing the barrier, if needed */
1518  {
1519  /* Do stats elements on main thread */
1522 
1523  /* Do per thread rebuilds in parallel */
1524  refork_needed = 1;
1525  clib_smp_atomic_add (vlib_worker_threads->node_reforks_required,
1526  (vec_len (vlib_mains) - 1));
1527  now = vlib_time_now (vm);
1528  t_update_main = now - vm->barrier_epoch;
1529  }
1530 
1531  deadline = now + BARRIER_SYNC_TIMEOUT;
1532 
1533  *vlib_worker_threads->wait_at_barrier = 0;
1534 
1535  while (*vlib_worker_threads->workers_at_barrier > 0)
1536  {
1537  if ((now = vlib_time_now (vm)) > deadline)
1538  {
1539  fformat (stderr, "%s: worker thread deadlock\n", __FUNCTION__);
1540  os_panic ();
1541  }
1542  }
1543 
1544  /* Wait for reforks before continuing */
1545  if (refork_needed)
1546  {
1547  now = vlib_time_now (vm);
1548 
1549  deadline = now + BARRIER_SYNC_TIMEOUT;
1550 
1551  while (*vlib_worker_threads->node_reforks_required > 0)
1552  {
1553  if ((now = vlib_time_now (vm)) > deadline)
1554  {
1555  fformat (stderr, "%s: worker thread refork deadlock\n",
1556  __FUNCTION__);
1557  os_panic ();
1558  }
1559  }
1560  }
1561 
1562  t_closed_total = now - vm->barrier_epoch;
1563 
1564  minimum_open = t_closed_total * BARRIER_MINIMUM_OPEN_FACTOR;
1565 
1566  if (minimum_open > BARRIER_MINIMUM_OPEN_LIMIT)
1567  {
1568  minimum_open = BARRIER_MINIMUM_OPEN_LIMIT;
1569  }
1570 
1571  vm->barrier_no_close_before = now + minimum_open;
1572 
1573  /* Record barrier epoch (used to enforce minimum open time) */
1574  vm->barrier_epoch = now;
1575 
1576  barrier_trace_release (t_entry, t_closed_total, t_update_main);
1577 
1578 }
1579 
1580 /*
1581  * Check the frame queue to see if any frames are available.
1582  * If so, pull the packets off the frames and put them to
1583  * the handoff node.
1584  */
1585 int
1587 {
1588  u32 thread_id = vm->thread_index;
1589  vlib_frame_queue_t *fq = fqm->vlib_frame_queues[thread_id];
1591  u32 *from, *to;
1592  vlib_frame_t *f;
1593  int msg_type;
1594  int processed = 0;
1595  u32 n_left_to_node;
1596  u32 vectors = 0;
1597 
1598  ASSERT (fq);
1599  ASSERT (vm == vlib_mains[thread_id]);
1600 
1601  if (PREDICT_FALSE (fqm->node_index == ~0))
1602  return 0;
1603  /*
1604  * Gather trace data for frame queues
1605  */
1606  if (PREDICT_FALSE (fq->trace))
1607  {
1608  frame_queue_trace_t *fqt;
1610  u32 elix;
1611 
1612  fqt = &fqm->frame_queue_traces[thread_id];
1613 
1614  fqt->nelts = fq->nelts;
1615  fqt->head = fq->head;
1616  fqt->head_hint = fq->head_hint;
1617  fqt->tail = fq->tail;
1618  fqt->threshold = fq->vector_threshold;
1619  fqt->n_in_use = fqt->tail - fqt->head;
1620  if (fqt->n_in_use >= fqt->nelts)
1621  {
1622  // if beyond max then use max
1623  fqt->n_in_use = fqt->nelts - 1;
1624  }
1625 
1626  /* Record the number of elements in use in the histogram */
1627  fqh = &fqm->frame_queue_histogram[thread_id];
1628  fqh->count[fqt->n_in_use]++;
1629 
1630  /* Record a snapshot of the elements in use */
1631  for (elix = 0; elix < fqt->nelts; elix++)
1632  {
1633  elt = fq->elts + ((fq->head + 1 + elix) & (fq->nelts - 1));
1634  if (1 || elt->valid)
1635  {
1636  fqt->n_vectors[elix] = elt->n_vectors;
1637  }
1638  }
1639  fqt->written = 1;
1640  }
1641 
1642  while (1)
1643  {
1644  if (fq->head == fq->tail)
1645  {
1646  fq->head_hint = fq->head;
1647  return processed;
1648  }
1649 
1650  elt = fq->elts + ((fq->head + 1) & (fq->nelts - 1));
1651 
1652  if (!elt->valid)
1653  {
1654  fq->head_hint = fq->head;
1655  return processed;
1656  }
1657 
1658  from = elt->buffer_index;
1659  msg_type = elt->msg_type;
1660 
1662  ASSERT (elt->n_vectors <= VLIB_FRAME_SIZE);
1663 
1664  f = vlib_get_frame_to_node (vm, fqm->node_index);
1665 
1666  to = vlib_frame_vector_args (f);
1667 
1668  n_left_to_node = elt->n_vectors;
1669 
1670  while (n_left_to_node >= 4)
1671  {
1672  to[0] = from[0];
1673  to[1] = from[1];
1674  to[2] = from[2];
1675  to[3] = from[3];
1676  to += 4;
1677  from += 4;
1678  n_left_to_node -= 4;
1679  }
1680 
1681  while (n_left_to_node > 0)
1682  {
1683  to[0] = from[0];
1684  to++;
1685  from++;
1686  n_left_to_node--;
1687  }
1688 
1689  vectors += elt->n_vectors;
1690  f->n_vectors = elt->n_vectors;
1691  vlib_put_frame_to_node (vm, fqm->node_index, f);
1692 
1693  elt->valid = 0;
1694  elt->n_vectors = 0;
1695  elt->msg_type = 0xfefefefe;
1697  fq->head++;
1698  processed++;
1699 
1700  /*
1701  * Limit the number of packets pushed into the graph
1702  */
1703  if (vectors >= fq->vector_threshold)
1704  {
1705  fq->head_hint = fq->head;
1706  return processed;
1707  }
1708  }
1709  ASSERT (0);
1710  return processed;
1711 }
1712 
1713 void
1715 {
1718  vlib_main_t *vm = vlib_get_main ();
1719  clib_error_t *e;
1720 
1722 
1724  clib_time_init (&vm->clib_time);
1726 
1727  /* Wait until the dpdk init sequence is complete */
1728  while (tm->extern_thread_mgmt && tm->worker_thread_release == 0)
1730 
1732  (vm, vm->worker_init_function_registrations, 1 /* call_once */ );
1733  if (e)
1734  clib_error_report (e);
1735 
1736  vlib_worker_loop (vm);
1737 }
1738 
1739 /* *INDENT-OFF* */
1740 VLIB_REGISTER_THREAD (worker_thread_reg, static) = {
1741  .name = "workers",
1742  .short_name = "wk",
1743  .function = vlib_worker_thread_fn,
1744 };
1745 /* *INDENT-ON* */
1746 
1747 u32
1748 vlib_frame_queue_main_init (u32 node_index, u32 frame_queue_nelts)
1749 {
1752  vlib_frame_queue_t *fq;
1753  int i;
1754 
1755  if (frame_queue_nelts == 0)
1756  frame_queue_nelts = FRAME_QUEUE_NELTS;
1757 
1758  vec_add2 (tm->frame_queue_mains, fqm, 1);
1759 
1760  fqm->node_index = node_index;
1761 
1763  _vec_len (fqm->vlib_frame_queues) = 0;
1764  for (i = 0; i < tm->n_vlib_mains; i++)
1765  {
1766  fq = vlib_frame_queue_alloc (frame_queue_nelts);
1767  vec_add1 (fqm->vlib_frame_queues, fq);
1768  }
1769 
1770  return (fqm - tm->frame_queue_mains);
1771 }
1772 
1773 int
1775 {
1777 
1778  if (tm->extern_thread_mgmt)
1779  return -1;
1780 
1782  tm->extern_thread_mgmt = 1;
1783  return 0;
1784 }
1785 
1786 void
1788  args)
1789 {
1790  ASSERT (vlib_get_thread_index () == 0);
1792  args->type_opaque, args->data);
1793 }
1794 
1796 
1797 void
1798 vlib_rpc_call_main_thread (void *callback, u8 * args, u32 arg_size)
1799 {
1801  {
1802  void (*fp) (void *, u8 *, u32) = rpc_call_main_thread_cb_fn;
1803  (*fp) (callback, args, arg_size);
1804  }
1805  else
1806  clib_warning ("BUG: rpc_call_main_thread_cb_fn NULL!");
1807 }
1808 
1809 clib_error_t *
1811 {
1812  return 0;
1813 }
1814 
1816 
1817 /*
1818  * fd.io coding-style-patch-verification: ON
1819  *
1820  * Local Variables:
1821  * eval: (c-set-style "gnu")
1822  * End:
1823  */
_vlib_init_function_list_elt_t * worker_init_function_registrations
Definition: main.h:179
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:432
static void barrier_trace_release_rec(f64 t_entry)
Definition: threads.c:244
static void barrier_trace_sync(f64 t_entry, f64 t_open, f64 t_closed)
Definition: threads.c:234
u32 vl(void *p)
Definition: threads.c:30
uword * pending_rpc_requests
Definition: main.h:214
vlib_main_t vlib_global_main
Definition: main.c:1637
never_inline void vlib_node_runtime_sync_stats(vlib_main_t *vm, vlib_node_runtime_t *r, uword n_calls, uword n_vectors, uword n_clocks)
Definition: main.c:540
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:337
clib_error_t *(* vlib_thread_set_lcore_cb)(u32 thread, u16 lcore)
Definition: threads.h:286
#define clib_min(x, y)
Definition: clib.h:340
vlib_process_t ** processes
Definition: node.h:681
static void vlib_buffer_free(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Free buffers Frees the entire buffer chain for each buffer.
Definition: buffer_funcs.h:356
u8 runtime_data[0]
Function dependent node-runtime data.
Definition: node.h:464
int vlib_frame_queue_enqueue(vlib_main_t *vm, u32 node_runtime_index, u32 frame_queue_index, vlib_frame_t *frame, vlib_frame_queue_msg_type_t type)
#define VLIB_MAIN_LOOP_ENTER_FUNCTION(x)
Definition: init.h:114
word elog_track_register(elog_main_t *em, elog_track_t *t)
register an event track
Definition: elog.c:198
void * mheap_alloc(void *memory, uword size)
Definition: mheap.c:947
#define NULL
Definition: clib.h:55
u32 index
Definition: node.h:237
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:224
#define vec_add2_aligned(V, P, N, A)
Add N elements to end of vector V, return pointer to new elements in P.
Definition: vec.h:569
clib_error_t * threads_init(vlib_main_t *vm)
Definition: threads.c:1810
void os_panic(void)
Definition: unix-misc.c:174
u32 vlib_frame_queue_main_init(u32 node_index, u32 frame_queue_nelts)
Definition: threads.c:1748
u32 thread_index
Definition: main.h:173
void * thread_function_arg
Definition: threads.h:114
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:518
static int sort_registrations_by_no_clone(void *a0, void *a1)
Definition: threads.c:282
static u64 clib_cpu_time_now(void)
Definition: time.h:73
frame_queue_trace_t * frame_queue_traces
Definition: threads.h:170
void vlib_process_signal_event_mt_helper(vlib_process_signal_event_mt_args_t *args)
Definition: threads.c:1787
elog_track_t elog_track
Definition: threads.h:116
#define VLIB_FRAME_NO_FREE_AFTER_DISPATCH
Definition: node.h:362
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
Definition: vec.h:557
static mheap_t * mheap_header(u8 *v)
vlib_buffer_main_t * buffer_main
Definition: main.h:106
void vnet_main_fixup(vlib_fork_fixup_t which)
Definition: threads.c:1391
static uword * clib_bitmap_set(uword *ai, uword i, uword value)
Sets the ith bit of a bitmap to new_value Removes trailing zeros from the bitmap. ...
Definition: bitmap.h:167
#define hash_set_mem(h, key, value)
Definition: hash.h:274
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
clib_time_t clib_time
Definition: main.h:62
void vlib_worker_thread_fn(void *arg)
Definition: threads.c:1714
u32 unformat_sched_policy(unformat_input_t *input, va_list *args)
Definition: threads.c:1231
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
Definition: vec.h:443
struct vlib_thread_registration_ * next
Definition: threads.h:47
#define MHEAP_FLAG_THREAD_SAFE
u32 buffer_index[VLIB_FRAME_SIZE]
Definition: threads.h:98
void * runtime_data
Definition: node.h:243
volatile u32 valid
Definition: threads.h:92
vlib_main_t ** vlib_mains
Definition: buffer.c:292
#define clib_bitmap_dup(v)
Duplicate a bitmap.
Definition: bitmap.h:87
#define vec_reset_length(v)
Reset vector length to zero NULL-pointer tolerant.
pthread_t thread[MAX_CONNS]
Definition: main.c:121
u8 state
Definition: node.h:265
u16 thread_index
thread this node runs on
Definition: node.h:462
#define vlib_worker_thread_barrier_sync(X)
Definition: threads.h:212
u64 * counters_last_clear
Definition: error.h:81
static void vlib_worker_thread_barrier_check(void)
Definition: threads.h:392
vlib_thread_registration_t * next
Definition: threads.h:292
#define vec_add1_aligned(V, E, A)
Add 1 element to end of vector (alignment specified).
Definition: vec.h:528
vlib_node_stats_t stats_last_clear
Definition: node.h:231
#define clib_smp_atomic_add(addr, increment)
Definition: smp.h:46
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:438
void vlib_worker_thread_node_runtime_update(void)
Definition: threads.c:1221
u64 count[FRAME_QUEUE_MAX_NELTS]
Definition: node.h:725
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
vlib_frame_queue_msg_type_t
Definition: threads.h:84
vlib_node_t ** nodes
Definition: node.h:640
int i32
Definition: types.h:81
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
vlib_frame_t * vlib_get_frame_to_node(vlib_main_t *vm, u32 to_node_index)
Definition: main.c:182
#define clib_error_return(e, args...)
Definition: error.h:99
uword * lock
SMP lock, non-zero means locking required.
Definition: elog.h:172
uword * cpu_core_bitmap
Definition: threads.h:329
#define BARRIER_MINIMUM_OPEN_FACTOR
Definition: threads.c:1430
clib_error_t * vlib_call_init_exit_functions(vlib_main_t *vm, _vlib_init_function_list_elt_t *head, int call_once)
Definition: init.c:43
unsigned long u64
Definition: types.h:89
vlib_frame_queue_elt_t * elts
Definition: threads.h:159
vlib_node_runtime_t * nodes_by_type[VLIB_N_NODE_TYPE]
Definition: node.h:650
void vlib_set_thread_name(char *name)
Definition: threads.c:267
void vl_msg_api_handler_no_free(void *)
Definition: threads.c:506
#define hash_create_string(elts, value_bytes)
Definition: hash.h:675
void unformat_init_string(unformat_input_t *input, char *string, int string_len)
Definition: unformat.c:1023
vlib_fork_fixup_t
Definition: threads.h:236
#define BARRIER_SYNC_TIMEOUT
Definition: threads.h:204
#define VLIB_NODE_RUNTIME_DATA_SIZE
Definition: node.h:475
void * rpc_call_main_thread_cb_fn
Definition: threads.c:1795
VLIB_REGISTER_THREAD(worker_thread_reg, static)
int extern_thread_mgmt
Definition: threads.h:348
vlib_worker_thread_t * vlib_worker_threads
Definition: threads.c:35
#define clib_bitmap_foreach(i, ai, body)
Macro to iterate across set bits in a bitmap.
Definition: bitmap.h:361
u32 next_frame_index
Definition: node.h:403
vlib_node_stats_t stats_total
Definition: node.h:227
volatile u64 head
Definition: threads.h:146
u16 state
Input node state.
Definition: node.h:452
static void vlib_process_signal_event(vlib_main_t *vm, uword node_index, uword type_opaque, uword data)
Definition: node_funcs.h:950
static uword clib_bitmap_first_set(uword *ai)
Return the lowest numbered set bit in a bitmap.
Definition: bitmap.h:385
u8 * vlib_thread_stack_init(uword thread_index)
Definition: main.c:574
vlib_error_main_t error_main
Definition: main.h:138
static u32 vlib_frame_index(vlib_main_t *vm, vlib_frame_t *f)
Definition: node_funcs.h:245
vlib_thread_callbacks_t cb
Definition: threads.h:347
int vlib_thread_cb_register(struct vlib_main_t *vm, vlib_thread_callbacks_t *cb)
Definition: threads.c:1774
#define v
Definition: acl.c:341
struct _unformat_input_t unformat_input_t
char * name
Track name vector.
Definition: elog.h:115
#define clib_error_return_unix(e, args...)
Definition: error.h:102
void vlib_put_frame_to_node(vlib_main_t *vm, u32 to_node_index, vlib_frame_t *f)
Definition: main.c:191
#define vec_dup(V)
Return copy of vector (no header, no alignment)
Definition: vec.h:370
static void * clib_mem_get_per_cpu_heap(void)
Definition: mem.h:58
void vlib_frame_free(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_frame_t *f)
Definition: main.c:211
#define ELOG_DATA(em, f)
Definition: elog.h:481
static clib_error_t * vlib_launch_thread_int(void *fp, vlib_worker_thread_t *w, unsigned lcore_id)
Definition: threads.c:688
#define PREDICT_FALSE(x)
Definition: clib.h:105
void vlib_worker_thread_node_refork(void)
Definition: threads.c:1070
#define VLIB_FRAME_PENDING
Definition: node.h:373
#define VLIB_FRAME_SIZE
Definition: node.h:328
u32 node_index
Node index.
Definition: node.h:437
uword * init_functions_called
Definition: main.h:170
#define VLIB_FRAME_FREE_AFTER_DISPATCH
Definition: node.h:376
void clib_time_init(clib_time_t *c)
Definition: time.c:175
uword * frame_size_hash
Definition: node.h:696
vlib_thread_main_t vlib_thread_main
Definition: threads.c:36
word fformat(FILE *f, char *fmt,...)
Definition: format.c:453
void(* thread_function)(void *)
Definition: threads.h:113
static clib_error_t * cpu_config(vlib_main_t *vm, unformat_input_t *input)
Definition: threads.c:1245
#define pool_get_aligned(P, E, A)
Allocate an object E from a pool P (general version).
Definition: pool.h:188
i32 n_vectors[FRAME_QUEUE_MAX_NELTS]
Definition: node.h:720
u64 * counters
Definition: error.h:78
u32 owner_node_index
Definition: node.h:308
vlib_frame_queue_t * vlib_frame_queue_alloc(int nelts)
Definition: threads.c:472
volatile u64 tail
Definition: threads.h:138
#define clib_mem_alloc_no_fail(size)
Definition: mem.h:156
#define VLIB_EARLY_CONFIG_FUNCTION(x, n,...)
Definition: init.h:140
#define UNFORMAT_END_OF_INPUT
Definition: format.h:143
svmdb_client_t * c
u16 n_vectors
Definition: node.h:344
vlib_frame_queue_t ** vlib_frame_queues
Definition: threads.h:167
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:221
vlib_main_t * vm
Definition: buffer.c:283
vec_header_t h
Definition: buffer.c:282
u32 node_runtime_index
Definition: node.h:397
vlib_pending_frame_t * pending_frames
Definition: node.h:666
vlib_thread_function_t * function
Definition: threads.h:52
int vlib_frame_queue_dequeue(vlib_main_t *vm, vlib_frame_queue_main_t *fqm)
Definition: threads.c:1586
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:336
void * heap_base
Definition: main.h:103
static void * clib_mem_set_heap(void *heap)
Definition: mem.h:226
#define clib_warning(format, args...)
Definition: error.h:59
static vlib_node_runtime_t * vlib_node_get_runtime(vlib_main_t *vm, u32 node_index)
Get node runtime by node index.
Definition: node_funcs.h:89
#define clib_memcpy(a, b, c)
Definition: string.h:75
elog_main_t elog_main
Definition: main.h:155
frame_queue_nelt_counter_t * frame_queue_histogram
Definition: threads.h:171
static uword * clib_bitmap_set_multiple(uword *bitmap, uword i, uword value, uword n_bits)
sets the ith through ith + n_bits bits in a bitmap
Definition: bitmap.h:275
static uword clib_bitmap_get(uword *ai, uword i)
Gets the ith bit value from a bitmap.
Definition: bitmap.h:197
#define ELOG_TYPE_DECLARE(f)
Definition: elog.h:439
static void vlib_next_frame_init(vlib_next_frame_t *nf)
Definition: node.h:386
void vlib_worker_thread_init(vlib_worker_thread_t *w)
Definition: threads.c:633
uword os_get_nthreads(void)
Definition: threads.c:255
static void * clib_mem_get_heap(void)
Definition: mem.h:220
volatile u32 * wait_at_barrier
Definition: threads.h:106
#define FRAME_QUEUE_NELTS
Definition: threads.c:27
#define never_inline
Definition: clib.h:89
#define hash_create(elts, value_bytes)
Definition: hash.h:681
#define ASSERT(truth)
unsigned int u32
Definition: types.h:88
static void barrier_trace_sync_rec(f64 t_entry)
Definition: threads.c:239
vlib_frame_queue_main_t * frame_queue_mains
Definition: threads.h:335
static u32 elog_id_for_msg_name(mc_main_t *m, char *msg_name)
Definition: mc.c:46
u16 flags
Definition: node.h:335
static void clib_mem_free(void *p)
Definition: mem.h:179
#define clib_error_report(e)
Definition: error.h:113
#define clib_bitmap_free(v)
Free a bitmap.
Definition: bitmap.h:92
void vlib_worker_thread_barrier_sync_int(vlib_main_t *vm)
Definition: threads.c:1434
size_t count
Definition: vapi.c:42
int need_vlib_worker_thread_node_runtime_update
Definition: main.h:202
uword * thread_registrations_by_name
Definition: threads.h:297
#define BARRIER_MINIMUM_OPEN_LIMIT
Definition: threads.c:1426
volatile u32 * node_reforks_required
Definition: threads.h:125
static void * clib_mem_alloc(uword size)
Definition: mem.h:112
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
u64 uword
Definition: types.h:112
void vlib_node_sync_stats(vlib_main_t *vm, vlib_node_t *n)
Definition: main.c:570
static uword clib_bitmap_count_set_bits(uword *ai)
Return the number of set bits in a bitmap.
Definition: bitmap.h:441
void ** mbuf_alloc_list
Definition: main.h:175
static void barrier_trace_release(f64 t_entry, f64 t_closed_total, f64 t_update_main)
Definition: threads.c:249
void vlib_worker_loop(vlib_main_t *vm)
Definition: main.c:1632
u32 elog_string(elog_main_t *em, char *fmt,...)
add a string to the event-log string table
Definition: elog.c:534
f64 barrier_no_close_before
Definition: main.h:211
static clib_error_t * start_workers(vlib_main_t *vm)
Definition: threads.c:714
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
double f64
Definition: types.h:142
void vlib_rpc_call_main_thread(void *callback, u8 *args, u32 arg_size)
Definition: threads.c:1798
unsigned char u8
Definition: types.h:56
#define VLIB_PENDING_FRAME_NO_NEXT_FRAME
Definition: node.h:406
DECLARE_CJ_GLOBAL_LOG
Definition: threads.c:25
vlib_node_main_t node_main
Definition: main.h:129
static uword unformat_bitmap_list(unformat_input_t *input, va_list *va)
unformat a list of bit ranges into a bitmap (eg "0-3,5-7,11" )
Definition: bitmap.h:693
vlib_buffer_free_list_t * buffer_free_list_pool
Definition: buffer.h:433
vlib_next_frame_t * next_frames
Definition: node.h:663
#define vec_sort_with_function(vec, f)
Sort a vector using the supplied element comparison function.
Definition: vec.h:956
static void unformat_free(unformat_input_t *i)
Definition: format.h:161
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:267
volatile u64 head_hint
Definition: threads.h:155
#define VLIB_THREAD_STACK_SIZE
Definition: threads.h:82
f64 barrier_epoch
Definition: main.h:208
vlib_frame_size_t * frame_sizes
Definition: node.h:699
clib_error_t *(* vlib_launch_thread_cb)(void *fp, vlib_worker_thread_t *w, unsigned lcore_id)
Definition: threads.h:284
#define hash_get_mem(h, key)
Definition: hash.h:268
static void worker_thread_node_runtime_update_internal(void)
Definition: threads.c:1018
static void * clib_mem_alloc_aligned(uword size, uword align)
Definition: mem.h:120
volatile u32 * workers_at_barrier
Definition: threads.h:107
uword clib_calljmp(uword(*func)(uword func_arg), uword func_arg, void *stack)
static uword * clib_sysfs_list_to_bitmap(char *filename)
Definition: threads.c:292
void vlib_worker_thread_barrier_release(vlib_main_t *vm)
Definition: threads.c:1491
#define VLIB_INVALID_NODE_INDEX
Definition: node.h:325
static vlib_thread_main_t * vlib_get_thread_main()
Definition: global_funcs.h:32
static f64 vlib_time_now_ticks(vlib_main_t *vm, u64 n)
Definition: main.h:230
static vlib_node_t * vlib_get_node(vlib_main_t *vm, u32 i)
Get vlib node by index.
Definition: node_funcs.h:59
#define vec_foreach(var, vec)
Vector iterator.
void * vlib_worker_thread_bootstrap_fn(void *arg)
Definition: threads.c:670
#define CLIB_MEMORY_BARRIER()
Definition: clib.h:109
u32 node_runtime_index
Definition: node.h:356
uword * cpu_socket_bitmap
Definition: threads.h:332
#define foreach_sched_policy
Definition: threads.h:267
vlib_thread_registration_t ** registrations
Definition: threads.h:295
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:67
u8 ** vlib_thread_stacks
Definition: main.c:557
pthread_t thread_id
Definition: threads.h:129
vlib_thread_registration_t * registration
Definition: threads.h:118
#define BITS(x)
Definition: clib.h:58
volatile u32 worker_thread_release
Definition: threads.h:338
void vlib_worker_thread_fork_fixup(vlib_fork_fixup_t which)
Definition: threads.c:1396
clib_random_buffer_t random_buffer
Definition: main.h:167
u8 runtime_data_bytes
Definition: node.h:268
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:169
clib_error_t * vlib_thread_init(vlib_main_t *vm)
Definition: threads.c:322